CN217738529U - Coal bed gas pressure measuring device - Google Patents
Coal bed gas pressure measuring device Download PDFInfo
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- CN217738529U CN217738529U CN202221559630.9U CN202221559630U CN217738529U CN 217738529 U CN217738529 U CN 217738529U CN 202221559630 U CN202221559630 U CN 202221559630U CN 217738529 U CN217738529 U CN 217738529U
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Abstract
The utility model relates to the technical field of coal bed gas pressure, in particular to a coal bed gas pressure measuring device, which comprises a sieve tube, a pressure measuring tube, a bag hole packer, a first three-way valve, a second three-way valve, a third three-way valve, a gas production tube, a hydrogen sulfide gas detection tank, a solution discharge valve, a first pressure measuring meter and a second pressure measuring meter; the sieve tube is positioned at the foremost end of the pressure measuring tube, and a first three-way valve, a second three-way valve and a third three-way valve are sequentially connected to the outside of the pressure measuring tube from left to right to control the gas trend; the utility model discloses possess following advantage: the utility model adopts the mode of sealing the holes by the bag, and the expandable hole sealing material is injected into the grouting pipe for hole sealing, so that the hole sealing effect is good, the operation is simple, and the underground construction is convenient; the utility model discloses a tee bend valve is controlled and can be realized adopting gas, hydrogen sulfide gas body and detect, the multiple operation of pressure measurement, has improved coal seam gas pressure measurement's accuracy.
Description
Technical Field
The utility model relates to a coal seam gas pressure technical field, concretely relates to coal seam gas pressure survey device.
Background
The coal bed gas pressure is one of the basic parameters of the mine gas, and has very important significance for determining the coal bed gas content, preventing and controlling the mine gas emission, facilitating the gas drainage, controlling the coal and gas outburst and the like. However, the pressure measuring instrument for the coal bed gas pressure is corroded by acidic gases such as hydrogen sulfide and the like for a long time, so that the accuracy of the coal bed gas pressure is seriously influenced, the integral implementation effect of a gas treatment scheme is further influenced, and potential threats are brought to the safety production of mines.
At present, research on the measurement accuracy of the coal bed gas pressure mainly focuses on the research on hole sealing modes and hole sealing materials, and the research on the corrosion of gases such as hydrogen sulfide and the like on a pressure measuring meter in the pressure measuring process is less. Therefore, the utility model provides a can gather gas sample analysis gas composition and detect hydrogen sulfide gas body and avoid the manometer to receive the gas corrosion influence to cause one-used one of pressure measurement error and be equipped with (manometer) device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art not enough, provide a coal seam gas pressure survey device, the device can detect whether contain hydrogen sulfide gas body in the gas to gather the sample to the gas in the piezometer pipe, but the influence that the while reducible gas corrodes the piezometer and bring, furthest's improvement coal seam gas pressure's accuracy, thereby finally obtain real coal seam gas pressure, provide data for formulating gas disaster prevention and control scheme.
In order to realize the purpose, the utility model provides a technical scheme does:
the utility model provides a coal seam gas pressure survey device which characterized in that: the device comprises a sieve tube 1, a pressure measuring tube 5, a sac hole packer 3, a first three-way valve 6, a second three-way valve 9, a third three-way valve 10, a gas production tube 8, a hydrogen sulfide gas detection tank 7, a solution discharge valve 13, a first pressure measuring meter 11 and a second pressure measuring meter 12; the sieve tube 1 is located at the foremost end of the piezometric tube 5, and a first three-way valve 6, a second three-way valve 9 and a third three-way valve 10 are sequentially connected to the outside of the piezometric tube 5 from left to right to control the gas trend.
And a gas production pipe 8 is arranged at the lower end of the first three-way valve 6, and the right end of the first three-way valve 6 is connected with a second three-way valve 9.
The hydrogen sulfide gas detection tank 7 is installed at the lower end of the second three-way valve 9, an excessive zinc acetate solution is installed inside the hydrogen sulfide gas detection tank 7, the solution discharge valve 13 is installed at the lower end of the hydrogen sulfide gas detection tank 7, and the right end of the second three-way valve 9 is connected with the third three-way valve 10.
And a first pressure gauge 11 and a second pressure gauge 12 are respectively arranged at the right end and the lower end of the third three-way valve 10.
The screen 1 is inserted into a coal seam 2.
The front end of the pressure measuring pipe 5 is wound with the bag hole packer 3, and the front end of the pressure measuring pipe 5 and the bag hole packer 3 which are wound together are inserted into the rock wall 4.
Compared with the prior art, the utility model discloses possess following advantage:
1. the utility model discloses a mode slip casting hole sealing of bag hole sealing pours into the intussuseption with expansibility hole sealing material and carries out the hole sealing, and the hole sealing is effectual, easy operation, the construction in the pit of being convenient for.
2. The utility model discloses a tee bend valve is controlled and can be realized adopting gas, hydrogen sulfide gas body and detect, the multiple operation of pressure measurement, has improved coal seam gas pressure measurement's accuracy.
3. The utility model discloses connection structure is simple, and the staff independently installs, dismantles in the pit of being convenient for, and easy operation, function are various reasonable, do benefit to the use.
To sum up, the utility model relates to a simply rationally, the function is various, and the operation of being convenient for can reduce the error of current device pressure measurement, does benefit to the use.
Drawings
For a more clear understanding of the present invention, the present disclosure will be further described by reference to the drawings and illustrative embodiments, which are provided for illustration and are not to be construed as limiting the present disclosure.
FIG. 1 is a schematic view of the present invention;
shown in the figure are: the device comprises a sieve tube 1, a coal seam 2, a bag hole packer 3, a rock wall 4, a pressure measuring tube 5, a first three-way valve 6, a hydrogen sulfide gas detection tank 7, a gas production tube 8, a second three-way valve 9, a third three-way valve 10, a first pressure measuring meter 11, a second pressure measuring meter 12 and a solution discharge valve 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Example 1
A coal bed gas pressure measuring device is shown in figure 1 and comprises a sieve tube 1, a pressure measuring tube 5, a bag hole packer 3, a first three-way valve 6, a second three-way valve 9, a third three-way valve 10, a gas production tube 8, a hydrogen sulfide gas detection tank 7, a solution discharge valve 13, a first pressure measuring meter 11 and a second pressure measuring meter 12; the sieve tube 1 is located at the foremost end of the pressure measuring tube 5, and a first three-way valve 6, a second three-way valve 9 and a third three-way valve 10 are sequentially connected to the outside of the pressure measuring tube 5 from left to right to control the direction of gas.
The lower end of the first three-way valve 6 is provided with a gas production pipe 8, and the right end of the first three-way valve 6 is connected with a second three-way valve 9.
The lower end of the second three-way valve 9 is provided with a hydrogen sulfide gas detection tank 7, the hydrogen sulfide gas detection tank 7 is internally provided with an excessive zinc acetate solution, and the lower end of the hydrogen sulfide gas detection tank 7 is provided with a solution discharge valve 13.
The right end of the second three-way valve 9 is connected with a third three-way valve 10, and the right end and the lower end of the third three-way valve 10 are respectively provided with a first pressure gauge 11 and a second pressure gauge 12.
The screen 1 is inserted into a coal seam 2.
The front end of the pressure measuring pipe 5 is wound with the bag hole packer 3, and the front end of the pressure measuring pipe 5 and the bag hole packer 3 which are wound together are inserted into the rock wall 4.
