Portable bypass load switch pole

Abstract

The utility model discloses a portable bypass load switch pole which comprises a pole body, an upper wire inlet copper bar is vertically installed on the top of the pole body and used for being connected with an external cable plug, a lower wire outlet copper bar is horizontally installed on one side of the pole body and used for being connected with an external cable plug, and the lower wire outlet copper bar is used for being connected with the external cable plug. The bottom of the column body is connected with an arc extinguishing assembly, the arc extinguishing assembly is used for cooling and extinguishing electric arcs and rapidly disconnecting a circuit, a safety assembly is installed below one end, close to the upper wire inlet copper rod, of the lower wire outlet copper rod, and the safety assembly is used for protecting the safety of the whole load switch. As a mobile and portable product, the device is small in size and light in weight, adopts a vacuum arc extinguishing mode, can quickly disconnect a circuit, can directly obtain single-phase power from a distribution line or can obtain three-phase power through three-phase combination during temporary power taking and utilization of an outdoor line, and is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of load switches, in particular to a portable bypass load switch pole. Background Art

[0002] A load switch is a switching device between a circuit breaker and an isolating switch. It has a simple arc extinguishing device and can cut off the rated load current and a certain overload current, but cannot cut off the short-circuit current.

[0003] The bypass load switches installed on the existing transmission lines in suburban or remote areas are all three-phase fixed, which are costly and difficult to maintain. Therefore, the coverage of remote areas or suburbs is insufficient, resulting in great trouble when these areas without bypass load switches need temporary electricity. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a portable bypass load switch pole, which can solve the technical problem that the existing bypass load switches in remote areas or suburbs are insufficient in coverage, resulting in very troublesome technical problems when temporary electricity is needed.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a portable bypass load switch pole, comprising:

[0006] Column;

[0007] An upper inlet copper rod, which is vertically installed on the top of the column and is used to connect an external cable plug;

[0008] A lower outlet copper rod, which is horizontally installed on one side of the column and is used to connect an external cable plug;

[0009] An arc extinguishing assembly, which is connected to the bottom of the column and is used to cool and extinguish the arc and quickly disconnect the circuit;

[0010] A safety component is installed below the lower outgoing copper rod near one end of the upper incoming copper rod to protect the safety of the entire load switch.

[0011] Preferably, the arc extinguishing assembly comprises a vacuum arc extinguishing chamber connected to the bottom end of the upper incoming copper rod, the bottom of the vacuum arc extinguishing chamber is a movable conductive rod, the movable conductive rod is connected to an insulating pull rod through a screw, the lower end of the insulating pull rod is provided with an internally hollow sleeve, the bottom of the sleeve is threadedly connected to a cover plate, a connecting rod is vertically movably inserted in the cover plate, the top surface of the sleeve is fixedly connected to a disc spring, the disc spring is sleeved on the outside of the connecting rod, and the bottom end of the disc spring is fixed on the connecting rod, but there is a gap between the top of the connecting rod and the top surface of the sleeve;

[0012] When the connecting rod does not move, the disc spring is in an open state; when the connecting rod is subjected to upward pressure, it moves in the sleeve and compresses the spring.

[0013] Preferably, a threaded hole is vertically opened inside the connecting rod, and the connecting rod is connected to an external circuit breaker operating mechanism through the threaded hole.

[0014] Preferably, the safety component includes a power-taking capacitor connected to the lower outlet copper rod through a double-headed screw, the power-taking capacitor is a ceramic capacitor, and is used to determine whether the lower outlet copper rod is charged; the lower end of the power-taking capacitor is connected to brass, and the brass is connected to an external charged display through a nut, and a voltage-equalizing network is installed on the top of the power-taking capacitor, and the voltage-equalizing network is used to evenly distribute the electric field at the high-voltage end of the power-taking capacitor and reduce the unit electric field strength at the high-voltage end of the capacitor;

[0015] It also includes a connecting piece connected between the lower end of the vacuum arc extinguishing chamber and the lower outlet copper rod.

