RU217721U1 - Universal human breathing simulator with a pump and a headform for dynamic testing of self-contained insulating reservoir devices with compressed air, creating a pulsating flow - Google Patents

Abstract

The utility model is intended for use in an apparatus for testing compressed air breathing apparatus with an open breathing cycle (CACB), designed to monitor the main operational parameters of CACS in stationary conditions at control posts and bases of gas and smoke protection stations (GDZS), service centers, as part of vehicle equipment GDZS. A universal human breathing simulator for dynamic testing of self-contained insulating reservoir devices with compressed air, which creates a pulsating air flow, contains a base with a human head dummy attached to it with a mouth opening pipe located in the mouth area of the human head dummy. The base is equipped with a microcontroller, a power supply, a power socket, a switch, a fitting hermetically connected to a fitting, a pressure coupling tightly connected to a pneumatic cylinder, a spring return distributor, a membrane, a mouthpiece of a human headform, a distributor with a closed central position with spring return, equipped with pneumatic silencers, and a distributor, wherein the human headform is equipped with a pumping fitting and an elastic coating, and is configured to be pumped by supplying air through the specified coupler, a distributor with a closed central position with a spring return, a distributor and a pumping fitting. Technical result is to create a universal human breathing simulator with a pump and a headform, connected to the control and measuring unit, to test compressed air breathing apparatus with an open breathing cycle, capable of creating a pulsating air flow. 3 ill.

Description

1. Technical field

This utility model is intended for use in an apparatus for testing compressed air breathing apparatus with an open breathing cycle (CASV), designed to monitor the main operational parameters of CAAS in stationary conditions at control posts and bases of gas and smoke protection stations (GDZS), service centers, as part of equipment GDZS vehicles.

2. State of the art

Compressed air breathing apparatus are designed to protect the respiratory organs and eyesight of firefighters from the harmful effects of an unbreathable, toxic and smoky gaseous environment when extinguishing fires and performing rescue operations.

In order to maintain DASA in working condition and check its properties, devices are being created to check (test) their performance.

Depending on the functional design of the installation for checking DAWS, they are divided into those used for:

static testing of breathing apparatus;

conducting dynamic tests of breathing apparatus.

The main difference between the static test and dynamic test setups for DAVS is the presence of a pump that creates a pulsating flow as part of the dynamic test device.

As analogues of the above installation, one can cite the installations "SKAD-1", "KU-9 V" and the installation according to the patent RU 211224 U1, A62 V 27/00, 05/26/2022.

"SKAD-1" is a control and measuring unit placed in a shockproof case, consisting of two autonomous units: a low pressure unit and a reduced pressure unit, a stopwatch, and also includes a human headform or a test disk that is connected to the control and measuring unit through air hoses to the coupling. The source of pressure in the low-pressure unit is a manual piston pump with a spring for returning the pump rod to the working (uppermost) position. When the pump button is pressed, pressurized air enters the pneumatic distributor, switching of which to one of its positions determines the creation of excess or vacuum pressure in the block. Excessive (vacuum) pressure is supplied from the pneumatic distributor to the coupling, to which the tested unit of the device is connected directly or through an adapter, then to the pressure vacuum gauge designed to control the pressure in the block and the pneumatic distributor designed to relieve pressure in the block. The reduced pressure of the reduced pressure unit from the airway system of the breathing apparatus enters the unit through a quick coupling. The value of the reduced pressure is controlled by a manometer. Relief of pressure in the block is carried out by a pneumatic distributor. The human headform is connected to the control and measuring unit through a coupling, while SKAD 1 does not have a device for creating a pulsating flow, which is necessary to check the operation of the reduced pressure of the DABP and the resistance in the submask space during the simulation of the user's breathing, does not make it possible to conduct dynamic checks.

"KU-9 V" is a control and measuring unit placed in a shockproof case, consisting of a pump, a distributor, a relief valve, a hose, a threaded socket, a nipple, pressure gauges, a stopwatch, a panel, as well as a model of a human head, a holder. The pump ensures the creation of an overpressure or vacuum pressure in the air duct systems of the installation, a model of a human head (test disk) and the apparatus under test. The distributor provides switching of the operating modes of the pump, as well as depressurization from the air duct systems of the unit, the human headform (test disk) and the apparatus under test. The reset valve button is designed to accurately set the pressure gauge needle to the desired pressure. The hose is designed to connect the pressure gauge of the unit with the reduced pressure line of the tested apparatus. The threaded socket is designed to connect a lung governed demand valve without excess pressure, and the nipple is designed to connect a human headform (test disc). One of the pressure gauges is designed to measure the reduced pressure of the tested apparatus. Another manometer is designed to measure the excess or vacuum pressure created in the air duct systems of the installation, the human headform (test disk) and the device being tested. The stopwatch is designed to control time when checking breathing apparatus. The holder is intended for fastening of adapters. The human headform is connected to the control and measuring unit through a coupling, while the KU-9V does not have a device for creating a pulsating flow, which is necessary to check the operation of the reduced pressure of the DAWS and the resistance in the undermask space during the simulation of the user's breathing, does not make it possible to carry out dynamic checks .

The installation according to the patent RU 211224 U1, A62 B 27/00, 05/26/2022 is a static test device for DAVS, which is a control and measuring unit located in a protective shockproof case, consisting of a high pressure gauge connected by air hoses; thrust gauge; medium pressure manometer; couplings; a distributor with a closed central position connected to an air throttle that performs the function of creating excess pressure; a distributor with a check valve equipped with a pneumatic throttle; cuplung equipped with a safety valve; a distributor with a closed central position connected to a gas ejector that performs the function of creating a vacuum; reducer; distributor with check valve for medium pressure relief; stopwatch; coupling adapter; key to control the gearbox; connection points for the high pressure line tester; at the same time, the air line connecting the cuplung with distributors with a closed central position is equipped with a microregulator; human head dummy, stored in a shockproof case, connected to the control and measuring unit with an air hose with a quick-release mechanism, including a human head model, located on the base, in which a nipple for a branch pipe, a branch pipe are mounted, while the human head dummy is equipped with a distributor with a reverse valve; fixtures for checking the high-pressure line of DABP devices connected to the control and measuring unit, consisting of a nut for adaptation to the DABP cylinder, a place for connecting to a reducer with a DABP safety valve; air hose; nuts for connecting to the connection point of the high pressure line tester. The installation according to the patent RU 211224 U1, A62 B 27/00, 05/26/2022 does not have a device for creating a pulsating flow.

The disadvantage of the above analogs is the lack of the possibility of simulating breathing (creating a pulsating flow) to check DAWS.

The technical problem is the need to create a device for testing DAWS, which creates a pulsating flow.

The technical result achieved in the utility model is to create a universal human breathing simulator with a pump and a human headform, connected to the control and measuring unit, for testing compressed air breathing apparatus with an open breathing cycle, capable of creating a pulsating air flow.

A universal human breathing simulator with a pump and a human head dummy (hereinafter referred to as a device or a universal breathing simulator) is designed to perform dynamic tests of DADS in stationary conditions at control posts and bases of gas and smoke protection stations (GDZS), service centers, as part of the equipment of GDZS vehicles.

3. Disclosure of the essence of the utility model

The essence of the utility model is to achieve the mentioned technical result by creating a universal breathing simulator with a pump and a human head model for dynamic testing of autonomous insulating reservoir devices in which the air supply is stored in a cylinder (s) in a compressed state, during which air is inhaled from cylinders , and exhalation into the atmosphere, creating a pulsating flow (hereinafter referred to as the device), connected to the control and measuring unit for checking DAVS.

The device includes a stable base with a human head dummy attached to it, with a mouthpiece located in the mouth area, a microcontroller, a power supply, a power socket, a switch, a fitting hermetically connected to a fitting, a cuplung for supplying pressure, hermetically connected to a pneumatic a cylinder, a distributor with a spring return, a membrane, a branch pipe of the mouth opening of a human headform, a distributor with a closed central position in the form of a handle with a spring return, a pneumatic silencer, a pumping fitting, a human headform equipped with a fitting for measuring excess and vacuum pressure.

In this case, in the device:

the creation of a pulsating flow is created by a pneumatic cylinder equipped with a spool-type spring return valve, controlled by a microcontroller, by changing the volume of the hollow membrane;

the pumping of the human headform is carried out by applying pressure to the pumping fitting connected to the distributor and the cuplung, by supplying air into the space between the base and the elastic coating of the human headform;

The versatility of the device lies in the ability to connect the device to known devices for testing compressed air breathing apparatus with an open breathing cycle (CABA), designed to control the main operational parameters of CABA.

Coupling, hermetically connected to:

pneumatic cylinder, spring return valve, diaphragm, mouthpiece of the headform,

a distributor with a closed central position in the form of a handle with a spring return, a pumping fitting for a human headform.

The above compounds provide the ability to simulate breathing by creating a pulsating flow and pumping a human headform.

To fix the device on the work surface, it can also be retrofitted with a bracket located on a stable base using a clamp.

4. Brief description of the drawings

In FIG. 1 shows a breathing simulator, front side view.

In FIG. 2 shows the breathing simulator, rear view.

In FIG. 3 shows a schematic diagram of the device.

In FIG. 1 shows: support 1; Pavilion 2; distributor 3; fitting 4; branch pipe of the oral opening 5; microcontroller 6; fitting 7.

In FIG. 2, depicted: a model of the head of a person 8; kuplung 9; mounting bracket 10; power socket 11; switch 12.

Schematic diagram of the device in Fig. 3 contains: fitting 4; fitting 7; kuplung 9; power socket 11; spring return distributor 13; pneumatic cylinder 14; closed center valve with spring return 15, valve with spring return 13.

The power socket 11 is intended for connecting the 12 V DC power supply and the power supply of the power supply unit 19.

Switch 12 is designed to turn on / off the power supply 19.

Mounting bracket 10 is designed to fix the device on the work surface using a clamp.

The supply of a pulsating flow is carried out as follows.

The pressure through the coupler 9 enters the pneumatic cylinder 14, equipped with a spring-return distributor 13, which creates reciprocating movements, changing the volume of the hollow membrane 17, which determines the volume of air flow directed "into" and "out" of the nozzle of the mouth opening 5, thereby creating a pulsating flow. The stroke of the pneumatic cylinder 14 is set by the microcontroller 6. The power-consuming parts of the device are powered by the power supply unit 19.

The power supply unit 19 is presented in the form of a battery that is charged from a 220 V, 50 Hz household network using a power adapter, and can also be charged from an on-board network of a 12 V DC car and a 24 V DC truck using appropriate adapters.

Pumping of the human headform 8 is carried out as follows:

The pressure through the coupling 9 enters the distributor with a closed central position with a spring return 15 equipped with air silencers 16, the distributor 3 is transferred to the pressure supply position, the pressure is applied to the booster fitting 18 to the required value. Pneumatic silencers 16 prevent the movement of air in the distributor circuit with a closed central position 15 and a pumping fitting 18. To relieve pressure in the human headform 8, the distributor 3 is moved to the pressure relief position, where pressure from the human headform is supplied to the distributor with a central position with spring return 15 8 and is discharged into the surrounding atmosphere.

The versatility of the device is confirmed by the ability to connect and work together with such installations as the installation manufactured by Tambovmash JSC (patent 211224), KU-9 V, SKAD 1.

The operation of the device when connected to the control and measuring unit is considered on the example of the installation for static checks of DAVS, the installation manufactured by Tambovmash JSC (patent 211224), without connecting the human headform included in it, and ensuring all types of dynamic tests and checks of DASA.

The device works as follows: When the device is connected to the control and measuring unit through the fitting 7 (figure 1) to the coupling of the control and measuring unit with a flexible hose and adapter. A reduced pressure line is connected to the coupler 9, compressed air is supplied to the medium (reduced) pressure gauge, the “+” distributor and the “-” distributor, with the low pressure reset button. Pneumatic cylinder 14, equipped with a return valve 13, is actuated by the “breathing” start button.

For sealing the front of the DAVS or rescue device, a distributor 3 is used (figure 1). When the distributor 3 is moved to the upper position, the rubber shell of the human headform 8 is inflated until the obturation line of the front part of the DSAV or the rescue device fits snugly. To stop the inflation, it is necessary to return the distributor 3 to its original position. When the distributor 3 is moved to the lower position, the human headform 8 will be deflated to its initial state.

For testing DAVS: the "+" distributor and the "-" distributor of the control and measuring unit are used to create excess and vacuum pressure in the measurement line. When the “+” distributor is pressed upwards, excess pressure is supplied to the undermask space supplied from the “+” distributor through the coupling of the control and measuring unit connected to fitting 7 and fitting 4. When the “+” distributor is released, the pressure in the undermask space is fixed and displayed on low pressure gauge.

When the “-” distributor is pressed, vacuum pressure is supplied to the undermask space supplied from the “-” distributor through the coupling of the control and measuring unit connected to fitting 7 and fitting 4. When the “-” distributor is released, the pressure in the undermask space is fixed and displayed on the pressure gauge low pressure control and measuring unit.

Excessive or vacuum pressure in the undermask space is created through the fitting 4 for measuring excess and vacuum pressure, located in the front part of the human headform 8 (Fig. 1).

When using the device with other control and measuring units of installations for static checks of AHSA, the device is connected using the appropriate hoses:

to the control and measuring unit through the fitting 7 (Fig. 1);

to the reduced pressure line of the DACB or a compressor with an operating pressure of not more than 1.0 MPa through the coupler 9 (Fig. 1).

The connection of the device to the control and measuring unit is carried out using a connecting flexible hose with adapters of a suitable type to a coupling or nipple, if necessary, equipped with an appropriate adapter.

Thus, a universal breathing simulator with a pump and a human headform for dynamic testing of self-contained insulating reservoir devices, in which the air supply is stored in a compressed state, presented in the present description, is capable of creating a pulsating air flow.

Claims (1)

A universal human breathing simulator for dynamic testing of self-contained insulating reservoir devices with compressed air, creating a pulsating air flow, containing a base with a human head dummy attached to it with a mouthpiece located in the mouth area of the human head dummy, characterized in that the base is equipped with a microcontroller , power supply, power socket, switch, fitting hermetically connected to the fitting, pressure coupler hermetically connected to the pneumatic cylinder, spring return valve, membrane, human headform mouthpiece, valve with a closed center position with spring return, equipped with pneumatic silencers, and a distributor, wherein the human headform is equipped with a pumping fitting and an elastic coating, and is made with the possibility of pumping by supplying air through the specified coupler, a distributor with a closed central position with a spring return, a distributor and a pumping fitting.

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