Method for detecting diesel-engine water-pump flow and preventing from overloading, and apparatus thereof

Abstract

The invention relates to water pump flow detection and overload prevention technology, more specifically a method and device for diesel engine water pump flow detection and overload prevention. The method is to measure the two parameters of diesel engine water pump speed and pump outlet lift , and these two parameters are transmitted to the control computer, and the control computer calculates the real-time flow of the diesel engine water pump according to these two parameters, and judges whether it is overloaded; the device for realizing the method is mainly composed of a control computer, a speed sensor, and a pressure sensor , the speed sensor is installed on the main shaft of the diesel engine, the pressure sensor is installed at the outlet of the diesel engine water pump, the speed sensor and the pressure sensor are connected with the control computer through a data connection; the invention has high measurement accuracy, accurate early warning, wide application range, simple structure, and small volume It is small, easy to install, and low in cost, and can be widely used in the metering and protection of low-cost diesel engine water pumps and other water supply systems.

Description

technical field [0001] The invention relates to water pump flow detection and overload prevention technology, more specifically, a method and device for diesel engine water pump flow detection and overload prevention. technical background [0002] To meet the needs of modern water supply, production, irrigation and fire protection, a new type of water pump powered by a diesel engine has been produced by many domestic and foreign manufacturers. However, there is a difficult problem in the production of diesel engine water pumps that has been puzzling the majority of designers and users: how to prevent the diesel engine water pump from being damaged due to overload. [0003] Diesel engine water pumps are different from water pumps driven by electric motors. Electric water pumps can easily be equipped with over-current protection components on their power supply circuits in design. The system is protected. [0004] In the prior art, there are two conventional methods to preve...

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Problems solved by technology

Its disadvantage is that it is very inconvenient to install. In order to measure accurate real-time flow, it is necessary to leave a 2-meter straight pipe before and after the flowmeter; it is expensive, and the price increases with the increase of the output caliber

[0007] The above two methods all have the disadvantages of high cost and difficult installation, which are not conducive to the popularization and use of modern water supply, production, irrigation and non-electrically driven fire-fighting equipment.

Especially in the case that fire-fighting equipment needs to be installed quickly and in large quantities, the cost and difficulty of installation are greatly increased, which hinders the popularization and use of fire-fighting equipment

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