Metering box for coal bed gas production

Abstract

The utility model relates to a metering box for coal bed gas production. According to the technical scheme, the device comprises a gas storage tank, a rectangular groove is formed in the middle of the top of the gas storage tank, an inner pipe is downwards arranged on the tank wall on the left side of the rectangular groove, a sinking table is downwards arranged on an opening in the upper end of the inner pipe, threads are formed in the inner wall of the pipe on the lower portion of the sinking table, and a filter assembly is screwed in the inner pipe and comprises an installation pipe matched with the interior of the inner pipe in shape; a boss is arranged at the lower end of the inner pipe wall of the mounting pipe, double rings are inserted into the upper pipe wall of the boss, the double rings and the edge of a cloth bag opening of a lower cloth bag are pressed together, an air filter element is inserted into the upper pipe wall of each double ring, an air inlet pipe is screwed into a pipe wall opening in the upper portion of each air filter element, and a first air valve is installed in the middle of the right pipe wall of each air inlet pipe; an exhaust pipe is arranged on the upper portion of the right side box body wall of the air storage box and provided with a second air valve. The utility model has the beneficial effects that the detachable and replaceable filter assembly is designed, so that impurities and water vapor are effectively removed, and the collection accuracy and the use convenience are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal bed gas sampling technical field relates to a metering box for coal bed gas production. BACKGROUND

[0002] Coal bed gas is the main component of methane, is coal's associated mineral resources, belongs to unconventional natural gas, is clean, high -quality energy and chemical raw material. Exploiting and utilizing coal bed gas resources, not only can avoid the coal bed gas waste caused by coal mining, also can optimize our country's energy structure, improves coal mine safety production condition, reduces greenhouse gas emission and protects atmospheric environment. When coal bed gas is mined and is transported, the coal bed gas of production needs sampling and metering, here needs to use metering box. The existing metering box generally has gas metering appearance built -in, because the existing metering box lacks corresponding filter assembly, the coal bed gas directly discharged from pipeline, is mixed with water and impurities, these things can have greater influence to metering appearance, thereby influence the result of metering.

[0003] Therefore, the utility model provides a metering box for coal bed gas production, solves above -mentioned problem. UTILITY MODEL CONTENT

[0004] In view of the problems existing in the prior art, the utility model discloses a metering box for coal bed gas production, adopts the technical scheme, including the gas storage tank, the top middle of the gas storage tank is provided with a rectangular groove, the left side of the rectangular groove is provided with an inner pipe, the upper end of the inner pipe is provided with a sink, the inner wall of the lower part of the sink is provided with a thread, the filter assembly is screwed in the inner pipe, the filter assembly includes an installation pipe matched with the inner shape of the inner pipe, the lower end of the inner wall of the installation pipe is provided with a boss, the upper part of the boss is inserted with a double ring, the double ring is pressed and assembled with the bag port edge of the lower bag, the upper part of the double ring is inserted with an air filter element, the air filter element is screwed in the upper part of the pipe wall and is provided with an air inlet pipe, the right side of the air inlet pipe is provided with a first gas valve, the upper part of the right side of the gas storage tank is provided with an exhaust pipe, and a second gas valve is installed on the exhaust pipe.

[0005] As a preferred scheme of the utility model, the left and right side of the upper end of the rectangular groove is connected with a handle.

[0006] As a preferred scheme of the utility model, the upper part of the sink is provided with a sealing pad, and the lower end of the inner pipe is fixedly connected with a filter screen pipe;By setting the filter screen pipe, the inflated bag can be blocked, avoiding the bending to the right side under the air pump, affecting the use effect.

[0007] As a preferred scheme of the utility model, the upper end of the air inlet pipe is provided with a loose joint valve;By adopting the loose joint valve, the air inlet pipe can be quickly connected with the gas extraction pipe on the coal bed gas pipeline.

[0008] As a preferred scheme of the utility model, the front side of the rectangular recess is provided with a control panel with meter function, and the rear side of the rectangular recess is provided with a lithium battery.

[0009] As a preferred scheme of the utility model, the box wall on the right side of the rectangular recess is provided with an air extraction pump.

[0010] The utility model discloses the beneficial effects: through setting up the inner tube on the left side of the gas storage tank, the filter assembly with air filter core and cloth bag is screwed in the inner tube, can effectively filter the impurity, moisture in coalbed gas, thereby reducing the interference to the meter, improves the accuracy of meter data, simultaneously, filter assembly can be quickly removed from the gas storage tank, replaces air filter core and cloth bag, thereby the convenience of use. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the whole structure schematic view of the utility model;

[0012] Fig. 2 It is the gas storage tank sectional view of the utility model;

[0013] Fig. 3 It is the filter assembly sectional view of the utility model.

[0014] In the drawing: 1-gas storage tank, 2-filter assembly, 3-air inlet pipe, 4-control panel, 5-lithium battery, 6-air extraction pump, 11-rectangular recess, 12-inner tube, 121-sink, 13-exhaust pipe, 14-second gas valve, 15-lifting handle, 16-sealing gasket, 17-filter screen pipe, 21-mounting pipe, 211-convex table, 22-double ring, 23-cloth bag, 24-air filter core, 31-first gas valve, 32-living valve. DETAILED DESCRIPTION

[0015] Example 1

[0016] As Figs. 1 to 3The utility model discloses a kind of metering tanks for coalbed gas production, the technical scheme adopted is, including gas storage tank 1, the top middle of gas storage tank 1 is opened rectangular groove 11, the inner tube 12 is opened downward in the left side tank body wall of rectangular groove 11, the upper end opening of inner tube 12 is opened downward sunken platform 121, the inner wall of pipe of sunken platform 121 lower part is opened thread, the right side tank body wall of gas storage tank 1 upper part is opened exhaust pipe 13, second air valve 14 is installed on exhaust pipe 13, the tank body wall of rectangular groove 11 upper end left and right sides is connected with handle 15, the upper part of sunken platform 121 is provided with sealing pad 16, the lower end of inner tube 12 is fixedly connected filter screen pipe 17, filter assembly 2 is screwed in inner tube 12, filter assembly 2 includes installation pipe 21 with the internal shape of inner tube 12 is adapted, the lower end of the inner wall of installation pipe 21 is opened boss 211, the upper part pipe wall of boss 211 is inserted double ring 22, double ring 22 is pressed together with the bag mouth edge of cloth bag 23 of lower part between, the upper part pipe wall of double ring 22 is inserted air filter element 24, the pipe wall mouth of air filter element 24 upper part is screwed into air inlet pipe 3, the right side pipe wall of air inlet pipe 3 is installed first air valve 31 in the middle, the upper end pipe orifice of air inlet pipe 3 is provided with loose joint valve 32, the front side of rectangular groove 11 is installed control panel 4 with meter function, the rear side of rectangular groove 11 is installed lithium battery 5, the tank body wall of rectangular groove 11 right side is installed suction pump 6.

[0017] The working principle of the utility model: in use, the device is connected by screwing the loose joint valve 32 on the upper end of the left air inlet pipe 3 with the gas sampling pipe of coalbed gas pipeline, then the suction pump 6 is opened, the air in the gas storage tank 1 is sucked away, the degree of extraction is judged by observing the pressure value on the control panel 4, after the extraction standard is reached, the gas sampling pipe valve and the first air valve 31 of the coalbed gas pipeline are stopped, in this process, the coalbed gas enters the air filter element 24 of filter assembly 2 through the air inlet pipe 3, then passes through the cloth bag 23 below, and the impurities and water vapor in the coalbed gas are effectively filtered through double filtration, the metering data on the control panel 4 is observed, until the corresponding collection value is reached, the gas sampling pipe valve and the first air valve 31 of the coalbed gas pipeline are closed, and the coalbed gas sample in the collection tank can be discharged by opening the second air valve 14 on the exhaust pipe 13, and when air filter element 24 and cloth bag 23 need to be replaced in later period, air inlet pipe 3 can be unscrewed, and the corresponding air filter element 24 and cloth bag 23 can be taken out in sequence.

[0018] The electrical connection mode or structure not described in detail in the present application is prior art.

[0019] Although the specific embodiments of the utility model have been described in detail above, the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model, and the modification or deformation without creative labor is still within the protection range of the utility model.

Claims

1. A metering tank for coal bed gas production, characterized by: The utility model provides a kind of gas storage tank, which comprises a gas storage tank (1), a rectangular recess (11) is formed in the middle of the top of the gas storage tank (1), an inner tube (12) is formed downward in the tank wall on the left side of the rectangular recess (11), an upper end of the inner tube (12) is opened downward to form a sunken platform (121), a thread is formed in the inner wall of the tube at the lower part of the sunken platform (121), a filter assembly (2) is screwed in the inner tube (12), the filter assembly (2) comprises a mounting tube (21) that is adapted to the internal shape of the inner tube (12), a boss (211) is formed in the inner wall of the mounting tube (21) at the lower end, a double ring (22) is inserted in the upper part of the tube wall of the boss (211), a cloth bag (23) is pressed together with the bag opening edge between the double ring (22), an air filter (24) is inserted in the upper part of the tube wall of the double ring (22), an air inlet tube (3) is screwed in the upper part of the tube wall of the air filter (24), a first air valve (31) is mounted in the middle of the right side tube wall of the air inlet tube (3), an exhaust tube (13) is formed in the upper part of the right side tank wall of the gas storage tank (1), a second air valve (14) is mounted on the exhaust tube (13).

2. The metering tank for coal bed gas production according to claim 1, characterized in that: Handle (15) is connected to the tank wall on the left and right sides of the upper end of the rectangular recess (11).

3. The metering tank for coal bed gas production of claim 1, wherein: A sealing gasket (16) is provided on the upper part of the sunken platform (121), and a filter screen tube (17) is fixedly connected to the lower end of the inner tube (12).

4. The metering tank for coal bed gas production of claim 1, wherein: A loose valve (32) is provided on the upper end of the air inlet tube (3).

5. The metering tank for coal bed gas production of claim 1, wherein: A control panel (4) with a meter function is mounted on the front side of the rectangular recess (11), and a lithium battery (5) is mounted on the back side of the rectangular recess (11).

6. The metering tank for coal bed gas production of claim 1, wherein: An air suction pump (6) is mounted on the tank wall on the right side of the rectangular recess (11).

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