High speed premixing ignition gun

Abstract

The utility model relates to ignition device technical field, and specifically is a kind of high-speed premixing ignition gun suitable for the scene needing efficient, stable ignition. Including ignition gun pipe joint, center gas gun, premixing sleeve pipe, gas interface and combustion-supporting air interface. Compared with prior art, the utility model has the beneficial effects that: by optimizing the premixing mode of fuel and combustion-supporting agent and ignition structure, the ignition efficiency, stability and safety are improved;It is suitable for various industrial combustion equipment, and the application range is wide;Adopt the cyclone disc of new structure, when combustion-supporting air passes through the slot of cyclone disc, it can rotate clockwise, enhance mixed gas turbulence, by improving the mixing degree of combustion-supporting air and gas, the flame stability is improved;Support frame can keep the rigidity of ignition electrode, effectively prevent ignition electrode and center gas gun from small gap at far away from support, strictly control insulation gap, ensure stable combustion.

Description

Technical Field

[0001] This utility model relates to the field of ignition device technology, specifically a high-speed premixed ignition gun suitable for scenarios requiring efficient and stable ignition. Background Technology

[0002] In existing ignition technologies, traditional ignition guns mostly use a method where fuel and oxidizer (such as air or oxygen) come into direct contact before ignition. This method suffers from problems such as uneven mixing of fuel and oxidizer, and untimely mixing, resulting in slow ignition response and low efficiency. To address these shortcomings, there is an urgent need to develop an ignition gun that can premix fuel and oxidizer while improving ignition response speed and safety to adapt to various industrial combustion equipment. Utility Model Content

[0003] The purpose of this invention is to provide a novel high-speed premixed ignition gun to solve the aforementioned problems. By optimizing the mixing efficiency of fuel and oxidizer, enhancing flame stability, and improving ignition reliability and safety, it achieves highly efficient ignition.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution: a high-speed premixed ignition gun, comprising an ignition gun tube connector, a central gas gun, a premixed sleeve, a gas interface, and a combustion air interface; the ignition gun tube connector is connected to the premixed sleeve, the central gas gun is placed inside the premixed sleeve, and a power connector is located at one end of the ignition gun tube connector and connected to its internal electrode head; the gas interface and the combustion air interface are located on the ignition gun tube connector, and the gas interface extending into the ignition gun tube connector communicates with the central gas gun; multiple support frames are uniformly fitted along the axial direction of the central gas gun; an ignition electrode penetrating the premixed sleeve is installed on the support frame; a grounding electrode matching the ignition electrode is also provided on the support frame at the front end of the central gas gun; a gas nozzle is installed at the front end of the central gas gun, and a swirl plate is fitted outside the gas nozzle; the free ends of the ignition electrode and the grounding electrode are both placed inside the swirl plate.

[0005] As a preferred technical solution, the gas nozzle is threadedly connected to the central gas gun, and the gas nozzle is provided with 7 nozzle holes, including 1 nozzle hole in the axial direction and 6 nozzle holes in the radial direction.

[0006] As a preferred technical solution, the central gas gun and the premixed sleeve are arranged concentrically; the distance between the outlet end face of the central gas gun nozzle and the outlet end face of the premixed sleeve is 2-2.5 times the inner diameter of the premixed sleeve.

[0007] As a preferred technical solution, the support frame includes a ceramic tube and a support plate; two parallel support plates are connected by a connector; each support plate has a through hole at one of its four corners, and a support assembly is provided between the two support plates; the support assembly includes a ceramic tube, a support column, and a support nut; a ceramic tube is inserted into each of the two through holes on the upper part of the support plate; a support column is installed in a through hole on one side of the lower part of the support plate; and a support nut is installed in a through hole on the other side of the lower part of the support plate.

[0008] As a preferred technical solution, in the support assembly: the ceramic tube is a hollow structure that runs through the two support plates; the ignition electrode is inserted inside the ceramic tube; the support column is a cylindrical solid that is placed between the two support plates to provide support; the through hole corresponding to the support nut is a square hole, and the support nut is embedded between the corresponding square holes of the two support plates. A set screw is installed inside the support nut, and the entire support frame is fastened to the central gas gun by the set screw.

[0009] As a preferred technical solution, a small through hole for installing a grounding electrode is also provided in the middle position of the ceramic tube on the two support plates in the support frame placed at the front end of the central gas gun, so that the ignition electrode and the grounding electrode can be used together.

[0010] As a preferred technical solution, the swirl disk is a hollow sleeve structure, with eight deep grooves evenly opened along the circumference on the front side wall, and each groove opening is inclined.

[0011] As a preferred technical solution, the shortest distance between the tip of the ignition electrode and the front end of the grounding electrode is 1.5mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model improves ignition efficiency, stability and safety by optimizing the premixing method of fuel and combustion improver and the ignition structure; 2. This utility model is applicable to various industrial combustion equipment and has a wide range of applications; 3. The new swirl plate structure allows the combustion air to rotate clockwise as it passes through the slot, enhancing the turbulence of the mixed gas and improving flame stability by increasing the mixing degree of the combustion air and fuel gas. 4. The support frame can maintain the rigidity of the ignition electrode, effectively prevent the gap between the ignition electrode and the central gas gun from becoming smaller at the distance from the support, strictly control the insulation gap, and ensure stable combustion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0015] Figure 3This is a schematic diagram of the front end structure of the central gas gun.

[0016] Figure 4 This is a schematic diagram of a gas nozzle structure.

[0017] Figure 5 This is a schematic diagram of the swirl disk structure.

[0018] Figure 6 This is a top view schematic diagram of the ignition electrode and the ground electrode.

[0019] Figure 7 This is a schematic diagram of the front structure of the ignition electrode and the ground electrode.

[0020] Figure 8 This is a schematic diagram of the side structure of the ignition electrode and the grounding electrode.

[0021] Figure 9 This is a schematic diagram of the support frame structure.

[0022] Figure 10 This is a schematic diagram of the front end structure of the central gas gun.

[0023] Figure 11 This is a schematic diagram of the central gas gun and support frame structure of the present invention.

[0024] Figure 12 This is a schematic diagram of the ignition electrode connection structure.

[0025] In the diagram: power interface 1, gas interface 2, premixed sleeve 3, combustion air interface 4, central gas gun 5, support frame 6, swirl plate 7, ignition electrode 8, grounding electrode 9, gas nozzle 10, electrode head 11. The support frame 6 includes a support plate 6-1, a ceramic tube 6-2, a support column 6-3, a support nut 6-4, a set screw 6-5, a locking screw 6-6, and a locking nut 6-7. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See appendix Figure 1-12 The ignition gun disclosed in this utility model is an improvement on the existing ignition gun, including an ignition gun tube connector, a central gas gun 5, a premixed sleeve 3, a gas interface 2, and a combustion air interface 4; a power supply structure 1 is provided on the ignition gun tube connector. The ignition gun tube connector is connected to the premixed sleeve 3, the central gas gun 5 is placed inside the premixed sleeve 3, and the power supply connector 1 is located at one end of the ignition gun tube connector and connected to the electrode head 11 inside it. The gas interface 2 and the combustion air interface 4 are provided on the ignition gun tube connector, and the gas interface 2, which extends into the ignition gun tube connector, communicates with the central gas gun 5.

[0028] In a preferred embodiment, multiple support frames 6 are evenly fitted along the axial direction of the central gas gun 5; the ignition electrode 8, penetrating the premixing sleeve 3, is arranged parallel to the central gas gun 5 and mounted on the support frame 6 outside the central gas gun 5. Preferably, a grounding electrode 9, matching the ignition electrode 8, is also provided on the support frame 6 at the front end of the central gas gun 5. A gas nozzle 10 is installed at the front end of the central gas gun 5, and a swirl disk 7 is fitted around the gas nozzle 10. The free ends of both the ignition electrode 8 and the grounding electrode 9 are placed inside the swirl disk 7.

[0029] For natural gas, gas inlet 2 controls the gas pressure to 5-15 kPa. The inlet pressure of combustion air inlet 4 is affected by the length of premixed sleeve 3. When the length of premixed sleeve 3 is 1m, the pressure of combustion air inlet 4 needs to be controlled at 1.5 kPa, and for every 1m increase in the length of premixed sleeve 3, the combustion air pressure needs to increase by 1 kPa.

[0030] Preferably, the gas nozzle 10 is threadedly connected to the front end of the central gas gun 5. The gas nozzle 10 has 7 nozzle holes, including 1 axial nozzle hole and 6 radial nozzle holes. Since different gases have significantly different physical properties and combustion characteristics, to ensure the same ignition effect under the same gas pressure, different specifications of the gas nozzle 10 need to be used. When the gas is natural gas, the nozzle specification is 6×Φ1.3mm+Φ4.0mm; when the gas is propane, the nozzle specification is 6×Φ1.0mm+Φ2.5mm; and when the gas is coke gas, the nozzle specification is 8×Φ2.3mm+Φ5.0mm.

[0031] Preferably, the central gas gun 5 and the premixed sleeve 3 are arranged concentrically. The distance between the outlet end face of the central gas gun 5 and the outlet end face of the premixed sleeve is 2-2.5 times the inner diameter of the premixed sleeve. The ignition gun is an air-distribution type ignition gun, which is equipped with an air distribution system. By forcibly supplying air, the gas and combustion air are mixed in the premixed sleeve 3, resulting in high mixing uniformity, more complete combustion, and ensuring sufficient premixing, thus improving the premixing effect. To prevent backfire, the diameter d of the premixed sleeve is ≤50mm. At the same time, a swirl plate 7 is added at the gas outlet to change the flow state of the combustion air. When the combustion air passes through the swirl plate 7, the horizontal component force is increased, enhancing the mixing degree of the combustion air and gas. In this embodiment, the swirl plate 7 is a hollow sleeve structure, with eight deep grooves evenly opened along the circumference on its front side wall, and each groove opening is inclined. That is, there are 8 2mm wide slots on the swirl plate 7. Since the slot openings are inclined in the same direction, the combustion air can rotate clockwise when passing through the slot opening, which enhances the turbulence of the mixed gas. By increasing the mixing degree of the combustion air and the gas, the flame stability is improved.

[0032] In another preferred embodiment, the support frame 6 includes support plates 6-1, locking screws 6-6, and locking nuts 6-7. The two parallel support plates 6-1 are connected by a connector. In this embodiment, the connector includes locking bolts 6-6 and locking nuts 6-7, and the entire support frame is locked in place by the locking screws 6-6 and locking nuts 6-7. Through holes are provided at all four corners of the support plates 6-1, and a support assembly is provided between the two support plates 6-1.

[0033] Preferably, the support assembly includes a ceramic tube 6-2, a support column 6-3, and a support nut 6-4. The ceramic tube 6-2 is inserted into both of the two through holes at the upper part of the support plate 6-1; the support column 6-3 is installed in the through hole on one side of the lower part of the support plate 6-1; the support nut 6-4 is installed in the through hole on the other side of the lower part of the support plate 6-1, and a set screw 6-5 is screwed into the support nut 6-3.

[0034] Preferably, the ceramic tube 6-2 is hollow, penetrating both support plates 6-1; the ignition electrode 8 is inserted inside the ceramic tube 6-2. The support column 6-3 is a cylindrical solid, placed between the two support plates 6-1 for support; the support nut 6-4 has a square hole corresponding to its through hole, which is fitted into the corresponding square hole between the two support plates 6-1. A set screw is installed inside the support nut 6-4, which secures the entire support frame to the central gas gun. The ignition electrode 8 is arranged in the ceramic tube 6-2, with a minimum distance of 6mm between the central gas gun 5 and the ignition electrode 8, ensuring an insulation gap of at least 2.5mm. Simultaneously, to ensure the rigidity of the ignition electrode and prevent the gap between the ignition electrode 8 and the central gas gun 5 from narrowing away from the support, the spacing of the support frames 6 must be controlled within 300mm. In another preferred embodiment, a small through hole for installing a grounding electrode 9 is provided in the middle of the ceramic tube 6-2 on the two support plates 6-1, located in the support frame 5 at the front end of the central gas gun 5, so that the ignition electrode 8 and the grounding electrode 9 can be used together. Preferably, the shortest distance between the tip of the ignition electrode and the front end of the grounding electrode is 1.5mm to ensure that an electric arc can be effectively generated at this point.

[0035] In this embodiment, a power interface 1 is provided on the ignition gun barrel connector, and an electrode head 11 is installed inside the ignition gun barrel connector. One end of the electrode head 11 is connected to the power interface, and the other end is connected to the ignition electrode 8.

Claims

1. A high-speed premixed ignition gun, comprising an ignition gun tube connector, a central gas gun, a premixed sleeve, a gas interface, and a combustion air interface; characterized in that: The ignition gun tube connector is connected to the premixed sleeve, the central gas gun is placed inside the premixed sleeve, and the power connector is located at one end of the ignition gun tube connector and connected to the electrode head inside it. The gas interface and the combustion air interface are set on the ignition gun tube connector, and the gas interface extending into the ignition gun tube connector is connected to the central gas gun. Multiple support frames are evenly fitted on the central gas gun along its axial direction; the ignition electrode that penetrates the premixed sleeve is installed on the support frame; a grounding electrode that matches the ignition electrode is also provided on the support frame located at the front end of the central gas gun. A gas nozzle is installed at the front end of the central gas gun, and a swirl plate is fitted around the gas nozzle; the free ends of the ignition electrode and the grounding electrode are both placed inside the swirl plate.

2. The high-speed premixed ignition gun according to claim 1, characterized in that, The gas nozzle is threadedly connected to the central gas gun. The gas nozzle has 7 nozzle holes, including 1 nozzle hole in the axial direction and 6 nozzle holes in the radial direction.

3. The high-speed premixed ignition gun according to claim 1, characterized in that, The central gas gun and the premixed sleeve are arranged concentrically; the distance between the outlet end face of the central gas gun nozzle and the outlet end face of the premixed sleeve is 2-2.5 times the inner diameter of the premixed sleeve.

4. The high-speed premixed ignition gun according to claim 1, characterized in that, The support frame includes a ceramic tube and a support plate; Two parallel support plates are connected by a connector; each support plate has through holes at its four corners, and a support assembly is installed between the two support plates. The support assembly includes a ceramic tube, a support column, and a support nut; the ceramic tube is inserted into the two through holes on the upper part of the support plate; the support column is installed in the through hole on one side of the lower part of the support plate; and the support nut is installed in the through hole on the other side of the lower part of the support plate.

5. The high-speed premixed ignition gun according to claim 4, characterized in that, Among the supporting components: The ceramic tube has a hollow structure and is pierced by two support plates; the ignition electrode is inserted inside the ceramic tube. The support column is a solid cylinder, placed between two support plates to provide support; The through hole corresponding to the support nut is a square hole. The support nut is fitted between the corresponding square holes of the two support plates. A set screw is installed inside the support nut, and the entire support frame is fastened to the central gas gun by the set screw.

6. The high-speed premixed ignition gun according to claim 4, characterized in that, The support frame placed at the front end of the central gas gun has a small through hole in the middle of the ceramic tube on the two support plates for installing the grounding electrode, so that the ignition electrode and the grounding electrode can be used together.

7. The high-speed premixed ignition gun according to claim 1, characterized in that, The swirl plate is a hollow sleeve structure, with eight deep grooves evenly opened along the circumference on the front side wall, and each groove opening is inclined.

8. The high-speed premixed ignition gun according to claim 1, characterized in that, The shortest distance between the tip of the ignition electrode and the front end of the grounding electrode is 1.5 mm.

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