Coal and rock layer gas adsorption and desorption simulation experiment equipment

Abstract

The utility model discloses coal rock layer gas adsorption and desorption simulation experiment equipment which comprises a sample rock box body, a simulation test box body is arranged on one side outside the sample rock box body, a box door is hinged to one side of the sample rock box body through a hinge, an absorption opening is formed in the upper end of one side of the sample rock box body, and the top of the simulation test box body is connected with the absorption opening through a connecting pipe. A middle through rod is arranged in the sample rock box body, a connecting plate is arranged at the bottom of the middle through rod, a material turning plate is arranged at the bottom of the connecting plate, a gas guide port is formed in the middle through rod above the connecting plate, and a cleaning mechanism corresponding to the filter screen is arranged on one side of the middle through rod; the through rod penetrates through the sample rock box body and is connected with a rotating mechanism, the rotating mechanism is connected with an air inlet pipe through a rotating joint, and an air inlet control valve is arranged on the air inlet pipe. By arranging a series of structures, synchronous operation of material turning, air inlet and filter screen cleaning is achieved, and simulation experiment operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas desorption experiment technical field, concretely is a coal seam gas adsorption and desorption simulation experiment equipment. BACKGROUND

[0002] Coal seam refers to the sedimentary rock series containing coal seam, usually called coal series. Coal series is the abbreviation of coal-bearing rock series, which refers to a set of sedimentary rock series containing coal seam and having genetic relationship formed by continuous deposition in a certain geological period. Gas adsorption and desorption refers to the transformation of the existing state of gas in coal rock body with the change of pressure and temperature. Gas adsorption and desorption simulation experiment is a method for studying the adsorption and desorption process of gas (mainly methane) in coal seam through experimental means.

[0003] At present, the coal seam gas adsorption and desorption simulation experiment equipment has the problems of uneven contact with air, slow experiment, influence on experimental operation, and dust carried in the experimental gas generated by stirring the sample rock, which affects the accuracy of the experimental results. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a coal seam gas adsorption and desorption simulation experiment equipment to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a coal seam gas adsorption and desorption simulation experiment equipment, comprising a sample rock box body, a simulation test box body is arranged on one side of the outer part of the sample rock box body, a box door is hingedly connected to one side of the sample rock box body, an absorption port is arranged at the upper end of one side of the sample rock box body, a connecting pipe is connected between the top of the simulation test box body and the absorption port, a filter screen is arranged in the inner part of the end of the absorption port away from the connecting pipe, a central through rod is arranged in the inner part of the sample rock box body, a connecting plate is arranged at the bottom of the central through rod, a turnover plate is arranged at the bottom of the connecting plate, a gas guide port is arranged on the central through rod above the connecting plate, a cleaning mechanism corresponding to the filter screen is arranged on one side of the central through rod, the central through rod penetrates the sample rock box body and is connected with a rotating mechanism, the rotating mechanism is connected with an air inlet pipe through a rotary joint, and an air inlet control valve is arranged on the air inlet pipe.

[0006] Preferably, the rotating mechanism comprises a worm gear, a worm, a servo motor and a motor bracket, the top of the sample rock box body is provided with the worm gear, the top of the central through rod is connected with the worm gear, the top of the worm gear is provided with the rotary joint, the rotary joint is in communication between the worm gear and the central through rod, the worm is meshed on one side of the worm gear, the top of the sample rock box body is provided with the motor bracket and a support frame, the worm is arranged between the motor bracket and the support frame, and one end of the worm is connected with the output end of the servo motor on the motor bracket through a shaft coupling.

[0007] Preferably, the air inlet pipe is arranged on the support frame, an air flow meter is arranged on the air inlet pipe, and a filter screen is arranged in the air inlet pipe.

[0008] Preferably, the cleaning mechanism comprises a connecting rod, a cleaning plate and a brush, the cleaning plate is arranged on one side of the middle through rod through the connecting rod, the brush is arranged on the side of the cleaning plate away from the connecting rod, and the brush is arranged in contact with the filtering surface of the filter screen on the side away from the cleaning plate.

[0009] Preferably, the filtering surface of the filter screen is arranged in a circular arc surface structure.

[0010] Preferably, the air guide port is arranged in a plurality of air guide ports, and the air guide port is arranged in an inclined downward manner.

[0011] Preferably, the turning plate is arranged in a plurality of turning plates, and the turning plate is arranged in a triangular structure.

[0012] Compared with the prior art, the coal rock gas adsorption and desorption simulation experiment equipment has the following beneficial effects:

[0013] 1. The coal rock gas adsorption and desorption simulation experiment equipment, through the middle through rod arranged in the sample rock box body, cooperates with the worm gear, the worm and the servo motor, realizes the rotation of the middle through rod in the sample rock box body, the connecting plate and the turning plate on the middle through rod have the function of turning the sample rock gas adsorption and desorption simulation experiment, the air guide port on the middle through rod cooperates with the rotary joint and the air inlet pipe, realizes the rotary air inlet of the simulation experiment, and the turning and the air inlet are used for increasing the uniformity of the sample rock simulation experiment.

[0014] 2. The coal rock gas adsorption and desorption simulation experiment equipment, through the filter screen arranged in the absorption port, is used for filtering the dust in the sample rock box body simulation experiment into the simulation test box body, in combination with the cleaning plate and the brush arranged on the middle through rod, is used for cleaning the filter screen, the simulation experiment absorption and filtration are smooth, realizes the synchronous operation of the turning, the air inlet and the filter screen cleaning, and the simulation experiment operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure schematic view of the utility model;

[0016] Fig. 2 It is a structure schematic view of the middle through rod in the utility model;

[0017] Fig. 3 It is a structure schematic view of the worm in the utility model.

[0018] In the figure: 1, sample rock box body; 11, simulation test box body; 2, middle through rod; 21, gas guide port; 22, connecting plate; 23, material turning plate; 24, connecting rod; 25, cleaning plate; 26, brush; 3, suction port; 4, connecting pipe; 5, filter screen; 6, worm gear; 61, worm; 62, servo motor; 63, motor bracket; 7, rotary joint; 8, air inlet pipe; 9, air inlet control valve; 10, support frame. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] As Figs. 1 to 3As shown, the coal rock gas adsorption and desorption simulation experiment equipment of the embodiment comprises a sample rock box body 1, a simulation test box body 11 is arranged on one side of the outside of the sample rock box body 1, a box door is hingedly arranged on one side of the sample rock box body 1, the box door and the sample rock box body 11 are closed and sealed, an absorption port 3 is arranged at the upper end of one side of the sample rock box body 1, the top of the simulation test box body 11 is connected with the absorption port 3 through a connecting pipe 4, a filter screen 5 is arranged in the end of the absorption port 3 away from the connecting pipe 4, a middle passing rod 2 is arranged in the sample rock box body 1, a connecting plate 22 is arranged at the bottom of the middle passing rod 2, a turnover plate 23 is arranged at the bottom of the connecting plate 22, a gas guide port 21 is arranged on the middle passing rod 2 above the connecting plate 22, a cleaning mechanism corresponding to the filter screen 5 is arranged on one side of the middle passing rod 2, the middle passing rod 2 penetrates through the sample rock box body 1 and is connected with a rotating mechanism, the rotating mechanism is connected with an air inlet pipe 8 through a rotary joint 7, an air inlet control valve 9 is arranged on the air inlet pipe 8, the sample rock gas adsorption and desorption simulation experiment turnover function is realized, the rotary air inlet of the simulation experiment is realized, the turnover and the air inlet are both used for increasing the uniformity of the sample rock simulation experiment, the filter screen 5 in the absorption port 3 is used for filtering the dust in the sample rock box body 1 into the simulation test box body 11, the simulation experiment absorption and filtration are smooth, the synchronous operation of the turnover, the air inlet and the filter screen 5 cleaning is realized, and the simulation experiment operation is convenient.

[0022] Specifically, the rotating mechanism comprises a worm wheel 6, a worm 61, a servo motor 62 and a motor frame 63, the top of the sample rock box body 1 is provided with the worm wheel 6, the top of the middle passing rod 2 is connected with the worm wheel 6, the top of the worm wheel 6 is provided with the rotary joint 7, the rotary joint 7 is in communication with the worm wheel 6 and the middle passing rod 2, the worm 61 is meshed on one side of the worm wheel 6, the top of the sample rock box body 1 is provided with the motor frame 63 and a support frame 10, the worm 61 is arranged between the motor frame 63 and the support frame 10, one end of the worm 61 is connected with the output end of the servo motor 62 on the motor frame 63 through a shaft coupling, the servo motor 62 drives the worm 61 to rotate between the support frame 10 and the motor frame 63, the rotation of the worm 61 drives the worm wheel 6 meshed with the worm 61 to rotate, and the rotation of the worm wheel 6 drives the middle passing rod 2 to rotate in the sample rock box body 1.

[0023] Further, the air inlet pipe 8 is arranged on the support frame 10, the air inlet pipe 8 is supported and stabilized, an air flow meter is arranged on the air inlet pipe 8, the air flow meter is used for air inlet metering, a filter screen is arranged in the air inlet pipe 8, and the filter screen is used for air inlet filtration.

[0024] Further, the cleaning mechanism comprises a connecting rod 24, a cleaning plate 25 and a brush 26, the cleaning plate 25 is arranged on one side of the middle passing rod 2 through the connecting rod 24, the brush 26 is arranged on the side of the cleaning plate 25 away from the connecting rod 24, the side of the brush 26 away from the cleaning plate 25 is in contact with the filtering surface of the filter screen 5, in the process of the rotation of the middle passing rod 2, the cleaning plate 25 and the brush 25 are driven to rotate in the sample rock box body 1 through the connecting rod 24, and the rotation of the brush 26 is used for cleaning the filter screen 5.

[0025] Further, the filtering surface of the filter screen 5 is arranged in a circular arc surface structure, and the filtering surface of the filter screen 5 is adapted to the rotating brush 26.

[0026] Further, the gas guide port 21 is provided with a plurality of gas guide ports 21, and the gas guide ports 21 are arranged in a downward inclined manner, and the gas guide ports 21 are easy to contact the sample rock.

[0027] Further, the turning plate 23 is provided with a plurality of turning plates 23, and the turning plate 23 is arranged in a triangular structure, and the turning plate 23 has a large turning operation space and good effect.

[0028] The use method of the embodiment is as follows: the sample rock is placed in the sample rock box body 1, the box door is closed, the servo motor 62 drives the worm 61 to rotate between the support frame 10 and the motor frame 63, the worm 61 drives the worm gear 6 engaged with the worm 61 to rotate, the worm gear 6 drives the middle connecting rod 2 to rotate in the sample rock box body 1, the middle connecting rod 2 drives the gas guide port 21, the connecting plate 22, the turning plate 23, the connecting rod 24, the cleaning plate 25 and the brush 26 to rotate in the sample rock box body 1, the turning plate 23 turns the sample rock in the sample rock box body 1, the brush 26 cleans the filtering surface of the filter screen 5, the air inlet control valve 9 on the air inlet pipe 8 is opened, air is guided into the middle connecting rod 2 through the air inlet pipe 8 and the rotating joint 7, and the gas guide port 21 on the middle connecting rod 2 guides air into the sample rock box body 1, and the experimental gas generated by the sample rock gas adsorption and desorption simulation experiment enters the simulation test box body 11 through the connecting pipe 4 from the absorption port 3. The simulation test equipment realizes the rotation of the middle connecting rod 2 in the sample rock box body 1, has the function of sample rock gas adsorption and desorption simulation experiment turning, realizes the rotary air inlet of the simulation experiment, and the turning and air inlet are used to increase the uniformity of the sample rock simulation experiment. The filter screen 5 in the absorption port 3 is used to filter the dust in the sample rock box body 1 into the simulation test box body 11, the cleaning plate 25 and the brush 26 arranged on the middle connecting rod 2 are combined, the brush 26 rotates to clean the filter screen 5 during the rotation of the middle connecting rod 2, the simulation experiment is smooth, the turning, air inlet and filter screen 5 cleaning are realized synchronously, and the simulation experiment is convenient to operate.

