Insulating sleeve for outdoor pole-mounted switch

Abstract

The utility model relates to an outdoor pole-mounted switch insulating sleeve, which comprises a sleeve body, the sleeve body comprises an opening and closing mechanism cavity, a vacuum arc-extinguishing chamber cavity and an isolation switch cavity which are sequentially arranged from top to bottom, one side of the opening and closing mechanism cavity is provided with a detachable outer shell, and the other side of the opening and closing mechanism cavity is provided with a current transformer cavity. An upper wiring terminal insulation sleeve is arranged on the outer side of the current transformer cavity, a detachable cover cap is arranged at the upper end of the opening and closing mechanism cavity, an opening allowing the isolation knife switch to swing in and out is formed in one side of the isolation knife switch cavity, and a lower wiring terminal insulation sleeve is arranged at the lower end of the isolation knife switch cavity. According to the utility model, a switch-on and switch-off mechanism, a vacuum arc-extinguishing chamber, an isolation switch and other mechanisms can be integrated in the bushing body, so that the whole structure of the product is compact, the appearance is beautiful, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of electric power equipment, in particular to an insulating bushing for an outdoor pole-mounted switch. Background Art

[0002] The outdoor pole-mounted protection switch is a device for ensuring the safety of electricity use, and an insulating sleeve is usually required on its outside, and the insulating sleeve structure usually needs to be designed in accordance with the characteristics of the outdoor pole-mounted switch.

[0003] The Chinese utility model patent with authorization announcement number CN208570451U discloses an insulating sleeve structure and an outdoor pole switch, the outdoor pole switch includes a high-voltage gas tank, the high-voltage gas tank is provided with a vacuum arc extinguishing chamber, and the outdoor pole switch is provided with a voltage sensor. The insulating sleeve structure is matched with the above-mentioned outdoor pole switch characteristics to arrange a first guide rod and a second guide rod inside to make the connection more reliable. At the same time, the voltage sensor is sleeved on the outside of the second guide rod, and insulating sleeve structures are provided on both sides of the vacuum arc extinguishing chamber, so that voltage measuring devices are provided on both sides of the vacuum arc extinguishing chamber to realize the function of collecting voltage on both sides.

[0004] The Chinese utility model patent with authorization announcement number CN216250531U discloses an outdoor pole-mounted switch with an anti-twist electromagnetic repulsion mechanism, wherein a vacuum arc extinguishing chamber and an epoxy pull rod are arranged inside the composite bushing, and the lower end of the epoxy pull rod is connected to the opening and closing drive mechanism to trigger the vacuum arc extinguishing chamber. The composite bushing adopts an upper and lower two-section structure so that an outlet board can be installed in the middle.

[0005] With the development of technology, the structure of outdoor pole-mounted switches has also changed further. For example, opening and closing mechanisms and isolating switches have been added to ensure that the electrical lines are completely disconnected. Therefore, the insulating sleeves also need to make structural changes accordingly. Utility Model Content

[0006] The purpose of the utility model is to provide an insulating bushing for an outdoor pole switch, which can integrate opening and closing mechanisms, vacuum arc extinguishing chambers, isolating knife switches and other mechanisms into the bushing body, thereby ensuring that the overall product structure is compact, the appearance is beautiful, and it is easy to use.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] An insulating bushing for an outdoor pole switch comprises a bushing body, and the bushing body comprises a switching mechanism cavity, a vacuum arc extinguishing chamber cavity and an isolating knife switch cavity which are arranged in sequence from top to bottom, wherein a detachable outer shell is provided on one side of the switching mechanism cavity, and a current transformer cavity is provided on the other side, and an upper terminal insulating sleeve is provided on the outer side of the current transformer cavity, a detachable cover is provided on the upper end of the switching mechanism cavity, an opening is formed on one side of the isolating knife switch cavity for the isolating knife switch to swing in and out, and a lower terminal insulating sleeve is provided on the lower end of the isolating knife switch cavity.

[0009] A first shed is provided outside the vacuum interrupter cavity.

[0010] Second umbrella skirts are provided inside and outside the isolation knife switch cavity.

[0011] The upper end of the opening and closing mechanism cavity is provided with a raised portion with a screw hole on the open side, and the lower end is provided with a connecting plate with a screw hole. The upper end of the outer shell is fixedly connected to the side of the raised portion by bolts, and the lower end is fixedly connected to the connecting plate by bolts.

[0012] A hinged seat is provided inside the lower end of the isolation knife switch cavity, a lower terminal is provided inside the lower terminal insulating sleeve outside the lower end of the isolation knife switch cavity, and the lower terminal is connected to the hinged seat through a line, and the lower end of the isolation knife switch is hinged on the hinged seat.

[0013] An isolation knife switch insulation shield is arranged on the outer side of the isolation knife switch, and a pull ring is arranged on the outer side of the isolation knife switch insulation shield.

[0014] The advantages and positive effects of the utility model are:

[0015] 1. The utility model can integrate the opening and closing mechanism, vacuum arc extinguishing chamber, isolation knife switch and other mechanisms into the bushing body, thereby ensuring that the overall structure of the product is compact, the appearance is beautiful, and it is easy to use.

[0016] 2. A detachable outer shell is provided on one side of the opening and closing mechanism cavity at the upper end of the sleeve body of the utility model, so as to facilitate the installation and maintenance of the opening and closing mechanism.

[0017] 3. The utility model provides a first shed on the outside of the vacuum arc extinguishing chamber to increase the creepage distance, and provides a second shed on the inside and outside of the isolation knife switch cavity to increase the creepage distance.

[0018] 4. The isolation knife gate cavity of the utility model is semi-arc-shaped, and an opening is formed on one side for the isolation knife gate to swing in and out. At the same time, an isolation knife gate insulating shield is provided on the outside of the isolation knife gate. When the isolation knife gate is lifted, the isolation knife gate cavity and the isolation knife gate insulating shield can form a relatively complete insulating protection cavity to achieve insulation protection for the isolation knife gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 This is a schematic structural diagram of another angle of the utility model.

[0021] Figure 3 This is a schematic diagram of the use state of the utility model.

[0022] Figure 4 This is a schematic diagram of the utility model in another angle of use.

[0023] Figure 5 for Figure 4 Enlarged view of point A in .

[0024] Among them, 1 is the bushing body, 101 is the vacuum interrupter cavity, 1011 is the first umbrella skirt, 102 is the isolating knife switch cavity, 1021 is the second umbrella skirt, 103 is the lower terminal insulation sleeve, 104 is the outer shell, 105 is the cover, 106 is the opening and closing mechanism cavity, 1061 is the upper terminal insulation sleeve, 1062 is the current transformer cavity, 1063 is the protrusion, 1064 is the connecting plate, 2 is the opening and closing mechanism, 3 is the isolating knife switch, 301 is the isolating knife switch insulation cover, 302 is the pull ring, 4 is the control module, 5 is the current transformer, 6 is the upper terminal, 7 is the lower terminal, 8 is the moving contact end rod, 9 is the static contact end rod, and 10 is the elastic clamp. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the utility model includes a bushing body 1, and the bushing body 1 includes a closing and opening mechanism cavity 106, a vacuum interrupter cavity 101 and an isolation knife switch cavity 102 arranged in sequence from top to bottom, wherein Figures 1-2 As shown, a detachable outer shell 104 is provided on one side of the opening and closing mechanism cavity 106, and a current transformer cavity 1062 is provided on the other side, and an upper terminal insulation sleeve 1061 is provided on the outer side of the current transformer cavity 1062, and a detachable cover 105 is provided on the upper end of the opening and closing mechanism cavity 106, and the isolation knife gate cavity 102 is semi-arc-shaped, and an opening is formed on one side for the isolation knife gate 3 to swing in and out, and a lower terminal insulation sleeve 103 is provided on the lower end of the isolation knife gate cavity 102. Except for the outer shell 104 and the cover 105, the remaining parts of the bushing body 1 are integrally cast.

[0027] like Figures 1 to 5As shown, a first shed 1011 is provided on the outer side of the vacuum interrupter cavity 101 to increase the creepage distance.

[0028] like Figures 1 to 5 As shown, second sheds 1021 are provided inside and outside the isolation knife switch cavity 102 to increase the creepage distance.

[0029] like Figure 2 As shown, the upper end of the opening and closing mechanism cavity 106 is provided with a raised portion 1063 with a screw hole on the open side, and the lower end is provided with a connecting plate 1064 with screw holes. The upper end of the outer shell 104 is fixedly connected to the side of the raised portion 1063 by bolts, and the lower end is fixedly connected to the connecting plate 1064 by bolts.

[0030] like Figures 3-4 As shown, a hinged seat is provided inside the lower end of the isolation knife switch cavity 102, a lower terminal 7 is provided inside the lower terminal insulating sleeve 103 outside the lower end of the isolation knife switch cavity 102, and the lower terminal 7 is connected to the hinged seat through a line, and the lower end of the isolation knife switch 3 is hinged on the hinged seat.

[0031] like Figures 1 to 5 As shown, a current transformer 5 is provided in the current transformer cavity 1062, an upper terminal 6 is provided in the upper terminal insulating sleeve 1061, and the upper terminal 6 is connected to the current transformer 5, a vacuum arc chamber is provided in the vacuum arc chamber cavity 101, and the vacuum arc chamber includes a moving contact end rod 8 at the upper end and a static contact end rod 9 at the lower end, wherein the current transformer 5 is connected to the moving contact end rod 8 through a line, and when the moving contact end rod 8 is driven by the opening and closing mechanism 2 so that the moving contact at the lower end contacts the static contact at the upper end of the static contact end rod 9, and at the same time the isolating knife switch 3 is lifted and its upper end is connected to the lower end of the static contact end rod 9, the entire device is electrically connected, and the electrical connection sequence of the utility model is: upper terminal 6-current transformer 5-vacuum arc chamber-isolating knife switch 3-hinge seat-lower terminal 7.

[0032] In this embodiment, Figure 5 As shown, an elastic clamp 10 is provided at the lower end of the static contact end rod 9, and the distance between the two elastic clamps 10 is smaller than the thickness of the blade of the isolation knife switch 3, so that when the isolation knife switch 3 is lifted, its upper end can be clamped and fixed by the two elastic clamps 10. In addition, a corresponding self-locking structure can be provided on the isolation knife switch 3 as needed. This is a well-known technology in the field. For example, the detachable line isolation knife switch in the authorized patent CN205028833U can be adopted.

[0033] like Figure 3As shown, an isolation knife gate insulating shield 301 is provided on the outside of the isolation knife gate 3, and a pull ring 302 is provided on the outside of the isolation knife gate insulating shield 301. When the isolation knife gate 3 is lifted, the isolation knife gate cavity 102 and the isolation knife gate insulating shield 301 form a relatively complete insulating protection cavity to achieve insulation protection for the isolation knife gate 3. In addition, the operator can pull the pull ring 302 through the insulating rod to drive the isolation knife gate 3 to lift or fall.

[0034] The vacuum interrupter, the opening and closing mechanism 2 and the current transformer 1062 are all well-known technologies in the field. For example, the vacuum interrupter and the opening and closing mechanism in the authorized patent CN216250531U and the current transformer in the authorized patent CN205016842U can be used, or other suitable commercially available products can be used.

[0035] The working principle of the utility model is:

[0036] When the utility model is used, Figures 3-4 As shown, the current transformer 5 is integrally cast and arranged in the current transformer cavity 1062, the opening and closing mechanism 2 is integrated in the opening and closing mechanism cavity 106, and the opening and closing mechanism 2 can be installed and maintained by opening the outer shell 104, the vacuum interrupter is arranged in the vacuum interrupter cavity 101, the lower end of the isolation knife switch 3 is hinged to the hinge seat arranged at the lower end of the isolation knife switch cavity 102, and the upper end is matched with the vacuum interrupter. Figure 3 As shown, the utility model can also be provided with a control module 4 outside the outer shell 014 to realize the control of various mechanisms. The utility model can integrate the above-mentioned various mechanisms into the sleeve body 1, thereby ensuring that the overall structure of the product is compact, the appearance is beautiful, and it is easy to use.

