An open type combined electrical appliance

Abstract

The present invention relates to an open type combined electrical appliance, comprising a base; a circuit breaker assembly installed on the base, comprising a circuit breaker bracket, a circuit breaker grounding terminal, a tank body, a circuit breaker support insulator, an external mutual inductor and a static contact of an isolating switch; an isolating switch assembly installed on the base, comprising an isolating switch bracket, an isolating switch grounding terminal, an isolating switch support insulator, a conductive bar, an isolating switch moving contact and a pull rod; a grounding rod is also arranged on the side of each circuit breaker support insulator matched with the isolating switch support insulator, and a grounding contact matched with the grounding rod is installed on the circuit breaker support insulator; each pull rod is driven by a first linkage mechanism to synchronously lift and lower, and each ground rod is driven by a second linkage mechanism to synchronously rotate. The combined electrical appliance of the present invention realizes the synchronous swinging of each pull rod and each ground rod respectively through the cooperation of the first linkage mechanism and the second linkage mechanism, which greatly reduces the number of required intermediate transmission rods, simplifies the structure, and makes the operation more convenient.

Description

Technical Field

[0001] The invention relates to an electrical appliance, in particular to an open type combined electrical appliance. Background Art

[0002] At present, substations usually include electrical equipment such as transformers, switch cabinets, secondary control equipment and combined electrical appliances; among them, combined electrical appliances usually include circuit breakers, air disconnectors, grounding switches, mutual inductors, lightning arresters, busbars and cable terminals and other live parts. The above-mentioned live parts are enclosed by metal pipes through optimized design, and the enclosed metal pipes are filled with SF6 insulating gas with a certain pressure. Disconnectors and grounding switches are important switching electrical appliances in combined electrical appliances and need to be used in conjunction with circuit breakers.

[0003] For example, patent CN204118468U mentions an open-type combination electrical appliance and a substation. The open-type combination electrical appliance includes a disconnector, a grounding switch and a circuit breaker. The disconnector includes a supporting insulator, a terminal block, an isolating conductor, an insulating pull rod, an isolating moving contact, an isolating static contact and an isolating drive mechanism. The isolating static contact is fixed on the circuit breaker and is located on one side of the isolating moving contact; the grounding switch includes a mounting seat, three grounding knife tubes, three grounding moving contacts, three grounding static contacts and a grounding drive mechanism. The grounding static contact is fixed on the terminal block and is located on one side of the grounding moving contact.

[0004] In the open-type combination electrical appliance in the above-mentioned patent, when the isolating switch and the circuit breaker cooperate to realize the opening and closing action, the isolating conductor of the isolating switch is used to drive the isolating opening contact to cooperate with the isolating static contact on the insulator column of the circuit breaker through the up and down clap action to realize the opening of the circuit. When the isolating conductor is in action, the active swing arm drives the connecting rod and the driven swing arm to swing, and the driven swing arm drives the coaxial driving swing arm to swing, and finally the driving swing arm drives the insulating pull rod to move up and down, thereby pulling the isolating conductor to clap up and down. When the grounding action is performed, the motor needs to drive the cam to rotate, and then the cam drives the linkage rod to move up and down. The action of the linkage rod is then realized by the cooperation of the driving rod, the rotating shaft, the connecting rod, the swing rod and other components to realize the rotation of the three grounding knife tubes to achieve grounding. The entire opening and closing and grounding process requires the design of several connecting rods. The driving mechanism consists of many parts and the operation is cumbersome. In addition, when the three grounding knife tubes are linked to each other, a connection method similar to series connection is adopted. This connection method will result in the entire mechanism being unable to operate as long as one component cannot operate. In addition, during subsequent maintenance, maintenance personnel are required to check each component at a time to determine which component has a problem, which is not conducive to maintenance and is time-consuming. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an open type combined electrical appliance with convenient operation and simple structure.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: an open type combined electrical appliance, the innovation of which is: comprising

[0007] Base;

[0008] A circuit breaker assembly mounted on a base, the circuit breaker assembly comprising a circuit breaker bracket mounted on the base, a circuit breaker grounding terminal mounted on the circuit breaker bracket, three tanks arranged in parallel mounted on the upper end surface of the circuit breaker bracket, each tank being arranged horizontally, a circuit breaker support insulator connected to both sides of the upper end of the tank, an external mutual inductor being arranged between the circuit breaker support insulator and the tank, and a static contact of an isolating switch mounted on the circuit breaker support insulator;

[0009] An isolating switch assembly installed on the base, the isolating switch assembly includes an isolating switch bracket arranged on one side of the circuit breaker, the bottom end of the isolating switch bracket is fixed to the base through a pair of columns, an isolating switch grounding terminal is installed on the column, three isolating switch support insulators distributed in parallel are connected to the upper end surface of the isolating switch bracket, a conductive bar is hinged on the top of the isolating switch support insulator, and an isolating switch moving contact is also arranged on the side of the conductive bar away from the isolating switch support insulator, the conductive bar is pulled by an independent pull rod to swing up and down, thereby realizing the opening and closing of the isolating switch moving contact and the isolating switch static contact;

[0010] A grounding rod is vertically arranged beside each circuit breaker support insulator matched with the disconnector support insulator, and a grounding contact matched with the grounding rod is installed on the circuit breaker support insulator, and the grounding contact is connected with the static contact of the disconnector;

[0011] Each pull rod in the same isolating switch assembly is driven by the first linkage mechanism to rise and fall synchronously, and each grounding rod in the circuit breaker assembly matched with the same isolating switch assembly is driven by the second linkage mechanism to rotate synchronously.

[0012] Furthermore, the first linkage mechanism includes a first linkage shaft, which extends along the distribution direction of the tank body, and the first linkage shaft is connected to the pull rod through a first swing seat. There are three first swing seats, which are respectively connected to the three pull rods one by one. The first swing seat includes a first connecting plate, a first swing plate and a first connecting bolt. One side of the first connecting plate has an arc-shaped groove that fits the circumferential outer wall of the first linkage shaft, and after the arc-shaped groove of the first connecting plate fits the outer wall of the first linkage shaft, it is fixed to the first linkage shaft through the cooperation of a pair of first connecting bolts. The first connecting bolt is a U-shaped bolt. The first swing plate is fixed to the side of the first connecting plate away from the arc-shaped groove. The first swing plate is hinged to the bottom end of the pull rod. The first linkage shaft is driven to rotate by the first driving mechanism, and drives each pull rod to be raised and lowered synchronously.

[0013] The second linkage mechanism includes a second linkage shaft, which extends along the distribution direction of the tank body. The second linkage shaft is connected to the grounding rod through a second swing seat. There are three second swing seats, which are respectively connected to each grounding rod in a one-to-one manner. The second swing seat includes a second connecting plate, a second connecting bolt and a third connecting bolt. One side of the second connecting plate has an arc-shaped groove that fits the circumferential outer wall of the second linkage shaft. After the arc-shaped groove of the second connecting plate fits the outer wall of the second linkage shaft, the second connecting plate is fixed to the second linkage shaft through the cooperation of a pair of second connecting bolts. The second connecting bolt and the third connecting bolt are both U-shaped bolts. The bottom position of the grounding rod fits with the side of the second connecting plate away from the arc-shaped groove. After the grounding rod and the second connecting plate are fitted, the grounding rod and the second connecting plate are fixed through the cooperation of a pair of third connecting bolts. The second linkage shaft is driven to rotate by the second driving mechanism, and drives each grounding rod to swing synchronously in the same direction.

[0014] Further, the first driving mechanism includes an electric driving rod vertically arranged beside the first linkage shaft, the bottom end of the electric driving rod is connected to a driving motor and driven to rotate by the driving motor, the upper end of the electric driving rod is connected to the isolating switch bracket through the cooperation of the bearing and the bearing seat, and a horizontally arranged first rotating plate is also connected to the top of the electric driving rod, and the first rotating plate rotates with the rotation of the electric driving rod. The first driving plate is also connected to the outer wall of the first linkage shaft, and the first driving plate is hinged to the first rotating plate through the first connecting rod, and is driven by the first rotating plate to swing, thereby realizing the rotation of the first linkage shaft;

[0015] The second driving mechanism comprises a second electric component and a manual component, and the structure of the second electric component is the same as that of the first driving mechanism;

[0016] The manual assembly includes a manual driving rod vertically arranged beside the second linkage shaft, the upper side of the manual driving rod is installed on the isolating switch bracket through the cooperation of the bearing and the bearing seat, the top end of the manual driving rod is connected to a horizontally arranged second rotating plate, and the second rotating plate rotates with the rotation of the manual driving rod, and a second driving plate is also connected to the outer wall of the second linkage shaft, the second driving plate is hinged to the second rotating plate through the second connecting rod, and is driven by the second rotating plate to swing, thereby realizing the rotation of the second linkage shaft.

[0017] Furthermore, there are two isolating switch assemblies, which are respectively arranged on both sides of the circuit breaker.

[0018] Furthermore, the static contact of the isolating switch is installed on the top of the circuit breaker support insulator.

[0019] Furthermore, the static contact of the isolating switch is installed on the upper side end of the circuit breaker support insulator.

[0020] Furthermore, the static contact of the isolating switch includes a static contact body, which is a rectangular plate, and has an upwardly extending finger plate on both sides of the upper end surface of the static contact body. The finger plate is arranged at an angle, and its inclination direction is gradually inclined from bottom to top toward the other finger plate, so that the two finger plates form an eight-shaped structure.

[0021] Furthermore, the two circuit breaker support insulators on the same tank body are distributed in a V shape, and the angle formed between the two circuit breaker support insulators is between 30-35 degrees.

[0022] The advantages of the present invention are: the combined electrical apparatus of the present invention realizes the synchronous swing of each pull rod and each grounding rod respectively through the cooperation of the first linkage mechanism and the second linkage mechanism, which greatly reduces the number of required intermediate transmission rods, simplifies the structure, and makes the operation more convenient.

[0023] With regard to the design of the first linkage mechanism and the second linkage mechanism, the cooperation of the first linkage shaft, the first pendulum seat, the second linkage shaft and the second pendulum seat is utilized to realize a parallel drive connection between each pull rod or grounding rod. By adopting this connection method, when maintenance is required later, it is convenient for maintenance personnel to quickly understand which section has a problem, realize rapid troubleshooting and reduce maintenance time.

[0024] When two disconnector assemblies are used to cooperate with the circuit breaker assembly, when the disconnector static contact is installed on the top of the circuit breaker support insulator, the disconnector assembly and the circuit breaker assembly are combined to form the ZCW58A-40.5 outgoing line interval combined electrical structure; when the disconnector static contact is installed on the upper side of the circuit breaker support insulator, the disconnector assembly and the circuit breaker assembly are combined to form the ZCW58A-40.5 busbar interval combined electrical structure; and when only one disconnector assembly is used to cooperate with the circuit breaker assembly, a ZCW58A-40.5 main transformer interval combined electrical structure can be formed, which has various forms and can be selected and combined according to specific needs to meet different working conditions.

[0025] The combined electrical appliance of the present invention has the advantages of high integration, small footprint, high reliability, simple operation and maintenance, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the ZCW58A-40.5 outlet interval combined electrical appliance structure of the present invention.

[0027] Figure 2 for Figure 1 An enlarged schematic diagram of part A.

[0028] Figure 3 for Figure 1 An enlarged schematic diagram of part B.

[0029] Figure 4 for Figure 1 Enlarged schematic diagram of part C of FIG.

[0030] Figure 5 It is a schematic diagram of the ZCW58A-40.5 busbar bay combined electrical appliance structure in the present invention.

[0031] Figure 6 It is a schematic diagram of the ZCW58A-40.5 main transformer bay combined electrical appliance structure in the present invention. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0033] like Figure 1 An open type combined electrical appliance is shown, comprising

[0034] The base 1 is a hollow rectangular frame structure formed by welding a plurality of horizontal bars and longitudinal bars. A circuit breaker assembly and an isolating switch assembly are installed on the base 1. There is one circuit breaker assembly located in the middle of the base 1, and there are one or two isolating switch assemblies.

[0035] When there is one isolating switch assembly, the isolating switch assembly is arranged on one side of the circuit breaker assembly, and the isolating switch assembly and the circuit breaker assembly together form the ZCW58A-40.5 main transformer bay combination electrical structure, such as Figure 6 shown.

[0036] When there are two isolating switch assemblies, the two attic switch assemblies are respectively arranged on both sides of the circuit breaker. When the isolating switch static contact is installed on the top of the circuit breaker support insulator, the isolating switch assembly and the circuit breaker assembly are combined to form a ZCW58A-40.5 outlet interval combined electrical structure, such as Figure 1 As shown in FIG. 1 , when the static contact of the isolating switch is installed on the upper side of the circuit breaker support insulator, the isolating switch assembly and the circuit breaker assembly are combined to form a ZCW58A-40.5 busbar interval combined electrical structure, such as Figure 5 As shown, the forms are diverse and can be selected and combined according to specific needs to meet different working conditions.

[0037] The following is a further explanation using the ZCW58A-40.5 outlet interval combination electrical structure as an example:

[0038] The circuit breaker assembly includes a circuit breaker bracket 2 installed on a base 1. The circuit breaker bracket 2 is a hollow rectangular frame structure formed by connecting a plurality of horizontal bars, longitudinal bars and vertical bars. The bottom end of the circuit breaker bracket 2 is fixedly connected to the base 1 through the cooperation of bolts and nuts. A circuit breaker grounding terminal 201 is installed on the circuit breaker bracket 2, and the circuit breaker grounding terminal 201 is directly welded to the vertical bar of the circuit breaker bracket 2.

[0039] Three tank bodies 202 are installed in parallel on the upper end surface of the circuit breaker bracket 2. The tank body 202 is a hollow cylindrical tank structure, and the tank body 202 is horizontally installed on the circuit breaker bracket 2. The circuit breaker operating mechanism is installed in the tank body 202. A circuit breaker support insulator 203 is connected to both sides of the upper end of the tank body 202. An external transformer 204 is also arranged between the circuit breaker support insulator 203 and the tank body 202. The circuit breaker support insulator 203 is installed with a static contact 205 of the isolating switch.

[0040] The external transformer 204 uses a 40.5kV current transformer, which is used to measure, meter and protect the circuit breaker components. Its functional parameters can be configured and adjusted according to the project needs.

[0041] The two circuit breaker support insulators 203 on the same tank body 202 are distributed in a V shape, and the angle formed between the two circuit breaker support insulators 203 is between 30° and 35°.

[0042] In this embodiment, the circuit breaker assembly uses SF6 gas as the insulating and arc-extinguishing medium, adopts the self-energy arc-extinguishing principle, and is equipped with an existing special spring operating mechanism. It has the characteristics of strong breaking capacity, small operating work, and high reliability. A pointer-type density relay is used to monitor its pressure. Due to the use of the self-energy arc-extinguishing principle and the optimized design of the circuit breaker transmission system, the mechanical efficiency is effectively improved and the operating work is minimized.

[0043] like Figure 2 As shown in the schematic diagram, the isolating switch static contact 205 includes a static contact body 2051, which is a rectangular plate and is vertically arranged. The static contact body 2051 is connected to the circuit breaker support insulator 203 through an L-shaped plate 2052, and the static contact body 2051 and the L-shaped plate 2052 are formed by bending a whole plate, and the L-shaped plate 2052 and the circuit breaker support insulator 203 are fixed by the cooperation of bolts and nuts. There are upwardly extending finger plates 2053 on both sides of the upper end surface of the static contact body 2051, and the finger plates 2053 are inclined. The inclination direction of the finger plates 2053 is gradually inclined from bottom to top toward the other finger plate 2053, so that the two finger plates 2053 form an eight-shaped structure, and the finger plates 2053 and the static contact body 2051 are formed by cutting and bending a whole plate.

[0044] The isolating switch assembly includes an isolating switch bracket 3 arranged on one side of the circuit breaker, the bottom end of the isolating switch bracket 3 is fixed to the base 1 through a pair of columns 301, the bottom end of the column 301 is fixed to the base 1 by the cooperation of bolts and nuts, an isolating switch grounding terminal 302 is installed on the column 301, and the isolating switch grounding terminal 302 is directly welded to the side of the column 301, and three parallel isolating switch support insulators 303 are connected to the upper end surface of the isolating switch bracket 3, and a conductive bar 304 is hinged on the top of the isolating switch support insulator 303, and an isolating switch moving contact 305 is also arranged on the side of the conductive bar 304 away from the isolating switch support insulator 303, and the conductive bar 304 is pulled by an independent pull rod 306 to swing up and down, thereby realizing the opening and closing of the isolating switch moving contact 305 and the isolating switch static contact 205.

[0045] The isolating switch assembly is used to disconnect or connect the high-voltage line under no-load conditions, so as to convert the high-voltage line, change the operating mode, and implement safe electrical isolation between the busbar under maintenance and high-voltage electrical equipment such as circuit breakers. It can also separate and combine small inductance and capacitance currents of a certain value, and has the ability to open and close the busbar to convert current. The isolating switch assembly in this embodiment can be equipped with one or two JW10-40.5 grounding switches for grounding during maintenance on the circuit breaker side, line side / busbar side.

[0046] The isolating switch assembly adopts a double-column vertical fracture structure with the ability of self-cleaning contacts, achieving a maintenance-free effect and improving contact reliability; the conductive circuit is composed of a static contact and a moving contact. The moving contact finger is a self-powered structure made of a new material with high strength, high conductivity and high elasticity. The contact is clamped by the elastic force of the contact finger itself, and the contact finger and the contact finger seat are fixed with bolts to avoid the possibility of oil and dust entering their contact points and increasing the contact resistance; the grounding switch is linked with the isolating switch, and the operation is simple and reliable; all parts made of ferrous metal are anti-corrosion treated by hot-dip galvanizing or other more reliable methods; the isolating switch and its matching operating mechanism, all non-conductive contact rotating parts are coated with No. 2 low-temperature grease; the isolating switch and its matching operating mechanism, the sleeve material is self-lubricating engineering plastic.

[0047] A vertically arranged grounding rod 4 is also arranged beside each circuit breaker post insulator 203 that cooperates with the disconnector post insulator. At the same time, a grounding contact 401 that cooperates with the grounding rod 4 is installed on the circuit breaker post insulator 203, and the grounding contact 401 is connected to the disconnector static contact 205. Specifically, the grounding contact 401 is installed on a horizontally arranged connecting plate 402, and the connecting plate 402 is in contact with the L-shaped plate 2052 and is fixed to the L-shaped plate 2052 by the cooperation of bolts and nuts.

[0048] Each pull rod 306 in the same isolating switch assembly is driven by the first linkage mechanism to be synchronously lifted and lowered, and each grounding rod 4 in the circuit breaker assembly matched with the same isolating switch assembly is driven by the second linkage mechanism to be synchronously rotated.

[0049] The first linkage mechanism includes a first linkage shaft 5, which extends along the distribution direction of the tank body 202, and the first linkage shaft 5 is installed on the isolating switch bracket 3 through the cooperation of several bearings and bearing seats. The first linkage shaft 5 is connected to the pull rod 306 through the first swing seat. There are three first swing seats, which are respectively connected to the three pull rods 306 one by one. The first swing seat includes a first connecting plate 502, a first swing plate 503 and a first connecting bolt. An arc-shaped groove is provided on one side of the first connecting plate 502, which is fitted with the circumferential outer wall of the first linkage shaft 5. After the arc-shaped groove of the first connecting plate 502 is fitted with the outer wall of the first linkage shaft 5, it is fixed to the first linkage shaft 5 through the cooperation of a pair of first connecting bolts. The first connecting bolt is a U-shaped bolt. Four through holes are opened on the first connecting plate 502 for the first connecting bolt to pass through. After the first connecting bolt passes through the through hole on the first connecting plate 502, it is tightened with a nut, thereby realizing the fixation between the first connecting plate 502 and the first linkage shaft 5.

[0050] The first pendulum plate 503 is fixed on a side of the first connecting plate 502 away from the arc groove. The first pendulum plate 503 is directly fixed at the middle position of the first connecting plate 502. The first pendulum plate 503 is hinged to the bottom end of the pull rod 306. The first linkage shaft 5 is driven by the first driving mechanism to rotate, and drives each first pendulum seat to rotate synchronously. The rotation of the first pendulum seat will pull each pull rod 306 to rise and fall synchronously through the cooperation of the first pendulum plate 503, thereby realizing the synchronous up and down swinging of each conductive bar 304.

[0051] The first driving mechanism includes an electric driving rod 504 vertically arranged beside the first linkage shaft 5, the bottom end of the electric driving rod 504 is connected to a driving motor and driven to rotate by the driving motor, the driving motor is installed in an electric control box 505, the electric control box 505 is fixed on the column 301 by the cooperation of bolts and nuts, the upper end of the electric driving rod 504 is connected to the isolating switch bracket 3 by the cooperation of bearings and bearing seats, and a horizontally arranged first rotating plate 506 is also connected to the top of the electric driving rod 504, the first rotating plate 506 rotates with the rotation of the electric driving rod 504, and a first driving plate 507 is also connected to the outer wall of the first linkage shaft 5, the fixing structure between the first driving plate 507 and the first linkage shaft 5 is the same as the fixing structure between the first swing plate 503 and the first linkage shaft 5, and will not be described in detail in this embodiment, the first driving plate 507 is hinged to the first rotating plate 506 through the first connecting rod 508, and is driven by the first rotating plate 506 to swing, thereby realizing the rotation of the first linkage shaft 5.

[0052] The second linkage mechanism includes a second linkage shaft 6, which extends along the distribution direction of the tank body 202. The second linkage shaft 6 is connected to the grounding rod 4 through a second swing seat. There are three second swing seats, which are respectively connected to each grounding rod 4 one by one. The second swing seat includes a second connecting plate 601, a second connecting bolt and a third connecting bolt. One side of the second connecting plate 601 has an arc-shaped groove that fits with the circumferential outer wall of the second linkage shaft 6. After the arc-shaped groove of the second connecting plate 601 fits with the outer wall of the second linkage shaft 6, it is fixed to the second linkage shaft 6 through a pair of second connecting bolts. The second connecting bolt and the third connecting bolt are both U-shaped bolts. Four through holes for the second connecting bolts to pass through are opened on the second connecting plate 601, and nuts are used after the second connecting bolts pass through the through holes on the second connecting plate 601, thereby realizing the connection and fixation between the second connecting plate 601 and the second linkage shaft 6.

[0053] The bottom position of the grounding rod 4 is in contact with the side of the second connecting plate 601 away from the arc-shaped groove, and after the grounding rod 4 is in contact with the second connecting plate 601, the grounding rod 4 and the second connecting plate 601 are fixed together by a pair of third connecting bolts. Four through holes for the third connecting bolts to pass through are opened on the second connecting plate 601, and after the third connecting bolts pass through the through holes on the second connecting plate 601, they are tightened with nuts, thereby achieving the fixation between the grounding rod 4 and the second connecting plate 601. The second linkage shaft 6 is driven to rotate by the second driving mechanism, and drives each grounding rod 4 to swing synchronously in the same direction.

[0054] The second driving mechanism includes a second electric component and a manual component, wherein the structure of the second electric component is the same as that of the first driving mechanism, and will not be described in detail in this embodiment.

[0055] The manual assembly includes a manual drive rod vertically arranged beside the second linkage shaft 6, the upper side of the manual drive rod is installed on the isolating switch bracket 3 through the cooperation of the bearing and the bearing seat, the top of the manual drive rod is connected to a horizontally arranged second rotating plate, the second rotating plate rotates with the rotation of the manual drive rod, and a second drive plate is also connected to the outer wall of the second linkage shaft 6, the second drive plate is hinged to the second rotating plate through the second connecting rod, and is driven by the second rotating plate to swing, thereby realizing the rotation of the second linkage shaft. The cooperation principle and structure between the manual drive rod and the second linkage shaft 6 in this embodiment are the same as the cooperation principle and structure between the electric drive rod 504 and the first linkage shaft 5, and will not be described in detail here.

[0056] As for the design of the second driving mechanism, the second electric component and the manual component are matched to realize both electric grounding and manual grounding, and the operation is more diversified.

[0057] The combined electrical appliance of the present invention realizes the synchronous swing of each pull rod and each grounding rod respectively through the cooperation of the first linkage mechanism and the second linkage mechanism, which greatly reduces the number of required intermediate transmission rods, simplifies the structure, and makes the operation more convenient.

[0058] With regard to the design of the first linkage mechanism and the second linkage mechanism, the cooperation of the first linkage shaft, the first pendulum seat, the second linkage shaft and the second pendulum seat is utilized to realize a parallel drive connection between each pull rod or grounding rod. By adopting this connection method, when maintenance is required later, it is convenient for maintenance personnel to quickly understand which section has a problem, realize rapid troubleshooting and reduce maintenance time.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An open type combination appliance, characterized in that: include Base; A circuit breaker assembly mounted on a base, the circuit breaker assembly comprising a circuit breaker bracket mounted on the base, a circuit breaker grounding terminal mounted on the circuit breaker bracket, three tanks arranged in parallel mounted on the upper end surface of the circuit breaker bracket, each tank being arranged horizontally, a circuit breaker support insulator connected to both sides of the upper end of the tank, an external mutual inductor being arranged between the circuit breaker support insulator and the tank, and a static contact of an isolating switch mounted on the circuit breaker support insulator; An isolating switch assembly installed on the base, the isolating switch assembly includes an isolating switch bracket arranged on one side of the circuit breaker, the bottom end of the isolating switch bracket is fixed to the base through a pair of columns, an isolating switch grounding terminal is installed on the column, three isolating switch support insulators distributed in parallel are connected to the upper end surface of the isolating switch bracket, a conductive bar is hinged on the top of the isolating switch support insulator, and an isolating switch moving contact is also arranged on the side of the conductive bar away from the isolating switch support insulator, the conductive bar is pulled by an independent pull rod to swing up and down, thereby realizing the opening and closing of the isolating switch moving contact and the isolating switch static contact; A grounding rod is vertically arranged beside each circuit breaker support insulator matched with the disconnector support insulator, and a grounding contact matched with the grounding rod is installed on the circuit breaker support insulator, and the grounding contact is connected with the static contact of the disconnector; Each pull rod in the same disconnector assembly is driven by the first linkage mechanism to rise and fall synchronously, and each grounding rod in the circuit breaker assembly matched with the same disconnector assembly is driven by the second linkage mechanism to rotate synchronously; The first linkage mechanism includes a first linkage shaft, which extends along the distribution direction of the tank body, and is connected to the pull rod through a first swing seat. There are three first swing seats, which are respectively connected to the three pull rods in a one-to-one correspondence; The second linkage mechanism includes a second linkage shaft, which extends along the distribution direction of the tank body. The second linkage shaft is connected to the grounding rod through a second swing seat. There are three second swing seats, which are respectively connected to each grounding rod in a one-to-one correspondence.

2. The open type combination electrical appliance according to claim 1, characterized in that: The first pendulum seat includes a first connecting plate, a first swing plate and a first connecting bolt. One side of the first connecting plate has an arc-shaped groove that fits with the circumferential outer wall of the first linkage shaft. After the arc-shaped groove of the first connecting plate fits with the outer wall of the first linkage shaft, it is fixed to the first linkage shaft through a pair of first connecting bolts. The first connecting bolt is a U-shaped bolt. The first swing plate is fixed to the side of the first connecting plate away from the arc-shaped groove. The first swing plate is hinged to the bottom end of the pull rod. The first linkage shaft is driven to rotate by the first driving mechanism and drives each pull rod to rise and fall synchronously. The second pendulum seat includes a second connecting plate, a second connecting bolt and a third The connecting bolt has an arc-shaped groove on one side of the second connecting plate that fits with the circumferential outer wall of the second linkage shaft, and after the arc-shaped groove of the second connecting plate fits with the outer wall of the second linkage shaft, it is fixed to the second linkage shaft through the cooperation of a pair of second connecting bolts, the second connecting bolt and the third connecting bolt are both U-shaped bolts, the bottom position of the grounding rod fits with the side of the second connecting plate away from the arc-shaped groove, and after the grounding rod and the second connecting plate fit, the grounding rod and the second connecting plate are fixed through the cooperation of a pair of third connecting bolts, the second linkage shaft is driven to rotate by the second driving mechanism, and drives each grounding rod to swing synchronously in the same direction.

3. The open type combined electrical appliance according to claim 2, characterized in that: The first driving mechanism comprises an electric driving rod vertically arranged beside the first linkage shaft, the bottom end of the electric driving rod is connected to a driving motor and driven to rotate by the driving motor, the upper end of the electric driving rod is connected to the isolating switch bracket through the cooperation of a bearing and a bearing seat, and a horizontally arranged first rotating plate is also connected to the top of the electric driving rod, and the first rotating plate rotates with the rotation of the electric driving rod, and the first driving plate is also connected to the outer wall of the first linkage shaft, the first driving plate is hinged to the first rotating plate through the first connecting rod, and is driven by the first rotating plate to swing, thereby realizing the rotation of the first linkage shaft; the second driving The mechanism includes a second electric component and a manual component. The structure of the second electric component is the same as that of the first driving mechanism. The manual component includes a manual driving rod vertically arranged beside the second linkage shaft. The upper side of the manual driving rod is installed on the isolating switch bracket through the cooperation of the bearing and the bearing seat. The top of the manual driving rod is connected to a horizontally arranged second rotating plate, and the second rotating plate rotates with the rotation of the manual driving rod. A second driving plate is also connected to the outer wall of the second linkage shaft. The second driving plate is hinged to the second rotating plate through a second connecting rod, and is driven by the second rotating plate to swing, thereby realizing the rotation of the second linkage shaft.

4. The open type combined electrical appliance according to claim 1, characterized in that: There are two isolating switch assemblies in total, which are respectively arranged on both sides of the circuit breaker.

5. The open type combined electrical appliance according to claim 4, characterized in that: The static contact of the isolating switch is installed on the top of the support insulator of the circuit breaker.

6. The open type combined electrical appliance according to claim 4, characterized in that: The static contact of the isolating switch is installed on the upper side end of the circuit breaker support insulator.

7. The open type combined electrical appliance according to claim 1, characterized in that: The static contact of the isolating switch includes a static contact body, which is a rectangular plate. There are upwardly extending finger plates on both sides of the upper end surface of the static contact body. The finger plates are arranged obliquely, and their inclination direction is gradually inclined from bottom to top toward the other finger plate, so that the two finger plates form an eight-shaped structure.

8. The open type combined electrical appliance according to claim 1, characterized in that: The two circuit breaker support insulators on the same tank body are distributed in a V shape, and the angle formed between the two circuit breaker support insulators is between 30-35 degrees.

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