CN205350415U - High temperature eccentric half -ball valve - Google Patents

High temperature eccentric half -ball valve Download PDF

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Publication number
CN205350415U
CN205350415U CN201620035585.5U CN201620035585U CN205350415U CN 205350415 U CN205350415 U CN 205350415U CN 201620035585 U CN201620035585 U CN 201620035585U CN 205350415 U CN205350415 U CN 205350415U
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CN
China
Prior art keywords
valve
high temperature
valve rod
extending portion
eccentric half
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Active
Application number
CN201620035585.5U
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Chinese (zh)
Inventor
陈继江
于婷婷
胡军荣
任敏峰
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Beijing Valve General Factory Co Ltd
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Beijing Valve General Factory Co Ltd
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Priority to CN201620035585.5U priority Critical patent/CN205350415U/en
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Publication of CN205350415U publication Critical patent/CN205350415U/en
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Abstract

The utility model provides a high temperature eccentric half -ball valve, including pivot, hemispheroid, disk seat, the valve body that has the cavity, valve gap, valve rod, well valve rod, bellows, bellows guard shield, upper valve shaft and pneumatic actuator, pivot, valve body, valve gap and bellows guard shield are from the fixed connection in proper order that makes progress down, the lower extreme and the pivot rigid coupling of hemispheroid, upper end and valve rod rigid coupling, disk seat and the cooperation of half ball sealing, an integrated into one piece is stretched by shaft extension portion and hole to well valve rod, and the hole portion of stretching links to each other with the upper end of valve rod, and the upper end of shaft extension portion links to each other with upper valve shaft, bellows jecket adorns in the outside of shaft extension portion, upper valve shaft 's upper end links to each other with the pneumatic executive structure. The utility model discloses in, the hemispheroid cooperates with valve -cover seal through packing with valve seat seal cooperation, valve rod, well valve rod passes through bellows and the sealed cooperation of upper valve shaft to constituted go up in, triple seal structure down, simple structure is reasonable, multiple seal structure guarantees medium zero and reveals.

Description

High temperature eccentric half-ball valve
Technical field
This utility model relates to mechanical engineering valve technology field, is specifically related to a kind of high temperature eccentric half-ball valve.
Background technology
Valve is the device controlling the direction of fluid, pressure and flow in fluid system, makes the medium in pipe arrangement and equipment (such as liquid, gas, powder) flowing or stops and controlling its flow.Pipeline fluid induction system utilize valve to change path section and media flow direction, can be used for controlling the flowing of all kinds fluids such as water, steam, oil product, gas, mud, various Korrosionsmedium, liquid metal and radioactive fluid, there is the functions such as water conservancy diversion, cut-off, throttling, non-return, shunting or overflow release.
For the valve that fluid controls, various valves used from simplest stop valve to extremely complex robot control system(RCS), its kind and specification are various, the inside nominal diameter of valve reaches greatly the industrial pipeline valve of 10m from atomic little gauge valve to latus rectum, the operating pressure of valve can supertension from 0.0013MPa to 1000MPa, operating temperature is from the ultralow temperature of-270 DEG C to the high temperature of 1430 DEG C.The control of valve can adopt the multiple kind of drive, as manually, electrically, surge, pneumatic, turbine, electromagnetic driven, electromagnetism surge, electro-hydraulic dynamic, air-or liquid-operated, spur gear, bevel gear driving etc..Can under the effect of pressure, temperature or other form transducing signal, by predetermined requirement action, or it is independent of transducing signal and is simply turned on and off, valve relies on driving or automechanism makes opening and closing element lift, sliding, swing or gyration, thus the size changing its flow area controls function to realize it.
Along with developing rapidly of the industries such as modernization big machinery, oil, chemical industry, new forms of energy, nuclear industry, the sealing reliability of valve is required more and more higher, the eccentric half-ball valve used in photo-thermal power generation industry at present, because the media such as fused salt easily make sealing surface crystallization, causing the phenomenons such as ball valve is stuck, valve rod twists off, result of use is very undesirable, and the temperature of fused salt is up to 600 DEG C, it is noxious substance, the sealing reliability of valve is required height.
Utility model content
The technical problems to be solved in the utility model is to provide the high temperature eccentric half-ball valve of a kind of rational in infrastructure, good seal performance.
For solving above-mentioned technical problem, embodiment of the present utility model provides a kind of high temperature eccentric half-ball valve, including pivot, hemisphere, valve seat, having the valve body of cavity, valve gap, valve rod, middle valve rod, corrugated tube, bellows shield, upper valve shaft and pneumatic actuator, described valve body, valve gap and bellows shield are bottom-up to be fixedly connected sequentially;
Described pivot is fixedly arranged on the bottom of valve body, and its upper end protrudes from cavity;
Described valve rod runs through valve gap, and its lower end protrudes from cavity;
Described hemispheroidal lower end is affixed with pivot, and upper end is affixed with valve rod;
Described valve seat is located in cavity, hemispheroidal side, seals with hemisphere and coordinates;
Described middle valve rod is one-body molded by axle extending portion and hole extending portion, and the axis opposed vertical line of described axle extending portion tilts, and the axis of hole extending portion is vertically;
Described hole extending portion is connected with the upper end of valve rod, and the upper end of axle extending portion is connected with upper valve shaft;
Described bellows-sheathed is loaded on the outside of axle extending portion;
Described corrugated tube and upper valve shaft are all located in bellows shield, and the upper end of upper valve shaft stretch out bellows shield after be connected with pneumatic execution structure.
Preferably, hemispheroidal centrage and valve flowing channel centrage one eccentric throw of deviation.Valve gap is the valve gap lengthened, to prevent high temperature injury pneumatic actuator.
In said structure, the axis of the axis relative opening extending portion of the axle extending portion of middle valve rod tilts, for eccentric rotary structure, when valve opening or closedown, can by eccentric effect, make the sealing surface of valve seat and hemispheroidal sphere not produce the friction of being directly connected to property, improve the service life of valve, it is prevented that valve is opened but to close or close under high temperature action and but can not be opened situation.During keying, hemispheroidal sphere departs from valve seat, and without any contact, moment of torsion is little, rotates flexibly.Middle valve rod adopts exclusive eccentric rotary corrugated tube sealing structure, and in valve opening process, corrugated tube does not twist and stretches, and does not have fatigue damage, corrugated tube long service life, and valve contour structures is little.
Wherein, filling out and be provided with filler between described valve rod and valve gap, the top pressure of described filler is provided with gland.
Preferably, described valve gap is fixedly connected with the valve body by stud, nut and butterfly spring, and the sealing junction of valve gap and valve body is provided with the second metal lip type sealing ring.By said structure, stud, nut can produce creep under 600 DEG C of high temperature, very easily cause valve body and valve gap to connect lax, and the seal pressure between valve gap and valve body reduces, and produces leakage, and butterfly spring is flexible, it is possible to play the effect of compensating well for.
Wherein, the first axle sleeve it is provided with between described pivot and hemisphere.
Wherein, sealing cooperation place of described hemisphere and valve seat is provided with the first metal lip type sealing ring.
Wherein, the lower surface place of described valve gap is embedded with thrust washer, and described valve rod is provided with thrust step accordingly.
Wherein, it is provided with the second axle sleeve between bottom and the valve gap of described valve rod.
Further, the upper end of described axle extending portion is connected with upper valve shaft by bearing.
Further, described upper valve shaft is one-body molded by the above under type in axle portion and flange part, the outer cylinder of described flange part and and bellows shield between be provided with the 3rd axle sleeve, be provided with flat pad between upper surface and the bellows shield of described flange part.
Wherein, described bellows shield is connected by screw and valve gap are fixing, and the sealing junction of the two is provided with pad.
Having the beneficial effect that of technique scheme of the present utility model:
In such scheme, hemisphere coordinates with valve base sealing, valve rod is coordinated with valve bonnet seal by filler, middle valve rod is coordinated with the sealing of upper valve shaft by corrugated tube, thus constituting upper, middle and lower triple seal structure, simple and reasonable, multi-sealing structure ensures that medium zero is revealed.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment one;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 1.
Description of reference numerals:
1, pivot;
2, the first axle sleeve;
3, hemisphere;
4, the first metal lip type sealing ring;
5, valve seat;
6, thrust washer;
7, the second axle sleeve;
8, valve body;
9, valve gap;
10, filler;
11, gland;
12, screw;
13, valve rod;
14, pad;
15, corrugated tube;
16, middle valve rod;
17, bearing;
18, the 3rd axle sleeve;
19, flat pad;
20, bellows shield;
21, upper valve shaft;
22, pneumatic execution structure;
23, stud;
24, nut;
25, butterfly spring;
26, the second metal lip type sealing ring.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The problem that this utility model easily leaks outside for existing poor sealing performance, medium, it is provided that a kind of reasonable in design, good seal performance high temperature eccentric half-ball valve.
As shown in Figure 1, embodiment of the present utility model provides a kind of high temperature eccentric half-ball valve, including pivot 1, hemisphere 3, valve seat 5, there is the valve body 8 of cavity, valve gap 9, valve rod 13, middle valve rod 16, corrugated tube 15, bellows shield 20, upper valve shaft 21 and pneumatic actuator 22, described valve body 8, valve gap 9 and bellows shield 20 is bottom-up is fixedly connected sequentially.
In the present embodiment, as in figure 2 it is shown, described valve gap 9 is connected by stud 23, nut 24 and butterfly spring 25 are fixing with valve body 8, and the sealing junction of valve gap 9 and valve body 8 is provided with the second metal lip type sealing ring 26, as shown in Figure 3.Described bellows shield 20 is connected by screw 12 is fixing with valve gap 9, and the sealing junction of the two is provided with pad 14.
Described pivot 1 is welded in the bottom of valve body 8, and its upper end protrudes from cavity.
Described valve rod 13 runs through valve gap 9, and its lower end protrudes from cavity.It is provided with the second axle sleeve 7 between bottom and the valve gap 9 of described valve rod 13.
The lower end of described hemisphere 3 is affixed with pivot 1 by the first axle sleeve 2, and upper end is affixed with valve rod 13.
Described valve seat 5 is located in cavity, the side of hemisphere 3, seals with hemisphere 3 and coordinates, and sealing cooperation place is provided with the first metal lip type sealing ring 4.
Described middle valve rod 16 is one-body molded by axle extending portion and hole extending portion, and the axis opposed vertical line of described axle extending portion tilts, and the axis of hole extending portion is vertically.
Described hole extending portion is connected with the upper end of valve rod 13, and the upper end of axle extending portion is connected with upper valve shaft 21 by bearing 17.
Described corrugated tube 15 is set in the outside of axle extending portion.
Described corrugated tube 15 and upper valve shaft 21 are all located in bellows shield 20, and the upper end of upper valve shaft 21 stretch out bellows shield 20 after be connected with pneumatic execution structure 22.
Filling out between described valve rod 13 and valve gap 9 and be provided with filler 10, the top pressure of filler 10 is provided with gland 11.
The lower surface place of described valve gap 9 is embedded with thrust washer 6, and described valve rod 13 is provided with thrust step accordingly.
Described upper valve shaft 21 is one-body molded by the above under type in axle portion and flange part, the outer cylinder of described flange part and and bellows shield 20 between be provided with the 3rd axle sleeve 18, be provided with flat pad 19 between upper surface and the bellows shield 20 of described flange part.
In this utility model, hemisphere coordinates with valve base sealing, valve rod is coordinated with valve bonnet seal by filler, middle valve rod is coordinated with the sealing of upper valve shaft by corrugated tube, thus constituting upper, middle and lower triple seal structure, simple and reasonable, multi-sealing structure ensures that medium zero is revealed.
The above is preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from principle described in the utility model; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. a high temperature eccentric half-ball valve, it is characterized in that, including pivot, hemisphere, valve seat, having the valve body of cavity, valve gap, valve rod, middle valve rod, corrugated tube, bellows shield, upper valve shaft and pneumatic actuator, described valve body, valve gap and bellows shield are bottom-up to be fixedly connected sequentially;
Described pivot is fixedly arranged on the bottom of valve body, and its upper end protrudes from cavity;
Described valve rod runs through valve gap, and its lower end protrudes from cavity;
Described hemispheroidal lower end is affixed with pivot, and upper end is affixed with valve rod;
Described valve seat is located in cavity, hemispheroidal side, seals with hemisphere and coordinates;
Described middle valve rod is one-body molded by axle extending portion and hole extending portion, and the axis opposed vertical line of described axle extending portion tilts, and the axis of hole extending portion is vertically;
Described hole extending portion is connected with the upper end of valve rod, and the upper end of axle extending portion is connected with upper valve shaft;
Described bellows-sheathed is loaded on the outside of axle extending portion;
Described corrugated tube and upper valve shaft are all located in bellows shield, and the upper end of upper valve shaft stretch out bellows shield after be connected with pneumatic execution structure.
2. high temperature eccentric half-ball valve according to claim 1, it is characterised in that fill out between described valve rod and valve gap and be provided with filler, the top pressure of described filler is provided with gland.
3. high temperature eccentric half-ball valve according to claim 1, it is characterised in that described valve gap is fixedly connected with the valve body by stud, nut and butterfly spring, and the sealing junction of valve gap and valve body is provided with the second metal lip type sealing ring.
4. high temperature eccentric half-ball valve according to claim 1, it is characterised in that be provided with the first axle sleeve between described pivot and hemisphere.
5. high temperature eccentric half-ball valve according to claim 1, it is characterised in that sealing cooperation place of described hemisphere and valve seat is provided with the first metal lip type sealing ring.
6. high temperature eccentric half-ball valve according to claim 1, it is characterised in that the lower surface place of described valve gap is embedded with thrust washer, described valve rod is provided with thrust step accordingly.
7. high temperature eccentric half-ball valve according to claim 1, it is characterised in that be provided with the second axle sleeve between bottom and the valve gap of described valve rod.
8. high temperature eccentric half-ball valve according to claim 1, it is characterised in that the upper end of described axle extending portion is connected with upper valve shaft by bearing.
9. high temperature eccentric half-ball valve according to claim 1, it is characterized in that, described upper valve shaft is one-body molded by the above under type in axle portion and flange part, it is provided with the 3rd axle sleeve between outer cylinder and the bellows shield of described flange part, between upper surface and the bellows shield of described flange part, is provided with flat pad.
10. high temperature eccentric half-ball valve according to claim 1, it is characterised in that described bellows shield is connected by screw and valve gap are fixing, and the sealing junction of the two is provided with pad.
CN201620035585.5U 2016-01-14 2016-01-14 High temperature eccentric half -ball valve Active CN205350415U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620035585.5U CN205350415U (en) 2016-01-14 2016-01-14 High temperature eccentric half -ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620035585.5U CN205350415U (en) 2016-01-14 2016-01-14 High temperature eccentric half -ball valve

Publications (1)

Publication Number Publication Date
CN205350415U true CN205350415U (en) 2016-06-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620035585.5U Active CN205350415U (en) 2016-01-14 2016-01-14 High temperature eccentric half -ball valve

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105546128A (en) * 2016-01-14 2016-05-04 北京市阀门总厂股份有限公司 High-temperature butterfly valve for molten salt used for solar thermal electric power generation
CN110440020A (en) * 2019-07-30 2019-11-12 于霁晗 A kind of liquid metal regulating valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105546128A (en) * 2016-01-14 2016-05-04 北京市阀门总厂股份有限公司 High-temperature butterfly valve for molten salt used for solar thermal electric power generation
CN110440020A (en) * 2019-07-30 2019-11-12 于霁晗 A kind of liquid metal regulating valve

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