CN202733095U - Balance type high-pressure-difference regulating valve - Google Patents
Balance type high-pressure-difference regulating valve Download PDFInfo
- Publication number
- CN202733095U CN202733095U CN 201220361795 CN201220361795U CN202733095U CN 202733095 U CN202733095 U CN 202733095U CN 201220361795 CN201220361795 CN 201220361795 CN 201220361795 U CN201220361795 U CN 201220361795U CN 202733095 U CN202733095 U CN 202733095U
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- valve
- cover
- pressure
- type high
- balance type
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Abstract
The utility model relates to a balance type high-pressure-difference regulating valve. The balance type high-pressure-difference regulating valve comprises a valve body, a valve seat and a valve cover, wherein the valve seat is arranged in the inner stop mouth of the valve body; a valve cavity is formed in the middle of the valve body and the valve cover; a valve rod capable of moving up and down along the valve cavity is arranged in the valve cavity; the upper end of the valve rod is fixedly connected with an actuating mechanism of an electric device; the lower end of the valve rod is in threaded connection with a valve clack capable of moving up and down along the valve cavity arranged in the valve cavity; a lower cage cover is arranged on the valve seat; the lower cage cover is connected with an upper cage cover through a sealing ring; and the upper cage cover is contacted with the valve cover. The utility model has the benefits that the balance type high-pressure-difference regulating valve adopts a composite balanced structure, so that the upper end and the lower end of the valve clack are under balanced stress, the problems of sealing leakage, regulating performance sluggish and the like caused by unbalanced stress of the valve clack are solved, the sealing property of the valve is improved, the operating force of the actuating mechanism is reduced and safe operation of an automatic control system is guaranteed to the maximum degree.
Description
Technical field
The utility model relates to a kind of valve, especially a kind of balanced high pressure differential regulating valve.
Background technique
Modulating valve is the regulating controller to the pipeline medium flow, it is one of vitals of automatic production, the sealability of modulating valve has a significant impact the running state tool of automation control system, along with to the improving constantly of automation control system security requirement, the requirement of the modulating valve of one of performance element of automation control system is also improved constantly.Traditional modulating valve mainly by valve body, valve seat, shroud, valve rod and valve gap form, its sealing problem is a great problem of puzzlement automation control system always, wherein valve core sealed cover do not press tightly all the time valve body sealing surface and velocity of medium too fast trim and sealing surface are produced to wash away all can cause leaking in the modulating valve sealing, thereby affect the safe operation of fired power generating unit, control system is polluted and wastes.Uneven formula structure is adopted in modulating valve inside in addition, MEDIA FLOW is to many employings forward, cause in valve open or the closing process, the very large active force by the pressure medium generation has been born in flap upper end or lower end, if valve adopts the mounting type of low in and high out, the stressed promotion valve rod in flap lower end moves upward during valve closing, causes that easily sealing surface of seat is not closed completely and then produces leakage, cause sealing surface to damage and trim destruction, affected the working life of valve and the normal operation of unit; If adopt the mounting type of high in and low out, the stressed promotion flap in flap upper end moves downward during valve open, cause valve to be difficult for opening or opening delay, affected its degree of regulation, especially to pressure height and the large valve of bore, the steering force that its actuating device requires is larger, and the actuating device of large steering force not only price is high, adjusting function is also relative relatively poor with precision.
The model utility content
The purpose of this utility model is: for the problem of above-mentioned prior art existence, a kind of improvement of high-differential-pressure regulating valve structure is proposed, both alleviated medium washing away and cavitation valve sealing face and internals, effectively reduce again the steering force of valve, improved working life and the degree of regulation of valve.
In order to reach above purpose, balanced high pressure differential regulating valve of the present utility model, comprise valve body, be installed in valve seat and the valve gap that is fixedly connected with valve body in the valve body inner stopper, at described valve body, the centre of valve gap is provided with valve pocket, be provided with the valve rod that can move up and down along valve pocket in the described valve pocket, the upper end of described valve rod is fixedly connected with the actuator of Electric actuator, the lower end be arranged in the valve pocket and can be threaded along the flap that valve pocket moves up and down, its improvements are, described valve seat is provided with down and shrouds, shroud under described by seal ring with on shroud and be connected, shroud with valve gap touching on described.
It is that described flap is provided with equalizing orifice that the utility model further improves.
The utility model further improves, and the contact position that shrouds on described with valve gap or valve body is provided with pad.
The utility model has the advantage of: balanced high pressure differential regulating valve of the present utility model adopts the combined balance structure, make the stress balance of flap upper and lower end, when effectively having solved the modulating valve operation because flap is subjected to the problems such as seal leakage that force unbalance causes, adjusting function sluggishness, improved the sealability of valve, reduce the steering force of actuator, guaranteed to greatest extent the safe operation of automation control system.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model embodiment one structural representation.
Embodiment
Embodiment one
The balanced high pressure differential regulating valve of present embodiment, its structure as shown in Figure 1, comprise valve body 1 and the valve seat 3 that is installed in valve body 1 inner stopper, be provided with gasket seal 2 between valve body 1 and the valve seat 3, valve body 1 is fixedly connected with valve gap 17 by bolt 9, nut 10, the upper end of valve gap 17 internal valve cavity is stuffing box, from bottom to top be provided with successively the filler cover 11, filler 12 and the filler pressing sleeve 13 that are enclosed within valve rod 15 upper ends in the stuffing box, the upper end of valve gap 17 is fixedly connected with hold-down grid 14 by bolt, and pretension bolt is so that hold-down grid 14 compresses condiment 12 to guarantee filler 12 sealings; Centre at valve body 1, valve gap 17 is provided with valve pocket, be provided with the valve rod 15 that can move up and down along valve pocket in the valve pocket, the upper end of valve rod 15 is fixedly connected with the actuator of Electric actuator 16, the lower end be arranged in the valve pocket and can be threaded along the flap 5 that valve pocket moves up and down, wherein valve rod 15 adopts the tapering location with flap 5, and locating stud is fixed; The upper end of valve seat 3 is provided with down shrouds 4, under shroud 4 by seal ring 6 with on shroud 7 and be connected, on shroud 7 and touch with valve gap 17, valve gap 17 compresses and shrouds 7, on shroud 7 and be provided with pad 8 with the contact position of valve gap 17 or valve body 1, flap 5 is provided with the equalizing orifice that can run through flap 5, and the upper and lower end of flap 5 is communicated with, thereby makes the pressure balance at flap two ends about in the of 5.
During work, under the driving of actuator, valve rod 15 drives flap 5 and lifts off a seat 3, and the window that shrouds is opened, owing to adopt the upper and lower structure of shrouding, has changed the flow area of valve, and by the change of flow area flow has been regulated.Opening or closing in the process of valve, if valve adopts the mounting type of low in and high out, the upper and lower end of flap 5 bears the active force that pressure medium produces simultaneously, because the upper and lower end area of flap 5 equates, equate that can not produce other active force, seal ring 6 opens the cylindrical of being close to flap 5 under the pressure medium effect so that its upper and lower end is stressed, form sealing layer, avoid valve leak; If valve adopts the mounting type of high in and low out, seal ring 6 opens under the pressure medium effect to be close to flap 5 cylindricals and to shroud endoporus, forms sealing layer, avoids medium by the clearance leakage of shrouding with flap 5.
In addition to the implementation, the utility model also can have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, drop on the protection domain of the utility model requirement.
Claims (3)
1. balanced high pressure differential regulating valve, comprise valve body, be installed in valve seat and the valve gap that is fixedly connected with valve body in the valve body inner stopper, centre at described valve body, valve gap is provided with valve pocket, be provided with the valve rod that can move up and down along valve pocket in the described valve pocket, the upper end of described valve rod is fixedly connected with the actuator of Electric actuator, the lower end be arranged in the valve pocket and can be threaded along the flap that valve pocket moves up and down, it is characterized in that: described valve seat is provided with down and shrouds, shroud under described by seal ring with on shroud and be connected, shroud with valve gap touching on described.
2. balanced high pressure differential regulating valve according to claim 1, it is characterized in that: described flap is provided with equalizing orifice.
3. balanced high pressure differential regulating valve according to claim 1 is characterized in that: the contact position that shrouds on described with valve gap or valve body is provided with pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361795 CN202733095U (en) | 2012-07-24 | 2012-07-24 | Balance type high-pressure-difference regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220361795 CN202733095U (en) | 2012-07-24 | 2012-07-24 | Balance type high-pressure-difference regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733095U true CN202733095U (en) | 2013-02-13 |
Family
ID=47658796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220361795 Expired - Lifetime CN202733095U (en) | 2012-07-24 | 2012-07-24 | Balance type high-pressure-difference regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821949A (en) * | 2014-02-19 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | Cascading valve clack type adjusting valve |
| CN112503201A (en) * | 2020-11-27 | 2021-03-16 | 江苏盐阜电站阀门辅机制造有限公司 | Supercritical high-pressure bivalve pressure-relief sewage-discharge type pneumatic flow regulating valve |
-
2012
- 2012-07-24 CN CN 201220361795 patent/CN202733095U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821949A (en) * | 2014-02-19 | 2014-05-28 | 哈电集团哈尔滨电站阀门有限公司 | Cascading valve clack type adjusting valve |
| CN112503201A (en) * | 2020-11-27 | 2021-03-16 | 江苏盐阜电站阀门辅机制造有限公司 | Supercritical high-pressure bivalve pressure-relief sewage-discharge type pneumatic flow regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU YIFA GROUP CO., LTD. Free format text: FORMER NAME: ZHENJIANG CASTING VALVE PLANT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Yangzhong City, Jiangsu province Zhenjiang City West 212221 town Gangbei Road No. 34 Patentee after: JIANGSU EVALVE GROUP Co.,Ltd. Address before: Yangzhong City, Jiangsu province Zhenjiang City West 212221 town Gangbei Road No. 34 Patentee before: ZHENJIANG CASTING VALVE FACTORY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Yangzhong City, Jiangsu province Zhenjiang City West 212221 town Gangbei Road No. 34 Patentee after: JIANGSU EVALVE CO.,LTD. Address before: Yangzhong City, Jiangsu province Zhenjiang City West 212221 town Gangbei Road No. 34 Patentee before: JIANGSU EVALVE GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |