Needle fin tube and plain tube mixedly arranged self-supporting type heat exchanger

A pin-fin tube, self-supporting technology, applied in heat exchanger types, indirect heat exchangers, fixed tubular conduit components, etc., can solve the problem of reducing the mass flow rate of effective flushing pin-fin tubes, and the limitation of heat transfer capacity of type heat exchangers , pin-fin tube and shell side bypass flow, etc., to achieve the effect of solving tube bundle oscillation, improving heat transfer coefficient, and increasing heat transfer process
CN101216264AInactive Publication Date: 2008-07-09HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN ENG UNIV
Publication Date
2008-07-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a self-support type heat exchanger with mixed arrangement of pin-fin tubes and bare tubes, which comprises a shell, a tube bundle disposed inside the shell, wherein the two ends of the tube bundle are respectively disposed on a fixed tube plate and a floating tube plate, the fixed tube plate is fixedly installed between the lower end of the shell and a channel, an upper header is disposed at the upper end of the shell, a shell pass inlet port and a shell pass outlet port are disposed on the shell, a tube pass inlet port and a tube pass outlet port are disposed on the channel, and the tube bundle is composed of bare tubes and pin-fin tubes with high-efficient heat transfer capability in a mixed arrangement. The invention provides a self-support type heat exchanger with mixed arrangement of pin-fin tubes and bare tubes. The inventive heat exchanger has no need of baffles and tube supporting elements; and mixes the pin-fin tubes and the bare tubes together, so that the pin-fins of the pin-fin tubes form mutual support with the bare tubes, thereby achieving the purposes of reducing tube vibration, reducing heat exchanger volume, and improving unit volume heat exchange efficiency of the heat exchanger.
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Description

(1) Technical field

[0001] The invention relates to a heat exchanger, in particular to a lubricating oil cooler. (2) Background technology

[0002] Lubricating oil cooler is a heat exchanger widely used in power systems such as power plants and ships. The main function of the lubricating oil cooler is to cool the lubricating oil flowing through various mechanical equipment such as steam turbines to an appropriate temperature, so that these equipment will not cause accidents due to improper lubricating oil temperature. After the lubricating oil passes through these equipments, the oil temperature will generally increase by 20-30°C, or even higher. When the temperature of the lubricating oil increases, its viscosity decreases, and at this time, the lubricating oil can no longer meet the requirements of lubrication and cooling well. If the lubricating oil is directly lubricated to the bearing without cooling after work, the light one will threaten the safe and stable operatio...

Claims

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