CN2400650Y - Hard sealing high-temperature ball valve - Google Patents
Hard sealing high-temperature ball valve Download PDFInfo
- Publication number
- CN2400650Y CN2400650Y CN 99253149 CN99253149U CN2400650Y CN 2400650 Y CN2400650 Y CN 2400650Y CN 99253149 CN99253149 CN 99253149 CN 99253149 U CN99253149 U CN 99253149U CN 2400650 Y CN2400650 Y CN 2400650Y
- Authority
- CN
- China
- Prior art keywords
- valve
- ball valve
- sealing
- ring
- valve seat
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000013013 elastic material Substances 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 abstract description 2
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
A hard-sealed high-temp ball valve is composed of flange, valve body, valve rod, ball valve, valve seat, angle-type metal sealing ring and rectangular ring slot, and features that a rectangular ring slot is made on the upper end surface of valve seat and a V-shaped sealing ring made of non-metal elastic material is pressed in it, and several air returning holes are made in the ring body of valve seat. The hard-sealing high-temperature ball valve adopts a double-sleeve sealing structure which is composed of a metal material and an elastic material and has the double sealing functions of low-pressure soft sealing and high-pressure hard sealing, and adopts the pressure of the system to expand the lip of the V-shaped seal to form self sealing.
Description
The utility model relates to a kind of ball valve, especially a kind of hard sealing high-temperature ball valve.
Hard sealing high-temperature ball valve mainly is applicable to industrial systems such as oil, letter shoot line and power station, chemical industry, metallurgy, and it has advantages such as high temperature resistant, anticorrosive, applied widely, that operation is nimble.Existing hard seal ball valve mainly is made up of parts such as valve body, ball valve, valve seat, seal rings, Chinese patent ZL91219032.9 discloses a kind of metal seal ball valve of high-temperature-resistant high-pressure-resistant, be characterized in that the metal seal that adopts the thin-walled cyclic metal piece will expand distortion under interior pressure effect seals, improve sealability; " Chinese mechanical industry scientific and technological achievement circular " reported the technological achievement of the high-temperature wearable electric ball valve of Shanghai Nai Laisi James valve Co., Ltd development for No. 9509158, and this ball valve adopts fixedly ball, hard sealing, and the spring compensation is adopted at the valve seat back side.Mostly adopt single metallic seal in domestic metal seal ball valve of having developed or the hard seal ball valve, in the environment that contains media such as sand grains impurity, thick slurry or high temperature soda acid, suffer the scratch sealing surface of sand grains impurity easily and cause the seepage phenomenon; And valve in use system pressure high-leakage may be big more more.
Task of the present utility model is that a kind of improved hard sealing high-temperature ball valve will be provided, and it can be high temperature resistant, anticorrosive, can bring into play the better seal performance again in sand grains impurity, thick slurry medium, and reason sand grains impurity does not abrade sealing surface and causes the seepage phenomenon.
For this reason, the utility model provides a kind of hard sealing high-temperature ball valve, form by flange, valve body, valve rod, ball valve, valve seat, angie type metal o-ring, ring-type rectangle groove, and on valve seat outer shroud upper-end surface, open one the ring-type rectangle groove, and be pressed into the V-type annular seal ring that a non-metallic elastic material is made; In the seat ring body, have several return-air holes in addition.A kind of preferred forms as technique scheme: the V-type opening angle of V-type annular seal ring is got 90 degree; Return-air hole shape in the seat ring body adopts L type opening.
Below with reference to accompanying drawing the utility model is described in further detail;
Fig. 1 is a kind of concrete structure sectional view that seals high-temperature ball valve firmly
Fig. 2 is the valve seat construction sectional view that seals high-temperature ball valve firmly
Fig. 3 is the structure sectional view of V-type annular seal ring
As shown in Figure 1, this seals high-temperature ball valve firmly and mainly is made up of flange 1, valve body 2, valve rod 3, ball valve 4, valve seat 5, angie type metal o-ring 6, ring-type rectangle groove 7 etc.Sealing and two links of external sealed in the quality of ball valve sealability mainly shows.On the one hand be exactly so-called in sealing to get well, promptly during valve closing, medium can not flow into outlet end from entrance point.When valve was in closed condition, high temperature media flowed into outlet end by ball valve 4, because ball valve 4 is in quick condition in valve body 2, therefore, ball valve 4 relies on outlet end valve seat 5 under the promotion of medium, thereby realizes the sealing of ball valve 4 and valve seat 5, stops passing through of medium.Be exactly that so-called external sealed will be got well on the other hand, promptly during valve closing, medium can not flow out to the valve outside from any position of valve.In the prior art scope, common metal seal ball valve or hard seal ball valve are in the normal method that is pressed into the expanded graphite circle that adopts of the valve rod 3 and the encapsulation process of valve body 2, and its sealability is more reliable; But on the encapsulation process method at valve body 2 and flange 1 place, mostly adopt single metallic seal, sand grains impurity scratch sealing surface easily takes place and cause the seepage phenomenon.As shown in Figure 2, the utility model adopts two cover elastic metallic sealing seats, has the double seal function.On valve seat 5 outer shroud upper-end surfaces, open the ring-type rectangle groove one on the one hand, and be pressed into the V-type annular seal ring 8 that a non-metallic elastic material is made; In valve seat 5 annular solids, have several return-air holes 9.Because V-shaped seal ring 8 is adopted in valve seat 5 periphery sealings, expansion seals after being subjected to pretightening force, if lumen has pressure medium to infiltrate, V-type lip 10 is opened play the elastic packing effect, make the effect of high temperature elastic packing performance cleaning sand grains impurity, make metallic seal better finish the sealability requirement; And the offering of return-air hole 9, the one, in order to eliminate the dangerous influence that issuable pressure expansion brings.The 2nd, the variable of general ball valve added preset load, be improved to the constant prefastening load that adds of utilization system pressure feedback, changed valve in operating mode is used system pressure that high-leakage may be big more more is often regular, it is high more to reach system pressure, feedback pressure is big more, form better seal pressure, impel sealing more reliable.Shown in Fig. 2,3, be a kind of a kind of preferred forms of this valve, the V-type opening angle of V-type annular seal ring 8 is got 90 degree; Return-air hole 9 shapes in valve seat 5 annular solids adopt L type opening.
Should hard sealing high-temperature ball valve since adopted that metallic material adds that elastic material forms have two cover sealing configurations that low pressure soft seal and high pressure seal the double seal function firmly, and adopted the pressure of system self, lip to V-seal is expanded, to form selfsealings, its structure uniqueness is a kind of ball valve that is suitable for high temperature and has the keying of graininess medium.
Claims (3)
1, a kind of hard sealing high-temperature ball valve, form by flange (1), valve body (2), valve rod (3), ball valve (4), valve seat (5), angie type metal o-ring (6), ring-type rectangle groove (7), it is characterized in that: on valve seat (5) outer shroud upper-end surface, open the ring-type rectangle groove one, and be pressed into the V-ring shape seal ring (8) that a non-metallic elastic material is made; In valve seat (5) annular solid, have several return-air holes (9).
2, hard sealing high-temperature ball valve according to claim 1 is characterized in that: the V-type opening angle of described V-type annular seal ring (8) is 90 degree.
3, hard sealing high-temperature ball valve according to claim 1 is characterized in that: described return-air hole (9) shape is a L type opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253149 CN2400650Y (en) | 1999-11-12 | 1999-11-12 | Hard sealing high-temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253149 CN2400650Y (en) | 1999-11-12 | 1999-11-12 | Hard sealing high-temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2400650Y true CN2400650Y (en) | 2000-10-11 |
Family
ID=34037119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99253149 Expired - Lifetime CN2400650Y (en) | 1999-11-12 | 1999-11-12 | Hard sealing high-temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2400650Y (en) |
Cited By (5)
| 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 |
| CN101285533B (en) * | 2007-04-11 | 2013-03-13 | 意大利泰科阀门股份有限公司 | Metal base with high temperature fuild valve |
| CN103363145A (en) * | 2013-07-31 | 2013-10-23 | 东方电气集团东风电机有限公司 | Hydropower station inlet ball valve high oil pressure operation hard sealing structure |
| CN105202259A (en) * | 2015-10-14 | 2015-12-30 | 德阳华林仪表有限公司 | Full-function high-pressure valve sealing structure |
| CN108603608A (en) * | 2015-12-08 | 2018-09-28 | 达希尔阀门公司 | Valve for hex holding vessel |
-
1999
- 1999-11-12 CN CN 99253149 patent/CN2400650Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285533B (en) * | 2007-04-11 | 2013-03-13 | 意大利泰科阀门股份有限公司 | Metal base with high temperature fuild valve |
| 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 |
| CN102080732B (en) * | 2009-12-01 | 2016-03-16 | 凯撒博内蒂股份公司 | For ball valve metal seal and comprise the ball valve of the seal |
| CN103363145A (en) * | 2013-07-31 | 2013-10-23 | 东方电气集团东风电机有限公司 | Hydropower station inlet ball valve high oil pressure operation hard sealing structure |
| CN103363145B (en) * | 2013-07-31 | 2016-09-07 | 东方电气集团东风电机有限公司 | Hydropower station water inlet ball valve height hydraulic operation hard sealing structure |
| CN105202259A (en) * | 2015-10-14 | 2015-12-30 | 德阳华林仪表有限公司 | Full-function high-pressure valve sealing structure |
| CN108603608A (en) * | 2015-12-08 | 2018-09-28 | 达希尔阀门公司 | Valve for hex holding vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |