Withstand voltage test equipment applied to high-voltage coaxial cable

Abstract

The utility model discloses a withstand voltage test device applied to a high-voltage coaxial cable. The withstand voltage test device comprises a square structure main body, a high-voltage rectangular socket, a general cylindrical high-voltage socket, a connecting lead and an auxiliary element, the square structure main body is an epoxy resin solidification body; the high-voltage rectangular socket, the universal cylindrical high-voltage socket, the connecting lead and the auxiliary element are solidified in the square structure main body; the high-voltage rectangular socket is fixedly connected with the auxiliary element; the connecting wire is a core and shell outgoing line of the high-voltage rectangular socket, and the outer layer of the connecting wire is wrapped with a soft insulating rubber; the connecting wire and the general cylindrical high-voltage socket form a connecting path in a soldering tin welding mode. Through comprehensive optimization of material selection, structural design, electrical connection and the like, high performance, high safety, high stability and usability of the high-voltage test equipment are realized, and the high-voltage test equipment can be better suitable for batch test scenes with strict requirements on test precision and safety.

Description

Technical Field

[0001] The utility model relates to the field of high - voltage testing, and more specifically to a voltage withstand testing device for high - voltage coaxial cables. Background Art

[0002] In the field of special equipment testing, especially for the high - voltage withstand testing of high - voltage coaxial cables, its importance is self - evident. Such cables are commonly used to transmit high - frequency and high - power signals and are widely applied in fields such as military communication, medical equipment, aerospace, and high - performance computing. Therefore, ensuring the stability and safety of these cables under extreme working conditions is crucial. Although the existing testing methods are direct and basic, with the development of technology and the improvement of testing requirements, some limitations have gradually emerged.

[0003] The current testing method relies on the simple direct connection of a high - voltage rectangular socket and a cable plug, lacking effective safety isolation and protection measures. In a high - voltage environment, any minor poor contact or insulation breakage may trigger electric arcs, short - circuits, or even explosions, posing a serious threat to operators and surrounding equipment.

[0004] Moreover, during batch testing, the frequent manual plugging and unplugging of high - voltage rectangular sockets is not only time - consuming and laborious but also increases the risk of misoperation. The lack of an automated or semi - automated connection device results in low testing efficiency and is difficult to meet the needs of large - scale production testing.

[0005] In addition, manual connection may lead to inconsistent contact pressure and position for each test, affecting the accuracy and repeatability of test results. The absence of standardized test interfaces and a fixed test environment makes it difficult to compare and analyze test data. At the same time, it is sensitive to environmental conditions. For example, changes in humidity and temperature can affect the insulation performance, especially the unsealed connection parts are prone to moisture absorption, reducing the reliability of the test.

[0006] When the testing equipment needs to be repaired or technically upgraded, due to its simple structure, it often needs to be replaced as a whole, increasing the maintenance cost and being unfavorable for technological iteration.

[0007] Therefore, how to design a voltage withstand testing device for high - voltage coaxial cables to improve the safety, convenience, and testing accuracy of high - voltage coaxial cable voltage withstand testing on the premise of high environmental adaptability is an urgent problem for those skilled in the art. Summary of the Utility Model

[0008] In view of this, the utility model provides a voltage withstand testing device for high - voltage coaxial cables, which integrates key components such as high - voltage rectangular sockets and universal cylindrical high - voltage sockets, realizing efficient voltage withstand testing of high - voltage coaxial cables, and is especially suitable for scenarios with strict requirements and batch testing.

[0009] To achieve the above object, the utility model adopts the following technical solutions:

[0010] A withstand voltage test device for high-voltage coaxial cables, comprising: a square structure main body, a high-voltage rectangular socket, a general cylindrical high-voltage socket, connecting wires and auxiliary components;

[0011] The square structure main body is an epoxy resin solidified body;

[0012] The high-voltage rectangular socket, the general cylindrical high-voltage socket, the connecting wires and the auxiliary components are solidified inside the square structure main body;

[0013] The high-voltage rectangular socket is fixedly connected to the auxiliary component;

[0014] The connecting wire is the core and shell lead-out wire of the high-voltage rectangular socket, and the outer layer of the connecting wire is wrapped with a soft insulating rubber sheet; the connecting wire and the general cylindrical high-voltage socket form a connection path through a soldering method.

[0015] Among them, the epoxy resin solidified body is composed of a mixture of epoxy resin glue and a curing agent material.

[0016] Preferably, the high-voltage rectangular socket is used to connect an external high-voltage coaxial cable, and a silver plating layer is provided on the contact surface between the high-voltage rectangular socket and the external high-voltage coaxial cable.

[0017] Preferably, the general cylindrical high-voltage socket adopts a general socket with a withstand voltage greater than 10 KV / 4 mm.

[0018] Preferably, the general cylindrical high-voltage socket includes: a core-connected general cylindrical high-voltage socket and a ground-connected general cylindrical high-voltage socket;

[0019] The core-connected general cylindrical high-voltage socket and the ground-connected general cylindrical high-voltage socket are arranged in parallel; the core-connected general cylindrical high-voltage socket is used to connect the high-voltage power supply plug of an external withstand voltage tester and is connected in parallel with multiple high-voltage coaxial cables;

[0020] The ground-connected general cylindrical high-voltage socket is used to connect the ground plug of an external withstand voltage tester.

[0021] Preferably, physical locking devices are provided on the exteriors of the high-voltage rectangular socket and the general cylindrical high-voltage socket; the physical locking devices are provided with anti-misoperation protection covers and are equipped with locking indication signs.

[0022] Preferably, the auxiliary component is a nickel-plated steel needle.

[0023] It can be seen from the above technical solutions that, compared with the prior art, the technical solutions of the utility model have the following beneficial effects:

[0024] 1. The main body of the square structure is made of epoxy resin solid, which utilizes the excellent insulation performance of epoxy resin to ensure the electrical safety and structural stability of the equipment under high-voltage test environment.

[0025] 2. Based on the solidification characteristics of epoxy resin, the entire main body becomes a solid whole. The high-voltage rectangular socket, general cylindrical high-voltage socket, connecting wire and auxiliary components are all solidified inside the square structure main body, which not only reduces the potential failure points in the assembly process, but also improves the sealing and reliability of the equipment, and can effectively prevent the influence of external factors such as dust on the internal electrical components, thereby improving the test accuracy and the long-term stability of the equipment.

[0026] 3. The high-voltage rectangular socket is fixed by an auxiliary component (nickel-plated steel needle), which ensures the stable positioning of the socket during high-voltage tests and avoids test errors or safety hazards caused by socket displacement. And the outer layer of the connecting wire is wrapped with soft insulating rubber, enabling it to maintain good electrical performance under complex test conditions.

[0027] 4. The connecting wire and the general cylindrical high-voltage socket form a connection path through soldering. The soldering technology ensures the high reliability of the electrical connection. Compared with other connection methods (such as crimping), soldering reduces the contact resistance, improves the smoothness of current passing, and the soldering point is firm and not easily detached due to vibration or external force, thus ensuring the continuity and safety of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of the withstand voltage test equipment provided by the embodiment of the present invention;

[0030] Figure 2 It is a schematic connection diagram of the withstand voltage test of the withstand voltage test equipment provided by the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1;

[0033] As Figure 1 shown, this embodiment provides a withstand voltage test device applied to high-voltage coaxial cables, including: a square structure main body 1, a high-voltage rectangular socket 2, a general cylindrical high-voltage socket, a connecting wire 5, and auxiliary components;

[0034] The square structure main body 1 is an epoxy resin solidified body;

[0035] The high-voltage rectangular socket 2, the general cylindrical high-voltage socket, the connecting wire 5, and the auxiliary components are solidified inside the square structure main body 1;

[0036] The high-voltage rectangular socket 2 is fixedly connected to the auxiliary component;

[0037] The connecting wire 5 is the core and shell lead-out wire of the high-voltage rectangular socket 2, and the outer layer of the connecting wire 5 is wrapped with a soft insulating rubber; the connecting wire 5 and the general cylindrical high-voltage socket form a connection path through a soldering method. Among them, the resistance of the connection path is much less than 1Ω.

[0038] Through comprehensive optimization in aspects such as material selection, structural design, and electrical connection, this withstand voltage test device realizes high performance, high safety, high stability, and ease of use of the high-voltage test device, and can better be applicable to batch test scenarios with strict requirements for test accuracy and safety.

[0039] The following further elaborates on the above-mentioned various structures and related technical features in detail:

[0040] The inside of the square structure main body 1 may be provided with fine channels, which are arranged in a grid pattern; the fine channels are filled with inert gas. It can effectively balance the internal pressure, reduce the internal stress concentration caused by temperature changes, and further improve the insulation performance, stability, and service life of the device. The use of inert gas can also reduce internal moisture and corrosion, keep the inside dry, and improve the long-term reliability of the device.

[0041] The epoxy resin solidified body is composed of a mixture of epoxy resin glue and a curing agent material. A two-component glue is used and is made by step-by-step pouring in a pre-set mold. Its insulation performance can reach 10 KV / mm, and its hardness can reach Shore D80. The two-component glue includes: epoxy resin glue and a curing agent; the epoxy resin glue and the curing agent are mixed based on a preset ratio.

[0042] The ratio mixing of the two-component glue is based on a preset, ensuring that the cured material has the best mechanical strength and electrical performance, and improving the durability of the entire device.

[0043] The high-voltage rectangular socket 2 is used to connect the external high-voltage coaxial cable. The contact surface between the high-voltage rectangular socket and the external high-voltage coaxial cable is provided with a silver plating. It improves the conductivity and corrosion resistance, reduces the contact resistance, and ensures the stable transmission of high-voltage signals.

[0044] The general cylindrical high-voltage socket uses a general socket with a withstand voltage greater than 10 KV / 4 mm. The general cylindrical high-voltage socket includes: the core-connected general cylindrical high-voltage socket 4 and the grounded general cylindrical high-voltage socket 3. The core-connected general cylindrical high-voltage socket 4 connects the high-voltage power supply plug of the external withstand voltage tester and is connected in parallel with multiple high-voltage coaxial cables; the grounded general cylindrical high-voltage socket 3 connects the grounding plug of the external withstand voltage tester.

[0045] It can effectively cope with the high-voltage environment and ensure the test safety. The separately provided core-connected and grounded general cylindrical high-voltage sockets 3 are respectively used for the transmission of high-voltage signals and the grounding circuit. The design ensures the integrity of the test circuit and improves the system safety of the test.

[0046] The external of the high-voltage rectangular socket 2 and the general cylindrical high-voltage socket is provided with a physical locking device; the physical locking device is provided with a misoperation protection cover and is equipped with a locking indication mark. It not only prevents accidental unlocking caused by operation errors, but also intuitively tells the operator the current locking state through the locking indication mark, further improving the safety and convenience of device operation.

[0047] The auxiliary component is a nickel-plated steel needle with a specification of 1.5×70 mm. It fixes the high-voltage rectangular socket 2 when pouring epoxy resin. When the nickel-plated steel needle combines with epoxy resin, it can not only improve the corrosion resistance, but also enhance the stability and durability of the combination. In addition, although the thermal expansion coefficients of epoxy resin and metal are different, the thermal expansion coefficient of nickel is relatively moderate and has a good match with some epoxy resins, which helps to reduce the internal stress caused by temperature changes and reduce the risk of cracks or delamination.

[0048] Embodiment 2;

[0049] In this embodiment, the forming process of the square structure main body and the usage process of the withstand voltage testing equipment are specifically described.

[0050] The forming process of the square structure main body 1 includes:

[0051] Mold Preparation Stage: When designing the mold, in addition to the basic structural design, the layout of the micro-channels needs to be pre-planned. These channels should be distributed in a grid pattern, running through the main body of the cube structure, avoiding the positions of high-voltage rectangular sockets and auxiliary components to ensure the continuity and uniformity of the channels. At the same time, gas injection ports and exhaust holes are reserved on the mold for the introduction of inert gas and the removal of air in the subsequent steps.

[0052] First Pouring and Positioning of High-Voltage Rectangular Socket: Install and fix the mold, first pour 1 / 3 of the height of the epoxy resin mixture, and wait for it to initially solidify before positioning the high-voltage rectangular socket. When inserting the steel needles and sleeving the high-voltage rectangular socket, pay attention to keeping the channel positions unobstructed to ensure that gas can enter smoothly in the subsequent steps.

[0053] Laying Micro-Channels and Injecting Inert Gas: Before the second pouring, that is, after the high-voltage rectangular socket is fixed, along the reserved opening of the mold, lay the micro-pipeline along the predetermined path to form a micro-channel with a grid layout. After laying, use an inert gas (such as nitrogen) injection device to inject into the micro-channels through the gas injection port, and at the same time open the exhaust hole to discharge the air in the mold until it is filled with inert gas. During this process, a slight positive pressure can be appropriately applied to ensure that the gas completely fills the channels, and then close the gas injection port and exhaust hole.

[0054] Continue Pouring and Completion: After confirming that the inert gas is filled, continue to pour the epoxy resin mixture to 2 / 3 of the height according to the original plan, and then complete the remaining pouring steps. After the epoxy resin is completely solidified, remove the fixture, cut off the excess part of the steel needle, finally fill the mold completely and complete the solidification. After demolding, a micro-channel with a micro-grid layout has been formed inside the epoxy resin solid, and it is filled with inert gas, improving the insulation performance and long-term stability of the equipment.

[0055] Through the integration of the above steps, the formation of the epoxy resin solid is completed, providing better insulation protection and a more stable test environment for the withstand voltage test equipment.

[0056] As Figure 2 shown, the usage process of the withstand voltage test equipment 6 includes:

[0057] Before using the withstand voltage test equipment 6, it is necessary to connect the high-voltage power supply plug 9 and the grounding plug 10 of the withstand voltage tester 8 to ensure reliable connection. The withstand voltage tester 8 needs to be set in advance with the required high voltage and the high voltage application time. During the withstand voltage test, pay attention to observing the current value displayed by the withstand voltage tester 8 and the high voltage application situation of the high-voltage coaxial cable 7. When abnormal conditions occur, cut off the power supply in time to ensure the safety of the equipment and personnel.

[0058] When performing a withstand voltage test on the high-voltage coaxial cable 7, first confirm that the high-voltage power supply plug 9 and the grounding plug 10 of the withstand voltage tester 8, the test equipment, are reliably connected. Then turn on the power supply, turn on the power supply switch of the withstand voltage tester 8, and set the required high voltage and the high-voltage application time.

[0059] Insert the high-voltage power supply plug 9 of the withstand voltage tester 8 into the core common cylindrical high-voltage socket 4 of a withstand voltage test equipment, and insert the grounding plug 10 into the corresponding grounding common cylindrical high-voltage socket 3. Insert one end of the high-voltage coaxial cable 7 into the high-voltage rectangular socket of this withstand voltage test equipment, and the other end into the high-voltage rectangular socket of another withstand voltage test equipment.

[0060] Start the withstand voltage tester 8, apply high voltage to both the positive and negative ends of the high-voltage coaxial cable 7, and observe for corona and arcing phenomena. After reaching the set high-voltage application time, turn off the withstand voltage tester 8 and put away the equipment. If no abnormal phenomena such as corona and arcing occur during the high-voltage application of the high-voltage coaxial cable 7, it can be determined that the cable withstand voltage test is qualified.

[0061] In the technical solution of this application, the withstand voltage test equipment integrates key components such as high-voltage rectangular sockets and common cylindrical high-voltage sockets through an integrated cube epoxy resin solid structure, realizing efficient withstand voltage testing of high-voltage coaxial cables.

[0062] It utilizes the high strength and excellent insulation performance of epoxy resin to provide a stable and safe operating platform for the test equipment; the design of the connecting wires wrapped with soft insulating rubber not only strengthens the mechanical protection of the wires but also ensures the long-term reliability of the electrical connection; the fixed connection of the auxiliary components to the high-voltage rectangular socket and the connection path of soldering jointly ensure the stability of signal transmission and the accuracy of test results during the test. It significantly improves the durability, operation convenience and test efficiency of the test equipment, while reducing potential safety hazards, and is especially suitable for scenarios with strict requirements and batch testing.

[0063] In this specification, each embodiment is described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts between the embodiments, reference can be made to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and reference can be made to the method part for the relevant parts.

[0064] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A withstand voltage test device for high voltage coaxial cable, characterized in that: include: Square structure body, high voltage rectangular socket, universal cylindrical high voltage socket, connecting wires and auxiliary components; The square structure body is a solidified epoxy resin body; The high-voltage rectangular socket, the universal cylindrical high-voltage socket, the connecting wires and the auxiliary components are solidified inside the square structural body; The high voltage rectangular socket is fixedly connected to the auxiliary element; The connecting wire is the core and shell lead wire of the high-voltage rectangular socket, and the outer layer of the connecting wire is wrapped with a soft insulating rubber. The connecting wire and the universal cylindrical high-voltage socket form a connection path through soldering.

2. A withstand voltage test device for high voltage coaxial cable according to claim 1, characterized in that: The epoxy resin solidified body is formed by mixing epoxy resin glue and curing agent material.

3. The withstand voltage test equipment for high voltage coaxial cable according to claim 1, characterized in that: The high-voltage rectangular socket is used to connect an external high-voltage coaxial cable, and a silver-plated layer is provided on the contact surface between the high-voltage rectangular socket and the external high-voltage coaxial cable.

4. The withstand voltage test equipment for high voltage coaxial cable according to claim 1, characterized in that: The universal cylindrical high-voltage socket adopts a universal socket with a withstand voltage greater than 10KV / 4mm.

5. The withstand voltage test equipment for high voltage coaxial cable according to claim 1, characterized in that: The universal cylindrical high-voltage socket comprises: a core-connected universal cylindrical high-voltage socket and a grounded universal cylindrical high-voltage socket; The core-connecting universal cylindrical high-voltage socket and the grounding universal cylindrical high-voltage socket are arranged in parallel; the core-connecting universal cylindrical high-voltage socket is used to connect the high-voltage power-on plug of an external withstand voltage tester and is connected in parallel with multiple high-voltage coaxial cables; The grounded universal cylindrical high voltage socket is used to connect the grounding plug of an external withstand voltage tester.

6. The withstand voltage test equipment for high voltage coaxial cable according to claim 1, characterized in that: The high-voltage rectangular socket and the universal cylindrical high-voltage socket are provided with a physical locking device on the outside; the physical locking device is provided with an anti-misoperation protection cover and is equipped with a locking indication mark.

7. The withstand voltage test equipment for high voltage coaxial cable according to claim 1, characterized in that: The auxiliary element is a nickel-plated steel needle.

Images