A flexible cable drainage wire fixing frame

Abstract

The present invention relates to a flexible cable drainage line fixing frame, comprising an insulating plate, at least one group of insulating hooks movably connected to the top of the insulating plate, a placement groove for accommodating drainage lines connected to the bottom, a protective cavity detachably connected to the insulating plate provided in the top space of the placement groove, an open-type current transformer movably connected between the insulating plate and the placement groove via a rotating shaft; the insulating plate is rectangular, the cross-section of the placement groove is U-shaped, and the side wall of one side of the U-shaped shape is connected to the insulating plate to form a "J" shape. With the conductor to be repaired as a fixed point, the temporarily overlapped flexible cable drainage line is hung in the space below parallel to the conductor to be repaired by using insulating hooks, thereby reducing the stress on the conductive end caps at both ends of the flexible cable drainage line, preventing the flexible cable drainage line from swinging in the air, and making the contacts in the conductive end caps in close contact with the overhead conductors, thereby improving the safety of using the flexible cable as a drainage line in bypass operations.

Description

Technical Field

[0001] The invention relates to the technical field of live working, in particular to a flexible cable drainage wire fixing frame. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In non-stop maintenance, bypass operation is the main maintenance method. By hanging bypass flexible cables on both sides of the maintenance area, the bypass load switch is operated to connect the flexible cables. At this time, the maintenance line and the bypass flexible cable loop run in parallel, and then the switches on both sides of the fault area are disconnected, so that the load of the fault area is temporarily borne by the flexible cables, thereby repairing the fault area.

[0004] The ends of the bypass flexible cable are provided with conductive end caps, which play the role of current flow and fixation. When in use, the flexible cable is hung on the overhead line through the conductive end caps at the ends, thereby connecting with the main line. Since the flexible cable is used temporarily and lacks a fixing device, its own weight is borne by the conductive end caps.

[0005] It is easy to hit the flexible cable during wind blowing or moving the insulation bucket, causing relative movement between the conductive end cap and the wire in its groove, reducing the flow capacity of the flexible cable. The reduced flow capacity will cause severe heat generation at the contact point, which will seriously damage the equipment and cause arc short circuit, posing a great safety hazard to the operators. At the same time, during the operation, the temporarily hung flexible cable is close to the normally operating wire, so it is easy to hit the wire or nearby equipment during the moving insulation bucket, increasing the danger of the operation. Summary of the invention

[0006] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a flexible cable drainage line fixing bracket, which uses the cable to be repaired as a fixing point, and uses the fixing bracket to hang the temporarily used flexible cable drainage line in the space below parallel to the cable to be repaired, thereby reducing the force on the conductive end caps at both ends of the flexible cable drainage line and preventing the flexible cable drainage line from swinging in the air.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] The first aspect of the present invention provides a flexible cable drainage wire fixing frame, comprising: an insulating plate, at least one group of insulating hooks movably connected to the top of the insulating plate, a placement groove for accommodating the drainage wire connected to the bottom, a protective cavity detachably connected to the insulating plate is provided in the top space of the placement groove, an open-type current transformer is movably connected to the placement groove via a rotating shaft; the insulating plate is rectangular, the cross-section of the placement groove is U-shaped, and the side wall on one side of the U-shape is connected to the insulating plate to form a "J" shape.

[0009] A rotating shaft is provided at the connection between the insulating plate and the placement groove, the rotating shaft movably connects one end of the port-type current transformer, and the other end of the port-type current transformer is detachably connected to the edge of the placement groove through a fixing buckle.

[0010] The insulating hooks are slidably connected along the top of the insulating board, and the spacing between two adjacent sets of insulating hooks is adjusted according to actual use requirements.

[0011] A movable splint is provided at the opening of the insulating hook, and the bottom of the movable splint is connected to the fixed base through a supporting spring. The fixed base is connected to the body of the insulating hook. The movable splint is closed with the opening of the insulating hook under the push of the supporting spring and is used to be hung on the wire to be inspected.

[0012] The inner side of the opening of the insulating hook and the side of the movable clamping plate facing the opening of the insulating hook are both provided with anti-slip layers.

[0013] The bottom of the movable clamp is also connected to an operating panel, and the operating panel is pressed downward to drive the movable clamp to move toward the insulating plate, so that the opening of the insulating hook is opened and can be hung on the wire to be repaired.

[0014] A collector connected to the open-type current transformer is arranged on the insulating board and is connected to the terminal for communication, so as to transmit the current value obtained by the open-type current transformer.

[0015] The collector has a signal processing circuit, including two pins of a current sensing module U1 connected to two pins of an operational amplifier U2, a first end of a resistor R4 and a first end of a capacitor C2 through a resistor R3.

[0016] The three pins of the current sensing module U1 are respectively connected to the three pins of the operational amplifier U2, the second end of the resistor R1 and the second end of the capacitor C1 through the resistor R2; the first end of the resistor R1 and the first end of the capacitor C1 are respectively grounded; one pin of the operational amplifier U2, the second end of the resistor R4 and the second end of the capacitor C2 are respectively connected to the output end of the signal processing circuit.

[0017] The cavity, the fixing clip, the insulating plate and the insulating hook are all made of insulating materials.

[0018] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0019] 1. Take the conductor to be repaired as a fixed point, and use an insulating hook to hang the temporarily connected flexible cable drainage line in the space below the conductor to be repaired, thereby reducing the force on the conductive end caps at both ends of the flexible cable drainage line, preventing the flexible cable drainage line from swinging in the air, and making the contacts in the conductive end caps in close contact with the overhead conductor, thereby improving the safety of using flexible cables as drainage lines in bypass operations.

[0020] 2. The open-type transformer monitors the current of the drainage line and is used as a part to fix the insulation part of the drainage line, making the overall structure of the fixing frame compact and light, which is conducive to improving the efficiency of non-stop operation.

[0021] 3. The protection cavity is used to protect the conductor area at the end of the drainage line to prevent the conductor at the end of the drainage line from being exposed to the environment when it is not connected to the wire during non-stop operation, thereby improving the safety during non-stop operation. The protection cavity isolates the conductor part of the drainage line from the surrounding environment in an insulating manner, thereby meeting the needs of non-stop operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 It is a schematic diagram of the overall structure of a flexible cable drainage wire fixing frame provided by one or more embodiments of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the flexible cable drainage wire fixing frame after the protective cavity is removed provided by one or more embodiments of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the protection cavity in the flexible cable drainage wire fixing frame provided by one or more embodiments of the present invention;

[0026] Figure 4 is a schematic structural diagram of a flexible cable drain wire fixing frame provided by one or more embodiments of the present invention when in use;

[0027] Figure 5 is a schematic diagram of the structure of a terminal matched with a fixing frame provided by one or more embodiments of the present invention;

[0028] Figure 6 It is a schematic diagram of the circuit principle for realizing current signal collection in a fixing frame provided by one or more embodiments of the present invention;

[0029] In the figure: 1. Insulating plate; 2. Insulating hook; 3. Anti-slip layer; 4. Operating panel; 5. Movable splint; 6. Support spring; 7. Fixed base; 8. Placement slot; 9. Rotating shaft; 10. Transmission line; 11. Collector; 12. Current transformer; 13. Fixed buckle; 14. Terminal; 15. Protection cavity; 16. Wire; 17. Drainage line; 151. Protection cavity body; 152. Clamping sheet; 153. Clamping seat. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] A flexible cable drain line refers to a cable used for bypass operations. Flexible cables are used to connect the power supply side and the load side at both ends of the line to be inspected, forming a power supply circuit of the power supply side - drain line - load side, which is then connected in parallel with the line. This allows the charge on the line to be inspected to be completely transferred to the drain line parallel circuit. During this type of live operation, there is no need to cut off the load carried by the line.

[0034] As described in the background technology, the ends of the flexible cables for such bypass operations are provided with conductive end caps, which play a role in current flow and fixing. When in use, the flexible cables are hung on the overhead lines through the conductive end caps at the ends, thereby connecting with the main conductors. Since the flexible cables are only used temporarily during maintenance and lack fixing devices, their own weight is borne by the conductive end caps. During the operation, they are affected by the environment (such as wind), human factors (insulated boom trucks hit the flexible cables), or line spacing (flexible cables are temporarily hung for maintenance and are relatively close to surrounding equipment or other lines), resulting in relative movement between the stressed conductive end caps and the contacts of the main conductors. On the one hand, this leads to poor contact and heat, and on the other hand, the relative movement causes the conductive end caps to be overly stressed and easily damaged.

[0035] Therefore, the following embodiment provides a flexible cable drainage line fixing bracket, which uses the cable to be repaired as a fixing point, and uses the fixing bracket to hang the temporarily used flexible cable drainage line in the space below parallel to the cable to be repaired, thereby reducing the force on the conductive end caps at both ends of the flexible cable drainage line and preventing the flexible cable drainage line from swinging in the air.

[0036] Embodiment 1:

[0037] like Figure 1-6 As shown, a flexible cable drainage wire fixing frame includes:

[0038] The insulating plate 1 has at least one set of insulating hooks 2 connected to the top and a placement groove 8 for accommodating the drainage line connected to the bottom. The top space of the placement groove 8 is provided with a protective cavity 15 which is detachably connected to the insulating plate 1.

[0039] In this embodiment, the insulating plate 1 is a rectangular plate-shaped part, the cross section of the placement groove 8 is U-shaped, and the side wall on one side of the U-shaped structure is connected to the insulating plate 1 to form an insulating plate structure with a "J"-shaped cross section.

[0040] A movable clamping plate 5 is provided in the hook groove of the insulating hook 2 on the top of the insulating plate 1 and slides along the extension direction of the hook; one end of the movable clamping plate 5 is connected to an operating plate 4 for an operator to operate and press the movable clamping plate 5 .

[0041] A fixed base 7 is provided near the middle position of the insulating hook 2, and the movable clamping plate 5 is connected to the fixed base 7 through a supporting spring 6; an anti-slip layer 3 is provided in the hook groove of the insulating hook 2 and on the movable clamping plate 5 respectively.

[0042] An open-type current transformer 12 is connected to the placement slot 8, and the rotating shaft 9 of the open-type current transformer 12 is fixed at a position between the placement slot 8 and the insulating plate 1; a fixing buckle 13 is provided on the open-type current transformer 12, and when the fixing buckle 13 is opened, the open-type current transformer 12 can be pried open to form an opening for operation.

[0043] The insulating plate and the insulating hook are respectively made of epoxy resin materials.

[0044] The above-mentioned drainage wire fixing frame can effectively fix the drainage wire during the operation process, reduce the stress on the conductive end cover, and prevent the drainage wire from swinging. At the same time, an open current transformer is used to measure the current value passing through the drainage wire in real time, and it is transmitted to the terminal wirelessly, so that the person in charge of the work can grasp the working status of the drainage wire in real time, thereby improving the safety of live working with the drainage wire fixing frame with current monitoring function.

[0045] like Figure 3 As shown, the protection cavity 15 includes a protection cavity body 151 having an opening at one end and the opening facing the side of the insulating plate. A movably connected clamping piece 151 is provided in the protection cavity body 151. The end of the drain line 17 is clamped and fixed by the clamping piece 151 and the clamping seat 153 to protect the conductor area at the end of the drain line during non-power outage operation.

[0046] One end of the protection cavity body 151 has an opening and the opening faces the side of the insulating plate 1. The clamping piece 152 includes a clamping piece body movably connected to one end of the screw. The other end of the screw can be a butterfly nut (or a similar component that can drive the screw to rotate). The screw passes through the upper top plate of the protection cavity body 151. The clamping seat 153 is fixed to the lower bottom surface of the inner side of the protection cavity body 151. The rotation of the screw pushes the clamping piece body close to the clamping seat 153, so that the distance between the clamping piece 152 and the clamping seat 153 is shortened, thereby clamping the end of the drainage line 17.

[0047] like Figure 4 As shown, when the drain wire 17 is placed in the placement slot 8, the insulating part is fixed by the open-type current transformer 12, and the conductor part at the end is used to connect with the wire 16. When the drain wire 17 is not connected with the wire 16, the conductor at the end of the drain wire 17 will be exposed to the environment and cause danger ( Figure 4 In the embodiment, the conductor at the end of the drainage line is placed in the protective cavity 15 and is clamped and fixed by the clamping sheet and the fixing rod, so that the conductor at the end of the drainage line is protected and not easily affected by the external environment, which is beneficial to subsequent wiring operations.

[0048] A collector 11 is provided in the middle of the insulating plate 1; the collector 11 is connected to the open-type current transformer 12 through a transmission line 10, and the collector 11 is connected to the terminal through wireless transmission to transmit the current value obtained by the open-type current transformer 12. The communication mode between the collector 11 and the terminal here adopts WIFI communication mode, Bluetooth communication mode, or high-speed downlink packet access communication mode.

[0049] In the present invention, the collector 11 includes: a single chip microcomputer, a signal processing circuit and a wireless communication module; the single chip microcomputer is connected to the open type current transformer 12 through the signal processing circuit, obtains the current information sensed by the open type current transformer 12, and transmits it to the terminal through the wireless communication module.

[0050] Among them, the single-chip microcomputer adopts 51 series single-chip microcomputer, or adopts ATMEGA16W single-chip microcomputer, or adopts STM32F103VET6 single-chip microcomputer.

[0051] The open-type current transformer 12 is provided with a current sensing module U1;

[0052] The signal processing circuit includes: resistor R1, resistor R2, resistor R3, resistor R4, capacitor C1, capacitor C2 and operational amplifier U2; the second pin of the current sensing module U1 is connected to the second pin of the operational amplifier U2, the first end of the resistor R4 and the first end of the capacitor C2 through the resistor R3;

[0053] The three pins of the current sensing module U1 are respectively connected to the three pins of the operational amplifier U2, the second end of the resistor R1 and the second end of the capacitor C1 through the resistor R2; the first end of the resistor R1 and the first end of the capacitor C1 are respectively grounded; one pin of the operational amplifier U2, the second end of the resistor R4 and the second end of the capacitor C2 are respectively connected to the output end of the signal processing circuit; the operational amplifier U2 adopts the TL074 operational amplifier; the current sensing module U1 adopts the STK-HD / P2M current sensor, or the AKH-0.66 current sensor, or the LM2-06 current transformer.

[0054] In this embodiment, when using the drainage wire fixing frame, the operator first presses the operating panel 4 downward with force, and the operating panel 4 drives the movable clamp 5 to move downward. At this time, the insulating hook 2 is hung on the overhead main conductor, and the pressure of the operating panel 4 is slowly released. At this time, the movable plate 5 moves upward and presses the wire tightly under the elastic force of the supporting spring 6, so that the wire fits tightly with the insulating hook 2 and the movable clamp 5. The two insulating hooks 2 on the insulating plate 1 are respectively hung on the main conductor in the same way. After the fixing frame is hung on the wire, the operator opens the fixing buckle 13 of the open-type current transformer 12, rotates the open-type current transformer 12 through the rotating shaft 9, so that the open-type current transformer 12 is in an open state, and places the drainage wire in the placement slot 8, and then closes the open-type current transformer 12 and locks the fixing buckle 13. The operator holds the end of the drainage wire, hangs it on the overhead line, and tightens the compression sleeve on the conductive end cover of the drainage wire to make the conductive end cover in close contact with the overhead line. The open-type current transformer 12 collects the current value flowing through the drainage line in real time, and transmits the data to the collector 11 through the transmission line 10. The collector 11 has the functions of data processing and wireless remote transmission, and transmits the data to the terminal 14 through wireless transmission. The person in charge of the work can grasp the current flow of the drainage line in real time through the display interface of the terminal 14, which improves the safety of using the drainage line in bypass operations.

[0055] The above structure uses the conductor to be inspected as a fixed point, and hangs the temporarily overlapped flexible cable drainage line in the space below parallel to the conductor to be inspected, thereby reducing the force on the conductive end caps at both ends of the flexible cable drainage line, preventing the flexible cable drainage line from swinging in the air, and making the contacts in the conductive end caps in close contact with the overhead conductor, thereby improving the safety of using flexible cables as drainage lines in bypass operations.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flexible cable drainage wire fixing frame, characterized in that: It comprises an insulating plate, the top of the insulating plate is movably connected to at least one set of insulating hooks, the bottom is connected to a placement groove for accommodating a drain line, the top space of the placement groove is provided with a protective cavity detachably connected to the insulating plate, and an open-type current transformer is movably connected between the insulating plate and the placement groove via a rotating shaft; the insulating plate is rectangular, the cross section of the placement groove is U-shaped, and the side wall on one side of the U-shaped is connected to the insulating plate to form a "J" shape; A movable clamp is provided at the opening of the insulating hook, the bottom of the movable clamp is connected to the fixed base through a supporting spring, the fixed base is connected to the body of the insulating hook, and the movable clamp is closed with the opening of the insulating hook under the push of the supporting spring, and is used to be hung on the wire to be repaired; The protection cavity comprises a protection cavity body having an opening at one end and the opening is toward the side of the insulating plate, and a movably connected clamping piece is arranged in the protection cavity body, and the clamping piece comprises a clamping piece body movably connected to one end of a screw rod, the screw rod passes through the upper top plate of the protection cavity body, and the clamping seat is fixed to the lower bottom surface of the inner side of the protection cavity body, and the screw rod rotates to push the clamping piece body close to the clamping seat, so that the distance between the clamping piece and the clamping seat is shortened, thereby clamping the end of the drainage line; When the drain wire is placed in the placement groove, the insulating part is fixed by the open-type current transformer, and the conductor part at the end is used to connect with the wire; when the drain wire is not connected with the wire, the drain wire is sent into the protection cavity and clamped and fixed by the clamping piece and the clamping seat, so that the conductor at the end of the drain wire is protected.

2. A flexible cable drain wire fixing frame as claimed in claim 1, characterized in that: A rotating shaft is provided at the connection between the insulating plate and the placement slot. The rotating shaft is movably connected to one end of the port-type current transformer. The other end of the port-type current transformer is detachably connected to the edge of the placement slot through a fixing buckle.

3. A flexible cable drain wire fixing frame as claimed in claim 1, characterized in that: The insulating hooks are slidably connected along the top of the insulating plate, and the spacing between two adjacent groups of insulating hooks is adjusted according to actual use requirements.

4. A flexible cable drain wire fixing frame as claimed in claim 1, characterized in that: The inner side of the opening of the insulating hook and the side of the movable clamping plate facing the opening of the insulating hook are both provided with an anti-slip layer.

5. A flexible cable drain wire fixing frame as claimed in claim 1, characterized in that: The bottom of the movable clamp is also connected to an operating plate, and the operating plate is pressed downward to drive the movable clamp to move toward the insulating plate, so that the opening of the insulating hook is opened and can be hung on the wire to be repaired.

6. A flexible cable drain wire fixing frame as claimed in claim 1, characterized in that: The insulating plate is provided with a collector connected to the open-type current transformer and is in communication connection with the terminal to transmit the current value obtained by the open-type current transformer.

7. A flexible cable drain wire fixing frame as claimed in claim 6, characterized in that: The collector has a signal processing circuit, including two pins of the current sensing module U1 connected to the second pin of the operational amplifier U2, the first end of the resistor R4 and the first end of the capacitor C2 through the resistor R3.

8. A flexible cable drain wire fixing frame as claimed in claim 7, characterized in that: The three pins of the current sensing module U1 are respectively connected to the three pins of the operational amplifier U2, the second end of the resistor R1 and the second end of the capacitor C1 through the resistor R2; the first end of the resistor R1 and the first end of the capacitor C1 are respectively grounded; one pin of the operational amplifier U2, the second end of the resistor R4 and the second end of the capacitor C2 are respectively connected to the output end of the signal processing circuit.

9. A flexible cable drain wire fixing frame as claimed in claim 1, characterized in that: The protective cavity, the fixing buckle, the insulating plate and the insulating hook are all made of insulating materials.

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