CN111413043A - Device and method for detecting sealing performance of sealing element - Google Patents
Device and method for detecting sealing performance of sealing element Download PDFInfo
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- CN111413043A CN111413043A CN202010439695.9A CN202010439695A CN111413043A CN 111413043 A CN111413043 A CN 111413043A CN 202010439695 A CN202010439695 A CN 202010439695A CN 111413043 A CN111413043 A CN 111413043A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
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Abstract
A device and a method for detecting the sealing performance of a sealing element comprise a water tank, an inlet and outlet water pipe system, a power supply, a lead, a positive plate of the power supply, a voltage test point and a voltage detection system; the water inlet and outlet pipe system comprises a water outlet pipe and a water inlet pipe; the sealing element to be detected is placed in the water tank, the water outlet end of the water inlet pipe is connected with the water inlet end of the sealing element to be detected, and the water outlet end of the sealing element to be detected is connected with the water inlet end of the water outlet pipe; the positive power plate is arranged inside the liquid inlet end of the water inlet pipe and is electrically connected with the positive electrode of the power supply through a lead; the negative electrode of the power supply is electrically connected with the voltage detection system; the voltage test point is arranged at the bottom of the water tank and is electrically connected with the voltage detection system through a lead. According to the invention, the sealing performance of the plastic part is detected by adopting the conductivity of water, so that the leakage condition of the sealing element to be detected can be rapidly detected; even if the sealing element to be detected has small leakage, the detection system can rapidly judge the leakage condition of the plastic part according to the size of the leaked voltage.
Description
Technical Field
The invention relates to the technical field of detection instruments, in particular to a device and a method for detecting the sealing performance of a sealing element.
Background
At present, the tightness detection method for the sealing element mainly comprises air tightness detection, pressure difference detection, manual observation detection and the like.
For example, in the differential pressure method for detecting micro-leakage and the detection accuracy analysis (Gong from the Gong tree \ Von epitaxy) of the micro-leakage, a physical model and a mathematical model of the leakage are established aiming at the micro-leakage detection problem of the disc type hydraulic brake, a differential pressure type micro-leakage detection principle is provided based on the model, a detection error source is analyzed, and a corresponding error compensation method is provided.
However, the above method requires a long detection time, is not efficient, and is not suitable for rapid detection, and particularly, in the case where the sealing member has only a minute leak, it takes a long time to detect the sealing performance.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides a device and a method for detecting the sealing performance of a sealing element, which can quickly detect the leakage condition of the sealing element to be detected.
(II) technical scheme
In order to solve the problems, the invention provides a device and a method for detecting the sealing performance of a sealing element, which comprises a water tank, an inlet and outlet water pipe system, a power supply, a lead, a power supply positive plate, a voltage test point and a voltage detection system, wherein the water tank is connected with the inlet and outlet water pipe system;
the water inlet and outlet pipe system comprises a water outlet pipe and a water inlet pipe; the sealing element to be detected is placed in the water tank, the water outlet end of the water inlet pipe is connected with the water inlet end of the sealing element to be detected, and the water outlet end of the sealing element to be detected is connected with the water inlet end of the water outlet pipe;
the positive power plate is arranged inside the liquid inlet end of the water inlet pipe and is electrically connected with the positive electrode of the power supply through a lead; the negative electrode of the power supply is electrically connected with the voltage detection system;
the voltage test point is arranged at the bottom of the water tank and is electrically connected with the voltage detection system through a lead
Preferably, the detection method comprises the following steps:
s1: water is filled in the sealing element to be detected; applying a forward voltage inside the sealing element to be detected;
s2: soaking a sealing element to be detected in a water tank, leading the voltage in the water tank to a voltage test point, and detecting the voltage in the water tank by a voltage detection system through the voltage test point;
s3: according to the detection state and the preset voltage limit value of the voltage detection system, obtaining a detection result:
when the voltage detected by the voltage detection system does not change or changes insignificantly, the sealing performance of the sealing element to be detected is judged to be good, and leakage does not occur;
when the voltage detection system detects that the voltage in the water tank is increased and the increased value is smaller than the voltage limit value, judging that the sealing element to be detected has micro leakage, and leading the voltage in the sealing element to be detected into the water tank through the micro leakage water;
and when the voltage increase value detected by the voltage detection system is larger than the voltage limit value, judging that the sealing member to be detected has leakage.
The invention adopts the conductivity of water to detect the sealing performance of the plastic part, and can quickly detect the leakage condition of the sealing element to be detected; even if the sealing element to be detected has small leakage, the detection system can rapidly judge the leakage condition of the plastic part according to the size of the leaked voltage.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for detecting sealing performance of a sealing member according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the device for detecting the sealing performance of a sealing member according to the present invention includes a water tank 3, an inlet and outlet water pipe system, a power supply 6, a lead, a positive power plate 4, a voltage test point 5, and a voltage detection system 7;
the water inlet and outlet pipe system comprises a water outlet pipe 1 and a water inlet pipe 2; the sealing element to be detected is placed in the water tank 3, the water outlet end of the water inlet pipe 2 is connected with the water inlet end of the sealing element to be detected, and the water outlet end of the sealing element to be detected is connected with the water inlet end of the water outlet pipe 1;
the positive power plate 4 is arranged inside the liquid inlet end of the water inlet pipe 2, and the positive power plate 4 is electrically connected with the positive electrode of the power supply 6 through a lead; the negative electrode of the power supply 6 is electrically connected with the voltage detection system 7;
the voltage test point 5 is arranged at the bottom of the water tank, and the voltage test point 5 is electrically connected with the voltage detection system 7 through a lead.
In an alternative embodiment, the seal to be tested is a plastic piece.
According to the invention, the leakage condition of the sealing element to be detected can be rapidly detected.
In an alternative embodiment, a method for testing the sealing performance of a seal is provided, the testing method comprising the steps of:
s1: water is filled in the sealing element to be detected; applying a forward voltage inside the sealing element to be detected;
s2: soaking a sealing element to be detected in a water tank 3, leading the voltage in the water tank 3 to a voltage test point 5, and detecting the voltage in the water tank 3 by a voltage detection system 7 through the voltage test point 5;
s3: according to the detection state and the preset voltage limit value of the voltage detection system 7, obtaining a detection result:
when the voltage detected by the voltage detection system 7 is not changed or the change is not obvious, the sealing performance of the sealing element to be detected is judged to be good, and leakage does not occur;
when the voltage detection system 7 detects that the voltage in the water tank 3 is increased and the increased value is smaller than the voltage limit value, the sealing element to be detected is judged to have micro leakage, and the voltage in the sealing element to be detected is led into the water tank 3 through the micro leakage water;
when the voltage increase value detected by the voltage detection system 7 is larger than the voltage limit value, the leakage of the sealing member to be detected is judged.
In the invention, the sealing performance of the plastic part is detected by adopting the conductivity of water, and even if the sealing element to be detected has small leakage, the detection system can quickly judge the leakage condition of the plastic part according to the size of the leaked voltage.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (2)
1. A device for detecting the sealing performance of a sealing element is characterized by comprising a water tank (3), an inlet and outlet water pipe system, a power supply (6), a lead, a positive power supply plate (4), a voltage test point (5) and a voltage detection system (7);
the water inlet and outlet pipe system comprises a water outlet pipe (1) and a water inlet pipe (2); the sealing element to be detected is placed in the water tank (3), the water outlet end of the water inlet pipe (2) is connected with the water inlet end of the sealing element to be detected, and the water outlet end of the sealing element to be detected is connected with the water inlet end of the water outlet pipe (1);
the positive power plate (4) is arranged inside the liquid inlet end of the water inlet pipe (2), and the positive power plate (4) is electrically connected with the positive electrode of the power supply (6) through a lead; the negative electrode of the power supply (6) is electrically connected with the voltage detection system (7);
the voltage test point (5) is arranged at the bottom of the water tank, and the voltage test point (5) is electrically connected with the voltage detection system (7) through a lead.
2. The device for detecting the sealing performance of the sealing element according to claim 1, wherein the method for detecting the sealing performance of the sealing element is characterized by comprising the following steps:
s1: water is filled in the sealing element to be detected; applying a forward voltage inside the sealing element to be detected;
s2: soaking a sealing element to be detected in a water tank (3), leading the voltage in the water tank (3) to a voltage test point (5), and detecting the voltage in the water tank (3) by a voltage detection system (7) through the voltage test point (5);
s3: according to the detection state and the preset voltage limit value of the voltage detection system (7), obtaining a detection result:
when the voltage detected by the voltage detection system (7) is not changed or the change is not obvious, the sealing performance of the sealing element to be detected is judged to be good, and leakage does not occur;
when the voltage detection system (7) detects that the voltage in the water tank (3) is increased and the increased value is smaller than the voltage limit value, the sealing element to be detected is judged to have micro leakage, and the voltage in the sealing element to be detected is led into the water tank (3) through the micro leakage water;
when the voltage increase value detected by the voltage detection system (7) is larger than the voltage limit value, the leakage of the sealing member to be detected is judged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439695.9A CN111413043A (en) | 2020-05-22 | 2020-05-22 | Device and method for detecting sealing performance of sealing element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439695.9A CN111413043A (en) | 2020-05-22 | 2020-05-22 | Device and method for detecting sealing performance of sealing element |
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| CN111413043A true CN111413043A (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010439695.9A Pending CN111413043A (en) | 2020-05-22 | 2020-05-22 | Device and method for detecting sealing performance of sealing element |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649158A (en) * | 2020-12-30 | 2021-04-13 | 广西汽车集团有限公司 | Sealing performance detection device of sealing strip |
| CN112729703A (en) * | 2020-12-25 | 2021-04-30 | 重庆川仪自动化股份有限公司 | Sealing detection equipment, detection method and system for pipeline type electromagnetic flowmeter electrode |
-
2020
- 2020-05-22 CN CN202010439695.9A patent/CN111413043A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729703A (en) * | 2020-12-25 | 2021-04-30 | 重庆川仪自动化股份有限公司 | Sealing detection equipment, detection method and system for pipeline type electromagnetic flowmeter electrode |
| CN112729703B (en) * | 2020-12-25 | 2022-07-12 | 重庆川仪自动化股份有限公司 | Sealing detection equipment, detection method and system for pipeline type electromagnetic flowmeter electrode |
| CN112649158A (en) * | 2020-12-30 | 2021-04-13 | 广西汽车集团有限公司 | Sealing performance detection device of sealing strip |
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