CN203674680U - Sealing anti-flood cross interconnection grounding box - Google Patents
Sealing anti-flood cross interconnection grounding box Download PDFInfo
- Publication number
- CN203674680U CN203674680U CN201320865415.6U CN201320865415U CN203674680U CN 203674680 U CN203674680 U CN 203674680U CN 201320865415 U CN201320865415 U CN 201320865415U CN 203674680 U CN203674680 U CN 203674680U
- Authority
- CN
- China
- Prior art keywords
- cone
- conic
- copper bar
- cable
- seat
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Cable Accessories (AREA)
Abstract
The utility model relates to a sealing anti-flood cross interconnection grounding box and aims to realize properties of excellent sealing performance, novel structure and simple operation. According to the technical scheme, the sealing anti-flood cross interconnection grounding box comprises a box body, a cross interconnection device and a grounding copper bar, wherein a wire incoming end of the cross interconnection device is provided with three sets of wiring terminals, the three sets of wiring terminals are respectively connected with three coaxial cables in one-to-one correspondence, each set of wiring terminals comprise an inner conductor connection column and an outer conductor compaction mechanism, an inner conic seat and an outer conic holding-on device are respectively provided with a wiring through hole, the wiring through hole of the inner conic seat is provided with an inner conic face, an outer wall of the outer conic holding-on device is matched with the inner conic face and is inserted into the inner conic seat from one side of the conic bottom of the inner conic face, the coaxial cables are inserted into the inner conic seat from one side of the conic top of the inner conic face, a metal protection layer of the coaxial cables is fixed between the inner conic face of the inner conic seat and the outer wall of the outer conic holding-on device, and the outer conic holding-on device is provided with a flange.
Description
Technical field
The utility model relates to a kind of grounding box, is specifically related to a kind ofly can seal flood control and can realize induced potential in effective and rapid reduction single-core power cables metal sheath and the cross interconnected grounding box of circulation by cross interconnected transposition again.
Background technology
In the electric power system of 35kV and above, because transmission capacity is large, cable adopts single cored structure mostly.And in the interchange transmission system that single-core cable forms, the relation of cable conductor and metal sheath can be regarded an air-core transformer as, cable conductor is equivalent to winding one time, metal sheath is equivalent to secondary winding, in the alternating magnetic field of metal sheath in conductor current, therefore metal sheath can produce certain induced potential.These induction overvoltages will puncture cable jacket, cause cable metal sheath multipoint earthing, form circulation, thereby reduce the ampacity of cable, have reduced the useful life of cable.
Electric power safety rules regulation: the non-charged metal shell of electric equipment is necessary ground connection all, and therefore the metal sheath of power cable also must ground connection.In the time that the long distance of single-core power cables is laid, need be by cable line segmentation, metal sheath is cross interconnected, threephase cable metal sheath is replaced continuously simultaneously again, and realizing and arranging symmetrical threephase cable metal sheath current potential vector sum is zero.
At present, there is box house water inlet, enter the phenomenon such as tide and condensation in traditional cross interconnected grounding box, causes earthing failure, and cable metal sheath induced current is large.And there is the shortcomings such as volume is large, installation is inconvenient in traditional cross interconnected case.
Utility model content
The utility model object is the deficiency overcoming in above-mentioned background technology, and a kind of sealing property excellence, structure novel, cross interconnected grounding box simple to operate are provided.
For realizing above object, the utility model has adopted following technical scheme:
The cross interconnected grounding box of a kind of sealing flood control type, comprise casing, be arranged on cross connect apparatus and the grounding copper bar of box house, the end of incoming cables of cross connect apparatus is provided with three groups of binding posts, three groups of binding posts also connect with three coaxial cables are corresponding one by one respectively, it is characterized in that: every group of binding post comprises an inner wire joint pin and an outer conductor hold-down mechanism, on inner wire joint pin, offer connecting hole, outer conductor hold-down mechanism is made up of inner cone seat and outer cone occluder, inner cone seat and outer cone occluder all offer the excessively line three-way hole coaxial with described connecting hole, the line three-way hole of crossing of inner cone seat is shaped with inner conical surface, the outer wall of outer cone occluder mates with described inner conical surface and inserts inner cone seat from a side at the bottom of the cone of inner conical surface, coaxial cable inserts inner cone seat from the vertex of a cone one side of inner conical surface, the metal sheath of coaxial cable is fixed between the inner conical surface of inner cone seat and the outer wall of outer cone occluder, described outer cone occluder is provided with flange page, this flange page is positioned at the bottom of the cone of inner conical surface a side and is connected with described inner cone seat by bolt.
