CN204312141U - A kind of embedded valve beam assembly structure - Google Patents
A kind of embedded valve beam assembly structure Download PDFInfo
- Publication number
- CN204312141U CN204312141U CN201420811447.2U CN201420811447U CN204312141U CN 204312141 U CN204312141 U CN 204312141U CN 201420811447 U CN201420811447 U CN 201420811447U CN 204312141 U CN204312141 U CN 204312141U
- Authority
- CN
- China
- Prior art keywords
- valve
- hole
- valve disc
- lining
- nut
- 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 relates to a kind of embedded valve beam assembly structure, comprise valve beam, valve disc, lining, valve disc nut and valve rod, valve beam is provided with multiple through hole, the cross section on the top of through hole is square, the cross section of the bottom of through hole is circular, and the aperture on through hole top is greater than the aperture of through hole bottom, the top of through hole and the joint forming station terrace of bottom, lining becomes square-outside and round-inside through-hole structure, and lining is positioned on step surface, valve disc penetrates from the via bottoms valve beam, and penetration liner, valve disc nut also becomes square-outside and round-inside through-hole structure, the top of valve disc nut and valve disc is threaded connection, and be Spielpassung between valve disc nut and through hole, two valve rods are separately fixed on the valve beam inside the valve disc of two ends.What the utility model prevented valve disc to be taken up by air-flow effectively rotates in a circumferential direction, and avoids valve disc to be subject to reversed fatigue, improves the working life of valve disc, and then improves the Safety performance of unit.
Description
Technical field
The utility model relates to the valve beam assembly structure carrying plate type adjusting valve for controlling steam-turbine flow, particularly relates to a kind of embedded valve beam assembly structure.
Background technique
In conventional valve beam assembly structure, valve disc nut usually protrudes from outside valve beam and is easily subject to shock of steamy flow, though some valve beam assembly valve disc nut to be sunk among valve beam when valve disc small guide vane, due to the effect of flow-induced vibration, still can there is dither, rotation, thus produce reversed fatigue, cause valve disc bolt fracture, valve disc case accident, reduce the working life of adjusting valve, affect unit safety operation.
Summary of the invention
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of embedded valve beam assembly structure, and this structure can effectively prevent valve disc from rotating, and reduces wearing and tearing, extends the working life of adjusting valve.
In order to realize above-mentioned object, the utility model have employed following technological scheme:
A kind of embedded valve beam assembly structure, comprise valve beam, valve disc, lining, valve disc nut and valve rod, described valve beam is provided with multiple through hole, the cross section on the top of described through hole is square, the cross section of the bottom of described through hole is circular, and the aperture on through hole top is greater than the aperture of through hole bottom, the top of described through hole and the joint forming station terrace of bottom, described lining becomes square-outside and round-inside through-hole structure, and lining is positioned on step surface, described valve disc penetrates from the via bottoms valve beam, and penetration liner, described valve disc nut also becomes square-outside and round-inside through-hole structure, the top of valve disc nut and valve disc is threaded connection, and be Spielpassung between valve disc nut and through hole, two valve rods are separately fixed on the valve beam inside the valve disc of two ends.
Preferably: the two ends of described valve beam become coniform, and the inwall on the top of the through hole of described valve beam adopts circular arc chamfering.Such structure reduces the impact of steam flow, delays the wearing and tearing of valve disc.
Preferably: the outer side wall of described valve disc nut and lining all adopts circular arc chamfering.
The utility model, by the length of adjustment lining, controls opening sequence and the adjustment stroke of each valve disc.When after valve rod lift valve beam, lining, by the dynamic lifting of valve sill bolt, lifts valve disc after touching valve disc nut, thus controls flow.The valve disc caused to prevent flow-induced vibration rotates, and valve beam adopts squared counter bore structure, and corresponding valve disc and valve disc nut are also the forms in outer square inner circle hole.After valve disc and valve disc nut assemble, be embedded in the squared counter bore of valve beam.Spielpassung is adopted between valve disc nut and valve beam.What this structure prevented valve disc to be taken up by air-flow effectively rotates in a circumferential direction, and avoids valve disc to be subject to reversed fatigue, improves the working life of valve disc, and then improves the Safety performance of unit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is cross-sectional view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
The embedded valve beam assembly structure of one as depicted in figs. 1 and 2, comprise valve beam 1, valve disc 2, lining 3, valve disc nut 4 and valve rod 5, described valve beam 1 is provided with multiple through hole, the cross section on the top of described through hole is square, the cross section of the bottom of described through hole is circular, and the aperture on through hole top is greater than the aperture of through hole bottom, the top of described through hole and the joint forming station terrace of bottom, described lining 3 one-tenth square-outside and round-inside through-hole structure, and lining 3 is positioned on step surface, described valve disc 2 penetrates from the via bottoms valve beam 1, and penetration liner 3, described valve disc nut 5 also becomes square-outside and round-inside through-hole structure, valve disc nut 5 is threaded connection with the top of valve disc 2, and be Spielpassung between valve disc nut 5 and through hole, two valve rods 5 are separately fixed on the valve beam 1 inside two ends valve disc 2.
The two ends of described valve beam 1 become coniform, and the inwall on the top of the through hole of described valve beam 1 adopts circular arc chamfering.The outer side wall of described valve disc nut 4 and lining 3 all adopts circular arc chamfering.
Working procedure of the present utility model is as follows, and time static, valve disc 2 is pressed on valve seat, and steam can not enter, when steam turbine operation, oil engine, by instruction action, is with ovable valve stem 5 poppet valve beam 1, when lining 3 contacts valve disc nut 4, valve disc 2 will be driven to lift off a seat, and now steam enters.
This structure due to valve disc nut be square structure, therefore can not rotate under the impact of steam flow, reduce the wearing and tearing of valve disc, sunk valve disc nut and valve beam two ends cone structure are reduced the impact of steam flow in addition, avoid valve disc be subject to reversed fatigue and damage, improve Safety performance.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. an embedded valve beam assembly structure, it is characterized in that: comprise valve beam (1), valve disc (2), lining (3), valve disc nut (4) and valve rod (5), described valve beam (1) is provided with multiple through hole, the cross section on the top of described through hole is square, the cross section of the bottom of described through hole is circular, and the aperture on through hole top is greater than the aperture of through hole bottom, the top of described through hole and the joint forming station terrace of bottom, described lining (3) becomes square-outside and round-inside through-hole structure, and lining (3) is positioned on step surface, described valve disc (2) penetrates from the via bottoms valve beam (1), and penetration liner (3), described valve disc nut (5) also becomes square-outside and round-inside through-hole structure, valve disc nut (5) is threaded connection with the top of valve disc (2), and be Spielpassung between valve disc nut (5) and through hole, two valve rods (5) are separately fixed on the valve beam (1) of two ends valve disc (2) inner side.
2. the embedded valve beam assembly structure of one according to claim 1, is characterized in that: the two ends of described valve beam (1) become coniform, and the inwall on the top of the through hole of described valve beam (1) adopts circular arc chamfering.
3. the embedded valve beam assembly structure of one according to claim 1, is characterized in that: the outer side wall of described valve disc nut (4) and lining (3) all adopts circular arc chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420811447.2U CN204312141U (en) | 2014-12-18 | 2014-12-18 | A kind of embedded valve beam assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420811447.2U CN204312141U (en) | 2014-12-18 | 2014-12-18 | A kind of embedded valve beam assembly structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312141U true CN204312141U (en) | 2015-05-06 |
Family
ID=53134462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420811447.2U Expired - Fee Related CN204312141U (en) | 2014-12-18 | 2014-12-18 | A kind of embedded valve beam assembly structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481599A (en) * | 2014-12-18 | 2015-04-01 | 浙江华元汽轮机械有限公司 | Embedded valve beam assembly structure |
-
2014
- 2014-12-18 CN CN201420811447.2U patent/CN204312141U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481599A (en) * | 2014-12-18 | 2015-04-01 | 浙江华元汽轮机械有限公司 | Embedded valve beam assembly structure |
| CN104481599B (en) * | 2014-12-18 | 2016-01-27 | 浙江华元汽轮机械有限公司 | A kind of embedded valve beam assembly structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |