CN212722245U

CN212722245U - Sampling device for shale gas geological exploration

Info

Publication number: CN212722245U
Application number: CN202021447235.2U
Authority: CN
Inventors: 曹涛涛; 刘虎; 邓模; 曹清古
Original assignee: Hunan University of Science and Technology
Current assignee: Hunan University of Science and Technology
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-03-16
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses a shale gas sampling device for geological exploration, one side of a first cylinder body is communicated with an air duct through a pipeline, one side of the air duct, which is far away from the first cylinder body, is communicated with a second cylinder body through a pipeline, the inner cavity of the second cylinder body is provided with a third piston, one side of the third piston is fixed with a second rod body which runs through the second cylinder body, one end of the second rod body, which is far away from the third piston, is fixed at the top end of a baffle plate, the baffle plate which can move back and forth is arranged, when the air pressure in the inner cavity of the second cylinder body is overlarge, the air pressure pushes the first piston to move, thereby driving the second rod body in the inner cavity of the second cylinder body to move, and then the baffle plate is driven to move, so as to block the air flow, thereby reducing the air pressure in the inner cavity of the second cylinder body until reaching a balanced state, the utility model can meet the, the air pressure can be adjusted to different air pressures, and the sampling device cannot be damaged.

Description

Sampling device for shale gas geological exploration

Technical Field

The utility model relates to a shale gas geological exploration sampling technical field specifically is a sampling device for shale gas geological exploration.

Background

The shale gas is natural gas which is rich in organic matters, has certain commercial values of biogenesis, pyrolytic genesis and mixed formation of biogenesis and pyrolytic genesis due to organic matter adsorption or cracks and matrix pores in rock in mature dark shale or high-carbon shale, and is endowed with unconventional natural gas in a storage rock system mainly based on the organic-rich shale. The gas is a biochemical cause gas, a thermal cause gas or a mixture of the biochemical cause gas and the thermal cause gas which are continuously generated, can exist in natural cracks and pores in a free state, exist on the surfaces of kerogen and clay particles in an adsorption state, and are stored in the kerogen and asphaltene in a dissolving state in a very small amount, and the proportion of the free gas is generally between 20 and 85 percent.

The inner cavity of the shale gas pipeline is filled with shale gas, so that the gas pressure is large, the gas pressures generated by different pipelines are different, after the existing shale gas geological exploration sampling device is used for too long time, the existing shale gas geological exploration sampling device can be damaged due to overlarge gas pressure impact of the shale gas pipeline, the traditional sampling device with long service life is not strong in bearing capacity of high-pressure shale gas due to impact abrasion, and therefore the sampling device for shale gas geological exploration is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sampling device is used in shale gas geological exploration to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a sampling device for shale gas geological exploration comprises a shale gas pipeline, wherein a first cylinder body is arranged on one side of the shale gas pipeline, a baffle is inserted into an inner cavity of the first cylinder body, a second cylinder body is fixed on one side of the first cylinder body, a first cylinder body is fixed at the top end of the second cylinder body, a second cylinder body is arranged on one side of the first cylinder body, a first guide pipe is communicated with one side of the shale gas pipeline, one side of the first guide pipe, far away from the shale gas pipeline, is communicated with the first cylinder body, a third cylinder body with one closed end is arranged on one side of the second cylinder body, far away from the first cylinder body, is communicated with a bottle body, a first piston is arranged in an inner cavity of the second cylinder body, a second piston is arranged in an inner cavity of the first cylinder body, a first rod body inserted into the inner cavity of the first cylinder body is fixed on one side of the first piston, and one end, far away from the first piston, of the first rod body is fixed on one, one side of the first cylinder body is communicated with an air guide pipe through a pipeline, one side, away from the first cylinder body, of the air guide pipe is communicated with the second cylinder body through a pipeline, a third piston is arranged in an inner cavity of the second cylinder body, a second rod body penetrating through the second cylinder body is fixed to one side of the third piston, and one end, away from the third piston, of the second rod body is fixed to the top end of the baffle.

As further preferable in the present technical solution: one side of the second cylinder body, which is far away from the third guide pipe, is communicated with the second guide pipe, and one side of the second guide pipe, which is far away from the second cylinder body, is inserted into the inner cavity of the third cylinder body.

As further preferable in the present technical solution: one side of the second cylinder body, which is far away from the first guide pipe, is communicated with a third guide pipe, and one end of the third guide pipe, which is far away from the first cylinder body, is communicated with the second cylinder body.

As further preferable in the present technical solution: the outer side of the baffle is fixed with a first sealing gasket, the bottom end of the inner cavity of the first barrel is fixed with a fixing block, and the top end of the fixing block is provided with a groove matched with the baffle.

As further preferable in the present technical solution: a through groove is formed in one side of the fixing block, second limiting blocks are fixed to two sides of the lower portion of the baffle, and a second sealing gasket is arranged on one side of the second guide pipe.

As further preferable in the present technical solution: the inner cavity two side walls of the second cylinder body are respectively fixed with a first limiting block, the outer side of the first guide pipe is provided with a first valve body, one side of the first guide pipe is provided with a pressure gauge, and the outer side of the second guide pipe is provided with a second valve body.

As further preferable in the present technical solution: the bottom end of the second cylinder body is uniformly fixed with four first supporting rods, one end, far away from the second cylinder body, of each first supporting rod is fixed to one side of the first cylinder body, two second supporting rods are fixed to one side, far away from the first supporting rods, of the first cylinder body, a base is fixed to one side, far away from the first cylinder body, of each second supporting rod, the top end of the base is fixed with the second cylinder body, and a bottle body is fixed to the top end of the base.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an installed the baffle that can carry out round trip movement, when second barrel inner chamber atmospheric pressure is too big, atmospheric pressure promotes first piston and removes to the second body of rod that drives second barrel inner chamber removes, drives the baffle removal then, stops gas flow, thereby reduces the atmospheric pressure of second barrel inner chamber, until reaching balanced state, the utility model discloses can satisfy the sample of the shale gas pipeline of different pressures, can make the adjustment to different atmospheric pressure, can not cause the damage to sampling device.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a first cylinder of the present invention;

fig. 3 is a schematic structural view of the region a of fig. 2 according to the present invention;

fig. 4 is a schematic structural diagram of the first cylinder body of the present invention.

In the figure: 1. a shale gas pipeline; 2. a first cylinder; 3. a second cylinder; 4. a first cylinder; 5. a second cylinder; 6. a baffle plate; 7. a fixed block; 8. a groove; 9. a through groove; 10. a first piston; 11. a first rod body; 12. an air duct; 13. a second piston; 14. a third piston; 15. a second rod body; 16. a first support bar; 17. a second support bar; 18. a first conduit; 19. a second conduit; 20. a first valve body; 21. a second valve body; 22. a pressure gauge; 23. a third cylinder; 24. a bottle body; 25. a base; 26. a first stopper; 27. a first gasket; 28. a second gasket; 29. a third conduit; 30. and a second limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a sampling device for shale gas geological exploration comprises a shale gas pipeline 1, a first cylinder 2 is arranged on one side of the shale gas pipeline 1, a baffle 6 is inserted into the inner cavity of the first cylinder 2, a second cylinder 3 is fixed on one side of the first cylinder 2, a first cylinder 4 is fixed at the top end of the second cylinder 3, a second cylinder 5 is arranged on one side of the first cylinder 4, a first guide pipe 18 is communicated with one side of the shale gas pipeline 1, one side of the first guide pipe 18 far away from the shale gas pipeline 1 is communicated with the first cylinder 2, a third cylinder 23 with one closed end is arranged on one side of the second cylinder 3 far away from the first cylinder 2, a bottle body 24 is communicated with one side of the third cylinder 23, a first piston 10 is arranged in the inner cavity of the second cylinder 3, a second piston 13 is arranged in the inner cavity of the first cylinder 4, a first rod 11 inserted into the inner cavity of the first cylinder 4 is fixed on one side of the first piston 10, one end of the first rod 11 far away from the first piston 10 is fixed on one side of the second piston 13, one side of the first cylinder body 4 is communicated with an air duct 12 through a pipeline, one side, far away from the first cylinder body 4, of the air duct 12 is communicated with the second cylinder body 5 through a pipeline, a third piston 14 is arranged in an inner cavity of the second cylinder body 5, one side of the third piston 14 is fixed with a second rod body 15 penetrating through the second cylinder body 5, and one end, far away from the third piston 14, of the second rod body 15 is fixed at the top end of the baffle plate 6.

In this embodiment, specifically: the side of the second cylinder 3 far from the third conduit 29 is communicated with a second conduit 19, the side of the second conduit 19 far from the second cylinder 3 is inserted into the inner cavity of the third cylinder 23, and the second conduit 19 guides the shale gas into the inner cavity of the third cylinder 23.

In this embodiment, specifically: one side of the second cylinder 3, which is far away from the first conduit 18, is communicated with a third conduit 29, one end of the third conduit 29, which is far away from the first cylinder 2, is communicated with the second cylinder 3, and the third conduit 29 conveys the shale gas from the first cylinder 2 to the inner cavity of the second cylinder 3.

In this embodiment, specifically: the outside of baffle 6 is fixed with first sealed 27 that fills up, and the inner chamber bottom mounting of first barrel 2 has fixed block 7, and the recess 8 with baffle 6 looks adaptation is seted up on the top of fixed block 7, and first sealed 27 that fills up forms sealed effect when reciprocating baffle 6.

In this embodiment, specifically: logical groove 9 has been seted up to one side of fixed block 7, and the lower part both sides of baffle 6 all are fixed with second stopper 30, and one side of second pipe 19 is equipped with the sealed pad 28 of second, and when baffle 6 blockked up second barrel 3 completely and sheltered from, a small amount of shale gas can carry out the water conservancy diversion through leading to groove 9, can not cause the too atmospheric pressure to strike first barrel 2.

