An intelligent boundary protection device

Abstract

The present invention provides an intelligent boundary protection device, including a pole shell with a receiving chamber, a sensor arranged on the pole shell, a first conductive set arranged at the upper part of the receiving chamber, a second conductive set arranged at the lower part of the receiving chamber, a fuse installed in the receiving chamber and a control terminal connected to the sensor; the upper end of the fuse has a first conductive part that contacts and conducts with the first conductive set and a second conductive part that contacts and conducts with the second conductive set. Advantages of the present invention: through a variety of combined power sensors, the operation status of the distribution line is monitored in real time. If an insulation ground short circuit fault occurs in the distribution line, the control terminal can quickly and reliably determine and confirm the fault type, and remotely transmit data information in real time, so as to quickly isolate the fault point, reduce the power outage area and reduce the adverse effects of large-scale power outages; at the same time, it is convenient for the power supply department to quickly repair and troubleshoot, so as to quickly restore power supply.

Description

[Technical field]

[0001] The invention relates to the field of power distribution protection equipment, and in particular to an intelligent boundary protection device. [Background technology]

[0002] The demarcation switchgear is a protection device for distribution branch lines. When a fault occurs in a distribution line branch or on the user side, if the relay protection action time limit of the demarcation switchgear does not match the relay protection action time limit of the power supply company's substation outgoing switch, the substation outgoing switch will be tripped. Since traditional demarcation switchgear cannot quickly determine the fault, it takes a lot of manpower and material resources to troubleshoot and repair the fault, and affects the normal power supply of the entire distribution line. In view of the above-mentioned problems, the inventor of this case conducted an in-depth study on the problem, which led to the creation of this case. [Summary of the invention]

[0003] The technical problem to be solved by the present invention is to provide an intelligent boundary protection device to solve the problem that the existing boundary switch equipment cannot quickly judge the fault, resulting in a large amount of manpower and material resources being consumed to eliminate the fault and affecting the normal power supply of the distribution line.

[0004] The present invention is implemented as follows: an intelligent boundary protection device includes a pole shell with a receiving chamber, a sensor arranged on the pole shell, a first conductive set arranged at the upper part of the receiving chamber, a second conductive set arranged at the lower part of the receiving chamber, a fuse installed in the receiving chamber and a control terminal connected to the sensor; the upper end of the fuse has a first conductive part that contacts with the first conductive set for electrical conduction and a second conductive part that contacts with the second conductive set for electrical conduction.

[0005] Furthermore, the protection device also includes an insulating shell covering the outside of the pole shell.

[0006] Furthermore, the sensor includes a current sensor.

[0007] Furthermore, the current sensor is a through-type current transformer.

[0008] Furthermore, the current sensor is buried in the middle of the pole shell.

[0009] Furthermore, the current sensor has a first connecting terminal extending to the outside of the insulating housing.

[0010] Furthermore, the current sensor is fixed to the middle part of the outer wall of the insulating housing through a sensor clamp.

[0011] Furthermore, the middle parts of the pole shell and the insulating shell are provided with a clamp blocking convex portion, and the sensor clamp is arranged immediately below the clamp blocking convex portion.

[0012] Furthermore, the current sensor is fixed inside the sensor clamp.

[0013] Furthermore, the current sensor has a first connecting terminal extending to the outside of the sensor clamp.

[0014] Furthermore, the sensor clamp includes a first clamp component and a second clamp component; the first clamp component and the second clamp component are detachably connected.

[0015] Furthermore, the current sensor includes a first current sensing segment buried in the first clamp component and a second current sensing segment buried in the second clamp component.

[0016] Furthermore, one end of the first hoop member has a first fitting surface, and the other end has a second fitting surface.

[0017] Furthermore, one end of the first current sensing section has a first contact end surface flush with the first fitting surface, and the other end has a second contact end surface flush with the second fitting surface.

[0018] Furthermore, one end of the second hoop member has a third fitting surface for fitting with the first fitting surface, and the other end has a fourth fitting surface for fitting with the second fitting surface.

[0019] Furthermore, one end of the second current sensing section has a third contact end surface flush with the third fitting surface and in contact with the first contact end surface, and the other end has a fourth contact end surface flush with the fourth fitting surface and in contact with the second contact end surface.

[0020] Furthermore, one end of the first hoop member and the second hoop member are locked and connected via a locking member.

[0021] Furthermore, a first connecting piece is provided at one end of the first clamping hoop, and a first locking hole is provided on the first connecting piece.

[0022] Furthermore, a second connecting piece is provided at one end of the second clamping hoop, and a second locking hole is provided on the second connecting piece at a position corresponding to the first locking hole.

[0023] Furthermore, the locking component includes a bolt passing through the first locking hole and the second locking hole, and a nut arranged on the bolt.

[0024] Furthermore, the other ends of the first hoop member and the second hoop member are rotatably connected via a rotating member.

[0025] Furthermore, a connecting protrusion is provided at the other end of the first clamping member, and a first axial hole is opened on the connecting protrusion.

[0026] Furthermore, a connecting recess is provided at the other end of the second clamping member, and a second axial hole is opened on the connecting recess at a position corresponding to the first axial hole.

[0027] Furthermore, the rotating member includes a connecting shaft passing through the first axial hole and the second axial hole.

[0028] Furthermore, the sensor also includes a voltage sensor.

[0029] Furthermore, the voltage sensor is a capacitive voltage divider sensor or a resistive-capacitive voltage divider sensor.

[0030] Furthermore, the voltage sensor is buried in the lower part of the pole shell.

[0031] Furthermore, one end of the voltage sensor has a second connection terminal connected to the second conductive sleeve, and the other end has a third connection terminal extending to the outside of the insulating housing.

[0032] Furthermore, the sensor also includes a power supply sensor.

[0033] Furthermore, the power extraction sensor is a capacitive voltage divider sensor or a resistive-capacitive voltage divider sensor.

[0034] Furthermore, the power extraction sensor is buried in the lower part of the pole shell.

[0035] Furthermore, the voltage sensor and the power extraction sensor are buried on the same side of the pole shell.

[0036] Furthermore, one end of the power extraction sensor has a fourth connection terminal connected to the second conductive sleeve, and the other end has a fifth connection terminal extending to the outside of the insulating shell.

[0037] Furthermore, it also includes an incoming cable connected to the first conductive kit and extending to the outside of the insulating shell.

[0038] Furthermore, it also includes an outgoing cable connected to the second conductive set and extending to the outside of the insulating shell.

[0039] Furthermore, the pole shell is a shell formed by casting engineering plastics.

[0040] Furthermore, the pole shell is a shell formed by casting epoxy resin material or composite nylon material.

[0041] Furthermore, the current sensor, the voltage sensor, the power taking sensor, the first conductive kit, the second conductive kit, the incoming cable, the outgoing cable and the pole housing are cast into one piece.

[0042] Furthermore, the voltage sensor, the power extraction sensor, the first conductive kit, the second conductive kit, the incoming cable, the outgoing cable and the pole housing are cast into one piece.

[0043] Furthermore, the inlet of the receiving chamber is located at the bottom of the pole housing.

[0044] Furthermore, a through hole for the fuse to pass through is formed in the middle of the second conductive sleeve.

[0045] Furthermore, the outer side wall of the second conductive set has an outlet cable insertion port.

[0046] Furthermore, the upper end of the first conductive set has an incoming cable insertion port.

[0047] Furthermore, a first conductive spring contact finger is disposed in the inner cavity of the first conductive sleeve, and the first conductive portion contacts and conducts electricity with the first conductive spring contact finger.

[0048] Furthermore, the inner cavity ring of the first conductive set is provided with a first contact finger mounting groove.

[0049] Furthermore, the first conductive spring contact finger is installed in the first contact finger installation groove, and the first conductive spring contact finger is partially exposed outside the first contact finger installation groove.

[0050] Furthermore, a second conductive spring contact finger is disposed in the inner cavity of the second conductive sleeve, and the second conductive portion contacts and conducts electricity with the second conductive spring contact finger.

[0051] Furthermore, the inner cavity ring of the second conductive set is provided with a second contact finger mounting groove.

[0052] Furthermore, the second conductive spring contact finger is installed in the second contact finger installation groove, and the second conductive spring contact finger is partially exposed outside the second contact finger installation groove.

[0053] Furthermore, the fuse is an ejection type fuse.

[0054] Furthermore, it also includes an elastic sealing kit; the upper end of the elastic sealing kit is sleeved on the injection end of the fuse, and the lower end of the elastic sealing kit is fastened to the inlet of the receiving chamber through a limiting sleeve cover.

[0055] Furthermore, the lower portion of the elastic sealing kit has a corrugated structure.

[0056] Furthermore, the corrugated structure includes a wave crest section and a wave trough section formed sequentially from the outside to the inside.

[0057] Furthermore, the middle portion of the limiting cover has an ejection through hole.

[0058] Furthermore, the elastic sealing kit is a silicone sealing kit.

[0059] Furthermore, the upper end of the elastic sealing kit has a thickened collar.

[0060] Furthermore, the ejection end of the fuse is provided with a socket recess for the thickened sleeve ring to be socketed.

[0061] Furthermore, the insulating shell is a silicone shell.

[0062] Furthermore, an outer wall of the insulating shell is provided with an umbrella skirt.

[0063] Furthermore, it also includes a connecting arm; one end of the connecting arm is fixed to the middle of the insulating shell through a locking clamp, and the other end is fixedly connected to the control terminal.

[0064] Furthermore, the locking clamp is arranged immediately below the current sensor.

[0065] Furthermore, it also includes a connecting arm; one end of the connecting arm is fixedly connected to the sensor clamp, and the other end is fixedly connected to the control terminal.

[0066] Furthermore, it also includes a mounting frame fixedly connected to the control terminal.

[0067] The advantages of the present invention are:

[0068] 1. A variety of sensors are set on the pole shell of the boundary protection device. During specific operation, the operation status of the distribution line can be monitored in real time through a variety of combined power sensors. If an insulation grounding short circuit fault occurs in the distribution line, the control terminal can quickly and reliably determine the fault type and remotely transmit data information in real time to quickly isolate the fault point, reduce the power outage area and reduce the adverse effects of large-scale power outages. At the same time, the control terminal can use its own communication function to transmit fault information to the power supply department in real time, which is convenient for the power supply department to quickly inspect and troubleshoot, quickly restore power supply, and reduce the adverse effects of long-term power outages.

[0069] 2. By covering the outside of the pole shell with an insulating shell, not only can the impact of harsh environment on the boundary protection device be reduced and the service life be extended; but also the insulation of the boundary protection device can be improved to ensure safe use.

[0070] 3. The current sensor, voltage sensor and power sensor are buried inside, which can provide good protection for the current sensor, voltage sensor and power sensor, avoid adverse effects of harsh environment on the current sensor, voltage sensor and power sensor, increase service life and ensure safe use; at the same time, it can also make the structure of the entire boundary protection device more compact and reduce space occupancy.

[0071] 4. Use power supply sensors to directly draw power from the boundary protection device for use in the control terminal. Compared with the external power supply PT method, it is safer, more convenient to draw power, and has a simpler structure. At the same time, the power supply sensor can store energy and can well meet the power supply needs of the control terminal.

[0072] 5. The current sensor, voltage sensor, power sensor, first conductive kit, second conductive kit, incoming cable, outgoing cable and pole shell are cast into one piece through the casting process, which simplifies the assembly process, improves production efficiency and has good firmness; the cast pole shell has good insulation, can improve the insulation withstand voltage level, and ensure the safe use of high-voltage power distribution; it can ensure sealing, avoid the influence of external harsh environment on current sensor, voltage sensor, power sensor, first conductive kit, second conductive kit, etc., and improve service life; it can facilitate current sensor and voltage sensor to collect electric energy signals and power sensor to draw power, which is more stable and reliable to use; it can ensure the overall structure is compact and beautiful, and reduce space occupancy.

[0073] 6. A first conductive spring contact finger is arranged in the inner cavity of the first conductive kit, and a second conductive spring contact finger is arranged in the inner cavity of the second conductive kit, which has the following beneficial effects: simple structure, small size, less material and low cost; strong current can be transmitted in a small space, meeting the design requirement of small space size, suitable for compact design, conducive to simplifying the design of devices, and suitable for use in a variety of static or dynamic medium and high voltage environments; multi-point contact, high concentration force, can achieve almost lossless contact, good conductivity, suitable for various electrical contact designs, and use the largest contact point as the best current carrying capacity for electrical or EMI shielding; at the same time, its operating temperature is relatively low and its service life is longer; the contact pressure of each contact point is not high and has good wear resistance; the unique structure gives it a wide working range; each coil will independently compensate for contact and surface changes, allowing it to allow a larger tolerance on the contact surface; it has greater adaptability to processing errors and assembly errors, and is more suitable for large-scale production.

[0074] 7. An elastic sealing kit is provided at the entrance of the receiving chamber to ensure that the fuse will not fall out of the receiving chamber after it is melted, thereby ensuring safety; at the same time, the elastic sealing kit can buffer the ejection of the fuse, thereby preventing the ejection force from being too large and damaging the device structure.

Brief Description of the Drawings

[0075] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0076] Figure 1 This is one of the overall structural schematic diagrams of an intelligent boundary protection device of the present invention (the fuse is in the ejection state);

[0077] Figure 2 This is the second schematic diagram of the overall structure of an intelligent boundary protection device of the present invention (the fuse is in an un-ejected state);

[0078] Figure 3 It is a schematic diagram of the overall structure of the pole shell in the present invention;

[0079] Figure 4 It is one of the structural schematic diagrams of the first conductive set in the present invention (with the first conductive spring contact finger installed);

[0080] Figure 5 This is the second structural schematic diagram of the first conductive set in the present invention (the first conductive spring contact finger is not installed);

[0081] Figure 6 It is one of the structural schematic diagrams of the second conductive set in the present invention (with a second conductive spring contact finger installed);

[0082] Figure 7 This is the second structural schematic diagram of the second conductive set in the present invention (the second conductive spring contact finger is not installed);

[0083] Figure 8 It is a schematic structural diagram of the elastic sealing kit in the present invention;

[0084] Fig. 9 It is a structural schematic diagram of the limiting cover in the present invention;

[0085] Fig.10 It is a structural schematic diagram of the fuse in the present invention;

[0086] Fig.11 This is the third overall structural diagram of an intelligent boundary protection device of the present invention (the fuse is in the ejection state);

[0087] Fig.12 This is the fourth overall structural diagram of an intelligent boundary protection device of the present invention (the fuse is in an un-ejected state);

[0088] Fig.13 is a top view of the sensor clamp of the present invention;

[0089] Fig.14 It is a front view of the sensor clamp in the present invention;

[0090] Fig.15 is a front view of the second hoop member in the present invention;

[0091] Fig.16 is a front view of the first hoop member in the present invention;

[0092] Fig.17 is a schematic diagram of the contact end surface of the second clamping member in the present invention;

[0093] Fig.18 is a schematic diagram of the contact end surface of the first clamping member in the present invention;

[0094] Fig.19 is a top view of the first hoop member in the present invention;

[0095] Fig. 20 It is a top view of the second clamp member in the present invention.

[0096] Description of reference numerals:

[0097] 1-pole housing, 11-receiving chamber, 111-entrance, 12-hoop blocking convex portion, 1a-current sensor, 11a-first connecting terminal, 12a-first current sensing section, 121a-first contact end surface, 122a-second contact end surface, 13a-second current sensing section, 131a-third contact end surface, 132a-fourth contact end surface, 1b-voltage sensor, 11b-second connecting terminal, 12b-third connecting terminal, 1c-power sensor Device, 11c-fourth connecting terminal, 12c-fifth connecting terminal, 2-first conductive kit, 21-incoming cable insertion port, 22-first conductive spring contact finger, 23-first contact finger mounting groove, 3-second conductive kit, 31-through hole, 32-outgoing cable insertion port, 33-second conductive spring contact finger, 34-second contact finger mounting groove, 4-fuse, 41-first conductive part, 42-second conductive part, 43-sleeve concave part, 44-first cylindrical section, 5-control Terminal, 6-insulating shell, 61-umbrella skirt, 71-incoming cable, 72-outgoing cable, 8-elastic sealing kit, 81-corrugated structure, 811-peak section, 812-trough section, 82-thickened collar, 83-upper end opening, 84-lower end opening, 8a-limiting cover, 81a-ejection through hole, 82a-base plate, 83a-second cylindrical section, 9-sensor clamp, 91-first clamp, 911-first fitting surface, 912-second fitting surface, 913 -First connecting piece, 914-first locking hole, 915-connecting protrusion, 916-first axial hole, 92-second clamping member, 921-third fitting surface, 922-fourth fitting surface, 923-second connecting piece, 924-second locking hole, 925-connecting recess, 926-second axial hole, 93-locking member, 931-bolt, 932-nut, 94-rotating member, 941-connecting shaft, 101-connecting arm, 102-locking clamp, 103-mounting frame. [Specific implementation method]

[0098] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Specific embodiment 1

[0100] See also Figures 1 to 10 As shown, a preferred embodiment of an intelligent boundary protection device of the present invention includes a pole housing 1 with a receiving chamber 11, a sensor (not shown) arranged on the pole housing 1, a first conductive set 2 arranged at the upper part of the receiving chamber 11, a second conductive set 3 arranged at the lower part of the receiving chamber 11, a fuse 4 installed in the receiving chamber 11 and a control terminal 5 connected to the sensor; the upper end of the fuse 4 has a first conductive part 41 that contacts and conducts with the first conductive set 2 and a second conductive part 42 that contacts and conducts with the second conductive set 3 to achieve conduction of the fuse 4.

[0101] The present invention adopts the method of setting sensors on the pole shell 1 of the boundary protection device. Specifically, multiple sensors can be set, so that in specific operation, the operation status of the distribution line can be monitored in real time through multiple combinations of power sensors. If an insulation grounding short circuit fault occurs in the distribution line, the control terminal 5 can quickly and reliably determine the fault type and remotely transmit data information in real time to quickly isolate the fault point, reduce the power outage area and reduce the adverse effects of large-scale power outages; at the same time, the control terminal 5 can use its own communication function to transmit fault information to the power supply department in real time, which is convenient for the power supply department to quickly inspect and troubleshoot, quickly restore power supply, and reduce the adverse effects of long-term power outages.

[0102] In this embodiment, the boundary protection device also includes an insulating shell 6 coated on the outside of the pole shell 1. Since the boundary protection device is installed on the distribution branch line and needs to be exposed to a harsh environment for a long time, by coating the outside of the pole shell 1 with a layer of insulating shell 6, not only can the impact of the harsh environment on the boundary protection device be reduced and the service life be increased; but also the insulation of the boundary protection device can be improved to ensure safe use.

[0103] In this embodiment, the sensor includes a current sensor 1a. When working, the current sensor 1a collects current signals in real time and transmits them to the control terminal 5, so that the control terminal 5 can perform fault analysis according to the received current signals.

[0104] As a best implementation, the current sensor 1a is a through-type current transformer.

[0105] In this embodiment, the current sensor 1a is buried in the middle of the pole housing 1 to realize real-time collection and transmission of the current signal flowing through the fuse 4. By burying the current sensor 1a in the pole housing 1, the current sensor 1a can be protected, and the adverse effects of the harsh environment on the current sensor 1a can be avoided, the service life can be increased, and the safety of use can be ensured; at the same time, the structure of the entire boundary protection device can be made more compact and the space occupation can be reduced.

[0106] In this embodiment, the current sensor 1 a has a first connection terminal 11 a extending to the outside of the insulating housing 6 to facilitate wiring operations during use.

[0107] In this embodiment, the sensor also includes a voltage sensor 1b. When working, the voltage sensor 1b collects voltage signals in real time and transmits them to the control terminal 5, so that the control terminal 5 can perform fault analysis based on the received voltage signals. The combination of the current sensor 1a and the voltage sensor 1b can provide better protection for the analysis of the control terminal 5, ensuring that the control terminal 5 can quickly and accurately confirm the fault.

[0108] As a best implementation, the voltage sensor 1b is a capacitive voltage divider sensor or a resistive-capacitive voltage divider sensor, which can convert high voltage electricity into a low voltage signal.

[0109] In this embodiment, the voltage sensor 1b is buried in the lower part of the pole housing 1, so as to collect and transmit the voltage signal output by the fuse 4 in real time. By burying the voltage sensor 1b in the pole housing 1, the voltage sensor 1b can be protected, and the adverse effects of the harsh environment on the voltage sensor 1b can be avoided, the service life can be increased, and the safety of use can be ensured; at the same time, the structure of the entire boundary protection device can be made more compact and the space occupation can be reduced.

[0110] In this embodiment, one end of the voltage sensor 1b has a second connection terminal 11b connected to the second conductive set 3 to realize the collection of voltage signals; the other end has a third connection terminal 12b extending to the outside of the insulating shell 6 to facilitate connection with the control terminal 5 to realize the transmission of the collected voltage signal to the control terminal 5.

[0111] In this embodiment, the sensor further includes a power sensor 1c. When working, the power sensor 1c takes power from the boundary protection device and provides it to the control terminal 5, so as to meet the power supply demand of the control terminal 5.

[0112] As an optimal implementation, the power sensor 1c is a capacitive voltage divider sensor or a resistive-capacitive voltage divider sensor, which can convert high voltage electricity into low voltage electricity to meet the power supply conditions of the control terminal 5. In specific implementation, the power sensor 1c can use a large-capacity capacitor to store more electricity and provide guarantee for the power supply of the control terminal 5.

[0113] In this embodiment, the power sensor 1c is buried in the lower part of the pole housing 1, so as to draw power from the output end of the fuse 4. By burying the power sensor 1c in the pole housing 1, the power sensor 1c can be protected, and the adverse effects of the harsh environment on the power sensor 1c can be avoided, the service life can be increased, and the safety of use can be ensured; at the same time, the structure of the entire boundary protection device can be made more compact and the space occupation can be reduced.

[0114] In this embodiment, the voltage sensor 1b and the power sensor 1c are buried on the same side of the pole housing 1. In the specific implementation, the voltage sensor 1b and the power sensor 1c are cast inside the pole housing 1 by casting engineering plastics. By arranging the voltage sensor 1b and the power sensor 1c in parallel on the same side of the pole housing 1, the actual casting work can be facilitated.

[0115] In this embodiment, one end of the power supply sensor 1c has a fourth connection terminal 11c connected to the second conductive set 3, so as to draw power from the output end of the fuse 4; the other end has a fifth connection terminal 12c extending to the outside of the insulating shell 6 to facilitate connection with the control terminal 5, so as to provide the stored electrical energy to the control terminal 5 for use.

[0116] In this embodiment, the boundary protection device also includes an incoming cable 71 connected to the first conductive set 2 and extending to the outside of the insulating shell 6, so as to input high voltage electricity into the boundary protection device to achieve the purpose of boundary protection.

[0117] In this embodiment, the boundary protection device also includes an outgoing cable 72 connected to the second conductive set 3 and extending to the outside of the insulating shell 6, so as to connect the high voltage electricity to the user side and meet the power supply demand of the user side.

[0118] In this embodiment, the pole housing 1 is a housing formed by casting engineering plastics. By casting the pole housing 1 with engineering plastics, it can be ensured that the pole housing 1 has good insulation and is safe to use.

[0119] As a best implementation method, in order to achieve better insulation effect and ensure reliability, the pole housing 1 is a housing formed by casting epoxy resin material or composite nylon material.

[0120] In this embodiment, the current sensor 1a, the voltage sensor 1b, the power sensor 1c, the first conductive set 2, the second conductive set 3, the incoming cable 71, the outgoing cable 72 and the pole shell 1 are cast into one piece. In the specific implementation, it is only necessary to place the current sensor 1a, the voltage sensor 1b, the power sensor 1c, the first conductive set 2, the second conductive set 3, the incoming cable 71 and the outgoing cable 72 in the mold, and then cast the pole shell 1 through a casting process, so that the pole shell 1 combines and fixes the current sensor 1a, the voltage sensor 1b, the power sensor 1c, the first conductive set 2, the second conductive set 3, the incoming cable 71 and the outgoing cable 72 together. For example, when epoxy resin material is used, it can be cast by the APG casting process, which is mainly used in the production of medium and high voltage epoxy insulation products.

[0121] The present invention adopts the method of casting the current sensor 1a, the voltage sensor 1b, the power sensor 1c, the first conductive kit 2, the second conductive kit 3, the incoming cable 71, the outgoing cable 72 and the pole shell 1 into one body, which has the following beneficial effects: 1. The pole shell 1 is cast as a whole through the casting process, which simplifies the assembly process, improves the production efficiency, and has good firmness; at the same time, the cast pole shell 1 has good insulation, which can improve the insulation withstand voltage level and ensure the safe use of high-voltage power distribution; 2. The sealing can be guaranteed to avoid the external harsh environment from affecting the current sensor 1a, the voltage sensor 1b, the power sensor 1c, the first conductive kit 2, the second conductive kit 3, etc., and improve the service life; 3. It can facilitate the current sensor 1a and the voltage sensor 1b to collect electric energy signals and the power sensor 1c to draw electricity, which is more stable and reliable to use; 4. The overall structure can be guaranteed to be compact and beautiful, and the space occupation can be reduced.

[0122] In this embodiment, the inlet 111 of the receiving chamber 11 is located at the bottom of the pole housing 1 to facilitate installation and use.

[0123] In this embodiment, in order to facilitate installation and conductive connection of the fuse 4 , a through hole 31 for the fuse 4 to pass through is formed in the middle of the second conductive sleeve 3 .

[0124] In this embodiment, in order to facilitate the conductive connection between the outgoing cable 72 and the second conductive set 3, the outer side wall of the second conductive set 3 has an outgoing cable insertion port 32. Before pouring the pole housing 1, the inner core of the outgoing cable 72 needs to be inserted into the outgoing cable insertion port 32 before pouring, so as to ensure that the outgoing cable 72 is firmly combined with the second conductive set 3; at the same time, the outer insulating sleeve of the outgoing cable 72 can be combined with the insulating shell 6 to ensure the insulation effect.

[0125] In this embodiment, in order to facilitate the conductive connection between the incoming cable 71 and the first conductive set 2, the upper end of the first conductive set 2 has an incoming cable insertion port 21. Before pouring the pole housing 1, the inner core of the incoming cable 71 needs to be inserted into the incoming cable insertion port 21 before pouring, so as to ensure that the incoming cable 71 is firmly combined with the first conductive set 2; at the same time, the outer insulating sleeve of the incoming cable 71 can be combined with the insulating shell 6 to ensure the insulation effect.

[0126] In this embodiment, a first conductive spring contact finger 22 is disposed in the inner cavity of the first conductive sleeve 2 , and the first conductive portion 41 contacts and conducts electricity with the first conductive spring contact finger 22 .

[0127] In this embodiment, in order to facilitate the installation of the first conductive spring contact finger 22 , the inner ring of the first conductive sleeve 2 is provided with a first contact finger installation groove 23 .

[0128] In this embodiment, the first conductive spring contact finger 22 is installed in the first contact finger installation groove 23, and the first conductive spring contact finger 22 is partially exposed outside the first contact finger installation groove 23 to ensure that the first conductive portion 41 and the first conductive spring contact finger 22 can achieve contact and conduction.

[0129] In this embodiment, the inner cavity of the second conductive sleeve 3 is provided with a second conductive spring contact finger 33 , and the second conductive portion 42 contacts and conducts electricity with the second conductive spring contact finger 33 .

[0130] In this embodiment, in order to facilitate the installation of the second conductive spring contact finger 33 , the inner ring of the second conductive sleeve 3 is provided with a second contact finger installation groove 34 .

[0131] In this embodiment, the second conductive spring contact finger 33 is installed in the second contact finger installation groove 34 , and the second conductive spring contact finger 33 is partially exposed outside the second contact finger installation groove 34 to ensure that the second conductive portion 42 and the second conductive spring contact finger 33 can achieve contact and conduction.

[0132] The present invention arranges a first conductive spring contact finger 22 in the inner cavity of the first conductive set 2, and arranges a second conductive spring contact finger 33 in the inner cavity of the second conductive set 3, so that the following beneficial effects can be brought about in specific use: 1. Simple structure, small size, less material and low cost; strong current can be transmitted in a small space, which not only meets the design requirement of small space size, is suitable for compact design, is conducive to simplifying the design of devices, and is suitable for use in a variety of static or dynamic medium and high voltage environments; 2. Multi-point contact, high concentration force, can achieve almost lossless contact, good conductivity, and is suitable for various electrical contact designs; at the same time, its operating temperature is relatively low and its service life is longer; 3. The contact pressure of each contact point is not high and has good wear resistance; 4. The unique structure gives it a wide working range; each coil will independently compensate for contact and surface changes, so that it allows a larger tolerance on the contact surface; it has greater adaptability to processing errors and assembly errors, and is more suitable for large-scale production.

[0133] As a best implementation method, in order to better play a protective role, the fuse 4 is an ejection type fuse.

[0134] In this embodiment, the boundary protection device also includes an elastic sealing kit 8; the upper end of the elastic sealing kit 8 is sleeved on the injection end of the fuse 4, and the lower end of the elastic sealing kit 8 is fastened to the inlet 111 of the receiving chamber 11 through a limiting cover 8a. By arranging the elastic sealing kit 8 at the inlet 111 of the receiving chamber 11, it is ensured that the fuse 4 will not fall out of the receiving chamber 11 after melting, thereby ensuring safety; at the same time, the elastic sealing kit 8 can buffer the ejection of the fuse 4, thereby preventing the ejection force from being too large and damaging the device structure. In addition, the entire inlet 111 is blocked by the elastic sealing kit 8, which can not only prevent the internal devices from being affected by the harsh external environment, but also achieve the effect of sealing and insulation.

[0135] In this embodiment, the lower part of the elastic sealing kit 8 has a corrugated structure 81. Through the design of the corrugated structure 81, the flexibility of the elastic sealing kit 8 in the up and down movement can be improved and the deformation resistance can be reduced.

[0136] In this embodiment, the corrugated structure 81 includes a crest section 811 and a trough section 812 formed sequentially from the outside to the inside. The double corrugation design of the crest section 811 and the trough section 812 can better achieve a buffering effect, reduce deformation resistance, and reduce the production cost of the elastic sealing kit 8.

[0137] In this embodiment, the middle of the limiting sleeve cover 8a has an ejection through hole 81a, so that it can be extended when the fuse 4 melts and ejects, and play a buffering role with the elasticity of the elastic sealing sleeve 8.

[0138] In this embodiment, the elastic sealing kit 8 is a silicone sealing kit. By using the silicone sealing kit, a good sealing and insulating effect can be achieved; at the same time, the silicone seal has good elasticity and is easy to connect and use.

[0139] In this embodiment, the upper end of the elastic sealing kit 8 has a thickened collar 82 to better sleeve the elastic sealing kit 8 onto the fuse 4 .

[0140] In this embodiment, the ejection end of the fuse 4 is provided with a socket recess 43 for the thickened ring 82 to socket. The thickened ring 82 cooperates with the socket recess 43 to improve the firmness of the connection, ensuring that the elastic sealing kit 8 will not be separated from the fuse 4 when the fuse 4 is ejected; at the same time, the sealing and insulation effects are improved.

[0141] In this embodiment, in order to facilitate the actual sleeve connection, the elastic sealing kit 8 has an upper end opening 83, and the thickened collar 82 is arranged on the upper end opening 83. In order to ensure that the elastic sealing kit 8 and the fuse 4 are more firmly sleeved, the fuse 4 is provided with a first cylindrical section 44, the sleeve connection recess 43 is arranged on the first cylindrical section 44, the upper end opening 83 is a circular opening, and the outer diameter of the first cylindrical section 44 is greater than the inner diameter of the upper end opening 83.

[0142] In this embodiment, in order to better fasten the lower end of the elastic sealing kit 8 to the inlet 111, the elastic sealing kit 8 has a lower end opening 84, the inlet 111 is a circular cavity, the lower end opening 84 is a circular opening, and the outer diameter of the lower end opening 84 is equal to the inner diameter of the inlet 111; at the same time, the limiting cover 8a includes a base plate 82a attached to the lower surface of the pole housing 1 during plugging and a second cylindrical section 83a inserted into the lower end opening 84; the outer diameter of the second cylindrical section 83a is larger than the inner diameter of the lower end opening 84 and smaller than the inner diameter of the inlet 111. Through the mutual cooperation of the second cylindrical section 83a, the lower end opening 84, and the inlet 111, the lower end of the elastic sealing kit 8 can be well fastened to the inlet 111.

[0143] When the elastic sealing kit 8 in the present invention is used specifically, when the fuse 4 needs to be replaced, an external force can be applied to break through the holding force of the elastic sealing kit 8 and pull the fuse 4 downward, forcing the fuse 4 to escape from the receiving chamber 11 and separate from the elastic sealing kit 8; a new fuse 4 can also be inserted into the receiving chamber 11 by applying an external force, and the thickened ring 82 of the elastic sealing kit 8 is inserted into the socket recess 43 of the fuse 4.

[0144] In this embodiment, the insulating shell 6 is a silicone shell. In specific implementation, after the pole shell 1 is cast, silicone can be cast on the outer surface of the pole shell 1 to form the insulating shell 6. The silicone shell can well resist the harsh external environment and improve the insulation effect.

[0145] In this embodiment, in order to further improve the insulation effect, an outer wall of the insulating shell 6 is provided with an umbrella skirt 61 .

[0146] In this embodiment, in order to fix the control terminal 5, the boundary protection device also includes a connecting arm 101; one end of the connecting arm 101 is fixed to the middle of the insulating shell 6 through a locking clamp 102, and the other end is fixed to the control terminal 5.

[0147] In this embodiment, the locking clamp 102 is arranged immediately below the current sensor 1a. Since the current sensor 1a is buried in the middle of the pole housing 1, a clamp blocking convex portion 12 can be formed in the middle of the pole housing 1, so that the entire pole housing 1 structure can be supported by combining the clamp blocking convex portion 12 and the locking clamp 102.

[0148] In this embodiment, in order to facilitate the hanging installation of the boundary protection device, the boundary protection device also includes a mounting frame 103 fixedly connected to the control terminal 5. Specific embodiment 2

[0150] See also Figures 3 to 20 As shown, the present invention is an intelligent boundary protection device. The difference from the specific embodiment 1 is that the current sensor 1a in the specific embodiment 2 is externally mounted instead of being embedded in the pole housing 1. The other contents are the same as the specific embodiment 1 and will not be described again here. By adopting the external method, on the one hand, the structural complexity of the pole housing 1 can be reduced, and the difficulty of casting the pole housing 1 can be facilitated; on the other hand, the external method can be easily installed and used when needed, and can be left uninstalled when not needed, and can also facilitate the replacement of the current sensor 1a.

[0151] In this embodiment, the current sensor 1 a is fixed to the middle of the outer wall of the insulating housing 6 through a sensor clamp 9 to achieve real-time collection and transmission of the current signal flowing through the fuse 4 .

[0152] In this embodiment, the pole housing 1 and the insulating shell 6 have a clamp blocking protrusion 12 in the middle, and the sensor clamp 9 is arranged immediately below the clamp blocking protrusion 12, so that the structure of the entire pole housing 1 is supported by the combination of the clamp blocking protrusion 12 and the sensor clamp 9.

[0153] In this embodiment, the current sensor 1a is fixed inside the sensor clamp 9. By fixing the current sensor 1a inside the sensor clamp 9, the sensor clamp 9 can be used to protect the current sensor 1a, avoid adverse effects of harsh environments on the current sensor 1a, increase service life, and ensure safe use; at the same time, the current sensor 1a is arranged inside the sensor clamp 9, which will make the structure of the entire boundary protection device more compact and reduce space occupation. In specific implementation, the current sensor 1a can be cast inside the sensor clamp 9 by casting engineering materials, so that the current sensor 1a and the sensor clamp 9 are better combined, and the protection of the current sensor 1a is improved; when replacement is needed, the entire sensor clamp 9 can be replaced.

[0154] In this embodiment, the current sensor 1a has a first connection terminal 11a extending to the outside of the sensor clamp to facilitate wiring during use.

[0155] In this embodiment, the sensor clamp 9 includes a first clamp member 91 and a second clamp member 92 ; the first clamp member 91 and the second clamp member 92 are detachably connected to facilitate installation or removal of the sensor clamp 9 .

[0156] In this embodiment, the current sensor 1a includes a first current sensing segment 12a buried in the first clamp member 91 and a second current sensing segment 13a buried in the second clamp member 92, so as to facilitate installation or removal with the sensor clamp 9.

[0157] In this embodiment, one end of the first clamping member 91 has a first fitting surface 911 , and the other end has a second fitting surface 912 , so as to facilitate contact and conduction between the first current sensing segment 12 a and the second current sensing segment 13 a .

[0158] In this embodiment, in order to ensure better contact between the first current sensing segment 12a and the second current sensing segment 13a, one end of the first current sensing segment 12a has a first contact end surface 121a flush with the first fitting surface 911, and the other end has a second contact end surface 122a flush with the second fitting surface 912.

[0159] In this embodiment, one end of the second clamp member 92 has a third fitting surface 921 for fitting with the first fitting surface 911, and the other end has a fourth fitting surface 922 for fitting with the second fitting surface 912, so as to ensure that after installation, the two ends of the first clamp member 91 and the second clamp member 92 can fit together.

[0160] In this embodiment, one end of the second current sensing segment 13a has a third contact end surface 131a flush with the third fitting surface 921 and in contact with the first contact end surface 121a, and the other end has a fourth contact end surface 132a flush with the fourth fitting surface 922 and in contact with the second contact end surface 122a. In this way, after the sensor clamp 9 is installed, the first current sensing segment 12a and the second current sensing segment 13a can be well contacted and connected, thereby realizing stable collection of current signals.

[0161] In this embodiment, one end of the first hoop member 91 and the second hoop member 92 are locked and connected by a locking member 93 to achieve the disassembly function.

[0162] In this embodiment, in order to facilitate the locking connection, a first connecting piece 913 is provided at one end of the first clamping member 91 , and a first locking hole 914 is opened on the first connecting piece 913 .

[0163] In this embodiment, in order to facilitate the locking connection, a second connecting piece 923 is provided at one end of the second clamping member 92, and a second locking hole 924 is opened on the second connecting piece 923 at a position corresponding to the first locking hole 914.

[0164] In this embodiment, the locking member 93 includes a bolt 931 passing through the first locking hole 914 and the second locking hole 924 and a nut 932 arranged on the bolt 931, so as to lock one end of the first clamping member 91 and the second clamping member 92 together.

[0165] In this embodiment, the other ends of the first hoop member 91 and the second hoop member 92 are rotatably connected via a rotating member 94. By using the rotating member 94 to connect the other ends of the first hoop member 91 and the second hoop member 92, installation can be more convenient.

[0166] In this embodiment, in order to achieve rotational connection, a connecting protrusion 915 is provided at the other end of the first clamping member 91 , and a first axial hole 916 is formed on the connecting protrusion 915 .

[0167] In this embodiment, in order to achieve rotational connection, a connecting recess 925 is provided at the other end of the second clamping member 92 , and a second axial hole 926 is opened on the connecting recess 925 at a position corresponding to the first axial hole 916 .

[0168] In this embodiment, the rotating member 94 includes a connecting shaft 941 passing through the first shaft hole 916 and the second shaft hole 926 .

[0169] In this embodiment, the voltage sensor 1b, the power sensor 1c, the first conductive set 2, the second conductive set 3, the incoming cable 71, the outgoing cable 72 and the pole shell 1 are cast into one piece. In the specific implementation, it is only necessary to place the voltage sensor 1b, the power sensor 1c, the first conductive set 2, the second conductive set 3, the incoming cable 71 and the outgoing cable 72 in the mold, and then cast the pole shell 1 through a casting process, so that the pole shell 1 combines and fixes the voltage sensor 1b, the power sensor 1c, the first conductive set 2, the second conductive set 3, the incoming cable 71 and the outgoing cable 72 together. For example, when epoxy resin material is used, it can be cast by the APG casting process, which is mainly used in the production of medium and high voltage epoxy insulation products.

[0170] The present invention adopts the method of casting the voltage sensor 1b, the power taking sensor 1c, the first conductive kit 2, the second conductive kit 3, the incoming cable 71, the outgoing cable 72 and the pole shell 1 into one body, which has the following beneficial effects: 1. The pole shell 1 is cast as a whole through the casting process, which simplifies the assembly process, improves the production efficiency, and has good firmness; at the same time, the cast pole shell 1 has good insulation, which can improve the insulation withstand voltage level and ensure the safe use of high-voltage power distribution; 2. It can ensure the sealing performance, avoid the external harsh environment from affecting the voltage sensor 1b, the power taking sensor 1c, the first conductive kit 2, the second conductive kit 3, etc., and improve the service life; 3. It can facilitate the voltage sensor 1b to collect electric energy signals and the power taking sensor 1c to take power, which is more stable and reliable to use; 4. It can ensure that the overall structure is compact and beautiful, and reduces space occupancy.

[0171] In this embodiment, in order to fix the control terminal 5, the boundary protection device further includes a connecting arm 101; one end of the connecting arm 101 is fixedly connected to the sensor clamp 9, and the other end is fixedly connected to the control terminal 5. In specific implementation, the first connecting terminal 11a can also be arranged inside the connecting arm 101 to protect the first connecting terminal 11a.

[0172] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An intelligent boundary protection device, characterized in that: The invention comprises a pole shell with a receiving chamber, a sensor arranged on the pole shell, a first conductive sleeve arranged at the upper part of the receiving chamber, a second conductive sleeve arranged at the lower part of the receiving chamber, a fuse installed in the receiving chamber and a control terminal connected to the sensor; the upper end of the fuse has a first conductive part that contacts and conducts with the first conductive sleeve and a second conductive part that contacts and conducts with the second conductive sleeve; The fuse is an ejection type fuse; it also includes an elastic sealing kit, the upper end of which is sleeved on the ejection end of the fuse, and the lower end of which is fastened to the inlet of the receiving chamber through a limiting sleeve cover; the lower part of the elastic sealing kit has a corrugated structure, and the corrugated structure includes a crest section and a trough section formed sequentially from the outside to the inside, and the middle part of the limiting sleeve cover has an ejection through hole; The protection device also includes an insulating shell covering the outside of the pole shell, an incoming cable connected to the first conductive kit and extending to the outside of the insulating shell, and an outgoing cable connected to the second conductive kit and extending to the outside of the insulating shell; the sensor includes a current sensor, a voltage sensor and a power supply sensor, the current sensor is buried in the middle of the pole shell, the voltage sensor is buried in the lower part of the pole shell, and the power supply sensor is buried in the lower part of the pole shell; the pole shell is a shell formed by casting engineering plastics, and the current sensor, voltage sensor, power supply sensor, first conductive kit, second conductive kit, incoming cable, outgoing cable and pole shell are cast into one body.

2. An intelligent boundary protection device as claimed in claim 1, characterized in that: The current sensor is a through-type current transformer.

3. An intelligent boundary protection device as claimed in claim 2, characterized in that: The current sensor has a first connection terminal extending to the outside of the insulating housing.

4. An intelligent boundary protection device as claimed in claim 2, characterized in that: The current sensor is fixed to the middle part of the outer wall of the insulating shell through a sensor clamp.

5. An intelligent boundary protection device as claimed in claim 4, characterized in that: The pole housing and the insulating shell are provided with a clamp blocking convex portion in the middle, and the sensor clamp is arranged immediately below the clamp blocking convex portion.

6. An intelligent boundary protection device as claimed in claim 4, characterized in that: The current sensor is fixed inside the sensor clamp.

7. An intelligent boundary protection device as claimed in claim 6, characterized in that: The current sensor has a first connection terminal extending to the outside of the sensor clamp.

8. An intelligent boundary protection device as claimed in claim 6, characterized in that: The sensor clamp comprises a first clamp component and a second clamp component; the first clamp component and the second clamp component are detachably connected.

9. An intelligent boundary protection device as claimed in claim 8, characterized in that: The current sensor includes a first current sensing section buried in the first clamp component and a second current sensing section buried in the second clamp component.

10. An intelligent boundary protection device as claimed in claim 9, characterized in that: One end of the first hoop member has a first fitting surface, and the other end has a second fitting surface.

11. An intelligent boundary protection device as claimed in claim 10, characterized in that: One end of the first current sensing section has a first contact end surface flush with the first fitting surface, and the other end has a second contact end surface flush with the second fitting surface.

12. An intelligent boundary protection device as claimed in claim 11, characterized in that: One end of the second hoop member has a third fitting surface for fitting with the first fitting surface, and the other end of the second hoop member has a fourth fitting surface for fitting with the second fitting surface.

13. An intelligent boundary protection device as claimed in claim 12, characterized in that: One end of the second current sensing section has a third contact end surface flush with the third fitting surface and in contact with the first contact end surface, and the other end has a fourth contact end surface flush with the fourth fitting surface and in contact with the second contact end surface.

14. An intelligent boundary protection device as claimed in claim 8, characterized in that: One end of the first hoop member and the second hoop member are locked and connected via a locking member.

15. An intelligent boundary protection device as claimed in claim 14, characterized in that: A first connecting piece is provided at one end of the first hoop member, and a first locking hole is provided on the first connecting piece.

16. An intelligent boundary protection device as claimed in claim 15, characterized in that: A second connecting piece is provided at one end of the second hoop member, and a second locking hole is provided on the second connecting piece at a position corresponding to the first locking hole.

17. An intelligent boundary protection device as claimed in claim 16, characterized in that: The locking component comprises a bolt passing through the first locking hole and the second locking hole and a nut arranged on the bolt.

18. An intelligent boundary protection device as claimed in claim 14, characterized in that: The other ends of the first hoop member and the second hoop member are rotatably connected via a rotating member.

19. An intelligent boundary protection device as claimed in claim 18, characterized in that: The other end of the first hoop member is provided with a connecting protrusion, and the connecting protrusion is provided with a first axial hole.

20. An intelligent boundary protection device as claimed in claim 19, characterized in that: A connecting recess is provided at the other end of the second hoop member, and a second axial hole is opened at a position of the connecting recess corresponding to the first axial hole.

21. An intelligent boundary protection device as claimed in claim 20, characterized in that: The rotating member includes a connecting shaft passing through the first shaft hole and the second shaft hole.

22. The intelligent boundary protection device according to claim 1, characterized in that: The voltage sensor is a capacitive voltage divider sensor or a resistive-capacitive voltage divider sensor.

23. The intelligent boundary protection device according to claim 1, characterized in that: One end of the voltage sensor has a second connection terminal connected to the second conductive sleeve, and the other end has a third connection terminal extending to the outside of the insulating housing.

24. The intelligent boundary protection device according to claim 1, characterized in that: The power extraction sensor is a capacitive voltage divider sensor or a resistive-capacitive voltage divider sensor.

25. The intelligent boundary protection device according to claim 1, characterized in that: The voltage sensor and the power extraction sensor are buried on the same side of the pole shell.

26. An intelligent boundary protection device as claimed in claim 1, characterized in that: One end of the power extraction sensor has a fourth connection terminal connected to the second conductive sleeve, and the other end has a fifth connection terminal extending to the outside of the insulating shell.

27. An intelligent boundary protection device as claimed in claim 1, characterized in that: The pole shell is a shell formed by casting epoxy resin material or composite nylon material.

28. An intelligent boundary protection device as claimed in claim 27, characterized in that: The voltage sensor, the power taking sensor, the first conductive kit, the second conductive kit, the incoming cable, the outgoing cable and the pole shell are cast into one piece.

29. The intelligent boundary protection device according to claim 1, characterized in that: The inlet of the receiving chamber is located at the bottom of the pole housing.

30. An intelligent boundary protection device as claimed in claim 29, characterized in that: A through hole for the fuse to pass through is formed in the middle of the second conductive sleeve.

31. An intelligent boundary protection device as claimed in claim 29, characterized in that: The outer side wall of the second conductive sleeve has an outlet cable insertion opening.

32. An intelligent boundary protection device as claimed in claim 29, characterized in that: The upper end of the first conductive set is provided with an incoming cable insertion port.

33. An intelligent boundary protection device as claimed in claim 29, characterized in that: A first conductive spring contact finger is disposed in the inner cavity of the first conductive sleeve, and the first conductive portion contacts and conducts electricity with the first conductive spring contact finger.

34. An intelligent boundary protection device as claimed in claim 33, characterized in that: The inner cavity ring of the first conductive set is provided with a first contact finger mounting groove.

35. An intelligent boundary protection device as claimed in claim 34, characterized in that: The first conductive spring contact finger is installed in the first contact finger installation groove, and the first conductive spring contact finger is partially exposed outside the first contact finger installation groove.

36. An intelligent boundary protection device as claimed in claim 29, characterized in that: A second conductive spring contact finger is disposed in the inner cavity of the second conductive sleeve, and the second conductive portion contacts and conducts electricity with the second conductive spring contact finger.

37. An intelligent boundary protection device as claimed in claim 36, characterized in that: The inner cavity ring of the second conductive set is provided with a second contact finger mounting groove.

38. An intelligent boundary protection device as claimed in claim 37, characterized in that: The second conductive spring contact finger is installed in the second contact finger installation groove, and the second conductive spring contact finger is partially exposed outside the second contact finger installation groove.

39. An intelligent boundary protection device as claimed in claim 1, characterized in that: The elastic sealing kit is a silicone sealing kit.

40. An intelligent boundary protection device as claimed in claim 1, characterized in that: The upper end of the elastic sealing set is provided with a thickened collar.

41. An intelligent boundary protection device as claimed in claim 40, characterized in that: The ejection end of the fuse is provided with a sleeve recess for the thickened sleeve ring to be sleeved.

42. An intelligent boundary protection device as claimed in claim 1, characterized in that: The insulating shell is a silicone shell.

43. An intelligent boundary protection device as claimed in claim 1, characterized in that: The outer wall of the insulating shell is surrounded by an umbrella skirt.

44. An intelligent boundary protection device as claimed in claim 1, characterized in that: It also includes a connecting arm; one end of the connecting arm is fixed to the middle of the insulating shell through a locking clamp, and the other end is fixedly connected to the control terminal.

45. An intelligent boundary protection device as claimed in claim 44, characterized in that: The locking clamp is arranged immediately below the current sensor.

46. ​​An intelligent boundary protection device according to any one of claims 4 to 21, characterized in that: It also includes a connecting arm; one end of the connecting arm is fixedly connected to the sensor clamp, and the other end is fixedly connected to the control terminal.

47. An intelligent boundary protection device as claimed in claim 1, characterized in that: It also includes a mounting frame fixedly connected to the control terminal.

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