CN105758763A - Multifunctional coal adsorption/desorption gas parameter determination testing device and method - Google Patents
Multifunctional coal adsorption/desorption gas parameter determination testing device and method Download PDFInfo
- Publication number
- CN105758763A CN105758763A CN201610112973.3A CN201610112973A CN105758763A CN 105758763 A CN105758763 A CN 105758763A CN 201610112973 A CN201610112973 A CN 201610112973A CN 105758763 A CN105758763 A CN 105758763A
- Authority
- CN
- China
- Prior art keywords
- valve
- coal
- chamber
- adsorption
- adsorption chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
Abstract
The invention provides a multifunctional coal adsorption/desorption gas parameter determination testing device and method. The testing device comprises a high-pressure gas bottle, an inflation chamber, a granular coal adsorption chamber, a block-shaped coal adsorption chamber, a data acquisition unit and a computer, wherein the inflation chamber is connected with the high-pressure gas bottle, a vacuum pump and a back pressure valve respectively through first pipelines; a decompression valve and a first valve are arranged between the high-pressure gas bottle and the inflation chamber; a second valve is arranged between the vacuum pump and the inflation chamber; a third valve is arranged between the back pressure valve and the inflation chamber; one side of the inflation chamber is connected with the granular coal adsorption chamber through a second pipeline and the other side of the inflation chamber is connected with the block-shaped coal adsorption chamber through a third pipeline; the second pipeline is provided with a second pressure gauge and a fourth valve; the third pipeline is provided with a third pressure gauge and a fifth valve; the data acquisition unit is used for acquiring data and transmitting the data to the computer. The testing device provided by the invention can be used for measuring the adsorption amount of coal bodies with different grain diameters, the adsorption amount of block-shaped coal, the deformation amount and a relation thereof, and a coal body adsorption constant number.
Description
Technical field
The present invention relates to pit mining field, particularly relate to a kind of multifunctional coal adsorption/desorption Gas explosion burns determination test device and method.
Background technology
China is one of country that generation Gas Disaster is the most serious in the world, and the safety of gas accident serious threat underground work personnel governs the safety in production in colliery.The mensuration of coal absorption constant is for grasping the characterization of adsorption of coal, instructing coal bed gas ground mining to have important meaning.Coal adsorption gas content, by the impact of temperature, pressure, coal rank, moisture content, specific surface area etc., can be avoided it to affect for temperature, pressure, moisture content, and the impact that specific surface area is subject to coal particle size cannot be avoided.The coal absorption constant a generally measured, the coal particle that b value takes between 0.17～0.25mm according to MT/T752-1997 " coal methane adsorption quantity measuring method " regulation is tested, because particulate coal is different from the specific surface area of lumped coal, the coal absorption constant a measured with granular coal, b value predicts the certain error that block seam gas content exists, it was predicted that be worth not science.
The process of coal and gas prominent is generally along with the deformation and failure of coal body, and the deflection of coal body is one of important indicator affecting Coal body Instability.In process of production, coal body is constantly gushed out gas to work surface, and coal body will be deformed in the process of desorbing gas, and then be likely to bring out coal and gas prominent, and therefore in coal adsorption/desorption gas process, coal deformation amount is also an important parameter.
Current test apparatus can only measure absorption constant a, the b value of coal, it is impossible to simultaneously completes the determination test of granule coal body adsorbance and lumped coal body deformability amount under same gas pressure, temperature conditions, still Paniculate coal and lumped coal adsorbance can not be carried out contrast and probe into.
Therefore, it is necessary to a kind of better coal adsorption/desorption Gas explosion burns determination test device of design, to solve the problems referred to above.
Summary of the invention
For prior art Problems existing, the present invention provides the multifunctional coal adsorption/desorption Gas explosion burns determination test device and method of a kind of deflection that can measure the adsorption/desorption amount of different-grain diameter coal sample, absorption constant a, the b value of coal sample and lumped coal adsorption-desorption gas process.
To achieve these goals, the present invention adopts the following technical scheme that
nullA kind of multifunctional coal adsorption/desorption Gas explosion burns determination test device，Including gas cylinder、Plenum chamber、Particulate coal adsorption chamber、Lumped coal adsorption chamber、Data collecting instrument and computer，Described plenum chamber is connected to described gas cylinder by the first pipeline、Vacuum pump and counterbalance valve，Described first pipeline between described gas cylinder and described plenum chamber is provided with air relief valve and the first valve，The second valve it is provided with between described vacuum pump and described plenum chamber，The 3rd valve it is provided with between described counterbalance valve and described plenum chamber，Described plenum chamber is provided with the first Pressure gauge，The side of described plenum chamber is connected to described particulate coal adsorption chamber by the second pipeline，Opposite side is connected to described lumped coal adsorption chamber by the 3rd pipeline，Described second pipeline is provided with the second Pressure gauge and the 4th valve，Described 3rd pipeline is provided with the 3rd Pressure gauge and the 5th valve，Described data collecting instrument is connected to the first Pressure gauge、Second Pressure gauge、3rd Pressure gauge and described lumped coal adsorption chamber，For gathering data，And transfer data to described computer.
Further, described plenum chamber, described particulate coal adsorption chamber and described lumped coal adsorption chamber are positioned in water bath, and described water bath is connected to described data collecting instrument.
Further, described first valve, described second valve, described 3rd valve, described 4th valve and described 5th valve are pneumatic needle valve, the switch of described pneumatic needle valve and described air relief valve, described counterbalance valve and described vacuum pump is integrated in valve positioner, and described valve positioner is connected with described computer.
Further, being placed with block coal sample, described block coal sample is pasted with foil gauge in described lumped coal adsorption chamber, described foil gauge is connected to described data collecting instrument.
Further, described particulate coal adsorption chamber or/and described lumped coal adsorption chamber includes cylinder body, described cylinder body be arranged over cylinder cap, be provided with dome between described cylinder cap and described cylinder deck, being provided with aviation plug on described dome, described dome and described cylinder body are spirally connected locking by described cylinder cap.
Further, between top and the described dome of described cylinder body, it is provided with sealing ring, is provided with rectified filter screen in described cylinder body for coal sample and air inlet being separated.
A kind of method adopting above-mentioned multifunctional coal adsorption/desorption Gas explosion burns determination test device, including:
Step one: make coal sample, preparation graininess coal sample or/and block coal sample, is respectively placed in described particulate coal adsorption chamber or/and in described lumped coal adsorption chamber；
Step 2: open described gas cylinder, inputs the quality of coal sample, true density, apparent density, moisture content in described computer, arranges program parameter, makes described computer perform following steps:
A () opens described second valve and described 4th valve or/and described 5th valve, start described vacuum pump degassed, after degassed certain time, closes described second valve and described 4th valve or/and described 5th valve, closes described vacuum pump；
B () opens described first valve, regulate described air relief valve, inflate in described plenum chamber, making described inflation room pressure is P1, close described first valve and described air relief valve, open described 4th valve or/and described 5th valve, to described particulate coal adsorption chamber or/and inflate in described lumped coal adsorption chamber, when to make the blowing pressure be P2, close described 4th valve or/and described 5th valve；
(c) described graininess coal sample or/and described block coal sample respectively at described particulate coal adsorption chamber or/and described lumped coal adsorption chamber internal adsorption, absorption records described second Pressure gauge and described 3rd manometric numerical value after reaching balance；
Described computer or/and the change of gas pressure in described lumped coal adsorption chamber, calculates coal sample adsorbance, coal sample absorption constant according to described particulate coal adsorption chamber.
Further, vertical in described block coal sample it is pasted with foil gauge, described foil gauge is connected to described data collecting instrument, when measuring described block coal sample adsorbance, described data collecting instrument records the deflection of described coal sample, and undertaken organizing test by changing adsorptive pressure and temperature, record the relation of block coal sample adsorbance and deflection. more.
Further, when measuring described block coal sample deflection, after step 2 (c), open described counterbalance valve, it is gradually lowered the pressure of described counterbalance valve, record pressure is reduced to P3, P4 ... the deflection of block coal sample corresponding during desorbing balance under each pressure, records block coal sample and becomes the deflection of gradient desorption coal body.
Further, when described 4th valve or described 5th valve are opened simultaneously, described plenum chamber is inflated in described particulate coal adsorption chamber and described lumped coal adsorption chamber simultaneously, and described assay device measures the different coal sample of the specific surface area of equal in quality adsorbance under the same conditions；Described 4th valve closing, when described 5th valve is opened, described plenum chamber is individually inflated in described lumped coal adsorption chamber, measures the described block adsorbance of coal sample, deflection and relation thereof；Described 4th valve is opened, and during described five valve closing, described plenum chamber is individually inflated in described particulate coal adsorption chamber, measures adsorbance and the absorption constant of described graininess coal sample.
Beneficial effects of the present invention:
The two ends of plenum chamber are connected to particulate coal adsorption chamber and lumped coal adsorption chamber, assay device can measure different-grain diameter coal sample adsorption gas amount under identical gas pressure, identical temperature conditions, probe into the different-grain diameter impact on coal sample gas adsorption amount, it is possible to the gas bearing capacity of whole graininess coal body and block coal body is more predicted accurately；Adsorption/desorption amount and the deflection of lumped coal can be recorded by lumped coal adsorption chamber, analyze the relation between coal body adsorption/desorption amount and coal deformation, because Gas causes coal deformation amount in the recovery process of prediction coal seam, provide reliable foundation for prevention coal and gas prominent；Can also measuring the absorption constant of particulate coal and lumped coal, test result is exact science more.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention multi-functional coal body adsorption/desorption Gas explosion burns determination test device；
Fig. 2 is the sectional view of particulate coal adsorption chamber and lumped coal adsorption chamber in Fig. 1；
In figure, 1 gas cylinder, 2 air relief valve, 3 first valves, 4 first pipelines, 5 vacuum pumps, 6 second valves, 7 counterbalance valves, 8 the 3rd valves, 9 plenum chambers, 10 first Pressure gauges, 11 second pipelines, 12 second Pressure gauges, 13 the 4th valves, 14 particulate coal adsorption chambers, 15 the 3rd pipelines, 16 the 3rd Pressure gauges, 17 the 5th valves, 18 lumped coal adsorption chambers, 19 foil gauges, 20 wires, 21 data acquisition line concentrations, 22 computers, 23 valve positioners, 24 water baths, 25 cylinder bodies, 26 cylinder caps, 27 domes, 28 aviation plugs, 29 sealing rings, 30 rectified filter screens, 31 air inlets, 32 block coal samples, 33 graininess coal samples.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Need explanation, directional instruction in the embodiment of the present invention (such as up, down, left, right, before and after ...) is only for explaining relative position relation between each parts, motion conditions etc. under a certain particular pose (as shown in drawings), if this particular pose changes, then directionality instruction also correspondingly changes therewith.
It addition, relate to the description of " first ", " second " etc. in the present invention only for descriptive purposes, and it is not intended that instruction or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.Additionally; technical scheme between each embodiment can be combined with each other; but must be based on those of ordinary skill in the art are capable of; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme is absent from, also not within the protection domain of application claims.
Such as Fig. 1, the present invention provides a kind of multi-functional coal body adsorption/desorption Gas explosion burns determination test device, including gas cylinder 1, plenum chamber 9, particulate coal adsorption chamber 14, lumped coal adsorption chamber 18, data collecting instrument 20 and computer 22, gas cylinder 1 is connected to plenum chamber 9 by the first pipeline 4, and the both sides of plenum chamber 9 are respectively communicated to particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18.
Plenum chamber 9 is connected to gas cylinder 1, vacuum pump 5 and counterbalance valve 7 by the first pipeline 4, in the present embodiment, what gas cylinder 1 was built-in is methane gas, vacuum pump 5 is for pumping the gas in plenum chamber 9, particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18, and counterbalance valve 7 can realize becoming gradient and reduce gas pressure.The first pipeline 4 between gas cylinder 1 and plenum chamber 9 is provided with air relief valve 2 and the first valve 3, and air relief valve 2 is for regulating the gas pressure entered in plenum chamber 9, and the first valve 3 is then used for controlling the first pipeline 4 and opens or closes.Being provided with the second valve 6 between vacuum pump 5 and plenum chamber 9, the second valve 6, for controlling the switch of vacuum pump 5, is provided with the 3rd valve 8 between counterbalance valve 7 and plenum chamber 9, and the 3rd valve 8 is for controlling the switch of counterbalance valve 7.After opening the first valve 3, from gas cylinder 1 gas out after air relief valve 2 regulates pressure to inflation in plenum chamber 9, by plenum chamber 9 as accommodation district, centre, it is possible to make to be filled with the state of the gas held stationary of particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18.
Plenum chamber 9 is provided with the first Pressure gauge 10, for monitoring the gas pressure in plenum chamber 9, the side of plenum chamber 9 is connected to particulate coal adsorption chamber 14 by the second pipeline 11, opposite side is connected to lumped coal adsorption chamber 18 by the 3rd pipeline 15, second pipeline 11 is provided with the second Pressure gauge 12 and the 4th valve 13, second Pressure gauge 12 is for monitoring the gas pressure in particulate coal adsorption chamber 14, and the 4th valve 13 is for controlling being switched on or off of the second pipeline 11.3rd pipeline 15 is provided with the 3rd Pressure gauge 16 and the 5th valve 17, and the 3rd Pressure gauge 16 is for monitoring the gas pressure in lumped coal adsorption chamber 18, and the 5th valve 17 is for controlling being switched on or off of the 3rd pipeline 15.Data collecting instrument 20 is connected to the first Pressure gauge the 10, second Pressure gauge the 12, the 3rd Pressure gauge 16 and lumped coal adsorption chamber 18, is used for gathering data, and transfers data to computer 22.
Preferably, first valve the 3, second valve the 6, the 3rd valve the 8, the 4th valve 13 and the 5th valve 17 are pneumatic needle valve, counterbalance valve 7 is pneumatic back valve, can realize becoming gradient blood pressure lowering, the switch of pneumatic needle valve and air relief valve 2, pneumatic back valve and vacuum pump 5 is integrated in valve positioner 23, valve positioner 23 is connected with computer 22, can control these valves by computer program or switch opens or closes, it is achieved full-automatic, the Programmed control of process of the test.
Plenum chamber 9, particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18 are positioned in water bath 24, water bath 24 is connected to data collecting instrument 20, temperature in controlled controlling the water circulation bath cabinet 24, thus providing temperature environment for plenum chamber 9, particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18, general, it is 10 DEG C～80 DEG C that water bath 24 controls temperature range, and temperature can be automatically adjusted after setting.
The coal dust of diameter 0.17～0.25mm it is placed with in particulate coal adsorption chamber 14, the square block coal sample that the length of side is 20mm it is placed with in lumped coal adsorption chamber 18, block coal sample 18 is pasted with foil gauge 19, the T-shaped stickup of foil gauge 19, foil gauge 19 is connected to data collecting instrument 20 by wire 21, thus the deflection of samples of coal pulled.
Such as Fig. 1 and Fig. 2, the structure of particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18 is essentially identical, particulate coal adsorption chamber 14 is or/and lumped coal adsorption chamber 18 includes cylinder body 25, cylinder body 25 be arranged over cylinder cap 26, it is provided with dome 27 between cylinder cap 26 and cylinder body 25 end face, dome 27 is provided with aviation plug 28, draw for the wire 21 connected on foil gauge 19, cylinder cap 26 is bolted in the top of cylinder body 25, thus dome 27 and cylinder body 25 are locked, it is provided with sealing ring 29 between top and the dome 27 of cylinder body 25, makes to seal between the two, it is prevented that gas leakage.In the rectified filter screen 30 that is arranged over of coal sample in cylinder body 25, rectified filter screen 30 is between air inlet 31 and coal sample, it is prevented that air turbulence, it is to avoid gas blows afloat particulate coal.
The present invention multi-functional coal body adsorption/desorption Gas explosion burns determination test device is inflated in plenum chamber 9 by gas cylinder 1, again through plenum chamber 9 to particulate coal adsorption chamber 14 or/and inflate in lumped coal adsorption chamber 18, the adsorption/desorption amount of graininess coal sample 33 and block coal sample 32 under same gas pressure, temperature conditions and the deflection of block coal sample 32 can be measured, measure both absorption constants, the multi-functional use of same assay device, test equipment simple in construction, saves cost.
Above-mentioned multi-functional coal body adsorption/desorption Gas explosion burns determination test device is adopted to carry out graininess coal sample and the absorption constant a of block coal sample adsorbance determination test, block coal sample adsorbance and the relation of deflection, coal sample, the determination test of b value, lumped coal become the determination test of coal deformation amount during gradient depressurization desorption, and its test method generally comprises:
Step one: make coal sample, preparation graininess coal sample 33 or/and block coal sample 32, is respectively placed in particulate coal adsorption chamber 14 or/and in lumped coal adsorption chamber 18.
Step 2: open gas cylinder 1, in computer 22, input the quality of coal sample, true density, apparent density, moisture content, program parameter is set, make described computer automatic execution test procedure, thus measuring desired parameters, and collect data by data collecting instrument 20 and computer 22 and analyze.
The test method specifically carrying out parameters mensuration is:
1. the determination step of the coal sample that the specific surface area of equal in quality is different adsorbance under the same conditions
Square coal sample for the coal dust of the particle diameter 0.17～0.25mm of equal in quality Yu length of side 20mm.First raw coal is crushed, diameter 0.17～0.25mm coal dust is screened out with sub-sieve, the cube becoming the length of side to be 20mm raw coal cutting machine or cylinder coal sample, with drying baker by standby in drying in oven for the sample produced, then weigh the quality of cube or cylinder coal sample and weigh the coal dust identical in quality with cube or cylinder coal sample, graininess coal sample 33 is respectively put in particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18 with bulk coal sample 32.
Open gas cylinder 1 valve, then start computer 22 and control program, the input quality of coal sample, true density, apparent density, moisture content, arrange program parameter, makes computer program perform following steps (original state valve, air relief valve 2, counterbalance valve 7 are closed mode):
A () opens the second valve the 6, the 4th valve 13 and the 5th valve 17, start vacuum pump 5 degassed, after degassed certain time, closes the second valve the 6, the 4th valve 13 and the 5th valve 17, closes vacuum pump 5；
B () opens the first valve 3, regulate air relief valve 2, inflate in plenum chamber 9, making pressure in plenum chamber 9 is P1, close the first valve 3 and air relief valve 2, open the 4th valve 13 and the 5th valve 17, inflate in particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18, when to make the blowing pressure be P2, close the 4th valve 13 and the 5th valve 17；
C () graininess coal sample 33 and block coal sample 32, respectively at particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18 internal adsorption, are adsorbed 12 hours, after namely absorption reaches balance, are recorded the numerical value of the second Pressure gauge 12 and the 3rd Pressure gauge 16；
D () computer 22, according to the change of gas pressure in particulate coal adsorption chamber 14 and lumped coal adsorption chamber 18, calculates coal sample adsorption gas amount.By repeating (a) (b) (c) process of the test, change adsorptive pressure and temperature carries out the determination test of particulate coal and lumped coal adsorbance at different pressures and temperature, probe into the coal sample gas adsorption magnitude relation of different specific surface area, by probing into the relation of different-grain diameter coal adsorbance, and then the adsorbance of prediction lumped coal, it is possible to the gas bearing capacity of whole coal body is more predicted accurately.
2. the determination step of the block adsorbance of coal sample 32, deflection and relation thereof
For the square coal sample becoming 20mm.Coal sample preparation method is identical with above-mentioned test, first the square coal sample becoming the length of side to be 20mm raw coal cutting machine, with drying baker, sample drying is standby, then the quality of using square shaped coal is weighed, last stickup foil gauge 19 in block coal sample 32, coal sample is put into lumped coal adsorption chamber 18, then wire 21 is connected to data collecting instrument 20.
