CN1940363A - High-pressure by-pass valve - Google Patents
High-pressure by-pass valve Download PDFInfo
- Publication number
- CN1940363A CN1940363A CN 200510030074 CN200510030074A CN1940363A CN 1940363 A CN1940363 A CN 1940363A CN 200510030074 CN200510030074 CN 200510030074 CN 200510030074 A CN200510030074 A CN 200510030074A CN 1940363 A CN1940363 A CN 1940363A
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- China
- Prior art keywords
- valve
- bypass channel
- chamber
- pressure
- main passage
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Abstract
The invention comprises a valve body and main and bypass channel cavities formed on the valve body. The main channel cavity includes an inlet and an outlet and the bypass channel cavity has an outlet. A valve clack following a valve stem moves longitudinally in the valve body. In the bypass channel cavity is disposed a cage-type valve seat with several throttle orifices on the cylinder wall of the valve clack. At the bottom of the valve seat is disposed a seal seat fit with the valve clack and on the top of the valve seat is fixed a valve cover. The valve extends through the valve cover.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of high-pressure by-pass valve.
Background technique
Generally, high-pressure by-pass valve is used in the power station, with the supporting use of steam turbine; Particularly, the entrance and exit that is installed in feed water system of boiler high-pressure heater is sentenced respectively and is added bypass inlet valve and Gao Jia bypass outlet valve as height.When proper functioning, the flap of inlet valve and outlet valve is in the upper end, and water enters downwards from the import of inlet valve, enters heater through the main passage.When high-pressure heater broke down, flap was closed the main passage rapidly, opened the bypass line of high adding system, and water flow to bypass and do not enter high-pressure heater, and directly enters boiler by bypath system.Yet because when breaking down, valve cut out in moment, therefore existing high-pressure by-pass valve exists high noisy, defective that vibration is big, poor stability.
Summary of the invention
Given this, the object of the present invention is to provide a kind of high-pressure by-pass valve, have and dam and the buffering effect, noise is low when therefore closing in moment, vibration is little, good stability.
For achieving the above object, the invention provides a kind of high-pressure by-pass valve, comprising: a valve body, be formed with two chambers of connection on the described valve body, comprise main passage chamber and bypass channel chamber, described main passage chamber comprises an inlet and an outlet, and described bypass channel chamber has an outlet; One flap vertically moves in described valve body with a valve rod, when being in the extreme higher position, bypass channel chamber and main passage chamber is separated, and opens the main passage; When being in extreme lower position, the main passage is closed, the bypass channel chamber is communicated with the main passage chamber, bypass channel is in open mode; Wherein, in described bypass channel chamber, be provided with a cage type valve seat, described cage type valve cover for seat is located in the valve body of described bypass channel chamber, the barrel of described cage type valve seat is provided with a plurality of throttle orifices, the lower end of described valve seat is provided with sealing seat to cooperate with described flap, and its upper end is equipped with a valve gap, and described valve rod extends through valve gap.
Preferably, described cage type valve seat is a hollow cylinder.
Preferably, described throttle orifice is circular.
Preferably, described throttle orifice is square.
Preferably, described valve gap is welded in the upper end of described cage type valve seat.
Preferably, described valve body is spherical for connecting.
Compared with prior art, high-pressure by-pass valve of the present invention is owing to be provided with the cage type valve seat in valve body, this valve seat is provided with throttle orifice, when the instant water in the pipeline entered in the bypass channel chamber, because the cage type valve seat has been divided into this chamber inside and outside two parts, water was introduced into interior space like this, enter the external space by throttle orifice then and flow into bypass channel again, therefore can play buffer function, reduce the vibration that water impact causes, thereby make working stability safe and reliable.
Description of drawings
Fig. 1 is the sectional view of high-pressure by-pass valve of the present invention;
Fig. 2 is valve seat first embodiment in embodiment illustrated in fig. 1;
Fig. 3 is valve seat second embodiment in embodiment illustrated in fig. 1.
Embodiment
As shown in Figure 1, among the figure be the sectional view of high-pressure by-pass valve of the present invention.This valve comprises a valve body 1, be formed with two chambers of connection on the valve body 1, its middle chamber I is the main passage chamber, this chamber comprises an inlet A and an outlet B, and when adding the bypass inlet valve as height, inlet A links to each other with inlet pipeline, outlet B links to each other with the high-pressure heater inlet, when adding the bypass outlet valve as height, inlet A links to each other with the high-pressure heater outlet, and outlet B links to each other with boiler; Chamber II is the bypass channel chamber, and this chamber is communicated with the main passage chamber, and a by-pass port C is arranged, and this by-pass port C links to each other with a bypass channel.
One flap 2 can upper and lowerly move on vertically at valve body 1, and when be in the extreme higher position, soon bypass channel chamber and main passage chamber separate, and open the main passage; When being in extreme lower position, be about to the main passage and close, the bypass channel chamber is communicated with the main passage chamber, bypass channel is in open mode.
In bypass channel chamber II, be provided with a cage type valve seat 3, this cage type valve seat 3 is sheathed in the valve body 1 of bypass channel chamber, and the bypass channel chamber is separated inside and outside two spaces.
As shown in Figure 2, cage type valve seat 3 is a hollow cylinder, on barrel, offer a plurality of circular orifice 31, the lower end of this valve seat is provided with sealing seat 32 to cooperate with flap 2, and its upper end is equipped with a valve gap 4, in the present embodiment, valve gap is welded on the cage type valve seat, be provided with valve rod hole 41 at the center of valve gap 4, valve rod 5 passes valve rod hole and stretches in the chamber, is fixed on the end that valve rod is arranged in chamber at flap 2.When normal water supply, flap 2 is resisted against on the sealing seat 32 of cage type valve seat 3 along with valve rod 5, and main passage chamber I and bypass channel chamber II are isolated, and supplying water enters high-pressure heater or boiler; When water system breaks down, flap 2 descends rapidly along with valve rod 5 and closes the main passage, open the bypass channel chamber, this moment is because the effect of the throttle orifice 31 on the cage type valve seat 3, the interior space that makes water be introduced into cage type valve seat 3 enters the bypass channel chamber external space from throttle orifice 31 again, can cushion because the shock and vibration of moment water inlet.
As shown in Figure 3, another embodiment of cage type valve seat 3 is that throttle orifice 31 is square.
Referring to shown in Figure 1, the valve body 1 among the present invention is even spherical again, and promptly valve body 1 is the part spheroid, because spheroid is stressed more even than cylindrical body, therefore connecting spherical valve body can improve bearing strength, enlarges valve chamber, further plays buffer function.
Abovely purpose of the present invention, structure and advantage have been done to further specify in conjunction with preferred embodiment.Yet those skilled in the art are appreciated that within the scope of the invention, can also make various deformation to these embodiments, can not be columniform as the cage type valve seat, as long as its bottom can be connected with valve seal with top.
Claims (6)
1. high-pressure by-pass valve comprises:
One valve body (1) is formed with two chambers of connection on the described valve body (1), comprise main passage chamber (I) and bypass channel chamber (II), and described main passage chamber (I) comprises an inlet and an outlet, and described bypass channel chamber (II) has an outlet;
One flap (2) vertically moves in described valve body (1) with a valve rod (5), when being in the extreme higher position, bypass channel chamber and main passage chamber is separated, and opens the main passage; When being in extreme lower position, the main passage is closed, the bypass channel chamber is communicated with the main passage chamber, bypass channel is in open mode; It is characterized in that,
In described bypass channel chamber, be provided with a cage type valve seat (3), described cage type valve seat (3) is sheathed in the valve body (1) of described bypass channel chamber, the barrel of described cage type valve seat (3) is provided with a plurality of throttle orifices (31), the lower end of described valve seat is provided with sealing seat (32) to cooperate with described flap (2), its upper end is equipped with a valve gap (4), and described valve rod (5) extends through valve gap (4).
2. high-pressure by-pass valve as claimed in claim 1 is characterized in that, described cage type valve seat (3) is a hollow cylinder.
3. high-pressure by-pass valve as claimed in claim 1 is characterized in that, described throttle orifice (31) is circular.
4. high-pressure by-pass valve as claimed in claim 1 is characterized in that, described throttle orifice (31) is square.
5. high-pressure by-pass valve as claimed in claim 1 is characterized in that, described valve gap (4) is welded in the upper end of described cage type valve seat (3).
6. high-pressure by-pass valve as claimed in claim 1 is characterized in that, described valve body (1) is spherical for connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510030074 CN1940363A (en) | 2005-09-28 | 2005-09-28 | High-pressure by-pass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510030074 CN1940363A (en) | 2005-09-28 | 2005-09-28 | High-pressure by-pass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1940363A true CN1940363A (en) | 2007-04-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510030074 Pending CN1940363A (en) | 2005-09-28 | 2005-09-28 | High-pressure by-pass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1940363A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009012639A1 (en) * | 2007-07-26 | 2009-01-29 | Ningbo Bosheng Plumbing Co., Ltd | Diversion device |
| CN102788189A (en) * | 2012-08-16 | 2012-11-21 | 大连大高阀门股份有限公司 | Control system for hydraulically driven self-acting three-way valve bank |
| CN104344011A (en) * | 2013-08-08 | 2015-02-11 | 北京斯维克阀门厂 | Bypass three-way valve of high-pressure heater |
| CN109511260A (en) * | 2016-03-09 | 2019-03-22 | 伟尔矿物澳大利亚私人有限公司 | Valve |
| CN109654253A (en) * | 2018-12-31 | 2019-04-19 | 广州科里时机械工程有限公司 | A kind of bypass pressure relief device |
-
2005
- 2005-09-28 CN CN 200510030074 patent/CN1940363A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009012639A1 (en) * | 2007-07-26 | 2009-01-29 | Ningbo Bosheng Plumbing Co., Ltd | Diversion device |
| RU2455544C2 (en) * | 2007-07-26 | 2012-07-10 | Нинбо Бошэн Пламбинг Ко., Лтд | Water drainage facility |
| CN102788189A (en) * | 2012-08-16 | 2012-11-21 | 大连大高阀门股份有限公司 | Control system for hydraulically driven self-acting three-way valve bank |
| CN102788189B (en) * | 2012-08-16 | 2014-09-17 | 大连大高阀门股份有限公司 | Control system for hydraulically driven self-acting three-way valve bank |
| CN104344011A (en) * | 2013-08-08 | 2015-02-11 | 北京斯维克阀门厂 | Bypass three-way valve of high-pressure heater |
| CN109511260A (en) * | 2016-03-09 | 2019-03-22 | 伟尔矿物澳大利亚私人有限公司 | Valve |
| CN109654253A (en) * | 2018-12-31 | 2019-04-19 | 广州科里时机械工程有限公司 | A kind of bypass pressure relief device |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |