CN107508237B - Automatic wiring device for upper-closing type ground wire ice melting - Google Patents
Automatic wiring device for upper-closing type ground wire ice melting Download PDFInfo
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- CN107508237B CN107508237B CN201710094962.1A CN201710094962A CN107508237B CN 107508237 B CN107508237 B CN 107508237B CN 201710094962 A CN201710094962 A CN 201710094962A CN 107508237 B CN107508237 B CN 107508237B
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- protective cover
- closing
- opening
- transmission mechanism
- ground wire
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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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/16—Devices for removing snow or ice from lines or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses an upper-closing type ground wire ice melting automatic wiring device which comprises an upper-closing type electricity taking device, a transmission mechanism, an opening and closing electric conductor, a falling type protective cover and an electric control system, wherein the transmission mechanism is arranged on a platform on the side face of a tower body, one end of the opening and closing electric conductor is connected with an output end flange plate of the transmission mechanism, the other end of the opening and closing electric conductor is provided with an adjustable contact, the upper-closing type electricity taking device is arranged on a jumper suspension clamp of an insulator jumper string, a plurality of hinge type clamps of the upper-closing type electricity taking device are respectively connected with split wires, the falling type protective cover is arranged on the platform on the outer side of the tower body and is arranged below the transmission mechanism, and the electric control system controls closing and opening of the opening and closing electric conductor. The upper-closing type ground wire deicing automatic wiring device is used for a power transmission line needing ground wire deicing, and is adopted when the length of a cross arm of an iron tower is smaller than that of a jumper string.
Description
Technical Field
The invention relates to the technical engineering field of overhead transmission lines, in particular to an upper-closing type ground wire ice melting automatic wiring device.
Background
In cold winter, partial transmission lines in south China are easy to be iced. Uneven icing on the guide wire and the ground wire can lead to the iron tower to incline or bend, and when the design bearing capacity is exceeded, the breakage of the guide wire and the ground wire, the falling of hardware fittings and the like can occur, and the iron tower can be seriously collapsed. Unlike conductors that can withstand partial freezing by the heat energy generated by the load current, overhead ground wires typically have ice coating thicknesses far exceeding that of power conductors.
In year 1 of 2008, iron tower collapse accidents caused by large-area icing of southern power transmission lines in China are remembered as new.
The 2 nd month in 2008, the organization and attack group of the south electric network technology research center performs feasibility research on the ac/dc ice melting scheme of the ac/dc electric transmission line of each voltage class of the south electric network. Researches show that the ice melting direct current equipment is arranged on the junction substation, so that ice melting of all incoming and outgoing lines of the junction substation can be realized.
In 2013, the south-net ultra-high voltage transmission company, the south-China electric power design institute and the Nanjing line equipment limited company jointly develop a side-closing type ground wire ice melting automatic wiring device, and the side-closing type ground wire ice melting automatic wiring device is successfully installed in 500kV wiring in 2013, 11 months and 12 months.
Along with the increasing number of the automatic wire connection devices for ground wire ice melting, the tower type of the installation device is also increased gradually, and particularly in the direct current transmission line engineering, the following situations occur in an iron tower where the automatic wire connection devices for ground wire ice melting are required to be installed: 1) The jumper string is longer, about 8-9 meters; 2) The two cross arms differ significantly in length due to the corner.
For the cross arm with the arm length longer than the jumper string, the scheme of the automatic wire connection device for ice melting of the side-closing ground wire is still adopted; while for a short arm cross arm there is not enough space to install a side-by-side device. Therefore, aiming at the structural characteristics of the short arm cross arm, a proper ground wire ice melting automatic wiring device needs to be developed.
Disclosure of Invention
The technical problem to be solved by the invention is that when the length of the short arm cross arm is smaller than that of the jumper string, enough space is not available for installing the side-closing type ground wire ice melting automatic wiring device.
The invention provides an upper-closing type ground wire ice melting automatic wiring device which comprises an upper-closing type electricity taking device, a transmission mechanism, an opening and closing electric conductor, a falling type protective cover and an electric control system, wherein the transmission mechanism is arranged on a platform on the side face of a tower body, one end of the opening and closing electric conductor is connected with an output end flange of the transmission mechanism, the other end of the opening and closing electric conductor is provided with an adjustable contact, the upper-closing type electricity taking device is arranged on a jumper suspension clamp of an insulator jumper string, a plurality of hinge clamps of the upper-closing type electricity taking device are respectively connected with split conductors, the opening and closing electric conductor is connected with the upper-closing type electricity taking device when being closed, the falling type protective cover is connected with the falling type protective cover, the falling type protective cover is arranged on the platform on the outer side of the tower body and arranged below the transmission mechanism, the end contact of the opening and closing electric conductor is protected from rain and snow, and the electric control system controls closing and opening of the opening and closing electric conductor.
The upper-closing type ground wire deicing automatic wiring device is used for a power transmission line needing ground wire deicing, and is adopted when the length of a cross arm of an iron tower is smaller than that of a jumper string.
The invention discloses an upper-closing type ground wire ice melting automatic wiring device, wherein an upper-closing type electricity taking device is arranged on a jumper suspension clamp of an insulator jumper string, and an opening of the upper-closing type ground wire ice melting automatic wiring device is downward and is used for acquiring current on a wire bundle and transmitting the current to an opening-closing electric conductor. The transmission mechanism is arranged on a platform of which the side surface of the iron tower avoids the foot nails and is positioned on the large side or the small side of the tower body or on one side of the line trend, and the platform and the insulator jumper wire string are at the same horizontal height. The transmission mechanism controls the switching-on and switching-off of the switching-on and switching-off conductors through the forward and reverse rotation of the direct current motor.
The upper-closing type electricity taking device comprises a contact finger assembly, a guide plate, a protective cover, a wire clamp assembly, a corner joint and a connecting assembly; the connecting components are arranged at two sides of the jumper suspension clamp to realize connection with the insulator jumper string, and the weight pieces are symmetrically arranged at two sides of the connecting components; the corner joint is installed at the coupling assembling lower extreme, and the corner joint lower extreme passes through the channel-section steel and is connected with the protection casing bottom plate, still installs the fastener subassembly on the protection casing bottom plate, and the protection casing includes the protection casing bottom plate, is provided with contact finger subassembly and deflector in the protection casing inside.
The contact finger assembly comprises a plurality of copper blocks which are arranged side by side at intervals, at least two contact fingers are symmetrically arranged on each copper block, threaded holes are formed in the positions, located between the two contact fingers, of the copper blocks for installing the copper blocks, waist-shaped clamping grooves are formed in each contact finger, tension springs are arranged in the clamping grooves through pin shafts, and the tension springs are connected between the two opposite contact fingers; the guide plate is splayed and is arranged on the outer side of the contact finger assembly; the opening of the protective cover faces downwards, the protective cover is arranged at the periphery of the guide plate and the contact finger assembly, the lower end of the guide plate is connected with the protective cover through a set screw, the bottom plate of the protective cover is fixedly connected with the channel steel on the outer side and the copper block on the inner side through a fastener, meanwhile, the outer side of the bottom plate of the protective cover is fixedly connected with a drainage wire clamp of the wire clamp assembly to obtain current, and the current is transmitted to the contact finger through the fixedly connected copper block; the lower end of the corner joint is connected with channel steel on the bottom plate of the protective cover, and the upper end of the corner joint is connected with the connecting component, so that the angle deflection between the contact finger and the jumper wire is realized; the wire clamp assembly comprises a hinge wire clamp and a drainage wire clamp, the drainage wire clamp is connected to the outer side of the bottom plate of the protective cover, and the other end of the drainage wire clamp is connected with the hinge wire clamps through a plurality of wires respectively.
The upper-closing type electricity taking device is arranged on a jumper suspension clamp of an insulator jumper string, and has the functions of acquiring current on a wire bundle and transmitting the current to the opening and closing type electricity taking device, wherein the upper part of a corner joint is connected with a connecting component, the lower part of the corner joint is connected with channel steel on a bottom plate of a protective cover, so that the angle deflection between the upper-closing type electricity taking device and the jumper can be realized, and the opening and closing type electricity taking device rotates upwards to connect a contact of the opening and closing type electricity taking device to the upper-closing type electricity taking device, so that ice melting can be realized.
The contact finger assembly comprises contact fingers, copper blocks, pin shafts and tension springs, the two contact fingers are arranged on two sides of each copper block to form a pair of contact fingers, overcurrent can be achieved after the contact heads are correctly pushed in, one or more pairs of contact fingers are in contact with the contact heads for overcurrent after the device is determined to be switched on according to the ice melting current requirement of a circuit, the contact fingers adopt a mode that a plurality of pairs of contact fingers are uniformly distributed at intervals, the two pairs of contact fingers can be arranged on one copper block, and intervals are reserved between the copper blocks.
One end of the wire clamp assembly obtains current on a wire through a hinged wire clamp, the other end of the wire clamp assembly transmits the current out through a drainage wire clamp, and the middle of the wire clamp assembly carries out current transition through a soft streamline; one end of the wire clamp assembly is connected with the bottom plate of the protective cover, and the other end of the wire clamp assembly is used for clamping a wire through a plurality of hinge type wire clamps to obtain ice melting current on the wire bundle.
Further, the contact finger is fixed on the copper block through a fixing nut positioned on the side face of the copper block, a clamp is installed on the side face of the copper block through the fixing nut, the opening of each hinge type wire clamp is fastened through a bolt and a nut, a sealing ring is arranged at the opening of each hinge type wire clamp, and the sealing ring is positioned on the outer side of the bolt; the outer side of one end of each wire connected with the hinge type wire clamp is also provided with a protective sleeve, one end of each wire connected with the drainage wire clamp is also provided with a protective sleeve, and the protective sleeves are aluminum tubes; the corner joint is further provided with a jacking structure, the jacking structure comprises a jacking bolt and a jacking cover plate, the jacking cover plate is arranged above the corner joint to prop against the lower plane of the connecting assembly, the jacking bolt is connected with an adjusting mechanism of the jacking cover plate, and lifting of the jacking cover plate is adjusted through the jacking bolt.
The installation of the jacking structure can ensure the stability of closing, and the jacking bolts of the corner connectors are adjusted to adjust the positions of the jacking cover plates so as to jack the lower planes of the connecting assemblies; a plurality of weight pieces are arranged on two sides of the connecting assembly, so that the jumper wire string keeps original weight, the wind deflection and electrical requirements of circuit design are met, and meanwhile, the contact fingers are in an equilibrium state.
The falling protective cover comprises a protective umbrella and a protective box, wherein the protective umbrella comprises an umbrella-shaped wrapping hoop and a sealing ring, the sealing ring is arranged above the umbrella-shaped wrapping hoop, the umbrella-shaped wrapping hoop is connected to a conducting rod of the open-close conductor, the sealing ring is sleeved on the conducting rod and is tightly attached to the conducting rod, and the sealing ring is arranged above the umbrella-shaped wrapping hoop; the protection box comprises a box body, a revolving door, a baffle rod, a proximity switch assembly and a torsion spring, wherein an opening is formed in one side of the box body, the opening of the box body is splayed, the revolving door is arranged on one side of the opening of the box body, an umbrella-shaped wrapping hoop is higher than the revolving door and is positioned above the opening of the box body, a rotating shaft of the revolving door is rotatably arranged on one side of the box body, the torsion spring is arranged on the rotating shaft, one end of the torsion spring is fixed on the box body, the other end of the torsion spring is fixed on the rotating shaft, one end of the baffle rod is arranged on the rotating shaft and is positioned above the torsion spring, a stop block is further arranged on the outer side of a connecting end of the baffle rod, the upper end and the lower end of the rotating shaft are all extended out of the box body and are fixedly connected with the revolving door, a baffle plate is arranged on the box body, a lower rotating shaft is further connected to the lower end of the rotating shaft, one end of the lower support rod is fixedly connected with the bottom of the revolving door, and the other end of the lower support rod is connected with the lower rotating shaft.
The further improvement is that a plurality of universal wheels are also arranged between the revolving door and the box body, and a grounding wire is connected between the baffle rod and the box body.
The falling type protective cover realizes the comprehensive protection of the contact of the open-close conductive device, the umbrella-shaped wrapping hoop can be arranged on the conductive rod of the open-close conductive device in a buckling mode, and the umbrella-shaped wrapping hoop protects from the upper part and prevents rain and snow from entering from an opening above the protective box; the sealing ring is arranged above the umbrella-shaped wrapping hoop and is tightly attached to prevent rainwater from penetrating along the conducting rod of the open-close conductor. The baffle plate is arranged on the box body and positioned at the position where the suspension end of the baffle rod rotates to be switched on, and the baffle plate can be positioned at the edge of one side of the opening of the box body and positioned at the position where the suspension end of the baffle rod rotates to pass. The protection box has the function of realizing comprehensive rain and snow freezing protection of the contact of the open-close conductor and simultaneously realizing the automatic open-close function of the protection cover. When the switch is closed, the torsion spring enables the revolving door to be opened along with the rotation of the opening and closing electric conductor, the baffle rod touches the baffle plate and then opens the door in place, and the revolving door stops moving after opening the door in place; when the switch is opened, the rotation of the switch conductor pushes the baffle rod to rotate, so that the revolving door is driven to rotate to be closed, the proximity switch works after the switch is opened in place, and the revolving door is closed in place.
The universal wheels play a role in supporting the freezing on the revolving door, and are beneficial to flexible rotation of the revolving door; in order to avoid the induced voltage existing on the ground wire when the switch is opened in place, a grounding design is also performed on the falling type protective cover. The earthing design is realized through connecting the both ends of earth conductor respectively on shelves pole and box, owing to the persistence of moment of torsion on the torsional spring when opening the floodgate in place for shelves pole and conducting rod last effective contact, with the electric conductor that opens and shuts of ground connection, the induced voltage on it can effectively pass to the box on, and the box is finally connected with the iron tower, passes to the iron tower promptly, accomplishes the ground connection.
When the switch is closed, the falling type protective cover revolving door is opened and stopped after the switch conductor is turned out; when the switch is opened, the rotary door is turned and closed along with the fact that the switch conductor enters the falling type protective cover, and the action is stopped after the rotary door is closed in place. At this moment, the open-close conductor is vertically downward along the tower body, and the contact is completely protected in the falling type protective cover, so that the invasion of rain, snow and freezing is effectively avoided. Meanwhile, the falling protective cover is also grounded, and after the switch is opened in place, the falling protective cover can be effectively grounded, so that the induced voltage of the ground wire is effectively eliminated.
The electric control system comprises a control box, a direct-current power supply, a power line, a signal line and a locking line cabinet, wherein the control box is connected with the direct-current power supply, the power line and the signal line respectively, the locking line cabinet is fixed on the tower body, the power line and the signal line are placed in the locking line cabinet for storage after being used, and the other ends of the power line and the signal line are connected to the transmission mechanism. The electric control system is used for completing the electric connection of the device and comprises a control box, a direct-current power supply, a power line, a signal line, a locking cabinet and the like, and after the control box is connected with the power supply, the power line and the signal line, the control box can be operated to realize the closing and opening of the upper closing type ground wire ice melting automatic wiring device.
The transmission mechanism comprises a turbine vortex rod speed reducer with a self-locking function, and a speed reducer protective cover is arranged on the outer side of the turbine vortex rod speed reducer of the transmission mechanism; one end of the opening and closing electric conductor, which is connected with the transmission mechanism, is also connected to the tower body. The transmission mechanism comprises a turbine vortex rod speed reducer with a self-locking function, so that the opening and closing electric conductor always keeps a thrust state after the electric conductor is closed in place; switching on in-place control is carried out through switching on force; meanwhile, voltage isolation design and transmission shaft flexible structure design are also carried out.
One end of the opening and closing electric conductor is arranged on a flange plate at the output end of the transmission mechanism and is connected with the ground wire, the other end of the opening and closing electric conductor is provided with an adjustable contact, and the opening and closing electric conductor is connected with the upper closing type electric taking device after closing the electric conductor, so that the butt joint of the electric conductor and the ground wire is realized.
The upper-closing type electricity taking device adopts a plurality of independent hinge type wire clamps (the number of which is consistent with that of jumper wires) to grip wires to obtain current, and the current is led to the contact fingers through the bottom plate of the protective cover of the electricity taking device. The upper closing type electricity taking device also considers the correct closing design when the space position deviation of the contact finger and the contact is generated due to factors such as unbalanced tension of ice coating of the lead, wind deflection and the like, and the contact finger protection design that the closing effect and the overcurrent effect are not influenced by the rainwater freezing environment.
The function of the opening and closing electric conductor is: and when ice melting, the connection with the upper-combined electricity taking device and the ground wire is completed, so that the ground wire is ensured to acquire current from the wire bundle. After the ice melting is finished, the upper-closing type ground wire ice melting automatic wiring device is in an opening and closing state, the opening and closing electric conductor vertically faces downwards along the tower body, and the contact is placed in the falling type protective cover for protection.
In addition, the automatic wiring device for upper closing type ground wire ice melting also designs a manual closing plan. When the control box fails, a worker can climb the tower to the transmission mechanism, open the motor protection cover, take out the crank and manually close and open the brake. The scheme provides one-step guarantee for successful switching-on and switching-off of the device.
After the switch is opened in place, the falling type protective cover protects the contact at the end part of the open-close conductive device from rain and snow, is arranged on a platform at the outer side of the tower body and is arranged below the transmission mechanism.
The electric control system is responsible for switching on and switching off the device. The power line and the signal line are led from the transmission mechanism and the falling protective cover to the lower part of the tower along the iron tower and are fixed by special clamps. When not used at ordinary times, the power line and the signal line are folded and put into the lockwire cabinet of the first cross arm of the iron tower, which is close to the ground, for protection.
The invention discloses an upper-closing type ground wire ice melting automatic wiring device, which is designed for improving an iron tower or a wiring device aiming at the structural characteristics of a short arm cross arm. When the ground wire needs to be iced, a worker realizes the butt joint of the ground wire and the lead, namely, the current on the lead bundle is acquired and is conducted to the ground wire.
When the ground wire ice melting is needed, a worker takes down the power wire and the signal wire joint from the wire locking cabinet at the first cross arm of the iron tower to the lower part of the tower and is connected with the power supply to the control box of the electric control system, the control box can be operated at the bottom of the tower to switch on the device, and the transmission mechanism drives the opening and closing electric conductor to rotate upwards to open the upward-closing electric extractor, so that connection between the ground wire and the guide wire is realized. At this time, the ice melting is performed by energizing.
After ice melting is finished, the control box is operated at the bottom of the tower to open the device, the transmission mechanism drives the opening and closing electric conductor to rotate downwards, the contact of the opening and closing electric conductor enters the falling type protective cover, the action is stopped after the opening and closing is in place, and meanwhile, the rain and snow protection can be carried out, and the ground is connected.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention in an open-gate in-place state;
FIG. 2 is a schematic diagram of the switch-on in place state of the present invention;
FIG. 3 is a schematic diagram of the transmission mechanism of the present invention;
FIG. 4 is a schematic diagram of the structure of the open-close conductive device of the present invention;
FIG. 5 is a front view of the top-up power extractor of the present invention;
FIG. 6 is a left side view of the snap-on power extractor of the present invention;
FIG. 7 is a front view of the finger assembly, guide plate and shield of the present invention;
FIG. 8 is a left side view of the finger assembly, guide plate and shield of the present invention;
FIG. 9 is a schematic view of the structure of the finger assembly of the present invention;
FIG. 10 is a schematic structural view of the wire clamp assembly of the present invention;
FIG. 11 is a schematic view of the structure of the drop-down protective cover of the present invention;
FIG. 12 is a front view of the case of the present invention;
FIG. 13 is a left side view of the case of the present invention;
FIG. 14 is a top view of the case of the present invention;
FIG. 15 is a front view of an umbrella band of the present invention;
FIG. 16 is a left side view of an umbrella band of the present invention;
FIG. 17 is a top view of an umbrella band of the present invention;
FIG. 18 is a front view of the lever of the present invention;
FIG. 19 is a left side view of the lever of the present invention;
the power-saving type power-saving switch comprises a 1-up type power-saving switch, a 2-transmission mechanism, a 3-opening and closing conductor, a 4-falling type protective cover, a 5-tower body, a 6-contact, a 7-insulator jumper string, an 8-jumper suspension clamp, a 9-hinge type clamp, a 10-guide plate, a 11-protective cover, a 12-protective cover bottom plate, a 13-corner connector, a 14-connection component, a 15-weight piece, a 16-channel steel, a 17-copper block, a 18-contact finger, a 19-clamping groove, a 20-pin shaft, a 21-tension spring, a 22-drainage clamp, a 23-umbrella-shaped wrapping hoop, a 24-sealing ring, a 25-box body, a 26-rotating door, a 27-baffle rod, a 28-approach switch component, a 29-torsion spring, a 30-lower support rod, a 31-lower rotating shaft, a 32-opening, a 33-baffle, a 34-baffle, a 35-rotating shaft, a 36-universal wheel, a 37-grounding wire, a 38-control box, a 39-direct current power supply, a 40-power wire, a 41-signal wire and a 42-locking wire cabinet.
Detailed Description
The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings.
In a power transmission line, particularly in a direct current line, the length of an insulator jumper string is long (usually about 9 meters), and meanwhile, due to a corner, the length of a certain inner angle side cross arm is shorter than the length of the insulator jumper string. Aiming at the structural characteristics of the short arm cross arm, an upper-closing type ground wire ice melting automatic wiring device is developed.
As shown in the figure, the upper-closing type ground wire ice melting automatic wiring device comprises an upper-closing type electric taking device 1, a transmission mechanism 2, an opening and closing electric conductor 3, a falling type protective cover 4 and an electric control system, wherein the transmission mechanism 2 is arranged on a platform on the side face of a tower body 5, one end of the opening and closing electric conductor 3 is connected with an output end flange of the transmission mechanism 2, the other end of the opening and closing electric conductor is provided with an adjustable contact 6, the upper-closing type electric taking device 1 is arranged on a jumper suspension wire clamp 8 of an insulator jumper wire string 7, a plurality of hinge wire clamps 9 of the upper-closing type electric taking device 1 are respectively connected with split wires, the opening and closing electric conductor 3 is connected with the upper-closing type electric taking device 1, the falling type protective cover 4 is connected with the falling type protective cover 4 when opening and closing, the falling type protective cover 4 is arranged on a platform on the outer side of the tower body 5 and arranged below the transmission mechanism 2, and the electric control system controls the opening and closing of the opening and closing electric conductor 3.
The upper combined type electricity taking device 1 comprises a contact finger assembly, a guide plate 10, a protective cover 11, a wire clamp assembly, a corner joint 13 and a connecting assembly 14; the connecting components 14 are arranged at two sides of the jumper suspension clamp 8 to realize connection with the insulator jumper string 7, and the weight pieces 15 are symmetrically arranged at two sides of the connecting components 14; the corner joint 13 is installed at coupling assembling 14 lower extreme, and the corner joint 13 lower extreme is connected with protection casing bottom plate 12 through channel-section steel 16, still installs the fastener subassembly on protection casing bottom plate 12, and protection casing 11 includes protection casing bottom plate 12, is provided with touch finger subassembly and deflector 10 in protection casing 11 inside.
The contact finger assembly comprises a plurality of copper blocks 17 which are arranged side by side at intervals, at least two contact fingers 18 are symmetrically arranged on each copper block 17, threaded holes are formed in the copper block 17 and positioned between the two contact fingers 18 for installing the copper block 17, waist-shaped clamping grooves 19 are formed in each contact finger 18, tension springs 21 are arranged in the clamping grooves 19 through pin shafts 20, and the tension springs 21 are connected between the two opposite contact fingers 18; the guide plate 10 is arranged on the outer side of the contact finger assembly in a splayed shape; the protective cover 11 is downwards opened and is arranged on the periphery of the guide plate 10 and the contact finger assembly, the lower end of the guide plate 10 is connected with the protective cover 11 through a set screw, the protective cover bottom plate 12 is tightly connected with the outside channel steel 16 and the inside copper block 17 through a fastener, meanwhile, the outside of the protective cover bottom plate 12 is tightly connected with the drainage wire clamp 22 of the wire clamp assembly to obtain current, and the current is transmitted to the contact finger 18 through the tightly connected copper block 17; the lower end of the corner joint 13 is connected with the channel steel 16 on the bottom plate 12 of the protective cover, and the upper end of the corner joint is connected with the connecting component 14, so that the angle deflection between the contact finger 18 and the jumper wire is realized; the wire clamp assembly comprises a hinge wire clamp 9 and a drainage wire clamp 22, wherein the drainage wire clamp 22 is connected to the outer side of the protective cover bottom plate 12, and the other end of the drainage wire clamp 22 is respectively connected with the hinge wire clamps 9 through a plurality of wires.
The falling protective cover 4 comprises a protective umbrella and a protective box, wherein the protective umbrella comprises an umbrella-shaped hoop 23 and a sealing ring 24, the sealing ring 24 is arranged above the umbrella-shaped hoop 23, the umbrella-shaped hoop 23 is connected to a conducting rod of the opening and closing electric conductor 3, the sealing ring 24 is sleeved on the conducting rod and is tightly attached to the conducting rod, and the sealing ring 24 is arranged above the umbrella-shaped hoop 23; the protection box comprises a box body 25, a revolving door 26, a baffle rod 27, a proximity switch assembly 28 and a torsion spring 29, wherein an opening 32 is formed in one side of the box body 25, the opening 32 of the box body 25 is splayed, the revolving door 26 is installed on one side of the box body 25 where the opening 32 is formed, an umbrella-shaped wrapping hoop 23 is higher than the revolving door 26 and is located above the opening 32 of the box body 25, a rotating shaft 35 of the revolving door 26 is rotatably installed on one side of the box body 25, the torsion spring 29 is installed on the rotating shaft 35, one end of the torsion spring 29 is fixed on the box body 25, the other end of the torsion spring 29 is fixed on the rotating shaft 35, one end of the baffle rod 27 is installed on the rotating shaft 35 and located above the torsion spring 29, a stop 33 is further arranged on the outer side of the connecting end of the baffle rod 27, the upper end and the lower end of the rotating shaft 35 extend out of the box body 25 and are fixedly connected with the revolving door 26, a baffle 34 is arranged on the box body 25 and located at the position where an empty end of the baffle rod 27 rotates to a closing position, a lower rotating shaft 31 is further connected with one end of the lower rotating shaft 35, one end of the lower supporting rod 30 is fixedly connected with the bottom of the revolving door 35, and the other end of the lower rotating shaft 31 is fixedly connected with the lower rotating shaft 31.
Further, a plurality of universal wheels 36 are installed between the revolving door 35 and the case 25, and a ground wire 37 is connected between the lever 27 and the case 25.
The electrical control system comprises a control box 38, a direct-current power supply 39, a power line 40, a signal line 41 and a locking line cabinet 42, wherein the control box 38 is respectively connected with the direct-current power supply 39, the power line 40 and the signal line 41, the locking line cabinet 42 is fixed on the tower body 5, the power line 40 and the signal line 41 are placed in the locking line cabinet 42 for storage after being used, and the other ends of the power line 40 and the signal line 41 are connected to the transmission mechanism 2.
Further, the transmission mechanism 2 comprises a turbine vortex rod speed reducer with a self-locking function, and a speed reducer protective cover is arranged on the outer side of the turbine vortex rod speed reducer of the transmission mechanism; the connecting end of the opening and closing electric conductor 3 and the transmission mechanism 2 is also connected to the tower body 5.
The upper-closing type ground wire deicing automatic wiring device is used for a power transmission line needing ground wire deicing, and is adopted when the length of a cross arm of an iron tower is smaller than that of a jumper string.
The invention discloses an upper-closing type ground wire ice melting automatic wiring device, wherein an upper-closing type electricity taking device is arranged on a jumper suspension clamp of an insulator jumper string, and an opening of the upper-closing type ground wire ice melting automatic wiring device is downward and is used for acquiring current on a wire bundle and transmitting the current to an opening-closing electric conductor. The transmission mechanism is arranged on a platform of which the side surface of the iron tower avoids the foot nails and is positioned on the large side or the small side of the tower body or on one side of the line trend, and the platform and the insulator jumper wire string are at the same horizontal height. The transmission mechanism controls the switching-on and switching-off of the switching-on and switching-off conductors through the forward and reverse rotation of the direct current motor.
When the switch is closed, the falling type protective cover revolving door is opened and stopped after the switch conductor is turned out; when the switch is opened, the rotary door is turned and closed along with the fact that the switch conductor enters the falling type protective cover, and the action is stopped after the rotary door is closed in place. At this moment, the open-close conductor is vertically downward along the tower body, and the contact is completely protected in the falling type protective cover, so that the invasion of rain, snow and freezing is effectively avoided. Meanwhile, the falling protective cover is also grounded, and after the switch is opened in place, the falling protective cover can be effectively grounded, so that the induced voltage of the ground wire is effectively eliminated.
The electric control system is used for completing the electric connection of the device and comprises a control box, a direct-current power supply, a power line, a signal line, a locking cabinet and the like, and after the control box is connected with the power supply, the power line and the signal line, the control box can be operated to realize the closing and opening of the upper closing type ground wire ice melting automatic wiring device.
The transmission mechanism comprises a turbine vortex rod speed reducer with a self-locking function, so that the opening and closing electric conductor always keeps a thrust state after the electric conductor is closed in place; switching on in-place control is carried out through switching on force; meanwhile, voltage isolation design and transmission shaft flexible structure design are also carried out.
One end of the opening and closing electric conductor is arranged on a flange plate at the output end of the transmission mechanism and is connected with the ground wire, the other end of the opening and closing electric conductor is provided with an adjustable contact, and the opening and closing electric conductor is connected with the upper closing type electric taking device after closing the electric conductor, so that the butt joint of the electric conductor and the ground wire is realized.
The upper-closing type electricity taking device adopts a plurality of independent hinge type wire clamps (the number of which is consistent with that of jumper wires) to grip wires to obtain current, and the current is led to the contact fingers through the bottom plate of the protective cover of the electricity taking device. The upper closing type electricity taking device also considers the correct closing design when the space position deviation of the contact finger and the contact is generated due to factors such as unbalanced tension of ice coating of the lead, wind deflection and the like, and the contact finger protection design that the closing effect and the overcurrent effect are not influenced by the rainwater freezing environment.
The function of the opening and closing electric conductor is: and when ice melting, the connection with the upper-combined electricity taking device and the ground wire is completed, so that the ground wire is ensured to acquire current from the wire bundle. After the ice melting is finished, the upper-closing type ground wire ice melting automatic wiring device is in an opening and closing state, the opening and closing electric conductor vertically faces downwards along the tower body, and the contact is placed in the falling type protective cover for protection.
In addition, the automatic wiring device for upper closing type ground wire ice melting also designs a manual closing plan. When the control box fails, a worker can climb the tower to the transmission mechanism, open the motor protection cover, take out the crank and manually close and open the brake. The scheme provides one-step guarantee for successful switching-on and switching-off of the device.
After the switch is opened in place, the falling type protective cover protects the contact at the end part of the open-close conductive device from rain and snow, is arranged on a platform at the outer side of the tower body and is arranged below the transmission mechanism.
The electric control system is responsible for switching on and switching off the device. The power line and the signal line are led from the transmission mechanism and the falling protective cover to the lower part of the tower along the iron tower and are fixed by special clamps. When not used at ordinary times, the power line and the signal line are folded and put into the lockwire cabinet of the first cross arm of the iron tower, which is close to the ground, for protection.
The invention discloses an upper-closing type ground wire ice melting automatic wiring device, which is designed for improving an iron tower or a wiring device aiming at the structural characteristics of a short arm cross arm. When the ground wire needs to be iced, a worker realizes the butt joint of the ground wire and the lead, namely, the current on the lead bundle is acquired and is conducted to the ground wire.
When the ground wire ice melting is needed, a worker takes down the power wire and the signal wire joint from the wire locking cabinet at the first cross arm of the iron tower to the lower part of the tower and is connected with the power supply to the control box of the electric control system, the control box can be operated at the bottom of the tower to switch on the device, and the transmission mechanism drives the opening and closing electric conductor to rotate upwards to open the upward-closing electric extractor, so that connection between the ground wire and the guide wire is realized. At this time, the ice melting is performed by energizing.
After ice melting is finished, the control box is operated at the bottom of the tower to open the device, the transmission mechanism drives the opening and closing electric conductor to rotate downwards, the contact of the opening and closing electric conductor enters the falling type protective cover, the action is stopped after the opening and closing is in place, and meanwhile, the rain and snow protection can be carried out, and the ground is connected.
Because the automatic wiring device for the upper-closing type ground wire ice melting is specially designed for the installed iron tower, the installation of each component has specificity during the installation. During installation, the transmission mechanism is installed on a platform which is built on the side surface of the tower body in advance through a special fixture for the transmission mechanism. The open-close electric conductor is hung to the transmission mechanism, is connected with an output end flange plate of the transmission mechanism through bolts, and a speed reducer protective cover is arranged on the periphery of the speed reducer. After the heavy hammer sheets on two sides of the jumper suspension clamp are removed, the upper combined type electricity taking device is installed on the jumper suspension clamp, and a plurality of hinge type clamps are used for gripping split conductors, so that ice melting current on the conductor bundles can be effectively obtained.
When the falling protective cover is installed, the falling protective cover is installed on the side surface of the tower body and a platform below the transmission mechanism through a special bracket and a clamp. The power line and the signal line are arranged from the device to the lower part of the tower through the special line clamping device, the connector is connected and protected, and then the device is debugged. During debugging, the position of the transmission mechanism is finely adjusted according to the in-place closing condition, so that the contact and the contact finger are ensured to be correctly closed during closing, and meanwhile, the displacement deviation of the contact and the contact finger is ensured to be still effectively matched within the design range. According to the protection condition of the opening and closing electric conductor contact in the falling type protective cover when the opening and closing electric conductor contact is in place, the position of the falling type protective cover is finely adjusted, effective rain and snow freezing protection of the opening and closing electric conductor contact is guaranteed, and the effectiveness of protection measures in the design displacement deviation range is guaranteed.
After each part is debugged, each part is fixed and positioned by a specified clamp according to the design requirement.
When the ground wire needs to melt ice, a worker carries the control box and the power supply to the lower part of the tower, takes down the power supply wire from the wire locking cabinet at the first cross arm of the iron tower, connects the signal wire to the lower part of the tower, and is connected to the control box of the electric control system together with the power supply. And selecting an operation mode according to the field working condition, then pressing a closing button, and driving the opening and closing electric conductor to rotate out of the falling type protective cover by the transmission structure to open and close the upper electric extractor. After the contact of the opening and closing electric conductor is in place in butt joint with the contact finger of the upper closing type electricity taking device, the electric motor is closed in place, and the action of the electric motor is stopped. At this time, the ice melting can be performed by electrifying.
After ice melting is finished, a worker presses a key of opening the switch, the transmission structure drives the opening and closing electric conductor to rotate downwards to separate from the upper-closing electric extractor, when the upper-closing electric extractor reaches the falling type protective cover, the revolving door is pushed to rotate to close the door, the proximity switch works after the door is in place, and the motor stops acting. At this time, the contact of the open-close electric conductor is completely covered in the falling type protective cover, so that rain and snow invasion is avoided.
Claims (6)
1. The utility model provides an on close formula ground wire ice-melt automatic wiring device which characterized in that: the electric control system comprises an upper-closing type electricity taking device, a transmission mechanism, an opening and closing type electricity taking device, a falling type protection cover and an electric control system, wherein the transmission mechanism is arranged on a platform on the side face of a tower body; the upper-combination type electricity taking device comprises a contact finger assembly, a guide plate, a protective cover, a wire clamp assembly, a corner joint and a connecting assembly; the connecting components are arranged at two sides of the jumper suspension clamp to realize connection with the insulator jumper string, and the weight pieces are symmetrically arranged at two sides of the connecting components; the corner connector is arranged at the lower end of the connecting component, the lower end of the corner connector is connected with the bottom plate of the protective cover through channel steel, the wire clamp component is further arranged on the bottom plate of the protective cover, the protective cover comprises the bottom plate of the protective cover, and the contact finger component and the guide plate are arranged inside the protective cover; the contact finger assembly comprises a plurality of copper blocks which are arranged side by side at intervals, at least two contact fingers are symmetrically arranged on each copper block, threaded holes are formed in the positions, located between the two contact fingers, of the copper blocks for installing the copper blocks, waist-shaped clamping grooves are formed in each contact finger, tension springs are arranged in the clamping grooves through pin shafts, and the tension springs are connected between the two opposite contact fingers; the guide plate is splayed and is arranged on the outer side of the contact finger assembly; the opening of the protective cover faces downwards, the protective cover is arranged at the periphery of the guide plate and the contact finger assembly, the lower end of the guide plate is connected with the protective cover through a set screw, the bottom plate of the protective cover is fixedly connected with the channel steel on the outer side and the copper block on the inner side through a fastener, meanwhile, the outer side of the bottom plate of the protective cover is fixedly connected with a drainage wire clamp of the wire clamp assembly to obtain current, and the current is transmitted to the contact finger through the fixedly connected copper block; the lower end of the corner joint is connected with channel steel on the bottom plate of the protective cover, and the upper end of the corner joint is connected with the connecting component, so that the angle deflection between the contact finger and the jumper wire is realized; the wire clamp assembly comprises a hinge wire clamp and a drainage wire clamp, the drainage wire clamp is connected to the outer side of the bottom plate of the protective cover, and the other end of the drainage wire clamp is connected with the hinge wire clamps through a plurality of wires respectively.
2. The on-line ground wire ice-melting automatic wiring device of claim 1, wherein: the falling protective cover comprises a protective umbrella and a protective box, wherein the protective umbrella comprises an umbrella-shaped wrapping hoop and a sealing ring, the sealing ring is arranged above the umbrella-shaped wrapping hoop, the umbrella-shaped wrapping hoop is connected to a conducting rod of the open-close conducting device, the sealing ring is sleeved on the conducting rod and is tightly attached to the conducting rod, and the sealing ring is arranged above the umbrella-shaped wrapping hoop; the protection box comprises a box body, a revolving door, a baffle rod, a proximity switch assembly and a torsion spring, wherein an opening is formed in one side of the box body, the opening of the box body is splayed, the revolving door is arranged on one side of the opening of the box body, an umbrella-shaped wrapping hoop is higher than the revolving door and is positioned above the opening of the box body, a rotating shaft of the revolving door is rotatably arranged on one side of the box body, the torsion spring is arranged on the rotating shaft, one end of the torsion spring is fixed on the box body, the other end of the torsion spring is fixed on the rotating shaft, one end of the baffle rod is arranged on the rotating shaft and is positioned above the torsion spring, a stop block is further arranged on the outer side of a connecting end of the baffle rod, the upper end and the lower end of the rotating shaft are all extended out of the box body and are fixedly connected with the revolving door, a baffle plate is arranged on the box body, a lower rotating shaft is further connected to the lower end of the rotating shaft, one end of the lower support rod is fixedly connected with the bottom of the revolving door, and the other end of the lower support rod is connected with the lower rotating shaft.
3. The on-line ground wire ice-melting automatic wiring device according to claim 1 or 2, characterized in that: a plurality of universal wheels are also arranged between the revolving door and the box body, and a grounding wire is connected between the baffle rod and the box body.
4. The on-line ground wire ice-melting automatic wiring device of claim 3, wherein: the electric control system comprises a control box, a direct-current power supply, a power line, a signal line and a locking line cabinet, wherein the control box is respectively connected with the direct-current power supply, the power line and the signal line, the locking line cabinet is fixed on the tower body, the power line and the signal line are placed in the locking line cabinet for storage after being used, and the other ends of the power line and the signal line are connected to a transmission mechanism.
5. The on-line ground wire ice-melting automatic wiring device according to claim 4, wherein: the transmission mechanism comprises a turbine vortex rod speed reducer with a self-locking function, and a speed reducer protective cover is arranged on the outer side of the turbine vortex rod speed reducer of the transmission mechanism.
6. The on-line ground wire ice-melting automatic wiring device according to claim 5, wherein: one end of the opening and closing electric conductor, which is connected with the transmission mechanism, is also connected to the tower body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710094962.1A CN107508237B (en) | 2017-02-22 | 2017-02-22 | Automatic wiring device for upper-closing type ground wire ice melting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710094962.1A CN107508237B (en) | 2017-02-22 | 2017-02-22 | Automatic wiring device for upper-closing type ground wire ice melting |
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| CN107508237B true CN107508237B (en) | 2023-06-27 |
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| CN201710094962.1A Active CN107508237B (en) | 2017-02-22 | 2017-02-22 | Automatic wiring device for upper-closing type ground wire ice melting |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110021904A (en) * | 2019-05-15 | 2019-07-16 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Automatic phase selecting disconnecting link |
| CN110071471A (en) * | 2019-06-03 | 2019-07-30 | 中国能源建设集团南京线路器材有限公司 | Split type folding conductor |
| CN112103889B (en) * | 2020-09-17 | 2022-02-25 | 中国能源建设集团南京线路器材有限公司 | Insulation protection equipment for automatic wiring device for ground wire ice melting |
| CN112134243B (en) * | 2020-09-29 | 2022-03-01 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Grounding protection lock |
| CN112087059B (en) * | 2020-09-29 | 2021-06-15 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Online detection device and detection method for closing state of automatic ground wire ice melting wiring device |
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| WO2015043460A1 (en) * | 2013-09-24 | 2015-04-02 | 国家电网公司 | High-speed grounding switch and grounding switch assembly unit composed thereof |
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| CN105322493A (en) * | 2014-06-16 | 2016-02-10 | 中国南方电网有限责任公司超高压输电公司 | Ground wire ice melting automatic wiring device |
| CN206524604U (en) * | 2017-02-22 | 2017-09-26 | 中国能源建设集团南京线路器材有限公司 | Upper box-like ground wire deicing automatic connection device |
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| WO2015043460A1 (en) * | 2013-09-24 | 2015-04-02 | 国家电网公司 | High-speed grounding switch and grounding switch assembly unit composed thereof |
| CN105226596A (en) * | 2014-06-16 | 2016-01-06 | 南京电力金具设计研究院有限公司 | A kind of electricity getting device for ground wire deicing automatic connection device |
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