CN203705056U - Self-induction type high-voltage contact wireless temperature measuring device - Google Patents

Abstract

The utility model relates to a self-inductive high-voltage contact wireless temperature measuring device, which is characterized in that it includes a temperature measuring probe and a display terminal; the temperature measuring probe includes a temperature sensor, a wireless transmitting module and a current transformer The temperature sensor collects temperature information and transmits it to the display terminal through the wireless transmission module, and the current transformer is arranged on the high-voltage contact to facilitate the use of electromagnetic induction to generate current for the temperature sensor and the wireless transmission module. The display terminal includes a wireless receiving module and a display screen; the wireless receiving module receives the temperature signal sent by the temperature measuring probe and transmits it to the display screen for display. The utility model adopts the current transformer induction to supply power, can be used for a long time, has no life limit; and the signal is stable, and the problem of signal instability when the voltage is too low will not occur.

Description

Self-induction high voltage contact wireless temperature measuring device

technical field

The utility model relates to the field of switch cabinets, in particular to a self-inductive high-voltage contact wireless temperature measuring device.

Background technique

In the power system, such as power plants, high-voltage switch cabinets in substations, busbar joints, outdoor knife switches and other important equipment. During the long-term operation, the surface of the equipment will be oxidized and corroded, the fastening bolts will be loose, and the contacts, lap joints, busbars, motors, transformers, cable trays, and closed busbar connections in the cabinet will be aging due to aging or excessive contact resistance. The heat will eventually lead to accidents, fires and large-scale power outages. Solving the problem of switch overheating is the key to preventing such accidents. Realizing online temperature monitoring is an important means to ensure the safe operation of high-voltage equipment.

However, there are still many problems in the existing high-voltage contact temperature measurement scheme. For example, the temperature measurement scheme using wired transmission method is easily disturbed by the surrounding high-voltage and strong electromagnetic field due to the existence of many contact points, and the system is extremely unstable. The temperature measurement solution using wireless transmission is powered by batteries, which has low battery life, resulting in frequent replacement of temperature measurement devices, and because it is used on the main circuit of switchgear below 35KV, it is inconvenient to replace under high voltage.

Utility model content

In view of this, the purpose of the utility model is to provide a self-inductive high-voltage contact wireless temperature measuring device.

The utility model is realized by the following scheme: a self-inductive high-voltage contact wireless temperature measuring device, which is characterized in that it includes a temperature measuring probe and a display terminal;

The temperature measuring probe includes a temperature sensor, a wireless transmitting module and a current transformer; the temperature sensor collects temperature information and transmits it to the display terminal through the wireless transmitting module, and the current transformer is arranged on the high-voltage contactor on the head to facilitate the use of electromagnetic induction to generate current to supply power to the temperature sensor and the wireless transmitting module;

The display terminal includes a wireless receiving module and a display screen; the wireless receiving module receives the temperature signal sent by the temperature measuring probe and transmits it to the display screen for display.

In an embodiment of the utility model, the temperature measuring probe further includes an overvoltage protection module and an overcurrent protection module.

In an embodiment of the present utility model, the temperature measuring probe is cast in an annular casing, and a heat conducting member is arranged on the inner diameter of the annular casing.

In an embodiment of the present invention, a spring buckle is provided on the inner diameter of the annular shell, which is convenient for installation and disassembly.

In an embodiment of the present invention, the display terminal is further connected with a fan and a heater to realize cooling and dehumidification functions.

The power supply of the temperature measuring probe of the utility model is powered by current transformer (current transformer; CT) induction, and has the following advantages:

1. No pollution; 2. Because the pouring is basically not affected by the external environment; 3. It can be used for a long time without life limit; 4. The signal is stable, and there will be no problems such as signal instability when the voltage is too low.

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail through specific embodiments and related drawings below.

Description of drawings

Fig. 1 is a system frame diagram of the temperature measuring device of the present invention.

Fig. 2 is a structural schematic diagram of the temperature measuring probe of the present invention.

Detailed ways

As shown in Figure 1, the utility model provides a self-inductive high-voltage contact wireless temperature measuring device, including a temperature measuring probe and a display terminal;

The temperature measuring probe includes a temperature sensor, a wireless transmitting module and a current transformer; the temperature sensor collects temperature information and transmits it to the display terminal through the wireless transmitting module, and the current transformer is arranged on the high-voltage contactor on the head to facilitate the use of electromagnetic induction to generate current to supply power to the temperature sensor and the wireless transmitting module;

The display terminal includes a wireless receiving module and a display screen; the wireless receiving module receives the temperature signal sent by the temperature measuring probe and transmits it to the display screen for display. The display terminal also includes a plurality of wiring ports for simultaneously receiving more temperature data transmitted by temperature measuring probes to ensure measurement accuracy.

In particular, the temperature sensor also has a humidity collection function, and the display terminal also includes another temperature sensor to collect the temperature and humidity of the surrounding environment. The display terminal is also connected to a fan and a heater, and the fan and heater are arranged on In the switch cabinet, the display terminal is used to detect and control the cooling and dehumidification functions of the switch cabinet. Of course, both the temperature measuring probe and the display terminal also include a processing unit for processing signals and controlling the operation of the system.

Preferably, the temperature measuring probe adopts a flame-retardant shell and a flame-retardant circuit board to improve the environmental adaptability of the temperature measuring probe; the temperature measuring probe uses Direct Sequence Spread Spectrum (DSSS) for communication, To improve the anti-interference ability; the temperature measuring probe also includes an overvoltage protection module and an overcurrent protection module, and adopts electromagnetic compatibility and anti-interference measures to improve the stability of the system.

As shown in Figure 2, the temperature measuring probe is poured in an annular housing 1, and a heat conducting member 2 is arranged on the inner diameter of the annular housing 1 (the heat conducting member is preferably made of red copper, the heat conduction speed is fast, the heat low loss and small deviation); a spring buckle 3 is also provided on the inner diameter of the annular shell 1, which is convenient for installation and disassembly.

The above preferred embodiments have further described the purpose, technical solutions and advantages of the utility model in detail. It should be understood that the above descriptions are only preferred embodiments of the utility model and are not intended to limit the utility model. For new models, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims (1)

1. a self-inducting high-voltage contact wireless temperature measuring device, is characterized in that: comprise a temperature probe and a display terminal;

Described temperature probe comprises a temperature sensor, a wireless transmitter module and a current transformer; After described temperature sensor collecting temperature information, send described display terminal to by described wireless transmitter module, described current transformer is arranged at and is beneficial to utilize electromagnetic induction generation current in high-voltage contact is described temperature sensor and wireless transmitter module power supply;

Described display terminal comprises a wireless receiving module and a display screen; Described wireless receiving module is sent to described demonstration screen display after receiving the temperature signal that described temperature probe sends;

Described temperature probe also comprises an overvoltage protective module and an overcurrent protection module; Described temperature probe is cast in an annular shell, and a heat conduction member is set on the internal diameter of this annular shell; One clamp button of the spring is also set on the internal diameter of described annular shell, is easy for installation and removal; Described display terminal also connects a fan and a well heater, in order to realize cooling and dehumidification function.