RU2225325C2 - Wet suit - Google Patents

Abstract

FIELD: emergency and rescue jobs; rescue of personnel of damaged submarine in rescue outfit. SUBSTANCE: wet suit of rescue outfit includes load-bearing envelope, bleeder valve and pressure relief unit. Pressure relief unit has body with seat and non-return valve, adjustable diaphragm with control ring, spring- loaded bellows and differential unit. Fixed bottom of bellows is secured to body. Differential unit is connected with control ring and movable bottom of bellows by means of rods. EFFECT: improved operating characteristics; enhanced safety in rescue of submarine personnel. 1 dwg

Description

 The invention relates to rescue equipment and relates to the technology of rescue personnel of an emergency submarine (PD) in rescue equipment and can be used on submarines of the Russian Navy.

 The closest of the identified analogues to the present invention is the overalls of rescue equipment, consisting of a power shell, an etching valve and a pressure relief device (RU 2110438 C1, IPC B 63 G 8/40, published on 05/10/1998 - prototype).

 However, this gidrokombineeon has low performance, since the pressure relief device is a nozzle and works on the principle of gas outflow through a given hole. The constancy of the nozzle diameter does not provide a pressure reduction (decompression mode) according to a given law, depending on the pressure in the overalls.

 The technical task of this invention is the provision of pressure relief from overalls according to the law of decompression, depending on the magnitude of the operating pressure of the overalls. The problem is achieved in that in the overalls of rescue equipment containing a power shell, an etching valve and a pressure relief device, according to the invention, the pressure relief device consists of a housing with a fitting, a flap valve, an adjustable diaphragm with a control ring, a spring-loaded bellows and a differential unit, moreover, the differential unit is connected to the control ring of the diaphragm and the moving bottom of the bellows, and the fixed bottom of the bellows is rigidly connected to the housing.

 The technical result that is obtained by implementing the present invention is to increase the operational qualities of the device, increase safety and expand the capabilities of self-rescue personnel of an emergency submarine with a minimum probability of decompression diseases.

 Schematic diagram of the overalls rescue equipment shown in figure 1.

 The overalls for rescue equipment consist of a power shell 1, a hose for filling it with air 2, an etching valve 3 and a pressure relief device that includes a housing 4 with a seat 5, a non-return valve 6, an adjustable diaphragm 7 with a control ring 8, a spring-loaded bellows 9 with a spring 10 on the working pressure of the overalls. The bellows with its fixed bottom 11 is attached to the housing, and its movable bottom 13 is connected to the differential unit 12. The differential unit 12 is connected to the control ring 8 of the diaphragm 7 and the movable bottom 13 of the bellows 9 rods 14 and 15, respectively.

 The work of overalls is as follows.

 The submariner, dressed in overalls with a power shell 1, is placed in the rescue hatch of the submarine (gateway device) and connects the hose 2 to the stationary air supply system. After filling the rescue hatch with water, compression is performed by supplying air to the power shell 1 through the hose 2.

 Excess air is etched out of the overalls through the etching valve 3 and through the permeable body 4 of the pressure relief device, the adjusted minimum opening in the diaphragm 7 and the non-return valve 6.

 When the pop-up submariner reaches a depth of 2-2.5 times the pressure for which the power shell is designed, the etching valve 3 closes. In the process of further ascent and swimming on the surface, pressure relief from the hydro-overalls (air etching) occurs only through the pressure relief device. The pressure in the overalls is continuously reduced.

 When the pressure in the overalls of the pop-up submarine is lower than the pressure (force) of the spring 10 on the movable bottom 13 of the bellows 9 under the influence of this spring, the movable bottom of the bellows and the rod 15 are displaced, which acts on the differential block 12. In turn, the signal of the differential block 12 through the rod 14 and the control ring 8 ensures the installation of the diameter of the hole required for a given pressure in the diaphragm 7, which ensures a decrease in pressure in the overalls according to the required decompression mode.

 This is how decompression of the surfaced submarine is made depending on the pressure inside the overalls.

 Thus, the described device allows rescuers to be rescued from submarine compartments from deeper depths than before and with a minimum risk of decompression diseases, the possibility of rescue by ships and vessels that are not equipped with diving altitude chambers, which currently does not provide equipment.

Claims (1)

Overalls for rescue equipment comprising a power shell, an etching valve and a pressure relief device, characterized in that the pressure relief device includes a permeable housing with a seat and a non-return valve, an adjustable diaphragm with a control ring, a spring-loaded bellows and a differential unit, the fixed bottom the bellows is attached to the housing, and the differential unit is connected by rods to the diaphragm control ring and the movable bottom of the bellows.