Ignition gun with shade waterproof structure
By designing a waterproof shielding structure on the ignition gun and utilizing a combination of an umbrella-shaped shield and an O-ring, the problem of moisture infiltration into the elevated flare ignition gun in the high-altitude environment was solved, thereby improving waterproof performance and convenience of maintenance, and reducing the frequency of failures and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUZHOU COMBUSTION CONTROL RES INST
- Filing Date
- 2025-04-23
- Publication Date
- 2026-05-08
AI Technical Summary
Existing elevated flare ignition guns are prone to rainwater and condensation seeping into the housing in high-altitude environments, leading to decreased conductivity or short circuits, making maintenance difficult and dangerous.
An ignition gun with a waterproof shielding structure was designed. It adopts a multi-segment hollow cylindrical metal shell and a waterproof front transition pipe with an umbrella-shaped shielding structure, combined with a high-temperature resistant O-ring to prevent rainwater and condensate from seeping in and ensure the sealing of the threaded connection.
It effectively prevents moisture from entering the ignition gun, improves the ignition gun's waterproof performance, reduces the frequency of malfunctions caused by water ingress, facilitates maintenance and replacement, and has a simple structure and low cost.
Smart Images

Figure CN224215375U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ignition device technology, specifically to an ignition gun with a waterproof shielding structure suitable for industrial torches and various industrial burners. Background Technology
[0002] An industrial flare is a device used to burn excess combustible gases or waste gases generated during industrial production. Its main function is to safely burn excess hydrocarbon gases that cannot be recovered or recycled, preventing their direct release into the atmosphere and thus reducing environmental pollution while ensuring the safe operation of industrial facilities. Industrial flares are widely used in industries such as petroleum and petrochemicals, waste treatment, coal chemicals, and pharmaceuticals.
[0003] The flare head of an elevated flare is typically located 20 to 150 meters above the ground. It is used to handle large quantities of combustible gases. Its advantage lies in the ability of the heat and smoke generated during combustion to diffuse at a higher altitude, reducing its impact on the ground. Each flare head is equipped with a continuous flame, and each flame is further equipped with an explosion-proof high-energy igniter, ignition cable, and ignition gun to ensure that the flame can ignite and burn stably under harsh high-altitude conditions, providing a continuous flame source for the flare.
[0004] Because conventional elevated flare lights are installed vertically, although the nozzle has a rain cover and a protective sleeve, the semi-open structure cannot completely prevent rainwater from wetting the nozzle casing. Water vapor from the surrounding environment and water vapor produced by combustion may condense on the nozzle surface, often causing water droplets to seep in through the threaded connection of the nozzle. This can lead to water vapor accumulating inside the nozzle, reducing its conductivity, or causing a short circuit due to excessive water ingress, thus preventing normal ignition.
[0005] The permanent lights of the elevated torch are quite high above the ground, making it very inconvenient and dangerous to replace the ignition gun or nozzle. Therefore, it is essential to provide an ignition gun that can be effectively waterproofed to solve the above problems. Utility Model Content
[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an ignition gun with a waterproof shield that is simple in structure, small in size, easy to use, and low in cost.
[0007] To achieve the above objectives, this utility model provides an ignition gun with a waterproof shielding structure, comprising a housing, a central electrode, a semiconductor block, an insulating fixing support tube, and an ignition cable connector. The housing is composed of multiple hollow cylindrical metal structural components connected together. A sleeve-type semiconductor block is installed inside the left end hole of the housing, and an ignition cable connector is installed at the right end. A waterproof pre-transition pipe and a waterproof post-transition pipe are provided between the housing and the ignition cable connector. The left end of the waterproof pre-transition pipe is connected to the housing, and the right end of the waterproof post-transition pipe is connected to the housing. The housing contains a structure that passes through the semiconductor block, the waterproof pre-transition pipe, and the waterproof post-transition pipe. The central electrode of the connecting tube is a long electrode formed by connecting multiple short electrodes into one unit. The central electrode is externally fitted with multiple insulating and fixing support tubes of varying diameters inserted together within the housing. The semiconductor block and the insulating and fixing support tubes together fix and support the central electrode at the center of the housing. The waterproof pre-transition connecting tube is fitted onto the waterproof post-transition connecting tube, and an O-ring is provided between the two. The ignition cable connector is threaded or welded to the housing, with an open right end and external threads, which are connected and fixed to the internally threaded ignition cable connector via the external threads.
[0008] The shell is composed of multiple short hollow cylindrical metal tubes welded axially to form a longer hollow cylindrical metal tube.
[0009] One end of the waterproof transition pipe is welded and fixed to the shell.
[0010] The waterproof pre-transition connecting pipe has an umbrella-shaped shield structure.
[0011] The cover connecting the waterproof pre-transition pipe and the waterproof post-transition pipe has a fixing groove for installing O-rings.
[0012] The O-ring is a high-temperature resistant rubber O-ring or a copper O-ring.
[0013] The waterproof pre-transition pipe and the waterproof post-transition pipe are connected by thread or by compression fitting.
[0014] The gap between the central electrode and the semiconductor block is filled with glass powder that undergoes high-temperature sintering.
[0015] Beneficial Effects: Due to the adoption of the above technical solution, the ignition gun of this utility model has a novel structure, utilizing both a physical structural shield and a sealing O-ring to waterproof the threaded connection. The physical structural shield can block rainwater and condensation flowing from the outside of the housing, while the O-ring can prevent condensation from entering the threaded connection due to siphoning. This achieves effective waterproofing while maintaining easy disassembly and assembly of the threaded structure, ensuring a secure fixation, and having no impact on the ignition of the lighter. Rainwater falling on the ignition gun housing flows to the umbrella-shaped shield structure of the waterproof transition pipe and can directly pass through the shield structure past the threaded connection between the waterproof transition pipe and the waterproof transition pipe, preventing a large amount of water on the housing from seeping into the ignition gun through the threads. In addition, because an O-ring is installed inside the waterproof transition pipe, even if some condensation on the surface of the ignition gun housing enters the threaded connection due to siphoning, it will be blocked at the O-ring and will not enter the ignition gun, thus greatly improving the waterproof performance of the ignition gun and reducing the frequency of replacement of the ignition head due to water damage. Its structure is simple, its size is small, and its cost is very low. It is easy to replace and maintain, and has wide applicability and considerable economic benefits. Attached Figure Description
[0016] Figure 1 This is a cross-sectional structural diagram of the present invention.
[0017] Figure 1 In the middle: 1-shell, 2-center electrode, 3-semiconductor block, 4-insulating fixing support tube, 5-waterproof front transition tube, 6-O-ring, 7-waterproof rear transition tube, 8-ignition cable connector.
[0018] Figure 2 yes Figure 1 Enlarged cross-sectional structural diagram of the waterproof pre-transition pipe 5, O-ring 6, and waterproof post-transition pipe 7.
[0019] Figure 3 Book Figure 1 A magnified cross-sectional schematic diagram of the waterproof pre-transition connecting pipe 5 in the middle. Detailed Implementation
[0020] An embodiment of the present invention will be further described below with reference to the accompanying drawings:
[0021] This utility model discloses an ignition gun with a waterproof shielding structure, mainly composed of a housing 1, a central electrode 2, a semiconductor block 3, an insulating fixing support tube 4, a waterproof front transition tube 5, an O-ring 6, a waterproof rear transition tube 7, and an ignition cable connector 8. The central electrode 1 is a long electrode composed of several short electrodes connected in sequence by threads; the specific length of each short electrode is determined according to actual usage. The central electrode 2 penetrates the entire housing 1 and is coaxial with it. The semiconductor block 3 has a central opening and is a specially designed hollow irregular structure, fitted onto the outside of the central electrode and installed at the leftmost end of the housing. Glass powder is filled in the gap between the central electrode 2 and the semiconductor block 3 and sintered at high temperature. Multiple insulating fixing support tubes 4 are inserted together on the outside of the central electrode 2. The insulating fixed support tube 4 is a sleeve with different diameters. The semiconductor block 3 and the insulating fixed support tube 4 together fix and support the central electrode 2 at the center of the housing 1. The housing 1 is a hollow cylindrical metal tube, which is formed by axially welding several short housing sections into a longer housing. The left end of the waterproof pre-transition connecting tube 5 is welded to the housing 1, and the right end is open, with internal threads and a groove for installing and fixing the O-ring 6. The left end of the waterproof post-transition connecting tube 7 is open, with external threads, and is fixed to the waterproof pre-transition connecting tube 5 by threads, and presses the O-ring 6 installed in the groove of the waterproof pre-transition connecting tube 5. The right end is welded to the housing 1. The left end of the ignition cable connector 8 is welded to the housing 1, and the right end is open, with external threads, and is connected and fixed to the ignition cable connector with internal threads by external threads.
[0022] A waterproof pre-transition pipe 5 and a waterproof post-transition pipe 7 are provided between the housing 1 and the ignition cable connector 8. The right end of the waterproof pre-transition pipe 5 has an O-ring 6 mounting groove, and an O-ring 6 is installed in the groove. The waterproof pre-transition pipe 5 has an umbrella-shaped shield structure. The O-ring 6 is a high-temperature resistant rubber O-ring or a copper O-ring. The waterproof pre-transition pipe 5 and the waterproof post-transition pipe 7 are connected and fixed using threads, compression fittings, or other similar connection methods. When the ignition gun is used on an elevated torch, [the following is missing from the original text]. Figure 1 Installed vertically upwards on the left, after connecting the ignition cable and igniter through the ignition cable connector 8, the high voltage generated by the igniter can be conducted through the ignition cable to the front end of the center electrode 2 of the ignition gun, that is, the semiconductor block 3 side. When it cooperates with the semiconductor block 3, a high-energy electric spark can be generated at the front end of the ignition gun to ignite the gaseous fuel in the torch lamp.
Claims
1. An ignition gun with a waterproof shielding structure, characterized in that: It includes a housing (1), a central electrode (2), a semiconductor block (3), an insulating fixed support tube (4), and an ignition cable connector (8); the housing (1) is a hollow cylindrical metal tube, with a sleeve-type semiconductor block (3) inside the left end hole of the housing (1), and an ignition cable connector (8) at the right end. The semiconductor block (3) has a central opening and is a specially made hollow irregular structure. A waterproof pre-transition pipe (5) and a waterproof post-transition pipe (7) are provided between the housing (1) and the ignition cable connector (8). The left end of the waterproof pre-transition pipe (5) is connected to the housing (1), and the right end of the waterproof post-transition pipe (7) is connected to the housing (1); the housing (1) contains a pipe that passes through the semiconductor block (3), the waterproof pre-transition pipe (5), and the waterproof post-transition pipe (7). The center electrode (2) of the transition tube (7) is a long electrode formed by connecting multiple short electrodes into one piece; the center electrode (2) is fitted with multiple insulating fixed support tubes (4) of different diameters inserted together inside the housing (1); the semiconductor block (3) and the insulating fixed support tubes (4) together fix and support the center electrode (2) at the center of the housing (1); the waterproof pre-transition tube (5) is fitted on the waterproof post-transition tube (7); an O-ring (6) is provided between the waterproof pre-transition tube (5) and the waterproof post-transition tube (7); the ignition cable connector (8) is welded and fixed to the housing (1), with an open right end and external threads, and is connected and fixed to the ignition cable connector with internal threads through the external threads.
2. The ignition gun with a waterproof shielding structure according to claim 1, characterized in that; The shell (1) is composed of multiple short hollow cylindrical metal tubes welded axially to form a longer hollow cylindrical metal tube.
3. The ignition gun with a waterproof shielding structure according to claim 1, characterized in that: One end of the waterproof transition pipe (5) is welded and fixed to the shell (1).
4. The ignition gun with a waterproof shielding structure according to claim 1, characterized in that: The waterproof pre-transition pipe (5) has an umbrella-shaped shield structure.
5. The ignition gun with a waterproof shielding structure according to claim 1, characterized in that: The cover connecting the waterproof front transition pipe (5) and the waterproof rear transition pipe (7) has a fixing groove for installing O-rings (6).
6. The ignition gun with a waterproof shielding structure according to claim 1, characterized in that: The O-ring (6) is a high-temperature resistant rubber O-ring or a copper O-ring.
7. The ignition gun with a waterproof shielding structure according to claim 1, characterized in that: The waterproof pre-transition pipe (5) and the waterproof post-transition pipe (7) are connected by thread or by compression fitting.
8. The ignition gun with a waterproof shielding structure according to claim 1, characterized in that: The gap between the central electrode (2) and the semiconductor block (3) is filled with glass powder that is sintered at high temperature.