1. A device for calibrating an oil-water two-phase flow sensor is characterized by comprising a shaft model, an oil-water separation mechanism, an oil-water mixing mechanism, an oil inlet mechanism and a water inlet mechanism;

the oil-water separation mechanism is provided with a mixed liquid inlet end, a mixed liquid outlet end and a water outlet end, and the mixed liquid inlet end is communicated with one end of the shaft model;

the oil-water mixing mechanism is provided with an oil inlet end, a water inlet end and a mixed liquid outlet end, and the mixed liquid outlet end is communicated with the other end of the shaft model;

the oil inlet mechanism comprises an oil inlet pump, an inlet of the oil inlet pump is communicated with the oil outlet end, and an outlet of the oil inlet pump is communicated with the oil inlet end;

the water inlet mechanism comprises a water inlet pump, an inlet of the water inlet pump is communicated with the water outlet end, and an outlet of the water inlet pump is communicated with the water inlet end.

2. The device for calibrating an oil-water two-phase flow sensor according to claim 1, wherein the oil-water separating mechanism comprises an oil-water separating tank and at least two separating baffles, the separating baffles are sequentially arranged from the first end of the oil-water separating tank to the second end of the oil-water separating tank, the heights of the separating baffles are sequentially increased from the first end of the oil-water separating tank to the second end of the oil-water separating tank, an oil-water mixing cavity is formed between the separating baffle with the lowest height and the end surface corresponding to the first end of the oil-water separating tank, and a water collecting cavity is formed between the separating baffle with the highest height and the end surface corresponding to the second end of the oil-water separating tank;

the water inlet mechanism further comprises a water storage tank, a connecting pipe and a first water inlet pipe, wherein one end of the connecting pipe is communicated with the lower end of the oil-water mixing cavity, the other end of the connecting pipe is communicated with the water storage tank, one end of the first water inlet pipe is communicated with the water storage tank, and the other end of the first water inlet pipe is communicated with an inlet of the water inlet pump;

the oil inlet mechanism further comprises a first oil inlet pipe, one end of the first oil inlet pipe is communicated with the upper end of the water collecting cavity, and the other end of the first oil inlet pipe is communicated with an inlet of the oil inlet pump.

3. The apparatus of claim 1, wherein the oil-water mixing mechanism comprises a first bottom plate, a first nozzle plate and a second nozzle plate, the first bottom plate, the first nozzle plate and the second nozzle plate are sequentially embedded in the wellbore model, the first nozzle plate is provided with a plurality of first nozzle holes, a first mixing cavity is formed between the first nozzle plate and the first bottom plate, the first mixing cavity is communicated with both an outlet of the water inlet pump and an outlet of the oil inlet pump, the second nozzle plate is provided with a plurality of second nozzle holes, and a second mixing cavity is formed between the second nozzle plate and the first nozzle plate.

4. The apparatus for calibrating a two-phase oil and water flow sensor according to claim 3, further comprising an angle adjusting mechanism, wherein the angle adjusting mechanism comprises a support rod and a driving member, the wellbore model is rotatably disposed on the support rod via a rotating shaft, and the driving member is connected with the wellbore model and is used for driving the wellbore model to rotate.

5. The apparatus of claim 4, wherein the water inlet mechanism further comprises a first dynamic sealing member, a second water inlet pipe and a third water inlet pipe, the first dynamic sealing member comprises a first left cylinder and a first right cylinder, the first left cylinder has a first left containing cavity, the first right cylinder is connected with the first left cylinder in a sealing and rotating manner, the first right cylinder has a first right containing cavity communicated with the first left containing cavity, one end of the second water inlet pipe is communicated with the first left containing cavity, the other end of the second water inlet pipe is communicated with an outlet of the water inlet pump, one end of the third water inlet pipe is communicated with the first right containing cavity, and the other end of the third water inlet pipe is communicated with the first mixing cavity.

6. The apparatus for calibrating a two-phase oil and water flow sensor according to claim 4, wherein the driving member comprises a worm wheel, a worm and a step motor, the worm wheel is fixed on the wellbore model, the worm is engaged with the worm wheel, and the step motor is connected with the worm and is used for driving the worm to rotate.

7. The apparatus for calibrating a two-phase oil and water flow sensor according to claim 2, further comprising a temperature adjustment mechanism, wherein said temperature adjustment mechanism comprises a temperature sensor and a heater, wherein said temperature sensor is disposed in said wellbore model, and said heater is disposed in said water storage tank.

8. The apparatus for calibrating a two-phase flow sensor, according to claim 1, wherein a plurality of mounting holes are formed in the sidewall of the wellbore model, and the mounting holes are used for fixedly mounting the two-phase flow sensor.

9. The apparatus for calibrating a two-phase flow sensor, according to claim 3, wherein a second bottom plate is disposed at an end of the wellbore model away from the first bottom plate, and a fixing hole for fixing a measuring instrument is formed on the second bottom plate.

10. The apparatus for calibrating a two-phase flow sensor, according to claim 2, further comprising a bearing plate and a roller, wherein said oil-water separation tank and said water storage tank are both fixed on said bearing plate, and said roller is disposed at a lower end of said bearing plate.

Background

In the development of oil and gas fields, the monitoring of the flow of the underground oil-water two-phase flow can provide the yield information of an oil well, and can help engineers to know the health condition of the oil well in time, so that the exploitation strategy is adjusted in time, and an optimal exploitation scheme is formulated. The oil-water two-phase flow has wide research and application in the fields of petroleum refining and chemical industry, and various oil-water two-phase flow sensors are designed for detecting flow parameters of oil and water phases. These sensors require, in the development phase, experiments in oil-water two-phase flow simulators to check their accuracy.

When the existing oil-water two-phase flow simulation device is used, firstly, oil-water mixed liquid which is prepared according to a certain proportion is required to be pumped into a shaft model to realize the calibration of an oil-water two-phase flow sensor, when the oil-water mixed proportion of the oil-water mixed liquid which is pumped into the shaft model needs to be changed, the mixed liquid needs to be reconfigured, and the operation process is complicated; meanwhile, the mixed liquid flowing out of the well barrel model cannot be reused, so that a large amount of water and petroleum are consumed in the test process, a large-capacity container is needed for storing the water and the petroleum, the test device is difficult to miniaturize, and the production cost of the test device is high.

Disclosure of Invention

In view of the above, there is a need to provide a device for calibrating an oil-water two-phase flow sensor, so as to solve the technical problems that the existing oil-water two-phase flow simulation device is inconvenient to adjust the mixing ratio of oil-water mixed liquid entering a wellbore model, consumes a large amount of water and oil, and cannot achieve device miniaturization.

In order to achieve the aim, the invention provides a device for calibrating an oil-water two-phase flow sensor, which comprises a shaft model, an oil-water separation mechanism, an oil-water mixing mechanism, an oil inlet mechanism and a water inlet mechanism, wherein the shaft model is used for measuring the flow of oil and water;

the oil-water separation mechanism is provided with a mixed liquid inlet end, a mixed liquid outlet end and a water outlet end, and the mixed liquid inlet end is communicated with one end of the shaft model;

the oil-water mixing mechanism is provided with an oil inlet end, a water inlet end and a mixed liquid outlet end, and the mixed liquid outlet end is communicated with the other end of the shaft model;

the oil inlet mechanism comprises an oil inlet pump, an inlet of the oil inlet pump is communicated with the oil outlet end, and an outlet of the oil inlet pump is communicated with the oil inlet end;

the water inlet mechanism comprises a water inlet pump, an inlet of the water inlet pump is communicated with the water outlet end, and an outlet of the water inlet pump is communicated with the water inlet end.

Preferably, the oil-water separation mechanism comprises an oil-water separation tank and at least two separation baffles, the separation baffles are sequentially arranged from the first end of the oil-water separation tank to the second end of the oil-water separation tank, the heights of the separation baffles are sequentially increased from the first end of the oil-water separation tank to the second end of the oil-water separation tank, an oil-water mixing cavity is formed between the separation baffle with the lowest height and the end face corresponding to the first end of the oil-water separation tank, and a water collection cavity is formed between the separation baffle with the highest height and the end face corresponding to the second end of the oil-water separation tank; the water inlet mechanism further comprises a water storage tank, a connecting pipe and a first water inlet pipe, wherein one end of the connecting pipe is communicated with the lower end of the oil-water mixing cavity, the other end of the connecting pipe is communicated with the water storage tank, one end of the first water inlet pipe is communicated with the water storage tank, and the other end of the first water inlet pipe is communicated with an inlet of the water inlet pump; the oil inlet mechanism further comprises a first oil inlet pipe, one end of the first oil inlet pipe is communicated with the upper end of the water collecting cavity, and the other end of the first oil inlet pipe is communicated with an inlet of the oil inlet pump.

Preferably, the oil-water mixing mechanism includes first bottom plate, first spout board and second spout the board, first bottom plate first spout the board reaches the second spouts the board and inlays in proper order and locate in the pit shaft model, a plurality of first orifice has been seted up on the first board that spouts, first spout the board with form first hybrid chamber between the first bottom plate, first hybrid chamber with the export of intake pump reaches the export of intake pump all communicates, set up a plurality of second orifice on the second spouts the board, the second spout the board with first spout and form the second hybrid chamber between the board.

Preferably, the device for calibrating the oil-water two-phase flow sensor further comprises an angle adjusting mechanism, the angle adjusting mechanism comprises a supporting rod and a driving piece, the shaft model is rotatably arranged on the supporting rod through a rotating shaft, and the driving piece is connected with the shaft model and is used for driving the shaft model to rotate.

Preferably, the mechanism of intaking still includes first sealing member, second inlet tube and the third inlet tube of moving, first sealing member of moving includes a first left section of thick bamboo and a first right section of thick bamboo, a first left section of thick bamboo has a first left side and holds the chamber, a first right section of thick bamboo with a first left section of thick bamboo is sealed to rotate and is connected, a first right section of thick bamboo have with a first left side holds the chamber in the first right side that holds the chamber intercommunication, the one end of second inlet tube with a first left side holds the chamber intercommunication, the other end of second inlet tube with the export intercommunication of intake pump, the one end of third inlet tube with a first right side holds the chamber intercommunication, the other end of third inlet tube with first hybrid chamber intercommunication.

Preferably, the driving piece comprises a worm wheel, a worm and a stepping motor, the worm wheel is fixed on the shaft model, the worm is meshed with the worm wheel, and the stepping motor is connected with the worm and is used for driving the worm to rotate.

Preferably, the device for calibrating the oil-water two-phase flow sensor further comprises a temperature adjusting mechanism, the temperature adjusting mechanism comprises a temperature sensor and a heater, the temperature sensor is arranged in the shaft model, and the heater is arranged in the water storage tank.

Preferably, a plurality of mounting holes are formed in the side wall of the shaft model, and the mounting holes are used for fixedly mounting the oil-water two-phase flow sensor.

Preferably, a second bottom plate is arranged at one end, away from the first bottom plate, of the shaft model, and a fixing hole for fixing a measuring instrument is formed in the second bottom plate.

Preferably, the device for calibrating the oil-water two-phase flow sensor further comprises a bearing plate and a roller, the oil-water separation tank and the water storage tank are both fixed on the bearing plate, and the roller is arranged at the lower end of the bearing plate.

Compared with the prior art, the technical scheme provided by the invention has the beneficial effects that: the oil-water mixed liquid flowing out of the shaft model is subjected to oil-water separation through the oil-water separation mechanism, the separated oil and water are guided into the oil-water mixing mechanism through the oil inlet mechanism and the water inlet mechanism respectively to be mixed, the formed oil-water mixed liquid enters the shaft model again, and the oil-water mixed liquid circulates, so that the oil and the water are recycled, the miniaturization of the device can be realized, the production cost of the device is reduced, and meanwhile, the mixing proportion of the oil-water mixed liquid in the shaft model can be dynamically adjusted by changing the flow ratio of the oil and the water pumped into the oil-water mixing mechanism by the oil inlet mechanism and the water inlet mechanism, and the use is convenient.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of an apparatus for calibrating an oil-water two-phase flow sensor according to the present invention;

FIG. 2 is a schematic perspective view of the oil-water separating mechanism and the water storage tank shown in FIG. 1;

FIG. 3 is a schematic perspective view of the oil-water mixing mechanism shown in FIG. 1;

FIG. 4 is a schematic perspective view of a first dynamic seal of the apparatus for calibrating a two-phase oil and water flow sensor of FIG. 1;

