Cooling tower air inlet noise reduction device

Abstract

The utility model relates to a cooling tower air inlet noise reduction device which comprises an air duct and further comprises shock absorption pieces arranged on the two sides of the air duct, the shock absorption piece on the left side comprises a bearing plate, a stress plate and an energy dissipation piece, the upper portion and the lower portion of the bearing plate are sleeved with movable plates respectively, each movable plate is arranged outside the bearing plate in a sleeved mode through a sliding hole, and the energy dissipation piece is arranged on the upper portion and the lower portion of the bearing plate. The right ends of the two movable plates are jointly connected with an elastic plate with a rightward protrusion, the upper end and the lower end of the elastic plate are hinged to the two movable plates respectively, and the middle of the right side face of the elastic plate is connected with a stress plate clamped to the left portion of the peripheral wall of the air duct. The energy dissipation part comprises a round pipe and an energy dissipation plate, the round pipe is rotationally connected to the left side face of the bearing plate, the energy dissipation plate with the right side face in friction contact with the bearing plate is fixedly arranged on the round pipe in a sleeving mode, and when the two movable plates move oppositely, the round pipe is driven by the transmission assembly to drive the energy dissipation plate to rotate. The air duct solves the problem that when the air duct for noise reduction of the cooling tower is used, air flow can cause vibration of the air duct, and consequently connection between the air duct and the cooling tower is unstable.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a cooling tower air inlet noise reduction device. Background Art

[0002] Noise at the cooling tower's air inlet primarily originates from the fan's intake process. This noise is generated when air is drawn in and passes through the fan blades. This noise typically consists of aerodynamic noise and mechanical noise. To reduce noise at the cooling tower's air inlet, a fan duct is installed at the inlet. Soundproofing materials, such as sound-absorbing cotton and elastic vibration isolation pads, are used inside or outside the duct to absorb and isolate the noise.

[0003] The air duct is usually installed at the air inlet of the cooling tower using screws. However, when the airflow passes through the inside of the air duct, it will impact the surrounding wall of the air duct, causing the air duct to vibrate, which in turn leads to an unstable connection between the air duct and the cooling tower. Summary of the Invention

[0004] The utility model aims to solve the problem that when a fan duct for reducing the noise of a cooling tower is in use, the air flow causes the fan duct to vibrate, resulting in an unstable connection between the fan duct and the cooling tower. The utility model provides a cooling tower air inlet noise reduction device, which can reduce the vibration of the fan duct and improve the connection stability between the fan duct and the cooling tower.

[0005] In order to solve the above problems, the technical solution of the present utility model is:

[0006] A cooling tower air inlet noise reduction device includes an air duct and a shock-absorbing member arranged on both sides of the air duct, the shock-absorbing member on the left side includes a bearing plate, a force plate and an energy dissipation member, the upper and lower parts of the bearing plate are both sleeved with movable plates, each movable plate is sleeved on the outside of the bearing plate through a sliding hole, the right ends of the two movable plates are commonly connected to an elastic plate with a protrusion facing right, the upper and lower ends of the elastic plate are respectively hinged to the two movable plates, and the middle part of the right side of the elastic plate is connected to the force plate stuck on the left part of the circumferential wall of the air duct; the energy dissipation member includes a circular tube and an energy dissipation plate, the left side of the bearing plate is rotatably connected with a circular tube, the circular tube is located between the two movable plates, and an energy dissipation plate with friction contact with the bearing plate on the right side is fixed on the circular tube. When the two movable plates move back to back, the circular tube is driven by the transmission assembly to drive the energy dissipation plate to rotate.

[0007] Furthermore, the elastic plate on the left shock absorber is an arc-shaped plate with front and rear arc-shaped edges, the force-bearing plate is an arc-shaped plate with upper and lower arc-shaped edges, and the inner diameter of the ring where the force-bearing plate is located corresponds to the outer diameter of the wind tube.

[0008] Furthermore, a limiting rod is connected to the middle of the left side surface of the elastic plate on the left shock-absorbing component, and the free end of the limiting rod passes through the supporting plate and slides into the circular tube.

[0009] Furthermore, the transmission assembly on the shock absorber on the left side includes a gear, rack 1 and rack 2. The outer wall of the circular tube is connected to a gear via a one-way bearing. The rear end of the gear is engaged with rack 1, and the upper end is connected to the upper movable plate. The front end of the gear is engaged with rack 2, and the lower end is connected to the lower movable plate.

[0010] Furthermore, when the elastic plate on the shock absorber on the left is in a natural state, there is a distance between the two movable plates and the gear; when the two movable plates move away from each other and rack 1 and rack 2 engage with the gear to rotate, the outer ring and inner ring of the one-way bearing are in a locked state.

[0011] Furthermore, a friction pattern 1 is provided on the right side of the energy dissipation plate on the left shock absorber, and a friction pattern 2 is provided on the middle portion of the left side of the supporting plate opposite to the right side of the energy dissipation plate, and the friction pattern 1 contacts the friction pattern 2.

[0012] Furthermore, the lower parts of the opposite sides of the supporting plates on the two shock-absorbing components are horizontally connected with connecting plates; connecting rods are connected between the front parts and the rear parts of the upper ends of the opposite surfaces of the two supporting plates, and the two connecting rods are respectively located on the front and rear sides of the wind tube.

[0013] Through the above technical solution, the beneficial effects of the utility model are:

[0014] When the air flow passes through the wind duct and causes the wind duct to vibrate, the elastic plates on the two shock-absorbing parts will consume a part of the vibration energy, and the energy dissipation parts on the two shock-absorbing parts will consume a part of the vibration energy, thereby reducing the vibration amplitude of the wind duct and improving the connection stability of the wind duct and the cooling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the left shock-absorbing assembly of the utility model;

[0017] Figure 3 It is a sectional front view of the left shock absorbing assembly of the present utility model;

[0018] Figure 4 It is a structural schematic diagram of the connection between a circular tube, a gear and an energy dissipation plate of the utility model.

[0019] The numbers in the attached figure are: 1, air duct, 2, load-bearing plate, 3, force-bearing plate, 4, movable plate, 5, sliding hole, 6, elastic plate, 7, round tube, 8, energy dissipation plate, 9, connecting bearing, 10, limit rod, 11, gear, 12, rack 1, 13, rack 2, 14, one-way bearing, 15, friction pattern 1, 16, friction pattern 2, 17, connecting plate, 18, connecting rod. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figures 1 to 4 As shown, a cooling tower air inlet noise reduction device includes a wind tube 1, the cross-section of the wind tube 1 is circular, and also includes shock absorbers arranged on both sides of the wind tube 1, the two shock absorbers are symmetrical, and the shock absorber on the left side includes a bearing plate 2, a force plate 3 and an energy dissipation member, the bearing plate 2 is a vertically arranged rectangular plate, and the upper and lower parts of the bearing plate 2 are both covered with movable plates 4, the movable plates 4 are rectangular plates, each movable plate 4 is covered on the outside of the bearing plate 2 through a sliding hole 5, and the sliding hole 5 is a rectangular hole in sliding contact with the bearing plate 2. The two movable plates 4 are commonly connected to an elastic plate 6 with a rightward protrusion. The upper and lower ends of the elastic plate 6 are respectively hinged to the two movable plates 4. The middle of the right side of the elastic plate 6 is connected to the force-bearing plate 3 stuck on the left side of the peripheral wall of the wind tube 1. The energy dissipation component includes a circular tube 7 and an energy dissipation plate 8. The circular tube 7 is rotatably connected to the left side of the supporting plate 2 via a connecting bearing 9. The circular tube 7 is located between the two movable plates 4. The energy dissipation plate 8 with its right side in friction contact with the supporting plate 2 is fixed on the circular tube 7. When the two movable plates 4 move away from each other, the circular tube 7 is driven by the transmission assembly to drive the energy dissipation plate 8 to rotate.

[0022] The elastic plate 6 on the left shock absorber is an arc-shaped plate with arc-shaped front and rear edges, and the force-bearing plate 3 is an arc-shaped plate with arc-shaped upper and lower edges. The inner diameter of the ring where the force-bearing plate 3 is located corresponds to the outer diameter of the wind tube 1.

[0023] A limiting rod 10 is connected to the middle of the left side of the elastic plate 6 on the left shock absorber. The free end of the limiting rod 10 passes through the supporting plate 2 and slides into the circular tube 7. The limiting rod 10 is a round rod with a diameter corresponding to the inner diameter of the circular tube 7.

[0024] The transmission assembly on the shock absorber on the left side includes a gear 11, a rack 12 and a rack 2 13. The outer wall of the circular tube 7 is connected to the gear 11 via a one-way bearing 14. The rear end of the gear 11 is engaged with the rack 12, and the upper end is connected to the upper movable plate 4. The front end of the gear 11 is engaged with the rack 2 13, and the lower end is connected to the lower movable plate 4.

[0025] When the elastic plate 6 on the shock absorber on the left is in a natural state, there is a distance between the two movable plates 4 and the gear 11; when the two movable plates 4 move away from each other and the rack 12 and the rack 2 13 engage with the gear 11 to rotate, the outer ring and the inner ring of the one-way bearing 14 are in a locked state, and the round tube rotates with the gear 11; when the two movable plates 4 move relative to each other and the rack 12 and the rack 2 13 engage with the gear 11 to rotate, the outer ring and the inner ring of the one-way bearing 14 are in a free state.

[0026] A friction pattern 15 is provided on the right side of the energy dissipation plate 8 on the left shock absorber. A friction pattern 2 16 is provided on the middle portion of the left side of the supporting plate 2 opposite to the right side of the energy dissipation plate 8 . The friction pattern 1 15 contacts the friction pattern 2 16 .

[0027] The lower parts of the back surfaces of the two supporting plates 2 on the shock-absorbing parts are horizontally connected with connecting plates 17; the front and rear parts of the upper ends of the two supporting plates 2 are connected with connecting rods 18, and the two connecting rods 18 are respectively located on the front and rear sides of the wind tube 1.

[0028] When in use, the air duct 1 is connected to the air inlet of the cooling tower, and the connecting plates 17 on the two shock-absorbing members are fixedly connected to the cooling tower; when the air flow enters the cooling tower through the air duct 1, the vibration caused by the air flow hitting the wall of the air duct 1 causes the force-bearing plate 3 on the left shock-absorbing member to vibrate and move to the left, and the force-bearing plate 3 drives the elastic plate 6 to deform, that is, the two ends of the elastic plate 6 drive the two movable plates 4 to move in opposite directions, so the vibration energy will be converted into potential energy of the elastic plate 6, thereby absorbing part of the vibration energy of the air duct 1, and in the process of the two movable plates 4 moving in opposite directions, the rack 1 12 moves upward and the rack 2 13 moves downward, thereby driving the gear 11 through the one-way bearing 14 The circular tube 7 is driven to rotate, and the energy dissipation plate 8 rotates with the circular tube 7. The friction pattern 1 15 on the energy dissipation plate 8 rubs against the friction pattern 2 16 on the bearing plate 2, thereby converting the vibration energy of the wind duct 1 into internal energy generated by the friction between the friction pattern 1 15 and the friction pattern 2 16, further reducing the vibration energy of the wind duct 1, and thus reducing the vibration amplitude of the wind duct 1; similarly, after the wind duct 1 gives vibration energy to the force-bearing plate 3 on the right shock-absorbing component, the elastic plate 6 on the right shock-absorbing component consumes part of the vibration energy, and the energy dissipation component on the right shock-absorbing component consumes part of the vibration energy, which can also reduce the vibration amplitude of the wind duct 1, thereby improving the connection stability of the wind duct 1 and the cooling tower.

[0029] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Without violating the spirit of the present invention, that is, within the scope of disclosure, any equivalent or equivalent deformation or replacement of the technical solution of the utility model shall fall within the scope of protection of the present invention.

Claims

1. A cooling tower air inlet noise reduction device, comprising a wind tube (1), characterized in that: The invention also includes shock-absorbing parts arranged on both sides of the wind tube (1), and the shock-absorbing part on the left side includes a bearing plate (2), a force plate (3) and an energy dissipation part. The upper and lower parts of the bearing plate (2) are both covered with movable plates (4), and each movable plate (4) is covered on the outside of the bearing plate (2) through a sliding hole (5). The right ends of the two movable plates (4) are commonly connected with an elastic plate (6) with a protrusion facing right. The upper and lower ends of the elastic plate (6) are respectively hinged to the two movable plates (4). The middle part of the right side of the elastic plate (6) is connected with the force plate (3) stuck on the left side of the peripheral wall of the wind tube (1); the energy dissipation part includes a circular tube (7) and an energy dissipation plate (8). The left side of the bearing plate (2) is rotatably connected with the circular tube (7), and the circular tube (7) is located between the two movable plates (4). The circular tube (7) is fixed with an energy dissipation plate (8) whose right side frictionally contacts the bearing plate (2). When the two movable plates (4) move back to back, the circular tube (7) is driven by the transmission component to drive the energy dissipation plate (8) to rotate.

2. A cooling tower air inlet noise reduction device according to claim 1, characterized in that: The elastic plate (6) on the shock-absorbing member on the left side is an arc-shaped plate with arc-shaped front and rear edges, and the force-bearing plate (3) is an arc-shaped plate with arc-shaped upper and lower edges. The inner diameter of the ring where the force-bearing plate (3) is located corresponds to the outer diameter of the wind tube (1).

3. A cooling tower air inlet noise reduction device according to claim 2, characterized in that: The middle portion of the left side of the elastic plate (6) on the left shock-absorbing member is connected to a limiting rod (10), and the free end of the limiting rod (10) penetrates the bearing plate (2) and slides into the circular tube (7).

4. A cooling tower air inlet noise reduction device according to claim 3, characterized in that: The transmission assembly on the shock-absorbing member on the left side includes a gear (11), a rack 1 (12) and a rack 2 (13). The outer wall of the circular tube (7) is connected to the gear (11) via a one-way bearing (14). The rear end of the gear (11) is engaged with the rack 1 (12) whose upper end is connected to the upper movable plate (4). The front end of the gear (11) is engaged with the rack 2 (13) whose lower end is connected to the lower movable plate (4).

5. A cooling tower air inlet noise reduction device according to claim 4, characterized in that: When the elastic plate (6) on the shock absorber on the left side is in a natural state, there is a gap between the two movable plates (4) and the gear (11); when the two movable plates (4) move in opposite directions and the rack 1 (12) and the rack 2 (13) engage with the gear (11) to rotate, the outer ring and the inner ring of the one-way bearing (14) are in a locked state.

6. The cooling tower air inlet noise reduction device according to claim 1, characterized in that: The energy dissipation plate (8) on the left side of the shock absorber is provided with a friction pattern 1 (15) on the right side, and the bearing plate (2) opposite to the right side of the energy dissipation plate (8) is provided with a friction pattern 2 (16) in the middle of the left side, and the friction pattern 1 (15) contacts the friction pattern 2 (16).

7. The cooling tower air inlet noise reduction device according to claim 1, characterized in that: The lower parts of the opposite sides of the supporting plates (2) on the two shock-absorbing members are horizontally connected to a connecting plate (17); connecting rods (18) are connected between the front parts and the rear parts of the upper ends of the opposite surfaces of the two supporting plates (2), and the two connecting rods (18) are respectively located at the front and rear sides of the air duct (1).

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