CN111697487B - Pressure-measurable live replacement device for double insulator strings and operation method - Google Patents
Pressure-measurable live replacement device for double insulator strings and operation method Download PDFInfo
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- CN111697487B CN111697487B CN202010650151.7A CN202010650151A CN111697487B CN 111697487 B CN111697487 B CN 111697487B CN 202010650151 A CN202010650151 A CN 202010650151A CN 111697487 B CN111697487 B CN 111697487B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/047—Specific indicating or recording arrangements, e.g. for remote indication, for indicating overload or underload
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Abstract
本发明涉及一种可测压式带电更换双联绝缘子串装置及作业方法，该装置包括压力传感器数显丝杆、长度可调式绝缘拉棒和叉型卡具，所述压力传感器数显丝杆包括直线丝杆、丝杆支座、压力传感器、控制单元和显示单元，所述直线丝杆的丝杆下端与绝缘拉棒上端连接，所述直线丝杆的螺母座经压力传感器安装于丝杆支座上，所述丝杆支座为横担卡结构，所述压力传感器连接控制单元，所述控制单元连接显示单元；所述叉型卡具上端与绝缘拉棒下端连接，所述叉型卡具下端的两个卡具上设有用于连接三角联板的插销。该装置及作业方法有利于便捷、安全、高效地进行地电位带电更换双联悬垂绝缘子串。
The present invention relates to a pressure-measurable live replacement device for a double-insulator string and an operation method. The device comprises a pressure sensor digital display lead screw, a length-adjustable insulating rod and a fork-shaped fixture. The pressure sensor digital display lead screw comprises a linear lead screw, a lead screw support, a pressure sensor, a control unit and a display unit. The lead screw lower end of the linear lead screw is connected to the upper end of the insulating rod, and the nut seat of the linear lead screw is installed on the lead screw support via a pressure sensor. The lead screw support is a cross arm clamp structure. The pressure sensor is connected to the control unit, and the control unit is connected to the display unit. The upper end of the fork-shaped fixture is connected to the lower end of the insulating rod, and two fixtures at the lower end of the fork-shaped fixture are provided with a pin for connecting a delta connecting plate. The device and the operation method are conducive to convenient, safe and efficient live replacement of a double-insulated suspension insulator string at ground potential.
Description
Technical Field
The invention belongs to the field of electric power operation tools and instruments, and particularly relates to a device capable of measuring pressure and replacing a duplex insulator string in an electrified mode and an operation method.
Background
In recent years, with further improvement of the design standard of a transmission line, the structural form of a transmission line tower is more diversified, the existing working tool for live replacement of the strain insulator string of the tangent tower has the following defects that 1, a large number of tools are needed, the working labor intensity on the tower is high, 2, wire metal double hooks used in the working are long (reaching 400-600 mm), too many insulators are short-circuited during assembly, certain potential safety hazards exist, 3, as the double-hanging-point insulator string is lifted by the wires, the triangular yoke plate sags to a deflection state under the action of gravity, the bulb entering and exiting of the bowl head of the insulator becomes extremely difficult due to the gravity, 4, the wires are easy to wear when the double-hook hardware is lifted, 5, the wire load of the line tower with large span, large span and large height difference is not estimated, and the tightening stroke of the wire tightening screw is large, so that the situation of the live replacement is sometimes caused.
Disclosure of Invention
The invention aims to provide a pressure-measuring type live-line replacement duplex suspension insulator string device and an operation method.
The pressure-measuring type live-line replacement duplex insulator string device comprises a pressure sensor digital display screw rod, a length-adjustable insulation pull rod and a fork-shaped clamp, wherein the pressure sensor digital display screw rod comprises a linear screw rod, a screw rod support, a pressure sensor, a control unit and a display unit, the screw rod lower end of the linear screw rod is connected with the upper end of the insulation pull rod, a nut seat of the linear screw rod is arranged on the screw rod support through the pressure sensor, the screw rod support is of a cross arm clamp structure, the pressure sensor is connected with the control unit, the control unit is connected with the display unit, the upper end of the fork-shaped clamp is connected with the lower end of the insulation pull rod, and bolts for connecting a triangular connecting plate are arranged on two clamps at the lower end of the fork-shaped clamp.
Further, the pressure sensor is a cylindrical pressure sensor, and the nut seat is connected with the pressure sensor through a pressure bearing.
Further, the control unit is provided with a wireless communication module, so that wireless connection is established between the control unit and an external terminal or system through the wireless communication module, and data is transmitted.
Further, the outer side of the nut seat is connected with a metal transverse rocker.
Further, the length-adjustable insulating pull rod comprises a hollow sleeve, an upper connecting rod and a lower connecting rod, wherein the lower section of the upper connecting rod and the upper section of the lower connecting rod are respectively arranged in the hollow sleeve in a penetrating mode and can stretch up and down, the upper end of the upper connecting rod is connected with a screw rod of the linear screw rod, and the lower end of the lower connecting rod is connected with a fork-shaped clamp.
Further, a plurality of equidistant locating holes are respectively arranged on the lower section of the upper connecting rod and the upper section of the lower connecting rod along the length direction, and a plurality of locating holes are correspondingly arranged on the hollow sleeve along the length direction, so that when the upper connecting rod and the lower connecting rod are telescopically adjusted to the required length relative to the hollow sleeve, the upper connecting rod and the lower connecting rod pass through the locating holes which are overlapped inside and outside through high-strength bolts and are fixed through high-strength nuts, and the length locating of the insulating pull rod is realized.
Further, fork type fixture includes bar connecting portion, transverse connection portion and two fixtures, bar connecting portion upper end and insulating bar lower extreme threaded connection, bar connecting portion lower extreme and transverse connection portion middle part fixed connection, two fixture upper ends rotate with transverse connection portion left and right sides portion respectively and are connected to adjust the fork angle that two fixtures become, make fork type fixture be applicable to the triangle yoke plate of different models, the fixture lower extreme is equipped with the bolt, in order to insert in the preformed hole of triangle yoke plate, realizes the connection of fork type fixture and triangle yoke plate.
The invention also provides an operation method for the live replacement of the duplex insulator string capable of measuring the pressure, which comprises the following steps:
1) The operator climbs the tower to the cross arm position, and ground personnel lifts the device to the tower;
2) The operator adjusts the length of the length-adjustable insulating pull rod to enable the length-adjustable insulating pull rod to be matched with the insulator string;
3) The screw rod support is clamped on the cross arm, and the fork angle formed by the two clamps at the lower end of the fork-shaped clamp is remotely adjusted through the insulating operating rod, so that the bolt on the clamp is inserted into the reserved hole of the triangular yoke plate;
4) The operator tightens up the straight line lead screw and observes the pressure value that the display element shows, promotes the wire in the load allowed range, makes suspension insulator chain lax to realize earth potential live change pair suspension insulator chain.
Compared with the prior art, the invention has the advantages that the pressure sensor digital display screw rod, the length-adjustable insulating pull rod and the fork-shaped fixture are arranged on the device, so that tools and tools required by an operation flow are reduced, the damage to wires by traditional metal double hooks is avoided, the device can be used for simply, conveniently and efficiently replacing the double-connection suspension insulator string on the transmission line by ground potential electrification, the bearing load in the operation process can be monitored in real time, and the problems of high labor intensity, low safety coefficient, low working efficiency and the like in the prior operation are solved. Therefore, the invention has strong practicability and wide application prospect.
Drawings
Fig. 1 is a schematic view of the overall structure of an apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a digital display screw of a pressure sensor in an embodiment of the invention.
Fig. 3 is a schematic structural view of a fork-type fixture according to an embodiment of the present invention.
Fig. 4 is a schematic view of the working state of the device according to the embodiment of the present invention.
In the figure, a 1-pressure sensor digital display screw rod, a 2-length adjustable insulating pull rod, a 3-fork fixture, a 4-cylindrical pressure sensor, a 5-display unit, a 6-screw rod support, a 7-tangent tower cross arm, an 8-duplex suspension insulator string, a 9-triangle yoke plate, a 10-duplex suspension clamp, an 11-duplex split wire, a 12-control unit, a 13-screw rod, a 14-nut seat, a 15-pressure bearing, a 16-metal transverse rocker, a 21-upper connecting rod, a 22-hollow sleeve, a 23-lower connecting rod, a 24-positioning hole, a 25-high-strength bolt, a 31-pull rod connecting part, a 32-transverse connecting part, a 33-fixture and a 34-bolt are shown.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
The invention provides a pressure-measuring type live-line replacement duplex insulator string device, which is shown in figures 1-4 and comprises a pressure sensor digital display screw rod 1, a length-adjustable insulating pull rod 2 and a fork-shaped clamp 3.
The pressure sensor digital display screw 1 comprises a linear screw, a screw support 6, a pressure sensor 4, a control unit 12 and a display unit 5, wherein the lower end of a screw 13 of the linear screw is rotationally connected with the upper end of an insulating pull rod 2, a nut seat 14 of the linear screw is arranged on the screw support 6 through the pressure sensor 4, the screw support 6 is of a cross arm clamping structure so as to be clamped on a cross arm during operation, the pressure sensor 4 is connected with the control unit 12, and the control unit 12 is connected with the display unit 5.
In the embodiment, the linear screw rod adopts a reinforced torsion-resistant labor-saving linear screw rod, the material of the linear screw rod is 60Si2Mn, the yield strength is more than 800MPa, and the strength requirement of the screw rod when stressed can be completely met. The pressure sensor 4 adopts a cylindrical pressure sensor, a pressure bearing is arranged at the stress part, and the nut seat 14 is connected with the pressure sensor 4 through the pressure bearing 15. The outer side of the nut seat 14 is connected with a metal transverse rocker 16. The screw rod support is designed according to a cross arm clamping structure, and is made of LC4.c.s material, and the yield strength is greater than 400MPa. The display unit is chargeable, and the measuring range is 0-50KN. To facilitate remote monitoring of the load during operation, the control unit 12 may be provided with a wireless communication module, so as to establish a wireless connection with an external terminal or system and transmit data through the wireless communication module. The wireless communication can adopt communication modes such as Bluetooth, WIFI and the like.
The length-adjustable insulating pull rod 2 comprises a hollow sleeve 22, an upper connecting rod 21 and a lower connecting rod 23, wherein the lower section of the upper connecting rod 21 and the upper section of the lower connecting rod 23 are respectively arranged in the hollow sleeve 22 in a penetrating manner and can stretch up and down, the upper end of the upper connecting rod 21 is connected with a screw rod 13 of a linear screw rod, and the lower end of the lower connecting rod 23 is connected with a fork-shaped fixture 3. The lower section of the upper connecting rod 21 and the upper section of the lower connecting rod 23 are respectively provided with a plurality of equidistant positioning holes 24 along the length direction, and the hollow sleeve 22 is correspondingly provided with a plurality of positioning holes along the length direction, so that when the upper connecting rod 21 and the lower connecting rod 23 are telescopically adjusted to the required length relative to the hollow sleeve 22, the length positioning of the insulating pull rod is realized by penetrating the positioning holes which are internally and externally overlapped through the high-strength bolts 25 and fixing the positioning holes through the high-strength nuts.
In the embodiment, the length-adjustable insulating pull rod 2 is made of a dampproof filling pipe material, accords with the regulations of JB/T8150.2 and IEC855, has the characteristics of high mechanical strength (# 32,20 tons), tensile strength, torsion resistance, adjustable length and the like, and has insulating performance enough to meet the requirements of live working.
The upper end of the fork-shaped clamp 3 is connected with the lower end of the insulating pull rod 2, and the two clamps at the lower end of the fork-shaped clamp 3 are provided with bolts for connecting the triangular yoke plates. In this embodiment, the fork-shaped fixture is an adjustable fork-shaped fixture, and comprises a pull rod connecting portion 31, a transverse connecting portion 32 and two fixtures 33, wherein the upper end of the pull rod connecting portion 31 is in threaded connection with the lower end of the insulating pull rod 2, the lower end of the pull rod connecting portion 31 is fixedly connected with the middle of the transverse connecting portion 32, the upper ends of the two fixtures 33 are respectively and rotatably connected with the left side portion and the right side portion of the transverse connecting portion 32, so as to adjust the fork angle formed by the two fixtures, the fork-shaped fixture is suitable for triangle yoke plates of different types, and the lower end of the fixture 33 is provided with a bolt 34 so as to be inserted into a reserved hole of the triangle yoke plate 9, so that the connection between the fork-shaped fixture 3 and the triangle yoke plate 9 is realized. The fork-shaped fixture is made of super-hard aluminum alloy LC4.c.s.
The invention also provides an operation method for replacing the duplex insulator string by utilizing the device in an electrified way, which comprises the following steps:
1) The operator climbs the tower to the position of the cross arm 7, and the ground operator lifts the device to the tower;
2) The operator adjusts the length of the length-adjustable insulating pull rod 2 to be matched with the insulator string 8;
3) The screw rod support 6 is clamped on the cross arm, and the fork angle formed by the two clamps 33 at the lower end of the fork-shaped clamp 3 is remotely adjusted through the insulating operating rod, so that the bolt 34 on the clamp 33 is inserted into the reserved hole of the triangular yoke plate 9;
4) The operator tightens up the linear screw rod 1 and observes the pressure value that the display unit 5 shows, promotes wire 11 in the load allowable range, makes suspension insulator chain 8 lax to realize earth potential live replacement duplex suspension insulator chain.
In the device, the pressure sensor digital display screw rod can intuitively display the lifting load in real time and can conveniently receive and monitor the lifting load at ground terminal equipment through wireless transmission. The design of fork type fixture replaces traditional metal double hook to through the fork angle of two fixtures of remote operation, make fork type fixture be applicable to different model triangle yoke plates. The application of the fork-shaped clamp effectively avoids the damage of the traditional metal double hooks to the lead, meanwhile, the total length of the hardware fitting at the connecting part of the fork-shaped clamp and the pull rod is about 200mm, and the potential safety hazard problem caused by the fact that the double hooks of the hardware fitting short-circuit excessive insulators in the lifting and installing processes in the traditional mode is avoided. The whole set of operation flow requires fewer tools and instruments, the triangle yoke plate can be always guaranteed to be in a stressed state by adopting the fork-shaped clamp, the screw rod can relax the insulator string only by lifting by 3-5 cm, and the operation difficulty of the first insulator on the wire side in and out of the bowl head is greatly reduced.
The above is a preferred embodiment of the present invention, and all changes made according to the technical solution of the present invention belong to the protection scope of the present invention when the generated functional effects do not exceed the scope of the technical solution of the present invention.
Claims (7)
1. The pressure-measuring type live-line replacement duplex insulator string device is characterized by comprising a pressure sensor digital display screw rod, a length-adjustable insulating pull rod and a fork-shaped clamp, wherein the pressure sensor digital display screw rod comprises a linear screw rod, a screw rod support, a pressure sensor, a control unit and a display unit, the lower end of the screw rod of the linear screw rod is connected with the upper end of the insulating pull rod, a nut seat of the linear screw rod is arranged on the screw rod support through the pressure sensor, the screw rod support is of a cross arm clamp structure, the pressure sensor is connected with the control unit, the control unit is connected with the display unit, the upper end of the fork-shaped clamp is connected with the lower end of the insulating pull rod, and two clamps at the lower end of the fork-shaped clamp are provided with bolts for connecting a triangular yoke plate;
The fork-shaped clamp comprises a pull rod connecting part, a transverse connecting part and two clamps, wherein the upper end of the pull rod connecting part is in threaded connection with the lower end of an insulating pull rod, the lower end of the pull rod connecting part is fixedly connected with the middle part of the transverse connecting part, the upper ends of the two clamps are respectively connected with the left side part and the right side part of the transverse connecting part in a rotating manner, so that fork angles formed by the two clamps are adjusted, the fork-shaped clamp is applicable to triangular yoke plates of different types, and the lower end of the clamp is provided with a bolt to be inserted into a reserved hole of the triangular yoke plate, and the connection of the fork-shaped clamp and the triangular yoke plate is realized.
2. The pressure-measurable live replacement duplex insulator string device of claim 1, wherein the pressure sensor is a cylindrical pressure sensor, and the nut seat is connected with the pressure sensor through a pressure bearing.
3. The pressure-measuring live-line replacement duplex insulator string device according to claim 1, wherein the control unit is provided with a wireless communication module, so as to establish wireless connection with an external terminal or system through the wireless communication module and transmit data.
4. The pressure-measuring live replacement duplex insulator string device according to claim 1, wherein the outer side of the nut seat is connected with a metal transverse rocker.
5. The pressure-measuring live-line replacement duplex insulator string device according to claim 1, wherein the length-adjustable insulating pull rod comprises a hollow sleeve, an upper connecting rod and a lower connecting rod, the lower section of the upper connecting rod and the upper section of the lower connecting rod are respectively arranged in the hollow sleeve in a penetrating manner and can stretch up and down, the upper end of the upper connecting rod is connected with a screw rod of a linear screw rod, and the lower end of the lower connecting rod is connected with a fork-shaped clamp.
6. The pressure-measuring live-line replacement duplex insulator string device according to claim 5, wherein a plurality of equidistant positioning holes are respectively formed in the lower section of the upper connecting rod and the upper section of the lower connecting rod along the length direction, and a plurality of positioning holes are correspondingly formed in the hollow sleeve along the length direction, so that when the upper connecting rod and the lower connecting rod are telescopically adjusted to a required length relative to the hollow sleeve, the length positioning of the insulating pull rod is realized by penetrating the inner and outer coincident positioning holes through high-strength bolts and fixing the high-strength nuts.
7. The operation method of the pressure-measuring type live-wire replacement duplex insulator string is applied to the pressure-measuring type live-wire replacement duplex insulator string device of claim 1, and comprises the following steps:
1) The operator climbs the tower to the cross arm position, and ground personnel lifts the pressure-measurable live-line replacement duplex insulator string device to the tower;
2) The operator adjusts the length of the length-adjustable insulating pull rod to enable the length-adjustable insulating pull rod to be matched with the insulator string;
3) The screw rod support is clamped on the cross arm, and the fork angle formed by the two clamps at the lower end of the fork-shaped clamp is remotely adjusted through the insulating operating rod, so that the bolt on the clamp is inserted into the reserved hole of the triangular yoke plate;
4) The operator tightens up the straight line lead screw and observes the pressure value that the display element shows, promotes the wire in the load allowed range, makes suspension insulator chain lax to realize earth potential live change pair suspension insulator chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650151.7A CN111697487B (en) | 2020-07-08 | 2020-07-08 | Pressure-measurable live replacement device for double insulator strings and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650151.7A CN111697487B (en) | 2020-07-08 | 2020-07-08 | Pressure-measurable live replacement device for double insulator strings and operation method |
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| CN111697487A CN111697487A (en) | 2020-09-22 |
| CN111697487B true CN111697487B (en) | 2025-03-04 |
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| CN202010650151.7A Active CN111697487B (en) | 2020-07-08 | 2020-07-08 | Pressure-measurable live replacement device for double insulator strings and operation method |
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| CN112366590B (en) * | 2020-10-30 | 2022-03-01 | 国网山东省电力公司青岛供电公司 | Replacing tool and replacing method for replacing horizontally-arranged strain pole cross arm in electrified mode |
| CN114123027B (en) * | 2021-11-24 | 2024-03-01 | 国网江苏省电力有限公司检修分公司 | A linear double I string fixture for steel pipe towers and its operating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212435212U (en) * | 2020-07-08 | 2021-01-29 | 国网福建省电力有限公司 | Pressure-measurable live replacement double insulator string device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102208776B (en) * | 2011-03-22 | 2013-05-01 | 国家电网公司 | Working tool for live-line replacement of insulator chain of triangle link plate hanging point type and working method thereof |
| CN105932599A (en) * | 2016-06-17 | 2016-09-07 | 国网湖南省电力公司带电作业中心 | Tool set capable of replacing insulator chain of ultra-high-voltage transmission line under electrified state and use method for tool set |
| CN106300138A (en) * | 2016-10-27 | 2017-01-04 | 国网浙江省电力公司绍兴供电公司 | A kind of fixture of live-line replacing strain single insulator |
| CN210201322U (en) * | 2019-05-13 | 2020-03-27 | 中国南方电网有限责任公司超高压输电公司广州局 | Prevent that insulator from falling string intelligence and reminding fixture |
| CN110992789A (en) * | 2019-11-19 | 2020-04-10 | 宁海县雁苍山电力建设有限公司 | A training device for live replacement of tensile rod insulator strings |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212435212U (en) * | 2020-07-08 | 2021-01-29 | 国网福建省电力有限公司 | Pressure-measurable live replacement double insulator string device |
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