CN201129538Y - Noise reduction type valve seat fixing caging - Google Patents
Noise reduction type valve seat fixing caging Download PDFInfo
- Publication number
- CN201129538Y CN201129538Y CNU2007200826905U CN200720082690U CN201129538Y CN 201129538 Y CN201129538 Y CN 201129538Y CN U2007200826905 U CNU2007200826905 U CN U2007200826905U CN 200720082690 U CN200720082690 U CN 200720082690U CN 201129538 Y CN201129538 Y CN 201129538Y
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- cage
- valve seat
- reduction hole
- cage body
- 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 - Fee Related
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Abstract
The utility model discloses a valve seat fixing cage of noise reduction type, comprising a cylinder cage body provided with a plurality of noise reduction holes through the wall of the cage body, wherein the noise reduction holes are cylinder uniformly distributed and laminated on the circumference of the cage body, one noise reduction hole of the upper layer is above the middle point of the arc between two noise reduction holes of the lower layer adjacent the noise reduction hole. When medium passes the cage and suddenly reduces and expands, the pressure decrease is uniformly shared in the cage on the throttle points between the valve core and valve seat shared in each noise reduction layer. The utility model reduces pressure layer from layer to prevent high flow speed of medium, and adopts at least six noise reduction layers to realize gradual pressure decrease to reduce noise.
Description
Technical field
The utility model relates to a kind of control valve accessory, relates in particular to fixedly cage of a kind of noise reduction formula valve seat that connects the control valve valve seat.
Background technique
Control valve is a very important final element in the automatic control system, is used for the regulated fluid flow, overcomes interference, guarantees that controlled variable reaches given craft index.The valve portion of control valve is made up of the internals and the valve body of valve, and the internals of valve comprise spool, valve seat, valve rod, stuffing box and valve gap etc.NOISE ON ENVIRONMENT harm is very big, and the acoustic vibration meeting causes making a difference from the stability of controlling system of resonance phenomenon, and can control valve effectively reduce noise becomes the big factor that can control system efficient stable work.The tradition control valve does not have decrease of noise functions as single, double seat control valve, can only be applied to require in the low industrial process automatic control system of noise, application has bigger narrow limitation, not only can influence the stability of control system during use, also can cause control valve to shorten greatly working life.
The model utility content
The purpose of this utility model is to overcome the problems referred to above that traditional control valve such as single-seat valve, double seated valve exist, and fixedly cage of a kind of noise reduction formula valve seat is provided.The utility model can reduce gas pressure and controlled vortex flow, has reduced noise, has solved the noise problem of control valve inside, has prolonged control valve working life.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of noise reduction formula valve seat is cage fixedly, comprise the cage body, it is characterized in that: described cage body is a cylindrical body, described cage body is provided with the noise reduction hole of a plurality of perforation cage body walls, described noise reduction hole is cylindric, on cage body circumference, be that stratiform is evenly distributed, and arbitrary noise reduction hole, upper strata is directly over the arcuate midway point between lower floor two noise reduction holes adjacent with this noise reduction hole.
The noise reduction hole of layered arrangement is equidistant layered arrangement, and equidistantly arrange in the noise reduction hole on every layer.
Described noise reduction hole layer is at least six layers.
External wall of described noise reduction hole and cage and perforation place of cage body inwall have radian.
Aperture, described noise reduction hole is identical.
Advantage of the present utility model is:
One, the utility model is provided with the evenly distributed noise reduction hole of stratiform, has reduced the eddy current that pipeline is brought in gas pressure and control into, has solved the noise problem of control valve inside.
When two, medium is by the utility model, unexpected contraction and expansion take place, pressure drop is divided equally in the utility model, pressure drop not only is carried on the throttle point between spool and the valve seat, also be carried in each noise reduction layer, the utility model adopts the design of step-down successively to avoid medium high flow rate phenomenon, and at least 6 layers of noise reduction layer can keep low flow velocity to realize pressure decline, have reduced noise.
Three, the cage body be cylindrical body fixedly the control valve valve seat is simple and convenient, and antihypertensive effect is desirable more.
Four, the noise reduction hole also has guide functions, and there is certain radian at two ends, and water conservancy diversion and antihypertensive effect are better.
Five, the arbitrary noise reduction in upper strata hole helps reducing gas pressure and control and brings the pipeline eddy current into directly over the arcuate midway point between lower floor two noise reduction holes adjacent with this noise reduction hole.
