Flow-induced heat exchanger tube bundle vibration testing system
A tube bundle vibration and testing technology, which is applied in fluid dynamics testing, machine/structural components testing, instruments, etc., can solve the problems of complex operation and single research content, and achieve simple operation, easy comparison, and easy realization Effect
Inactive Publication Date: 2016-06-08
ZHEJIANG UNIV
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Problems solved by technology
As for the vibration of tube bundles induced by two-phase flow, there are still some issues to be explored urgently.
Although some experimental devices have been used to study the vibration of tube bundles induced by single-phase and two-phase flow, most of the experimental devices can only be used for single-phase flow experiments, and only a small number of experimental devices can be used for two-phase flow experiments, and have the ability to operate Due to the shortcomings of complexity and single research content, it is urgent to design an experimental device for tube bundle vibration induced by two-phase flow that is easy to operate
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[0023] The present invention will be further described below in conjunction with drawings and embodiments.
[0024] Such as figure 1 As shown, the system of the present invention is mainly formed by sequentially connecting the inlet part 1, the experimental part 2 and the outlet part 3; wherein:
[0025] The overall cross section of the inlet part 1 from top to bottom is a gradually smaller rectangular section, the lower part of which is a diffuser chamber 1.2, and the upper part is a gas-liquid mixer 1.3; the lower end of the diffuser chamber 1.2 is connected to the gas distributor 1.1, and the diffuser chamber 1.2 There is a liquid inlet pipe 1.4 in the middle; the gas distributor 1.1 is connected to the outlet of the compressor 12 through the three-way ball valve 9, the gas flow meter 10 and the compressor outlet valve 11 in sequence; the liquid inlet pipe 1.4 passes through the liquid flow meter 8 and the outlet valve in turn 7. The centrifugal pump 6, the inlet valve 5 a...
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The invention discloses a flow-induced heat exchanger tube bundle vibration testing system. The system is mainly formed by connection of an inlet component, an experimental component and an outlet component. Two inlets of the inlet component are connected with a compressor for supplying gas and a centrifugal pump for supplying liquid respectively, a gas-liquid mixer is arranged on the upper portion of the inlet component, and a diffusion cavity is formed in the lower portion of the inlet component; fluid or a gas-liquid mixture flowing out of the outlet component enters a storage tank, and an outlet of the storage tank is connected with an inlet of the centrifugal pump; the experimental component is provided with a replaceable tube plate and a replaceable tube bundle so as to achieve testing of various tube bundles, a pressure gauge is installed at an access port of the experimental component, the inlet ends of a double-conducting probe and a dynamic strain measurement device are arranged on the wall surface, and the output ends of the double-conducting probe and the dynamic strain measurement device are connected with a computer. By the adoption of the system, single-phase and two-phase flow-induced heat exchanger tube bundle vibration testing can be conducted on tube bundles with different arrangement modes, lay ratios and tube materials under different operation parameters, parameters including critical flow velocity, amplitude and damping are obtained, and vibration performance under various working conditions is evaluated.
Description
technical field [0001] The invention relates to a tube bundle vibration test system for a heat exchanger, in particular to a fluid-induced tube bundle vibration test system for a heat exchanger. Background technique [0002] In the process industry, most processes are related to heating, cooling and heat preservation. In order to realize the heat transfer between process materials, people often use various types of heat exchangers. It is a chemical, petroleum, food, power, Process equipment widely used in metallurgy, pharmaceutical and nuclear energy industries. Among them, the shell-and-tube heat exchanger is widely used. In the shell-and-tube heat exchanger, due to the setting of the baffle, the tube bundle in the heat exchanger is always washed by the lateral flow, and it is easy to occur due to fluid-induced vibration. Destruction fails. In recent years, with the increase of the operating flow rate in the heat exchanger and the large-scale development of equipment, the...
Claims
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IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 刘宝庆张亚楠陈小阁郑毅骏范芳怡
Owner ZHEJIANG UNIV