CN211439813U

CN211439813U - Special tool for taking out piston of sectional closing valve

Info

Publication number: CN211439813U
Application number: CN201922254327.2U
Authority: CN
Inventors: 陈正新; 凌德贵; 韩普昌; 狄宗向; 杨萍艳
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-09-08
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a special tool for taking out a segmented shut-off valve piston, which comprises a cross-shaped support frame, wherein four corners of the cross-shaped support frame are provided with first threaded holes; each first threaded hole is internally provided with a double-head screw; a second threaded hole is formed in the center of the cross-shaped support frame, and a taking-out rod is arranged in the second threaded hole. The device fixes the cross support frame on the valve through adopting the double-end screw rod that matches with former piston gland size, then compresses tightly the piston inner wall through the buckle that takes out pole one end, extracts the piston through rotatory pole of taking out then. The problem of among the prior art take out when the piston not have the stress point, inefficiency is solved, have simple structure, portable, take out the higher characteristics of efficiency when segmentation shut-off valve piston.

Description

Special tool for taking out piston of sectional closing valve

Technical Field

The utility model belongs to the technical field of the bearing cooling is derived in the power station, concretely relates to segmentation shut-off valve piston takes out specialized tool.

Background

In a hydroelectric power station governor system, a section shut-off valve is required. After the piston seal of the sectional closing valve is aged, a new sealing ring needs to be replaced, and the sealing performance of the sectional closing valve can be ensured. However, in actual operation, after the sealing piston is disassembled, the inner part of the piston is a cavity, the upper end surface and the lower end surface of the piston are two through holes, and the piston body is not connected with other parts. The piston can not be taken out when being taken out, no good stress position exists, and no special tool for disassembly exists. The normal maintenance of the equipment is influenced, and the working efficiency of maintainers is greatly reduced.

In summary, in order to improve the maintenance efficiency, it is necessary to design a special tool for taking out the segmented shut-off valve when the piston is replaced and sealed.

Disclosure of Invention

The utility model aims to solve the technical problem that a segmentation shut-off valve piston takes out specialized tool is provided, and the device fixes the cross support frame on the valve through the double-end screw that adopts and former piston gland size matching, then compresses tightly piston inner wall through the buckle that takes out pole one end, extracts the piston through the rotatory pole of taking out then. The problem of among the prior art take out when the piston not have the stress point, inefficiency is solved, have simple structure, portable, take out the higher characteristics of efficiency when segmentation shut-off valve piston.

In order to realize the above design, the utility model adopts the following technical scheme: a special tool for taking out a piston of a sectional closing valve comprises a cross-shaped support frame, wherein four corners of the cross-shaped support frame are provided with first threaded holes; each first threaded hole is internally provided with a double-head screw; a second threaded hole is formed in the center of the cross-shaped support frame, and a taking-out rod is arranged in the second threaded hole.

The taking-out rod is a through hollow straight rod with threads formed in one end of the outer surface, and the through hollow straight rod is matched with the second threaded hole through the threads.

And two nuts are respectively connected to two sides of the contact surface of the double-end screw and the cross-shaped support frame.

One side of the contact surface of the taking-out rod and the cross-shaped support frame is connected with a nut.

The other end of the taking-out rod is connected with a buckle, and the buckle is of a straight rod structure.

The middle point of the buckle is connected and matched with the taking-out rod through a bolt and can rotate around the connection position.

Both ends of the buckle are connected with steel wire ropes, and the steel wire ropes penetrate through the hollow interior of the taking-out rod and extend out of the other end of the taking-out rod.

A special tool for taking out a piston of a sectional closing valve comprises a cross-shaped support frame, wherein four corners of the cross-shaped support frame are provided with first threaded holes; each first threaded hole is internally provided with a double-head screw; a second threaded hole is formed in the center of the cross-shaped support frame, and a taking-out rod is arranged in the second threaded hole. The device fixes the cross support frame on the valve through the double-end screw who adopts and former piston gland size matching, then compresses tightly the piston inner wall through the buckle that takes out pole one end, extracts the piston through rotatory pole of taking out then, and simple structure, portable takes out the segmentation shut-off valve piston efficiency higher.

In a preferred scheme, the taking-out rod is a through hollow straight rod with a thread formed in one end of the outer surface, and the through hollow straight rod is matched with the second threaded hole through the thread. Simple structure, during the use, it stretches into inside the piston to take out the pole, blocks the piston through the buckle, then takes out the pole through the rotation, extracts the piston, and the cavity design can be convenient for wire rope and pass.

In a preferred scheme, two sides of the contact surface of the double-end screw and the cross-shaped support frame are respectively connected with a nut. The structure is simple, and when the sectional type double-end screw is used, the size of the double-end screw is matched with that of a piston of the sectional type closing valve; when the segmented shut-off valve piston is disassembled, firstly, the gland on the upper part of the segmented shut-off valve piston is taken down, then the four double-head screws are screwed into the bolt holes of the original fixed piston gland, the cross-shaped support frame is installed, and finally the nuts on the two sides are screwed to limit the double-head screws.

In a preferred scheme, one side of the contact surface of the taking-out rod and the cross support frame is connected with a nut. Simple structure, during the use, after installing the cross support frame, will take out inside the pole stretches into the piston, take out pole one end and fix in advance on the cross support frame with the nut, when setting up the buckle, use the spanner clockwise rotation to take out the nut of pole one end, can make and take out pole and nut relative motion to slowly promote the piston, until taking out the piston completely.

In the preferred scheme, the other end of the taking-out rod is connected with a buckle, and the buckle is of a straight rod structure. Simple structure, during the use, the buckle is used for chucking piston inner wall, is equivalent to grabbing device.

In a preferred scheme, the middle point of the buckle is connected and matched with the taking-out rod through a bolt and can rotate around the connection position. Simple structure, during the use, pulling wire rope makes the buckle rotatory, can make the buckle become transversely by vertical, and the card is inside the piston to with the piston chucking.

In the preferred scheme, both ends of the buckle are connected with steel wire ropes, and the steel wire ropes penetrate through the hollow interior of the taking-out rod and extend out of the other end of the taking-out rod. The structure is simple, when the piston is used, the two steel wire ropes on the two sides are matched with each other, and when the piston needs to be clamped, the two steel wire ropes are respectively pulled to enable the clamping in the piston to be transverse, so that the inner wall of the piston is clamped; after the piston is taken out, the steel wire rope on one side is pulled, so that the buckle is changed into a longitudinal direction in the piston, and the buckle can be conveniently taken out.

A special tool for taking out a piston of a sectional closing valve comprises a cross-shaped support frame, wherein four corners of the cross-shaped support frame are provided with first threaded holes; each first threaded hole is internally provided with a double-head screw; a second threaded hole is formed in the center of the cross-shaped support frame, and a taking-out rod is arranged in the second threaded hole. The device fixes the cross support frame on the valve through adopting the double-end screw rod that matches with former piston gland size, then compresses tightly the piston inner wall through the buckle that takes out pole one end, extracts the piston through rotatory pole of taking out then. The problem of among the prior art take out when the piston not have the stress point, inefficiency is solved, have simple structure, portable, take out the higher characteristics of efficiency when segmentation shut-off valve piston.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic diagram of the present invention cooperating with a piston.

Fig. 3 is a schematic structural view of the cross-shaped support frame of the present invention.

Fig. 4 is a schematic structural view of the withdrawing rod and the buckle part of the present invention.

The reference numbers in the figures are: cross support frame 1, first screw hole 11, second screw hole 12, double threaded screw 2 takes out pole 3, buckle 4, wire rope 5.

Detailed Description

As shown in fig. 1 to 4, a special tool for taking out a piston of a sectional closing valve comprises a cross support frame 1, wherein four corners of the cross support frame 1 are provided with first threaded holes 11; a double-headed screw 2 is arranged in each first threaded hole 11; a second threaded hole 12 is formed in the center of the cross support frame 1, and a take-out rod 3 is arranged in the second threaded hole 12. The device is through adopting with former piston gland size matching's double-end screw 2, fixes cross support frame 1 on the valve, then compresses tightly piston inner wall through buckle 4 of taking out 3 one ends of pole, extracts the piston through rotatory pole 3 then, and simple structure, portable takes out the segmentation and closes the valve piston efficiency higher.

In the preferred scheme, the taking-out rod 3 is a through hollow straight rod with a thread on one end of the outer surface, and is matched with the second threaded hole 12 through the thread. Simple structure, during the use, take out inside pole 3 stretched into the piston, blocked the piston through buckle 4, then take out pole 3 through the rotation, extract the piston, the cavity design can be convenient for wire rope 5 and pass.

In the preferred scheme, two sides of the contact surface of the double-end screw 2 and the cross support frame 1 are respectively connected with a nut. The structure is simple, and when the sectional type double-end screw 2 is used, the size of the double-end screw is matched with that of a sectional type closing valve piston; when the segmented shut-off valve piston is disassembled, firstly, the gland on the upper part of the segmented shut-off valve piston is taken down, then the four double-head screws 2 are screwed into the bolt holes of the original fixed piston gland, the cross-shaped support frame 1 is installed, and finally the nuts on the two sides are screwed to limit the double-head screws 2.

In a preferred scheme, one side of the contact surface of the taking-out rod 3 and the cross support frame 1 is connected with a nut. Simple structure, during the use, after installing cross support frame 1, will take out inside pole 3 stretches into the piston, take out 3 one ends of pole and fix in advance on cross support frame 1 with the nut, when setting up buckle 4, use the nut of 3 one ends of spanner clockwise rotation take out, can make and take out pole 3 and nut relative motion to slowly promote the piston, until taking out the piston completely.

In the preferred scheme, the other end of the taking-out rod 3 is connected with a buckle 4, and the buckle 4 is of a straight rod structure. Simple structure, during the use, buckle 4 is used for chucking piston inner wall, is equivalent to grabbing device.

In a preferred scheme, the middle point of the buckle 4 is connected and matched with the taking-out rod 3 through a bolt and can rotate around the connection position. Simple structure, during the use, pulling wire rope 5 makes buckle 4 rotatory, can make buckle 4 become transversely by vertical, and the card is inside the piston to with the piston chucking.

In the preferred scheme, 4 both ends of buckle are all connected with wire rope 5, and wire rope 5 passes the hollow inside of taking out pole 3, stretches out from the other end of taking out pole 3. The structure is simple, when the piston is used, the two steel wire ropes 5 on the two sides are matched with each other, and when the piston needs to be clamped, the two steel wire ropes 5 are respectively pulled, so that the buckle 4 becomes transverse in the piston, and the inner wall of the piston is clamped; after the piston is taken out, the steel wire rope 5 on one side is pulled, so that the buckle 4 is changed into a longitudinal direction in the piston, and the buckle 4 can be conveniently taken out.

When the special tool for taking out the piston of the sectional closing valve is installed and used, the four corners of the cross-shaped support frame 1 are provided with the first threaded holes 11; a double-headed screw 2 is arranged in each first threaded hole 11; a second threaded hole 12 is formed in the center of the cross support frame 1, and a take-out rod 3 is arranged in the second threaded hole 12. The device is through adopting with former piston gland size matching's double-end screw 2, fixes cross support frame 1 on the valve, then compresses tightly piston inner wall through buckle 4 of taking out 3 one ends of pole, extracts the piston through rotatory pole 3 then, and simple structure, portable takes out the segmentation and closes the valve piston efficiency higher.

