CN203326597U

CN203326597U - Disconnector built-in type overvoltage protection device

Info

Publication number: CN203326597U
Application number: CN2013204486005U
Authority: CN
Inventors: 李国治
Original assignee: HENAN YIDA TECHNOLOGY OF ELECTRICITY Co Ltd
Current assignee: HENAN YIDA TECHNOLOGY OF ELECTRICITY Co Ltd
Priority date: 2013-07-26
Filing date: 2013-07-26
Publication date: 2013-12-04
Anticipated expiration: 2023-07-26

Abstract

The utility model relates to the field of electrical technology, and provides a disconnector built-in type overvoltage protection device which comprises a lightning arrester and a disconnector arranged below the lightning arrester. The external part of the lightning arrester is an insulating layer. The disconnector built-in type overvoltage protection device is characterized in that: the insulating layer extends downwardly so that the external side surface of the disconnector is wrapped. The interior of the lightning arrester is provided with resistance sheets, of which the exterior is sleeved with an insulating tube. An electrode or a lead-out terminal is arranged below the disconnector. A coil of an online monitoring device is also sleeved on the external side of the electrode or the lead-out terminal. The internal part of the disconnector is provided with a temperature-sensitive spring and a pin shaft. The temperature-sensitive spring is sleeved on the pin shaft, and a pin is arranged on the pin shaft. The pin is made of tin or tin alloy. A bottom disc is arranged below the pin shaft of the disconnector. A stretching ring edge is arranged below the external edge of the bottom disc. The cross section of the stretching ring edge is a triangle structure. The disconnector built-in type overvoltage protection device has advantages of being obvious is indication, simple in structure, convenient to install and relatively small in size, and the application is not affected in damp and high-altitude places.

Description

The built-in overvoltage protection device of disconnector

Technical field

The utility model relates to technical field of electricity, particularly relates to a kind of overvoltage protection device.

Technical background

Overvoltage protection device with disconnector has top lightning arrester and disconnector, the lightning arrester outside is insulating barrier, in prior art, disconnector is arranged on following (or outside) of lightning arrester, it is split-type structural, the electric current that the disconnector of this spline structure can only lean on overvoltage to produce flicks disconnector, when if lightning arrester damages because of the internal wetted heating, basic just de-the be unableing to do without of this disconnector, the maintainer just can't find this lightning arrester and has damaged like this, have be unfavorable for the maintainer correct judge the whether normal shortcoming of operation of lightning arrester, in addition it also to have parts many, complex process, size is larger, be arranged on the shortcoming that the power distribution cabinet spatial location is restricted.

Summary of the invention

The purpose of this utility model is exactly for above-mentioned shortcoming, provide a kind of both can be excessive in overvoltage, break away from indication to the maintainer while causing lightning arrester inner pressure sensitive resistance to damage; Again can be under the built-in function overvoltage; cause the lightning arrester inner heat and pin is melted; make temperature sensing spring eject lightning arrester and give the maintainer and can break away from obvious indication, with the integrated design of insulation ground plate, the built-in overvoltage protection device of disconnector that simple in structure, easy for installation, size is less.

The technical solution of the utility model is achieved in that the built-in overvoltage protection device of disconnector, comprises lightning arrester and following disconnector, and the lightning arrester outside is insulating barrier, it is characterized in that: described insulating barrier is wrapped in the disconnector lateral surface to downward-extension.

Further say, described lightning arrester the inside is resistor disc, and what the resistor disc outside was socketed is insulated tube.

Further, described lightning arrester outside adopts large umbellule structural design, has increased the creepage distance of lightning arrester, has strengthened the dirty ability of resistant of lightning arrester, has met the high altitude localities use.

Further say electrode or exit are arranged below described disconnector, also have the coil of on-line monitoring instrument to be socketed in electrode or the exit outside.

Further say, described disconnector inside is provided with temperature sensing spring and bearing pin, and temperature sensing spring is socketed on bearing pin, is provided with pin above bearing pin, and pin is that tin or ashbury metal are made.

Further saying, is chassis below described disconnector bearing pin, the circle of stretching out rib is arranged below the outer, chassis, and the cross section of stretching out the circle rib is leg-of-mutton structure.

The beneficial effects of the utility model are: the built-in overvoltage protection device of such disconnector has indication obviously, does not affect use in high altitude localities, simple in structure, easy for installation, size is less, the advantages such as easy access personnel maintenance.

The accompanying drawing explanation

The structural representation that Fig. 1 is section of the present utility model.

Fig. 2 is the enlarged drawing of A part in Fig. 1.

Wherein: 1, the coil 8 of lightning arrester 2, disconnector 3, insulating barrier 4, resistor disc 5, insulated tube 6, electrode or exit 7, on-line monitoring instrument, temperature sensing spring 9, bearing pin 10, pin 11, chassis 12, leg-of-mutton structure.

Specific embodiments:

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the built-in overvoltage protection device of disconnector, comprise lightning arrester 1 and following disconnector 2, and lightning arrester 1 outside is insulating barrier 3, it is characterized in that: described insulating barrier extension is wrapped in disconnector 2 lateral surfaces.

Further say, described lightning arrester the inside is resistor disc 4, and what the resistor disc outside was socketed is insulated tube 5.

Further say electrode or exit 6 arranged below described disconnector, also have the coil 7 of on-line monitoring instrument to be socketed in electrode or the exit outside.

Further say, described disconnector inside is provided with temperature sensing spring 8 and bearing pin 9, and temperature sensing spring is socketed on bearing pin, is provided with pin 10 above bearing pin, and pin is that tin or ashbury metal are made.

Further saying, is the circle of stretching out rib to be arranged below outer, 11， chassis, chassis below described disconnector bearing pin, and the cross section of stretching out the circle rib is leg-of-mutton structure 12.

Product disconnector and the lightning arrester of prior art separate, the insulating barrier and the disconnector that are in other words lightning arrester are independent, existing product only has when lightning arrester holds can't stand overvoltage and when damaging, the over-current shock that disconnector could lean on this transient overvoltage to produce and separate lightning guard, only have the maintainer to find that this disconnector and lightning arrester have broken away from, just prove that this lightning arrester broken, when if lightning arrester damages because of the internal wetted adstante febre, basic just de-the be unableing to do without of this disconnector, the maintainer just can't find this lightning arrester and has damaged like this.

Product of the present utility model is also this function, but exactly disconnector has been built into to lightning arrester inside, insulation board and the lightning arrester formula that becomes one has been designed, have is exactly that it is than more superior on original properties of product again, the electric current that on product originally, disconnector can only lean on overvoltage to produce flicks disconnector, now after change structure, be exactly built-in disconnector after, spring that can be inner this during the too large or lightning arrester internal wetted of overvoltage is washed open.

Also have while expanding because be heated when lightning arrester body, reach the fusing point of this pin once temperature, pin melts, and spring can break away from electrode and eject simultaneously, and it has dual-use function thus, the one, by the impact of electric current, the 2nd, by hot melt, in Here it is integrated design, alleviated manufacture craft, and whole height also forces down to some extent, more be conducive to install

In prior art, disconnector and insulation board are designs separately, need to be fixed by bolts on lightning arrester, install and transport all more bothersome.

The utility model is in order to allow spring break away from, and is designed to the structure of section triangle below the outer, chassis, because outside is the silicon rubber vulcanizated, is designed to wedge angle and can makes electrode along with silicon rubber is promptly washed in the impact of spring open.

Claims

1. the built-in overvoltage protection device of disconnector, comprise lightning arrester and following disconnector, and the lightning arrester outside is insulating barrier, it is characterized in that: described insulating barrier is wrapped in the disconnector lateral surface to downward-extension.

2. overvoltage protection device according to claim 1 is characterized in that: described lightning arrester the inside is resistor disc, the socket of resistor disc outside be insulated tube.

3. overvoltage protection device according to claim 1, is characterized in that: electrode or exit are arranged below described disconnector, also have the coil of on-line monitoring instrument to be socketed in electrode or the exit outside.

4. overvoltage protection device according to claim 1, it is characterized in that: described disconnector inside is provided with temperature sensing spring and bearing pin, and temperature sensing spring is socketed on bearing pin, is provided with pin above bearing pin, and pin is that tin or ashbury metal are made.

5. overvoltage protection device according to claim 1 is characterized in that: be chassis below described disconnector bearing pin, the circle of stretching out rib arranged below the outer, chassis, the cross section of stretching out the circle rib is leg-of-mutton structure.