CN203488731U - Floating-type valve-seat thermal butterfly valve - Google Patents
Floating-type valve-seat thermal butterfly valve Download PDFInfo
- Publication number
- CN203488731U CN203488731U CN201320385872.5U CN201320385872U CN203488731U CN 203488731 U CN203488731 U CN 203488731U CN 201320385872 U CN201320385872 U CN 201320385872U CN 203488731 U CN203488731 U CN 203488731U
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- valve
- seat
- valve seat
- spring
- butterfly
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Abstract
The utility model discloses a floating-type valve-seat thermal butterfly valve, which comprises a valve body, a butterfly plate, a valve rod and a valve seat with dual piston effects, wherein the butterfly plate is installed in a passageway of the valve body by the valve rod and is rotated around the valve rod, the valve seat with the dual piston effects is disposed between the valve body and sealing faces around the butterfly plate, the valve seat with the dual piston effects comprises a valve seat and a spring base matched therewith, a plurality of spring holes are distributed uniformly in the circumferential direction of the spring base, and the valve seat with the dual piston effects can float freely along the axis of the valve body in order to keep close contact between sealing faces of the valve base and the butterfly plate. The valve rod in the utility model is equipped with loaded PTFE sealing of an elastic component in order to ensure reliability of dynamic load sealing.
Description
Technical field
The utility model discloses a kind of floating type valve seat heating power butterfly valve, by International Patent Classification (IPC) (IPC), divide and belong to butterfly valve manufacturing technology field, be especially applicable to the conveying of the heating pipeline high-temperature steams such as petroleum gas long-distance transport pipes PetroChina Company Limited., gas medium and metallurgy, light industry, electric power, urban heat supplying.
Background technique
Butterfly valve refers to that closure member (flap or butterfly plate) is disk, rotates to reach a kind of valve of open and close around valve shaft, and on pipeline, main rising cut off and throttling action.The sealing problem of butterfly valve is one of problem of industry personnel's Improvement always, metal current seal butterfly valve common are multiple-layer metal sealing and U-shaped circle metal sealing: multiple-layer metal seal butterfly valve wherein, tinsel interlayer Expanded graphite on butterfly plate is easily damaged by medium punching, medium temperature changes and easily reduces sealability, and it is large that the imposed deformation of metal sealing sheet makes to open and close moment, sealing was easily lost efficacy; And the mechanism of U-shaped circle metallic sealing butterfly valve to be taper butterfly plate make U-shaped seal ring imposed deformation fitted seal opens and closes moment larger.And the elastic fatigue of U-shaped circle can make butterfly valve seal hydraulic performance decline, sealing area is restricted, can not restore funcitons after crossing the border.China document CN201436427 discloses a kind of floating valve seat bidirectional metallic seal butterfly valve, in valve flowing channel one side and with the sealing surface of butterfly plate, match and form the seal valve seat of sealing pair, sealing valve seat consists of floating valve seat and trim ring, one side and the butterfly plate of floating valve seat contact, opposite side contacts with valve body, trim ring respectively, yet, floating valve seat in the document is only made microdisplacement under pressure medium, under low-pressure state, can not realize valve seat and just seal, and floating valve seat outside is spacing by trim ring.
Model utility content
For the deficiencies in the prior art, the utility model provides a kind of floating type valve seat heating power butterfly valve rational in infrastructure, and this butterfly valve adopts double-piston effect valve seat can guarantee reliably the two way sealed to medium.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of floating type valve seat heating power butterfly valve, comprise valve body, butterfly plate and valve rod, butterfly plate is installed on the runner of valve body and is rotated around valve rod by valve rod, the runner mouth of the valve body formation collar flange that extends internally, between collar flange inner side and all side sealing faces of butterfly plate, be provided with double-piston effect valve seat, this double-piston effect valve seat comprises valve seat and the spring seat matching, spring seat is circumferentially evenly distributed with some spring eyes, each hole is provided with a spring, spring one end contacts on spring seat, the spring the other end contacts at valve body collar flange madial wall, described double-piston effect valve seat can and then make sealing surface of seat and butterfly plate maintenance close contact along valve axis free floating.
Further, between described butterfly plate and valve seat, be sealed into the shape metallic leak-proof structure of sphere to sphere, the Flow diameter corresponding to ball sealer face of butterfly plate is slightly larger than the bore of valve flowing channel mouth place collar flange.
Further, the sealing sphere hard chromium plating of described butterfly plate, corresponding valve base sealing sphere built-up welding STL stellite, both coordinate the sealing pair that forms metal to metal.
Further, described valve seat is comprised of base ring and integrated seat cylinder, spring socket sleeve is on seat cylinder and press in base ring, the supporting surface that base ring contacts with spring seat is inclined-plane, this inclined-plane is 12 °-18 ° with the sagittal plane angle in seat cylinder week, the indentation, there that seat cylinder extends to valve body flange vertically forms dustproof shirt rim, described double-piston effect valve seat is placed in the enclosed space that valve seat and valve body form, and affects that double-piston effect valve seat is normal to be used or reduction of service life to prevent impurity in pipeline etc. from entering into above-mentioned space.
Further, described spring seat periphery wall and inner circle wall are provided with circular groove and are furnished with o shape circle and contact with valve body and valve base sealing respectively.
Further, described valve rod is provided with the PTFE seal ring that elastic element loads, and this elastic element is helical spring.
The utlity model has following beneficial effect:
1, the utility model butterfly valve forged steel is manufactured, and intensity is high.Compact structure, sealing is reliable, and flexible and convenient operation has switch indication and mechanical position limitation;
2, the seal form of heating power butterfly valve is prime sealing, washing away of the resistance to granule medium of sealing pair that it is comprised of metal-plated hard chrome and stellite and fouling, valve seat is adopted as double-piston effect form, can under low voltage difference condition, by the spring after valve seat, load along the axis free floating of valve body, obtain initial sealing, pressure medium increase along with pipeline upstream or downstream, supplement valve seat thrust, made sealing surface of seat and butterfly plate keep close contact, reached better sealing effect;
3, the shape metallic leak-proof structure of heating power butterfly valve adopts the sealing of sphere to sphere.Floating valve seat can prevent that medium temperature from changing the sealed force moment causing and increasing.Overcome the drawback of other types metallic sealing butterfly valves, as multiple-layer metal seal butterfly valve, the tinsel interlayer Expanded graphite on butterfly plate is easily damaged by medium punching, and medium temperature changes and easily reduces sealability, and it is large that the imposed deformation of metal sealing sheet makes to open and close moment, sealing was easily lost efficacy; The mechanism of U-shaped circle metallic sealing butterfly valve is that taper butterfly plate makes U-shaped seal ring imposed deformation fitted seal, open and close moment larger, and the elastic fatigue of U-shaped circle can make butterfly valve seal hydraulic performance decline, and sealing area is restricted, can not restore funcitons after crossing the border;
4, the valve stem seal of heating power butterfly valve adopts spring-loaded U-shaped circle and multiple-sealed seal ring, and ageing-resistant macromolecular material and sealing configuration can overcome filler because of the deformation of difference variation and the long-term wearing and tearing of using, and have reached non-maintaining effect.
Accompanying drawing explanation
Fig. 1 is the utility model sectional view;
Fig. 2 is the utility model profile;
Fig. 3 is the utility model valve body sectional view;
Fig. 4 is the utility model valve seat sectional view;
Fig. 5 is the utility model spring seat sectional view;
Fig. 6 is the utility model spring seat side view;
Fig. 7 is the utility model butterfly plate sectional view;
Fig. 8 is the utility model butterfly plate plan view;
Fig. 9 is the utility model valve stem seal schematic diagram;
Figure 10 is the utility model double-piston effect valve seat use principle one schematic diagram;
Figure 11 is another schematic diagram of the utility model double-piston effect valve seat use principle.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Embodiment: refer to Fig. 1 to Figure 11, a kind of floating type valve seat heating power butterfly valve, comprise valve body 1, butterfly plate 2 and valve rod 3, butterfly plate 2 is installed on the runner of valve body 1 and is rotated around valve rod 3 by valve rod 3, the runner mouth of valve body 1 extends internally and forms collar flange 100, between collar flange inner side and all side sealing faces of butterfly plate, be provided with double-piston effect valve seat 4, this double-piston effect valve seat comprises valve seat 41 and the spring seat 42 matching, spring seat 42 is circumferentially evenly distributed with some spring slotted eyes 420, each slotted eye is provided with a spring 43, spring 43 one end contact on spring seat 42, spring 43 the other ends contact at valve body collar flange 100 madial walls, and preset clearance L between valve body collar flange 100 madial walls and spring seat, described double-piston effect valve seat 4 can and then make valve seat 41 sealing surfaces and butterfly plate 2 maintenance close contacts along valve axis free floating.Between the utility model butterfly plate 2 and valve seat 41, be sealed into the shape metallic leak-proof structure of sphere to sphere, the Flow diameter R1 corresponding to ball sealer face of butterfly plate 2 is slightly larger than the bore R2 of valve flowing channel mouth place collar flange.The sealing sphere Hard Chromium Coating 21 of described butterfly plate 2, corresponding valve seat 41 ball sealer surface build-up welding STL stellite layers 410, both coordinate the sealing pair that forms metal to metal.
Refer to Fig. 1, Fig. 4 and Fig. 5, Fig. 6, valve seat 41 of the present utility model is by base ring 411 and integrated seat cylinder 412, spring seat 42 is placed on seat cylinder 412 and presses in base ring, the supporting surface that base ring contacts with spring seat is inclined-plane 4110, this inclined-plane is 12 °-18 ° with the sagittal plane angle α in seat cylinder week, the indentation, there that seat cylinder extends to valve body flange vertically forms dustproof shirt rim 4120, described double-piston effect valve seat 4 is placed in the enclosed space of valve seat 41 and valve body 1 composition, to prevent impurity in pipeline etc. from entering into above-mentioned space, affect that double-piston effect valve seat is normal to be used or reduction of service life.At spring seat 42 periphery walls and inner circle wall, be provided with circular groove 421,422 and be furnished with o shape circle and contact with valve body and valve base sealing respectively.
Refer to Fig. 9, the utility model valve rod 3 is provided with the PTFE seal ring that elastic element loads, and valve body 1 junction of valve rod 3 is also provided with seal ring 5, and the junction plane of seal ring and valve rod and valve body adds 6 sealings of multiple tracks rubber o-ring.
When the utility model is used, when MEDIA FLOW is to as shown in figure 10 time, the forward thrust (right side arrow) of medium is greater than deboost (left side arrow), and floating valve seat is mobile to guarantee reliable sealing under medium effect; When MEDIA FLOW is to as shown in figure 11 time, medium deboost (right side arrow) is greater than forward thrust (left side arrow), and floating valve seat is equally to butterfly plate extruding, thereby guarantees valve seal.
The utility model valve has following features:
1, valve body use material is ASTM A105, is the proprietary material of high temperature pressure vessel, and valve can, for a long time 250 ℃ of <, be worked under the working environment of < 5.0Mp;
2, the sealing pair of valve adopts metal to metal, can resist the damage to sealing surfaces of other granule foreign in medium;
3, the special double-piston effect valve seat of the utility model can guarantee the two way sealed to medium reliably, and the spring seat structure of valve can compensate temperature difference influence, makes seal pressure keep stable;
4, the utility model valve rod guarantees that long-term static rear uses of valve can action message, and in the PTFE sealing that the elastic element of valve rod loads and seal ring, multiple tracks rubber seal guarantees that dynamic load seals reliably, adjusts easy;
5, the internals part such as the butterfly plate of the utility model valve, valve seat, spring seat is made of stainless steel, can corrosion, and the utility model three eccentric structures reduce valve seal friction force square, and valve opening and closing action is fast, can do Flow-rate adjustment and use; The utility model welded structure is convenient to the connection with heat distribution pipeline;
6, the utility model valve can configure pneumatic or Electric actuator, realizes automation and controls; Valve can buriedly be installed, and has special-purpose top operational drive unit.
Above record, only, for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (6)
1. a floating type valve seat heating power butterfly valve, it is characterized in that: comprise valve body, butterfly plate, valve rod and double-piston effect valve seat, butterfly plate is installed on the runner of valve body and is rotated around valve rod by valve rod, the runner mouth of the valve body formation collar flange that extends internally, between collar flange inner side and all side sealing faces of butterfly plate, be provided with double-piston effect valve seat, this double-piston effect valve seat comprises valve seat and the spring seat matching, spring seat is circumferentially evenly distributed with some spring eyes, each hole is provided with a spring, spring one end contacts on spring seat, the spring the other end contacts at valve body collar flange madial wall, described double-piston effect valve seat can and then make sealing surface of seat and butterfly plate maintenance close contact along valve axis free floating.
2. floating type valve seat heating power butterfly valve according to claim 1, it is characterized in that: between described butterfly plate and valve seat, be sealed into the shape metallic leak-proof structure of sphere to sphere, the Flow diameter corresponding to ball sealer face of butterfly plate is slightly larger than the bore of valve flowing channel mouth place collar flange.
3. floating type valve seat heating power butterfly valve according to claim 2, is characterized in that: the sealing sphere hard chromium plating of described butterfly plate, and corresponding valve base sealing sphere built-up welding STL stellite, both coordinate the sealing pair that forms metal to metal.
4. according to the floating type valve seat heating power butterfly valve one of claims 1 to 3 Suo Shu, it is characterized in that: described valve seat is comprised of base ring and integrated seat cylinder, spring socket sleeve is on seat cylinder and press in base ring, the supporting surface that base ring contacts with spring seat is inclined-plane, this inclined-plane is 12 °-18 ° with the sagittal plane angle in seat cylinder week, the indentation, there that seat cylinder extends to valve body flange vertically forms dustproof shirt rim, described double-piston effect valve seat is placed in the enclosed space of valve seat and valve body composition, to prevent impurity in pipeline etc. from entering into above-mentioned space, affect that double-piston effect valve seat is normal to be used or reduction of service life.
5. according to the floating type valve seat heating power butterfly valve one of claims 1 to 3 Suo Shu, it is characterized in that: described spring seat periphery wall and inner circle wall are provided with circular groove and are furnished with o shape circle and contact with valve body and valve base sealing respectively.
6. floating type valve seat heating power butterfly valve according to claim 1 and 2, is characterized in that: described valve rod is provided with the PTFE seal ring that elastic element loads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320385872.5U CN203488731U (en) | 2013-07-01 | 2013-07-01 | Floating-type valve-seat thermal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320385872.5U CN203488731U (en) | 2013-07-01 | 2013-07-01 | Floating-type valve-seat thermal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488731U true CN203488731U (en) | 2014-03-19 |
Family
ID=50259566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320385872.5U Withdrawn - After Issue CN203488731U (en) | 2013-07-01 | 2013-07-01 | Floating-type valve-seat thermal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203488731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322212A (en) * | 2013-07-01 | 2013-09-25 | 厦门德尔斯威流体控制有限公司 | Floating type valve seat thermal butterfly valve |
-
2013
- 2013-07-01 CN CN201320385872.5U patent/CN203488731U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322212A (en) * | 2013-07-01 | 2013-09-25 | 厦门德尔斯威流体控制有限公司 | Floating type valve seat thermal butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DESW (XIAMEN) FLUID CONTROL EQUIPMENT CO., LTD. Free format text: FORMER NAME: XIAMEN DESW FLUID CONTROL CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 361101 604A room, strong building, industrial zone, torch hi tech Zone (Xiangan), Xiamen, Fujian Patentee after: Del Swee (Xiamen) fluid control equipment Co., Ltd. Address before: Unit A No. 2 layer seventeenth Siming Lake Road 361000 Xiamen City, Fujian Province Patentee before: Xiamen DESW Fluid Control Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140319 Effective date of abandoning: 20151014 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140319 Effective date of abandoning: 20151014 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |