CN208984706U - Switch protection against electric shock detection and warning device - Google Patents
Switch protection against electric shock detection and warning device Download PDFInfo
- Publication number
- CN208984706U CN208984706U CN201821395837.0U CN201821395837U CN208984706U CN 208984706 U CN208984706 U CN 208984706U CN 201821395837 U CN201821395837 U CN 201821395837U CN 208984706 U CN208984706 U CN 208984706U
- Authority
- CN
- China
- Prior art keywords
- switch
- electrically connected
- electric shock
- protection against
- warning device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 230000004224 protection Effects 0.000 title claims abstract description 24
- 238000002955 isolation Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000005070 sampling Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009776 industrial production Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007849 functional defect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model proposes a kind of detection of switch protection against electric shock and warning devices, comprising: the active load being sequentially connected electrically egf block side-draw, switching value computing module and sound-light alarm execution module；The switching value computing module includes: the first limit switch of door closure before being mounted on Switch main body chamber, the second limit switch and the first isolation conversion switch for being mounted on wire connection cavity cover board, and the normally-closed contact of the normally opened contact of first limit switch, the normally opened contact of second limit switch and first isolation conversion switch is in parallel；The sound-light alarm execution module includes: divider resistance, protective resistance, biasing resistor, light emitting diode, triode and active buzzer; the protective resistance and the light emitting diode connect to form series arm, and one end of one end of the biasing resistor and the active buzzer is electrically connected the base stage and collector of the triode.The utility model solves the technical issues of whether electric switch still charges no detection function to separating brake afterload side.
Description
Technical field
The utility model relates to electro-mechanical arts more particularly to a kind of detection of switch protection against electric shock and warning devices.
Background technique
In recent years, with the raising of China's expanding economy and industrial automatization, more and more high-power electrics
The electrical equipments such as switch (vacuum circuit breaker, vacuum contactor), motor are used widely in the industrial production, industrial production effect
Rate is promoted steadily.But some security risks that these power switches are hidden in use, such as: high-power electrical
The vacuum tube of breaker (either contactor) in the control switch of equipment is due to line short fault or self deterioration failure
It easily sticks together, even if control switch shows gate-dividing state at this time, but the load side of electric switch is viscous in vacuum tube contact
It is still charged in corresponding phase line even.
In the prior art, common electric switch to separating brake afterload side whether still charge without detection function and electrification it is pre-
Alert function, at this moment if electric operation work carries out maintenance of uncapping to electric switch, easily take for switching it is not charged and directly into
Row operation, so that the personal safety accident that electric shock is hurted sb.'s feelings occur.
Utility model content
Based on problem above, the utility model proposes a kind of detection of switch protection against electric shock and warning devices, solve existing skill
Whether electric switch still charges without detection function and electrification warning function, so as to cause when electrical separating brake afterload side in art
Operative employee carries out maintenance of uncapping to electric switch, easily takes for switching not charged and directly being operated, to get an electric shock
The technical issues of personal safety accident hurted sb.'s feelings.
The utility model proposes a kind of detection of switch protection against electric shock and warning devices, comprising:
The active load being sequentially connected electrically egf block side-draw, switching value computing module and sound-light alarm execution module；
The switching value computing module includes: the first limit switch of door closure before being mounted on Switch main body chamber, is mounted on and connects
The second limit switch and the first isolation conversion switch of line chamber cover board, the normally opened contact of first limit switch, described second
The normally-closed contact of the normally opened contact of limit switch and first isolation conversion switch is in parallel；
The sound-light alarm execution module includes: divider resistance, protective resistance, biasing resistor, light emitting diode, triode
And active buzzer, the protective resistance and the light emitting diode connect to form series arm, one end of the biasing resistor
Be electrically connected the base stage and collector of the triode with one end of the active buzzer, the emitter of the triode with
One end of the series arm is grounded, the other end and the active buzzer of the biasing resistor and the series arm
The other end and connect rear one end with the divider resistance and be electrically connected, the other end of the divider resistance and the switching value operation
Module electrical connection.
In addition, active load side sampling part includes: three-phase reactor and three rectifier diodes, the three-phase electricity
The primary side of anti-device is electrically connected switch load side, and three conducting wires that the secondary side of the three-phase reactor is drawn are electrically connected one
A rectifier diode, the three-phase reactor single phase half wave rectifications electricity in parallel with three rectifier diodes formation three
Road.
In addition, active load side sampling part includes: three voltage transformers, three rectifier diodes, the electricity
The primary side of mutual inductor is pressed to be electrically connected switch load side, the secondary side of each voltage transformer is electrically connected an institute
Rectifier diode is stated, three voltage transformers form three single phase half wave rectifications in parallel with three rectifier diodes
Circuit.
In addition, three voltage transformers, three AC relays, the second isolation conversion switch, transformer and rectifier bridge, often
The primary side of one voltage transformer is electrically connected switch load side, the secondary side electrical connection of each voltage transformer
Two normally-closed contacts of one AC relay, second isolation conversion switch are electrically connected Switching Power Supply side wantonly two
Phase, the primary side of the transformer are electrically connected second isolation conversion switch, described in the secondary side electrical connection of the transformer
Rectifier bridge, the direct current output positive terminal of the rectifier bridge are electrically connected one end of the contact of three AC relays in parallel.
In addition, the voltage of the active buzzer is 3V.
In addition, the triode is 9013 types.
In addition, the protective resistance is 0.1K Ω, the biasing resistor is 15K Ω.
By using above-mentioned technical proposal, have the following beneficial effects:
The utility model solves whether electric switch in the prior art still charges without detection function separating brake afterload side
Warning function can and be charged, maintenance of uncapping is carried out to electric switch so as to cause when electric operation work, easily takes for switch not
It charges and is directly operated, thus the technical issues of personal safety accident that electric shock is hurted sb.'s feelings occurs.The present embodiment passes through design
One simple and effective switch protection against electric shock detection solves asking for security risk existing in the prior art with warning device
Topic, avoids operative employee or service personnel's electric shock is injured.
Detailed description of the invention
Fig. 1 is the circuit diagram of switch protection against electric shock detection and warning device that the utility model one embodiment provides；
Fig. 2 is the circuit diagram of switch protection against electric shock detection and warning device that the utility model one embodiment provides；
Fig. 3 is the circuit diagram of switch protection against electric shock detection and warning device that the utility model one embodiment provides.
Specific embodiment
The utility model is further described in detail below in conjunction with specific embodiment and attached drawing.It is only intended in detail
The thin specific embodiment for illustrating the utility model, does not generate any restrictions, the protection of the utility model to the utility model
Range is subject to claims.
Referring to Fig.1, the utility model proposes a kind of detection of switch protection against electric shock and warning devices, comprising:
The active load being sequentially connected electrically egf block side-draw, switching value computing module and sound-light alarm execution module；
Switching value computing module includes: the first limit switch SQ1 of door closure before being mounted on Switch main body chamber, is mounted on wiring
Second limit switch SQ2 of chamber lid plate and the first isolation conversion switch, the normally opened contact of the first limit switch SQ1, the second limit
The normally-closed contact K00 of the normally opened contact of switch SQ2 and the first isolation conversion switch is in parallel；
Sound-light alarm execution module includes: divider resistance R0, protective resistance R1, biasing resistor R2, light emitting diode D0, three
Pole pipe VT and active buzzer HA, protective resistance R1 and light emitting diode D0 connect to form series arm, and the one of biasing resistor R2
End and one end of active buzzer HA are electrically connected the base stage B and collector C of the triode VT, the emitter of triode VT
One end of E and series arm is grounded, the other end of the other end and active buzzer HA of biasing resistor R2 and series arm
And connect and be electrically connected afterwards with one end of divider resistance R0, the other end of divider resistance R0 is electrically connected with switching value computing module.
Electric controling switch that common industrial powerful device uses (such as: the BKD16-400Z/1140 of electric light production
(660) flame-proof mine intelligence vacuum feed switch) although internal have a variety of protections such as short circuit, electric leakage, under-voltage, overload,
It is but without the detection whether still charged after switch separating brake to load side and warning function, there are this functional defect bring is huge
Big security risk is: when short circuit occurs for power supply line, huge short circuit current causes vacuum tube contact to melt adhesion, or due to
The reasons such as vacuum tube degradation failure itself cause contact to fail effectively to separate, although the separating brake of switch display at this time, load side exist
It is still charged in the phase line of contact adhesion, at this moment if check man opens electric controling switch and carries out replacement breaker or other electricity
When gas operates, electric shock casualty accident easily occurs.Based on this, the present embodiment proposes one kind and is able to detect whether load side is charged
Switch protection against electric shock detection and warning device, when detect load side electrification after, alarmed by alarm module, to prevent
The accident hurted sb.'s feelings of getting an electric shock occurs.
