CN215578330U

CN215578330U - A photovoltaic power generation grid-connected outdoor isolation switch

Info

Publication number: CN215578330U
Application number: CN202121984265.1U
Authority: CN
Inventors: 陆文卿; 秦伟
Original assignee: Nantong Tongming Group Co ltd; Nantong Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Nantong Tongming Group Co ltd; Nantong Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-01-18
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a photovoltaic power generation grid-connected outdoor isolating switch which comprises a bottom plate, wherein a pair of conductive connecting rods are installed at the upper end of the bottom plate, rotating shafts are installed at the upper ends of the two conductive connecting rods, connecting rod bodies are installed on the rotating shafts, plastic insulating sleeves are arranged on the surfaces of the conductive connecting rods, the conductive connecting rods are prevented from being corroded by rainwater, a protective sleeve is installed at one end of each connecting rod body, a protective support is installed at the bottom plate at the lower end of the protective sleeve, and a contact can be effectively prevented from being polluted or oxidized through the protective sleeve, so that the safe and stable operation of a power grid is effectively guaranteed. The isolating switch has the advantages that the contact can be effectively protected no matter the isolating switch body is in the opening state or the closing state, so that the contact is effectively prevented from being polluted or oxidized, and the safe and stable operation of a power grid is effectively guaranteed.

Description

Photovoltaic power generation grid-connected outdoor isolating switch

Technical Field

The utility model belongs to the technical field of electric power, and relates to a photovoltaic power generation grid-connected outdoor isolating switch.

Background

The photovoltaic power generation grid connection is that direct current generated by a solar component is converted into alternating current meeting the requirements of a mains power grid through a grid connection inverter and then is directly connected into a public power grid, a photovoltaic power generation system is connected into a large power grid in a micro-grid mode for grid connection operation and mutually supports the large power grid, the method is an important technical outlet for improving the scale of photovoltaic power generation, the grid connection operation of the photovoltaic power generation system is also a main direction of future technical development, the range and flexibility of solar energy use can be expanded through grid connection, a photovoltaic power generation grid connection outdoor isolating switch is used as a breaking electric appliance with the largest use amount on a power line, the opening and closing of the breaking electric appliance can be remotely controlled through a corresponding transmission mechanism, and the method is mainly used for isolating a power supply of a distribution line during maintenance so as to improve the safety of operation.

The photovoltaic power generation grid-connected outdoor isolating switch is mainly divided into a low-voltage isolating switch and a high-voltage isolating switch, the low-voltage isolating switch is mainly used for distributed grid connection, the high-voltage isolating switch is mainly used for centralized grid connection, in the operation process of a power grid, because the contact of the open-type isolating switch is greatly influenced by the external environment, the contact is exposed outside for a long time and can be polluted by a large amount of dust and garbage, in addition, the contact is easily oxidized by being blown by wind and rain, at present, for the low-voltage isolating switch in the distributed grid connection, because the voltage is lower and the heat productivity is less, corresponding protective sleeve parts are usually arranged at the connection position of the two contacts, so that a certain protective effect is exerted on the contacts, however, the existing protective sleeve parts are too simple in structure, can only protect the contacts in a switching-on state, the protective effect is limited, and the contacts are still easily polluted by dust or oxidized by rainwater, the safe and stable operation of the power grid is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the photovoltaic power generation grid-connected outdoor isolating switch can effectively protect the contact no matter the isolating switch body is in a switching-off state or a switching-on state, so that the contact is effectively prevented from being polluted or oxidized, and the safe and stable operation of a power grid is further effectively guaranteed.

The utility model provides a photovoltaic power generation grid-connected outdoor isolating switch which comprises a bottom plate, wherein a pair of conductive connecting rods are installed at the upper end of the bottom plate, rotating shafts are installed at the upper ends of the two conductive connecting rods, connecting rod bodies are installed on the rotating shafts, plastic insulating sleeves are arranged on the surfaces of the conductive connecting rods, the conductive connecting rods are prevented from being corroded by rainwater, a protective sleeve is installed at one end of each connecting rod body, a protective support is installed at the bottom plate at the lower end of the protective sleeve, and a contact can be effectively prevented from being polluted or oxidized through the protective sleeve, so that the safe and stable operation of a power grid is effectively guaranteed.

Furthermore, a fixed handle is arranged on the side surface of the connecting rod body, so that the connecting rod body rotates on the conductive connecting rod, and an operator is prevented from directly contacting with the connecting rod body.

The connecting rod body further comprises a group of connecting contacts, one of the connecting contacts is of a knife blade structure, the other connecting contact is provided with a groove, and the connecting contacts of the knife blade structure can be arranged in the connecting contacts with the groove structures.

Further the protective bracket includes the support body, and the upper end of support body has the dwang and adjusts the pole, the side of dwang has the recess, has fixed buckle on this recess, can install the connection body of rod of connecting the contact in the recess, has played fixed effect, the side of adjusting the pole has the external screw thread, installs at the support originally internally, this internal thread hole that has of support, is connected with the external screw thread of adjusting the pole side, can control the position of adjusting the pole on the support body, and the upper end of adjusting the pole has the portion of bearing, has the recess in this portion of bearing for place the connection body of rod.

Further the protective sheath is insulating pipeline including the centre, connects the body of rod to place in insulating pipeline, and the protective tube has been installed at insulating pipeline's both ends, the protective tube is installed in the side of the body of rod of connecting.

Further the side of insulating pipeline is the bellows structure, at two connecting rod body pivoted in-process, can also keep insulating pipeline overall structure, avoids insulating pipeline to connect the contact in the connecting rod body and causes the jam, influences the transmission of electric power among the photovoltaic power generation system.

Further the inboard of protective tube is smooth texture, makes the protective tube can slide on the side of the body of rod of connecting, can also avoid the rainwater to get into simultaneously, has played the protection effect to the connection contact in the body of rod of connecting.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a photovoltaic power generation grid-connected outdoor isolating switch of the utility model;

FIG. 2 is a schematic view of a connection rod body structure in the photovoltaic power generation grid-connected outdoor isolating switch of the utility model;

FIG. 3 is a schematic diagram of a protective bracket structure in the photovoltaic power generation grid-connected outdoor isolating switch of the utility model;

figure 4 is utility model a protective sheath structural schematic in photovoltaic power generation is incorporated into power networks outdoor isolator.

In the figure: 1. a base plate; 2. a conductive connecting rod; 3. a rotating shaft; 4. connecting the rod body; 5. a protective sleeve; 6. a protective bracket; 7. fixing a handle; 8. a connection contact; 9. a stent body; 10. rotating the rod; 11. adjusting a rod; 12. an insulated pipe; 13. a bellows structure; 14. and (4) a protective pipe.

Detailed Description

The following explains the specific embodiment of the utility model relates to a photovoltaic power generation grid-connected outdoor isolating switch in detail with reference to the attached drawings.

As shown in fig. 1, the utility model provides a photovoltaic power generation grid-connected outdoor isolating switch, which comprises a bottom plate 1, wherein a pair of conductive connecting rods 2 are installed at the upper end of the bottom plate 1, rotating shafts 3 are installed at the upper ends of the two conductive connecting rods 2, connecting rod bodies 4 are installed on the rotating shafts 3, plastic insulating sleeves are arranged on the surfaces of the conductive connecting rods 2 to prevent the outer portions of the conductive connecting rods 2 from being corroded by rainwater, a protective sleeve 5 is installed at one end, connected with each other, of each connecting rod body 4, a protective support 6 is installed at the bottom plate 1 at the lower end of each protective sleeve 5, and a contact can be effectively prevented from being polluted or oxidized through the protective sleeve 5, so that the safe and stable operation of a power grid is effectively guaranteed.

As shown in fig. 2, a fixed handle 7 is installed on the side surface of the connection rod body 4, so that the connection rod body 4 rotates on the conductive connection rod 2, and an operator is prevented from directly contacting the connection rod body 4.

According to the above, wherein the connection rod 4 comprises a set of connection contacts 8, one of the connection contacts 8 is in a blade structure, and the other connection contact 8 has a groove, the connection contact 8 in the blade structure can be mounted in the connection contact 8 in the groove structure.

As shown in fig. 3, the protective bracket 6 includes a bracket body 9, the upper end of the bracket body 9 has a rotating rod 10 and an adjusting rod 11, the top of the rotating rod 10 is installed at the middle part of the side of the adjusting rod 11 and is movably connected, the side of the rotating rod 10 has a groove, a fixing buckle is arranged on the groove, the connecting rod body 4 of the connecting contact 8 can be installed in the groove, a fixing effect is achieved, the side of the adjusting rod 11 has an external thread and is installed in the bracket body 9, an internal thread hole is arranged in the bracket body 9 and is connected with the external thread of the side of the adjusting rod 11, the position of the adjusting rod 11 on the bracket body 9 can be controlled, the upper end of the adjusting rod 11 has a bearing part, and a groove is arranged in the bearing part and is used for placing the connecting rod body 4.

As shown in fig. 4, the protective sleeve 5 includes an insulating pipe 12 in the middle, the connecting rod body 4 is placed in the insulating pipe 12, protective pipes 14 are installed at two ends of the insulating pipe 12, and the protective pipes 14 are installed at the side surfaces of the connecting rod body 4.

According to the above, the side surface of the insulating pipeline 12 is the corrugated pipe structure 13, so that the whole structure of the insulating pipeline 12 can be kept in the rotating process of the two connecting rod bodies 4, and the phenomenon that the insulating pipeline 12 blocks the connection of the connecting contacts 8 in the connecting rod bodies 4 to influence the transmission of electric power in the photovoltaic power generation system is avoided.

According to the above, the inner side of the protection tube 14 is smooth texture, so that the protection tube 14 can slide on the side surface of the connection rod body 4, and meanwhile, rainwater can be prevented from entering, and a protection effect is achieved on the connection contact 8 in the connection rod body 4.

The working principle of the photovoltaic power generation grid-connected outdoor isolating switch is as follows: when isolator disconnection, through promoting protective bracket 6 height, loosen the fixed buckle in the 6 recesses of protective bracket, make the connection body of rod 4 in the disconnection, protective sheath 5 department insulating tube 12 is bellows structure 13, has higher flexible performance, makes the connection body of rod 4 have great space in the bellows and separates, and protective tube 14 slides in the side of the connection body of rod 4, makes the centre of protective sheath 5 be in insulating protection state with the external world.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A photovoltaic power generation grid-connected outdoor disconnecting switch, characterized in that it comprises a base plate, a pair of conductive connecting rods are installed on the upper end of the base plate, and a rotating shaft is installed on the upper ends of the two said conducting connecting rods, on which A connecting rod body, the surface of the conductive connecting rod is provided with a plastic insulating cover to prevent the outside of the conductive connecting rod from being eroded by rain, a protective cover is installed at one end of the connecting rod body, and a protective bracket is installed on the bottom plate of the lower end of the protective cover, The protective cover can effectively prevent the contacts from being polluted or oxidized, thereby effectively ensuring the safe and stable operation of the power grid.

2 . The photovoltaic power generation grid-connected outdoor disconnect switch according to claim 1 , wherein a fixed handle is installed on the side of the connecting rod, so that the connecting rod rotates on the conductive connecting rod, so as to avoid the operator and the connecting rod. 3 . direct contact.

3 . The photovoltaic power generation grid-connected outdoor isolation switch according to claim 2 , wherein the connecting rod body comprises a set of connecting contacts, wherein one connecting contact is a knife structure, and the other connecting contact is a knife structure. 4 . With the groove, the connecting contact of the blade structure can be installed in the connecting contact of the groove structure.

4 . The photovoltaic power generation grid-connected outdoor disconnect switch according to claim 1 , wherein the protective bracket comprises a bracket body, the upper end of the bracket body has a rotating rod and an adjusting rod, and the side of the rotating rod has a concave rod. 5 . The groove has a fixed buckle, and the connecting rod body connecting the contacts can be installed in the groove, which plays a fixed role. The side of the adjustment rod has external threads and is installed in the bracket body. The bracket body There is an inner thread hole inside, which is connected with the outer thread on the side of the adjusting rod, and can control the position of the adjusting rod on the bracket body.

5 . The photovoltaic power generation grid-connected outdoor disconnect switch according to claim 1 , wherein the protective sleeve comprises an insulating pipe in the middle, the connecting rod body is placed in the insulating pipe, and protective pipes are installed at both ends of the insulating pipe. 6 . , the protective pipe is installed on the side of the connecting rod body.

6 . The photovoltaic power generation grid-connected outdoor disconnect switch according to claim 5 , wherein the side surface of the insulating pipe is a corrugated pipe structure, and during the rotation of the two connecting rods, the entire insulating pipe can also be maintained. 7 . The structure avoids the blockage of the connecting contacts in the connecting rod body caused by the insulating pipe, which affects the transmission of electric power in the photovoltaic power generation system.

7 . The photovoltaic power generation grid-connected outdoor disconnect switch according to claim 5 , wherein the inner side of the protective pipe is smooth textured, so that the protective pipe can slide on the side of the connecting rod body, and can also avoid rainwater. 8 . Entering, it has a protective effect on the connecting contacts in the connecting rod body.