Lightning arrester combined type ice-melting isolating switch

Abstract

The utility model relates to the technical field of power transmission equipment, and provides a combined ice-melting isolating switch of a lightning arrester. The lightning arrester combined type ice-melting isolating switch comprises a base, a fixed alternating-current insulating supporting column, a movable alternating-current insulating supporting column, a main conducting rod and a lightning arrester, the fixed alternating-current insulating supporting column is arranged on one side of the base, and the fixed alternating-current insulating supporting column is provided with a first fixed contact; the lightning arrester is arranged on the other side of the base and is provided with a second static contact; the movable alternating-current insulating support is arranged on the base and is positioned between the fixed alternating-current insulating support and the lightning arrester; the main conducting rod is arranged on the movable alternating current insulation supporting column, and the two ends of the main conducting rod are provided with movable contacts. The lightning arrester combined type ice-melting isolating switch solves the problem that in the prior art, equipment is installed in a split mode, the occupied area is large, the basic construction work amount of the equipment and the distance between outgoing line interval electrical equipment are reduced, the occupied area of a transformer substation can be effectively reduced, and land resources and engineering land cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of power transmission equipment technology, and in particular to a surge arrester combined with an ice-melting disconnect switch. Background Technology

[0002] The outgoing line bay within a substation refers to the connection area between the power lines transmitting electricity from the substation to the outside and the internal equipment of the substation. This area includes electrical equipment such as circuit breakers, disconnect switches, current transformers, and voltage transformers, which together form a complete circuit unit used to control and protect the power lines.

[0003] The equipment in the outgoing line bay of a substation is usually arranged in a straight line, which directly affects the overall size of the substation. The disconnecting switches and surge arresters used for de-icing in traditional outgoing line bays are independent of each other, and the maintenance intervals and electrical spacing need to be considered, which increases the footprint and the amount of foundation construction and installation work. Utility Model Content

[0004] This utility model provides a surge arrester combined with de-icing disconnect switch to solve the problem of large footprint caused by separate installation of equipment in the prior art. It realizes a surge arrester combined with de-icing disconnect switch, which reduces the amount of foundation construction work and the spacing between electrical equipment in the outgoing line bay, and can effectively reduce the land area of ​​the substation, saving land resources and engineering land costs.

[0005] The surge arrester combined de-icing disconnect switch provided by this utility model includes multiple switching units, wherein the switching unit includes:

[0006] Base;

[0007] A fixed AC insulating support is provided on one side of the base, and the fixed AC insulating support is provided with a first stationary contact;

[0008] A surge arrester is located on the other side of the base, and the surge arrester is provided with a second stationary contact;

[0009] A dynamic AC insulation support is provided on the base and located between the fixed AC insulation support and the surge arrester;

[0010] The main conductive rod is provided on the moving AC insulating support, and both ends of the main conductive rod are provided with moving contacts;

[0011] The main conductive rod is used to rotate in the horizontal direction to switch between a first position and a second position; in the first position, the two moving contacts are mutually limited by the first stationary contact and the second stationary contact; in the second position, the two moving contacts are released from the limitation of the first stationary contact and the second stationary contact.

[0012] According to the present invention, a combined surge arrester de-icing disconnect switch includes a base comprising:

[0013] At least two foundation columns spaced at intervals;

[0014] At least one connector is provided between the foundation columns to reinforce the foundation columns;

[0015] The equipment base frame is located on top of the foundation column, and the fixed AC insulation support, the dynamic AC insulation support, and the surge arrester are all located on the equipment base frame.

[0016] According to the present invention, a combined de-icing disconnector for a surge arrester is provided, wherein the base column includes a column body and a base, the top of the column body is connected to the equipment base frame, and the base is located at the bottom of the column body and is used to reinforce the column body.

[0017] According to the present invention, a combined de-icing disconnector with a surge arrester is provided, wherein the fixed AC insulation support, the dynamic AC insulation support, and the surge arrester are detachably mounted on the equipment base frame.

[0018] According to the present invention, a combined de-icing disconnector for surge arresters is provided, wherein both the fixed AC insulation support and the dynamic AC insulation support are provided with outdoor porcelain insulators on their exterior.

[0019] According to the present invention, a combined de-icing disconnector is provided, wherein the surge arrester includes a porcelain-insulated zinc oxide surge arrester.

[0020] According to the present invention, a surge arrester combined de-icing disconnect switch is provided, wherein the plurality of switch units include an A-phase surge arrester combined de-icing disconnect switch, a B-phase surge arrester combined de-icing disconnect switch and a C-phase surge arrester combined de-icing disconnect switch;

[0021] The constant AC insulation support on the A-phase surge arrester combined de-icing disconnect switch, the B-phase surge arrester combined de-icing disconnect switch, and the C-phase surge arrester combined de-icing disconnect switch is equipped with a terminal block;

[0022] The terminal blocks are connected in sequence by conductors.

[0023] According to the present invention, a surge arrester combined de-icing disconnect switch further includes an adjustment mechanism, which is disposed on the base and is used to drive the dynamic AC insulation support to rotate so that the main conductive rod switches between the first position and the second position.

[0024] According to the present invention, a surge arrester combined de-icing disconnect switch includes an adjusting mechanism comprising:

[0025] The drive rod is connected to the moving AC insulation support on the B-phase surge arrester combined de-icing disconnect switch to drive the moving AC insulation support to rotate;

[0026] At least two connecting rods are provided, which sequentially connect the dynamic AC insulation supports of the A-phase surge arrester combined de-icing disconnect switch, the B-phase surge arrester combined de-icing disconnect switch, and the C-phase surge arrester combined de-icing disconnect switch.

[0027] According to the present invention, a combined de-icing disconnector for a surge arrester is provided, wherein the dynamic AC insulation support is provided with a connecting wing, which is used to connect with the connecting rod.

[0028] The surge arrester combined with the de-icing disconnect switch provided by this utility model integrates the surge arrester and the disconnect switch into one unit. This design reduces the electrical spacing requirements between the devices, thereby reducing the overall footprint. At the same time, due to the reduction in the number of independent devices, the amount of foundation fabrication and installation work is also correspondingly reduced. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 This is a side view of the surge arrester combined de-icing disconnect switch provided by this utility model;

[0031] Figure 2 This is a front view of the surge arrester combined de-icing disconnect switch provided by this utility model;

[0032] Figure 3 This is a top view of the surge arrester combined de-icing disconnect switch provided by this utility model.

[0033] Figure label:

[0034] 100: Base; 110: Foundation column; 111: Column body; 112: Base; 120: Connector; 130: Equipment base frame;

[0035] 200: Fixed AC insulation support; 210: First stationary contact; 220: Terminal block;

[0036] 300: Dynamic AC insulation support post; 310: Connecting fin;

[0037] 400: Main conductive rod; 410: Moving contact;

[0038] 500: Surge arrester; 510: Second stationary contact;

[0039] 600: Adjustment mechanism; 610: Drive rod; 620: Connecting rod;

[0040] 700: Conductor. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] The following is combined Figures 1-3 This invention describes the structure and working principle of the present invention. It should be noted that the present invention is applied to a 220kV voltage level, while similar extensions can be made to the 110kV voltage level based on this invention.

[0043] The surge arrester-combined de-icing disconnect switch provided by this utility model has three switching units, namely, an A-phase surge arrester-combined de-icing disconnect switch, a B-phase surge arrester-combined de-icing disconnect switch, and a C-phase surge arrester-combined de-icing disconnect switch arranged sequentially at intervals. Each of the A-phase, B-phase, and C-phase surge arrester-combined de-icing disconnect switches includes: a base 100, a fixed AC insulation support 200, a dynamic AC insulation support 300, a main conductive rod 400, and a surge arrester 500.

[0044] Specifically, the fixed AC insulation support 200 is disposed on one side of the base 100, and the fixed AC insulation support 200 is provided with a first stationary contact 210, the first stationary contact 210 having a first elastic limiting part; the surge arrester 500 is disposed on the other side of the base 100, the surge arrester 500 is provided with a second stationary contact 510, the second stationary contact 510 having a second elastic limiting part; the movable AC insulation support 300 is rotatably disposed on the base 100, and is located between the fixed AC insulation support 200 and the surge arrester 500; The main conductive rod 400 is disposed on the dynamic AC insulation support 300, and both ends of the main conductive rod 400 are provided with moving contacts 410. The main conductive rod 400 is used to rotate in the horizontal direction to switch between a first position and a second position. In the first position, the two moving contacts 410 are mutually limited with the first stationary contact 210 and the second stationary contact 510 in a one-to-one correspondence. In the second position, the two moving contacts 410 are in contact with and limited by both the first stationary contact 210 and the second stationary contact 510.

[0045] It should be noted that both the first and second elastic limiting parts are U-shaped structures, and the diameter of the opening is slightly smaller than the diameter of the moving contact 410. Under normal operating conditions, the main conductive rod 400 is in the second position, meaning that both moving contacts 410 are disconnected from the first stationary contact 210 and the second stationary contact 510. However, during ice melting, the main conductive rod 400 is in the first position, meaning that the two moving contacts 410 are connected one-to-one with the first stationary contact 210 and the second stationary contact 510, thus forming a closed conductive circuit.

[0046] This invention integrates the surge arrester 500 and the disconnecting switch into a single device. This design reduces the required electrical spacing between devices, thereby reducing the overall footprint. Simultaneously, the reduced number of independent devices also decreases the amount of foundation fabrication and installation work. Furthermore, this design not only improves space utilization but also simplifies the operation process.

[0047] Reference Figure 1 In some embodiments of this utility model, the base 100 includes two spaced-apart foundation columns 110, a connector 120, and an equipment base frame 130. The connector 120 is fixedly installed between the middle of the two foundation columns 110 to reinforce the foundation columns 110. The equipment base frame 130 is detachably mounted on the top of the foundation columns 110 by bolts. The fixed AC insulation support 200, the dynamic AC insulation support 300, and the surge arrester 500 are all located on the equipment base frame 130.

[0048] In the aforementioned structure, the base 100 enhances the overall structural stability through the use of two foundation columns 110 and an intermediate connector 120, while the equipment base frame 130 is detachably bolted to the top of the foundation columns 110, facilitating equipment installation and maintenance. This design not only improves the equipment's stability but also simplifies on-site installation and subsequent maintenance. By integrating the fixed AC insulation support 200, the dynamic AC insulation support 300, and the surge arrester 500 onto a compact equipment base frame 130, the electrical spacing requirements between devices are reduced, the maintenance interval requirements are lowered, and thus the overall footprint is reduced.

[0049] Reference Figure 1 In some embodiments of this utility model, the foundation column 110 includes a column body 111 and a base 112. The top end of the column body 111 is connected to the equipment base frame 130, and the base 112 is located at the bottom end of the column body 111. The base 112 is used to reinforce the column body 111.

[0050] In the aforementioned structure, the column body 111 is responsible for fixing and supporting the equipment base 130 and the equipment installed on it, while the base 112, with its large contact area and robust design, distributes the pressure borne by the column, thereby enhancing the stability of the entire structure. This design solves the instability problem that traditional column structures may encounter when facing natural disasters such as strong winds or earthquakes, reducing the risk of equipment damage due to external forces. Furthermore, the optimized design of the column body 111 and base 112 simplifies the installation process and improves the overall safety of the equipment. Therefore, in applications requiring high stability and reliability, this solution provides an effective solution, ensuring the safe operation of the equipment and extending its service life.

[0051] In some possible embodiments, the column body 111 can be made of high-strength steel to ensure sufficient compressive and bending resistance. This material choice allows the column body 111 to maintain structural integrity and stability when facing various stresses from the external environment. The design of the column body 111 should also consider mechanical performance requirements; its cross-sectional shape can be circular or square, selected according to the specific application scenario, to optimize load-bearing capacity and reduce material usage.

[0052] The base 112 can be constructed of concrete or reinforced concrete to provide a solid supporting foundation. The base 112, with its large contact area, effectively distributes the load pressure from the column body 111, thereby reducing the risk of ground settlement and enhancing the overall structural stability. The connection between the base 112 and the column body 111 can be achieved through embedded parts or welding, ensuring a firm bond between the two, forming a unified whole.

[0053] In the aforementioned structure, the material selection and design of the column body 111 and the base 112 work together to not only improve the mechanical properties of the entire foundation column 110 but also enhance its durability and reliability. For example, the high-strength steel supporting the column body 111 enables it to remain stable under harsh weather conditions, while the robust construction of the base 112 further ensures the column's stability, preventing displacement or overturning due to external forces. Therefore, this material and structural design provides reliable support for the equipment, ensuring its safe operation under various working conditions and extending the facility's service life. Simultaneously, this design also facilitates subsequent maintenance and inspection, reducing long-term operating costs.

[0054] Reference Figure 1 In some embodiments of this utility model, the fixed AC insulation support 200, the dynamic AC insulation support 300, and the surge arrester 500 are detachably mounted on the equipment base frame 130.

[0055] In the above structure, the fixed AC insulation support 200, the dynamic AC insulation support 300, and the surge arrester 500 can be connected to the equipment base frame 130 through standardized interfaces. Specifically, the bottom of the fixed AC insulation support 200, the dynamic AC insulation support 300, and the surge arrester 500 are provided with matching mounting holes or interfaces, and the corresponding positions of the equipment base frame 130 are provided with corresponding fixing points or slots.

[0056] The stationary AC insulation support 200, the dynamic AC insulation support 300, and the surge arrester 500 are secured to the equipment base frame 130 by bolts or other fasteners. For example, the stationary AC insulation support 200 can be securely connected by multiple bolts passing through mounting holes on its bottom and screwing into pre-threaded holes on the equipment base frame 130. Similarly, the dynamic AC insulation support 300 and the surge arrester 500 can be installed in the same manner. This design allows for quick disassembly and reinstallation of the components when maintenance or replacement is required, without the need for extensive adjustments to the entire system.

[0057] To ensure the safety and stability of the connection, the fixing points on the equipment base 130 can be designed with reinforcing ribs or reinforced structures to increase local rigidity and prevent loosening due to long-term vibration or external stress. Furthermore, electrical connections between components can be achieved through plug-in connectors or quick connectors, which not only simplifies the installation process but also improves system reliability.

[0058] In some embodiments of this utility model, both the fixed AC insulation support 200 and the dynamic AC insulation support 300 are equipped with outdoor porcelain insulators on their exteriors. The surge arrester 500 includes a porcelain-insulated zinc oxide surge arrester.

[0059] Both the fixed AC insulation post 200 and the dynamic AC insulation post 300 are equipped with outdoor porcelain insulators on their exterior. This design provides significant advantages in terms of the reliability and environmental adaptability of electrical equipment. The outdoor porcelain insulators possess excellent electrical insulation performance and weather resistance, enabling them to operate stably for extended periods in harsh outdoor environments. In this structure, these insulators effectively prevent current leakage and arcing, ensuring the safe operation of the power system.

[0060] Secondly, due to their high mechanical strength and anti-aging properties, outdoor porcelain insulators can withstand significant mechanical stress and the corrosive effects of wind, sand, rain, and snow in the natural environment. This not only extends the service life of the stable AC insulation post 200 and the dynamic AC insulation post 300 but also reduces the risk of equipment failure due to insulation failure. Furthermore, the smooth surface of outdoor porcelain insulators does not easily accumulate dust, helping to maintain their excellent insulation performance and further improving the reliability of the system.

[0061] Furthermore, by installing outdoor porcelain insulators on the exterior of the fixed AC insulation support 200 and the dynamic AC insulation support 300, the entire device can operate stably under various complex weather conditions. For example, in environments with high humidity or severe pollution, the outdoor porcelain insulators can effectively prevent the influence of moisture and pollutants on insulation performance, thereby ensuring the safety and stability of power transmission. This design reduces the need for frequent equipment maintenance, lowers operating costs, and improves the overall system availability and economy.

[0062] In some embodiments of this utility model, a terminal block 220 is provided at the top of the fixed AC insulation support 200. The terminal blocks 220 on the A-phase surge arrester combined de-icing disconnect switch, the B-phase surge arrester combined de-icing disconnect switch, and the C-phase surge arrester combined de-icing disconnect switch are connected sequentially through conductors 700, which can specifically be copper busbars. The first stationary contact 210 in the three-phase surge arrester combined de-icing disconnect switch can be sequentially connected through the terminal blocks 220 via the copper busbars.

[0063] Reference Figure 2In some embodiments of this utility model, an adjustment mechanism 600 is also included. The adjustment mechanism 600 is disposed on the base 100 and is used to drive the moving AC insulation support 300 to rotate, so that the main conductive rod 400 switches between a first position and a second position. The adjustment mechanism 600 includes a drive rod 610 and a connecting rod 620. The drive rod 610 is connected to the moving AC insulation support 300 on the B-phase surge arrester combined de-icing disconnect switch to drive the corresponding moving AC insulation support 300 to rotate. Two connecting rods 620 are provided, and the two connecting rods 620 are disposed between the moving AC insulation supports 300 in the A-phase surge arrester combined de-icing disconnect switch, the B-phase surge arrester combined de-icing disconnect switch and the C-phase surge arrester combined de-icing disconnect switch, sequentially connecting the moving AC insulation supports 300 in the A-phase surge arrester combined de-icing disconnect switch, the B-phase surge arrester combined de-icing disconnect switch and the C-phase surge arrester combined de-icing disconnect switch.

[0064] In the above structure, when it is necessary to switch the position of the main conductive rod 400, the adjusting mechanism 600 applies power through the drive rod 610, causing the moving AC insulation support 300 to rotate. Due to the presence of the connecting rod 620, this rotation can synchronously affect the moving AC insulation supports 300 of all phases, ensuring consistency of operation between phases. Specifically, the action of the drive rod 610 drives the rotation of the moving AC insulation support 300 on the B-phase surge arrester combined de-icing disconnector, and then transmits this motion to other moving AC insulation supports 300 through the connecting rod 620, enabling the main conductive rod 400 to synchronously switch from the first position to the second position or vice versa. This design not only simplifies the operation process but also ensures the coordination and stability of the system operation.

[0065] This solution addresses the potential asynchrony issues that can occur during traditional manual operation, preventing electrical faults and mechanical wear caused by inconsistent phase actions. Furthermore, centralized control reduces the need for manual intervention, improving system automation and safety. In complex power systems, this reliable switching mechanism is crucial for ensuring normal equipment operation, effectively preventing power outages and equipment damage due to misoperation or delays. Therefore, in the aforementioned structure, the design of the regulating mechanism 600 not only enhances the system's response speed and accuracy but also strengthens the overall equipment's safety and reliability, providing strong support for the stable operation of the power system. Simultaneously, this design facilitates maintenance and repair, reducing operation and maintenance costs.

[0066] Reference Figure 2 In some embodiments of this utility model, the AC insulating support column 300 is provided with a connecting wing 310, which is used to connect with the connecting rod 620.

[0067] Specifically, refer to Figure 3From left to right, the switches are: Phase A surge arrester combined with de-icing disconnector, Phase B surge arrester combined with de-icing disconnector, and Phase C surge arrester combined with de-icing disconnector. The Phase A and Phase C surge arrester combined with de-icing disconnectors each have one connecting fin 310, while the Phase B surge arrester combined with de-icing disconnector has two connecting fins 310, which connect to the left and right connecting rods 620 respectively.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lightning arrester combined ice-melting disconnector, characterized in that, The switch unit comprises: a base; a fixed AC insulation support provided on one side of the base, the fixed AC insulation support being provided with a first static contact; a lightning arrester provided on the other side of the base, the lightning arrester being provided with a second static contact; a movable AC insulation support provided on the base and located between the fixed AC insulation support and the lightning arrester; a main conductive rod provided on the movable AC insulation support, both ends of the main conductive rod being provided with movable contacts; wherein the main conductive rod is used to rotate in the horizontal direction to switch between a first position and a second position; in the first position, the two movable contacts are correspondingly limited by the first static contact and the second static contact; in the second position, the two movable contacts are released from the limitation of the first static contact and the second static contact.

2. The arrester combined ice-melting disconnecting switch according to claim 1, characterized in that, The base comprises: at least two spaced apart base columns; at least one connecting piece provided between the base columns to reinforce the base columns; a device base provided on the top of the base columns, the fixed AC insulation support, the movable AC insulation support and the lightning arrester being located in the device base.

3. The arrester combined ice-melting disconnecting switch according to claim 2, characterized in that, The base column comprises a column body and a base, the top end of the column body being connected with the device base, and the base being provided at the bottom end of the column body to reinforce the column body.

4. The arrester combined ice-melting disconnecting switch according to claim 2, characterized in that, The fixed AC insulation support, the movable AC insulation support and the lightning arrester are detachably provided on the device base.

5. The arrester combined ice-melting disconnecting switch according to claim 2, characterized in that, The fixed AC insulation support and the movable AC insulation support are both provided with outdoor porcelain insulators.

6. The arrester combined ice-melting disconnecting switch according to claim 5, characterized in that, The lightning arrester comprises a porcelain insulator zinc oxide lightning arrester.

7. The lightning arrester combined ice-melting disconnecting switch according to any one of claims 1-6, wherein a plurality of the switch units comprise an A-phase lightning arrester combined ice-melting disconnecting switch, a B-phase lightning arrester combined ice-melting disconnecting switch and a C-phase lightning arrester combined ice-melting disconnecting switch; the fixed AC insulation supports on the A-phase lightning arrester combined ice-melting disconnecting switch, the B-phase lightning arrester combined ice-melting disconnecting switch and the C-phase lightning arrester combined ice-melting disconnecting switch are all provided with terminal blocks; the terminal blocks are sequentially connected by conductors.

8. The arrester combined ice-melting disconnecting switch according to claim 7, characterized in that, Further comprising an adjusting mechanism provided on the base to drive the movable AC insulation support to rotate, so that the main conductive rod switches between the first position and the second position.

9. The arrester combined ice-melting disconnecting switch according to claim 8, characterized in that, The adjusting mechanism comprises: a driving rod connected with the movable AC insulation support on the B-phase lightning arrester combined ice-melting disconnecting switch to drive the movable AC insulation support to rotate; at least two connecting rods sequentially connecting the movable AC insulation supports in the A-phase lightning arrester combined ice-melting disconnecting switch, the B-phase lightning arrester combined ice-melting disconnecting switch and the C-phase lightning arrester combined ice-melting disconnecting switch.

10. The arrester combined ice-melting disconnecting switch according to claim 9, characterized in that, The movable AC insulation support is provided with a connecting fin used to connect with the connecting rod.

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