Temperature control device for circuit breaker

Abstract

The utility model discloses a temperature control device for a circuit breaker, which comprises a temperature sensor, a controller and an electromagnet shunt tripping module, the temperature sensor and the electromagnet shunt tripping module are connected with the controller, and the temperature sensor is installed on a cable controlled by the circuit breaker and used for collecting the temperature of the cable and the temperature of a cable joint. The temperature sensor is installed on the circuit breaker and transmits temperature information to the controller for processing, the electromagnet shunt tripping module is installed on the circuit breaker and used for controlling tripping of the circuit breaker, and the controller controls whether the electromagnet shunt tripping module works or not; the control of the tripping of the circuit breaker through temperature detection is an effective cable protection means; by monitoring the temperature of the cable in real time and finding and processing abnormal conditions in time, the risk of cable line faults can be greatly reduced, and safe and stable operation of a power system is guaranteed; the automatic tripping mechanism can effectively prevent faults such as short circuit and overload of the cable, and safe and stable operation of a power system is protected.

Description

Technical Field

[0001] This utility model relates to a temperature control device, specifically a temperature control device for a circuit breaker. Background Technology

[0002] Existing highway cable lines, especially those for long-distance power supply such as information boards, surveillance cameras, and ETC gantries, are prone to damage due to moisture, corrosion, and construction work. This is particularly true at cable joints. Intermediate joints, used to connect two cables, are susceptible to problems like loose connections and weak contact, leading to overheating, cable damage, or fire, thus compromising the safety of the cable line. Terminal joints, used to connect cables to circuit breakers, are also prone to loose connections or corrosion over time. These issues can cause overheating at the connection point between the terminal joint and the relay, resulting in cable damage or fire, again affecting the safety of the cable line.

[0003] While some existing circuit breakers have high-temperature detection capabilities, they only perform internal detection and do not detect the locations of intermediate joints and terminal joints, thus failing to meet the requirements. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a temperature control device for circuit breakers. It collects temperature data by installing temperature sensors around cables and cable joints, and sends the data to the controller via signal transmission. When the cable temperature exceeds the preset safety threshold in the controller, the alarm module will issue an alarm and trigger the electromagnet shunt trip module to trip the circuit breaker, thereby cutting off the power supply and preventing damage or fire caused by cable overheating, thus solving the above problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a temperature control device for a circuit breaker, comprising: a temperature sensor, a controller, and an electromagnet shunt trip module. The temperature sensor and the electromagnet shunt trip module are connected to the controller. The temperature sensor is installed on the cable controlled by the circuit breaker to collect the temperature of the cable and cable joints, and transmits the temperature information to the controller for processing. The electromagnet shunt trip module is installed on the circuit breaker to control the circuit breaker tripping. The controller controls whether the electromagnet shunt trip module is working.

[0006] Furthermore, the cable connector includes: an intermediate connector and a terminal connector.

[0007] Furthermore, the controller is equipped with a plastic housing.

[0008] Furthermore, the controller includes: a central processing unit module, a temperature setting module, a display module, and a shunt trip drive circuit. The temperature setting module, display module, and shunt trip drive circuit are connected to the central processing unit module. The display module displays information from the central processing unit module, and the temperature setting module adjusts the temperature parameters within the central processing unit module. The shunt trip drive circuit drives the electromagnet shunt trip module to operate.

[0009] Furthermore, the controller is also equipped with a power module, which supplies power to the entire controller.

[0010] Furthermore, it also includes an alarm module, which is connected to the central processing unit module and is controlled by the central processing unit module to trigger an alarm.

[0011] Furthermore, the alarm module includes: resistor R3, transistor Q2, and a driver peripheral buzzer alarm module. One end of resistor R3 is connected to the central processing unit module, and the other end is connected to the base (b) of transistor Q2. The emitter (e) of transistor Q2 is grounded, and the collector (c) of transistor Q2 is connected to the negative terminal of the power supply through the driver peripheral buzzer alarm module.

[0012] Furthermore, the shunt trip drive circuit includes: resistor R1, resistor R2, relay module RL1, and transistor Q1. The base (b) of transistor Q1 is connected to the central processing unit module through resistor R1, the collector (c) of transistor Q1 is connected to the negative power supply through the coil of relay module RL1, and the emitter (e) of transistor Q1 is grounded. One end of the electromagnet shunt trip module is connected to the emitter of transistor Q1, and the other end is connected to the negative power supply through resistor R2 and the normally open contact of relay module RL1.

[0013] Furthermore, the temperature setting module is equipped with three adjustment buttons. One end of each of the three adjustment buttons is connected to the negative terminal of the power supply, and the other end of each of the three adjustment buttons is connected to the central processing unit module.

[0014] Furthermore, it also includes a mounting block that cooperates with the electromagnet shunt trip module, the mounting block being installed at the switch tripping point of the circuit breaker.

[0015] The beneficial effects of this utility model are: using temperature detection to control circuit breaker tripping is an effective means of cable protection; by monitoring cable temperature in real time, abnormal situations can be detected and handled in a timely manner, which can greatly reduce the risk of cable line faults and ensure the safe and stable operation of the power system; this automatic tripping mechanism can effectively prevent cable faults such as short circuits and overloads, and protect the safe and stable operation of the power system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0017] Figure 2 This is a schematic block diagram of the structure of this utility model without an alarm module;

[0018] Figure 3 This is a schematic diagram of the present invention without a power supply module;

[0019] In the diagram: 1. Controller; 2. Electromagnetic shunt trip module; 3. Temperature sensor; 4. Circuit breaker; 5. Cable. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0022] like Figure 1 As shown, a temperature control device for a circuit breaker includes: a temperature sensor 3, a controller 1, and an electromagnet shunt trip module 2. The temperature sensor 3 and the electromagnet shunt trip module 2 are electrically connected to the controller 1. The temperature sensor 3 is installed on the cable 5 controlled by the circuit breaker 4 to collect the temperature of the cable 5 and the cable 5 connector, and transmits the temperature information to the controller 1 for processing. The electromagnet shunt trip module 2 is installed on the circuit breaker 4 to control the circuit breaker 4 to trip. The controller 1 controls whether the electromagnet shunt trip module 2 is working.

[0023] Cable connector 5 includes: intermediate connector and terminal connector, because cable connector 5 is the most prone to failure and overheating.

[0024] The controller 1 is equipped with a plastic housing, which can provide insulation and effectively protect the controller 1.

[0025] like Figure 2-3 As shown, controller 1 includes: a central processing unit module, a temperature setting module, a display module, and a shunt trip drive circuit. The temperature setting module, display module, and shunt trip drive circuit are connected to the central processing unit module. The display module is used to display information of the central processing unit module, the temperature setting module is used to adjust the temperature parameters in the central processing unit module, and the shunt trip drive circuit is used to drive the electromagnet shunt trip module 2 to work.

[0026] like Figure 2As shown, the controller 1 is also equipped with a power supply module, which supplies power to the entire controller 1. The power supply module includes: a DC12 power supply, an LDO step-down circuit, and an overcurrent detection module. The DC12 power supply supplies power to the electrical components in the controller 1 through the LDO step-down circuit and the overcurrent detection module.

[0027] like Figure 3 As shown, controller 1 also includes an alarm module, which is connected to the central processing unit module and is controlled by the central processing unit module to trigger an alarm.

[0028] like Figure 3 As shown, the alarm module includes: resistor R3, transistor Q2, and a driver peripheral buzzer alarm module. One end of resistor R3 is connected to the central processing unit module, and the other end is connected to the base (b) of transistor Q2. The emitter (e) of transistor Q2 is grounded, and the collector (c) of transistor Q2 is connected to the negative terminal of the power supply through the driver peripheral buzzer alarm module. The driver peripheral buzzer alarm module provides audible warnings or alarms.

[0029] like Figure 3 As shown, the shunt trip drive circuit includes: resistor R1, resistor R2, relay module RL1, and transistor Q1. The base (b) of transistor Q1 is connected to the central processing unit module through resistor R1, the collector (c) of transistor Q1 is connected to the negative power supply through the coil of relay module RL1, and the emitter (e) of transistor Q1 is grounded. One end of the electromagnet shunt trip module 2 is connected to the emitter of transistor Q1, and the other end is connected to the negative power supply through resistor R2 and the normally open contact of relay module RL1.

[0030] like Figure 3 As shown, the temperature setting module has three adjustment buttons. One end of each of the three adjustment buttons is connected to the negative terminal of the power supply, and the other end of each of the three adjustment buttons is connected to the central processing unit module.

[0031] When the switch in circuit breaker 4 is made of a material that does not contain metallic iron, the electromagnet shunt trip module 2 cannot control circuit breaker 4. Therefore, a temperature control device for circuit breaker 4 further includes: a mounting block that cooperates with the electromagnet shunt trip module 2. The mounting block is installed at the switch trip position of circuit breaker 4 as needed, and works by the magnetic force generated between the electromagnet shunt trip module 2 and the mounting block. The mounting block is made of a material containing metallic iron.

[0032] Selection of temperature sensor 3: The temperature sensor 3 needs to be selected according to the characteristics of cable 5 and working environment. The temperature sensor 3 should have high measurement accuracy, stability and reliability to ensure the accuracy of monitoring data.

[0033] Installation of temperature sensor 3: Install the temperature detection module in a suitable position around cable 5 to accurately monitor the temperature of the cable. The relevant safety specifications should be followed during installation to ensure the stability and safety of temperature sensor 3.

[0034] Debugging and testing:

[0035] After the installation of the temperature control device for circuit breaker 4 is completed, debugging and testing are required. By simulating different fault conditions, the working ability between the temperature control device and circuit breaker 4 is verified to ensure that the power supply can be cut off in a timely and accurate manner during actual operation.

[0036] During work:

[0037] Temperature sensor 3 transmits data to controller 1. Controller 1 sets different temperature values. When the detected temperature is higher than the set temperature, controller 1 drives electromagnet shunt trip module 2 to supply power to the internal trip unit of circuit breaker 4, thereby realizing the tripping function of circuit breaker 4. The temperature setting module is used to set different temperature values.

[0038] When an abnormal temperature rise is detected in cable 5, controller 1 will activate control relay module RL1; after being energized, electromagnet shunt trip module 2 will directly drive the circuit breaker 4 of cable 5 to disconnect, preventing cable 5 from being damaged due to overheating; this automatic tripping mechanism can effectively prevent cable 5 from short circuits, overloads and other faults, and protect the safe and stable operation of the power system.

[0039] A temperature control device for circuit breaker 4 may also include a remote communication module, through which remote control can be achieved.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A temperature control device for a circuit breaker, characterized in that, include: Temperature sensor, controller, and electromagnet shunt trip module are connected to the controller. The temperature sensor is installed on the cable controlled by the circuit breaker to collect the temperature of the cable and cable joints and transmit the temperature information to the controller for processing. The electromagnet shunt trip module is installed on the circuit breaker to control the circuit breaker to trip. The controller controls whether the electromagnet shunt trip module is working. The controller includes: a central processing unit module, a temperature setting module, a display module, and a shunt trip drive circuit. The temperature setting module, the display module, and the shunt trip drive circuit are connected to the central processing unit module. The display module is used to display information of the central processing unit module, the temperature setting module is used to adjust the temperature parameters in the central processing unit module, and the shunt trip drive circuit is used to drive the electromagnet shunt trip module to work. The controller is also equipped with a power module, which supplies power to the entire controller. The shunt trip drive circuit includes: resistor R1, resistor R2, relay module RL1, and transistor Q1. The base (b) of transistor Q1 is connected to the central processing unit module through resistor R1, the collector (c) of transistor Q1 is connected to the negative power supply through the coil of relay module RL1, and the emitter (e) of transistor Q1 is grounded. One end of the electromagnet shunt trip module is connected to the emitter of transistor Q1, and the other end is connected to the negative power supply through resistor R2 and the normally open contact of relay module RL1.

2. The temperature control device for a circuit breaker according to claim 1, characterized in that, The cable connectors include: intermediate connectors and terminal connectors.

3. The temperature control device for a circuit breaker according to claim 1, characterized in that, The controller has a plastic housing.

4. A temperature control device for a circuit breaker according to claim 1, characterized in that, Also includes: An alarm module is connected to a central processing unit (CPU) module, and the CPU module controls the alarm module to sound an alarm.

5. A temperature control device for a circuit breaker according to claim 4, characterized in that, The alarm module includes: resistor R3, transistor Q2, and a driver peripheral buzzer alarm module. One end of resistor R3 is connected to the central processing unit module, and the other end is connected to the base (b) of transistor Q2. The emitter (e) of transistor Q2 is grounded, and the collector (c) of transistor Q2 is connected to the negative terminal of the power supply through the driver peripheral buzzer alarm module.

6. A temperature control device for a circuit breaker according to claim 1, characterized in that, The temperature setting module has three adjustment buttons. One end of each adjustment button is connected to the negative terminal of the power supply, and the other end of each adjustment button is connected to the central processing unit module.

7. A temperature control device for a circuit breaker according to claim 1, characterized in that, Also includes: A mounting block that works in conjunction with an electromagnet shunt trip module, the mounting block being installed at the switch tripping point of the circuit breaker.

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