CN214662352U

CN214662352U - High-transmission-ratio manual opening and closing device of large nuclear power stop valve

Info

Publication number: CN214662352U
Application number: CN202022344762.7U
Authority: CN
Inventors: 曲强
Original assignee: Suzhou Ruidun Machinery Co ltd
Current assignee: Suzhou Ruidun Machinery Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-11-09
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a manual device that opens and shuts of high drive ratio of large-scale nuclear power stop valve relates to stop valve technical field, and manual speed of opening and shutting when using is slow, the problem of inconvenient operation for solving current large-scale nuclear power stop valve. The stop valve body is characterized in that a second sealing connecting flange is installed at the upper end of the stop valve body, a first sealing connecting flange is installed above the second sealing connecting flange, a manual opening and closing device seat is installed inside the first sealing connecting flange, a closing seat is installed at the middle position above the manual opening and closing device seat, a closing conical clamping groove is formed in the closing seat, a limiting conical groove is formed in one side of the closing conical clamping groove, and a piston opening and closing rod is installed at the middle position inside the closing seat.

Description

High-transmission-ratio manual opening and closing device of large nuclear power stop valve

Technical Field

The utility model relates to a stop valve technical field specifically is manual device that opens and shuts of high drive ratio of large-scale nuclear power stop valve.

Background

The stop valve is also called as a stop valve and belongs to a forced sealing type valve, so that when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak; when a medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, and the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod bending can occur; the connection mode is divided into three types: flange connection, screw thread connection and welding connection; after the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced; at the same time, this type of valve is also relatively tight under the action of the medium.

However, when the existing large nuclear power stop valve is used, the manual opening and closing speed is slow, and the operation is inconvenient; therefore, the high-transmission-ratio manual starting and closing device of the large nuclear power stop valve is not met with the existing requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a manual device that opens and shuts of high drive ratio of large-scale nuclear power stop valve to it is slow, the problem of inconvenient operation to manually open and close when using to solve the current large-scale nuclear power stop valve that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the high-transmission-ratio manual starting and closing device of the large nuclear power stop valve comprises a stop valve body, wherein the upper end of the stop valve body is provided with a second sealing connecting flange, a first sealing connecting flange is arranged above the second sealing connecting flange, a manual opening and closing device seat is arranged inside the upper part of the first sealing connecting flange, the middle position above the manual starting and closing device seat is provided with a starting and closing seat, the interior of the starting and closing seat is provided with a starting and closing tapered clamping groove, one side of the starting and closing conical clamping groove is provided with a limiting conical groove, a piston starting and closing rod is arranged in the middle of the inside of the starting and closing seat, the two ends of the piston starting and closing rod are respectively provided with a conical fixture block, the outside above the piston starting and closing rod is provided with a stop valve rotating wheel, a stop plate is installed inside the stop valve body, and a sealing groove is formed in the middle of the inside of the stop plate.

Preferably, a fixed block is arranged inside the upper portion of the piston opening and closing rod, the piston opening and closing rod is fixedly connected with the fixed block, a sealing block is arranged in the middle of the inside of the fixed block, and the sealing block is connected with the fixed block in a sealing mode.

Preferably, a prompt block is arranged inside the upper portion of the piston opening and closing rod, the piston opening and closing rod and the prompt block are of an integrated structure, a piston sliding block is arranged outside the lower portion of the piston opening and closing rod, return springs are arranged on two sides of the lower portion of the piston sliding block, and the piston sliding block is fixedly connected with the piston opening and closing rod and the return springs.

Preferably, a piston chute is arranged in the manual starting and closing device seat, protective blocks are arranged on two sides of the lower portion of the piston chute, and the protective blocks are fixedly connected with the manual starting and closing device seat.

Preferably, a sealing plug is mounted at the lower end of the piston starting and closing rod, the sealing plug is fixedly connected with the piston starting and closing rod, a sealing air bag plug is mounted below the sealing plug, an air pipe is mounted inside the piston starting and closing rod, and the piston starting and closing rod is hermetically connected with the air pipe and the sealing air bag plug.

Preferably, one side of the stop valve body is provided with a first through hole, and the other side of the stop valve body is provided with a second through hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up and close toper draw-in groove, spacing conical groove, toper fixture block and suggestion piece, during the use, through operating to depress the piston and rise the closing rod and make the sealing plug close and plug up the seal groove, thereby in getting into the toper fixture block card again and rising and closing the toper draw-in groove, rise the closing rod to the piston and carry on spacing, when opening, mention the piston again and rise the closing rod, toper fixture block card goes into spacing conical groove, thereby carry on spacing, convenient operation, simple structure does benefit to manual operation, and when opening the valve, the suggestion piece can be rotated along with the piston and rise the closing rod and upwards expose, thereby can the visual directly perceived valve and opened, do benefit to the operation, whole performance is perfect;

2. the utility model discloses a set up sealing plug, sealed gasbag stopper, trachea and sealed piece, during the use, the sealing plug blocks up the seal groove, prevents the circulation of medium, thereby gaseous through the trachea get into in the sealed gasbag stopper make sealed gasbag inflation stopper in the seal groove for connect inseparabler more, it is sealed effectual, sealed piece has ensured the leakproofness when the trachea uses, whole simple structure is perfect, does benefit to the use.

Drawings

FIG. 1 is a front view of the high transmission ratio manual opening and closing device of the large nuclear power stop valve of the present invention;

FIG. 2 is a sectional view of the high transmission ratio manual opening and closing device of the large nuclear power stop valve of the utility model;

fig. 3 is a schematic structural view of the stop valve rotating wheel and the stop valve seat of the present invention.

In the figure: 1. a stop valve body; 2. a first port; 3. a second port; 4. a first sealed attachment flange; 5. a second sealed connecting flange; 6. a manual opening and closing device seat; 7. a lifting and closing seat; 8. starting and closing the conical clamping groove; 9. a limiting conical groove; 10. a piston opening and closing rod; 11. a stop valve runner; 12. a conical fixture block; 13. a prompt block; 14. a piston chute; 15. a piston slide block; 16. a protection block; 17. a sealing plug; 18. sealing the airbag plug; 19. a cut-off plate; 20. a sealing groove; 21. an air tube; 22. a fixed block; 23. a sealing block; 24. a return spring.

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.

Referring to fig. 1-3, the present invention provides an embodiment: manual high-transmission-ratio opening and closing device of large nuclear power stop valve, including stop valve body 1, second sealing flange 5 is installed to the upper end of stop valve body 1, first sealing flange 4 is installed to the top of second sealing flange 5, the leakproofness of connection has been ensured, the internally mounted of first sealing flange 4 top has manual opening and closing device seat 6, the intermediate position department of manual opening and closing device seat 6 top installs and has closed seat 7, the inside of closing seat 7 is provided with and has closed tapered draw-in groove 8, one side of closing tapered draw-in groove 8 is provided with spacing tapered groove 9, be convenient for operate the opening and closing, piston opening and closing rod 10 is installed to the intermediate position department of closing seat 7 inside, toper fixture block 12 is all installed at the both ends of piston opening and closing rod 10, the externally mounted of piston opening and closing rod 10 top has stop valve runner 11, the internally mounted of stop valve body 1 has stop plate 19, the intermediate position department of stop plate 19 inside is provided with seal groove 20.

Further, a fixing block 22 is arranged inside the upper portion of the piston opening and closing rod 10, the piston opening and closing rod 10 is fixedly connected with the fixing block 22, a sealing block 23 is arranged in the middle of the inside of the fixing block 22, the sealing block 23 is connected with the fixing block 22 in a sealing mode, and the connecting and sealing effects are good.

Further, the internally mounted that the piston rises and closes pole 10 top has suggestion piece 13, and the piston rises and closes pole 10 and suggestion piece 13 structure as an organic whole, and the externally mounted that the piston rises and closes pole 10 below has piston slider 15, and reset spring 24 is all installed to the both sides of piston slider 15 below, and piston slider 15 and piston rise and close pole 10 and the equal fixed connection of reset spring 24, and overall structure is more stable.

Further, the inside of manual start-stop device seat 6 is provided with piston spout 14, and protection piece 16 is all installed to the both sides of piston spout 14 below, and protection piece 16 and manual start-stop device seat 6 fixed connection connect reliably.

Further, a sealing plug 17 is installed at the lower end of the piston starting and closing rod 10, the sealing plug 17 is fixedly connected with the piston starting and closing rod 10, a sealing air bag plug 18 is installed below the sealing plug 17, an air pipe 21 is installed inside the piston starting and closing rod 10, and the piston starting and closing rod 10 is hermetically connected with the air pipe 21 and the sealing air bag plug 18, so that the connection tightness is further guaranteed, and the use is convenient.

Further, one side of the stop valve body 1 is provided with a first through hole 2, and the other side of the stop valve body 1 is provided with a second through hole 3, so that the structure is complete.

The working principle is as follows: when the stop valve is used, the stop valve body 1 is firstly installed outside a using pipeline, pipelines at two sides are respectively and fixedly connected with the first through hole 2 and the second through hole 3 in a sealing way, the manual opening and closing device seat 6 is installed through the sealing connection of the first sealing connecting flange 4 and the second sealing connecting flange 5, when the stop valve is used, nuclear power equipment is started, the equipment works, a medium flows into the pipeline, when the stop valve body 1 needs to be opened, the stop valve rotating wheel 11 is lifted by reverse rotation, so that the piston opening and closing rod 10 rotates upwards in the manual opening and closing device seat 6, the protection block 16 has a protection effect, the piston sliding block 15 slides upwards in the piston sliding groove 14 along with the piston sliding block, and as the reset spring 24 has certain telescopic elasticity, the working stability of the piston opening and closing rod 10 is ensured, the piston opening and closing rod 10 is driven to rotate to upwards expose the prompt block 13, so that the valve of the stop valve body 1 is conveniently observed by vision, the conical clamping block 12 is clamped into the limiting conical groove 9 to be limited by slow rotation and is arranged to be conical to be beneficial to clamping, so that the position of the piston starting and closing rod 10 is fixed, the valve is kept in an open state, a medium can conveniently flow into a pipeline through the sealing groove 20, the operation and use are convenient by arranging the limiting conical grooves 9, when the valve needs to be closed, the stop valve rotating wheel 11 is lifted upwards to enable the conical clamping block 12 to be separated from the limiting conical groove 9, then the stop valve rotating wheel 11 is rotated forwards and pressed downwards, so that the piston starting and closing rod 10 drives the sealing plug 17 to move downwards to be blocked outside the sealing groove 20 inside the stop plate 19, the sealing air bag plug 18 enters the sealing groove 20, then the piston starting and closing rod 10 is rotated to clamp the conical clamping block 12 into the starting and closing conical clamping groove 8 inside the starting and closing seat 7 to be positioned and locked, and the reset spring 24 has certain telescopic reaction force, so that the locking effect of the starting and closing conical clamping groove 8 and the conical clamping block 12 is ensured, and then the external hose is connected with the air pipe 21 and the air pump, the air pump works, air is discharged into the sealed air bag plug 18 through the air pipe 21, and the sealed air bag plug 18 is filled with air to start to expand and plug the sealing groove 20, so that the sealing effect is better, the operation is facilitated, the work is completed after the sealing is good, and the manual operation is simple.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. 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.

Claims

1. Manual device that opens and shuts of high drive ratio of large-scale nuclear power stop valve, including stop valve body (1), its characterized in that: the stop valve is characterized in that a second sealing connecting flange (5) is installed at the upper end of the stop valve body (1), a first sealing connecting flange (4) is installed above the second sealing connecting flange (5), a manual opening and closing device seat (6) is installed inside the first sealing connecting flange (4), a opening and closing seat (7) is installed at the middle position above the manual opening and closing device seat (6), a opening and closing conical clamping groove (8) is formed in the opening and closing seat (7), a limiting conical groove (9) is formed in one side of the opening and closing conical clamping groove (8), a piston opening and closing rod (10) is installed at the middle position inside the opening and closing seat (7), conical clamping blocks (12) are installed at two ends of the piston opening and closing rod (10), a rotary wheel stop valve (11) is installed outside the upper portion of the piston opening and closing rod (10), and a stop plate (19) is installed inside the stop valve body (1), and a sealing groove (20) is arranged in the middle position inside the stop plate (19).

2. The high-transmission-ratio manual starting and closing device of the large nuclear power stop valve according to claim 1, characterized in that: the piston is started and is closed the internally mounted of pole (10) top and has fixed block (22), piston is started and is closed pole (10) and fixed block (22) fixed connection, the inside intermediate position department of fixed block (22) installs sealed piece (23), sealed piece (23) and fixed block (22) sealing connection.

3. The high-transmission-ratio manual starting and closing device of the large nuclear power stop valve according to claim 1, characterized in that: the utility model discloses a piston rod, including piston rod (10), piston rod (10) and prompting block (13), the internally mounted of piston rod (10) top has prompting block (13), piston rod (10) and prompting block (13) structure as an organic whole, the externally mounted of piston rod (10) below has piston slider (15), reset spring (24) are all installed to both sides of piston slider (15) below, piston slider (15) and piston rod (10) and the equal fixed connection of reset spring (24) have been closed.

4. The high-transmission-ratio manual starting and closing device of the large nuclear power stop valve according to claim 1, characterized in that: the manual starting and closing device seat is characterized in that a piston sliding groove (14) is formed in the manual starting and closing device seat (6), protective blocks (16) are mounted on two sides of the lower portion of the piston sliding groove (14), and the protective blocks (16) are fixedly connected with the manual starting and closing device seat (6).

5. The high-transmission-ratio manual starting and closing device of the large nuclear power stop valve according to claim 1, characterized in that: the lower end of the piston opening and closing rod (10) is provided with a sealing plug (17), the sealing plug (17) is fixedly connected with the piston opening and closing rod (10), a sealing air bag plug (18) is arranged below the sealing plug (17), an air pipe (21) is arranged inside the piston opening and closing rod (10), and the piston opening and closing rod (10) is hermetically connected with the air pipe (21) and the sealing air bag plug (18).

6. The high-transmission-ratio manual starting and closing device of the large nuclear power stop valve according to claim 1, characterized in that: one side of the stop valve body (1) is provided with a first through opening (2), and the other side of the stop valve body (1) is provided with a second through opening (3).