SF6 and N2 mixed gas detector

Abstract

The invention discloses an SF6 and N2 mixed gas detector. The detector comprises a detector body, an instrument shell is arranged in the detector body, a mirror transmitter is arranged on the surface of the instrument shell, a frame body is arranged in the instrument shell, a frame inner cavity is formed in the frame body, a separation bottom plate is installed in the frame inner cavity, and a water cooling fan is installed on one side of the separation bottom plate in an avoiding mode. The water cooling fan and the water cooling pump which are arranged in the detector form water flow circulation under the cooperation of the water cooling pipe, and the rear part of the water cooling pump is attached to the mirror surface transmitter, so that heat generated by the mirror surface transmitter can be driven by water flow in the water flow circulation process, and the heat generated by the mirror surface transmitter can be dissipated along with the temperature change in the detector; the water-cooling pipe can correspondingly carry heat to the water-cooling heat dissipation air channel to be discharged by the fan, so that the interior is always kept in a constant-temperature state, the interior of the frame body is always kept in a constant-temperature state, and the situation of drifting caused by changes of environmental factors and the occurrence of precision errors are avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gas detection of electrical equipment, and particularly relates to an SF6 / N2 gas detector. BACKGROUND

[0002] SF6 / N2 mixed gas is a kind of gas mixed by sulfur hexafluoride and nitrogen gas in a certain proportion, and is mainly used for insulation and arc extinguishing of electrical equipment, and nitrogen oxygen decomposition products in the SF6 / N2 mixed gas are mainly derived from chemical reactions of the gas with impurities such as water and oxygen during discharge failure, and the decomposition products are directly related to the type, position and degree of failure, so that the internal failure of the equipment can be quickly and accurately analyzed and judged by detecting the decomposition products.

[0003] However, the prior art has the following disadvantages: in the actual detection process of the existing nitrogen oxygen decomposition product detector, due to the influence of environmental factors such as temperature change, unstable power supply voltage and the like, the nitrogen oxygen decomposition products generated by the SF6 / N2 mixed gas will drift due to the above-mentioned environmental temperature change in the detection process, and thus the detection precision is affected. SUMMARY

[0004] The application aims to overcome the above-mentioned deficiencies, and provides an SF6 / N2 mixed gas detector, water flow circulation work is completed under the action of a water cooling fan and a water cooling pump installed in the detector and a water cooling pipe, the water cooling pump behind a mirror surface transmitter is adhered under the action of the water flow, the mirror surface transmitter is cooled, the heat generated is discharged out of the detector through the carrying of the water cooling pipe and the heat dissipation of the fan, and thus the frame body always maintains a constant temperature state, the drift caused by the change of environmental factors is avoided, and the precision error is avoided.

[0005] In order to achieve the above-mentioned object, the present invention is realized by the following technical scheme: an SF6, N2 mixed gas detector, comprising a detector, an instrument shell is provided in the detector, a mirror transmitter is provided on the surface of the instrument shell, a frame body is provided in the instrument shell, a frame cavity is formed in the frame body, a partition bottom plate is installed in the frame cavity, a water-cooling fan is installed on one side of the partition bottom plate, a water-cooling pump is installed on the other side of the partition bottom plate, a proportional valve is installed on the lower surface of the partition bottom plate, and several an electrochemical sensor; a base plate groove is formed on the partition base plate, an ultraviolet differential gas measurement optical module is installed in the base plate groove, a module fixing shell is provided in the ultraviolet differential gas measurement optical module, an even number of anti-vibration fixing seats are installed below the module fixing shell; a water-cooled heat dissipation duct is provided in the water-cooled fan, a fan is installed behind the water-cooled heat dissipation duct, an even number of water-cooled pipes are connected to the water-cooled heat dissipation duct, a water-cooled pump bracket is provided at the bottom of the water-cooled pump, and the water-cooled pump bracket is fixed on the rear surface of the mirror transmitter.

[0006] The present invention is further improved in that a mounting plate is provided inside the electrochemical sensor, a plurality of sensors are mounted on the mounting plate, a straight-through connector is provided on each of the sensors, an air chamber cover is nested outside the sensor, and a circuit board is fixed to the surface of the air chamber cover.

[0007] The present invention is further improved in that a connection fixing seat is provided in the anti-vibration fixing seat, an insulating rubber column is installed on the connection fixing seat, a support pad is provided on the top of the insulating rubber column, an even number of connection sleeve locking bolts are installed on the surface of the support pad, and insulating pads are nested on the connection sleeve locking bolts. A magnetic ring is fixed under the support pad, an electromagnetic coil is provided under the magnetic ring, an even number of bent support frames are fixed on the inner wall of the electromagnetic coil, and a lower support locking frame is connected to the lower side of the bent support frame.

[0008] The present invention is further improved in that an output exhaust valve is connected to the rear of the module fixed shell, a second air outlet and a second air inlet are respectively provided on the module fixed shell, and a temperature control and signal processing board group is provided outside the module fixed shell.

[0009] Further improvement of the present application, the ultraviolet differential gas measurement optical module is provided with a 24V control panel, a flow sensor and a bracket are arranged in the frame cavity, a storage battery is arranged in front of the water-cooled fan, a mirror DCDC panel is installed on one side of the storage battery, a mainboard is installed on the other side of the storage battery, a mirror humidifying assembly is arranged below the flow sensor and the bracket, an air inlet module is arranged beside the mirror humidifying assembly, a purity module is arranged beside the air inlet module, an electrochemical sensor is arranged beside the air pump, an infrared gas sensor is arranged on one side of the air pump, an air pump electromagnetic valve is arranged on the other side of the air pump, and a three-way electromagnetic valve is arranged above the water-cooled pump.

[0010] Further improvement of the present application, the storage battery is provided with a charge management panel, a pressure sensor is arranged in the air inlet module, an air inlet three-way joint is connected below the pressure sensor, a sleeve terminal joint is connected below the air inlet three-way joint, a pressure stabilizing valve is connected beside the sleeve terminal joint, and a self-sealing air inlet joint is connected below the sleeve terminal joint.

[0011] Further improvement of the present application, the air inlet module cooperates with the proportional valve, one of the proportional valves is connected with the three-way electromagnetic valve, the other proportional valve is connected with the other mirror humidifying assembly, and the storage battery supplies power to the electronic components arranged in the frame cavity.

[0012] Further improvement of the present application, the air inlet three-way joint is connected with the mirror humidifying assembly through a pipeline, the mirror DCDC panel is electrically connected with the mirror transmitter, and the charge management panel is electrically connected with the storage battery.

[0013] Further improvement of the present application, a display screen is arranged on the surface of the instrument shell, a power switch is arranged in front of the instrument shell, an air inlet is arranged below the power switch, a USB socket is installed below the mirror transmitter, an under-voltage lamp is arranged beside the USB socket, a handle is connected to the instrument shell, a rear cover plate is installed at the back of the frame body, a fan cover is fixed on the surface of the rear cover plate, an RS458 is arranged on the surface of the rear cover plate, a grounding port is arranged beside the RS458, side cover plates are installed on both sides of the frame body, side pulleys are installed in the side cover plates, and upper and lower cover plates are installed on the frame body.

[0014] Further improvement of the present application, pulley grooves are formed in the side cover plates, a charging port is formed in one of the side cover plates, an air outlet is arranged beside the charging port, the upper and lower cover plates are divided into an upper cover plate and a lower cover plate, rubber strips are arranged on the upper and lower cover plates, heat conduction grooves are formed in the lower cover plate, the pulley grooves are slidably connected with the side pulleys, and the side pulleys are connected with the handle.

