Cable sheath grounding ring current on-line monitoring device

Abstract

The utility model discloses a cable sheath grounding ring current on-line monitoring device, which relates to the technical field of cable ring current monitoring and comprises a vertical rod, a monitor shell is fixed on the outer wall of the vertical rod through a mounting frame, and a front panel for protecting the monitor shell is mounted on the outer wall of the monitor shell. The limiting mechanism is arranged on the monitor shell and the front panel and is used for limiting the monitor shell and the front panel; the limiting mechanism comprises a guide unit and a limiting unit; and the guide unit is used for guiding the movement of the limiting unit. According to the utility model, through the arrangement of the limiting mechanism, when the detector shell and the front panel need to be separated, the limiting rods can be close to each other by rotating the second rotating block, so that the front panel and the monitor shell can be quickly mounted and connected, and the working efficiency is further improved; and a worker can conveniently maintain and repair components in the detector shell.

Description

Technical Field

[0001] The utility model relates to the technical field of cable circulation monitoring, in particular to an online monitoring device for cable sheath grounding circulation. Background Art

[0002] The cable sheath refers to a sealed metal sheath wrapped around the outer layer of the cable to prevent moisture from penetrating. Power cables have been widely used to transmit electric energy in cities. The induced voltage in the sheath of high-voltage cables is a common phenomenon in power cables. Excessive sheath voltage not only affects the safety of people and related equipment, but more importantly, the sheath voltage generates sheath circulating current. The sheath current not only causes energy loss and reduces transmission efficiency, but also increases the cable temperature, affecting the cable life.

[0003] To this end, people use a cable sheath circulating current monitoring device to detect the cable. The current method for detecting the sheath circulating current is to install a current sensor on the cable sheath grounding wire, and connect the current sensor to the monitoring device, and detect the sheath circulating current through the monitoring device. In the prior art, in order to better detect the sheath circulating current, the monitoring device is fixed to the outside world through a vertical pole, and the height is relatively high. The front panel of the monitoring device is generally connected by bolts. The high height makes it inconvenient to use tools to disassemble the front panel, thereby performing maintenance and repair on the inside of the monitoring device. For this reason, the utility model proposes an online monitoring device for cable sheath grounding circulating current. Utility Model Content

[0004] The purpose of the utility model is to provide an online monitoring device for grounding circulation current of a cable sheath in order to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online monitoring device for grounding loop current of a cable sheath, comprising a vertical pole, a monitor housing is fixed to the outer wall of the vertical pole through a mounting frame, a front panel for protecting the monitor housing is installed on the outer wall of the monitor housing, and a limiting mechanism is arranged on the monitor housing and the front panel, and the limiting mechanism is used to be located on the monitor housing and the front panel to provide limiting;

[0006] The limiting mechanism includes a guiding unit and a limiting unit;

[0007] The guide unit is used to provide guidance for the movement of the limiting unit;

[0008] The limiting unit is used to provide a limit for the connection between the monitor housing and the front panel.

[0009] As a further solution of the utility model: the guide unit includes a first rotating block, a positioning block, a rotating rod, and a second rotating block;

[0010] The first rotating block is rotatably connected to the inner wall of the front panel, and the first rotating block is used to drive the rotating rod and the positioning block to rotate synchronously;

[0011] The positioning block is fixed to the outer wall of the first rotating block and extends to the inner wall of the front panel, and the positioning block is used to limit the rotation of the first rotating block;

[0012] The rotating rod is fixed at the end of the first rotating block and is located inside the front panel, and the rotating rod is used to synchronously drive the second rotating block to rotate;

[0013] The second rotating block is rotatably mounted on the inner wall of the front panel, and the second rotating block is used to give a thrust to the limit rods to move closer to each other during the rotation process.

[0014] As a further solution of the utility model: the limiting unit includes a docking block, a limiting rod, a guide rod, and a spring;

[0015] The docking block is installed in the inner cavity of the monitor housing, and the docking block is used to provide a limit for the docking of the monitor housing and the front panel;

[0016] The limiting rod is slidably mounted on the outer wall of one end of the second rotating block, and the limiting rod is used to cooperate with the docking block to limit the monitor housing and the front panel;

[0017] The guide rod is fixed in the inner cavity of the front panel and passes through the limiting rod, and the guide rod is used to provide guidance for the vertical movement of the limiting rod;

[0018] The two ends of the spring are respectively clamped on the inner wall of the front panel and the outer wall of the first rotating block, and the spring is used to always provide an inward pressing force for the first rotating block.

[0019] As a further solution of the utility model: there are multiple limit rods, and the limit rods are grouped in pairs, and the limit rods in one group are symmetrically distributed in the inner cavity of the front panel and are rotatably connected to the inner wall of the second rotating block.

[0020] As a further solution of the utility model: an outer wall at one end of the second rotating block is provided with an elliptical sliding groove for the limit rod to move up and down, and the limit rod is rotatably connected to the outer wall at one end of the second rotating block through a sliding block.

[0021] As a further solution of the utility model: the outer wall of the limit rod is in an "L"-shaped structure as a whole, and the protrusion at one end of the limit rod is in an inclined state near the side of the first rotating block.

[0022] As a further solution of the utility model: the inner cavity of the docking block is provided with a hole groove for the limiting rods in a state of being close to each other to pass through, and the inner cavity of the front panel is formed with a movable groove for the limiting rods to move up and down.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] By setting up a limit mechanism, when it is necessary to separate the detector housing and the front panel, the limit rods can be moved closer to each other by rotating the second rotating block, thereby quickly contacting the installation connection between the front panel and the monitor housing, further improving work efficiency and facilitating staff to maintain and repair components inside the detector housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the installation structure of the front panel of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the limiting mechanism of the utility model.

[0028] In the figure: 1, vertical pole; 2, monitor housing; 3, front panel; 4, limiting mechanism; 401, docking block; 402, first rotating block; 403, positioning block; 404, rotating rod; 405, second rotating block; 406, limiting rod; 407, guide rod; 408, spring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 3 In an embodiment of the utility model, a cable sheath grounding loop current online monitoring device includes a pole 1, a monitor housing 2 is fixed to the outer wall of the pole 1 through a mounting frame, a front panel 3 for protecting the monitor housing 2 is installed on the outer wall of the monitor housing 2, and a limiting mechanism 4 is arranged on the monitor housing 2 and the front panel 3, and the limiting mechanism 4 is used to be located on the monitor housing 2 and the front panel 3 to provide limiting;

[0031] The limiting mechanism 4 includes a guide unit and a limiting unit;

[0032] The guide unit is used to provide guidance for the movement of the limiting unit;

[0033] The limiting unit is used to provide a limit for the connection between the monitor housing 2 and the front panel 3;

[0034] The guide unit includes a first rotating block 402, a positioning block 403, a rotating rod 404, and a second rotating block 405;

[0035] The first rotating block 402 is rotatably connected to the inner wall of the front panel 3, and is used to drive the rotating rod 404 and the positioning block 403 to rotate synchronously;

[0036] The positioning block 403 is fixed to the outer wall of the first rotating block 402 and extends to the inner wall of the front panel 3. The positioning block 403 is used to limit the rotation of the first rotating block 402.

[0037] The rotating rod 404 is fixed to the end of the first rotating block 402 and is located inside the front panel 3. The rotating rod 404 is used to synchronously drive the second rotating block 405 to rotate;

[0038] The second rotating block 405 is rotatably mounted on the inner wall of the front panel 3, and the second rotating block 405 is used to give a thrust to the limit rods 406 to move closer to each other during the rotation process;

[0039] The limiting unit includes a docking block 401, a limiting rod 406, a guide rod 407, and a spring 408;

[0040] The docking block 401 is installed in the inner cavity of the monitor housing 2, and the docking block 401 is used to provide a limit for the docking of the monitor housing 2 and the front panel 3;

[0041] The limiting rod 406 is slidably mounted on the outer wall of one end of the second rotating block 405, and the limiting rod 406 is used to cooperate with the docking block 401 to limit the monitor housing 2 and the front panel 3;

[0042] The guide rod 407 is fixed in the inner cavity of the front panel 3 and passes through the limiting rod 406. The guide rod 407 is used to provide guidance for the vertical movement of the limiting rod 406.

[0043] Two ends of the spring 408 are respectively clamped on the inner wall of the front panel 3 and the outer wall of the first rotating block 402 , and the spring 408 is used to always provide an inward pressing force for the first rotating block 402 .

[0044] The first rotating block 402 is rotated by 90 degrees to make the positioning block 403 away from the limiting groove of the outer wall of the front panel 3. The rotation of the first rotating block 402 will also synchronously drive the rotating rod 404 and the positioning block 403 to rotate. The rotating rotating rod 404 will be synchronously driven by the outer wall protrusion of the outer wall to rotate. When the second rotating block 405 is rotated, the rotating second rotating block 405 will synchronously give an inward extrusion force to the limit rod 406 through the elliptical groove on the outer wall, so that the limit rod 406 is close to each other along the outer wall of the guide rod 407, so that one end of the limit rod 406 is no longer stuck on the outer wall of one side of the docking block 401, and the positioning block 403 will also be stuck on the outer wall of the front panel 3 under the action of the spring 408 at this time, to limit the rotation of the first rotating block 402, and so on, to rotate multiple first rotating blocks 402, so that the limit rod 406 is in a position where it can pass through the hole groove on the docking block 401, at this time, the front panel 3 can be given an outward pulling force, so that the front panel 3 and the monitor housing 2 are separated, thereby achieving the purpose of quickly releasing the limit on the monitor housing 2 and the front panel 3, facilitating high-altitude operations, and improving safety and work efficiency.

[0045] Please refer to Figure 1-Figure 3 There are multiple limit rods 406, and the limit rods 406 are grouped in pairs. One group of limit rods 406 is symmetrically distributed in the inner cavity of the front panel 3 and is rotatably connected to the inner wall of the second rotating block 405. An elliptical sliding groove is provided on the outer wall of one end of the second rotating block 405 for the limit rod 406 to move up and down. The limit rod 406 is rotatably connected to the outer wall of one end of the second rotating block 405 through a slider. The outer wall of the limit rod 406 is an "L"-shaped structure as a whole. The protrusion at one end of the limit rod 406 is inclined close to the side of the first rotating block 402. The inner cavity of the docking block 401 is provided with a hole groove for the limit rods 406 that are in a state of being close to each other to pass through. The inner cavity of the front panel 3 is formed with a movable groove for the limit rod 406 to move up and down.

[0046] In this embodiment: through this structure, during the rotation of the first rotating block 402, the elliptical groove on the second rotating block 405 can give the limiting rod 406 an outward thrust, so that the limiting rods 406 move away from each other along the outer wall of the guide rod 407. At this time, the protrusion at one end of the limiting rod 406 will extend outward, crossing the hole groove on the docking block 401, and the end of the limiting rod 406 with an inclined surface will give the front panel 3 an extrusion force to approach the monitor housing 2, so that the monitor housing 2 and the front panel 3 are connected more tightly, until the positioning block 403 is stuck in the limiting groove on the outer wall of the front panel 3, thereby completing the limiting of the monitor housing 2 and the front panel 3.

[0047] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An online monitoring device for cable sheath grounding circulation current, comprising a vertical pole (1), a monitor housing (2) being fixed to the outer wall of the vertical pole (1) via a mounting frame, a front panel (3) being mounted on the outer wall of the monitor housing (2) for protecting the monitor housing (2), characterized in that: A limiting mechanism (4) is arranged on the monitor housing (2) and the front panel (3), and the limiting mechanism (4) is used to provide limiting for the monitor housing (2) and the front panel (3); The limiting mechanism (4) comprises a guiding unit and a limiting unit; The guide unit is used to provide guidance for the movement of the limiting unit; The limiting unit is used to provide a limit for the connection between the monitor housing (2) and the front panel (3).

2. The cable sheath grounding circulation online monitoring device according to claim 1 is characterized in that: The guide unit comprises a first rotating block (402), a positioning block (403), a rotating rod (404), and a second rotating block (405); The first rotating block (402) is rotatably connected to the inner wall of the front panel (3), and the first rotating block (402) is used to drive the rotating rod (404) and the positioning block (403) to rotate synchronously; The positioning block (403) is fixed to the outer wall of the first rotating block (402) and extends to the inner wall of the front panel (3), and the positioning block (403) is used to limit the rotation of the first rotating block (402); The rotating rod (404) is fixed at the end of the first rotating block (402) and is located inside the front panel (3), and the rotating rod (404) is used to synchronously drive the second rotating block (405) to rotate; The second rotating block (405) is rotatably mounted on the inner wall of the front panel (3), and the second rotating block (405) is used to give the limiting rods (406) a thrust to move toward each other during the rotation process.

3. The cable sheath grounding circulation online monitoring device according to claim 2 is characterized in that: The limiting unit comprises a docking block (401), a limiting rod (406), a guide rod (407), and a spring (408); The docking block (401) is installed in the inner cavity of the monitor housing (2), and the docking block (401) is used to provide a limit for the docking of the monitor housing (2) and the front panel (3); The limiting rod (406) is slidably mounted on an outer wall of one end of the second rotating block (405), and the limiting rod (406) is used to cooperate with the docking block (401) to limit the monitor housing (2) and the front panel (3); The guide rod (407) is fixed in the inner cavity of the front panel (3) and passes through the limiting rod (406), and the guide rod (407) is used to provide guidance for the vertical movement of the limiting rod (406); The two ends of the spring (408) are respectively clamped on the inner wall of the front panel (3) and the outer wall of the first rotating block (402), and the spring (408) is used to always provide an inward pressing force for the first rotating block (402).

4. The cable sheath grounding circulation current online monitoring device according to claim 3 is characterized in that: The number of the limiting rods (406) is multiple, and the limiting rods (406) are arranged in groups of two. A group of limiting rods (406) is symmetrically distributed in the inner cavity of the front panel (3) and is rotatably connected to the inner wall of the second rotating block (405).

5. The cable sheath grounding circulation current online monitoring device according to claim 3 is characterized in that: An elliptical sliding groove for the limit rod (406) to move up and down is provided on the outer wall of one end of the second rotating block (405), and the limit rod (406) is rotatably connected to the outer wall of one end of the second rotating block (405) via a sliding block.

6. The cable sheath grounding circulation online monitoring device according to claim 3 is characterized in that: The outer wall of the limiting rod (406) is in an "L"-shaped structure as a whole, and the protruding portion at one end of the limiting rod (406) is in an inclined state near the side of the first rotating block (402).

7. The cable sheath grounding circulation current online monitoring device according to claim 3 is characterized in that: The inner cavity of the docking block (401) is provided with a hole groove for the limiting rod (406) in a state of being close to each other to pass through, and the inner cavity of the front panel (3) is formed with a movable groove for the limiting rod (406) to move up and down.

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