CN2165489Y

CN2165489Y - Automatic alarm fire-extinguisher

Info

Publication number: CN2165489Y
Application number: CN 92237065
Authority: CN
Inventors: 金永柏; 金伟; 李永森
Original assignee: Institute of Metal Research of CAS
Current assignee: Institute of Metal Research of CAS
Priority date: 1992-11-17
Filing date: 1992-11-17
Publication date: 1994-05-18
Anticipated expiration: 2002-11-17

Abstract

The utility model relates to an automatic alarm fire extinguisher, which is composed of container warning circuit and a valve. The utility model is characterized in that the valve comprises four components such as a valve body, a press cover, a drive rod, and a memory spring, wherein, the memory spring is sheathed on the drive rod, the temperature sensing, alarm, and the driving and extinguishing functions can be completed according to the temperature memory characteristic of the memory spring. When the utility model is cooled, the memory spring can automatically shrink, and can be reused. The utility model has the advantages of simple and compact structure and wide application.

Description

Automatic alarm fire-extinguisher

The utility model relates to flame snuffer, the flame snuffer of particularly reporting to the police automatically.

The flame snuffer that uses in the fire-fighting at present has various ways, and common has manually and automatic two big classes.For realizing two functions of reporting to the police automatically and put out a fire, Automatic Fire Extinguisher often adopts the structure of warning system and fire extinguishing system discrete, seals nozzle with low-melting alloy, and when metal molten, fire extinguishing agent sprays automatically, realizes fire extinguishing; An additional in addition cover contains the warning circuit of thermal sensing element, realizes reporting to the police automatically, and structure is very not compact.

The purpose of this utility model is to provide a kind of and collects automatic warning and self-extinguishing is flame snuffer simple in structure all over the body.

The flame snuffer that the utility model provides is made up of container 8 warning circuits and valve, and the lower port of valve connects mutually with the container spout, it is characterized in that valve has valve body 3, gland 1, driving stem 6,4 four parts of memory spring; Valve body has the tubular construction of bayonet socket in being; Gland 1 is positioned at the upper port of valve body 3; Driving stem 6 is in the valve body 3, and an end and sealing gasket 7 under the bayonet socket join, and sealing gasket 7 is sealed bayonet socket by container 8 internal pressures, and there is a nut 5 at the middle part of bar, and a limit spring 9 is set between nut 5 and the bayonet socket; Memory spring 4 usefulness Ti-Ni alloys are made, and are enclosed within on the driving stem, and an end is fixed on the nut, and the other end is that free end is as moving contact.

The utility model is the two-way memory effect that adopts memory spring, and the warning fire-extinguishing function concurrently is rolled into one, and realizes temperature-sensitive one warning, the function of driving one fire extinguishing.When temperature was higher than warning temperature (as 45 ℃), the memory spring displacement was little, and moving contact is contacted with stationary contact, started warning circuit.If in time do not take measures, temperature will continue to raise, memory spring continues elongation, when temperature reaches certain setting value (as 65 ℃), the displacement of spring is very big, and its restoring force is enough to overcome the pressure in the container, and driving stem backs down O-ring seal at once, fire extinguishing agent sprays automatically by the pressure in the container, realizes fire extinguishing.Treat that temperature reduces to room temperature, memory spring shrinks again voluntarily, need not anyly handle, and spring is reusable, and its life-span can reach thousands of times.In addition, consider and to make different modes the requirement of warning system and the different Automatic Fire Extinguishers of application scenario.Describe the utility model below in conjunction with accompanying drawing in detail by embodiment.

Fig. 1 is the axial cut-open view of contact-type Automatic Fire Extinguisher;

Fig. 2 is the axial cut-open view of non-contact type Automatic Fire Extinguisher.

Embodiment 1

The Automatic Fire Extinguisher of contact-type as shown in Figure 1, just often memory spring 4 has a free end, it is enclosed within on the driving stem 6, with gland 1 spacing of 2～4mm is arranged approximately, memory spring 4 itself also is a moving contact except that as temperature-sensitive-actuator.Driving stem 6 one ends are free end, give spacingly with spring 9, and the other end is laid an O-ring seal 7, seal by the pressure in the container 8.Valve body 3 is made by conductive material, and an end and container 8 are connected as a single entity, and the other end links to each other with gland 1.Gland 1 is made up of two parts, and the peripheral edge portion that links to each other with valve body 3 is an insulating material, and middle stationary contact 2 parts are conductive material.During work, form power circuit by valve body 4 common springs 9, driving stem 6, memory spring 4 and stationary contact 1 and warning circuit.Often open the contact at ordinary times, in case environment temperature rises to setting value (45 ℃), little displacement takes place in memory spring 4, the normally opened contact closure, the warning system circuit communicates, realize reporting to the police, temperature continues to raise, and memory spring 4 will continue elongation, memory spring 4 is under the constraint of gland, to driving stem 6 reinforcings, when temperature reached setting value (65 ℃), the driving force of memory spring 4 was enough to overcome the pressure in the container 8, driving stem 6 is moved inward, back down O-ring seal 7, fire extinguishing agent sprays automatically by container 8 internal pressures, realizes self-extinguishing.

Embodiment 2

The Automatic Fire Extinguisher of non-contact type is characterized in that the stationary contact 2 at gland 1 middle part is the trigger end of relay as shown in Figure 2.

The utility model makes warning and fire-extinguishing function concurrently roll into one owing to use memory spring as the temperature-sensitive driving element, thereby simple and compact for structure.

Claims

1, a kind of automatic warning flame snuffer is made up of container warning circuit and valve, and the valve lower port connects mutually with the container spout, it is characterized in that valve has valve body, gland, driving stem, four parts of memory spring:

A, valve body have the tubular construction of bayonet socket in being;

B, gland are positioned at the upper port of valve body;

C, driving stem are arranged in valve body, and a termination has sealing gasket to block bayonet socket, and the middle part of bar is with nut, are provided with limit spring between nut and the valve body bayonet socket;

D, memory spring are enclosed within on the driving stem, and an end is fixed on the nut, and the other end is a free end.

2, by the described warning flame snuffer of claim 1, it is characterized in that:

A, valve body are made by conductive material;

B, gland are made by two kinds of materials, marginal portion insulating material, stationary contact position, middle part conductive material;

C, memory spring free end are 2～4mm apart from the distance of stationary contact.

3,, it is characterized in that described gland middle part stationary contact is the trigger end of relay by the described automatic warning flame snuffer of claim 1.

4,, it is characterized in that described memory spring makes with Ti-Ni alloy by claim 1,2,3 described warning flame snuffers.