Pressure sensor mounting structure under background condition of high-impact acceleration
A pressure sensor and acceleration technology, applied in the direction of measuring fluid pressure, instruments, measuring devices, etc., can solve the problems of narrow technical field and no widespread concern in the field of pressure testing, so as to improve test accuracy, suppress the acceleration effect of pressure sensors, and improve The effect of wave impedance difference
Active Publication Date: 2019-08-09
XIAN MODERN CHEM RES INST
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Problems solved by technology
[0005] Due to the strong vibration of the surface pressure load test condition of the plate structure usually occurs when the box structure explodes and the plate / frame structure explodes at close range, the technical field is relatively narrow and has not attracted widespread attention in the field of pressure testing. see effective solutions
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[0025] Such as figure 1 As shown, a pressure sensor installation structure under high impact acceleration background conditions given in this embodiment includes an inner mounting seat 1, a vibration isolator 2, an outer mounting seat 3, a compression screw 4, and a fixing screw 5, wherein:
[0026] The inner mounting seat 1 is a hollow body connected to a circular platform, and its length is 0.3-0.5mm shorter than the length from the sensitive surface of the pressure sensor to the starting position of the installation thread of the test line at the end to ensure the installation margin. The length of the circular platform accounts for Two-thirds, the angle between the bus bar of the round table and the rotating shaft is 10-30°, two small blind holes are opened at the large end of the round table as the installation bayonet 1-1, the small end of the round table is connected with the cylinder, and the parts of the round table are installed outwards in sequence The vibration iso...
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The invention discloses a pressure sensor mounting structure under the background condition of high-impact acceleration. The pressure sensor mounting structure under the background condition of the high-impact acceleration comprises an internal mounting seat 1, a vibration isolator 2, an external mounting seat 3, a compressing screw 4 and a fixed screw 5. The internal mounting seat 1 is variable cross-section cylinder, a sensor mounting hole is formed in the internal mounting seat 1, the vibration isolator 2 and the external mounting seat 3 are sequentially mounted outwards on the fixed screw5, the vibration isolator 2, the external mounting seat 3 and the fixed screw 5 are fixed integrally through the constraint of the compressing screw 4, and the external mounting seat 3 is connected and fixed to a measured structure through the fixed screw 5. The pressure sensor mounting structure under the background condition of the high-impact acceleration has the advantages that the vibration isolator 2 is a funneled thin barrel, contact area of the internal mounting seat 1 and the external mounting seat 3 is increased, the vibration propagation distance is increased under the condition ofequal gap width, the acceleration transmitted by the external mounting seat 3 can be decomposed to the tangent direction and the normal of the vibration isolator 2, vibration energy transmitted by theexternal mounting seat is effectively absorbed and decomposed, the acceleration parasitic effect of an internal pressure sensor of the internal mounting seat 1 is restrained, and a more accurate pressure load is obtained.
Description
[0001] The invention belongs to the technical field of damage testing, and in particular relates to a sensor installation structure, in particular to a pressure sensor installation structure under the background condition of high impact acceleration. Background technique [0002] The piezoelectric sensor has an acceleration effect, that is, when the pressure diaphragm of the pressure sensor is subjected to acceleration, the diaphragm deforms and squeezes the piezoelectric chip under the action of inertial force, and the sensor outputs a charge signal, which can be called an acceleration parasitic signal. Therefore, the signal output by the pressure sensor includes both the pressure signal and the acceleration spurious signal. In order to obtain the pressure load accurately, it is necessary to eliminate the acceleration spurious signal as much as possible. There are two main elimination methods, one is the signal processing method, that is, according to the acceleration respons...
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IPC IPC(8): G01L19/02G01L23/26
CPCG01L19/02G01L23/26
Inventor 张玉磊苏健军王安勇胡东常李尚青
Owner XIAN MODERN CHEM RES INST