CN113465845A - Dynamic seal wear failure real-time detection method - Google Patents
Dynamic seal wear failure real-time detection method Download PDFInfo
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- CN113465845A CN113465845A CN202110685939.6A CN202110685939A CN113465845A CN 113465845 A CN113465845 A CN 113465845A CN 202110685939 A CN202110685939 A CN 202110685939A CN 113465845 A CN113465845 A CN 113465845A
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- sealing element
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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
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
Abstract
The invention discloses a dynamic seal wear failure real-time detection method, which comprises the following steps: (1) determining the installation position and size of a sealing element to be detected and the shape and size of the sealing element; (2) preparing a sealing element (hereinafter referred to as conductive element) containing conductive filler, and coating an insulating layer (hereinafter referred to as insulating element) on a sufficient number of conductive elements; (3) installing a conductive member, and testing the resistance value of a loop consisting of the shell, the sealing member and the moving shaft by using an electric signal detection module; (4) taking out the conductive part, correctly installing the insulating part, and testing the resistance value of the loop; (5) installing and fixing an electric signal detection module and a data transmission module, and setting an alarm threshold; (6) the detection signal is sent to the background server through the data transmission module. The invention provides a dynamic seal wear failure real-time detection method, which realizes real-time, accurate and remote seal wear failure detection.
Description
Technical Field
The invention relates to the field of hydraulic sealing, in particular to a dynamic seal wear failure detection method.
Background
The dynamic seal includes a reciprocating seal and a rotary seal, and is mainly used for preventing fluid or solid particles from leaking from an adjacent joint surface and preventing external impurities such as dust, moisture and the like from invading parts or measures inside the machine equipment. The dynamic seal wear out became invalid and the equipment trouble that leads to took place occasionally, however, the sealing member is installed inside equipment usually, can't carry out real-time, accurate detection to its wearing and tearing state, often can only judge the sealing member trouble through observing the leakage phenomenon, change the sealing member this moment will lead to shutting down, influence work efficiency, bring potential safety hazard etc..
Currently, regarding seal leakage detection, a leakage state is indirectly inferred mainly based on a signal processing method, and then wear failure is judged, so that a plurality of sensors are additionally arranged, for example, pressure and temperature sensors are used for collecting state information of equipment, fusion judgment is carried out on the sensor information, an internal leakage state is inferred, and then whether leakage is caused by seal failure is judged.
Disclosure of Invention
In order to solve the problems, the invention provides a dynamic seal wear failure real-time detection method, which realizes real-time and accurate seal wear failure detection.
The purpose of the invention is realized by the following technical scheme: a dynamic seal wear failure real-time detection method mainly comprises the following steps:
(1) determining the installation position and size of a sealing element to be detected and the shape of the sealing element, and preparing a conductive sealing element which has the same shape and size as the sealing element to be detected and contains conductive filler;
(2) installing a conductive sealing element at a position to be detected, and detecting an electric signal of a loop of the shell-sealing element-moving shaft;
(3) and (3) taking out the conductive sealing element, wrapping an insulating layer outside the conductive sealing element to form an insulating sealing element, correctly installing the insulating sealing element at the position to be detected, detecting the electric signal of the loop in the step (2) again, setting an alarm threshold value, and when the variation amplitude of the electric signal in the loop exceeds the alarm threshold value, proving that the insulating layer wrapped outside the conductive sealing element is damaged and the sealing fails to alarm.
Further, the inner core of the conductive sealing element is made of conductive rubber: and uniformly adding conductive particles or adding conductive carbon black for filling in the rubber.
Further, the conductive particles include silver-plated glass, silver-plated aluminum, and silver.
Further, the conductive sealing element can also adopt a normal rubber element, a metal ring is installed on an inner core of the conductive sealing element, the thickness of the metal ring from the edge of the sealing element is an abrasion allowance, when the sealing element is abraded and the metal ring is exposed, the sealing element is regarded as failed, and at the moment, an electric signal changes, and an early warning signal is sent.
Further, the insulating layer in the insulating sealing element only covers the relative movement position of the sealing element, and the thickness is the allowable abrasion amount of the sealing element.
Further, the electric signal detected in step (2) is a resistance value or a voltage value.
Furthermore, a loop of the shell, the sealing element and the moving shaft is connected with a data transmission module, and the data transmission module transmits electric signal detection data in the loop to a background server through 5G wireless transmission. And remote data transmission is realized through a public network, and online monitoring and remote monitoring of the abrasion state of the sealing element are completed by adopting cloud computing and cloud storage.
The invention has the beneficial effects that:
(1) the real-time and accurate detection of the abrasion failure of the sealing element is realized.
(2) The data transmission module can realize on-line monitoring and remote monitoring.
(3) The operation cost is optimized, the worn and failed sealing element can be found and replaced in time, and leakage damage and related cost caused by too late replacement of the sealing element are avoided.
Drawings
FIG. 1 is a schematic diagram of the method.
FIG. 2 is a general form of dynamic seal suitable for use with the present invention, including but not limited to: in fig. 2, (a) a reciprocating seal and (b) a rotary seal.
Fig. 3 is a schematic diagram of the positions of the insulation layers corresponding to the reciprocating seal and the rotary seal in fig. 2.
Fig. 4 is a schematic illustration of the position of the inner core of the reciprocating sealed conductive seal.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the present invention will be briefly described below by using embodiments, and it is obvious that the following description is only one embodiment of the present invention, and for those skilled in the art, other technical solutions can be obtained according to the embodiments without inventive labor, and also fall within the disclosure of the present invention.
The invention provides a dynamic seal wear failure real-time detection method, which realizes real-time, accurate and remote seal wear failure detection. The method mainly comprises the following steps: (1) determining the installation position and size of a sealing element to be detected and the shape and size of the sealing element; (2) preparing a sealing element (hereinafter referred to as conductive element) containing conductive filler, and coating an insulating layer (hereinafter referred to as insulating element) outside enough conductive sealing elements; (3) installing a conductive piece, and testing the resistance value or the voltage value of a loop consisting of the shell, the sealing piece and the moving shaft by using an electric signal detection module, wherein the detection module can purchase mature products and is not detailed; (4) taking out the conductive part, correctly installing the insulating part, and testing the resistance value of the loop; (5) installing and fixing an electric signal detection module and a data transmission module, and setting an alarm threshold; (6) the detection signal is sent to the background server through the data transmission module.
In the step (2), the insulating layer in the insulating part only covers the relative movement position of the sealing part, the thickness is the allowable abrasion loss of the sealing part, and when the insulating layer of the sealing part is not abraded and fails and the inner core of the conductive sealing part is not exposed, the sealing part can be regarded as an insulator; when the insulating layer of the sealing element is worn and fails and the inner core of the conductive sealing element is exposed, the resistance value of the sealing element is reduced. The inner core of the conductive sealing element can be made of conductive rubber: for example, the conductive particles such as silver-plated glass, silver-plated aluminum, silver and the like are uniformly added into the rubber or the conductive carbon black is added for filling, and the conductive particles are contacted by pressure, so that good conductive performance is achieved. The conductive rubber can conduct electricity well only by a certain compression force, so that the structural design must ensure proper pressure and no overpressure, which is suitable for the situation that the installation state of the sealing element needs to bear certain extrusion and can exert the characteristics of the conductive rubber.
Fig. 2 shows a common form of dynamic seal suitable for the present invention, and the seal is installed as shown in the figure, wherein (a) in fig. 2 is a reciprocating seal form, (b) in fig. 2 is a rotary seal form, the circle position in fig. 3 is a schematic diagram of the position of an insulating layer, (a) in fig. 3 is the position of the insulating layer of the reciprocating seal, and (b) in fig. 3 is the position of a rotary seal lip.
In the step (2), the conductive sealing element is made of normal rubber, the metal ring is installed on the inner core of the conductive sealing element and filled in the insulated sealing element, and after the sealing element is worn, the metal ring is exposed to cause signal change, so that a filling form is provided, as shown in fig. 4. The specific implementation process comprises the following steps: a seal made as a bare metal ring is installed in the sealing position in step (2), and an alarm threshold is measured in step (3).
In the step (3), the resistance value of the conductive part in the equipment is tested to determine the alarm threshold, but different test circuits can be matched to measure other signals.
And (4) testing the resistance value of the insulating part in the equipment in the step (4), so as to confirm that the insulating layer is complete and effective.
In the step (5), when the insulating layer of the sealing element is worn and the inner core of the conductive sealing element is exposed, the resistance value of the sealing element is reduced, and the signal obtained by the test of the electric signal detection module is obviously changed, so that the wear failure of the sealing element can be judged,
in the step (6), the data transmission module adopts a 5G wireless transmission module, and the data is sent to the background server through the 5G wireless transmission module. And remote data transmission is realized through a public network, and judgment of a detection result is completed by adopting cloud computing and cloud storage.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The particular features, structures, materials, or characteristics described in this disclosure may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A dynamic seal wear failure real-time detection method is characterized by mainly comprising the following steps:
(1) determining the installation position and size of a sealing element to be detected and the shape of the sealing element, and preparing a conductive sealing element which has the same shape and size as the sealing element to be detected and contains conductive filler;
(2) installing a conductive sealing element at a position to be detected, and detecting an electric signal of a loop of the shell-sealing element-moving shaft;
(3) and (3) taking out the conductive sealing element, wrapping an insulating layer outside the conductive sealing element to form an insulating sealing element, correctly installing the insulating sealing element at the position to be detected, detecting the electric signal of the loop in the step (2) again, setting an alarm threshold value, and when the variation amplitude of the electric signal in the loop exceeds the alarm threshold value, proving that the insulating layer wrapped outside the conductive sealing element is damaged and the sealing fails to alarm.
2. The dynamic seal wear failure real-time detection method of claim 1, wherein an inner core of the conductive sealing element is made of conductive rubber: and uniformly adding conductive particles or adding conductive carbon black for filling in the rubber.
