As theentry&exit Passages for the Personnel reseue and intera ctioneaeh door equipped with a set of Pressure balance device which enables the opening and elosing of the door in the simulated vaeuum test environment A biaxial hinge meehanism is fitted in eaeh door spindle to facilitate fast opening of the rectan gular door which eombined with aeoordinated loeking meehanismensure s.

The structure and working mechanism on the new type of spring-piston pressure auto-balancing device with condenser was introduced.

The procedure testing details was analyzed, a jack sealing device to substitute the original one and a pressure balancing device to alleviate the impacting pressure were selected, which can ensure the convenience and security in the single heat exchange tube pressure testing.

An elastic-damper balancing device used for the 7th continuous rolling mill at SISG;

Reform of the top knife balancing device in the plate crosscut machine;

The auxiliary balancing device for beam pumping units is a movable counterbalance installed on the walking beam,which reciprocates along the back arm of the beam under the action of the linkage and results in good balancing effect.

Control and regulation of spring's balance device;

Design of elastic colloid balance device and its usage in rolling mill;

A balance device is added for the wire rope to make two wire ropes equal.

Feedwater pump equilibrator plays a vital role in the operating reliability of feedwater pump.