CN204857507U - Digital sulfur hexafluoride density relay with remote monitoring function - Google Patents

Abstract

The utility model discloses a possess long -range monitoring function's digital sulfur hexafluoride density relay, its can with the distal end radio communication of surveillance center, can also reliably monitor the state of sulfur hexafluoride circuit breaker. In order to achieve the purposes, the utility model discloses contain the gas circuit sensor with the air chamber of circuit breaker intercommunication, be provided with pressure sensor in the gas circuit sensor, still contain with the temperature measurement air chamber of the air chamber of gas circuit sensor intercommunication, install temperature sensor in the temperature measurement air chamber, still contain with gas circuit sensor and temperature measurement air chamber control connection's electric relay body, electric relay body includes the box and sets up the control circuit board in the box, the last GPRS module of installing of control circuit board, the wireless communication of surveillance center of communication base and distal end is passed through to the GPRS module.

Description

Digital sulfur hexafluoride density relay with remote monitoring function

technical field

The utility model relates to a sulfur hexafluoride relay, in particular to a digital sulfur hexafluoride density relay.

Background technique

Sulfur hexafluoride circuit breakers are high-voltage electrical appliances widely used in power systems. The reliable operation of sulfur hexafluoride circuit breakers has become one of the most concerned issues for power supply and utilization departments. The insulation and arc extinguishing performance of sulfur hexafluoride circuit breaker depends to a large extent on the density of sulfur hexafluoride gas, so the monitoring of the density of sulfur hexafluoride gas is particularly important.

Most of the existing density meters used to monitor SF6 circuit breakers are realized by monitoring temperature and pressure; the temperature information and pressure information collected by the SF6 density relay in the prior art cannot be transmitted to the remote end, so People must read on-site; for the mechanical density relay, its on-site reading (meter reading) is also slightly complicated; meanwhile, in the prior art, the sulfur hexafluoride density relay is made into an integrated structure, and its control circuit board and The monitoring meter head (sensor) is designed in one piece and installed directly on the circuit breaker. The vibration of the circuit breaker and the difference in temperature may cause misoperation of the SF6 density meter, especially the internal magnetic protection relay.

Utility model content

Aiming at the deficiencies in the above-mentioned prior art, the purpose of this utility model is to provide a digital sulfur hexafluoride density relay with remote monitoring function, which can wirelessly communicate with the remote monitoring center, and can also reliably monitor sulfur hexafluoride The state of the circuit breaker.

In order to achieve the above object, the utility model adopts the following technical solutions to achieve.

The digital sulfur hexafluoride density relay with remote monitoring function includes a gas path sensor connected to the gas chamber of the circuit breaker; a pressure sensor is installed in the gas path sensor; it also includes a temperature measuring sensor connected to the gas chamber of the gas path sensor A gas chamber, a temperature sensor is installed in the temperature measuring chamber;

It also includes a relay body that is connected to the gas path sensor and the temperature measuring chamber; the relay body includes a box and a control circuit board arranged in the box, and the control circuit board is equipped with a GPRS module. The GPRS module communicates wirelessly with the remote monitoring center through the communication base station.

Preferred embodiment of the present utility model and further improvement point are as follows:

(1) The control circuit board is also equipped with a display, a sensor connector connected to the pressure sensor of the gas path sensor, a temperature measuring gas chamber signal connector and a power connector connected to the temperature sensor of the temperature measuring gas chamber;

The control circuit board is also provided with a switch and three sets of contact setting components; each set of contact setting components includes a set of dial switches and a normally open/normally closed state switch; An antenna is installed, and the antenna is electrically connected to the GPRS module.

(2) The gas chamber of the circuit breaker is connected to the gas pipe, and the far end of the gas pipe is connected to the gas path interface of the gas path sensor, and the gas chamber pipeline interface of the gas path sensor is connected to the inlet pipe interface of the temperature measuring gas chamber through the pipeline The signal interface of the gas path sensor is connected to the sensor connector of the relay body through a wire; the signal transmission interface of the temperature measuring gas chamber is connected to the signal connector of the temperature measuring gas chamber of the relay body through a wire.

Further, the temperature-measuring gas chamber also includes an exhaust pipe interface communicating with the gas chamber.

(3) The monitoring center includes a monitoring terminal, and the monitoring terminal includes a computer and a handheld terminal; the handheld terminal includes a mobile phone.

Further, the display of the relay body is two sets of nixie tube displays respectively used to display the density value and the temperature value.

Compared with the prior art, the utility model has outstanding substantive features and remarkable effects:

The utility model includes a gas path sensor connected with the gas chamber of the circuit breaker; a pressure sensor is arranged in the gas path sensor; a temperature measuring gas chamber connected with the gas chamber of the gas path sensor is also included, and a temperature sensor is installed in the temperature measuring gas chamber; The air sensor and circuit breaker, the air sensor and the relay body are all designed separately; the work is reliable; we set the temperature measuring gas chamber to introduce the gas in the circuit breaker into an independent cavity with a relatively large diameter of the pipeline, so that The measured temperature value is more accurate;

The utility model is equipped with a GPRS module on the control circuit board, and the GPRS module communicates wirelessly with a remote monitoring center through a communication base station. We have realized the wireless data transmission function through the GPRS module, and the GPRS module has the advantages of wide signal coverage and low cost, and finally allows people to directly obtain the gas density and temperature information of the circuit breaker from the remote end, reducing labor intensity, and at the same time, real-time Remotely control the circuit breaker status.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the overall structure schematic diagram of a kind of specific embodiment of the present utility model;

Fig. 2 is a schematic structural view of a specific embodiment of the gas path sensor of the present invention;

Fig. 3 is a structural schematic diagram of a specific embodiment of the temperature measuring gas chamber of the present invention;

Fig. 4 is a structural schematic diagram of a specific embodiment of the relay body of the present invention.

Explanation of reference signs:

100-circuit breaker, 200-gas path sensor, 300-temperature measuring chamber, 400-relay body, 500-communication base station, 600-monitoring center;

201-pressure sensor, 202-gas circuit interface, 203-air chamber pipeline interface, 204-signal interface;

301-intake pipe interface, 302-exhaust pipe interface, 303-signal transmission interface, 304-temperature sensor;

401-sensor connector, 402-temperature measuring gas chamber signal connector, 403-power connector, 404-GPRS module, 405-display, 406-switch, 407-first DIP switch, 408-second DIP switch, 409- The third dial switch, 410-first status switch, 411-second status switch, 412-third status switch, 413-antenna, 414-control circuit board.

Detailed ways

The utility model is illustrated through the following specific implementation modes as examples.

As shown in Figures 1 to 4, the digital sulfur hexafluoride density relay with remote monitoring function includes a gas path sensor 200 connected to the gas chamber of the circuit breaker 100 (sulfur hexafluoride circuit breaker); the gas path sensor 200 A pressure sensor 201 is arranged inside; a temperature measuring gas chamber 300 communicating with the gas chamber of the gas path sensor 200 is also included, and a temperature sensor 304 is installed in the temperature measuring gas chamber 300;

As shown in the figure, it also includes a relay body 400 that is controlled and connected to the gas path sensor 200 and the temperature measuring gas chamber 300; A GPRS module 404 is installed on the circuit board 414 , and the GPRS module 404 communicates wirelessly with the remote monitoring center 600 through the communication base station 500 .

Preferably, as shown in the figure, the control circuit board 414 is also equipped with a display 405, a sensor joint 401 connected to the pressure sensor of the gas path sensor, and a temperature measuring gas chamber connected to the temperature sensor of the temperature measuring gas chamber Signal connector 402 and power connector 403; the control circuit board directly displays the signal through the display after receiving the signal, which is easy to read;

As shown in the figure, the control circuit board is also provided with a switch 406 and three groups of contact setting components; each group of contact setting components includes a group of dial switches (the first dial switch 407, the second dial switch 408 and the third dial switch 409) and a normally open/normally closed state switch (the first state switch 410, the second state switch 411 and the third state switch 412); Antenna 413 , the antenna is electrically connected to the GPRS module 404 . The three groups of contacts can be set to states corresponding to different density values. For example, the first contact setting component can be set to alarm, and the second contact setting component can be set to control disconnection.

Preferably, as shown in the figure, the gas chamber of the circuit breaker is connected to a gas pipe, and the far end of the gas pipe is connected to the gas circuit interface 202 of the gas path sensor, and the gas chamber pipeline interface 203 of the gas path sensor is connected to the measuring tube through the pipeline. The air inlet pipe interface 301 of the warm gas chamber; the signal interface 204 of the gas path sensor is connected to the sensor joint of the relay body through a wire; the signal transmission interface 303 of the temperature measuring gas chamber is connected to the temperature measuring gas chamber signal of the relay body through a wire connector.

Preferably, as shown in the figure, the temperature measuring gas chamber further includes an exhaust pipe interface 302 communicating with the gas chamber. The exhaust pipe interface is reserved, and it can be used or not; when the exhaust pipe interface is normally closed, the gas circulation in the temperature measuring chamber is poor. When the exhaust pipe interface is opened, it can be connected to the air chamber in the circuit breaker If it is connected, the sulfur hexafluoride gas can be circulated to ensure that the gas temperature in the temperature measuring chamber and the circuit breaker are exactly the same.

Preferably, as shown in the figure, the monitoring center includes a monitoring terminal, and the monitoring terminal includes a computer and a handheld terminal; the handheld terminal includes a mobile phone. As long as it is a device that can access the Internet, the monitoring information can be viewed through the display screen, which is very convenient.

Preferably, as shown in the figure, the display of the relay body is two sets of nixie tube displays respectively used to display the density value and the temperature value. The stability of the digital display is better.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiment. Make various changes.

Many other changes and modifications can be made by those skilled in the art without departing from the concept and scope of the present utility model. It should be understood that the invention is not limited to specific embodiments, and the scope of the invention is defined by the appended claims.

Claims (6)

1. possess the digital sulfur hexafluoride density relay of Remote monitoring function, it is characterized in that: comprise the gas circuit transducer be communicated with the air chamber of circuit breaker; Pressure sensor is provided with in gas circuit transducer; Also comprise the thermometric air chamber be communicated with the air chamber of gas circuit transducer, in thermometric air chamber, temperature sensor is installed;

Also comprise the relay body with described gas circuit transducer and thermometric air chamber control connection; Described relay body includes casing and is arranged on control circuit board in casing, and described control circuit board is provided with GPRS module, and described GPRS module is by Surveillance center's wireless telecommunications of communication base station and far-end.

2. possess the digital sulfur hexafluoride density relay of Remote monitoring function as claimed in claim 1, it is characterized in that: described control circuit board is also provided with display, with the sensor connector of the pressure sensor control connection of gas circuit transducer, with the thermometric gas cell signal joint of the temperature sensor control connection of thermometric air chamber and power connection;

Described control circuit board is also provided with switch and three groups of contacts arrange assembly; Often organize contact arrange assembly all comprise one group of toggle switch and one often drive/normally off switch; The casing of described relay body is also provided with antenna, and described antenna is electrically connected with described GPRS module.

3. possesses the digital sulfur hexafluoride density relay of Remote monitoring function as claimed in claim 2, it is characterized in that: connectivity trachea on the air chamber of described circuit breaker, the far-end of tracheae is connected to the air-path interface of gas circuit transducer, and the air chamber pipe interface of gas circuit transducer is connected to the air inlet pipe interface of thermometric air chamber by pipeline; The signaling interface of gas circuit transducer is connected to by wire in the sensor connector of described relay body; The signal transmission interface of thermometric air chamber is connected to the thermometric gas cell signal joint of relay body by wire.

4. possess the digital sulfur hexafluoride density relay of Remote monitoring function as claimed in claim 3, it is characterized in that: described thermometric air chamber also includes the exhaust port be communicated with air chamber.

5. possess the digital sulfur hexafluoride density relay of Remote monitoring function as claimed in claim 1, it is characterized in that: described Surveillance center includes monitor terminal, described monitor terminal comprises computer and handheld terminal; Described handheld terminal comprises mobile phone.

6. possess the digital sulfur hexafluoride density relay of Remote monitoring function as claimed in claim 2, it is characterized in that: the display of described relay body is the two groups of numeral method devices being respectively used to display density value and temperature value.