SU474173A1 - Gas and Heat Suit - Google Patents

Description

one

The invention relates to the means of individual gas-thermal protection of a person when working in a body in an unsuitable atmosphere for high temperature.

Gas and heat protective suits are known, which contain a combi box with a system for circulating coolant, such as water, placed on the back of a knapsack under heat protection clothing, a respiratory protection system, including breathing tubes with a bludgeon and inspiratory and expiratory valves, a regenerative cartridge, a breathing bag with a refrigerator for air and a cylinder with an oxygen supplying device and a refrigeration unit with a bulb of liquid ammonia combined with a shaft and with a heat exchanger and in series connected by a gas cavity with a refrigerant ohms in the respiratory meschke, pneumatic pump and regulator heat removal provided with a valve and valve podpruzhiiennym varying the pressure and boiling point of the refrigerant. However, in known suits, when inclining a working liquid refrigerant from a cylinder enters the vapor channels of the refrigeration unit and is thrown out, which leads to a reduction in the period of protective effect of the suit, moreover, the heat exchanger installed outside the cylinder does not provide the necessary heat exchange. Inevmonos does not provide a stable flow of coolant. A cooler mounted in a bag is ineffective because it is washed by an undirected flow of inhaled air.

In the proposed costume, a cylinder with liquid ammonia is made with a hingedly fixed central gas tube with a counterweight and a heat exchanger mounted on the inner surface, and two diaphragm pumps to circulate. (according to the principle of work in antiphase) and with a pneumatic impulse, and through a valve with a vapor tube. Tenlose regulator and pressure stabilizer are equipped with an elastic element in the form of a bellows with a spring and a valve, and a refrigerator in a breathing room is installed on the inhaled air pipe.

FIG. 1 shows a schematic diagram of a gas and heat protective suit; in fig. 2 is a schematic of a coolant circulation driver.

The suit contains a heat-insulating shell 1, overalls 2 with water now. Oh. with pipes 3 for circulating coolant connected by manifolds 4 and 5, a respiratory protection system and a refrigeration unit placed on the back in a knapsack 6 under the insulating jacket 1.

The respiratory protection system includes a half mask 7, breathing hoses 8 with valves, a regenerative cartridge 9, a breathing bag 10 with a cooler 11, an oxygen cylinder 12 with a feeding device 13. The heat exchanger 14 of the cooler 11 is included in the coolant circuit. The cooling unit contains a cylinder 15 with liquid ammonia, on the inner surface of which there are heat exchanger 16, heat removal regulator 17 and coolant circulation booster 18 with pressure stabilizer 19, containing bellows 20, spring 21, control screw 22 and valve 23. The cylinder is hinged in its center there is a gas outlet tube 24 with a counterweight 25 and an elastic hose 26. The coolant circulation booster 18 contains two membrane pumps 27 and 28 and a pneumatic pulsator consisting of a four-membrane pneumatic Orele 29 and two throttles 30 and 31. In this case, the gas cavity A of the pump 27 is connected to the outlet 32 and through the throttle 31 to the chamber B of the control of the pneumorel, and the gas cavity B of the pump 28 is connected to the outlet 33 and through the throttle 30 to the chamber D of the control of the pneumorel .

The costume is in stock.

To put the suit into operation, it is necessary to open the oxygen valve 12 and ammonia 15 cylinders. At the same time, ammonia gas through the tube 24, the elastic hose 26, through the valve of the cylinder 15, the heat removal regulator 17, the pressure stabilizer 19 and the fitting 34, is released to the atmosphere. The presence of the vapor device in the cylinder 15 with a counterweight 25 and an elastic hose ensures stable operation in any spatial position of the suit. The ammonia released from the cylinder drives a non-pump, which circulates the coolant in a closed loop, including heat exchangers 16 and 14, collectors 4, 5 and tubes 3. In tubes 3, the coolant is heated and cooled in heat exchanger 16. Thus, the heat perceived by the coolant in the tubes 3, goes to the evaporation of ammonia in the tank 15.

The magnitude of the heat sink depends on the temperature of the liquid ammonia, which, in turn, depends on the pressure in the cylinder 15, which is regulated by the regul. and 17 heat removal. Ammonia enters the pneumatic pump at constant pressure due to stabilizer 19, which is pre-adjusted to the required pressure level. Ammonia enters the pneumatic pump through pipe 35, and the exhaust gas leaves through pipe 36 and through nozzle 34 into the atmosphere. Pumps 27 and 28 of coolant circulation promoters operate in antiphase, which is necessary for a closed loop.

FIG. 2 shows the moment when in the pump

27, a pumping phase occurs, and in the pump

28-phase suction. The operation of pumps 27 and 28 is provided by a pulsator, which in turn communicates the gas cavities A to B with the atmosphere and with the power line. Coordination of pump operation in antiphase is achieved by 30 and 31 throttles.

When the breathing system is in operation, the inhaled air passes through the exhalation valve 37, the regenerative cartridge 9, the cooler I, and enters the breathing bag 10, where it is mixed with oxygen coming from

cylinder 12. When you inhale the air from the bag 10 through the refrigerator And, the valve 38 of the breath and breathing hoses enters the half mask 7.

Subject invention

Gas and heat protection suit containing a heat insulating jacket, water-cooled overalls, a respiratory protection system and a refrigeration unit with a cylinder of liquid ammonia, a heat exchanger, a pneumatic pump, a coolant circulation activator and a heat removal and pressure regulator, characterized in that in order to reduce the temperature of the respirator and improve performance, in it the ammonia cylinder is made with an articulated central gas tube with a counterweight and a heat exchanger,

installed on the internal surface, and two diaphragm pumps of the coolant circulation promoter are interconnected with both a pneumatic puller and a valve with the venting tube, with the heat removal regulator and pressure stabilizer supplied with ke1; bellows with a spring and a valve, and the refrigerator in the breathing bag is installed on the intake air tube.

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