CN108278377A - Formula high-temperature ball valve is filled on the zero leakage long-life - Google Patents
Formula high-temperature ball valve is filled on the zero leakage long-life Download PDFInfo
- Publication number
- CN108278377A CN108278377A CN201711210606.8A CN201711210606A CN108278377A CN 108278377 A CN108278377 A CN 108278377A CN 201711210606 A CN201711210606 A CN 201711210606A CN 108278377 A CN108278377 A CN 108278377A
- Authority
- CN
- China
- Prior art keywords
- valve
- face
- valve seat
- radial
- sphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The present invention relates to one kind zero to sew dress formula high-temperature ball valve on the long-life, including valve body, valve deck, valve seat, sphere, valve rod, sealing element and installation part；Radial floating device is equipped with mainly between valve seat and valve body, the radial floating device is made of the floating ring in valve channel between radial step and valve deck radial end face, dynamic sealing coordinates between radial step and valve deck radial end face in floating ring both ends of the surface and valve channel, there is flotation chamber between floating ring periphery and valve channel inner round wall, valve seat both sides of the face are mounted between the inside step of diameter of valve deck radial end face and floating ring endoporus, butterfly spring is installed between valve seat and valve deck, valve seat periphery coordinates with floating ring inner hole wall dynamic sealing.Valve seat radial floating, the concentricity of adjust automatically sphere spherical surface sealing surface and valve seat ball face sealing face is pushed to reduce the abrasion between sealing pair in opening-closing process, have the characteristics that good seal performance, long product lifecycle in sphere closing process.
Description
Technical field
The invention belongs to valve field more particularly to a kind of ball valves.
Background technology
Ball valve has many advantages, such as that simple in structure, conveniently opening and closing, full-bore circulation, flow resistance are small, is widely used in national economy
The medium delivery pipe road in each field, structure mainly include valve body, valve deck, valve seat, sphere, valve rod, sphere by valve rod installation with
Body cavity, sphere form mutually matched ball face sealing pair with valve seat, are sealed between valve seat periphery and valve channel endoporus
Cooperation drives 90 ° of rotations of sphere by valve rod by transmission device, realizes the keying operation of ball valve.Its major defect is：Valve seat diameter
To valve channel inner wall is fixedly mounted on, it is fixed in valve seat centerline theory on valve channel center line, still, sphere installation
After body cavity, more or less there is deviation between sphere center position and valve seat center line, and sphere spherical surface and valve seat
All there is mismachining tolerance in ball face sealing face, leading to the concentricity in sphere spherical surface and valve seat ball face sealing face, there are deviations, make sphere
The seal pressure of sealing pair circumferencial direction is inconsistent when coordinating with valve seat, constrains the raising of the sealing performance of ball valve, error compared with
It is leaked when big, this is the main reason for causing existing hard seal ball valve manufacture pressure testing qualification rate low.And it is using
The abrasion for increasing sphere and sealing surface of seat in the process, reduces product service life.
Invention content
The purpose of the present invention is being directed to disadvantage of the existing technology, provide one kind can adjust automatically sphere match with valve seat
Good concentricity is closed, good seal performance fills formula high-temperature ball valve on the zero leakage long-life of long product lifecycle.
Technical scheme of the present invention includes valve body, valve deck, valve seat, sphere, valve rod, sealing element and installation part, sphere and valve
Seat tool has mutually matched ball face sealing face；Radial floating device, radial floating dress are equipped with mainly between valve seat and valve body
It sets and is made of the floating ring in valve channel between radial step and valve deck radial end face, floating ring both ends of the surface and valve body
Dynamic sealing coordinates between radial step and valve deck radial end face in channel, between floating ring periphery and valve channel inner round wall
With flotation chamber, valve seat both sides of the face are mounted between the inside step of diameter of valve deck radial end face and floating ring endoporus, in valve seat
Butterfly spring is installed, valve seat periphery coordinates with floating ring inner hole wall dynamic sealing between valve body；Valve body upper end is formed with sphere installation
Mouthful, valve rod is sealingly mounted at by upper cover on sphere installation mouth.
It is an advantage of the invention that being equipped with radial floating device between valve seat and valve body, valve is pushed in sphere closing process
Seat radial floating, the concentricity of adjust automatically sphere spherical surface sealing surface and valve seat ball face sealing face reduce and are sealed in opening-closing process
Pair abrasion, has the characteristics that good seal performance, long product lifecycle.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Specific implementation mode
Formula high-temperature ball valve, including valve body 1, valve deck 6, valve seat 5, sphere 7, valve are filled on the zero leakage long-life as shown in Figure 1
Bar, sealing element and installation part, sphere 7 have mutually matched ball face sealing face with valve seat 5；Diameter is equipped between valve seat 5 and valve body 1
To floating installation, the radial floating device from mounted on 1 channel internal diameter of valve body to the floating between 6 radial end face of step and valve deck
Ring 3 forms, and dynamic sealing coordinates between 6 radial end face of radial step and valve deck in 1 channel of 3 both ends of the surface of floating ring and valve body,
The first sealing ring 8 is installed between radial step in 1 channel of 3 left side of floating ring and valve body, in 3 right side of floating ring and valve deck
Second sealing ring 10 is installed between 6 radial end faces, there is flotation chamber 2 between 1 channel inner round wall of 3 periphery of floating ring and valve body,
Allow floating ring 3 in 1 channel internal diameter of valve body to movement, 5 both sides of the face of valve seat are mounted on 6 radial end face of valve deck and floating ring 3
Between the inside step of diameter of endoporus, floating ring 3 drives valve seat 5 integrally to move radially.Valve deck 6 is fixed by bolt 12 and valve body 1 to be connected
Connect, gasket 11 be set between valve deck 6 and the opposite end face of valve body 1, valve seat 5 close to sealing surface side radial end face with it is floating
There is axial floating gap 4,5 periphery of valve seat to match with 3 inner hole wall dynamic sealing of floating ring between the inside step of diameter of 3 endoporus of rotating ring
It closes, so that valve seat 5 is moved axially in 3 endoporus of floating ring, prevent high-temperature expansion between sphere 7 and valve seat 5 stuck, outside valve seat 5
Disc is sealed with 3 inner hole wall of floating ring using O-ring seal 9；Butterfly is set between the opposite radial end face of valve seat 5 and valve deck 6
Shape spring, butterfly spring move the inside step of the diameter of valve seat 5 to 3 endoporus of floating ring, increase sphere 7 and coordinate with the sealing of valve seat 5
When seal pressure, and valve seat 5 is allow to be moved axially in 3 endoporus of floating ring, prevents sphere 7 and 5 high temperature of valve seat stuck；Valve body
1 upper end is formed with sphere installation mouth, and valve rod is sealingly mounted at by upper cover on sphere installation mouth.
Claims (1)
1. one kind zero sews dress formula high-temperature ball valve on the long-life, including valve body（1）, valve deck（6）, valve seat（5）, sphere（7）, valve
Bar, sealing element and installation part, sphere（7）With valve seat（5）With mutually matched ball face sealing face；It is characterized in that valve seat（5）With
Valve body（1）Between be equipped with radial floating device, the radial floating device is by being mounted on valve body（1）Channel internal diameter is to step and valve deck
（6）Floating ring between radial end face（3）Composition, floating ring（3）Both ends of the surface and valve body（1）Radial step in channel and valve deck
（6）Dynamic sealing coordinates between radial end face, floating ring（3）Periphery and valve body（1）There is flotation chamber between the inner round wall of channel
（2）, valve seat（5）Both sides of the face are mounted on valve deck（6）Radial end face and floating ring（3）Between the inside step of diameter of endoporus, in valve
Seat（5）With valve deck（6）Between butterfly spring, valve seat are installed（5）Periphery and floating ring（3）Inner hole wall dynamic sealing coordinates；Valve body
（1）Upper end is formed with sphere installation mouth, and valve rod is mounted on by upper cover on sphere installation mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210606.8A CN108278377A (en) | 2017-11-28 | 2017-11-28 | Formula high-temperature ball valve is filled on the zero leakage long-life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711210606.8A CN108278377A (en) | 2017-11-28 | 2017-11-28 | Formula high-temperature ball valve is filled on the zero leakage long-life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108278377A true CN108278377A (en) | 2018-07-13 |
Family
ID=62801341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711210606.8A Withdrawn CN108278377A (en) | 2017-11-28 | 2017-11-28 | Formula high-temperature ball valve is filled on the zero leakage long-life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278377A (en) |
-
2017
- 2017-11-28 CN CN201711210606.8A patent/CN108278377A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180713 |