CN221513369U - A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery - Google Patents

Abstract

The utility model discloses a pressure relief nozzle assembly of a fire extinguishing device with a nozzle and a groove on the periphery, comprising a front cover arranged on the top of a cylinder body, a nozzle opening arranged on the surface of the front cover, a pressure relief diaphragm arranged on the lower side of the front cover, a nozzle opening corresponding to the nozzle opening arranged on the periphery of the pressure relief diaphragm, and a groove corresponding to the nozzle opening arranged on the periphery surface of the pressure relief diaphragm or the outer edge of the nozzle. When the pressure inside the cylinder body increases abnormally, the utility model can cause the position where the groove is located to tear, thereby generating a pressure relief channel, timely performing pressure relief, preventing the risk of explosion, and ensuring the safety of the fire extinguishing device.

Description

A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery

Technical Field

The utility model relates to the technical field of fire fighting, in particular to a pressure relief nozzle assembly of a fire extinguishing device with nozzles and grooves arranged on the periphery.

Background Art

Aerosol fire extinguishing devices have been widely used for their advantages such as small size, pressure-free storage, no need for laying pipes and maintenance, high fire extinguishing efficiency, non-toxicity, safety and reliability, and environmental protection. However, since the gas production speed of the fire extinguishing agent is faster than that of traditional fire extinguishing devices, the fire extinguishing device often explodes when it is started. Since the explosion will instantly produce a large amount of high-pressure and high-temperature gas, it will generate huge pressure in a very short time, exceeding the pressure limit of the fire extinguishing device itself, causing the fire extinguishing device itself to explode, seriously endangering the safety of personnel and equipment in the protected area;

At present, the commonly used pressure relief structure of aerosol fire extinguishing devices mainly realizes the pressure relief function by setting a pressure relief diaphragm matched with the front cover. For example, 202320500662X-an aerosol fire extinguishing device with a pressure relief structure, when the pressure is relieved, the pressure at the pressure relief port increases sharply, and the pressure on the pressure relief diaphragm is sufficient to destroy the pressure relief diaphragm, so that the pressure relief port is exposed and the pressure relief process is carried out in time; however, in actual use, the pressure relief diaphragm is often not easy to be destroyed, resulting in pressure relief failure, thereby causing safety hazards such as excessive pressure and causing explosion.

Utility Model Content

The utility model aims to overcome the above-mentioned shortcomings and provide a fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery to solve the problems raised in the background technology.

In order to solve the above technical problems, the utility model adopts the following technical solutions: a fire extinguishing device pressure relief nozzle assembly with a nozzle and a groove on the periphery, comprising a front cover arranged on the top of a cylinder body, a nozzle opening arranged on the surface of the front cover, a pressure relief diaphragm arranged on the lower side of the front cover, a nozzle opening corresponding to the nozzle opening arranged on the periphery of the pressure relief diaphragm, and a groove corresponding to the nozzle opening arranged on the outer surface of the pressure relief diaphragm or the outer edge of the nozzle.

Preferably, the depth of the grooves formed on the surface of the pressure relief diaphragm does not exceed the thickness of the pressure relief diaphragm.

Preferably, the pressure relief diaphragm has a thickness of 0.5 mm and a groove depth of 0.15 mm.

Preferably, the groove is a triangular groove structure that is wide at the top and narrow at the bottom.

Preferably, the surface of the pressure relief diaphragm is provided with a plurality of groups of grooves and a plurality of nozzles, and the grooves and nozzles are distributed in a ring array with the center of the pressure relief diaphragm.

Preferably, the spray holes include peripheral spray holes corresponding to the grooves and the nozzles in the peripheral area, and the number of the peripheral spray holes is multiple and they are distributed in a circular array at the center of the front cover.

Preferably, the diameter of the peripheral spray hole is larger than the maximum size of the groove.

Preferably, the upper outer edge of the front cover cooperates with a retaining ring spun on the top of the cylinder, and the lower side of the pressure relief diaphragm cooperates with a sealing ring arranged on the inner wall of the cylinder.

