CN107654673A - HTHP three eccentric metal sealed butterfly valve - Google Patents
HTHP three eccentric metal sealed butterfly valve Download PDFInfo
- Publication number
- CN107654673A CN107654673A CN201711036434.7A CN201711036434A CN107654673A CN 107654673 A CN107654673 A CN 107654673A CN 201711036434 A CN201711036434 A CN 201711036434A CN 107654673 A CN107654673 A CN 107654673A
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing ring
- sealing
- ring
- valve plate
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 124
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012856 packing Methods 0.000 description 4
- 230000003292 diminished effect Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000001105 regulatory effect Effects 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention belongs to valve technology field, it is related to a kind of HTHP three eccentric metal sealed butterfly valve, including valve body, valve rod is rotationally connected with valve body by bearing, valve plate is arranged on valve rod, valve seat is formed in valve body cavity body, pass through the first sealing ring of mutual cooperation between valve plate and valve seat, second sealing ring realizes sealing, correspond on valve plate at the first sealing ring and sealed by metal o-ring, correspond on valve plate at the second sealing ring and sealed by wound gasket, first sealing ring is pressed on valve plate by the second sealing ring, second sealing ring is fixed on valve plate by trim ring.The butterfly valve can solve the problems, such as that valve opening torque at high temperature under high pressure is excessive, while in turn ensure that the sealing effectiveness of valve.
Description
Technical field
The invention belongs to valve technology field, is related to a kind of HTHP three eccentric metal sealed butterfly valve.
Background technology
Butterfly valve is due to being valve with fastest developing speed in recent ten years with good flow regulating function and closing sealing characteristics
One of door kind.The use range of butterfly valve is very extensive.Its kind used and quantity still are continuing to expand, and to high temperature, height
Pressure, heavy caliber, high leakproofness, long-life, excellent control characteristic, and the multi-functional development of a valve.Its reliability and other property
Energy index reaches higher level.The sealing pair design of existing three eccentric metal sealed butterfly valve can reach good in normal temperature
Sealing effectiveness, but in the case where HTHP acts on simultaneously, sealing ring expands deformation, then in the presence of pressure medium and valve
Occur swollen dead between seat, cause valve to open torque and increase extremely, executing agency does not open valve；It is also possible to sealing ring
Deformation, causes leakage amount abnormity to increase.
The content of the invention
In view of the above-mentioned problems, providing a kind of HTHP three eccentric metal sealed butterfly valve, the butterfly valve can solve the present invention
The problem of valve opening torque at high temperature under high pressure is excessive, while in turn ensure that the sealing effectiveness of valve.
According to technical scheme：A kind of HTHP three eccentric metal sealed butterfly valve, including valve body, its feature exist
In：Valve rod is rotationally connected with valve body by bearing, and valve plate is arranged on valve rod, valve seat, valve plate and valve seat are formed in valve body cavity body
Between sealing realized by the first sealing ring of mutual cooperation, the second sealing ring, correspond on valve plate at the first sealing ring and pass through
Metal o-ring seals, and corresponds on valve plate at the second sealing ring and is sealed by wound gasket, and the first sealing ring passes through the second sealing
Circle is pressed on valve plate, and the second sealing ring is fixed on valve plate by trim ring.
As a further improvement on the present invention, first sealing ring includes the first sealing ring base portion and is integrally connected to institute
State the first sealing ring sealing of the first sealing ring base portion outer ring, the radial outside inclined-plane compression fit of the first sealing ring sealing
In on valve seat, the first sealing ring base portion is pressed on metal o-ring；Second sealing ring includes the second sealing ring base portion and one
The second sealing ring compressed part of the second sealing ring base portion outer ring is connected to, the second sealing ring pressed parts are in the second sealing ring
At axial outer end, the second sealing ring compressed part is pressed on the first sealing ring base portion, and the second sealing ring base portion is pressed in wound gasket
On.
As a further improvement on the present invention, the trim ring is fixed on valve plate by screw.
As a further improvement on the present invention, the valve body side by end cap by valve stem seal in valve body, valve rod is another
One end is stretched out from valve body.
The technical effects of the invention are that：Should sealing pair design employ the design of big small sealing ring double-layer seal, protect
Sealing effectiveness is demonstrate,proved；Wherein large sealing packing ring size of seal contact face is less than actual closure size, and in low pressure, small sealing ring and valve seat enter
Row sealing ensures sealing effectiveness；In high pressure, by the pressure of medium, and bearing and valve rod have the reason in gap, valve plate and valve
Bar is overall to be moved to sealed sides, and in moving process, small sealing ring occurs elastic deformation and diminished, large sealing packing ring and valve seat contact,
Play main seal, ensure sealing effectiveness；In high pressure, because valve plate and valve rod can have enough mobile spaces to bearing
Place's contact, allows bearing to bear most of pressure of medium, and the power at large sealing packing ring sealing surface is relatively small, ensure that valve torque
Will not be excessive；In high temperature, sealing ring can expand, large sealing packing ring less than size of seal contact face ensure that sealing pair between will not
Swollen dead phenomenon, causes valve not open.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the partial enlarged drawing at I in Fig. 1.
Embodiment
The embodiment of the present invention is further described below in conjunction with the accompanying drawings.
In Fig. 1,2, including valve body 1, valve plate 2, valve rod 3, bearing 4, trim ring 5, the first sealing ring 6, the first sealing ring base portion
6-1, the first sealing ring sealing 6-2, the second sealing ring 7, the second sealing ring base portion 7-1, the second sealing ring compressed part 7-2, twine
Around pad 8, metal o-ring 9, end cap 10 etc..
As shown in Figure 1, 2, the present invention is a kind of HTHP three eccentric metal sealed butterfly valve, including valve body 1, and valve rod 3 is logical
Cross bearing 4 to be rotationally connected with valve body 1, valve plate 2 is arranged on valve rod 3, valve seat is formed in the cavity of valve body 1, between valve plate 2 and valve seat
Sealing is realized by the first sealing ring 6 of mutual cooperation, the second sealing ring 7, corresponds on valve plate 2 at the first sealing ring 6 and passes through
Metal o-ring 9 seals, and corresponds on valve plate 2 at the second sealing ring 7 and is sealed by wound gasket 8, the first sealing ring 6 passes through second
Sealing ring 7 is pressed on valve plate 2, and the second sealing ring 7 is fixed on valve plate 2 by trim ring 5.
First sealing ring 6 includes the first sealing ring base portion 6-1 and is integrally connected to the first sealing ring base portion 6-1 outer rings
The first sealing ring sealing 6-2, the first sealing ring sealing 6-2 radial outside inclined-plane compression fit on valve seat, first
Sealing ring base portion 6-1 is pressed on metal o-ring 9；Second sealing ring 7 includes the second sealing ring base portion 7-1 and is integrally connected to
Second sealing ring compressed part 7-2, the second sealing ring compressed part 7-2 of the second sealing ring base portion 7-1 outer rings is close positioned at second
At the axial outer end of seal 7, the second sealing ring compressed part 7-2 is pressed on the first sealing ring base portion 6-1, the second sealing ring base portion 7-
1 is pressed on wound gasket 8.
Trim ring 5 is fixed on valve plate 2 by screw.
Valve rod 3 is sealed in valve body 1 by the side of valve body 1 by end cap 10, and the other end of valve rod 3 stretches out from valve body 1.
Product of the present invention employs the design of big small sealing ring double-layer seal, wherein the size of seal contact face of the second sealing ring 7
Less than actual closure size, in low pressure, the first sealing ring 6 and valve seat carry out sealing guarantee sealing effectiveness；
Because the valve is high-temperature valve, there is larger gap in valve rod 3 and bearing 4, in high pressure, by the pressure of medium, valve plate 2
Overall to sealed sides movement with valve rod 3, in moving process, the first sealing ring 6 occurs elastic deformation and diminished, the second sealing ring 7
Contacted with valve seat, play main seal, ensure sealing effectiveness；
In high pressure, because valve plate 2 and valve rod 3 there can be contact at enough mobile spaces to bearing 4, allow bearing to hold 4 and be situated between
Most of pressure of matter, the power at the sealing surface of the second sealing ring 7 is relatively small, ensure that valve torque will not be excessive；
In high temperature, sealing ring can expand, the second sealing ring 7 less than size of seal contact face ensure that sealing pair between will not be swollen
Dead phenomenon, causes valve not open.
Claims (4)
1. a kind of HTHP three eccentric metal sealed butterfly valve, including valve body（1）, it is characterised in that：Valve rod（3）Pass through bearing
（4）It is rotationally connected with valve body（1）On, valve rod（3）On be arranged valve plate（2）, valve body（1）Valve seat, valve plate are formed in cavity（2）With valve
Pass through the first sealing ring of mutual cooperation between seat（6）, the second sealing ring（7）Realize sealing, valve plate（2）It is upper close corresponding to first
Seal（6）Place passes through metal o-ring（9）Sealing, valve plate（2）It is upper to correspond to the second sealing ring（7）Place passes through wound gasket（8）It is close
Envelope, the first sealing ring（6）Pass through the second sealing ring（7）It is pressed in valve plate（2）On, the second sealing ring（7）Pass through trim ring（5）Compress
It is fixed on valve plate（2）On.
2. HTHP three eccentric metal sealed butterfly valve as claimed in claim 1, it is characterised in that：First sealing ring
（6）Including the first sealing ring base portion（6-1）And it is integrally connected to the first sealing ring base portion（6-1）First sealing ring of outer ring
Sealing（6-2）, the first sealing ring sealing（6-2）Radial outside inclined-plane compression fit on valve seat, the first sealing cycle basis
Portion（6-1）It is pressed in metal o-ring（9）On；Second sealing ring（7）Including the second sealing ring base portion（7-1）And it is integrally connected to
The second sealing ring base portion（7-1）Second sealing ring compressed part of outer ring（7-2）, the second sealing ring compressed part（7-2）It is located at
Second sealing ring（7）At axial outer end, the second sealing ring compressed part（7-2）It is pressed in the first sealing ring base portion（6-1）On, second
Sealing ring base portion（7-1）It is pressed in wound gasket（8）On.
3. HTHP three eccentric metal sealed butterfly valve as claimed in claim 1, it is characterised in that：The trim ring（5）Pass through
Screw is fixed on valve plate（2）On.
4. HTHP three eccentric metal sealed butterfly valve as claimed in claim 1, it is characterised in that：The valve body（1）Side
Pass through end cap（10）By valve rod（3）It is sealed in valve body（1）It is interior, valve rod（3）The other end is from valve body（1）Middle stretching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711036434.7A CN107654673A (en) | 2017-10-30 | 2017-10-30 | HTHP three eccentric metal sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711036434.7A CN107654673A (en) | 2017-10-30 | 2017-10-30 | HTHP three eccentric metal sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107654673A true CN107654673A (en) | 2018-02-02 |
Family
ID=61095863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711036434.7A Pending CN107654673A (en) | 2017-10-30 | 2017-10-30 | HTHP three eccentric metal sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107654673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916397A (en) * | 2018-09-06 | 2018-11-30 | 温州上沃阀门科技有限公司 | The valve plate of eccentric hard sealed flygate seals installing mechanism |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19530579A1 (en) * | 1995-02-08 | 1996-08-14 | Schmitz & Schulte Gmbh & Co Kg | Butterfly valve for high-temperature media |
| KR200254812Y1 (en) * | 2001-08-31 | 2001-12-01 | 이정수 | Double sealing metal seat for butterfly valve |
| KR20110066259A (en) * | 2009-12-11 | 2011-06-17 | 주식회사 은광이노텍 | Double sealing structure for butterfly valve |
| CN204025712U (en) * | 2014-07-29 | 2014-12-17 | 铁岭天工阀门科技有限公司 | One-sided soft or hard double seals butterfly valve |
| CN204878769U (en) * | 2015-08-19 | 2015-12-16 | 国工阀门有限公司 | High pressure gas piping butterfly valve |
| CN207316095U (en) * | 2017-10-30 | 2018-05-04 | 东华工程科技股份有限公司 | High temperature and pressure three eccentric metal sealed butterfly valve |
-
2017
- 2017-10-30 CN CN201711036434.7A patent/CN107654673A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19530579A1 (en) * | 1995-02-08 | 1996-08-14 | Schmitz & Schulte Gmbh & Co Kg | Butterfly valve for high-temperature media |
| KR200254812Y1 (en) * | 2001-08-31 | 2001-12-01 | 이정수 | Double sealing metal seat for butterfly valve |
| KR20110066259A (en) * | 2009-12-11 | 2011-06-17 | 주식회사 은광이노텍 | Double sealing structure for butterfly valve |
| CN204025712U (en) * | 2014-07-29 | 2014-12-17 | 铁岭天工阀门科技有限公司 | One-sided soft or hard double seals butterfly valve |
| CN204878769U (en) * | 2015-08-19 | 2015-12-16 | 国工阀门有限公司 | High pressure gas piping butterfly valve |
| CN207316095U (en) * | 2017-10-30 | 2018-05-04 | 东华工程科技股份有限公司 | High temperature and pressure three eccentric metal sealed butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916397A (en) * | 2018-09-06 | 2018-11-30 | 温州上沃阀门科技有限公司 | The valve plate of eccentric hard sealed flygate seals installing mechanism |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |