CN107120327B - Breaker and its hydraulically linked operating mechanism - Google Patents
Breaker and its hydraulically linked operating mechanism Download PDFInfo
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- CN107120327B CN107120327B CN201710174090.XA CN201710174090A CN107120327B CN 107120327 B CN107120327 B CN 107120327B CN 201710174090 A CN201710174090 A CN 201710174090A CN 107120327 B CN107120327 B CN 107120327B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 70
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 206010008469 Chest discomfort Diseases 0.000 claims description 15
- 239000002828 fuel tank Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 111
- 230000033001 locomotion Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000010727 cylinder oil Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical failure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8613—Control during or prevention of abnormal conditions the abnormal condition being oscillations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/862—Control during or prevention of abnormal conditions the abnormal condition being electric or electronic failure
- F15B2211/8623—Electric supply failure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/875—Control measures for coping with failures
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to field of switch equipment, in particular to breaker and its hydraulically linked operating mechanism.Hydraulically linked operating mechanism includes hydraulic control unit and for each mutually one-to-one control unit with breaker, control unit includes power main valve, power main valve has main valve signal hydraulic fluid port, hydraulic control unit has for being connected to the hydraulic control signal hydraulic fluid port to be passed through high-voltage signal oil to main valve signal hydraulic fluid port and be connected to main valve signal hydraulic fluid port with low-pressure reservoir with main valve signal hydraulic fluid port, hydraulic control unit is total hydraulic control unit, and the main valve signal hydraulic fluid port of each power main valve connect with the hydraulic control signal hydraulic fluid port of total hydraulic control unit and controlled simultaneously by total hydraulic control unit simultaneously.Each corresponding power main valve of the breaker of hydraulically linked operating mechanism is controlled by total hydraulic control unit, simplify the structure of operating mechanism, the linkage of operating mechanism is realized by hydraulic control, the reliability for improving operating mechanism solves the problems, such as that current electric-linked formula operating mechanism reliability is low, at high cost.
Description
Technical field
The present invention relates to field of switch equipment, in particular to breaker and its hydraulically linked operating mechanism.
Background technique
Three-phase electrical power system in operation, does not allow phase-deficient operation generally, it is desirable that breaker carries out three when switching on and off operation
Mutually want synchronization action.To medium low pressure system, since breaker structure size is small, an operating mechanism is mostly used to pass through mechanical connection
Dynamic mode realizes that breaker three-phase synchronous acts, to high pressure, extra-high voltage Force system, since phase spacing is bigger, and open circuit
The structure size of device, operating force and impact vibration are all larger, are not easy to realize mechanical linkage in structure.
Currently, the three-phase ganged operation of breaker is generally using electric-linked in super-pressure, extra-high voltage electric power system
Mode, electric-linked larger, the biggish breaker of operating force suitable for phase spacing, passes through an electrical control cabinet and controls three liquid
Press operating mechanism that three-phase breaker is driven to carry out switching on and off movement.
Notification number is CN203733655U, the day for announcing is a kind of divide-shut brake liquid disclosed in the Chinese patent of 2014.07.23
Operating mechanism is pressed, divide-shut brake hydraulic actuating mechanism includes by Hydraulic Elements groups such as working cylinder, three step valves being connected to working cylinder
At control unit, further include the electric control unit being made of the electric controling element in control panel module, by one-step valve,
The hydraulic control unit that divide-shut brake secondary valve is constituted, electric control unit and hydraulic control unit constitute the control unit of hydraulic actuating mechanism.
Wherein, one-step valve is the electric signal switching valve for converting automatically controlled signal to hydraulic control signal, and switching on and off secondary valve is for putting
The amplifying valve of big hydraulic control signal, separating brake secondary valve, combined floodgate secondary valve have the hydraulic control signal hydraulic fluid port of connection, and three step valves are for controlling
The power main valve of working cylinder movement processed, three step valves have the actuator port being connected to the rodless cavity of working cylinder and hydraulic control signal oil
The main valve signal hydraulic fluid port of mouth connection, the high pressure oil export being connected to low pressure oil pocket, the high pressure oil inlet being connected to high tension loop.It is disconnected
When road device closes a floodgate, hydraulic control signal hydraulic fluid port output high-voltage signal oil enters power main valve, the actuator port and high pressure oil of power main valve
Inlet communication, high pressure oil, which enters, pushes piston rod movement in working cylinder rodless cavity, so that the component that cut-offs of breaker be driven to close a floodgate；
When breaker open operation, the high-voltage signal oil in separating brake secondary valve flows back by hydraulic control signal hydraulic fluid port, the actuator port of power main valve
With high pressure oil outlet, oil pressure is reduced in working cylinder rodless cavity, and piston rod is mobile to rodless cavity, and drive breaker cut-offs group
Part separating brake.The movement for controlling control unit when the hydraulic actuating mechanism works by electric control unit, for three-phase
For breaker, it usually needs electric-linked three hydraulic actuating mechanisms of control drive the three-phase of breaker to carry out divide-shut brake behaviour
Make, each hydraulic actuating mechanism includes control unit and control unit, and electric-linked formula hydraulic actuating mechanism includes three sets of controls
Unit and control unit processed, structure is complicated, more using component, and control loop is complicated, reduces breaker reliability of operation,
The dispersibility of three hydraulic actuating mechanisms also will increase the synchronism error of breaker three-phase separate, closing time, in addition, using three
Platform hydraulic actuating mechanism keeps product cost higher.
Summary of the invention
The object of the present invention is to provide a kind of hydraulically linked operating mechanisms, to solve current electric-linked formula actuating machine
Low, the at high cost problem of structure reliability.In addition, using above-mentioned hydraulically linked actuating the object of the invention is also to provide a kind of
The breaker of mechanism.
To achieve the above object, the technical solution of hydraulically linked operating mechanism of the invention are as follows: hydraulically linked actuating
Mechanism includes hydraulic control unit and for each mutually one-to-one control unit with breaker, and the control unit includes power
Main valve, the power main valve have main valve signal hydraulic fluid port, the hydraulic control unit have for be connected to main valve signal hydraulic fluid port with to
The hydraulic control signal hydraulic fluid port that main valve signal hydraulic fluid port is passed through high-voltage signal oil and is connected to main valve signal hydraulic fluid port with low-pressure reservoir, it is described
Hydraulic control unit is total hydraulic control unit, the main valve signal hydraulic fluid port of each power main valve while the hydraulic control signal oil with total hydraulic control unit
Mouth is connected and is controlled simultaneously by total hydraulic control unit.
The service tank that the hydraulically linked operating mechanism includes low-pressure reservoir and is connected to low-pressure reservoir, it is described
The quantity of the high pressure oil outlet of low-pressure reservoir and each power main valve, the service tank is identical as the quantity of power main valve
And service tank and power main valve correspond, the high pressure oil outlet of the service tank and corresponding power main valve,
The position of the service tank is higher than the position of low-pressure reservoir.
The power main valve includes uuper valve chamber and lower valve chamber, and the uuper valve chamber includes upper signal chamber, high pressure chest and sets
The upper working chamber between upper signal chamber and high pressure chest is set, the upper working chamber is used to be connected to the rodless cavity of working cylinder, on
Upper signal piston is equipped between signal chamber and upper working chamber, it is upper equipped with linking with signal piston between upper working chamber and high pressure chest
Spool, the lower valve chamber include lower signal chamber, the low pressure chamber for being connected to low-pressure reservoir, are arranged in lower signal chamber and low pressure
Lower working chamber between chamber, the lower signal chamber are connected to upper signal chamber, and the lower working chamber is connected to upper working chamber, institute
It is equipped with lower signal piston between the lower signal chamber and lower working chamber stated, is equipped with and lower letter between the lower working chamber and low pressure chamber
The bottom spool of number piston linkage.
The hydraulic control unit includes distributing valve, and the distributing valve is hydraulic control two-position three-way valve, the hydraulic control two
Triple valve have distributing valve actuator port, distributing valve signal hydraulic fluid port, the distributing valve oil inlet for being passed through high pressure oil, for it is low
The distributing valve oil return opening of pressure oil case connection, the distributing valve actuator port are connected to described in constituting with each main valve signal hydraulic fluid port
Hydraulic control signal hydraulic fluid port.
The distributing valve oil inlet is connected with auxiliary accumulator.
The technical solution of breaker of the invention are as follows: breaker includes cut-offfing component and the liquid of component divide-shut brake is cut-off in driving
Press operating mechanism, hydraulic actuating mechanism, including hydraulic control unit and for each mutually one-to-one control unit with breaker, institute
The control unit stated includes power main valve, the power main valve have main valve signal hydraulic fluid port, the hydraulic control unit have for
Main valve signal hydraulic fluid port is connected to be passed through high-voltage signal oil to main valve signal hydraulic fluid port and be connected to main valve signal hydraulic fluid port with low-pressure reservoir
Hydraulic control signal hydraulic fluid port, the hydraulic control unit is total hydraulic control unit, the main valve signal hydraulic fluid port of each power main valve simultaneously with it is described
The hydraulic control signal hydraulic fluid port of total hydraulic control unit is connected and is controlled simultaneously by total hydraulic control unit.
The hydraulic actuating mechanism includes low-pressure reservoir and the service tank that is connected to low-pressure reservoir, the low pressure oil
The quantity of the high pressure oil outlet of case and each power main valve, the service tank is identical as the quantity of power main valve and assists
Fuel tank and power main valve correspond, and the high pressure oil outlet of the service tank and corresponding power main valve is described
The position of service tank is higher than the position of low-pressure reservoir.
The power main valve includes uuper valve chamber and lower valve chamber, and the uuper valve chamber includes upper signal chamber, high pressure chest and sets
The upper working chamber between upper signal chamber and high pressure chest is set, the upper working chamber is used to be connected to the rodless cavity of working cylinder, on
Upper signal piston is equipped between signal chamber and upper working chamber, it is upper equipped with linking with signal piston between upper working chamber and high pressure chest
Spool, the lower valve chamber include lower signal chamber, the low pressure chamber for being connected to low-pressure reservoir, are arranged in lower signal chamber and low pressure
Lower working chamber between chamber, the lower signal chamber are connected to upper signal chamber, and the lower working chamber is connected to upper working chamber, institute
It is equipped with lower signal piston between the lower signal chamber and lower working chamber stated, is equipped with and lower letter between the lower working chamber and low pressure chamber
The bottom spool of number piston linkage.
The hydraulic control unit includes distributing valve, and the distributing valve is hydraulic control two-position three-way valve, the hydraulic control two
Triple valve have distributing valve actuator port, distributing valve signal hydraulic fluid port, the distributing valve oil inlet for being passed through high pressure oil, for it is low
The distributing valve oil return opening of pressure oil case connection, the distributing valve actuator port are connected to described in constituting with each main valve signal hydraulic fluid port
Hydraulic control signal hydraulic fluid port.
The distributing valve oil inlet is connected with auxiliary accumulator.
The invention has the benefit that the main valve signal hydraulic fluid port of each power main valve of control unit simultaneously with total hydraulic control unit
Hydraulic control signal hydraulic fluid port connection, the electric-linked formula operating mechanism phase with the current operating mechanism by electric-linked control
Than each corresponding power main valve of the breaker of hydraulically linked operating mechanism of the invention is by total same time control of hydraulic control unit
System, simplifies the structure of operating mechanism, reduces the cost of operating mechanism, while the connection of operating mechanism is realized by hydraulic control
It is dynamic, also improve the reliability of operating mechanism.
Further, the hydraulically linked operating mechanism includes low-pressure reservoir and the auxiliary being connected to low-pressure reservoir oil
Case, the high pressure oil outlet of the low-pressure reservoir and each power main valve, the quantity and power main valve of the service tank
Quantity is identical and service tank and power main valve correspond, the high pressure oil of the service tank and corresponding power main valve
Outlet, the position of the service tank are higher than the position of low-pressure reservoir, when driving working cylinder to carry out separating brake, power master
The high pressure oil export of valve needs outside quick oil-discharging, and service tank can accelerate the process of working cylinder oil extraction, to reduce open circuit
The intrinsic opening time of device.Due to service tank be higher than low-pressure reservoir, so the low pressure oil in service tank be finally returned to it is low
Pressure oil case does not influence the normal use of next breaking-closing operating.
Detailed description of the invention
Fig. 1 is the schematic illustration of the specific embodiment of hydraulically linked operating mechanism of the invention；
Fig. 2 is the structural schematic diagram of the specific embodiment of hydraulically linked operating mechanism of the invention；
Fig. 3 is the enlarged view of the part D in Fig. 2；
Fig. 4 is the schematic illustration of hydraulic actuating mechanism in the prior art.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of hydraulically linked operating mechanism of the invention, as shown in Figure 1 to Figure 3, hydraulically linked actuating
Mechanism includes control unit and three control unit A, B, C corresponding with breaker three, and hydraulically linked operating mechanism also wraps
Include fuel tank module 11, control unit includes electric control unit and total hydraulic control unit 1, and total hydraulic control unit 1 includes and fuel tank module
The divide-shut brake control modules 12 of 11 connections, fuel tank module 11 include low-pressure reservoir 111, service tank 112, main accumulator 113, the
One auxiliary accumulator 114, second assist accumulator 115, divide-shut brake control valve module 12 include combined control valve 121, with combine
The distributing valve 122 that control valve 121 connects, distributing valve 122 are hydraulic control two-position three-way valve, and distributing valve 122 has distributing valve working oil
Mouth 1221, the distributing valve oil inlet 1223 for being passed through high pressure oil, is used to be connected to low-pressure reservoir distributing valve signal hydraulic fluid port 1222
Distributing valve oil return opening 1224.
The structure of three control units is identical, and control unit A includes transmission mechanism 23 and connect with transmission mechanism for band
The working cylinder 21 of the fracture component movement of dynamic breaker and the power main valve 22 to link with working cylinder 21.Power main valve 22 has logical
Cross the main valve signal hydraulic fluid port 221 that signal oil circuit 1-A and distributing valve actuator port 1221 are connected to and the height connecting with main accumulator 113
Pressure oil import 222, the high pressure oil export 223 being connected to low-pressure reservoir 111 and service tank 112, the main valve being connected to working cylinder
Actuator port 224.In the present embodiment, main accumulator, the first and second auxiliary accumulator are homogeneously intercommunicated.Distributing valve actuator port
1221 are connected to constitute hydraulic control signal hydraulic fluid port with each main valve signal hydraulic fluid port.
The high pressure oil outlet of low-pressure reservoir 111 and each power main valve 22, the quantity and power main valve of service tank 112
22 quantity is identical and service tank 112 and power main valve 22 correspond, service tank 112 and corresponding power main valve 22
High pressure oil export 223 is connected to, and the position of service tank 112 is higher than the position of low-pressure reservoir 111.Separating brake is carried out in driving working cylinder
When, the high pressure oil export of power main valve needs outside quick oil-discharging, and service tank can accelerate the process of working cylinder oil extraction, thus
Reduce the intrinsic opening time of breaker.Since service tank is higher than low-pressure reservoir, so the low pressure oil in service tank is final
Back to low-pressure reservoir, the normal use of next breaking-closing operating is not influenced.
Power main valve 22 includes uuper valve chamber 225 and lower valve chamber 226, and uuper valve chamber 225 includes upper signal chamber 2251, high pressure chest
2252 and the upper working chamber 2253 that is arranged between upper signal chamber 2251 and high pressure chest 2252, upper working chamber 2253 is used for and work
The rodless cavity 213 of cylinder 21 is connected to, and upper signal piston 2254, upper working chamber are equipped between upper signal chamber 2251 and upper working chamber 2253
Be equipped with the upper valve core 2255 that link with signal piston between 2253 and high pressure chest 2252, lower valve chamber 226 including lower signal chamber 2261,
Low pressure chamber 2262 and the lower working chamber 2263 being arranged between lower signal chamber 2261 and low pressure chamber 2262, lower signal chamber 2261 with it is upper
Signal chamber 2251 is connected to, and lower working chamber 2263 is connected to upper working chamber 2253, between lower signal chamber 2261 and lower working chamber 2263
Equipped with lower signal piston 2264, the bottom spool to link with lower signal piston is equipped between lower working chamber 2263 and low pressure chamber 2262
2265, lower low pressure chamber 2262 is connected to low-pressure reservoir 111.By the way that upper and lower signal piston is arranged, can be improved active force valve can
By property, while facilitating installation, upper signal piston match with upper valve core when assembly, and lower signal piston is matched with bottom spool, and reduction fills
With precision.
The main valve signal hydraulic fluid port of each power main valve connect simultaneously with the hydraulic control signal hydraulic fluid port of total hydraulic control unit and by total hydraulic control
Unit controls simultaneously, and total hydraulic control unit 1 is provided only with and each control unit corresponding one simultaneously.The power master of three control units
The main valve signal hydraulic fluid port 221 of valve 22 is connected to distributing valve actuator port 1221 so that three control unit parallel connections, three actuatings
The divide-shut brake movement of unit is controlled by control unit.Control unit A passes through signal oil circuit 1-A, high-pressure oil passage 2-A, low pressure oil way
3-A is connect with control unit；Control unit B passes through signal oil circuit 1-B, high-pressure oil passage 2-B, low pressure oil way 3-B and control unit
Connection；Control unit C is connect by signal oil circuit 1-C, high-pressure oil passage 2-C, low pressure oil way 3-C with control unit；
The piston rod 211 connecting with transmission mechanism 23 is equipped in working cylinder 21, working cylinder 21 has rod chamber 212 and without bar
Chamber 213, rod chamber 212 are connected to main accumulator 113, and rodless cavity 213 is connected to the main valve actuator port 224 of power main valve 22.
Low-pressure reservoir 111 is connected with oil pump 116, and the high-pressure oil passage of combined control valve 121 is connect with oil pump 116, combination control
The low pressure oil way of valve 121 processed is connect with low-pressure reservoir 111.Combined control valve 121 includes combined floodgate one-step valve 1211, separating brake one-step valve
1212 and divide-shut brake secondary valve 1213, in the present embodiment, divide-shut brake secondary valve 1213, distributing valve 122 play amplified flow
Effect.Separating brake one-step valve 1211 and divide-shut brake secondary valve 1213 are integrated form integral valve.Divide-shut brake one-step valve is for will be automatically controlled
Signal is converted into the electro-hydraulic switching valve of hydraulic control signal, and switching on and off secondary valve and distributing valve are the hydraulic control for amplifying hydraulic control signal
Amplifying valve.
Low-pressure reservoir 111 is connected to 116 oil inlet of oil pump, and the oil inlet of 116 oil outlet of oil pump and shockproof container 117 connects
Logical, the tool of shockproof container 117 is there are two shockproof container oil outlet, and one of shockproof container oil outlet is connected with safety valve 118, separately
One shockproof container oil outlet connection the first auxiliary accumulator 114, the oil of shockproof container oil outlet and the first auxiliary accumulator 114
Press working chamber connection.Low-pressure reservoir 111 is connected to the auxiliary accumulator oil outlet of auxiliary accumulator and safety valve oil outlet.Fine motion
Switch 119 is located between auxiliary accumulator oil outlet and low-pressure reservoir 111, and the first auxiliary accumulator is connected with pressure monitoring device
120.Low-pressure reservoir 111 is connected to by oil return line with combined control valve 121, distributing valve 122, power main valve 22.Wherein connect
The oil return line of low-pressure reservoir 111 and combined control valve 121 is higher than separating brake one in combined control valve in the port of low-pressure reservoir 111
The fuel head of step valve valve port.
The hydraulic chamber of first auxiliary accumulator 114 and the working chamber of signal cylinder, the oil inlet of combined floodgate one-step valve 1211
It is connected to the oil inlet of divide-shut brake secondary valve 1213.The oil inlet of combined floodgate one-step valve 1211 is connected to high-pressure oil passage, distributing valve letter
Number hydraulic fluid port connecting dividing lock secondary valve 1213.The hydraulic control signal hydraulic fluid port and distributing valve signal hydraulic fluid port of divide-shut brake secondary valve 1213 connect
It is logical.
The course of work: hydraulic system establishes pressure first, and motor MO operating, the piston of oil pump 116, which moves down, increases oil pocket,
Low pressure oil in low-pressure reservoir 111 enters oil pocket by filter and spool E1, at this point, the piston of oil pump 116, which moves up, makes oil pocket
Interior oil is discharged as high pressure oil, and high pressure oil enters in shockproof container 117 by spool E3, due to the damping of shockproof container 117
Effect, the pulse of oil pressure, which is stirred, to be reduced, and high pressure oil enters main accumulator 113, second through the non-return valve of shockproof container 117 and assists
Accumulator 115 and the first auxiliary accumulator 114.High pressure oil pushes the piston in each accumulator to compress the nitrogen in each accumulator,
Make each accumulator energy storage.
When the oil pressure of each accumulator reaches the oil pressure of setting, the stopping of oil pump 116 is suppressed, and each accumulator completes energy storage.At this time
The check valve core AM shaken in container 117 is closed, and oil pump 116 is isolated from hydraulic system, to reduce oil pressure leakage.If
Control oil pump 116 stops the electric wiring suppressed and breaks down, and oil pump 116 is suppressed more than specified value, the peace in shockproof container 117
Full valve core AG will be opened, high pressure of releasing, to guaranteeing hydraulic system from the danger of over-voltage.
After the completion of hydraulic system pressure is established, when closing operation, switching electromagnet 123, which receives to close a floodgate, to be acted after order, is beaten
The spool AH1 of switching one-step valve closes spool AF1, and check valve core AH6 is opened, and high oil pressure enters divide-shut brake secondary valve
1213 upper cavity AV2 pushes the valve rod of divide-shut brake secondary valve 1213 downward, opens spool AH4, closes spool AH5, high pressure
Oil enters the inner cavity AV3 of divide-shut brake secondary valve 1213, and high pressure oil enters distributing valve 122 after metering hole AN at this time, closes spool
D3 opens spool D4, power main valve of the high pressure oil into three control oil pipes being connected to control unit to respective control unit
22 upper signal chamber 2251.High pressure oil enters after power main valve 22, and upper valve core 2255 is opened, and bottom spool 2265 is closed, main
High pressure oil in accumulator 113 enters the combined floodgate end of working cylinder 21 through metering hole N1, and piston compression area is ME.Working cylinder
Separating brake end is by normal high pressure, piston compression area MD.Because of ME > MD, so working cylinder piston moves upwards i.e. breaker closing.It closes
After lock, the combined floodgate end of working cylinder is kept under high pressure, and breaker maintains "on" position.
If switching electromagnet powers off in making process, the spool AH1 in combined floodgate one-step valve is closed, and spool AF1 is opened
It opens, check valve core AH6 is closed at this time, and the high pressure oil in the inner cavity AV3 of divide-shut brake secondary valve 1213 is added to through metering hole AK
In cavity AV2, divide-shut brake secondary valve 1213 is set to be maintained at closing position to continue to complete combined floodgate overall process.
In divide-shut brake 1213 feed motion of secondary valve, the high pressure oil of cavity AV3 is through metering hole FB1 entering signal cylinder FB
Combined floodgate end, piston compression area is FBE, and the separating brake end of signal cylinder is by normal high pressure, and piston compression area is FBD, because of FBE
> FBD drives auxiliary switch rotation by rack and pinion mechanism so signal the cylinder piston is moved right.The size of metering hole FB1
It can guarantee the contact being closed in auxiliary switch in closing position, just connected after on earth in breaker closing.Auxiliary switch conversion
Afterwards, contact powers off switching electromagnet.
When sub-switching operation, tripping electromagnet 124 acts after receiving separating brake order, opens separating brake level-one spool AH2, cavity
High pressure oil in AV2 is depressurized, and divide-shut brake secondary valve 1213 returns, closing spool AH4, in unlatching spool AH5, cavity AV3
High pressure oil decompression, distributing valve 122 reset, and spool D4 is closed, and D3 is opened, sub- 1-A, 1-B, 1-C decompression of pipeline, in power main valve 22
Upper signal chamber 2251 and lower signal chamber 2261 be also depressured therewith, upper valve core 2255 close, and C3 open, working cylinder combined floodgate end
High pressure oil is let out through metering hole N2 to service tank 112, which is the process in order to accelerate working cylinder oil extraction, to subtract
The intrinsic opening time of small breaker.Since service tank is higher than low-pressure reservoir, so oil is finally returned to low-pressure reservoir 111.
Since the separating brake end of working cylinder is by normal high pressure, so working cylinder piston moves downward, breaker open operation.After the completion of separating brake, power
Bottom spool 2265 in main valve resets under the action of the spring.Since working cylinder separating brake end is by normal high pressure, breaker maintains separating brake
Position.
When in inner cavity, AV3 is bled off pressure, the combined floodgate end FBE of signal cylinder FB is also depressured, because separating brake end FBD is by normal high pressure, signal cylinder
It returns, auxiliary switch also replaces therewith, and contact powers off tripping electromagnet.
The main signal hydraulic fluid port of each power main valve of the control unit of the invention hydraulic control signal oil with total hydraulic control unit simultaneously
Mouth connection, makes each power main valve by total hydraulic control unit while controlling.Current hydraulic actuating mechanism is as shown in figure 4, current
The three-phase hydraulic actuating mechanism 100 of hydraulic actuating mechanism respectively includes control unit 101 and control unit 102, passes through electric-controlled
Movement while cabinet 103 processed controls three-phase hydraulic actuating mechanism 100, passes through electric-linked control hydraulic actuating mechanism with current
Electric-linked formula operating mechanism compare, each corresponding power main valve of the breaker of hydraulically linked operating mechanism of the invention
It is controlled simultaneously by total hydraulic control unit, simplifies the structure of operating mechanism, reduce the cost of operating mechanism, while by hydraulic
The linkage of operating mechanism is realized in control, also improves the reliability of operating mechanism.
The specific embodiment of breaker of the invention, breaker include cut-offfing component and the liquid of component divide-shut brake is cut-off in driving
Operating mechanism is pressed, wherein described in the specific embodiment of the structure of hydraulic actuating mechanism and above-mentioned hydraulically linked operating mechanism
The structure of hydraulically linked operating mechanism is identical, and it will not go into details.
In other embodiments, according to the corresponding port number of breaker, control unit can be set two；Above-mentioned auxiliary oil
Case can be set one, and the power main valve of three each control units is connected to service tank at this time；Above-mentioned auxiliary accumulator can be with
It does not set, or is only arranged on flux amplification valve；Above-mentioned total hydraulic control unit can be by notification number in background technique
One-step valve, secondary valve in the patent document of CN203733655U are constituted, and above-mentioned control unit is also possible to by the patent document
In be made of Hydraulic Elements such as working cylinder, three step valves being connected to working cylinder.
Claims (10)
1. hydraulically linked operating mechanism, including hydraulic control unit and for each mutually one-to-one control unit with breaker,
The control unit includes power main valve, and the power main valve has main valve signal hydraulic fluid port, and the hydraulic control unit, which has, to be used for
It is connected to main valve signal hydraulic fluid port to be passed through high-voltage signal oil to main valve signal hydraulic fluid port and connect main valve signal hydraulic fluid port and low-pressure reservoir
Logical hydraulic control signal hydraulic fluid port, it is characterised in that: the hydraulic control unit is total hydraulic control unit, the main valve signal oil of each power main valve
Mouth connect with the hydraulic control signal hydraulic fluid port of total hydraulic control unit and is controlled simultaneously by total hydraulic control unit simultaneously.
2. hydraulically linked operating mechanism according to claim 1, it is characterised in that: the hydraulically linked actuating machine
Structure includes low-pressure reservoir and the service tank that is connected to low-pressure reservoir, and the low-pressure reservoir and the high pressure oil of each power main valve go out
Mouth connection, the quantity of the service tank is identical as the quantity of power main valve and service tank and power main valve correspond,
The position of the high pressure oil outlet of the service tank and corresponding power main valve, the service tank is higher than low pressure oil
The position of case.
3. hydraulically linked operating mechanism according to claim 2, it is characterised in that: the power main valve includes upper valve
Chamber and lower valve chamber, the uuper valve chamber include upper signal chamber, high pressure chest and the upper work being arranged between upper signal chamber and high pressure chest
Make chamber, the upper working chamber is equipped with upper signal for being connected to the rodless cavity of working cylinder between upper signal chamber and upper working chamber
Piston, is equipped with the upper valve core that links with signal piston between upper working chamber and high pressure chest, the lower valve chamber include lower signal chamber,
Low pressure chamber for being connected to low-pressure reservoir, the lower working chamber being arranged between lower signal chamber and low pressure chamber, the lower signal
Chamber is connected to upper signal chamber, and the lower working chamber is connected to upper working chamber, is set between the lower signal chamber and lower working chamber
There is lower signal piston, the bottom spool to link with lower signal piston is equipped between the lower working chamber and low pressure chamber.
4. hydraulically linked operating mechanism according to claim 1 or 2 or 3, it is characterised in that: total hydraulic control unit
Including distributing valve, the distributing valve is hydraulic control two-position three-way valve, and the hydraulic control two-position three-way valve has distributing valve working oil
Mouth, distributing valve signal hydraulic fluid port, the distributing valve oil inlet for being passed through high pressure oil, the distributing valve oil return for being connected to low-pressure reservoir
Mouthful, the distributing valve actuator port is connected to constitute the hydraulic control signal hydraulic fluid port with each main valve signal hydraulic fluid port.
5. hydraulically linked operating mechanism according to claim 4, it is characterised in that: the distributing valve oil inlet connection
There is auxiliary accumulator.
6. breaker cut-offs the hydraulic actuating mechanism of component divide-shut brake including cut-offfing component and driving, hydraulic actuating mechanism includes
Hydraulic control unit and for each mutually one-to-one control unit with breaker, the control unit includes power main valve, institute
Power main valve is stated with main valve signal hydraulic fluid port, the hydraulic control unit has for being connected to main valve signal hydraulic fluid port with to main valve signal
The hydraulic control signal hydraulic fluid port that hydraulic fluid port is passed through high-voltage signal oil and is connected to main valve signal hydraulic fluid port with low-pressure reservoir, it is characterised in that: institute
The hydraulic control unit stated is total hydraulic control unit, and the main valve signal hydraulic fluid port of each power main valve is believed with the hydraulic control of total hydraulic control unit simultaneously
The connection of number hydraulic fluid port and controlled simultaneously by total hydraulic control unit.
7. breaker according to claim 6, it is characterised in that: the hydraulic actuating mechanism include low-pressure reservoir and with
The service tank of low-pressure reservoir connection, the high pressure oil outlet of the low-pressure reservoir and each power main valve, the auxiliary
The quantity of fuel tank is identical as the quantity of power main valve and service tank and power main valve correspond, the service tank with it is right
The high pressure oil outlet for the power main valve answered, the position of the service tank are higher than the position of low-pressure reservoir.
8. breaker according to claim 7, it is characterised in that: the power main valve includes uuper valve chamber and lower valve chamber,
The uuper valve chamber includes upper signal chamber, high pressure chest and the upper working chamber being arranged between upper signal chamber and high pressure chest, described
Upper working chamber is equipped with upper signal piston, upper work for being connected to the rodless cavity of working cylinder between upper signal chamber and upper working chamber
It is equipped with the upper valve core that links with signal piston between chamber and high pressure chest, the lower valve chamber includes lower signal chamber, is used for and low pressure
The low pressure chamber of fuel tank connection, the lower working chamber being arranged between lower signal chamber and low pressure chamber, the lower signal chamber and upper signal
Chamber connection, the lower working chamber are connected to upper working chamber, and it is living that lower signal is equipped between the lower signal chamber and lower working chamber
Plug is equipped with the bottom spool to link with lower signal piston between the lower working chamber and low pressure chamber.
9. breaker described according to claim 6 or 7 or 8, it is characterised in that: total hydraulic control unit includes distributing valve,
The distributing valve is hydraulic control two-position three-way valve, and there is the hydraulic control two-position three-way valve distributing valve actuator port, distributing valve to believe
Number hydraulic fluid port, the distributing valve oil inlet for being passed through high pressure oil, the distributing valve oil return opening for being connected to low-pressure reservoir, point
It is connected to valve actuator port with each main valve signal hydraulic fluid port to constitute the hydraulic control signal hydraulic fluid port.
10. breaker according to claim 9, it is characterised in that: the distributing valve oil inlet is connected with auxiliary storage pressure
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710174090.XA CN107120327B (en) | 2017-03-22 | 2017-03-22 | Breaker and its hydraulically linked operating mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174090.XA CN107120327B (en) | 2017-03-22 | 2017-03-22 | Breaker and its hydraulically linked operating mechanism |
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| CN107120327A CN107120327A (en) | 2017-09-01 |
| CN107120327B true CN107120327B (en) | 2019-01-22 |
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| CN201710174090.XA Active CN107120327B (en) | 2017-03-22 | 2017-03-22 | Breaker and its hydraulically linked operating mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112503044B (en) * | 2020-03-20 | 2022-12-16 | 国网上海市电力公司 | Hydraulic control valve and hydraulic operating mechanism |
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| CN203733655U (en) * | 2014-02-21 | 2014-07-23 | 国家电网公司 | Hydraulic operating mechanism for opening and closing and grounding switch using the same |
| CN105443463A (en) * | 2015-12-01 | 2016-03-30 | 河南平芝高压开关有限公司 | Anti-jumping switch-on-off hydraulic operation mechanism and breaker with operation mechanism |
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|---|---|---|---|---|
| JP2011185396A (en) * | 2010-03-10 | 2011-09-22 | Chugoku Electric Power Co Inc:The | Monitoring system of hydraulic operation mechanism |
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| US4730092A (en) * | 1985-12-20 | 1988-03-08 | Siemens Aktiengesellschaft | Hydraulic driving device for an electric pressurized-gas switch |
| CN2582142Y (en) * | 2002-10-31 | 2003-10-22 | 凤城市辽东电力机械制造有限公司 | Hydraulic spring operating mechanism |
| DE102008004063A1 (en) * | 2008-01-12 | 2009-07-16 | Abb Technology Ag | Hydraulic drive |
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|---|---|
| CN107120327A (en) | 2017-09-01 |
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