Preferably, the sealing ring is arranged on the upper side of the fixing ring, and the edge of the fixing ring is fixedly connected to the groove of the inner wall of the cylinder.

Beneficial effects of the utility model:

The utility model can cause the position where the groove is located to tear when the internal pressure of the cylinder body increases abnormally, thereby generating a pressure relief channel, timely relieving the pressure, preventing the risk of explosion, and ensuring the safety of the fire extinguishing device.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a fire extinguishing device with nozzles and grooves provided on the periphery;

FIG2 is an enlarged structural diagram of the area where the pressure relief spray hole assembly in FIG1 is located;

FIG3 is a schematic diagram of the top view of the front cover in FIG2 ;

FIG4 is a schematic diagram of a top view of a structure in which grooves are provided on the outer surface of a pressure relief diaphragm;

FIG5 is a schematic diagram of a structure in which a nozzle is provided at the outer edge of the nozzle of a pressure relief diaphragm;

FIG. 6 is a schematic diagram of the cross-sectional structure of the region where the grooves are located in the pressure relief diaphragm.

DETAILED DESCRIPTION

The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 4, a pressure relief nozzle assembly of a fire extinguishing device with a nozzle and a groove on the periphery includes a front cover 2 arranged at the top of a cylinder 1, a nozzle 3 is arranged on the surface of the front cover 2, a pressure relief diaphragm 4 is arranged on the lower side of the front cover 2, a nozzle 7 corresponding to the nozzle 3 is arranged on the periphery of the pressure relief diaphragm 4, and a groove 6 corresponding to the nozzle 3 is arranged on the outer surface of the pressure relief diaphragm 4 or the outer edge of the nozzle 7 (corresponding to the structures shown in Figures 4 and 5, respectively). In the normal fire extinguishing process, the fire extinguishing material is sprayed out from the nozzle 7 and the nozzle 3. When the internal pressure of the cylinder 1 increases abnormally, the position of the groove 6 is torn under the action of pressure, thereby generating a pressure relief channel, and timely pressure relief is performed to prevent the risk of explosion.

Preferably, the depth of the groove 6 formed on the surface of the pressure relief diaphragm 4 does not exceed the thickness of the pressure relief diaphragm 4. This can ensure the integrity of the bursting diaphragm 4 during normal spraying and guide the bursting diaphragm 4 to tear along the groove 6 during rupture.

Preferably, the pressure relief diaphragm 4 has a thickness of 0.5 mm, and the depth of the groove 6 is 0.15 mm.

Preferably, the groove 6 is a triangular groove structure that is wide at the top and narrow at the bottom. This triangular groove structure facilitates the pressure relief diaphragm 4 to be torn apart along the groove 6 from the inside to the outside.

Preferably, the surface of the pressure relief diaphragm 4 is provided with multiple groups of grooves 6 and multiple nozzles 7, and the grooves 6 and nozzles 7 are distributed in a ring array around the center of the pressure relief diaphragm. After the multiple groups of grooves 6 and multiple nozzles 7 are provided, the fire extinguishing material can be sprayed more evenly and the diffusion area can be larger.

Preferably, the spray hole 3 includes peripheral spray holes 3.1 corresponding to the peripheral area grooves 6 and the nozzles 7. The number of the peripheral spray holes 3.1 is multiple and they are distributed in a circular array at the center of the front cover 2. This circular array makes the range of the fire extinguishing agent spraying more uniform.

Preferably, the diameter of the peripheral spray hole 3.1 is larger than the maximum size of the groove 6. This ensures that during the pressure relief process, the peripheral spray hole 3.1 will not affect the groove 6 from tearing from the inside to the outside.

Preferably, the upper outer edge of the front cover 2 cooperates with the retaining ring 1.1 spun on the top of the cylinder 1, and the lower side of the pressure relief diaphragm 4 cooperates with the sealing ring 1.2 provided on the inner wall of the cylinder 1. In the actual installation process, at the very beginning, the cylinder 1 is cylindrical, and then the fire extinguishing agent column, coolant, sealing ring, pressure relief diaphragm and front cover are placed inside the cylinder 1 in sequence, and then the retaining ring 1.1 is spun on the top of the cylinder 1 through the spinning process, so that the above components can be buckled inside the cylinder 1 to complete the entire installation process; the sealing ring 1.2 can ensure the sealing inside the cylinder 1, and prevent moisture in the external air from entering therein and causing the fire extinguishing agent column to absorb moisture.

Preferably, the sealing ring 1.2 is arranged on the upper side of the fixing ring 1.3, and the edge of the fixing ring 1.3 is fixedly connected to the groove of the inner wall of the cylinder 1. The fixing ring 1.3 can support the sealing ring 1.2 to prevent it from detaching during the spinning installation process.

The working principle of this embodiment is as follows:

When a fire occurs outside, the starting component of the fire extinguishing device ignites the fire extinguishing agent column, produces fire extinguishing material inside the cylinder 1, and then sprays it out from the nozzle 7 and the nozzle hole 3 to carry out the fire extinguishing process: when the fire extinguishing agent column burns abnormally and deflagration occurs, the pressure inside the cylinder 1 will increase abnormally and suddenly. Under the action of pressure, the position where the groove 6 is located will be torn, thereby producing a pressure relief channel, and timely pressure relief is carried out to prevent the risk of explosion.

The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims (9)

1. A pressure relief nozzle assembly of a fire extinguishing device with a nozzle and a groove formed on the periphery, comprising a front cover (2) arranged on the top of a cylinder (1), a nozzle hole (3) formed on the surface of the front cover (2), and a pressure relief diaphragm (4) formed on the lower side of the front cover (2), characterized in that a nozzle (7) corresponding to the nozzle hole (3) is formed on the periphery of the pressure relief diaphragm (4), and a groove (6) corresponding to the nozzle hole (3) is formed on the outer surface of the pressure relief diaphragm (4) or the outer edge of the nozzle (7). 2. A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery according to claim 1, characterized in that the depth of the grooves (6) provided on the surface of the pressure relief diaphragm (4) does not exceed the thickness of the pressure relief diaphragm (4). 3. A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery according to claim 2, characterized in that the pressure relief diaphragm (4) has a thickness of 0.5 mm and the groove (6) has a depth of 0.15 mm. 4. A fire extinguishing device pressure relief nozzle assembly with a nozzle and a groove on the periphery according to claim 2, characterized in that: the groove (6) is a triangular groove structure that is wide at the top and narrow at the bottom. 5. A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery according to claim 1, characterized in that: the surface of the pressure relief diaphragm (4) is provided with a plurality of groups of grooves (6) and a plurality of nozzles (7), and the grooves (6) and nozzles (7) are distributed in a ring array with the center of the pressure relief diaphragm. 6. A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery according to claim 5, characterized in that: the nozzle hole (3) includes peripheral nozzle holes (3.1) corresponding to the grooves (6) and nozzles (7) in the peripheral area, and the number of the peripheral nozzle holes (3.1) is multiple and distributed in a ring array around the center of the front cover (2). 7. A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery according to claim 6, characterized in that the aperture of the peripheral nozzle hole (3.1) is larger than the maximum size of the groove (6). 8. A fire extinguishing device pressure relief nozzle assembly with a nozzle and grooves on the periphery according to claim 1, characterized in that: the upper outer edge of the front cover (2) cooperates with the retaining ring (1.1) spun on the top of the cylinder (1), and the lower side of the pressure relief diaphragm (4) cooperates with the sealing ring (1.2) provided on the inner wall of the cylinder (1). 9. A fire extinguishing device pressure relief nozzle assembly with nozzles and grooves on the periphery according to claim 8, characterized in that: the sealing ring (1.2) is arranged on the upper side of the fixing ring (1.3), and the edge of the fixing ring (1.3) is fixedly connected to the groove on the inner wall of the cylinder (1).