CN107946997A - A kind of insulating bar method on-load isolates the operational method of switch in replacing - Google Patents

Abstract

The invention relates to an operating method for on-load replacement of an isolating switch by an insulating rod method, which is widely used in the work of replacing an isolating switch by the ground potential method of an overhead power distribution line, and belongs to the technical field of on-site maintenance of power distribution lines. It includes the following steps: use the insulation operating rod to hang the lead wire shielding hanging plate on the side phase wire and the ball head of the insulator to complete the insulation shielding of the opposite side phase lead wire, use the insulation operating rod to hang the integrated shielding cover, and complete the opposite side phase tension Insulation and shielding of insulators, wire clips and some wires; disconnect the leads on both sides of the middle-phase isolating switch, and the middle-phase isolating switch is in a no-power state at this time, and the operator replaces a new isolating switch; The leads are connected to the main leads. This method does not require a power outage during operation, and it cooperates with a complete set of insulation shielding and protective equipment to insulate, shield and isolate the charged body and the grounded body, ensuring that the operator maintains a sufficient safe distance from the live equipment, and has a high safety factor.

Description

An operating method for replacing a medium-phase isolating switch with load by the insulating rod method

technical field

The invention relates to an operating method for on-load replacement of an isolating switch by an insulating rod method, which is widely used in the work of replacing an isolating switch by the ground potential method of an overhead power distribution line, and belongs to the technical field of on-site maintenance of power distribution lines.

Background technique

High-voltage isolating switch is widely used in 10KV power distribution lines, mainly used for "isolation of power supply, switching operation, connection and cut-off of small circuit current", without arc extinguishing function. Only when there is no load current, the circuit can be opened and closed, and the circuit can only be operated after disconnecting it with other equipment. Because of the wide range of applications, the common faults in the operation of the disconnector are: 1. The load is too heavy, and the contact resistance increases, causing the contact part to overheat; 2. Long-term operation of the porcelain insulation damage and flashover discharge; 3. Refusal to pull and close; 4. Wrong switch on.

A power outage to replace an isolating switch will inevitably interrupt the power supply in a certain area, affect the normal production and life of a large number of users, and reduce the reliability of power supply, which is extremely detrimental to improving quality service and user satisfaction.

At present, the work of replacing the isolating switch with load is mainly carried out through the intermediate potential operation method, that is, the operator wears an insulating helmet and a full set of insulating clothing, and operates the insulating bucket of the insulating bucket truck close to the working position for maintenance work. The replacement of the isolating switch by the intermediate potential operation method has the following disadvantages: 1. It depends on the terrain conditions, the terrain is rough, and the site is narrow and cannot meet the parking requirements of the vehicles; 2. The cost is high, and the cost of the insulated arm truck and the personnel expenditure are higher than that of the climbing pole operation; 3. 、Compared with the intermediate potential operation, the ground potential operation is mainly completed through the operating lever, which ensures the distance between the personnel and the electrified body, and has a high safety factor.

At present, there is an urgent need for an operating method for replacing the intermediate-phase isolating switch by the insulating rod method with load that can solve the above-mentioned technical problems.

Contents of the invention

The purpose of the present invention is to provide a working method for replacing the isolating switch with load that can be carried out at the ground potential. This method does not need to be powered off during operation, and it cooperates with a complete set of insulation and shielding protective equipment to insulate and isolate the charged body and the grounded body to ensure The operator keeps a sufficient safe distance from the live equipment, the operation is simple and the safety factor is high.

An operating method for replacing a neutral-phase isolating switch with load by the insulating rod method, which is special in that it includes the following steps:

1. Carry out an electrical test on the lines and devices, and proceed to the next step after the electrical test is qualified;

2. Install the ground potential block on the cross arm;

3. Install the pole shield to insulate and shield the pole;

4. Install isolation switch insulation partitions on the phases on both sides to insulate and shield the phase isolation switches on both sides;

5. Use the insulation operating rod to hang the lead wire shielding hanging plate 22 on the side phase wire and the ball head of the insulator to complete the insulation shielding of the opposite side phase lead wires, and use the insulation operating rod to hang the integrated shielding cover to complete the opposite side phase tension insulator , wire clips and insulation shielding of some wires (use four sets of shielding tools to complete the effective shielding of the live equipment on both sides of the cross arm on both sides);

