High-pressure physical property sampler device

Abstract

The utility model discloses a high-pressure physical property sampler device which comprises a detection assembly, a control assembly and a sampling mechanism, the sampling mechanism comprises a sampling bin, the sampling bin is provided with a floating valve, the interior of the sampling bin is divided into a first inner cavity and a second inner cavity by the floating valve, the first inner cavity is communicated with a first channel and used for storing samples, and the second inner cavity is used for storing gas media. According to the utility model, the design structure is reasonable, and the two sealing chambers are relatively increased and reduced, so that the pressure generated by a gas medium is increased and is balanced with the external pressure, and therefore, when the gas medium is used under different external pressures, the pressure of the gas medium is increased; according to the sampling pressure maintaining device, the pressure generated by the initial gas medium on the buoyancy valve only needs to be adjusted through inflation, sampling can be conveniently carried out under oil wells with different pressures, and the problems that when an existing sampling pressure maintaining device is used in a high-strength mode, a spring is easily damaged due to the influence of materials, and the application range of the device is greatly reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas sampling, in particular to a high-pressure physical property sampler device. Background Art

[0002] Reservoir sampling is a crucial task in oil and gas exploration and development. It is used to obtain representative reservoir fluid samples and analyze the reservoir's physical and chemical properties, fluid composition, and reservoir characteristics. Gases like methane in reservoir samples primarily dissolve in crude oil. As pressure decreases, they transition from a dissolved state to a free state to varying degrees. Therefore, maintaining a relatively constant pressure during sampling is crucial.

[0003] A Chinese utility model patent with publication number CN217538686U discloses a low-pressure reservoir formation fluid pressure-maintaining sampling device. By opening a one-way valve, liquid is allowed to enter the cavity through the one-way valve, and then the piston inside the cavity is pushed to move, and the piston further squeezes the spring until the liquid no longer enters. At this time, the elastic force generated by the spring compression and the pressure in the chamber reach a balance, achieving a pressure-maintaining effect on the sample. However, during use, the pressure in the oil well is relatively high. Under high-intensity use, not only is the spring easily damaged due to the influence of the material, but it is also difficult to adjust when sampling different oil wells with a large pressure span, which greatly reduces the scope of application of the device. Utility Model Content

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a high-pressure physical property sampler device.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A high-pressure physical property sampler device comprises a detection component, a control component, and a sampling mechanism having a chamber, which are detachably connected in sequence; the control component comprises a liquid inlet connected to the sampling mechanism and a drive mechanism, and the drive mechanism is used to open and close the passage connecting the liquid inlet and the sampling mechanism;

[0007] The sampling mechanism includes a sampling chamber installed at one end of the control assembly, the interior of the sampling chamber is connected to the liquid inlet through a first channel, and the first channel is respectively provided with a first control valve and a first sample transfer valve, the first control valve is used to open and close the first channel, and the first sample transfer valve is used to transfer the sample in the sampling chamber;

[0008] A floating valve is slidably connected to the inner wall of the sampling chamber, and the floating valve divides the interior of the sampling chamber into a first inner cavity and a second inner cavity. The first inner cavity is connected to the first channel and is used to store samples, and the second inner cavity is used to store gaseous media.

[0009] The second inner cavity is in communication with the outside, and a control structure is provided on the channel connecting the second inner cavity and the outside for regulating the pressure of the gas medium in the second inner cavity;

[0010] During sampling, liquid flows into the first inner cavity, pushing the floating valve to reduce the size of the second inner cavity, so that the pressure increase of the gas medium in the second inner cavity is balanced with the pressure generated by the sample in the first inner cavity.

[0011] Furthermore, a third inner cavity and a first connecting hole are formed inside the control component, and the third inner cavity is communicated with the liquid inlet and the first connecting hole respectively;

[0012] One end of the control assembly is detachably connected to a first connector with a single channel, one end of the first connector is detachably connected to the sampling chamber, a second connecting hole is defined in the first connector, one end of the second connecting hole is connected to the first connecting hole, and the other end of the second connecting hole is connected to the first inner cavity, and the first connecting hole, the third inner cavity, and the second connecting hole form the first channel;

[0013] The first control valve and the first sample transfer valve are both installed at the second connecting hole.

[0014] Furthermore, one end of the control assembly is detachably connected to a first multi-channel connector, the first connector including a first connecting end, one end of which is detachably connected to the control assembly, the other end of which is connected to a plurality of second connecting ends, and the ends of the plurality of second connecting ends remote from the first connecting end are respectively connected to a plurality of sampling chambers;

[0015] A second connecting hole is defined within the first connecting end, one end of the second connecting hole is communicated with the first connecting hole; a third connecting hole is defined within the second connecting end, one end of the third connecting hole is communicated with the first inner cavity, and the other end of the third connecting hole is communicated with the second connecting hole, the first connecting hole, the second connecting hole, the third connecting hole, and the third inner cavity forming a first channel;

[0016] A set of the first control valve and the first sample transfer valve is installed at each of the third connecting holes.

[0017] Furthermore, a first pressure probe is provided on the side of the first connector connected to the sampling chamber. The first pressure probe is located in the first inner cavity and is used to detect the sample pressure in the first inner cavity.

[0018] Furthermore, the driving mechanism includes an electric motor, an output end of the electric motor is provided with a transmission structure, one end of the transmission structure is connected to a switch piston, and the switch piston is slidably connected to the inner wall of the third inner cavity.

[0019] Furthermore, the switch piston includes a first plug body, a second plug body and a third plug body connected in sequence, and the outer sides of the first plug body, the second plug body and the third plug body are all slidably connected to the inner wall of the third inner cavity;

[0020] The second plug body has an H-shaped shape; the cross-sectional shape of the third plug body has a T-shaped shape.

[0021] Furthermore, the detection component includes a second pressure probe, a temperature probe and a water content probe, and the second pressure probe, temperature probe and water content probe are all installed on the installation frame to detect the temperature, pressure and water content in the circulation.

[0022] Furthermore, the control structure includes a third connector detachably connected to one end of the sampling chamber, and the third connector is connected to a second sample transfer valve.

[0023] Furthermore, the control structure further includes a storage component for storing a gas medium, wherein the gas medium is nitrogen;

[0024] The storage assembly includes a nitrogen tank, which is detachably connected to one end of the third connector. One end of the nitrogen tank is detachably connected to an air inlet connector, and one end of the air inlet connector is provided with a controllable air inlet, which is communicated with the nitrogen tank;

[0025] A fifth connecting hole is defined within the third connector, communicating with both ends. One end of the fifth connecting hole is connected to the sampling chamber, and the other end of the fifth connecting hole is connected to the nitrogen chamber. One side of the floating valve in the sampling chamber, the fifth connecting hole, and the nitrogen chamber form a second inner cavity.

[0026] A second control valve is provided on one side of the fifth connecting hole for opening and closing the fifth connecting hole.

[0027] Furthermore, a magnet is provided on the floating valve, and the magnet is used to detect the position of the floating valve in the sampling chamber.

[0028] Compared with the existing technology, the high-pressure physical property sampler device has the following beneficial effects:

[0029] The utility model arranges a slidable floating valve inside the sampling chamber to form two sealed chambers inside the sampling chamber, and fills one of the chambers with a gas medium. The pressure generated by the gas medium is increased and balanced with the external pressure through the relative increase and decrease of the two sealed chambers. Therefore, when used under different external pressures, it is only necessary to adjust the pressure generated by the initial gas medium on the buoyancy valve by inflation, which is convenient for sampling in oil wells with different pressures. It solves the problem that the existing sampling pressure-maintaining device is not only easily damaged by the material when used under high-intensity, but also difficult to adjust when sampling different oil wells with large pressure spans, which greatly reduces the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0031] Figure 2 It is a cross-sectional view of the utility model;

[0032] Figure 3 This is a cross-sectional view of the water-containing skeleton of the present utility model;

[0033] Figure 4 This is a cross-sectional view of the first outer tube in the utility model

[0034] Figure 5 It is a cross-sectional view of the second outer tube in the present utility model;

[0035] Figure 6 This is a cross-sectional view of the switch body in the present utility model;

[0036] Figure 7 This is a cross-sectional view of the nitrogen bin in the present invention;

[0037] Figure 8 It is a cross-sectional view of the first multi-channel connector in the present invention.

[0038] In the figure: 1. Detection component; 101. Plug; 102. Single-core plug; 103. Second connector; 104. Water-containing skeleton; 105. Water-containing probe; 106. Temperature probe; 107. Pressure inlet hole; 108. Second pressure probe; 109. Pressure-temperature skeleton; 1010. Circuit skeleton; 1011. First outer tube; 2. Control component; 201. Four-core slip ring; 202. Second outer tube; 203. Motor; 204. Coupling; 205. Rolling resistance screw; 206. Travel frame; 207. Transmission shaft; 208. Switch body; 209. Single-core slip ring; 3. Sampling mechanism; 301. Second control valve; 302. Second sample transfer valve; 303. First A one-way valve; 304, a first pressure probe; 305, a first connector; 306, a floating valve; 307, a magnet; 4, a storage component; 401, a second connector; 402, a nitrogen tank; 403, an air inlet connector; 404, a nitrogen plug; 405, a third control valve; 406, a second one-way valve; 5, a first connector; 501, a first connection end; 502, a second connection end; 503, a first control valve; 504, a first transfer valve; 6, a first channel; 601, a third connecting hole; 602, a third inner cavity; 603, a first connecting hole; 604, a second connecting hole; 7, a switch piston; 701, a first plug; 702, a second plug; 703, a third plug. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0040] like Figure 1-8As shown, the utility model provides a technical solution: a high-pressure physical property sampler device, comprising a detection component 1, a control component 2 and a sampling mechanism 3 having a chamber that can be detachably connected in sequence; the control component 2 includes a liquid inlet and a driving mechanism connected to the sampling mechanism 3, and the driving mechanism is used to open and close the passage connecting the liquid inlet and the sampling mechanism 3; the sampling mechanism 3 includes a sampling chamber installed at one end of the control component 2, the interior of the sampling chamber is connected to the liquid inlet through a first channel 6, and the first channel 6 is respectively provided with a first control valve 503 and a first sample transfer valve 504, the first control valve 503 is used to open and close the first channel 6, and the first sample transfer valve 504 is used to transfer the sample in the sampling chamber out; the inner wall of the sampling chamber is slidably connected to a floating valve 306, and the floating valve 306 divides the interior of the sampling chamber into a first inner cavity and a second inner cavity, the first inner cavity is connected to the first channel 6 for storing the sample, and the second inner cavity is used to store the gas medium; the second inner cavity is connected to the outside, and the passage connecting the second inner cavity to the outside is provided with a control structure for adjusting the pressure of the gas medium in the second inner cavity During sampling, liquid flows into the first inner chamber, pushing the float valve 306 to reduce the size of the second inner chamber, so that the pressure of the gas medium in the second inner chamber increases and balances with the pressure generated by the sample in the first inner chamber. During use, a gas medium of appropriate pressure is first introduced into the second inner chamber on the surface, pushing the float valve 306 to reduce the first inner chamber to its minimum size. Then, after the device is lowered into the wellbore, the drive mechanism opens the liquid inlet, and liquid flows into the first channel 6 through the liquid inlet and into the first cavity through the first channel 6, pushing the float valve 306 to move, causing the float valve 306 to begin moving toward the second inner chamber, reducing the volume of the second inner chamber. As the volume of the second inner chamber decreases, the pressure of the gas medium increases, eventually moving until the pressure in the second inner chamber and the pressure of the sample in the first inner chamber reach equilibrium, maintaining the sample pressure balance. A magnet 307 is provided on the float valve 306 to detect the position of the float valve 306 in the sampling chamber, thereby determining whether the gas medium is properly inflated.

[0041] A third inner cavity 602 and a first connecting hole 603 are provided inside the control component 2, and the third inner cavity 602 is connected to the liquid inlet and the first connecting hole 603 respectively; one end of the control component 2 is detachably connected to a first connector 5 of a single channel, one end of the first connector 5 is detachably connected to the sampling chamber, and a second connecting hole 604 connecting both ends is provided in the first connector 5, one end of the second connecting hole 604 is connected to the first connecting hole 603, and the other end of the second connecting hole 604 is connected to the first inner cavity, and the first connecting hole 603, the third inner cavity 602 and the second connecting hole 604 form a first channel 6; the first control valve 503 and the first sample transfer valve 504 are both installed at the second connecting hole 604.

[0042] One end of the control component 2 is detachably connected to a multi-channel first connector 5, and the first connector 5 includes a first connecting end 501, one end of the first connecting end 501 is detachably installed at one end of the control component 2, and the other end of the first connecting end 501 is connected to a plurality of second connecting ends 502, and the ends of the plurality of second connecting ends 502 away from the first connecting end 501 are respectively connected to a plurality of sampling chambers; a second connecting hole 604 is provided inside the first connecting end 501, and one end of the second connecting hole 604 is connected to the first connecting hole 603; a third connecting hole 601 is provided inside the second connecting end 502, one end of the third connecting hole 601 is connected to the first inner cavity, and the other end of the third connecting hole 601 is connected to the second connecting hole 604, the first connecting hole 603, the second connecting hole 604, the third connecting hole 601 and the third inner cavity 602 form a first channel 6; each third connecting hole 601 is installed with a group of first control valves 503 and first sample transfer valves 504.

[0043] A first pressure probe 304 is provided on the side where the first connector 5 is connected to the sampling chamber. The first pressure probe 304 is located in the first inner cavity and is used to detect the sample pressure in the first inner cavity. The driving mechanism includes an electric motor 203. The output end of the electric motor 203 is provided with a transmission structure. One end of the transmission structure is connected to a switch piston 7. The switch piston 7 is slidably connected to the inner wall of the third inner cavity 602. The switch piston 7 includes a first plug body 701, a second plug body 702 and a third plug body 703 connected in sequence. The outer sides of the first plug body 701, the second plug body 702 and the third plug body 703 are all slidably connected to the inner wall of the third inner cavity 602. The shape of the second plug body 702 is H-shaped. The third plug body 703 is connected to the first plug body 701, the second plug body 702 and the third plug body 703. 03 has a T-shaped cross-section; when in use, the two ends of the H-shaped second plug body 702 are distributed across the two sides of the liquid inlet, and then before the end or start of sampling, the liquid balances the pressure on both sides of the second plug body 702, so as to facilitate the control of the second plug body 702, and then after opening, the second plug body 702 moves to one side, so that the second plug body 702 moves completely to the side of the liquid inlet, and then one end of the third plug body 703 follows the second plug body 702 to move to the side of the liquid inlet, and the other end is located on the side of the connection between the third inner cavity 602 and the first connecting hole 603, so that after the liquid enters the third inner cavity 602, it enters the first connecting hole 603 to realize the sampling of the liquid.

[0044] A balancing hole is provided on one side of the third inner cavity 602 close to the sampling chamber, and the third inner cavity 602 is connected to the outside through the balancing hole; when in use, the balancing hole and the liquid inlet are both connected to the outside, achieving balance with the external pressure, so that the driving component can drive the switch piston 7 to move, so as to open and close the liquid inlet and improve its sensitivity.

[0045] The detection component 1 includes a second pressure probe 108, a temperature probe 106 and a water probe 105. The second pressure probe 108, the temperature probe 106 and the water probe 105 are all installed on the installation frame for detecting the temperature, pressure and water content in the circulation; when in use, the installation frame includes a plug 101, one end of the plug 101 is detachably connected to the second connector 103, one end of the second connector 103 is detachably connected to the water frame 104, one end of the water frame 104 is detachably connected to the pressure-temperature frame 109, and then one end of the pressure-temperature frame 109 is detachably connected to The first outer tube 1011, one end of the first outer tube 1011 is detachably connected to one end of the control component 2, a chamber is opened inside the water-containing skeleton 104, and the water-containing probe 105 is installed in the chamber of the water-containing skeleton 104, a chamber is opened inside the pressure-temperature skeleton 109, one side of the chamber of the pressure-temperature skeleton 109 is connected to the outside through the pressure inlet hole 107, and a second pressure probe 108 is installed in the chamber of the pressure-temperature skeleton 109; a rectangular hole is opened on one side of the pressure-temperature skeleton 109, the temperature probe 106 is installed on one side of the pressure-temperature skeleton 109, and the detection part is located in the rectangular hole.

[0046] The control structure includes a third connector that is detachably connected to one end of the sampling chamber, and a second sample transfer valve 302 is connected to the third connector; the control structure also includes a storage component 4 for storing a gas medium, which is nitrogen; the storage component 4 includes a nitrogen chamber 402, which is detachably connected to one end of the third connector, and an air inlet connector 403 is detachably connected to one end of the nitrogen chamber 402, and a controllable air inlet is provided at one end of the air inlet connector 403, and the air inlet is connected to the nitrogen chamber 402; a fifth connecting hole is provided inside the third connector to connect the two ends, one end of the fifth connecting hole is connected to the sampling chamber, and the other end of the fifth connecting hole is connected to the nitrogen chamber 402, and a second inner cavity is formed by one side of the floating valve 306 in the sampling chamber, the fifth connecting hole and the nitrogen chamber 402; a second control valve 301 is provided on one side of the fifth connecting hole for opening and closing the fifth connecting hole.

[0047] When in use, the leftmost end is the plug 101, one end of the plug 101 is detachably connected to the second connector 103, one end of the second connector 103 is detachably connected to the water-containing skeleton 104, and one end of the water-containing skeleton 104 is detachably connected to the pressure-temperature skeleton 109; one end of the plug 101 is connected to the single-core plug 102, one side of the water-containing skeleton 104 is installed with a water probe 105, the temperature probe 106 and the second pressure probe 108 are respectively installed on the pressure-temperature skeleton 109, and the pressure-temperature skeleton 109 is also provided with a pressure inlet hole 107 for connecting with the outside to detect fluid pressure. After the device is lowered into the well, it determines whether the sampling position is reached through the detected data, and then accurately samples.

[0048] Then one end of the pressure-temperature skeleton 109 is detachably connected to the first outer tube 1011, one end of the first outer tube 1011 is detachably connected to the second outer tube 202, and one end of the second outer tube 202 is detachably connected to the travel frame 206; wherein, a circuit skeleton 1010 is provided inside the chamber formed by the first outer tube 1011, the second outer tube 202 and the travel frame 206, and a four-core slip ring 201 is provided on one side of the circuit skeleton 1010 for transmitting electrical energy, signals or images in the device, and a motor 203 is provided on one side of the four-core slip ring 201, and the output end of the motor 203 is connected to the coupling 204, one end of the coupling 204 is connected to the rolling resistance screw 205, one end of the rolling resistance screw 205 is connected to the transmission shaft 207, and one end of the transmission shaft 207 is connected to one end of the switch piston 7 for driving the switch piston 7 to reciprocate.

[0049] Then one end of the travel frame 206 is detachably connected to the switch body 208, and one end of the switch body 208 is detachably connected to the first connector 5. A single-core slip ring 209 is also provided at the switch body 208 and the first connector 5 for transmitting signals, and one end of the first connector 5 is detachably connected to the sampling chamber; wherein, a liquid inlet is provided on the switch body 208, the third inner cavity 602 is provided inside the switch body 208, the first connecting hole 603 is located on the switch body 208, the second connecting hole 604, the third connecting hole 601 and the fourth connecting hole are on the first connector 5, the first control valve 503 and the first sample transfer valve 504 are both located on the first connector 5, and the first pressure probe 304 is provided on the first connector 5.

[0050] Then, one end of the first connector 5 is detachably connected to the sampling chamber, one end of the sampling chamber is detachably connected to the first connector 305, one end of the first connector 305 is detachably connected to the second connector 401, one end of the second connector 401 is detachably connected to the nitrogen chamber 402, and one end of the nitrogen chamber 402 is connected to the air inlet connector 403; wherein a floating valve 306 is provided in the sampling chamber, a first one-way valve 303 is provided on the side of the first connector 305 close to the sampling chamber, and a first one-way valve 303 is also provided on the first connector. There is also a second sample transfer valve 302 on 305, and a fifth connecting hole is opened in the third connecting head. The fifth connecting hole spans the first connector 305 and the second connector 401, and is used to connect the sampling chamber and the nitrogen chamber 402. The part of the fifth connecting hole located at the first connector 305 is provided with a second control valve 301, and the part of the fifth connecting hole located at the second connector 401 is also provided with a third control valve 405. A second one-way valve 406 is provided on the side of the air inlet connector 403 close to the nitrogen chamber 402, and a nitrogen plug 404 is provided at the air inlet on one side.

[0051] Before sampling, the first control valve 503, the second control valve 301 and the third control valve 405 are all in the open state, then the float valve 306 is in the open state, and then appropriate nitrogen is filled into the nitrogen tank 402 through the air inlet on the side of the air inlet connector 403. The nitrogen enters the nitrogen tank 402 after passing through the second one-way valve 406, and then enters the sampling tank through the fifth connecting hole, pushing the float valve 306 to move to the left; then the switch piston 7 is controlled to move to the appropriate position, the liquid inlet is closed, and then the gas inside the first channel 6 is emptied by the vacuum pump.

[0052] During sampling, the liquid inlet is opened, allowing the liquid to enter the sampling chamber through the switch body 208 and the first connector 5, and pushing the floating valve 306 to move to the right. Then, as the floating valve 306 moves, the internal pressure reaches equilibrium, and then the first control valve 503 is closed to achieve the purpose of sampling.

[0053] When sampling, the first control valve 503, the second control valve 301 and the third control valve 405 are closed respectively, and then the sampling chamber and the first connector 5 are disassembled as a whole, and then the sample is completely or partially taken out through the cooperation of the second sample transfer valve 302 and the first sample transfer valve 504 or the first control valve 503.

Claims

1. A high-pressure physical property sampler device, comprising a detection component (1), a control component (2), and a sampling mechanism (3) having a chamber, which are detachably connected in sequence; the control component (2) comprises a liquid inlet communicating with the sampling mechanism (3) and a drive mechanism, the drive mechanism being used to open and close a passage communicating between the liquid inlet and the sampling mechanism (3); and characterized in that: The sampling mechanism (3) comprises a sampling chamber installed at one end of the control assembly (2); the interior of the sampling chamber is connected to the liquid inlet via a first channel (6); a first control valve (503) and a first sample transfer valve (504) are respectively provided on the first channel (6); the first control valve (503) is used to open and close the first channel (6); and the first sample transfer valve (504) is used to transfer the sample in the sampling chamber out; The inner wall of the sampling chamber is slidably connected to a floating valve (306), and the floating valve (306) divides the interior of the sampling chamber into a first inner cavity and a second inner cavity. The first inner cavity is connected to the first channel (6) and is used to store samples, and the second inner cavity is used to store gaseous media. The second inner cavity is in communication with the outside, and a control structure is provided on the channel connecting the second inner cavity and the outside for regulating the pressure of the gas medium in the second inner cavity; During sampling, liquid flows into the first inner cavity to push the floating valve (306) to reduce the size of the second inner cavity, so that the pressure increase of the gas medium in the second inner cavity is balanced with the pressure generated by the sample in the first inner cavity.

2. The high-pressure physical property sampler device according to claim 1, characterized in that: The control component (2) is provided with a third inner cavity (602) and a first connecting hole (603), and the third inner cavity (602) is communicated with the liquid inlet and the first connecting hole (603) respectively; One end of the control component (2) is detachably connected to a first connector (5) of a single channel, one end of the first connector (5) is detachably connected to the sampling chamber, a second connecting hole (604) communicating with both ends is provided in the first connector (5), one end of the second connecting hole (604) is communicated with the first connecting hole (603), and the other end of the second connecting hole (604) is communicated with the first inner cavity, and the first connecting hole (603), the third inner cavity (602) and the second connecting hole (604) form a first channel (6); The first control valve (503) and the first sample transfer valve (504) are both installed at the second connecting hole (604).

