1. The utility model provides an automatic decompression current-limiting sampling device of high temperature high pressure fluid which characterized in that: comprises a sampling inlet valve (1), the inlet of the sampling inlet valve (1) is connected with a high-temperature and high-pressure fluid to be measured, the outlet of the sampling inlet valve is connected with the inlet of an automatic pressure reducing and limiting Tesla valve bank (2), the outlet of a sampling cooler (3) connected with the outlet of the automatic pressure reducing and limiting Tesla valve bank (2) is connected with the inlet of a fluid to be measured, the outlet of the sampling cooler (3) is connected with the inlet of an electronic thermostat (5) through an electronic thermostat inlet valve (4), the outlet of the electronic thermostat (5) is connected with an electronic thermostat outlet valve (6) and then divided into five paths, the first path is connected with a manual sampling valve (7) for manual sampling, the second path is connected with a conductivity sampling inlet valve (8) and a conductivity sampling module (10) for conductivity measurement, the third path is connected with a pH sampling inlet valve (9) and a pH sampling module (11) for pH measurement, and the fourth path is connected with a silicon ion sampling module inlet valve (12) and a silicon ion sampling module (14) for silicon ion measurement, the fifth path is connected with an inlet valve (13) of the sodium ion sampling module and the sodium ion sampling module (15) for sodium ion measurement; the fluid outlet of conductivity sampling module (10), pH sampling module (11), silicon ion sampling module (14) and sodium ion sampling module (15) connects circulating water cooling tower (16) entry, circulating water cooling tower (16) exit linkage circulating water pond (17), circulating water pond (17) export is connected sample cooler (3) cooling water entry through circulating water pump (18) and coolant filling opening (19), sample cooler (3) cooling water exit linkage circulating water cooling tower (16) entry.

2. The automatic pressure reducing, flow limiting and sampling device for high-temperature and high-pressure fluid according to claim 1, wherein: the measured high-temperature high-pressure fluid is a fluid exceeding the saturation pressure.

3. The automatic pressure reducing, flow limiting and sampling device for high-temperature and high-pressure fluid according to claim 1, wherein: the automatic pressure reducing and flow limiting Tesla valve set (2) is used for automatically reducing pressure and limiting flow of high-temperature and high-pressure fluid, the automatic pressure reducing and flow limiting Tesla valve set (2) is a valve set formed by sequentially connecting a series of Tesla valves end to end, and different Tesla valve numbers are set according to the magnitude of pressure difference of an inlet and an outlet of a sampling device.

4. The automatic pressure reducing, flow limiting and sampling device for high-temperature and high-pressure fluid according to claim 1, wherein: even if the sampling cooler (3) fails, the automatic pressure-reducing and flow-limiting Tesla valve group (2) gasifies fluid in the temperature and pressure reducing process, the volume of the gasified fluid is sharply increased, the corresponding flow rate is sharply increased, the pressure reducing effect of the Tesla valve is also sharply increased, the initial sampling flow is maintained, and the damage to sampling personnel and subsequent constant-temperature and sampling detection devices is avoided.

5. The working method of the automatic decompression, flow-limiting and sampling device for high-temperature and high-pressure fluid as claimed in any one of claims 1 to 4, characterized in that: the tested high-temperature and high-pressure fluid enters an automatic pressure reducing and flow limiting Tesla valve set (2) for pressure reducing and flow limiting after passing through a sampling inlet valve (1), then the sample fluid enters a sampling cooler (3) for cooling, the cooled sample fluid enters an electronic thermostat (5) through an electronic thermostat inlet valve (4) for further constant temperature and stability, the sample fluid flows out through an electronic thermostat outlet valve (6) after the temperature of the sample fluid is constant, then the sample fluid is manually sampled through a manual sampling valve (7), or conductivity measurement is performed by a conductivity sampling inlet valve (8) and a conductivity sampling module (10), or the pH measurement is carried out through a pH sampling inlet valve (9) and a pH sampling module (11), or silicon ion measurement is carried out through a silicon ion sampling module inlet valve (12) and a silicon ion sampling module (14), or sodium ion measurement is carried out through a sodium ion sampling module inlet valve (13) and a sodium ion sampling module (15); the measured fluid enters a circulating water cooling tower (16) for cooling and then enters a circulating water pool (17), then is injected into a cooling medium injection port (19) by a circulating water pump (18), enters a sampling cooler (3) again for cooling the measured fluid and then enters the circulating water cooling tower (16) for cooling and recycling.

Background

At present, for sampling high-temperature and high-pressure fluid, a conventional pressure reducing valve is adopted at home and abroad for pressure reduction, and a sampling cooler is cooled to normal temperature.

The pressure reducing valve has a complex structure and a small flow cross-sectional area. If the sampling system is unreasonably installed and the connecting pipe is improper, the valve is not smooth or does not work, the valve does not play a role in reducing pressure or is directly communicated with a reducing valve, and the sampling system can not work normally due to the fact that the pressure difference between the inlet and the outlet is too small.

The sampling cooler is thin in pipe wall design due to the fact that heat exchange is needed, leakage is easily caused due to corrosion, abrasion and the like, and the work of a sampling system is influenced. Meanwhile, as the cooling medium also needs a more complex system to maintain operation, once the system cannot work normally, the operation of the whole sampling system is also influenced.

No matter the relief pressure valve can not work normally or the sampling cooler fails, high-temperature and high-pressure gas possibly flows through the sampling system in the sampling area and is directly sprayed out from the sampling port, so that sampling personnel and subsequent detection devices are damaged, and unnecessary loss is caused.

At present, no simple, effective and safe automatic pressure-reducing and flow-limiting sampling device and method for high-temperature and high-pressure fluid are used for sampling the high-temperature and high-pressure fluid.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an automatic pressure reducing and flow limiting sampling device and method for high-temperature and high-pressure fluid.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic decompression flow-limiting sampling device for high-temperature and high-pressure fluid comprises a sampling inlet valve 1, wherein the inlet of the sampling inlet valve 1 is connected with the high-temperature and high-pressure fluid to be detected, the outlet of the automatic decompression flow-limiting Tesla valve set 2 is connected with the inlet of an automatic decompression flow-limiting Tesla valve set 2, the outlet of the sampling cooler 3 is connected with the inlet of an electronic thermostat 5 through an electronic thermostat inlet valve 4, the outlet of the electronic thermostat 5 is divided into five paths after being connected with an electronic thermostat outlet valve 6, the first path is connected with a manual sampling valve 7 for manual sampling, the second path is connected with a conductivity sampling inlet valve 8 and a conductivity sampling module 10 for conductivity measurement, the third path is connected with a pH sampling inlet valve 9 and a pH sampling module 11 for pH measurement, and the fourth path is connected with a silicon ion sampling inlet valve 12 and a silicon ion sampling module 14 for silicon ion measurement, the fifth path is connected with an inlet valve 13 of the sodium ion sampling module and a sodium ion sampling module 15 for sodium ion measurement; the fluid outlets of the conductivity sampling module 10, the pH sampling module 11, the silicon ion sampling module 14 and the sodium ion sampling module 15 are connected with the inlet of a circulating water cooling tower 16, the outlet of the circulating water cooling tower 16 is connected with a circulating water pool 17, the outlet of the circulating water pool 17 is connected with the cooling water inlet of a sampling cooler 3 through a circulating water pump 18 and a cooling medium injection port 19, and the cooling water outlet of the sampling cooler 3 is connected with the inlet of the circulating water cooling tower 16.

The measured high-temperature high-pressure fluid is a fluid exceeding the saturation pressure.

The automatic pressure reducing and flow limiting Tesla valve set 2 is used for automatically reducing pressure and limiting flow of high-temperature and high-pressure fluid, the automatic pressure reducing and flow limiting Tesla valve set 2 is a valve set formed by sequentially connecting a series of Tesla valves end to end, and different Tesla valve numbers are set according to the magnitude of pressure difference of an inlet and an outlet of a sampling device.

Even if the sampling cooler 3 fails, the automatic pressure-reducing and flow-limiting Tesla valve set 2 gasifies fluid in the temperature and pressure reducing process, the volume of the gasified fluid is sharply increased, the corresponding flow rate is sharply increased, the pressure reducing effect of the Tesla valve is sharply increased, the initial sampling flow is maintained, and the damage to sampling personnel and subsequent constant-temperature and sampling detection devices is avoided.

The working method of the automatic decompression flow-limiting sampling device for high-temperature and high-pressure fluid comprises the steps that the tested high-temperature and high-pressure fluid enters the automatic decompression flow-limiting Tesla valve group 2 for decompression flow limitation after passing through the sampling inlet valve 1, then the sample fluid enters a sampling cooler 3 for cooling, the cooled sample fluid enters an electronic thermostat 5 through an electronic thermostat inlet valve 4 for further constant temperature and stability, the sample fluid flows out through an electronic thermostat outlet valve 6 after the temperature of the sample fluid is constant, then the sample fluid is sampled manually through a manual sampling valve 7, either the conductivity measurement is performed through the conductivity sample inlet valve 8 and the conductivity sampling module 10, or the pH measurement is performed through the pH sample inlet valve 9 and the pH sampling module 11, or silicon ion measurements are taken through the silicon ion sampling module inlet valve 12 and the silicon ion sampling module 14, or sodium ion measurement is carried out through the sodium ion sampling module inlet valve 13 and the sodium ion sampling module 15; the measured fluid enters a circulating water cooling tower 16 to be cooled and then enters a circulating water pool 17, then is injected into a cooling medium injection port 19 by a circulating water pump 18, enters a sampling cooler 3 again to be cooled, and then enters the circulating water cooling tower 16 to be cooled and recycled.

Compared with the prior art, the invention has the following advantages:

1. the device automatically reduces the pressure and limits the flow by a Tesla valve group with non-mechanical characteristics, and does not need to arrange a mechanical pressure reducing valve with complex structure and poor reliability.

2. The device has low failure rate, and is not easy to have the conditions of capillary or balance hole blockage, diaphragm deformation, breakage, leakage and the like.

3. When flow reduces or sampling pressure is very little, the tesla valve resistance in this device is also less, is in the on-state moreover always, can not appear the problem that mechanical type relief pressure valve spring structure needs certain pressure just can move, so this device can not be because of sample fluid load flow little or rear end sampling pressure can disappear gradually under the no flow condition, can not maintain set pressure to the condition of unable sample.

4. Even if the sampling cooler 3 fails, the automatic pressure-reducing and flow-limiting Tesla valve set 2 gasifies fluid in the temperature and pressure reducing process, the volume of the gasified fluid is sharply increased, the corresponding flow rate is sharply increased, the pressure reducing effect of the Tesla valve is sharply increased, the initial sampling flow is maintained, and the damage to sampling personnel and subsequent constant-temperature and sampling detection devices is avoided.

Drawings

FIG. 1 is a schematic view of an automatic pressure-reducing, flow-limiting and sampling device for high-temperature and high-pressure fluid.

Detailed Description

The structure and operation of the present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the automatic pressure-reducing and flow-limiting sampling device for high-temperature and high-pressure fluid of the present invention includes a sampling inlet valve 1, an automatic pressure-reducing and flow-limiting tesla valve set 2, a sampling cooler 3, an electronic thermostat inlet valve 4, an electronic thermostat 5, an electronic thermostat outlet valve 6, a manual sampling valve 7, a conductivity sampling inlet valve 8, a pH sampling inlet valve 9, a conductivity sampling module 10, a pH sampling module 11, a silicon ion sampling module inlet valve 12, a sodium ion sampling module inlet valve 13, a silicon ion sampling module 14, a sodium ion sampling module 15, a circulating water cooling tower 16, a circulating water tank 17, a circulating water pump 18, and a cooling medium injection port 19. The connection relation of each part is as follows: an inlet of a sampling inlet valve 1 is connected with a high-temperature and high-pressure fluid to be measured, an outlet of the sampling inlet valve is connected with an inlet of an automatic pressure reducing and flow limiting Tesla valve bank 2, an outlet of a fluid to be measured of an automatic pressure reducing and flow limiting Tesla valve bank 2 is connected with an inlet of a fluid to be measured of a sampling cooler 3, an outlet of the sampling cooler 3 is connected with an inlet of an electronic thermostat 5 through an inlet valve 4 of the electronic thermostat, an outlet of the electronic thermostat 5 is connected with an outlet valve 6 of the electronic thermostat and then divided into five paths, the first path is connected with a manual sampling valve 7 for manual sampling, the second path is connected with a conductivity sampling inlet valve 8 and a conductivity sampling module 10 for conductivity measurement, the third path is connected with a pH sampling inlet valve 9 and a pH sampling module 11 for pH measurement, the fourth path is connected with an inlet valve 12 of a silicon ion sampling module 14 for silicon ion measurement, and the fifth path is connected with an inlet valve 13 of a sodium ion sampling module 15 for sodium ion measurement; the fluid outlets of the conductivity sampling module 10, the pH sampling module 11, the silicon ion sampling module 14 and the sodium ion sampling module 15 are connected with the inlet of a circulating water cooling tower 16, the outlet of the circulating water cooling tower 16 is connected with a circulating water pool 17, the outlet of the circulating water pool 17 is connected with the cooling water inlet of a sampling cooler 3 through a circulating water pump 18 and a cooling medium injection port 19, and the cooling water outlet of the sampling cooler 3 is connected with the inlet of the circulating water cooling tower 16.

When the device is used, an inlet of a sampling device is connected with a high-temperature high-pressure fluid to be detected, the high-temperature high-pressure fluid to be detected enters an automatic pressure reduction and flow limitation Tesla valve group 2 through a sampling inlet valve 1 to carry out pressure reduction and flow limitation, then enters a sampling cooler 3 to be cooled, the cooled sampling fluid enters an electronic thermostat 5 through an electronic thermostat inlet valve 4 to further keep constant temperature and stable, the sampling fluid flows out through an electronic thermostat outlet valve 6 after the temperature of the sampling fluid is kept constant, and then the manual sampling is carried out through a manual sampling valve 7; or conductivity measurements are taken through the conductivity sample inlet valve 8 and conductivity sampling module 10; or the pH measurement is performed through the pH sampling inlet valve 9 and the pH sampling module 11; or silicon ion measurement is carried out through the silicon ion sampling module inlet valve 12 and the silicon ion sampling module 14; or sodium ion measurements are taken through the sodium ion sampling module inlet valve 13 and the sodium ion sampling module 15. The measured fluid enters a circulating water cooling tower 16 for cooling, then enters a circulating water pool 17, is injected into a cooling medium injection port 19 by a circulating water pump 18, enters the sampling cooler 3 again for cooling the measured fluid, and then enters the circulating water cooling tower 16 for cooling and recycling.