Device for ensuring non-flameout of ignition burner of blast furnace gas heating furnace

Abstract

The utility model relates to the technical field of metallurgical heating furnace ignition equipment, and particularly discloses a device for ensuring that an ignition burner of a blast furnace gas heating furnace does not flame out, which comprises an electronic ignition mechanism and a heating furnace, the electronic ignition mechanism is arranged at the burner of the heating furnace, and the electronic ignition mechanism is provided with an air through pipe and an electronic igniter. The electronic igniter is installed at the head of the combustible gas source pipe, a fire keeping structure is installed in the air through pipe and comprises a fire keeping cavity, a fire striking head and two pore plates, the fire keeping cavity is formed between the two pore plates, and the fire striking head is connected to the outer sides of the pore plates; when the ignition burner is used for baking and heating, the efficiency of personnel is improved, the labor intensity is reduced, and the safety in the coal gas using process is improved; when the blast furnace gas is normally combusted, fire is kept through the fire keeping structure, energy consumption is reduced, quick response is achieved when the blast furnace gas needs to be ignited, ignition efficiency is improved, and the normal combustion temperature of the heating furnace is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of ignition equipment for metallurgical heating furnaces, in particular to a device for ensuring that an ignition burner of a blast furnace gas heating furnace does not go out. Background Art

[0002] The heating furnace is the main equipment for heating raw materials. The raw materials used include blast furnace gas, mixed gas, tar and other gases. In the heating furnace using blast furnace gas, due to the calorific value of blast furnace gas, when the heating furnace starts to ignite, there will be a situation of flameout and explosion due to low temperature or extinguishment of the ignition source. Therefore, under normal circumstances, when the blast furnace gas burner is ignited and the furnace is heated up, there will be a special person to fill the burner with firewood to prevent the fire source from being extinguished.

[0003] There are the following problems when using blast furnace gas as a combustion raw material for heating furnaces:

[0004] 1. When the blast furnace gas heating furnace is ignited and the burner is heated, there will be a special person to add firewood, which is prone to gas poisoning.

[0005] 2. If the ignition burner of the blast furnace gas heating furnace is not filled with firewood in time, it will go out, causing gas to spread.

[0006] 3. If the ignition burner of the blast furnace gas heating furnace is extinguished and the gas diffusion is not handled in time, it will cause a major accident of gas explosion if it is ignited rashly.

[0007] Therefore, there is an urgent need to design a device to ensure that the ignition burner of the blast furnace gas heating furnace does not go out, so as to solve the problem that when the existing blast furnace gas is used as fuel, the calorific value of the blast furnace gas is low and the risk of flameout and explosion will occur at low temperatures. Utility Model Content

[0008] In view of the problems existing in the prior art, the purpose of the utility model is to provide a device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out.

[0009] The technical solution adopted by the utility model to solve its technical problems is: a device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out, comprising an electronic ignition mechanism and a heating furnace, wherein the electronic ignition mechanism is installed at the burner nozzle of the heating furnace, the electronic ignition mechanism is provided with an air passage and an electronic igniter, the electronic igniter is installed at the head of the flammable gas source pipe, a fire protection structure is installed in the air passage, the fire protection structure comprises a fire protection cavity, an ignition head and two orifice plates, the fire protection cavity is arranged between the two orifice plates, and the ignition head is connected to the outer side of the orifice plate.

[0010] Specifically, the air passage is obliquely mounted on the outer sealing plate of the burner nozzle, and the air passage extends into the burner nozzle.

[0011] Specifically, a flammable gas source connector is installed on the outside of the air duct, the flammable gas source connector is connected to the external flammable gas source pipeline, the flammable gas source connector is connected to the flammable gas source pipe, the flammable gas source pipe is arranged inside the air duct, and the length of the flammable gas source pipe is shorter than the length of the air duct.

[0012] Specifically, the flammable gas source in the flammable gas source pipe is natural gas or hydrogen.

[0013] Specifically, an air connector is provided on the upper side of the exterior of the air passage, and the air connector is connected to an external air duct.

[0014] Specifically, the orifice plate is provided with a plurality of through holes, the diameter of the ignition head is smaller than the diameter of the orifice plate, and a frustum-shaped buffer cavity is formed between the ignition head and the orifice plate.

[0015] Specifically, a three-way joint is connected to the outer sealing plate of the burner nozzle, the upper part of the three-way joint is connected to the air pipeline, and the outer side of the three-way joint is connected to the blast furnace gas pipeline.

[0016] The utility model has the following beneficial effects:

[0017] The utility model is designed to ensure that the ignition burner of the blast furnace gas heating furnace does not go out. The device adopts remote-operated ignition, which can avoid physical injuries caused by dangerous gases. The electronic ignition mechanism is interlocked with the gas quick-cut valve. When the electronic ignition device goes out due to human error, in order to prevent the gas from spreading, the gas quick-cut valve directly cuts off the gas, which improves the efficiency of personnel when the ignition burner is heating up the furnace, reduces labor intensity, and improves safety during gas use.

[0018] The utility model is designed to ensure that the ignition burner of the blast furnace gas heating furnace does not go out. The device is equipped with a fire protection structure in the air passage. When the blast furnace gas is burning normally, the fire protection structure is used to protect the fire, thereby reducing energy consumption. When the blast furnace gas needs to be ignited, the blast furnace gas responds quickly, the ignition efficiency is improved, and the normal combustion temperature of the heating furnace is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation structure of a device that ensures that the ignition burner of a blast furnace gas heating furnace does not go out.

[0020] Figure 2 It is a structural diagram of the fire protection structure.

[0021] Figure 3 It is a structural diagram of the orifice plate.

[0022] In the figure: 1 - electronic ignition mechanism, 1.1 - flammable gas power supply connector, 1.2 - air connector, 1.3 - flammable gas power supply pipe, 1.4 - air pipe, 1.5 - electronic igniter, 1.6 - orifice plate, 1.7 - fire chamber, 1.8 - ignition head;

[0023] 2-burner nozzle; 3-heating furnace; 4-blast furnace gas pipeline; 5-air pipeline; 6-tee joint. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely further describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] like Figure 1-Figure 3 As shown, a device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out includes an electronic ignition mechanism 1 and a heating furnace 3. The electronic ignition mechanism 1 is installed at the burner 2 of the heating furnace 3. A tee joint 6 is connected to the external sealing plate of the burner 3. The upper part of the tee joint 6 is connected to the air duct 5, and the outer side of the tee joint 6 is connected to the blast furnace gas pipeline 4.

[0026] The electronic ignition mechanism 1 is provided with a flammable gas power supply connector 1.1, an air connector 1.2, a flammable gas power supply pipe 1.3, an air passage 1.4, an electronic igniter 1.5, an orifice plate 1.6, a fire protection chamber 1.7 and an ignition head 1.8. The electronic igniter 1.5 is installed at the head of the flammable gas power supply pipe 1.3, and a fire protection structure is installed in the air passage 1.4. The fire protection structure includes a fire protection chamber 1.7, an ignition head 1.8 and two orifice plates 1.6. The fire protection chamber 1.7 is arranged between the two orifice plates 1.6, and the ignition head 1.8 is connected to the outside of the orifice plate 1.6.

[0027] The air passage 1.4 is obliquely mounted on the outer sealing plate of the burner 2 and extends into the burner 2.

[0028] A flammable gas source connector 1.1 is installed outside the air duct 1.4, which is connected to an external flammable gas source pipeline. The flammable gas source connector 1.1 is connected to a flammable gas source pipe 1.3, which is arranged inside the air duct 1.4. The length of the flammable gas source pipe 1.3 is shorter than that of the air duct 1.4.

[0029] The flammable gas source in the flammable gas source pipe 1.3 is natural gas or hydrogen.

[0030] An air connector 1.2 is provided on the outer upper side of the air passage 1.4, and the air connector 1.2 is connected to an external air pipeline.

[0031] The orifice plate 1.6 is provided with a plurality of through holes. The diameter of the ignition head 1.8 is smaller than that of the orifice plate 1.6. A frustum-shaped buffer cavity is formed between the ignition head 1.8 and the orifice plate 1.6 on the side away from the flammable gas source connection. The frustum-shaped buffer cavity increases the flame pressure at the ignition head and sprays the flame farther.

[0032] The working principle of this utility model:

[0033] A fire protection structure is installed in the air passage. When the blast furnace gas is burning normally, the fire protection structure is used to protect the fire, stop the air from entering the air joint, reduce the amount of flammable gas entering to the minimum, reduce energy consumption, and respond quickly when the blast furnace gas needs to be ignited, improve ignition efficiency, and ensure the normal combustion temperature of the heating furnace. An electronic ignition and fire protection device is installed at the wood filling position of the ignition burner 2. The electronic igniter 1.5 of the electronic ignition mechanism 1 adopts the electronic electrode ignition principle. The flammable gas source can be natural gas or hydrogen. After the gas source is ignited by the electronic igniter 1.5 and stable combustion is achieved, the blast furnace gas and air are turned on and adjusted to the combustion ratio. At this time, the blast furnace gas can continue to burn stably when encountering a fire source, and will not go out due to the lack of a fire source or low temperature.

[0034] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention.

[0035] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out, characterized in that: It includes an electronic ignition mechanism and a heating furnace. The electronic ignition mechanism is installed at the burner nozzle of the heating furnace. The electronic ignition mechanism is provided with an air passage and an electronic igniter. The electronic igniter is installed at the head of the flammable gas source pipe. A fire protection structure is installed in the air passage. The fire protection structure includes a fire protection cavity, an ignition head and two orifice plates. The fire protection cavity is set between the two orifice plates, and the ignition head is connected to the outside of the orifice plate.

2. The device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out according to claim 1 is characterized in that: The air passage is obliquely mounted on the outer sealing plate of the burner nozzle and extends into the burner nozzle.

3. The device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out according to claim 2 is characterized in that: A flammable gas source connector is installed on the outside of the air duct, which is connected to an external flammable gas source pipeline. The flammable gas source connector is connected to the flammable gas source pipe. The flammable gas source pipe is arranged inside the air duct, and the length of the flammable gas source pipe is shorter than that of the air duct.

4. The device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out according to claim 3 is characterized in that: The flammable gas source in the flammable gas source pipe is natural gas or hydrogen.

5. The device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out according to claim 1 is characterized in that: An air joint is provided on the upper side of the exterior of the air passage, and the air joint is connected to an external air duct.

6. The device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out according to claim 1 is characterized in that: The orifice plate is provided with a plurality of through holes. The diameter of the ignition head is smaller than the diameter of the orifice plate. A frustum-shaped buffer cavity is formed between the ignition head and the orifice plate.

7. The device for ensuring that the ignition burner of a blast furnace gas heating furnace does not go out according to claim 1 is characterized in that: The outer sealing plate of the burner nozzle is connected to a three-way joint, the upper part of the three-way joint is connected to an air pipeline, and the outer side of the three-way joint is connected to a blast furnace gas pipeline.

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