CN210571599U

CN210571599U - Coal bed gas sampling device

Info

Publication number: CN210571599U
Application number: CN201921563188.5U
Authority: CN
Inventors: 冯晨; 刘龙斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-19
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a coal bed gas sampling device, the on-line screen storage device comprises a base, the inside threaded connection of a screw thread section of thick bamboo has the bracing piece, the inboard of half circle mount on a left side and half circle mount on a right side is equipped with the bottle, the joint of giving vent to anger is installed on the top of outlet duct, the one end of outlet duct is installed and is gone out the liquid joint, the one end of entry joint has the drawing liquid pump through the pipeline intercommunication. Be equipped with the joint of giving vent to anger, go out the liquid joint, entry joint and drawing liquid pump, can fill the bottle with the pure water through the drawing liquid pump, make the bottle internal no rare gas residual, through connecting entry joint and well head sample trachea, collect the coal bed gas sample, connect with the check out test set trachea through giving vent to anger, be convenient for quick installation and the dismantlement of butt joint, the sampling efficiency of coal bed gas has been improved, whole sampling device's gas tightness is fine, no other gases are sneaked into during the sample, sample purity is high, be favorable to going on of coal bed gas sample work, bring better use prospect.

Description

Coal bed gas sampling device

Technical Field

The utility model relates to a coal bed gas sampling technical field, in particular to coal bed gas sampling device.

Background

The coal bed gas is hydrocarbon gas which is stored in a coal bed, takes methane as a main component, is adsorbed on the surface of coal matrix particles as a main component, is partially dissociated in coal pores or dissolved in coal bed water, is associated mineral resources of coal, and is required to be sampled during surveying so as to analyze the reserve amount of the coal bed gas.

At present, a sampling device used on a coal bed gas site mainly comprises a gas collecting bottle, a gas sample bag and the like, the gas sample bag is often provided with rare gas residues in the manufacturing process, the sampling purity is poor, the gas collecting bottle is used for sampling by a drainage and gas collecting method, the operation is complex, the on-site sampling efficiency is low, the on-site sampling is inconvenient to use, the gas sample steel bottle used on the site has certain requirements on the pressure of a wellhead, a matched vacuumizing device is required, and the sampling device is not suitable for the coal bed gas well with low wellhead pressure.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a coal bed gas sampling device, which can effectively solve the problems of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a coal bed gas sampling device comprises a base, wherein a threaded cylinder is fixedly connected to the top of the base, a supporting rod is in threaded connection with the inside of the threaded cylinder, a left half-ring fixing frame is movably mounted on the outer side of the supporting rod, a right half-ring fixing frame is movably mounted on the outer side of the supporting rod, bottle bodies are arranged on the inner sides of the left half-ring fixing frame and the right half-ring fixing frame, limiting rings are fixedly connected to the outer sides of the bottle bodies, the number of the limiting rings is two, a top cover is in threaded connection with the top end of the bottle bodies, the top of the top cover is communicated with an air outlet pipe, an air outlet connector is mounted at the top end of the air outlet pipe, an outlet pipe is communicated with the outer side of the bottom end of the bottle bodies, a liquid outlet connector is mounted at one end of the outlet pipe, the input end of the liquid pump is communicated with a pipeline connector through a pipeline, a control valve is arranged on the outer side of the pipeline connector, and one end of the pipeline connector is communicated with a pure water storage tank.

Preferably, the number of the left half-ring fixing frame is two, the number of the right half-ring fixing frame is two, and the bottom of the limiting ring and the top of the left half-ring fixing frame are in contact with each other.

Preferably, one end of the left half-ring fixing frame and one end of the right half-ring fixing frame are in threaded connection with a fixing bolt.

Preferably, the bottom of top cap inner wall is equipped with sealed the pad, the bottom that seals up contacts with the top of bottle, sealed top of filling up is worn to establish and is sealed the inside of filling up the top and extending to the bottle by the bottom of outlet duct.

Preferably, the outer sides of the air outlet joint, the liquid outlet joint and the inlet joint are respectively provided with a one-way valve, and the air outlet joint, the liquid outlet joint and the inlet joint are standard joints.

Compared with the prior art, the utility model discloses following beneficial effect has: the coal bed gas sampling device is provided with a gas outlet joint, a liquid outlet joint, an inlet joint and a liquid pump, wherein the top end of a bottle body is in threaded connection with a top cover, a sealing gasket is arranged at the bottom of the inner wall of the top cover, so that the sealing performance of the bottle body is good, pure water can be pumped out of a pure water storage tank through the liquid pump, the bottle body is filled with the pure water through the inlet joint, no rare gas residue exists in the bottle body, the inlet joint is connected with a wellhead sampling gas pipe through taking off the pipeline, the pure water in the bottle body is discharged by opening the liquid outlet joint, the liquid outlet joint is closed after the sampling gas quantity reaches the required quantity, the collection of coal bed gas samples is realized, the gas outlet joint is connected with a detection device gas pipe, the inlet joint is connected with the output end pipeline of the liquid pump, the pure water is injected into the bottle body, so that the coal bed gas samples in, the coal bed gas sampling device is convenient to detect a coal bed gas sample, pure water is utilized to isolate external air when the gas sample is collected, the air outlet joint, the liquid outlet joint and the inlet joint are standard joints, the quick installation and disassembly of the joints are convenient, the sampling efficiency of the coal bed gas is improved, the air tightness of the whole sampling device is good, no other gas is mixed in during sampling, the sampling purity is high, the assistance of a vacuumizing device is not needed, the sampling device can be suitable for a coal bed gas well with lower wellhead pressure, the left half-ring fixing frame and the right half-ring fixing frame are fixed through the threaded cylinder, the supporting rod is in threaded connection with the inside of the threaded cylinder, the bottle body can be placed into the inner sides of the two fixing frames through the fixing bolts, the left half-ring fixing frame and the right half-ring fixing frame are fixed through the fixing bolts, the limiting ring is fixedly connected to the, is beneficial to the coal bed gas sampling work.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the bottle body of the present invention.

In the figure: 1. a base; 2. a threaded barrel; 3. a support bar; 4. a left half-turn fixing frame; 5. a right half-ring fixing frame; 6. a bottle body; 7. a limiting ring; 8. fixing the bolt; 9. a top cover; 10. a gasket; 11. an air outlet pipe; 12. an air outlet joint; 13. an outlet pipe; 14. a liquid outlet joint; 15. an inlet tube; 16. an inlet fitting; 17. a liquid pump; 18. a pipe joint; 19. a pure water storage tank.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-2, a coal bed gas sampling device comprises a base 1, a threaded cylinder 2 is fixedly connected to the top of the base 1, a support rod 3 is connected to the inner portion of the threaded cylinder 2 through threads, a left half-ring fixing frame 4 is movably installed on the outer side of the support rod 3, a right half-ring fixing frame 5 is movably installed on the outer side of the support rod 3, bottle bodies 6 are arranged on the inner sides of the left half-ring fixing frame 4 and the right half-ring fixing frame 5, the support rod 3 can be rotated to drive the bottle bodies 6 to move, so that the height of the bottle bodies 6 can be adjusted, a limiting ring 7 is fixedly connected to the outer side of the bottle bodies 6, the number of the limiting rings 7 is two, a top cover 9 is connected to the top end of the bottle bodies 6 through threads, an air outlet pipe 11 is communicated to the top of the top cover 9, an air outlet joint, a liquid outlet joint 14 is installed at one end of the outlet pipe 13, the liquid outlet joint 14 is used for discharging pure water, an inlet pipe 15 is communicated with the outer side of the bottom end of the bottle body 6, an inlet joint 16 is installed at one end of the inlet pipe 15, one end of the inlet joint 16 is communicated with a liquid pump 17 through a pipeline, the input end of the liquid pump 17 is communicated with a pipeline joint 18 through a pipeline, a control valve is arranged at the outer side of the pipeline joint 18, one end of the pipeline joint 18 is communicated with a pure water storage tank 19, and pure water can be injected into the bottle body 6 through the inlet joint 16 through the.

The number of the left half-ring fixing frames 4 is two, the number of the right half-ring fixing frames 5 is two, and the bottom of the limiting ring 7 is in contact with the tops of the left half-ring fixing frames 4 and the right half-ring fixing frames 5, so that the position of the bottle body 6 is limited by the limiting ring 7, and the bottle body 6 is placed stably; one end of the left half-ring fixing frame 4 and one end of the right half-ring fixing frame 5 are in threaded connection with fixing bolts 8, so that one end of the left half-ring fixing frame 4 and one end of the right half-ring fixing frame 5 can be conveniently fixed through the fixing bolts 8; the bottom of the inner wall of the top cover 9 is provided with a sealing gasket 10, the bottom of the sealing gasket 10 is contacted with the top end of the bottle body 6, the bottom end of the air outlet pipe 11 penetrates through the top of the sealing gasket 10 and extends into the bottle body 6, and the sealing performance of the bottle body 6 can be good under the action of the sealing gasket 10; the outer sides of the air outlet joint 12, the liquid outlet joint 14 and the inlet joint 16 are all provided with one-way valves, and the air outlet joint 12, the liquid outlet joint 14 and the inlet joint 16 are all standard joints, so that the air outlet joint 12, the liquid outlet joint 14 and the inlet joint 16 can be conveniently and rapidly mounted and dismounted.

It should be noted that the utility model relates to a coal bed gas sampling device, when using, at first put bottle 6 into the inboard of left half circle mount 4 and right half circle mount 5, fix two mounts through fixing bolt 8, utilize spacing collar 7 to carry out position limitation to bottle 6, make bottle 6 place firmly, can adjust the height of bottle 6 through rotating the bracing piece 3, be favorable to the going on of coal bed gas sampling work, then pour into pure water into bottle 6, because the top threaded connection of bottle 6 has top cap 9, the bottom of top cap 9 inner wall is equipped with the sealed pad 10, make the leakproofness of bottle 6 fine, through linking up the pipeline of inlet joint 16 and drawing liquid pump 17 output end, draw out pure water from pure water storage tank 19 through drawing liquid pump 17, fill bottle 6 with pure water from inlet joint 16, open the liquid outlet joint 14 after filling for a period and then close, so that no rare gas remains in the bottle body 6, then the pipeline is taken down and the inlet connector 16 is connected with a wellhead sampling air pipe, the liquid outlet connector 14 is opened to discharge pure water in the bottle body 6, the liquid outlet connector 14 is closed after the sampling gas quantity reaches the required quantity, the pure water in the bottle body 6 is not required to be completely discharged, the collection of the coal bed gas sample is realized, then the gas outlet connector 12 is connected with a detection equipment air pipe, the inlet connector 16 is connected with an output end pipeline of the liquid pump 17, the pure water is injected into the bottle body 6, so that the coal bed gas sample in the bottle body 6 is discharged from the gas outlet connector 12, the detection of the coal bed gas sample is convenient, the external air is isolated by the pure water when the gas sample is collected, and the gas outlet connector 12, the liquid outlet connector 14 and the inlet connector 16 are standard connectors, the quick installation and disassembly of the connectors are convenient, the sampling efficiency of the coal bed gas is, no other gas is mixed in during the sample, and sample purity is high, need not evacuating device's assistance, can be applicable to the lower coal bed gas well of well head pressure, is favorable to people's use, and is comparatively practical.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a coal bed gas sampling device, includes base (1), its characterized in that: the bottle comprises a base (1), a threaded cylinder (2) is fixedly connected to the top of the base (1), a supporting rod (3) is in threaded connection with the inside of the threaded cylinder (2), a left half-ring fixing frame (4) is movably mounted on the outer side of the supporting rod (3), a right half-ring fixing frame (5) is movably mounted on the outer side of the supporting rod (3), bottles (6) are arranged on the inner sides of the left half-ring fixing frame (4) and the right half-ring fixing frame (5), limiting rings (7) are fixedly connected to the outer side of the bottles (6), the number of the limiting rings (7) is two, a top cover (9) is in threaded connection with the top end of each bottle (6), an air outlet pipe (11) is communicated with the top of the top cover (9), an air outlet joint (12) is installed at the top end of the air outlet pipe (11), an outlet pipe (13) is communicated with, the outside intercommunication of bottle (6) bottom has inlet tube (15), inlet joint (16) are installed to the one end of inlet tube (15), the one end of inlet joint (16) is through pipeline intercommunication have drawing liquid pump (17), the input of drawing liquid pump (17) is through pipeline intercommunication have pipeline joint (18), the outside of pipeline joint (18) is equipped with the control valve, the one end intercommunication of pipeline joint (18) has pure water holding tank (19).

2. A coal bed gas sampling apparatus according to claim 1, wherein: the quantity of the left half-ring fixing frame (4) is two, the quantity of the right half-ring fixing frame (5) is two, and the bottom of the limiting ring (7) is in contact with the top of the left half-ring fixing frame (4) and the top of the right half-ring fixing frame (5).

3. A coal bed gas sampling apparatus according to claim 1, wherein: one end of the left half-ring fixing frame (4) and one end of the right half-ring fixing frame (5) are in threaded connection with a fixing bolt (8).

4. A coal bed gas sampling apparatus according to claim 1, wherein: the bottom of top cap (9) inner wall is equipped with sealed pad (10), the bottom of sealed pad (10) contacts with the top of bottle (6), the inside of wearing to establish sealed pad (10) top and extending to bottle (6) is worn to the bottom of outlet duct (11).

5. A coal bed gas sampling apparatus according to claim 1, wherein: the outer sides of the air outlet joint (12), the liquid outlet joint (14) and the inlet joint (16) are all provided with one-way valves, and the air outlet joint (12), the liquid outlet joint (14) and the inlet joint (16) are all standard joints.