6. Strip the insulation layer of the wire at 15-20cm outside the middle-phase wire clamp on both sides (the length of the stripped insulation layer should meet the length requirements of the installation of temporary drainage wire and fire wire clamp);

7. Use the insulated operating rod to install the temporary insulated drain wire synchronously, and bypass the neutral phase isolating switch;

8. Detect the current flow of the medium-phase temporary insulation drain wire, and after confirming that the shunt is good, pull the medium-phase isolating switch;

9. Disconnect the lead wires on both sides of the middle-phase isolating switch. At this time, the middle-phase isolating switch is in a state of no power, and the operator replaces a new isolating switch;

10. After the new isolating switch is installed and the pulling and closing tests pass, use the insulating operating rod to connect the leads on both sides of the isolating switch to the main lead;

11. Close the middle phase isolating switch, and after detecting that the flow of the middle phase isolating switch is good, use the insulating operating lever to remove the middle phase temporary insulating drain wire synchronously;

12. Use the insulating operating rod to remove the integrated shielding cover on both sides and the lead wire shielding hanging plate 22 in the reverse order of installation, and remove the insulating partition of the isolating switch, remove the pole shielding cover, and remove the ground potential block. The operation is over.

As a preferred technical solution of the present invention, the lead wire shielding hanging plate 22 is in a concave shape, and the two ends of the top of the lead wire shielding hanging plate 22 are respectively equipped with a hook body I23 connected to the insulator bowl head, and a hook body I23 connected to the wire. The hook body II 24 that is hooked, the lead wire shielding hanging plate 22 is equipped with a connector 26, the connecting head 26 is installed at the upper position of the lead wire shielding hanging plate 22 and is located at the middle position of the lead wire shielding hanging plate 22 in the length direction, the lead wire shielding hanging plate A handle groove 30 is provided above the connector 22, and the handle groove 30 is located directly above the connector 26;

As a preferred technical solution of the present invention, a connector I36 is installed on the outer wall of the integrated shielding cover, and the integrated shielding cover includes an insulator cover 31 covering the outside of the insulator and a wire cover 32 covering the outside of the wire, The bottom of the insulator cover 31 and the wire cover 32 are open and the two are integrated structures. One side of the insulator cover 31 is provided with a slot I33 that is engaged with the insulator bowl head, and one side of the wire cover 32 is provided. Conductor and the clamping slot II 34 that is clamped with the conductor, the cross section of the insulator cover 31 is n-shaped, the cross section of the conductor cover 32 is convex, the height of the insulator cover 31 is higher than the height of the conductor cover 32, and the height of the insulator cover 31 is The width matches the width of the bottom of the wire cover 32. Both the slot I33 and the slot II34 are in the shape of vertical strips. The top of the slot I33 is designed as an arc and the bottom is designed as a figure-eight. type, the bottom is designed as a figure-eight, and the top of the wire cover 32 is equipped with a handle 35;

As a preferred technical solution of the present invention, the connecting head 26 and the connecting head I36 are both T-shaped, including a horizontal mounting part 27, and a fixing part 28 perpendicular to it is installed on the horizontal mounting part 27, and the bottom of the fixing part 28 A plug connector 29 is installed, and a nail 25 is installed on the diameter direction of the fixing member 28, and the two ends of the nail 25 are located outside the fixing member 28;

As a preferred technical solution of the present invention, the insulating operating rod includes a metal head 4 plugged with the connector 26 or the connector I36, the metal head 4 is installed on the end of the insulating transmission rod 6, and the outside of the metal head 4 There is an intermediate ring 3 for fixing the connector 26 or the connector I36. The outer part of the intermediate ring 3 is provided with a lock ring 1 that can be lifted and lowered. Along the outer length direction of the insulating transmission rod 6, there is a phase rotation joint. The outer tube I12, the outer tube II13, the end of the outer tube II13 is fixed to the end of the insulating transmission rod 6;

As a preferred technical solution of the present invention, the metal head 4 includes a plug-in end 4-1 that is plugged in with the plug-in connector 29 and an installation end 4-2 installed on the insulating transmission rod 6. The plug-in end 4- 1 and the installation end 4-2 are integrally structured, and the outer diameter of the insertion end 4-1 is larger than the outer diameter of the installation end 4-2 so as to form a card platform I14 at the connection between the two;

As a preferred technical solution of the present invention, the intermediate ring 3 includes an end head 15, an intermediate sleeve 16, and a fixed pipe 17 sleeved on the outside of the metal head 4, and the end head 15, the intermediate sleeve 16, and the fixed pipe 17 are An integrated structure connected end to end, and the outer diameter and inner diameter of the three are successively reduced to form a card platform II18 at the junction of the end 15 and the outer wall of the intermediate sleeve 16, and at the junction of the inner wall of the intermediate sleeve 16 and the fixed pipe 17 Form card station Ⅲ19, and card station Ⅲ19 is connected with card station Ⅰ14;

As a preferred technical solution of the present invention, the fixed tube 17 is provided with a nail-piercing hole I5, the outer tube I12 is provided with a nail-piercing hole II10 used in conjunction with the nail-piercing hole I5, and the end of the outer tube II13 is provided with a nail-piercing hole II10. Nail hole III21, the end of the insulating transmission rod 6 is provided with a nail piercing hole IV8 used in conjunction with the nail piercing hole III21;

As a preferred technical solution of the present invention, the end 15 close to the power tool is provided with two hollow card slots 20, the two hollow card slots 20 are symmetrical with the central axis of the end 15 as the axis center, and the hollow card slots The slot 20 includes a vertical hollow slot 20-1 extending from the end of the head 15 close to the power tool to the middle of the end 15, a horizontal hollow slot 20-2 connected with the vertical hollow slot 21, and a horizontal hollow slot 20-2 The end is provided with an upwardly extending arc-shaped hollow groove 20-3;

As a preferred technical solution of the present invention, the intersection of the vertical hollow groove 20-1 and the horizontal hollow groove 20-2 is designed as a slope;

As a preferred technical solution of the present invention, the locking ring 1 includes a spring 9 partly arranged in the locking ring 1 and a bottom ring 2 against the tail of the spring 9, and the inner wall of the locking ring 1 is provided with a ring clip. Stage IV11, ring card stage IV11 is engaged with card stage II18, the inner diameter of ring card stage IV11 is smaller than the outer diameter of card stage II18, the top of one end of spring 9 is against the ring card stage IV11, and the other end is against the bottom ring 2 One side of the bottom ring 2 abuts against the outer tube I12.

The operating method of the insulating pole method of the present invention for replacing the middle-phase isolating switch with load, the improvement of the common intermediate potential operation lies in the change of the operating mode and the application of hard insulating shielding tools. Compared with the intermediate potential operation method, the insulating pole The main insulation of the method is changed from the insulation arm of the insulating bucket truck to the insulation operation rod, and the main insulation between the phases is still an air gap. The insulation rod method relies on the hard insulation shielding tool to realize the insulation isolation of the adjacent two-phase charged bodies, which plays a role in auxiliary insulation. In the process of insulating rod method, the key lies in the sequence of insulation shielding and the connection and removal of drain wires. With the special operation rod, it can conveniently and quickly realize the all-round shielding of the live body and the grounding body that may be touched. The insulating rod method of the present invention for replacing the middle-phase isolating switch with load has little restrictions on the working environment, and the working tools are convenient to carry and transport. The advantages of easy training and high safety factor help to expand the scope of live work, improve the reliability of the power grid, and ensure the normal use of electricity by users, which has great social benefits.

Description of drawings

Figure 1: Schematic diagram of the structure of the lead wire shielding hanging plate;

Figure 2: Schematic diagram of the structure of the insulating operating rod;

Figure 3: Schematic diagram of the installation sequence of the metal head, intermediate ring, locking ring, spring, and bottom ring on the insulating transmission rod;

Figure 4: Schematic diagram of the structure of the middle ring;

Figure 5: Schematic diagram of the structure of the metal head;

Figure 6: A schematic diagram of the structure in Figure 5;

Figure 7: Schematic diagram of the structure of the locking ring;

Figure 8: A schematic diagram of the cross-sectional structure of A-A in Figure 7;

Figure 9: Schematic diagram of the cooperation of locking ring, spring and bottom ring;

Figure 10: Schematic diagram of the installation structure of the lead wire shielding hanging plate;

Figure 11: Schematic diagram of the structure of the integrated shield;

Figure 12: A schematic diagram of the cross-sectional structure of A-A in Figure 11;

Figure 13: a schematic diagram of the B-B section structure of Figure 11;

Figure 14: Left view of Figure 11;

Figure 15: Right view of Figure 11;

Figure 16: Schematic diagram of the installation structure of the shield.

In the figure: 1. Locking ring; 2. Bottom ring; 3. Middle ring; 4. Metal head; 5. Nail piercing hole I; 6. Insulated transmission rod; 9. Cartridge III; 10. Nail piercing hole II; 11. Cartridge IV; 12. Outer tube I; 13. Outer tube II; 14. Cartridge I; 15. End; 16. Intermediate casing; 17. Fixing tube; 18, card table II; 19, card table III; 20, hollow card slot; 20-1, vertical hollow slot; 20-2, horizontal hollow slot; 20-3, arc hollow slot; 21, nail penetration Hole III; 22. Lead shielding hanging plate; 23. Hook body I; 24. Hook body II; 25. Nail penetration; 26. Connector; 27. Horizontal mounting piece; Handle slot; 31. Insulator cover; 32. Wire cover; 33. Card slot I; 34. Card slot II; 35. Handle; 36. Connector I.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

The working method of replacing the medium-phase isolating switch with load by the insulating rod method in this embodiment, referring to accompanying drawings 1-16, the tools used in the working method of replacing the medium-phase isolating switch with the load of the insulating rod method in this embodiment mainly include the following components :

Locking ring 1, bottom ring 2, middle ring 3, metal head 4, nail piercing hole Ⅰ5, insulating transmission rod 6, insulating connecting ring 7, nail piercing hole Ⅳ8, card table Ⅲ9, nail hole Ⅱ10, card table Ⅳ11, Outer tube Ⅰ12, outer tube Ⅱ13, card platform Ⅰ14, end 15, intermediate sleeve 16, fixed tube 17, card platform Ⅱ18, card platform Ⅲ19, hollow card slot 20, vertical hollow slot 20-1, horizontal hollow slot 20- 2. Arc-shaped hollow groove 20-3, nail penetration hole Ⅲ21, lead wire shielding hanging plate 22, hook body Ⅰ23, hook body Ⅱ24, nail penetration 25, connector 26, horizontal mounting piece 27, fixing piece 28, plug joint 29, Handle slot 30, insulator cover 31, wire cover 32, card slot I33, card slot II34, handle 35, connector I36.

The working method of replacing the medium-phase disconnector with load by the insulating rod method in this embodiment includes the following steps:

1) Work preparation: on-site re-survey, layout of the work site, implementation of the work permit system, on-site station shift meeting, testing of insulation tools, tension insulators and preparations before climbing poles;

2) Operator A on the pole climbs to the working position, conducts an electrical test on the lines and devices, and proceeds to the next step after the electrical test is passed;

3) Operator A on the pole installs the ground potential block on the cross arm with an insulating operating pole;

4) Operators A and B on the pole install the pole shielding cover to insulate and shield the pole;

5) Operators A and B on the pole cooperate to install two isolation switch insulation partitions to insulate and shield the phase isolation switches on both sides;

6) The operator on the pole uses the insulating operating rod to hang the lead wire shielding hanging plate on the side phase wire and the insulator ball head to complete the insulation shielding of the opposite side phase lead wire; use the insulating operating rod to hang the integrated shielding cover to complete the opposite side phase resistance Insulation shielding of insulators, clamps and some wires; (use four sets of shielding tools to complete the effective shielding of the live equipment on both sides of the phase cross arm)

7) Operators A and B on the pole cooperate with each other to peel off the insulation layer of the wire at 15cm outside the middle phase wire clip on both sides (the length of the insulation layer to be stripped off should meet the length requirements of the temporary drainage wire and the fire wire clip);

8) Two operators, A and B, use the multi-functional insulating operating rod to install the temporary insulating drain wire synchronously, and bypass the intermediate phase isolating switch;

9) The operator checks the flow of the medium-phase temporary insulated drain wire, and after confirming that the shunt is good, pulls the medium-phase isolation switch;

10) The operator cut off the lead wires on both sides of the middle-phase isolating switch with special-shaped insulating broken wires. At this time, the middle-phase isolating switch is in a state of no power, and the operator replaces a new isolating switch;

11) After the installation of the new isolating switch is completed and the pulling and closing tests pass, the operator on the pole uses a multi-function insulating operating rod to connect the leads on both sides of the isolating switch to the main lead.

12) The operator closes the middle-phase isolating switch, and after checking that the flow of the middle-phase isolating switch is good, the operator on the pole is in a suitable position, and uses the multi-functional insulating operating rod to simultaneously remove the middle-phase temporary insulated drain wire.

13) The operator on the pole uses the multi-function insulating operating pole to remove the integrated shielding cover and the lead wire shielding hanging plate on both sides in the reverse order of the installation, and remove the insulation partition of the isolation switch, remove the pole shielding cover, and remove the pulley. Leave the work area and the work is over.

14) At the end of the work, organize the tools and equipment and clean up the site, hold a closing meeting, and handle the work termination procedures.

Connection relationship: the lead wire shielding hanging plate 22 of the present embodiment has a height of 1.2 meters, a width of 0.9 meters, and a thickness of 4 millimeters. The lead wire shielding hanging plate is concave, and the top of the lead wire shielding hanging plate 22 is equipped with Connected hook body I 23, hook body II 24 connected with the wire, and a connector 26 is installed on the lead wire shielding hanging plate 22. Connected metal head 4, the metal head 4 is installed on the end of the insulating transmission rod 6, the outer part of the metal plug 4 is provided with an intermediate ring 3 for fixing the power tool, and the outer part of the intermediate ring 3 is provided with a lifting lock The ring 1 is provided with an outer tube I12 and an outer tube II13 which are screwed together along the outer length direction of the insulating transmission rod 6, and the end of the outer tube II13 is fixed to the end of the insulating transmission rod 6;

The integrated shielding cover of this embodiment includes an insulator outer cover 31 covering the outside of the insulator and a wire cover 32 covering the outside of the wire. One side of 31 is provided with a card slot I33 that is engaged with the insulator bowl, and one side of the wire cover 32 is provided with a card slot II34 for passing through the wire and snapping with the wire. The intersection of the insulator cover 31 and the wire cover 32 A connector I36 is installed on the outer wall of the connector, and the connector I36 is connected with a detachable insulating operating rod. The insulating operating rod includes a metal head 4 plugged with the connector 26, and the metal head 4 is installed on the end of the insulating transmission rod 6. The outer part of the metal head 4 is provided with an intermediate ring 3 for fixing the power tool. The outer part of the intermediate ring 3 is provided with a liftable locking ring 1 , and a phase rotation joint is provided along the outer length direction of the insulating transmission rod 6 . The outer tube I12, the outer tube II13, the end of the outer tube II13 is fixed to the end of the insulating transmission rod 6;

The lead wire shielding hanging plate 22 in this embodiment is in a concave shape, and the two ends of the top of the lead wire shielding hanging plate 22 are respectively installed with hook body I 23 and hook body II 24, and the connector 26 is installed on the upper position of the lead wire shielding hanging plate 22. and located in the middle of the length direction of the lead wire shielding plate 22, a handle groove 31 is provided above the lead wire shielding plate 22, and the handle groove 31 is located directly above the connector 26. The connector 26 is T-shaped, including The horizontal mounting part 27 on the hanging plate 22, the fixing part 28 perpendicular to it is installed on the horizontal mounting part 27, the bottom of the fixing part 28 is equipped with a plug connector 29, and the diameter direction of the fixing part 28 is equipped with a nail 30, which penetrates The two ends of the nail 30 are located outside the fixing member 28;

The cross section of the insulator cover 31 of the present embodiment is n type, the cross section of the wire cover 32 is convex, the height of the insulator cover 31 is higher than the height of the wire cover 32, and the width of the insulator cover 31 is the same as the cover bottom of the wire cover 32. The width matches, the card slot Ⅰ33 and the card slot Ⅱ34 are both vertical strips, the top of the card slot Ⅰ33 is designed in an arc shape, and the bottom is designed in a figure-eight shape, the top of the card slot II34 is designed in a straight shape, and the bottom is designed in a figure-eight shape. A handle 35 is installed on the top of the wire cover 32;

The metal head 4 of this embodiment includes a plug-in end 4-1 that is plugged into the plug joint 29 and an installation end 4-2 installed on the insulating transmission rod 6, and the insertion end 4-1 and the installation end 4-2 are Integral structure, the outer diameter of the insertion end 4-1 is larger than the outer diameter of the installation end 4-2 so as to form a card platform I14 at the connection between the two;

The intermediate ring 3 of this embodiment includes an end 15, an intermediate sleeve 16, and a fixed pipe 17 sleeved on the outside of the metal head 4. The end 15, the intermediate sleeve 16, and the fixed pipe 17 are an integral structure connected end to end, and The outer diameters and inner diameters of the three are successively reduced, so that a card platform II18 is formed at the connection between the end 15 and the outer wall of the intermediate sleeve 16, and a card platform III19 is formed at the connection between the intermediate sleeve 16 and the inner wall of the fixed pipe 17, and card platform III19 is formed. It is clamped with the card table I14, the fixing tube 17 is provided with a nail hole I5, the outer tube I12 is provided with a nail hole II10 used in conjunction with the nail hole I5, and the end of the outer tube II13 is provided with a nail hole III21, The end of the insulating transmission rod 6 is provided with a nail-piercing hole IV8 used in conjunction with the nail-piercing hole III21;

In this embodiment, the end 15 close to the power tool is provided with two hollowed out slots 20, the two hollowed out slots 20 are symmetrical with the central axis of the end 15 as the axis center, and the hollowed out slots 20 include One end of the power tool extends to the vertical hollow groove 20-1 in the middle of the end 15, the horizontal hollow groove 20-2 connected with the vertical hollow groove 21, and the end of the horizontal hollow groove 20-2 is provided with an upwardly extending arc shaped hollow groove 20-3; the intersection of vertical hollow groove 20-1 and horizontal hollow groove 20-2 is designed as a slope;

The locking ring 1 of the present embodiment includes a spring 9 partly arranged in the locking ring 1 and a bottom ring 2 which abuts against the tail of the spring 9. The inner wall of the locking ring 1 is provided with an annular locking platform IV11, and the annular locking platform IV11 is connected with the locking ring 1. Card stage Ⅱ18 is snapped together, the inner diameter of ring card stage Ⅳ11 is smaller than the outer diameter of card stage Ⅱ18, the top of one end of spring 9 is against the ring card stage Ⅳ11, the other end is against bottom ring 2, one side of bottom ring 2 Arrives on the outer tube I12.

The working principle of the lead wire shielding hanging plate 22 and the integrated shielding cover: In this embodiment, the lead wire shielding hanging plate 22 is hung on the wire by using the insulating operating rod, the hook body I23 is hung on the bowl head of the insulator, and the hook body II24 is hung on the wire , and then rotate the operating lever in the opposite direction to unlock the connector 26 and take off the operating lever to complete the installation of the lead wire shielding hanging plate. When hanging, pay attention to place the strain insulator string on the notch of the lead wire shielding hanging plate 22. This embodiment adopts The insulating operating rod hangs the shielding cover on the wire, the insulator outer cover 31 of the shielding cover is arranged on the outside of the insulator, the wire outer cover 32 is arranged on the outside of the wire, and the two ends of the shielding cover are respectively hung on the bowl head of the insulator and on the wire, and the hanging After completion, rotate the operating lever in the opposite direction to unlock the connector 26 and take off the operating lever to complete the installation of the shield. The specific process is as follows:

The metal head 4 of this embodiment is located in the middle ring 3, and the card platform I14 of the metal head 4 is clamped on the card platform III19 in the middle ring 3. Platform Ⅱ18 is clamped on the clamping platform Ⅳ11 inside the locking ring 1, and the part of the hollow card slot 20 on the intermediate ring 3 is covered by the locking ring 1. Keeping a safe distance of more than 0.4m, the electrician on the ground uploads the insulating operating rod and the lead wire shielding hanging plate 22 to the electrician on the pole through the rope, and the electrician on the pole inserts the metal head 4 and the plug connector 29, and then presses down the locking ring 1 , so that the hollow card slot 20 is fully exposed, so that the nail 25 is inserted into the vertical hollow slot 20-1, and then the middle ring 3 is rotated to move the nail 25 to the horizontal hollow slot 20-2, and then to the arc hollow slot 20-3, at this time, the locking ring 1 resets under the action of the spring 9, and the top of the locking ring 1 firmly clamps the piercing nail 25 in the arc-shaped hollow groove 20-3, so that one end of the insulating operating rod It is fixed together with the lead wire shielding hanging plate 22. At this time, the staff lifts the lead wire shielding hanging plate 22 through the insulating operating rod, the hook body I23 is hung on the bowl head of the insulator, and the hook body II24 is hung on the wire. The hanging is completed Finally, rotate the outer tube II 13 in the opposite direction, unlock the connector 26 and take off the insulating operating rod to complete the installation of the lead wire shielding hanging plate. The same is true for hanging the shielding cover. One side of the card slot Ⅰ33 is hung on the insulator bowl head, and the side of the card slot Ⅱ34 is hung on the wire. After the hanging is completed, turn the outer tube Ⅱ13 in the opposite direction, unlock the connector 26 and take off the insulating operating rod to complete the shielding cover. Easy to install and use, high work efficiency, good effect and high safety factor.