FIG. 5 is a schematic perspective view of a drive member of the apparatus for calibrating a two-phase oil and water flow sensor of FIG. 1;

in the figure: 1-a shaft model, 2-an oil-water separation mechanism, 3-an oil-water mixing mechanism, 4-an oil inlet mechanism, 5-a water inlet mechanism, 6-an angle adjusting mechanism, 7-a temperature adjusting mechanism, 8-a bearing plate, 9-a roller, 11-a mounting hole, 12-a second base plate, 21-an oil-water separation tank, 22-a separation baffle, 221-a first-stage separation baffle, 222-a second-stage separation baffle, 223-a third-stage separation baffle, 31-a first base plate, 32-a first spray plate, 321-a first spray hole, 33-a second spray plate, 331-a second spray hole, 41-an oil inlet pump, 42-a first oil inlet pipe, 43-a second oil inlet pipe, 44-a third oil inlet pipe, 45-an oil measuring flowmeter, 51-a water inlet pump, 52-a water storage tank, 53-connecting pipe, 54-first water inlet pipe, 55-first movable sealing element, 551-first left barrel, 552-first right barrel, 56-second water inlet pipe, 57-third water inlet pipe, 58-water measuring flowmeter, 61-supporting rod, 62-driving element, 621-worm wheel, 622-worm, 623-stepping motor, 71-temperature sensor, 72-heater and D-measuring instrument.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the apparatus for calibrating a two-phase flow sensor of oil and water provided by the present invention, the apparatus for calibrating a two-phase flow sensor of oil and water includes a wellbore model 1, an oil-water separating mechanism 2, an oil-water mixing mechanism 3, an oil inlet mechanism 4, and a water inlet mechanism 5, wherein the wellbore model 1 is used for introducing oil-water mixed liquid with a known flow rate, the wellbore model 1 is provided with the two-phase flow sensor of oil and water, the accuracy of the oil-water mixing mechanism is determined by comparing the flow rate of the two phases of oil and water measured by the two-phase flow sensor of oil and water with a real value, the oil-water separating mechanism 2 is used for separating oil from water in the oil-water mixed liquid discharged from the wellbore model 1, the separated oil and water are respectively introduced into the oil-water mixing mechanism 3 through the oil inlet mechanism 4 and the water inlet mechanism 5, and are re-mixed into the oil-water mixed liquid according to a set ratio in the oil-water mixing mechanism 3, the oil-water mixed liquid is led into the shaft model 1 again, and the oil and the water are recycled.

The oil-water separation mechanism 2 is provided with a mixed liquid inlet end, a mixed liquid outlet end and a water outlet end, and the mixed liquid inlet end is communicated with one end of the shaft model 1;

the oil-water mixing mechanism 3 is provided with an oil inlet end, a water inlet end and a mixed liquid outlet end, and the mixed liquid outlet end is communicated with the other end of the shaft model 1;

the oil inlet mechanism 4 comprises an oil inlet pump 41, an inlet of the oil inlet pump 41 is communicated with the oil outlet end, and an outlet of the oil inlet pump 41 is communicated with the oil inlet end;

the water inlet mechanism 5 comprises a water inlet pump 51, an inlet of the water inlet pump 51 is communicated with the water outlet end, and an outlet of the water inlet pump 51 is communicated with the water inlet end.

When the oil-water separator is used, firstly, oil and water are respectively filled into the oil-water separation mechanism 2, the oil enters the oil inlet end of the oil-water mixing mechanism 3 through the oil inlet mechanism 4 according to a first preset flow, the water enters the water inlet end of the oil-water mixing mechanism 3 through the water inlet mechanism 5 according to a second preset flow, the oil and the water are mixed in the oil-water mixing mechanism 3 to form an oil-water mixed liquid (the mixing ratio of the oil-water mixed liquid can be dynamically adjusted by changing the ratio of the first preset flow to the second preset flow), the oil-water mixed liquid enters the shaft model 1, the oil-water mixed liquid leaves the shaft model 1 and then enters the oil-water separation mechanism 2, next circulation is carried out, meanwhile, the oil-water two-phase flow sensors arranged in the shaft model 1 respectively measure the respective flow of the oil-water two phases in the oil-water mixed liquid, and the measured flow value is compared with the first preset flow and the second preset flow, so that the accuracy of the flow sensor can be judged.

