CN114659828B - Fixed point pressure maintaining sampling device for coal mine underground coal seam gas content determination - Google Patents
Fixed point pressure maintaining sampling device for coal mine underground coal seam gas content determination Download PDFInfo
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- CN114659828B CN114659828B CN202210271003.3A CN202210271003A CN114659828B CN 114659828 B CN114659828 B CN 114659828B CN 202210271003 A CN202210271003 A CN 202210271003A CN 114659828 B CN114659828 B CN 114659828B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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Abstract
The invention discloses a fixed point pressure maintaining sampling device for coal mine underground coal seam gas content determination, which comprises: a flexible drill rod which is power-transmitted by an external driving system; the connecting sleeve is connected to the tail part of the flexible drill rod; the water driving mechanism is arranged in the connecting sleeve and is provided with an output end capable of rotating around the central axis of the water driving mechanism so as to drive the drill bit sleeve to rotate, a drill bit is arranged at one end of the drill bit sleeve, at least two drill bit holes are formed in the drill bit in a penetrating manner, and after the drill bit is used for drilling to a specified position, a coal sample is collected through the drill bit holes; and the sampling mechanism at least comprises a sampling bin and a closed pressure maintaining mechanism, wherein the sampling bin is fixed in the drill bit sleeve and is used for collecting the coal sample from the drill bit hole, and the closed pressure maintaining mechanism can seal the periphery of the sampling bin.
Description
Technical Field
The invention relates to the technical field of coal mine underground coal seam gas content measurement and sampling, in particular to a fixed point pressure maintaining sampling device used in the coal seam gas content measurement by utilizing directional long drilling.
Background
The method for testing the gas content can be divided into a direct method and an indirect method 2, wherein the direct method is to firstly sample a coal sample, then directly measure the gas content of a coal bed by adopting a desorption method, the accuracy of the method depends on the exposure time of the coal sample in the sampling process and whether the sampling site is accurate, in order to ensure the accuracy of the sampling site, directional drilling is often carried out by using drilling equipment, then the drilling equipment is withdrawn and the sampling equipment is lowered into the sampling equipment, so that fixed-point sampling is carried out by using the sampling equipment, and the problems of low sampling efficiency, long exposure time of the coal sample, gas escape and the like are caused.
Therefore, it is necessary to provide a fixed-point pressure-maintaining sampling device for measuring the gas content in the coal seam of the coal mine to solve the above problems.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: colliery is coal seam gas content survey fixed point pressurize sampling device in pit includes:
a flexible drill rod which is power-transmitted by an external driving system;
the connecting sleeve is connected to the tail part of the flexible drill rod;
the water driving mechanism is arranged in the connecting sleeve and is provided with an output end capable of rotating around the central axis of the water driving mechanism so as to drive the drill bit sleeve to rotate, a drill bit is arranged at one end of the drill bit sleeve, at least two drill bit holes penetrate through the drill bit, and after the drill bit is used for drilling to a specified position, a coal sample is collected through the drill bit holes; and
the sampling mechanism at least comprises a sampling bin and a closed pressure maintaining mechanism, wherein the sampling bin is fixed in the drill bit sleeve and used for collecting coal samples from the drill bit hole, and the closed pressure maintaining mechanism can seal the periphery of the sampling bin.
Further, preferably, the closed pressure maintaining mechanism comprises a bidirectional flow limiting head, and the bidirectional flow limiting head is connected with the drill bit by adopting a plurality of first springs and is blocked on the drill bit hole;
the bidirectional flow limiting head is further connected with the sliding ring through a second spring, the sliding ring slides in the inner wall of the drill bit sleeve in a limiting mode, a plurality of sampling holes used for assisting in sampling are formed in the circumferential array of the drill bit sleeve, and in the initial stage, the sampling holes can be plugged by the sliding ring.
Further, preferably, the slip ring is connected to the inner wall of the bit holder by a third spring.
Further, as preferred, the bidirectional current limiting head comprises a first intercepting net and a second intercepting net which are symmetrically arranged and used for intercepting coal blocks, a conical groove is fixed between the first intercepting net and the second intercepting net, an opening of one side of the conical groove facing the direction of the drill bit hole is larger than that of the other side of the conical groove, a sealing plate is arranged in the conical groove in a sliding mode, and the sealing plate is connected with the second intercepting net through a fourth spring.
Further, preferably, the water driving mechanism comprises a rotor which is rotatably arranged in a stator, the stator is arranged in the inner wall of the connecting sleeve and can drive the rotor to rotate when the flushing liquid flows through a gap between the rotor and the stator;
the output of rotor is universal articulated with the transmission shaft, the other end of transmission shaft is fixed with the driving disc, the driving disc links to each other with the drill bit cover is sealed fixed, be provided with the control valve on the driving disc to with flush fluid water conservancy diversion to two-way current-limiting head position department, thereby see out the drill bit hole with the flush fluid.
Further, as preferred, it is provided with the second drain pipe to link up on the drill bit cover, the second drain pipe is located the transmission disc and is close to transmission shaft one side, be provided with valve body two in the second drain pipe, and when utilizing the sampling mechanism sample, valve body two is opened, and the control valve is closed.
Further, as preferred, the drill bit sleeve is provided with a first liquid outlet pipe in a penetrating mode, the first liquid outlet pipe is located on one side, close to the transmission shaft, of the transmission disc, a first valve body is arranged in the first liquid outlet pipe, a hydraulic cylinder is further fixed to the outer portion of the drill bit sleeve in the radial direction, the hydraulic cylinder is communicated with the first liquid outlet pipe, and a hydraulic head is arranged in the hydraulic cylinder in a sliding mode.
Further, as preferred, the one end in sample storehouse is for sealing the form, and the other end is fixed with the closing disc, a plurality of logical grooves have been seted up on the closing disc, it is provided with sealed disc to lead to the inslot rotation, sealed disc has rotary power.
Further, as preferred, flexible drilling rod includes a plurality of articulated universal joint in proper order, and is a plurality of universal joint sets up in the flexible cover, one side of flexible cover forms through screw thread sunken, and the other end forms through threaded connection head, screw thread sunken department is provided with the check valve, threaded connection head is used for linking to each other with the spread groove, the fixed embedding of spread groove is in the adapter sleeve.
Compared with the prior art, the invention provides a fixed-point pressure maintaining sampling device for measuring the gas content of an underground coal seam of a coal mine, which has the following beneficial effects:
in the embodiment of the invention, the control valve is arranged on the transmission disc so as to guide the flushing liquid to the position of the bidirectional flow limiting head when no sample is taken, and the flushing liquid is utilized to push the sealing plate to be far away from the first interception net so that the flushing liquid is sent out of a drill hole, thereby effectively realizing the cooling of the drill; and then
When the drill bit takes a sample, flush fluid stops flowing to the drill bit hole direction this moment, partial coal sample moves and promotes the second interception net in the drill bit hole under the weight on bit effect and makes it break away from the drill bit hole, and then make the coal sample get into in the drill bit cover, and, the sliding ring is promoted thereupon, partial coal sample gets into in the drill bit cover from the sampling hole, thereby realize the quick sample to the coal sample, and then the realization combines together drilling equipment and sampling equipment, realize the fixed point sample at the in-process that creeps into, so probably save the step of changing equipment, thereby the lifting efficiency, and direct sample after the drilling can improve the sample precision, and simultaneously, the in-process that the drilling rod withdrawed is accomplished in the sample has realized airtight pressurize, be favorable to the accurate survey to coal seam gas content.
Drawings
FIG. 1 is a schematic view of the overall structure of a fixed-point pressure-maintaining sampling device for measuring the gas content in an underground coal seam of a coal mine;
FIG. 2 is a schematic structural diagram of a water driving mechanism and a sampling mechanism in a fixed-point pressure maintaining sampling device for measuring the gas content of an underground coal seam of a coal mine;
FIG. 3 is a schematic structural diagram of a closed pressure maintaining mechanism in a fixed point pressure maintaining sampling device for measuring the gas content in an underground coal seam of a coal mine;
FIG. 4 is a schematic structural view of a bidirectional flow-limiting head in a fixed-point pressure-maintaining sampling device for measuring the gas content in an underground coal seam of a coal mine;
FIG. 5 is a schematic structural diagram of a sealing plate in a fixed-point pressure-maintaining sampling device for measuring the gas content in an underground coal seam of a coal mine;
in the figure: 1. a universal joint; 2. a one-way valve; 3. a connector; 4. a flexible sleeve; 5. connecting sleeves; 6. connecting grooves; 7. a water drive mechanism; 8. a bit sleeve; 9. a sampling mechanism; 10. a drill bit; 11. drilling a drill bit hole; 12. a righting frame; 13. a first liquid outlet pipe; 14. a hydraulic cylinder; 15. a hydraulic head; 16. a second liquid outlet pipe; 17. a sampling hole; 71. a rotor; 72. a stator; 73. a drive shaft; 74. a drive plate; 75. a control valve; 91. sampling a bin; 92. a closing disk; 93. sealing the pressure maintaining mechanism; 931. a bidirectional flow limiting head; 932. a first spring; 933. a second spring; 934. a slip ring; 935. a third spring; 9311. a first interception net; 9312. a second interception net; 9313. a conical groove; 9314; sealing plates; 9315. a fourth spring; 921. a tray body; 922. a through groove; 923. and sealing the disc.
Detailed Description
Referring to fig. 1 to 5, the present invention provides a fixed point pressure maintaining sampling device for measuring the gas content in the coal seam under the coal mine, comprising:
the flexible drill rod is driven by an external driving system to carry out power transmission;
the connecting sleeve 5 is connected to the tail part of the flexible drill rod;
the water driving mechanism 7 is arranged in the connecting sleeve 5, the water driving mechanism 7 is provided with an output end capable of rotating around the central axis of the water driving mechanism so as to drive the drill bit sleeve 8 to rotate, one end of the drill bit sleeve 8 is provided with a drill bit 10, at least two drill bit holes 11 penetrate through the drill bit 10, and after the drill bit is used for drilling to a specified position, a coal sample can be collected through the drill bit holes 11; and
the sampling mechanism 9, the sampling mechanism 9 includes sample storehouse 91 and airtight pressurize mechanism 93 at least, wherein, the sample storehouse 91 is fixed in the drill bit cover 8 for collect the coal sample from the drill bit hole 11, airtight pressurize mechanism 93 can seal the periphery in sample storehouse 91.
That is to say, in this embodiment, to bore equipment and sampling device and combine together, realize the fixed point sample at the in-process that creeps into, so can save the step of changing the equipment to raise the efficiency, and the direct sample after creeping into can improve the sampling precision, simultaneously, accomplish the in-process that the drilling rod withdrawed at the sample and realized airtight pressurize, be favorable to the accurate survey to coal seam gas content.
In this embodiment, as shown in fig. 2 and 3, the sealing and pressure-maintaining mechanism 93 includes a bidirectional flow-limiting head 931, wherein the bidirectional flow-limiting head 931 is connected to the drill 10 by a plurality of first springs 932 and blocks the drill hole 11;
bidirectional flow limiting head 931 is still connected with slip ring 934 by adopting a second spring, slip ring 934 is limited to slide in the inner wall of drill bit sleeve 8, a plurality of sampling holes 17 used for auxiliary sampling are arranged in the circumferential array on drill bit sleeve 8, and in the initial stage, sampling holes 17 can be plugged by slip ring 934.
In addition, the slip ring 934 is connected to the inner wall of the bit housing 8 by a third spring 935.
Further, as shown in fig. 4, the bidirectional flow limiting head 931 includes a first interception net 9311 and a second interception net 9312 which are symmetrically arranged and are used for intercepting the coal, a tapered groove 9313 is fixed between the first interception net 9311 and the second interception net 9312, an opening of the tapered groove 9313 on one side facing the drill hole 11 is larger than an opening of the tapered groove 9313 on the other side, a sealing plate 9314 is slidably arranged in the tapered groove 9313, and the sealing plate 9314 is connected with the second interception net 9312 by a fourth spring.
When the drill bit takes a sample, the flushing liquid stops flowing to the direction of the drill bit hole at the moment, part of the coal sample moves towards the drill bit hole under the action of the bit pressure and pushes the second interception net 9312 to be separated from the drill bit hole, so that the coal sample enters the drill bit sleeve 8, the sliding ring is pushed along with the coal sample, and part of the coal sample enters the drill bit sleeve 8 from the sampling hole 17, so that the quick sampling is realized, and the coal sample can be collected again by the sampling bin after being sampled.
In this embodiment, as shown in fig. 2, the water driving mechanism 7 includes a rotor 71 rotatably disposed in a stator 72 disposed in the inner wall of the connecting sleeve 5 and capable of driving the rotor to rotate when the flushing liquid flows through the gap between the rotor and the stator;
the output of rotor 71 is universal articulated with transmission shaft 73, the other end of transmission shaft 73 is fixed with drive plate 74, drive plate 74 and drill bit cover 8 are sealed fixed continuous, be provided with control valve 75 on the drive plate 74 to with the washing liquid water conservancy diversion to two-way restriction head 931 position department, thereby see the drilling bit hole 11 with the washing liquid, that is to say, when not taking a sample, utilize the washing liquid to promote sealing plate 9314, make it keep away from first washing liquid interception net 9311, make the drilling bit hole 11 of seeing off, thereby can effectual realization to the cooling of drill bit.
And a second liquid outlet pipe 16 is arranged on the drill bit sleeve 8 in a penetrating manner, the second liquid outlet pipe 16 is positioned on one side, close to the transmission shaft 73, of the transmission disc 74, a second valve body is arranged in the second liquid outlet pipe 16, and when the sampling mechanism 9 is used for sampling, the second valve body is opened, and the control valve 75 is closed.
At this time, the washing liquid is discharged from the position of the second liquid outlet pipe 16, so that the coal sample can enter the drill bit sleeve 8 from the drill bit hole.
In a preferred embodiment, a first liquid outlet pipe 13 is arranged on the bit sleeve 8 in a penetrating manner, the first liquid outlet pipe 13 is positioned on one side of the transmission disc 74 close to the transmission shaft 73, a first valve body is arranged in the first liquid outlet pipe 13, a hydraulic cylinder 14 is further fixed on the outer portion of the bit sleeve 8 in the radial direction, the hydraulic cylinder 14 is communicated with the first liquid outlet pipe 13, a hydraulic head 15 is slidably arranged in the hydraulic cylinder 14, and hydraulic pressure can be driven by injecting washing liquid into the hydraulic cylinder 14.
In this embodiment, as shown in fig. 5, the one end of sample storehouse 91 is for sealing the form, and the other end is fixed with and seals dish 92, a plurality of logical grooves 922 have been seted up on sealing dish 92, it is provided with sealed disc 923 to lead to the rotation in the groove 922, sealed disc 923 has rotary power.
That is to say, in this embodiment, on the one hand, the sampling cabin can be used to realize sampling sealing pressure maintaining, and on the other hand, the sealing pressure maintaining mechanism 93 can also be used to realize sealing pressure maintaining outside the sampling cabin, thereby realizing double-layer sealing pressure maintaining.
In this embodiment, flexible drilling rod includes a plurality of articulated universal joint 1 in proper order, and is a plurality of universal joint 1 sets up in flexible cover 4, one side of flexible cover 4 forms through screw thread sunken, and the other end forms through threaded connection head 3, screw thread sunken department is provided with check valve 2, threaded connection head 3 is used for linking to each other with spread groove 6, spread groove 6 is fixed to be imbedded in adapter sleeve 5.
In specific implementation, when a sample is not taken, the second valve body is closed, the control valve 75 is opened, the flushing liquid is guided to the position of the bidirectional flow limiting head 931, the flushing liquid pushes the sealing plate 9314 to be far away from the first interception net 9311, and the flushing liquid is sent out of the drill hole 11, so that the drill can be effectively cooled; while
When the drill bit samples, the second valve body is opened, the control valve 75 is closed, at the moment, flushing liquid stops flowing towards the direction of the drill bit hole, part of the coal sample moves towards the drill bit hole under the action of the bit pressure and pushes the second interception net 9312 to be separated from the drill bit hole, the coal sample enters the drill bit sleeve 8, the sliding ring is pushed along with the coal sample, part of the coal sample enters the drill bit sleeve 8 from the sampling hole 17, rapid sampling is achieved, drilling equipment and sampling equipment are combined, fixed-point sampling is achieved in the drilling process, the equipment replacing step can be saved, efficiency is improved, direct sampling after drilling can improve sampling precision, meanwhile, closed pressure maintaining is achieved in the process of sampling and withdrawing the drill rod, and accurate determination of coal bed gas content is facilitated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (6)
1. Colliery is fixed point pressurize sampling device of coal seam gas content survey in pit, its characterized in that: the method comprises the following steps:
a flexible drill rod which is power-transmitted by an external driving system;
the connecting sleeve (5) is connected to the tail part of the flexible drill rod;
the water driving mechanism (7) is arranged in the connecting sleeve (5), the water driving mechanism (7) is provided with an output end capable of rotating around the central axis of the water driving mechanism so as to drive the drill bit sleeve (8) to rotate, one end of the drill bit sleeve (8) is provided with a drill bit (10), at least two drill bit holes (11) are formed in the drill bit (10) in a penetrating manner, and after the drill bit is used for drilling to a specified position, a coal sample is collected through the drill bit holes (11);
the sampling mechanism (9) at least comprises a sampling bin (91) and a closed pressure maintaining mechanism (93), wherein the sampling bin (91) is fixed in the drill bit sleeve (8) and used for collecting coal samples from the drill bit hole (11), and the closed pressure maintaining mechanism (93) can seal the periphery of the sampling bin (91);
the sealing pressure maintaining mechanism (93) comprises a bidirectional flow limiting head (931), and the bidirectional flow limiting head (931) is connected with the drill bit (10) through a plurality of first springs (932) and is plugged on the drill bit hole (11);
the bidirectional flow limiting head (931) is further connected with a sliding ring (934) through a second spring, the sliding ring (934) slides in the inner wall of the drill bit sleeve (8) in a limiting mode, a plurality of sampling holes (17) used for assisting sampling are formed in the drill bit sleeve (8) in a circumferential array mode, and in the initial stage, the sampling holes (17) can be plugged by the sliding ring (934);
the bidirectional flow limiting head (931) comprises a first interception net (9311) and a second interception net (9312) which are symmetrically arranged and used for intercepting coal blocks, a conical groove (9313) is fixed between the first interception net (9311) and the second interception net (9312), an opening of one side of the conical groove (9313) facing the direction of the drill bit hole (11) is larger than an opening of the other side of the conical groove, a sealing plate (9314) is further arranged in the conical groove (9313) in a sliding mode, and the sealing plate (9314) is connected with the second interception net (9312) through a fourth spring;
the water driving mechanism (7) comprises a rotor (71) which is rotatably arranged in a stator (72), the stator is arranged in the inner wall of the connecting sleeve (5), and the rotor can be driven to rotate when flushing liquid flows through a gap between the rotor and the stator;
the output end of the rotor (71) is hinged with the transmission shaft (73) in a universal mode, a transmission disc (74) is fixed to the other end of the transmission shaft (73), the transmission disc (74) is fixedly connected with the drill bit sleeve (8) in a sealing mode, and a control valve (75) is arranged on the transmission disc (74) so that the flushing liquid can be guided to the position of the bidirectional flow limiting head (931) and then sent out of the drill bit hole (11).
2. The coal mine underground coal seam gas content determination fixed-point pressure maintaining sampling device according to claim 1, characterized in that: the slip ring (934) is also connected with the inner wall of the drill bit sleeve (8) by a third spring (935).
3. The coal mine underground coal seam gas content determination fixed-point pressure maintaining sampling device according to claim 1, characterized in that: link up on drill point cover (8) and be provided with second drain pipe (16), second drain pipe (16) are located driving disc (74) and are close to transmission shaft (73) one side, be provided with valve body two in second drain pipe (16), and when utilizing sampling mechanism (9) to take a sample, valve body two is opened, and control valve (75) are closed.
4. The coal mine underground coal seam gas content determination fixed-point pressure-maintaining sampling device according to claim 1, characterized in that: the drill bit sleeve is characterized in that a first liquid outlet pipe (13) is arranged on the drill bit sleeve (8) in a penetrating mode, the first liquid outlet pipe (13) is located on one side, close to a transmission shaft (73), of a transmission disc (74), a valve body I is arranged in the first liquid outlet pipe (13), a hydraulic cylinder (14) is further fixed on the outer portion of the drill bit sleeve (8) in the radial direction, the hydraulic cylinder (14) is communicated with the first liquid outlet pipe (13), and a hydraulic head (15) is arranged in the hydraulic cylinder (14) in a sliding mode.
5. The coal mine underground coal seam gas content determination fixed-point pressure maintaining sampling device according to claim 1, characterized in that: the one end in sample storehouse (91) is for sealing the form, and the other end is fixed with and seals dish (92), a plurality of logical grooves (922) have been seted up on sealing dish (92), it is provided with sealed disc (923) to rotate in logical groove (922), sealed disc (923) have rotational power.
6. The coal mine underground coal seam gas content determination fixed-point pressure maintaining sampling device according to claim 1, characterized in that: the flexible drilling rod comprises a plurality of sequentially hinged universal joints (1) and a plurality of universal joints (1) arranged in a flexible sleeve (4), one side of the flexible sleeve (4) forms a through type thread recess, the other end of the flexible sleeve forms a through type thread connector (3), the thread recess is provided with a one-way valve (2), the thread connector (3) is used for being connected with a connecting groove (6), and the connecting groove (6) is fixedly embedded in a connecting sleeve (5).
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| CN202210271003.3A CN114659828B (en) | 2022-03-18 | 2022-03-18 | Fixed point pressure maintaining sampling device for coal mine underground coal seam gas content determination |
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| CN115343115B (en) * | 2022-08-30 | 2023-07-21 | 内蒙古自治区环境监测总站呼伦贝尔分站 | Sediment layered sampling equipment for lake water ecological monitoring |
| CN115824701B (en) * | 2022-12-22 | 2023-08-15 | 太原理工大学 | Impact type coal seam drilling fixed-point nondestructive sampling device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2336067A1 (en) * | 2009-11-09 | 2010-04-07 | Universidad De Oviedo | Device and method for the extraction, transportation and testing of gases in soft rock samples (Machine-translation by Google Translate, not legally binding) |
| CN106596174A (en) * | 2016-12-14 | 2017-04-26 | 中煤科工集团西安研究院有限公司 | Pressure-maintaining fixed-point sealed collecting method for underground coal mine nearly-horizontal long-distance coal sample |
| CN208330352U (en) * | 2018-06-20 | 2019-01-04 | 河南理工大学 | A kind of closed coal sample collection device of pressure maintaining |
| CN110031255A (en) * | 2019-05-14 | 2019-07-19 | 河南理工大学 | Low-temperature negative-pressure coal sample coal seam gas-bearing capacity spot sampling system and sampling method |
| CN111579314A (en) * | 2020-05-25 | 2020-08-25 | 平顶山天安煤业股份有限公司 | Deep hole airtight pressure maintaining sampler for coal mine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210239667A1 (en) * | 2018-08-20 | 2021-08-05 | Yale University | Shoulder mountable real-time air quality measurement device and air quality device calibration system |
-
2022
- 2022-03-18 CN CN202210271003.3A patent/CN114659828B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2336067A1 (en) * | 2009-11-09 | 2010-04-07 | Universidad De Oviedo | Device and method for the extraction, transportation and testing of gases in soft rock samples (Machine-translation by Google Translate, not legally binding) |
| CN106596174A (en) * | 2016-12-14 | 2017-04-26 | 中煤科工集团西安研究院有限公司 | Pressure-maintaining fixed-point sealed collecting method for underground coal mine nearly-horizontal long-distance coal sample |
| CN208330352U (en) * | 2018-06-20 | 2019-01-04 | 河南理工大学 | A kind of closed coal sample collection device of pressure maintaining |
| CN110031255A (en) * | 2019-05-14 | 2019-07-19 | 河南理工大学 | Low-temperature negative-pressure coal sample coal seam gas-bearing capacity spot sampling system and sampling method |
| CN111579314A (en) * | 2020-05-25 | 2020-08-25 | 平顶山天安煤业股份有限公司 | Deep hole airtight pressure maintaining sampler for coal mine |
Non-Patent Citations (2)
| Title |
|---|
| 井下长距离定点保压密闭煤层瓦斯含量测定取样技术;李泉新等;《煤炭科学技术》;20170715(第07期);全文 * |
| 密封取样测定煤层瓦斯含量试验研究;陈绍杰等;《华北科技学院学报》;20171015(第05期);全文 * |
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