An omnidirectional ultra-high frequency partial discharge sensing device

Abstract

This invention relates to the field of substation monitoring equipment, specifically to a novel omnidirectional ultra-high frequency partial discharge (UHF) sensor. The sensor includes a housing with a downward-opening cavity. A mounting bracket is slidably mounted within the housing. The mounting bracket includes an upper partition and a lower partition, each with a connecting plate for connecting the upper and lower partitions. The upper and lower partitions divide the cavity into a cable placement cavity and an installation cavity. The cable placement cavity contains transmission lines that connect to electrical components in the installation cavity. A protective cover covers the bottom surface of the lower partition, and the mounting bracket also has a connecting mechanism for connecting the protective cover and the mounting bracket. This invention, by providing independent cable placement and installation cavities within the housing, prevents dust and rainwater from entering the installation cavity when the protective cover is damaged, thereby significantly improving the operational stability of the novel omnidirectional UHF partial discharge sensor.

Description

Technical Field

[0001] This invention relates to the field of substation monitoring equipment, and in particular to an omnidirectional ultra-high frequency partial discharge sensing device. Background Technology

[0002] An omnidirectional ultra-high frequency partial discharge sensor, or UHF sensor for short, is a power equipment monitoring device primarily used to detect and analyze partial discharge phenomena in power equipment. It can capture and analyze ultra-high frequency electromagnetic wave signals generated by partial discharges within power equipment, thereby enabling monitoring of the equipment's condition and fault diagnosis.

[0003] Current omnidirectional ultra-high frequency (UHF) partial discharge sensors typically include a broadband high-frequency antenna, a preamplifier, a filter, and a transmission line. The broadband high-frequency antenna is used to receive UHF electromagnetic wave signals generated by partial discharge within power equipment. The antenna is usually designed to be omnidirectional, covering a large monitoring range and ensuring that signals from different directions can be effectively received.

[0004] The preamplifier amplifies the received signal initially to improve its signal-to-noise ratio. Filters can be selected to filter different frequency bands as needed, ensuring that only useful partial discharge signals are retained. Transmission lines are used to transmit the processed signal to the monitoring host or data analysis system.

[0005] Currently, the installation of omnidirectional UHF partial discharge sensors typically involves housing the broadband high-frequency antenna, preamplifier, filter, and transmission line within a casing, with a protective cover installed below the casing. While this method allows for the installation of the omnidirectional UHF partial discharge sensor, in practical use, the sensor requires regular maintenance. Since the casing and protective cover are usually bolted together, loosening the bolts during maintenance is inconvenient. Furthermore, housing the broadband high-frequency antenna, preamplifier, filter, and transmission line within the casing allows external dust and rainwater to easily enter and cause malfunctions in these components if the protective cover is damaged.

[0006] Some existing technologies attempt to solve the above problems, but such improved solutions suffer from complex structures and large volumes. Summary of the Invention

[0007] The purpose of this invention is to provide an omnidirectional ultra-high frequency partial discharge sensing device.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] An omnidirectional ultra-high frequency partial discharge sensing device includes:

[0010] An outer shell, wherein a cavity with an opening facing downwards is formed in the outer shell;

[0011] The mounting bracket, which is slidably disposed in the outer casing, includes an upper partition and a lower partition, and a connecting plate disposed on and directly connected to the upper and lower partitions. The upper and lower partitions divide the cavity into a cable placement cavity and an installation cavity. The cable placement cavity is provided with a transmission line that is connected to the electrical components in the installation cavity. The bottom surface of the lower partition is covered with a protective cover, which is integrated with the mounting bracket.

[0012] The mounting bracket also includes a mounting plate and a sealing plate. The upper partition, lower partition, and sealing plate are arranged in parallel, and a mounting cavity is formed between the upper partition, lower partition, and connecting plate. The sealing plate is located above the upper partition and connected to the upper partition. The mounting plate is located between the upper partition and the lower partition and is connected to the sealing plate through a connecting component passing through the upper partition. The lower partition is provided with a mounting sleeve extending into the mounting cavity. The end of the mounting sleeve is connected to the mounting plate, and the side of the inner wall of the end is provided with multiple fixing seats. The fixing seats are provided with fixing seat slots facing the upper partition. The slots are only open on one side facing the upper partition. A cable placement cavity is formed between the sealing plate and the outer casing. Electrical components, including a preamplifier and a filter, are arranged in the mounting cavity.

[0013] The protective cover includes a cover body and a connecting rod disposed on the cover body. The lower end of the connecting rod is connected to the cover body, and the upper end is provided with connecting blocks of the same number as the fixed seats. The connecting blocks extend radially outward along the connecting rod, and a locking block that mates with the locking slot of the fixed seat is provided on the side facing the lower partition. A second spring is also provided on the inner side of the end of the mounting sleeve. One end of the second spring is supported on the inner wall of the bottom surface of the end of the mounting sleeve, and the other end is supported to the upper end of the connecting rod to drive the connecting rod to move axially to the side of the lower partition to insert the locking block into the locking slot of the fixed seat. During the rotation of the connecting rod around the axis, the mounting bracket is driven to rotate through the engagement of the locking block and the locking slot of the fixed seat.

[0014] The mounting bracket is fixed by a mounting bracket fixing mechanism provided on the outer shell. The mounting bracket fixing mechanism includes at least two sets of upper blind holes and lower blind holes, which are provided on the inner wall of the outer shell and spaced apart along the height direction of the outer shell. A mounting groove is provided on the upper end face of the upper partition, and a sealing plate is provided in the mounting groove. A mounting groove side through hole is provided on the side wall of the mounting groove, and a first limiting post is slidably provided in the mounting groove side through hole. A mechanism in the mounting groove is provided to push the first limiting post into the upper or lower blind hole to secure the mounting bracket. The bracket is fixed by a first spring; the end of the first limiting post away from the upper blind hole is provided with a first strip plate, and the upper end face of the first strip plate is provided with a first protrusion; the bottom end face of the mounting groove is provided with an arc-shaped through hole, the mounting cavity is provided with a mounting plate, the mounting plate is provided with an arc-shaped piece that can rotate in the arc-shaped through hole, the end of the arc-shaped piece extends into the mounting groove through the arc-shaped through hole, the end of the arc-shaped piece extending into the mounting groove is provided with a guide plate, and the guide plate is provided with a first arc-shaped block for pushing the first protrusion when rotating the arc-shaped piece so that the first limiting post disengages from the upper blind hole or the lower blind hole.

[0015] The bottom end of the mounting bracket is provided with an annular groove that fits with the cover body with a gap. The lower end of the connecting rod passes through the cover body and is provided with an annular plate on the part located on the outside of the cover body. The annular plate is used to push the end of the cover body into the annular groove when the locking block abuts into the fixing seat groove.

[0016] The angle between any point on any card block and any point on an adjacent card block, about the axis of the connecting rod, is projected into the plane perpendicular to the axis of the connecting rod. This angle is greater than the angle between any two points on any fixed base, about the axis of the connecting rod, in any plane perpendicular to the axis of the connecting rod.

[0017] The angle between any point on any fixed seat and any point on an adjacent fixed seat, about the axis of the connecting rod, projected onto any plane perpendicular to the axis of the connecting rod, is greater than the angle between any two points on any block, about the axis of the connecting rod, projected onto any plane perpendicular to the axis of the connecting rod.

[0018] The end of the connecting rod extending out of the cover body is also provided with knurling.

[0019] The mounting sleeve is also provided with a spring baffle, which is connected to a second spring and slides along the axis of the mounting sleeve.

[0020] The upper partition plate has a through hole that penetrates the sealing plate and the mounting groove. The transmission line has a transmission line connector located at the through hole. The mounting groove has a transmission line connector fixing mechanism for fixing the transmission line connector. The transmission line connector fixing mechanism includes two opposing arc-shaped cards. The side wall of the arc-shaped cards has a spring mounting post. The spring mounting post has a third spring for abutting the two arc-shaped cards together to fix the transmission line connector. The spring mounting post also has a second strip plate. The upper end face of the second strip plate has a second protrusion. The guide plate has a second arc-shaped block for pushing the second protrusion when rotating the arc-shaped plate to make the two arc-shaped cards move away from each other. The direction of rotation required for the arc-shaped plate when the first limiting post is disengaged from the upper or lower blind hole is opposite to the direction of rotation required for the arc-shaped plate when the two arc-shaped cards move away from each other.

[0021] The outer wall of the outer casing is provided with a mounting rod, and a connecting seat is connected to the mounting rod. The connecting seat is provided with a connecting seat through hole.

[0022] The inner wall of the outer shell is provided with a strip groove along its height direction, and the side wall of the connecting plate is provided with a strip protrusion that fits with the strip groove.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Solve the problems of water leakage and inconvenient disassembly while ensuring integration and small size:

[0025] By incorporating independent cable placement and mounting cavities within the outer casing, dust and rainwater from the external environment are prevented from entering the mounting cavities when the protective cover is damaged, thus significantly improving the operational stability of this novel omnidirectional UHF partial discharge sensor. Furthermore, the connection mechanism and mounting bracket fixing mechanism allow for convenient disassembly of the protective cover and mounting bracket, facilitating maintenance of the device.

[0026] Through the design of the mounting plate, mounting sleeve, and connecting rod, the mounting sleeve simultaneously serves as a medium for the two rotating structures, improving integration. One end of the second spring is supported on the inner wall of the bottom surface of the mounting sleeve, and the other end is supported on the upper end of the connecting rod to drive the connecting rod to move axially to the lower partition side to insert the locking block into the slot of the fixed seat. During the rotation of the connecting rod around the axis, the mounting bracket is driven to rotate through the combination of the locking block and the slot of the fixed seat, thereby improving the ease of disassembly.

[0027] 2. The specially designed mounting bracket fixing mechanism has significant advantages in terms of maintenance convenience, operational stability, and structural adaptability, and can meet the diverse needs of the new omnidirectional ultra-high frequency partial discharge sensor in practical applications:

[0028] Facilitates maintenance of electrical components: When maintenance is required on electrical components such as the preamplifier and filter located at the lower partition, rotating the mounting plate causes the arc-shaped plate and guide plate to rotate. The first arc-shaped block presses against the first protrusion, pulling the end of the first limiting post out of the upper blind hole. This loosens the mounting plate and pulls the mounting bracket downwards. When the first limiting post moves to the lower blind hole, it is re-secured by the action of the first spring. This allows the mounting bracket to slide out of the housing, making it convenient for staff to maintain the electrical components on the mounting bracket. Compared to traditional, complex fixing methods, this operation is much more convenient.

[0029] To improve operational stability, the inner wall of the housing is equipped with a strip-shaped groove, and the side wall of the connecting plate is equipped with a strip-shaped protrusion that fits with the groove. This prevents the mounting bracket from rotating when moving along the height direction within the housing, ensuring that the first limiting post can move stably to the lower blind hole. This structure effectively improves the stability of the new omnidirectional ultra-high frequency partial discharge sensor during use, preventing the normal operation of the device from being affected by the shaking or displacement of the mounting bracket.

[0030] Adaptation to the overall structure: This fixing mechanism fits closely with other structures in the device. For example, the mounting groove is located on the upper surface of the upper partition and is interconnected with the upper partition, mounting cavity, and other structures. The transmission line connector fixing mechanism is also located in the mounting groove. Rotating the arc-shaped plate not only controls the fixing state of the mounting bracket but also operates the transmission line connector fixing mechanism, making the overall structural layout of the device more reasonable, with each component working together to enhance the overall performance of the device.

[0031] 3. The layout of the designed card block and fixing seat allows the cross section of the card block to pass smoothly through the cross section of the fixing seat, thereby improving the convenience of disassembly and assembly.

[0032] 4. The design of the aforementioned transmission line connector fixing mechanism plays a positive role in transmission line fixing, device maintenance, and component coordination, ensuring stable operation and convenient maintenance of the device.

[0033] Securely fix the transmission line connector: Two opposing arc-shaped clips and a third spring can tightly secure the transmission line connector to the through hole in the upper partition. This fixing method confines the transmission line within the cable placement cavity, preventing excess transmission line from entering the cavity and contacting internal electrical components when the mounting bracket is pulled. This effectively prevents circuit faults caused by transmission line shaking or displacement, and improves the stability of the new omnidirectional ultra-high frequency partial discharge sensor during use.

[0034] Convenient mounting bracket maintenance: When disassembling the mounting bracket, rotating the connecting rod causes the guide plate to rotate. The second arc-shaped block on the guide plate pushes the second protrusion, causing the two arc-shaped clips to move away from each other, thereby loosening the transmission line connector. At this point, the mounting bracket can be completely pulled out of the housing, facilitating maintenance of electrical components such as the preamplifier and filter on the mounting bracket, simplifying the maintenance process and improving maintenance efficiency.

[0035] Optimizing the overall structural linkage: The transmission line connector fixing mechanism and the mounting bracket fixing mechanism are linked through the rotation of the arc-shaped plate. When the first limit post disengages from the blind hole and the arc-shaped card releases the transmission line connector, the arc-shaped plate needs to rotate in the opposite direction. This ingenious design allows all components to work together during operation. When disassembling and maintaining the mounting bracket, the transmission line connector can be released simultaneously, reducing operation steps and enhancing the rationality and functionality of the overall structure of the device. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the omnidirectional ultra-high frequency partial discharge sensing device in Example 1.

[0037] Figure 2 for Figure 1 Cross-sectional view of an omnidirectional ultra-high frequency partial discharge sensor.

[0038] Figure 3 for Figure 2 Enlarged view of section A.

[0039] Figure 4 for Figure 1 Exploded view of the structure of a novel omnidirectional ultra-high frequency partial discharge sensor.

[0040] Figure 5 for Figure 4 Enlarged view of section A.

[0041] Figure 6 for Figure 2 A half-sectional view of the sleeve being installed.

[0042] Figure 7 for Figure 2 A schematic diagram of the connecting rod in the diagram.

[0043] Figure 8 for Figure 1 Cross-sectional view of an omnidirectional ultra-high frequency partial discharge sensor. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "proximal," "distal," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities in the International System of Units (SI), or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0047] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0049] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features described herein can be combined with each other.

[0050] An omnidirectional ultra-high frequency partial discharge sensing device, such as Figure 1 and Figure 2 As shown, it includes:

[0051] The outer shell 110 has a downward-facing cavity 210 formed within it.

[0052] The mounting bracket 220, slidably disposed within the outer casing 110, includes a mounting plate 2130, an upper partition 221, a lower partition 222, and a sealing plate 2120 arranged in parallel, and a connecting plate 223 disposed directly on and connecting the upper partition 221 and the lower partition 222. A mounting cavity 220 is formed between the upper partition 221, the lower partition 222, and the connecting plate 223. The sealing plate 2120 is disposed above and connected to the upper partition 221. The mounting plate 2130 is located between the upper partition 221 and the lower partition 222 and passes through the upper partition 2130. The connecting component of 21 is connected to the sealing plate 2120. The lower partition 222 is provided with a mounting sleeve 2150 extending into the mounting cavity 250. The end of the mounting sleeve 2150 is connected to the mounting plate 2130, and the side of the inner wall of the end is provided with multiple fixing seats 610. The fixing seat 610 is provided with a fixing seat slot 620 facing the upper partition 221. The slot is only open on one side facing the upper partition 221. A cable placement cavity 240 is formed between the sealing plate 2120 and the outer shell 110. Electrical components, including the preamplifier 260 and the filter 270, are arranged in the mounting cavity 250.

[0053] The protective cover 130 includes a cover body and a connecting rod 2160 disposed on the cover body. The lower end of the connecting rod 2160 is connected to the cover body, and the upper end is provided with the same number of connecting blocks 710 as the fixed seat 610. The connecting blocks 710 extend outward along the radial direction of the connecting rod 2160, and a locking block 720 that cooperates with the fixed seat slot 620 is provided on the side facing the lower partition 222. A second spring 630 is also provided on the inner side of the end of the mounting sleeve 2150. One end of the second spring 630 is supported on the inner wall of the bottom surface of the end of the mounting sleeve 2150, and the other end is supported to the upper end of the connecting rod 2160 to drive the connecting rod 2160 to move axially to the side of the lower partition 222 to insert the locking block 720 into the fixed seat slot 620. During the rotation of the connecting rod 2160 around the axis, the mounting bracket 220 is driven to rotate through the engagement of the locking block 720 and the fixed seat slot 620.

[0054] This design solves the problems of water leakage and inconvenient disassembly while ensuring integration and small size:

[0055] By incorporating independent cable placement and mounting cavities within the outer casing, dust and rainwater from the external environment are prevented from entering the mounting cavities when the protective cover is damaged, thus significantly improving the operational stability of this novel omnidirectional UHF partial discharge sensor. Furthermore, the connection mechanism and mounting bracket fixing mechanism allow for convenient disassembly of the protective cover and mounting bracket, facilitating maintenance of the device.

[0056] Through the design of the mounting plate, mounting sleeve 2150, and connecting rod 2160, the mounting sleeve 2150 simultaneously serves as a medium for the two rotating structures, improving integration. One end of the second spring 630 is supported on the inner wall of the bottom surface of the mounting sleeve 2150, and the other end is supported on the upper end of the connecting rod 2160 to drive the connecting rod 2160 to move axially to the side of the lower partition 222 to insert the locking block 720 into the fixed seat slot 620. During the rotation of the connecting rod 2160 around the axis, the mounting bracket 220 is rotated through the combination of the locking block 720 and the fixed seat slot 620, thereby improving the ease of disassembly.

[0057] The mounting bracket 220 is fixed by a mounting bracket fixing mechanism provided on the outer casing 110, combined with Figure 4 As shown, the lower partition 222 has a feeder through hole 430 for the feeder cable to pass through, and the cable placement cavity 240 has a transmission line 120 that connects to the electrical components in the mounting cavity 250; the protective cover 130 also houses a high-frequency antenna 280. In use, the connection between the protective cover 130 and the mounting bracket 220 can be released by the cooperation of the connecting rod 2160 and the mounting sleeve 2150, thereby allowing maintenance of the high-frequency antenna 280 in the protective cover 130. The mounting bracket 220 can be slid out of the outer casing 110 by the mounting bracket fixing mechanism, thereby allowing maintenance of electrical components such as the preamplifier 260 and the filter 270 located at the mounting bracket 220.

[0058] In this embodiment, the omnidirectional ultra-high frequency partial discharge sensor divides the cavity 210 of the housing 110 into a cable placement cavity 240 and a mounting cavity 250 by setting a mounting bracket 220 in the housing 110. This prevents dust and rainwater from entering the mounting cavity 250 when the protective cover 130 is damaged, thus ensuring the stable operation of electrical components such as the preamplifier 260 and filter 270 in the mounting cavity 250. At the same time, the connection mechanism and the mounting bracket fixing mechanism make it relatively easy to disassemble the protective cover 130 and the mounting bracket 220, thereby facilitating the maintenance of electrical components such as the high frequency antenna 280, the preamplifier 260, and the filter 270.

[0059] Combination Figure 3-5As shown, the mounting bracket fixing mechanism includes at least two sets of upper blind holes 290 and lower blind holes 2100. These at least two sets of upper blind holes 290 and lower blind holes 2100 are located on the inner wall of the outer casing 110 and spaced apart along the height direction of the outer casing 110. An mounting groove 2110 is provided on the upper end face of the upper partition 221, and a sealing plate 2120 is provided at the mounting groove 2110. A mounting groove side through hole 310 is provided on the side wall of the mounting groove 2110, and a first limiting post 320 is slidably disposed in the mounting groove side through hole 310. A first spring 330 is provided in the mounting groove 2110 to push the first limiting post 320 into the upper blind hole 290 or lower blind hole 2100 to fix the mounting bracket 220. The first limiting post 320 is located away from... The upper blind hole 290 is provided with a first strip plate 340 at its end, and the upper end face of the first strip plate 340 is provided with a first protrusion 350; the bottom end face of the mounting groove 2110 is provided with an arc-shaped through hole 360, the mounting cavity 250 is provided with a mounting plate 2130, the mounting plate 2130 is provided with an arc-shaped piece 2140 that can rotate in the arc-shaped through hole 360, the end of the arc-shaped piece 2140 passes through the arc-shaped through hole 360 ​​and extends into the mounting groove 2110, the end of the arc-shaped piece 2140 that extends into the mounting groove 2110 is provided with a guide plate 370, the guide plate 370 is provided with a first arc-shaped block 380 for pushing the first protrusion 350 when rotating the arc-shaped piece 2140 so that the first limiting post 320 disengages from the upper blind hole 290 or the lower blind hole 2100.

[0060] When maintenance is required on electrical components such as the preamplifier 260 and filter 270 located at the lower partition 222, the mounting plate 2130 is rotated. The arc-shaped piece 2140 at the mounting plate 2130 drives the guide plate 370 to rotate together. The first arc-shaped block 380 presses the first protrusion 350 to move, thereby pulling the end of the first limiting post 320 out of the upper blind hole 290. Then, the mounting plate 2130 is loosened and the mounting bracket 220 is pulled down. When the first limiting post 320 moves to the lower blind hole 2100, the end of the first limiting post 320 abuts into the lower blind hole 2100 under the action of the first spring 330, thereby re-fixing the mounting bracket 220. Figure 8 As shown, in order to enable the end of the first limiting post 320 to move stably to the lower blind hole 2100, a strip groove 420 is provided on the inner wall of the outer shell 110 along its height direction, and a strip protrusion 820 with clearance fit to the strip groove 420 is provided on the side wall of the connecting plate 223; thereby, the mounting bracket 220 will not rotate when it moves along the height of the outer shell 110, thus improving the stability of the new omnidirectional ultra-high frequency partial discharge sensing device during use.

[0061] In addition, the bottom end of the mounting bracket 220 is provided with an annular groove 2190 that fits with the cover body with a gap. The lower end of the connecting rod 2160 passes through the cover body and is provided with an annular plate 2200 on the part located on the outside of the cover body. The annular plate 2200 is used to push the end of the cover body into the annular groove 2190 when the locking block 720 abuts against the fixing seat slot 620.

[0062] In particular, in this embodiment, the angle between any point on any card block 720 and any point on an adjacent card block 720 about the axis of the connecting rod 2160 is projected into the plane perpendicular to the axis of the connecting rod 2160 by a greater angle than the angle between any two points on any fixed base 610 about the axis of the connecting rod 2160 in any plane perpendicular to the axis of the connecting rod 2160.

[0063] The angle between any point on any fixed seat 610 and any point on an adjacent fixed seat 610 about the axis of the connecting rod 2160, projected onto any plane perpendicular to the axis of the connecting rod 2160, is greater than the angle between any two points on any locking block 720 about the axis of the connecting rod 2160, projected onto any plane perpendicular to the axis of the connecting rod 2160.

[0064] The layout of the card block 720 and the fixing seat 610 is designed to allow the cross section of the card block 720 to pass smoothly through the cross section of the fixing seat 610, thereby improving the ease of assembly and disassembly.

[0065] The end of the connecting rod 2160 extending out of the cover body is also provided with knurling 730, and the mounting sleeve 2150 is also provided with a spring baffle. The spring baffle is connected to the second spring 630 and slides along the axial direction of the mounting sleeve 2150.

[0066] When the protective cover 130 needs to be disassembled, push the connecting rod 2160 upwards. After the locking block 720 disengages from the fixing seat slot 620, rotate the connecting rod 2160, thereby causing the connecting block 710 to rotate to the gap between adjacent fixing seats 610. In this embodiment, to facilitate the rotation of the connecting rod 2160, a knurled pattern 730 is provided at the end of the connecting rod 2160 extending out of the protective cover 130. Subsequently, the fixing seat 610 is ejected from the fixing seat 610 under the elastic force of the second spring 630. At this time, the connecting rod 2160 and the protective cover 130 can be removed from the mounting bracket 220. When the protective cover 130 needs to be installed on the mounting bracket 220, push the connecting rod 2160 into the mounting sleeve 2150, and then rotate the rod 2160 so that the connecting block 710 can pass through the gap between adjacent fixing seats 610. Then continue to rotate the connecting rod 2160 until the locking block 720 abuts into the fixing seat slot 620 to complete the installation of the protective cover 130.

[0067] In this embodiment, the method used to install and remove the protective cover 130 is faster and simpler than the bolt fixing method. After the protective cover 130 is installed on the mounting bracket, the connecting rod 2160 can be directly rotated. The engagement between the locking block 720 and the fixing seat slot 620 drives the mounting sleeve 2150, mounting plate 2130, and guide plate 370 to rotate. This allows the connecting mechanism to not only install and remove the protective cover 130 but also rotate the mounting plate 2130, thus facilitating the driving of the mounting plate 2130.

[0068] In this embodiment, the upper partition 221 is provided with an upper partition through hole 2170 that penetrates the sealing plate 2120 and the mounting groove 2110. The transmission line 120 is provided with a transmission line connector 2180 located at the upper partition through hole 2170. In this embodiment, the transmission line connector 2180 is a BNC connector. The mounting groove 2110 is provided with a transmission line connector fixing mechanism for fixing the transmission line connector 2180. The transmission line connector fixing mechanism includes two opposing arc-shaped cards 390. The side wall of the arc-shaped card 390 is provided with a spring mounting post 3100. The spring mounting post 3100 is provided with a mechanism for holding the two arc-shaped cards together. The third spring 3110, which is abutted together to fix the transmission line connector 2180, is provided at the spring mounting post 3100. The second strip plate 3120 is provided at the upper end surface of the second strip plate 3120. The guide plate 370 is provided with a second arc block 3140 for pushing the second protrusion 3130 to make the two arc cards 390 move away from each other when the arc plate 2140 is rotated. The direction of rotation required for the arc plate 2140 when the first limiting post 320 is disengaged from the upper blind hole 290 or the lower blind hole 2100 is opposite to the direction of rotation required for the arc plate 2140 when the two arc cards 390 move away from each other.

[0069] In this embodiment, the transmission line connector 2180 can be fixed to the upper partition through hole 2170 by the transmission line connector fixing mechanism, which can confine the transmission line 120 in the cable placement cavity 240. This prevents excess transmission line 120 from entering the mounting cavity 250 and contacting electrical components such as the preamplifier 260 and filter 270 in the mounting cavity 250 when the mounting bracket 220 is pulled, thereby further improving the stability of the new omnidirectional ultra-high frequency partial discharge sensing device during use. At the same time, when disassembling the mounting bracket 220, the guide plate 370 can be rotated by rotating the connecting rod 2160, thereby causing the second arc-shaped block 3140 to push the second protrusion 3130 to make the two arc-shaped cards 390 move away from each other. At this time, the mounting bracket 220 can be completely pulled out from the outer shell 110, which further facilitates the maintenance of electrical components such as the preamplifier 260 and filter 270.

[0070] Combination Figure 8 As shown, an installation rod 810 is provided on the outer side wall of the outer casing 110, and a connecting seat 140 is connected to the installation rod 810. The connecting seat 140 is provided with a connecting seat through hole 141.

[0071] In this embodiment, the connection seat 140 and the connection seat through hole 141 allow installers to install the connection seat 140 at the installation position using bolts or other tools that pass through the connection seat through hole 141, thus facilitating the installation of this novel omnidirectional ultra-high frequency partial discharge sensing device.

Claims

1. An omni-directional ultra-high frequency partial discharge sensing device, characterized in that, The utility model relates to a kind of electronic device, including: Outer shell (110), the cavity (210) of opening downward is formed in the outer shell; Mounting bracket (220), slidingly disposed in outer shell (110), including upper partition (221) and lower partition (222), and connecting plate (223) is disposed between upper partition (221) and lower partition (222) and connects upper partition (221) and lower partition (222), upper partition (221) and lower partition (222) divide cavity into cable placement cavity (240) and installation cavity (250), cable placement cavity (240) is equipped with transmission line being connected with installation cavity (250) by electrical element;The bottom end surface of lower partition is covered with protective cover (130), and protective cover (130) and mounting bracket (220) are integrally arranged; The mounting bracket (220) further includes mounting plate (2130) and sealing plate (2120), the upper partition (221), lower partition (222) and sealing plate (2120) are arranged in parallel, the installation cavity (250) is formed between the upper partition (221), lower partition (222) and connecting plate (223), the sealing plate (2120) is arranged above upper partition (221) and is connected with upper partition (221), the mounting plate (2130) is between upper partition (221) and lower partition (222), and is connected with sealing plate (2120) by connecting component passing through upper partition (221), the lower partition (222) is equipped with mounting sleeve (2150) extending to installation cavity (250), the end of mounting sleeve (2150) is connected mounting plate (2130), and the side of inner wall of end is equipped with multiple fixed seats (610), the fixed seat (610) is equipped with fixed seat clamping groove (620) being arranged towards upper partition (221) direction, the clamping groove only opens towards the side of upper partition (221), the sealing plate (2120) and outer shell (110) form cable placement cavity (240), electrical element, including preamplifier (260) and filter (270), is arranged in installation cavity (250); The protective cover (130) comprises a cover main body and a connecting rod (2160) arranged on the cover main body, the lower end of the connecting rod (2160) is connected with the cover main body, the upper end of the connecting rod (2160) is provided with the same number of connecting blocks (710) as the fixing seats (610), the connecting blocks (710) extend outward along the radial direction of the connecting rod (2160), and the side of the connecting blocks (710) facing the lower partition plate (222) is provided with clamping blocks (720) matched with the fixing seat clamping grooves (620), the inner side of the end of the mounting sleeve (2150) is further provided with a second spring (630), one end of the second spring (630) is supported on the inner wall of the bottom surface of the end of the mounting sleeve (2150), and the other end of the second spring (630) is supported on the upper end of the connecting rod (2160) to drive the connecting rod (2160) to move along the axial direction to the side of the lower partition plate (222) and insert the clamping blocks (720) into the fixing seat clamping grooves (620), and the connecting rod (2160) is rotated around the axis, and the connecting rod (2160) drives the mounting bracket (220) to rotate through the combination of the clamping blocks (720) and the fixing seat clamping grooves (620).

2. The omni-directional UHF partial discharge sensing device according to claim 1, characterized in that, The mounting bracket (220) is fixed by a mounting bracket fixing mechanism arranged on the outer shell (110), the mounting bracket fixing mechanism comprises at least two groups of upper blind holes (290) and lower blind holes (2100), the at least two groups of upper blind holes (290) and lower blind holes (2100) are arranged on the inner wall of the outer shell (110) and are arranged at intervals along the height direction of the outer shell (110); the upper end surface of the upper partition plate (221) is provided with a mounting groove (2110), the mounting groove (2110) is provided with a sealing plate (2120); the side wall of the mounting groove (2110) is provided with a mounting groove side through hole (310), a first limiting column (320) is slidably arranged in the mounting groove side through hole (310), and a first spring (330) for pushing the first limiting column (320) to slide into the upper blind hole (290) or the lower blind hole (2100) to fix the mounting bracket (220) is arranged in the mounting groove (2110); the end of the first limiting column (320) away from the upper blind hole (290) is provided with a first strip-shaped plate (340), and the upper end surface of the first strip-shaped plate (340) is provided with a first protruding block (350); the bottom end surface of the mounting groove (2110) is provided with an arc-shaped through hole (360), a mounting plate (2130) is arranged in the mounting cavity (250), the mounting plate (2130) is provided with an arc-shaped piece (2140) capable of rotating in the arc-shaped through hole (360), the end of the arc-shaped piece (2140) extends into the mounting groove (2110) through the arc-shaped through hole (360), the end of the arc-shaped piece (2140) extending into the mounting groove (2110) is provided with a guide plate (370), and the guide plate (370) is provided with a first arc-shaped block (380) for pushing the first protruding block (350) when the arc-shaped piece (2140) is rotated to make the first limiting column (320) separate from the upper blind hole (290) or the lower blind hole (2100).

3. The omni-directional UHF partial discharge sensor device according to claim 2, characterized in that The bottom end of the mounting bracket (220) is provided with an annular groove (2190) matched with the gap of the cover body, the lower end of the connecting rod (2160) is arranged through the cover body, and the part outside the cover body is provided with an annular plate (2200), which is used for abutting the end of the cover body into the annular groove (2190) when the clamping block (720) is inserted into the fixed seat clamping groove (620).

4. The omnidirectional UHF partial discharge sensing device according to claim 3, characterized in that: The angle between any point on any clamping block (720) and any point on an adjacent clamping block (720) about the axis of the connecting rod (2160) is greater than the angle between any two points on any fixed seat (610) about the axis of the connecting rod (2160) in the projection angle in any plane perpendicular to the axis of the connecting rod (2160). The angle between any point on any clamping block (720) and any point on an adjacent clamping block (720) about the axis of the connecting rod (2160) is greater than the angle between any two points on any fixed seat (610) about the axis of the connecting rod (2160) in the projection angle in any plane perpendicular to the axis of the connecting rod (2160).

5. The omni-directional UHF partial discharge sensor device according to claim 3, characterized in that The end of the connecting rod (2160) extending out of the cover body is further provided with a knurled pattern (730).

6. The omni-directional UHF partial discharge sensor device according to claim 3, characterized in that The mounting sleeve (2150) is further provided with a spring baffle connected to the second spring (630) and sliding along the axis direction of the mounting sleeve (2150).

7. The omni-directional UHF partial discharge sensor device according to claim 3, characterized in that The upper partition plate (221) is provided with an upper partition plate through hole (2170) penetrating through the sealing plate (2120) and the mounting groove (2110), the transmission line (120) is provided with a transmission line connector (2180) located at the upper partition plate through hole (2170), the mounting groove (2110) is provided with a transmission line connector fixing mechanism for fixing the transmission line connector (2180), the transmission line connector fixing mechanism comprises two oppositely arranged arc-shaped clamps (390), the sidewall of the arc-shaped clamp (390) is provided with a spring mounting column (3100), the spring mounting column (3100) is provided with a third spring (3110) for abutting the two arc-shaped clamps (390) together to fix the transmission line connector (2180), the spring mounting column (3100) is further provided with a second strip-shaped plate (3120), the upper end surface of the second strip-shaped plate (3120) is provided with a second protrusion (3130), the guide plate (370) is provided with a second arc-shaped block (3140) for pushing the second protrusion (3130) to move the two arc-shaped clamps (390) away from each other when the arc-shaped piece (2140) is rotated, and the required rotation direction of the arc-shaped piece (2140) when the first limiting column (320) is separated from the upper blind hole (290) or the lower blind hole (2100) is opposite to the required rotation direction of the arc-shaped piece (2140) when the two arc-shaped clamps (390) are moved away from each other.

8. The omni-directional UHF partial discharge sensor device of claim 1, wherein, An installation rod (810) is arranged at the outer side wall of the outer shell (110), and a connecting seat (140) is connected to the installation rod (810), and a connecting seat through hole (141) is arranged at the connecting seat (140).

9. The omni-directional UHF partial discharge sensor device according to claim 1, characterized in that A strip-shaped groove (420) is arranged at the inner wall of the outer shell (110) along the height direction, and a strip-shaped protrusion (820) is arranged at the side wall of the connecting plate (223) and is in gap cooperation with the strip-shaped groove (420).

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