[0037] like Figures 3 to 5 As shown, the utility model is an insulating sleeve designed for a new type of outdoor pole switch structure, wherein the opening and closing mechanism 2 is used to control the opening and closing of the vacuum interrupter, wherein the vacuum interrupter is provided with a moving contact and a stationary contact, and the lower end of the opening and closing mechanism 2 is connected to the moving contact end rod 8, and the lower end of the stationary contact end rod 9 is provided with an elastic clamping plate 10. When the moving contact and the stationary contact in the vacuum interrupter are in contact, and the upper end of the isolating knife switch 3 is clamped in the elastic clamping plate 10 at the lower end of the stationary contact end rod 9, the entire device is electrically connected, and the electrical connection sequence is: upper wiring terminal 6-current transformer 5-vacuum interrupter-isolating knife switch 3-hinged seat-lower wiring terminal 7. When the opening and closing mechanism 2 drives the moving contact to rise and separate from the stationary contact, the vacuum interrupter is opened and the electrical connection of the entire device is disconnected, or the operator can pull the pull ring 302 on the outside of the insulating shield 301 of the isolating knife switch through the insulating pull rod to pull the isolating knife switch 3 down and flip it out of the vacuum interrupter, which can also disconnect the electrical connection of the entire device.

Claims

1. An insulating bushing for an outdoor pole switch, characterized in that: The invention comprises a bushing body (1), wherein the bushing body (1) comprises a switch-on / off mechanism cavity (106), a vacuum arc extinguishing chamber cavity (101) and an isolating knife switch cavity (102) which are arranged in sequence from top to bottom, wherein a detachable outer shell (104) is provided on one side of the switch-on / off mechanism cavity (106), and a current transformer cavity (1062) is provided on the other side, and an upper wiring terminal insulating sleeve (1061) is provided on the outer side of the current transformer cavity (1062), a detachable cover (105) is provided on the upper end of the switch-on / off mechanism cavity (106), an opening for the isolating knife switch (3) to swing in and out is formed on one side of the isolating knife switch cavity (102), and a lower wiring terminal insulating sleeve (103) is provided on the lower end of the isolating knife switch cavity (102).

2. The outdoor pole switch insulating sleeve according to claim 1, characterized in that: A first shed (1011) is provided outside the vacuum interrupter cavity (101).

3. The insulating bushing for outdoor pole switch according to claim 1, characterized in that: Second umbrella skirts (1021) are provided inside and outside the isolation knife switch cavity (102).

4. The insulating bushing for outdoor pole switch according to claim 1, characterized in that: The upper end of the opening and closing mechanism cavity (106) is provided with a raised portion (1063) with a screw hole on the open side, and the lower end is provided with a connecting plate (1064) with a screw hole. The upper end of the outer shell (104) is fixedly connected to the side of the raised portion (1063) by bolts, and the lower end is fixedly connected to the connecting plate (1064) by bolts.

5. The insulating bushing for outdoor pole switch according to claim 1, characterized in that: A hinge seat is provided inside the lower end of the isolation knife switch cavity (102); a lower wiring terminal (7) is provided inside the lower wiring terminal insulating sleeve (103) outside the lower end of the isolation knife switch cavity (102); and the lower wiring terminal (7) is connected to the hinge seat via a circuit; the lower end of the isolation knife switch (3) is hinged on the hinge seat.

6. The insulating bushing for outdoor pole switch according to claim 5, characterized in that: An isolation knife switch insulating shield (301) is provided on the outside of the isolation knife switch (3), and a pull ring (302) is provided on the outside of the isolation knife switch insulating shield (301).

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