Insulated contact box and air-insulated switchgear

Abstract

The utility model provides an insulation contact box and air insulation switch equipment, the insulation contact box comprises a positioning plate (1) and a box body corresponding to each phase, each box body and the positioning plate (1) are integrally formed, each box body comprises a cylinder body (2), the cylinder body is vertically connected to one side of the positioning plate (1), and the positioning plate (1) is arranged on the cylinder body (2). The radial section of the cylinder body (2) is circular, each box body further comprises an arc-shaped fixing part (3), the arc-shaped fixing part (3) is fixed on the side wall of the cylinder body (2) and located at one end, far away from the positioning plate (1), of the cylinder body (2), and the arc-shaped fixing part (3) extends in the direction perpendicular to the axis (21) of the cylinder body (2) and is used for fixing the cylinder body (2). A tubular bus (91) can be attached to the arc-shaped fixing part (3) and can be fixed to the arc-shaped fixing part (3).

Description

Technical Field

[0001] This utility model relates to the field of power equipment, and in particular to an insulating contact box and an air-insulated switchgear. Background Technology

[0002] Switchgear is a crucial component of power systems. The main circuit conductive parts within switchgear are particularly critical. In existing technology, these main circuit conductive parts consist of multiple components, such as a stationary contact for each phase. To prevent discharge between the stationary contacts of adjacent phases, an insulated contact box is used to enclose and support each stationary contact, which is then used to connect to the moving contact. Furthermore, this insulated contact box connects to the upper and lower branch busbars on the main circuit and serves as a vital insulating support throughout the busbar compartment, the handcart compartment, and the cable compartment.

[0003] The moving contact connects to the stationary contact by sliding closer to it or away from it by sliding further away. This places high demands on the installation of the stationary contact, and it is important to avoid situations where the stationary contact and the moving contact cannot make contact due to deviations in the position of the stationary contact caused by installation errors. Utility Model Content

[0004] In view of this, the present invention proposes an insulating contact box, comprising a positioning plate and a box body corresponding to each phase, each box body being integrally formed with the positioning plate, each box body comprising a cylindrical body with a circular radial cross-section, which is perpendicularly connected to one side of the positioning plate, and each box body further comprising:

[0005] An arc-shaped fixing part is fixed to the side wall of the cylinder and located at the end of the cylinder away from the positioning plate. The arc-shaped fixing part extends along a direction perpendicular to the axis of the cylinder. A tubular generatrix can abut against the arc-shaped fixing part and can be fixed to the arc-shaped fixing part.

[0006] By setting an arc-shaped fixing part on the insulating contact box, the tubular busbar can be placed against the arc-shaped fixing part to achieve precise positioning, thus minimizing errors caused by installation.

[0007] According to the insulating contact box described above, optionally, the tubular busbar is fixed to the arc-shaped fixing part by: the arc-shaped fixing part having a fixing hole, and a fixing member being able to pass through the fixing hole and the tubular busbar to fix the tubular busbar to the arc-shaped fixing part. This fixing method is easy to assemble, has low cost, and is relatively secure.

[0008] Optionally, the cross-section of the arc-shaped surface of the arc-shaped fixing part is semi-circular, according to the insulating contact box described above. This results in a larger contact area and facilitates installation.

[0009] Optionally, according to the insulating contact box described above, both sides of the arc-shaped fixing part have extending edges that extend in the opposite direction to the positioning plate, and the extending edges are tangents to the circle containing the cross-section of the arc-shaped surface of the arc-shaped fixing part. These extending edges can increase the creepage distance.

[0010] Optionally, each housing further includes a first reinforcing rib disposed on the side of the arc-shaped fixing portion facing the positioning plate, wherein the first reinforcing rib connects the arc-shaped fixing portion and the cylindrical body. This first reinforcing rib provides a certain supporting force to the arc-shaped fixing portion.

[0011] Optionally, each housing of the insulating contact box described above may further include an annular body fixed to the inner wall of the cylindrical body, through which the tubular busbar can pass. This annular body increases the creepage distance and also serves a positioning function to some extent.

[0012] Optionally, each housing further includes several second reinforcing ribs disposed on the outer side of the cylinder, extending along the axial direction of the cylinder, with one end of each rib fixed to the positioning plate. These second reinforcing ribs, in addition to increasing strength, also increase the creepage distance, thereby improving the insulation performance of the insulating contact box.

[0013] Optionally, the insulating contact box described above may also include:

[0014] Several annular spokes, the annular spokes being located on the side of the positioning plate away from the cylinder, and the annular spokes being coaxial with the cylinder; and / or

[0015] Several radial spokes are located on the side of the positioning plate away from the cylinder, and the radial spokes are distributed in a divergent manner around the cylinder.

[0016] This increases the overall strength of the insulated contact box.

[0017] This utility model also includes an air-insulated switchgear, comprising an insulating contact box and a tubular busbar as described in any of the preceding claims, wherein the tubular busbar is integrally formed with the stationary contact. Attached Figure Description

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the above and other features and advantages of the present invention, in which:

[0019] Figure 1 This is a structural schematic diagram of the insulating contact box according to this utility model from one angle.

[0020] Figure 2 This is a cross-sectional structural diagram of a tubular busbar fixed to an insulated contact box.

[0021] Figure 3 This is a structural schematic diagram of the insulating contact box according to this utility model from another angle.

[0022] Figure 4 This is a schematic diagram of a tubular busbar fixed to an insulating contact box.

[0023] Figure 5 This is a flowchart illustrating the assembly method of the insulating contact box according to the present invention.

[0024] The reference numerals in the attached figures are as follows:

[0025] 1-Positioning plate

[0026] 11-Mounting Holes

[0027] 2-Cylinder

[0028] 21-axis

[0029] 3-Arc-shaped fixing part

[0030] 31-Curved Surface

[0031] 32-Fixing Hole

[0032] 33-Factor

[0033] 4-Extended edge

[0034] 5-First reinforcing rib

[0035] 6-Ring

[0036] 7-Second reinforcing rib

[0037] 81-Ring spokes

[0038] 82-Radial spokes

[0039] 91-Tube busbar

[0040] 911 - Flattened part

[0041] 912-Through Hole

[0042] 92-Stationary Contact Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the following embodiments are provided to further illustrate this utility model in detail. The nouns and pronouns referring to "person" in this patent application are not limited to specific genders.

[0044] like Figures 1 to 4As shown, the insulating contact box includes a positioning plate 1 and several boxes, each of which is integrally formed with the positioning plate 1 and each box corresponds to one phase. Figures 1 to 4 The diagram shows 3 phases, therefore there are 3 corresponding boxes, arranged in a straight line. If each phase corresponds to two boxes, the two boxes can be arranged in two rows, one above the other. Specifically, this branch busbar can be a tubular busbar. For tubular branch busbars, it is necessary to consider how to fix the branch busbar to the insulated contact box.

[0045] like Figure 1 The diagram shown is a structural schematic of the insulating contact box according to this utility model. Figure 2 The image shown is a cross-sectional schematic diagram of a tubular busbar installed to an insulated contact box. Figure 3 The diagram shown is a structural schematic of the positioning plate of the insulating contact box on the side away from the box body. Figure 4 The diagram shown is a structural schematic of a tubular busbar installed at one angle to an insulating contact box.

[0046] Each box includes a cylindrical body 2, which is vertically connected to one side of the positioning plate 1. Each box also includes an arc-shaped fixing part 3, which is fixed to the side wall of the cylindrical body 2 and located at the end of the cylindrical body 2 away from the positioning plate 1. The arc-shaped fixing part 3 extends along a direction perpendicular to the axis 21 of the cylindrical body 2. A tubular generatrix 91 can abut against and be fixed to the arc-shaped fixing part 3. As an example, the radial cross-section of the cylindrical body 2 is circular, that is, the cylindrical body 2 is a circular cylinder. Figure 2 The axis 21 of the cylinder 2 is shown.

[0047] The arc-shaped fixing part 3 has an arc-shaped surface 31, and the tubular busbar 91 can abut against this arc-shaped surface 31. That is, the arc-shaped surface 31 can wrap around a part of the tubular busbar 91, which not only achieves positioning but also increases the contact surface to restrict the degree of freedom of the tubular busbar 91 in various directions during installation, thus facilitating support. Next, the tubular busbar 91 is fixed to the arc-shaped fixing part 3, which completes the installation of the tubular busbar 91, making it quite convenient.

[0048] Here, axis 21 is also perpendicular to positioning plate 1.

[0049] There are many ways to fix the tubular busbar 91 to the arc-shaped fixing part 3. As an example, the arc-shaped fixing part 3 has fixing holes 32. A fastener 33 can pass through the fixing holes 32 and the tubular busbar 91 to fix the tubular busbar 91 to the arc-shaped fixing part 3. The fastener 33 can be a bolt or a rivet. The tubular busbar 91 also has corresponding assembly holes, allowing the fastener 33 to pass through the assembly holes of the tubular busbar 91 and the fixing holes 32 of the arc-shaped fixing part 3, thereby achieving fixation between the two. This fixing method is not only simple but also provides a certain degree of limiting effect. The number of fixing holes 32 can be set according to actual needs. Figure 1 and Figure 2 The diagram shows an arc-shaped fixing part 3 with two fixing holes 32 and a tubular busbar 91 with two assembly holes. As an example, the fixing holes 32 can be formed using a hot-melt drilling process, which is less costly.

[0050] As an example, the tubular busbar 91 is integrally formed with the stationary contact 92, which is located inside the cylinder 2. The stationary contact 92 is used to connect with a moving contact (not shown in the figure), such as a quincunx contact. The end of the tubular busbar 91 away from the stationary contact 92 is flat and is used to connect with a rectangular busbar. The flat portion 911 has a through hole 912, and the rectangular busbar also has a through hole. Bolts or other fasteners can be used to connect the flat portion 911 to the rectangular busbar, thus fixing the tubular busbar 91 to the rectangular busbar.

[0051] In this utility model, by setting an arc-shaped fixing part 3 on the insulating contact box, the tubular busbar 91 can be attached to the arc-shaped fixing part 3 to achieve precise positioning, thus minimizing errors caused by installation.

[0052] Optionally, the cross-section of the arc-shaped surface 31 of the arc-shaped fixing part 3 is semi-circular, that is, half of the tubular busbar 91 can be positioned against the arc-shaped fixing surface, and its contact area is large, which facilitates installation.

[0053] Optionally, both sides of the arc-shaped fixing part 3 have extending edges 4, which extend in the opposite direction to the positioning plate 1. More specifically, the extending edges 4 are tangents to the circle containing the cross-section of the arc-shaped surface 31 of the arc-shaped fixing part 3. Assuming that for... Figure 1 The arc-shaped fixing part 3 and the extending edge 4 are cut in cross-section. The cross-section of the arc-shaped fixing part 3 is a part of a circle, such as a semicircle. The straight line where the extending edge 4 is located is the tangent of the semicircle. The presence of the extending edge 4 can increase the creepage distance. In addition, the extending edge 4 has a small distance from the tubular busbar 91. This distance is, for example, the thickness of the end of the arc-shaped surface 31 of the arc-shaped fixing part 3.

[0054] Optionally, each box also includes a first reinforcing rib 5, which is disposed on the side of the arc-shaped fixing part 3 facing the positioning plate 1, and the first reinforcing rib 5 is connected to the arc-shaped fixing part 3 and the cylinder 2. Figure 1 The diagram shows that each arc-shaped fixing part 3 corresponds to two first reinforcing ribs 5, which are distributed at both ends of the side of the arc-shaped fixing part 3 facing the positioning plate 1. The first reinforcing ribs 5 are used to increase the strength of the arc-shaped fixing part 3. When the tubular busbar 91 is installed, the first reinforcing ribs 5 can provide a certain supporting force to the arc-shaped fixing part 3. The first reinforcing ribs 5 are triangular in shape.

[0055] Optionally, each housing also includes an annular body 6, which is fixed to the inner wall of the cylindrical body 2, through which the tubular busbar 91 can pass. The annular body 6 can increase the creepage distance and also plays a certain role in positioning.

[0056] Optionally, each housing also includes several second reinforcing ribs 7, which are disposed on the outer side of the cylinder 2. The second reinforcing ribs 7 extend along the axis 21 of the cylinder 2, and one end of the second reinforcing rib 7 is fixed to the positioning plate 1. The second reinforcing rib 7 is strip-shaped. The number of the second reinforcing ribs 7 can be set according to actual needs. Figure 1 The illustration shows a case where each housing has three second reinforcing ribs 7, which are evenly distributed around the axis 21 of the cylinder 2. These second reinforcing ribs 7 not only increase strength but also increase creepage distance, thus improving the insulation performance of the insulated contact box.

[0057] Optionally, the insulating contact box further includes several annular spokes 81, which are located on the side of the positioning plate 1 away from the cylinder 2, and are coaxial with the cylinder 2. Figure 3 and Figure 4 As shown, each cylinder 2 has three annular spokes 81. One annular spoke 81 is located at the bottom edge of the cylinder 2, and the other two annular spokes 81 are located on the outer periphery of the bottom of the cylinder 2. That is, the annular spoke 81 with a larger inner diameter is located outside the annular spoke 81 with a smaller inner diameter. The number of annular spokes 81 can be set according to actual needs, which will not be elaborated here. These annular spokes 81 can increase the overall strength of the insulating contact box. Figure 3 and Figure 4 The three annular spokes 81 shown can be concentric.

[0058] Optionally, the insulating contact box also includes several radial spokes 82, which are located on the side of the positioning plate 1 away from the cylinder 2, and are distributed radially around the cylinder 2. That is, the extension lines of the radial spokes 82 corresponding to the same cylinder 2 can converge at the center of the cylinder 2. The radial spokes 82 can increase the overall strength of the insulating contact box.

[0059] Optionally, all the components of the insulating contact box described above can be integrally molded. As an example, the entire insulating contact box is made of SMC (Sheet Molding Compound) material. This material has excellent electrical insulation properties, is environmentally friendly and non-toxic, and is suitable for integral molding extrusion processes. The positioning plate 1 is provided with mounting holes 11, through which the insulating contact box can be fixed integrally to the switchgear frame, thus reducing the number of mounting parts and making installation extremely convenient.

[0060] To address the inconvenience of connecting the branch busbar and the stationary contact, the branch busbar and the stationary contact can be made into a single integrated structure. As an example, the stationary contact can also be tubular, such as... Figure 2 As shown, the part of the integrated structure inserted into the front end of the housing is the stationary contact. Both the branch busbar and the stationary contact are tubular for easy processing. Of course, the stationary contact can also take other forms, which will not be elaborated here. For ease of description, the structure after integrating the tubular branch busbar and the tubular stationary contact is called a "tubular integrated structure".

[0061] This utility model also includes an air-insulated switchgear, which includes an insulating contact box and a tubular busbar in any of the foregoing embodiments, wherein the tubular busbar is integrally formed with the stationary contact.

[0062] The insulating contact box includes a positioning plate box, one box corresponding to each phase. Each box is integrally formed with the positioning plate. Each box includes a cylindrical body 2, which is vertically connected to one side of the positioning plate. Each box also includes the aforementioned arc-shaped fixing part 3, which is fixed to the side wall of the cylindrical body 2 and located at the end of the cylindrical body 2 away from the positioning plate 1. The arc-shaped fixing part 3 extends along a direction perpendicular to the axis 21 of the cylindrical body 2. The arc-shaped fixing part 3 has fixing holes, and the tubular busbar has assembly holes. The assembly method of this insulating contact box is described in detail below. Figure 5 The diagram shown is a flowchart illustrating the assembly method of the insulating contact box according to this invention. The method can be performed by a robot, or each step can be completed by a different mechanical structure.

[0063] Step 501: Place the side of the tubular busbar with the mounting hole against the arc-shaped fixing part.

[0064] More specifically, the side of the tubular busbar with the mounting hole rests against the arc-shaped surface 31 of the arc-shaped fixing part. As an example, for an integral tubular structure, when the tubular busbar 91 is rested against the arc-shaped fixing part 3, the stationary contact integral with the tubular busbar 91 also extends into the interior of the cylinder 2, such as... Figure 2As shown, the tubular busbar 91 and the stationary contact 92 are integrated into one piece, without any transition parts, resulting in lower cost, energy saving and emission reduction, and higher installation efficiency.

[0065] Step 502: Align the fixing holes with the assembly holes one by one.

[0066] As an example, after the side of the tubular busbar 91 with the assembly hole is placed against the arc-shaped fixing part 3, the tubular busbar 91 can be moved up and down so that the assembly hole and the fixing hole 32 are aligned one by one. Figure 2 As shown, the tubular busbar 91 has two assembly holes, and the arc-shaped fixing part 3 has two fixing holes 32, such that the upper assembly hole aligns with the upper fixing hole 32, and the lower assembly hole aligns with the lower fixing hole 32.

