Directly Buried Axial Expansion Bellows Without Bracket Easy Insatllation

Directly buried axial pipe expansion joint without bracket easy insatllation

General description

Because the axial stiffness of the corrugated expansion joint is very small, the axial force produced by the internal pressure of the pipeline often affects the design and use of the pipeline system. The axial force is not subjected to any constraint to the corrugated expansion joint in the pipeline system, called the free (unbalance) corrugated expansion joint; the axial force is constrained by some mechanisms or devices and cannot be carried to the corrugated expansion joint, called the balanced corrugated expansion joint. The balanced corrugated expansion joint is divided into two kinds of damping and absorption type: the corrugated expansion joint, which uses the members of the rod and hinges to prevent the axial force conduction, is a damping type, and the balance of the corrugated expansion joint is realized by using the working pressure itself as an absorption type.

Structural characteristics

The compensator has good self-sealing protection performance and can be buried directly in the ground with a limited-position device. There is no need to install a merger.It is allowed to install more than two compensators within the main fixed pipe frame to reduce the secondary fixed pipe frame for split compensation Good guiding performance, easy for construction and installation. The investment is low, no maintenance is needed, and it has certain economic and social benefits. At the same time, our company has developed a "two-way without thrust directly buried corrugated expansion joint" according to customer needs.

Application examples

A straight buried carbon steel pipe line, 250m long, nominal diameter DN300m, actual working pressure 1.3MPa, medium maximum working temperature 12 ℃, environment minimum temperature 5 ℃, fatigue
Life expectancy is more than 3000 times. Take over the connection and try to choose the directly buried axial bellows compensator. And calculate the force of the compensator on the main fixed pipe frame (the bellows are not pre-stretched, and the friction resistance of the soil against the directly buried pipe is not considered)

Jiangsu Qianyuan Feida Power Equipment Co., Ltd. (formerly Zhenjiang Feida Expansion Joint Manufacturing Co., Ltd.) is a designated joint enterprise of the former Ministry of Power, Machinery and Chemical Industry. At present, the company covers an area of 60,000 square meters and a building area of 40,000 square Meters, 120 employees, including 20 technical personnel, total assets of more than 25 million yuan. 

The company's main products:

1.Metal, non-metal and air-cooled island expansion joints, etc.
2. Air damper series, smoke duct shut down, adjusting baffle, isolation door, flapper door;

3. Constant force spring support hanger, variable spring support hanger;

4. Auxiliary equipment of power station: steel structure, oiling Device and lubricating oil storage tank, centrifugal oil purification device
Company), electric air heaters, gasifiers, plate heat exchangers and units, fully automatic constant-speed pulverized coal samplers; fast cooling devices for steam turbines, DC bolt electric heaters for steam turbines; multi-stage water seals, steam-water separators, agents APV plate heat exchanger; American Tysil Roots fan, complete set of ash storage equipment, anti-blocking device of raw coal bunker; steam turbine cosmetic plate and coal mill soundproof cover, cooling tower sound insulation screen, dustproof wall

The company is a "star enterprise" in Jiangsu Province, a "high-tech enterprise" in Jiangsu province, a "model enterprise for comprehensive management" in Jiangsu province, the first batch of 100 contract-honoring, trustworthy enterprises in Jiangsu Province, a thousand enterprises with the best economic benefits in Jiangsu, and a comprehensive ministerial Quality management unit, national measurement assurance confirmation unit, Zhenjiang city machinery industry advanced quality enterprise. The enterprise quality management system operates in strict accordance with ISO9001.