[0015] Compared with the prior art, the present application has the following beneficial effects: The present application forms water flow circulation through the cooperation of the water-cooled fan and the water-cooled pump arranged in the detector and the water-cooled pump attached to the mirror transmitter at the rear. The heat generated by the mirror transmitter can be carried by the water flow during the water flow circulation. With the change of the temperature inside the detector, the water-cooled pipe can carry the heat to the water-cooled heat dissipation air duct for exhaust by the fan, so that the internal temperature is always kept constant, and the frame body is always kept constant, avoiding the occurrence of drift due to the change of environmental factors and the occurrence of precision errors.

[0016] The present application realizes the non-contact suspension of the magnetic ring permanent magnet embedded at the bottom of the supporting pad under the electromagnetic field generated by the energization of the electromagnetic coil, and when the vibration attacks, the damping characteristics of the suspension system can offset more than 90% of the mechanical vibration, thereby ensuring the stability of the ultraviolet differential gas measurement optical module during operation and reducing the occurrence of measurement signal fluctuation or unstable display value. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The present application is a structural schematic diagram; Figure 2 The present application is a rear view structural schematic diagram of the instrument shell; Figure 3 The present application is a side view structural schematic diagram of the instrument shell; Figure 4 The present application is a bottom view structural schematic diagram of the instrument shell; Figure 5 The present application is an internal bottom view planar structural schematic diagram of the frame body; Figure 6 The present application is an internal top view planar structural schematic diagram of the frame inner cavity; Figure 7 The present application is a bottom view three-dimensional structural schematic diagram of the frame inner cavity; Figure 8 The present application is a three-dimensional structural schematic diagram of the water-cooled fan; Figure 9 The present application is a three-dimensional structural schematic diagram of the water-cooled pump; Figure 10 The present application is a top view structural schematic diagram of the ultraviolet differential gas measurement optical module; Figure 11 The present application is a three-dimensional structural schematic diagram of the anti-vibration fixing seat; Figure 12 The present application is a three-dimensional structural schematic diagram of the anti-vibration fixing seat; Figure 6 The present application is a three-dimensional structural schematic diagram of the anti-vibration fixing seat; Figure 13A local enlarged structure schematic view at B in the application Figure 12 A local enlarged structure schematic view at B in the application Figure 14 A top plane structure schematic view of the air inlet module in the application Figure 15 A gas path flow process schematic view of the SF6, N2 mixed gas detector in the application.

[0018] In the figure: detector-1, instrument shell-11, power switch-12, air inlet-13, display screen-14, USB socket-15, under-voltage lamp-16, handle-17, mirror surface transmitter-18, frame body-111, back cover plate-112, grounding port-113, RS458-114, fan cover-115, side cover plate-116, side pulley-117, upper and lower cover plates-118, frame inner cavity-1111, partition bottom plate-1112, water-cooled fan-1113, storage battery-1114, mirror surface DCDC board-1115, flow sensor and bracket-1116, mirror surface humidifying assembly-1117, air inlet module-1118, purity module-1119, main board-1120, ultraviolet differential gas measurement optical module-1121, air pump-1122, electrochemical sensor-1123, proportional valve-1124, 24V control board-1125, infrared gas sensor-1126, air pump electromagnetic valve-1127, three-way electromagnetic valve-1128, water-cooled pump-1129, pulley groove-1161, charging port-1162, air outlet-1163, heat conduction groove-1181, cushion rubber strip-1182, bottom plate groove-11121, fan-11131, water-cooled heat dissipation air duct-11132, water-cooled pipe-11133, charge management board-11141, pressure sensor-11181, air inlet three-way joint-11182, pressure stabilizing valve-11183, clamping sleeve terminal joint-11184, self-sealing air inlet joint-11185, module fixing shell-11211, anti-vibration fixing seat-11212, output exhaust valve-11213, second air outlet-11214, second air inlet-11215, temperature control and signal processing board group-11216, mounting plate-11231, circuit board-11232, straight-through joint-11233, air chamber cover-11234, sensor-11235, water-cooled pump bracket-11291, support pad-112121, insulating pad-112122, magnetic ring-112123, connection sleeve lock bolt-112124, power electromagnetic coil-112125, bent support bracket-112126, lower support lock bracket-112127, insulating rubber column-112128, connection fixing seat-112129. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be given to the present application in combination with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0020] As shown in the accompanying Figure 1 to the accompanying Figure 12 drawings: The embodiment provides a SF6 and N2 mixed gas detector, which comprises a detector 1, an instrument shell 11 is arranged in the detector 1, a display screen 14 is arranged on the surface of the instrument shell 11, a power switch 12 is arranged in front of the instrument shell 11, an air inlet 13 is arranged below the power switch 12, a USB socket 15 is installed below a mirror surface transmitter 18, an under-voltage lamp 16 is arranged beside the USB socket 15, a handle 17 is connected to the instrument shell 11, the mirror surface transmitter 18 is arranged on the surface of the instrument shell 11, a frame body 111 is arranged in the instrument shell 11, a rear cover plate 112 is installed at the rear of the frame body 111, a fan cover 115 is fixed to the surface of the rear cover plate 112, an RS458 114 is arranged on the surface of the rear cover plate 112, a grounding port 113 is arranged beside the RS458 114, side cover plates 116 are installed on the both sides of the frame body 111, side pulleys 117 are installed in the side cover plates 116, and upper and lower cover plates 118 are installed on the upper and lower of the frame body 111. A frame cavity 1111 is formed in the frame body 111, a partition bottom plate 1112 is installed in the frame cavity 1111, a water-cooling fan 1113 is installed on one side of the partition bottom plate 1112 in a avoiding mode, a water-cooling pump 1129 is installed on the other side of the partition bottom plate 1112 in a avoiding mode, a proportional valve 1124 is installed on the lower surface of the partition bottom plate 1112, a plurality of electrochemical sensors 1123 are arranged beside the proportional valve 1124, a 24V control board 1125 is arranged above an ultraviolet differential gas measurement optical module 1121, a flow sensor and a support 1116 are arranged in the frame cavity 1111, a storage battery 1114 is arranged in front of the water-cooling fan 1113, a mirror surface DCDC board 1115 is installed on one side of the storage battery 1114, a main board 1120 is installed on the other side of the storage battery 1114, a mirror surface humidifying assembly 1117 is arranged below the flow sensor and the support 1116, an air inlet module 1118 is arranged beside the mirror surface humidifying assembly 1117, a purity module 1119 is arranged beside the air inlet module 1118, an air pump 1122 is arranged beside the electrochemical sensor 1123, an infrared gas sensor 1126 is arranged on one side of the air pump 1122, an air pump electromagnetic valve 1127 is arranged on the other side of the air pump 1122, and a three-way electromagnetic valve 1128 is arranged above the water-cooling pump 1129. Pulley grooves 1161 are formed in the side cover plates 116, a charging port 1162 is formed on one of the side cover plates 116, an air outlet 1163 is arranged beside the charging port 1162, the upper and lower cover plates 118 are divided into an upper cover plate and a lower cover plate, gasket strips 1182 are arranged on the upper and lower cover plates 118, and a heat conduction groove 1181 is formed on the lower cover plate of the upper and lower cover plates 118. The water-cooling fan 1113 is provided with a water-cooling heat dissipation air duct 11132, a fan 11131 is installed behind the water-cooling heat dissipation air duct 11132, an even number of water-cooling pipes 11133 are connected to the water-cooling heat dissipation air duct 11132, a water-cooling pump support 11291 is arranged at the bottom of the water-cooling pump 1129, and the water-cooling pump support 11291 is fixed to the rear surface of the mirror surface transmitter 18.The charging management board 11141 is mounted on the storage battery 1114, the pressure sensor 11181 is arranged in the air inlet module 1118, the air inlet tee joint 11182 is connected below the pressure sensor 11181, the sleeve terminal joint 11184 is connected below the air inlet tee joint 11182, the pressure stabilizing valve 11183 is connected beside the sleeve terminal joint 11184, and the self-sealing air inlet joint 11185 is connected below the sleeve terminal joint 11184.

[0021] Further, the mirror surface transmitter 18 is embedded on the surface of the instrument shell 11 and partially arranged inside the instrument shell 11, and the rear surface is attached to the rear wall of the water-cooled pump 1129. When the water-cooled pump 1129 works, the heat generated by the mirror surface transmitter 18 is carried by the water flow of the water-cooled pump 1129 to form cooling.

[0022] Further, the partition bottom plate 1112 is made of stainless steel plate and is bent at one-third of the partition bottom plate 1112 to form a bottom plate groove 11121, and the height of the partition bottom plate 1112 is staggered to fix the ultraviolet differential gas measurement optical module 1121.

[0023] Further, the water-cooled fan 1113 mainly includes a fan 11131, a water-cooled heat dissipation air duct 11132, and a water-cooled pipe 11133, which are connected to form a circulation pipe under the action of the water-cooled pump 1129, so as to accelerate the heat dissipation of the frame body 111 and keep the internal temperature constant.

[0024] Further, the water-cooled pipe 11133 is arranged on one side of the partition bottom plate 1112 and at least two water-cooled pipes are arranged to connect the water-cooled heat dissipation air duct 11132 and the water-cooled pump 1129 to form a circulation pipe.

[0025] Further, the ultraviolet differential gas measurement optical module 1121 also includes a quantum cascade ultraviolet detector, and the detection sensitivity is multiplied when detecting low solubility NOx under the cooperation of the two, and the minimum detection solubility of NO and NO2 can reach 2ppm.

[0026] Further, the proportional valve 1124 is provided with at least two proportional valves, one of which cooperates with the three-way electromagnetic valve to analyze and detect SF6 purity, NO / NO2, N2O, O2, H2S, CO, H2, etc. under the control of the flow rate.

[0027] Further, the other proportional valve 1124 in the proportional valve 1124 is processed by the humidifier in the mirror surface humidifying assembly 1117 through the three-way valve, enters the mirror surface gas chamber, detects the decomposition products in the mirror surface transmitter 18, and is discharged from the air outlet 1163 under the cooperation of the flow control after completion.

[0028] Furthermore, the purity module 1119 adopts the SGA-100 series, which uses advanced gas sensing technology to achieve high-precision gas concentration detection and can identify PPM-level gas concentrations to ensure detection accuracy.

[0029] Furthermore, the flow sensor and the flow monitoring device in the bracket 1116 are mainly used to ensure the verification and calibration of the gas flow meter and the gas flow pump.

[0030] Furthermore, the pressure sensor 11181 is mainly used to measure the gas pressure inside the gas detection equipment to ensure that the equipment operates within the normal working range. By monitoring the changes in air pressure in real time, the sensor can provide accurate data feedback to help the equipment to automatically adjust.

[0031] Furthermore, the main function of the pressure regulating valve 11183 is to automatically adjust the gas pressure to ensure that it remains within the set range, thereby ensuring the stability and safety of the system.

[0032] As attached Figure 6 , Attachment Figures 10-11 As shown; Among them, a bottom plate groove 11121 is formed on the partition bottom plate 1112, and an ultraviolet differential gas measurement optical module 1121 is installed at the bottom plate groove 11121. A module fixing shell 11211 is provided in the ultraviolet differential gas measurement optical module 1121, and an even number of anti-vibration fixing seats 11212 are installed below the module fixing shell 11211. An output exhaust valve 11213 is connected to the rear of the module fixing shell 11211. A second air outlet 11214 and a second air inlet 11215 are respectively provided on the module fixing shell 11211, and a temperature control and signal processing board group 11216 is provided outside the module fixing shell 11211. A connecting fixing seat 112129 is provided in the anti-vibration fixing seat 11212, an insulating rubber column 112128 is installed on the connecting fixing seat 112129, a support pad 112121 is provided on the top of the insulating rubber column 112128, an even number of connecting sleeve locking bolts 112124 are installed on the surface of the support pad 112121, and insulating pads 112122 are nested on the connecting sleeve locking bolts 112124, a magnetic ring 112123 is fixed under the support pad 112121, and an electromagnetic coil 112125 is provided under the magnetic ring 112123. An even number of bending support frames 112126 are fixed to the inner wall of the electromagnetic coil 112125, and a lower support locking frame 112127 is connected to the bottom of the bending support frame 112126.

[0033] Furthermore, at least four anti-vibration fixing seats 11212 are provided, which are fixed below the module fixing shell 11211 , penetrated by the connecting sleeve locking bolt 112134 and cooperated with the insulating pad 112122 to support the module fixing shell 11211 .

[0034] Further, the connecting fixing seat 112129 is fixed on the surface of the partition bottom plate 1112, and the magnetic ring 112123 is fixed below the supporting pad 112121 by using a permanent magnet, and the non-contact suspension can be realized by adjusting the coil current to adjust the energized coil 112125, and the suspension gap is 0.1-0.5mm.

[0035] Further, the temperature control and signal processing board set 11216 is divided into a temperature control main board and a signal processing board, wherein the temperature control main board has a power supply voltage of 24V±0.6V and a peak power of <100W, and the preheating time is 10-15 minutes after power-on.

[0036] Further, the second air outlet 11214 on the module fixing shell 11211 is connected with the output exhaust valve 11213, and the second air inlet 11215 is connected with one of the proportional valves 1124, and the nitrogen and oxygen product detection is realized by the control transmission of the gas proportional valve 1123 into the ultraviolet differential gas measurement optical module 1121, and the humidity compensation can be formed by cooperating with the mirror surface humidifying assembly 1117.

[0037] Further, the bending support frame 112126 adopts a three-point type, one point of which is fixed in the inner wall of the energized coil 112125, one point is embedded on the lower supporting lock frame 112127, and the other point is nested into the sleeve below the supporting pad 112121, and the one nested into the sleeve is movable, which is convenient for the non-contact suspension of the energized coil 112125 and the magnetic ring 112123.

[0038] Further, the energized coil 112125 is controlled by the signal processing board set 11216, and the electric energy is output by the power storage battery 1114, so that the energized coil 112125 realizes the non-contact suspension by adjusting the coil current to adjust the energized coil 112125.

[0039] As shown in the accompanying drawings; Figures 12-13 As shown in the accompanying drawings; Among them, the electrochemical sensor 1123 is provided with a mounting plate 11231, a plurality of sensors 11235 are mounted on the mounting plate 11231, a straight-through connector 11233 is arranged on the sensor 11235, and a gas chamber cover 11234 is nested outside the sensor 11235, and a circuit board 11232 is fixed on the surface of the gas chamber cover 11234.

[0040] Further, the electrochemical sensor 1123 has three electrodes, which are working electrode S, reference electrode R and counter electrode C, oxidation and reduction reactions occur between the counter electrode and the working electrode, and the reference electrode provides a stable voltage, and the input end impedance needs to be as high as 109~1012Ω to avoid current leakage.

[0041] Further, the working electrode S in the electrochemical sensor 1123 outputs a constant current signal through a load resistor, which is sent into a current-voltage conversion circuit for amplification, and finally subjected to RC filtering and output, and sent into a precision AD conversion circuit. The MCU converts it into a digital signal for processing.

[0042] Further, the electrodes in the electrochemical sensor 1123 are all made of gold by a plating process to improve the conductivity and corrosion resistance, thereby indirectly improving the accuracy of the nitrogen oxide decomposition products in detection.

[0043] The specific working principle is as follows: The handle 17 is used for carrying and convenient movement. When reaching the desired position, the handle 17 is swung to make the side pulley 117 connected with the handle 17 slide and displace in the pulley groove 1161, thereby supporting the instrument shell 11. The gas inlet 13 and the gas outlet 1163 are both connected with pipelines. After the power switch 12 is turned on, the built-in storage battery 1114 supplies power to the power supply components in the frame cavity 1111. The decomposition products in the SF6 and N2 mixed gas enter the self-sealing gas inlet connector 11185 through the gas inlet pipeline, and then enter the sleeve terminal connector 11184, which cooperates with the pressure sensor 11181 to monitor the data. The gas is guided to the proportional valve 1124 through the gas inlet tee joint 11182 and the pressure stabilizing valve 11183. One of the proportional valves 1124 measures the purity of SF6 through the tee electromagnetic valve and the purity module 1119. Then, the gas passes through a plurality of electrochemical sensors 1123 in sequence and is detected by the infrared gas sensor 1126. Finally, the gas is discharged from the gas outlet 1163 with the assistance of the flow sensor. When the gas enters the electrochemical sensor 1123, the working electrode S, the reference electrode R, and the counter electrode C cooperate with each other. The MCU converts the signal into a digital signal through a precision AD conversion circuit. The other proportional valve 1124 cooperates with the mirror humidifying assembly 1117 through the tee electromagnetic valve to control the dew point humidity of the entering SF6 mixed gas, thereby buffering the external humidity fluctuation and maintaining the gas humidity around the mirror in a relatively stable range. The water-cooled fan 1113 and the water-cooled pump 1129 form a circulation under the action of the water-cooled pipe 11133, thereby ensuring the constant temperature in the frame body 111, and indirectly improving the accuracy of the nitrogen oxide decomposition products in detection, thereby avoiding the drift caused by the change of environmental factors and the accuracy error.

Claims

1. A SF6, N2 mixed gas detector, characterized in that: The invention comprises a detector (1), wherein an instrument housing (11) is provided in the detector (1), a mirror transmitter (18) is provided on the surface of the instrument housing (11), a frame body (111) is provided in the instrument housing (11), a frame cavity (1111) is formed in the frame body (111), a partition bottom plate (1112) is installed in the frame cavity (1111), a water-cooling fan (1113) is installed on one side of the partition bottom plate (1112), a water-cooling pump (1129) is installed on the other side of the partition bottom plate (1112), a proportional valve (1124) is installed on the lower surface of the partition bottom plate (1112), and a plurality of electrochemical sensors (1123) are provided next to the proportional valve (1124); A base plate groove (11121) is formed on the partition base plate (1112), an ultraviolet differential gas measurement optical module (1121) is installed in the base plate groove (11121), a module fixing shell (11211) is provided in the ultraviolet differential gas measurement optical module (1121), and an even number of anti-vibration fixing seats (11212) are installed below the module fixing shell (11211); A water-cooling heat dissipation duct (11132) is provided in the water-cooling fan (1113), a fan (11131) is installed behind the water-cooling heat dissipation duct (11132), an even number of water-cooling pipes (11133) are connected to the water-cooling heat dissipation duct (11132), a water-cooling pump bracket (11291) is provided at the bottom of the water-cooling pump (1129), and the water-cooling pump bracket (11291) is fixed on the rear surface of the mirror transmitter (18).

2. The SF6 and N2 mixed gas detector according to claim 1, characterized in that: A mounting plate (11231) is provided inside the electrochemical sensor (1123), a plurality of sensors (11235) are mounted on the mounting plate (11231), each of the sensors (11235) is provided with a straight-through connector (11233), an air chamber cover (11234) is nested outside the sensor (11235), and a circuit board (11232) is fixed to the surface of the air chamber cover (11234).

3. The SF6 and N2 mixed gas detector according to claim 1, characterized in that: A connection fixing seat (112129) is provided in the anti-vibration fixing seat (11212), an insulating rubber column (112128) is installed on the connection fixing seat (112129), a support pad (112121) is provided on the top of the insulating rubber column (112128), an even number of connection sleeve lock bolts (112124) are installed on the surface of the support pad (112121), and insulating pads (112122) are nested on the connection sleeve lock bolts (112124), a magnetic ring (112123) is fixed below the support pad (112121), an electromagnetic ring (112125) is provided below the magnetic ring (112123), an even number of bending support frames (112126) are fixed to the inner wall of the electromagnetic ring (112125), and a lower support lock frame (112127) is connected below the bending support frame (112126).

4. The SF6 and N2 mixed gas detector according to claim 3, characterized in that: An output exhaust valve (11213) is connected to the rear of the module fixed shell (11211), a second air outlet (11214) and a second air inlet (11215) are respectively provided on the module fixed shell (11211), and a temperature control and signal processing board group (11216) is provided outside the module fixed shell (11211).

5. The SF6 and N2 mixed gas detector according to claim 1, characterized in that: A 24V control board (1125) is provided above the ultraviolet differential gas measurement optical module (1121), a flow sensor and a bracket (1116) are provided in the frame cavity (1111), a storage battery (1114) is provided in front of the water-cooling fan (1113), a mirror DCDC board (1115) is installed on one side of the storage battery (1114), a main board (1120) is installed on the other side of the storage battery (1114), and a mirror humidification group is provided below the flow sensor and the bracket (1116). The mirror humidifying component (1117) is provided with an air inlet module (1118) next to the mirror humidifying component (1117), a purity module (1119) is provided next to the air inlet module (1118), an air pump (1122) is provided next to the electrochemical sensor (1123), an infrared gas sensor (1126) is provided on one side of the air pump (1122), an air pump solenoid valve (1127) is provided on the other side of the air pump (1122), and a three-way solenoid valve (1128) is provided above the water cooling pump (1129).

6. The SF6 and N2 mixed gas detector according to claim 5, characterized in that: A charge management board (11141) is installed on the storage battery (1114), a pressure sensor (11181) is provided in the air inlet module (1118), an air inlet three-way joint (11182) is connected below the pressure sensor (11181), a ferrule terminal joint (11184) is connected below the air inlet three-way joint (11182), a pressure regulating valve (11183) is connected next to the ferrule terminal joint (11184), and a self-sealing air inlet joint (11185) is connected below the ferrule terminal joint (11184).

7. The SF6 and N2 mixed gas detector according to claim 4, characterized in that: The air inlet module (1118) cooperates with the proportional valve (1124), wherein one of the proportional valves (1124) is connected to the three-way solenoid valve (1128), wherein another of the proportional valves (1124) is connected to another of the mirror humidifying components (1117), and the storage battery (1114) supplies power to the electronic components arranged in the frame cavity (1111).

8. The SF6 and N2 mixed gas detector according to claim 6, characterized in that: The air inlet three-way connector (11182) is connected to the mirror humidifying assembly (1117) through a pipeline, the mirror DCDC board (1115) is electrically coordinated with the mirror transmitter (18), and the charging management board (11141) is electrically coordinated with the storage battery (1114).

9. The SF6 and N2 mixed gas detector according to claim 5, characterized in that: The surface of the instrument housing (11) is provided with a display screen (14), a power switch (12) is provided in front of the instrument housing (11), an air inlet (13) is provided below the power switch (12), a USB socket (15) is provided below the mirror transmitter (18), an undervoltage lamp (16) is provided next to the USB socket (15), a handle (17) is connected to the instrument housing (11), and a rear cover (11) is provided at the rear of the frame body (111). 2), a fan cover (115) is fixed on the surface of the rear cover (112), an RS458458 (114) is provided on the surface of the rear cover (112), a grounding port (113) is provided next to the RS458458 (114), side covers (116) are installed on both sides of the frame body (111), side pulleys (117) are installed in the side covers (116), and upper and lower covers (118) are installed on the upper and lower parts of the frame body (111).

10. The SF6 and N2 mixed gas detector according to claim 9, characterized in that: A pulley groove (1161) is provided in the side cover (116), a charging port (1162) is provided on one of the side cover plates (116), and an air outlet (1163) is provided next to the charging port (1162). The upper and lower cover plates (118) are divided into an upper cover plate and a lower cover plate, and both the upper and lower cover plates (118) are provided with a rubber strip (1182). A heat conduction groove (1181) is provided on the lower cover plate of the upper and lower cover plates (118). The pulley groove (1161) is slidably matched with the side pulley (117), and the side pulley (117) is connected to the handle (17).

Images