CN204739224U - Feedwater three -way valve seal structure - Google Patents
Feedwater three -way valve seal structure Download PDFInfo
- Publication number
- CN204739224U CN204739224U CN201520306153.9U CN201520306153U CN204739224U CN 204739224 U CN204739224 U CN 204739224U CN 201520306153 U CN201520306153 U CN 201520306153U CN 204739224 U CN204739224 U CN 204739224U
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- Prior art keywords
- groove
- seal
- feedwater
- energy storage
- way valve
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Abstract
The utility model discloses a feedwater three -way valve seal structure, including being used for cooperation sealed valve body and disk seat, it has upper and lower two rings connected in star to open on the disk seat lateral wall, O shape sealing washer has been placed in the upper groove, place flexible energy storage circle in the low groove, elasticity energy storage circle is including a ring carrier, it has the seal groove to open along the circumference on the support, open side down for the seal groove, and its lateral wall has elasticity, install the sealing ring in the seal groove. This kind of sealed form has the sealing force and does not receive pressure medium influence of fluctuations, simple structure, not fragile advantage, can improve reliability sealed between disk seat and valve body by a wide margin, guarantees valve and the long -term normal operating of high pressure feed water heater.
Description
Technical field
The utility model relates to a kind of sealing configuration of feed water three-way valve body and valve base chamber.
Background technique
Sealing configuration between existing high-pressure feed water three-way valve upper valve base and valve body, many employing screw in compression pressing plates and selfsealings circle, with the sealing ensured by compressive strain between three-way valve upper valve base and valve body of selfsealings circle, play No leakage effect.Pressing plate and liner plate are fitted, and transmitting forces is to the pendant collet of valve body lumen, and pendant collet is propped up by baffle ring and prevented from coming off.Selfsealings circle is after screw active force pretension, promote valve seat by medium active force upwards to seal between compressing self-sealing circle and valve body, but when pressure medium fluctuates, selfsealings circle also inconsistent by decrement, due at valve body lumen position, again cannot adjust the decrement of seal ring by pre-loading screw, seal ring is in degree of tightness inconsistent state for a long time, after long-time running, selfsealings circle is extruded from gap, under the washing away of medium, cause seal ring to lose efficacy, the cold water of high pressure entry end flows to boiler from upper valve base, cause the efficiency of heating surface that height adds impaired, draw and ring security of operation.
Model utility content
For the technical problem of above-mentioned existence, the utility model provides a kind of feedwater three-way valve sealing configuration, and sealing force is not stressed influence of fluctuations.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of feedwater three-way valve sealing configuration, comprise the valve body for fitted seal and valve seat, described valve seat wall has upper and lower two annular grooves, be placed with O-ring seals in described upper groove, in described low groove, be placed with spring energy storage circle; Described spring energy storage circle comprises a ring support, and described support circumferentially has seal groove; Open Side Down for seal groove, and its sidewall has elasticity; In seal groove, seal ring is installed.
Improve as one, described valve body is positioned at below low groove and is provided with protruding block.Can prevent spring energy storage circle from surprisingly ejecting.
Preferred as one, the width of described O-ring seals is less than the degree of depth of upper groove; The annular diameters of O-ring seals is less than upper groove annular diameters.Make O-ring seals can have a certain amount of compressive deformation and draw high deformation, guarantee sealability.
Preferred as one, the width of described spring energy storage circle is less than the degree of depth of low groove; The annular diameters of spring energy storage circle is less than upper groove annular diameters.Make spring energy storage circle can have a certain amount of compressive deformation and draw high deformation, guarantee sealability.
Preferred as one, its resistance to high temperature described is good.
Usefulness of the present utility model is: this kind of seal form has sealing force not by pressure medium influence of fluctuations, simple, the non-damageable advantage of structure, the reliability sealed between valve seat and valve body be can significantly improve, valve and the long-term normal operation of high-pressure heater ensured.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark in figure: 1 valve body, 2 valve seats, 3 upper grooves, 4 O-ring seals, 5 low grooves, 6 supports, 7 seal rings, 8 blocks.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the utility model comprises valve body 1 for fitted seal and valve seat 2, described valve seat 2 sidewall has upper groove 3 and the low groove 5 of annular, is placed with O-ring seals 4, is placed with spring energy storage circle in described low groove 5 in described upper groove 3; Described spring energy storage circle comprises a ring support 6, and described support 6 circumferentially has seal groove; Open Side Down for seal groove, and its sidewall has elasticity; Seal ring 7 is installed in seal groove.Best valve body 1 is positioned at below low groove 5 and is provided with protruding block 8.The width of O-ring seals 4 is less than the degree of depth of upper groove 3; The annular diameters of O-ring seals 4 is less than upper groove annular diameters 3.The width of spring energy storage circle is less than the degree of depth of low groove 5; The annular diameters of spring energy storage circle is less than upper groove annular diameters 5.O-ring seals 4 is preferably FFKM circle.
When work, medium flows into from below, first enters low groove 5.Under the promotion of medium, the sidewall of seal groove on support 6 outwards extrudes by seal ring 7, serves seal action.Even if medium crosses low groove 5, also can be blocked by the O-ring seals 4 in upper groove 3, form two-stage sealing.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a feedwater three-way valve sealing configuration, comprise the valve body for fitted seal and valve seat, it is characterized in that: described valve seat wall has upper and lower two annular grooves, be placed with O-ring seals in described upper groove, in described low groove, be placed with spring energy storage circle; Described spring energy storage circle comprises a ring support, and described support circumferentially has seal groove; Open Side Down for seal groove, and its sidewall has elasticity; In seal groove, seal ring is installed.
2. one feedwater three-way valve sealing configuration according to claim 1, is characterized in that: described valve body is positioned at below low groove and is provided with protruding block.
3. one feedwater three-way valve sealing configuration according to claim 1, is characterized in that: the width of described O-ring seals is less than the degree of depth of upper groove; The annular diameters of O-ring seals is less than upper groove annular diameters.
4. one feedwater three-way valve sealing configuration according to claim 1, is characterized in that: the width of described spring energy storage circle is less than the degree of depth of low groove; The annular diameters of spring energy storage circle is less than upper groove annular diameters.
5. one feedwater three-way valve sealing configuration according to claim 1, is characterized in that: described O-ring seals is FFKM circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306153.9U CN204739224U (en) | 2015-05-13 | 2015-05-13 | Feedwater three -way valve seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306153.9U CN204739224U (en) | 2015-05-13 | 2015-05-13 | Feedwater three -way valve seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204739224U true CN204739224U (en) | 2015-11-04 |
Family
ID=54420961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520306153.9U Active CN204739224U (en) | 2015-05-13 | 2015-05-13 | Feedwater three -way valve seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204739224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907538A (en) * | 2017-04-06 | 2017-06-30 | 珠海格力电器股份有限公司 | Pipe joint arrangement and motorcar air conditioner |
-
2015
- 2015-05-13 CN CN201520306153.9U patent/CN204739224U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907538A (en) * | 2017-04-06 | 2017-06-30 | 珠海格力电器股份有限公司 | Pipe joint arrangement and motorcar air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |