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Phase state detector and installation method thereof, and two-phase flow interface parameter measurement system

A technology of detectors and detection devices, applied in the directions of measuring devices, instruments, connecting components, etc., to achieve high time resolution, accurate positioning, accurate and stable measurement effects

Active Publication Date: 2020-11-06
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a phase state detector to realize the effective measurement of the interface parameters of the two-phase flow whose flow field changes rapidly under transient conditions, and to solve the problem that the traditional probe measurement method is no longer suitable for transient conditions. Measurement of Interface Parameters in Two-Phase Flow

Method used

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  • Phase state detector and installation method thereof, and two-phase flow interface parameter measurement system
  • Phase state detector and installation method thereof, and two-phase flow interface parameter measurement system
  • Phase state detector and installation method thereof, and two-phase flow interface parameter measurement system

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Embodiment 1

[0059] In this embodiment, a phase detector for measuring the phase distribution signal of the cross-section of the flow channel under transient working conditions is provided.

[0060] Such as Figure 1-Figure 8 As shown, the phase detector includes a substrate 1, and the center of the substrate 1 is provided with a flow channel hole 5 passing through the upper and lower surfaces of the substrate 1. The axial direction of the flow channel hole 5 is a vertical direction, and the flow channel There are three electrode wire layers in the hole 5, namely the upper electrode wire layer, the middle electrode wire layer and the lower electrode wire layer, and the planes where the electrode wire layers are located are perpendicular to the central axis of the flow channel hole 5. Each electrode wire layer includes a plurality of electrode wires arranged in parallel and located in the same plane, and the electrode wires in each electrode wire layer are evenly arranged, that is, all elec...

Embodiment 2

[0087] In this embodiment, a measurement system for the cross-section full-field interface parameters in two-phase flow experiments under transient conditions is provided to ensure real-time, accurate and stable measurement of cross-section full-field interface parameters under transient conditions. The in-depth study of two-phase flow under working conditions provides data support. Such as Figure 9 As shown, the two-phase flow interface parameter measurement system includes an excitation signal control unit, a phase detection device and a receiving signal processing unit, and the phase detection device is the phase detector in Embodiment 1; the middle part of the phase detector The electrode wires of the electrode wire layer are used as excitation electrode wires 6 for transmitting excitation signals in the measurement of two-phase flow interface parameters, and the electrode wires of the upper electrode wire layer and the lower electrode wire layer are used as receiving ele...

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Abstract

The invention discloses a phase state detector and its installation method, a two-phase flow interface parameter measurement system and method. The phase state detector includes a base plate, and a flow channel hole penetrating the upper and lower surfaces of the base plate is opened in the center of the base plate. There are at least two electrode wire layers, each electrode wire layer includes a plurality of electrode wires arranged in parallel and located in the same plane, and the electrode wires of two adjacent electrode wire layers are perpendicular to each other; the plane where the electrode wire layers are located is perpendicular to the flow The central axis of the hole. The electrode wires of at least one electrode wire layer are used as excitation electrode wires, and the electrode wires of at least one electrode wire layer adjacent to the excitation electrode wires are used as receiving electrode wires; multiple excitation electrode wires and receiving electrode wires form many detection points in space , with high spatial resolution, to realize the instantaneous measurement of the phase distribution of the cross-section of the flow channel, and to achieve effective measurement of the two-phase flow at a higher flow rate, and to support the measurement of the interface parameters of the two-phase flow under transient conditions.

Description

technical field [0001] The invention relates to the field of two-phase flow experiment testing, in particular to a phase state detector, an installation method thereof, and a two-phase flow interface parameter measurement system. Background technique [0002] Gas-liquid two-phase flow is common in reactor systems. In-depth research on the characteristics and mechanism of two-phase flow has important guiding significance for thermal safety analysis of reactors, improving system operation efficiency, and proposing accident mitigation measures. Obtaining the full-field interface parameters on the cross-section of the flow channel is a prerequisite for in-depth research on two-phase flow. Important interface parameters include void fraction, interface area concentration, bubble size, and bubble velocity. [0003] So far, the most widely used measurement method is the probe. The probe can only measure the same point in the flow field at the same time. In order to obtain the distr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02F16B11/00
CPCF16B11/006G01D21/02
Inventor 余诗墨龚随军张君毅袁德文许爱威闫晓昝元锋
Owner NUCLEAR POWER INSTITUTE OF CHINA
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