CN216847090U - Automobile inspection waste gas sampling device - Google Patents
Automobile inspection waste gas sampling device Download PDFInfo
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- CN216847090U CN216847090U CN202220488988.0U CN202220488988U CN216847090U CN 216847090 U CN216847090 U CN 216847090U CN 202220488988 U CN202220488988 U CN 202220488988U CN 216847090 U CN216847090 U CN 216847090U
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- sampling bottle
- fixed
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- sampling
- air inlet
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- 238000005070 sampling Methods 0.000 title claims abstract description 98
- 238000007689 inspection Methods 0.000 title claims abstract description 14
- 239000002912 waste gas Substances 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 79
- 239000007789 gas Substances 0.000 claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000017525 heat dissipation Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 24
- 238000010438 heat treatment Methods 0.000 description 5
- 241000283216 Phocidae Species 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 206010053615 Thermal burn Diseases 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an automobile detection waste gas sampling device, which comprises a sampling bottle, wherein the upper end of the sampling bottle is provided with an air inlet, the air inlet is connected with a connecting sleeve through a connecting pipe, the lower end of the air inlet is matched with a sealing plug to form a sealing mechanism, the sealing plug is arranged in the sampling bottle, the right side of the upper end of the sampling bottle is provided with an air outlet valve port, and the left side of the upper end of the sampling bottle is provided with a pressure relief port; further comprising: the filter screen is fixed in the connecting sleeve to realize the solid-gas separation function; and the heat dissipation plate is concentrically fixed at the outer side of the sampling bottle at an equal angle. This automobile inspection waste gas sampling device adopts heat dissipation protection machanism, can realize the quick radiating action of device to avoid taking place because of the condition that the too high personnel that leads to of tail gas temperature scalded, cooperation automatic seal mechanism and automatic pressure relief mechanism can realize the guard action of device, can guarantee the leakproofness of tail gas sample, can avoid again taking place because of the too big condition that leads to the device to explode and split of the inside pressure of sampling device.
Description
Technical Field
The utility model relates to an automobile inspection technical field specifically is an automobile inspection waste gas sampling device.
Background
The automobile is a main vehicle for people to go out at the present stage, a large amount of tail gas is generated in the automobile driving process, in order to determine the influence of substances contained in the tail gas on air, the automobile tail gas needs to be sampled and detected, so that the automobile tail gas can be pertinently treated at the later stage, the existing sampling device for detecting the automobile tail gas is an automobile detection waste gas sampling device of the publication No. CN213580284U, and comprises a box body, universal wheels and a lifting frame arranged in the box body, wherein one side of the box body is provided with an accommodating groove … …, two sides of the middle part of a sampling pipe are provided with spring pieces, and the inlet of the sampling pipe is provided with a funnel;
above-mentioned current sampling device for automobile exhaust still has certain defect when using, when carrying out the tail gas sample, because automobile exhaust discharges again after burning through petrol, the temperature is higher, and current device lacks heat dissipation mechanism, thereby lead to sampling bottle surface temperature higher, and then lead to the problem that the staff easily scalded, and in carrying out the sample process, lack automatic pressure release mechanism, when too big continuation sample of pressure in the sampling bottle, can lead to the sampling bottle to explode and split and lead to personnel's damage scheduling problem, so need improve in order to satisfy actual demand to above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automobile inspection waste gas sampling device to propose to lack heat dissipation protection machanism and lead to easily scalding and lack pressure release mechanism and lead to the problem that the sampling bottle easily explodes and splits when pressure is too big among the solution above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an automobile detection waste gas sampling device comprises a sampling bottle, wherein the upper end of the sampling bottle is provided with an air inlet, the air inlet is connected with a connecting sleeve through a connecting pipe, the lower end of the air inlet is matched with a sealing plug to form a sealing mechanism, the sealing plug is arranged in the sampling bottle, the right side of the upper end of the sampling bottle is provided with an air outlet valve port, and the left side of the upper end of the sampling bottle is provided with a pressure relief port;
further comprising:
the filter screen is fixed in the connecting sleeve to realize the solid-gas separation function;
the heat dissipation plate is concentrically and equiangularly fixed on the outer side of the sampling bottle, a second spring is further fixed in the sampling bottle, a movable plate is fixed at the upper end of the second spring and arranged in the sampling bottle, telescopic rods are symmetrically fixed on the lower end face of the movable plate, and the lower end of each telescopic rod is fixed on the sampling bottle;
the slide bar, sliding connection is in on the sampling bottle, and the slide bar upper end is fixed with the connection rope to the connection rope other end is fixed on the closing plate, and closing plate sliding connection is on the sampling bottle simultaneously.
Preferably, the connecting sleeve is also provided with an inflatable sealing gasket and an air bag;
the inflatable sealing gasket is fixed on the inner side of the connecting sleeve and is made of high-temperature-resistant elastic materials;
the gasbag, through the pipe with inflatable packer interconnect realizes the gas charging action, when carrying out the tail gas sample, is connected with vehicle vent-pipe through the adapter sleeve, aerifys for inflatable packer through pressing the gasbag, until inflatable packer and vehicle vent-pipe laminate each other realize sealed can to guarantee the leakproofness, avoid the tail gas seepage, and can adapt to the vehicle vent-pipe of different diameters through inflatable packer and cooperate, improve the adaptability of device.
Preferably, the seal plug is further provided with a guide rod and a first spring;
the guide rods are vertically and symmetrically fixed on the upper end surface of the sealing plug and are connected to the air inlet in a sliding manner;
first spring is fixed on the guide arm, and the first spring other end is fixed on the air inlet to the guide arm constitutes elastic mechanism through between first spring and the air inlet, constitutes self sealss mechanism through above-mentioned mechanism, accomplishes the back when the sample, through the effect of first spring, can make the sealing plug resume the normal position and realize sealed effect, avoids the sample to leak, and when the sealing plug removed, through the slip guide effect of guide arm, guarantees the stability that the sealing plug removed.
Preferably, the heating panel outside still is fixed with the heat insulating board and is used for the guard action, and impartial interval has seted up the through-hole on heating panel and the heat insulating board and has made things convenient for the air to flow, constitutes the heat dissipation guard action through above-mentioned mechanism, through the effect of heating panel and through-hole, can realize the quick heat dissipation of device, and the effect of cooperation heat insulating board can effectively avoid leading to the condition emergence of scald because of automobile exhaust high temperature.
Preferably, the movable plate is further provided with a sealing rubber gasket and a top rod;
the sealing rubber gasket is fixed on the outer side of the movable plate, and the sealing rubber gasket and the inner wall of the sampling bottle are in contact with each other and slide to realize a sealing effect;
the ejector pin is fixed terminal surface under the fly leaf, and the ejector pin is located the slide bar directly over to ejector pin length is greater than the gliding distance of slide bar, when the fly leaf moves down under the atmospheric pressure effect, guarantees the sealed effect between fly leaf and the sample bottle through the effect of sealed cushion, and when ejector pin and slide bar contact, can provide basic effort for the removal of slide bar, and through the injecing to ejector pin length, can avoid tail gas leakage.
Preferably, the closing plate mutually supports with the pressure release mouth and constitutes sealing mechanism, and still is fixed with the stretch cord on the closing plate to the stretch cord other end is fixed on the sample bottle, and the closing plate passes through to constitute elastic mechanism between stretch cord and the sample bottle simultaneously, constitutes automatic pressure release mechanism through above-mentioned mechanism, when closing plate and pressure release mouth separation, realizes automatic pressure release effect, and after the pressure release was accomplished, the effect through the stretch cord can make the closing plate resume the normal position and seal with the pressure release mouth, guarantees the leakproofness of device.
Compared with the prior art, the beneficial effects of the utility model are that: this automobile inspection waste gas sampling device adopts heat dissipation protection machanism, can realize the quick radiating action of device to avoid taking place because of the condition that the too high personnel of leading to of tail gas temperature scalded, cooperation automatic sealing mechanism and automatic pressure relief mechanism can realize the guard action of device, can guarantee the leakproofness of tail gas sample, can avoid again taking place because of the condition that the inside pressure of sampling device is too big and leads to the device to explode and split, its concrete content is as follows:
1. the automobile detection waste gas sampling device is provided with the heat dissipation plate, when sampling is carried out, high-temperature tail gas enters the sampling bottle to be stored, quick heat conduction and heat dissipation can be realized under the action of the heat dissipation plate, air circulation can be facilitated under the action of the through hole, air exchange is accelerated, the heat dissipation effect of the accelerating device is further accelerated, and the heat insulation plate is matched, so that personnel can be effectively prevented from being scalded, and the safety of the sampling device is ensured;
2. this automobile inspection waste gas sampling device is provided with the closing plate, and when the sampling bottle internal gas pressure was too big, the fly leaf drove the ejector pin downstream this moment, made the slide bar atress remove through the effect of ejector pin to drive the closing plate and remove and the separation of pressure release mouth, make things convenient for tail gas to pass through the discharge of pressure release mouth and realize automatic pressure release effect, thereby effectively avoid the device to take place because of the too big condition that leads to exploding splitting of atmospheric pressure.
Drawings
FIG. 1 is a schematic view of a front cross-sectional structure of a sampling bottle of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the front cross-sectional structure of the air inlet of the present invention;
FIG. 4 is a schematic view of a top-view cross-sectional structure of the sampling bottle of the present invention;
fig. 5 is the utility model discloses the adapter sleeve looks sideways at section structure sketch map.
In the figure: 1. sampling a bottle; 2. an air inlet; 3. connecting sleeves; 301. an inflatable gasket; 302. an air bag; 4. a filter screen; 5. a sealing plug; 501. a guide bar; 502. a first spring; 6. an air outlet valve port; 7. a pressure relief port; 8. a heat dissipation plate; 801. a heat insulation plate; 802. a through hole; 9. a second spring; 10. a movable plate; 1001. sealing the rubber gasket; 1002. a top rod; 11. a telescopic rod; 12. a slide bar; 13. connecting ropes; 14. a sealing plate; 15. an elastic rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: an automobile detection waste gas sampling device comprises a sampling bottle 1, wherein the upper end of the sampling bottle 1 is provided with an air inlet 2, the air inlet 2 is mutually connected with a connecting sleeve 3 through a connecting pipe, the lower end of the air inlet 2 is mutually matched with a sealing plug 5 to form a sealing mechanism, the sealing plug 5 is arranged in the sampling bottle 1, the right side of the upper end of the sampling bottle 1 is provided with an air outlet valve port 6, and the left side of the upper end of the sampling bottle 1 is provided with a pressure relief port 7;
further comprising:
the filter screen 4 is fixed in the connecting sleeve 3 to realize the solid-gas separation function;
the heat dissipation plate 8 is concentrically and equiangularly fixed on the outer side of the sampling bottle 1, a second spring 9 is further fixed in the sampling bottle 1, a movable plate 10 is fixed at the upper end of the second spring 9, the movable plate 10 is arranged in the sampling bottle 1, telescopic rods 11 are symmetrically fixed on the lower end face of the movable plate 10, and the lower end of each telescopic rod 11 is fixed on the sampling bottle 1;
the slide bar 12, sliding connection is on sampling bottle 1, and slide bar 12 upper end is fixed with connection rope 13 to the other end of connection rope 13 is fixed on sealing plate 14, and sealing plate 14 sliding connection is on sampling bottle 1 simultaneously.
The connecting sleeve 3 is also provided with an inflatable gasket 301 and an air bag 302; the inflatable gasket 301 is fixed on the inner side of the connecting sleeve 3, and the inflatable gasket 301 is made of high-temperature-resistant elastic materials; the air bag 302 is connected with the inflatable sealing gasket 301 through a conduit to realize the inflation function; the sealing plug 5 is also provided with a guide rod 501 and a first spring 502; the guide rods 501 are vertically and symmetrically fixed on the upper end surface of the sealing plug 5, and the guide rods 501 are connected to the air inlet 2 in a sliding manner; the first spring 502 is fixed on the guide rod 501, the other end of the first spring 502 is fixed on the air inlet 2, and the guide rod 501 passes through the space between the first spring 502 and the air inlet 2 to form an elastic mechanism.
When the automobile exhaust gas detection sampling device is used, firstly, the connecting sleeve 3 is connected with the automobile exhaust pipe, then the inflating action on the inflatable sealing gasket 301 is realized by pressing the air bag 302, until the inflatable sealing gasket 301 is attached with the automobile exhaust pipe to realize the sealing action, the leakage in the sampling process is avoided, after the connection is completed, the automobile exhaust enters the air inlet 2 through the action of the connecting sleeve 3 and the guide pipe, the particle impurities in the exhaust can be filtered by matching with the action of the filter screen 4, the purity of the exhaust is ensured, at the moment, the sealing plug 5 is forced to move under the action of the exhaust, so that the sealing plug 5 is separated from the air inlet 2, the exhaust can conveniently enter the sampling bottle 1 to be stored, after the sampling is completed, at the moment, the sealing plug 5 can be restored to the original position under the action of the first spring 502, the sealing action of the air inlet 2 is realized, and the storage environment of the exhaust gas sample is ensured, and when the sealing plug 5 moves, the stability of the movement of the sealing plug 5 can be ensured through the sliding guide function between the guide rod 501 and the air inlet 2.
The heat insulation plate 801 is fixed on the outer side of the heat dissipation plate 8 for protection, and through holes 802 are formed in the heat dissipation plate 8 and the heat insulation plate 801 at equal intervals to facilitate air flow.
