Pipeline Inline Pressure Balanced Expansion Joint Custom Design Absorb Movements

Advabtages

This type of expansion joints consist of two working bellows located at the ends, one balanced bellow located in the middle, tie rod, the end plate and some other components. The effective area of balanced bellows is twice of the working bellows. So the lateral axial thrust caused by working bellows’ Internal Pressure is canceled out by another thrust coming from the opposite direction caused by the balanced bellows’ Internal Pressure through the tie rod. Therefore the axial thrust doesn’t output, which means the piping and the equipment only carry the rigid counter-force caused by the movements of expansion joints instead of the axial thrust caused by Internal Pressure. Compared with the blinding plate force, rigid counter-force is dozens of times smaller. So fixing the equipment and pipes becomes easier and available. But this type of expansion joints can only absorb axial movements.

Specifications

Material of Bellows: SS 304(SS 321 and SS316L are also available)

Nominal Diameter: DN300-DN1200

Working Pressure: PN2.5/6/10/16/25

Working Temperature: -80℃/+450℃

Standard ;EJMA

Connection: Pipe end connection

Material of Connection: Carbon steel (Special material of connection to meet specific customer & industry requirements)

Other choices: Inner sleeve, carbon steel, SS304(SS 321 and SS316L are also available)

Notes: If you have any other requirement, please contact us.

Application in corrugated expansion joint equipment

The bending force balance type bellows expansion joint is used for the connection between equipment and equipment. Its function is to compensate the thermal expansion of the pipeline between the two equipment, reduce the force generated by the installation error on the equipment, and facilitate the installation.It adopts the bending force balance-type corrugated expansion energy-saving to make the equipment not affected by the blind plate force caused by the internal pressure, which improves the force condition of the equipment and makes the equipment easy to fix.Corrugated expansion joints are used as pump couplings on pump inlet and outlet pipes.A universal (ie universal) expansion joint installed on the pump's inlet and outlet pipelines to compensate for the thermal expansion of the pipeline, reduce the thrust of the pipeline's thermal expansion on the pump, or absorb the vibration generated by the pump operation.

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.