Special plug pin device with position detection and temperature detection functions for plug box

Abstract

A special pin device for a jack box with position detection and temperature detection functions comprises an alarm used for sending out an alarm signal, an outer ring inductor of the alarm is in contact with an outer ring trigger, and an inner ring inductor of the alarm is in contact with an inner ring trigger; the inner ring trigger is mounted in the inner cavity of the device, and the tail end of the inner ring trigger penetrates through the sealing plate, is in contact with an inner ring sensor of the alarm and is used for transmitting a displacement change signal of the position push rod; the outer ring trigger is mounted in the inner cavity of the device and is in contact with the heat-sensitive material, and when the heat-sensitive material is subjected to displacement change, the outer ring trigger moves along with the heat-sensitive material and is in contact with an outer ring inductor of the alarm to trigger an alarm signal; and the heat-sensitive material is in close-range indirect contact with the shunt conductor and is affected by the temperature and the heat of the shunt conductor to cause up-down thermal expansion and cold contraction, the temperature threshold value of the shunt conductor is detected through the displacement change, and the displacement change of the heat-sensitive material pushes the outer ring trigger to move.

Description

Technical Field

[0001] The invention relates to a pin device, in particular to a special pin device for a plug-in box with position detection and temperature detection functions. Background Art

[0002] For many years, the main function of the plug-in box is to distribute, control and protect electricity, ensure the stable operation of the power system, and also realize the protection and control of electrical equipment. The plug-in box is easy to use, simple to install, and highly safe, and can meet the power needs of different occasions and different equipment. The core component of the plug-in box is the pin, and its contact quality directly affects the operation quality of the entire power distribution system. In order to ensure the stability and high reliability of its performance, and to effectively prevent the occurrence of temperature rise failures caused by poor contact or insufficient contact area, its structural form has also been diversified. The disclosure of many patented technologies has promoted the continuous improvement and improvement of the plug-in technology level of the plug-in box. For the switch field, no matter what type of structure of the busbar plug-in box pin, it is intended to improve and improve the contact pressure and contact area of ​​the pin, and improve the contact quality of the pin. The published Chinese patents include CN117013286A, CN202221815401.9, CN201710459940.0, CN201611112819.2, CN202797361U, CN201020673109.9, CN200820116214.5, etc.

[0003] These patents have technically solved most of the temperature rise problems caused by poor contact pressure and contact area, but there are also certain defects and imperfections, which pose certain operational safety risks. First, insertion under abnormal conditions will lead to insufficient contact area and insufficient pressure of the plug, which cannot be predicted or perceived by operators, maintenance personnel; second, during long-term use, the temperature rise caused by loosening or position changes of the plug due to vibration, temperature rise, etc. cannot be fed back to operators, maintenance personnel, which will inevitably cause temperature accumulation, thereby causing over-temperature or high-temperature failures, resulting in greater losses. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a special plug device for a plug-in box with position detection and temperature detection functions, which effectively solves the problems mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: The present invention comprises an alarm: used to send out an alarm signal, wherein the outer ring sensor contacts the outer ring trigger, and the inner ring sensor contacts the inner ring trigger; Inner ring trigger: installed in the inner cavity of the device, with the tail end passing through the sealing plate and contacting the inner ring sensor of the alarm to transmit the displacement change signal of the position push rod; Outer ring trigger: installed in the inner cavity of the device and in contact with the heat-sensitive material. When the heat-sensitive material changes its displacement, the outer ring trigger moves accordingly and contacts the outer ring sensor of the alarm, triggering the alarm signal; Thermosensitive material: In indirect contact with the shunt conductor at a close distance, it expands and contracts due to the influence of its temperature. The temperature threshold of the shunt conductor is detected by the change of displacement, and the change of displacement drives the outer ring trigger to move; Isolation tube: completely isolates the heat-sensitive material, outer ring trigger from the inner ring trigger, buffer spring, and position push rod to ensure that each component does not affect each other; Position push rod: directly in contact with the bus conductor, its displacement change is transmitted to the inner ring trigger through the buffer spring, which is used to detect the contact depth between the shunt conductor and the bus conductor; Shunt conductor: used to transmit current and transfer heat to heat-sensitive materials; Sealing plate: fixed at the bottom of the device, the tail end of the inner ring trigger passes through the sealing plate and contacts the inner ring sensor of the alarm; Base: supports the entire device; Buffer spring: one end contacts the inner ring trigger, and the other end contacts the position push rod, used to transmit the displacement change of the position push rod and buffer the impact of the inner ring trigger on the inner ring sensor of the alarm; Clamp: used to clamp the shunt conductor and the bus conductor and maintain a certain elastic pressure.

[0006] Preferably, the inner ring trigger is made of elastic material and can move flexibly under the action of a buffer spring to ensure reliable contact with the inner ring sensor.

[0007] Preferably, the thermosensitive material is a metal material with a large thermal expansion coefficient, which can produce obvious displacement changes when the temperature of the shunt conductor changes.

[0008] Preferably, the isolation tube is made of non-metallic material, which can effectively isolate the heat-sensitive material, the outer ring trigger and the inner ring trigger, the buffer spring, and the position push rod to prevent mutual interference.

[0009] Preferably, the position push rod is made of insulating material, can form good position contact and insulation with the bus conductor, and accurately detect the contact depth between the shunt conductor and the bus conductor.

[0010] Preferably, the alarm is an audible and visual alarm, which can emit an audible and visual alarm to alert the operator after receiving a signal from the inner ring sensor or the outer ring sensor.

[0011] Preferably, the clamping member is an elastic clamping structure, which is used to clamp the shunt conductor and the bus conductor and maintain a certain elastic pressure to ensure stable operation of the device.

[0012] Preferably, a mounting hole is provided on the base.

[0013] Preferably, the sealing plate is made of a metal plate having good mechanical strength and capable of protecting components inside the device.

[0014] Preferably, the elastic coefficient of the buffer spring is designed according to the displacement variation range of the position push rod to ensure that the displacement signal can be accurately transmitted and the impact can be buffered.

[0015] Beneficial effects: Real-time monitoring and early warning: Through real-time detection of the contact depth between the shunt conductor and the bus conductor and the operating temperature of the shunt conductor, potential fault hazards can be discovered in time, and a signal alarm can be sent out through the alarm to remind the operator to take corresponding measures, effectively avoiding power system failures caused by poor contact or excessive temperature, and improving the safety and reliability of the power system.

[0016] High-precision detection: The device uses thermosensitive materials and position push rods and other components, which can accurately detect the temperature changes and contact depth changes of the shunt conductor, ensuring the accuracy and reliability of the detection results, and providing a strong guarantee for the stable operation of the power system.

[0017] Simple and reasonable structure: The device has fewer components and a simple and reasonable structural design, which is easy to manufacture, install and maintain, reducing production costs and maintenance difficulties, while improving the stability and service life of the device.

[0018] Highly integrated: The position detection and temperature detection functions are integrated into one device, achieving multi-functional integration, reducing the size and floor space of the equipment, improving the integration and space utilization of the equipment, and facilitating installation and use in the power system.

[0019] Good protection performance: The heat-sensitive material, outer ring trigger and inner ring trigger, buffer spring, position push rod and other components are effectively isolated by the isolation tube, avoiding mutual interference between the components and ensuring the accuracy and reliability of detection. At the same time, the isolation tube can also prevent the high temperature of the shunt conductor from damaging other components, thus improving the protection performance and service life of the device.

[0020] Easy to maintain and overhaul: The device has a simple structure and few parts, which is easy to maintain and overhaul. When the device needs to be maintained or overhauled, the relevant parts can be easily disassembled and replaced, which reduces maintenance time and cost and improves the availability and operation efficiency of the equipment.

[0021] Wide scope of application: The device is suitable for plug-in boxes in various power systems, can meet the power needs of different occasions and different equipment, has wide applicability and promotion value, and provides effective technical support for the safe operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the installation structure used in the present invention; Numbers in the figure: 1. Alarm; 2. Outer ring sensor; 3. Inner ring sensor; 4. Inner ring trigger; 5. Outer ring trigger; 6. Thermosensitive material; 7. Isolation tube; 8. Position push rod; 9. Shunt conductor; 10. Sealing plate; 11. Base; 12. Buffer spring; 13. Holding clamp. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-2 The specific implementation modes of the present invention are described in further detail.

[0024] Embodiment 1, by Figure 1-2 The present invention provides a special plug device for a plug box with position detection and temperature detection functions, an alarm 1 Function: As the core alarm component of the entire device, it is used to send out alarm signals to remind operators to deal with abnormal situations in the electrical system in a timely manner.

[0025] Its outer ring sensor 2 cooperates with the outer ring trigger 5, and the inner ring sensor 3 cooperates with the inner ring trigger 4; when the outer ring trigger 5 or the inner ring trigger 4 contacts with the corresponding sensor, the alarm 1 receives the signal and sends out an alarm signal.

[0026] Inner ring trigger 4 Function: Installed in the inner cavity of the device, it is mainly responsible for transmitting the displacement change signal of the position push rod 8. The characteristics of its elastic material ensure that it can move flexibly under the action of the buffer spring 12, so as to reliably contact with the inner ring sensor 3 and realize accurate signal transmission.

[0027] The tail end passes through the sealing plate 10 and contacts the inner ring sensor 3 of the alarm 1 , and one end contacts the buffer spring 12 to receive the displacement signal transmitted from the position push rod 8 through the buffer spring 12 .

[0028] Outer ring trigger 5 Function: It is also installed in the inner cavity of the device and is in close contact with the heat-sensitive material 6. When the heat-sensitive material 6 moves due to temperature changes, the outer ring trigger 5 moves accordingly, triggering the outer ring sensor 2 of the alarm 1, and then triggering the alarm signal.

[0029] It is directly connected to the heat-sensitive material 6 and forms a triggering relationship with the outer ring sensor 2 of the alarm 1.

[0030] Heat sensitive materials 6 Function: As a key component for temperature detection, it is in close indirect contact with the shunt conductor 9. It uses its own characteristics of thermal expansion and contraction to detect the temperature threshold of the shunt conductor 9 through the change in displacement. When the temperature is abnormal, its displacement change pushes the outer ring trigger 5 to move.

[0031] There is a heat transfer relationship with the shunt conductor 9 and a mechanical transmission relationship with the outer ring trigger 5.

[0032] Isolation tube 7 Function: Made of non-metallic materials, it completely isolates the heat-sensitive material 6, the outer ring trigger 5 from the inner ring trigger 4, the buffer spring 12, and the position push rod 8 to prevent mutual interference between the components and ensure that the temperature monitoring and contact depth monitoring systems operate independently and accurately.

[0033] It plays a role of physical isolation inside the device to ensure the stability of each monitoring system.

[0034] Position push rod 8 Function: Made of insulating material, it is in direct contact with the bus conductor 14. Its displacement change can accurately reflect the contact depth between the shunt conductor 9 and the bus conductor 14, and transmit the displacement signal to the inner ring trigger 4 through the buffer spring 12.

[0035] It is in direct contact with the bus conductor 14 , connected with the buffer spring 12 , and establishes a signal transmission relationship with the inner ring trigger 4 through the buffer spring 12 .

[0036] Shunt conductor 9 Function: The main function is to transmit current and transfer the heat generated by the current to the thermosensitive material 6. It is the heat source for temperature monitoring.

[0037] There is heat transfer connection with the thermosensitive material 6, which is the starting point of the entire temperature monitoring link.

[0038] Sealing plate 10 Function: Fixed at the bottom of the device, on the one hand, it provides support and guidance for the inner ring trigger 4, so that its tail end can accurately pass through and contact the inner ring sensor 3; on the other hand, the use of a metal plate with good mechanical strength can protect the internal components of the device.

[0039] It is closely connected with the inner ring trigger 4 and the overall structure of the device, playing the role of fixing and protecting.

[0040] Base 11 Function: Support the entire device and provide a stable installation base for the device. The base 11 is provided with mounting holes to facilitate fixing the device in a suitable position.

[0041] It forms a whole with other parts of the device and is the basic support for the stable operation of the device.

[0042] Buffer spring 12 Function: One end contacts the inner ring trigger 4, and the other end contacts the position push rod 8. Its elastic coefficient is designed according to the displacement change range of the position push rod 8, which can not only accurately transmit the displacement change signal of the position push rod 8, but also buffer the impact of the inner ring trigger 4 on the inner ring sensor 3 of the alarm 1, protecting the sensor from damage.

[0043] It plays a dual role of signal transmission and buffer protection between the position push rod 8 and the inner ring trigger 4.

[0044] Holding clamp 13 Function: The elastic clamping structure is used to clamp the shunt conductor and the bus conductor and maintain a certain elastic pressure to ensure that the device will not shift due to vibration or other external factors during operation, thereby ensuring the stable operation of the device.

[0045] 1. Working principle of position detection Initial state: When the shunt conductor 9 of the junction box is not in contact with the bus conductor 14, the position push rod 8 is in the initial position. At this time, the inner circle trigger 4 maintains a certain distance from the inner circle sensor 3 of the alarm 1. The position abnormality alarm signal of the alarm 1 is not released, and an alarm signal will be issued to remind the operator that the insertion position of the shunt conductor 9 is abnormal.

[0046] Insertion process: When the shunt conductor 9 begins to be inserted into the bus conductor 14, the position push rod 8 will move accordingly. Since the position push rod 8 is in contact with the buffer spring 12, the buffer spring 12 will transmit the displacement change of the position push rod 8 to the inner ring trigger 4.

[0047] Triggering alarm: As the insertion depth of the shunt conductor 9 increases, the displacement change of the position push rod 8 gradually increases. When it reaches a certain threshold, the inner ring trigger 4 will contact the inner ring sensor 3 of the alarm 1, and the abnormal position alarm signal of the alarm 1 will be released.

[0048] 2. Working Principle of Temperature Detection Heat transfer: During normal operation of the plug box, the shunt conductor 9 generates heat due to the passage of current. Since the heat-sensitive material 6 is in close indirect contact with the shunt conductor 9, the heat generated by the shunt conductor 9 is transferred to the heat-sensitive material 6.

[0049] Thermal expansion and contraction: When the thermosensitive material 6 is heated, thermal expansion and contraction will occur, that is, the thermosensitive material 6 will expand when the temperature rises, and will contract when the temperature drops. The displacement change of the thermosensitive material 6 changes with the temperature change of the shunt conductor 9.

[0050] Triggering alarm: When the temperature of the shunt conductor 9 exceeds a certain threshold, the displacement change of the thermosensitive material 6 will reach a certain condition, pushing the outer ring trigger 5 to move upward and contact with the outer ring sensor 2 of the alarm 1, triggering the alarm 1 to send out an abnormal temperature alarm signal, reminding the operator that the operating temperature of the shunt conductor 9 is abnormal.

[0051] 3. Isolation and Protection The isolation tube 7 plays a key role in the isolation of the entire device, completely isolating the heat-sensitive material 6, the outer ring trigger 5 from the inner ring trigger 4, the buffer spring 12, and the position push rod 8, ensuring that the position detection and temperature detection systems do not interfere with each other and ensuring the accuracy of the detection results. At the same time, the isolation tube 7 can also prevent the high temperature of the shunt conductor 9 from damaging other components, playing a certain protective role.

[0052] In summary, the device realizes real-time detection of the contact depth between the shunt conductor 9 and the bus conductor 14 and the operating temperature of the shunt conductor 9 through the displacement changes of the position push rod 8 and the thermosensitive material 6, and sends a corresponding alarm signal through the alarm 1 to remind the operator to take timely measures to ensure the safe operation of the plug-in box.

[0053] Beneficial effects: Real-time monitoring and early warning: Through real-time detection of the contact depth between the shunt conductor and the bus conductor and the operating temperature of the shunt conductor, potential fault hazards can be discovered in time, and an alarm signal can be sent out through the alarm to remind the operator to take corresponding measures, effectively avoiding power system failures caused by poor contact or excessive temperature, and improving the safety and reliability of the power system.

[0054] High-precision detection: The device uses thermosensitive materials and position push rods and other components, which can accurately detect the temperature changes and contact depth changes of the shunt conductor, ensuring the accuracy and reliability of the detection results, and providing a strong guarantee for the stable operation of the power system.

[0055] Simple and reasonable structure: The device has fewer components and a simple and reasonable structural design, which is easy to manufacture, install and maintain, reducing production costs and maintenance difficulties, while improving the stability and service life of the device.

[0056] Highly integrated: The position detection and temperature detection functions are integrated into one device, achieving multi-functional integration, reducing the size and floor space of the equipment, improving the integration and space utilization of the equipment, and facilitating installation and use in the power system.

[0057] Good protection performance: The heat-sensitive material, outer ring trigger and inner ring trigger, buffer spring, position push rod and other components are effectively isolated by the isolation tube, avoiding mutual interference between the components and ensuring the accuracy and reliability of detection. At the same time, the isolation tube can also prevent the high temperature of the shunt conductor from damaging other components, thus improving the protection performance and service life of the device.

[0058] Easy to maintain and overhaul: The device has a simple structure and few parts, which is easy to maintain and overhaul. When the device needs to be maintained or overhauled, the relevant parts can be easily disassembled and replaced, which reduces maintenance time and cost and improves the availability and operation efficiency of the equipment.

[0059] Wide scope of application: The device is suitable for plug-in boxes in various power systems, can meet the power needs of different occasions and different equipment, has wide applicability and promotion value, and provides effective technical support for the safe operation of the power system.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A special plug device for a plug box with position detection and temperature detection functions, characterized in that: Alarm (1): used to send out an alarm signal, wherein the outer ring sensor (2) contacts the outer ring trigger (5), and the inner ring sensor (3) contacts the inner ring trigger (4); the inner ring trigger (4): installed in the inner cavity of the device, with the tail end passing through the sealing plate (10) and contacting the inner ring sensor (3) of the alarm (1); the outer ring trigger (5): installed in the inner cavity of the device and contacting the thermosensitive material (6). When the thermosensitive material (6) undergoes displacement changes, the outer ring trigger (5) moves accordingly and contacts the outer ring sensor (2) of the alarm (1), triggering the alarm signal; the thermosensitive material (6): in close and indirect contact with the shunt conductor (9), and expands and contracts upwards and downwards under the influence of its temperature and heat. The temperature threshold of the shunt conductor (9) is detected by the change in displacement, and its displacement change drives the outer ring trigger (5) to move; the isolation tube (7): connects the thermosensitive material (6), the outer ring trigger (5), the inner ring trigger (4), and the buffer spring (12), the position push rod (8) is completely isolated; the position push rod (8): directly contacts the bus conductor (14), and its displacement change is transmitted to the inner ring trigger (4) through the buffer spring (12), which is used to detect the contact depth between the shunt conductor (9) and the bus conductor (14); the shunt conductor (9): is used to transmit current and transfer heat to the heat-sensitive material (6); the sealing plate (10): is fixed at the bottom of the device, and the tail end of the inner ring trigger (4) passes through the sealing plate (10) and contacts the inner ring sensor (3) of the alarm (1); the base (11): supports the entire device; the buffer spring (12): one end contacts the inner ring trigger (4), and the other end contacts the position push rod (8), which is used to transmit the displacement change of the position push rod (8) and buffer the impact of the inner ring trigger (4) on the inner ring sensor (3) of the alarm (1); the clamping clamp (13): is used to clamp the shunt conductor and the bus conductor and maintain a certain elastic pressure.

2. A special plug pin device for a plug box with position detection and temperature detection functions according to claim 1, characterized in that: The inner ring trigger (4) is made of elastic material and can move flexibly under the action of the buffer spring (12), thereby ensuring reliable contact with the inner ring sensor (3).

3. A special plug pin device for a plug box with position detection and temperature detection functions according to claim 1, characterized in that: The thermosensitive material (6) is a metal material with a large thermal expansion coefficient, and can produce a significant displacement change when the temperature of the shunt conductor (9) changes.

4. The plug-in box dedicated pin device with position detection and temperature detection functions according to claim 1, characterized in that: The isolation tube (7) is made of insulating material and can effectively isolate the heat-sensitive material (6), the outer ring trigger (5) and the inner ring trigger (4), the buffer spring (12), and the position push rod (8) to prevent mutual interference.

5. The special plug pin device for a plug box with position detection and temperature detection functions according to claim 1, characterized in that: The position push rod (8) is made of insulating material and can form good position contact with the bus conductor (14), and accurately detect the contact depth between the shunt conductor (9) and the bus conductor (14).

6. The special plug pin device for a plug box with position detection and temperature detection functions according to claim 1, characterized in that: The alarm (1) is a signal alarm, which can send out a signal alarm to alert the operator after receiving a signal from the inner ring sensor (3) or the outer ring sensor (2).

7. The special plug pin device for a plug box with position detection and temperature detection functions according to claim 1, characterized in that: The clamping clamp (13) is an elastic clamping structure, which can ensure the clamping degree of the shunt conductor (9) and the bus conductor (14), thereby ensuring the stable operation of the device.

8. The special plug pin device for a plug box with position detection and temperature detection functions according to claim 1, characterized in that: The base (11) is provided with a mounting hole.

9. The plug-in box dedicated pin device with position detection and temperature detection functions according to claim 1, characterized in that: The sealing plate (10) is a metal plate having good mechanical strength and capable of protecting components inside the device.

10. The special plug pin device for a plug box with position detection and temperature detection functions according to claim 1, characterized in that: The elastic coefficient of the buffer spring (12) is designed according to the displacement variation range of the position push rod (8), ensuring that the displacement signal can be accurately transmitted and the impact can be buffered.

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