Even pressure sleeve for measurement of static pressure of pipeline fracture surface

Abstract

The invention provides an even pressure sleeve for measurement of static pressure of a pipeline fracture surface, and belongs to the technical field of engineering fluid mechanics measurement. The even pressure sleeve is composed of a round-ring-shaped top plate, a bottom plate and an outer side plate in an encircling mode on the outer wall of a to-be-measured pipeline, the top plate and the bottom plate are made of transparent materials, the outer side plate is connected with the outer round edge of the top plate and the outer round edge of the bottom plate, the inner round edge of the top plate and the inner round edge of the bottom plate are connected on the outer wall of the to-be-measured pipeline in a tightly abutting mode, eight pressure taking hoes are evenly formed in the same fracture surface, corresponding to the even pressure sleeve, of the wall of the to-be-measured pipeline, and an inner cavity of the even pressure sleeve is communicated with a to-be-measured fracture surface of the to-be-measured pipeline through the pressure taking holes. An exhaust vent with an exhaust valve is formed in the top plate of the even pressure sleeve, and a static pressure exporting hole is formed in the bottom plate of the even pressure sleeve. The even pressure sleeve for measurement of the static pressure of the pipeline fracture surface is reasonable and simple in structure, novel and exquisite in conception, and easy to achieve. Compared with a common pressure measurement device, reliability and accuracy of pipeline static pressure measurement are obviously improved. Due to the fact that the even pressure sleeve is made of the transparent materials, air exhaust conditions in the even pressure sleeve can be conveniently observed.

Description

technical field [0001] The invention relates to a water flow characteristic measuring device, in particular to the cross-sectional static pressure measurement of a pipeline in a pump device, and belongs to the technical field of engineering fluid mechanics measurement. Background technique [0002] In the research of the hydraulic performance of the pump device model pipeline system, the static pressure of the pipeline section needs to be measured, and the accuracy of the measurement has a great influence on the research results. Since the static pressure distribution of the measured section is not uniform, in order to improve the accuracy of the measurement, the traditional method is to set a circular equal pressure ring made of a thin metal circular tube outside the measured section; On the inner side of the ring, 4 pressure-taking tubes are evenly arranged at intervals of 90° to communicate with the measured section; a static pressure export hole is opened on the uniform ...

AI Technical Summary

Problems solved by technology

Because the equalizing ring is long and thin, the distance between the pressure-taking holes is far away, the effect of equalizing pressure is weak, and the effect of equalizing pressure is poor.

At the same time, since the equal pressure ring is placed horizontally, there is no highest point, and it is difficult to discharge all the air contained in the equal pressure ring.

The above problems have greatly affected the accuracy of the static pressure measurement of the pipeline section

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