Single insulator supporting structure of isolated-phase enclosed bus and novel isolated-phase enclosed bus

Abstract

A single insulator supporting structure for an isolated-phase bus belongs to the technical field of related equipment of a power system, and comprises an insulator base arranged on the outer side surface of a shell; the tail end of the supporting insulator is fixedly arranged relative to the insulator base; the connecting rod is arranged at the head end of the supporting insulator, and the connecting rod is provided with a mounting section; the positioning gasket is arranged on the mounting section in a position-adjustable manner; and the insulator head is adjustably arranged at the head end of the mounting section, the insulator head is used for being arranged in a conductor of the isolated-phase bus, and a mounting gap for mounting the conductor is formed between the positioning gasket and the insulator head. The utility model also provides a novel isolated-phase enclosed bus. According to the novel single-insulator supporting structure provided by the utility model, at each supporting position, the concentricity of the conductor and the shell can be ensured by only one insulator, so that the number of insulators is reduced, the cost is reduced, and the assembly workload is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power system related equipment, and more specifically, particularly relates to a single insulator supporting structure for a phase-isolated enclosed busbar and a novel phase-isolated enclosed busbar. Background Art

[0002] A phase-isolated enclosed busbar refers to a metal-enclosed busbar in which each phase has a separate metal casing and there are gaps between the casings of each phase.

[0003] The isolated phase enclosed busbar needs to use an insulator support structure to ensure the concentricity of the shell and the conductor (to ensure that the circumferential isolation gap between the conductor and the inside of the shell is consistent). The insulator support structure includes supporting insulators, insulator heads, connecting rods, positioning gaskets, insulator base plates and other parts. The insulators are fixed to the base plate by bolts and sealed with sealing rings. Since each phase of the isolated phase enclosed busbar is equipped with no less than three insulator support structures, and each insulator support structure needs to be adjusted to ensure the concentricity of the conductor and the shell, the concentricity adjustment operation of the conductor and the shell becomes very complicated. Utility Model Content

[0004] 1. Technical issues:

[0005] In summary, how to provide a new support structure for assembling the conductor and the shell in a phase-isolated enclosed busbar has become an urgent problem to be solved by those skilled in the art.

[0006] (II) Technical solution:

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a phase-isolated enclosed busbar single insulator support structure. In the utility model, the phase-isolated enclosed busbar single insulator support structure comprises:

[0009] An insulator base (1) used for being fixedly connected to the shell of a phase-isolated enclosed busbar, wherein the insulator base is arranged on the outer surface of the shell and can be fixedly connected relative to the shell;

[0010] A supporting insulator (2), wherein the tail end of the supporting insulator is fixedly arranged relative to the insulator base, and the head end of the supporting insulator passes through the housing;

[0011] A connecting rod (3), the connecting rod being arranged at the head end of the supporting insulator, the connecting rod extending relative to the supporting insulator in the direction of the conductor of the isolated-phase closed busbar to form a mounting section;

[0012] A positioning gasket (4), the position of which is adjustably arranged on the mounting section;

[0013] An insulator head (5) is adjustably arranged at the head end of the installation section, and is used to be arranged inside the conductor of the isolated phase closed busbar. An installation gap for conductor installation is provided between the positioning gasket and the insulator head.

[0014] Preferably, in the isolated-phase enclosed busbar single insulator support structure provided by the utility model, the upper end surface of the insulator head is a first contact surface for contacting the inner side surface of the conductor, and the first contact surface is a smooth curved surface.

[0015] Preferably, in the isolated-phase enclosed busbar single insulator support structure provided by the utility model, a transition head (6) is fixedly arranged on the first contact surface, and the transition head is plugged into the conductor.

[0016] Preferably, in the isolated-phase closed busbar single insulator support structure provided by the utility model, the lower side surface of the positioning gasket is a second contact surface arranged toward the outer side surface of the conductor, and the second contact surface is a smooth curved surface.

[0017] Preferably, in the isolated-phase enclosed busbar single insulator support structure provided by the utility model, an external thread is provided on the outer side of the connecting rod, and the connecting rod is threadably matched with the supporting insulator.

[0018] Preferably, in the isolated-phase enclosed busbar single insulator support structure provided by the utility model, a fastener (7) threadedly matched with the mounting section is provided on the mounting section, and the fastener abuts against the upper side surface of the positioning gasket.

[0019] Preferably, in the isolated-phase enclosed busbar single insulator support structure provided by the utility model, the insulator head is threadedly matched with the connecting rod.

[0020] Preferably, in the isolated-phase closed busbar single insulator support structure provided by the utility model, the insulator base is an annular structure, the lower side surface of the insulator base is a third contact surface for contacting the outer side surface of the shell, and the third contact surface is a smooth curved surface.

[0021] Preferably, in the isolated-phase enclosed busbar single insulator support structure provided by the utility model, an insulator base plate (8) is provided on the upper side of the insulator base, the supporting insulator is fixedly connected to the insulator base plate, and a sealing ring (9) is provided between the insulator base plate and the insulator base.

[0022] The utility model also provides a novel phase-isolated enclosed busbar. In the utility model, the novel phase-isolated enclosed busbar comprises an outer shell (10) and a conductor (11). The outer shell is a cylindrical structure, and the conductor is a cylindrical structure. The conductor is fixedly arranged in the outer shell and kept concentric with the outer shell through the single insulator support structure of the phase-isolated enclosed busbar as described above.

[0023] (III) Beneficial effects:

[0024] As can be seen from the above, the utility model provides a single insulator support structure for a phase-isolated enclosed busbar, comprising: an insulator base for fixed connection with the shell of the phase-isolated enclosed busbar, the insulator base is arranged on the outer surface of the shell and can be fixedly connected relative to the shell; a supporting insulator, the tail end of the supporting insulator is fixedly arranged relative to the insulator base, and the head end of the supporting insulator passes through the shell; a connecting rod, the connecting rod is arranged at the head end of the supporting insulator, the connecting rod extends relative to the supporting insulator toward the conductor direction of the phase-isolated enclosed busbar and forms an installation section; a positioning gasket, the positioning gasket is adjustably arranged on the installation section; an insulator head, the insulator head is adjustably arranged at the head end of the installation section, the insulator head is used to be arranged inside the conductor of the phase-isolated enclosed busbar, and there is an installation gap between the positioning gasket and the insulator head for conductor installation. The utility model also provides a new phase-isolated enclosed busbar provided with the single insulator support structure for the phase-isolated enclosed busbar.

[0025] Through the above structural design, the outstanding feature of the utility model is to change the conventional three-insulator support structure (three insulator support structures are arranged in the cross section perpendicular to the axis of the shell) into a single insulator support structure (one insulator support structure is arranged in the cross section perpendicular to the axis of the shell). In the prior art, the conventional phase-isolated enclosed busbar insulator support structure is three insulators evenly distributed in one support position, thereby ensuring the concentricity of the conductor and the shell. Through the structural optimization design of the insulator support structure of the utility model, the new single insulator support structure provided by the utility model only needs one insulator at each support position to ensure the concentricity of the conductor and the shell, thereby reducing the amount of insulators used, reducing costs, and reducing assembly workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0027] Figure 1 It is a structural schematic diagram of a single insulator support structure for a phase-isolated enclosed busbar in an embodiment of the utility model;

[0028] Figure 2It is a partial structural schematic diagram of a single insulator supporting structure of a phase-isolated enclosed busbar in an embodiment of the utility model.

[0029] exist Figure 1 and Figure 2 In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0030] Insulator base 1, supporting insulator 2, connecting rod 3, positioning gasket 4, insulator head 5,

[0031] Transition head 6, fastener 7, insulator base plate 8, sealing ring 9, housing 10, conductor 11. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0033] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] Please refer to Figure 1 and Figure 2 ,in, Figure 1 It is a structural schematic diagram of a single insulator support structure for a phase-isolated enclosed busbar in an embodiment of the utility model; Figure 2 It is a partial structural schematic diagram of a single insulator supporting structure of a phase-isolated enclosed busbar in an embodiment of the utility model.

[0035] The utility model provides a phase-isolated enclosed busbar single insulator support structure, which is applied to a phase-isolated enclosed busbar (comprising a shell 10 and a conductor 11, the shell 10 is a cylindrical structure, the conductor 11 is a cylindrical structure, the conductor 11 is arranged in the shell 10 and the shell 10 is required to be coaxially arranged), and is used to fix the conductor 11 in the shell 10. In the utility model, the phase-isolated enclosed busbar single insulator support structure includes the following components:

[0036] 1. An insulator base 1 for fixedly connecting to a shell 10 of a phase-isolated enclosed busbar.

[0037] The insulator base 1 is made of metal material, specifically aluminum. The insulator base 1 is disposed on the outer surface of the housing 10 and can be fixedly connected relative to the housing 10 .

[0038] In one embodiment of the present utility model, the insulator base 1 is fixed on the housing 10. Specifically, a mounting seat is provided on the housing 10, and the insulator base 1 is provided on the mounting seat.

[0039] In another embodiment of the utility model, the utility model can realize the fixing of the insulator base 1 and the supporting insulator 2 on the housing 10 by the way that the supporting insulator 2 cooperates with the insulator base 1. In this structure, the utility model further provides an insulator bottom plate 8 (the insulator bottom plate 8 is made of a hard material with high structural strength, which can be a metal plate, or epoxy resin, SMC material, etc.) on the upper side of the insulator base 1, the supporting insulator 2 is fixedly connected to the insulator bottom plate 8, and a sealing ring 9 is provided between the insulator bottom plate 8 and the insulator base 1.

[0040] Specifically, a hole is opened on the housing 10 according to the cross-sectional shape of the supporting insulator 2, and the upper end (tail end) of the supporting insulator 2 passes through the hole and is fixedly connected to the insulator base plate 8 provided on the insulator base 1. After the insulator base 1 and the supporting insulator 2 are assembled, they are equivalent to being clamped on the housing 10, thereby achieving the fixed installation of the insulator base 1 and the supporting insulator 2 on the housing 10. In this embodiment, the insulator base 1 adopts an annular structure design (which can be a circular ring, an elliptical ring, or a square ring), and the insulator base 1 includes an upper side and a lower side, and the upper side is used to set the insulator base plate 8. A plurality of threaded holes are provided on the upper side of the insulator base 1, and the insulator base plate 8 is set on the insulator base 1 by bolts. The lower side surface of the insulator base 1 is used to contact the outer side surface of the shell 10. The lower side surface of the insulator base 1 is set as the third contact surface, and the third contact surface is a smooth curved surface. In this way, the contact area between the insulator base 1 and the shell 10 can be increased, which can not only improve the stability of the insulator base 1 on the shell 10, but also will not cause structural damage to the shell 10.

[0041] Furthermore, the utility model provides an inner ring structure on the insulator base 1, the bolt holes are provided on the outer side of the inner ring structure, a mounting groove is provided on the upper side of the inner ring structure, and a sealing ring 9 is provided in the mounting groove.

[0042] 2. Support insulator 2.

[0043] The tail end of the supporting insulator 2 is fixedly arranged relative to the insulator base 1, and the head end of the supporting insulator 2 passes through the housing 10. The supporting insulator 2 is made of ceramic material (in the present utility model, the supporting insulator 2 is processed from insulating material, wherein the insulating material can be ceramic, or epoxy resin and other materials), the supporting insulator 2 is cylindrical as a whole, the middle section is fishbone-shaped (that is, it is formed by stacking and arranging multiple disc-shaped structures along the axial direction of the supporting insulator 2), the two ends are cylindrical, the upper end (tail end) is connected to the insulator base plate 8 by bolts, and the lower end (head end) is provided with a connecting rod 3. A hole is opened on the housing 10 according to the cross-sectional diameter of the supporting insulator 2, and the tail end of the supporting insulator 2 passes through the opening and the insulator base 1, and then abuts against the insulator base plate 8 and is fixed with bolts.

[0044] 3. Connecting rod 3.

[0045] The connecting rod 3 is made of metal. The connecting rod 3 is arranged at the head end of the supporting insulator 2. The connecting rod 3 is coaxially arranged with the supporting insulator 2. The connecting rod 3 can be fixedly arranged on the supporting insulator 2 or threadedly connected with the supporting insulator 2. The connecting rod 3 is arranged on the supporting insulator 2, with its upper end located inside the supporting insulator 2 and the other part located outside the supporting insulator 2. The connecting rod 3 extends relative to the supporting insulator 2 toward the conductor 11 of the phase-isolated closed busbar and forms an installation section. The installation section is used for the installation of the positioning gasket 4 and the insulator head 5. In a specific embodiment of the utility model, the outer side of the connecting rod 3 is provided with an external thread as a whole, and the connecting rod 3 is threadedly matched with the supporting insulator 2.

[0046] 4. Positioning gasket 4.

[0047] The positioning gasket 4 is adjustably arranged on the installation section. The function of the positioning gasket 4 is to cooperate with the insulator head 5 to fix the conductor 11. At the same time, the positioning gasket 4 can also be adjusted on the installation section to achieve the coaxiality adjustment of the conductor 11 and the housing 10.

[0048] In the present invention, the positioning gasket 4 is a plate structure with a certain curvature, and the positioning gasket 4 is preferably a smooth curved plate. The lower side of the positioning gasket 4 is a second contact surface arranged toward the outer side of the conductor 11, and the second contact surface is a smooth curved surface, which can increase the contact area between the positioning gasket 4 and the outer side of the conductor 11, and improve the stability of the positioning gasket 4 relative to the conductor 11.

[0049] 5. Insulator head 5.

[0050] The insulator head 5 is made of insulating material. The position of the insulator head 5 is adjustable and arranged at the head end of the installation section. The insulator head 5 is used to be arranged inside the conductor 11 of the phase-isolated closed busbar. There is an installation gap between the positioning gasket 4 and the insulator head 5 for installing the conductor 11. The upper end surface of the insulator head 5 is a first contact surface for contacting the inner side surface of the conductor 11. The first contact surface is a smooth curved surface. Furthermore, a transition head 6 is fixedly arranged on the first contact surface, and the transition head 6 is plugged into the conductor 11.

[0051] The insulator head 5 is an integrated structure, and a threaded hole is provided on the insulator head 5, which can be matched with the thread of the installation section. A transition head 6 is provided on the upper end surface of the insulator head 5. The transition head 6 can be a cylindrical structure or a regular polygonal prism structure. A conductor 11 opening is provided on the conductor 11 according to the cross-sectional shape of the transition head 6. The transition head 6 is assembled in the conductor 11 opening. The upper end surface of the insulator head 5 abuts against the inner side surface of the conductor 11, and the positioning gasket 4 abuts against the outer side surface of the conductor 11, so that the conductor 11 can be clamped between the insulator head 5 and the positioning gasket 4.

[0052] The utility model provides a fastener 7 (preferably a nut that can be threadedly matched with the mounting section) on the mounting section, and the fastener 7 abuts against the upper side surface of the positioning gasket 4.

[0053] The assembly method of the utility model is as follows: 1. First, assemble the insulator head 5, the positioning gasket 4 and the connecting rod 3 together, and then insert the insulator head 5 from the long hole opened on the conductor 11. The positioning gasket 4 can prevent the connecting rod 3 from falling into the conductor 11; 2. Use a tool to extend the conductor 11 into the housing 10. After the conductor 11 is inserted into the insulator installation position, install the sealing ring 9 on the insulator base 1; 3. First fix the insulator on the insulator base plate 8, then rotate the insulator and screw it into the connecting rod 3 until the insulator is screwed to the limit position of the connecting rod 3, and use bolts to connect the insulator base plate 8 and the insulator base 1.

[0054] Based on the above-mentioned phase-isolated enclosed busbar single insulator support structure, the utility model further provides a new phase-isolated enclosed busbar, the new phase-isolated enclosed busbar provided by the utility model comprises a shell 10 and a conductor 11, the shell 10 is a cylindrical structure, the conductor 11 is a cylindrical structure, and the conductor 11 is fixedly arranged in the shell 10 through the above-mentioned phase-isolated enclosed busbar single insulator support structure and keeps concentric with the shell 10. In a new phase-isolated enclosed busbar, a plurality of phase-isolated enclosed busbar single insulator support structures are arranged along the axis of the shell 10, preferably, all the phase-isolated enclosed busbar single insulator support structures are arranged at equal intervals on the shell 10 along a straight line (parallel to the axis of the shell 10).

[0055] As can be seen from the above, the utility model provides a single insulator support structure for a phase-isolated enclosed busbar, comprising: an insulator base 1 for fixed connection with the shell 10 of the phase-isolated enclosed busbar, the insulator base 1 is arranged on the outer surface of the shell 10 and can be fixedly connected relative to the shell 10; a supporting insulator 2, the tail end of the supporting insulator 2 is fixedly arranged relative to the insulator base 1, and the head end of the supporting insulator 2 passes through the shell 10; a connecting rod 3, the connecting rod 3 is arranged at the head end of the supporting insulator 2, the connecting rod 3 extends relative to the supporting insulator 2 toward the conductor 11 of the phase-isolated enclosed busbar and forms an installation section; a positioning gasket 4, the positioning gasket 4 is adjustably arranged on the installation section; an insulator head 5, the insulator head 5 is adjustably arranged at the head end of the installation section, the insulator head 5 is used to be arranged inside the conductor 11 of the phase-isolated enclosed busbar, and there is an installation gap between the positioning gasket 4 and the insulator head 5 for installing the conductor 11. The utility model also provides a new phase-isolated enclosed busbar provided with the single insulator support structure for the phase-isolated enclosed busbar.

[0056] Through the above structural design, the outstanding feature of the utility model is to change the conventional three-insulator support structure (three insulator support structures are arranged in the cross section perpendicular to the axis of the shell 10) into a single insulator support structure (one insulator support structure is arranged in the cross section perpendicular to the axis of the shell 10). In the prior art, the conventional phase-isolated closed busbar insulator support structure is that three insulators are evenly distributed in one support position, so as to ensure the concentricity of the conductor 11 and the shell 10. Through the structural optimization design of the insulator support structure of the utility model, the new single insulator support structure provided by the utility model only needs one insulator at each support position to ensure the concentricity of the conductor 11 and the shell 10, thereby reducing the amount of insulators used, reducing costs, and reducing assembly workload.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A single insulator support structure for a phase-isolated enclosed busbar, characterized in that: include: An insulator base (1) used for being fixedly connected to the shell of a phase-isolated enclosed busbar, wherein the insulator base is arranged on the outer surface of the shell and can be fixedly connected relative to the shell; A supporting insulator (2), wherein the tail end of the supporting insulator is fixedly arranged relative to the insulator base, and the head end of the supporting insulator passes through the housing; A connecting rod (3), the connecting rod being arranged at the head end of the supporting insulator, the connecting rod extending relative to the supporting insulator in the direction of the conductor of the isolated-phase closed busbar to form a mounting section; A positioning gasket (4), the position of which is adjustably arranged on the mounting section; An insulator head (5) is adjustably arranged at the head end of the installation section, and the insulator head is used to be arranged inside the conductor of the isolated phase closed busbar, and an installation gap for conductor installation is provided between the positioning gasket and the insulator head.

2. The isolated-phase enclosed busbar single insulator support structure according to claim 1 is characterized in that: The upper end surface of the insulator head is a first contact surface for contacting the inner side surface of the conductor, and the first contact surface is a smooth curved surface.

3. The isolated-phase enclosed busbar single insulator support structure according to claim 2 is characterized in that: A transition head (6) is fixedly arranged on the first contact surface, and the transition head is plugged into the conductor.

4. The isolated-phase enclosed busbar single insulator support structure according to claim 2, characterized in that: The lower side surface of the positioning gasket is a second contact surface arranged toward the outer side surface of the conductor, and the second contact surface is a smooth curved surface.

5. The isolated-phase enclosed busbar single insulator support structure according to claim 3, characterized in that: The outer side of the connecting rod is provided with an external thread, and the connecting rod is matched with the supporting insulator thread.

6. The isolated-phase enclosed busbar single insulator support structure according to claim 5, characterized in that: A fastener (7) is arranged on the installation section and is threadably matched with the installation section, and the fastener abuts against the upper side surface of the positioning gasket.

7. The isolated-phase enclosed busbar single insulator support structure according to claim 3 is characterized in that: The insulator head is threadably matched with the connecting rod.

8. The isolated-phase enclosed busbar single insulator support structure according to claim 1, characterized in that: The insulator base is an annular structure, the lower side surface of the insulator base is a third contact surface for contacting the outer side surface of the shell, and the third contact surface is a smooth curved surface.

9. The isolated-phase enclosed busbar single insulator support structure according to claim 8, characterized in that: An insulator bottom plate (8) is arranged on the upper side of the insulator base, the supporting insulator is fixedly connected to the insulator bottom plate, and a sealing ring (9) is arranged between the insulator bottom plate and the insulator base.

10. A new type of phase-isolated enclosed busbar, characterized in that: The invention comprises a shell (10) and a conductor (11), wherein the shell is a cylindrical structure, and the conductor is a cylindrical structure. The conductor is fixedly arranged in the shell and kept concentric with the shell by a single insulator support structure for a phase-isolated closed busbar as described in any one of claims 1 to 9.

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