[0067] Step 503: Use fasteners to pass through a set of corresponding fixing holes and assembly holes to fix the tubular busbar to the arc-shaped fixing part.

[0068] The fastener can be a bolt. One fastener corresponds to one set of fixing holes 32 and assembly holes. Two fasteners correspond to two sets of fixing holes 32 and assembly holes. In this way, the fastener can fix the tubular busbar 91 to the arc-shaped fixing part 3.

[0069] It should be noted that steps 501 and 502 can be performed simultaneously, that is, while the tubular busbar is attached to the arc-shaped fixing part, its position is adjusted so that the fixing hole and the assembly hole correspond one by one.

[0070] Optionally, after step 503, the method further includes connecting the end of the tubular busbar away from the arc-shaped fixing part to a rectangular busbar. This rectangular busbar is equivalent to a main busbar. The end of the tubular busbar away from the arc-shaped fixing part is flat, and this flat portion has through holes. The rectangular busbar also has through holes. Bolts or other fasteners can be used to connect the flat portion 911 to the rectangular busbar, thus fixing the tubular busbar 91 to the rectangular busbar. Setting the end of the tubular busbar away from the arc-shaped fixing part to be flat facilitates connection to the rectangular busbar.

[0071] This assembly method offers high installation efficiency and makes it easier to ensure installation accuracy, thus greatly improving operational reliability.

[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An insulating contact box, comprising a positioning plate (1) and a box body corresponding to each phase, each box body being integrally formed with the positioning plate (1), each box body comprising a cylindrical body (2) perpendicularly connected to one side of the positioning plate (1), the radial cross-section of the cylindrical body (2) being circular, characterized in that, Each box also includes: An arc-shaped fixing part (3) is fixed to the side wall of the cylinder (2) and located at the end of the cylinder (2) away from the positioning plate (1). The arc-shaped fixing part (3) extends along the axis (21) perpendicular to the cylinder (2). A tubular busbar (91) can abut against the arc-shaped fixing part (3) and can be fixed to the arc-shaped fixing part (3).

2. The insulating contact box according to claim 1, characterized in that, The tubular busbar (91) is fixed to the arc-shaped fixing part (3) in the following ways: The arc-shaped fixing part (3) has a fixing hole (32), and the fixing member (33) can be inserted through the fixing hole (32) and the tubular busbar (91) to fix the tubular busbar (91) to the arc-shaped fixing part (3).

3. The insulating contact box according to claim 1, characterized in that, The cross-section of the arc-shaped surface (31) of the arc-shaped fixing part (3) is a semicircle.

4. The insulating contact box according to claim 3, characterized in that, Both sides of the arc-shaped fixing part (3) have extension edges (4), which extend in the opposite direction to the positioning plate (1). The extension edges (4) are the tangents to the circle of the arc surface (31) of the arc-shaped fixing part (3).

5. The insulating contact box according to claim 1, characterized in that, Each box also includes: The first reinforcing rib (5) is disposed on the side of the arc-shaped fixing part (3) facing the positioning plate (1), and the first reinforcing rib (5) is connected to the arc-shaped fixing part (3) and the cylinder (2).

6. The insulating contact box according to claim 1, characterized in that, Each box also includes: The annular body (6) is fixed to the inner wall of the cylinder (2), and the tubular busbar (91) can pass through the annular body (6).

7. The insulating contact box according to claim 1, characterized in that, Each box also includes: Several second reinforcing ribs (7) are provided on the outside of the cylinder (2). The second reinforcing ribs (7) extend along the axis (21) of the cylinder (2). One end of the second reinforcing ribs (7) is fixed to the positioning plate (1).

8. The insulating contact box according to any one of claims 1-7, characterized in that, Also includes: Several annular spokes (81) are located on the side of the positioning plate (1) away from the cylinder (2), and the annular spokes (81) are coaxial with the cylinder (2); and / or Several radial spokes (82) are located on the side of the positioning plate (1) away from the cylinder (2), and the radial spokes (82) are distributed in a divergent manner around the cylinder (2).

9. An air-insulated switchgear, characterized in that, It includes the insulating contact box and tubular busbar as described in any one of claims 1-8, wherein the tubular busbar is integrally formed with the stationary contact.

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