CN215768103U - Novel coal bed gas pressure measurement coal sample jar - Google Patents
Novel coal bed gas pressure measurement coal sample jar Download PDFInfo
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- CN215768103U CN215768103U CN202122306930.8U CN202122306930U CN215768103U CN 215768103 U CN215768103 U CN 215768103U CN 202122306930 U CN202122306930 U CN 202122306930U CN 215768103 U CN215768103 U CN 215768103U
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- end cover
- tank body
- coal sample
- gas pressure
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- 239000003245 coal Substances 0.000 title claims abstract description 78
- 238000009530 blood pressure measurement Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000003795 desorption Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The utility model provides a novel coal bed gas pressure measurement coal sample tank, which comprises a tank body, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are connected through a sealing area; the tank body is provided with openings at two ends, a movable piston is arranged in the tank body in a sliding manner, and the tank body is divided into an upper cavity chamber and a lower cavity chamber by the movable piston; a water injection pressurizing channel and a water drainage channel which are communicated with the upper cavity are arranged in the upper end cover, and the outer circumference of the upper end cover is connected with a water inlet valve corresponding to the water injection pressurizing channel and a water drainage valve corresponding to the water drainage channel; an air inlet and exhaust channel communicated with the lower chamber is arranged in the lower end cover, and an air inlet and exhaust three-way valve corresponding to the air inlet and exhaust channel is connected to the outer circumference of the lower end cover. The coal sample tank disclosed by the utility model is exquisite in structure, free of underground use, capable of being independently stored, wide in application, convenient to use and high in measurement accuracy.
Description
Technical Field
The utility model relates to the field of gas pressure measuring instruments, in particular to a novel coal bed gas pressure measuring coal sample tank.
Background
In the original coal body, the coal bed is in a dynamic balance state, the gas pressure of the coal sample is equal to the gas pressure of the original coal body, when the gas pressure of the coal bed is sampled and measured, the coal sample is taken by drilling a drill hole, the dynamic balance of free gas and adsorbed gas of the coal bed is firstly broken, in the process of filling the coal sample into a coal sample tank, the coal sample is exposed in the atmosphere, and a part of the coal sample is desorbed (the gas loss amount); loading the coal sample into a coal sample tank, and desorbing the gas originally adsorbed in the coal until the gas pressure in the coal sample is equal to the atmospheric pressure of a measurement place to achieve new dynamic balance so as to obtain the gas desorption amount; and (4) measuring the residual gas content of the coal sample tank filled with the coal sample in an experiment, thereby obtaining the gas pressure of the coal bed.
The existing connection mode of the coal sample tank and the desorption instrument is mostly a pinhole type, the coal sample tank and the desorption instrument are connected through a puncture needle, and the puncture needle is easily blocked by a sealing rubber pad in the using process, so that desorbed gas cannot be correctly measured, and the gas pressure of a coal seam cannot be accurately measured; in addition, the coal sample tank directly measures the desorption amount of the coal sample through a drainage method underground, and due to the fact that underground conditions are severe, time errors and visual errors, testers cannot accurately read out the drainage amount, and therefore the gas loss amount of the coal sample cannot be accurately measured.
Disclosure of Invention
In view of the above, the utility model provides a novel coal bed gas pressure measurement coal sample tank which is exquisite in structure, free of underground use, capable of being stored independently, wide in application, convenient to use and high in measurement accuracy.
In order to solve the technical problem, the utility model provides a novel coal bed gas pressure measurement coal sample tank which comprises a tank body, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are connected through a sealing area;
the tank body is provided with openings at two ends, a movable piston is arranged in the tank body in a sliding manner, and the tank body is divided into an upper cavity chamber and a lower cavity chamber by the movable piston;
a water injection pressurizing channel and a water drainage channel which are communicated with the upper cavity are arranged in the upper end cover, and the outer circumference of the upper end cover is connected with a water inlet valve corresponding to the water injection pressurizing channel and a water drainage valve corresponding to the water drainage channel;
an air inlet and exhaust channel communicated with the lower chamber is arranged in the lower end cover, and an air inlet and exhaust three-way valve corresponding to the air inlet and exhaust channel is connected to the outer circumference of the lower end cover.
Furthermore, the sealing area is an internal thread area arranged in the openings at the two ends of the tank body; the outer circumferences of the connecting ends of the upper end cover and the lower end cover are provided with external thread areas; the upper end cover and the lower end cover are connected with the tank body in a sealing way through a threaded gear.
Furthermore, sealing rings are arranged at the joints of the upper end cover, the lower end cover and the tank body; the sealing ring is made of rubber.
Furthermore, two sealing rings are arranged between the upper end and the lower end of the movable piston and the inner wall of the tank body; the sealing ring is made of rubber.
Furthermore, the water inlet valve and the water discharge valve are in threaded connection with the upper end cover;
the water inlet valve is provided with a water inlet valve rod and a water inlet end communicated with the water inlet pipe;
and the drain valve is provided with a drain valve rod and a drain end communicated with the drain pipe.
Furthermore, an air inlet valve rod, an air outlet valve rod, an air inlet end communicated with the air inlet pipe and an air outlet end communicated with the air outlet pipe are respectively arranged on the air inlet and air outlet three-way valve.
Furthermore, the upper end cover, the lower end cover and the movable piston are of hollow structures.
Further, the tank body, the upper end cover and the lower end cover are made of high-pressure resistant metal steel.
The technical scheme of the utility model at least comprises the following technical effects:
1. the coal sample tank is exquisite in structure, free of underground use, capable of being stored independently, wide in application range, convenient and fast to use and high in measuring accuracy;
2. the connection mode of the coal sample tank body and the upper and lower end covers can conveniently realize the fixed connection of the upper end cover, the lower end cover and the tank body, and has good sealing performance;
3. the sealing performance of the coal sample tank can be further improved by the sealing rings between the upper end cover and the tank body and between the lower end cover and the tank body; the sealing ring structure can form a good sealing structure between the movable piston and the inner wall of the tank body, so that the detection precision of the coal sample tank in the using process is improved;
4. the upper end cover, the lower end cover and the movable piston are of hollow structures, so that the overall weight of the coal sample tank can be reduced, and the sampling requirement of multiple sampling points can be met.
Drawings
FIG. 1 is an axial sectional view of a coal sample tank according to an embodiment of the present invention.
In the figure:
100. a coal sample tank; 1. a tank body; 2. a lower chamber; 3. a sealing zone; 4. a seal ring; 5. a lower end cover; 6. an intake and exhaust passage; 7. an air inlet valve stem; 8. an exhaust valve stem; 9. an intake and exhaust three-way valve; 10. an exhaust end; 12. an air inlet end; 13. moving the piston; 15. an upper chamber; 16. a water inlet end; 17. a water inlet valve; 18. a water inlet valve stem; 19. a water injection pressurizing channel; 20. an upper end cover; 21. a drainage channel; 22. a drain valve stem; 23. a drain valve; 24. a water drainage end head.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model, are within the scope of the utility model.
As shown in fig. 1: a novel coal bed gas pressure measurement coal sample tank 100 comprises a tank body 1, an upper end cover 20 and a lower end cover 5, wherein the upper end cover and the lower end cover are connected through a sealing area 3; the tank body 1 is provided with openings at two ends, the movable piston 13 is arranged in the tank body 1 in a sliding manner, and the tank body 1 is divided into an upper chamber 15 and a lower chamber 2 by the movable piston 13; a water injection pressurizing channel 19 and a water drainage channel 21 which are communicated with the upper chamber are arranged in the upper end cover 20, and the outer circumference of the upper end cover 20 is connected with a water inlet valve 17 corresponding to the water injection pressurizing channel and a water drainage valve 23 corresponding to the water drainage channel; an air inlet and exhaust channel 6 communicated with the lower chamber is arranged in the lower end cover 5, and an air inlet and exhaust three-way valve 9 corresponding to the air inlet and exhaust channel is connected to the outer circumference of the lower end cover.
Particularly, the coal sample tank is exquisite in structure, free of underground use, capable of being stored independently, wide in application range, convenient to use and high in measuring accuracy.
In an embodiment of the present invention, the sealing area 3 is an internal thread area provided in the opening at both ends of the can body 1; the outer circumference of the connecting end of the upper end cover 20 and the lower end cover 5 is provided with an external thread area; the upper end cover and the lower end cover are connected with the tank body in a sealing way through a threaded gear. In this embodiment, this kind of jar body and upper and lower end cover connected mode that sets up, the fixed connection of realization upper end cover, lower end cover and jar body that can be convenient, and have good sealing performance.
In another embodiment of the utility model, the joints of the upper end cover 20, the lower end cover 5 and the tank body 1 are provided with sealing rings 4; the sealing ring 4 is made of rubber; in this embodiment, the sealing performance of the coal sample tank can be further improved through the sealing rings between the upper end cover, the lower end cover and the tank body.
In another embodiment of the utility model, two sealing rings 4 are arranged between the upper end and the lower end of the movable piston 13 and the inner wall of the tank body 1; the sealing ring 4 is made of rubber. In this embodiment, can make through the sealing washer structure and form good seal structure between removal piston and the internal wall of jar, improve the detection precision of coal sample jar in the use.
In another embodiment of the present invention, the water inlet valve 17 and the water outlet valve 23 are in threaded connection with the upper end cap 20; the water inlet valve 17 is provided with a water inlet valve rod 18 and a water inlet end 16 communicated with a water inlet pipe; the drain valve 23 is provided with a drain valve rod 22 and a drain end 24 communicated with a drain pipe. In the embodiment, water injection pressurization or drainage pressure relief in the upper cavity can be conveniently realized through the water inlet valve and the water discharge valve.
In another embodiment of the present invention, the intake and exhaust three-way valve 9 is provided with an intake valve rod 7, an exhaust valve rod 8, an intake end 12 communicated with an intake pipe, and an exhaust end 10 communicated with an exhaust pipe. In this embodiment, the gas loss amount can be supplemented to the coal sample tank or the exhaust operation can be performed by the intake/exhaust three-way valve.
In another embodiment of the present invention, the upper end cap 20, the lower end cap 5 and the moving piston 13 are hollow structures. In this embodiment, upper end cover, lower extreme cover and removal piston adopt hollow structure, can alleviate the whole weight of coal sample jar to satisfy many appearance points sampling demand.
In another embodiment of the present invention, the can body 1, the upper end cap 20 and the lower end cap 5 are made of high pressure resistant metal steel. In this embodiment, the coal sample jar intensity of this kind of structure is high, can satisfy the survey requirement to coal seam gas pressure.
The use method or the working principle of the utility model are as follows:
according to the coal sample tank, the lower end cover of the coal sample tank is dismounted, a coal sample is quickly loaded into the lower cavity of the coal sample tank, the lower end cover is screwed, and the screwing state of the air inlet valve rod and the air exhaust valve rod is kept, so that the coal sample tank is ensured to be in a sealed state and is not communicated with the outside; and after the preparation work of the equipment to be detected is finished, communicating the coal sample tank with a detection instrument, opening a water inlet valve, injecting water into the upper chamber of the coal sample tank through a constant-pressure constant-speed pressure pump for pressurization, opening an air inlet valve rod to supplement the predicted gas loss amount in the sampling process to the coal sample in the lower chamber of the coal sample tank, and performing gas pressure detection.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the utility model, and such modifications and enhancements are also considered to be within the scope of the utility model.
Claims (8)
1. The utility model provides a novel coal seam gas pressure survey coal sample jar which characterized in that: comprises a tank body (1), an upper end cover (20) and a lower end cover (5), wherein the upper end and the lower end of the tank body are connected through a sealing area (3);
the tank body (1) is provided with openings at two ends, the tank body (1) is internally provided with a movable piston (13) in a sliding way, and the tank body (1) is divided into an upper chamber (15) and a lower chamber (2) by the movable piston (13);
a water injection pressurizing channel (19) and a water drainage channel (21) which are communicated with the upper chamber are arranged in the upper end cover (20), and the outer circumference of the upper end cover (20) is connected with a water inlet valve (17) corresponding to the water injection pressurizing channel and a water drainage valve (23) corresponding to the water drainage channel;
and an air inlet and exhaust channel (6) communicated with the lower cavity is arranged in the lower end cover (5), and the outer circumference of the lower end cover is connected with an air inlet and exhaust three-way valve (9) corresponding to the air inlet and exhaust channel.
2. The novel coal seam gas pressure measurement coal sample tank of claim 1, wherein: the sealing area (3) is an internal thread area arranged in openings at two ends of the tank body (1); the outer circumferences of the connecting ends of the upper end cover (20) and the lower end cover (5) are provided with external thread areas; the upper end cover and the lower end cover are connected with the tank body in a sealing way through a threaded gear.
3. The novel coal seam gas pressure measurement coal sample tank of claim 2, wherein: sealing rings (4) are arranged at the joints of the upper end cover (20), the lower end cover (5) and the tank body (1); the sealing ring (4) is made of rubber.
4. The novel coal seam gas pressure measurement coal sample tank of claim 1, wherein: two sealing rings (4) are arranged between the upper end and the lower end of the movable piston (13) and the inner wall of the tank body (1); the sealing ring (4) is made of rubber.
5. The novel coal seam gas pressure measurement coal sample tank of claim 1, wherein: the water inlet valve (17) and the drain valve (23) are in threaded connection with the upper end cover (20);
the water inlet valve (17) is provided with a water inlet valve rod (18) and a water inlet end head (16) communicated with the water inlet pipe;
and the drain valve (23) is provided with a drain valve rod (22) and a drain end head (24) communicated with the drain pipe.
6. The novel coal seam gas pressure measurement coal sample tank of claim 1, wherein: and the air inlet and exhaust three-way valve (9) is respectively provided with an air inlet valve rod (7), an exhaust valve rod (8), an air inlet end (12) communicated with an air inlet pipe and an exhaust end (10) communicated with an exhaust pipe.
7. The novel coal seam gas pressure measurement coal sample tank of claim 1, wherein: the upper end cover (20), the lower end cover (5) and the movable piston (13) are of hollow structures.
8. The novel coal seam gas pressure measurement coal sample tank as claimed in any one of claims 1-7, wherein: the tank body (1), the upper end cover (20) and the lower end cover (5) are made of high-pressure resistant metal steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306930.8U CN215768103U (en) | 2021-09-23 | 2021-09-23 | Novel coal bed gas pressure measurement coal sample jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306930.8U CN215768103U (en) | 2021-09-23 | 2021-09-23 | Novel coal bed gas pressure measurement coal sample jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215768103U true CN215768103U (en) | 2022-02-08 |
Family
ID=80090260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122306930.8U Active CN215768103U (en) | 2021-09-23 | 2021-09-23 | Novel coal bed gas pressure measurement coal sample jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215768103U (en) |
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2021
- 2021-09-23 CN CN202122306930.8U patent/CN215768103U/en active Active
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