CN103629432A - Valve cage structure for large-caliber low-noise regulating valve - Google Patents
Valve cage structure for large-caliber low-noise regulating valve Download PDFInfo
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- CN103629432A CN103629432A CN201310697792.8A CN201310697792A CN103629432A CN 103629432 A CN103629432 A CN 103629432A CN 201310697792 A CN201310697792 A CN 201310697792A CN 103629432 A CN103629432 A CN 103629432A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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Abstract
The objective of the invention is to provide a valve cage structure for a large-caliber low-noise regulating valve, which comprises a class A throttling disc, class B throttling discs and class C throttling discs, wherein the A disc is used as a base; the multiple class B throttling discs and the multiple class C throttling discs are arranged from bottom to top; and the throttling discs are fixed on the pressed bottom disc A by using pins through structures in the throttling discs, thus finally forming a whole valve cage structure. Between the inner surface and the outer surface of the valve cage, each disc comprises at least one to multiple throttling walls arranged in a concentric circle manner, and each throttling wall is provided with at least one to multiple openings. The bottom surface between the throttling walls of the class B discs and the class C discs is also provided with a plurality of opening, the multiple discs are combined to form a flow region along the axial direction of the valve cage, and the flow region can effectively increase the fluid flow passing through the valve cage. According to the invention, fluid can be dispersed into multiple branches through the communicated openings, and the branches can collide with each other after passing through the throttling walls, thus lowering the energy level as mush as possible.
Description
Technical field
What the present invention relates to is a kind of valve.
Background technique
Modulating valve is widely used in process control system, for regulating the process parameter such as rate-of flow, pressure of industrial automation process control field.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 provide operating mode required particular fluid flow characteristic, 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.In addition, valve cage and valve closing member are coaxially installed, thereby improve the balance and stability of closure element.
Due to Complex Phenomena in Vertical Bell Jars such as ubiquity turbulent flow, separated flows in valve flowing channel, make the operational noise of valve become gradually an important evaluation criterion of valve mass.The use of valve cage can reduce the flow velocity of runner inner fluid effectively, alleviates the turbulence pulsation noise and cavitation erosion noise of fluid.In valve, the control of flow is determined by the relative position of valve plug and valve cage, for example, by the accurate motion of regulating valve control member (: valve disc, valve plug), accurately controls the working medium flow that flows through modulating valve.Because the throttling action of valve cage causes the flow loss of cage type regulating valve larger, during valve cage design, how balance reduces flow noise and reduces flow loss two aspect functions, is the problem that the design of novel low-noise regulating valve faces.
Summary of the invention
The object of the present invention is to provide the speed that has reduced High Temperature High Pressure working medium, eliminated a kind of valve cage structure for heavy caliber low noise modulating valve of the cavitation phenomenon that pressure drop causes after throttling.
The object of the present invention is achieved like this:
A kind of valve cage structure for heavy caliber low noise modulating valve of the present invention, it is characterized in that: comprise category-A throttling disc, category-B throttling disc, C class throttling disc, category-A throttling disc includes cylindrical form interior surface and cylindrical outer surface, between the internal surface of category-A throttling disc and outer surface, arrange two-layer or two-layer above throttling wall, on the adjacent throttling wall of the outer surface of category-A throttling disc, do not there is pass through openings, on all the other throttling walls, be along the circumferential direction evenly arranged and be no less than plural pass through openings; Category-B throttling disc comprises cylindrical form interior surface and cylindrical outer surface, between the internal surface of category-B throttling disc and outer surface, arrange two-layer or two-layer above throttling wall, on the adjacent throttling wall of the outer surface of category-B throttling disc, do not there is pass through openings, on all the other throttling walls, be along the circumferential direction evenly arranged and be no less than plural pass through openings, on the disc bottom surface between throttling wall, be along the circumferential direction evenly arranged and be no less than plural pass through openings; C class throttling disc comprises cylindrical form interior surface and cylindrical outer surface, between the internal surface of C class throttling disc and outer surface, arrange two-layer or two-layer above throttling wall, on the throttling wall of C class throttling disc, be along the circumferential direction evenly arranged and be no less than plural pass through openings, on the disc bottom surface between the throttling wall of C class throttling disc, be along the circumferential direction evenly arranged and be no less than plural pass through openings; Described category-A throttling disc has a slice, and category-B throttling disc and C class throttling disc have respectively a slice at least, according to the order of category-A throttling disc, category-B throttling disc, C class throttling disc, arrange from bottom to top, and by the pin structure that links into an integrated entity.
The present invention can also comprise:
1, the internal surface of category-A throttling disc, category-B throttling disc and C class throttling disc is projected as circular and overlaps, the circle that is projected as of the outer surface of category-A throttling disc, category-B throttling disc and C class throttling disc also overlaps, the quantity of the throttling wall of category-A throttling disc, category-B throttling disc and C class throttling disc is equal, and in category-A throttling disc, category-B throttling disc or C class throttling disc, the pass through openings of adjacent throttling wall staggers mutually.
2, category-A throttling disc has 1, and category-B throttling disc has 4, and C class throttling disc has 5, and the throttling wall of category-A throttling disc, category-B throttling disc and C class throttling disc all has 4.
3, described pass through openings is rectangle, circle, long-round-shape or rhombus.
Advantage of the present invention is: the pass through openings in the multistage multi-channel throttling disc in the present invention on cylindrical wall is multiply tributary by fluid dispersion, and each burst of tributary collides with each other again to fall as much as possible low energy levels after throttling wall, each fluid passage is by staggered the forming of pass through openings of specific quantity, crossing of each fluid all will reduce flow working medium flow velocity with shunting, with this, realize the object that reduces flow noise.
Accompanying drawing explanation
Fig. 1 is stereogram of the present invention;
Fig. 2 a is each throttling disc pin connection structure schematic diagram a of the present invention, and Fig. 2 b is each throttling disc pin connection structure schematic diagram b of the present invention;
Fig. 3 a is C class throttling disc plan view, and Fig. 3 b is C class throttling disc perspective view, and Fig. 3 c is pass through openings axis schematic diagram;
Fig. 4 a is category-B throttling disc plan view, and Fig. 4 b is category-B throttling disc perspective view;
Fig. 5 a is category-A throttling disc plan view, and Fig. 5 b is category-A throttling disc perspective view;
Fig. 6 a is valve cage longitudinal section inner flow passage and throttling disc inner flow passage schematic diagram a, and Fig. 6 b is valve cage longitudinal section inner flow passage and throttling disc inner flow passage schematic diagram b.
Embodiment
Below in conjunction with accompanying drawing, for example the present invention is described in more detail:
In conjunction with Fig. 1～6, the present invention includes: category-A lower sheeting, category-B throttling disc, C class throttling disc and be used for connecting the pin that each disc is used.1 above category-B, C class throttling disc are arranged from the bottom to top in turn, and application pin is connected on a slice category-A lower sheeting, forms valve cage device.
Category-A lower sheeting has cylindrical form interior surface and cylindrical outer surface, on the throttling wall depending on, does not have pass through openings at outer surface.Between inner and outer surface, be the throttling wall that arranged in concentric circles is no less than one deck, be along the circumferential direction evenly arranged and be no less than plural pass through openings on throttling wall, described pass through openings is the regular geometric shapes such as rectangle, circle, long-round-shape or rhombus.
Category-B throttling disc has cylindrical form interior surface and cylindrical outer surface, on the throttling wall depending on, does not have pass through openings at outer surface.Between inner and outer surface, be the throttling wall that arranged in concentric circles is no less than one deck, be along the circumferential direction evenly arranged and be no less than plural pass through openings on throttling wall, described pass through openings is the regular geometric shapes such as rectangle, circle, long-round-shape or rhombus.On the disc bottom surface between throttling wall, be along the circumferential direction evenly arranged and be no less than plural pass through openings, described pass through openings becomes the regular geometric shapes such as long-round-shape or circle substantially.
C class throttling disc has cylindrical form interior surface and cylindrical outer surface.Between inner and outer surface, be the throttling wall that arranged in concentric circles is no less than one deck, be along the circumferential direction evenly arranged and be no less than plural pass through openings on throttling wall, described pass through openings is the regular geometric shapes such as rectangle, circle, long-round-shape or rhombus.On the disc bottom surface between throttling wall, be along the circumferential direction evenly arranged and be no less than plural pass through openings, described pass through openings becomes the regular geometric shapes such as long-round-shape or circle substantially.
The axis of the pass through openings on the different throttling walls of all kinds of throttling discs is arranged in the reference plane that arrange with respect to described valve cage axis 18 quadratures, and point to valve cage axis or be tangential on an imaginary circles cylinder 17 centered by valve cage axis, described imaginary circles cylinder diameter should be less than the diameter of valve cage cylindrical form interior surface.Pass through openings axis on adjacent throttling wall is along the circumferential direction tilt fixing.
This valve cage is combined by multi-disc throttling disc, and the closure element of valve is arranged on outside valve cage or sends out in cage.Throttling disc can be divided three classes according to the ability difference of throttling: category-A press down egative film, category-B throttling disc and C class throttling disc, category-B and C class throttling disc are arranged from the bottom up, utilize pin to connect firmly in turn and are pressing down on egative film A.
All kinds of discs comprise the multistage throttle wall that is arranged in concentric circles, and disc is no less than the flow region of plural pass through openings along described throttling wall circumferential arrangement, and opening axis is positioned at the reference plane that relative valve cage axis quadrature arranges, and points to valve cage axis.Opening axis in same disc on different throttling walls is tilt fixing.Wherein category-B and C class disc are arranged the flow region that is no less than plural pass through openings in disc on the bottom surface between adjacent two-stage throttling wall, and the axis of opening is parallel with valve cage axis, and this opening can effectively increase the working medium flow by valve cage.
Fig. 1 is valve cage orifice union perspective view in known modulating valve, and this valve cage structure comprises 1 lower sheeting A, and 4 category-B throttling discs and 5 C class throttling discs form.Category-A throttling disc, as the reference for installation of valve cage assembly, does not have opening on the bottom surface of disc.Category-B and C class throttling disc are arranged from bottom to top in turn, apply pin and be connected on lower sheeting A, as shown in Figure 2 on structure 11 positions.Valve cage assembly has cylindrical outer wall 13 and inwall 12, and between inwall and outer wall, valve cage defines one or more fluid flow regions 15,14.These flow regions can flow fluid working substance between outer wall 13 and inwall 12, and the Working fluid flow by valve is the determining positions outside valve cage or in valve cage by cypriot valve components.
Referring to Fig. 3 to Fig. 5, every class throttling disc includes 4 grades of throttling walls that are arranged in concentric circles, c1 as shown in Figure 3, c2, c3, c4.On throttling walls at different levels, arrange and be no less than plural pass through openings 14.Each pass through openings is substantially rectangle, but also can there are other shapes, as circle, long-round-shape, rhombus etc., the central axis of pass through openings should be positioned at and the valve cage axis plane that is orthogonal, and point to valve cage axis, pass through openings central axis on adjacent throttling wall becomes tilt fixing, and as a in Fig. 3, b, c, angle can be the same or different.On throttling walls at different levels between the shape of pass through openings, quantity, size and adjacent throttling wall upper shed axis angle can select different patterns according to different operating modes.
In order to improve the through-current capability of valve cage, other throttling discs except pressing down disc A are on the bottom surface between adjacent two-stage throttling wall, in same position, arrange and be no less than plural pass through openings 15, the shape of the pass through openings 15 on each throttling disc, quantity, large I are selected different patterns according to different operating modes.
After the combination of multi-disc throttling disc, the fluid flowing passage that bottom surface opening 15 and each throttling wall upper shed 14 can form as shown in Figure 6.At valve cage in the radial direction, when this flow channel forces fluid to flow to opening valve cage internal surface c1 level throttling wall on by the opening 14 on C class throttling disc c4 level throttling wall by the opening on c2, c3 level throttling wall by valve cage outer surface 13, flow direction changes, and in flow process, fluid collides with each other.On the axial direction of valve cage, when fluid flows through internal surface that opening on C class throttling disc c4 level throttling wall 14 arrives category-Bs and category-A throttling disc and exports 14, fluid also must change flow direction.The change of this flow direction is that opening 15 guiding that run through to category-B throttling disc bottom surface from the bottom surface of C class throttling disc due to fluid produce.In general, the variation of fluid flow direction will cause the loss of rate of flow of fluid, hydrodynamic pressure and volume of fluid, also can effectively reduce due to the mobile turbulization noise of fluid, eddy current crack simultaneously.
Pass through openings in multistage multi-channel throttling disc in the present invention on cylindrical wall is multiply tributary by fluid dispersion, and each burst of tributary collides with each other again to fall as much as possible low energy levels after throttling wall, each fluid passage is by staggered the forming of pass through openings of specific quantity, crossing of each fluid all will reduce flow working medium flow velocity with shunting, with this, realize the object that reduces flow noise.
Claims (5)
1. the valve cage structure for heavy caliber low noise modulating valve, it is characterized in that: comprise category-A throttling disc, category-B throttling disc, C class throttling disc, category-A throttling disc includes cylindrical form interior surface and cylindrical outer surface, between the internal surface of category-A throttling disc and outer surface, arrange two-layer or two-layer above throttling wall, on the adjacent throttling wall of the outer surface of category-A throttling disc, do not there is pass through openings, on all the other throttling walls, be along the circumferential direction evenly arranged and be no less than plural pass through openings; Category-B throttling disc comprises cylindrical form interior surface and cylindrical outer surface, between the internal surface of category-B throttling disc and outer surface, arrange two-layer or two-layer above throttling wall, on the adjacent throttling wall of the outer surface of category-B throttling disc, do not there is pass through openings, on all the other throttling walls, be along the circumferential direction evenly arranged and be no less than plural pass through openings, on the disc bottom surface between throttling wall, be along the circumferential direction evenly arranged and be no less than plural pass through openings; C class throttling disc comprises cylindrical form interior surface and cylindrical outer surface, between the internal surface of C class throttling disc and outer surface, arrange two-layer or two-layer above throttling wall, on the throttling wall of C class throttling disc, be along the circumferential direction evenly arranged and be no less than plural pass through openings, on the disc bottom surface between the throttling wall of C class throttling disc, be along the circumferential direction evenly arranged and be no less than plural pass through openings; Described category-A throttling disc has a slice, and category-B throttling disc and C class throttling disc have respectively a slice at least, according to the order of category-A throttling disc, category-B throttling disc, C class throttling disc, arrange from bottom to top, and by the pin structure that links into an integrated entity.
2. a kind of valve cage structure for heavy caliber low noise modulating valve according to claim 1, it is characterized in that: the circle that is projected as of the internal surface of category-A throttling disc, category-B throttling disc and C class throttling disc also overlaps, the circle that is projected as of the outer surface of category-A throttling disc, category-B throttling disc and C class throttling disc also overlaps, the quantity of the throttling wall of category-A throttling disc, category-B throttling disc and C class throttling disc is equal, and in category-A throttling disc, category-B throttling disc or C class throttling disc, the pass through openings of adjacent throttling wall staggers mutually.
3. a kind of valve cage structure for heavy caliber low noise modulating valve according to claim 1 and 2, it is characterized in that: category-A throttling disc has 1, category-B throttling disc has 4, and C class throttling disc has 5, and the throttling wall of category-A throttling disc, category-B throttling disc and C class throttling disc all has 4.
4. a kind of valve cage structure for heavy caliber low noise modulating valve according to claim 1 and 2, is characterized in that: described pass through openings is rectangle, circle, long-round-shape or rhombus.
5. a kind of valve cage structure for heavy caliber low noise modulating valve according to claim 3, is characterized in that: described pass through openings is rectangle, circle, long-round-shape or rhombus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310697792.8A CN103629432B (en) | 2013-12-18 | 2013-12-18 | A kind of valve cage structure for heavy caliber low noise control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310697792.8A CN103629432B (en) | 2013-12-18 | 2013-12-18 | A kind of valve cage structure for heavy caliber low noise control valve |
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| CN103629432A true CN103629432A (en) | 2014-03-12 |
| CN103629432B CN103629432B (en) | 2016-05-25 |
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| CN201310697792.8A Expired - Fee Related CN103629432B (en) | 2013-12-18 | 2013-12-18 | A kind of valve cage structure for heavy caliber low noise control valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017161940A1 (en) * | 2016-03-25 | 2017-09-28 | 吴忠仪表有限责任公司 | Cavitation-resistant laminated depressurization valve cage |
| CN107239070A (en) * | 2017-06-29 | 2017-10-10 | 中国船舶重工集团公司第七0三研究所 | The test device and method of testing of a kind of industrial process control system |
| CN107975605A (en) * | 2016-10-21 | 2018-05-01 | 艾默生过程管理调节技术公司 | Grid for adjuster controls valve cage |
| CN108730612A (en) * | 2018-06-04 | 2018-11-02 | 苏州赛易特环保科技有限公司 | A kind of six chip valve discs of environmental protection equipment |
| CN110873200A (en) * | 2018-08-30 | 2020-03-10 | 费希尔控制产品国际有限公司 | Valve trim apparatus for control valve |
| CN112664668A (en) * | 2019-10-16 | 2021-04-16 | 艾默生过程管理调节技术公司 | Circumferential segmented valve cage |
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| US6039076A (en) * | 1998-06-30 | 2000-03-21 | Copes-Vulcan, Inc. | High energy loss fluid control device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017161940A1 (en) * | 2016-03-25 | 2017-09-28 | 吴忠仪表有限责任公司 | Cavitation-resistant laminated depressurization valve cage |
| CN107975605A (en) * | 2016-10-21 | 2018-05-01 | 艾默生过程管理调节技术公司 | Grid for adjuster controls valve cage |
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| CN108730612A (en) * | 2018-06-04 | 2018-11-02 | 苏州赛易特环保科技有限公司 | A kind of six chip valve discs of environmental protection equipment |
| CN110873200A (en) * | 2018-08-30 | 2020-03-10 | 费希尔控制产品国际有限公司 | Valve trim apparatus for control valve |
| CN110873200B (en) * | 2018-08-30 | 2023-08-25 | 费希尔控制产品国际有限公司 | Valve trim apparatus for a control valve |
| CN112664668A (en) * | 2019-10-16 | 2021-04-16 | 艾默生过程管理调节技术公司 | Circumferential segmented valve cage |
| CN112664668B (en) * | 2019-10-16 | 2023-08-08 | 艾默生过程管理调节技术公司 | Valve cage and valve |
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|---|---|
| CN103629432B (en) | 2016-05-25 |
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