Movable power supply device for safety production detection and working method thereof

Abstract

The invention relates to a mobile power supply device for safety production detection and a working method thereof, and belongs to mobile power generation equipment for testing. According to the mobile power supply device for safety production detection, the outer part is a shell, a high-pressure gas tank, a lithium battery energy storage module, a miniature booster pump, a pressure reducing and stabilizing system, a flywheel, a generator, a turbine and a controller are arranged in the shell, and a power switch, a jack, an emergency inflating interface, an anti-explosion pressure relief valve, a pressure relief knob, a charging interface, a control button and a screen are arranged on the shell; the high-pressure gas tank is provided with an internal gas inflation connector, a power generation exhaust connector, an external gas inflation connector, an anti-explosion pressure relief connector, a flow limiting valve and a pressure sensor. An electromagnetic clutch is arranged at the end of an output shaft of the turbine and connected with one end of a flywheel shaft, a flywheel is arranged on the flywheel shaft, and the other end of the flywheel shaft is connected with a generator.

Description

TECHNICAL FIELD

[0001] The application relates to a mobile power supply device for safety production detection and a working method thereof, and belongs to the field of mobile power generation equipment for testing. BACKGROUND

[0002] In the field of safety production detection, various impact tests on power can well find the deterioration of various protection systems, especially in the test of relay protection of the power system, the tester applies a short-time impact to the switch cabinet to simulate a fault and tripping scene. Such a test is carried out in a distribution room, which will affect the power supply of the distribution room, and the tester will be powered off when the power is off.

[0003] Therefore, an additional AC power supply is often needed in such detection, and the traditional mobile power supply (uninterruptible power supply, UPS) is easy to cause damage or performance degradation of internal power semiconductor elements (transistor modules) under instantaneous impact in such test, resulting in frequent damage of such power supply equipment.

[0004] The prior art cannot completely solve such problems, so that the traditional battery mobile power supply device has defects in such safety production detection occasions. SUMMARY

[0005] In view of the above problems, the application provides a mobile power supply device for safety production detection and a working method thereof, which realizes stable power supply with a stable output voltage of 230V+ / -5V and a stable frequency of 50Hz+ / -0.1Hz under transient working conditions of the test of relay protection, and avoids damage of the traditional UPS under a large current impact.

[0006] To achieve the above purpose, the technical scheme adopted by the application is: The mobile power supply device for safety production detection according to the application is characterized in that the device has a shell, a high-pressure gas tank, a lithium battery energy storage module, a micro booster pump, a pressure reduction and stabilization system, a flywheel, a generator, a turbine and a controller built-in, and the shell is provided with a power switch, a jack, an emergency inflation interface, an anti-explosion pressure relief valve, a pressure relief knob, a charging interface, a control button and a screen. The high-pressure gas tank is provided with an internal inflation interface, a power generation exhaust interface, an external inflation interface, an anti-explosion pressure relief interface, a flow limiting valve and a pressure sensor, the internal inflation interface is connected to the micro booster pump, the power supply end of the micro booster pump is connected to the battery pack and the charging interface, the power generation exhaust interface is connected to the nozzle through the air pipe, the nozzle faces the turbine, and the output shaft of the turbine is connected to the air-driven generator. An electromagnetic clutch is arranged at the end of the output shaft of the turbine to connect one end of the flywheel shaft, a flywheel is arranged on the flywheel shaft, and the other end of the flywheel shaft is connected to the generator, a turbine speed sensor is arranged on the turbine, and a flywheel speed sensor is arranged on the flywheel. The turbine speed sensor, the flywheel speed sensor, the pressure sensor, the control button access controller input signal bus, the control connection of the micro supercharger pump, the control connection of the high-voltage brushless motor control module, and the control connection of the electromagnetic clutch; The relay control coil, the screen, the photoelectric sensor, and the access controller output signal bus; The output voltage connection of the high-voltage brushless motor control module accesses the connection jack, the jack is provided with a photoelectric sensor, the control connection of the pneumatic generator accesses the high-voltage brushless motor control module, the control connection is provided with a relay contact switch, and the relay contact switch and the relay coil are connected in association.

[0007] According to the portable power supply device for safety production detection, the high-pressure gas tank has a volume of 0.5 liters, an internal 7075 aluminum alloy seamless liner, a wall thickness of 1.5 mm, an outer layer of T700 carbon fiber prepreg, 12 layers of fibers cured at 280°C, and fiber arrangement angles of ±15° and ±45° alternately distributed.

[0008] According to the portable power supply device for safety production detection, the turbine is an Inconel718 turbine with a diameter of 20 mm and 12 blades, the blade leading edge thickness is 0.1 mm, the pneumatic generator is an NdFeB permanent magnet brushless generator, the generator stator winding is made of 180 oxygen-free copper wires and is wound into shape and cured with epoxy resin, the output power is 500W, the frequency is 50Hz, the voltage is 230V (RMS), the frequency deviation is not more than ±0.1Hz, and the voltage deviation is not more than ±5V.

[0009] According to the portable power supply device for safety production detection, the gas pipe connected to the power generation exhaust interface is provided with a first-stage pressure reducing valve, a nozzle is arranged behind the first-stage pressure reducing valve, the nozzle is an iTi shape memory alloy micro variable cross-section nozzle, the first-stage pressure reducing valve is a 316L stainless steel diaphragm type pressure reducing valve, 20MPa gas is stabilized to 2MPa±0.05MPa, and the nozzle dynamically adjusts the effective opening of the nozzle from 0.3mm to 0.6mm within 1ms under the driving of 0~200mA direct current.

[0010] According to the portable power supply device for safety production detection, the first-stage pressure reducing valve has an outer diameter of 20mm and a length of 50mm, is internally provided with a 316L diaphragm with a diameter of 10mm and a thickness of 0.1mm, and is provided, above, with an InconelX750 spring and a conical valve core, the spring constant is 1000N / m, and the conical top angle is 60°. The nozzle body is made of Inconel 718 alloy, with an outer diameter of 8 mm and a length of 20 mm, and a 0.6 mm diameter sapphire orifice plate is embedded inside; the NiTi coil has a wire diameter of 0.1 mm, is wound for 10 turns, has an initial length of 5 mm, has a composition of Ni 54.5 wt% and Ti 45.5 wt%, has an austenitic phase transformation temperature of 40±1℃ after heat treatment, and has an opening of 0.6 mm without current, and the opening is reduced to 0.3 mm when a current of 200 mA is applied.

[0011] According to the mobile power supply device for safety production detection, the turbine is an Inconel 718 turbine with a diameter of 20 mm, 12 blades, and a blade leading edge thickness of 0.1 mm; the generator is a NdFeB permanent magnet brushless generator that maintains the rated speed; the generator stator winding is made of 180 oxygen-free copper wires and is wound into a shape and cured with epoxy resin; the output power is 500 W, the frequency is 50 Hz, the voltage is 230 V (RMS), the frequency deviation is not more than ±0.1 Hz, and the voltage deviation is not more than ±5 V. The turbine bearing is a ceramic ball bearing, and the moment of inertia is not more than (1.5±0.1)×10^-5 kg·m².

[0012] According to the mobile power supply device for safety production detection, the micro booster pump is a titanium alloy piston and PCTFE sealing ring structure, with a power of 150 W, driven by a 48V lithium iron phosphate battery pack, and can increase the pressure of the gas storage tank to the rated pressure, with a gas volume sufficient to stably drive the turbine at the rated power for more than 20 seconds; the gas inlet end is provided with an air inlet filter screen and a drying chamber, and the drying chamber is provided with chemical drying agents.

[0013] According to the mobile power supply device for safety production detection, the shell is made of carbon fiber reinforced epoxy resin composite plate material, and is formed by integral pressure molding; the upper end is provided with a handle, and the inside is fixed with various modules by stainless steel bolts and is damped by silica gel damping pads.

[0014] According to the mobile power supply device for safety production detection, the flow limiting valve is arranged at the rear of the shell and is provided with a multi-hole silencer.

[0015] The working method of the mobile power supply device for safety production detection comprises the following steps, 1) After the device is turned on, the system is preheated and the gas pump is started to boost the pressure, the pressure of the high-pressure gas tank is raised to the rated working pressure by the built-in micro booster pump, the jack is connected to the relay protection tester on the spot, and the trigger photoelectric sensor is inserted to make the equipment enter the standby mode; 2) The high-voltage brushless motor control module is activated in standby mode, the generator is linked to the flywheel to the rated speed of the generator, the high-voltage brushless motor control module provides 230v / 50HZ alternating current output, and the current limiting is 2A; 3) If the flywheel speed drops more than 2%, start the electromagnetic valve to provide high pressure gas, the nozzle will dynamically adjust the start Inconel718 turbine to boost the speed within 1ms, the electromagnetic clutch is closed after the turbine is synchronized with the flywheel, and the high-pressure brushless motor control module is disconnected; 4) The turbine maintains the rated speed of the generator and outputs 500W, 50Hz power. When the relay protection tester applies a large current impact load change, the controller adjusts the nozzle opening within 1ms to maintain the stable frequency and voltage of the generator through the turbine.

[0016] The application can meet the requirement of providing 10 measurement outputs for the relay protection tester within 5 minutes.

[0017] The application completely solves the problem of power supply in the scene of on-site safety inspection, and avoids the damage of traditional instruments caused by impact from the source.

[0018] The body is provided with an emergency inflation interface, which can be connected to a nitrogen cylinder through a hard metal high-pressure pipeline to inject high-pressure nitrogen for emergency use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The whole machine appearance modeling structure of the application Figure One , Figure 2 The whole machine appearance modeling structure of the application Figure Two , Figure 3 It is a gas pressure power generation principle structure diagram of the application, Figure 4 It is a controller wiring structure diagram of the application.

[0020] Reference signs: 1 shell, 11 power switch, 12 jack, 13 emergency inflation interface, 14 explosion-proof pressure relief valve, 15 pressure relief knob, 16 charging interface, 17 control button, 18 screen, 19 controller, 2 high-pressure gas tank, 21 pressure sensor, 22 internal inflation interface, 23 power generation exhaust interface, 24 external inflation interface, 25 explosion-proof pressure relief interface, 26 flow limiting valve, 27 multi-hole silencer, 28 electromagnetic valve, 3 lithium battery energy storage module, 4 micro booster pump, 5 first-stage pressure reducing valve, 6 nozzle, 7 flywheel, 8 generator, 9 turbine, 10 electromagnetic clutch. DETAILED DESCRIPTION

[0021] The specific content of the application will be further described below: The application is a mobile power supply device for safety production detection, and the outside is a shell 1, as shown in Figure 1 The shell 1 is provided with a power switch 11, a jack 12, an emergency inflation interface 13, an explosion-proof pressure relief valve 14, a pressure relief knob 15, a charging interface 16, a control button 17 and a screen 18.

[0022] The casing of this device is as follows Figure 2 It integrates a high-pressure gas tank (2), a lithium battery energy storage module (3), a micro booster pump (4), a flywheel (7), a generator (8), a turbine (9), and a controller. The generator is a brushless motor with dual states: passive rotation generating electricity to supply external power, and passive rotation receiving external voltage. The high-voltage brushless motor control module controls the switching between the generator's two states: generating electricity and voltage-driven rotation.

[0023] The high-pressure gas tank 2 is equipped with an internal inflation port 22, a generator exhaust port 23, an external inflation port 24, an explosion-proof pressure relief port 25, a flow limiting valve 26, and a pressure sensor 21. The internal inflation port 22 is connected to a micro booster pump 4. The power supply terminal of the micro booster pump 4 is connected to a battery pack and a charging port 16. The generator exhaust port 23 is connected to a nozzle 6 through a gas pipe. The nozzle 6 faces the turbine 9. The output shaft of the turbine 9 is connected to a generator.

[0024] An electromagnetic clutch 10 is installed at the output shaft end of turbine 9, connecting one end of the flywheel shaft. A flywheel 7 is installed on the flywheel shaft, and the other end of the flywheel shaft is connected to generator 8. Turbine 9 is equipped with a turbine speed sensor, and flywheel 7 is equipped with a flywheel speed sensor. The turbine speed sensor, flywheel speed sensor, pressure sensor 21, and control button 17 are connected to the controller's input signal bus. The control wiring of the micro booster pump 4, the control wiring of the high-voltage brushless motor control module, the control wiring of the electromagnetic clutch 10, the relay control coil, screen 18, photoelectric sensor, and the controller's output signal bus are connected. The output voltage wiring of the high-voltage brushless motor control module is connected to the connection socket 12, which is equipped with a photoelectric sensor. The control wiring of the pneumatic generator is connected to the high-voltage brushless motor control module, and the control wiring is equipped with a relay contact switch. The relay contact switch and the relay coil are interconnected.

[0025] Specifically, the housing 1 is made of carbon fiber reinforced epoxy resin composite board, molded in one piece, with a handle at the top. The internal modules are fixed with stainless steel bolts and vibration is damped by silicone damping pads. The flow limiting valve 26 is located at the rear of the housing and is equipped with a multi-hole silencer.

[0026] Among them, the high-pressure gas tank 2 has a volume of 0.5 liters, with a seamless 7075 aluminum alloy inner liner and a wall thickness of 1.5 mm. The outer layer is wrapped with T700 carbon fiber prepreg, which is cured at 280℃ and has a total of 12 layers of fiber. The fiber arrangement angle is ±15° and ±45° alternately distributed.

[0027] The gas pipe connected to the generator exhaust port 23 is equipped with a first-stage pressure reducing valve 5. After the first-stage pressure reducing valve 5 is a nozzle 6. The nozzle 6 is an iTi shape memory alloy miniature variable cross-section nozzle. The first-stage pressure reducing valve 5 is a 316L stainless steel diaphragm pressure reducing valve, which stabilizes the 20MPa gas pressure to 2MPa±0.05MPa. The nozzle 6 can dynamically adjust the effective opening of the nozzle 6 from 0.3mm to 0.6mm within 1ms under the drive of 0~200mA DC current.

[0028] The first-stage pressure reducing valve 5 has an outer diameter of 20mm and a length of 50mm. Inside, there is a 316L diaphragm with a diameter of 10mm and a thickness of 0.1mm. Above it is an Inconel X750 spring and a conical valve core with a spring constant of 1000N / m and a cone apex angle of 60°. Nozzle 6 is made of Inconel 718 alloy, with an outer diameter of 8mm and a length of 20mm. It has a 0.6mm diameter sapphire plate embedded inside, a NiTi coil wire with a diameter of 0.1mm, 10 turns, an initial length of 5mm, and a composition of 54.5wt% Ni and 45.5wt% Ti. After heat treatment, the austenitic phase transformation temperature is 40±1℃. When there is no current, the opening of nozzle 6 is 0.6mm. When a 200mA current is applied, the opening of nozzle 6 decreases to 0.3mm.

[0029] Turbine 9 is an Inconel 718 turbine with a diameter of 20mm, 12 blades, and a blade leading edge thickness of 0.1mm. Generator 8 is an NdFeB permanent magnet brushless generator that maintains its rated speed. The generator stator winding is made of 180 oxygen-free copper wires wound together and cured with epoxy resin. The output power is 500W, the frequency is 50Hz, and the voltage is 230VRMS, with a frequency deviation not exceeding ±0.1Hz and a voltage deviation not exceeding ±5V. The turbine bearing is a ceramic ball bearing with a moment of inertia not exceeding (1.5±0.1)×10^-5 kg·m².

[0030] Once the flywheel speed sensor detects that the flywheel has reached its rated speed, the battery-powered generator maintains flywheel operation. The drive module maintains the flywheel speed with a small current, and the speed is monitored in a closed-loop manner by a speed sensor, always maintaining the speed within ±0.5% of the generator's rated speed. The flywheel is made of nickel alloy and, in a 500W power output model, should be able to maintain power output for more than 1 second, and should be compatible with the high-voltage brushless motor drive control module model. In standby mode, when the flywheel speed sensor detects a flywheel speed drop rate exceeding 2%, the solenoid valve opens, and high-pressure gas drives the Inconel 718 turbine to increase its speed. When the difference between the turbine speed and the flywheel speed is less than 0.6%, the electromagnetic clutch engages, connecting the flywheel and the turbine, and both rotate synchronously. After the electromagnetic clutch engages, the relay disconnects the connection between the generator and the high-voltage brushless motor control module. When the plug is detected to be unplugged, the high-voltage brushless motor drive control module controls the generator to reverse brake, braking the flywheel in reverse for 10 seconds, allowing the generator to recover energy.

[0031] The miniature booster pump 4 has a titanium alloy piston and PCTFE sealing ring structure, with a power of 150W. It is driven by a 48V lithium iron phosphate battery pack and boosts the pressure of the air tank to the rated pressure. The air volume is sufficient to stably drive the turbine to its rated power for more than 20 seconds. The air inlet end is equipped with an air filter and a drying chamber, and the drying chamber contains a chemical drying agent.

[0032] The lithium battery energy storage module consists of 16 lithium iron phosphate cells connected in series, with a total capacity of 4.2Ah. The BMS has a cell balancing accuracy of 3mV and a temperature measurement accuracy of 1℃.

[0033] The housing 1 is made of carbon fiber reinforced epoxy resin composite board, and is integrally molded. It has a handle at the top, and the modules are fixed internally with stainless steel bolts and vibration damping pads with silicone damping pads. The flow limiting valve 26 is located at the rear of the housing and is equipped with a multi-hole silencer.

[0034] The present invention provides a method for operating a portable power supply device for safety production monitoring, comprising the following steps: 1) After the device is turned on, the high-voltage brushless motor control module controls the lithium battery energy storage module to provide power to drive the generator as the motor to rotate. The system preheats and starts the air pump to boost the pressure. The pressure of the high-pressure air tank (2) is increased to the rated working pressure through the built-in micro booster pump (4). The socket (12) is connected to the relay protection tester on site, and the trigger photoelectric sensor is inserted to make the device enter the standby mode. 2) In standby mode, the high voltage brushless motor control module remains active. The high voltage brushless motor control module drives the generator (8) to rotate, maintaining the rated speed of the generator (8) and the flywheel (7). The high voltage brushless motor control module provides 230V / 50HZ AC power output with a current limit of 2A. 3) If the speed of the flywheel (7) drops by more than 2%, the solenoid valve is activated to provide high-pressure gas. The nozzle (6) will dynamically adjust and activate the Inconel 718 turbine (9) within 1ms to increase the speed. When the speed difference between the turbine (9) and the flywheel (7) is less than 0.6%, the electromagnetic clutch (10) closes, the flywheel and the turbine are connected, and they rotate synchronously. The turbine maintains the operation of the flywheel and the generator. The high-voltage brushless motor control module and the electromagnetic clutch are mutually exclusive. When the electromagnetic clutch is closed, the high-voltage brushless motor control module is disconnected from the generator. 4) During the high-power discharge phase, the turbine (9) maintains the rated speed of the generator (8) and outputs 500W, 50Hz power for more than 2 seconds. After the speed of the flywheel (7) stabilizes for 3 seconds, the electromagnetic clutch (10) disengages and the generator (8) and flywheel (7) are driven by the high-voltage brushless motor control module to maintain the rated speed.

[0035] This invention is specifically designed for powering relay protection testers in safety production testing, completely solving the power supply problem in on-site safety inspection scenarios and avoiding the problem of traditional instruments being easily damaged by impact from the source.

Claims

1. A portable power supply device for safety production monitoring, characterized in that, The exterior is a shell (1), and the interior contains a high-pressure gas tank (2), a lithium battery energy storage module (3), a micro booster pump (4), a flywheel (7), a generator (8), a turbine (9) and a controller. The shell (1) is equipped with a power switch (11), a socket (12), an emergency air inlet (13), an explosion-proof pressure relief valve (14), a pressure relief knob (15), a charging interface (16), a control button (17) and a screen (18). The high-pressure gas tank (2) is equipped with an internal inflation port (22), a power generation and exhaust port (23), an external inflation port (24), an explosion-proof pressure relief port (25), a flow limiting valve (26), and a pressure sensor (21). The internal inflation port (22) is connected to a micro booster pump (4). The power supply of the micro booster pump (4) is connected to a battery pack and a charging port (16). The power generation and exhaust port (23) is connected to a nozzle (6) through a gas pipe. The nozzle (6) faces the turbine (9). The output shaft of the turbine (9) is connected to a generator. An electromagnetic clutch (10) is provided at the output shaft end of the turbine (9) to connect one end of the flywheel shaft. A flywheel (7) is provided on the flywheel shaft. The other end of the flywheel shaft is connected to the generator (8). A turbine speed sensor is provided on the turbine (9), and a flywheel speed sensor is provided on the flywheel (7). The turbine speed sensor, flywheel speed sensor, pressure sensor (21), and control button (17) are connected to the input signal bus of the controller. The control wiring of the micro booster pump (4), the control wiring of the high-voltage brushless motor control module, the control wiring of the electromagnetic clutch (10), the relay control coil, the screen (18), the photoelectric sensor, and the output signal bus of the controller are connected. The output voltage wiring of the high-voltage brushless motor control module is connected to the connection socket (12). The socket (12) is equipped with a photoelectric sensor. The control wiring of the pneumatic generator is connected to the high-voltage brushless motor control module. The control wiring is equipped with a relay contact switch. The relay contact switch and the relay coil are connected in a coordinated manner.

2. The portable power supply device for safety production monitoring according to claim 1, characterized in that, The high-pressure gas tank (2) has a volume of 0.5 liters, with a seamless 7075 aluminum alloy inner liner and a wall thickness of 1.5 mm. The outer layer is wrapped with T700 carbon fiber prepreg, which is cured at 280°C and has a total of 12 layers of fiber. The fiber arrangement angle is ±15° and ±45°, which are alternately distributed.

3. The portable power supply device for safety production monitoring according to claim 1, characterized in that, The gas pipe connected to the power generation exhaust port (23) is equipped with a first-stage pressure reducing valve (5). After the first pressure reducing valve (5) is a nozzle (6). The nozzle (6) is an iTi shape memory alloy micro variable cross-section nozzle. The first-stage pressure reducing valve (5) is a 316L stainless steel diaphragm pressure reducing valve, which stabilizes the 20MPa gas to 2MPa±0.05MPa. The nozzle (6) dynamically adjusts the effective opening of the nozzle (6) from 0.3mm to 0.6mm within 1ms under the drive of 0~200mA DC current.

4. The portable power supply device for safety production monitoring according to claim 4, characterized in that, The first-stage pressure reducing valve (5) has an outer diameter of 20mm and a length of 50mm. It is equipped with a 316L diaphragm with a diameter of 10mm and a thickness of 0.1mm inside. Above it is an Inconel X750 spring and a conical valve core with a spring constant of 1000N / m and a cone apex angle of 60°. The nozzle (6) is made of Inconel 718 alloy with an outer diameter of 8 mm and a length of 20 mm. It has a 0.6 mm diameter sapphire plate embedded inside. The NiTi coil has a wire diameter of 0.1 mm, is wound with 10 turns, has an initial length of 5 mm, and has a composition of 54.5 wt% Ni and 45.5 wt% Ti. After heat treatment, the austenitic phase transformation temperature is 40 ± 1 °C. When there is no current, the opening of the nozzle (6) is 0.6 mm. When a 200 mA current is applied, the opening of the nozzle (6) decreases to 0.3 mm.

5. The portable power supply device for safety production monitoring according to claim 1, characterized in that, The turbine (9) is an Inconel 718 turbine with a diameter of 20mm, 12 blades, and a blade leading edge thickness of 0.1mm. The generator (8) is an NdFeB permanent magnet brushless generator that maintains the rated speed. The generator stator winding is made of 180 oxygen-free copper wires wound together and cured with epoxy resin. The output power is 500W, the frequency is 50Hz, and the voltage is 230V (RMS). The frequency deviation does not exceed ±0.1Hz, and the voltage deviation does not exceed ±5V. The turbine bearing is a ceramic ball bearing with a rotational inertia of no more than (1.5±0.1)×10^-5kg·m².

6. The portable power supply device for safety production monitoring according to claim 1, characterized in that it is miniature. The booster pump (4) is a titanium alloy piston and PCTFE sealing ring structure with a power of 150W. It is driven by a 48V lithium iron phosphate battery pack, which boosts the pressure of the gas tank to the rated pressure. The gas volume meets the requirement of stable driving the turbine rated power for more than 20 seconds. The air inlet end is equipped with an air filter and a drying chamber, and the drying chamber contains chemical drying agents.

7. The portable power supply device for safety production monitoring according to claim 1, characterized in that, The shell (1) is made of carbon fiber reinforced epoxy resin composite board, and is integrally molded. It has a handle at the top, and the internal modules are fixed with stainless steel bolts and vibration is reduced by silicone damping pads.

8. The portable power supply device for safety production monitoring according to claim 1, characterized in that, The flow limiting valve (26) is located at the rear of the housing and is equipped with a multi-hole silencer.

9. A method of operating the portable power supply device for safety production monitoring as described in claim 1, characterized in that, Includes the following steps, 1) After the device is turned on, the system preheats and starts the air pump to boost the pressure. The pressure of the high-pressure air tank (2) is increased to the rated working pressure through the built-in micro booster pump (4). The socket (12) is connected to the relay protection tester on site, and the trigger photoelectric sensor is inserted to make the device enter the standby mode. 2) In standby mode, the high voltage brushless motor control module remains active. The high voltage brushless motor control module drives the generator (8) to rotate, maintaining the rated speed of the generator (8) and the flywheel (7). The high voltage brushless motor control module provides 230V / 50HZ AC power output with a current limit of 2A. 3) If the speed of the flywheel (7) drops by more than 2%, the solenoid valve is activated to provide high-pressure gas. The nozzle (6) will dynamically adjust and activate the Inconel 718 turbine (9) within 1ms to increase the speed. When the speed difference between the turbine (9) and the flywheel (7) is less than 0.6%, the electromagnetic clutch (10) closes, the flywheel and the turbine are connected, and they rotate synchronously. The turbine maintains the operation of the flywheel and the generator. The high-voltage brushless motor control module and the electromagnetic clutch are mutually exclusive. When the electromagnetic clutch is closed, the high-voltage brushless motor control module is disconnected from the generator. 4) During the high-power discharge phase, the turbine (9) maintains the rated speed of the generator (8) and outputs 500W, 50Hz power for more than 2 seconds. After the speed of the flywheel (7) stabilizes for 3 seconds, the electromagnetic clutch (10) disengages and the generator (8) and flywheel (7) are driven by the high-voltage brushless motor control module to maintain the rated speed.

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