An emergency rescue air supply device

Abstract

The present invention discloses an emergency rescue air supply device, comprising: an air supply vehicle and an air supply control cabinet; the air supply vehicle can be accommodated in the air supply control cabinet; the air supply vehicle includes: an air source bottle and an air path control box, wheels installed under the air supply vehicle; the air path control box includes: an air supply interface communicated with the air source bottle, an air supply valve assembly, a pressure conversion device, an air outlet interface, a power supply interface for supplying power to the pressure conversion device; the air supply interface and the air outlet interface are communicated through a pipeline, the solenoid valve assembly is installed on the pipeline, and the pressure conversion device is used to monitor the pressure of the gas output from the air source bottle; the air supply control cabinet includes: a face mask communicated with the air outlet interface, a PLC controller, a display screen, a power supply line communicated with the power supply interface; the pressure conversion device is used to convert the pressure signal of the gas output from the air source bottle into an electrical signal and transmit it to the PLC controller through the power supply interface, and the PLC controller is used to calculate the remaining usage time according to the electrical signal and control the display screen to display the remaining usage time.

Description

Technical Field

[0001] The present invention relates to the field of emergency rescue, and in particular to an emergency rescue air supply device. Background Art

[0002] When a disaster or accident occurs, the on-site environment may not be suitable for normal breathing of people. For example, at the scene of a fire, a chemical gas leak, etc. Providing smooth breathing for people in an environment of smoke, poisonous gas, dust or lack of oxygen for a certain period of time can gain more time for rescue and provide guarantee for the successful rescue of people.

[0003] Existing emergency rescue air supply devices are generally integrated devices. When a disaster or accident occurs, the people to be rescued at the rescue site need to be proficient in using the device for self-rescue. And existing air supply devices are generally for single-person use, and enough sets of air supply devices need to be equipped so that all the people staying at the scene can be rescued. However, the actual situation is that the general disaster or accident scene is relatively chaotic, and the access to on-site air supply devices will also be relatively chaotic, and the number of equipped air supply devices may not be sufficient, all of which will affect the orderly progress of on-site rescue. For the convenience of inflation, the storage capacity of pure air in existing air supply devices is relatively small. For example, for a traditional positive pressure air breathing device, calculated based on the water volume of its gas cylinder being 6.8L and the rated working pressure being 30MPa, the gas storage volume in the gas cylinder is about 2000L under standard atmospheric pressure conditions. Calculated at a gas consumption rate of 30L / min, the theoretical maximum usage time for a person wearing this respirator is only 1h. In actual use, after the respirator gas cylinder is filled with compressed gas, a certain amount of gas will be wasted during the inspection process. In addition, due to factors such as tension, fear, and large workload during the wearing process of people, the human breathing volume will increase sharply, thus greatly reducing the effective usage time of the respirator. Moreover, for existing positive pressure air supply devices, the people to be rescued at the rescue site do not know the usage situation of the air in the air supply device, or only know the gas pressure in the air supply device through the gas source pressure gauge set at the air outlet end of the gas source, and then estimate the remaining usage time of the air supply device through the gas pressure, and cannot accurately obtain the remaining usage time of the air supply device. In addition, non-professionals will not estimate or misestimate the remaining usage time. The quantity limitation of on-site air supply devices, the air supply capacity limitation, and the inability of the people to be rescued to accurately know the remaining usage time of the air supply device will all affect the orderly progress of rescue. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an emergency rescue air supply device, which can ensure that there is a relatively sufficient air supply volume at the rescue site, and the people to be rescued can accurately know the remaining usage time of the air supply device.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] An emergency rescue air supply device, comprising: an air supply vehicle and an air supply control cabinet; the air supply vehicle can be accommodated in the air supply control cabinet;

[0007] The air supply vehicle includes: a plurality of gas source bottles and an air path control box, and a plurality of wheels installed under the air supply vehicle; the air path control box includes: an air supply interface communicated with the gas source bottles, an air supply valve assembly, a pressure conversion device, a plurality of air outlet interfaces, and a power supply interface for supplying power to the pressure conversion device; the air supply interface and the air outlet interfaces are communicated through pipelines, the solenoid valve assembly is installed on the pipelines, and the pressure conversion device is used for monitoring the pressure of the gas output from the gas source bottles;

[0008] The air supply control cabinet includes: a plurality of masks communicated with the air outlet interfaces, a PLC controller, a display screen, and a power supply line communicated with the power supply interface; the pressure conversion device is used for converting the pressure signal of the gas output from the gas source bottles into an electrical signal and transmitting it to the PLC controller through the power supply interface, and the PLC controller is used for calculating the remaining usage time according to the electrical signal and controlling the display screen to display the remaining usage time.

[0009] Furthermore, a plurality of pressure reducers are also installed in the air path control box, and the pressure reducers are installed between the air supply valve assembly and the air outlet interfaces, and are used for reducing the pressure of the gas output from the gas source bottles to a pressure suitable for breathing, and the number of the air outlet interfaces is the same as that of the pressure reducers.

[0010] Furthermore, the air supply valve assembly includes an electric air supply valve, a manual air supply valve, and a solenoid valve; in the air path control box, all the air supply interfaces are communicated through pipelines, all the air supply interfaces are respectively connected to one end of the electric air supply valve and one end of the manual air supply valve through pipelines, the other end of the electric air supply valve is connected to one end of the solenoid valve through a pipeline, and the other end of the manual air supply valve and the other end of the solenoid valve are connected to all the pressure reducers through pipelines; the solenoid valve is powered through the power supply interface, and the PLC controller controls the solenoid valve to open through the power supply interface.

[0011] Furthermore, the air path control box further includes an inflation valve and an inflation interface, one end of the inflation valve is connected to all the air supply interfaces through a pipeline, and the other end of the inflation valve is connected to the inflation interface through a pipeline.

[0012] Furthermore, the air supply interfaces, the air outlet interfaces, and the inflation interfaces are all arranged on the outer surface of the air path control box.

[0013] Further, the gas supply vehicle is placed into the gas supply control cabinet. The control panel of the gas circuit control box is located at one end of the gas supply control cabinet. The electric gas supply valve, the manual gas supply valve, and the inflation valve are all arranged on the outer surface of the control panel.

[0014] Further, the gas supply vehicle includes three gas source bottles, which are aluminum inner liner carbon fiber composite gas cylinders with a water volume of 50L and a rated working pressure of 30MPa. Five pressure reducers are installed in the gas circuit control box.

[0015] Further, an opening for installing the gas supply vehicle is provided at one end of the gas supply control cabinet, and tracks are arranged at the bottom of the gas supply control cabinet. Near the opening end of the gas supply control cabinet, the tracks are provided with guiding parts that smoothly extend to both sides of the tracks, and a limiting mechanism is arranged at the end of the tracks.

[0016] Further, each gas outlet interface is connected to three masks. A mask storage box is arranged above the gas supply control cabinet, and the masks connected to the same gas outlet interface are placed in the same mask storage box.

[0017] Further, a folding seat is also arranged on the gas supply control cabinet below the mask storage box.

[0018] The emergency rescue gas supply equipment of the present invention is divided into two parts: a gas supply vehicle and a gas supply control cabinet. The gas supply vehicle can be provided with multiple gas source bottles for gas supply, with sufficient gas supply, and is convenient for installation and maintenance. After the equipment is started, the personnel at the disaster or accident site can use masks for breathing. The pressure conversion device in the gas circuit control box of the gas supply vehicle converts the pressure of the gas output from the gas source bottle into an electrical signal, and then the PLC controller in the gas supply control cabinet calculates the remaining usage time using this electrical signal. The PLC controller controls the display screen to display this remaining display time. The remaining usage time of the gas supply equipment is visually and accurately displayed to the personnel at the rescue site. The personnel at the rescue site do not need to estimate the usage time of the gas supply equipment through the pressure gauge installed at the gas source; the external rescue personnel can also reasonably arrange the rescue plan according to the accurate remaining usage time of the gas supply equipment to achieve better rescue effects. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the emergency rescue equipment provided in this example;

[0020] Figure 2 is Figure 1 a schematic structural diagram of 1 in

[0021] Figure 3 is Figure 1 the front view of 1 in

[0022] Figure 4 isFigure 1 Rear view of 1;

[0023] Figure 5 is Figure 1 Right view of 1;

[0024] Figure 6 is Figure 1 Air circuit structure diagram of 1;

[0025] Figure 7 is Figure 1 Front view of 2;

[0026] Figure 8 is Figure 1 Structure diagram of 2;

[0027] Figure 9 is Figure 1 Another posture structure diagram of 2;

[0028] Figure 10 Schematic diagram of the air circuit control principle of the emergency rescue equipment provided by this example;

[0029] Figure 11 Schematic diagram of the electrical control principle of the emergency rescue equipment provided by this example;

[0030] In the figure:

[0031] 1. Gas supply vehicle; 1-1. Gas source cylinder; 1-1-1. Cylinder valve; 1-1-2. Locking strap; 1-2. Air circuit control box; 1-2-1. Gas supply interface; 1-2-2. Pressure conversion device; 1-2-3. Air outlet interface; 1-2-4. Power supply interface; 1-2-5. Pressure reducer; 1-2-6. Electric gas supply valve; 1-2-7. Manual gas supply valve; 1-2-8. Solenoid valve; 1-2-9. Inflation valve; 1-2-10. Inflation interface; 1-2-11. Handrail; 1-2-12. Lock; 1-2-13. Gas source pressure gauge; 1-3. Wheel; 2. Gas supply control cabinet; 2-1. Face mask; 2-2. Display screen; 2-3. Control panel; 2-4. Buzzer; 2-6. Changeover switch; 2-7. Face mask storage box; 2-8. Folding seat; 3. Track; 3-1. Guide part; 3-2. Limit mechanism. Specific implementation mode

[0032] To clearly illustrate the design concept of the present invention, the present invention will be described below with reference to examples.

[0033] To enable those skilled in the art to better understand the solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the examples of the present invention. Obviously, the described examples are only a part of the examples of the present invention, rather than all of them. Based on the examples in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0034] In the description of this embodiment, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0035] This example provides an emergency rescue air supply device, including: an air supply vehicle and an air supply control cabinet; the air supply vehicle can be accommodated in the air supply control cabinet;

[0036] The air supply vehicle includes: a plurality of gas source bottles and an air path control box, wheels installed under the air supply vehicle; the air path control box includes: an air supply interface communicated with the gas source bottles, an air supply valve assembly, a pressure conversion device, a plurality of air outlet interfaces, and a power supply interface for supplying power to the pressure conversion device; the air supply interface and the air outlet interfaces are communicated through pipelines, the solenoid valve assembly is installed on the pipelines, and the pressure conversion device is used to monitor the pressure of the gas output from the gas source bottles;

[0037] The air supply control cabinet includes: a plurality of masks communicated with the air outlet interfaces, a PLC controller, a display screen, and a power supply line communicated with the power supply interface; the pressure conversion device is used to convert the pressure signal of the gas output from the gas source bottles into an electrical signal and transmit it to the PLC controller through the power supply interface, and the PLC controller is used to calculate the remaining usage time according to the electrical signal and control the display screen to display the remaining usage time.

[0038] The emergency rescue air supply equipment in this example is divided into an air supply vehicle and an air supply control cabinet. The air supply vehicle can be equipped with multiple gas source bottles for air supply, with sufficient air supply volume, and is convenient for installation and maintenance. After the equipment is turned on, the personnel at the disaster or accident site can use masks for breathing. The pressure conversion device in the air path control box of the air supply vehicle converts the pressure of the gas output from the gas source bottle into an electrical signal, and then the PLC controller in the air supply control cabinet uses this electrical signal to calculate the remaining usage time, and the PLC controller controls the display screen to display this remaining display time. The above-mentioned air supply control device can intuitively and accurately display the remaining usage time of the air supply device to the rescue personnel at the scene. The rescue personnel at the scene do not need to estimate the usage time of the air supply device through the pressure gauge installed at the gas source; the external rescue personnel can also reasonably arrange the rescue plan according to the accurate remaining usage time of the air supply device to achieve better rescue results.

[0039] As Figure 1-10 shown in the example, an implementation manner of the emergency rescue air supply equipment of the present invention is provided. As Figure 1 shown, the air supply equipment includes: an air supply vehicle 1 and an air supply control cabinet 2; the air supply vehicle 1 can be accommodated in the air supply control cabinet 2;

[0040] The air supply vehicle 1 includes: a plurality of gas source bottles 1-1 and an air path control box 1-2, and a plurality of wheels 1-3 installed below the air supply vehicle 1; As Figure 2-6 shown, the air path control box 1-2 includes: an air supply interface 1-2-1 communicated with the gas source bottle 1-1, an air supply valve assembly, a pressure conversion device 1-2-2, a plurality of air outlet interfaces 1-2-3, a power supply interface 1-2-4 for supplying power to the pressure conversion device 1-2-2, and a plurality of pressure reducers 1-2-5;

[0041] The air supply control cabinet 2 includes: a plurality of masks 2-1 communicated with the air outlet interfaces 1-2-3, a PLC controller, a display screen 2-2, and a power supply line communicated with the power supply interface;

[0042] The air supply interface 1-2-1 and the air outlet interfaces 1-2-3 are communicated through a pipeline. The solenoid valve assembly is installed on the pipeline. The pressure conversion device 1-2-2 is used to monitor the pressure of the gas output from the gas source bottle 1-1. The pressure reducer 1-2-5 is installed between the air supply valve assembly and the air outlet interfaces 1-2-3 to reduce the pressure of the gas output from the gas source bottle 1-1 to a pressure suitable for breathing. The number of the air outlet interfaces 1-2-3 is the same as that of the pressure reducers 1-2-5; Among them, the air supply valve assembly includes an electric air supply valve 1-2-6, a manual air supply valve 1-2-7, and a solenoid valve 1-2-8; As Figure 6As shown, within the air circuit control box 1-2, all the air supply interfaces 1-2-1 are connected through pipelines. All the air supply interfaces 1-2-1 are respectively connected to one end of the electric air supply valve 1-2-6 and one end of the manual air supply valve 1-2-7 through pipelines. The other end of the electric air supply valve 1-2-6 is connected to one end of the solenoid valve 1-2-8 through a pipeline. The other end of the manual air supply valve 1-2-6 and the other end of the solenoid valve 1-2-8 are both connected to all the pressure reducers 1-2-5 through pipelines. The solenoid valve 1-2-8 is powered through the power supply interface 1-2-4. And the PLC controller controls the solenoid valve 1-2-8 to open through the power supply interface 1-2-4.

[0043] When the rescue site can be powered on, the electric air supply valve 1-2-6 can be opened, and the solenoid valve 1-2-8 is controlled by the PLC controller to open to supply air to the face mask 2-1. When the site has lost power, the manual air supply valve 1-2-7 can be opened to supply air to the face mask 2-1. In this way, whether the site can be powered on or not will not affect the use of the air supply equipment.

[0044] The pressure conversion device 1-2-2 is used to convert the pressure signal of the gas output from the gas source bottle 1-1 into an electrical signal and transmit it to the PLC controller through the power supply interface 1-2-4. The PLC controller is used to calculate the remaining usage time based on the electrical signal and control the display screen 2-2 to display the remaining usage time.

[0045] The remaining usage time of the air supply equipment is visually and accurately displayed to the personnel at the rescue site. The personnel at the rescue site do not need to estimate the usage time of the air supply equipment through the pressure gauge installed at the gas source. The external rescue personnel can also reasonably arrange the rescue plan based on the accurate remaining usage time of the air supply equipment to achieve better rescue effects.

[0046] Such as Figure 2 、 4As shown in FIGS. 6, the gas path control box 1-2 of the gas supply vehicle 1 further includes an inflation valve 1-2-9 and an inflation interface 1-2-10. One end of the inflation valve 1-2-9 is connected to all the gas supply interfaces 1-2-10 through a pipeline, and the other end of the inflation valve 1-2-9 is connected to the inflation interface 1-2-10 through a pipeline. The gas source bottle 1-1 on the gas supply vehicle 1 is inflated through the inflation valve 1-2-9. The inflation interface 1-2-10 is independently arranged on one surface of the gas path control box 1-2 to facilitate the connection between the inflation device and the inflation interface 1-2-10. The inflation interface 1-2-10 is communicated with the other end of the inflation valve 1-2-9 through a pipeline. In this way, the gas source bottle 1-1 can be inflated by opening the inflation valve 1-2-9. The inflation interface 1-2-10 is arranged on the surface of the gas path control box 3 without external pipelines and interfaces, making the gas supply vehicle 1 have good integrity. Similar to the inflation interface 1-2-10, the gas supply interface 1-2-1 and the gas outlet interface 1-2-3 are both arranged on the outer surface of the gas path control box 1-2. In this example, the gas supply interface 1-2-1 and the gas outlet interface 1-2-3 are arranged on the same outer surface of the gas path control box 1-2 to facilitate the connection of the gas supply and gas outlet pipelines.

[0047] See Figure 2 and Figure 6 , a gas source pressure gauge 1-2-13 is also arranged on the gas path control box 1-2. The gas source pressure gauge 1-2-13 is arranged on the outer surface of the gas path control box 1-2. The gas source pressure gauge 1-2-13 is connected to all the gas supply interfaces 1-2-1 through a pipeline and is used to measure the pressure of the gas output by the gas source bottle 1-1, so as to facilitate observing the pressure of the remaining gas in the gas vehicle 1.

[0048] As Figure 6 shown, the connection points of multiple pipelines are connected through a tee or a cross.

[0049] As Figure 1 shown, the gas supply vehicle 1 is placed in the gas supply control cabinet 2. The control panel of the gas path control box 1-2 is located at one end of the gas supply control cabinet 2. The electric gas supply valve 1-2-6, the manual gas supply valve 1-2-7 and the inflation valve 1-2-9 are all arranged on the outer surface of the control panel to facilitate corresponding control.

[0050] As Figure 2-4 shown, a handrail 1-2-11 and a lock 1-2-12 are also arranged on the control panel. The arrangement of the handrail 1-2-11 facilitates pushing the gas supply vehicle 1 to move. The arrangement of the lock 1-2-12 facilitates locking the gas supply vehicle 1 to the gas supply control cabinet 2 through the lock 1-2-12 on the control panel after the gas supply vehicle 1 is pushed into the gas supply control cabinet 2.

[0051] As Figure 2-5As shown, a bottle valve 1-1-1 is set at the gas outlet of the gas source bottle 1-1. In this example, the bottle valves 1-1-1 of different gas source bottles 1-1 can be opened separately or simultaneously. Accordingly, the gas supply volume is the largest when the bottle valves 1-1-1 of all gas source bottles 1-1 are opened simultaneously. In an emergency, the bottle valve 1-1-1 is opened in advance so that the gas supply vehicle 1 can supply gas to the personnel on site.

[0052] Combination Figure 6 and Figure 10 The gas circuit principle of the gas supply equipment in this example is explained through the physical control diagram of the gas circuit and the control principle diagram of the gas circuit: the gas in the gas source bottle 1-1 enters the pressure reducer 1-2-5 through the electric gas supply valve 1-2-6 and the solenoid valve 1-2-8, or through the manual gas supply valve 1-2-7. After the gas is reduced in pressure by the pressure reducer 1-2-5, it is passed into the mask 2-1 for personnel to breathe. Figure 1 The arrow direction in the figure is the flow direction of the gas during gas supply. In the gas supply device, multiple gas source bottles 1-1 are used to provide gas for people to breathe, which can ensure long-term gas supply.

[0053] like Figure 2 , 3 As shown in FIG. 5 , on the gas supply vehicle 1 , the gas source bottle 1 - 1 is fixed by a locking strap 1 - 1 - 2 .

[0054] In this example, the two wheels 4 located below the gas circuit control box 1 - 2 are universal wheels, which facilitate the flexible movement of the gas supply vehicle 1 .

[0055] The bottom of the gas supply control cabinet 2 is fixed as a whole by installing 8 sets of anchors. A large number of special bolts and nut structures of various specifications of profiles are used. Fasteners with the same interface are of the same specification as much as possible, striving to achieve simple operation, convenient disassembly and assembly, and easy maintenance.

[0056] An opening for installing the gas supply vehicle 1 is arranged at one end of the gas supply control cabinet 2, and a track 3 is arranged at the bottom of the gas supply control cabinet 2; near the opening end of the gas supply control cabinet 2, the track 3 is provided with a guide portion 3-1 extending smoothly to both sides of the track 3, and a limit mechanism 3-2 is arranged at the end of the track. The gas supply vehicle 1 is pushed into the gas supply control cabinet 2 from the opening along the track 3, the guide portion 3-1 has a guiding effect on the wheels 1-3 in front of the gas supply vehicle 1, and the limit mechanism 3-2 has a limiting effect on the wheels 1-3 in front of the gas supply vehicle 1, so that the gas supply vehicle 1 stops.

[0057] like Figure 8As shown in the figure, the air supply control cabinet 2 further includes a control panel 2-3, a buzzer 2-4, a start switch 2-5 and a changeover switch 2-6; the start switch 2-5 is used to control the power supply to the PLC controller, the display screen 2-2, the control panel 2-3 and the buzzer 2-4. The power supply requirement of the air supply control cabinet 2 is AC220V, 0.5kW. In this example, the start switch 2-5 is a button with a light. When the air supply control cabinet 2 is powered on, the button light of the start switch 2-5 lights up. At this time, pressing the start switch 2-5 can realize the power supply to the PLC controller, the display screen 2-2, the control panel 2-3 and the buzzer 2-4.

[0058] See Figure 11 , the electrical control schematic diagram of the air supply equipment in this example. The electrical control principle of the air supply equipment will be described below.

[0059] When the changeover switch 2-4 is in the first position, the control panel 2-3 displays the AUTO switch, that is, the current rescue personnel do not need to touch the control panel 2-3 to control the air supply control cabinet 2, and the air supply control cabinet 2 runs automatically. After the PLC controller receives the solenoid valve opening signal sent by the remote-set main control system, it controls the solenoid valve 1-2-8 to open. At this time, the air supply vehicle 1 supplies air. The pressure conversion device 1-2-2 installed in the air circuit control box 1-2 includes a pressure transmitter and an analog signal isolator connected to the pressure transmitter. The pressure transmitter converts the system pressure value into an intermediate electrical signal and transmits it to the analog signal isolator. In this example, the pressure transmitter converts the pressure signal into a 4~20mA current signal (in other embodiments, the pressure signal can also be converted into common parameters in the electrical field such as voltage and resistance). The electrical signal rectified by the analog signal isolator is sent to the PLC controller and the main control system respectively. Among them, the rectified electrical signal is sent to the PLC controller after a small time interval or in real time. The PLC controller automatically calculates the remaining usage time of the equipment according to the electrical signals received at different times before and after and displays it on the display screen 2-2. The personnel at the rescue site can intuitively observe the remaining usage time of the air supply equipment. When the current value received by the PLC controller is less than the threshold value, the PLC controller turns on the buzzer 2-4 to give an alarm. Among them, the current value being less than the threshold value means that the pressure of the air supply vehicle 1 is insufficient. Therefore, the buzzer 2-4 needs to give an alarm to warn the personnel at the rescue site; in this embodiment, the threshold value can be less than or equal to 5mA. The electrical signal rectified by the analog signal isolator is sent to the main control system. In this way, through the calculation of the main control system, the remaining usage time of the air supply equipment can be grasped synchronously. The personnel at the main control system can reasonably arrange the plan and rescue personnel to rescue the personnel at the rescue site according to the remaining usage time, achieving a better rescue effect.

[0060] When the changeover switch 2-4 is in the second position, the control panel 2-3 displays the solenoid valve control switch, and the personnel at the rescue site can turn on or off the solenoid valve 1-2-8 through the solenoid valve control switch. When the changeover switch 2-4 is in the second position, it is mainly used by technicians for equipment debugging of the air supply equipment. Or, when a fault occurs in the signal transmission between the master control system or the master control system and the air supply equipment, switch the changeover switch 2-6 to the second position, and turn on the solenoid valve 1-2-8 through the solenoid valve control switch to supply air to the personnel at the rescue site. After the solenoid valve control switch is turned on, the PLC controller receives the solenoid valve opening signal and controls the solenoid valve 1-2-8 to open. At this time, the air supply vehicle 1 supplies air. The pressure transmitter installed at the gas source end converts the system pressure value into an intermediate electrical signal and transmits it to the analog signal isolator. In this embodiment, the pressure transmitter converts the pressure signal into a current signal of 4~20mA (in other embodiments, the pressure signal can also be converted into common parameters in the electrical field such as voltage and resistance). The electrical signal after being rectified by the analog signal isolator is sent to the PLC controller. Among them, the rectified electrical signal is sent to the PLC controller after a small time interval or in real time. The PLC controller automatically calculates the remaining usage time of the equipment based on the electrical signals received at different times before and after and displays it on the display screen 2-2. The personnel at the rescue site can intuitively observe the remaining usage time of the air supply device. When the current value received by the PLC controller is less than the threshold value, the PLC controller turns on the buzzer for alarm. Among them, the current value being less than the threshold value indicates that the pressure at the gas source end of the air supply device is insufficient. Therefore, it is necessary for the buzzer to alarm to warn the personnel at the rescue site. In this embodiment, the threshold value can be less than or equal to 5mA.

[0061] In this example, the control panel 2-3, the start switch 2-5, the changeover switch 2-6, and the buzzer 2-4 are arranged above the control panel of the air supply vehicle 1.

[0062] As a preferred embodiment of this example, the air supply vehicle 1 includes three gas source cylinders 1-1. The gas source cylinders 1-1 are aluminum-lined carbon fiber composite cylinders with a water volume of 50L and a rated working pressure of 30MPa. This type of gas source cylinder has a large gas storage capacity and is especially suitable for rescuing places with a large number of people. Five pressure reducers 1-2-5 are installed in the gas circuit control box 1-2. Each gas outlet interface 1-2-3 is connected to two masks 2-1 through a threaded pipe. A mask storage box 2-7 is arranged above the air supply control cabinet 2. The masks 2-1 connected to the same gas outlet interface 1-2-3 are placed in the same mask storage box 2-7. The door of the mask storage box 2-7 is of the upward-pulling type, as Figure 7As shown, the box door is equipped with a handle, and the box door is limited by a hydraulic strut and will not fall automatically after being opened. Under full load conditions, calculated based on the per capita gas consumption of 35 L / min (this value is greater than the average value of adult men), it can be continuously used by 10 people for more than 2 hours; the air outlet interface 1-2-3 connected to the pressure reducer 1-2-5 is connected to the face mask 2-1 through a threaded pipe, facilitating the use of the face mask 2-1 within a certain distance. A supply valve is provided at the air outlet of the face mask 2-1. When the person inhales, the supply valve will be automatically opened under negative pressure for the person to breathe. The supply valve has the functions of supplying gas on demand and positive pressure, that is, when the person inhales, gas enters the face mask 2-1, and at the same time, the pressure inside the face mask 2-1 remains higher than the ambient atmosphere; when the person exhales, the supply valve does not supply gas, and the exhaled gas is discharged from the exhalation valve on the face mask 2-1, and a reciprocating breathing cycle process is formed according to this rule. During the breathing process, the person will not inhale the gas outside the gas supply device, and when the face mask 2-1 is not in use, it will not cause gas leakage in the gas supply device.

[0063] As Figure 7-8 As shown, a folding seat 2-8 is also provided on the gas supply control cabinet below the face mask storage box 2-7. When the rescue personnel sit down, the gas consumption in the gas supply device can be reduced.

[0064] It should be noted that in addition to the specific examples given above, some of the structures can have different choices. The first magnet 3 and the second magnet 4 can also be magnets of other shapes; and so on, and these can all be made by those skilled in the art based on their basic skills on the basis of understanding the idea of the present invention, so they will not be listed one by one here.

[0065] Finally, it can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, and the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the principle and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. An emergency rescue air supply device, characterized in that, Including: A gas supply vehicle and a gas supply control cabinet; the bottom of the gas supply control cabinet is integrally fixed by installing 8 floor bolts, and the gas supply vehicle can be accommodated in the gas supply control cabinet; One end of the gas supply control cabinet is provided with an opening for installing the gas supply vehicle, and a track is arranged at the bottom of the gas supply control cabinet; Near the opening end of the gas supply control cabinet, the track is provided with guiding parts that smoothly extend to both sides of the track, and a limiting mechanism is arranged at the end of the track; The gas supply vehicle includes: several gas source bottles and a gas circuit control box, and several wheels installed under the gas supply vehicle; the gas circuit control box includes: a gas supply interface communicated with the gas source bottles, a gas supply valve assembly, a pressure conversion device, several air outlet interfaces, and a power supply interface for supplying power to the pressure conversion device; the gas supply interface and the air outlet interfaces are communicated through pipelines, the gas supply valve assembly is installed on the pipelines, and the pressure conversion device is used to monitor the pressure of the gas output by the gas source bottles; an armrest and a lock are also arranged on the gas circuit control box, the armrest is used to push the gas supply vehicle to move, and after the gas supply vehicle is pushed into the gas supply control cabinet, the lock is used to lock the gas supply vehicle to the gas supply control cabinet; The gas supply control cabinet includes: several masks communicated with the air outlet interfaces, a PLC controller, a display screen, and a power supply line communicated with the power supply interface; the pressure conversion device is used to convert the pressure signal of the gas output by the gas source bottles into an electrical signal and transmit it to the PLC controller through the power supply interface, and the PLC controller is used to calculate the remaining usage time according to the electrical signal and control the display screen to display the remaining usage time.

2. The emergency rescue air supply device according to claim 1, characterized in that, Several pressure reducers are also installed in the gas circuit control box, and the pressure reducers are installed between the gas supply valve assembly and the air outlet interfaces, and are used to reduce the pressure of the gas output by the gas source bottles to a pressure suitable for breathing, and the number of the air outlet interfaces is the same as that of the pressure reducers.

3. The emergency rescue air supply device according to claim 2, characterized in that, The gas supply valve assembly includes an electric gas supply valve, a manual gas supply valve, and a solenoid valve; in the gas circuit control box, all the gas supply interfaces are communicated through pipelines, all the gas supply interfaces are respectively connected to one end of the electric gas supply valve and one end of the manual gas supply valve through pipelines, the other end of the electric gas supply valve is connected to one end of the solenoid valve through a pipeline, and the other end of the manual gas supply valve and the other end of the solenoid valve are connected to all the pressure reducers through pipelines; the solenoid valve is powered through the power supply interface, and the PLC controller controls the solenoid valve to open through the power supply interface.

4. The emergency rescue air supply device according to claim 3, wherein, The gas circuit control box also includes an inflation valve and an inflation interface, one end of the inflation valve is connected to all the gas supply interfaces through a pipeline, and the other end of the inflation valve is connected to the inflation interface through a pipeline.

5. The emergency rescue air supply equipment according to claim 4, characterized in that, The gas supply interface, the air outlet interfaces, and the inflation interface are all arranged on the outer surface of the gas circuit control box.

6. The emergency rescue air supply equipment according to claim 4, wherein, When the gas supply vehicle is placed into the gas supply control cabinet, the control panel of the gas circuit control box is located at one end of the gas supply control cabinet, and the electric gas supply valve, the manual gas supply valve, and the inflation valve are all arranged on the outer surface of the control panel.

7. The emergency rescue air supply device according to claim 2, characterized in that, The gas supply vehicle includes three gas source cylinders, which are aluminum inner liner carbon fiber composite cylinders with a water volume of 50L and a rated working pressure of 30MPa; five pressure regulators are installed in the gas circuit control box.

8. The emergency rescue air supply device according to claim 1, characterized in that, Each of the gas outlet interfaces is connected to three of the masks, and a mask storage box is provided above the gas supply control cabinet. The masks connected to the same gas outlet interface are placed in the same mask storage box.

9. The emergency rescue air supply device according to claim 8, wherein, A folding seat is also provided on the gas supply control cabinet below the mask storage box.

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