CN203703277U - Feed water regulating valve - Google Patents
Feed water regulating valve Download PDFInfo
- Publication number
- CN203703277U CN203703277U CN201320832672.XU CN201320832672U CN203703277U CN 203703277 U CN203703277 U CN 203703277U CN 201320832672 U CN201320832672 U CN 201320832672U CN 203703277 U CN203703277 U CN 203703277U
- Authority
- CN
- China
- Prior art keywords
- valve
- sleeve
- valve body
- spool
- feed water
- 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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Abstract
The utility model relates to a feed water regulating valve. The feed water regulating valve is innovatively characterized in that a filter screen cylinder, a valve seat, a core pocket and a sleeve are sequentially arranged in a chamber of a valve body from bottom to top, the filter screen cylinder is a cylinder body with a plurality of through holes which are uniformly distributed in one surface, and the core pocket is formed by a plurality of labyrinth discs which are coaxially overlaid and welded; the sleeve is of a cylinder structure, a plurality of flowing holes which are annularly distributed are formed in the lower part of the cylinder structure, and each flowing hole is formed by a rectangle at the upper part and an inverted trapezoid at the lower part; an annular bulge is arranged at the upper end of the cylinder structure; expanded graphite stainless steel wound gaskets are respectively arranged between the annular bulge and a bonnet and between the annular bulge and the valve body and a valve core is provided with a pressure relieving hole and a self-sealing ring. The feed water regulating valve has the advantages that since the filter screen cylinder is arranged on the liquid inlet side of the valve body, the through holes which are densely distributed in the filter screen cylinder are used for noise reduction and pressure reduction and a plurality of labyrinth discs are used for gradually reducing the pressure, the sealing specific pressure and the working torque can be greatly reduced; the feed water regulating valve has the characteristics of cavitation resistance, low vibration, variable resistance, low noise and long service life.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of feed-regulating valve.
Background technique
Electric power is the important energy source of the national economic development, and the electric motor power of domestic existing power station mainly concentrates within the scope of 50-600MW.Feed-regulating valve is to be matched in the boiler feed water of thermal power generation unit automatically to control and the terminal equipment regulating, and its performance directly has influence on the normal use of unit.
Current feed-regulating valve mainly comprises that valve body, valve seat, valve rod, valve gap, spool and mazy type shroud, and spool moves in the vertical direction to coordinate with valve seat to realize and opens and closes under the driving of valve rod, or shrouds and coordinate the adjusting that realizes flow with mazy type.Its structural disadvantages is: noise is large, and at cavitation effect lower valve base sealing surface seriously corroded, need to carry out frequently periodical repair and can normally work to guarantee it.
Summary of the invention
The technical problems to be solved in the utility model be to provide a kind of simple in structure, noise is low and feed-regulating valve that can anti-cavitation.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of feed-regulating valve, its innovative point is: mainly comprise valve body, screen tube, valve seat, core bag, sleeve, spool, valve gap and valve rod, in valve body lumen, set gradually screen tube, valve seat, core bag, sleeve from bottom to top, described screen tube, valve seat, core bag and sleeve is connected and fixed to realize by bolt assembly and valve body upper-end surface by valve gap and compresses; Described screen tube is the cylindrical shell that a surface uniform is distributed with some through holes, and core bag is welded by some mazy type disc Coaxial Superimposeds; Described sleeve is a tube structure, and the bottom of cylindrical shell arranges several openings that distribute ringwise, and each opening is made up of top rectangle and bottom inverted trapezoidal; The upper end of cylindrical shell arranges the annular protrusion radially extending; The annular protrusion of described sleeve is connected and fixed clamping by valve gap by bolt assembly and valve body upper-end surface, and between the upper surface of annular protrusion and valve gap lower end surface and between the lower surface of annular protrusion and valve body upper-end surface, expanded graphite stainless steel wound gasket is being set respectively; In valve body lumen, be also provided with and coordinate the spool of realizing keying or Flow-rate adjustment with sleeve, core bag or valve seat, spool is the hood-like cylindrical body that a bottom is emptied, the outer hardfacing alloy layer of hood-like cylindrical body, on this hood-like cylindrical body, be provided with the relief hole that connects spool upper and lower cavity, there is a step surface at cylindrical outer surface of cupular part, on this step surface, be provided with the V-shaped seal ring of being close to sleeve lining, the built-in O RunddichtringO of described V-shaped seal ring; Valve rod lower end and spool are connected and fixed, and expanded graphite packing layer is set between valve rod and valve gap, and this expanded graphite packing layer is fixed and clamped between valve rod and valve gap by stuffing box gland and Gland.
The utility model has the advantage of:
Liquid feeding side at valve body arranges screen tube, utilize the densely covered through hole of screen tube to carry out noise reduction, step-down, and adopt multiple disk mazy type discs, multistage 90o quarter bend baffling road carries out progressively step-down, high-pressure feed water is limited in below 30m/s by each runner flow velocity, can greatly reduce seal pressure and work moment, have anti-cavitation, low vibrations, can variable resistance and the characteristic such as low noise, all life-spans be long, can adapt to frequent starting and outdoor installing and using under various operating modes.And balance relief hole is set on spool, balance valve core pressure at both sides, improves and opens and closes reliability.
Accompanying drawing explanation
Fig. 1 is the utility model feed-regulating valve structural representation.
Fig. 2 is the utility model core bag plan view.
Fig. 3 is the utility model core bag disc plan view.
Fig. 4 is the utility model middle sleeve structural representation.
Fig. 5 is along B-B line sectional view in Fig. 4.
Fig. 6 is partial enlarged drawing A in Fig. 1.
Embodiment
Embodiment
Refer to Fig. 1, the utility model has disclosed a kind of feed-regulating valve structure, comprises valve body 1, screen tube 2, valve seat 3, core bag 4, sleeve 5, valve gap 6, bolt assembly 7, expanded graphite stainless steel wound gasket 8, expanded graphite stainless steel wound gasket 9, spool 10, relief hole 11, V-shaped seal ring 12, O RunddichtringO 13, valve rod 14, expanded graphite packing layer 15, stuffing box gland 16 and Gland 17.
In valve body 1 lumen, set gradually screen tube 2, valve seat 3, core bag 4, sleeve 5 from bottom to top, screen tube 2, valve seat 3, core bag 4 and sleeve 5 are connected and fixed to realize by bolt assembly 7 and valve body 1 upper-end surface by valve gap 6 and compress.
Screen tube 2 is the cylindrical shell that a surface uniform is distributed with some through holes, and as shown in Figure 2,3, core bag 4 is welded by some mazy type disc 41 Coaxial Superimposeds.
As shown in Figure 4,5, sleeve 5 is a tube structure, and the bottom of cylindrical shell arranges several openings that distribute ringwise, and each opening is made up of top rectangle and bottom inverted trapezoidal; The upper end of cylindrical shell arranges the annular protrusion radially extending; The annular protrusion of sleeve 5 is connected and fixed clamping by valve gap 6 by bolt assembly 7 and valve body 1 upper-end surface, and between the upper surface of annular protrusion and valve gap 6 lower end surfaces and between the lower surface of annular protrusion and valve body 1 upper-end surface, expanded graphite stainless steel wound gasket 8,9 is being set respectively.
In valve body 1 lumen, be also provided with and coordinate the spool 10 of realizing keying or Flow-rate adjustment with sleeve 5, core bag 4 or valve seat 3, spool 10 is the hood-like cylindrical body that a bottom is emptied, the outer hardfacing alloy layer of hood-like cylindrical body, on this hood-like cylindrical body, be provided with the relief hole 11 that connects spool 10 upper and lower cavitys, there is a step surface at cylindrical outer surface of cupular part, as shown in Figure 6, on this step surface, by check ring 18, the V-shaped seal ring 12 of being close to sleeve lining is installed, the built-in O RunddichtringO 13 of V-shaped seal ring 12.
Spool 10 is connected and fixed with valve rod 14 lower ends; Between valve rod 14 and valve gap 6, expanded graphite packing layer 15 is set, this expanded graphite packing layer 15 is fixed and clamped between valve rod 14 and valve gap 6 by stuffing box gland 16 and Gland 17.
Claims (1)
1. a feed-regulating valve, it is characterized in that: mainly comprise valve body, screen tube, valve seat, core bag, sleeve, spool, valve gap and valve rod, in valve body lumen, set gradually screen tube, valve seat, core bag, sleeve from bottom to top, described screen tube, valve seat, core bag and sleeve is connected and fixed to realize by bolt assembly and valve body upper-end surface by valve gap and compresses;
Described screen tube is the cylindrical shell that a surface uniform is distributed with some through holes, and core bag is welded by some mazy type disc Coaxial Superimposeds;
Described sleeve is a tube structure, and the bottom of cylindrical shell arranges several openings that distribute ringwise, and each opening is made up of top rectangle and bottom inverted trapezoidal; The upper end of cylindrical shell arranges the annular protrusion radially extending; The annular protrusion of described sleeve is connected and fixed clamping by valve gap by bolt assembly and valve body upper-end surface, and between the upper surface of annular protrusion and valve gap lower end surface and between the lower surface of annular protrusion and valve body upper-end surface, expanded graphite stainless steel wound gasket is being set respectively;
In valve body lumen, be also provided with and coordinate the spool of realizing keying or Flow-rate adjustment with sleeve, core bag or valve seat, spool is the hood-like cylindrical body that a bottom is emptied, the outer hardfacing alloy layer of hood-like cylindrical body, on this hood-like cylindrical body, be provided with the relief hole that connects spool upper and lower cavity, there is a step surface at cylindrical outer surface of cupular part, on this step surface, be provided with the V-shaped seal ring of being close to sleeve lining, the built-in O RunddichtringO of described V-shaped seal ring;
Valve rod lower end and spool are connected and fixed, and expanded graphite packing layer is set between valve rod and valve gap, and this expanded graphite packing layer is fixed and clamped between valve rod and valve gap by stuffing box gland and Gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320832672.XU CN203703277U (en) | 2013-12-18 | 2013-12-18 | Feed water regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320832672.XU CN203703277U (en) | 2013-12-18 | 2013-12-18 | Feed water regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703277U true CN203703277U (en) | 2014-07-09 |
Family
ID=51053722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320832672.XU Expired - Fee Related CN203703277U (en) | 2013-12-18 | 2013-12-18 | Feed water regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930209A (en) * | 2015-06-23 | 2015-09-23 | 泰州市扬联船用阀门有限公司 | Regulating valve |
-
2013
- 2013-12-18 CN CN201320832672.XU patent/CN203703277U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930209A (en) * | 2015-06-23 | 2015-09-23 | 泰州市扬联船用阀门有限公司 | Regulating 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: 20140709 Termination date: 20201218 |