CN116221447B - High-sealing ball valve - Google Patents
High-sealing ball valve Download PDFInfo
- Publication number
- CN116221447B CN116221447B CN202310247014.2A CN202310247014A CN116221447B CN 116221447 B CN116221447 B CN 116221447B CN 202310247014 A CN202310247014 A CN 202310247014A CN 116221447 B CN116221447 B CN 116221447B
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- China
- Prior art keywords
- valve
- sealing
- ring
- sealing ring
- ball
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- 238000007789 sealing Methods 0.000 title claims abstract description 150
- 238000009434 installation Methods 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 210000001503 joint Anatomy 0.000 claims 2
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 238000012856 packing Methods 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 5
- 239000003949 liquefied natural gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
- F16K5/202—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug with conical surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The application relates to a high-sealing ball valve, which relates to the technical field of ball valves and comprises a valve body and a valve cover, wherein the valve cover is provided with a valve rod and an operation assembly, the lower end of the valve rod penetrates through the valve cover to be connected with a valve ball, a valve seat is arranged in the valve body, and an installation cavity for inserting the valve seat back to the end part of the valve ball is arranged in the valve body; the valve body is internally provided with a sealing assembly, the sealing assembly comprises a fixed sleeve and a first sealing ring, the fixed sleeve is fixedly sleeved on the outer side face of the valve seat, one side, opposite to the valve ball, of the first sealing ring is fixedly connected with the fixed sleeve, the sealing assembly further comprises an elastic piece in a compressed state, one side of the elastic piece is abutted to the inner wall of the valve body, and the other side of the elastic piece is abutted to the side face of the fixed sleeve. The arrangement of the sealing assembly and the protection assembly not only reduces the possibility of environmental pollution, but also reduces the replacement frequency of the first sealing ring and the second sealing ring, and is more environment-friendly and energy-saving.
Description
Technical Field
The application relates to the technical field of ball valves, in particular to a high-sealing ball valve.
Background
The ball valve opening and closing piece (ball) is driven by the valve seat and rotates around the axis of the ball valve, and the valve can also be used for adjusting and controlling the fluid; LNG is short for liquefied natural gas, the main component is methane, gaseous natural gas is condensed into liquid when cooled to-162 ℃ under normal pressure, storage and transportation space and cost can be greatly saved after the natural gas is liquefied, and more ball valves are needed to control in the natural gas liquefaction process.
In the related art, the ball valve comprises a valve body, wherein a valve cover is arranged on an upper cover of the valve body, a hand wheel and a valve rod inserted into the valve cover are arranged on the valve cover, the valve cover is fixedly connected with the valve body through bolts, a valve ball is connected to the end part of the valve rod inserted into the valve cover, a valve seat for limiting the valve ball is arranged in the valve body, and the sealing between the valve seat and the valve ball adopts single rigid sealing.
However, in the process of transporting the liquefied natural gas, since the ball valve is applied to the low-temperature environment of-162 ℃, the rigid sealing element is very easy to be affected by low temperature, and certain deformation can be generated in the process of using the ball valve, so that the sealing of the ball valve is unreliable, and the risk of leakage of the natural gas in the process of transportation can occur.
Disclosure of Invention
The application aims to provide a high-sealing ball valve, which solves the problem that a sealing ring for transporting natural gas in a low-temperature environment of the ball valve in the related art is poor.
The application provides a high-sealing ball valve which adopts the following technical scheme:
the high-sealing ball valve comprises a valve body and a valve cover, wherein the valve cover is provided with a valve rod and an operation assembly, the lower end of the valve rod penetrates through the valve cover to be connected with a valve ball, a valve seat for limiting the valve ball is arranged in the valve body, and an installation cavity for inserting the end part of the valve seat, which is opposite to the valve ball, is arranged in the valve body; the valve body is internally provided with a sealing assembly, the sealing assembly comprises a fixed sleeve and a first sealing ring, the fixed sleeve is fixedly sleeved on the outer side face of the valve seat, the side face, close to the valve ball, of the first sealing ring is an arc-shaped side face, one side, opposite to the valve ball, of the first sealing ring is fixedly connected with the side face of the fixed sleeve, the sealing assembly further comprises an elastic piece in a compressed state, one side of the elastic piece is abutted to the inner wall of the valve body, and the other side of the elastic piece is abutted to the side face, opposite to the first sealing ring, of the fixed sleeve.
Through adopting above-mentioned technical scheme, in ball valve use, through seal assembly's setting, the elastic component applys pretightning force to fixed cover, compression state's elastic component backward extrusion fixed cover, extrusion and fixed cover fixed connection's first sealing washer simultaneously, make the arc side of first sealing washer all the time with the lateral surface butt of valve ball, even fine wearing and tearing appear in first sealing washer, also can paste tightly with the lateral surface of valve ball again under the extrusion of first sealing washer, can enough improve the sealing performance between valve ball and the disk seat, also reduced the change number of times of first sealing washer, more save material.
Optionally, the elastic component includes retainer plate and a plurality of spring, set up the standing groove that supplies the spring to put into on the retainer plate, the tip and the bottom side fixed connection of standing groove of spring, the outside that the standing groove was extended to the spring has a part, the one end that the spring extended to the standing groove outside and the inner wall butt of valve body, one side and the side butt of fixed cover dorsad first sealing washer of retainer plate dorsad spring.
Through adopting above-mentioned technical scheme, inside the standing groove on spring mounting and the retainer plate, and the outside that the standing groove was extended to the spring has a part, after the retainer plate is installed, the spring direction extrusion fixed cover that is in compressed state makes the arc side of first sealing washer keep closely the butt with the lateral surface of valve ball, improves the sealing performance of this ball valve.
Optionally, the side that the retainer plate is close to the fixed cover is equipped with annular sand grip, set up on the fixed cover and supply annular sand grip male annular groove.
Through adopting above-mentioned technical scheme, at the equipment in-process of retainer plate and fixed cover, the annular sand grip on the retainer plate inserts the annular groove on the fixed cover inside, reduces the possibility that appears becoming flexible or misplacement between retainer plate and the fixed cover, improves the stability of assembling of retainer plate and fixed cover.
Optionally, the outside cover of retainer plate is equipped with the protection subassembly, the protection subassembly includes looks vertically baffle and deflector, extend the spring in the standing groove outside and the medial surface butt of baffle, the deflector cover is located the outer peripheral face of retainer plate and is connected with the outer peripheral face sliding of retainer plate.
Through adopting above-mentioned technical scheme, extend the medial surface butt of the spring and the baffle in the standing groove outside, the guide plate cover locate the outer peripheral face of retainer plate and with the outer peripheral face sliding connection of retainer plate, after the equipment finishes, through the setting of protective component, make the inner wall of valve body receive the extrusion force of spring more even, also avoid the spring to the damage that the valve body inner wall was contradicted because of lasting extrusion simultaneously.
Optionally, the medial surface of deflector is equipped with a plurality of gibs, the lateral surface of retainer plate is equipped with the guide way that supplies gib to insert and slide.
Through adopting above-mentioned technical scheme, in the equipment in-process of retainer plate and protection subassembly, the guide bar of deflector medial surface inserts the guide way inside of retainer plate lateral surface, improves the stability of the equipment of retainer plate and protection subassembly.
Optionally, the inside of valve body has seted up and has supplied disk seat male first annular, the outer peripheral face of disk seat is equipped with annular ladder groove, the inner wall in annular ladder groove and the inner wall butt of first annular, seal assembly is still including the second sealing washer of cover locating annular ladder groove outer peripheral face, one side of second sealing washer and the junction butt of annular ladder groove and first annular.
By adopting the technical scheme, in the process of installing the valve seat in the valve body, the assembly stability between the inner wall of the valve body and the valve seat is improved through the matching arrangement of the first annular groove and the annular stepped groove; meanwhile, a space for installing the second sealing ring is reserved, so that one side of the second sealing ring is abutted against the joint of the annular step groove and the first annular groove, and the sealing performance of the joint of the annular step groove and the first annular groove is improved.
Optionally, the baffle plate is perpendicular fixedly connected with is to spacing collar of retainer plate spacing, be equipped with inwards turn-ups on the spacing collar, the side and the turn-ups butt of second sealing washer back to first annular.
Through adopting above-mentioned technical scheme, be equipped with inwards turn-ups on the spacing ring, the side and the turn-ups butt of second sealing washer dorsad first annular to this is spacing to the second sealing washer of annular ladder groove outer peripheral face is located to the cover, improves the sealing stability of second sealing washer.
Optionally, the seal assembly still includes a plurality of extensible members that are located between second sealing washer and the turn-ups, and extensible member one end and the inner wall fixed connection of turn-ups that is in compression state, the other end and the side butt of second sealing washer of extensible member.
Through adopting above-mentioned technical scheme, compression state's extensible member extrusion second sealing washer, continuously exert the extrusion force to the second sealing washer, make the second sealing washer all the time to the junction butt of annular step groove and first annular, improve the sealing performance of the junction of annular step groove and first annular.
Optionally, the extensible member is the pressure spring, be equipped with the embedded fixed column of pressure spring tip on the inner wall of turn-ups, the medial surface and the lateral surface interference fit of fixed column of pressure spring tip.
Through adopting above-mentioned technical scheme, the extensible member is the pressure spring, through the setting of fixed column, inlays the one end of pressure spring and establishes the outer peripheral face at the fixed column, is convenient for install the pressure spring on the inner wall of turn-ups, improves the installation effectiveness of pressure spring.
Optionally, the side of the fixed sleeve, which is close to the first sealing ring, is provided with a plurality of positioning blocks, and the first sealing ring is provided with positioning grooves for the positioning blocks to insert.
Through adopting above-mentioned technical scheme, insert the constant head tank inside on the first sealing washer with the locating piece on the fixed cover to this equipment that realizes fixed cover and first sealing washer improves the stability of the equipment of fixed cover and first sealing washer.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through seal assembly's setting, in ball valve use, the elastic component applys pretightning force to fixed cover, and compression state's elastic component backward extrusion fixed cover extrudees simultaneously with fixed cover fixed connection's first sealing washer, makes the arc side of first sealing washer all the time with the lateral surface butt of valve ball to improve the sealing performance between valve ball and the disk seat. Through the setting of protective component, the inner wall that makes the valve body receives the extrusion force of spring more even, also avoids the spring to the damage that the valve body inner wall was contradicted because of lasting extrusion simultaneously.
2. Through the setting of spacing ring and extensible member, spacing ring and baffle fixed connection, wherein the extensible member is the pressure spring, and the one end and the turn-ups fixed connection of pressure spring, and the baffle is by retainer plate and spring butt and then fix on the inner wall of valve body, so compression state's pressure spring extrusion second sealing washer, continuously applys the extrusion force to the second sealing washer, makes the second sealing washer to the junction butt of annular ladder groove and first annular all the time, improves the sealing performance of disk seat and valve body junction.
2. By the arrangement of the sealing component and the protecting component, the sealing performance between the valve seat and the valve body and between the valve seat and the valve ball is improved, the possibility of leakage of a medium transported by the ball valve is reduced, and the possibility of environmental pollution caused by leakage of the medium transported by the ball valve is reduced; meanwhile, through the arrangement of the pressure spring and the spring, after the first sealing ring and the second sealing ring are worn to a certain extent, the extrusion of the pressure spring and the spring can continuously extrude the corresponding abutting surfaces of the first sealing ring and the second sealing ring, so that the service performance of the first sealing ring and the second sealing ring is improved, and the replacement frequency of the first sealing ring and the second sealing ring is reduced; with this ball valve through using seal assembly and protection subassembly, both reduced the possibility of polluted environment, reduced the change frequency of first sealing washer and second sealing washer again, more environmental protection and energy-conservation.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of a partial cross-sectional structure embodying the installation cooperation of a packing cavity and a packing in accordance with an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of an embodiment of the present application;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
fig. 5 is an enlarged schematic view of a portion B in fig. 3.
In the figure, 1, a valve body; 11. a valve ball; 12. a valve seat; 121. an annular stepped groove; 13. a mounting cavity; 131. a first ring groove; 2. a valve cover; 21. a drip plate; 22. a filler cavity; 23. a filler; 24. a shaft sleeve; 3. an operating assembly; 4. a valve stem; 5. a seal assembly; 51. a fixed sleeve; 511. a positioning block; 512. an annular groove; 52. a first seal ring; 521. a positioning groove; 53. a lip seal; 54. a fixing ring; 541. a placement groove; 542. annular raised strips; 543. a guide groove; 55. a spring; 56. a second seal ring; 57. a telescoping member; 571. a pressure spring; 6. a protective assembly; 61. a baffle plate; 611. a slot; 62. a guide plate; 621. a guide bar; 63. a limiting ring; 64. flanging; 641. and fixing the column.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings.
Examples:
referring to fig. 1, a high-sealing ball valve comprises a valve body 1, wherein a valve cover 2 is arranged on an upper cover of the valve body 1, an operation assembly 3 and a valve rod 4 inserted into the valve cover 2 are arranged on the valve cover 2, the valve cover 2 is fixedly connected with the valve body 1 through bolts, and the valve rod 4 is driven to rotate through the operation assembly 3.
Referring to fig. 1 and 2, a drip plate 21 is welded on the valve cover 2 to increase the cooling area, thereby preventing the valve body 1 from being affected by the temperature of water drops and sealing performance of the product. The upper end of the valve cover 2 is provided with a packing cavity 22 and a plurality of packing materials 23 positioned in the packing cavity 22, the upper end of the packing materials 23 is provided with a shaft sleeve 24, and the shaft sleeve 24 is fixed on the upper side surface of the valve cover 2 through bolts; the upper end of the valve rod 4 passes through the packing cavity 22 and the shaft sleeve 24 and then is connected with the operation assembly 3.
Referring to fig. 3, a valve ball 11 is disposed in a valve body 1, valve seats 12 limiting the valve ball 11 are mounted on two sides of the valve ball 11, an arc-shaped sealing surface of the valve seat 12 is abutted against the outer circumferential surface of the valve ball 11, the lower end of a valve rod 4 penetrates through a valve cover 2 to be connected with the valve ball 11, and the valve rod 4 drives the valve ball 11 to synchronously rotate when rotating to control the opening and closing of the ball valve.
Referring to fig. 3 and 4, the inner wall of the valve body 1 is provided with a mounting cavity 13 for inserting the valve seat 12 at one side facing away from the valve ball 11, and the valve seat 12 can be inserted into and slide along the inner wall of the mounting cavity 13, so that the valve seat 12 is convenient to assemble; the valve body 1 is internally provided with a first annular groove 131 for inserting the valve seat 12, the outer circumferential surface of the valve seat 12 is provided with an annular stepped groove 121, and the inner wall of the annular stepped groove 121 is abutted with the inner wall of the first annular groove 131, so that the installation stability of the valve body 1 and the valve seat 12 is improved.
Referring to fig. 3, a sealing assembly 5 is provided in the valve body 1, and when the ball valve is opened or closed, the sealing assembly 5 is provided to prevent the ultra-low temperature circulating medium from penetrating into the valve cover 2 from the gap between the valve seat 12 and the valve body 1, and between the valve seat 12 and the valve ball 11, thereby improving the sealing performance.
Referring to fig. 3 and 4, the sealing assembly 5 includes a fixing sleeve 51 and a first sealing ring 52, the fixing sleeve 51 is sleeved on the outer circumferential surface of the valve seat 12 near the valve ball 11, and the inner wall of the fixing sleeve 51 is in threaded fit with the outer circumferential surface of the valve seat 12; the side surface of the fixed sleeve 51, which is close to the first sealing ring 52, is provided with a plurality of positioning blocks 511, and the first sealing ring 52 is provided with a plurality of positioning grooves 521 for embedding the positioning blocks 511, so that the first sealing ring 52 and the fixed sleeve 51 are relatively fixed; the side surface of the first sealing ring 52 facing away from the fixed sleeve 51 is an arc-shaped side surface, and after the fixed sleeve 51 and the first sealing ring 52 are installed, the arc-shaped side surface of the first sealing ring 52 is abutted against the outer side surface of the valve ball 11, so that the sealing performance between the valve ball 11 and the valve seat 12 is improved.
Referring to fig. 3 and 4, the sealing assembly 5 further includes an elastic member, where the elastic member includes a fixing ring 54 and a plurality of springs 55, the fixing ring 54 is movably sleeved on the outer peripheral surface of the valve seat 12, the fixing ring 54 abuts against a side surface of the fixing sleeve 51 facing away from the first sealing ring 52, a placing groove 541 into which the springs 55 are placed is formed on a side surface of the fixing ring 54 facing away from the fixing sleeve 51, and after the springs 55 are installed in the corresponding placing grooves 541, a part of the springs 55 extends out of the placing grooves 541 in a natural state; after the fixing ring 54 and the spring 55 are mounted, one end of the spring 55 extending to the outer side of the placement groove 541 is abutted against the inner wall of the valve body 1, and the spring 55 is in a compressed state; the spring 55 and the fixing ring 54 are matched in a mounting way, a pretightening force is applied to the fixing sleeve 51, the fixing sleeve 51 is reversely extruded, the sealing cambered surface of the valve seat 12 and the cambered side surface of the first sealing ring 52 are in close contact with the valve ball 11 in any condition, the tightness of a product is improved, and the pressing force between the valve seat 12 and the valve ball 11 can be adjusted through the threaded matching between the fixing sleeve 51 and the outer circumferential surface of the valve seat 12.
Referring to fig. 3 and 4, the fixing ring 54 is provided with an annular protrusion 542 near the side of the fixing sleeve 51, and the fixing sleeve 51 is provided with an annular groove 512 into which the annular protrusion 542 is inserted; by the cooperation of the annular protrusion 542 and the annular groove 512, the assembly stability between the retainer ring 54 and the retainer bushing 51 is improved.
Referring to fig. 3 and 4, the outer peripheral surface of the fixing ring 54 is sleeved with a protection component 6, wherein the protection component 6 comprises a baffle plate 61 and a guide plate 62, the baffle plate 61 and the guide plate 62 are vertically arranged and welded and fixed, the inner wall of the guide plate 62 is abutted to the outer peripheral surface of the fixing ring 54 and can slide relatively, meanwhile, a plurality of guide strips 621 are arranged on the inner side surface of the guide plate 62, and a guide groove 543 for the guide strips 621 to insert and slide is arranged on the outer side surface of the fixing ring 54, so that the assembly stability between the guide plate 62 and the fixing ring 54 is improved.
Referring to fig. 3 and 4, the end of the spring 55 extending outside the placement groove 541 abuts against the inner side surface of the barrier plate 61, so that damage to the inner wall of the valve body 1 caused by continuous extrusion and interference of the spring 55 is avoided, and protection of the spring 55 and the valve body 1 is improved through the protection component 6. The inner side surface of the baffle plate 61 is provided with a slot 611 into which the spring 55 is inserted, and one end of the spring 55 extending out of the placing slot 541 is inserted into the slot 611, so that the spring 55 is limited, and the installation stability of the spring 55 is improved.
Referring to fig. 3 and 5, the sealing assembly 5 further includes a second sealing ring 56 sleeved on the outer peripheral surface of the annular step groove 121, and the second sealing ring 56 abuts against and seals the connection part between the annular step groove 121 and the first annular groove 131, so as to improve the sealing performance of the connection part between the annular step groove 121 and the first annular groove 131.
Referring to fig. 5, a limiting ring 63 limiting the fixing ring 54 is fixed to the baffle plate 61 by welding vertically, an inward flange 64 is provided on the limiting ring 63, and a side surface of the second seal ring 56 facing away from the first ring groove 131 abuts against the flange 64. The limiting ring 63, the flanging 64, the baffle plate 61 and the guide plate 62 are welded, fixed and formed, the baffle plate 61 is fixedly abutted on the inner wall of the valve body 1 through the fixing ring 54, the limiting ring 63 and the flanging 64 are further fixed through the fixing of the baffle plate 61, the possibility that the second sealing ring 56 loosens or moves on the annular stepped groove 121 is reduced, and the installation stability of the second sealing ring 56 is improved.
Referring to fig. 5, the sealing assembly 5 further includes a plurality of expansion members 57 fixed between the second sealing ring 56 and the flange 64, the expansion members 57 are compression springs 571 in a compressed state, a fixing column 641 in which an end of each compression spring 571 is embedded is provided on an inner wall of the flange 64, an inner side surface of an end of each compression spring 571 is in interference fit with an outer side surface of the corresponding fixing column 641, the other end of each compression spring 571 abuts against the outer side surface of the corresponding second sealing ring 56, and the compression springs 571 in a compressed state press the corresponding second sealing ring 56, so that the second sealing ring 56 always abuts against a joint of the corresponding annular step groove 121 and the corresponding first annular groove 131, and sealing performance of the joint of the corresponding annular step groove 121 and the corresponding first annular groove 131 is improved.
Referring to fig. 5, the outer side surface of the valve seat 12 is sleeved with a lip seal ring 53, and the outer side surface of the lip seal ring 53 abuts against the inner wall of the first ring groove 131, so that the joint between the valve seat 12 and the valve body 1 is further sealed, and the sealing performance of the joint between the valve seat 12 and the valve body 1 is further improved.
Referring to fig. 5, after the sealing assembly 5 and the protection assembly 6 are assembled, the pressure spring 571 presses the flange 64, the flange 64 is pressed to drive the stop ring 63 and the baffle plate 61 to move toward the fixing ring 54, and the baffle plate 61 presses the spring 55 in the accommodating groove 541; simultaneously, the spring 55 is extruded, the spring 55 can reversely extrude the baffle plate 61, and then the limiting ring 63 and the flanging 64 are driven to move towards the direction close to the pressure spring 571, and the pressure spring 571 further extrudes the second sealing ring 56; by the pressing of the compression spring 571 and the spring 55, the sealing performance between the first seal ring 52 and the valve seat 12 and the valve ball 11, and between the second seal ring 56 and the valve seat 12 and the valve body 1 is improved.
The implementation principle of the embodiment of the application is as follows:
in the use process of the high-sealing ball valve, a low-temperature liquid medium flows in the valve body 1, the spring 55 in a compressed state extrudes the fixed sleeve 51, and pretightening force is applied to the fixed sleeve 51, so that the sealing surface of the valve seat 12 and the first sealing ring 52 are in close contact with the valve ball 11 in any condition, the tightness of a product is improved, and the compression force between the valve seat 12 and the valve ball 11 can be regulated through threaded fit between the fixed sleeve 51 and the outer peripheral surface of the valve seat 12; the compression spring 571 in a compressed state presses the second sealing ring 56, so that the second sealing ring 56 always abuts against the joint of the annular step groove 121 and the first annular groove 131, and the sealing performance of the joint of the valve body 1 and the valve seat 12 is improved.
