CN2110139U

CN2110139U - Three-gas flame heating apparatus spray nozzle

Info

Publication number: CN2110139U
Application number: CN 91225316
Authority: CN
Inventors: 杜庚年; 陈小平
Original assignee: SHIJIAZHUANG WELDING AND CUTTING TORCH FACTORY
Current assignee: SHIJIAZHUANG WELDING AND CUTTING TORCH FACTORY
Priority date: 1991-09-17
Filing date: 1991-09-17
Publication date: 1992-07-15

Abstract

The utility model relates to a flame heater nozzle for heating parts, or glass and quartz products by using combustible gas flame. The combustible gas is thoroughly burnt, the high-temperature zone of the flame can be conveniently controlled, and the problem of easy burning loss of the existing nozzle is solved. The utility model is characterized in that three layers of oxygen are added on the basis of the original structure, the middle layer is the combustible gas or the mixing gas, and the inner layer and the outer layer are the oxygen. The thermal efficiency is raised, and the high-temperature zone of the flame can be regulated. The flame heater nozzle is suitable for enlarging the size of the processed part, and the burning loss of the nozzle can be prevented. The utility model is suitable for heating metal parts, and processing glass and quartz products.

Description

Three-gas flame heating apparatus spray nozzle

The utility model relates to the fired heater nozzle that utilizes imflammable gas flame heat part or glassware, quartz ware.This nozzle is made up of imflammable gas jet pipe and combustion-supporting gas jet pipe.

Existing gas flame heater nozzle is inside and outside two-layer gas, interior pipe inspection combustion-supporting gas, and outer tube combustible gas injected or mist, it is little to adjustable range between the flame high-temperature region, and gas fuel burning not exclusively causes waste.And the flame high-temperature region is near from nozzle, is easy to roasting heat and scaling loss nozzle.

For overcoming the above-mentioned shortcoming of prior art, the purpose of this utility model provides a kind of improved fired heater nozzle, and making it can increase adjustable range according to concrete instructions for use between the flame high-temperature region, improves the thermal efficiency, prevents the nozzle scaling loss.

Task of the present utility model can realize by following structure: its characteristics of heater nozzle are to be made up of core pipe, middle sleeve and outer tube, it between core pipe and the middle sleeve gaseous mixture that lumen feeds imflammable gas or imflammable gas and combustion-supporting property gas, is that exocoel communicates with the core tube cavity is porose at outer tube with cavity between the middle sleeve, feeds combustion-supporting property gas.

Accompanying drawing is a fired heater nozzle arrangements schematic diagram.

Below in conjunction with accompanying drawing the utility model embodiment is described in further detail: the outside of core pipe (1) is set with middle sleeve (2), cavity in forming between middle sleeve (2) and the core pipe (1), and its end connects for the sealing wood property.Be set with outer tube (3) in middle sleeve (2) outside, between middle sleeve (2) and outer tube (3), form outer chamber, its end connects with core pipe (1) or middle sleeve (2) sealing, and core pipe (1) bore and middle sleeve (2) communicate with outer chamber porose (4) between the outer tube (3).By connector (5,6) each other part is coupled together.The tail pipe (7) of core pipe (1) tail end connects combustion-supporting property gas such as oxygen.Feed imflammable gas such as hydrogen, acetylene gas, natural gas, coal gas etc. by tail pipe (8) in the middle cavity between core pipe (1) and middle sleeve (2), or the gaseous mixture of flammable and combustion-supporting gas.Middle cavity between core pipe (1) and middle sleeve (2) sprays imflammable gas or gaseous mixture like this.Outer chamber between core pipe (1) and outer field middle sleeve (2) and outer tube (3) can spray combustion-supporting oxygen simultaneously.Form three layers of gas.In use can only feed imflammable gas in the middle level.If the feeding gaseous mixture promptly is to utilize the existing distributing valve that cuts tool, open the gaseous mixture valve, utilize and penetrate the suction principle, make imflammable gas and oxygen carry out mixing the first time.Nozzle ejection again with inboard core pipe and the outer oxygen mixed combustion mutually of ejection simultaneously, can make combustible gas obtain sufficient oxygen, prevent the combustible gas loss, make it abundant burning.Regulate the pressure size of combustible gas and combustion-supporting oxygen, make two boundary layers of two kinds of gases obtain different velocity gradients, can obtain different laminar flow layers and the disorderly layer that fills, thereby can obtain the thermal-flame that the different impulse force of width differs in size, can adjust different preheat flames and neutral flame.Can satisfy making, the processing of part heating, glassware processing, quartz ware such as instrument, light fixture, the different needs of repairing.

Compared with the prior art the utility model has the following advantages:

1, because imflammable gas has internal layer, outer oxygen combustion-supporting, thereby sufficient combustion, the thermal efficiency improves 0.5 to 2 times;

2, the flame high-temperature region can be regulated, and is fit to the different needs of processing, and can process diameter is the goods of 0.5 to 25 millimeter quartz ampoule;

3, flame high-temperature region to nozzle distance extends, and can reach 20 to 30 centimetres.Impurity is to the pollution of processing parts in the time of can preventing the scaling loss nozzle and reduce jet combustion.

The accuracy of manufacture guarantees that easily flame is difficult for tempering simultaneously, and noise is little, and is safe and reliable.

Claims

1, a kind of fired heater nozzle, form by core pipe and sleeve pipe, it is characterized in that: by core pipe (1) middle sleeve (2), and outer tube (3) is formed, middle cavity between core pipe (1) and the middle sleeve (2) feeds the gaseous mixture of imflammable gas or imflammable gas and combustion-supporting gas, communicate with core pipe (1) inner chamber porose (4) with outer chamber between the middle sleeve (2) at outer tube (3), feed combustion-supporting property gas.