CN203787928U - Oil gas interface lifting device of DC cable terminal - Google Patents
Oil gas interface lifting device of DC cable terminal Download PDFInfo
- Publication number
- CN203787928U CN203787928U CN201420175585.6U CN201420175585U CN203787928U CN 203787928 U CN203787928 U CN 203787928U CN 201420175585 U CN201420175585 U CN 201420175585U CN 203787928 U CN203787928 U CN 203787928U
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- China
- Prior art keywords
- oil
- direct current
- interface
- current cables
- lifting device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Gas Or Oil Filled Cable Accessories (AREA)
Abstract
The utility model relates to an oil gas interface lifting device of a DC cable terminal. The oil gas interface lifting device comprises a cable, cable wire cores, a wire outgoing rod, a top cover, a marquee, an insulating casing, insulating oil and a sleeve flange, and is characterized by further comprising a prefabricated oil tank, wherein one end of the prefabricated oil tank is connected to the sleeve flange by using a tightening bolt, and the other end is connected with the top cover by using a tightening bolt. The insulating oil is poured into a cavity of the insulating sleeve of the DC cable terminal to lift the insulating oil interface upwardly till the height of the insulating oil interface is lifted up to higher than a half of the height of the prefabricated oil tank, the height of insulating oil interface exceeds the horizontal plane of the sleeve flange, a Faraday cage is formed on the sleeve flange of the DC cable terminal for protecting the DC cable terminal, so as to prevent the occurrence of discharge phenomenon of the air interface of the DC cable terminal under the action of a DC electric field or an ultra-high-voltage AC electric field.
Description
Technical field
The utility model relates to a kind of cable termination interface of oil and gas lifting device, particularly disclose a kind of interface of oil and gas lifting device that is directly installed on direct current cables terminal and ultra high voltage crosslinked cable terminal top, be applicable to 66kV～1000kV direct current cables terminal and ac cable terminal.
Background technology
Direct current cables terminal is different from ac cable terminal, DC electric field characteristic and AC field characteristic have very large difference, in the insulating sleeve of ac cable terminal, be filled with after insulating oil, reserved portion of air chamber, insulating sleeve top, when cable line moves, insulating oil and air interface height are along with the variation of temperature raises or reduces, and the insulating sleeve top of direct current cables terminal can not have air chamber to exist, the way addressing this problem normally adopts the form of external forced feed case, in direct current cables terminal bottom, with oil pipe line, be connected on forced feed case, forced feed case can be put appointed place on the ground, make insulating oil be full of whole terminal inner, forced feed case diameter 350mm, highly about 1200mm, after pressure tank installation, be placed on cable termination side, guard rail need to be built and ceiling protects, need periodic inspection and maintenance simultaneously, this mode has not only increased the cost of product, also increased operation cost, if exchange outdoor terminal structure and adopt, there is air chamber in insulating sleeve top, easily electric discharge under DC electric field or ultra high voltage electric field.
Summary of the invention
The purpose of this utility model is to address the deficiencies of the prior art; design a kind of direct current cables terminal interface of oil and gas lifting device; be directly installed on direct current cables terminal and ultra high voltage crosslinked cable terminal top; the interface of insulating oil and air is risen in interface of oil and gas lifting device; interface of oil and gas lifting device is electric conducting material, has formed a Faraday cage, and inside is played a protective role; under DC electric field or extra-high-voltage alternating current electric field action, air interface can not produce electric discharge phenomena.
The utility model is achieved in that a kind of direct current cables terminal interface of oil and gas lifting device, comprise cable, cable core, outlet rod, top cover, canopy, insulating sleeve, insulating oil and casing flange, it is characterized in that: also comprise prefabricated fuel tank, the described bottomless uncovered of prefabricated fuel tank, its one end adopts to tight a bolt and is connected on casing flange, the other end adopts to tight a bolt and is connected with top cover, in chamber by from the insulating sleeve to direct current cables terminal, pour into insulating oil and upwards promote insulating oil interface, until insulating oil interfacial level is promoted to the more than 1/2nd of prefabricated fuel tank height, insulating oil interfacial level surpasses casing flange horizontal plane, on the casing flange of direct current cables terminal, form a Faraday cage, protection direct current cables terminal, avoid under DC electric field or extra-high-voltage alternating current electric field action, the air interface of direct current cables terminal produces electric discharge phenomena.The outlet rod place of drawing, center of described top cover adds a clamp nut, strengthens the sealing of top cover and outlet rod junction.The upper surface that is connected to casing flange in the chamber of described prefabricated fuel tank is provided with the pressure restraining element for pressure buffer, and this pressure restraining element is detachable.
Prefabricated fuel tank of the present utility model adopts metal material or non-metallic conducting material manufacture to form, can be applicable to direct current cables terminal and can be applicable to again extra-high-voltage alternating current cable termination, its profile can be arranged to polyhedron or spherical as required, and its inner pressure restraining element can be selected to install or cancel as required.
The utility model direct current cables terminal interface of oil and gas lifting device, when mounted, only need prefabricated fuel tank be fixed in the terminal flange at cable termination top with tighting a bolt, after being connected with outlet rod, passes in the middle of prefabricated fuel tank cable core, as required, from prefabricated top of oil-tank, fill with or inject part insulating oil, then top cover, clamp nut and canopy are installed successively, and fixing with tighting a bolt, complete whole installation process.
The beneficial effects of the utility model are: the utility model product has been filled up the blank of cable termination interface of oil and gas lifting device, the interface of insulating oil and air is risen in interface of oil and gas lifting device, inside is played a protective role, under DC electric field or extra-high-voltage alternating current electric field action, air interface can not produce electric discharge phenomena, for the long-time running of direct current cables terminal and extra-high-tension cable terminal provides reliable assurance, compare with external forced feed box structure, volume is little, easy for installation, save Master Costs such as buying forced feed case, do not need periodic inspection and maintenance, there is not the risk of leakage of oil yet.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In figure: 1, cable; 2, cable core; 3, outlet rod; 4, canopy; 5, clamp nut; 6, top cover; 7, first tight a bolt; 8, prefabricated fuel tank; 9, pressure restraining element; 10, second tight a bolt; 11, casing flange; 12, insulating sleeve; 13, insulating oil.
Embodiment
With reference to the accompanying drawings, a kind of direct current cables terminal of the utility model interface of oil and gas lifting device, be applied to direct current cables terminal and can be applicable to again extra-high-voltage alternating current cable termination, comprise cable 1, cable core 2, outlet rod 3, top cover 6, canopy 4, insulating sleeve 12, insulating oil 13, casing flange 11 and prefabricated fuel tank 8.The bottomless uncovered of prefabricated fuel tank 8, its one end adopts second to tight a bolt and 10 be connected on casing flange 11, the other end adopts first to tight a bolt and 7 be connected with top cover 6, in chamber by from the insulating sleeve 12 to direct current cables terminal, pour into insulating oil 13 and upwards promote insulating oil interface, until the interfacial level of insulating oil 13 is promoted to the more than 1/2nd of prefabricated fuel tank 8 height, insulating oil 13 interfacial levels surpass the horizontal plane of casing flange 11, on the casing flange of direct current cables terminal, form a Faraday cage, protection direct current cables terminal, avoid under DC electric field or extra-high-voltage alternating current electric field action, the air interface of direct current cables terminal produces electric discharge phenomena.Outlet rod 3 places of drawing at top cover 6 centers add a clamp nut 5, strengthen the sealing of top cover 6 and outlet rod 3 junctions.The upper surface that is connected to casing flange 11 in the chamber of prefabricated fuel tank 8 is provided with the detachable pressure restraining element 9 for compensator or trimmer pressure.
Prefabricated fuel tank of the present utility model adopts metal material or non-metallic conducting material manufacture to form, can be applicable to direct current cables terminal and can be applicable to again extra-high-voltage alternating current cable termination, its profile can be arranged to polyhedron or spherical as required, and its inner pressure restraining element can be selected to install or cancel as required.
When mounted, the utility model only need be fixed on prefabricated fuel tank in the terminal flange at cable termination top with tighting a bolt, after being connected with outlet rod, passes in the middle of prefabricated fuel tank cable core, as required, from prefabricated top of oil-tank, fill with or inject part insulating oil, then top cover, clamp nut and canopy are installed successively, and fixing with tighting a bolt, complete whole installation process.
Claims (4)
1. a direct current cables terminal interface of oil and gas lifting device, comprise cable, cable core, outlet rod, top cover, canopy, insulating sleeve, insulating oil and casing flange, it is characterized in that: also comprise prefabricated fuel tank, the described bottomless uncovered of prefabricated fuel tank, its one end adopts to tight a bolt and is connected on casing flange, the other end adopts to tight a bolt and is connected with top cover, in chamber by from the insulating sleeve to direct current cables terminal, pour into insulating oil and upwards promote insulating oil interface, until insulating oil interfacial level is promoted to the more than 1/2nd of prefabricated fuel tank height, insulating oil interfacial level surpasses casing flange horizontal plane, on the casing flange of direct current cables terminal, form a Faraday cage, protection direct current cables terminal, avoid under DC electric field or extra-high-voltage alternating current electric field action, the air interface of direct current cables terminal produces electric discharge phenomena.
2. according to the direct current cables terminal interface of oil and gas lifting device described in claim 1, it is characterized in that: the outlet rod place of drawing, center of described top cover adds a clamp nut, strengthen the sealing of top cover and outlet rod junction.
3. direct current cables terminal interface of oil and gas lifting device according to claim 1, is characterized in that: the upper surface that is connected to casing flange in the chamber of described prefabricated fuel tank is provided with the detachable pressure restraining element for pressure buffer.
4. according to the direct current cables terminal interface of oil and gas lifting device described in claim 1 or 3, it is characterized in that: described prefabricated fuel tank profile is arranged to spherical as required, its inner pressure restraining element is that selectivity is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175585.6U CN203787928U (en) | 2014-04-14 | 2014-04-14 | Oil gas interface lifting device of DC cable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175585.6U CN203787928U (en) | 2014-04-14 | 2014-04-14 | Oil gas interface lifting device of DC cable terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203787928U true CN203787928U (en) | 2014-08-20 |
Family
ID=51324082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420175585.6U Withdrawn - After Issue CN203787928U (en) | 2014-04-14 | 2014-04-14 | Oil gas interface lifting device of DC cable terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203787928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887757A (en) * | 2014-04-14 | 2014-06-25 | 上海三原电缆附件有限公司 | Direct-current electric cable terminal oil-gas interface lifting device |
-
2014
- 2014-04-14 CN CN201420175585.6U patent/CN203787928U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887757A (en) * | 2014-04-14 | 2014-06-25 | 上海三原电缆附件有限公司 | Direct-current electric cable terminal oil-gas interface lifting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20160622 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |