Omnidirectional ultrahigh frequency partial discharge sensing device

Abstract

The invention relates to the field of transformer substation monitoring equipment, in particular to a novel omnidirectional ultrahigh frequency partial discharge sensing device which comprises an outer shell, a cavity with a downward opening is formed in the outer shell, and an installation support is arranged in the outer shell in a sliding mode. The installation support comprises an upper partition plate and a lower partition plate which are provided with connecting plates used for connecting the upper partition plate and the lower partition plate. The upper partition plate and the lower partition plate divide the cavity into a cable placement cavity and a mounting cavity, and a transmission line connected with an electric appliance element in the mounting cavity is arranged in the cable placement cavity; the bottom end face of the lower partition plate is covered with a protective cover, and a connecting mechanism used for connecting the protective cover and the mounting support is further arranged on the mounting support. According to the novel omnidirectional ultrahigh-frequency partial discharge sensing device, the independent cable placement cavity and the installation cavity are arranged in the outer shell, so that dust, rainwater and the like in the external environment cannot enter the installation cavity when the protection cover is damaged, and the operation stability of the novel omnidirectional ultrahigh-frequency partial discharge sensing device is better improved.

Description

Technical Field

[0001] The invention relates to the field of transformer substation monitoring equipment, and in particular to an omnidirectional ultra-high frequency partial discharge sensor device. Background Art

[0002] The omnidirectional ultra-high frequency partial discharge sensor, referred to as UHF sensor, is a kind of power equipment monitoring equipment, which is mainly used to detect and analyze the partial discharge phenomenon in power equipment. It can capture and analyze the ultra-high frequency electromagnetic wave signal generated by the partial discharge inside the power equipment, so as to realize the monitoring of the power equipment status and fault diagnosis.

[0003] The current omnidirectional UHF partial discharge sensor usually includes a broadband high-frequency antenna, a preamplifier, a filter and a transmission line. The broadband high-frequency antenna is used to receive the UHF electromagnetic wave signal generated by the partial discharge inside the power equipment. The antenna is usually designed to be omnidirectional and can cover a large monitoring range to ensure that signals from different directions can be effectively received.

[0004] The preamplifier is used to initially amplify the received signal to improve the signal-to-noise ratio. The filter can select different frequency bands for filtering as needed to ensure that only useful partial discharge signals are retained. The transmission line is used to transmit the processed signal to the monitoring host or data analysis system.

[0005] At present, when installing an omnidirectional ultra-high frequency partial discharge sensor, a broadband high-frequency antenna, a preamplifier, a filter and a transmission line are usually installed in an outer shell, and a protective cover is installed under the outer shell to achieve the installation of the broadband high-frequency antenna, preamplifier, filter and transmission line. Although the above method can achieve the installation of the omnidirectional ultra-high frequency partial discharge sensor, in actual use, since the omnidirectional ultra-high frequency partial discharge sensor requires regular maintenance, and the outer shell and the protective cover are usually connected by bolts, the bolts need to be loosened during maintenance, which is very inconvenient; and the broadband high-frequency antenna, preamplifier, filter and transmission line are all installed in the outer shell. When the protective cover is damaged, external dust and rain water are easy to enter the outer shell, causing malfunctions of the broadband high-frequency antenna, preamplifier and filter.

[0006] Some existing technologies attempt to solve the above problems, but such improved solutions have problems of complex structure and volume. Summary of the invention

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

[0008] The purpose of the present invention can be achieved by the following technical solutions:

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

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

[0011] The mounting bracket is slidably arranged in the outer shell, and includes an upper partition and a lower partition, and a connecting plate arranged on the upper partition and the lower partition to directly press and connect the upper partition and the lower partition. The upper partition and the lower partition divide the cavity into a cable placement cavity and an installation cavity. The cable placement cavity is provided with a transmission line connected to the installation cavity by electrical components; the bottom end surface of the lower partition is covered with a protective cover, and the protective cover and the mounting bracket are integrated.

[0012] The mounting bracket also includes a mounting plate and a sealing plate, the upper partition, the lower partition and the sealing plate are arranged in parallel, a mounting cavity is formed between the upper partition, the lower partition and the connecting plate, the sealing plate is arranged 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, a mounting sleeve extending toward the mounting cavity is provided on the lower partition, the end of the mounting sleeve is connected to the mounting plate, and a plurality of fixing seats are provided on the side of the inner wall of the end, the fixing seat is provided with a fixing seat slot arranged toward the upper partition, the slot is only open toward one side of the upper partition, a cable placement cavity is formed between the sealing plate and the outer shell, and electrical components including a preamplifier and a filter are arranged in the mounting cavity;

[0013] The protective cover comprises a cover body and a connecting rod arranged 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 with the same number as the fixing seat, the connecting blocks extend radially outward along the connecting rod, and a block matching with the fixing seat slot is provided on the side facing the lower partition, and 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 block into the fixing seat slot, and the mounting bracket is driven to rotate through the combination of the block and the fixing seat slot during the rotation of the connecting rod around the axis.

[0014] The mounting bracket is fixed by a mounting bracket fixing mechanism provided on the outer shell, and the mounting bracket fixing mechanism includes at least two groups of upper blind holes and lower blind holes, and the at least two groups of upper blind holes and lower blind holes are provided on the inner wall of the outer shell and are spaced apart along the height direction of the outer shell; a mounting groove is provided on the upper end surface of the upper partition, and a sealing plate is provided at the mounting groove; a mounting groove side through hole is provided on the side wall of the mounting groove, and a first limiting column is slidably provided in the mounting groove side through hole, and a first limiting column is provided in the mounting groove to push the first limiting column to slide into the upper blind hole or the lower blind hole to adjust the mounting A first spring is provided for fixing the bracket; a first strip plate is provided at the end of the first limiting column away from the upper blind hole, and a first protrusion is provided on the upper end surface of the first strip plate; an arc-shaped through hole is provided on the bottom end surface of the mounting groove, a mounting plate is provided in the mounting cavity, an arc-shaped piece that can rotate in the arc-shaped through hole is provided on the mounting plate, the end of the arc-shaped piece passes through the arc-shaped through hole and extends into the mounting groove, a guide plate is provided at the end of the arc-shaped piece extending into the mounting groove, and a first arc-shaped block is provided on the guide plate for pushing the first protrusion when rotating the arc-shaped piece to make the first limiting column disengage 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 matches the clearance of the cover body. The lower end of the connecting rod is arranged through the cover body, and an annular plate is provided 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 block is pressed into the fixing seat slot.

[0016] The projection angle of the angle between any point on any clamping block and any point on the adjacent clamping block with respect to the axis of the connecting rod in any plane perpendicular to the axis of the connecting rod is greater than the projection angle of the angle between any two points on any fixed seat with respect to the axis of the connecting rod in any plane perpendicular to the axis of the connecting rod;

[0017] The projection angle of the angle between any point on any fixed seat and any point on the adjacent fixed seat with respect to the axis of the connecting rod in any plane perpendicular to the axis of the connecting rod is greater than the projection angle of the angle between any two points on any clamping block with respect to the axis of the connecting rod in 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 a knurling pattern.

[0019] A spring baffle is also provided in the installation sleeve, and the spring baffle is connected to the second spring and slides along the axial direction of the installation sleeve.

[0020] The upper partition is provided with an upper partition through hole that penetrates the sealing plate and the mounting groove, the transmission line is provided with a transmission line connector located at the upper partition through hole, the mounting groove is provided with a transmission line connector fixing mechanism for fixing the transmission line connector, the transmission line connector fixing mechanism includes two arc-shaped cards arranged opposite to each other, a spring mounting column is provided at the side wall of the arc-shaped card, a third spring is provided at the spring mounting column for pressing the two arc-shaped cards together to fix the transmission line connector, a second strip plate is also provided at the spring mounting column, a second protrusion is provided on the upper end surface of the second strip plate, and a second arc block is provided at the guide plate for pushing the second protrusion when rotating the arc-shaped piece to make the two arc-shaped cards move away from each other; when the first limiting column is disengaged from the upper blind hole or the lower blind hole, the required rotation direction of the arc-shaped piece is opposite to the required rotation direction of the arc-shaped piece when the two arc-shaped cards move away from each other.

[0021] A mounting rod is provided at the outer side wall of the outer shell, a connecting seat is connected at the mounting rod, and a connecting seat through hole is provided at the connecting seat.

[0022] The inner wall of the outer shell is provided with a strip groove arranged along the height direction thereof, and the side wall of the connecting plate is provided with a strip convex block which is gap-matched 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 arranging an independent cable placement cavity and an installation cavity in the outer shell, when the protective cover is damaged, dust and rain in the external environment will not enter the installation cavity, thereby better improving the operation stability of the novel omnidirectional ultra-high frequency partial discharge sensor device; at the same time, through the arrangement of the connecting mechanism and the mounting bracket fixing mechanism, the protective cover and the mounting bracket can be disassembled more conveniently, thereby facilitating the maintenance of the novel omnidirectional ultra-high frequency partial discharge sensor device.

[0026] Through the design of the mounting plate, mounting sleeve and connecting rod, the mounting sleeve serves as the medium of the upper and lower rotating structures at the same time, thereby improving the integration. 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 block into the fixing seat slot. During the rotation of the connecting rod around the axis, the mounting bracket is driven to rotate through the combination of the block and the fixing seat slot, thereby improving the convenience of disassembly.

[0027] 2. The specially designed mounting bracket fixing mechanism has significant advantages in terms of maintenance convenience, operation stability and structural adaptability, and can meet the various needs of the new omnidirectional UHF partial discharge sensor device in practical applications:

[0028] Convenient maintenance of electrical components: When it is necessary to maintain the preamplifier and filter and other electrical components at the lower partition, by rotating the mounting plate, the arc-shaped sheet and the guide plate are driven to rotate, and the first arc-shaped block squeezes the first protrusion, the end of the first limit column can be pulled out of the upper blind hole, the mounting plate is loosened and the mounting bracket is pulled down, and when the first limit column moves to the lower blind hole, it is pressed into the lower blind hole under the action of the first spring to be fixed again. This allows the mounting bracket to slide out of the outer shell, making it convenient for the staff to maintain the electrical components on the mounting bracket, and the operation is more convenient compared to the traditional complex fixing method.

[0029] Improved operational stability: The inner wall of the outer shell is provided with a strip groove, and the side wall of the connecting plate is provided with a strip protrusion that matches the gap of the strip groove, so that the mounting bracket will not rotate when it moves in the height direction in the outer shell, ensuring that the first limit column can stably move to the lower blind hole. This structure effectively improves the stability of the new omnidirectional UHF partial discharge sensor device during use, and avoids the normal operation of the device being affected by the shaking or displacement of the mounting bracket.

[0030] Adapt to the overall structure: The fixing mechanism is closely matched with other structures of the device. For example, the installation groove is set on the upper end surface of the upper partition, which is interrelated with the upper partition, the installation cavity and other structures. The transmission line connector fixing mechanism is also set in the installation groove. When the arc-shaped piece is rotated, it can not only control the fixing state of the mounting bracket, but also operate the transmission line connector fixing mechanism, making the structural layout of the entire device more reasonable, and the various components work together to enhance the overall performance of the device.

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

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

[0033] Firmly fix the transmission line connector: The transmission line connector can be tightly fixed to the through hole of the upper partition through two relatively arranged arc-shaped cards and a third spring. This fixing method can limit the transmission line in the cable placement cavity, and prevent the excess transmission line from entering the installation cavity and contacting the internal electrical components when the installation bracket is pulled, thereby effectively preventing circuit failures caused by shaking or displacement of the transmission line, and improving the stability of the new omnidirectional UHF partial discharge sensor device during use.

[0034] Convenient maintenance of the mounting bracket: When disassembling the mounting bracket, rotating the connecting rod can drive the guide plate to rotate, and the second arc block on the guide plate pushes the second convex block to move the two arc cards away from each other, thereby loosening the transmission line connector. At this time, the mounting bracket can be completely pulled out of the outer shell, which is convenient for maintenance of electrical components such as the preamplifier and filter on the mounting bracket, simplifying the maintenance process and improving maintenance efficiency.

[0035] Optimize the linkage of the overall structure: The transmission line connector fixing mechanism and the mounting bracket fixing mechanism are linked through the rotation of the arc piece. When the first limit column is separated from the blind hole and the arc card to release the transmission line connector, the arc piece needs to rotate in the opposite direction. This ingenious design allows the various components of the device to work together during operation. When disassembling and maintaining the mounting bracket, the transmission line connector can be released at the same time, reducing the operating steps and enhancing the rationality and functionality of the overall structure of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0037] Figure 2 for Figure 1 Cross-sectional view of a medium omnidirectional UHF partial discharge sensor device.

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

[0039] Figure 4 for Figure 1 Structural explosion diagram of the new omnidirectional UHF partial discharge sensor device.

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

[0041] Figure 6 for Figure 2 Half-section view of the installation sleeve.

[0042] Figure 7 for Figure 2 Schematic diagram of the connecting rod structure.

[0043] Figure 8 for Figure 1 Cross-sectional view of a medium omnidirectional UHF partial discharge sensor device. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "proximal", "distal", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the base units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0047] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

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

[0051] An outer shell 110, wherein a cavity 210 with an opening downward is formed in the outer shell;

[0052] The mounting bracket 220 is slidably disposed in the outer shell 110, and 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 arranged on the upper partition 221 and the lower partition 222 to directly press and connect the upper partition 221 and the lower partition 222, and a mounting cavity 250 is formed between the upper partition 221, the lower partition 222 and the connecting plate 223, and the sealing plate 2120 is arranged above the upper partition 221 and connected to the upper partition 221, and the mounting plate 2130 is located between the upper partition 221 and the lower partition 222, and passes through the upper partition 2 The connecting part of the lower partition 21 is connected to the sealing plate 2120, and the lower partition 222 is provided with a mounting sleeve 2150 extending toward the mounting cavity 250. The end of the mounting sleeve 2150 is connected to the mounting plate 2130, and a plurality of fixing seats 610 are provided on the side of the inner wall of the end. The fixing seat 610 is provided with a fixing seat card slot 620 arranged toward the upper partition 221, and the card slot is only open toward one side of the upper partition 221. A cable placement cavity 240 is formed between the sealing plate 2120 and the outer shell 110, and electrical components including a preamplifier 260 and a filter 270 are arranged in the mounting cavity 250;

[0053] The protective cover 130 includes a cover body and a connecting rod 2160 arranged 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 connecting blocks 710 with the same number as the fixing seat 610. The connecting blocks 710 extend outward along the radial direction of the connecting rod 2160, and a block 720 that cooperates with the fixing 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 block 720 into the fixing seat slot 620. During the rotation of the connecting rod 2160 around the axis, the mounting bracket 220 is driven to rotate through the combination of the block 720 and the fixing seat slot 620.

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

[0055] By arranging an independent cable placement cavity and an installation cavity in the outer shell, when the protective cover is damaged, dust and rain in the external environment will not enter the installation cavity, thereby better improving the operation stability of the novel omnidirectional ultra-high frequency partial discharge sensor device; at the same time, through the arrangement of the connecting mechanism and the mounting bracket fixing mechanism, the protective cover and the mounting bracket can be disassembled more conveniently, thereby facilitating the maintenance of the novel omnidirectional ultra-high frequency partial discharge sensor device.

[0056] Through the design of the mounting plate, mounting sleeve 2150 and connecting rod 2160, the mounting sleeve 2150 serves as a medium for the upper and lower rotating structures at the same time, thereby improving the integration. One end of the second spring 630 is supported on the inner wall of the bottom 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 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 combination of the block 720 and the fixed seat slot 620, thereby improving the convenience of disassembly.

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

[0058] The omnidirectional UHF partial discharge sensor device in this embodiment divides the cavity 210 in the outer shell 110 into a cable placement cavity 240 and an installation cavity 250 by arranging a mounting bracket 220 in the outer shell 110. When the protective cover 130 is damaged, dust and rain in the external environment will not enter the installation cavity 250, so that the electrical components such as the preamplifier 260 and the filter 270 in the installation cavity 250 can operate stably. At the same time, through the setting of the connecting mechanism and the mounting bracket fixing mechanism, the protective cover 130 and the mounting bracket 220 can be disassembled more conveniently, 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 groups of upper blind holes 290 and lower blind holes 2100, and 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 spaced apart along the height direction of the outer shell 110; a mounting groove 2110 is provided at the upper end surface 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 at the side wall of the mounting groove 2110, and a first limiting column 320 is slidably provided in the mounting groove side through hole 310, and a first spring 330 is provided in the mounting groove 2110 to push 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; the first limiting column 320 is away from A first strip plate 340 is provided at the end of the upper blind hole 290, and a first protrusion 350 is provided on the upper end surface of the first strip plate 340; an arc-shaped through hole 360 ​​is provided at the bottom end surface of the mounting groove 2110, and a mounting plate 2130 is provided in the mounting cavity 250. An arc-shaped piece 2140 capable of rotating in the arc-shaped through hole 360 ​​is provided at the mounting plate 2130, and the end of the arc-shaped piece 2140 passes through the arc-shaped through hole 360 ​​and extends into the mounting groove 2110. A guide plate 370 is provided at the end of the arc-shaped piece 2140 extending into the mounting groove 2110, and a first arc-shaped block 380 is provided at the guide plate 370 for pushing the first protrusion 350 when rotating the arc-shaped piece 2140 to disengage the first limiting column 320 from the upper blind hole 290 or the lower blind hole 2100.

[0060] When it is necessary to maintain the electrical components such as the preamplifier 260 and the filter 270 installed at the lower partition 222, the mounting plate 2130 is rotated, and the arc-shaped piece 2140 at the mounting plate 2130 drives the guide plate 370 to rotate together, and the first arc-shaped block 380 squeezes the first protrusion 350 to move, thereby pulling the end of the first limiting column 320 out of the upper blind hole 290, and then loosening the mounting plate 2130 and pulling the mounting bracket 220 downward. When the first limiting column 320 moves to the lower blind hole 2100, the end of the first limiting column 320 is pressed into the lower blind hole 2100 under the action of the first spring 330, thereby fixing the mounting bracket 220 again. Figure 8 As shown, in order to enable the end of the first limiting column 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 that is clearance-matched with 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 in the outer shell 110, thereby better improving the stability of the new omnidirectional UHF partial discharge sensor device when in use.

[0061] In addition, the bottom end of the mounting bracket 220 is provided with an annular groove 2190 that is gap-matched with the cover body, the lower end of the connecting rod 2160 is arranged through the cover body, and an annular plate 2200 is provided 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 block 720 is pressed into the fixing seat slot 620.

[0062] In particular, in this embodiment, the projection angle of the angle between any point on any block 720 and any point on the adjacent block 720 with respect to the axis of the connecting rod 2160 in any plane perpendicular to the axis of the connecting rod 2160 is greater than the projection angle of the angle between any two points on any fixing seat 610 with respect to the axis of the connecting rod 2160 in any plane perpendicular to the axis of the connecting rod 2160.

[0063] The projection angle of the angle between any point on any fixed seat 610 and any point on the adjacent fixed seat 610 with respect to the axis of the connecting rod 2160 in any plane perpendicular to the axis of the connecting rod 2160 is greater than the projection angle of the angle between any two points on any block 720 with respect to the axis of the connecting rod 2160 in any plane perpendicular to the axis of the connecting rod 2160.

[0064] By designing the layout of the clamping block 720 and the fixing seat 610 , it can be achieved that the cross section of the clamping block 720 can smoothly pass through the cross section of the fixing seat 610 , thereby improving the convenience of disassembly and assembly.

[0065] The end of the connecting rod 2160 extending out of the cover body is also provided with a knurling pattern 730 , and a spring baffle is also provided in the mounting sleeve 2150 . 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, the connecting rod 2160 is pushed upward, and the connecting rod 2160 is rotated after the block 720 is disengaged from the fixing seat slot 620, so that the connecting block 710 is rotated to the gap between adjacent fixing seats 610. In this embodiment, in order to facilitate the rotation of the connecting rod 2160, a knurling pattern 730 is provided at the end of the connecting rod 2160 extending from the protective cover 130. Then the fixing seat 610 is ejected from the fixing seat 610 under the elastic force of the second spring 630, and the connecting rod 2160 and the protective cover 130 can be removed from the mounting bracket 220 at this time; when the protective cover 130 needs to be installed on the mounting bracket 220, the connecting rod 2160 is pushed into the mounting sleeve 2150, and then the rod 2160 is rotated so that the connecting block 710 can pass through the gap between adjacent fixing seats 610, and then the connecting rod 216 is continuously rotated until the block 720 is pressed 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 can be faster and easier to install and remove the protective cover 130 than the bolt fixing method. At the same time, after the protective cover 130 is installed on the mounting bracket, the connecting rod 2160 can be directly rotated, and the mounting sleeve 2150, the mounting plate 2130 and the guide plate 370 can be driven to rotate through the cooperation between the clamping block 720 and the fixing seat clamping groove 620, so that the connecting mechanism can not only install and remove the protective cover 130, but also rotate the mounting plate 2130, so that the driving of the mounting plate 2130 can be realized more conveniently.

[0068] In this embodiment, the upper partition plate 221 is provided with an upper partition plate through hole 2170 that penetrates the sealing plate 2120 and the mounting groove 2110, and the transmission line 120 is provided with a transmission line connector 2180 located at the upper partition plate through hole 2170. The transmission line connector 2180 in this embodiment adopts a BNC connector, and 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 arc-shaped cards 390 arranged opposite to each other, and a spring mounting column 3100 is provided at the side wall of the arc-shaped card 390, and a spring mounting column 3100 is provided at the spring mounting column 3100 for fixing the two arc-shaped cards. A third spring 3110 390 is pressed against each other to fix the transmission line connector 2180, a second strip plate 3120 is also provided at the spring mounting column 3100, a second protrusion 3130 is provided on the upper end surface of the second strip plate 3120, and a second arc block 3140 is provided at the guide plate 370 for pushing the second protrusion 3130 when the arc piece 2140 is rotated to make the two arc cards 390 move away from each other; when the first limiting column 320 is disengaged from the upper blind hole 290 or the lower blind hole 2100, the required rotation direction of the arc piece 2140 is opposite to the required rotation direction of the arc piece 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 through the transmission line connector fixing mechanism, and the transmission line 120 can be limited in the cable placement cavity 240, thereby preventing the excess transmission line 120 from entering the installation cavity 250 and contacting the preamplifier 260 and filter 270 and other electrical components in the installation cavity 250 when the installation bracket 220 is pulled, thereby further improving the stability of the new omnidirectional ultra-high frequency partial discharge sensor device when in use. At the same time, when disassembling the installation bracket 220, the guide plate 370 can be driven to rotate by rotating the connecting rod 2160, so that the second arc block 3140 pushes the second protrusion 3130 to move the two arc cards 390 away from each other. At this time, the installation bracket 220 can be completely pulled out from the outer shell 110, thereby further facilitating the maintenance of electrical components such as the preamplifier 260 and the filter 270.

[0070] Combination Figure 8 As shown, a mounting rod 810 is provided at the outer side wall of the outer shell 110 , a connecting seat 140 is connected to the mounting rod 810 , and a connecting seat through hole 141 is provided at the connecting seat 140 .

[0071] In this embodiment, by providing the connecting base 140 and the connecting base through hole 141, the installer can install the connecting base 140 at the installation position by means of tools such as bolts passing through the connecting base through hole 141, thereby facilitating the installation of the new omnidirectional UHF partial discharge sensor device.

Claims

1. An omnidirectional ultra-high frequency partial discharge sensor device, characterized in that: include: An outer shell (110), wherein a cavity (210) is formed in the outer shell and is opened downward; The mounting bracket (220) is slidably disposed in the outer shell (110), and comprises an upper partition (221) and a lower partition (222), and a connecting plate (223) disposed on the upper partition (221) and the lower partition (222) to directly press and connect the upper partition (221) and the lower partition (222); the upper partition (221) and the lower partition (222) divide the cavity into a cable placement cavity (240) and a mounting cavity (250); a transmission line connected to the mounting cavity (250) by an electrical component is disposed in the cable placement cavity (240); the bottom end surface of the lower partition is covered with a protective cover (130); the protective cover (130) and the mounting bracket (220) are integrated.

2. An omnidirectional ultra-high frequency partial discharge sensor device according to claim 1, characterized in that: The mounting bracket (220) further comprises a mounting plate (2130) and a sealing plate (2120); the upper partition (221), the lower partition (222) and the sealing plate (2120) are arranged in parallel; a mounting cavity (250) is formed between the upper partition (221), the lower partition (222) and the connecting plate (223); the sealing plate (2120) is arranged above the upper partition (221) and is connected to the upper partition (221); the mounting plate (2130) is located between the upper partition (221) and the lower partition (222) and is connected to the sealing plate (2120) via a connecting component passing through the upper partition (221); the lower partition (223) is connected to the sealing plate (2120) via a connecting component passing through the upper partition (221); 222) is provided with a mounting sleeve (2150) extending toward 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 a plurality of fixing seats (610), the fixing seats (610) are provided with fixing seat slots (620) arranged toward the upper partition (221), and the slots are only open toward one side of the upper partition (221), a cable placement cavity (240) is formed between the sealing plate (2120) and the outer shell (110), and electrical components including a preamplifier (260) and a filter (270) are arranged in the mounting cavity (250); The protective cover (130) comprises a cover body and a connecting rod (2160) arranged on the cover body, wherein the lower end of the connecting rod (2160) is connected to the cover body, and the upper end is provided with connecting blocks (710) having the same number as the fixing seat (610), and the connecting blocks (710) extend outwardly along the radial direction of the connecting rod (2160), and a block (720) matching with the fixing seat slot (620) is provided on the side facing the lower partition (222), and the inner side of the end of the mounting sleeve (2150) is also 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 is supported to the upper end of the connecting rod (2160) to drive the connecting rod (2160) to move axially to one side of the lower partition (222) to insert the block (720) into the fixed seat slot (620), and during the rotation of the connecting rod (2160) around the axis, the mounting bracket (220) is driven to rotate through the combination of the block (720) and the fixed seat slot (620).

3. An omnidirectional ultra-high frequency partial discharge sensor device according to claim 2, characterized in that: The mounting bracket (220) is fixed by a mounting bracket fixing mechanism provided on the outer shell (110), the mounting bracket fixing mechanism comprising 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) being provided on the inner wall of the outer shell (110) and spaced apart along the height direction of the outer shell (110); a mounting groove is provided on the upper end surface of the upper partition plate (221); (2110), a sealing plate (2120) is provided at the mounting groove (2110); a mounting groove side through hole (310) is provided at the side wall of the mounting groove (2110), a first limiting column (320) is slidably provided in the mounting groove side through hole (310), and a first spring (320) is provided in the mounting groove (2110) to push 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). 30); a first strip plate (340) is provided at the end of the first limiting column (320) away from the upper blind hole (290), and a first protrusion (350) is provided on the upper end surface of the first strip plate (340); an arc-shaped through hole (360) is provided on the bottom end surface of the mounting groove (2110), a mounting plate (2130) is provided in the mounting cavity (250), and an arc-shaped sheet (2140) capable of rotating in the arc-shaped through hole (360) is provided at the mounting plate (2130), and the arc The end of the arc-shaped sheet (2140) passes through the arc-shaped through hole (360) and extends into the installation groove (2110); the end of the arc-shaped sheet (2140) extending into the installation 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 the arc-shaped sheet (2140) is rotated so as to disengage the first limiting column (320) from the upper blind hole (290) or the lower blind hole (2100).

4. The omnidirectional ultra-high frequency partial discharge sensor device according to claim 3, characterized in that: The bottom end of the mounting bracket (220) is provided with an annular groove (2190) which is gap-matched with the cover body. The lower end of the connecting rod (2160) is arranged to pass through the cover body, and an annular plate (2200) is provided on the part located on the outer side 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 block (720) is pressed into the fixing seat slot (620).

5. The omnidirectional ultra-high frequency partial discharge sensor device according to claim 4, characterized in that: The projection angle of the angle between any point on any clamping block (720) and any point on the adjacent clamping block (720) with respect to the axis of the connecting rod (2160) in any plane perpendicular to the axis of the connecting rod (2160) is greater than the projection angle of the angle between any two points on any fixing seat (610) with respect to the axis of the connecting rod (2160) in any plane perpendicular to the axis of the connecting rod (2160); The projection angle of the angle between any point on any fixed seat (610) and any point on the adjacent fixed seat (610) with respect to the axis of the connecting rod (2160) in any plane perpendicular to the axis of the connecting rod (2160) is greater than the projection angle of the angle between any two points on any clamping block (720) with respect to the axis of the connecting rod (2160) in any plane perpendicular to the axis of the connecting rod (2160).

6. The omnidirectional ultra-high frequency partial discharge sensor device according to claim 4, characterized in that: The end of the connecting rod (2160) extending out of the cover body is also provided with a knurling pattern (730).

7. The omnidirectional ultra-high frequency partial discharge sensor device according to claim 4, characterized in that: A spring baffle is also provided in the installation sleeve (2150), and the spring baffle is connected to the second spring (630) and slides along the axial direction of the installation sleeve (2150).

8. The omnidirectional ultra-high frequency partial discharge sensor device according to claim 4, characterized in that: The upper partition plate (221) is provided with an upper partition plate through hole (2170) penetrating 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 arc-shaped cards (390) arranged opposite to each other; a spring mounting column (3100) is provided at the side wall of the arc-shaped card (390); a spring mounting column (3100) is provided at the spring mounting column (3100) for pressing the two arc-shaped cards (390) together to fix the transmission line connector (2180); 180), a third spring (3110) is fixed thereto, a second strip plate (3120) is also provided at the spring mounting column (3100), a second protrusion (3130) is provided on the upper end surface of the second strip plate (3120), and a second arc block (3140) is provided at the guide plate (370) for pushing the second protrusion (3130) when the arc piece (2140) is rotated so as to move the two arc cards (390) away from each other; when the first limiting column (320) is disengaged from the upper blind hole (290) or the lower blind hole (2100), the required rotation direction of the arc piece (2140) is opposite to the required rotation direction of the arc piece (2140) when the two arc cards (390) are away from each other.

9. The omnidirectional ultra-high frequency partial discharge sensor device according to claim 2, characterized in that: A mounting rod (810) is provided at the outer side wall of the outer shell (110), a connecting seat (140) is connected to the mounting rod (810), and a connecting seat through hole (141) is provided at the connecting seat (140).

10. The omnidirectional ultra-high frequency partial discharge sensor device according to claim 2, characterized in that: The inner wall of the outer shell (110) is provided with a strip groove (420) arranged along its height direction, and the side wall of the connecting plate (223) is provided with a strip protrusion (820) which is loosely matched with the strip groove (420).

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