Power supply system of buried sewage treatment equipment fan room

Abstract

The invention discloses a power supply system of a buried sewage treatment equipment fan room. A drive module for converting alternating current provided by a power supply device into alternating current or direct current required by a load device is arranged between a power supply device and the load device, an input stage of the drive module is connected with a filtering decoupling circuit for inhibiting differential mode interference from the power supply device, the power supply device is connected with the drive module through a connecting cable, and the drive module and the load device are connected through a connecting cable, at least one core wire is arranged in an outer protection layer of each connecting cable and wraps an inner protection layer. The power supply system is provided with a first lightning protection circuit and a second lightning protection circuit, wherein the first lightning protection circuit is connected between the input end and the grounded end of the drive module, and the second lightning protection circuit is connected between the output end and the grounded end of the drive module. The power supply system of the buried sewage treatment equipment fan room can improve the performance on at least one aspect of safety, anti-interference or controllability and the like.

Description

technical field [0001] The invention relates to a sewage treatment technology, in particular to a power supply system and ancillary facilities of a fan room of an underground sewage treatment equipment. Background technique [0002] The buried sewage treatment equipment is a kind of sewage biological treatment system with biofilm as the main body of purification. It has the characteristics of low consumption, stable operation and convenient maintenance, so it has a wide application prospect and promotion value. [0003] Typical buried sewage treatment equipment includes grid wells, regulating tanks, primary sedimentation tanks, dynamic oxidation contact tanks, clarifiers and fan rooms connected to the dynamic oxidation contact tanks; the dynamic oxidation contact tanks include reactors The main body, the inner shell of the reactor, and the rotary-cut agitator; the inner shell of the reactor is arranged inside the main body of the reactor, and its bottom opening communicates...

AI Technical Summary

Problems solved by technology

[0005] There are deficiencies in the design of the above-mentioned fan room power supply system: First, the lightning protection measures are not good enough. When the lightning current is too strong, a small part of the lightning current may enter the load equipment, which will cause the load equipment to be damaged under the impact of the lightning current residual voltage. , which makes the system less secure and greatly shortens its service life; second, the anti-interference measures are not ideal, and the load equipment is easily disturbed by factors such as power supply and external environment, which has a great impact on the stable operation of the load equipment; The reason is that the control is not convenient enough, and the adjustment of its control parameters is not flexible enough to meet the needs of users well.

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