CN202790593U - High temperature balanced type stop valve - Google Patents
High temperature balanced type stop valve Download PDFInfo
- Publication number
- CN202790593U CN202790593U CN 201220507341 CN201220507341U CN202790593U CN 202790593 U CN202790593 U CN 202790593U CN 201220507341 CN201220507341 CN 201220507341 CN 201220507341 U CN201220507341 U CN 201220507341U CN 202790593 U CN202790593 U CN 202790593U
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- China
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- valve
- liner
- grommet
- valve body
- ring
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- Expired - Fee Related
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- Details Of Valves (AREA)
Abstract
The utility model discloses a high temperature balanced type stop valve which is characterized by comprising a valve body, a valve cover, a valve seat, a liner pad, a liner ring, a valve rod and a valve clack. The valve cover covers above a valve cavity of the valve body and is connected fixedly with the valve body. The valve seat, the liner pad and the liner ring are arranged vertically in an inner hole of the valve cavity. The liner ring is connected with the valve body in a threaded mode. The valve clack and the valve rod are connected with each other and are arranged movably in an inner hole of the liner pad and an inner hole of the liner ring. The connection portion of the inner hole of the liner ring and the inner hole of the liner pad is provided with a ring-shaped groove. A sealing ring is placed in the ring-shaped groove. The sealing ring is pressed tightly by the liner ring. A motive seal is formed between the sealing ring pressed tightly and an external circle of the valve clack. The liner pad is provided with a throttling window. A balanced hole is formed in the liner clack. The balanced hole is communicated with an inlet flow channel of the valve body and a valve cavity arranged above the valve clack. The high temperature balanced type stop valve is suitable for conveying of water, steam, oils, gas and other media with the temperature <=540DEG C and has the advantages of being good in sealing, long in service life, small in hoisting capacity and the like.
Description
Technical field
The utility model relates to a kind of valve, is specifically related to a kind of improvement invention of high temperature balanced type break valve.
Background technique
Stop valve also is pipe valve, is most popular a kind of valve, and why very popular it is, that Lift is little, and is easy to manufacture owing to frictional force between the sealing surface in the switching process is little, more durable, easy to maintenance, be not only applicable to mesolow, and be applicable to high pressure.Stop valve refers to closure member (flap) along the valve of valve seat center line traveling priority, and the open-shut device of stop valve is the flap of stopper, and sealing surface is plane or the conical surface.The closed principle of stop valve is that dependence valve thick stick pressure fits tightly valve clack sealing surface and sealing surface of seat, stops the medium circulation.In the prior art, in the high temperature break valve of the sector applications such as oil, chemical industry, metallurgy, power station (normal operation is in the conveying occasion of the media such as the water of temperature≤540 ° C, steam, oil product, rock gas), the deficiency that the ubiquity sealing reliability is relatively poor, working life is short, the hoisting capacity that is exactly in addition high temperature break valve is large, and the pressure balance technology of using in Subzero valve can not be applied in High temperature valve.
Summary of the invention
Problem in view of present known technology existence, the technical problems to be solved in the utility model is the conveying of the media such as the water that is to provide a kind of Applicable temperature≤540 ° C, steam, oil product, rock gas, has the high temperature balanced type break valve of the advantages such as good seal, long service life, hoisting capacity be little.
