A sensor module suitable for a conductive multiphase flow wire mesh measurement system

Abstract

The invention discloses a sensor module suitable for a conductive multiphase flow wire mesh measurement system, which comprises a bottom plate, a circuit board placed on the bottom plate, and a top plate placed on the circuit board; the top plate and the circuit board are The bottom plate has the same shape and hole positions; the circuit board includes a substrate, pads, and a wire mesh measurement array for sensing multiphase flow parameters, and the wire mesh measurement array is welded to the substrate through the pads; The circuit board also includes a signal transmitter interface and a signal receiver interface connected to the wire mesh measurement array through the substrate; Slot for receiver interface. Through the modular design, the invention can flexibly select the number of circuit boards to achieve different measurement requirements, and can also be installed in different positions of the flow field through flange connections; the transmitting array and receiving array are independent of each other and directly connected to the corresponding interface, and the signal transmission is reliable Do not interfere with each other.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a sensor module suitable for a conductive multiphase flow wire mesh measurement system. Background technique [0002] With the rapid development of modern industrial technology, the study of multiphase flow has quickly become an important branch of fluid mechanics, and has been widely used in civil fields such as refrigeration, petroleum, energy, and high-tech fields such as aviation and aerospace. The flow law of multiphase flow is of great significance to these fields. In the visual measurement of multiphase flow conditions, process tomography measurement technology is widely used, which is divided into electrical, ultrasonic, ray and optical types. [0003] The measurement system based on the wire mesh sensor is a technology widely researched and applied at home and abroad in recent years. It is a kind of electrical process tomography measurement technology. It uses a double-layer ele...

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Problems solved by technology

However, most of the current technologies focus on the measurement principle and data post-processing, and rarely involve specific sensors. The sensors designed by relevant scholars when using this technology for measurement generally have the following shortcomings: (1) integrated with the experimental section or composed of relatively Composed of multiple parts, it cannot be disassembled to measure the flow field at different positions in the experimental section; (2) only one pair of transmitting / receiving arrays does not support the measurement of axial velocity; (3) the control of the wire mesh spacing and layer spacing is not accurate; ( 4) The transmitter and receiver are connected to the sensor through remote signal transmission, and the signal may be interfered during transmission; (5) It is difficult to maintain after the metal wire is loose or broken by fluid; (6) The transmitting array and receiving array are separated, and the assembly is cumbersome And increase the difficulty of sealing

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