Hydro-static pressure experiment teaching device and measuring method

Abstract

The invention discloses a hydro-static pressure experiment teaching device and a measuring method. The device comprises a bottom bracket and a device fixing plate, wherein an organic glass web is arranged in the device fixing plate, and airtight water tanks in symmetric distribution, movable water tanks and a pressure measuring pipe fixing system which are connected with each other are mounted onthe organic glass web; the movable water tanks are mounted on upper and lower sliding rails on the device fixing plate in a sliding manner, and a water inlet, an air vent valve and a water drain outlet valve are arranged on each closed water tank; by adjusting the movable water tanks to slide along the upper and lower sliding rails, the positive pressure or negative pressure condition between thesurface pressure P0 of the liquid of the closed water tanks and the atmospheric pressure Pa is realized; by observing the pressure measuring pipe fixing system, two methods are adopted for verifying the hydrostatics basic equation and measuring the pressure or vacuum value of any point in static water; and through the pressure measuring pipe fixing system, the weight gain or density of unknown liquid is measured, and thus the type of the unknown liquid is judged. The experiment device is diversified in function, diversified in testing method, and low in cost, and has a certain promotion value.

Description

technical field [0001] The invention relates to a fluid mechanics experiment teaching device, in particular to a hydrostatic pressure experiment teaching device and a measuring method. Background technique [0002] Fluid mechanics experiment is an important means to reveal the law of fluid motion, which is very important for students to understand knowledge and improve practical ability, and plays an indispensable role in the teaching of this course. The hydrostatic pressure experiment is a mandatory experiment project clearly stipulated in the undergraduate experiment syllabus, and it is carried out in colleges and universities across the country. [0003] Most of the existing hydrostatic pressure experimental devices in major colleges and universities mostly use old traditional desktop devices, which have not been updated for many years. Because only a single test method is used to measure the hydrostatic pressure; and the structural design of the experimental equipment i...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing hydrostatic pressure experimental devices in major colleges and universities mostly use old traditional desktop devices, which have not been updated for many years. Because only a single test method is used to measure the hydrostatic pressure; and the structural design of the experimental equipment is not compact, most of them are placed on the experimental bench with a bench-top structure, and the experimental space is too large, which also causes unnecessary waste of resources to a certain extent

In addition, the production materials of the device and some connecting parts are all metal materials. In the past experience in experimental teaching, such devices are prone to rust when doing fluid experiments, which will accelerate the corrosion and aging of the instrument and cause leakage. , and it is easy to pollute the still water in the device and produce algae

In addition, the rust of the metal can easily lead to the discoloration of the water tank and the water body, which will affect the experimental observation and experimental teaching.

According to market research, the existing hydrostatic pressure experimental teaching device has a high sales price and rough workmanship, and its accuracy and quality cannot meet the requirements of experimental teaching; and compared with traditional instruments, there are almost no innovations, which cannot meet the reform and requirements of teaching. development requirements

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