CN211455608U - High-voltage vacuum switch connected by hinge - Google Patents
High-voltage vacuum switch connected by hinge Download PDFInfo
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- CN211455608U CN211455608U CN201922075604.3U CN201922075604U CN211455608U CN 211455608 U CN211455608 U CN 211455608U CN 201922075604 U CN201922075604 U CN 201922075604U CN 211455608 U CN211455608 U CN 211455608U
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Abstract
The utility model discloses a hinged high-voltage vacuum switch, including flame proof box, intelligent high-voltage electric network comprehensive protector, the flame proof box includes box, qianmen, isolation sword chamber, inlet wire chamber and wiring chamber, be equipped with the hinge mechanism between box and the qianmen, box and qianmen hinged joint, the qianmen is provided with the buckle, the box is provided with the buckle cap, the buckle is buckled with the buckle cap and is connected; the intelligent comprehensive protector is installed on the inner side of the front door, and the front door is provided with a liquid crystal display screen for displaying the operation state and various fault states of the protective box, and is also provided with an operating button and a parameter setting button for realizing the functions of overload, short circuit, reset, emergency stop, power on, power off and power on. The beneficial effects of the utility model reside in that: the intelligent comprehensive protector is arranged to analyze and process data of a circuit where the high-voltage vacuum switch is located, so that faults can be found in time and the circuit can be disconnected in time, and the circuit safety is greatly guaranteed.
Description
Technical Field
The utility model relates to a coal mine equipment technical field especially relates to a hinged joint's high-pressure vacuum switch.
Background
The traditional mining 10KV (6KV) high-voltage vacuum switch has the disadvantages of low switch breaking performance, more faults, large maintenance amount and short service life; when the isolating knife is switched on, the breaker can be switched on, and the isolating knife can be opened after the breaker is switched off, so that the breaker can be switched on due to the fact that the isolating knife is prone to being switched on incompletely due to human reasons in the using process of the isolating knife, and accidents are easily caused by burning of a moving contact and a fixed contact of the isolating knife due to the fact that the moving contact and the fixed contact of the isolating knife are large in contact resistance and high in temperature when the isolating knife is operated for; when the load switch cuts off the power supply under normal conditions; an insulating partition plate is additionally arranged on the load switch to ensure that the gap between the electric appliances enhances the insulating strength; the emergency shutdown of the low-voltage load switch is required to be provided with the upper-level high-explosion switch, the load switch cannot be directly operated with a load, the power distribution flanges are not uniformly used, and the selection switch of a matched manufacturer is used, so that the operation is troublesome; the isolation knife and the voltage transformer (transformer) are often burnt in use; the occupation and maintenance of the underground roadway and the use cost of equipment are increased, the operation is inconvenient, and many unsafe factors of complexity exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hinged joint's high-pressure vacuum switch solves the problem that high-pressure vacuum switch performance is low, the trouble is many, the maintenance volume is big, life is short.
The technical scheme of the utility model is that: a hinged high-voltage vacuum switch comprises a flame-proof box body and an intelligent high-voltage power grid comprehensive protector, wherein the flame-proof box body comprises a box body, a front door, an isolation knife cavity, a wire inlet cavity and a wiring cavity, a hinge mechanism is arranged between the box body and the front door, the box body is hinged with the front door, the front door is provided with a retaining ring, the box body is provided with a retaining cap, and the retaining ring is connected with the retaining cap in a buckled manner; the hinge mechanism comprises a door plate clamping groove plate, a hinge seat, a hinge shaft, a pin, a hinge tee joint and a door moving shaft handle, the explosion-proof box body is a cuboid, the left side and the right side of the wiring cavity are respectively provided with two cable leading-in devices, a high-voltage isolating switch switching-on and switching-off interlocking device is arranged on the right side plate of the box body, an intelligent comprehensive protector is arranged on the inner side of the front door, the front door is provided with a liquid crystal display screen for displaying the operation state and various fault states of the protective box, and is also provided with an operating button and a parameter setting button for realizing the functions of overload, short circuit, reset, emergency stop, power on, power off and hand off, the intelligent comprehensive protector is connected with the liquid crystal display screen and the voltage transformer circuit, a high-voltage cable is connected from a cable lead-in device on one side, passes through the high-voltage vacuum switch and the permanent magnetic mechanism high-voltage vacuum circuit breaker and reaches a cable lead-in device on the other side to be led out;
after a power supply is introduced into the high-voltage wiring cavity, the separation and combination of the isolation plug pins are realized through the permanent magnetic mechanism, the electrification and the loss of the electricity of the upper static contact of the voltage transformer and the permanent magnetic mechanism high-voltage vacuum circuit breaker are controlled, and after the switch is closed, the voltage output by the secondary side of the high-voltage transformer connected with the high-voltage vacuum switch is set as a system control voltage and used as a working power supply of a high-voltage intelligent protector, the permanent magnetic mechanism high-voltage vacuum circuit breaker and a.
When the power supply is in voltage loss, the voltage loss coil of the permanent magnet mechanism high-voltage vacuum circuit breaker is released, and the permanent magnet mechanism high-voltage vacuum circuit breaker is switched off or can not be switched on; when the isolation bolt of the permanent magnet mechanism high-voltage vacuum circuit breaker is closed, the intelligent comprehensive protector firstly carries out self-inspection on the whole system, the intelligent comprehensive protector is protected to be put into operation after the system self-inspection is normal, the intelligent comprehensive protector outputs control and protection signals to an execution unit to control the tripping action of the permanent magnet mechanism high-voltage vacuum circuit breaker according to the logic relation set by various programs and feeds back various fault signals of overload, short circuit, open phase, overvoltage, current, temperature, opening and closing of the system and low-voltage side, so that the permanent magnet mechanism high-voltage vacuum circuit breaker is separated, overload protection, short circuit protection, overvoltage protection, undervoltage protection, open phase protection, overtemperature protection and upper-level power supply emergency stop protection are realized, meanwhile, the fault state is displayed on a liquid crystal display screen, and the system fault is monitored in real time.
In the structure, the right side plate of the box body is provided with the energy storage shaft, the energy storage handle, the energy storage label, the connection separation shaft, the separation handle, the pressing plate, the split label, the locking bolt support, the electromechanical locking device and the locking bolt.
In the structure, an elbow, a line pressing cavity assembly, a warning board, a grounding label and a wire connector cover plate are arranged on the left side plate of the box body.
In the structure, the high-voltage isolating switch is provided with a switch-on position and a switch-off position, when the high-voltage isolating switch is in normal operation and is changed to the switch-on position, the interlocking button is firstly pressed, the handle is rotated anticlockwise to enable the high-voltage isolating plug pin to be reliably contacted with the static contact, then the switch-on button is pressed, the intelligent comprehensive protector outputs a switch signal, the switch-on coil is electrified, the movable iron core of the permanent magnet mechanism moves downwards, the transmission connecting lever closes the switch contact, the auxiliary contact is closed at the same time, the opening spring is stretched, the contact spring is compressed to store energy, and the permanent magnet mechanism keeps the switch-on position; when the high-voltage isolating switch is in normal operation, the high-voltage isolating switch is switched to a disconnection position, the right lower side interlocking button can be pressed, the power distribution device is required to be immediately switched off, and the high-voltage vacuum circuit breaker of the permanent magnet mechanism can be quickly switched off by pressing the power distribution button or the hand distribution handle; under the fault interface, the intelligent comprehensive protector carries out locking protection, ensures that the switching-on operation is not executed any more, and can carry out switching-off and switching-on operations only by pressing a reset key and displaying normal work through a liquid crystal display screen after fault processing.
In the structure, the normal operation state of the high-voltage isolating switch is determined as that the voltage display signal is processed by the intelligent comprehensive protector, and then the voltage display signal displays 10KV and the current display signal displays 0A.
In the structure, the high-voltage isolating switch opening and closing interlocking device comprises an interlocking screw, a front door and an opening and closing door, the interlocking screw is connected with the opening and closing door, and the high-voltage isolating switch opening and closing device is arranged as follows: when the high-voltage isolating switch is switched on, the front door of the high-voltage isolating switch cannot be opened due to the fact that the interlocking screw is screwed in, when the front door needs to be opened, the handle of the high-voltage isolating switch is required to be opened at the switch-off position, the interlocking screw is screwed into the door interlocking hole, and the front door can be opened.
In the structure, the overload protection is that the intelligent integrated protector carries out delayed power-off according to corresponding time when reaching a protection value according to a signal sent by the current transformer after processing and comparing with a set protection value, and simultaneously, the liquid crystal display screen displays an overload fault; the short-circuit protection is that the intelligent comprehensive protector compares a set short-circuit current protection value after processing and calculation according to a signal sent by a current transformer, when the short-circuit current protection value is larger than the short-circuit current value, the high-voltage vacuum circuit breaker of the permanent magnet mechanism is immediately powered off, and meanwhile, a liquid crystal display screen displays a short-circuit fault; the overvoltage protection and the undervoltage protection are realized by comparing the voltage output by the transformer AC110V by the intelligent comprehensive protector after signal processing with a set voltage, when the sampled voltage is lower than 75% of the rated voltage or higher than 115% of the rated voltage and after a set time delay, the intelligent comprehensive protector outputs a signal to control the permanent magnet mechanism high-voltage vacuum circuit breaker to be switched off, and simultaneously, a liquid crystal display screen displays an 'overvoltage fault' or an 'undervoltage fault'; the phase failure protection is that the intelligent comprehensive protector compares the maximum value and the minimum value of current after processing and calculation according to signals sent by the current transformer, and the phase failure protection is powered off through set time delay protection, and meanwhile, a liquid crystal display screen displays a phase failure fault; the overtemperature protection is a temperature detection element in the transformer, the temperature of the transformer is displayed in real time, when the temperature of the transformer exceeds a set protection value, the intelligent comprehensive protector outputs a signal to control the permanent magnet mechanism high-voltage vacuum circuit breaker to be disconnected, and meanwhile, the liquid crystal display screen displays 'shift overtemperature'; the superior power supply emergency stop protection is that when the power supply needs superior emergency power failure, the superior power supply can be quickly stopped (when the superior power supply is connected with the superior power supply control device), and the emergency stop button of the power distribution device is pressed.
In the structure, the intelligent comprehensive protector comprises a DSP chip for acquiring signals and processing interruption, a permanent magnetic mechanism high-voltage vacuum circuit breaker for interrupting electric leakage and short-circuit protection and an RS485 chip with a communication function, wherein the DSP chip is in circuit connection with the permanent magnetic mechanism high-voltage vacuum circuit breaker and the RS485 chip, and the voltage and current insulation state in a main circuit is protected by adopting an advanced PLC for real-time monitoring and display; the control button is directly received on the DI point that adopts advanced PLC, realizes text picture's switching and parameter setting through PLC's DI point, and the product can more freely set up the button trompil position on the explosion-proof switch casing door, and it is more convenient to expand than other products can not freely set up button trompil position.
The beneficial effects of the utility model reside in that: through setting up intelligent comprehensive protection ware to the data analysis processing of high-pressure vacuum switch place circuit, can in time discover the trouble and can in time break off circuit, greatly ensured circuit safety, specifically have following several:
1. the explosion suppression achieves the GB requirement, the volume is small, the appearance structure is more reasonable, the operation is visual and convenient, an advanced and perfect microcomputer integrated system is provided, the reliability of the integral power supply is improved, the protection parameters are integrally convenient, and the automatic detection device has the functions of simulating fault test self-detection and time and date display; the energy-saving switch has an electric switch-on and a manual energy-storing switch-on double mechanism.
2. The high-voltage vacuum circuit breaker adopting the permanent magnet mechanism has low failure rate, is basically free of maintenance, is convenient to operate, and has suitable performance for both the spring mechanism type circuit breaker and the permanent magnet mechanism type circuit breaker to be applicable and interchangeable.
3. The vacuum circuit breaker can be directly operated with load and controlled remotely, does not produce arc light when being opened and closed, has high breaking capacity and long service life, the service life reaches more than 10000 times, and the breaking capacity can meet the requirements of large and medium mines.
4. The novel insulation partition is adopted for the switch base of the isolation knife, the insulation thickness is increased, the insulation strength is better, and the problem that the gap pressure resistance strength of the electric appliance can be guaranteed only by additionally installing an insulation partition plate is solved.
5. The isolating knife is often burnt in the use of a coal mine, and an isolating knife travel switch is added, so that the isolating knife can not be closed, the circuit breaker can not be closed and the brake can not be applied, and when the isolating knife is pulled open and is not broken, the circuit breaker is already opened, thereby ensuring the safety of the isolating knife.
6. In the coal mine, a voltage transformer (transformer) is often burnt, the whole machine is burnt in the serious condition, the maintenance cost is increased, the good image of an enterprise is influenced, a high-voltage fuse is added, and the voltage transformer is protected to protect a switch.
7. A special protection function module shift change control terminal digital signal processing center intelligent comprehensive protector is integrated in module software application, the function block can realize constant-speed disconnection protection of electric leakage and short circuit, the protection is realized in an interruption mode, and compared with other products, the intelligent comprehensive protector is simpler and more convenient to program and has faster response to protection.
8. The intelligent comprehensive protector adopts an advanced PLC module to directly collect alternating voltage and current signals output by the current transformer and the transformer, other products PLC can only receive standard direct current signals, a sampling plate and the like for converting the alternating current signals into the standard direct current signals are omitted, the signal sampling speed is improved, a possible fault point is reduced, the cost is saved, and the installation space is reduced.
9. The intelligent comprehensive protector adopts an advanced DSP chip for collecting signals and processing interruption, the electric leakage and short-circuit protection adopt hardware interruption, no program scanning is needed for logic judgment, and compared with other products, the intelligent comprehensive protector saves a transmitter, greatly shortens the time of short-circuit protection and electric leakage protection, and improves the safety of underground personnel and equipment of a coal mine.
10. The control button is directly received on the DI point that adopts advanced PLC, realizes text picture's switching and parameter setting through PLC's DI point, and the product can more freely set up the button trompil position on the explosion-proof switch casing door, and it is more convenient to expand than other products can not freely set up button trompil position.
11. The device comprises a static contact, a piezoresistor, an isolating knife crank arm, an isolating knife bent plate, a zero sequence reactor and a high-voltage fuse protector; safe, reliable and practical current, voltage transformer, relay and the like
12. The intelligent comprehensive protector directly has a sensor to provide original data, and has the advantages of high accuracy, strong response failure, outstanding anti-interference capability and enhanced equipment protection reliability.
13. The intelligent comprehensive protector and the color display terminal liquid crystal display screen with advanced technology are adopted, the parameter setting is flexible and simple, the quality is stable, the action performance is sensitive and reliable, and the operation and fault pictures are visual and concise.
14. The intelligent comprehensive protector has the functions of system self-checking, fault diagnosis, routing inspection and memory, and RS485 communication, and can transmit the running fault state in real time to be combined with an automatic network of a mine to form a more complete automatic mine monitoring system.
15. And (4) executing the regulation of coal mine safety regulations, setting overload, short circuit, phase failure, overvoltage, undervoltage, overtemperature and upper-level power supply emergency stop protection, and protecting the fault fed back from the low-voltage side.
16. The temperature protection function is provided for the transformer.
17. The high-voltage side power supply protection device is matched with a transformer and a low-voltage comprehensive protection box to form an international advanced protection mode of a low-voltage side fault sectional transformer high-voltage side power supply.
18. The shell is provided with a high-pressure isolation knife cavity, and the operation and maintenance are safe and reliable.
19. Advanced hinge structures are used.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a front view of a high voltage vacuum switch;
FIG. 2 is a cross-sectional view of a high voltage vacuum switch;
fig. 3 is a side view of a high voltage vacuum switch.
In the figure: the device comprises a hinge mechanism 1, a name plate 2, a parameter setting button 3, a liquid crystal display 4, a function operating button 5, an isolation handle 6, an energy storage handle 7, a static contact 8, an energy storage label 9, an energy storage label 10, a split label 11, a snap ring 12, a snap cap 13, a permanent magnetic mechanism high-voltage vacuum circuit breaker 14, a front door and a box body 15.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to the attached drawings, the utility model discloses a hinged high-pressure vacuum switch, including flame proof box, intelligent high-voltage electric network comprehensive protector, high-pressure isolator, the flame proof box includes box 15, qianmen 14, isolation sword chamber, inlet wire chamber and wiring chamber, be equipped with hinge mechanism 1 between box 15 and qianmen 14, box 15 and qianmen 14 hinged joint, qianmen 14 is provided with buckle 11, box 15 is provided with detains cap 12, buckle 11 is detained with detaining cap 12 and is connected, the hinge mechanism includes door board slotted plate, hinge seat, hinge pin, round pin, hinge tee, moves a door axle handle, install the dust guard on qianmen 14; the explosion-proof box body is a cuboid, two cable leading-in devices are respectively arranged on the left side and the right side of the wiring cavity, a high-voltage isolating switch opening and closing interlocking device is arranged on a right side plate of the box body 15, an intelligent comprehensive protector is arranged on the inner side of a front door, a liquid crystal display screen 4 used for displaying the operation state and various fault states of the protection box is arranged on the front door, and an operation button 5 and a parameter setting button 3 are arranged for realizing the functions of overload, short circuit, reset, emergency stop, power on, power off and hand off, the intelligent comprehensive protector is connected with the liquid crystal display screen 4 and a voltage transformer circuit, the high-voltage cable is connected from the cable leading-in device on one side and is led out from the cable leading-in device on the other side;
after a power supply is introduced into the high-voltage wiring cavity, the separation and combination of an isolation bolt are realized through a permanent magnetic mechanism, and the upper static contact 8 of a voltage transformer and a permanent magnetic mechanism high-voltage vacuum circuit breaker 13 is controlled to be electrified and de-electrified;
when the power supply is in voltage loss, the voltage loss coil of the permanent magnet mechanism high-voltage vacuum circuit breaker 13 is released, and the circuit breaker is opened or can not be closed; when the isolation bolt of the permanent magnetic mechanism high-voltage vacuum circuit breaker is closed, the intelligent comprehensive protector firstly carries out self-inspection on the whole system, the intelligent comprehensive protector is protected to be put into operation after the system self-inspection is normal, the intelligent comprehensive protector outputs control and protection signals to an execution unit to control the tripping action of the permanent magnetic mechanism high-voltage vacuum circuit breaker 13 according to the logic relation set by various programs and controls the permanent magnetic mechanism high-voltage vacuum circuit breaker 13 to be switched off, so that the permanent magnetic mechanism high-voltage vacuum circuit breaker 13 is switched off, overload protection, short-circuit protection, overvoltage protection, undervoltage protection, phase failure protection, overtemperature protection and upper-level power supply emergency stop protection are realized, meanwhile, the fault state is displayed on the liquid crystal display 4, and the system fault is monitored in real time.
Preferably, an energy storage shaft, an energy storage handle 7, an energy storage label 9, a connection separation shaft, an isolation handle 6, a pressing plate, a split label 10, a locking bolt support, an electromechanical locking device and a locking bolt are arranged on a right side plate of the box body 15, and a nameplate 2 is arranged in front of the box body 15.
Preferably, an elbow, a wire pressing cavity assembly, a warning board, a grounding label and a wire connector cover plate are arranged on the left side plate of the box body 15.
Preferably, the high-voltage isolating switch is provided with a switch-on position and a switch-off position, when the high-voltage isolating switch is in normal operation, the high-voltage isolating switch is changed to the switch-on position, the interlocking button is firstly pressed, the handle is rotated anticlockwise to enable the high-voltage isolating plug pin to be reliably contacted with the static contact, then the switch-on button is pressed, the intelligent comprehensive protector outputs a switch signal, the switch-on coil is electrified, the moving iron core of the permanent magnet mechanism moves downwards, the transmission connecting lever closes the switch contact, the auxiliary contact is closed at the same time, the opening spring is stretched, the contact spring is compressed to store energy, and the permanent magnet mechanism keeps the switch-on position; when the high-voltage isolating switch is in normal operation, the high-voltage isolating switch is switched to a disconnection position, the right lower side interlocking button can be pressed, the power distribution device is required to be immediately switched off, and the permanent magnet mechanism high-voltage vacuum circuit breaker 13 can be quickly switched off by pressing the power distribution button or the hand distribution handle; under the fault interface, the intelligent comprehensive protector carries out locking protection, ensures that the switching-on operation is not executed any more, and can carry out the switching-off and switching-on operations only by pressing a reset key liquid crystal display 4 to display normal work after the fault is processed.
And the normal operation state of the high-voltage isolating switch is confirmed as that the voltage display signal is processed by the intelligent comprehensive protector, the voltage displays 10KV or 6KV, and the current displays 0A.
Preferably, the high-voltage isolating switch opening and closing interlocking device comprises an interlocking screw, a front door and an opening and closing switch, the interlocking screw is connected with the opening and closing switch, and the high-voltage isolating switch opening and closing device is set as follows: when the high-voltage isolating switch is switched on, the front door of the high-voltage isolating switch cannot be opened due to the fact that the interlocking screw is screwed in, when the front door needs to be opened, the handle of the high-voltage isolating switch is required to be opened at a switching-off position (at the moment, the vacuum circuit breaker is in a switching-off state), the interlocking screw is screwed in the door interlocking hole, and the front door can be opened.
Preferably, the overload protection is that the intelligent integrated protector carries out delayed power-off according to corresponding time when reaching a protection value according to a signal sent by a current transformer after processing and comparing with a set protection value, and simultaneously, a liquid crystal display screen displays an overload fault; the short-circuit protection is that the intelligent comprehensive protector compares a set short-circuit current protection value after processing and calculation according to a signal sent by a current transformer, when the short-circuit current protection value is larger than the short-circuit current value, the high-voltage vacuum circuit breaker 13 of the permanent magnet mechanism is immediately powered off, and meanwhile, the liquid crystal display screen 4 displays a short-circuit fault; the overvoltage protection and the undervoltage protection are realized by comparing the voltage output by the transformer AC110V by the intelligent comprehensive protector after signal processing with a set voltage, when the sampled voltage is lower than 75% of the rated voltage or higher than 115% of the rated voltage and after a set time delay, the intelligent comprehensive protector outputs a signal to control the permanent magnetic mechanism high-voltage vacuum circuit breaker 13 to be switched off, and simultaneously, the liquid crystal display screen 4 displays an 'overvoltage fault' or an 'undervoltage fault'; the phase failure protection is that the intelligent comprehensive protector compares the maximum value and the minimum value of current after processing and calculation according to signals sent by the current transformer, and the current is protected to be powered off through set time delay, and meanwhile, the liquid crystal display screen 4 displays the phase failure fault; the overtemperature protection is a temperature detection element in the transformer, the temperature of the transformer is displayed in real time, when the temperature of the transformer exceeds a set protection value, the intelligent comprehensive protector outputs a signal to control the permanent magnet mechanism high-voltage vacuum circuit breaker 13 to be switched off, and meanwhile, the liquid crystal display screen 4 displays 'shift overtemperature'; the superior power supply emergency stop protection is that when the power supply needs superior emergency power failure, the superior power supply can be quickly stopped (when the superior power supply is connected with the superior power supply control device), and the emergency stop button of the power distribution device is pressed.
Preferably, the intelligent comprehensive protector comprises a DSP chip for acquiring signals and processing interruption, a permanent magnetic mechanism high-voltage vacuum circuit breaker 13 for interrupting electric leakage and short-circuit protection, and an RS485 chip with a communication function, wherein the DSP chip is in circuit connection with the permanent magnetic mechanism high-voltage vacuum circuit breaker 13 and the RS485 chip, and the voltage and current insulation state in a main circuit is protected by adopting an advanced PLC for real-time monitoring and display; the control button is directly received on the DI point that adopts advanced PLC, realizes text picture's switching and parameter setting through PLC's DI point, and the product can more freely set up the button trompil position on the explosion-proof switch casing door, and it is more convenient to expand than other products can not freely set up button trompil position.
The vacuum structure design is made at the place where the vacuum explosion suppression is needed: the rough surface processing illumination of the explosion-proof joint surfaces of the explosion-proof flanges and the parts reaches a value of 6.3 or 3.2, the size gaps of the explosion-proof joint surfaces are smaller than 0.35mm, an explosion-proof vacuum cavity is formed, and the explosion-proof performance of the explosion-proof joint surfaces meets the national standard GB 8286-2010.
In one implementation, the high-voltage isolating switch opening and closing interlocking device is provided with a bolt, and the interlocking screw is connected with the bolt of the box door.
The above description is only a preferred embodiment of the present patent, and not intended to limit the scope of the present patent, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the specification and the drawings, and which are directly or indirectly applied to other related technical fields, belong to the scope of the present patent protection.
Claims (6)
1. A high-voltage vacuum switch connected by a hinge is characterized in that: the explosion-proof box comprises a box body, a front door, an isolation knife cavity, a wire inlet cavity and a wiring cavity, wherein a hinge mechanism is arranged between the box body and the front door, the box body is connected with the front door through a hinge, the front door is provided with a retaining ring, the box body is provided with a retaining cap, and the retaining ring is connected with the retaining cap in a buckling manner; the hinge mechanism comprises a door plate clamping groove plate, a hinge seat, a hinge shaft, a pin, a hinge tee joint and a door moving shaft handle, the explosion-proof box body is a cuboid, the left side and the right side of the wiring cavity are respectively provided with two cable leading-in devices, a high-voltage isolating switch switching-on and switching-off interlocking device is arranged on the right side plate of the box body, an intelligent comprehensive protector is arranged on the inner side of the front door, the front door is provided with a liquid crystal display screen for displaying the operation state and various fault states of the protective box, and is also provided with an operating button and a parameter setting button for realizing the functions of overload, short circuit, reset, emergency stop, power on, power off and hand off, the intelligent comprehensive protector is connected with the liquid crystal display screen and the voltage transformer circuit, a high-voltage cable is connected from a cable lead-in device on one side, passes through the high-voltage vacuum switch and the permanent magnetic mechanism high-voltage vacuum circuit breaker and reaches a cable lead-in device on the other side to be led out;
after a power supply is introduced into the high-voltage wiring cavity, the separation and combination of the isolation plug pins are realized through the permanent magnetic mechanism, the electrification and the loss of the electricity of the upper static contact of the voltage transformer and the permanent magnetic mechanism high-voltage vacuum circuit breaker are controlled, and after the switch is closed, the voltage output by the secondary side of the high-voltage transformer connected with the high-voltage vacuum switch is set as a system control voltage and used as a working power supply of a high-voltage intelligent protector, the permanent magnetic mechanism high-voltage vacuum circuit breaker and a.
2. A hinged high pressure vacuum switch, as claimed in claim 1, wherein: and an energy storage shaft, an energy storage handle, an energy storage label, a connecting separation shaft, an isolation handle, a pressing plate, a split label, a locking bolt support, an electromechanical locking device and a locking bolt are arranged on the right side plate of the box body.
3. A hinged high pressure vacuum switch, as claimed in claim 1, wherein: and an elbow, a wire pressing cavity assembly, a warning board, a grounding label and a wire connector cover plate are arranged on the left side plate of the box body.
4. A hinged high pressure vacuum switch, as claimed in claim 1, wherein: the high-voltage isolating switch is provided with a switch-on position and a switch-off position.
5. A hinged high pressure vacuum switch, as claimed in claim 1, wherein: the intelligent comprehensive protector comprises a DSP chip for acquiring signals and processing interruption, a permanent magnet mechanism high-voltage vacuum circuit breaker for interrupting electric leakage and short-circuit protection, and an RS485 chip with a communication function, wherein the DSP chip is in circuit connection with the permanent magnet mechanism high-voltage vacuum circuit breaker and the RS485 chip.
6. A hinged high pressure vacuum switch, as claimed in claim 1, wherein: the high-voltage isolating switch opening and closing interlocking device comprises an interlocking screw rod, a front door and an opening and closing switch, wherein the interlocking screw rod is connected with the opening and closing switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922075604.3U CN211455608U (en) | 2019-11-27 | 2019-11-27 | High-voltage vacuum switch connected by hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922075604.3U CN211455608U (en) | 2019-11-27 | 2019-11-27 | High-voltage vacuum switch connected by hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211455608U true CN211455608U (en) | 2020-09-08 |
Family
ID=72318041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922075604.3U Active CN211455608U (en) | 2019-11-27 | 2019-11-27 | High-voltage vacuum switch connected by hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211455608U (en) |
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2019
- 2019-11-27 CN CN201922075604.3U patent/CN211455608U/en active Active
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