Intelligent protection device and explosion-proof method for graphitization furnace

Abstract

An intelligent protection device and explosion-proof method for a graphitization furnace, the intelligent protection device comprising an explosion-proof pipe (2) connected to the graphitization furnace (1), an explosion-proof plate (3), a spray tower (4) connected to the explosion-proof pipe (2), an anti-reverse mechanism (5) arranged at the outlet of the explosion-proof pipe (2), a thermal nozzle (6) and an atomizing nozzle (7) located in the spray tower (4), a fire water supply system (8) and a control valve (9), an inert gas thermal nozzle (10) arranged in the explosion-proof pipe (2), and a dry powder explosion suppression system (11) connected to the explosion-proof pipe (2). The explosion-proof control process comprises the following steps: when the pressure in the graphitization furnace reaches the bursting pressure of the explosion-proof plate, the explosion-proof plate explodes, the graphitization furnace is depressurized through the explosion-proof plate, the explosion-proof pipe and the anti-reverse mechanism, and the inert gas thermal nozzle, the dry powder explosion suppressor and the atomizing nozzle are opened.

Description

Technical Field

[0001] The present invention relates to the technical field of graphitization furnaces, and in particular to an intelligent protection device for a graphitization furnace. The present invention also relates to an explosion-proof method for a graphitization furnace. Background Art

[0002] The graphitization furnace is a kind of equipment used in the chemical field, usually used for graphitization of materials such as polyacrylonitrile carbon fiber, further removing nitrogen, oxygen, hydrogen and other elements, and converting the fiber from a chaotic layer structure to a graphite-like structure. The working temperature is as high as 2800℃, the heating rate is greater than 60 degrees per hour, and it is in an inert gas atmosphere with a slight positive pressure of 0.1~0.4MPa. Under normal operating conditions, the furnace body pressure stabilization system can stabilize the pressure in the furnace, but when water leakage or material blockage occurs in the graphitization furnace, the gas pressure in the furnace increases sharply. At this time, the furnace body pressure stabilization system fails, and the high-pressure and high-temperature materials in the furnace urgently need a discharge channel, otherwise it will cause greater risks.

[0003] CN203529940U discloses an explosion-proof device for a graphitization furnace, including a high-temperature furnace, a cylinder, a steel plate, and a spring. The high-temperature furnace is located outside the explosion-proof device, the cylinder is located inside the high-temperature furnace, the steel plate is connected to the cylinder, and the spring is connected to the steel plate. A stainless steel spring and a stainless steel plate are placed in a stainless steel cylinder, and the stainless steel cylinder is fixed on the high-temperature furnace, and the stainless steel cylinder is connected to the high-temperature furnace. When the positive pressure in the furnace is greater than 0.4Mpa, the stainless steel sheet will be lifted up, and the gas will be discharged through the explosion-proof device, which can play a role in rapid pressure relief and decompression, thereby achieving an explosion-proof effect.

[0004] When the explosion-proof device of the existing graphitization furnace is started, high-temperature gas and materials are very likely to be directly ejected, which may cause harm to the user and lead to secondary accidents. Summary of the invention

[0005] The present invention aims to solve at least one defect in the prior art. To this end, the technical problem solved by the present invention is to propose an intelligent protection device for a graphitization furnace and an explosion-proof method for a graphitization furnace, which can effectively realize explosion-proof pressure relief of the graphitization furnace during operation, avoid secondary accidents, and protect the graphitization furnace.

[0006] In order to solve the above technical problems, on the one hand, the intelligent protection device of the graphitization furnace provided by the present invention comprises an explosion-proof pipe connected to the graphitization furnace at the first end, an explosion-proof plate arranged at the inlet of the explosion-proof pipe, a spray tower connected to the other end of the explosion-proof pipe, an anti-reverse mechanism arranged at the outlet of the explosion-proof pipe, a thermal nozzle and an atomizing nozzle located in the spray tower, a fire water supply system for supplying water to the thermal nozzle and the atomizing nozzle, a control valve arranged on the water supply pipe of the fire water supply system to control the water inlet of the atomizing nozzle, an inert gas thermal nozzle arranged in the explosion-proof pipe, an inert gas supply pipe connected to the inert gas thermal nozzle, and a dry powder explosion suppression system connected to the explosion-proof pipe; the dry powder explosion suppression system comprises a pressure sensor for measuring the pressure in the explosion-proof pipe, or / and a flame monitoring sensor for monitoring the flame condition in the explosion-proof pipe, a dry powder explosion suppressor connected to the explosion-proof pipe, and a controller for controlling the opening and closing of the dry powder explosion suppressor, and the pressure sensor and / or the flame monitoring sensor are electrically connected to the controller; the controller is also electrically connected to the control valve.

[0007] As a further improved technical solution, the present invention provides an intelligent protection device for a graphitization furnace, wherein the fire water supply system is a fire gas top pressure water supply system.

[0008] As a further improved technical solution, the present invention provides an intelligent protective device for a graphitization furnace, wherein a steel wire mesh is provided on the top of the spray tower.

[0009] As a further improved technical solution, the present invention provides an intelligent protection device for a graphitization furnace, wherein a lightning rod is provided on the top of the spray tower.

[0010] As a further improved technical solution, the intelligent protection device for the graphitization furnace provided by the present invention, the inert gas thermal nozzle, the thermal nozzle and the atomizing nozzle are all 90° solid cone nozzles.

[0011] As a further improved technical solution, the present invention provides an intelligent protective device for a graphitization furnace, wherein the anti-reverse string mechanism is a self-weight sealing cover, the self-weight sealing cover is hinged to the explosion-relief pipe by a hinge, and a soft felt seal is provided between the end of the explosion-relief pipe near the self-weight sealing cover and the self-weight sealing cover, when the pressure value in the explosion-relief pipe is higher than the set value, the anti-reverse string mechanism is opened, and when the pressure is lower than the set value, the anti-reverse string mechanism is closed.

[0012] In order to solve the above technical problems, on the other hand, the present invention provides an explosion-proof method for a graphitization furnace, an intelligent protection device applied to a graphitization furnace, the intelligent protection device of the graphitization furnace comprising an explosion-proof pipe connected to the graphitization furnace at a first end, an explosion-proof plate arranged at the inlet of the explosion-proof pipe, a spray tower connected to the other end of the explosion-proof pipe, an anti-reverse mechanism arranged at the outlet of the explosion-proof pipe, a thermal nozzle and an atomizing nozzle located in the spray tower, a fire water supply system for supplying water to the thermal nozzle and the atomizing nozzle, and a control device arranged on a water supply pipe of the fire water supply system to control water inlet to the atomizing nozzle. A control valve, an inert gas thermistor disposed in the explosion-proof pipeline, an inert gas supply pipeline connected to the inert gas thermistor, and a dry powder explosion suppression system connected to the explosion-proof pipeline; the dry powder explosion suppression system includes a pressure sensor for measuring the pressure in the explosion-proof pipeline and / or a flame monitoring sensor for monitoring the flame condition in the explosion-proof pipeline, a dry powder explosion suppressor connected to the explosion-proof pipeline, and a controller for controlling the opening and closing of the dry powder explosion suppressor, the pressure sensor and / or the flame monitoring sensor being electrically connected to the controller; the controller is also electrically connected to the control valve; the explosion-proof control process includes the following steps:

[0013] When the pressure in the graphitization furnace reaches the bursting pressure of the explosion-proof disk, the explosion-proof disk explodes, the graphitization furnace is depressurized through the explosion-proof disk, the explosion-relief pipe and the anti-reverse mechanism, and the materials in the graphitization furnace enter the spray tower; when the explosion-proof disk explodes, the temperature in the explosion-relief pipe reaches the opening temperature of the inert gas thermal nozzle, and the inert gas thermal nozzle is opened to spray inert gas into the explosion-relief pipe; when the temperature in the spray tower reaches the opening temperature of the thermal nozzle, the thermal nozzle is opened, and the fire water supply system sprays water into the spray tower through the thermal nozzle; when the pressure sensor detects that the pressure in the explosion-relief pipe increases, or / and the flame monitoring sensor detects that there is a flame in the explosion-relief pipe, the pressure sensor or the flame monitoring sensor sends an instruction to the controller to start the dry powder explosion suppressor, and the dry powder explosion suppressor is turned on; when the controller sends an instruction to start the dry powder explosion suppressor, the controller also sends an opening instruction to the control valve, and after the control valve is opened, water is sprayed into the spray tower through the atomizing nozzle.

[0014] The technical solution provided by the present invention, the explosion-proof disk, the thermal nozzle, and the inert gas thermal nozzle are mechanically opened, which can effectively prevent the hazards caused by misoperation or sensor delay and damage triggering, greatly improve the safety and stability of the graphitization furnace, and provide pressure relief, cooling, and inert environment protection in time in unexpected emergency situations to avoid the occurrence of safety accidents and secondary accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the intelligent protection device of the graphitization furnace in Example 1. Implementation

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like Figure 1 The intelligent protection device of the graphitization furnace shown in the figure comprises an explosion relief pipe 2 connected to the graphitization furnace 1 at the first end, an explosion-proof plate 3 arranged at the inlet of the explosion relief pipe 2, a spray tower 4 connected to the other end of the explosion relief pipe 2, an anti-reverse mechanism 5 arranged at the outlet of the explosion relief pipe 2, a thermal nozzle 6 and an atomizing nozzle 7 located in the spray tower 4, a fire water supply system 8 for supplying water to the thermal nozzle 6 and the atomizing nozzle 7, a control valve 9 arranged on the water supply pipe of the fire water supply system 8 to control the water inlet of the atomizing nozzle 7, and an inert gas thermal gas nozzle arranged in the explosion relief pipe 2 10, an inert gas supply pipeline connected to the inert gas thermistor 10, and a dry powder explosion suppression system 11 connected to the explosion venting pipeline 2; the dry powder explosion suppression system 11 includes a pressure sensor for measuring the pressure inside the explosion venting pipeline 2 and / or a flame monitoring sensor for monitoring the flame condition inside the explosion venting pipeline 2, a dry powder explosion suppressor connected to the explosion venting pipeline 2, and a controller for controlling the opening and closing of the dry powder explosion suppressor, the pressure sensor and / or the flame monitoring sensor are electrically connected to the controller; the controller is also electrically connected to the control valve 9, and the controller can be a PLC, an industrial computer, etc.

[0019] In one embodiment, the inert gas thermal nozzle 10 is arranged at one end of the explosion-proof plate 3 of the explosion-proof pipe 2. The inert gas thermal nozzle 10 is a 90° solid cone nozzle made of 310S stainless steel, and the glass bead destruction temperature at the front end of the nozzle is 80°C. The thermal nozzle 6 is a 90° solid cone nozzle made of 310S stainless steel, and the glass bead destruction temperature at the front end of the nozzle is 80°C. The atomizing nozzle 7 is a 90° solid cone nozzle made of 310S stainless steel. The dry powder explosion suppression system 11 is arranged at two-thirds of the explosion-proof pipe 2. When the high-temperature material passes through the position of the dry powder explosion suppression system 11, the dry powder explosion suppression system 11 is opened, and the dry powder is sprayed into the pipe to suppress and cool the explosion-proof pipe 2. The fire-fighting water supply system 8 adopts a fire-fighting gas top-pressure water supply system. The fire-fighting gas top-pressure water supply system includes components such as a pressure water tank, a control cabinet, a top-pressure gas storage system, and a pressure reduction release device. In the fire-fighting state, compressed gas is filled into the pressure water tank to displace the fire-fighting water in the tank. It can always maintain the fire-fighting rated working pressure in the water supply pipeline and is not easily affected by power outages and gas outages.

[0020] During the operation of the graphitization furnace, when the graphitization furnace 1 fails to maintain its voltage stabilization system due to water leakage or material blockage, when the pressure in the graphitization furnace 1 reaches the bursting pressure of the explosion-proof disc 3, the explosion-proof disc 3 bursts, and the graphitization furnace 1 is depressurized through the explosion-proof disc 3, the explosion-relief pipe 2 and the anti-reverse mechanism 5, and the material in the graphitization furnace 1 enters the spray tower 4. After the explosion-proof disc 3 bursts, the temperature in the explosion-relief pipe 2 reaches the opening temperature of the inert gas thermal nozzle 10, and the inert gas thermal nozzle 10 is opened to spray inert gas into the explosion-relief pipe 2. When the temperature in the spray tower 4 reaches the opening temperature of the thermal nozzle 6, the thermal nozzle 6 is opened, and the fire water supply system 8 sprays water to the spray tower 4 through the thermal nozzle 6. When the pressure sensor detects that the pressure in the explosion-proof pipe 2 increases, or / and the flame monitoring sensor detects that there is a flame in the explosion-proof pipe 2, the pressure sensor or the flame monitoring sensor sends an instruction to the controller to start the dry powder explosion suppressor, and the dry powder explosion suppressor starts; when the controller sends an instruction to start the dry powder explosion suppressor, the controller also sends an opening instruction to the control valve 9. After the control valve 9 is opened, water is sprayed into the spray tower 4 through the atomizing nozzle 7.

[0021] When the explosion-proof plate 3 explodes, the graphitization furnace 1 is directly connected to the explosion-proof pipe 2, and the high-temperature materials and pressure in the furnace are released through the explosion-proof pipe 2. After the high-temperature materials in the furnace enter the explosion-proof pipe 2, the temperature in the explosion-proof pipe 2 exceeds the glass bead destruction temperature of the inert gas thermal nozzle 10, and the glass beads at the front end of the inert gas thermal nozzle 10 explode. The inert gas pipeline connected to the inert gas thermal nozzle 10 is normally open. At this time, the inert gas cools the explosion-proof pipe 2 through the inert gas thermal nozzle 10 to prevent oxygen from entering the graphitization furnace 1, and at the same time provides an inert gas inert protection environment to prevent fire.

[0022] As one of the embodiments, an anti-reverse mechanism 5 is arranged between the explosion relief pipe 2 and the spray tower 4. The anti-reverse mechanism 5 is preferably a self-weight sealing cover. The self-weight sealing cover is hingedly connected to the explosion relief pipe 2. The automatic opening pressure value of the anti-reverse mechanism 5 is designed to be 5MPa (or other design values). A soft felt seal is arranged between the end of the explosion relief pipe 2 near the self-weight sealing cover and the self-weight sealing cover. When the pressure value in the explosion relief pipe 2 is higher than the automatic opening pressure value of the self-weight sealing cover, the self-weight sealing cover is opened. When the explosion-proof plate 3 explodes, the pressure in the explosion relief pipe 2 will be greater than the automatic opening pressure value of the self-weight sealing cover. The self-weight sealing cover is opened. When the pressure in the furnace is released to a value lower than the automatic opening pressure value of the self-weight sealing cover, the self-weight sealing cover is closed by its own gravity to prevent external materials and gases from entering the graphitization furnace 1, thereby protecting the graphitization furnace 1. The anti-reverse mechanism 5 has waterproof, fireproof and gas reverse function.

[0023] The technical solution provided by the present invention is that when the pressure in the graphitization furnace 1 reaches the bursting pressure of the explosion-proof plate 3, the explosion-proof plate 3 explodes and the pressure is released through the explosion-relief pipe 2. At this time, the inert gas thermal nozzle 6, the anti-reverse mechanism 5 and the thermal nozzle 6 are automatically opened. When the pressure sensor detects that the pressure in the explosion-relief pipe increases, or / and the flame monitoring sensor detects that there is a flame in the explosion-relief pipe, the pressure sensor or / and the flame monitoring sensor sends a detection signal to the controller of the dry powder explosion suppression system 11, and the controller sends a signal to open the dry powder explosion suppressor and the control valve 9. The dry powder explosion suppressor is opened to spray dry powder into the explosion-relief pipe, and the control valve 9 opens the atomizing nozzle 7 to spray water mist into the tower. The inert gas enters the explosion-relief pipe 2 through the inert gas thermal nozzle 10 to cool the high-temperature material and provide an inert gas protection environment to prevent fire. After the explosion-proof disc 3 is destroyed, when the pressure in the graphitization furnace 1 is released to a certain extent, the anti-reverse flow mechanism 5 is closed by its own gravity to prevent external materials and air from entering the graphitization furnace 1, thereby protecting the graphitization furnace 1. The explosion-proof disc 3, the anti-reverse flow mechanism 5, the inert gas thermal nozzle 6, and the thermal nozzle 6 are all automatic opening mechanisms without a complex electrical control system. They can be opened normally even in the absence of power, thereby improving the stability of the system.

[0024] As one of the embodiments, four groups of thermal nozzles 6 are provided on the upper part of the spray tower 4. The thermal nozzles 6 adopt solid cone spray nozzles. The glass bead destruction temperature of the thermal nozzles 6 (the opening temperature of the thermal nozzles 6) is 80°C. The fire water supply system 8 connected to the pipe where the thermal nozzles 6 are installed is a fire gas top pressure water supply system, which is a normally open system. The pipe where the thermal nozzles 6 are installed maintains a water pressure of about 1 MPa. When the high-temperature material in the explosion-proof pipe 2 reaches the spray tower 4, the glass beads at the front end of the thermal nozzles 6 explode and spray the high-temperature material to achieve cooling and explosion-proof effects. The gas generated during the spray cooling of the high-temperature material is discharged from the top of the spray tower 4, and the cooled high-temperature material falls into the bottom of the spray tower 4.

[0025] As one of the embodiments, four groups of atomizing nozzles 7 are provided in the middle of the spray tower 4. The atomizing nozzles 7 adopt solid cone spray type nozzles. The atomizing nozzles 7 are connected to the fire water supply system 8 through a pipeline. Two groups of electromagnetic control valves 9 are provided in parallel on the pipeline. The two groups of control valves 9 are one for use and one for backup. The fire water supply system 8 connected to the control valve 9 pipeline is a fire gas top pressure water supply system, which is a normally open system. The water pressure of about 1MPa is continuously maintained in the pipeline. When the pressure sensor detects that the pressure in the explosion relief pipeline increases, or / and the flame monitoring sensor detects that there is a flame in the explosion relief pipeline, the pressure sensor or the flame monitoring sensor sends an instruction to the controller to start the dry powder explosion suppressor, and the dry powder explosion suppressor is turned on; when the dry powder explosion suppressor is turned on, the controller sends an opening instruction to the control valve 9. After the control valve 9 is opened, water is sprayed into the spray tower 4 through the atomizing nozzle 7 to spray and cool the material in the spray tower 4. After the high-temperature material is sprayed and cooled by the four groups of thermal nozzles 6, it is further sprayed and cooled by the four groups of atomizing nozzles 7 until the material falls into the bottom of the tower.

[0026] As one of the embodiments, a layer of wire mesh 12 is provided on the top of the spray tower 4 to prevent foreign objects from falling into the tower without affecting the air release. A lightning rod 13 is provided on the top of the spray tower to connect with the workshop lightning protection system to play a lightning protection role.

[0027] The present invention is not limited to the above preferred embodiments, and can also be transformed and improved in various forms within the spirit defined in the claims and the specification of the present invention, which can solve the same technical problems and achieve the expected technical effects, so it will not be repeated. All solutions that can be directly or associatively derived from the contents disclosed by ordinary technicians in the field, as long as they are within the spirit defined in the claims, also belong to the protection scope of the present invention.

Claims

1. An intelligent protection device for a graphitization furnace, characterized in that: The invention comprises an explosion relief pipe (2) having a first end connected to a graphitization furnace (1), an explosion-proof plate (3) arranged at an entrance of the explosion relief pipe (2), a spray tower (4) connected to the other end of the explosion relief pipe (2), an anti-reverse mechanism (5) arranged at an exit of the explosion relief pipe (2), a thermal nozzle (6) and an atomizing nozzle (7) located in the spray tower (4), a fire water supply system (8) for supplying water to the thermal nozzle (6) and the atomizing nozzle (7), a control valve (9) arranged on a water supply pipe of the fire water supply system (8) for controlling water inlet to the atomizing nozzle (7), and a control valve (9) arranged in the explosion relief pipe (2). An inert gas thermosensitive gas nozzle (10), an inert gas supply pipeline connected to the inert gas thermosensitive gas nozzle (10), and a dry powder explosion suppression system (11) connected to the explosion venting pipeline (2); the dry powder explosion suppression system (11) comprises a pressure sensor for measuring the pressure in the explosion venting pipeline (2) and / or a flame monitoring sensor for monitoring the flame condition in the explosion venting pipeline (2), a dry powder explosion suppressor connected to the explosion venting pipeline (2), and a controller for controlling the opening and closing of the dry powder explosion suppressor, the pressure sensor and / or the flame monitoring sensor being electrically connected to the controller; and the controller is also electrically connected to the control valve (9).

2. The intelligent protection device for a graphitization furnace according to claim 1, characterized in that: The fire-fighting water supply system (8) is a fire-fighting gas top-pressure water supply system.

3. The intelligent protection device for a graphitization furnace according to claim 1, characterized in that: A steel wire mesh (12) is provided on the top of the spray tower (4).

4. The intelligent protection device for a graphitization furnace according to claim 1, characterized in that: A lightning rod (13) is provided on the top of the spray tower (7).

5. The intelligent protection device for a graphitization furnace according to claim 1, characterized in that: The inert gas thermal nozzle (10), the thermal nozzle (6) and the atomizing nozzle (7) are all 90° solid cone nozzles.

6. The intelligent protection device for a graphitization furnace according to claim 1, characterized in that: The anti-reverse-series mechanism (5) is a self-weight sealing cover, which is hinged to the explosion-relief pipe (2) via a hinge. A soft felt seal is provided between the end of the explosion-relief pipe (2) near the self-weight sealing cover and the self-weight sealing cover. When the pressure value in the explosion-relief pipe (2) is higher than a set value, the anti-reverse-series mechanism (5) is opened, and when the pressure is lower than the set value, the anti-reverse-series mechanism (5) is closed.

7. An explosion-proof method for a graphitization furnace, applied to an intelligent protection device for a graphitization furnace, characterized in that: The intelligent protection device for the graphitization furnace comprises an explosion relief pipe (2) connected to the graphitization furnace (1) at a first end, an explosion-proof plate (3) arranged at an entrance of the explosion relief pipe (2), a spray tower (4) connected to the other end of the explosion relief pipe (2), an anti-reverse mechanism (5) arranged at an exit of the explosion relief pipe (2), a thermal nozzle (6) and an atomizing nozzle (7) located in the spray tower (4), a fire water supply system (8) for supplying water to the thermal nozzle (6) and the atomizing nozzle (7), a control valve (9) arranged on a water supply pipe of the fire water supply system (8) for controlling water inlet to the atomizing nozzle (7), and a control valve (9) arranged in the explosion relief pipe (2). An inert gas thermosensitive gas nozzle (10), an inert gas supply pipeline connected to the inert gas thermosensitive gas nozzle (10), and a dry powder explosion suppression system (11) connected to the explosion venting pipeline (2); the dry powder explosion suppression system (11) comprises a pressure sensor for measuring the pressure in the explosion venting pipeline (2) and / or a flame monitoring sensor for monitoring the flame condition in the explosion venting pipeline (2), a dry powder explosion suppressor connected to the explosion venting pipeline (2), and a controller for controlling the opening and closing of the dry powder explosion suppressor, the pressure sensor and / or the flame monitoring sensor being electrically connected to the controller; the controller is also electrically connected to the control valve (9); the explosion-proof control process comprises the following steps: When the pressure in the graphitization furnace (1) reaches the bursting pressure of the explosion-proof disk (3), the explosion-proof disk (3) bursts, and the graphitization furnace (1) is depressurized through the explosion-proof disk (3), the explosion-relief pipe (2) and the anti-reverse flow mechanism (5), and the material in the graphitization furnace (1) enters the spray tower (4); when the explosion-proof disk (3) bursts, the temperature in the explosion-relief pipe (2) reaches the opening temperature of the inert gas thermal nozzle (10), and the inert gas thermal nozzle (10) opens to spray inert gas into the explosion-relief pipe (2); when the temperature in the spray tower (4) reaches the opening temperature of the thermal nozzle (6), the thermal nozzle (6) opens to spray inert gas into the explosion-relief pipe (2); The nozzle (6) is opened, and the fire water supply system (8) sprays water into the spray tower (4) through the thermal nozzle (6); when the pressure sensor detects that the pressure in the explosion relief pipe (2) increases, or / and the flame monitoring sensor detects that there is a flame in the explosion relief pipe (2), the pressure sensor or the flame monitoring sensor sends an instruction to the controller to start the dry powder explosion suppressor, and the dry powder explosion suppressor is turned on; when the controller sends an instruction to start the dry powder explosion suppressor, the controller also sends an opening instruction to the control valve (9), and after the control valve (9) is opened, water is sprayed into the spray tower (4) through the atomizing nozzle (7).

Images