CN202305262U - Encapsulated coal sample sampler - Google Patents
Encapsulated coal sample sampler Download PDFInfo
- Publication number
- CN202305262U CN202305262U CN 201120411304 CN201120411304U CN202305262U CN 202305262 U CN202305262 U CN 202305262U CN 201120411304 CN201120411304 CN 201120411304 CN 201120411304 U CN201120411304 U CN 201120411304U CN 202305262 U CN202305262 U CN 202305262U
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- sampler barrel
- coal
- urceolus
- fixedly connected
- clutch
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Abstract
The utility model relates to an encapsulated coal sample sampler. The sampler comprises a coal feeding base, a sampling cylinder, an external cylinder, a combined drill, a clutch sheath, a sealed transmission shaft assembly, a quick connection device and a reducer union. The coal feeding base is connected with the front end of the sampling cylinder, the sampling cylinder is sleeved in the external cylinder, and the front end of the external cylinder is connected with the combined drill. A seal cartridge of the sealed transmission shaft assembly is in sealed connection in a screw hole at the bottom of the sampling cylinder through a left-hand screw thread. The whole sampler is connected to a drill stem through the reducer union, and when a drilling machine drives the drill stem to rotate reversely, under the unidirectional action of a driving clutch, a sealing head enters into a through hole at the lower surface of the coal feeding base to finish the works of sampling and sealing. When desorbing, the gas of the coal sample enters into a gas desorption device through the quick connection device at the tail end of a hollow shaft, thus, the underground site gas desorption test is performed. The encapsulated coal sample sampler can be widely used in the determination and detection process of gas content of coal beds in coal mines.
Description
Technical field
The utility model relates to a kind of coal sample ST, particularly about a kind of internal enclosed coal sample ST that is used to measure coal seam gas-bearing capacity.
Background technology
Coal seam gas-bearing capacity is that one of important parameter of situation is deposited in the tax of reflection coal-bed gas, is calculating coal-bed gas reserves, predicts [underground, carries out the important evidence that gas pumping designed and estimated coal seam coal and gas outburst risk.At present, the coal seam gas-bearing capacity assay method mainly contains indirect method and direct method.Indirect method is calculated coal seam gas-bearing capacity according to the parameters such as coal-bed gas pressure of actual measurement with the Lang Gemiuer formula.This method test period is longer, and cost is higher, the less employing of colliery scene.The main direct method that adopts in actual coal seam gas-bearing capacity is measured, direct method is to get ickings or coal core through boring, measures and calculate gas loss amount, coal seams gas discharging quantity and the residual gas amount of sampling process, this three's sum is a coal seam gas-bearing capacity.This method has the excessive shortcoming of gas amount loss, and especially when carrying out sampling depth greater than 30 meters drill hole sampling, sampling depth is big more, and it is long more to move back brill process coal sample exposure duration, and the gas loss amount is big more.Therefore how to reduce or calculate that accurately the gas loss amount is a problem demanding prompt solution.In addition, the desorption of mash gas speed of ickings is much larger than lump coal.It is very fast that ickings breaks away from the desorption rate at coal body initial stage, if can take out block coal sample, with the gas loss amount that greatly reduces sampling process, still, the domestic coal seam with outburst danger is generally all softer, is difficult to take out complete block coal sample.Though also developed the device that gas bearing capacity is measured in many direct samples both at home and abroad; But its sampling method and principle thereof do not have big breakthrough; The gas loss is serious in the sampling process; There is bigger error in the coal seam gas-bearing capacity measurement result that causes measuring, is unfavorable for the formulation of Firedamp precaution measures and effectively enforcement.
Summary of the invention
To the problems referred to above, the purpose of the utility model provides a kind of internal enclosed coal sample ST that can when measuring coal seam gas-bearing capacity, reduce gas loss amount in the sampling process.
For realizing above-mentioned purpose; The utility model is taked following technical scheme: a kind of internal enclosed coal sample ST, and it comprises into coal seat, a sampler barrel, a urceolus, a combined drill, a clutch coupling sheath, sealing driving-shaft assembly, a quick access device and a reducer union; Wherein, go into the coal seat and set into coal channel, the rear end of going into the coal seat is fixedly connected on the front end of sampler barrel; The front inner wall of sampler barrel also is provided with a circle concave station, be located on the concave station one have a central through hole support, around central through hole, some coals holes of crossing are set also on the support, press on the support and establish the bracket pressing sleeve that is fixedly connected with the sampler barrel inwall; Sampler barrel bottom centre place is provided with a screw; Be with the sampler barrel that has into the coal seat in the urceolus, the passage that formation is ventilated between urceolus and the sampler barrel, water flowing is used; The front end of urceolus is fixedly connected with combined drill; The rear end of urceolus is connected with the front end seam of clutch coupling sheath, is slidingly matched; The sealing driving-shaft assembly comprises that one is located in the tubular shaft in the carriage center through hole, the top seal of tubular shaft, and be provided with one with go into the corresponding seal head of coal seat lower surface, after the sampling, seal head cooperates with the lower surface of going into the coal seat, the upper end of formation sampler barrel seals; Tubular shaft axle body middle part is provided with a sealing shroud, and sealing shroud oppositely is screwed in the screw of sampler barrel bottom through the left-hand thread (LHT) on its cylindrical; Between seal head and sealing shroud, a plurality of rows pore and a spring bearer plate are set on the tubular shaft axle body; Between spring bearer plate and sealing shroud, a sheathed stage clip and an internal gland corresponding on the tubular shaft with the sampler barrel upper base surface, under the effect of stage clip, during sampling with sampling after, internal gland withstands on the upper surface place of sampler barrel bottom all the time; Below sealing shroud, a corresponding outer shutoff of lower surface bottom sampler barrel is set on the tubular shaft, after the sampling, outer shutoff cooperates with sampler barrel bottom lower surface, constitutes the lower end sealing of sampler barrel; The below of shutoff outside, a sheathed successively front bearing, is by dynamic clutch, an active clutch, a big stage clip and a rear bearing on the tubular shaft; Wherein, the cylindrical of front bearing is fixedly connected with the bottom of urceolus; Be fixedly connected with the rear end of urceolus by the front end of dynamic clutch, some jackscrew grooves that cooperate with clutch coupling sheath top top wire hole also are set on the front end cylindrical of dynamic clutch, the space is left in the jackscrew and the bottom of jackscrew groove that are screwed into wherein; With meshing naturally by dynamic clutch, its internal diameter is enclosed within on the tubular shaft through some keyways active clutch under the effect of big stage clip, slides before and after forming with tubular shaft: move after during counter-rotating, move ahead when just changeing; The cylindrical of rear bearing is fixedly connected with the bottom of clutch coupling sheath; Hollow the tip of the axis is fixedly connected with quick access device, and the quick access device end is provided with an air valve; The front end of reducer union is fixedly connected with the rear end of clutch coupling sheath.
Above-mentioned to go into the coal seat be the right cylinder that a top has flange, and the right cylinder upper surface is the conical surface that stands upside down, and lower surface is a upright conical surface, and two conical surface tops are gone into coal channel to logical thereby constitute; Corresponding with the lower surface of going into the coal seat, seal head is one to have the cone seal head of O-ring seal.
Above-mentioned sampler barrel upper base surface is a handstand conical surface, and lower surface is a upright conical surface; Corresponding with the sampler barrel upper base surface, internal gland is a handstand cone; Corresponding with sampler barrel bottom lower surface, outer shutoff is a upright cone.
Through the perforate pin, above-mentioned seal shaft top fixed connection and sealing head, seal shaft is fixedly connected spring bearer plate.
Above-mentionedly go into coal seat and sampler barrel, sampler barrel inwall and bracket pressing sleeve, urceolus and combined drill, seal shaft all is threaded with urceolus with outer shutoff and by dynamic clutch.
The cylindrical of above-mentioned front bearing all is to be fixedly connected through jackscrew with the cylindrical of urceolus and rear bearing with the clutch coupling sheath.
The utility model is owing to take above technical scheme; It has the following advantages: 1, the utility model is owing to adopt the internal enclosed sampling to shorten the time that coal sample exposes in the sampling process; Thereby reduced the gas loss amount of sampling process greatly, improved the accuracy of gas bearing capacity measured value.2, the utility model is owing to adopt upper end, lower end sealing sampler barrel to carry out desorption of mash gas; Need not to shift the coal sample in the sampler barrel in the desorption of mash gas test process; Directly connect stripping apparatus and carry out desorption of mash gas through quick access device; Thereby reduced gas loss in the down-hole desorb test process, helped accurately measuring gas bearing capacity.The utility model can be widely used in the mensuration and testing process of colliery coal seam gas-bearing capacity.