3. The method for real-time detection of dynamic seal wear failure according to claim 2, wherein the conductive particles comprise silver-plated glass, silver-plated aluminum, and silver.
4. The dynamic seal wear failure real-time detection method according to claim 1, wherein the conductive sealing element can also adopt a normal rubber element, a metal ring is installed on an inner core of the conductive sealing element, the thickness of the metal ring from the edge of the sealing element is a wear allowance, when the sealing element is worn and the metal ring is exposed, the sealing element is regarded as failed, and at the moment, an electric signal changes, and an early warning signal is sent.
5. The method for detecting the dynamic seal wear failure in real time according to claim 1, wherein an insulating layer in the insulating seal covers only the relative movement position of the seal, and the thickness is the allowable wear amount of the seal.
6. The method for detecting the dynamic seal wear failure in real time according to claim 1, wherein the electric signal detected in the step (2) is a resistance value or a voltage value.
7. The dynamic seal wear failure real-time detection method according to claim 1, wherein a loop of the shell, the seal and the moving shaft is connected with a data transmission module, and the data transmission module transmits electric signal detection data in the loop to a background server through 5G wireless transmission. And remote data transmission is realized through a public network, and online monitoring and remote monitoring of the abrasion state of the sealing element are completed by adopting cloud computing and cloud storage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110685939.6A CN113465845A (en) | 2021-06-21 | 2021-06-21 | Dynamic seal wear failure real-time detection method |
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| CN202110685939.6A CN113465845A (en) | 2021-06-21 | 2021-06-21 | Dynamic seal wear failure real-time detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109929A (en) * | 2021-11-23 | 2022-03-01 | 山东大学 | Integrated hydraulic conversion oil cylinder applied to wave power generation device and using method thereof |
| CN114110166A (en) * | 2021-11-08 | 2022-03-01 | 奇瑞汽车股份有限公司 | Sealing device and system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007007405A1 (en) * | 2007-02-12 | 2008-08-21 | Robert Bosch Gmbh | Electrical device for detecting the state of wear of a dynamic sealing element |
| CN101629631A (en) * | 2008-06-24 | 2010-01-20 | 特瑞堡密封***美国有限公司 | Seal system in situ lifetime measurement |
| CN207080536U (en) * | 2017-04-17 | 2018-03-09 | 上海汽车集团股份有限公司 | Friction disc wear amount for automobile brake detects warning system |
| CN107965576A (en) * | 2016-10-20 | 2018-04-27 | 卡尔·弗罗伊登伯格公司 | Seal and sealing system |
| CN110242637A (en) * | 2019-04-25 | 2019-09-17 | 武汉理工大学 | Servo hydraulic cylinder Reciprocating Seals wear condition monitoring device and method |
| CN110578872A (en) * | 2019-08-28 | 2019-12-17 | 诸暨市逍遥管道科技有限公司 | System and method for monitoring non-metal pipeline leakage |
| CN112648915A (en) * | 2020-12-03 | 2021-04-13 | 中船重型装备有限公司 | Shield constructs machine knife dish real-time supervision wearing and tearing device |
| CN112728082A (en) * | 2020-12-29 | 2021-04-30 | 中密控股股份有限公司 | Sealing ring with abrasion loss online monitoring function |
-
2021
- 2021-06-21 CN CN202110685939.6A patent/CN113465845A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007007405A1 (en) * | 2007-02-12 | 2008-08-21 | Robert Bosch Gmbh | Electrical device for detecting the state of wear of a dynamic sealing element |
| CN101629631A (en) * | 2008-06-24 | 2010-01-20 | 特瑞堡密封***美国有限公司 | Seal system in situ lifetime measurement |
| CN107965576A (en) * | 2016-10-20 | 2018-04-27 | 卡尔·弗罗伊登伯格公司 | Seal and sealing system |
| CN207080536U (en) * | 2017-04-17 | 2018-03-09 | 上海汽车集团股份有限公司 | Friction disc wear amount for automobile brake detects warning system |
| CN110242637A (en) * | 2019-04-25 | 2019-09-17 | 武汉理工大学 | Servo hydraulic cylinder Reciprocating Seals wear condition monitoring device and method |
| CN110578872A (en) * | 2019-08-28 | 2019-12-17 | 诸暨市逍遥管道科技有限公司 | System and method for monitoring non-metal pipeline leakage |
| CN112648915A (en) * | 2020-12-03 | 2021-04-13 | 中船重型装备有限公司 | Shield constructs machine knife dish real-time supervision wearing and tearing device |
| CN112728082A (en) * | 2020-12-29 | 2021-04-30 | 中密控股股份有限公司 | Sealing ring with abrasion loss online monitoring function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110166A (en) * | 2021-11-08 | 2022-03-01 | 奇瑞汽车股份有限公司 | Sealing device and system |
| CN114109929A (en) * | 2021-11-23 | 2022-03-01 | 山东大学 | Integrated hydraulic conversion oil cylinder applied to wave power generation device and using method thereof |
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Application publication date: 20211001 |