CN109975171B - Gas survey device and use method - Google Patents
Gas survey device and use method Download PDFInfo
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- CN109975171B CN109975171B CN201910335568.1A CN201910335568A CN109975171B CN 109975171 B CN109975171 B CN 109975171B CN 201910335568 A CN201910335568 A CN 201910335568A CN 109975171 B CN109975171 B CN 109975171B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000003795 desorption Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000003245 coal Substances 0.000 claims description 17
- 238000011835 investigation Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000012780 transparent material Substances 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a gas survey device and a use method thereof, wherein the gas survey device comprises a test tube, and a graduated scale is arranged on the outer side wall of the test tube; the upper end opening of the test tube is detachably connected with an upper end cover, the top wall of the upper end cover is connected with a fine-tuning rubber plug, the fine-tuning rubber plug comprises a screw, a rubber plug is fixed at the right lower end of the screw, and an adjusting handle is fixed at the upper end of the screw; the lower port of the test tube is detachably connected with a lower end cover, a U-shaped drain pipe is connected in the left part of the lower end cover, an air charging pipe is connected in the right part of the lower end cover, the free end of the air charging pipe is positioned outside the lower end cover and is used for being connected with an air outlet pipe of the gas desorption device, and the drain pipe and the other end of the air charging pipe are communicated with the bottom of the test tube when the lower end cover is covered on the lower port of the test tube; the invention is convenient for cleaning, and can conveniently adjust the initial height of the liquid level of the water in the test tube, namely, the zero setting is convenient.
Description
Technical Field
The invention belongs to the technical field of coal seam gas investigation, and particularly relates to a gas investigation device and a use method thereof.
Background
The occurrence forms of the gas in the coal bed are free state and adsorption state, wherein the adsorption gas accounts for about 90% of the total gas content, and a large amount of adsorption gas is desorbed in the coal and gas outburst to participate in breaking the coal body and throwing the coal. In the coal mining process, gas is desorbed from the coal body, so that gas accidents can be possibly caused, and if the gas can be reasonably developed and utilized, the gas becomes a clean and efficient energy source. Therefore, an experimental device is needed, which can detect the content of adsorbed gas in a certain amount of coal samples adopted by desorption of the gas desorption device, so as to formulate reasonable gas exploitation measures.
The existing gas survey device is divided into electronic type and mechanical type, but the electronic type has extremely high cost and is easy to damage, while the mechanical type has low cost, the operation is complex, and the two types are inconvenient to clean; moreover, the prior gas survey device is inconvenient to adjust the initial height of the liquid level in the pipe body, and is further inconvenient to zero. In a gas survey device in the prior art, a small opening is arranged below a base at a water filling opening of a pipe body, water is not convenient to fill, zero setting is achieved by blowing air through a nozzle, and finally cleaning is achieved by extruding a cleaning agent from the water filling opening, filling water is shaken, and cleaning is not clean and is inconvenient.
Disclosure of Invention
The invention provides a gas survey device and a use method thereof, wherein an upper end cover and a lower end cover in the gas survey device are detachably connected with a test tube, so that the gas survey device is convenient to clean, and the initial height of the liquid level of water in the test tube can be conveniently adjusted, namely, the gas survey device is convenient to zero.
In order to solve the technical problems, the invention adopts the following technical scheme:
The gas survey device comprises a vertical test tube with an opening at the upper end and a transparent end at the lower end, and a vertical graduated scale is arranged on the outer side wall of the test tube; the upper port of the test tube is detachably and hermetically connected with an upper end cover, a vertical threaded through hole is formed in the middle of the top wall of the upper end cover, a fine-tuning rubber plug is connected to the top wall of the upper end cover, the fine-tuning rubber plug comprises a vertical screw rod, the screw rod penetrates through the threaded through hole and is screwed with the threaded through hole, a rubber plug which is vertical and cylindrical in shape and has an outer diameter matched with the inner diameter of the test tube is fixedly connected to the right lower end of the screw rod, an adjusting handle is fixedly connected to the upper end of the screw rod, when the upper end cover covers the upper port of the test tube, the rubber plug is positioned in the test tube, and the adjusting handle is positioned above the upper end cover; the detachable sealing connection of port has the bottom end cover under the test tube, and the bottom end cover left part in-connection has U type drain pipe, and the drain pipe free end is in outside the bottom end cover and the drain pipe free end upwards sets up, and the bottom end cover right part in-connection has the gas tube, and the gas tube free end is in outside the bottom end cover and the gas tube free end is used for linking to each other with gas desorption device's outlet duct, and the bottom end cover lid is in the bottom end opening under the test tube the drain pipe, the other end of gas tube all is linked together with the test tube bottom.
Further, the upper end cover is vertical and is cylindrical, the bottom end of the upper end cover is open, when the upper end cover is covered on the upper port of the test tube, the inner side wall of the upper end cover is screwed with the outer side wall of the upper part of the test tube, and the lower surface of the top wall of the upper end cover and the upper end of the test tube are at the same horizontal height.
Further, the lower end cover is vertical and is the cuboid shape, and lower end cover top surface middle part is equipped with the ascending just vertical blind hole that is the cylinder shape of opening, and blind hole diameter and test tube external diameter looks adaptation, and when the lower end cover lid was closed in test tube lower port, the blind hole inside wall of lower end cover and test tube lower part lateral wall screw thread connect and the lower end of lower end cover blind hole lower extreme is in same level with the test tube lower extreme, and the drain pipe is in blind hole lower extreme department with the other end of gas tube.
Further, left and right lifting lugs are symmetrically fixed on the left and right parts of the top surface of the upper end cover.
Further, the adjusting handle is positioned at the right upper end of the screw rod, and the adjusting handle is fixedly and integrally connected with the upper end of the screw rod; the rubber plug is detachably and fixedly connected with the right lower end of the screw rod.
Further, the upper end cover, the lower end cover, the drain pipe and the inflation pipe are all made of transparent materials, and the fine-tuning rubber plug is made of opaque materials.
The application method of the gas survey device comprises the following steps:
(1) The fine-tuning rubber plug is arranged on the top wall of the upper end cover, the adjusting handle is rotated to enable the screw rod to move upwards along the threaded through hole, and then the rubber plug moves upwards along with the screw rod until the top surface of the rubber plug clings to the lower surface of the top wall of the upper end cover;
(2) Installing the upper end cover in the step (1) on the upper port of the test tube, inverting the test tube, enabling the upper end cover and the upper port of the test tube to be arranged below and enabling the lower port of the test tube to be arranged above, and then filling water into the test tube from the lower port of the test tube until the test tube is full;
(3) Installing a lower end cover at the lower port of the test tube in the step (2), keeping the test tube upside down, blocking the free end of the gas charging tube by hand, connecting an air outlet pipe of the gas desorption device with the free end of the gas charging tube, and then erecting the test tube;
(4) Rotating the adjusting handle to enable the screw rod to move downwards along the threaded through hole, further enabling the rubber plug to move downwards in the test tube in the step (3) under the drive of the screw rod, enabling the rubber plug to discharge redundant water in the test tube outwards from the drain pipe in the downward moving process of the rubber plug until the horizontal height of the bottom surface of the rubber plug is at the same horizontal height as the zero scale mark of the scale on the test tube, enabling the liquid level of the water in the test tube to be at the zero scale mark, and stopping rotating the adjusting handle;
(5) Opening a working switch of the gas desorption device and opening an air outlet pipe valve of the gas desorption device to start desorption and detection of the gas, wherein the gas desorption device desorbs a certain amount of the gas adsorbed in the coal sample, and the gas desorption device sequentially passes through an air outlet pipe of the gas desorption device and an air charging pipe of a lower end cover to be charged into a test tube, and the gas charged into the test tube discharges water in the test tube outwards through a water discharging pipe, namely, the gas investigation device detects the content of the gas adsorbed in the certain amount of the coal sample by using a water discharging and air collecting method;
(6) Recording the reading of the liquid level of the water in the test tube when the liquid level of the water in the test tube in the step (5) is not changed any more, wherein the reading is the content of the adsorbed gas in a certain amount of coal sample;
(7) After detection, the gas survey device is disassembled, cleaned and dried, and then a tool box is placed for the next use.
Further, in step (4): after the rotation of the adjusting handle is stopped, a rope is tied on the left lifting lug and the right lifting lug of the upper end cover, the length of the rope is determined according to the requirement, and then the gas survey device is hung.
Compared with the prior art, the invention has the beneficial effects that:
In the invention, the upper end and the lower end of the test tube are both opened, the upper port of the test tube is detachably and hermetically connected with the upper end cover, and the lower port of the test tube is detachably and hermetically connected with the lower end cover, so that after the gas survey device is used, the upper end cover is detached from the upper port of the test tube and the lower end cover is detached from the lower port of the test tube, then the inner side wall of the test tube is cleaned by a cleaning brush, and the detached upper end cover and lower end cover are cleaned by the cleaning brush, thereby the gas survey device is convenient to clean;
According to the invention, a vertical threaded through hole is formed in the middle of the top wall of the upper end cover, a fine-tuning rubber plug is connected to the top wall of the upper end cover, the fine-tuning rubber plug comprises a vertical screw rod, the screw rod penetrates through the threaded through hole and is screwed with the screw thread through hole, a vertical rubber plug which is in a cylindrical shape and is matched with the inside diameter of a test tube in external diameter is fixedly connected to the right lower end of the screw rod, an adjusting handle is fixedly connected to the upper end of the screw rod, when the upper end cover covers the upper end opening of the test tube, the rubber plug is positioned above the upper end cover, so that when the gas investigation device is used, the screw rod moves upwards along the threaded through hole by rotating the adjusting handle, the rubber plug moves upwards along with the screw rod until the top surface of the rubber plug is tightly attached to the lower surface of the top wall of the upper end cover, then the upper end cover is installed to the upper end opening of the test tube, the test tube is inverted, the upper end cover and the upper end of the test tube are positioned below the upper end of the test tube, then the lower end cover is installed to the lower end opening of the test tube and is kept upside down, the free end of the air tube is blocked, the air outlet pipe is connected to the free end of the air outlet pipe, the gas desorption device is positioned in the test tube, the air outlet pipe is conveniently connected to the air level of the air pipe, and then the air outlet pipe is conveniently moved to the water level in the test tube, and the water level is conveniently adjusted to the water level in the test tube, and the water level is conveniently and the water level in the test tube, and the test tube is in the test tube and the water level is completely level;
In the invention, before water is injected into a test tube, the adjusting handle is rotated to enable the screw rod to move upwards along the threaded through hole, the rubber plug moves upwards along with the screw rod until the top surface of the rubber plug is tightly attached to the lower surface of the top wall of the upper end cover, then the upper end cover is arranged on the upper port of the test tube, the test tube is inverted, the upper end cover and the upper port of the test tube are arranged below, the lower port of the test tube is arranged above, and then water is injected into the test tube from the lower port of the test tube until the test tube is full, and the lower end of the test tube is completely in an open state, so that water can be conveniently injected into the test tube;
In the step (4) of the using method of the gas desorption device, after stopping rotating the adjusting handle, tying a rope on the left and right lifting lugs of the upper end cover, determining the length of the rope according to the requirement, and then hanging the gas investigation device, so that the using height of the gas investigation device can be adjusted according to the environment;
In the invention, when the upper end cover is covered on the upper port of the test tube, the inner side wall of the upper end cover is screwed with the outer side wall of the upper part of the test tube, and when the lower end cover is covered on the lower port of the test tube, the inner side wall of the blind hole of the lower end cover is screwed with the outer side wall of the lower part of the test tube, so that the upper end cover and the lower end cover are disassembled conveniently;
In the invention, the test tube is transparent, and the upper end cover, the lower end cover, the drain pipe and the inflation tube are all made of transparent materials, so that the whole working process of the gas investigation device can be visually observed when the gas investigation device is used;
the gas survey device provided by the invention is portable, low in cost, simple to operate, labor-hour-saving and convenient to improve the working efficiency.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the transparent three-dimensional structure of FIG. 1;
FIG. 3 is a schematic view of the transparent perspective of the upper end cap of FIG. 2;
FIG. 4 is a schematic view of the structure of FIG. 3 in another direction;
FIG. 5 is a schematic view of the fine tuning plug of FIG. 2;
FIG. 6 is a schematic view of the transparent perspective of the cuvette of FIG. 2;
FIG. 7 is a schematic view of a transparent perspective structure of the lower end cap of FIG. 2;
Fig. 8 is a schematic view of the structure of fig. 7 in another direction.
Description of the drawings: 1. test tube, 2, scale, 3, upper end cover, 4, screw thread through hole, 5, screw rod, 6, the rubber buffer, 7, adjustment handle, 8, lower end cover, 9, drain pipe, 10, inflation tube, 11, blind hole, 12, left lug, 13, right lug.
Detailed Description
As shown in fig. 1,2, 3, 4, 5, 6, 7 and 8, a gas survey device comprises a test tube 1 which is vertical, has an upper end and a lower end which are both open and transparent, wherein the outer side wall of the test tube 1 is provided with a vertical graduated scale 2; the upper port of the test tube 1 is detachably and hermetically connected with an upper end cover 3, a vertical threaded through hole 4 is formed in the middle of the top wall of the upper end cover 3, a fine-tuning rubber plug is connected to the top wall of the upper end cover 3, the fine-tuning rubber plug comprises a vertical screw 5, the screw 5 penetrates through the threaded through hole 4 and is screwed with the threaded through hole 4, a rubber plug 6 which is vertical and cylindrical in shape and has an outer diameter matched with the inner diameter of the test tube 1 is fixedly connected to the right lower end of the screw 5, an adjusting handle 7 is fixedly connected to the upper end of the screw 5, when the upper end cover 3 covers the upper port of the test tube 1, the rubber plug 6 is positioned in the test tube 1, the adjusting handle 7 is positioned above the upper end cover 3, and left and right lifting lugs 12 and 13 are symmetrically fixed to the left and right parts of the top surface of the upper end cover 3; the detachable sealing connection of test tube 1 lower port has bottom end cover 8, and bottom end cover 8 left part in-connection has U type drain pipe 9, and drain pipe 9 free end is in outside bottom end cover 8 and drain pipe 9 free end upwards sets up, and bottom end cover 8 right part in-connection has gas tube 10, and gas tube 10 free end is in outside bottom end cover 8 and gas tube 10 free end is used for linking to each other with gas desorption device's outlet duct, and bottom end cover 8 lid is in test tube 1 lower port time drain pipe 9, gas tube 10's the other end all is linked together with test tube 1 bottom.
Wherein, upper end cover 3 is vertical and be the drum shape, upper end cover 3 bottom opening, when upper end cover 3 lid closes in test tube 1 upper port, upper end cover 3 inside wall and test tube 1 upper portion lateral wall screw thread connect and upper end cover 3 roof lower surface and test tube 1 upper end are in same level.
Wherein, bottom end cover 8 is vertical and be the cuboid shape, bottom end cover 8 top surface middle part is equipped with the opening upwards and vertical and be cylindrical shape's blind hole 11, blind hole 11 diameter and test tube 1 external diameter looks adaptation, when bottom end cover 8 lid closes in test tube 1 lower port, bottom end cover 8's blind hole 11 inside wall and test tube 1 lower part lateral wall screw thread connect and bottom end cover 8 blind hole 11 lower extreme is in same level with test tube 1 lower extreme, drain pipe 9 and the other end of gas tube 10 all are in blind hole 11 lower extreme department.
The adjusting handle 7 is positioned at the right upper end of the screw 5, and the adjusting handle 7 is fixedly and integrally connected with the upper end of the screw 5; the rubber plug 6 is detachably and fixedly connected with the right lower end of the screw 5.
Wherein, the upper end cover 3, the lower end cover 8, the drain pipe 9 and the inflation tube 10 are all made of transparent materials, and the fine-tuning rubber plug is made of opaque materials.
The application method of the gas survey device comprises the following steps:
(1) The fine-tuning rubber plug is arranged on the top wall of the upper end cover 3, the adjusting handle 7 is rotated to enable the screw 5 to move upwards along the threaded through hole 4, and then the rubber plug 6 moves upwards along with the screw 5 until the top surface of the rubber plug 6 is tightly attached to the lower surface of the top wall of the upper end cover 3;
(2) Installing the upper end cover 3 in the step (1) on the upper port of the test tube 1, inverting the test tube 1, enabling the upper end cover 3 and the upper port of the test tube 1 to be positioned below and enabling the lower port of the test tube 1 to be positioned above, and then filling water into the test tube 1 from the lower port of the test tube 1 until the test tube 1 is full;
(3) Installing a lower end cover 8 at the lower port of the test tube 1 in the step (2), keeping the test tube 1 upside down, blocking the free end of the gas charging tube 10 by hand, connecting an air outlet pipe of the gas desorption device with the free end of the gas charging tube 10, and then erecting the test tube 1;
(4) Rotating the adjusting handle 7 to enable the screw 5 to move downwards along the threaded through hole 4, further enabling the rubber stopper 6 to move downwards in the test tube 1 in the step (3) under the drive of the screw 5, enabling the rubber stopper 6 to discharge redundant water in the test tube 1 outwards from the drain pipe 9 in the downward moving process of the rubber stopper 6 until the horizontal height of the bottom surface of the rubber stopper 6 is at the same horizontal height as the zero scale mark of the graduated scale 2 on the test tube 1, enabling the liquid level of the water in the test tube 1 to be at the zero scale mark at the moment, and then stopping rotating the adjusting handle 7;
(5) Opening a working switch of the gas desorption device and opening an air outlet pipe valve of the gas desorption device to start desorption and detection of the gas, wherein the gas desorption device desorbs a certain amount of the gas adsorbed in the coal sample, and the gas desorption device sequentially passes through an air outlet pipe of the gas desorption device and an air charging pipe 10 of a lower end cover 8 to be charged into a test tube 1, and the gas charged into the test tube 1 discharges water in the test tube 1 outwards through a water discharging pipe 9, namely, the gas investigation device detects the content of the gas adsorbed in the certain amount of the coal sample by using a water discharging and air collecting method;
(6) Recording the reading of the liquid level of the water in the test tube 1 when the liquid level of the water in the test tube 1 in the step (5) is not changed any more, wherein the reading is the content of the adsorbed gas in a certain amount of coal sample;
(7) After detection, the gas survey device is disassembled, cleaned and dried, and then a tool box is placed for the next use.
Wherein, in the step (4): after the rotation of the adjusting handle 7 is stopped, a rope is tied on the left lifting lug 12 and the right lifting lug 13 of the upper end cover 3, the length of the rope is determined according to the requirement, and then the gas survey device is hung.
Claims (8)
1. A gas survey apparatus, characterized in that: the device comprises a vertical test tube with openings at the upper end and the lower end and transparent, wherein a vertical graduated scale is arranged on the outer side wall of the test tube; the upper port of the test tube is detachably and hermetically connected with an upper end cover, a vertical threaded through hole is formed in the middle of the top wall of the upper end cover, a fine-tuning rubber plug is connected to the top wall of the upper end cover, the fine-tuning rubber plug comprises a vertical screw rod, the screw rod penetrates through the threaded through hole and is screwed with the threaded through hole, a rubber plug which is vertical and cylindrical in shape and has an outer diameter matched with the inner diameter of the test tube is fixedly connected to the right lower end of the screw rod, an adjusting handle is fixedly connected to the upper end of the screw rod, when the upper end cover covers the upper port of the test tube, the rubber plug is positioned in the test tube, and the adjusting handle is positioned above the upper end cover; the detachable sealing connection of port has the bottom end cover under the test tube, and the bottom end cover left part in-connection has U type drain pipe, and the drain pipe free end is in outside the bottom end cover and the drain pipe free end upwards sets up, and the bottom end cover right part in-connection has the gas tube, and the gas tube free end is in outside the bottom end cover and the gas tube free end is used for linking to each other with gas desorption device's outlet duct, and the bottom end cover lid is in the bottom end opening under the test tube the drain pipe, the other end of gas tube all is linked together with the test tube bottom.
2. A gas survey apparatus according to claim 1, wherein: the upper end cover is vertical and is the drum shape, upper end cover bottom opening, and when the upper end cover lid was closed in the test tube upper port, upper end cover inside wall and test tube upper portion lateral wall screw thread connect and upper end cover roof lower surface and test tube upper end are in same level.
3. A gas survey apparatus according to claim 1, wherein: the lower end cover is vertical and be the cuboid shape, and lower end cover top surface middle part is equipped with the ascending just vertical and cylinder shaped blind hole of opening, blind hole diameter and test tube external diameter looks adaptation, and when the lower end cover lid was closed in test tube lower port, the blind hole inside wall of lower end cover was screwed with test tube lower part lateral wall screw thread and the lower end of lower end cover blind hole lower extreme is in same level with the test tube lower extreme, and the drain pipe is in blind hole lower extreme department with the other end of gas tube.
4. A gas survey apparatus according to claim 1, wherein: left and right lifting lugs are symmetrically fixed on the left and right parts of the top surface of the upper end cover.
5. A gas survey apparatus according to claim 1, wherein: the adjusting handle is positioned at the right upper end of the screw rod, and is fixedly and integrally connected with the upper end of the screw rod; the rubber plug is detachably and fixedly connected with the right lower end of the screw rod.
6. A gas survey apparatus according to claim 1, wherein: the upper end cover, the lower end cover, the drain pipe and the inflation tube are all made of transparent materials, and the fine-tuning rubber plug is made of opaque materials.
7. A method of using a gas survey apparatus as claimed in any one of claims 1 to 6, comprising the steps of:
(1) The fine-tuning rubber plug is arranged on the top wall of the upper end cover, the adjusting handle is rotated to enable the screw rod to move upwards along the threaded through hole, and then the rubber plug moves upwards along with the screw rod until the top surface of the rubber plug clings to the lower surface of the top wall of the upper end cover;
(2) Installing the upper end cover in the step (1) on the upper port of the test tube, inverting the test tube, enabling the upper end cover and the upper port of the test tube to be arranged below and enabling the lower port of the test tube to be arranged above, and then filling water into the test tube from the lower port of the test tube until the test tube is full;
(3) Installing a lower end cover at the lower port of the test tube in the step (2), keeping the test tube upside down, blocking the free end of the gas charging tube by hand, connecting an air outlet pipe of the gas desorption device with the free end of the gas charging tube, and then erecting the test tube;
(4) Rotating the adjusting handle to enable the screw rod to move downwards along the threaded through hole, further enabling the rubber plug to move downwards in the test tube in the step (3) under the drive of the screw rod, enabling the rubber plug to discharge redundant water in the test tube outwards from the drain pipe in the downward moving process of the rubber plug until the horizontal height of the bottom surface of the rubber plug is at the same horizontal height as the zero scale mark of the scale on the test tube, enabling the liquid level of the water in the test tube to be at the zero scale mark, and stopping rotating the adjusting handle;
(5) Opening a working switch of the gas desorption device and opening an air outlet pipe valve of the gas desorption device to start desorption and detection of the gas, wherein the gas desorption device desorbs a certain amount of the gas adsorbed in the coal sample, and the gas desorption device sequentially passes through an air outlet pipe of the gas desorption device and an air charging pipe of a lower end cover to be charged into a test tube, and the gas charged into the test tube discharges water in the test tube outwards through a water discharging pipe, namely, the gas investigation device detects the content of the gas adsorbed in the certain amount of the coal sample by using a water discharging and air collecting method;
(6) Recording the reading of the liquid level of the water in the test tube when the liquid level of the water in the test tube in the step (5) is not changed any more, wherein the reading is the content of the adsorbed gas in a certain amount of coal sample;
(7) After detection, the gas survey device is disassembled, cleaned and dried, and then a tool box is placed for the next use.
8. The method of claim 7, wherein in step (4): after the rotation of the adjusting handle is stopped, a rope is tied on the left lifting lug and the right lifting lug of the upper end cover, the length of the rope is determined according to the requirement, and then the gas survey device is hung.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910335568.1A CN109975171B (en) | 2019-04-24 | 2019-04-24 | Gas survey device and use method |
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|---|---|---|---|
| CN201910335568.1A CN109975171B (en) | 2019-04-24 | 2019-04-24 | Gas survey device and use method |
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| CN109975171A CN109975171A (en) | 2019-07-05 |
| CN109975171B true CN109975171B (en) | 2024-04-19 |
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| CN113216934B (en) * | 2021-05-17 | 2022-05-03 | 吕梁学院 | Coal seam gas content measuring device of directional drilling machine |
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| JP2004317260A (en) * | 2003-04-15 | 2004-11-11 | Kansai Coke & Chem Co Ltd | Method for measuring quantity of discharge of gas included in coal |
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| CN102419295A (en) * | 2011-08-19 | 2012-04-18 | 中国矿业大学(北京) | Loaded coal rock constant pressure gas adsorption desorption testing system and method thereof |
| CN105547907A (en) * | 2016-01-26 | 2016-05-04 | 河南理工大学 | Servo measuring testing system and method for coal sample gas adsorption and desorption |
| CN105806420A (en) * | 2016-05-17 | 2016-07-27 | 山东鼎安检测技术有限公司 | Device and method for measuring gas flow of drill hole of water-containing coal bed |
| CN209764644U (en) * | 2019-04-24 | 2019-12-10 | 吕梁学院 | Gas survey device |
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