CN112630700A - Performance testing process for underwater electric connector under turbid water quality - Google Patents
Performance testing process for underwater electric connector under turbid water quality Download PDFInfo
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- CN112630700A CN112630700A CN202011448963.XA CN202011448963A CN112630700A CN 112630700 A CN112630700 A CN 112630700A CN 202011448963 A CN202011448963 A CN 202011448963A CN 112630700 A CN112630700 A CN 112630700A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/523—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
Abstract
The invention belongs to the technical field of electric connectors, and discloses a performance test process of an underwater electric connector under turbid water, which comprises the following steps: s1, preparing test water, wherein the water quality turbidity of the test water can be adjusted step by step from the 1 st level, the 2 nd level, … to the nth level, the test water of the 2 nd level is more turbid than the test water of the 1 st level, and the water quality turbidity of the test water of the 1 st level, the 2 nd level, … and the nth level can be set; s2, testing the electrical performance of the underwater electric connector when the water quality turbidity of the test water is at the 1 st level; s3, judging whether the electrical performance is qualified, and if so, jumping to S4; and S4, plugging and unplugging the underwater electric connector for a set number of times under the conditions that the turbidity degree of water for testing is 1 st level, 2 nd level, … th level and m th level in sequence until the underwater electric connector fails, so that the one-stop performance test of the underwater electric connector in the research and development production stage is realized, and the use safety of the underwater electric connector is improved.
Description
Technical Field
The invention relates to the technical field of electric connectors, in particular to a performance test process of an underwater electric connector under turbid water.
Background
The underwater electric connector is applied to a deep water environment, and the performance of the underwater electric connector needs to be tested before use, so that the normal and reliable performance of the underwater electric connector is ensured. The actual working condition of the underwater electric connector needs to be considered for the performance test of the underwater electric connector. The water quality turbidity of the working environment of the underwater electric connector has a large change range, and the water quality turbidity can generate important influence on the electric performance of the underwater electric connector. At present, the research on the test of the environmental water quality turbidity on the electrical performance of the underwater electric connector is few, and the use safety of the underwater electric connector is influenced.
Disclosure of Invention
The invention aims to provide a performance test process of an underwater electric connector under turbid water, which is used for researching the water turbidity adaptability of the underwater electric connector and improving the use safety of a product.
In order to realize the purpose, the following technical scheme is provided:
the provided underwater electric connector performance testing process under turbid water comprises the following steps:
s1, preparing test water, wherein the water quality turbidity of the test water can be adjusted step by step from a 1 st level, a 2 nd level, … to an nth level, the test water of the 2 nd level is more turbid than the test water of the 1 st level, the water quality turbidity of the test water under the 1 st level, the 2 nd level, … and the nth level can be set, and n is a positive integer greater than 1;
s2, testing the electrical performance of the underwater electric connector when the water quality turbidity of the test water is at the 1 st level;
s3, judging whether the electrical performance is qualified, and if so, jumping to S4;
s4, plugging and unplugging the underwater electric connector for a set number of times under the conditions that the water quality turbidity of the test water is at the 1 st level, the 2 nd level, the … th level and the m th level in sequence until the underwater electric connector fails, wherein m is more than or equal to 1 and less than or equal to n, and m is a positive integer.
As a preferable scheme of the performance test process of the underwater electric connector under turbid water quality, the grade of the water quality turbidity of the test water is adjusted by adjusting the salinity, the pH value, the suspended particle concentration and the pressure of the test water.
As a preferable aspect of the process for testing the performance of the underwater electric connector under turbid water quality of the present invention, in step S2, the electric properties include insulation resistance, ac withstand voltage, and dc leakage.
As a preferable embodiment of the process for testing the performance of the underwater electric connector under turbid water quality of the present invention, in step S2, the insulation resistance test is performed twice, and the insulation resistance test is performed once before and after both the ac withstand voltage test and the dc leakage test.
As a preferable scheme of the performance test process of the underwater electric connector under turbid water, the electric performance further comprises direct current on-resistance.
As a preferable scheme of the performance test process of the underwater electric connector under the turbid water quality, the direct current conduction impedance of the underwater electric connector is measured under the condition that the water quality turbidity of the test water is the level 1.
As a preferable aspect of the process for testing the performance of the underwater electrical connector under turbid water quality of the present invention, the measurement of the dc on-resistance is performed before the first measurement of the insulation resistance, or the measurement of the dc on-resistance is performed after the second measurement of the insulation resistance.
As a preferable scheme of the process for testing the performance of the underwater electric connector under the turbid water quality, in step S4, after the underwater electric connector is plugged and pulled out for the set times under the turbidity of the water quality of each grade, the insulation resistance of the underwater electric connector is tested, and when the tested insulation resistance is not qualified, the underwater electric connector fails.
As a preferable scheme of the performance test process of the underwater electric connector under turbid water quality, the set times are more than or equal to 2.
As a preferable scheme of the performance test process of the underwater electric connector under the turbid water quality, the water quality turbidity of the test water under the 1 st level, the 2 nd level, the … th level and the nth level is set according to the water quality of the water environment to be served of the underwater electric connector.
The invention has the beneficial effects that:
the performance test process of the underwater electric connector under the turbid water comprises an electric performance test and a plugging test. The water quality turbidity of the test water can be adjusted. Electrical performance testing was performed at a water turbidity level of 1. And further performing plug-in test under the condition that the electrical performance test is qualified. And during plugging and unplugging test, gradually increasing the water quality turbidity level of the test water, performing plugging and unplugging test at each level, and performing insulation resistance test. And (4) the grade of the water quality turbidity corresponding to the unqualified insulation resistance test is the maximum water quality turbidity when the underwater electric connector to be detected works normally and safely. The invention can realize one-stop performance test of the underwater electric connector in the research and development production stage, improve the research and development and production efficiency and improve the use safety of the underwater electric connector.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a flow chart of a process for testing the performance of an underwater electric connector under turbid water quality according to an embodiment of the invention;
fig. 2 is a flowchart of an electrical performance test according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the embodiment provides a performance testing process for an underwater electrical connector under turbid water, which is used for researching the water quality adaptability of the underwater electrical connector, specifically, the maximum water quality turbidity corresponding to normal work of the underwater electrical connector is measured by testing the electrical performance of the underwater electrical connector under different water quality turbidities, and when the underwater electrical connector works in a water environment exceeding the maximum water quality turbidity, failure of the underwater electrical connector may occur, so that an experimental basis is provided for safe use of the underwater electrical connector.
The content of the performance test process of the underwater electric connector under the turbid water generally comprises the following steps: preparation work before testing, water quality turbidity adjustment of test water, electrical performance test and plugging test of the underwater electric connector.
The preparation work before the test mainly comprises test flow formulation, site control, personnel confirmation, equipment state inspection and test environment construction. The device is mainly divided into three parts: routine preparation, mechanical equipment and electrical equipment inspection, and environmental water quality and test preparation. After the related checking and preparing work is completed, each partial item needs to sign, confirm or fill in the data obtained by the related test in the test flow control table.
And (5) preparing conventionally. And (3) making a test flow: the formulation of the test flow needs to obtain the periodically changed water quality parameters in the practical application scene, and a plurality of points including the minimum turbidity, the maximum turbidity and the change interval are selected from the parameters for testing. Meanwhile, the total plugging times (n is more than or equal to 2) of the underwater electric connector under the turbidity to be tested in the environment water quality plugging and unplugging test process, the plugging and unplugging completion in several times and the like are determined. Test area control: and setting a danger mark for the test area, and prohibiting the independent people from entering randomly. Counting the participants: and the complete personnel presence of mechanical and electrical professionals before testing is ensured. And (3) checking the test equipment: and confirming the model, the metering number and the metering validity period of the testing equipment.
And (5) checking mechanical equipment and electrical equipment. The mechanical equipment inspection content: checking whether the pressure pump has a locked rotor phenomenon; checking whether the pressure pipeline and the pressure tank have leakage or not; and pressing a safety valve test button on the console to detect whether the pressure safety valve is normal or not. The electrical equipment inspection content: confirming that the grounding device is reliably grounded; testing the insulation resistance of the high-voltage test cable; the control console is connected with the alternating current boosting device and the direct current boosting device.
And (5) preparing an environmental water quality test. The underwater electrical connector seals the pressure chamber after being mounted in place in the pressure chamber. And opening the reflux valve, starting the pressurizing pump and injecting water into the pressure bin. When water flows back to the water storage tank, the pressure pump is stopped, and the return valve is closed.
And S1, preparing test water for simulating the water environment to be served of the underwater electric connector. The water quality turbidity of the test water can be adjusted to measure the electrical performance of the underwater electric connector under different water quality turbidity. Specifically, the level of the water quality turbidity of the test water can be set according to periodically changed water quality parameters in the water environment to be serviced of the underwater electric connector. For example, the water quality turbidity of the test water can be adjusted by levels 1, 2, … and n, and the water quality turbidity increases in sequence, i.e. the test water at level 2 is more turbid than the test water at level 1. n is a positive integer greater than 1.
Before testing water is prepared, the periodically changed water quality turbidity in the water environment to be served of the underwater electric connector is measured to determine the minimum water quality turbidity (namely, the water quality turbidity of the 1 st level) and the maximum water quality turbidity (namely, the water quality turbidity of the nth level), and then a plurality of different water quality turbidities are selected in the interval.
Specifically, the factors influencing the water quality turbidity of the test water include the salinity, the pH, the suspended particle concentration, the pressure and the like of the test water, and the level of the water quality turbidity of the test water is adjusted by adjusting one or more parameters of the salinity, the pH, the suspended particle concentration, the pressure and the like of the test water.
And S2, testing the electrical performance of the underwater electric connector when the water quality turbidity of the test water is level 1.
Referring to fig. 2, the electrical properties include ac withstand voltage, dc leakage, insulation resistance, and the like.
The AC withstand voltage test is as follows: and (3) carrying out voltage-withstanding grade detection on each phase of the underwater electric connector by using alternating-current voltage-withstanding testing equipment. The data obtained by the test is required to meet the relevant standards of the underwater electric connector application industry.
The AC withstand voltage test is as follows: and detecting leakage current of the insulating layer of each phase of the underwater electric connector by using direct current leakage testing equipment. The data obtained by the test is required to meet the relevant standards of the underwater electric connector application industry. In order to avoid safety accidents caused by electrons accumulated in the insulation layer of the underwater electric connector after the test is finished, the test position needs to be discharged by using a reliably grounded discharge device.
The insulation resistance test is as follows: and (4) carrying out insulation detection on each opposite phase and each opposite ground of the underwater electric connector by using insulation resistance testing equipment. The data obtained by the test is required to meet the relevant standards of the underwater electric connector application industry.
The insulation resistance test was performed twice, and the insulation resistance test was performed once before and after the ac withstand voltage test and the dc leakage test, respectively. And obtaining first insulation resistance data during the first insulation resistance test. And obtaining second insulation resistance data during the second insulation resistance test. And comparing the second insulation resistance data with the first insulation resistance data, and if the two data are the same, proving that the insulation of the underwater electric connector is not damaged in the test.
It should be noted that after each insulation resistance test is completed, in order to avoid safety accidents caused by accumulated electrons in the insulation layer of the underwater electric connector, a discharge device which is reliably grounded is used for discharging at the test position.
The electrical properties also include dc on-resistance. The DC on-resistance test is as follows: and D, detecting the direct current conduction impedance of each phase of the underwater electric connector by using direct current conduction impedance testing equipment. The data obtained by the test is required to meet the relevant standards of the underwater electric connector application industry. In order to obtain data closest to actual data in the test, it is necessary to test the phase to be tested by connecting a current test line of a dc on-resistance test device to the inside of the phase and a voltage test line to the outside of the current test line.
The dc on-resistance test was also performed at a level of 1 st in the turbidity of the test water. In this embodiment, the dc on-resistance is measured before the first measurement of the insulation resistance. In other embodiments, the measurement of the dc on-resistance may also be performed after the second insulation resistance measurement.
And S3, judging whether the electrical performance in the step S2 is qualified, if so, jumping to S4, and if not, treating the underwater electrical connector to be detected as a unqualified product.
And if one index is unqualified, the electrical performance index is unqualified.
S4, plugging and unplugging the underwater electric connector for a set number of times under the conditions that the turbidity of the water quality of the test water is 1 st level, 2 nd level, … th level and m th level in sequence until the underwater electric connector fails, wherein m is more than or equal to 1 and less than or equal to n, and m is a positive integer.
And further performing plug-in test under the condition that the electrical performance measurement of the underwater electrical connector is qualified. The method comprises the steps of increasing the water quality turbidity of test water step by step, and performing plug-in test under each level of water quality turbidity, namely plugging and unplugging the underwater electric connector for a set number of times, measuring the insulation resistance of the underwater electric connector after plugging and unplugging the set number of times each time, wherein when the measured insulation resistance is unqualified, the underwater electric connector is indicated to be invalid, and the water quality turbidity of the corresponding level is the maximum water quality turbidity when the underwater electric connector can be safely used.
The plugging and unplugging set times of the plugging and unplugging test is more than or equal to 2 and can be set according to specific conditions.
In the performance test process of the underwater electric connector under the turbid water, the process comprises an electric performance test and a plugging test. The water quality turbidity of the test water can be adjusted. Electrical performance testing was performed at a water turbidity level of 1. And further performing plug-in test under the condition that the electrical performance test is qualified. And during plugging and unplugging test, gradually increasing the water quality turbidity level of the test water, performing plugging and unplugging test at each level, and performing insulation resistance test. And (4) the grade of the water quality turbidity corresponding to the unqualified insulation resistance test is the maximum water quality turbidity when the underwater electric connector to be detected works normally and safely. The embodiment can realize one-stop performance test of the underwater electric connector in the research and development production stage, improve the research and development and production efficiency and improve the use safety of the underwater electric connector.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A testing process for the performance of an underwater electric connector under turbid water is characterized by comprising the following steps:
s1, preparing test water, wherein the water quality turbidity of the test water can be adjusted step by step from a 1 st level, a 2 nd level, … to an nth level, the test water of the 2 nd level is more turbid than the test water of the 1 st level, the water quality turbidity of the test water under the 1 st level, the 2 nd level, … and the nth level can be set, and n is a positive integer greater than 1;
s2, testing the electrical performance of the underwater electric connector when the water quality turbidity of the test water is at the 1 st level;
s3, judging whether the electrical performance is qualified, and if so, jumping to S4;
s4, plugging and unplugging the underwater electric connector for a set number of times under the conditions that the water quality turbidity of the test water is at the 1 st level, the 2 nd level, the … th level and the m th level in sequence until the underwater electric connector fails, wherein m is more than or equal to 1 and less than or equal to n, and m is a positive integer.
2. The process of claim 1, wherein the level of turbidity of the test water is adjusted by adjusting the salinity, pH, suspended particle concentration and pressure of the test water.
3. The turbid underwater electrical connector performance testing process of claim 1, wherein in step S2, the electrical properties comprise insulation resistance, ac withstand voltage and dc leakage.
4. The process of claim 3, wherein in step S2, the insulation resistance test is performed twice, and the insulation resistance test is performed once before and after the AC withstand voltage test and the DC leakage test.
5. The process of claim 4, wherein the electrical performance further comprises DC on-resistance.
6. The process of claim 5, wherein the DC conduction impedance of the underwater electrical connector is measured when the turbidity of the test water is at the level 1.
7. The process of claim 6, wherein the DC conduction impedance measurement is performed before a first insulation resistance measurement or the DC conduction impedance measurement is performed after a second insulation resistance measurement.
8. The process of claim 1, wherein in step S4, after the underwater electrical connector is plugged and pulled out for the set number of times under each level of water turbidity, the insulation resistance of the underwater electrical connector is tested, and when the tested insulation resistance is not qualified, the underwater electrical connector fails.
9. The process of claim 1, wherein the set number is greater than or equal to 2.
10. The process for testing the performance of the underwater electric connector under the turbid water quality according to any one of claims 1 to 9, wherein the water quality turbidity of the test water at the 1 st level, the 2 nd level, … and the nth level is set according to the water quality of the water environment to be used of the underwater electric connector.
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Application publication date: 20210409 |