CN217966823U

CN217966823U - Valve cover dismounting device for plugging valve

Info

Publication number: CN217966823U
Application number: CN202221470202.9U
Authority: CN
Inventors: 汪哲飞; 周龙
Original assignee: Zhejiang Zhengneng Electric Power Engineering Technology Co ltd
Current assignee: Zhejiang Zhengneng Electric Power Engineering Technology Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-12-06
Anticipated expiration: 2032-06-10

Abstract

The utility model relates to a stifled valve gap dismouting device. The problem that parts are popped up and the safety is poor due to the fact that blockage in the prior art is easily disassembled and assembled is solved. It is including setting up at the inboard valve gap of stifled valve circumference, and the valve gap upper end is equipped with the bearing plate, and is equipped with between bearing plate and the valve gap and links to each other through the valve gap screw rod, and the stifled valve up end is equipped with dismouting iron plate structure, through radially setting up the bolted connection subassembly releasable connection on dismouting iron plate between dismouting iron plate structure and the valve gap screw rod, is equipped with the roof pressure subassembly between dismouting iron plate and the stifled valve circumference. The utility model has the advantages that: the dismouting is convenient, and the security is good.

Description

Valve cover dismounting device for plugging valve

Technical Field

The utility model relates to a valve assembly and disassembly tools technical field, concretely relates to stifled valve gap dismouting device.

Background

The hydraulic test block valve is arranged on steam pipelines of a superheated steam outlet and a reheated steam inlet and outlet of the boiler and is used as important equipment for isolating static hydraulic test and avoiding water inlet of a steam turbine. The blocking valve comprises a shell, a cover plate, a pressing plate, a self-sealing body, a sealing piece and a four-ring, wherein the self-sealing body is arranged in the shell, the four-ring is arranged on the inner wall of the shell to form abutting pressure on the self-sealing body, and the sealing piece is arranged between the four-ring and the self-sealing body to realize sealing. And removing the parts such as the internal plugging plate, the supporting plate and the like after the hydrostatic test, loading the guide sleeve as a pipeline to recover the normal use state, taking out the guide sleeve when the hydrostatic test is carried out again, and reloading the internal parts such as the plugging plate, the supporting plate and the like. The blocking valve is connected in a butt welding mode, the sealing ring can be pressed by means of medium pressure to achieve reliable sealing when a hydrostatic test or operation is carried out, and the sealing is more reliable when the pressure is higher. Due to the special structure of the block valve, the self-sealing body of the block valve is very difficult to assemble and disassemble, and the traditional manual assembly and disassembly not only wastes time and labor, but also has low efficiency and is easy to cause damage; in addition, in the process of dismounting and mounting of the existing plugging valve, parts are easy to pop up, and the safety is poor.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent document discloses a valve disassembling tool [ CN201720324262.2], which comprises a housing, a cover plate, a pressure plate and a self-sealing body, wherein the valve disassembling tool comprises a connecting assembly and a jack; the connecting assembly is provided with a first connecting state, and the jack is provided with a first position; and/or the connecting assembly has a second connecting state and the jack has a second position; when the connecting assembly is in the first connecting state, the jack is located at the first position and used for providing pressure for the self-sealing body, and when the connecting assembly is in the second connecting state, the jack is used for providing tension for the self-sealing body.

Above-mentioned scheme has solved to a certain extent stifled valve dismouting in prior art and has wasted time and energy and the problem of inefficiency, but this scheme still has a great deal of not enough, for example: in the process of disassembling and assembling the plugging valve, parts are easy to pop up, and the safety is poor.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a stifled valve gap dismouting device of reasonable in design, safe in utilization.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model provides a stifled valve gap dismouting device, is including setting up the inboard valve gap in stifled valve circumference, and the valve gap upper end is equipped with the bearing plate, and is equipped with between bearing plate and the valve gap and links to each other through the valve gap screw rod, and stifled valve up end is equipped with dismouting iron plate structure, through radially setting up the bolt connection subassembly releasable connection on dismouting iron plate between dismouting iron plate structure and the valve gap screw rod, is equipped with the roof pressure subassembly between dismouting iron plate and the stifled valve circumference. During the dismantlement, through placing the dismouting iron plate structure on the roof pressure subassembly of stifled valve upper end, be connected bolt coupling assembling bottom and valve gap screw rod and screw up, utilize jack-up dismouting iron plate structure, make bolt coupling assembling and valve gap screw rod synchronous lifting to realize the dismouting of the valve gap of stifled valve, and effectively avoid the condition that spare part popped out, the safety in utilization is good.

In foretell plug valve gap dismouting device, dismouting iron plate structure includes dismouting iron plate, and dismouting iron plate up end circumference is equipped with a plurality of lugs, and is equipped with a plurality of screw holes that can supply bolt coupling subassembly to pass on the dismouting iron plate, and dismouting iron plate bottom surface is equipped with and supplies roof pressure subassembly one end male locating hole. The setting of lug makes the valve gap more convenient in the installation.

In foretell stifled valve gap dismouting device, bolt fastening subassembly includes locking connection bolt, and locking connection bolt one end just is located dismouting iron plate upper end and is equipped with lock nut, and the locking connection bolt other end passes the screw hole and sets up at dismouting iron plate lower extreme. The locking connecting bolt is connected with the valve cover screw rod through threads, so that the supporting plate can drive the valve cover to move synchronously, and the disassembly is quickly completed.

In the device for disassembling and assembling the valve cover of the plug valve, the circumferential outer wall of the locking connecting bolt is provided with the external thread, the circumferential inner side of one end, far away from the locking nut, of the locking connecting bolt is provided with the connecting hole, and the circumferential inner side of the connecting hole is provided with the internal thread. The locking connecting bolt can be connected with the valve cover screw rod more tightly through the arrangement.

In the above device for dismounting and mounting the valve cover of the shutoff valve, the valve cover screw rod radially penetrates through the support plate, the fastening nut is sleeved on one end of the valve cover screw rod and is positioned on the upper end face of the support plate, and the bolt connecting part capable of being in threaded connection with the connecting hole is formed at one end of the fastening nut and is positioned on the upper side of the fastening nut. The arrangement of the fastening nut enables the support plate to be connected and fastened with the valve cover screw rod, and slipping is avoided.

In the above device for dismounting and mounting the valve cap of the shutoff valve, the circumferential outer wall of the bolt connecting part is provided with a connecting thread corresponding to the internal thread. The valve cover screw rod and the locking connecting bolt are connected in a threaded connection mode and are not easy to slip.

In the dismounting device for the valve cover of the plug valve, the jacking component comprises a jack, the jack is connected with an external hydraulic pump, and the upper end of the jack is inserted into the positioning hole. The arrangement of the positioning hole can prevent the phenomenon that the bearing capacity of the jack slides over.

In the dismounting device for the valve cover of the plug valve, the plug valve is circumferentially provided with the positioning grooves which are in one-to-one correspondence with the jacks, and the positioning grooves are formed in the jacks. The arrangement of the positioning groove enables one end of the jack to have a better positioning effect.

In the above device for assembling and disassembling the valve cover of the plugging valve, the diameter of the assembling and disassembling iron plate is larger than that of the plugging valve. The iron plate can be disassembled and assembled in a wider range.

In the above device for assembling and disassembling the valve cover of the plug valve, a connection gap is provided between the support plate and the valve cover.

Compared with the prior art, the utility model has the advantages of: reasonable in design, simple structure, at the in-process of dismantling the stifled valve, effectively avoided popping out of spare part, the security is good, adopts the mode of jack moreover to make the linkage of locking connection bolt pulling valve gap screw rod on the dismouting iron plate to make the valve gap of being connected with valve gap screw rod can the synchronous linkage, easy dismounting, the linkage is good.

Drawings

Fig. 1 is a sectional view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the bolt connection assembly structure of the present invention.

In the figure, a blocking valve 1, a valve cover 11, a positioning groove 12, a supporting plate 2, a valve cover screw 21, a fastening nut 22, a bolt connecting part 23, a connecting thread 24, a detachable iron plate structure 3, a detachable iron plate 31, a threaded hole 32, a positioning hole 33, a lifting lug 34, a bolt connecting assembly 4, a locking connecting bolt 41, an external thread 411, a connecting hole 412, an internal thread 413, a locking nut 42, a jacking assembly 5, a jack 51, an external hydraulic pump 52 and a connecting gap 6 are arranged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, a device for disassembling and assembling a valve cover of a plugging valve comprises a valve cover 11 arranged on the inner side of the circumferential direction of a plugging valve 1, a support plate 2 is arranged at the upper end of the valve cover 11, the support plate 2 is connected with the valve cover 11 through a valve cover screw 21, a detachable iron plate structure 3 is arranged on the upper end face of the plugging valve 1, the detachable iron plate structure 3 is detachably connected with the valve cover screw 21 through a bolt connecting component 4 radially arranged on the detachable iron plate 31, and a jacking component 5 is arranged between the detachable iron plate 31 and the circumferential direction of the plugging valve 1. When dismantling valve gap 11 on the stifled valve 1, arrange dismouting iron plate structure 3 in 1 up end of stifled valve, utilize 4 threaded connection valve gap screws 21 of bolt coupling assembling, through the jack pressure lifting dismouting iron plate structure 3 of jack pressure subassembly 5, when dismouting iron plate structure 3 rose, bolt coupling assembling pulled valve gap 11 through valve gap screws 21 and rises in step to the realization is to the dismantlement of valve gap 11.

The detachable iron plate structure 3 includes a detachable iron plate 31, a plurality of lifting lugs 34 are circumferentially disposed on an upper end surface of the detachable iron plate 31, a plurality of threaded holes 32 through which the bolt connecting assemblies 4 can pass are disposed on the detachable iron plate 31, and a positioning hole 33 through which one end of the top pressing assembly 5 can be inserted is disposed on a bottom surface of the detachable iron plate 31. The lifting lug 34 is used for connecting a steel wire rope to position the iron plate 31 for dismounting.

As can be seen, the bolt connection assembly 4 includes a locking connection bolt 41, one end of the locking connection bolt 41 and located at the upper end of the iron dismounting plate 31 is provided with a locking nut 42, and the other end of the locking connection bolt 41 passes through the threaded hole 32 and is disposed at the lower end of the iron dismounting plate 31. The lock nut 42 is used to position the lock attachment bolt 41.

Specifically, the circumferential outer wall of the locking connection bolt 41 is provided with an external thread 411, and the circumferential inner side of one end of the locking connection bolt 41 away from the locking nut 42 is provided with a connection hole 412, and the circumferential inner side of the connection hole 412 is provided with an internal thread 413.

Obviously, the bonnet screw 21 is radially inserted into the support plate 2, and a fastening nut 22 is sleeved on one end of the bonnet screw 21 and located on the upper end face of the support plate 2, and a bolt connecting portion 23 capable of being in threaded connection with the connecting hole 412 is formed at one end of the fastening nut 22 and located on the upper side of the fastening nut 22.

Further, the bolt connecting portion 23 is provided with a connecting thread 24 on the outer circumferential wall thereof, which is provided corresponding to the internal thread 413. The threaded connection mode enables the connection between the bonnet screw 21 and the locking connection bolt 41 to be more tight.

More specifically, the jacking assembly 5 comprises a jack 51, the jack 51 is connected with an external hydraulic pump 52, and the upper end of the jack 51 is inserted into the positioning hole 33.

Furthermore, the blocking valve 1 is circumferentially provided with positioning grooves 12 corresponding to the jacks 51 one by one, and the jacks 51 are arranged in the positioning grooves 12. The valve cover 11 also has a positioning groove 12 in the middle for the jack 51 to be placed during installation.

In detail, the diameter of the detachable iron plate 31 is larger than that of the flapper valve 1.

Preferably, a connecting gap 6 is provided between the support plate 2 and the valve cover 11. This arrangement prevents rigid contact between the support 2 and the valve closure 11.

In summary, the principle of the present embodiment is: during disassembly, the dismounting iron plate 31 is placed on the upper end face of the plugging valve 1 and is in contact with the jack 51, the locking nut 42 is loosened, the locking connecting bolt 41 is used for connecting the valve cover screw rod 21, namely, the bolt connecting part 23 at the upper end of the valve cover screw rod 21 is in threaded connection with the connecting hole 412 at the lower end of the locking connecting bolt 41, the locking nut 42 is screwed, at the moment, the dismounting iron plate 31 is jacked up by the jack 51, and the valve cover 11 and the supporting plate 2 are driven by the linkage of the locking connecting bolt 41 and the valve cover screw rod 21 to synchronously ascend until the valve cover 11 moves out of the plugging valve 1; when the installation is carried out, the jack 51 is arranged at the axis position of the valve cover 11, a steel wire rope penetrates into the lifting lug 34 and is connected to the outer ring of the plug valve 1 through an external chain block, at the moment, the jack 51 synchronously acts, the upper end of the jack 51 is pressed by pressing force, and the lower end of the jack 51 slowly presses the valve cover 11, so that the installation of the valve cover 11 of the plug valve 1 is realized.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the block valve 1, the valve cover 11, the positioning groove 12, the support plate 2, the valve cover screw 21, the fastening nut 22, the bolt connection portion 23, the connection thread 24, the iron plate structure 3, the iron plate 31, the threaded hole 32, the positioning hole 33, the lifting lug 34, the bolt connection assembly 4, the locking connection bolt 41, the external thread 411, the connection hole 412, the internal thread 413, the locking nut 42, the pressing assembly 5, the jack 51, the external hydraulic pump 52, the connection gap 6, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any one of the additional limitations of the present invention.

Claims

1. The utility model provides a stifled valve gap dismouting device, is including setting up valve gap (11) at stifled valve (1) circumference inboard, its characterized in that, valve gap (11) upper end be equipped with bearing plate (2), and be equipped with between bearing plate (2) and valve gap (11) and link to each other through valve gap screw rod (21), and stifled valve (1) up end is equipped with dismouting iron plate structure (3), dismouting iron plate structure (3) and valve gap screw rod (21) between through radial bolt coupling assembling (4) releasable connection on dismouting iron plate (31), dismouting iron plate (31) and stifled valve (1) circumference between be equipped with roof pressure subassembly (5).

2. The device for dismounting and mounting the valve cover of the plug valve according to claim 1, wherein the dismounting and mounting iron plate structure (3) comprises a dismounting and mounting iron plate (31), a plurality of lifting lugs (34) are circumferentially arranged on the upper end surface of the dismounting and mounting iron plate (31), a plurality of threaded holes (32) for the bolt connecting assembly (4) to pass through are formed in the dismounting and mounting iron plate (31), and a positioning hole (33) for inserting one end of the jacking assembly (5) is formed in the bottom surface of the dismounting and mounting iron plate (31).

3. The device for disassembling and assembling the valve cover of the plug valve according to claim 2, wherein the bolt connecting assembly (4) comprises a locking connecting bolt (41), one end of the locking connecting bolt (41) is provided with a locking nut (42) at the upper end of the disassembling and assembling iron plate (31), and the other end of the locking connecting bolt (41) passes through the threaded hole (32) and is arranged at the lower end of the disassembling and assembling iron plate (31).

4. The device for assembling and disassembling the valve cover of the plug valve according to claim 3, characterized in that the circumferential outer wall of the locking connecting bolt (41) is provided with an external thread (411), the circumferential inner side of one end of the locking connecting bolt (41) far away from the locking nut (42) is provided with a connecting hole (412), and the circumferential inner side of the connecting hole (412) is provided with an internal thread (413).

5. The device for assembling and disassembling the valve cover of the shutoff valve according to claim 4, characterized in that the valve cover screw (21) radially penetrates through the support plate (2), a fastening nut (22) is sleeved on one end of the valve cover screw (21) and is positioned on the upper end face of the support plate (2), and a bolt connecting part (23) capable of being in threaded connection with the connecting hole (412) is formed at one end of the fastening nut (22) and is positioned on the upper side of the fastening nut (22).

6. The device for dismounting and mounting the valve cover of the plug valve according to claim 5, wherein the circumferential outer wall of the bolt connecting part (23) is provided with a connecting thread (24) corresponding to the internal thread (413).

7. The device for dismounting and mounting the valve cover of the plug valve according to claim 2, wherein the jacking assembly (5) comprises a jack (51), the jack (51) is connected with an external hydraulic pump (52), and the upper end of the jack (51) is inserted into the positioning hole (33).

8. The device for dismounting and mounting the valve cover of the plugging valve according to claim 7, wherein the plugging valve (1) is circumferentially provided with positioning grooves (12) which are arranged in one-to-one correspondence with the jacks (51), and the jacks (51) are arranged in the positioning grooves (12).

9. The device for assembling and disassembling a valve cover of a plugging valve according to claim 2, wherein the diameter of the assembling and disassembling iron plate (31) is larger than that of the plugging valve (1).

10. The device for assembling and disassembling a valve cover of a plugging valve according to claim 9, wherein a connecting gap (6) is formed between the support plate (2) and the valve cover (11).