CN210566285U - Steam regulating valve structure - Google Patents
Steam regulating valve structure Download PDFInfo
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- CN210566285U CN210566285U CN201921577202.7U CN201921577202U CN210566285U CN 210566285 U CN210566285 U CN 210566285U CN 201921577202 U CN201921577202 U CN 201921577202U CN 210566285 U CN210566285 U CN 210566285U
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- valve
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- valve body
- cage
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Abstract
The utility model provides a steam regulating valve structure, it reduces the atmospheric pressure difference effectively, reduces pressure under the cavitation pressure to having avoided breaking of gas pearl, having prevented that the impact force that the gas pearl broke and produced from destroying case, disk seat and having improved the life of case, disk seat, it includes valve body and valve gap, set up air inlet and gas outlet on the valve body, correspond on the valve body the air inlet with be provided with the case between the gas outlet, the case passes through the disk seat and connects the valve body, valve rod, its characterized in that are connected to the case: the valve comprises a valve body and is characterized in that a cage is arranged on the valve body corresponding to the valve core, the valve core moves in the cage in a guiding mode, the cage comprises a sleeve and a throttling cover, the throttling cover is arranged on the outer side of the sleeve, a plurality of rows of sleeve through holes gradually decreasing from the upper end to the lower end are formed in the sleeve, and a plurality of rows of throttling cover through holes are formed in the throttling cover.
Description
Technical Field
The utility model relates to a technical field that the valve industry was made, in particular to steam control valve structure.
Background
The regulating valve used on the steam pipeline has the advantages that because the temperature in the steam pipeline is high, the valve core and the valve seat can generate cavitation when the pressure difference between the steam inlet and the steam outlet is large, the valve core and the valve seat are damaged, and the service life of the valve core and the valve seat is shortened.
Disclosure of Invention
To the technical problem, the utility model provides a steam control valve structure, it reduces the atmospheric pressure difference effectively, with pressure reduction to under the cavitation pressure to avoided breaking of gas pearl, prevented that the impact force that the gas pearl broke the production from destroying case, disk seat and improved the life of case, disk seat.
The technical scheme is as follows: the utility model provides a steam regulating valve structure, its includes valve body and valve gap, set up air inlet and gas outlet on the valve body, correspond on the valve body the air inlet with be provided with the case between the gas outlet, the case passes through the disk seat and connects the valve body, the valve rod is connected to the case, its characterized in that: the valve comprises a valve body and is characterized in that a cage is arranged on the valve body corresponding to the valve core, the valve core moves in the cage in a guiding mode, the cage comprises a sleeve and a throttling cover, the throttling cover is arranged on the outer side of the sleeve, a plurality of rows of sleeve through holes gradually decreasing from the upper end to the lower end are formed in the sleeve, and a plurality of rows of throttling cover through holes are formed in the throttling cover.
The valve is further characterized in that a valve core sinking groove corresponding to the cage is formed in the valve core; the uppermost row of the sleeve through holes are rectangular through holes; the sleeve through holes and the throttle cover through holes are circumferentially and uniformly staggered; the valve core is provided with a valve core balancing hole which penetrates through the upper end of the valve core and the valve core sinking groove; a cage balance hole is formed in the cage; a valve core gasket is arranged between the valve seat and the valve body, and the valve core gasket is formed by winding an asbestos gasket on the outer side of stainless steel cobalt alloy; a packing pad is arranged between the valve rod and the valve cover; the filler pad is made of chromium material.
The above structure is adopted in the utility model, correspond on the valve body the case is provided with the cage, and the case is in guiding motion in the cage, cage include sleeve and throttle cover, and the throttle cover sets up the sleeve outside is provided with the multirow from the upper end to the lower extreme size sleeve through-hole that diminishes gradually on the sleeve, and the throttle covers and is provided with multirow throttle cover through-hole, and high-pressure steam passes through throttle cover and sleeve and realizes multistage decompression, realizes the accurate regulation of steam pressure, with pressure reduction to under the cavitation pressure to avoid breaking of gas pearl, prevented that the gas pearl from breaking the life that the impact force produced breaks case, disk seat have improved case, disk seat.
Drawings
FIG. 1 is a schematic structural view of a steam control valve of the present invention;
FIG. 2 is a schematic diagram of a cage structure;
FIG. 3 is a view of the sleeve through hole arrangement;
fig. 4 is a layout view of the throttle cover through holes.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1, 2, 3 and 4, a steam regulating valve structure comprises a valve body 1 and a valve cover 2, wherein an air inlet 3 and an air outlet 4 are arranged on the valve body 1, a valve core 5 is arranged between the air inlet 3 and the air outlet 4 on the valve body 1, the valve core 5 is connected with the valve body 1 through a valve seat 6, the valve core 5 is connected with a valve rod 7, a cage 8 is arranged on the valve body 1 corresponding to the valve core 5, the valve core 5 moves in the cage 8 in a guiding manner, the cage 8 comprises a sleeve 9 and a throttle cover 10, the throttle cover 10 is arranged outside the sleeve 9, the sleeve 9 is welded with the throttle cover 10, a plurality of rows of sleeve through holes 11 with gradually reduced sizes from the upper end to the lower end are arranged on the sleeve 9, a plurality of rows of throttle cover through holes 12 are arranged on the throttle cover 10, high-pressure steam realizes multi-stage pressure reduction through the throttle cover and the sleeve, realizes accurate regulation of, the valve core and the valve seat are prevented from being damaged by impact force generated by the breakage of the air balls, and the service life of the valve core and the valve seat is prolonged.
The valve core 5 is provided with a valve core sinking groove 13 corresponding to the cage cover 8, and the valve core sinking groove reduces the pressure at the upper end of the valve core, balances the stress of the valve core and reduces the thrust of the actuating mechanism.
One row of top is the rectangle through-hole in the sleeve through-hole 11, and sleeve through-hole 11 and the even staggered arrangement in throttle cover through-hole 12 circumference have further guaranteed the accurate regulation of the temperature of giving vent to anger of governing valve inlet air temperature.
A valve core balance hole 14 is formed in the valve core 5, and the valve core balance hole 14 penetrates through the upper end of the valve core and the valve core sinking groove 13; cage cover balance holes 15 are formed in the cage cover 8, so that the balance of the pressure at the upper end and the lower end of the valve core is realized, and the thrust of the valve rod actuating mechanism is reduced.
A valve core gasket 16 is arranged between the valve seat 6 and the valve body 1, the valve core gasket 16 is formed by winding an asbestos gasket on the outer side of stainless steel cobalt alloy, so that the combination of hard sealing and soft sealing between the valve seat and the valve body is realized, and the aging of a sealing material is prevented;
a packing pad 17 is arranged between the valve rod 7 and the valve cover 2, and the packing pad 17 is made of chromium materials to prevent leakage of the valve.
The present invention and the embodiments thereof have been described above schematically, and the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto, and those skilled in the art will be suggested by the teachings thereof, and without departing from the spirit of the present invention, without creatively designing the structural mode and the embodiments similar to the technical solution, all of which shall fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a steam regulating valve structure, its includes valve body and valve gap, set up air inlet and gas outlet on the valve body, correspond on the valve body the air inlet with be provided with the case between the gas outlet, the case passes through the disk seat and connects the valve body, the valve rod is connected to the case, its characterized in that: the valve comprises a valve body and is characterized in that a cage is arranged on the valve body corresponding to the valve core, the valve core moves in the cage in a guiding mode, the cage comprises a sleeve and a throttling cover, the throttling cover is arranged on the outer side of the sleeve, a plurality of rows of sleeve through holes gradually decreasing from the upper end to the lower end are formed in the sleeve, and a plurality of rows of throttling cover through holes are formed in the throttling cover.
2. A steam regulating valve structure in accordance with claim 1, wherein: and the valve core is provided with a valve core sinking groove corresponding to the cage cover.
3. A steam regulating valve structure in accordance with claim 1, wherein: the uppermost end row in the sleeve through hole is a rectangular through hole.
4. A steam regulating valve structure in accordance with claim 1, wherein: the sleeve through holes and the throttle cover through holes are circumferentially and uniformly staggered.
5. A steam regulating valve structure as defined in claim 2, wherein: the valve core is provided with a valve core balancing hole which penetrates through the upper end of the valve core and the valve core sinking groove.
6. A steam regulating valve structure in accordance with claim 1, wherein: cage cover balancing holes are formed in the cage cover.
7. A steam regulating valve structure in accordance with claim 1, wherein: a valve core gasket is arranged between the valve seat and the valve body, and the valve core gasket is formed by winding an asbestos pad on the outer side of stainless steel cobalt alloy.
8. A steam regulating valve structure in accordance with claim 1, wherein: and a packing pad is arranged between the valve rod and the valve cover.
9. A steam regulating valve structure in accordance with claim 8, wherein: the filler pad is made of chromium material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921577202.7U CN210566285U (en) | 2019-09-23 | 2019-09-23 | Steam regulating valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921577202.7U CN210566285U (en) | 2019-09-23 | 2019-09-23 | Steam regulating valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566285U true CN210566285U (en) | 2020-05-19 |
Family
ID=70632375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921577202.7U Active CN210566285U (en) | 2019-09-23 | 2019-09-23 | Steam regulating valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210566285U (en) |
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2019
- 2019-09-23 CN CN201921577202.7U patent/CN210566285U/en active Active
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