Movable energy-saving air inlet and outlet noise elimination system

Abstract

The invention discloses a movable energy-saving air inlet and outlet noise elimination system which comprises an air inlet and outlet, a plurality of fixed noise elimination units and movable noise elimination units are arranged in the air inlet and outlet, the fixed noise elimination units are fixed in the air inlet and outlet, and the movable noise elimination units move front and back in the air direction in the air inlet and outlet along a track through a guide rail assembly. The track of the movable silencing unit comprises a noise reduction position between the fixed silencing units and an energy saving position in front of and / or behind the fixed silencing units. The noise reduction device has the beneficial effects that the noise reduction unit is arranged to be the fixed channel part and the movable channel part, the movable channel part is adjusted in real time according to the actual requirements of system operation and the difference of the noise reduction requirements of the external environment, the noise reduction requirements are met, meanwhile, energy loss caused by wind resistance can be effectively reduced, and the noise reduction effect is improved. Remarkable energy-saving benefits are achieved, and the noise reduction requirements of various different environments such as day and night changes, seasonal differences and load fluctuation of equipment needing noise reduction can be flexibly met.

Description

Technical Field

[0001] The present application belongs to the technical field of noise reduction and energy saving, and specifically relates to a movable energy-saving inlet and outlet air silencer system. Background Art

[0002] There is an existing inlet and outlet silencer, which is installed outside the equipment with noise reduction and ventilation requirements. Common types include array type, matrix type, sheet type, sine wave type or diamond type. Existing problems: The existing inlet and outlet silencer is fixedly installed. When the ventilation volume is fixed, it generates fixed wind resistance and cannot flexibly adapt to different noise reduction requirements, resulting in energy loss. Summary of the invention

[0003] The purpose of this application is to provide a movable energy-saving inlet and outlet air silencer system, which solves the problem that the existing silencer devices cannot flexibly adapt to different noise reduction requirements.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A movable energy-saving inlet and outlet air silencer system comprises an air inlet and outlet, wherein a plurality of fixed silencer units and a mobile silencer unit are arranged in the air inlet and outlet, wherein the fixed silencer unit is fixed in the air inlet and outlet, and the mobile silencer unit moves forward and backward along a trajectory in the air inlet and outlet through a guide rail assembly, wherein the trajectory of the mobile silencer unit comprises noise reduction positions between the fixed silencer units and energy-saving positions in front of and / or behind the fixed silencer units.

[0006] Furthermore, the fixed silencer units and the mobile silencer units are alternately arranged in a vertical or horizontal structure.

[0007] Furthermore, the noise reduction position of the mobile silencer unit is the front position of the track, and the energy saving position of the mobile silencer unit is the rear position of the track.

[0008] Furthermore, the mobile silencer unit moves back and forth along a straight line trajectory parallel to the wind direction.

[0009] Furthermore, the mobile silencer unit moves forward and backward along a broken line trajectory or an arc trajectory.

[0010] Furthermore, the rear position of the trajectory of the mobile silencer unit is located directly behind the fixed silencer unit.

[0011] Furthermore, the rear position of the trajectory of the mobile silencer unit is located directly behind the vertical structure.

[0012] Furthermore, the air inlet and outlet include an upper air inlet and outlet and a lower air inlet and outlet, the upper air inlet and outlet are provided with a plurality of fixed silencer units, and the lower air inlet and outlet are provided with a plurality of fixed silencer units and a movable silencer unit.

[0013] Furthermore, it also includes a vertical structure and a transverse structure, and an air inlet and outlet are formed between the vertical structure and the transverse structure.

[0014] Furthermore, the air inlet and outlet are air outlets of a ventilation cooling tower.

[0015] Furthermore, the fixed silencer unit includes a mounting straight pipe, a silencer element is connected between the mounting straight pipes, the mounting straight pipes are connected to the mounting angle steel, the mounting angle steel is connected to the connecting plate, and the connecting plate is connected to the embedded angle steel on the air inlet and outlet.

[0016] Furthermore, the mobile silencer unit includes an installation folded tube, a silencer element is connected between the installation folded tubes, the folded section of the installation folded tube is connected to a guide wheel, the guide wheel is movably arranged on a guide rail on the air inlet and outlet, the guide wheel is connected to a driver, and limit members are provided at the front and rear extreme positions of the guide rail.

