Multifunctional hydraulic equilibrium automatic control and regulation device

Abstract

The invention relates to a multifunctional hydraulic equilibrium automatic control and regulation device which comprises a control and regulation box, wherein a human-machine interface is arranged on a panel of the control and regulation box, a PLC (Programmable Logic Controller) is arranged in the control and regulation box and is electrically connected with the human-machine interface through a communication interface. The multifunctional hydraulic equilibrium automatic control and regulation device also comprises an analog quantity expander, an analog quantity input output terminal, a switching input output relay set and a switching input output terminal; and the valve opening of an electric valve is automatically controlled by combining with a self-checking operation process and an automatic control and regulation operation process through establishing a communication connection of the human-machine interface and the PLC and defining a port. According to the invention, common heating construction technicists carry out setting and selection on the human-machine interface according to the guidance of care instructions, opening of an electric butterfly valve or an electric regulating valve is automatically controlled and regulated easily after operation parameters of a controlled valve combination are set, low investment cost is realized and wide application demands are met.

Description

technical field [0001] The invention relates to hydraulic balance technology in a water system, in particular to a multipurpose hydraulic balance automatic control device. Background technique [0002] In buildings equipped with central air-conditioning or domestic hot water, there are usually two types of hydraulic balance in the water system: (1) using static balancing valves or dynamic balancing valves without controllers, (2) using The controller such as DDC or PLC controls the electric regulating valve. [0003] The former is used in specific and fixed occasions, and lacks the extension of parameter association and adjustment functions; the latter is applied in overall or local group control occasions, and it is necessary to write a special corresponding program for the controller. For different hydraulic balance applications and debugging, programming must It is completed by automation professionals, and general HVAC engineering construction personnel cannot solve it ...

AI Technical Summary

Problems solved by technology

[0003] The former is used in specific and fixed occasions, and lacks the extension of parameter association and adjustment functions; the latter is applied in overall or local group control occasions, and it is necessary to write a special corresponding program for the controller. For different hydraulic balance applications and debugging, programming must It is completed by automation professionals, and general HVAC engineering construction personnel cannot solve it by themselves

[0004] For buildings with existing central air-conditioning systems and domestic hot water needs, hydraulic balance adjustment is a content with a high proportion, a wide range, and obvious energy-saving effects in the implementation of energy-saving renovations. Many systems such as central air-conditioning. Generally, only butterfly valves or electric butterfly valves are installed in water heaters, main vertical pipes of each cooling or heating zone, and horizontal branch pipes of cold and warm water pipes on each floor. If hydraulic balance adjustment is required, dynamic balance valves or electric adjustments must be replaced according to the general practice. Valves, this will cause the cost of the renovation project to rise, and the construction will cause many adverse effects such as water pipe changes, welding, damage to the decoration surface, partial cooling or heating suspension, etc.

Another example is that some high-grade star-rated hotels need to carry out heat recovery and energy-saving transformation. In the case of heat recovery applications with more than two closed hot water partition systems, each hot water partition must achieve heat recovery balance, then An electric regulating valve is needed to adjust the water volume. If the optimal heat recovery condition of heat extraction is to be achieved, the original butterfly valve only realizes on-off control. Now it is necessary to increase the regulating function and replace it with an electric regulating valve Establishing an automatic control system will inevitably increase investment and at the same time cause a lot of negative impacts on the normal operation of the hotel. If there is not enough space on the construction surface, and the regulating valve is much larger and more expensive than the butterfly valve, so The price paid and the impact caused are enough to make the owner quit

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