Description of drawings
Fig. 1 is that the utility model A-A is to cross-sectional view
Fig. 2 is that the utility model B-B is to cross-sectional view
Fig. 3 is that the utility model C-C is to cross-sectional view
Embodiment
A kind of noise reduction formula valve seat is cage fixedly, comprise cage body 1, described cage body 1 is a cylindrical body, cage body 1 is provided with the noise reduction hole 2 of a plurality of perforation cage body 1 walls, noise reduction hole 2 is cylindric, on cage body 1 circumference, be that stratiform is evenly distributed, and arbitrary noise reduction hole 2, upper strata is directly over the arcuate midway point between two adjacent noise reduction holes of lower floor and this noise reduction hole 2.Wherein, the noise reduction hole 2 of layered arrangement is equidistant layered arrangement, and equidistantly arrange in the noise reduction hole 2 on every layer.Noise reduction hole layer is at least six layers, and there is radian in noise reduction hole 2 with cage body 1 outer wall and 1 inwall perforation place of cage body, and 2 apertures, noise reduction hole are identical.Described cage body 1 can have multistage, and a cylinder is an one-level, and every layer of cylinder constitutes a buck stages.In the multistage pressure drop process, each grade noise all is lowered.
The utility model mainly is applicable to the noise reduction of compressible fluids such as steam, air, rock gas.The evenly distributed noise reduction hole of stratiform is set, has reduced the eddy current that pipeline is brought in gas pressure and control into, solved the noise problem of control valve inside.When medium passes through the utility model, unexpected contraction and expansion take place, pressure drop is divided equally in the utility model, pressure drop not only is carried on the throttle point between spool and the valve seat, also be carried in each noise reduction layer, the utility model adopts the design of step-down successively to avoid medium high flow rate phenomenon, and at least 6 layers of noise reduction layer can keep low flow velocity to realize pressure decline, have reduced noise.The cage body be cylindrical body fixedly the control valve valve seat is simple and convenient, and antihypertensive effect is desirable more.The noise reduction hole also has guide functions, and there is certain radian at two ends, and water conservancy diversion and antihypertensive effect are better.Arbitrary noise reduction hole, upper strata helps reducing gas pressure and control and brings the pipeline eddy current into directly over the arcuate midway point between lower floor two noise reduction holes adjacent with this noise reduction hole.
Noise reduction process of the present utility model is as follows: when MEDIA FLOW is crossed the noise reduction hole, shrink and expand, pressure drop is fixedly being divided equally in the cage, so pressure drop not only is carried on the throttle point between spool and the valve seat, also is carried in each noise reduction layer, adopt the design of step-down successively to solve the high flow rate of medium, be provided with at least six layers noise reduction layer, make medium keep low flow velocity, realize pressure decline, reach the purpose that reduces noise.
Claims (5)
1, the fixing cage of a kind of noise reduction formula valve seat, comprise cage body (1), it is characterized in that: described cage body (1) is a cylindrical body, described cage body (1) is provided with the noise reduction hole (2) of a plurality of perforation cage body walls, described noise reduction hole (2) is cylindric, on cage body (1) circumference is that stratiform is evenly distributed, and arbitrary noise reduction hole, upper strata (2) is positioned at directly over the arcuate midway point between lower floor two noise reduction holes adjacent with this noise reduction hole (2).
2, the fixing cage of noise reduction formula valve seat according to claim 1 is characterized in that: the noise reduction hole (2) of layered arrangement is equidistant layered arrangement, the equidistant arrangement in noise reduction hole (2) on every layer.
3, the fixing cage of noise reduction formula valve seat according to claim 1, it is characterized in that: described noise reduction hole layer is at least six layers.
4, according to the fixing cage of claim 1,2 or 3 described noise reduction formula valve seats, it is characterized in that: there is radian in described noise reduction hole (2) with external wall of cage and perforation place of cage body inwall.
5, according to the fixing cage of claim 1,2 or 3 described noise reduction formula valve seats, it is characterized in that: aperture, described noise reduction hole (2) is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200826905U CN201129538Y (en) | 2007-12-25 | 2007-12-25 | Noise reduction type valve seat fixing caging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200826905U CN201129538Y (en) | 2007-12-25 | 2007-12-25 | Noise reduction type valve seat fixing caging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129538Y true CN201129538Y (en) | 2008-10-08 |
Family
ID=40017384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200826905U Expired - Fee Related CN201129538Y (en) | 2007-12-25 | 2007-12-25 | Noise reduction type valve seat fixing caging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129538Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065973A (en) * | 2015-04-21 | 2016-11-02 | 费希尔控制产品国际有限公司 | There is the noise reduction diffuser trim of V-shape portion |
-
2007
- 2007-12-25 CN CNU2007200826905U patent/CN201129538Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065973A (en) * | 2015-04-21 | 2016-11-02 | 费希尔控制产品国际有限公司 | There is the noise reduction diffuser trim of V-shape portion |
| CN106065973B (en) * | 2015-04-21 | 2020-04-14 | 费希尔控制产品国际有限公司 | Noise reducing diffuser trim with chevrons |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081008 Termination date: 20111225 |