Because tail gas directly gets into in the sampling bottle 1 through the calandria, so the tail gas temperature is higher, and the effect through heating panel 8 realizes the quick heat conduction radiating action of sampling bottle 1 this moment, cooperates the effect of through-hole 802, can make things convenient for the circulation of air to further with higher speed the radiating effect, the effect of thermal baffle 801 is deuterogamied, can effectively avoid the user to scald, guarantees the security of device.
The movable plate 10 is further provided with a sealing rubber gasket 1001 and a top rod 1002; the sealing rubber gasket 1001 is fixed on the outer side of the movable plate 10, and the sealing rubber gasket 1001 and the inner wall of the sampling bottle 1 are in contact with each other and slide to realize a sealing effect; the ejector rod 1002 is fixed on the lower end surface of the movable plate 10, the ejector rod 1002 is located right above the sliding rod 12, and the length of the ejector rod 1002 is greater than the sliding distance of the sliding rod 12; the sealing plate 14 and the pressure relief opening 7 are matched with each other to form a sealing mechanism, an elastic rope 15 is further fixed on the sealing plate 14, the other end of the elastic rope 15 is fixed on the sampling bottle 1, and meanwhile, the sealing plate 14 forms an elastic mechanism between the elastic rope 15 and the sampling bottle 1.
When tail gas enters the sampling bottle 1, the movable plate 10 moves downwards under the action of air pressure at the moment, and the extrusion effect on the second spring 9 is realized, when the movable plate 10 moves, the sealing effect of the sealing rubber gasket 1001 can ensure the sealing performance of the device and avoid leakage, and at the moment, the telescopic rod 11 contracts to ensure that the movable plate 10 does stable linear motion, the air pressure increases along with the increase of the gas in the sampling bottle 1, so that the movable plate 10 continuously moves downwards and simultaneously drives the ejector rod 1002 to move downwards, when the ejector rod 1002 is contacted with the sliding rod 12, the sliding rod 12 is stressed to move downwards, the sealing plate 14 is pulled to slide by the action of the connecting rope 13, when the sealing plate 14 is separated from the pressure relief opening 7, the sealing effect is relieved, so that the gas can be discharged through the pressure relief opening 7 to realize pressure relief, and further, the occurrence of pressure relief caused by overlarge pressure in the sampling bottle 1 is avoided, after atmospheric pressure is stable, at this moment under the elastic action of stretch cord 15 pulling closing plate 14 recovery normal position, realize the pressure release mouth 7 sealed can, guarantee the safe in utilization of device, when needs carry out tail gas detection, only need open outlet valve port 6 and can emit the tail gas sample, convenient detection.
The working principle is as follows: as shown in fig. 1-5, when the sampling device for detecting exhaust gas of an automobile is used, firstly, the connecting sleeve 3 is connected with the exhaust pipe of the automobile, the sealing function is realized by matching with the inflatable sealing gasket 301, after the connection is completed, the automobile exhaust enters the air inlet 2 through the connecting sleeve 3 and the guide pipe, at the moment, the sealing plug 5 is forced to be separated from the air inlet 2 under the action of the exhaust, the exhaust conveniently enters the sampling bottle 1 to be stored, after the sampling is completed, the sealing plug 5 can be restored to the original position under the action of the first spring 502, the sealing function of the air inlet 2 is realized, and the storage environment of the exhaust sample is ensured; when tail gas enters the sampling bottle 1, the movable plate 10 moves downwards under the action of air pressure, the air pressure increases along with the increase of gas in the sampling bottle 1, so that the movable plate 10 continuously moves downwards, when the ejector rod 1002 is in contact with the slide rod 12, the slide rod 12 is stressed to move downwards, the sealing plate 14 is pulled to slide under the action of the connecting rope 13, when the sealing plate 14 is separated from the pressure relief opening 7, the sealing effect is relieved, so that the gas can be discharged through the pressure relief opening 7 to realize pressure relief, the situation that the gas in the sampling bottle 1 is over-high in pressure and burst is caused is avoided, and after the air pressure is stable, the elastic effect of the elastic rope 15 enables the sealing plate 14 to recover to the original position, and the sealing of the pressure relief opening 7 is realized; and because tail gas directly gets into in the sampling bottle 1 through the calandria, so the tail gas temperature is higher, through the effect of heating panel 8 and through-hole 802, can realize the quick heat dissipation of device, cooperation heat insulating board 801's thermal-insulated effect can effectively avoid the condition that personnel scalded, guarantees the safe in utilization of device, when needs carry out the tail gas detection, only need open outlet valve mouth 6 and can emit the tail gas sample, the convenient detection, this is exactly this automobile inspection waste gas sampling device's theory of operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An automobile detection waste gas sampling device comprises a sampling bottle (1), wherein an air inlet (2) is formed in the upper end of the sampling bottle (1), the air inlet (2) is connected with a connecting sleeve (3) through a connecting pipe, the lower end of the air inlet (2) is matched with a sealing plug (5) to form a sealing mechanism, the sealing plug (5) is arranged in the sampling bottle (1), an air outlet valve port (6) is formed in the right side of the upper end of the sampling bottle (1), and a pressure relief port (7) is formed in the left side of the upper end of the sampling bottle (1);
