CN213906191U - Direct current wall bushing - Google Patents
Direct current wall bushing Download PDFInfo
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- CN213906191U CN213906191U CN202023141088.9U CN202023141088U CN213906191U CN 213906191 U CN213906191 U CN 213906191U CN 202023141088 U CN202023141088 U CN 202023141088U CN 213906191 U CN213906191 U CN 213906191U
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- current
- insulating
- wall bushing
- carrying ring
- sleeve
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Abstract
The utility model discloses a direct current wall bushing, including current-conducting tube, electrically conductive sealed head and current-carrying ring, still include insulating position sleeve, insulating position sleeve sets up in the electrically conductive sealed head, the inner chamber of insulating position sleeve with the current-conducting tube cooperation, insulating position sleeve is two, two insulating position sleeve distributes the both sides of current-carrying ring. After the conductive tube runs through the insulating positioning sleeve, the conductive tube can be positioned by the insulating positioning sleeve, or the insulating positioning sleeve can stop the radial displacement of the conductive tube, so that the conductive tube is limited to generate the radial displacement. So, just can be with the radial displacement control of contact tube in less within range to make the current-carrying ring pressurized even, the phenomenon that overpressures or compression capacity are not enough can not appear, thereby improve direct current wall bushing's reliability.
Description
Technical Field
The utility model relates to an electric power electric field, more specifically say, relate to a direct current wall bushing.
Background
The direct current wall bushing includes: the current-carrying ring comprises a conductive sealing head, a conductive tube and a current-carrying ring. The current-carrying ring is arranged inside the conductive sealing head. The conductive tube can be inserted into the conductive sealing head and penetrate through the current-carrying ring. The outer side surface of the current-carrying ring is in contact with the inner side surface of the conductive sealing head, and the inner side surface of the current-carrying ring is in elastic extrusion contact with the outer side surface of the conductive tube. Namely, the conductive tube is connected with the conductive sealing head through the current-carrying ring for current carrying.
However, under the action of the electric force of the short circuit, the conductive tube can generate obvious radial displacement, so that the pressure of part of the current-carrying ring is reduced or lost, the contact resistance is suddenly increased, and the current-carrying ring can be welded. In addition, when the conductive tube is displaced in the radial direction, the conductive tube collides with the inner wall of the conductive sealing head, and is shunted and poorly contacted, thereby causing an arc.
Therefore, how to control the radial displacement of the conductive tube so as to ensure the reliability of the vertical wall bushing is a critical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at controlling the radial displacement of the conductive tube, thereby ensuring the reliability of the vertical wall bushing. In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a direct current wall bushing, includes the current-conducting tube, electrically conducts sealed head and current-carrying ring, still includes insulating position sleeve, insulating position sleeve sets up in the electrically conducts sealed head, the inner chamber of insulating position sleeve with the current-conducting tube cooperation, insulating position sleeve is two, two insulating position sleeve distributes the both sides of current-carrying ring.
Preferably, when the conductive tube is fitted in the insulating positioning sleeve, a gap is formed between the conductive tube and the insulating positioning sleeve.
Preferably, the gap is 0.2mm to 0.3 mm.
Preferably, the insulating positioning sleeve is made of polytetrafluoroethylene.
Preferably, the inner wall of the conductive sealing head is provided with a mounting groove, and the insulating positioning sleeve is plugged in the mounting groove.
Preferably, the insulating positioning sleeve is provided with a notch, and the insulating positioning sleeve is disconnected at the notch.
Preferably, the gap is of a diagonal shape.
Preferably, the width of the gap is between 4.8mm and 5.2 mm.
Preferably, the current-carrying ring is a watchband contact finger.
Preferably, two or more insulating positioning sleeves are respectively arranged on two sides of the current-carrying ring.
According to the technical scheme, after the conductive tube penetrates through the insulating positioning sleeve, the conductive tube can be positioned by the insulating positioning sleeve, or the insulating positioning sleeve can block the radial displacement of the conductive tube, so that the radial displacement of the conductive tube is limited. So, just can be with the radial displacement control of contact tube in less within range to make the current-carrying ring pressurized even, the phenomenon that overpressures or compression capacity are not enough can not appear, thereby improve direct current wall bushing's reliability.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without inventive efforts.
Fig. 1 is a cross-sectional view of a dc wall bushing according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an insulation positioning sleeve according to an embodiment of the present invention.
Wherein, 1 is a conductive sealing head, 2 is a conductive tube, 3 is an insulating positioning sleeve, 4 is a current-carrying ring, and 5 is a gap.
Detailed Description
The utility model discloses a direct current wall bushing, the radial displacement of the contact tube in this sleeve pipe is controlled at the minizone to ensure upright wall bushing's reliability.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a cross-sectional view of a dc wall bushing according to an embodiment of the present invention. The utility model provides a direct current wall bushing includes: the device comprises a conductive tube 2, a conductive sealing head 1, a current-carrying ring 4 and an insulating positioning sleeve 3. The current-carrying ring 4 is arranged inside the conductive sealing head 1. After the conductive tube 2 extends into the electric sealing head, the conductive tube 2 penetrates through the inner cavity of the current-carrying ring 4. The conductive tube 2 is in pressing contact with the current-carrying ring 4. The outer side surface of the current-carrying ring 4 is in contact with the inner wall of the conductive sealing head 1, and the inner side surface of the current-carrying ring 4 is in extrusion contact with the conductive tube 2, namely, the conductive tube 2 is connected with the conductive sealing head 1 through the current-carrying ring 4 for current carrying.
In order to improve the location effect to the current-conducting tube 2, the utility model discloses set up insulating position sleeve 3 into two, two insulating position sleeve 3 divide and establish in the both sides of current-carrying ring 4. I.e. the contact tube 2 is positioned on both sides of the current-carrying ring 4, the radial position of the contact tube 2 in contact with the current-carrying ring 4 can be controlled to a small extent.
It should be noted that, two or more insulating positioning sleeves 3 may be provided on both sides of the current carrying ring 4 according to the actual application. For example, if the axial dimensions of the conductive tube 2 and the conductive sealing head 1 are large, more insulating positioning sleeves 3 can be arranged on both sides of the current-carrying ring 4. If the axial dimensions of the current-carrying tube 2 and the current-carrying sealing head 1 are small, an insulating locating sleeve 3 can be arranged on each side of the current-carrying ring 4. In addition, the number of the insulating positioning sleeves 3 on the two sides of the current-carrying ring 4 may be equal or unequal. The number of the insulating positioning sleeves 3 on both sides of the current-carrying ring 4 is not particularly limited, and the number falls within the protection range of the present disclosure as long as the insulating positioning sleeves can control the radial displacement of the conductive tube 2.
For the convenience of assembly, the utility model discloses inject and have the clearance between conductive tube 2 and the insulating position sleeve 3, so, conductive tube 2 just can stretch into the electrically conductive sealed head 1 smoothly in, and run through insulating position sleeve 3 and current-carrying ring 4 more smoothly.
The utility model controls the clearance between the conductive tube 2 and the insulation positioning sleeve 3 between 0.2mm-0.3 mm. Within this range, the insulating positioning sleeve 3 can effectively position the conductive tube 2, and the conductive tube 2 can be smoothly inserted into the insulating positioning sleeve 3.
The utility model discloses the material preference with insulating position sleeve 3 is polytetrafluoroethylene. The polytetrafluoroethylene insulating positioning sleeve 3 has excellent chemical stability and electrical insulation.
The insulating positioning sleeve 3 is installed in the following way: the inner wall of the conductive sealing head 1 is provided with a mounting groove, and the insulating positioning sleeve 3 is plugged in the mounting groove.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an insulating positioning sleeve 3 according to an embodiment of the present invention. In order to facilitate the installation of insulating position sleeve 3, the utility model discloses set up opening 5 on insulating position sleeve 3, insulating position sleeve 3 is in the disconnection of opening 5 department. So set up, insulating position sleeve 3 can stretch out and draw back deformation in the circumferencial direction to be convenient for install into mounting groove.
Further, the notch 5 is designed to be oblique, so that two broken edges corresponding to the notch 5 are oblique edges. The inclined notch 5 can prevent the insulating positioning sleeve 3 from sliding out of the mounting groove. The inclination of the gap 5 is preferably 45 °.
The width value of the gap 5 is between 4.8mm and 5.2 mm. In this numerical range, insulating position sleeve 3 can enough form effectual circumference location to contact tube 2, is convenient for insulating position sleeve 3 to install in the mounting groove again simultaneously.
The current-carrying ring 4 is installed in the corresponding installation groove similarly to the installation of the insulating positioning sleeve 3.
The utility model discloses it indicates to contact the watchband with current-carrying ring 4 preferred, and the table electricity is touched and is indicated can solve the problem that the contact tube 2 stretches out and draws back along with temperature variation to ensure sheathed tube current-carrying and sealed.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a direct current wall bushing, includes current-conducting tube, electrically conductive sealed head and current-carrying ring, its characterized in that still includes insulating position sleeve, insulating position sleeve sets up in the electrically conductive sealed head, the inner chamber of insulating position sleeve with the current-conducting tube cooperation, insulating position sleeve is two, two insulating position sleeve distributes the both sides of current-carrying ring.
2. The dc wall bushing of claim 1, wherein a gap is provided between the conductive tube and the insulating positioning sleeve when the conductive tube is fitted into the insulating positioning sleeve.
3. A dc wall bushing according to claim 2, wherein the gap is 0.2-0.3 mm.
4. The direct current wall bushing of claim 1, wherein the insulating positioning sleeve is made of polytetrafluoroethylene.
5. The direct-current wall bushing according to claim 1, wherein a mounting groove is formed in an inner wall of the conductive sealing head, and the insulating positioning sleeve is plugged in the mounting groove.
6. The direct current wall bushing of claim 1, wherein the insulating positioning sleeve has a notch, and the insulating positioning sleeve breaks at the notch.
7. The direct current wall bushing of claim 6, wherein the gap is tapered.
8. A DC wall bushing according to claim 6, wherein the width of the gap is between 4.8mm and 5.2 mm.
9. The direct current wall bushing of claim 1, wherein the current carrying ring is a watchband finger.
10. The direct current wall bushing of claim 1, wherein two or more of the insulating positioning sleeves are respectively disposed on two sides of the current-carrying ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023141088.9U CN213906191U (en) | 2020-12-23 | 2020-12-23 | Direct current wall bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023141088.9U CN213906191U (en) | 2020-12-23 | 2020-12-23 | Direct current wall bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213906191U true CN213906191U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023141088.9U Active CN213906191U (en) | 2020-12-23 | 2020-12-23 | Direct current wall bushing |
Country Status (1)
| Country | Link |
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| CN (1) | CN213906191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745870A (en) * | 2021-08-24 | 2021-12-03 | 西安交通大学 | Center current-carrying guide rod and high-voltage power transmission equipment |
-
2020
- 2020-12-23 CN CN202023141088.9U patent/CN213906191U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745870A (en) * | 2021-08-24 | 2021-12-03 | 西安交通大学 | Center current-carrying guide rod and high-voltage power transmission equipment |
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