Condenser hydraulic expansion tube/reactor expansion joint/professional expansion tube contracting

Condenser hydraulic expansion tube/reactor expansion joint/professional expansion tube contracting

Our company's high-pressure expansion joint products have been widely used in various fields such as petroleum, chemical, power, refrigeration, food, medicine, etc., and have made due contributions to China's modernization construction.

Our company specializes in undertaking various expansion projects,Hydraulic tube expansion technology mainly utilizes the principle of pressurization to generate ultra-high pressure tube expansion pressure that is sufficient to cause plastic deformation of the heat exchange tube. This pressure acts on the inner wall of the heat exchange tube through an elastic liquid bag, causing plastic deformation of the heat exchange tube and interference fit with the tube plate, resulting in expansion into the tube plate hole.

Hydraulic expansion tube is used in the manufacturing process of heat exchanger tube bundles to ensure the strength expansion, bonding expansion, pre welding expansion, and post welding bonding expansion of the heat exchanger tube plate and heat exchanger tube, ensuring the connection strength and sealing requirements after heat exchanger manufacturing.

Condenser hydraulic expansion tube/reactor expansion joint/professional expansion tube contracting

The connection between heat exchange tubes and tube sheets mainly includes several methods such as expansion, welding, and a combination of expansion and welding. Expansion methods can be divided into mechanical expansion, hydraulic expansion, rubber expansion, and explosive expansion. The mechanical expansion method is commonly used by domestic enterprises, which has high labor intensity and low work efficiency. When a heat exchanger with a tube sheet exceeding 100mm cannot achieve full thickness expansion, and the actual expansion rate, pull-out force, and sealing pressure are not directly related, the operator mainly determines the expansion tightness based on experience, and the expansion quality is greatly affected by human factors. The lubricating medium used during the expansion joint will seep into the gap between the pipe and the tube plate, which will have a negative impact on the subsequent welding quality.

Our company has a large number of professional designers and high-quality managers, dedicated to the research and development of high-pressure hydraulic expansion machines, pneumatic expansion machines, various ordinary hydraulic expansion rods and special purpose hydraulic expansion rods (expansion tubes/liquid bags), pipe head levelers, expansion engineering, pipe plate slotters and other series of products. Especially for thick walled pipes, the ultra-high hydraulic expansion rod used when the expansion pressure is above 200Mpa is at the forefront of this technology.

Condenser hydraulic expansion tube/reactor expansion joint/professional expansion tube contracting