[0017] The beneficial effects of the present application are as follows: by setting the silencer units (which may be array-type, matrix-type, sheet-type, sinusoidal-wave-type or diamond-type) in the inlet and outlet silencer devices as fixed channel parts and movable channel parts, the movable channel parts are adjusted in real time according to the actual needs of the system operation and the different noise reduction requirements of the external environment (this working condition is uniformly called "energy-saving working condition"), so that while meeting the noise reduction requirements, the energy loss caused by wind resistance can be effectively reduced, achieving significant energy-saving benefits, and being able to flexibly respond to the noise reduction requirements of various different environments such as day and night changes, seasonal differences, and load fluctuations of the equipment to be noise reduced.

[0018] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the scheme of the present application, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of Examples 1 and 2 of the present application.

[0020] Figure 2 It is a cross-sectional layout diagram of the fixed silencer unit of Examples 1 and 2 of the present application.

[0021] Figure 3 It is a cross-sectional layout diagram of the mobile silencer unit of Example 1 of the present application.

[0022] Figure 4 It is a cross-sectional layout diagram of the mobile silencer unit of Example 2 of the present application.

[0023] Figure 5 It is a structural diagram of Example 3 of the present application.

[0024] Figure 6 It is a cross-sectional layout diagram of the fixed silencer unit of Example 3 of the present application.

[0025] Figure 7 It is a structural diagram of Example 4 of the present application.

[0026] Figure 8 It is a cross-sectional layout diagram of the fixed silencer unit of Example 4 of the present application.

[0027] Fig. 9 It is a cross-sectional layout diagram of the mobile silencer unit of Example 4 of the present application.

[0028] Fig.10 It is a structural schematic diagram of the fixed silencer unit of the present application.

[0029] Fig.11 It is a structural schematic diagram of the mobile silencer unit of the present application.

[0030] In the figure: 1-air inlet and outlet, 2-fixed silencer unit, 3-mobile silencer unit, 4-guide rail assembly, 5-upper air inlet and outlet, 6-lower air inlet and outlet, 7-vertical structure, 8-horizontal structure, 9-ventilation cooling tower, 10-embedded angle steel, 11-connecting plate, 12-installation angle steel, 13-installation straight pipe, 14-silencer element, 15-installation folded pipe, 16-guide wheel, 17-guide rail, 18-limiting member, 19-driver. DETAILED DESCRIPTION

[0031] The following non-limiting examples are provided to illustrate the present application.

[0032] Embodiment 0

[0033] refer to Figures 1 to 11 As shown, a movable energy-saving air inlet and outlet silencer system includes an air inlet and outlet 1, a fixed silencer unit 2, a movable silencer unit 3 and a guide rail assembly 4.

[0034] The air inlet and outlet 1 is used for air intake or air outlet during ventilation. The air inlet and outlet 1 can be the air outlet of the ventilation cooling tower 9, or the air outlet of other ventilation systems that require noise reduction (natural ventilation cooling tower air inlet, subway vent). A plurality of fixed silencer units 2 and mobile silencer units 3 are arranged in the air inlet and outlet 1. The fixed silencer unit 2 is fixed in the air inlet and outlet 1 as a continuous noise reduction unit.

[0035] The mobile silencer unit 3 moves forward and backward along the trajectory in the wind in the air inlet and outlet 1 through the guide rail assembly 4. The trajectory of the mobile silencer unit 3 includes the noise reduction position between the fixed silencer units 2 and the energy-saving position in front of and / or behind the fixed silencer unit 2. When the mobile silencer unit 3 is moved to the noise reduction position between the fixed silencer units 2, the mobile silencer unit 3 performs noise reduction. At this time, the time period with high noise reduction requirements is applicable, but the wind resistance is large. When the mobile silencer unit 3 is moved to the energy-saving position in front of and / or behind the fixed silencer unit 2, the noise reduction effect of the mobile silencer unit 3 is reduced or disappears, and at the same time, the air duct area is expanded to reduce wind resistance. At this time, the time period with low noise reduction requirements is applicable, achieving the energy-saving effect of reducing electricity.

[0036] Depending on the season, day or night, or load, when there are working conditions that can reduce the amount of noise reduction, the mobile silencer unit is moved to meet the noise reduction requirements while effectively reducing the energy loss caused by wind resistance, achieving significant energy-saving benefits. The mobile silencer unit can move in the same or opposite direction as the gas inflow. After moving, the gas flow rate between the silencer plates is reduced, the channel becomes longer, the gas resistance loss is reduced, and the noise reduction effect is reduced.

[0037] When the noise reduction requirement is not high, the mobile noise reduction unit can be moved out according to the situation. Of course, the more it is moved out, the smaller the noise reduction and ventilation resistance loss. It can be moved to a suitable location according to the external noise reduction requirements. At night, when the facilities in the area that need noise reduction are running at full load and have higher noise emission limits, the mobile noise reduction unit will be moved back.

[0038] The fixed muffler unit 2 and the mobile muffler unit 3 are arranged in a vertical or horizontal structure in an alternating arrangement. The vertical structure is preferably arranged in a single horizontal direction in an alternating arrangement, which is convenient for the installation and operation of the muffler unit and has a good energy-saving effect. The vertical arrangement is convenient for upper and lower support and guidance, and the horizontal structure is preferably arranged in a single vertical direction in an alternating arrangement. Similarly, the alternating arrangement can also be arranged in other quantities.

[0039] The noise reduction position of the mobile silencer unit 3 is the front position of the track, and the energy-saving position of the mobile silencer unit 3 is the rear position of the track, that is, the front limit position of the mobile silencer unit 3 is between the fixed silencer units 2, and the rear limit position is moved backward to the rear of the fixed silencer unit 2, so as to make full use of the space inside the ventilation cooling tower 9 and avoid the air inlet from extending outward. Similarly, the noise reduction position of the mobile silencer unit 3 can also be used as the rear position of the track, and the energy-saving position of the mobile silencer unit 3 can be used as the front position of the track; the noise reduction position of the mobile silencer unit 3 can also be used as the middle position of the track, and the energy-saving position of the mobile silencer unit 3 can be used as the front position of the track and the rear position of the track.

[0040] The energy-saving position of the mobile silencer unit 3 is to move it to the front and / or rear position of the fixed silencer unit 2. The relative distance between the front and the rear includes two forms: far and near. If the mobile silencer unit 3 is moved forward and backward a shorter distance, the mobile silencer unit 3 still has the effect of reducing noise and increasing resistance. If the mobile silencer unit 3 is moved forward and backward a longer distance, the effect of reducing noise and increasing resistance of the mobile silencer unit 3 is greatly reduced. The specific distance can be flexibly adjusted according to on-site needs.

[0041] The system also includes a vertical structure 7 and a horizontal structure 8 as the main body of the building. The vertical structure 7 can be a column or a wall, and the horizontal structure 8 can be a beam or a floor slab. A plurality of air inlets and outlets 1 arranged in an array are formed between the vertical structure 7 and the horizontal structure 8.

[0042] The fixed silencer unit 2 and the mobile silencer unit 3 are in array, matrix, sheet, sinusoidal or rhombus forms.

[0043] The fixed silencer unit 2 includes a mounting straight pipe 13 and a silencer element 14, the silencer element 14 is connected between the mounting straight pipes 13, the mounting straight pipes 13 are connected to the mounting angle steel 12 by bolts, the mounting angle steel 12 is welded to the connecting plate 11, and the connecting plate 11 is welded to the embedded angle steel 10 on the transverse structure 8, thereby realizing the fixed installation of the four end corners of the fixed silencer unit 2.

[0044] The mobile muffler unit 3 includes a mounting folded tube 15 and a muffler element 14. The mounting folded tube 15 is preferably a U-shaped structure. The muffler element 14 is connected between the middle sections of the mounting folded tube 15. The folded sections of the mounting folded tube 15 are connected to a guide wheel 16. The guide wheel 16 moves on a guide rail 17 on the transverse structure 8. The mounting folded tube 15 is provided with a driver 19 (such as a motor) for driving the guide wheel 16. The driver 19 drives the guide wheel 16 to move, thereby realizing the self-moving function of the mobile muffler unit 3. The front and rear extreme positions of the guide rail 17 are welded with a limiter 18, which blocks the mobile muffler unit 3 from moving and prevents it from falling off the guide rail 17.

[0045] Example 1

[0046] refer to Figure 1 , Figure 2 and Figure 3 As shown, a movable energy-saving inlet and outlet air silencer system, the mobile silencer unit 3 moves forward and backward along a straight track parallel to the wind direction, and the mobile silencer unit 3 moves to the front position of the track, that is, the noise reduction position, to perform noise reduction. The mobile silencer unit 3 moves to the rear position of the track, that is, the energy-saving position, which is directly opposite to the rear of the left and right adjacent fixed silencer units 2, and also has a certain noise reduction effect. At the same time, the air duct is expanded to achieve resistance reduction and energy saving.

[0047] The rest is the same as in Example 0.

[0048] Take the silencer system with a total length of 3 meters and a flow ratio of 0.5 as an example: under strict operating conditions, the total pressure loss coefficient of the silencer system is 3.7; after the mobile silencer unit is removed, it is equivalent to two small silencer systems with a length of 3 meters and a flow ratio of 0.75. The total pressure loss coefficient of each small silencer system is 1.2. After removal, the total total pressure loss coefficient is 1.2×2=2.4; 1-2.4 / 3.7=35%, so energy saving is expected to be more than 35%.

[0049] Example 2

[0050] refer to Figure 1 , Figure 2 and Figure 4 As shown, a movable energy-saving inlet and outlet air silencer system, the mobile silencer unit 3 moves forward and backward along a broken line trajectory or an arc trajectory, the broken line trajectory or the arc trajectory can achieve the left and right position offset of the mobile silencer unit 3, offsetting the mobile silencer unit 3 to the rear of the fixed silencer unit 2 or the vertical structure 7, can further expand the air duct, reduce wind resistance, and improve the energy-saving effect.

[0051] In this embodiment, the rear position of the trajectory of the mobile silencer unit 3 is located directly behind the fixed silencer unit 2, and the mobile silencer unit 3 moves to the front position of the trajectory, that is, the noise reduction position, to perform noise reduction. The mobile silencer unit 3 moves to the rear position of the trajectory, that is, the energy-saving position, which is directly behind the fixed silencer unit 2 instead of in between, further optimizing the front and rear through-area of ​​the air duct to further reduce wind resistance, and has a better energy-saving effect than Example 1.

[0052] The rest is the same as in Example 0.

[0053] Example 3

[0054] refer to Figure 5 and Figure 6 As shown, a movable energy-saving inlet and outlet air silencer system, the mobile silencer unit 3 moves forward and backward along a broken line trajectory or an arc trajectory, the broken line trajectory or the arc trajectory can achieve the left and right position offset of the mobile silencer unit 3, offsetting the mobile silencer unit 3 to the rear of the fixed silencer unit 2 or the vertical structure 7, can further expand the air duct, reduce wind resistance, and improve the energy-saving effect.

[0055] In this embodiment, the rear position of the trajectory of the mobile silencer unit 3 is located directly behind the vertical structure 7, and the mobile silencer unit 3 moves to the front position of the trajectory, that is, the noise reduction position, to perform noise reduction. The mobile silencer unit 3 moves to the rear position of the trajectory, that is, the energy-saving position, which is directly opposite to the vertical structure 7 instead of being in the air duct of the air inlet and outlet 1. Since the silencer unit is directly reduced in the air duct instead of hiding behind the fixed silencer unit 2, this form further optimizes the front and rear through-area of ​​the air duct to further reduce wind resistance, and has a more excellent energy-saving effect than Example 2.

[0056] The rest is the same as in Example 0.

[0057] Example 4

[0058] refer to Figure 7 , Figure 8 and Fig. 9 As shown, a movable energy-saving air inlet and outlet silencer system, the air inlet and outlet 1 includes an upper air inlet and outlet 5 and a lower air inlet and outlet 6, a plurality of fixed silencer units 2 are arranged in the upper air inlet and outlet 5, and a plurality of fixed silencer units 2 and a movable silencer unit 3 are arranged in the lower air inlet and outlet 6, that is, the movable silencer unit 3 is arranged only in the lower air inlet and outlet 6, and not in the upper air inlet and outlet 5. This form can save the cost of installation and arrangement, but due to the balancing effect of air pressure, the energy-saving effect that can be obtained is better. The upper air inlet and outlet 5 and the lower air inlet and outlet 6 can be single-layer, or two-layer, three-layer or even more layers.

[0059] The rest is the same as in Example 0.

[0060] Taking the total length of the silencer system as 3 meters and the flow ratio as 0.5, the upper air inlet and outlet 5 and the lower air inlet and outlet 6 are both single-layer: the air volume is 326×10 4 m 3 / h, the total area of ​​the silencer on the windward side of the air inlet is 184m 2 ; Under strict operating conditions, the total pressure loss coefficient of the silencer system is 3.7; when only the lower air inlet and outlet are made partially movable and moved to a farther back, half of the silencer units are removed, which is equivalent to a silencer with a length of 3 meters and a flow ratio of 0.75. The total pressure loss coefficient of the lower silencer system is 1.2. After removal, the total pressure loss coefficient of the upper silencer system is 3.7. The total total pressure loss coefficient of the silencer is 1.2 by calculation.

[0061] Using the formula ξ=△pt / 0.5 / ρ1 / (v f )2, it can be calculated that under fixed working conditions, △pt = 0.5 × 3.7 × 1.29 × (3260000 / 3600 / 184)2 = 57.80pa. Among them: ξ is the total pressure loss coefficient; △pt is the total pressure loss, pa; ρ1 is the air density upstream of the muffler, kg / m3 In this case, 1.29 kg / m 3 ;v f is the headwind speed, m / s.

[0062] When only the lower layer is made partially movable and moves farther back, the air flow is redistributed into upper and lower layer flows, and ultimately the △pt balance of the upper and lower layers is equal.

[0063] Through trial calculation iteration, it can be concluded that the upper air flow rate is 1182894.75m 3 / h, the air flow rate of the lower layer is 2077105.25m 3 / h, the total air flow of the two floors is still 3260000m 3 / h. The total area of ​​the windward silencer on each floor is 92m 2 , and then calculate the total pressure loss of the upper and lower layers respectively: upper layer △pt = 0.5×3.7×1.29×(1182894.75 / 3600 / 92)2=30.44pa; lower layer △pt = 0.5×1.2×1.29×(2077105.25 / 3600 / 92)2=30.44pa. Through calculation, the resistance of the two layers is the same, so the calculated data is accurate.

[0064] Therefore, when only the lower layer is made partially movable and moved to a greater extent, the energy loss caused by wind resistance saved is: (57.80-30.44) / 57.80=47.33%.

[0065] The aforementioned basic examples and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection in this application. In the scheme of this application, each selected example can be arbitrarily combined with any other basic examples and selected examples.

[0066] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A movable energy-saving air inlet and outlet silencing system, comprising an air inlet and outlet (1), characterized in that: A plurality of fixed silencer units (2) and mobile silencer units (3) are arranged in the air inlet and outlet (1); the fixed silencer units (2) are fixed in the air inlet and outlet (1); the mobile silencer units (3) move forward and backward along a trajectory in the wind in the air inlet and outlet (1) via a guide rail assembly (4); the trajectory of the mobile silencer units (3) includes noise reduction positions between the fixed silencer units (2) and energy-saving positions in front of and / or behind the fixed silencer units (2).

2. The movable energy-saving air inlet and outlet silencer system according to claim 1 is characterized in that: The fixed silencer unit (2) and the mobile silencer unit (3) are arranged in an alternate vertical or horizontal row structure; the noise reduction position of the mobile silencer unit (3) is the front position of the track, and the energy saving position of the mobile silencer unit (3) is the rear position of the track.

3. The movable energy-saving air inlet and outlet silencing system according to claim 1 is characterized in that: The mobile silencer unit (3) moves forward and backward along a straight line track parallel to the wind direction.

4. The movable energy-saving inlet and outlet air silencing system according to claim 1 is characterized in that: The mobile silencer unit (3) moves forward and backward along a broken line track or an arc track.

5. The movable energy-saving air inlet and outlet silencer system according to claim 4 is characterized in that: The rear position of the track of the mobile silencer unit (3) is located directly behind the fixed silencer unit (2).

6. The movable energy-saving air inlet and outlet silencing system according to claim 4 is characterized in that: The rear position of the track of the mobile silencer unit (3) is located directly behind the vertical structure (7).

7. The movable energy-saving air inlet and outlet silencing system according to any one of claims 1, 3 to 6, characterized in that: The air inlet and outlet (1) comprises an upper air inlet and outlet (5) and a lower air inlet and outlet (6); a plurality of fixed silencer units (2) are arranged in the upper air inlet and outlet (5); and a plurality of fixed silencer units (2) and a mobile silencer unit (3) are arranged in the lower air inlet and outlet (6).

8. The movable energy-saving air inlet and outlet silencer system according to claim 1 is characterized in that: It also includes a vertical structure (7) and a transverse structure (8), and an air inlet and outlet (1) is formed between the vertical structure (7) and the transverse structure (8).

9. The movable energy-saving air inlet and outlet silencing system according to claim 1 is characterized in that: The fixed silencer unit (2) comprises a mounting straight pipe (13), a silencer element (14) is connected between the mounting straight pipes (13), the mounting straight pipes (13) are connected to the mounting angle steel (12), the mounting angle steel (12) is connected to the connecting plate (11), and the connecting plate (11) is connected to the embedded angle steel (10) on the air inlet and outlet (1).

10. The movable energy-saving air inlet and outlet silencing system according to claim 1 or 9, characterized in that: The mobile silencer unit (3) comprises a mounting folded tube (15), a silencer element (14) is connected between the mounting folded tubes (15), a folded section of the mounting folded tube (15) is connected to a guide wheel (16), the guide wheel (16) is movably arranged on a guide rail (17) on the air inlet and outlet (1), the guide wheel (16) is connected to a driver (19), and a limit piece (18) is provided at the front and rear extreme positions of the guide rail (17).

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