The author introduces the function, characteristics and classification of the common bellows compensator, explains the calculation of its compensating capacity, application principle in thermal pipeline cascade, its service life and the relevant affecting factors, and discusses how to choose bellows compensator.

Taking the air conditioning water system of a high-rise building as an example, analyses the axial force resulting from ripple compensators on main vertical pipes and its characteristics during operation and pressure test.

The online cladding of corrugated expansion joints of gas mains didn t affect the blast furnace production,saving half the cost of spare parts changing,with the service life of expansion joints being increased twice and the gas pipe net running more safely and reliably.

The paper presents one kind of voltage compensation means that based on phase-shift control,which could make the load voltage constant when the voltage of the grid fluctuated and have a good harmonic filtering capabilities.

Based on voltage compensation principle, a superconducting magnetic energy storage-current limiting (SMES-CL) integrated system is proposed by integrating series SMES (SSMES) and fault current limiting inductor.

The system analysis modei of series voltage controller is built, and the effects of transformer s internai resistance and leakage reactance on its voltage compensation characteristic, when it adopts open-loop and closed-loop control strategies, are investigated, respectively.

By theory computing, the principle of high-field asymmetric waveform ion mobility spectrometer was analysed,and the relationship between compensation voltage and asymmetric waveform RF voltage was deduced.

While the tiltmeter can not record normally because the pendulum deviates from the zero point, the auto zero point adjustment circuit can produce a precise compensation voltage to adjust the pendulum to the zero position.