CN113109078B - Coal mine well wall anti-interference fixed point sampling device and sampling method - Google Patents
Coal mine well wall anti-interference fixed point sampling device and sampling method Download PDFInfo
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- CN113109078B CN113109078B CN202110421516.3A CN202110421516A CN113109078B CN 113109078 B CN113109078 B CN 113109078B CN 202110421516 A CN202110421516 A CN 202110421516A CN 113109078 B CN113109078 B CN 113109078B
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- G—PHYSICS
- 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 relates to the field of coal mine fixed-point sampling, in particular to a coal mine well wall anti-interference fixed-point sampling device and a sampling method. When the drill bit reaches a preset position, a motor in the cylinder body is started, the opening size of the coal inlet hole is controlled through a preset program in the intelligent control unit, the sliding pin rod hidden in the sleeve is started to fix the built-in rotary cylinder, and when the coal sample in the sampler reaches a preset weight, the force sensor transmits the coal sample to the intelligent control unit to control the motor to rotate and close the coal inlet hole. The invention also provides a sampling method.
Description
Technical Field
The invention belongs to the field of coal mine fixed point sampling, and particularly relates to a coal mine well wall anti-interference fixed point sampling device and a sampling method.
Background
China is a large-scale country with coal output, coal resources occupy a large proportion of energy reserves in China, and coal is the energy which is the dominant position in China at present. In the coal mining process, gas disasters are a great problem, and in order to accurately predict the gas content in a coal mine, gas extraction is well performed, safe coal mining is guaranteed, and research researchers carry out extensive and deep research. The coal mine fixed-point sampling plays an important role in accurately predicting the gas content of each coal seam. The method has the defects that the obtained coal sample can be interfered by different coal beds in front, the coal sample can be mixed into other coal beds, the obtained coal sample can not come from a preset place completely, certain time is consumed for replacing the drill bit, the coal sample can be exposed to air for too long time, gas can be dissipated, and finally obtained data have large errors.
Disclosure of Invention
Aiming at the current situation, an anti-interference fixed-point sampling device and an anti-interference fixed-point sampling method for a coal mine well wall are provided for anti-interference fixed-point sampling.
In order to achieve the above purpose, the technical implementation scheme of the invention is as follows: the sampling device comprises a drill bit, a sleeve and a bottom cover; the cylinder body is internally provided with an intelligent control unit, a motor, a rotary cylinder and a sampling tank; the intelligent control unit, built-in power and motor are installed on telescopic top, and there is the opening rotary drum both sides, and the top welding of rotary drum has internal gear and nestification on the sleeve, thereby the motor can drive the internal gear and let the rotary drum rotatory, and the welding of rotary drum bottom has the bearing and nestification on the sleeve. The sleeve bottom is provided with the sample jar to set up force sensor in the sleeve inside with sample jar intermediate position same height department.
The invention is used as a preferred technical scheme, the drill bit adopts a spherical tooth drill bit, and the drill tooth alloy composite drill tooth.
As a preferred technical scheme, the rotary drum can be driven by a motor, the rotary drum rotates by a certain angle to control the coal inlet holes of the sleeve to be closed, half opened and fully opened, and coal particles with different sizes can be sampled.
As a preferable technical scheme, the slidable pin rods are miniature hydraulic rods, power can be provided by an internal power supply, and the three slidable pin rods are arranged in the sleeve, so that the rotary sleeve is fixed after rotating for a certain angle, and is prevented from continuously rotating.
The invention is a preferable technical scheme, the sampling tank at the bottom in the sleeve is a common sampling tank, the sampling tank can be directly taken out after sampling is finished, and a cover is installed for measuring the gas content.
Drawings
FIG. 1 is a schematic diagram of a drill bit of a coal mine well wall anti-interference fixed point sampling device and a sampling method.
Fig. 2 is a schematic structural diagram of a cross section of a sleeve and a rotating drum of the coal mine well wall anti-interference fixed point sampling device and the sampling method.
Fig. 3 is a plan view of a coal mine well wall anti-interference fixed point sampling device and a sampling method.
In the figure: 1-drill bit, 11-drill tooth, 12-screw line, 2-electronic control module, 21-intelligent control unit, 22-built-in storage battery, 23-motor, 24-motor gear, 3-sleeve, 31-slidable pin rod, 311-first slidable pin rod, 312-second slidable pin rod, 313-third slidable pin rod, 32-sleeve upper clamping groove, 33-coal inlet hole of sleeve barrel body, 34-sleeve outer single-piece helical blade, 35-sleeve lower clamping groove, 36-force sensor, 37-detachable sleeve bottom cover, 4-built-in rotary barrel, 41-rotary barrel gear outer pin hole, 42-internal gear, 43-built-in rotary barrel body, 44-bearing, 5-sampling tank and 6-thread drill rod.
Detailed Description
For a detailed explanation of the invention, the invention will be described in detail below with reference to the accompanying drawings, wherein the following description is given for an embodiment only in one of the possible combinations, and some of the ideas or partial modifications of the solutions of the invention based on the ideas of the invention are within the scope of the invention.
Referring to fig. 1-3 in detail, the technical solution proposed by the present invention is as follows: the preferred choice of the spherical-tooth drill bit 1 of the mine wall fixed-point sampling device is an alloy composite drill tooth 11; the top of the interior of the sleeve 3 is provided with an intelligent control unit 21 and a built-in storage battery 22, a motor 23, a motor gear 24 fixed on the motor is arranged at the bottom of the motor 23, an internal gear 42 at the upper part and a bearing 44 at the lower part of the built-in rotary drum 4 are arranged, ten coal inlet holes 33 at the upper part of the sleeve, a spiral blade 34 of the rotary drum, a sampling tank 5 positioned in the lower part of the sleeve, a force sensor 36, a detachable sleeve bottom cover 37 and a threaded drill rod 6 welded with the detachable sleeve bottom cover 37.
The working principle and the using method of the invention are as follows: the sampling device is connected with a drilling machine, when the threaded drill rod of the sampling device is submerged into a coal body, the threaded drill rod is continuously connected, the step is repeated until the coal body is about to reach a preset sampling place, coal in coal holes is taken out of the holes, the drill bit can idle for one to two minutes, and pulverized coal from the drilled place in the helical blade 34 is thrown off. After reaching the preset sampling place, the sampling device of the invention is about to start working, when the alloy drill bit 1 with the alloy drill teeth 11 enters the preset coal sampling place, the operation switch, the intelligent control unit 21, the motor 23, the built-in rotary drum 4 and the force sensor are about to start working. At this moment, the first slidable pin rod 311 is started to be drawn out from the pin hole 41 on the outer side of the drum gear, then the motor 23 rotates for a fixed number of turns under the control of the intelligent control unit 21, the opening degree of the coal inlet hole 33 on the sleeve 3 can be controlled, and two opening degrees of the coal inlet hole 33 are set according to the size of coal particles.
Specifically, when a small-particle coal sample is sampled, under the control of the intelligent control unit 21, the first slidable pin 311 on the sleeve 3 is pulled out, the motor 23 rotates for a certain number of turns, the internal rotary drum 4 rotates to half open the coal inlet hole 33 on the sleeve 3, the crushed coal particles are driven by the helical blade 34 to enter the sampling tank 5 inside the sleeve 3, when the coal particles in the sampling tank reach a predetermined quality, the force sensor feeds information back to the intelligent control unit 21, the second slidable pin 312 is pulled out from the outer pin hole 41 of the rotary drum gear at the moment, the motor 23 reverses for a fixed number of turns to return the internal rotary drum 4 to the original position, the intelligent control unit 21 controls the first slidable pin 311 to enter the outer pin hole 41 of the rotary drum gear at the moment, the coal inlet hole 33 on the sleeve 3 is completely closed, and the sampling device can be slowly withdrawn at the moment.
Specifically, when a large-particle coal sample is sampled, under the control of the intelligent control unit 21, the slidable pin rod 311 on the sleeve 3 is pulled out, the motor 23 rotates for a certain number of turns, the built-in rotary drum 4 rotates to completely open the coal inlet hole 33 on the sleeve 3, the crushed coal particles are driven by the helical blade 34 to enter the sampling tank 5 inside the sleeve 3, when the coal particles in the sampling tank 5 reach a predetermined quality, the force sensor feeds information back to the intelligent control unit 21, the third slidable pin rod 313 is pulled out from the outer pin hole 41 of the rotary drum gear at the moment, the motor 23 reverses for a fixed number of turns to allow the built-in rotary drum 4 to return to the original position, the intelligent control unit 21 controls the first slidable pin rod 311 to enter the outer pin hole 41 of the rotary drum gear at the moment, the coal inlet hole 33 on the sleeve 3 is completely closed, and the sampling device can be slowly withdrawn at the moment.
Specifically, when the weight of the coal sample is judged to be too small, the specific description of the method is as follows: when the coal sample falls into the sampling tank 5, the coal sample generates a reaction force to the sampling tank 5, the rotating speeds of the sampling tank and the drill bit 1 are the same and are all v, when the sampling mass is m, the density of the coal is rho, the length of the coal sample is h, and the reaction force of the centripetal force is F,
the sampling tank 5 is subjected to centripetal force and generates reaction force on the sleeve 3, when the collected coal sample reaches a certain weight, the calculation is carried out by using the formula (1), the generated centripetal force is calculated by using the formula (2), the reaction force of the centripetal force is sensed by the force sensor 36 and transmitted to the intelligent control unit 21, at the moment, the second slidable pin 312 or the third slidable pin 313 is controlled to be drawn out from the outer pin hole 41 of the drum gear, the motor 23 is reversed to drive the built-in drum 4 to return to the original position, meanwhile, the first slidable pin 311 enters the outer pin hole 41 of the drum gear, the coal inlet hole 33 of the drum body of the sleeve is completely closed, and at the moment, the drilling machine is slowly controlled to back out.
Specifically, after the sampling device is taken out, the sampling tank 5 can be disassembled, the gas content is measured, after the measurement is completed, the pulverized coal can be made into briquettes, and the volume content of each component is observed and measured under a microscope electron microscope.
The device is efficient and simple, can reach a preset place for pure sampling, avoids the interference of a front coal bed, does not need to replace a drill bit, saves time and reduces unnecessary troubles.
Claims (4)
1. The utility model provides a colliery wall of a well jam-proof fixed point sampling device which characterized in that:
the intelligent drilling device comprises a drill bit (1), drilling teeth (11), screw grains (12), an electric control module (2), an intelligent control unit (21), a built-in storage battery (22), a motor (23), a motor gear (24), a sleeve (3), a slidable pin rod (31), a sleeve upper clamping groove (32), a coal inlet hole (33) of a sleeve barrel body, a sleeve outer single-chip spiral blade (34), a sleeve lower clamping groove (35), a force sensor (36), a detachable sleeve bottom cover (37), a built-in rotary drum (4), a built-in rotary drum gear outer pin hole (41), an internal gear (42), a built-in rotary drum barrel body (43), a bearing (44), a sampling tank (5) and a threaded drill rod (6);
the built-in rotary drum (4) is positioned in the sleeve (3), the top in the sleeve (3) is provided with an intelligent control unit (21), a built-in storage battery (22) and a motor (23), and the bottom of the motor (23) is provided with a motor gear (24) fixed on the motor; the top end of the built-in rotary drum (4) is a freely rotatable internal gear (42) which is embedded in the sleeve (3), and the motor gear (24) is meshed with the internal gear (42); rectangular openings are formed in two sides of the built-in rotary drum (4); the bottom end of the built-in rotary drum (4) is provided with a freely rotatable bearing (44) which is embedded in the sleeve (3), and the internal gear (42) and the bearing (44) are integrally welded with the built-in rotary drum (4); the sampling tank (5) is arranged at the bottom of the sleeve (3), the force sensor (36) is arranged outside the sampling tank (5), the threaded drill rod (6) is welded with the bottom of the sleeve (3), the slidable pin rod (31) comprises a first slidable pin rod (311), a second slidable pin rod (312) and a third slidable pin rod (313), and the slidable pin rod (31) is hidden in the sleeve (3) and used for fixing the built-in rotary drum (4).
2. The coal mine shaft wall anti-interference fixed point sampling device according to claim 1, characterized in that: the drill teeth (11) are alloy composite drill teeth, and the drill bit (1) is a spherical tooth drill bit.
3. The coal mine shaft wall anti-interference fixed point sampling device of claim 1, which is characterized in that: the sampling tank (5) can be taken out.
4. The sampling method of the coal mine shaft wall anti-interference fixed point sampling device according to claim 1, characterized in that: connecting a sampling device with a used drilling machine, when a threaded drill rod (6) of the sampling device is submerged into a coal body, continuously connecting the threaded drill rod, repeating the steps until the coal body is about to reach a preset sampling place, taking out coal in a coal hole, idling a drill bit (1) for one to two minutes, throwing off coal powder from a drilled place in a single-sheet spiral blade (34) on the outer side of a sleeve, after a preset sample taking place is reached, starting the sampling device, when the drill bit (1) with alloy composite drill teeth (11) enters the preset coal sample taking place, operating a switch, an intelligent control unit (21), a motor (23), a built-in rotary drum (4) and a force sensor (36) to work, starting a slidable pin rod (311) to be drawn out from a pin hole (41) on the outer side of a built-in rotary drum gear, then rotating the motor (23) for a fixed number of turns under the control of the intelligent control unit (21), controlling the opening degree of a coal inlet hole (33) on the sleeve (3), and setting two opening degrees of the coal inlet hole (33) of the sampling device according to the coal particles;
when a small-particle coal sample is sampled, under the control of an intelligent control unit (21), a slidable pin rod (311) on a sleeve (3) is pulled out, a motor (23) rotates for a certain number of turns, a built-in rotary drum (4) rotates, a coal inlet (33) on the sleeve (3) is opened by a half, broken coal particles enter a sampling tank (5) in the sleeve (3) under the drive of a single-blade spiral blade (34) on the outer side of the sleeve, when the coal particles in the sampling tank (5) reach a preset mass, a force sensor (36) feeds information back to the intelligent control unit (21), a slidable pin rod (312) is pulled out from a pin hole (41) on the outer side of a built-in rotary drum gear, the motor (23) reverses and fixes the number of turns to allow the built-in rotary drum (4) to return to the original position, the intelligent control unit (21) controls the slidable pin rod (311) to enter a pin hole (41) on the outer side of the built-in rotary drum gear, the coal inlet (33) on the sleeve (3) is completely closed, and the sampling device slowly withdraws from the sampling device;
when large-particle coal samples are sampled, under the control of the intelligent control unit (21), the slidable pin rod (311) on the sleeve (3) is pulled out, the motor (23) rotates for a certain number of turns, the built-in rotary drum (4) rotates, the coal inlet hole (33) on the sleeve (3) is completely opened, the crushed coal particles are driven by the helical blade (34) to enter the sampling tank (5) in the sleeve (3), when the coal particles in the sampling tank (5) reach a preset quality, the force sensor (36) feeds information back to the intelligent control unit (21), the slidable pin rod (313) is pulled out from the pin hole (41) on the outer side of the built-in rotary drum gear, the motor (23) reverses for a fixed number of turns to enable the built-in rotary drum (4) to return to the original position, the intelligent control unit (21) controls the slidable pin rod (311) to enter the pin hole (41) on the outer side of the built-in rotary drum gear, the coal inlet hole (33) on the sleeve (3) is completely closed, and the sampling device slowly withdraws.
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| CN202110421516.3A CN113109078B (en) | 2021-04-20 | 2021-04-20 | Coal mine well wall anti-interference fixed point sampling device and sampling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102384860A (en) * | 2011-07-25 | 2012-03-21 | 华北科技学院 | Counter-rotating sealing coal sample sampler and application method thereof |
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| GB976172A (en) * | 1963-01-31 | 1964-11-25 | Cons Pneumatic Tool Company Lt | Improvements in or relating to sampling augers |
| CN102103041B (en) * | 2011-01-10 | 2012-07-25 | 河南理工大学 | On-site sealed sampling device for coal bed gas |
| CN205209810U (en) * | 2015-10-28 | 2016-05-04 | 天津市泽元混凝土有限公司 | Cement sampler in cement transport vechicle |
| CN210442133U (en) * | 2019-08-30 | 2020-05-01 | 青海省第三地质勘查院 | Sampling device for geological mineral exploration |
| CN110646236A (en) * | 2019-09-29 | 2020-01-03 | 中煤科工集团重庆研究院有限公司 | Coal seam sealing and sampling device while drilling |
| CN212363718U (en) * | 2020-06-24 | 2021-01-15 | 苏州道恒泳池设备有限公司 | Hydraulic and hydroelectric engineering foundation soil experiment sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102384860A (en) * | 2011-07-25 | 2012-03-21 | 华北科技学院 | Counter-rotating sealing coal sample sampler and application method thereof |
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