Water-cooled spray gun for blowing high-temperature oxidizing gas and method for blowing oxidizing gas

A high-temperature oxidation, water-cooled technology, applied in the field of water-cooled spray gun and oxidizing gas injection

Active Publication Date: 2021-04-27
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the existing spray guns, the present invention proposes a water-cooled spray gun for blowing high-temperature oxidizing gas, which makes full use of the law of internal energy-kinetic energy conversion of the gas in the nozzle nozzle of the gun, and reasonably sets the protective coating and vacuum barrier. The heat layer can not only effectively block the heat exchange between cooling water and high-temperature oxidizing gas, but also inhibit the oxidative erosion of the pipeline by high-temperature oxidizing gas, and can also strengthen the cooling of the end of the spray gun

Method used

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  • Water-cooled spray gun for blowing high-temperature oxidizing gas and method for blowing oxidizing gas
  • Water-cooled spray gun for blowing high-temperature oxidizing gas and method for blowing oxidizing gas
  • Water-cooled spray gun for blowing high-temperature oxidizing gas and method for blowing oxidizing gas

Examples

Experimental program
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Effect test

Embodiment 1

[0036] See attached Figure 1-4 :

[0037]A water-cooled spray gun for blowing high-temperature oxidizing gas, including a gun core 1 and a water jacket 2; the gun core is inserted into the water jacket; the gun core includes a gun body 1-4 and a gun head 1-5; the gun head is from top to bottom Including rounded table-shaped pipe 1-6, straight pipe 1-7, round table-shaped pipe 1-8; water jacket includes sleeve body 2-1 and sleeve head 2-2; sleeve body includes inner wall 2-7, water baffle 2-5 , outer wall 2-3; one end of the sheath is connected to the inner wall, and the other end is connected to the outer wall; the inner wall of the gun core is provided with a protective coating, and the gun core is inserted into the water jacket to form a spray gun. After the combination, the lower end of the gun core and the water jacket are flush , the gun core can be pulled out from the water jacket, and the gun core can be replaced;

[0038] The gun core is hollow as the high-temperatu...

Embodiment 2

[0046] On the basis of Example 1, the hollow layer on the inner wall of the jacket is evacuated, and the width of the vacuum structure is 3mm, which further reduces the thermal conductivity and enhances the heat insulation effect; the rest remain unchanged.

Embodiment 3

[0048] On the basis of Example 1, the lower end of the baffle is a vertical structure (see Figure 5 ); the rest remain unchanged.

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Abstract

The invention discloses a water-cooled spray gun for blowing high-temperature oxidizing gas and a method for blowing the oxidizing gas. The spray gun comprises a gun core and a water jacket. The gun core is inserted into the water jacket. The gun core comprises a gun body and a gun head, the water jacket comprises a jacket body and a jacket head, and the gun head of the gun core and the jacket head of the water jacket are made of metal materials with high heat conductivity coefficients. The gun body of the water-cooled spray gun for blowing the high-temperature oxidizing gas communicates with a pipeline for conveying the high-temperature oxidizing gas, and the gun head communicates with a metallurgical furnace, so that blowing of the oxidizing gas is completed. According to the water-cooled spray gun for blowing the high-temperature oxidizing gas and the method for blowing the oxidizing gas, the internal energy-kinetic energy conversion rule of gas in a gun head spray pipe is fully utilized, a protective coating and a vacuum heat insulation layer are ingeniously arranged, heat exchange between cooling water and the high-temperature oxidizing gas can be effectively blocked, oxidation corrosion of the high-temperature oxidizing gas to the pipeline can also be restrained, and cooling of the end of the spray gun can also be enhanced.

Description

technical field [0001] The invention relates to the field of metallurgical blowing technology, in particular to a water-cooled spray gun for blowing high-temperature oxidizing gas and a method for blowing oxidizing gas. Background technique [0002] Injecting oxidizing gas into the molten pool is a commonly used process in the metallurgical process. The physical and chemical interaction between the oxidizing gas and the molten pool is used to realize a series of functions such as stirring, heating, and removing impurities in the molten pool. The more typical Examples include the oxygen supply operation of the converter or electric arc furnace steelmaking process, where the supersonic oxygen jet penetrates the furnace gas and slag and then contacts with molten steel and undergoes a chemical reaction. [0003] The injection of oxidizing gas during the metallurgical process, on the one hand, provides the oxygen required for the reaction of the molten pool, and on the other hand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/46C21C5/52
CPCC21C5/4606C21C5/52C21C2005/4626Y02P10/20
Inventor 胡绍岩朱杰周长吏王德永屈天鹏于京豪刘旭冉赵陆千龙罗鸿彬
Owner SUZHOU UNIV
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