CN201373113Y - Bell-type regulating steam valve - Google Patents
Bell-type regulating steam valve Download PDFInfo
- Publication number
- CN201373113Y CN201373113Y CN200920116693U CN200920116693U CN201373113Y CN 201373113 Y CN201373113 Y CN 201373113Y CN 200920116693 U CN200920116693 U CN 200920116693U CN 200920116693 U CN200920116693 U CN 200920116693U CN 201373113 Y CN201373113 Y CN 201373113Y
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- Prior art keywords
- valve
- disc
- rod
- valve disc
- seat
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- Expired - Lifetime
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- Lift Valve (AREA)
Abstract
The utility model discloses a bell-type regulating steam valve, which mainly comprises a valve casing and a valve seat. The steam valve is characterized in that the upper end of the valve casing is sealed by a valve cover, a valve rod passing through the valve cover is connected with a valve disc inside the valve casing, the bell-shaped valve disc matches with the valve seat, a guiding cone is disposed on the valve seat, and the guiding cone is engagingly connected with the valve disc and packed into a cavity inside the valve disc. Further, the process of the valve disc is controlled through the engagement of the bell -type valve disc and the guiding cone placed in the cavity inside the valve disc, thereby effectively reducing the vibration of the valve disc and simultaneously decreasing longitudinal impact on the valve disc caused by steam flow. In the structure of the bell-type regulating steam valve, three ribbed plates extend from the valve seat too support the guiding cone on the upper portion of the valve seat, and the valve disc moves up and down to alter the opening degree so as to control flow rate. Besides, the inner cavity of the valve disc is filled with the guiding cone, thereby preventing the steam flow longitudinally impacting the valve disc. The vibration of the whole valve is improved because the valve rod has no vibration or decreased vibration. In addition, the valve rod can be thickened when in manufacture, and a corresponding joint bearing is increased, thereby enhancing intensity.
Description
Technical field
The utility model relates to a kind of adjusting steam valve, particularly a kind of bell type adjusting steam valve that is used to control steam flow.
Background technique
It is simple in structure to regulate steam valve at present, when valve turns down, when steam flow diminishes, tend to cause the valve disc shake, particularly be used in the adjusting steam valve on second and third expansion arc of control on the steam turbine, the shake of valve disc tends to cause that valve disc bump valve casing, valve seat have influence on the working life of regulating steam valve, the shake of valve disc simultaneously also can cause the vibrations of valve rod, and have influence on lever and oil engine by pull bar, the permanent oil engine that so can cause is controlled the flow that the generation error causes controlling accurately steam to valve disc, influences this turbine work.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure for the deficiency that solves above-mentioned technology, and the valve disc shake is few, simultaneously the valve disc bell type adjusting steam valve little to other component affects.
In order to achieve the above object, the bell type adjusting steam valve of the utility model design, mainly comprise valve casing and valve seat, the valve casing upper end is sealed by valve gap, valve rod passes valve gap at the inner valve disc that connects of valve casing, and valve disc is the bell jar type and cooperates with valve seat that valve seat is provided with flow deflecting cone, flow deflecting cone and valve disc are connected, and are filled in the valve disc internal cavities.Valve disc by the bell jar type and the stroke of cooperation control valve disc that is arranged on the flow deflecting cone of valve disc internal cavities make valve disc along with the outer side shifting of flow deflecting cone effectively reduces the shake of valve disc, also reduce the impact of collision of steam flow to valve disc simultaneously.
In order to reduce the influence of valve disc, be Spielpassung between valve rod and the valve disc, and valve rod pass valve disc and is connected with flow deflecting cone by guide sleeve to valve rod.Also can be provided with the gusset that supports flow deflecting cone and play steady air flow on the valve seat, make steam flow be not easy to occur whirlpool when flowing, not rotate thereby can not drive valve disc.
In order to make control unit can control moving of valve disc, thereby reach the purpose of control steam flow amount, be connected with pull bar on the valve rod, pull bar is provided with rod head, rod head is connected with joint shaft bearing, the joint shaft bearing lever that has been connected through the hinge, the other end hinge of lever is connected on the oil engine, and the lever middle part is connected with stand hinge on being fixed on valve casing; Valve gap top is supported with bearing by double-screw bolt, be fixed with spring seat on the valve rod, be provided with spring between bearing and the spring seat, be provided with the adjustment packing ring between spring seat and the valve rod, by adjusting washer (disk) can be suitable the pressure of control spring, with the purpose of the pressure of controlled valve rod.The gap is fixed with Expanded graphite seal ring, lining and pilot sleeve by gland nut between valve rod and the valve gap.Adjustable in case of necessity seamless jack panel reduces, stops valve stem leakoff, and pilot sleeve has also increased the damping that valve rod moves up and down simultaneously, has further reduced the shake of valve rod.Also can be provided with the cooling steam hole on the valve disc.The effect in cooling steam hole is a unit operation and under the situation that this modulating valve cuts out, can enter the expansion arc of back by some steam, thereby prevents that this expansion arc is overheated.For the unit of middle gland leak-off amount, there is not the cooling steam hole on the valve disc greater than required cooling flow.
The resulting bell type adjusting steam valve of the utility model, the similar bell jar of valve disc tips upside down on the valve seat, and valve seat bears the flow deflecting cone that three gussets support top, changes the control of aperture realization to flow by moving up and down of valve disc.The diversed awl of valve disc inner chamber is filled, and stops the impact of collision of air-flow to valve disc.Three muscle on the valve seat are not easy to form whirlpool when making air current flow, thereby can not drive the valve disc rotation, valve rod yet do not impact.In case during the valve disc shake, because valve disc and valve rod adopt big gap, it can not drive and then shake of valve rod.It is meeting and valve seat generation collision only, and valve disc is light, and valve seat is heavy, can not bring destructive the damage.The valve rod lower end adds damping, helps to improve the valve rod jitter conditions.Valve rod is not shaken, or blurring reduction, thereby has improved the shake of whole valve yet.Can also be during the manufacturing with the valve rod overstriking, the corresponding joint bearing also strengthens, and improves intensity.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation.
Wherein lever 1, oil engine 2, support 3, valve casing 4, valve seat 5, guide sleeve 6, valve disc 7, valve rod 8, pilot sleeve 9, lining 10, seal ring 11, valve gap 12, gland nut 13, double-screw bolt 14, adjust packing ring 15, spring seat 16, spring 17, rod head 18, pull bar 19, bearing 20, joint shaft bearing 21, gusset 22, flow deflecting cone 23, cooling steam hole 24.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment 1
As shown in Figure 1, the bell type adjusting steam valve that present embodiment is described, mainly comprise valve casing 4, valve casing 4 upper ends are by valve gap 12 sealings, valve rod 8 passes valve gap 12 at the inner valve discs 7 that connect of valve casing 4, and valve disc 7 is the bell jar type and cooperates with valve seat 5 that valve seat 5 is provided with flow deflecting cone 23, the profile of flow deflecting cone 23 cooperates with valve disc 7, is filled in valve disc 7 internal cavities.Be Spielpassung between valve rod 8 and the valve disc 7, and valve rod 8 pass valve disc 7 and is connected with flow deflecting cone 23 by guide sleeve 6.Be evenly equipped with three gussets 22 that support flow deflecting cone 23 and play steady air flow on the valve seat 5.Cylinder lever connecting rod 19 on the valve rod 8, and rod head 18 is connected with lever 1 one end hinges by joint shaft bearing 21, and the other end hinge of lever 1 is connected on the oil engine 2, and lever 1 middle part hinge is connected on the support 3 as fulcrum, and support 3 is fixedly connected on the valve casing 4; Valve gap 12 tops are supported with bearing 20 by double-screw bolt 14, and bearing 20 and be fixed between the spring seat 16 on the valve rod 8 and be provided with spring 17 is provided with between spring seat 16 and the valve rod 8 and adjusts packing ring 15.The gap is fixed with Expanded graphite seal ring 11, lining 10 and pilot sleeve 9 by gland nut 13 between valve rod 8 and the valve gap 12.While is different according to cylinder structure and unit general arrangement requirement, regulate three kinds of corresponding modification are arranged on steam valve shell 4 structures: a kind of is that valve casing 4 is cast as one with cylinder, another kind is to transfer valve that independent valve casing 4 is arranged, and the outlet(discharge) flange of valve casing 4 is connected with cylinder, the third is to regulate steam valve to be arranged in outside the turbine body, link to each other with pipeline between the inlet/outlet of valve casing 4 and the cylinder, interface can be a flange type, also can adopt welding type.Any form no matter, the structure of modulating valve and diagram are roughly the same.
During work, under static state, the pretightening force of spring 17 is crushed on the valve seat 5 valve disc 7 by spring seat 16, adjustment packing ring 15 and valve rod 8.Because an end of lever 1 is connected with oil engine 2 piston rods, the other end is by joint shaft bearing 21, pull bar 19 and rod head 18 etc. are connecting valve rod 8, so when oil engine is pressed control unit instruction action, valve disc just produces corresponding lifting action, promptly according to the instruction of oil engine 2 suitable open, close the adjusting steam valve, perhaps increase or dwindle by regulating the steam flow amount of steam valve.
Embodiment 2
The described bell type adjusting steam valve of present embodiment can be provided with cooling steam hole 24 on its described valve disc 7.
Claims (9)
1. bell type adjusting steam valve, mainly comprise valve casing (4) and valve seat (5), valve casing (4) upper end is sealed by valve gap (12), valve rod (8) passes valve gap (12) at the inner valve disc (7) that connects of valve casing (4), it is characterized in that valve disc (7) cooperates for the bell jar type and with valve seat (5), valve seat (5) is provided with flow deflecting cone (23), and flow deflecting cone (23) is connected with valve disc (7).
2. bell type adjusting steam valve according to claim 1 is characterized in that between described valve rod (8) and the valve disc (7) being Spielpassung, and valve rod (8) passes valve disc (7) and is connected with flow deflecting cone (23) by guide sleeve (6).
3. bell type adjusting steam valve according to claim 1 and 2 is characterized in that described valve seat (5) is provided with the gusset (22) that supports flow deflecting cone (23) and play steady air flow.
4. bell type adjusting steam valve according to claim 1 and 2, it is characterized in that being connected with on the described valve rod (8) pull bar (19), pull bar (19) is provided with rod head (18), rod head (18) is connected with joint shaft bearing (21), joint shaft bearing (21) lever (1) that has been connected through the hinge, the other end hinge of lever (1) is connected on the oil engine (2), and lever (1) middle part is connected with support (3) hinge on being fixed on valve casing (4); Valve gap (12) top is supported with bearing (20) by double-screw bolt (14), is fixed with spring seat (16) on the valve rod (8), is provided with spring (17) between bearing (20) and the spring seat (16), is provided with between spring seat (16) and the valve rod (8) to adjust packing ring (15); The gap is fixed with Expanded graphite seal ring (11), lining (10) and pilot sleeve (9) by gland nut (13) between valve rod (8) and the valve gap (12).
5. bell type adjusting steam valve according to claim 3, it is characterized in that being connected with on the described valve rod (8) pull bar (19), pull bar (19) is provided with rod head (18), rod head (18) is connected with joint shaft bearing (21), joint shaft bearing (21) lever (1) that has been connected through the hinge, the other end hinge of lever (1) is connected on the oil engine (2), and lever (1) middle part is connected with support (3) hinge on being fixed on valve casing (4); Valve gap (12) top is supported with bearing (20) by double-screw bolt (14), is fixed with spring seat (16) on the valve rod (8), is provided with spring (17) between bearing (20) and the spring seat (16), is provided with between spring seat (16) and the valve rod (8) to adjust packing ring (15); The gap is fixed with Expanded graphite seal ring (11), lining (10) and pilot sleeve (9) by gland nut (13) between valve rod (8) and the valve gap (12).
6. bell type adjusting steam valve according to claim 1 and 2 is characterized in that described valve disc (7) is provided with cooling steam hole (24).
7. bell type adjusting steam valve according to claim 3 is characterized in that described valve disc (7) is provided with cooling steam hole (24).
8. bell type adjusting steam valve according to claim 4 is characterized in that described valve disc (7) is provided with cooling steam hole (24).
9. bell type adjusting steam valve according to claim 5 is characterized in that described valve disc (7) is provided with cooling steam hole (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116693U CN201373113Y (en) | 2009-03-26 | 2009-03-26 | Bell-type regulating steam valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920116693U CN201373113Y (en) | 2009-03-26 | 2009-03-26 | Bell-type regulating steam valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373113Y true CN201373113Y (en) | 2009-12-30 |
Family
ID=41499194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920116693U Expired - Lifetime CN201373113Y (en) | 2009-03-26 | 2009-03-26 | Bell-type regulating steam valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373113Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241002A (en) * | 2011-05-23 | 2011-11-16 | 宁波李氏实业有限公司 | Wrench for reflux valve of spraying pump |
| CN102853094A (en) * | 2012-09-19 | 2013-01-02 | 重庆新泰机械有限责任公司 | Manual wedge-shaped throttle valve |
| CN104153828A (en) * | 2014-07-24 | 2014-11-19 | 中国长江动力集团有限公司 | Turbine admission regulating valve link mechanism |
| CN104314623A (en) * | 2014-10-11 | 2015-01-28 | 江苏永钢集团有限公司 | Governing valve actuating mechanism of steam turbine |
| CN105952498A (en) * | 2016-04-28 | 2016-09-21 | 中广核核电运营有限公司 | Method for handling jamming of pressure cylinder valve in steam turbine |
| 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 |
-
2009
- 2009-03-26 CN CN200920116693U patent/CN201373113Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241002A (en) * | 2011-05-23 | 2011-11-16 | 宁波李氏实业有限公司 | Wrench for reflux valve of spraying pump |
| CN102853094A (en) * | 2012-09-19 | 2013-01-02 | 重庆新泰机械有限责任公司 | Manual wedge-shaped throttle valve |
| CN104153828A (en) * | 2014-07-24 | 2014-11-19 | 中国长江动力集团有限公司 | Turbine admission regulating valve link mechanism |
| CN104153828B (en) * | 2014-07-24 | 2015-07-15 | 中国长江动力集团有限公司 | Turbine admission regulating valve link mechanism |
| CN104314623A (en) * | 2014-10-11 | 2015-01-28 | 江苏永钢集团有限公司 | Governing valve actuating mechanism of steam turbine |
| CN105952498A (en) * | 2016-04-28 | 2016-09-21 | 中广核核电运营有限公司 | Method for handling jamming of pressure cylinder valve in steam turbine |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091230 Effective date of abandoning: 20090326 |