Open gas cylinder 1 valve, then computer-controlled program is started, the input quality of coal sample, true density, apparent density, moisture content, arrange program parameter, makes computer program perform following steps (original state valve, air relief valve, counterbalance valve are closed mode):
A () opens the second valve 6 and the 5th valve 17, start vacuum pump 5 degassed, after degassed certain time, closes the second valve 6 and the 5th valve 17, closes vacuum pump 5；
B () opens the first valve 3, regulate air relief valve 2, inflates in plenum chamber 9, making pressure in plenum chamber 9 is P1, closes the first valve 3 and air relief valve 2, opens the 5th valve 17, inflate in lumped coal adsorption chamber 18, when to make the blowing pressure be P2, close the 5th valve 17；
C () block coal sample 32, at lumped coal adsorption chamber 18 internal adsorption, is adsorbed 12 hours, after namely absorption reaches balance, and the numerical value of record the 3rd Pressure gauge 16；
D () computer 22 is according to the change of gas pressure in block coal sample 32 adsorption chamber, calculate the content of coal sample adsorption gas, data collecting instrument 20 measures the deflection of block coal sample 32 simultaneously, by repeating (a) (b) (c) process of the test, change adsorptive pressure and temperature carries out the determination test of lumped coal 32 adsorbance and deflection at different pressures and temperature, obtain the relation of lumped coal 32 adsorbance and deflection.
Further, block coal sample 32 is after adsorption equilibrium, open counterbalance valve 7, it is gradually lowered the pressure of counterbalance valve 7, record pressure is reduced to P3, P4 ... the deflection of block coal sample 32 corresponding during desorbing balance under each pressure, record block coal sample 32 and become the deflection of gradient desorption coal body, for probing into the method that adsorption/desorption process coal deformation characteristic provides scientific and reasonable.Above-mentioned assay device is by testing the relation between coal adsorption/desorption gas amount and coal deformation amount, it was predicted that because Gas causes coal deformation amount in seam mining process, provides reliable foundation for prevention coal and gas prominent.
3. the absorption constant determination step of coal body
First raw coal is crushed, screen out diameter 0.17～0.25mm coal dust with sub-sieve, standby by drying baker drying in oven, weigh the coal dust that quality is 25g, graininess coal sample 33 is put into particulate coal adsorption chamber 14.
Open gas cylinder 1, then start computer-controlled program.The input quality of coal sample, true density, apparent density, moisture content, arrange program parameter, makes computer program perform following steps (original state valve is closed mode):
A () sets bath temperature as 60 DEG C, open the second valve 6 and the 4th valve 13, starts vacuum pump 5 degassed, after degassed 5 hours, closes the second valve 6 and the 4th valve 13, closes vacuum pump 5；
B () sets bath temperature as 30 DEG C, open the first valve 3, regulates air relief valve 2, making the pressure in plenum chamber 9 is P1, close the first valve 3 and air relief valve 2, open the 4th valve 13 and inflate in particulate coal adsorption chamber 14, when inflating as P2, close the 4th valve 13；
C () particulate coal adsorption chamber 14 adsorbs 12 hours after, absorption reaches balance, records the numerical value of the second Pressure gauge 12；
D () process of the test water bath remains 30 DEG C, then pass through increase adsorptive pressure, by repeating (b), (c) test procedure, measure the adsorbance of granular coal sample 33 under N (N >=7) individual different pressures, computer 22 draws adsorption isothermal curve according to measuring point, calculates absorption constant a, b value, the mensuration of absorption constant can Forecast Coal Seam Gas Content, and pressure-dependent adsorption-desorption rule.
Same, the absorption constant of block coal sample 32 measures identical with graininess coal sample 33 absorption constant assay method, no longer repeats one by one, by testing different-grain diameter coal gas-absorbent constant, it is possible to estimate coal seam gas-bearing capacity more accurately.
Adopt above-mentioned assay device and method can realize the mensuration of multifunctional coal adsorption-desorption Gas explosion burns, same assay device is used for multiple test, and the contrast of different-grain diameter coal body adsorbance under the same terms can be carried out according to this device, probe into the relation between Paniculate coal and lumped coal adsorption gas amount, relative analysis goes out the difference of Paniculate coal and lumped coal and contacts, the relation between the adsorbance and coal deformation produced coal can be analyzed simultaneously, in this process that coal gas is gushed out, the prediction of coal deformation amount has important reference value, rational foundation is provided for coal and gas prominent.
Above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, skilled artisan would appreciate that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of the technical program, it all should be encompassed in scope of the presently claimed invention.
Claims (10)
- null1. a multifunctional coal adsorption/desorption Gas explosion burns determination test device，It is characterized in that，Including: gas cylinder、Plenum chamber、Particulate coal adsorption chamber、Lumped coal adsorption chamber、Data collecting instrument and computer，Described plenum chamber is connected to described gas cylinder by the first pipeline、Vacuum pump and counterbalance valve，Described first pipeline between described gas cylinder and described plenum chamber is provided with air relief valve and the first valve，The second valve it is provided with between described vacuum pump and described plenum chamber，The 3rd valve it is provided with between described counterbalance valve and described plenum chamber，Described plenum chamber is provided with the first Pressure gauge，The side of described plenum chamber is connected to described particulate coal adsorption chamber by the second pipeline，Opposite side is connected to described lumped coal adsorption chamber by the 3rd pipeline，Described second pipeline is provided with the second Pressure gauge and the 4th valve，Described 3rd pipeline is provided with the 3rd Pressure gauge and the 5th valve，Described data collecting instrument is connected to the first Pressure gauge、Second Pressure gauge、3rd Pressure gauge and described lumped coal adsorption chamber，For gathering data，And transfer data to described computer.
- 2. multifunctional coal adsorption/desorption Gas explosion burns determination test device according to claim 1, it is characterized in that: described plenum chamber, described particulate coal adsorption chamber and described lumped coal adsorption chamber are positioned in water bath, and described water bath is connected to described data collecting instrument.
- 3. multifunctional coal adsorption/desorption Gas explosion burns determination test device according to claim 1, it is characterized in that: described first valve, described second valve, described 3rd valve, described 4th valve and described 5th valve are pneumatic needle valve, the switch of described pneumatic needle valve and described air relief valve, described counterbalance valve and described vacuum pump is integrated in valve positioner, and described valve positioner is connected with described computer.
- 4. multifunctional coal adsorption/desorption Gas explosion burns determination test device according to claim 1, it is characterized in that: in described lumped coal adsorption chamber, be placed with block coal sample, being pasted with foil gauge in described block coal sample, described foil gauge is connected to described data collecting instrument.
- 5. multifunctional coal adsorption/desorption Gas explosion burns determination test device according to claim 1, it is characterized in that: described particulate coal adsorption chamber is or/and described lumped coal adsorption chamber includes cylinder body, described cylinder body be arranged over cylinder cap, it is provided with dome between described cylinder cap and described cylinder deck, being provided with aviation plug on described dome, described dome and described cylinder body are spirally connected locking by described cylinder cap.
- 6. multifunctional coal adsorption/desorption Gas explosion burns determination test device according to claim 5, it is characterized in that: between top and the described dome of described cylinder body, be provided with sealing ring, be provided with rectified filter screen in described cylinder body for coal sample and air inlet being separated.
- 7. the method for the multifunctional coal adsorption/desorption Gas explosion burns determination test device that a kind adopts described in claim 1, it is characterised in that including:Step one: make coal sample, preparation graininess coal sample or/and block coal sample, is respectively placed in described particulate coal adsorption chamber or/and in described lumped coal adsorption chamber；Step 2: open described gas cylinder, inputs the quality of coal sample, true density, apparent density, moisture content in described computer, arranges program parameter, makes described computer perform following steps:A () opens described second valve and described 4th valve or/and described 5th valve, start described vacuum pump degassed, after degassed certain time, closes described second valve and described 4th valve or/and described 5th valve, closes described vacuum pump；B () opens described first valve, regulate described air relief valve, inflate in described plenum chamber, making described inflation room pressure is P1, close described first valve and described air relief valve, open described 4th valve or/and described 5th valve, to described particulate coal adsorption chamber or/and inflate in described lumped coal adsorption chamber, when to make the blowing pressure be P2, close described 4th valve or/and described 5th valve；(c) described graininess coal sample or/and described block coal sample respectively at described particulate coal adsorption chamber or/and described lumped coal adsorption chamber internal adsorption, absorption records described second Pressure gauge and described 3rd manometric numerical value after reaching balance；D () described computer or/and the change of gas pressure in described lumped coal adsorption chamber, calculates coal sample adsorbance, coal sample absorption constant according to described particulate coal adsorption chamber.
- 8. method according to claim 7, it is characterized in that: vertical in described block coal sample be pasted with foil gauge, described foil gauge is connected to described data collecting instrument, when measuring described block coal sample adsorbance, described data collecting instrument records the deflection of described coal sample, and undertaken organizing test by changing adsorptive pressure and temperature, record the relation of block coal sample adsorbance and deflection. more.
- 9. method according to claim 8, it is characterized in that: when measuring described block coal sample deflection, after step 2 (c), open described counterbalance valve, it is gradually lowered the pressure of described counterbalance valve, record pressure is reduced to P3, P4 ... the deflection of block coal sample corresponding during desorbing balance under each pressure, records block coal sample and becomes the deflection of gradient desorption coal body.
- 10. method according to claim 7, it is characterized in that: when described 4th valve or described 5th valve are opened simultaneously, described plenum chamber is inflated in described particulate coal adsorption chamber and described lumped coal adsorption chamber simultaneously, and described assay device measures the different coal sample of the specific surface area of equal in quality adsorbance under the same conditions；Described 4th valve closing, when described 5th valve is opened, described plenum chamber is individually inflated in described lumped coal adsorption chamber, measures the described block adsorbance of coal sample, deflection and relation thereof；Described 4th valve is opened, and during described five valve closing, described plenum chamber is individually inflated in described particulate coal adsorption chamber, measures adsorbance and the absorption constant of described graininess coal sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610112973.3A CN105758763A (en) | 2016-02-29 | 2016-02-29 | Multifunctional coal adsorption/desorption gas parameter determination testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610112973.3A CN105758763A (en) | 2016-02-29 | 2016-02-29 | Multifunctional coal adsorption/desorption gas parameter determination testing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105758763A true CN105758763A (en) | 2016-07-13 |
Family
ID=56330518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610112973.3A Pending CN105758763A (en) | 2016-02-29 | 2016-02-29 | Multifunctional coal adsorption/desorption gas parameter determination testing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105758763A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353159A (en) * | 2016-09-08 | 2017-01-25 | 华北科技学院 | Apparatus and method for manufacturing coal sample by hybrid hot-pressing |
| CN106644821A (en) * | 2016-12-31 | 2017-05-10 | 山东大学 | Testing apparatus and method for accurately measuring initial gas expansion energy |
| CN106645627A (en) * | 2016-09-21 | 2017-05-10 | 中国矿业大学(北京) | Strain measurement method for water-absorption free expansion of coal rocks |
| CN107367441A (en) * | 2017-08-04 | 2017-11-21 | 太原理工大学 | A kind of device and method of high resolution correlation measure gas adsorption equilibration time |
| CN107442189A (en) * | 2017-08-28 | 2017-12-08 | 包头钢铁（集团）有限责任公司 | A kind of perishable coal detection sample storage combined unit |
| CN107478541A (en) * | 2017-07-28 | 2017-12-15 | 太原理工大学 | A kind of analogue experiment installation and method of high pressure water injection coal gas Coupled Disturbances |
| CN107478559A (en) * | 2017-07-26 | 2017-12-15 | 太原理工大学 | A kind of device and method simulated gas and migrated in different-grain diameter size coal sample |
| CN108760802A (en) * | 2018-05-21 | 2018-11-06 | 辽宁工程技术大学 | Temperature Evolution token test device and method during coal petrography adsorption-desorption gas |
| CN109540734A (en) * | 2019-01-09 | 2019-03-29 | 重庆工业职业技术学院 | Coal seam with gas High Pressure Absorption/the test device for desorption and method of controllable moisture |
| CN110487703A (en) * | 2019-10-01 | 2019-11-22 | 太原理工大学 | Hypotonic coal-bed gas slips coefficient accurate measurement method |
| CN111077039A (en) * | 2020-01-14 | 2020-04-28 | 太原理工大学 | Device and method for measuring physical oxygen uptake, chemical oxygen uptake and true density of coal |
| CN113092307A (en) * | 2021-04-08 | 2021-07-09 | 华北科技学院(中国煤矿安全技术培训中心) | CO (carbon monoxide)2Experimental device and method for measuring adsorption quantity |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009287A1 (en) * | 2009-07-20 | 2011-01-27 | 中国矿业大学(北京) | System and method for testing gas migration process in coal and rock mass |
| CN102830213A (en) * | 2012-08-10 | 2012-12-19 | 河南理工大学 | Adsorption-desorption-seepage experiment system for loaded coal containing gas under condition of varying temperatures |
| CN103018132A (en) * | 2012-12-21 | 2013-04-03 | 中煤科工集团重庆研究院 | Dynamic deformation characteristic testing method in coal absorption and desorption process |
| CN103033442A (en) * | 2012-12-20 | 2013-04-10 | 河南理工大学 | Gas adsorption and desorption test apparatus |
| CN104062204A (en) * | 2014-07-11 | 2014-09-24 | 中国石油大学(华东) | High-temperature and high-pressure adsorption and desorption device and use method thereof |
| CN203949905U (en) * | 2014-07-04 | 2014-11-19 | 西安科技大学 | The gas adsorption of coal and pyrophorisity temperature programme integrated experimental device |
| CN204286977U (en) * | 2014-11-28 | 2015-04-22 | 焦作市美格安矿业科技有限公司 | Laboratory simulation measures the device of coal-bed gas pressure |
-
2016
- 2016-02-29 CN CN201610112973.3A patent/CN105758763A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009287A1 (en) * | 2009-07-20 | 2011-01-27 | 中国矿业大学(北京) | System and method for testing gas migration process in coal and rock mass |
| CN102830213A (en) * | 2012-08-10 | 2012-12-19 | 河南理工大学 | Adsorption-desorption-seepage experiment system for loaded coal containing gas under condition of varying temperatures |
| CN103033442A (en) * | 2012-12-20 | 2013-04-10 | 河南理工大学 | Gas adsorption and desorption test apparatus |
| CN103018132A (en) * | 2012-12-21 | 2013-04-03 | 中煤科工集团重庆研究院 | Dynamic deformation characteristic testing method in coal absorption and desorption process |
| CN203949905U (en) * | 2014-07-04 | 2014-11-19 | 西安科技大学 | The gas adsorption of coal and pyrophorisity temperature programme integrated experimental device |
| CN104062204A (en) * | 2014-07-11 | 2014-09-24 | 中国石油大学(华东) | High-temperature and high-pressure adsorption and desorption device and use method thereof |
| CN204286977U (en) * | 2014-11-28 | 2015-04-22 | 焦作市美格安矿业科技有限公司 | Laboratory simulation measures the device of coal-bed gas pressure |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353159A (en) * | 2016-09-08 | 2017-01-25 | 华北科技学院 | Apparatus and method for manufacturing coal sample by hybrid hot-pressing |
| CN106645627A (en) * | 2016-09-21 | 2017-05-10 | 中国矿业大学(北京) | Strain measurement method for water-absorption free expansion of coal rocks |
| CN106644821B (en) * | 2016-12-31 | 2019-12-06 | 山东大学 | Test instrument and method for accurately measuring initial gas expansion energy |
| CN106644821A (en) * | 2016-12-31 | 2017-05-10 | 山东大学 | Testing apparatus and method for accurately measuring initial gas expansion energy |
| CN107478559A (en) * | 2017-07-26 | 2017-12-15 | 太原理工大学 | A kind of device and method simulated gas and migrated in different-grain diameter size coal sample |
| CN107478559B (en) * | 2017-07-26 | 2020-11-24 | 太原理工大学 | Device and method for simulating migration of gas in coal samples with different particle sizes |
| CN107478541A (en) * | 2017-07-28 | 2017-12-15 | 太原理工大学 | A kind of analogue experiment installation and method of high pressure water injection coal gas Coupled Disturbances |
| CN107367441A (en) * | 2017-08-04 | 2017-11-21 | 太原理工大学 | A kind of device and method of high resolution correlation measure gas adsorption equilibration time |
| CN107367441B (en) * | 2017-08-04 | 2020-08-28 | 太原理工大学 | Device and method for high-precision contrast measurement of gas adsorption equilibrium time |
| CN107442189A (en) * | 2017-08-28 | 2017-12-08 | 包头钢铁（集团）有限责任公司 | A kind of perishable coal detection sample storage combined unit |
| CN107442189B (en) * | 2017-08-28 | 2023-03-21 | 包头钢铁（集团）有限责任公司 | Easy rotten coal detects sample storage integrated unit |
| CN108760802A (en) * | 2018-05-21 | 2018-11-06 | 辽宁工程技术大学 | Temperature Evolution token test device and method during coal petrography adsorption-desorption gas |
| CN109540734A (en) * | 2019-01-09 | 2019-03-29 | 重庆工业职业技术学院 | Coal seam with gas High Pressure Absorption/the test device for desorption and method of controllable moisture |
| CN109540734B (en) * | 2019-01-09 | 2023-11-24 | 重庆工业职业技术学院 | Gas-containing coal high-pressure adsorption/desorption test device and method capable of controlling moisture |
| CN110487703A (en) * | 2019-10-01 | 2019-11-22 | 太原理工大学 | Hypotonic coal-bed gas slips coefficient accurate measurement method |
| CN110487703B (en) * | 2019-10-01 | 2021-12-31 | 太原理工大学 | Method for accurately measuring gas slip coefficient of low-permeability coal seam |
| CN111077039A (en) * | 2020-01-14 | 2020-04-28 | 太原理工大学 | Device and method for measuring physical oxygen uptake, chemical oxygen uptake and true density of coal |
| CN111077039B (en) * | 2020-01-14 | 2021-02-09 | 太原理工大学 | Device and method for measuring physical oxygen uptake, chemical oxygen uptake and true density of coal |
| CN113092307A (en) * | 2021-04-08 | 2021-07-09 | 华北科技学院(中国煤矿安全技术培训中心) | CO (carbon monoxide)2Experimental device and method for measuring adsorption quantity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105758763A (en) | Multifunctional coal adsorption/desorption gas parameter determination testing device and method | |
| CN205593876U (en) | Coal column gas adsorbs many parameter testing of desorption system | |
| CN204649538U (en) | Rock three axle acoustic emission experiment device under a kind of confined pressure, hole press strip part | |
| CN104596909B (en) | Multidimensional adds the close coupling of unloading multiphase porous media to damage Seepage Experiment method | |
| CN103868799B (en) | Rock mechanical characteristic analyzer for non-conventional oil-gas reservoir stratum | |
| CN105784489A (en) | Test device and method for coal body deformation under action of true triaxial stress, seepage, adsorption and desorption | |
| CN112504847B (en) | Rock dynamic and static true/normal triaxial shear rheological THMC multi-field coupling test device | |
| CN201819853U (en) | Novel osmotic suction controlled comprehensive tester for unsaturated soil | |
| CN106442736B (en) | Testing device, testing system and testing method for uniaxial compression measurement of impact tendency index and acoustic characteristic of gas-containing coal | |
| CN112525707B (en) | Rock dynamic and static true/normal triaxial shear rheological THMC multi-field coupling test method | |
| CN105571979B (en) | Stand under load tectonic soft coal gas adsorption desorption experiment system and method | |
| CN104502453B (en) | Longitudinal wave test device of gas-containing coal rock test sample | |
| CN105717026B (en) | A kind of adjustable coal petrography seepage flow experiment system of outlet pressure and method | |
| CN109599021B (en) | A kind of geologic reservoir radial flow simulator | |
| CN209148501U (en) | Rock Biot coefficient experimental provision is tested under a kind of confining pressure-temperature action | |
| CN205449758U (en) | Outlet pressure adjustable coal petrography seepage flow experimental system | |
| CN105203427A (en) | Gas-instant-desorption testing device and method | |
| CN107748082A (en) | The malleation that drills sampling coal sample gas leakage analogue means and test device and method | |
| CN109187926A (en) | Three axis seepage flow test device of fractured coal and rock and desorption-diffusion-seepage tests system | |
| CN102944660B (en) | A kind of big scale coal gas adsorption-desorption simulation experiment system | |
| CN106092820A (en) | A kind of mud shale gas absorption tolerance bearing calibration based on density and device | |
| CN108663498B (en) | High-temperature depressurization and fracturing shale gas field desorption experimental device and method | |
| CN109709017A (en) | A kind of rock fracture high pressure gas adsorption tester device and its test method | |
| CN117538217A (en) | Device and method for analyzing permeation and migration characteristics of helium-rich natural gas in rock | |
| CN105115824B (en) | A kind of rock confining pressure adds unloading test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |
|
| RJ01 | Rejection of invention patent application after publication |