Constant force spring support hangers implement the standard NBT47038-2013

Product description

Constant force spring hanger, standard nbt47038-2013 (hereinafter referred to as constant force hanger) designed according to the principle of torque balance.The lever principle is applied to realize the constant force spring support and hanger. When the displacement is generated by the expansion of the pipeline, a force with a load change rate of less than 5% is applied to the pipeline to support or suspend the pipeline. Under the allowable load displacement, the load torque and the spring torque are always kept in balance.For the pipe and equipment supported by constant crane, a constant supporting force can be provided when displacement occurs, so additional stress will not be brought to the pipe equipment.The constant crane is generally used to reduce the displacement stress, such as the boiler body of the power plant, the steam, water, smoke, wind pipe and burner of the power plant, and the oil, chemical industry needs such support.When the thermal displacement of a lifting point in the pipeline system is greater than 12mm, it is appropriate to choose a constant crane to support, in order to avoid dangerous bending stress and adverse stress transfer in the pipeline system.Because of its spring and the component manufacture craft is simple, mature, the product performance stability, the economy is good, has been used for a long time in the domestic, therefore is the most widely used type at present.

Main technical features

Rated load: 123N ~ 364120N

Displacement: 50 ~ 400mm

Allowable field load regulation quantity :±10%

Main technical parameters

Constant force spring support and hanger with mechanical or auxiliary spring compensation caused by dynamic friction and manufacturing deviation and other factors of load deviation.The allowable load deviation (including friction) of the constant force spring hanger is not more than 6% over the entire travel range of the upper and lower displacement.The deviation between the maximum load reading in the case of downward displacement and the minimum load reading in the case of upward displacement and the specified load shall be within 6%.

Working principle

Used in various pipeline installations to absorb and buffer the expansion displacement and amplitude generated by some hot and cold pipelines in operation, and to limit or allow the expansion displacement of the pipeline within the design value, so as to ensure the operation safety of the pipeline and equipment.Constant force spring hanger is the use of lever principle, to achieve the spring hanger in the expansion of the pipeline displacement, to the pipeline load rate within 5% of the force, to support or suspend the pipeline.

Structure and form

The constant force spring support and hanger is mainly composed of cylindrical helical spring, fixed frame, rotary frame and motion mechanism, adjusting device, spring housing and so on.

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.