Spraying structure of portable fire extinguisher filled with 2-BTP fire extinguishing agent

A technology of 2-BTP and fire extinguishing agent, which is applied in the field of aviation fire fighting and can solve the problems of inability to achieve fire fighting ability and poor atomization effect.

Inactive Publication Date: 2020-03-24
天津航空机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with Halon 1211, 2-BTP has a higher boiling point, is liquid at room temperature, and has poor atomization effect. The original spray structure cannot achieve the same fire extinguishing ability.

Method used

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  • Spraying structure of portable fire extinguisher filled with 2-BTP fire extinguishing agent
  • Spraying structure of portable fire extinguisher filled with 2-BTP fire extinguishing agent
  • Spraying structure of portable fire extinguisher filled with 2-BTP fire extinguishing agent

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Experimental program
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Embodiment Construction

[0020] The present invention is further described below in conjunction with accompanying drawing:

[0021] Such as figure 1 As shown, a portable fire extinguishing bottle injection structure filled with 2-BTP fire extinguishing agent includes a handle part 1, a valve seat 2, a pressure rod part 3, a siphon tube 4 and a jet nozzle 5; the handle part 1 includes a handle 6 and a pressure handle 7. One end of the valve seat 2 is fixedly connected with the handle 6, the other end is fixedly connected with the pressure handle 7, the jet nozzle 5 is fixedly installed on the valve seat 2, the pressure rod part 3 is installed in the inner cavity of the valve seat 2, and the siphon tube 4 Installed at the bottom of the valve seat 2; such as image 3 As shown, the jet nozzle 5 is a conical nozzle, and its internal structure is composed of two conical sections. The diameter d2 is 4mm ~ 5.5mm, the length is 3mm ~ 6mm; the second conical section is the diffusion section, so that the jet f...

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Abstract

The invention belongs to the technical field of aviation fire prevention and extinguishing, and relates to a spraying structure of a portable fire extinguisher filled with a 2-BTP fire extinguishing agent. The spraying structure comprises a handle part (1), a valve seat (2), a pressing rod part (3), a siphon (4) and a jet flow nozzle (5). By improving jet flow nozzle parameters and optimizing thespraying structure, the requirement on the spraying performance of the portable fire extinguisher can be met; the portable fire extinguisher is used for replacing an onboard halon 1211 portable fire extinguisher; the spraying time of the fire extinguisher filled with 1.6 kg-1.8 kg of 2-BTP fire extinguishing agent and 0.6 MPa-1.2 MPa nitrogen at normal temperature is not shorter than 8s under thespraying structure, and the spraying distance is not shorter than 3m; and the spraying structure can pass UL 5B: C-grade oil pan fire tests and concealed fire tests and seat fire tests specified by the United States Federation Aviation Office (FAA).

Description

technical field [0001] The invention belongs to the technical field of aviation fire prevention and extinguishing, and relates to a spraying structure of a portable fire extinguishing bottle filled with 2-BTP fire extinguishing agent. Background technique [0002] Due to its damage to the ozone layer, halon fire extinguishing agents are gradually eliminated by the market. At present, the aviation field is developing a portable fire extinguisher filled with 2-BTP environmentally friendly fire extinguishing agent. 2-BTP (2-bromo-3,3,3-trifluoropropene, the chemical formula is CF 3 CBr=CH 2 ) has no damage to the ozone layer, does not produce a greenhouse effect, and is environmentally friendly. However, compared with Halon 1211, 2-BTP has a higher boiling point, is liquid at room temperature, and has a poor atomization effect. The original spray structure cannot achieve the same fire extinguishing ability. By improving the jet nozzle, optimizing the spray structure, and fu...

Claims

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Application Information

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IPC IPC(8): A62C31/02A62C13/76
CPCA62C13/76A62C31/02
Inventor 康中英赫世栋崔欣余达恒
Owner 天津航空机电有限公司
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