CN214427557U - Repairable experimental overline device - Google Patents
Repairable experimental overline device Download PDFInfo
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- CN214427557U CN214427557U CN202120027257.1U CN202120027257U CN214427557U CN 214427557 U CN214427557 U CN 214427557U CN 202120027257 U CN202120027257 U CN 202120027257U CN 214427557 U CN214427557 U CN 214427557U
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- guide rod
- electric field
- control unit
- stress control
- field stress
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Abstract
The utility model discloses a repairable test overline device, which comprises a fixing frame, an electric field stress control unit, an insulating tube and a guide rod; the electric field stress control unit is connected with the fixing frame; the two insulating tubes are respectively connected to two sides of the electric field stress control unit and are mutually communicated, insulating gas is filled in the insulating tubes, the end parts of the insulating tubes are connected with connecting rods, the connecting rods are provided with connectors, and the two connectors are respectively connected with high-voltage leads on two sides of a wall body of the narrow door or the narrow window; the guide rod is formed by butting a guide rod A and a guide rod B, the guide rod A and the guide rod B correspondingly penetrate through two insulating tubes on two sides of the electric field stress control unit, the butting end is positioned in an inner cavity of the electric field stress control unit, and the other ends of the guide rod A and the guide rod B are correspondingly connected with two connecting rods. The utility model discloses avoid the high-pressure lead wire directly to pass the narrow window of narrow door, high-pressure lead wire can't directly pass the narrow window of narrow door when can solving the experiment for it is more convenient to test, also effectual improvement work efficiency simultaneously.
Description
Technical Field
The utility model relates to an electric power engineering technical field, concretely relates to substation equipment testing device.
Background
Because the transformer substation is built more and more littlely, in the in-process of construction, door and window are not very big, and the transformer substation is indoor has a lot of equipment and need carry out completion acceptance test after the installation, from outdoor with the high-voltage lead wire access indoor on the equipment under test, because door and window is narrow, the distance of high-voltage lead wire and door and window is not enough, will produce the discharge breakdown. The current method for solving the problem is to install two dry outdoor terminals at two ends of a cable, wherein one outdoor terminal is dragged into a substation room, and the other outdoor terminal is placed outdoors and connected with a high-voltage lead. The required cable is more than 5 meters, the weight of the whole line exceeds 100kg after the two terminals are installed, the field test is inconvenient, and the cable and the dry outdoor terminal are both solid insulation and can only be replaced after breakdown, so that the service life is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a can repair experimental overline device is provided, the problem that the narrow window of narrow door can't directly be passed to high-pressure lead wire when the solution is experimental.
In order to solve the technical problem, the utility model adopts the following technical scheme: a repairable test flying lead device, comprising:
fixing a frame: the fixed frame is fixed on the wall body of the narrow door or the narrow window;
electric field stress control unit: the electric field stress control unit is connected with the fixing frame and is provided with an inner cavity;
insulating tube: the device is provided with two insulating tubes, wherein the two insulating tubes are respectively connected to two sides of an electric field stress control unit and are mutually communicated, insulating gas is filled in the insulating tubes, the end parts of the insulating tubes are connected with connecting rods, the connecting rods are provided with connectors, and the two connectors are respectively connected with high-voltage lead wires on two sides of a wall body of a narrow door or a narrow window;
a guide rod: the electric field stress control device is formed by butt joint of a guide rod A and a guide rod B, wherein the guide rod A and the guide rod B correspondingly penetrate through two insulating tubes on two sides of an electric field stress control unit, butt joint ends are located in an inner cavity of the electric field stress control unit, and the other ends of the guide rod A and the guide rod B are correspondingly connected with two connecting rods.
Preferably, the insulating tube is connected with the electric field stress control unit by using a fixing screw.
Preferably, the electric field stress control unit is provided with a vacuum pressure gauge and a pressure valve.
Preferably, the fixing frame comprises two split fixing pieces, each fixing piece comprises a horizontal extension section, an upper vertical section extending upwards and vertically from one end of the horizontal extension section, and a lower vertical section extending downwards and vertically from the other end of the horizontal extension section, the lower vertical sections of the two fixing pieces are clamped and fixed on a wall body of a narrow door or a narrow window, and an adjusting screw and a fastening bolt are arranged between the upper vertical sections of the two fixing pieces.
Preferably, the high-voltage lead is sleeved in a shielding tube, and the shielding tube is connected with the connecting rod.
Preferably, a shielding case is connected to an end of the insulating tube, and the shielding case shields the high-voltage lead and the end of the shielding tube.
The utility model adopts the above technical scheme, following beneficial effect has:
after the position of a narrow door and a narrow window of a test path through which the high-voltage lead needs to pass is determined, adjusting the adjusting screw rod, screwing the fastening bolt to fix the fixing frame on the wall body of the narrow door or the narrow window, and arranging and fixing the stress control unit part of the repairable line crossing device above the fixing frame.
The whole guide rod is formed by the guide rod A and the guide rod B inside the device, the guide rod A and the guide rod B are connected with the high-voltage leads on two sides through the connectors, the electric current and voltage applying effects are achieved, the electric field stress control unit homogenizes and controls the electric field between the guide rod and the guide rod, all voltage is borne by filled insulating gas, the electric field distribution between the high-voltage leads and doors and windows is changed, and air breakdown caused by insufficient distance is avoided.
The left side and the right side of the electric field stress control unit are insulating tubes made of insulating materials, and the insulating tubes are connected and fixed through fixing screws, so that the creepage distance between the electric field stress control unit and the connecting rod can be increased, and flashover discharge breakdown is avoided.
Install the shield cover at insulating tube end, with high voltage lead and shield tube parcel inside the shield cover during the experiment, have about the homogenization electric field, avoid the effect of discharging.
Because connect the high-voltage lead at device both ends and test, avoid the high-voltage lead to directly pass the narrow window, can solve during the test high-voltage lead can't directly pass the narrow window, accomplish the experiment for the indoor product of transformer substation and provide an effective convenient test method for it is more convenient to test, also the effectual work efficiency that has improved simultaneously.
Insulating gas is filled in the device, if the device is subjected to internal breakdown due to overvoltage in a test, the insulating property can be recovered only by standing for a moment, repeated disassembly and repeated installation are avoided, and the risk of insulation breakdown and electric leakage does not exist.
The specific technical solution and the advantages of the present invention will be described in detail in the following detailed description with reference to the accompanying drawings.
Drawings
The invention will be further described with reference to the accompanying drawings and specific embodiments:
fig. 1 is a schematic structural view of a repairable test jumper of the present invention in a use state;
in the figure: 1-shielding tube, 2-high voltage lead, 3-shielding cover, 4-connecting rod, 5-guide rod A, 6-insulating tube, 7-insulating gas, 8-fixing screw, 9-electric field stress control unit, 10-guide rod B, 11-fixing frame, 12-fastening bolt, 13-adjusting screw, 14-pressure valve and 15-vacuum pressure gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It is to be understood that the features of the following examples and embodiments may be combined with each other without conflict.
In the present invention, the words indicating orientation or positional relationship are based only on the orientation or positional relationship shown in the drawings, and are used only for convenience of description and simplification of description, and do not indicate or imply that the device/element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, a repairable testing flying lead device includes:
a fixing frame 11: the fixed frame is arranged on the wall body of the narrow door or the narrow window;
electric field stress control unit 9: the electric field stress control unit is connected with the fixing frame and is provided with an inner cavity;
an insulating tube 6: the device is provided with two insulating tubes, wherein the two insulating tubes are respectively connected to two sides of an electric field stress control unit and are mutually communicated, insulating gas 7 is filled in the insulating tubes, the end parts of the insulating tubes are connected with a connecting rod 4, the connecting rod 4 is provided with a connector, and the two connectors on the two sides are respectively connected with high-voltage leads 2 on two sides of a wall body of a narrow door or a narrow window;
a guide rod: the electric field stress control device is formed by butt joint of a guide rod A5 and a guide rod B10, wherein the guide rod A5 and the guide rod B10 correspondingly penetrate through two insulating tubes on two sides of an electric field stress control unit, butt joint ends are located in an inner cavity of the electric field stress control unit, and the other ends of the guide rod A and the guide rod B are correspondingly connected with two connecting rods.
In order to facilitate the disassembly and assembly, the insulating tube 6 is connected with the electric field stress control unit 9 by a fixing screw 8. The electric field stress control unit is provided with a vacuum pressure gauge 15 and a pressure valve 14 to fill insulating gas and monitor air pressure. The vacuum pressure gauge and the pressure valve are grounded to the ground terminal by a soft copper wire.
As an embodiment, the fixing frame 11 includes two separated fixing members, and the fixing members include a horizontal extension section, an upper vertical section extending vertically upward from one end of the horizontal extension section, and a lower vertical section extending vertically downward from the other end of the horizontal extension section. Wherein, on the lower vertical section centre gripping of two mountings was fixed in the wall body of narrow door or narrow window, be equipped with adjusting screw 13 and fastening bolt 12 between the last vertical section of two mountings, screw hole threaded connection on adjusting screw and the mounting adjusts according to the wall body thickness of narrow door or narrow window, adjusts the back centre gripping after accomplishing on the wall body of narrow door or narrow window, fixes through fastening bolt.
The high-voltage lead is internally sleeved on the shielding tube 1, a step part is arranged on the side, close to the insulating tube, of the connecting rod, and the end face of the shielding tube is abutted to the step part of the connecting rod. The end of the insulating tube is connected with a shield 3 which shields the high voltage lead wire and the end of the shield tube therein. The shield case 3 has an effect of homogenizing the electric field and preventing discharge.
It will be appreciated by those skilled in the art that the insulating gas is sulfur hexafluoride, but other common insulating gases may be selected. The electric field stress control unit is made of copper to form a shell structure.
After the position of a narrow door and a narrow window of a test path through which the high-voltage lead needs to pass is determined, adjusting the adjusting screw rod, screwing the fastening bolt to fix the fixing frame on the wall body of the narrow door or the narrow window, and arranging and fixing the stress control unit part of the repairable line crossing device above the fixing frame.
The whole guide rod is formed by the guide rod A and the guide rod B inside the device, the guide rod A and the guide rod B are connected with the high-voltage leads on two sides through the connectors, the electric current and voltage applying effects are achieved, the electric field stress control unit homogenizes and controls the electric field between the guide rod and the guide rod, all voltage is borne by filled insulating gas, the electric field distribution between the high-voltage leads and doors and windows is changed, and air breakdown caused by insufficient distance is avoided.
The left side and the right side of the electric field stress control unit are insulating tubes made of insulating materials, and the insulating tubes are connected and fixed through fixing screws, so that the creepage distance between the electric field stress control unit and the connecting rod can be increased, and flashover discharge breakdown is avoided.
Install the shield cover at insulating tube end, with high voltage lead and shield tube parcel inside the shield cover during the experiment, have about the homogenization electric field, avoid the effect of discharging.
Because connect the high-voltage lead at device both ends and test, avoid the high-voltage lead to directly pass the narrow window, can solve during the test high-voltage lead can't directly pass the narrow window, accomplish the experiment for the indoor product of transformer substation and provide an effective convenient test method for it is more convenient to test, also the effectual work efficiency that has improved simultaneously.
Insulating gas is filled in the device, if the device is subjected to internal breakdown due to overvoltage in a test, the insulating property can be recovered only by standing for a moment, repeated disassembly and repeated installation are avoided, and the risk of insulation breakdown and electric leakage does not exist.
Before the first use, the appearance of the equipment (the tightness degree of a bolt) is checked, the equipment is vacuumized, a vacuum pump is connected, a pressure valve is opened, the internal atmospheric pressure of the device reaches-0.1 Pam, the pressure valve is closed, the device is kept stand for half an hour to check the air tightness, and then different atmospheric pressures, 0.25Pam of sulfur hexafluoride and 0.35Pam of mixed gas nitrogen are filled according to the used insulating gas. After the specified pressure was reached, the pressure valve was closed, allowed to stand for 12 hours, and the airtightness was checked.
When the shielding cover is used, the shielding cover is firstly installed on the insulating pipe, the fixing frame is installed on a door or a window which needs to penetrate, the electric field stress control unit is erected on the fixing frame, the vacuum pressure gauge and the pressure valve on the electric field stress control unit are reliably grounded through the annealed copper wires, and then the insulated copper wires can be used as normal wires.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (6)
1. A repairable test flying lead device, comprising:
fixing a frame: the fixed frame is fixed on the wall body of the narrow door or the narrow window;
electric field stress control unit: the electric field stress control unit is connected with the fixing frame and is provided with an inner cavity;
insulating tube: the device is provided with two insulating tubes, wherein the two insulating tubes are respectively connected to two sides of an electric field stress control unit and are mutually communicated, insulating gas is filled in the insulating tubes, the end parts of the insulating tubes are connected with connecting rods, the connecting rods are provided with connectors, and the two connectors are respectively connected with high-voltage lead wires on two sides of a wall body of a narrow door or a narrow window;
a guide rod: the electric field stress control device is formed by butt joint of a guide rod A and a guide rod B, wherein the guide rod A and the guide rod B correspondingly penetrate through two insulating tubes on two sides of an electric field stress control unit, butt joint ends are located in an inner cavity of the electric field stress control unit, and the other ends of the guide rod A and the guide rod B are correspondingly connected with two connecting rods.
2. The repairable test flying lead device of claim 1, wherein: the insulating tube is connected with the electric field stress control unit by adopting a fixing screw.
3. The repairable test flying lead device of claim 1, wherein: and the electric field stress control unit is provided with a vacuum pressure gauge and a pressure valve.
4. The repairable test flying lead device of claim 1, wherein: the fixing frame comprises two split fixing pieces, each fixing piece comprises a horizontal extension section, an upper vertical section extending upwards and vertically from one end of the horizontal extension section, and a lower vertical section extending downwards and vertically from the other end of the horizontal extension section, the lower vertical sections of the two fixing pieces are clamped and fixed on a wall body of a narrow door or a narrow window, and an adjusting screw and a fastening bolt are arranged between the upper vertical sections of the two fixing pieces.
5. The repairable test flying lead device of claim 1, wherein: the high-voltage lead is sleeved in the shielding tube, and the shielding tube is connected with the connecting rod.
6. The repairable test flying lead device of claim 5, wherein: the end part of the insulating tube is connected with a shielding case which shields the high-voltage lead wire and the end part of the shielding tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120027257.1U CN214427557U (en) | 2021-01-06 | 2021-01-06 | Repairable experimental overline device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120027257.1U CN214427557U (en) | 2021-01-06 | 2021-01-06 | Repairable experimental overline device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214427557U true CN214427557U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120027257.1U Active CN214427557U (en) | 2021-01-06 | 2021-01-06 | Repairable experimental overline device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214427557U (en) |
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2021
- 2021-01-06 CN CN202120027257.1U patent/CN214427557U/en active Active
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