CN202280873U - Safety changeover valve - Google Patents
Safety changeover valve Download PDFInfo
- Publication number
- CN202280873U CN202280873U CN2011204342866U CN201120434286U CN202280873U CN 202280873 U CN202280873 U CN 202280873U CN 2011204342866 U CN2011204342866 U CN 2011204342866U CN 201120434286 U CN201120434286 U CN 201120434286U CN 202280873 U CN202280873 U CN 202280873U
- Authority
- CN
- China
- Prior art keywords
- valve
- safety
- flap
- changeover
- changeover 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.)
- Expired - Fee Related
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- Multiple-Way Valves (AREA)
Abstract
The utility model relates to a safety changeover valve, which mainly comprises two safety valves. The two safety valves are respectively arranged on the two outlet channels of a changeover valve. The inlet channel of the changeover valve is arranged on a pressure vessel. A valve seat is respectively arranged inside each outlet channel of the changeover valve. The two valve seats are symmetrically arranged on the two sides of the inlet channel of the changeover valve. A valve flap is arranged between the two valve seats. The center of one plane of the valve flap is fixedly connected with one end of a valve stem, while the other end of the valve stem is fixedly connected with a handwheel after passing through a valve stem nut arranged on one outlet channel. The two lateral planes of the valve flap are respectively provided with a sealing surface. The two sealing surfaces and the two valve seats are mutually matched with each other. Through operating the changeover valve, one safety valve can be opened and the other safety valve can be closed. The safety changeover valve can be maintained and replaced online without the need of shutdown. Therefore, the safety changeover valve can be applied to overpressure protection devices, wherein pressure vessels are operated continuously.
Description
Technical field
The utility model relates to valve field, specifically about a kind of safety valve.The utility model is applicable to the overpressure protector of the boilers and pressure vessel of continuous operation.
Technical background
According to country's " pot rule " regulation; The safety valve front end does not allow to install control type valves such as gate valve, ball valve; To guarantee the safety valve proper functioning,, must shut down, stop production if safety valve needs repairing and changes; Ordinary production is brought very big influence, and can not be applicable to the operating mode use of continuous operation.
Summary of the invention
The purpose of the utility model is the problem that exists to existing technology, provide a kind of can on-line maintenance, the safe switching valve of replacing.
The technological scheme of the utility model comprises safety valve; Mainly be that safety valve has two, be installed in respectively on two outlet passages of a switching valve that the inlet passage of switching valve is installed on the pressurized container; Be shaped on valve seat respectively in two outlet passages of said switching valve; Two valve seats are symmetricly set on switching valve inlet passage both sides, between two valve seats, are provided with flap, and a planar central of this flap is fixedly connected with valve rod one end; The Stem Mut that the valve rod the other end passes on one of them outlet passage is fixedly connected with handwheel, on two side planes of flap, is shaped on the sealing surface that cooperatively interacts with two valve seats respectively.
The utility model has the advantages that and adopt two safety valves to be installed on the pressurized container through switching valve; Can open one of them safety valve through the operation switching valve; Close another safety valve, realize not shutting down on-line maintenance, change safety valve, be applicable to that the operating mode of continuous operation is used.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Safe switching valve as shown in Figure 1 comprises safety valve, and safety valve has two; Adopt spring load formula safety valve; Be installed in respectively on two outlet passages 1,2 of a switching valve, the inlet passage 3 of switching valve is installed on the pressurized container, is shaped on valve seat 4,5 respectively in two outlet passages 1,2 of said switching valve; Two valve seats 4,5 are symmetricly set on switching valve inlet passage 3 both sides; At two valve seats 4, be provided with flap 6 between 5, a planar central of this flap 6 is fixedly connected with valve rod 7 one ends, the Stem Mut 8 that valve rod 7 the other ends pass on one of them outlet passage 1 is fixedly connected with handwheel 9; Stem Mut 8 is installed in through support on the tube wall of this outlet passage 1, is provided with stuffing box packing 10 between the tube wall of valve rod 7 and this outlet passage 1.On two side planes of flap 6, be shaped on the sealing surface that cooperatively interacts with two valve seats 4,5 respectively.Handwheel 9 through the operation switching valve makes flap 6 cooperate with one of them valve base sealing, closes this safety valve, and opens another safety valve, realizes not shutting down on-line maintenance, changes safety valve, is applicable to that the operating mode of continuous operation is used.
Claims (1)
1. safe switching valve; Comprise safety valve; It is characterized in that safety valve has two, be installed in respectively on two outlet passages (1,2) of a switching valve that the inlet passage of switching valve (3) is installed on the pressurized container; Be shaped on valve seat (4,5) respectively in two outlet passages (1,2) of said switching valve; Two valve seats (4,5) are symmetricly set on switching valve inlet passage (3) both sides, between two valve seats (4,5), are provided with flap (6), and a planar central of this flap (6) is fixedly connected with valve rod (7) one ends; The Stem Mut (8) that valve rod (7) the other end passes on one of them outlet passage is fixedly connected with handwheel (9), on two side planes of flap (6), is shaped on the sealing surface that cooperatively interacts with two valve seats (4,5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204342866U CN202280873U (en) | 2011-11-01 | 2011-11-01 | Safety changeover valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204342866U CN202280873U (en) | 2011-11-01 | 2011-11-01 | Safety changeover valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280873U true CN202280873U (en) | 2012-06-20 |
Family
ID=46227042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204342866U Expired - Fee Related CN202280873U (en) | 2011-11-01 | 2011-11-01 | Safety changeover valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280873U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470794A (en) * | 2013-09-13 | 2013-12-25 | 吴江市东吴机械有限责任公司 | Inlet-outlet double-linkage switching valve |
| CN103591334A (en) * | 2013-11-22 | 2014-02-19 | 吴江市东吴机械有限责任公司 | Inlet and outlet double linkage changeover valve |
| CN108591541A (en) * | 2018-06-07 | 2018-09-28 | 超达阀门集团股份有限公司 | A kind of duplex can on-line maintenance injection device |
| CN108679265A (en) * | 2018-06-07 | 2018-10-19 | 超达阀门集团股份有限公司 | It is a kind of can to pressure system injected media and can on-line rinsing and repair device |
| CN108775422A (en) * | 2018-06-07 | 2018-11-09 | 超达阀门集团股份有限公司 | It is a kind of can to pressure system injected media and can on-line maintenance device |
| CN109511260A (en) * | 2016-03-09 | 2019-03-22 | 伟尔矿物澳大利亚私人有限公司 | Valve |
| CN110594452A (en) * | 2019-10-08 | 2019-12-20 | 永一阀门集团有限公司 | On-line switching safety valve |
| CN112324942A (en) * | 2020-11-04 | 2021-02-05 | 上海梅陇阀门有限公司 | Novel sealing compensation device of switching valve |
-
2011
- 2011-11-01 CN CN2011204342866U patent/CN202280873U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470794A (en) * | 2013-09-13 | 2013-12-25 | 吴江市东吴机械有限责任公司 | Inlet-outlet double-linkage switching valve |
| CN103470794B (en) * | 2013-09-13 | 2016-06-22 | 吴江市东吴机械有限责任公司 | Import and export double linkage changeover valve |
| CN103591334A (en) * | 2013-11-22 | 2014-02-19 | 吴江市东吴机械有限责任公司 | Inlet and outlet double linkage changeover valve |
| CN109511260A (en) * | 2016-03-09 | 2019-03-22 | 伟尔矿物澳大利亚私人有限公司 | Valve |
| CN108591541A (en) * | 2018-06-07 | 2018-09-28 | 超达阀门集团股份有限公司 | A kind of duplex can on-line maintenance injection device |
| CN108679265A (en) * | 2018-06-07 | 2018-10-19 | 超达阀门集团股份有限公司 | It is a kind of can to pressure system injected media and can on-line rinsing and repair device |
| CN108775422A (en) * | 2018-06-07 | 2018-11-09 | 超达阀门集团股份有限公司 | It is a kind of can to pressure system injected media and can on-line maintenance device |
| CN108775422B (en) * | 2018-06-07 | 2023-06-27 | 超达阀门集团股份有限公司 | Device capable of injecting medium into pressure system and maintaining on line |
| CN108591541B (en) * | 2018-06-07 | 2023-06-27 | 超达阀门集团股份有限公司 | Injection device that duplex can maintain on line |
| CN108679265B (en) * | 2018-06-07 | 2023-06-27 | 超达阀门集团股份有限公司 | Device capable of injecting medium into pressure system and on-line flushing and maintenance |
| CN110594452A (en) * | 2019-10-08 | 2019-12-20 | 永一阀门集团有限公司 | On-line switching safety valve |
| CN112324942A (en) * | 2020-11-04 | 2021-02-05 | 上海梅陇阀门有限公司 | Novel sealing compensation device of switching 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20181101 |