Example 2
The use method of the coal bed gas pressure measuring device is characterized by comprising the following specific steps:
the method comprises the following steps: arranging pressure measuring drill holes according to related parameters in a coal bed which is not pre-pumped, and discharging residual coal and rock debris in a hole after completion;
step two: connecting the sieve tube 1 with a piezometric tube 5, winding the piezometric tube 5 and the bag hole packer 3 with each other, and fixedly pushing the mutually wound piezometric tube and the bag hole packer into a preset depth of a drilled hole by using a rolling belt;
step three: preparing hole sealing materials, starting grouting, and plugging a drilled hole by utilizing the expansion characteristic of the bag after grouting;
step four: after the hole sealing material is solidified stably, firstly connecting a first three-way valve 6 with the outside of a pressure measuring pipe 5, wherein the lower part of the first three-way valve 6 is connected with a gas production pipe 8, the right end of the first three-way valve 6 is connected with a second three-way valve 9, the lower part of the second three-way valve 9 is connected with a hydrogen sulfide detection tank 7, an excessive zinc acetate solution is filled in the hydrogen sulfide detection tank 7, the lower part of the hydrogen sulfide detection tank 7 is provided with a solution discharge valve 13, the right end of the second three-way valve 9 is connected with a third three-way valve 10, and the right end and the lower end of the third three-way valve 10 are respectively connected with a first pressure measuring meter 11 and a second pressure measuring meter 12;
step five: during gas production, the first three-way valve 6 is adjusted to enable gas to enter the gas production device along the gas production pipe 8 (when gas production is not needed, the gas is controlled not to flow through the gas production pipe by the valve), and after gas production is finished, the valve is adjusted to enable the gas to flow normally along the pressure measuring pipe;
when the gas flows stably, the second three-way valve 9 is opened, the third three-way valve 10 is closed to enable the gas to flow into the hydrogen sulfide detection tank 7, and the second three-way valve 9 is closed after the gas fully reacts with the zinc acetate solution;
opening third three way valve 10 and making gas not flow through hydrogen sulfide detection tank 7, flow along the manometer direction, open solution discharge valve 13 this moment, make the solution flow into receiving arrangement, whether the observation has white precipitate can verify whether contain hydrogen sulfide gas in the gas, during the pressure measurement, the manometer is used one and is equipped with, second manometer 12 is in the encapsulated situation not gaseous passing through under the normal condition, observe first manometer 11 and can acquire coal seam gas pressure data, when first manometer 11 breaks down, open second manometer 12 and monitor pressure data.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a coal seam gas pressure survey device which characterized in that: the device comprises a sieve tube (1), a pressure measuring tube (5), a sac hole packer (3), a first three-way valve (6), a second three-way valve (9), a third three-way valve (10), a gas production tube (8), a hydrogen sulfide gas detection tank (7), a solution discharge valve (13), a first pressure measuring meter (11) and a second pressure measuring meter (12); the sieve tube (1) is located at the foremost end of the pressure measuring tube (5), and a first three-way valve (6), a second three-way valve (9) and a third three-way valve (10) are sequentially connected to the outside of the pressure measuring tube (5) from left to right to control the trend of gas.
2. The coal seam gas pressure measuring device according to claim 1, wherein: and a gas production pipe (8) is arranged at the lower end of the first three-way valve (6), and the right end of the first three-way valve (6) is connected with a second three-way valve (9).
3. The coal bed gas pressure measuring device according to claim 1, characterized in that: the device is characterized in that a hydrogen sulfide gas detection tank (7) is installed at the lower end of the second three-way valve (9), an excessive zinc acetate solution is installed inside the hydrogen sulfide gas detection tank (7), a solution discharge valve (13) is installed at the lower end of the hydrogen sulfide gas detection tank (7), and the right end of the second three-way valve (9) is connected with a third three-way valve (10).
4. The coal bed gas pressure measuring device according to claim 1, characterized in that: and a first pressure gauge (11) and a second pressure gauge (12) are respectively arranged at the right end and the lower end of the third three-way valve (10).
5. The coal seam gas pressure measuring device according to claim 1, wherein: the sieve tube (1) is inserted into the coal seam (2).
6. The coal bed gas pressure measuring device according to claim 1, characterized in that: the front end of the pressure measuring pipe (5) is wound with the bag hole packer (3), and the front end of the pressure measuring pipe (5) and the bag hole packer (3) which are wound together are inserted into the rock wall (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221559630.9U CN217738529U (en) | 2022-06-21 | 2022-06-21 | Coal bed gas pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221559630.9U CN217738529U (en) | 2022-06-21 | 2022-06-21 | Coal bed gas pressure measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN217738529U true CN217738529U (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221559630.9U Active CN217738529U (en) | 2022-06-21 | 2022-06-21 | Coal bed gas pressure measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN217738529U (en) |
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2022
- 2022-06-21 CN CN202221559630.9U patent/CN217738529U/en active Active
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