CN210535604U

CN210535604U - Earth leakage circuit breaker

Info

Publication number: CN210535604U
Application number: CN201922190025.3U
Authority: CN
Inventors: 吴行健; 谢昕
Original assignee: Haige Technology Co ltd
Current assignee: Haige Technology Co ltd
Priority date: 2019-12-07
Filing date: 2019-12-07
Publication date: 2020-05-15
Anticipated expiration: 2029-12-07

Abstract

The utility model relates to a leakage circuit breaker, its tripper includes the skeleton, the main coil, the leakage coil, overflow the iron core, the leakage iron core, the main push rod, the leakage push rod, the skeleton forms the main coil former in the front side, the rear side forms the leakage coil former, the main coil is around outside the main coil former, the main coil is established ties on the major loop, the leakage coil is around outside the leakage coil former, the leakage coil is connected with zero sequence transformer, overflow the iron core setting inside the main coil frame, it is provided with the main spring to overflow between the front end of iron core and skeleton, the main push rod sets up in the overcurrent iron core the place ahead, the leakage iron core sets up inside the leakage coil former, the leakage push rod sets up in leakage iron core the place ahead, the front end and the main push rod of leakage push rod are connected. The utility model discloses overcurrent protection and earth leakage protection adopt a release to realize, simple structure, the dependable performance.

Description

Earth leakage circuit breaker

Technical Field

The utility model relates to a residual current circuit breaker.

Background

The residual current circuit breaker is a circuit breaker with a leakage protection function, an overcurrent release and a leakage release are arranged inside the residual current circuit breaker, short circuit and leakage protection are achieved respectively, the existing overcurrent release and the existing leakage release are separately arranged and are respectively linked with an operating mechanism, the size of the residual current circuit breaker cannot be reduced, a plurality of components are arranged, and the production cost is high.

Disclosure of Invention

To the above-mentioned not enough, the utility model provides an adopt electric leakage circuit breaker of integral type release.

In order to achieve the above object, the utility model discloses a leakage breaker, including the casing and the tripper of setting in the casing, operating device, zero sequence mutual inductor, the tripper front end sets up towards operating device, the tripper includes the skeleton, main coil, the earth leakage coil, the overcurrent core, the leakage core, main push rod, the leakage push rod, the skeleton forms the main coil former in the front side, the rear side forms the leakage coil former, the main coil winds outside the main coil former, the main coil is established ties on the main circuit, the leakage coil winds outside the leakage coil former, the leakage coil is connected with zero sequence mutual inductor, the overcurrent core sets up inside the main coil former, be provided with the main spring between the front end of overcurrent core and skeleton, the main push rod sets up in the front of overcurrent core, the leakage core sets up inside the leakage coil former, the leakage push rod sets up in the front of leakage core, the front end of leakage push, and a leakage spring is arranged between the leakage push rod and the overcurrent iron core.

The utility model discloses further set up to overflow the rear end center of iron core and form the earth leakage spring groove, earth leakage spring one end sets up at the earth leakage spring inslot.

The utility model discloses further set up to the diameter of main coil former is greater than the electric leakage coil former, and the inside front end of main coil former is fixed and is provided with the push rod frame, and the main push rod is worn in the push rod frame, and the main spring setting is at the push rod frame and overflows between the iron core.

The utility model discloses further set up as push rod frame's rear end forms main spring groove, and the main spring front end sets up at main spring inslot.

The utility model discloses further set up to the rear end of main push rod forms the connecting hole, forms the round draw-in groove in the connecting hole, the front end of electric leakage push rod forms the connecting rod, and in the connecting rod inserted the connecting hole of main push rod, the snap ring of the draw-in groove adaptation with the connecting hole was formed on the connecting rod, and the connecting rod passes through the snap ring and is connected in the connecting hole with the cooperation of draw-in groove.

The beneficial effects of the utility model are that overcurrent tripping and electric leakage tripping adopt a release to realize, simple structure, the dependable performance. The tripping device adopts two groups of coils and iron cores to realize overcurrent protection and leakage protection, the current of a main coil is increased during overcurrent protection, so that the overcurrent iron core moves forwards, the main push rod is pushed to move forwards by overcoming the elasticity of a main spring, and an operating mechanism is impacted to realize tripping; during leakage protection, the leakage coil generates current, the leakage iron core moves forwards, the main push rod is pushed through the overcurrent push rod to realize leakage protection tripping, the overcurrent iron core can not be pushed, the main push rod does not need to be overcome, the main push rod can be pushed only by overcoming the leakage spring, resistance is small, and small leakage current can push the main push rod to act to realize tripping.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a trip unit according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the embodiment of the present invention is a leakage circuit breaker, including a housing 4 and a release 1, an operating mechanism 2 and a zero sequence transformer 3 arranged in the housing 4, wherein the front end of the release 1 is arranged toward the operating mechanism 2, the release 1 includes a frame 11, a main coil 12, a leakage coil 13, an overcurrent core 14, a leakage core 15, a main push rod 16 and a leakage push rod 17, the frame 11 forms a main coil frame 111 at the front side and a leakage coil frame 112 at the rear side, the diameter of the main coil frame 111 is greater than that of the leakage coil frame 13, the main coil 12 is wound outside the main coil frame 111, the main coil 12 is connected in series on the main circuit, the leakage coil 13 is wound outside the leakage coil frame 112, the leakage coil 13 is connected with the zero sequence transformer 3, the overcurrent core 14 is arranged inside the main coil frame 111, the front end of the overcurrent core 14 is provided with a main spring 18, the main, the front end inside the main coil frame 111 is fixedly provided with a push rod frame 10, a main push rod 16 penetrates in the push rod frame 10, a main spring 18 is arranged between the push rod frame 10 and an overcurrent iron core 14, the rear end of the push rod frame 10 forms a main spring groove 101, the front end of the main spring 18 is arranged in the main spring groove 101, an electric leakage iron core 15 is arranged inside an electric leakage coil frame 112, an electric leakage push rod 17 is arranged in front of the electric leakage iron core 15, the front end of the electric leakage push rod 17 is connected with the main push rod 16, the rear end of the main push rod 16 forms a connecting hole 161, a circle of clamping grooves 162 are formed in the connecting hole 161, the front end of the electric leakage push rod 17 forms a connecting rod 171, the connecting rod 171 is inserted into the connecting hole 161 of the main push rod 16, a clamping ring 172 matched with the clamping grooves 162 of the connecting hole 161 is formed on the connecting rod 171, the, a leakage spring groove 141 is formed in the center of the rear end of the overcurrent core 14, and one end of the leakage spring 19 is disposed in the leakage spring groove 141.

The above-mentioned specific embodiment is the preferred embodiment of the present invention, and except the above-mentioned embodiments, other changes of the present invention are also within the protection scope of the present invention.

Claims

1. The utility model provides a residual current circuit breaker, includes the casing and sets up tripper, operating device, zero sequence transformer in the casing, and the tripper front end sets up its characterized in that towards operating device: the tripper comprises a framework, a main coil, a leakage coil, an overcurrent iron core, a leakage iron core, a main push rod and a leakage push rod, wherein the framework forms a main coil frame at the front side, the rear side forms a leakage coil frame, the main coil is wound outside the main coil frame, the main coil is connected in series on a main loop, the leakage coil is wound outside the leakage coil frame, the leakage coil is connected with a zero sequence transformer, the overcurrent iron core is arranged inside the main coil frame, a main spring is arranged between the overcurrent iron core and the front end of the framework, the main push rod is arranged in front of the overcurrent iron core, the leakage iron core is arranged inside the leakage coil frame, the leakage push rod is arranged in front of the leakage iron core, the front end of the leakage push rod is connected with the main.

2. A residual current circuit breaker as claimed in claim 1, characterized in that: and a leakage spring groove is formed in the center of the rear end of the overcurrent iron core, and one end of the leakage spring is arranged in the leakage spring groove.

3. A residual current circuit breaker as claimed in claim 1 or 2, characterized in that: the diameter of the main coil rack is larger than that of the leakage coil rack, a push rod rack is fixedly arranged at the front end inside the main coil rack, the main push rod penetrates through the push rod rack, and the main spring is arranged between the push rod rack and the overcurrent iron core.

4. A residual current circuit breaker as claimed in claim 3, characterized in that: the rear end of the push rod frame forms a main spring groove, and the front end of the main spring is arranged in the main spring groove.

5. A residual current circuit breaker as claimed in claim 1 or 2, characterized in that: the rear end of main push rod forms the connecting hole, forms the round draw-in groove in the connecting hole, the front end of electric leakage push rod forms the connecting rod, and in the connecting rod inserted the connecting hole of main push rod, form on the connecting rod with the snap ring of the draw-in groove adaptation of connecting hole, the connecting rod passes through the snap ring and connects in the connecting hole with the cooperation of draw-in groove.