CN109236351B

CN109236351B - Automatic water drainage device for coal seam gas extraction

Info

Publication number: CN109236351B
Application number: CN201811042934.6A
Authority: CN
Inventors: 白雪松; 高浩强; 唐治; 邓坤; 吕进国; 宫闻远; 刘喜军
Original assignee: Liaoning Technical University
Current assignee: Liaoning Technical University
Priority date: 2018-09-10
Filing date: 2018-09-10
Publication date: 2021-04-02
Anticipated expiration: 2038-09-10
Also published as: CN109236351A

Abstract

The invention discloses an automatic water drainage device for coal bed gas extraction, which comprises a barrel, wherein a movable sealing cabin door is arranged at the lower part of the front surface of the barrel, water inlet pipelines are symmetrically connected and arranged at two sides of the barrel, a drainage pipeline is connected and arranged at the lower part of the right side of the barrel, a slag collecting box is movably fitted and arranged at the bottom of the barrel, an exhaust hole is arranged in the middle of the upper end of the barrel in a penetrating manner, a gas outlet pipeline communicated with the exhaust hole is welded at the upper end of the barrel, a first sealing bearing is embedded at the top end of the inner side wall of the barrel, a filter screen is welded at the inner ring of the first sealing bearing, a second sealing bearing is embedded at the lower part of the inner wall of the barrel. The invention can realize the automatic separation of gas, liquid and solid, and can avoid blockage on the basis of ensuring the treatment effect, thereby being more convenient and practical.

Description

Automatic water drainage device for coal seam gas extraction

Technical Field

The invention relates to the field of gas extraction, in particular to an automatic water drainage device for coal seam gas extraction.

Background

The gas is formed by decomposing cellulose and organic matters under the action of anaerobic bacteria at the initial stage of stacking ancient plants into coal. In a high-temperature and high-pressure environment, gas is continuously generated due to physical and chemical actions while coal is formed. The gas is colorless and odorless, but the flavor similar to apple can be smelled sometimes, because the aromatic hydrocarbon gas and the gas are simultaneously gushed out. The gas exists in a free state and an adsorbed state in the coal body or the surrounding rock.

At present, the automatic water drainage device for coal seam gas extraction is very common in use, the product styles are various, the underground gas extraction processes of different enterprises are not completely the same, the pipeline arrangement modes are not nearly the same, but most of water drainage devices adopt an inner cylinder or a buoy structure, a complex valve is used, the structure can not always avoid the phenomena of valve and pipeline blockage, air leakage, water leakage, corrosion and the like, the installation is complex, the slag removal is difficult, and the use requirements can not be met.

Disclosure of Invention

The invention aims to provide an automatic water drainage device for coal bed gas extraction, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an automatic ware that drains of coal seam gas drainage, includes the barrel, the positive lower part of barrel is equipped with the sealed hatch door of activity, barrel bilateral symmetry connects and is provided with the inlet channel, barrel right side sub-unit connection is provided with drainage pipe, barrel bottom activity agrees with and has installed the collection sediment box, barrel upper end middle part is run through and is provided with the exhaust hole, barrel upper end welding be provided with the outlet duct of exhaust hole intercommunication, the top of barrel inside wall is inlayed and is provided with first sealed bearing, first sealed bearing inner circle welding is provided with the filter screen, the inlayed second sealed bearing that is provided with in barrel inner wall lower part, second sealed bearing inner circle welding is provided with the impeller, barrel lower extreme bilateral symmetry welding is provided with the.

As a further scheme of the invention: the inlet channel is located the barrel bilateral symmetry sets up, and every side all is equipped with two sets ofly, the inlet channel with barrel intercommunication and opening tilt up are 45.

As a further scheme of the invention: the drainage pipe left end with the inside intercommunication of barrel, the drainage pipe left end is inlayed through screw-thread fit activity and is had the metal filter screen.

As a further scheme of the invention: the filter screen is for leaking hopper-shaped metal filter screen, the lower surface welding of filter screen has the stainless steel thin slice that is Archimedes spiral form.

As a further aspect of the invention; the second sealed bearing is located between the water inlet pipeline and the water drainage pipeline.

As a further aspect of the invention; the impeller is a centrifugal impeller consisting of a plurality of groups of stainless steel thin blades which are inclined in sequence.

Compared with the prior art, the invention has the beneficial effects that: the pumped water enters the barrel through the water inlet pipeline, water and doped slag impurities are impacted downwards, the water flow drives the impeller to rotate relative to the barrel through the second sealing bearing, and therefore the water in the barrel can also generate a centrifugal rotation effect under the driving of the impeller, so that the impurities can be promoted to be accumulated on the slag collecting box under the action of centrifugal force, and the surface of a metal filter screen on the end face of the drainage pipeline can be cleaned through centrifugal rotation of the water, the attachment of the impurities on the metal filter screen on the end face of the drainage pipeline is reduced, the separation of the slag and the water can be realized, and the hidden danger of impurity blockage is reduced; meanwhile, gas filters through the filter screen and floats impurity etc. and passes through from the exhaust hole and discharge by the pipeline of giving vent to anger, such design can enough filter the showy impurity in the air current, can promote the stainless steel thin slice and drive the filter screen through first sealed bearing and barrel formation relative rotation again through high-speed air current, can produce centrifugal rotation like this, can throw away impurity, reduce the depending on of impurity on the filter screen surface, thereby realize gas, the separation between liquid and the solid, and can reduce the hidden danger of jam, and the treatment efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of an automatic water drainage device for coal bed gas extraction.

Fig. 2 is a schematic structural view of an impeller in an automatic water drainage device for coal bed gas extraction.

In the figure: 1-cylinder, 2-water inlet pipeline, 3-water discharge pipeline, 4-slag collecting box, 5-exhaust hole, 6-air outlet pipeline, 7-first sealing bearing, 8-filter screen, 9-second sealing bearing, 10-impeller and 11-bracket.

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. 1-2, in the embodiment of the invention, an automatic water drainage device for coal bed gas extraction comprises a cylinder 1, wherein a movable sealing cabin door (not shown) is arranged at the lower part of the front surface of the cylinder 1, the automatic water drainage device is commonly used for placing materials in a container and cleaning in the prior art, water inlet pipelines 2 are symmetrically connected to two sides of the cylinder 1, the water inlet pipelines 2 are symmetrically arranged at two sides of the cylinder 1, two sets of water inlet pipelines are arranged at each side, the water inlet pipelines 2 are communicated with the cylinder 1, the opening of the water inlet pipelines is inclined upwards by 45 degrees, a water drainage pipeline 3 is connected to the lower part of the right side of the cylinder 1, a water body enters the cylinder 1 through the water inlet pipelines 2 and is drained through the water drainage pipeline 3, the left end of the water drainage pipeline 3 is communicated with the inside of the cylinder 1, a metal filter screen is movably embedded at the left end, the slag collecting box 4 is movably arranged at the bottom of the barrel 1, crushed aggregates and impurities doped in a water body entering the barrel 1 through the water inlet pipeline 2 can be collected on the slag collecting box 4 in a centralized manner, the crushed aggregates and the impurities can be collected through the sealed cabin door on the front side of the barrel 1, the middle part of the upper end of the barrel 1 is provided with an exhaust hole 5 in a penetrating manner, the upper end of the barrel 1 is provided with an air outlet pipeline 6 communicated with the exhaust hole 5 in a welding manner, the top end of the inner side wall of the barrel 1 is embedded with a first sealing bearing 7, a filter screen 8 is welded in the inner ring of the first sealing bearing 7, the filter screen 8 is a funnel-shaped metal filter screen, a stainless steel sheet (not shown) in an Archimedes spiral shape is welded on the lower surface of the filter screen 8, the filter screen 8 is welded and fixed with the inner ring of the first sealing bearing 7, when the air flow passes through the filter screen 8 upwards, floating impurities in the air flow can be filtered, and the filter screen 8 can be driven to rotate relative to the cylinder 1 through the first sealing bearing 7 by pushing the stainless steel sheet through the high-speed air flow, so that centrifugal rotation can be generated, the impurities can be thrown away, the attachment of the impurities on the surface of the filter screen 8 is reduced, a second sealing bearing 9 is embedded at the lower part of the inner wall of the cylinder 1, the second sealing bearing 9 is positioned between the water inlet pipeline 2 and the water outlet pipeline 3, an impeller 10 is welded at the inner ring of the second sealing bearing 9, the impeller 10 is a centrifugal impeller formed by a plurality of groups of stainless steel thin blades which are inclined in sequence, when the water flow injected through the water inlet pipeline 2 passes through the impeller 10, the impeller 10 can be driven to rotate relative to the cylinder 1 through the second sealing bearing 9, thereby drive water centrifugation in the barrel 1 rotates, can enough promote impurity long-pending stay on the collection sediment box 4, it is right again to rotate through the water centrifugation the metal filter screen surface of 3 terminal surfaces of drainage pipe clears up to reduce impurity and be in depend on the metal filter screen of 3 terminal surfaces of drainage pipe, 1 lower extreme bilateral symmetry of barrel welds and is provided with support 11, through support 11 is right barrel 1 supports.

