CN211719546U

CN211719546U - Circuit breaker

Info

Publication number: CN211719546U
Application number: CN202020844528.8U
Authority: CN
Inventors: 朱佳梦
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-10-20
Anticipated expiration: 2030-05-19

Abstract

The utility model provides a circuit breaker, includes the frame, sets up separating brake semi-axis and the undervoltage trip subassembly that are used for realizing the circuit breaker separating brake in the frame, undervoltage trip subassembly is including the undervoltage trip coil assembly that can drive separating brake semi-axis action and the undervoltage judgement coil assembly of control undervoltage trip coil assembly action, and the characteristics are: the undervoltage judging coil assembly comprises a judging coil mounting plate, an undervoltage judging coil, a power supply and a microswitch, wherein the microswitch and the undervoltage judging coil are integrally mounted and are controlled to be opened and closed by the action of the undervoltage judging coil, the undervoltage judging coil and the power supply are arranged on the judging coil mounting plate, the judging coil mounting plate is fixedly arranged on the framework, and the microswitch is connected in series in an undervoltage control loop for controlling the action of the undervoltage tripping coil assembly. The advantages are that: the integrated design of the undervoltage judgment coil assembly enables wiring to be more reasonable and the arrangement inside the circuit breaker to be more concise.

Description

Circuit breaker

Technical Field

The utility model relates to a circuit breaker, concretely relates to circuit breaker with under-voltage tripping assembly.

Background

In the field of electrical engineering, an undervoltage trip control module is generally provided to prevent an electrical device from being uncontrollable in a commissioning state due to a power failure of a secondary circuit.

In the high-voltage electrical field, the secondary control voltage is required to be capable of reliably tripping at a rated value of 65% and not tripping at a rated value of 30%. The undervoltage tripping component of the circuit breaker is driven under the condition that the secondary control voltage gradually attenuates to 30 percent or the power is suddenly cut off, so that the possibility that when the secondary control voltage cannot control the electrical equipment, a primary circuit fails and cannot cut off a fault circuit, and huge loss and risk are caused is avoided.

In order to ensure the reliability and safety of operation, the undervoltage trip assembly is generally built in the circuit breaker. For example, in the prior art, as shown in fig. 1, the undervoltage determining coil assembly 32 of the undervoltage trip assembly 3 adopts a split structure, which causes that components of the circuit breaker to be installed with an undervoltage function are dispersed inside the circuit breaker and long wiring is required. In addition, the realization of the current undervoltage function interferes with the installation position of other selectable functional accessories, so that other functions cannot be realized. Therefore, in order to overcome the drawbacks of the prior art, the applicant has made an advantageous design, and the technical solutions described below have been made in this context.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit breaker, it adopts undervoltage to judge coil pack integrated design structure for walk the line more reasonable, the inside arrangement of circuit breaker is more succinct.

The utility model aims to solve the problem that the circuit breaker comprises a frame, a separating brake semi-axis and an undervoltage tripping component which are arranged in the frame and are used for realizing the separating brake of the circuit breaker, the undervoltage tripping component comprises an undervoltage tripping coil component which can drive the opening half shaft to act and an undervoltage judging coil component which controls the undervoltage tripping coil component to act, the undervoltage judging coil component comprises a judging coil mounting plate, an undervoltage judging coil, a power supply and a microswitch, the micro switch and the undervoltage judging coil are installed into a whole and the opening and closing of the undervoltage judging coil are controlled by the action of the undervoltage judging coil, the undervoltage judging coil and the power supply are arranged on the judging coil mounting plate which is fixedly arranged on the frame, the micro switch is connected in series with an under-voltage control loop for controlling the action of the under-voltage trip coil assembly.

In a specific embodiment of the present invention, the judging coil mounting plate includes a fixing portion, and a side edge of the fixing portion is bent to form a first mounting portion for mounting the under-voltage judging coil and the power supply.

In another specific embodiment of the present invention, one side of the power supply is a clamping end, and the first mounting portion is provided with a clamping groove adapted to the clamping end of the power supply.

In another specific embodiment of the present invention, the shape of the clamping groove of the first mounting portion is adapted to the clamping end of the power supply, and the first mounting portion and the power supply are vertically arranged and vertically mounted.

In another specific embodiment of the present invention, the first mounting portion is provided with a first mounting hole for fixing the under-voltage determining coil.

In yet another specific embodiment of the present invention, the upper edge of the fixing portion is bent to form an extension portion, and the other edge of the extension portion is bent to form a second mounting portion for mounting the other side of the power supply.

In yet another specific embodiment of the present invention, the second mounting portion is parallel to the fixing portion.

In a more specific embodiment of the present invention, the extension portion is provided with a tie hole, and the tie hole is used for binding the connecting wire between the electrical components.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: firstly, a judging coil mounting plate, an undervoltage judging coil, a power supply and a microswitch are integrated into a module, so that the integral design of an undervoltage judging coil assembly is realized, the internal arrangement of the circuit breaker is simpler, the wiring is more reasonable, and the installation is more convenient; secondly, in the existing split installation, a closing locking assembly can be installed at the position where the under-voltage judging coil is installed; thirdly, after the integral design, whether the undervoltage tripping assembly is added or not can be judged according to actual requirements, and the installation is convenient.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a circuit breaker according to the prior art.

Fig. 2 is the internal structure schematic diagram of the circuit breaker of the present invention.

Fig. 3 is the internal assembly schematic diagram of the circuit breaker of the present invention.

Fig. 4 is the utility model discloses an under-voltage structure schematic diagram of judging coil pack.

Fig. 5 is the utility model discloses an under-voltage assembly schematic diagram of judging coil pack.

Fig. 6 is the schematic diagram of the coil mounting plate after turning 90 degrees.

In the figure: 1. the frame, 11, the first baffle, 12, the second baffle; 2. a brake-separating half shaft; 3. the under-voltage tripping device comprises an under-voltage tripping component, 31, an under-voltage tripping coil component, 311, a tripping coil mounting plate, 312, an under-voltage tripping coil, 32, an under-voltage judging coil component, 321, a judging coil mounting plate, 3211, a fixing part, 32111, a fixing hole, 3212, an extending part, 32121, a tie strap hole, 3213, a first mounting part, 32131, a clamping groove, 32132, a first mounting hole, 3214, a second mounting part, 32141, a second mounting hole, 322, an under-voltage judging coil, 323, a power supply, 3231, a clamping end and 324 a micro switch.

Detailed Description

The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments by the applicant is not intended to limit the technical solutions, and any changes made according to the present invention rather than the essential changes should be considered as the protection scope of the present invention.

In the following description, any concept relating to the directions or orientations of up, down, left, right, front, and rear is based on the position shown in the corresponding drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Please refer to fig. 2, the utility model relates to a circuit breaker, including frame 1, the separating brake semi-axis 2 and the undervoltage tripping assembly 3 that set up to be used for realizing the circuit breaker separating brake in frame 1, frame 1 include first baffle 11 and second baffle 12, separating brake semi-axis 2 set up between first baffle 11 and second baffle 12, undervoltage tripping assembly 3 set up in separating brake semi-axis 2's below, undervoltage tripping assembly 3's action can drive separating brake semi-axis 2 action to realize the circuit breaker separating brake.

As shown in fig. 2 and fig. 3, the undervoltage trip assembly 3 includes an undervoltage trip coil assembly 31 and an undervoltage judgment coil assembly 32, the undervoltage trip coil assembly 31 includes a trip coil mounting plate 311 and an undervoltage trip coil 312, the trip coil mounting plate 311 is fixedly disposed on the first partition plate 11, and the undervoltage trip coil 312 is fixedly disposed on the trip coil mounting plate 311.

As shown in fig. 2 to 5, the undervoltage determining coil assembly 32 includes a determining coil mounting plate 321, an undervoltage determining coil 322, a power supply 323, and a micro switch 324, wherein the micro switch 324 and the undervoltage determining coil 322 are integrally mounted and the opening and closing of the undervoltage determining coil 322 is controlled by the operation of the undervoltage determining coil 322. The undervoltage judging coil 322 and the power supply 323 are arranged on the judging coil mounting plate 321, and the power supply 323 is used for supplying power to the undervoltage judging coil 322.

Specifically, referring to fig. 2 to 5 in combination with the side view of the coil-judging mounting plate 321 shown in fig. 6, the coil-judging mounting plate 321 includes a fixing portion 3211, the fixing portion 3211 is provided with a fixing hole 32111, and the coil-judging mounting plate 321 is fixed on the first partition plate 11 through the fixing hole 32111. Thus, the judgment coil mounting plate 321, the undervoltage judgment coil 322, the power supply 323 and the microswitch 324 are fixedly arranged on the first partition plate 11 as an integral module. Since the first partition 11 is vertically installed, the fixing portion 3211 installed to be matched therewith is also vertically installed. The coil mounting plate 321 further includes an extending portion 3212 formed by bending an upper edge of the fixing portion 3211 and a first mounting portion 3213 formed by bending a side edge of the fixing portion 3211, and the other edge of the extending portion 3212 extends downward to form a second mounting portion 3214 arranged parallel to the fixing portion 3211. The extending portion 3212 is provided with a band hole 32121, and the band hole 32121 is used for binding the connecting wires between the electrical components.

More specifically, please refer to fig. 2 to fig. 5 in combination with the side view of the coil mounting plate 321 shown in fig. 6, the first mounting portion 3213 is provided with a clamping groove 32131 for clamping and fixing the power source 323, the clamping groove 32131 is configured to be matched with the clamping end 3231 of the power source 323, and both are vertically arranged, so that the first mounting portion 3213 and the power source 323 are vertically mounted. The first mounting portion 3213 is provided with a first mounting hole 32132, and the undervoltage determining coil 322 is fixedly disposed on the first mounting portion 3213 through the first mounting hole 32132. The second mounting portion 3214 is provided with a second mounting hole 32141, the power supply 323 is provided with a through hole corresponding to the second mounting hole 32141, one side of the power supply 323 is fixed through the second mounting hole 32141 and the through hole of the power supply 323, and the other side of the power supply 323 is fixed through the engagement of the engagement groove 32131 and the engagement portion 3231. In this embodiment, the power supply 323 and the fixing portion 3211 are arranged in parallel, so that the vertical installation of the power supply 323 can be ensured, and for the horizontal installation, the vertical installation can reduce the accumulation of dust or oil dirt, and enhance the heat dissipation of the power supply 323.

The utility model discloses in, undervoltage judge that coil 322 concatenates in secondary circuit, control the break-make electricity of coil according to secondary control voltage's scope in the secondary circuit, power 323, undervoltage trip coil 312, micro-gap switch 324 concatenate in the undervoltage control circuit. When the secondary control voltage provided by the power supply 323 gradually attenuates to 30% or is suddenly cut off, the undervoltage judgment coil 322 loses power, the iron core in the undervoltage judgment coil no longer presses the normally closed contact of the microswitch 324, so that the undervoltage control circuit is switched on, the undervoltage tripping coil 312 is powered on to act, and the tripping half shaft 2 is struck to break the breaker.

Compared with the prior art, the original position where the undervoltage judgment coil 322 is installed on the second partition plate 12 can now be provided with a closing and locking assembly. In addition, the wiring in the circuit breaker can be simpler and more convenient to install. After the overall design, whether the undervoltage tripping assembly is added or not can be judged according to actual requirements, and the undervoltage tripping assembly is convenient to install additionally.

Claims

1. The utility model provides a circuit breaker, includes frame (1), sets up separating brake semi-axis (2) and undervoltage trip subassembly (3) that are used for realizing the circuit breaker separating brake in frame (1), undervoltage trip subassembly (3) including undervoltage trip coil assembly (31) and undervoltage judgement coil assembly (32) of control undervoltage trip coil assembly (31) action that can drive separating brake semi-axis (2) action, its characterized in that: undervoltage judge coil pack (32) including judge coil mounting panel (321), undervoltage judge coil (322), be used for judging power (323) and micro-gap switch (324) of coil (322) power supply for the undervoltage, micro-gap switch (324) and undervoltage judge that coil (322) install into an organic whole and judge its switching of coil (322) action control by the undervoltage, undervoltage judge that coil (322) and power (323) set up on judging coil mounting panel (321), judge that coil mounting panel (321) are fixed to be set up on frame (1), micro-gap switch (324) concatenate in the undervoltage control loop of control undervoltage trip coil pack (31) action.

2. The circuit breaker according to claim 1, wherein the judging coil mounting plate (321) comprises a fixing portion (3211), and a first mounting portion (3213) for mounting the under-voltage judging coil (322) and the power supply (323) is formed by bending a side edge of the fixing portion (3211).

3. The circuit breaker according to claim 2, wherein one side of the power supply (323) is a clamping end (3231), and the first mounting portion (3213) is provided with a clamping groove (32131) adapted to the clamping end (3231) of the power supply (323).

4. The circuit breaker according to claim 3, wherein the shape of the clip groove (32131) of the first mounting portion (3213) is adapted to the clip end (3231) of the power source (323), and the first mounting portion (3213) and the power source (323) are vertically arranged and vertically mounted.

5. The circuit breaker of claim 2, wherein the first mounting portion (3213) is provided with a first mounting hole (32132) for fixing the undervoltage determining coil (322).

6. The circuit breaker as claimed in claim 2, wherein the upper edge of the fixing portion (3211) is bent to form an extending portion (3212), and the other edge of the extending portion (3212) is bent to form a second mounting portion (3214) for mounting the other side of the power supply (323).

7. The circuit breaker as claimed in claim 6, wherein said second mounting portion (3214) is parallel to the securing portion (3211).

8. The circuit breaker as claimed in claim 6, wherein said extension portion (3212) is provided with a tie hole (32121), said tie hole (32121) being used for binding a connection wire between electrical components.