1. A system for detecting the concentration of a polymer in a petroleum sample,

the device comprises a supporting component, a filtering component, a separating component and a drying component, wherein the filtering component comprises a filtering shell and a filter membrane, the filtering shell is provided with a liquid inlet, the filtering shell is arranged on the supporting component, and the filter membrane is detachably connected with the filtering shell and is positioned on one side of the filtering shell;

the separation assembly comprises a liquid inlet funnel, a separation shell and a stirrer, the liquid inlet funnel is communicated with the filter shell and is positioned on one side of the filter membrane, the separation shell is communicated with the liquid inlet funnel and is positioned on one side of the liquid inlet funnel, and the stirrer is arranged in the separation shell;

the drying component comprises a sliding pipe, a cylinder, a water pump, a dialysis membrane, a drying shell and a heating resistor, the sliding pipe is connected with the separation shell in a sliding mode and penetrates through the separation shell, the cylinder is arranged on one side of the separation shell, a telescopic rod of the cylinder is fixedly connected with the sliding pipe, the water pump is communicated with the sliding pipe and is located on one side of the sliding pipe, the dialysis membrane is communicated with the water pump and is located on one side of the water pump, the drying shell is arranged at the bottom of the dialysis membrane, and the heating resistor is arranged at the bottom of the drying shell.

2. The system for detecting the concentration of a polymer in a petroleum sample of claim 1,

the support assembly comprises a base and a support platform, the support platform is fixedly connected with the filter shell and is positioned on one side of the filter shell, and the base is fixedly connected with the support platform and is positioned on one side, far away from the filter shell, of the support platform.

3. The system for detecting the concentration of a polymer in a petroleum sample of claim 2,

the support assembly further comprises a non-slip mat, and the non-slip mat is arranged on one side of the base.

4. The system for detecting the concentration of a polymer in a petroleum sample according to claim 3,

the filter shell is provided with scale marks which are distributed on the filter shell.

5. The system for detecting the concentration of a polymer in a petroleum sample of claim 1,

the filter membrane comprises a filter membrane body and a mounting plate, wherein the mounting plate is connected with the filter shell in a sliding mode and is positioned at the bottom of the filter shell, and the filter membrane body is fixedly connected with the mounting plate and is positioned inside the mounting plate.

6. The system for detecting the concentration of a polymer in a petroleum sample of claim 5,

the agitator includes agitator motor, blade and bull stick, the bull stick with the separation shell rotates to be connected, and is located in the separation shell, the blade with bull stick fixed connection, and be located one side of bull stick, agitator motor with separation shell fixed connection, agitator motor's output shaft with bull stick fixed connection.

7. The system for detecting the concentration of a polymer in a petroleum sample of claim 6,

the stirrer further comprises a conical baffle ring, and the conical baffle ring is fixedly connected with the rotating rod and is positioned at the joint of the rotating rod and the separating shell.

8. A method for measuring a polymer concentration in a petroleum sample using the system for measuring a polymer concentration in a petroleum sample according to any one of claims 1 to 7,

pouring the petroleum sample into a filter shell;

after being filtered by a filter membrane, a petroleum sample enters a filter shell through a liquid inlet funnel;

adding an extracting agent into the separation shell, starting a stirrer for stirring, and standing for 1-2 hours;

starting the cylinder to extend the sliding pipe into the separation shell;

starting a water pump, and enabling the upper-layer water phase in the separation shell to enter a dialysis membrane for dialysis after passing through a sliding pipe and the water pump to obtain a mixture;

the mixture enters a drying shell and is heated by a heating resistor to evaporate water to obtain a polymer;

the polymer concentration was calculated based on the mass of the polymer and the volume of the petroleum sample.

Background

The polyacrylamide is used as the most main polymer oil displacement agent and has been popularized and applied in a large scale in the oil field chemical flooding technology. In the chemical flooding implementation process, the viscosity of the polymer mother liquor and the viscosity of the wellhead injection liquid are important basic data for monitoring and ensuring the normal operation of production. The mother liquor viscosity and wellhead injection viscosity fluctuations depend on the one hand on the quality conditions of the water being formulated and on the other hand on the effective concentration of the polymer. In view of the important theoretical and practical value of polyacrylamide concentration, various measurement methods have been developed.

Most of the existing determination methods are to obtain polymers through processes such as separation, purification, extraction and the like to calculate the concentration, but the steps are carried out in a single container, manual transportation is needed, and the working efficiency is reduced.

Disclosure of Invention

The invention aims to provide a method and a system for detecting the concentration of a polymer in a petroleum sample, and aims to solve the problem that the working efficiency is reduced when the existing treatment steps are carried out in a single container.

In order to achieve the aim, the invention provides a method and a system for detecting the concentration of a polymer in a petroleum sample, which comprises a supporting component, a filtering component, a separating component and a drying component, wherein the filtering component comprises a filtering shell and a filtering membrane, the filtering shell is provided with a liquid inlet, the filtering shell is arranged on the supporting component, and the filtering membrane is detachably connected with the filtering shell and is positioned on one side of the filtering shell; the separation assembly comprises a liquid inlet funnel, a separation shell and a stirrer, the liquid inlet funnel is communicated with the filter shell and is positioned on one side of the filter membrane, the separation shell is communicated with the liquid inlet funnel and is positioned on one side of the liquid inlet funnel, and the stirrer is arranged in the separation shell; the drying component comprises a sliding pipe, a cylinder, a water pump, a dialysis membrane, a drying shell and a heating resistor, the sliding pipe is connected with the separation shell in a sliding mode and penetrates through the separation shell, the cylinder is arranged on one side of the separation shell, a telescopic rod of the cylinder is fixedly connected with the sliding pipe, the water pump is communicated with the sliding pipe and is located on one side of the sliding pipe, the dialysis membrane is communicated with the water pump and is located on one side of the water pump, the drying shell is arranged at the bottom of the dialysis membrane, and the heating resistor is arranged at the bottom of the drying shell.

The supporting assembly comprises a base and a supporting platform, the supporting platform is fixedly connected with the filtering shell and is positioned on one side of the filtering shell, and the base is fixedly connected with the supporting platform and is positioned on one side, far away from the filtering shell, of the supporting platform.

The supporting platform supports the whole system, and the supporting platform can be lifted off the ground through the base, so that the use is more convenient.

The support assembly further comprises a non-slip pad, and the non-slip pad is arranged on one side of the base.

The friction force between the base and the ground can be increased through the anti-slip mat, so that the placement is more stable.

Wherein, the filter shell has the scale mark, the scale mark distributes on the filter shell.

Through the scale mark can observe more directly perceivedly put into in the filter shell is the capacity of oil sample to convenient follow-up calculation.

The filter membrane comprises a filter membrane body and a mounting plate, the mounting plate is connected with the filter shell in a sliding mode and is located at the bottom of the filter shell, and the filter membrane body is fixedly connected with the mounting plate and is located inside the mounting plate.

The mounting plate can slide relative to the filter shell, so that the filter membrane body can be pulled out for replacement after multiple uses.

The stirrer comprises a stirring motor, a blade and a rotating rod, the rotating rod is rotatably connected with the separation shell and is positioned in the separation shell, the blade is fixedly connected with the rotating rod and is positioned on one side of the rotating rod, the stirring motor is fixedly connected with the separation shell, and an output shaft of the stirring motor is fixedly connected with the rotating rod.

The stirring motor can drive the rotating rod and the blades to rotate, so that the organic solvent and the petroleum sample in the separation shell can be fully mixed, and the extraction is quicker.

The stirrer further comprises a conical baffle ring, wherein the conical baffle ring is fixedly connected with the rotating rod and is positioned at the joint of the rotating rod and the separation shell.

In the rotating process of the rotating rod, the conical baffle ring deforms and lifts to seal a gap at the joint of the separating shell and the rotating rod, so that liquid is prevented from flowing back into the filter shell.

In a second aspect, the present invention also provides a method of detecting the concentration of a polymer in a petroleum sample, comprising:

pouring the petroleum sample into a filter shell;

after being filtered by a filter membrane, a petroleum sample enters a filter shell through a liquid inlet funnel;

adding an extracting agent into the separation shell, starting a stirrer for stirring, and standing for 1-2 hours;

starting the cylinder to extend the sliding pipe into the separation shell;

starting a water pump, and enabling the upper-layer water phase in the separation shell to enter a dialysis membrane for dialysis after passing through a sliding pipe and the water pump to obtain a mixture;

the mixture enters a drying shell and is heated by a heating resistor to evaporate water to obtain a polymer;

the polymer concentration was calculated based on the mass of the polymer and the volume of the petroleum sample.

According to the method and the system for detecting the concentration of the polymer in the petroleum sample, the filter shell is provided with the liquid inlet, the petroleum sample is poured into the filter shell from the liquid inlet, the filter membrane is detachably connected with the filter shell and is positioned on one side of the filter shell, the aperture of the filter membrane is 1-15 microns, and larger particles in the sample can be removed; the liquid inlet funnel is communicated with the filtering shell, the separating shell is communicated with the liquid inlet funnel, liquid separated from the filter membrane enters the separating shell from the liquid inlet funnel, the stirrer is arranged in the separating shell, an organic solvent used for extraction is added into the separating shell, and then the organic solvent can be fully mixed with a petroleum sample through stirring of the stirrer; the sliding pipe is connected with the separation shell in a sliding mode and penetrates through the separation shell, a telescopic rod of the air cylinder is fixedly connected with the sliding pipe, the air cylinder is driven to drive the sliding pipe to move in and out of the separation shell, the water pump is communicated with the sliding pipe, the dialysis membrane is communicated with the water pump, the water pump is started to suck the upper water phase in the separation shell out through the sliding pipe and enter the dialysis membrane for dialysis so as to further remove impurities, the drying shell is arranged at the bottom of the dialysis membrane, a mixture of the polymer and the water passes through the dialysis membrane and falls into the drying shell, the heating resistor is arranged at the bottom of the drying shell, the mixture can be heated through the heating resistor to evaporate moisture, so that concentrated polymer can be obtained, and the concentration of the polymer can be calculated by combining with the original volume of an oil sample, therefore, the polymer in the petroleum sample can be extracted and calculated more, the working efficiency is improved, and the problem that the working efficiency is reduced when the existing treatment steps are carried out in a single container is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a block diagram of a system for detecting polymer concentration in a petroleum sample according to the present invention;

FIG. 2 is a left side block diagram of a system for detecting polymer concentration in a petroleum sample according to the present invention;

FIG. 3 is a right side block diagram of a system for detecting polymer concentration in a petroleum sample according to the present invention;

FIG. 4 is a schematic cross-sectional view of a system for detecting polymer concentration in a petroleum sample along a separation shell according to the present invention;

FIG. 5 is an enlarged partial view of detail A of FIG. 4;

FIG. 6 is a schematic cross-sectional view of a system for detecting polymer concentration in a petroleum sample along a dry shell according to the present invention;

FIG. 7 is a flow chart of a method of detecting polymer concentration in a petroleum sample according to the present invention.

1-supporting component, 2-filtering component, 3-separating component, 4-drying component, 11-base, 12-supporting platform, 13-non-slip mat, 21-filtering shell, 22-filtering membrane, 31-liquid inlet funnel, 32-separating shell, 33-stirrer, 41-sliding tube, 42-air cylinder, 43-water pump, 44-dialysis membrane, 45-drying shell, 46-heating resistor, 47-sliding plate, 211-liquid inlet, 212-graduation line, 221-filtering membrane body, 222-mounting plate, 331-stirring motor, 332-blade, 333-rotating rod, 334-conical baffle ring, 335-rotating ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In a first aspect, referring to FIGS. 1-6, the present invention provides a system for detecting the concentration of a polymer in a petroleum sample:

the device comprises a supporting component 1, a filtering component 2, a separating component 3 and a drying component 4, wherein the filtering component 2 comprises a filtering shell 21 and a filter membrane 22, the filtering shell 21 is provided with a liquid inlet 211, the filtering shell 21 is arranged on the supporting component 1, and the filter membrane 22 is detachably connected with the filtering shell 21 and is positioned on one side of the filtering shell 21; the separation assembly 3 comprises a feed funnel 31, a separation shell 32 and a stirrer 33, the feed funnel 31 is communicated with the filter shell 21 and is positioned at one side of the filter membrane 22, the separation shell 32 is communicated with the feed funnel 31 and is positioned at one side of the feed funnel 31, and the stirrer 33 is arranged in the separation shell 32; the drying assembly 4 comprises a sliding tube 41, an air cylinder 42, a water pump 43, a dialysis membrane 44, a drying shell 45 and a heating resistor 46, wherein the sliding tube 41 is connected with the separation shell 32 in a sliding manner and penetrates through the separation shell 32, the air cylinder 42 is arranged on one side of the separation shell 32, an expansion rod of the air cylinder 42 is fixedly connected with the sliding tube 41, the water pump 43 is communicated with the sliding tube 41 and is positioned on one side of the sliding tube 41, the dialysis membrane 44 is communicated with the water pump 43 and is positioned on one side of the water pump 43, the drying shell 45 is arranged at the bottom of the dialysis membrane 44, and the heating resistor 46 is arranged at the bottom of the drying shell 45.

In this embodiment, the filtering shell 21 has a liquid inlet 211, the petroleum sample is poured into the filtering shell 21 from the liquid inlet 211, the filter membrane 22 is detachably connected to the filtering shell 21 and is located at one side of the filtering shell 21, the aperture of the filter membrane 22 is 1-15um, and larger particles in the sample can be removed; the separation assembly 3 comprises a feed funnel 31, a separation shell 32 and a stirrer 33, wherein the feed funnel 31 is communicated with the filter shell 21 and is positioned at one side of the filter membrane 22, the separation shell 32 is communicated with the feed funnel 31, liquid separated from the filter membrane 22 enters the separation shell 32 from the feed funnel 31, the stirrer 33 is arranged in the separation shell 32, organic solvent used for extraction is added into the separation shell 32, and then the organic solvent can be fully mixed with the petroleum sample through stirring of the stirrer 33; the drying assembly 4 comprises a sliding tube 41, an air cylinder 42, a water pump 43, a dialysis membrane 44, a drying shell 45 and a heating resistor 46, the sliding tube 41 is slidably connected with the separation shell 32 and penetrates through the separation shell 32, the air cylinder 42 is arranged at one side of the separation shell 32, a telescopic rod of the air cylinder 42 is fixedly connected with the sliding tube 41, the air cylinder 42 is driven to drive the sliding tube 41 to move the sliding tube 41 into and out of the separation shell 32, the water pump 43 is communicated with the sliding tube 41 and is positioned at one side of the sliding tube 41, the dialysis membrane 44 is communicated with the water pump 43 and is positioned at one side of the water pump 43, the water pump 43 is started to suck the upper aqueous phase in the separation shell 32 through the sliding tube 41 and onto the dialysis membrane 44 for dialysis so as to further remove impurities, the drying shell 45 is arranged at the bottom of the dialysis membrane 44, what passes through the dialysis membrane 44 is a mixture of polymer and water, and falls into the drying shell 45, the heating resistor 46 is arranged at the bottom of the drying shell 45, the mixture can be heated by the heating resistor 46 to evaporate water, so that concentrated polymer can be obtained, the concentration of the polymer can be calculated by combining the original volume of the petroleum sample, so that the polymer in the petroleum sample can be extracted and calculated more, the working efficiency is improved, and the problem that the working efficiency is reduced in a single container in the existing processing steps is solved.

Further, the support assembly 1 includes a base 11 and a support 12, the support 12 is fixedly connected to the filter housing 21 and is located at one side of the filter housing 21, and the base 11 is fixedly connected to the support 12 and is located at one side of the support 12 away from the filter housing 21; the support assembly 1 further comprises a non-slip mat 13, wherein the non-slip mat 13 is arranged on one side of the base 11.

In this embodiment, the support base 12 supports the entire system, and the base 11 can lift the support base 12 off the floor, which is more convenient for use. The friction between the base 11 and the ground can be increased through the anti-skid pad 13, so that the placement is more stable.

Further, the filter shell 21 has graduation lines 212, and the graduation lines 212 are distributed on the filter shell 21.

In this embodiment, the volume of the petroleum sample put into the filter casing 21 can be more visually observed through the scale marks 212, so that subsequent calculation is facilitated.

Further, the filter membrane 22 includes a filter membrane body 221 and a mounting plate 222, the mounting plate 222 is slidably connected to the filter housing 21 and is located at the bottom of the filter housing 21, and the filter membrane body 221 is fixedly connected to the mounting plate 222 and is located inside the mounting plate 222.

In this embodiment, the mounting plate 222 is slidable relative to the filter housing 21, so that the filter membrane body 221 can be pulled out and replaced after a plurality of uses.

Further, the stirrer 33 includes a stirring motor 331, a blade 332 and a rotating rod 333, the rotating rod 333 is rotatably connected to the separation shell 32 and is located inside the separation shell 32, the blade 332 is fixedly connected to the rotating rod 333 and is located at one side of the rotating rod 333, the stirring motor 331 is fixedly connected to the separation shell 32, and an output shaft of the stirring motor 331 is fixedly connected to the rotating rod 333; the stirrer 33 further comprises a conical baffle 334, wherein the conical baffle 334 is fixedly connected with the rotating rod 333 and is positioned at the joint of the rotating rod 333 and the separating shell 32; the agitator 33 further comprises a swivel 335, the swivel 335 being rotatably connected to the separation shell 32 and being located between the conical collar 334 and the separation shell 32.

In this embodiment, the stirring motor 331 can drive the rotating rod 333 and the blade 332 to rotate, so that the organic solvent and the petroleum sample in the separation shell 32 can be sufficiently mixed, and the extraction can be faster. During the rotation of the rotating rod 333, the conical ring 334 is deformed and lifted to close the gap at the joint of the separating shell 32 and the rotating rod 333, so as to prevent the liquid from flowing back into the filter shell 21. When the retaining ring 334 contacts the separation shell 32, the retaining ring 334 is easily worn, so the rotating ring 335 is disposed between the retaining ring 334 and the separation shell 32, and the retaining ring 334 can contact the rotating ring 335 to drive the rotating ring 335 to rotate, thereby reducing the wear on the retaining ring 334.

Further, the drying assembly 4 further includes a sliding plate 47, and the sliding plate 47 is slidably connected to the drying casing 45 and is located inside the drying casing 45.

In this embodiment, the dialyzed mixture can enter the sliding plate 47 and be heated by the heating resistor 46, so that the sliding plate 47 can be conveniently taken out after the heating is finished, and then the polymer in the sliding plate can be taken out for weighing calculation.

In a second aspect, referring to fig. 7, the present invention further provides a method for detecting a polymer concentration in a petroleum sample, comprising:

s101, pouring a petroleum sample into a filter shell 21;

s102, filtering a petroleum sample by a filter membrane 22, and then feeding the petroleum sample into a filter shell 21 through a liquid inlet funnel 31;

s103, adding an extracting agent into the separation shell 32, starting a stirrer 33 for stirring, and standing for 1-2 hours;

the extractant is at least one of n-pentane, n-hexane and diethyl ether. The oil in the petroleum sample can be dissolved, and the conditions of extraction separation comprise: the temperature is 24-30 ℃ and the time is 1-2 h.

S104, starting the air cylinder 42 to enable the sliding pipe 41 to extend into the separation shell 32;

the sliding tube 41 can suck up the water phase after extending into the separating shell 32.

S105, starting the water pump 43, and enabling the upper-layer water phase in the separation shell 32 to enter a dialysis membrane 44 through the sliding pipe 41 and the water pump 43 for dialysis to obtain a mixture;

s106, putting the mixture into a drying shell 45, and heating and evaporating water through a heating resistor 46 to obtain a polymer;

s107 the polymer concentration is calculated based on the mass of the polymer and the volume of the petroleum sample.

The formula for the polymer concentration can be:

C＝(M×1000/V)-C₀

wherein M is the mass of the polymer, V is the volume of the petroleum sample, C₀For preparing water backgroundAnd (4) concentration.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.