CN207624570U - A kind of reclosing on-load switch - Google Patents

Abstract

The utility model discloses a kind of reclosing on-load switches, including four input terminals, leading-out terminal, shaft, static contact and the moving contact to link with shaft, input terminal is electrically connected with static contact, leading-out terminal is electrically connected with moving contact, and shaft rotation drives moving contact to be contacting and separating to realize combined floodgate and separating brake with static contact；Wherein, the direct current generator for further including controller and shaft being driven to rotate；Controller includes control module and detection module；Detection module：It is electrically connected with four input terminals, detection in real time flows through the voltage parameter of each input terminal electric current and fed back in control module；Control module：Real-time voltage parameter is judged, when for abnormal voltage parameter if driving motor rotation realize that separating brake is realized in dynamic and static contact separation, when as normal voltage parameter if driving motor rotation realize dynamic and static contact connection realization combined floodgate；The features such as the utility model can carry out reclosing, versatility by wiring board control.

Description

A kind of reclosing on-load switch

Technical field

The utility model is related to a kind of reclosing on-load switches.

Background technology

Existing load-break switch is mainly used for the power distribution circuit for having high short circuit current and electronic machine electric appliance, when in circuit The situations such as under-voltage, over-pressed, phase shortage occur, need be manually operated load-break switch make its separating brake, to reach protection circuit or The effects that electric appliance.

Existing load-break switch is when occurring the failure of above-mentioned three kinds of situations, separating brake that can not be autonomous, and when upper State combined floodgate that cannot be autonomous after the trouble shooting of three kinds of situations.So automatic reclosing function is not had, it can only be by artificial Mode carry out separating brake and combined floodgate.Therefore exist after its reaction speed when breaking down is relatively slow or trouble shooting reaction speed compared with Slowly, extremely inconvenient.

Invention content

The utility model is mainly solving the technical problems that provide a kind of reclosing that can independently realize combined floodgate and separating brake On-load switch.

Technical solution is used by the utility model solves its technical problem：A kind of reclosing on-load switch, including Four input terminals, leading-out terminal, shaft, static contact and the moving contact with shaft linkage, input terminal are electrical with static contact Connection, leading-out terminal are electrically connected with moving contact, and shaft rotation drives moving contact to be contacting and separating to realize conjunction with static contact Lock and separating brake；Wherein, the direct current generator for further including controller and shaft being driven to rotate；Controller include control module and Detection module；

Detection module：It is electrically connected with four input terminals, detection in real time flows through the voltage ginseng of each input terminal electric current Number is simultaneously fed back in control module；Control module：Real-time voltage parameter is judged, when being such as abnormal voltage parameter Then driving motor rotation realizes that separating brake is realized in the separation of dynamic and static contact, when as normal voltage parameter if driving motor rotate realization Dynamic and static contact connection, which is realized, closes a floodgate.

Control module detects the voltage parameter of all input terminals by detection module, if voltage parameter is abnormal electricity When pressing parameter, then driving motor operates control module so that circuit separating brake.Whether abnormal voltage parameter herein refers to scarce Phase, whether it is under-voltage and whether overvoltage.Since detection module is to detect in real time, after the voltage parameter of input terminal is normal, control Then driving motor operates molding block so that circuit closes a floodgate.Such structure is when over-pressed, under-voltage and phase shortage occurs in circuit, load Switch can fast implement separating brake, and after trouble shooting, on-load switch can fast implement combined floodgate.It must not be manually operated, significantly Reduce the operating time.

Wherein, the detection module is voltage sampling resistor, and control module is obtained by flowing through the electric current of voltage sampling resistor Take voltage parameter.By voltage sampling resistor, control module can be made to obtain voltage ginseng according to the electric current for flowing through sample resistance Number.

Wherein, the normal voltage interval value being preset in control module, the voltage parameter detected in real time are such as each fallen within normally It is then normal voltage parameter in voltage range value；It is on the contrary then be abnormal voltage parameter.

Tool is adopted the structure there are three types of function, the voltage of the first under-voltage protection, i.e., a certain input terminal is less than normally Voltage range value is at this time under-voltage condition, and control module controls motor-driven rotatable shaft movement and realizes separating brake.Second, phase shortage is protected The voltage value of shield, i.e., a certain input terminal is 0, is at this time non-full-phase state not in normal voltage interval value, control module It controls motor-driven rotatable shaft movement and realizes separating brake.The third, the voltage of overvoltage protection, i.e., a certain input terminal is more than normal voltage Interval value is at this time overvoltage condition, and control module controls motor-driven rotatable shaft movement and realizes separating brake.No matter which kind of is protected, when right When the trouble shooting answered, motor all can drive shaft movement realization combined floodgate.

Wherein, normal voltage interval value is 170V-250V.

Wherein, input terminal wherein three is firewire input terminal, remaining is zero curve input terminal：On firewire input terminal It is arranged with current transformer, current transformer is for detecting real-time current value and feeding back in control module；It is pre- in control module Equipped with load current value, real-time current value is compared by control module with load current value, and such as real-time current value is more than specified Then driving motor rotation realizes that separating brake is realized in dynamic and static contact separation to current value.

It adopts the structure, the real-time current value of detection input is gone by current transformer, then feeds back to control In module, real-time current value is compared by control module with load current value, when real-time current value is more than load current value, Then control module can control motor rotation and realize separating brake.Overcurrent protection and short-circuit protection may be implemented in such structure.

Wherein, at least two different load current values are preset in control module, control module further includes selecting switch, Selecting switch is for selecting different load current values.

The load current value of conventional load-break switch is steady state value, i.e., if the current value in circuit is more than the value When, then load-break switch separating brake.On the market common load-break switch include 400A specifications, 450A specifications, 600A Specification and 630A specifications, the load-break switch of each specification its rated current setting value after production is constant It can not change, by taking 400A as an example, load current value is exactly 400A after production, can not be changed into 630A.And use this reality With novel, load current value can be changed, the load that can be changed into corresponding specification according to the user's choice is kept apart It closes, the versatility of such structure is stronger compared with prior art.

Wherein, further include force-storing device, the force-storing device includes shell, driving wheel, torsional spring and idler wheel；Driving wheel and motor Axis and shaft are that linkage is arranged, and the one side of driving wheel is provided with shift fork portion, are set in shift fork portion there are two the locating slot being connected to, The shape of locating slot matches with idler wheel；One end of torsional spring is arranged with idler wheel, and idler wheel is extend into locating slot, the torsional spring other end with Shell is fixed；Driving wheel rotation drives idler wheel to switch in locating slot with wheel rotation of driving up.

The design of force-storing device can make rotating wheel rotation accelerate, realize the effect of quick acting switching-off, combined floodgate.It has Body principle is as follows：Motor shaft drive rotating wheel rotation when, one end that torsional spring is cased with idler wheel is located in one of in locating slot, when by This end of torsional spring equipped with idler wheel can be moved in another locating slot after power, and torsional spring understands first deformation and then restores shape during movement Become, to accelerate shift fork portion to move so that rotating wheel accelerates, since rotating wheel and shaft are linkage setting, shaft Velocity of rotation can also be accelerated.

Wherein, force-storing device further includes input gear, and transmission wheel periphery is equipped with the driving cog engaged with input gear, inputs tooth Taking turns has an auxiliary section being located at outside shell, and auxiliary section is for connecting realization manual operation with external rocking handle.

Using the design of input gear and auxiliary section so that shaft may be used external rocking handle and realize manual operation.

Wherein, further include limiting device, limiting device includes two microswitches and rocking arm, the rocking arm and shaft phase Company moves with it；The trigger unit of two microswitches is located in the rotary motion trace of rocking arm, the position pair of one of microswitch Dynamic and static contact is answered to be exactly in closing position, another microswitch corresponds to dynamic and static contact and is exactly in open position, fine motion Switch is electrical connection with controller, and work is left the motor off in feedback signal to controller after microswitch triggering.

Motor is stopped after the setting of limiting device can make load-break switch reach combined floodgate or separating brake, specific work It is as follows to make principle：It is beaten to when closing a floodgate when load-break switch from separating brake, shaft rotation drives rocking arm rotation, when dynamic and static contact connects When connecing, rocking arm just triggers the microswitch of corresponding closing position at this time, makes electricity in microswitch feedback signal to controller Machine stops operating.Similarly, when load-break switch is beaten from closing a floodgate to separating brake, principle is also similar therewith.

Wherein, be additionally provided on controller control the on-load switch manual operation mode and motor operation pattern switching open It closes.

By switching the design of switch, the mode of operation of load-break switch can be made to change according to demand, such as need Operation mode is then changed into manual operation by switching switch when being manually operated, it is as the same when needing motor operation.

Wherein, moving contact includes two conductive sheets, and two conductive sheets are that interval is arranged, which is used for clamping static contact； Elastic support sheet is equipped between conductive sheet and shaft, elastic support sheet is for hindering the interval between two conductive sheets to increase.

Using the setting of support chip, between preventing static contact from leading to conductive sheet when frequently into and out of the interval of conductive sheet Distance increases, and the separation of two conductive sheets is hindered to be not necessarily referring to limit dead conductive sheet and make it that can not move, and refers to playing centainly to hinder Effect.Meanwhile such structure can increase chucking power of two conductive sheets to static contact, improve stability.

Description of the drawings

Fig. 1 is the circuit diagram of the utility model embodiment 1

Fig. 2 is the structural schematic diagram of the utility model embodiment 1；

Fig. 3 is structural schematic diagram local in the utility model embodiment 1；

Fig. 4 is the front view of shaft and the moving contact in shaft in the utility model embodiment 1；

Fig. 5 is the structural schematic diagram of limiting device in the utility model embodiment 1；

Fig. 6 is the structural schematic diagram of force-storing device in the utility model embodiment 1.

Specific implementation mode

Embodiment 1：

With reference to shown in attached drawing 1-6, a kind of reclosing on-load switch, including shell 1,2, four input terminals of shaft, four 4, four groups of leading-out terminal, 5, four groups of moving contact static contact 6, controller 7, motor 8, force-storing device 9 and limiting device 10.

Four input terminals, four 4, four groups of leading-out terminal, 5, four groups of moving contact static contacts 6, four input terminals 3 and four A static contact 6 corresponds and is electrical connection between the two, and four leading-out terminals 4 and four moving contacts 5 correspond simultaneously And between the two be electrical connection.It distinguishes four input terminals 3 for convenience below, it is defeated to be referred to as L1 input terminals 31, L2 Enter terminal 32, L3 input terminals 33 and the poles N input terminal 34.

Force-storing device 9, force-storing device 9 include shell 91, driving wheel 92, torsional spring 93 and idler wheel 94.Driving wheel 92 is connected to electricity Between arbor and shaft 2, and three is that linkage is arranged.The side of driving wheel 92 has shift fork portion 95, is set in shift fork portion 95 There are two the locating slots 96 being connected to, and the side in shift fork portion 95 has the opening of two locating slots 96 of connection.Locating slot 96 Shape and the shape of idler wheel 94 match, and one end of torsional spring 93 is arranged with idler wheel 94, and idler wheel 94 extend into one of locating slot In 96, the other end and the shell 91 of torsional spring 93 are fixed.During exercise, torsional spring 93 is arranged with this end of idler wheel 94 and can be positioned at one In slot 96, as driving wheel 92 is rotating, idler wheel 94 can be moved in another locating slot 96,93 meeting of torsional spring in moving process Then first deformation restores deformation again, to the velocity of rotation for the wheel 92 that drives up, to be realized to the effect for accelerating shaft 2 to move Quick switching on and off.

Force-storing device 9 further includes input gear 97, and 92 periphery of driving wheel is equipped with the driving cog 99 engaged with input gear 97, defeated Enter gear 97 with an auxiliary section 98 outside shell 91, the shape of auxiliary section 98 is quadrangular, and shell 1 is stretched out in auxiliary section 98 It can be connect with external rocking handle, to realize manual operation.

The one side in shell 1 is arranged in limiting device 10, and limiting device 10 includes microswitch I 101, II 102 and shakes Arm 103.It is that linkage is arranged that rocking arm 103, which is set in shaft 2 with shaft 2, so shaft 2 can drive rocking arm 103 in rotation It rotates.Microswitch I 101, II 102 sets up separately by rocking arm 103, and the trigger unit of microswitch I 101, II 102 is located at In the rotary motion trace of rocking arm 103, it can make that microswitch I 101, II 102 can when rocking arm 103 rotates with touch trigger portion It is fed back in controller 7 with generating signal, controller 7 obtains that direct current generator 8 can be controlled after the signal out of service.Fine motion is opened Close I 101 settings position it is corresponding be closing position, the corresponding position that microswitch II 102 is arranged is open position.This It refers to that, when dynamic and static contact 6 is touched, rocking arm 103 can just touch the triggering of a microswitch I 101 to locate closing position Portion；And open position refers to, when dynamic and static contact 6 is completely separable, rocking arm 103 can just touch touching for microswitch II 102 Hair portion.

Four groups of moving contacts 5 are one-to-one relationship with four groups of static contacts 6, by taking one of which moving contact 5 as an example, shaft 2 On offer mounting hole 21, moving contact 5 is arranged in mounting hole 21, moving contact 5 include two spaced conductive sheets 51 with And two elastic support sheets 52.The interval of two conductive sheets 51 is used for clamping static contact 6, and the setting of elastic support sheet 52 is corresponding conductive Between the side and shaft 2 of piece 51, it is simple for, be provided between the left side and shaft 2 of the conductive sheet 51 in left side One elastic support sheet 52, there are one elastic support sheets 52 for setting between being located at the right side and shaft 2 of the conductive sheet 51 on right side； The shape of elastic support sheet 52 is " V " font, and Liang Ge foots 53 offset with conductive sheet 51, and middle part 54 offsets with shaft 2, is used The design of such structure can make static contact 6 when static contact 6 is extend among interval under the action of elastic support sheet 52 Clamped is tighter, even if static contact 6 frequently enters and leave interval, can also hinder two under the action of elastic support sheet 52 Interval between conductive sheet 51 increases.

Controller 7 includes control module 71, power module 72 and detection module.

Detection module：Detection module is voltage sampling resistor 74, and voltage sampling resistor 74 electrically connects with four input terminals 3 It connects, the real-time voltage parameter in real-time detection circuit is simultaneously fed back in control module 71.Specifically, voltage sampling resistor 74 is Four, each input terminal 3 is connected with a voltage sampling resistor 74 respectively, and control module 71 is obtained by voltage sampling resistor 74 Take the voltage parameter on each input terminal 3.

Control module 71：Real-time voltage parameter is judged, when for abnormal voltage parameter if driving motor 8 rotate Realize that separating brake is realized in the separation of dynamic and static contact 6, when as normal voltage parameter if the rotation realization dynamic and static contact 6 of driving motor 8 company Realization is connect to close a floodgate.Concrete structure is：Normal voltage interval value is preset in control module 71, normal voltage interval value is 170V- 250V.Control module 71 by the voltage parameter of each input terminal 3 obtained by voltage sampling resistor 74 and the interval value into Row compares, if the voltage parameter of each input terminal 3 is each fallen in the interval value, regards as being normal voltage parameter, such as Load-break switch is in gate-dividing state to fruit at this time, then controls the operating of 8 drive shaft 2 of motor and realize combined floodgate；As load at this time every It leaves pass and has been in "on" position, then remain unchanged.If there is the voltage parameter of one or more input terminal 3 is not fallen within just In normal voltage range value, then the abnormal voltage parameter of voltage parameter is assert, 71 driving motor 8 of control module is so that shaft 2 rotates reality Existing separating brake.Voltage parameter, which is not fallen in normal voltage interval value, herein following three kinds of situations：The first, under-voltage condition, i.e., it is defeated The voltage for entering terminal is less than normal voltage interval value, and such is under-voltage condition.Second, non-full-phase state, the i.e. electricity of input terminal Pressure value is 0, and not in normal voltage interval value, such is non-full-phase state.The third, overvoltage condition, the i.e. electricity of input terminal Pressure is more than normal voltage interval value, and such is overvoltage condition.

Power module 72：Power module 72 is carried by being connected with four input terminals 3 for motor 8 and control module 71 Power supply source.

Above-mentioned load-break switch further includes overcurrent protection function and short-circuit protection function, overcurrent protection function and short Road defencive function with lower structure by being realized：

73 quantity of current transformer is three and is respectively sleeved at L1 input terminals 31, L2 input terminals 32, L3 input terminals On 33, current transformer 73 feeds back to the real-time current value that detection reaches in control module 71.71 inside of control module is pre- Equipped with load current value, real-time current value is compared by control module 71 with load current value, when real-time current value is more than volume When constant current value, 71 driving motor 8 of control module makes the operating of shaft 2 realize separating brake.Either over-current state or short-circuit condition, The real-time current value that current transformer 73 detects is necessarily greater than load current value, therefore adopts the structure and overcurrent may be implemented And short-circuit protection.Load current value can be set according to the specification of load-break switch, and common load current value has 400A, 450A, 500A and 630A.Overcurrent indicator light is additionally provided on shell 1, when load-break switch is in over-current state, It can be indicated by lighting indicator light.

In order to enable load-break switch versatility is stronger, the load current value in control module 71 is four, respectively 400A, 450A, 500A and 630A.Control module 71 is equipped with selection circuit and selecting switch 75, passes through selecting switch 75 The different branch of control selections circuit is connected to select corresponding load current value, and the quantity of selecting switch 75 is four herein It is corresponding with four load current values respectively, corresponding selecting switch 75 is pressed when needing to select a certain load current value. Selecting switch 75 is exposed on the outside by shell 1, for user's operation.Previous load-break switch Yi Dan production after only there are one Load current value can not be changed, and adopt the structure so that load current value selects for user there are four load-break switch tools It selects.

The switching switch for controlling the on-load switch manual operation mode and motor operation pattern is additionally provided on controller 7 76。

It is additionally provided on controller 7 and realizes that motor rotation drives dynamic and static contact or the divide-shut brake of separation for pressing The rotation realization divide-shut brake of motor 8 may be implemented by pressing the on-off switch 77 in switch 77.

Claims (10)

1. a kind of reclosing on-load switch, including four input terminals, leading-out terminal, shaft, static contact and link with shaft Moving contact, input terminal and static contact be electrically connected, and leading-out terminal is electrically connected with moving contact, and shaft rotation drives moving contact It is contacting and separating to realize combined floodgate and separating brake with static contact；It is characterized in that：Further include controller and drive shaft rotation The direct current generator turned；Controller includes control module and detection module；

Detection module：It is electrically connected with four input terminals, detection in real time flows through the voltage parameter of each input terminal electric current simultaneously It is fed back in control module；

Control module：Real-time voltage parameter is judged, when for abnormal voltage parameter if driving motor rotation realize it is dynamic, Separating brake is realized in static contact separation, when as normal voltage parameter if driving motor rotation realize dynamic and static contact connection realization combined floodgate.

2. a kind of reclosing on-load switch as described in claim 1, it is characterised in that：The detection module is voltage sampling electricity Resistance, control module obtain voltage parameter by flowing through the electric current of voltage sampling resistor.

3. a kind of reclosing on-load switch as claimed in claim 2, it is characterised in that：The normal electricity being preset in control module It is normal voltage parameter if each falling in normal voltage interval value to press interval value, the voltage parameter detected in real time；It is on the contrary then be Abnormal voltage parameter.

4. a kind of reclosing on-load switch as claimed in claim 3, it is characterised in that：Normal voltage interval value is 170V- 250V。

5. a kind of reclosing on-load switch as described in claim 1-4 any one, it is characterised in that：Input terminal wherein three A is firewire input terminal, remaining is zero curve input terminal：Current transformer, current transformer are arranged on firewire input terminal For detecting real-time current value and feeding back in control module；

Load current value is preset in control module, real-time current value is compared by control module with load current value, strictly according to the facts When current value be more than that then driving motor rotation realizes that separating brake is realized in the separation of dynamic and static contact to load current value.

6. a kind of reclosing on-load switch as claimed in claim 5, it is characterised in that：At least two are preset in control module Different load current values, control module further include selecting switch, and selecting switch is for selecting different load current values.

7. a kind of reclosing on-load switch as described in claim 1, it is characterised in that：Further include force-storing device, the force-storing device Including shell, driving wheel, torsional spring and idler wheel；Driving wheel is that linkage is arranged with motor shaft and shaft, the one side of driving wheel It is provided with shift fork portion, is set in shift fork portion there are two the locating slot being connected to, shape and the idler wheel of locating slot match；One end of torsional spring It is arranged with idler wheel, idler wheel is extend into locating slot, and the torsional spring other end is fixed with shell；Driving wheel rotation drives idler wheel in locating slot Middle switching is with wheel rotation of driving up.

8. a kind of reclosing on-load switch as claimed in claim 7, it is characterised in that：Force-storing device further includes input gear, is passed Driving wheel periphery is equipped with the driving cog engaged with input gear, and there is input gear an auxiliary section being located at outside shell, auxiliary section to use Manual operation is realized in being connect with external rocking handle.

9. a kind of reclosing on-load switch as described in claim 1, it is characterised in that：Further include limiting device, limiting device Including two microswitches and rocking arm, the rocking arm is connected with shaft to be moved with it；The trigger unit of two microswitches is located at In the rotary motion trace of rocking arm, the position of one of microswitch corresponds to dynamic and static contact and is exactly in closing position, another is micro- The dynamic corresponding dynamic and static contact of switch is exactly in open position, and microswitch is electrical connection with controller, after microswitch triggering Work is left the motor off in feedback signal to controller.

10. a kind of reclosing on-load switch as described in claim 1, it is characterised in that：Moving contact include two conductive sheets, two A conductive sheet is that interval is arranged, which is used for clamping static contact；Elastic support sheet, elasticity branch are equipped between conductive sheet and shaft Blade is for hindering the interval between two conductive sheets to increase.