CN210724305U

CN210724305U - Fault guiding safety device, power utilization safety system, multi-path power utilization safety system and automatic bus transfer interlocking control system

Info

Publication number: CN210724305U
Application number: CN201921418649.XU
Authority: CN
Inventors: 孙巍巍
Original assignee: Tianjin Zhongli Shendun Electronics Technology Co Ltd
Current assignee: Tianjin Zhongli Shendun Electronics Technology Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-06-09
Anticipated expiration: 2029-08-23

Abstract

The utility model provides a fault direction safety device, power consumption safety system, multichannel power consumption safety system and be equipped with automatic switching interlocking control system, including break-make portion, break-make portion both sides are input side and output side respectively, are in the on-state when break-make portion does not have electricity, and fault direction safety device is in the on-state, and break-make portion is the relay or the contactor of normally closed mode, and the A, B, C three-phase of input side all does not have electricity, and first being qualified for the next round of competitions, the second is qualified for the next round of competitions and is in the on-state, and the A, B, C three-phase of input side is arbitrary double-phase to have. The utility model has the advantages that: the fault guiding safety device is simple in structure and reasonable in design, and by means of the fault guiding safety device, the circuit power-on condition of real-time monitoring is achieved, when electric interlocking fails or fails, the fault circuit can be enabled to run safely when being switched on, accidents are avoided, switching-on safety can be guaranteed, and safety of personnel and electric appliances is guaranteed.

Description

Fault guiding safety device, power utilization safety system, multi-path power utilization safety system and automatic bus transfer interlocking control system

Technical Field

The utility model belongs to the technical field of power electrical equipment, concretely relates to fault direction safety device, power consumption safety coefficient, multichannel power consumption safety coefficient and be equipped with automatic switching interlocking control system.

Background

With the development of modern technology, the electric equipment of enterprises is more and more complex, and higher requirements are put forward on the safety, reliability and intelligent management of the operation of a power distribution system. When the low-voltage power circuit is powered off, a standby power supply automatic switching system (a standby automatic switching system) is often switched to a standby circuit to ensure continuous power utilization.

Because the backup power automatic switching system has high requirements on safety, the combined action of electrical interlocking and mechanical interlocking is needed to ensure the safety of switching-on after switching, but when the distance between two incoming line cabinets is far, the mechanical interlocking cannot be realized, and only single electrical interlocking can be adopted. However, the existing electrical interlock adopts a connection mode that the normally closed contacts of two breaking switches are connected in parallel and then connected in series to a closing signal of the other breaking switch, so that the safety is not high, and therefore, if the electrical interlock fails, when the main line is restored to be electrified and closed, the electrical interlock cannot play a protection role, explosion can also occur, and the stability and the safety of a low-voltage power distribution system cannot be ensured.

The patent application number CN201310397538.6 is a standby power supply automatic input device, and adopts the technical scheme of a double-position interlocking relay, so that the wiring mode of the secondary side wiring of a voltage transformer P is improved, the logic requirement of a complex standby power supply automatic input device is met, the design defects and the defects of primary equipment of a high-voltage distribution system are overcome, and the operation reliability of a power supply system is improved; the occurrence of major accidents such as protection failure, misoperation and the like caused by improper operation is avoided; the reliability of the microcomputer spare power automatic switching device is effectively improved, but the technical scheme adopts the double-position interlocking relay, the power supply contacts of the control ends of the starting coil and the reset coil of the double-position relay are required to be connected into the secondary side loops of the PT of the voltage transformers of the main power supply and the spare power supply, and the secondary side loops of the PT of the voltage transformers of the main power supply and the spare power supply are respectively and electrically connected with a main power bus 110KV-4 and a spare power bus 110KV-5 through the normally open contact of the double-position interlocking relay SWJ; the system needs to be matched with the original line equipment, the replacement and construction cost is high, and the safety of the backup power automatic switching cannot be guaranteed only by adopting a double-position interlocking relay SWJ to break down, so that the huge loss is caused to a power grid.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the defects in the prior art are overcome, and a fault guide safety device, a power utilization safety system and a multi-path power utilization safety system are provided, can be applied to a spare power automatic switching system, and can achieve the purposes of monitoring the power-on condition of a line in real time when a fault line is switched on after automatic switching of the spare power automatic switching, ensuring the safety of switching on and ensuring the safety of personnel and electric appliances.

In order to achieve the above object, the present invention provides a fail-safe device, which is characterized by comprising an on-off portion, wherein the two sides of the on-off portion are respectively an input side and an output side, the on-off portion is in an off state when electrified, and the fail-safe device is in the off state; the on-off part is in a conducting state when not electrified, and the fault guiding safety device is in a conducting state.

Preferably, the on-off part comprises one or three on-off units connected in series, and the normally closed relay or contactor is in an off state when electrified; the relay or the contactor of normally closed mode is in the on-state when not electrified, and three series connection the expert of one in the relay or the contactor of normally closed mode detects electrified, and it detects electrified to detect the relay or the contactor of normally closed mode is in the off-state, and three series connection the relay or the contactor of normally closed mode does not communicate, the on-off portion is electrified and is in the off-state.

Preferably, the input side comprises L, N two terminals for single phase or A, B, C, N four terminals for three phase; the output side comprises a first wire outlet terminal and a second wire outlet terminal.

The A, B, C three phases on the input side are not electrified, the first outgoing line and the second outgoing line are in a conduction connection state, and the fault guiding safety device is in a conduction state.

Any one of A, B, C three phases on the input side is electrified, and the first outgoing line and the second outgoing line are in an off state.

The power utilization safety system comprises an incoming line loop, wherein the incoming line loop is connected with a standby incoming line loop through a bus, and a disconnecting switch is arranged on the incoming line loop.

Preferably, the input side of the fault-oriented safety device is arranged at the lower opening of the disconnecting switch, and the output side of the fault-oriented safety device is connected in series with a closing control line.

The breaking switch is in a breaking state, a closing instruction is planned to be executed, if the lower port of the breaking switch is electrified, the fault guide safety device is in a breaking state, the closing control circuit is disconnected, and the breaking switch cannot be successfully closed;

the breaking switch is in a breaking state and is supposed to execute a closing instruction, if the lower port of the breaking switch is not electrified, the fault is guided to a conducting state of the safety device, the closing control circuit is conducted, and the breaking switch is successfully closed.

Preferably, the switching-on control circuit comprises a switching-on switch, a switching-on control coil and a switching-on power supply, and the switching-on control coil is used for controlling the breaking switch to be switched on.

The fault guiding safety device is in an off state if the lower port of the disconnecting switch is electrified, the switching-on control circuit is disconnected, a switching-on control coil is not electrified, and the disconnecting switch cannot be switched on successfully;

the breaking switch is in a breaking state, a closing instruction is to be executed, the closing switch is closed, if the lower port of the breaking switch is not electrified, the fault is guided to a conducting state of the safety device, the closing control circuit is conducted, the closing control coil is not electrified, and the breaking switch is successfully closed.

The electricity utilization safety system comprises a bus, wherein the bus is provided with a bus-coupled breaking switch, and is characterized by further comprising fault guide safety devices, and the fault guide safety devices are arranged on two sides of the bus-coupled breaking switch respectively;

furthermore, the input sides of the two fault guiding safety devices are arranged on two sides of the bus-coupled breaking switch, and the output sides of the fault guiding safety devices are connected in parallel and then connected in series to a closing control circuit of the bus-coupled breaking switch;

further, the closing control circuit comprises a closing switch, a closing control coil and a closing power supply, wherein the closing control coil is used for controlling the closing of the bus-tie breaking switch.

The multi-path power utilization safety system is powered by double power supplies, the power supply comprises a first commercial power supply and a second commercial power supply, the first commercial power supply and the second commercial power supply are respectively provided with a first incoming line breaking switch and a second incoming line breaking switch, and the multi-path power utilization safety system is characterized by further comprising a fault guiding safety device, and the first incoming line breaking switch and the second incoming line breaking switch are arranged at the lower opening of the fault guiding safety device.

Furthermore, the input sides of the two fault guiding safety devices are respectively arranged at the lower ports of the first inlet wire disconnecting switch and the second inlet wire disconnecting switch, and the output sides of the two fault guiding safety devices are respectively connected in series on the closing control circuit corresponding to the first inlet wire disconnecting switch and the second inlet wire disconnecting switch.

The utility model provides a multichannel power consumption safety coefficient adopts dual supply to take diesel generator power supply, and the power includes first mains supply, second mains supply, diesel generator, first mains supply second mains supply, diesel generator set up first inlet wire breaking switch, second inlet wire breaking switch, diesel generator inlet wire breaking switch on the inlet wire respectively, its characterized in that still includes fault-oriented safety device, first inlet wire breaking switch the second inlet wire breaking switch diesel generator inlet wire breaking switch lower mouthful all is provided with fault-oriented safety device.

Furthermore, the input sides of the three fault guiding safety devices are respectively arranged at the lower openings of the first inlet wire breaking switch, the second inlet wire breaking switch and the diesel power generation inlet wire breaking switch, and the output sides of the fault guiding safety devices are connected in series on the closing control circuit corresponding to the first inlet wire breaking switch, the second inlet wire breaking switch and the diesel power generation inlet wire breaking switch. The utility model provides a multichannel power consumption safety coefficient adopts two inlet wires female antithetical couplet structure, and the power includes first mains supply, second mains supply, first mains supply second mains supply set up first inlet wire section switch, second inlet wire section switch on the second mains supply inlet wire respectively, first mains supply second mains supply inlet wire passes through the bus-bar connection, the bus-bar sets up female antithetical couplet section switch, its characterized in that still includes fault guide safety device, first inlet wire section switch second inlet wire section switch lower mouth all is provided with fault guide safety device, female antithetical couplet section switch both sides set up respectively fault guide safety device.

Furthermore, the input sides of the two fault guiding safety devices are respectively arranged at the lower ports of the first inlet wire breaking switch and the second inlet wire breaking switch, the output sides of the fault guiding safety devices are connected in series on the corresponding closing control circuit of the first inlet wire breaking switch and the second inlet wire breaking switch,

furthermore, the input sides of the two fault guiding safety devices are arranged on two sides of the bus-coupled breaking switch, and the output sides of the fault guiding safety devices are connected in parallel and then connected in series to a closing control circuit of the bus-coupled breaking switch.

The utility model provides a multichannel power consumption safety coefficient adopts two inlet wires one female antithetical couplet to take the firewood to send out the use, and the power includes first mains supply, second mains supply, diesel generator, first mains supply set up first inlet wire section switch, second inlet wire section switch, diesel generation inlet wire section switch on second mains supply, the diesel generator inlet wire respectively, its characterized in that first inlet wire section switch the second inlet wire section switch diesel generation inlet wire section switch lower mouthful all is provided with fault direction safety device, first mains supply second mains supply, diesel generator inlet wire pass through the bus-bar connection, the bus-bar sets up female antithetical couplet section switch, female antithetical couplet section switch sets up fault direction safety device respectively.

Furthermore, the input sides of the three fault guiding safety devices are respectively arranged at the lower openings of the first inlet wire breaking switch, the second inlet wire breaking switch and the diesel power generation inlet wire breaking switch, and the output sides of the fault guiding safety devices are connected in series on the closing control circuit corresponding to the first inlet wire breaking switch, the second inlet wire breaking switch and the diesel power generation inlet wire breaking switch.

The spare power automatic switching interlocking control system is used for a low-voltage power distribution network and comprises a power supply, wherein the power supply comprises a first commercial power supply and a second commercial power supply, a first incoming line breaking switch and a second incoming line breaking switch are respectively arranged on incoming lines of the first commercial power supply and the second commercial power supply, the incoming lines of the first commercial power supply and the second commercial power supply are connected through a bus, the bus is provided with a bus-coupled breaking switch, the first incoming line breaking switch, the second incoming line breaking switch and a closing control circuit corresponding to the bus-coupled breaking switch are respectively provided with an electric interlocking device, the spare power automatic switching interlocking control system is characterized by further comprising a fault guide safety device, the fault guide safety device is respectively arranged at the lower port of the first incoming line breaking switch and the lower port of the second incoming line breaking switch, and the fault guide safety devices are respectively arranged at two sides of the bus;

Fault direction safety device, electric safety coefficient, multichannel power consumption safety coefficient, its beneficial effect does: the utility model provides a fault guide safety device, simple structure, reasonable in design, it is reliable to switch on or break off the realization mode and subtract the list, fault guide safety device installs simply, must not do the adjustment to the thread, only need to cut apart the switch lower mouthful or insert from both sides can, simple to operate, through setting up fault guide safety device, realize the real-time supervision circuit circular telegram condition, can ensure power consumption safety system, multichannel electricity safety system, spare power automatic switching system safe operation when the fault circuit closes a floodgate, avoid the emergence of accident, can ensure closing a floodgate safety, guarantee personnel and electrical apparatus safety;

install the both sides at the inlet wire switch end opening of main inlet wire and generating line with trouble direction safety device, when circuit switch closes a floodgate, real-time detection is about to close a floodgate line inlet wire switch end opening and generating line both sides have electricity, if there is electricity, then spare power automatic switching interlocking system and equipment disconnection on fault circuit or the generating line, control combined floodgate signal just can not switch on, in order to cause combined floodgate back short circuit, even guarantee to be equipped with circuit safety under the condition that automatic switching electric interlocking or mechanical interlocking damaged, avoid causing personnel and electrical apparatus to damage, and this system equipment is economical and practical, and the cost is lower.

The spare power automatic switching system with the fault guiding safety device can solve the problem of power utilization safety, so that the electrical interlocking has a safer guarantee mechanism, the equipment safety of important power supply and distribution scenes is avoided, and the continuity and the safety of power supply are greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of a fault-oriented safety device provided in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of an electricity consumption safety system provided in embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of an electric safety system provided in embodiment 3 of the present invention;

fig. 4 is a schematic structural diagram of a multi-path power consumption safety system provided in embodiment 4 of the present invention;

fig. 5 is a schematic structural diagram of a multi-path power consumption safety system according to embodiment 5 of the present invention;

fig. 6 is a schematic structural diagram of a multi-path power consumption safety system according to embodiment 6 of the present invention;

fig. 7 is a schematic structural diagram of a multi-path power consumption safety system according to embodiment 7 of the present invention;

fig. 8 is a schematic structural diagram of a backup power automatic switching interlock control system provided in embodiment 8 of the present invention;

fig. 9 is a schematic structural diagram of a fail-safe apparatus according to embodiment 9 of the present invention.

In the figure, 1, an on-off part, 11, an on-off unit, 2, an input side, 3, an output side, 31, a first outlet terminal, 32, a second outlet terminal, 4, a fault-guiding safety device, 41, a first inlet breaking switch fault-guiding safety device, 42, a second inlet breaking switch fault-guiding safety device, 43, a diesel-generating inlet breaking switch fault-guiding safety device, 44, a bus-coupled breaking switch fault-guiding safety device, 441, a first bus-coupled breaking switch fault-guiding safety device, 442, a second bus-coupled breaking switch fault-guiding safety device, 5, a breaking switch, 51, a first inlet breaking switch, 52, a second inlet breaking switch, 53, a diesel-generating inlet breaking switch, 6, a closing control line, 61, a closing switch, 62, a closing control coil, 63, a closing power supply, 7, an inlet loop, 71, a closing circuit, 71, The system comprises a first mains supply inlet wire 72, a second mains supply inlet wire 73, a diesel generator inlet wire 8, a bus 9, a bus-coupled breaking switch 10, an electrical interlocking device 101, a first inlet wire breaking switch electrical interlocking device 102, a second inlet wire breaking switch electrical interlocking device 103 and a bus-coupled breaking switch electrical interlocking device.

Detailed Description

The backup power automatic switching interlocking control system and the equipment of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

Fig. 1 is a schematic structural diagram of a fault-oriented safety device provided in embodiment 1 of the present invention. The fault guiding safety device comprises an on-off part 1, wherein an input side 2 and an output side 3 are respectively arranged at two sides of the on-off part, the input side 2 connected with the on-off part 1 is electrified, the output side 3 is in an off state, and the fault guiding safety device is in the off state; the input side 2 connected to the switching unit 1 is not charged, and the output side 3 is in a conducting state, and the fail-safe device is in a conducting state.

The on-off part 1 comprises three on-off units 11 which are connected in series, the on-off units 11 adopt normally closed relays or contactors, the three on-off units 11 are Y1, Y2 and Y3 respectively, and the normally closed relays or contactors are in an off state when electrified; the relay or the contactor in the normally closed mode is in a closed state when not electrified, any two terminals on the input side 2 in the three relays or the contactors in the normally closed mode connected in series are electrified, the relay or the contactor in the electrified state is in an open state, the three relays or the contactors in the normally closed mode connected in series are not connected, and the on-off part 1 is electrified and is in the open state.

Input side 2 includes A, B, C, N four terminals; the output side 33 includes a first outlet terminal 31 and a second outlet terminal 32.

Any two terminals A, B, C, N on the input side 2 are not charged, the first outgoing terminal 31 and the second outgoing terminal 32 are in a conducting connection state, and the fail-safe device 4 is in a conducting state.

Any two terminals A, B, C, N on the input side 2 are charged, the first outlet terminal 31 and the second outlet terminal 32 are in an open state, and the fail-safe device 4 is in an open state. A, B, C, N, the on-off unit 11 between the two live terminals is turned off, and the first and

second outlet terminals

31 and 32 are turned off, and the fail-safe device 4 is turned off.

Use example 1: the relay consists of three relays which default to a normally closed state, wherein the input side 2 is provided with A, B, C, N four terminals, and the output side 3 is provided with a first outlet terminal 31 and a second outlet terminal 32. Any two terminals in A, B, C, N on the input side 2 are not electrified, and the first outgoing terminal 31 and the second outgoing terminal 32 are in a conducting connection state; any two terminals A, B, C, N on the input side 2 are charged, and the first outlet terminal 31 and the second outlet terminal 32 are in an open state.

Example 2

Fig. 2 is a schematic structural view of an electricity consumption safety system provided in embodiment 2 of the present invention; the electricity utilization safety system comprises an incoming line loop 7, wherein a disconnecting switch 5 is arranged on the incoming line loop 7, and the electricity utilization safety system further comprises a fault guiding safety device 4, and the fault guiding safety device 4 is arranged at the lower opening of the disconnecting switch 5.

An input side 2 of the fault guide safety device 4 is arranged at the lower port of the breaking switch 5, and an output side 3 of the fault guide safety device 4 is connected in series with a closing control circuit 6.

The breaking switch 5 is in a breaking state, closing action of a closing switch is to be executed, the closing switch is a manual switch or a remote control switch, if the lower port of the breaking switch 5 is electrified, the output side 3 of the fault guide safety device 4 is in a breaking state, a closing control circuit is not conducted, and the breaking switch 5 cannot be successfully closed;

the breaking switch 5 is in a breaking state, closing action of a closing switch is to be executed, the closing switch is a manual switch or a remote control switch, if the lower port of the breaking switch 5 is not electrified, a fault is led to the conducting state of the output side 3 of the safety device 4, a closing control circuit is conducted, and the breaking switch 5 is successfully closed.

The closing control circuit 6 includes a closing switch 61, a closing control coil 62 and a closing power supply 63, the closing control coil 6 is used to control the disconnecting switch 5 to close, and other products used to control the disconnecting switch 5 to close may also be adopted, for example: an electric operating mechanism.

The disconnecting switch 5 is in a disconnecting state, closing action of a closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if the lower port of the disconnecting switch 5 is electrified, the output side 3 of the fault guide safety device 4 is in a disconnecting state, a closing control circuit is not conducted, a closing control coil 62 is not electrified, and the disconnecting switch 5 cannot be successfully closed;

when the disconnecting switch 5 is in a disconnecting state, closing action of a closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if the lower port of the disconnecting switch 5 is not electrified, the output side 3 of the fault guide safety device 4 is in a conducting state, a closing control circuit is conducted, a closing control coil 62 is electrified, and the disconnecting switch 5 is successfully closed;

use example 2: the power supply mode is an incoming line loop of commercial power or diesel power generation power supply, four terminals of the input end of the device are respectively connected to an A/B/C/N of the lower port of the breaking switch 5, and meanwhile, a control coil for controlling the breaking switch 5 to be switched on is connected to the output side 3 of the device in series. If the breaking switch 5 is in a breaking state and the lower port is electrified, the output side 3 of the fault guide safety device 4 is in a breaking state, the breaking switch 5 cannot be successfully switched on, and therefore electricity utilization safety under the condition is guaranteed; if the disconnecting switch 5 is in the open state and the lower port is not electrified, the output side 3 of the fault-oriented safety device 4 is in the conducting state, and the disconnecting switch 5 can be successfully switched on.

Example 3

Fig. 3 is a schematic structural diagram of an electric safety system provided in embodiment 3 of the present invention; the electricity utilization safety system comprises a bus 8, a bus-coupled breaking switch 9 and a fault guide safety device 4, wherein the bus 8 is provided with the bus-coupled breaking switch 9, and the fault guide safety devices 4 are respectively arranged on two sides of the bus-coupled breaking switch 9;

fault guiding safety devices 4 are respectively arranged on two sides of the bus-coupled breaking switch 9, and output sides 3 of the two fault guiding safety devices 4 are connected in parallel and then connected in series to a closing control circuit of the bus-coupled breaking switch 9;

the fault-oriented safety devices 4 arranged on both sides of the busbar section breaking switch 9 are defined as busbar section breaking switch fault-oriented safety devices 44, and the two busbar section breaking switch fault-oriented safety devices 44 are a first busbar section breaking switch fault-oriented safety device 441 and a second busbar section breaking switch fault-oriented safety device 442 respectively.

The bus-coupled breaking switch 9 is in a breaking state, closing action of a closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if one side of the bus-coupled breaking switch 9 is not electrified, and the other side of the bus-coupled breaking switch is electrified, the output side 3 of the bus-coupled breaking switch fault guide safety device 44 at the non-electrified side is in a conducting state, and the breaking switch is successfully closed.

The bus-coupled breaking switch 9 is in a breaking state, closing action of a closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if both sides of the bus-coupled breaking switch 9 are not electrified, the output sides 3 of the bus-coupled breaking switch fault guide safety devices 44 on both sides are in a conducting state, and the breaking switch is successfully closed.

The bus-coupled breaking switch 9 is in a breaking state, closing action of a closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if both sides of the bus-coupled breaking switch 9 are electrified, output sides 3 of the bus-coupled breaking switch fault guide safety devices 44 on both sides are in a breaking state, and the breaking switch cannot be successfully closed.

The closing control circuit 6 comprises a closing switch 61, a closing control coil 62 and a closing power supply 63, and the closing control coil 62 is used for controlling the closing of the bus disconnecting switch 9. Other products for controlling the closing of the bus-tie breaking switch 9 can also be adopted, such as: an electric operating mechanism. The bus-coupled breaking switch 9 is in a breaking state, closing action of a closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if one side of the bus-coupled breaking switch 9 is not electrified and the other side of the bus-coupled breaking switch is electrified, the output side 3 of the bus-coupled breaking switch fault guide safety device 44 at the non-electrified side is in a conducting state, a closing control line is conducted, and the breaking switch is successfully closed.

The bus-coupled breaking switch 9 is in a breaking state, closing action of the closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if both sides of the bus-coupled breaking switch 9 are not electrified, the output sides 3 of the bus-coupled breaking switch fault guide safety devices 44 on both sides are in a conducting state, a closing control circuit is conducted, and the breaking switch is successfully closed.

The bus-coupled breaking switch 9 is in a breaking state, closing action of the closing switch 61 is to be executed, the closing switch 61 is a manual switch or a remote control switch, if both sides of the bus-coupled breaking switch 9 are electrified, the output sides 3 of the bus-coupled breaking switch fault guide safety devices 44 on both sides are in a breaking state, a closing control circuit is not conducted, and the breaking switch cannot be successfully closed.

Use example 3: since the disconnecting switch does not divide the upper opening and the lower opening of the bus bar 8 of the bus bar 9, a first disconnecting switch fault guide safety device 441 and a second disconnecting switch fault guide safety device 442 need to be respectively installed on two sides of the disconnecting switch 9, and a/B/C/N signals on two sides of the disconnecting switch 9 are connected to a/B/C/N terminals of the first disconnecting switch fault guide safety device 441 and the second disconnecting switch fault guide safety device 442. Then, the output sides 3 of the first busbar disconnecting and disconnecting switch fault guiding safety device 441 and the second busbar disconnecting and disconnecting switch fault guiding safety device 442 are connected in parallel first and then connected in series to the closing control coil 62. If the bus-coupled breaking switch 9 is in a breaking state, if both sides of the bus-coupled breaking switch 9 are powered on at the same time, the bus-coupled breaking switch 9 cannot be successfully switched on, so that the power utilization safety under the condition is ensured; if the bus-coupled breaking switch 9 is in a breaking state and one side of the bus-coupled breaking switch 9 has no electricity, the bus-coupled breaking switch 9 can be successfully switched on.

Example 4

Fig. 4 is a schematic structural diagram of a multi-path power consumption safety system provided in embodiment 4 of the present invention; the multi-path electricity safety system is powered by double power supplies, the power supply comprises a first commercial power supply and a second commercial power supply, a first commercial power supply inlet wire 71 and a second commercial power supply inlet wire 72 are connected through a bus 8, a first inlet wire breaking switch 51 and a second inlet wire breaking switch 52 are respectively arranged on the first commercial power supply inlet wire 71 and the second commercial power supply inlet wire 72, the multi-path electricity safety system further comprises a fault guide safety device 4, and fault guide safety devices 4 are respectively arranged at lower ports of the first inlet wire breaking switch 51 and the second inlet wire breaking switch 52.

The input sides of the two fault guiding safety devices 4 are respectively arranged at the lower ports of the first inlet wire disconnecting switch 51 and the second inlet wire disconnecting switch 52, the output sides 3 of the two fault guiding safety devices 4 are connected in series on a closing control circuit corresponding to the first inlet wire disconnecting switch 51 and the second inlet wire disconnecting switch 52, the closing control circuit comprises a closing switch 61, a closing control coil 62 and a closing power supply 63, and the closing control coil 62 is used for controlling the closing of the disconnecting switches.

The fault-oriented safety devices 4 arranged at the lower ports of the first inlet line disconnecting switch 51 and the second inlet line disconnecting switch 52 are respectively defined as a first inlet line disconnecting switch fault-oriented safety device 41 and a second inlet line disconnecting switch fault-oriented safety device 42.

The first inlet wire breaking switch 51 is in a breaking state, closing action of a closing switch 61 of the first inlet wire breaking switch 51 corresponding to a closing control circuit is to be executed, if a lower port of the first inlet wire breaking switch 51 is electrified, an output side 3 of the first inlet wire breaking switch fault guide safety device 41 is in a breaking state, the first inlet wire breaking switch 51 corresponding to the closing control circuit is not conducted, a closing control coil 62 is not electrified, the first inlet wire breaking switch 51 cannot be successfully closed, and therefore the fault guide safety effect is achieved;

the first inlet wire breaking switch 51 is in a breaking state, closing action of a closing switch 61 of the first inlet wire breaking switch 51 corresponding to a closing control circuit is to be executed, if the lower port of the first inlet wire breaking switch 51 is not electrified, the output side 3 of the first inlet wire breaking switch fault guide safety device 41 is in a conducting state, the closing control circuit of the first inlet wire breaking switch 51 is conducted, a closing control coil 62 is electrified, the first inlet wire breaking switch 51 is successfully closed, and switching is performed to a standby circuit to ensure continuous electricity utilization;

use example 4: the first inlet line disconnecting switch fault guiding safety device 41 and the second inlet line disconnecting switch fault guiding safety device 42 are respectively installed at the lower ports of the two mains supply disconnecting switches, namely the first inlet line disconnecting switch 51 and the second inlet line disconnecting switch 52. The two mains section switches, i.e. the first incoming section switch 51 and the second incoming section switch 52, are not allowed to be switched on simultaneously.

If the first mains supply is electrified, after the first inlet wire breaking switch 51 is switched on, the second mains supply inlet wire 72 is electrified, the second inlet wire breaking switch 52 is in a breaking state, the misoperation is to execute the closing action of the closing switch 61 of the second inlet wire breaking switch 52 corresponding to the closing control circuit, the first mains supply inlet wire 71 is electrified, the second inlet wire breaking switch fault guide safety device 42 at the lower port of the second inlet wire breaking switch 52 detects that the lower port of the second inlet wire breaking switch 52 is electrified, the output side 3 of the second inlet wire breaking switch fault guide safety device 42 is in a breaking state, the second inlet wire breaking switch 52 corresponding to the closing control circuit is not conducted, the closing control coil 62 is not electrified, the second inlet wire breaking switch 52 cannot be successfully switched on, and the electrified first mains supply inlet wire 71 and the electrified second mains supply inlet wire 72 are prevented from being conducted, so as to prevent accidents, thereby playing a role in fault guiding safety;

similarly, if the second mains supply has electricity, after the second inlet wire disconnecting switch 51 is switched on, the first mains supply has electricity, the first inlet wire disconnecting switch 51 is in a disconnecting state, misoperation is planned to execute the closing action of the closing switch 61 of the first inlet wire disconnecting switch 51 corresponding to the closing control line, the second mains supply inlet wire 72 has electricity, the first inlet wire disconnecting switch fault guiding safety device 41 detects that electricity exists at the lower port of the first inlet wire disconnecting switch 51, the output side 3 of the first inlet wire disconnecting switch fault guiding safety device 41 is in a disconnecting state, the first inlet wire disconnecting switch 51 is not conducted corresponding to the closing control line, the closing control coil 62 is not electrified, the first inlet wire disconnecting switch 51 cannot be successfully switched on, and the prevented electrified first mains supply inlet wire 71 and the electrified second mains supply inlet wire 72 are conducted, so that the fault guiding safety function is achieved;

if the second commercial power supply is not powered, when the second incoming line disconnecting switch 52 is in a disconnected state, the first commercial power supply is powered, the first incoming line disconnecting switch 51 is in a disconnected state, closing action of a closing switch 61 of the first incoming line disconnecting switch 51 corresponding to a closing control circuit is to be executed, the incoming line 72 of the second commercial power supply is not powered, the first incoming line disconnecting switch fault guiding safety device 41 detects that the lower port of the first incoming line disconnecting switch 51 is not powered, the output side 3 of the first incoming line disconnecting switch fault guiding safety device 41 is in a connected state, the first incoming line disconnecting switch 51 is connected corresponding to a closing control circuit, the closing control coil 62 is powered, the first incoming line disconnecting switch 51 can be successfully closed, and the first incoming line disconnecting switch is switched to the first commercial power supply incoming line 71 to ensure power continuity.

Similarly, if the first mains supply is not powered, when the first incoming line disconnecting switch 51 is in an off state, the second mains supply is powered, the second incoming line disconnecting switch 52 is in an off state, a closing switch 61 of the second incoming line disconnecting switch 52 corresponding to the closing control line is to be executed, the incoming line 71 of the first mains supply is not powered, the second incoming line disconnecting switch fault guiding safety device 42 detects that the lower port of the second incoming line disconnecting switch 52 is not powered, the output side 3 of the second incoming line disconnecting switch fault guiding safety device 42 is in an on state, the second incoming line disconnecting switch 52 is switched on corresponding to the closing control line, the closing control coil 62 is powered, the second incoming line disconnecting switch 52 can be successfully closed, and the second incoming line disconnecting switch is switched to the second mains supply incoming line 72 to ensure continuous power utilization.

Example 5

Fig. 5 is a schematic structural diagram of a multi-path power consumption safety system according to embodiment 5 of the present invention; a multi-path electricity safety system is powered by a diesel generator with double power supplies, the power supply comprises a first commercial power supply, a second commercial power supply and the diesel generator, a first inlet wire breaking switch 51, a second inlet wire breaking switch 52 and a diesel generator inlet wire breaking switch 53 are respectively arranged on a first commercial power supply inlet wire 71, a second commercial power supply inlet wire 72 and a diesel generator inlet wire 73, the multi-path electricity safety system further comprises a fault guide safety device 4, and the fault guide safety device 4 is arranged at the lower ports of the first inlet wire breaking switch 51, the second inlet wire breaking switch 52 and the diesel generator inlet wire breaking switch 53.

The input sides of the three fault guiding safety devices 4 are respectively arranged at the lower ports of a first inlet wire disconnecting switch 51, a second inlet wire disconnecting switch 52 and a diesel generator inlet wire 73, the output sides 3 of the fault guiding safety devices 4 are connected in series on corresponding closing control circuits, each closing control circuit comprises a closing switch 61, a closing control coil 62 and a closing power supply 63, and the closing control coils 62 are used for controlling the disconnecting switches to close.

The fault guiding safety devices arranged at the lower ports of the first inlet line disconnecting switch 51, the second inlet line disconnecting switch 52 and the diesel power generation inlet line disconnecting switch 53 are respectively defined as a first inlet line disconnecting switch fault guiding safety device 41, a second inlet line disconnecting switch fault guiding safety device 42 and a diesel power generation inlet line disconnecting switch fault guiding safety device 43.

Use example 5: the lower openings of the first inlet wire breaking switch 51, the second inlet wire breaking switch 52 and the diesel power generation inlet wire breaking switch 53 are respectively provided with a first inlet wire breaking switch fault guiding safety device 41, a second inlet wire breaking switch fault guiding safety device 42 and a diesel power generation inlet wire breaking switch fault guiding safety device 43, and the first inlet wire breaking switch 51, the second inlet wire breaking switch 52 and the diesel power generation inlet wire breaking switch 53 are not allowed to be switched on simultaneously. If the first mains supply is electrified, after the first inlet line breaking switch 51 is switched on, because the lower ports of the second inlet line breaking switch 52 and the diesel power generation inlet line breaking switch 53 are electrified, the fault guiding safety device 42 of the second inlet line breaking switch and the fault guiding safety device 43 of the diesel power generation inlet line breaking switch detect that the lower ports of the second inlet line breaking switch 52 and the diesel power generation inlet line breaking switch 53 are electrified, the output sides 3 of the corresponding second inlet line disconnecting switch fault guiding safety device 42 and the diesel power generation inlet line disconnecting switch fault guiding safety device 43 are in a disconnected state, the corresponding closing control lines of the second inlet line disconnecting switch 52 and the diesel power generation inlet line disconnecting switch 53 are not conducted, the closing control coil 62 is not electrified, the second inlet line disconnecting switch 52 and the diesel power generation inlet line disconnecting switch 53 cannot be successfully closed, accidents are prevented, and therefore the fault guiding safety effect is achieved;

similarly, if the second commercial power source is electrified, after the second incoming line disconnecting switch 52 is switched on, because the lower ports of the first incoming line disconnecting switch 51 and the diesel power generation incoming line disconnecting switch 53 are electrified, the first incoming line disconnecting switch fault guiding safety device 41 and the diesel power generation incoming line disconnecting switch fault guiding safety device 43 detect that the lower ports of the first incoming line disconnecting switch 51 and the diesel power generation incoming line disconnecting switch 53 are electrified, the output side 3 of the first incoming line disconnecting switch fault guiding safety device 41 and the diesel power generation incoming line disconnecting switch fault guiding safety device 43 is in an off state, the first incoming line disconnecting switch 51 and the diesel power generation incoming line disconnecting switch 53 are not conducted corresponding to a switching-on control circuit, and the switching-on control coil 62 is not electrified, therefore, the first inlet line breaking switch 51 and the diesel power generation inlet line breaking switch 53 cannot be switched on, and therefore the fault guiding and safety function is achieved;

similarly, if the diesel power generation incoming line 73 has electricity, after the diesel power generation incoming line disconnecting switch 53 is switched on, because the lower ports of the first incoming line disconnecting switch 51 and the second incoming line disconnecting switch 52 have electricity, the first incoming line disconnecting switch fault guide safety device 41 and the second incoming line disconnecting switch fault guide safety device 42 detect that the lower ports of the first incoming line disconnecting switch 51 and the second incoming line disconnecting switch 52 have electricity, the output sides 3 of the first incoming line disconnecting switch fault guide safety device 41 and the second incoming line disconnecting switch fault guide safety device 42 are in a disconnecting state, the first incoming line disconnecting switch 51 and the second incoming line disconnecting switch 52 are not conducted corresponding to a switching-on control circuit, and the switching-on control coil 62 is not electrified, so that the first incoming line disconnecting switch 51 and the second incoming line disconnecting switch 52 cannot be switched on, and the fault guide safety function is achieved.

Example 6

Fig. 6 is a schematic structural diagram of a multi-path power consumption safety system according to embodiment 6 of the present invention; a multi-path electricity safety system adopts a two-inlet-one-bus connection structure, a power supply comprises a first commercial power supply and a second commercial power supply, a first inlet wire breaking switch 51 and a second inlet wire breaking switch 52 are respectively arranged on a first commercial power supply inlet wire 71 and a second commercial power supply inlet wire 72, the first commercial power supply inlet wire 71 and the second commercial power supply inlet wire 72 are connected through a bus 8, the bus 8 is provided with a bus connection breaking switch 9, the multi-path electricity safety system also comprises a fault guiding safety device 4, the lower ports of the first inlet wire breaking switch 51 and the second inlet wire breaking switch 52 are respectively provided with the fault guiding safety device 4, and the two sides of the bus connection breaking switch 9 are respectively provided with the fault guiding safety devices 4.

The input sides of the two fault guiding safety devices 4 are respectively arranged at the lower ports of a first inlet wire breaking switch 51 and a second inlet wire breaking switch 52, and the output sides 3 of the first inlet wire breaking switch 51 and the second inlet wire breaking switch 52, which correspond to the fault guiding safety devices 4, are connected in series on the closing control circuit corresponding to the first inlet wire breaking switch 51 and the second inlet wire breaking switch 52; the input sides of the other two fault guide safety devices 4 are respectively provided with two sides of a bus-coupled breaking switch 9, and the output sides 3 of the fault guide safety devices 4 on the two sides of the bus-coupled breaking switch 9 are connected in parallel and then connected in series to a closing control circuit corresponding to the bus-coupled breaking switch 9;

The closing control circuit comprises a closing switch 61, a closing control coil 62 and a closing power supply 63, wherein the closing control coil 62 is used for controlling the breaking switch to close.

Use example 6: a first inlet line breaking switch fault guiding safety device 41, a second inlet line breaking switch fault guiding safety device 42, a first bus-coupled breaking switch fault guiding safety device 441, a second bus-coupled breaking switch fault guiding safety device 442 are respectively installed at the lower opening of the first inlet line breaking switch 51, the lower opening of the second inlet line breaking switch 52 and two sides of the bus-coupled breaking switch 9, the first inlet line breaking switch 51, the second inlet line breaking switch 52 and the bus-coupled breaking switch 9 are not allowed to be switched on simultaneously, and two breaking switches are allowed to be switched on maximally.

If the first mains supply is powered on, the first inlet line disconnecting switch 51 is in a switch-on state, the second mains supply is powered on, and the second inlet line disconnecting switch 52 is in a switch-on state, because both sides of the bus-coupled disconnecting switch 9 are powered on, the output sides 3 of the first bus-coupled disconnecting switch fault guiding safety device 441 and the second bus-coupled disconnecting switch fault guiding safety device 442 are in a switch-off state, a switch-on control circuit corresponding to the bus-coupled disconnecting switch 9 is not conducted, and the switch-on control coil 62 is not powered on, so that the bus-coupled disconnecting switch 9 cannot be switched on, and the fault guiding safety effect is achieved.

If the first commercial power supply is powered on, the first incoming line breaking switch 51 is in a switch-on state, the second commercial power supply is not powered on, the second incoming line breaking switch 52 is in a switch-off state, the first incoming line breaking switch 51 side of the bus-coupled breaking switch 9 is powered on, the second incoming line breaking switch 52 side is not powered on, the output side 3 of the first bus-coupled breaking switch fault guide safety device 441 is in a switch-off state, the output side 3 of the second bus-coupled breaking switch fault guide safety device 442 is in a switch-on state, the output side 3 of the first bus-coupled breaking switch fault guide safety device 441 and the output side 3 of the second bus-coupled breaking switch fault guide safety device 442 are connected in parallel and then connected in series to a corresponding switch-on control line of the bus-coupled breaking switch 9, the bus-coupled breaking switch 9 can be switched on, and if the second commercial power supply is powered on after the bus-coupled breaking switch 9 is switched on, the second incoming line breaking switch 52 cannot be switched on because the lower port of the second, thereby playing a role in fault guiding safety. In this case, the bus-coupled disconnecting switch 9 can be switched off first, and then the second incoming line disconnecting switch 52 can be switched on because the lower port of the second incoming line disconnecting switch 52 is not electrified.

Similarly, if the second commercial power source is powered on and the second incoming line disconnecting switch 52 is in a switch-on state, the first commercial power source is not powered on and the first incoming line disconnecting switch 51 is in a switch-off state, the second incoming line disconnecting switch 52 side of the bus-coupled disconnecting switch 9 is powered on and the first incoming line disconnecting switch 51 side is not powered on, the output side 3 of the second bus-coupled disconnecting switch fault-oriented safety device 442 is in a switch-off state, the output side 3 of the first bus-coupled disconnecting switch fault-oriented safety device 441 is in a switch-on state, the output side 3 of the first bus-coupled disconnecting switch fault-oriented safety device 441 and the output side 3 of the second bus-coupled disconnecting switch fault-oriented safety device 442 are connected in parallel and then connected in series to the control line corresponding to the bus-coupled disconnecting switch 9 to switch on, the bus-coupled disconnecting switch 9 can be switched on, and if the first commercial power source is powered on after the bus-coupled disconnecting switch 9 is switched on, the first incoming line disconnecting switch 51 cannot be switched on, thereby playing a role in fault guiding safety. In this case, the bus-coupled disconnecting switch 9 can be first switched off, and then the first incoming line disconnecting switch 51 can be switched on because the lower port of the first incoming line disconnecting switch 51 is not electrified.

Example 7

Fig. 7 is a schematic structural diagram of a multi-path power consumption safety system according to embodiment 7 of the present invention; a multi-path electricity safety system adopts a use mode of two incoming lines and one bus combined with diesel, a power supply comprises a first commercial power supply, a second commercial power supply and a diesel generator, a first incoming line breaking switch 51, a second incoming line breaking switch 52 and a diesel generator incoming line breaking switch 53 are respectively arranged on a first commercial power supply incoming line 71, a second commercial power supply incoming line 72 and a diesel generator incoming line 73, fault guide safety devices 4 are respectively arranged at lower ports of the first incoming line breaking switch 51, the second incoming line breaking switch 52 and the diesel generator incoming line breaking switch 53, the first commercial power supply incoming line 71, the second commercial power supply incoming line 72 and the diesel generator incoming line 73 are connected through a bus 8, a bus 8 is provided with a bus combined switch 9, and the bus combined breaking switch 9 is respectively provided with the fault guide safety devices 4.

The output side 3 of the fault-oriented safety device 4 is connected in series to a corresponding closing control circuit, the closing control circuit comprises a closing switch 61, a closing control coil 62 and a closing power supply 63, and the closing control coil 62 is used for controlling the breaking switch to close.

The fault guiding safety devices 4 arranged at the lower ports of the first inlet line disconnecting switch 51, the second inlet line disconnecting switch 52 and the diesel power generation inlet line disconnecting switch 53 are respectively defined as a first inlet line disconnecting switch fault guiding safety device 41, a second inlet line disconnecting switch fault guiding safety device 42 and a diesel power generation inlet line disconnecting switch fault guiding safety device 43.

The fault-oriented safety devices 4 arranged on two sides of the busbar section breaking switch 9 are defined as busbar section breaking switch fault-oriented safety devices 44, and the busbar section breaking switch fault-oriented safety devices 44 are a first busbar section breaking switch fault-oriented safety device 441 and a second busbar section breaking switch fault-oriented safety device 442 respectively.

Use example 7: a first inlet wire breaking switch fault guiding safety device 41, a second inlet wire breaking switch fault guiding safety device 42, a diesel power generation inlet wire breaking switch fault guiding safety device 43, a first bus-coupled breaking switch fault guiding safety device 441 and a second bus-coupled breaking switch fault guiding safety device 442 are arranged at two sides of a first inlet wire breaking switch 51, a second inlet wire breaking switch 52, a lower opening of a diesel power generation inlet wire breaking switch 53 and a bus-coupled breaking switch 9, and the first inlet wire breaking switch 51, the second inlet wire breaking switch 52, the diesel power generation inlet wire breaking switch 53 and the bus-coupled breaking switch 9 can be switched on by two breaking switches at most.

If the first mains supply is electrified, the first inlet wire breaking switch 51 is in a switch-on state, the second mains supply is electrified, and the second inlet wire breaking switch 52 is in a switch-on state, the bus-coupled breaking switch 9 cannot be switched on because both sides of the bus-coupled breaking switch 9 are electrified, and meanwhile, the diesel power generation inlet wire breaking switch 53 cannot be switched on because the lower port of the diesel power generation inlet wire breaking switch 53 is electrified, so that the fault guiding safety effect is achieved.

If the first mains supply is electrified and the first inlet wire disconnecting switch 51 is in a switching-on state, the second mains supply is not electrified and the second inlet wire disconnecting switch 52 is in a switching-off state, the diesel generator (standby generator) is not electrified and the diesel generating inlet wire disconnecting switch 53 is in a switching-off state, the bus-coupled disconnecting switch 9 can be switched on because only one side is electrified, and after the bus-coupled disconnecting switch 9 is switched on, if the second mains supply is electrified, the second inlet wire disconnecting switch 52 cannot be switched on because the lower port of the second inlet wire disconnecting switch 52 is electrified, so that the fault guiding safety effect is achieved. In this case, the bus-coupled disconnecting switch 9 can be switched off first, and then the second incoming line disconnecting switch 52 can be switched on because the lower port of the second incoming line disconnecting switch 52 is not electrified.

If the first mains supply is electrified and the first inlet wire breaking switch 51 is in a switch-on state, the second mains supply is not electrified and the second inlet wire breaking switch 52 is in a switch-off state, and the diesel generator (standby generator) is electrified and the diesel generating inlet wire breaking switch 53 is in a switch-on state, the bus-coupled breaking switch 9 cannot be switched on because both sides of the bus-coupled breaking switch 9 are electrified, and meanwhile, the diesel generating inlet wire breaking switch 53 is electrified at the lower port, the second inlet wire breaking switch 52 is electrified at the lower port, and the second inlet wire breaking switch 52 cannot be switched on, so that the fault guiding safety effect is achieved. In this case, if the second mains supply is powered on and the diesel oil power generation inlet line disconnecting switch 53 is switched off first, then the second inlet line disconnecting switch 52 can be switched on because the lower port of the second inlet line disconnecting switch 52 is not electrified.

If the second mains supply is electrified and the second inlet wire disconnecting switch 52 is in a switch-on state, the first mains supply is not electrified and the first inlet wire disconnecting switch 51 is in a switch-off state, the bus-coupled disconnecting switch 9 can be switched on because only one side is electrified, and after the bus-coupled disconnecting switch 9 is switched on, if the first mains supply is electrified, the first inlet wire disconnecting switch 5 cannot be switched on because the lower port of the first inlet wire disconnecting switch 5 is electrified, so that the fault guiding safety effect is achieved. Meanwhile, the lower opening of the diesel power generation inlet wire breaking switch 53 is electrified, and the diesel power generation inlet wire breaking switch 53 cannot be switched on, so that the fault guiding safety effect is achieved. In this case, the bus-coupled disconnecting switch 9 can be switched off first, and then the first incoming line disconnecting switch 51 can be switched on because the lower port of the first incoming line disconnecting switch 51 has no power.

If the first commercial power supply and the second commercial power supply are both in power failure and the first inlet wire breaking switch 51 and the second inlet wire breaking switch 52 are both in brake opening, the diesel generator is in a starting state, the diesel power generation inlet wire breaking switch 53 is in a switch-on state, and the bus-bar breaking switch 9 is in a switch-off state. If the second mains supply is powered on, the second inlet line disconnecting switch 52 cannot be switched on because the lower port of the second inlet line disconnecting switch 52 is powered on; when the first mains supply is powered on, no electricity is left at the lower opening of the first inlet wire disconnecting switch 51, and the normal switching-on of the first inlet wire disconnecting switch 51 is not influenced.

