• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Two circuit breakers or circuit breaker modules are actuated by hydraulic jacks fed by supply and drain valves operated by a single closing-operation control unit. A differential pressure detector is subjected to the pressure of the two jacks. In the event of a relative variation in the jack-operating times, the free piston of the detector actuates a switching device which connects the supply and drain valves to the drain tank, thus preventing the complete performance of any non-simultaneous operation of the circuit breakers.
    公开号:SU1192637A3
    申请号:SU782689453
    申请日:1978-11-29
    公开日:1985-11-15
    发明作者:Ален Гратцмюллер Клод
    申请人:Gratzmueller C A；
    IPC主号:
    专利说明:

    This invention relates to a hydroaviomatics and can be used in hydraulic drives of multiphase electrochemical systems. An idle hydraulic device for controlling electric switches, containing hydraulic cylinders, one-way rods of which are rigidly connected to the switches, control device and distributors each of which is connected by an input with a command device and connected to the piston cavity of one of the hydraulic cylinders, the source of working fluid and the tank And The disadvantage of this device is the low reliability due to the lack of control of the synchronism of the movement of the hydraulic cylinder rods. It is also known a hydraulic device for controlling electric switches, comprising hydraulic cylinders, one-way rods of which are rigidly connected to switches, a command device with synchronized outputs and a system of two-position electrically controlled valves, each of which is connected by an input to one of the outputs of the command device, is connected to a piston the cavity of one of the cylinders, the source of the working fluid and the tank, and is configured to be held in each of the positions after disabling the command 2J signal. . The disadvantage of this device is low reliability due to the possible asynchronous switching of the switches at various forces on the hydraulic cylinder rods. The purpose of the invention is to increase the reliability of operation. This goal is achieved by the hydraulic device for controlling electric switches, which contains hydraulic cylinders, one-way rods of which are rigidly connected to the switches, a command device with synchronized outputs and a two-way electrically controlled valves, each of which is connected by an input to one of the outputs of the command valve. device, is connected to the piston cavity of one of the hydraulic cylinders, the source of working fluid and the tank and is configured to hold in each of the positions no shutdown of the command signal, equipped with sensing elements, the number of which is one less than the number of hydraulic cylinders, each having a pair of switches for valves and a sleeve with a piston and two chambers separated by a piston, each of which is connected to the piston cavity of one of the hydraulic cylinders, and with two spring-loaded pushers installed in the chambers coaxially with the piston with the possibility of interaction with the switches connected with the command device. Distributors can be equipped with hydraulic control units, each sensor element is equipped with three throttles, and each switch is designed as two series-connected controlled check valves, the first of which is installed to interact with the sensor pusher and hydraulically connected to the tank, the source of working fluid and with the control inlet of the second valve, the working outlets of which are connected to the tank and to the hydraulic control unit of the corresponding distributor, in this case Sensors are connected to each other and to the cavities of hydraulic cylinders through chokes, Cal (this switch can be made as a pair of normally open electrical contacts, one of which is movable and installed with the ability to interact with the pusher. Fig. 1 shows a schematic diagram of the proposed device; FIG. 2 is a diagram of the device when the switches are operated by hydraulic; 3 is a diagram of the electric switches. A hydraulic device for controlling electric switches contains (FIG. 1) three hydraulic cylinders 1-3, one-way stems 4-6 of which are rigidly connected to electric switches (not shown), a command device 7 with synchronized outputs, a two-position system (not shown) electrically controlled distributors 8-10, each of which is connected to one of the outputs of the command device 7, are connected to a piston cavity 11, 12 or 13, respectively, hydraulic cylinders 1,2,3, the source 14 of the working fluid and the tank
    (not shown) and made with the possibility of holding in each of the positions after disabling the command signal, and sensitive elements 15 and 16, the number of which is one less than the number of hydraulic cylinders 1-3, with switches (not shown) for valves 8-10 connected with the command device 7. Each sensor has a sleeve with a piston and two chambers and spring loaded tappets (not shown).
    The device shown in (Fig. 2) contains two hydraulic cylinders 17 and 18, one-way rods 19 and 20 of which are rigidly connected to electric switches (not shown), a command device (not shown) with synchronized outputs, a two-position system (not shown). electrically controlled distributors 2 and 22, each of which is connected by an inlet to one of the outlets of the command device, are connected to the piston cavity 23 of I.PI 24, respectively, of the hydraulic cylinders 17 and 18, the source 25 of the working fluid and the tank 26 and are configured to be held in each minutes from the disconnecting position after the command signal, a sensor
    27 (one less than the number of hydraulic cylinders), having a pair of re-boilers
    28 and 29 for valves 21 and 22 and sleeve 30 with piston 31 and chambers
    32 and 33, separated by a piston 31. The chamber 32 is connected via a choke 34 with a piston cavity 23, and a chamber 33 through a choke 35 - with a piston cavity 24. Element 27 has spring-loaded pushers 36 and 37 installed in chambers 32 and 33 with the ability to interact with the switches 28 and 29, and the distributors 21 and 22 are equipped with hydraulic control units 38 and 39, respectively. The switch 28 is made in the form of serially connected control valves of check valves 40 and 41, the first valve 40 is installed with the ability to interact with the pusher 36 and is hydraulically connected with the tank 26, the source of working fluid 25 and the control input of the normally closed second valve 41, the workers the outlets of which are connected to the tank 26 and to the hydraulic control unit 38. The switch 29 is made in the form of serially connected controlled return valves 42 and 43, the first valve 42 is installed with the possibility of interaction with the pusher 37 and is hydraulically connected with the tank 26, the source 25 of the working fluid and the control input of the normally closed second valve 43, the workers the outlets of which are connected to the tank 26 and the hydraulic control unit 39 Cameras 32 and 33 are connected via a throttle 44.
    Switches 45 and 46 (Fig. 3) are electric and have normally open electrical contacts 47, 48 and 49.50, respectively, of which contacts 48 and 50 are movable and installed with the ability to interact with pushrods 51 and 52, respectively, placed in the sleeve. 53 of the sensing element 54, divided by the piston 55 into chambers 56 and 57, connected to the piston cavity of the hydraulic cylinders.
    The hydraulic device for controlling the electric switches operates as follows.
    When a driver signal is supplied from the command device 7 (Fig. 1), the distributors 8-10 synchronously switch to positions that supply the working fluid from the source 14 to the piston cavities 11-13 of the hydraulic cylinders 1-3, the rods 4-6 of which are pulled out, and electrical switches closes. To open the switches, the distributors 8-10 switch to positions that allow the cavities 11-13 to connect to the tank. In the event of a mismatch in the differential pressure in the cavities 1113 during the movement of the rods 4-6, the sensing elements 15 and 16 provide for the formation of commands for switching the valves 8-10 to the position that ensures the opening of the switches.
    During operation of the device shown in (Fig. 2), according to the command device signal, the distributors 21 and 22 synchronously switch to the positions ensuring the supply of working fluid from the source 25 to the piston cavities 23 and 24 of the hydraulic cylinders 17 and 18, the rods 19 and 20 of which move forward, and electrical switches are closed. For opening the switches, the valves 21 and 22 switch to positions that allow the cavities 23 and 24 to connect to the tank 26. If a misalignment (pressure difference) occurs in cavity 23 and 24 when the rods 19 and 20 extend, for example, valve overshoot occurs in cavity 24 42 under the influence of the increased pressure in chamber 33 and the switching of valve 40 under the influence of pusher 36 moved by a piston 31. Switching valves 40 and 42 causes a pressure drop at the control inputs of valves 41 and 43 and thereby e the working inputs of the latter, as a result of which the blocks 38 and 39 communicate with the tank 26, and the distributors 21 c 22 switch to the positions that ensure the connection of the cavities 23 and 24 with the tank 26 and stop the extension of the rods 19 and 20. Thus, non-simultaneous closing and overloading of switches is excluded. When the device operates with electrical switches (Fig. 3), in the event of a mismatch (pressure difference) in the piston cavities of the hydraulic cylinders, when the rods extend in the circuit-closing direction of the switches, the piston 55 moves and, therefore, one of pushers 51 and 52. If, for example, the pusher 51 moves, contacts 47 and 48 of the switch 45 are closed, as a result of which the command device generates a signal to switch the valves to the positions that provide union piston cavities of hydraulic cylinders to the tank and the termination of extendible rods. Thus, non-simultaneous closing and overloading of switches is also excluded. The absence of emergency situations associated with the overload of one or several switches ensures high reliability of the device operation. The use of the invention in hydraulic drives of multiphase electrical systems makes it possible to increase their reliability and efficiency of use.
    WH D.

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    权利要求:
    Claims (3)
    [1]
    1. HYDRAULIC DEVICE FOR CONTROL OF ELECTRIC CIRCUIT BREAKERS, containing hydraulic cylinders, one-sided rods of which are rigidly connected to switches, a command device with synchronized outputs and a system of on-off electrically controlled distributors, each of which is connected by an input to one of the outputs of the command device one of the hydraulic cylinders, the source of the working fluid and the tank and is made with the possibility of holding in each position after turning off the command signal, characterized in that, in order to increase the reliability of the device, it is equipped with sensitive elements, the number of which is one less than the number of hydraulic cylinders, each having a pair of switches for valves and a sleeve with a piston and two chambers separated by a piston, each of which is connected to the piston cavity of one from hydraulic cylinders, and with two spring-loaded pushers installed in the chambers coaxially with the piston with the ability to interact with switches associated with the command device.
    [2]
    2. The device according to claim 1, characterized in that the distributors are equipped with hydraulic control units, each sensitive element is equipped with three chokes, and each switch is made in the form of two serially connected controlled check valves, the first of which is installed with the possibility of interaction with the pusher of the sensitive element and hydraulically connected to the tank, the source of the working fluid and the control input of the second valve, the working outputs of which are connected to the tank and to the hydraulic control unit of the corresponding distribution edelitelya, wherein the sensing elements are interconnected chambers and with cavities of hydraulic cylinders through chokes.
    [3]
    3. The device according to claim 1, with the fact that each switch is made in the form of a pair of normally open electrical contacts, one of which is movable and installed with the possibility of interaction with the pusher.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1192637A3|1985-11-15|Hydraulic device for manipulating electric switches
    SU1005671A3|1983-03-15|Device for remotly controlling electric switch
    US4100932A|1978-07-18|Pipe burst safety device for natural gas pipe lines or the like
    GB1291888A|1972-10-04|Improvements in or relating to the electrohydraulic remote control of hydraulic control valves
    US3513751A|1970-05-26|Bistable hydraulic transfer means
    SU1270293A1|1986-11-15|Control system for blowout-preventing equipment
    GB925471A|1963-05-08|Manual and automatic hydraulic servomechanism
    CA2193930A1|1998-01-16|Control device
    SU923381A3|1982-04-23|Hydraulic actuator of high-voltage power switch
    SU868137A1|1981-09-30|Electrohydraulic drive
    JPS5932685A|1984-02-22|Capacity controller for variable capacity pump
    SU1186841A1|1985-10-23|Switching device for chromatograph
    SU1002697A1|1983-03-07|Actuator mechanism electrohydraulic control device
    SU934051A1|1982-06-07|Roof support control system
    US3616787A|1971-11-02|Overflow valve for a steam plant
    SU574541A1|1977-09-30|System for automatic control of turbomachine speed
    JPS58113605A|1983-07-06|Oil hydraulic circuit and control valve used for said circuit
    SU469954A1|1975-05-05|Multichannel pneumatic control device
    SU1007095A1|1983-03-23|Pneumatic logic device for signalling position of two actuating mechanisms
    RU2027864C1|1995-01-27|Control system for steam turbine heating-steam extraction stages
    SU1596141A2|1990-09-30|Stepping hydraulic drive
    US3358103A|1967-12-12|Anti-pump control scheme for fluidactuated circuit interrupters
    SU879065A1|1981-11-07|Hydraulic drive
    SU1479718A1|1989-05-15|Hydraulic drive for mounted machine
    SU1130724A1|1984-12-23|Multirow pusher-type furnace
    同族专利:
    公开号 | 公开日
    AU519177B2|1981-11-12|
    US4243855A|1981-01-06|
    FR2410753B1|1980-12-12|
    DE2849815C2|1983-04-07|
    IN150936B|1983-01-22|
    DE2849815A1|1979-06-07|
    BR7807923A|1979-07-31|
    FR2410753A1|1979-06-29|
    CA1116495A|1982-01-19|
    AU4155478A|1979-06-07|
    CH627238A5|1981-12-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2365095A|1941-08-19|1944-12-12|Vickers Inc|Power transmission|
    US3030930A|1956-03-27|1962-04-24|Gratzmuller Jean Louis|Hydraulic device for interlocking two hydraulic piston-cylinder units|
    DE1256072B|1958-11-27|1967-12-07|Erich Herion|Safety control for a pressure medium circuit|
    FR1355701A|1963-02-06|1964-03-20|Multiple purge control device for hydraulic circuit|
    US3480328A|1967-11-07|1969-11-25|Westinghouse Air Brake Co|Oscillating actuating means for mining heads of ripper miner|
    US3659498A|1970-08-13|1972-05-02|Pacific Press & Shear Corp|Ram attitude control system and valve assembly therefor|
    DE2543107C3|1975-09-25|1978-07-20|Siemens Ag, 1000 Berlin Und 8000 Muenchen|Device for drive control for hydraulically operated high-voltage circuit breakers|DE3008929A1|1980-03-08|1981-09-24|Schloemann-Siemag AG, 4000 Düsseldorf|SAFETY CONTROL DEVICE FOR HYDRAULICALLY HOLDING LOADS AGAINST UNCONTROLLED LOWERING AND LIFTING, FOR EXAMPLE ON VERTICAL PRESSES OR LOAD HOLDING DEVICES|
    KR860000371Y1|1981-12-02|1986-03-17|도오교오 덴기 가가꾸 고오교오 가부시기 가이샤|Thermo electricity element|
    US4567813A|1982-05-06|1986-02-04|Moog Inc.|Pressure equalization of multiple valves|
    DE3923474C2|1989-07-15|2000-05-04|Leybold Ag|Electrical switch|
    JP2679499B2|1991-12-27|1997-11-19|三菱電機株式会社|Circuit breaker and switch operating mechanism|
    US6399445B1|1997-12-18|2002-06-04|Texas Instruments Incorporated|Fabrication technique for controlled incorporation of nitrogen in gate dielectric|
    CA2496365C|2005-02-04|2010-06-22|Always "On" Ups Systems Inc.|Panel and breaker for distributing ups power|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7736277A|FR2410753B1|1977-12-02|1977-12-02|
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