CN108730560A - Combination fire prevention floating ball valve seat - Google Patents
Combination fire prevention floating ball valve seat Download PDFInfo
- Publication number
- CN108730560A CN108730560A CN201810590765.3A CN201810590765A CN108730560A CN 108730560 A CN108730560 A CN 108730560A CN 201810590765 A CN201810590765 A CN 201810590765A CN 108730560 A CN108730560 A CN 108730560A
- Authority
- CN
- China
- Prior art keywords
- valve seat
- seat insert
- fire
- sphere
- valve
- 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.)
- Pending
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 4
- 239000010439 graphite Substances 0.000 claims abstract description 4
- 239000004677 Nylon Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
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
- F16K5/08—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
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The present invention relates to combination fire prevention floating ball valve seats, including valve seat insert, bracing ring and fire-protection ring, the valve seat insert is tapered sleeve shape structure made of metal, tapered sleeve shape structure has bigger diameter end and miner diameter end, valve seat insert is arranged along valve axis direction and its miner diameter end is resisted against on the sphere, and on the surface for being in contact with the sphere of the valve seat insert and/or surface for being in contact with valve seat insert of the sphere is equipped with nonmetallic coating；The fire-protection ring is graphite circle, and the bracing ring is the nonmetallic circle for flexibly supporting the valve seat insert, and fire-protection ring and bracing ring are pressed on by valve seat insert on valve body.Compared with the prior art, valve seat construction is simple, reduces difficulty of processing, convenient for assembly, and valve seat is smaller to ball valve rotary resistance, and sphere rotation is more flexible, after pipeline catches fire and burns nonmetallic coating, remains to keep reliably sealing the fire prevention, it can be achieved that real meaning.
Description
Technical field
The invention belongs to valve fields, and in particular to a kind of combination fire prevention floating ball valve seat.
Background technology
Ball valve is a kind of very common valve device, is divided into Fixed ball valve and float ball valve, Fixed ball valve
Sphere is fixed, and movement is not will produce after compression, and the sphere of float ball valve is to float, under pressure medium effect,
Sphere can generate certain displacement and be pressed on the sealing surface of outlet end, ensure outlet end sealing.
The Chinese utility model patent that notification number is CN204852444U, the day for announcing is 2015.12.09 discloses a kind of floating
Dynamic ball seat, including bracing ring, valve seat insert and spring, bracing ring include blocking portion and sealing, blocking portion and sealing
Portion connects, and valve seat insert is mounted in the sealing of bracing ring, and valve seat insert seals with sphere and valve body contact,
Spring is arranged in end face of the bracing ring far from sphere and between valve body, for providing pretightning force to sphere.
Existing floating ball valve disclosure satisfy that general operational requirement, but there is problems：1, bracing ring and valve seat are close
Seal is complicated, and difficulty of processing is larger；2, valve seat insert and sphere contact area are larger, and when rotational handle needs larger torsion
Square；3, it is difficult to realize real fire protection requirement.
Invention content
The purpose of the present invention is to provide a kind of new structural combination fire prevention floating ball valve seats, to solve existing floating
The above problem existing for ball valve.
To achieve the above object, combination of the invention fire prevention floating ball valve seat uses technical solution below：Combination is anti-
Fiery floating ball valve seat includes valve seat insert, bracing ring and fire-protection ring, and valve seat insert is tapered sleeve shape knot made of metal
Structure, tapered sleeve shape structure have bigger diameter end and miner diameter end, valve seat insert along valve axis direction be arranged and its miner diameter end against
On sphere, on the surface for being in contact with sphere of valve seat insert and/or sphere for connecting with valve seat insert
Tactile surface is equipped with nonmetallic coating；Fire-protection ring is graphite circle, is set close to the position of the bigger diameter end of valve seat insert on valve body
There are fire-protection ring installation cavity, fire-protection ring to be mounted in fire-protection ring installation cavity and compressed by the bigger diameter end of valve seat insert；Bracing ring is
Nonmetallic circle for flexibly supporting the valve seat insert, position corresponding with the inner conical surface of valve seat insert is set on valve body
There are bracing ring erecting bed, valve seat insert that bracing ring is pressed on bracing ring erecting bed.
Advantageous effect：Initial assembled state, the compressed generation flexible deformation of valve seat insert made of metal, valve seat are close
The small end of seal is resisted against on sphere, bigger diameter end is pressed on fire-protection ring, and nonmetallic coating combines closely generation initially with sphere
Sealing；It simultaneously supports circle to be compressed, generates flexible deformation, bracing ring generates sealing with valve body and valve seat insert.
After sphere is by medium active force, the further compression valve seat sealing ring of sphere, bracing ring carries out valve seat insert
Support avoids that excessive deformation occurs；When pipeline catches fire, the nonmetallic coating of bracing ring and valve seat insert is burned out, this
When valve seat insert metal surface contacted with sphere, valve seat insert compresses fire-protection ring, to effectively completely cut off burning things which may cause a fire disaster, ensures pipe
Road safety.
Compared with the prior art, bracing ring and valve seat insert are simple in structure, and difficulty of processing is low, and spring need not be arranged；
Need not in valve body processed springs mounting hole, reduce valve body difficulty of processing；Valve seat insert and bracing ring interact, really
Certain pretightning force has been protected, has ensured that ball valve sealing is reliable；In addition, the tapered sleeve shape structure of valve seat insert and the contact area of sphere
It is smaller, the torque needed for operation handle is reduced, keeps sphere rotation more flexible；After pipeline catches fire and burns nonmetallic coating, still
It can keep reliable and seal the fire prevention, it can be achieved that real meaning.
Further, the nonmetallic coating is polytetrafluorethylecoatings coatings, nylon coating or peek coatings.
Further, the bracing ring is made of polytetrafluoroethylene (PTFE) or nylon.
Further, the tapered sleeve shape structure of the valve seat insert is towards the centre of sphere of the sphere, make valve seat insert with
Active force between sphere makes entity uniform force everywhere towards solid centre, avoids that excessive deformation occurs, extends and use the longevity
Life.
Further, the end face for compressing the fire-protection ring of the valve seat insert is the rotation axis with the sphere
Parallel and perpendicular with the valve axis plane of line.
Description of the drawings
Fig. 1 is the sectional view of the specific embodiment of the combination fire prevention floating ball valve seat of the present invention；
Fig. 2 is the enlarged drawing at A in Fig. 1.
In figure：1- valve bodies, 2- spheres, 3- valve seats, 4- valve seat inserts, 5- bracing rings, 6- fire-protection rings, the nonmetallic paintings of 7-
Layer, 8- bracing ring erecting beds.
Specific implementation mode
Below in conjunction with attached drawing, technical scheme of the present invention is clearly and completely described, it is clear that described reality
A part of the embodiment that example is only the present invention is applied, instead of all the embodiments.Based on the embodiments of the present invention, this field
The every other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
As Figure 1-Figure 2, combination fire prevention floating ball valve seat includes valve body 1, sphere 2 and valve seat 3, valve body 1 have with
The perpendicular valve axis of the pivot center of sphere 2, valve seat 3 include valve seat insert 4, bracing ring 5 and fire-protection ring 6, and valve seat is close
Seal 4 is tapered sleeve shape structure made of metal, and tapered sleeve shape structure has bigger diameter end and miner diameter end.
Valve seat insert 4 is arranged along valve axis direction and its miner diameter end is resisted against on sphere 2, valve seat insert 4
Surface for being in contact with sphere 2 is equipped with nonmetallic coating 7, and nonmetallic coating 7 is polytetrafluorethylecoatings coatings, nylon coating
Or peek coatings.
Fire-protection ring 6 is graphite circle, and the position of the bigger diameter end on valve body 1 close to valve seat insert 4 is equipped with fire-protection ring installation cavity,
Fire-protection ring 6 is mounted in fire-protection ring installation cavity and is compressed by the bigger diameter end of valve seat insert 4, and valve seat insert 4 is used to compress
The end face of fire-protection ring 6 is the plane parallel and perpendicular with valve axis with the pivot center of sphere 2.
Bracing ring 5 is the nonmetallic circle for flexibly supporting valve seat insert 4, and the bracing ring 5 in the present embodiment is by poly- four
Vinyl fluoride or nylon are made, and position corresponding with the inner conical surface of valve seat insert 4 is equipped with bracing ring erecting bed 8, valve on valve body 1
Bracing ring 5 is pressed on bracing ring erecting bed 8 by seat sealing ring 4.
Further, the tapered sleeve shape structure of valve seat insert 4 makes valve seat insert 4 and sphere 2 towards the centre of sphere of sphere 2
Between active force towards solid centre, make entity uniform force everywhere, avoid occur excessive deformation, prolong the service life.
Initial assembled state, 4 compressed generation flexible deformation of valve seat insert made of metal, valve seat insert 4
Small end is resisted against on sphere 2, bigger diameter end is pressed on fire-protection ring 6, and the generation of combining closely of nonmetallic coating 7 and sphere 2 is initial close
Envelope；It simultaneously supports circle 5 to be compressed, generates flexible deformation, bracing ring 5 generates sealing with valve body 1 and valve seat insert 4.
After sphere 2 is by medium active force, 2 further compression valve seat sealing ring 4 of sphere, bracing ring 5 is to valve seat insert 4
It is supported, avoids that excessive deformation occurs；When pipeline catches fire, bracing ring 5 and nonmetallic coating 7 are burned out, at this time valve seat
The metal surface of sealing ring 4 is contacted with sphere 2, to effectively completely cut off burning things which may cause a fire disaster, ensures pipe safety.
Compared with the prior art, bracing ring 5 and valve seat insert 4 are simple in structure, and difficulty of processing is low；Bullet need not be set
Spring, need not in valve body processed springs mounting hole, reduce 1 difficulty of processing of valve body；Valve seat insert 4 and bracing ring 5 are mutual
Effect, it is ensured that certain pretightning force ensures that ball valve sealing is reliable；The tapered sleeve shape structure of valve seat insert and the contact surface of sphere
Product is smaller, reduces the torque needed for operation handle, keeps sphere rotation more flexible；After pipeline catches fire and burns nonmetallic coating,
It remains to keep reliably sealing the fire prevention, it can be achieved that real meaning.
In other embodiments, nonmetallic coating can also be arranged on sphere for being in contact with valve seat insert
On surface；Or simultaneously on valve seat insert and sphere setting for another nonmetallic coating contacted in the two.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all answer by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.
Claims (5)
1. combination fire prevention floating ball valve seat, including valve seat insert, bracing ring and fire-protection ring, it is characterised in that：Valve base sealing
Circle is tapered sleeve shape structure made of metal, and tapered sleeve shape structure has bigger diameter end and miner diameter end, and valve seat insert is along valve axis
Direction is arranged and its miner diameter end is resisted against on sphere, on the surface for being in contact with sphere of valve seat insert and/or ball
The surface for being in contact with valve seat insert of body is equipped with nonmetallic coating；Fire-protection ring is graphite circle, close to valve on valve body
The position of the bigger diameter end of seat sealing ring is equipped with fire-protection ring installation cavity, and fire-protection ring is mounted in fire-protection ring installation cavity and by valve base sealing
The bigger diameter end of circle compresses；Bracing ring is nonmetallic circle for flexibly supporting the valve seat insert, on valve body with valve base sealing
The corresponding position of inner conical surface of circle is equipped with bracing ring erecting bed, and bracing ring is pressed on bracing ring erecting bed by valve seat insert
On.
The floating ball valve seat 2. combination according to claim 1 is prevented fires, it is characterised in that：The nonmetallic coating is poly- four
Vinyl fluoride coating, nylon coating or peek coatings.
The floating ball valve seat 3. combination according to claim 1 or 2 is prevented fires, it is characterised in that：The bracing ring is by poly- four
Vinyl fluoride or nylon are made.
The floating ball valve seat 4. combination according to claim 1 or 2 is prevented fires, it is characterised in that：The valve seat insert
The centre of sphere of the tapered sleeve shape structure towards the sphere.
The floating ball valve seat 5. combination according to claim 4 is prevented fires, it is characterised in that：The valve seat insert is used for
The end face for compressing fire-protection ring is the plane parallel and perpendicular with valve axis with the pivot center of sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810590765.3A CN108730560A (en) | 2018-06-09 | 2018-06-09 | Combination fire prevention floating ball valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810590765.3A CN108730560A (en) | 2018-06-09 | 2018-06-09 | Combination fire prevention floating ball valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108730560A true CN108730560A (en) | 2018-11-02 |
Family
ID=63933064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810590765.3A Pending CN108730560A (en) | 2018-06-09 | 2018-06-09 | Combination fire prevention floating ball valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730560A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2540593A1 (en) * | 1983-02-03 | 1984-08-10 | Ind Valves Co Sa | Fire-resistant sealing gasket for steel ball valves |
| CN2470624Y (en) * | 2001-02-27 | 2002-01-09 | 王嘉铭 | Ball valve leak-proof assembly |
| CN201621317U (en) * | 2010-01-19 | 2010-11-03 | 广东明珠流体机械有限公司 | Top assembly type integral inclined surface metal sealing ball valve |
| CN201902591U (en) * | 2010-11-17 | 2011-07-20 | 上海凯莱阀门制造有限公司 | Fixed ball valve |
| CN203670881U (en) * | 2014-01-07 | 2014-06-25 | 西诺威阀门控制（苏州）有限公司 | Low-torque ball valve |
| CN205780990U (en) * | 2015-12-22 | 2016-12-07 | 上海大通自控设备有限公司 | O type fire-proof ball valve |
| CN207111976U (en) * | 2017-08-10 | 2018-03-16 | 西尼（南京）阀门机械有限公司 | A kind of valve component in ball valve |
-
2018
- 2018-06-09 CN CN201810590765.3A patent/CN108730560A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2540593A1 (en) * | 1983-02-03 | 1984-08-10 | Ind Valves Co Sa | Fire-resistant sealing gasket for steel ball valves |
| CN2470624Y (en) * | 2001-02-27 | 2002-01-09 | 王嘉铭 | Ball valve leak-proof assembly |
| CN201621317U (en) * | 2010-01-19 | 2010-11-03 | 广东明珠流体机械有限公司 | Top assembly type integral inclined surface metal sealing ball valve |
| CN201902591U (en) * | 2010-11-17 | 2011-07-20 | 上海凯莱阀门制造有限公司 | Fixed ball valve |
| CN203670881U (en) * | 2014-01-07 | 2014-06-25 | 西诺威阀门控制（苏州）有限公司 | Low-torque ball valve |
| CN205780990U (en) * | 2015-12-22 | 2016-12-07 | 上海大通自控设备有限公司 | O type fire-proof ball valve |
| CN207111976U (en) * | 2017-08-10 | 2018-03-16 | 西尼（南京）阀门机械有限公司 | A kind of valve component in ball valve |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181102 |
|
| WD01 | Invention patent application deemed withdrawn after publication |