CN109741919B - Conductive sealing head structure and cable-penetrating sleeve - Google Patents
Conductive sealing head structure and cable-penetrating sleeve Download PDFInfo
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- CN109741919B CN109741919B CN201811556322.9A CN201811556322A CN109741919B CN 109741919 B CN109741919 B CN 109741919B CN 201811556322 A CN201811556322 A CN 201811556322A CN 109741919 B CN109741919 B CN 109741919B
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- 238000007789 sealing Methods 0.000 title claims abstract description 51
- 210000004907 gland Anatomy 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
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Abstract
The invention provides a conductive sealing head structure and a cable-through sleeve, which comprises a split conductive sealing head, a sealing element and a connecting piece, wherein the split conductive sealing head comprises a top cover, a fastening section and an accommodating section which are sequentially connected through the connecting piece; the accommodating section is of a hollow structure and is used for accommodating a gland and a positioning pin, and the top of the sleeve can be installed in one step.
Description
Technical Field
The disclosure relates to a conductive sealing head structure and a cable-through sleeve.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The oil immersed transformer and the cable-through type sleeve structure in the power industry generally have a pull rod type and a cable-through type, wherein the sleeve of the cable-through type structure has higher requirements on the installation process, and if the cable-through type sleeve is not installed in place, a positioning pin of a conductive head of the sleeve is easy to loosen, so that the top of the sleeve generates heat and partial discharge is caused, and the safe operation of equipment is seriously influenced.
The reason that the cable-through sleeve positioning pin generates heat is analyzed, and the finding shows that according to the process requirements, when the conductive sealing head is installed, the conductive sealing head can be screwed to the upper surface of the sealing gasket in a threaded manner, and the positioning pin can be drawn to be in tight contact with the upper wall of the gland pin hole and be in tight contact with the lower wall of the lead connector pin hole. And after the pressing, rotating 45-90 degrees anticlockwise, aligning the mounting hole, and mounting a fastening bolt of the conductive sealing head and the gland. Due to the compression of the sealing washer during the anticlockwise rotation and the fastening of the bolt, the positioning pin can be compressed to be in close contact with the lower wall of the gland pin hole and the upper wall of the pin hole of the lead connector, and the positioning pin is compressed at the moment. Meanwhile, the fastened positioning pin can provide a standby force for the conductive sealing head and the lead connector (which are connected through the threads). When the conductive sealing head is not installed in place, the positioning pin cannot be fastened, and the conductive sealing head and the lead connector (which are connected through threads) cannot be provided with backup force. The transformer or the high resistance can produce continuous vibration at the operation in-process, and the locating pin can produce the clearance under the vibration effect with between the pinhole lower wall, causes the screw thread to compress tightly simultaneously, causes contact failure, and intermittent type nature discharges to lead to generating heat, fragile.
Disclosure of Invention
In order to solve the problems, the present disclosure provides a conductive sealing head structure and a cable-through sleeve, and the present disclosure can realize that the top of the sleeve is installed in one step.
According to some embodiments, the following technical scheme is adopted in the disclosure:
a conductive sealing head structure comprises a split conductive sealing head, a sealing element and a connecting piece, wherein the split conductive sealing head comprises a top cover, a fastening section and an accommodating section which are sequentially connected through the connecting piece, a fixing bolt is arranged on the top cover, the sealing element is arranged at the connecting part of the top cover, the fastening section and the accommodating section, and the fastening section is of a hollow structure and is used for accommodating a lead connector; the accommodating section is of a hollow structure and is used for accommodating the gland and the positioning pin.
As a further limitation, the seal is a sealing gasket.
As a further limitation, the connector is a connecting bolt.
As a further limitation, the inner edge of the fastening section is provided with a positive thread.
As a further limitation, a fixing bolt is arranged in the middle of the top cover, and reverse threads are arranged on the fixing bolt.
As a further limitation, the lower end of the fastening section has an extension toward the central outer side to connect with the upper end of the receiving section.
As a further limitation, the lower end of the receiving section is provided with an extension section towards the outside of the center to provide a connecting member.
As a further limitation, the section of the accommodating section is Z-shaped, and the distance between the step at the upper end and the lower end is matched with the length of the gland, so that the positioning pin is just clamped at the step after the split type conductive sealing head is connected. The positioning pin is clamped at the step position, so that the accommodating section and the fastening section can keep equal potential when electrified.
As a further limitation, the length of the fastening section is less than the length of the lead tab.
A cable-through sleeve comprises the conductive sealing head structure.
Compared with the prior art, the beneficial effect of this disclosure is:
according to the cable-through type bushing, the traditional conductive sealing head is designed into a split structure, in actual installation, split installation is carried out, only the sealing performance is guaranteed by installing and fastening all parts according to specified torque, the problem that the installation is not in place due to the difference of technical levels of constructors is avoided, and the problem that the installation on the top of the traditional cable-through type bushing cannot be checked to be in place is solved;
the cable-penetrating type sleeve has reliable installation, when the traditional cable-penetrating type sleeve is not installed in place at the top, a lead connector positioning pin is easy to loosen, overheating and partial discharge can occur in the long-term operation process, and the safe operation of equipment is seriously influenced; when the improved sleeve top structure is installed, the fastening of the split parts can be ensured, and the fastening of the positioning pin can be ensured.
The accident can be avoided by the aid of the structure, after the extra-high voltage engineering is put into operation on a large scale, the equipment safety influences the stable operation of a large power grid, the equipment needs to be withdrawn from the operation when the sleeve generates heat or the internal partial discharge occurs, the overall safety and stability of the power grid are seriously influenced, the situation can be effectively prevented from occurring by the aid of the structure, and the safe operation of a power system is facilitated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic structural view of a head of a cable-through casing;
FIG. 2 is a schematic view of the top structure of the reeved bushing;
FIG. 3 is a simplified structural diagram of the top of the improved bushing of the present disclosure;
FIG. 4 is a block diagram of the present disclosure with the modified casing installed;
the device comprises a wiring board 1, a wiring board 2, a conductive sealing head 3, a screw 4, a gasket 5, a screw 6, a gasket 7, a sealing gasket 8, a sealing gasket 9, a sealing gasket 10, a gland 11, a positioning pin 12, a sealing pressing plate 13, a lead connector 14, a bolt 15, a split type conductive end enclosure 16, a top cover 17, a fastening section 18 and an accommodating section.
The specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.
As shown in fig. 1 and 2, when the conductive sealing head is installed on the cable-through sleeve positioning pin, the conductive sealing head is screwed to the upper surface of the sealing gasket, and at the same time, the positioning pin is drawn to be in close contact with the upper wall of the gland pin hole and to be in close contact with the lower wall of the pin hole of the lead connector. And after the pressing, rotating 45-90 degrees anticlockwise, aligning the mounting hole, and mounting a fastening bolt of the conductive sealing head and the gland. Due to the compression of the sealing washer during the anticlockwise rotation and the fastening of the bolt, the positioning pin can be compressed to be in close contact with the lower wall of the gland pin hole and the upper wall of the pin hole of the lead connector, and the positioning pin is compressed at the moment. Meanwhile, the fastened positioning pin can provide a standby force for the conductive sealing head and the lead connector (which are connected through the threads). When the conductive sealing head is not installed in place, the positioning pin cannot be fastened, and the conductive sealing head and the lead connector (which are connected through threads) cannot be provided with backup force. The transformer or the high resistance can produce continuous vibration at the operation in-process, and the locating pin can produce the clearance under the vibration effect with between the pinhole lower wall, causes the screw thread to compress tightly simultaneously, causes contact failure, and intermittent type nature discharges to lead to generating heat, fragile.
The present disclosure provides an improved conductive sealing head, as shown in fig. 3, including a split conductive sealing head 15, a sealing member and a connecting member, where the split conductive sealing head 15 includes a top cover 16, a fastening section 17 and an accommodating section 18 sequentially connected by a connecting bolt, the top cover 16 is provided with a fixing bolt, the fixing bolt is provided with a reverse thread, the top cover 16 and the fastening section 17, and the joint of the fastening section 17 and the accommodating section 18 are both provided with a sealing gasket 8 to match with the connecting bolt, and the fastening section 17 is a hollow structure to accommodate a lead connector 13; the receiving section 18 is a hollow structure for receiving the gland 10 and the positioning pin 11.
The inner edge of the fastening section 17 is provided with a positive thread.
The fastening section 17 has an extension toward the outside of the center at the lower end thereof to be connected with the upper end of the receiving section 18.
The lower end of the receiving section 18 is provided with an extension toward the outside of the center to provide a connection bolt.
The section of the containing section 18 is Z-shaped, and the distance between the step at the upper end and the lower end is matched with the length of the gland 10, so that the positioning pin 11 is just clamped at the step position after the split type conductive sealing head is connected.
The length of the fastening section 17 is smaller than the length of the lead tab 13.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. The utility model provides a conductive seal head structure, characterized by: the split type conductive sealing head comprises a top cover, a fastening section and an accommodating section which are sequentially connected through a connecting piece, wherein a fixing bolt is arranged on the top cover, the sealing piece is arranged at the joint of the top cover and the fastening section, and the connecting part of the fastening section and the accommodating section, and the fastening section is of a hollow structure to accommodate a lead connector; the accommodating section is of a hollow structure and is used for accommodating the gland and the positioning pin;
the gland is of a T-shaped hollow cylindrical structure with different upper and lower outer diameters.
2. A conductive seal head structure as claimed in claim 1, wherein: the sealing element is a sealing gasket.
3. A conductive seal head structure as claimed in claim 1, wherein: the connecting piece is a connecting bolt.
4. A conductive seal head structure as claimed in claim 1, wherein: and the inner edge of the fastening section is provided with a positive thread.
5. A conductive seal head structure as claimed in claim 1, wherein: a fixing bolt is arranged in the middle of the top cover, and reverse threads are arranged on the fixing bolt.
6. A conductive seal head structure as claimed in claim 1, wherein: the lower end of the fastening section is provided with an extension section towards the outside of the center so as to be connected with the upper end part of the accommodating section.
7. A conductive seal head structure as claimed in claim 1, wherein: the lower end of the containing section is provided with an extension section towards the outer side of the center so as to be provided with a connecting piece.
8. A conductive seal head structure as claimed in claim 1, wherein: the section of the accommodating section is Z-shaped, the distance between the step at the upper end and the lower end is matched with the length of the gland, so that after the split type conductive sealing head is connected, the positioning pin is just clamped at the step position.
9. A conductive seal head structure as claimed in claim 1, wherein: the length of the fastening section is smaller than that of the lead connector.
10. A cable-through sleeve is characterized in that: comprising an electrically conductive sealing head structure according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556322.9A CN109741919B (en) | 2018-12-19 | 2018-12-19 | Conductive sealing head structure and cable-penetrating sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556322.9A CN109741919B (en) | 2018-12-19 | 2018-12-19 | Conductive sealing head structure and cable-penetrating sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109741919A CN109741919A (en) | 2019-05-10 |
| CN109741919B true CN109741919B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811556322.9A Active CN109741919B (en) | 2018-12-19 | 2018-12-19 | Conductive sealing head structure and cable-penetrating sleeve |
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| Country | Link |
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| CN (1) | CN109741919B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815061A (en) * | 1996-01-19 | 1998-09-29 | Computer Products, Inc. | Low cost and manufacturable transformer meeting safety requirements |
| JPH11340057A (en) * | 1998-05-26 | 1999-12-10 | Hitachi Ltd | Stationary induction electric apparatus |
| CN201982718U (en) * | 2011-04-12 | 2011-09-21 | 鲍伟军 | Pulse electromagnetic valve |
| CN206834667U (en) * | 2017-06-14 | 2018-01-02 | 山东科瑞井控系统制造有限公司 | A kind of New type detachable cable penetration device |
| CN209249259U (en) * | 2018-10-16 | 2019-08-13 | 南京智达电气设备有限公司 | A kind of bushing shell for transformer head construction for preventing fever from guaranteeing sealing |
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2018
- 2018-12-19 CN CN201811556322.9A patent/CN109741919B/en active Active
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| CN109741919A (en) | 2019-05-10 |
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