CN218534386U

CN218534386U - Extraction tool

Info

Publication number: CN218534386U
Application number: CN202222157137.0U
Authority: CN
Inventors: 宋卫红; 赵卫振
Original assignee: Guoneng Hebei Hengfeng Power Generation Co ltd
Current assignee: Guoneng Hebei Hengfeng Power Generation Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2023-02-28
Anticipated expiration: 2032-08-16

Abstract

The present disclosure provides a take out instrument for take out the case of gate valve from the disk seat, take out the instrument and include: the screw rod extends along the vertical direction, and the bottom end of the screw rod is provided with a connecting part used for being connected with the valve core; the mounting frame is used for being placed on the valve seat and provided with a first supporting part and a second supporting part which are arranged at intervals from top to bottom along the vertical direction, the first supporting part and the second supporting part are respectively provided with a through hole for the screw to pass through, and the first supporting part and the second supporting part form a guiding structure for guiding the screw to extend along the vertical direction; and the actuating piece comprises a first nut which is in threaded connection with the screw rod and can be stopped above the first supporting part. This take out instrument can be convenient for take out the case from the gate valve, and can avoid haring case and disk seat.

Description

Extraction tool

Technical Field

The utility model relates to a valve overhauls the instrument field, specifically relates to a take out instrument.

Background

The gate valve is widely applied to a power plant, but some valve units are closed too tightly during operation, so that a thermal expansion valve core is clamped in a valve seat. When in maintenance, the valve core can not be taken out by using common lifting tools by using methods such as prying, knocking and lifting, and if the method of damaging the valve core is adopted, the valve core and the valve seat can not be used, so that the valve needs to be replaced, and the material cost is too high.

SUMMERY OF THE UTILITY MODEL

It is an object of the present disclosure to provide a removal tool that can facilitate removal of a valve cartridge from a gate valve and can avoid damage to the valve cartridge and valve seat to at least partially address the above technical problems.

In order to achieve the above object, the present disclosure provides an extraction tool for extracting a valve body of a gate valve from a valve seat, the extraction tool including: the screw rod extends along the vertical direction, and the bottom end of the screw rod is provided with a connecting part for connecting the screw rod with the valve core; the mounting frame is used for being placed on the valve seat and is provided with a first supporting part and a second supporting part which are arranged at intervals from top to bottom along the vertical direction, the first supporting part and the second supporting part are respectively provided with a through hole for the screw rod to pass through, and the first supporting part and the second supporting part form a guiding structure for guiding the screw rod to extend along the vertical direction; and the actuating piece comprises a first nut which is in threaded connection with the screw rod and can be stopped above the first supporting part.

Optionally, the actuating member further includes a second nut threadedly coupled to the screw and capable of stopping above the second support portion, and the second nut is located between the first support portion and the second support portion.

Optionally, the first supporting portion is configured as a first plate body, the second supporting portion is configured as a second plate body, and the mounting frame comprises a connecting frame arranged between the first supporting portion and the second supporting portion, and a supporting frame arranged at the bottom end of the second supporting portion.

Optionally, the support frame comprises at least two support legs arranged at intervals around the circumference of the screw.

Optionally, the length of the support leg in the vertical direction is greater than the length of the valve core in the vertical direction.

Optionally, the connecting frame comprises at least two connecting rods arranged at intervals around the circumference of the screw.

Optionally, the connecting rod extends from the bottom end obliquely upward and toward the screw.

Optionally, the central lines of the first plate body and the second plate body are coincident with the central axis of the screw, and the projection area of the first plate body in the vertical direction is smaller than the projection area of the second plate body in the vertical direction.

Optionally, the connecting portion is configured as a rod body inserted into the lifting hole of the valve element and extending in a horizontal direction.

Optionally, the connecting end of the rod body and the screw rod is provided with a contact surface, and the contact surface is used for abutting against the inner top surface of the valve core lifting hole.

Through the technical scheme, promptly the instrument of taking out that this disclosure provided, the screw rod passes the through-hole of first supporting part and second supporting part in proper order, the connecting portion of screw rod bottom connects the gate valve case, and the mounting bracket is placed on the disk seat, stop in the first nut of first supporting part on the rotating screw rod, in order to order about screw rod rebound, thereby take out the gate valve case, can avoid using sled when taking out the case, strike, can not take out the case under some circumstances of lifting etc. the method, adopt the method of destroying the case will lead to case and disk seat to be unable to use, thereby will change the valve, produce the circumstances such as too high material cost, can effectively solve the case damage and the case can't take out that human factor and bad instrument factor caused the case in the case removal process. In addition, a guide structure for guiding the screw rod to extend along the vertical direction is formed by the first support part and the second support part, so that the screw rod can be more stably guided to move upwards, and the situation that the screw rod is unstable to shake or deform and the like when the first nut is screwed to lift the screw rod is avoided.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a front view of a removal tool provided in an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic illustration of the mating of a take-out tool with a gate valve provided in an exemplary embodiment of the present disclosure;

fig. 3 is a perspective view of a mounting bracket provided in an exemplary embodiment of the present disclosure;

FIG. 4 is a perspective view of a screw provided in an exemplary embodiment of the present disclosure;

FIG. 5 is a perspective view of a screw provided in an exemplary embodiment of the present disclosure in cooperation with a portion of a valve cartridge configured with a poppet hole location;

FIG. 6 is a schematic view of a first nut provided in an exemplary embodiment of the present disclosure;

fig. 7 is a schematic view of a second nut provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

1-a screw; 11-a connecting portion; 111-a rod body; 1111-a contact surface; 2-an actuating member; 21-a first nut; 22-a second nut; 3-mounting a frame; 31-a first support part; 311-a first plate body; 32-a second support; 321-a second plate body; 33-a connecting frame; 331-connecting rod; 34-a support frame; 341-supporting legs; 4-a gate valve; 41-valve core; 411-top interior surface; 42-valve seat.

Detailed Description

In the present disclosure, directional terms such as "inner and outer" refer to inner and outer relative to the profile of a component or structure itself, unless otherwise specified. In addition, it should be noted that terms such as "first", "second", and the like are used for distinguishing one element from another, and have no order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

The inventor has found that in the related art, referring to fig. 1 and fig. 2, the gate valve is widely applied to power plants, but some valve units are closed too tightly during operation, so that thermal expansion is caused, and the valve core is clamped in the valve seat. During maintenance, the valve core cannot be taken out by using common lifting tools such as prying, knocking, lifting and the like, and if the method for damaging the valve core is adopted, the valve core and the valve seat cannot be used, so that the valve needs to be replaced, and excessive material cost is generated.

In view of this, an embodiment of the present disclosure provides an extraction tool, as shown in fig. 1 to 7, for extracting a valve body 41 of a gate valve 4 from a valve seat 42, the extraction tool including: a screw 1 extending in a vertical direction and having a connecting portion 11 at a bottom end thereof for connection with the valve body 41; the mounting frame 3 is used for being placed on the valve seat 42 and is provided with a first supporting part 31 and a second supporting part 32 which are arranged at intervals from top to bottom along the vertical direction, the first supporting part 31 and the second supporting part 32 are respectively provided with a through hole for the screw rod 1 to pass through, and the first supporting part 31 and the second supporting part 32 form a guiding structure for guiding the screw rod 1 along the vertical direction; and an actuator 2 including a first nut 21 screwed to the screw 1 and capable of stopping above the first support portion 31.

Through the technical scheme, the screw rod 1 sequentially penetrates through the through holes of the first supporting part 31 and the second supporting part 32, the connecting part 11 at the bottom end of the screw rod 1 is connected with the valve core 41 of the gate valve 4, the mounting frame 3 is placed on the valve seat 42, the first nut 21 which is stopped on the first supporting part 31 is rotated on the screw rod 1 to drive the screw rod 1 to move upwards, so that the valve core 41 of the gate valve 4 is taken out, the situation that the valve core cannot be taken out under the condition that the valve core cannot be taken out by using methods such as prying, knocking and lifting when the valve core is taken out can be avoided, the situation that the valve core and the valve seat cannot be used due to the adoption of a method for damaging the valve core, the valve core and the valve seat are required to be replaced, the situation that the cost of materials is too high and the like is generated, and the situations that the valve core is damaged and the valve core cannot be taken out in the process caused by human factors and bad tool factors can be effectively solved. In addition, the first support portion 31 and the second support portion 32 form a guide structure for guiding the screw 1 to extend in the vertical direction, so that the screw 1 can be more stably guided to move upward, and the situation that the screw 1 is unstably shaken or deformed when the screw 1 is lifted when the first nut 21 is screwed is avoided.

In some specific embodiments, referring to fig. 1, 2 and 7, the actuating member 2 further comprises a second nut 22 screwed to the screw rod 1 and capable of stopping above the second support portion 32, and the second nut 22 is located between the first support portion 31 and the second support portion 32. In this embodiment, the first nut 21 can be used to directly lift the valve core 41, and the second nut 22 can make the structure of the tool for taking out more stable, for example, when the first nut 21 is rotated to lift the screw rod upward for a certain distance, the second nut 22 is screwed to make the second nut 22 abut against the second supporting portion 32 to bear force with the first nut 21 at the same time, or when the first nut 21 is rotated to lift the screw rod 1, the second nut 22 can be screwed at the same time to make the second nut 22 and the first nut 21 share the gravity of the valve core, in this way, because the valve core is heavy, the service life of the tool for taking out can be improved by the gravity shared by the second nut 22 and the first nut 21.

In some specific embodiments, referring to fig. 3, the first supporting portion 31 is configured as a first plate 311, the second supporting portion 32 is configured as a second plate 321, and the mounting bracket 3 includes a connecting frame 33 disposed between the first supporting portion 31 and the second supporting portion 32, and a supporting frame 34 disposed at a bottom end of the second supporting portion 32. Through the connection mode, the mounting frame 3 can enable the external force applied to be uniformly distributed to all structures in the mounting frame 3 in the process of taking out the valve core 41, and the valve core 41 is taken out more stably.

In some specific embodiments, referring to fig. 3, the support frame 34 includes at least two support legs 341 arranged at intervals around the circumference of the screw 1, in fig. 3, the support legs 341 may be arranged on the support frame 34 in any number of two or more, and during the process of removing the valve core 41, the bottom end of the support leg 341 abuts against the valve seat 42, so that the force applied to the valve core 41 by the connecting portion 11 is opposite to the force applied to the valve seat 42 by the support leg 341, and the removal of the valve core 41 is facilitated. Fig. 3 exemplarily shows an embodiment in which the number of the support legs 341 is 4 to stably place the mounting frame 3 for easy removal of the valve core 41.

In some specific embodiments, as shown with reference to fig. 2, the support leg 341 has a length in the vertical direction greater than that of the valve element 41, so that the valve element 41 can be completely separated from the valve seat 42 after the valve element 41 is removed.

In some specific embodiments, referring to fig. 1, 2 and 3, the connecting frame 33 includes at least two connecting rods 331 spaced around the circumference of the screw 1, and in fig. 3, the connecting rods 331 are connected between the first plate 311 and the second plate 321 in four different directions to form a stable structure.

In some embodiments, referring to fig. 3, the connecting rod 331 extends from the bottom end upwards and slantingly towards the screw 1, and by this extension, the stability of the mounting frame 3 can be improved.

In some specific embodiments, referring to fig. 1, 2, and 3, center lines of the first plate 311 and the second plate 321 coincide with a central axis of the screw 1, and a projection area of the first plate 311 in the vertical direction is smaller than a projection area of the second plate 321 in the vertical direction, so that, when the valve core 41 is viewed at a lower angle, a structure with a small top and a large bottom is formed, and when the valve core 41 is taken out, the second plate 321 can disperse a force transmitted to the first plate 311 by the valve core 41 through the connecting rod 331, so that the force is more labor-saving when the valve core 41 is taken out, and a larger operation space is provided for operating the second nut 22, so that the second nut 22 can be rotated conveniently for a person to operate.

In some specific embodiments, referring to fig. 1, 2, 4 and 5, the connection portion 11 is configured as a rod 111 inserted into the lifting hole of the valve core 41 and extending in a horizontal direction. Fig. 5 schematically illustrates a partial structure of the valve core 41 where the lifting hole is provided, when the rod 111 is configured at the connection portion 11, the rod 111 may be extended into the lifting hole of the valve core 41 and hung inside the lifting hole of the valve core 41 after being rotated 90 degrees, and the valve core 41 may be extracted in a vertical direction.

In some specific embodiments, referring to fig. 2, 4 and 5, the connection end of the rod body 111 and the screw 1 has a contact surface 1111, the contact surface 1111 is used for abutting against the inner top surface 411 of the lifting hole of the valve element 41, the contact surface 1111 abuts against the inner top surface 411, through surface-to-surface contact, the contact area between the rod body 111 and the valve element 41 can be increased, so that the rod body 111 is stressed more stably, the stress concentration phenomenon is avoided, and interaction force is formed between the two surfaces when the valve element is extracted, so that the valve element 41 can be extracted from the valve seat 42.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. To avoid unnecessary repetition, the disclosure does not separately describe various possible combinations.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A removal tool for removing a core of a gate valve from a valve seat, the removal tool comprising:

the screw rod extends along the vertical direction, and the bottom end of the screw rod is provided with a connecting part used for being connected with the valve core;

the mounting frame is used for being placed on the valve seat and is provided with a first supporting part and a second supporting part which are arranged at intervals from top to bottom along the vertical direction, the first supporting part and the second supporting part are respectively provided with a through hole for the screw rod to pass through, and the first supporting part and the second supporting part form a guiding structure for guiding the screw rod to extend along the vertical direction; and

the actuating piece comprises a first nut which is in threaded connection with the screw rod and can be stopped above the first supporting part.

2. The extraction tool according to claim 1, wherein the actuator further comprises a second nut threadably connected to the threaded rod and capable of stopping over the second support portion, and the second nut is located between the first support portion and the second support portion.

3. The extraction tool according to claim 1 or 2, wherein the first support portion is configured as a first plate, the second support portion is configured as a second plate, and the mounting bracket includes a connecting bracket provided between the first support portion and the second support portion, and a support bracket provided at a bottom end of the second support portion.

4. The extraction tool of claim 3 wherein the support bracket includes at least two support legs spaced circumferentially about the threaded rod.

5. The extraction tool of claim 4 wherein the support leg has a length in the vertical direction that is greater than a length of the valve core in the vertical direction.

6. The extraction tool according to claim 3, wherein the connecting frame includes at least two connecting rods spaced circumferentially around the threaded rod.

7. The extraction tool according to claim 6, wherein the connecting rod extends from the bottom end upwardly and obliquely toward the screw.

8. The extraction tool according to claim 3, wherein the first plate and the second plate each have a center line coincident with a center axis of the threaded rod, and a projected area of the first plate in the vertical direction is smaller than a projected area of the second plate in the vertical direction.

9. The removal tool of claim 1, wherein the connection portion is configured as a rod extending in a horizontal direction for insertion into a lift hole of the valve core.

10. The removal tool of claim 9, wherein the connection end of the rod body to the threaded rod has a contact surface for abutting against an inner top surface of the poppet lifting hole.