CN204287148U - Unitary coal and gas adsorption desorb and outstanding test unit - Google Patents
Unitary coal and gas adsorption desorb and outstanding test unit Download PDFInfo
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- CN204287148U CN204287148U CN201420770845.4U CN201420770845U CN204287148U CN 204287148 U CN204287148 U CN 204287148U CN 201420770845 U CN201420770845 U CN 201420770845U CN 204287148 U CN204287148 U CN 204287148U
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Abstract
The utility model discloses a kind of Unitary coal and gas adsorption desorb and outstanding test unit, comprise a cylindrical shape coal sampling mill, coal sampling mill outer wall is provided with some pressure and temperature sensors, coal sampling mill one end is installed with hydraulic loaded and charger, the other end is provided with blowout of coal and gas mouth, and at blowout of coal and gas mouth, place is provided with quick release mechanism; Hydraulic loaded and charger comprise a piston rod, piston rod is arranged a piston matched with coal sampling mill inner chamber, piston-rod end and face formula are inflated loading disc and are connected, piston and face formula inflation loading disc lay respectively in coal sampling mill in two individual cavity, and piston and face formula inflation loading disc communicate with the Hydraulic Station interface of two on coal sampling mill outer wall respectively with the space between longitudinal baffle; The utility model can study moulded coal at differently stress, different gas pressure Coal Under to the adsorption-desorption characteristics of gas and coal and gas prominent mechanism.
Description
Technical field
The utility model belongs to coal scientific research technical field, particularly a kind of for carrying out Unitary coal under differently stress, different gas pressure condition and gas adsorption desorb and outstanding test unit.
Background technology
At present, coal and gas prominent is a kind of extremely complicated dynamic buckling phenomenon occurring in underground coal mine, that underground coal mine produces one of the most serious disaster, coal and rock can be caused to hit or bury personnel in the pit, destroy the accidents such as down-hole facility, even destroy whole workplace, negative effect is very severe.Because of the coal and gas prominent occurring in underground coal mine have the time short, endanger the features such as large, carry out the dangerous large cause of comprehensive enforcement research to on-the-spot coal and gas prominent process, scholars are main research and the exploration relying on laboratory model research technique to carry out coal and gas prominent mechanism at present.
In coal and gas prominent mechanism, " combined action hypothesis " is extensively approved because considering the factors such as the physico-mechanical properties of terrestrial stress, gas pressure and coal comprehensively.But the real mechanism of action that each leisures of factor such as the physico-mechanical properties of terrestrial stress, gas pressure and coal are given prominence in process is not correctly disclosed yet.Due to the nonlinearity of coal and gas prominent, physical simulating method research is adopted to be the method generally adopted at present.
At present, domestic and international related scientific research mechanism has carried out a large amount of coal and gas prominent resemble simulation test research work, and have developed a series of coal and gas prominent simulation test device, present Research is as follows:
(1) application number is that the Chinese patent of 200810069276.X discloses a kind of coal and gas prominent simulator stand, utility model is by how group hydraulic jack is to coal sample axial pressure, in coal sample, gas is filled by inflation inlet, device aspis is implemented mechanization by quick release mechanism and is automatically controlled, high speed opening aspis.
(2) application number be 200810233048.1 Chinese patent disclose a kind of coal and gas prominent mould, offer air-filled pore in the central authorities of base plate, in this air-filled pore, be installed into valve; Pilot hole is offered at the middle part of front end-plate, installs aspis in this pilot hole.
(3) application number be 200910103154.2 Chinese patent disclose a kind of coal and gas prominent combined test apparatus, this device comprises coal sampling mill, terrestrial stress simulated loading system and air pressure loading equipemtn, the Shili Capsule of terrestrial stress simulated loading system and charger are arranged in closed container, the pressurizing channel of pressurising equipment communicates with capsule wall interlayer, charger comprises at least two loading blocks, coal sampling mill is surrounded by loading blocks, gap is there is, by pressure acquisition device and cameras view test findings between adjacent load block.But this device can not carry out terrestrial stress loading.
(4) application number be 200910103155.7 Chinese patent disclose a kind of coal and gas prominent test quick pressure releasing coal sampling mill, comprise coal sampling mill body, coal sampling mill body arranges blowout of coal and gas mouth and pressed gas import, blowout of coal and gas mouth arranges operation valve, before the inherent operation valve of coal sampling mill body, barrier film is set, cavity between barrier film and operation valve is counter balance pocket, and counter balance pocket arranges pressure equilibrium gas feed.Pressure release adopts barrier film, and process of the test is complicated, is inconvenient to operate.
(5) application number be 200910103157.6 Chinese patent disclose a kind of coal and gas prominent test unit, comprise coal sampling mill, air pressure-loading equipment, coal sampling mill arranges blowout of coal and gas mouth, blowout of coal and gas mouth arranges operation valve, the pressurized gas passage of air pressure-loading equipment communicates with coal sampling mill inside, before the inherent operation valve of coal sampling mill, barrier film is set, cavity between barrier film and operation valve is the counter balance pocket being connected to equilibrium air pressure loading equipemtn, also comprise the pressure acquisition device be arranged in coal sampling mill and the video camera being arranged on coal sampling mill outside, the location transparency that coal sampling mill is relative with video camera is arranged.But this device can not carry out terrestrial stress loading.
(6) application number be 201010149061.6 Chinese patent disclose a kind of coal and gas prominent simulation test device, comprise steel cylinder, be arranged on the ring flange at steel cylinder two ends, gas charging system and data acquisition system (DAS); The ring flange being arranged on steel cylinder one end is the ring flange with center pit, and arranges burst disk at the non-installation side of this ring flange and steel cylinder.But this device can not carry out terrestrial stress loading.
(7) application number be 201110021828.1 Chinese patent disclose a kind of coal and non-coal experiment simulator, comprise coal sampling mill and air pressure loading equipemtn, at least one is provided with for placing the coal sample die cavity of coal sample in described coal sampling mill, the pressurized gas passage that air pressure-loading equipment comprises gas gas cylinder and is connected with gas gas cylinder, the blowout of coal and gas mouth be communicated with coal sample die cavity when coal sampling mill being provided with work, ejiction opening is provided with the control device for controlling ejiction opening conducting, the first camera for taking pictures to the inner coal sample of coal sample die cavity is outside equipped with at coal sampling mill, ejiction opening is provided with the second camera for taking blowout of coal and gas.
(8) application number is Chinese patent coal and gas prominent simulation experiment system when disclosing a kind of stone door punching coal of 201110324127.5, it comprises the casing that top is provided with opening, this box opening is configured with a loading steel plate, top board and base plate is equipped with in airtight cavity, coal seam is equipped with between top board and base plate, this coal seam and surface level form a pitch angle, outstanding simulation tunnel extends until cross with coal seam in base plate, gas adopts face formula inflatable structure, and aspis is arranged opens hermetically-sealed construction fast.
The model test stand device system of the above-mentioned unit of comprehensive analysis, also has the following disadvantages:
1. above-mentioned simulation test device cannot realize the test of coal and non-coal characterization of adsorption;
2. above-mentioned test unit is no matter large or small, and its internal model is main mainly with rectangular parallelepiped, easily forms stress concentrate during loading at model edge;
3. complicated operation in above-mentioned model test apparatus process of the test, major part only can observe protrusion phenomenon qualitatively, can not the transient changing rule of the parameter such as pressure and temperature in disposable complete collection coal and gas prominent process of the test and protrusion phenomenon, realize quantitative test.
In order to study different condition terrestrial stress and gas pressure Coal Under and gas absorption and coal and gas prominent mechanism and occurrence condition better, need to develop a kind of coal and non-coal adsorption-desorption and outstanding test unit, to explain coal and gas prominent characterization of adsorption and genesis mechanism.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, there is provided a kind of Unitary coal and gas adsorption desorb and outstanding test unit, it can study moulded coal at differently stress, different gas pressure Coal Under to the adsorption-desorption characteristics of gas and coal and gas prominent mechanism.