The insulating rod method of the present invention for replacing the middle-phase isolating switch with load has little restrictions on the working environment, and the working tools are convenient to carry and transport. The advantages of easy training and high safety factor help to expand the scope of live work, improve the reliability of the power grid, and ensure the normal use of electricity by users, which has great social benefits.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. a kind of insulating bar method on-load isolates the operational method of switch in replacing, it is characterized in that comprising the following steps：

1）, electrical verification is carried out to circuit and device, carry out next step operation after electrical verification qualification；

2）, ground potential coaster is installed on cross-arm；

3）, installation electric pole mask, insulation masking is carried out to electric pole；

4）, isolation switch insulation partition plate is installed respectively in the phase of both sides, both sides are isolated with switch and carries out insulation masking；

5）, using insulating bar lead is covered into hanging plate（22）Hang on side phase conductor and insulator pin, complete opposite side phase The insulation masking of lead, hangs integrated mask using insulating bar, completes opposite side phase strain insulator, wire clamp and portion The insulation masking of intraphase conductor；

6）, in both sides divest wire insulation at 15-20cm on the outside of phase conductor wire clamp；

7）, using insulating bar interim insulation lead wire is synchronously installed, switch bypass is isolated by；

8）, it is adjacent in detection when the through-flow situation of insulation lead wire, after confirming that shunting is good, switch is isolated in pulling open；

9）, switch both sides lead is isolated in disconnection, at this time in isolate switch and be just in electroless state, operating personnel more renews Disconnecting switch；

10）, install and draw after new disconnecting switch, close pass the test after, using insulating bar by disconnecting switch both sides Lead accesses main traverse line；

11）, close in isolate switch, be isolated in detection switch it is through-flow it is all right after, synchronously torn open using insulating bar Insulation lead wire when adjacent in removing；

12）, using insulating bar remove both sides mutually integrated mask and lead respectively according to opposite order during installation Cover hanging plate（22）, and remove isolation switch insulation partition plate, remove electric pole mask, remove ground potential coaster, the end of job.

2. a kind of insulating bar method on-load described in accordance with the claim 1 isolates the operational method of switch in replacing, feature exists Hanging plate is covered in the lead（22）In concave shape, lead masking hanging plate（22）Top end positions at be separately installed with absolutely The coupler body I that edge bowl head mutually mounts（23）, the coupler body II that mutually mounts with conducting wire（24）, lead masking hanging plate（22）On the company of being provided with Connector（26）, connector（26）It is installed on lead masking hanging plate（22）At upper position and positioned at lead masking hanging plate（22）Length Direction middle position, lead masking hanging plate（22）Top offers handle groove（30）, handle groove（30）Positioned at connector（26） Surface.

3. a kind of insulating bar method on-load described in accordance with the claim 1 isolates the operational method of switch in replacing, feature exists In being provided with connector I on the outer wall of the integrated mask（36）, integrated mask is including covering at exterior insulator Insulator outer cover（31）And cover at conducting wire outer cover outside conducting wire（32）, insulator outer cover（31）With conducting wire outer cover（32）Bottom Portion's opening and the two be the integrative-structure to connect, insulator outer cover（31）Side be equipped with the card that is mutually clamped with insulator bowl head Groove I（33）, conducting wire outer cover（32）Side be equipped with the card slot II for being used for mutually being clamped through conducting wire and with conducting wire（34）, outside insulator Cover（31）Cross section be in N-shaped, conducting wire outer cover（32）Cross section be in convex, insulator outer cover（31）Height be higher than conducting wire Outer cover（32）Height, insulator outer cover（31）Width and conducting wire outer cover（32）Cover bottom width degree match, card slot I（33）With Card slot II（34）Perpendicular strip, card slot I（33）Top design be designed as splayed, card slot II for arc, bottom（34） Top design be designed as splayed configuration, conducting wire outer cover for yi word pattern, bottom（32）Top handle is installed（35）.

4. the operational method of switch, feature are isolated in being replaced according to a kind of insulating bar method on-load described in Claims 2 or 3 It is the connector（26）Or connector I（36）It is T-shaped, including it is horizontally mounted part（27）, it is horizontally mounted part（27）Upper peace Equipped with the fixing piece perpendicular with it（28）, fixing piece（28）Bottom connection-peg is installed（29）, fixing piece（28）Diameter Drift bolt is installed on direction（25）, drift bolt（25）Both ends be located at fixing piece（28）Outside.

5. isolating the operational method of switch in being replaced according to a kind of insulating bar method on-load described in claim 4, feature exists Include and connector in the insulating bar（26）Or connector I（36）The ferrule plugged（4）, ferrule（4）Installation In insulating driving rod（6）End, ferrule（4）Outer cover be equipped be used for fix connector（26）Or connector I（36） Middle ring（3）, middle ring（3）Outer cover be equipped with liftable retaining ring（1）, along insulating driving rod（6）Outer length The outer tube I being mutually screwed on is arranged with direction（12）, outer tube II（13）, outer tube II（13）End and insulating driving rod（6）End End is mutually fixed.

6. isolating the operational method of switch in being replaced according to a kind of insulating bar method on-load described in claim 5, feature exists In the ferrule（4）Including with connection-peg（29）The inserted terminal plugged（4-1）And it is installed on insulating driving rod（6）On peace Fill end（4-2）, inserted terminal（4-1）With installation end（4-2）It is structure as a whole, inserted terminal（4-1）Outside diameter be more than installation end（4-2） Outside diameter so as to the two junction formed chuck I（14）.

7. isolating the operational method of switch in being replaced according to a kind of insulating bar method on-load described in claim 5, feature exists In the middle ring（3）Including being sheathed on ferrule（4）Exterior termination（15）, intermediate casing（16）, fixing pipe（17）, termination （15）, intermediate casing（16）, fixing pipe（17）For end to end integrative-structure, and the outside diameter of three and internal diameter successively decrease successively So as in termination（15）With intermediate casing（16）Outer wall junction formed chuck II（18）, in intermediate casing（16）With fixing pipe （17）Inner wall junction formed chuck III（19）, chuck III（19）With chuck I（14）Mutually it is clamped.

8. isolating the operational method of switch in being replaced according to a kind of insulating bar method on-load described in claim 7, feature exists In the fixing pipe（17）On offer drift bolt hole I（5）, outer tube I（12）On offer and drift bolt hole I（5）What is be used cooperatively wears Nail II（10）, outer tube II（13）End be equipped with drift bolt hole III（21）, insulating driving rod（6）End be equipped with and drift bolt hole III （21）The drift bolt hole IV being used cooperatively（8）.

9. isolating the operational method of switch in being replaced according to a kind of insulating bar method on-load described in claim 7, feature exists In the termination（15）Two hollow out card slots are offered close to one end of electric power tool（20）, two hollow out card slots（20）With termination （15）Central shaft for eccentric axial it is symmetrical, hollow out card slot（20）Including from termination（15）Prolong always close to one end of electric power tool Extend termination（15）The vertical hollow slots of middle position（20-1）, with vertical hollow slots（21）The horizontal hollow slots to connect （20-2）, horizontal hollow slots（20-2）End be equipped with the arc hollow slots that upwardly extend（20-3）, vertical hollow slots（20-1） With horizontal hollow slots（20-2）Intersection is designed as ramped shaped.

10. isolating the operational method of switch in being replaced according to a kind of insulating bar method on-load described in claim 7, feature exists In the retaining ring（1）Retaining ring is arranged on including part（1）Interior spring（9）And it is butted on spring（9）The base ring of afterbody（2）, lock Tight ring（1）Inner wall be equipped with annular chuck IV（11）, annular chuck IV（11）With chuck II（18）Mutually it is clamped, annular chuck IV （11）Internal diameter be less than chuck II（18）Outside diameter, spring（9）One end at the top of be butted on annular chuck IV（11）On, the other end It is butted on base ring（2）On, base ring（2）Side be butted on outer tube I（12）On.