An Integrated Measurement Method for General Fan Operating Parameters

Abstract

The invention belongs to the technical field of fans and aims at providing a general fan operation parameter integration measuring method. The method includes three steps: obtaining temperature and pressure signals of air in an inlet and an outlet of a fan through measurement by a temperature sensor and a pressure sensor; calculating the air flow Q at the position of the outlet of the fan; measuring the section area of the section of the inlet and the outlet of the fan and combining the read number of an electric meter. The method has the advantage that only the pressure sensor and the temperature sensor are utilized to collect the pressure and temperature data of the air in the inlet and the outlet of the fan, and a mathematical model is utilized to calculate the air flow at the inlet of the fan. The method fundamentally removes the traditional way that an insertion type flow meter is utilized to measure the flow (flowing speed) of the fan, and is simple in project construction, high in reliability and capable of achieving real-time online measurement.

Description

technical field [0001] The invention belongs to the technical field of fans, in particular to an integrated measurement method for operating parameters of general fans. Background technique [0002] According to statistics, at present, the electric energy consumed by the operation of various fans in my country's process industry accounts for about one-third of the total power generation in the country. A particularly important reason is that the unreasonable design selection causes most fans to actually run in the state of large horse-drawn carts. In addition, due to changes in production and technology, it is often necessary to use dampers, hydraulic couplers or valves to Regulate the flow of gas, resulting in a large amount of power loss in dampers, hydraulic couplings or valves. Therefore, real-time grasp of fan operating parameters is of great significance to the energy saving and consumption reduction of the fan system. [0003] At present, the measurement of fan syst...

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Problems solved by technology

[0004] First of all, most of the existing products on the market for insertion flow meters are usually sensors for industrial air measurement with large flow, high flow rate, and high pressure such as natural gas and steam. Mobile, unable to adapt to the use requirements of general fans in various process industries;

[0005] In addition, the inlet and outlet pipes of general fan systems in the process industry are usually sealed, and the air in the pipes usually has a certain temperature and pressure. The premise of using Pitot tubes or other insertion flowmeters is that holes must be opened in the pipes , both in terms of safety and operability, the implementation is very complicated, so the development of an integrated measurement method for general fan operating parameters can fundamentally solve the problems of single traditional measurement means, complex measurement process and unreliable measurement results.

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