Partial discharge module

Abstract

The utility model relates to partial discharge detection technical field discloses a kind of partial discharge module, including module shell, the one end of module shell is fixedly installed for being connected with optical fiber connection seat of optical fiber, the other end of module shell is provided with cable connection groove for being connected with cable, partial discharge module two ends are respectively provided optical fiber protection piece and cable guide piece;Optical fiber protection piece is made of protection frame and the plunger of the sliding connection with protection frame, when inserting optical fiber, plunger is at first position, gap for the insertion of optical fiber is formed at this time, after inserting optical fiber, plunger is slid from first position to second position, plunger is pressed tightly on the multiple optical fibers in protection frame, not only facilitate the installation of optical fiber, also ensure that optical fiber is in fixed state in movement stage, cable guide piece accurately guides connection power supply and control cable, prevent cable from being damaged by bending due to pulling or extrusion after installation.

Description

Technical Field

[0001] This utility model relates to the field of partial discharge detection technology, and in particular to a partial discharge module. Background Technology

[0002] A partial discharge module (PD module) is a modular hardware unit for partial discharge (PD) detection. It is designed to capture, process, and analyze partial discharge signals that occur in power equipment (such as transformers, switchgear, cables, motors, etc.). Essentially, a partial discharge module is a signal acquisition and processing unit with internal circuitry specifically designed for collecting and processing digital partial discharge signals. External sensors (such as high-frequency current transformers (HFCTs), ultrasonic sensors (AEs), or ultra-high frequency sensors (UHFs), which are independent devices and not part of the module itself) acquire electrical or non-electrical signals generated by partial discharge. Subsequently, the internal circuitry of the partial discharge module receives these signals and performs amplification, filtering, analog-to-digital conversion, and digital signal processing. Due to the high frequency and weak energy of partial discharge signals, and the complex electromagnetic environment at power distribution sites, the processing results are transmitted long distances to a host computer via optical fiber. These modules are widely used in power system condition monitoring and fault early warning, and are core components of smart grids, substation automation, and predictive maintenance of industrial equipment. Partial discharge modules, in particular, serve as intelligent monitoring modules integrated into ring main units, undertaking key functions such as distribution network equipment condition perception, fault early warning, and intelligent operation and maintenance. They are widely deployed in urban power distribution networks, industrial parks, rail transit, and data centers to improve the reliability and operational efficiency of power distribution networks.

[0003] Structurally, one end of the partial discharge module is equipped with a fiber optic connector for connecting to an external optical fiber. The processed results are then transmitted over long distances to a host computer (such as a monitoring backend or data server). Fiber optic transmission, with its advantages of strong anti-electromagnetic interference capability, long transmission distance, high bandwidth, and good electrical isolation, effectively ensures the integrity and accuracy of weak discharge signals during long-distance transmission, thereby achieving high-speed, long-distance, and highly reliable signal output. The other end of the partial discharge module has a cable connection slot for connecting external power cables and / or control cables. This cable primarily provides a stable and reliable power supply to the partial discharge module and also supports short-range communication with local monitoring equipment (such as RS485, CAN, etc.), facilitating equipment configuration, status queries, or low-speed data uploads. This meets the needs of on-site debugging and short-range communication. The fiber optic cable and the control cable complement each other, together forming a complete signal acquisition and transmission system.

[0004] However, in actual use, existing partial discharge modules need to be installed with multiple optical fibers and cables. Due to the large number of optical fibers and their centralized placement, the wiring is messy and prone to bending. Once the optical fiber is bent, it will affect the quality of optical signal transmission. At the same time, if the cable is subjected to external pulling or squeezing after installation, it is very easy to bend and be damaged, causing the partial discharge module to lose its working power, affecting the system stability and data reliability. Utility Model Content

[0005] The technical problem to be solved by this utility model is that existing partial discharge modules need to be installed with multiple optical fibers and cables at the same time. Due to the large number of optical fibers and their centralized placement, the wiring is prone to be messy. Once the optical fiber is bent, it will affect the quality of optical signal transmission. At the same time, if the cable is subjected to external pulling or squeezing after installation, it is very easy to be bent and damaged.

[0006] To address the aforementioned technical problems, this utility model provides a partial discharge module, including a module housing. One end of the module housing is fixedly fitted with an optical fiber connector for connection to an optical fiber, and the other end of the module housing is provided with a cable connection groove for connection to a cable. The partial discharge module also includes:

[0007] The fiber optic protection component includes a protective frame and pressure bars. The protective frame is connected to the end of the module housing facing the fiber optic connector. The top of the protective frame is provided with a receiving surface. The pressure bars are spaced above the receiving surface and are slidably connected to the protective frame.

[0008] The pressure bar has a first position and a second position. When the pressure bar is in the first position, the gap between the pressure bar and the receiving surface forms a channel for the optical fiber to be inserted. When the pressure bar is in the second position, the pressure bar presses the optical fiber located on the receiving surface.

[0009] A cable guide is located at the end of the module housing facing the cable connection groove. The cable guide is used to guide the cable.

[0010] Preferably, the receiving surface is arc-shaped.

[0011] Preferably, both sides of the receiving surface are provided with upwardly extending extension pieces, and each extension piece is provided with an adjustment groove, and the two ends of the pressure rod are respectively slidably disposed in each adjustment groove.

[0012] Preferably, there are two pairs of adjustment slots, which are respectively located at both ends of the extension piece. There are two pressure rods, and the two ends of each pressure rod are slidably located in each pair of adjustment slots.

[0013] Preferably, each adjustment groove is a U-shaped groove.

[0014] Preferably, a snap-fit ​​base is fixed at one end of the module housing facing the fiber optic connector, and a snap-fit ​​plate is provided on the side of the protective frame facing the module housing, with the snap-fit ​​plate engaging with the snap-fit ​​base.

[0015] Preferably, the bottom of the snap-fit ​​plate has a chamfer for avoidance.

[0016] Preferably, the cable guide includes a mounting plate, an avoidance hole is provided on the mounting plate at the position corresponding to the cable connection groove, a guide tube is provided on the mounting plate, and a first chamfer is provided at the end of the guide tube away from the mounting plate.

[0017] Preferably, the mounting plate is provided with multiple partition plates at horizontal intervals. The multiple partition plates are located on both sides of the mounting plate and between two adjacent clearance holes. A positioning tube coaxial with the clearance hole is provided between two adjacent partition plates. The end of the positioning tube away from the clearance hole is connected to the guide tube and communicates with each other.

[0018] Preferably, each partition plate is provided with a connecting post extending toward the positioning tube, and the outer wall of the positioning tube is fixedly connected to the connecting post.

[0019] Compared with the prior art, the partial discharge module of this utility model has the following advantages:

[0020] The partial discharge module provided in this embodiment of the invention is equipped with fiber optic protection components and cable guide components at both ends. The fiber optic protection component consists of a protective frame and a pressure rod slidably connected to the protective frame. When inserting the fiber optic cable, the pressure rod is in the first position, which forms a gap to facilitate fiber insertion. After inserting the fiber optic cable, the pressure rod is slid from the first position to the second position, pressing the multiple fibers located on the protective frame. This not only facilitates fiber optic cable installation but also ensures that the fiber optic cable is in a fixed state during operation, forming a neat and orderly guide for the fiber optic cable. This avoids signal attenuation or interruption caused by bending of the fiber optic cable, ensuring high fidelity and anti-interference performance when weak discharge signals are transmitted through the fiber optic cable. At the same time, the cable guide component accurately guides the power supply and control cables, preventing bending damage to the cables due to pulling or squeezing during operation after installation. This not only significantly improves the neatness of on-site wiring but also enhances the long-term operational reliability and accuracy of measurement data of the partial discharge module in complex electromagnetic environments such as ring main units. Attached Figure Description

[0021] Figure 1 This is a first perspective structural schematic diagram of the partial discharge module provided in a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the second perspective structure of the partial discharge module provided in a preferred embodiment of the present invention;

[0023] Figure 3This is a three-dimensional structural diagram of the fiber optic protection mechanism and the clamping and positioning mechanism of the partial discharge module provided in the preferred embodiment of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the cable guiding mechanism of the partial discharge module provided in a preferred embodiment of the present invention.

[0025] In the diagram, 1. Module housing; 2. Fiber optic connector; 3. Cable connection groove; 4. Cable guide; 5. Fiber optic protection; 6. Receiving surface; 7. Snap-fit ​​base; 8. Protective frame; 9. Extension piece; 10. Snap-fit ​​plate; 11. Chamfer; 12. Adjustment groove; 13. Pressure rod; 14. Limiting piece; 15. Mounting plate; 16. Divider plate; 17. Locking piece; 18. Locking bolt; 19. Clearance hole; 20. Connecting post; 21. Positioning tube; 22. Guide tube. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] like Figures 1 to 4 As shown, a partial discharge module according to a preferred embodiment of this utility model includes a module housing 1. One end of the module housing 1 is fixedly installed with an optical fiber connector 2 for connecting to an optical fiber, and the other end of the module housing 1 is provided with a cable connection groove 3 for connecting to a cable. The partial discharge module also includes: an optical fiber protection component 5, including a protection frame 8 and a pressure rod 13. The protection frame 8 is connected to the end of the module housing 1 facing the optical fiber connector 2. The top of the protection frame 8 is provided with a receiving surface 6. The pressure rod 13 is spaced above the receiving surface 6 and is slidably connected to the protection frame 8. The pressure rod 13 has a first position and a second position. When the pressure rod 13 is in the first position, the gap between the pressure rod 13 and the receiving surface 6 forms a channel for the optical fiber to pass through. When the pressure rod 13 is in the second position, the pressure rod 13 presses the optical fiber located on the receiving surface 6. A cable guide 4 is provided at the end of the module housing 1 facing the cable connection groove 3 and is used to guide the cable.

[0031] The partial discharge module provided in this embodiment of the invention is provided with fiber optic protection component 5 and cable guide component 4 at both ends. The fiber optic protection component 5 consists of a protective frame 8 and a pressure rod 13 slidably connected to the protective frame 8. When inserting the fiber optic cable, the pressure rod 13 is in the first position, which forms a gap to facilitate fiber insertion. After inserting the fiber optic cable, the pressure rod 13 is slid from the first position to the second position, and the pressure rod 13 presses down on the multiple fibers located on the protective frame 8. This not only facilitates the installation of the fiber optic cable, but also ensures that the fiber optic cable is in a fixed state during operation, forming a regular guide for the fiber optic cable and avoiding signal attenuation or interruption caused by bending of the fiber optic cable. This ensures high fidelity and anti-interference when weak discharge signals are transmitted through the fiber optic cable. At the same time, the cable guide component 4 accurately guides the power supply and control cables, preventing bending damage to the cables due to pulling or squeezing during operation after installation. This not only significantly improves the neatness of the on-site wiring, but also enhances the long-term operational reliability and accuracy of measurement data of the partial discharge module in the complex electromagnetic environment of power distribution sites such as ring main units.

[0032] Specifically, the receiving surface 6 is arc-shaped. By designing the receiving surface 6 at the top of the protective frame 8 as an arc-shaped surface, the sharp corners of the traditional rectangular protective frame 8 are eliminated. This allows the optical fiber to naturally conform to the arc-shaped surface when it is pressed and fixed by the pressure rod 13. This fundamentally avoids scratches, indentations, and even micro-cracks caused by repeated friction or pressure between the optical fiber sheath and sharp corners, significantly reducing the risk of optical fiber transmission loss and signal attenuation. At the same time, the arc-shaped surface guides the optical fiber to make a natural transition, preventing the optical fiber from bending or breaking due to accidental pulling or vibration during installation or operation. This ensures that the high-frequency weak discharge signal always maintains high fidelity and anti-interference stability in long-distance optical transmission.

[0033] Specifically, both sides of the receiving surface 6 are provided with upwardly extending extension pieces 9, and each extension piece 9 is provided with an adjustment groove 12. The two ends of the pressure rod 13 are respectively slidably disposed in each adjustment groove 12. The area between the two extension pieces 9 forms the optical fiber installation area. The extension pieces 9 form a physical barrier for the optical fiber installation area, effectively isolating the intrusion of external foreign objects and the risk of mechanical compression. In addition, the extension pieces 9 also form a lateral limiting component for the optical fiber, avoiding lateral displacement of the optical fiber during installation and operation. Furthermore, the extension pieces 9 extend upward to form the installation reference structure of the adjustment groove 12.

[0034] Specifically, the extension piece 9 and the protective frame 8 are integrally molded.

[0035] Specifically, there are two pairs of adjustment slots 12, which are respectively set at both ends of the extension plate 9. There are two pressure rods 13, and the two ends of each pressure rod 13 are slidably set in each pair of adjustment slots 12. This forms a bidirectional constraint and fixing mechanism for the optical fiber, which significantly improves the structural stability and anti-interference ability of the optical fiber during operation. The fixed structure at both ends enables the pressure rods 13 to evenly distribute the dynamic stress caused by vibration, thermal expansion and contraction or external tension commonly found in the ring main unit during operation.

[0036] Specifically, each adjustment slot 12 is a U-shaped slot, and the two long side tracks of the U-shaped slot are parallel to each other; thus, when the pressure rod 13 is located on the long side track of the upper part of the U-shaped slot, the pressure rod 13 is in the first position, forming a gap for optical fiber insertion; when the pressure rod 13 is located on the long side track of the lower part of the U-shaped slot, the pressure rod 13 is in the second position, and the pressure rod 13 presses the optical fiber located on the protective frame 8.

[0037] Specifically, the extension direction of the two long side rails of the U-shaped groove is parallel to the tangent direction of the arc-shaped bearing surface at the top of the protective frame 8 at the installation position of the U-shaped groove. The U-shaped opening of the U-shaped groove faces away from the module housing 1, so that the long side rails of each U-shaped groove have a downward tilt angle relative to the horizontal line. That is, the height of the two long side rails of the U-shaped groove at the U-shaped opening end is lower than the height away from the U-shaped opening end. The pressure rod 13 is located inside the U-shaped groove and is locked at the U-shaped opening end of the two long side rails under the action of gravity. The pressure rod 13 can be fixed in the first position and the second position inside the U-shaped groove without the need for additional locking parts.

[0038] Specifically, each pressure rod 13 has a limiting piece 14 fixedly connected to both ends. The size of the limiting piece 14 is larger than the size of the adjustment groove 12, thereby limiting both ends of the pressure rod 13 and preventing the pressure rod 13 from coming out of the adjustment groove 12.

[0039] Specifically, rubber pads are provided on the outside of the pressure rod 13 and on the receiving surface 6. The rubber pads on the pressure rod 13 and the receiving surface 6 can prevent excessive compression and damage to the optical fiber when it is squeezed and limited.

[0040] Specifically, a snap-fit ​​seat 7 is fixed at one end of the module housing 1 facing the fiber optic connector 2, and a snap-fit ​​plate 10 is provided on the side of the protective frame 8 facing the module housing 1. The snap-fit ​​plate 10 is snapped into the snap-fit ​​seat 7. The connection between the protective frame 8 and the module housing 1 is achieved by snapping the snap-fit ​​plate 10 into the snap-fit ​​seat 7, which improves the efficiency of on-site installation and the convenience of maintenance, while ensuring the stability of the connection.

[0041] Specifically, the bottom of the snap-fit ​​plate 10 is provided with a chamfer 11, which is arc-shaped. The arc-shaped chamfer 11 provides a smooth guide during the insertion of the snap-fit ​​plate 10 into the snap-fit ​​seat 7, effectively guiding the snap-fit ​​plate 10 to automatically center and smoothly slide into the snap-fit ​​seat 7, thereby improving installation efficiency.

[0042] Specifically, the cable guide 4 includes a mounting plate 15. A clearance hole 19 is provided on the mounting plate 15 at a position corresponding to the cable connection groove 3. A guide tube 22 is provided on the mounting plate 15, with a first chamfer at the end of the guide tube 22 away from the mounting plate 15. The clearance hole 19 matches the position of the cable connection groove 3, enabling rapid cable insertion and alignment. The guide tube 22 provides a stable and rigid path for the cable, preventing sharp bends, twisting, or compression damage. Furthermore, the first chamfer at the end of the guide tube 22 away from the mounting plate 15 forms a smooth transition surface, eliminating the sharp corner at the end of the guide tube 22 away from the mounting plate 15. This allows the cable to extend from the cable connection groove 3 towards the guide tube 22 until it exits the guide tube 22, at which point the cable's outer surface contacts the first chamfer, avoiding the risk of outer sheath wear, insulation damage, or internal wire breakage caused by friction with the sharp corner when the cable is pulled.

[0043] Specifically, the mounting plate 15 is horizontally spaced with multiple partition plates 16. The partition plates 16 are located on both sides of the mounting plate 15 and between two adjacent clearance holes 19. A positioning tube 21 coaxial with the clearance hole 19 is provided between two adjacent partition plates 16. The end of the positioning tube 21 away from the clearance hole 19 is connected to the guide tube 22. Each partition plate 16 is located on both sides of each clearance hole 19, so that each clearance hole 19 is located in an independent installation area, effectively preventing adjacent cables from tangling, squeezing or rubbing against each other. In addition, each partition plate 16 located on both sides of each clearance hole 19 also forms a physical protective barrier for the clearance hole 19, avoiding external pressure from directly acting on the cable connection point, thereby reducing the risk of insulation wear and wire breakage. Furthermore, the partition plates 16 also form the installation base for the positioning tube 21, ensuring that the positioning tube 21 is strictly coaxially aligned with the clearance hole 19, guiding the cable to pass into the cable connection groove 3 along a straight path without deviation.

[0044] Specifically, each partition plate 16 is provided with a connecting post 20 extending toward the positioning tube 21, and the outer wall of the positioning tube 21 is fixedly connected to the connecting post.

[0045] Specifically, the positioning tube 21 has a second chamfer on the side away from the guide tube 22. The second chamfer on the positioning tube 21 has the same function as the first chamfer on the guide tube 22, which also eliminates the sharp corners on the edge of the positioning tube 21, avoiding the risk of outer sheath wear, insulation layer damage or internal wire breakage caused by friction between the cable and the sharp corners when the cable is pulled.

[0046] Specifically, locking plates 17 are fixedly connected to both sides of the mounting plate 15. The locking plates 17 have light holes, and the corresponding positions on the module housing 1 have threaded holes. The mounting plate 15 can be fixedly installed on the partial discharge module housing 1 by passing the locking bolts 18 through both the light holes and the threaded holes.

[0047] The working process of this utility model is as follows: The protective frame 8 is snapped into the snap-fit ​​seat 7 on the module housing 1 via the snap-fit ​​plate 10. The arc-shaped chamfer 11 at the bottom of the snap-fit ​​plate 10 provides smooth guidance during insertion, guiding the snap-fit ​​plate 10 to automatically center and smoothly snap into place, thus achieving a stable connection between the protective frame 8 and the module housing 1. Subsequently, during the fiber optic installation stage, the operator places the pressure rod 13 in the first position on the upper part of the U-shaped groove. At this time, because the opening of the U-shaped groove faces away from the module housing 1 and the long side track is inclined downward along the arc-shaped bearing surface 6 of the protective frame 8, the pressure rod 13 is stably stationed in the first position under the action of gravity, forming a sufficient insertion gap in the fiber optic installation area formed between the two extension pieces 9, and arranging multiple optical fibers neatly on the arc-shaped top surface of the protective frame 8. After the fiber insertion is completed, the pressure rod 13 is slid downward along the long side track of the U-shaped groove to the second position, and automatically locks at the U-shaped opening end under the action of gravity, pressing... The limiting plates 14 at both ends of the rod 13 prevent it from coming off. At the same time, the pressure rod 13 and the rubber pad on the bearing surface 6 work together to apply pressure evenly and firmly press the optical fiber onto the bearing surface 6. The arc-shaped bearing surface 6 eliminates sharp corners and avoids damage to the optical fiber due to friction with sharp corners. Meanwhile, at the cable end, the mounting plate 15 of the cable guide 4 is fixed to the module housing 1 by the locking bolt 18. The cable is then passed through the guide tube 22, the positioning tube 21 and the clearance hole 19 in sequence and connected to the cable connection groove 3. The physical barrier formed by the partition plate 16 keeps each cable independently located in the installation area defined by the adjacent partition plates 16, effectively preventing adjacent cables from getting tangled. The guide tube 22 provides a rigid path to guide the cable to extend outward. During the movement, the first chamfer on the guide tube 22 and the second chamfer on the positioning tube 21 eliminate the sharp corners of their edges and avoid damage to the cable due to friction with sharp corners.

[0048] In other embodiments, the adjustment groove 12 is a vertically extending long groove. In this case, the pressure rod 13 can only be self-locked at the bottom of the long groove under the action of gravity, that is, at the second position. A locking member is provided at the top of the long groove, which is used to lock the pressure rod 13 at the top of the long groove, that is, at the first position.

[0049] In other embodiments, the protective frame 8 is integrally formed with the module housing 1.

[0050] In other embodiments, the mounting plate 15 is integrally formed with the module housing 1.

[0051] In summary, the partial discharge module provided in this embodiment of the invention is equipped with fiber optic protection components and cable guide components at both ends. The fiber optic protection component consists of a protective frame and a pressure rod slidably connected to the protective frame. When inserting the fiber optic cable, the pressure rod is in the first position, which forms a gap that facilitates the insertion of the fiber optic cable. After inserting the fiber optic cable, the pressure rod is slid from the first position to the second position, pressing the multiple fibers located on the protective frame. This not only facilitates the installation of the fiber optic cable but also ensures that the fiber optic cable is in a fixed state during operation, forming a regular guide for the fiber optic cable and avoiding signal attenuation or interruption caused by bending of the fiber optic cable. This ensures high fidelity and anti-interference performance when weak discharge signals are transmitted through the fiber optic cable. At the same time, the cable guide component accurately guides the power supply and control cables, preventing bending damage to the cables due to pulling or squeezing during operation after installation. This not only significantly improves the neatness of the on-site wiring but also enhances the long-term operational reliability and accuracy of measurement data of the partial discharge module in the complex electromagnetic environment of power distribution sites such as ring main units.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A partial discharge module, comprising a module housing (1), wherein an optical fiber connector (2) for connecting to an optical fiber is fixedly installed at one end of the module housing (1), and a cable connection groove (3) for connecting to a cable is provided at the other end of the module housing (1), characterized in that, The partial discharge module also includes: The fiber optic protective component (5) includes a protective frame (8) and a pressure rod (13). The protective frame (8) is connected to one end of the module housing (1) facing the fiber optic connector (2). The top of the protective frame (8) is provided with a receiving surface (6). The pressure rod (13) is spaced above the receiving surface (6). The pressure rod (13) is slidably connected to the protective frame (8). The pressure bar (13) has a first position and a second position. When the pressure bar (13) is in the first position, the gap between the pressure bar (13) and the receiving surface (6) forms a channel for optical fiber insertion. When the pressure bar (13) is in the second position, the pressure bar (13) presses the optical fiber located on the receiving surface (6). A cable guide (4) is provided at one end of the module housing (1) facing the cable connection groove (3), and the cable guide (4) is used to guide the cable.

2. A partial discharge module according to claim 1, characterized in that, The receiving surface (6) is arc-shaped.

3. A partial discharge module according to claim 1, characterized in that, Both sides of the receiving surface (6) are provided with upwardly extending extension pieces (9), and each extension piece (9) is provided with an adjustment groove (12). The two ends of the pressure rod (13) are respectively slidably disposed in each adjustment groove (12).

4. A partial discharge module according to claim 3, characterized in that, The adjustment groove (12) is provided in two pairs, and the two pairs of adjustment grooves (12) are respectively provided at both ends of the extension piece (9). There are two pressure rods (13), and the two ends of each pressure rod (13) are respectively slidably provided in each pair of adjustment grooves (12).

5. A partial discharge module according to claim 4, characterized in that, Each of the adjustment grooves (12) is a U-shaped groove.

6. A partial discharge module according to claim 1, characterized in that, The module housing (1) has a snap-fit ​​seat (7) fixed at one end facing the optical fiber connector (2), and the protective frame (8) has a snap-fit ​​plate (10) on the side facing the module housing (1), and the snap-fit ​​plate (10) is snapped into the snap-fit ​​seat (7).

7. A partial discharge module according to claim 6, characterized in that, The bottom of the snap-fit ​​plate (10) is provided with a chamfer (11) to avoid obstruction.

8. A partial discharge module according to claim 1, characterized in that, The cable guide (4) includes a mounting plate (15), an avoidance hole (19) is provided on the mounting plate (15) at the position corresponding to the cable connection groove (3), a guide tube (22) is provided on the mounting plate (15), and a first chamfer is provided at the end of the guide tube (22) away from the mounting plate (15).

9. A partial discharge module according to claim 8, characterized in that, The mounting plate (15) is provided with a plurality of partition plates (16) at horizontal intervals. The plurality of partition plates (16) are respectively located on both sides of the mounting plate (15) and between two adjacent clearance holes (19). A positioning tube (21) coaxial with the clearance hole (19) is provided between two adjacent partition plates (16). The end of the positioning tube (21) away from the clearance hole (19) is connected to the guide tube (22) and communicates with each other.

10. A partial discharge module according to claim 9, characterized in that, Each of the partition plates (16) is provided with a connecting post (20) extending toward the positioning tube (21), and the outer wall of the positioning tube (21) is fixedly connected to the connecting post (20).

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