CN204805595U - Double pressure of ultra -low temperature gate valve sealed firmly - Google Patents
Double pressure of ultra -low temperature gate valve sealed firmly Download PDFInfo
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- CN204805595U CN204805595U CN201520559457.6U CN201520559457U CN204805595U CN 204805595 U CN204805595 U CN 204805595U CN 201520559457 U CN201520559457 U CN 201520559457U CN 204805595 U CN204805595 U CN 204805595U
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- flashboard
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- lumen
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Abstract
The utility model relates to a double pressure of ultra -low temperature gate valve sealed firmly, including valve body, disk seat, flashboard, valve rod, valve gap, the system has a pressure release hole of intercommunication valve body intake channel and lumen on the flashboard, and valve gap and hand wheel fixed connection are passed to the valve rod upper end, and the axial is floated and is connected between valve rod lower extreme and the flashboard, be equipped with the relief valve between valve body lumen and the exit channel, this relief valve is mutually supported by the conical sealing surface of pressure releasing pathway import on valve rod lower extreme toper face sealed firmly and the flashboard and is constituteed, and the pressure releasing pathway import communicates with valve body lumen intercommunication, pressure releasing pathway export and valve body exit channel. The problem of prior art need install the by -pass valve valve body lumen pressure of releasing is solved, its is with low costs, occupy that installation space is little, convenient operation is laborsaving, sealing performance is good. Be applicable to ultra -low temperature, large aperture, the high -pressure medium operating mode of trades such as oil, chemical industry.
Description
Technical field
The utility model belongs to valve field, particularly a kind of gate valve.The utility model is applicable to the ultralow temperature of the industry such as oil, chemical industry, large aperture, high-pressure medium operating mode.
Background technique
The structural type of gate valve mainly contains Wedge gate valve and parallel type flashboard etc., and Wedge gate valve is a kind of structural type more generally used, and utilizes key groove wedging to be sealed and matched between its flashboard and valve seat.When using in ultralow-temperature operation conditions, under valve-closed state, raise to prevent valve body lumen medium temperature and produce abnormal boosting, general employing manufactures the relief hole being communicated with valve body inlet passage and lumen on flashboard, by lumen pressure releasing to valve outlet passage, prevent the abnormal boosting of valve body lumen from security incident occurring; Under heavy caliber, high pressure operating mode, lumen high pressure causes flashboard to open difficulty, traditional valve, in order to solve this difficult problem, often adopts and arrange by-pass collar on valve or pipeline, add cost, increase installing space, open and close two or more valve, operation easier strengthens, and wastes time and energy, add leakage point, reduce sealability.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provide a kind of cost low, take that installing space is little, easy to operate, the hard seal gate valve of the double pressure of the ultralow temperature of good seal performance.
The technical solution of the utility model comprises valve body, valve seat, flashboard, valve rod, valve gap, flashboard is shaped with the relief hole being communicated with valve body inlet passage and lumen, and valve rod upper end is fixedly connected with handwheel through valve gap, and valve rod lower end is connected with axial float between flashboard; Mainly be provided with Decompression valves between valve body lumen and outlet passage, this Decompression valves is cooperatively interacted by the conical seal (contact) face of pressure release passage import on the hard sealing surface of end toper under valve rod and flashboard and forms, pressure release passage import is communicated with valve body lumen, pressure release passage outlet and valve outlet channel connection.
The utility model has the advantages that and be provided with Decompression valves between valve body lumen and outlet passage, when valve opening, valve rod promotes, the hard sealing surface of taper of stem bottom leaves the conical seal (contact) face of pressure release passage import, valve body lumen pressure medium is discharged into valve outlet passage by the pressure release passage on flashboard, when valve rod continues to promote, can easily draw high flashboard to lift off a seat, solve prior art to need to install by-pass valve and to release the problem of valve body lumen pressure, its cost is low, take that installing space is little, easy to operate, good seal performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1 valve body, 2 valve seats, 3 flashboards, 4 valve rods, 5 valve gaps, 6 relief holes, 7 pressure release passages.
Embodiment
The hard seal gate valve of the double pressure of ultralow temperature as shown in Figure 1, comprise valve body 1, valve seat 2, flashboard 3, valve rod 4, valve gap 5, flashboard 3 adopts wedge-shaped structure, flashboard 3 is shaped with the relief hole 6 being communicated with valve body 1 inlet passage and lumen, by valve body 1 lumen and valve body 1 inlet communication, prevent the abnormal boosting of lumen, valve rod 4 upper end is fixedly connected with handwheel through valve gap 5, valve rod 4 lower end is connected with axial float between flashboard 3, namely valve rod 4 axially can move in the connection mouth of flashboard 3 upper-end surface, first valve rod 4 is promoted when valve opening, then drive flashboard 3 to promote together, Decompression valves is provided with between valve body 1 lumen and outlet passage, this Decompression valves is cooperatively interacted by the conical seal (contact) face of pressure release passage 7 import on valve rod 4 times hard sealing surfaces of end toper and flashboard 3 and forms, namely the spool with conical seal (contact) face is made in valve rod 4 lower end, flashboard 3 manufactures the pressure release passage 7 being communicated with valve body 1 lumen and valve body 1 outlet passage, pressure release passage 7 import is positioned at the connection mouth of the flashboard 3 below valve rod 4, there is in the port manufacture of pressure release passage 7 inlet the pressure release valve seat of conical seal (contact) face, the spool of this pressure release valve seat and valve rod 4 lower end cooperatively interacts composition Decompression valves, pressure release passage 7 import is communicated with valve body 1 lumen, pressure release passage 7 outlet is communicated with valve body 1 outlet passage, when valve opening, valve rod 4 first promotes opens Decompression valves, to release cavity pressure in valve body 1, flashboard 3 is driven to promote again, open light.
Claims (1)
1. the hard seal gate valve of the double pressure of ultralow temperature, comprise valve body (1), valve seat (2), flashboard (3), valve rod (4), valve gap (5), flashboard (3) is shaped with the relief hole (6) being communicated with valve body (1) inlet passage and lumen, valve rod (4) upper end is fixedly connected with handwheel through valve gap (5), and between valve rod (4) lower end with flashboard (3), axial float is connected; It is characterized in that valve body (1) is provided with Decompression valves between lumen and outlet passage, this Decompression valves is cooperatively interacted by the conical seal (contact) face of pressure release passage (7) import on the hard sealing surface of end toper under valve rod (4) and flashboard (3) and forms, pressure release passage (7) import is communicated with valve body (1) lumen, and pressure release passage (7) outlet is communicated with valve body (1) outlet passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559457.6U CN204805595U (en) | 2015-07-17 | 2015-07-17 | Double pressure of ultra -low temperature gate valve sealed firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520559457.6U CN204805595U (en) | 2015-07-17 | 2015-07-17 | Double pressure of ultra -low temperature gate valve sealed firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805595U true CN204805595U (en) | 2015-11-25 |
Family
ID=54590424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520559457.6U Active CN204805595U (en) | 2015-07-17 | 2015-07-17 | Double pressure of ultra -low temperature gate valve sealed firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU180853U1 (en) * | 2017-06-08 | 2018-06-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Repair device for lifting the wedge from the valve body |
-
2015
- 2015-07-17 CN CN201520559457.6U patent/CN204805595U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU180853U1 (en) * | 2017-06-08 | 2018-06-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный технологический университет" | Repair device for lifting the wedge from the valve body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200720 Address after: Yongjia Oubei County of Wenzhou City, Zhejiang province 325000 street Dong'ou Industrial Park (Zhejiang Baolong valve manufacturing limited company) Patentee after: Wenzhou Jilong Valve Co., Ltd Address before: Dong'ou Industrial Zone Oubei town of Yongjia County, Wenzhou City, Zhejiang province 325102 Patentee before: ZHEJIANG PORO VALVE MANUFACTURING Co.,Ltd. |