Contact box assembly and switchgear

Abstract

The utility model provides touch head box subassembly and switch equipment, touch head box subassembly has one insulating cylindrical box body (1), one static contact (2) can be located in insulating cylindrical box body (1), one tubular busbar (3) is integrally formed with static contact (2), one end of insulating cylindrical box body (1) has first opening (11), the other end of insulating cylindrical box body (1) is provided with first plate body (4), first plate body (4) has second opening (12), tubular busbar (3) can from the second opening (12) of insulating cylindrical box body (1) stretch into insulating cylindrical box body (1), touch head box subassembly still includes fixed subassembly, fixed subassembly can fix tubular busbar (3), fixed subassembly is used for fixing in first plate body (4), and at least one part of fixed subassembly can pass through deformation and hold tubular busbar (3). This structure is favorable to fixed tubular busbar.

Description

Technical Field

[0001] This utility model relates to the field of switchgear, and in particular to a contact box assembly and a 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, the main circuit conductive parts consist of multiple components, such as a stationary contact for each phase and a tubular busbar connected to that stationary contact; the stationary contact and the tubular busbar are integrally formed. 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.

[0003] Therefore, how to fix the tubular busbar has become an urgent problem to be solved. Utility Model Content

[0004] In view of this, the present invention proposes a contact box assembly, which has an insulating cylindrical box body, a stationary contact located within the insulating cylindrical box body, and a tubular busbar integrally formed with the stationary contact. One end of the insulating cylindrical box body has a first opening, and the other end of the insulating cylindrical box body is provided with a first plate-like body, the first plate-like body having a second opening. The tubular busbar can extend into the insulating cylindrical box body through the second opening. The contact box assembly further includes a fixing component, which can fix the tubular busbar. The fixing component is used to fix the tubular busbar to the first plate-like body, and at least a portion of the fixing component can clamp the tubular busbar by deformation. Clamping the tubular busbar by partial deformation of the fixing component, thereby fixing the tubular busbar, is a relatively simple fixing method and is suitable for fixing tubular busbars.

[0005] Optionally, according to the contact box assembly described above, the fixing component includes:

[0006] A first fixing plate, which can be fixed to the first plate-shaped body;

[0007] The split ring-shaped body is located on the side of the first fixing plate facing the first opening. The split ring-shaped body includes two arc-shaped parts that are symmetrical along the axial direction. There is a gap between the edges of the two arc-shaped parts. The tubular busbar can pass through the first fixing plate and the split ring-shaped body.

[0008] A fastener that can be inserted through the two arcuate members to reduce at least a portion of the gap, thereby enabling the two arcuate members to clamp the tubular busbar.

[0009] Such a structure is relatively simple to implement, has low cost, and is easy to assemble.

[0010] According to the contact box assembly described above, optionally, the contact box assembly has at least one of the following structures:

[0011] The first fixing plate and the split annular body are integrally formed;

[0012] The fastener is used to pass through the tubular busbar in the radial direction;

[0013] The fastener is inserted from bottom to top;

[0014] Both of the aforementioned arc-shaped components are attached to the tubular busbar;

[0015] The first fixing plate adopts a split structure;

[0016] The first fixing plate is rabbit head shaped or elliptical.

[0017] Optionally, in the contact box assembly described above, the outer contour of the first fixing plate is arc-shaped. This helps to minimize discharge problems.

[0018] Optionally, according to the contact box assembly described above, the split annular body is located inside the insulating cylindrical box. This allows for a more compact overall structure.

[0019] Optionally, in the contact box assembly described above, at least a portion of the second opening is not obstructed by the fixing component. This allows the second opening to serve a heat dissipation function.

[0020] Optionally, according to the contact box assembly described above, an isolation plate is provided on the outer periphery of the first plate-like body. This can minimize interphase discharge.

[0021] Optionally, the contact box assembly described above may also include:

[0022] A second plate-shaped body, integrally formed with the insulating cylindrical box body and surrounding one side of the first opening, is used to fix the insulating cylindrical box body to a mounting plate. The second plate-shaped body has a first protruding ridge on its first sidewall and a second protruding ridge on its second sidewall. The first protruding ridge can press against the second protruding ridge of an adjacent contact box assembly on one side, and the second protruding ridge of the second plate-shaped body can be pressed against the first protruding ridge of an adjacent contact box assembly on another side. This structure allows any one or more of the three contact box assemblies shown in the figure to be subjected to tensile or compressive forces simultaneously, thereby achieving better structural strength.

[0023] This utility model further provides a switching device, including a contact box assembly as described in any of the preceding claims. Attached Figure Description

[0024] 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:

[0025] Figure 1 This is a schematic diagram of the contact box assembly from one angle according to an embodiment of the present invention.

[0026] Figure 2 for Figure 1 A cross-sectional structural diagram of the contact box assembly.

[0027] Figure 3 for Figure 1 A schematic diagram of the structure of the insulating cylindrical box.

[0028] Figure 4 This is a partial structural diagram of a fixing component according to an embodiment of the present invention.

[0029] Figure 5 This is a partial structural diagram of the fixing component according to another embodiment of the present invention.

[0030] Figure 6 This is a structural schematic diagram of the contact box assembly from another angle, representing one embodiment of the present invention.

[0031] The reference numerals in the attached figures are as follows:

[0032] 1-Insulating cylindrical box

[0033] 11-First Opening

[0034] 12-Second opening

[0035] 13- Umbrella Skirt

[0036] 2-Stationary contact

[0037] 3-Tube busbar

[0038] 4-First plate-shaped body

[0039] 51-First fixing plate

[0040] 52-Splitting Annular Body

[0041] 521-First Arc-shaped component

[0042] 522-Second Arc-shaped component

[0043] 523-Gap

[0044] 524-Plate Section

[0045] 53-Factor

[0046] 6-Separation fence

[0047] 7-Second plate-shaped body

[0048] 71-First Convex Rib

[0049] 72-Second Convex Rib

[0050] 8-Mounting Plate

[0051] 9-bolts Detailed Implementation

[0052] 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.

[0053] This utility model provides a contact box assembly. The handcart-type circuit breaker has three phases, with two contact box assemblies corresponding to each phase, arranged in two rows, one above the other. Each contact box assembly is fixed to a mounting plate, such as... Figure 1 and Figure 2 As shown. From Figure 1 and Figure 2 As can be seen, the contact box assembly is a separate unit, and each contact box assembly needs to be installed and fixed to the same mounting plate 8. This contact box assembly is located in the switchgear.

[0054] The following explanation will take one of the contact box components as an example.

[0055] like Figure 1 , Figure 2 and Figure 6 As shown, the contact box assembly includes an insulating cylindrical box 1, a stationary contact 2 located within the insulating cylindrical box 1, and a tubular busbar 3 integrally formed with the stationary contact 2. One end of the insulating cylindrical box 1 has a first opening 11, and the other end of the insulating cylindrical box 1 is provided with a first plate 4 having a second opening 12. The tubular busbar 3 extends into the insulating cylindrical box 1 from the second opening 12. The insulating cylindrical box 1 can be made of various insulating materials, such as resin. The tubular busbar 3 and the stationary contact 2 are made of materials such as copper or other conductive materials. The moving contact of the trolley circuit breaker can extend into the insulating cylindrical box 1 through the first opening 11 and contact the stationary contact 2 therein. The outer wall of the insulating cylindrical box 1 may have a skirt 13 to increase the creepage distance.

[0056] The contact box assembly also includes a fixing component that can fix the tubular busbar 3. For example, the tubular busbar 3 passes through the fixing component, and is thus fixed by clamping and / or other fixing methods. The fixing component is used to fix to the first plate-like body 4, and at least a portion of the fixing component can clamp the tubular busbar 3 by deformation. For example, the portion of the fixing component near the tubular busbar 3 may apply inward force to clamp the tubular busbar 3. This clamping force can serve as the main force for fixing the tubular busbar 3, ensuring that the tubular busbar 3 can be positioned in all directions. Moreover, the clamping portion can increase the force-bearing area of ​​the tubular busbar 3, thereby better fixing the tubular busbar 3.

[0057] As an example, when the fixing component is not deformed, it can engage with the tubular busbar 3 through the gap 523, allowing the tubular busbar 3 to pass through the fixing component more easily. Then, force is applied to the fixing component to deform it, thereby clamping the tubular busbar 3.

[0058] In this invention, the tubular busbar 3 is clamped by partially deforming the fixing component, thereby fixing the tubular busbar 3. The fixing method is relatively simple and applicable to fixing the tubular busbar 3.

[0059] As an example, such as Figures 1 to 6 As shown, the fixing assembly includes a first fixing plate 51, a split annular body 52, and a fixing member 53. This structure is relatively simple to implement, has low cost, and is easy to assemble. The fixing member 53 can be a bolt 9. The first fixing plate 51 can be fixed to the first plate-shaped body 4, specifically using bolts 9 or other fixing components. Figure 1 The method of fixing with bolt 9 is shown. The split annular body 52 is located on the side of the first fixing plate 51 facing the first opening 11. The split annular body 52 includes two symmetrical arc-shaped parts along the axial direction, referred to hereinafter as the first arc-shaped part 521 and the second arc-shaped part 522 for convenience. A gap 523 exists between the edges of the first arc-shaped part 521 and the second arc-shaped part 522, allowing the tubular generatrix 3 to pass through the first fixing plate 51 and the split annular body 52. ​​The split annular body here can be understood as a double-opening ring, with the two independent components being the first arc-shaped part 521 and the second arc-shaped part 522. Figure 4 and Figure 5 As can be seen, the split annular body 52 can be coaxial with the insulating cylindrical box 1, facilitating installation. The fixing member 53 can pass through the two arc-shaped members to reduce at least a portion of the gap 523, thereby allowing the two arc-shaped members to clamp the tubular busbar 3. From... Figure 4 and Figure 5As can be seen, the split annular body 52 is the deformable part. The fixing member 53 passes through the two first arc-shaped members 521 and the second arc-shaped member 522, and by applying force, the first arc-shaped members 521 and the second arc-shaped member 522 are brought closer to each other, thereby partially reducing the gap 523. The two arc-shaped members can then clamp the tubular busbar 3 passing through it. Figure 1 As shown, the first fixing plate 51 has an opening, and two opposing arc-shaped members also have openings. Both openings partially overlap with the second opening 12. Therefore, the tubular busbar 3 can pass through this fixing assembly and enter the interior of the insulating cylindrical box 1 through the second opening 12. In this way, the fixing member 53 secures the tubular busbar 3 to the split ring body 52, which is fixed to the first fixing plate 51. The first fixing plate 51 is fixed to the first plate body 4. This ensures the position of the tubular busbar 3 is fixed, preventing displacement during operation. Compared to fixing the tubular busbar 3 and the split ring body 52 solely with the fixing member 53, this method can position the tubular busbar 3 in all directions, making the overall performance of the switchgear more reliable.

[0060] As another example, the aforementioned fixing component can be made of either insulating or conductive material. Using an insulating material effectively prevents discharge problems, but the strength of the fixing member 53 is insufficient. If the fixing member 53 is made solely of conductive material, a floating potential problem arises. When using a conductive material, to avoid discharge problems, the surface area of ​​the first fixing plate 51 can be minimized, keeping the entire fixing component away from the lower partition plate. For example... Figure 4 As shown, the first fixing plate 51 can be rabbit-head shaped, with sufficient space for bolts 9, for example, four bolts 9, so that the first fixing plate 51 can be fixed relatively securely. Figure 5 As shown, the first fixing plate 51 can be elliptical, which allows it to be far away from other conductive components in both the vertical and horizontal directions, thus preventing discharge. Furthermore, the first fixing plate 51 can be fixed using two bolts 9, further reducing costs and shortening the assembly process.

[0061] As another example, the outer surface of each arcuate plate of the split annular body 52 has a flat plate portion 524, and a fastener 53 can pass through two flat plate portions 524, such as... Figure 4 and Figure 5 As shown, the flat plate 524 facilitates the tightening and application of force with the fastener 53.

[0062] As another example, the first fixing plate 51 can be as follows: Figure 4 The single board shown can also be as follows: Figure 5The split structure shown. For Figure 5 The split structure shown can be composed of two parts symmetrical along a radial axis, for example... Figure 5 The semi-elliptical shape shown also adopts a split structure for the first fixing plate 51, which facilitates assembly.

[0063] As an example, when the first fixing plate 51 is a single piece, the first fixing plate 51 and the separate annular body 52 are integrally formed, which facilitates processing and eliminates the need for assembly. The first fixing plate 51 and the separate annular body 52 can be formed through a demolding process. The fixing member 53 can be a bolt 9. The tubular busbar 3 has symmetrical through holes. The fixing member 53 passes through an arc-shaped member, two through holes on the tubular busbar 3, and another arc-shaped member in sequence. By applying force, the two arc-shaped members are brought closer together, thereby clamping the tubular busbar 3.

[0064] As an example, the fastener 53 is installed from bottom to top. For instance, the second arc-shaped member 522 is located below the first arc-shaped member 521. The fastener 53 passes through the second arc-shaped member 522 first and then through the first arc-shaped member 521. In this way, the tip of the fastener 53 can be kept away from the partition plate below the contact box assembly, thereby preventing discharge.

[0065] As an example, the outer contour of the first fixing plate 51 is arc-shaped, which can minimize the discharge.

[0066] like Figure 1 and Figure 6 As shown, the split annular body 52 is located inside the insulating cylindrical box 1. The second opening 12 is large enough to accommodate the split annular body 52 extending into the insulating cylindrical box 1 through the second opening 12. This allows for a more compact overall structure.

[0067] As another example, such as Figure 1 As shown, at least part of the second opening 12 is not blocked by the fixing component. In this way, the second opening 12 can play a role in heat dissipation.

[0068] As another illustrative example, such as Figure 3 and Figure 6 As shown, an isolation plate 6 is provided on the outer periphery of the first plate-shaped body 4 to minimize phase-to-phase discharge. The isolation plate 6 can be integrally formed with the first plate-shaped body 4. For example, the insulating cylindrical box 1, the first plate-shaped body 4, the first fixing plate 51, and the isolation plate 6 can all be integrally formed, which is relatively simple in processing and has a low cost.

[0069] As an example, the contact box assembly also includes a second plate-shaped body 7, which is integrally formed with the cylindrical box body and surrounds one side of the second opening 12. The second plate-shaped body 7 is used to fix the cylindrical box body to a mounting plate 8. The first side wall of the second plate-shaped body 7 has a first protruding ridge 71, and the second side wall of the second plate-shaped body 7 has a second protruding ridge 72. The first protruding ridge 71 can press against the second protruding ridge 72 of an adjacent contact box assembly on one side, and the second protruding ridge 72 of the second plate-shaped body 7 can be pressed against the first protruding ridge 71 of an adjacent contact box assembly on the other side. As shown in the figure, stepped structures are provided on both sides of the second plate-shaped body 7, and the stepped structures can match the structures of adjacent second plate-shaped bodies 7, that is, one second plate-shaped body 7 can be pressed against another adjacent second plate-shaped body 7. This structure allows any one or more of the three contact box assemblies shown in the figure to be subjected to tensile or compressive forces simultaneously, thereby obtaining better structural strength.

[0070] The assembly process of the contact box assembly will be illustrated below with a specific example.

[0071] Workers can thread the tubular busbar 3 onto the split ring body 52, and then use the fixing member 53 to fix the tubular busbar 3 to the split ring body 52 in the radial direction. By applying force in the radial direction, the two arc-shaped members deform and clamp the tubular busbar 3, thereby fixing the position of the tubular busbar 3. Then, the tubular busbar 3 is inserted into the insulating cylindrical box 1 through the second opening 12, so that the first fixing plate 51 is abutted against the first plate body 4. At the same time, the split ring body 52 is also located in the insulating cylindrical box 1. Then, the fixing member 53 is used to fix the first fixing plate 51 to the first plate body 4, thereby completing the positioning of the tubular busbar 3.

[0072] This utility model also provides a switchgear, which includes the contact box assembly of any of the foregoing claims. Specifically, the switchgear may be an air-insulated switch cabinet.

[0073] The above are merely preferred embodiments of the present utility model and are 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 shall be included within the protection scope of the present utility model.

Claims

1. A contact box assembly having an insulating cylindrical box (1), a stationary contact (2) being able to be located in the insulating cylindrical box (1), and a tubular busbar (3) integrally formed with the stationary contact (2), one end of the insulating cylindrical box (1) having a first opening (11), and the other end of the insulating cylindrical box (1) being provided with a first plate (4), the first plate (4) having a second opening (12), the tubular busbar (3) being able to extend into the insulating cylindrical box (1) from the second opening (12), the contact box assembly further comprising a fixing component, the fixing component being able to fix the tubular busbar (3), characterized in that, The fixing component is used to fix to the first plate-shaped body (4), and at least a portion of the fixing component can clamp the tubular busbar (3) by deformation.

2. The contact box assembly according to claim 1, characterized in that, The fixing component includes: The first fixing plate (51) can be fixed to the first plate-shaped body (4). The split ring body (52) is located on the side of the first fixing plate (51) facing the first opening (11). The split ring body (52) includes two arc-shaped parts symmetrical in the axial direction, and there is a gap (523) between the edges of the two arc-shaped parts. The tubular busbar (3) can pass through the first fixing plate (51) and the split ring body (52). A fastener (53) is provided through the two arcuate members to reduce at least a portion of the gap (523) so that the two arcuate members can clamp the tubular busbar (3).

3. The contact box assembly according to claim 2, characterized in that, The contact box assembly has at least one of the following structures: The first fixing plate (51) and the split annular body (52) are integrally formed; The fastener (53) is used to pass through the tubular busbar (3) in the radial direction; The fastener (53) is inserted from bottom to top; The first fixing plate (51) adopts a split structure; The first fixing plate (51) is rabbit head shaped or elliptical.

4. The contact box assembly according to claim 2, characterized in that, The outer contour of the first fixing plate (51) is arc-shaped.

5. The contact box assembly according to claim 2, characterized in that, The split annular body (52) is located inside the insulating cylindrical box (1).

6. The contact box assembly according to claim 1, characterized in that, The second opening (12) is at least partially unobstructed by the fixing component.

7. The contact box assembly according to claim 1, characterized in that, An isolation enclosure (6) is provided on the outer periphery of the first plate-shaped body (4).

8. The contact box assembly according to any one of claims 1-7, characterized in that, Also includes: The second plate (7) is integrally formed with the insulating cylindrical box (1) and surrounds one side of the first opening (11). The second plate (7) is used to fix the insulating cylindrical box (1) on a mounting plate (8). The first side wall of the second plate (7) has a first protrusion (71) and the second side wall of the second plate (7) has a second protrusion (72). The first protrusion (71) can press down on the second protrusion (72) of the contact box assembly on one side, and the second protrusion (72) of the second plate (7) can be pressed down by the first protrusion (71) of the contact box assembly on the other side.

9. A switchgear, characterized in that, Includes the contact box assembly according to any one of claims 1-8.

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