Fluid medium discharge experiment device

Abstract

The invention provides a fluid medium release experiment device. The fluid medium release experiment device comprises a gas supply system, a medium storage assembly, a gas release system, a first pressure acquisition system, a first temperature acquisition system and a control system. The gas supply system is at least used for supplying carbon dioxide gas and used for pressurizing the gas and conveying the gas to the medium storage assembly, and the storage pressure of the medium storage assembly is larger than or equal to 35 MPa. The gas release system comprises at least one first electric sleeve adjusting valve which is connected in series and used for releasing the high-pressure medium in the medium storage assembly step by step. The first pressure collection system is used for collecting the pressure value of the downstream end of each first electric sleeve adjusting valve. The first temperature collecting system is used for collecting the temperature value of the upstream end of each first electric sleeve adjusting valve. The control system is used for acquiring a pressure value acquired by the first pressure acquisition system and a temperature value acquired by the first temperature acquisition system. The fluid medium discharge experiment device provided by the invention can create a high-pressure environment so as to realize industrial-grade throttling discharge.

Description

Technical Field

[0001] The invention relates to the technical field of petrochemical industry, and in particular to a fluid medium release experimental device. Background Art

[0002] Water-gas alternating injection flooding technology is an effective way to improve crude oil recovery. The displacement media of water-gas alternating flooding are water and gas, and the gas often uses high-purity carbon dioxide to obtain the highest displacement efficiency. In actual engineering, the source of carbon dioxide gas is very limited, and nitrogen, hydrocarbon gas, and high-carbon dioxide hydrocarbon gas may be used as a substitute. Carbon dioxide water-gas alternation is the alternating injection of water slugs and carbon dioxide slugs, which can effectively solve the problem of viscous fingering and gas channeling when using carbon dioxide as a displacement medium. At the same time, the oil and gas mass transfer effect is enhanced, the swept volume is effectively expanded, the gas utilization rate is improved, and the carbon dioxide flooding effect is improved.

[0003] The water-gas alternating injection flooding technology requires the high-pressure gas, which is usually above 35MPa, to be reduced to normal pressure and released or subsequently processed so that water can be injected into the wellbore in the subsequent process. In this process, it is necessary to consider how to reduce the pressure of the high-pressure gas and the possible problems of hydrate freezing, pipeline vibration, noise, etc. that may be caused during the decompression process.

[0004] It is unrealistic to conduct high-pressure gas release experiments on an actual engineering scale, so it is necessary to establish an experimental device that can meet the relevant experimental requirements. The design pressure of the existing gas throttling and release experimental devices is generally not high, with the highest being around 10MPa, which cannot meet the requirements of high-pressure gas release experiments. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fluid medium release test device, which aims to solve the problem that the design pressure of the existing gas throttling release test device in the related art is below 10MPa and cannot perform a release test on a high-pressure gas above 35MPa.

[0006] The present invention provides a fluid medium release experimental device, comprising: A gas supply system, the gas supply system comprising a gas supply pipeline and a gas supply component and a gas booster component sequentially arranged on the gas supply pipeline along a gas supply direction, the gas supply component comprising at least a carbon dioxide gas source; A medium storage assembly, wherein the inlet of the medium storage assembly is connected to the downstream end of the gas supply pipeline, and the storage pressure of the medium storage assembly is greater than or equal to 35 MPa; A gas discharge system, the gas discharge system comprising a gas discharge pipeline and at least one first electric casing regulating valve, the first electric casing regulating valve being sequentially connected in series to the gas discharge pipeline along a gas discharge direction, the upstream end of the gas discharge pipeline being connected to the outlet of the medium storage assembly, and the nominal pressure of the first electric casing regulating valve being greater than or equal to greater than or equal to 35 MPa; A first pressure collection system, the first pressure collection system is used to collect pressure values ​​at a plurality of first pressure detection points on the gas discharge pipeline, the first pressure detection points are located at the downstream end of each of the first electric casing regulating valves; A first temperature acquisition system, the first temperature acquisition system is used to collect temperature values ​​at a plurality of first temperature detection points on the gas discharge pipeline, the first temperature detection points being located at an upstream end of each of the first electric casing regulating valves; A control system, wherein the control system is electrically connected to the first electric sleeve regulating valve for controlling the opening of the first electric sleeve regulating valve, and the control system is communicatively connected to the first pressure acquisition system and the first temperature acquisition system for acquiring the pressure value at each of the first pressure detection points and the temperature value at each of the first temperature detection points.

