Extinguisher

FIELD: fire-fighting means.

SUBSTANCE: invention relates to powder fire extinguishers and is designed for fire fighting. Fire extinguisher comprises a cylindrical body with a bottom and a welded lid, on the inner surface of which in a cartridge a neck collar is mounted. The top end of the neck collar is designed as an annular sealing ledge, which after assembly is adjacent to the inner surface of the welded lid. The neck collar is equipped with an internal threaded channel for installation of the start-up device and on the outside with a longitudinal groove, which includes a locking ledge of the cartridge. The neck collar preferably may be made of polymer material by method of casting or compression. The start-up device includes a head with the striker and a spring. At the head the start-up handle is mounted. Between the neck collar and the start-up device the O-ring is mounted.

EFFECT: constructive implementation of the elements of the body lid of a fire extinguisher provides increased reliability of the fire extinguisher and provides ease of manufacture and assembly.

5 cl, 3 dwg

 

The invention relates to fire engineering, namely for the construction of fire extinguishers and can be used in the development and manufacture of powder fire extinguishers and other fire fighting equipment.

Known extinguisher containing cylindrical body with a mouth and a bottom, trigger-locking device with a spray nozzle and siphon tube for feeding powder from the cylindrical body through the trigger-locking device on spray nozzles (A.S. USSR №835451, MKI A62C 13/50, 1981).

This extinguisher trigger-locking device is mounted in the neck connected to the body by welding. Achieving air-tightness of the weld requires the preparation of surfaces for welding, additional quality control of the weld and not achieving the desired reliability due to the appearance of stresses in the weld, due to the thickness of the mating parts.

Known extinguisher containing cylindrical body with a mouth and a bottom, trigger-locking device with a spray nozzle and siphon tube for feeding powder from the cylindrical body through the trigger-locking device in the spray nozzles. This extinguisher cylindrical casing made with Golovino sleeve, which, with its supporting flange secured within the cylindrical is orpus on his neck by means of spot welding and is made with a cylindrical Central pipe, paired with its supporting flange, and a Central pipe is made with an internal thread, whereby the cylindrical body is equipped with trigger-locking device of the extinguisher. Between the latter and the neck body is sandwiched gasket of elastic material, and the bottom is tightly connected to the cylindrical housing by welding (RF patent No. 2311936, IPC A62C 13.00, F17C 1/00, 2007).

However, in such construction of the fire extinguisher connection of the neck of the cylindrical body, and a support flange Golovino sleeve carried on curved surfaces, which is inconvenient in mass production because of the difficulty of ensuring the junction of the mating surfaces. When the change of physico-mechanical properties of the source material varies the amount of permanent deformation moldable billet, which leads to the formation of stresses in the product after Assembly. In this design, the same curved surfaces are sealed shut-starter. Sealing is accomplished by clamping the strip of elastic material and, in case of reduction of the elastic properties of the strip during prolonged storage may result in the loss of tightness of the fire extinguisher, which due to gas leaks, pressure drops in the body, and reduces the efficiency of fire extinguishing is to be placed. Thus, the main drawback of the known device is the lack of reliability in operation, due to the structural characteristics of the product. Another disadvantage is the increased consumption design curved flange of the support Golovino sleeve, the thickness of which is chosen with regard to enforcing the sleeve internal thread for installing trigger-locking device.

These drawbacks are due to the structural features of the known technical solutions.

In terms of total characteristics as the prototype device is selected by the RF patent №2311936.

Technical result provided by the invention is to improve reliability of the device and improving the manufacturability.

This result is achieved by the fact that the fire extinguisher containing cylindrical body with Golovino the bushing and plate, trigger-locking device with a spray nozzle and siphon tube for feeding powder from the cylindrical body through the trigger-locking device on spray nozzles, according to the invention the upper part of the body is in the form of a welded lid, on the inner surface of which the holder is installed gerlovina sleeve internal thread which starter set.

Gerlovina sleeve made of the Jena from a polymeric material and provided with an annular sealing ledge.

On the side surface Golovino sleeve is made a longitudinal groove that interacts with the locking protrusion of the holder.

A locking device installed at the entrance to the spray nozzles.

The starting device is equipped with a threaded socket in which is installed a gas generator.

Between the features and achievable technical result is the following causal link.

Perform upper part of the body in the form of a welded lid, on the inner surface of which the holder is installed gerlovina sleeve ensures manufacturability and Assembly of the body of the extinguisher. In this case, does not require specialized equipment to produce Golovino sleeve. When you build the fire extinguisher to seal the sealing surfaces you can use the standard sealing elements such as o-rings, collars, flat gaskets, etc. in which tightness is achieved through self-packing under pressure environment inside the apparatus. The use of standard sealing elements distinguishes the design from the prototype, in which the seal is only through the use of the elastic properties of the sealing strip, as the elastic properties may deteriorate during long-term storage of heat is uchitelya. Loss of elastic properties can cause depressurization of the fire extinguisher in its application. Thus, the proposed solution not only provides improved reliability of the device, but is more efficient as it does not require specialized equipment to produce Golovanova pipe

Installing the internal thread Golovino sleeve starter provides the ability to use powder extinguisher different types of generating gas devices. This improves the reliability of the fire extinguisher, as in the case of the fire extinguisher operating pressure (1.5 MPa) is created only at the time of application. It also provides increased reliability of the device.

Manufacturer Golovino sleeve of polymer material provides a dramatic cost reduction in the manufacture Golovino sleeve when the mass or serial production. Supply Golovino sleeve annular sealing ledge provides a tight seal to the housing cover, which increases the tightness of the fire extinguisher, thereby increasing the reliability of his work.

Execution on a side surface Golovino sleeve longitudinal groove that interacts with the locking protrusion of the clip prevents turning of the sleeve during Assembly of the fire extinguisher. This Gar is ntinued the orientation of the lever trigger relative to the siphon tube and pipe with nozzle.

Install a shut-off device at the inlet to the spray nozzles to more effectively carry out the fire. If necessary, short-term cessation of fire extinguishing powder shut-off device can rummage through his submission and resume feeding after pointing the spray nozzle on the site of the fire. This improves the efficiency of fire.

Supply starter threaded socket in which is installed a gas generator, enables the use of different types of gas generators while maintaining the other elements of the starter. This provides an expansion of the range of finished products. In addition, this design also increases the reliability of the fire extinguisher, as in the case of the fire extinguisher operating pressure (1.5 MPa) is created only at the time of application.

The set of essential features that characterize the invention, can be reused in the production of various modifications powder fire extinguishers with technical result consists in increasing the reliability and improving the manufacturability of a design, which consists in simplifying the design and reducing the weight, which allows to make a conclusion on compliance of the proposed facility to the criterion "industrial applicability".

The essential is to be claimed invention is illustrated in the drawings, where presented:

figure 1 shows a General view of the fire extinguisher;

figure 2 - view of the housing cover on the side;

figure 3 - same as figure 2, top view.

The list of positions in these drawings

1 - Body;

2 - Bottom;

3 - Cover welded;

4 - Clip;

5 - Bush gerlovina;

6 - Ring sealing ledge;

7 is a Threaded channel;

8 - Device launcher;

9 is a longitudinal Groove;

10 - Lug retainer;

11 - Head;

12 - Head;

13 - Spring;

14 - Arm launch;

15 - Ring sealing;

16 - Socket screw;

17 - gas Source;

18 - Hole;

19 - Tube siphon;

20 - the flexible Sleeve;

21 - spray Nozzles;

22 - Handle;

23 - divider;

24 - Nozzle;

25 - extinguishing Powder;

26 - the Jack under the pin.

The fire extinguisher comprises a cylindrical housing 1 with a bottom 2 and a welded cover 3, on the inner surface of which the holder 4 is installed gerlovina sleeve 5. The top end Golovino sleeve 5 is made in the form of an annular sealing lip 6, which after Assembly is adjacent to the inner surface of the mounting cover 3. Gerlovina sleeve 5 has an internal threaded channel 7 for installation of the starter 8 and on the outer side of the longitudinal groove 9, which includes the locking protrusion 10 of the casing 4. Gerlovina sleeve 5 site which preferably may be made of a polymeric material by casting or pressing. Starting device 8 includes a cylinder 11 with the striker 12 and the spring 13. On the head 11 mounted arm run 14. Between Golovino sleeve 5 and the ignition device 8 is installed, the sealing ring 15. In the threaded socket 16 of the head 11 has a gas source 17. As the gas source 17 can be used in the gas generator GSU on THE 4854-014-27526919-96 or the gas generator GG. On the head 11 mounted arm run 14. On the head 11 mounted arm run 14 on THE 4854-001-44270574-2000. In welding the cover 3 is made a hole 18, which is installed by welding siphon tube 19 connected by a flexible sleeve 20 with the spray nozzle 21 in the form of spray guns that contains the handle 22 with a movable spring-loaded fitting (stop valve), the divider 23 and nozzle 24. The inner cavity of the fire extinguisher is filled with powder extinguishing 25, for example, Vixon-ABS on THE 2149-028-10968286-97. Mounted on the head arm 11 run 14 is fixed sealed W / cotter pin (not shown)installed in the socket 26.

The fire extinguisher works as follows.

The principle of operation of the fire extinguisher is based on the use of the energy of compressed gas for aeration and release of fire extinguishing powder.

To bring a fire extinguisher in the action pulled out the sealed cheque from the slot 26. Handle run 14 plays up, this fight is 12 under the action of the spring 13 actuates a gas source 17, causing the working gas AERONET powder fire extinguishing 25 and creates inside the housing 1 fire extinguisher is required overpressure.

When pressed by hand on the handle 22 of the fire extinguishing powder through the siphon tube 19 inserted in the hole 18, through a flexible hose 20 and spray gun with a spray nozzle 21, the divider 23 and nozzle 24 is fed to the fire. It provides high efficiency of fire fighting and high reliability of the fire extinguisher at the expense of high integrity, due to the design of the upper part of the body is in the form of a welded cover 3, on the inner surface of which the holder 4 is installed gerlovina sleeve 5, the internal thread which starter set. The tightness of the fire extinguisher is achieved by the presence of the annular sealing lip 6, which after Assembly is adjacent to the inner surface of the mounting cover 3, which helps to ensure the integrity of the fire extinguisher. Installing internal threaded channel 7 Golovino sleeve 5 with the sealing ring 15 launching device 8 provides a standard working conditions seals, excluding failures. The presence on the outer side of the longitudinal groove 9, which includes the locking protrusion 10 of the casing 4, excludes cranking Golovino sleeve 5 when the SRB is Kyo.

Quenching is necessary to make the windward side from a distance of not less than 3-4 meters. After quenching is necessary to press the handle 22 and discard the rest of the powder.

The use of the invention "fire extinguisher" allows to increase the reliability of powder fire extinguisher, to improve manufacturability and reduce the weight.

1. A fire extinguisher containing a cylindrical housing with Golovino the bushing and plate, trigger-locking device with a spray nozzle and siphon tube for feeding powder from the cylindrical body through the trigger-locking device on spray nozzles, characterized in that the upper part of the body is in the form of a welded lid, on the inner surface of which the holder is installed gerlovina sleeve internal thread which starter set.

2. The fire extinguisher according to claim 1, characterized in that gerlovina sleeve is made of a polymeric material and provided with an annular hermeticum ledge.

3. The fire extinguisher according to claim 1, characterized in that on the side surface Golovino sleeve is made a longitudinal groove that interacts with the locking protrusion of the holder.

4. The fire extinguisher according to claim 1, characterized in that the locking device is installed at the entrance to the spray nozzles.

5. The fire extinguisher according to claim 1, characterized in that the triggering of the mouth of austo provided with a threaded socket, which features a gas generator.



 

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2 cl, 2 dwg

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