阅读说明：本技术 一种离相母线触头结构 (Phase-isolated bus contact structure ) 是由 林泽江 叶纪林 陈义军 张静 于 2018-07-30 设计创作，主要内容包括：本发明提出了一种离相母线触头结构,涉及输电设备领域。该结构包括检修盖3、检修座6、母体外壳5、触头筒1和触片2。本发明利用触头筒1圆形顶部结构,在不影响短路试验触头使用的前提下,在触头筒1顶部焊接用于检修接地的触片2,从而使短路试验和检修接地接口合二为一；不仅减少了制造成本而且结构占用空间较小,能适用于项目狭小的空间布置,结构适用性强。(The invention provides an off-phase bus contact structure, and relates to the field of power transmission equipment. The structure comprises an access cover 3, an access seat 6, a parent shell 5, a contact cylinder 1 and a contact piece 2. According to the invention, by utilizing the circular top structure of the contact cylinder 1, on the premise of not influencing the use of a short-circuit test contact, the contact piece 2 for overhauling grounding is welded on the top of the contact cylinder 1, so that a short-circuit test interface and an overhauling grounding interface are combined into a whole; not only reduced manufacturing cost but also the structure occupation space is less, can be applicable to the narrow and small spatial arrangement of project, and the structural suitability is strong.)

1. An isolated phase bus contact structure, comprising: a contact post connected with short-circuit experimental equipment is welded on the bus conductor (4), and the contact post is a short-circuit experimental interface of the bus conductor (4); the top of the contact column is welded with a contact piece (2) connected with the grounding maintenance equipment, and the contact piece (2) is a maintenance grounding interface of the bus conductor (4); the short-circuit test interface and the maintenance grounding interface of the bus conductor (4) are combined into a whole.

2. An off-phase busbar contact structure according to claim 1, wherein: the bus bar maintenance device is characterized by also comprising a bus bar shell (5) and an maintenance seat (6) welded on the bus bar shell (5), wherein the maintenance seat (6) is provided with an maintenance cover (3); the bus conductor (4) is arranged in the bus shell (5); the contact structure is arranged in the overhaul seat (6).

3. The off-phase busbar contact structure according to claim 1 or 2, wherein: the contact column is a hollow contact cylinder (1) with two open ends.

4. The phase-isolated busbar contact structure according to claim 3, wherein: the contact cylinder (1) is formed by machining a metal pipe on the pipe wall and has a smooth outer surface (1-1).

5. The phase-isolated busbar contact structure according to claim 4, wherein: the metal pipe is an aluminum pipe.

6. The phase-isolated busbar contact structure according to claim 4, wherein: the roughness of the outer surface (1-1) is not more than 6.3.

7. The phase-isolated busbar contact structure according to claim 3, wherein: the contact piece (2) is semicircular.

8. The off-phase busbar contact structure according to claim 7, wherein: the radius of the contact piece (2) is larger than the inner diameter of the contact cylinder (1) and smaller than the outer diameter of the contact cylinder (1), and the half circumference of the contact piece (2) is welded with the cross section of the top of the contact cylinder (1).

9. The phase-isolated busbar contact structure according to claim 3, wherein: during the short-circuit test, the access cover (3) is opened, and the short-circuit test conductor is sleeved on the contact cylinder (1) to perform the short-circuit test.

10. The phase-isolated busbar contact structure according to claim 3, wherein: when the machine is stopped for maintenance, the maintenance cover (3) is opened, the grounding rod clip of the maintenance grounding device is occluded with the contact piece (2), and the machine is stopped for maintenance.

Technical Field

The invention relates to the field of power transmission equipment, in particular to a contact structure suitable for both short-circuit tests and maintenance grounding.

Background

In an off-phase bus system, a short-circuit test device and a maintenance grounding device are required to be arranged on an off-phase bus respectively according to functional requirements. Patent CN204166011U discloses in the experimental conductor connection structure of closed bus short circuit of phase separation a fixing base has all welded on the bus conductor of the short circuit conductor connection structure of phase separation, and it has the bolt hole to open on the fixing base, and the short circuit test conductor passes through bolt and nut subassembly and connects on the fixing base of generating line, accomplishes the short circuit test. Fig. 5 is a detailed view of a conventional maintenance grounding device, and in fig. 5, a grounding transition row is welded on a bus conductor and is connected with a maintenance grounding rod of the maintenance grounding device to complete shutdown maintenance. However, in the prior art, the two test structures are separately provided, which increases the cost of the short circuit or open circuit test and occupies a large amount of space, resulting in that the structural arrangement cannot be realized in a case where the project space is small.

