A SF6 gas monitoring device for substation

Abstract

The utility model discloses a substation SF6 gas monitoring device, including a main body back plate, a bottom support fixed to the bottom of the main body back plate, and an SF6 gas monitor placed on the bottom support, the middle of the main body back plate is connected with a fixing screw, and a clamping groove is provided in the middle of the main body back plate, one side of the main body back plate is connected with a short air intake pipe, the short air intake pipe is connected with a near fan, and the other side of the main body back plate is connected with a long air intake pipe, the long air intake pipe is connected with a far fan. By setting a monitoring port on the back of the SF6 gas monitor corresponding to the air outlet, the gas blown out of the air outlet can be directly detected to achieve all-round detection, thereby increasing the monitoring range of the device and greatly improving the safety of the device. At the same time, the clamping block and the clamping groove are slidably connected, so that when installing, different SF6 gas monitors can be installed at will for detection by simply fixing the position of the main body back plate, thereby increasing the flexibility of use of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of gas monitoring in transformer substations, in particular to a SF6 gas monitoring device in transformer substations. Background Art

[0002] Sulfur hexafluoride is an important medium with excellent insulation and arc extinguishing properties. It is often used as arc extinguishing and insulating gas in closed high-voltage switch rooms. But at the same time, sulfur hexafluoride is also a gas that is harmful to operators. First of all, sulfur hexafluoride will react and decompose or react with electrodes (Cu-W alloy or Al, Cu) when subjected to high-temperature arc discharge to produce a variety of toxic decomposition products, such as fluorinated acetyl, fluorinated sulfuryl, sulfur tetrafluoride, sulfur difluoride, etc. These toxic decomposition products generally have strong corrosive effects on the human respiratory tract, skin and lungs. Therefore, SF6 gas monitoring devices need to be installed in substations to avoid safety accidents caused by workers still working after gas leakage. However, the monitoring range of existing monitoring devices is a certain area around, which is relatively small, and the monitoring device is expensive. Setting it up in all locations will undoubtedly increase the high cost. For this reason, a theme is proposed. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted in this utility model is:

[0005] A substation SF6 gas monitoring device comprises a main body back plate, a bottom support fixed to the bottom of the main body back plate, and an SF6 gas monitor placed on the bottom support, wherein a fixing screw is connected through the middle of the main body back plate, and a clamping groove is provided in the middle of the main body back plate, a short air intake pipe is connected to one side of the main body back plate, and a near air blower is connected to the short air intake pipe, a long air intake pipe is connected to the other side of the main body back plate, and a far air blower is connected to the long air intake pipe, a clamping block is provided on the back of the SF6 gas monitor, and the clamping block is clamped in the clamping groove, and a monitoring port corresponding to a gas outlet is provided in the middle of the back of the SF6 gas monitor.

[0006] Preferably, an exhaust pipe is provided at the outer end of the near fan, and a long hose is connected to the upper and lower ends of the far fan, and a fixing buckle is clamped in the middle of the long hose.

[0007] Preferably, side clamps are provided on both sides of the bottom of the SF6 gas monitor, the side clamps are overlapped on the top of the bottom support, and a fixing part passes through the middle of the side clamps and is threadedly connected to the top of the bottom support.

[0008] Preferably, the inner end of the long hose is fixedly mounted on the side of the back plate of the main body.

[0009] Preferably, there are two air outlets, one long and one short. The short air inlet pipe corresponds to the air outlet with a larger length value, and the long air inlet pipe corresponds to the air outlet with a smaller length value.

[0010] Preferably, a screen is provided on the air outlet, and a screen is also provided on the monitoring port.

[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0012] In the utility model, a monitoring port is arranged on the back of the SF6 gas monitor to correspond to the gas outlet, so that the gas blown out of the gas outlet can be directly detected to achieve all-round detection, thereby increasing the monitoring range of the device and greatly improving the safety of the device. At the same time, a snap-in block and a snap-in groove are used for sliding connection, so that during installation, different SF6 gas monitors can be installed at will for detection by simply fixing the position of the main body back plate, thereby increasing the flexibility of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the main body back panel of an embodiment of the utility model;

[0015] Figure 3 This is a rear view schematic diagram of an SF6 gas monitor according to an embodiment of the utility model.

[0016] Reference numerals:

[0017] 101. Main body back plate; 102. Fixing screws; 103. Short air inlet pipe; 104. Near fan; 105. Exhaust pipe; 106. Long air inlet pipe; 107. Far fan; 108. Long hose; 109. Fixing buckle; 110. Air outlet; 111. Snap-in groove; 112. Bottom support; 113. Fixing piece; 114. Snap-in block; 115. SF6 gas monitor; 116. Side snap ring; 117. Monitoring port. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0019] A substation SF6 gas monitoring device provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings.

[0020] Embodiment 1:

[0021] Combination Figure 1-3 As shown, the utility model provides a substation SF6 gas monitoring device, including a main body back plate 101, a bottom support 112 fixed to the bottom of the main body back plate 101, and an SF6 gas monitor 115 placed on the bottom support 112. A fixing screw 102 is connected through the middle of the main body back plate 101, and a clamping groove 111 is opened in the middle of the main body back plate 101. A short air intake pipe 103 is connected to one side of the main body back plate 101, and a near fan 104 is connected to the short air intake pipe 103. A long air intake pipe 106 is connected to the other side of the main body back plate 101, and a far fan 107 is connected to the long air intake pipe 106. The outer end of the near fan 104 is provided with an exhaust pipe 105. The upper and lower ends of the remote blower 107 are connected with a long hose 108, and a fixing buckle 109 is clamped in the middle of the long hose 108. The inner end of the long hose 108 is fixedly installed on the side of the main back plate 101. A clamping block 114 is arranged on the back of the SF6 gas monitor 115. Side clamping rings 116 are arranged on both sides of the bottom of the SF6 gas monitor 115. The side clamping ring 116 is overlapped on the top of the bottom support 112. The middle of the side clamping ring 116 is penetrated by a fixing piece 113 and is threadedly connected to the top of the bottom support 112. The clamping block 114 is clamped in the clamping groove 111, and a monitoring port 117 corresponding to the gas outlet 110 is arranged in the middle of the back of the SF6 gas monitor 115.

[0022] Specifically, the position of the main body back panel 101 is fixed by fixing screws 102, and the near and far gases are monitored respectively by the near fan 104 and the far fan 107. Compared with traditional monitoring, the device monitors a wider area, and no new monitoring equipment is required, which reduces the cost of installation. The SF6 gas monitor 115 is installed on the main body back panel 101 by means of the clamping block 114 and the side clamping ring 116, so that when it is damaged or repaired, it can be directly removed, which greatly improves the flexibility of use of the device.

[0023] Embodiment 2:

[0024] Combination Figure 1-3 As shown, on the basis of embodiment one, a screen is provided on the air outlet 110, and a screen is also provided on the monitoring port 117, and the air outlet 110 is divided into two, one long and one short. The short air inlet pipe 103 corresponds to the air outlet 110 with a larger length value, and the long air inlet pipe 106 corresponds to the air outlet 110 with a smaller length value.

[0025] Specifically, by setting a screen on the air outlet 110 and the monitoring port 117, impurities can be effectively blocked to prevent a large amount of dust from entering the device due to long-term use, thereby damaging the device, or dust and other impurities affecting the detection results, thereby improving the practicality of the device. The two air outlets 110 are set to be one long and one short, which is easy to distinguish and can also increase nearby gas circulation, so that the monitoring efficiency nearby is higher than that of distant monitoring, thereby ensuring the safety of the equipment nearby.

[0026] The working principle and use process of the utility model are as follows: first, the main body back plate 101 is fixed to the wall or other positions by fixing screws 102. After installation, the long hose 108 is extended to a farther position. When ready, the clamping block 114 on the back of the SF6 gas monitor 115 is aligned with the clamping groove 111, and then the SF6 gas monitor 115 is lowered onto the bottom support 112. Then, the position of the SF6 gas monitor 115 is completely fixed by passing the side clamp ring 116 through the fixing piece 113. After that, the near fan 104 and the far fan 107 are started to capture the surrounding gas, and the gas is discharged to the monitoring port 117 on the back of the SF6 gas monitor 115 through the gas outlet 110. Finally, after detection by the SF6 gas monitor 115, the concentration of SF6 gas at the monitoring position can be obtained. When the concentration exceeds the standard, a warning is immediately issued and the personnel can evacuate quickly.

[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A substation SF6 gas monitoring device, comprising a main body back plate (101), a bottom support (112) fixed to the bottom of the main body back plate (101), and an SF6 gas monitor (115) placed on the bottom support (112), characterized in that: A fixing screw (102) is connected through the middle of the main body back plate (101), and a snap-in groove (111) is provided in the middle of the main body back plate (101); a short air intake pipe (103) is connected to one side of the main body back plate (101), and a near air blower (104) is connected to the short air intake pipe (103); a long air intake pipe (106) is connected to the other side of the main body back plate (101), and a far air blower (107) is connected to the long air intake pipe (106); a snap-in block (114) is provided on the back of the SF6 gas monitor (115), and the snap-in block (114) is snap-fitted into the snap-in groove (111); and a monitoring port (117) corresponding to the gas outlet (110) is provided in the middle of the back of the SF6 gas monitor (115).

2. A substation SF6 gas monitoring device according to claim 1, characterized in that: An exhaust pipe (105) is provided at the outer end of the near air blower (104), and a long hose (108) is connected to the upper and lower ends of the far air blower (107), and a fixing buckle (109) is clamped in the middle of the long hose (108).

3. A substation SF6 gas monitoring device according to claim 1, characterized in that: Side clamping rings (116) are provided on both sides of the bottom of the SF6 gas monitor (115); the side clamping rings (116) are overlapped on the top of the bottom support (112); a fixing piece (113) passes through the middle of the side clamping ring (116) and is threadedly connected to the top of the bottom support (112).

4. A substation SF6 gas monitoring device according to claim 2, characterized in that: The inner end of the long hose (108) is fixedly mounted on the side of the main body back plate (101).

5. A substation SF6 gas monitoring device according to claim 1, characterized in that: The air outlets (110) are two, one long and one short. The short air inlet pipe (103) corresponds to the air outlet (110) with a larger length value, and the long air inlet pipe (106) corresponds to the air outlet (110) with a smaller length value.

6. A substation SF6 gas monitoring device according to claim 1, characterized in that: The gas outlet (110) is provided with a screen, and the monitoring port (117) is also provided with a screen.

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