CN203627832U - Double-base sealed cage type regulating valve with elastic C-shaped ring - Google Patents
Double-base sealed cage type regulating valve with elastic C-shaped ring Download PDFInfo
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- CN203627832U CN203627832U CN201320738917.2U CN201320738917U CN203627832U CN 203627832 U CN203627832 U CN 203627832U CN 201320738917 U CN201320738917 U CN 201320738917U CN 203627832 U CN203627832 U CN 203627832U
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 24
- 239000010439 graphite Substances 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims abstract description 16
- 210000004907 gland Anatomy 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 238000010030 laminating Methods 0.000 claims description 11
- 239000002131 composite material Substances 0.000 abstract 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910000816 inconels 718 Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to a double-base sealed cage type regulating valve with an elastic C-shaped ring. The double-base sealed cage type regulating valve comprises a valve base and a valve body. The valve base is assembled in the middle of an inner cavity of the valve body, and a first graphite composite gasket is placed in the middle of the valve body. A sleeve is assembled on the valve base. The elastic C-shaped ring is embedded in a valve element assembly. An expansion ring and a guide ring are sequentially embedded in a groove of the valve element assembly from inside to outside. The valve element assembly is connected with a valve rod, is arranged in the sleeve together with the elastic C-shaped ring, the expansion ring and the guide ring, and is attached to a sealed face of the valve base and the sealed face of the sleeve, and therefore sealing is achieved. A second graphite composite gasket is arranged between the upper portion of the inner cavity of the valve body and an upper cover. A third graphite composite gasket is arranged between the upper portion of the sleeve and the upper cover. The upper cover, a packing cushion, a gasket packing assembly, a packing gland and a packing pressing plate are sequentially arranged on the flange face of the upper end of the valve body from bottom to top. The double-base sealed cage type regulating valve is simple and compact in structure and high in universality, and overcomes the defect that an existing cage type double-base regulating valve is low in leakage level, and stable and reliable running of the valve is achieved.
Description
Technical field
The utility model relates to a kind of cage type regulating valve, is a kind of balance type elasticity C type ring two-seater sealing cage type regulating valve that can bear high temperature and high pressure condition, and this technology belongs to modulating valve technology.
Background technique
In the fields such as chemical industry, oil refining, metallurgy, electric power, Coal Chemical Industry, cage type regulating valve is most widely used.Cage type regulating valve have degree of regulation high, operate steadily reliable, adjustment curve is diversified, actuator's required thrust is little, can bear the features such as higher operating pressure differential.
In the time of valve complete shut-down, under actuator stem force effect, spool has certain impacting force to valve seat, and before and after guaranteeing valve, fluid has certain pressure reduction, at this moment fluid is from the flow of the sealing face leakage of spool and valve base chamber, generally represent with the percentage number of rated flow coefficient, we are called leakage rate conventionally.According to leakage rate, national pneumatic control valve standard formulation corresponding leakage class.
In the time of design reaction device, according to situations such as the working condition requirement of reaction device, actual production, quality of product, cost of production, client's suggestion, valve supplier product structure features, make the Instrumentation Requirement book of valve.For cage type regulating valve, in the field such as PTA, Coal Chemical Industry, leakage class only need to meet IV level, and for oil refining, the industry such as metallurgical, and cage type regulating valve must meet V level or more than V level.Existing cage type regulating valve seal form mainly contains two kinds, and one is double-valve-seat hard sealing structure, and another kind is tetrafluoro gimbal+hard seal valve seat structure.
In above two kinds of structures, the former is in valve assembly process, and valve seat and valve core sealed cover need machining repair and underhand polish, thereby reach sealing effect.By machining repair and underhand polish, suppress test through valve and draw leakage class, the probability that once successfully reaches V level or the above leakage class of V level only has 50%, and sealing surface need to repeat machining repair and underhand polish, and lost labor and time cost, product interchangeability are low.For the latter, valve can meet V level or the above leakage class of V level through assembling, underhand polish, after suppressing, but in high temperature (>=250 ℃) work condition environment, tetrafluoro gimbal heat resistance declines obviously, aging aggravation, thereby can not meet design requirement (leakage class V level or more than V level), affect client's production and operation and quality of product.
For this reason, we develop elasticity C type ring two-seater sealing cage type regulating valve according to factors such as field working conditions, valve mechanism features.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of and can guarantee that valve operation steady in a long-term, leakage class meet V level or V level is above, adapts to the elasticity C type ring two-seater sealing cage type regulating valve of high temperature, high pressure operating mode.
The technological scheme providing according to the utility model, described elasticity C type ring two-seater sealing cage type regulating valve comprises valve body, sleeve, valve seat, mangetic core assembly, elasticity C type ring, expanding ring, guide ring, the first graphite Composition spacer, the second graphite Composition spacer, the 3rd graphite Composition spacer, upper cover, valve rod, Packing seat, graphite packing assembly, Gland and hold-down grid; Described valve seat is assemblied in body cavity middle part, with placement the first graphite Composition spacer in the middle of valve body; On valve seat, assemble sleeve; In mangetic core assembly, be embedded with elasticity C type ring, in mangetic core assembly groove, embed successively from inside to outside expanding ring, guide ring; Described mangetic core assembly is connected with valve rod, together packs in sleeve together with elasticity C type ring, expanding ring, guide ring, with sealing surface of seat and the laminating of sleeve seal face, forms sealing; The second graphite Composition spacer is installed between body cavity top and upper cover, the 3rd graphite Composition spacer is installed between upper cartridge and upper cover; Described valve body upper flanges face is installed upper cover, Packing seat, graphite packing assembly, Gland and hold-down grid successively from lower to upper;
As improvement of the present utility model, described mangetic core assembly bottom and sealing surface of seat compress after laminating, and elasticity C type ring and sleeve seal face compress tangent and laminating.
As improvement of the present utility model, described guide ring embeds in mangetic core assembly groove, puts into sleeve with mangetic core assembly, fits with sleeve lining gapless.
As improvement of the present utility model, described elasticity C type ring internal package one spring.
As improvement of the present utility model, described elasticity C type ring mounting type is opening up, and valve MEDIA FLOW is to being low in and high out.
As improvement of the present utility model, described expanding ring, guide ring are shaped as Z-type opening.
Compared with the prior art the utility model has the following advantages:
1, valve mechanism simplicity of design, degree of regulation is high, and component universality is strong, has improved user's economic benefit.
2, elasticity C type ring can compensate the machining error of each component in valve body, mangetic core assembly compresses easily realization of laminating with sealing surface of seat, sleeve seal face after being furnished with elasticity C type ring simultaneously, does not need repeatedly machining repair and underhand polish just can reach V level or the above leakage class of V level.
3, elasticity C type ring material is high temperature resistant, can be used in that valve event is frequent, medium temperature is in 800 ℃ of environment.
4, the use of guide ring and expanding ring can compensate the poor operating mode lower sleeve of High Temperature High Pressure and mangetic core assembly gap, avoids causing because sleeve and mangetic core assembly excesssive gap produce concussion that valve stem crack, adjusting function are poor, noise.
5, guide ring, the design of expanding ring Z-type opening can guarantee that valve there will not be stuck phenomenon under high temperature or worst cold case.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the II partial enlarged drawing of Fig. 1.
Fig. 3 is the I partial enlarged drawing of Fig. 1.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
As shown in Figure 1, this elasticity C type ring two-seater sealing cage type regulating valve is made up of component such as valve body 1, the first graphite Composition spacer 2, valve seat 3, sleeve 4, mangetic core assembly 5, elasticity C type ring 6, expanding ring 7, guide ring 8, the second graphite Composition spacer 9, upper cover 10, valve rod 11, Packing seat 12, graphite packing group 13, Gland 14, hold-down grid 15 and the 3rd graphite Composition spacers 16.
Described valve seat 3 is assemblied in valve body 1 inner chamber middle part, with placement the first graphite Composition spacer 2 in the middle of valve body 1; On valve seat 3, assemble sleeve 4; In mangetic core assembly 5, be embedded with elasticity C type ring 6, when valve MEDIA FLOW is to when the low in and high out, described elasticity C type ring 6 mounting types are opening up.Described elasticity C type ring 6 internal package one springs.After the 3 sealing surface compact laminatings of mangetic core assembly 5 bottoms and valve seat, elasticity C type ring and sleeve 4 sealing surface compact are tangent and fit.In mangetic core assembly 5 grooves, embed successively from inside to outside expanding ring 7, guide ring 8; Mangetic core assembly 5 is connected with valve rod 11, together put into sleeve 4 together with elasticity C type ring 6, expanding ring 7, guide ring 8, with valve seat 3 sealing surfaces, sleeve 4 sealing surface laminatings, form sealing, guide ring 8 fits tightly with sleeve 4 inwalls, and described expanding ring 7, guide ring 8 are shaped as Z-type opening.Described guide ring 8 embeds in mangetic core assembly 5 grooves, puts into sleeve 4 with mangetic core assembly 5, with sleeve 4 inwall gapless laminatings.Valve body 1 inner chamber top is propped up between mouthful place and upper cover 10 the second graphite Composition spacer 9 is installed, sleeve 4 tops are propped up between mouthful place and upper cover 10 the 3rd graphite Composition spacer 16 are installed, and described valve body 1 upper flanges face is installed upper cover 10, Packing seat 12, graphite packing assembly 13, Gland 14, hold-down grid 15 and standard piece successively from lower to upper.Described mangetic core assembly 5 and valve rod 11 are by being threaded and in screw head spot welding.
Working principle of the present utility model is as follows:
The utility model adopts elasticity C type ring two-seater sealing cage type regulating valve structure, and valve body 1 adopts high temperature Cr-Mo steel foundry goods form, can bear high temperature, high pressure operating mode.Trim adopts Austenitic Stainless Steel material.Elasticity C type ring 6, expanding ring 7, guide ring 8 adopt Inconel718, and this material has certain elasticity.
High temperature, high-pressure process medium enter in valve body 1 inner chamber (low in and high out) by pipeline before valve, by mangetic core assembly 5 and the relative displacement of valve seat 3, rate-of flow are regulated to control, enter next technological process thereby reach the traffic requirement that meets technique.
When valve receives after control signal, mangetic core assembly 5 moves up and down, regulate the relative position between valve seat 3, while needing throttle down, mangetic core assembly 5 bottoms and valve seat 3 sealing surfaces fit tightly, simultaneously mangetic core assembly 5 tops promote elasticity C type ring 6 clamp sleeve 4 sealing surfaces, make itself and sleeve 4 sealing surfaces tangent to play seal action.Because elasticity C type ring 6 Inconel718 material used has elasticity, its ring inner chamber wraps up small spring simultaneously, so when elasticity C type ring 6 produces resiliently deformable through mangetic core assembly 5 after sleeve 4 sealing surface direction extruding, final formation sleeve 4 sealing surfaces and elasticity C type ring 6 cylindricals are tangent, guarantee that sealing is reliable, stable.In mangetic core assembly 5 grooves, guide ring 8 plays stable and compensating action in mangetic core assembly 5 movement processes, guarantees the elasticity C type ring 6 direction consistent and uniform that is stressed, and sealing surface laminating is firm.Meet V level or the above leakage class of V level through suppressing test.
Claims (6)
1. an elasticity C type ring two-seater sealing cage type regulating valve, comprises valve body (1), valve seat (3), sleeve (4), mangetic core assembly (5), elasticity C type ring (6), expanding ring (7), guide ring (8), upper cover (10), valve rod (11), Packing seat (12), graphite packing assembly (13), Gland (14) and hold-down grid (15); It is characterized in that: described valve seat (3) is assemblied in valve body (1) inner chamber middle part, with placement the first graphite Composition spacer (2) in the middle of valve body (1); At valve seat (3) upper assembling sleeve (4); In mangetic core assembly (5), be embedded with elasticity C type ring (6), in mangetic core assembly (5) groove, embed successively from inside to outside expanding ring (7), guide ring (8); Described mangetic core assembly (5) is connected with valve rod (11), together packs in sleeve (4) together with elasticity C type ring (6), expanding ring (7), guide ring (8), with valve seat (3) sealing surface and the laminating of sleeve (4) sealing surface, forms sealing; The second graphite Composition spacer (9) is installed between valve body (1) inner chamber top and upper cover (10), the 3rd graphite Composition spacer (16) is installed between sleeve (4) top and upper cover (10); Described valve body (1) upper flanges face is installed upper cover (10), Packing seat (12), graphite packing assembly (13), Gland (14) and hold-down grid (15) successively from lower to upper.
2. elasticity C type ring two-seater sealing cage type regulating valve as claimed in claim 1, is characterized in that: after described mangetic core assembly (5) bottom and the laminating of valve seat (3) sealing surface compact, elasticity C type ring (6) is tangent and laminating with sleeve (4) sealing surface compact.
3. elasticity C type ring two-seater sealing cage type regulating valve as claimed in claim 1, is characterized in that: described guide ring (8) embeds in mangetic core assembly (5) groove, puts into sleeve (4) with mangetic core assembly (5), fits with sleeve (4) inwall gapless.
4. elasticity C type ring two-seater sealing cage type regulating valve as claimed in claim 1, is characterized in that: described elasticity C type ring (6) internal package one spring.
5. elasticity C type ring two-seater sealing cage type regulating valve as claimed in claim 1, is characterized in that: described elasticity C type ring (6) mounting type is opening up, and valve MEDIA FLOW is to being low in and high out.
6. elasticity C type ring two-seater sealing cage type regulating valve as claimed in claim 1, is characterized in that: described expanding ring (7), guide ring (8) are shaped as Z-type opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738917.2U CN203627832U (en) | 2013-11-20 | 2013-11-20 | Double-base sealed cage type regulating valve with elastic C-shaped ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320738917.2U CN203627832U (en) | 2013-11-20 | 2013-11-20 | Double-base sealed cage type regulating valve with elastic C-shaped ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627832U true CN203627832U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320738917.2U Expired - Lifetime CN203627832U (en) | 2013-11-20 | 2013-11-20 | Double-base sealed cage type regulating valve with elastic C-shaped ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591315A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Elastic C-shaped ring double-seat sealed cage type adjusting valve |
| CN105370346A (en) * | 2015-12-17 | 2016-03-02 | 无锡威孚力达催化净化器有限责任公司 | Particulate trap assembling and disassembling structure |
-
2013
- 2013-11-20 CN CN201320738917.2U patent/CN203627832U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591315A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | Elastic C-shaped ring double-seat sealed cage type adjusting valve |
| CN103591315B (en) * | 2013-11-20 | 2016-01-20 | 无锡智能自控工程股份有限公司 | Elasticity C type ring two-seater sealing cage type regulating valve |
| CN105370346A (en) * | 2015-12-17 | 2016-03-02 | 无锡威孚力达催化净化器有限责任公司 | Particulate trap assembling and disassembling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
|
| CX01 | Expiry of patent term |