CN2835739Y - Inlet valve for high pressure heater protector - Google Patents
Inlet valve for high pressure heater protector Download PDFInfo
- Publication number
- CN2835739Y CN2835739Y CN 200520076179 CN200520076179U CN2835739Y CN 2835739 Y CN2835739 Y CN 2835739Y CN 200520076179 CN200520076179 CN 200520076179 CN 200520076179 U CN200520076179 U CN 200520076179U CN 2835739 Y CN2835739 Y CN 2835739Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- upper valve
- valve body
- pressure heater
- 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 an inlet valve for a high pressure heater protector, which comprises a valve body, valve seats, a valve clack, a valve rod, a valve cover and a piston control device, wherein the valve body is a three way type such as one inlet and two outlets; the utility model is provided with an upper valve seat and a lower valve seat; an outlet of the upper valve seat is communicated with a by-pass passage; an outlet of the lower valve seat is communicated with a passage of a high pressure heater; the valve clack is positioned between the upper valve seat and the lower valve seat; primarily, the upper valve seat is connected with the valve body through convex shoulders which are mutually matched. When the valve clack is sealed and matched with the upper valve seat, inlet medium pressure pushes the upper valve seat upward so that the upper valve seat tightly presses a sealing ring. The utility model achieves self tight sealing, leads the upper valve base to be reliably sealed with the valve body, has good tightness and is suitable for inlet valves of the high pressure heater protector of boiler feed water systems.
Description
Technical field
The utility model relates to a kind of valve, particularly about a kind of safety protection valve of feed water system of boiler high-pressure heater.
Background technique
The emergency bypass valve all must be installed in high-pressure heater ingress at steam generator system, this valve has an inlet passage and two outlet passages, its inlet passage is communicated with the import medium, and one of them outlet passage is communicated with high-pressure heater, and another outlet passage is a bypass channel.When high-pressure heater was forbidden into medium, by-pass valve was opened bypass channel, closes the passage that is connected with high-pressure heater, and import medium and high-pressure heater are isolated.Valve mechanism comprises valve body, valve seat, flap, valve rod, valve gap and piston controller, valve body is a Three way type, promptly by an import and two outlets, valve seat has two up and down, be fixedly installed in the valve body by screw thread respectively, wherein the outlet of upper valve base is communicated with bypass channel, the channel connection of lower valve base outlet and high-pressure heater.Flap is between two valve seats up and down, and the lower end surface of its upper-end surface and upper valve base is sealed and matched, and the upper-end surface of lower end surface and lower valve base is sealed and matched.Be provided with seal ring between upper valve base and the valve body, the sealing circle is fitted between valve body and the upper valve base by sleeve by valve gap, and its shortcoming is that seal ring is at high temperature worked and leaked easily after a period of time, makes that sealability descends between upper valve base and the valve body.
Summary of the invention
The purpose of this utility model is to have the shortcoming that leakage takes place between upper valve base and the valve body easily at prior art, provides between a kind of upper valve base and the valve body to have self-fastening sealing structure, and sealability is used for the inlet valve of protection arrangement for high-pressure heater reliably.
The technological scheme that realizes the utility model purpose comprises valve body, valve seat, flap, valve rod, valve gap and piston controller, valve body is a Three way type, promptly by an import and two outlets, valve seat has two up and down, wherein the outlet of upper valve base is communicated with bypass channel, the channel connection of lower valve base outlet and high-pressure heater, flap is up and down between two valve seats, the lower end surface of its upper-end surface and upper valve base is sealed and matched, the upper-end surface of lower end surface and lower valve base is sealed and matched, mainly be that upper valve base periphery and valve interior wall are shaped on convex shoulder respectively, the installation that cooperatively interacts of the last plane of the lower plane of its upper valve base convex shoulder and valve body convex shoulder, seal ring is installed in the last plane and valve interior wall and upper valve base outer wall looping groove of upper valve base convex shoulder, and the seal ring upper-end surface compresses installation by sleeve.
The utility model has the advantages that the convex shoulder connection that employing cooperatively interacts between upper valve base and the valve body, when flap and upper valve base were sealed and matched, the import pressure medium upwards pushed away upper valve base, compress seal ring, reach self-tightening sealing, make upper valve base and valve body reliable sealing, good seal performance.
Description of drawings
Fig. 1 is a structure sectional view of the present utility model.
Embodiment
The inlet valve that is used for protection arrangement for high-pressure heater as shown in Figure 1; comprise valve body 1, lower valve base 2, flap 3, valve rod 7, valve gap 10 and piston controller; valve body 1 is a Three way type; promptly by an import and two outlets; valve seat has two up and down; wherein the outlet of upper valve base 4 is communicated with bypass channel; the channel connection of lower valve base 2 outlets and high-pressure heater; flap 3 is up and down between two valve seats; the lower end surface of its upper-end surface and upper valve base 4 is sealed and matched, and the upper-end surface of lower end surface and lower valve base 2 is sealed and matched.Fixedly mount by screw thread between lower valve base 2 and the valve body 1, upper valve base 4 peripheries and valve body 1 inwall are shaped on convex shoulder respectively, the installation that cooperatively interacts of the last plane of the lower plane of its upper valve base convex shoulder and valve body convex shoulder, it is mobile that upper valve base 4 can be made progress valve body 1 in when being subjected to upwards thrust.Seal ring 5 is installed in the last plane and valve body 1 inwall and upper valve base 4 outer wall looping grooves of upper valve base convex shoulder, and seal ring 5 upper-end surfaces compress installation by sleeve 6.Upper valve base 4 upper-end surfaces and seal ring 5 lower end surface Bevels cooperatively interact.When flap 3 sealed with upper valve base 4, upper valve base 4 made seal ring 5 compress sealing between sleeve 6, valve body 1, upper valve base 4 under high-pressure medium thrust.Sleeve 6 is press-fited by valve gap 10, is provided with packing ring 8 between the two.Adopt between valve gap 10 and the valve rod 7 by Gland 11 and compress filler 9 sealings.Piston controller is made up of piston cylinder 13, piston 14, piston rod 12 and piston power source interface 15, and piston rod 12 is mutually permanently connected with valve rod 7.
Claims (1)
1; a kind of inlet valve that is used for protection arrangement for high-pressure heater; comprise valve body (1); valve seat; flap (3); valve rod (7); valve gap (10) and piston controller; valve body (1) is a Three way type; promptly by an import and two outlets; valve seat has two up and down; wherein the outlet of upper valve base (4) is communicated with bypass channel; the channel connection of lower valve base (2) outlet and high-pressure heater; flap (3) is up and down between two valve seats; the lower end surface of its upper-end surface and upper valve base (4) is sealed and matched; the upper-end surface of lower end surface and lower valve base (2) is sealed and matched; it is characterized in that upper valve base (4) periphery and valve body (1) inwall are shaped on convex shoulder respectively; the installation that cooperatively interacts of the last plane of the lower plane of its upper valve base convex shoulder and valve body convex shoulder; seal ring (5) is installed in the last plane and valve body (1) inwall and upper valve base (4) outer wall looping groove of upper valve base convex shoulder, and seal ring (5) upper-end surface compresses installation by sleeve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520076179 CN2835739Y (en) | 2005-09-28 | 2005-09-28 | Inlet valve for high pressure heater protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520076179 CN2835739Y (en) | 2005-09-28 | 2005-09-28 | Inlet valve for high pressure heater protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2835739Y true CN2835739Y (en) | 2006-11-08 |
Family
ID=37300393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520076179 Expired - Fee Related CN2835739Y (en) | 2005-09-28 | 2005-09-28 | Inlet valve for high pressure heater protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2835739Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103672022A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Bidirectional blocking valve seat |
| CN104344011A (en) * | 2013-08-08 | 2015-02-11 | 北京斯维克阀门厂 | Bypass three-way valve of high-pressure heater |
-
2005
- 2005-09-28 CN CN 200520076179 patent/CN2835739Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103672022A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Bidirectional blocking valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Ying Jianzhong Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |