An indirect measurement high-voltage cabinet contact temperature remote alarm device

Abstract

The utility model discloses an indirect measurement high -voltage cabinet contact temperature remote alarm device relates to high -voltage cabinet technical field. The indirect measurement high -voltage cabinet contact temperature remote alarm device includes PLC control system, temperature sensor, audible -visual annunciator and positioning unit. The indirect measurement high -voltage cabinet contact temperature remote alarm device passes through the installation temperature sensor under the high -voltage cabinet relay instrument room lower bottom surface, and the signal is teletransmission to PLC control system to the indirect measurement contact temperature, realizes the real -time remote monitoring to contact temperature, and simultaneously, through the design of positioning unit, makes temperature sensor convenient to dismount, and easy maintenance, and stable operation. When the device detects that temperature exceeds the set value, the system can send audible -visual alarm in time, and reminds operating personnel to take measures quickly. This effectively avoids the high -voltage cabinet tripping accident caused by the temperature too high.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switchgear technology, specifically to a remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear. Background Technology

[0002] In the 10KV high-voltage distribution room of the coking plant, the dry quenching coke power generation high-voltage switchgear and the power station grid connection high-voltage switchgear are both Class A key equipment. Their normal operation is crucial to ensuring the stable power generation of the dry quenching coke power station.

[0003] However, the contacts of these two high-voltage switchgear operate at high temperatures under heavy loads. While existing technology includes wireless monitoring devices for contact temperature, the wireless signal transmission is prone to failure, maintenance is inconvenient, and frequent abnormal temperature readings are common. Furthermore, the lack of remote alarm functionality necessitates constant on-site inspections by operators, resulting in high labor intensity. Inadequate inspections can lead to undetected, sustained increases in contact temperature, causing the high-voltage switchgear to trip and severely disrupting company production. To address these shortcomings, this invention provides a remote alarm device for indirectly measuring the contact temperature of high-voltage switchgear, thus resolving the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a remote alarm device for indirectly measuring the contact temperature of high-voltage switchgear. By installing a temperature sensor on the underside of the relay instrument compartment of the high-voltage switchgear, the contact temperature is indirectly measured, and the signal is transmitted remotely to the PLC control system, enabling real-time remote monitoring of the contact temperature. Furthermore, the positioning unit design facilitates easy installation and removal of the temperature sensor, making it easy to maintain and ensuring stable operation. When the device detects a temperature exceeding the set value, the system promptly issues an audible and visual alarm, alerting operators to take immediate action. This effectively prevents high-voltage switchgear tripping accidents caused by overheating, ensures stable power generation in dry quenching power plants, reduces the frequency and workload of operator inspections, and improves equipment reliability and production efficiency.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear, comprising a PLC control system, a temperature sensor, an audible and visual alarm, and a positioning unit;

[0006] The PLC control system is installed inside the main body of the high-voltage cabinet, and the PLC control system is equipped with a first cable and a second cable.

[0007] The temperature sensor is connected to the first cable and installed on the bottom surface of the relay instrument compartment of the high-voltage cabinet body;

[0008] The audible and visual alarm is connected to the second cable;

[0009] The positioning unit is located inside the main body of the high-voltage cabinet and is used to limit the temperature sensor.

[0010] Preferably, the positioning unit includes:

[0011] A fixing frame is fixedly connected to the inner wall of the high-voltage switchgear body;

[0012] The lead screw is threadedly connected to the fixed frame;

[0013] The pressure plate is rotatably connected to the lead screw and slidably connected to the fixing frame, and the temperature sensor is clamped between the pressure plate and the high-voltage cabinet body.

[0014] Preferably, the pressure plate has a slot, and a card block is fixedly connected to the temperature sensor, with the card block and the slot engaging.

[0015] Preferably, a sleeve is fixedly connected to the fixing frame, and a lateral support rod is slidably connected inside the sleeve, the lateral support rod being fixedly connected to the pressure plate.

[0016] Preferably, a rotating handle is fixedly connected to the lead screw.

[0017] Preferably, a cable clip for connecting the first cable is fixedly connected to the pressure plate.

[0018] Preferably, the fixing frame has a groove corresponding to the position of the first cable.

[0019] This utility model discloses a remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear, which has the following beneficial effects:

[0020] This remote alarm device for indirectly measuring the contact temperature of high-voltage switchgear uses a temperature sensor installed on the underside of the relay instrument compartment of the high-voltage switchgear to indirectly measure the contact temperature and transmit the signal to the PLC control system, enabling real-time remote monitoring of the contact temperature. Furthermore, the positioning unit design facilitates easy installation and removal of the temperature sensor, making it easy to maintain and ensuring stable operation. When the device detects a temperature exceeding the set value, the system promptly issues an audible and visual alarm, alerting operators to take immediate action. This effectively prevents high-voltage switchgear tripping accidents caused by overheating, ensures stable power generation in the dry quenching coke power plant, reduces the frequency and workload of operator inspections, and improves equipment reliability and production efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the positioning unit of this utility model;

[0024] Figure 3 This is a disassembly diagram of the temperature sensor of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the pressure plate of this utility model.

[0026] In the diagram: 1. High-voltage cabinet body; 2. PLC control system; 21. First cable; 22. Second cable; 3. Temperature sensor; 31. Card block; 4. Audible and visual alarm; 5. Positioning unit; 51. Fixing frame; 511. Sleeve; 512. Lateral support rod; 513. Cable tray; 52. Lead screw; 521. Rotating handle; 53. Pressure plate; 531. Card slot; 532. Cable clamp. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] This application provides a remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear, which solves the problems of existing high-voltage switchgear temperature detection devices, such as easy failure of wireless signal transmission, inconvenient maintenance, frequent abnormal temperature display, and lack of remote alarm function.

[0029] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0030] Example 1: This utility model embodiment discloses a remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear, according to the attached... Figure 1-4 As shown, it includes a PLC control system 2, a temperature sensor 3, an audible and visual alarm 4, and a positioning unit 5;

[0031] The PLC control system 2 is located inside the main body 1 of the high-voltage cabinet. The PLC control system 2 is equipped with a first cable 21 and a second cable 22. The PLC control system 2 can receive temperature signals from the temperature sensor 3 and determine whether the temperature exceeds the set value according to a preset program, thereby controlling the audible and visual alarm 4 to issue an alarm signal. Its function is to integrate and process temperature data to achieve automated control, making the entire alarm process more accurate and timely.

[0032] Temperature sensor 3 is connected to the first cable 21 and installed on the lower surface of the relay instrument compartment of the high-voltage switchgear body 1. Since an increase in the circuit breaker contact temperature will simultaneously raise the temperature of the high-voltage switchgear body, and the temperature of the lower plane of the relay instrument compartment is approximately equal to the contact temperature, installing temperature sensor 3 at this location allows for indirect measurement of the contact temperature. Its advantage lies in accurately acquiring data related to the contact temperature, providing a reliable basis for subsequent temperature assessment.

[0033] Temperature sensor 3 can be a magnetically attached PT100 resistance temperature detector (RTD) to indirectly measure the contact temperature and transmit the signal to the PLC control system 2 to achieve real-time remote monitoring of the contact temperature.

[0034] The audible and visual alarm 4 is connected to the second cable 22. When the PLC control system 2 determines that the temperature exceeds the set value, the audible and visual alarm 4 will emit an audible and visual alarm signal to remind the operator to take timely measures. Its function is to intuitively convey abnormal temperature information to the operator, ensuring that the operator can quickly detect and handle the problem.

[0035] The positioning unit 5 is located inside the main body 1 of the high-voltage cabinet and is used to limit the position of the temperature sensor 3. The positioning unit 5 ensures that the temperature sensor 3 can be stably and accurately installed in the designated position, thus guaranteeing the accuracy of the measurement data.

[0036] The positioning unit 5 includes a fixing frame 51, a lead screw 52, ​​and a pressure plate 53;

[0037] The mounting bracket 51 is fixedly connected to the inner wall of the high-voltage cabinet body 1; the mounting bracket 51 provides a stable support structure for the entire positioning unit 5, so that the temperature sensor 3 can be reliably installed inside the high-voltage cabinet.

[0038] The lead screw 52 is threaded onto the fixed bracket 51. By rotating the lead screw 52, ​​the position of the pressure plate 53 can be adjusted, thereby clamping and releasing the temperature sensor 3, facilitating the installation and removal of the temperature sensor 3. A rotating handle 521 is fixedly connected to the lead screw 52, ​​allowing the operator to manually rotate the lead screw 52, ​​improving the convenience of operation.

[0039] The pressure plate 53 is rotatably connected to the lead screw 52 and slidably connected to the fixing frame 51. The temperature sensor 3 is clamped between the pressure plate 53 and the high-voltage cabinet body 1. The pressure plate 53 has a slot 531, and a locking block 31 is fixedly connected to the temperature sensor 3. The locking block 31 and the slot 531 engage, further enhancing the stability of the temperature sensor 3 installation and preventing it from loosening or shifting during operation.

[0040] The pressure plate 53 is fixedly connected with a wire clip 532 for securing the first cable 21, which can organize and fix the first cable 21 to avoid the cable mess affecting the operation and appearance of the equipment.

[0041] The pressure plate 53 has a slot 531, and the temperature sensor 3 is fixedly connected to a block 31, which is engaged with the slot 531.

[0042] A sleeve 511 is fixedly connected to the mounting bracket 51. A lateral support rod 512 is slidably connected inside the sleeve 511, and the lateral support rod 512 is fixedly connected to the pressure plate 53. The sleeve 511 and the lateral support rod 512 provide lateral support for the movement of the pressure plate 53, making the pressure plate 53 more stable during movement and ensuring the accuracy and stability of the installation position of the temperature sensor 3.

[0043] The mounting bracket 51 has a cable groove 513 corresponding to the position of the first cable 21. The cable groove 513 facilitates the arrangement of the first cable 21.

[0044] The operation steps of this remote alarm device for indirectly measuring the contact temperature of the high-voltage switchgear are as follows: First, engage the temperature sensor 3 with the locking block 31 and the locking slot 531 of the pressure plate 53. Then, rotate the rotating handle 521 to rotate the lead screw 52, ​​which will move the pressure plate 53 to clamp and fix the temperature sensor 3 in a suitable position on the bottom surface of the relay instrument compartment of the high-voltage switchgear body 1. At the same time, use the wire clip 532 to fix the first cable 21 and connect its other end to the PLC control system 2. Connect the audible and visual alarm 4 to the corresponding position on the second cable 22. After the installation is completed, the PLC control system 2 is powered on and runs, receiving the temperature signal from the temperature sensor 3 in real time. When the temperature exceeds the set value, the audible and visual alarm 4 is automatically triggered to issue an audible and visual alarm, reminding the operator to deal with it in time.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear, characterized in that, include: The PLC control system (2) is located inside the high-voltage cabinet body (1). The PLC control system (2) is equipped with a first cable (21) and a second cable (22). The temperature sensor (3) is connected to the first cable (21) and installed on the bottom surface of the relay instrument compartment of the high-voltage cabinet body (1). The audible and visual alarm (4) is connected to the second cable (22). The positioning unit (5) is located inside the high-voltage cabinet body (1) and is used to limit the temperature sensor (3).

2. The remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear according to claim 1, characterized in that, The positioning unit (5) includes: a fixed frame (51) fixedly connected to the inner wall of the high voltage cabinet body (1); a screw (52) threadedly connected to the fixed frame (51); and a pressure plate (53) rotatably connected to the screw (52) and slidably connected to the fixed frame (51). The temperature sensor (3) is clamped between the pressure plate (53) and the high voltage cabinet body (1).

3. The remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear according to claim 2, characterized in that, The pressure plate (53) has a slot (531) and the temperature sensor (3) is fixedly connected to a block (31), and the block (31) and the slot (531) are engaged.

4. The remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear according to claim 2, characterized in that, A sleeve (511) is fixedly connected to the fixed frame (51), and a lateral support rod (512) is slidably connected inside the sleeve (511). The lateral support rod (512) is fixedly connected to the pressure plate (53).

5. The remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear according to claim 2, characterized in that, A rotating handle (521) is fixedly connected to the lead screw (52).

6. The remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear according to claim 2, characterized in that, A wire clip (532) for securing the first cable (21) is fixedly connected to the pressure plate (53).

7. The remote alarm device for indirectly measuring the contact temperature of a high-voltage switchgear according to claim 2, characterized in that, The mounting bracket (51) has a groove (513) corresponding to the position of the first cable (21).

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