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Maintenance-free air cooler

An air cooler, maintenance-free technology, used in cooling/ventilation devices, electrical components, electromechanical devices, etc., can solve the problems of reliability decline of large motors, and achieve the effect of completely practical structure, improved reliability, and reasonable design

Active Publication Date: 2013-04-10
武汉长海电力推进和化学电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This traditional air cooler requires regular maintenance of the cathodic protection device, and the gasket needs to be replaced after aging, which reduces the reliability of the operation of the large motor

Method used

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Embodiment

[0017] A maintenance-free air cooler, comprising a number of cooling pipes connected in series front and back to form a ring and then superimposed up and down to form four cooling elements 4 spirally wound and supporting plates 2 arranged on both sides of the cooling elements 4, the supporting plates 2 One end is fixed on the mounting plate 1 located at the upper end of the cooling element 4, and the other end is fixed on the end plate 5 located at the lower end of the cooling element 4. The outlet and the inlet end of the cooling element 4 are connected to the connecting pipe 7 through the water collecting pipe 6. The described A connecting flange 8 is also provided on the connecting pipe 7 .

[0018] The cooling parts can be stacked adjacently and sequentially. The inlets of the cooling parts are connected in parallel and connected to the water collecting pipes 6, and the outlets are connected in parallel and connected to the water collecting pipes 6; The inlet of the coolin...

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Abstract

The invention relates to a maintenance-free air cooler, which comprises at least one spiral cooling element and support plates, wherein the at least one spiral cooling element is formed by connecting a plurality of cooling pipes end to end in series to form annular shapes and laminating the annular shapes; the support plates are arranged on the two sides of the cooling element; one end of the support plate is fixed with a mounting plate positioned at the upper end of the cooling element, and the other end of the support plate is fixed with an end plate positioned at the lower end of the cooling element; the inlet and outlet ends of the cooling element are both connected with a connecting pipe by collecting pipes; and a connecting flange is also arranged on the connecting pipe. The maintenance-free air cooler has the advantages of rational design, simple structure, no maintenance, service life as long as that of a large-scale motor, and favorability for improving the running reliability of the large-scale motor.

Description

technical field [0001] The invention relates to an air cooler, in particular to a maintenance-free air cooler. Background technique [0002] Large-scale marine motors, especially high-power permanent magnet motors, usually use a hybrid cooling method that is mainly water-cooled and supplemented by closed-loop air-cooling. The calorific value of the two ends of the large motor winding usually accounts for more than 30% of the copper loss of the entire motor, and the leakage flux at the end of the stator also produces additional iron loss in the ferromagnetic materials near the end, such as the end cover. Therefore, the research on the cooling technology of the motor winding end is the difficulty and the key point of the cooling technology of the whole large motor. The traditional method uses two semicircular coolers to form a full circle. The two air coolers need to be connected by pipelines and sealed. Moreover, not only the cooling pipes but also the tube sheets and end tu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K9/19
Inventor 曾祥铭杨松张文敏
Owner 武汉长海电力推进和化学电源有限公司
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