CN215266150U

CN215266150U - Trip type breakdown safety

Info

Publication number: CN215266150U
Application number: CN202121329689.4U
Authority: CN
Inventors: 陈露
Original assignee: Hefei Langte Electric Power Technology Co ltd
Current assignee: Hefei Langte Electric Power Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-12-21
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a tripping type breakdown safety device, which comprises an outer casing, wherein the upper end of the outer casing is fixedly connected with a wiring screw, the lower end of the wiring screw is fixedly connected with a conducting wire, the lower end of the conducting wire is fixedly connected with a tripper device, the lower end of the tripper device is provided with a conducting rod, and the lower end of the outer casing is fixedly connected with an outer insulating layer; the tripper device comprises an upper thermal tripper, the upper end of the upper thermal tripper is fixedly connected with the lower end of the conducting wire, and the lower end of the upper thermal tripper is fixedly connected with 2-4 connectors. A trip formula puncture insurance, be equipped with the release device, can puncture automatic disconnection when becoming invalid through last hot release with the setting of hot release down, provide short circuit and overload protection's effect to can carry out remote alarm when last hot release opens circuit with hot release down, bring better use prospect.

Description

Trip type breakdown safety

Technical Field

The utility model belongs to the technical field of voltage protection, in particular to trip formula punctures insurance.

Background

The breakdown fuse is one kind of lightning arrester, is a kind of protective gap applied in low-voltage power network, when using, it is directly connected in parallel with protected equipment, and can be used for limiting overvoltage on protected equipment, and is a kind of protective equipment for preventing high voltage from running into low voltage in neutral point ungrounded system, and is made up by using two copper electrode clamps and perforated mica sheet, its breakdown voltage is several hundreds of volts, and generally it is a phase of neutral point of low-voltage power network star connection method or angle connection method, and utilizes the breakdown fuse to make reliable connection with ground, and normally, the mica sheet in the fuse is broken down, so that the low-voltage power network and ground are kept insulated, and its system movement mode is not changed, when the high voltage runs into low voltage, the hole gap of mica sheet in the fuse is broken down, and the fault current can make high-voltage system protective device quickly act, and cut off power supply, if the fault current is not large, if the protection device is not enough to operate, the grounding resistance is small, so that the voltage to ground in a fault can be reduced, and the risk of high voltage entering low voltage is reduced.

However, the existing breakdown fuse cannot protect the electrical element any more after being broken down, needs to be replaced in time, is easy to cause untimely protection in the time when the breakdown replacement is untimely, causes the occurrence of the damage event of the electrical element, and has higher potential safety hazard.

Disclosure of Invention

The breakdown fuse aims at the problem that the electric appliance element can not be protected after the breakdown fuse is broken down and needs to be replaced in time, otherwise, the electric appliance element is easy to be damaged due to improper protection in the time that the breakdown fuse is not replaced in time.

The utility model provides a tripping type breakdown safety device, which comprises an outer casing, wherein the upper end of the outer casing is fixedly connected with a wiring screw, the lower end of the wiring screw is fixedly connected with a conducting wire, the lower end of the conducting wire is fixedly connected with a tripper device, the lower end of the tripper device is provided with a conducting rod, and the lower end of the outer casing is fixedly connected with an outer insulating layer; the tripper device comprises an upper thermal tripper, the upper end of the upper thermal tripper is fixedly connected with the lower end of a conducting wire, the lower end of the upper thermal tripper is fixedly connected with 2-4 connectors, one end of each connector is fixedly connected with a lower thermal tripper, and the lower end of the lower thermal tripper is provided with a remote signaling terminal.

Preferably, the outer casing is of a hollow structure, one end of the wiring screw is arranged on the outer wall surface of the outer casing, the other end of the wiring screw is arranged on the inner wall surface of the outer casing, and the wiring screw can introduce external current into the inner part.

Preferably, the outer wall of the conductive rod is fixedly connected with a spacer, and the lower end surface of the spacer is arranged on the inner bottom wall of the outer casing.

Preferably, the lower end of the conducting rod is fixedly connected with a conducting wire, and the conducting wire can conduct current continuously after the current is introduced.

Preferably, one end of the conductive wire is fixedly connected with a piezoresistor, and the outer wall of the piezoresistor is fixedly provided with a heat dissipation filler, so that a certain heat dissipation effect can be achieved.

Preferably, the piezoresistor, the heat dissipation filler and the conductive wire are all arranged in the middle of the outer insulating layer.

Preferably, the outer wall of the outer casing is provided with a heat insulation layer, so that the heat insulation protection effect can be achieved.

Compared with the prior art, the utility model provides a trip formula punctures insurance possesses following beneficial effect:

this tripping type puncture insurance, at first fix the lower extreme at the lead wire with last thermal release, 2 connectors and lower thermal release fixed connection that last thermal release set up through the lower extreme after that, can break down automatically when overheated puncture became invalid through the setting of last thermal release and lower thermal release, provide short circuit and overload protection's effect, then the lower extreme fixed mounting of thermal release has the telecommand terminal down, can carry out remote alarm when last thermal release breaks circuit with lower thermal release, realized the real-time supervision to PT multiple spot ground connection, the secondary side is gone into to the high voltage of primary side cluster has effectively been prevented, the person and equipment safety have been protected.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic structural view of a trip type breakdown fuse according to the present invention;

fig. 2 shows a schematic structural diagram of a trip device according to the present invention.

In the figure: 1. an outer casing; 2. a conductive rod; 3. a release device; 4. conducting wires; 5. a binding screw; 6. a separator; 7. an outer insulating layer; 8. a voltage dependent resistor; 9. a heat-dissipating filler; 10. a conductive wire; 11. a thermal insulation layer; 301. an upper thermal release; 302. a lower thermal trip; 303. a connector; 304. a remote signaling terminal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a trip type breakdown safety device includes an outer casing 1, specifically, the middle of the outer casing 1 is a hollow structure, a connection screw 5 is fixedly connected to the upper end of the outer casing 1, one end of the connection screw 5 is disposed on the outer wall surface of the outer casing 1, the other end is disposed on the inner wall surface of the outer casing 1, the connection screw 5 can introduce an external current into the interior, the lower end of the connection screw 5 is fixedly connected with a connection wire 4, the connection wire 4 can introduce the current and then conduct the current, one end of the connection wire 4 is fixedly connected with a trip device 3, the trip device 3 can play a role of short circuit and overload protection, when the current passes through the trip device 3, an internal thermal element generates heat, the thermal element is heated and deformed to a cut-off circuit, the lower end of the trip device 3 is fixedly connected with a conductive rod 2, the outer wall of the conductive rod 2 is provided with a spacer 6, the spacing block 6 can play a certain insulation protection role, the lower end of the outer casing 1 is fixedly connected with an outer insulation layer 7, and the outer insulation layer 7 can further play an insulation protection role.

Further, the tripper device 3 includes an upper thermal tripper 301, a lower thermal tripper 302, a connector 303 and a remote signaling terminal 304, the upper end of the upper thermal tripper 301 is fixedly connected with a lead wire 4, the lead wire 4 is used for leading current into the upper thermal tripper 301, the upper thermal tripper 301 can provide an overload protection function, the lower end face of the upper thermal tripper 301 is fixedly connected with 2-4 connectors 303, exemplarily, the embodiment is provided with 2 connectors 303, one end of the connector 303 is fixedly connected with the lower thermal tripper 302, the connector 303 can transmit the power of the upper thermal tripper 301 into the lower thermal tripper 302, the flow rate of the current passing through is increased, the lower end of the lower thermal tripper 302 is fixedly connected with the remote signaling terminal 304, a remote alarm can be given when the upper thermal tripper 301 and the lower thermal tripper 302 are in an open circuit, and real-time monitoring of PT multipoint grounding is realized.

Further, the one end of conducting rod 2 is provided with conductor wire 10, can transmit the voltage in the conducting rod 2, the one end of conductor wire 10 is provided with piezo-resistor 8, piezo-resistor 8 can suppress the unusual overvoltage that often appears in the circuit, piezo-resistor 8's outer wall fixed mounting has heat dissipation filler 9, can play certain radiating effect, wherein, piezo-resistor 8, heat dissipation filler 9 and conductor wire 10 all arrange the middle part of outer insulating layer 7 in, the outer wall of outer jacket 1 is provided with insulating layer 11, can play thermal-insulated protection's effect.

Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A trip-type breakdown fuse, comprising: the device comprises an outer casing, wherein the upper end of the outer casing is fixedly connected with a wiring screw, the lower end of the wiring screw is fixedly connected with a conducting wire, the lower end of the conducting wire is fixedly connected with a release device, the lower end of the release device is provided with a conducting rod, and the lower end of the outer casing is fixedly connected with an outer insulating layer;

the tripper device comprises an upper thermal tripper, the upper end of the upper thermal tripper is fixedly connected with the lower end of a conducting wire, the lower end of the upper thermal tripper is fixedly connected with 2-4 connectors, one end of each connector is fixedly connected with a lower thermal tripper, and the lower end of the lower thermal tripper is provided with a remote signaling terminal.

2. A trip-type break-through fuse according to claim 1, wherein: the outer casing is of a hollow structure, one end of the wiring screw is arranged on the outer wall surface of the outer casing, and the other end of the wiring screw is arranged on the inner wall surface of the outer casing.

3. A trip-type shoot-through fuse as claimed in claim 1 or 2, wherein: the outer wall of the conducting rod is fixedly connected with a spacer, and the lower end face of the spacer is arranged on the inner bottom wall of the outer sleeve shell.

4. A trip-type break-through fuse according to claim 3, wherein: the lower end of the conducting rod is fixedly connected with a conducting wire.

5. A trip-type break-through fuse according to claim 4, wherein: one end of the conductor wire is fixedly connected with a piezoresistor, and the outer wall of the piezoresistor is fixedly provided with a heat dissipation filler.

6. A trip-type break-through fuse according to claim 5, wherein: the piezoresistor, the heat dissipation filler and the conductive wire are all arranged in the middle of the outer insulating layer.

7. A trip-type break-through fuse according to claim 6, wherein: and the outer wall of the outer sleeve shell is provided with a heat insulation layer.