CN210722914U

CN210722914U - Electronic leakage circuit breaker

Info

Publication number: CN210722914U
Application number: CN201922202449.7U
Authority: CN
Inventors: 张瑞青; 陈淑浩
Original assignee: Hengsmai Electric Power Technology Zhejiang Co Ltd
Current assignee: Hengsmai Electric Power Technology Zhejiang Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-06-09
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses an electronic leakage circuit breaker, which comprises a shell, wherein the front end and the rear end of the shell are provided with connector lugs, the shell comprises a base and an upper cover, the base is provided with a moving contact, a static contact, a swing rod, a traction rod and a moving contact operating mechanism, the traction rod can drive the moving contact operating mechanism to work by rotating, the base is also provided with a phase A current transformer, a phase B current transformer and a phase C current transformer, the base is provided with a mounting groove corresponding to the position of each phase current transformer and used for mounting each phase current transformer, each mounting groove is arranged side by side and separated by a baffle, each mounting groove is also provided with a guide groove for sliding in an iron core of each phase current transformer when each phase current transformer is mounted, the upper cover is provided with a circuit board, the output end of each phase current transformer is electrically connected with the, the base is also provided with an electromagnetic trip capable of driving the breaker to open.

Description

Electronic leakage circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, in particular to electronic type leakage circuit breaker.

Background

The circuit breaker is including opening closing mechanism, protection mechanism and arc extinguishing mechanism, and its theory of operation is: the protection mechanism (tripper) and the current assembly are utilized to realize overload and short-circuit protection, when the current passing through the coil in the current assembly is larger than a set current value, the protection mechanism is tripped to enable the breaker to be opened or closed, under the normal condition, a common user can only carry out the operation of opening or closing the operating handle, and professional personnel are required to debug when internal parameters are set and the check lamp is inquired, so that the use is troublesome.

Disclosure of Invention

The utility model aims at: in order to overcome the defects of the prior art, the utility model provides an electronic type leakage circuit breaker can show the electric current size that passes through the electronic display screen, can also regulate and control the setting value through control switch to the setting value.

The utility model discloses an electronic type residual current circuit breaker, including the casing, both ends all are provided with the connector lug around the casing, and the casing is equipped with moving contact, static contact, pendulum rod, traction lever and moving contact operating device including base and upper cover on the base, and the pendulum rod swing can drive the circuit breaker and close a floodgate and open a floodgate, and the traction lever rotates and to drive moving contact operating device work, its characterized in that: still be equipped with A phase current transformer on the base, B phase current transformer and C phase current transformer, it is equipped with the mounting groove that is used for installing each phase current transformer to correspond each phase current transformer position on the base, each mounting groove sets up side by side and separates through the baffle, still be equipped with the guide slot that is used for supplying each phase current transformer's iron core when each phase current transformer installs and slides in on each mounting groove, on cover and be equipped with the circuit board, each phase current transformer output is connected with the circuit board electricity, be connected with electronic display screen on the circuit board and be used for setting for the control switch through current rating, still be equipped with the electromagnetism release that can drive the circuit breaker separating brake on the.

Adopt above-mentioned technical scheme, can be at A phase current transformer, it is more convenient and stable when B phase current transformer and C phase current transformer are installed, the baffle can separate each mounting groove and make and prevent each phase current transformer mutual interference when using, can be more stable and accurate when the circuit breaker uses, and each phase current transformer can turn into the undercurrent with the heavy current and show through electronic display screen, electronic display screen can also be convenient for observe the size through the electric current, be convenient for observe the behavior of circuit breaker in real time, can also set for the rated value that the electric current passes through control switch, make and more convenient when revising the rated value, the circuit takes place to transship, electromagnetism release can drive the circuit breaker and carry out the separating brake when undervoltage and short circuit and make the circuit breaker can be safer when using.

The utility model discloses a further setting again: electromagnetic release is including the solenoid valve, the ejector pad, zero sequence current transformer sets up on the base, still be equipped with the mounting panel on the base, be equipped with the mounting bracket on the mounting panel, the solenoid valve is fixed to be set up on the mounting bracket, the ejector pad slide set up on the mounting panel and with the cooperation of solenoid valve output linkage, the solenoid valve output can drive the ejector pad and slide backward, still be equipped with between mounting bracket and the ejector pad and be used for promoting the ejector pad gliding reset spring forward when the solenoid valve output is withdrawed, reset spring one end is contradicted on the mounting bracket, the other end is contradicted on the ejector pad, thereby the ejector pad slides forward and can drive the traction lever and rotate and realize circuit.

Adopt the aforesaid to further set up again, the utility model discloses make this circuit breaker have overload, under-voltage and earth leakage protection function, utilized the principle of magnetism return force when the electric current is too big can produce magnetic field force at the circuit, make the output of solenoid valve withdraw, thereby reset spring promotes the ejector pad and slides forward when the output of solenoid valve withdraws, thereby promotes the traction lever and rotates and realize the circuit breaker separating brake to realize protect function.

The utility model discloses a further setting again: the arc extinguishing chamber is arranged on the base corresponding to the moving contact and the static contact, arc extinguishing grid pieces are arranged on the arc extinguishing chamber, a groove is formed in the middle of each arc extinguishing grid piece, the moving contact and the static contact are arranged in the groove, and the arc extinguishing grid pieces are provided with a plurality of arc extinguishing layers side by side.

By adopting the above further arrangement, when the breaker is used, the moving contact and the static contact can generate electric sparks generally during switching on and switching off, the electric sparks are too large to generate potential safety hazards, the electric sparks of the moving contact and the static contact can be led to the arc extinguishing layer by the arc extinguishing grid pieces, and then the arc extinguishing layer arranged side by side is weakened layer by layer, so that the electric sparks are reduced and dissipated, the breaker is safer when being used, and the service life can be longer.

The utility model discloses a further setting: still be equipped with the insulation board on the explosion chamber, the insulation board setting still is equipped with the slot between connector lug and explosion chamber on the explosion chamber, is equipped with the inserted block on the insulation board, and the inserted block is inserted and is established in the slot.

Adopt above-mentioned further setting, can be so that prevent the electric spark on the arc extinguishing bars piece when using and run to connector lug department for safer when using, the inserted block and slot cooperation can be so that prevent the insulation board relative slip around by oneself when using, make the circuit breaker stability when using better, but also can lead when the insulation board is installed, make more convenient when the installation.

The utility model discloses a further setting: the upper cover is also provided with an opening for the electronic display screen, the control switch and the oscillating bar to leak.

By adopting the further arrangement, the observation of the electronic display screen, the operation of the swing rod and the control switch can be facilitated.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view of the base of the present invention in combination with other parts;

FIG. 3 is an exploded view of the upper cover of the present invention;

FIG. 4 is a schematic view of the base mechanism of the present invention;

fig. 5 is a schematic structural view of the mounting rack of the present invention;

FIG. 6 is a schematic view of the push block of the present invention;

fig. 7 is a schematic structural view of an arc extinguishing grid of the present invention;

fig. 8 is an enlarged view of a portion a of fig. 2.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

the utility model discloses an electronic leakage circuit breaker, which comprises a shell 1, the front and back ends of the shell 1 are provided with connector lugs 2, the shell 1 comprises a base 111 and an upper cover 112, the base 111 is provided with a moving contact 3, a static contact 4, a swing rod 5, a draw rod 6 and a moving contact operating mechanism 7, the swing rod 5 swings to drive the circuit breaker to switch on and switch off, the draw rod 6 rotates to drive the moving contact operating mechanism 7 to work, thereby realizing the disconnection of the moving contact 3 and the static contact 4, the technical characteristics are common in the prior art, therefore, in the embodiment, the technical characteristics are not further explained, in the embodiment, the base 111 is also provided with an A-phase current transformer 8, a B-phase current transformer 9 and a C-phase current transformer 10, the base 111 is provided with a mounting groove 11 for mounting each-phase current transformer corresponding to each-phase current transformer position, each installation groove 11 is arranged side by side and is separated by a partition plate 12, the partition plate is made of insulating materials, each installation groove 11 is also provided with a guide groove 14 for sliding in an iron core 13 of each phase current transformer when each phase current transformer is installed, an upper cover 112 is provided with a circuit board 15, the circuit board 15 can be fixed on the upper cover through screws or bolts or can be fixed on the upper cover in a buckling connection mode, the output end of each phase current transformer is electrically connected with the circuit board 15, the output end of each phase current transformer is one end with less coil turns, the circuit board 15 is connected with an electronic display screen 16 and a control switch 17 for setting a through current rated value, the base 111 is also provided with an electromagnetic release device capable of driving the breaker to open, and the installation of the A phase current transformer 8, the B phase current transformer 9 and the C phase current transformer 10 is more convenient and stable, the baffle 12 can separate each mounting groove 11 and make and prevent each phase current transformer mutual interference when using, can be more stable and accurate when the circuit breaker uses, and each phase current transformer can turn into the undercurrent with the heavy current and show through electronic display screen 16, electronic display screen can also be convenient for observe the size through the electric current, be convenient for observe the behavior of circuit breaker in real time, can also set for the rated value that the electric current passes through control switch 17, it is more convenient when revising the rated value, the circuit takes place to transship, the electromagnetism release can drive the circuit breaker and carry out the separating brake when undervoltage and short circuit and make the circuit breaker can be safer when using.

The electromagnetic release comprises an electromagnetic valve 18, a push block 19 and a zero sequence current transformer 20, wherein the zero sequence current transformer 20 is arranged on a base 111, a mounting plate 21 is further arranged on the base 111, a mounting frame 22 is arranged on the mounting plate 21, the electromagnetic valve 18 is fixedly arranged on the mounting frame 22, the push block 19 is slidably arranged on the mounting plate 21 and is in linkage fit with the output end of the electromagnetic valve 18, the output end of the electromagnetic valve 18 can drive the push block 19 to slide backwards, a reset spring 23 for pushing the push block 19 to slide forwards when the output end of the electromagnetic valve 18 is withdrawn is further arranged between the mounting frame 22 and the push block 19, one end of the reset spring 23 is abutted against the mounting frame 22, the other end is abutted against the push block 19, the push block 19 slides forwards to drive a traction rod 6 to rotate so as to realize the release and brake separation of the circuit breaker, the utility model discloses the circuit breaker has overload, undervoltage and leakage protection functions, and when the current, the output end of the electromagnetic valve 18 is retracted, and when the output end of the electromagnetic valve 18 is retracted, the reset spring 23 pushes the push block 19 to slide forwards, so that the traction rod 6 is pushed to rotate, the opening of the circuit breaker is realized, and the protection function is realized.

The arc extinguishing chamber 24 is further arranged on the base 111 corresponding to the positions of the moving contact 3 and the static contact 4, an arc extinguishing grid piece 25 is arranged on the arc extinguishing chamber 24, a groove 26 is formed in the middle of the arc extinguishing grid piece 25, the moving contact 3 and the static contact 4 are arranged in the groove 26, a plurality of arc extinguishing layers 27 are arranged on the arc extinguishing grid piece 25 side by side, electric sparks can be generated when the moving contact 3 and the static contact 4 are switched on and switched off when the circuit breaker is used, potential safety hazards can be generated when the electric sparks are too large, the arc extinguishing grid piece 25 can guide the electric sparks of the moving contact 3 and the static contact 4 to the arc extinguishing layers 27, the electric sparks are weakened layer by layer through the arc extinguishing layers 27 arranged side by side, and therefore.

Still be equipped with insulation board 28 on the explosion chamber 24, insulation board 28 sets up between connector lug 2 and explosion chamber 24, still be equipped with slot 29 on the explosion chamber 24, be equipped with inserted block 30 on the insulation board 28, inserted block 30 is inserted and is established in slot 29, can make the electric spark that prevents on the arc extinguishing bars piece 25 when using run to connector lug department, make safer when using, inserted block 30 and slot 29 cooperation can make and prevent insulation board 28 around sliding relatively by oneself when using, make the circuit breaker stability when using better, and can also lead when the installation of insulation board 28, make it is more convenient when the installation.

The upper cover 112 is further provided with an opening 31 for the electronic display screen 16, the control switch 17 and the swing link 5 to leak, which is convenient for the observation of the electronic display screen 16 and the operation of the swing link 5 and the control switch 17.

Claims

1. The utility model provides an electronic type residual current circuit breaker, includes the casing, and both ends all are provided with the connector lug around the casing, and the casing is equipped with moving contact, static contact, pendulum rod, traction lever and moving contact operating device including base and upper cover on the base, and the pendulum rod swing can drive the circuit breaker and close a floodgate and open a floodgate, and the traction lever rotates and can drive moving contact operating device work, its characterized in that: still be equipped with A phase current transformer on the base, B phase current transformer and C phase current transformer, it is equipped with the mounting groove that is used for installing each phase current transformer to correspond each phase current transformer position on the base, each mounting groove sets up side by side and separates through the baffle, still be equipped with the guide slot that is used for supplying each phase current transformer's iron core when each phase current transformer installs and slides in on each mounting groove, on cover and be equipped with the circuit board, each phase current transformer output is connected with the circuit board electricity, be connected with electronic display screen on the circuit board and be used for setting for the control switch through current rating, still be equipped with the electromagnetism release that can drive the circuit breaker separating brake on the.

2. An electronic residual current circuit breaker according to claim 1, characterized in that: electromagnetic release is including the solenoid valve, the ejector pad, zero sequence current transformer sets up on the base, still be equipped with the mounting panel on the base, be equipped with the mounting bracket on the mounting panel, the solenoid valve is fixed to be set up on the mounting bracket, the ejector pad slide set up on the mounting panel and with the cooperation of solenoid valve output linkage, the solenoid valve output can drive the ejector pad and slide backward, still be equipped with between mounting bracket and the ejector pad and be used for promoting the ejector pad gliding reset spring forward when the solenoid valve output is withdrawed, reset spring one end is contradicted on the mounting bracket, the other end is contradicted on the ejector pad, thereby the ejector pad slides forward and can drive the traction lever and rotate and realize circuit.

3. An electronic residual current circuit breaker according to claim 1 or 2, characterized in that: the arc extinguishing chamber is arranged on the base corresponding to the moving contact and the static contact, arc extinguishing grid pieces are arranged on the arc extinguishing chamber, a groove is formed in the middle of each arc extinguishing grid piece, the moving contact and the static contact are arranged in the groove, and the arc extinguishing grid pieces are provided with a plurality of arc extinguishing layers side by side.

4. An electronic residual current circuit breaker according to claim 3, characterized in that: still be equipped with the insulation board on the explosion chamber, the insulation board setting still is equipped with the slot between connector lug and explosion chamber on the explosion chamber, is equipped with the inserted block on the insulation board, and the inserted block is inserted and is established in the slot.

5. An electronic residual current circuit breaker according to claim 4, characterized in that: the upper cover is also provided with an opening for the electronic display screen, the control switch and the oscillating bar to leak.