CN215214805U - Multistage pressure reducing valve structure - Google Patents
Multistage pressure reducing valve structure Download PDFInfo
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- CN215214805U CN215214805U CN202121009980.3U CN202121009980U CN215214805U CN 215214805 U CN215214805 U CN 215214805U CN 202121009980 U CN202121009980 U CN 202121009980U CN 215214805 U CN215214805 U CN 215214805U
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- valve
- pressure reducing
- cage
- pressure
- cavity
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Abstract
The utility model discloses a multi-stage pressure reducing valve structure, wherein the side wall of a valve cage is connected with a first cavity channel of a valve body, and the bottom of a valve seat is connected with a second cavity channel of the valve body; the valve cover is arranged above the valve cage and is fixed at the upper part of the valve body, so that the valve seat is sequentially pressed on the valve body by the valve cage and the valve cover from top to bottom; the valve cavity is arranged in the center of the valve seat and is communicated with the valve cage and the second cavity; the valve core is arranged in the valve cover, penetrates through the valve cover and is arranged along the axial direction of the valve cavity, and one end of the valve core is a sealing end; the widths of the pressure reducing steps are sequentially reduced from the inner side of the valve core to the outer side of the end part of the valve core, and the pressure reducing steps play a role in retarding the speed reduction of a flowing high-pressure medium; the pressure reducing holes are formed in the side wall of the valve cage and can reduce pressure of flowing high-pressure media. Through the cooperation of two different valve pressure reduction structures, the medium pressure can be more effectively controlled, and the effect of prolonging the service life of the valve is achieved.
Description
Technical Field
The utility model relates to a pneumatic valve field, in particular to multistage depressurization valve structure.
Background
The pneumatic regulating valve is applied to systems under severe working conditions, and mainly comprises industries such as coal chemical industry, thermal power plants, nuclear power plants, heating systems and other steam systems. The regulating valve in the prior art comprises a valve body component, an actuating mechanism, a positioner and the like. When original governing valve was to big pressure differential operating mode, all adopted the structural design of valve cage to realize the step-down effect, but this single valve cage design can not satisfy the step-down effect under the special operating mode totally sometimes.
SUMMERY OF THE UTILITY MODEL
In order to realize the purpose, the utility model discloses the technical scheme who adopts is:
a multi-stage pressure reducing valve structure, comprising:
the valve comprises a valve seat, a valve cage, a first cavity channel, a second cavity channel, a first cavity channel and a second cavity channel, wherein the valve seat and the valve cage are arranged in the valve body;
the valve cover is arranged above the valve cage and fixed on the upper part of the valve body, so that the valve seat is sequentially pressed on the valve body by the valve cage and the valve cover from top to bottom;
the valve cavity is arranged in the center of the valve seat and is communicated with the valve cage and the second cavity channel;
the valve core is arranged in the valve cover, penetrates through the valve cover and is arranged along the axial direction of the valve cavity, and one end of the valve core is a sealing end;
the widths of the pressure reducing steps are sequentially reduced from the inner side of the valve core to the outer side of the end part of the valve core, and the pressure reducing steps play a role in retarding and decelerating the flowing high-pressure medium;
the pressure reducing holes are formed in the side wall of the valve cage and can reduce pressure of flowing high-pressure media.
In a preferred embodiment of the present invention, the valve cover is fixed to the upper portion of the valve body by a flange.
In a preferred embodiment of the present invention, the plurality of pressure reduction steps are upwardly protruded and sequentially arranged at equal intervals.
In a preferred embodiment of the present invention, the number of the plurality of decompression steps is 5.
In a preferred embodiment of the present invention, the valve seat further comprises a valve seat gasket disposed at the bottom of the valve seat, wherein the valve seat gasket is used for enhancing the sealing performance between the valve seat and the valve body.
The beneficial effects of the utility model reside in that:
the utility model provides a multistage pressure reduction valve structure through the valve pressure reduction structure of two kinds of differences of cooperation to can more effectual control medium pressure, reach extension valve life's effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a sectional view of the product of the present invention.
Fig. 2 is an enlarged view of the seal end of the cartridge of the present invention.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, a multi-stage pressure reducing valve structure includes a cage 5 disposed above a valve seat 3; the valve seat 3 and the valve cage 5 are mounted together in an embedded manner in the valve body 1, the side wall of the valve cage 5 being connected to a first channel 8a of the valve body 1, and the bottom of the valve seat 3 being connected to a second channel 8b of the valve body 1. The valve cover 6 is arranged above the valve cage 5, so that the valve seat 3 is pressed on the valve body 1 from top to bottom by the valve cage 5 and the valve cover 6 in sequence. The valve cover 6 is fixed on the upper part of the valve body 1 through a flange 9. The valve chamber 3a is arranged centrally in the valve seat 3, so that the valve cage 5 communicates with the second chamber 8b via the valve chamber 3 a. The valve core 4 is disposed through the valve cover 6 in the axial direction of the valve chamber 3a, and its sealing end 4a is inserted into the valve chamber 3a to form a barrier between the cage 5 and the second chamber 8 b. In order to enhance the sealing performance between the valve seat 3 and the valve body 1, a circle of valve seat gasket 2 is arranged on the ground of the valve seat 3.
Referring to fig. 2, a plurality of raised pressure-reducing steps 4aa are provided at equal intervals in sequence on the sealing end 4a, and the width of the pressure-reducing steps 4aa decreases in sequence from the inner side of the valve body 4 to the outer side of the end thereof. The other end of the valve core 4 moves upwards under the driving of the external pneumatic actuator, so that the medium flows into the second cavity channel 8b through the gap between the valve core 4 and the valve seat 3, and simultaneously the high-pressure medium is influenced by the resistance of the pressure reducing step 4aa protruding on the valve core 4, and the pressure of the high-pressure medium is gradually reduced. The side wall of the valve cage 5 is also provided with a plurality of pressure reducing holes 5a, and a certain pressure reducing effect can be formed when high-pressure media pass through the pressure reducing holes 5 a.
The utility model discloses a valve step-down structure of two kinds of differences of cooperation to can more effectual control medium pressure, reach extension valve life's effect.
Claims (5)
1. A multi-stage pressure reducing valve structure, comprising:
the valve comprises a valve seat, a valve cage, a first cavity channel, a second cavity channel, a first cavity channel and a second cavity channel, wherein the valve seat and the valve cage are arranged in the valve body;
the valve cover is arranged above the valve cage and fixed on the upper part of the valve body, so that the valve seat is sequentially pressed on the valve body by the valve cage and the valve cover from top to bottom;
the valve cavity is arranged in the center of the valve seat and is communicated with the valve cage and the second cavity channel;
the valve core is arranged in the valve cover, penetrates through the valve cover and is arranged along the axial direction of the valve cavity, and one end of the valve core is a sealing end;
the widths of the pressure reducing steps are sequentially reduced from the inner side of the valve core to the outer side of the end part of the valve core, and the pressure reducing steps play a role in retarding and decelerating the flowing high-pressure medium;
the pressure reducing holes are formed in the side wall of the valve cage and can reduce pressure of flowing high-pressure media.
2. A multi-stage pressure reducing valve structure as claimed in claim 1, wherein said valve cover is fixed to the upper portion of said valve body by a flange.
3. The structure of a multi-step pressure reducing valve as claimed in claim 1, wherein the pressure reducing steps are upwardly protruded and sequentially arranged at equal intervals.
4. The multi-stage pressure reducing valve structure as claimed in claim 1, wherein the number of the pressure reducing steps is 5.
5. The multi-stage pressure reducing valve structure as claimed in claim 1, further comprising a valve seat gasket disposed at a bottom of the valve seat, the valve seat gasket for enhancing sealing between the valve seat and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121009980.3U CN215214805U (en) | 2021-05-12 | 2021-05-12 | Multistage pressure reducing valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121009980.3U CN215214805U (en) | 2021-05-12 | 2021-05-12 | Multistage pressure reducing valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215214805U true CN215214805U (en) | 2021-12-17 |
Family
ID=79418718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121009980.3U Active CN215214805U (en) | 2021-05-12 | 2021-05-12 | Multistage pressure reducing valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215214805U (en) |
-
2021
- 2021-05-12 CN CN202121009980.3U patent/CN215214805U/en active Active
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