Metro fan anti-surge device
An anti-surge and fan technology, which is applied to the parts of the pumping device for elastic fluid, mechanical equipment, machines/engines, etc., can solve the problems of large damage to the fan and affect the service life of the fan, and achieve the effect of convenient assembly
Inactive Publication Date: 2019-05-31
NANTONG DIWATE ENERGY SAVING FAN
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Problems solved by technology
[0003] The surge of the subway fan has great damage to the fan and seriously affects the service life of the fan
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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0017] As shown in the figure, an anti-surge device for a subway fan of the present invention includes an outer cylinder 1, an annulus 2, a steady flow ring 3, and a plurality of deflectors 4. The outer cylinder 1 includes a middle main cylinder a5 and is arranged in the middle The inclined cylinder a6 and the extended end cylinder 7 at both ends of the main cylinder a5, the inclined cylinder a6 is a conical cylinder and the diameter of the larger end matches the diameter of the middle main cylinder a5 and is fixedly connected to both ends of the middle main cylinder a5 The diameter of the smaller end of the inclined cylinder a6 matches the extension cylinder 7 and is fixedly connected to the extension cylinder 7. Th...
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The invention discloses a metro fan anti-surge device. The metro fan anti-surge device comprises an outer barrel, an annular surface, flow stabilization rings and a plurality of flow deflectors; the outer barrel comprises a middle main barrel body a, an inclined barrel body a and an extending end barrel body, and the inclined barrel body a and the extending end barrel body are arranged at the twoends of the middle main barrel body a; the annular surface comprises a middle main barrel body b and inclined barrel bodies b arranged at the two ends of the middle main barrel body b; the flow stabilization rings are cylindrical barrel bodies, are arranged to be concentric with the outer barrel, and are located between the inclined barrel body a and the inclined barrel bodies b; and the flow deflectors are arranged in the axis direction of the outer barrel and fixed to the inner wall of a cavity defined by the side surfaces of the inclined barrel body a, the inclined barrel bodies b and the flow stabilization rings, and the multiple flow deflectors are distributed in the inner wall of the cavity in the circumferential direction of the outer barrel at equal intervals. According to the metro fan anti-surge device, the outer barrel, the annular surface, the flow stabilization rings and the multiple flow deflectors are adopted to form a unique runner so that surge can be eliminated, in addition, the effect is good, the structure and a fan shell are organically combined together, and assembling is convenient.
Description
technical field [0001] The invention relates to an anti-surge device, in particular to an anti-surge device for a subway fan. Background technique [0002] Surge is a vibration under abnormal working conditions that occurs when the flow rate of a turbo compressor (also called a vane compressor) is reduced to a certain extent. Centrifugal compressor is a form of turbo compressor, and surge is very harmful to centrifugal compressor. The occurrence of surge is related to the characteristics of fluid machinery and pipelines. The larger the capacity of the pipeline system, the stronger the surge and the lower the frequency. Products generally have a pressure-flow characteristic curve, according to which the surge point, surge boundary line or surge area can be determined. The surge of fluid machinery will destroy the flow regularity of the medium inside the machine, generate mechanical noise, cause strong vibration of working parts, and accelerate the damage of bearings and sea...
Claims
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IPC IPC(8): F04D29/66F04D29/44
Inventor 张希良
Owner NANTONG DIWATE ENERGY SAVING FAN