A control method for air intake system of civil air defense project

Abstract

The present invention discloses a control method for an air intake system of a civil air defense project, and relates to the technical field of civil air defense. In order to ensure the reliability of air intake control; the air intake system is divided into a gas filter room, a wartime air intake room, and a chemical defense communication duty room according to regions; a filter absorber is arranged in the gas filter room; a manual and electric dual-purpose fan is installed in the wartime air intake room; an electrical control box is arranged in the chemical defense communication duty room; a pre-filter room and a dust removal room are arranged in the air intake section of the gas filter room, and the gas filter room is connected with the pre-filter room and the dust removal room through the front end of the air intake pipe, and a main ventilation duct is also installed in the wartime air intake room, and the rear end of the air intake duct passes through the gas filter room and is connected with the main ventilation duct of the wartime air intake room. The air intake system of the present invention has a high degree of automation, various electromechanical equipment can be opened and closed quickly, the logic setting is simple and easy to operate, and the system reliability and safety are high; the purification and ventilation function can avoid the long-term accumulation of polluted air and endanger the life and health of personnel.

Description

Technical Field

[0001] The present invention relates to the field of civil air defense technology, and in particular to a control method for an air intake system of a civil air defense project. Background Art

[0002] Civil air defense projects need to be equipped with different ventilation methods according to their protection level and purpose, as well as the requirements for use in peacetime and wartime. Usually, when civil air defense projects have personnel shelter requirements, they should have three types of ventilation: clean ventilation, gas filtering ventilation, and isolation ventilation. When civil air defense projects are only used as material warehouses, they only have two types of ventilation: clean ventilation and isolation ventilation.

[0003] The current design standards for ventilation systems in civil air defense projects have been in effect for nearly 20 years. The relevant design principles, ventilation principles and performance indicators of related internal equipment are not much different from those when the civil air defense industry started in the 1960s, and new technologies are rarely used. Specifically, the following deficiencies exist in the air intake system during wartime:

[0004] 1. Low degree of automation. The ventilation system uses a large number of gate valves and manual closed valves, which must be opened and closed manually one by one, and auxiliary tools such as ladders are required. This is not only inefficient, but also has high safety risks;

[0005] 2. Air quality and pressure detection adopts sampling detection, and the detection accuracy is wide;

[0006] 3. Since the switching between different ventilation modes requires manual operation, it is easy to cause the fan and valve to not be opened and closed at the same time, causing damage to the equipment;

[0007] 4. After the existing filter absorber is dismantled and replaced, personnel need to manually open the ventilation plug for ventilation, which may cause personnel to be contaminated with toxic agents or radioactive dust. Summary of the invention

[0008] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a control method for the air intake system of a civil air defense project.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A control method for an air intake system of a civil air defense project, wherein the air intake system is divided into a gas filter room, a wartime air intake room, and a chemical defense communication duty room according to regions; a filter absorber is arranged in the gas filter room; a manual and electric dual-purpose fan is installed in the wartime air intake room; and an electrical control box is arranged in the chemical defense communication duty room;

[0011] The air inlet section of the gas filter room is provided with a pre-filter room and a dust removal room. The gas filter room is connected with the pre-filter room and the dust removal room through the front end of the air inlet pipe. A main ventilation pipe is also installed in the air inlet room during wartime. The rear end of the air inlet pipe passes through the gas filter room and is connected with the main ventilation pipe of the air inlet room during wartime. The main ventilation pipe is provided with a manual electric sealing valve assembly for controlling the connection and disconnection of the main ventilation pipe and the air inlet pipe.

[0012] The air inlet end of the filter absorber is connected to the air inlet pipe through the ventilation pipe; the ventilation pipe adopts a three-way structure, the pipe opening 1 of the ventilation pipe is connected to the air inlet pipe through the manual electric sealing valve 3, the pipe opening 2 is connected to the filter absorber, and the pipe opening 3 is equipped with a manual electric sealing valve 4 as a plug;

[0013] An air outlet end of the filter absorber is connected to an air outlet branch pipe, and an air inlet auxiliary pipe is also arranged in the wartime air inlet machine room; the air outlet branch pipe passes through the filter chamber and is connected with the air inlet auxiliary pipe of the wartime air inlet machine room; the air inlet auxiliary pipe is connected to the main ventilation duct through a manual electric sealing valve five; the terminal of the main ventilation duct of the fan room passes through the wall of the fan room and is connected to the interior of the civil air defense project, and a manual electric sealing valve six is ​​arranged on the inner side of the wall.

[0014] Preferably: the manual electric sealed valve assembly includes a manual electric sealed valve 1 and a manual electric sealed valve 2, the manual electric sealed valve 1 and the manual electric sealed valve 2 are respectively located in the gas filter room and the wartime air intake room, and the manual electric sealed valve 1 and the manual electric sealed valve 2 are arranged in series.

[0015] Furthermore: the air inlet end of the human-powered and electric dual-purpose fan in the wartime air inlet room is connected to the main ventilation duct through a pipe; an air outlet duct is also provided in the wartime air inlet room, and the air outlet end of the human-powered and electric dual-purpose fan is connected to the air outlet duct; one end of the air outlet duct of the wartime air inlet room passes through the wall of the wartime air inlet room and is connected to the interior of the civil air defense project.

[0016] Further preferred: the power supply port of the electrical control box in the chemical defense communication duty room is respectively connected to the human-powered electric dual-purpose fan and each manual electric sealed valve, and the control signal output end of the electrical control box is respectively connected to the human-powered electric dual-purpose fan and each manual electric sealed valve actuator through a control cable.

[0017] As a preferred embodiment of the present invention: a wave-breaking device is connected to the front end of the air inlet pipe, and the wave-breaking device is connected to a coarse filter through a front end pipeline, air pressure sensors are arranged on the front and rear sides of the wave-breaking device, the air pressure sensors are respectively located in the air inlet pipe and the front end pipeline, a radioactivity monitoring sensor is also arranged in the front end pipeline, the radioactivity monitoring sensor is located between the coarse filter and the air pressure sensor, an exhaust gas detection sensor is arranged in the air outlet branch pipe, and a control signal input end of the electrical control box is electrically connected to the radioactivity monitoring sensor, the air pressure sensor and the exhaust gas detection sensor.

[0018] As a further preferred embodiment of the present invention: when the civil air defense project is damaged by war and is in a power outage condition, the air intake system only implements two ventilation modes: clean ventilation and isolation ventilation; if the project is not attacked by nuclear weapons, chemical weapons and biological weapons, clean ventilation is adopted; specifically, the clean ventilation mode under this condition includes the following steps:

[0019] S1: Manually operate the hand-electric airtight valve 1, hand-electric airtight valve 2, and hand-electric airtight valve 6 to the open state;

[0020] S2: Manually operate the remaining electric sealed valves to the closed state;

[0021] S3: A human-powered dual-purpose fan is driven by humans to deliver clean air from outside the project to the interior of the civil air defense project through the air inlet pipe of the gas filter room and the main ventilation pipe of the air inlet room during wartime;

[0022] When a civil air defense project receives a nuclear, chemical or biological weapons attack alarm, and the power supply to the project is interrupted, the isolation ventilation mode must be adopted; specifically, the isolation ventilation mode under this condition includes the following steps:

[0023] S11: Manual electric closed valve from 6 to open state;

[0024] S12: Manually operate the remaining electric sealed valves to the closed state;

[0025] S13: A human-powered dual-purpose fan is driven by humans to circulate the air inside the project through the main ventilation duct of the wartime air inlet room and the air outlet duct of the fan room to the interior of the civil air defense project.

[0026] As a further scheme of the present invention: when the civil air defense project is in the power supply condition, the air intake system has two modes: manual control and automatic control. When in the two control modes, the electrical control box controls the manual electric dual-purpose fan and the manual electric sealed valve to start, and all the manual electric sealed valves are in the initial closed state, and the initial state of the manual electric dual-purpose fan is the shutdown state; the control method is specifically: according to the operation mode selection switch of the electrical control box, the operation mode of the air intake system is selected, including manual control mode and automatic control mode; when the operation mode is manual control mode, the air intake system realizes four ventilation modes: clean ventilation, poison filtering ventilation, isolation ventilation and purification ventilation.

[0027] On the basis of the above scheme: when civil air defense projects are not attacked by nuclear weapons, chemical weapons and biological weapons, clean ventilation is adopted; specifically, the clean ventilation method under this condition includes the following steps:

[0028] S21: The electrical control box controls the manual electric sealed valve 1, manual electric sealed valve 2, and manual electric sealed valve 6 to the open state, and the other manual electric sealed valves remain in the closed state;

[0029] S22: Turn on the manual and electric dual-purpose fans to transport the clean air outside the project to the interior of the civil air defense project through the air inlet pipe of the gas filter room and the main ventilation pipe of the wartime air inlet machine room;

[0030] When civil air defense projects receive an alarm of a nuclear, chemical or biological attack, they must use gas filtration ventilation; specifically, the gas filtration ventilation method under this condition includes the following steps:

[0031] S31: The electrical control box controls the manual electric sealed valve 3, the manual electric sealed valve 5 and the manual electric sealed valve 6 to the open state, and the other manual electric sealed valves remain in the closed state;

[0032] S32: Turn on the manual and electric dual-purpose fan to transport the clean air outside the project to the inside of the civil air defense project through the air inlet duct of the gas filter room, the ventilation duct, the filter absorber, the air outlet branch pipe, the wartime air inlet auxiliary pipe of the air inlet room, and the main ventilation duct of the wartime air inlet room.

[0033] Based on the above scheme, it is preferred that: in the gas filtering ventilation project, when it is found that the amount of radioactive dust, chemical agents and biological warfare agents in the air after passing through the filter absorber exceeds the allowable value or the ventilation resistance of the filter absorber is too large or too small, it is necessary to immediately switch to isolation ventilation, find out the cause and deal with it properly, and then switch to gas filtering ventilation; specifically, the ventilation method under this condition includes the following steps:

[0034] S41: The electrical control box controls six of the manual electric sealed valves to the open state, and switches the remaining manual electric sealed valves to the closed state;

[0035] S42: Turn on the manual and electric dual-purpose fan to circulate the air inside the project through the main ventilation duct of the wartime air inlet room and the air outlet duct of the fan room to the interior of the civil air defense project;

[0036] A hand-operated electric airtight valve is installed in the gas filter room to connect the gas filter room with the interior of the civil air defense project.

[0037] Purification ventilation state, specifically, after replacing the filter absorber, the electrical control box controls the installation of manual electric sealed valve four, manual electric sealed valve five, manual electric sealed valve six and manual electric sealed valve seven to the open state, and the other manual electric sealed valves remain in the closed state. At the same time, the manual and electric dual-purpose fan is turned on to transport the polluted air in the filter room through the ventilation duct, filter absorber, outlet branch pipe, wartime air inlet auxiliary pipe of the air inlet room, and the main ventilation duct of the wartime air inlet room to the inside of the civil air defense project.

[0038] On the basis of the above scheme, it is further preferred that: when the operation mode is the automatic control mode, the air intake system can realize three ventilation modes: clean ventilation, gas filtering ventilation, and isolation ventilation;

[0039] The radioactivity monitoring sensor, air pressure sensor, and exhaust gas detection sensor monitor the air quality and pressure inside and outside the project in real time, and transmit the signal to the electrical control box, which processes the received signal and controls the manual and electric dual-purpose blower and manual and electric sealing valve to work according to the air quality and pressure status; the specific working steps are the same as those in the manual control mode;

[0040] The electrical control box has an interface for connecting a control line with a four-proof light, which can display the four functional states in the automatic control mode on the four-proof light. The four-proof light uses four different colors to display different ventilation states, among which red represents isolation ventilation, green represents clean ventilation, yellow represents gas filtering ventilation, and white represents purification ventilation;

[0041] The manpower-electric dual-purpose fan adopts an electric hand-cranked dual-purpose fan and an electric foot-operated dual-purpose fan, and the fan is fixed on the bottom plate or support;

[0042] The pipeline before the second manual electric sealing valve is an airtight duct welded with steel plates with a thickness of not less than 3mm, and the pipeline after that is an air duct made of ordinary galvanized steel plates.

[0043] The beneficial effects of the present invention are:

[0044] 1. The air intake system of the present invention has a high degree of automation, various electromechanical equipment can be quickly opened and closed, the logic setting is simple and easy to operate, and the entire system has high reliability and safety.

[0045] 2. The purification and ventilation function of the present invention can prevent the long-term accumulation of polluted air and endanger the life and health of personnel.

[0046] 3. The various types of sensors used in the present invention have high monitoring accuracy and are independent of manual labor, which reduces labor and equipment costs and improves accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0048] Figure 1 A schematic diagram of an air intake system for civil air defense projects proposed by the present invention;

[0049] Figure 2 This is a schematic diagram of the circuit control structure of an air intake system for a civil air defense project proposed by the present invention.

[0050] In the figure: 1 filter absorber, 2 manual electric dual-purpose fan, 3 electrical control box, 4 air inlet pipe, 5 main ventilation pipe, 6 manual electric sealed valve one, 7 manual electric sealed valve two, 8 ventilation pipe, 9 manual electric sealed valve three, 10 manual electric sealed valve four, 11 outlet branch pipe, 12 air inlet auxiliary pipe, 13 manual electric sealed valve five, 14 manual electric sealed valve six, 15 outlet pipe, 16 manual electric sealed valve seven, 17 radioactive monitoring sensor, 18 air pressure sensor, 19 exhaust detection sensor, 20 four-proof lamp, 21 coarse filter, 22 wave elimination equipment. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0054] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0055] In addition, the term "plurality" shall mean two or more.

[0056] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0057] A control method for the air intake system of a civil air defense project, such as Figure 1 , Figure 2 As shown, the air intake system is divided into a gas filter room, a wartime air intake room and a chemical defense communication duty room according to the area; a filter absorber 1 is installed in the gas filter room; a manual and electric dual-purpose fan 2 is installed in the wartime air intake room; an electrical control box 3 is installed in the chemical defense communication duty room;

[0058] The air inlet section of the gas filter chamber is provided with a pre-filter chamber and a dust removal chamber, and the gas filter chamber is connected with the pre-filter chamber and the dust removal chamber through the front end of the air inlet pipe 4. A main ventilation pipe 5 is also installed in the wartime air inlet machine room. The rear end of the air inlet pipe 4 passes through the gas filter chamber and is connected with the main ventilation pipe 5 of the wartime air inlet machine room. The main ventilation pipe 5 is provided with a manual electric sealing valve assembly for controlling the main ventilation pipe 5 and the air inlet pipe 4.

[0059] The air inlet end of the filter absorber 1 is connected to the air inlet pipe 4 through the ventilation pipe 8; the ventilation pipe 8 adopts a three-way structure, the pipe opening 1 of the ventilation pipe 8 is connected to the air inlet pipe 4 through the manual electric sealing valve 3 9, the pipe opening 2 is connected to the filter absorber 1, and the pipe opening 3 is equipped with a manual electric sealing valve 4 10 as a plug;

[0060] The air outlet end of the filter absorber 1 is connected to an air outlet branch pipe 11, and an air inlet auxiliary pipe 12 is also arranged in the air inlet room during wartime for communication; the air outlet branch pipe 11 passes through the filter chamber and is connected to the air inlet auxiliary pipe 12 of the air inlet room during wartime; the air inlet auxiliary pipe 12 is connected to the main ventilation pipe 5 through a manual electric sealing valve 5 13; the terminal of the main ventilation pipe 5 of the fan room passes through the wall of the fan room and is connected to the interior of the civil air defense project, and a manual electric sealing valve 6 14 is arranged on the inner side of the wall;

[0061] The hand-operated electric sealed valve assembly includes a hand-operated electric sealed valve 1 6 and a hand-operated electric sealed valve 2 7, which are respectively located in the gas filter room and the wartime air intake room, and the hand-operated electric sealed valve 1 6 and the hand-operated electric sealed valve 2 7 are arranged in series;

[0062] The air inlet end of the manpower-electric dual-purpose fan 2 in the wartime air inlet room is connected to the main ventilation duct 5 through a pipeline; an air outlet duct 15 is also provided in the wartime air inlet room, and the air outlet end of the manpower-electric dual-purpose fan 2 is connected to the air outlet duct 15; one end of the air outlet duct 15 of the wartime air inlet room passes through the wall of the wartime air inlet room and is connected to the interior of the civil air defense project;

[0063] The power supply port of the electrical control box 3 in the chemical defense communication duty room is respectively connected to the manual-electric dual-purpose fan 2 and each manual-electric sealed valve, and the control signal output end of the electrical control box 3 is respectively connected to the manual-electric dual-purpose fan 2 and the actuator of each manual-electric sealed valve through a control cable.

[0064] To improve safety, Figure 1 As shown, the front end of the air inlet pipe 4 is connected to a wave-breaking device 22, and the wave-breaking device 22 is connected to a coarse filter 21 through a front-end pipeline. Air pressure sensors 18 are arranged on both the front and rear sides of the wave-breaking device 22, and the air pressure sensors 18 are respectively located in the air inlet pipe 4 and the front-end pipeline. A radioactivity monitoring sensor 17 is also arranged in the front-end pipeline, and the radioactivity monitoring sensor 17 is located between the coarse filter 21 and the air pressure sensor 18. An exhaust gas detection sensor 19 is arranged in the air outlet branch pipe 11, and a control signal input end of the electrical control box 3 is electrically connected to the radioactivity monitoring sensor 17, the air pressure sensor 18 and the exhaust gas detection sensor 19.

[0065] In order to reliably control the air intake system; when the civil air defense project is damaged by war and is in a power outage condition, the air intake system only implements two ventilation modes: clean ventilation and isolation ventilation; if the project is not attacked by nuclear weapons, chemical weapons, and biological weapons, clean ventilation is used; specifically, the clean ventilation method under this condition includes the following steps:

[0066] S1: Manually operate the hand-electric sealed valve 1 6, the hand-electric sealed valve 2 7, and the hand-electric sealed valve 6 14 to the open state;

[0067] S2: Manually operate the remaining electric sealed valves to the closed state;

[0068] S3: The human-powered and electric dual-purpose fan 2 is driven by humans to deliver the clean air outside the project to the interior of the civil air defense project through the air inlet pipe 4 of the gas filter room and the main ventilation pipe 5 of the wartime air inlet room;

[0069] When a civil air defense project receives a nuclear, chemical or biological weapons attack alarm, and the power supply to the project is interrupted, the isolation ventilation mode must be adopted; specifically, the isolation ventilation mode under this condition includes the following steps:

[0070] S11: The manual electric sealing valve 614 is in the open state;

[0071] S12: Manually operate the remaining electric sealed valves to the closed state;

[0072] S13: The human-powered and electric dual-purpose fan 2 is driven by humans to circulate the air inside the project through the main ventilation duct 5 of the air inlet room during wartime and the air outlet duct 15 of the air machine room to the inside of the civil air defense project.

[0073] In order to control more reliably; when the civil air defense project is in power supply condition, the air intake system has two modes of manual control and automatic control. When in the two control modes, the electrical control box 3 controls the manual and electric dual-purpose fan 2 and the manual electric sealed valve to start, and all manual electric sealed valves are in the initial closed state, and the initial state of the manual and electric dual-purpose fan 2 is the shutdown state; the control method is specifically: according to the operation mode selection switch of the electrical control box, the operation mode of the air intake system is selected, including manual control mode and automatic control mode; when the operation mode is manual control mode, the air intake system realizes four ventilation modes of clean ventilation, poison filtering ventilation, isolation ventilation and purification ventilation.

[0074] When civil air defense projects are not attacked by nuclear weapons, chemical weapons, or biological weapons, clean ventilation is used; specifically, the clean ventilation method under such conditions includes the following steps:

[0075] S21: The electrical control box 3 controls the manual electric sealed valve 1 6, the manual electric sealed valve 2 7, and the manual electric sealed valve 6 14 to the open state, and the other manual electric sealed valves remain in the closed state;

[0076] S22: Turn on the manual and electric dual-purpose fan 2 to transport the clean air outside the project to the inside of the civil air defense project through the air inlet pipe 4 of the gas filter room and the main ventilation pipe 5 of the wartime air inlet room.

[0077] When civil air defense projects receive an alarm of a nuclear, chemical or biological attack, they must use gas filtration ventilation; specifically, the gas filtration ventilation method under this condition includes the following steps:

[0078] S31: The electrical control box 3 controls the manual electric sealed valve 3 9, the manual electric sealed valve 5 13 and the manual electric sealed valve 6 14 to the open state, and the other manual electric sealed valves remain in the closed state;

[0079] S32: Turn on the manual and electric dual-purpose fan 2 to transport the clean air outside the project to the inside of the civil air defense project through the air inlet pipe 4 of the gas filter room, the ventilation pipe 8, the filter absorber 1, the air outlet branch pipe 11, the wartime air inlet auxiliary pipe 12 of the air inlet room, and the main ventilation pipe 5 of the wartime air inlet room.

[0080] In the gas filtering ventilation project, when it is found that the amount of radioactive dust, chemical agents and biological warfare agents in the air after passing through the filter absorber 1 exceeds the allowable value or the ventilation resistance of the filter absorber 1 is too large or too small, it is necessary to immediately switch to isolation ventilation, find out the cause and deal with it properly, and then switch to gas filtering ventilation; specifically, the ventilation method under this condition includes the following steps:

[0081] S41: The electrical control box 3 controls the manual electric sealed valve 6 14 to the open state, and switches the remaining manual electric sealed valves to the closed state;

[0082] S42: Turn on the manual and electric dual-purpose fan 2 to circulate the air inside the project through the main ventilation duct 5 of the air inlet room during wartime and the air outlet duct 15 of the air machine room to the inside of the civil air defense project.

[0083] A hand-operated electric airtight valve 716 is installed in the gas filter room to connect the gas filter room with the interior of the civil air defense project;

[0084] The purification ventilation state is because the filter absorber 1 has a service life requirement. When the project adopts gas filtering ventilation for a long time, the filtering efficiency of the filter absorber 1 will be greatly shortened and it must be replaced in time; specifically, after the filter absorber 1 is replaced, the electrical control box 3 controls the installation of manual electric sealed valve four 10, manual electric sealed valve five 13, manual electric sealed valve six 14 and manual electric sealed valve seven 16 to the open state, and the other manual electric sealed valves remain in the closed state. At the same time, the manual electric dual-purpose fan 2 is turned on to transport the polluted air in the gas filtering room through the ventilation pipe 8, the filter absorber 1, the outlet branch pipe 11, the wartime air inlet auxiliary pipe 12 of the air inlet room, and the main ventilation pipe 5 of the wartime air inlet room to the inside of the civil air defense project.

[0085] When the operation mode is automatic control mode, the air intake system can realize three ventilation modes: clean ventilation, gas filtering ventilation, and isolation ventilation;

[0086] The radioactivity monitoring sensor 17, the air pressure sensor 18, and the exhaust gas detection sensor 19 monitor the air quality and pressure inside and outside the project in real time, and transmit the signal to the electrical control box 3, which processes the received signal and controls the manual and electric dual-purpose fan 2 and the manual and electric sealing valve to work according to the air quality and pressure status; the specific working steps are the same as those in the manual control mode;

[0087] The electrical control box 3 reserves an interface for connecting a control line connected to a four-proof light 20, which can display the four functional states in the automatic control mode on the four-proof light 20. The four-proof light uses four different colors to display different ventilation states, among which red represents isolation ventilation, green represents clean ventilation, yellow represents gas filtering ventilation, and white represents purification ventilation.

[0088] The manpower-electric dual-purpose fan 2 preferably adopts an electric hand-cranked dual-purpose fan and an electric foot-operated dual-purpose fan, and the fan is fixed on a base plate or a support;

[0089] The pipeline before the manual electric sealing valve 27 is an airtight duct welded from a steel plate having a thickness of not less than 3 mm, and the subsequent pipeline can be an duct made of ordinary galvanized steel plates.

[0090] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A control method for the air intake system of a civil air defense project, characterized in that: The air intake system is divided into a gas filter room, a wartime air intake room and a chemical defense communication duty room according to the area; the gas filter room is provided with a filter absorber (1); the wartime air intake room is provided with a manual and electric dual-purpose fan (2); the chemical defense communication duty room is provided with an electrical control box (3); The air inlet section of the gas filter chamber is provided with a pre-filter chamber and a dust removal chamber, the gas filter chamber is connected with the pre-filter chamber and the dust removal chamber through the front end of the air inlet pipe (4), a main ventilation pipe (5) is also installed in the wartime air inlet room, the rear end of the air inlet pipe (4) passes through the gas filter chamber and is connected with the main ventilation pipe (5) of the wartime air inlet room, and the main ventilation pipe (5) is provided with a manual electric sealing valve assembly for controlling the main ventilation pipe (5) and the air inlet pipe (4) to be opened and closed; The air inlet end of the filter absorber (1) is connected to the air inlet pipe (4) via a ventilation pipe (8); the ventilation pipe (8) adopts a three-way structure, the pipe opening 1 of the ventilation pipe (8) is connected to the air inlet pipe (4) via a manual electric sealing valve 3 (9), the pipe opening 2 is connected to the filter absorber (1), and the pipe opening 3 is equipped with a manual electric sealing valve 4 (10) as a plug; The air outlet end of the filter absorber (1) is connected to an air outlet branch pipe (11), and an air inlet auxiliary pipe (12) is also arranged in the wartime air inlet room for communication; the air outlet branch pipe (11) passes through the filter chamber and is connected to the air inlet auxiliary pipe (12) of the wartime air inlet room; the air inlet auxiliary pipe (12) is connected to the main ventilation pipe (5) through a manual electric sealing valve five (13); the terminal end of the main ventilation pipe (5) of the fan room passes through the wall of the fan room and is connected to the interior of the civil air defense project, and a manual electric sealing valve six (14) is arranged on the inner side of the wall; The manual electric sealed valve assembly comprises a manual electric sealed valve 1 (6) and a manual electric sealed valve 2 (7), the manual electric sealed valve 1 (6) and the manual electric sealed valve 2 (7) are respectively located in the gas filter room and the wartime air intake room, and the manual electric sealed valve 1 (6) and the manual electric sealed valve 2 (7) are arranged in series; When the civil air defense project is damaged by war and is in a power outage condition, the air intake system only implements two ventilation modes: clean ventilation and isolation ventilation. If the project is not attacked by nuclear weapons, chemical weapons, and biological weapons, clean ventilation is used. When the civil air defense project is in power supply condition, the air intake system has two modes: manual control and automatic control; When the operation mode is manual control mode, the air intake system realizes four ventilation modes: clean ventilation, poison filtering ventilation, isolation ventilation and purification ventilation.

2. The control method of the air intake system of a civil air defense project according to claim 1, characterized in that: The air inlet end of the manual and electric dual-purpose fan (2) in the wartime air inlet room is connected to the main ventilation duct (5) through a pipeline; an air outlet duct (15) is also provided in the wartime air inlet room, and the air outlet end of the manual and electric dual-purpose fan (2) is connected to the air outlet duct (15); one end of the air outlet duct (15) of the wartime air inlet room passes through the wall of the wartime air inlet room and is connected to the interior of the civil air defense project.

3. The control method of the air intake system of a civil air defense project according to claim 2 is characterized in that: The power supply port of the electrical control box (3) of the chemical defense communication duty room is respectively connected to the manual and electric dual-purpose fan (2) and each manual electric sealed valve, and the control signal output end of the electrical control box (3) is respectively connected to the manual and electric dual-purpose fan (2) and the actuator of each manual electric sealed valve via a control cable.

4. The control method of the air intake system of a civil air defense project according to claim 3 is characterized in that: The front end of the air inlet pipe (4) is connected to a wave absorbing device (22), the wave absorbing device (22) is connected to a coarse filter (21) via a front end pipeline, air pressure sensors (18) are provided on both the front and rear sides of the wave absorbing device (22), the air pressure sensors (18) are respectively located in the air inlet pipe (4) and the front end pipeline, a radioactivity monitoring sensor (17) is also provided in the front end pipeline, the radioactivity monitoring sensor (17) is located between the coarse filter (21) and the air pressure sensor (18), an exhaust gas detection sensor (19) is provided in the air outlet branch pipe (11), and a control signal input end of the electrical control box (3) is electrically connected to the radioactivity monitoring sensor (17), the air pressure sensor (18) and the exhaust gas detection sensor (19).

5. The control method of the air intake system of a civil air defense project according to claim 4 is characterized in that: The clean ventilation method comprises the following steps: S1: Manually operate the manual electric sealed valve 1 (6), the manual electric sealed valve 2 (7), and the manual electric sealed valve 6 (14) to the open state; S2: Manually operate the remaining electric sealed valves to the closed state; S3: A human-powered dual-purpose fan (2) is driven by humans to deliver clean air from outside the project to the interior of the civil air defense project through the air inlet pipe (4) of the gas filter room and the main ventilation pipe (5) of the air inlet room during wartime; When a civil air defense project receives a nuclear, chemical or biological weapons attack alarm, and the power supply to the project is interrupted, the isolation ventilation mode must be adopted; specifically, the isolation ventilation mode under this condition includes the following steps: S11: Manual electric sealing valve six (14) to open state; S12: Manually operate the remaining electric sealed valves to the closed state; S13: A human-powered dual-purpose fan (2) is driven by humans to circulate the air inside the project through the main ventilation duct (5) of the air inlet room during wartime and the air outlet duct (15) of the air machine room to the interior of the civil air defense project.

6. A control method for an air intake system of a civil air defense project according to claim 5, characterized in that: When the air intake system is under manual control and automatic control, the electrical control box (3) controls the manual and electric dual-purpose fan (2) and the manual and electric sealed valves to start, all the manual and electric sealed valves are in an initial closed state, and the initial state of the manual and electric dual-purpose fan (2) is a shutdown state; the control method specifically comprises: selecting an operating mode of the air intake system according to an operating mode selection switch of the electrical control box, including a manual control mode and an automatic control mode.

7. A control method for an air intake system of a civil air defense project according to claim 6, characterized in that: When civil air defense projects are not attacked by nuclear weapons, chemical weapons, and biological weapons, clean ventilation is used; specifically, the clean ventilation method under this condition includes the following steps: S21: The electrical control box (3) controls the manual electric sealed valve 1 (6), the manual electric sealed valve 2 (7), and the manual electric sealed valve 6 (14) to the open state, and the remaining manual electric sealed valves remain in the closed state; S22: Turn on the manual and electric dual-purpose fan (2) to transport clean air from the outside of the project to the inside of the civil air defense project through the air inlet pipe (4) of the gas filter room and the main ventilation pipe (5) of the wartime air inlet room; When civil air defense projects receive an alarm of a nuclear, chemical or biological attack, they must use gas filtration ventilation; specifically, the gas filtration ventilation method under this condition includes the following steps: S31: The electrical control box (3) controls the manual electric sealed valve three (9), the manual electric sealed valve five (13) and the manual electric sealed valve six (14) to the open state, and the remaining manual electric sealed valves remain in the closed state; S32: Turn on the manual and electric dual-purpose fan (2) to transport clean air from the outside of the project to the interior of the civil air defense project through the air inlet pipe (4) of the gas filter room, the ventilation pipe (8), the filter absorber (1), the air outlet branch pipe (11), the auxiliary air inlet pipe (12) of the wartime air inlet room, and the main ventilation pipe (5) of the wartime air inlet room.

8. The control method of the air intake system of a civil air defense project according to claim 7, characterized in that: In the gas filtering and ventilation project, when it is found that the amount of radioactive dust, chemical agents and biological warfare agents in the air after passing through the filter absorber (1) exceeds the allowable value or the ventilation resistance of the filter absorber (1) is too large or too small, it is necessary to immediately switch to isolation ventilation, find out the cause and deal with it properly, and then switch to gas filtering and ventilation; specifically, the ventilation method under this condition includes the following steps: S41: The electrical control box (3) controls the manual electric sealed valve six (14) to the open state, and switches the remaining manual electric sealed valves to the closed state; S42: Turn on the manual and electric dual-purpose fan (2) to circulate the air inside the project through the main ventilation duct (5) of the air inlet room during wartime and the air outlet duct (15) of the air machine room to the interior of the civil air defense project; A hand-operated electric sealing valve (16) is installed in the gas filter room to connect the gas filter room with the interior of the civil air defense project; The purification ventilation state is specifically, after the filter absorber (1) is removed and replaced, the electrical control box (3) controls the installation of manual electric sealed valve four (10), manual electric sealed valve five (13), manual electric sealed valve six (14) and manual electric sealed valve seven (16) to the open state, and the remaining manual electric sealed valves are maintained in the closed state. At the same time, the manual electric dual-purpose fan (2) is turned on to transport the polluted air in the filter room through the ventilation pipe (8), the filter absorber (1), the outlet branch pipe (11), the wartime air intake room air intake auxiliary pipe (12), and the wartime air intake room main ventilation pipe (5) to the interior of the civil air defense project.

9. A control method for an air intake system of a civil air defense project according to claim 8, characterized in that: When the operation mode is the automatic control mode, the air intake system can realize three ventilation modes: clean ventilation, gas filtering ventilation, and isolation ventilation; The radioactivity monitoring sensor (17), the air pressure sensor (18), and the exhaust gas detection sensor (19) monitor the air quality and pressure inside and outside the project in real time, and transmit the signal to the electrical control box (3). The electrical control box (3) processes the received signal and controls the manual electric dual-purpose fan (2) and the manual electric sealing valve to work according to the air quality and pressure status. The specific working steps are the same as those in the manual control mode. The electrical control box (3) has an interface for receiving a control line connected to a four-proof light (20), which can display four functional states in the automatic control mode on the four-proof light (20), and the four-proof light uses four different colors to display different ventilation states, wherein red represents isolation ventilation, green represents clean ventilation, yellow represents gas filtering ventilation, and white represents purification ventilation; The manpower-electric dual-purpose fan (2) adopts an electric hand-cranked dual-purpose fan and an electric foot-operated dual-purpose fan, and the fan is fixed on a base plate or a support; The pipeline before the second manual electric airtight valve (7) is an airtight duct made of welded steel plates with a thickness of not less than 3 mm, and the pipeline after it is an air duct made of ordinary galvanized steel plates.

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