CN110864125A - High pressure difference stop valve with V-shaped groove on outer circle of valve clack - Google Patents
High pressure difference stop valve with V-shaped groove on outer circle of valve clack Download PDFInfo
- Publication number
- CN110864125A CN110864125A CN201810987008.XA CN201810987008A CN110864125A CN 110864125 A CN110864125 A CN 110864125A CN 201810987008 A CN201810987008 A CN 201810987008A CN 110864125 A CN110864125 A CN 110864125A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve clack
- clack
- shaped groove
- excircle
- 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.)
- Pending
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Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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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
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
Abstract
The invention belongs to a stop valve, and particularly relates to a high differential pressure stop valve with a valve clack outer circle provided with a V-shaped groove. The utility model provides a valve clack excircle takes high pressure difference stop valve in V type groove, wherein, includes valve body, valve clack, and wherein the valve clack setting is in the passageway of valve body to the valve clack can receive external control to carry out the switching, is equipped with the V type groove of valve clack excircle department on the excircle of valve clack. The invention has the following effects: by utilizing the dynamic sealing principle of the V-shaped groove labyrinth sealing structure, the leakage rate of the valve is effectively controlled, the fluid speed between the sealing surfaces of the valve clacks is reduced, the overall sealing performance of the valve is improved, the service life of the valve is prolonged, and the anti-scouring stop valve is an anti-scouring stop valve which is very suitable for high-temperature and high-pressure difference environments.
Description
Technical Field
The invention belongs to a stop valve, and particularly relates to a high differential pressure stop valve with a valve clack outer circle provided with a V-shaped groove.
Background
Present anti-scouring stop valve, valve clack seal structure, as figure 1, this structure is after the sealed face of valve clack breaks away from, the valve clack has not left valve exit channel completely yet, rely on the valve body to throttle with the cooperation clearance of valve clack, belong to the clearance seal principle, thereby improve the anti-scouring performance of valve, this kind of structure has improved anti-scouring performance to a certain extent, but reflect according to the owner's in service behavior of thermal power plant, especially for some one end in the super supercritical unit for superhigh pressure, high temperature medium, one end is the stop valve of atmospheric pressure, its life is shorter relatively, the effect is not ideal, boiler safety in utilization has been seriously influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the high differential pressure stop valve with the valve clack outer circle provided with the V-shaped groove.
The technical scheme of the invention is as follows: the utility model provides a valve clack excircle takes high pressure difference stop valve in V type groove, wherein, includes valve body, valve clack, and wherein the valve clack setting is in the passageway of valve body to the valve clack can receive external control to carry out the switching, is equipped with the V type groove of valve clack excircle department on the excircle of valve clack.
The high differential pressure stop valve with the V-shaped groove in the outlet throttling channel is characterized in that the V-shaped groove at the outer circle of the valve clack is an annular groove, and three or more parallel grooves are formed.
The high differential pressure stop valve with the valve clack excircle provided with the V-shaped groove is characterized in that the section of each groove in the V-shaped groove at the valve clack excircle is triangular.
The high differential pressure stop valve with the valve clack excircle provided with the V-shaped groove is characterized in that the depth of each groove in the V-shaped groove at the valve clack excircle is 1-2 mm.
The invention has the following effects: by utilizing the dynamic sealing principle of the V-shaped groove labyrinth sealing structure, the leakage rate of the valve is effectively controlled, the fluid speed between the sealing surfaces of the valve clacks is reduced, the overall sealing performance of the valve is improved, the service life of the valve is prolonged, and the anti-scouring stop valve is an anti-scouring stop valve which is very suitable for high-temperature and high-pressure difference environments.
Drawings
FIG. 1 is a schematic diagram of the sealing structure of the valve clack of the original anti-flushing stop valve.
Fig. 2 is a schematic view of an anti-scouring sealing structure with a V-shaped groove on the basis of an original valve flap.
Fig. 3 is a partially enlarged view of fig. 1.
FIG. 4 is a schematic illustration of the assembled relationship of the valve body and the valve flap.
FIG. 5 is a schematic view of the flow during the opening process of the present invention.
In the figure: 1. the valve comprises a valve body, 2, a valve clack, 3, a V-shaped groove at the excircle of the valve clack, 4, a sealed deceleration area, 5 and a dynamic seal vortex.
Detailed Description
This patent is further described below with reference to the accompanying drawings:
as shown in figure 2, the high differential pressure resistant stop valve scouring sealing structure with the throttle passage provided with the V-shaped groove mainly comprises a valve body 1, a valve clack 2 and a V-shaped groove 3 at the excircle of the valve clack.
As shown in figure 2, a plurality of labyrinth seal V-shaped grooves are arranged on the excircle of the original valve clack. It should be noted that the number of the V-shaped grooves is more than or equal to 3, so that a straight-through labyrinth sealing principle is formed, and the scouring resistance is enhanced by matching with a static sealing surface.
As shown in figure 3, a schematic fluid diagram is formed in the opening process of the valve body and the valve clack, in the diagram, a static sealing surface of the valve is separated, but the valve is still in a throttling sealing state due to the labyrinth sealing principle of the V-shaped groove at the valve clack, and compared with clearance throttling sealing, the labyrinth throttling sealing structure has a better throttling sealing effect and can be better suitable for high-temperature and high-pressure-difference environments.
The foregoing detailed description is intended to be illustrative of the present patent and is not intended to be limiting, since any modifications and variations of the present patent are intended to fall within the spirit and scope of the appended claims.
Claims (4)
1. The utility model provides a valve clack excircle takes high pressure difference stop valve in V type groove which characterized in that: including valve body (1), valve clack (2), wherein valve clack (2) set up in the passageway of valve body (1) to valve clack (2) can receive external control to carry out the switching, are equipped with V type groove (3) of valve clack excircle department on the excircle of valve clack (2).
2. The high differential pressure stop valve with the V-shaped groove on the outer circle of the valve clack as claimed in claim 1, characterized in that: the V-shaped groove (3) at the excircle of the valve clack is an annular groove, and three or more parallel grooves are formed.
3. The high differential pressure stop valve with the V-shaped groove on the outer circle of the valve clack as claimed in claim 2, characterized in that: the section of each groove in the V-shaped groove (3) at the excircle of the valve clack is triangular.
4. The high differential pressure stop valve with the V-shaped groove on the outer circle of the valve clack as claimed in claim 3, characterized in that: the depth of each groove in the V-shaped groove (3) at the excircle of the valve clack is 1-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810987008.XA CN110864125A (en) | 2018-08-28 | 2018-08-28 | High pressure difference stop valve with V-shaped groove on outer circle of valve clack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810987008.XA CN110864125A (en) | 2018-08-28 | 2018-08-28 | High pressure difference stop valve with V-shaped groove on outer circle of valve clack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110864125A true CN110864125A (en) | 2020-03-06 |
Family
ID=69651481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810987008.XA Pending CN110864125A (en) | 2018-08-28 | 2018-08-28 | High pressure difference stop valve with V-shaped groove on outer circle of valve clack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110864125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117704080A (en) * | 2024-02-06 | 2024-03-15 | 中国空气动力研究与发展中心空天技术研究所 | Labyrinth dynamic seal movable joint |
-
2018
- 2018-08-28 CN CN201810987008.XA patent/CN110864125A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117704080A (en) * | 2024-02-06 | 2024-03-15 | 中国空气动力研究与发展中心空天技术研究所 | Labyrinth dynamic seal movable joint |
| CN117704080B (en) * | 2024-02-06 | 2024-04-05 | 中国空气动力研究与发展中心空天技术研究所 | Labyrinth dynamic seal movable joint |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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