Long-neck gas fuel spray nozzle capable of being adjusted in multiple angles

A gas fuel, multi-angle technology, applied in combustion chambers, combustion methods, combustion equipment and other directions, can solve the problems of accidents, gaseous fuel systems prone to explosion, total time increase, etc., to achieve simple connection, reduce the incidence of gas leakage failures , the effect of convenient assembly

Inactive Publication Date: 2016-02-03
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the reduction of the time for the formation of pre-combustion mixture, the total time of continuous combustion is increased. Therefore, the combustion efficiency is also high, but there are also disadvantages: the gaseous fuel system is prone to explosion, causing accidents

Method used

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  • Long-neck gas fuel spray nozzle capable of being adjusted in multiple angles
  • Long-neck gas fuel spray nozzle capable of being adjusted in multiple angles

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with embodiment.

[0015] according to Figure 1 ~ Figure 2 As shown, a multi-angle adjustable long-necked gas fuel nozzle includes a metal hose 1, one end of the metal hose 1 is fixed to the pipe joint 2, and the other end is fixed to the gas nozzle 3; the metal hose 1 includes a bellows 4 , The bellows 4 is covered with a layer of metal mesh 5, the metal hose 1 can work under a certain pressure and temperature range, can be bent at any angle, and has a small thermal expansion.

[0016] The metal hose 1 is inserted into the gas nozzle 3 and welded to prevent the gas leakage failure of the fuel system in the flow channel.

[0017] The wall thickness of the bellows 4 is 0.3-0.5mm, and the material is 1Cr18Ni9Ti.

[0018] The metal mesh surface 5 is composed of wire weaving, and the material is 1Cr18Ni9Ti. The metal mesh surface 5 is fixedly connected with the end of the bellows 4 to control ...

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Abstract

The invention discloses a long-neck gas fuel spray nozzle capable of being adjusted in multiple angles. The long-neck gas fuel spray nozzle comprises a metal hose, wherein a pipe connector is fixedly connected to one end of the metal hose, and a fuel gas spray nozzle body is fixedly connected with the other end of the metal hose. The metal hose comprises a corrugated pipe which is wrapped by a layer of metal mesh surface. The metal hose is inserted into the fuel gas spray nozzle body and is connected with the fuel gas spray nozzle body in a welded manner. The wall thickness of the corrugated pipe ranges from 0.3 mm to 0.5 mm. The metal mesh face is formed by weaving metal wires, and materials are 1Cr18Ni9Ti. The metal mesh face and the end of the corrugated pipe are fixedly connected. By means of the design that the metal hose is directly welded to the spray nozzle body, assembling of pipe connectors in a gas turbine is reduced; by means of the flexible connection manner, the displacement, generated in the working process of the gas turbine, of a combustion chamber casing part and an outer duct casing part and thermal deformation of a pipeline are automatically adjusted, and the phenomenon that due to rigid connection, assembling stress is generated due to manufacturing deviation, and cracking accidents are caused due to vibration can be avoided; and the spray nozzle body and a fuel gas branch pipe can be conveniently connected, the structure is compact, and the integral design requirement of the gas turbine is met.

Description

Technical field: [0001] The invention relates to the technical field of gas turbine equipment, in particular to a multi-angle adjustable long-necked gas fuel nozzle. Background technique: [0002] The fuel used in gas-fired units is usually gas. Gas fuel has the characteristics of relatively low ignition temperature and fast flame propagation speed. Once leaked, it is easy to burn the components of the unit or even cause the unit to explode. Therefore, the sealing design of the gas system of the gas turbine is particularly important. In the past, the nozzle of the gas engine was connected to the air supply system through a rigid pipe, so there was a possibility of fuel leakage in the connection between the nozzle and the rigid pipe, and between the rigid pipe and the air supply system. The tolerances of the gas system are likely to cause difficulties in assembly, the assembly stress of the components, and the relative displacement between the parts due to the thermal deform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28
Inventor 蓝天霞周建平胡家农吕晶陈阳
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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