CN218152525U - Corrugated pipe stop valve with high-pressure self-locking function - Google Patents

Abstract

The application discloses bellows stop valve with high pressure self-locking function belongs to stop valve technical field. The valve mainly comprises a valve body, wherein a threaded hole is formed in the valve body, the upper end of the valve body is arranged to be aligned with a valve cover sealed by the valve body, a bolt for fastening the valve body and the valve cover is arranged, a notch is formed in the bolt and is arranged in a valve cavity in the valve body, the valve cavity is used for transmitting media and is arranged in a second cavity in the valve body, the second cavity is communicated with the threaded hole and is fixed on a second spring on the inner wall of the second cavity, an arc block is fixed on the second spring, an arc surface is arranged on the arc block, the arc surface is matched with the notch, and the second cavity is matched with the valve cavity. The utility model provides a bellows stop valve with high pressure self-locking function is through being equipped with breach and cambered surface for under the high-pressure state, the cambered surface is to the chucking state of breach, thereby can't dismantle the bolt through the instrument, has realized the self-locking function under the high-pressure state, has guaranteed maintenance personal's safety.

Description

Corrugated pipe stop valve with high-pressure self-locking function

Technical Field

The application relates to the technical field of stop valves, in particular to a corrugated pipe stop valve with a high-pressure self-locking function.

Background

The bellows stop valve is also called as a bellows sealing stop valve, the inside of the bellows stop valve adopts a bellows structure, the lower end of the bellows is welded on the valve rod to prevent the process fluid from corroding the valve rod, the other end of the bellows is arranged between the valve body and the valve cover to form a static seal, and the bellows stop valve is most suitable for pipelines of media such as steam, inflammable, explosive, heat conducting oil, high-purity, toxic and the like.

However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventor of the present application finds that the above technology has at least the following technical problems: when the corrugated pipe stop valve is used, the corrugated pipe fails and needs to be replaced, and when the corrugated pipe stop valve is maintained and replaced, if the pressure in the corrugated pipe stop valve is very high, the corrugated pipe stop valve is very dangerous when the valve cover is opened for replacement, so that the corrugated pipe stop valve with a high-pressure self-locking function is necessary to be provided for solving the problems.

It is noted that the above information disclosed in this background section is only for background purposes in understanding the inventive concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems in the prior art, the embodiments of the present application are directed to: the corrugated pipe stop valve with the high-pressure self-locking function achieves the self-locking function when the pressure in the corrugated pipe stop valve is high, and prevents maintenance personnel from being injured due to overhigh pressure in the maintenance process.

The technical scheme adopted by the application for solving the technical problem is as follows: bellows stop valve with high-pressure self-locking function, including the valve body, be equipped with the screw hole on the valve body, locate the valve body upper end, it is right to be used for the sealed valve gap of valve body, be used for the fastening the bolt of valve body and valve gap, be equipped with the breach on the bolt, locate valve pocket in the valve body, the valve pocket is used for transmission medium, locates the inside second cavity of valve body, and with the screw hole intercommunication is fixed in second cavity inner wall second spring is fixed in arc piece on the second spring, be equipped with the cambered surface on the arc piece, the cambered surface with the breach phase-match, the second cavity with the valve pocket.

The beneficial effect of this application is: the application provides a bellows stop valve with high pressure self-locking function through being equipped with breach and cambered surface for under the high-pressure state, the cambered surface is to the chucking state of breach, thereby can't dismantle the bolt through the instrument, has realized the self-locking function under the high-pressure state, has guaranteed maintenance personal's safety.

Drawings

The present application is further described below with reference to the accompanying drawings and examples.

In the figure:

FIG. 1 is a general schematic view of a bellows shut-off valve with a high pressure self-locking function according to the present application;

FIG. 2 is an exploded view of the valve body portion of FIG. 1;

FIG. 3 is a schematic view of a portion A of FIG. 2;

FIG. 4 is a schematic view of a portion of the structure shown at B in FIG. 3;

FIG. 5 is a schematic view of the relationship between the arc block and the bolt of FIG. 4;

wherein, in the figures, the respective reference numerals:

1. a valve body; 2. a valve cover; 3. a bolt; 4. an end plate; 5. an end face; 6. a valve cavity; 7. a first chamber; 8. a piston; 9. a first spring; 10. a pipeline; 11. a second chamber; 12. a second spring; 13. an arc block; 14. a cambered surface; 15. a notch; 16. a gasket; 17. a threaded bore.

Detailed Description

The present application will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and only illustrates the basic structure of the present application in a schematic manner, and therefore it only shows the structure related to the present application.

As shown in fig. 1, the application provides a bellows stop valve with a high-pressure self-locking function, which comprises a valve body 1 and a valve cover 2 matched and sealed with the valve body 1, wherein a plurality of groups of bolts 3 penetrate through the valve cover 2, the bolts 3 are in threaded connection with the valve body 1, and the valve body 1 and the valve cover 2 are locked together and sealed through the bolts 3;

as shown in fig. 2 and 4, the valve body 1 is a split structure, the middle of the upper end of the valve body 1 is provided with an end face 5, the upper end of the end face 5 is fixedly provided with an end plate 4, a sealing gasket 16 is arranged between the end face 5 and the end plate 4, the end plate 4 and the sealing gasket 16 are provided with through holes for the bolts 3 to pass through, and the end face 5 is provided with threaded holes 17 fixed with the bolts 3;

as shown in fig. 3 and 4, a valve cavity 6 is arranged in the middle of the valve body 1, the valve cavity 6 penetrates through the end face 5, the sealing gasket 16 and the end plate 4, the valve cavity 6 is used for transferring a medium, a first cavity 7, a second cavity 11 and a pipeline 10 are respectively arranged at the upper end of the end face 5 and the lower end of the end plate 4, the first cavity 7 is perpendicular to the valve cavity 6, the pipeline 10 is perpendicular to the first cavity 7, the pipeline 10 is used for communicating the first cavity 7 with the second cavity 11, and meanwhile, an avoiding groove is formed in the sealing gasket 16, so that when the end face 5 and the end plate 4 are installed, the first cavity 7, the second cavity 11 and the pipeline 10 can be formed completely;

a first spring 9 is fixed in the first chamber 7, a piston 8 is fixed at the other end of the first spring 9, the piston 8 can slide and seal in the first chamber 7, and when the pressure in the valve cavity 6 is normal, the piston 8 is also positioned in the first chamber 7, and meanwhile, the piston 8 can be positioned in different positions of the first chamber 7 due to different pressures in the valve cavity 6;

a second spring 12 is fixed in the second chamber 11, an arc block 13 is fixed at the other end of the second spring 12, the arc block 13 and the second chamber 11 slide and are sealed, the second chamber 11 penetrates through the threaded hole 17, meanwhile, when the pressure of the arc block 13 in the valve chamber 6 is normal, the arc block is positioned in the second chamber 11 and cannot extend into the threaded hole 17, and hydraulic oil is filled in the inner side of the first chamber 7, the pipeline 10 and the right side of the second chamber 11;

the front end of the arc block 13 is provided with an arc surface 14, the lower end of the bolt 3 is provided with a notch 15, and the width of the notch 15 is slightly larger than the height of the arc surface 14, so that the arc surface 14 can be clamped into the notch 15.

The working principle is as follows:

when the device is installed, the first spring 9 is firstly fixed on the inner wall of the first chamber 7 on the end surface 5, then the piston 8 is fixed at the other end of the first spring 9, and the sliding condition of the piston 8 in the first chamber 7 is tested;

secondly, fixing a second spring 12 in the second chamber 11, fixing an arc block 13 at the other end of the second spring 12, and testing the sliding condition of the arc block 13 in the second chamber 11;

then, the sealing gasket 16 and the end plate 4 are sequentially installed, thereby completing the installation of the valve body 1;

finally, the valve cover 2 is installed on the valve body 1 through the bolt 3, and other conventional parts of the corrugated pipe stop valve are installed according to a conventional method, so that the integral installation of the corrugated pipe stop valve is completed;

when the valve cover 2 needs to be disassembled and maintained, the bolt 3 needs to be unscrewed, at this time, if the pressure in the valve cavity 6 is too high, the too high pressure can push the piston 8 to move inwards, so that hydraulic oil in the first cavity 7 is extruded, the hydraulic oil enters the second cavity 11 through the pipeline 10, and the arc block 13 is pushed to move outwards, when the arc block 13 moves outwards, the arc surface 14 is in contact with the notch 15, so that the bolt 3 is clamped, at this time, the bolt 3 cannot be disassembled through a tool from the outside, so that the high-pressure self-locking function is realized, until the pressure in the valve cavity 6 is recovered to be normal, the arc block 13 is recovered to the original position under the action of the second spring 12, the clamping of the bolt 3 cannot be released, and the bolt 3 can be disassembled through the tool;

as a preferred embodiment, the second chamber 11 can be directly communicated with the valve chamber 6, so that the pressure inside the valve chamber 6 changes and directly acts on the arc block 13, and the high-pressure self-locking function can also be realized, although the embodiment is simpler and has lower processing difficulty, various corrosive gases can directly act on the arc block 13, so that the service life of the arc block 13 can be shortened, and a method of using the piston 8 and a hydraulic transmission mode to control the arc block 13 can add a layer of protection to the arc block 13, so that the service life of the arc block 13 is prolonged, and even in a state that the piston 8 fails, the bellows stop valve can still realize the high-pressure self-locking function.

In light of the foregoing description of preferred embodiments according to the present application, many modifications and variations can be made by a person skilled in the art without departing from the scope of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (4)

1. Bellows stop valve with high pressure self-locking function, its characterized in that: the method comprises the following steps:

the valve comprises a valve body (1), wherein a threaded hole (17) is formed in the valve body (1);

the valve cover (2) is arranged at the upper end of the valve body (1) and used for sealing the valve body (1);

the bolt (3) is used for fastening the valve body (1) and the valve cover (2), and a notch (15) is formed in the bolt (3);

the valve cavity (6) is arranged in the valve body (1), and the valve cavity (6) is used for transmitting media;

the second chamber (11) is arranged inside the valve body (1) and is communicated with the threaded hole (17);

the second spring (12) is fixed on the inner wall of the second chamber (11);

the arc block (13) is fixed on the second spring (12), and an arc surface (14) is arranged on the arc block (13);

the cambered surface (14) is matched with the notch (15).

2. The bellows stop valve with high-pressure self-locking function of claim 1, characterized in that: the valve is characterized in that a first cavity (7) and a pipeline (10) are arranged in the valve body (1), the first cavity (7) is communicated with the valve cavity (6), the pipeline (10) is used for communicating the first cavity (7) with the second cavity (11), a first spring (9) is fixed in the first cavity (7), and a piston (8) is fixed to the other end of the first spring (9).

3. The bellows stop valve with high pressure auto-lock function of claim 1, characterized in that: the second chamber (11) is in communication with the valve chamber (6).

4. The bellows stop valve with high-pressure self-locking function according to claim 2 or 3, characterized in that: the middle of valve body (1) is the components of a whole that can function independently structure, the middle of valve body (1) including set up terminal surface (5) in the bottom, and with end plate (4) of terminal surface (5) cooperation installation, terminal surface (5) with be equipped with sealed pad (16) between end plate (4).

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