According to the invention, the oil-water separation mechanism 2 is used for carrying out oil-water separation on the oil-water mixed liquid flowing out of the shaft model 1, the separated oil and water are respectively guided into the oil-water mixing mechanism 3 through the oil inlet mechanism 4 and the water inlet mechanism 5 to be mixed, and the formed oil-water mixed liquid enters the shaft model 1 again, so that circulation is realized, the oil and water are recycled, the miniaturization of the device can be realized, the production cost of the device is reduced, meanwhile, the mixing ratio of the oil-water mixed liquid in the shaft model can be dynamically adjusted by changing the flow ratio of the oil and the water pumped into the oil-water mixing mechanism 3 by the oil inlet mechanism 4 and the water inlet mechanism 5, and the use is convenient.

In order to specifically realize the functions of the oil-water separation mechanism 2, referring to fig. 1 and 2, in a preferred embodiment, the oil-water separation mechanism 2 includes an oil-water separation tank 21 and at least two separation baffles 22, the separation baffles 22 are sequentially arranged from a first end of the oil-water separation tank 21 to a second end of the oil-water separation tank 21, heights of the separation baffles 22 are sequentially increased from the first end of the oil-water separation tank 21 to the second end of the oil-water separation tank 21, an oil-water mixing cavity is formed between the separation baffle 22 with the lowest height and an end surface corresponding to the first end of the oil-water separation tank 21, and a water collection cavity is formed between the separation baffle 22 with the highest height and an end surface corresponding to the second end of the oil-water separation tank 21; the water inlet mechanism 5 further comprises a water storage tank 52, a connecting pipe 53 and a first water inlet pipe 54, wherein one end of the connecting pipe 53 is communicated with the lower end of the oil-water mixing cavity, the other end of the connecting pipe 53 is communicated with the water storage tank 52, one end of the first water inlet pipe 54 is communicated with the water storage tank 52, and the other end of the first water inlet pipe 54 is communicated with an inlet of the water inlet pump 51; the oil inlet mechanism 4 further comprises a first oil inlet pipe 42, one end of the first oil inlet pipe 42 is communicated with the upper end of the water collecting cavity, and the other end of the first oil inlet pipe 42 is communicated with an inlet of the oil inlet pump 41.

Referring to fig. 1 and 2, in the present embodiment, the number of the separation baffles 22 is three, the heights of the three separation baffles 22 are respectively the tank height 1/4, the tank height 1/2 and the tank height 2/3, which are respectively referred to as the first-stage separation baffle 221, the second-stage separation baffle 222 and the third-stage separation baffle 223, the oil-water mixture first reaches the left side of the first-stage separation baffle 221, due to the action of gravity and the difference of density, the water will settle below the mixed liquid and flow into the water storage tank 52 through the connecting pipe 53, most of the water and a very small part of the oil flow into the sump 52 through the connection pipe 53, the laminar flow continues in the reservoir 52, but since the first inlet pipe 54 is located at the rightmost side of the reservoir 52, and the height at the inlet of the first inlet pipe 54 is at the position 1/10 of the height of the water storage tank 52, which ensures that the liquid sucked into the first inlet pipe 54 is pure water; oil in the mixed liquid then can float in the top of mixed liquid, after the liquid level height of oil-water mixed liquid surpassed the height of one-level separation baffle 221, most oil and a small part of water can flow into the space between one-level separation baffle 221 and second grade separation baffle 222, because the cushioning effect of one-level separation baffle 221, oil-water mixed liquid is static relatively in this space this moment, thereby be convenient for the oil-water layering, the oil-water separation effect is better than the left side of one-level separation baffle 221, and in the same way, oil-water mixed liquid is further layered after strideing across second grade separation baffle 222 and third grade separation baffle 223, the liquid that stays at third grade separation baffle 223 right side is almost all for oil, this has just guaranteed that the liquid that is inhaled in first oil pipe 42 is pure oil, thereby oil-water separation has been realized.

