CN101498374A - Completely balanced rotating regulation valve - Google Patents
Completely balanced rotating regulation valve Download PDFInfo
- Publication number
- CN101498374A CN101498374A CNA2008101211729A CN200810121172A CN101498374A CN 101498374 A CN101498374 A CN 101498374A CN A2008101211729 A CNA2008101211729 A CN A2008101211729A CN 200810121172 A CN200810121172 A CN 200810121172A CN 101498374 A CN101498374 A CN 101498374A
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- sleeve
- valve
- spool
- guide pin
- pin bushing
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- 239000012530 fluid Substances 0.000 abstract description 8
- 230000004044 response Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract 2
- 230000007774 longterm Effects 0.000 abstract 1
- 230000003628 erosive effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention discloses a fully balanced rotary control valve, comprising a sleeve and a rotary valve core in the valve body, a valve cover connected to the top of the valve body. The lower end of the rotary valve core is provided with a hollow sleeve with a valve core cavity;; upper and lower obturating rings of the valve core are respectively arranged in the external circular groove of the hollow sleeve, inlet and outlet throttle windows of the valve core are arranged on a hole wall, and an actuator is connected to the top of the valve core extending from the upper end of the rotary valve core, the sleeve is embedded in the inner hole of the valve body and used as a hollow sleeve with a through hole on one end, the inner hole of the sleeve and the excircle of the lower end of the rotary valve core are in clearance fit, inlet and outlet throttle windows of the sleeve corresponding to the rotary valve core are arranged on the hole wall of the sleeve, and a sealing element is arranged in an annular groove between the sleeve and valve body. Compared with the prior art, the invention has the characteristics of high-pressure difference resistance, fully balanced internal pressure, sensitive adjusting response, long-term fill sealing and low cost, and is suitable for adjusting the parameters, such as flow, pressure and the like of fluid.
Description
Technical field
The present invention relates to a kind of modulating valve, what be specifically related to is a kind of completely balanced rotating regulation valve.
Background technique
Modulating valve is that parameter such as the flow, pressure, temperature of automation field convection cell is used wider product when controlling.At present domestic and international existing application is in common multistage modulating valve of mainly containing of high pressure and High Pressure Difference operating mode and the multistage modulating valve of balanced type, the anti-cavitation erosion of the modulating valve of these straight journey classes, also ability High Pressure Difference, but the thrust or the moment that drive valve core movement are all bigger, corresponding actuator's volume of joining is big, cost is high, and the time that the total travel of straight journey opens and closes is long, and governing response is insensitive, is embodied in:
(1) spool of common multistage modulating valve in the position of the stroke that mediates particularly the time near the complete shut-down position, because the High Pressure Difference before and after the valve almost all acts on the spool, very big thrust of corresponding generation is ordered about spool and is outwards moved on spool.For example, China utility model patent ZL98236914.X, June 16 1999 notice of authorization day, name is called the valve core structure that the septum valve spool discloses a kind of modulating valve, referring to Fig. 7, when fluid pressure action is on valve rod 701, can produce a thrust F who makes progress, actuator then need produce bigger thrust and drive the travel position that spool moves to appointment on opposite direction, the actuator's volume heaviness and the power of institute's type selecting are bigger like this, waste energy.Even flatten the multistage modulating valve of weighing apparatus structure in design has, do not eliminate fully on the spool that existence owing to valve front and back pressure reduction produces yet influence of unbalance power, also exist the phenomenon that wastes energy, be unfavorable for energy-conserving and environment-protective.
(2) the straight journey modulating valve is because spool is made straight line motion repeatedly, and filler weares and teares easily, and the filler place just had seepage after valve used one not long period, so that seepage is increasing until inefficacy.
(3) common rotating regulation valve such as V-arrangement ball valve, butterfly valve, though switch is rapid, can not be high pressure resistant poor, can not satisfy industrial to performance demands such as high pressure resistant poor, the governing response sensitivities of modulating valve.
Summary of the invention
At the problem and shortage that prior art exists, purpose of the present invention aims to provide a kind of high pressure resistant poor, internal pressure complete equilibrium, governing response sensitivity, filler seals for a long time and completely balanced rotating regulation valve cheaply.
The objective of the invention is to be achieved through the following technical solutions: completely balanced rotating regulation valve comprises sleeve, rotary spool that is positioned at valve body and the valve gap that is connected in the valve body top, the lower end that it is characterized in that described rotary spool is one to contain the hollow sleeve of valve core cavity, be respectively arranged with seal ring and spool lower seal on the spool in the annular groove outside of its hollow sleeve, hole wall is provided with spool inlet throttle window and spool outlet throttling window, and the upper end of rotary spool is stretched out the top of valve gap and is connected with actuator; Described sleeve is flush-mounted in the internal holes of valve body, sleeve is the hollow sleeve that an end has through hole, the cylindrical of the endoporus of sleeve and rotary spool lower end be the gap movingly, the hole wall of sleeve is provided with corresponding to the sleeve inlet throttle window of rotary spool and sleeve outlet throttling window, in the circular groove between sleeve and the valve body seal element is housed; Be provided with guide pin bushing between described sleeve and the valve gap, guide pin bushing closely is pressed on the upper-end surface of sleeve by valve gap, the upper end cylindrical of the endoporus of guide pin bushing and rotary spool be the gap movingly, the cylindrical of guide pin bushing forms stationary fit with the endoporus of valve body and valve gap respectively, is respectively arranged with guide pin bushing inner seal ring and guide pin bushing exterior seal ring on the inside and outside circle groove of guide pin bushing.
The described driving mechanism that is arranged at the spool upper end is an electric actuator;
The described driving mechanism that is arranged at the spool upper end is a pneumatic actuator;
The described driving mechanism that is arranged at the spool upper end is a manual actuator.
Compared with prior art, the invention has the beneficial effects as follows:
(1) owing to adopted rotary spool and sleeve design, be respectively arranged with seal ring and spool lower seal on the spool in the annular groove outside of the lower end hollow sleeve of rotary spool, the thrust that the fluid pressure action of valve internal makes progress at spool is equal fully with downward thrust, but direction is opposite, thereby cancel each other, thereby eliminated common regulating valve and acted on influence of unbalance power on the spool because of front and back pressure reduction, actuator does not need to produce extra power yet and overcomes equilibrant on the spool when driving valve, the frictional force that only need overcome on the rotary spool is just passable, then the type selecting of actuator can correspondingly reduce, and has also alleviated complete machine weight simultaneously and has reduced cost.
(2) owing to be provided with inlet throttle district and outlet throttling district two-stage choke zone, shared by the High Pressure Difference before and after the valve, reduced the possibility of liquid medium cavitation cavitation erosion, also be split in two choke zone even produce the cavitation erosion effect, therefore the present invention can be high pressure resistant poor, and also prolonged the working life of choke zone.
(3) just can realize owing to valve only needs the rotary driving spool to finish 90 degree revolutions from the standard-sized sheet to the complete shut-down, so the present invention can accomplish that switch is rapid, the governing response sensitivity.
(4) because valve gap, spool, sleeve and guide pin bushing are to be fitted directly into valve body from the valve body top, therefore inner body of the present invention can onlinely be changed, and will whole valve body not separate replacing together from pipeline, more because the position of valve gap top connection actuator is the structure that meets international standard, be convenient to various actuators such as adapted is electronic, pneumatic, manual, therefore maintain fast and conveniently, reduce cost.
Description of drawings:
Fig. 1 is the structural representation of one embodiment of the present of invention, and it comprises electric actuator;
Fig. 2 be structure shown in Figure 1 when valve wide open, the sectional view of A-A place and B-B place rotary spool and sleeve;
Fig. 3 for the present invention when valve portion divide to be opened, the sectional view of A-A place and B-B place rotary spool and sleeve;
Fig. 4 for the present invention when valve complete shut-down state, the sectional view of A-A place and B-B place rotary spool and sleeve;
Fig. 5 is the profile schematic representation of an alternative embodiment of the invention, and it comprises pneumatic actuator;
Fig. 6 is another an embodiment's of the present invention profile schematic representation, and it comprises manual actuator;
Fig. 7 is a kind of valve core structure of modulating valve.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
Fig. 1 is the structural representation of one embodiment of the present of invention, completely balanced rotating regulation valve comprises sleeve 2, rotary spool 4 that is positioned at valve body 1 and the valve gap 10 that is connected in valve body 1 top, the lower end that it is characterized in that described rotary spool 4 is one to contain the hollow sleeve of valve core cavity 103, be respectively arranged with seal ring 6 on spool lower seal 3 and the spool in the annular groove outside of its hollow sleeve, hole wall is provided with spool inlet throttle window 101 and spool outlet throttling window 102, and the upper end of rotary spool 4 is stretched out the top of valve gap 10 and is connected with electric actuator 90; Described sleeve 2 is flush-mounted in the internal holes of valve body 1, sleeve 2 is the hollow sleeve that an end has through hole, the cylindrical of the endoporus of sleeve 2 and rotary spool 4 lower ends be the gap movingly, the hole wall of sleeve 2 is provided with corresponding to the sleeve inlet throttle window 201 of rotary spool 4 and sleeve outlet throttling window 202, in the circular groove between sleeve 2 and the valve body 1 seal element 5 is housed; Be provided with guide pin bushing 7 between described sleeve 2 and the valve gap 10, guide pin bushing 7 closely is pressed on the upper-end surface of sleeve 2 by valve gap 10, the upper end cylindrical of the endoporus of guide pin bushing 7 and rotary spool 4 be the gap movingly, the cylindrical of guide pin bushing 7 is stationary fit with the endoporus of valve body 1 and valve gap 10 respectively, is respectively arranged with guide pin bushing inner seal ring 8 and guide pin bushing exterior seal ring 9 on the inside and outside circle groove of guide pin bushing 7.Embodiment shown in Figure 1 is applicable to the occasion that power supply is used as power.
Referring to Fig. 1 and Fig. 2, this moment, completely balanced rotating regulation valve was in fully open position.When needs reduce fluid flow, electric actuator 90 rotary driving spools 4 are to the travel position of closing direction clockwise rotation to appointment, state as shown in Figure 3, the interior fluid of upstream line this moment flows into through valve body import 001, successively through sleeve inlet throttle window 201, spool inlet throttle window 101, valve core cavity 103, spool outlet throttling window 102, sleeve outlet throttling window 202, after valve outlet 002 flows into downstream line, by throttling, flow is adjusted to desired value to fluid at inlet throttle window and outlet throttling window two places.When electric actuator 90 continues 4 motions of rotary driving spools, valve reaches the complete shut-down position, state as shown in Figure 4, rotary spool 4 cuts off fluids and flows.When needs increased fluid flow, when electric actuator 90 rotary driving spools 4 reached a certain position to the counter clockwise direction rotation, flow was adjusted to desired value.The present invention has just realized the adjusting control of flow like this.As can be seen from Figure 1, owing to be respectively arranged with seal ring 6 on spool lower seal 3 and the spool on the existence of valve internal hydrodynamic pressure and the rotary spool 4, the thrust FB equal and opposite in direction that acts on the downward thrust FA of rotary spool 4 and make progress, direction is opposite, cancel each other, thereby the present invention has realized the full balance of active force on the spool.
Fig. 5 is the profile schematic representation of an alternative embodiment of the invention, and it comprises pneumatic actuator, and the top of valve gap 10 is connected with pneumatic actuator 91, and this structure is applicable to the occasion that source of the gas is used as power.
Fig. 6 is another an embodiment's of the present invention profile schematic representation, and it comprises manual actuator, and the top of valve gap 10 is connected with manual actuator 92.This structure is applicable to manual operation, and is simple in structure.
Claims (2)
1. a completely balanced rotating regulation valve comprises sleeve, rotary spool that is positioned at valve body and the valve gap that is connected in the valve body top, it is characterized in that:
The lower end of described rotary spool is one to contain the hollow sleeve of valve core cavity, be respectively arranged with seal ring and spool lower seal on the spool in the annular groove outside of its hollow sleeve, hole wall is provided with spool inlet throttle window and spool outlet throttling window, and the upper end of rotary spool is stretched out the top of valve gap and is connected with actuator; Described sleeve is flush-mounted in the internal holes of valve body, sleeve is the hollow sleeve that an end has through hole, the cylindrical of the endoporus of sleeve and rotary spool lower end be the gap movingly, the hole wall of sleeve is provided with corresponding to the sleeve inlet throttle window of rotary spool and sleeve outlet throttling window, in the circular groove between sleeve and the valve body seal element is housed.
2. completely balanced rotating regulation valve according to claim 1, it is characterized in that: be provided with guide pin bushing between described sleeve and the valve gap, guide pin bushing closely is pressed on the upper-end surface of sleeve by valve gap, the upper end cylindrical of the endoporus of guide pin bushing and rotary spool be the gap movingly, the cylindrical of guide pin bushing is stationary fit with the endoporus of valve body and valve gap respectively, is respectively arranged with guide pin bushing inner seal ring and guide pin bushing exterior seal ring on the inside and outside circle groove of guide pin bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101211729A CN101498374A (en) | 2008-10-07 | 2008-10-07 | Completely balanced rotating regulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101211729A CN101498374A (en) | 2008-10-07 | 2008-10-07 | Completely balanced rotating regulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101498374A true CN101498374A (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101211729A Pending CN101498374A (en) | 2008-10-07 | 2008-10-07 | Completely balanced rotating regulation valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806779A (en) * | 2015-04-14 | 2015-07-29 | 路达(厦门)工业有限公司 | Liquid valve assembly and sealing sleeve for liquid valve assembly |
| CN113790276A (en) * | 2021-08-24 | 2021-12-14 | 中国铁路设计集团有限公司 | Fire prevention excess pressure integrative valve of adjustable static pressure |
| CN114857331A (en) * | 2022-06-02 | 2022-08-05 | 西安航天动力研究所 | Electric stepless flow regulating valve |
| CN115059779A (en) * | 2022-02-22 | 2022-09-16 | 山东大学 | A high-pressure or ultra-high-pressure switching valve whose pressure rises step by step and self-balances |
| CN116906597A (en) * | 2023-07-17 | 2023-10-20 | 云和县金立铸件有限公司 | Bidirectional metal-pressing sealing butterfly valve and use method thereof |
| CN119867606A (en) * | 2025-03-07 | 2025-04-25 | 追觅创新科技(苏州)有限公司 | Cleaning base station and cleaning system |
-
2008
- 2008-10-07 CN CNA2008101211729A patent/CN101498374A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806779A (en) * | 2015-04-14 | 2015-07-29 | 路达(厦门)工业有限公司 | Liquid valve assembly and sealing sleeve for liquid valve assembly |
| CN113790276A (en) * | 2021-08-24 | 2021-12-14 | 中国铁路设计集团有限公司 | Fire prevention excess pressure integrative valve of adjustable static pressure |
| CN115059779A (en) * | 2022-02-22 | 2022-09-16 | 山东大学 | A high-pressure or ultra-high-pressure switching valve whose pressure rises step by step and self-balances |
| CN115059779B (en) * | 2022-02-22 | 2024-08-20 | 山东大学 | Pressure step-by-step lifting self-balancing high-pressure or ultrahigh-pressure switching valve |
| CN114857331A (en) * | 2022-06-02 | 2022-08-05 | 西安航天动力研究所 | Electric stepless flow regulating valve |
| CN116906597A (en) * | 2023-07-17 | 2023-10-20 | 云和县金立铸件有限公司 | Bidirectional metal-pressing sealing butterfly valve and use method thereof |
| CN119867606A (en) * | 2025-03-07 | 2025-04-25 | 追觅创新科技(苏州)有限公司 | Cleaning base station and cleaning system |
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Open date: 20090805 |