CN106033872B - Equipotential changes the instrument of the double soft bus strain insulators of simply connected - Google Patents

Abstract

A tool for equipotentially replacing tension insulators of single-connected double flexible busbars, which relates to the technical field of electric power maintenance. There is also a U-shaped slot for the right-angled hanging plate bolts on the fixed joint plate bayonet. The rear card is provided with a vertical U-shaped slot and a horizontal U-shaped slot. The safety plate assembly and wing nut are fixed to the hanging ring string; The rod assembly, the left and right screw rods are connected with the insulating pull plate, and the locking pin of the insulating pull plate is fixed to the insulating pull plate; the locking pin of the bottle holder is fastened to the bottle holder. The spring and the screw plug are positioned on the ball stud, and the hanging ring string is connected in series by two hanging rings. The invention adopts connecting boards and right-angle hanging boards to connect with double flexible busbars, and the other side is connected with the door frame with series-mounted hanging rings. The insulator replacement work of the double flexible busbar has a simple structure and strong operability.

Description

Tool for equipotential replacement of tension insulators for single-connected double soft busbars

technical field

The invention relates to the technical field of electric power maintenance, in particular to a tool for equipotentially replacing tension insulators of single-connected double flexible busbars.

Background technique

In the prior art, there are two kinds of tools for replacing single-connected tension insulators, namely, the tool for replacing tensile insulators used on substation bridge lines, and the tool for replacing single-connected tensile insulators on live lines used on 110kV transmission lines. Among them, the former cannot meet the conditions of equipotential operation, and the replacement of insulators must be completed when the equipment is powered off; while the latter can only carry out live maintenance on single-connected tensile insulators of 110kV transmission lines, and cannot replace insulators on double soft busbars in substations. Moreover, neither of them can meet the field equipment conditions of single-connected double-flexible busbars in substations. The front and rear clamps cannot fix the two ends of the single-connected double-flexible busbar tension insulator strings, so that the insulator strings cannot be in a relaxed state. Insulator replacement work cannot be carried out.

In substations, a large number of 110kV and 220kV buses adopt single-connected double-flexible busbar wiring (single-connected tension insulators are fastened in series with double flexible busbars), and insulators will inevitably deteriorate (low zero value) or flashover during long-term operation. Therefore, the deteriorated or flashover insulators must be replaced in time. Due to the lack of existing technology, the method of power outage inspection and maintenance of insulators is generally adopted in the power industry, and there is no precedent for implementing equipotential replacement of single-connected double flexible busbar insulators. The reason is the lack of corresponding insulator fixtures.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a tool for equipotential replacement of single-connected double-flexible busbar tension insulators to meet the needs of live maintenance of single-connected double-flexible busbar tension insulators with a voltage level of 220 kV and below.

In order to achieve the purpose of the above invention, one end of the single-connection tension insulator string of the present invention is connected to the double flexible busbar through the connecting plate and the right-angle hanging plate; Connected by two insulated pull plates, one end of the dragging bottle rack carrying a single tension insulator string is connected to the front card through the bottle holder ring assembly, and the other end is connected to the rear card through the bottle holder fixing assembly; the front card is equipped with The bayonet for fixing the connecting plate, and the front card also has a U-shaped groove for placing the right-angle hanging plate and bolts.

The rear card is provided with a vertical U-shaped card slot and a horizontal U-shaped card slot for fixing the hanging ring string, and the safety plate assembly and the butterfly nut are fixed to the hanging ring string; the screw assembly, left and right screw rods are insulated The fixing port of the pull plate is connected with the insulating pull plate, and the locking pin of the insulating pull plate is fixed to the insulating pull plate; the locking pin of the bottle holder of the bottle holder fixing component is fastened to the bottle holder.

One end of the insulating pull plate is provided with a rear card connection hole 1, and the other end is provided with a plurality of front card connection holes.

The bottle holder is connected by two cylindrical insulating rods via a spacing adjustment plate, and one end of the cylindrical insulating rods is provided with a rear card connection hole two.

The front card is provided with a through hole connecting the insulating pull plate and a ball pin for locking it, and a marble, a spring, and a screw plug are in place for the ball pin.

The hanging ring string is connected in series by two hanging rings.

The double soft busbars are connected in series with single tension insulators via connecting plates, right-angled hanging plates and hydraulic tension clamps.

Between the double soft busbars, there is a soft busbar spacer clamp.

Compared with the prior art, the present invention is different from the existing tools of the same type in terms of appearance, function and place of use, and realizes the replacement of single-connected double flexible busbar insulators under equipotential conditions. The present invention mainly realizes The effect of the following three aspects:

Effect 1: Realize the replacement of single-connected double soft busbar insulators under equipotential conditions, solve the problem of busbar power failure when replacing insulators, reduce busbar switching operation procedures, reduce labor intensity of operators, and improve work efficiency. Ensure power supply reliability and maintenance benefits.

Effect 2: The front card has realized the fixation of the single-connected double soft busbar tension insulator string busbar terminal board, and the design of key parts such as the bayonet, U-shaped groove, bottle support ring and through hole of the front card is reasonable, and it is consistent with the site The equipment fits well and is secured securely.

Effect 3: The rear card realizes the fixing of the single-connected double flexible busbar tension insulator string, the door frame end hanging ring string, and the vertical U-shaped card slot, horizontal U-shaped card slot, insurance board assembly, wing nut, etc. of the rear card The key parts are reasonably matched with the hanging ring string, so as to realize the firm fixing of the hanging ring string.

The invention has the advantages of simple structure, convenient use and strong operability.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the use state of the present invention.

Fig. 3 is a schematic diagram of the structure of the front card of the present invention.

FIG. 4 is a side view of FIG. 3 .

FIG. 5 is a top view of FIG. 3 .

Fig. 6 is a schematic diagram of the rear card structure of the present invention.

FIG. 7 is a bottom view of FIG. 6 .

Fig. 8 is a schematic diagram of the structure of the insulating pull plate of the present invention.

Fig. 9 is a structural schematic diagram of the bottle holder of the present invention.

In the figure, 1. Front card, 2. Rear card, 3. Insulation pull plate, 4. Bottle holder, 5. Substation door frame, 6. Hanging ring, 7. Hanging ring string, 8. Single-connected strain insulator string , 9. Connecting board, 10. Right-angle hanging board, 11. Double soft busbar, 12. Hydraulic tension clamp, 13. Soft busbar spacer clamp, 14. Bayonet, 15. U-shaped groove, 16. Bottle support Ring assembly, 17, marble, 18, spring, 19, screw plug, 20, ball pin, 21, through hole, 22, vertical U-shaped slot, 23, horizontal U-shaped slot, 24, safety plate assembly, 25. Wing nut, 26. Screw assembly, 27. Left and right rotation screw, 28. Insulation pull plate fixing port, 29. Insulation pull plate locking pin, 30. Bottle holder fixing component, 31, Bottle support Frame locking pin, 32, rear card connection hole one, 33, front card connection hole, 34, rear card connection hole two, 35, cylindrical insulating rod, 36, interval adjustment plate.

Detailed ways

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, one end of the single tension insulator string 8 is connected to the double soft busbar 11 through the LV-0712 type connecting plate 9 and the Z-10 type right angle hanging plate 10; The other end is connected to the substation door frame 5 through the U-10 type hanging ring string 7, the front card 1 and the rear card 2 are connected through two insulating pull plates 3, and one end of the drag bottle rack 4 carrying the single-connected strain insulator string 8 is supported The bottle ring assembly 16 is connected with the front card 1, and the other end is connected with the rear card 2 through the bottle holder fixing assembly 30; the bottle holder ring assembly 16 and the bottle holder fixing assembly 30 are installed on the front card 1 and the rear card 2 respectively; The front card 1 is provided with a bayonet 14 for fixing the connecting plate 9, and the front card 1 is also provided with a U-shaped groove 15 for placing the right-angle hanging plate 10 and bolts, which is reserved for the bolts on the Z-10 type right-angle hanging plate 10. space, to ensure that the bayonet 14 on the front card 1 can fix the LV-0712 type connecting plate 9.

The hanging ring string 7 is connected in series by two Z-10 type hanging rings 6 .

The double flexible busbar 11 is connected to the single tension insulator string 8 through the LV-0712 connecting plate 9, the Z-10 right angle hanging plate 10 and the hydraulic tension clamp 12.

Between the double soft busbars 11, there is a soft busbar spacer clip 13.

The front card 1 is provided with a ball stud 20 for locking the insulating pull plate 3 , and the marble 17 , spring 18 , and screw plug 19 are positioned on the ball stud 20 to prevent the insulating pull plate 3 from falling off from the through hole 21 .

As shown in Figures 6 and 7, the rear card 2 is provided with a vertical U-shaped card slot 22 and a horizontal U-shaped card slot 23 for fixing the hanging ring string 7, wherein the vertical U-shaped card slot 22 is placed in a string The first (mast side) U-10 hanging ring 6 connected, the horizontal U-shaped card slot 23 places the second U-10 hanging ring 6 connected in series; the safety plate assembly 24 and wing nut 25 cooperate Use pair of hanging loops to secure on string 7.

The screw assembly 26, the left and right screw rods 27 are connected to the insulating pull plate 3 through the fixing opening 28 of the insulating pull plate, and the left and right screw rods 27 realize the control of the distance between the front card 1 and the rear card 2 by adjusting the screw rods , so that the single tension insulator string 8 reaches a relaxed state or a tightened state. Its adjustable range width is between 0-18cm.

The insulating pull plate locking pin 29 is fixed to the insulating pull plate 3 to prevent the insulating pull plate 3 from slipping; solid.

The main parts of the front card 1 and the rear card 2 of the present invention are made of aluminum alloy materials (titanium alloy materials can also be used), the working load can reach 30KN, and the dynamic test load can reach 30KN, which can meet the maintenance requirements of single-connected double soft busbar equipment in substations .

As shown in Figure 8, one end of the insulating pull plate 3 is provided with a rear card connection hole 32 connected to the rear card insulation pull plate fixing port 28; the other end is provided with a plurality of optional front card connection holes 33 and front Cartoon hole 21 connection, according to the length of the single tension insulator string 8, select the appropriate front card connection hole 33 on the insulating pull plate 3, to meet the requirements of different types of single tension insulator string 8.

As shown in Figure 9, the bottle holder 4 is connected by two cylindrical insulating rods 35 via a spacer adjusting plate 36, and the spacer adjusting plate 36 can adjust the distance between the cylindrical insulating rods 35, and the distance range is between 0-20cm. Convenient transportation and storage; one end of the cylindrical insulating rod 35 is provided with a rear card connection hole 2 34, which is connected with the rear card holder bottle holder fixing component 30, and is fastened by the bottle holder locking pin 31; the cylindrical insulating rod 35 Made of high-performance insulating material capable of withstanding high mechanical loads.

During use, the present invention carries out according to the following steps:

The first step: the ground operator assembles the front card 1, the rear card 2 and the insulating pull plate 3, and the following steps must be strictly followed during assembly: 1. One end of the two insulating pull plates 3 passes through the left and right sides of the front card 1 respectively According to the length of the on-site double flexible busbar insulator string 8, select the appropriate front card connection hole 33, and use the ball pin 20 to lock the insulating pull plate 3. 2. Before assembling the rear card 2 and the insulating pull plate 3, first adjust the left and right screw rods 27 so that the length of the left and right screw rods is about half of the total length; Put it into the insulating pull plate fixing port 28 on the rear card 2, and lock the insulating pull plate locking pin 29.

Step 2: The ground operator transfers the assembled front card 1, rear card 2 and insulating puller 3 boards to the double flexible busbar 11 with insulated ropes through the pulleys set at the substation gantry 5 and the double flexible busbar 11 The equipotential operators and the ground potential operators on the substation gantry 5.

Step 3: The equipotential operator clamps the bayonet 14 of the front card 1 on the edge of the LV-0712 connecting plate 9 between two Z-10 type right-angle hanging plates 10, and the ground potential operator places the rear card 2 The vertical U-shaped draw-in groove 22 and the horizontal U-shaped draw-in groove 23 on the top are respectively placed on two U-10 type hanging ring strings 7 connected in series on the door frame side, cover the safety plate assembly 24, and use wing nuts 25 Fasten the U-10 type hanging ring string 7 firmly.

Step 4: The ground operator transfers the bottle holder 4 to the equipotential operator and the ground potential operator, and the equipotential operator first puts one end of the bottle holder 4 into the two bottle holder ring assemblies 16 of the front card 1 respectively In the middle, the card holder connection hole 2 34 after the bottle holder 4 is inserted into the rear card holder bottle holder fixing assembly 30 respectively by the ground potential operator, and is fastened with the bottle holder locking pin 31.

Step 5: After the tool has been installed, the ground potential operator will lock the left and right screw rods 27 after adjustment, until the single tension insulator string 8 is in a completely relaxed state, and the bottle holder 4 bears the full weight of the insulator string.

Step 6: According to the degree of deterioration or flashover of the bus insulators, two methods are adopted to replace the insulators: 1. The replacement of the whole string: the equipotential personnel and the ground potential personnel cooperate to remove the entire string of insulators and pass through the pulleys at both ends Pass it to the ground, and the ground operator will pass the new insulator string to the equipotential and ground potential operators to realize the replacement of the entire string of insulators. 2. Partial replacement: Equipotential workers or ground potential workers remove the insulators that need to be replaced and replace them.

Step 7: After the replacement of the insulators is completed, the operator of the ground potential adjusts and locks the left and right screw rods 27 to restore the original stress state of the insulator string.

Step 8: Remove the front card 1, the rear card 2, the insulating pull plate 3 and the bottle holder 4. The removal sequence is opposite to the installation process.

Step Nine: After the tool is completely removed, it is passed to the ground by an insulated rope. The ground potential workers and equipotential workers left the bus equipment and returned to the ground, and the insulator replacement work was successfully completed.

Claims (6)

1. a kind of equipotential changes the instrument of the double soft bus strain insulators of simply connected, simply connected strain insulator string（8）One end is through connection Plate（9）, right angle hanging plate（10）With double soft buses（11）Connection；The other end is through link string（7）With transformer station's door frame（5）Connection, its It is characterised by：Preceding card（1）With rear card（2）Pass through two insulation pulling plates（3）Connection, carry simply connected strain insulator string（8）Drag Bottle stand（4）One end is through bottle supporting ring assemblies（16）With preceding card（1）Connection, the other end is through bottle-holding rack fixation kit（30）With rear card（2） Connection；Block before described（1）It is provided with fixed yoke plate（9）Bayonet socket（14）, preceding card（1）On be additionally provided with place right angle hanging plate（10）And The U-type groove of bolt（15）；

Block after described（2）It is provided with fixed link string（7）Vertical U-type neck（22）, horizontally U-shaped neck（23）, safeguard group Part（24）, wing nut（25）To link string（7）It is fixed；Screw component（26）, left and right rotation screw mandrel（27）Fixed through insulation pulling plate Mouthful（28）With insulation pulling plate（3）Connection, insulation pulling plate locking pin（29）To insulation pulling plate（3）It is fixed；Bottle-holding rack fixation kit （30）Bottle-holding rack locking pin（31）To bottle-holding rack（4）Fastening；

Block before described（1）It is provided with connection insulation pulling plate（3）Through hole（21）And the bulb pin locked to it（20）, pellet （17）, spring（18）, plug screw（19）To bulb pin（20）Screens.

2. equipotential according to claim 1 changes the instrument of the double soft bus strain insulators of simply connected, it is characterised in that：Institute State insulation pulling plate（3）Card connecting hole one after one end is provided with（32）, the other end is provided with multiple preceding card connecting holes（33）.

3. equipotential according to claim 1 changes the instrument of the double soft bus strain insulators of simply connected, it is characterised in that：Institute State bottle-holding rack（4）By two cylindrical insulating bars（35）Through being spaced adjustable plate（36）Connection, cylindrical insulating bar（35）One end is set Card connecting hole two after having（34）.

4. equipotential according to claim 1 changes the instrument of the double soft bus strain insulators of simply connected, it is characterised in that：Institute State link string（7）By two links（6）Connection in tandem.

5. equipotential according to claim 1 changes the instrument of the double soft bus strain insulators of simply connected, it is characterised in that：Institute State double soft buses（11）Through yoke plate（9）, right angle hanging plate（10）And hydraulic strain clamp（12）With simply connected strain insulator string（8） Connection.

6. equipotential according to claim 1 changes the instrument of the double soft bus strain insulators of simply connected, it is characterised in that：Institute State double soft buses（11）Between be provided with soft bus interval wire clamp（13）.