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Sealing rubber material aging simulation online monitoring method

A sealing rubber and rubber technology, which is applied in the analysis of materials, material impedance, measuring devices, etc., can solve the problems of incompatibility of sealing rubber materials, affecting the sealing performance of sealing rubber, complex use environment, etc., and achieve high accuracy of monitoring results, The effect of improving monitoring accuracy and easy implementation

Active Publication Date: 2021-10-08
CHINA NAT ELECTRIC APP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is advanced to a certain extent, but for the sealing rubber material, its use environment is complex, and the stress change cannot completely judge the failure of the rubber, and even the flexible piezoelectric sensor is incompatible with the sealing rubber material itself. Adding the sensor during the process may affect the sealing performance of the sealing rubber, resulting in problems such as seal failure

Method used

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  • Sealing rubber material aging simulation online monitoring method
  • Sealing rubber material aging simulation online monitoring method
  • Sealing rubber material aging simulation online monitoring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The invention discloses an on-line monitoring method for aging simulation of sealing rubber materials, which is used to predict the remaining service life of sealing rubber materials, including:

[0047] Step S1, when the sealing rubber material is put into use, use the same online monitoring sample as the sealing rubber material, clamp the online monitoring sample with a measuring probe and place it in the use environment where the sealing rubber material is located In order to make the on-line monitoring sample synchronously simulate the stress state and environmental state of the sealing rubber material during use, that is, the on-line monitoring sample and the sealing rubber material are aging synchronously;

[0048] Step S2, using an impedance measuring device to apply an alternating current to the on-line monitoring sample to measure the impedance Z of the on-line monitoring sample at the current moment; and, detecting the ambient temperature T of the use environme...

Embodiment approach

[0067] In the step S2, the impedance measuring device applies an alternating current to the online monitoring sample through the measuring probe and measures the impedance Z of the online monitoring sample 7 at the current moment;

[0068] Such as Figure 2 to Figure 5 As shown, the measurement probe includes a first measurement electrode 8, a second measurement electrode 9 and a clamping mechanism, the online monitoring sample 7 is located between the first measurement electrode 8 and the second measurement electrode 9, and the clamp The tightening mechanism can clamp the first measuring electrode 8 and the second measuring electrode 9, and the first measuring electrode 8 and the second measuring electrode 9 are each electrically connected to the impedance measuring device through an electrode wire; wherein, The first measuring electrode 8 and the second measuring electrode 9 are preferably made of brass, silver-plated copper and other metals with strong corrosion resistance ...

Embodiment 3

[0074] On the basis of the above-mentioned embodiment 1 or embodiment 2, this embodiment 3 also adopts the following preferred implementation modes:

[0075] Such as figure 2 and image 3 As shown, the first measuring electrode 8 and the second measuring electrode 9 are shell electrodes with concave cavities, and the online monitoring sample 7 is connected to the two concave cavities; the surface of the concave cavity is coated with Oil-resistant, acid-resistant, alkali-resistant paint, the outer walls of the first measuring electrode 8 and the second measuring electrode 9 are equipped with two connecting pipes 11 communicating with the cavity, and the connecting pipes 11 are equipped with valves 12; and , the cavity of the first measuring electrode 8 and the second measuring electrode 9 is filled with a contact medium through the valve 12, and the contact medium is the medium that the sealing rubber material comes into contact with during use, for example: oil, Acids, lyes...

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Abstract

The invention discloses a sealing rubber material aging simulation online monitoring method, which comprises the following steps: S1, when a sealing rubber material is put into use, adopting an online monitoring sample which is the same as the sealing rubber material, clamping the online monitoring sample by using a measuring probe, and placing the online monitoring sample in a use environment, so that the online monitoring sample synchronously simulates the stress state and the environment state of the sealing rubber material during use; S2, loading alternating current to the online monitoring sample by using an impedance measuring device so as to measure the impedance Z of the online monitoring sample at the current moment, and detecting the environment temperature T and the environment humidity H; and S3, calculating the residual service life t0 of the online monitoring sample at the current moment, namely the residual service life of the sealing rubber material. According to the invention, the method can realize real-time online nondestructive monitoring of the remaining service life of the sealing rubber material without damaging the sealing rubber material, and has the advantages of high monitoring result accuracy, low cost and easy implementation.

Description

technical field [0001] The invention relates to on-line monitoring of service life of materials, in particular to an on-line monitoring method for aging simulation of sealing rubber materials. Background technique [0002] Sealing rubber materials are widely used in the fields of military industry, aerospace, medical equipment, machinery and power generation because of their excellent oil resistance, no permanent deformation under compression, and good mechanical strength. They can not only prevent gas and liquid leakage inside the equipment, It can also act as a buffer between metal fittings to prevent mutual wear. Compared with metal parts, sealing rubber materials are more prone to aging and failure. In the actual use process, because the equipment environment is more complex, light, heat, and corrosive media can change its internal structure, resulting in a series of problems. Failure condition. Once such a failure occurs, it will cause huge economic losses and even th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N27/02
CPCG01N17/00G01N27/02
Inventor 向利陈川汪洋刘浩然揭敢新王俊刘淼然杨阳
Owner CHINA NAT ELECTRIC APP RES INST
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