CN218718811U

CN218718811U - Coal gas fast-cutting valve

Info

Publication number: CN218718811U
Application number: CN202222861592.9U
Authority: CN
Inventors: 周智林; 周林业
Original assignee: Shanghai Zhonghu Valve Group Intelligent Equipment Co ltd
Current assignee: Shanghai Zhonghu Valve Group Intelligent Equipment Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-24
Anticipated expiration: 2032-10-28

Abstract

The application relates to a coal gas fast-cutting valve, and relates to the technical field of valves. The quick-cutting valve comprises a quick-cutting valve body, a first flange, a second flange and a telescopic rod, wherein a cylinder is arranged at the top of the quick-cutting valve body, a piston rod of the cylinder extends into the quick-cutting valve body and is in sliding connection with the top wall of the quick-cutting valve body; the first flange is arranged at the bottom of the quick-cutting valve body, the second flange is arranged on the side wall of the quick-cutting valve body, the first flange center hole, the inner cavity of the quick-cutting valve body and the second flange center hole are sequentially communicated, a convex ring is arranged at one end of the first flange, which extends into the quick-cutting valve body, and a sealing ring is arranged on the convex ring; the telescopic link with the coaxial rigid coupling of cylinder piston rod, the telescopic link is kept away from cylinder one end is provided with the valve plate that is used for the shutoff sealing washer, the telescopic link is used for promoting the valve plate with the sealing washer butt. This application has the effect of being convenient for cut off the coal gas in the pipeline.

Description

Gas fast-cutting valve

Technical Field

The application relates to the technical field of valves, in particular to a coal gas quick-cutting valve.

Background

Valves are mechanical devices that control the flow, direction, pressure, temperature, etc. of a flowing fluid medium, and are essential components of a piping system. In combustible gas pipelines for gas, natural gas and liquefied petroleum, a quick-cut valve is generally used to cut off or connect a fluid in the pipeline.

Patent document 201821532249.7 discloses a coal gas fast-cutting valve structure, including fast-cutting valve body, fast-cutting valve body inside is provided with two sets of baffles, and is two sets of the baffle is connected with first sealing washer to the crooked extension in fast-cutting valve body center, fast-cutting valve body upper portion installs the support, the activity of support bottom plate center department is provided with the valve rod, the valve rod runs through the support and extends into fast-cutting valve this internally and be provided with the valve plate, the support upper end is provided with the cylinder through the cylinder mounting panel, the piston rod of cylinder runs through the support and connects in the upper end of valve rod.

In view of the above-mentioned related technologies, the inventor believes that after the gas valve is used for a long period of time, due to the fact that the cylinder is not tightly sealed or the telescopic rod is worn, the extending length of the telescopic rod of the cylinder is reduced, a gap is easily formed between the valve plate and the first sealing ring, and the gas in a pipeline is not conveniently cut off.

SUMMERY OF THE UTILITY MODEL

To this end, the embodiment of the present application provides a gas quick-cutting valve,

in order to solve the above purpose, the following technical scheme is adopted:

the embodiment of the application provides a coal gas quick-cutting valve, which comprises a quick-cutting valve body, a first flange, a second flange and a telescopic rod, wherein a cylinder is arranged at the top of the quick-cutting valve body, a piston rod of the cylinder extends into the quick-cutting valve body and is in sliding connection with the top wall of the quick-cutting valve body;

the first flange is arranged at the bottom of the quick-cutting valve body, the second flange is arranged on the side wall of the quick-cutting valve body, a first flange center hole, an inner cavity of the quick-cutting valve body and a second flange center hole are sequentially communicated, a convex ring is arranged at one end of the first flange extending into the quick-cutting valve body, and a sealing ring is arranged on the convex ring;

the telescopic link with the coaxial rigid coupling of cylinder piston rod, the telescopic link is kept away from cylinder one end is provided with the valve plate that is used for the shutoff sealing washer, the telescopic link is used for promoting the valve plate with the sealing washer butt.

By adopting the technical scheme, the quick-cutting valve is arranged in a gas pipeline through the first flange and the second flange, under the normal condition, the piston rod of the cylinder retracts, the valve plate is separated from the sealing ring, gas enters the inner cavity of the quick-cutting valve body from the central hole of the first flange and is discharged out of the inner cavity of the quick-cutting valve body through the central hole of the second flange; when gas needs to be cut off, the cylinder piston rod extends out to drive the telescopic rod to move, the telescopic rod drives the valve plate to be close to the sealing ring, when the cylinder piston rod stops moving, the valve plate is matched with the sealing ring to plug the sealing ring, and the telescopic rod pushes the valve plate to be abutted against the sealing ring, so that the gas is prevented from entering the inner cavity of the quick-cutting valve body from the central hole of the first flange; the coal gas fast-cutting valve of design promotes valve plate and sealing washer butt through the telescopic link, uses longer a period back when the cylinder, because the telescopic link has certain pretension effect, has compensatied the defect that cylinder piston rod length reduces, has avoided appearing the clearance between valve plate and the sealing washer, is convenient for cut off the coal gas in the pipeline.

Optionally, the telescopic rod includes a fixed section, a sliding section and a compression spring, the sliding section is slidably connected with the fixed section, the fixed section is coaxially sleeved on the sliding section, one end of the sliding section, which is far away from the fixed section, is fixedly connected with the valve plate, and one end of the fixed section, which is far away from the sliding section, is fixedly connected with the cylinder piston rod; the compression spring pushes the sliding section to move away from the cylinder piston rod.

Through adopting above-mentioned technical scheme, the telescopic link of design promotes the slip section through compression spring and slides along the canned paragraph, and the slip section drives the valve plate motion, and the valve plate of being convenient for carries out the butt with the sealing washer.

Optionally, the sliding section is far away from valve plate one end is provided with the flaring boss, the fixed section is far away from cylinder one end is provided with and is used for the binding off retaining ring of flaring boss butt.

Through adopting above-mentioned technical scheme, the flaring boss and the binding off retaining ring of design, when flaring boss and binding off retaining ring butt, are convenient for prevent that sliding section and canned paragraph from breaking away from, have improved the practicality of telescopic link.

Optionally, an annular groove is formed in the surface of the sealing ring, and an annular groove boss used for being embedded into the annular groove is arranged on one side, far away from the cylinder, of the valve plate.

Through adopting above-mentioned technical scheme, annular bulge and the ring channel of design, when valve plate and sealing washer butt, annular bulge and ring channel gomphosis have improved the sealing performance of valve plate.

Optionally, a support is arranged at the top of the quick-cutting valve body, the air cylinder is arranged on the top wall of the support, and an air cylinder piston rod penetrates through the top wall of the support and is in sliding connection with the top wall of the support.

Through adopting above-mentioned technical scheme, the support of design fixes the cylinder on the support, is convenient for improve the stability of cylinder.

Optionally, the cylinder piston rod is slidably connected with a guide pipe, the guide pipe is coaxially sleeved on the cylinder piston rod, and the guide pipe extends into the fast-cutting valve body and is fixedly connected with the top wall of the fast-cutting valve body.

Through adopting above-mentioned technical scheme, the stand pipe of design, the cylinder piston rod of being convenient for lead along the stand pipe axis motion, has improved the stability performance in the cylinder piston rod motion process.

Optionally, a sealing ring is arranged at the top end of the guide pipe, the sealing ring is coaxially sleeved on the cylinder piston rod, and the inner wall of the sealing ring is in contact with the circumferential wall of the cylinder piston rod.

By adopting the technical scheme, the designed sealing ring is convenient for sealing the gap between the guide pipe and the cylinder piston rod, thereby reducing the leakage of coal gas and improving the safety performance of the quick-cutting valve.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the beneficial effects that at least:

1. according to the designed gas quick-cutting valve, the valve plate is pushed to abut against the sealing ring through the telescopic rod, and after the cylinder is used for a long period of time, the telescopic rod has a certain pre-tightening effect, so that the defect that the length of a piston rod of the cylinder is reduced is overcome, a gap between the valve plate and the sealing ring is avoided, and the gas in a pipeline is conveniently cut off;

2. the designed gas quick-cutting valve is convenient for preventing the sliding section from being separated from the fixed section through the abutting of the flaring boss and the closing-up retainer ring, and improves the practicability of the telescopic rod;

3. the designed gas quick-cutting valve has the advantages that when the valve plate is abutted to the sealing ring, the annular protrusion is embedded with the annular groove, and the sealing performance of the valve plate is improved.

Drawings

Fig. 1 is a schematic structural view of a gas quick-cutting valve according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a gas quick-cut valve according to an embodiment of the present application;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an enlarged view of a portion B in fig. 2.

Description of the reference numerals:

1. a quick-cut valve body; 11. a support; 12. a guide tube; 13. a seal ring; 2. a cylinder; 3. a telescopic rod; 31. a fixed section; 311. a closing-up retainer ring; 32. a sliding section; 321. flaring bosses; 33. a compression spring; 4. a valve plate; 41. an annular projection; 5. a first flange; 6. a second flange; 7. a convex ring; 8. a seal ring; 81. an annular groove.

Detailed Description

The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.

In addition, the term "and/or" in the present application is only one kind of association relationship describing the associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the present application, the character "/" indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

In this application, the terms "first," "second," and the like are used for distinguishing identical or similar items with substantially identical functions and functionalities, and it should be understood that "first," "second," and "n" have no logical or temporal dependency, and no limitation on the number or execution order.

The term "at least one" in this application means one or more, and the meaning of "a plurality" means three or more, e.g. a plurality of first locations means three or more first locations.

The embodiments of the present application will be described in further detail with reference to the drawings attached hereto.

The embodiment discloses a gas quick-cutting valve.

Referring to fig. 1 and 2, a coal gas fast-cutting valve comprises a fast-cutting valve body 1, a cylinder 2, an expansion link 3, a valve plate 4, a first flange 5, a second flange 6, a convex ring 7 and a sealing ring 8, wherein the fast-cutting valve body 1 is arranged in a cuboid shape in the embodiment, the cylinder 2 is arranged at the top of the fast-cutting valve body 1, a piston rod of the cylinder 2 extends into the fast-cutting valve body 1 and is in sliding connection with the top wall of the fast-cutting valve body 1, a piston rod of the cylinder 2 is vertically arranged, the first flange 5 is welded at the bottom of the fast-cutting valve body 1, the axis of the first flange 5 is perpendicular to the bottom wall of the fast-cutting valve body 1, the second flange 6 is integrally connected to the side wall of the fast-cutting valve body 1, the axis of the second flange 6 is perpendicular to the side wall of the fast-cutting valve body 1, and the center holes of the first flange 5, the inner cavity of the fast-cutting valve body 1 and the second flange 6 are sequentially communicated; first flange 5 stretches into 1 inside one end of fast valve body of cutting in bulge loop 7 body coupling, bulge loop 7 and the coaxial setting of first flange 5, bulge loop 7 is established with the coaxial cover of sealing washer 8, telescopic link 3 and 2 piston rod coaxial weld of cylinder, 2 one end and 4 threaded connection of valve plate are kept away from to telescopic link 3, valve plate 4 and the coaxial setting of telescopic link 3, valve plate 4 is used for shutoff sealing washer 8, sealing washer 8 and the coaxial setting of valve plate 4, telescopic link 3 is used for promoting valve plate 4 and 8 butts of sealing washer.

The quick-cutting valve is installed in a gas pipeline through the first flange 5 and the second flange 6, so that gas enters the inner cavity of the quick-cutting valve body 1 from the central hole of the first flange 5 and is discharged out of the inner cavity of the quick-cutting valve body 1 through the central hole of the second flange 6, under the normal condition, the piston rod of the cylinder 2 retracts, and the valve plate 4 is separated from the sealing ring 8; when gas needs to be cut off, a piston rod of the air cylinder 2 extends out to drive the telescopic rod 3 to move, the telescopic rod 3 drives the valve plate 4 to move close to the sealing ring 8, when the piston rod of the air cylinder 2 stops moving, the valve plate 4 is matched with the sealing ring 8 to block the sealing ring 8, and the telescopic rod 3 pushes the valve plate 4 to abut against the sealing ring 8, so that the gas is prevented from entering an inner cavity of the quick-cutting valve body 1 from a central hole of the first flange 5; after the cylinder 2 is used for a long period of time, the telescopic rod 3 has a certain pre-tightening effect, so that the defect that the length of a piston rod of the cylinder 2 is reduced is overcome, a gap is prevented from occurring between the valve plate 4 and the sealing ring 8, and the coal gas in a pipeline can be cut off conveniently.

Referring to fig. 2 and 3, the telescopic rod 3 includes a fixed section 31, a sliding section 32 and a compression spring 33, the sliding section 32 is slidably connected with the fixed section 31, the sliding direction is parallel to the axial direction of the fixed section 31, the fixed section 31 is coaxially sleeved on the sliding section 32, one end of the sliding section 32, far away from the fixed section 31, is in threaded connection with the valve plate 4, the sliding section 32 is coaxially arranged with the valve plate 4, and one end of the fixed section 31, far away from the sliding section 32, is welded with the piston rod of the cylinder 2; in order to prevent the sliding section 32 from being separated from the fixed section 31, one end of the sliding section 32, which is far away from the valve plate 4, is integrally connected with a flaring boss 321, the flaring boss 321 is positioned in the inner cavity of the fixed section 31, and one end of the fixed section 31, which is far away from the cylinder 2, is integrally connected with a closing-up retainer ring 311 used for abutting against the flaring boss 321; compression spring 33 promotes the slip section 32 and keeps away from the motion of cylinder 2 piston rod, and compression spring 33 is located the 31 inner chambers of canned paragraph in this embodiment, and compression spring 33 can also overlap in this application and establish on slip section 32, but all realize promoting slip section 32 along keeping away from the motion of cylinder 2 piston rod can, compression spring 33 one end and the inner wall butt on canned paragraph 31 top in this embodiment, the other end and flaring boss 321 roof butt.

Referring to fig. 2 and 3, a bracket 11 is welded on the top of the quick-cutting valve body 1, the cylinder 2 is mounted on the top wall of the bracket 11 in a bolt connection manner, and a piston rod of the cylinder 2 penetrates through the top wall of the bracket 11 and is in sliding connection with the top wall of the bracket 11; in order to guide the motion of the piston rod of the air cylinder 2, the piston rod of the air cylinder 2 is slidably connected with a guide pipe 12 in the embodiment, the guide pipe 12 is coaxially sleeved on the piston rod of the air cylinder 2, the guide pipe 12 extends into the quick-cutting valve body 1 and is integrally connected with the top wall of the quick-cutting valve body 1, and the top end of the guide pipe 12 is flush with the top wall of the quick-cutting valve body 1; in order to facilitate sealing of a gap between the guide pipe 12 and the piston rod of the cylinder 2, in the embodiment, a sealing ring 13 is bonded at the top end of the guide pipe 12, the sealing ring 13 is coaxially sleeved on the piston rod of the cylinder 2, and the inner wall of the sealing ring 13 is in contact with the peripheral wall of the piston rod of the cylinder 2; in order to facilitate the installation of 1 internals of fast cutting valve body, can seted up the installing port at 1 roof of fast cutting valve body, carry out the shutoff through the welded mode to the installing port after spare part installation.

Referring to fig. 2 and 4, in order to improve the sealing performance between the valve plate 4 and the sealing ring 8, in this embodiment, an annular groove 81 is formed in the surface of the sealing ring 8, the annular groove 81 is coaxial with the sealing ring 8, and an annular protrusion 41 for fitting the annular groove 81 is integrally connected to a side of the valve plate 4 away from the cylinder 2.

The implementation principle of a coal gas fast-cutting valve of the embodiment of the application is as follows:

when the quick-cutting valve is used, the quick-cutting valve is arranged in a gas pipeline through the first flange 5 and the second flange 6, so that gas enters the inner cavity of the quick-cutting valve body 1 from the central hole of the first flange 5 and is discharged out of the inner cavity of the quick-cutting valve body 1 through the central hole of the second flange 6, under normal conditions, the piston rod of the cylinder 2 retracts, and the valve plate 4 is separated from the sealing ring 8; when gas needs to be cut off, a piston rod of the air cylinder 2 extends out, under the action of the guide pipe 12, the telescopic rod 3 is driven to move along the axis direction of the guide pipe 12, the telescopic rod 3 drives the valve plate 4 to move close to the sealing ring 8, when the piston rod of the air cylinder 2 stops moving, the compression spring 33 pushes the sliding section 32 to move close to the sealing ring 8, so that the valve plate 4 is abutted against the sealing ring 8, the annular protrusion 41 is embedded in the annular groove 81 to plug the sealing ring 8, and the gas is prevented from entering the inner cavity of the quick-cutting valve body 1 from the central hole of the first flange 5; after the cylinder 2 is used for a long time, the compression spring 33 has a certain pre-tightening effect, so that the defect that the length of the piston rod of the cylinder 2 is reduced is overcome, a gap between the valve plate 4 and the sealing ring 8 is avoided, and the coal gas in a pipeline is conveniently cut off.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a coal gas fast cutting valve, includes fast cutting valve body (1), fast cutting valve body (1) top is provided with cylinder (2), cylinder (2) piston rod stretches into fast cutting valve body (1) inside and with fast cutting valve body (1) roof sliding connection, its characterized in that: the device also comprises a first flange (5), a second flange (6) and a telescopic rod (3);

the first flange (5) is arranged at the bottom of the quick-cutting valve body (1), the second flange (6) is arranged on the side wall of the quick-cutting valve body (1), a center hole of the first flange (5), an inner cavity of the quick-cutting valve body (1) and a center hole of the second flange (6) are sequentially communicated, a convex ring (7) is arranged at one end, extending into the quick-cutting valve body (1), of the first flange (5), and a sealing ring (8) is arranged on the convex ring (7);

telescopic link (3) with the coaxial rigid coupling of cylinder (2) piston rod, keep away from telescopic link (3) cylinder (2) one end is provided with valve plate (4) that are used for shutoff sealing washer (8), telescopic link (3) are used for promoting valve plate (4) with sealing washer (8) butt.

2. The gas quick-cut valve as claimed in claim 1, wherein: the telescopic rod (3) comprises a fixed section (31), a sliding section (32) and a compression spring (33), the sliding section (32) is in sliding connection with the fixed section (31), the fixed section (31) is coaxially sleeved on the sliding section (32), one end, far away from the fixed section (31), of the sliding section (32) is fixedly connected with the valve plate (4), and one end, far away from the sliding section (32), of the fixed section (31) is fixedly connected with a piston rod of the cylinder (2); the compression spring (33) pushes the sliding section (32) to move away from the piston rod of the air cylinder (2).

3. The gas quick-cutting valve according to claim 2, characterized in that: sliding section (32) are kept away from valve plate (4) one end is provided with flaring boss (321), fixed section (31) are kept away from cylinder (2) one end is provided with and is used for binding off retaining ring (311) of flaring boss (321) butt.

4. The gas quick-cutting valve according to claim 1, characterized in that: annular groove (81) have been seted up on sealing washer (8) surface, valve plate (4) are kept away from cylinder (2) one side is provided with and is used for the gomphosis annular protrusion (41) of annular groove (81).

5. The gas quick-cut valve as claimed in claim 1, wherein: the quick-cutting valve is characterized in that a support (11) is arranged at the top of the quick-cutting valve body (1), the air cylinder (2) is arranged on the top wall of the support (11), and a piston rod of the air cylinder (2) penetrates through the top wall of the support (11) and is in sliding connection with the top wall of the support (11).

6. The gas quick-cutting valve according to claim 1, characterized in that: cylinder (2) piston rod sliding connection has stand pipe (12), stand pipe (12) coaxial cover is located cylinder (2) piston rod, stand pipe (12) stretch into cut valve body (1) inside fast and with cut valve body (1) roof rigid coupling soon.

7. The gas quick-cutting valve according to claim 6, characterized in that: the top end of the guide pipe (12) is provided with a sealing ring (13), the sealing ring (13) is coaxially sleeved on the piston rod of the cylinder (2), and the inner wall of the sealing ring (13) is in contact with the peripheral wall of the piston rod of the cylinder (2).