Description of drawings
Structural representation when Fig. 1 is the utility model sampling
Fig. 2 is the structural representation after the utility model sampling
Fig. 3 is the vertical view of the utility model combined drill
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is carried out detailed description.For narrating conveniently, hereinafter " on ", the upper and lower in D score or " preceding ", " back " and accompanying drawing is to consistent, still in use, device is horizontal use, " on " or the direction of " preceding " be towards the coal seam.
As shown in Figure 1, the utility model comprises into coal seat 1, a sampler barrel 2, a urceolus 3, a combined drill 4, a clutch coupling sheath 5, sealing driving-shaft assembly 6, a quick access device 7 and a reducer union 8.
The coal seat 1 of going into of the utility model is provided with into coal channel 101.The rear end of going into coal seat 1 is threaded with the front end of sampler barrel 2, and connected mode is not limited thereto.
The sampler barrel 2 opening parts below inwall of the utility model is provided with a circle concave station 201.Be located on the concave station 201 one have a central through hole 202 support 203, around central through hole 202, also be provided with some coals holes 204 of crossing on the support 203.Press on the support 203 to be provided with the bracket pressing sleeve 205 that is connected with sampler barrel 2 inner threads, connected mode is not limited thereto.The bottom centre of sampler barrel 2 is provided with a screw 206.
The urceolus 3 of the utility model in a tubular form, front end is threaded with combined drill 4, connected mode is not limited thereto, the open rearward end place then is provided with seam 301, is connected through the seam mode with the front end of clutch coupling sheath 5, is slidingly matched.In the middle of the urceolus 3 sheathed have into constituting between 2, two of the sampler barrels of coal seat 1 ventilate, passage 302 that water flowing is used.
The clutch coupling sheath 5 of the utility model in a tubular form, the front opening place is provided with and the corresponding seam 501 of urceolus 3 rear end seams 301.
The sealing driving-shaft assembly 6 of the utility model comprises that one is located in the tubular shaft 601 in support 203 central through holes 202, the top seal of tubular shaft 601, and be fixedly connected with a seal head 602 corresponding with going into coal seat 1 lower surface.After the sampling, seal head 602 with go into coal seat 1 lower surface 102 and cooperate, constitute the upper end sealing of sampler barrel 2.The axle body middle part of tubular shaft 601 is provided with a sealing shroud 603, and sealing shroud 603 oppositely is screwed in the screw 206 of sampler barrel 2 bottoms through the left-hand thread (LHT) on its cylindrical.Between seal head 602 and sealing shroud 603, the axle body of tubular shaft 601 is provided with a vent port 604 and the spring bearer plate 605 of some diameter 2～4mm.Between spring bearer plate 605 and sealing shroud 604, on the tubular shaft 601 a sheathed stage clip 606 and one with the corresponding internal gland 607 of sampler barrel 2 upper base surface 207.Under the effect of stage clip 606, during sampling and after the sampling, internal gland 607 withstands on upper surface 207 places of sampler barrel 2 bottoms all the time.Below sealing shroud 603, on the tubular shaft 601 fixing one with the corresponding outer shutoff 608 of sampler barrel 2 bottom lower surfaces 208, after the sampling, outer shutoff 608 cooperates with sampler barrel 2 bottom lower surfaces 208, the lower end of formation sampler barrel 2 seals (as shown in Figure 2).
The below of shutoff outside 608, a sheathed successively front bearing 609, is by dynamic clutch 610, an active clutch 611, one a big stage clip 612 and a rear bearing 613 on the tubular shaft 601.Wherein, the cylindrical of front bearing 609 is fixedly connected through jackscrew with the bottom of urceolus 3, and connected mode is not limited thereto.Be threaded by the rear end of the front end of dynamic clutch 610 with urceolus 3, connected mode also is not limited thereto.Some jackscrew grooves 614 that cooperate with clutch coupling sheath 5 top top wire holes also are set on the front end cylindrical of dynamic clutch 610; The space is left in the jackscrew and the bottom of jackscrew groove 614 that are screwed into wherein; Clutch coupling sheath 5 disconnects with urceolus 3 when preventing to reverse, and urceolus 3 can not rotate when guaranteeing 5 counter-rotatings of clutch coupling sheath.Active clutch 611 in the effect of big stage clip 612 down and meshing naturally by dynamic clutch 610; Its internal diameter is enclosed within on the tubular shaft 601 through two keyways 615; The number of keyway 615 can be three or more, slides thereby form front and back with tubular shaft 601: move after during counter-rotating, move ahead when just changeing.The cylindrical of rear bearing 613 is fixedly connected through jackscrew with the bottom of clutch coupling sheath 5, and connected mode is not limited thereto.The end of tubular shaft 601 is threaded with quick access device 7, and connected mode also is not limited thereto.The end of quick access device 7 is provided with an air valve 701, and before external desorption of mash gas equipment carried out desorption of mash gas, air valve 701 was in closed condition.
The front end of the utility model reducer union 8 is threaded with the rear end of clutch coupling sheath 5, and connected mode is not limited thereto.
In the foregoing description, as shown in Figure 1, going into coal seat 1 can be the right cylinder that flange is arranged at a top, and cylindrical lower surface 102 is a upright conical surface, and is corresponding with it, and seal head 602 is one the cone seal head of O-ring seal 616 to be arranged.
In the foregoing description, as shown in Figure 1, the upper base surface 207 of sampler barrel 2 can be the conical surface that stands upside down, and lower surface 208 can be a upright conical surface.Corresponding with sampler barrel 2 upper base surface 207, internal gland 607 is a handstand cone; Corresponding with sampler barrel 2 bottom lower surfaces 208, outer shutoff 608 is a upright cone.
In the foregoing description; As shown in Figure 3; The combined drill 4 that is arranged on urceolus 3 front ends can comprise that the drill headstock 401 of a tubular, the center of drill headstock 401 are provided with a center bit 402, is the center of circle with center bit 402; The same circumference of drill headstock 401 is provided with some bradawl heads 403, is provided with some bradawl heads 404 at the top of drill headstock 401 barrels.
In the foregoing description, as shown in Figure 1, seal shaft 601 tops can be fixedly connected spring bearer plates 605 through perforate pin 618 on seal shaft 601 axle bodies through perforate pin 617 fixed connection and sealing 602.
In the foregoing description, outer shutoff 608 can be fixed on the seal shaft 601 through internal thread, also can be weldingly fixed on the seal shaft 601.
The utility model is in use: first construction drill withdraws from drilling rod to predetermined depth, then the utility model is connected to rig and drilling rod through reducer union 8, sending into boring and carrying out spot sampling.At first; The drilling rod of rig just changes clockwise; Drive clutch coupling sheath 5 through reducer union 8 and rotate, clutch coupling sheath 5 drives urceolus 3 rotations through active clutch 611 with by dynamic clutch 610, and the center bit 402 that urceolus 3 drives again on the combined drill 4 takes out block coal sample from the coal seam; Bradawl head 403,404 is polished into the ickings less than 20mm with block coal sample again, and ickings gets in the sampler barrel 2 through the coal channel 101 of going into of going into coal seat 1.After the sampling, the drilling rod of rig some circles that reverse, the counter-rotating number of turns is greater than 15 circles; The anti-back buckle device has been housed on the drilling rod, active clutch 611 with broken away from by dynamic clutch 610, thereby break away from urceolus 3; Therefore, have only this moment active clutch 611 to drive tubular shaft 601 reverse rotations; Under the effect of the left-hand thread (LHT) on sealing shroud 603 cylindricals, tubular shaft 601 advances, seal head 602 with go into coal seat 1 lower surface 102102 and cooperate the upper end sealing of accomplishing sampler barrel 2; Simultaneously, outer shutoff 608 cooperates the lower end sealing of accomplishing sampler barrel 2 with sample bucket 2 bottom lower surfaces 208.Withdraw from drilling rod; The utility model is taken off from drilling rod, the air valve 701 on the quick access device 7 of seal shaft 601 ends is opened, and be connected with the desorption of mash gas equipment of outside; At this moment; Methane gas in the coal sample just gets in the axle through the vent port on the tubular shaft 601 604, then imports outside desorption of mash gas equipment, thereby carries out the on-the-spot desorption of mash gas test in down-hole.
Above-mentioned each embodiment only is used to explain the utility model; Wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; Every equivalents of on the basis of the utility model technical scheme, carrying out and improvement all should not got rid of outside the protection domain of the utility model.
Claims (10)
1. internal enclosed coal sample ST is characterized in that: it comprises into coal seat, a sampler barrel, a urceolus, a combined drill, a clutch coupling sheath, sealing driving-shaft assembly, a quick access device and a reducer union; Wherein, saidly go into the coal seat and set into coal channel, the said rear end of going into the coal seat is fixedly connected on the front end of said sampler barrel; The front inner wall of said sampler barrel also is provided with a circle concave station; Be located on the said concave station one have a central through hole support; Around said central through hole, some coals holes of crossing also are set on the support, press on the said support and establish the bracket pressing sleeve that is fixedly connected with said sampler barrel inwall; Said sampler barrel bottom centre place is provided with a screw; Be with in the said urceolus and have said said sampler barrel of going into the coal seat, constitute between said urceolus and the said sampler barrel ventilate, passage that water flowing is used; The front end of said urceolus is fixedly connected with said combined drill; The rear end of said urceolus is connected with the front end seam of said clutch coupling sheath, is slidingly matched; Said sealing driving-shaft assembly comprises that one is located in the tubular shaft in the said carriage center through hole; The top seal of said tubular shaft; And be provided with one and go into the corresponding seal head of coal seat lower surface with said; After the sampling, said seal head cooperates with said lower surface of going into the coal seat, constitutes the upper end sealing of said sampler barrel; Said tubular shaft axle body middle part is provided with a sealing shroud, and said sealing shroud oppositely is screwed in the screw of said sampler barrel bottom through the left-hand thread (LHT) on its cylindrical; Between said seal head and said sealing shroud, a plurality of rows pore and a spring bearer plate are set on the said tubular shaft axle body; Between said spring bearer plate and said sealing shroud; On the said tubular shaft a sheathed stage clip and one with the corresponding internal gland of said sampler barrel upper base surface; Under the effect of said stage clip, during sampling and after the sampling, said internal gland withstands on the upper surface place of said sampler barrel bottom all the time; Below said sealing shroud, a corresponding outer shutoff of lower surface bottom said sampler barrel is set on the said tubular shaft, after the sampling, said outer shutoff cooperates with said sampler barrel bottom lower surface, constitutes the lower end sealing of said sampler barrel; Outside said shutoff below, a sheathed successively front bearing, is by dynamic clutch, an active clutch, a big stage clip and a rear bearing on the said tubular shaft; Wherein, the cylindrical of said front bearing is fixedly connected with the bottom of said urceolus; Saidly be fixedly connected with the rear end of said urceolus by the front end of dynamic clutch; Said the jackscrew groove that some and said clutch coupling sheath top top wire hole cooperates is set also on the front end cylindrical of dynamic clutch, the space is left in the jackscrew and the bottom of said jackscrew groove that are screwed into wherein; With said meshing naturally by dynamic clutch, its internal diameter is enclosed within on the said tubular shaft through some keyways said active clutch under the effect of said big stage clip, slides before and after forming with said tubular shaft: move after during counter-rotating, move ahead when just changeing; The cylindrical of said rear bearing is fixedly connected with the bottom of said clutch coupling sheath; Said hollow the tip of the axis is fixedly connected with said quick access device, and said quick access device end is provided with an air valve; The front end of said reducer union is fixedly connected with the rear end of said clutch coupling sheath.
2. a kind of internal enclosed coal sample ST as claimed in claim 1; It is characterized in that: said to go into the coal seat be the right cylinder that a top has flange, and the right cylinder upper surface is the conical surface that stands upside down, and lower surface is a upright conical surface; Two conical surface tops are to logical, thereby constitute the said coal channel of going into; Corresponding with said lower surface of going into the coal seat, said seal head is one to have the cone seal head of O-ring seal.
3. a kind of internal enclosed coal sample ST as claimed in claim 1, it is characterized in that: said sampler barrel upper base surface is a handstand conical surface, and lower surface is a upright conical surface; Corresponding with said sampler barrel upper base surface, said internal gland is a handstand cone; Corresponding with said sampler barrel bottom lower surface, said outer shutoff is a upright cone.
4. a kind of internal enclosed coal sample ST as claimed in claim 2, it is characterized in that: said sampler barrel upper base surface is a handstand conical surface, and lower surface is a upright conical surface; Corresponding with said sampler barrel upper base surface, said internal gland is a handstand cone; Corresponding with said sampler barrel bottom lower surface, said outer shutoff is a upright cone.
5. like each described a kind of internal enclosed coal sample ST of claim 1～4, it is characterized in that: through the perforate pin, said seal shaft top is fixedly connected said seal head, and said seal shaft is fixedly connected said spring bearer plate.
6. like each described a kind of internal enclosed coal sample ST of claim 1～4; It is characterized in that: saidly go into coal seat and said sampler barrel; Said sampler barrel inwall and said bracket pressing sleeve; Said urceolus and said combined drill, said seal shaft and said outer shutoff and said all is threaded with said urceolus by dynamic clutch.
7. a kind of internal enclosed coal sample ST as claimed in claim 5; It is characterized in that: saidly go into coal seat and said sampler barrel; Said sampler barrel inwall and said bracket pressing sleeve; Said urceolus and said combined drill, said seal shaft and said outer shutoff and said all is threaded with said urceolus by dynamic clutch.
8. like claim 1 or 2 or 3 or 4 or 7 described a kind of internal enclosed coal sample STs, it is characterized in that: the cylindrical of said front bearing all is to be fixedly connected through jackscrew with the cylindrical of said urceolus and said rear bearing with said clutch coupling sheath.
9. a kind of internal enclosed coal sample ST as claimed in claim 5 is characterized in that: the cylindrical of said front bearing all is to be fixedly connected through jackscrew with the cylindrical of said urceolus and said rear bearing with said clutch coupling sheath.
10. a kind of internal enclosed coal sample ST as claimed in claim 6 is characterized in that: the cylindrical of said front bearing all is to be fixedly connected through jackscrew with the cylindrical of said urceolus and said rear bearing with said clutch coupling sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120411304 CN202305262U (en) | 2011-10-25 | 2011-10-25 | Encapsulated coal sample sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120411304 CN202305262U (en) | 2011-10-25 | 2011-10-25 | Encapsulated coal sample sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305262U true CN202305262U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120411304 Expired - Fee Related CN202305262U (en) | 2011-10-25 | 2011-10-25 | Encapsulated coal sample sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305262U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115797A (en) * | 2013-02-28 | 2013-05-22 | 中国矿业大学 | Coal mine sealing and sampling device and application method thereof |
| WO2015077980A1 (en) * | 2013-11-29 | 2015-06-04 | 益生生技开发股份有限公司 | Replaceable sampling assembly, and sampling device having same |
| CN104931383A (en) * | 2015-05-05 | 2015-09-23 | 中煤科工集团西安研究院有限公司 | Coal bed gas and methane gas coring and desorption measurement system and method |
| CN106441981A (en) * | 2016-08-30 | 2017-02-22 | 中煤科工集团重庆研究院有限公司 | Coal sample drilling sealing detection device |
| CN110984980A (en) * | 2019-12-25 | 2020-04-10 | 重庆大学 | Coal mine underground drilling fixed-point airtight sampling device |
| CN112924223A (en) * | 2021-03-25 | 2021-06-08 | 中国矿业大学 | Drilling-sampling integrated device for fixed-point closed sampling of coal seam |
-
2011
- 2011-10-25 CN CN 201120411304 patent/CN202305262U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115797A (en) * | 2013-02-28 | 2013-05-22 | 中国矿业大学 | Coal mine sealing and sampling device and application method thereof |
| CN103115797B (en) * | 2013-02-28 | 2015-07-29 | 中国矿业大学 | A kind of colliery sealed sampling device and using method thereof |
| WO2015077980A1 (en) * | 2013-11-29 | 2015-06-04 | 益生生技开发股份有限公司 | Replaceable sampling assembly, and sampling device having same |
| CN104931383A (en) * | 2015-05-05 | 2015-09-23 | 中煤科工集团西安研究院有限公司 | Coal bed gas and methane gas coring and desorption measurement system and method |
| CN106441981A (en) * | 2016-08-30 | 2017-02-22 | 中煤科工集团重庆研究院有限公司 | Coal sample drilling sealing detection device |
| CN106441981B (en) * | 2016-08-30 | 2019-01-29 | 中煤科工集团重庆研究院有限公司 | Coal sample drills through package seal checker |
| CN110984980A (en) * | 2019-12-25 | 2020-04-10 | 重庆大学 | Coal mine underground drilling fixed-point airtight sampling device |
| CN112924223A (en) * | 2021-03-25 | 2021-06-08 | 中国矿业大学 | Drilling-sampling integrated device for fixed-point closed sampling of coal seam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20151025 |
|
| EXPY | Termination of patent right or utility model |