By arranging the sealing assembly 5 and the protection assembly 6, the sealing performance between the valve seat 12 and the valve body 1 and between the valve seat 12 and the valve ball 11 is improved, the possibility of leakage of medium transported by the ball valve is reduced, and the possibility of environmental pollution caused by leakage of the transported medium is reduced; meanwhile, through the arrangement of the pressure spring 571 and the spring 55, after the first sealing ring 52 and the second sealing ring 56 are worn to a certain extent, the first sealing ring 52 and the second sealing ring 56 are continuously extruded to the corresponding abutting surfaces due to the extrusion of the pressure spring 571 and the spring 55, so that the service performance of the first sealing ring 52 and the second sealing ring 56 is improved, and the replacement frequency of the first sealing ring 52 and the second sealing ring 56 is reduced; the ball valve reduces the possibility of environmental pollution and reduces the replacement frequency of the first sealing ring 52 and the second sealing ring 56 by using the sealing assembly 5 and the protection assembly 6, thereby being more environment-friendly and energy-saving.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (3)
1. The high-sealing ball valve comprises a valve body (1) and a valve cover (2), wherein the valve cover (2) is provided with a valve rod (4) and an operating assembly (3), the lower end of the valve rod (4) penetrates through the valve cover (2) to be connected with a valve ball (11), a valve seat (12) limiting the valve ball (11) is arranged in the valve body (1), and an installation cavity (13) for inserting the end part of the valve seat (12) opposite to the valve ball (11) is arranged in the valve body (1);
the valve is characterized in that a sealing assembly (5) is arranged in the valve body (1), the sealing assembly (5) comprises a fixed sleeve (51) and a first sealing ring (52), the fixed sleeve (51) of the fixed sleeve (51) is arranged on the outer side face of the valve seat (12), the side face, close to the valve ball (11), of the first sealing ring (52) is an arc-shaped side face, one side, facing away from the valve ball (11), of the first sealing ring (52) is fixedly connected with the side face of the fixed sleeve (51), the sealing assembly (5) further comprises an elastic piece in a compressed state, one side of the elastic piece is in butt joint with the inner wall of the valve body (1), and the other side of the elastic piece is in butt joint with the side face, facing away from the first sealing ring (52), of the fixed sleeve (51);
the elastic piece comprises a fixed ring (54) and a plurality of springs (55), a placing groove (541) for placing the springs (55) is formed in one side of the fixed ring (54), the end parts of the springs (55) are fixedly connected with the bottom side of the placing groove (541), one part of the springs (55) extend out of the placing groove (541), the end parts of the springs (55) extending out of the placing groove (541) are abutted with the inner wall of the valve body (1), and one side of the fixed ring (54) opposite to the springs (55) is abutted with the side surface of the fixed sleeve (51) opposite to the first sealing ring (52); the side surface of the fixed ring (54) close to the fixed sleeve (51) is provided with an annular raised line (542), and the fixed sleeve (51) is provided with an annular groove (512) for the annular raised line (542) to be inserted in;
the outer side of the fixed ring (54) is sleeved with a protection assembly (6), the protection assembly (6) comprises a baffle plate (61) and a guide plate (62) which are perpendicular to each other, the end part of a spring (55) extending out of the placing groove (541) is abutted against the inner side surface of the baffle plate (61), and the guide plate (62) is sleeved on the outer peripheral surface of the fixed ring (54) and is in sliding connection with the outer peripheral surface of the fixed ring (54); the inner side surface of the guide plate (62) is provided with a plurality of guide strips (621), and the outer side surface of the fixed ring (54) is provided with a guide groove (543) for the guide strips (621) to insert and slide; the valve is characterized in that a first annular groove (131) into which the valve seat (12) is inserted is formed in the valve body (1), an annular stepped groove (121) is formed in the outer circumferential surface of the valve seat (12), the inner wall of the annular stepped groove (121) is abutted against the inner wall of the first annular groove (131), the sealing assembly (5) further comprises a second sealing ring (56) sleeved on the outer circumferential surface of the annular stepped groove (121), and one side of the second sealing ring (56) is abutted against the joint of the annular stepped groove (121) and the first annular groove (131);
the baffle plate (61) is vertically and fixedly connected with a limiting ring (63) limiting the fixed ring (54), an inward flanging (64) is arranged on the limiting ring (63), and the side surface of the second sealing ring (56) facing away from the first annular groove (131) is abutted with the flanging (64); the sealing assembly (5) further comprises a plurality of telescopic parts (57) located between the second sealing ring (56) and the flanging (64), one end of the telescopic part (57) in a compressed state is fixedly connected with the inner wall of the flanging (64), and the other end of the telescopic part (57) is abutted to the side face of the second sealing ring (56).
2. The high-sealing ball valve according to claim 1, wherein the expansion piece (57) is a compression spring (571), a fixing column (641) for embedding an end part of the compression spring (571) is arranged on the inner wall of the flanging (64), and the inner side surface of the end part of the compression spring (571) is in interference fit with the outer side surface of the fixing column (641).
3. The high-sealing ball valve according to claim 1, wherein a plurality of positioning blocks (511) are arranged on the side surface, close to the first sealing ring (52), of the fixing sleeve (51), and positioning grooves (521) for inserting the positioning blocks (511) are formed in the first sealing ring (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310247014.2A CN116221447B (en) | 2023-03-09 | 2023-03-09 | High-sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310247014.2A CN116221447B (en) | 2023-03-09 | 2023-03-09 | High-sealing ball valve |
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| Publication Number | Publication Date |
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| CN116221447A CN116221447A (en) | 2023-06-06 |
| CN116221447B true CN116221447B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310247014.2A Active CN116221447B (en) | 2023-03-09 | 2023-03-09 | High-sealing ball valve |
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117588579B (en) * | 2024-01-12 | 2024-03-19 | 四川飞球（集团）有限责任公司 | High-tightness ball valve |
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| CN102080732A (en) * | 2009-12-01 | 2011-06-01 | 凯撒博内蒂股份公司 | Metal seal for ball valves and ball valve comprising said seal |
| CN104141805A (en) * | 2014-08-11 | 2014-11-12 | 苏州纽威阀门股份有限公司 | Valve seat with ball valve and ball valve provided with valve seat |
| GB201510321D0 (en) * | 2015-06-12 | 2015-07-29 | Heap & Partners Ltd | Method of assembling a ball valve housing |
| CN209213056U (en) * | 2018-09-28 | 2019-08-06 | 五洲阀门股份有限公司 | Multi-sealed ball valve |
| CN216590063U (en) * | 2021-12-31 | 2022-05-24 | 上海邦颂自控阀门有限公司 | Pneumatic flange ball valve |
| CN216789299U (en) * | 2022-03-08 | 2022-06-21 | 浙江铭奥阀门有限公司 | Fixed ball valve of high leakproofness |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112016015755B1 (en) * | 2014-10-28 | 2021-11-30 | Kitz Corporation | TRUNNION TYPE BALL VALVE |
-
2023
- 2023-03-09 CN CN202310247014.2A patent/CN116221447B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080732A (en) * | 2009-12-01 | 2011-06-01 | 凯撒博内蒂股份公司 | Metal seal for ball valves and ball valve comprising said seal |
| CN104141805A (en) * | 2014-08-11 | 2014-11-12 | 苏州纽威阀门股份有限公司 | Valve seat with ball valve and ball valve provided with valve seat |
| GB201510321D0 (en) * | 2015-06-12 | 2015-07-29 | Heap & Partners Ltd | Method of assembling a ball valve housing |
| CN209213056U (en) * | 2018-09-28 | 2019-08-06 | 五洲阀门股份有限公司 | Multi-sealed ball valve |
| CN216590063U (en) * | 2021-12-31 | 2022-05-24 | 上海邦颂自控阀门有限公司 | Pneumatic flange ball valve |
| CN216789299U (en) * | 2022-03-08 | 2022-06-21 | 浙江铭奥阀门有限公司 | Fixed ball valve of high leakproofness |
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| Publication number | Publication date |
|---|---|
| CN116221447A (en) | 2023-06-06 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A high sealing ball valve Effective date of registration: 20231123 Granted publication date: 20230815 Pledgee: Zhejiang Commercial Bank Co.,Ltd. Wenzhou Longwan sub branch Pledgor: WUZHOU VALVE Co.,Ltd. Registration number: Y2023330002777 |
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