Surge protection device with backup switch voltage limiting protection

Abstract

The utility model discloses a surge protection device with backup switch voltage limiting protection, which is characterized in that a static contact of a backup switch in a left backup protection area is electrically connected with a wire inlet end of the surge protection device, and a moving contact of the backup switch is electrically connected with a one-way gap; two terminals of the one-way gap, the gas discharge tube and the electromagnetic coil of the left side backup protection area are connected in parallel and are electrically connected with a connection point B of the left side backup protection area; the right side surge discharge area temperature control switch and the T2 voltage limiting type piezoresistor are electrically connected in parallel and are electrically connected with the B connection point of the right side surge discharge area, and the right side surge discharge area temperature control switch and the T2 piezoresistor are electrically connected in parallel and are electrically connected with the decoupling inductor of the right side surge discharge area. The backup switch, the T1 switch type graphite multi-stage discharge gap assembly, the temperature control switch and the T2 piezoresistor are in protective electric connection with the remote signaling switch, and the remote signaling switch outputs prompt signals in a remote signaling mode. The use safety protection performance is improved, and the protected circuit or product is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to a surge protector, in particular to a surge protector with backup switch voltage limiting protection. Background Art

[0002] A surge protector (SPD), also known as a lightning arrester (AP), is an electronic device that provides safety protection for various electronic devices, instruments, and communication lines. When a sudden spike in current or voltage occurs in an electrical circuit or communication line due to external interference, the SPD can conduct and shunt the current in a very short time, thereby preventing the surge from damaging other equipment in the circuit. SPDs are typically suitable for use in AC 50 / 60HZ, 220V / 380V rated voltage power supply systems to protect against indirect and direct lightning effects or other transient overvoltage surges. They are widely used in residential, tertiary, and industrial applications requiring surge protection. Existing SPDs lack a backup switch voltage-limiting protection function, which can easily lead to damage to the protected lines or products due to lack of protection during the safety protection process.

[0003] Patent No. ZL202220940751.1, with an announcement date of October 21, 2022, discloses a surge protector for lightning protection engineering, comprising a slide rail body, the surface of which is longitudinally slidably connected to the surge protector body, the interior of which is laterally slidably connected to a moving rod via a limit groove and a limit rod, the top and bottom of the moving rod are both provided with a movable groove, and the interior of the movable groove is movably connected to a connecting rod via a pin. The utility model solves the problem that the stability of the existing surge protector needs to be improved by providing a slide rail body, a surge protector body, a moving rod, a movable groove, a connecting rod, a plug rod, a round block, a support plate, a spring, a clamping groove, a fixing plate, an outlet and a push rod. When the surge protector is in use, it is generally slidably limited on the surface of the slide rail for fixed use. The slide rail can only limit the surge protector and cannot effectively ensure that the surge protector is stably placed on the surface of the slide rail, thereby reducing the stability of the surge protector. This solution also has the problem of not having a backup switch voltage limiting protection function, which may cause damage to the protected lines or products due to lack of protection during the safety protection process. Utility Model Content

[0004] In order to solve the problem that existing surge protectors do not have a backup switch voltage limiting protection function, which easily leads to damage to the protected lines or products due to lack of protection during the safety protection process, the utility model provides a surge protector with backup switch voltage limiting protection for electronic equipment, instruments and meters, and communication lines, thereby greatly improving the safety protection of use and more effectively avoiding damage to the protected lines or products.

[0005] The specific technical solution adopted by the utility model to solve the above technical problems is: a surge protector with backup switch voltage limiting protection, characterized in that: it includes a left backup protection zone and a right surge discharge zone, the right surge discharge zone is equipped with a fault remote signaling output switch, the B connection point of the left backup protection zone is electrically connected to the B connection point of the right surge discharge zone; the KG-1 end static contact of the backup switch of the left backup protection zone is electrically connected to the incoming line end of the surge protector, the KG-2 end moving contact of the backup switch of the left backup protection zone is electrically connected to the JX-1 end of the unidirectional gap, the JX-1 terminal of the unidirectional gap of the left backup protection zone, the FDG-1 terminal of the gas discharge tube and the DCX-1 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the A connection point of the left backup protection zone; the JX-2 terminal of the unidirectional gap of the left backup protection zone, the FDG-2 terminal of the gas discharge tube and the DCX-2 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the B connection point of the left backup protection zone; The WK-1 terminal of the temperature control switch in the discharge zone and the MOV-1 terminal of the T2 voltage-limiting varistor are electrically connected in parallel and electrically connected to the B connection point of the right surge discharge zone. The WK-2 terminal of the temperature control switch in the right surge discharge zone and the MOV-2 ​​terminal of the T2 varistor are electrically connected in parallel and electrically connected to the TX-1 terminal of the decoupling inductor in the right surge discharge zone. The TX-2 terminal of the decoupling inductor is electrically connected to the C connection point of the right surge discharge zone. The S terminal of the T1 switch-type graphite multi-stage discharge gap component is electrically connected to the TX-2 terminal of the decoupling inductor. The M-1 terminal is electrically connected to the B connection point of the right surge relief zone. The SM-2 terminal of the T1 switch-type graphite multi-stage discharge gap assembly is electrically connected to the C connection point of the right surge relief zone. The C connection point of the right surge relief zone is electrically connected to the ground terminal of the left backup protector zone. The backup switch in the left backup protection zone, as well as the T1 switch-type graphite multi-stage discharge gap assembly, temperature-controlled switch, and T2 varistor in the right surge relief zone are protectively connected to the remote signaling switch, which outputs a remote signaling prompt signal. This combined protection and remote signaling prompt of the left backup protection zone, right surge relief zone, and fault remote signaling output switch provides backup switch voltage-limiting protection for electronic equipment, instruments, and communication lines, greatly improving operational safety and preventing damage to the protected lines or products.

[0006] Preferably, the WK-2 terminal of the temperature-controlled switch in the right surge relief zone and the MOV-2 ​​terminal of the T2 voltage-limiting varistor are electrically connected in parallel and electrically connected to the TX-1 terminal of the decoupling inductor in the right surge relief zone. Simultaneously, the TX-1 terminal of the decoupling inductor in the right surge relief zone is electrically connected to the D connection point in the right surge relief zone. This improves the effectiveness of temperature control protection, voltage limiting protection, and decoupling protection, as well as the effectiveness of the remote signaling output indication response.

[0007] Preferably, the C connection point of the right surge relief zone is electrically connected to the C connection point of the left backup protection zone, thereby improving the combined protection effectiveness of the right surge relief zone and the left backup protection zone.

[0008] Preferably, the electromagnetic coil DCX, the gas discharge tube FDG and the one-way gap JX together form a step-by-step increasing current backup protector, thereby improving the safety, reliability and effectiveness of the corresponding protection gradient when the lightning surge gradually increases.

[0009] The beneficial effects of this utility model are: through the combined protection and remote signaling of the left backup protection zone, the right surge relief zone, and the fault remote signaling output switch, it can provide backup switch voltage limiting protection for electronic equipment, instruments, and communication lines, greatly improving operational safety and effectively preventing damage to the protected lines or products. It also provides a corresponding step-by-step protection gradient for the situation where lightning surges gradually increase, ensuring safety, reliability, and effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0011] Figure 1 The utility model is a schematic diagram of the electrical principle structure of a surge protector with backup switch voltage limiting protection.

[0012] Figure 2 The utility model is a schematic structural diagram of the left backup protection zone of the surge protector with backup switch voltage limiting protection.

[0013] Figure 3 It is a structural schematic diagram of the right side surge discharge area of ​​the surge protector with backup switch voltage limiting protection of the utility model.

[0014] Figure 4 The utility model is a schematic structural diagram of a surge protector with backup switch voltage limiting protection. DETAILED DESCRIPTION

[0015] Figure 1 、 Figure 2 、 Figure 3 、 Figure 4In the illustrated embodiment, a surge protector with backup switch voltage limiting protection includes a left backup protection zone 10 and a right surge discharge zone 20. The right surge discharge zone is equipped with a fault remote signaling output switch, the fault remote signaling output switch YX. The B connection point B of the left backup protection zone 10 is electrically connected to the B connection point B of the right surge discharge zone. The static contact KG-1 of the backup switch KG in the left backup protection zone is electrically connected to the incoming line terminal of the surge protector, and the moving contact KG-2 of the backup switch KG in the left backup protection zone is electrically connected to the one-way gap JX. -1 terminal is electrically connected, the JX-1 terminal of the unidirectional gap JX in the left reserve protection zone, the FDG-1 terminal of the gas discharge tube FDG, and the DCX-1 terminal of the electromagnetic coil DCX are electrically connected in parallel and electrically connected to the A connection point of the left reserve protection zone; the JX-2 terminal of the unidirectional gap JX in the left reserve protection zone, the FDG-2 terminal of the gas discharge tube, and the DCX-2 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the B connection point of the left reserve protection zone; the WK-1 terminal of the temperature control switch WK in the right surge discharge zone is electrically connected to the WK-2 terminal of the temperature control switch WK in the right surge discharge zone. The MOV-1 terminal of the T2 voltage-limiting varistor MOV is electrically connected in parallel and electrically connected to the B connection point of the right surge discharge area. The WK-2 terminal of the temperature control switch in the right surge discharge area and the MOV-2 ​​terminal of the T2 voltage-limiting varistor are electrically connected in parallel and electrically connected to the TX-1 terminal of the decoupling inductor TX in the right surge discharge area. The TX-2 terminal of the decoupling inductor TX is electrically connected to the C connection point of the right surge discharge area. The SM-1 terminal of the T1 switch-type graphite multi-stage discharge gap component SM is electrically connected to the right surge discharge area. The B connection point of the left backup protection zone is electrically connected to the SM-2 terminal of the T1 switch-type graphite multi-stage discharge gap assembly and the C connection point of the right surge discharge zone. The C connection point of the right surge discharge zone is electrically connected to the ground terminal of the left backup protector zone. The backup switch KG of the left backup protection zone, as well as the T1 switch-type graphite multi-stage discharge gap assembly SM, temperature-controlled switch WK and T2 voltage-limiting varistor MOV in the right surge discharge zone are protectively connected to the remote signal switch YX. The remote signal switch outputs a prompt signal remotely through the remote signal output terminal TXS. An arc extinguishing cover 14 and a self-locking mechanism 13 are installed and connected to the left backup protection zone 10.

[0016] The WK-2 terminal of the temperature-controlled switch WK in the right surge discharge area 20 and the MOV-2 ​​terminal of the T2 varistor MOV are electrically connected in parallel and electrically connected to the TX-1 terminal of the decoupling inductor TX in the right surge discharge area. At the same time, the TX-1 terminal of the decoupling inductor TX in the right surge discharge area is electrically connected to the D connection point of the right surge discharge area.

[0017] The C connection point of the right surge relief zone is electrically connected to the C connection point of the left backup protection zone. The three components of the electromagnetic coil DCX, the gas discharge tube FDG and the unidirectional gap JX together form a step-by-step increasing through-current backup protector.

[0018] A fault trip linkage indicator 21, a first linkage spring 22, a second linkage spring 24, a compression spring 23, and a C connection point connected to the soft wire CR and the temperature over-temperature monitoring point 25 are installed and connected on the right surge discharge area 20. The spring end of the first linkage spring 22 is in contact with the temperature over-temperature monitoring point 25. The temperature over-temperature monitoring point 25 is connected to a protrusion at one end corner of the T1 switch type graphite multi-stage discharge gap assembly SM. A B connection point is installed and connected at the protrusion at the other end corner of the T1 switch type graphite multi-stage discharge gap assembly SM.

[0019] When in use, the connection method of T1 switch type + T2 voltage limiting type surge protector is:

[0020] The KG-1 static contact of the backup switch is first introduced through the incoming line end of the left backup protector area, and then the moving contact from the KG-2 end is connected to point A. The two ends of the three components DCX, FDG, and JX are respectively connected to points A and B in parallel, and then point B is connected to point B of the right surge discharge area. The two ends of the two components WK and MOV in the right surge discharge area are connected to points B and D in parallel, the two ends of the TX component are respectively connected to points D and C, the two ends of the SM component are respectively connected to points B and C, and point C is connected to the grounding end of the left backup protector area, so as to realize the protective electrical connection of the backup switch in the left backup protection area, and the T1 switch-type graphite multi-stage discharge gap component, temperature control switch and T2 varistor in the right surge discharge area with the remote signaling switch, and the remote signaling output prompt signal of the signaling switch.

[0021] Working principle of T1 switch type + T2 voltage limiting type surge protector:

[0022] The KG-1 static contact is first introduced through the incoming line end of the left backup protector area, the KG backup switch is closed, and then the moving contact from the KG-2 end is connected to point A. In order to improve the stability of the backup protector, the present invention adopts a step-by-step increasing current design composed of three components, DCX, FDG, and JX. In the state without lightning surge, the Un voltage passes from DCX to point B. When the lightning surge energy reaches a certain level, the FDG is first instantaneously started and turned on to point B. As the lightning surge increases again, the JX component is started and turned on to point B. When the MOV component in the right surge discharge area detects When point B is in a state of high voltage and high current caused by a lightning surge, the MOV component is instantaneously activated to maintain a voltage-limiting linear discharge of the lightning surge to the ground terminal. As the lightning surge gradually increases again, the voltage-limiting type cannot maintain a large flow rate to discharge the lightning surge. The SM component detects that point B is in a state of high voltage and high current caused by a lightning surge, and instantaneously activates the SM component to perform a switching type discharge of a large flow rate of the lightning surge, high voltage and high current to the ground terminal. Therefore, in order to comprehensively improve the protection performance of the surge protector, the present invention designs an integrated surge protector that combines both a switching type and a voltage-limiting type.

[0023] Working principle of fault protection and remote signaling output of T1 switch type + T2 voltage limiting type surge protector:

[0024] Power frequency continuous current overcurrent protection: When the MOV component and SM component in the right surge discharge area have a short circuit due to a fault, resulting in power frequency continuous current overcurrent and affecting the operation of the main line, in order not to affect the normal operation of the main line, the surge protector needs to be disconnected from the main line. The present invention instantly activates the DCX component linkage self-locking mechanism in the left backup protection area, causing the KG component to operate and disconnect the MOV component and SM component in the right surge discharge area to continue to work abnormally and drive the YX (remote signal switch) to operate and issue a remote signal output prompt

[0025] 2. SM component over-temperature protection: When the SM component in the right surge discharge area overheats, the low-temperature solder at the T1 temperature over-temperature detection point melts, disconnecting the linkage spring 1. Due to the action of the compression spring, the indicator is pushed, and the separation of the indicator causes a red display in the right surge discharge area window, which then drives the linkage spring 2, which in turn drives the self-locking mechanism, causing the KG component to operate and drive the YX (remote signal switch) to operate and send a remote signal output prompt signal.

[0026] 3. MOV component overtemperature protection: When the MOV component in the right surge discharge area overheats, the WK component instantly turns on and drives the DCX component to activate the self-locking mechanism, causing the KG component to activate and drive the YX (remote signal switch) to activate and send a remote signal output prompt signal.

[0027] In the description of positional relationships in the present invention, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0028] The above content and structure describe the basic principles, main features, and advantages of the present invention, which should be understood by those skilled in the art. The above examples and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements are intended to be within the scope of the invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A surge protector with backup switch voltage limiting protection, characterized by: It includes a left backup protection zone and a right surge discharge zone. The right surge discharge zone is equipped with a fault remote signaling output switch. The B connection point of the left backup protection zone is electrically connected to the B connection point of the right surge discharge zone; the KG-1 static contact of the backup switch in the left backup protection zone is electrically connected to the incoming line terminal of the surge protector, and the KG-2 moving contact of the backup switch in the left backup protection zone is electrically connected to the JX-1 terminal of the one-way gap. The JX-1 terminal of the one-way gap in the left backup protection zone, the FDG-1 terminal of the gas discharge tube and the DCX-1 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the A connection point of the left backup protection zone; the JX-2 terminal of the one-way gap in the left backup protection zone, the FDG-2 terminal of the gas discharge tube and the DCX-2 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the B connection point of the left backup protection zone; the WK-1 terminal of the temperature control switch in the right surge discharge zone and the T2 voltage-limiting varistor are electrically connected. The MOV-1 terminals are electrically connected in parallel and electrically connected to the B connection point of the right-side surge relief zone. The WK-2 terminal of the temperature-controlled switch and the MOV-2 ​​terminal of the T2 varistor in the right-side surge relief zone are electrically connected in parallel and electrically connected to the TX-1 terminal of the decoupling inductor in the right-side surge relief zone. The TX-2 terminal of the decoupling inductor is electrically connected to the C connection point of the right-side surge relief zone. The SM-1 terminal of the T1 switch-type graphite multi-stage discharge gap assembly is electrically connected to the B connection point of the right-side surge relief zone. The SM-2 terminal of the T1 switch-type graphite multi-stage discharge gap assembly is electrically connected to the C connection point of the right-side surge relief zone. The C connection point of the right-side surge relief zone is electrically connected to the ground terminal of the left-side backup protector zone. The backup switch in the left-side backup protection zone, as well as the T1 switch-type graphite multi-stage discharge gap assembly, the temperature-controlled switch and the T2 varistor in the right-side surge relief zone are protectively electrically connected to the remote signaling switch, and the remote signaling switch outputs a remote remote signaling prompt signal.

2. The surge protector with backup switch voltage limiting protection according to claim 1, characterized in that: The WK-2 terminal of the temperature-controlled switch in the right surge discharge area and the MOV-2 ​​terminal of the T2 varistor are electrically connected in parallel and electrically connected to the TX-1 terminal of the decoupling inductor in the right surge discharge area. At the same time, the TX-1 terminal of the decoupling inductor in the right surge discharge area is electrically connected to the D connection point of the right surge discharge area.

3. The surge protector with backup switch voltage limiting protection according to claim 1, characterized in that: The C connection point of the right surge discharge zone is electrically connected to the C connection point of the left backup protection zone.

4. The surge protector with backup switch voltage limiting protection according to claim 1, characterized in that: The three components of the electromagnetic coil DCX, the gas discharge tube FDG and the unidirectional gap JX together constitute a step-by-step increasing through-current backup protector.

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