For achieving the above object, the utility model adopts following technical proposals:
A kind of Unitary coal and gas adsorption desorb and outstanding test unit, comprise a cylindrical shape coal sampling mill, coal sampling mill outer wall is provided with some pressure-temperature sensors that can detect moulded coal temperature and gaseous tension, one end of described coal sampling mill is installed with can be stretched into vertically wherein and can apply hydraulic loaded and the charger of axially stress, the blowout of coal and gas mouth that the other end is communicated with coal sampling mill when being provided with work, is provided with the quick release mechanism for controlling ejiction opening conducting at blowout of coal and gas mouth place; Hydraulic loaded and charger comprise a piston rod, the piston rod being positioned at coal sampling mill arranges a piston matched with coal sampling mill inner chamber, be positioned over face formula that the coal sample in coal sampling mill contacts when piston-rod end and test to inflate loading disc and connect, piston and face formula inflation loading disc lay respectively in two individual cavity of being separated by longitudinal baffle in coal sampling mill, and piston and face formula inflation loading disc communicate with the Hydraulic Station interface of two on coal sampling mill outer wall respectively with the space between longitudinal baffle;
Apply axially stress by the hydraulic jack of hydraulic loaded and charger, confined pressure is provided by the counter-force of the internal chamber wall of coal sampling mill, realizes accurate triaxiality and loads, by hydraulic control oil cylinder working-pressure, and the different stress conditions of simulation moulded coal;
Described piston rod center is provided with duct, one end, duct is connected with a port of the threeway of piston rod outside, two other port of threeway is connected with vacuum extraction equipment with gas gas cylinder respectively, and the air slot that the duct other end is inflated on loading disc with face formula communicates.
Described face formula inflation loading disc employing application number is the configuration and techniques of 201210227229.X patent; That is: inflation panel is comprised, inflation panel one end is connected with gas ducting, and gas ducting is provided with gas-filled switching tube, and described inflation panel comprises panel, panel is provided with the air slot intersecting in length and breadth and be communicated with, and air slot is communicated with gas ducting by the filling channel of panel end; Lower floor's sieve plate, woven wire and upper strata sieve plate is provided with successively above described panel, the edge conjunction place of described lower floor sieve plate, woven wire, upper strata sieve plate and panel is sealed by rubber weather strip, and fixing press strip is set in the upper sieve panel edges of topmost, lower floor's sieve plate, woven wire, upper strata sieve plate are fixed on panel by bolt by fixing press strip.
The ejiction opening of Φ 60mm is provided with in the middle of described quick release mechanism, comprise upper and lower support, upper bracket is hinged with buckle, lower carriage is hinged with the C type buckle that can clamp with buckle and unclamp, be provided with rotary screw in the middle part of C type buckle, rotary screw end connects the sealing pad that can seal ejiction opening.
By the activity of rotary screw adjustable sealing dish, during sealing, C type buckle and buckle are blocked, regulate rotary screw compression seal dish sealing blowout of coal and gas mouth; During release, C type buckle is separated with buckle, is separated rapidly with blowout of coal and gas mouth with Action of Gravity Field lower seal dish at pressure.
Described cylindrical shape coal sampling mill, hydraulic loaded equipment, face formula inflation loading disc and quick release mechanism are all fixedly installed on bracing frame, front support frame is metal support, rear portion is hinged on concrete-pile, and middle part is hinged on lifting jack, by lifting jack lift adjustment aspis angle.
The described threeway be connected with vacuum extraction equipment with gas gas cylinder is provided with gauge tap.
Described formula inflation loading disc is disk structure part, the inner chamber transition fit of its external diameter and cylindrical shape coal sampling mill, and can ensure the impermeability of inner chamber.
Described pressure-temperature sensor, by data line connecting secondary instrument respectively, changes for testing coal and non-coal absorption and giving prominence to gaseous tension and coal temperature in process.Piston rod is outside, installation position, threeway front end displacement sensor, the displacement of measuring surface formula inflation loading disc.
Utilize a test method for Unitary coal and gas adsorption desorb and outstanding test unit, comprise two stages, the first stage is the adsorption and desorption experiment of coal and non-coal, and subordinate phase is coal and gas prominent test;
The adsorption-desorption test procedure of coal and non-coal is as follows:
1) rise middle part lifting jack and regulate coal sampling mill inclination angle, coal sample is contained in coal sampling mill, threeway one end is connected gas gas cylinder, the other end connects vacuum extraction equipment, hydraulic loaded equipment connection Hydraulic Station, settles high-speed camera, and connects a whole set of described test unit;
2) use hydraulic loaded equipment to wanting shaping coal sample load application, shaping according to pre-set forming pressure gradation; After coal sample is shaping, close blowout of coal and gas mouth, check test container air-tightness;
3) with vacuum pump, coal sampling mill is vacuumized, with hydraulic loaded equipment, pressure keep pressure stability is applied to moulded coal;
4) by purity be 99.9% methane be filled with coal sampling mill by predetermined pressure, treat that coal sample room pressure reaches balance, portion gas is adsorbed, portion gas is still among residual volume with free state, the known methane volumetric being filled with or releasing, the free volume of deduction residual volume, is adsorption volume;
5) repeat such mensuration, obtain each pressure stage equalized pressure and adsorbent accumulated amount, couple together and be adsorption isothermal; Complete the adsorption-desorption test of coal and non-coal;
Coal and gas prominent test is as follows:
In fact moulded coal after axially stress and gas pressure reach predetermined value in outstanding test unit is equivalent to a coal seam containing " gas ", throw open the blowout of coal and gas mouth utilizing quick release mechanism to carry out temporary sealing, now due to the effect of gas pressure and pressure simulation terrestrial stress, the energy be stored in coal sampling mill is made to discharge suddenly from blowout of coal and gas mouth and complete the outstanding test of coal and non-coal.
Investigate experimental phenomena (outstanding, extrude or incline, do not give prominence to), mechanical property of coal seam and loading environment can be disclosed to the influence factor of coal and gas prominent and mechanism of action according to test condition.
Outstanding parameter to be determined has: coal sample forming pressure, outstanding time oil cylinder working-pressure, gas pressure, thruster forward travel distance and coal body decrement, gas bearing capacity, gas flow, intensity of outburst, outstanding distance, outstanding coal particle size, outstanding time etc.Such the utility model can study moulded coal at differently stress, different gas pressure Coal Under to the adsorption-desorption characteristics of gas and moulded coal in differently stress, different gas pressure Coal Under and Gas Outburst characteristic.
The beneficial effects of the utility model are:
1, the utility model applies axially stress by hydraulic jack, and confined pressure is provided by the counter-force of internal chamber wall, realizes accurate triaxiality and loads, by hydraulic control oil cylinder working-pressure, and the different stress conditions of simulation moulded coal.Coal body decrement is measured by displacement transducer, and the mechanical work that combined axis is done to Stress calculation hydraulic loaded equipment media.
2, the loading of the utility model coal sample and the loading piston rod of test unit are designed with gas orifice and duct, the outside connecting tee of pore, be connected with vacuum extraction equipment with gas gas cylinder by threeway, realize vacuumizing and methane gas filling, pore and face formula are inflated loading disc and are connected.Realize first moulded coal being vacuumized being filled with gas again, simulate the adsorbed state of coal and non-coal more really.
3, coal sample loading of the present utility model and test unit are provided with the pressure-temperature sensor for detecting moulded coal temperature and gaseous tension, can gas pressure be controlled thus simulate different gas pressures, realizing the adsorption-desorption of moulded coal under different stress and gas pressure condition and outstanding test quantitative examination.
4, device aspis implements Mechanical course by quick release mechanism, opens aspis instantaneously at a high speed, makes its unexpected pressure release, simulate digging in-situ more really and cause coal and gas prominent.
5, the high-speed camera for recording coal and gas prominent transient phenomenon is settled in device ejiction opening front, and catch at a high speed with coal and non-coal transient phenomenon, recording of video can confirm mutually with pressure sensor data.
6, the utility model structure is simple, easy to operate and cost of manufacture is low, realizes the object of quantitative simulation and research coal and gas prominent.
Accompanying drawing explanation
Fig. 1 is the utility model instantiation structural representation;
Fig. 2 is the utility model instantiation structure division cut-open view;
Fig. 3 is quick release device structural representation in Fig. 1;
Fig. 4 is this employing the utility model test method schematic diagram;
Wherein 1. Hydraulic Station interfaces, 2. formula inflation loading disc, 3. coal sampling mill, 4. pressure and temperature sensor, 5. quick release mechanism, 5-1. sealing pad, 5-2. upper bracket, 5-3. buckle, 5-4 C type buckle, 5-5. lower carriage, 6. threeway, lifting jack 7., 8. bracing frame, 9. moulded coal, 10. high-speed camera, 11. vacuum pumps, 12. Unitary coals and gas adsorption desorb and outstanding test unit, 13. high pressure gas gas cylinders, 14. Hydraulic Stations.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1 and Figure 2: Unitary coal and gas adsorption desorb and outstanding test unit 12, comprise a cylindrical shape coal sampling mill 3, coal sampling mill 3 outer wall is provided with some pressure and temperature sensors 4 that can detect moulded coal temperature and gaseous tension, one end of coal sampling mill 3 is installed with can be stretched into vertically wherein and can apply hydraulic loaded and the charger of axially stress, the blowout of coal and gas mouth that the other end is communicated with coal sampling mill 3 when being provided with work, is provided with the quick release mechanism 5 for controlling ejiction opening conducting at blowout of coal and gas mouth place; Hydraulic loaded and charger comprise a piston rod, the piston rod being positioned at coal sampling mill arranges a piston matched with coal sampling mill inner chamber, be positioned over face formula that the coal sample in coal sampling mill contacts when piston-rod end and test to inflate loading disc 2 and connect, piston and face formula inflation loading disc 2 lay respectively in two individual cavity of being separated by longitudinal baffle in coal sampling mill 3, and piston and face formula inflation loading disc 2 communicate with two Hydraulic Station interfaces 1 on coal sampling mill 3 outer wall respectively with the space between longitudinal baffle;
Piston rod center is provided with duct, one end, duct is connected with a port of the threeway 6 of piston rod outside, two other port of threeway 6 is connected with vacuum extraction equipment with gas gas cylinder respectively, and the air slot that the duct other end is inflated on loading disc 2 with face formula communicates.The threeway 6 be connected with vacuum extraction equipment with gas gas cylinder is provided with gauge tap.
Cylindrical shape coal sampling mill 3, hydraulic loaded and charger, face formula inflation loading disc 2 and quick release mechanism 5 are all fixedly installed on bracing frame 8, front support frame is metal support, rear portion is hinged on concrete-pile, middle part is hinged on lifting jack 7, by lifting jack 7 lift adjustment aspis angle.
Face formula inflation loading disc employing application number is the configuration and techniques of 201210227229.X patent; That is: inflation panel is comprised, inflation panel one end is connected with gas ducting, and gas ducting is provided with gas-filled switching tube, and described inflation panel comprises panel, panel is provided with the air slot intersecting in length and breadth and be communicated with, and air slot is communicated with gas ducting by the filling channel of panel end; Lower floor's sieve plate, woven wire and upper strata sieve plate is provided with successively above described panel, the edge conjunction place of described lower floor sieve plate, woven wire, upper strata sieve plate and panel is sealed by rubber weather strip, and fixing press strip is set in the upper sieve panel edges of topmost, lower floor's sieve plate, woven wire, upper strata sieve plate are fixed on panel by bolt by fixing press strip.Face formula inflation loading disc is disk structure part, the inner chamber transition fit of its external diameter and cylindrical shape coal sampling mill, and can ensure the impermeability of inner chamber.