The utility model is implemented by the following technical programs:
The high temperature balanced type break valve, it is characterized in that: comprise valve body, valve gap, valve seat, liner, grommet, valve rod and flap, valve gap covers above the valve pocket of valve body and is fixedly connected with valve body, valve seat, liner and grommet are setting up and down at the valve pocket endoporus, grommet is connected with valve body screw thread, flap is connected and is actively installed on the endoporus of liner and grommet with valve rod, the junction of grommet endoporus and liner endoporus is provided with annular groove, place seal ring in the annular groove, seal ring is compressed by grommet, form motive sealing between seal ring after the compression and the cylindrical of flap, described liner is provided with the throttling window, described flap is provided with equalizing orifice, and equalizing orifice is communicated with the inlet channel of valve body and the valve pocket of flap top.Described annular groove is formed by the counterbore of grommet lower end surface and the boss winding of liner upper-end surface, and the boss top puts in counterbore, and the gap is left in grommet lower end surface and liner upper-end surface.Described valve seat, insert are located at the valve pocket endoporus, are provided with seal ring between valve seat bottom surface and the valve body and seal.Grommet is sealed by sealing gasket with the port that is threaded of valve body, and sealing gasket is compressed by clamping sleeve, and clamping sleeve is connected with valve body screw thread.Seal ring and seal ring adopt the Expanded graphite packing ring of inner liner stainless steel steel wire.
The stop valve of technique scheme, innovative point 1: because the setting of seal ring, forming good sealing above valve outlet runner and the flap between the valve pocket, owing to guaranteed that valve internal does not leak, so the pressure balance technology in the Subzero valve just can be applied in the High temperature valve, also just can offer the equalizing orifice that is communicated with valve pocket above valve body inlet channel and the flap at flap, after offering equalizing orifice, the hoisting capacity of valve will diminish, switch is light, flap is not subject to wash away, shake little, noise is low, improves sealing reliability and the working life of valve.Innovative point 2: the circular groove structure of placing seal ring is reasonable, can axially adjust size seal ring is carried out suitable compression, and the seal ring inner ring diameter after compressing can suitably shrink, guarantee and the flap cylindrical between the appropriateness of motive sealing with reliable.Innovative point 3: valve seat, insert are located at the valve pocket endoporus, being provided with seal ring between valve seat bottom surface and the valve body seals, the convertibility that above-mentioned design has at first solved valve seat is connected the prior art valve seat and is adopted welding manner to be connected with valve body with servicing ease), prolong valve working life, next has guaranteed the sealing of valve seat self.Innovative point 4: be provided with sealing gasket at grommet with the port that is threaded of valve body and seal, also to a certain degree guaranteed the sealing reliability of whole valve.Innovative point 5: seal ring and seal ring adopt the Expanded graphite packing ring of inner liner stainless steel steel wire, the intensity toughness is not only arranged, and good deformability and low friction factor are arranged, and guarantee the reliability of valve motive sealing and static seal.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model
Fig. 2 is the A section enlarged view among Fig. 1.
Embodiment
Describe details and the working principle of the utility model specific embodiment in detail below in conjunction with accompanying drawing:
As shown in the figure, high temperature balanced type break valve of the present utility model, comprise valve body 13, valve gap 1, valve seat 11, liner 9, grommet 6, valve rod 19 and flap 15, valve gap 1 covers above the valve pocket of valve body 13 and is bolted to connection with valve body 13, valve gap 1 is provided with octagonal ring sealing 3 with the junction plane of valve body 13, valve seat 11, liner 9 and grommet 6 are setting up and down at the valve pocket endoporus, valve seat 11, liner 9 is set in the valve pocket endoporus, being provided with seal ring 12 between valve seat 11 bottom surfaces and the valve body 13 seals, grommet 6 is connected by screw thread 5 with valve body 13, flap 15 is connected and is actively installed on the endoporus of liner 9 and grommet 6 with valve rod 19, the junction of grommet 6 endoporus and liner 9 endoporus is provided with annular groove, described annular groove is formed by the counterbore 6a of grommet 6 lower end surfaces and the boss 9a winding of liner 9 upper-end surfaces, boss 9a top puts in counterbore 6a, adjustable gap 8 is left in grommet 6 lower end surfaces and liner 9 upper-end surfaces, place seal ring 7 in the annular groove, seal ring 7 is compressed by grommet 6, form motive sealing between seal ring 7 after the compression and the cylindrical of flap 15, so effectively guaranteed good sealing between the valve pocket 16 of valve outlet runner 18 and flap top, described liner 9 is provided with throttling window 10, described flap 15 is provided with equalizing orifice 14, equalizing orifice 14 is communicated with the inlet channel 17 of valve body and the valve pocket 16 of flap top, be provided with sealing gasket 4 at grommet 6 with the port that is threaded of valve body 13, sealing gasket 4 carries out press seal by clamping sleeve 2, clamping sleeve 2 is threaded connection described seal ring 7 with valve body 13, seal ring 12 adopts the Expanded graphite packing ring (namely being provided with a lot of thin steel traveler in graphite gasket) of inner liner stainless steel steel wire.
High temperature balanced type break valve of the present utility model, when valve is closed fully, medium flows into valve inner from valve body inlet channel 17, flow into again the valve pocket of lumen 16(flap top by equalizing orifice 14), the pressure medium of lumen and import is equated, make it pressure and reach balance, so valve switch is light, that flap is not subject to wash away, shake is little, noise is low, improves sealing reliability and the working life of valve.
Claims (5)
1. high temperature balanced type break valve, it is characterized in that: comprise valve body, valve gap, valve seat, liner, grommet, valve rod and flap, valve gap covers above the valve pocket of valve body and is fixedly connected with valve body, valve seat, liner and grommet are setting up and down at the valve pocket endoporus, grommet is connected with valve body screw thread, flap is connected and is actively installed on the endoporus of liner and grommet with valve rod, the junction of grommet endoporus and liner endoporus is provided with annular groove, place seal ring in the annular groove, seal ring is compressed by grommet, form motive sealing between seal ring after the compression and the cylindrical of flap, described liner is provided with the throttling window, described flap is provided with equalizing orifice, and equalizing orifice is communicated with the inlet channel of valve body and the valve pocket of flap top.
2. high temperature balanced type break valve as claimed in claim 1, it is characterized in that: described annular groove is formed by the counterbore of grommet lower end surface and the boss winding of liner upper-end surface, and the boss top puts in counterbore, and the gap is left in grommet lower end surface and liner upper-end surface.
3. high temperature balanced type break valve as claimed in claim 1, it is characterized in that: described valve seat, insert are located at the valve pocket endoporus, are provided with seal ring between valve seat bottom surface and the valve body and seal.
4. high temperature balanced type break valve as claimed in claim 1, it is characterized in that: grommet is sealed by sealing gasket with the port that is threaded of valve body, and sealing gasket is compressed by clamping sleeve, and clamping sleeve is connected with valve body screw thread.
5. such as claim 1 or 3 described high temperature balanced type break valves, it is characterized in that: seal ring and seal ring adopt the Expanded graphite packing ring of inner liner stainless steel steel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507341 CN202790593U (en) | 2012-09-29 | 2012-09-29 | High temperature balanced type stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220507341 CN202790593U (en) | 2012-09-29 | 2012-09-29 | High temperature balanced type stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790593U true CN202790593U (en) | 2013-03-13 |
Family
ID=47817858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220507341 Expired - Fee Related CN202790593U (en) | 2012-09-29 | 2012-09-29 | High temperature balanced type stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790593U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514890A (en) * | 2013-09-27 | 2015-04-15 | 中国石油化工集团公司 | Novel throttle valve |
| CN114635973A (en) * | 2022-03-18 | 2022-06-17 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure valve seat-replaceable stop valve |
-
2012
- 2012-09-29 CN CN 201220507341 patent/CN202790593U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104514890A (en) * | 2013-09-27 | 2015-04-15 | 中国石油化工集团公司 | Novel throttle valve |
| CN114635973A (en) * | 2022-03-18 | 2022-06-17 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure valve seat-replaceable stop valve |
| CN114635973B (en) * | 2022-03-18 | 2023-09-12 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure replaceable valve seat stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20150929 |
|
| EXPY | Termination of patent right or utility model |