Insulation contact box, switch device and assembling method

Abstract

The invention provides an insulation contact box, a switch device and an assembling method, 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) which is vertically connected to one side of the positioning plate (1), each box body further comprises an arc-shaped fixing part (3), and the arc-shaped fixing part (3) is used for fixing the arc-shaped fixing part (3). The arc-shaped fixing part (3) is fixed to the side wall of the barrel (2) and located at the end, away from the positioning plate (1), of the barrel (2), the arc-shaped fixing part (3) extends in the direction perpendicular to the axis (21) of the barrel (2), and 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] The invention relates to the field of electric power equipment, in particular to an insulating contact box, a switch device and an assembling method. Background Art

[0002] Switchgear is an important part of the power system. The main circuit conductive parts in the switchgear are also a very important part. In the prior art, the main circuit conductive parts are composed of multiple parts, such as a static contact corresponding to each phase. In order to prevent discharge between the static contacts of two adjacent phases, an insulating contact box is required to cover each static contact separately and support the static contact, which is used to connect with the moving contact. In addition, the insulating contact box also connects the upper and lower branch busbars on the main circuit, and is an important insulating support that runs through the busbar room, trolley room and cable room.

[0003] The moving contact slides closer to the stationary contact to connect with the stationary contact or moves away from the stationary contact to disconnect with the stationary contact. This places high demands on the installation of the stationary contact, and tries to avoid the situation where the stationary contact and the moving contact cannot contact due to the deviation of the position of the stationary contact due to installation errors. Summary of the invention

[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 is integrally formed with the positioning plate, each box body comprises a cylinder body vertically connected to one side of the positioning plate, and each box body further comprises:

[0005] An arc-shaped fixing portion is fixed on the side wall of the cylinder and is located at one end of the cylinder away from the positioning plate. The arc-shaped fixing portion extends in a direction perpendicular to the axis of the cylinder. A tubular busbar can be abutted against and fixed to the arc-shaped fixing portion.

[0006] By arranging an arc-shaped fixing portion on the insulating contact box, the tubular busbar can be abutted against the arc-shaped fixing portion to achieve precise positioning, thus avoiding errors caused by installation as much as possible.

[0007] According to the insulating contact box as described above, optionally, the method of fixing the tubular busbar to the arc-shaped fixing portion includes: the arc-shaped fixing portion has a fixing hole, and a fixing member can be inserted through the fixing hole and the tubular busbar to fix the tubular busbar to the arc-shaped fixing portion. Such a fixing method is easy to assemble, has low cost, and is relatively strong.

[0008] According to the insulating contact box as described above, optionally, the cross section of the arc-shaped surface of the arc-shaped fixing portion is semicircular, so that the contact area is larger and the installation is convenient.

[0009] According to the insulating contact box as described above, optionally, both sides of the arc-shaped fixing portion have extended edges, the extended edges extend in a direction opposite to the positioning plate, and the extended edges are tangents of a circle where the cross section of the arc-shaped surface of the arc-shaped fixing portion lies. The extended edges can increase the creepage distance.

[0010] According to the insulating contact box as described above, optionally, each box body further includes: a first reinforcing rib, which is arranged on the side of the arc-shaped fixing portion facing the positioning plate, and the first reinforcing rib is connected to the arc-shaped fixing portion and the cylinder. The first reinforcing rib can give the arc-shaped fixing portion a certain supporting force.

[0011] According to the insulating contact box as described above, optionally, each box body further comprises: an annular body fixed on the inner side wall of the cylinder, and the tubular busbar can be passed through the annular body. The annular body can increase the creepage distance and play a positioning role to a certain extent.

[0012] According to the insulating contact box as described above, optionally, each box body further includes: a plurality of second reinforcing ribs, which are arranged on the outer side of the cylinder, the second reinforcing ribs extend along the axial direction of the cylinder, and one end of the second reinforcing ribs is fixed to the positioning plate. In addition to increasing the strength, the second reinforcing ribs can also increase the creepage distance, thereby improving the insulation performance of the insulating contact box.

[0013] According to the insulating contact box as described above, optionally, it further comprises:

[0014] a plurality of annular spokes, wherein the annular spokes are located on a side of the positioning plate away from the cylinder, and the annular spokes are coaxial with the cylinder; and / or

[0015] A plurality of radial spokes are located on a side of the positioning plate away from the cylinder, and the radial spokes are distributed divergently around the cylinder.

[0016] In this way, the overall strength of the insulating contact box can be increased.

[0017] The present invention also includes a switch device, comprising the insulating contact box and the tubular busbar as described in any one of the above items, wherein the tubular busbar is integrally formed with the stationary contact.

[0018] The present invention further provides an assembling method of an insulating contact box, wherein the insulating contact box comprises a positioning plate and a box body corresponding to each phase, each box body is integrally formed with the positioning plate, each box body comprises a cylinder body, which is vertically connected to one side of the positioning plate, each box body further comprises an arc-shaped fixing portion, which is fixed to the side wall of the cylinder body and is located at one end of the cylinder body away from the positioning plate, the arc-shaped fixing portion extends in a direction perpendicular to the axis of the cylinder body, the arc-shaped fixing portion has a fixing hole, and the tubular busbar has an assembly hole, and the assembling method comprises:

[0019] Placing a side of the tubular busbar having the mounting hole against the arc-shaped fixing portion;

[0020] Align the fixing holes with the assembly holes one by one;

[0021] A fixing piece is adopted to pass through a group of the fixing holes and the assembling holes corresponding to each other, so that the tubular busbar is fixed to the arc-shaped fixing portion.

[0022] According to the assembly method, the installation efficiency is high, the installation accuracy is easier to ensure, and the operation reliability is greatly improved.

[0023] According to the assembling method as described above, after the tubular busbar is fixed to the arc-shaped fixing portion, the method further comprises: connecting one end of the tubular busbar away from the arc-shaped fixing portion to a rectangular busbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the above and other features and advantages of the present invention will be more apparent to those skilled in the art. In the accompanying drawings:

[0025] Figure 1 It is a structural schematic diagram of an insulating contact box according to the present invention at one angle.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the tubular busbar fixed to the insulating contact box.

[0027] Figure 3 It is a schematic structural diagram of the insulating contact box according to another angle of the present invention.

[0028] Figure 4 It is a schematic diagram of the structure in which the tubular busbar is fixed to the insulating contact box.

[0029] Figure 5 The figure is a schematic flow chart of an assembling method of an insulating contact box according to the present invention.

[0030] The reference numerals are as follows:

[0031] 1- Positioning plate

[0032] 11-Mounting holes

[0033] 2-Cylinder

[0034] 21-Axis

[0035] 3-Arc-shaped fixing part

[0036] 31-Curved surface

[0037] 32-Fixing hole

[0038] 33-Fixer

[0039] 4-Extend Edges

[0040] 5-First reinforcement rib

[0041] 6-Annular body

[0042] 7-Second reinforcement

[0043] 81-Ring Spoke

[0044] 82-Radial spokes

[0045] 91-Tubular busbar

[0046] 911-Flat part

[0047] 912-Through hole

[0048] 92-static contact DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail with reference to the following embodiments. Nouns and pronouns related to people in this patent application are not limited to specific genders.

[0050] like Figures 1 to 4 As shown, the insulating contact box includes a positioning plate 1 and a plurality of box bodies, each of which is integrally formed with the positioning plate 1, and each box body corresponds to one phase. Figures 1 to 4 3 phases are shown in the figure, so there are 3 boxes correspondingly, and the 3 boxes are arranged in a straight line. If there are two boxes corresponding to each phase, the two boxes can be arranged in two rows, one above the other. The branch busbar can be a tubular busbar. For a tubular branch busbar, it is necessary to consider how to fix the branch busbar on the insulating contact box.

[0051] like Figure 1 As shown in FIG. 1 , it is a schematic diagram of the structure of the insulating contact box according to the present invention. Figure 2 The figure shows a cross-sectional view of the tubular busbar being installed in the insulating contact box. Figure 3 As shown in FIG. 1 , it is a schematic diagram of the structure of the positioning plate of the insulating contact box away from the side of the box body. Figure 4The figure shows a schematic diagram of the structure of a tubular busbar installed at an angle to an insulating contact box.

[0052] Each box body includes a cylinder 2, which is vertically connected to one side of the positioning plate 1. Each box body also includes an arc-shaped fixing portion 3, which is fixed to the side wall of the cylinder 2 and is located at one end of the cylinder 2 away from the positioning plate 1. The arc-shaped fixing portion 3 extends in a direction perpendicular to the axis 21 of the cylinder 2, and a tubular busbar 91 can be abutted against the arc-shaped fixing portion 3 and can be fixed to the arc-shaped fixing portion 3. As an exemplary illustration, the radial cross-section of the cylinder 2 here is circular, that is, the cylinder 2 is a circular cylinder. Figure 2 The axis 21 of the cylinder 2 is shown.

[0053] The arc-shaped fixing portion 3 has an arc-shaped surface 31, and the tubular busbar 91 can be abutted against the arc-shaped surface 31, that is, the arc-shaped surface 31 can wrap a part of the tubular busbar 91, which can not only achieve positioning, but also increase the contact surface to limit the degree of freedom of the tubular busbar 91 in various directions during installation, which is beneficial for support. Then, the tubular busbar 91 can be fixed on the arc-shaped fixing portion 3 to achieve the installation of the tubular busbar 91, which is more convenient.

[0054] Here, the axis 21 is likewise perpendicular to the positioning plate 1 .

[0055] There are many ways to fix the tubular busbar 91 to the arc-shaped fixing portion 3. As an exemplary illustration, the arc-shaped fixing portion 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 portion 3. The fixing member 33 here can be a bolt or a rivet, and the tubular busbar 91 also has a corresponding assembly hole, so that the fixing member 33 can be inserted through the assembly hole of the tubular busbar 91 and the fixing hole 32 of the arc-shaped fixing portion 3, thereby achieving fixation between the two. This fixing method is not only simple, but also can play a certain limiting role. The number of fixing holes 32 can be set according to actual needs, Figure 1 and Figure 2 3 shows the case where the arc-shaped fixing portion 3 has two fixing holes 32 and the tubular busbar 91 has two assembly holes. As an example, the fixing holes 32 here can be formed by hot melt drilling, which is relatively low in cost.

[0056] As an exemplary illustration, the tubular busbar 91 is integrally formed with the static contact 92, the static contact 92 is located inside the cylinder 2, and the static contact 92 is used to connect with the moving contact (not shown in the figure), and the moving contact is, for example, a plum blossom contact. The end of the tubular busbar 91 away from the static contact 92 is flat, and is used to connect with the rectangular busbar. The flat portion 911 has a through hole 912, and the rectangular busbar also has a through hole. Bolts or other fixings can be used to connect the flat portion 911 with the rectangular busbar, and the tubular busbar 91 can be fixedly connected with the rectangular busbar.

[0057] In the present invention, by providing the arc-shaped fixing portion 3 on the insulating contact box, the tubular busbar 91 can be abutted against the arc-shaped fixing portion 3 to achieve precise positioning, thus avoiding errors caused by installation as much as possible.

[0058] Optionally, the cross-section of the arcuate surface 31 of the arcuate fixing portion 3 is semicircular, that is, half of the tubular busbar 91 can be abutted against the arcuate fixing surface for positioning, and its contact area is large, which is convenient for installation.

[0059] Optionally, both sides of the arc-shaped fixing portion 3 have extension edges 4, and the extension edges 4 extend in a direction opposite to the positioning plate 1. More specifically, the extension edges 4 are tangents to the circle where the cross section of the arc-shaped surface 31 of the arc-shaped fixing portion 3 lies. Figure 1 The arc-shaped fixing portion 3 and the extended edge 4 are cut into cross sections. The cross section of the arc-shaped fixing portion 3 is a part of a circle, for example, a semicircle, and the straight line where the extended edge 4 is located is the tangent of the semicircle. The existence of the extended edge 4 can increase the creepage distance. In addition, there is a small distance between the extended edge 4 and the tubular busbar 91, and the distance is, for example, the thickness of the end of the arc-shaped surface 31 of the arc-shaped fixing portion 3.

[0060] Optionally, each box body further includes a first reinforcing rib 5 , which is disposed on a side of the arc-shaped fixing portion 3 facing the positioning plate 1 , and the first reinforcing rib 5 is connected to the arc-shaped fixing portion 3 and the cylinder 2 . Figure 1 It is shown that each arc-shaped fixing portion 3 corresponds to two first reinforcing ribs 5, which are distributed at both ends of the arc-shaped fixing portion 3 facing the positioning plate 1. The first reinforcing ribs 5 are used to increase the strength of the arc-shaped fixing portion 3. When installing the tubular busbar 91, the first reinforcing ribs 5 can provide a certain supporting force to the arc-shaped fixing portion 3. The first reinforcing ribs 5 are triangular.

[0061] Optionally, each box body further includes an annular body 6, which is fixed on the inner wall of the cylinder body 2, and the tubular busbar 91 can be passed through the annular body 6. The annular body 6 can increase the creepage distance and play a positioning role to a certain extent.

[0062] Optionally, each box body further includes a plurality of second reinforcing ribs 7, which are arranged on the outside of the cylinder 2, and the second reinforcing ribs 7 extend along the axis 21 of the cylinder 2, and one end of the second reinforcing ribs 7 is fixed to the positioning plate 1. The second reinforcing ribs 7 are strip-shaped. The number of the second reinforcing ribs 7 can be set according to actual needs. Figure 1 The figure shows that each box body has three second reinforcing ribs 7, which are evenly distributed around the axis 21 of the cylinder body 2. In addition to increasing the strength, the second reinforcing ribs 7 can also increase the creepage distance and improve the insulation performance of the insulating contact box.

[0063] Optionally, the insulating contact box further includes a plurality of annular spokes 81, the annular spokes 81 are located on a side of the positioning plate 1 away from the cylinder 2, and the annular spokes 81 are coaxial with the cylinder 2. Figure 3 and Figure 4 As shown, each cylinder 2 has three annular spokes 81, one of which is located at the edge of the bottom of the cylinder 2, and the other two are located at the 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 the annular spokes 81 can be set according to actual needs, and will not be repeated here. The annular spokes 81 can increase the overall strength of the insulating contact box. Figure 3 and Figure 4 The three annular spokes 81 shown in FIG. 8 may be concentric.

[0064] Optionally, the insulating contact box further includes a plurality of radial spokes 82, which are located on a side of the positioning plate 1 away from the cylinder 2, and the radial spokes 82 are distributed divergently around the cylinder 2. That is, the extension lines of the radial spokes 82 corresponding to the same cylinder 2 can converge to the center of the cylinder 2. The radial spokes 82 can increase the overall strength of the insulating contact box.

[0065] Optionally, all the above-mentioned parts belonging to the insulating contact box can be integrally formed. As an exemplary illustration, the entire insulating contact box is made of SMC (Sheet molding compound) material. This material has good electrical insulation performance, is environmentally friendly and non-toxic, and can be applied to the integral molding extrusion process. The positioning plate 1 is provided with a mounting hole 11, through which the insulating contact box can be fixed as a whole to the frame of the switch cabinet, which can reduce the number of installation parts and make the installation extremely convenient.

[0066] In order to solve the problem of inconvenience in connecting the branch busbar and the static contact, the branch busbar and the static contact can be made into an integrated structure. As an exemplary illustration, the static contact can also be tubular, such as Figure 2As shown, the front end of the integrated structure inserted into the box body is the static contact, and the branch busbar and the static contact are both tubular, which is easy to process. Of course, the static contact can also be in other forms, which will not be described here. For the convenience of description, the structure in which the tubular branch busbar and the tubular static contact are integrated is called a "tubular integrated structure".

[0067] The present invention also includes a switchgear, which includes an insulating contact box and a tubular busbar according to any of the above embodiments, wherein the tubular busbar and the stationary contact are integrally formed. As an exemplary illustration, the switchgear is an air-insulated switchgear.

[0068] The insulating contact box includes a positioning plate box and a box body corresponding to each phase. Each box body is integrally formed with the positioning plate. Each box body includes a cylinder 2, which is vertically connected to one side of the positioning plate. Each box body also includes the aforementioned arc-shaped fixing portion 3, which is fixed on the side wall of the cylinder 2 and is located at the end of the cylinder 2 away from the positioning plate 1. The arc-shaped fixing portion 3 extends in a direction perpendicular to the axis 21 of the cylinder 2. The arc-shaped fixing portion 3 has a fixing hole, and the tubular busbar has an assembly hole. The following is a detailed introduction to the assembly method of the insulating contact box. Figure 5 FIG. 1 is a flow chart of an assembly method of an insulating contact box according to the present invention. The execution subject of the method may be a robot, or each step may be completed by a different mechanical structure.

[0069] Step 501: Place a side of the tubular busbar having the mounting hole against the arc-shaped fixing portion.

[0070] More specifically, the side of the tubular busbar having the mounting hole is against the arc surface 31 of the arc fixing portion. As an exemplary illustration, for the tubular integrated structure, when the tubular busbar 91 is against the arc fixing portion 3, the static contact integrated with the tubular busbar 91 also extends into the interior of the cylinder 2, as shown in FIG. Figure 2 The tubular busbar 91 and the static contact 92 are designed in one piece, without transition parts, with low cost, energy saving and emission reduction effects, and high installation efficiency.

[0071] Step 502, align the fixing holes with the assembly holes one by one.

[0072] As an exemplary illustration, after the side of the tubular busbar 91 having the assembly hole is pressed against the arc-shaped fixing portion 3, the tubular busbar 91 can be moved up and down so that the assembly hole is aligned with the fixing hole 32 one by one. Figure 2 As shown, the tubular busbar 91 has two assembly holes, and the arc-shaped fixing portion 3 has two fixing holes 32, so that the upper assembly hole is aligned with the upper fixing hole 32, and the lower assembly hole is aligned with the lower fixing hole 32.

[0073] Step 503: Use a fixing piece to pass through a set of fixing holes and assembly holes corresponding to each other to fix the tubular busbar to the arc-shaped fixing portion.

[0074] The fixing member can be a bolt. One fixing member corresponds to one set of fixing holes 32 and assembly holes. Two fixing members correspond to two sets of fixing holes 32 and assembly holes. In this way, the fixing member can fix the tubular busbar 91 on the arc-shaped fixing portion 3.

[0075] It should be noted that step 501 and step 502 can be performed simultaneously, that is, the position of the tubular busbar is adjusted while it is abutting against the arc-shaped fixing portion, so that the fixing holes correspond to the assembly holes one by one.

[0076] Optionally, after step 503, it further includes: connecting one end of the tubular busbar away from the arc-shaped fixing portion to a rectangular busbar. The rectangular busbar is equivalent to the main busbar. The end of the tubular busbar away from the arc-shaped fixing portion is flat, and a through hole is provided on the flat portion. The rectangular busbar also has a through hole. Bolts or other fixings can be used to connect the flat portion 911 to the rectangular busbar, and the tubular busbar 91 can be fixedly connected to the rectangular busbar. The end of the tubular busbar away from the household fixing portion is set to be flat, which is convenient for connection with the rectangular busbar.

[0077] According to the assembly method, the installation efficiency is high, the installation accuracy is easier to ensure, and the operation reliability is greatly improved.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

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 cylinder (2) vertically connected to one side of the positioning plate (1), characterized in that: Each box also includes: An arc-shaped fixing portion (3) is fixed on the side wall of the cylinder (2) and is located at an end of the cylinder (2) away from the positioning plate (1). The arc-shaped fixing portion (3) extends in a direction perpendicular to the axis (21) of the cylinder (2). A tubular busbar (91) can be abutted against the arc-shaped fixing portion (3) and can be fixed to the arc-shaped fixing portion (3).

2. The insulating contact box according to claim 1, characterized in that: The method of fixing the tubular busbar (91) to the arc-shaped fixing portion (3) includes: The arc-shaped fixing portion (3) has a fixing hole (32), and a fixing member (33) can be inserted through the fixing hole (32) and the tubular busbar (91) so that the tubular busbar (91) is fixed to the arc-shaped fixing portion (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 portion (3) is a semicircle.

4. The insulating contact box according to claim 3, characterized in that: Both sides of the arc-shaped fixing portion (3) have extension edges (4), and the extension edges (4) extend in a direction opposite to the positioning plate (1). The extension edges (4) are tangents to the circle where the cross section of the arc-shaped surface (31) of the arc-shaped fixing portion (3) lies.

5. The insulating contact box according to claim 1, characterized in that: Each box also includes: A first reinforcing rib (5) is arranged on a side of the arc-shaped fixing portion (3) facing the positioning plate (1), and the first reinforcing rib (5) is connected to the arc-shaped fixing portion (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 on the inner wall of the cylinder (2), and the tubular busbar (91) can be passed through the annular body (6).

7. The insulating contact box according to claim 1, characterized in that: Each box also includes: A plurality of second reinforcing ribs (7) are arranged on the outside of the cylinder (2), the second reinforcing ribs (7) extending along the axis (21) of the cylinder (2), and one end of the second reinforcing rib (7) is fixed to the positioning plate (1).

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

9. A switchgear, characterized in that It comprises the insulating contact box and tubular busbar according to any one of claims 1 to 8, wherein the tubular busbar is integrally formed with the stationary contact.

10. An assembling method of an insulating contact box, the 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 cylinder (2) vertically connected to one side of the positioning plate (1), characterized in that: Each box body further comprises an arc-shaped fixing portion (3), which is fixed on the side wall of the cylinder (2) and is located at an end of the cylinder (2) away from the positioning plate (1), the arc-shaped fixing portion (3) extends in a direction perpendicular to the axis (21) of the cylinder (2), the arc-shaped fixing portion (3) has a fixing hole (32), and the tubular busbar (91) has an assembly hole. The assembly method comprises: Placing a side of the tubular busbar (91) having the mounting hole (32) against the arc-shaped fixing portion (3); Aligning the fixing holes (32) with the assembly holes one by one; A fixing piece is passed through a group of the fixing holes (32) and the assembly holes corresponding to each other, so that the tubular busbar (91) is fixed to the arc-shaped fixing portion (3).

11. The assembly method according to claim 10, characterized in that: After the tubular busbar (91) is fixed to the arc-shaped fixing portion (3), the method further comprises: One end of the tubular busbar (91) away from the arc-shaped fixing portion (3) is connected to a rectangular busbar.

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