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Fire protection heptafluoropropane steel cylinder and manufacturing method thereof

A heptafluoropropane and fire-fighting technology, which is applied to container filling methods, container discharge methods, pressure vessels, etc., can solve problems such as incomplete penetration, air holes, and uneven gaps, and achieve good welding quality, simplified process, and simple structure Effect

Inactive Publication Date: 2014-11-19
汪佳泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to ensure the roundness of the backing plate ring in this process, so the gap between the backing plate ring and the barrel body is generally not uniform, resulting in welding defects such as slag inclusion, incomplete penetration, and pores after welding.

Method used

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  • Fire protection heptafluoropropane steel cylinder and manufacturing method thereof
  • Fire protection heptafluoropropane steel cylinder and manufacturing method thereof
  • Fire protection heptafluoropropane steel cylinder and manufacturing method thereof

Examples

Experimental program
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Embodiment Construction

[0021] Such as figure 1 Shown, be the structural appearance schematic diagram of heptafluoropropane steel cylinder, among the figure I is the joint of the upper head 4 of steel cylinder and barrel body 3. Such as figure 2 It is a schematic diagram of the internal structure of the connection point I between the upper head 4 and the barrel body 3 with the original process backing plate ring 7, the upper head 4 and the barrel body 3 at a V of 60° Groove pairs are welded. Such as image 3 Shown is the schematic diagram of the internal structure of I in the embodiment, after the upper head 4 is improved to shrink, the structure of the connection between the upper head 4 and the cylinder body 3, from image 3 It can be seen that the upper head 4 has a necking, and the upper head 4 is welded together after the necking and the cylinder body 3 cooperate.

[0022] The manufacturing process of embodiment is:

[0023] a. Processing cylinder body 3: the cylinder body is rounded, weld...

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Abstract

The invention relates to a fire protection heptafluoropropane steel cylinder and a manufacturing method thereof and aims at providing a fire protection heptafluoropropane steel cylinder which is free of process pad ring and simple in machining process and a manufacturing method of the fire protection heptafluoropropane steel cylinder; no clearance is reserved between a cylinder body and sealing heads after the steel cylinder body is paired with the sealing heads, so that the roundness of the cylinder body can be guaranteed, the quality of the machining process can be improved, and the welding defect can be eliminated. According to the technical scheme, the fire protection heptafluoropropane steel cylinder comprises an upper sealing head, a lower sealing head, the cylinder body, a base, a valve seat and a lifting lug; the fire protection heptafluoropropane steel cylinder is characterized in that necking structures are designed on the upper sealing head and the lower sealing head.

Description

technical field [0001] The invention relates to the field of fire-fighting products, in particular to a heptafluoropropane steel cylinder for fire-fighting and a manufacturing method thereof. Background technique [0002] Heptafluoropropane gas fire extinguishing agent welded steel cylinders for fire fighting are pressure vessels, which require moderate wall thickness, reliable welding, and safe handling and storage. The butt welds of the existing heptafluoropropane cylinder body and the upper and lower heads are V-shaped welds with backing plates. The process backing plate ring is spot welded at both ends of the inner ring of the cylinder body; the upper and lower heads are pressed and trimmed; then the upper and lower heads are assembled with the cylinder body with a process backing plate ring and then welded. It is difficult to ensure the roundness of the backing plate ring in this process, so the gap between the backing plate ring and the cylinder body after the process...

Claims

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Application Information

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IPC IPC(8): F17C1/00F17C13/06
Inventor 汪佳泉
Owner 汪佳泉
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