Totally-enclosed integrated T-connection isolator

Abstract

The utility model provides a totally-enclosed integrated T-connection isolator, which is characterized in that a power supply side and a user side of an insulation support are both provided with insulation rapid crimping terminals for connecting lines, and the user side of the insulation support is also provided with an electricity testing grounding device; a disconnecting link is rotationally mounted on the insulating bracket, a power side moving contact and a user side moving contact are configured on the disconnecting link, and a closing and locking connecting device is arranged between the free end of the disconnecting link and the insulating bracket; the disconnecting link has a switching-on state and a switching-off state on the insulating support. The insulating support is integrated with the isolation disconnecting link and the electricity testing grounding device, the integrated structure is more compact, and installation is convenient. A worker can pull open the protective cover of the electricity testing and grounding device, hang a special grounding wire on the electricity testing and grounding rod and pull open the isolation disconnecting link through a special tool, an obvious isolation fracture is provided for a maintainer, branch circuit maintenance is carried out, the maintenance safety and convenience are improved, an exposed site does not need to be reserved, and the overall insulation performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric power equipment, specifically, relate to a full -enclosed integrated T interface isolator. BACKGROUND

[0002] The isolator has wide application, and the main purpose of the isolator is to ensure that the maintenance part in the electric power equipment is isolated from the live body, and the isolator is used for switching or pulling and closing the no-load circuit. With the updating of electric power equipment and the improvement of manufacturing process and operation level, a large number of maintenance-free electrical equipment are put into operation, so that the fault is greatly reduced, and the maintenance workload is also obviously reduced. However, the isolator in the prior art also has many defects.

[0003] The existing Chinese patent application document with the publication number CN211182067U discloses a full-enclosed isolator with opening and closing device, which comprises a base, a full-enclosed knife switch, an opening and closing device, a first insulating support and a second insulating support. The full-enclosed knife switch comprises a conductive row, a rubber insulation layer and a moving contact component. The moving contact component comprises a second moving contact. The insulation layer is wrapped outside the conductive row, and the second moving contact is connected with the conductive row. The opening and closing device comprises a lock catch, a hook, an opening ring, a support and a closing ring. The other end of the full-enclosed knife switch is rotatably connected to the outside of the upper part of the first insulating support through a pin joint structure. The hook and the opening ring are hinged on the support and engage with each other.

[0004] The full-enclosed isolator in the prior art has the following defects, which need to be improved:

[0005] 1. The branch circuit maintenance is inconvenient;

[0006] 2. The wiring is complicated, and the replacement and maintenance are inconvenient. INVENTION CONTENTS

[0007] In view of the defects in the prior art, the utility model aims at providing a full-enclosed integrated T interface isolator.

[0008] According to the full-enclosed integrated T interface isolator provided by the utility model, the power supply side static contact and the user side static contact are integrated on the insulating support, the insulating quick pressure contact terminal of the connecting line is arranged on the power supply side and the user side of the insulating support, and the electricity testing grounding device is further arranged on the user side of the insulating support.

[0009] The knife switch is rotatably installed on the insulating support, the power supply side moving contact and the user side moving contact are arranged on the knife switch, and the closing locking connecting device is arranged between the free end of the knife switch and the insulating support.

[0010] The knife switch comprises a closed state and an open state on the insulating support:

[0011] The closed state: the free end of the knife switch is connected with the insulating support, the power side movable contact is connected with the power side static contact, and the user side movable contact is connected with the user side static contact.

[0012] The open state: the free end of the knife switch is separated from the insulating support, the power side movable contact is disconnected with the power side static contact, and the user side movable contact is disconnected with the user side static contact.

[0013] Preferably, the electricity testing grounding device comprises an electricity testing grounding rod and an electricity testing grounding shield, the electricity testing grounding rod is integrated on the insulating support, and one end of the electricity testing grounding rod extends from the insulating support.

[0014] The electricity testing grounding shield is sleeved on the part of the electricity testing grounding rod extending from the insulating support, the electricity testing grounding shield can move along the axial direction of the electricity testing grounding rod, and a magnetic attraction type limiting device is arranged on the electricity testing grounding shield.

[0015] Preferably, the knife switch further comprises a conductive row, and the conductive row is connected with the power side movable contact and the user side movable contact.

[0016] The closed locking connecting device comprises a hook arranged on the movable end of the knife switch and a lock catch arranged on the insulating support, and the hook and the lock catch are connected through clamping.

[0017] Preferably, the movable end of the knife switch is further provided with a pull ring.

[0018] Preferably, the insulating quick pressure terminal comprises an insulating cover main shell and a cable sealing end cover.

[0019] The insulating cover main shell allows the cable of an external circuit to enter from the axial opening, the insulating cover main shell is provided with a fixing device for fixing the cable, and the cable sealing end cover is sealingly installed at the axial opening of the insulating cover main shell and allows the cable to pass through.

[0020] Preferably, a mounting groove is formed in the side surface of the insulating cover main shell, the fixing device is arranged in the mounting groove, and an insulating cover sealing cover is sealingly connected to the opening of the mounting groove.

[0021] Preferably, the cable sealing end cover is sealingly connected with the cable through a cable sealing rubber sleeve.

[0022] Preferably, a base is further provided, and the insulating support is fixedly connected with the base.

[0023] Compared with the prior art, the utility model has the beneficial effects that:

[0024] 1. The utility model discloses an integrated isolation switch and electricity testing grounding device on the insulating support, the integrated structure is more compact, and the convenience of installation is improved, when the branch circuit is overhauled or the branch circuit electric appliance is overhauled, the staff can pull apart the electricity testing grounding device protective cover through special tool, hang the special grounding wire on the electricity testing grounding rod, pull apart the isolation switch, provide the obvious isolation break for the overhaul personnel, so that the branch circuit is overhauled, help to improve the safety and convenience of overhaul.

[0025] 2. The utility model discloses the whole insulation processing is realized, all live body is embedded in the insulating material, has no any live bare point, helps to improve the insulating property of whole, realizes the totally enclosed protection. The live body in the atmosphere naked problem is solved, can be used in the heavy pollution area, effectively prevents the corrosion problem caused by the foreign matter lapping, short circuit ground and acid rain, salt fog etc. bad environment caused by ice and snow, rain, gale, birds and beasts. DRAWINGS

[0026] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of non-restrictive embodiments with reference to the accompanying drawings:

[0027] Figure 1 The utility model mainly embodies the whole structure schematic diagram of T joint isolator.

[0028] Reference signs:

[0029] Knife switch 10 Insulating cover sealing cover 32

[0030] Pull ring 11 Cable sealing end cover 33

[0031] Hook 12 High-voltage insulating cable 40

[0032] Movable contact 13 Cable sealing rubber sleeve 41

[0033] Movable contact 14 Closed lightning arrester 50

[0034] Rotary support 15 Disengager 51

[0035] Lock catch 16 Lightning arrester grounding insulating wire 52

[0036] Insulating support 20 Base 60

[0037] Static contact 21 Electricity testing grounding device 70

[0038] Static contact 22 Electricity testing grounding rod 71

[0039] Quick compression terminal 30 Electricity testing grounding protective cover 72

[0040] Insulating cover main casing 31 DETAILED DESCRIPTION

[0041] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0042] like Figure 1 As shown, a fully enclosed integrated T-junction isolator according to this utility model includes an insulating bracket 20. The insulating bracket 20 integrates a power-side stationary contact 22 and a user-side stationary contact 21. Both the power-side and user-side of the insulating bracket 20 are equipped with insulated quick-connect crimp terminals 30 for connecting lines. The user-side of the insulating bracket 20 is also equipped with a voltage detection grounding device 70, and the power-side of the insulating bracket 20 is also equipped with an enclosed surge arrester 50. A knife switch 10 is rotatably mounted on the insulating bracket 20. The knife switch 10 is equipped with a power-side moving contact 13 and a user-side moving contact 14. A closing interlocking connection device is provided between the free end of the knife switch 10 and the insulating bracket 20.

[0043] The disconnector 10 has two states on the insulating support 20: Closed state: The free end of the disconnector 10 is connected to the insulating support 20, the power supply side moving contact 13 is connected to the power supply side stationary contact 22, and the user side moving contact 14 is connected to the user side stationary contact 21. Open state: The free end of the disconnector 10 is separated from the insulating support 20, the power supply side moving contact 13 is disconnected from the power supply side stationary contact 22, and the user side moving contact 14 is disconnected from the user side stationary contact 21.

[0044] The technical solution of this application integrates a knife switch 10, a quick-connect terminal 30, a power supply side stationary contact 22, a user side stationary contact 21, and a voltage detection and grounding device 70 on the insulating bracket 20. It can realize the closing and opening operations, and can detect the user side branch circuit through the voltage detection and grounding device 70. There is no need to reserve access points on the insulating bracket 20. The overall insulation performance is high and the wiring is simple.

[0045] Specifically, the disconnect switch 10 also includes a conductive busbar that connects the power supply side moving contact 13 and the user side moving contact 14. The end of the disconnect switch 10 closest to the user side is hinged to the insulating support 20. In one feasible embodiment, the insulating support 20 is provided with a rotating support 15, and the end of the disconnect switch 10 is mounted on the rotating support 15 via a shaft and bearings. The closing interlocking connection device includes a hook 12 located at the movable end of the disconnect switch 10 and a latch 16 located on the insulating support 20, the hook 12 and the latch 16 being snapped together. To facilitate operation by personnel using specialized tools for closing or opening the switch, a pull ring 11 is also provided at the movable end of the disconnect switch 10.

[0046] More specifically, the electric detection grounding device 70 comprises an electric detection grounding rod 71 and an electric detection grounding shield, the electric detection grounding rod 71 is integrated on the insulating support 20, and one end of the electric detection grounding rod 71 extends out of the insulating support 20. The electric detection grounding shield is sleeved on the part of the electric detection grounding rod 71 extending out of the insulating support 20, and the electric detection grounding shield can move along the axial direction of the electric detection grounding rod 71, and a magnetic type limiting device is arranged on the electric detection grounding shield.

[0047] When the user side branch line or branch line electrical appliance is overhauled, in order to ensure the safety of the overhaul personnel and provide obvious isolation break, the disconnection operation is needed. First, the ground operator uses a special tool to pull open the electric detection grounding shield, hangs a special grounding wire on the electric detection grounding rod 71, and then uses a special tool to pull the knife switch 10 to realize the disconnection operation. Further, in order to facilitate the special tool to pull open the electric detection grounding shield, a ring structure is arranged on the electric detection grounding shield.

[0048] In a possible implementation, the magnetic type limiting device can be a magnet integrated in the electric detection grounding shield 72. The magnet can cooperate with the metal or magnet on the corresponding position of the insulating support 20 to tightly close the electric detection grounding rod 71 in the normal state, and the magnetic attraction force can be overcome by the staff using a special tool to ensure that the electric detection grounding shield 72 is pulled open to expose the electric detection grounding rod 71.

[0049] More specifically, it further comprises a base 60, and the insulating support 20 is fixedly connected with the base 60. In a possible implementation, an insulating column extends from the middle part of the insulating support 20, and the bottom end of the insulating column is fixedly connected with the base 60. A closed lightning arrester 50 is further integrated and installed on the insulating support 20, and the closed lightning arrester 50 can be configured to communicate with the user side line or the power side line. The closed lightning arrester 50 is threadedly connected with a disconnector 51, and the disconnector 51 is connected with the base 60 through a lightning arrester grounding insulating wire 52. The base 60 is provided with a mounting hole and a grounding bolt to realize grounding.

[0050] Further specifically, the high-voltage insulated cable 40 in the line is stripped of the outer insulation as required and is effectively connected to the insulated fast pressure terminal 30 of the insulated support 20. The insulated fast pressure terminal 30 comprises an insulated cover main housing 31 and a cable sealing end cover 33. The insulated cover main housing 31 allows the cable of the external line to enter from the axial opening, and the insulated cover main housing 31 is provided with a fixing device for fixing the cable. The cable sealing end cover 33 is sealingly installed at the axial opening of the insulated cover main housing 31 and allows the cable to pass through. The side surface of the insulated cover main housing 31 is provided with a mounting groove in which the fixing device is arranged, and the opening of the mounting groove is sealingly connected with an insulated cover sealing cover 32. The cable sealing end cover 33 is sealingly connected with the cable through a cable sealing rubber sleeve 41.

[0051] The technical scheme of the present application is a fully-enclosed integrated T-shaped disconnecting switch, which is usually used as a switch when a branch line is drawn out from an overhead line. When closing, the ground operator usually drives the pull ring 11 on the knife switch 10 with a special tool such as a Lijie stick, the knife switch 10 rotates around the rotating support 15 by a certain angle, so that the power side moving contact 13 is engaged with the power side static contact 22, and the user side moving contact 14 is engaged with the user side static contact 21, and when the hook 12 is completely locked with the lock catch 16, the closing is realized. Under normal circumstances, the closed lightning arrester 50 is connected to the branch line and does not work. When the overvoltage in the line fault reaches the protection threshold of the lightning arrester, the closed lightning arrester 50 becomes nonlinear conduction, protecting the electrical appliances in the branch line.

[0052] When the branch line or the electrical appliances of the branch line are overhauled, in order to ensure the safety of the overhaul personnel and provide obvious isolation of the break, the opening operation is required. First, the ground operator pulls open the grounding protection cover 72 with a special tool, and hangs a special grounding wire on the grounding rod 71; then the pull ring 11 is pulled with a special tool, and the hook 12 is driven to be separated from the lock catch 16, the knife switch 10 rotates around the rotating support 15 as the center, so that the power side moving contact 13 is separated from the power side static contact 22, and the user side moving contact 14 is separated from the user side static contact 21, and when the knife switch 10 rotates to the limit angle, the opening is completed.

[0053] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0054] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A totally enclosed integrated T-junction isolator, characterized by, The device comprises an insulating support (20) on which a power supply side static contact (22) and a user side static contact (21) are integrated, the power supply side and the user side of the insulating support (20) are provided with an insulating quick pressure contact terminal (30) of a connecting line, and the user side of the insulating support (20) is further provided with an electricity testing grounding device (70); A knife switch (10) is rotatably installed on the insulating support (20), the knife switch (10) is provided with a power supply side moving contact (13) and a user side moving contact (14), and a closing locking connecting device is arranged between the free end of the knife switch (10) and the insulating support (20); The knife switch (10) comprises a closing state and an opening state on the insulating support (20): In the closing state, the free end of the knife switch (10) is connected with the insulating support (20), the power supply side moving contact (13) is connected with the power supply side static contact (22), and the user side moving contact (14) is connected with the user side static contact (21); In the opening state, the free end of the knife switch (10) is separated from the insulating support (20), the power supply side moving contact (13) is disconnected from the power supply side static contact (22), and the user side moving contact (14) is disconnected from the user side static contact (21).

2. The fully-enclosed integrated T-junction isolator of claim 1, wherein, The electricity testing grounding device (70) comprises an electricity testing grounding rod (71) and an electricity testing grounding protective cover (72), the electricity testing grounding rod (71) is integrated on the insulating support (20), and one end of the electricity testing grounding rod (71) extends from the insulating support (20); The electricity testing grounding protective cover (72) is sleeved on the part of the electricity testing grounding rod (71) extending from the insulating support (20), the electricity testing grounding protective cover (72) can move along the axial direction of the electricity testing grounding rod (71), and the electricity testing grounding protective cover (72) is provided with a magnetic type limiting device.

3. The fully-enclosed integrated T-junction isolator of claim 1, wherein, The knife switch (10) further comprises a conductive row, and the conductive row connects the power supply side moving contact (13) and the user side moving contact (14); The closing locking connecting device comprises a hook (12) arranged on the movable end of the knife switch (10) and a lock catch (16) arranged on the insulating support (20), and the hook (12) and the lock catch (16) are connected in a clamping mode.

4. The fully-enclosed integrated T-junction isolator of claim 1, wherein, The movable end of the knife switch (10) is further provided with a pull ring (11).

5. The fully-enclosed integrated T-junction isolator of claim 1, wherein, The insulating quick pressure contact terminal (30) comprises an insulating cover main shell (31) and a cable sealing end cover (33); The insulating cover main shell (31) allows the cable of an external connecting line to enter from an axial opening, the insulating cover main shell (31) is provided with a fixing device for fixing the cable, the cable sealing end cover (33) is sealingly installed at the axial opening of the insulating cover main shell (31), and the cable sealing end cover (33) allows the cable to pass through.

6. The fully-enclosed integrated T-junction isolator of claim 5, wherein, A mounting groove is formed in the side surface of the insulating cover main shell (31), the fixing device is arranged in the mounting groove, and an insulating cover sealing cover (32) is sealingly connected to the opening of the mounting groove.

7. The fully-enclosed integrated T-junction isolator of claim 5, wherein, The cable sealing end cover (33) is sealingly connected with the cable through a cable sealing rubber sleeve (41).

8. The fully-enclosed integrated T-junction isolator of claim 1, wherein, A base (60) is further provided, and the insulating support (20) is fixedly connected with the base (60).

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