As shown in Figure 3: the ejiction opening in the middle of quick release mechanism 5 being Φ 60mm, comprising: lower carriage 5-5, upper bracket 5-2, sealing pad 5-1, buckle 5-3, C type buckle 5-4.C type buckle 5-4 and lower carriage 5-5 is hinged, and buckle 5-3 and upper bracket 5-2 is hinged, and sealing pad 5-1 is connected by rotary screw, by the activity of rotary screw adjustable sealing dish with C type buckle 5-4.During sealing, C type buckle 5-4 and buckle 5-3 is blocked, regulate rotary screw to make sealing pad 5-1 seal ejiction opening; During release, C type buckle 5-4 is separated with buckle 5-3, is separated rapidly with ejiction opening with Action of Gravity Field lower seal dish 5-1 at pressure.
Pressure and temperature sensor 4, by data line connecting secondary instrument respectively, changes for testing coal and non-coal absorption and giving prominence to gaseous tension and coal temperature in process.Piston rod is outside, installation position, threeway front end displacement sensor, the displacement of measuring surface formula inflation loading disc 2.
As shown in Figure 4, the high-speed camera 10 for recording coal and gas prominent transient process is placed in the blowout of coal and gas mouth front of Unitary coal and gas adsorption desorb and outstanding test unit, Hydraulic Station 14 by Hydraulic Station interface 1 for hydraulic loaded equipment provides motive power, high pressure gas gas cylinder 13 is connected with the duct on piston rod by threeway 6 with vacuum pump 11, realizes vacuumizing in coal sampling mill 3 and methane gas filling.。
Be divided into two stages when utilizing the utility model to test, the first stage is that the adsorption-desorption of coal and non-coal is tested, and is then coal and gas prominent test.
First rise middle part lifting jack and regulate coal sampling mill inclination angle, coal sample is contained in coal sampling mill 3, threeway 6 one end is connected high pressure gas gas cylinder 13, the other end connects vacuum pump 11, hydraulic loaded equipment connection Hydraulic Station, settles high-speed camera 10, and connects other instruments.With hydraulic loaded equipment to wanting shaping coal sample load application, shaping according to pre-set forming pressure gradation.After coal sample is shaping, close aspis, check test container air-tightness.With vacuum pump 11, coal sampling mill is vacuumized, with hydraulic loaded equipment pressure applied to moulded coal 9 and keep pressure stability.High-purity for high pressure 99.9% methane is filled with coal sampling mill.Treat that coal sample room pressure reaches balance, portion gas is adsorbed, and portion gas is still among residual volume with free state, the known methane volumetric being filled with (releasing), and the free volume of deduction residual volume, is adsorption volume.Repeat such mensuration, obtain each pressure stage equalized pressure and adsorbent accumulated amount, couple together and be adsorption isothermal.Complete the adsorption and desorption experiment of coal and non-coal.
Treat that terrestrial stress and gas pressure reach the predetermined value processus aboralis moulded coal gone out in analogue means and be in fact equivalent to a coal seam containing " gas ", throw open the ejiction opening utilizing quick release mechanism to carry out temporary sealing, now due to the effect of gas pressure and pressure simulation terrestrial stress, the energy be stored in coal sampling mill is made to discharge suddenly from aspis and complete the outstanding test of coal and non-coal.
Investigate experimental phenomena (outstanding, extrude or incline, do not give prominence to), mechanical property of coal seam and loading environment can be disclosed to the influence factor of coal and gas prominent and mechanism of action according to test condition.Outstanding parameter to be determined has: coal sample forming pressure, oil cylinder working-pressure, gas pressure, thruster forward travel distance and coal body decrement time outstanding, gas bearing capacity, gas flow, intensity of outburst, outstanding distance, outstanding coal particle size, outstanding time etc.Such the utility model can study moulded coal at differently stress, different gas pressure Coal Under to the adsorption-desorption characteristics of gas and moulded coal in differently stress, different gas pressure Coal Under and Gas Outburst characteristic.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (8)
1. a Unitary coal and gas adsorption desorb and outstanding test unit, it is characterized in that, comprise a cylindrical shape coal sampling mill, coal sampling mill outer wall is provided with some pressure and temperature sensors that can detect moulded coal temperature and gaseous tension, one end of described coal sampling mill is installed with can be stretched into vertically wherein and can apply hydraulic loaded and the charger of axially stress, the blowout of coal and gas mouth that the other end is communicated with coal sampling mill when being provided with work, is provided with the quick release mechanism for controlling ejiction opening conducting at blowout of coal and gas mouth place; Hydraulic loaded and charger comprise a piston rod, the piston rod being positioned at coal sampling mill arranges a piston matched with coal sampling mill inner chamber, be positioned over face formula that the coal sample in coal sampling mill contacts when piston-rod end and test to inflate loading disc and connect, piston and face formula inflation loading disc lay respectively in two individual cavity of being separated by longitudinal baffle in coal sampling mill, and piston and face formula inflation loading disc communicate with the Hydraulic Station interface of two on coal sampling mill outer wall respectively with the space between longitudinal baffle.
2. device as claimed in claim 1, it is characterized in that, described piston rod center is provided with duct, one end, duct is connected with a port of the threeway of piston rod outside, two other port of threeway is connected with vacuum extraction equipment with gas gas cylinder respectively, and the air slot that the duct other end is inflated on loading disc with face formula communicates.
3. device as claimed in claim 1, it is characterized in that, ejiction opening is provided with in the middle of described quick release mechanism, quick release mechanism comprises upper and lower support, upper bracket is hinged with buckle, lower carriage is hinged with the C type buckle that can clamp with buckle and unclamp, release is buckled and is provided with rotary screw by screw thread, and rotary screw end connects the sealing pad that can seal blowout of coal and gas mouth;
The activity of sealing pad can be regulated by rotary screw, during sealing, release button is blocked with snap fastener, adjusting screw compression seal dish sealing blowout of coal and gas mouth; During release, C type buckle is separated with buckle, is separated rapidly with blowout of coal and gas mouth with Action of Gravity Field lower seal dish at pressure.
4. device as claimed in claim 1, it is characterized in that, described cylindrical shape coal sampling mill, hydraulic loaded equipment, face formula inflation loading disc and quick release mechanism are all fixedly installed on bracing frame, front support frame is metal support, rear portion is hinged on concrete-pile, middle part is hinged on lifting jack, by lifting jack lift adjustment aspis angle.
5. device as claimed in claim 1, it is characterized in that, the described threeway be connected with vacuum extraction equipment with gas gas cylinder is provided with gauge tap.
6. device as claimed in claim 1, is characterized in that, described formula inflation loading disc is disk structure part, the inner chamber transition fit of its external diameter and cylindrical shape coal sampling mill, and can ensure the impermeability of inner chamber.
7. device as claimed in claim 1, is characterized in that, described pressure-temperature sensor, by data line connecting secondary instrument respectively, changes for testing coal and non-coal absorption and giving prominence to gaseous tension and coal temperature in process; Piston rod is outside, installation position, threeway front end displacement sensor, the displacement of measuring surface formula inflation loading disc.
8. device as claimed in claim 1, is characterized in that, the high-speed camera for recording coal and gas prominent transient process is placed in described blowout of coal and gas mouth front.
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| CN201420770845.4U CN204287148U (en) | 2014-12-09 | 2014-12-09 | Unitary coal and gas adsorption desorb and outstanding test unit |
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| CN201420770845.4U CN204287148U (en) | 2014-12-09 | 2014-12-09 | Unitary coal and gas adsorption desorb and outstanding test unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820084A (en) * | 2015-05-14 | 2015-08-05 | 安徽理工大学 | Coal and gas outburst similarity simulation test method based on geological mechanical model test |
| CN105784490A (en) * | 2016-03-01 | 2016-07-20 | 山东科技大学 | Visual monitoring experiment device for coal body damage under gas pressure relief condition |
-
2014
- 2014-12-09 CN CN201420770845.4U patent/CN204287148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820084A (en) * | 2015-05-14 | 2015-08-05 | 安徽理工大学 | Coal and gas outburst similarity simulation test method based on geological mechanical model test |
| CN105784490A (en) * | 2016-03-01 | 2016-07-20 | 山东科技大学 | Visual monitoring experiment device for coal body damage under gas pressure relief condition |
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