CN208858937U - A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove - Google Patents
A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove Download PDFInfo
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- CN208858937U CN208858937U CN201821392597.9U CN201821392597U CN208858937U CN 208858937 U CN208858937 U CN 208858937U CN 201821392597 U CN201821392597 U CN 201821392597U CN 208858937 U CN208858937 U CN 208858937U
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- pressure difference
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Abstract
The utility model belongs to shut-off valve, and in particular to a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove.A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove, including valve body, flap, wherein flap is arranged in the channel of valve body, and flap can be opened and closed by outside control, and straight-through labyrinth is equipped at the intracorporal outlet throttling channel of valve.The effect of the utility model is: utilizing V-groove labyrinth seal structure dynamic sealing principle, it is effectively controlled the slip of valve, fluid velocity between reduction valve clack sealing surface, improves valve overall sealing performance and service life, is the non-scouring-proof stop valve for being often used high temperature, high pressure differential environment.
Description
Technical field
The utility model belongs to shut-off valve, and in particular to a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove.
Background technique
Existing scouring-proof stop valve, valve clack sealing structure, such as Fig. 1, the structure are the flaps after valve clack sealing surface disengaging
Valve export channel is not yet left completely, is throttled by the fit clearance of valve body and flap, and clearance seal principle is belonged to, from
And the scour resistance of valve is improved, although this structure improves scour resistance to a certain extent, according to thermal power plant
The reflection of owner's service condition, is super-pressure, high-temperature medium particularly with one end some in extra-supercritical unit, one end is atmospheric pressure
Shut-off valve, service life is relatively short, and the effect is unsatisfactory, has seriously affected boiler using safe.
Utility model content
The utility model in view of the drawbacks of the prior art, provides a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove.
The technical solution of the utility model is: a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove, including valve body, valve
Valve, wherein flap is arranged in the channel of valve body, and flap can be opened and closed by outside control, in the intracorporal outlet of valve
Straight-through labyrinth is equipped at throttling passage.
A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as described above, wherein further include that valve body throttling is logical
The V type groove of the V-groove in road exit, the valve body throttling passage exit is arranged at the intracorporal outlet throttling channel of valve.
A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as described above, wherein the valve body throttling is logical
The V-groove in road exit is annular groove, tri- or more parallel groove of totally three Dao Huo.
A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as described above, wherein the valve body throttling is logical
The section of per pass groove is triangle in the V-groove in road exit.
A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as described above, wherein the valve body throttling is logical
The depth of per pass groove is 1~2 millimeter in the V-groove in road exit.
The effect of the utility model is: utilizing V-groove labyrinth seal structure dynamic sealing principle, is effectively controlled the leakage of valve
Rate, reduce valve clack sealing surface between fluid velocity, improve valve overall sealing performance and service life, be it is non-be often used high temperature,
The scouring-proof stop valve of high pressure differential environment.
Detailed description of the invention
Fig. 1 is former scouring-proof stop valve valve clack sealing structure schematic diagram.
Fig. 2 is High Pressure Difference shut-off valve antiscour valve clack sealing structure schematic diagram of the throttling passage with V-groove.
Fig. 3 is the partial enlarged view of Fig. 1.
The schematic diagram of Fig. 4 valve body and flap assembly relation.
Fig. 5 is fluid schematic in the utility model opening process.
In figure: 1, valve body, 2, flap, 3, the V-groove in valve body throttling passage exit, 4, sealing deceleration area, 5, dynamic sealing
Vortex.
Specific embodiment
As shown in Fig. 2, a kind of High Pressure Difference shut-off valve antiscour valve clack sealing structure of throttling passage with V-groove, main to wrap
Include valve body 1, flap 2, valve body throttling passage exit V-groove 3.
As shown in Figure 2,3, 4, multiple tracks labyrinth seal V type groove is equipped in valve body throttling passage exit.It should be noted that because
Flap be only to be axially moved, so V-groove cannot use helix machine-shaping, it is complete that several can only be processed into respectively
V-groove, V-groove number should be greater than being equal to 3, thus form straight-through labyrinth principle, in addition cooperation static sealing surface uses,
Enhance scour resistance.
As shown in figure 5, forming fluid schematic in valve body and flap opening process, in figure, valve static sealing surface is had disengaged from,
But due to the labyrinth seal principle of valve body throttling passage exit V-groove, valve is in throttling sealing state, relative to
The labyrinth throttling sealing effect of gap throttling sealing, the utility model is more preferable, can preferably be adapted to high temperature, high pressure differential environment.
Above-mentioned specific embodiment is used to illustrate this patent, rather than limits this patent, in this patent
In spirit and scope of protection of the claims, to any modifications and changes that this patent is made, the protection model of this patent is both fallen within
It encloses.
The structure is that former clearance sealing structure is become multi-stage maze sealing structure in former antiscour structure basis, is utilized
Fluid enters cavity, the sudden enlargement of a fluid stream interface, and strong whirlpool is formed in cavity, reduces fluid dynamic energy, reduces high pressure
High-speed Medium caused by difference washes away valve static sealing surface, guarantees valve overall sealing performance and effectively prolongs the service life.
Claims (5)
1. a kind of High Pressure Difference shut-off valve of outlet throttling channel with V-groove, it is characterised in that: including valve body (1), flap (2),
Middle flap (2) is arranged in the channel of valve body (1), and flap (2) can be opened and closed by outside control, in valve body (1)
Straight-through labyrinth is equipped at interior outlet throttling channel.
2. a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as described in claim 1, it is characterised in that: also wrap
The V-groove (3) in valve body throttling passage exit is included, V-groove (3) setting in the valve body throttling passage exit is in valve body (1)
Outlet throttling channel at.
3. a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as claimed in claim 2, it is characterised in that: described
The V-groove (3) in valve body throttling passage exit be annular groove, tri- or more parallel groove of totally three Dao Huo.
4. a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as claimed in claim 3, it is characterised in that: described
Valve body throttling passage exit V-groove (3) in the section of per pass groove be triangle.
5. a kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove as claimed in claim 4, it is characterised in that: described
Valve body throttling passage exit V-groove (3) in per pass groove depth be 1~2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821392597.9U CN208858937U (en) | 2018-08-28 | 2018-08-28 | A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821392597.9U CN208858937U (en) | 2018-08-28 | 2018-08-28 | A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208858937U true CN208858937U (en) | 2019-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821392597.9U Active CN208858937U (en) | 2018-08-28 | 2018-08-28 | A kind of High Pressure Difference shut-off valve of the outlet throttling channel with V-groove |
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| CN (1) | CN208858937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719657A (en) * | 2021-08-30 | 2021-11-30 | 华中科技大学 | Pressure compensation type valve core assembly, direct-acting overflow valve and pilot operated overflow valve |
-
2018
- 2018-08-28 CN CN201821392597.9U patent/CN208858937U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719657A (en) * | 2021-08-30 | 2021-11-30 | 华中科技大学 | Pressure compensation type valve core assembly, direct-acting overflow valve and pilot operated overflow valve |
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