Blast furnace tuyere leak detection device
By adopting the butt socket design of the sealing plate structure and the metal pipe in the blast furnace air outlet air supply device, combining the inner sealing ring and the outer locking ring, the problem of insufficient sealing of the short-connected structure is solved, and the sealing and safety are improved. Reduced labor and cost consumption.
Patent Information
- Application Number
- CN202421084577.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The existing short-connection structure of blast furnace air outlet air supply device has insufficient sealing after use, resulting in wind running, burning red, etc., and lack of suitable auxiliary devices for testing, which poses great safety hazards and labor cost consumption.
A blast furnace air outlet leak detection device is designed, adopting the butt socket design of the sealing plate structure and the metal pipe, combining the inner sealing ring, outer locking ring, thread section and auxiliary gasket, sealing is achieved through thread butt and rubber gasket to ensure the connection. sealing and stability.
It effectively improves the sealing between the sealing structure and the short-term connection, reduces the risk of leakage, reduces the need for secondary rest and replacement, and improves the safety and efficiency of use.
Smart Images
Figure CN222205294U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blast furnaces, in particular to a blast furnace tuyere leakage detection device. Background Art
[0002] The existing blast furnace tuyere air supply device is a short-circuit structure. After the short-circuit is installed and used, there are very few sand holes that may cause air leakage, burning, etc. If the short-circuit is installed directly, there will be a great safety hazard, and the blast furnace needs to be shut down for a second time and replaced in time, which is time-consuming and labor-intensive; since the short-circuit structure is large, there is currently no suitable auxiliary device to detect it; to address this problem, a Chinese utility model with application number 202222923598.4 proposes a blast furnace tuyere short-circuit pressure leakage detection device, including a detection connecting pipe, a pressure relief valve, a pressure gauge, and a pair of sealing plates for sealing the two ports of the short-circuit, one sealing plate is provided with a connector for connecting to the inside of the short-circuit, one end of the detection connecting pipe is connected to the connector, and the other end of the detection connecting pipe is used to connect to an external air pressure source, and the pressure relief valve and the pressure gauge are both installed on the detection connecting pipe. The short-circuit pressure test and leak detection device for blast furnace tuyere has a reasonable structure design, which can test the short-circuit for leak detection, ensuring that there will be no air leakage after the short-circuit is put into use, greatly eliminating safety hazards, avoiding secondary air stoppage and replacement, and saving manpower and cost; but the problems when the device is used again are:
[0003] When the metal pipe is butt-connected with the sealing plate, the sealing chain connection is completed through the metal gasket, asbestos gasket and wedge head, but the sealing effect still needs to be improved during actual use.
[0004] Therefore, the utility model proposes a blast furnace tuyere leakage detection device. Utility Model Content
[0005] In view of the defects in the prior art, the utility model provides a blast furnace tuyere leak detection device, which can solve the problem of insufficient sealing when the existing sealing plate structure and the metal pipeline are connected.
[0006] In order to solve the above technical problems, the utility model proposes the following technical solutions:
[0007] A blast furnace tuyere leak detection device comprises a short circuit, the top of the short circuit is fixedly connected with a sealing plate structure, the top of the sealing plate structure is matched with a metal pipe, a docking sleeve is fixedly connected between the sealing plate structure and the metal pipe, an inner sealing ring is embedded in the docking sleeve, an outer locking ring is sleeved on the outer end of the docking sleeve, an auxiliary gasket is fixedly connected to the inner side of the outer locking ring, and a threaded section is fixedly arranged on the inner surface of the outer locking ring.
[0008] Furthermore, the sealing plate structure includes a fixedly connected sealing plate body and a docking ring at its bottom, an inner gasket is fixedly connected to the inner side of the docking ring, and an outer cushion layer is fixedly connected to the outer side of the bottom surface of the sealing plate body.
[0009] Furthermore, the docking ring and the top end of the short circuit are threadedly sleeved, the outer surface of the docking ring and the inner surface of the top end of the short circuit are both provided with threads, and two groups of inner gaskets are provided to fit the outer surface of the docking ring, namely asbestos gaskets and high-temperature resistant rubber gaskets, and the outer cushion layer is provided as a rubber cushion layer.
[0010] Furthermore, a support ring is provided on the outer side of the top end of the short circuit, and the support ring is located directly below both ends of the sealing plate structure.
[0011] Furthermore, the side profile of the inner sealing ring is trapezoidal, and the whole is configured as a high-temperature resistant rubber ring. The outer side of the inner sealing ring protrudes to the outer surface of the docking sleeve, and the outer side profile of the inner sealing ring is stepped.
[0012] Furthermore, a butt joint is fixedly connected to the bottom end of the metal pipe, and the butt joint is configured as a conical head and embedded in the butt joint sleeve.
[0013] Furthermore, the inner surface of the outer locking ring is annularly concave, and the inner upper and lower surfaces of the outer locking ring are threadedly connected to the outer surface of the docking sleeve and the outer surface of the docking pipe head through the threaded section.
[0014] Furthermore, the auxiliary gasket is located at the upper and lower positions on the inner side of the outer locking ring and at the inner side of the threaded section at the same time, and the auxiliary gasket is arranged corresponding to the upper and lower positions of the inner sealing ring.
[0015] It can be seen from the above technical solution that the beneficial effects of the utility model are:
[0016] 1. The butt joint ring is used to facilitate the threaded butt joint between the entire sealing plate structure and the short-circuit. The inner gasket is used to ensure the sealing of the butt joint ring and the top end of the short-circuit. The outer gasket is used to further ensure the sealing of the butt joint ring and the top end of the short-circuit.
[0017] 2. The outer locking ring cooperates with the threaded section to ensure the connection and fixation between the outer locking ring as a whole and the docking sleeve and the docking pipe head, and the auxiliary gasket ensures the contact and sealing effect between the outer locking ring and the inner sealing ring.
[0018] 3. The inner sealing ring is used to achieve a contact sealing effect from the inner side of the butt sleeve to the outer side of the butt joint head. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0020] Figure 1 It is a front view of the overall structure of the utility model;
[0021] Figure 2 This is a front view of the sealing plate structure connection in the utility model;
[0022] Figure 3 This is a front view of the connection between the inner and outer locking rings of the utility model;
[0023] Figure 4 For the utility model Figure 1 A magnified view of the structure at center;
[0024] Figure 5 For the utility model Figure 1 Enlarged view of the structure at point B in the middle.
[0025] Reference numerals:
[0026] 1. Short-circuit; 2. Metal pipe; 3. Sealing plate structure; 4. Sealing plate body; 5. Inner gasket; 6. Docking ring; 7. Outer cushion layer; 8. Docking sleeve; 9. Inner sealing ring; 10. Outer locking ring; 11. Auxiliary gasket; 12. Threaded section; 13. Butt joint; 14. Support ring. DETAILED DESCRIPTION
[0027] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0028] See also Figure 1-5As shown, a blast furnace tuyere leak detection device includes a short circuit 1, a sealing plate structure 3 is fixedly connected to the top of the short circuit 1, a metal tube 2 is matched with the top of the sealing plate structure 3, a docking sleeve 8 is fixedly connected between the sealing plate structure 3 and the metal tube 2, an inner sealing ring 9 is embedded in the butt sleeve 8, an outer locking ring 10 is sleeved on the outer end of the butt sleeve 8, an auxiliary gasket 11 is fixedly connected to the inner side of the outer locking ring 10, and a threaded section 12 is fixedly provided on the inner surface of the outer locking ring 10. When the device is in use, after connecting the sealing plate structure 3 and the short circuit 1, the metal tube 2 and the sealing plate structure 3 are connected to ensure the seal between the two, and finally, air pressure is introduced through an external air pressure source, the pressure gauge reading is recorded, and then the pressure is maintained for 30 minutes. After 30 minutes, the pressure gauge reading is observed and the pressure relief rate is calculated.
[0029] In the embodiment of the utility model, the sealing plate structure 3 includes a sealing plate body 4 fixedly connected and a docking ring 6 at its bottom position, the inner side of the docking ring 6 is fixedly connected with an inner gasket 5, the outer side of the bottom surface of the sealing plate body 4 is fixedly connected with an outer cushion layer 7, the docking ring 6 and the top end of the short-circuit 1 are threadedly sleeved, the outer surface of the docking ring 6 and the inner surface of the top end of the short-circuit 1 are both matched with threads, the inner gasket 5 is fitted with two groups of outer surfaces of the docking ring 6, namely an asbestos gasket and a high-temperature resistant rubber gasket, the outer cushion layer 7 is set as a rubber cushion layer, and the top outer side of the short-circuit 1 is surrounded by a support ring platform 14, and the support ring platform 14 is located directly below the two ends of the sealing plate structure 3 at the same time, and the effect of facilitating the threaded docking of the entire sealing plate structure 3 and the short-circuit 1 is achieved through the docking ring 6, the effect of ensuring the sealing of the docking ring 6 and the top end of the short-circuit 1 is achieved through the inner gasket 5, and the effect of further ensuring the sealing of the docking ring 6 and the top end of the short-circuit 1 is achieved through the outer cushion layer 7.
[0030] When the sealing plate structure 3 and the top of the short-circuit 1 are connected, the docking ring 6 and the inner side of the short-circuit 1 are threadedly sleeved, and at the same time, the inner gasket 5 at the outer position contacts the inner side of the short-circuit 1 to ensure the sleeve sealing between the docking ring 6 and the short-circuit 1. When the docking ring 6 and the short-circuit 1 are threadedly connected, the outer cushion layer 7 contacts the supporting ring platform 14 and is squeezed as the docking ring 6 and the short-circuit 1 are connected, thereby further achieving a sealing effect.
[0031] The inner sealing ring 9 has a trapezoidal side profile, and is overall a high-temperature resistant rubber ring. The outer side of the inner sealing ring 9 protrudes to the outer surface of the docking sleeve 8, and the outer side profile of the inner sealing ring 9 is stepped. The bottom end of the metal tube 2 is fixedly connected with a docking pipe joint 13, which is a conical head and embedded in the docking sleeve 8. The inner sealing ring 9 achieves a contact sealing effect from the inner side of the docking sleeve 8 to the outer side of the docking pipe joint 13.
[0032] The inner surface of the outer locking ring 10 is annularly concave, and the inner upper and lower surfaces of the outer locking ring 10 are threadedly connected to the outer surface of the docking sleeve 8 and the outer surface of the docking pipe head 13 through the threaded section 12. The auxiliary gasket 11 is located at the upper and lower positions of the inner side of the outer locking ring 10 and the inner side of the threaded section 12. The auxiliary gasket 11 corresponds to the upper and lower positions of the inner sealing ring 9. The outer locking ring 10 cooperates with the threaded section 12 to ensure the connection and fixation between the outer locking ring 10 as a whole and the docking sleeve 8 and the docking pipe head 13. The auxiliary gasket 11 is used to ensure the contact and sealing effect between the outer locking ring 10 and the inner sealing ring 9.
[0033] After the metal pipe 2 is connected with the butt joint 13 and the butt sleeve 8, the outer locking ring 10 is inserted between the butt joint 13 and the butt sleeve 8, and the user rotates the outer locking ring 10, and the outer locking ring 10 applies pressure to the inner sealing ring 9, so that the inner sealing ring 9 is squeezed inwardly to contact the butt joint 13 to achieve sealing. When the inner sealing ring 9 is squeezed inwardly, the auxiliary gasket 11 on the inner side of the outer locking ring 10 contacts the position between the upper and lower positions of the inner sealing ring 9 and the butt sleeve 8, forming a seal for this position to avoid leakage at this position.
[0034] The metal tube 2 is equipped with a pressure relief valve and a pressure gauge, and the outer end of the metal tube 2 is connected to an external air pressure source.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. A blast furnace tuyere leak detection device, comprising a short circuit (1), characterized in that: The top end of the short circuit (1) is fixedly connected to a sealing plate structure (3), the top end of the sealing plate structure (3) is matched with a metal tube (2), a butt sleeve (8) is fixedly connected between the sealing plate structure (3) and the metal tube (2), an inner sealing ring (9) is embedded in the butt sleeve (8), an outer locking ring (10) is sleeved on the outer end of the butt sleeve (8), an auxiliary gasket (11) is fixedly connected to the inner side of the outer locking ring (10), and a threaded section (12) is fixedly arranged on the inner surface of the outer locking ring (10).
2. A blast furnace tuyere leak detection device according to claim 1, characterized in that: The sealing plate structure (3) comprises a sealing plate body (4) which is fixedly connected and a docking ring (6) at its bottom, an inner gasket (5) is fixedly connected to the inner side of the docking ring (6), and an outer cushion layer (7) is fixedly connected to the outer side of the bottom surface of the sealing plate body (4).
3. A blast furnace tuyere leak detection device according to claim 2, characterized in that: The butt joint ring (6) and the top end of the short-circuit (1) are threadedly sleeved, the outer surface of the butt joint ring (6) and the inner surface of the top end of the short-circuit (1) are both matched with threads, and the inner gasket (5) is fitted on the outer surface of the butt joint ring (6) and is provided with two groups, namely an asbestos gasket and a high-temperature resistant rubber gasket, and the outer cushion layer (7) is provided as a rubber cushion layer.
4. A blast furnace tuyere leak detection device according to claim 1, characterized in that: A support ring platform (14) is arranged on the outer side of the top end of the short circuit (1), and the support ring platform (14) is located directly below both ends of the sealing plate structure (3).
5. A blast furnace tuyere leak detection device according to claim 1, characterized in that: The inner sealing ring (9) has a trapezoidal side profile and is configured as a high-temperature resistant rubber ring as a whole. The outer side of the inner sealing ring (9) protrudes to the outer surface of the docking sleeve (8), and the outer side profile of the inner sealing ring (9) is configured in a stepped shape.
6. A blast furnace tuyere leak detection device according to claim 1, characterized in that: The bottom end of the metal pipe (2) is fixedly connected with a butt joint (13), which is configured as a conical head and is embedded in the butt joint sleeve (8).
7. A blast furnace tuyere leak detection device according to claim 1, characterized in that: The inner surface of the outer locking ring (10) is annularly concave, and the inner upper and lower surfaces of the outer locking ring (10) are threadedly connected to the outer surface of the docking sleeve (8) and the outer surface of the docking pipe head (13) through the threaded section (12).
8. A blast furnace tuyere leak detection device according to claim 1, characterized in that: The auxiliary gasket (11) is located at the upper and lower positions on the inner side of the outer locking ring (10) and at the inner side of the threaded section (12). The auxiliary gasket (11) is arranged corresponding to the upper and lower positions of the inner sealing ring (9).