Steel brake energy recovery air duct suitable for cooling tower

Abstract

The utility model discloses a steel brake energy recovery air duct suitable for a cooling tower, and belongs to the technical field of cooling towers. An air duct is arranged on the periphery of the fan, the air duct comprises a steel outlet V-shaped recovery section, a high-roundness straight pipe section and an inlet inverted-V-shaped flow guide section which are sequentially connected from top to bottom, a fan protection net is arranged at the top of the outlet V-shaped recovery section, and a supporting rod used for supporting the fan protection net is further arranged at the top of the outlet V-shaped recovery section. The utility model has the beneficial effects that the roundness of the air duct is high, so that the working efficiency of the fan is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of steel motion energy recovery wind pipes suitable for cooling tower, belong to cooling tower technical field. BACKGROUND

[0002] Existing kinetic energy recovery wind pipe is all glass steel material, and steel wind pipe is generally straight wind pipe. With the development of times, the progress of science and technology, people pay more and more attention to environmental protection and energy saving. And glass steel is not recyclable, many customers have no longer accepted glass steel material, and steel straight wind pipe cannot recover wind turbine kinetic energy. INVENTION CONTENTS

[0003] To solve the defects of prior art, the utility model aims at providing a kind of steel motion energy recovery wind pipe suitable for cooling tower, which improves the roundness of wind pipe and further improves the working efficiency of fan.

[0004] The technical scheme of the utility model is: a kind of steel motion energy recovery wind pipe suitable for cooling tower, fan outer periphery is equipped with wind pipe, the wind pipe includes steel outlet V-shaped recovery section, high roundness straight pipe section and import inverted V-shaped guide section connected in sequence from top to bottom, the outlet V-shaped recovery section top is equipped with fan protection net, and the outlet V-shaped recovery section top is also equipped with support rod for supporting fan protection net.

[0005] The outer wall of the outlet V-shaped recovery section, the high roundness straight pipe section and the import inverted V-shaped guide section is provided with a longitudinal reinforcing rib.

[0006] The bottom radius of the import inverted V-shaped guide section is greater than the top radius.

[0007] The support rod is connected to the outlet V-shaped recovery section at both ends.

[0008] The top radius of the outlet V-shaped recovery section is greater than the bottom radius.

[0009] The outlet V-shaped recovery section, the high roundness straight pipe section and the import inverted V-shaped guide section are connected by wind pipe flange and rivet.

[0010] The top outer periphery of the outlet V-shaped recovery section is provided with a wind pipe flange, and the outer periphery of the fan protection net is fixedly connected with the wind pipe flange fixed on the top of the outlet V-shaped recovery section.

[0011] The wind pipe flange is a steel wind pipe flange, which is formed by laser processing.

[0012] The utility model has the advantages that:

[0013] 1. The import inverted V-shaped guide section guides the air in the cooling tower into the wind pipe relatively gently, reduces the wind resistance at the inlet of the wind pipe, and increases the kinetic energy of the fan by reducing the wind resistance.

[0014] 2. When air passes through the V-shaped recovery section at the outlet, the cross-section increases and the speed decreases, thus recovering the reduced kinetic energy of the air.

[0015] 3. The working efficiency of the fan is directly related to the gap between the fan blades and the fan casing (axial flow fans are generally required to be within ≤0.005D). The steel fan casing flange is laser-processed, which greatly improves the roundness of the fan casing and thus improves the working efficiency of the fan.

[0016] 4. Fiberglass dynamic pressure recovery ventilation ducts require the use of molds for processing, while steel ventilation ducts, being riveted, can be processed to any size and are not limited by molds. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] The following labels are attached to the diagram: 1. Inlet inverted V-shaped guide section, 2. High-roundness straight pipe section, 3. Outlet V-shaped recovery section, 4. Fan protection net, 5. Support rod, 6. Fan duct flange, 7. Reinforcing rib, 8. Fan. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 Further explanation of this utility model:

[0020] A steel regenerative braking duct suitable for cooling towers is provided. The duct is located around the periphery of a fan 8. The duct includes, from top to bottom, a steel outlet V-shaped recovery section 3, a high-roundness straight pipe section 2, and an inverted V-shaped guide section 1. The bottom radius of the inverted V-shaped guide section 1 is larger than its top radius, increasing the guiding area and allowing air from the cooling tower to be gently guided into the duct. A fan protection net 4 is provided at the top of the outlet V-shaped recovery section 3 to protect the fan 8 and prevent debris from falling into the duct and damaging it. The top radius of the V-shaped recovery section 3 at the outlet is larger than its bottom radius. This section is used to recover the kinetic energy of the air exiting the fan. As the air passes through the V-shaped recovery section, the cross-section increases, reducing its velocity and allowing for the recovery of this reduced kinetic energy. A support rod 5 is also provided at the top of the V-shaped recovery section 3 to support the fan protective net 4. The two ends of the support rod 5 are connected and fixed to the V-shaped recovery section 3, supporting the fan protective net 4 and preventing it from collapsing under gravity. The fan 8 draws in cold outside air into the duct through rotation, where it undergoes evaporative heat exchange before being discharged from the V-shaped recovery section 3 at the top of the duct. As the air passes through the V-shaped recovery section 3, the cross-section increases, reducing its velocity, and finally, the air passes through the fan protective net 4 and is discharged into the atmosphere.

[0021] The outer wall of the outlet V-shaped recovery section 3, the high roundness straight pipe section 2 and the inlet inverted V-shaped guide section 1 is provided with longitudinally extending reinforcing ribs 7. The reinforcing ribs 7 are arranged to enhance the strength and rigidity of the outlet V-shaped recovery section 3, the high roundness straight pipe section 2 and the inlet inverted V-shaped guide section 1, prevent deformation and ensure the roundness of the air duct.

[0022] The outlet V-shaped recovery section 3, the high roundness straight pipe section 2 and the inlet inverted V-shaped guide section 1 are connected by air duct flanges 6 and rivets to ensure the stability of the overall structure of the air duct. The top outer periphery of the outlet V-shaped recovery section 3 is provided with an air duct flange 6, and the outer periphery of the fan protection net 4 is fixedly connected with the air duct flange 6 fixed on the top of the outlet V-shaped recovery section 3. The air duct flange 6 is a steel air duct flange, which is formed by laser processing, greatly improving the roundness of the air duct and further improving the working efficiency of the fan.

[0023] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. A steel kinetic energy recovery stack suitable for use in a cooling tower, characterized in that, The fan (8) is provided with a wind drum, the wind drum comprises a steel outlet V-shaped recovery section (3), a high roundness straight pipe section (2) and an inlet inverted V-shaped guide section (1) connected in sequence from top to bottom, the top of the outlet V-shaped recovery section (3) is provided with a fan protection net (4), and the top of the outlet V-shaped recovery section (3) is also provided with a support rod (5) for supporting the fan protection net (4); The outer walls of the outlet V-shaped recovery section (3), the high roundness straight pipe section (2) and the inlet inverted V-shaped guide section (1) are provided with longitudinally extending reinforcing ribs (7); The outlet V-shaped recovery section (3), the high roundness straight pipe section (2) and the inlet inverted V-shaped guide section (1) are connected through a wind drum flange (6) and rivets; The top of the outlet V-shaped recovery section (3) is provided with a wind drum flange (6), the outer periphery of the fan protection net (4) is fixedly connected with the wind drum flange (6) fixed on the top of the outlet V-shaped recovery section (3), and the wind drum flange (6) is a steel wind drum flange formed through laser processing.

2. A steel brake energy recovery stack for a cooling tower according to claim 1, wherein The bottom radius of the inlet inverted V-shaped guide section (1) is greater than the top radius.

3. A steel brake energy recovery stack for a cooling tower according to claim 1, wherein The support rod (5) is connected with the outlet V-shaped recovery section (3) at both ends.

4. A steel brake energy recovery stack for a cooling tower according to claim 1, wherein The top radius of the outlet V-shaped recovery section (3) is greater than the bottom radius.

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