CN104481599A - Embedded valve beam assembly structure - Google Patents
Embedded valve beam assembly structure Download PDFInfo
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- CN104481599A CN104481599A CN201410794838.2A CN201410794838A CN104481599A CN 104481599 A CN104481599 A CN 104481599A CN 201410794838 A CN201410794838 A CN 201410794838A CN 104481599 A CN104481599 A CN 104481599A
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- valve
- hole
- valve disc
- lining
- assembly structure
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- Control Of Turbines (AREA)
Abstract
The invention relates to an embedded valve beam assembly structure which comprises valve beams, valve discs, a lining, valve disc nuts and valve stems, wherein the valve beams are provided with multiple through holes; the cross section of the upper part of each through hole is square, the cross section of the lower part of each through hole is round, and the hole diameter of the upper part of each through hole is greater than that of the lower part of each through hole; a step surface is formed at the joint of the upper and lower parts of the through holes; the lining is of an externally-square and internally-round through hole structure and is positioned in the step surface; the valve discs penetrate into the through holes in the valve stems and penetrate through the lining; the valve disc nuts are also of an externally-square and internally-round through hole structure ; the valve disc nuts and the upper part of the valve discs are in threaded connection; the valve disc nuts is in clearance fit with the through holes; the two valve stems are respectively fixed at the valve beams inside the valve discs at two ends. According to the embedded valve beam assembly structure, the valve discs are effectively prevented from being driven to rotate circumferentially by airflow and are prevented from alternate fatigue, the service life of each valve disc is prolonged, and the safety performance of the unit is further improved.
Description
Technical field
The present invention relates to the valve beam assembly structure carrying plate type adjusting valve for controlling steam-turbine flow, particularly relating 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 object of this invention is to provide a kind of embedded valve beam assembly structure, 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, present invention employs 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 present invention, 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 invention.
Fig. 2 is cross-sectional view of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention 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 invention 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 invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain 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 |
|---|---|---|---|
| CN201410794838.2A CN104481599B (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 |
|---|---|---|---|
| CN201410794838.2A CN104481599B (en) | 2014-12-18 | 2014-12-18 | A kind of embedded valve beam assembly structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104481599A true CN104481599A (en) | 2015-04-01 |
| CN104481599B CN104481599B (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410794838.2A Active CN104481599B (en) | 2014-12-18 | 2014-12-18 | A kind of embedded valve beam assembly structure |
Country Status (1)
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| CN (1) | CN104481599B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305913A (en) * | 2020-04-01 | 2020-06-19 | 杭州汽轮机股份有限公司 | Regulating steam valve, steam turbine and regulating steam valve opening method |
| CN112983568A (en) * | 2019-12-16 | 2021-06-18 | 上海电气电站设备有限公司 | Steam turbine lifting plate valve structure |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB476004A (en) * | 1937-01-11 | 1937-11-30 | C A Dunham Company Ltd | Improvements in radiator inlet valves |
| GB576960A (en) * | 1944-04-14 | 1946-04-29 | Charles Burrows | Improvements in or relating to screw-down steam stop and like valves of the lift type |
| US4368758A (en) * | 1979-09-25 | 1983-01-18 | Siemens Aktiengesellschaft | Device for controlling a steam or gas turbine |
| CN101285405A (en) * | 2008-06-03 | 2008-10-15 | 东方电气集团东方汽轮机有限公司 | Steam turbine steam extraction regulation valve |
| CN102359650A (en) * | 2011-10-31 | 2012-02-22 | 浙江华元汽轮机械有限公司 | High-temperature high-pressure steam split-ranging valve control device |
| CN202176376U (en) * | 2011-06-24 | 2012-03-28 | 锡林郭勒苏尼特碱业有限公司 | Adjusting steam valve of turbo-generator unit |
| CN203532797U (en) * | 2013-10-17 | 2014-04-09 | 上海风雷阀门集团有限公司 | Steam regulating valve |
| CN203717980U (en) * | 2014-01-03 | 2014-07-16 | 东方电气集团东方汽轮机有限公司 | Steam turbine high-pressure main steam regulating valve |
| CN204312141U (en) * | 2014-12-18 | 2015-05-06 | 浙江华元汽轮机械有限公司 | A kind of embedded valve beam assembly structure |
-
2014
- 2014-12-18 CN CN201410794838.2A patent/CN104481599B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB476004A (en) * | 1937-01-11 | 1937-11-30 | C A Dunham Company Ltd | Improvements in radiator inlet valves |
| GB576960A (en) * | 1944-04-14 | 1946-04-29 | Charles Burrows | Improvements in or relating to screw-down steam stop and like valves of the lift type |
| US4368758A (en) * | 1979-09-25 | 1983-01-18 | Siemens Aktiengesellschaft | Device for controlling a steam or gas turbine |
| CN101285405A (en) * | 2008-06-03 | 2008-10-15 | 东方电气集团东方汽轮机有限公司 | Steam turbine steam extraction regulation valve |
| CN202176376U (en) * | 2011-06-24 | 2012-03-28 | 锡林郭勒苏尼特碱业有限公司 | Adjusting steam valve of turbo-generator unit |
| CN102359650A (en) * | 2011-10-31 | 2012-02-22 | 浙江华元汽轮机械有限公司 | High-temperature high-pressure steam split-ranging valve control device |
| CN203532797U (en) * | 2013-10-17 | 2014-04-09 | 上海风雷阀门集团有限公司 | Steam regulating valve |
| CN203717980U (en) * | 2014-01-03 | 2014-07-16 | 东方电气集团东方汽轮机有限公司 | Steam turbine high-pressure main steam regulating valve |
| CN204312141U (en) * | 2014-12-18 | 2015-05-06 | 浙江华元汽轮机械有限公司 | A kind of embedded valve beam assembly structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983568A (en) * | 2019-12-16 | 2021-06-18 | 上海电气电站设备有限公司 | Steam turbine lifting plate valve structure |
| CN111305913A (en) * | 2020-04-01 | 2020-06-19 | 杭州汽轮机股份有限公司 | Regulating steam valve, steam turbine and regulating steam valve opening method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104481599B (en) | 2016-01-27 |
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