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A gas cutting nozzle with catalytic combustion

A catalytic combustion and cutting nozzle technology, applied in the direction of burner, combustion method, combustion type, etc., can solve the problems of long preheating time, affecting cutting speed and cutting quality, and low flame temperature, so as to improve gas properties and improve cutting Efficiency and quality, effect of increasing flame temperature and flame propagation rate

Inactive Publication Date: 2016-04-13
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: propane and natural gas gradually replace acetylene as cutting gas, but the flame temperature of cutting gas such as propane and natural gas is not high, and the preheating time is long, which affects the cutting speed and cutting quality

Method used

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  • A gas cutting nozzle with catalytic combustion
  • A gas cutting nozzle with catalytic combustion
  • A gas cutting nozzle with catalytic combustion

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specific Embodiment approach

[0014] like figure 1 , figure 2 , image 3 , Figure 4 As shown, the cutting nozzle of the present invention includes three parts, the cutting nozzle core, the cutting nozzle fairing and the catalyst bed. The cutting nozzle core is composed of a head and a body, and generally they are fixed by connecting threads. The head of the cutting nozzle core is provided with a cutting oxygen inlet hole through the body, a circle of preheating oxygen inlet hole and a circle of gas inlet hole. The preheated oxygen and gas inlet ports in the head mix at the beginning of the mixing air port below it. The body of the cutting nozzle core is provided with a groove for installing the catalyst bed. The depth of the groove is 1 to 4 mm and the length is 10 to 30 mm. The number of distribution channels is 10 to 20, and the gas is ejected from the distribution channels.

[0015] The cutting nozzle fairing is sleeved on the cutting nozzle core body, and forms an air injection channel with the...

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Abstract

The invention relates to a fuel gas cutting torch with catalytic combustion. The fuel gas cutting torch comprises a cutting torch core (1), a catalyst bed layer (9) and a cutting torch fairing (11); the cutting torch core is divided into a head part (3) with a step and a body part (7), the head part is provided with a circle of preheating oxygen inlet holes, a fuel gas inlet hole (5) and a cutting oxygen inlet hole (2) penetrating through the body, the body part is provided with a groove (8), and the catalyst bed layer is fixed between the groove and the cutting torch fairing. Mixed gas of oxygen and fuel gas passes through the catalyst bed layer from a mixed gas hole (6) and is sprayed out from a split groove (10). According to the fuel gas cutting torch, as the catalyst bed layer is installed, mixed gas flow flows through the catalyst bed layer and is catalyzed through catalysts, so that performance of the mixed gas flow is improved, temperature of combustion flame is increased, cutting preheating time is shortened, and the usage amount of the fuel gas is reduced.

Description

technical field [0001] The invention relates to a flame cutting nozzle and belongs to the technical field of cutting. Background technique [0002] The processing method of flame cutting is widely used in many industrial enterprises such as steel mills and shipyards, and the selection of cutting gas has a decisive impact on the width of the cutting seam and the quality of the section. Acetylene has been widely used as cutting gas due to its high calorific value and high flame temperature. However, the production of acetylene consumes a lot of electric energy and other industrial raw materials, and at the same time pollutes the environment and is relatively expensive. It is gradually replaced by other fossil fuels. replaced. Now many enterprises choose to use propane, natural gas, hydrogen, liquefied petroleum gas, etc. as cutting gas, which can reduce production costs and protect the environment, but there are also problems such as large cutting slit width and poor cutting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/54F23D14/42
Inventor 林其钊胡超
Owner UNIV OF SCI & TECH OF CHINA
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