Portable fluid flow velocity measuring device

Abstract

The portable fluid flow velocity measuring device comprises a differential pressure transmitter and an integrating instrument, the signal output end of the differential pressure transmitter is connected with the signal input end of the integrating instrument through a signal cable, the differential pressure transmitter is provided with a transmitter diaphragm capsule, and clamping blocks are installed on the two sides of the transmitter diaphragm capsule through bolts. The clamping block on one side is internally provided with a total pressure tapping hole which is communicated with the transmitter diaphragm capsule and is through up and down, the clamping block on the other side is internally provided with a static pressure tapping hole which is communicated with the transmitter diaphragm capsule and is through up and down, and the upper and lower orifices of the total pressure tapping hole are respectively provided with a cylindrical total pressure tapping element; cylindrical static pressure tapping elements are respectively arranged at the upper and lower orifices of the static pressure tapping hole; the device further comprises an intubation tube connected with the differential pressure transmitter, and the signal cable penetrates through the intubation tube. The flow velocity of water in ditches and rivers can be measured at any time after the device is applied.

Description

Technical field [0001] The present invention relates to a portable fluid flow rate measuring device. Background technique [0002] The fluid flow rate measuring apparatus in the prior art, including the differential pressure transmitter and the integrated calculator, the signal output of the differential pressure transmitter is connected to the signal input terminal of the calculator by the signal cable, and the differential pressure transmitter has The transmitter film cassette, on both sides of the transmitter film cassette through the bolt, and the side of the clip has a vertical penetrating pressure hole that communicates with the transmitter film cartridge, on the other side. There is a static pressing hole that is communicated with the transmitter membrane cartridge in the clip. [0003] The fluid flow rate measuring apparatus in the prior art is typically used to measure the flow rate of fluid in the closed conduit, and the differential pressure transmitter is placed outsi...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned fluid flow rate measurement device in the prior art needs to be connected with the full pressure pressure tube and the static pressure tube to form a fixed connection relationship with the pipeline, and when the flow rate of the fluid in the pipeline is low, the total pressure pressure tube and the static pressure tube The pressure signal value extracted by the static pressure guide tube is low, and it is not easy to be collected by the differential pressure transmitter, which will eventually affect the measurement accuracy

[0005] Sometimes, it is necessary to measure the flow velocity of water in some ditches and river courses. In the prior art, there is no measuring device specially used for measuring the flow velocity of water in the above-mentioned ditches and river courses.

Images