CN103439461B - Triaxial coal and gas multi-outbursting test pressure-relief device - Google Patents
Triaxial coal and gas multi-outbursting test pressure-relief device Download PDFInfo
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- CN103439461B CN103439461B CN201310375239.2A CN201310375239A CN103439461B CN 103439461 B CN103439461 B CN 103439461B CN 201310375239 A CN201310375239 A CN 201310375239A CN 103439461 B CN103439461 B CN 103439461B
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Abstract
The invention discloses a triaxial coal and gas multi-outbursting test pressure-relief device, comprising a first pressure chamber and a second pressure chamber, wherein each of the first pressure chamber and the second pressure chamber comprises a pressure chamber sleeve, a spring lock pin, a piercing tool, an energy-storage spring seat, an energy-storage spring, a top cover, a sealing aluminum sheet and a sealing screw plug, the second pressure chamber is arranged on the top of the first pressure chamber, the bottom of the pressure chamber sleeve of the second pressure chamber is in sealing fitting with the top of the pressure chamber sleeve of the first pressure chamber, and the piercing tool on the second pressure chamber is aligned with the sealing aluminum sheet on the first pressure chamber. The triaxial coal and gas multi-outbursting test pressure-relief device can adopt raw coal with different sizes to perform coal and gas outbursting tests in a triaxial stress state so as to comprehensively and scientifically research a coal and gas outbursting mechanism.
Description
Technical field
The present invention relates to a kind of coal and gas prominent test unit, particularly relate to a kind of three axle coal and non-coal repeatedly outstanding test pressure relief device.
Background technology
Coal and gas prominent is a kind of extremely complicated dynamic phenomenon of underground coal mine, and it seriously threatens Safety of Coal Mine Production, affects the performance of coal production ability.At driving face, particularly often coal and non-coal postponing bursting occurs in stone door punching coal process, it is the coal and gas prominent that after explosion or operation, a period of time inherent explosion or operation place occur.Steeply pitching seam etc. first time outstanding occur after also once occurred secondary outstanding or even three times outstanding.According to incompletely statistics; there is a few percent that postponing bursting number of times accounts for total outstanding number of times in the whole nation; although proportion is little; but because " extension ", this kind of giving prominence to often exceeds the unexpected of people, the defer time of postponing bursting; without certain rule; short then a few minutes, long then tens hours, even several days; Secondary is given prominence to and is also often occurred in the scale removal process after giving prominence to for the first time; If outstanding time, just in time run into workplace have people to carry out operation or outstanding to last time after clearing up, personnel can not withdraw in time, very harmful to miner, and cause great casualties and property loss, mine safety production in serious threat.The mechanism that coal and gas prominent occurs and form are complicated, along with the increase of coal mining depth and mining conditions day by day complicated, the generation of coal and gas prominent is also difficult to prediction more, at present, the study mechanism of Chinese scholars to coal and gas prominent makes certain gains, but most achievement is all the hypothesis that field statistics data and laboratory study propose.These hypothesis all can only be described a part of phenomenon of certain of coal and gas prominent, can't form the complete Principle System of quantification.Utilize existing hypothesis to predict very large difficulty to coal and gas prominent, and accuracy is not high, this just brings huge hidden danger to mine safety production.
At present, mainly there is following problem in the device carrying out coal and gas prominent test: the test specimen that (1) adopts mostly is moulded coal, although moulded coal has similarity with raw coal to a certain extent, still there is larger difference in both, and the research to coal and gas prominent mechanism has certain limitation; (2) part moulded coal sample dimensions is comparatively large, and the test preparatory period is longer; (3) device is installed comparatively complicated; (4) device can only produce and once give prominence to, and can not reflect down-hole coal and gas prominent phenomenon really; (5) aspis opening speed is comparatively slow, have impact on the time of coal and gas prominent to a certain extent, can not close to field condition.
Summary of the invention
For above shortcomings in prior art, the invention provides a kind of three axle coal and non-coal repeatedly outstanding test pressure relief device.This test pressure relief device can reach the effect of quick pressure releasing, and can produce the phenomenon of coal and non-coal repeatedly outstanding or coal and non-coal delay outburst, thus the mechanism that coal and gas prominent occurs is carried out more comprehensively, more scientific research.