The working principle of the invention is as follows: the pumped water enters the barrel body 1 through the water inlet pipeline 2, the water and the doped slag impurities are impacted downwards, the water flow drives the impeller 10 to rotate relative to the barrel body 1 through the second sealing bearing 9, so that the water in the barrel body 1 can also generate a centrifugal rotation effect under the driving of the impeller 10, the impurities can be promoted to be accumulated on the slag collecting box 4 under the action of centrifugal force, the surface of a metal filter screen on the end surface of the drainage pipeline 3 can be cleaned through the centrifugal rotation of the water, the attachment of the impurities on the metal filter screen on the end surface of the drainage pipeline 3 is reduced, the separation of slag and water can be realized, and the hidden danger of impurity blockage is reduced; meanwhile, gas filters through filter screen 8 and floats impurity etc. and passes through from exhaust hole 5 and discharge by outlet duct 6, such design can enough filter the floating impurity in the air current, can promote the stainless steel thin slice through high velocity air flow again and drive filter screen 8 and form relative rotation through first sealed bearing 7 and barrel 1, can produce the centrifugation like this and rotate, can throw away impurity, reduce the depending on of impurity on filter screen 8 surface, thereby realize gas, the separation between liquid and the solid, and can reduce the hidden danger of jam, and the treatment efficiency is improved.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An automatic water drainage device for coal bed gas extraction comprises a barrel (1) and is characterized in that a movable sealing cabin door is arranged on the lower front portion of the barrel (1), water inlet pipelines (2) are symmetrically connected to two sides of the barrel (1), a drainage pipeline (3) is connected to the lower portion of the right side of the barrel (1), a slag collecting box (4) is movably arranged at the bottom of the barrel (1), an exhaust hole (5) penetrates through the middle of the upper end of the barrel (1), a gas outlet pipeline (6) communicated with the exhaust hole (5) is welded to the upper end of the barrel (1), a first sealing bearing (7) is embedded in the top end of the inner side wall of the barrel (1), a filter screen (8) is welded to the inner ring of the first sealing bearing (7), and a second sealing bearing (9) is embedded to the lower portion of the inner wall of, an impeller (10) is welded on the inner ring of the second sealing bearing (9), and brackets (11) are symmetrically welded on two sides of the lower end of the cylinder body (1);

the water inlet pipelines (2) are symmetrically arranged at two sides of the barrel body (1), and two groups of water inlet pipelines are arranged at each side;

the water inlet pipeline (2) is communicated with the cylinder body (1), and the opening of the water inlet pipeline is inclined upwards by 45 degrees;

the left end of the drainage pipeline (3) is communicated with the interior of the cylinder body (1);

a metal filter screen is movably embedded at the left end of the drainage pipeline (3) through thread matching;

the filter screen (8) is a funnel-shaped metal filter screen; the lower surface of the filter screen (8) is welded with an Archimedes spiral stainless steel sheet; the second sealing bearing (9) is positioned between the water inlet pipeline (2) and the water drainage pipeline (3);

the impeller (10) is a centrifugal impeller consisting of a plurality of groups of stainless steel thin blades which are inclined in sequence;

when the automatic water drainage device for coal bed gas extraction works, extracted water enters the cylinder body (1) through the water inlet pipeline (2), water and doped slag impurities are impacted downwards, water flow drives the impeller (10) to rotate relative to the cylinder body (1) through the second sealing bearing (9), and therefore a water body in the cylinder body (1) can also generate a centrifugal rotation effect under the driving of the impeller (10), so that the impurities can be promoted to be accumulated on the slag collecting box (4) under the action of centrifugal force, and the surface of a metal filter screen on the end face of the drainage pipeline (3) can be cleaned through centrifugal rotation of the water body, so that the attachment of the impurities on the metal filter screen on the end face of the drainage pipeline (3) is reduced, the separation of slag and water can be realized, and the potential hazard of impurity blockage is reduced; meanwhile, gas filters through filter screen (8) and floats impurity and passes through from exhaust hole (5) and discharge by outlet duct (6), such design can enough filter the floating impurity in the air current, again can promote the stainless steel thin slice through high-speed air current and drive filter screen (8) and form relative rotation through first sealed bearing (7) and barrel (1), can produce the centrifugation like this and rotate, can throw away impurity, reduce the attachment of impurity on filter screen (8) surface, thereby realize gas, separation between liquid and the solid, and can reduce the hidden danger of jam, and the treatment efficiency is improved.