[0016] Preferably, the upper incoming copper rod and the lower outgoing copper rod are used for matching connection with an external cable, and the top ends of the upper incoming copper rod and the lower outgoing copper rod are both embedded with watchband contacts.

[0017] Preferably, the column is provided with a connector at a position corresponding to the upper incoming copper rod and the lower outgoing copper rod, the upper incoming copper rod and the lower outgoing copper rod are installed in the connector, and the connector is used to cooperate with an external cable connection and to isolate the arc.

[0018] Preferably, a bottom plate is fixedly mounted on the bottom of the column, and a sealing ring is surrounded at the edge of the top surface.

[0019] Preferably, circular bosses are symmetrically arranged on both sides of the lower ends of the front and rear surfaces of the column, and mounting holes for mounting an external circuit breaker operating mechanism are provided through the circular bosses;

[0020] Handles are fixedly mounted on the upper and lower ends of the outer surface of the column away from the lower outlet copper rod.

[0021] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0022] As a mobile and portable product, this device is small in size and light in weight. It uses vacuum arc extinguishing to quickly disconnect the circuit. When temporarily taking power from outdoor lines, it can directly obtain single-phase power from the distribution line, or it can obtain three-phase power by a three-phase combination, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0024] Figure 2 This is the test diagram of the upper and lower equal angle axes of the utility model;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model when the bottom is tilted;

[0026] Figure 4 This is a schematic diagram of the main structure of the utility model;

[0027] Among them: 1. Cylinder; 2. Upper incoming copper rod; 3. Vacuum arc extinguishing chamber; 4. Connector; 5. Double-headed screw; 6. Lower outgoing copper rod; 7. Voltage-equalizing net; 8. Insulating pull rod; 9. Power-taking capacitor; 10. Brass; 11. Round boss; 12. Sealing ring; 13. Bottom plate; 14. Handle; 15. Connector; 16. Sleeve; 17. Disc spring; 18. Cover plate; 19. Connecting rod; 20. Strap contact finger. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0029] Embodiment 1

[0030] like Figure 1 As shown, the utility model provides a portable bypass load switch pole, including a column 1, an upper incoming copper rod 2 is vertically installed on the top of the column 1, and the upper incoming copper rod 2 is used to connect an external cable plug, a lower outgoing copper rod 6 is horizontally installed on one side of the column 1, and the lower outgoing copper rod 6 is used to connect an external cable plug, and an arc extinguishing component is connected to the bottom of the column 1, and the arc extinguishing component is used to cool and extinguish the arc and quickly disconnect the circuit, and a safety component is installed below the lower outgoing copper rod 6 near one end of the upper incoming copper rod 2, and the safety component is used to protect the safety of the entire load switch;

[0031] A limiting groove is provided on the top surface of the cover plate 18, and a convex ring is provided on the outer surface of the lower end of the connecting rod 19, which is overlapped on the limiting groove through the convex ring, and the limiting of the connecting rod 19 is achieved through the cooperation of the convex ring and the limiting groove;

[0032] In this embodiment, the entire device is mainly used for bypass load switches on electric poles that are not installed in remote areas. The upper incoming copper rod 2 and the lower outgoing copper rod 6 are used as conductors to connect to the cable plug. One pole is used as one phase. The load switch can directly obtain single-phase electricity from the distribution line, or three-phase electricity by three-phase combination; the arc extinguishing component is set to use vacuum arc extinguishing to quickly disconnect the circuit; the safety component is set to prevent insulation breakdown or partial discharge, and it can also timely judge whether the electrical equipment has operating voltage through the live display when opening the switch to avoid personal injury;

[0033] As a mobile and portable product, this device is small in size and light in weight. It uses vacuum arc extinguishing to quickly disconnect the circuit. Compared with the SF6 gas arc extinguishing method commonly used in bypass load switches on the market, there is no need to worry about risks such as SF6 leakage in terms of reliability. When temporarily taking electricity from outdoor lines, single-phase electricity can be obtained directly from the distribution line, or three-phase electricity can be obtained by a three-phase combination, which is very convenient.

[0034] Embodiment 2

[0035] like Figure 1 As shown, the arc extinguishing assembly includes a vacuum arc extinguishing chamber 3 connected to the bottom end of the upper incoming copper rod 2, and the column 1 is provided with five umbrella skirt shapes corresponding to the vacuum arc extinguishing chamber 3. The vacuum arc extinguishing chamber 3 is used for arc extinguishing during the opening and closing process of the load switch, and the bottom thereof is a moving conductive rod, and the moving conductive rod is connected to an insulating pull rod 8 through a screw rod. The column 1 is provided with an umbrella skirt shape at the corresponding position of the insulating pull rod 8, and the lower end of the insulating pull rod 8 is provided with an internally hollow sleeve 16, and the bottom of the sleeve 16 is threadedly connected to a cover plate 18, and a connecting rod 19 is vertically movably inserted in the cover plate 18, and the top surface of the sleeve 16 is fixedly connected to a disc spring 17, and the disc spring 17 is sleeved on the outside of the connecting rod 19, and the bottom end of the disc spring 17 is fixed to the convex ring of the connecting rod 19, but there is a gap between the top of the connecting rod 19 and the top surface of the sleeve 16;

[0036] When the connecting rod 19 does not move, the disc spring 17 is in an open state; when the connecting rod 19 is subjected to upward pressure, it moves in the sleeve 16 and compresses the spring;

[0037] A threaded hole is vertically formed inside the connecting rod 19, and the connecting rod 19 is connected to the external circuit breaker operating mechanism through the threaded hole;

[0038] In this embodiment, the column 1 is provided with five umbrella skirt shapes at the position corresponding to the vacuum interrupter 3, which is used to increase the surface creepage distance, and can prevent misoperation such as improper installation of the external cable quick connector, and avoid the discharge between the handle 14 or the upper and lower outlets from endangering the personal safety of the operator; the column 1 is provided with an umbrella skirt shape at the position corresponding to the insulating pull rod 8, which can increase the creepage distance of the high voltage to the mechanism of the lower outlet copper rod 6 and the moving end of the vacuum interrupter 3;

[0039] The main internal structures of the vacuum interrupter 3 are, from top to bottom, a static conductive rod, a contact system, a bellows and a moving conductive rod. The moving conductive rod is connected to the contact system through the bellows. When the connecting rod 19 is connected to the circuit breaker operating mechanism, the circuit breaker operating mechanism drives the connecting rod 19 to move. The connecting rod 19 begins to move upward in the sleeve 16 and compresses the disc spring 17, thereby driving the insulating pull rod 8 upward. The insulating pull rod 8 drives the moving conductive rod to slide. The movement of the moving conductive rod closes the two contacts in the contact system and completes the circuit connection. When the vacuum switch disconnects the current, the insulating pull rod 8 moves downward and drives the moving conductive rod downward. At this time, the two contacts in the vacuum interrupter 3 are separated and an arc is generated between them until the arc is extinguished when the current naturally passes through zero, thus completing the circuit disconnection.

[0040] Embodiment 3

[0041] like Figure 1 As shown, the safety component includes a power-taking capacitor 9 connected to the lower outlet copper rod 6 through a double-headed screw 5, the portion of the column 1 corresponding to the power-taking capacitor 9 is an umbrella skirt shape, and the power-taking capacitor 9 is a ceramic capacitor, which is used to determine whether the lower outlet copper rod 6 is charged; the lower end of the power-taking capacitor 9 is connected to a brass 10, and the brass 10 is connected to an external charged display through a nut, and a voltage-equalizing network 7 is installed on the top of the power-taking capacitor 9, and the voltage-equalizing network 7 is used to evenly distribute the electric field at the high-voltage end of the power-taking capacitor 9 and reduce the unit electric field strength at the high-voltage end of the capacitor;

[0042] The safety component also includes a connector 4 connected between the lower end of the vacuum interrupter 3 and the lower outgoing copper rod 6, and the connector 4 is a copper foil soft conductor.

[0043] In this embodiment, the part of the column 1 corresponding to the power-taking capacitor 9 is an umbrella skirt shape, which can isolate the discharge of the suspended voltage on the epoxy surface of the high-voltage end area of ​​the power-taking capacitor 9 to the power-taking fixing nut. Since the product is used in an outdoor environment, the powder layer on the surface of the pole is difficult to avoid, so the suspended voltage is usually high, so the umbrella skirt also has a spacing to increase the creepage distance of the suspended voltage;

[0044] The copper foil soft conductor is connected between the vacuum arc chamber 3 and the lower outlet copper rod 6. It has good electrical conductivity and thermal conductivity, can effectively conduct current and dissipate heat, can withstand the high temperature and high pressure environment inside the arc chamber, and ensure the stable operation of the equipment; the balancing grid is used to evenly distribute the electric field at the high-voltage end of the power-taking capacitor 9, reduce the unit electric field strength at the high-voltage end of the capacitor, and prevent insulation breakdown or poor local discharge; the power-taking capacitor 9 is a sensor for the operator to judge whether the lower outlet copper rod 6 is still energized after the load switch is opened. By connecting the power-taking capacitor 9 to an external energized display, it can be intuitively displayed on the energized display whether the electrical equipment has an operating voltage.

[0045] Embodiment 4

[0046] like Figure 2 , Figure 3 , Figure 4 As shown, the upper incoming copper rod 2 and the lower outgoing copper rod 6 are used to cooperate with the external cable for connection, and the top of the upper incoming copper rod 2 and the top of the lower outgoing copper rod 6 are both embedded with a strap contact finger 20;

[0047] The column 1 is provided with a connector 15 at the position corresponding to the upper incoming copper rod 2 and the lower outgoing copper rod 6. The upper incoming copper rod 2 and the lower outgoing copper rod 6 are installed in the connector 15. The connector 15 is used to cooperate with the external cable connection and to isolate the arc.

[0048] In this embodiment, the top of the upper inlet copper rod 2 and the lower outlet copper rod 6 are both embedded with a strap contact finger 20 to facilitate cooperation with an external cable;

[0049] The two connectors 15 are both made of epoxy resin, which can isolate the arc.

[0050] Embodiment 5

[0051] like Figure 1 , Figure 3 As shown, a bottom plate 13 is fixedly installed at the bottom of the column 1, and a sealing ring 12 is surrounded at the edge of the top surface;

[0052] Circular bosses 11 are symmetrically arranged on both sides of the lower ends of the front and rear surfaces of the column 1, and mounting holes for mounting an external circuit breaker operating mechanism are provided through the circular bosses 11;

[0053] Handles 14 are fixedly mounted on the upper and lower ends of the outer surface of the column 1 on one side away from the lower outlet copper rod 6;

[0054] In this embodiment, the bottom plate 13 is fixed by 6 M6 brass 10 nuts, and the bottom plate 13 is used to seal the pole, which can prevent dust and condensation from invading the pole; the sealing ring 12 can improve the sealing of the bottom plate 13; the circuit breaker operating mechanism is horizontally fixed by 4 M5 brass 10 inserts and fixed by 12 M5 brass 10 inserts;

[0055] The four circular bosses 11 of the column 1 correspond to each other in pairs, and a mounting hole is opened through each of the two circular bosses 11. The circuit breaker operating mechanism is installed through the mounting hole. Twelve M5 brass 10 inserts are evenly pre-embedded on each circular boss 11. The shape of the circular boss 11 can increase the epoxy thickness of the area, and can also serve as a fixing flange for fixing the corresponding shaft accessories of the circuit breaker operating mechanism.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable bypass load switch pole, characterized in that: include: Column (1); An upper inlet copper rod (2), the upper inlet copper rod (2) being vertically mounted on the top of the column (1) and being used for connecting an external cable plug; A lower outlet copper rod (6), the lower outlet copper rod (6) being horizontally mounted on one side of the column (1) and being used for connecting an external cable plug; An arc extinguishing assembly, which is connected to the bottom of the column (1) and is used to cool and extinguish the arc and quickly disconnect the circuit; A safety component is installed below the lower outgoing copper rod (6) near one end of the upper incoming copper rod (2) to protect the safety of the entire load switch.

2. A portable bypass load switch pole according to claim 1, characterized in that: The arc extinguishing assembly comprises a vacuum arc extinguishing chamber (3) connected to the bottom end of the upper incoming copper rod (2), the bottom of the vacuum arc extinguishing chamber (3) is a movable conductive rod, the movable conductive rod is connected to an insulating pull rod (8) through a screw, the lower end of the insulating pull rod (8) is provided with an internally hollow sleeve (16), the bottom of the sleeve (16) is threadedly connected to a cover plate (18), a connecting rod (19) is vertically movably inserted in the cover plate (18), the top surface of the sleeve (16) is fixedly connected to a disc spring (17), the disc spring (17) is sleeved on the outside of the connecting rod (19), and the bottom end of the disc spring (17) is fixed on the connecting rod (19), but there is a gap between the top of the connecting rod (19) and the top surface of the sleeve (16); When the connecting rod (19) does not move, the disc spring (17) is in an open state; when the connecting rod (19) is subjected to upward pressure, it moves in the sleeve (16) and compresses the spring.

3. A portable bypass load switch pole according to claim 2, characterized in that: A threaded hole is vertically opened inside the connecting rod (19), and the connecting rod (19) is connected to an external circuit breaker operating mechanism through the threaded hole.

4. A portable bypass load switch pole according to claim 1, characterized in that: The safety component comprises a power-taking capacitor (9) connected to the lower outlet copper rod (6) via a double-headed screw (5), wherein the power-taking capacitor (9) is a ceramic capacitor and is used to determine whether the lower outlet copper rod (6) is charged; the lower end of the power-taking capacitor (9) is connected to a brass (10), and the brass (10) is connected to an external charge display via a nut; a voltage-equalizing network (7) is installed at the top of the power-taking capacitor (9), and the voltage-equalizing network (7) is used to evenly distribute the electric field at the high-voltage end of the power-taking capacitor (9) and reduce the unit electric field strength at the high-voltage end of the capacitor; It also includes a connecting piece (4) connected between the lower end of the vacuum interrupter (3) and the lower outlet copper rod (6).

5. A portable bypass load switch pole according to claim 1, characterized in that: The upper incoming copper rod (2) and the lower outgoing copper rod (6) are used for matching and connecting with external cables, and the top ends of the upper incoming copper rod (2) and the lower outgoing copper rod (6) are both embedded with watchband contact fingers (20).

6. A portable bypass load switch pole according to claim 1, characterized in that: The column (1) is provided with a connector (15) at a position corresponding to the upper incoming copper rod (2) and the lower outgoing copper rod (6); the upper incoming copper rod (2) and the lower outgoing copper rod (6) are installed in the connector (15); the connector (15) is used to cooperate with an external cable connection and to isolate an electric arc.

7. A portable bypass load switch pole according to claim 1, characterized in that: A bottom plate (13) is fixedly mounted on the bottom of the column (1), and a sealing ring (12) surrounds the edge of the top surface.

8. The portable bypass load switch pole according to claim 1, characterized in that: Circular bosses (11) are symmetrically arranged on both sides of the lower ends of the front and rear surfaces of the column (1), and a mounting hole for mounting an external circuit breaker operating mechanism is provided through the circular boss (11); Handles (14) are fixedly mounted on the upper and lower ends of the outer surface of the column (1) on one side away from the lower outlet copper rod (6).

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