A nuclear island air supply and exhaust duct connection structure with a sealing groove

Abstract

This utility model discloses a connection structure for a nuclear island air supply and exhaust duct with sealing grooves, specifically relating to the field of fan blades. It includes an air supply and exhaust pipe body, a fixing plate fixedly connected to the outer side of the air supply and exhaust pipe body, and multiple sealing rings fixedly connected to the left side of the fixing plate. The outermost sealing ring has multiple first fixing holes. A docking plate is fixedly connected to the outer side of the air supply and exhaust pipe body, and multiple annular sealing grooves are formed on the right side of the docking plate. This utility model inserts multiple sealing rings from the first air supply and exhaust pipe body into multiple annular sealing grooves on the second air supply and exhaust pipe body. During this process, the threaded end of the first air supply and exhaust pipe body is screwed into the second air supply and exhaust pipe body. When air leaks from the connection point of the two air supply and exhaust pipe bodies, the sealing structure formed by the multiple sealing rings embedded in the multiple annular sealing grooves can effectively block the leaking air through multiple layers, thereby preventing air leakage and achieving the function of preventing air leakage.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine blade technology, and more specifically, to a connection structure for the supply and exhaust air ducts of a nuclear island with a sealing groove. Background Technology

[0002] The nuclear island (NI) is the core area of ​​a nuclear power plant, referring to all systems and equipment directly related to the nuclear reactor within the containment. Its core function is to generate heat through nuclear fission reactions and use the primary coolant to transfer the heat to the steam generator, ultimately driving the turbine generator to generate electricity. The ventilation system of the nuclear island plays a crucial role in the nuclear power plant by optimizing seasonal ventilation modes such as summer cooling and winter insulation.

[0003] Common nuclear island ventilation duct connection structures can only connect two ventilation ducts together, but lack the function of preventing air leakage. In actual operation, some air will blow out from the gap at the connection point of the two ventilation ducts. The leakage will disperse the airflow, resulting in a reduction in the ventilation effect of the target area. Moreover, the leakage needs to be compensated by increasing the power of the fan. Long-term operation will increase energy consumption and affect the control of the internal environment of the nuclear island.

[0004] In summary, in order to reduce energy consumption and improve the precision of environmental control within the nuclear island, it is necessary to address the issue of air leakage at the connection point of the two exhaust ducts, ensuring that no air escapes from the gap between the two exhaust ducts and that airflow only moves within the exhaust ducts. Utility Model Content

[0005] The present invention provides a nuclear island air supply and exhaust duct connection structure with a sealing groove. The problem to be solved is that some air will blow out from the gap at the connection of two exhaust ducts. The air leakage will disperse the airflow and needs to be compensated by increasing the power of the fan.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nuclear island air supply and exhaust duct connection structure with a sealing groove, comprising an air supply and exhaust pipe body, a fixing plate fixedly connected to the outer side of the air supply and exhaust pipe body, multiple sealing rings fixedly connected to the left side of the fixing plate, multiple first fixing holes opened on the outermost sealing ring, a docking plate fixedly connected to the outer side of the air supply and exhaust pipe body, multiple annular sealing grooves opened on the right side of the docking plate, multiple second fixing holes opened on the outer side of the docking plate, external threads provided on the outer side of the air supply and exhaust pipe body, internal thread grooves provided on the inner side of the air supply and exhaust pipe body, an air-blocking mechanism provided on the air supply and exhaust pipe body, the air-blocking mechanism being used to reduce the wind speed inside the air supply and exhaust pipe body, and a locking mechanism provided on the air supply and exhaust pipe body, the locking mechanism being used to lock the position of the air-blocking mechanism.

[0007] In a preferred embodiment, the wind-blocking mechanism includes a turntable assembly and an adjustment assembly. The turntable assembly is used to reduce the wind speed inside the supply and exhaust pipe body, and the adjustment assembly is used to control the rotational movement of the turntable assembly.

[0008] In a preferred embodiment, the turntable assembly includes a drive rod rotatably connected inside the feed pipe body, a baffle plate fixedly connected to the outside of the drive rod, and a sealing ring fixedly connected to the outside of the baffle plate.

[0009] In a preferred embodiment, the adjustment assembly includes a drive disc fixedly connected to the outside of the drive rod, a handle fixedly connected to the outside of the drive disc, and an arc-shaped groove formed on the right side of the drive disc.

[0010] In a preferred embodiment, the locking mechanism includes a fixed clamping assembly and a movable clamping assembly, which are used to cooperate in clamping the drive disk.

[0011] In a preferred embodiment, the clamping assembly includes a fixing frame fixedly connected to the outside of the feed pipe body and a fixing clamp plate fixedly connected to the outside of the fixing frame.

[0012] In a preferred embodiment, the movable clamp assembly includes a bolt threaded inside the fixed clamp and a movable clamp fixedly connected to the outside of the bolt.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention achieves efficient sealing through multiple sealing rings and annular sealing grooves, effectively preventing air leakage from the connection point. This avoids the problem of reduced ventilation caused by airflow dispersion, reduces the additional energy consumption caused by increasing fan power due to air leakage compensation, ensures the stability of the internal environment control of the nuclear island, and improves the reliability and energy efficiency of the overall system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0017] Figure 3 This is a schematic cross-sectional view of the main body of the feed pipe of this utility model.

[0018] Figure 4 This is a schematic diagram of the sealing ring structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the docking plate structure of this utility model.

[0020] Figure 6This is a schematic diagram of the wind-blocking mechanism of this utility model.

[0021] Figure 7 This is a schematic diagram of the locking mechanism of this utility model.

[0022] The attached figures are labeled as follows: 1. Supply and exhaust pipe body; 11. Fixing plate; 12. Sealing ring; 13. First fixing hole; 14. Connecting plate; 15. Annular sealing groove; 16. Second fixing hole; 17. External thread; 18. Internal thread groove; 211. Drive rod; 212. Air baffle plate; 213. Sealing ring; 221. Drive plate; 222. Handle; 223. Arc groove; 311. Fixing frame; 312. Fixing clamp; 321. Bolt; 322. Movable clamp. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Refer to the instruction manual appendix Figures 1 to 7 A nuclear island air supply and exhaust duct connection structure with a sealing groove includes an air supply and exhaust pipe body 1. A fixing plate 11 is fixedly connected to the outer side of the air supply and exhaust pipe body 1. Multiple sealing rings 12 are fixedly connected to the left side of the fixing plate 11. Multiple first fixing holes 13 are opened on the outermost sealing ring 12. A docking plate 14 is fixedly connected to the outer side of the air supply and exhaust pipe body 1. Multiple annular sealing grooves 15 are opened on the right side of the docking plate 14. Multiple second fixing holes 16 are opened on the outer side of the docking plate 14. External threads 17 are provided on the outer side of the air supply and exhaust pipe body 1. Internal threads 18 are provided on the inner side of the air supply and exhaust pipe body 1. An air-blocking mechanism is provided on the air supply and exhaust pipe body 1 to reduce the wind speed inside the air supply and exhaust pipe body 1. A locking mechanism is provided on the air supply and exhaust pipe body 1 to lock the position of the air-blocking mechanism.

[0025] It should be noted that the multiple sealing rings 12 are of different sizes, and the dimensions of the multiple annular sealing grooves 15 are determined based on the multiple sealing rings 12 of different sizes.

[0026] Refer to the instruction manual appendix Figures 1 to 7 The wind-blocking mechanism includes a turntable assembly and an adjustment assembly. The turntable assembly is used to reduce the wind speed inside the supply and exhaust pipe body 1, and the adjustment assembly is used to control the rotational movement of the turntable assembly.

[0027] It should be noted that when the baffle plate 212 is in a vertical position, the sealing ring 213 is completely in contact with the inner wall of the supply and exhaust pipe body 1, which prevents air from flowing inside the supply and exhaust pipe body 1.

[0028] Refer to the instruction manual appendix Figure 6 The turntable assembly includes a drive rod 211 rotatably connected inside the feed pipe body 1, a baffle plate 212 fixedly connected to the outside of the drive rod 211, and a sealing ring 213 fixedly connected to the outside of the baffle plate 212.

[0029] It should be noted that when the baffle plate 212 is in a horizontal state, the air inside the supply and exhaust pipe body 1 will not be blocked. However, when the angle of the baffle plate 212 changes, it will block the flowing air, thereby slowing down the supply and exhaust speed.

[0030] Refer to the instruction manual appendix Figure 6 The adjustment assembly includes a drive disc 221 fixedly connected to the outside of the drive rod 211, a handle 222 fixedly connected to the outside of the drive disc 221, and an arc-shaped groove 223 opened on the right side of the drive disc 221.

[0031] It should be noted that the drive disc 221 is rotated by pushing and pulling the handle 222, and the drive disc 221 drives the wind baffle disc 212 to rotate via the drive rod 211.

[0032] Refer to the instruction manual appendix Figures 1 to 7 The locking mechanism includes a fixed clamping assembly and a movable clamping assembly, which are used to clamp the drive disk 221.

[0033] It should be noted that bolt 321 is located inside the arc groove 223, fixed clamp 312 is located behind drive plate 221, and movable clamp 322 is located in front of drive plate 221.

[0034] Refer to the instruction manual appendix Figures 6 to 7 The clamping assembly includes a fixing frame 311 fixedly connected to the outside of the feed pipe body 1 and a fixing clamp 312 fixedly connected to the outside of the fixing frame 311.

[0035] It should be noted that by rotating the bolt 321 in the forward direction, the movable clamping plate 322 is moved towards the fixed clamping plate 312 until the movable clamping plate 322 cooperates with the fixed clamping plate 312 to clamp the drive plate 221, thereby locking the position of the wind-blocking plate 212.

[0036] Refer to the instruction manual appendix Figures 6 to 7 The movable clamp assembly includes a bolt 321 threadedly connected inside the fixed clamp 312 and a movable clamp 322 fixedly connected to the outside of the bolt 321.

[0037] It should be noted that by rotating the bolt 321 in the opposite direction, the movable clamping plate 322 is moved away from the fixed clamping plate 312 until the movable clamping plate 322 is away from the fixed clamping plate 312, thereby releasing the clamping of the drive plate 221, so that the drive plate 221 can rotate freely.

[0038] Working principle: First, multiple sealing rings 12 on the first supply and exhaust pipe body 1 are embedded into multiple annular sealing grooves 15 on the second supply and exhaust pipe body 1. During this embedding process, the end of the first supply and exhaust pipe body 1 with external threads 17 is simultaneously screwed into the interior of the second supply and exhaust pipe body 1. Finally, an external screw is used to pass through the second fixing hole 16 on the second supply and exhaust pipe body 1 and then screwed into the first fixing hole 13 on the first supply and exhaust pipe body 1 to achieve a fixed connection between the two. Once air leaks from the connection point of the two supply and exhaust pipe bodies 1, the sealing structure formed by the multiple sealing rings 12 embedded in the multiple annular sealing grooves 15 can block the leaking air in multiple layers, thereby effectively preventing air from leaking out. When it is necessary to adjust the speed of air supply or exhaust, the bolt 321 is rotated in the opposite direction. The movable clamp 322 is moved away from the fixed clamp 312 until it disengages from the fixed clamp 312, thereby releasing the clamping and fixing of the drive disc 221. The drive disc 221 can then rotate freely. By pushing and pulling the handle 222, the drive disc 221 is driven to rotate, which in turn drives the baffle disc 212 to rotate together via the drive rod 211. After the angle of the baffle disc 212 changes, it will block the airflow, thereby reducing the air supply or exhaust speed. After the adjustment is completed, the bolt 321 needs to be turned forward to drive the movable clamp 322 to move towards the fixed clamp 312 until the movable clamp 322 and the fixed clamp 312 cooperate to clamp and fix the drive disc 221 again, thereby locking the adjusted position of the baffle disc 212.

[0039] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A connection structure for supply and exhaust air ducts in a nuclear island with a sealing groove, characterized in that: The device includes a delivery pipe body (1), a fixing plate (11) is fixedly connected to the outside of the delivery pipe body (1), a plurality of sealing rings (12) are fixedly connected to the left side of the fixing plate (11), a plurality of first fixing holes (13) are opened on the outermost sealing ring (12), a docking plate (14) is fixedly connected to the outside of the delivery pipe body (1), a plurality of annular sealing grooves (15) are opened on the right side of the docking plate (14), a plurality of second fixing holes (16) are opened on the outside of the docking plate (14), an external thread (17) is provided on the outside of the delivery pipe body (1), an internal thread groove (18) is provided on the inside of the delivery pipe body (1), a wind-blocking mechanism is provided on the delivery pipe body (1), the wind-blocking mechanism is used to slow down the wind speed in the delivery pipe body (1), and a locking mechanism is provided on the delivery pipe body (1), the locking mechanism is used to lock the position of the wind-blocking mechanism.

2. The nuclear island air supply and exhaust duct connection structure with sealing groove according to claim 1, characterized in that: The wind-blocking mechanism includes a turntable assembly and an adjustment assembly. The turntable assembly is used to reduce the wind speed inside the supply and exhaust pipe body (1), and the adjustment assembly is used to control the rotational movement of the turntable assembly.

3. The nuclear island air supply and exhaust duct connection structure with sealing groove according to claim 2, characterized in that: The turntable assembly includes a drive rod (211) rotatably connected inside the feed pipe body (1), a baffle plate (212) fixedly connected to the outside of the drive rod (211), and a sealing ring (213) fixedly connected to the outside of the baffle plate (212).

4. The nuclear island air supply and exhaust duct connection structure with sealing groove according to claim 3, characterized in that: The adjustment assembly includes a drive disc (221) fixedly connected to the outside of the drive rod (211), a handle (222) fixedly connected to the outside of the drive disc (221), and an arc-shaped groove (223) opened on the right side of the drive disc (221).

5. The nuclear island air supply and exhaust duct connection structure with sealing groove according to claim 4, characterized in that: The locking mechanism includes a fixed clamping assembly and a movable clamping assembly, which are used to clamp the drive disk (221) in cooperation.

6. The nuclear island air supply and exhaust duct connection structure with sealing groove according to claim 5, characterized in that: The clamping assembly includes a fixed frame (311) fixedly connected to the outside of the feed pipe body (1) and a fixed clamping plate (312) fixedly connected to the outside of the fixed frame (311).

7. The nuclear island air supply and exhaust duct connection structure with sealing groove according to claim 6, characterized in that: The movable clamp assembly includes a bolt (321) threaded inside the fixed clamp (312) and a movable clamp (322) fixedly connected to the outside of the bolt (321).

Images