CN213483600U

CN213483600U - Circuit breaker contact isolation recognition device

Info

Publication number: CN213483600U
Application number: CN202022133432.3U
Authority: CN
Inventors: 甄乐忠; 黄国民; 杨小红; 张嘉瑜
Original assignee: Zhejiang Dadongwu Group Construction Co Ltd
Current assignee: Zhejiang Dadongwu Group Construction Co Ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-06-18
Anticipated expiration: 2030-09-25

Abstract

A breaker contact isolation recognition device belongs to the technical field of breakers. The utility model comprises a shell, an identification circuit arranged in the shell and a fixing piece arranged at the back side of the shell; the identification circuit comprises an LED and a divider resistor which are connected in series, one end of the identification circuit is connected with a live wire of the circuit breaker, and the other end of the identification circuit is connected with a zero line; the shell is provided with a light emitting hole matched with the LED. The utility model discloses can the accurate state of instructing the circuit breaker, ensure staff's security, the cost is lower simultaneously, easily promotes.

Description

Circuit breaker contact isolation recognition device

Technical Field

The utility model relates to a circuit breaker technical field especially relates to a recognition device is kept apart to circuit breaker contact.

Background

Currently, air switches on the market are divided into two types with and without isolation function: after the air switch with the isolation function is disconnected, people can clearly see the state or indication whether the contact is disconnected or not by eyes; after the air switch without the isolation function is disconnected, people cannot visually judge whether the contact of the air switch is completely disconnected, and need to judge whether the contact of the air switch is disconnected by means of a tool, otherwise, great potential safety hazards can be caused if maintenance operation is performed in an infringement manner. In fact, due to the fact that the air switches on the market are poor in quality, the power distribution mode can not meet the standard requirements, and accidents that contacts are stuck when the air switches are tripped due to protection often happen. The two different air switches have the selling price difference of about 15% -30%, and the selling price is from tens of yuan to thousands of yuan according to the size of the air switches.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that above-mentioned prior art exists, provide a breaker contact isolation recognition device, its state that can the accurate indication circuit breaker ensures staff's security, and the cost is lower simultaneously, easily promotes.

The utility model aims at realizing through the following technical scheme:

a circuit breaker contact isolation recognition device comprises a shell, a recognition circuit arranged in the shell and a fixing piece arranged on the back side of the shell; the identification circuit comprises an LED and a divider resistor which are connected in series, one end of the identification circuit is connected with a live wire of the circuit breaker, and the other end of the identification circuit is connected with a zero line; and the shell is provided with a light emitting hole matched with the LED.

The utility model discloses a theory of operation: when the LED emits light, the circuit breaker is normally conducted; when the LED is extinguished, the circuit breaker is opened. Of course, one set of LEDs and voltage dividing resistors can only connect the live wire and the zero wire of one phase of the circuit breaker, i.e. indicate the on-off state of one phase of the circuit breaker. Therefore, according to the specific specification of the circuit breaker, different numbers of identification devices need to be arranged, or an identification circuit in one identification device needs to be provided with different groups of LEDs and voltage dividing resistors. In addition, the entire identification device can be mounted near the circuit breaker by a fixture.

As the utility model discloses preferably, identification circuit specifically includes the LED and the divider resistance that the multiunit is established ties respectively, and its one end connects the looks live wire of circuit breaker respectively, and the other end connects the zero line in parallel. Under this kind of implementation mode, a recognition device can realize the state identification to heterogeneous circuit breaker, convenient to use, and the cost is lower simultaneously.

As the utility model discloses it is preferred, the mounting is two-sided sponge rubber, through simple swift operation, can install recognition device on the block terminal.

As the utility model discloses it is preferred, the mounting is the nylon ribbon, can tie up recognition device on being qualified for the next round of competitions of circuit breaker, and it is difficult for receiving the temperature influence in the distribution box, has better stability and life.

As the utility model discloses it is preferred, the lead wire colour at identification circuit both ends is different to improve staff's wiring efficiency, avoid connecing wrong line.

Preferably, the length of the lead wires at the two ends of the identification circuit is 200mm-400mm, and the lead wires with enough length are convenient for wiring operation and adjustment of the installation position of the whole device.

As the utility model discloses it is preferred, LED's luminous colour is red, and is more striking, improves the indicating effect.

The utility model has the advantages that:

1. the state of circuit breaker contact can accurate instruction, ensures staff's security.

2. Simple structure, simple to operate, the cost is lower, easily promotes.

Drawings

Fig. 1 is a front view of an embodiment 1 of a contact isolation and identification device of a circuit breaker according to the present invention;

fig. 2 is a side view of an embodiment 1 of a circuit breaker contact isolation identification apparatus of the present invention;

fig. 3 is a circuit diagram of an identification circuit of embodiment 1 of the contact isolation and identification device of the circuit breaker according to the present invention;

fig. 4 is a circuit diagram of the identification circuit of embodiment 2 of the contact isolation device of the circuit breaker.

