CN204226688U - A kind of modified model choke stop evacuation valve valve seat - Google Patents
A kind of modified model choke stop evacuation valve valve seat Download PDFInfo
- Publication number
- CN204226688U CN204226688U CN201420690892.8U CN201420690892U CN204226688U CN 204226688 U CN204226688 U CN 204226688U CN 201420690892 U CN201420690892 U CN 201420690892U CN 204226688 U CN204226688 U CN 204226688U
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- Prior art keywords
- valve
- valve seat
- face
- modified model
- inferior pyramidal
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Abstract
The utility model discloses a kind of modified model choke stop evacuation valve valve seat, belong to valve field.This modified model choke stop evacuation valve valve seat is circular, is provided with outwardly positioning table in the middle part of excircle, and outer peripheral surface forms upper and lower two right angle steps; Described valve seat inner peripheral surface by upper conical, inferior pyramidal face and facing directly forms; Described upper conical is the sealing surface coordinated with flap, sealing surface weld deposit or be coated with wear-resisting, anticorrosive hard alloy layer or Tungsten carbite hardstanding; Described inferior pyramidal face connects into step by facing directly with upper conical face, inferior pyramidal face and pressure ring adaptation.The utility model is adopted effectively to solve the problem of self function and protecting.
Description
Technical field
The utility model relates to valve field, specifically a kind of modified model choke stop evacuation valve valve seat.
Background technique
Choke stop evacuation valve is a kind of double seal valve, plays in the conveyance conduit being mainly used in oil, rock gas, coal gas, blau gas etc., uses usually used as regulable control or cut-out.Such valve is a kind of novel throttling, cut-off, emptying product, has multistage throttle effect, the features such as restriction effect is obvious, sealing is reliable, convenient operating maintenance.
At existing choke stop evacuation valve in the throttling of valve, cut-out, equalizing orifice arranges to alleviate in operation torsion, combination seal etc. all very much progress.But in actual conditions application, still there are distinct issues: be mainly reflected in the valve good operation period not long, bad working environments occurs that quality problems are many.Particularly when High Pressure Difference, operating mode medium unholiness (such as, dust, body refuse etc.), general valve seal easily damages and occurs that the situation of interior leakage is more, and even serious jam appears in some valve.Tracing it to its cause, it is not exclusively reasonable to be mainly structural design: although valve design function all has configuration, and in fact its Functional Design structure can not extensively be suitable for, and its structure exists wretched insufficiency in self function and protecting.
Model utility content
The utility model aims to provide a kind of modified model choke stop evacuation valve valve seat, to solve the problem of self function and protecting.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of modified model choke stop evacuation valve valve seat, it is characterized in that: described valve seat is circular, is provided with outwardly positioning table in the middle part of excircle, outer peripheral surface forms upper and lower two right angle steps; Described valve seat inner peripheral surface by upper conical, inferior pyramidal face and facing directly forms; Described upper conical is the sealing surface coordinated with flap, sealing surface weld deposit or be coated with wear-resisting, anticorrosive hard alloy layer or Tungsten carbite hardstanding; Described inferior pyramidal face connects into step by facing directly with upper conical face, inferior pyramidal face and pressure ring adaptation.
Further, height is faced described in directly adaptive with the boss height on pressure ring.
Further, the spacing scarce adaptation of described upper right angle step and valve pocket bottom, lower right angle step and valve body adaptation.
The beneficial effects of the utility model are:
One, form two right angle steps at the outer peripheral surface of valve seat respectively by positioning table, topping bar, it is adaptive to lack with valve pocket lower limit, lower right angle step and valve body adaptation.Three location like this, this shape makes valve seat just be arranged in valve body, and without the need to other screw energy orientation tools, when dismantling, only need take out valve pocket then three's locate failure, namely valve seat loosens, very convenient taking-up.
Two, valve seat inner peripheral surface by upper conical, inferior pyramidal face and facing directly forms, upper and lower conical surface and face formation step directly, valve seat like this and pressure ring coordinate and form slow nip structural design.Valve opening moment, hard, soft sealing face that flap, soft seal circle and valve seat are formed successively are thrown off, and in this process, the boss of pressure ring forms slow nip with the segment length that coordinates faced directly of valve seat, and medium still can not enter sealing surface immediately.Slow nip structural design, prevent valve open/close moment soft seal from being torn by high pressure, prevent high pressure valve from opening and closing moment simultaneously, easily the problem in damage soft seal face, ensure that this structure is applicable to the reliability of high, medium and low voltage simultaneously.
Three, conical seal (contact) face is beneficial to purging, easily removes the foul on sealing surface.Conical seal (contact) face is unfavorable for that foreign material are piled up or deposition, and is very easy to purge totally, prevents sealing surface extruded by hard object or scratch.
Accompanying drawing explanation
Fig. 1 is the modified model choke stop evacuation valve valve seat construction schematic diagram that the utility model provides.
Fig. 2 adopts modified model choke stop evacuation valve structural representation of the present utility model.
Mark in figure: 3 for valve seat, 35a1 be upper conical, 35a2 be inferior pyramidal face, 35a3 for facing directly, 45 be positioning table.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.
As shown in Figure 1, a kind of modified model choke stop evacuation valve valve seat, is characterized in that: described valve seat 3 is for circular, and be provided with outwardly positioning table 45 in the middle part of excircle, outer peripheral surface forms upper and lower two right angle steps; Described valve seat 3 inner peripheral surface is by upper conical 35a1, inferior pyramidal face 35a2 and face 35a3 directly and form; Described upper conical 35a1 is the sealing surface coordinated with flap, sealing surface weld deposit or be coated with wear-resisting, anticorrosive hard alloy layer or Tungsten carbite hardstanding; Described inferior pyramidal face 35a2 by facing 35a3 directly and upper conical 35a1 connects into step, inferior pyramidal face 35a2 and pressure ring adaptive. described in face 35a3 height directly and the boss height on pressure ring adaptive.The spacing scarce adaptation of described upper right angle step and valve pocket bottom, lower right angle step and valve body adaptation.
When mounted, topping bar, it is adaptive to lack with valve pocket lower limit, lower right angle step and valve body adaptation.Three location like this, this shape makes valve seat just be arranged in valve body, and without the need to other screw energy orientation tools, when dismantling, only need take out valve pocket then three's locate failure, namely valve seat loosens, very convenient taking-up.In use, valve opening moment, hard, soft sealing face that flap, soft seal circle and valve seat are formed successively are thrown off, and in this process, the boss of pressure ring forms slow nip with the segment length that coordinates facing 35a3 directly of valve seat, and medium still can not enter sealing surface immediately.Slow nip structural design, prevent valve open/close moment soft seal from being torn by high pressure, prevent high pressure valve from opening and closing moment simultaneously, easily the problem in damage soft seal face, ensure that this structure is applicable to the reliability of high, medium and low voltage simultaneously.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. a modified model choke stop evacuation valve valve seat, is characterized in that: described valve seat is circular, is provided with outwardly positioning table in the middle part of excircle, and outer peripheral surface forms upper and lower two right angle steps; Described valve seat inner peripheral surface by upper conical, inferior pyramidal face and facing directly forms; Described upper conical is the sealing surface coordinated with flap, sealing surface weld deposit or be coated with wear-resisting, anticorrosive hard alloy layer or Tungsten carbite hardstanding; Described inferior pyramidal face connects into step by facing directly with upper conical face, inferior pyramidal face and pressure ring adaptation.
2. modified model choke stop evacuation valve valve seat according to claim 1, is characterized in that: described in face height directly and boss height on pressure ring is adaptive.
3. modified model choke stop evacuation valve valve seat according to claim 1, is characterized in that: the spacing scarce adaptation of described upper right angle step and valve pocket bottom, lower right angle step and valve body adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690892.8U CN204226688U (en) | 2014-11-18 | 2014-11-18 | A kind of modified model choke stop evacuation valve valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690892.8U CN204226688U (en) | 2014-11-18 | 2014-11-18 | A kind of modified model choke stop evacuation valve valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226688U true CN204226688U (en) | 2015-03-25 |
Family
ID=52924787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420690892.8U Expired - Fee Related CN204226688U (en) | 2014-11-18 | 2014-11-18 | A kind of modified model choke stop evacuation valve valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204226688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315171A (en) * | 2014-11-18 | 2015-01-28 | 自贡自高阀门有限公司 | Improved valve seat for throttling stop emptying valve |
| CN109514059A (en) * | 2018-11-23 | 2019-03-26 | 东方电气集团东方汽轮机有限公司 | A kind of sliding surface manufacturing method of valve parts |
-
2014
- 2014-11-18 CN CN201420690892.8U patent/CN204226688U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315171A (en) * | 2014-11-18 | 2015-01-28 | 自贡自高阀门有限公司 | Improved valve seat for throttling stop emptying valve |
| CN109514059A (en) * | 2018-11-23 | 2019-03-26 | 东方电气集团东方汽轮机有限公司 | A kind of sliding surface manufacturing method of valve parts |
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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 |
Granted publication date: 20150325 Termination date: 20151118 |
|
| EXPY | Termination of patent right or utility model |