In order to solve the problems of the technologies described above, present invention employs following technical scheme:
Three axle coal and non-coal are outstanding test pressure relief device repeatedly, comprises pressure chamber and second time pressure chamber for the first time;
Described first time pressure chamber and second time pressure chamber includes pressure chamber's sleeve, spring lock shotpin, punctures cutter, energy-storaging spring seat, energy-storaging spring, top cover, sealing aluminium flake and sealing plug, described pressure chamber sleeve be circumferentially laid with at least two through holes, be provided with one in each through hole and put in spring lock shotpin in pressure chamber's sleeve, described spring lock shotpin and through hole slide and are sealed and matched, described energy-storaging spring seat is hollow structure, and energy-storaging spring seat to be located in pressure chamber's sleeve and to be slidably matched with the inwall of pressure chamber's sleeve, and described top cover is hollow structure and is arranged on the top of pressure chamber's sleeve, and top cover coordinates with pressure chamber's sleeve seal, one end of described energy-storaging spring is pressed on energy-storaging spring seat, and the other end of energy-storaging spring is pressed on top cover, and described energy-storaging spring seat is pressed on spring lock shotpin, the described cutter that punctures is hollow structure, punctures cutter and is arranged on below the middle part of energy-storaging spring seat, described sealing aluminium flake is arranged in the hollow hole of top cover, and sealing plug to screw in the hollow hole of top cover and is pressed on sealing aluminium flake, and sealing aluminium flake coordinates with the hollow hole inner wall sealing of top cover, described lock pin driving mechanism comprises tractive magnet, tooth bar, orienting sleeve, tooth bar reset components, gear and cam mechanism, guard shield and guard shield lock-screw, tooth bar is respectively equipped with an orienting sleeve near two ends, tooth bar and orienting sleeve are slidably matched, one end of tooth bar arranges tractive magnet, tractive magnet slides on orienting sleeve for driving tooth bar, at the other end of tooth bar, tooth bar reset components is set, wheel and rack tooth engagement on gear and cam mechanism, cam slidably contacts with spring lock shotpin, in the process that cam rotates, cam can promote spring lock shotpin and move in pressure chamber's sleeve, after cam disengages spring lock shotpin, under the effect of back-moving spring, the outwards movement of spring lock shotpin, outside gear and cam mechanism, guard shield is set, connected by guard shield lock-screw between guard shield,
Described second time pressure chamber is arranged on the top of first time pressure chamber, the bottom of pressure chamber's sleeve of second time pressure chamber coordinates with the top seal of pressure chamber's sleeve of first time pressure chamber, punctures the sealing aluminium flake of bit alignment for the first time in pressure chamber for the second time in pressure chamber.
Compared with prior art, three axle coal and non-coal of the present invention repeatedly outstanding test pressure relief device tool have the following advantages:
1, this test pressure relief device can reach the effect of quick pressure releasing, and can produce the phenomenon of coal and non-coal repeatedly outstanding or coal and non-coal delay outburst, thus the mechanism that coal and gas prominent occurs is carried out more comprehensively, more scientific research.
2, this test pressure relief device can monitor the gas pressure of raw coal body after outstanding and temperature variations, to reach the target being familiar with coal and gas prominent mechanism under various factors effect; Raw coal can be adopted in test to test, and result more tallies with the actual situation, and can better disclose the effect of various factors.
3, this test pressure relief device can realize repeatedly giving prominence to and test with postponing bursting, for this kind of special and outstanding situation that the extent of injury is large prevent basis is provided.That brings out in various degree by regulating the pressure differential of each pressure chamber is outstanding.The destruction of outstanding process to coal body can be familiar with, layering soft in coal seam and outstanding coal study on the genesis are provided support; For the degree of impairment of coal body under outstanding role and the research of micro-damage state provide basis.So that the mechanism that more scientific research coal and gas prominent produces, that form science, perfect theory, for the control of colliery to coal and gas prominent is provided fundamental basis.
Accompanying drawing explanation
Fig. 1 is that pressure chamber and second time pressure chamber are arranged on the structural representation in main pressure chamber for the first time;
Fig. 2 is the cross section view of time pressure chamber;
Fig. 3 is the vertical view of time pressure chamber.
In accompanying drawing: 1-pressure chamber sleeve; 2-spring lock shotpin; 3-puncture cutter; 4-energy-storaging spring seat; 5-energy-storaging spring; 6-top cover; 7-sealing aluminium flake; 8-sealing plug; 9-pressure chamber for the first time; 10-second time pressure chamber; 11-main pressure chamber; 12-confined pressure chamber upper cover; 13-sealing aluminium flake; 14-screw; 15-O-ring seal; 16-tractive magnet; 17-tooth bar; 18-orienting sleeve; 19-tooth bar reset components; 20-gear and cam mechanism; 21-guard shield; 22-guard shield lock-screw; 23-back-moving spring; 24-lock pin O-ring seal.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, three axle coal and non-coal are outstanding test pressure relief device repeatedly, comprises pressure chamber 9 and second time pressure chamber 10 for the first time.
Wherein, first time pressure chamber 9 and second time pressure chamber 10 includes pressure chamber's sleeve 1, spring lock shotpin 2, punctures cutter 3, energy-storaging spring seat 4, energy-storaging spring 5, top cover 6, sealing aluminium flake 7, sealing plug 8 and lock pin driving mechanism, as shown in Figure 2,3.Pressure chamber's sleeve 1 be circumferentially laid with at least two through holes (in the present embodiment, pressure chamber's sleeve 1 be circumferentially laid with three through holes), be provided with one in each through hole and put in spring lock shotpin 2 in pressure chamber's sleeve 1, spring lock shotpin 2 is sealed and matched by lock pin O-ring seal 24 and through-hole wall, and spring lock shotpin 2 also can slide in through hole.Energy-storaging spring seat 4 is hollow structure, energy-storaging spring seat 4 to be located in pressure chamber's sleeve 1 and to be slidably matched with the inwall of pressure chamber's sleeve 1, top cover 6 is hollow structure and is arranged on the top of pressure chamber's sleeve 1 by screw 14, top cover 6 and pressure chamber's sleeve 1 are sealed and matched, one end of energy-storaging spring 5 is pressed on energy-storaging spring seat 4, the other end of energy-storaging spring 5 is pressed on top cover 6, and energy-storaging spring seat 4 is pressed on spring lock shotpin 2.Puncture cutter 3 for hollow structure, puncturing cutter 3 is arranged on below the middle part of energy-storaging spring seat 4, in the present embodiment, punctures cutter 3 for hollow tube, one end of hollow tube is connected to below the middle part of energy-storaging spring seat 4 by ring flange, the other end of hollow tube is pyramidal structure.Sealing aluminium flake 7 is arranged in the hollow hole of top cover 6, and sealing plug 8 to screw in the hollow hole of top cover 6 and is pressed on sealing aluminium flake 7, and sealing aluminium flake 7 is coordinated with the hollow hole inner wall sealing of top cover 6 by O-ring seal 15.
Lock pin driving mechanism comprises tractive magnet 16, tooth bar 17, orienting sleeve 18, tooth bar reset components 19, gear and cam mechanism 20, guard shield 21 and guard shield lock-screw 22.Tooth bar 17 is respectively equipped with an orienting sleeve 18 near two ends, tooth bar 17 and orienting sleeve 18 are slidably matched, one end of tooth bar 17 arranges tractive magnet 16, and this tractive magnet 16 slides on orienting sleeve 18 for driving tooth bar 17, arranges tooth bar reset components 19 at the other end of tooth bar 17.Wheel and rack 17 tooth engagement on gear and cam mechanism 20, cam slidably contacts with spring lock shotpin 2, in the process that cam rotates, cam can promote spring lock shotpin 2 and move in pressure chamber's sleeve 1, after cam disengages spring lock shotpin 2, under the effect of back-moving spring 23, spring lock shotpin 2 outwards movement.Guard shield 21 is set outside gear and cam mechanism 20, is connected by guard shield lock-screw 22 between guard shield 21.
Second time pressure chamber 10 is arranged on the top of first time pressure chamber 9, the bottom of pressure chamber's sleeve 1 of second time pressure chamber 10 coordinates with the top seal of pressure chamber's sleeve 1 of first time pressure chamber 9, and second time pressure chamber 10 punctures the sealing aluminium flake 7 of cutter 3 aligning for the first time in pressure chamber 9.
When using this three axles coal and non-coal repeatedly outstanding test pressure relief device is tested, step is as follows:
1) first time pressure chamber 9 is arranged on the top of main pressure chamber 11, the bottom of pressure chamber's sleeve 1 of first time pressure chamber 9 is coordinated with the top seal of the confined pressure chamber upper cover 12 of main pressure chamber 11, and sealing aluminium flake 13 in main pressure chamber 11 aimed at by the cutter 3 that punctures for the first time in pressure chamber 9.
2) start Data Control and acquisition system, the temperature in monitoring first time pressure chamber 9 and for the second time pressure chamber 10 and the change of gaseous tension, and it is gathered.
3) to first time pressure chamber 9 and second time pressure chamber 10 in be filled with methane gas.
4) after everything in readiness, by lock pin driving mechanism, the spring lock shotpin 2 in first time pressure chamber 9 is shifted out in pressure chamber's sleeve 1, the energy-storaging spring seat 4 of pressure chamber 9 moves down for the first time, the cutter 3 that punctures in first time pressure chamber 9 punctures sealing aluminium flake 13 in main pressure chamber 11, produces once outstandingly to reach quick pressure releasing.
5) by lock pin driving mechanism, the spring lock shotpin 2 in second time pressure chamber 10 is shifted out in pressure chamber's sleeve 1, the energy-storaging spring seat 4 of second time pressure chamber 10 moves down, the cutter 3 that punctures in second time pressure chamber 10 punctures sealing aluminium flake 7 in first time pressure chamber 9, produces that secondary is outstanding reaches quick pressure releasing; In whole experimentation, Real-Time Monitoring and collection are carried out to each data of test.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. three axle coal and non-coal repeatedly outstanding test pressure relief device, is characterized in that, comprise first time pressure chamber (9) and second time pressure chamber (10);
Pressure chamber of described first time (9) and second time pressure chamber (10) include pressure chamber's sleeve (1), spring lock shotpin (2), puncture cutter (3), energy-storaging spring seat (4), energy-storaging spring (5), top cover (6), sealing aluminium flake (7) and sealing plug (8), described pressure chamber sleeve (1) is circumferentially laid with at least two through holes, and be provided with one in each through hole and put in spring lock shotpin (2) in pressure chamber's sleeve (1), described spring lock shotpin (2) and through hole slide and be sealed and matched, described energy-storaging spring seat (4) is hollow structure, energy-storaging spring seat (4) to be located in pressure chamber's sleeve (1) and to be slidably matched with the inwall of pressure chamber's sleeve (1), described top cover (6) is for hollow structure and be arranged on the top of pressure chamber's sleeve (1), and top cover (6) and pressure chamber's sleeve (1) are sealed and matched, one end of described energy-storaging spring (5) is pressed on energy-storaging spring seat (4), and the other end of energy-storaging spring (5) is pressed on top cover (6), and described energy-storaging spring seat (4) is pressed on spring lock shotpin (2), described to puncture cutter (3) be hollow structure, punctures cutter (3) and be arranged on below the middle part of energy-storaging spring seat (4), described sealing aluminium flake (7) is arranged in the hollow hole of top cover (6), and sealing plug (8) to screw in the hollow hole of top cover (6) and is pressed in sealing aluminium flake (7), and sealing aluminium flake (7) coordinates with the hollow hole inner wall sealing of top cover (6), described lock pin driving mechanism comprises tractive magnet (16), tooth bar (17), orienting sleeve (18), tooth bar reset components (19), gear and cam mechanism (20), guard shield (21) and guard shield lock-screw (22), tooth bar (17) is respectively equipped with an orienting sleeve (18) near two ends, tooth bar (17) and orienting sleeve (18) are slidably matched, one end of tooth bar (17) arranges tractive magnet (16), tractive magnet (16) is for driving tooth bar (17) in the upper slip of orienting sleeve (18), at the other end of tooth bar (17), tooth bar reset components (19) is set, wheel and rack (17) tooth engagement on gear and cam mechanism (20), cam slidably contacts with spring lock shotpin (2), in the process that cam rotates, it is mobile in pressure chamber's sleeve (1) that cam can promote spring lock shotpin (2), after cam disengages spring lock shotpin (2), under the effect of back-moving spring (23), spring lock shotpin (2) outwards movement, outside gear and cam mechanism (20), guard shield (21) is set, connected by guard shield lock-screw (22) between guard shield (21),
Described second time pressure chamber (10) is arranged on the top of first time pressure chamber (9), the bottom of pressure chamber's sleeve (1) of second time pressure chamber (10) coordinates with the top seal of pressure chamber's sleeve (1) of first time pressure chamber (9), the sealing aluminium flake (7) punctured on cutter (3) aligning first time pressure chamber (9) in second time pressure chamber (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310375239.2A CN103439461B (en) | 2013-08-26 | 2013-08-26 | Triaxial coal and gas multi-outbursting test pressure-relief device |
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| CN201310375239.2A CN103439461B (en) | 2013-08-26 | 2013-08-26 | Triaxial coal and gas multi-outbursting test pressure-relief device |
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| CN103439461A CN103439461A (en) | 2013-12-11 |
| CN103439461B true CN103439461B (en) | 2015-03-04 |
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| CN201310375239.2A Expired - Fee Related CN103439461B (en) | 2013-08-26 | 2013-08-26 | Triaxial coal and gas multi-outbursting test pressure-relief device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103645294B (en) * | 2013-12-24 | 2015-06-10 | 重庆大学 | High-pressure gas coal breaking experimental device |
| CN113049772B (en) * | 2021-03-22 | 2023-07-21 | 南通市飞宇石油科技开发有限公司 | Continuous triaxial coal and gas outburst simulation experiment device |
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2013
- 2013-08-26 CN CN201310375239.2A patent/CN103439461B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN201464451U (en) * | 2009-07-27 | 2010-05-12 | 上海莫克电子技术有限公司 | Detection device for detecting gas in closed vessel |
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