A high-efficiency igniter sealing assembly device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN HAISHAN MASCH MFG CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-06-30
Smart Images

Figure CN224434465U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sealing technology, specifically to a high-efficiency igniter sealing assembly device. Background Technology
[0002] Reaction temperature is a key control parameter in catalytic cracking unit production, and it is also the most sensitive parameter to product yield and quality. Higher reaction temperatures result in faster cracking reactions and higher conversion rates. Increasing the reaction temperature increases dry gas production, leading to a decrease in coke yield while maintaining the same conversion rate. It also increases the yields of propylene and butene, and the octane number of gasoline. During normal production, the temperature required for the chemical reactions in the catalytic cracking unit is provided by the combustion of coke adsorbed in the catalyst in the regenerator. However, in the initial startup phase, the heat required for the reactions can only be supplied by a dedicated horizontal auxiliary combustion furnace to ensure the normal progress of various chemical reactions in the catalytic cracking feedstock.
[0003] The applicant discovered through a search that a Chinese patent discloses "An igniter for an auxiliary combustion furnace including a sealing device," with publication number "CN 206989248." The patented "U" design includes an auxiliary combustion furnace, a gas sleeve, an igniter, a gas line, a non-purified air line, a first ball valve, a second ball valve, and a sealing assembly. The gas sleeve and the auxiliary combustion furnace are connected at the outlet. One end of the igniter is the operating end, and the other end is the working end; the operating end of the igniter remains outside the auxiliary combustion furnace, while the working end extends through the gas sleeve into the auxiliary combustion furnace. The gas line and the non-purified air line are located on the gas sleeve. The first and second ball valves are sequentially arranged from the inside to the outside of the gas sleeve, both located outside the gas line and the non-purified air line. The sealing assembly includes a first sealing assembly located inside the end of the gas sleeve and a second sealing assembly located at the operating end of the igniter; the second sealing assembly is threadedly connected to the first sealing assembly. This invention ensures zero leakage of pressurized high-temperature hot air in the auxiliary combustion furnace during the removal of the igniter. However, in actual use, the single locking mechanism results in poor sealing performance. Summary of the Invention
[0004] Therefore, this application provides a high-efficiency igniter sealing assembly device to solve the problem that the single locking mechanism in the prior art results in poor sealing performance.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] In a first aspect, a high-efficiency igniter sealing assembly device includes an igniter body, characterized in that a connector is fixedly connected to the end of the igniter body, a sleeve is sleeved on the outside of the connector, a sealing assembly includes two sealing expansion rings, both of which are embedded inside the sleeve, three connecting pipes are fixedly connected to the outside of the two sealing expansion rings, an air inlet pipe is fixedly connected to the top of the top connecting pipe, a telescopic pipe is rotatably connected to the outside of the air inlet pipe, a pressure bladder is fixedly connected to the top of the telescopic pipe, a magnet is fixedly connected to the end of the connector away from the igniter body, and an iron groove is formed inside the sleeve, which, when used... During use, by securing the connector inside the sleeve and pressing the pressure bladder, air enters through the inlet pipe via the telescopic tube. Through the three connecting tubes, the air entering from the inlet pipe is evenly distributed into the two sealing expansion rings. Once inside the two sealing expansion rings, the gas expands, filling the gap between the connector and the sleeve. This also confines the connector inside the sleeve, ensuring a tight seal for the entire igniter body within the sleeve. Furthermore, the combination of a magnet and an iron groove allows the magnet to adhere to the iron groove, further limiting the connector's position and enhancing the overall stability of the device.
[0007] Optionally, the connector has an annular groove on its outer side that fits against the sealing expansion ring. The sealing expansion ring is fitted onto the outside of the annular groove, and also fits onto the inside of the annular groove, which can achieve fitting and limiting of the entire connector.
[0008] Optionally, the magnet can be fully engaged inside the iron groove, with the iron groove and magnet facing each other. The magnet is attracted to the inside of the iron groove, which allows the connector to be securely confined inside the sleeve, improving the installation stability of the igniter body.
[0009] Optionally, a retaining sleeve is fixedly connected to the outside of the sleeve, and the retaining sleeve has thirteen retaining slots inside. Three retaining blocks are fixedly connected to the outside of the connector, and the retaining blocks can engage with the inside of the retaining slots, thus achieving a path for the connector to engage with the inside of the sleeve.
[0010] Optionally, each of the three slots is opposite to one of the three blocks, and the three blocks are evenly arranged in a semi-circular shape, allowing them to smoothly engage inside the slots.
[0011] Optionally, each of the three slots is fixedly connected with a protruding button, and each of the three blocks has a drainage groove on the outer side of its end away from the igniter body. The protruding button can limit the block after it is engaged in the slot, improving the stability of the igniter body. The drainage groove can facilitate the smooth sliding of the protruding button through the block.
[0012] Optionally, the telescopic tube and the air intake pipe are connected by a threaded rotatable connection, and a sealing ring is fixedly connected to the side of the telescopic tube that contacts the air intake pipe. This threaded rotatable connection facilitates the assembly and disassembly of the telescopic tube.
[0013] Optionally, a pressure relief valve is rotatably connected to the outside of the intake pipe. The pressure relief valve allows the gas inside the sealing expansion ring to be discharged to the outside, enabling quick disassembly of the connector.
[0014] Compared with the prior art, this application has at least the following beneficial effects:
[0015] 1. During use, by inserting the connector into the inside of the sleeve and then pressing the pressure bladder, the air inside can enter through the telescopic tube and the air inlet pipe. Through the three connecting tubes, the air entering from the air inlet pipe can be evenly distributed into the two sealing expansion rings. When the gas enters the two sealing expansion rings, it will expand, which can fill the gap between the connector and the inside of the sleeve. At the same time, it can also confine the connector inside the sleeve, achieving a seal for the entire igniter body inside the sleeve.
[0016] 2. By combining the magnet and the iron trough, the magnet can be attracted to the inside of the iron trough, thereby achieving adsorption and limiting of the entire connector and further improving the stability of the overall device. Attached Figure Description
[0017] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).
[0018] Figure 1 This application provides an external structural schematic diagram of a high-efficiency igniter sealing assembly device according to one embodiment of the present application;
[0019] Figure 2 This application provides a schematic diagram of the internal structure of a high-efficiency igniter sealing assembly device according to one embodiment of the present application.
[0020] Figure 3 This is a structural diagram illustrating the internal disassembly of a high-efficiency igniter sealing assembly device according to one embodiment of this application;
[0021] Figure 4 An embodiment of this application provides a high-efficiency igniter sealing assembly device. Figure 3 Enlarged structural diagram at point A in the middle.
[0022] Explanation of reference numerals in the attached figures:
[0023] In the diagram: 1. Sleeve; 2. Igniter body; 3. Clamping sleeve; 4. Connector; 5. Inlet pipe; 6. Telescopic pipe; 7. Pressure bladder; 8. Clamping block; 9. Clamping groove; 10. Protruding button; 11. Iron groove; 12. Magnet; 13. Drainage groove; 14. Pressure relief valve; 15. Sealing expansion ring; 16. Connecting pipe. Detailed Implementation
[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example
[0025] like Figures 1 to 4 As shown, a high-efficiency igniter sealing assembly device according to the first aspect of this utility model includes an igniter body 2. The igniter body 2 is characterized by a connector 4 fixedly connected to its end, a sleeve 1 sleeved around the connector 4, and a sealing assembly including two sealing expansion rings 15, both of which are embedded inside the sleeve 1. Three connecting pipes 16 are fixedly connected to the outside of the two sealing expansion rings 15. An air inlet pipe 5 is fixedly connected to the top of the top connecting pipe 16, and a telescopic pipe 6 is rotatably connected to the outside of the air inlet pipe 5. A pressure bladder 7 is fixedly connected to the top of the telescopic pipe 6. A magnet 12 is fixedly connected to the end of the connector 4 away from the igniter body 2. An iron groove 11 is formed inside the sleeve 1. During use, by engaging the connector 4 inside the sleeve 1 and then pressing the pressure bladder 7, the internal space can be expanded. Gas enters through the inlet pipe 5 via the telescopic tube 6. Through three connecting pipes 16, the air entering from inside the inlet pipe 5 is evenly distributed into the two sealing expansion rings 15. Once inside the two sealing expansion rings 15, the gas expands, filling the gap between the connector 4 and the sleeve 1. This also confines the connector 4 within the sleeve 1, ensuring a tight seal for the entire igniter body 2 within the sleeve 1. Furthermore, the combination of the magnet 12 and the iron groove 11 allows the magnet 12 to adhere to the iron groove 11, achieving adsorption and limiting of the connector 4, further improving the overall stability of the device. The connector 4 has an annular groove on its exterior that fits into the sealing expansion ring 15. The sealing expansion ring 15 fits onto the outside of the annular groove and into the annular groove, thus limiting the fit of the connector 4.
[0026] The sleeve 1 is externally fixedly connected to a retaining sleeve 3, which has thirteen retaining slots 9 inside. The connector 4 is externally fixedly connected to three retaining blocks 8, which can engage inside the retaining slots 9, allowing the connector 4 to engage inside the sleeve 1. The three retaining slots 9 are opposite to the three retaining blocks 8, which are evenly arranged in a semi-circular shape, allowing the semi-circular retaining blocks 8 to smoothly engage inside the retaining slots 9.
[0027] Optionally, each of the three slots 9 has a fixedly connected protruding button 10 inside, and each of the three blocks 8 has a drainage groove 13 on the outside of the end away from the igniter body 2. The protruding button 10 can limit the block 8 after it is engaged in the slot 9, improving the stability of the igniter body 2. The drainage groove 13 can facilitate the smooth sliding of the protruding button 10 through the block 8. The telescopic tube 6 and the air inlet pipe 5 are connected by a threaded rotation. The side of the telescopic tube 6 that is in contact with the air inlet pipe 5 is fixedly connected with a sealing ring. The threaded rotation connection can facilitate the disassembly and assembly of the telescopic tube 6.
[0028] Optionally, a pressure relief valve 14 is rotatably connected to the outside of the intake pipe 5. The pressure relief valve 14 allows the gas inside the sealing expansion ring 15 to be discharged to the outside, enabling quick disassembly of the connector 4.
[0029] The technical effect achieved by the above embodiment is as follows: During use, by inserting the connector 4 into the inside of the sleeve 1, and then pressing the pressure bladder 7, the air inside can enter through the telescopic tube 6 from the air inlet pipe 5. Through the three connecting tubes 16, the air entering from the inside of the air inlet pipe 5 can be evenly introduced into the inside of the two sealing expansion rings 15. When the gas enters the inside of the two sealing expansion rings 15, it will expand, which can fill the gap between the connector 4 and the inside of the sleeve 1. At the same time, the connector 4 can be confined inside the sleeve 1, thus achieving the sealing of the entire igniter body 2 inside the sleeve 1. Example
[0030] like Figures 1 to 4 As shown, a high-efficiency igniter sealing assembly device includes all the contents of Embodiment 1. In addition, the magnet 12 can be completely engaged inside the iron groove 11. The iron groove 11 and the magnet 12 are opened opposite each other. The magnet 12 is attracted to the inside of the iron groove 11, which can make the connector 4 firmly confined inside the sleeve 1, improving the installation stability of the igniter body 2.
[0031] The technical effect achieved by the above embodiment is that by combining the magnet 12 and the iron groove 11, the magnet 12 can be attracted to the inside of the iron groove 11, thereby achieving adsorption and limiting of the entire connector 4 and further improving the stability of the overall device.
[0032] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.
Claims
1. A high efficiency igniter seal assembly device comprising an igniter body (2) characterized by, The igniter body (2) is fixedly connected to a connector (4) at its end. A sleeve (1) is fitted over the connector (4). A sealing assembly is provided. The sealing assembly includes two sealing expansion rings (15). Both sealing expansion rings (15) are embedded inside the sleeve (1). Three connecting pipes (16) are fixedly connected to the outside of the two sealing expansion rings (15). An air inlet pipe (5) is fixedly connected to the top of the top connecting pipe (16). A telescopic pipe (6) is rotatably connected to the outside of the air inlet pipe (5). A pressure bladder (7) is fixedly connected to the top of the telescopic pipe (6). A magnet (12) is fixedly connected to the end of the connector (4) away from the igniter body (2). An iron groove (11) is provided inside the sleeve (1).
2. The high-efficiency igniter sealing assembly device according to claim 1, characterized in that, The connector (4) has an annular groove on its outside that fits with the sealing expansion ring (15), and the sealing expansion ring (15) fits onto the outside of the annular groove.
3. The high-efficiency igniter sealing assembly device according to claim 1, characterized in that, The magnet (12) can be completely engaged inside the iron groove (11), and the iron groove (11) and the magnet (12) are opposite each other.
4. The high-efficiency igniter sealing assembly device according to claim 1, characterized in that, The sleeve (1) is fixedly connected to the outside with a ferrule (3), and the ferrule (3) has thirteen slots (9) inside. The connector (4) is fixedly connected to the outside with three blocks (8).
5. The high-efficiency igniter sealing assembly device according to claim 4, characterized in that, The three card slots (9) are all opened opposite to the three card blocks (8), and the three card blocks (8) are evenly arranged in a semi-circular shape.
6. The high-efficiency igniter sealing assembly device according to claim 4, characterized in that, The interior of each of the three slots (9) is fixedly connected with a protruding button (10), and the exterior of each of the three blocks (8) away from the igniter body (2) is provided with a drainage groove (13).
7. The high-efficiency igniter sealing assembly device according to claim 1, characterized in that, The telescopic tube (6) and the air inlet tube (5) are connected by a threaded rotation. The side of the telescopic tube (6) that is in contact with the air inlet tube (5) is fixedly connected with a sealing ring.
8. The high-efficiency igniter sealing assembly device according to claim 1, characterized in that, The intake pipe (5) is externally rotatably connected to a pressure relief valve (14).