CN203488780U - Low-noise cage-type adjusting valve - Google Patents
Low-noise cage-type adjusting valve Download PDFInfo
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- CN203488780U CN203488780U CN201320581073.5U CN201320581073U CN203488780U CN 203488780 U CN203488780 U CN 203488780U CN 201320581073 U CN201320581073 U CN 201320581073U CN 203488780 U CN203488780 U CN 203488780U
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- cage
- modulating
- eddy current
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Abstract
The utility model relates to a low-noise cage-type adjusting valve which comprises a three-way valve body, a valve deck, a valve rod, a combined valve cage, a flow guiding element, a large-flow throttling element, a vortex separation protective element, a compressing part and a valve plug. A valve cavity, inflow channels and an outflow channel are formed in the valve body. The inflow channels and the outflow channel are communicated with the valve cavity. The flow guiding element and the combined valve cage are coaxially arranged in a sleeved mode and are in sealing fit with the opening end of the outflow channel. A groove is formed in the lower end of the large-flow throttling element, so that the large-flow throttling element is positioned at the upper end of the flow guiding element and the upper end of the combined valve cage. The vortex separation protective element is fixedly connected with the compressing part in a welding mode. A plurality of vibration reduction limiting devices are connected to the compressing part. One end of the valve rod penetrates through the valve deck to be in linkage with the valve plug. The outer edge of the flow guiding element, the outer edge of the large-flow throttling element and the outer edge of the compressing part are covered with the valve plug in a slidable mode. By means of the adjusting valve, fluid noise can be effectively reduced, turbulent flow collision can be relieved, and the through-flow capacity under the large-opening condition can be increased.
Description
Technical field
The utility model relates to a kind of for controlling the mobile control valve of fluid, particularly a kind of low noise cage type regulating valve for reducing flow loss and flow noise.
Background technique
At industrial fields such as nuclear energy power generation, large-size chemical process units, modulating valve is widely used in process control system, for regulating the process parameter such as rate-of flow, pressure of industrial automation process.According to the control signal in automatic system, the aperture of automatic regulating valve door, thus realize working medium flowing between valve inlet and outlet.In order to meet the required particular fluid flow characteristic of various operating modes, low noise valve often adopts and in the runner between valve outlet port and import, valve cage is set and carries out throttling.The valve cage hydrodynamic noise that both can decay also can reduce or eliminate cavitation.
The vibration noise problem of modulating valve belongs to fluid-dynamic noise problem, due to Complex Phenomena in Vertical Bell Jars such as ubiquity turbulent flow, separated flows in the valve pocket at valve, runner, the noise producing is to produce under the fluid interaction that there is no Oscillating boundary or other extra power, the noise control technique of modulating valve relates to a plurality of subjects such as Thermal Power Engineering, mechanical vibration, acoustics, and the operational noise design that can say low noise modulating valve is a very complicated problem.Under complex working conditions, by the valve plug aperture of regulating and controlling valve, accurately control the working medium flow that flows through valve pocket, although valve cage can reduce Working fluid flow noise by reducing flow velocity, under large aperture condition, easily cause larger flow loss.In the downstream of valve cage, due to the collision of the formed multiple jets of high-pressure working medium, can produce again new turbulence noise source.How balance and noise reduction with reduce flow loss, avoid the generation in new turbulence noise source, be the problem that the design of Novel low noise cage type regulating valve faces.
A kind of cage type regulating valve of the prior art has been shown in Fig. 1, it comprises valve body, spool 9, valve rod 1 and valve gap 3, in valve body, be provided with valve seat 10, valve gap 3 is provided with a gland 2, between gland and valve gap, be provided with balance spring 7, between gland and balance spring, be provided with stuffing box packing 5, the both sides up and down of stuffing box packing are respectively equipped with liner 4 and lower liner 6.In described valve body lumen, be provided with a porous valve cage 8, this modulating valve has been realized the decrease of noise functions of part by the hole of valve cage 8, but its decrease of noise functions is limited, can not effectively avoid turbulent flow.
For this reason, artificer of the present utility model is because above-mentioned defect, by concentrating on studies and designing, is comprehensively engaged in for a long time experience and the achievement of related industry for many years, and research and design goes out a kind of low noise cage type regulating valve, to overcome above-mentioned defect.
Summary of the invention
The purpose of this utility model is to provide a kind of can effectively reduce flow noise, alleviates turbulent flow collision, increases the low noise cage type regulating valve of through-current capability under large aperture condition.
For achieving the above object, the utility model discloses a kind of low noise cage type regulating valve, comprise three way valve, valve gap, valve rod, combination valve cage, diversion member, large flow throttle element, the separated protective element of eddy current, compressing member and valve plug, it is characterized in that:
In described valve body, be provided with valve pocket, flow channel and flow pass, flow channel and flow pass connect valve pocket, described diversion member is sealed and matched with combination valve cage coaxial package and with the opening end formation of flow pass, groove is offered in the lower end of described large flow throttle element, make it be positioned at diversion member and the upper end of combining valve cage, the separated protective element of described eddy current and compressing member are connected by welding, on compressing member, connect a plurality of vibration reduction and limiting devices, one end of described valve rod is through valve gap and valve plug interlock, described valve plug slidably covers on diversion member, large flow throttle element and compressing member outer rim, and when modulating valve is during in closed state, the seal face formation of valve plug and described flow channel is sealed and matched, form thus the partition of flow channel and flow pass.
Wherein: described valve pocket is quadratic curve shape, described diversion member, combination valve cage, large flow throttle valve element, the separated protective element of eddy current are arranged in the quadratic curve shape valve pocket in described three way valve.
Wherein: described vibration reduction and limiting device comprises guide rod, shock-absorbing spring and snubber, guide rod and compressing member are threaded connection, snubber and guide rod Spielpassung, and snubber contacts with valve gap and forms axial limiting.
Wherein: diversion member has columniform outer surface and internal surface, described internal surface limits the cage hole with axis, described outer surface has at least two above flow region openings that connect, and described opening and adjacent opening are separated, and described valve plug endwisely slips on described outer surface.
Wherein: the opening on described diversion member outer surface has chamfering on described outer surface.
Wherein: described combination valve cage adopts the single-stage throttling valve cage of multistage throttle mazy type valve cage or cage cellular type.
Wherein: between the internal surface of described diversion member and combination valve cage outer surface, a determining deviation is set.
Wherein: described large flow throttle element is positioned at diversion member and the upper end of combining valve cage, large flow throttle element has outer surface and internal surface, and a plurality of flow openings of extending between described internal surface and described outer surface.
Wherein: described flow openings has chamfering on described outer surface.
Wherein: described flow openings has enlarged area on described outer surface.
Wherein: described each flow openings sectional dimension is identical or different.
Wherein: the top that is arranged at large flow throttle element after the separated protective element of described eddy current and the welding of valve cage compressing member are connected; The separated protective element of described eddy current is horn-like rotary structure, the open end of lower end and flow pass is in same level, described rotary structure has outer surface and the internal surface that is certain curvature, at the internal surface near compressing member one end, limiting at least plural sectional shape is long-round-shape or circular through-flow region, described in each, extend between described internal surface and described outer surface in through-flow region, and bearing of trend is parallel with valve flow channel axis.
Wherein: described through-flow region has chamfering on described eddy current resolution element outer surface.
Wherein: described through-flow region has enlarged area on described eddy current resolution element outer surface.
Pass through said structure, the utility model is enclosed within mangetic core assembly outside valve plug by moving axially is realized the connection of modulating valve, the adjustment of partition and flow, mangetic core assembly is by valve cage, large flow restrictor, eddy current resolution element, compressing member and vibration damping limit element are arranged at the opening end of valve body flow pass from the bottom to top in turn, valve cage comprise the fluid director of coaxial package and mazy type valve cage two-layer, through-flow region on described fluid director is along the circumferential direction uniformly distributed, the opening in described through-flow region is traditionally arranged to be long-round-shape, quantity is determined by the concrete condition range of modulating valve, thereby address the deficiencies of the prior art, effectively reduce flow noise, alleviate turbulent flow collision, increase through-current capability under large aperture condition.
Wherein, large flow throttle element comprises the wall with outer surface and internal surface, and the groove by throttle element lower end is connected with described valve cage and realizes location.Described large flow restrictor internal surface limits at least two through-flow regions above with axis, and each connects region extends between described internal surface and described outer surface, and opening and the adjacent apertures in described through-flow region are separated.
Wherein, eddy current resolution element and compressing member are connected by welding, are arranged at the top of large flow throttle element.Eddy current resolution element is horn-like rotary structure, the open end of element lower end and flow pass is in same level, described rotary structure has and is the outer surface of certain curvature and the wall of internal surface, at the internal surface near compressing member one end, limiting at least plural sectional shape is long-round-shape or circular pass through openings circulating area, described in each, circulating area extends between described internal surface and described outer surface, and bearing of trend is parallel with valve flow channel axis.
Wherein, vibration damping limit element comprises: guide rod, spring, bounding means, and wherein said guide rod and compressing member are threaded connection, spring housing is contained on guide rod, bounding means is arranged on guide rod end, is Spielpassung with guide rod, by the setting of research vibration damping limit element, with three to six, is advisable.
Detailed content of the present utility model can obtain by explanation described later and institute's accompanying drawing.
Accompanying drawing explanation
Fig. 1 has shown the regulating valve structure schematic diagram of prior art.
What Fig. 2 had shown the utility model low noise cage type regulating valve just cuts open structural representation.
Fig. 3 has shown valve pocket vertical view cutaway drawing.
Fig. 4 has shown the enlarged diagram of valve cage and diversion member.
Fig. 5 has shown that large flow throttle element master analyses and observe and schematic perspective view.
Fig. 6 has shown that the separated protective element master of eddy current analyses and observe and schematic perspective view.
Fig. 7 has shown vibration damping limit element connection diagram.
Embodiment
Referring to accompanying drawing, shown that the utility model prevents eddy current collision, increase the low noise cage type regulating valve of flow in valve, can be used to various types of equipment or control the fluid regulation in pipeline.Although in conjunction with being used for turbine speed, turning to regulate to control and describe example disclosed herein, example described herein also can be more widely used in the fluid working substance adjustment process of different objects.
The main cross-sectional schematic of a kind of low noise cage type regulating valve that Fig. 2 provides for the utility model, this low noise cage type regulating valve comprises three way valve 33, combination valve cage 11, diversion member 14, large flow throttle element 12, the separated protective element 13 of eddy current, compressing member 15, vibration damping limit assembly 44 and valve plug 22.
Described three way valve has flow channel 331,332 and flow pass 333, described diversion member 14 and combination valve cage 11 are coaxially arranged on the opening end of flow pass 333, described combination valve cage 11 is positioned at described diversion member 14, diversion member 14 has cylindrical outer wall face 141, diversion member 14 defines territory, a plurality of fluid flow region with combination valve cage 11, and flow region can flow the fluid under little aperture condition in cylindrical valve cage.
Described large flow throttle element 12 is positioned at described diversion member 14 upper ends, the separated protective element 13 of described eddy current is positioned at described large flow throttle element 12 and described combination valve cage 11 is stretched in lower end, and described compressing member 15 is positioned at described large flow throttle element 12 upper ends and is pressed in described flow pass 333 to fall described large flow throttle element 12 and described diversion member 14.
Described valve plug 22 is cylindrical, it is connected to valve rod 23, slidably cover on diversion member 14, large flow throttle element 12 and compressing member 15 outer rims, thus, fluid by valve body 33 flows by the determining positions of valve plug 22, particularly, the driving up and down of valve rod 23, the inner cylindrical surface 221 of described valve plug 22 can move along diversion member 14, large flow throttle element 12 and compressing member 15, thereby opens or closes described flow channel 331,332 and diversion member 14, the fluid passage between flow throttle element 12 greatly.
As shown in Figure 2, left-half is depicted as valve plug 22 and is positioned at valve closing position, right-hand part is depicted as valve plug 22 and is positioned at valve opening position, optionally, described valve plug 22 also can be provided with half opened and closed positions between closed position and enable possition, when described half opened and closed positions, described valve plug 22 is only opened diversion member 14 and closed large flow throttle element 12.
Fig. 3 is the vertical view cutaway drawing of valve body 33, and two flow channels 331,332 and flow pass 333 connect the valve pocket 330 of installing.The fluid eddy generation in valve pocket flowing in order to alleviate two ends, valve pocket is set to quadratic curve type inner-cavity structure.
Referring to Fig. 4, diversion member 14 is provided with a plurality of flow region openings, each flow region opening 16 all extends comprising between the outer wall 141 of diversion member 14 and internal face 142, each opening section is shaped as rectangle or long-round-shape and mutually separates, the end of described diversion member 14 is arranged in the groove 3331 of valve body flow pass opening end, so that location and fixing to be provided.Described combination valve cage 11 can be comprised of multi-disc throttle element, and along circumferentially offering a plurality of flow region openings 16, the opening 16 of described throttle element be rectangle in each throttle element, the extension between the cylindrical inner wall 112 of combination valve cage 11 and cylindrical outer wall 111 of described opening.The bottom surface of combination valve cage 11 is provided with groove, and described groove coordinates installation with the boss 3332 of flow pass 333 opening ends.The open amount of the open amount of described diversion member 14 and valve cage 11 and size can be selected according to actual needs.
Wherein, the opening on described diversion member outer surface has chamfering on described outer surface.
Wherein, described combination valve cage can adopt the single-stage throttling valve cage of multistage throttle mazy type valve cage or cage cellular type
Fig. 5 is valve plug large flow throttle element 12 for increasing the fluid flow by valve under large aperture condition (being opening device), described throttle element 12 is tube-in-tube structure, it has cylindrical form interior surface 122 and cylindrical outer surface 121, cylindrical outer surface 121 contacts with valve plug 22, thereby locates along axis A.Between cylindrical form interior surface 122 and cylindrical outer surface 121, be limited with at least plural flow openings 124, described flow openings 124 can flow the fluid under the large aperture condition of valve plug between columniform outer surface 121 and internal surface 122.Large flow throttle element 12 lower end surfaces are provided with groove 123, to be positioned at the upper end of combination valve cage 11 and diversion member 14, described valve plug 22 is slidably covered on the outer surface of large flow throttle element 12.
Wherein, described flow openings has chamfering on described outer surface.
Wherein, described flow openings has enlarged area on described outer surface.
Wherein, described each flow openings sectional dimension is identical or different.
Preferably, a plurality of flow openings 124 between described cylindrical form interior surface 122 and cylindrical outer surface 121 are arranged along circumference longitudinal separation, described a plurality of flow openings 124 comprises long flow openings and short flow openings, arrange described long flow openings and short flow openings space, as shown in Figure 5, the opening arranging like this can effectively cushion flow, and reduces the eddy current that fluid flows into.
Fig. 6 prevents that fluid by valve cage is at the separated protective element 13 of eddy current of valve cage downstream eddy generation collision, described protective element 13 is substantially horn-like structure cylindrical structural, the large end face 134 of described protective element 13 is connected by welding with compressing member 15, utilizes the boss of compressing member 15 lower surfaces to be arranged on the upper-end surface groove of throttle element 12 interior spacing to realize.Described protective element 13 has jatharapanvartanasana wall 130, jatharapanvartanasana wall 130 is bell mouth shape near a side of large end face 134, and be limited with at least plural through-flow region 133, described through-flow region 133 is extended and is mutually separated between horn-like outer surface 131a and 132a, and the line stretcher in each through-flow region 13 is in same level.133 cross sections, described through-flow region are long-round-shape substantially, also can have other shapes, as: rectangle, ellipse, rhombus etc., open amount and size design according to concrete operating mode.Jatharapanvartanasana wall 130 is cylindrical near the outer surface 131b of small end, and internal surface 132b is conical surface, and angle can be between 1 ° to 5 °, is preferably 3 ° of Fig. 6 example.
Wherein, described in each, extend between described internal surface and described outer surface in through-flow region, and bearing of trend is parallel with valve flow channel axis.
Wherein, described through-flow region has chamfering on described eddy current resolution element outer surface.
Wherein, described through-flow region has enlarged area on described eddy current resolution element outer surface
Optionally, the lower end surface of protective element 13 and valve body flow pass opening end are in same level.
Fig. 7 is the enlarged diagram of vibration damping limit assembly 44, and described vibration damping limit assembly 44 is mainly used to trim (as compressing member 15) to carry out axially locating, and upper end compresses by valve gap 32.Vibration damping limit assembly 44 comprises guide rod 441, shock-absorbing spring 442, limited cap 443 and check washer 444, one end of described guide rod 441 is provided with outside thread, with with compressing member 15 on internal screw-thread screw location, the other end of described guide rod 441 is resisted against described valve gap 32 by limited cap 443, described guide rod 441 middle parts are expansion section, described shock-absorbing spring 442 is located between limited cap 443 and expansion section, described check washer 444 is between expansion section lower edge and compressing member, and described compressing member 15 is provided with the depression for check washer 444 location.
Wherein, valve plug 22 is offered the hole 223 of respective numbers in the position of limit assembly 44 correspondences, and the shape design in hole facilitates processing to be as the criterion.
Known by said structure, low noise cage type regulating valve tool of the present utility model has the following advantages:
1, the fluid director of coaxial package and mazy type valve cage are double-layer structure, through-flow region on described fluid director is along the circumferential direction uniformly distributed, and has solved the defect of prior art, effectively reduces flow noise, alleviate turbulent flow collision, increase through-current capability under large aperture condition;
2, large flow throttle element can strengthen through-current capability, when the complete aperture of valve plug, can effectively increase the runner of fluid;
3,, under large runner state, separated protective element can reduce noise to avoiding the vortex phenomenon of fluid, improves using effect and life-span;
4, vibration damping limit assembly can carry out vibration damping and compress location valve internal component, avoids the loosening of valve internal component and impacts, and improves working life.
It is evident that above description and to record be only for example rather than in order to limit disclosure of the present utility model, application or use.Although described in an embodiment and be described in the drawings embodiment, but the optimal mode that the utility model does not limit by accompanying drawing example and the conduct of describing is in an embodiment thought to be at present to implement the specific examples of instruction of the present utility model, scope of the present utility model will comprise any embodiment of the specification that falls into above and appended claim.
Claims (14)
1. a low noise cage type regulating valve, comprises three way valve, valve gap, valve rod, combination valve cage, diversion member, large flow throttle element, the separated protective element of eddy current, compressing member and valve plug, it is characterized in that:
In described valve body, be provided with valve pocket, flow channel and flow pass, flow channel and flow pass connect valve pocket, described diversion member is sealed and matched with combination valve cage coaxial package and with the opening end formation of flow pass, groove is offered in the lower end of described large flow throttle element, make it be positioned at diversion member and the upper end of combining valve cage, the separated protective element of described eddy current and compressing member are connected by welding, on compressing member, connect a plurality of vibration reduction and limiting devices, one end of described valve rod is through valve gap and valve plug interlock, described valve plug slidably covers on diversion member, large flow throttle element and compressing member outer rim, and when modulating valve is during in closed state, the seal face formation of valve plug and described flow channel is sealed and matched, form thus the partition of flow channel and flow pass.
2. modulating valve according to claim 1, is characterized in that: described valve pocket is quadratic curve shape, and described diversion member, combination valve cage, large flow throttle valve element, the separated protective element of eddy current are arranged in the quadratic curve shape valve pocket in described three way valve.
3. modulating valve according to claim 1, it is characterized in that: described vibration reduction and limiting device comprises guide rod, shock-absorbing spring and snubber, guide rod and compressing member are threaded connection, snubber and guide rod Spielpassung, and snubber contacts with valve gap and forms axial limiting.
4. modulating valve according to claim 1, it is characterized in that: diversion member has columniform outer surface and internal surface, described internal surface limits the cage hole with axis, described outer surface has at least two above flow region openings that connect, described opening and adjacent opening are separated, and described valve plug endwisely slips on described outer surface.
5. modulating valve according to claim 4, is characterized in that: the opening on described diversion member outer surface has chamfering on described outer surface.
6. modulating valve according to claim 4, is characterized in that: described combination valve cage adopts the single-stage throttling valve cage of multistage throttle mazy type valve cage or cage cellular type.
7. modulating valve according to claim 4, is characterized in that: between the internal surface of described diversion member and combination valve cage outer surface, a determining deviation is set.
8. modulating valve according to claim 1, it is characterized in that: described large flow throttle element is positioned at diversion member and the upper end of combining valve cage, large flow throttle element has outer surface and internal surface, and a plurality of flow openings of extending between described internal surface and described outer surface.
9. modulating valve according to claim 8, is characterized in that: described flow openings has chamfering on described outer surface.
10. modulating valve according to claim 8, is characterized in that: described flow openings has enlarged area on described outer surface.
11. modulating valve according to claim 8, is characterized in that: described each flow openings sectional dimension is identical or different.
12. modulating valve according to claim 1, is characterized in that: the top that is arranged at large flow throttle element after the separated protective element of described eddy current and the welding of valve cage compressing member are connected; The separated protective element of described eddy current is horn-like rotary structure, the open end of lower end and flow pass is in same level, described rotary structure has outer surface and the internal surface that is certain curvature, at the internal surface near compressing member one end, limiting at least plural sectional shape is long-round-shape or circular through-flow region, described in each, extend between described internal surface and described outer surface in through-flow region, and bearing of trend is parallel with valve flow channel axis.
13. modulating valve according to claim 12, is characterized in that: described through-flow region has chamfering on described eddy current resolution element outer surface.
14. modulating valve according to claim 12, is characterized in that: described through-flow region has enlarged area on described eddy current resolution element outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581073.5U CN203488780U (en) | 2013-09-18 | 2013-09-18 | Low-noise cage-type adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320581073.5U CN203488780U (en) | 2013-09-18 | 2013-09-18 | Low-noise cage-type adjusting valve |
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| Publication Number | Publication Date |
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| CN203488780U true CN203488780U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320581073.5U Expired - Fee Related CN203488780U (en) | 2013-09-18 | 2013-09-18 | Low-noise cage-type adjusting valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486328A (en) * | 2013-09-18 | 2014-01-01 | 哈尔滨工程大学 | Low-noise cage regulating valve |
| CN113236796A (en) * | 2021-04-15 | 2021-08-10 | 西派集团有限公司 | Novel high-pressure-resistant and wear-resistant regulating valve |
-
2013
- 2013-09-18 CN CN201320581073.5U patent/CN203488780U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486328A (en) * | 2013-09-18 | 2014-01-01 | 哈尔滨工程大学 | Low-noise cage regulating valve |
| CN103486328B (en) * | 2013-09-18 | 2016-02-03 | 哈尔滨工程大学 | Low noise cage type regulating valve |
| CN113236796A (en) * | 2021-04-15 | 2021-08-10 | 西派集团有限公司 | Novel high-pressure-resistant and wear-resistant regulating valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20140918 |
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| EXPY | Termination of patent right or utility model |