SU638340A1

SU638340A1 - Fire-extinguishing device

Info

Publication number: SU638340A1
Application number: SU772509926A
Authority: SU
Inventors: Валентин Николаевич Понимасов; Владимир Иванович Мухин
Original assignee: Ponimasov Valentin N; Mukhin Vladimir
Priority date: 1977-07-18
Filing date: 1977-07-18
Publication date: 1978-12-25

Description

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Изобретение относитс к противопожарной технике, а именно к устройствам дл тушени пожаров порошковыми огнегас щими веществами.The invention relates to fire fighting equipment, in particular, to fire extinguishing devices with fire extinguishing powder.

Известно устройство дл тушени пожаров , содержащее баллон с огнегас шим порошковым веществом, эжектор и баллон дл сжатого воздуха 1|.A fire extinguishing device is known, which contains a cylinder with fire extinguished powder, an ejector and a cylinder for compressed air 1 |.

При истечении струи огнегас щего вещества она имеет пульсирующий характер, что снижает эффективность тушени пожаров .When a jet of fire-extinguishing substance expires, it has a pulsating character, which reduces the effectiveness of extinguishing fires.

Известно также устройство дл тушени пожаров, содержащее бункер дл огнегас щего вещества, эжектор с камерой смешени , подключенный к нему смесепровод со стволом и съемным насадком, и линии подачи сжатого газа в бункер и к эжектору 2.It is also known a fire extinguishing device comprising a hopper for an extinguishing agent, an ejector with a mixing chamber, a blended conductor with a barrel and a removable nozzle connected thereto, and a compressed gas supply line to the hopper and to the ejector 2.

Использование этой установки ограниче-. но определенным диапазоном давлени сжатого газа - 1-2 ати. Отклонение от этого давлени приводит к пульсации струи, что снижает эффективность тушени пожаров.The use of this installation is limited. but a certain pressure range of compressed gas is 1-2 at. Deviation from this pressure causes the jet to pulsate, which reduces the effectiveness of extinguishing fires.

Целью изобретени вл етс повышение эффективности тушени пожаров путем снижени пульсации истекающей струи огнегас щего вещества.The aim of the invention is to increase the efficiency of extinguishing fires by reducing the pulsation of the outgoing jet of extinguishing agent.

Это достигаетс тем, что устройство имеет регулируемый дроссельный элемент и дополнительную камеру смешени , выполненную в виде двух конусообразных элементов, соединенных между собой по большему основанию и размещенную на выходе из эжектора , при этом регулируемый дроссельный элемент установлен в линии подачи сжатого газа к эжектору.This is achieved by the fact that the device has an adjustable throttle element and an additional mixing chamber made in the form of two cone-shaped elements interconnected along a larger base and placed at the outlet of the ejector, while the adjustable throttle element is installed in the compressed gas supply line to the ejector.

На чертеже изображена схема устройства дл тушени пожаров.The drawing shows a diagram of a fire extinguishing device.

Claims

The device has a bunker 1, into which fire extinguishing powder is poured to a certain level through the hatch 2. The bunker is provided with a damper 3 for controlling the supply of powder to the ejection device 4. Compressed gas flows through the supply unit 5, the line b and the valve 7 to the bunker I above the level of the powder. Through the supply unit 5 and the adjustable throttle element 8, the compressed gas is pestled to the ejecting device 4. At the output of the ejecting device;) additional chamber 9 of gas and powder mixing is calculated, calculated by ff. to create conditions for fluidization of the powder in the stream. The chamber 9 is made in the form of two cone-shaped elements 10 connected along a larger base. Chamber 9 is adjoined by a mix-seal P., ending at the end with barrel 2 with a removable nozzle to create different streams of powder (from compact to sprayed), depending on the need. In the event of a fire, a supply of compressed gas is turned on (the source in the drawing is shown as a pipeline), which through the supply unit 5, line 6 and valve 7 is fed into the hopper 1. fill it up to the design pressure. The compressed gas flows through the adjustable throttle element 8 to the ejecting device 4, the powder is jetted and then goes to the mixing chamber 9, where fluidization of the powder occurs in the stream. Due to this, the fluidity of the powder is increased several times, which ensures the output through, blending through the mixing pipe And and the barrel 12 in the form of strings without pulsation at significant pressures and the optimum concentration ratio of the mixture in the powder stream. This determines the high fire-extinguishing efficiency of the jet. Claims An fire extinguishing device comprising a hopper for an extinguishing agent, an ejector with a mixing chamber, a blended conductor with a barrel and a removable nozzle connected to it, and a compressed gas supply line to the hopper and to the ejector; characterized in that, in order to increase the efficiency of extinguishing fires by reducing the pulsation of the outgoing jet of fire-extinguishing substance, it has an adjustable choke element and an additional mixing chamber made in the form of two conical elements interconnected along a large base and placed at the exit of the ejek. torus, with an adjustable throttle element installed in the supply line of compressed gas to the ejector. Sources of information taken into account in the examination :. 1. USSR Author's Certificate No. 206316, cl. A 62 C 35/00, 1966.

2. USSR author's certificate number 299090, cl. A 62 C 35/50, 1969.

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