CN119132870A - An outdoor high voltage inverted AC isolating switch - Google Patents
An outdoor high voltage inverted AC isolating switch Download PDFInfo
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- CN119132870A CN119132870A CN202411627314.4A CN202411627314A CN119132870A CN 119132870 A CN119132870 A CN 119132870A CN 202411627314 A CN202411627314 A CN 202411627314A CN 119132870 A CN119132870 A CN 119132870A
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- pull rod
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- 239000012212 insulator Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000001360 synchronised effect Effects 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 9
- 230000016507 interphase Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/64—Protective enclosures, baffle plates, or screens for contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
本发明涉及一种户外高压倒装式交流隔离开关，包括隔离开关单元，所述隔离开关单元包括三个隔离开关主体，隔离开关主体包括底座、绝缘子柱、极间拉杆、接线座、触头侧导电臂、触指侧导电臂、触头、触指，所述触头侧导电臂与触指侧导电臂在极间拉杆的拉动下进行摆动，实现触头、触指的分合闸；相邻的两个隔离开关主体之间通过相间拉杆相联实现同步动作，在位于外侧的一个隔离开关主体上还连接有一水平向外设置的主刀拉杆；驱动隔离开关单元进行动作的操动单元。本发明的隔离开关，采用倒装设计的隔离开关来与变电站进行配合，能够利用输电铁塔横梁的下部空间来进行隔离开关的安装，同时又能确保隔离开关的正常工作，大大降低了隔离开关安装后的高度。
The present invention relates to an outdoor high-voltage inverted AC disconnector, comprising an isolating switch unit, wherein the isolating switch unit comprises three isolating switch bodies, the isolating switch body comprises a base, an insulator column, an inter-pole pull rod, a terminal seat, a contact side conductive arm, a contact finger side conductive arm, a contact, and a contact finger, wherein the contact side conductive arm and the contact finger side conductive arm swing under the pull of the inter-pole pull rod to realize the opening and closing of the contact and the contact finger; two adjacent isolating switch bodies are connected by an inter-phase pull rod to realize synchronous action, and a main knife pull rod arranged horizontally outward is also connected to an isolating switch body located on the outside; and an operating unit drives the isolating switch unit to act. The isolating switch of the present invention adopts an inverted isolating switch to cooperate with a substation, and can use the lower space of the transmission tower beam to install the isolating switch, while ensuring the normal operation of the isolating switch, which greatly reduces the height of the isolating switch after installation.
Description
Technical Field
The invention relates to the field of isolating switches, in particular to an outdoor high-voltage inverted alternating-current isolating switch.
Background
The GW4-420D (W) outdoor high-voltage alternating current isolating switch is an outdoor high-voltage transmission device with the rated frequency of three-phase alternating current of 50/60Hz and the rated voltage of 400kV, and is used for switching off or switching on a high-voltage line under the condition of no load so as to convert the high-voltage line, change the operation mode and safely electrically isolate overhauled buses from high-voltage electrical equipment such as a circuit breaker and the like.
At present, with the development of urban construction, urban land and farmland land are increasingly tense, the occupied land of a transformer substation is saved, site planning and total plane arrangement are more flexible, and site selection is realized under the conditions of narrow site, crowded outgoing line corridor and the like, so that the method has very remarkable effect. Therefore, how to reduce the occupied area of the transformer substation, fully utilize limited land resources, and reasonably arrange an electric total plane becomes one of important subjects of electric power department research.
When the existing transformer substation is designed, a plurality of factors such as arrangement in the transformer substation, convenient wiring and occupied space saving are considered, lines in the transformer substation are distributed into an upper layer and a lower layer, the connection between the upper layer and the lower layer of lines is realized through an outdoor high-voltage alternating-current isolating switch, in the process, the outdoor high-voltage alternating-current isolating switch is more troublesome to install, and because the outdoor high-voltage alternating-current isolating switch is suitable for connecting the upper layer and the lower layer of lines, a certain safety distance is reserved between the outdoor high-voltage alternating-current isolating switch and the lower layer of isolating switch and the upper layer of lines, the outdoor high-voltage alternating-current isolating switch has certain requirements, if the power transmission tower in the original transformer substation is utilized for installation, the occupied area of the whole transformer substation is increased, and the isolating switch and the grounding rod of the power transmission tower are required to keep a certain insulation safety distance, so that the height of the power transmission tower is required to be high, and more trouble is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing an outdoor high-voltage inverted alternating-current isolating switch which is convenient to install, reduces the occupied area of a transformer substation and can reduce the installation height.
In order to solve the technical problems, the technical scheme of the invention is that the outdoor high-voltage inverted alternating-current isolating switch is characterized in that the outdoor high-voltage inverted alternating-current isolating switch is inverted on a beam of a power transmission tower and comprises
The isolating switch unit comprises three isolating switch bodies which are distributed in parallel, wherein the isolating switch bodies comprise a base, two sides of the bottom end surface of the base are respectively connected with an insulator column, one side, close to the base, of each insulator column is connected with each other through an interelectrode pull rod, the bottom end of each insulator column is connected with a wire holder, one wire holder is connected with a contact side conductive arm, the other wire holder is connected with a contact finger side conductive arm, the end part of each contact side conductive arm is provided with a contact, the end part of each contact finger side conductive arm is provided with a contact finger, and the contact side conductive arm and the contact finger side conductive arm swing under the pulling of the interelectrode pull rod so as to realize the switching on and off of the contact and the contact finger;
the two adjacent isolating switch main bodies are connected through an inter-phase pull rod to realize synchronous action, and a main knife pull rod which is arranged horizontally outwards is also connected to one isolating switch main body positioned at the outer side;
The operating unit drives the isolating switch unit to act, the operating unit comprises an operating mechanism, the upper end of the operating mechanism box is connected with the main knife pull rod through a vertically arranged connecting rod assembly, and the main knife pull rod is driven to act, so that switching on and off of the three isolating switch main bodies are realized.
The two insulator columns are respectively arranged on the base through the matching of a bearing seat, the bearing seat is movably connected with the base through the matching of a bearing, the two bearing seats are respectively defined as a driving side bearing seat and a driven side bearing seat, and two sides of the interelectrode pull rod are respectively hinged with the driving side bearing seat and the driven side bearing seat;
The synchronous coordination between the two adjacent isolating switch bodies is that phase-to-phase pull rod joints are further arranged on the active side bearing seats of the isolating switch bodies, and two sides of the phase-to-phase pull rod are respectively hinged with the phase-to-phase pull rod joints on the active side bearing seats of the two adjacent isolating switch bodies, so that synchronous actions of the two adjacent isolating switch bodies are realized;
The main knife pull rod is hinged with the main pull rod joint, and the main knife pull rod is pulled to rotate, so that all the contacts of the main disconnecting switch body and the contact fingers are switched on and off.
Furthermore, the bearing seat is matched with the base, wherein a flange shaft is arranged on the base, two sides of the flange shaft extend out of two sides of the base respectively, one side of the flange shaft is connected with the bearing seat, and the other side of the flange shaft is connected with the auxiliary rotating assembly;
The flange shaft consists of a flange inner shaft and a flange outer shaft which are coaxially arranged inside and outside, and defines that one side of the flange shaft connected with the bearing seat is a first side, and one side connected with the auxiliary rotating assembly is a second side;
The flange shaft is connected with the bearing seat, a through hole for allowing the flange shaft to pass through is formed in the middle of the bearing seat, the bearing seat is directly sleeved on the outer side of the flange shaft, a first deep groove ball bearing is further arranged between the bearing seat and the flange shaft, the inner wall of the bearing seat is in a ladder shape, a first ladder section, a second ladder section and a third ladder section are sequentially arranged, the diameters of the first ladder section and the third ladder section are larger than the diameter of the second ladder section, the outer wall of the outer shaft of the flange is provided with a fourth ladder section which is attached to the inner wall of the first ladder section, a fifth ladder section which is attached to the inner wall of the second ladder section, the outer wall of the inner shaft of the flange is provided with a sixth ladder section which is matched with the inner wall of the third ladder section to form a cavity for accommodating the first deep groove ball bearing, a first backing plate in a ring shape is further arranged on one side of the bearing seat, and the first backing plate is fixed on the base through the matching of bolts;
the auxiliary rotating assembly comprises a second deep groove ball bearing, a thrust bearing, a shaft cover, a shaft sleeve, a bearing seat sealing plate, a bearing seat sealing cover and a base mounting plate, wherein a cavity for accommodating the second deep groove ball bearing and the thrust bearing is formed in the position of a second side of the flange inner shaft and the flange outer shaft, the outer wall of the flange inner shaft at the position of the second side is in a step shape, a seventh step section and an eighth step section are sequentially arranged, the seventh step section is positioned at one side close to the sixth step section, the diameter of the seventh step section is larger than that of the eighth step section, the inner wall of the flange outer shaft at the position of the second side is also in a step shape, a ninth step section and a tenth step section are sequentially arranged, the ninth step section is matched with the seventh step section to form a cavity for accommodating the second deep groove ball bearing, and the tenth step section is matched with the eighth step section to form a cavity for manner thrust bearing mounting;
The flange inner shaft is located at one side end of the second side and fixedly connected with the shaft cover through the cooperation of the bolts, one side end of the flange outer shaft is located at one side of the second side and fixedly connected with the bearing seat sealing cover through the cooperation of the bolts, the outer side of the flange outer shaft is further sleeved with a shaft sleeve, the shaft sleeve is fixedly connected with the flange outer shaft through the cooperation of the bolts, one side, close to the base, of the shaft sleeve is further provided with a ring-shaped second base plate, the second base plate is fixedly arranged on the base through the cooperation of the bolts, the outer side of the shaft sleeve is further provided with a base mounting plate for covering the shaft sleeve, and a bearing seat sealing plate is fixedly arranged at the end portion of the base mounting plate.
Further, the connecting rod assembly comprises a vertical connecting rod which is vertically arranged, a plurality of vertical connecting rod supports and vertical connecting rod connecting clamping pieces are arranged on the vertical connecting rod, and the top end of the vertical connecting rod is connected with the main knife pull rod through a main crank arm bearing seat.
Further, the main crank arm bearing seat comprises a main crank arm bearing seat main body, a main crank arm shaft, a crank arm connecting shaft, a main pull rod joint and an opening and closing limiting assembly;
The connecting shaft of the crank arm is vertically arranged on the main crank arm bearing seat main body, the upper side and the lower side of the connecting shaft of the crank arm extend out from the upper side and the lower side of the main crank arm bearing seat main body respectively, a bearing seat sleeve is further arranged between the connecting shaft of the crank arm and the main crank arm bearing seat main body, the lower side of the connecting shaft of the crank arm is fixed with a vertical connecting rod through the matching of a connecting pin, the upper side of the connecting shaft of the crank arm is connected with a main crank arm shaft which is horizontally arranged and drives the main crank arm shaft to swing, a main pull rod connector is hinged on the main crank arm shaft, and the main pull rod connector is connected with a main cutter pull rod;
The opening and closing limiting assembly comprises an opening and closing support, and opening and closing limiting bolts which are arranged on two sides of the opening and closing support, wherein the opening and closing support is fixed on the main crank arm bearing seat main body and is arranged beside the main crank arm shaft, and the opening and closing limiting bolts and the closing limiting bolts are arranged on one side, adjacent to the main crank arm shaft, of the opening and closing support.
Further, the upper side of the wire holder is also provided with an equalizing ring, and the equalizing ring surrounds the outer side of the insulator column.
Further, shielding covers are further arranged on one side of the contact finger, which is located on the contact finger, and the shielding covers are four in number, namely an upper shielding cover, a lower shielding cover and side shielding covers, wherein the upper shielding cover and the lower shielding cover are located on the upper side and the lower side of the contact finger, the side shielding covers are located on the left side and the right side of the contact finger, and in a closing state, the contact finger and the contact are covered by the shielding covers.
The invention has the advantages that the isolating switch is matched with the transformer substation by adopting the isolating switch in a flip-chip design, the original power transmission tower in the transformer substation can be utilized for installation, the lower space of the power transmission tower beam is utilized for installation of the isolating switch, and meanwhile, the normal operation of the isolating switch can be ensured, so that the height of the isolating switch after installation is greatly reduced.
To the cooperation between bearing frame and the base, adopt the design of a plurality of different ladder sections and the mutual cooperation of first deep groove ball bearing, second deep groove ball bearing and thrust bearing to make the bearing frame rotate more smoothly, avoid appearing the bad phenomenon such as card death, just also provide excellent basis for the smooth divide-shut brake of follow-up contact, touch finger, avoid appearing the divide-shut brake card and stop or divide-shut brake phenomenon not in place.
The design of the main crank arm bearing seat adopts the matching of the main crank arm shaft, the crank arm connecting shaft and other parts, and well converts the vertical rotation of the vertical connecting rod into horizontal movement, thereby providing a good switching foundation for the driving matching between the vertical connecting rod and the main knife pull rod, and the design of the opening and closing limiting assembly achieves the purpose of hard limiting the opening and closing action of the main knife pull rod through the matching of the opening and closing limiting bolt and the closing limiting bolt, and avoids the phenomenon that the opening and closing are excessively limited when a contact point is touched.
For the design of the shielding cover, the shielding cover which covers the contact fingers and the contacts is designed in the upper, lower, left and right directions of the contact fingers, so that interference of external electric signals to the contact fingers of the contacts can be shielded after closing, and the contacts and the contact fingers are better protected.
Drawings
Fig. 1 is a schematic diagram of an outdoor high voltage inverted ac disconnector according to the invention.
Fig. 2 is a front view of the outdoor high voltage inverted ac disconnector of the present invention.
Fig. 3 is a schematic view of the isolating switch body in the present invention.
Fig. 4 is a schematic view of the cooperation between the bearing housing and the base in the present invention.
Fig. 5 is another angular schematic view of the fit between the bearing housing and the base in the present invention.
Fig. 6 is a cross-sectional view of the fit between the bearing housing and the base in the present invention.
Fig. 7 is an enlarged schematic view of a portion a of fig. 6.
FIG. 8 is a schematic view of a main crank arm bearing housing according to the present invention.
Fig. 9 is a front view of the main crank arm bearing housing of the present invention.
Fig. 10 is a top view of the main crank arm bearing housing of the present invention.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
An outdoor high-voltage inverted ac disconnecting switch as shown in fig. 1-10, which is inverted on a beam of a power transmission tower, comprising
The isolating switch unit 1, the isolating switch unit 1 includes three isolating switch main bodies distributed in parallel, as shown in the schematic diagram of fig. 4, the isolating switch main bodies include a base 11, two sides of a bottom end surface of the base 11 are respectively connected with an insulator column 12, and umbrella skirt structures of the insulator columns 12 all adopt conical structures with small upper parts and large lower parts, so that rainwater can smoothly flow, accumulation is avoided, one sides of the two insulator columns 12 close to the base 11 are connected through an interelectrode pull rod 13, a wire holder 14 is connected at the bottom end of the insulator column 12, a wire connection plate 15 is further connected at the bottom end of the wire holder 14, an equalizing ring 121 is further arranged at the upper side of the wire holder 14, and the equalizing ring 121 surrounds the outer side of the insulator column 12. The grading ring 121 is designed to improve the voltage distribution of the insulator posts 12.
One of the wire holders 14 is connected with a contact-side conductive arm 16, the other wire holder 14 is connected with a contact-finger-side conductive arm 17, a contact is mounted at the end of the contact-finger-side conductive arm 16, a contact finger is mounted at the end of the contact-finger-side conductive arm 17, and the contact-finger-side conductive arm 16 and the contact-finger-side conductive arm 17 swing under the pulling of the interelectrode pull rod 13 to realize the opening and closing of the contact and the contact finger.
The two adjacent isolating switch bodies are connected through the inter-phase pull rod 18 to realize synchronous action, and a main knife pull rod 19 which is arranged horizontally outwards is also connected to one isolating switch body positioned at the outer side.
The inter-electrode pull rod 13 is matched with the contact side conductive arm 16 and the contact finger side conductive arm 17, namely, two insulator columns 12 are respectively arranged on the base 11 through the matching of a bearing seat 101, the bearing seat 101 is movably connected with the base 11 through the matching of bearings, the top ends of the insulator columns 12 are fixedly connected with the bearing seat 101 through the matching of bolts and nuts, and rotate along with the bearing seat 101, so that the contact side conductive arm 16 and the contact finger side conductive arm 17 swing, the two bearing seats 101 are respectively defined as an active side bearing seat and a passive side bearing seat, and two sides of the inter-electrode pull rod 13 are respectively hinged with the active side bearing seat and the passive side bearing seat.
As shown in the schematic diagram of fig. 7, the bearing seat 101 is matched with the base 11, a flange shaft is installed on the base 11, two sides of the flange shaft extend out of two sides of the base 1 respectively, one side of the flange shaft is connected with the bearing seat 101, the other side of the flange shaft is connected with the auxiliary rotating assembly, and a rain cover is arranged between the bearing seat 101 and the base 11.
The flange shaft is composed of a flange inner shaft 102 and a flange outer shaft 103 which are coaxially arranged inside and outside, a through hole for inserting and moving the flange inner shaft 102 is formed in the middle of the flange outer shaft 103, one side, connected with the bearing seat 101, of the flange shaft is defined as a first side, and one side, connected with the auxiliary rotating assembly, of the flange shaft is defined as a second side.
The flange shaft is connected with the bearing seat 101, a through hole for allowing the flange shaft to pass through is formed in the middle of the bearing seat 101, the bearing seat 101 is directly sleeved on the outer side of the flange shaft, a first deep groove ball bearing 104 is further arranged between the bearing seat 101 and the flange shaft, the inner wall of the bearing seat 101 is in a step shape, the first step section, the second step section and the third step section are sequentially arranged, the diameter of the first step section and the diameter of the third step section are larger than that of the second step section, the first step section is positioned on one side close to the base 11, the outer wall of the flange outer shaft 103 on the first side is provided with a fourth step section which is jointed with the inner wall of the first step section, and a fifth step section which is jointed with the inner wall of the second step section, the outer wall of the flange inner shaft 102 on the first side is provided with a sixth step section which is matched with the inner wall of the third step section to form a cavity for accommodating the first deep groove ball bearing 104, a first backing plate 105 is further arranged on one side close to the base 11 of the bearing seat 101, the first backing plate 105 is further arranged on one side close to the base 11 through the bearing seat 101, the backing plate 105 is further arranged on one side close to the base 11 through the matching of the nuts, and the backing plate 105 is positioned on one side close to the first backing plate 105 through the base 101.
The auxiliary rotating assembly comprises a second deep groove ball bearing 106, a thrust bearing 107, a shaft cover 108, a shaft sleeve 109, a bearing seat sealing plate 110, a bearing seat sealing cover 111 and a base mounting plate 112, wherein a cavity for accommodating the second deep groove ball bearing 106 and the thrust bearing 107 is formed at the second side of the flange inner shaft 102 and the flange outer shaft 103, the outer wall of the flange inner shaft 102 at the second side is in a stepped shape and sequentially comprises a seventh step section and an eighth step section, the seventh step section is positioned at one side close to the sixth step section, the diameter of the seventh step section is larger than that of the eighth step section, the inner wall of the flange outer shaft 103 at the second side is also in a stepped shape and sequentially comprises a ninth step section and a tenth step section, the ninth step section is matched with the seventh step section to form a cavity for accommodating the second deep groove ball bearing 106, and the tenth step section is matched with the eighth step section to form a cavity for manner for accommodating the thrust bearing 107.
The end of one side of the flange inner shaft 102 at the second side is fixedly connected with the shaft cover 108 through the fit of bolts, the end of the shaft cover 108 is attached to the end of the thrust bearing 107, limiting fixation of the thrust bearing 107 is achieved, the end of one side of the flange outer shaft 103 at the second side is fixed with the bearing seat sealing cover 101 through the fit of bolts, sealing of the end of the flange outer shaft 103 at the second side is achieved through the bearing seat sealing cover 101, the shaft sleeve 109 is sleeved outside the flange outer shaft 103, the shaft sleeve 109 is fixed with the flange outer shaft 103 through the fit of bolts, the shaft sleeve 109 covers the flange inner shaft 102 at the second side and the flange outer shaft 103, an annular second base plate 113 is further arranged on one side, close to the base, of the shaft sleeve 109, and the second base plate 113 is sleeved on the outer wall of the shaft sleeve 109, the second base plate 113 is fixed on the base 11 through the fit of bolts and nuts, and the second base plate 113 and the first base plate 105 are fixed with the same set of bolts and nuts.
A base mounting plate 112 covering the shaft sleeve 109 is further arranged on the outer side of the shaft sleeve 109, a through hole for avoiding the shaft sleeve 109 is further formed in the middle of the base mounting plate 112 and located at the position of the shaft sleeve 109, and a bearing seat sealing plate 111 for sealing the through hole of the base mounting plate 112 is further fixed at the end part of the base mounting plate 112.
For the cooperation between bearing frame 101 and base 11, through the design of the different ladder sections of bearing frame 101, flange inner shaft 102 and flange outer shaft 103, and the mutual cooperation of first deep groove ball bearing 104, second deep groove ball bearing 106 and thrust bearing 107, can ensure that the position after bearing frame 101 installs plays a spacing effect, avoid bearing frame 101 to take place relative drunkenness for base 11, can make bearing frame 101 can more smooth and easy rotate again, avoid appearing the dead adverse phenomena of card, just so provide excellent basis for the smooth divide-shut brake of follow-up contact, contact finger, avoid appearing dividing-shut brake card and put or divide-shut brake phenomenon in place.
The synchronous coordination between the two adjacent isolating switch bodies is that phase-to-phase pull rod joints are further arranged on the active side bearing seats of the isolating switch bodies, and two sides of the phase-to-phase pull rod 18 are respectively hinged with the phase-to-phase pull rod joints on the active side bearing seats of the two adjacent isolating switch bodies, so that synchronous action of the two adjacent isolating switch bodies is realized.
A main pull rod joint is further arranged on a driving side bearing seat of the isolating switch main body connected with the main pull rod 19, the main pull rod 19 is hinged with the main pull rod joint, and the driving side bearing seat is pulled to rotate, so that the switching-on and switching-off of all contacts and contact fingers of the isolating switch main body are realized.
The contact finger side conductive arm 17 is further provided with four shielding cases 171 on one side of the contact finger, the shielding cases 171 are respectively an upper shielding case, a lower shielding case and side shielding cases on the left side and the right side of the contact finger, and in a closing state, the shielding cases 171 are mutually matched to cover the contact finger and the contact. For the design of the shielding cover 171, the shielding covers which cover the contact fingers and the contacts are designed in the upper, lower, left and right directions of the contact fingers, so that interference of external electric signals to the contact fingers of the contacts can be shielded after closing, and the contacts and the contact fingers can be better protected.
The operating unit 2 drives the isolating switch unit to act, the operating unit 2 comprises an operating mechanism 21, the upper end of the operating mechanism box 21 is connected with the main knife pull rod 19 through a vertically arranged connecting rod assembly, the main knife pull rod 19 is driven to act, switching on and off of three isolating switch bodies are achieved, and the vertical connecting rod 22 is driven by the operating mechanism box 21 to rotate.
The connecting rod assembly comprises a vertical connecting rod 22 which is vertically arranged, a plurality of vertical connecting rod brackets and vertical connecting rod connecting clamping pieces are arranged on the vertical connecting rod 22, the vertical connecting rod brackets and the vertical connecting rod connecting clamping pieces are sequentially distributed on the outer wall of the vertical connecting rod 22 from top to bottom, and the top end of the vertical connecting rod is connected with the main cutter pull rod 19 through a main crank arm bearing seat 23. Through the cooperation between perpendicular connecting rod support and the perpendicular connecting rod connection folder, because the length of perpendicular connecting rod 22 is longer, therefore add perpendicular connecting rod support and perpendicular connecting rod connection folder and play a stable effect to perpendicular connecting rod 22, avoid perpendicular connecting rod 22 to appear and rock the adverse phenomenon such as, and influence the stability of follow-up transmission.
As can be seen from the schematic diagrams shown in fig. 8 to 10, the main crank arm bearing 23 includes a main crank arm bearing body 231, a main crank arm shaft 235, a crank arm connecting shaft 232, a main draw bar joint 236, and an opening/closing limiting assembly.
The main crank bearing seat body 231 is a 匚 -shaped structural plate formed by commonly connecting a pair of horizontal plates and a vertical plate.
The crank arm connecting shaft 232 is vertically arranged on the main crank arm bearing seat body 231, the upper side and the lower side of the crank arm connecting shaft 232 respectively extend out from the upper side and the lower side of two horizontal plates of the main crank arm bearing seat body 231, a bearing seat sleeve 233 is further arranged between the crank arm connecting shaft 232 and the main crank arm bearing seat body 231, and a bearing is further arranged in the bearing seat sleeve 233, so that free rotation between the crank arm connecting shaft 232 and the main crank arm bearing seat body 231 is realized.
The lower side of the crank arm connecting shaft 232 is fixed with the vertical connecting rod 22 through the matching of the connecting pin 234, the upper side of the vertical connecting rod 22 is provided with a groove for accommodating the insertion and installation of the crank arm connecting shaft 232, after the lower side of the crank arm connecting shaft 232 is inserted into the groove of the vertical connecting rod 22, the lower side sequentially passes through the vertical connecting rod 22 and the crank arm connecting shaft 232 through the pin shaft 234, and then the relative fixation between the vertical connecting rod 22 and the crank arm connecting shaft 232 is realized, so that the crank arm connecting shaft 232 can be driven to synchronously rotate when the vertical connecting rod 22 rotates.
The main crank arm shaft 235 is arranged above the main crank arm bearing seat body 231, the upper side of the crank arm connecting shaft 232 is connected with the main crank arm shaft 235 which is horizontally arranged and drives the main crank arm shaft 235 to swing, the main crank arm shaft 235 is also hinged with a main pull rod connector 236, and the main pull rod connector 236 is connected with the main cutter pull rod 19.
The opening and closing limiting assembly comprises an opening and closing support 237, and opening and closing limiting bolts 238 and 239 installed on two sides of the opening and closing support 237, wherein the opening and closing support 237 is fixed on the upper end face of the main crank arm bearing main body 231 through the matching of bolts and nuts, the opening and closing support 237 is arranged beside the main crank arm shaft 235, and the opening and closing limiting bolts 238 and 239 are arranged on one side of the opening and closing support 237 adjacent to the main crank arm shaft 235.
The design of the main crank arm bearing seat 23 adopts the matching of the main crank arm shaft 235, the crank arm connecting shaft 232 and other parts, well converts the vertical rotation of the vertical connecting rod 22 into horizontal movement, thereby providing a good switching foundation for the driving matching between the vertical connecting rod 22 and the main knife pull rod 19, and the design of the opening and closing limiting assembly achieves the purpose of hard limiting the swing of the main crank arm shaft 235 through the matching of the opening and closing limiting bolt 238 and the closing limiting bolt 239, thereby achieving the purpose of hard limiting the opening and closing action of the main knife pull rod 19 and avoiding the phenomenon that the opening and closing are excessively limited when the contact points are pointed.
When the switching-on/off operation is performed, the operating mechanism box 21 works to drive the vertical connecting rod 22 to rotate, the rotation of the vertical connecting rod 22 pulls the main knife pull rod 19 to horizontally move through the cooperation of the main knife pull rod 23, the movement of the main knife pull rod 19 drives the driving side bearing seat of the nearest isolating switch main body to rotate, the rotation of the driving side bearing seat pulls the driven side bearing seat of the same isolating switch main body to synchronously rotate through the cooperation of the interelectrode pull rod 13, the rotation of the driving side bearing seat and the driven side bearing seat drives the two insulator posts 12 to synchronously rotate, and the corresponding contact finger side conducting arm 17 and the contact finger side conducting arm 16 synchronously swing, so that the switching-on/off of the contact finger of the isolating switch main body is realized, and in addition, the driving side bearing seat connected with the main knife pull rod 19 pulls the driving side bearing seat of the adjacent isolating switch main body to synchronously rotate through the cooperation of the inter-phase pull rod 18, and finally the synchronous switching-off of the contact fingers of the three isolating switch main bodies is realized.
According to the outdoor high-voltage inverted alternating current isolating switch, the inverted base 11, the insulator column 12 and other components are matched, the inverted base is matched with a transformer substation, the lower space of the original power transmission tower beam in the transformer substation can be utilized for installing the isolating switch, normal operation of the isolating switch can be ensured, and the installed height of the isolating switch is greatly reduced.
The present invention is not limited in any way by the above-described preferred embodiments, but is not limited to the above-described preferred embodiments, and any person skilled in the art will appreciate that the present invention can be embodied in the form of a program for carrying out the method of the present invention, while the above disclosure is directed to equivalent embodiments capable of being modified or altered in some ways, it is apparent that any modifications, equivalent variations and alterations made to the above embodiments according to the technical principles of the present invention fall within the scope of the present invention.
Claims (7)
1. An outdoor high-voltage inverted alternating-current isolating switch is characterized in that the outdoor high-voltage inverted alternating-current isolating switch is inverted on a beam of a power transmission tower, and comprises
The isolating switch unit comprises three isolating switch bodies which are distributed in parallel, wherein the isolating switch bodies comprise a base, two sides of the bottom end surface of the base are respectively connected with an insulator column, one side, close to the base, of each insulator column is connected with each other through an interelectrode pull rod, the bottom end of each insulator column is connected with a wire holder, one wire holder is connected with a contact side conductive arm, the other wire holder is connected with a contact finger side conductive arm, the end part of each contact side conductive arm is provided with a contact, the end part of each contact finger side conductive arm is provided with a contact finger, and the contact side conductive arm and the contact finger side conductive arm swing under the pulling of the interelectrode pull rod so as to realize the switching on and off of the contact and the contact finger;
the two adjacent isolating switch main bodies are connected through an inter-phase pull rod to realize synchronous action, and a main knife pull rod which is arranged horizontally outwards is also connected to one isolating switch main body positioned at the outer side;
The operating unit drives the isolating switch unit to act, the operating unit comprises an operating mechanism, the upper end of the operating mechanism box is connected with the main knife pull rod through a vertically arranged connecting rod assembly, and the main knife pull rod is driven to act, so that switching on and off of the three isolating switch main bodies are realized.
2. The outdoor high-voltage inverted AC isolating switch as set forth in claim 1, wherein the cooperation between the inter-pole pull rod and the contact side conductive arm and the contact finger side conductive arm is that two insulator columns are respectively arranged on the base through the cooperation of a bearing seat, the bearing seat is movably connected with the base through the cooperation of a bearing, the two bearing seats are respectively defined as a driving side bearing seat and a driven side bearing seat, and two sides of the inter-pole pull rod are respectively hinged with the driving side bearing seat and the driven side bearing seat;
The synchronous coordination between the two adjacent isolating switch bodies is that phase-to-phase pull rod joints are further arranged on the active side bearing seats of the isolating switch bodies, and two sides of the phase-to-phase pull rod are respectively hinged with the phase-to-phase pull rod joints on the active side bearing seats of the two adjacent isolating switch bodies, so that synchronous actions of the two adjacent isolating switch bodies are realized;
The main knife pull rod is hinged with the main pull rod joint, and the main knife pull rod is pulled to rotate, so that all the contacts of the main disconnecting switch body and the contact fingers are switched on and off.
3. The outdoor high-voltage inverted AC isolating switch as set forth in claim 2, wherein the bearing seat is matched with the base, a flange shaft is arranged on the base, two sides of the flange shaft extend out of two sides of the base respectively, one side of the flange shaft is connected with the bearing seat, and the other side of the flange shaft is connected with the auxiliary rotating component;
The flange shaft consists of a flange inner shaft and a flange outer shaft which are coaxially arranged inside and outside, and defines that one side of the flange shaft connected with the bearing seat is a first side, and one side connected with the auxiliary rotating assembly is a second side;
The flange shaft is connected with the bearing seat, a through hole for allowing the flange shaft to pass through is formed in the middle of the bearing seat, the bearing seat is directly sleeved on the outer side of the flange shaft, a first deep groove ball bearing is further arranged between the bearing seat and the flange shaft, the inner wall of the bearing seat is in a ladder shape, a first ladder section, a second ladder section and a third ladder section are sequentially arranged, the diameters of the first ladder section and the third ladder section are larger than the diameter of the second ladder section, the outer wall of the outer shaft of the flange is provided with a fourth ladder section which is attached to the inner wall of the first ladder section, a fifth ladder section which is attached to the inner wall of the second ladder section, the outer wall of the inner shaft of the flange is provided with a sixth ladder section which is matched with the inner wall of the third ladder section to form a cavity for accommodating the first deep groove ball bearing, a first backing plate in a ring shape is further arranged on one side of the bearing seat, and the first backing plate is fixed on the base through the matching of bolts;
the auxiliary rotating assembly comprises a second deep groove ball bearing, a thrust bearing, a shaft cover, a shaft sleeve, a bearing seat sealing plate, a bearing seat sealing cover and a base mounting plate, wherein a cavity for accommodating the second deep groove ball bearing and the thrust bearing is formed in the position of a second side of the flange inner shaft and the flange outer shaft, the outer wall of the flange inner shaft at the position of the second side is in a step shape, a seventh step section and an eighth step section are sequentially arranged, the seventh step section is positioned at one side close to the sixth step section, the diameter of the seventh step section is larger than that of the eighth step section, the inner wall of the flange outer shaft at the position of the second side is also in a step shape, a ninth step section and a tenth step section are sequentially arranged, the ninth step section is matched with the seventh step section to form a cavity for accommodating the second deep groove ball bearing, and the tenth step section is matched with the eighth step section to form a cavity for manner thrust bearing mounting;
The flange inner shaft is located at one side end of the second side and fixedly connected with the shaft cover through the cooperation of the bolts, one side end of the flange outer shaft is located at one side of the second side and fixedly connected with the bearing seat sealing cover through the cooperation of the bolts, the outer side of the flange outer shaft is further sleeved with a shaft sleeve, the shaft sleeve is fixedly connected with the flange outer shaft through the cooperation of the bolts, one side, close to the base, of the shaft sleeve is further provided with a ring-shaped second base plate, the second base plate is fixedly arranged on the base through the cooperation of the bolts, the outer side of the shaft sleeve is further provided with a base mounting plate for covering the shaft sleeve, and a bearing seat sealing plate is fixedly arranged at the end portion of the base mounting plate.
4. The outdoor high-voltage inverted AC disconnecting switch of claim 1, wherein said connecting rod assembly comprises a vertical connecting rod arranged vertically, a plurality of vertical connecting rod brackets and vertical connecting rod connecting clamps are arranged on the vertical connecting rod, and the top end of said vertical connecting rod is connected with the main knife pull rod through a main crank arm bearing seat.
5. The outdoor high-voltage inverted AC disconnecting switch of claim 4, wherein said main crank arm bearing seat comprises a main crank arm bearing seat body, a main crank arm shaft, a crank arm connecting shaft, a main pull rod joint and a switch-on/switch-off limiting assembly;
The connecting shaft of the crank arm is vertically arranged on the main crank arm bearing seat main body, the upper side and the lower side of the connecting shaft of the crank arm extend out from the upper side and the lower side of the main crank arm bearing seat main body respectively, a bearing seat sleeve is further arranged between the connecting shaft of the crank arm and the main crank arm bearing seat main body, the lower side of the connecting shaft of the crank arm is fixed with a vertical connecting rod through the matching of a connecting pin, the upper side of the connecting shaft of the crank arm is connected with a main crank arm shaft which is horizontally arranged and drives the main crank arm shaft to swing, a main pull rod connector is hinged on the main crank arm shaft, and the main pull rod connector is connected with a main cutter pull rod;
The opening and closing limiting assembly comprises an opening and closing support, and opening and closing limiting bolts which are arranged on two sides of the opening and closing support, wherein the opening and closing support is fixed on the main crank arm bearing seat main body and is arranged beside the main crank arm shaft, and the opening and closing limiting bolts and the closing limiting bolts are arranged on one side, adjacent to the main crank arm shaft, of the opening and closing support.
6. The outdoor high-voltage inverted AC disconnecting switch of claim 1 wherein said upper side of said wire holder is further provided with a equalizing ring surrounding the outside of the insulator post.
7. The outdoor high-voltage inverted AC isolating switch of claim 1, wherein four shielding cases are provided on one side of the contact finger, wherein the shielding cases are respectively an upper shielding case, a lower shielding case and side shielding cases, the upper shielding case and the lower shielding case are respectively positioned on the upper side and the lower side of the contact finger, and the contact finger and the contact are covered by the shielding cases in a closing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411627314.4A CN119132870A (en) | 2024-11-14 | 2024-11-14 | An outdoor high voltage inverted AC isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411627314.4A CN119132870A (en) | 2024-11-14 | 2024-11-14 | An outdoor high voltage inverted AC isolating switch |
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| Publication Number | Publication Date |
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| CN119132870A true CN119132870A (en) | 2024-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411627314.4A Pending CN119132870A (en) | 2024-11-14 | 2024-11-14 | An outdoor high voltage inverted AC isolating switch |
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| CN (1) | CN119132870A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315265Y (en) * | 2008-11-14 | 2009-09-23 | 平高集团有限公司 | A high voltage isolating switch |
| CN203674058U (en) * | 2014-01-21 | 2014-06-25 | 河北奥斯特电力设备有限公司 | GW4 high-voltage isolation switch |
| CN205303290U (en) * | 2016-01-12 | 2016-06-08 | 石家庄海斯特电气有限公司 | Isolating switch base |
| CN107248472A (en) * | 2017-07-27 | 2017-10-13 | 湖南长高高压开关有限公司 | A kind of V-type rotary open type disconnecting switch base drive device and its application method |
| CN109360762A (en) * | 2018-09-20 | 2019-02-19 | 江苏省如高高压电器有限公司 | A kind of disconnecting switch of three-phase ganged |
-
2024
- 2024-11-14 CN CN202411627314.4A patent/CN119132870A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201315265Y (en) * | 2008-11-14 | 2009-09-23 | 平高集团有限公司 | A high voltage isolating switch |
| CN203674058U (en) * | 2014-01-21 | 2014-06-25 | 河北奥斯特电力设备有限公司 | GW4 high-voltage isolation switch |
| CN205303290U (en) * | 2016-01-12 | 2016-06-08 | 石家庄海斯特电气有限公司 | Isolating switch base |
| CN107248472A (en) * | 2017-07-27 | 2017-10-13 | 湖南长高高压开关有限公司 | A kind of V-type rotary open type disconnecting switch base drive device and its application method |
| CN109360762A (en) * | 2018-09-20 | 2019-02-19 | 江苏省如高高压电器有限公司 | A kind of disconnecting switch of three-phase ganged |
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