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Pressure resistance type wall pressure sensor

A pressure sensor, wall technology, applied in the direction of measuring blasting force, can solve the problem of non-linear sensitivity, and achieve the effect of low temperature drift performance, wide range and high sensitivity

Active Publication Date: 2015-12-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] (3) Sensitivity nonlinearity, such as ≤1%

Method used

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Embodiment Construction

[0035] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] The invention provides a pressure-resistant wall pressure sensor, see attached figure 1 , including: an insulating sleeve 1, an inner shell 2, a pressure pad 3, an outer shell 4, a core electrode 5, a positioning sleeve 6, an elastic element 7, a piezoelectric element 8 and a plane gasket 9;

[0037] See attached figure 2 , 3 , the inner casing 2 and the outer casing 4 are stepped cylinders with axial through holes, and the inner peripheral surface of the cylinder has a stepped surface; wherein, both ends of the inner casing 2 are processed with external threads, and the outer casing The large diameter section of 4 is processed with internal threads, and the small diameter section is processed with external threads; and the large inner diameter of the inner shell 2 is equal to the small inner diameter of the outer shell 4;

[0038] The insulatin...

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Abstract

The invention discloses a pressure resistance type wall pressure sensor and belongs to the technical field of explosive shock wave overpressure field measurement. The sensor comprises an insulation sleeve, an inner shell, a pressure-bearing pad, an outer shell, a core electrode, a positioning sleeve, an elastic element, a piezoelectric element and a plane gasket. The outer circumferential face of the inner shell is connected with the inner circumferential face of the outer shell. The insulation sleeve is fixed to the inner circumferential face of the small-diameter section of the inner shell. The pressure-bearing pad is arranged on the inner circumferential face of the large-diameter section of the inner shell in a sleeving mode. The positioning sleeve is installed in cooperation with the inner circumferential face of the small-diameter section of the outer shell and the inner circumferential face of the large-diameter section of the inner shell. The core electrode is installed in cooperation with the insulation sleeve, the pressure-bearing pad and an inner surface hole shaft formed by the insulation sleeve. The piezoelectric element and the plane gasket are sequentially arranged on the inner circumferential face of the positioning sleeve in a sleeving mode. The piezoelectric element is located between the core electrode and the plane gasket. The elastic element is fixed to the outer circumferential face of the outer shell. The pressure resistance type wall pressure sensor is used for measuring whether wall shock waves exceed pressure or not or whether shock waves over the ground surface exceed pressure or not.

Description

technical field [0001] The invention belongs to the technical field of explosion shock wave overpressure field measurement, and in particular relates to a pressure-resistant wall pressure sensor. Background technique [0002] When measuring the shock wave overpressure acting on the surface of the component in the air explosion or water explosion shock wave overpressure field or measuring the ground overpressure formed by the shock wave grazing the ground, the wall pressure of the shock wave pressure field must be measured; currently, the wall pressure of the shock wave pressure field is measured The methods mainly include the pressure tank method and the electrical measurement method of the wall pressure sensor. The pressure tank method is used to measure the volume of repeatedly injected liquid water to estimate the deformation of the diaphragm, and then estimate the result of the shock wave overpressure. The measurement is difficult to be accurate and reliable, and it is ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/14
Inventor 吕中杰黄正平黄风雷刘彦段卓平
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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