CN210349469U - Transmission line support insulator gold utensil end - Google Patents
Transmission line support insulator gold utensil end Download PDFInfo
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- CN210349469U CN210349469U CN201921312320.5U CN201921312320U CN210349469U CN 210349469 U CN210349469 U CN 210349469U CN 201921312320 U CN201921312320 U CN 201921312320U CN 210349469 U CN210349469 U CN 210349469U
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- 229910052737 gold Inorganic materials 0.000 title claims abstract description 12
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model provides a transmission line support insulator gold utensil end, concretely relates to transmission line support equipment technical field, its structure is: constitute by gold utensil end, connecting bolt, connecting hole, fixation nut, the beneficial effects of the utility model reside in that: the utility model discloses the operation is overhauld with linking to the fixed of applicable single wire, two split conductor, possesses the commonality of transmission line, just the utility model discloses can be applicable to various suspension clamp and link fitting according to the difference in wire cross-section, make transmission line single wire, two split conductor support insulator's installation and dismantlement convenient operation, simple, swift. The utility model discloses through bulk strength check-up and mechanical strength test, and through field test many times, security and stability obtain guaranteeing, eliminate transmission line tripping hidden danger from multiple factors, have improved the reliability of circuit, have reduced the stable harmful factor of influence transmission system, the effectual power supply accident of having avoided the circuit to have a power failure to arouse.
Description
Technical Field
The utility model relates to a transmission line support equipment technical field, concretely relates to transmission line support insulator gold utensil end.
Background
The transmission line is a vascular life line of a power enterprise, and the quality of management of the transmission line directly influences the safety and stable operation of a power grid, the reputation and the benefit of the power enterprise, and the normal power supply of users. High tension overhead transmission line distributes and opens wide field, not only receives the control of equipment self change law, often receives the influence that ambient environment and nature change moreover, therefore equipment is in service, and all kinds of defect problems often appear in the wire, if the influence tripping operation of three-phase wire receiving the strong wind, influence the power supply reliability of circuit. In order to ensure the continuity and reliability of power supply of the power transmission line, the power transmission line needs to be processed in time. However, due to the limited processing means, the defect eliminating operation of the wires takes a large amount of overhaul time and labor, and support insulators with different hardware fitting ends are selected according to the operation environment of the power transmission line and the cross sections of the wires during overhaul, so that great difficulty is brought to the overhaul work of the power transmission line.
SUMMERY OF THE UTILITY MODEL
To the problem that exists in the above-mentioned technique, the utility model provides a transmission line support insulator gold utensil end, its structure is: one end of the hardware fitting end (2) is U-shaped, a connecting hole (5) is formed in the U-shape, and the connector (6) is movably connected with the connecting hole (5) through a connecting bolt (4) and a fixing nut (3); the other end of the hardware fitting end (2) is provided with threads and is fixedly connected with the bearing rod core (1).
The connector (6) adopts a ship-shaped wire clamp, a ball head hanging ring, a U-shaped hanging ring and a connector of a single-link bowl head.
The bearing rod core (1) is a glass rod formed by bonding millions of glass fibers with resin and arranging the glass fibers in parallel along the axis, and the tensile strength of the glass rod core is higher than 600 MPa.
The utility model discloses a use method does:
the hardware end is fixedly connected to the force bearing rod core, when the support insulator is used, the support insulator with the proper length and the proper connecting wire clamp is selected according to the operating environment of a power transmission line and the cross section of a wire, and then the support insulator is additionally arranged between the wire phases and the ground wire through the connecting joint of the hardware end.
The beneficial effects of the utility model reside in that:
the utility model discloses the operation is overhauld with linking to the fixed of applicable single wire, two split conductor, possesses the commonality of transmission line, just the utility model discloses can be applicable to various suspension clamp and link fitting according to the difference in wire cross-section, make transmission line single wire, two split conductor support insulator's installation and dismantlement convenient operation, simple, swift. The utility model discloses through bulk strength check-up and mechanical strength test, satisfy "national grid routine instrument is experimental" standard, and through field test many times, security and stability obtain guaranteeing, eliminate transmission line tripping hidden danger from multiple factors, have improved the reliability of circuit, have reduced the bad factor that influences the stability of transmission system, the effectual power supply accident who has avoided the circuit to have a power failure to arouse.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention
FIG. 2 is a schematic view of the connection structure of the present invention
The device comprises a force bearing rod core 1, a force bearing rod core 2, a hardware fitting end 3, a fixing nut 4, a connecting bolt 5, a connecting hole 6 and a connector.
Detailed Description
Example 1: the utility model provides a transmission line support insulator gold utensil end, its structure is: one end of the hardware fitting end (2) is U-shaped, a connecting hole (5) is formed in the U-shape, and the connector (6) is movably connected with the connecting hole (5) through a connecting bolt (4) and a fixing nut (3); the other end of the hardware fitting end (2) is provided with threads and is fixedly connected with the bearing rod core (1).
The connector (6) adopts a ship-shaped wire clamp connector.
The bearing rod core (1) is a glass rod formed by bonding millions of glass fibers with resin and arranging the glass fibers in parallel along the axis, and the tensile strength of the glass rod core is higher than 600 MPa.
The hardware end is fixedly connected to the force bearing rod core, when the support insulator is used, the support insulator with the proper length and the proper connecting wire clamp is selected according to the operating environment of a power transmission line and the cross section of a wire, and then the support insulator is additionally arranged between the wire phases and the ground wire through the connecting joint of the hardware end.
Example 2: the utility model provides a transmission line support insulator gold utensil end, its structure is: one end of the hardware fitting end (2) is U-shaped, a connecting hole (5) is formed in the U-shape, and the connector (6) is movably connected with the connecting hole (5) through a connecting bolt (4) and a fixing nut (3); the other end of the hardware fitting end (2) is provided with threads and is fixedly connected with the bearing rod core (1).
The connector (6) adopts a ball head hanging ring connector.
The bearing rod core (1) is a glass rod formed by bonding millions of glass fibers with resin and arranging the glass fibers in parallel along the axis, and the tensile strength of the glass rod core is higher than 600 MPa.
The hardware end is fixedly connected to the force bearing rod core, when the support insulator is used, the support insulator with the proper length and the proper connecting wire clamp is selected according to the operating environment of a power transmission line and the cross section of a wire, and then the support insulator is additionally arranged between the wire phases and the ground wire through the connecting joint of the hardware end.
Example 3: the utility model provides a transmission line support insulator gold utensil end, its structure is: one end of the hardware fitting end (2) is U-shaped, a connecting hole (5) is formed in the U-shape, and the connector (6) is movably connected with the connecting hole (5) through a connecting bolt (4) and a fixing nut (3); the other end of the hardware fitting end (2) is provided with threads and is fixedly connected with the bearing rod core (1).
The connector (6) adopts a U-shaped hanging ring connector.
The bearing rod core (1) is a glass rod formed by bonding millions of glass fibers with resin and arranging the glass fibers in parallel along the axis, and the tensile strength of the glass rod core is higher than 600 MPa.
The hardware end is fixedly connected to the force bearing rod core, when the support insulator is used, the support insulator with the proper length and the proper connecting wire clamp is selected according to the operating environment of a power transmission line and the cross section of a wire, and then the support insulator is additionally arranged between the wire phases and the ground wire through the connecting joint of the hardware end.
Example 4: the utility model provides a transmission line support insulator gold utensil end, its structure is: one end of the hardware fitting end (2) is U-shaped, a connecting hole (5) is formed in the U-shape, and the connector (6) is movably connected with the connecting hole (5) through a connecting bolt (4) and a fixing nut (3); the other end of the hardware fitting end (2) is provided with threads and is fixedly connected with the bearing rod core (1).
The connector (6) adopts a single-joint socket connector.
The bearing rod core (1) is a glass rod formed by bonding millions of glass fibers with resin and arranging the glass fibers in parallel along the axis, and the tensile strength of the glass rod core is higher than 600 MPa.
The hardware end is fixedly connected to the force bearing rod core, when the support insulator is used, the support insulator with the proper length and the proper connecting wire clamp is selected according to the operating environment of a power transmission line and the cross section of a wire, and then the support insulator is additionally arranged between the wire phases and the ground wire through the connecting joint of the hardware end.
Example 5:
the transmission line is the blood vessel life of electric power enterprise, the quality of its management, both direct influence the safety of electric wire netting, steady operation, reputation and the benefit of electric power enterprise, also influence the normal power supply to the user, high-voltage overhead transmission line distributes and is wide in the field, not only by the control of equipment self change law, and often receive the influence of surrounding environment and nature change, therefore equipment is in service, all kinds of defect problems often appear in the wire, if the three-phase wire is receiving the influence tripping operation of strong wind, influence the power supply reliability of circuit, for guaranteeing the continuity and the reliability of transmission line power supply, in time handle, but because the processing means is limited, the wire disappearance operation has taken a large amount of maintenance time and strength, bring very big difficulty for transmission line maintenance work.
For faults caused by wind damage to the power transmission line, the following three reasons are obtained through analysis:
1. wind damage fault analysis-planning design reason
When the lines are designed, the weather and micro-terrain microclimate conditions such as typhoons, squall winds and the like are not considered comprehensively, and collected meteorological data is incomplete, so that the wind deviation tripping is caused when the actual wind speed on site is greater than the designed wind speed.
The tower type and the electrical distance of part of old lines cannot meet the wind deflection prevention requirement.
2. Wind damage fault analysis-construction reason
The faults caused by construction reasons are mainly that the arc sag control of jumper wires, optical cables, ground wires and the like is not in place in the construction process, or loose-proof pins are absent in hardware fittings, bolts and the like, so that the wind deflection discharge is caused in the operation of a circuit.
3. Analysis of wind damage fault-reason of operation and maintenance
In operation and maintenance type windage yaw faults, most of the conductors discharge insufficient windage yaw distance of surrounding structures (buildings, street lamps, trees, side slopes and the like), and faults are caused because hidden troubles of the windage yaw of the lines are not found in time and treatment measures are taken.
The faults of the insulator and the hardware fitting and the damage faults of the tower are all that the operation and the maintenance are not in place, and the defects in operation are not found in time, so that the faults occur under the action of strong wind.
Aiming at the difficulty degree of processing the wind damage fault of the power transmission line caused by the three factors, the operation and maintenance division power transmission room of the State grid Xining Power supply company bears the research and application of the power transmission line supporting insulator. Because the distance between three-phase wires is different due to different span, tower type and erection mode of the power transmission line, the lengths of developed and processed supporting insulators are different.
The transmission line can meet a plurality of complex operation environments in the operation process, so that the support insulator has different installation modes in the complex operation environments, and the five conditions are as follows:
1. the installation mode between drainage wire and iron tower.
2. The mounting mode when the leads are arranged in a triangular mode.
3. The mounting mode when the wires are vertically arranged.
4. The wires are installed in a crossing manner.
5. The installation mode when the phase sequence of the incoming line gear lead changes.
And selecting a proper suspension clamp and a proper connecting hardware fitting according to different sections of the wires to mount the supporting insulator. The installation of the supporting insulator effectively eliminates the tripping hidden trouble of the power transmission line, thereby improving the reliability of the line and reducing the adverse factors influencing the stability of the system; the power supply accident caused by line power failure is effectively avoided.
The transmission line has wind damage fault, and there are two general situations:
(1) line-to-ground line discharge
The measures for treating the discharge between the ground wires mainly comprise the steps of reducing the span, additionally arranging phase-to-phase spacing rods, adjusting the circuit sag, reforming the tower head gap and the like.
1) And erecting a double-circuit line large span distance on the same pole, carrying out actual measurement sag, checking windage yaw interphase safety distance, and replacing different types and specifications of the wires with the same wire.
2) Dismantling a coupling ground wire for lightning protection in the coastal region; and (4) checking the safety distance of the gears with large span, carrying out depression reconstruction, reducing the span or adjusting the line sag and the like.
(2) The conductor discharges to the surrounding object
For the treatment of the discharge of the lead to the surrounding objects, the wind deflection angle of the lead or the jumper and the gap distance of the surrounding objects should be checked, the surrounding objects (trees and the like) which do not meet the checking condition are cleared, and the safety distance between the lead and the surrounding objects is ensured.
For the two fault conditions, the lead is replaced, the sag is closed, the line is heightened, and the line is moved and modified when the types of the leads are different, the distance between the leads and surrounding objects (hillsides) is too short, and the sag does not accord with the standard. Line relocation involves land acquisition, is now difficult, and requires redesign of routes and data collection. In general, the treatment measures are too costly and consume a large amount of manpower, material resources and financial resources.
The utility model discloses perfect solution the difficulty that meets in handling the wind damage trouble at present to the security of circuit, the stability of instrument, carry light, easy dismounting, flexible operation, have the commonality for the technical development direction, through design many times, manufacturing, field test, improvement, finally developed the support insulator of various length, improved transmission line's disappearance vacancy rate and disappearance efficiency.
The utility model discloses a main content is the development of the instrument and the method of handling the trouble that the wind damage caused, combines transmission line wire design and operation mode, adopts the wire looks, installs the support insulator of suitable length additional between the ground wire line, is connected with the ground wire through the gold utensil of supporting model. The connection has certain swing margin left, right, up and down, so that the connection is more reliable, and the operation is safe and long-lasting.
Integral design of support insulator
1. The support insulator is composed of an insulating umbrella disk, a bearing rod core and a hardware fitting end. The insulating umbrella disks are arranged at intervals by the umbrella disks with large and small diameters, so that the creepage distance is increased, the surface resistance is high, the leakage current is small, and the pollution flashover resistance is strong; the bearing rod core is made of glass fiber rod glass fiber reinforced plastics, so that the tensile strength is high, and the weight is light; the metal end is reasonable in design, is suitable for connection between LGJ-120 and LGJ-300 or GJ-70 ground wires by matching with different connecting hardware fittings, is convenient and firm to connect, has certain movement margin, and ensures safe and stable operation of a power transmission line after installation.
Design and installation of hardware fitting end
1. By researching the installation modes of the insulator and the wire under various conditions, the design of the double-lug connecting fitting for the end head of the insulator fitting is determined, and the double-lug connecting fitting can be stably and firmly connected with a ship-shaped wire clamp, a ball head hanging ring, a U-shaped hanging ring or a single-connection socket head and can be used under various connection conditions.
(III) Length design and safety analysis
Looking up drawing data of a 35kV-110kV transmission line straight line, strain, windage yaw prevention and post insulators to find the formed length of an insulator assembly drawing: 950 mm-2700 mm, the design length of the supporting insulator is 3000mm, 3500mm, 4000mm, 4500mm, 5000mm, 5500mm, 6000mm seven models, the shortest length according to design is 3000mm >2700mm, and there is a personnel overhaul range of motion of 300 mm.
Fourth, the technical route
According to various complex operating environments encountered by a power transmission line in the operating process, the safety distances between a ground wire and a lead and between the lead and a tower are calculated, the mounting mode of a supporting insulator is refined, and according to the field lead arrangement mode, the length and the mounting mode of the insulator are calculated according to the 110kV-750kV overhead power transmission line design specification (GB 50545-2010) and 8-lead arrangement) of a tower-shaped structure.
Fifth, safety of the supporting insulator
Creepage distance calculation
When a creepage ratio distance method is adopted, the number of the insulator pieces is calculated according to the following formula:
in the formula: n-the number of pieces required by each insulator when the altitude is 1000 m;
lambda-creepage specific distance (cm/kV);
u-system nominal voltage (kV);
L01-geometrical creepage distance (cm) of the monolithic suspension insulator;
Kethe effective coefficient of the creepage distance of the insulator is mainly determined by the effectiveness of the geometric creepage distance of various insulators in the test and the operation and is based on XP-70 and XP-160 insulators, and K of the insulators iseThe value is taken to be 1.
Taking an insulator with the structure height of 4000mm as an example, the creepage distance is calculated to meet the requirement.
(II) test report
After the tool is successfully developed, a large number of electrical and mechanical experiments are organized according to national grid power safety tool management regulations. The electric and mechanical tests prove that: the tool has reasonable design structure and qualified installation and debugging, and can meet the requirements of field operation on electricity and machinery.
Eighthly, achievement obtained by project
Safety: the electric coaster with single conductor and double split conductors of the power transmission line meets the standard of national power grid routine tool test after overall strength verification and mechanical strength test, and the safety and the stability are ensured after multiple field tests.
Universality: the transmission line supporting insulator can be suitable for fixing and linking single-conductor and double-split-conductor of 35kV-110kV LGJ-95/20-LGJ-400/50 mm2, and has universality of transmission line overhauling operation.
Convenience: the single-conductor and double-split-conductor support insulator of the power transmission line is convenient, simple and quick to mount, dismount and operate.
Economic benefits are as follows:
(1) according to the scheduling information and the calculation experience, the 110kV electricity transmission amount per hour is about 5 ten thousand degrees;
(2) the line inspection and rush repair time is at least 6 hours after the line is tripped, a new tool is put into use for 3 times, and the time is saved by 360 minutes each time;
(3) the integrated profit per degree of electricity is calculated as 0.5 yuan.
Economic benefit is saved by 5X 6X 0.5X 8 ═ 120 (ten thousand yuan)
The obtained results are as follows:
1: the hidden trouble of insufficient line-to-line distance is timely treated and rush-repaired;
2: the method has good prevention and treatment effects on the waving between the complex cross crossing point lead and the ground wire;
3: the problem of insufficient distance between the incoming line and the outgoing line of the transformer substation is solved;
4: the distance between the drainage and the tower is ensured;
5: the large-span and large-span lead has a fixing function, the safety distance between the leads is ensured, and the line tripping caused by the waving and whipping of the lead is prevented.
Claims (2)
1. The utility model provides a transmission line support insulator's gold utensil end which characterized in that: one end of the hardware fitting end (2) is U-shaped, a connecting hole (5) is formed in the U-shape, and the connector (6) is movably connected with the connecting hole (5) through a connecting bolt (4) and a fixing nut (3); the other end of the hardware fitting end (2) is provided with threads and is fixedly connected with the bearing rod core (1); the connector (6) adopts a ship-shaped wire clamp, a ball head hanging ring, a U-shaped hanging ring and a single-connection bowl head type connector.
2. The transmission line support insulator hardware end socket of claim 1, wherein: the bearing rod core (1) is a glass rod formed by bonding millions of glass fibers with resin and arranging the glass fibers in parallel along the axis, and the tensile strength of the glass rod core is higher than 600 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312320.5U CN210349469U (en) | 2019-08-14 | 2019-08-14 | Transmission line support insulator gold utensil end |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921312320.5U CN210349469U (en) | 2019-08-14 | 2019-08-14 | Transmission line support insulator gold utensil end |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364316A (en) * | 2019-08-14 | 2019-10-22 | 国网青海省电力公司西宁供电公司 | A kind of transmission line of electricity supporting insulator fitting end |
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2019
- 2019-08-14 CN CN201921312320.5U patent/CN210349469U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110364316A (en) * | 2019-08-14 | 2019-10-22 | 国网青海省电力公司西宁供电公司 | A kind of transmission line of electricity supporting insulator fitting end |
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