Ventilation device of nuclear power fan

Abstract

The utility model discloses a nuclear power fan ventilation device which comprises a frame and a plurality of supporting rods rotatably installed in the frame, the supporting rods are arranged from top to bottom, each supporting rod is provided with a plurality of through ventilation holes, and the ventilation holes are formed in the axial direction of the supporting rods at intervals. The inner diameter of each ventilation hole is gradually reduced from the first end to the second end, and a traditional grid type ventilation opening is changed from a two-dimensional plane model to a three-dimensional reducing spray pipe design. After the design is changed, the air outlet speed can be greatly increased, the air outlet temperature is reduced due to the effect of the reducing spray pipe, energy consumption is reduced, and the purpose of cost control is achieved; the frame is further provided with a driving mechanism which is connected with the supporting rod to drive the supporting rod to rotate so that the rotating direction of the supporting rod can be adjusted conveniently, and then the air outlet angle can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power, in particular to a ventilation device for a nuclear power fan. Background Art

[0002] As Figure 1 shown, during the operation of the Hualong One nuclear power unit, the ventilation condition of the air compressor building directly affects the temperature control of the air compressor site. At present, the traditional grid-type air outlet is adopted for the nuclear power plant fan, and its air outlet effect is relatively general, and the air outlet angle is not adjustable. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a ventilation device for a nuclear power fan.

[0004] The technical solution adopted by the utility model to solve its technical problem is: to construct a ventilation device for a nuclear power fan, which includes a frame and a plurality of support rods rotatably installed in the frame. The plurality of support rods are arranged from top to bottom, and each support rod is provided with a plurality of through ventilation holes. The plurality of ventilation holes are arranged at intervals along the axial direction of the support rod, and the inner diameter of each ventilation hole gradually decreases from the first end to the second end;

[0005] A driving mechanism is further provided on the frame and is connected to the support rod to drive the support rod to rotate.

[0006] In some embodiments, connecting shafts are respectively connected to both axial ends of each support rod, a synchronous pulley is installed on each connecting shaft, and a synchronous belt is wound around all the synchronous pulleys on the same side; the driving mechanism includes a plurality of driving motors, and at least one synchronous pulley on the same side is connected to one of the driving motors.

[0007] In some embodiments, the driving motor and the synchronous pulley are detachably connected.

[0008] In some embodiments, a flange is provided on the driving shaft of the driving motor, and a connecting seat is provided on the end face of the flange;

[0009] The driving mechanism further includes a moving sleeve, a magnetic yoke, an electromagnetic coil, a magnetic attracting member, and an elastic member. The moving sleeve is fixedly arranged on the outer periphery of the connecting shaft, and the magnetic yoke is arranged on a part of the outer periphery of the moving sleeve, and the electromagnetic coil is arranged in the magnetic yoke;

[0010] The elastic members are respectively connected to one side of the magnetic member and the connecting seat facing the synchronous pulley; when the electromagnetic coil is energized, a magnetic force is generated to adsorb and connect the moving sleeve and the magnetic member, so that the connecting shaft is connected to the driving shaft of the driving motor, and the connecting shaft rotates synchronously with the driving shaft of the driving motor; when the electromagnetic coil is not energized, the moving sleeve and the magnetic member are separated, so that the connecting shaft is separated from the driving shaft of the driving motor.

[0011] In some embodiments, the connecting seat is sleeved on a part of the outer periphery of the moving sleeve, and a first rolling bearing is provided between the inner cavity of the connecting seat and a part of the outer periphery of the moving sleeve.

[0012] In some embodiments, the moving sleeve may include a shaft sleeve, and a separating portion extends radially outward in the middle section of the shaft sleeve. The separating portion defines a first shaft portion and a second shaft portion on the shaft sleeve. The first shaft portion is arranged close to the synchronous pulley side, and the second shaft portion is arranged close to the connecting seat side;

[0013] The connecting seat is sleeved on the outer periphery of the first shaft portion; the yoke is sleeved on the outer periphery of the second shaft portion, and a second rolling bearing is provided between the inner periphery of the yoke and the outer periphery of the second shaft portion.

[0014] In some embodiments, the driving motor includes a servo motor.

[0015] In some embodiments, a displacement sensor is provided on any one of the support rods.

[0016] In some embodiments, the cross section of the support rod is circular or square.

[0017] In some embodiments, the inner cavity of the ventilation hole is conical.

[0018] Implementing the present utility model has the following beneficial effects: The nuclear power fan ventilation device includes a frame and a plurality of support rods rotatably installed in the frame. The plurality of support rods are arranged from top to bottom, and each support rod is provided with a plurality of through ventilation holes. The plurality of ventilation holes are arranged at intervals along the axial direction of the support rod. The inner diameter of each ventilation hole gradually decreases from the first end to the second end. By changing the traditional grid grille ventilation opening from a two-dimensional plane model to a three-dimensional tapered nozzle design. After the design change, the air outlet speed will be greatly increased, and the air outlet temperature will also be reduced due to the effect of the tapered nozzle, and the energy consumption will be reduced to achieve the purpose of cost control; a driving mechanism for driving the support rod to rotate is also provided on the frame to facilitate adjusting the rotation direction of the support rod, and then adjusting the air outlet angle. Description of the Drawings

[0019] To more clearly illustrate the technical solution of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:

[0020] Figure 1 is a schematic structural view of the ventilation opening of a nuclear power fan in the related art;

[0021] Figure 2 is a schematic structural view of a nuclear power fan ventilation device in some embodiments of the present utility model;

[0022] Figure 3 is a schematic structural view of a support rod in some embodiments of the present utility model;

[0023] Figure 4 is a schematic structural view of a support rod in some embodiments of the present utility model;

[0024] Figure 5 is a schematic structural view of the cooperation between a driving motor and a connecting shaft in some embodiments of the present utility model. Detailed implementation manners

[0025] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the detailed implementation manners of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are constructed and operated in a specific orientation, only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0026] It should also be noted that unless otherwise clearly specified and limited, terms such as "installation", "connection", "linkage", "fixation", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When a component is referred to as "on" or "under" another component, the component can be "directly" or "indirectly" located above the other component, or there may also be one or more intermediate components. Terms such as "first", "second", "third", etc. are only for the convenience of describing the present technical solution and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", etc. can explicitly or implicitly include one or more of the said features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are presented in order to thoroughly understand the embodiments of the present utility model. However, those skilled in the art should clearly understand that the present utility model can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present utility model.

[0028] Please refer to Figures 2 to 5 , the present utility model shows a nuclear power fan ventilation device, which is applicable to the fans of nuclear power units, especially suitable for the fans of the Hualong One unit.

[0029] The nuclear power fan ventilation device may include a frame 10 and a plurality of support rods 20 rotatably installed in the frame 10. The plurality of support rods 20 are arranged from top to bottom. Each support rod 20 is provided with a plurality of through ventilation holes 21. The plurality of ventilation holes 21 are spaced along the axial direction of the support rod 20. The inner diameter of each ventilation hole 21 gradually decreases from the first end to the second end, showing a reduced shape. Preferably, as Figure 3 and Figure 4 shown, the cross-section of the support rod 20 is circular or square, that is, the support rod 20 can be a round rod or a square rod structure, and the inner cavity of the ventilation hole 21 is conical.

[0030] Furthermore, a driving mechanism 30 is also provided on the frame 10 and connected to the support rod 20 to drive the support rod 20 to rotate, so as to facilitate adjusting the rotation direction of the support rod 20 and then adjusting the air outlet angle.

[0031] Understandably, by transforming the traditional grid grille vent from a two-dimensional planar model into a three-dimensional tapered nozzle design, the air outlet speed will be greatly increased after the design change. Also, due to the effect of the tapered nozzle, the temperature of the air outlet will be reduced, and the energy consumption will be reduced to achieve the purpose of cost control.

[0032] The frame 10 can be generally in the shape of a rectangular frame. The frame 10 can be made of a selected metal material, such as stainless steel or aluminum alloy. Since nuclear power plants are mostly built near the sea, the frame 10 can be made of stainless steel material. Preferably, the support rod 20 can also be made of stainless steel material.

[0033] As Figure 2 shown, at both axial ends of each support rod 20, a connecting shaft 40 is respectively connected. A synchronous pulley 50 is installed on each connecting shaft 40, and a synchronous belt 60 is wound around all the synchronous pulleys 50 on the same side; the driving mechanism 30 includes a number of driving motors 31, and at least one synchronous pulley 50 on the same side is connected to a driving motor 31.

[0034] Understandably, both sides of the support rod 20 can be driven to rotate by the driving motor 31. The driving motor 31 of the present application can be provided with two. One driving motor 31 is provided on one side of all the support rods 20 (such as Figure 2 the left side), and another driving motor 31 is provided on the other side of all the support rods 20 (such as Figure 2 the right side).

[0035] In some embodiments, the driving motor 31 and the synchronous pulley 50 (or rather, the connecting shaft 40) can be detachably connected.

[0036] As Figure 5 shown, in some embodiments, a flange 312 is provided on the driving shaft 311 of the driving motor 31, and a connecting seat 313 is provided on the end face of the flange 312.

[0037] The driving mechanism further includes a moving sleeve 32, a magnetic yoke 33, an electromagnetic coil 34, a magnetic attracting member 35, and an elastic member 36. The moving sleeve 32 is fixedly provided on the outer periphery of the connecting shaft 40, and the magnetic yoke 33 is provided on a part of the outer periphery of the moving sleeve 32. The electromagnetic coil 34 is provided in the magnetic yoke 33. Since the synchronous pulley 50 is provided on the connecting shaft 40, therefore, the components of the driving mechanism 30 of the present application are mainly arranged on the part of the connecting shaft 40 that protrudes from the synchronous pulley 50 and is close to the driving motor 31.

[0038] The elastic member 36 is respectively connected to the magnetic member 35 and the side of the connecting seat 313 facing the synchronous wheel 50; when the electromagnetic coil 34 is energized, a magnetic force is generated to make the movable sleeve 32 and the magnetic member 35 adsorbed and connected, so that the connecting shaft 40 is connected to the driving shaft 311 of the driving motor 31, and the connecting shaft 40 and the driving shaft 311 of the driving motor 31 rotate synchronously. When the electromagnetic coil 34 is not energized, the movable sleeve 32 and the magnetic member 35 are separated, so that the connecting shaft 40 is separated from the driving shaft 311 of the driving motor 31, and at this time, the connecting shaft 40 can rotate alone. Through the detachable structure, the support rod 20 can be rotated by being close to one driving motor 31, and the other driving motor 31 can be in a dormant state, so that the driving motors 31 can be used in a standby and a backup mode, thereby improving redundancy.

[0039] like Figure 5 As shown, the connecting seat 313 is sleeved on a portion of the outer periphery of the moving sleeve 32 , and a first rolling bearing 37 is disposed on the inner cavity of the connecting seat 313 and a portion of the outer periphery of the moving sleeve 32 .

[0040] Furthermore, the movable sleeve 32 may include a shaft sleeve 321, and a separation portion 322 extends radially outward from the middle section of the shaft sleeve 321. The separation portion 322 defines a first shaft portion and a second shaft portion of the shaft sleeve 321. The first shaft portion is arranged close to the synchronous wheel 50, and the second shaft portion is arranged close to the connecting seat 313.

[0041] The connecting seat 313 is sleeved on the outer periphery of the first shaft portion, and a first rolling bearing 37 is provided between the inner cavity of the connecting seat 313 and part of the outer periphery of the first shaft portion; the yoke 33 can be roughly cylindrical, and the yoke 33 can be sleeved on the outer periphery of the second shaft portion, and a second rolling bearing 38 is provided between the inner periphery of the yoke 33 and the outer periphery of the second shaft portion.

[0042] The yoke 33 has an annular receiving groove for receiving the electromagnetic coil 34. The receiving groove may have an opening to facilitate the installation of the electromagnetic coil 34. The opening may be sealed by the axial end surface of the isolation portion 322. The yoke 33 is also provided with a current seat, which is connected to the electromagnetic coil 34 for current input.

[0043] Preferably, the driving motor 31 comprises a servo motor, which has high precision and forward and reverse rotation functions.

[0044] Preferably, a displacement sensor is provided on any support rod 20, and the displacement sensor may include but is not limited to a micro switch or a microwave sensor, etc., which can monitor the rotation state of the support rod 20. Of course, the displacement sensor may not be provided, and no specific limitation is made here.

[0045] Understandably, the above embodiments only represent the preferred embodiments of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, the above technical features can be freely combined, and several modifications and improvements can also be made, which all fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present utility model shall fall within the scope covered by the claims of the present utility model.

Claims

1. A ventilation device for a nuclear power fan, characterized in that, It includes a frame (10) and a number of support rods (20) rotatably installed within the frame (10). The number of support rods (20) is arranged from top to bottom. Each support rod (20) is provided with a number of through ventilation holes (21). The number of ventilation holes (21) is arranged at intervals along the axial direction of the support rod (20). The inner diameter of each ventilation hole (21) gradually decreases from the first end to the second end. The frame (10) is also provided with a driving mechanism (30) connected to the support rod (20) to drive the support rod (20) to rotate.

2. The nuclear power fan ventilation device according to claim 1, wherein, Axial ends of each support rod (20) are respectively connected with a connecting shaft (40). A synchronous pulley (50) is installed on each connecting shaft (40). A synchronous belt (60) is wound around all the synchronous pulleys (50) on the same side; The driving mechanism (30) includes a number of driving motors (31). At least one synchronous pulley (50) on the same side is connected to one driving motor (31).

3. The nuclear power fan ventilation device according to claim 2, characterized in that, The driving motor (31) and the synchronous pulley (50) are detachably connected.

4. The nuclear power fan ventilation device according to claim 3, wherein, A flange (312) is provided on the driving shaft (311) of the driving motor (31). A connecting seat (313) is provided on the end face of the flange (312). The driving mechanism further includes a moving sleeve (32), a yoke (33), an electromagnetic coil (34), a magnetic attracting member (35), and an elastic member (36). The moving sleeve (32) is fixedly arranged on the outer periphery of the connecting shaft (40). The yoke (33) is arranged on a part of the outer periphery of the moving sleeve (32). The electromagnetic coil (34) is arranged within the yoke (33). The elastic member (36) is respectively connected to the magnetic attracting member (35) and one side of the connecting seat (313) facing the synchronous pulley (50); When the electromagnetic coil (34) is energized, it generates a magnetic force to adsorb and connect the moving sleeve (32) and the magnetic attracting member (35), thereby connecting the connecting shaft (40) with the driving shaft (311) of the driving motor (31). The connecting shaft (40) and the driving shaft (311) of the driving motor (31) rotate synchronously; When the electromagnetic coil (34) is not energized, the moving sleeve (32) and the magnetic attracting member (35) are separated, so that the connecting shaft (40) is separated from the driving shaft (311) of the driving motor (31).

5. The nuclear power fan ventilation device according to claim 4, characterized in that, The connecting seat (313) is sleeved on a part of the outer periphery of the moving sleeve (32). A first rolling bearing (37) is provided between the inner cavity of the connecting seat (313) and a part of the outer periphery of the moving sleeve (32).

6. The nuclear power fan ventilation device according to claim 5, characterized in that, The moving sleeve (32) may include a shaft sleeve (321). A middle section of the shaft sleeve (321) extends radially outwards to form a separating portion (322). The separating portion (322) defines a first shaft portion and a second shaft portion of the shaft sleeve (321). The first shaft portion is arranged on the side close to the synchronous pulley (50), and the second shaft portion is arranged on the side close to the connecting seat (313). The connecting seat (313) is sleeved on the outer periphery of the first shaft portion; the yoke (33) is sleeved on the outer periphery of the second shaft portion, and a second rolling bearing (38) is provided between the inner periphery of the yoke (33) and the outer periphery of the second shaft portion.

7. The nuclear power fan ventilation device according to any one of claims 2 to 6, characterized in that, The drive motor (31) includes a servo motor.

8. The nuclear power fan ventilation device according to claim 1, characterized in that, A displacement sensor is provided on any one of the support rods (20).

9. The nuclear power fan ventilation device according to claim 1, characterized in that, The cross section of the support rod (20) is circular or square.

10. The nuclear power fan ventilation device according to claim 1, characterized in that, The inner cavity of the ventilation hole (21) is conical.

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