Disclosure of Invention

The invention aims to solve the problems and provides an off-phase bus contact structure.A contact post connected with short-circuit experimental equipment is welded on a bus conductor 4 and is a short-circuit test interface of the bus conductor 4; the top of the contact column is welded with a contact piece 2 connected with grounding maintenance equipment, and the contact piece 2 is a maintenance grounding interface of a bus conductor 4; the short-circuit test interface and the maintenance grounding interface of the bus conductor 4 are combined into a whole.

The phase-isolated bus contact structure also comprises a bus shell 5 and an overhaul base 6 welded on the bus shell 5, wherein the overhaul base 6 is provided with an overhaul cover 3; the bus conductor 4 is arranged in the bus shell 5; the contact structure is arranged in the service seat 6.

Preferably, the contact column is a hollow contact barrel 1 with two open ends; the contact cylinder 1 is formed by machining a metal pipe on the pipe wall and has a smooth outer surface 1-1; the roughness of the outer surface 1-1 is not more than 6.3.

Preferably, the metal tube is an aluminum tube having a diameter of 140 mm.

Preferably, the contact piece 2 is semicircular; the radius of the contact plate 2 is larger than the inner diameter of the contact cylinder 1 and smaller than the outer diameter of the contact cylinder 1, and the half circumference of the contact plate 2 is welded with the cross section of the top of the contact cylinder 1.

During the short-circuit test, the access cover 3 is opened, and the short-circuit test conductor is sleeved on the contact cylinder 1 to perform the short-circuit test.

When the machine is stopped for maintenance, the maintenance cover 3 is opened, the grounding rod clip of the maintenance grounding device is occluded with the contact piece 2, and the machine is stopped for maintenance.

Compared with the prior art, the invention has the following remarkable advantages:

(1) according to the invention, an aluminum pipe with the diameter of 140mm is selected as a raw material, and a pipe wall is machined to form a smooth contact surface which is used as a lap joint surface for short circuit test connection, so that the reliable current transition of the contact surface is ensured;

(2) according to the invention, the contact piece 2 for maintenance grounding is ingeniously designed according to the inner diameter of the contact barrel 1, so that a grounding rod clip can be conveniently and smoothly inserted into the contact barrel 1, and the clip can be reliably occluded with the contact piece 2;

(3) the contact of the invention is welded with the bus conductor 4, and the structure is simple, compact and reliable;

(4) according to the invention, by utilizing the circular top structure of the contact cylinder 1, on the premise of not influencing the use of a short-circuit test contact, the contact piece 2 for overhauling grounding is welded on the top of the contact cylinder 1, so that a short-circuit test interface and an overhauling grounding interface are combined into a whole; not only reduced manufacturing cost but also the structure occupation space is less, can be applicable to the narrow and small spatial arrangement of project, and the structural suitability is strong.

Drawings

FIG. 1, a cross-sectional view of a front view of a contact

FIG. 2, top view of the contact

FIG. 3 is a view showing the welding position of the contact and the bus bar

FIG. 4 is a detailed view of a conventional short circuit test apparatus

FIG. 5 is a detailed view of a conventional grounding device for inspection

The reference numerals in the figures denote the following meanings: the bus-bar inspection device comprises a contact cylinder 1, an outer surface 1-1, a contact piece 2, an inspection cover 3, a bus-bar conductor 4, a bus-bar shell 5 and an inspection seat 6.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.

As shown in fig. 1, the contact detailed view of the invention comprises a contact cylinder 1 and a contact plate 2, wherein a hollow cylinder with two open ends, namely the contact cylinder 1, is welded on the shell of a bus conductor 4, and a semicircular contact plate 2 is welded on the top of the contact cylinder 1;

preferably, the contact cylinder 1 is machined from an aluminum tube having a diameter of 140mm using a tube wall, and has a smooth outer surface 1-1, the roughness of the outer surface 1-1 being not more than 6.3.

As shown in figure 2, the semi-circle of the contact plate 2 is welded with the cross section of the top of the contact cylinder 1, and the reserved semi-circle space is convenient for the ground rod clip of the grounding device to be occluded with the contact plate 2 for maintenance in a shutdown mode.

As shown in fig. 3, the off-phase bus contact structure further includes a bus bar housing 5 and an access seat 6 welded on the bus bar housing 5, wherein an access cover 3 is arranged on the access seat 6; the bus conductor 4 is arranged in a bus shell 5; the contact structure is arranged in the service seat 6. During the short-circuit test, the access cover 3 is opened, and the contact is connected with a short-circuit test conductor; when the machine is stopped for maintenance, the maintenance cover 3 is opened, and the contact is connected with the maintenance grounding device.

Fig. 4 is a detailed view of a conventional short circuit test apparatus, in which a short circuit test contact is welded to a bus conductor 4 for a short circuit test.

Fig. 5 is a detailed view of a conventional maintenance grounding device, wherein a grounding transition bar is welded on a conductor and is used for connecting a maintenance grounding rod for grounding maintenance.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.