CN205373907U - High tension switchgear temperature transducer - Google Patents
High tension switchgear temperature transducer Download PDFInfo
- Publication number
- CN205373907U CN205373907U CN201620092739.4U CN201620092739U CN205373907U CN 205373907 U CN205373907 U CN 205373907U CN 201620092739 U CN201620092739 U CN 201620092739U CN 205373907 U CN205373907 U CN 205373907U
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- Prior art keywords
- copper foil
- plate electrode
- foil plate
- insulating shell
- thermistor
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000011889 copper foil Substances 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 6
- 238000009529 body temperature measurement Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
本实用新型公开了一种高压开关柜测温传感器，它包括绝缘外壳、第一铜箔板电极、第二铜箔板电极、电能转换电路、无线发送电路、环氧树脂、天线、热敏电阻，所述的绝缘外壳内设有第一铜箔板电极和第二铜箔板电极，第一铜箔板电极和第二铜箔板电极之间填充相对介电常数较大的物质，第一铜箔板电极和第二铜箔板电极通过导线连接到电能转换电路，电能转换电路的输出与无线发送电路的电源端相接，绝缘外壳底部开有一个孔安装热敏电阻，热敏电阻通过导线连接到无线发送电路，无线发送电路与天线相连，绝缘外壳内填充环氧树脂。本实用新型具有无需电源供电、绝缘强度高、测量精度高的优点；并可将温度数据通过无线发射出去，传输距离远，性能稳定。
The utility model discloses a temperature measuring sensor for a high-voltage switch cabinet, which comprises an insulating shell, a first copper foil plate electrode, a second copper foil plate electrode, an electric energy conversion circuit, a wireless transmission circuit, epoxy resin, an antenna, and a thermistor , the first copper foil plate electrode and the second copper foil plate electrode are provided in the insulating shell, and a material with a relatively large relative permittivity is filled between the first copper foil plate electrode and the second copper foil plate electrode, and the first The copper foil plate electrode and the second copper foil plate electrode are connected to the power conversion circuit through wires, the output of the power conversion circuit is connected to the power supply end of the wireless transmission circuit, and a hole is opened at the bottom of the insulating shell to install the thermistor, and the thermistor passes through The wire is connected to the wireless sending circuit, the wireless sending circuit is connected with the antenna, and the insulating shell is filled with epoxy resin. The utility model has the advantages of no need for power supply, high insulation strength, and high measurement accuracy; the temperature data can be transmitted wirelessly, the transmission distance is long, and the performance is stable.
Description
技术领域 technical field
本实用新型涉及一种温度传感器，特别涉及一种高压开关柜测温传感器。 The utility model relates to a temperature sensor, in particular to a temperature measuring sensor for a high-voltage switch cabinet.
背景技术 Background technique
高压开关柜的电缆母线排搭接处、断路器触头接触部位、刀闸触头接触部位等在长期运行过程中，由于环境因素的变化造成接触点表面氧化腐蚀、螺丝松动等现象，导致导体接触电阻增大进而引起接触点发热，温度升高将进一步加剧接触面的老化，接触电阻增加，发热进一步加剧，如不能及时处理，会出现烧融连接部件引发短路事故，造成重大经济损失。 During the long-term operation of the lap joints of the cable busbars of the high-voltage switchgear, the contact parts of the circuit breaker contacts, and the contact parts of the knife gate, due to changes in environmental factors, the surface of the contact points is oxidized and corroded, and the screws are loose, which leads to conductors The increase of contact resistance will cause the contact point to heat up, and the temperature rise will further aggravate the aging of the contact surface, the contact resistance will increase, and the heat will be further aggravated. If it cannot be handled in time, there will be a short circuit accident caused by burning the connecting parts, causing major economic losses.
现有的技术通常是对高压开关柜中带电母线进行温度监测，常用的测温传感器有热电偶、热电阻、红外测温、表面声波测温等。常规的热电偶、热电阻、半导体温度传感器等测温方式的缺点在于无法无线无源，需要金属导线传输信号和供电，绝缘性能不能保证，即使采用电池供电，续航能力不足，需要经常更换。红外测温是非接触式测量，安装位置难易固定，需要直视测量点，中间不能有障碍物，开关柜经常有开断动作会造成红外传感器位置偏移。同时红外测温探头价格昂贵，不符合经济实用性原响监测精度。表面声波测温是利用温度对声波速度的影响来测量的，虽然无需供电，但接收天线必须和测温点的终端无障碍，安装麻烦，测量精度很低，工作效果也不太稳定。 The existing technology is usually to monitor the temperature of the live busbar in the high-voltage switchgear. The commonly used temperature measurement sensors include thermocouples, thermal resistors, infrared temperature measurement, surface acoustic wave temperature measurement, etc. The disadvantage of conventional thermocouples, thermal resistors, semiconductor temperature sensors and other temperature measurement methods is that they cannot be wireless and passive, and metal wires are required to transmit signals and power supply. The insulation performance cannot be guaranteed. Even if battery power is used, the battery life is insufficient and needs to be replaced frequently. Infrared temperature measurement is a non-contact measurement, the installation position is difficult to fix, and it is necessary to look directly at the measurement point, and there must be no obstacles in the middle. Frequent switching actions of the switchgear will cause the position of the infrared sensor to shift. At the same time, the infrared temperature measuring probe is expensive, which does not meet the economical and practical original sound monitoring accuracy. Surface acoustic wave temperature measurement is based on the influence of temperature on the speed of sound waves. Although no power supply is required, the receiving antenna must be unobstructed from the terminal of the temperature measurement point. The installation is troublesome, the measurement accuracy is very low, and the working effect is not stable.
发明内容 Contents of the invention
为了解决上述技术问题，本实用新型提供一种无需电源供电、绝缘强度高、测量精度高、性能稳定的高压开关柜测温传感器。 In order to solve the above-mentioned technical problems, the utility model provides a high-voltage switch cabinet temperature-measuring sensor that does not require power supply, has high insulation strength, high measurement accuracy, and stable performance.
本实用新型解决上述问题的技术方案是：一种高压开关柜测温传感器，包括绝缘外壳、第一铜箔板电极、第二铜箔板电极、相对介电常数较大的物质、电能转换电路、无线发送电路、环氧树脂、天线、热敏电阻，所述的绝缘外壳内设有第一铜箔板电极和第二铜箔板电极，第一铜箔板电极和第二铜箔板电极之间填充相对介电常数较大的物质，第一铜箔板电极和第二铜箔板电极通过导线连接到电能转换电路，电能转换电路的输出与无线发送电路的电源端相接，绝缘外壳底部开有一个孔安装热敏电阻，热敏电阻通过导线连接到无线发送电路，无线发送电路与天线相连，绝缘外壳内填充环氧树脂。 The technical solution of the utility model to solve the above problems is: a high-voltage switch cabinet temperature measuring sensor, including an insulating shell, a first copper foil plate electrode, a second copper foil plate electrode, a material with a relatively large relative permittivity, and an electric energy conversion circuit , wireless transmission circuit, epoxy resin, antenna, thermistor, the first copper foil plate electrode and the second copper foil plate electrode are arranged in the described insulating shell, the first copper foil plate electrode and the second copper foil plate electrode The material with a relatively large relative dielectric constant is filled between them, the first copper foil plate electrode and the second copper foil plate electrode are connected to the electric energy conversion circuit through wires, the output of the electric energy conversion circuit is connected to the power supply end of the wireless transmission circuit, and the insulating shell There is a hole at the bottom to install the thermistor, the thermistor is connected to the wireless transmission circuit through wires, the wireless transmission circuit is connected to the antenna, and the insulating shell is filled with epoxy resin.
本实用新型的有益效果在于： The beneficial effects of the utility model are:
1.本实用新型无需电池供电，具有环保、续航能力长的优点；同时避免了CT取电方式在弱电流情况下失效的故障，在高压开关柜运行状态下的任何情况下都能获得电能； 1. The utility model does not require battery power supply, and has the advantages of environmental protection and long battery life; at the same time, it avoids the failure of the CT power-taking method under weak current conditions, and can obtain electric energy under any circumstances under the operating state of the high-voltage switchgear;
2.本实用新型外壳可采用聚四氟乙烯全包裹保护，绝缘性能强，安装便捷，无需调整位置和角度； 2. The shell of the utility model can be fully wrapped and protected by polytetrafluoroethylene, which has strong insulation performance, convenient installation, and no need to adjust the position and angle;
3.本实用新型温度测量是采用直接接触的方式，测量精度高，测量结果受环境因素影响非常小； 3. The temperature measurement of the utility model adopts the direct contact method, the measurement accuracy is high, and the measurement result is very little affected by environmental factors;
4.本实用新型将温度数据通过无线发射出去，传输距离远，性能稳定。 4. The utility model transmits temperature data wirelessly, with long transmission distance and stable performance.
附图说明 Description of drawings
图1本实用新型的结构示意图。 Fig. 1 is the structural representation of the utility model.
具体实施方式 detailed description
下面结合附图对本实用新型作进一步的详细说明。 Below in conjunction with accompanying drawing, the utility model is described in further detail.
如图1所示，本实用新型包括绝缘外壳4、铜箔板电极1、相对介电常数较大的物质2、铜箔板电极3、电能转换电路5、无线发送电路7、环氧树脂6、天线8、热敏电阻9。本实用新型通过安装孔10安装在高压母线11上。测温传感器外壳采用聚四氟乙烯外壳4进行包裹保护，使传感器内部元器件与高压母线之间具有足够的绝缘强度。由于高压母线周围存在一个高压电场，在这个高压电场中放置两个铜箔板电极1和3，在高压静电场作用下两个铜箔板电极1和3之间产生一个交变的电势差，在两个铜箔板电极1和3之间填充相对介电常数较大的物质2以获得更大的电势差。两个铜箔板电极1和3通过导线连接到电能转换电路上，将两个铜箔板电极1和3之间交流的小能量，通过全波整流桥，将交流电能转化成直流电能，并储存在储能电容中，但储能电容中的电能达到一定量时就开始给后面无线发送电路7供电。在聚四氟乙烯外壳4底部开一个孔安装热敏电阻9，使其与高压母线11直接接触。热敏电阻9通过导线连接到无线发送电路7上，无线发送电路7将测得的温度值通过天线8发送出去。在传感器腔体中6填充环氧树脂进行绝缘保护，防止元器件被高压母线11击穿。 As shown in Figure 1, the utility model includes an insulating shell 4, a copper foil plate electrode 1, a material 2 with a relatively large relative permittivity, a copper foil plate electrode 3, a power conversion circuit 5, a wireless transmission circuit 7, and an epoxy resin 6 , antenna 8, thermistor 9. The utility model is installed on the high-voltage bus 11 through the installation hole 10 . The shell of the temperature measuring sensor is wrapped and protected by a polytetrafluoroethylene shell 4, so that there is sufficient insulation strength between the internal components of the sensor and the high-voltage bus. Since there is a high-voltage electric field around the high-voltage busbar, two copper foil plate electrodes 1 and 3 are placed in this high-voltage electric field, and an alternating potential difference is generated between the two copper foil plate electrodes 1 and 3 under the action of the high-voltage electrostatic field. A substance 2 with a relatively large relative permittivity is filled between the two copper foil plate electrodes 1 and 3 to obtain a larger potential difference. The two copper foil plate electrodes 1 and 3 are connected to the electric energy conversion circuit through wires, and the small energy exchanged between the two copper foil plate electrodes 1 and 3 is converted into DC electric energy through a full-wave rectifier bridge, and It is stored in the energy storage capacitor, but when the electric energy in the energy storage capacitor reaches a certain amount, it starts to supply power to the wireless transmission circuit 7 behind. A hole is opened at the bottom of the polytetrafluoroethylene shell 4 to install the thermistor 9 so that it is in direct contact with the high-voltage bus 11 . The thermistor 9 is connected to the wireless sending circuit 7 through wires, and the wireless sending circuit 7 sends the measured temperature value through the antenna 8 . The sensor cavity 6 is filled with epoxy resin for insulation protection, preventing components from being broken down by the high-voltage bus bar 11 .
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620092739.4U CN205373907U (en) | 2016-01-31 | 2016-01-31 | High tension switchgear temperature transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620092739.4U CN205373907U (en) | 2016-01-31 | 2016-01-31 | High tension switchgear temperature transducer |
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| Publication Number | Publication Date |
|---|---|
| CN205373907U true CN205373907U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620092739.4U Expired - Fee Related CN205373907U (en) | 2016-01-31 | 2016-01-31 | High tension switchgear temperature transducer |
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| Country | Link |
|---|---|
| CN (1) | CN205373907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120118A1 (en) * | 2019-12-19 | 2021-06-24 | Abb Schweiz Ag | Apparatus for measuring temperature of switchgear, assembling method thereof and switchgear |
-
2016
- 2016-01-31 CN CN201620092739.4U patent/CN205373907U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120118A1 (en) * | 2019-12-19 | 2021-06-24 | Abb Schweiz Ag | Apparatus for measuring temperature of switchgear, assembling method thereof and switchgear |
| CN114556063A (en) * | 2019-12-19 | 2022-05-27 | Abb瑞士股份有限公司 | Device for measuring temperature of switchgear, method of assembling the same, and switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20170131 |
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| CF01 | Termination of patent right due to non-payment of annual fee |