Composite waveguide constant-pressure sealing assembly and magnetofluid damping ring
By using a composite waveguide constant pressure sealing assembly and a magnetohydrodynamic damping ring, the sealing problem caused by vibration loosening of the waveguide channel was solved, achieving a stable connection and improved sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU DIANZI UNIVERSTIY INFORMATION ENG SCHOOL
- Filing Date
- 2025-06-09
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional waveguide connections are prone to loosening during vibration, affecting sealing performance.
A composite waveguide constant pressure sealing assembly and a magnetohydrodynamic damping ring are used. The constant pressure assembly's tension spring maintains a tight connection of the waveguide, while the magnetohydrodynamic damping ring limits the microwave flow rate to prevent vibration.
It improves the sealing and stability of waveguide channel connections, extends service life, and prevents microwave vibration from affecting the sealing performance.
Smart Images
Figure CN224120830U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of microwave waveguide transmission technology, and in particular to a composite waveguide constant pressure sealing assembly and a magnetohydrodynamic damping ring. Background Technology
[0002] A waveguide is a structure used to guide electromagnetic waves in a specific direction. In electromagnetics and communication engineering, the term waveguide can refer to any linear structure that transmits electromagnetic waves between its endpoints. Originally and most commonly, it referred to a hollow metal tube used to transmit radio waves. In practice, waveguides are often segmented and assembled to form a complete transmission line. Each segment needs to be secured and sealed, so flange structures are typically used, with multiple screws and nuts used to lock the two waveguide segments together.
[0003] Traditional waveguide connections are mostly fixed together using bolts and flanges to secure the two pipes. However, in actual use, the equipment may vibrate during waveguide transmission, which can cause the bolts to loosen and affect the sealing of the pipe connection. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a composite waveguide constant pressure sealing assembly and a magnetohydrodynamic damping ring, which aims to improve the problem of the sealing performance of pipe connections affected by vibration in existing devices.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A composite waveguide constant pressure sealing assembly includes a first waveguide and a second waveguide. One side surface of the first waveguide and the second waveguide are tightly fitted together. A sealing groove is formed on one side of the first waveguide. A sealing block is fixedly connected to one side of the second waveguide, and the sealing block is inserted into the sealing groove. A composite sealing ring is provided inside the sealing groove, and the sealing block abuts against the composite sealing ring and presses the composite sealing ring inward. Fixing blocks are fixedly connected to both sides of the first waveguide and the second waveguide. A constant pressure assembly is provided between the two fixing blocks. One side surface of the sealing block is coated with a hot melt adhesive coating.
[0007] Preferably, the constant pressure assembly includes a connecting block and a tension spring, the connecting block being disposed on the opposite side of the fixed block, and the two ends of the tension spring being fixedly installed between the two connecting blocks.
[0008] Preferably, a mounting block is fixedly connected to one side of the connecting block, and a third screw hole is provided on the surface of the mounting block.
[0009] Preferably, the fixing block has an internal mounting groove, and the mounting block is placed inside the mounting groove. The top surface of the fixing block has a first screw hole, and the first screw hole passes through the interior of the mounting groove.
[0010] Preferably, the top surface of the fixing block is provided with a fixing bolt, and the bottom end of the fixing bolt extends into the interior of the third screw hole.
[0011] Preferably, a first fixing ring is fixedly sleeved on the outer surface of the first waveguide, and a second fixing ring is fixedly sleeved on the outer surface of the second waveguide, with a second screw hole extending through the surfaces of the first fixing ring and the second fixing ring.
[0012] Preferably, a screw is inserted between the second screw holes, and a nut is installed at the end of the screw.
[0013] Preferably, the magnetohydrodynamic damping ring further includes damping ring bodies, two of which are fixedly installed on the inner walls of the first waveguide and the second waveguide, and the interior of the two damping ring bodies is filled with magnetohydrodynamic fluid.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, a constant pressure component is provided. During use, when the first waveguide and the second waveguide are connected, the tension spring in the constant pressure component can always keep the first waveguide and the second waveguide connected to each other. This can compensate for the pressure of the first waveguide and the second waveguide pushing against each other, prevent the pipes from separating due to pipe vibration, and ensure their sealing performance during use.
[0016] 2. In this utility model, a damping ring and a magnetofluid are set inside the first waveguide and the second waveguide. When microwaves pass through the inside of the pipe, the magnetofluid inside the damping ring can limit the flow rate of the microwaves, thereby preventing the microwaves from flowing too fast and causing excessive vibration to the pipe, which would affect the sealing of the pipe connection. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the composite waveguide constant pressure sealing assembly and magnetohydrodynamic damping ring proposed in this utility model.
[0018] Figure 2 This is a schematic diagram of the sealing groove position structure of the composite waveguide constant pressure sealing assembly and the magnetohydrodynamic damping ring proposed in this utility model.
[0019] Figure 3 This is a schematic diagram of the sealing block position structure of the composite waveguide constant pressure sealing assembly and the magnetohydrodynamic damping ring proposed in this utility model.
[0020] Figure 4 This is a cross-sectional view of the first waveguide structure of the composite waveguide constant pressure sealing assembly and magnetohydrodynamic damping ring proposed in this utility model.
[0021] Figure 5 This is a schematic diagram of the constant pressure component structure of the composite waveguide constant pressure sealing component and the magnetohydrodynamic damping ring proposed in this utility model.
[0022] Legend:
[0023] 1. First waveguide; 2. Second waveguide; 3. First fixing ring; 4. Second fixing ring; 5. Screw; 6. Nut; 7. Fixing block; 8. Connecting block; 9. Tension spring; 10. Mounting groove; 11. First screw hole; 12. Second screw hole; 13. Sealing groove; 14. Damping ring body; 15. Composite sealing ring; 16. Magnetorheological fluid; 17. Hot melt adhesive coating; 18. Mounting block; 19. Third screw hole; 20. Fixing bolt; 21. Sealing block. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 An embodiment of this utility model provides a composite waveguide constant pressure sealing assembly, including a first waveguide 1 and a second waveguide 2. The surfaces of the first waveguide 1 and the second waveguide 2 are tightly fitted together. A sealing groove 13 is provided on one side of the first waveguide 1. A sealing block 21 is fixedly connected to one side of the second waveguide 2, and the sealing block 21 is inserted into the interior of the sealing groove 13. A composite sealing ring 15 is provided inside the sealing groove 13, and the sealing block 21 abuts against the composite sealing ring 15 and presses the composite sealing ring 15 inward. Fixing blocks 7 are fixedly connected to both sides of the first waveguide 1 and the second waveguide 2. A constant pressure assembly is provided between the two fixing blocks 7. A hot melt adhesive coating 17 is coated on one side of the sealing block 21.
[0026] Specifically, the first waveguide 1 and the second waveguide 2 are connected to each other, and microwave and radio frequency signals can be transmitted inside them. The size and dimensions of the sealing block 21 correspond to the size and dimensions of the sealing groove 13, so the sealing block 21 can be inserted into the sealing groove 13. When the sealing block 21 is inserted into the sealing groove 13, the inner wall of the sealing block 21 can abut against the inner wall of the sealing groove 13, thus increasing the sealing performance of the connection between the first waveguide 1 and the second waveguide 2. When the sealing block 21 is inserted into the sealing groove 13, it can compress the composite sealing ring 15 inward. The composite sealing ring 15 used in this device... Made of composite rubber, it has good wear resistance and aging resistance, ensuring the service life of the sealing of the first waveguide 1 and the second waveguide 2. One side of the sealing block 21 is coated with hot melt adhesive 17. When the sealing block 21 is inserted into the sealing groove 13, the hot melt adhesive can come into contact with the composite sealing ring 15. When the waveguide flows inside the pipe, the temperature inside the pipe will rise, so the hot melt adhesive can melt. The melted hot melt adhesive will stick to the composite sealing ring 15 and fill the small gap between the sealing block 21 and the sealing groove 13 again, thereby further enhancing the sealing of the pipe connection.
[0027] Reference Figure 1 , Figure 2 and Figure 5 The constant pressure assembly includes a connecting block 8 and a tension spring 9. The connecting block 8 is located on the opposite side of the fixing block 7. The two ends of the tension spring 9 are fixedly installed between the two connecting blocks 8. A mounting block 18 is fixedly connected to one side of the connecting block 8. A third screw hole 19 is opened on the surface of the mounting block 18. A mounting groove 10 is opened inside the fixing block 7, and the mounting block 18 is placed inside the mounting groove 10. A first screw hole 11 is opened on the top surface of the fixing block 7, and the first screw hole 11 passes through the interior of the mounting groove 10. A fixing bolt 20 is provided on the top surface of the fixing block 7, and the bottom end of the fixing bolt 20 extends into the interior of the third screw hole 19.
[0028] Specifically, during use, the mounting block 18 can be inserted into the mounting groove 10, so that the position of the first screw hole 11 is aligned with the third screw hole 19. Then, the fixing bolt 20 can be extended into the first screw hole 11 and the third screw hole 19 in sequence, thereby fixing the mounting block 18 inside the mounting groove 10. At this time, the tension spring 9 can be placed between the two connecting blocks 8, and also between the first waveguide 1 and the second waveguide 2. When the first waveguide 1 and the second waveguide 2 are subjected to vibration, the tension spring 9 can always compensate for the pressure of the first waveguide 1 and the second waveguide 2 being squeezed together, thereby ensuring the stability of the connection between the first waveguide 1 and the second waveguide 2 and preventing the pipe from loosening.
[0029] Reference Figure 1 , Figure 2 and Figure 3A first fixing ring 3 is fixedly sleeved on the outer surface of the first waveguide 1, and a second fixing ring 4 is fixedly sleeved on the outer surface of the second waveguide 2. A second screw hole 12 is opened through the surface of the first fixing ring 3 and the second fixing ring 4. A screw 5 is inserted between the second screw hole 12, and a nut 6 is installed at the end of the screw 5.
[0030] Specifically, when the waveguide and the second waveguide 2 are connected, the second screw holes 12 on the surfaces of the first fixing ring 3 and the second fixing ring 4 can be connected. At this time, the screw 5 can be inserted into the corresponding second screw holes 12 in sequence and fixed with the nut 6. In this way, the first waveguide 1 and the second waveguide 2 can be fixed, which further increases the stability when the first waveguide 1 and the second waveguide 2 are connected.
[0031] Reference Figure 2 , Figure 3 and Figure 4 The magnetohydrodynamic damping ring includes a damping ring body 14. Two damping ring bodies 14 are fixedly installed on the inner walls of the first waveguide 1 and the second waveguide 2. The interior of the two damping ring bodies 14 is provided with magnetohydrodynamic fluid 16.
[0032] Specifically, two damping rings 14 are set between the joint of the first waveguide 1 and the second waveguide 2. When microwaves pass through the inside of the pipe, the magnetohydrodynamic fluid 16 inside the damping ring 14 will change its rheological properties. When the microwave flow velocity is too fast and a large magnetic field is generated, the magnetohydrodynamic fluid 16 will increase sharply with the increase of the magnetic field strength through yield stress, thereby generating a huge damping force. This prevents the microwave flow velocity from being too fast at the position between the first waveguide 1 and the second waveguide 2, which would cause vibration and affect the sealing of the joint between the first waveguide 1 and the second waveguide 2.
[0033] Working principle: When using this device, the sealing block 21 can be inserted into the interior of the sealing groove 13, and the sealing block 21 abuts against the composite sealing ring 15. When the surfaces of the first waveguide 1 and the second waveguide 2 are tightly attached, the screw 5 can be passed through the second screw hole 12 on the surface of the first fixing ring 3 and the second fixing ring 4 in sequence to fix the position of the first waveguide 1 and the second waveguide 2 and prevent them from falling off.
[0034] Insert the mounting block 18 into the mounting groove 10 and fix it with the fixing bolt 20 to complete the installation of the tension spring 9. The tension spring 9 can compensate for the pressure of the first waveguide 1 and the second waveguide 2 pulling together, and prevent the first waveguide 1 and the second waveguide 2 from loosening due to vibration.
[0035] When microwaves flow inside the pipe, if the microwave flow rate is too fast, its magnetic field strength will increase. At this time, the magnetofluid 16 inside the damping ring 14 will increase the damping force on the microwave flow, thereby limiting the microwave flow rate through the joint of the first waveguide 1 and the second waveguide 2. This prevents the microwave flow rate from being too fast, which would cause the joint of the first waveguide 1 and the second waveguide 2 to vibrate violently and affect the sealing of the pipe. When this device is in use, it not only increases the sealing of the joint of the first waveguide 1 and the second waveguide 2, but also extends the service life of the pipe.
[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A composite waveguide constant pressure sealing assembly, comprising a first waveguide (1) and a second waveguide (2), characterized in that: The first waveguide (1) and the second waveguide (2) are tightly fitted on one side. A sealing groove (13) is provided on one side of the first waveguide (1). A sealing block (21) is fixedly connected to one side of the second waveguide (2). The sealing block (21) is inserted into the interior of the sealing groove (13). A composite sealing ring (15) is provided inside the sealing groove (13). The sealing block (21) abuts against the composite sealing ring (15) and presses the composite sealing ring (15) inward. Fixing blocks (7) are fixedly connected to both sides of the first waveguide (1) and the second waveguide (2). A constant pressure component is provided between the two fixing blocks (7). A hot melt adhesive coating (17) is applied to one side of the sealing block (21).
2. The composite waveguide constant pressure sealing assembly according to claim 1, characterized in that: The constant pressure assembly includes a connecting block (8) and a tension spring (9). The connecting block (8) is located on the opposite side of the fixed block (7), and the two ends of the tension spring (9) are fixedly installed between the two connecting blocks (8).
3. The composite waveguide constant pressure sealing assembly according to claim 2, characterized in that: A mounting block (18) is fixedly connected to one side of the connecting block (8), and a third screw hole (19) is provided on the surface of the mounting block (18).
4. The composite waveguide constant pressure sealing assembly according to claim 3, characterized in that: The fixing block (7) has an installation groove (10) inside, and the mounting block (18) is placed inside the installation groove (10). The top surface of the fixing block (7) has a first screw hole (11) that passes through the interior of the installation groove (10).
5. The composite waveguide constant-pressure sealing assembly according to claim 3, characterized in that: The top surface of the fixing block (7) is provided with a fixing bolt (20), and the bottom end of the fixing bolt (20) extends into the interior of the third screw hole (19).
6. The composite waveguide constant-pressure sealing assembly according to claim 1, characterized in that: A first fixing ring (3) is fixedly sleeved on the outer surface of the first waveguide (1), and a second fixing ring (4) is fixedly sleeved on the outer surface of the second waveguide (2). A second screw hole (12) is opened through the surfaces of the first fixing ring (3) and the second fixing ring (4).
7. The composite waveguide constant-pressure sealing assembly according to claim 6, characterized in that: A screw (5) is inserted between the second screw holes (12), and a nut (6) is installed at the end of the screw (5).
8. A magnetohydrodynamic damping ring, characterized in that: The composite waveguide constant pressure sealing assembly according to claims 1-7 further includes a damping ring (14), two of the damping rings (14) are fixedly installed on the inner walls of the first waveguide (1) and the second waveguide (2), and the interior of the two damping rings (14) is provided with magnetofluid (16).