In order to realize the function of the oil-water mixing mechanism 3, referring to fig. 1, in a preferred embodiment, the oil-water mixing mechanism 3 includes a first bottom plate 31, a first nozzle plate 32 and a second nozzle plate 33, the first bottom plate 31, the first nozzle plate 32 and the second nozzle plate 33 are sequentially embedded in the wellbore model 1, the first nozzle plate 32 is provided with a plurality of first nozzle holes 321, a first mixing cavity is formed between the first nozzle plate 32 and the first bottom plate 31, the first mixing cavity is communicated with both the outlet of the intake pump 51 and the outlet of the oil feed pump 41, the second nozzle plate 33 is provided with a plurality of second nozzle holes 331, a second mixing cavity is formed between the second nozzle plate 33 and the first nozzle plate 32, in this embodiment, the first nozzle holes 321 and the second nozzle holes 331 are both array-type holes, and when in use, the intake pump 51 and the oil feed pump 41 pump respectively pump water into the first mixing cavity, the oil and the water are firstly mixed in the first mixing cavity, then the mixed liquid is dispersed and atomized after passing through the first spray hole 321, enters the second mixing cavity, is further mixed in the second mixing cavity, and is finally dispersed and atomized again through the second spray hole 331, and after the two times of dispersion and atomization, a relatively uniform oil-water mixed liquid can be obtained.

In order to simulate the two-phase flow in the deviated well, referring to fig. 1, in a preferred embodiment, the apparatus for calibrating the oil-water two-phase flow sensor further includes an angle adjusting mechanism 6, the angle adjusting mechanism 6 includes a support rod 61 and a driving member 62, the wellbore model 1 is rotatably disposed on the support rod 61 via a rotating shaft, and the driving member 62 is connected to the wellbore model 1 and is used for driving the wellbore model 1 to rotate.

In order to prevent the pipe from being twisted or bent and damaged due to the rotation of the shaft model 1, referring to fig. 1 and 4, in a preferred embodiment, the water inlet mechanism 5 further includes a first dynamic seal 55, a second water inlet pipe 56 and a third water inlet pipe 57, the first dynamic seal 55 includes a first left barrel 551 and a first right barrel 552, the first left barrel 551 has a first left accommodating cavity, the first right barrel 552 is connected with the first left barrel 551 in a sealing and rotating manner, the first right barrel 552 has a first right accommodating cavity communicated with the first left accommodating cavity, one end of the second water inlet pipe 56 is communicated with the first left accommodating cavity, the other end of the second water inlet pipe 56 is communicated with the outlet of the water inlet pump 51, one end of the third water inlet pipe 57 is communicated with the first right accommodating cavity, and the other end of the third water inlet pipe 57 is communicated with the first mixing cavity, when the shaft model 1 rotates, the first right barrel 552 and the first left barrel 551 rotate, and the second water inlet pipe 56 and the third water inlet pipe 57 do not kink or bend, so that the second water inlet pipe 56 and the third water inlet pipe 57 can be prevented from being damaged due to kinking or bending, and the stability of the device is improved.

In order to prevent the well bore model 1 from being damaged by kinking or bending of the pipeline, referring to fig. 1, in a preferred embodiment, the oil inlet mechanism 4 further includes a second dynamic seal, a second oil inlet pipe 43 and a third oil inlet pipe 44, the second dynamic seal includes a second left cylinder and a second right cylinder, the second left cylinder has a second left accommodating cavity, the second right cylinder is connected with the second left cylinder in a sealing and rotating manner, the second right cylinder has a second right accommodating cavity communicated with the second left accommodating cavity, one end of the second oil inlet pipe 43 is communicated with the second left accommodating cavity, the other end of the second oil inlet pipe 43 is communicated with the outlet of the oil inlet pump 41, one end of the third oil inlet pipe 44 is communicated with the second right accommodating cavity, the other end of the third oil inlet pipe 44 is communicated with the first mixing cavity, when the well bore model 1 rotates, the second right barrel and the second left barrel rotate, and no kink or bend occurs between the second oil inlet pipe 43 and the third oil inlet pipe 44, so that the second oil inlet pipe 43 and the third oil inlet pipe 44 can be prevented from being damaged due to kink or bend, and the stability of the device is improved.

In order to obtain the actual flow rate of the oil phase, referring to fig. 1, in a preferred embodiment, the oil inlet mechanism 4 further includes an oil flow meter 45, and the oil flow meter 45 is installed on the first oil inlet pipe 42 and is used for measuring the flow rate of the oil in the second oil inlet pipe 56.

In order to obtain the real flow rate of the water phase, referring to fig. 1, in a preferred embodiment, the water inlet mechanism 5 further includes a water flow meter 58, and the water flow meter 58 is mounted on the first water inlet pipe 54 and is used for measuring the flow rate of the water in the first water inlet pipe 54.

