RU226428U1 - Device for static testing of self-contained insulating tank devices with compressed air - Google Patents

Abstract

The utility model relates to devices for static testing of self-contained isolating tank apparatus with compressed air and is used to test breathing apparatus with compressed air with an open breathing cycle (DASV). A device for static testing of autonomous insulating tank devices with compressed air, with cylinders for storing a supply of air in a compressed state, made with the ability to inhale air from the cylinders and exhale into the atmosphere, consisting of a control and measuring unit with a coupling located in a protective shockproof case, and located on the base of the mannequin head with a mouth opening pipe, which is connected to the control and measuring unit by a flexible hose with a quick-release mechanism, hermetically connecting the mouth opening pipe and a coupling through a nipple, characterized in that it is equipped with a hose for connecting to a source of compressed air, The control and measuring unit is equipped with a medium pressure sensor, a microcompressor, a low pressure sensor, a coupling, a medium pressure relief valve, an overpressure set valve, a vacuum pressure set valve, a quick low pressure relief valve, a slow low pressure relief valve, hermetically sealed air hoses, a microcontroller , a power supply and a display for controlling the device and for monitoring the testing and test result of self-contained isolating tank apparatus with compressed air, the head dummy being equipped with a mechanical pneumatic valve for inflating the head dummy. The technical result consists in expanding the arsenal of means for static testing of autonomous insulating tank devices with compressed air. 3 ill.

Description

Field of technology

This utility model is used to test open-circuit compressed air breathing apparatus (OACB).

State of the art

In Russian legislation, DASV verification is carried out in accordance with clauses 7.5, 7.7 of GOST R 53255-2019 “National Standard of the Russian Federation. Fire equipment. Breathing apparatus with compressed air and open breathing cycle. General technical requirements. Test methods”, as well as GOST R 53262-2019 “National Standard of the Russian Federation. Fire equipment. Installations for testing breathing apparatus. General technical requirements. Test methods".

The DASV verification installation must ensure the following checks:

excess air pressure in the under-mask space of the front part at zero air flow;

tightness of the air duct system of the breathing apparatus;

reduced pressure;

opening pressure of the exhalation valve of the front part;

tightness of the front part under vacuum pressure;

tightness of the air duct system of the rescue device at vacuum pressure;

opening pressure of the pulmonary valve of the rescue device.

As examples of the implementation of the above-mentioned installation, one can cite the “SKAD-1” and “KU-9V” installations and the installation patent No. 211224, which are also analogues of this utility model.

"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 dummy of a human head or a test disk, which 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 operating (uppermost) position. When you press the pump button, air under pressure is supplied to the pneumatic distributor, switching which to one of its positions determines the creation of excess or vacuum pressure in the block. From the pneumatic distributor, excess (vacuum) pressure is supplied to the coupling, to which the unit being tested is connected directly or through an adapter, then to a pressure-vacuum gauge designed to control the pressure in the block and a pneumatic distributor designed to relieve pressure in the block. The reduced pressure of the reduced pressure unit from the air duct system of the breathing apparatus enters the unit through a quick connector. The amount of reduced pressure is controlled by a pressure gauge. The pressure in the block is relieved by a pneumatic distributor.

“KU-9V” is a control and measuring unit placed in a shockproof case, consisting of a distributor pump, a relief valve, a hose, a threaded socket, a nipple, pressure gauges, a stopwatch, a panel, as well as a headform and a holder. The pump ensures the creation of excess or vacuum pressure in the air duct systems of the installation, dummy (test disk) and the device being tested. The distributor provides switching of pump operating modes, as well as releasing pressure from the air duct systems of the installation, the dummy (test disk) and the device being tested. The reset valve button is designed to accurately set the pressure gauge needle to the desired pressure. The hose is designed to connect the installation pressure gauge to the reduced pressure line of the device being tested. The threaded socket is intended for connecting the lung demand valve without excess pressure, and the nipple is for connecting a dummy (test disk). One of the pressure gauges is designed to measure the reduced pressure of the device being tested. Another pressure gauge is designed to measure the excess or vacuum pressure created in the air duct systems of the installation, the dummy (test disk) and the device being tested. The stopwatch is designed to control the time during testing of breathing apparatus. The holder is designed for attaching adapters.

According to patent RU211224U1, a device is known for static testing of autonomous insulating tank devices with compressed air, in which the air supply is stored in a cylinder(s) in a compressed state, during which air is inhaled from the cylinders and exhaled into the atmosphere, consisting of:

a control and measuring unit located in a protective shockproof case, consisting of a high-pressure pressure gauge connected through air hoses; thrust gauge; medium pressure gauge; couplings; a distributor with a closed central position connected to a pneumatic 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, performing the function of creating a vacuum; gearbox; distributor with a check valve to relieve medium pressure; stopwatch; coupling adapter; key for controlling the gearbox; connection points for the device for checking the high pressure line; in this case, the air line connecting the cuplung with distributors with a closed central position is equipped with a microregulator;

a human head dummy, stored in a shock-proof case, connected to the control and measuring unit by an air duct hose with a quick-release mechanism, including a human head dummy located on the base in which a nipple for a pipe, a pipe are mounted, while the human head dummy is equipped with a distributor with a reverse valve;

devices for checking the high pressure line of DASV devices connected to the control and measuring unit, consisting of a nut for adaptation to the DASV cylinder, a place for connection to the reducer with the DASV safety valve; air hose; nuts for attaching to the connection point of the device for checking the high pressure line.

The disadvantage of the above analogues is the low automation of the DASV verification processes, the need to perform additional actions to measure time on a stopwatch, and control indicators using pressure gauges.

The technical problem is to create a device with an increased level of automation, as well as to reduce the operations performed by the operator performing the above checks of the DASV installation.

The technical result achieved in the utility model is to expand the arsenal of means for a specific purpose that implement the purpose specified in the name of the utility model.

Disclosure of the essence of the utility model

The essence of the utility model is to achieve the mentioned technical result by creating a device for static testing of autonomous insulating tank devices in which the air supply is stored in a cylinder(s) in a compressed state, during which air is inhaled from the cylinders and exhaled into the atmosphere (hereinafter referred to as the device ), consisting of a control and measuring unit located in a shockproof protective case, and a mannequin of a human head.

In this case, in the device:

The control and measuring unit consists of a connection point to the DASV reducer, a medium pressure sensor, a medium pressure relief valve, a microcompressor connected to an overpressure set valve, a vacuum pressure set valve, a low pressure fast release valve, a low pressure slow release valve, a low pressure sensor , coupling, as well as a microcontroller, power supply and display for controlling the device, as well as monitoring the process and result of the DASV test;

the mannequin head is connected to the control and measuring unit by a flexible hose with a nipple, consisting of a hermetically connected mouthpiece with a coupling, a distributor with a check valve of the human head mannequin, for inflation of which the pressure of a DASV cylinder is used, or another source of compressed air and a stable base .

Brief description of drawings

In fig. 1 shows a schematic diagram of the control and measuring unit of the device.

In fig. Figure 2 shows the appearance of the control and measuring unit of the device.

In fig. Figure 3 shows the appearance of a mannequin of a human head.

The schematic diagram of the control and measuring unit of the device (Fig. 1) contains a source of compressed air - 1; sealed low pressure air duct system - 2; average pressure sensor - 3; low pressure sensor - 4; microcompressor - 5; coupling - 6; medium pressure relief valve -7; overpressure set valve - 8; vacuum pressure set valve - 9; low pressure quick release valve - 10; low pressure slow release valve - 11, hose connecting to the compressed air source - 15, medium pressure air line - 20.

The appearance of the control and measuring unit in Fig. 2 contains a clutch - 6, a power button - 12, a shockproof case - 13; display - 14; hose connecting to the compressed air source - 15.

Mannequin of a human head in Fig. 3 contains a mannequin of a human head - 16; mouth opening pipe - 17; stable base - 18; lever for inflating the human head dummy - 19.

Implementation of a utility model

The device is a control and measuring unit (Fig. 1, 2), placed in a shockproof case, which includes a sealed medium pressure air duct system 20 connecting the average pressure sensor 3, the average pressure relief valve 7 and the hose 15 connecting to the compressed air source, as well as a sealed low pressure air duct system 2 connecting coupling 6 for connecting the head dummy, low pressure sensor 4, microcompressor 5, overpressure set valve 8, vacuum pressure set valve 9, low pressure quick release valve 10, low pressure slow release valve 11 ; microcontroller controlling microcompressor 5, receiving data from medium pressure sensor 3 and low pressure sensor 4, controlling valves 7 medium pressure release, 8 overpressure set, 9 vacuum pressure set, 10 fast low pressure release, 11 slow low pressure release, display 14 and power supply.

The source of compressed air 1 is the DASV device, in the cylinder of which compressed air is stored.

Coupling 6 is designed to connect the DASV with a flexible sealed connection of the nipple for the pipe 17 of the mannequin head, using a quick-release mechanism.

The hose 15 for connecting to the source of compressed air is the point of connection to the source of compressed air, and is the point of connection to the DASV gearbox, through a quick-release mechanism.

Microcompressor 5 means a membrane air pump, voltage of at least 12 V (DC), air flow rate of at least 0.4 l/min.

Valves 7, 10, 11 are normally closed solenoid valves (12 V DC).

Valves 8 and 9 are three-way solenoid valves (12 V DC).

The connected human head dummy (Fig. No. 3) is a human head dummy 16 located on a stable base 18, on which a nipple for the head dummy pipe 17 is mounted, a nipple for inflating the head dummy located between the base of the head dummy and the flexible shell of the head dummy, for inflating head dummy, as well as lever 19 for inflating the head dummy, a mechanical pneumatic valve, a connection line to a source of compressed air.

The coupling 6 is connected to the nipple of the human head dummy, hermetically connected to the pipe 17 of the mouth opening, which makes it possible to supply air flow to the under-mask part for carrying out DASV checks. The coupling 6 is connected to the human head dummy by connecting the hose to the dummy's nipple.

Inflating the head dummy is carried out with compressed air from a compressed air source (for example, a compressor, receiver, DASV cylinder) connected to the nipple for inflating the head dummy.

The human head dummy inflation lever 19 is a manual distributor with a check valve connected to the human head dummy inflation nipple.

The device works as follows:

When connecting the DASV to the hose 15 for connecting to the compressed air source, the air duct system connecting the average pressure sensor 3 and the average pressure relief valve 7 is filled. The medium pressure sensor 3 measures the pressure in the medium pressure duct system and transmits the received data to the microprocessor. The microprocessor displays the received data on the display 14. The medium pressure relief valve 7 relieves pressure from the medium pressure air duct system 20 connecting the average pressure sensor 3 and the hose 15 connecting to the compressed air source.

Microcompressor 5, receiving the operator's order, carries out a set of vacuum pressure, removing (pumping out) from the low pressure air duct system 2, which includes an excess pressure set valve 8 in the closed position, a vacuum pressure set valve 9 in the open position, a slow low pressure release valve 11, in the closed position, the low pressure quick release valve 10 in the closed position, the low pressure sensor 4, as well as the coupling 6 connected by a flexible sealed connection to the pipe 17 of the mouth opening of the mannequin head via a nipple.

Microcompressor 5, receiving the operator's order, carries out a set of excess pressure, pumping air into the low pressure air duct system 2, which includes an excess pressure set valve 8 in the open position, a vacuum pressure set valve 9 in the closed position, a low pressure slow release valve 11 in the closed position , a low pressure quick release valve 10 in the closed position, a low pressure sensor 4, as well as a coupling 6 connected by a flexible sealed connection to the pipe 17 of the mouth of the mannequin head via a nipple.

On the control panel of the control and measuring unit of the device (Fig. 1) there is a display 14, through which the operator gives the task (controls) of checking the DASV, and also monitors the process and result of checking the DASV.

The device is powered by a power supply, for example a battery, or from a household network via a power supply that supplies power to the display 14, microcontroller, microcompressor 5, as well as valves 7-11.

Example 1.

When checking the tightness of the device with overpressure, the device operates as follows:

Power is supplied to the control and measuring unit by turning on button 12. A sealed plug is tightly screwed into pipe 6 of the control and measuring unit.

The operator selects the required command “(+)” on the display 14 of the control and measuring unit.

The test begins in automatic mode, the microcontroller issues electrical signals to the valves and microcompressor, and also reads sensor readings and displays the test result on display 14.

The microcompressor 5 creates excess pressure in a sealed low-pressure air duct system 2 connecting the excess pressure set valve 8, the vacuum pressure set valve 9, the low pressure slow release valve 11, the low pressure fast release valve 10, the low pressure sensor 4, the coupling 6. During to set excess pressure, valves 7, 9, 10, 11 are in the closed position, valve 8 is in the open position.

When the pressure specified in the installation settings is reached, plus 50 Pa, the microcompressor turns off. The controller regulates the required pressure in the low-pressure air duct system 2 by controlling the low-pressure slow release valves 11, the excess pressure set valve 8 and the microcompressor 5. When the required pressure value is reached, the dwell time countdown timer is automatically started, after holding the pressure is released to values approximate to the set ones and the check timer starts (pressure changes in system 2). After the specified time has elapsed, the result of checking the tightness of the installation is displayed on the display 14 of the control and measuring unit in the form of a message:

“Sealed. Difference: NN Pa" or "Not sealed. Difference: NN Pa.”

After the test is completed, the pressure is automatically released by opening the low pressure quick release valve 10.

Example 2.

When checking the tightness of the device using vacuum pressure, the device operates as follows:

Power is supplied to the control and measuring unit by turning on button 12. A sealed plug is tightly screwed into pipe 6 of the control and measuring unit.

The operator selects the required command “(-)” on the display 14 of the control and measuring unit.

The test begins in automatic mode, the microcontroller issues electrical signals to the valves and microcompressor, and also reads readings from sensors and displays the test result on display 14.

The microcompressor 5 creates a vacuum pressure in a sealed low-pressure air duct system 2 connecting the excess pressure set valve 8, the vacuum pressure set valve 9, the low pressure slow release valve 11, the low pressure quick release valve 10, the low pressure sensor 4, the coupling 6. During When vacuum pressure is set, valves 7, 8, 10, 11 are in the closed position, valve 9 is in the open position.

When the pressure specified in the installation settings reaches minus 50 Pa, the microcompressor turns off. The controller regulates the required pressure in the low-pressure air duct system 2 by controlling the low-pressure slow release valves 11, the vacuum pressure set valve 9 and the microcompressor 5. When the required pressure value is reached, the dwell time countdown timer is automatically started, after holding the pressure is released to values approximate to the set ones, and the check timer starts (pressure changes in system 2). After the specified time has elapsed, the result of checking the tightness of the installation is displayed on the display 14 of the control and measuring unit in the form of a message:

“Sealed. Difference: NN Pa" or "Not sealed. Difference: NN Pa.”

After the test is completed, the pressure is automatically released by opening the low pressure quick release valve 10.

Example 3.

When checking the opening pressure of the lung demand valve and the excess air pressure in the submask space, which the lung demand valve can provide at zero air flow and the tightness of the DASV air duct system, the device operates as follows:

The control and measuring unit is supplied with power by turning on the power button 12. The control and measuring unit is connected to the medium pressure line DASV via a hose 15. A plug with a fitting is tightly screwed into the coupling 6 for connecting a flexible sealed hose to the pipe 17 of the mouth opening of the mannequin head via a nipple .

The front part of the tested DASV device is put on the head dummy 16, which is connected to the DASV device according to its own operating instructions. The DASV lung demand valve must be closed.

The valve of the DASV cylinder opens. By means of a manual valve 19, excess pressure is created in the shell of the dummy 16, ensuring a tight fit of the front part of the DASV to the dummy 16.

Thus, the under-mask space of the front part of the test DASV, put on the dummy 16, forms a sealed volume with a low-pressure air duct system 2 connecting the excess pressure set valve 8, the vacuum pressure set valve 9, the low pressure slow release valve 11, the low pressure quick release valve 10 pressure, low pressure sensor 4, coupling 6.

Next, the operator selects the required command on the display 14 of the control and measuring unit “(-)”.

The test begins in automatic mode, the microcontroller sends electrical signals to the valves (8, 9, 10, 11) and microcompressor 5, and also reads the readings of sensor 4 and displays the test result on display 14.

The microcompressor 5 creates a vacuum pressure in a sealed low-pressure air duct system 2 connecting the excess pressure set valve 8, the vacuum pressure set valve 9, the low pressure slow release valve 11, the low pressure quick release valve 10, the low pressure sensor 4, the coupling 6, through which The submask space of the front part of the DASV is connected to system 2. During the build-up of vacuum pressure, valves 7, 8, 10, 11 are in the closed position, valve 9 is in the open position.

The opening pressure of the lung demand valve is considered to be the maximum vacuum pressure recorded by the low pressure sensor 4, displayed on the display 14.

The air pressure in the submask space, which can be provided by the lung demand valve at zero air flow and the tightness of the DASV air duct system, is considered to be the positive pressure recorded by the low pressure sensor 4 after the lung demand valve is opened.

Display 14 will display the test result in the form of a message:

“The opening lay down. machine NNN Pa;

Undermask pressure NNN Pa.”

Example 4. When checking the tightness of the medium pressure air duct system of a breathing apparatus, the device operates as follows:

Power is supplied to the control and measuring unit by turning on button 12.

The DASV cylinder reducer is connected to hose 15 connecting to the compressed air source. The valve of the DASV cylinder opens the flow of compressed air located in the cylinder, while the air fills the medium pressure air line 20 connecting the average pressure sensor 3 and the average pressure relief valve 7, which is in the closed position. The valve of the DASV cylinder closes. The average pressure values received by sensor 3 are transmitted to the microcontroller and the average pressure value is displayed on display 14.

The operator starts the time countdown by pressing the “stopwatch” icon on the display 14 and observes the readings of the DASV high-pressure pressure gauge. The result of the test is the actual change in pressure during the measurement time established by the requirements of regulatory documentation.

The pressure in the system is relieved through valve 7 for quick release of medium pressure. To release the average pressure (open valve 7), the operator presses and holds the “Reset average pressure” button on the touch display 14

Example 5. When checking the value of the reduced (average) pressure, the device operates as follows:

Power is supplied to the control and measuring unit by turning on button 12.

The DASV cylinder reducer is connected to hose 15 connecting to the compressed air source. The valve of the DASV cylinder opens the flow of compressed air located in the cylinder, while the air fills the sealed medium pressure air line 20 connecting the average pressure sensor 3 and the average pressure relief valve 7, which is in the closed position. The data received by the average pressure sensor 3 is transmitted to the microcontroller and the average pressure measurement readings are displayed on the display 14.

After checking, the valve of the DASV cylinder is closed, the pressure in the system is relieved using valve 7 for quick release of medium pressure. To release the average pressure (open valve 7), the operator presses and holds the “Reset average pressure” button on the touch display 14.

Example 6. When checking the opening pressure of the front exhalation valve, the device operates as follows:

The control and measuring unit is supplied with power by turning on button 12. The control and measuring unit is connected to the DASV medium pressure line via hose 15. Dummy 16 is connected via a flexible hose with a plug to the fitting in coupling 6 of the control and measuring unit.

The front part of the tested DASV device is put on the head dummy 16, which is connected to the DASV device according to its own operating instructions. The valve of the DASV cylinder opens. By means of a manual valve 19, excess pressure is created in the shell of the dummy 16, ensuring a tight fit of the front part of the DASV to the dummy 16.

Thus, the under-mask space of the front part of the tested DASV put on the dummy 16 forms a sealed volume with the low pressure air line 2 connecting the excess pressure set valve 8, the vacuum pressure set valve 9, the low pressure slow release valve 11, the low pressure fast release valve 10, low pressure sensor 4, coupling 6.

Next, the operator selects the required command on the display 14 of the control and measuring unit “(-)”. At the same time, the opening pressure of the lung demand valve is checked in accordance with the description given in Example 3.

Display 14 will display the test result in the form of a message:

“The opening lay down. machine NNN Pa;

Undermask pressure NNN Pa.”

After the test is completed, the low pressure quick release valve 10 automatically opens.

Next, the operator selects the required command on the display 14 of the control and measuring unit “(+)”.

The test begins in automatic mode, the microcontroller issues electrical signals to the valves and the compressor, and also reads the readings of sensor 4, displaying the test result on display 14.

Microcompressor 5 creates excess pressure in the submask space of the front part and in the sealed low-pressure air duct system 2.

Valves 9, 10, 11 are in the closed position. Valve 8 is in the open position. Low pressure sensor 4 records the maximum value of excess pressure before the opening of the exhalation valve of the front part of the DASV, which is recorded when the increase in pressure by the low pressure sensor stops.

Display 14 will display the test result in the form of a message:

“Exhalation valve opening NNN Pa.”

Example 7. When checking the tightness of the front part under vacuum pressure, the device operates as follows:

The control and measuring unit is supplied with power by turning on button 12. The control and measuring unit is connected to the DASV medium pressure line via hose 15. The dummy nipple 16 is connected via a flexible hose to coupling 6 of the control and measuring unit.

The front part of the DASV device being tested is put on the head dummy 16. A plug is installed in the connection socket of the DASV lung machine. By means of a manual valve 19, excess pressure is created in the shell of the dummy 16, ensuring a tight fit of the front part of the DASV to the dummy 16.

Thus, the under-mask space of the front part of the test DASV, put on the dummy 16, forms a sealed volume with the low pressure air line 2 connecting the excess pressure set valve 8, microcompressor 5, vacuum pressure set valve 9, low pressure slow release valve 11, valve 10 quick release of low pressure, low pressure sensor 4, coupling 6.

Next, the operator selects the required command on the display 14 of the control and measuring unit “(-)”.

The test begins in automatic mode, the microcontroller issues electrical signals to the valves and microcompressor 5, and also reads readings from the sensors, displaying the test results on display 14.

The microcompressor 5 creates a vacuum pressure in the under-mask space of the front part and in the low-pressure air duct system 2 connecting the vacuum pressure set valve 9, the excess pressure set valve 8, the low pressure slow release valve 11, the low pressure quick release valve 10, the low pressure sensor 4, coupling 6 connected by a nipple to the pipe 17 of the mouth opening. During the build-up of vacuum pressure, valves 8, 10, 11 are in the closed position, valve 9 is in the open position.

When the pressure specified in the installation settings reaches minus 50 Pa, the microcompressor turns off. The controller regulates the required pressure in the low-pressure system 2 by controlling the low-pressure slow release valves 11, the vacuum pressure set valve 9 and the microcompressor 5. When the required pressure value is reached, the holding time countdown timer automatically starts, after holding, the pressure is released to values close to set, and the test timer starts (pressure changes in system 2). After the specified time has elapsed, the result of checking the tightness of the front part is displayed on the display 14 of the control and measuring unit in the form of a message:

“Sealed. Difference: NN Pa" or "Not sealed. Difference: NN Pa.”

After the test is completed, the pressure is automatically released by opening the low pressure quick release valve 10.

Example 8. In order to check the tightness of the air duct system of a rescue device at vacuum pressure, the device operates as follows:

The control and measuring unit is supplied with power by turning on button 12. The control and measuring unit is connected to the DASV medium pressure line via hose 15. The dummy nipple 16 is connected via a flexible hose to coupling 6 of the control and measuring unit.

The front part of the rescue device with a lung demand valve is put on the head dummy 16. Plug the pulmonary valve hose of the rescue device. The valve of the DASV cylinder opens. By means of a manual valve 19, excess pressure is created in the shell of the dummy 16, ensuring a tight fit of the front part of the rescue device to the dummy 16.

Thus, the under-mask space of the front part of the rescue device being tested, put on the dummy 16, forms a sealed volume with the low pressure air line 2 connecting the overpressure set valve 8, microcompressor 5, vacuum pressure set valve 9, low pressure slow release valve 11, valve 10 quick release of low pressure, low pressure sensor 4, coupling 6.

The operator selects the required command “(-)” on the display 14 of the control and measuring unit.

The test begins in automatic mode, the microcontroller issues electrical signals to the valves and microcompressor 5, and also reads readings from sensor 4 and displays the test result on display 14.

The microcompressor 5 creates a vacuum pressure in a sealed low-pressure air duct system 2 connecting the excess pressure set valve 8, the vacuum pressure set valve 9, the low pressure slow release valve 11, the low pressure quick release valve 10, the low pressure sensor 4, the coupling 6. During When vacuum pressure is set, valves 8, 10, 11 are in the closed position, valve 9 is in the open position.

When the pressure specified in the installation settings reaches minus 50 Pa, the microcompressor turns off. The controller regulates the required pressure in system 2 by controlling the low pressure slow release valves 11, the vacuum pressure set valve 9 and the microcompressor 5. When the required pressure value is reached, the dwell time countdown timer is automatically started, after holding the pressure is released to values close to the set ones, and the check timer starts (pressure changes in system 2). After the specified time has elapsed, the result of checking the tightness of the installation is displayed on the display 14 of the control and measuring unit in the form of a message:

“Sealed. Difference: NN Pa" or "Not sealed. Difference: NN Pa.”

After the test is completed, the pressure is automatically released by opening the low pressure quick release valve 10.

Example 9. In order to check the opening pressure of the lung demand valve of a rescue device, the device operates as follows:

The control and measuring unit is supplied with power by turning on button 12. The control and measuring unit is connected to the DASV medium pressure line via hose 15. The dummy nipple 16 is connected via a flexible hose to coupling 6 of the control and measuring unit.

The front part of the tested DASV device is put on the head dummy 16, which is connected to the DASV device according to its own operating instructions. The DASV lung demand valve is switched on. The valve of the DASV cylinder opens. By means of a manual valve 19, excess pressure is created in the shell of the dummy 16, ensuring a tight fit of the front part of the DASV to the dummy 16.

Thus, the under-mask space of the front part of the test DASV, put on the dummy 16, forms with a sealed low-pressure air line 2 connecting the excess pressure set valve 8, microcompressor 5, vacuum pressure set valve 9, slow low pressure release valve 11, quick low pressure release valve 10 , low pressure sensor 4, sealed volume coupling 6.

Next, the operator selects the required command on the display 14 of the control and measuring unit “-”.

The test begins in automatic mode, the microcontroller issues electrical signals to the valves and microcompressor 5, and also reads the readings of sensor 4, displaying the test result on display 14.

The microcompressor 5 creates a vacuum pressure in the submask space by creating a low pressure 2 in a sealed air duct system connecting the vacuum pressure set valve 9, the excess pressure set valve 8, the low pressure slow release valve 11, the low pressure quick release valve 10, the low pressure sensor 4, coupling 6 connected by a nipple to the pipe 17 of the mouth opening.

Upon reaching the value of the vacuum pressure created by the microcompressor 5, when the pressure stops falling and begins to rise, which is displayed and recorded on the time display 14, a pressure release command is given after recording the necessary data.

The low pressure quick release valve 10 is used to relieve the excess pressure to zero values immediately after the test.

Thus, the device for static testing of self-contained insulating tank devices with compressed air, in which the air supply is stored in a compressed state, presented in this description is capable of performing static checks of DASV, expanding the arsenal of means for a specific purpose specified in the title of this utility model.

Claims (1)

A device for static testing of autonomous insulating tank devices with compressed air, with cylinders for storing a supply of air in a compressed state, made with the ability to inhale air from the cylinders and exhale into the atmosphere, consisting of a control and measuring unit with a coupling located in a protective shockproof case, and located on the base of the mannequin head with a mouth opening pipe, which is connected to the control and measuring unit by a flexible hose with a quick-release mechanism, hermetically connecting the mouth opening pipe and a coupling through a nipple, characterized in that it is equipped with a hose for connecting to a source of compressed air, The control and measuring unit is equipped with a medium pressure sensor, a microcompressor, a low pressure sensor, a coupling, a medium pressure relief valve, an overpressure set valve, a vacuum pressure set valve, a quick low pressure relief valve, a slow low pressure relief valve, hermetically sealed air hoses, a microcontroller , a power supply and a display for controlling the device and for monitoring the testing and test result of self-contained isolating tank apparatus with compressed air, the head dummy being equipped with a mechanical pneumatic valve for inflating the head dummy.