Vacuum bellows

Metal bellows are metallic components featuring a thin-walled, annular corrugated structure. Renowned for their excellent flexibility, pressure resistance, and corrosion resistance, they find extensive application across multiple sectors. A brief overview follows:

Core Characteristics

Expandable Deformation: Capable of compensating for displacement within specified ranges axially, laterally, or angularly, absorbing deformation caused by thermal expansion/contraction and vibration in pipelines and equipment.

Pressure-Resistant Sealing: Constructed from metals such as stainless steel, it withstands considerable pressure while ensuring leak-proof sealing during medium conveyance.

Weather and Corrosion Resistance: Withstands complex operating conditions including extreme temperatures, humidity, and acidic/alkaline environments, offering extended service life.

Primary Applications

Piping Systems: Serves as the core component of expansion joints in chemical, petroleum, thermal, and water supply/drainage pipelines. Compensates for thermal deformation and installation deviations, reducing pipeline stress and protecting pipework and equipment.

Mechanical Equipment: Employed in piping connections for aerospace, automotive, and marine applications. For instance, bellows in automotive exhaust systems absorb engine vibrations and reduce noise transmission, while aerospace bellows facilitate flexible connections in precision piping.

Instrumentation: Serves as sensing elements in pressure gauges, utilising bellows’ expansion and contraction to measure parameters like pressure and liquid level. Commonly found in pressure gauges and liquid level indicators.

Construction Engineering: Employed in building water supply/drainage and HVAC systems, as well as seismic connection components for bridges and steel structures, enhancing system deformation resistance and seismic resilience.