SF6 online monitoring device

Abstract

The utility model provides an SF6 online monitoring device. The SF6 online monitoring device comprises a gas acquisition module, a temperature and humidity monitoring module, a central controller, a fan control module, a human body induction module, an alarm module, a display module, a remote control module, a data integration module and a power supply module, the temperature and humidity monitoring module, the fan control module, the human body induction module, the alarm module, the display module, the remote control module and the data integration module are all connected with the central controller, and the gas collection module is connected with the data integration module. And the power supply module is used for supplying power to the gas collection module, the temperature and humidity monitoring module, the fan control module, the human body induction module, the alarm module, the display module, the remote control module, the data integration module and the central controller. According to the utility model, the functions of real-time monitoring of SF6 concentration of a plurality of point positions in a space, analysis of historical data and remote control are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage detection, in particular to an SF6 online monitoring device. Background Art

[0002] SF6 is a colorless, odorless, non-toxic, non-flammable synthetic gas with incomparable insulation properties and arc extinguishing capabilities compared to general dielectrics. Therefore, this medium is widely used as an insulating arc extinguishing medium between high-voltage equipment. Metal-sealed electrical appliances (GIS) filled with SF6 insulating gas have the advantages of small footprint, low operating noise, and no fire risk.

[0003] However, high-voltage switchgear equipped with SF6 insulating gas will damage the sealing of the equipment and cause SF6 gas leakage due to manufacturing process, equipment aging, maintenance operation errors and other reasons. This will lead to reduced insulation of high-voltage switchgear and even serious accidents such as equipment burning. At the same time, although pure SF6 gas is non-toxic, due to its higher specific gravity than air, it is easy to accumulate in the bottom space. If it accumulates to a certain extent, it will cause brain hypoxia and even suffocation to the operation and maintenance personnel who enter. Serious personal safety accidents. Moreover, under the influence of factors such as arc discharge and high temperature, SF6 gas will decompose to produce toxic gases such as SF4 and S2F2, which not only affects personal safety, but also produces corrosive electrolytes after the generated gas dissolves in water, further endangering the safe operation of high-voltage equipment. Therefore, it is very necessary to design an SF6 online monitoring device. Utility Model Content

[0004] The purpose of the utility model is to provide an SF6 online monitoring device to realize the functions of real-time monitoring of SF6 concentration at multiple points in a space, analysis of historical data and remote control.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] An SF6 online monitoring device comprises: a gas collection module, a temperature and humidity monitoring module, a central controller, a fan control module, a human body sensing module, an alarm module, a display module, a remote control module, a data integration module and a power module; the temperature and humidity monitoring module, the fan control module, the human body sensing module, the alarm module, the display module, the remote control module and the data integration module are all connected to the central controller, the gas collection module is connected to the data integration module, and the power module is used to supply power to the gas collection module, the temperature and humidity monitoring module, the fan control module, the human body sensing module, the alarm module, the display module, the remote control module, the data integration module and the central controller;

[0007] The gas collection module includes: a gas transmitter, an infrared light generator and an infrared light measuring device; the gas transmitter is connected to the infrared light generator, the infrared light generator is connected to the infrared light measuring device, and the infrared light measuring device is connected to the data integration module; the gas transmitter is used to actively absorb the gas around the monitoring point, the infrared light generator is used to emit an infrared spectrum of a specific band, and the infrared light measuring device is used to obtain the SF6 and oxygen content according to the difference in the infrared spectrum absorbed by the gas;

[0008] The remote control module includes a server and a communication unit; the server and the central controller exchange data through the communication unit, and the server sends the control instructions to the central controller through the communication unit;

[0009] The data integration module is used to store and integrate the SF6 and oxygen content data obtained from multiple monitoring points, and automatically start and stop the fans corresponding to different monitoring points through the fan control module. The data integration module is also used to generate charts based on the SF6 and oxygen content data.

[0010] Optionally, the temperature and humidity monitoring module is used to measure the temperature and humidity content data around the monitoring point; the temperature measurement range of the temperature and humidity monitoring module is -20℃~100℃, the temperature measurement accuracy is ±1℃, the humidity measurement range is 0~99%, and the humidity measurement accuracy is ±2%.

[0011] Optionally, the display module is built with a display; the display is used to set and display the operating parameters of the monitoring device, and the display is also used to control the start and stop of the fan through the fan control module.

[0012] Optionally, the human body sensing module is used to detect whether there are staff around the monitoring point.

[0013] Optionally, the SF6 monitoring range of the gas acquisition module is 0-2000PPM, the SF6 measurement accuracy is ±2%FS, the SF6 measurement resolution is 1PPM, the oxygen monitoring range is 0-25%, the oxygen measurement accuracy is ±0.5%, and the oxygen measurement resolution is 0.1%.

[0014] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects: an SF6 online monitoring device, comprising: a gas collection module, a temperature and humidity monitoring module, a central controller, a fan control module, a human body sensing module, an alarm module, a display module, a remote control module, a data integration module and a power supply module; the temperature and humidity monitoring module, the fan control module, the human body sensing module, the alarm module, the display module, the remote control module and the data integration module are all connected to the central controller, the gas collection module is connected to the data integration module, and the power supply module is used to power the gas collection module, the temperature and humidity monitoring module, the fan control module, the human body sensing module, the alarm module, the display module, the remote control module, the data integration module and the central controller; the gas collection module comprises: a gas transmitter, an infrared light generator and an infrared light The gas transmitter is connected to the infrared light generator, the infrared light generator is connected to the infrared light measuring device, and the infrared light measuring device is connected to the data integration module; the gas transmitter is used to actively absorb the gas around the monitoring point, the infrared light generator is used to emit an infrared spectrum of a specific band, and the infrared light measuring device is used to obtain the SF6 and oxygen content respectively according to the difference of the infrared spectrum absorbed by the gas; the remote control module includes a server and a communication unit; the server and the central controller exchange data through the communication unit, and the server sends the control command to the central controller through the communication unit; the data integration module is used to store and integrate the SF6 and oxygen content data obtained by multiple monitoring points, and automatically start and stop the fans corresponding to different monitoring points through the fan control module. The data integration module is also used to generate charts based on the SF6 and oxygen content data. The device realizes the functions of real-time monitoring of SF6 concentration at multiple points in the space, analysis of historical data and remote control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a structural diagram of the SF6 online monitoring device according to an embodiment of the utility model.

[0017] Figure numerals: 1. Gas collection module; 2. Temperature and humidity monitoring module; 3. Central controller; 4. Fan control module; 5. Human body sensing module; 6. Alarm module; 7. Display module; 8. Remote control module; 9. Data integration module; 10. Power module. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] like Figure 1 As shown, an embodiment of the utility model provides a SF6 online monitoring device, including: a gas collection module 1, a temperature and humidity monitoring module 2, a central controller 3, a fan control module 4, a human body sensing module 5, an alarm module 6, a display module 7, a remote control module 8, a data integration module 9 and a power module 10; the temperature and humidity monitoring module 2, the fan control module 4, the human body sensing module 5, the alarm module 6, the display module 7, the remote control module 8 and the data integration module 9 are all connected to the central controller 3, the gas collection module 1 is connected to the data integration module 9, and the power module 10 is used to power the gas collection module 1, the temperature and humidity monitoring module 2, the fan control module 4, the human body sensing module 5, the alarm module 6, the display module 7, the remote control module 8, the data integration module 9 and the central controller 3.

[0021] Specifically, the gas collection module 1 includes: a gas transmitter, an infrared light generator and an infrared light measuring device; the gas transmitter is connected to the infrared light generator, the infrared light generator is connected to the infrared light measuring device, and the infrared light measuring device is connected to the data integration module 9; the gas transmitter is used to actively absorb the gas around the monitoring point, the infrared light generator is used to emit an infrared spectrum of a specific band, and the infrared light measuring device is used to obtain the SF6 and oxygen content respectively according to the difference in the infrared spectrum absorbed by the gas; the number of monitoring points is multiple.

[0022] More specifically, the SF6 monitoring range of the gas collection module 1 is 0-2000PPM, the SF6 measurement accuracy is ±2%FS, the SF6 measurement resolution is 1PPM, the oxygen monitoring range is 0-25%, the oxygen measurement accuracy is ±0.5%, and the oxygen measurement resolution is 0.1%.

[0023] Specifically, the remote control module 8 includes a server and a communication unit; the server and the central controller 3 perform data exchange via the communication unit, and the server sends the control instructions to the central controller 3 via the communication unit.

[0024] Specifically, the data integration module 9 is used to store and integrate the SF6 and oxygen content data obtained from multiple monitorings at multiple monitoring points, and automatically start and stop the fans corresponding to different monitoring points through the fan control module 4. The data integration module 9 is also used to generate charts based on the SF6 and oxygen content data; the charts include: historical data curves of each monitoring point and gas anomaly bar graphs of each monitoring point.

[0025] Specifically, the temperature and humidity monitoring module 2 is used to measure the temperature and humidity content data around the monitoring point; the temperature measurement range of the temperature and humidity monitoring module 2 is -20℃~100℃, the temperature measurement accuracy is ±1℃, the humidity measurement range is 0~99%, and the humidity measurement accuracy is ±2%.

[0026] Specifically, the display module 7 has a built-in display; the display adopts a touch-sensitive LCD screen, and the display interface of the LCD screen displays various monitoring data of the monitoring device in real time. The operating parameters and alarm thresholds of the monitoring device can also be input through the display interface; the SF6 concentration alarm threshold is 500PPM, and the oxygen concentration alarm threshold is 18%.

[0027] Specifically, the human body sensing module 5 has a built-in infrared human body sensor, and detects whether there are staff members around the monitoring point through the infrared human body sensor.

[0028] Specifically, the central controller 3 is used to determine whether to send an alarm instruction to the alarm module 6 and start the fan at the abnormal monitoring point through the comparison result of the gas concentration at each monitoring point in the data integration module 9 with the alarm threshold.

[0029] Specifically, the fan control module 4 is used to control the start and stop of the fan.

[0030] Specifically, the alarm module 6 adopts an audible and visual alarm mode.

[0031] Specifically, the monitoring device is compatible with AC and DC power supplies, and the total power consumption is less than 100W; the input voltage range of the power module 10 is 180-500VAC or 254-780VDC, wherein the AC frequency range is 47-63HZ.

[0032] The working process of the embodiment of the utility model is as follows: the SF6 and oxygen concentrations of multiple monitoring points are monitored in real time through the gas collection module 1, each monitoring point is numbered through the data integration module 9, and the measured gas concentration data is sorted and a chart is generated, the temperature and humidity of the environment in which the monitoring point is located are monitored in real time through the temperature and humidity monitoring module 2, the display module 7 displays various monitoring data and operating parameters of the monitoring device on the display, the central controller 3 determines whether to send an alarm instruction to the alarm module 6 or whether to send a start-stop fan instruction to the fan control module 4 through various monitoring data and the sensing results of the human body sensing module 5, and the various monitoring data are viewed through the remote control module 8 and the fan is remotely controlled.

[0033] Specifically, when the human body sensing module 5 detects that there is a worker near the monitoring point, the central controller 3 sends a command to the fan control module 4 to start the fan at the corresponding monitoring point; when the human body sensing module 5 detects that the worker has left, the fan is stopped.

[0034] Specifically, when the SF6 concentration at the monitoring point exceeds the SF6 concentration alarm threshold, the central controller 3 sends an alarm instruction to the alarm module 6 and starts the fan at the corresponding monitoring point until the SF6 concentration is lower than the SF6 alarm threshold; when the oxygen concentration, ambient temperature or ambient humidity is lower than the corresponding alarm threshold, the central controller 3 sends an alarm instruction to the alarm module 6.

[0035] The beneficial effects of the utility model are as follows:

[0036] 1) By real-time monitoring of SF6 concentration at multiple points in the space, the location of gas leakage can be determined more accurately;

[0037] 2) Historical data can be viewed, which improves the pertinence of equipment monitoring;

[0038] 3) The functions of remote viewing of monitoring data and remote control are realized.

[0039] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0040] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An SF6 online monitoring device, characterized in that: include: Gas collection module, temperature and humidity monitoring module, central controller, fan control module, human body sensing module, alarm module, display module, remote control module, data integration module and power module; the temperature and humidity monitoring module, the fan control module, the human body sensing module, the alarm module, the display module, the remote control module and the data integration module are all connected to the central controller, the gas collection module is connected to the data integration module, and the power module is used to power the gas collection module, the temperature and humidity monitoring module, the fan control module, the human body sensing module, the alarm module, the display module, the remote control module, the data integration module and the central controller; The gas collection module includes: a gas transmitter, an infrared light generator and an infrared light measuring device; the gas transmitter is connected to the infrared light generator, the infrared light generator is connected to the infrared light measuring device, and the infrared light measuring device is connected to the data integration module; the gas transmitter is used to actively absorb the gas around the monitoring point, the infrared light generator is used to emit an infrared spectrum of a specific band, and the infrared light measuring device is used to obtain the SF6 and oxygen content according to the difference of the infrared spectrum absorbed by the gas; The remote control module includes a server and a communication unit; the server and the central controller perform data exchange through the communication unit, and the server sends a control instruction to the central controller through the communication unit; The data integration module is used to store and integrate the SF6 and oxygen content data obtained by multiple monitoring of multiple monitoring points, and automatically start and stop the fans corresponding to different monitoring points through the fan control module. The data integration module is also used to generate charts based on the SF6 and oxygen content data.

2. The SF6 online monitoring device according to claim 1 is characterized in that: The temperature and humidity monitoring module is used to measure the temperature and humidity content data around the monitoring point; the temperature measurement range of the temperature and humidity monitoring module is -20℃~100℃, the temperature measurement accuracy is ±1℃, the humidity measurement range is 0~99%, and the humidity measurement accuracy is ±2%.

3. The SF6 online monitoring device according to claim 1 is characterized in that: The display module has a built-in display; the display is used to set and display the operating parameters of the monitoring device, and the display is also used to control the start and stop of the fan through the fan control module.

4. The SF6 online monitoring device according to claim 1 is characterized in that: The human body sensing module is used to detect whether there are staff around the monitoring point.

5. The SF6 online monitoring device according to claim 1 is characterized in that: The SF6 monitoring range of the gas acquisition module is 0-2000PPM, the SF6 measurement accuracy is ±2%FS, the SF6 measurement resolution is 1PPM, the oxygen monitoring range is 0-25%, the oxygen measurement accuracy is ±0.5%, and the oxygen measurement resolution is 0.1%.

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