CN203614769U - Regulating valve capable of rotating eccentrically - Google Patents
Regulating valve capable of rotating eccentrically Download PDFInfo
- Publication number
- CN203614769U CN203614769U CN201320800190.6U CN201320800190U CN203614769U CN 203614769 U CN203614769 U CN 203614769U CN 201320800190 U CN201320800190 U CN 201320800190U CN 203614769 U CN203614769 U CN 203614769U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- spool
- eccentric rotary
- modulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001105 regulatory effect Effects 0.000 title abstract description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 7
- 238000007701 flash-distillation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000012369 In process control Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Abstract
The utility model provides a regulating valve capable of rotating eccentrically. The regulating valve capable of rotating eccentrically comprises a valve body and further comprises a hemispherical valve element and a valve seat. The valve element is connected to a valve rod eccentrically through a flexible arm. The valve seat is arranged in the valve body and matched with the valve element. The valve element rotates eccentrically along with the valve rod, so that the blocked area of the valve seat is changed. By the implementation of the technical scheme, the regulating valve capable of rotating eccentrically has the advantages that a buffering structure formed by an annular step arranged on the valve seat enables the pressure of a medium to be buffered when the medium passes through the gap between the valve seat and the valve element, as a result, the possibility of a flash phenomenon is lowered, and the possibility of cavitation is further lowered.
Description
Technical field
The utility model relates to pipe fittings, relates in particular to a kind of modulating valve of eccentric rotary.
Background technique
In process control system, modulating valve is direct and control fluid contact, carrys out flowing of control media by changing the area of valve inner gateway, is a throttle element that local resistance can change.In the time that fluid flows through modulating valve, due to the circulation area subcontract that spool and valve seat cause, form partial groups power, it changes the pressure of fluid and speed, produce power loss when fluid flows through modulating valve.
Known according to the law of conservation of energy of fluid, nigh due to throttling action at spool, valve seat place
Downstream part produces a contracted flow, and its flow velocity sharply increases suddenly, and static pressure declines suddenly, when the pressure at contracted flow place reach or during lower than saturation vapour pressure in this fluid place situation partially liq be just vaporized into gas, thereby form flash distillation.While producing flash distillation, the sudden strain of a muscle internals materials such as spool are started to have erosion damage effect.If the pressure at contracted flow place is not to remain on below saturation vapour pressure after generation flash distillation, pressure hurried rising again after leaving throttling place, at this moment Bubble formation breaks and is converted into liquid state, and this process is cavitation.Cavitation corrosion, plane of denudation material when cavitation, thus solid boundaries destroyed.
Modulating valve is controlled when fluid regulating, and usually occurs two kinds of phenomenons of flash distillation and cavitation, thereby causes the destruction etc. of serious noise, vibration, material, directly affects the life-span of modulating valve.
Summary of the invention
The problems referred to above that exist for existing modulating valve, the main purpose of the technological scheme the utility model proposes is:
A kind of modulating valve of eccentric rotary of difficult generation steam flashing is provided.
To achieve these goals, the utility model has adopted following technological scheme:
A modulating valve for eccentric rotary, comprises valve body, wherein, also comprises:
Hemispheric spool, described spool is connected on valve rod by a soft arm bias;
Valve seat, what mate with described spool is arranged in described valve body;
Described spool, eccentric rotates with described valve rod, changes the area that blocks described valve seat.
On the other hand of the present utility model, described valve seat is provided with buffer structure towards the opening of described spool.
On the other hand of the present utility model, described buffer structure is ring-shaped step.
On the other hand of the present utility model, described valve seat is fixed in described valve body by a trim ring nut.
On the other hand of the present utility model, described ring-shaped step is arranged at the sealing surface place of described spool hemisphere face and described valve seat.
On the other hand of the present utility model, also comprise pneumatic actuator, the holding of described pneumatic actuator
Row end is connected with described valve rod and controls described valve rod and rotate.
By the enforcement to technical solutions of the utility model, can obtain following technique effect:
The buffer structure forming by the ring-shaped step that arranges on valve seat, making medium is that pressure is cushioned by valve seat and spool gap, thereby has reduced possibility that steam flashing occurs, and and then has reduced the possibility of cavitation generation.
Accompanying drawing explanation
Fig. 1 is the embodiment's of the modulating valve of eccentric rotary of the present utility model structural representation;
Fig. 2 is that Fig. 1 is in the partial enlarged drawing at M place.
Embodiment
By specific embodiment, the technical solution of the utility model is described below, with this practicality
Under the conflict free prerequisite of novel goal of the invention, the embodiment who hereinafter mentions can combine mutually.
As shown in Figure 1, the utility model provides a kind of modulating valve of eccentric rotary, comprises valve body 1, it is characterized in that, also comprises:
In a kind of embodiment of the present utility model, as shown in Figure 2, valve seat 4 is provided with buffer structure towards the opening of spool 3.The object that buffer structure is set be when spool 3 apertures hour, the pressure of buffering valve seat 4 and spool 3 gap locations, thus reduce the possibility that flash distillation occurs.
On the basis of technique scheme, in a kind of preferred embodiment, buffer structure can adopt ring-shaped step 6.By experiment, the valve seat 4 after improvement, due to many ring-shaped steps 6, medium is equivalent to through twice throttling, and the effect of pressure drop is more obvious before relatively improving; On numerical value, analyze, under the outlet pressure (100000Pa, i.e. 1bar) of same numerical value, the inlet pressure before improvement is 195200Pa(1.95bar), the inlet pressure after improvement is 229000Pa(2.29bar) thus the valve seat 4 after improving, step-down is more obvious.
In a kind of embodiment of the present utility model, valve seat 4 can be fixed in valve body 1 by a trim ring nut 5.
In a kind of embodiment of the present utility model, ring-shaped step 6 is arranged at the sealing surface place of spool 3 hemisphere faces and valve seat 4.
In a kind of embodiment of the present utility model, also comprise pneumatic actuator (not in shown in figure), the actuating station of pneumatic actuator is connected with valve rod 2 and controls valve rod and rotate.
The above embodiments are only that part of the present utility model embodies; can not contain of the present utility model whole; on the basis of above-described embodiment and accompanying drawing; those skilled in the art can obtain more mode of execution under the prerequisite of not paying creative work, and therefore these are not paid the mode of execution obtaining under the prerequisite of creative work and all should be included in protection domain of the present utility model.
Claims (6)
1. a modulating valve for eccentric rotary, comprises valve body, it is characterized in that, also comprises:
Hemispheric spool, described spool is connected on valve rod by a soft arm bias;
Valve seat, what mate with described spool is arranged in described valve body;
Described spool, eccentric rotates with described valve rod, changes the area that blocks described valve seat.
2. the modulating valve of eccentric rotary as claimed in claim 1, is characterized in that, described valve seat is provided with buffer structure towards the opening of described spool.
3. the modulating valve of eccentric rotary as claimed in claim 2, is characterized in that, described buffer structure is ring-shaped step.
4. the modulating valve of eccentric rotary as claimed in claim 1, is characterized in that, described valve seat is fixed in described valve body by a trim ring nut.
5. the modulating valve of eccentric rotary as claimed in claim 3, is characterized in that, described ring-shaped step is arranged at the sealing surface place of described spool hemisphere face and described valve seat.
6. as the modulating valve of eccentric rotary as described in arbitrary in claim 1-5, it is characterized in that, also comprise pneumatic actuator, the actuating station of described pneumatic actuator is connected with described valve rod and controls described valve rod and rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800190.6U CN203614769U (en) | 2013-12-06 | 2013-12-06 | Regulating valve capable of rotating eccentrically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800190.6U CN203614769U (en) | 2013-12-06 | 2013-12-06 | Regulating valve capable of rotating eccentrically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614769U true CN203614769U (en) | 2014-05-28 |
Family
ID=50767418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320800190.6U Expired - Lifetime CN203614769U (en) | 2013-12-06 | 2013-12-06 | Regulating valve capable of rotating eccentrically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614769U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017157134A1 (en) * | 2016-03-14 | 2017-09-21 | 安徽红星阀门有限公司 | Flat-bottomed ball valve |
| CN109595361A (en) * | 2019-01-23 | 2019-04-09 | 艾思瑞流体控制有限公司 | A kind of novel three-way revolves ceramic valve partially |
-
2013
- 2013-12-06 CN CN201320800190.6U patent/CN203614769U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017157134A1 (en) * | 2016-03-14 | 2017-09-21 | 安徽红星阀门有限公司 | Flat-bottomed ball valve |
| US10563777B2 (en) | 2016-03-14 | 2020-02-18 | Anhui Redstar Valve Co., Ltd | Flat bottom valve |
| CN109595361A (en) * | 2019-01-23 | 2019-04-09 | 艾思瑞流体控制有限公司 | A kind of novel three-way revolves ceramic valve partially |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201807 Shanghai Bao Qian Road, Lane 5888, Lane 8, No. Patentee after: SHANGHAI EHO VALVE CO.,LTD. Address before: 201807 Shanghai Bao Qian Road, Lane 5888, Lane 8, No. Patentee before: SHANGHAI EHO VALVE MANUFACTURE CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |