CN219255431U - On-line maintenance device for small-caliber forced sealing ball valve - Google Patents

Abstract

The utility model relates to the technical field of valve maintenance, in particular to an on-line maintenance device for a small-caliber forced sealing ball valve, which comprises a valve seat support ring dismounting tool and a valve seat support ring mounting tool, wherein the valve seat support ring dismounting tool comprises a first power screw and a clamping assembly, the first power screw is horizontally arranged, a first horizontal threaded hole is formed in the clamping assembly, the first power screw is arranged in the first horizontal threaded hole in a matching manner, and the clamping assembly can move left and right under the action of threads. The on-line maintenance device provided by the utility model has the advantages that the whole valve is not required to be detached from the pipeline, the valve seat support ring can be conveniently detached and installed on the pipeline, on-line maintenance is realized, and the possibility of damage to the valve seat support ring and other parts of the valve is obviously reduced in the detaching and installing process.

Description

On-line maintenance device for small-caliber forced sealing ball valve

Technical Field

The utility model relates to the technical field of valve maintenance, in particular to an on-line maintenance device for a small-caliber forced sealing ball valve.

Background

After the small-caliber forced sealing ball valve is used for a certain time, the valve seat support ring needs to be detached for maintenance or replacement. At present, the valve seat support ring is connected with the valve seat together, the dismantlement mode of valve seat support ring is for dismantling whole valve from the pipeline, use the bar copper to hit the valve seat support ring technology slot in the deep runner of downstream end flange side and knock out the valve seat support ring, because the valve seat support ring receives local point to hit, can lead to the fact the deformation because of the atress is uneven, even block in the valve body, the valve seat support ring of dismantling like this has taken place serious deformation, unable secondary use, and still can cause the serious strain of valve body seat hole, lead to whole valve to scrap, so what is urgent needs is a ball valve maintenance frock convenient to valve seat support ring dismantlement.

Disclosure of Invention

The technical problem solved by the utility model is to provide an on-line maintenance device for a small-caliber forced sealing ball valve, which is convenient for the disassembly of a valve seat supporting ring.

The technical scheme adopted for solving the technical problems is as follows: a on-line maintenance device for small-bore forced seal ball valve, including the disk seat backing ring dismantles frock, the disk seat backing ring dismantles frock and includes first power screw and joint subassembly, and first power screw is the level setting, is provided with first horizontal screw hole in the joint subassembly, and first power screw matches and sets up in first horizontal screw hole, and first power screw makes joint subassembly can control the removal under the screw thread effect.

Further, the device also comprises a first fixed supporting component, wherein the first fixed supporting component comprises a first fixed base, a first mounting seat and a first fixed limiting frame;

the shape and the size of the first fixed base are the same as those of the lower valve rod groove of the ball valve, a first connecting protrusion is arranged on the first fixed base, a first connecting groove is arranged at the bottom of the first mounting base, the first mounting base is detachably arranged on the first fixed base, and the first connecting protrusion is arranged in the first connecting groove in a matching manner;

the first fixed limiting frame is arranged on the first mounting seat, a horizontal limiting groove with an upper opening is formed in the first fixed limiting frame, and the first power screw is matched and penetrates through the horizontal limiting groove.

Further, the clamping assembly comprises a clamping main body and a clamping block, wherein a first horizontal threaded hole is formed in the middle of the clamping main body, a horizontal connecting through hole is formed in the clamping block, the clamping block is sleeved on the clamping main body through the horizontal connecting through hole, and a clamping groove is formed in the circumferential direction of the clamping block.

The clamping main body comprises a positioning sleeve, a moving sleeve and a second power screw, wherein the positioning sleeve and the moving sleeve are horizontally arranged, the positioning sleeve is sequentially provided with a first installation limiting section, a first conical table section with big left and small right and a first connecting cylindrical section from left to right, and the moving sleeve is sequentially provided with a second connecting cylindrical section, a second conical table section with big right Zuo Xiao and a second installation limiting section from left to right;

the positioning sleeve is internally provided with a first horizontal threaded hole, a screw head horizontal mounting hole and a screw horizontal through hole which are communicated in sequence from left to right, the moving sleeve is internally provided with a horizontal sliding hole and a second horizontal threaded hole which are communicated in sequence from left to right, the moving sleeve is sleeved on the first connecting cylindrical section in a matched manner through the horizontal sliding hole, the second power screw penetrates through the screw horizontal through hole and the horizontal sliding hole to be connected with the second horizontal threaded hole, the head of the second power screw is arranged in the screw head horizontal mounting hole, and the second power screw () enables the moving sleeve to move left and right along the first connecting cylindrical section under the action of threads;

the clamping block comprises at least two clamping bodies and an elastic connecting ring, the clamping bodies are arranged at intervals, the elastic connecting ring is sleeved on the clamping bodies to connect all the clamping bodies together, and the horizontal connecting through holes are sequentially formed in a first frustum hole section, a horizontal cylindrical hole section and a second frustum hole section, wherein the first frustum hole section, the horizontal cylindrical hole section and the second frustum hole section are large in right Zuo Xiao;

the frustum shape of the first frustum hole body section is the same as that of the first frustum section, the inner wall conical surface matching of the first frustum hole body section is arranged on the outer wall conical surface of the first frustum section, the inner wall conical surface of the first frustum hole body section and the outer wall conical surface of the first frustum section can move relatively, the inner wall cylindrical surface matching of the horizontal cylindrical hole body section is arranged on the outer wall cylindrical surface of the second connecting cylindrical section, the frustum shape of the second frustum hole body section is the same as that of the second frustum section, the inner wall conical surface matching of the second frustum hole body section is arranged on the outer wall conical surface of the second frustum section, and the inner wall conical surface of the second frustum hole body section and the outer wall conical surface of the second frustum section can move relatively.

Further, the first fixed limiting frame comprises a first left side plate, a first front side plate and a first rear side plate, the first front side plate and the first rear side plate are respectively connected and arranged on the front side and the rear side of the first left side plate, the first front side plate and the first rear side plate are mutually parallel, and the horizontal limiting groove is arranged on the first left side plate;

the front side surface and the rear side surface of the first installation limiting section are flat surfaces, the first installation limiting section is clamped between the first front side plate and the first rear side plate in a matching way, the inner wall surface of the first front side plate is abutted against the front side surface of the first installation limiting section, and the inner wall surface of the first rear side plate is abutted against the rear side surface of the first installation limiting section;

the clamping main body further comprises a guide limiting pin, a first horizontal guide limiting hole is formed in the positioning sleeve, a second horizontal guide limiting hole is formed in the moving sleeve, the guide limiting pin is arranged in the first horizontal guide limiting hole and the second horizontal guide limiting hole in a matching mode, and relative movement can be generated between the guide limiting pin and the first horizontal guide limiting hole.

Further, the bottom surface of joint groove is provided with the spacing groove, and the elastic connection circle matches and sets up in the spacing groove.

Further, the valve seat support ring mounting fixture comprises a second fixed support assembly, a third power screw and a push plate, wherein the second fixed support assembly comprises a second fixed base, a second mounting seat and a second fixed limiting frame;

the shape and the size of the second fixed base are the same as those of the lower valve rod groove of the ball valve, a second connecting protrusion is arranged on the second fixed base, a second connecting groove is arranged at the bottom of the second mounting base, the second mounting base is detachably arranged on the second fixed base, and the second connecting protrusion is arranged in the second connecting groove in a matching way;

the second fixed limiting frame is arranged on the second mounting seat, a third horizontal threaded hole is formed in the second fixed limiting frame, the third power screw is horizontally arranged, the third power screw is arranged in the third horizontal threaded hole in a matching mode, and the push plate can move rightwards under the action of threads.

Further, the push plate is sequentially provided with a large-diameter horizontal cylindrical section and a small-diameter horizontal connecting cylindrical section from left to right, and the small-diameter horizontal connecting cylindrical section is arranged in the middle of the large-diameter horizontal cylindrical section in a matching manner.

Further, the second fixed limiting frame comprises a second left side plate, a second front side plate and a second rear side plate, the second front side plate and the second rear side plate are respectively connected and arranged on the front side and the rear side of the second left side plate, and the second front side plate and the second rear side plate are mutually parallel.

The beneficial effects of the utility model are as follows: the utility model discloses an on-line maintenance device for a small-caliber forced sealing ball valve, which comprises a valve seat support ring dismounting tool, wherein the valve seat support ring dismounting tool comprises a first power screw and a clamping assembly, the first power screw is horizontally arranged, a first horizontal threaded hole is formed in the clamping assembly, the first power screw is arranged in the first horizontal threaded hole in a matching manner, and the clamping assembly can move left and right under the action of threads.