During the use, take out pole 3 and set up the screwed cavity straight-bar that link up for surface one end, through screw thread and the 12 cooperations of second screw hole, take out inside pole 3 stretched into the piston, block the piston through buckle 4, then take out pole 3 through the rotation, extract the piston, the cavity design can be convenient for wire rope 5 and pass.

When the sectional type closing valve is used, two nuts are respectively connected to two sides of the contact surface of the double-end screw 2 and the cross support frame 1, and the size of the double-end screw 2 is matched with that of a sectional type closing valve piston; when the segmented shut-off valve piston is disassembled, firstly, the gland on the upper part of the segmented shut-off valve piston is taken down, then the four double-head screws 2 are screwed into the bolt holes of the original fixed piston gland, the cross-shaped support frame 1 is installed, and finally the nuts on the two sides are screwed to limit the double-head screws 2.

During the use, take out one side of pole 3 and 1 contact surface of cross support frame and be connected with a nut, install cross support frame 1 back, will take out pole 3 and stretch into inside the piston, take out 3 one ends of pole and fix in advance on cross support frame 1 with the nut, when setting up buckle 4, use the nut of 3 one ends of spanner clockwise rotation take out pole, can make and take out pole 3 and nut relative motion to slowly promote the piston, until taking out the piston completely.

During the use, take out 3 other ends of pole and be connected with buckle 4, buckle 4 is the straight-bar structure, and buckle 4 is used for chucking piston inner wall, is equivalent to grabbing device.

During the use, buckle 4's mid point department is connected the cooperation through the bolt with taking out pole 3, can rotate around the junction, and pulling wire rope 5 makes buckle 4 rotatory, can make buckle 4 become horizontal by vertically, and the card is inside the piston to with the piston chucking.

When the piston is used, the two ends of the buckle 4 are connected with the steel wire ropes 5, the steel wire ropes 5 penetrate through the hollow interior of the taking-out rod 3 and extend out of the other end of the taking-out rod 3, the two steel wire ropes 5 on the two sides are matched with each other, and when clamping is needed, the two steel wire ropes 5 are pulled respectively, so that the buckle 4 becomes transverse in the piston, and the inner wall of the piston is clamped; after the piston is taken out, the steel wire rope 5 on one side is pulled, so that the buckle 4 is changed into a longitudinal direction in the piston, and the buckle 4 can be conveniently taken out.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a segmentation shut-off valve piston takes out specialized tool which characterized in that: the device comprises a cross-shaped support frame (1), wherein four corners of the cross-shaped support frame (1) are provided with first threaded holes (11); a double-head screw (2) is arranged in each first threaded hole (11); a second threaded hole (12) is formed in the center of the cross-shaped support frame (1), and a taking-out rod (3) is arranged in the second threaded hole (12).

2. The special tool for extraction of a piston of a segment shut-off valve according to claim 1 wherein: the taking-out rod (3) is a through hollow straight rod with a thread formed in one end of the outer surface, and is matched with the second threaded hole (12) through the thread.

3. The special tool for extraction of a piston of a segment shut-off valve according to claim 1 wherein: and two nuts are respectively connected to two sides of the contact surface of the double-end screw (2) and the cross support frame (1).

4. The special tool for extraction of a piston of a segment shut-off valve according to claim 1 wherein: one side of the contact surface of the taking-out rod (3) and the cross-shaped support frame (1) is connected with a nut.

5. The special tool for extraction of a piston of a segment shut-off valve according to claim 4 wherein: the other end of the taking-out rod (3) is connected with a buckle (4), and the buckle (4) is of a straight rod structure.

6. The special tool for extraction of a piston of a segment shut-off valve according to claim 5 wherein: the middle point of the buckle (4) is connected and matched with the taking-out rod (3) through a bolt and can rotate around the connection position.

7. The special tool for extraction of a piston of a segment shut-off valve according to claim 5 wherein: both ends of the buckle (4) are connected with steel wire ropes (5), and the steel wire ropes (5) penetrate through the hollow interior of the taking-out rod (3) and extend out of the other end of the taking-out rod (3).