A pressure regulating device for a heating system

Abstract

The present invention relates to a pressure adjustment device for a heating system. The device comprises a shell part, a pneumatic conical plug coarse adjustment part, an electric valve fine adjustment part, a glow heater and a control part. According to the technical scheme of the device, the pneumatic conical plug coarse adjustment part and the electric valve fine adjustment part are combined, so that the gas discharge amount of a furnace is controlled. In this way, the pressure is accurately controlled. The glow heater is used for timely combusting the combustible gas in the discharged gas. When the pressure of the heating system changes to exceed a preset value, the air cylinder of the pneumatic conical plug coarse adjustment part acts to push a conical plug. In this way, the conical plug is opened to provide an opening degree coarse adjustment pressure. Meanwhile, the electric valve of the electric valve fine adjustment part is opened to provide an opening degree fine adjustment pressure according to a measured pressure value and a preset value. Therefore, the pressure is stabilized at the preset value. On the following conditions that the pressure continues to rise, the electric valve is adjusted to be at the maximum opening degree and the pressure preset value cannot still not be reached, the opening degree of the conical plug is increased by the air cylinder. After that, an electric actuator readjusts the opening degree of the electric valve till the pressure is stabilized at the preset value. The device is capable of quickly adjusting the pressure of the heating system, so that the device can be adapted to a plurality of heating systems. Meanwhile, the device is large in adjusting range.

Description

technical field [0001] The invention relates to a pressure regulating device for a heating system, in particular to a pressure regulating device for the isolation section of the heating system. The isolation section operates at a steady pressure. Background technique [0002] According to the heating process requirements of some industrial furnaces, the heating system needs to be isolated into several sections. The blocking between different isolation sections is realized through the pressure regulating device and the sealing structure. The current pressure regulating device that realizes the blocking effect is composed of a release pipe and a pneumatic cover plate. The cover plate is connected to the pneumatic device through a chain, which occupies a large space, has poor pressure adjustment accuracy and slow response, and has no combustible gas treatment equipment. The experience is directly discharged into the workshop, so the pressure adjustment device currently used i...

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the structure of the pressure adjustment device is complicated, multiple signal corrections are used, and the pressure adjustment process is cumbersome.

The disadvantage of this technology is that the signal is sensed by the pressure sensor, and the pressure is adjusted by controlling the opening and closing of the valves of the main flue and the bypass flue. The delay is large and the pressure adjustment accuracy is low.

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