In this embodiment, specifically: the two side walls of the inner cavity of the second cylinder 3 are both fixed with first limiting blocks 26, the outer side of the first conduit 18 is provided with a first valve body 20, one side of the first conduit 18 is provided with a pressure gauge 22, the outer side of the second conduit 19 is provided with a second valve body 21, and the first limiting blocks 26 can prevent the first piston 10 from blocking the orifices of the second conduit 19 and the third conduit 29.

In this embodiment, specifically: the bottom of second cylinder body 5 evenly is fixed with quantity and is four first bracing piece 16, the one end that second cylinder body 5 was kept away from to first bracing piece 16 is fixed in one side of first cylinder body 2, one side that first cylinder body 2 kept away from first bracing piece 16 is fixed with quantity and is two second bracing piece 17, one side that first cylinder body 2 was kept away from to second bracing piece 17 is fixed with base 25, the top of base 25 is fixed with second cylinder body 3, the top of base 25 is fixed with bottle 24, base 25 has the supporting role to first cylinder body 2.

Theory of operation or structure, in use, open first valve body 20 earlier, shale gas flows into first barrel 2 through first pipe 18, then flow into the inner chamber of second barrel 3 through third pipe 29, then flow into bottle 24 through second pipe 19, accomplish the sample process, atmospheric pressure when shale trachea way 1 is too big, will promote first piston 10 and remove, drive first body of rod 11 and move upwards, it removes to drive second piston 13, final second body of rod 15 drives baffle 6 and moves downwards, plug up first barrel 2, finally form a stable form, control the output rate of shale gas in the safety range, and protect whole sampling device's effect. The model of the installed pressure gauge 22 of the utility model is SIN-Y290.

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

1. The utility model provides a shale gas sampling device for geological exploration, includes shale gas pipeline (1), its characterized in that: a first cylinder (2) is arranged on one side of the shale gas pipeline (1), a baffle (6) is inserted into an inner cavity of the first cylinder (2), a second cylinder (3) is fixed on one side of the first cylinder (2), a first cylinder (4) is fixed on the top end of the second cylinder (3), a second cylinder (5) is arranged on one side of the first cylinder (4), a first guide pipe (18) is communicated with one side of the shale gas pipeline (1), one side, far away from the shale gas pipeline (1), of the first guide pipe (18) is communicated with the first cylinder (2), a third cylinder (23) with a closed end is arranged on one side, far away from the first cylinder (2), of the second cylinder (3), a bottle (24) is communicated with one side of the third cylinder (23), a first piston (10) is arranged in the inner cavity of the second cylinder (3), and a second piston (13) is arranged in the inner cavity of the first cylinder (4), one side of first piston (10) is fixed with the first body of rod (11) that inserts in first cylinder body (4) inner chamber, the one end that first piston (10) were kept away from in the first body of rod (11) is fixed in one side of second piston (13), one side of first cylinder body (4) has air duct (12) through the pipeline intercommunication, one side that first cylinder body (4) were kept away from in air duct (12) is linked together through pipeline and second cylinder body (5), the inner chamber of second cylinder body (5) is equipped with third piston (14), one side of third piston (14) is fixed with the second body of rod (15) that runs through second cylinder body (5), the one end that third piston (14) were kept away from in the second body of rod (15) is fixed in the top of baffle (6).

2. The sampling device for shale gas geological exploration according to claim 1, characterized in that: one side, far away from the third guide pipe (29), of the second cylinder (3) is communicated with a second guide pipe (19), and one side, far away from the second cylinder (3), of the second guide pipe (19) is inserted into the inner cavity of the third cylinder (23).

3. The sampling device for shale gas geological exploration according to claim 2, characterized in that: one side of the second cylinder (3) far away from the first conduit (18) is communicated with a third conduit (29), and one end of the third conduit (29) far away from the first cylinder (2) is communicated with the second cylinder (3).

4. The sampling device for shale gas geological exploration according to claim 3, wherein: the outside of baffle (6) is fixed with first sealed pad (27), the inner chamber bottom mounting of first barrel (2) has fixed block (7), recess (8) with baffle (6) looks adaptation are seted up on the top of fixed block (7).

5. The sampling device for shale gas geological exploration according to claim 4, wherein: one side of the fixing block (7) is provided with a through groove (9), two sides of the lower part of the baffle (6) are respectively fixed with a second limiting block (30), and one side of the second conduit (19) is provided with a second sealing gasket (28).

6. The sampling device for shale gas geological exploration according to claim 2, characterized in that: the inner cavity both sides wall of second barrel (3) all is fixed with first stopper (26), the outside of first pipe (18) is equipped with first valve body (20), one side of first pipe (18) is equipped with manometer (22), the outside of second pipe (19) is equipped with second valve body (21).

7. The sampling device for shale gas geological exploration according to claim 1, characterized in that: the bottom of second cylinder body (5) evenly is fixed with first bracing piece (16) that quantity is four, the one end that second cylinder body (5) were kept away from in first bracing piece (16) is fixed in one side of first barrel (2), one side that first bracing piece (16) were kept away from in first barrel (2) is fixed with quantity is two second bracing piece (17), one side that first barrel (2) were kept away from in second bracing piece (17) is fixed with base (25), the top of base (25) is fixed with second barrel (3), the top of base (25) is fixed with bottle (24).