When dismantling the disk seat support circle, at first with whole disk seat support circle dismantlement frock installation fixed in the valve body, joint subassembly is connected with the disk seat support circle, then rotatory first power screw makes joint subassembly drive the disk seat support circle to the direction removal of keeping away from disk seat support circle mounted position to pull out the disk seat support circle, accomplish disk seat support circle dismantlement work.

And when the valve seat support ring is installed, the whole valve seat support ring installation tool is firstly installed and fixed in the valve body, then the maintained or new valve seat support ring is initially installed on the valve body, and then the third power screw is rotated, so that the push plate drives the valve seat support ring to move towards the direction close to the installation position of the valve seat support ring, and the valve seat support ring is pushed to the installation position of the valve seat support ring, thereby completing the installation work of the valve seat support ring.

Therefore, the on-line maintenance device provided by the utility model has the advantages that the whole valve is not required to be detached from the pipeline, the valve seat support ring can be conveniently detached and installed on the pipeline, on-line maintenance is realized, and the possibility of damage to the valve seat support ring and other parts of the valve is obviously reduced in the detaching and installing process.

Drawings

FIG. 1 is a schematic structural view of a valve seat support ring disassembly tool;

FIG. 2 is a schematic front view of a valve seat support ring removal tool of the present utility model;

FIG. 3 is a schematic top view of a valve seat support ring disassembly tool employing the valve seat support ring disassembly tool of the present utility model;

FIG. 4 is a schematic view of the structure of the positioning sleeve;

FIG. 5 is a schematic front view of a spacer sleeve;

FIG. 6 is a schematic view of the structure of the mobile sleeve;

FIG. 7 is a schematic front view of a mobile sleeve;

FIG. 8 is a schematic view of the structure of the snap block;

FIG. 9 is a schematic front view of a snap block;

FIG. 10 is a schematic view of the structure of the first fixed stop frame;

FIG. 11 is a schematic structural view of a valve seat support ring installation tooling;

FIG. 12 is a schematic front view of a valve seat support ring installation tool of the present utility model;

FIG. 13 is a schematic structural view of a second fixed stop frame;

FIG. 14 is a schematic view of the construction of the push plate;

the marking is as follows: first power screw 1, clamping assembly 2, first horizontal threaded hole 21, clamping body 22, positioning sleeve 221, first installation limit segment 2211, first frustum segment 2212, first connection cylindrical segment 2213, screw horizontal through hole 2214, screw head horizontal installation hole 2215, first horizontal guiding limit hole 2216, moving sleeve 222, second connection cylindrical segment 2221, second frustum segment 2222, second installation limit segment 2223, horizontal slide hole 2224, second horizontal threaded hole 2225, second horizontal guiding limit hole 2226, second power screw 223, guiding limit pin 224, clamping block 23, horizontal connection through hole 231, first frustum hole segment 2311, horizontal cylindrical hole segment 2312, second frustum hole segment 2313 the clamping groove 232, the clamping body 233, the elastic connecting ring 234, the limiting groove 235, the first fixed supporting component 3, the first fixed base 31, the first mounting seat 32, the first fixed limiting frame 33, the horizontal limiting groove 331, the first left side plate 332, the first front side plate 333, the first rear side plate 334, the first connecting protrusion 34, the second fixed supporting component 4, the second fixed base 41, the second mounting seat 42, the second fixed limiting frame 43, the third horizontal threaded hole 431, the second front side plate 432, the second rear side plate 433, the second left side plate 434, the second connecting protrusion 44, the third power screw 5, the push plate 6, the large-diameter horizontal cylindrical section 61, the small-diameter horizontal connecting cylindrical section 62, the valve body 7 and the valve seat supporting ring 8.

Detailed Description

The utility model is further described below with reference to the drawings and the detailed description.

The component orientations of the valve seat support ring disassembly tool referred to below are based on the major orientations of the components of the valve seat support ring disassembly tool in fig. 2, and the component orientations of the valve seat support ring installation tool referred to below are based on the major orientations of the components of the valve seat support ring installation tool in fig. 12.

