CN205504035U - Telescoping valve elastic compensation seals internals structure - Google Patents
Telescoping valve elastic compensation seals internals structure Download PDFInfo
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- CN205504035U CN205504035U CN201620101530.XU CN201620101530U CN205504035U CN 205504035 U CN205504035 U CN 205504035U CN 201620101530 U CN201620101530 U CN 201620101530U CN 205504035 U CN205504035 U CN 205504035U
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- sealing ring
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Abstract
The utility model relates to a telescoping valve elastic compensation seals internals structure, its characterized in that: including metallic sealing ring, disk seat, case and sleeve, metallic sealing ring is ring shape, and metallic sealing ring's interior border is equipped with C shape circle, be equipped with an arc slot on the valve seat seal face, metallic sealing ring place on the disk seat terminal surface and compress tightly with the sleeve fixed, metallic sealing ring's flat part and the contact of disk seat end face seal, metallic sealing ring's C shape circle corresponds places arc ditch inslot in, C shape circle surface and arc slot bottom surface sealing contact, case lower extreme neighboring is along being equipped with case oblique cone face, sleeve lower extreme hole border is equipped with sleeve oblique cone face, case oblique cone face and sleeve oblique cone face respectively with the sealed cooperation of metallic sealing ring's C shape circle. The utility model discloses simple structure is ingenious, can compensate sealed between telescoping valve case and disk seat, have low, the sealed grade of processing cost high, maintain advantages such as convenient.
Description
Technical field
This utility model relates to a kind of novel telescoping valve and seals structure, and specifically a kind of telescoping valve elastic compensating seals inner parts structure, belongs to regulation valve technology field.
Background technology
Along with economic development, industrial automatic control level is constantly improving, and is thus also constantly improving the requirement of valve reliability in process control, the sealing property of valve be it is also proposed higher requirement.At present, in the industries such as chemical industry, iron and steel, metallurgy, oil, electric power, telescoping valve is very suitable for the advantages such as High Pressure Difference operating mode, dynamic stability is high, actuator thrust requirements is little because of it so that it is be widely used in various occasions.The inner parts structure of traditional telescoping valve is made up of spool, valve rod, the sleeve of band regulation window, spool and sleeve exists two sealing surfaces simultaneously, must assure that two sealing surfaces seal during valve closing simultaneously, and valve could be closed.The cooperation of spool, two sealing surface relative sizes in the height direction of sleeve is required high by this structure, the telescoping valve which results in this kind of inner parts structure is extremely difficult to higher leakage class, typically can only achieve III, IV grade of leakage, and leakage class V grade and being difficulty with above.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of telescoping valve elastic compensating is provided to seal inner parts structure, its simple and ingenious structure, can compensate for the sealing of telescoping valve spool and valve base chamber, has the advantages such as processing cost is low, sealing grade is high, easy to maintenance.
The technical scheme provided according to this utility model: telescoping valve elastic compensating seals inner parts structure, it is characterised in that: include metallic packing ring, valve seat, spool and sleeve；Described metallic packing ring is annular, and the inside edge of metallic packing ring is provided with C-shaped circle；Described sealing surface of seat is provided with an arcuate furrow, described metallic packing ring is placed on valve seat end face and is fixed with sleeve, the planar section of metallic packing ring contacts with valve seat end face seal, the C-shaped circle correspondence of metallic packing ring is placed in arcuate furrow, and C-shaped circle outer surface contacts with arcuate furrow sealing bottom surface；Described spool lower end periphery edge is provided with spool scalene cone, and endoporus edge, described sleeve lower end is provided with sleeve scalene cone, and described spool scalene cone and sleeve scalene cone seal with the C-shaped circle of metallic packing ring respectively and coordinate.
As further improvement of the utility model, the C-shaped circle of described metallic packing ring is built with helical spring.
As further improvement of the utility model, the angle of described spool scalene cone is 30 ~ 60 °, and the angle of described sleeve scalene cone is 30 ~ 60 °.
As further improvement of the utility model, the angle of described spool scalene cone and sleeve scalene cone is 45 °.
This utility model compared with prior art, has the advantage that
1, the metallic packing ring in this utility model itself can in certain compression zone compensation sealing, overcome the high request that two metallic sealing sections on conventional sleeve valve core and sleeve must seal simultaneously, reduce difficulty of processing, decrease processing cost.
2, this utility model utilizes the elastic compensating function of metallic packing ring, well ensure that the sealing property of two sealing surfaces of spool, can easily reach IV grade of leakage class, even realizes V grade and above leakage class.
3, worst hot case (> 290 DEG C) under, metal valve inner parts structure is affected generation linear expansion by high temperature, the relative altitude of conventional sleeve valve bimetallic (spring cone) seal changes, valve leak grade is caused to reduce, and the metallic packing ring that elastic compensating of the present utility model seals in inner parts structure has elastic compensating function, even if still can keep good sealing property when worst hot case.
4, spool or sleeve are as the consumable accessory of valve, and especially sealing surface easily damages, it is necessary to often repair or replacing, and after using elastic compensating of the present utility model to seal inner parts structure, change metallic packing ring and can realize valve maintenance, on-site maintenance low cost, interchangeability is good, operates faster.
Accompanying drawing explanation
Fig. 1 is installation application structure schematic diagram of the present utility model.
Fig. 2 is the A portion enlarged drawing in Fig. 1.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the utility model is described in further detail.
As shown in Figure 1 and Figure 2: the telescoping valve elastic compensating in embodiment seals inner parts structure and is mainly made up of metallic packing ring 1, valve seat 2, spool 3 and sleeve 4；Described metallic packing ring 1 is annular, and the inside edge of metallic packing ring 1 is provided with C-shaped circle 1a；Described valve seat 2 sealing surface is provided with an arcuate furrow 2a, described metallic packing ring 1 is placed on valve seat 2 end face and is fixed with sleeve 4, the planar section of metallic packing ring 1 contacts with valve seat 2 end face seal, the C-shaped circle 1a correspondence of metallic packing ring 1 is placed in arcuate furrow 2a, and C-shaped circle 1a outer surface contacts with arcuate furrow 2a sealing bottom surface；Described spool 3 lower end periphery edge is provided with spool scalene cone 3a, endoporus edge, described sleeve 4 lower end is provided with sleeve scalene cone 4a, described spool scalene cone 3a and sleeve scalene cone 4a seals with the C-shaped circle 1a of metallic packing ring 1 respectively and coordinates, and the angle of described spool scalene cone 3a and sleeve scalene cone 4a is 45 °.
As it is shown in figure 1, in the present embodiment, the C-shaped circle 1a of described metallic packing ring 1 is built with helical spring 5.Described helical spring 5 can strengthen the elastic compensating ability of metallic packing ring 1C shape circle 1a.
Operation principle of the present utility model and work process are as follows:
As shown in Figure 1, there are two sealing surfaces in the spool 3 of sleeve 4 valve at differing heights, when after valve closing, there is sealing at two in spool 3 and sleeve 4, valve seat 2 and metallic packing ring 1: is the hard sealing of spool 3 upper end sealing surface and sleeve 4 upper end sealing surface composition at one, after sealing herein, the spool scalene cone 3a of spool 3 lower end pushes down described metallic packing ring 1, form the elastic packing at another, owing to metallic packing ring 1 itself has certain elasticity, can in certain compression zone compensation sealing, be prevented effectively from because mismachining tolerance causes the situation of poor sealing performance.
Additionally, valve is after long-term use, sealing surface can produce abrasion or corrosion unavoidably, and owing to metallic packing ring 1 itself has elasticity, add the C-shaped circle 1a of metallic packing ring 1 built with helical spring 5, so that the sealing surface that spool 3 can be worn and torn or corrode by metallic packing ring 1 within the specific limits carries out effective compensation, it is to avoid or reduce valve leak, extend the service life of valve.
Claims (4)
1. telescoping valve elastic compensating seals inner parts structure, it is characterised in that: include metallic packing ring (1), valve seat (2), spool (3) and sleeve (4)；Described metallic packing ring (1) is annular, and the inside edge of metallic packing ring (1) is provided with C-shaped circle (1a)；Described valve seat (2) sealing surface is provided with an arcuate furrow (2a), described metallic packing ring (1) is placed on valve seat (2) end face and is fixed with sleeve (4), the planar section of metallic packing ring (1) contacts with valve seat (2) end face seal, C-shaped circle (1a) correspondence of metallic packing ring (1) is placed in arcuate furrow (2a), and C-shaped circle (1a) outer surface contacts with arcuate furrow (2a) sealing bottom surface；Described spool (3) lower end periphery edge is provided with spool scalene cone (3a), endoporus edge, described sleeve (4) lower end is provided with sleeve scalene cone (4a), and described spool scalene cone (3a) and sleeve scalene cone (4a) seal with the C-shaped circle (1a) of metallic packing ring (1) respectively and coordinate.
2. telescoping valve elastic compensating as claimed in claim 1 seals inner parts structure, it is characterised in that: the C-shaped circle (1a) of described metallic packing ring (1) is built with helical spring (5).
3. telescoping valve elastic compensating as claimed in claim 1 seals inner parts structure, it is characterised in that: the angle of described spool scalene cone (3a) is 30 ~ 60 °, and the angle of described sleeve scalene cone (4a) is 30 ~ 60 °.
4. telescoping valve elastic compensating as claimed in claim 1 seals inner parts structure, it is characterised in that: the angle of described spool scalene cone (3a) and sleeve scalene cone (4a) is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101530.XU CN205504035U (en) | 2016-02-01 | 2016-02-01 | Telescoping valve elastic compensation seals internals structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101530.XU CN205504035U (en) | 2016-02-01 | 2016-02-01 | Telescoping valve elastic compensation seals internals structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504035U true CN205504035U (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620101530.XU Active CN205504035U (en) | 2016-02-01 | 2016-02-01 | Telescoping valve elastic compensation seals internals structure |
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| CN (1) | CN205504035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443786A (en) * | 2016-02-01 | 2016-03-30 | 无锡智能自控工程股份有限公司 | Elastic compensation sealing inner part structure of telescopic valve |
-
2016
- 2016-02-01 CN CN201620101530.XU patent/CN205504035U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443786A (en) * | 2016-02-01 | 2016-03-30 | 无锡智能自控工程股份有限公司 | Elastic compensation sealing inner part structure of telescopic valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |