CN205383125U - Quiet leaf actuating mechanism synchronous control system of TRT - Google Patents
Quiet leaf actuating mechanism synchronous control system of TRT Download PDFInfo
- Publication number
- CN205383125U CN205383125U CN201620118004.4U CN201620118004U CN205383125U CN 205383125 U CN205383125 U CN 205383125U CN 201620118004 U CN201620118004 U CN 201620118004U CN 205383125 U CN205383125 U CN 205383125U
- Authority
- CN
- China
- Prior art keywords
- valve
- control
- hydraulic
- control system
- oil cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a quiet leaf actuating mechanism synchronous control system of TRT, include the electric liquid servo who constitutes by hydraulic system and control system, hydraulic system's pressure oil oil inlet is provided with servovalve no. 1, servovalve no. 2, synchronous valve, hand -operated direction valve respectively and takes secondary handle magenetic exchange valve, and wherein servovalve, hydraulically controlled check valve, hydro -cylinder position sensor and control system have constituteed hydro -cylinder automatic control return circuit, synchronous valve, pilot operated directional control valve, hydraulic pressure are locked, are taken secondary handle magenetic exchange valve and control system to constitute hydro -cylinder manual control return circuit, switch through the hand -operated direction valve between hydro -cylinder automatic control return circuit and the hydro -cylinder manual control return circuit. The utility model discloses can guarantee 2 hydro -cylinder synchronous operation, can set up three kind automatic, soft manual and hard control mode, guarantee the quiet leaf system security of TRT and effectively move, control system electric elements and servo execute component are whole to adopt blast -proof design, has thoroughly solved the potential safety hazard that exists in the former system.
Description
Technical field
This utility model relates to the stator blade hydraulic control system of blast-furnace top gas recovery turbine generator (TRT), particularly relates to a kind of TRT stator blade actuator synchronous control system.
Background technology
Blast-furnace top gas recovery turbine generator (TRT) is the pressure energy and heat energy that utilize the side-product top gas of blast furnace process to have, coal gas is made to be done work by turbo-expander, it is translated into mechanical energy, then is the device of electric energy by changes mechanical energy.Electrohydraulic servo-controlling system is in TRT device, belong to the subsystem of one of eight big systems, the systems such as it realizes the opening of TRT according to the instruction of master control room, stop, rotating speed controls, power controls, furnace top pressure and process detection control, function above controls to be finally reflected on the rotating speed controlling turbine, namely to control the quiet leaf divergence of turbine.Its operation principle is the command signal sent by robot control system(RCS), in servo controller compared with the actual position signal of oil cylinder, after becoming error signal amplification, sending into electrohydraulic servo valve, the signal of telecommunication is transformed into hydraulic fluid flow rate and promotes cylinder movement by servo valve according to a certain percentage, position sensor the feedback signal sent constantly changes, until equal with command signal time, oil cylinder stop motion, is namely parked on the position specified, and makes turbine stator blade stable in this aperture.
What existing electrohydraulic servo-controlling system adopted is that a servo valve exports a road oil circuit control, then two-way oil circuit branch road it is divided into drive control two set cylinder action respectively, it controls detection is also that the position sensor joined by a road binders cylinder completes closed loop detection control, and another road binders cylinder is passive servo-actuated driving.In actual applications, because the reasons such as fluid pressure line resistance, mechanical load be uneven make two set oil cylinder stroke actions of hydraulic system asynchronous, and the huge machinery torsion long term of the asynchronous generation of oil cylinder will cause mechanical failure in unit stator blade frame for movement, affect the service life of equipment, and blast furnace and top pressure power generation unit are formed security threat.
Summary of the invention
This utility model provides a kind of TRT stator blade actuator synchronous control system, adopts 2 servo valves to control 2 oil cylinders respectively, it is ensured that oil cylinder synchronous operation；Arrange oil cylinder automatically control, the soft Non-follow control of oil cylinder and oil cylinder three kinds of duties of hard Non-follow control, it is ensured that system safely and effectively run and can improve operational efficiency, prolongation system service life；Control system electrical element and servo executive component all adopts Explosion-proof Design, thoroughly solve the potential safety hazard that the coal gas region electrical equipment existed in original system is not explosion-proof.
In order to achieve the above object, this utility model realizes by the following technical solutions:
A kind of TRT stator blade actuator synchronous control system, including the electrohydraulic servo system being made up of hydraulic system and control system；
The pressure oil inflow pipeline of described hydraulic system is respectively arranged with servo valve one, servo valve two, synchronous valve, hand-operated direction valve and band assist handle solenoid directional control valve, wherein:
2 actuator ports of servo valve one connect rod chamber and the rodless cavity of oil cylinder one respectively through hydraulic control one-way valve I mono-and hydraulic control one-way valve I bis-, and the position sensor one that oil cylinder one is installed connects servo valve one by control system；2 actuator ports of servo valve two connect rod chamber and the rodless cavity of oil cylinder two respectively through hydraulic control one-way valve II mono-and hydraulic control one-way valve II bis-, and the position sensor two that oil cylinder two is installed connects servo valve two by control system；Hydraulic control one-way valve I mono-, hydraulic control one-way valve I bis-, hydraulic control one-way valve II mono-, hydraulic control one-way valve II bis-control port be connected with hand-operated direction valve respectively；Above section collectively constitutes oil cylinder automatic control loop；
Synchronous valve connects hydraulic lock one respectively through pilot operated directional control valve one, hydraulic lock two is connected by pilot operated directional control valve two, 2 check valves of hydraulic lock one are connected in parallel on the in-line before oil cylinder one and on oil return line respectively, and 2 check valves of hydraulic lock two are connected in parallel on the in-line before oil cylinder two and on oil return line respectively；Pilot operated directional control valve one and pilot operated directional control valve two are respectively through band assist handle solenoid directional control valve connection control system；Each portion collectively constitutes oil cylinder manual control circuit above；
Hand-operated direction valve is provided with trigger button, triggers ammonium button and is connected with control system；
Described control system is made up of ALU, signal output module, signal adapter, anti-explosion touch screen and acousto-optic warning unit, being between ALU and signal output module, anti-explosion touch screen and be bi-directionally connected, signal adapter is connected with ALU and signal output module respectively；Signal output module additionally connects hydraulic system execution and feedback element and acousto-optic warning unit, hydraulic system performs and feedback element is connected with signal adapter, and described hydraulic system performs and feedback element includes the trigger button on the position sensor one on oil cylinder one, the position sensor two on oil cylinder two, hand-operated direction valve, servo valve one, servo valve two and band assist handle solenoid directional control valve；ALU additionally controls system with TRT and is connected.
In described control system, the servo executive component in all electronic components and hydraulic system is satisfied by the requirement of GB3836.14-2000 " explosive atmosphere electric apparatus for explosive atmospheres ".
The input power of described control system is two-way alternating current power supply; intelligent electric appliance protection module is connected respectively through power transfer module and redundant power module; intelligent electric appliance protection module has 4 road individual loads protection circuit, and wherein 2 road individual loads protection circuit connect servo valve one and servo valve two respectively.
Described control system is provided with explosion-proof control panel, and explosion-proof control panel sets anti-explosion touch screen, control handle and signal lights.
Compared with prior art, the beneficial effects of the utility model are:
1) adopt 2 servo valves control 2 oil cylinders respectively, it is ensured that oil cylinder synchronous operation, synchronous control accuracy when 2 oil cylinders automatically control up to 0.1mm, thus to the quiet leaf divergence of TRT turbine implement safe and reliable, control accurately；
2) arrange oil cylinder automatically control, the soft Non-follow control of oil cylinder and oil cylinder three kinds of duties of hard Non-follow control, it is ensured that system safely and effectively run and can improve operational efficiency, prolongation system service life；
3) control system electrical element and servo executive component all adopts Explosion-proof Design, thoroughly solve the potential safety hazard that the coal gas region electrical equipment existed in original system is not explosion-proof；
4) system is provided with explosion-proof control panel, it be furnished with multiple signals lamp and multiplexed operation control handle button and anti-explosion touch screen, when Central Control Room controls end fault, operator can pass through anti-explosion touch screen or control handle manual operation controls stator blade aperture, ensures unit safety operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of TRT stator blade actuator synchronous control system described in the utility model.
Fig. 2 is the annexation schematic diagram of control system described in the utility model and hydraulic servo performance element.
Fig. 3 is the structural representation of control system power supply input described in the utility model.
Fig. 4 is the structural representation of explosion-proof control panel described in the utility model.
In figure: A. oil cylinder one B. oil cylinder two A2-1. hydraulic control one-way valve I mono-A2-2. hydraulic control one-way valve I bis-B2-1. hydraulic control one-way valve II mono-B2-2. hydraulic control one-way valve II bis-A4. hydraulic lock one B4. hydraulic lock two A3. pilot operated directional control valve one B3. pilot operated directional control valve two A1. servo valve one B1. servo valve two C2. hand-operated direction valve C1. band assist handle solenoid directional control valve D. oil pump D1. trigger button C3. synchronous valve DC1. power transfer module DC2. Power Monitoring Unit DC3. redundant power module DC4. intelligent electric appliance protection module
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:
Seeing Fig. 1, be the structural representation of TRT stator blade actuator synchronous control system described in the utility model, a kind of TRT stator blade actuator synchronous control system described in the utility model, including the electrohydraulic servo system being made up of hydraulic system and control system；
The pressure oil inflow pipeline of described hydraulic system is respectively arranged with servo valve one A1, servo valve two B1, synchronous valve C3, hand-operated direction valve C2 and band assist handle solenoid directional control valve C1, wherein:
2 actuator ports of servo valve one A1 connect rod chamber and the rodless cavity of oil cylinder one A respectively through hydraulic control one-way valve I mono-A2-1 and hydraulic control one-way valve I bis-A2-2, and the position sensor one that oil cylinder one A installs connects servo valve one A1 by control system；2 actuator ports of servo valve two B1 connect rod chamber and the rodless cavity of oil cylinder two B respectively through hydraulic control one-way valve II mono-B2-1 and hydraulic control one-way valve II bis-B2-2, and the position sensor two that oil cylinder two B installs connects servo valve two B1 by control system；Hydraulic control one-way valve I mono-A2-1, hydraulic control one-way valve I bis-A2-2, hydraulic control one-way valve II mono-B2-1, hydraulic control one-way valve II bis-B2-2 control port be connected with hand-operated direction valve C2 respectively；Above section collectively constitutes oil cylinder automatic control loop；
Synchronous valve C3 connects hydraulic lock one A4 respectively through pilot operated directional control valve one A3, hydraulic lock two B4 is connected by pilot operated directional control valve two B3,2 check valves of hydraulic lock one A4 are connected in parallel on the in-line before oil cylinder one A and on oil return line respectively, and 2 check valves of hydraulic lock two B4 are connected in parallel on the in-line before oil cylinder two B and on oil return line respectively；Pilot operated directional control valve one A3 and pilot operated directional control valve two B3 is respectively through band assist handle solenoid directional control valve C1 connection control system；Each portion collectively constitutes oil cylinder manual control circuit above；
Hand-operated direction valve C2 is provided with trigger button D1, triggers ammonium button D1 and is connected with control system；
Described control system is made up of ALU, signal output module, signal adapter, anti-explosion touch screen and acousto-optic warning unit, being between ALU and signal output module, anti-explosion touch screen and be bi-directionally connected, signal adapter is connected with ALU and signal output module respectively；Signal output module additionally connects hydraulic system execution and feedback element and acousto-optic warning unit, hydraulic system performs and feedback element is connected with signal adapter, and the execution of described hydraulic system and feedback element include the position sensor two on the position sensor one on oil cylinder one A, oil cylinder two B, trigger button D1 on hand-operated direction valve C2, servo valve one A1, servo valve two B1 and band assist handle solenoid directional control valve C1；ALU additionally controls system with TRT and is connected.
In described control system, the servo executive component in all electronic components and hydraulic system is satisfied by the requirement of GB3836.14-2000 " explosive atmosphere electric apparatus for explosive atmospheres ".
The input power of described control system is two-way alternating current power supply; intelligent electric appliance protection module DC4 is connected respectively through power transfer module DC1 and redundant power module DC3; intelligent electric appliance protection module DC4 has 4 road individual loads protection circuit, and wherein 2 road individual loads protection circuit connect servo valve one A1 and servo valve two B1 respectively.
Described control system is provided with explosion-proof control panel, and explosion-proof control panel sets anti-explosion touch screen, control handle and signal lights.
The operational approach of a kind of TRT stator blade actuator synchronous control system described in the utility model, automatically controls including oil cylinder, the soft Non-follow control of oil cylinder and oil cylinder 3 kinds of mode of operations of hard Non-follow control, specifically comprises the following steps that
1) oil cylinder automatic control process: hand-operated direction valve C2 handle is pushed oil circuit to and automatically controlled side, and oil circuit switches to oil cylinder automatic control loop duty, by trigger button D1, this status information is delivered to control system simultaneously；Now from the control port hydraulic oil connection hydraulic control one-way valve I mono-A2-1, hydraulic control one-way valve I bis-A2-2, hydraulic control one-way valve II mono-B2-1, hydraulic control one-way valve II bis-B2-2 of pressure oil import input, hydraulic oil enters oil cylinder one A and oil cylinder two B and promotes piston rod to move；Detection position signalling is fed back to control system by position sensor on oil cylinder one A and oil cylinder two B respectively, compared with controlling, with TRT, the stator blade opening control signal that system transmits, position control output signal after comparison process is sent to servo valve one A1 and servo valve two B1 respectively, servo valve one A1 and servo valve two B1 controls to export oil cylinder one A or the hydraulic fluid flow rate of oil cylinder two B through corresponding hydraulic control one-way valve respectively, it is achieved oil cylinder one A and oil cylinder two B automatic synchronization control；
2) the soft Non-follow control process of oil cylinder: when Non-follow control side pushed to by hand-operated direction valve C2 handle, oil circuit switches to oil cylinder manual control circuit duty；By trigger button D1, this status information is delivered to control system, control system sends the soft hand control switch signal in a distant place to the both sides solenoid with assist handle solenoid directional control valve C1 respectively, control pilot operated directional control valve one A3 and controlled the stroke of oil cylinder one A by hydraulic lock one A4, control pilot operated directional control valve two B3 simultaneously and controlled the stroke of B4 liquefaction cylinder two B by hydraulic lock two；Realize the soft manual synchronization of oil cylinder one A and oil cylinder two B to control；
3) the hard Non-follow control process of oil cylinder: when controlling system because of power supply trouble power-off or hydraulic system electric part fault, only has oil pump D and operates as hydraulic system fuel feeding, and system can not realize automatically controlling and can not realize the soft Non-follow control in a distant place；Now by hand-operated direction valve C2 or with the Manual operation handle on assist handle solenoid directional control valve C1, the dynamic operation control oil way of direct skilled hand controls the stroke of oil cylinder one A and oil cylinder two B, thus support equipment safe operation.
The ac power input end of described control system is parallel with Power Monitoring Unit DC2, and detection two-way alternating current power supply power supply state, has alarm respectively during AC-DC Circuit fault in real time；When any one road AC-DC Circuit fault, by redundant power module DC3, namely another road ac-dc power supply circuit still to system normal power supply, can possess system power supply function of redundancy protection.
Being respectively equipped with electric current on the 4 road individual loads protection circuit of described intelligent electric appliance protection module DC4 and show and insure resistance, protective current parameter sets many grades of Parameter adjustable；When logic control element detects the load variations on a certain individual loads protection circuit close to protective current value set in advance; namely implement pre-alarm to show; prompting skilled addressee intervene, it is to avoid causes damage because common electrical protection switchs direct turn-off circuit electric current.
This utility model improves two oil cylinders in original TRT system and adopts and run asynchronous during a road servo valve control, very easily causes the defect of mechanical failure, improves TRT running efficiency of system；The TRT unit operation life-span can be extended, improve operational efficiency, increase blast furnace gas recovery system economic benefit.This system hydraulic servo executive component and control system electronics all adopt Explosion-proof Design, supporting electro-hydraulic devices all to meet coal gas region explosion-proof electrification standard, thoroughly solve the potential safety hazard that the coal gas region electrical equipment of original system existence is not explosion-proof.
2 oil cylinders A, B have been respectively configured position sensor, adopt high-resolution, in high precision, high sensitivity quick response technology, when oil cylinder automatically controls, oil cylinder position signal is through control system with compared with the TRT stator blade opening control signal controlling system transmission, and two oil cylinder synchronous control accuracy after ALU intelligence calculation process are up to 0.1mm.Position sensor is consistent to the zero-bit with mechanical system by zero adjustment after installing, it is prevented that oil cylinder stroke causes the damage of mechanical system beyond the range of movement of mechanical system.
When oil cylinder hand operated control method in this utility model is more suitable in mechanical erection and maintenance process hydraulic system with mechanical engagement tracking, visual lower associating hydraulic pressure adjusts with machinery, danger generation when can prevent remote operation.
Pilot operated directional control valve one A3 and the pilot operated directional control valve two B3 front end of oil cylinder manual control circuit is furnished with synchronous valve C3, can balance, adjust, distribute into oil mass and the oil pressure of oil cylinder one A and oil cylinder two B when Non-follow control, so that oil cylinder one A and oil cylinder two B is in soft manual and hard Non-follow control, control to synchronize as far as possible under oil cylinder stroke situation through manually moving reversing handle, and synchronization accuracy≤3% during Non-follow control；So that it is guaranteed that automatically controlling and the synchronicity of cylinder action time manual.
Oil cylinder stroke, hydraulic fluid pressure, filter differential pressure, supplied by AC/DC electricity, servo valve duty etc. can be detected by control system in real time, and testing result is displayed by anti-explosion touch screen and coherent signal lamp after treatment in real time；When controlling system generation sound and light alarm, can automatically record alert event.The stroke of two oil cylinders, hydraulic fluid pressure, real-time tendency record, alert event record can be inquired about by historical query function；Thus realizing TRT unit stationary guide blade servo system is detected protection in real time.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; it is equal to replacement according to the technical solution of the utility model and design thereof or is changed, all should be encompassed within protection domain of the present utility model.
Claims (4)
1. a TRT stator blade actuator synchronous control system, it is characterised in that include the electrohydraulic servo system being made up of hydraulic system and control system；
The pressure oil inflow pipeline of described hydraulic system is respectively arranged with servo valve one, servo valve two, synchronous valve, hand-operated direction valve and band assist handle solenoid directional control valve, wherein:
2 actuator ports of servo valve one connect rod chamber and the rodless cavity of oil cylinder one respectively through hydraulic control one-way valve I mono-and hydraulic control one-way valve I bis-, and the position sensor one that oil cylinder one is installed connects servo valve one by control system；2 actuator ports of servo valve two connect rod chamber and the rodless cavity of oil cylinder two respectively through hydraulic control one-way valve II mono-and hydraulic control one-way valve II bis-, and the position sensor two that oil cylinder two is installed connects servo valve two by control system；Hydraulic control one-way valve I mono-, hydraulic control one-way valve I bis-, hydraulic control one-way valve II mono-, hydraulic control one-way valve II bis-control port be connected with hand-operated direction valve respectively；Above section collectively constitutes oil cylinder automatic control loop；
Synchronous valve connects hydraulic lock one respectively through pilot operated directional control valve one, hydraulic lock two is connected by pilot operated directional control valve two, 2 check valves of hydraulic lock one are connected in parallel on the in-line before oil cylinder one and on oil return line respectively, and 2 check valves of hydraulic lock two are connected in parallel on the in-line before oil cylinder two and on oil return line respectively；Pilot operated directional control valve one and pilot operated directional control valve two are respectively through band assist handle solenoid directional control valve connection control system；Each portion collectively constitutes oil cylinder manual control circuit above；
Hand-operated direction valve is provided with trigger button, triggers ammonium button and is connected with control system；
Described control system is made up of ALU, signal output module, signal adapter, anti-explosion touch screen and acousto-optic warning unit, being between ALU and signal output module, anti-explosion touch screen and be bi-directionally connected, signal adapter is connected with ALU and signal output module respectively；Signal output module additionally connects hydraulic system execution and feedback element and acousto-optic warning unit, hydraulic system performs and feedback element is connected with signal adapter, and described hydraulic system performs and feedback element includes the trigger button on the position sensor one on oil cylinder one, the position sensor two on oil cylinder two, hand-operated direction valve, servo valve one, servo valve two and band assist handle solenoid directional control valve；ALU additionally controls system with TRT and is connected.
2. a kind of TRT stator blade actuator synchronous control system according to claim 1, it is characterized in that, in described control system, the servo executive component in all electronic components and hydraulic system is satisfied by the requirement of GB3836.14-2000 " explosive atmosphere electric apparatus for explosive atmospheres ".
