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Constant pressure fluid control method

A control method and fluid technology, applied in the direction of pump control, non-variable pumps, machines/engines, etc., can solve the problems of time-consuming, difficult and cost-intensive integration and erection, so as to save power consumption, prolong service life, Avoid the effect of frequent start and stop

Active Publication Date: 2011-12-07
DELTA ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, in addition to the time-consuming and difficult integration and erection, the cost of the controller 14A must also be increased.

Method used

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Embodiment Construction

[0028] In order to further understand the technology, means and effects adopted by the present invention to achieve the intended purpose, please refer to the following detailed description and drawings related to the present invention. It is believed that the purpose, features and characteristics of the present invention can be understood in depth and specifically, but the attached drawings are only for reference and illustration, and are not intended to limit the present invention.

[0029] The technical content and detailed description of the present invention are described as follows in conjunction with the accompanying drawings.

[0030] See figure 2 , is a block diagram of a constant pressure fluid control system in a preferred embodiment of the present invention. The fluid in the present invention may include liquid (that is, water) or gas, and in the illustrated embodiment, water is used as the fluid for illustration. The constant pressure water supply system include...

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Abstract

The invention relates to a constant pressure fluid control method, which integrates a built-in controller into a frequency converter to control the rotating speed of a pump to achieve the purpose of constant pressure control. The steps of the method include: measuring the pressure feedback value of the output flow of the pump and comparing it with the pressure target value to generate a pressure error value; according to the pressure error value, judging the abnormal handling state, deceleration shutdown standby state and acceleration operation state, In order to maintain a stable water pressure in the system and realize constant pressure water supply. In this way, the present invention can provide detection of different system states, and realize multiple functions such as shutdown standby and delayed restart after shutdown, and can avoid frequent startup and shutdown of the frequency converter. In addition to having the function of constant pressure water supply, it can also save Reduce power consumption, reduce costs and extend the life of this pump.

Description

technical field [0001] The invention relates to a constant pressure fluid control method. Background technique [0002] At present, the main requirements of the constant pressure water supply system on the market are: including how to keep the pressure at the set value, when to stop the detection, when to use water, to detect water leakage and to delay restart after abnormal shutdown. Therefore, most of the special controllers are used to detect the pressure in the pipeline, so that the system adjusts the output frequency of the frequency converter to control the speed of the pump according to the pressure change of the user's water consumption, so as to achieve constant pressure water supply. [0003] See figure 1 , is a block diagram of a known constant pressure water supply system. The constant pressure water supply system includes a pump 10A, a pressure gauge 12A, a controller 14A, and a frequency converter 16A. Wherein, the pump 10A is used to draw an external water ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/00F04D27/00
Inventor 廖世杰黄仁祥
Owner DELTA ELECTRONICS INC