1-a shell; 3-nylon cable tie; 21-an LED; 22-a voltage dividing resistor; 23-lead.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1-3, a contact isolation identification device for a circuit breaker comprises a housing 1, an identification circuit arranged in the housing 1, and a nylon cable tie 3 arranged at the back side of the housing 1; the identification circuit comprises an LED21 and a divider resistor 22 which are connected in series, and a light emitting hole for the LED to extend out is arranged on the shell 1. The leads 23 at the two ends of the identification circuit extend out of the shell, the lead on one side of the anode of the LED is connected with a live wire of the circuit breaker, and the lead on one side of the cathode of the LED is connected with a zero line. And the shell 1 is bound to the corresponding outgoing line of the circuit breaker through a nylon binding belt 3, so that a worker can quickly identify the phase line indicated by the identification device. Of course, depending on the number of specific phases of the circuit breaker, a corresponding number of identification devices need to be installed. In addition, the shell can be adhered to the corresponding position by double-sided sponge glue or mounted to the corresponding position by other fixing parts. When the circuit breaker is used, the LED on each identification device respectively indicates the on-off state of the phase line of the corresponding circuit breaker, and when the LED is on, the phase line is conducted; when the LED is extinguished, the phase line is disconnected.

Specifically, the specification of the LED is 2V, 20mA, and the specification of the voltage dividing resistor is 11.0k Ω, 5W, so as to ensure that the LED has a relatively striking brightness. The lead lengths of the two poles of the identification circuit are 300 mm. In order to improve the wiring efficiency and accuracy of workers, the leads at the two poles of the identification circuit can be distinguished by different colors, for example, the positive lead connected with a live wire is red, and the negative lead connected with a zero wire is black. In addition, in order to improve the eye-catching degree of the LED light, an LED with red light is generally used.

Example 2

As shown in fig. 4, a contact isolation identification device for a circuit breaker comprises a housing, an identification circuit arranged in the housing, and double-sided sponge rubber arranged on the back side of the housing; the identification circuit comprises three groups of LEDs 21 and a divider resistor 22 which are respectively connected in series, and three light emitting holes for the LEDs to extend out are arranged on the shell. The leads 23 at the two ends of the identification circuit extend out of the shell, three leads extending out of the positive side of the three groups of LEDs are respectively connected with a three-phase live wire of the circuit breaker, and the negative ends of the three groups of LEDs are connected with a lead in parallel to be connected with a zero line. And the casing passes through on two-sided sponge rubber pastes to the block terminal, also can adopt the nylon ribbon to tie up the casing to the circuit breaker be qualified for the next round of competitions, or adopt other fixed part to install the casing near the circuit breaker. When the circuit breaker is used, the three LEDs on the identification device respectively indicate the on-off states of three phase lines of the circuit breaker, and when one LED is bright, the corresponding phase line is turned on; and when the circuit is extinguished, the corresponding phase line is disconnected. According to the embodiment, the three groups of LEDs are integrated in one shell, so that the installation operation can be simplified, and the cost is reduced. However, the operator cannot quickly discern the phase line indicated by each LED. Therefore, we can add some different designs, such as stamping different colors on the sides of three light emitting holes on the shell: red, yellow and blue, corresponding red, yellow and blue are also adopted by the lead colors of the three groups of LED anodes, black is adopted by the common lead of the three groups of LED cathodes, and the phase lines corresponding to different LEDs can be rapidly distinguished according to the color of the side of the luminous hole and the color of the anode lead. Or three LEDs which can respectively emit red, yellow and blue light are adopted to be matched with the lead wires with corresponding colors, and the purpose can be achieved.

Specifically, the specification of the LED is 2V and 20mA, and the specification of the voltage dividing resistor is 11.0k Ω and 5W. The lead lengths of the two poles of the identification circuit are 300 mm.

The above description is only the specific embodiment of the preferred embodiment of the present invention, and this specific embodiment is based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A circuit breaker contact isolation recognition device is characterized by comprising a shell, a recognition circuit arranged in the shell and a fixing piece arranged on the back side of the shell; the identification circuit comprises an LED and a divider resistor which are connected in series, one end of the identification circuit is connected with a live wire of the circuit breaker, and the other end of the identification circuit is connected with a zero line; and the shell is provided with a light emitting hole matched with the LED.

2. The apparatus according to claim 1, wherein the identification circuit comprises a plurality of sets of LEDs and voltage-dividing resistors connected in series, one end of each set of LED and voltage-dividing resistor is connected to a live line of one phase of the circuit breaker, and the other end of each set of LED and voltage-dividing resistor is connected to a neutral line.

3. The apparatus as claimed in claim 1, wherein the fixing member is a double-faced sponge rubber.

4. The apparatus of claim 1, wherein the fastener is a nylon tie.

5. The circuit breaker contact isolation identification device of claim 1, wherein the leads at both ends of the identification circuit are different colors.

6. The circuit breaker contact isolation identification device of claim 1, wherein the length of the leads at both ends of the identification circuit is 200mm-400 mm.

7. The circuit breaker contact isolation identification device of claim 1, wherein the LED emits light in a red color.