CN214898223U - Emergency device for conductive loop of high-voltage isolating switch - Google Patents
Emergency device for conductive loop of high-voltage isolating switch Download PDFInfo
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- CN214898223U CN214898223U CN202121768500.1U CN202121768500U CN214898223U CN 214898223 U CN214898223 U CN 214898223U CN 202121768500 U CN202121768500 U CN 202121768500U CN 214898223 U CN214898223 U CN 214898223U
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Abstract
The utility model discloses a high-voltage isolating switch conductive loop emergency device, which comprises two parallel-arranged guide rows, wherein two ends of the two guide rows are respectively connected through bolts, the outer edges of the two guide rows are vertically connected with contact fingers, the two contact fingers are used for clamping conductive rods of moving and static contacts of a isolating switch conductive loop, the outer surface of each contact finger is covered with an insulating gasket, an elastic holding clamp is arranged outside each insulating gasket, each elastic holding clamp is used for enabling the two opposite contact fingers to be mutually closed, an operation hanging plate is also arranged on the emergency device, the operation hanging plate is used for matching with the insulating rod to install the emergency device on the conductive rods of the moving and static contacts of the isolating switch conductive loop through the insulating rod, the method has the advantages that the fault area is shunted, the temperature of the contact of the isolating switch is restrained from continuously rising, the time of power failure maintenance of the isolating switch due to the fact that the contact heats is delayed, and continuous power supply to important users at key moments is guaranteed.
Description
Technical Field
The utility model relates to an electric power electric wire netting technical field especially relates to a high voltage isolator conductive loop emergency device.
Background
The high-voltage isolating switch is high-voltage switch equipment with the largest use amount and the widest application range in a power system, and mainly has the function of ensuring the isolation between a repairing part and a live part in the repairing operation process; meanwhile, the circuit can be switched or the no-load circuit can be closed by using the isolating switch.
The high-voltage isolating switch can generate some faults in the operation, wherein the overheating of a conductive loop is a problem which cannot be thoroughly solved by the high-voltage isolating switch for a long time, according to the current practical operation experience, the working current of the high-voltage isolating switch can only be about 60% of the rated current of the high-voltage isolating switch, and if the working current exceeds 70%, the high-voltage isolating switch can generate heat. In order to solve the heating problem of the isolating switch in operation, the high-voltage isolating switch is required to carry out a temperature rise test according to 1.2 times of rated current in the power industry standard. Although a new product can pass the test, the equipment in operation is still overheated, which means that the use condition changes the current capacity of the isolating switch, that is, after long-term operation, the current-guiding element of the isolating switch has changed and may change more and more along with the extension of the operation time, the experience of the past heating fault of the isolating switch is summarized, and the reason of the heating of the conducting loop of the isolating switch is mainly as follows:
1. insulation measures are not taken between the contact spring and the contact or the contact is damaged although the measures are taken, so that current flows through the spring to anneal the spring to lose elasticity, and the contact and the conductive rod are in poor contact to generate heat.
2. The contact spring is in a compressed working state for a long time and can be fatigued, and slowly lose elasticity along with the increase of the operation time, and even can generate permanent deformation, so that poor contact of the contact is caused.
3. The length and the elasticity of the contact spring are different, which is one of the reasons for the heating of the contact, the length deviation of the spring used for assembling the same contact is larger or the elasticity is different, the distribution of the current of each contact finger of the contact is different due to the difference of the pressure in the running process, the distribution of the current is more uneven when the difference is larger, and the contact failure can occur after the long-term running to generate heat.
Therefore, the whole operation working condition of the movable contact and the fixed contact of the isolating switch is focused in the daily inspection process of the equipment, if the temperature rise of the contact part of the movable contact and the fixed contact is abnormally increased, the power is cut off in time for maintenance, and the movable contact and the fixed contact of the isolating switch can be replaced when necessary. However, due to various reasons, power failure processing cannot be carried out in time under many conditions, and hidden dangers are left for safe operation of equipment; or the system is forced to stop operation in an emergency, and although the fault is processed, the power supply to important users is interrupted, so that the social image of an enterprise is adversely affected.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at prior art's not enough, provide a high voltage isolator conductive loop emergency device, can restrain isolator contact temperature and continue to rise, delay isolator because of the contact time of overhauing that has a power failure that generates heat, guarantee to important user's continuous power supply constantly at the key, not only solved in the operation because of high voltage isolator moves, the static contact generates heat and is forced the difficult problem of promptly stopping the operation, has also improved the reliability of substation equipment power supply moreover.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a high voltage isolator conductive loop emergency device, emergency device includes two parallel arrangement's water conservancy diversion row, the both ends of two water conservancy diversion rows are respectively through bolted connection, the outside of two water conservancy diversion rows is connected with perpendicularly and touches the finger, two touch the conductive rod that the finger is used for chucking isolator conductive loop sound contact, every outside that touches the finger covers has insulating pad, every insulating pad is provided with the elasticity armful clamp outward, every elasticity armful clamp is used for making two relative touch the finger draw close each other, still be provided with the operation link plate on the emergency device, the operation link plate is used for installing emergency device on the conductive rod of isolator conductive loop sound contact through the insulating rod with the insulating rod cooperation, shunt failure zone, it continues to rise to restrain isolator contact temperature, delay isolator because of the time that the contact generates heat and has a power failure to overhaul.
Furthermore, the bolt is an adjusting bolt, and the distance between the two guide rows can be adjusted by adjusting the length of the adjusting bolt so as to be suitable for the sizes of the movable and fixed contact conductive rods of the conductive loops of the isolating switches of different models.
Furthermore, the straight bottom of the top of each contact finger is bent outwards so that the distance between the bottoms of the two opposite contact fingers is reduced from bottom to top in sequence, and the contact fingers can conveniently move downwards from the top ends of the movable and fixed contact conductive rods of the conductive loop of the isolating switch to clamp the conductive rods.
Furthermore, the diversion row is an aluminum row or a silver-plated copper row, and the size of the diversion row is set according to the rated current of the isolating switch needing emergency treatment.
Furthermore, the contact fingers are made of electrical copper materials, and the size of the contact fingers is set according to the rated current of the isolating switch needing emergency treatment.
Furthermore, the elastic holding clamp is made of a non-magnetic spring steel plate, and the width of the elastic holding clamp is set according to the width of the contact finger.
Furthermore, two thirds of the elastic holding clamp from bottom to top is processed into an arc shape which is bent inwards, so that clamping force is provided for the contact finger, and the contact finger is in fit contact with the dynamic and static contact conductive rod of the conductive loop of the isolating switch.
Furthermore, an insulating layer is arranged on the outer surface of the flow guide row.
Furthermore, the operation hanging plate is made of insulating materials.
Compared with the prior art, the utility model provides a high voltage isolator conductive loop emergency device has following beneficial effect:
1. the utility model provides a high voltage isolator conductive loop emergency device, arrange including two parallel arrangement's water conservancy diversion, the both ends of two water conservancy diversion rows are respectively through bolted connection, the outside of two water conservancy diversion rows is connected with perpendicularly and touches the finger, two touch the conducting rod that the finger is used for chucking isolator conductive loop sound contact, touch finger and conducting rod formation route and shunt fault area, it continues to rise to restrain isolator contact temperature, delay isolator because of the contact time of power failure maintenance that generates heat, guarantee to important user's continuous power supply constantly at the key, not only solved in the operation because of high voltage isolator moves, the static contact generates heat and is forced the difficult problem of promptly stopping transport, and the reliability of substation equipment power supply has also been improved, the good social image of power supply enterprise has still been established simultaneously.
2. The utility model provides a high voltage isolator conductive loop emergency device, every outside that touches the finger covers has insulating gasket, and every insulating gasket is provided with elasticity outward and embraces the clamp, and every elasticity is embraced and is pressed from both sides and is used for making two relative contact fingers draw close to each other, for touching the finger and provide the clamp force, makes contact finger and isolator conductive loop sound contact pole laminating contact, avoids contact failure to cause local contact resistance too big and then cause to generate heat and seriously influence reposition of redundant personnel effect. The insulating gasket can keep apart and touch finger and elasticity embrace and press from both sides, prevents that the electric current from touching finger flow direction elasticity and embracing from pressing from both sides, prevents that elasticity from embracing to press from both sides because of through-flow back annealing and losing elasticity, causes the clamp force to reduce, makes emergency device's contact and isolator conducting rod contact failure and influences emergent effect.
3. The utility model provides a high voltage isolator conductive loop emergency device still is provided with the operation link plate on the emergency device, and the operation link plate is used for installing emergency device on the conducting rod of isolator conductive loop sound contact through the insulator spindle with the cooperation of knot reason pole. Can prolong the distance that the staff can operate through the insulator spindle, avoid the staff closely to contact the electrified body, guarantee staff's safety.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is the utility model provides a high voltage isolator conductive loop emergency device's schematic structure.
In the figure, 1, a guide row, 2, a contact finger, 3, an elastic holding clamp, 4 and an operation hanging plate.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an emergency device for a conductive loop of a high-voltage isolating switch, the emergency device for a conductive loop of a high-voltage isolating switch provided by the present invention comprises two parallel-arranged guide rows 1, two ends of the two guide rows 1 are respectively connected by bolts, the outer edges of the two guide rows 1 are vertically connected with contact fingers 2, the two contact fingers 2 are used for clamping conductive rods of moving and fixed contacts of the conductive loop of the isolating switch, the contact fingers 2 and the conductive rods form a path to shunt a fault area, thereby inhibiting the temperature of the contacts of the isolating switch from continuously rising, delaying the time of power failure maintenance of the isolating switch due to the heating of the contacts, ensuring the continuous power supply to important users at critical time, not only solving the problem of emergency shutdown caused by the heating of the moving and fixed contacts of the high-voltage isolating switch during operation, but also improving the reliability of power supply of power transformation equipment, meanwhile, the good social image of power supply enterprises is established.
Every touches the outside of finger 2 and covers there is the insulating pad, is provided with elasticity outside every insulating pad and embraces and press from both sides 3, and every elasticity is embraced and is pressed from both sides 3 and is used for making two relative touch fingers 2 draw close each other, for touching finger 2 and provide the clamp force, makes touch finger 2 and isolator conductive loop sound contact conducting rod laminating contact, avoids contact failure to cause local contact resistance too big and then cause to generate heat and seriously influence the reposition of redundant personnel effect. The insulating pad can keep apart and touch 2 and elasticity embrace and press from both sides 3, prevents that the electric current from touching 2 flow directions elasticity armful from pressing from both sides 3, prevents that elasticity armful from pressing from both sides 3 and losing elasticity because of through-flow back annealing, causes the clamp force to reduce, makes emergency device's contact and isolator conducting rod contact failure and influences emergent effect.
Still be provided with operation link plate 4 on the emergency device, operation link plate 4 adopts insulating material to make, and operation link plate 4 is used for installing emergency device on the conducting rod of isolator conductive loop sound contact through the insulator spindle with the insulator spindle cooperation. Can prolong the distance that the staff can operate through the insulator spindle, avoid the staff closely to contact the electrified body, guarantee staff's safety.
Because the sizes of the dynamic and static contact conducting rods of the conductive loops of the isolating switches of different models are different, the dynamic and static contact conducting rods of the conductive loops of the isolating switches with large rated current can be larger than the dynamic and static contact conducting rods of the conductive loops of the isolating switches with small rated current, so that the size of the dynamic and static contact conducting rods of the conductive loops of the isolating switches of different models is suitable for emergency devices, in some preferred embodiments, the bolts are adjusting bolts, the distance between the two guide rows 1 can be adjusted by adjusting the lengths of the adjusting bolts, and the clamping degree of the emergency devices can be ensured to be always in the best matching state.
In some preferred embodiments, the straight bottom of the top of each contact finger 2 is bent outwards to enable the distance between the bottoms of the two opposite contact fingers 2 to be reduced from bottom to top in sequence, so that the contact fingers 2 can move downwards from the top ends of the movable and fixed contact conductive rods of the conductive loop of the isolating switch to clamp the conductive rods, workers can aim at the movable and fixed contact conductive rods of the conductive loop of the isolating switch when the emergency device is installed, and the installation difficulty is reduced.
In order to improve the shunting effect, in some preferred embodiments, the diversion row 1 is an aluminum row or a silver-plated copper row with good conductivity, and the size of the diversion row 1 is set according to the rated current of the isolating switch needing emergency treatment.
Aiming at the isolating switch with the rated current of 630A, an aluminum bar with the length of 500 mm, the width of 40 mm and the thickness of 4 mm or a silver-plated copper bar with the length of 500 mm, the width of 30 mm and the thickness of 5 mm can be selected.
Aiming at the isolating switch with the rated current of 1000A, an aluminum bar with the length of 500 mm, the width of 50 mm and the thickness of 5 mm or a silver-plated copper bar with the length of 500 mm, the width of 40 mm and the thickness of 4 mm can be selected.
Aiming at the isolating switch with the rated current of 1250A, an aluminum bar with the length of 500 mm, the width of 60 mm and the thickness of 6 mm or a silver-plated copper bar with the length of 500 mm, the width of 50 mm and the thickness of 5 mm can be selected.
Aiming at an isolating switch with the rated current of 1600A, an aluminum bar with the length of 500 mm, the width of 60 mm and the thickness of 8 mm or a silver-plated copper bar with the length of 500 mm, the width of 60 mm and the thickness of 6 mm can be selected.
Aiming at the isolating switch with the rated current of 2000A, an aluminum bar with the length of 500 mm, the width of 80 mm and the thickness of 8 mm or a silver-plated copper bar with the length of 500 mm, the width of 60 mm and the thickness of 8 mm can be selected.
Aiming at the isolating switch with the rated current of 2500A, an aluminum bar with the length of 500 mm, the width of 100 mm and the thickness of 8 mm or a silver-plated copper bar with the length of 500 mm, the width of 80 mm and the thickness of 8 mm can be selected.
If an aluminum guide row is selected, the edge needs to be chamfered by 30 degrees. If the copper flow guide row is selected, the edge needs to be chamfered at 30 degrees, the surface of the copper flow guide row 1 needs to be subjected to silver plating treatment, the thickness of a silver plating layer is not less than 20 mu m, the hardness is not lower than 120 HV, and the adhesive force between the silver plating layer and the surface of the copper flow guide row 1 is good.
The contact finger 2 is made of an electrical copper material, the electrical copper material is good in conductivity, the shunt effect can be improved, and the size of the contact finger 2 is set according to the rated current of the isolating switch needing emergency treatment. The isolating switch with rated current of 630A and 1000A can select a contact finger 2 with 3 branches at the bottom; the isolating switch with rated current of 1250A and 1600A can select 4 bifurcate contact fingers 2 at the bottom; the isolating switch with the rated current of 2000A and 2500A can select the contact finger 2 with 5 branches at the bottom.
In some preferred embodiments, the elastic holding clamp 3 is made of a non-magnetic conductive spring steel plate, the width of the elastic holding clamp 3 is set according to the width of the contact finger 2, the thickness of the non-magnetic conductive spring steel plate is 1-1.5 mm, two thirds of the elastic holding clamp 3 from bottom to top are processed into an inward-bending arc shape to provide clamping force for the contact finger 2, so that the contact finger 2 is in contact with the moving and static contact conductive rods of the conductive loop of the isolating switch.
Preferably, the outer surface of the diversion row 1 is provided with an insulating layer, so that the conduction of the diversion row 1 is not influenced to be shunted, the outer surface is uncharged, the safety of workers can be protected, and the occurrence of electric shock accidents is avoided.
The utility model provides a high voltage isolator conductive loop emergency device can install this emergency device on the conducting rod of sound contact in the isolator conductive loop under the isolator circumstances of not having a power failure. The contact finger 2 and the conducting rod form a passage to shunt a fault area, the temperature of a contact of the isolating switch is inhibited from continuously rising, the time of power failure maintenance of the isolating switch due to the heating of the contact is delayed, the continuous power supply to important users at key moments is ensured, the problem that the isolating switch is forced to be stopped urgently due to the heating of a moving contact and a fixed contact of the high-voltage isolating switch in operation is solved, the reliability of power supply of the substation equipment is improved, meanwhile, the good social image of a power supply enterprise is established, and the high-voltage isolating switch has strong practicability in the technical field of power grids.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. The utility model provides a high voltage isolator conductive loop emergency device, its characterized in that, emergency device includes that two parallel arrangement's water conservancy diversion are arranged, the both ends of two water conservancy diversion rows are respectively through bolted connection, the outside of two water conservancy diversion rows is passed through two bolt vertical connections have and touch the finger, every outside that touches the finger covers has insulating pad, every insulating pad is provided with elasticity outside embracing clamp, every elasticity is embraced and is pressed from both sides and be used for making two relative touch the finger draw close each other, still be provided with the operation link plate on the emergency device, the operation link plate is used for cooperating with the insulator spindle will emergency device installs on the conducting rod of isolator conductive loop sound contact, shunts the fault area, and the suppression isolator contact temperature continues to rise, delays the time that isolator has a power failure to overhaul because of the contact generates heat.
2. The emergency device for the conductive loop of the high-voltage isolating switch according to claim 1, wherein the bolt is an adjusting bolt, and the distance between the two guide rows can be adjusted by adjusting the length of the adjusting bolt, so that the emergency device is suitable for sizes of the movable and fixed contact conductive rods of the conductive loops of the isolating switches of different models.
3. The emergency device for the conductive loop of the high-voltage isolating switch according to claim 1, wherein the straight bottom of the top of the contact finger is bent outwards so that the distance between the bottoms of the two opposite contact fingers is reduced from bottom to top, thereby facilitating the downward movement of the contact finger from the top end of the conductive rod of the movable and fixed contacts of the conductive loop of the isolating switch to clamp the conductive rod.
4. The emergency device for the conductive loop of the high-voltage isolating switch according to claim 1, wherein the guide bar is an aluminum bar or a silver-plated copper bar, and the size of the guide bar is set according to the rated current of the isolating switch needing emergency treatment.
5. The emergency device of claim 1, wherein the contact finger is made of an electrical copper material, and the size of the contact finger is set according to the rated current of the disconnector needing emergency treatment.
6. The emergency device according to claim 5, wherein the elastic clasping clamp is made of a non-magnetic spring steel plate, and the width of the elastic clasping clamp is set according to the width of the contact finger.
7. The emergency device according to claim 6, wherein two thirds of the elastic clasping clamp from bottom to top is processed into an inward curved arc shape to provide a clamping force for the contact finger, so that the contact finger is in contact with the moving and static contact conductive rods of the conductive loop of the disconnecting switch.
8. The emergency device for the conductive loop of the high-voltage isolating switch according to claim 1, wherein the outer surface of the flow guide exhaust is provided with an insulating layer.
9. The emergency device for the conductive loop of the high-voltage isolating switch according to claim 1, wherein the operation hanging plate is made of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121768500.1U CN214898223U (en) | 2021-07-31 | 2021-07-31 | Emergency device for conductive loop of high-voltage isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121768500.1U CN214898223U (en) | 2021-07-31 | 2021-07-31 | Emergency device for conductive loop of high-voltage isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214898223U true CN214898223U (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121768500.1U Active CN214898223U (en) | 2021-07-31 | 2021-07-31 | Emergency device for conductive loop of high-voltage isolating switch |
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| Country | Link |
|---|---|
| CN (1) | CN214898223U (en) |
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2021
- 2021-07-31 CN CN202121768500.1U patent/CN214898223U/en active Active
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