3. The high-pressure physical property sampler device according to claim 2, characterized in that: One end of the control component (2) is detachably connected to a first multi-channel connector (5); The first connector (5) comprises a first connecting end (501), one end of the first connecting end (501) is detachably connected to the control component (2), the other end of the first connecting end (501) is connected to a plurality of second connecting ends (502), and the ends of the plurality of second connecting ends (502) away from the first connecting end (501) are respectively connected to a plurality of sampling chambers; A second connecting hole (604) is provided inside the first connecting end (501), and one end of the second connecting hole (604) is communicated with the first connecting hole (603); a third connecting hole (601) is provided inside the second connecting end (502), and one end of the third connecting hole (601) is communicated with the first inner cavity, and the other end of the third connecting hole (601) is communicated with the second connecting hole (604); the first connecting hole (603), the second connecting hole (604), the third connecting hole (601) and the third inner cavity (602) form a first channel (6); A set of the first control valve (503) and the first sample transfer valve (504) is installed at each of the third connecting holes (601).

4. The high-pressure physical property sampler device according to claim 2, characterized in that: A first pressure probe (304) is provided on one side of the first connector (5) connected to the sampling chamber. The first pressure probe (304) is located in the first inner cavity and is used to detect the sample pressure in the first inner cavity.

5. The high-pressure physical property sampler device according to claim 1, characterized in that: The driving mechanism comprises an electric motor (203), an output end of the electric motor (203) is provided with a transmission structure, one end of the transmission structure is connected to a switch piston (7), and the switch piston (7) is slidably connected to the inner wall of the third inner cavity (602).

6. The high-pressure physical property sampler device according to claim 5, characterized in that: The switch piston (7) comprises a first plug body (701), a second plug body (702) and a third plug body (703) connected in sequence, wherein the outer sides of the first plug body (701), the second plug body (702) and the third plug body (703) are all slidably connected to the inner wall of the third inner cavity (602); The shape of the second plug body (702) is H-shaped; the cross-sectional shape of the third plug body (703) is T-shaped.

7. The high-pressure physical property sampler device according to claim 1, characterized in that: The detection assembly (1) comprises a second pressure probe (108), a temperature probe (106) and a water content probe (105); the second pressure probe (108), the temperature probe (106) and the water content probe (105) are all mounted on a mounting frame and are used to detect the temperature, pressure and water content in circulation.

8. The high-pressure physical property sampler device according to claim 1, characterized in that: The control structure comprises a third connector detachably connected to one end of the sampling chamber, and the third connector is connected to a second sample transfer valve (302).

9. The high-pressure physical property sampler device according to claim 8, characterized in that: The control structure further includes a storage component (4) for storing a gaseous medium, wherein the gaseous medium is nitrogen; The storage assembly (4) includes a nitrogen tank (402), the nitrogen tank (402) is detachably connected to one end of a third connector, one end of the nitrogen tank (402) is detachably connected to an air inlet connector (403), one end of the air inlet connector (403) is provided with a controllable air inlet, and the air inlet is communicated with the nitrogen tank (402); A fifth connecting hole is provided inside the third connector, communicating with both ends. One end of the fifth connecting hole is communicated with the sampling chamber, and the other end of the fifth connecting hole is communicated with the nitrogen chamber (402). One side of the floating valve (306) in the sampling chamber, the fifth connecting hole, and the nitrogen chamber (402) form a second inner cavity. A second control valve (301) is provided on one side of the fifth connecting hole for opening and closing the fifth connecting hole.

10. The high-pressure physical property sampler device according to claim 1, characterized in that: A magnet (307) is provided on the floating valve (306), and the position of the floating valve (306) in the sampling chamber is detected by the magnet (307).

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