CN204113359U - Steam turbine admission modulating valve linkage mechanism - Google Patents
Steam turbine admission modulating valve linkage mechanism Download PDFInfo
- Publication number
- CN204113359U CN204113359U CN201420410135.0U CN201420410135U CN204113359U CN 204113359 U CN204113359 U CN 204113359U CN 201420410135 U CN201420410135 U CN 201420410135U CN 204113359 U CN204113359 U CN 204113359U
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- China
- Prior art keywords
- connecting rod
- fixed
- modulating valve
- substrate
- low pressure
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- Withdrawn - After Issue
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Abstract
The utility model relates to steam turbine admission modulating valve linkage mechanism, and structure is that rotating shaft two ends are fixed on substrate by supporting frame, can rotate; Connecting rod IV one end is fixed on substrate by supporting frame, can rotate; Connecting rod I, connecting rod II, connecting rod III one end are separately fixed in rotating shaft, connecting rod I the other end is connected by the cylinder piston rod of guiding connector with bidirectional hydraulic oil cylinder, and cylinder piston rod is through substrate, connecting rod II the other end is connected with low pressure modulating valve connecting rod by guiding connector, low pressure modulating valve connecting rod is connected with low pressure modulating valve through substrate, connecting rod III initial position and connecting rod IV are at a distance of h rice, and contact with connecting rod IV after connecting rod III rotates, drivening rod IV rotates around tie point; Both ends of the spring is fixed on substrate and spring tray; Connecting rod V one end is fixed on 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.The utility model is safe and reliable, is convenient to mounting and adjusting.
Description
Technical field
The utility model 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, arranges a modulating valve and just can control, but when power plant is because nominal parameter steam flow is not enough, need again guarantee unit stable output power simultaneously, 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, 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 when switching.The admission respectively of two-way vapour source, commonplace abroad, domestic rarely have application.
Summary of the invention
The purpose of this utility model is to improve above-mentioned technical deficiency, provides a kind of steam turbine admission modulating valve linkage mechanism, controls the admission in two kinds of vapour sources simultaneously, belongs to interior switching, when vapour source switches, and load ripple disable.The utility model has safe and reliable, and structure is simple, is convenient to install, overhaul and adjustment.
The utility model 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 respectively by supporting frame, 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, connecting rod I the other end is connected by the cylinder piston rod of guiding connector with bidirectional hydraulic oil cylinder, and cylinder piston rod is through substrate, 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 rotate after a segment distance with connecting rod IV end thereof contacts, and drivening rod IV rotates 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 on 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 compression spring force 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 are linked together by rotating shaft, and mutual angle immobilizes.
Described connecting rod IV rotates around tie point O; Connecting rod IV is connected with connecting rod V by hinge; Connecting rod IV is driven by connecting rod III, when initial position, does not contact each other.
Described connecting rod III is fixed with rotating shaft, and fixed position is by the angle of key adjustment with connecting rod I.
Described connecting rod II is fixed with rotating shaft, and fixed position is by the angle of key adjustment with connecting rod I.
The utility model is applicable to the Steam Turhine Adjustment control mechanism in two kinds of admission vapour sources, safe and reliable, is convenient to mounting and adjusting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is plan view of the present utility model.
Fig. 3 is side view of the present utility model.
Fig. 4 is opposite side view of the present utility model.
Fig. 5 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, the utility model steam turbine admission modulating valve linkage mechanism, 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 fixing on the substrate 8 respectively by supporting frame 15, and can self rotate, connecting rod IV 4 one end is fixing on the 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 is 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, be connected by nut 16 between guiding connector 14 with cylinder piston rod 5, and cylinder piston rod 5 is through substrate 8, connecting rod II 2 the other end is connected with low pressure modulating valve connecting rod 6 by another guiding connector 14, be connected by another nut 16 between guiding connector 14 with low pressure modulating valve connecting rod 6, low pressure modulating valve connecting rod 6 is connected with low pressure modulating valve 13 through substrate 8, connecting rod III 3 initial position and connecting rod IV 4 are at a distance of a segment distance h rice, h value adjusts according to actual conditions, with connecting rod IV 4 end thereof contacts after connecting rod III 3 rotation one segment distance h rice, and can rotate around tie point O by drivening rod IV 4, spring 18 one end is fixing on the substrate 8, and the other end is fixed on spring tray 17, connecting rod V 7 one end is fixed on connecting rod IV 4, and the other end is connected with spring tray 17 through spring 18, septum valve connecting rod 9 one end is 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 are linked together by rotating shaft 10, and mutual angle immobilizes, and described connecting rod 3 is fixed with rotating shaft 10, and fixed position is by the angle of key adjustment with connecting rod I 1.Described connecting rod II 2 is fixed with rotating shaft 10, and fixed position is by the angle of key adjustment with connecting rod I 1.
Described connecting rod IV 4 one end rotates around tie point O, and connecting rod IV 4 is connected with connecting rod V 7 by hinge, and connecting rod IV is driven by connecting rod III, when 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 compression spring force on substrate, and when oil cylinder piston moves to final position, low pressure modulating valve is closed completely.
During initial position: the piston of bidirectional hydraulic oil cylinder 11 is at lowermost end, low pressure modulating valve 13, septum valve 13 (spring 18 is provided with pretightening force) all in the closed position, do not leak vapour in order to ensure tight closing, closed position can be adjusted by nut 16.When piston moves up: ensure that the piston of bidirectional hydraulic oil cylinder 11 does not swing by guiding connector 14, and drivening rod I 1 rotates around rotating shaft 10, rotating shaft 10 rotarily drives connecting rod II 2, connecting rod III 3 rotates together, the valve disc of low pressure modulating valve 13 is slowly opened, low pressure steam enters steam turbine, the piston of bidirectional hydraulic oil cylinder 11 continues to move up, until low pressure modulating valve 13 is opened completely, the connecting rod III 3 now and then rotated together has moved one section of idle stroke h rice, 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 moving, 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 to be compressed, high pressure steam enters 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.When needing the load reducing steam turbine, namely steam flow is reduced, 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, septum valve 12 along with the piston of bidirectional hydraulic oil cylinder 11 move down certain distance time, septum valve 12 is closed automatically.After septum valve 12 is closed, low pressure modulating valve 13 just starts slowly to close, and the closing forces of the valve disc of low pressure modulating valve 13 mainly converts from the hydraulic coupling that the piston of bidirectional hydraulic oil cylinder 11 is downward.Iterative cycles like this, just constitutes 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 respectively by supporting frame, 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, connecting rod I the other end is connected by the cylinder piston rod of guiding connector with bidirectional hydraulic oil cylinder, and cylinder piston rod is through substrate, 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 rotate after a segment distance with connecting rod IV end thereof contacts, and drivening rod IV rotates 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 on 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 are linked 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 rotates around tie point O; Connecting rod IV is connected with connecting rod V by hinge; Connecting rod IV is driven by connecting rod III, when initial position, does not contact each other.
4. steam turbine admission modulating valve linkage mechanism according to claim 2, is characterized in that: described connecting rod III is fixed with rotating shaft, and fixed position is by the angle of key adjustment with connecting rod I.
5. steam turbine admission modulating valve linkage mechanism according to claim 2, is characterized in that: described connecting rod II is fixed with rotating shaft, and fixed position is by the angle of key adjustment with connecting rod I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420410135.0U CN204113359U (en) | 2014-07-24 | 2014-07-24 | Steam turbine admission modulating valve linkage mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420410135.0U CN204113359U (en) | 2014-07-24 | 2014-07-24 | Steam turbine admission modulating valve linkage mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113359U true CN204113359U (en) | 2015-01-21 |
Family
ID=52330684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420410135.0U Withdrawn - After Issue CN204113359U (en) | 2014-07-24 | 2014-07-24 | Steam turbine admission modulating valve linkage mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-07-24 CN CN201420410135.0U patent/CN204113359U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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: 20150121 Effective date of abandoning: 20150715 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20150715 |
|
| RGAV | Abandon patent right to avoid regrant |