CN118010434A - Negative pressure sampling device for collecting gas samples in coal mine goaf - Google Patents
Negative pressure sampling device for collecting gas samples in coal mine goaf Download PDFInfo
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- CN118010434A CN118010434A CN202410423818.8A CN202410423818A CN118010434A CN 118010434 A CN118010434 A CN 118010434A CN 202410423818 A CN202410423818 A CN 202410423818A CN 118010434 A CN118010434 A CN 118010434A
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- 238000005070 sampling Methods 0.000 title claims abstract description 72
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 31
- 229920000742 Cotton Polymers 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The invention discloses a negative pressure sampling device for collecting gas samples in a coal mine goaf, which comprises the following components: a negative pressure sampling pump; one end of the beam tube is fixedly communicated with the air inlet end of the negative pressure sampling pump; the beam pipe joint is detachably connected to the other end of the beam pipe, the beam pipe joint stretches into the goaf, and a voltage-controlled switch is arranged in the beam pipe joint; the bladder air bag is detachably connected to the negative pressure sampling pump; the pipe binding sleeve is sleeved with a protective sleeve, the pipe binding sleeve joint is arranged in the protective sleeve, and a dustproof assembly is arranged at the inlet of the pipe binding sleeve joint. According to the invention, the pressure-controlled switch is arranged under the condition that no external force acts, so that the exchange of gas in the goaf and the beam tube is actively isolated, the change of the gas concentration in the goaf caused by the influence of the beam tube is avoided, the pressure-controlled switch is turned on after the air in the beam tube is discharged, the influence of the air on the concentration of the collected gas sample is avoided, and the accuracy of the collected gas concentration data is improved.
Description
Technical Field
The invention relates to the technical field of coal mine goaf gas sample collection, in particular to a negative pressure sampling device for coal mine goaf gas sample collection.
Background
Natural ignition in the goaf of the coal mine directly threatens the safety production of the coal mine and even causes gas explosion disasters. At present, a beam tube monitoring system or a manual sampling analysis system is generally adopted to test and analyze goaf gas, and no matter which test mode is adopted, the beam tube is required to be pre-buried after a working face enters an air return roadway or a working face frame.
The Chinese patent with publication number CN112013190A discloses a coal mine goaf gas sampling anti-blocking device, and solves the problems that a bundle pipe is crushed and the sleeve is blocked in the conventional manner of laying the bundle pipe by utilizing a pressure dividing sleeve with a cone structure. The Chinese patent with publication number CN209416791U discloses a goaf deep gas sampling device, mainly utilizes a plurality of gas collectors arranged on the goaf side of a gob-side entry retaining way, and provides a goaf deep gas sampling system with simple structure and low cost through connection with a beam tube. It is worth considering that when the sampling pump is used for pumping gas in field actual measurement, a certain amount of gas exists in the beam tube, and the bladder air bag needs to be connected for sampling after a period of time according to the length of the beam tube. The sampling step is complex, and has large human error, and even the acquired gas sample concentration is inaccurate.
For the above reasons, the present invention provides a negative pressure sampling device with an active sealing bundle pipe joint.
Disclosure of Invention
The invention aims to provide a negative pressure sampling device for collecting gas samples in a coal mine goaf so as to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a negative pressure sampling device for collecting gas samples in a coal mine goaf, which comprises the following components:
A negative pressure sampling pump;
One end of the beam tube is fixedly communicated with the air inlet end of the negative pressure sampling pump;
the beam pipe joint is detachably connected to the other end of the beam pipe, the beam pipe joint stretches into the goaf, and a voltage-controlled switch is arranged in the beam pipe joint;
the bladder air bag is detachably connected to the negative pressure sampling pump;
the pipe binding device comprises a pipe binding device, a pipe binding device and a pipe binding device, wherein the pipe binding device is sleeved with a protective sleeve, the pipe binding device is arranged in the protective sleeve, and a dustproof assembly is arranged at the inlet of the pipe binding device.
According to the negative pressure sampling device for collecting the gas samples in the goaf of the coal mine, the pressure-controlled switch comprises the sealing piece, the top end of the sealing piece is connected in the pipe joint through the fixing anchor, the rotating force is correspondingly arranged in the inner cavity of the pipe joint, the inner bottom of the pipe joint is provided with the arc-shaped groove, the circle corresponding to the circle of the arc-shaped groove is positioned on the fixing anchor, the bottom surface of the sealing piece is in sliding fit with the arc-shaped groove, one side, close to the air inlet end of the pipe joint, of the arc-shaped groove is fixedly connected with the stop block, the stop block is in limiting fit with the sealing piece, and one side, close to the air inlet end of the pipe joint, of the sealing piece is provided with the tension component.
According to the negative pressure sampling device for collecting gas samples in the goaf of the coal mine, the tension assembly comprises the tension spring, the tension spring is fixedly connected to the middle position of one side, close to the gas inlet of the pipe joint, of the sealing piece, one end of the tension spring is fixedly connected with the top of the inner wall of the pipe joint through the fixing anchor, and the tension spring, the sealing piece and the inner wall of the pipe joint are arranged in a triangular structure.
According to the negative pressure sampling device for collecting gas samples in the goaf of the coal mine, the dustproof assembly comprises the mesh plates which are arranged in parallel, the mesh plates are fixedly connected to the air inlet end of the beam pipe joint, the mesh plates are arranged corresponding to the inner cavities of the beam pipe joint, and dustproof cotton is arranged between the two mesh plates.
According to the negative pressure sampling device for collecting gas samples in the goaf of the coal mine, provided by the invention, the inner wall of the gas outlet end of the beam tube connector is symmetrically and fixedly connected with the pressing sheet, and the beam tube is fixedly connected with the gas outlet end of the beam tube connector through the pressing sheet.
According to the negative pressure sampling device for collecting gas samples in the goaf of the coal mine, the material of the beam pipe joint comprises aluminum alloy, the cross section of the beam pipe joint is rectangular, an annular channel is arranged in the middle of the beam pipe joint, the outer contour size of the cross section of the beam pipe joint is 14mm multiplied by 14mm, and the diameter of the inner contour is 10mm.
According to the negative pressure sampling device for collecting the gas samples in the goaf of the coal mine, the negative pressure sampling pump is provided with the air inlet, the air outlet and the gas sample outlet are communicated with the air inlet, the air outlet, the gas sample outlet and the air inlet are respectively provided with the sealing component, the air inlet is fixedly communicated with one end of the beam tube, and the bladder air bag is fixedly connected to the gas sample outlet.
According to the negative pressure sampling device for collecting the air samples in the goaf of the coal mine, the sealing assembly comprises the air valve and the air sample valve, the air valve is arranged between the air outlet and the air inlet, the air sample valve is arranged between the air sample outlet and the air inlet, the air outlet and the air sample outlet are respectively provided with a control coil, the negative pressure sampling pump is provided with an electromagnetic control unit, and the electromagnetic control unit is electrically connected with the control coils.
The invention discloses the following technical effects:
when the device works, the beam tube connector, the beam tube, the negative pressure sampling pump and the bladder air bag are connected in sequence, then the beam tube connector is placed in the goaf, the pressure-controlled switch is closed, air in the beam tube is pumped and discharged through the negative pressure sampling pump, so that a negative pressure space is formed in the beam tube, then the pressure-controlled switch is opened under the action of air pressure, the beam tube connector is communicated with the beam tube, and air in the goaf enters the bladder air bag through the beam tube connector and the beam tube, so that air collection is realized.
According to the invention, the pressure-controlled switch is arranged under the condition that no external force acts, so that the exchange of gas in the goaf and the beam tube is actively isolated, the change of the gas concentration in the goaf caused by the influence of the beam tube is avoided, the pressure-controlled switch is turned on after the air in the beam tube is discharged, the influence of the air on the concentration of the collected gas sample is avoided, and the accuracy of the collected gas concentration data is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a negative pressure sampling device according to the present invention;
fig. 2 is a schematic diagram of the structure of the voltage-controlled switch (off state) of the present invention;
fig. 3 is a schematic diagram of the structure of the voltage-controlled switch (open state) of the present invention;
FIG. 4 is a schematic diagram of the negative pressure sampling pump (air valve open) of the present invention;
FIG. 5 is a schematic diagram of the negative pressure sampling pump (with the gas sample valve open) of the present invention;
fig. 6 is a pressure variation curve of the negative pressure sampling pump of the present invention.
1, A beam pipe joint; 2. a bundle tube; 3. a protective sleeve; 4. a negative pressure sampling pump; 5. a bladder air bag; 101. a mesh plate; 102. dust-proof cotton; 103. a sealing sheet; 104. a tension spring; 105. fixing anchors; 106. tabletting; 401. an air inlet; 402. an electromagnetic control unit; 403. a coil; 404. an air valve; 405. a gas sample valve; 406. an air outlet; 407. and a gas sample outlet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
Referring to fig. 1-6, the invention provides a negative pressure sampling device for collecting gas samples in a goaf of a coal mine, which comprises:
A negative pressure sampling pump 4;
the beam tube 2, one end of the beam tube 2 is fixedly communicated with the air inlet end of the negative pressure sampling pump 4;
The beam pipe joint 1 is detachably connected to the other end of the beam pipe 2, the beam pipe joint 1 stretches into a goaf, and a voltage-controlled switch is arranged in the beam pipe joint 1;
The bladder air bag 5 is detachably connected to the negative pressure sampling pump 4;
The bladder air bag 5 is detachable relative to the negative pressure sampling pump 4, the bladder air bag 5 and the negative pressure sampling pump are temporarily fixed through parts such as a hoop, and after the bladder air bag 5 is fully collected, the bladder air bag is detached and then a new bladder air bag 5 is replaced;
Wherein, the outside cover of restraint pipe 2 is equipped with protective casing 3, and restraint coupling 1 sets up in protective casing 3, and restraint coupling 1 entrance is provided with dustproof subassembly.
When the invention works, the beam tube joint 1, the beam tube 2, the negative pressure sampling pump 4 and the bladder air bag 5 are sequentially connected, then the beam tube joint 1 is placed in a goaf, the pressure-controlled switch is closed, air in the beam tube 2 is pumped and discharged through the negative pressure sampling pump 4, so that a negative pressure space is formed in the beam tube 2, then the pressure-controlled switch is opened under the action of air pressure, the beam tube joint 1 is communicated with the beam tube 2, and air in the goaf enters the bladder air bag 5 through the beam tube joint 1 and the beam tube 2, so that air collection is realized.
According to the invention, the pressure-controlled switch is arranged under the action of no external force, so that the exchange of gas in the goaf and the beam tube 2 is actively isolated, the change of the gas concentration in the goaf caused by the influence of the beam tube 2 is avoided, the pressure-controlled switch is turned on after the air in the beam tube 2 is discharged, the influence of the air on the concentration of the collected gas sample is avoided, and the accuracy of the collected gas concentration data is improved.
Further optimizing scheme, pressure-controlled switch includes sealing washer 103, and sealing washer 103 top passes through tie-down anchor 105, and the turning force is connected in tie-down pipe joint 1, and corresponds the setting with tie-down pipe joint 1 inner chamber, has seted up the arc wall in the tie-down pipe joint 1, and the circular of the circle that the arc wall corresponds is located tie-down anchor 105, sliding fit between sealing washer 103 bottom surface and the arc wall, and one side fixedly connected with dog that the arc wall is close to the inlet end of tie-down pipe 2, the dog is spacing with sealing washer 103 cooperation, and sealing washer 103 is provided with the pulling force subassembly near the inlet end one side of tie-down pipe joint 1.
Further optimizing scheme, the pulling force subassembly includes extension spring 104, and extension spring 104 fixed connection is in the intermediate position of sealing piece 103 near the one side of restraint coupling 1 air inlet 401, and through fixed anchor 105 fixed connection between extension spring 104 one end and the restraint coupling 1 inner wall top, the triangle-shaped structure setting is between extension spring 104, sealing piece 103, the restraint coupling 1 inner wall.
The negative pressure sampling pump 4 firstly exhausts the inside of the beam tube 2 to form a negative pressure space in the beam tube 2, and then the sealing piece 103 pulls the pull ring to be opened under the negative pressure condition to enable the beam tube joint 1 to be communicated with the beam tube 2, so that gas collection is realized.
Further optimizing scheme, dustproof subassembly includes parallel arrangement's mesh board 101, and mesh board 101 fixed connection is in the inlet end department of beam coupling 1, and mesh board 101 corresponds the setting with beam coupling 1 inner chamber, is provided with dustproof cotton 102 between two mesh boards 101.
The dust-proof assembly prevents the air sample in the goaf from entering the bladder air bag 5, and the mesh plate 101 and the beam pipe joint 1 can be detached or fixed, so that the mesh plate 101 and the inner wall of the beam pipe joint 1 are completely sealed.
According to a further optimization scheme, pressing pieces 106 are symmetrically and fixedly connected to the inner wall of the air outlet end of the beam tube joint 1, and the beam tube 2 is fixedly connected with the air outlet end of the beam tube joint 1 through the pressing pieces 106.
In a further optimized scheme, the material of the beam tube joint 1 comprises aluminum alloy, the cross section of the beam tube joint 1 is rectangular, an annular channel is arranged in the middle, the outer contour size of the cross section of the beam tube joint 1 is 14mm multiplied by 14mm, and the diameter of the inner contour is 10mm.
Further optimizing scheme is provided with air inlet 401, air outlet 406 and gas appearance export 407 on the negative pressure sampling pump 4, and air outlet 406 and gas appearance export 407 all communicate with air inlet 401, and are provided with the closure assembly between air outlet 406, gas appearance export 407 and the air inlet 401 respectively, and air inlet 401 and restraint pipe 2 one end fixed intercommunication, bladder gasbag 5 fixed connection are on gas appearance export 407.
Further optimizing scheme, the closed assembly includes air valve 404 and air sample valve 405, and air valve 404 sets up between air outlet 406 and air inlet 401, and air sample valve 405 sets up between air sample outlet 407 and air inlet 401, is provided with control coil 403 on air outlet 406 and the air sample outlet 407 respectively, is provided with electromagnetic control unit 402 on the negative pressure sampling pump 4, electric connection between electromagnetic control unit 402 and the control coil 403.
In the exhaust stage, the air valve 404 is opened, the air sample valve 405 is closed, the air in the restraint tube 2 is discharged out of the restraint tube 2 under the action of the negative pressure sampling pump 4, in the gas collection stage, the air sample valve 405 is opened, and the air valve 404 is closed, so that the gas in the goaf enters the bladder air bag 5.
Referring to fig. 6 of the specification, in this embodiment, the control coil 403 and the electromagnetic control unit 402 are both in the prior art, in the initial state, the negative pressure sampling pump 4 forms a negative pressure state in the bundle tube 2, the air in the bundle tube 2 is pumped out and is discharged through the air outlet 406 on the sampling pump (the pressure change condition of the negative pressure sampling pump 4 is shown as stage i of fig. 6 of the specification), after the air in the bundle tube 2 is discharged, the sealing sheet 103 pulls the tension spring 104 to rotate under the negative pressure effect, at this time, the bundle tube joint 1 is communicated with the bundle tube 2, the pressure of the negative pressure sampling pump 4 is changed from fast rise to slow rise (the pressure change condition of the negative pressure sampling pump 4 is shown as stage ii of fig. 6 of the specification), then the air sample valve 405 is opened, the air valve 404 is closed, and at this time, the air sample in the goaf flows into the bladder 5 through the air sample outlet 407 for gas collection.
Example 2
In this embodiment, the sealing piece 103 pulls the spring to open under the condition of receiving the air pressure in the tube bundle 2, but the pulling force of the spring gradually increases along with the increase of the elongation deformation of the spring, and the sealing piece 103 is lost in the tube bundle 2, so that the internal environment does not keep on the initial pressure, and the sealing piece 103 cannot be completely opened and can only be opened by a certain angle in the pressure control range, therefore, in this embodiment, the tension spring 104 is provided with two sections, and a miniature bidirectional electric control telescopic rod is arranged between the two sections of tension springs 104, and the elongation of the two tension springs 104 is regulated through the miniature bidirectional electric control telescopic rod, so that the elasticity of the tension springs 104 is controlled, and the regulation of the pulling force is performed when the air pressure in the tube bundle 2 is lower, so that the air collection cannot be performed in the low-pressure state is avoided.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. A negative pressure sampling device for colliery goaf gas sample collection, its characterized in that includes:
a negative pressure sampling pump (4);
the device comprises a beam tube (2), wherein one end of the beam tube (2) is fixedly communicated with the air inlet end of the negative pressure sampling pump (4);
The beam pipe joint (1) is detachably connected to the other end of the Shu Guan (2), the beam pipe joint (1) stretches into a goaf, and a voltage-controlled switch is arranged in the beam pipe joint (1);
The bladder air bag (5) is detachably connected to the negative pressure sampling pump;
The anti-dust pipe comprises a pipe bundle (2), and is characterized in that a protective sleeve (3) is sleeved outside the pipe bundle (2), the pipe bundle joint (1) is arranged in the protective sleeve (3), and a dust-proof assembly is arranged at the inlet of the pipe bundle joint (1).
2. The negative pressure sampling device for collecting gas samples in a goaf of a coal mine according to claim 1, wherein the negative pressure sampling device comprises: the pressure-controlled switch comprises a sealing sheet (103), the top end of the sealing sheet (103) is connected in the beam pipe joint (1) through a fixed anchor (105), the rotating force is correspondingly arranged in the beam pipe joint (1), an arc-shaped groove is formed in the inner bottom of the beam pipe joint (1), the circle corresponding to the circle of the arc-shaped groove is located on the fixed anchor (105), the bottom surface of the sealing sheet (103) is in sliding fit with the arc-shaped groove, one side, close to the air inlet end of the beam pipe (2), of the arc-shaped groove is fixedly connected with a stop block, the stop block is in limit fit with the sealing sheet (103), and one side, close to the air inlet end of the beam pipe joint (1), of the sealing sheet (103) is provided with a tension component.
3. The negative pressure sampling device for collecting gas samples in a goaf of a coal mine according to claim 2, wherein the negative pressure sampling device comprises: the tension assembly comprises a tension spring (104), the tension spring (104) is fixedly connected to the middle position of one side, close to an air inlet (401) of the pipe bundling joint (1), of the sealing piece (103), one end of the tension spring (104) is fixedly connected with the top of the inner wall of the pipe bundling joint (1) through a fixed anchor (105), and the tension spring (104), the sealing piece (103) and the inner wall of the pipe bundling joint (1) are arranged in a triangular structure.
4. The negative pressure sampling device for collecting gas samples in a goaf of a coal mine according to claim 1, wherein the negative pressure sampling device comprises: the dustproof assembly comprises mesh plates (101) which are arranged in parallel, the mesh plates (101) are fixedly connected to the air inlet end of the beam pipe joint (1), the mesh plates (101) are correspondingly arranged in the inner cavity of the beam pipe joint (1), and dustproof cotton (102) is arranged between the two mesh plates (101).
5. The negative pressure sampling device for collecting gas samples in a goaf of a coal mine according to claim 1, wherein the negative pressure sampling device comprises: the inner wall of the air outlet end of the beam pipe joint (1) is symmetrically and fixedly connected with a pressing sheet (106), and the beam pipe (2) is fixedly connected with the air outlet end of the beam pipe joint (1) through the pressing sheet (106).
6. The negative pressure sampling device for collecting gas samples in a goaf of a coal mine according to claim 1, wherein the negative pressure sampling device comprises: the material of the beam pipe joint (1) comprises aluminum alloy, the cross section of the beam pipe joint (1) is rectangular, an annular channel is arranged in the middle of the beam pipe joint, the outer contour size of the cross section of the beam pipe joint (1) is 14mm multiplied by 14mm, and the diameter of the inner contour is 10mm.
7. The negative pressure sampling device for collecting gas samples in a goaf of a coal mine according to claim 1, wherein the negative pressure sampling device comprises: be provided with air inlet (401), air outlet (406) and gas appearance export (407) on negative pressure sampling pump (4), air outlet (406) with gas appearance export (407) all with air inlet (401) intercommunication, just air outlet (406) gas appearance export (407) with be provided with seal assembly between air inlet (401) respectively, air inlet (401) with restraint pipe (2) one end fixed communication, bladder gasbag (5) fixed connection is in on gas appearance export (407).
8. The negative pressure sampling device for collecting gas samples in a goaf of a coal mine according to claim 7, wherein: the sealing assembly comprises an air valve (404) and an air sample valve (405), wherein the air valve (404) is arranged between the air outlet (406) and the air inlet (401), the air sample valve (405) is arranged between the air sample outlet (407) and the air inlet (401), control coils (403) are respectively arranged on the air outlet (406) and the air sample outlet (407), an electromagnetic control unit (402) is arranged on the negative pressure sampling pump (4), and the electromagnetic control unit (402) is electrically connected with the control coils (403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410423818.8A CN118010434B (en) | 2024-04-10 | 2024-04-10 | Negative pressure sampling device for collecting gas samples in coal mine goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410423818.8A CN118010434B (en) | 2024-04-10 | 2024-04-10 | Negative pressure sampling device for collecting gas samples in coal mine goaf |
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| Publication Number | Publication Date |
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| CN118010434A true CN118010434A (en) | 2024-05-10 |
| CN118010434B CN118010434B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410423818.8A Active CN118010434B (en) | 2024-04-10 | 2024-04-10 | Negative pressure sampling device for collecting gas samples in coal mine goaf |
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| CN (1) | CN118010434B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070110622A1 (en) * | 2003-09-15 | 2007-05-17 | Anglo Operations Limited | Apparatus for monitoring the concentration of a gas |
| CN104453982A (en) * | 2014-10-30 | 2015-03-25 | 安徽理工大学 | Simple and convenient goaf bundle pipe gas extraction device and method |
| CN109187111A (en) * | 2018-09-05 | 2019-01-11 | 淄博祥龙测控技术有限公司 | Gas sampling assembly and method of the coal mine gob spontaneous combustion three with dynamic division |
| CN109283292A (en) * | 2018-09-17 | 2019-01-29 | 河南工程学院 | A kind of laneway type goaf gas observation device and observation method |
| CN208984408U (en) * | 2018-09-05 | 2019-06-14 | 淄博祥龙测控技术有限公司 | A kind of gas sampling assembly divided for coal mine gob spontaneous combustion three with dynamic |
| CN209416791U (en) * | 2018-12-13 | 2019-09-20 | 山西潞安环保能源开发股份有限公司 | A kind of goaf deep gas sampler |
| CN110926875A (en) * | 2019-11-29 | 2020-03-27 | 辽宁工程技术大学 | Coal mine goaf bundle pipe gas collecting and storing device and using method thereof |
| CN214584344U (en) * | 2021-02-08 | 2021-11-02 | 贵州盘江精煤股份有限公司 | Gas detection device under collecting space area gas drainage condition |
-
2024
- 2024-04-10 CN CN202410423818.8A patent/CN118010434B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070110622A1 (en) * | 2003-09-15 | 2007-05-17 | Anglo Operations Limited | Apparatus for monitoring the concentration of a gas |
| CN104453982A (en) * | 2014-10-30 | 2015-03-25 | 安徽理工大学 | Simple and convenient goaf bundle pipe gas extraction device and method |
| CN109187111A (en) * | 2018-09-05 | 2019-01-11 | 淄博祥龙测控技术有限公司 | Gas sampling assembly and method of the coal mine gob spontaneous combustion three with dynamic division |
| CN208984408U (en) * | 2018-09-05 | 2019-06-14 | 淄博祥龙测控技术有限公司 | A kind of gas sampling assembly divided for coal mine gob spontaneous combustion three with dynamic |
| CN109283292A (en) * | 2018-09-17 | 2019-01-29 | 河南工程学院 | A kind of laneway type goaf gas observation device and observation method |
| CN209416791U (en) * | 2018-12-13 | 2019-09-20 | 山西潞安环保能源开发股份有限公司 | A kind of goaf deep gas sampler |
| CN110926875A (en) * | 2019-11-29 | 2020-03-27 | 辽宁工程技术大学 | Coal mine goaf bundle pipe gas collecting and storing device and using method thereof |
| CN214584344U (en) * | 2021-02-08 | 2021-11-02 | 贵州盘江精煤股份有限公司 | Gas detection device under collecting space area gas drainage condition |
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| Publication number | Publication date |
|---|---|
| CN118010434B (en) | 2024-06-04 |
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