it is characterized by also comprising:
the filter screen (4) is fixed in the connecting sleeve (3) to realize the solid-gas separation function;
the heat dissipation plate (8) is concentrically and equiangularly fixed on the outer side of the sampling bottle (1), a second spring (9) is further fixed in the sampling bottle (1), a movable plate (10) is fixed at the upper end of the second spring (9), the movable plate (10) is arranged in the sampling bottle (1), telescopic rods (11) are symmetrically fixed on the lower end face of the movable plate (10), and the lower end of each telescopic rod (11) is fixed on the sampling bottle (1);
the sliding rod (12) is connected to the sampling bottle (1) in a sliding mode, a connecting rope (13) is fixed to the upper end of the sliding rod (12), the other end of the connecting rope (13) is fixed to the sealing plate (14), and meanwhile the sealing plate (14) is connected to the sampling bottle (1) in a sliding mode.
2. The automotive inspection exhaust sampling device of claim 1, wherein: the connecting sleeve (3) is also provided with an inflatable sealing gasket (301) and an air bag (302);
the inflatable gasket (301) is fixed on the inner side of the connecting sleeve (3), and the inflatable gasket (301) is made of high-temperature-resistant elastic materials;
and the air bag (302) is connected with the inflatable sealing gasket (301) through a conduit to realize inflation.
3. The automotive inspection exhaust sampling device of claim 1, wherein: the sealing plug (5) is also provided with a guide rod (501) and a first spring (502);
the guide rods (501) are vertically and symmetrically fixed on the upper end surface of the sealing plug (5), and the guide rods (501) are connected to the air inlet (2) in a sliding manner;
the first spring (502) is fixed on the guide rod (501), the other end of the first spring (502) is fixed on the air inlet (2), and the guide rod (501) forms an elastic mechanism with the air inlet (2) through the first spring (502).
4. The automotive inspection exhaust sampling device of claim 1, wherein: the outer side of the heat dissipation plate (8) is further fixed with a heat insulation plate (801) for protection, and through holes (802) are formed in the heat dissipation plate (8) and the heat insulation plate (801) at equal intervals to facilitate air flow.
5. The automotive inspection exhaust sampling device of claim 1, wherein: the movable plate (10) is also provided with a sealing rubber gasket (1001) and a top rod (1002);
the sealing rubber gasket (1001) is fixed on the outer side of the movable plate (10), and the sealing rubber gasket (1001) and the inner wall of the sampling bottle (1) are in mutual contact and slide to realize a sealing effect;
the ejector rod (1002) is fixed on the lower end face of the movable plate (10), the ejector rod (1002) is located right above the sliding rod (12), and the length of the ejector rod (1002) is larger than the sliding distance of the sliding rod (12).
6. The automotive inspection exhaust sampling device of claim 1, wherein: the sealing plate (14) and the pressure relief opening (7) are matched with each other to form a sealing mechanism, an elastic rope (15) is further fixed on the sealing plate (14), the other end of the elastic rope (15) is fixed on the sampling bottle (1), and meanwhile the sealing plate (14) forms an elastic mechanism between the elastic rope (15) and the sampling bottle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220488988.0U CN216847090U (en) | 2022-03-08 | 2022-03-08 | Automobile inspection waste gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220488988.0U CN216847090U (en) | 2022-03-08 | 2022-03-08 | Automobile inspection waste gas sampling device |
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| Publication Number | Publication Date |
|---|---|
| CN216847090U true CN216847090U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220488988.0U Expired - Fee Related CN216847090U (en) | 2022-03-08 | 2022-03-08 | Automobile inspection waste gas sampling device |
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| CN (1) | CN216847090U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367897A (en) * | 2023-10-18 | 2024-01-09 | 南通仁隆科研仪器有限公司 | Self-sealing type coalbed methane sampling device |
-
2022
- 2022-03-08 CN CN202220488988.0U patent/CN216847090U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367897A (en) * | 2023-10-18 | 2024-01-09 | 南通仁隆科研仪器有限公司 | Self-sealing type coalbed methane sampling device |
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Granted publication date: 20220628 |