To implement the function of the driving element 62, referring to fig. 1 and 5, in a preferred embodiment, the driving element 62 includes a worm wheel 621, a worm 622 and a stepping motor 623, the worm wheel 621 is fixed on the wellbore model 1, the worm 622 is engaged with the worm wheel 621, and the stepping motor 623 is connected with the worm 622 and is used for driving the worm 622 to rotate. When the adjustable inclination angle adjusting device is used, the inclination angle of the shaft model 1 can be adjusted by controlling the forward rotation and the reverse rotation of the stepping motor 623, in the embodiment, the model of the stepping motor 623 is a 57 stepping motor, the stepping angle of the stepping motor 623 can reach 1.8 degrees, and after the speed is reduced by the worm 622 and the worm gear 621, the inclination angle of the shaft model 1 can very easily reach the precision of 0.01 degree, so that the adjustable inclination angle adjusting device has the advantages of stable operation, high angle adjusting precision and self-locking.

In order to make the temperature of the mixed liquid in the wellbore model 1 coincide with the actual downhole temperature, referring to fig. 1 and fig. 2, in a preferred embodiment, the apparatus for calibrating an oil-water two-phase flow sensor further includes a temperature adjusting mechanism 7, the temperature adjusting mechanism 7 includes a temperature sensor 71 and a heater 72, the temperature sensor 71 is disposed in the wellbore model 1, the heater 72 is disposed in the water storage tank 52, and the temperature of the water in the water storage tank 52 is raised by the heater 72, so that the temperature of the mixed liquid in the wellbore model 1 coincides with the actual downhole temperature, thereby better calibrating the oil-water two-phase flow sensor.

In order to facilitate the installation of the independently installed oil-water two-phase flow sensor on the wellbore model 1, referring to fig. 1, in a preferred embodiment, a plurality of installation holes 11 are formed in a side wall of the wellbore model 1, and the installation holes 11 are used for fixedly installing the oil-water two-phase flow sensor.

In order to install the measuring instrument D with the oil-water two-phase flow sensor in the wellbore model 1, referring to fig. 1, in a preferred embodiment, a second bottom plate 12 is disposed at an end of the wellbore model 1 away from the first bottom plate 31, and a fixing hole for fixing the measuring instrument D is disposed on the second bottom plate 12, when in use, if the flow sensor is already installed on a framework of the measuring instrument D, it is desirable to integrally calibrate the flow sensor on the measuring instrument D, and the measuring instrument D needs to be fixed on the second bottom plate 12 and extend into the wellbore model 1.

In order to facilitate moving the whole device, referring to fig. 1, in a preferred embodiment, the device for calibrating the oil-water two-phase flow sensor further includes a bearing plate 8 and a roller 9, the oil-water separation tank 21 and the water storage tank 52 are both fixed on the bearing plate 8, and the roller 9 is disposed at a lower end of the bearing plate 8.

For better understanding of the present invention, the operation of the apparatus for calibrating an oil-water two-phase flow sensor provided by the present invention will be described in detail below with reference to fig. 1 to 5: when the oil-water separator is used, firstly, oil and water are respectively filled into the oil-water separation tank 21 and the water storage tank 52, the oil enters between the first bottom plate 31 and the first spray plate 32 through the first oil inlet pipe 42, the oil inlet pump 41, the second oil inlet pipe 43 and the third oil inlet pipe 44, the water enters between the first bottom plate 31 and the first spray plate 32 through the first water inlet pipe 54, the water inlet pump 51, the second water inlet pipe 56 and the third water inlet pipe 57, the oil and the water are mixed in the oil-water mixing mechanism 3 to form an oil-water mixed liquid, the oil-water mixed liquid enters the shaft model 1, the oil-water mixed liquid leaves the shaft model 1 and then enters the left side of the first-stage separation baffle 221 in the oil-water separation tank 21, the oil and the water are layered at the position, the water at the lower layer enters the water storage tank 52 through the connecting pipe 53 and enters the next circulation, the oil at the upper layer is further purified through the second-stage separation baffle 222 and the third-stage separation baffle 223 and finally enters the next circulation through the first oil inlet pipe 42, meanwhile, the oil-water two-phase flow sensors installed in the shaft model 1 respectively measure the respective flow rates of oil and water in the oil-water mixed liquid, and the measured flow values are compared with the actual flow values, so that the accuracy of the flow sensors can be judged.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.