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A device for measuring the effective area of ​​the outer cavity of a bellows

A technology of effective area and measuring device, which is applied in the field of bellows effective area measuring equipment, can solve the problems of unevenness of the fixed plate, large error, air leakage, etc., and achieve the effect of improving accuracy, improving stability, and ensuring sealing performance

Active Publication Date: 2022-04-19
六安一六八航空航天精密器件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional bellows effective area measuring device can only use the formula to obtain a fixed value of the effective area. However, during the use of the bellows, with the change of the pressure, the value of the effective area is also changing. Therefore, the traditional bellows is used for The measuring device for the effective area of ​​the tube is less accurate
[0004] The utility model patent with the notification number CN209656264U discloses a testing device for the effective area of ​​the bellows. The device can quickly fix and detect the bellows through the arrangement of piston oil pumps, guide posts, pads, nuts and other structures; but the device When in use, it is necessary to manually turn the nut to lock the fixing plate. The error is large, which may lead to unevenness on both sides of the fixing plate, making it impossible to fit the surface of the pad and the top surface of the bellows, and even appear during the test. Air leakage affects the measurement accuracy of the effective area of ​​the bellows

Method used

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  • A device for measuring the effective area of ​​the outer cavity of a bellows
  • A device for measuring the effective area of ​​the outer cavity of a bellows
  • A device for measuring the effective area of ​​the outer cavity of a bellows

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Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 1-4 As shown, a device for measuring the effective area of ​​the outer cavity of a bellows includes a working platform 1, a first passing pipe seat 2 and a second passing pipe seat 3 are fixedly installed on the top of the working platform 1, and the first passing pipe seat 2 A mounting frame 36 is fixedly installed between the top surface of the second pipe seat 3 and the side of the cover body 12, and the mounting frame 36 is used to strengthen the gap between the first pipe seat 2, the second pipe seat 3 and the cover body 12. connection to improve the stability of the device when it is working, the front of the first tube socket 2 is provided with a digital display 4, and the digital display 4 is used to display the force signal value output by the force sensor 11 in real time, which is convenient for checking the force signal value For the record, a pipe groove 5 is provided between the two sides of the first pipe seat 2 and the second pipe seat 3, ...

Embodiment 2

[0048] Such as Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that three evenly distributed springs 37 are fixedly installed on the bottom of the sealing plate 20, and the bottoms of the three springs 37 are all fixedly connected to the top surface of the pressing plate 34, and the pressing plate Two symmetrical telescopic rods 38 are also installed between 34 and the sealing plate 20, and the two telescopic rods 38 are arranged alternately with the three springs 37;

[0049] In this embodiment, by replacing the three connecting frames 33 with three springs 37, the sealing plate 20 can be elastically pressed against the top seat 17. Before the groove is matched and sealed, the bottom surface of the pressing plate 34 can be in contact with the inner bottom wall of the groove 32, and as the height of the sealing plate 20 continues to drop, the reverse force generated by the contraction of the spring 37 acts on the pressing plate 34, so that the pr...

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Abstract

The invention discloses a device for measuring the effective area of ​​the outer cavity of a bellows, which includes a working platform, a first passing pipe seat and a second passing pipe seat are fixedly installed on the top of the working platform, and the front of the first passing pipe seat is provided with A digital display screen, a pressure pump is fixedly installed on the top of the working platform, the output end of the pressure pump is fixedly connected with a connecting pipe, and the end of the connecting pipe far away from the pressure pump is fixedly connected with an installation pipe through a joint, and the outer surface of the installation pipe The limit sleeve is fixedly installed, the top of the limit sleeve is provided with a precision pressure gauge, the side of the second passage seat is provided with a force sensor, and the top of the first passage seat and the second passage seat is fixedly installed with a cover body. The present invention can quickly and accurately measure the effective area of ​​the bellows, and can obtain the corresponding effective area values ​​of the bellows when used in different pressure environments according to two sets of recorded data and calculation formulas.

Description

technical field [0001] The invention relates to the technical field of bellows effective area measuring equipment, in particular to a bellows outer cavity effective area measuring device. Background technique [0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the direction of folding and expansion. Bellows are widely used in instruments and meters. The effective area is one of the basic performance parameters of bellows, which characterizes the bellows. The ability to concentrate force, the effective area is an important parameter when the bellows is used to turn the pressure into a concentrated force output. [0003] The traditional bellows effective area measuring device can only use the formula to obtain a fixed value of the effective area. However, during the use of the bellows, with the change of the pressure, the value of the effective area is also changing. Therefore, the traditional bellows is used for The me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01B21/28
CPCG01M13/00G01B21/28
Inventor 吴岩李辉孙古武
Owner 六安一六八航空航天精密器件有限公司