Device for segmentally detecting leakage current in bench area

Abstract

The invention discloses a bench area segmented leakage current detection device, and relates to the field of bench area segmented leakage current detection devices. The device comprises a distribution box, a mounting rack, an adjusting unit, a positioning unit and a connecting unit. According to the bench area segmented leakage current detection device, under the rotation of the bidirectional screw rod, the rotating rod pushes the adjusting seat to move, the adjusting seat moves upwards relative to the fixed seat, and the current transformer on the adjusting seat moves upwards, at the moment, the wiring port is inserted into the connecting frame, and the wiring port is inserted into the connecting frame. According to the electric leakage protection device, the positioning block is arranged, so that the wiring port on the current transformer is in contact with and extrudes the positioning block, the positioning block compresses the extrusion spring, and the position of the current transformer is pushed under the rebound of the extrusion spring, so that the position of the current transformer is conveniently limited, and the wiring port on the current transformer is accurately connected with the electric leakage protection device; and electric leakage detection is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of devices for detecting leakage current in substations, and in particular to devices for detecting leakage current in substations. Background Art

[0002] Substation segment leakage detection is an important part of ensuring the safe and stable operation of the power system. Its main purpose is to quickly locate and solve leakage problems and reduce safety hazards and losses.

[0003] Substation segment leakage detection can reduce the scope of faults, improve maintenance efficiency, and reduce power outage time, which is of great significance to ensuring the safety of users' electricity use. The segmented detection method is used for fault troubleshooting and positioning. The entire system or line is divided into several smaller and relatively independent sections or areas, and then tested one by one to reduce the scope of the fault and finally locate the specific fault point.

[0004] In the prior art, when detecting leakage in the substation, it is necessary to perform multi-segment detection on the transformer, and to perform leakage detection on the current transformer in the distribution box. When performing the detection, it is necessary to manually connect the current transformer with the leakage protection device to perform multi-segment current detection, but it is necessary to manually connect the current transformer with the leakage protection device separately, and it is impossible to control multiple groups of current transformers and leakage protection devices to be connected at the same time, resulting in a long time required to connect one by one to detect the current, and it is impossible to quickly narrow the scope of the fault, resulting in low maintenance efficiency. In addition, when connecting the current transformer with the leakage protection device, there are certain installation risks, so we propose a substation segment leakage current detection device. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a substation segmented leakage current detection device, which solves the problem that it is impossible to control the simultaneous connection of multiple groups of current transformers and leakage protection devices, resulting in a long time required to connect them one by one to detect the current, and it is impossible to quickly narrow the scope of the fault, resulting in low maintenance efficiency. In addition, when connecting the current transformer and the leakage protection device, there are certain installation risks.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a substation segment leakage current detection device, comprising a distribution box, a mounting frame, an adjustment unit, a positioning unit and a connection unit, wherein the mounting frame is fixedly installed in the distribution box, the adjustment unit is located directly below the positioning unit, the positioning unit and the connection unit are installed in the mounting frame, the connection unit is located directly above the positioning unit, and a controller is installed on the mounting frame;

[0009] The adjustment unit comprises a fixing seat mounted on a mounting frame, a distributor is mounted below the fixing seat, an adjustment seat is arranged above the fixing seat, and a plurality of rotating rods are rotatably connected between the fixing seat and the adjustment seat;

[0010] The positioning unit comprises a sliding seat slidably connected to the adjusting seat, and a current transformer is slidably connected to the top end surface of the sliding seat;

[0011] A plurality of leakage protection devices are installed on the mounting frame, and the connecting unit comprises a connecting frame fixedly installed on the leakage protection device, and a plurality of groups of positioning blocks are slidably connected to the inner wall of the connecting frame, and the positioning blocks are correspondingly arranged directly below the connecting port.

[0012] Preferably, a mounting plate is mounted on the mounting frame, and a top end surface of the mounting plate is fixedly connected to a fixing seat.

[0013] Preferably, a bidirectional screw is rotatably connected to the inner wall of the fixing seat, a transmission wheel is sleeved on the outer peripheral wall of the bidirectional screw, a transmission belt is interference fit on the outer peripheral wall of the transmission wheel, and the transmission belt is connected to the driving mechanism.

[0014] Preferably, the outer peripheral wall of the bidirectional screw is threadedly connected with a plurality of nut seats, the top end surface of the nut seat is fixedly connected with a sliding block, the sliding block is rotatably connected to the rotating rod, and the end of the rotating rod away from the sliding block is rotatably connected to the adjustment seat.

[0015] Preferably, a plurality of connecting seats are arranged above the adjusting seat, the connecting seats are fixedly connected to two ends of the sliding seat, and the connecting seats are located on both sides of the current transformer.

[0016] Preferably, a plurality of first sliding rods and second sliding rods are slidably connected to the inner wall of the connecting seat, one end of the plurality of first sliding rods and second sliding rods is fixedly connected to a contact seat, the contact seat is fitted with the current transformer, a positioning spring is fixedly connected between the contact seat and the connecting seat, and the positioning spring is sleeved on the outer peripheral wall of the second sliding rod.

[0017] Preferably, the current transformer is located directly below the connecting frame, and a wiring port is provided on the current transformer, and the wiring port is located directly below the corresponding positioning block.

[0018] Preferably, a moving rod is fixedly connected to the outer wall of the positioning block, the moving rod is slidably connected to the inner wall of the connecting frame, and one end of the moving rod outside the connecting frame is fixedly connected to a fixed block.

[0019] Preferably, an extrusion spring is sleeved on the outer peripheral wall of the moving rod, and two ends of the extrusion spring are respectively fixedly connected to the positioning block and the connecting frame.

[0020] The present invention discloses a leakage current detection device for a substation, which has the following beneficial effects:

[0021] 1. The stage-by-stage leakage current detection device rotates the bidirectional lead screw, so that the nut seat threadedly connected to the outer wall rotates, so that the sliding block slides along the inner wall of the fixed seat, and the movement of the sliding block drives the rotating rod to rotate, so that the rotating rod pushes the adjusting seat to move, so that the adjusting seat moves upward relative to the fixed seat, so that the current transformer on the adjusting seat moves upward, and at this time the wiring port is plugged into the connecting frame.

[0022] 2. The substation segmented leakage current detection device has a wiring port plugged into the connection frame, so that the wiring port on the current transformer contacts and squeezes the positioning block. The positioning block compresses the squeezing spring, and the position of the current transformer is pushed under the rebound of the squeezing spring, which is convenient for limiting the position of the current transformer and ensuring that the wiring port on the current transformer is accurately connected to the leakage protection device, thereby performing leakage detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the power distribution box of the present invention;

[0026] Figure 3 The schematic diagram of the mounting frame structure connection of the present invention is

[0027] Figure 4 This is a schematic diagram of the connection of the mounting plate of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the regulating unit of the present invention;

[0029] Figure 6 This is an enlarged view of the regulating unit of the present invention;

[0030] Figure 7 This is a schematic diagram of the positioning unit structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the connection unit of the present invention;

[0032] Fig. 9 It is a schematic diagram of the internal structure of the connecting unit of the present invention.

[0033] In the figure: 1. distribution box; 2. mounting frame; 201. mounting plate; 3. controller; 4. distributor; 5. adjusting unit; 501. fixing seat; 502. adjusting seat; 503. rotating rod; 504. bidirectional screw rod; 505. nut seat; 506. transmission belt; 507. sliding block; 6. positioning unit; 601. current transformer; 602. sliding seat; 603. connecting seat; 604. first sliding rod; 605. contact seat; 606. second sliding rod; 607. positioning spring; 7. connecting unit; 701. connecting frame; 702. positioning block; 703. moving rod; 704. extrusion spring; 705. fixing block. DETAILED DESCRIPTION

[0034] 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 are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The embodiment of the present application provides a substation segmented leakage current detection device, which solves the problem of manually connecting the current transformer 601 to the leakage protection device separately, and being unable to control multiple groups of current transformers 601 to be connected to the leakage protection device at the same time, resulting in a long time required to connect one by one to detect the current, and being unable to quickly narrow the fault range, resulting in low maintenance efficiency. In addition, when the current transformer 601 is connected to the leakage protection device, there are certain installation hidden dangers. Under the rotation of the bidirectional screw rod 504, the nut seat 505 threadedly connected to its outer peripheral wall is rotated, so that the sliding block 507 slides along the inner wall of the fixed seat 501, and the sliding block 507 The movement drives the rotating rod 503 to rotate, so that the rotating rod 503 pushes the adjusting seat 502 to move, so that the adjusting seat 502 moves upward relative to the fixed seat 501, and the current transformer 601 on the adjusting seat 502 moves upward. At this time, the wiring port is plugged into the connecting frame 701, so that the wiring port on the current transformer 601 contacts and squeezes the positioning block 702, and the positioning block 702 compresses the squeezing spring 704. Under the rebound of the squeezing spring 704, the position of the current transformer 601 is pushed, which is convenient for limiting the position of the current transformer 601, ensuring that the wiring port on the current transformer 601 is accurately connected to the leakage protection device, and then leakage detection is performed.

[0036] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] The embodiment of the present invention discloses a device for detecting leakage current in sections.

[0038] According to the attached Figure 1-9 As shown, it includes a distribution box 1, a mounting frame 2, an adjustment unit 5, a positioning unit 6 and a connection unit 7. The mounting frame 2 is fixedly installed in the distribution box 1, the adjustment unit 5 is located directly below the positioning unit 6, the positioning unit 6 and the connection unit 7 are installed in the mounting frame 2, the connection unit 7 is located directly above the positioning unit 6, and a controller 3 is installed on the mounting frame 2;

[0039] The adjustment unit 5 includes a fixed seat 501 installed on the mounting frame 2, a distributor 4 is installed below the fixed seat 501, an adjustment seat 502 is arranged above the fixed seat 501, and a plurality of rotating rods 503 are rotatably connected between the fixed seat 501 and the adjustment seat 502. When the bidirectional screw rod 504 rotates, the nut seat 505 threadedly connected to its outer peripheral wall rotates, so that the sliding block 507 slides along the inner wall of the fixed seat 501, and the movement of the sliding block 507 drives the rotating rod 503 to rotate, so that the rotating rod 503 pushes the adjustment seat 502 to move, so that the adjustment seat 502 moves upward relative to the fixed seat 501, so that the current transformer 601 on the adjustment seat 502 moves upward, and at this time, the wiring port is plugged into the connecting frame 701;

[0040] The positioning unit 6 comprises a sliding seat 602 slidably connected to the adjusting seat 502, and a current transformer 601 is slidably connected to the top end surface of the sliding seat 602;

[0041] A plurality of leakage protection devices are installed on the mounting frame 2, and the connecting unit 7 includes a connecting frame 701 fixedly installed on the leakage protection device, and a plurality of groups of positioning blocks 702 are slidably connected to the inner wall of the connecting frame 701, and the positioning blocks 702 are correspondingly arranged directly below the connecting port, and the wiring port is plugged into the connecting frame 701, so that the wiring port on the current transformer 601 contacts and squeezes the positioning blocks 702, and the positioning blocks 702 compress the squeezing springs 704, and the position of the current transformer 601 is pushed under the rebound of the squeezing springs 704, so as to facilitate the limitation of the position of the current transformer 601, and ensure that the wiring port on the current transformer 601 is accurately connected to the leakage protection device, so as to perform leakage detection.

[0042] A mounting plate 201 is installed on the mounting frame 2, and the top end surface of the mounting plate 201 is fixedly connected to the fixing seat 501. By installing the mounting plate 201 at a suitable height on the mounting frame 2, the height of the fixing seat 501 is adjusted, and then the positions of the distributor 4 and the current transformer 601 are adjusted, so as to facilitate the connection between the current transformer 601 and the leakage protection device.

[0043] A bidirectional screw rod 504 is rotatably connected to the inner wall of the fixed seat 501, and a transmission wheel is sleeved on the outer peripheral wall of the bidirectional screw rod 504. A transmission belt 506 is interference fit on the outer peripheral wall of the transmission wheel. The transmission belt 506 is connected to the driving mechanism. When it is necessary to connect multiple groups of current transformers 601 with the leakage protection device at the same time, multiple driving mechanisms are controlled to start at the same time. At this time, under the action of the driving mechanism, the transmission belt 506 is driven to transmit. Under the transmission of the transmission belt 506, the transmission wheel is rotated, so that the bidirectional screw rod 504 rotates along the inner wall of the fixed seat 501.

[0044] The outer peripheral wall of the bidirectional screw rod 504 is threadedly connected with a plurality of nut seats 505, and the top end surface of the nut seat 505 is fixedly connected with a sliding block 507, and the sliding block 507 is rotatably connected to the rotating rod 503, and the end of the rotating rod 503 away from the sliding block 507 is rotatably connected to the adjusting seat 502. Under the rotation of the bidirectional screw rod 504, the nut seat 505 threadedly connected to its outer peripheral wall is rotated, so that the two nut seats 505 move toward each other, and under the movement of the nut seat 505, the sliding block 507 slides along the inner wall of the fixed seat 501, and the movement of the sliding block 507 drives the rotating rod 503 to rotate, so that the rotating rod 503 pushes the adjusting seat 502 to move, so that the adjusting seat 502 moves upward relative to the fixed seat 501, so that the current transformer 601 on the adjusting seat 502 moves upward and is plugged into the connecting frame 701, so that the current transformer 601 is connected to the leakage protection device, and then leakage detection is performed;

[0045] Under the detection of multiple sets of current transformers 601 and leakage protection devices, the fault scope is quickly reduced and the maintenance efficiency is improved. When connecting the current transformer 601 and the leakage protection device, no manual connection is required, thus avoiding manual contact and avoiding the occurrence of safety hazards.

[0046] A plurality of connection seats 603 are arranged above the adjustment seat 502 . The connection seats 603 are fixedly connected to two ends of the sliding seat 602 . The connection seats 603 are located on both sides of the current transformer 601 .

[0047] A plurality of first sliding rods 604 and second sliding rods 606 are slidably connected to the inner wall of the connecting seat 603, and one end of the plurality of first sliding rods 604 and second sliding rods 606 is fixedly connected to a contact seat 605, and the contact seat 605 fits with the current transformer 601, and a positioning spring 607 is fixedly connected between the contact seat 605 and the connecting seat 603, and the positioning spring 607 is sleeved on the outer peripheral wall of the second sliding rod 606. When the current transformer 601 is installed inside the mounting frame 2, by placing the current transformer 601 in Above the sliding seat 602, first pull the contact seat 605 so that the contact seat 605 drives the first sliding rod 604 and the second sliding rod 606 to slide along the inner wall of the connecting seat 603, so that the contact seat 605 compresses the positioning spring 607. At this time, the current transformer 601 is placed on the sliding seat 602, and the contact seat 605 is released. Under the rebound of the positioning spring 607, the two contact seats 605 move toward the current transformer 601, so that the contact seat 605 limits the current transformer 601.

[0048] The current transformer 601 is located directly below the connecting frame 701. A wiring port is provided on the current transformer 601, and the wiring port is located directly below the corresponding positioning block 702. The sliding seat 602 is adjusted to slide along the adjusting seat 502, and the current transformer 601 on the sliding seat 602 is adjusted to a suitable position on the connecting frame 701. The sliding seat 602 is then limited on the adjusting seat 502 by bolts. When convenient for detection, the current transformer 601 is connected to the leakage protection device accordingly.

[0049] A moving rod 703 is fixedly connected to the outer wall of the positioning block 702, and the moving rod 703 is slidably connected to the inner wall of the connecting frame 701. One end of the moving rod 703 outside the connecting frame 701 is fixedly connected to a fixed block 705. The adjustment seat 502 moves upward relative to the fixed seat 501, so that the current transformer 601 on the adjustment seat 502 moves upward. At this time, the wiring port is plugged into the connecting frame 701, so that the wiring port on the current transformer 601 contacts and squeezes the positioning block 702.

[0050] The outer peripheral wall of the moving rod 703 is sleeved with a squeezing spring 704, and the two ends of the squeezing spring 704 are respectively fixedly connected to the positioning block 702 and the connecting frame 701. At this time, the positioning block 702 moves, so that the positioning block 702 drives the moving rod 703 to slide along the connecting frame 701. At the same time, the positioning block 702 compresses the squeezing spring 704. Under the rebound of the squeezing spring 704, the position of the current transformer 601 is pushed, which is convenient for limiting the position of the current transformer 601, ensuring that the wiring port on the current transformer 601 is accurately connected to the leakage protection device, and then leakage detection is performed;

[0051] Under the detection of multiple sets of current transformers 601 and leakage protection devices, the fault scope is quickly reduced and the maintenance efficiency is improved. When connecting the current transformer 601 and the leakage protection device, no manual connection is required, thus avoiding manual contact and avoiding the occurrence of safety hazards.

[0052] Working principle: when multiple sets of current transformers 601 need to be connected to the leakage protection device at the same time, multiple driving mechanisms are controlled to start at the same time. At this time, under the action of the driving mechanism, the transmission belt 506 is driven to transmit, and under the drive of the transmission belt 506, the transmission wheel is rotated, so that the bidirectional screw rod 504 is rotated along the inner wall of the fixed seat 501;

[0053] As the bidirectional screw rod 504 rotates, the nut seat 505 threadedly connected to its outer wall rotates, so that the two nut seats 505 move toward each other. As the nut seats 505 move, the sliding block 507 slides along the inner wall of the fixed seat 501. The movement of the sliding block 507 drives the rotating rod 503 to rotate, so that the rotating rod 503 pushes the adjusting seat 502 to move.

[0054] The adjusting seat 502 moves upward relative to the fixing seat 501, so that the current transformer 601 on the adjusting seat 502 moves upward. At this time, the wiring port is plugged into the connecting frame 701, so that the wiring port on the current transformer 601 contacts and squeezes the positioning block 702;

[0055] At this time, the positioning block 702 moves, so that the positioning block 702 drives the moving rod 703 to slide along the connecting frame 701. At the same time, the positioning block 702 compresses the extrusion spring 704. Under the rebound of the extrusion spring 704, the position of the current transformer 601 is pushed, which is convenient for limiting the position of the current transformer 601, ensuring that the wiring port on the current transformer 601 is accurately connected to the leakage protection device, and then performing leakage detection;

[0056] Under the detection of multiple sets of current transformers 601 and leakage protection devices, the fault scope is quickly reduced and the maintenance efficiency is improved. When connecting the current transformer 601 and the leakage protection device, no manual connection is required, thus avoiding manual contact and avoiding the occurrence of safety hazards.

[0057] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A leakage current detection device for substations, characterized in that: The invention comprises a distribution box (1), a mounting frame (2), an adjustment unit (5), a positioning unit (6) and a connection unit (7), wherein the mounting frame (2) is fixedly mounted in the distribution box (1), the adjustment unit (5) is located directly below the positioning unit (6), the positioning unit (6) and the connection unit (7) are mounted in the mounting frame (2), the connection unit (7) is located directly above the positioning unit (6), and a controller (3) is mounted on the mounting frame (2); The adjustment unit (5) comprises a fixed seat (501) mounted on the mounting frame (2), a distributor (4) is mounted below the fixed seat (501), an adjustment seat (502) is arranged above the fixed seat (501), and a plurality of rotation rods (503) are rotatably connected between the fixed seat (501) and the adjustment seat (502); The positioning unit (6) comprises a sliding seat (602) slidably connected to the adjustment seat (502), and a current transformer (601) is slidably connected to the top end surface of the sliding seat (602); A plurality of leakage protection devices are installed on the mounting frame (2), and the connection unit (7) comprises a connection frame (701) fixedly installed on the leakage protection device, and a plurality of groups of positioning blocks (702) are slidably connected to the inner wall of the connection frame (701), and the positioning blocks (702) are correspondingly arranged directly below the connection port.

2. The device for detecting leakage current in substations according to claim 1, characterized in that: A mounting plate (201) is mounted on the mounting frame (2), and a top end surface of the mounting plate (201) is fixedly connected to a fixing seat (501).

3. The device for detecting leakage current in each substation according to claim 2, characterized in that: A bidirectional screw rod (504) is rotatably connected to the inner wall of the fixing seat (501), a transmission wheel is sleeved on the outer peripheral wall of the bidirectional screw rod (504), a transmission belt (506) is interference-fitted on the outer peripheral wall of the transmission wheel, and the transmission belt (506) is connected to the driving mechanism.

4. The device for detecting leakage current in each substation according to claim 3, characterized in that: The outer peripheral wall of the bidirectional screw rod (504) is threadedly connected with a plurality of nut seats (505), the top end surface of the nut seat (505) is fixedly connected with a sliding block (507), the sliding block (507) is rotatably connected to the rotating rod (503), and the end of the rotating rod (503) away from the sliding block (507) is rotatably connected to the adjustment seat (502).

5. The device for detecting leakage current in each substation according to claim 4, characterized in that: A plurality of connection seats (603) are arranged above the adjustment seat (502), the connection seats (603) are fixedly connected to two ends of the sliding seat (602), and the connection seats (603) are located on both sides of the current transformer (601).

6. The device for detecting leakage current in each substation according to claim 5, characterized in that: A plurality of first sliding rods (604) and second sliding rods (606) are slidably connected to the inner wall of the connecting seat (603); one end of the plurality of first sliding rods (604) and second sliding rods (606) is fixedly connected to a contact seat (605); the contact seat (605) is fitted with the current transformer (601); a positioning spring (607) is fixedly connected between the contact seat (605) and the connecting seat (603); the positioning spring (607) is sleeved on the outer peripheral wall of the second sliding rod (606).

7. The device for detecting leakage current in each substation according to claim 6, characterized in that: The current transformer (601) is located directly below the connection frame (701), and a wiring port is provided on the current transformer (601), and the wiring port is located directly below the corresponding positioning block (702).

8. The device for detecting leakage current in each substation according to claim 7, characterized in that: A moving rod (703) is fixedly connected to the outer wall of the positioning block (702), and the moving rod (703) is slidably connected to the inner wall of the connecting frame (701), and one end of the moving rod (703) outside the connecting frame (701) is fixedly connected to a fixed block (705).

9. The device for detecting leakage current in each substation according to claim 8, characterized in that: The outer peripheral wall of the moving rod (703) is sleeved with a compression spring (704), and the two ends of the compression spring (704) are respectively fixedly connected to the positioning block (702) and the connecting frame (701).

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