If the first commercial power supply and the second commercial power supply are both in power failure, and the first inlet wire breaking switch 51 and the second inlet wire breaking switch 52 are both in brake opening, the diesel generator is in a starting state, and the diesel generating inlet wire breaking switch 53 is in a switch-on state, the bus-coupled breaking switch 9 can be switched on because only one side is electrified, and after the bus-coupled breaking switch 9 is switched on, if the second commercial power supply is electrified, the second inlet wire breaking switch 52 cannot be switched on because the lower port of the second inlet wire breaking switch 52 is electrified; when the first mains supply is powered on, if the lower port of the first incoming line disconnecting switch 51 is powered on, the first incoming line disconnecting switch 51 cannot be switched on.

Example 8

Fig. 8 is a schematic structural diagram of a backup power automatic switching interlock control system provided in embodiment 8 of the present invention. The spare power automatic switching interlocking control system is used for a low-voltage distribution network and comprises a power supply, wherein the power supply comprises a first commercial power supply and a second commercial power supply, a first incoming line breaking switch 51 and a second incoming line breaking switch 52 are respectively arranged on a first commercial power incoming line 71 and a second commercial power incoming line 72, the first commercial power incoming line 71 and the second commercial power incoming line 72 are connected through a bus 8, the bus 8 is provided with a bus-coupled breaking switch 9, the first incoming line breaking switch 51, the second incoming line breaking switch 52 and the bus-coupled breaking switch 9 are respectively provided with an electric interlocking device 10 corresponding to a closing control circuit, the first incoming line breaking switch electric interlocking device 101, the second incoming line breaking switch electric interlocking device 102 and the bus-coupled breaking switch electric interlocking device 103 are respectively further provided with a fault guiding safety device 4, and fault guiding safety devices 4 are respectively arranged at lower ports of the first incoming line breaking switch 51 and the second incoming line breaking switch 52, fault guiding safety devices 4 are respectively arranged on two sides of the bus-coupled breaking switch 9;

The first incoming line disconnecting switch electric interlocking device 101 comprises an auxiliary contact of a second incoming line disconnecting switch 52 and an auxiliary contact of a bus-coupled disconnecting switch 9 which are connected in parallel, the second incoming line disconnecting switch electric interlocking device 102 comprises an auxiliary contact of a first incoming line disconnecting switch 51 and an auxiliary contact of a bus-coupled disconnecting switch 9 which are connected in parallel, and the bus-coupled disconnecting switch electric interlocking device 103 comprises an auxiliary contact of the first incoming line disconnecting switch 51 and an auxiliary contact of the second incoming line disconnecting switch 52 which are connected in parallel. The state of the auxiliary contact is opposite to that of the breaking switch, namely the state of the auxiliary contact is disconnected when the breaking switch is switched on, and the state of the auxiliary contact is closed when the breaking switch is switched off. For example, when the second incoming line disconnecting switch 52 is switched on, the auxiliary contact of the second incoming line disconnecting switch 52 is in an open state.

The input sides 2 of the first inlet line disconnecting switch fault guiding safety device 41 and the second inlet line disconnecting switch fault guiding safety device 42 are respectively arranged at the lower openings of a first inlet line disconnecting switch 51 and a second inlet line disconnecting switch 52; the output sides 3 of the first inlet line disconnecting switch fault guiding safety device 41 and the second inlet line disconnecting switch fault guiding safety device 42 are connected in series on the closing control circuit corresponding to the first inlet line disconnecting switch 51 and the second inlet line disconnecting switch 52.

Input sides 2 of the first busbar section breaking switch fault guiding safety device 441 and the second busbar section breaking switch fault guiding safety device 442 are arranged on two sides of a busbar section breaking switch 9, and output sides 3 of the first busbar section breaking switch fault guiding safety device 441 and the second busbar section breaking switch fault guiding safety device 442 are connected in parallel and then connected in series to a closing control circuit 6 corresponding to the busbar section breaking switch 9.

The closing control circuit comprises an electric interlocking device 10, a closing switch 61, a closing control coil 62 and a closing power supply 63, wherein the closing control coil 62 is used for controlling the breaking switch to close.

Use example 8: as shown in fig. 8, in the switching-on control system of the two-inlet-one-bus-coupler spare power automatic switching mode, the fault-oriented safety device 4 is arranged in a conventional electric interlocking circuit, that is, the fault-oriented safety device 4 is arranged in a switching-on control circuit in which the electric interlocking device is arranged, so that the switching-on safety is improved. The traditional spare power automatic switching electric interlocking is realized by interlocking among the disjunction switches, and in the closing control line of each disjunction switch of the two-inlet-one bus-coupler, the auxiliary contacts of the other two disjunction switches are arranged in a circuit, namely the auxiliary contacts of the other two disjunction switches are firstly connected in parallel and then connected in series in the closing control line of each disjunction switch; the state of the auxiliary contact is opposite to that of the breaking switch, namely the state of the auxiliary contact is disconnected when the breaking switch is switched on, and the state of the auxiliary contact is closed when the breaking switch is switched off. Because the interlocking relationship exists among the auxiliary contacts among the first inlet wire disconnecting switch 51, the second inlet wire disconnecting switch 52 and the bus-connected disconnecting switch 9, at most two disconnecting switches are allowed to be switched on, but the requirement on the auxiliary contacts and the connecting line is higher in the mode, and the electrical interlocking can possibly fail under the condition that the connecting line is abnormal in outlet or the auxiliary contacts are damaged, so that the switching-on safety can be ensured under the condition that the conventional electrical interlocking fails and the electrical safety is improved after the fault guide safety device 4 is added, and the method specifically comprises the following steps:

the fault guide safety devices 4 are mounted at the lower ports of the first inlet wire breaking switch 51 and the second inlet wire breaking switch 52 and at the two sides of the bus-connected breaking switch 9, three breaking switches are not allowed to be switched on simultaneously, and two breaking switches are allowed to be switched on maximally.

If the first mains supply is powered on and the first incoming line disconnecting switch 51 is in a closing state, the second mains supply is not powered on and the second incoming line disconnecting switch 52 is in a disconnecting state, the first incoming line disconnecting switch 51 side of the bus-coupled disconnecting switch 9 is powered on and the second incoming line disconnecting switch 52 side is not powered on, the output side 3 of the first bus-coupled disconnecting switch fault guide safety device 441 is in a disconnecting state, the output side 3 of the second bus-coupled disconnecting switch fault guide safety device 442 is in a conducting state, the output side 3 of the first bus-coupled disconnecting switch fault guide safety device 441 and the output side 3 of the second bus-coupled disconnecting switch fault guide safety device 442 are connected in parallel and then connected in series to a closing control line corresponding to the bus-coupled disconnecting switch 9, and the bus-coupled disconnecting switch 9 can be closed; after the bus-tie breaking switch 9 is switched on, if a second mains supply is powered on, the second inlet line breaking switch 52 cannot be switched on because the lower port of the second inlet line breaking switch 52 is powered on, so that the fault guiding safety effect is achieved. In this case, the bus-coupled disconnecting switch 9 can be switched off first, and then the second incoming line disconnecting switch 52 can be switched on because the lower port of the second incoming line disconnecting switch 52 is not electrified.

Similarly, if the second mains supply is powered on and the second incoming line disconnecting switch 52 is in a switch-on state, the first mains supply is not powered on and the first incoming line disconnecting switch 51 is in a switch-off state, the second incoming line disconnecting switch 52 side of the bus-coupled disconnecting switch 9 is powered on and the first incoming line disconnecting switch 51 side is not powered on, the output side 3 of the second bus-coupled disconnecting switch fault guide safety device 442 is in a switch-off state, the output side 3 of the first bus-coupled disconnecting switch fault guide safety device 441 is in a switch-on state, the output side 3 of the first bus-coupled disconnecting switch fault guide safety device 441 and the output side 3 of the second bus-coupled disconnecting switch fault guide safety device 442 are connected in parallel and then connected in series to a corresponding control line of the bus-coupled disconnecting switch 9, and the bus-coupled disconnecting switch 9 can be switched on; after the bus tie breaking switch 9 is switched on, if a first mains supply is powered on, the first inlet line breaking switch 51 cannot be switched on because the lower port of the first inlet line breaking switch 51 is powered on, so that the fault guiding safety effect is achieved. In this case, the bus-coupled disconnecting switch 9 can be first switched off, and then the first incoming line disconnecting switch 51 can be switched on because the lower port of the first incoming line disconnecting switch 51 is not electrified.

Example 9

The fault guiding safety device 4 is applied to a single-phase electric circuit and comprises an on-off part 1, wherein the two sides of the on-off part 1 are an input side 2 and an output side 3 respectively, and the on-off part 1 is in an off state when electrified; the on-off unit 1 is in an on state when not charged.

The on-off part 1 comprises an on-off unit 11, and the on-off unit 11 is a relay and a contactor in a normally closed mode;

the input side includes L, N two terminals of single phase; the output side comprises a first outlet terminal and a second outlet terminal.

The input side 2 is not charged, the first outlet terminal 31 and the second outlet terminal 32 are in a conducting connection state, and the fault guiding safety device 4 is in a conducting state.

The L, N terminals on the input side 2 are charged, the first outlet terminal 31 and the second outlet terminal 32 are in an open state, and the fail-safe device 4 is in an open state. L, N, the on-off unit 11 is turned off, and the first and

second outlet terminals

31 and 32 are turned off, and the fail-safe device 4 is turned off.

Use example 1: the on-off unit 11 is a relay in a normally closed state, and has L, N two four terminals on the input side 2, and a first outlet terminal 31 and a second outlet terminal 32 on the output side 3. The L, N two terminals of the input side 2 are not electrified, and the first outgoing terminal 31 and the second outgoing terminal 32 are in a conducting connection state; the L, N terminals on the input side 2 are charged, and the first outlet terminal 31 and the second outlet terminal 32 are in an open state.

Example 10

The disconnecting switch in embodiments 1 to 9 is an element having a switching function, such as a contactor, a relay, a circuit breaker, a composite switch, or the like.

Example 11

The relays in embodiments 1 to 10 may be replaced with other elements having on-off functions, such as contactors.

Example 12

The closing control circuit in embodiments 1-11 can be replaced by other control circuits with control switches, contactors, and relays, and other products for controlling the closing of the switches can be adopted, such as: an electric operating mechanism.

Example 13

The fail-safe device 4 may also be used in other system power systems, such as high voltage power distribution systems or other power consumption conditions.

The utility model provides a fault direction safety device, electric safety system, multichannel power consumption safety system and be equipped with automatic switching interlocking control system, improve traditional be equipped with automatic switching interlocking mechanism fully, increased fault direction safety device, if A, B, C three-phase arbitrary two have the electricity in the circuit under the breaking switch, then interlocking control system is in the state of breaking absolutely, and control combined floodgate signal just can not switch on, even traditional interlocking mechanism breaks down, also can ensure the power consumption safety.

The utility model provides a spare power automatic switching interlocking control equipment improves traditional spare power automatic switching interlocking mechanism, has increased fault direction safety device 4, if A, B, C three-phase arbitrary two have an electricity under the breaking switch among the oral circuit, then fault direction safety device 4 is in disconnected state, and control combined floodgate signal just can not switch on. Through the utility model provides a spare power automatic switching interlocking control equipment can realize when spare power automatic switching equipment automatic switching, detects the inlet wire switch lower reaches circular telegram condition on the incoming line to when the tradition spare power automatic switching interlocking mechanism breaks down, take place the situation of short circuit or explosion after the switching, both protected property and personal safety, bring very big economic benefits again.

The above embodiments are only examples of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The fault guiding safety device is characterized by comprising an on-off part, wherein the two sides of the on-off part are an input side and an output side respectively;

the input side of the on-off part is electrified, and the output side of the on-off part is in an off state;

the input side of the on-off part is not electrified, and the output side of the on-off part is in a conducting state.

2. The fail-safe apparatus of claim 1, wherein the on-off portion comprises one or three on-off units connected in series, the on-off units being relays or contactors in a normally closed manner;

further, the input side includes L, N two terminals for single phase or A, B, C, N four terminals for three phase; the output side comprises a first wire outlet terminal and a second wire outlet terminal.

3. Electrical safety system with a fail-safe device according to claim 1 or 2, comprising an incoming line circuit on which a disconnector is arranged, characterized by a fail-safe device arranged at the lower mouth of the disconnector.

4. The electrical safety system according to claim 3, wherein the input side of the fault-oriented safety device is arranged at the lower port of the disconnecting switch, and the output side of the fault-oriented safety device is connected in series with a closing control line;

further, the closing control circuit comprises a closing switch, a closing control coil and a closing power supply, and the closing control coil is used for controlling the breaking switch to close.

5. An electric safety system with the fault-oriented safety device of claim 1 or 2, which comprises a bus provided with a bus-coupled breaking switch, and is characterized by further comprising the fault-oriented safety device, wherein the fault-oriented safety device is respectively arranged on two sides of the bus-coupled breaking switch;

6. The multi-path electricity utilization safety system with the fault-oriented safety device of claim 1 or 2, which comprises a power supply, wherein the power supply comprises a first commercial power supply and a second commercial power supply, and a first incoming line disconnecting switch and a second incoming line disconnecting switch are respectively arranged on incoming lines of the first commercial power supply and the second commercial power supply, and the multi-path electricity utilization safety system is characterized by further comprising the fault-oriented safety device, and the fault-oriented safety device is arranged at the lower ports of the first incoming line disconnecting switch and the second incoming line disconnecting switch;

7. The multi-path electricity utilization safety system with the fault-oriented safety device of claim 1 or 2, which comprises a power supply, wherein the power supply comprises a first commercial power supply, a second commercial power supply and a diesel generator, and the incoming lines of the first commercial power supply, the second commercial power supply and the diesel generator are respectively provided with a first incoming line breaking switch, a second incoming line breaking switch and a diesel generation incoming line breaking switch;

8. The multi-path electricity utilization safety system with the fault-oriented safety device of any one of claims 1 or 2, wherein a power supply comprises a first commercial power supply and a second commercial power supply, a first incoming line breaking switch and a second incoming line breaking switch are respectively arranged on incoming lines of the first commercial power supply and the second commercial power supply, the first commercial power supply and the second commercial power supply are connected through a bus, the bus is provided with a bus-coupled breaking switch, the multi-path electricity utilization safety system further comprises the fault-oriented safety device, the fault-oriented safety device is respectively arranged at the lower ports of the first incoming line breaking switch and the second incoming line breaking switch, and the fault-oriented safety device is respectively arranged at two sides of the bus-coupled breaking switch;

furthermore, the input sides of the two fault guiding safety devices are respectively arranged at the lower ports of the first inlet line disconnecting switch and the second inlet line disconnecting switch, and the output sides of the fault guiding safety devices are connected in series on the corresponding closing control lines of the first inlet line disconnecting switch and the second inlet line disconnecting switch;

9. The multi-path electricity utilization safety system with the fault-oriented safety device of claim 1 or 2, which comprises a power supply, wherein the power supply comprises a first commercial power supply, a second commercial power supply and a diesel generator, and the incoming lines of the first commercial power supply, the second commercial power supply and the diesel generator are respectively provided with a first incoming line breaking switch, a second incoming line breaking switch and a diesel generation incoming line breaking switch;

furthermore, the input sides of the three fault-oriented safety devices are respectively arranged at the lower ports of the first inlet wire disconnecting switch, the second inlet wire disconnecting switch and the diesel power generation inlet wire disconnecting switch, and the output sides of the fault-oriented safety devices are connected in series on the corresponding switch-on control lines of the first inlet wire disconnecting switch, the second inlet wire disconnecting switch and the diesel power generation inlet wire disconnecting switch;

10. Spare power automatic switching interlocking control system with the fail-safe device of claim 1 or 2, for a low voltage distribution network, comprising a power supply comprising a first mains supply, a second mains supply, a first incoming line breaking switch and a second incoming line breaking switch are respectively arranged on the incoming lines of the first commercial power supply and the second commercial power supply, the first commercial power supply and the second commercial power supply are connected through a bus, the bus is provided with a bus-bar breaking switch, the first inlet wire breaking switch, the second inlet wire breaking switch and the bus-bar breaking switch are provided with electric interlocking devices corresponding to the switch-on control circuit, the breaker is characterized by further comprising fault guiding safety devices, the fault guiding safety devices are arranged at the lower ports of the first inlet line breaking switch and the second inlet line breaking switch, and the fault guiding safety devices are arranged on two sides of the bus-bar breaking switch respectively;