As shown in fig. 1 to 10, the on-line maintenance device for the small-caliber forced sealing ball valve comprises a valve seat support ring dismounting tool, wherein the valve seat support ring dismounting tool comprises a first power screw 1 and a clamping assembly 2, the first power screw 1 is horizontally arranged, a first horizontal threaded hole 21 is formed in the clamping assembly 2, the first power screw 1 is arranged in the first horizontal threaded hole 21 in a matching manner, and the clamping assembly 2 can move left and right under the action of threads by the first power screw 1. The joint subassembly 2 moves to the right and means to being close to valve seat support circle 8 mounted position direction, and joint subassembly 2 moves to the left and means to being away from valve seat support circle 8 mounted position direction, and the valve seat support circle dismantles the frock and is used for dismantling valve seat support circle 8, so only needs first power screw 1 to make joint subassembly 2 move left under the screw thread effect can.

As shown in fig. 2 and 3, when the valve seat support ring 8 is dismounted, the whole valve seat support ring dismounting tool is firstly mounted and fixed in the valve body 7, so that the clamping assembly 2 is connected with the valve seat support ring 8, and then the first power screw 1 is rotated, so that the clamping assembly 2 drives the valve seat support ring 8 to move in a direction away from the mounting position of the valve seat support ring 8 (in the arrow direction in fig. 2), thereby pulling out the valve seat support ring 8, and completing the valve seat support ring 8 dismounting work.

Specifically, in order to improve stability of the valve seat support ring 8 during disassembly, as shown in fig. 1, 2 and 3, the utility model further provides a first fixed support assembly 3, wherein the first fixed support assembly 3 comprises a first fixed base 31, a first mounting seat 32 and a first fixed limit frame 33, the shape and the size of the first fixed base 31 are the same as those of a lower valve rod groove of a ball valve, a first connecting protrusion 34 is arranged on the first fixed base 31, a first connecting groove is arranged at the bottom of the first mounting seat 32, the first mounting seat 32 is detachably arranged on the first fixed base 31, the first connecting protrusion 34 is arranged in the first connecting groove in a matching manner, the first fixed limit frame 33 is arranged on the first mounting seat 32, a horizontal limit groove 331 with an upper opening is arranged on the first fixed limit frame 33, and the first power screw 1 is arranged in a matching manner through the horizontal limit groove 331. When the valve seat support ring 8 is disassembled, the first fixing base 31 is matched and arranged in the lower valve rod groove. The whole fixed support assembly is guaranteed to first unable adjustment base 31, first mount pad 32 have sufficient intensity, and first unable adjustment base 31, first mount pad 32 are connected through the mode of first connecting protrusion 34, first connection recess, make things convenient for both to install and dismantle. In order to ensure that the valve seat support ring 8 can be detached, the center line of the first power screw 1 and the center line of the valve seat support ring 8 are preferably on the same horizontal line, the first fixed limiting frame 33 ensures the height of the first power screw 1, the center line of the first power screw 1 and the center line of the valve seat support ring 8 are on the same horizontal line under the action of the horizontal limiting groove 331, and the first power screw 1 cannot deviate front and back when rotating, so that the stability of the valve seat support ring 8 when being detached is ensured. In order to further increase the stability, the first fixing base 31 and the valve body 7 may also be connected together by a screw connection.

As shown in fig. 2 and 3, the valve seat supporting ring 8 is hollow ring-shaped, and the clamping assembly 2 is in clamping connection with the valve seat supporting ring 8 during disassembly, and the preferred structure of the clamping assembly 2 is as follows: the clamping assembly 2 comprises a clamping main body 22 and a clamping block 23, wherein a first horizontal threaded hole 21 is formed in the middle of the clamping main body 22, a horizontal connecting through hole 231 is formed in the clamping block 23, the clamping block 23 is sleeved on the clamping main body 22 through the horizontal connecting through hole 231, and a clamping groove 232 is formed in the circumferential direction of the clamping block 23. When the valve seat support ring 8 is disassembled, the clamping main body 22 is just clamped in the valve body 7, and the clamping groove 232 is just connected with the valve seat support ring 8 in a clamping way.

As shown in fig. 2 and 3, the inner wall of the valve seat supporting ring 8 is in a frustum shape, a cylindrical shape and a frustum shape in sequence from left to right, the conicity of the two frustum shapes is 45 degrees, and the inner space of the valve body 7 of the small-caliber forced sealing ball valve is small, so that the installation of the clamping assembly 2 and the clamping of the valve seat supporting ring 8 are inconvenient. The inventor has found through a great deal of practice that a preferred structure of the clamping assembly 2 of the present utility model is: as shown in fig. 1 to 9, the clamping main body 22 includes a positioning sleeve 221, a moving sleeve 222 and a second power screw 223, wherein the positioning sleeve 221 and the moving sleeve 222 are horizontally arranged, the positioning sleeve 221 sequentially comprises a first installation limiting section 2211, a first frustum section 2212 with a large left side and a small right side, and a first connection cylindrical section 2213 from left to right, and the moving sleeve 222 sequentially comprises a second connection cylindrical section 2221, a second frustum section 2222 with a small left side and a large right side, and a second installation limiting section 2223 from left to right;

the positioning sleeve 221 is sequentially provided with a first horizontal threaded hole 21, a screw head horizontal mounting hole 2215 and a screw horizontal through hole 2214 which are communicated from left to right, the moving sleeve 222 is sequentially provided with a horizontal sliding hole 2224 and a second horizontal threaded hole 2225 which are communicated from left to right, the moving sleeve 222 is matched and arranged on the first connecting cylindrical section 2213 through the horizontal sliding hole 2224, the second power screw 223 penetrates through the screw horizontal through hole 2214 and the horizontal sliding hole 2224 to be connected with the second horizontal threaded hole 2225, the head of the second power screw 223 is arranged in the screw head horizontal mounting hole 2215, and the second power screw 223 enables the moving sleeve 222 to move left and right along the first connecting cylindrical section 2213 under the action of threads;

the clamping block 23 comprises at least two clamping bodies 233 and elastic connecting rings 234, the clamping bodies 233 are arranged at intervals, the elastic connecting rings 234 are sleeved on the clamping bodies 233 to connect all the clamping bodies 233 together, and the horizontal connecting through holes 231 are sequentially formed from left to right in a first frustum hole section 2311, a horizontal cylindrical hole section 2312 and a second frustum hole section 2313 which are small left and right;

the frustum shape of the first frustum hole body section 2311 is the same as the frustum shape of the first frustum section 2212, the inner wall conical surface matching of the first frustum hole body section 2311 is arranged on the outer wall conical surface of the first frustum section 2212 in a matched mode, the inner wall conical surface of the first frustum hole body section 2311 and the outer wall conical surface of the first frustum section 2212 can move relatively, the inner wall cylindrical surface matching of the horizontal cylindrical hole body section 2312 is arranged on the outer wall cylindrical surface of the second connection cylindrical section 2221, the frustum shape of the second frustum hole body section 2313 is the same as the frustum shape of the second frustum section 2222, the inner wall conical surface matching of the second frustum hole body section 2313 is arranged on the outer wall conical surface of the second frustum section 2222 in a matched mode, and the inner wall conical surface of the second frustum hole body section 2313 and the outer wall conical surface of the second frustum section 2222 can move relatively, so that the clamping groove 232 is formed. When the clamping assembly 2 is installed, the clamping assembly 2 is assembled firstly, then the second installation limiting section 2223 of the movable sleeve 222 is installed at the corresponding position of the valve body 7, the second installation limiting section 2223 is just clamped in the valve body 7, the second installation limiting section 2223 can move left and right, finally the second power screw 223 is rotated, the movable sleeve 222 moves leftwards along the first connecting cylindrical section 2213, the movable sleeve 222 moves leftwards, the first frustum hole body section 2311 moves leftwards and upwards along the frustum surface of the first frustum section 2212, the clamping block 23 moves leftwards and upwards, the clamping groove 232 is connected with the valve seat support ring 8, and the inner wall of the valve seat support ring 8 is just clamped in the clamping groove 232. In order to ensure the use effect, the taper angles related to the frustum shape are all 45 degrees. To facilitate rotation of the second power screw 223, the second power screw 223 is preferably a socket head cap screw.

In order to ensure the use effect of the clamping assembly 2, the moving sleeve 222 only moves leftwards and does not rotate around the center thereof, and as shown in fig. 2 and 3, the first fixed limiting frame 33 of the present utility model comprises a first left side plate 332, a first front side plate 333 and a first rear side plate 334, the first front side plate 333 and the first rear side plate 334 are respectively connected and arranged on the front side and the rear side of the first left side plate 332, the first front side plate 333 and the first rear side plate 334 are mutually parallel, and the horizontal limiting groove 331 is arranged on the first left side plate 332;

the front side surface and the rear side surface of the first installation limiting section 2211 are flat surfaces, the first installation limiting section 2211 is clamped between the first front side plate 333 and the first rear side plate 334 in a matching manner, the inner wall surface of the first front side plate 333 is abutted against the front side surface of the first installation limiting section 2211, and the inner wall surface of the first rear side plate 334 is abutted against the rear side surface of the first installation limiting section 2211;

the clamping main body 22 further comprises a guiding limiting pin 224, a first horizontal guiding limiting hole 2216 is formed in the positioning sleeve 221, a second horizontal guiding limiting hole 2226 is formed in the moving sleeve 222, the guiding limiting pin 224 is arranged in the first horizontal guiding limiting hole 2216 and the second horizontal guiding limiting hole 2226 in a matching mode, and relative movement can be generated between the guiding limiting pin 224 and the first horizontal guiding limiting hole 2216. Because the first installation limiting segment 2211 is clamped between the first front side plate 333 and the first rear side plate 334 in a matching manner, the first installation limiting segment 2211 is limited and cannot generate rotary motion, that is, the positioning sleeve 221 cannot generate rotary motion, and the moving sleeve 222 cannot generate rotary motion under the action of the guiding limiting pin 224, the first horizontal guiding limiting hole 2216 and the second horizontal guiding limiting hole 2226. In order to improve the limiting effect, the number of the guide limiting pins 224, the first horizontal guide limiting holes 2216, and the second horizontal guide limiting holes 2226 may be set to be plural according to actual situations.

In order to improve the installation and use effects of the elastic connection ring 234, a limiting groove 235 is formed in the bottom surface of the clamping groove 232, and the elastic connection ring 234 is arranged in the limiting groove 235 in a matching manner.

Because the second power screw 223 needs to be rotated to connect the clamping assembly 2 with the valve seat supporting ring 8, the first power screw 1 needs to be installed on the clamping assembly 2 after the clamping assembly 2 is installed in place and the clamping assembly 2 is connected with the valve seat supporting ring 8.

In order to facilitate the installation of the maintained or new valve seat support ring 8 on the connecting support seat, as shown in fig. 11 to 14, the utility model is further provided with a valve seat support ring installation tool, wherein the valve seat support ring installation tool comprises a second fixed support assembly 4, a third power screw 5 and a push plate 6, and the second fixed support assembly 4 comprises a second fixed base 41, a second installation seat 42 and a second fixed limiting frame 43;

the shape and the size of the second fixed base 41 are the same as those of the lower valve rod groove of the ball valve, a second connecting protrusion 44 is arranged on the second fixed base 41, a second connecting groove is arranged at the bottom of the second mounting seat 42, the second mounting seat 42 is detachably arranged on the second fixed base 41, and the second connecting protrusion 44 is matched and arranged in the second connecting groove;

the second fixed limiting frame 43 is arranged on the second mounting seat 42, a third horizontal threaded hole 431 is formed in the second fixed limiting frame 43, the third power screw 5 is horizontally arranged, the third power screw 5 is arranged in the third horizontal threaded hole 431 in a matching mode, the push plate 6 can move rightwards under the action of threads through the third power screw 5, and the rightwards movement means movement towards the direction close to the mounting position of the valve seat support ring 8.

When the valve seat support ring 8 is installed, firstly, the whole valve seat support ring 8 installation tool is installed and fixed in the valve body 7, then the maintained or new valve seat support ring 8 is initially installed on the valve body 7, and then the third power screw 5 is rotated, so that the push plate 6 drives the valve seat support ring 8 to move towards the direction close to the installation position of the valve seat support ring 8 (the arrow direction in fig. 12), and the valve seat support ring 8 is pushed to the installation position of the valve seat support ring 8, so that the installation work of the valve seat support ring 8 is completed.

The second fixing base 41 is fitted in the lower stem groove when the valve seat support ring 8 is installed. The second unable adjustment base 41, second mount pad 42 guarantee that whole fixed support subassembly has sufficient intensity, and second unable adjustment base 41, second mount pad 42 are connected through the mode of second connection protruding 44, second connection recess, make things convenient for both to install and dismantle. For convenience of use, the second fixing base 41 and the first fixing base 31 and the second mounting base 42 and the first mounting base 32 may be identical in structure and may be replaced with each other.

In order to facilitate the use of the push plate 6 and improve the use effect of the push plate 6, the push plate 6 is sequentially provided with a large-diameter horizontal cylindrical section 61 and a small-diameter horizontal connecting cylindrical section 62 from left to right, and the small-diameter horizontal connecting cylindrical section 62 is arranged in the middle of the large-diameter horizontal cylindrical section 61 in a matching manner.

In order to improve the strength and the use effect of the second fixed limiting frame 43, the second fixed limiting frame 43 includes a second left side plate 434, a second front side plate 432, and a second rear side plate 433, the second front side plate 432 and the second rear side plate 433 are respectively connected and disposed on the front and rear sides of the second left side plate 434, and the second front side plate 432 and the second rear side plate 433 are disposed parallel to each other.

In summary, the on-line maintenance device of the utility model does not need to detach the whole valve from the pipeline, is convenient for detaching and installing the valve seat support ring 8 on the pipeline, realizes on-line maintenance, and remarkably reduces the possibility of damaging the valve seat support ring 8 and other parts of the valve in the detaching and installing process.

Claims (9)

1. A on-line maintenance device for small-bore forced seal ball valve, its characterized in that: including the valve seat backing ring dismantles frock, the valve seat backing ring dismantles frock and includes first power screw (1) and joint subassembly (2), and first power screw (1) are the level setting, are provided with first horizontal screw hole (21) in joint subassembly (2), and first power screw (1) match and set up in first horizontal screw hole (21), and first power screw (1) make joint subassembly (2) can control the removal under the screw thread effect.

2. The on-line maintenance device for a small-caliber forced seal ball valve as claimed in claim 1 wherein: the device further comprises a first fixed supporting component (3), wherein the first fixed supporting component (3) comprises a first fixed base (31), a first mounting seat (32) and a first fixed limiting frame (33);

the shape and the size of the first fixed base (31) are the same as those of the lower valve rod groove of the ball valve, a first connecting protrusion (34) is arranged on the first fixed base (31), a first connecting groove is formed in the bottom of the first mounting base (32), the first mounting base (32) is detachably arranged on the first fixed base (31), and the first connecting protrusion (34) is arranged in the first connecting groove in a matching mode;

the first fixed limiting frame (33) is arranged on the first mounting seat (32), a horizontal limiting groove (331) with an upper opening is formed in the first fixed limiting frame (33), and the first power screw (1) penetrates through the horizontal limiting groove (331) in a matching mode.

3. The on-line maintenance device for a small-caliber forced seal ball valve as claimed in claim 2 wherein: the clamping assembly (2) comprises a clamping main body (22) and a clamping block (23), wherein a first horizontal threaded hole (21) is formed in the middle of the clamping main body (22), a horizontal connecting through hole (231) is formed in the clamping block (23), the clamping block (23) is sleeved on the clamping main body (22) through the horizontal connecting through hole (231), and a clamping groove (232) is formed in the circumferential direction of the clamping block (23).

4. The on-line maintenance device for a small-caliber forced seal ball valve as claimed in claim 3 wherein: the clamping main body (22) comprises a positioning sleeve (221), a moving sleeve (222) and a second power screw (223), wherein the positioning sleeve (221) and the moving sleeve (222) are horizontally arranged, the positioning sleeve (221) comprises a first installation limiting section (2211), a first conical table section (2212) with a large left side and a small right side and a first connecting cylindrical section (2213) in sequence from left to right, and the moving sleeve (222) comprises a second connecting cylindrical section (2221), a second conical table section (2222) with a small left side and a large right side and a second installation limiting section (2223) in sequence from left to right;

a first horizontal threaded hole (21), a screw head horizontal mounting hole (2215) and a screw horizontal through hole (2214) which are communicated are sequentially arranged in the positioning sleeve (221) from left to right, a horizontal sliding hole (2224) and a second horizontal threaded hole (2225) which are communicated are sequentially arranged in the moving sleeve (222) from left to right, the moving sleeve (222) is matched and sleeved on the first connecting cylindrical section (2213) through the horizontal sliding hole (2224), the second power screw (223) penetrates through the screw horizontal through hole (2214), the horizontal sliding hole (2224) is connected with the second horizontal threaded hole (2225), the head of the second power screw (223) is arranged in the screw head horizontal mounting hole (2215), and the second power screw (223) enables the moving sleeve (222) to move left and right along the first connecting cylindrical section (2213) under the action of threads;

the clamping block (23) comprises at least two clamping bodies (233) and elastic connecting rings (234), the clamping bodies (233) are arranged at intervals, the elastic connecting rings (234) are sleeved on the clamping bodies (233) to connect all the clamping bodies (233) together, and the horizontal connecting through holes (231) are sequentially formed in a first frustum hole section (2311), a horizontal cylindrical hole section (2312) and a second frustum hole section (2313) which are large left and right from left to right;

the frustum shape of the first frustum hole body section (2311) is the same as that of the first frustum section (2212), the inner wall conical surface matching of the first frustum hole body section (2311) is arranged on the outer wall conical surface of the first frustum section (2212), the inner wall conical surface of the first frustum hole body section (2311) and the outer wall conical surface of the first frustum section (2212) can generate relative movement, the inner wall cylindrical surface matching of the horizontal cylindrical hole body section (2312) is arranged on the outer wall cylindrical surface of the second connection cylindrical section (2221), the frustum shape of the second frustum hole body section (2313) is the same as that of the second frustum section (2222), the inner wall conical surface matching of the second frustum hole body section (2313) is arranged on the outer wall conical surface of the second frustum section (2222), and the inner wall conical surface matching of the second frustum hole body section (2313) and the outer wall conical surface of the second frustum section (2222) can generate relative movement.

5. The on-line maintenance device for a small-caliber forced seal ball valve as claimed in claim 4 wherein: the first fixed limiting frame (33) comprises a first left side plate (332), a first front side plate (333) and a first rear side plate (334), the first front side plate (333) and the first rear side plate (334) are respectively connected and arranged on the front side and the rear side of the first left side plate (332), the first front side plate (333) and the first rear side plate (334) are mutually parallel, and the horizontal limiting groove (331) is arranged on the first left side plate (332);

the front side surface and the rear side surface of the first installation limiting section (2211) are flat surfaces, the first installation limiting section (2211) is clamped between the first front side plate (333) and the first rear side plate (334) in a matching mode, the inner wall surface of the first front side plate (333) is abutted against the front side surface of the first installation limiting section (2211), and the inner wall surface of the first rear side plate (334) is abutted against the rear side surface of the first installation limiting section (2211);

the clamping main body (22) further comprises a guide limiting pin (224), a first horizontal guide limiting hole (2216) is formed in the positioning sleeve (221), a second horizontal guide limiting hole (2226) is formed in the moving sleeve (222), the guide limiting pin (224) is arranged in the first horizontal guide limiting hole (2216) and the second horizontal guide limiting hole (2226) in a matching mode, and relative movement can be generated between the guide limiting pin (224) and the first horizontal guide limiting hole (2216).

6. The on-line maintenance device for a small-caliber forced seal ball valve as claimed in claim 3 wherein: the bottom surface of joint groove (232) is provided with spacing groove (235), and elastic connection circle (234) match setting is in spacing groove (235).

7. The on-line maintenance device for a small-caliber forced seal ball valve according to any one of claims 1 to 6, wherein: the valve seat support ring mounting tool comprises a second fixed support assembly (4), a third power screw (5) and a push plate (6), wherein the second fixed support assembly (4) comprises a second fixed base (41), a second mounting seat (42) and a second fixed limiting frame (43);

the shape and the size of the second fixed base (41) are the same as those of the lower valve rod groove of the ball valve, a second connecting protrusion (44) is arranged on the second fixed base (41), a second connecting groove is arranged at the bottom of the second mounting base (42), the second mounting base (42) is detachably arranged on the second fixed base (41), and the second connecting protrusion (44) is matched and arranged in the second connecting groove;

the second fixed limiting frame (43) is arranged on the second mounting seat (42), a third horizontal threaded hole (431) is formed in the second fixed limiting frame (43), the third power screw (5) is horizontally arranged, the third power screw (5) is arranged in the third horizontal threaded hole (431) in a matching mode, and the third power screw (5) enables the push plate (6) to move rightwards under the action of threads.

8. The on-line maintenance device for a small-caliber forced seal ball valve as claimed in claim 7 wherein: the push plate (6) is sequentially provided with a large-diameter horizontal cylindrical section (61) and a small-diameter horizontal connecting cylindrical section (62) from left to right, and the small-diameter horizontal connecting cylindrical section (62) is arranged in the middle of the large-diameter horizontal cylindrical section (61) in a matching manner.

9. The on-line maintenance device for a small-caliber forced seal ball valve as claimed in claim 7 wherein: the second fixed limiting frame (43) comprises a second left side plate (434), a second front side plate (432) and a second rear side plate (433), the second front side plate (432) and the second rear side plate (433) are respectively connected and arranged on the front side and the rear side of the second left side plate (434), and the second front side plate (432) and the second rear side plate (433) are mutually parallel.

Images