Multiple acoustic circuit time difference type supersonic flowmeter

An ultrasonic and multi-sound path technology, applied in the measurement of flow/mass flow, liquid/fluid solid measurement, measurement devices, etc., can solve the problems of large fluctuation of measurement data, reduce the dynamic response performance of flowmeter, etc., to improve the measurement accuracy Effect

Inactive Publication Date: 2008-02-06
南京申瑞电气系统控制有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, it can be found through observation that even if up to 8 sound channels are used, the measurement data still fluctuates greatly, and it takes a long time to average to stabilize, and the long time average will reduce the dynamic response performance of the flowmeter

Method used

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  • Multiple acoustic circuit time difference type supersonic flowmeter
  • Multiple acoustic circuit time difference type supersonic flowmeter

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Embodiment Construction

[0012] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention, and any similar structures and similar changes of the present invention should be included in the protection scope of the present invention.

[0013] As shown in Figure 1, a multi-channel time-difference ultrasonic flowmeter includes an upstream transducer, a downstream transducer, a transmitter, a receiver, a control unit, and a display unit, wherein the upstream transducer and the downstream transducer The transducers are respectively set in the upstream and downstream channels of each large-diameter flow channel, and are connected with the transmitter and the receiver. The transmitter and the receiver are connected with the control unit and the display unit in turn to realize control. Each upstream transducer and downstream transducer The transmitters are all conne...

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Abstract

The present invention discloses a multi-acoustic circuit time difference type ultrasonic flowmeter, which comprises an upstream transducer, a downstream transducer, a transmitter, a receiver, and a control unit, wherein each upstream transducer and each downstream transducer are all connected with an independent transmitter and an independent receiver, and the transmitter and the receiver are connected in parallel to the control unit and are controlled by the control unit. The present invention is used for monitoring a large sized flow passage, a concurrent high voltage impulse transmitter microporocessor and a control circuit are used to measure a plurality of acoustic circuits, the different transmitter is chosen through a coding bus line, to operate the different acoustic circuits and the forward direction or the reverse direction in the different acoustic circuits. Namely the forward direction or the reverse direction of each passage has the respective transmitter and the corresponding receiving circuit. A relay is not used when the transmitters switch over, thus the switching time between the transmitters is very short; in this way, a multiple impulse technology can be adopted to measure each passage time after time, thereby the precision to measure the propagation time of the ultrasonic is improved.

Description

1. Technical field [0001] The invention relates to a multi-acoustic time-difference ultrasonic flowmeter for monitoring water flow in large-caliber flow channels in hydropower stations or large-scale water transmission and water supply projects. It adopts a high-precision, ultrasonic multi-pulse measurement technology to effectively increase the flow rate. measurement accuracy. 2. Background technology [0002] In my country's large-scale hydropower stations or large-scale water transmission and water supply projects, multi-sound path time difference ultrasonic flowmeters that can monitor the water flow in large flow channels are needed. At present, the existing multi-sound path time-difference ultrasonic flowmeters at home and abroad all use multiple sound paths (channels) to transmit and share a transmitter, and the transmission and reception signals of multiple sound paths (channels) are transmitted through relays. Switching, because the closing or opening of the relay r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66
Inventor 徐春荣赵学东
Owner 南京申瑞电气系统控制有限公司
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