The working principle of switch protection against electric shock detection and warning device provided in this embodiment are as follows: active load egf block side-draw
Meeting one voltage value of inductive output, such as the voltage of 10V, then the direct current 4.5V electricity after A point can have a halfwave rectifier
Pressure (half wave rectified voltage be about alternating voltage peak 0.45 times), at this point, if operator is by the first isolation conversion switch
Locking position is got to, door closure maintenance is perhaps turned on the switch before body cavity or opens wire connection cavity cover board and overhauled, then by first
In the normally opened contact of the closed contact K00 of disconnecting switch, the normally opened contact of the first limit switch SQ1 and the second limit switch SQ2 extremely
A rare contact can be closed, then the normally opened contact of the normally-closed contact K00 of the first disconnecting switch, the first limit switch SQ1 and
The parallel circuit that the normally opened contact of second limit switch SQ2 is formed will be connected, and the 4.5V voltage of A point can be transmitted to F point at this time,
Electric current is 3V in the voltage of the G point of arrival sound sound-light alarm execution module after divider resistance R0 decompression, at this time triode VT
Base current IB about 0.1mA, collector current IC be about 15mA, electric current is by biasing resistor R2 and triode VT and connecing at this time
Place PE forming circuit, triode VT saturation conduction, active buzzer HA issue audible alarm；At the same time, since G point exists
DC voltage, electric current are formed into a loop by protective resistance R1 and light emitting diode D0 and grounding point PE, and light emitting diode D0 can point
The active buzzer HA collective effect of brighten the hair light, the light emitting diode D0 and sounding lighted achievees the effect that sound-light alarm.
The present embodiment solves whether electric switch in the prior art still charges without detection function separating brake afterload side
With electrification warning function, so as to cause maintenance of uncapping is carried out to electric switch when electric operation work, easily take for switching without
Electricity and directly operated, thus occur electric shock hurt sb.'s feelings personal safety accident the technical issues of.The present embodiment is by devising
One simple and effective switch protection against electric shock detection solves the problems, such as security risk existing in the prior art with warning device,
It avoids operative employee or service personnel's electric shock is injured.
Referring to Fig.1, in one of them embodiment, active load side sampling part includes: three-phase reactor SK and three
A rectifier diode (D11, D12, D13), three-phase reactor SK primary side electrical connection switch load side (U1, U2, V1, V2,
W1, W2), three conducting wires that the secondary side of three-phase reactor SK is drawn are electrically connected a rectifier diode, three-phase reactor
SK forms three single-phase half-wave rectifier circuits in parallel with three rectifier diodes.As long as any one phase electrification of three-phase, three-phase electricity
The secondary side of anti-device SK will induce the voltage of a 10V, then the direct current 4.5V after A point can have a halfwave rectifier
Voltage.The circuit that Fig. 1 is provided is suitable for internal without voltage transformer, the electric controling switch with three-phase reactor.
Referring to Fig. 2, in one of them embodiment, active load side sampling part includes: three voltage transformers, three
A rectifier diode, the primary side of voltage transformer are electrically connected switch load side, the secondary side difference of each voltage transformer
It is electrically connected a rectifier diode, three voltage transformers form three single phase half wave rectifications in parallel with three rectifier diodes
Circuit.The circuit that Fig. 2 is provided is suitable for the electric switch that there is voltage transformer in inside.
Three voltage transformers are respectively J1, J2 and J3, and three rectifier diodes are respectively D14, D15 and D16, and switch is negative
Lotus side is the side U1, U2, V1, V2, W1, W2, and voltage transformer is up-sampled from the three-phase line of switch load side, as long as three-phase is any
The electrification of one phase, corresponding voltage transformer will induce the voltage of 10V, then after A point can have a halfwave rectifier
Direct current 4.5V voltage, PE are ground terminal.
Referring to Fig. 3, in one of them embodiment, three voltage transformers, three AC relays, the second isolation turn
Switch, transformer I and rectifier bridge are changed, the primary side of each voltage transformer is electrically connected switch load side, each voltage is mutual
The secondary side of sensor is electrically connected an AC relay, and two normally-closed contacts K01 and K02 of the second isolation conversion switch are electric respectively
Connection switch source side appoints two-phase, and the primary side of transformer I is electrically connected the second isolation conversion switch, and the secondary side of transformer is electrically connected
Rectifier bridge is connect, the direct current output positive terminal of rectifier bridge is electrically connected one end of the contact of three AC relays in parallel.Rectifier bridge
One end H connecting triode VT emitter.The circuit that Fig. 3 is provided has voltage transformer suitable for inside and space is big, is easy to
The electric controling switch of intermediate relay and transformer is installed.
Three voltage transformers are respectively J4, J5 and J6, and three AC relays are respectively KA1, KA2 and KA3, rectifier bridge
It is made of D1, D2, D3 and D4, when electric controling switch is in gate-dividing state, when pulling open the power-off of the second isolation conversion switch hand handle, the
Two isolation conversion switch normally-closed contact K01, K02 closure, transformer I are powered, and the secondary side of transformer exports 5V alternating voltage, whole
Stream bridge DC output end is powered and exports 4.5V voltage.At this time if there is any one phase is charged in three-phase line, the phase at this time
Relay coil KA1, KA2 or KA3 of voltage transformer connection will obtain electric, corresponding contact K1, K2 or K3 closure；Rectifier bridge
The 4.5V voltage of direct current output positive terminal will reach A point.At this point, if the second isolation conversion switch is in locked position of coupler or behaviour
As personnel turn on the switch body cavity before door closure maintenance also or open that wire connection cavity cover board is split puts capable maintenance, contact K00, SQ1 into
With SQ2 will at least one contact closure, these three contacts constitute parallel circuit will be connected, at this time A point 4.5V electricity
Pressure will be transmitted to F point, active buzzer HA will sounding, light emitting diode D0 will light luminous, and the two collective effect reaches
To the effect of sound-light alarm.
Circuits are designed compared to others, the advantages of the present embodiment are as follows: first is that the high-tension line of increased circuit and switch
(major loop) is basic electrical isolation, and safety is relatively high；Second is that the power supply that sound-light alarm execution module needs is to use
Transformer directly takes electricity from source side transformation and the direct current after bridge rectifier, power supply stability are higher；Third is that when electricity
Gas control switch is during normal operation, and (relay coil removes for all elements, contact etc. in these increased circuits of the design
It is uncharged state outside), this had not only improved the safety of equipment but also had improved the service life of each device.
In one of them embodiment, the voltage of active buzzer is 3V.
In one of them embodiment, triode is 9013 types.
In one of them embodiment, protective resistance is 0.1K Ω, and biasing resistor is 15K Ω.
The present embodiment increases simple circuit on this basis, overcomes using existing element in electric controling switch
Existing electric controling switch is unable to the defect whether charged detection load side after switching separating brake.Circuit designed by the invention,
Structure is simple, and required component number is few, cheap, but realizes when charging after switching separating brake to load side
Sound-light alarm avoids electric operation personnel and the personal injuries such as electric shock occurs；Existing switch improves on existing system, changes
It is dynamic simple, there is no any influence to equipment original system and mode of operation.With design philosophy of the invention, to three of the above electricity
Road carries out local change, reaches same purpose of design, should all be within the scope of the present invention.
Above-described is only the principles of the present invention and preferred embodiment.It should be pointed out that for the general of this field
For logical technical staff, on the basis of the utility model principle, several other modifications can also be made, also should be regarded as practical
Novel protection scope.
Claims (7)
1. a kind of switch protection against electric shock detection and warning device characterized by comprising
The active load being sequentially connected electrically egf block side-draw, switching value computing module and sound-light alarm execution module；
The switching value computing module includes: the first limit switch of door closure before being mounted on Switch main body chamber, is mounted on wire connection cavity
The second limit switch and the first isolation conversion switch of cover board, the normally opened contact of first limit switch, second limit
The normally-closed contact of the normally opened contact of switch and first isolation conversion switch is in parallel；
The sound-light alarm execution module includes: divider resistance, protective resistance, biasing resistor, light emitting diode, triode and has
Source buzzer, the protective resistance and the light emitting diode connect to form series arm, one end of the biasing resistor and institute
The one end for stating active buzzer is electrically connected the base stage and collector of the triode, the emitter of the triode with it is described
One end of series arm is grounded, the other end and the active buzzer of the biasing resistor and the series arm it is another
One end simultaneously connects rear one end with the divider resistance and is electrically connected, the other end of the divider resistance and the switching value computing module
Electrical connection.
2. switch protection against electric shock detection according to claim 1 and warning device, which is characterized in that
Active load side sampling part includes: three-phase reactor and three rectifier diodes, and the one of the three-phase reactor
Secondary side is electrically connected switch load side, and three conducting wires that the secondary side of the three-phase reactor is drawn are electrically connected a rectification two
Pole pipe, the three-phase reactor form three single-phase half-wave rectifier circuits in parallel with three rectifier diodes.
3. switch protection against electric shock detection according to claim 1 and warning device, which is characterized in that
Active load side sampling part includes: three voltage transformers, three rectifier diodes, the voltage transformer
Primary side is electrically connected switch load side, and the secondary side of each voltage transformer is electrically connected two poles of the rectification
Pipe, three voltage transformers form three single-phase half-wave rectifier circuits in parallel with three rectifier diodes.
4. switch protection against electric shock detection according to claim 1 and warning device, which is characterized in that
Three voltage transformers, three AC relays, the second isolation conversion switch, transformer and rectifier bridge, described in each
The primary side of voltage transformer is electrically connected switch load side, and the secondary side of each voltage transformer is electrically connected described in one
AC relay, two normally-closed contacts of second isolation conversion switch are electrically connected Switching Power Supply side and appoint two-phase, described
The primary side of transformer is electrically connected second isolation conversion switch, and the secondary side of the transformer is electrically connected the rectifier bridge,
The direct current output positive terminal of the rectifier bridge is electrically connected one end of the contact of three AC relays in parallel.
5. switch protection against electric shock detection according to claim 1 and warning device, which is characterized in that
The voltage of the active buzzer is 3V.
6. switch protection against electric shock detection according to claim 1 and warning device, which is characterized in that
The triode is 9013 types.
7. switch protection against electric shock detection according to any one of claims 1 to 6 and warning device, which is characterized in that
The protective resistance is 0.1K Ω, and the biasing resistor is 15K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395837.0U CN208984706U (en) | 2018-08-28 | 2018-08-28 | Switch protection against electric shock detection and warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395837.0U CN208984706U (en) | 2018-08-28 | 2018-08-28 | Switch protection against electric shock detection and warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208984706U true CN208984706U (en) | 2019-06-14 |
Family
ID=66782516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821395837.0U Active CN208984706U (en) | 2018-08-28 | 2018-08-28 | Switch protection against electric shock detection and warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208984706U (en) |
-
2018
- 2018-08-28 CN CN201821395837.0U patent/CN208984706U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070215576A1 (en) | Electric shock prevention residual current circuit breaker | |
| CN104600575B (en) | The grounding device of anti-charged installation earth lead | |
| US20140300482A1 (en) | System including an indicator responsive to an electret for a power bus | |
| CN102751695B (en) | AC contactor main contact adhesion alarm protecting apparatus and method | |
| CN208984706U (en) | Switch protection against electric shock detection and warning device | |
| CN2850089Y (en) | Integrated protector for motor | |
| CN202524078U (en) | Arc suppression and overvoltage protection device controller | |
| US8975545B2 (en) | Circuit interrupter including indicator circuit | |
| CN104348149B (en) | A kind of 10kV voltage transformers primary side neutral ground control system | |
| CN208316405U (en) | A kind of three-phase alternating current electric rotating rut machine phase failure protector of controllable composite power supply | |
| CN102761098A (en) | Device and method for residual current protection | |
| CN104638617A (en) | Protection device for output end of generator car DC600V rectifier cabinet | |
| CN109270449A (en) | The prior-warning device and method of high pressure GIS switching point voltage mutual inductor ferromagnetic resonance | |
| CN213753969U (en) | Secondary open-circuit protection circuit of current transformer | |
| CN201118276Y (en) | Earth leakage circuit-breaker inverse transmission preventing device | |
| CN209102873U (en) | The prior-warning device of high pressure GIS switching point voltage mutual inductor ferromagnetic resonance | |
| CN2182456Y (en) | Excess voltage breaking device for lightning device | |
| CN208386131U (en) | The auxiliary ground fault of locomotive quickly isolates device | |
| CN205846362U (en) | Intelligent leakage protecting plug | |
| CN206758347U (en) | A kind of indoor alternating current high voltage vacuum load switch | |
| CN208257392U (en) | A kind of HV motor protection device | |
| CN206452110U (en) | A kind of overvoltage inhibiting apparatus | |
| CN206353700U (en) | Power consumer transformer Electrical Safety supervisory circuit | |
| CN105552768A (en) | Electricity-verification and grounding operation method for multifunctional electricity-verification and grounding trolley for centrally installed switchgear | |
| CN107561402A (en) | Power failure detection means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |