RU2521328C2 - Device for protection of fire-fighter from thermal radiation - Google Patents

Abstract

FIELD: fire-fighting equipment.

SUBSTANCE: device for protection of fire-fighter from thermal radiation can be used in open area, as well as indoors and enables the fire-fighter in fire fighting gear stay in the fire zone for a long time. The device is made from the pivotally interconnected sections. The sections are the mesh panels mounted with a gap between them, between which the nozzles are located, connected with the pipe to the fire-hose barrel and fire hose.

EFFECT: invention enables to make the device compact, to simplify its design, to improve reliability and to reduce weight.

12 cl, 8 dwg

Description

The invention relates to fire fighting equipment and can be used in fires to protect the firefighter from thermal radiation, performing combat operations with a manual fire barrel. The screen can be used in open areas, as well as in enclosed spaces and allows a firefighter in military clothing for a long time to be in the fire zone.

Of the known devices for protection against thermal radiation, the closest in technical essence is a device for protecting the fire barrel operator, comprising a spraying unit made in the form of a frame of interconnected pipes with holes in which nozzles are installed. The specified node spraying (frame) is located on a support connected to the body of the fire barrel. Mesh panels are fixed on the frame from two sides at a distance from each other. An opening for the fire barrel is made in the central part of the frame. To ensure the protective functions of the device, water is supplied to the pipes of its frame, which enters the nozzles installed in the holes of the frame and is sprayed by the nozzles in the space between the mesh panels, creating a vapor-droplet-air medium in the space between these panels and water films on these panels ( RU patent No.IAR02163, A62C 2/08, 35/68).

The disadvantages of this device are the large weight and bulkiness, which limits the possibility of its use, and high requirements for the integrity and tightness of the frame, due to the supply of water through the frame, in the openings of which nozzles are installed. These shortcomings complicate the design, reduce its reliability and create difficulties in delivering the screen to the place of fire and in its use: special means are necessary for transporting the device, it is impossible to move with the screen in narrow passages (for example, along staircases, narrow corridors, through doorways into buildings), the device has poor maneuverability when performing combat operations with a fire barrel.

In addition, the use of water from the general water supply system reduces the reliability of the device due to the possibility of clogging nozzles when using insufficiently clean water.

Placing an opening for the fire barrel in the center of the structure makes it difficult to manipulate the barrel.

The objective of the present invention is to reduce weight and simplify the design while increasing reliability, making the device compact so that it can be transported without special means, moving in narrow aisles and used to extinguish fires inside buildings, and expanding the capabilities of the device by increasing its maneuverability during combat operations with fire barrel.

The problem is solved in that in a device for protecting a firefighter from thermal radiation, comprising a frame with an aperture to enable placement of a fire barrel connected to a fire hose, mesh panels installed on both sides of the frame with a gap between each other, and a water irrigation system including nozzles, the frame is made of at least two sections pivotally connected to each other and provided with a latch, the nozzles of the water irrigation system located between the panels are mounted on the frame and t the piping is connected to a coupling, the ends of which are equipped with heads designed for connection with a fire barrel and a fire hose.

The task is also solved by the fact that:

- a filter mesh is installed in the coupling;

- the device further comprises a filter that is mounted in the water irrigation system;

- nozzles are installed in the center of the upper section;

- in the upper part of the upper section there are two oppositely directed nozzles, one of which is directed up and the second down the device;

- in the lower part of the upper section one nozzle is installed, directed down the device;

- an aperture for providing the possibility of placing a fire barrel is made at the end of the upper section;

- the lower part of the lower section is solid;

- the device is equipped with a support made in the form of legs installed with the possibility of rotation in a horizontal plane;

- the device is equipped with a handle designed for carrying it in the folded position and fixed in the center of the lower section from the outside;

- the device is equipped with an additional handle fixed in the upper section perpendicular to its surface;

- a groove is made in the lower section to accommodate the additional handle.

A separate piping system for supplying water to the nozzles can significantly reduce the weight and dimensions of the device and simplify its manufacture. The frame performs only the functions of the bearing element, and its large diameter pipes are not filled with water during operation of the device, which leads to a decrease in the weight of the device and increases its maneuverability when performing military operations with a fire barrel. In addition, it becomes possible to divide the frame into two sections connected to each other, which can be folded. The implementation of the device in the form of a folding structure significantly reduces its dimensions and allows you to move with it in narrow passages and use it when fighting fires inside buildings. Reducing the dimensions of the device due to the folding frame also eliminates the need for special means of transportation of the device, now the fireman can accommodate with the device in the cab of the fire truck.

Protection from thermal radiation is carried out by the device due to attenuation of thermal radiation by nets, between which water is sprayed using nozzles. Water supplied to the nets enters the nozzles simultaneously with the entry into the fire barrel. Its supply to the proposed device is regulated directly by the fireman himself, who connects the device immediately before work, which facilitates working with the device (the lack of water when carrying the device reduces its weight), reduces water consumption and expands the device's capabilities (water supply to the device, if necessary, disable). The presence of a filter mesh and an additional filter allows you to purify water, which prevents the possibility of clogging of nozzles and, therefore, increases the reliability of the device. In addition, the proposed water purification system allows you to use any of its sources (work is carried out when water is supplied from a fire water supply system, or using a fire truck, or a pump installation from a fire tank or an open reservoir), which also expands the capabilities of the device.

The number of nozzles and their direction allows you to fully protect the firefighter from thermal radiation.

The implementation of the open opening for the fire barrel in the lateral part of the structure makes it easier to maneuver the barrel.

The execution in the lower part of the section of solid panels prevents damage to the panels by a fireman when using the device and, in addition, due to the convenience of its device.

Providing handles to the device facilitates its movement.

The invention is illustrated in graphic materials. In Fig.1 shows a front view of the device, Fig.2 is a side view of the device, Fig.3 is a rear view of the device, Fig.4 is a fixing unit of the frame sections of the device, Fig.5 is a water irrigation system of the device, Fig .6 shows the node connecting the device to the water source, in FIG. 7 shows the folding direction of the device, FIG. 8 shows the device in the folded position.

The device for protecting the fire barrel operator includes the upper 1 and lower 2 sections, interconnected by hinges 3. Sections 1 and 2 in the working position are fixed by a latch 4. In the upper section 1, an opening 5 is made, open on the side, to accommodate a manual fire barrel. The device has supports 6, pivotally attached to the lower section 2.

The frame of each section consists of a front 7 and a rear 8 frames located between each other with a gap. Mesh shielding panels 9 are fixed on the frames 7 and 8 of the frames. A continuous shielding panel 10 is fixed in the lower part of section 2.

To create a water curtain between the mesh shielding panels 9 and the water film on the shielding panels 9 and 10, the device is equipped with a water irrigation system consisting of pipelines 11, nozzles 12, 13 and 14 installed in the space between the frames 7 and 8 of the frame section 1, filter 15 and a rubber sleeve 16 with a tip 17.

The nozzles 12, 13 and 14 are intended for spraying water in the space between the shielding panels 9, are fixed in the central part of the upper 1 section and are interconnected by pipelines 11.

In the upper part of the upper section 1, two oppositely directed nozzles 12 and 13 are installed. The nozzle 12 is directed downward, and the nozzle 13 is directed upwards of the device.

At the bottom of the upper section 1 is installed nozzle 14, which is directed down the device.

The nozzles 12, 13 and 14 are connected by a pipe 11 to the filter 15 for purifying the water supplied to the nozzles 12, 13 and 14 from solid particles that may be present in it.

As a filter 15, a filter of any design can be used, which allows to purify water from solid particles.

On the other hand, a rubber sleeve 16 is attached to the filter 15 with a tip 17, which serves to supply water to the water irrigation system.

The tip 17 is a sleeve 18, the ends of which are equipped with heads 19 and 20 for connection with a fire barrel and a fire hose (not shown). A valve nipple 21 is mounted in the coupling 18.

Inside the clutch 18, a filter screen 22 is installed, which is attached to the clutch 18 with a screw 23.

The latch 4, mounted on section 1, is a bracket 24, which rotates around an axis. A groove 25 is made in the bracket 24. When the latch is rotated, the stop 26 located on the section 2 enters the groove 25 and fastens the sections 1 and 2 together.

The device is equipped with a handle 27, intended for carrying it in the folded position, and fixed in the center of the lower section 2 from the outside. In the upper section 1, a handle 28 is fixed perpendicular to its surface, which, when the sections 1 and 2 are folded, enters the groove 29 made between the solid panels 10 of the lower section 2.

A device for protecting the operator of a fire barrel works as follows.

To install the device in the working position, sections 1 and 2 of the device are deployed, fixed between each other with a latch 4 and mounted on supports 6.

A fire hose (not shown) is connected to the connecting head 19 of the coupling 18, and a manual fire barrel (not shown) is connected to the connecting head 20. The socket of the connecting valve 21 mounted in the housing of the coupling 18 is connected to the rubber sleeve 16.

The screen is carried out when connecting the coupling 18 to the fire barrel and the fire hose. In this case, the water is supplied to the fire barrel and, accordingly, to the coupling 18 when water is supplied under working pressure from the fire water supply system, or by means of a fire truck, or a pumping unit from a fire tank or an open reservoir.

Water through the device’s water irrigation system enters the nozzles 12, 13 and 14 and is sprayed by them in the space between the mesh shielding panels 9, creating a vapor-droplet-air medium in the space between these panels and water films on the panels 9 and 10, which effectively reflect and absorb thermal radiation from the fire, protecting the firefighter from this radiation.

A fire barrel (not shown) is placed in the opening 5 to extinguish a fire. The absence of a side wall restricting the specified opening 5, allows you to quickly enter the fire barrel into the opening and begin to extinguish the fire.

The device is moved to the place of use when folded. When this device is in the folded position, turn the support 6 up. From the side of the protruding handles 27 and 28, a hand is inserted through the handle 28, and, holding the handle 27, raise the device. At the same time, the handle 28 does not allow the device to open and at the same time fixes the device on the hand in an upright position, preventing the device from tipping over and creating convenience when carrying it.

The device, as well as its analogue, has a high degree of attenuation of thermal radiation (not less than 40 times), which allows you to effectively protect the firefighter from thermal radiation in strong fires. In addition, the device, like its analogue, can be virtually unlimited time under the influence of thermal radiation, without losing its heat-shielding properties. Note that in the class of fire fighting equipment, to which the device and its analogue belong, only they have the indicated degree of attenuation of thermal radiation in combination with almost unlimited operating time.

However, unlike its analogue, the device is lightweight (not more than 13 kg) and folding (dimensions in the folded position not more than 760 × 240 × 1100 mm), which allows it to be used in cases where the use of the analogue is due to its weight and bulkiness impossible (for example, in buildings where you want to move the device along flights of stairs, narrow corridors, pass through doorways with it). The small size of the device also removes the problem of its transportation to the place of fire (unlike the analogue, for transportation of which, for example, a trailer to the fire engine on which it is located is required, the transportation device can be placed with the fireman in the cabin of the fire truck). Reducing the weight of the device also leads to an increase in its maneuverability in operation, which makes it possible to more effectively extinguish a fire.

Thus, the present invention provides firefighters with a new highly effective means of protection against thermal radiation during strong fires in buildings and other objects having narrow passages, corridors, flights of stairs, etc.

Claims (12)

1. Device for protecting a firefighter from thermal radiation, comprising a frame with an aperture to enable placement of a fire barrel connected to the fire hose, mesh panels mounted on both sides of the frame with a gap between each other, and a water irrigation system including nozzles, characterized in that that the frame is made of at least two sections pivotally connected to each other and provided with a latch, the nozzles of the water irrigation system located between the panels are fixed to the frame and the pipeline through Keys to the coupling, the ends of which are provided with heads designed for connection to fire and the fire hose barrel. 2. The device according to claim 1, characterized in that a filter mesh is installed in the coupling. 3. The device according to claim 1, characterized in that it further comprises a filter that is mounted in a water irrigation system. 4. The device according to claim 1, characterized in that the nozzles are installed in the center of the upper section. 5. The device according to claim 1, characterized in that in the upper part of the upper section there are two oppositely directed nozzles, one of which is directed upwards and the second downwards of the device. 6. The device according to claim 1, characterized in that in the lower part of the upper section one nozzle is installed, directed downwards of the device. 7. The device according to claim 1, characterized in that the opening for providing the possibility of placing a fire barrel is made at the end of the upper section. 8. The device according to claim 1, characterized in that the lower part of the lower section is solid. 9. The device according to claim 1, characterized in that it is equipped with a support made in the form of legs installed with the possibility of rotation in a horizontal plane. 10. The device according to claim 1, characterized in that it is equipped with a handle fixed in the center of the lower section from the outside. 11. The device according to claim 1, characterized in that it is equipped with an additional handle fixed in the upper section perpendicular to its surface. 12. The device according to claim 1, characterized in that in the lower section there is a groove for accommodating the additional handle.

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