CN203836268U - High-temperature abrasion-resistant hard seal fixed ball valve - Google Patents
High-temperature abrasion-resistant hard seal fixed ball valve Download PDFInfo
- Publication number
- CN203836268U CN203836268U CN201420251367.6U CN201420251367U CN203836268U CN 203836268 U CN203836268 U CN 203836268U CN 201420251367 U CN201420251367 U CN 201420251367U CN 203836268 U CN203836268 U CN 203836268U
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- valve
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- adjusting screw
- valve seat
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Abstract
The utility model relates to a high-temperature abrasion-resistant hard seal fixed ball valve. The high-temperature abrasion-resistant hard seal fixed ball valve comprises a valve body, a valve base, a valve deck, a ball body and a valve rod. An adjustable seal device is installed between the outer round face of the valve base and the inner wall of a channel of the valve deck and composed of a graphite seal ring, an elastic junk ring, a tightening ring, an adjusting screw and a pendant collet, wherein the end faces on the two sides of the graphite seal ring are inclined faces, the inclined face on one side is matched with the inclined face of one end of the elastic junk ring, the inclined face on the other side is matched with an inclined-face step in the channel of the valve deck, the other end of the elastic junk ring is provided with an annular protruding shoulder, an annular groove is formed in the middle of the outer round face of the annular protruding shoulder, the tightening ring is installed in the channel of the valve deck through the pendant collet, the adjusting screw is installed on the tightening ring through threads, and the end of the adjusting screw abuts against the end face of the annular protruding shoulder of the elastic junk ring. The graphite seal ring expands axially at high temperature, so that the radial expansion quantity is reduced, the floatability of the valve base is improved, and high-temperature opening and closing performance is good. The high-temperature abrasion-resistant hard seal fixed ball valve is suitable for working conditions of the high temperature, abrasion and corrosive media.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of hard seal fixing ball valve.The utility model is applicable to high temperature, the abrasion and corrosion medium operating mode of oil, petrochemical industry, Coal Chemical Industry industry.
Background technique
Hard seal fixing ball valve is widely used in high temperature, abrasiveness medium operating mode, generally by valve body, valve seat, spheroid, valve rod, valve gap, formed, spheroid and valve seat adopt and are firmly sealed and matched, in order to prevent high-temperature expansion, spheroid and valve seat is stuck, valve seat generally adopts floating structure, utilizes valve seat to float and absorbs the high-temperature expansion between spheroid and valve seat.The floating valve seat of existing hard seal ball valve is general to be adopted in the valve seat back side and valve body mounting spring between step radially, utilizes the stretchability of spring to guarantee spheroid and valve seat reliable fit.Meanwhile, for valve seat medium impurity enters spring chamber, spring chamber is stopped up and to make the spring effect that follows the string, generally between valve seat periphery and valve channel inwall, graphite-seal ring is set, guarantee that valve seat is reliably unsteady.Its major defect is that graphite-seal ring is pressed between valve body and valve seat by trim ring, easily produces radial expansion under worst hot case, by valve seat locking, makes valve seat lose floatability, and under worst hot case, functional reliability is poor.
Summary of the invention
The purpose of this utility model is the shortcoming existing for prior art, and the high-temperature wearable hard seal fixing ball valve that under a kind of worst hot case, functional reliability is good is provided.
The technical solution of the utility model comprises valve body, valve seat, valve gap, spheroid, valve rod, spheroid upper end is fixedly connected with valve rod, lower end is positioned on valve body by gudgeon, sealing surface of seat and spherome surface be built-up welding and coated with hard wear resistant alloy material respectively, the valve seat back side and valve body are radially provided with spring between step, mainly to be provided with adjustable sealing device between valve seat periphery and valve gap vias inner walls, this adjustable sealing device is by graphite-seal ring, elasticity pressure ring, fastening ring, adjusting screw, pendant collet forms, graphite-seal ring both sides end face is inclined-plane, the end chamfer of one skew back face and elasticity pressure ring cooperatively interacts, incline bench in opposite side inclined-plane and valve gap passage cooperatively interacts, the other end of elasticity pressure ring is shaped with annular convex shoulder, in the middle of annular convex shoulder periphery, be shaped with annular groove, fastening ring is installed in valve gap passage by pendant collet, adjusting screw is installed on fastening ring by screw thread, the annular convex shoulder end face of adjusting screw end and elasticity pressure ring contacts.
In above technological scheme, on gudgeon, be shaped with the pollutant exhaust hole of connecting valve intracoelomic cavity, blowdown valve is installed on pollutant exhaust hole.
The utility model has the advantages that between valve seat and valve gap vias inner walls and be provided with adjustable sealing device, utilize the inclined-plane cooperation of graphite-seal ring and the elastic reaction of elasticity pressure ring, make under graphite-seal ring high temperature to axial expansion, reduce radial expansion volume, the floatability that improves valve seat, its high temperature start-stop performance is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged view at A place in the utility model Fig. 1.
Embodiment
High-temperature wearable hard seal fixing ball valve as shown in Figure 1, comprise valve body 2, valve seat 17, valve gap 1, spheroid 5, valve rod 6, spheroid 5 upper ends are fixedly connected with valve rod 6, lower end is positioned on valve body 2 by gudgeon 4, valve seat 17 sealing surfaces and spheroid 5 surfaces are built-up welding and coated with hard wear resistant alloy material respectively, improve abrasion resistance properties, valve seat 17 back sides and valve body 2 are radially provided with spring 16 between step, between valve seat 17 peripheries and valve gap 1 vias inner walls, be provided with adjustable sealing device, this adjustable sealing device is by graphite-seal ring 15, elasticity pressure ring 14, fastening ring 13, adjusting screw 11, pendant collet 12 forms, graphite-seal ring 15 both sides end faces are inclined-plane, the end chamfer of one skew back face and elasticity pressure ring 14 cooperatively interacts, incline bench in opposite side inclined-plane and valve gap 1 passage cooperatively interacts, at high temperature graphite-seal ring 15 seals to the expansion wedging of inclined-plane, two ends, the other end of elasticity pressure ring 14 is shaped with annular convex shoulder, in the middle of annular convex shoulder periphery, be shaped with annular groove, make the annular convex shoulder of elasticity pressure ring 14 there is elasticity, at high temperature can absorb the axial expansion amount of graphite-seal ring 15.Fastening ring 13 is installed in valve gap 1 passage by pendant collet 12, and adjusting screw 11 is installed on fastening ring 13 by screw thread, and the annular convex shoulder end face of adjusting screw 11 ends and elasticity pressure ring 14 contacts, as shown in Figure 2.By adjusting the impacting force that adjusting screw 11 can 14 pairs of graphite-seal rings 15 of adjustable elastic pressure ring.
On gudgeon 4, be shaped with the pollutant exhaust hole that is communicated with valve body 2 inner chambers, blowdown valve 3 is installed on pollutant exhaust hole.Between valve rod 6 and valve body 2, axle sleeve 7 is housed, between axle sleeve 7 and valve rod 6, stuffing box packing 8 is installed, sealing filler 8 is installed by filler pressing sleeve 9 and hold-down grid 10.
Claims (2)
1. a high-temperature wearable hard seal fixing ball valve, comprise valve body (2), valve seat (17), valve gap (1), spheroid (5), valve rod (6), spheroid (5) upper end is fixedly connected with valve rod (6), lower end is positioned on valve body (2) by gudgeon (4), valve seat (17) sealing surface and spheroid (5) surface be built-up welding and coated with hard wear resistant alloy material respectively, valve seat (17) back side and valve body (2) are radially provided with spring (16) between step, it is characterized in that being provided with adjustable sealing device between valve seat (17) periphery and valve gap (1) vias inner walls, this adjustable sealing device is by graphite-seal ring (15), elasticity pressure ring (14), fastening ring (13), adjusting screw (11), pendant collet (12) forms, graphite-seal ring (15) both sides end face is inclined-plane, the end chamfer of one skew back face and elasticity pressure ring (14) cooperatively interacts, incline bench in opposite side inclined-plane and valve gap (1) passage cooperatively interacts, the other end of elasticity pressure ring (14) is shaped with annular convex shoulder, in the middle of annular convex shoulder periphery, be shaped with annular groove, fastening ring (13) is installed in valve gap (1) passage by pendant collet (12), adjusting screw (11) is installed on fastening ring (13) by screw thread, the annular convex shoulder end face of adjusting screw (11) end and elasticity pressure ring (14) contacts.
2. high-temperature wearable hard seal fixing ball valve according to claim 1, is characterized in that being shaped with the pollutant exhaust hole that is communicated with valve body (2) inner chamber on gudgeon (4), and blowdown valve (3) is installed on pollutant exhaust hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251367.6U CN203836268U (en) | 2014-05-04 | 2014-05-04 | High-temperature abrasion-resistant hard seal fixed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251367.6U CN203836268U (en) | 2014-05-04 | 2014-05-04 | High-temperature abrasion-resistant hard seal fixed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836268U true CN203836268U (en) | 2014-09-17 |
Family
ID=51514110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251367.6U Expired - Fee Related CN203836268U (en) | 2014-05-04 | 2014-05-04 | High-temperature abrasion-resistant hard seal fixed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836268U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838364A (en) * | 2017-03-20 | 2017-06-13 | 长沙理工大学 | Drain valve of washing machine |
| CN107420573A (en) * | 2017-06-26 | 2017-12-01 | 王瑞卿 | A kind of pretension compensates movable valve base high temperature high voltage resistant two-way hard seal spiral valve |
| CN114215949A (en) * | 2021-11-11 | 2022-03-22 | 洛阳双瑞特种装备有限公司 | Self-sealing device for preventing valve from leaking outside under high-temperature and high-pressure working conditions |
-
2014
- 2014-05-04 CN CN201420251367.6U patent/CN203836268U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838364A (en) * | 2017-03-20 | 2017-06-13 | 长沙理工大学 | Drain valve of washing machine |
| CN106838364B (en) * | 2017-03-20 | 2018-08-17 | 长沙理工大学 | Drain valve of washing machine |
| CN107420573A (en) * | 2017-06-26 | 2017-12-01 | 王瑞卿 | A kind of pretension compensates movable valve base high temperature high voltage resistant two-way hard seal spiral valve |
| CN107420573B (en) * | 2017-06-26 | 2023-11-24 | 开封瑞科阀门有限公司 | High-temperature-resistant high-pressure-resistant bidirectional hard sealing ball valve with pretension compensation movable valve seat |
| CN114215949A (en) * | 2021-11-11 | 2022-03-22 | 洛阳双瑞特种装备有限公司 | Self-sealing device for preventing valve from leaking outside under high-temperature and high-pressure working conditions |
| CN114215949B (en) * | 2021-11-11 | 2024-05-28 | 中船双瑞(洛阳)特种装备股份有限公司 | Self-sealing device for preventing valve from leaking outside under high-temperature high-pressure working condition |
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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: 20140917 |