[0029] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A coal rock gas adsorption and desorption simulation experiment device, comprising a sample rock box body (1), characterized in that: The side of the sample rock box body (1) is provided with a simulation test box body (11), one side of the sample rock box body (1) is hingedly provided with a box door, the upper end suction port (3) of one side of the sample rock box body (1), the top of the simulation test box body (11) is connected with the suction port (3) through a connecting pipe (4), the inside of the end of the suction port (3) away from the connecting pipe (4) is provided with a filter screen (5), the inside of the sample rock box body (1) is provided with a middle through rod (2), the bottom of the middle through rod (2) is provided with a connecting plate (22), the bottom of the connecting plate (22) is provided with a material turning plate (23), the middle through rod (2) above the connecting plate (22) is provided with a gas guide port (21), one side of the middle through rod (2) is provided with a cleaning mechanism corresponding to the filter screen (5), the middle through rod (2) penetrates the sample rock box body (1) and is connected with a rotating mechanism, the rotating mechanism is connected with an air inlet pipe (8) through a rotary joint (7), the air inlet pipe (8) is provided with an air inlet control valve (9).

2. The coal bed gas adsorption and desorption simulation experiment device according to claim 1, characterized in that: The rotating mechanism comprises a worm wheel (6), a worm (61), a servo motor (62) and a motor frame (63), the top of the sample rock box body (1) is provided with the worm wheel (6), the top of the middle through rod (2) is connected with the worm wheel (6), the top of the worm wheel (6) is provided with the rotary joint (7), the rotary joint (7) is in communication between the worm wheel (6) and the middle through rod (2), one side of the worm wheel (6) is engaged with the worm (61), the top of the sample rock box body (1) is provided with the motor frame (63) and a support frame (10), the worm (61) is arranged between the motor frame (63) and the support frame (10), one end of the worm (61) is connected with the output end of the servo motor (62) on the motor frame (63) through a shaft coupling.

3. The coal bed gas adsorption and desorption simulation experiment device according to claim 2, characterized in that: The air inlet pipe (8) is arranged on the support frame (10), the air inlet pipe (8) is provided with an air flow meter, the inside of the air inlet pipe (8) is provided with a filter screen.

4. The coal bed gas adsorption and desorption simulation experiment device according to claim 1, characterized in that: The cleaning mechanism comprises a connecting rod (24), a cleaning plate (25) and a brush (26), one side of the middle through rod (2) is provided with the cleaning plate (25) through the connecting rod (24), one side of the cleaning plate (25) away from the connecting rod (24) is provided with the brush (26), one side of the brush (26) away from the cleaning plate (25) is in contact with the filtering surface of the filter screen (5).

5. The coal bed gas adsorption and desorption simulation experimental apparatus according to claim 4, characterized in that: The filtering surface of the filter screen (5) is provided in a circular arc surface structure.

6. The coal bed gas adsorption and desorption simulation experiment device according to claim 1, characterized in that: The gas guide port (21) is provided with a plurality of gas guide ports (21), and the gas guide ports (21) are inclined downward.

7. The coal bed gas adsorption and desorption simulation experiment device according to claim 1, characterized in that: The material turning plate (23) is provided with a plurality of material turning plates (23), and the material turning plates (23) are provided in a triangular structure.

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