CN218156991U - Accurate airtight sampling device of colliery long distance drilling - Google Patents
Accurate airtight sampling device of colliery long distance drilling Download PDFInfo
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- CN218156991U CN218156991U CN202222502163.2U CN202222502163U CN218156991U CN 218156991 U CN218156991 U CN 218156991U CN 202222502163 U CN202222502163 U CN 202222502163U CN 218156991 U CN218156991 U CN 218156991U
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- 238000005070 sampling Methods 0.000 title claims abstract description 64
- 238000005553 drilling Methods 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003245 coal Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of the colliery sample. Relate to an accurate airtight sampling device of colliery long distance drilling, include the connecting portion of being connected with the drilling rod, with connecting portion threaded connection's sample portion and set up at the terminal drill bit that passes through threaded connection of sample portion, its characterized in that: the sampling part comprises a coring outer cylinder, a one-way valve, a telescopic locking mechanism and a coring middle cylinder which are sequentially sleeved in the coring outer cylinder, and a coring inner cylinder which is sleeved in the coring middle cylinder; the coring inner cylinder is fixedly connected with the coring outer cylinder; the coring internal cylinder is connected with the drill bit through a sampling valve, a valve switch is arranged on the sampling valve, and the coring internal cylinder is connected with the valve switch; the telescopic locking mechanism is driven by high-pressure water in the drill rod to push the coring middle barrel to move along the axial direction in the coring outer barrel, so that the valve is driven to open and close, and the sampling valve is opened and closed. The utility model discloses it is adjustable to start water pressure, and the seal is good, has reduced the adverse effect of sample process to the coal sample.
Description
Technical Field
The utility model belongs to the technical field of the colliery sample, a accurate airtight sampling device of colliery long distance drilling is related to.
Background
In the prior art, for example, a Chinese patent with the publication number of CN107806341B discloses an accurate airtight sampling device and a sampling method for long-distance drilling of a coal mine, the device adopts the structural design of an inner cylinder, a middle cylinder and an outer cylinder, and a core drilling process is adopted, wherein a core outer cylinder drives a core drill to drill a coal sample, and the coal core enters a core inner cylinder through a core thin-wall drill and a ball valve; stopping drilling after the coring length is reached, introducing high-pressure water, enabling the high-pressure water to act on the cut-off valve after passing through the check valve, enabling the cut-off valve and the coring middle cylinder to move forwards after the water pressure generates thrust to cut off the pin, driving the ball valve switch and the ball valve to rotate so as to cut off the coring coal pillar, and sealing the coal sample and the gas in the coring inner cylinder; after coring, connecting the underground desorption instrument, the desorption can be carried out on site, but the following defects still exist:
(1) The sealing effect of the plugging ball is poor, and gas and water in a drill hole easily enter the sampling inner cylinder.
(2) The start-up water pressure of unable regulation sample easily causes the switching of ball valve to trigger by mistake, and cinder and water get into sampling device, influence the experimental result accuracy.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at solving above-mentioned problem, provide an accurate airtight sampling device of colliery long distance drilling.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the accurate airtight sampling device for long-distance drilling of the coal mine comprises a connecting part connected with a drill rod, a sampling part in threaded connection with the connecting part and a drill bit arranged at the tail end of the sampling part and in threaded connection, wherein the sampling part comprises a core taking outer cylinder, a check valve, a telescopic locking mechanism and a core taking middle cylinder which are sequentially sleeved in the core taking outer cylinder, and a core taking inner cylinder sleeved in the core taking middle cylinder; the coring inner cylinder is fixedly connected with the coring outer cylinder; the coring internal cylinder is connected with the drill bit through a sampling valve, a valve switch is arranged on the sampling valve, and the coring internal cylinder is connected with the valve switch;
the telescopic locking mechanism is driven by high-pressure water in the drill rod to push the coring middle barrel to move along the axial direction in the coring outer barrel, so that the valve is driven to open and close, and the sampling valve is opened and closed.
Furthermore, the telescopic locking mechanism comprises a locking piece, a pressure rod, a limiting ring and a return spring; the reset spring is arranged in the coring outer cylinder and is propped against the end surface of the coring middle cylinder to push the coring middle cylinder to reset;
the limiting ring is fixedly arranged in the coring outer barrel; the pressure rod is arranged in the limiting ring in a sliding mode, one end of the pressure rod is in contact with high-pressure water in the drill rod, and sawteeth are arranged at the other end of the pressure rod; the side wall of the limiting ring is provided with a sliding groove, and the end surface of the limiting ring is provided with a stop groove; the sliding grooves and the stop grooves are alternately distributed at one end of the limiting ring; the locking piece is arranged between the limiting ring and the coring middle cylinder; a sliding block is arranged at one end of the locking piece, and a first inclined plane is arranged on the end face of the sliding block; the inlet of the stop groove is provided with a second inclined surface, and the inlet of the sliding groove is provided with a third inclined surface;
the initial position of the sliding block is positioned in the sliding groove and is in sliding fit with the sliding groove; when the slide block is in the sliding groove, the press rod pushes the locking piece to slide in the sliding groove, so that the locking piece generates axial displacement, and the locking piece drives the coring middle cylinder to move to drive the sampling valve to open and close; when the sliding block slides out of the sliding groove, the first inclined surface pushes the locking piece to rotate in the circumferential direction, so that the first inclined surface is matched with the second inclined surface, the sliding block slides into the stop groove, the position of the coring middle cylinder is locked, and the sampling valve is kept in an open state; when the compression bar pushes the locking piece again, the locking piece rotates to enable the first inclined surface to be matched with the third inclined surface, the sliding block resets to the sliding groove, and meanwhile, under the action of the reset spring, the core taking middle cylinder drives the sampling valve to be closed.
Further, the first inclined plane, the second inclined plane and the third inclined plane are the same in inclination direction and angle.
Furthermore, the number of teeth of the saw teeth is the sum of the number of the sliding grooves and the number of the stop grooves.
Further, a water pressure adjusting disc is arranged between the one-way valve and the telescopic locking mechanism; the water pressure adjusting disc is provided with a plurality of water permeable holes, detachable screws are arranged in the water permeable holes, and the water pressure acting on the telescopic locking mechanism is changed through the quantity of the adjusting screws.
Furthermore, a fluted disc is arranged on the edge of the valve switch; the position of coring middle tube corresponding to the valve switch is provided with a tooth groove, which is engaged with the tooth disc.
Further, the one end of getting the core inner tube and keeping away from the drill bit is equipped with the inner tube base, be equipped with analytic interface on the inner tube base.
The beneficial effects of the utility model reside in that:
1. the utility model discloses the flexible locking mechanical system who adopts in is similar with the flexible locking mechanical system's of ballpoint principle, utilizes the switching that the flexible locking mechanical system of high pressure water drive realized the sample valve door, and the sample process realizes the maintenance of sample valve open mode through ending the position groove, only needs start the water under high pressure when the sample valve is opened and is closed, and the sample process need not to keep high-pressure state, has avoided the water under high pressure to get into the coal sample in, influences the measurement of coal sample.
2. The utility model discloses a water pressure adjustment disk controls flexible locking mechanism's start-up water pressure size, can effectual control start-up water pressure, avoids adopting the water under high pressure to cut the drawback of judging among the prior art, and the device use does not cause destruction, repeatedly usable.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the precise closed sampling device for long-distance drilling of the middling mine of the utility model;
fig. 2 is a schematic view of the middle telescopic locking mechanism of the present invention;
FIG. 3 is a schematic view of a compression bar;
FIG. 4 is a schematic view of a stop collar;
FIG. 5 is a schematic view of the locking member;
fig. 6 is a diagram illustrating a water pressure regulating disk.
Reference numerals are as follows: 1-a reducer union; 2-coring the outer cylinder; 3, drilling a bit; 4-a one-way valve; 5-a water pressure adjusting disc; 6-a pressure lever; 7-a limit ring; 8-a lock; 9-coring the middle cylinder; 10-coring the inner cylinder; 11-a sampling valve; 12-valve switch; 13-a return spring; 14-inner cylinder base; 15-parsing the interface; 61-serration; 71-a sliding groove; 72-a stop groove; 73-a second bevel; 74-a third bevel; 81-a slide block; 82-first inclined plane.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the invention, the figures are shown in schematic form and not in pictorial form; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "front", "back", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes, and should not be construed as limitations of the present invention, and it will be understood that specific meanings of the above terms can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 6, the device for accurately and hermetically sampling long-distance drill holes in a coal mine comprises a connecting part connected with a drill rod, a sampling part in threaded connection with the connecting part, and a drill bit 3 arranged at the tail end of the sampling part and in threaded connection with the connecting part, wherein the connecting part is a reducer union 1, the sampling part comprises an outer core barrel 2, a one-way valve 4, a telescopic locking mechanism and a middle core barrel 9 which are sequentially sleeved in the outer core barrel 2, and an inner core barrel 10 sleeved in the middle core barrel 9; the coring inner cylinder 10 is fixedly connected with the coring outer cylinder 2; the coring inner cylinder 10 is connected with the drill bit 3 through a sampling valve 11, a valve switch 12 is arranged on the sampling valve 11, and the coring middle cylinder 9 is connected with the valve switch 12;
the telescopic locking mechanism is driven by high-pressure water in the drill rod to push the coring middle barrel 9 to move axially in the coring outer barrel 2, so that the valve switch 12 is driven to realize the opening and closing of the sampling valve 11.
The telescopic locking mechanism comprises a locking piece 8, a pressure lever 6, a limiting ring 7 and a return spring 13; the reset spring 13 is arranged in the coring outer cylinder 2 and is propped against the end surface of the coring middle cylinder 9 to push the coring middle cylinder 9 to reset;
the limiting ring 7 is fixedly arranged in the coring outer barrel 2; the pressure rod 6 is arranged in the limiting ring 7 in a sliding mode, one end of the pressure rod 6 is in contact with high-pressure water in the drill rod, and the other end of the pressure rod 6 is provided with sawteeth 61; a sliding groove 71 is arranged on the side wall of the limiting ring 7, and a stop groove 72 is arranged on the end surface of the limiting ring 7; the sliding grooves 71 and the stop grooves 72 are alternately distributed at one end of the limit ring 7; the locking piece 8 is arranged between the limiting ring 7 and the coring middle barrel 9; one end of the locking piece 8 is provided with a sliding block 81, and the end surface of the sliding block 81 is provided with a first inclined surface 82; a second inclined surface 73 is arranged at the inlet of the stop groove 72, and a third inclined surface 74 is arranged at the inlet of the sliding groove 71; the first inclined surface 82, the second inclined surface 73 and the third inclined surface 74 are inclined in the same direction and at the same angle. The number of teeth of the saw teeth 61 is the sum of the number of the sliding grooves 71 and the number of the stop grooves 72, and each sliding groove 71 and each stop groove 72 corresponds to one saw tooth 61.
The initial position of the sliding block 81 is that the sliding block is positioned in the sliding groove 71 and is in sliding fit with the sliding groove 71; when the pressure lever 6 pushes the locking piece 8, the tooth crest of the sawtooth 61 abuts against the first inclined surface 82, and when the sliding block 81 is in the sliding groove 71, the pressure lever 6 pushes the locking piece 8 to slide in the sliding groove 71, so that the locking piece 8 generates axial displacement, and the locking piece 8 drives the coring middle barrel 9 to move to drive the sampling valve 11 to open and close; when the sliding block 81 slides out of the sliding groove 71, the first inclined surface 82 pushes the locking piece 8 to rotate circumferentially, so that the first inclined surface 82 is matched with the second inclined surface 73, the sliding block 81 slides into the stop groove 72, the position of the coring middle cylinder 9 is locked, and the sampling valve 11 is kept in an open state; when the pressure lever 6 pushes the locking piece 8 again, the locking piece 8 rotates to enable the first inclined surface 82 to be matched with the third inclined surface 74, the sliding block 81 is reset into the sliding groove 71, and meanwhile, the coring middle barrel 9 drives the sampling valve 11 to close under the action of the reset spring 13.
A water pressure adjusting disc 5 is arranged between the one-way valve 4 and the telescopic locking mechanism; a plurality of water permeable holes are formed in the water pressure adjusting disc 5, detachable screws are arranged in the water permeable holes, and the amount of the water pressure adjusting screws is changed to act on the water pressure of the telescopic locking mechanism.
A fluted disc is arranged at the edge of the valve switch 12; the position of the coring middle cylinder 9 corresponding to the valve switch 12 is provided with a tooth groove, and the tooth groove is meshed with the tooth disc.
One end of the coring inner cylinder 10, which is far away from the drill bit 3, is provided with an inner cylinder base 14, and the inner cylinder base 14 is provided with an analysis interface 15. After sampling, the gas analysis measurement is directly carried out through the analysis interface 15.
Adopt the accurate airtight sampling device of colliery long distance drilling in this embodiment to take a sample, include following step:
1) Carrying out sampling hole drilling construction, withdrawing the drill rod after sampling drilling construction is finished, connecting the coal mine long-distance drilling accurate airtight sampling device with the drill rod, and sending the coal mine long-distance drilling accurate airtight sampling device to a sampling point through the drill rod when the sampling valve 11 is in a closed state;
2) After the accurate airtight sampling device of long distance drilling of colliery is sent to the sampling point, increase the water pressure to the setting and drive the water pressure, the flexible locking mechanism of high water pressure drive moves at this moment, the core middle tube 9 is stretched forward, the sampling valve 11 is opened, the slide block 81 slips into the stop groove 72, the sampling valve 11 keeps the open state, take a sample after reducing the water pressure;
3) After sampling is finished, the water pressure is increased again to drive the telescopic locking mechanism to act again, the sliding block 81 slides into the sliding groove 71 from the stop groove 72, water injection is closed, the core taking middle barrel 9 resets under the action of the reset spring 13, the sampling valve 11 is closed, and sampling is finished.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or substituted by equivalents without departing from the spirit and scope of the technical solutions, which should be covered by the scope of the claims of the present invention.
Claims (7)
1. The utility model provides an accurate airtight sampling device of colliery long distance drilling, includes the connecting portion of being connected with the drilling rod, with connecting portion threaded connection's sample portion and set up at the terminal drill bit that passes through threaded connection of sample portion, its characterized in that: the sampling part comprises a coring outer cylinder, a one-way valve, a telescopic locking mechanism and a coring middle cylinder which are sequentially sleeved in the coring outer cylinder, and a coring inner cylinder sleeved in the coring middle cylinder; the coring inner cylinder is fixedly connected with the coring outer cylinder; the coring internal cylinder is connected with the drill bit through a sampling valve, a valve switch is arranged on the sampling valve, and the coring internal cylinder is connected with the valve switch;
the telescopic locking mechanism is driven by high-pressure water in the drill rod to push the coring middle barrel to move along the axial direction in the coring outer barrel, so that the valve is driven to open and close to realize the sampling valve.
2. The coal mine long distance drilling accurate closed sampling device according to claim 1, characterized in that: the telescopic locking mechanism comprises a locking piece, a pressure rod, a limiting ring and a return spring; the reset spring is arranged in the coring outer cylinder and is abutted against the end surface of the coring middle cylinder to push the coring middle cylinder to reset;
the limiting ring is fixedly arranged in the coring outer barrel; the pressure rod is arranged in the limiting ring in a sliding manner, one end of the pressure rod is contacted with high-pressure water in the drill rod, and the other end of the pressure rod is provided with sawteeth; the side wall of the limiting ring is provided with a sliding groove, and the end face of the limiting ring is provided with a stop groove; the sliding grooves and the stop grooves are alternately distributed at one end of the limiting ring; the locking piece is arranged between the limiting ring and the coring middle cylinder; a sliding block is arranged at one end of the locking piece, and a first inclined plane is arranged on the end face of the sliding block; the inlet of the stop groove is provided with a second inclined surface, and the inlet of the sliding groove is provided with a third inclined surface;
the initial position of the sliding block is positioned in the sliding groove and is in sliding fit with the sliding groove; when the slide block is in the sliding groove, the press rod pushes the locking piece to slide in the sliding groove, so that the locking piece generates axial displacement, and the locking piece drives the coring middle cylinder to move to drive the sampling valve to open and close; when the sliding block slides out of the sliding groove, the first inclined surface pushes the locking piece to rotate in the circumferential direction, so that the first inclined surface is matched with the second inclined surface, the sliding block slides into the stop groove, the position of the coring middle cylinder is locked, and the sampling valve is kept in an open state; when the depression bar promoted the locking piece once more, the locking piece was rotatory to make first inclined plane and third inclined plane cooperation, and the slider resets to the sliding tray in, and simultaneously under reset spring effect, the section of thick bamboo drive sampling valve closes in coring.
3. The coal mine long-distance drilling accurate closed sampling device as claimed in claim 2, wherein: the first inclined plane, the second inclined plane and the third inclined plane are the same in inclination direction and angle.
4. The coal mine long distance drilling accurate closed sampling device according to claim 2, characterized in that: the number of teeth of the saw teeth is the sum of the number of the sliding grooves and the number of the stop grooves.
5. The coal mine long distance drilling accurate closed sampling device according to claim 1, characterized in that: a water pressure adjusting disc is arranged between the one-way valve and the telescopic locking mechanism; the water pressure adjusting disc is provided with a plurality of water permeable holes, detachable screws are arranged in the water permeable holes, and the water pressure acting on the telescopic locking mechanism is changed through the quantity of the adjusting screws.
6. The coal mine long distance drilling accurate closed sampling device according to claim 1, characterized in that: a fluted disc is arranged at the edge of the valve switch; the position of coring middle tube corresponding to the valve switch is provided with a tooth groove, which is engaged with the tooth disc.
7. The coal mine long distance drilling accurate closed sampling device according to claim 1, characterized in that: the one end of getting core the inner tube and keeping away from the drill bit is equipped with the inner tube base, be equipped with analytic interface on the inner tube base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222502163.2U CN218156991U (en) | 2022-09-21 | 2022-09-21 | Accurate airtight sampling device of colliery long distance drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222502163.2U CN218156991U (en) | 2022-09-21 | 2022-09-21 | Accurate airtight sampling device of colliery long distance drilling |
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| CN218156991U true CN218156991U (en) | 2022-12-27 |
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| CN202222502163.2U Active CN218156991U (en) | 2022-09-21 | 2022-09-21 | Accurate airtight sampling device of colliery long distance drilling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115949361A (en) * | 2023-03-14 | 2023-04-11 | 中国矿业大学 | Coal bed gas content measurement coring-while-drilling device and coring method |
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2022
- 2022-09-21 CN CN202222502163.2U patent/CN218156991U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115949361A (en) * | 2023-03-14 | 2023-04-11 | 中国矿业大学 | Coal bed gas content measurement coring-while-drilling device and coring method |
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