CN113219002A - Experimental device for research on resistivity of gas-containing coal body and using method - Google Patents
Experimental device for research on resistivity of gas-containing coal body and using method Download PDFInfo
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- CN113219002A CN113219002A CN202110633864.7A CN202110633864A CN113219002A CN 113219002 A CN113219002 A CN 113219002A CN 202110633864 A CN202110633864 A CN 202110633864A CN 113219002 A CN113219002 A CN 113219002A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
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Abstract
The invention discloses an experimental device for researching the resistivity of a gas-containing coal body and a using method thereof, the experimental device comprises a gas guide tube and a resistance instrument, wherein one side of the resistance instrument is provided with a first constant-temperature water bath box, the other side of the resistance instrument is provided with a second constant-temperature water bath box, a gas tank is placed in the first constant-temperature water bath box, an adsorption potter is placed in the second constant-temperature water bath box, a coal sample is placed in the adsorption potter, an insulating cover is arranged on the top of the adsorption potter in a dismounting mode, one end of the gas guide tube is connected with a gas tank, the other end of the gas guide tube is connected with the adsorption potter, and the experimental device further comprises a stabilizing mechanism; the invention has the beneficial effects that: the adsorption potteries are placed stably through the designed stabilizing mechanism, so that the placing stability of the adsorption potteries is improved; the designed support mechanism is beneficial to further supporting the air duct, and the problem of insufficient support of the traditional air duct is solved; through the designed stable assembly, the resistance meter is inclined, and the convenience for a user to operate the resistance meter is improved.
Description
Technical Field
The invention belongs to the technical field of coal body resistivity, and particularly relates to an experimental device for researching gas-containing coal body resistivity and a using method of the experimental device for researching gas-containing coal body resistivity.
Background
The geophysical exploration provides technical support for mine production address transparentization, can guide accurate coal mining and effectively avoids geological disasters. Among them, the electrical prospecting focuses on the formation electrical physical field characteristics represented by resistivity, and reflects the properties of the medium, thereby determining whether there is a geological anomalous body. In the coal mining process, gas disasters are important factors influencing safety production, and accurate determination of the gas content of the coal bed has important significance for coal mine safety production.
According to the principle of resistivity test, the influence of adsorption/desorption gas on the resistivity of a coal body can be researched by respectively measuring the change rule of the resistivity of the coal sample under the conditions of continuous adsorption/desorption and equal-volume adsorption/desorption by using a high-precision resistance test experimental device; the method has very important guiding function for testing the gas content and detecting the abnormal gas area.
The existing experimental device for researching the resistivity of the gas-containing coal body has the following defects when in use:
1. when the adsorption potteries are arranged in the constant-temperature water bath box, the stability of the placement of the adsorption potteries is increased;
2. when the air duct is connected, the air duct is further supported.
Disclosure of Invention
The invention aims to provide an experimental device for researching the resistivity of a coal body containing gas and a using method thereof, aiming at solving the defects that when an adsorption crock proposed in the background technology is placed in a constant-temperature water bath box, the placement stability of the adsorption crock is improved; when the air duct is connected, the air duct is not sufficiently supported.
In order to achieve the purpose, the invention provides the following technical scheme: an experimental device for researching electrical resistivity of coal containing gas comprises a gas-guide tube and a resistance instrument, wherein one side of the resistance instrument is provided with a first constant-temperature water bath box, the other side of the resistance instrument is provided with a second constant-temperature water bath box, a gas tank is placed in the first constant-temperature water bath box, an adsorption potter is placed in the second constant-temperature water bath box, a coal sample is placed in the adsorption potter, an insulating cover is arranged at the top of the adsorption potter in a dismounting mode, one end of the gas-guide tube is connected with the gas tank, the other end of the gas-guide tube is connected with the adsorption potter, the experimental device further comprises a stabilizing mechanism, the stabilizing mechanism comprises a limiting seat, a groove, a through hole, a movable block, a spring and a supporting block, the limiting seat is fixed at the inner bottom of the second constant-temperature water bath box, the top of the limiting seat is provided with the through hole for inserting the adsorption potter, symmetrically distributed, The other end of the spring extends out of the groove and is connected with a supporting block which is propped against the adsorption potteries, one end of the spring is connected with the end face of the embedded end of the movable block, and the other end of the spring is connected with the groove bottom of the groove.
As a preferable technical scheme of the invention, the movable block is of a cuboid structure, and a gap is reserved between the spring and the inner side surface of the groove.
As a preferable technical scheme, the gas tank is provided with a first pressure gauge, and the limiting seat is provided with a water permeable hole.
As a preferred technical scheme of the invention, the air duct is provided with a valve, and the air duct is also provided with a second pressure gauge; the gas guide pipe support is characterized by further comprising a supporting mechanism, the supporting mechanism comprises a supporting block and a supporting rod, the supporting block is fixed to the top of the supporting rod, and the gas guide pipe is erected on the supporting block.
As a preferred technical solution of the present invention, the resistance meter is provided with an electrical connection line, and the adsorption canister is provided with a lead inside, and the lead is connected with the electrical connection line.
As a preferable technical scheme of the invention, a movable frame is movably arranged on the side surface of the resistance meter, and a stabilizing component is arranged on the movable frame and the resistance meter.
As a preferable technical scheme, the stabilizing assembly comprises a movable column and a socket, the movable frame is movably provided with the movable column, and the bottom of the resistance meter is provided with the socket into which the movable column is inserted.
The invention also discloses a use method of the experimental device for researching the resistivity of the gas-containing coal body, which comprises the following steps:
the method comprises the following steps: drying the coal sample in a drying box, and measuring the resistance values of the dried coal sample under different constant temperature conditions;
step two: putting the dried and cooled coal sample into an adsorption canister, and covering an insulating cover;
step three: taking the adsorption potteries, inserting the adsorption potteries into the through holes of the limiting seat, applying pressure to the pressing block when the adsorption potteries are inserted, transmitting the pressing block to the movable block and compressing the spring, resetting the compressed spring, driving the movable block by the reset spring, driving the pressing block by the movable block to clamp the adsorption potteries, and enabling the adsorption potteries to be stably placed;
step four: the gas guide pipe is respectively connected with the gas tank and the adsorption pot, and the gas guide pipe frame is arranged on the supporting block at the top of the supporting rod;
step five: the electric connecting wire on the resistance meter is connected with the lead in the adsorption potteries, and the test is carried out by vacuumizing.
Compared with the prior art, the invention has the beneficial effects that:
(1) the adsorption potteries are placed stably through the designed stabilizing mechanism, so that the placing stability of the adsorption potteries is improved;
(2) the designed support mechanism is beneficial to further supporting the air duct, and the problem of insufficient support of the traditional air duct is solved;
(3) through the designed stable assembly, the resistance meter is inclined, and the convenience for a user to operate the resistance meter is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the support bar and support block of the present invention;
FIG. 3 is an enlarged view of the area B of FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of area E of FIG. 1 according to the present invention;
in the figure: 1. a first constant temperature water bath; 2. a gas tank; 3. a first pressure gauge; 4. an air duct; 5. a support block; 6. a valve; 7. an electrical connection wire; 8. a second pressure gauge; 9. an insulating cover; 10. coal sample; 11. a second constant temperature water bath; 12. an adsorption jar; 13. a limiting seat; 14. a movable post; 15. a movable frame; 16. a resistance meter; 17. a support bar; 18. a socket; 19. a groove; 20. perforating; 21. a movable block; 22. a spring; 23. and (6) butting against blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: an experimental device for researching the resistivity of a coal body containing gas comprises an air duct 4 and a resistance instrument 16, wherein one side of the resistance instrument 16 is provided with a first constant temperature water bath box 1, the other side is provided with a second constant temperature water bath box 11, a gas tank 2 is arranged inside the first constant temperature water bath box 1, an adsorption potter 12 is arranged inside the second constant temperature water bath box 11, a coal sample 10 is arranged inside the adsorption potter 12, an insulating cover 9 is arranged on the top of the adsorption potter 12 in a dismounting mode, one end of the air duct 4 is connected with the gas tank 2, the other end of the air duct 4 is connected with the adsorption potter 12, the experimental device also comprises a stabilizing mechanism, the stabilizing mechanism comprises a limiting seat 13, a groove 19, a through hole 20, a movable block 21, a spring 22 and a supporting block 23, the limiting seat 13 is fixed at the inner bottom of the second constant temperature water bath box 11, the top of the limiting seat 13 is provided with a through hole 20 for inserting the adsorption potter 12, the limiting seat 13 is provided with symmetrically distributed grooves 19, one end of the movable block 21 is embedded into the groove 19, the other end extends out of the groove 19 and is connected with a supporting block 23 which is abutted against the adsorption potteries 12, one end of the spring 22 is connected with the end face of the embedded end of the movable block 21, the other end is connected with the groove bottom of the groove 19, the adsorption potteries 12 are taken, the adsorption potteries 12 are inserted along the through hole 20 of the limiting seat 13, when the adsorption potteries 12 are inserted, the supporting block 23 is pressed, the pressing force is transmitted to the movable block 21 and compresses the spring 22, the compressed spring 22 is reset, the reset spring 22 drives the movable block 21 and the movable block 21 drives the supporting block 23 to clamp the adsorption potteries 12, so that the adsorption potteries 12 are placed stably, and the placement stability of the adsorption potteries 12 is improved.
In this embodiment, preferably, the movable block 21 is a rectangular parallelepiped structure, and a gap is left between the spring 22 and the inner side surface of the groove 19, which helps to reduce the resistance of the spring 22 to stretch.
In this embodiment, preferably, the gas canister 2 is provided with a first pressure gauge 3, the limiting seat 13 is provided with a water permeable hole, and the adsorption canister 12 is heated through the water permeable hole during water bath.
In this embodiment, preferably, the air duct 4 is provided with a valve 6, and the air duct 4 is further provided with a second pressure gauge 8; still include supporting mechanism, supporting mechanism includes supporting shoe 5 and bracing piece 17, and the top of bracing piece 17 is fixed with supporting shoe 5, and air duct 4 erects on supporting shoe 5, helps further playing the support to air duct 4, has solved the problem that air duct 4 in the tradition supported not enough.
In this embodiment, preferably, an electrical connection wire 7 is disposed on the resistance meter 16, and a lead is disposed in the adsorption canister 12 and connected to the electrical connection wire 7.
In this embodiment, it is preferable, resistance appearance 16's side surface activity is provided with adjustable shelf 15, be provided with firm subassembly on adjustable shelf 15 and the resistance appearance 16, firm subassembly includes activity post 14 and socket 18, the activity is provided with activity post 14 on the adjustable shelf 15, supply activity post 14 male socket 18 to be seted up in resistance appearance 16's bottom, during the use, resistance appearance 16 one end is supported on the mesa, adjustable shelf 15 and resistance appearance 16 are the tilt state, activity post 14 on the adjustable shelf 15 rotates and inserts in the socket 18, make resistance appearance 16 slope, it is more convenient to operate resistance appearance 16.
A use method of an experimental device for researching resistivity of a gas-containing coal body comprises the following steps:
the method comprises the following steps: placing the coal sample 10 in a drying box for drying, and measuring the resistance value of the dried coal sample 10 under different constant temperature conditions;
step two: putting the dried and cooled coal sample 10 into an adsorption canister 12, and covering with an insulating cover 9;
step three: taking the adsorption potteries 12, inserting the adsorption potteries 12 into the through holes 20 of the limiting seats 13, applying pressure to the resisting blocks 23 when the adsorption potteries 12 are inserted, transmitting the pressed resisting blocks 23 to the movable blocks 21 and compressing the springs 22, restoring the compressed springs 22, driving the movable blocks 21 by the springs 22 after restoration, driving the resisting blocks 23 by the movable blocks 21 to clamp the adsorption potteries 12, and enabling the adsorption potteries 12 to be stably placed;
step four: the gas-guide tube 4 is respectively connected with the gas tank 2 and the adsorption pot 12, and the gas-guide tube 4 is erected on the supporting block 5 at the top of the supporting rod 17;
step five: the electric connecting wire 7 on the resistance meter 16 is connected with a conducting wire in the adsorption canister 12, and the test is carried out by vacuumizing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an experimental apparatus for research of coal body resistivity containing gas, includes air duct (4) and resistance appearance (16), one side of resistance appearance (16) is provided with first constant temperature water bath (1), the opposite side is provided with second constant temperature water bath (11), gas tank (2) have been placed to the inside of first constant temperature water bath (1), the inside of second constant temperature water bath (11) has been placed and has been adsorbed fou (12), and adsorb the inside of fou (12) and have been placed coal sample (10), the top dismouting that adsorbs fou (12) is provided with insulating cover (9), the one end and the gas tank (2) of air duct (4) are connected, the other end and adsorption fou (12) are connected, its characterized in that: still include firm mechanism, firm mechanism includes spacing seat (13), recess (19), perforation (20), movable block (21), spring (22) and support piece (23), spacing seat (13) are fixed in the interior bottom of second constant temperature water bath case (11) and the top of spacing seat (13) is seted up and is supplied to adsorb fou (12) male perforation (20), set up symmetrically distributed's recess (19) on spacing seat (13), the one end embedding recess (19) of movable block (21), the other end stretch out recess (19) and be connected with and adsorb the support piece (23) that fou (12) offset, the one end of spring (22) is connected with the embedding end face of movable block (21), the tank bottom of the other end and recess (19) is connected.
2. The experimental device for researching the resistivity of the gas-containing coal body as claimed in claim 1, wherein: the movable block (21) is of a cuboid structure, and a gap is reserved between the inner side faces of the spring (22) and the groove (19).
3. The experimental facility and the use method for the resistivity research of the gas-containing coal body according to claim 1, wherein the experimental facility and the use method are characterized in that: install first manometer (3) on gas tank (2), be provided with the hole of permeating water on spacing seat (13).
4. The experimental device for researching the resistivity of the gas-containing coal body as claimed in claim 1, wherein: a valve (6) is arranged on the air guide pipe (4), and a second pressure gauge (8) is also arranged on the air guide pipe (4); the air guide pipe support is characterized by further comprising a support mechanism, the support mechanism comprises a support block (5) and a support rod (17), the support block (5) is fixed to the top of the support rod (17), and the air guide pipe (4) is erected on the support block (5).
5. The experimental device for researching the resistivity of the gas-containing coal body as claimed in claim 1, wherein: an electric connection wire (7) is arranged on the resistance instrument (16), a lead is arranged in the adsorption canister (12), and the lead is connected with the electric connection wire (7).
6. The experimental device for researching the resistivity of the gas-containing coal body as claimed in claim 1, wherein: the side surface activity of resistance appearance (16) is provided with adjustable shelf (15), be provided with firm subassembly on adjustable shelf (15) and resistance appearance (16).
7. The experimental facility for studying the resistivity of the gas-containing coal body as claimed in claim 6, wherein: the stabilizing assembly comprises a movable column (14) and a socket (18), the movable column (14) is movably arranged on the movable frame (15), and the socket (18) for inserting the movable column (14) is formed in the bottom of the resistance meter (16).
8. The use method of the experimental device for the resistivity research of the gas-containing coal body according to any one of claims 1 to 7, wherein the experimental device comprises: the using method comprises the following steps:
the method comprises the following steps: placing the coal sample (10) in a drying box for drying, and measuring the resistance value of the dried coal sample (10) under different constant temperature conditions;
step two: putting the dried and cooled coal sample (10) into an adsorption pot (12), and covering an insulating cover (9);
step three: taking the adsorption potteries (12), inserting the adsorption potteries (12) into the through holes (20) of the limiting seat (13), applying pressure to the resisting block (23) when the adsorption potteries (12) are inserted, transmitting the pressed resisting block (23) to the movable block (21) and compressing the spring (22), resetting the compressed spring (22), driving the movable block (21) by the reset spring (22) and driving the resisting block (23) by the movable block (21) to clamp the adsorption potteries (12), so that the adsorption potteries (12) are stably placed;
step four: the gas guide pipe (4) is respectively connected with the gas tank (2) and the adsorption pot (12), and the gas guide pipe (4) is erected on the supporting block (5) at the top of the supporting rod (17);
step five: the electric connecting wire (7) on the resistance meter (16) is connected with a lead in the adsorption canister (12), and the test is carried out by vacuumizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110633864.7A CN113219002A (en) | 2021-06-07 | 2021-06-07 | Experimental device for research on resistivity of gas-containing coal body and using method |
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| CN202110633864.7A CN113219002A (en) | 2021-06-07 | 2021-06-07 | Experimental device for research on resistivity of gas-containing coal body and using method |
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| CN113219002A true CN113219002A (en) | 2021-08-06 |
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2021
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Application publication date: 20210806 |