CN104153828A - Turbine admission regulating valve link mechanism - Google Patents
Turbine admission regulating valve link mechanism Download PDFInfo
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- CN104153828A CN104153828A CN201410354386.6A CN201410354386A CN104153828A CN 104153828 A CN104153828 A CN 104153828A CN 201410354386 A CN201410354386 A CN 201410354386A CN 104153828 A CN104153828 A CN 104153828A
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- connecting rod
- fixed
- link
- modulating valve
- spring
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Abstract
The invention relates to a turbine admission regulating valve link mechanism. Structurally, two ends of a rotary shaft are fixed to a base plate through supports and are capable of rotating; one end of a link IV is fixed to the base plate through the support, and the link IV is capable of rotating; one ends of a link I, links II and link III are fixed to the rotary shaft, the other end of the link I is connected to the piston rod of a bidirectional hydraulic cylinder through a guide connector, the piston rod penetrates the base plate, the other ends of the links II are connected to a low-pressure adjusting valve link through guide connectors, the low-pressure adjusting valve link penetrates the base plate to connect to a low-pressure adjusting valve, the initial position of the link II is distanced h meters from the link IV, and the link II contacts with the link IV after rotation to drive the link IV to rotate around the connecting point; two ends of a spring are fixed to the base plate and a spring holding disc; one end of a link V is fixed to the link IV, and the other end penetrates to the spring to connect to the spring holding disc; one end of a high-pressure adjusting valve link is fixed to the spring holding disc, and the other end is connected to a high-pressure adjusting valve. The mechanism is safe and reliable and convenient to mount and adjust.
Description
Technical field
The present invention is applicable to steam turbine field, is specifically related to steam turbine admission modulating valve linkage mechanism, is steam turbine high low pressure parameter admission adjusting control mechanism.
Background technique
Steam turbine generally adopts single steam parameter admission, and a modulating valve is set and just can controls, but when power plant is because nominal parameter steam flow deficiency, while need again to ensure unit stable output power, at this moment must extra filling.Common filling method has intergrade filling, the direct filling of main steam line, the admission respectively of two-way vapour source.Intergrade filling, steam specific volume is large, and complex structure only uses in heat recovery field; The direct filling of main steam line belongs to outer switching category, and power plant generally adopts at home, but easily causes fluctuation of load while switching.The respectively admission of two-way vapour source, commonplace abroad, domestic rarely have application.
Summary of the invention
The object of the invention is in order to improve above-mentioned technical deficiency, a kind of steam turbine admission modulating valve linkage mechanism is provided, control the admission in two kinds of vapour sources simultaneously, belong to interior switching, when switch in vapour source, load ripple disable.The present invention has safe and reliable, simple in structure, is convenient to install, overhauls and adjusts.
The present invention is mainly achieved through the following technical solutions:
Steam turbine admission modulating valve linkage mechanism, comprise connecting rod I, connecting rod II, connecting rod III, rotating shaft, connecting rod IV, bidirectional hydraulic oil cylinder, low pressure modulating valve connecting rod, connecting rod V, substrate, spring, spring tray, septum valve connecting rod, low pressure modulating valve, septum valve, guiding connector, supporting frame, it is characterized in that: rotating shaft two ends are fixed on substrate by supporting frame respectively, and can rotate; Connecting rod IV one end is fixed on substrate by another supporting frame, and can rotate around tie point O; Connecting rod I, connecting rod II, connecting rod III one end are separately fixed in rotating shaft, the connecting rod I the other end is connected with the cylinder piston rod of bidirectional hydraulic oil cylinder by guiding connector, and cylinder piston rod is through substrate, the connecting rod II the other end is connected with low pressure modulating valve connecting rod by another guiding connector, low pressure modulating valve connecting rod is connected with low pressure modulating valve through substrate, connecting rod III initial position does not contact with connecting rod IV, at a distance of h rice, connecting rod III is rotated after a segment distance and connecting rod IV one end in contact, and drivening rod IV is rotated around tie point O; Spring one end is fixed on substrate, and the other end is fixed on spring tray; Connecting rod V one end is fixed in connecting rod IV, and the other end is connected with spring tray through spring; Septum valve connecting rod one end is fixed on spring tray, and the other end is connected with septum valve.
When bidirectional hydraulic oil cylinder moves up: low pressure modulating valve is first opened, after low pressure modulating valve is opened completely, then open septum valve; When hydraulic jack moves down: connecting rod III and connecting rod IV are thrown off automatically, septum valve is closed automatically by the Compress Spring power on substrate, and when oil cylinder piston moves to final position, low pressure modulating valve is closed completely.
Described connecting rod I, connecting rod II, connecting rod III link together by rotating shaft, and mutual angle immobilizes.
Described connecting rod IV is rotated around tie point O; Connecting rod IV connects with connecting rod V by hinge; Connecting rod IV is driven by connecting rod III, in the time of initial position, does not contact each other.
Described connecting rod III and rotating shaft are fixed, and fixed position is by the angle of key adjustment and connecting rod I.
Described connecting rod II and rotating shaft are fixed, and fixed position is by the angle of key adjustment and connecting rod I.
The present invention is applicable to the Steam Turhine Adjustment control mechanism in two kinds of admission vapour sources, safe and reliable, is convenient to install adjust.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is plan view of the present invention.
Fig. 3 is side view of the present invention.
Fig. 4 is opposite side view of the present invention.
Fig. 5 is schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, steam turbine admission modulating valve linkage mechanism of the present invention, comprise connecting rod I 1, connecting rod II 2, connecting rod III 3, rotating shaft 10, connecting rod IV 4, bidirectional hydraulic oil cylinder 11, low pressure modulating valve connecting rod 6, connecting rod V 7, substrate 8, spring 18, spring tray 17, septum valve connecting rod 9, low pressure modulating valve 13, septum valve 12, guiding connector 14, rotating shaft support frame 15, it is characterized in that: rotating shaft 10 two ends are fixed on substrate 8 by supporting frame 15 respectively, and can self rotate, connecting rod IV 4 one end are fixed on substrate 8 by another supporting frame 15, and can rotate around tie point O, connecting rod I 1, connecting rod II 2, connecting rod III 3 one end are separately fixed in rotating shaft 10, connecting rod I 1 the other end is connected with the cylinder piston rod 5 of bidirectional hydraulic oil cylinder 11 by guiding connector 14, between guiding connector 14 and cylinder piston rod 5, be connected by nut 16, and cylinder piston rod 5 is through substrate 8, connecting rod II 2 the other ends are connected with low pressure modulating valve connecting rod 6 by another guiding connector 14, between guiding connector 14 and low pressure modulating valve connecting rod 6, be connected by another nut 16, low pressure modulating valve connecting rod 6 is connected with low pressure modulating valve 13 through substrate 8, connecting rod III 3 initial positions and connecting rod IV 4 are at a distance of a segment distance h rice, h value is adjusted according to actual conditions, connecting rod III 3 is rotated after a segment distance h rice and connecting rod IV 4 one end in contact, and can drivening rod IV 4 rotate around tie point O, spring 18 one end are fixed on substrate 8, and the other end is fixed on spring tray 17, connecting rod V 7 one end are fixed in connecting rod IV 4, and the other end is connected with spring tray 17 through spring 18, septum valve connecting rod 9 one end are fixed on spring tray 17 by another nut 16, and the other end connects mutually with septum valve 12.Described connecting rod I 1, connecting rod II 2, connecting rod III 3 link together by rotating shaft 10, and mutual angle immobilizes, and described connecting rod 3 is fixing with rotating shaft 10, and fixed position is by the angle of key adjustment and connecting rod I 1.Described connecting rod II 2 is fixing with rotating shaft 10, and fixed position is by the angle of key adjustment and connecting rod I 1.
Described connecting rod IV 4 one end are around tie point O rotation, and connecting rod IV 4 connects with connecting rod V 7 by hinge, and connecting rod IV is driven by connecting rod III, in the time of initial position, does not contact each other.
When bidirectional hydraulic oil cylinder moves up: low pressure modulating valve is first opened, after low pressure modulating valve is opened completely, then open septum valve; When hydraulic jack moves down: connecting rod III and connecting rod IV 4 are thrown off automatically, septum valve is closed automatically by the Compress Spring power on substrate, and when oil cylinder piston moves to final position, low pressure modulating valve is closed completely.
When initial position: the piston of bidirectional hydraulic oil cylinder 11 is at lowermost end, low pressure modulating valve 13, septum valve 13 be (spring 18 is provided with pretightening force) in the closed position all, do not leak vapour in order to ensure tight closing, closed position can be adjusted by nut 16.When piston moves up: the piston that ensures bidirectional hydraulic oil cylinder 11 by guiding connector 14 does not swing, and drivening rod I 1 is rotated around rotating shaft 10, rotating shaft 10 rotarily drives connecting rod II 2, connecting rod III 3 is rotated together, the valve disc of low pressure modulating valve 13 is slowly opened, low pressure steam has entered steam turbine, the piston of bidirectional hydraulic oil cylinder 11 continues to move up, until low pressure modulating valve 13 is opened completely, now and then the connecting rod III 3 of rotation has moved one section of idle stroke h rice together, now connecting rod III 3 just contacts with connecting rod IV 4, if low pressure steam parameter meets steam turbine requirement, the piston of bidirectional hydraulic oil cylinder 11 just stops up having moved, if now steam turbine is exerted oneself and still be can not meet burden requirement, the piston of bidirectional hydraulic oil cylinder 11 need upwards continue mobile, drivening rod IV 4 is rotated counterclockwise around fulcrum O, mention the valve disc of septum valve 12, spring 18 continues compressed, high pressure steam has entered steam turbine along valve disc, when the piston of bidirectional hydraulic oil cylinder 11 moves to the upper end position of oil cylinder, septum valve 12 is opened completely.In the time need to reducing the load of steam turbine, reduce steam flow, when the piston of bidirectional hydraulic oil cylinder 11 starts to move down: the valve disc of connecting rod IV 4, septum valve 12 is under the effect of spring 18 power, self-return, when septum valve 12 moves down certain distance along with the piston of bidirectional hydraulic oil cylinder 11, septum valve 12 is closed automatically.After septum valve 12 is closed, low pressure modulating valve 13 just starts slowly to close, and closing of the valve disc of low pressure modulating valve 13 advocates to convert from the downward hydraulic coupling of the piston of bidirectional hydraulic oil cylinder 11.So iterative cycles, has just formed the modulating valve connecting rod control mechanism in two kinds of vapour sources.
Claims (5)
1. steam turbine admission modulating valve linkage mechanism, comprise connecting rod I, connecting rod II, connecting rod III, rotating shaft, connecting rod IV, bidirectional hydraulic oil cylinder, low pressure modulating valve connecting rod, connecting rod V, substrate, spring, spring tray, septum valve connecting rod, low pressure modulating valve, septum valve, guiding connector, supporting frame, it is characterized in that: rotating shaft two ends are fixed on substrate by supporting frame respectively, and can rotate; Connecting rod IV one end is fixed on substrate by another supporting frame, and can rotate around tie point O; Connecting rod I, connecting rod II, connecting rod III one end are separately fixed in rotating shaft, the connecting rod I the other end is connected with the cylinder piston rod of bidirectional hydraulic oil cylinder by guiding connector, and cylinder piston rod is through substrate, the connecting rod II the other end is connected with low pressure modulating valve connecting rod by another guiding connector, low pressure modulating valve connecting rod is connected with low pressure modulating valve through substrate, connecting rod III initial position does not contact with connecting rod IV, at a distance of h rice, connecting rod III is rotated after a segment distance and connecting rod IV one end in contact, and drivening rod IV is rotated around tie point O; Spring one end is fixed on substrate, and the other end is fixed on spring tray; Connecting rod V one end is fixed in connecting rod IV, and the other end is connected with spring tray through spring; Septum valve connecting rod one end is fixed on spring tray, and the other end is connected with septum valve.
2. steam turbine admission modulating valve linkage mechanism according to claim 1, is characterized in that: described connecting rod I, connecting rod II, connecting rod III link together by rotating shaft, and mutual angle immobilizes.
3. steam turbine admission modulating valve linkage mechanism according to claim 1, is characterized in that: described connecting rod IV is rotated around tie point O; Connecting rod IV connects with connecting rod V by hinge; Connecting rod IV is driven by connecting rod III, in the time of initial position, does not contact each other.
4. steam turbine admission modulating valve linkage mechanism according to claim 2, it is characterized in that: described connecting rod III and rotating shaft are fixed, and fixed position is by the angle of key adjustment and connecting rod I.
5. steam turbine admission modulating valve linkage mechanism according to claim 2, it is characterized in that: described connecting rod II and rotating shaft are fixed, and fixed position is by the angle of key adjustment and connecting rod I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354386.6A CN104153828B (en) | 2014-07-24 | 2014-07-24 | Turbine admission regulating valve link mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354386.6A CN104153828B (en) | 2014-07-24 | 2014-07-24 | Turbine admission regulating valve link mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104153828A true CN104153828A (en) | 2014-11-19 |
| CN104153828B CN104153828B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410354386.6A Active CN104153828B (en) | 2014-07-24 | 2014-07-24 | Turbine admission regulating valve link mechanism |
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| CN (1) | CN104153828B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043330A (en) * | 2019-05-05 | 2019-07-23 | 江苏源生源动力科技有限公司 | A kind of steam turbine with safety is into the steam control valve institution of distributing gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5445403A (en) * | 1977-09-17 | 1979-04-10 | Toshiba Corp | Steam turbine controlling apparatus |
| JPS58210304A (en) * | 1982-05-31 | 1983-12-07 | Hitachi Ltd | Separately-placed regulating valve tester |
| CN2167192Y (en) * | 1993-03-11 | 1994-06-01 | 樊县圃 | Pneumatic executive mechanism for speed adjustment for steam turbine |
| CN201373113Y (en) * | 2009-03-26 | 2009-12-30 | 杭州汽轮机股份有限公司 | Bell-type regulating steam valve |
| CN102022142A (en) * | 2009-09-23 | 2011-04-20 | 上海电气电站设备有限公司 | Built-in steam extraction controlling and regulating valve set for steam turbine |
| CN204113359U (en) * | 2014-07-24 | 2015-01-21 | 中国长江动力集团有限公司 | Steam turbine admission modulating valve linkage mechanism |
-
2014
- 2014-07-24 CN CN201410354386.6A patent/CN104153828B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5445403A (en) * | 1977-09-17 | 1979-04-10 | Toshiba Corp | Steam turbine controlling apparatus |
| JPS58210304A (en) * | 1982-05-31 | 1983-12-07 | Hitachi Ltd | Separately-placed regulating valve tester |
| CN2167192Y (en) * | 1993-03-11 | 1994-06-01 | 樊县圃 | Pneumatic executive mechanism for speed adjustment for steam turbine |
| CN201373113Y (en) * | 2009-03-26 | 2009-12-30 | 杭州汽轮机股份有限公司 | Bell-type regulating steam valve |
| CN102022142A (en) * | 2009-09-23 | 2011-04-20 | 上海电气电站设备有限公司 | Built-in steam extraction controlling and regulating valve set for steam turbine |
| CN204113359U (en) * | 2014-07-24 | 2015-01-21 | 中国长江动力集团有限公司 | Steam turbine admission modulating valve linkage mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043330A (en) * | 2019-05-05 | 2019-07-23 | 江苏源生源动力科技有限公司 | A kind of steam turbine with safety is into the steam control valve institution of distributing gas |
| CN110043330B (en) * | 2019-05-05 | 2021-08-03 | 江苏源生源动力科技有限公司 | Steam turbine steam inlet regulating valve steam distribution mechanism with safety |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104153828B (en) | 2015-07-15 |
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