Application and analysis of air-control disc auxiliary brake for mobile rig;

To enhance the capability and reliability of deep well drillingrig, proposals are put forward in the engine selection, auxiliary brake design and air control method.

Braking system is both the functional equipment and safety equipment for petroleum rigs,with dominating brake and auxiliary brake as its core parts.

The auxiliary control network serving for whole plant has realized the center control of all auxiliary workshops in Wangtan Power Plant,and the local unattended goal in auxiliary workshops.

According to the characteristics of auxiliary workshops in power plant and the conventional distribution control method, an integrated supervisory control system is proposed.

The paper introduces present situation of auxiliary workshop control system in the thermal power plant, and compares industrial Ethernet network and standard Ethernet network.

In this paper,the new direction about power plant’s automation design was discussed in system from several sides as follows: the control room and control mode progress,the integration of DCS,the control scheme for auxiliary workshop,the video supervisory system and so on.

This Article analyzed the assistant control network consists of program control system of all assistant workshop,including coal-transmission,dust-clearing,chemical water and Flue Gas desulfuri -zation,It realized the control project of main control room for every assistant control system.