CN114352763B - Top-mounted cryogenic ball valve, on-line assembly device and assembly process thereof - Google Patents
Top-mounted cryogenic ball valve, on-line assembly device and assembly process thereof Download PDFInfo
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- CN114352763B CN114352763B CN202210031789.1A CN202210031789A CN114352763B CN 114352763 B CN114352763 B CN 114352763B CN 202210031789 A CN202210031789 A CN 202210031789A CN 114352763 B CN114352763 B CN 114352763B
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- valve
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- clamping plate
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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
- F16K5/06—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
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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
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention relates to a top-mounted cryogenic ball valve, and an on-line assembly device and an assembly process thereof, which are characterized in that: the assembly device adopts a hydraulic piston device, and utilizes hydraulic pressure to push the valve seat to axially move and be in compression fit with the ball body, so that collision and abrasion to the ball body when a metal tool is adopted for operation are avoided, and the assembly device has the advantages of convenience in operation, no damage to the sealing surface of the ball body, good sealing performance, convenience in assembly operation process and the like.
Description
Technical Field
The invention relates to an installation tool and an assembly process of a top-mounted ball valve.
Background
The present invention is a priority application with the prior application number 202123325935.1, and the prior application date is 2021, 12, 27.
Valves used in LNG pipeline systems commonly employ top-mounted cryogenic ball valves, with spheres and valve seats being installed from cavities in the valve body. The installation firstly installs the valve seat in the valve body channel, and retracts the valve seat into the valve body channel by rotating the valve seat pushing ring in threaded connection with the valve seat, and then reversely rotates the valve seat pushing ring to remove the valve seat from the valve body channel and press fit with the ball body after installing the ball body. In addition, as the upper-mounted ball valve with the application number of CN202110223045.5 and the assembling tool and process thereof, the clamping ring of the assembling tool is clamped at the bulge of the spring seat at the outer side of the valve seat, and the valve seat is pushed into or pulled out of the valve body channel by rotating the threaded push-pull sleeve, so that the ball body and the valve seat are assembled and disassembled. The main defects are that the rotary thread push-pull sleeve needs to be operated by a spanner, and the surface of the sphere is easy to collide and scratch in the operation process, so that the sealing surface of the sphere is damaged, and the sealing performance is affected; moreover, the screw thread push-pull sleeve is easily blocked by the valve body and the ball body by adopting the spanner to rotate in the inner cavity of the valve body, and the operation is very inconvenient.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides an on-line installation tool of a cryogenic ball valve and an assembly process thereof, wherein the operation tool is convenient to move and operate, the ball body is not rubbed and bumped with an operation tool in the disassembly and assembly process, and the friction and the bump damage of a ball body sealing surface are avoided.
The invention aims at realizing the following technical scheme:
the upper-mounted cryogenic ball valve comprises a valve body, a ball body and a valve seat, wherein the valve body adopts an integrated upper-mounted structure, a spring seat is arranged on the outer circular surface of the valve seat, a clamping groove arranged on the outer circular surface of the spring seat is matched with a clamping spring to be integrally arranged in a valve body channel, an annular shoulder is arranged at the inner end of the spring seat, and the annular shoulder is matched with the clamping groove of the assembly device; the method is characterized in that: the assembly device adopts a hydraulic piston device and consists of a cylinder body, a piston rod and a clamping plate, wherein a rod-free cavity of the cylinder body is provided with a hydraulic joint, a rod cavity is provided with a spring, the clamping plate is fixedly connected with one end part of the rod cavity of the cylinder body, and the clamping plate is provided with a clamping groove matched with an annular shoulder of a spring seat.
Preferably, the clamping plate and the cylinder body are fixedly connected through threads, the end face of the rod cavity of the cylinder body is provided with a circular ring in clearance fit with the piston rod, the circular ring is provided with external threads, and the clamping plate is provided with a screw hole matched with the external threads of the circular ring.
Preferably, the clamping groove of the clamping plate adopts a 1/4 circular arc groove with the radian equal to that of the annular convex shoulder of the spring seat.
Preferably, the clamping plate and the cylinder body are mutually embedded and connected by adopting a bayonet and a buckle.
An on-line assembly process of an upper-mounted cryogenic ball valve is characterized in that:
a. valve seat and spring seat assembly: the spring seat is arranged on the outer circular surface of the valve seat, and the clamp spring is sleeved on the outer circular surface of the spring seat; b. valve seat installation: the valve seat and the spring seat are integrally arranged in the valve body from the middle cavity of the valve body and retracted into the valve body channel; c. and (3) ball installation: loading the ball into the valve cavity from the valve body cavity and rotating to a closing position with the valve seat sealing surface; d. the hydraulic piston device is installed from the cavities at two sides of the valve body, and the clamping groove of the clamping plate is clamped on the annular convex shoulder of the spring seat; e. the hydraulic joint is communicated with a hydraulic pump to input pressure to the rodless cavity of the cylinder body, and the clamp spring is embedded into an annular clamping groove on the outer circular surface of the spring seat after the valve seat is tightly pressed with the ball body; f. closing the hydraulic pump and taking out the hydraulic piston device; g. and installing a valve body middle cavity sealing device and transmission.
Compared with the prior art, the invention has the beneficial effects that: the assembly device adopts a hydraulic piston device, and utilizes hydraulic pressure to push the valve seat to axially move and be in compression fit with the ball body, so that collision and abrasion to the ball body when a metal tool is adopted for operation are avoided, and the assembly device has the advantages of convenience in operation, no damage to the sealing surface of the ball body, good sealing performance and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the top-loading cryogenic ball valve and its on-line assembly device of the present invention.
In the figure: 1 sphere, 2 valve body, 3 cylinder cap, 4 pistons, 5 springs, 6 cylinder bodies, 7 clamping plates, 8 piston rods, 9 spring seats, 10 valve seats, 11 clamping springs and 12 annular convex shoulders.
Detailed Description
The upper-mounted cryogenic ball valve and an on-line assembly device thereof shown in fig. 1 comprise a valve body 2, a ball body 1 and a valve seat 10, wherein the valve body 2 adopts an integrated upper-mounted structure, namely, a mounting opening is arranged in a middle cavity, the ball body 1 and the valve seat 10 are mounted in a valve cavity from the mounting opening, a spring seat 9 is arranged on the outer circular surface of the valve seat 10, an annular clamping groove arranged on the outer circular surface of the spring seat 9 is integrally matched with a clamping spring 11 to be mounted in a channel of the valve body 2, an annular shoulder 12 is arranged at the inner end of the spring seat 9, the annular shoulder 12 is mutually matched with a clamping groove of the assembly device, a disc spring is mounted at the inner end of the spring seat 9 close to one end of the ball body 1, and a disc spring is mounted between radial steps of the valve seat 10 and the spring seat 9 to form a floating valve seat structure; the method is characterized in that: the assembly device adopts a hydraulic piston device, the assembly device consists of a cylinder body 6, a cylinder cover 3, a piston 4, a piston rod 8 and a clamping plate 7, a rodless cavity is formed by sealing and mounting the cylinder cover 3 and the cylinder body 6, a hydraulic joint for communicating the rodless cavity with a hydraulic pump is arranged on the cylinder cover 3, hydraulic pressure is input into the rodless cavity, the piston 4 and the piston rod 8 are pushed to move relative to the cylinder body 6, a spring 5 is arranged in the rod cavity, the piston 4 and the piston rod 8 are pushed to reset after the pressure relief of the rodless cavity, the clamping plate 7 is fixedly connected with one end part of the cylinder body 6 on one side of the rod cavity, the clamping plate 7 is provided with a clamping groove matched with an annular shoulder 12 of a spring seat 9, when a valve seat 10 is mounted, the clamping groove of the clamping plate 7 is embedded into the annular shoulder 12, the rodless cavity inputs hydraulic pressure to push the piston 4 and the piston rod 8 to move the cylinder body 6 and the clamping plate 7 towards the direction of a ball body 1, the valve seat 10 is driven to move towards the direction of the ball body 1 and be compressed with the ball 1, then the clamping spring 11 is embedded into the annular clamping groove on the spring seat 9, and the hydraulic pressure is unloaded to take out the hydraulic piston device.
The technical effect that this technical scheme produced is, utilizes hydraulic pressure to remove disk seat 10, has avoided the problem that receives valve body 2 and spheroid 1 to block and the easy scratch problem of spheroid 1 when prior art adopts metal tool to operate. The hydraulic piston device is simultaneously suitable for assembling the single-valve seat and the double-valve seat ball valve, and when the double-valve seat ball valve is assembled, a hydraulic piston device is arranged on annular convex shoulders of the two valve seats, and hydraulic pressure is simultaneously input to the two hydraulic piston devices.
The clamping groove of the clamping plate 7 adopts a 1/4 circular arc groove with the radian equal to that of the annular convex shoulder 12 of the spring seat 9.
The technical characteristics have the technical effects that on the premise of ensuring that the clamping plate 7 and the annular convex shoulder 12 are conveniently embedded, the annular contact area between the clamping plate 7 and the annular convex shoulder 12 is increased, and the movement stability of the valve seat 10 is improved.
The clamping plate 7 and the cylinder body 6 are fixedly connected through threads, the end face of the rod cavity of the cylinder body 6 is provided with a circular ring in clearance fit with the piston rod 8, the circular ring is provided with external threads, and the clamping plate 7 is provided with a screw hole matched with the circular ring external threads. The ring is concentric with the cylinder body 6, and is integrally formed by extending the outer end surface of the cylinder body 6.
The technical effect that this technical characteristics produced is, can be to the ball valve of different bore, changes the cardboard 7 of different draw-in groove radians, and cardboard 7 changes simple to operate has improved hydraulic piston device's commonality.
The clamping plate 7 and the cylinder body 6 are mutually embedded and connected by adopting a bayonet and a buckle, the bayonet is arranged on the end face of the clamping plate 7, the buckle is arranged on the end face of the cylinder body 6, the buckle on the cylinder body 6 is inserted into the bayonet on the clamping plate 7, and the clamping plate 7 is embedded on the cylinder body 6 by relative rotation of the clamping plate 7 and the cylinder body 6.
An on-line assembly process of an upper-mounted cryogenic ball valve is characterized in that:
a. valve seat and spring seat assembly: the spring seat 9 is arranged on the outer circular surface of the valve seat 10, an annular clamping groove of the spring seat 9, in which the clamping spring 11 is withdrawn, is sleeved on the outer circular surface, and a disc spring is arranged between the valve seat 10 and a radial step of the spring seat 9; b. valve seat installation: the valve seat 10 and the spring seat 9 are integrally arranged in the valve body 2 from the cavity and retracted into the valve body channel; c. and (3) ball installation: the ball 1 is put into the valve cavity from the cavity of the valve body 2 and is rotated to a closing position with the sealing surface of the valve seat 10; d. the hydraulic piston device is arranged between the inner cavity of the valve body 2 and the cavities at two sides of the ball body 1, and the clamping groove of the clamping plate 7 is clamped on the annular convex shoulder 12 of the spring seat 9; e. the hydraulic joint is communicated with a hydraulic pump to input pressure to the rodless cavity of the cylinder body 6 until the valve seat 10 is tightly pressed with the ball body 1, and the clamp spring 11 is embedded into an annular clamping groove on the outer circular surface of the spring seat 9; f. closing the hydraulic pump and taking out the hydraulic piston device; g. and installing a cavity sealing device in the valve body and a transmission device, such as a valve cover, a sealing filler and an actuator.
The assembly process has the technical effects that the valve seat 10 is moved by utilizing the hydraulic pressure, the operation is convenient, parts are not damaged in the operation process, and the matching performance of the parts and the product quality are improved.
Claims (3)
1. The utility model provides a top-mounted cryogenic ball valve and on-line assembly device thereof, including valve body (2), spheroid (1), disk seat (10), valve body (2) adopts integral type top-mounting structure, disk seat (10) outer disc sets up spring holder (9), installs in valve body (2) passageway by the annular draw-in groove that the outer disc set up of spring holder (9) cooperates an organic whole with jump ring (11), is equipped with annular convex shoulder (12) in spring holder (9) inner, and this annular convex shoulder (12) cooperates with assembly device's draw-in groove each other; the method is characterized in that: the assembly device adopts a hydraulic piston device and consists of a cylinder body (6), a cylinder cover (3), a piston (4), a piston rod (8) and a clamping plate (7), wherein the cylinder cover (3) and the cylinder body (6) are hermetically installed to form a rodless cavity, a hydraulic joint for communicating the rodless cavity with a hydraulic pump is arranged on the cylinder cover (3), a spring (5) is arranged in the rod cavity, the clamping plate (7) is fixedly connected with the outer end part of one side of the cylinder body (6) with the rod cavity, and the clamping plate (7) is provided with a clamping groove matched with an annular shoulder (12) of a spring seat (9); the clamping plate (7) is fixedly connected with the cylinder body (6) through threads, the outer end face of the rod cavity of the cylinder body (6) is provided with a circular ring in clearance fit with the piston rod (8), the circular ring is provided with external threads, and the clamping plate (7) is provided with a screw hole matched with the circular ring external threads.
2. The top-loading cryogenic ball valve and on-line assembly device thereof according to claim 1, wherein: the clamping groove of the clamping plate (7) adopts a 1/4 circular arc groove with the radian equal to that of the annular convex shoulder (12) of the spring seat (9).
3. An on-line assembly process of the upper-mounted cryogenic ball valve and the on-line assembly device thereof as claimed in claim 1 or 2, which is characterized in that:
a. valve seat and spring seat assembly: the spring seat (9) is arranged on the outer circular surface of the valve seat (10), and an annular clamping groove for the clamp spring (11) to exit the spring seat (9) is sleeved on the outer circular surface;
b. valve seat installation: the valve seat (10) and the spring seat (9) are integrally arranged in the valve body (2) from the cavity and are retracted into the valve body channel;
c. and (3) ball installation: the ball body (1) is arranged in the valve cavity from the cavity of the valve body (2) and rotates to a closing position with the sealing surface of the valve seat (10);
d. the hydraulic piston device is arranged between the inner cavity of the valve body (2) and the cavities at two sides of the ball body (1), and the clamping groove of the clamping plate (7) is clamped on the annular convex shoulder (12) of the spring seat (9);
e. the hydraulic joint is communicated with a hydraulic pump to input pressure to a rodless cavity of the cylinder body (6), and the clamp spring (11) is embedded into an annular clamping groove on the outer circular surface of the spring seat (9) until the valve seat (10) is tightly pressed with the ball body (1);
f. closing the hydraulic pump and taking out the hydraulic piston device;
g. and installing a cavity sealing device and a transmission device in the valve body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123325935 | 2021-12-27 | ||
| CN2021233259351 | 2021-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114352763A CN114352763A (en) | 2022-04-15 |
| CN114352763B true CN114352763B (en) | 2023-06-16 |
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ID=81109688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210031789.1A Active CN114352763B (en) | 2021-12-27 | 2022-01-12 | Top-mounted cryogenic ball valve, on-line assembly device and assembly process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114352763B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777624A (en) * | 2012-08-17 | 2012-11-14 | 慎江阀门有限公司 | Mounted online maintenance ball valve |
| CN203627882U (en) * | 2013-12-18 | 2014-06-04 | 雷蒙德（北京）阀门制造有限公司 | Up-mounted type ball valve with valve seat capable of being quickly dismounted and maintained online |
| CN203836266U (en) * | 2014-05-04 | 2014-09-17 | 环球阀门集团有限公司 | Upper-mounted self-sealing ball valve |
| CN204153211U (en) * | 2014-11-02 | 2015-02-11 | 上海纳福希阀门有限公司 | A kind of hydraulic pressure bracing type upper-mounting type ball valve |
| CN204226720U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of ball seat and apply the upper-mounting type ball valve of this ball seat |
| CN204226714U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of hydraulic top opening type upper-mounting type ball valve |
| CN104565424A (en) * | 2013-10-25 | 2015-04-29 | 大丰超威机械有限公司 | Top assembling type fixed ball valve capable of pushing valve seats open by utilizing air pressure |
| KR102100705B1 (en) * | 2018-10-15 | 2020-04-14 | 화성밸브 주식회사 | Top entry ball valve |
| CN113007379A (en) * | 2021-03-01 | 2021-06-22 | 浙江伯特利科技股份有限公司 | Top-mounted ball valve and assembling tool and process thereof |
| CN113202944A (en) * | 2021-05-14 | 2021-08-03 | 大通互惠集团有限公司 | Cryogenic single-valve-seat forced sealing valve convenient for online maintenance |
-
2022
- 2022-01-12 CN CN202210031789.1A patent/CN114352763B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777624A (en) * | 2012-08-17 | 2012-11-14 | 慎江阀门有限公司 | Mounted online maintenance ball valve |
| CN104565424A (en) * | 2013-10-25 | 2015-04-29 | 大丰超威机械有限公司 | Top assembling type fixed ball valve capable of pushing valve seats open by utilizing air pressure |
| CN203627882U (en) * | 2013-12-18 | 2014-06-04 | 雷蒙德（北京）阀门制造有限公司 | Up-mounted type ball valve with valve seat capable of being quickly dismounted and maintained online |
| CN203836266U (en) * | 2014-05-04 | 2014-09-17 | 环球阀门集团有限公司 | Upper-mounted self-sealing ball valve |
| CN204153211U (en) * | 2014-11-02 | 2015-02-11 | 上海纳福希阀门有限公司 | A kind of hydraulic pressure bracing type upper-mounting type ball valve |
| CN204226720U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of ball seat and apply the upper-mounting type ball valve of this ball seat |
| CN204226714U (en) * | 2014-11-02 | 2015-03-25 | 上海纳福希阀门有限公司 | A kind of hydraulic top opening type upper-mounting type ball valve |
| KR102100705B1 (en) * | 2018-10-15 | 2020-04-14 | 화성밸브 주식회사 | Top entry ball valve |
| CN113007379A (en) * | 2021-03-01 | 2021-06-22 | 浙江伯特利科技股份有限公司 | Top-mounted ball valve and assembling tool and process thereof |
| CN113202944A (en) * | 2021-05-14 | 2021-08-03 | 大通互惠集团有限公司 | Cryogenic single-valve-seat forced sealing valve convenient for online maintenance |
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| Publication number | Publication date |
|---|---|
| CN114352763A (en) | 2022-04-15 |
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