CN204921058U - Integrated type electricity liquid executor formula steam turbine valve governing system - Google Patents
Integrated type electricity liquid executor formula steam turbine valve governing system Download PDFInfo
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- CN204921058U CN204921058U CN201520488648.8U CN201520488648U CN204921058U CN 204921058 U CN204921058 U CN 204921058U CN 201520488648 U CN201520488648 U CN 201520488648U CN 204921058 U CN204921058 U CN 204921058U
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Abstract
The utility model provides an integrated type electricity liquid executor formula steam turbine valve governing system, its main points are: it includes lever, valve and integrated type electricity liquid executor, and integrated type electricity liquid executor is fixed in the support, the fixed direction backup pad of port on the support, and the piston rod of integrated type electricity liquid executor passes the guiding hole at direction backup pad center, and the lower extreme of support passes through the hinge pin to be installed on the base, and the piston rod upper end of integrated type electricity liquid executor is articulated with the power point of lever, above -mentioned all hinge pin syntropys. The utility model discloses an actively the effect is: by integrated type electricity liquid executor as electric liquid conversion equipment, do not need outside power oil, solved the outer hourglass problem of original system power oil like this, piston rod and piston rod packing are protected to next, improve integrated type electricity liquid executor and entire system's reliability.
Description
Technical field
The utility model relates to the electrohydraulic control system regulating industrial steam turbine porthole.
Background technique
Industrial turbine acc power is little, and rotating speed is high.Current adjustment industrial steam turbine porthole open and close system (hereinafter referred to as current system) comprises controller, electric liquid conversion equipment and oil engine, electricity liquid conversion equipment and oil engine are as lever driving device, lever power point and oil engine hinged, lever resistance point and valve rod hinged, the lower end of valve rod connects spool, lever resistance point drives spool lifting, carrys out opening and closing of timing steam gate, and then controls the rotating speed of steam turbine.This control system needs independent oil sources fuel feeding, system complex; Secondly in order to movement in a curve that the tie point of compensating lever and oil engine produces, oil engine need be in swing state, at this moment the oil feed line of oil engine also swings with oil engine, the joint of such oil pipe line easily loosens, power oil is caused to leak outside, cause this system cisco unity malfunction, be very easy to breaking out of fire, cause unnecessary loss.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of integrating electro-hydraulic actuator formula steam turbine porthole regulating system, and it uses integrating electro-hydraulic actuator as lever driving device, replaces the oil engine in current system and electric liquid conversion equipment.
The purpose of this utility model is achieved in that it comprises lever, lever driving device, valve rod and spool thereof, it is characterized in that: said lever driving device is integrating electro-hydraulic actuator, integrating electro-hydraulic actuator is fixed in support, pedestal upper end mouth fixed guide dunnage, the piston rod of integrating electro-hydraulic actuator passes the pilot hole at guide support plate center, the lower end of support is arranged on base by hinge axis, the piston rod upper end of integrating electro-hydraulic actuator and the power of lever point articulated, above-mentioned all hinge axis are in the same way.
Working procedure: integrating electro-hydraulic actuator accepts 4 ~ 20mA control signal of controller, and integrating electro-hydraulic actuator piston rod moves up and down, driving lever and then drive porthole open and close.In piston rod lifting runs, the lower end of support swings around base hinge axle, the movement in a curve that compensating lever and piston rod articulating point produce, to alleviate the lateral force that piston rod bears; Simultaneously because piston rod is through the pilot hole of guide support plate, so the lateral force that piston rod bears is born by guide support plate and pilot hole thereof.
Compared with prior art, good effect of the present utility model is: by integrating electro-hydraulic actuator as lever driving device, replace original oil engine and electric liquid conversion equipment, so this system does not need external impetus oil, solve original system power oil problem of leakage; Secondly, both alleviate the lateral force that piston rod bears, again remaining lateral force had been moved to guide support plate and pilot hole thereof, so protection piston rod and rod seal, improve the reliability of integrating electro-hydraulic actuator and whole system thereof.
Accompanying drawing explanation
The utility model is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the A direction view of Fig. 1.
Fig. 3 is the plan view of 1.
Fig. 4 is the B direction view of Fig. 1.
Embodiment
In order to solve current system dynamic oil problem of leakage, the present embodiment uses integrating electro-hydraulic actuator if REXA electro-hydraulic actuator is as lever driving device, replaces the oil engine in current system and electric liquid conversion equipment.See Fig. 2, REXA electro-hydraulic actuator 6 is fixed in the groove of the support 1 in flute profile, pedestal upper end mouth fixed guide dunnage 7, the piston rod 61 of REXA electro-hydraulic actuator passes the pilot hole at guide support plate center, said pilot hole is copper pilot hole 8, copper pilot hole is arranged on guide support plate, and the two is fixing structure; The lower end of support is arranged on base 10 by hinge axis 9,
See Fig. 1,3-4, piston rod 61 upper end of REXA electro-hydraulic actuator and the power of lever point articulated, said lever is isosceles triangle, is called triangle posture lever 2; The power point of triangle posture lever is located at the drift angle 22 of isosceles triangle, the fulcrum 21 of triangle posture lever has two, be located on two waists 23 of isosceles triangle respectively, each fulcrum is at the mid point of its waist, and the resistance point of triangle posture lever is located at the base 24 of isosceles triangle, is called resistance limit, four valve rods 3 are hinged on resistance limit successively, the length of four is successively decreased successively, and a spool 4 is fixed in the lower end of each valve rod, and above-mentioned all hinge axis in the same way.
Working procedure: when REXA electro-hydraulic actuator accepts the instruction of controller turbine speed rising, REXA electro-hydraulic actuator piston rod moves downward, the resistance limit of triangle posture lever moves upward, four valve rods and spool thereof is driven to move towards the direction leaving respective porthole 5, first leave its porthole according to the shortest valve rod and spool thereof, finally leave the order of its porthole to the longest valve rod and spool thereof, open four portholes successively, throttle flow increases, and turbine speed raises.When rotating speed reaches the rotating speed of command request, electro-hydraulic actuator is in a settling position, completes an adjustment process; When REXA electro-hydraulic actuator accepts the instruction of controller turbine speed reduction, adjustment process is contrary.
Such as power at 1MW and following industrial steam turbine, after adopting the tripod institution of distributing gas, can select and exert oneself as 18000N, stroke are the REXA electro-hydraulic actuator of 100mm, its motion speed is total travel 25mm/s, repetitive positioning accuracy is 0.1%, and the rotating speed control accuracy of steam turbine is ± 0.1%.Secondly; in groove REXA electro-hydraulic actuator 1 being fixed on support 2 and pilot hole; both the lateral force that piston rod bears had been alleviated; again remaining lateral force is moved to guide support plate and pilot hole thereof; so protection piston rod and rod seal, improve the reliability of integrating electro-hydraulic actuator and whole system thereof.
Claims (2)
1. an integrating electro-hydraulic actuator formula steam turbine porthole regulating system, it comprises lever, lever driving device, valve rod and spool thereof, it is characterized in that: said lever driving device is integrating electro-hydraulic actuator, integrating electro-hydraulic actuator is fixed in support, pedestal upper end mouth fixed guide dunnage, the piston rod of integrating electro-hydraulic actuator passes the pilot hole at guide support plate center, the lower end of support is arranged on base by hinge axis, the piston rod upper end of integrating electro-hydraulic actuator and the power of lever point articulated, above-mentioned all hinge axis are in the same way.
2., according to integrating electro-hydraulic actuator formula steam turbine porthole regulating system according to claim 1, it is characterized in that: said pilot hole is copper pilot hole, copper pilot hole is arranged on guide support plate, and the two is fixing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488648.8U CN204921058U (en) | 2015-07-09 | 2015-07-09 | Integrated type electricity liquid executor formula steam turbine valve governing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520488648.8U CN204921058U (en) | 2015-07-09 | 2015-07-09 | Integrated type electricity liquid executor formula steam turbine valve governing system |
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| Publication Number | Publication Date |
|---|---|
| CN204921058U true CN204921058U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520488648.8U Active CN204921058U (en) | 2015-07-09 | 2015-07-09 | Integrated type electricity liquid executor formula steam turbine valve governing system |
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| CN (1) | CN204921058U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041390A (en) * | 2015-07-09 | 2015-11-11 | 沈阳东北电力调节技术有限公司 | Integrated electric-hydraulic actuator type valve adjusting system for steam turbine |
-
2015
- 2015-07-09 CN CN201520488648.8U patent/CN204921058U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041390A (en) * | 2015-07-09 | 2015-11-11 | 沈阳东北电力调节技术有限公司 | Integrated electric-hydraulic actuator type valve adjusting system for steam turbine |
| CN105041390B (en) * | 2015-07-09 | 2016-07-06 | 沈阳东北电力调节技术有限公司 | Integrating electro-hydraulic actuator formula steam turbine porthole regulates system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHENYANG NAISI CONTROL TECHNOLOGY CO.,LTD. Assignor: SHENYANG NORTHEAST ELECTRIC POWER CONTROL Co.,Ltd. Contract record no.: X2023210000146 Denomination of utility model: Integrated electro-hydraulic actuator type steam turbine valve control system Granted publication date: 20151230 License type: Common License Record date: 20230927 |
|
| EE01 | Entry into force of recordation of patent licensing contract |