A watertight connector performance testing system and testing method

Abstract

The present invention relates to a watertight connector performance test system and test method, belonging to the technical field of detection devices and methods, the watertight connector performance test system comprises an insulation test component, a pressurization component and a moisture test component; wherein the insulation test component comprises a megohmmeter for testing the insulation resistance and continuity of the watertight connector, the pressurization component comprises a pressure tank, a water pressure test chamber is formed inside the pressure tank, the watertight socket is installed in the pressure tank and sealed by a sealing groove; the moisture test component comprises a first moisture tester for testing the sealing performance of the watertight socket itself and a second moisture tester for testing the sealing performance of the sealing groove. The watertight connector performance test system first tests the electrical insulation performance and electrical contact performance of the watertight connector through the insulation test component, effectively avoiding the waste of withstand voltage test resources; and through the moisture test component, the test results are accurately and intuitively observed, improving the accuracy and efficiency of the test.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection devices and methods, and in particular, relates to a watertight connector performance testing system and testing method. Background Art

[0002] Watertight connectors work in underwater environments and need to withstand high-pressure water. If the sealing performance is not good, water will penetrate into the connector, causing signal attenuation or interruption, affecting the normal operation of underwater equipment. Therefore, it is necessary to conduct pressure resistance tests on watertight connectors to verify their sealing performance and reliability in high-pressure underwater environments.

[0003] In the prior art, Chinese utility model patent CN210741768U discloses an internal and external pressure test device for a watertight connector. This technical solution uses an external water pressure device to perform an external water pressure test on the watertight connector, and determines whether the watertight connector is qualified by observing the water stains on the inner surface of the watertight connector, the wire, the socket, and the inner cavity of the cylinder. However, the test results of this technical solution are not accurate enough. If the water stains caused by the leakage are small and difficult to observe with the naked eye, it may lead to misjudgment; and the device can only detect one watertight connector at a time, which is difficult to meet the testing needs of a large number of watertight connectors.

[0004] Therefore, how to improve the accuracy and efficiency of the pressure test of watertight connectors is a technical problem that urgently needs to be solved. Summary of the invention

[0005] In view of the shortcomings existing in the prior art, the present invention provides a watertight connector performance testing system, which first tests the electrical insulation performance and electrical contact performance of the watertight connector through an insulation test component, and then performs a voltage withstand test if they are qualified, thereby effectively preventing watertight connectors with unqualified electrical insulation performance or electrical contact performance from entering the voltage withstand test, causing a waste of voltage withstand test resources; and through the setting of the moisture test component, the test results can be observed accurately and intuitively, thereby improving the accuracy and efficiency of the voltage withstand test of the watertight connector.

[0006] The present invention provides a watertight connector performance testing system, comprising:

[0007] An insulation test assembly, including a megohmmeter, the megohmmeter being connected to a wire connected to the watertight socket, for testing the insulation resistance and continuity of the watertight connector;

[0008] A pressurizing assembly includes a pressure tank, a water pressure test chamber is formed inside the pressure tank, a mounting hole for mounting a watertight socket of a watertight connector is opened at the bottom of the pressure tank, the mounting hole passes through the bottom of the pressure tank, the watertight socket is threadedly connected in the mounting hole, the watertight socket and the inner surface of the bottom of the pressure tank are sealed by a sealing groove, and the wire extends along the mounting hole to the outside of the pressure tank;

[0009] The moisture testing component includes a first moisture tester and a second moisture tester; the first moisture tester is installed at the connection between the watertight socket and the wire, and is used to test the sealing performance of the watertight socket itself; the second moisture tester is installed at the end of the installation hole away from the watertight socket, and is used to test the sealing performance of the sealing groove.

[0010] This technical solution effectively avoids the waste of voltage withstand test resources by first testing the electrical insulation performance and electrical contact performance of the watertight connector through the insulation test component; and the moisture test component can accurately and intuitively display whether there is water, so that the tester can quickly draw a conclusion, making the results of the watertight connector voltage withstand test more reliable, while improving the accuracy and efficiency of the watertight connector voltage withstand test.

[0011] In some embodiments, the watertight socket is provided with a threaded mounting portion, the mounting hole is provided with an internal thread matching the threaded mounting portion, the watertight socket is threadedly connected to the mounting hole through the threaded mounting portion, and the length of the threaded mounting portion is less than the depth of the mounting hole. In this technical solution, the length of the threaded mounting portion is less than the depth of the mounting hole, which can facilitate the installation of the second moisture tester.

[0012] In some embodiments, the first moisture tester includes a first moisture test paper, which is attached to the root of the wire connected to the watertight socket and is used to test the sealing performance of the watertight socket itself. This technical solution uses the first moisture test paper to make the installation of the first moisture tester and the observation of the measurement results easier.

[0013] In some embodiments, the second moisture tester includes a second moisture test paper, which is attached to the bottom of the mounting hole and extends into the inner side of the mounting hole, and is used to test the sealing performance of the sealing groove. This technical solution makes the installation of the second moisture tester and the observation of the measurement results easier through the second moisture test paper.

[0014] In some embodiments, the pressure tank includes a cylinder, and the upper and lower ends of the cylinder are respectively sealed with an upper end cover and a lower end cover, and the lower end cover is provided with a plurality of mounting holes. The technical solution provides a plurality of mounting holes on the lower end cover so that the watertight connector performance test system provided by the present invention can simultaneously perform performance tests on multiple watertight connectors.

[0015] In some embodiments, the mounting holes have different specifications to be applicable to watertight sockets of different specifications. The technical solution enables the watertight connector performance test system provided by the present invention to be applicable to watertight sockets of different specifications through mounting holes of different specifications.

[0016] The present invention also provides a method for testing the performance of a watertight connector, which uses the watertight connector performance testing system as described above to perform a hydrostatic pressure test, comprising the following steps:

[0017] Initial insulation test, connect the megohmmeter to the wire connected to the watertight socket to test the insulation resistance and continuity of the watertight connector;

[0018] Install the moisture test assembly, install the first moisture tester at the root of the wire, install the watertight socket in the installation hole opened at the bottom of the pressure tank, so that the watertight socket is located in the pressure tank; install the second moisture tester at the end of the installation hole away from the watertight socket, so that the second moisture test paper extends into the installation hole;

[0019] Hydrostatic pressure resistance performance test: pressurize the water pressure test chamber of the pressure tank, maintain the pressure after reaching the test pressure, and release the pressure after the pressure reaches the first preset time; judge the sealing performance of the sealing groove by observing the situation of the second moisture tester, then remove the watertight connector, and judge the sealing performance of the watertight socket itself by observing the situation of the first moisture tester;

[0020] Secondary insulation test: After the removed watertight connector has returned to a stable state, connect the megohmmeter to the wire connected to the watertight socket to test the insulation resistance and continuity of the watertight connector.

[0021] In some of the embodiments, detecting the insulation resistance of the watertight connector specifically includes measuring, with a megohmmeter, the insulation resistance between each wire of the watertight connector and the insulation resistance between each wire and the metal shell of the socket to determine the electrical insulation performance of the watertight connector; detecting the continuity of the watertight connector specifically includes measuring, with a megohmmeter, the resistance value between each connector of the watertight connector and the corresponding wire to determine the continuity of the watertight connector.

[0022] In addition, the present invention also provides a watertight connector performance test method, which uses the watertight connector performance test system as described above to perform a circulating water pressure test, comprising the following steps:

[0023] Initial insulation test, connect the megohmmeter to the wire connected to the watertight socket to test the insulation resistance and continuity of the watertight connector;

[0024] Install the moisture test assembly, install the first moisture tester at the root of the wire, install the watertight socket in the installation hole opened at the bottom of the pressure tank, so that the watertight socket is located in the pressure tank; install the second moisture tester at the end of the installation hole away from the watertight socket, so that the second moisture test paper extends into the installation hole;

[0025] Cyclic pressure test: pressurize the water pressure test chamber of the pressure tank, maintain the pressure after reaching the test pressure, release the pressure after the pressure reaches the second preset time, and then measure the insulation resistance between the wires of the watertight connector by a megohmmeter. By observing the situation of the second moisture tester, the sealing performance of the sealing groove is judged, and this cycle is repeated several times;

[0026] The final pressure test is to pressurize the water pressure test chamber of the pressure tank, maintain the pressure after reaching the test pressure, and release the pressure after the pressure reaches the third preset time; by observing the situation of the second moisture tester, the sealing performance of the sealing groove is judged, and then the watertight connector is removed, and the sealing performance of the watertight socket itself is judged by observing the situation of the first moisture tester;

[0027] Secondary insulation test: After the removed watertight connector has returned to a stable state, connect the megohmmeter to the wire connected to the watertight socket to test the insulation resistance and continuity of the watertight connector.

[0028] In some of the embodiments, detecting the insulation resistance of the watertight connector specifically includes measuring, with a megohmmeter, the insulation resistance between each wire of the watertight connector and the insulation resistance between each wire and the metal shell of the socket to determine the electrical insulation performance of the watertight connector; detecting the continuity of the watertight connector specifically includes measuring, with a megohmmeter, the resistance value between each connector of the watertight connector and the corresponding wire to determine the continuity of the watertight connector.

[0029] Based on the above scheme, the watertight connector performance testing system and testing method in the embodiment of the present invention adopts an insulating test component to pre-test the electrical insulation performance and electrical contact performance of the watertight connector, effectively avoiding the watertight connector with unqualified electrical insulation performance or electrical contact performance from entering the withstand voltage test, resulting in a waste of withstand voltage test resources; the pressurizing component realizes the watertight connector performance testing system to test multiple watertight connectors of different specifications at the same time through several mounting holes of different specifications, thereby improving the testing efficiency; the moisture testing component can accurately and intuitively display whether water exists, so that the tester can quickly draw a conclusion, making the result of the watertight connector withstand voltage test more reliable, while improving the accuracy and efficiency of the watertight connector withstand voltage test. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 It is a structural schematic diagram of the watertight connector performance testing system of the present invention;

[0032] Figure 2 for Figure 1A magnified schematic diagram of part A;

[0033] Figure 3 It is a structural schematic diagram of a watertight socket installed in a mounting hole;

[0034] Figure 4 It is a structural schematic diagram of the distribution of mounting holes of the lower end cover of the pressure tank;

[0035] Figure 5 A schematic diagram of the structure of the base.

[0036] In the figure:

[0037] 1. Pressure tank; 2. Pressure pump; 3. Pressure gauge; 4. Watertight socket; 5. First moisture tester; 6. Second moisture tester; 7. Base; 8. Megaohmmeter;

[0038] 101, upper end cover; 102, cylinder; 103, lower end cover; 104, mounting hole; 105, O-ring;

[0039] 106. first fixing member; 201. valve;

[0040] 401, sealing groove; 402, vulcanized rubber body of watertight socket; 403, metal shell of watertight socket;

[0041] 404, wire; 701, support rod; 702, support plate; 703, second fixing member. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] like Figure 1-Figure 5 As shown, in one embodiment of the watertight connector performance test system and test method of the present invention, the watertight connector performance test system includes an insulation test component, a pressurization component and a moisture test component; wherein the insulation test component includes a megohmmeter 8, the megohmmeter 8 is connected to the wire 404 connected to the watertight socket 4, and is used to test the insulation resistance and continuity of the watertight connector; the pressurization component includes a pressure tank 1, a water pressure test chamber is formed inside the pressure tank 1, and a mounting hole 104 for mounting the watertight socket 4 of the watertight connector is opened at the bottom of the pressure tank 1, and the mounting hole 104 passes through the bottom of the pressure tank 1. The watertight socket 4 is threadedly connected to the mounting hole 104, the watertight socket 4 and the inner surface of the bottom of the pressure tank 1 are sealed by a sealing groove 401, and the wire 404 connected to the watertight socket 4 extends along the mounting hole 104 to the outside of the pressure tank 1; the moisture testing assembly includes a first moisture tester 5 and a second moisture tester 6; the first moisture tester 5 is installed at the connection between the watertight socket 4 and the wire 404, and is used to test the sealing performance of the watertight socket 4 itself; the second moisture tester 6 is installed at one end of the mounting hole 104 away from the watertight socket 4, and is used to test the sealing performance of the sealing groove 401.

[0047] In the above-mentioned schematic embodiment, the present invention uses an insulation test component to pre-test the electrical insulation performance and electrical contact performance of the watertight connector. When the electrical insulation performance and electrical contact performance of the watertight connector meet the qualified standards, the watertight connector is subjected to a withstand voltage test, thereby effectively avoiding the watertight connector with unqualified electrical insulation performance or electrical contact performance from entering the withstand voltage test, resulting in a waste of withstand voltage test resources; in addition, compared with observing whether there is moisture with the naked eye, the present invention can accurately and intuitively display whether there is water through the moisture test component, so that the tester can quickly draw a conclusion, and the operation is simple, making the results of the withstand voltage test of the watertight connector more reliable, while improving the accuracy and efficiency of the withstand voltage test of the watertight connector.

[0048] In order to facilitate the installation of the second moisture tester 6, in some embodiments, as Figure 3As shown, the watertight socket 4 is provided with a threaded mounting portion, and an internal thread matching the threaded mounting portion is provided in the mounting hole 104. The watertight socket 4 is threadedly connected to the mounting hole 104 through the threaded mounting portion, and the length of the threaded mounting portion is less than the depth of the mounting hole 104.

[0049] Furthermore, if Figure 3 As shown, the first moisture tester 5 includes a first moisture test paper, which is attached to the root of the connection between the wire 404 and the watertight socket 4, and is used to test the sealing performance of the watertight socket 4 itself. The first moisture test paper makes it easier to install the first moisture tester 5 and observe the measurement results. It should be noted that the first moisture test paper is a moisture test paper that changes color when it comes into contact with water, and can be adhered to the root of the wire 404 through its own adhesive. If the first moisture test paper changes color during the test, it means that the water in the pressure tank 1 seeps out along the vulcanized rubber body 402 of the watertight socket and the metal shell 403 of the watertight socket, and the seal fails here, that is, the sealing performance of the watertight socket 4 itself is unqualified.

[0050] In some embodiments, Figure 2 As shown, the second moisture tester 6 includes a second moisture test paper, which is attached to the bottom of the mounting hole 104 and extends into the inner side of the mounting hole 104, and is used to test the sealing performance of the sealing groove 401. The second moisture test paper makes it easier to install the second moisture tester 6 and observe the measurement results. It should be noted that the second moisture test paper is a moisture test paper that changes color when it comes into contact with water, and can be adhered to the bottom of the mounting hole 104 and extended into the inner side of the mounting hole 104 through its own adhesive backing. If the second moisture test paper changes color during the test, it means that the water in the pressure tank 1 seeps out along the threaded connection between the watertight socket 4 and the mounting hole 104, that is, the sealing groove 401 at the connection between the watertight socket 4 and the pressure tank 1 fails to seal.

[0051] In some embodiments, Figure 1 As shown, the pressure tank 1 includes a cylinder 102, and the upper and lower ends of the cylinder 102 are respectively sealed with an upper end cover 101 and a lower end cover 103, and the lower end cover 103 is provided with a plurality of mounting holes 104. It should be noted that the sealing connection between the cylinder 102 and the upper end cover 101 and the lower end cover 103 can be achieved in a variety of ways. The cylinder 102 of this embodiment is respectively fixedly connected with the upper end cover 101 and the lower end cover 103 through a first fixing member 106, and the connection between the cylinder 102 and the upper end cover 101 and the connection between the cylinder 102 and the lower end cover 103 are respectively provided with O-rings 105 for sealing. Further, the first fixing member 106 can be selected from high-strength hexagon socket screws.

[0052] In some embodiments, Figure 4As shown, the mounting holes 104 have different specifications to be suitable for watertight sockets 4 of different specifications. Through the mounting holes 104 of different specifications, the watertight connector withstand voltage test device provided by the present invention can be suitable for watertight sockets 4 of different specifications. This embodiment provides a device with two specifications of 16 mounting holes 104 ( Figure 1 The design of 8 7 / 16-20UNF watertight sockets 4 and 8 1 / 2-20UNF watertight sockets 4) can test 16 watertight connectors at the same time. It should be noted that when there are idle mounting holes 104 in a test, after the watertight connectors to be tested are installed, the idle mounting holes 104 can be blocked to ensure the sealing of the pressure tank 1 so as to smoothly carry out the test.

[0053] In some embodiments, Figure 1 As shown, the pressurizing assembly further includes a pressure pump 2, which is connected to the water pressure test chamber. By providing the pressure pump 2, the pressurizing efficiency is improved and the stability of the pressure change in the pressure tank 1 is ensured.

[0054] In order to more conveniently control the pressure change in the pressure tank 1, in some embodiments, as Figure 1 As shown, a valve 201 is provided at the connection between the pressure pump 2 and the pressure tank 1 , and the valve 201 can be used to adjust parameters such as water flow and pressure, or control the switch of pressurizing and depressurizing the pressure tank 1 .

[0055] In some embodiments, Figure 1 As shown, the pressurizing assembly also includes a pressure gauge 3 for measuring the internal pressure value of the pressure tank 1, and the pressure gauge 3 is arranged on the top of the pressure tank 1. The arrangement of the pressure gauge 3 facilitates monitoring and displaying the pressure condition inside the pressure tank 1, so as to timely discover abnormalities or faults and ensure the safe operation of the watertight connector pressure test device.

[0056] In some embodiments, a safety valve is further provided between the pressure gauge 3 and the pressure tank 1. The provision of the safety valve can prevent the pressure gauge 3 from exceeding the allowable range and protect the pressure gauge 3 from damage.

[0057] In some embodiments, Figure 1 As shown, the watertight connector pressure test device also includes a base 7 for support, and the pressure tank 1 is detachably connected to the base 7. The pressure tank 1 is supported by the base 7, making the installation and observation of the pressure tank 1 and the moisture test assembly more convenient.

[0058] Furthermore, if Figure 5 As shown, the base 7 is threadedly connected to the pressure tank 1. The detachable connection mode of the threaded connection makes the disassembly and assembly of the pressure tank 1 easier.

[0059] In some embodiments, Figure 5As shown, the base 7 includes a support rod 701 and a support plate 702. The support rod 701 is threadedly connected to the lower end cover 103 of the pressure tank 1 through its own external thread, and the support plate 702 is connected to the internal thread of the support rod 701 through the second fixing member 703. Further, the second fixing member 703 can be a countersunk screw.

[0060] Based on the above-mentioned watertight connector performance testing system, the present invention also provides a watertight connector performance testing method, which uses the above-mentioned watertight connector performance testing system to perform a hydrostatic pressure test, including the following steps:

[0061] Initial insulation test, connect the megohmmeter 8 to the wire 404 connected to the watertight socket 4 to detect the insulation resistance and continuity of the watertight connector;

[0062] Install the moisture test assembly, install the first moisture tester 5 at the root of the wire 404, install the watertight socket 4 in the installation hole 104 opened at the bottom of the pressure tank 1, so that the watertight socket 4 is located in the pressure tank 1; install the second moisture tester 6 at the end of the installation hole 104 away from the watertight socket 4, so that the second moisture test paper extends into the installation hole 104;

[0063] The hydrostatic pressure resistance performance test is to pressurize the water pressure test chamber of the pressure tank 1, maintain the pressure after reaching the test pressure, and release the pressure after the pressure reaches the first preset time; by observing the situation of the second moisture tester 6, the sealing performance of the sealing groove 401 is judged, and then the watertight connector is removed, and the sealing performance of the watertight socket 4 itself is judged by observing the situation of the first moisture tester 5;

[0064] Secondary insulation test: After the removed watertight connector is stationary and restored to a stable state, the megohmmeter 8 is connected to the wire 404 connected to the watertight socket 4 to test the insulation resistance and continuity of the watertight connector.

[0065] It should be noted that the test pressure is generally the product of the water pressure corresponding to the working water depth of the watertight connector and the safety factor. The safety factor is generally 1.1-1.25. The first preset time is generally not less than 1 hour. It usually takes at least 1 hour for the watertight connector to return to a stable state.

[0066] It should also be noted that, when observing the situation of the second moisture tester 6 and judging the sealing performance of the sealing groove 401, if the second moisture tester 6 changes color, it means that the water in the pressure tank 1 has seeped out along the threaded connection between the watertight socket 4 and the mounting hole 104, that is, the sealing of the sealing groove 401 has failed; when observing the situation of the first moisture tester 5 and judging the sealing performance of the watertight socket 4 itself, if the first moisture tester 5 changes color, it means that the seal between the vulcanized rubber body 402 of the watertight socket 4 and the metal shell 403 of the watertight socket 4 has failed; if there is no color change in both, it means that the pressure resistance performance test of the watertight connector under hydrostatic pressure has passed.

[0067] Furthermore, detecting the insulation resistance of the watertight connector specifically includes measuring, with a megohmmeter 8, the insulation resistance between each wire 404 of the watertight connector and the insulation resistance between each wire 404 and the metal shell of the socket to determine the electrical insulation performance of the watertight connector; detecting the continuity of the watertight connector specifically includes measuring, with a megohmmeter 8, the resistance value between each connector of the watertight connector and the corresponding wire 404 to determine the continuity of the watertight connector.

[0068] In this step, under the condition of 500VDC, the insulation resistance between the wires 404 of the watertight connector and the insulation resistance between the wires 404 and the metal shell of the socket are greater than 200MΩ, which is qualified, and the qualified value indicates that the insulation performance of the watertight connector is qualified; under the condition of 500VDC, the resistance value between each connector of the watertight connector and the corresponding wire 404 is less than 10mΩ, which is qualified, and the qualified value indicates that the watertight connector can conduct current normally.

[0069] In addition, the present invention also provides a watertight connector performance test method, which uses the above-mentioned watertight connector performance test system to perform a circulating water pressure test, including the following steps:

[0070] Initial insulation test, connect the megohmmeter 8 to the wire 404 connected to the watertight socket 4 to detect the insulation resistance and continuity of the watertight connector;

[0071] Install the moisture test assembly, install the first moisture tester 5 at the root of the wire 404, install the watertight socket 4 in the installation hole 104 opened at the bottom of the pressure tank 1, so that the watertight socket 4 is located in the pressure tank 1; install the second moisture tester 6 at the end of the installation hole 104 away from the watertight socket 4, so that the second moisture test paper extends into the installation hole 104;

[0072] Cyclic pressure test, pressurizing the water pressure test chamber of the pressure tank 1, maintaining the pressure after reaching the test pressure, and releasing the pressure after the pressure reaches the second preset time, and then measuring the insulation resistance between the wires 404 of the watertight connector by the megohmmeter 8, and judging the sealing performance of the sealing groove 401 by observing the situation of the second moisture tester 6, and repeating this cycle several times;

[0073] The final pressure test is to pressurize the water pressure test chamber of the pressure tank 1, maintain the pressure after reaching the test pressure, and release the pressure after the pressure reaches the third preset time; by observing the condition of the second moisture tester 6, the sealing performance of the sealing groove 401 is judged, and then the watertight connector is removed, and the sealing performance of the watertight socket 4 itself is judged by observing the condition of the first moisture tester 5;

[0074] Secondary insulation test: After the removed watertight connector is stationary and restored to a stable state, the megohmmeter 8 is connected to the wire 404 connected to the watertight socket 4 to test the insulation resistance and continuity of the watertight connector.

[0075] It should be noted that the test pressure is generally the product of the water pressure corresponding to the working water depth of the watertight connector and the safety factor. The safety factor is generally 1.1-1.25. The second preset time is generally not less than 1 minute, and the third preset time is generally not less than 24 hours. The number of cycles of the cyclic pressure test is generally not less than 25 times. It usually takes at least 1 hour for the watertight connector to recover to a stable state.

[0076] It should also be noted that, when observing the situation of the second moisture tester 6 and judging the sealing performance of the sealing groove 401, if the second moisture tester 6 changes color, it means that the water in the pressure tank 1 has seeped out along the threaded connection between the watertight socket 4 and the mounting hole 104, that is, the sealing of the sealing groove 401 has failed; when observing the situation of the first moisture tester 5 and judging the sealing performance of the watertight socket 4 itself, if the first moisture tester 5 changes color, it means that the seal between the vulcanized rubber body 402 of the watertight socket 4 and the metal shell 403 of the watertight socket 4 has failed; if there is no color change in both, it means that the pressure resistance performance test of the watertight connector under the circulating water pressure has passed.

[0077] Furthermore, detecting the insulation resistance of the watertight connector specifically includes measuring, with a megohmmeter 8, the insulation resistance between each wire 404 of the watertight connector and the insulation resistance between each wire 404 and the metal shell of the socket to determine the electrical insulation performance of the watertight connector; detecting the continuity of the watertight connector specifically includes measuring, with a megohmmeter 8, the resistance value between each connector of the watertight connector and the corresponding wire 404 to determine the continuity of the watertight connector.

[0078] In this step, under the condition of 500VDC, the insulation resistance between the wires 404 of the watertight connector and the insulation resistance between the wires 404 and the metal shell of the socket are greater than 200MΩ, which is qualified, and the qualified value indicates that the insulation performance of the watertight connector is qualified; under the condition of 500VDC, the resistance value between each connector of the watertight connector and the corresponding wire 404 is less than 10mΩ, which is qualified, and the qualified value indicates that the watertight connector can conduct current normally.

[0079] The application of the watertight connector performance test method in each of the above embodiments can effectively avoid the waste of pressure test resources and accurately and intuitively obtain the test results. Other positive technical effects of the watertight connector performance test system in each of the above embodiments are also applicable to the watertight connector performance test method, which will not be repeated here.

[0080] Through the description of multiple embodiments of the watertight connector performance testing system and testing method of the present invention, it can be seen that the embodiments of the present invention have at least one or more of the following advantages:

[0081] 1. The watertight connector performance test system provided by the present invention can accurately and intuitively display whether water exists through the setting of the moisture test component, so that the tester can quickly obtain the test result, thereby improving the accuracy of the test;

[0082] 2. The watertight connector performance test system provided by the present invention can be applied to watertight connectors of different specifications through multiple mounting holes 104 of different specifications, and can test multiple watertight connectors at the same time, thereby improving the efficiency of the watertight connector withstand voltage test;

[0083] 3. The watertight connector performance testing method provided by the present invention pre-tests the electrical insulation performance and electrical contact performance of the watertight connector through an insulation test component. When the electrical insulation performance and electrical contact performance of the watertight connector meet the qualified standards, the watertight connector is subjected to a withstand voltage test, thereby effectively avoiding the watertight connector with unqualified electrical insulation performance or electrical contact performance from entering the withstand voltage test, resulting in a waste of withstand voltage test resources.

[0084] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0085] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A watertight connector performance testing system, characterized in that: include: An insulation test assembly, comprising a megohmmeter, the megohmmeter being connected to a wire connected to the watertight socket and being used to test the insulation resistance and continuity of the watertight connector; A pressurizing assembly, comprising a pressure tank, a water pressure test chamber is formed inside the pressure tank, a mounting hole for mounting a watertight socket of the watertight connector is opened at the bottom of the pressure tank, the mounting hole passes through the bottom of the pressure tank, the watertight socket is threadedly connected in the mounting hole, the watertight socket and the inner surface of the bottom of the pressure tank are sealed by a sealing groove, and the wire extends along the mounting hole to the outside of the pressure tank; The moisture testing assembly includes a first moisture tester and a second moisture tester; the first moisture tester is installed at the connection between the watertight socket and the wire, and is used to test the sealing performance of the watertight socket itself; the second moisture tester is installed at the end of the mounting hole away from the watertight socket, and is used to test the sealing performance of the sealing groove.

2. The watertight connector performance testing system according to claim 1, characterized in that: The watertight socket is provided with a threaded mounting portion, the mounting hole is provided with an internal thread matching the threaded mounting portion, the watertight socket is threadedly connected to the mounting hole via the threaded mounting portion, and the length of the threaded mounting portion is less than the depth of the mounting hole.

3. The watertight connector performance testing system according to claim 1, characterized in that: The first moisture tester comprises a first moisture test paper, which is attached to the root of the connection between the wire and the watertight socket and is used to test the sealing performance of the watertight socket itself.

4. The watertight connector performance testing system according to claim 1, characterized in that: The second moisture tester includes a second moisture test paper, which is attached to the bottom of the mounting hole and extends into the inner side of the mounting hole, and is used to test the sealing performance of the sealing groove.

5. The watertight connector performance testing system according to claim 1, characterized in that: The pressure tank comprises a cylinder, and the upper and lower ends of the cylinder are respectively sealedly connected with an upper end cover and a lower end cover, and the lower end cover is provided with a plurality of mounting holes.

6. The watertight connector performance testing system according to claim 1 or 5, characterized in that: The mounting holes have different specifications to be suitable for watertight sockets of different specifications.

7. A method for testing the performance of a watertight connector, characterized in that: A hydrostatic pressure test is performed using the watertight connector performance test system according to any one of claims 1 to 6, wherein the hydrostatic pressure test comprises the following steps: Initial insulation test, connecting the megohmmeter to the wire connected to the watertight socket to detect the insulation resistance and continuity of the watertight connector; Install the moisture test assembly, install the first moisture tester at the root of the wire, install the watertight socket in the installation hole opened at the bottom of the pressure tank, so that the watertight socket is located in the pressure tank; install the second moisture tester at the end of the installation hole away from the watertight socket, so that the second moisture test paper extends into the installation hole; The hydrostatic pressure resistance performance test is to pressurize the water pressure test chamber of the pressure tank, maintain the pressure after reaching the test pressure, and release the pressure after the pressure reaches the first preset time; the sealing performance of the sealing groove is judged by observing the situation of the second moisture tester, and then the watertight connector is removed, and the sealing performance of the watertight socket itself is judged by observing the situation of the first moisture tester; Secondary insulation test: after the removed watertight connector is stationary and restored to a stable state, the megohmmeter is connected to the wire connected to the watertight socket to test the insulation resistance and continuity of the watertight connector.

8. The watertight connector performance testing method according to claim 7, characterized in that: Detecting the insulation resistance of the watertight connector specifically includes: measuring the insulation resistance between each wire of the watertight connector and the insulation resistance between each wire and the metal shell of the socket with a megohmmeter to determine the electrical insulation performance of the watertight connector; detecting the continuity of the watertight connector specifically includes: measuring the resistance value between each connector of the watertight connector and the corresponding wire with a megohmmeter to determine the continuity of the watertight connector.

9. A method for testing the performance of a watertight connector, characterized in that: A circulating water pressure test is performed using the watertight connector performance test system according to any one of claims 1 to 6, wherein the circulating water pressure test comprises the following steps: Initial insulation test, connecting the megohmmeter to the wire connected to the watertight socket to detect the insulation resistance and continuity of the watertight connector; Install the moisture test assembly, install the first moisture tester at the root of the wire, install the watertight socket in the installation hole opened at the bottom of the pressure tank, so that the watertight socket is located in the pressure tank; install the second moisture tester at the end of the installation hole away from the watertight socket, so that the second moisture test paper extends into the installation hole; Cyclic pressure test, pressurizing the water pressure test chamber of the pressure tank, maintaining the pressure after reaching the test pressure, releasing the pressure after the pressure reaches the second preset time, and then measuring the insulation resistance between the wires of the watertight connector by a megohmmeter, and judging the sealing performance of the sealing groove by observing the situation of the second moisture tester, and repeating this cycle several times; The final pressure test is to pressurize the water pressure test chamber of the pressure tank, maintain the pressure after reaching the test pressure, and release the pressure after the pressure reaches a third preset time; by observing the condition of the second moisture tester, the sealing performance of the sealing groove is judged, and then the watertight connector is removed, and the sealing performance of the watertight socket itself is judged by observing the condition of the first moisture tester; Secondary insulation test: after the removed watertight connector is stationary and restored to a stable state, the megohmmeter is connected to the wire connected to the watertight socket to test the insulation resistance and continuity of the watertight connector.

10. The watertight connector performance testing method according to claim 9, characterized in that: Detecting the insulation resistance of the watertight connector specifically includes: measuring the insulation resistance between each wire of the watertight connector and the insulation resistance between each wire and the metal shell of the socket with a megohmmeter to determine the electrical insulation performance of the watertight connector; detecting the continuity of the watertight connector specifically includes: measuring the resistance value between each connector of the watertight connector and the corresponding wire with a megohmmeter to determine the continuity of the watertight connector.

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