CN2340457Y

CN2340457Y - Automatic extinguisher with Laval back-fire relief board

Info

Publication number: CN2340457Y
Application number: CN 98217248
Authority: CN
Inventors: 刘仁发
Original assignee: CHONGZHENG QILONG EXTINGUISHING EQUIPMENT Co Ltd JIANGXI PROV
Current assignee: CHONGZHENG QILONG EXTINGUISHING EQUIPMENT Co Ltd JIANGXI PROV
Priority date: 1998-07-24
Filing date: 1998-07-24
Publication date: 1999-09-29
Anticipated expiration: 2008-07-24

Abstract

The utility model relates to an automatic extinguisher with a Laval back-fire relief board, which comprises a smoke sensitive sensor, a temperature sensitive sensor, a starter, a reaction chamber shell body, a powder column, a small powder pack, an electric squib, an outer shell of an extinguisher, etc. The utility model is characterized in that the nozzle position of the Laval back-fire relief board is evenly distributed with more than two rows spraying throats, wherein both ends of the spraying throats are provided with small holes with different tapers and the middle is provided with a cylindrical section. The utility model can effectively reduce the temperature of aerosol smog so that the powder column of the reaction chamber normal burns. The utility model has the advantages of less residue, simple structure and low cost, and can be placed in all directions; compared with the old steel ball back-fire relief device, the extinguishing efficiency of the utility model increases by 30-50%.

Description

The Laval back-fire relief board automatic fire extinguisher

The utility model belongs to a kind of extinguishing device, relates in particular to the Laval back-fire relief board automatic fire extinguisher.

In existing technology, we recognize that the spout in the old-fashioned automatic fire extinguisher adopts steel ball structure mostly, during the steel ball back-fire relief, steel ball surface can be stained with a large amount of aerosols, fire-fighting efficiency is low, complex structure, and placement that can not full mode, can only place by horizontal level, bring very big inconvenience for various structural shape extinguishing devices.

Main purpose of the present utility model designs a kind of placement simple in structure, any, the Laval back-fire relief board automatic fire extinguisher that fire-fighting efficiency is high.

This practical technical scheme is to realize like this, it comprises cigarette propagated sensation sensor, warm propagated sensation sensor, starter, reative cell housing, powder column, little cartridge bag, electric detonator, extinguishing device shell, it is characterized in that: Laval back-fire relief board spout place is evenly distributed with the aperture that the above two ends of two rows have different taperings, left end tapering α is at 90 °-120 °, right-hand member tapering β is at 15 °-35 °, and the centre is the spray larynx of cylindrical section.

The utility model has following advantage compared to existing technology:

1, the aperture of the different taperings in Laval back-fire relief board spout two ends can make reative cell powder column normal combustion, lacks to produce or do not produce residue.

2, stop outside the thermal-flame that reative cell produces when powder column burns and spray, reduce the temperature of colloidal sol smog effectively.

3, adopt the loss of Laval back-fire relief board spout aerosol few, therefore improved fire-fighting efficiency, improve 30-50% than old-fashioned steel ball back-fire relief extinguishing device.

4, adopt the Laval back-fire relief board spout structure simple, it is convenient to place, and cost is low.

Description of drawings:

Fig. 1 is the utility model operation principle schematic diagram;

Fig. 2 is the utility model reaction chamber structure schematic diagram;

Fig. 3 is that the A of the utility model Laval back-fire relief board nozzle holes is to schematic diagram;

Fig. 4 is the utility model Laval back-fire relief board spout two ends tapering I enlarged diagrams.

Below in conjunction with accompanying drawing the utility model is further specified:

Fig. 1 is a utility model groundwork schematic diagram, when big fire occurring, cigarette propagated sensation sensor (7) and warm propagated sensation sensor (8) with sensitivity to signal pass to starter (9) rapidly, at this moment, starter then sends sound, the light alarm, and by lead output starting current, the electric detonator (5) that will be contained in the reative cell housing (2) is ignited, following little cartridge bag (4) ignites, powder column (3) is lighted, and the powder column of lighting produces a large amount of aerosol cloud, spout (1) effect through Laval back-fire relief board, to be blocked in the reative cell housing (2) along with the thermal-flame that powder column (3) light generation, aerosol cloud then sprays from Laval back-fire relief board spout (1) aperture, enters the netted spout ejection of left end of extinguishing device shell (6), the aerosol cloud of ejection enters the scene of a fire, realizes fire extinguishing.

Fig. 2 is reative cell housing (2), these parts are hearts of extinguishing device, its housing is a steelwork, its inner chamber is mainly used to install fire extinguishing powder column (3), little cartridge bag (4), electric detonator (5) and passage etc., constitute a special fire-retarding device, flame, Mars, the residue of reaction all can be hindered in reative cell, only allow aerosol from reative cell, to spray, enter flue.

Fig. 3, Fig. 4 are Laval back-fire relief board spout (1) A to, I zoomed-in view, and Laval back-fire relief board spout (1) is a steel stamping part, is loaded on reative cell housing (2) flue outlet place, and it is shaped as the shutter shape structure.Have the aperture of the different conical surfaces to view, evenly distributed on this fire-proof plate as can be seen two rows above two ends of A, wherein the I enlarged drawing has been represented the shape of one of them aperture, the left end in hole is that tapering α is 90 ° of-120 ° of scope values, the centre in hole is the spray larynx of cylindrical section, its value is according to explosive payload, factors such as combustion speed determine that the right-hand member in hole is that tapering β is 15 ° of-35 ° of scope values.

Claims

1, a kind of Laval back-fire relief board automatic fire extinguisher, it comprises cigarette propagated sensation sensor (7), warm propagated sensation sensor (8), starter (9), reative cell housing (2), powder column (3), little cartridge bag (4), electric detonator (5), extinguishing device shell (6), it is characterized in that: Laval back-fire relief board spout (1) is located to be evenly distributed with the aperture that the above two ends of two rows have different taperings, and the centre is the spray larynx of cylindrical section.

2, Lavalle according to claim 1 eliminator plate extinguishing device, it is characterized in that: Laval back-fire relief board spout (1) two ends tapering value is: left end tapering α at 90 degree to 120 degree, right-hand member tapering β at 15 degree to 35 degree.