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High pressure rapid cutting tip nozzle

A rapid cutting, torch nozzle technology, applied in the direction of injection devices, welding equipment, liquid injection devices, etc., can solve problems such as backfire or backfire

Inactive Publication Date: 2004-01-14
日本斯彭株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in a gas cutting device, since the temperature of the gas flame formed by the combustion of the mixed gas is higher than 3000°C and the gas flame sprays very quickly, if the gas flow is blocked due to factors such as cutting slag during the gas cutting process, the The gas flame will ignite in the torch nozzle and nozzle, causing flashback or flashback problems

Method used

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Embodiment Construction

[0021] Embodiments of the present invention will be described below with reference to the drawings.

[0022] Figure 1 to Figure 3 A first embodiment of the present invention is shown. The base of the torch nozzle body 1 ( figure 1 The upper part) has a conical surface 1a communicating with a blowing pipe (not shown) for supplying oxygen and fuel gas, the base forming a pipe. Recesses 1b, 1c, and 1d for respectively receiving oxygen, gas, and oxygen supplied from the blowing pipe are formed on the tapered surface 1a, and flow passages 1e leading to the inside of the torch nozzle are formed from the recesses 1b. . In addition, a plurality of flow passages 1f and 1g extending to the front end of the torch nozzle 1 are concentrically formed from the recesses 1c and 1d.

[0023] In the nozzle body 1 a sleeve 2 is inserted from the base and fixed with a nut 3 . A flow passage 2a for supplying gas cutting oxygen is formed at the center of the sleeve 2 so as to be coaxial with t...

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Abstract

The present invention relates to a high pressure, rapid cutting tip nozzle which provides a cutting oxygen jet hole 2b in the front end surface, and provides concentrically from the inside, with this cutting oxygen jet hole 2b as the center, a first oxygen jet hole group 7a, a first fuel gas jet hole group 8c, a second fuel gas jet hole group 8a, and an oxygen jet opening 9a, and wherein steel is cut by the high pressure gas flow jetting from the cutting oxygen jet hole 2b, and in particular is characterized in the front end of flow paths 9b and 9c, which branch from the flow path 9 leading to the oxygen jet opening 9a, opening on the side surface of flow paths 8 and 8b, which lead to the first and second fuel gas jet hole group 8c and 8a, at a point within 10 mm from said front end surface. According to the present invention, gas cutting of steel can be carried out with high efficiency and safely.

Description

technical field [0001] The invention relates to a high-pressure fast-cutting welding torch nozzle used for gas-cutting a thick steel plate in a continuous casting slab gas-cutting device. The present invention is proposed on the basis of Japanese Patent Application No. Hei 9-361519, and the technical content in Japanese Patent Application No. Hei 9-361519 is referred to in the application of the present invention. Background technique [0002] The present inventor proposed a high-pressure rapid cutting welding torch nozzle (hereinafter simply referred to as "welding torch nozzle") in Japanese Utility Model No. Hei 5-39293. A first group of oxygen nozzles, a first group of gas nozzles, a second group of gas nozzles and a second group of oxygen nozzles or an oxygen nozzle are arranged around the gas cutting oxygen nozzles located in the central part of the torch nozzle, In order to form several concentric circles centered on the gas-cutting oxygen nozzle. In addition, in ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K7/10F23D14/52F23D14/54
CPCF23D14/54B05B7/00B23K7/00
Inventor 潮田文之辅吉野民弥
Owner 日本斯彭株式会社