An internally embedded temperature measuring mechanism for a hollow reactor

Abstract

This utility model discloses an internal pre-embedded temperature measuring mechanism for a hollow reactor, comprising several temperature measuring devices mounted on star-shaped booms on the upper and lower sides of the reactor coil or on pull rods between the reactor coils, and a signal transceiver mounted below the reactor coils. The temperature measuring devices are electrically connected to the signal transceiver via optical fibers. Each temperature measuring device includes mounting clamps mounted on the star-shaped booms or pull rods, with temperature sensors mounted on the mounting clamps via telescopic rods. The signal transceiver has several optical fiber interfaces, and a flexible steel strip is mounted on its bottom via a fixing block. The flexible steel strip also has mounting holes through which bolts pass. This utility model's temperature sensors can change position according to the actual detection location, accurately monitoring the internal temperature of the hollow reactor and providing strong protection for the safe and stable operation of the power system.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage power transmission equipment technology, and more specifically to an internal pre-embedded temperature measuring mechanism for a hollow reactor. Background Technology

[0002] Temperature detection in high-voltage power transmission and distribution equipment such as transformers, reactors, circuit breakers, and instrument transformers typically employs either direct or indirect temperature measurement methods. Direct temperature measurement usually uses Pt100 sensors, which are made of metal and pose safety hazards. Indirect temperature measurement measures the surface temperature of the equipment through non-contact methods and cannot reflect the internal temperature. In harsh environments, such as high temperature, high humidity, and high dust levels, the sensitivity and accuracy of infrared thermometry deteriorate.

[0003] Critical electrical equipment in power distribution systems, such as transformers, reactors, and circuit breakers, primarily operate outdoors under maintenance-free conditions. The thermal balance between conductor heat effects and heat dissipation devices within these equipment can be disrupted by prolonged operation under high current, high voltage, and strong magnetic field interference. This can lead to localized heat accumulation, insulation damage, and ultimately, short-circuit faults, expanding the scope of the accident. The thermal balance of electrical equipment is a crucial criterion for its safe operation. Temperature monitoring devices play a vital role in measuring and detecting the internal temperature of critical electrical equipment, ensuring the safe and stable operation of the power distribution system.

[0004] Existing temperature sensing mechanisms are fixedly installed inside the air-core reactor, allowing only temperature monitoring at specific points. If the sensing mechanism at a particular point malfunctions, temperature measurement at that point becomes impossible. Some commercially available detachable temperature sensing mechanisms, due to size limitations, can only measure the temperature at the top and bottom of the air-core reactor. Furthermore, the temperatures at the top and bottom are lower than the internal temperature, meaning the measured temperatures cannot represent the overall temperature of the air-core reactor, thus compromising the accuracy of air-core reactor temperature measurements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an internally embedded temperature measuring mechanism for a hollow reactor, so as to solve the problems in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0007] An internal pre-embedded temperature measuring mechanism for a hollow reactor includes several temperature measuring devices mounted on star-shaped booms or pull rods between the reactor coils on the upper and lower sides of the reactor coils for collecting temperature information of the hollow reactor, and a signal transceiver mounted below the reactor coils for receiving the temperature information of the hollow reactor measured by the temperature measuring devices. The temperature measuring devices are electrically connected to the signal transceiver via optical fibers. The temperature measuring devices include mounting clamps mounted on the star-shaped booms or pull rods, and temperature sensors for measuring the internal temperature of the hollow reactor are mounted on the mounting clamps via telescopic rods. The output end of the temperature sensor is connected to the input end of the signal transceiver via optical fibers. The signal transceiver is provided with several optical fiber interfaces for connecting optical fibers, and a flexible steel strip for fixing the signal transceiver is provided at the bottom of the signal transceiver via a fixing block. The flexible steel strip is also provided with mounting holes, and bolts are inserted into the mounting holes.

[0008] To further optimize the technical solution, a U-shaped frame is provided between the mounting clamp and the bottom end of the telescopic rod, and the bottom end of the telescopic rod is set inside the U-shaped frame through a pivot.

[0009] To further optimize the technical solution, a U-shaped frame is provided at the top of the telescopic rod, and the temperature sensor is installed inside the U-shaped frame through a temperature sensor mounting block, which is then installed inside the U-shaped frame through a rotating shaft.

[0010] To further optimize the technical solution, the mounting clamp is set at the bottom of the U-shaped frame via a rotating shaft. The outer end of the mounting clamp is provided with an ear plate, and a bolt is passed through the ear plate. One of the mounting clamp ear plates has a U-shaped groove on its outer side for the bolt to pass through, and a nut is fitted on the bolt.

[0011] To further optimize the technical solution, limit blocks are provided at both ends of the bolt to prevent the bolt from being unscrewed from the lug and nut.

[0012] To further optimize the technical solution, a rubber pad for anti-slip is provided on the inner side of the mounting clamp.

[0013] To further optimize the technical solution, an indicator light is provided above the fiber optic interface on the signal transceiver to indicate whether the temperature sensor connected to the fiber optic interface is working properly.

[0014] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0015] This utility model provides an internally embedded temperature measuring mechanism for a hollow reactor. It is small in size and light in weight, and can be assembled on the star-shaped boom and pull rod of the reactor coil without modifying the reactor body structure. The installation process does not damage the equipment. When the temperature sensor fails, the faulty temperature sensor can be disassembled and replaced. Furthermore, the temperature sensor can change its position according to the actual detection location, which can accurately monitor the internal temperature of the hollow reactor and provide a strong guarantee for 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;

[0017] Figure 2 This is a schematic diagram of the temperature measuring device of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure for installing the clamp on the temperature measuring device of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the signal transceiver of this utility model.

[0020] The components include: 1. Reactor coil, 2. Star-shaped boom, 3. Temperature measuring device, 4. Pulling rod, 5. Mounting clamp, 6. U-shaped frame, 7. Rotating shaft, 8. Rubber pad, 9. Ear plate, 10. Bolt, 11. Telescopic rod, 12. Temperature sensor mounting block, 13. Temperature sensor, 14. Nut, 15. Limit block, 16. Signal transceiver, 17. Fiber optic interface, 18. Indicator light, 19. Fixing block, and 20. Flexible steel strip. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] An internally embedded temperature measuring mechanism for a hollow reactor, combined with Figures 1 to 4 As shown, the device includes a temperature measuring device 3 and a signal transceiver 16. Several temperature measuring devices 3 are set on the star-shaped booms 2 on the upper and lower sides of the reactor coil 1 or on the pull rods 4 between the reactor coils 1, respectively, to collect the temperature information inside the hollow reactor. The signal transceiver 16 is used to receive the temperature information of the hollow reactor measured by the temperature measuring devices. The temperature measuring devices are electrically connected to the signal transceiver through optical fibers.

[0023] The temperature measuring device 3 includes a mounting clamp 5, a telescopic rod 11, and a temperature sensor 13. The mounting clamp 5 is mounted on the star-shaped boom 2 or the pull rod 4. A U-shaped frame 6 is provided on the mounting clamp 5. The bottom end of the telescopic rod 11 is mounted on the U-shaped frame 6 through a rotating shaft 7. The telescopic rod can rotate along the rotating shaft within the U-shaped frame, and the position of the temperature sensor can be adjusted according to the actual measurement position.

[0024] A U-shaped frame 6 is provided at the end of the telescopic rod 11. A temperature sensor 13 is mounted inside the U-shaped frame via a temperature sensor mounting block 12. The temperature sensor mounting block 12 is mounted inside the U-shaped frame 6 via a rotating shaft 7. The opening directions of the U-shaped frames at the top and bottom of the telescopic rod are staggered, allowing the orientation of the temperature sensor to be adjusted according to the actual usage location, thereby enabling the measurement of the internal temperature of the hollow reactor. The output end of the temperature sensor is connected to the input end of a signal transceiver 16 via an optical fiber. During use, the extension length of the telescopic rod is adjusted according to the actual measurement location.

[0025] The temperature sensor is a platinum resistance thermometer (PT100) or a thermocouple sensor (K type), with a measurement range of -50℃ to 200℃ and an accuracy of ±0.5℃.

[0026] The mounting clamp 5 is mounted at the bottom of the U-shaped frame 6 via a pivot. The outer end of the mounting clamp 5 has an ear plate 9, through which a bolt 10 passes. One of the ear plates has a U-shaped groove on its outer side for the bolt 10 to pass through. A nut 14 is fitted onto the bolt 10. Limiting blocks 15 are provided at both ends of the bolt 10 to prevent it from unscrewing from the ear plate and nut. A rubber pad 8 is provided on the inner side of the mounting clamp 5 for anti-slip purposes.

[0027] The transceiver 16 is provided with several fiber optic interfaces 17 for connecting the fiber optic cable of the temperature sensor. A flexible steel strip 20 is provided at the bottom of the transceiver 16 via a fixing block 19. The flexible steel strip 20 has mounting holes and is used to fix the transceiver to the bottom of the reactor coil by bolts.

[0028] Each fiber optic interface 17 on the transceiver 16 is equipped with an indicator light 18 above it to indicate whether the temperature sensor connected to the fiber optic interface is working properly.

[0029] The transceiver has an internal radio frequency module, which is used to send the received sensor signals to external devices so that the external devices can perform real-time monitoring and control. The radio frequency module in this application is a mature product purchased from the market. Data communication can be achieved by connecting it according to the product instructions.

[0030] The temperature sensor is fixed to the pull rod on the star-shaped boom on both sides of the reactor coil via a temperature measuring device. The length and position of the temperature sensor are adjusted according to the actual measurement location. A signal transceiver is fixed below the reactor coil via a flexible steel strip. The temperature information inside the hollow reactor collected by the temperature sensor is transmitted to the signal transceiver. The signal transceiver sends the signal collected by the temperature sensor to the external monitoring equipment, thereby realizing the measurement of the temperature of the hollow reactor.

Claims

1. An internally embedded temperature measuring mechanism for a hollow reactor, characterized in that: The device includes several temperature measuring devices (3) set on the star-shaped booms (2) or pull rods (4) between the reactor coils (1) on the upper and lower sides of the reactor coil (1) for collecting temperature information of the hollow reactor, and a signal transceiver (16) set below the reactor coil for receiving the temperature information of the hollow reactor measured by the temperature measuring devices. The temperature measuring devices are electrically connected to the signal transceiver via optical fibers. The temperature measuring devices (3) include mounting clamps (5) set on the star-shaped booms (2) or pull rods (4). The mounting clamps (5) are equipped with a temperature sensor (13) for measuring the temperature inside the hollow reactor via a telescopic rod (11). The output end of the temperature sensor is connected to the input end of the signal transceiver via an optical fiber. The signal transceiver (16) is equipped with several optical fiber interfaces (17) for connecting optical fibers. The bottom of the signal transceiver is equipped with a flexible steel strip (20) for fixing the signal transceiver via a fixing block (19). The flexible steel strip is also equipped with mounting holes, and bolts are inserted into the mounting holes.

2. The internal embedded temperature measuring mechanism of the air-core reactor according to claim 1, characterized in that: A U-shaped frame (6) is provided between the mounting clamp (5) and the bottom end of the telescopic rod (11), and the bottom end of the telescopic rod (11) is set in the U-shaped frame (6) through a pivot (7).

3. The internal embedded temperature measuring mechanism of the air-core reactor according to claim 1, characterized in that: The top of the telescopic rod (11) is provided with a U-shaped frame (6), and the temperature sensor (13) is set in the U-shaped frame (6) through the temperature sensor mounting block (12). The temperature sensor mounting block (12) is set in the U-shaped frame (6) through the rotating shaft (7).

4. The internal embedded temperature measuring mechanism of the air-core reactor according to claim 1, characterized in that: The mounting clamp (5) is set at the bottom of the U-shaped frame (6) via a rotating shaft. The outer end of the mounting clamp (5) is provided with an ear plate (9), and a bolt (10) is passed through the ear plate. A U-shaped groove for the bolt (10) to pass through is opened on the outer side of one of the mounting clamp ear plates, and a nut (14) is fitted on the bolt (10).

5. The internal embedded temperature measuring mechanism of a hollow reactor according to claim 4, characterized in that: The bolt (10) is provided with limiting blocks (15) at both ends to prevent the bolt from being screwed out of the lug and nut.

6. The internal embedded temperature measuring mechanism of the air-core reactor according to claim 1, characterized in that: The inner side of the mounting clamp (5) is provided with a rubber pad (8) for anti-slip.

7. The internal embedded temperature measuring mechanism of a hollow reactor according to claim 1, characterized in that: An indicator light (18) is provided above the fiber optic interface (17) on the signal transceiver (16) to indicate whether the temperature sensor connected to the fiber optic interface is working properly.

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