3. a kind of TRT stator blade actuator synchronous control system according to claim 1; it is characterized in that; the input power of described control system is two-way alternating current power supply; intelligent electric appliance protection module is connected respectively through power transfer module and redundant power module; intelligent electric appliance protection module has 4 road individual loads protection circuit, and wherein 2 road individual loads protection circuit connect servo valve one and servo valve two respectively.
4. a kind of TRT stator blade actuator synchronous control system according to claim 1, it is characterised in that described control system is provided with explosion-proof control panel, and explosion-proof control panel sets anti-explosion touch screen, control handle and signal lights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620118004.4U CN205383125U (en) | 2016-02-05 | 2016-02-05 | Quiet leaf actuating mechanism synchronous control system of TRT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620118004.4U CN205383125U (en) | 2016-02-05 | 2016-02-05 | Quiet leaf actuating mechanism synchronous control system of TRT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205383125U true CN205383125U (en) | 2016-07-13 |
Family
ID=56349714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620118004.4U Withdrawn - After Issue CN205383125U (en) | 2016-02-05 | 2016-02-05 | Quiet leaf actuating mechanism synchronous control system of TRT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205383125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545842A (en) * | 2016-02-05 | 2016-05-04 | 魏英群 | TRT static blade actuator synchronization control system and control method |
| CN107165874A (en) * | 2017-06-29 | 2017-09-15 | 中国重型机械研究院股份公司 | A kind of plate stretch machine stretching cylinder synchronous power save hydraulic composite control system |
-
2016
- 2016-02-05 CN CN201620118004.4U patent/CN205383125U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545842A (en) * | 2016-02-05 | 2016-05-04 | 魏英群 | TRT static blade actuator synchronization control system and control method |
| CN107165874A (en) * | 2017-06-29 | 2017-09-15 | 中国重型机械研究院股份公司 | A kind of plate stretch machine stretching cylinder synchronous power save hydraulic composite control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105545842B (en) | A kind of TRT stator blades executing agency synchronous control system and control method | |
| CN105134684B (en) | Logic oil duct control system with electromagnetic switch valves and failure autodiagnosis method | |
| CN109268347B (en) | Generator set and steam turbine interruption early warning system thereof | |
| CN102278124A (en) | Energy-saving hydraulic shield propulsion system | |
| CN205370659U (en) | Hydraulic pressure governing system that steam turbine was used | |
| CN102268497A (en) | Safety control method for TRT (Blast Furnace Top Gas Recovery Turbine Unit) fixed blade servo control system | |
| CN205383125U (en) | Quiet leaf actuating mechanism synchronous control system of TRT | |
| CN201684804U (en) | Servo control system for plate bending machine | |
| CN105159263A (en) | Intelligent electro-hydraulic actuator self-healing regulation and control system control method | |
| CN108119419A (en) | A kind of electrohydraulic servo system of new type hydraulic turbine governor | |
| CN104235109B (en) | Axial flow compressor servo closed loop redundant electrohydraulic proportional control apparatus | |
| CN204099327U (en) | Axial flow compressor servo closed loop redundant electrohydraulic proportional control apparatus | |
| CN108560633A (en) | A kind of hydraulic excavator engine and variable pump complex controll online monitoring system | |
| CN106337849A (en) | TRT machine static-blade direct-drive electro-hydraulic servo control system | |
| CN205064990U (en) | Take gas trip valve of valve position teletransmission function | |
| CN205207295U (en) | Servo pump control hydraulic pressure straight line actuating system | |
| CN201746567U (en) | Hydraulic quick-acting switching-off control device for gas switching-off valve used for blast stove | |
| CN210637170U (en) | Fuel pipeline redundancy device of diesel generator | |
| CN2853494Y (en) | Controller of pantagraph current collector | |
| CN109236803B (en) | Hydraulic system with redundancy protection function | |
| CN203516939U (en) | Counterweight and storage energy redundancy combined pilot-operated slow-closure valve | |
| CN102840373B (en) | Electromagnetic remote control mechanism for gas cut-off valve | |
| CN202203033U (en) | Full-automatic electro-hydraulic proportional control system | |
| CN202710988U (en) | Microcomputer hydraulic servo controller | |
| CN101737170B (en) | Aeroengine generating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160713 Effective date of abandoning: 20170616 |