[0007] The fluid medium discharge experimental device provided by the present invention also includes: A water supply system, the water supply system comprising a water supply pipeline and a water supply component and a liquid boosting component sequentially arranged on the water supply pipeline along a water supply direction, wherein a downstream end of the water supply pipeline is connected to an inlet of the medium storage component; An air-water discharge system, the air-water discharge system comprising an air-water discharge pipeline and a second electric sleeve regulating valve and a window kettle sequentially connected in series on the air-water discharge pipeline along the air-water discharge direction, the upstream end of the air-water discharge pipeline is connected to the outlet of the medium storage assembly, and the nominal pressure of the second electric sleeve regulating valve is greater than or equal to greater than or equal to 35 MPa; A second pressure collection system, the second pressure collection system is used to collect the pressure value at a second pressure detection point on the gas-water discharge pipeline, the second pressure detection point is located between the second electric casing regulating valve and the window kettle; A second temperature acquisition system, the second temperature acquisition system is used to collect the temperature value of a second temperature detection point on the gas-water discharge pipeline, the second temperature detection point is located upstream of the second electric casing regulating valve; The second pressure acquisition system and the second temperature acquisition system are both in communication connection with the control system, and the control system is used to obtain the pressure value at the second pressure detection point and the temperature value at the second temperature detection point.

[0008] According to the fluid medium release experimental device provided by the present invention, the gas supply component further includes at least one or both of a nitrogen gas source and a methane gas source.

[0009] According to the fluid medium release experimental device provided by the present invention, the boosting component includes a boosting pump, an air compressor and a heat exchanger, the boosting pump and the heat exchanger are connected in series on the air supply pipeline in sequence along the air supply direction of the air supply pipeline, the air compressor is connected to the boosting pump, and the air compressor is used to provide power for the boosting pump.

[0010] According to the fluid medium release experimental device provided by the present invention, the medium storage component includes a pressure storage tank, a heating device is provided on the pressure storage tank, a first temperature sensor is provided on the pressure storage tank, and a second vacuum pressure gauge is provided at the outlet of the pressure storage tank.

[0011] According to the fluid medium release experimental device provided by the present invention, the water supply system includes a normal pressure storage tank and a water pump, and the normal pressure storage tank and the water pump are connected in series on the water supply pipeline along the water supply direction of the water supply pipeline.

[0012] According to the fluid medium release experimental device provided by the present invention, three of the first electric sleeve regulating valves are connected in series on the gas release pipeline.

[0013] According to the fluid medium discharge experimental device provided by the present invention, the distance between two adjacent first electric casing regulating valves is greater than 2 meters.

[0014] According to the fluid medium release experimental device provided by the present invention, a heating device is also provided on the outside of the gas release pipeline.

[0015] According to the fluid medium release experimental device provided by the present invention, a heating temperature control device is provided on the heating device.

[0016] The present invention adopts the above technical solution, which has the following advantages: The fluid medium release experimental device provided by the present invention includes a gas supply system, a medium storage component, a gas release system, a first pressure collection system, a first temperature collection system and a control system. The gas supply system includes a gas supply pipeline and a gas supply component and a gas booster component sequentially arranged on the gas supply pipeline along the gas supply direction. The inlet of the medium storage component is connected to the downstream end of the gas supply pipeline. The gas release system includes a gas release pipeline and at least one first electric sleeve regulating valve sequentially connected in series on the gas release pipeline along the gas release direction, and the upstream end of the gas release pipeline is connected to the outlet of the medium storage component. The first pressure collection system is used to collect the pressure value of the downstream end of each first electric sleeve regulating valve on the gas release pipeline. The first temperature collection system is used to collect the temperature value of the upstream end of each first electric sleeve regulating valve on the gas release pipeline. The control system is electrically connected to the first electric sleeve regulating valve for controlling the opening of the first electric sleeve regulating valve, and the control system is used to obtain the pressure value collected by the first pressure collection system and the temperature value collected by the first temperature collection system. Since the storage pressure of the medium storage assembly used in the fluid medium discharge experimental device provided by the present invention is greater than or equal to 35MPa, and the tolerance pressure of the first electric sleeve regulating valve is greater than or equal to 35MPa, and a boosting device is provided, a high-pressure environment can be created to achieve industrial-grade throttling and discharge, so that the discharge pressure of the fluid medium can be above 35MPa, meeting the pressure requirements of actual engineering scales. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of a fluid medium release experimental device provided in one embodiment of the present invention.

[0019] Reference numerals: 110: gas supply pipeline; 120: carbon dioxide branch; 121: carbon dioxide cylinder; 122: first pressure reducing valve; 123: first ball valve; 124: first vacuum pressure gauge; 130: nitrogen branch; 131: nitrogen cylinder; 132: second pressure reducing valve; 133: second mass flow meter; 134: second ball valve; 140: hydrocarbon gas branch; 141: hydrocarbon gas cylinder; 142: third pressure reducing valve; 143: third mass flow meter; 144: third ball valve; 210: Booster pump; 220: Air compressor; 230: Heat exchanger; 310: pressure storage tank; 320: heating device; 330: first temperature sensor; 340: second vacuum pressure gauge; 350: first mass flow meter; 410: gas release pipeline; 420: first electric casing regulating valve; 430: first pressure sensor; 440: second temperature sensor; 500: control system; 610: water supply pipeline; 620: water tank; 630: fourth ball valve; 640: explosion-proof gear flowmeter; 650: water pump; 710: gas and water release pipeline; 720: second electric sleeve regulating valve; 730: window kettle; 740: second pressure sensor; 750: third temperature sensor; 810: Heating device; 820: Heating temperature control device. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0026] The present invention provides a fluid medium release experimental device, including a gas supply system, a medium storage component, a gas release system, a first pressure collection system, a first temperature collection system and a control system 500. The gas supply system includes a gas supply pipeline 110 and a gas supply component and a gas booster component sequentially arranged on the gas supply pipeline 110 along the gas supply direction. The inlet of the medium storage component is connected to the downstream end of the gas supply pipeline 110. The gas release system includes a gas release pipeline 410 and at least one first electric sleeve regulating valve 420 sequentially connected in series on the gas release pipeline 410 along the gas release direction, and the upstream end of the gas release pipeline 410 is connected to the outlet of the medium storage component. The first pressure collection system is used to collect the pressure value of the downstream end of each first electric sleeve regulating valve 420 on the gas release pipeline 410. The first temperature collection system is used to collect the temperature value of the upstream end of each first electric sleeve regulating valve 420 on the gas release pipeline 410. The control system 500 is electrically connected to the first electric sleeve regulating valve 420, and is used to control the opening of the first electric sleeve regulating valve 420, and the control system 500 is used to obtain the pressure value collected by the first pressure collection system and the temperature value collected by the first temperature collection system. Since the storage pressure of the medium storage assembly used in the fluid medium discharge experimental device provided by the present invention is greater than or equal to 35MPa, and the tolerance pressure of the first electric sleeve regulating valve 420 is greater than or equal to 35MPa, and a boosting device is provided, a high-pressure environment can be created to achieve industrial-grade throttling and discharge, so that the discharge pressure of the fluid medium can be above 35MPa, meeting the pressure requirements of the actual engineering scale.

[0027] Combine the following Figure 1 The fluid medium release experimental device of the present invention is described.

[0028] An embodiment of the present invention provides a fluid medium release experimental device, including a gas supply system, a medium storage component, a gas release system, a first pressure collection system, a first temperature collection system and a control system 500. The gas supply system, the medium storage component and the gas release system are connected in series, the gas supply system is used to pressurize the experimental gas and deliver it to the medium storage component, when the pressure value in the medium storage component reaches the experimental pressure, the control system 500 controls the gas release system to perform a release experiment, during the experiment, the first pressure collection system is used to collect the pressure value at the corresponding position on the gas release system, and transmit the collected pressure value to the control system 500, the first temperature collection system is used to collect the temperature value at the corresponding position on the gas release system, and transmit the collected temperature value to the control system 500.

[0029] The gas supply system includes a gas supply pipeline 110, a gas supply assembly and a gas booster assembly, the gas supply assembly is arranged at the upstream end of the gas supply pipeline 110, and the gas booster assembly is connected in series to the gas supply pipeline 110. The gas supply assembly at least includes a carbon dioxide gas source.

[0030] Specifically, the gas supply assembly may include a carbon dioxide branch 120 and a plurality of carbon dioxide cylinders 121. For example, four carbon dioxide cylinders 121 may be provided, and the four carbon dioxide cylinders 121 are connected in parallel to the carbon dioxide branch 120. The downstream end of the carbon dioxide branch 120 is connected to the upstream end of the gas supply pipeline 110. A first ball valve 123 and a first pressure reducing valve 122 are also connected in series at the downstream end of the carbon dioxide branch 120. The first pressure reducing valve 122 and the first ball valve 123 are connected in series along the gas supply direction of the carbon dioxide branch 120. A first vacuum pressure gauge 124 is also provided on the carbon dioxide branch 120, and the detection end of the first vacuum pressure gauge 124 is connected to the upstream end of the first pressure reducing valve 122.

[0031] The first ball valve 123 is used to open or close the carbon dioxide branch 120 , the first pressure reducing valve 122 is used to control the gas supply pressure of carbon dioxide, and the first vacuum pressure gauge 124 is used to detect the pressure of carbon dioxide gas.

[0032] The gas supply assembly may further include a nitrogen branch 130 and at least one nitrogen cylinder 131. For example, one nitrogen cylinder 131 may be provided, and the nitrogen cylinder 131 is connected to the upstream end of the nitrogen branch 130, and the downstream end of the nitrogen branch 130 is connected to the upstream end of the gas supply pipeline 110. A second ball valve 134, a second pressure reducing valve 132, and a second mass flow meter 133 are also connected in series on the nitrogen branch 130. The nitrogen cylinder 131, the second pressure reducing valve 132, the second mass flow meter 133, and the second ball valve 134 are connected in series in sequence along the gas supply direction of the nitrogen branch 130.

[0033] The second ball valve 134 is used to open or close the nitrogen branch 130 , the second pressure reducing valve 132 is used to control the supply pressure of nitrogen, and the second mass flow meter 133 is used to measure the gas mass flow of the nitrogen branch 130 .

[0034] Furthermore, the gas supply assembly may further include a hydrocarbon gas branch 140 and at least one hydrocarbon gas cylinder 141, for example, the hydrocarbon gas cylinder 141 may be a methane gas cylinder, one methane gas cylinder may be provided, the methane gas cylinder is connected to the upstream end of the methane branch, and the downstream end of the hydrocarbon gas branch 140 is connected to the upstream end of the gas supply pipeline 110. A third ball valve 144, a third pressure reducing valve 142 and a third mass flow meter 143 are also connected in series on the hydrocarbon gas branch 140, and the methane gas cylinder, the third pressure reducing valve 142, the third mass flow meter 143 and the third ball valve 144 are sequentially connected in series along the gas supply direction of the hydrocarbon gas branch 140.

[0035] The third ball valve 144 is used to open or close the hydrocarbon gas branch 140, the third pressure reducing valve 142 is used to control the gas supply pressure of methane, and the third mass flow meter 143 is used to measure the gas mass flow of the methane branch.

[0036] The gas boosting assembly includes a boosting pump 210 , an air compressor 220 and a heat exchanger 230 . The boosting pump 210 and the heat exchanger 230 are sequentially connected in series on the gas supply pipeline 110 along the gas supply direction of the gas supply pipeline 110 , and the air compressor 220 is connected to the boosting pump 210 .

[0037] The booster pump 210 is used to boost the nitrogen and methane, and the air compressor 220 is used to provide gas boosting power for the booster pump 210. The heat exchanger 230 is used to reduce the temperature of carbon dioxide to below the liquefaction temperature.

[0038] The inlet of the medium storage assembly is connected to the downstream end of the gas supply pipeline 110 through a pipeline, and the storage pressure of the medium storage assembly is greater than or equal to 35 MPa. The medium storage assembly is at least used to store high-pressure gas supplied by the gas supply system.

[0039] Specifically, the medium storage assembly includes a pressure storage tank 310 , a heating device 320 is disposed on the outside of the pressure storage tank 310 , a first temperature sensor 330 is also disposed on the pressure storage tank 310 , and a second vacuum pressure gauge 340 is also disposed at the outlet of the pressure storage tank 310 .

[0040] The inlet of the pressure storage tank 310 is connected to the downstream end of the gas supply pipeline 110 through a pipeline, and the outlet of the pressure storage tank 310 is connected to the upstream end of the gas release system through a pipeline. A first mass flow meter 350 is also provided on the pipeline between the pressure storage tank 310 and the upstream end of the gas release system.

[0041] The second vacuum pressure gauge 340 is used to measure the outlet pressure of the pressure storage tank 310, and the heating device 320 can be a jacketed heating device 320, which is used to heat the medium in the pressure storage tank 310, for example, it can be used to heat the temperature of carbon dioxide to above the gasification temperature. The first mass flow meter 350 is used to measure the mass flow of the gas at the outlet of the pressure storage tank 310.

[0042] The gas discharge system includes a gas discharge pipeline 410 and at least one first electric sleeve regulating valve 420. The upstream end of the gas discharge pipeline 410 is connected to the outlet of the medium storage assembly, and the downstream end of the gas discharge pipeline 410 is connected to the atmosphere. The first electric sleeve regulating valve 420 is connected in series to the gas discharge pipeline 410. When the number of the first electric sleeve regulating valves 420 is greater than or equal to two, multiple first electric sleeve regulating valves 420 are connected in series through the gas discharge pipeline 410. The nominal pressure of the first electric sleeve regulating valve 420 is greater than or equal to 35 MPa.

[0043] Specifically, the gas discharge system may include a gas discharge pipeline 410 and three first electric sleeve regulating valves 420. The upstream end of the gas discharge pipeline 410 is connected to the downstream end of the first mass flow meter 350, and the downstream end of the gas discharge pipeline 410 is connected to the atmosphere. The three first electric sleeve regulating valves 420 are connected in series to the gas discharge pipeline 410, and the distance between two adjacent first electric sleeve regulating valves 420 needs to be greater than two meters.

[0044] The first pressure collection system is used to collect pressure values ​​at a plurality of first pressure detection points on the gas discharge pipeline 410 , and the plurality of first pressure detection points are respectively located at the downstream end of the corresponding first electric casing regulating valve 420 .

[0045] Specifically, the first pressure acquisition system may include three first pressure sensors 430, which are respectively connected in series to three first pressure detection points of the gas relief pipeline 410. The three first pressure detection points are respectively located at the downstream ends of the three first electric casing regulating valves 420, and are respectively used to detect the fluid pressure in the gas pressure relief pipeline after throttling and pressure relief of each first electric casing regulating valve 420.

[0046] The first temperature collection system is used to collect temperature values ​​at a plurality of first temperature detection points on the gas discharge pipeline 410 , and the first temperature detection points are located at the upstream end of each corresponding first electric sleeve regulating valve 420 .

[0047] Specifically, the first temperature acquisition system may include three second temperature sensors 440, which are respectively connected in series to three first temperature detection points of the gas relief pipeline 410. The three first temperature detection points are respectively located at the upstream ends of the three first electric casing regulating valves 420, and are respectively used to detect the fluid temperature in the gas pressure relief pipeline before throttling and pressure relief of each first electric casing regulating valve 420.

[0048] The control system 500 is electrically connected to the first electric sleeve regulating valve 420 for controlling the opening of the first electric sleeve regulating valve 420, and the control system 500 is communicatively connected to the first pressure acquisition system and the first temperature acquisition system for acquiring the pressure value at each first pressure detection point and the temperature value at each first temperature detection point.

[0049] Specifically, the control system 500 is electrically connected to the three first electric sleeve regulating valves 420, and is used to change the opening of the three first electric sleeve regulating valves 420 to control the throttling process. At the same time, the control system 500 is communicatively connected to the first pressure acquisition system and the first temperature acquisition system, and is used to obtain the fluid pressure in the gas pressure relief pipeline after the throttling and pressure relief of each first electric sleeve regulating valve 420, and the fluid temperature in the gas pressure relief pipeline before the throttling and pressure relief of each first electric sleeve regulating valve 420.

[0050] In some embodiments of the present invention, a water supply system, a gas-water release system, a second pressure collection system and a second temperature collection system are also included.

[0051] The water supply system includes a water supply pipeline 610, a water supply assembly and a liquid boosting assembly. The water supply assembly and the liquid boosting assembly are connected in series along the water supply direction of the water supply pipeline 610. The downstream end of the water supply pipeline 610 is connected to the inlet of the medium storage assembly.

[0052] Specifically, a fourth ball valve 630 and an explosion-proof gear flowmeter 640 are sequentially connected in series along the water supply direction on the water supply pipeline 610. The water supply component may include a normal pressure storage tank, such as a water tank 620, and the outlet of the water tank 620 is connected to the upstream end of the water supply pipeline 610. The liquid boosting component may be a water pump 650, which is connected in series to the water supply pipeline 610 and is located at the downstream end of the explosion-proof gear flowmeter 640, and the downstream end of the water supply pipeline 610 is connected to the inlet of the pressure storage tank 310.

[0053] The fourth ball valve 630 is used to control the on-off of the water supply pipeline 610 , the explosion-proof gear flowmeter 640 is used to measure the water supply flow of the water tank 620 , and the water pump 650 is used to increase the water supply pressure.

[0054] The gas-water discharge system includes a gas-water discharge pipeline 710, a second electric sleeve regulating valve 720 and a window kettle 730. The second electric sleeve regulating valve 720 and the window kettle 730 are connected in series along the discharge direction of the gas-water discharge pipeline 710. The upstream end of the gas-water discharge pipeline 710 is connected to the downstream end of the first mass flowmeter 350.

[0055] The second pressure collection system is used to collect the pressure value at the second pressure detection point on the gas discharge pipeline 410 . The second pressure detection point is located between the second electric sleeve regulating valve 720 and the window kettle 730 .

[0056] Specifically, the second pressure collection system may include a second pressure sensor 740, which is connected in series to the gas-water discharge pipeline 710 and is located between the second electric casing regulating valve 720 and the window kettle 730, and is used to detect the pressure in the gas-water discharge pipeline 710 after the second electric casing regulating valve 720 throttles and releases pressure.

[0057] The second temperature collection system is used to collect the temperature value at a second temperature detection point on the gas-water discharge pipeline 710 . The second temperature detection point is located upstream of the second electric casing regulating valve 720 .

[0058] Specifically, the second temperature acquisition system may include a third temperature sensor 750 , which is connected in series to the gas-water discharge pipeline 710 and located at the upstream end of the second electric casing regulating valve 720 , and is used to detect the fluid temperature at the front end of the second electric casing regulating valve 720 .

[0059] The second pressure acquisition system and the second temperature acquisition system are both in communication connection with the control system 500 , and the control system 500 is used to obtain the pressure value acquired by the second pressure acquisition system and to obtain the temperature value acquired by the second temperature acquisition system.

[0060] The fluid medium release experimental device provided by the present invention can perform at least the following four experiments: The first one is the carbon dioxide release experiment, and its experimental process includes: The carbon dioxide cylinder 121 and the first ball valve 123 are opened, and the first pressure reducing valve 122 is adjusted to control the intake pressure of the carbon dioxide. The booster pump 210 pumps the carbon dioxide into the heat exchanger 230, and the heat exchanger 230 lowers the temperature of the carbon dioxide to below the liquefaction temperature before the carbon dioxide enters the pressure storage tank 310. The heating device 320 of the pressure storage tank 310 heats the medium inside the pressure storage tank 310 to gasify the carbon dioxide. When the pressure inside the pressure storage tank 310 reaches the experimental pressure, the carbon dioxide cylinder 121 and the first ball valve 123 are closed, thereby stopping the supply of carbon dioxide.

[0061] Then the control system 500 adjusts the opening of the first electric casing regulating valve 420 in sequence to carry out a supercritical carbon dioxide release experiment. When the pipeline pressure detected by the second vacuum pressure gauge 340 drops to 0.1 MPa, the release process is completed.

[0062] During the experiment, the three first pressure sensors 430 continuously detect the pressure values ​​at the first pressure detection points and transmit the pressure values ​​to the control system 500. At the same time, the three second temperature sensors 440 also continuously detect the temperature values ​​at the first temperature detection points and transmit the temperature values ​​to the control system 500.

[0063] When the venting is completed, data collection is suspended, the experimental data is saved and the experimental number and working conditions are noted, thus completing a set of supercritical carbon dioxide venting experiments.

[0064] The second type is a mixed gas release experiment. The experimental process is different from the first experimental process in that while the carbon dioxide cylinder 121 is supplying gas, the nitrogen branch 130 and / or the hydrocarbon gas branch 140 can be selectively opened.

[0065] The third type is the hydrate formation test when carbon dioxide and water are mixed. The test process is as follows: The carbon dioxide cylinder 121 and the first ball valve 123 are opened, and the first pressure reducing valve 122 is adjusted to control the intake pressure of the carbon dioxide. The booster pump 210 pumps the carbon dioxide into the heat exchanger 230, and the heat exchanger 230 reduces the temperature of the carbon dioxide to below the liquefaction temperature before the carbon dioxide enters the pressure storage tank 310. At the same time, the fourth ball valve 630 and the water pump 650 are opened to send the water in the water tank 620 into the pressure storage tank 310 together with the carbon dioxide.

[0066] The heating device 320 of the pressure storage tank 310 heats the medium inside the pressure storage tank 310 to gasify the carbon dioxide. When the pressure inside the pressure storage tank 310 reaches the experimental pressure, the carbon dioxide cylinder 121, the booster pump 210 and the first ball valve 123 are closed, and the fourth ball valve 630 and the water pump 650 are closed at the same time, thereby stopping the supply of carbon dioxide and water.

[0067] Then the control system 500 adjusts the opening of the second electric casing regulating valve 720, and observes the hydrate generation process through the window of the window kettle 730. When the pipeline pressure detected by the second vacuum pressure gauge 340 drops to 0.1 MPa, the venting process is completed.

[0068] During the experiment, the second pressure sensor 740 continuously detects the pressure value at the second pressure detection point and transmits the pressure value to the control system 500. At the same time, the third temperature sensor 750 also continuously detects the temperature value at the second temperature detection point and transmits the temperature value to the control system 500.

[0069] The fourth type is a hydrate formation test when the mixed gas is mixed with water. Different from the third test process, methane and / or nitrogen need to be supplied to the pressure storage tank 310 at the same time.

[0070] The fluid medium release experimental device provided by the present invention, the supporting pressure storage tank 310, the first electric sleeve regulating valve 420 and the second electric sleeve regulating valve 720 and other equipment are all high-pressure resistant equipment that can withstand pressures above 35MPa, and are also equipped with boosting equipment, so that a high-pressure environment can be created. By designing an experimental industrial-grade throttling and release through a large-flow gas source, a test device that meets the pressure and flow requirements of the high-pressure gas release experiment is constructed, thereby solving the problems of low pressure tolerance and small flow in the device in the prior art.

[0071] In addition, the fluid medium release experimental device provided by the present invention can be used for high-pressure gas release experimental research, and can also be used for high-pressure gas hydrate experimental research.

[0072] The fluid medium discharge experimental device provided by the present invention can realize single-stage high-pressure difference throttling and pressure reduction experimental research, and can also realize multi-stage throttling and pressure reduction experimental research.

[0073] The fluid medium release experimental device provided by the present invention can be used for experimental research on the release of a single gas or a mixture of multiple gases.

[0074] In some embodiments of the present invention, a heating device 810 is further provided on the outside of the gas discharge pipeline 410, which can be used to preheat the gas discharge pipeline 410 before the experiment starts to simulate the actual operating state and prevent sudden temperature changes from causing inaccurate measurement data.

[0075] Furthermore, a heating temperature control device 820 is provided on the heating device 810 for controlling the heating temperature of the heating device 810 .

[0076] Specifically, five heating control devices are provided, one of which is arranged at the upstream end of the connection point between the gas discharge pipeline 410 and the gas-water discharge pipeline 710, three of which are arranged at the downstream ends of the three first electric casing regulating valves 420, and another one is arranged at the downstream end of the second electric casing regulating valve 720.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A fluid medium release experimental device, characterized in that: include: A gas supply system, the gas supply system comprising a gas supply pipeline (110) and a gas supply component and a gas pressurizing component sequentially arranged on the gas supply pipeline (110) along a gas supply direction, the gas supply component comprising at least a carbon dioxide gas source; a medium storage component, wherein the inlet of the medium storage component is connected to the downstream end of the gas supply pipeline (110), and the storage pressure of the medium storage component is greater than or equal to 35 MPa; A gas discharge system, the gas discharge system comprising a gas discharge pipeline (410) and at least one first electric casing regulating valve (420), the first electric casing regulating valve (420) being sequentially connected in series on the gas discharge pipeline (410) along a gas discharge direction, the upstream end of the gas discharge pipeline (410) being connected to an outlet of the medium storage component, and the nominal pressure of the first electric casing regulating valve (420) being greater than or equal to greater than or equal to 35 MPa; a first pressure collection system, the first pressure collection system being used to collect pressure values ​​at a plurality of first pressure detection points on the gas discharge pipeline (410), the first pressure detection points being located at the downstream end of each of the first electric casing regulating valves (420); a first temperature acquisition system, the first temperature acquisition system being used to acquire temperature values ​​at a plurality of first temperature detection points on the gas discharge pipeline (410), the first temperature detection points being located at an upstream end of each of the first electric casing regulating valves (420); A control system (500), wherein the control system (500) is electrically connected to the first electric sleeve regulating valve and is used to control the opening of the first electric sleeve regulating valve (420), and the control system (500) is communicatively connected to the first pressure acquisition system and the first temperature acquisition system and is used to obtain the pressure value at each of the first pressure detection points and the temperature value at each of the first temperature detection points.

2. The fluid medium release experimental device according to claim 1, characterized in that: Also includes: A water supply system, the water supply system comprising a water supply pipeline (610) and a water supply component and a liquid pressurizing component sequentially arranged on the water supply pipeline (610) along a water supply direction, the downstream end of the water supply pipeline (610) being connected to an inlet of the medium storage component; An air-water discharge system, the air-water discharge system comprising an air-water discharge pipeline (710) and a second electric sleeve regulating valve (720) and a window kettle (730) sequentially connected in series on the air-water discharge pipeline (710) along the air-water discharge direction, the upstream end of the air-water discharge pipeline (710) being connected to the outlet of the medium storage component, and the nominal pressure of the second electric sleeve regulating valve (720) being greater than or equal to greater than or equal to 35 MPa; a second pressure collection system, the second pressure collection system being used to collect the pressure value at a second pressure detection point on the gas-water discharge pipeline (710), the second pressure detection point being located between the second electric casing regulating valve (720) and the window kettle (730); a second temperature acquisition system, the second temperature acquisition system being used to acquire a temperature value at a second temperature detection point on the gas-water discharge pipeline (710), the second temperature detection point being located upstream of the second electric casing regulating valve (720); The second pressure acquisition system and the second temperature acquisition system are both in communication connection with the control system (500), and the control system (500) is used to acquire the pressure value at the second pressure detection point and the temperature value at the second temperature detection point.

3. The fluid medium release experimental device according to claim 1, characterized in that: The gas supply component further includes at least one or both of a nitrogen gas source and a methane gas source.

4. The fluid medium release experimental device according to claim 1, characterized in that: The boosting assembly comprises a boosting pump (210), an air compressor (220) and a heat exchanger (230); the boosting pump (210) and the heat exchanger (230) are sequentially connected in series on the air supply pipeline (110) along the air supply direction of the air supply pipeline (110); the air compressor (220) is connected to the boosting pump (210); and the air compressor (220) is used to provide power for the boosting pump (210).

5. The fluid medium release experimental device according to claim 1, characterized in that: The medium storage assembly comprises a pressure storage tank (310), a heating device (320) is provided on the pressure storage tank (310), a first temperature sensor (330) is provided on the pressure storage tank (310), and a second vacuum pressure gauge (340) is provided at the outlet of the pressure storage tank (310).

6. The fluid medium release experimental device according to claim 2, characterized in that: The water supply system comprises a normal pressure storage tank and a water pump (650), wherein the normal pressure storage tank and the water pump (650) are connected in series on the water supply pipeline (610) along the water supply direction of the water supply pipeline (610).

7. The fluid medium release experimental device according to claim 1, characterized in that: The gas discharge pipeline (410) is connected in series with three first electric casing regulating valves (420).

8. The fluid medium release experimental device according to claim 7, characterized in that: The distance between two adjacent first electric casing regulating valves (420) is greater than 2 meters.

9. The fluid medium release experimental device according to claim 2, characterized in that: A heating device (810) is also provided on the outside of the gas discharge pipeline (410).

10. The fluid medium release experimental device according to claim 9, characterized in that: The heating device (810) is provided with a heating temperature control device (820).

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