A high voltage bushing terminal adapter connection device for online monitoring

Abstract

The application relates to a high-voltage bushing end screen adapter connecting device for online monitoring, which comprises a base, a first communicating assembly, a second communicating assembly and an end cover; the base is used for detachable connection with a high-voltage bushing end screen, a first stepped hole is formed in the base, the first stepped hole extends along the axial direction of the base and penetrates through the base, the first communicating assembly is accommodated in the first stepped hole, and the first communicating assembly is used for connection with a core rod of the high-voltage bushing end screen; the end cover is connected to the top end of the base, a second stepped hole is formed in the end cover, the second stepped hole extends along the axial direction of the end cover and penetrates through the end cover, the second communicating assembly is accommodated in the second stepped hole, one end of the second communicating assembly extends out of the second stepped hole, the top end of the end cover is provided with a signal terminal, the extending end of the second communicating assembly is inserted into the signal terminal, and the end, which is away from the signal terminal, of the second communicating assembly is connected with the first communicating assembly; in this way, the sealing property, safety and reliability of the device are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of online monitoring of bushing voltage of power primary equipment, and particularly relates to a high-voltage bushing end screen adapter connecting device for online monitoring. BACKGROUND

[0002] At present, with the development of intelligent technology of power systems, the online monitoring system of bushing voltage of power primary equipment such as transformers and high-voltage reactors is also applied more and more widely. In the existing online monitoring system of bushing voltage, the bushing voltage signal is mainly led out by a connecting device installed at the outlet of the high-voltage bushing end screen. The commonly used connecting device includes a traditional adapter and a wire clamp.

[0003] In order to facilitate long-term voltage detection, the traditional adapter is mainly used.

[0004] However, when the high-voltage bushing fails, a very large overvoltage may be transmitted from the outlet of the high-voltage bushing end screen, causing damage to the measuring equipment or personal injury. At the same time, due to poor sealing, in rainy and snowy weather or in an environment with high air humidity, external moisture will enter the inside of the traditional adapter to form water accumulation or corrode the internal components of the traditional adapter, causing the traditional adapter circuit to short circuit or open circuit, thereby affecting the monitoring. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application aims to provide a high-voltage bushing end screen adapter connecting device for online monitoring, which has the advantages of being able to solve the problem of damage to the measuring equipment or personal injury caused by the failure of the high-voltage bushing, and improving the sealing to prevent external moisture from entering the connecting device.

[0006] The above application object of the present application is achieved by the following technical scheme: a high-voltage bushing end screen adapter connecting device for online monitoring, comprising a base, a first communication assembly, a second communication assembly and an end cover; the base is used for detachable connection with a high-voltage bushing end screen, a first stepped hole is formed in the base, the first stepped hole extends along the axial direction of the base and penetrates through the base, the first communication assembly is accommodated in the first stepped hole, and the first communication assembly is used for connection with a core rod of the high-voltage bushing end screen; the end cover is connected to the top end of the base, a second stepped hole is formed in the end cover, the second stepped hole extends along the axial direction of the end cover and penetrates through the end cover, the second communication assembly is accommodated in the second stepped hole, and one end of the second communication assembly protrudes out of the second stepped hole; a signal terminal is arranged at the top end of the end cover, the protruding end of the second communication assembly is inserted into the signal terminal, and the end of the second communication assembly away from the signal terminal is connected to the first communication assembly.

[0007] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, the first stepped hole comprises a first rotating cavity, a second rotating cavity and a mounting hole, the first rotating cavity, the second rotating cavity and the mounting hole are sequentially communicated, and cross-sectional areas of the first rotating cavity, the second rotating cavity and the mounting hole are gradually reduced.

[0008] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, the second stepped hole comprises a first accommodating cavity, a second accommodating cavity and a via hole, the first accommodating cavity, the second accommodating cavity and the via hole are sequentially communicated, cross-sectional areas of the first accommodating cavity, the second accommodating cavity and the via hole are gradually reduced, and the cross-sectional area of the second accommodating cavity is equal to the cross-sectional area of the first rotating cavity.

[0009] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, an outer periphery wall of a top end of the first rotating cavity is provided with a first outer thread, an inner periphery wall of the first accommodating cavity is provided with a first inner thread, the first outer thread is matched with the first inner thread, the end cover and the base are detachably connected, the first stepped hole and the second stepped hole are communicated, the first rotating cavity, the first accommodating cavity and the second accommodating cavity jointly constitute an accommodating cavity, and the second communication assembly is partially accommodated in the accommodating cavity.

[0010] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, the high-voltage bushing terminal screen adapter connecting device further comprises a first sealing ring and a second sealing ring, an outer wall of the base is provided with a first annular sealing groove and a second annular sealing groove, the first annular sealing groove and the second annular sealing groove are arranged at intervals, the first annular sealing groove extends inward along a radial direction of the first stepped hole, and the first sealing ring is inserted in the first annular sealing groove; the second annular sealing groove extends along a central axis direction of the first stepped hole, and the second sealing ring is inserted in the second annular sealing groove.

[0011] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, an outer periphery wall close to a bottom end of the base is provided with a second outer thread, the second outer thread is located at an opening end of the second annular sealing groove, an inner periphery wall of the high-voltage bushing terminal screen is provided with a second inner thread, the second outer thread is matched with the second inner thread, the base and the high-voltage bushing terminal screen are detachably connected, and the second sealing ring abuts against a top end of the high-voltage bushing terminal screen.

[0012] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application further comprises a voltage limiting element accommodated in the accommodating cavity; the voltage limiting element is used for transient overvoltage protection in a circuit.

[0013] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, the first communication assembly comprises an insulating sleeve, an insulating plate and a conductive assembly, the insulating plate is inserted into the first rotating cavity, the bottom end of the insulating plate abuts against the bottom wall of the first rotating cavity, a through hole is formed in the insulating plate, and the through hole is in communication with the second rotating cavity; the insulating sleeve is inserted into the second rotating cavity, the outer peripheral wall of the insulating sleeve abuts against the inner wall of the second rotating cavity, and the top end of the insulating sleeve abuts against the bottom end of the insulating plate; the conductive assembly is accommodated in the insulating sleeve, one end of the conductive assembly extends out of the through hole, and one end of the core rod of the high-voltage bushing terminal screen abuts against the bottom end of the conductive assembly through the mounting hole.

[0014] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, the conductive assembly comprises a connecting element, a fixing element and a first elastic element arranged between the connecting element and the fixing element, one end of the fixing element extends into the first rotating cavity through the through hole and is connected with the second communication assembly, the other end of the fixing element is accommodated in the insulating sleeve, the first end of the first elastic element abuts against the end of the fixing element away from the second communication assembly, and the second end of the first elastic element abuts against the top end of the connecting element; the connecting element is inserted into the insulating sleeve, and the connecting element can slide along the central axis direction of the insulating sleeve.

[0015] Preferably, the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application, the second communication assembly comprises a second elastic element, a conductive element and an insulating tube, the insulating tube is inserted into the via hole, the outer peripheral wall of the insulating tube abuts against the inner wall of the via hole, and one end of the conductive element penetrates through the insulating tube and is inserted into the signal terminal; one end of the second elastic element is connected with the end of the conductive element away from the signal terminal, and the other end of the second elastic element is connected with the first communication assembly.

[0016] To sum up, the beneficial technical effect of the present application is that the high-voltage bushing terminal screen adapter connecting device for online monitoring provided by the present application comprises a base, a first communication assembly, a second communication assembly and an end cover; the base is used for detachable connection with the high-voltage bushing terminal screen, a first stepped hole is formed in the base, the first stepped hole extends along the axial direction of the base and penetrates through the base, the first communication assembly is accommodated in the first stepped hole, and the first communication assembly is used for connection with the core rod of the high-voltage bushing terminal screen; the end cover is connected to the top end of the base, a second stepped hole is formed in the end cover, the second stepped hole extends along the axial direction of the end cover and penetrates through the end cover, the second communication assembly is accommodated in the second stepped hole, and one end of the second communication assembly protrudes out of the second stepped hole; the top end of the end cover is provided with a signal terminal, the protruding end of the second communication assembly is inserted into the signal terminal, and the end of the second communication assembly away from the signal terminal is connected with the first communication assembly; in this way, compared with long-term voltage detection using a traditional adapter, the sealing property, safety and reliability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic view of the installation structure of the high-voltage bushing terminal screen adapter connecting device and the high-voltage bushing terminal screen provided by the embodiment of the present application.

[0018] Figure 2 FIG. 2 is a schematic view of the overall structure of the high-voltage bushing terminal screen adapter connecting device provided by the embodiment of the present application.

[0019] Figure 3 FIG. 3 is a sectional view of the base in the high-voltage bushing terminal screen adapter connecting device provided by the embodiment of the present application. Figure 1 .

[0020] Figure 4 FIG. 4 is a sectional view of the base in the high-voltage bushing terminal screen adapter connecting device provided by the embodiment of the present application. Figure 2 .

[0021] Figure 5 FIG. 5 is a sectional view of the end cover in the high-voltage bushing terminal screen adapter connecting device provided by the embodiment of the present application. Figure 1 .

[0022] Figure 6 FIG. 6 is a sectional view of the end cover in the high-voltage bushing terminal screen adapter connecting device provided by the embodiment of the present application. Figure 2 .

[0023] Figure 7 FIG. 7 is a sectional view of the insulating sleeve in the high-voltage bushing terminal screen adapter connecting device provided by the embodiment of the present application.

[0024] Figure 8 FIG. 8 is a top view of the insulating sleeve in the high-voltage bushing terminal screen adapter connecting device provided by the embodiment of the present application.

[0025] Figure 9 is the bottom view of the connecting piece in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0026] Figure 10 is the sectional view of the connecting piece in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0027] Figure 11 is the sectional view of the fixing piece in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0028] Figure 12 is the top view of the fixing piece in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0029] Figure 13 is the sectional view of the insulating plate in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0030] Figure 14 is the top view of the insulating plate in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0031] Figure 15 is the sectional view of the insulating tube in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0032] Figure 16 is the top view of the insulating tube in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0033] Figure 17 is the sectional view of the conductive piece in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0034] Figure 18 is the top view of the conductive piece in the high-voltage bushing end screen adapter connecting device provided by the embodiment of the application.

[0035] In the figure, 1, high voltage bushing end shield adapter connecting device; 10, base; 101, first stepped hole; 1011, first rotating cavity; 1012, second rotating cavity; 1013, mounting hole; 1014, threaded hole; 102, first connecting column; 1021, first external thread; 1022, first annular sealing groove; 103, second connecting column; 1031, second annular sealing groove; 104, third connecting column; 1041, second external thread; 20, first communication assembly; 201, insulating sleeve; 202, insulating plate; 2021, through hole; 2022, connecting hole; 203, connecting piece; 2031, groove; 204, fixing piece; 2041, bottom plate; 2042, stud; 205, first elastic piece; 206, fastening bolt; 207, first gasket; 208, second gasket; 209, annular gasket; 210, nut; 30, second communication assembly; 301, second elastic piece; 302, conductive piece; 3021, first fixed rod; 3022, second fixed rod; 3023, stop plate; 303, insulating tube; 3031, flange; 40, end cover; 401, second stepped hole; 4011, first accommodating cavity; 4012, second accommodating cavity; 4013, via hole; 4014, first internal thread; 50, signal terminal; 60, first sealing ring; 70, second sealing ring; 80, voltage limiting piece; 90, accommodating cavity; 2, high voltage bushing end shield; 21, core rod; 22, second internal thread. DETAILED DESCRIPTION

[0036] The application will be further described below in conjunction with the drawings.

[0037] REFERENCE Figures 1 to 4 The application discloses a high voltage bushing end shield adapter connecting device 1 for online monitoring, comprising a base 10, a first communication assembly 20, a second communication assembly 30 and an end cover 40; the base 10 is used for detachable connection with a high voltage bushing end shield 2, the base 10 is provided with a first stepped hole 101, the first stepped hole 101 extends along the axial direction of the base 10 and penetrates through the base 10, the first communication assembly 20 is accommodated in the first stepped hole 101, and the first communication assembly 20 is used for connection with a core rod 21 of the high voltage bushing end shield; the base 10 is detachably connected with the high voltage bushing end shield 2, so that the installation and replacement of the high voltage bushing end shield adapter connecting device 1 are facilitated; meanwhile, the first stepped hole 101 is provided in the base 10, and compared with a hole with an unchanged diameter, the wall thickness of the base 10 is increased under the condition that the first communication assembly 20 can be accommodated, so that the firmness of the base 10 is improved.

[0038] For example, the base 10 can be in a cylindrical shape, and of course, the base 10 can also be in a cuboid shape. Figure 3In the cylindrical implementation of the base 10, the base 10 comprises a first connecting column 102, a second connecting column 103 and a third connecting column 104, which are sequentially connected, wherein the central axes of the first connecting column 102, the second connecting column 103 and the third connecting column 104 are arranged in line, and the first connecting column 102, the second connecting column 103 and the third connecting column 104 can be integrally formed by casting.

[0039] In the above embodiment, the cross-sectional areas of the third connecting column 104, the first connecting column 102 and the second connecting column 103 increase one by one, that is, the diameter of the third connecting column 104 is smaller than the diameter of the first connecting column 102, and the diameter of the first connecting column 102 is smaller than the diameter of the second connecting column 103.

[0040] Wherein, taking the orientation shown in the figure as an example, the hole diameters of the first stepped hole 101 decrease one by one from top to bottom. Figure 3

[0041] Further, the first stepped hole 101 comprises a first rotating cavity 1011, a second rotating cavity 1012 and a mounting hole 1013, which are sequentially communicated, and the cross-sectional areas of the first rotating cavity 1011, the second rotating cavity 1012 and the mounting hole 1013 decrease one by one; the wall thickness of the base 10 gradually increases, thereby improving the firmness of the base 10.

[0042] Wherein, the bottom end of the first rotating cavity 1011 is provided with a plurality of threaded holes 1014, which are arranged at intervals around the circumference of the first rotating cavity 1011. Referring to Figure 3 and Figure 4 In this embodiment, four threaded holes 1014 are provided at the bottom end of the first rotating cavity 1011, the threaded holes 1014 extend along the central axis direction of the first stepped hole 101, and the threaded holes 1014 are blind holes. Referring to Figure 1 In this embodiment, one end of the core rod 21 of the high-voltage bushing end screen passes through the mounting hole 1013 and is connected to the first communicating assembly 20, in order to avoid the core rod 21 contacting the inner peripheral wall of the mounting hole 1013, the hole diameter of the mounting hole 1013 is greater than the diameter of the core rod 21.

[0043] Continuing to refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 ​In the embodiment, the end cover 40 is connected to the top end of the base 10, the second stepped hole 401 is formed in the end cover 40, the second stepped hole 401 extends along the axial direction of the end cover 40 and penetrates the end cover 40, the second communication assembly 30 is accommodated in the second stepped hole 401 and one end of the second communication assembly 30 extends out of the second stepped hole 401, the top end of the end cover 40 is provided with the signal terminal 50, the extending end of the second communication assembly 30 is inserted into the signal terminal 50, and the end of the second communication assembly 30 away from the signal terminal 50 is connected to the first communication assembly 20; the extending end of the second communication assembly 30 is connected to the signal terminal 50, so that the measuring device connected to the signal terminal 50 obtains the bushing voltage signal.

[0044] It should be noted that the bottom end of the signal terminal 50 abuts against the top end of the end cover 40, and the open end of the signal terminal 50 is correspondingly arranged with the second stepped hole 401, at this time, the signal terminal 50 covers the second stepped hole 401, avoiding impurities from the outside entering the high-voltage bushing terminal screen adapter connecting device 1 through the second stepped hole 401, thereby improving the sealing performance and service life of the high-voltage bushing terminal screen adapter connecting device 1.

[0045] Among them, the signal terminal 50 can be selected from the commonly used BNC, UHF and other types of terminal heads on the market, which can be selected according to the specific circumstances, and the embodiment does not limit it here.

[0046] Specifically, taking the orientation shown in Figure 6 as an example, the hole diameter of the second stepped hole 401 gradually decreases from bottom to top.

[0047] Continuing to refer to Figure 5 and Figure 6 , in the embodiment, the second stepped hole 401 includes a first accommodating cavity 4011, a second accommodating cavity 4012 and a via hole 4013, the first accommodating cavity 4011, the second accommodating cavity 4012 and the via hole 4013 are sequentially communicated, and the cross-sectional area of the first accommodating cavity 4011, the second accommodating cavity 4012 and the via hole 4013 gradually decreases; the wall thickness of the end cover 40 gradually increases, thereby improving the firmness of the end cover 40.

[0048] Continuing to refer to Figure 1 and Figure 2The cross-sectional area of the second accommodating cavity 4012 is equal to the cross-sectional area of the first rotating cavity 1011; the cross-sectional area of the first accommodating cavity 4011 is greater than the cross-sectional area of the first rotating cavity 1011, when the end cover 40 is connected with the base 10, the top end of the base 10 abuts against the bottom wall of the first accommodating cavity 4011, and the end of the end cover 40 away from the signal terminal 50 abuts against the top end of the second connecting column 103, thereby avoiding impurities from the outside into the high-voltage bushing terminal screen adapter connecting device 1, and improving the sealing between the base 10 and the end cover 40; meanwhile, when the end cover 40 is installed, the second connecting column 103 provides a stop action for the end cover 40.

[0049] In the above embodiment, when the end cover 40 is covered on the base 10, the inner peripheral wall of the first rotating cavity 1011 is flush with the inner peripheral wall of the second accommodating cavity 4012.

[0050] Continuing to refer to Figures 1 to 6 In the present embodiment, the outer peripheral wall of the top end of the first rotating cavity 1011 is provided with a first external thread 1021, and the inner peripheral wall of the first accommodating cavity 4011 is provided with a first internal thread 4014, the first external thread 1021 cooperates with the first internal thread 4014 to enable the end cover 40 to be detachably connected with the base 10, the first stepped hole 101 communicates with the second stepped hole 401, the first rotating cavity 1011, the first accommodating cavity 4011 and the second accommodating cavity 4012 jointly constitute a containing cavity 90, and the second connecting assembly 30 is partially contained in the containing cavity 90; by using the threaded connection between the end cover 40 and the base 10, it is convenient to maintain the high-voltage bushing terminal screen adapter connecting device 1.

[0051] It should be noted that the first external thread 1021 is arranged on the outer peripheral wall of the first connecting column 102, and the first internal thread 4014 is arranged on the inner peripheral wall of the first accommodating cavity 4011. Figure 3 For example, the first external thread 1021 extends downward along the central axis of the first connecting column 102 from the top end of the first connecting column 102.

[0052] Of course, the end cover 40 and the base 10 can also be connected in a clamping manner, and the end cover 40 and the base 10 can also be connected in a bolted manner.

[0053] Further, the high-voltage bushing end screen adapter connecting device 1 provided by the embodiment further comprises a first sealing ring 60 and a second sealing ring 70, and the outer wall of the base 10 is provided with a first annular sealing groove 1022 and a second annular sealing groove 1031, the first annular sealing groove 1022 and the second annular sealing groove 1031 are arranged at intervals, the first annular sealing groove 1022 extends radially inward along the first stepped hole 101, and the first sealing ring 60 is inserted into the first annular sealing groove 1022.

[0054] With reference to the foregoing Figures 1 to 4 In the embodiment, the first annular sealing groove 1022 is arranged on the outer circumferential wall of the bottom end of the first connecting column 102, and it should be noted that the first annular sealing groove 1022 is arranged adjacent to the first external thread 1021, the first annular sealing groove 1022 extends radially inward along the first connecting column 102, the first sealing ring 60 is inserted into the first annular sealing groove 1022, and the outer circumferential wall of the first sealing ring 60 abuts against the inner circumferential wall of the first annular sealing groove 1022, thereby improving the sealing property of the first sealing ring 60.

[0055] The second annular sealing groove 1031 extends along the central axis direction of the first stepped hole 101, and the second sealing ring 70 is inserted into the second annular sealing groove 1031, thereby improving the sealing property between the base 10 and the high-voltage bushing end screen 2 when the base 10 is installed on the high-voltage bushing end screen 2, and avoiding external moisture from entering the high-voltage bushing end screen adapter connecting device 1.

[0056] Specifically, the second annular sealing groove 1031 is arranged at the bottom end of the second connecting column 103, and the second annular sealing groove 1031 extends upward along the central axis direction of the second connecting column 103. Figure 3 For example, the second annular sealing groove 1031 extends upward along the central axis direction of the second connecting column 103, the second sealing ring 70 is inserted into the second annular sealing groove 1031, and the outer circumferential wall of the second sealing ring 70 abuts against the inner circumferential wall of the second annular sealing groove 1031, thereby improving the sealing property of the second sealing ring 70.

[0057] With reference to the foregoing Figures 1 to 4In the embodiment, the outer peripheral wall close to the bottom end of the base 10 is provided with a second external thread 1041, the second external thread 1041 is located at the opening end of the second annular sealing groove 1031, the inner peripheral wall of the high-voltage sleeve end screen 2 is provided with a second internal thread 22, the second external thread 1041 cooperates with the second internal thread 22, the base 10 is detachably connected with the high-voltage sleeve end screen 2, and the second sealing ring 70 abuts against the top end of the high-voltage sleeve end screen 2. On the one hand, the base 10 and the high-voltage sleeve end screen 2 are connected by thread connection, thereby facilitating the installation and replacement of the high-voltage sleeve end screen adapter connecting device 1. On the other hand, the second sealing ring 70 abuts against the top end of the high-voltage sleeve end screen 2, thereby improving the sealing between the base 10 and the high-voltage sleeve end screen 2.

[0058] Specifically, the second external thread 1041 is opened on the outer peripheral wall of the third connecting column 104. In the installation process, the bottom end of the base 10 is screwed into the high-voltage sleeve end screen 2, the second external thread 1041 cooperates with the second internal thread 22, and the connection between the base 10 and the high-voltage sleeve end screen 2 is realized. At this time, the top end of the high-voltage sleeve end screen 2 abuts against the bottom end of the second connecting column 103, and the side of the second sealing ring 70 away from the end cover 40 abuts against the top end of the high-voltage sleeve end screen 2. Thus, the sealing between the high-voltage sleeve end screen adapter connecting device 1 and the high-voltage sleeve end screen 2 is improved.

[0059] Continuing to refer to Figure 1 and Figure 2 Further, the first communication assembly 20 includes an insulating sleeve 201, an insulating plate 202, and a conductive assembly. The insulating plate 202 is inserted into the first rotating cavity 1011, the bottom end of the insulating plate 202 abuts against the bottom wall of the first rotating cavity 1011, a through hole 2021 is opened on the insulating plate 202, and the through hole 2021 is in communication with the second rotating cavity 1012. The insulating sleeve 201 is inserted into the second rotating cavity 1012, the outer peripheral wall of the insulating sleeve 201 abuts against the inner wall of the second rotating cavity 1012, and the top end of the insulating sleeve 201 abuts against the bottom end of the insulating plate 202. The conductive assembly is accommodated in the insulating sleeve 201, one end of the conductive assembly extends out of the through hole 2021, and one end of the core rod 21 of the high-voltage sleeve end screen abuts against the bottom end of the conductive assembly through the mounting hole 1013. On the one hand, by arranging the insulating plate 202 and the insulating sleeve 201, the base 10 is prevented from conducting electricity in the process of conducting electricity between the conductive assembly and the core rod 21 of the high-voltage sleeve end screen. On the other hand, the outer peripheral wall of the insulating sleeve 201 abuts against the inner wall of the second rotating cavity 1012, thereby improving the friction between the insulating sleeve 201 and the second rotating cavity 1012, and preventing the insulating sleeve 201 from shaking during use.

[0060] Continuing to refer to Figure 1 and Figure 2 and Figure 7 andFigure 8 In use, the central axis of the insulating sleeve 201 is arranged in parallel with the central axis of the second rotating cavity 1012, and in some possible implementations, the central axis of the insulating sleeve 201 is arranged in line with the central axis of the second rotating cavity 1012. In this case, the hole diameter of the insulating sleeve 201 is greater than the hole diameter of the mounting hole 1013, so that the cross-sectional area of the conductive assembly is increased, thereby facilitating the connection of the core rod 21 of the high-voltage bushing terminal screen to the conductive assembly.

[0061] With reference to Figure 1 and Figure 2 , and Figure 13 and Figure 14 , in this embodiment, the insulating plate 202 is circular, and the through hole 2021 is arranged at the center of the insulating plate 202. The central axis of the through hole 2021 is arranged in line with the central axis of the insulating plate 202. In use, the through hole 2021 is in communication with the second rotating cavity 1012, and the central axis of the through hole 2021 is arranged in line with the central axis of the insulating sleeve 201. In this case, the hole diameter of the through hole 2021 is smaller than the hole diameter of the insulating sleeve 201, that is, the insulating plate 202 is arranged at the top end of the insulating sleeve 201. Thus, the insulating plate 202 functions as a stop for the conductive assembly.

[0062] Specifically, the insulating plate 202 is provided with a plurality of connecting holes 2022 arranged at intervals around the circumference of the insulating plate 202. In this embodiment, the insulating plate 202 is provided with four connecting holes 2022, and the connecting holes 2022 extend along the central axis of the insulating plate 202. The connecting holes 2022 are arranged in one-to-one correspondence with the threaded holes 1014.

[0063] With reference to Figure 1 and Figure 2 , the first communication assembly 20 further comprises a fastening bolt 206, a first gasket 207, and a second gasket 208. The first gasket 207 and the second gasket 208 are each provided with a fixing hole, and one end of the fastening bolt 206 passes through the fixing holes of the first gasket 207 and the second gasket 208 in sequence, so that the first gasket 207 and the second gasket 208 are arranged on the fastening bolt 206. Figure 1 For example, the second gasket 208 is located below the first gasket 207, and the bottom end of the first gasket 207 abuts against the top end of the second gasket 208. In use, one end of the fastening bolt 206, on which the first gasket 207 and the second gasket 208 are arranged, is screwed into the threaded hole 1014 through the connecting hole 2022, so that the insulating plate 202 is connected to the base 10. At this time, the bottom end of the second gasket 208 abuts against the top end of the insulating plate 202, thereby preventing the insulating plate 202 from moving relative to the base 10 and improving the firmness of the connection between the insulating plate 202 and the base 10.

[0064] Further, the conductive assembly comprises the connecting piece 203, the fixing piece 204, and the first elastic piece 205 arranged between the connecting piece 203 and the fixing piece 204, one end of the fixing piece 204 extends into the first rotating cavity 1011 through the through hole 2021 and is connected with the second communication assembly 30, the other end of the fixing piece 204 is accommodated in the insulating sleeve 201, the first end of the first elastic piece 205 abuts against the end of the fixing piece 204 away from the second communication assembly 30, and the second end of the first elastic piece 205 abuts against the top end of the connecting piece 203; the connecting piece 203 is inserted into the insulating sleeve 201 and can slide along the central axis direction of the insulating sleeve 201; the first elastic piece 205 is in a compressed state, and when the high-voltage bushing terminal screen adapter connecting device 1 is not connected with the high-voltage bushing terminal screen 2, the first elastic piece 205 provides a restoring force for the connecting piece 203, the first elastic piece 205 pushes the connecting piece 203 to slide along the central axis direction of the insulating sleeve 201, and the bottom end of the connecting piece 203 abuts against the bottom wall of the second rotating cavity 1012, at this time, the high-voltage bushing terminal screen adapter connecting device 1 is in a short-circuit state; when the high-voltage bushing terminal screen adapter connecting device 1 is connected with the high-voltage bushing terminal screen 2, one end of the core rod 21 of the high-voltage bushing terminal screen abuts against the bottom end of the connecting piece 203 through the mounting hole 1013, overcomes the restoring force of the first spring, and pushes the connecting piece 203 to slide upward along the central axis direction of the insulating sleeve 201, at this time, the high-voltage bushing terminal screen adapter connecting device 1 is in a power-on state; thus, it is convenient to detect whether the core rod 21 abuts against the connecting piece 203 by using a universal variable detector.

[0065] By arranging the first elastic piece 205, the high-voltage bushing terminal screen adapter connecting device 1 can match core rods 21 of various lengths, and compared with the high-voltage bushing terminal screen adapter connecting device 1 matching only one length of core rod 21, the cost is saved.

[0066] It should be noted that the first end of the first elastic piece 205 is the top end of the first elastic piece 205, and the second end of the first elastic piece 205 is the bottom end of the first elastic piece 205.

[0067] Continuing to refer to Figure 9 and Figure 10 , specifically, the connecting piece 203 is in a cylindrical shape, in the use process, the central axis of the connecting piece 203 coincides with the central axis of the insulating sleeve 201, the connecting piece 203 is inserted into the insulating sleeve 201, and the outer peripheral wall of the connecting piece 203 abuts against the inner peripheral wall of the insulating sleeve 201.

[0068] The bottom end of the connecting piece 203 is provided with a groove 2031, the top end of the core rod 21 is inserted into the groove 2031, and the top end of the core rod 21 abuts against the bottom wall of the groove 2031. For example, the cross-sectional shape of the groove 2031 can be circular, and of course, the cross-sectional shape of the groove 2031 can also be rectangular or other polygons. In the implementation manner in which the cross-sectional shape of the groove 2031 is circular, the diameter of the groove 2031 is greater than the diameter of the core rod 21, so that the connection of the core rod 21 and the connecting piece 203 is facilitated.

[0069] With reference to the foregoing Figure 11 and Figure 12 , specifically, the cross-sectional shape of the fixing piece 204 is inverted T-shaped in a plane parallel to the central axis of the insulating sleeve 201. The fixing piece 204 includes a bottom plate 2041 and a stud 2042, one end of the stud 2042 is connected with the bottom plate 2041, and the central axis of the stud 2042 is arranged perpendicularly to the bottom plate 2041.

[0070] For example, the bottom plate 2041 can be circular, and of course, the bottom plate 2041 can also be rectangular or other polygons. In the implementation manner in which the bottom plate 2041 is circular, the central axis of the stud 2042 coincides with the central axis of the bottom plate 2041, in the use process, one end of the stud 2042 away from the bottom plate 2041 penetrates through the through hole 2021 and extends into the first rotating cavity 1011, the bottom plate 2041 is accommodated in the insulating sleeve 201, and one side of the bottom plate 2041 facing the stud 2042 abuts against the bottom end of the insulating plate 202.

[0071] In the above embodiment, the conductive assembly further includes an annular gasket 209 and a nut 210, the annular gasket 209 is sleeved on the stud 2042, and the bottom end of the annular gasket 209 abuts against the top end of the insulating plate 202, the nut 210 is screwed on one end of the stud 2042 away from the bottom plate 2041, and the bottom end of the nut 210 abuts against the top end of the annular gasket 209, so that the fixing piece 204 is connected with the insulating plate 202, and movement of the fixing piece 204 relative to the insulating plate 202 is avoided in the use process.

[0072] For example, the first elastic piece 205 can be a spiral spring, and of course, the first elastic piece 205 can also be a sleeve with elasticity, and it should be noted that the first elastic piece 205 needs to be made of a material with conductive performance. In the implementation manner in which the first elastic piece 205 is a spiral spring, the diameter of the spiral spring is smaller than the diameter of the bottom plate 2041 and the connecting piece 203, so that the top end of the spiral spring abuts against the bottom plate 2041, and the bottom end of the spiral spring abuts against the connecting piece 203.

[0073] With reference to the foregoing Figure 1 and Figure 2In the embodiment, the second communication assembly 30 comprises a second elastic member 301, a conductive member 302, and an insulating tube 303. The insulating tube 303 is inserted into the through hole 4013, and the outer circumferential wall of the insulating tube 303 abuts against the inner wall of the through hole 4013. One end of the conductive member 302 penetrates through the insulating tube 303 and is inserted into the signal terminal 50. One end of the second elastic member 301 is connected to the end of the conductive member 302 away from the signal terminal 50, and the other end of the second elastic member 301 is connected to the first communication assembly 20. By arranging the second elastic member 301, when the end cover 40 is installed, as the end cover 40 is screwed downward, the end cover 40 drives the conductive member 302 to move downward. At this time, the conductive member 302 provides pressure to the second elastic member 301, so that the second elastic member 301 is compressed, thereby facilitating the installation of the end cover 40. At the same time, the second elastic member 301 also plays a buffering role for the downward movement of the end cover 40.

[0074] In the embodiment, the second communication assembly 30 comprises a second elastic member 301, a conductive member 302, and an insulating tube 303. The insulating tube 303 is inserted into the through hole 4013, and the outer circumferential wall of the insulating tube 303 abuts against the inner wall of the through hole 4013. One end of the conductive member 302 penetrates through the insulating tube 303 and is inserted into the signal terminal 50. One end of the second elastic member 301 is connected to the end of the conductive member 302 away from the signal terminal 50, and the other end of the second elastic member 301 is connected to the first communication assembly 20. By arranging the second elastic member 301, when the end cover 40 is installed, as the end cover 40 is screwed downward, the end cover 40 drives the conductive member 302 to move downward. At this time, the conductive member 302 provides pressure to the second elastic member 301, so that the second elastic member 301 is compressed, thereby facilitating the installation of the end cover 40. At the same time, the second elastic member 301 also plays a buffering role for the downward movement of the end cover 40.

[0075] With reference to Figure 15 and Figure 16 , specifically, one end of the insulating tube 303 is inserted into the through hole 4013, the top end of the insulating tube 303 is flush with the top end of the end cover 40, and the bottom end of the insulating tube 303 is provided with a flange 3031 extending outward along the radial direction of the insulating tube 303. The flange 3031 abuts against the bottom wall of the second accommodating cavity 4012. By abutting the flange 3031 against the bottom wall of the second accommodating cavity 4012, the movement of the insulating tube 303 along the central axis of the through hole 4013 is avoided.

[0076] With reference to Figure 17 and Figure 18 , in the embodiment, the cross-sectional shape of the conductive member 302 can be cross-shaped, and the cross-sectional shape of the conductive member 302 can also be T-shaped, with a plane parallel to the central axis of the insulating tube 303 as the cross section. In the implementation mode in which the cross-sectional shape of the conductive member 302 is cross-shaped, the conductive member 302 comprises a first fixed rod 3021, a second fixed rod 3022, and a stop plate 3023 arranged between the first fixed rod 3021 and the second fixed rod 3022. The central axis of the first fixed rod 3021 is arranged in parallel with the central axis of the second fixed rod 3022, and the central axes of the first fixed rod 3021 and the second fixed rod 3022 are perpendicular to the stop plate 3023. The first fixed rod 3021, the second fixed rod 3022, and the stop plate 3023 can be integrally formed by casting.

[0077] In use, the first fixed rod 3021 is inserted into the signal terminal 50 through the insulating tube 303, and the stop plate 3023 abuts against the bottom end of the flange 3031, thereby avoiding movement of the conductive part 302 along the central axis of the insulating tube 303. The second fixed rod 3022 is inserted into the second elastic part 301, the top end of the second elastic part 301 abuts against the bottom end of the stop plate 3023, the end of the second elastic part 301 away from the second fixed rod 3022 is sleeved on the stud 2042, and the bottom end of the second elastic part 301 abuts against the side of the nut 210 away from the annular gasket 209. When the end cover 40 is connected to the base 10, the bottom end of the second fixed rod 3022 is spaced apart from the top end of the stud 2042 by a certain distance, thereby achieving electrical conduction while improving the pre-tightening force of the end cover 40.

[0078] It should be noted that a predetermined distance is provided between the second fixed rod 3022 and the stud 2042, so that when the end cover 40 is tightened, the second elastic part 301 is compressed, facilitating installation of the end cover 40; at the same time, the second elastic part 301 also serves as a buffer for downward movement of the end cover 40.

[0079] The second insulating part is substantially identical to the first insulating part in structure and material, and will not be repeated here.

[0080] Continuing to refer to Figure 1 and Figure 2 , the high-voltage bushing terminal screen adapter connecting device 1 further comprises a voltage limiting part 80 accommodated in the accommodating cavity 90; the voltage limiting part 80 is used for transient overvoltage protection in the circuit; by providing the voltage limiting part 80, when the circuit is subjected to overvoltage, the voltage limiting part 80 clamps the voltage to a relatively fixed voltage value, achieving protection of the circuit, thereby improving the service life of the high-voltage bushing terminal screen adapter connecting device 1; at the same time, damage to workers during transient overvoltage is avoided, improving the safety of use of the high-voltage bushing terminal screen adapter connecting device 1.

[0081] In some implementable embodiments, the voltage limiting part 80 can be a pressure-sensitive resistor, one pin of the pressure-sensitive resistor is provided between the nut 210 and the annular gasket 209, and the other pin of the pressure-sensitive resistor is provided between the first gasket 207 and the second gasket 208, achieving connection of the pressure-sensitive resistor.

[0082] The high-voltage bushing terminal screen adapter connecting device 1 can comprise a plurality of voltage limiting parts 80, and the plurality of voltage limiting parts 80 are spaced apart around the circumference of the first rotating cavity 1011. In this embodiment, the high-voltage bushing terminal screen adapter connecting device 1 comprises two voltage limiting parts 80.

[0083] Of course, the voltage limiting part 80 can also be a voltage limiting element such as a voltage stabilizing diode.

[0084] Before and after the installation of the high-voltage bushing terminal screen adapter connecting device 1, the multimeter is used for detection to ensure that the core rod 21 of the high-voltage bushing terminal screen is connected with the connecting piece 203.

[0085] The detection process is as follows:

[0086] Firstly, before the installation of the high-voltage bushing terminal screen adapter connecting device 1, one probe of the multimeter is connected with the signal output port of the signal terminal 50, and the other probe is connected with the outer circumferential wall of the base 10 / cover 40. If the on-off detection function of the multimeter is used, the multimeter should show a conduction state under normal circumstances; if the resistance measurement function of the multimeter is used, the multimeter should measure a very small resistance value under normal circumstances.

[0087] Secondly, before the installation of the high-voltage bushing terminal screen adapter connecting device 1, one probe of the multimeter is inserted through the installation hole 1013 and abuts against the bottom wall of the recess 2031, and the connecting piece 203 is pushed to slide a certain distance along the central axis direction of the insulating sleeve 201, and the other probe is connected with the signal output port of the signal terminal 50. Under normal circumstances, the multimeter should show a conduction state (on-off detection function) or measure a very small resistance value (resistance measurement function).

[0088] Thirdly, before the installation of the high-voltage bushing terminal screen adapter connecting device 1, one probe of the multimeter is inserted through the installation hole 1013 and abuts against the bottom wall of the recess 2031, and the connecting piece 203 is pushed to slide a certain distance along the central axis direction of the insulating sleeve 201, and the other probe is connected with the outer circumferential wall of the base 10 / cover 40. Under normal circumstances, the multimeter should show a disconnection state (on-off detection function) or measure a very large resistance value (resistance measurement function).

[0089] Fourthly, after the installation of the high-voltage bushing terminal screen adapter connecting device 1, one probe of the multimeter is connected with the signal output port of the signal terminal 50, and the other probe is connected with the outer circumferential wall of the base 10 / cover 40. Under normal circumstances, the multimeter should show a disconnection state (on-off detection function) or measure a very large resistance value (resistance measurement function).

[0090] The high-voltage bushing end screen adapter connecting device 1 for online monitoring provided by the embodiment comprises a base 10, a first communication assembly 20, a second communication assembly 30 and an end cover 40; the base 10 is used for detachable connection with a high-voltage bushing end screen 2, a first stepped hole 101 is formed in the base 10, the first stepped hole 101 extends along the axial direction of the base 10 and penetrates through the base 10, the first communication assembly 20 is accommodated in the first stepped hole 101, and the first communication assembly 20 is used for connection with a core rod 21 of the high-voltage bushing end screen; the end cover 40 is connected to the top end of the base 10, a second stepped hole 401 is formed in the end cover 40, the second stepped hole 401 extends along the axial direction of the end cover 40 and penetrates through the end cover 40, the second communication assembly 30 is accommodated in the second stepped hole 401, and one end of the second communication assembly 30 protrudes out of the second stepped hole 401, a signal terminal 50 is arranged at the top end of the end cover 40, the protruding end of the second communication assembly 30 is inserted into the signal terminal 50, and the end of the second communication assembly 30 away from the signal terminal 50 is connected with the first communication assembly 20; in this way, compared with long-term voltage detection by using a traditional adapter, the sealing property, safety and reliability are improved.

[0091] The high-voltage bushing end screen adapter connecting device 1 for online monitoring provided by the application has the following advantages: simple structure, easy manufacturing and convenient operation.

[0092] It should be noted that, in this text, relational terms such as first and second and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between or among the entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a... " does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0093] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the application, and are not limitations on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the application.

Claims

1. A high voltage bushing tap adapter connection device for online monitoring, characterized by: The base, the first communication assembly, the second communication assembly and the end cover are included. The base is used for detachable connection with a high-voltage bushing terminal screen, a first stepped hole is formed in the base, the first stepped hole extends along the axial direction of the base and penetrates through the base, the first communication assembly is accommodated in the first stepped hole, and the first communication assembly is used for connection with a core rod of the high-voltage bushing terminal screen. The end cover is connected to the top end of the base, a second stepped hole is formed in the end cover, the second stepped hole extends along the axial direction of the end cover and penetrates through the end cover, the second communication assembly is accommodated in the second stepped hole, one end of the second communication assembly protrudes out of the second stepped hole, a signal terminal is arranged at the top end of the end cover, the protruding end of the second communication assembly is inserted into the signal terminal, and the end of the second communication assembly, which is away from the signal terminal, is connected to the first communication assembly. The first stepped hole includes a first rotating cavity, a second rotating cavity and a mounting hole, the first rotating cavity, the second rotating cavity and the mounting hole are sequentially communicated, and the cross-sectional areas of the first rotating cavity, the second rotating cavity and the mounting hole gradually decrease. The second stepped hole includes a first accommodating cavity, a second accommodating cavity and a via hole, the first accommodating cavity, the second accommodating cavity and the via hole are sequentially communicated, and the cross-sectional areas of the first accommodating cavity, the second accommodating cavity and the via hole gradually decrease. The cross-sectional area of the second accommodating cavity is equal to the cross-sectional area of the first rotating cavity. The second communication assembly includes a second elastic member, a conductive member and an insulating tube, the insulating tube is inserted into the via hole, the outer peripheral wall of the insulating tube abuts against the inner wall of the via hole, and one end of the conductive member penetrates through the insulating tube and is inserted into the signal terminal. One end of the second elastic member is connected to the end of the conductive member, which is away from the signal terminal, and the other end of the second elastic member is connected to the first communication assembly. The conductive member includes a first fixed rod, a second fixed rod and a stop plate arranged between the first fixed rod and the second fixed rod, the central axis of the first fixed rod is arranged in parallel with the central axis of the second fixed rod, and the central axes of the first fixed rod and the second fixed rod are perpendicular to the stop plate. The first fixed rod is inserted into the signal terminal through the insulating tube, the stop plate abuts against the bottom end of the flange, The second fixed rod is inserted into the second elastic member, the top end of the second elastic member abuts against the bottom end of the stop plate, the end of the second elastic member, which is away from the second fixed rod, is sleeved on the stud, and the bottom end of the second elastic member abuts against the side of the nut, which is away from the annular gasket; the bottom end of the second fixed rod is spaced apart from the top end of the stud by a certain distance. The first communication assembly includes an insulating sleeve, an insulating plate and a conductive assembly, the insulating plate is inserted into the first rotating cavity, the bottom end of the insulating plate abuts against the bottom wall of the first rotating cavity, a through hole is formed in the insulating plate, and the through hole is communicated with the second rotating cavity. The insulating sleeve is inserted into the second rotating cavity, the outer peripheral wall of the insulating sleeve abuts against the inner wall of the second rotating cavity, and the top end of the insulating sleeve abuts against the bottom end of the insulating plate; The conductive assembly is accommodated in the insulating sleeve, one end of the conductive assembly protrudes out of the through hole, and one end of the core rod of the high-voltage bushing terminal screen abuts against the bottom end of the conductive assembly through the mounting hole; The conductive assembly comprises a connecting piece, a fixing piece, and a first elastic piece arranged between the connecting piece and the fixing piece, one end of the fixing piece protrudes into the first rotating cavity through the through hole and is connected with the second communication assembly, the other end of the fixing piece is accommodated in the insulating sleeve, the first end of the first elastic piece abuts against the end of the fixing piece away from the second communication assembly, and the second end of the first elastic piece abuts against the top end of the connecting piece; The connecting piece is inserted into the insulating sleeve, and the connecting piece can slide along the central axis direction of the insulating sleeve; A plurality of threaded holes are formed in the bottom end of the first rotating cavity and are arranged at intervals around the circumference of the first rotating cavity; a plurality of connecting holes are formed in the insulating plate and are arranged at intervals around the circumference of the insulating plate, and the connecting holes are arranged one by one corresponding to the threaded holes; The first communication assembly further comprises a fastening bolt, a first gasket and a second gasket, a fixing hole is formed in each of the first gasket and the second gasket, one end of the fastening bolt passes through the fixing holes of the first gasket and the second gasket in sequence, so that the first gasket and the second gasket are sleeved on the fastening bolt, and one end of the fastening bolt with the first gasket and the second gasket sleeved thereon passes through the connecting hole and is screwed into the threaded hole, so that the insulating plate is connected with the base; The fixing piece comprises a bottom plate and a stud, one end of the stud is connected with the bottom plate, and the central axis of the stud is arranged perpendicularly to the bottom plate; The conductive assembly further comprises an annular gasket and a nut, the annular gasket is sleeved on the stud, and the bottom end of the annular gasket abuts against the top end of the insulating plate, the nut is screwed into the end of the stud away from the bottom plate, and the bottom end of the nut abuts against the top end of the annular gasket, so that the fixing piece is connected with the insulating plate.

2. The high voltage bushing tap adapter connection device for online monitoring of claim 1, wherein: A first external thread is arranged on the outer peripheral wall of the top end of the first rotating cavity, a first internal thread is arranged on the inner peripheral wall of the first accommodating cavity, the first external thread cooperates with the first internal thread, so that the end cover is detachably connected with the base, the first stepped hole is in communication with the second stepped hole, the first rotating cavity, the first accommodating cavity and the second accommodating cavity jointly form an accommodating cavity, and the second communication assembly is partially accommodated in the accommodating cavity.

3. The high voltage bushing tap adapter connection device for online monitoring of claim 1, wherein: The high-voltage bushing terminal screen adapter connecting device further comprises a first sealing ring and a second sealing ring, a first annular sealing groove and a second annular sealing groove are formed in the outer wall of the base, the first annular sealing groove and the second annular sealing groove are arranged at intervals, the first annular sealing groove extends inward along the radial direction of the first stepped hole, and the first sealing ring is inserted into the first annular sealing groove; The second annular sealing groove extends along the central axis direction of the first stepped hole, and the second sealing ring is inserted into the second annular sealing groove.

4. The high voltage bushing tap adapter connection device for online monitoring of claim 3, wherein: A second external thread is arranged on the outer peripheral wall near the bottom end of the base, and the second external thread is located at the opening end of the second annular sealing groove; a second internal thread is arranged on the inner peripheral wall of the high-voltage bushing terminal screen, and the second external thread cooperates with the second internal thread; the base and the high-voltage bushing terminal screen are detachably connected; and the second sealing ring abuts against the top end of the high-voltage bushing terminal screen.

5. The high voltage bushing tap adapter connection device for online monitoring of claim 2, wherein: The high-voltage bushing terminal screen adapter connecting device further comprises a voltage limiting member, and the voltage limiting member is accommodated in the accommodating cavity. The voltage limiting member is used for transient overvoltage protection in a circuit.

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