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Characteristics of flexible rubber check used in sea discharge engineering

[source: unknown] [date: 2020-09-28 15:30] [heat: ]
Characteristics of flexible rubber check used in sea discharge engineering
Flexible rubber check valve is also known as rubber duckbill valve, rubber blowdown check valve, duckbill rubber check valve, rubber check valve, rubber slow closing check valve, etc. With the development of science and technology and the appearance of new materials, a new type of valve flexible rubber check valve has been successfully developed abroad. The flexible rubber check valve is made of elastic neoprene and man-made fiber after special processing, which is similar to duck's beak. Under the condition of high outlet pressure, the outlet pressure of the duckbill increases gradually; when the outlet pressure is not high, the outlet pressure can be maintained. Compared with clapper valve and gate valve commonly used in engineering, flexible rubber check valve has many advantages, and has been widely used in urban, factory drainage and pump station water discharge projects. It is also used in some sea drainage projects, such as Weymouth discharge port in UK and new territories discharge outlet in Hong Kong SAR. According to the domestic and foreign literature and some physical model tests, combined with the Fengpu sea drainage project in Shanghai, this paper briefly analyzes the advantages and disadvantages of using flexible rubber check valve in the sea drainage project and the applicable conditions of the flexible rubber check valve in the sea drainage project.
Disadvantages of flexible rubber check valve:
1. Increase project cost. Because of the complex processing technology of flexible rubber check valve, only a few manufacturers can produce products that meet the requirements of use and customize them according to the specific project, so the price is expensive.
2. Increase the head loss of diffuser. Comparison of head loss between fixed nozzle and flexible rubber check valve installed at single hole discharge outlet under the same conditions. The head loss of flexible rubber check valve is twice as much as that of fixed nozzle, which increases the energy consumption of discharge outlet and the annual operation cost.
Gongyi Yuanda water supply materials Co., Ltd. is a professional manufacturer engaged in the research and development of water supply and drainage equipment, with strong technical force, high quality products and timely supply. The main products are: rubber joint, waterproof sleeve, expansion joint, force transmission joint, duckbill valve, expansion joint, compensator, metal hose and other products. Tel: 0371-64030029, welcome to contact us!
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