Described cross connect apparatus comprises first, second, third insulation support plate being fixed in casing; The front of the first insulation support plate is fixed with No. one and connects copper bar, connect on copper bar for this No. one three cable protective layer protectors are installed, described grounding copper bar is positioned at the back side of the cable protective layer protector in centre position, and this grounding copper bar is also provided with an earth terminal that connects earth cable inner wire;
On described the second insulation support plate, be fixed with three inner wire joint pins, three inner wire joint pins are corresponding one by one with three cable protective layer protectors, mutually between corresponding inner wire joint pin and cable protective layer protector, are connected copper bar No. two by one and connect;
On described the 3rd insulation support plate, be fixed wtih described three groups of binding posts, between three inner cone seats of three groups of binding posts and described three inner wire joint pins, be connected copper bar coordinated transposition for No. three by three and connect.
The opening part of described casing is provided with a circle and extends frame, this prolongation frame is fixed with one deck sealing gasket towards the one side of case lid, described sealing gasket joins end to end and the aperture arrangement of around tank, and sealing gasket is shaped with at least one towards the one side of case lid and stretches in the same way and end to end seal bead with sealing gasket.
Described grounding copper bar is with to be connected copper bar No. one orthogonal.
Described casing is provided with the inlet wire pipe of three coaxial cables and described earth cable.
The beneficial effects of the utility model are:
1, regulate outer cone occluder to stretch into the length of inner cone seat by bolt, thereby the metal sheath of coaxial cable is pressed on the inner conical surface of inner cone seat, reduced impedance thereby realize circumference contact, electric property is more reliable;
2, grounding copper bar is arranged on the centre position of the first insulation support plate, with respect to existing cross interconnected case, grounding copper bar is arranged on to casing side, can effectively reduce volume, easy for installation;
Can there is strain in the pressure that 3, sealing gasket and seal bead thereof are subject to case lid, on sealing contact surface, cause contact, prevent the invasion of moisture, moisture, thereby guarantee the sealing that cross interconnected grounding box is good, avoid box house water inlet, enter tide and condensation.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 be in Fig. 1 A-A to sectional structure schematic diagram.
Fig. 3 is the connection diagram of outer conductor hold-down mechanism and coaxial cable.
Fig. 4 is the main TV structure schematic diagram of sealing ring.
Fig. 5 be in Fig. 4 B-B to sectional structure schematic diagram.
Fig. 6 is the enlarged diagram of C portion in Fig. 5.
Embodiment
Below in conjunction with specification figure, the utility model is described in further detail, but the utility model is not limited to following examples.
The cross interconnected grounding box of a kind of sealing flood control type, comprise casing 13, the cross connect apparatus that is arranged on box house and grounding copper bar 9 that stainless steel is made, the end of incoming cables of cross connect apparatus is provided with three groups of binding posts, and three groups of binding posts also connect with three coaxial cables are corresponding one by one respectively.Casing is provided with the inlet wire pipe 15 of three coaxial cables and described earth cable.
Every group of binding post comprises an inner wire joint pin and an outer conductor hold-down mechanism.On inner wire joint pin, offer connecting hole, for being connected with the inner wire 8-2 of coaxial cable 8.Outer conductor hold-down mechanism is made up of inner cone seat 11 and outer cone occluder 12, inner cone seat and outer cone occluder all offer the excessively line three-way hole 12-1 coaxial with described connecting hole, the line three-way hole of crossing of inner cone seat is shaped with inner conical surface 11-1, the outer wall of outer cone occluder mates with described inner conical surface and inserts inner cone seat from a side (right side of Fig. 3) at the bottom of the cone of inner conical surface, coaxial cable 8 inserts inner cone seat from the vertex of a cone one side (left side of Fig. 3) of inner conical surface, the metal sheath 8-1 of coaxial cable is fixed between the inner conical surface of inner cone seat and the outer wall of outer cone occluder, the inner wire 8-2 of coaxial cable is fixed in the connecting hole of described inner wire joint pin from crossing line three-way hole passes of outer cone occluder, outer cone occluder is provided with flange page 12-2, this flange page is arranged in a side at the bottom of the cone of inner conical surface, the logical described bolt of crossing of this flange page is connected with described inner cone seat, outer cone occluder can be pressed in inner cone seat, thereby metal sheath is pressed on inner conical surface by bolt.
Described cross connect apparatus comprises first, second, third insulation support plate being fixed in casing.The front of the first insulation support plate 1 is fixed with No. one and connects copper bar 5; connect on copper bar for this No. one three cable protective layer protectors 4 are installed; described grounding copper bar is positioned at the back side of the cable protective layer protector in centre position; grounding copper bar and being connected between copper bar for No. one is bolted; this grounding copper bar also connects an earth terminal 9-1 who connects earth cable inner wire, and described grounding copper bar is with to be connected copper bar No. one orthogonal.
On described the second insulation support plate 2, be fixed with three inner wire joint pin 10(conventional components, carry outer-hexagonal bolt 18), three inner wire joint pins are corresponding one by one with three cable protective layer protectors, mutually between corresponding inner wire joint pin and cable protective layer protector, are connected copper bar 6 for No. two by one and connect; The one end that is each cable protective layer protector connects copper bar connection for No. one, and the other end is connected copper bar connection for No. two with one.
On described the 3rd insulation support plate 3, be fixed wtih described three groups of binding posts, between three inner cone seats of three groups of binding posts and described three inner wire joint pins, being connected copper bar 7 coordinated transpositions for No. three by three connects, this coordinated transposition is connected to conventional connected mode, identical with existing grounding box, do not describe in detail at this.
The back side of described casing is provided with installs sole 16, the opening part in casing front is provided with a circle and extends frame 14, this prolongation frame is fixed with one deck sealing gasket 17(towards the one side of case lid and adopts silicon rubber to make), described sealing gasket joins end to end and the aperture arrangement of around tank, sealing gasket towards the one side of case lid be shaped with at least one stretch in the same way with sealing gasket and end to end seal bead 17-1(figure in show two convex tendons).Stainless steel extends frame, sealing gasket and case lid all equal number, corresponding coaxial circular hole between two.Three is fixed by plain washer, spring washer and bolt, the silicone rubber seal gasket generation strain that is under pressure, on sealing contact surface, cause contact, prevented the invasion of moisture, moisture, thereby guaranteed that cross interconnected grounding box has good sealing.
Cross connect apparatus in the utility model replaces continuously by three described coaxial cables and the metal sheath of three cables, realizing and arranging symmetrical threephase cable metal sheath current potential vector sum is zero, the connection of cross connect apparatus and operation principle are existing routine techniques, identical with existing grounding box, do not describe in detail at this.
In structure of the present utility model; inner wire joint pin 10 in every group of binding post and the inner cone seat 11 of outer conductor hold-down mechanism and outer cone occluder 12 are on same axle center; and between inner wire joint pin 10 and inner cone seat 11, outer cone occluder 12, must insulate, therefore protect the cable of metallic sheath need adopt coaxial cable.
When use, stripping coaxial cable, exposes inner wire and the outer conductor of given size.Coaxial cable is entered to casing through inlet wire pipe 15, and the link position first internal and external conductor being inserted in respectively separately carries out pre-connection.The inner wire that exposes insert inner wire joint pin 10 interior after, tighten outer-hexagonal bolt 18 fixing; Coaxial cable outer conductor is evenly distributed on the conical surface of inner cone seat 11 and outer cone occluder 12, the bolt of clamp flange page.The earth cable connecting with ground network can adopt DYJV cable also can adopt 1kV cable.After three coaxial cables have been connected with earth cable, all need to smear one deck silicone grease on sealing gasket two sides, build case lid, all bolts are tightened at diagonal angle, with 15 mouthfuls of the wrapped good inlet wire pipes of adhesive waterproof tape, have shunk pyrocondensation oversheath.
Claims (5)
1. the cross interconnected grounding box of sealing flood control type, comprise casing (13), the cross connect apparatus that is arranged on box house and grounding copper bar (9), the end of incoming cables of cross connect apparatus is provided with three groups of binding posts, three groups of binding posts also connect with three coaxial cables (8) are corresponding one by one respectively, it is characterized in that: every group of binding post comprises an inner wire joint pin (10) and an outer conductor hold-down mechanism, on inner wire joint pin, offer connecting hole, outer conductor hold-down mechanism is made up of inner cone seat (11) and outer cone occluder (12), inner cone seat and outer cone occluder all offer the excessively line three-way hole (12-1) coaxial with described connecting hole, the line three-way hole of crossing of inner cone seat is shaped with inner conical surface (11-1), the outer wall of outer cone occluder mates with described inner conical surface and inserts inner cone seat from a side at the bottom of the cone of inner conical surface, coaxial cable inserts inner cone seat from the vertex of a cone one side of inner conical surface, the metal sheath (8-1) of coaxial cable is fixed between the inner conical surface of inner cone seat and the outer wall of outer cone occluder, described outer cone occluder is provided with flange page (12-2), this flange page is positioned at the bottom of the cone of inner conical surface a side and is connected with described inner cone seat by bolt.
2. the cross interconnected grounding box of a kind of sealing flood control type according to claim 1, is characterized in that: described cross connect apparatus comprises first, second, third insulation support plate being fixed in casing; The front of the first insulation support plate (1) is fixed with No. one and connects copper bar (5), connect on copper bar for this No. one three cable protective layer protectors (4) are installed, described grounding copper bar (9) is positioned at the back side of the cable protective layer protector in centre position, and this grounding copper bar is also provided with an earth terminal (9-1) that connects earth cable inner wire;
On described the second insulation support plate (2), be fixed with three inner wire joint pins (10), three inner wire joint pins are corresponding one by one with three cable protective layer protectors, mutually between corresponding inner wire joint pin and cable protective layer protector, are connected copper bar (6) for No. two by one and connect;
On described the 3rd insulation support plate (3), be fixed wtih described three groups of binding posts, between three inner cone seats of three groups of binding posts and described three inner wire joint pins, be connected copper (7) row coordinated transposition for No. three by three and connect.
3. the cross interconnected grounding box of a kind of sealing flood control type according to claim 1 and 2, it is characterized in that: the opening part of described casing is provided with a circle and extends frame (14), this prolongation frame is fixed with one deck sealing gasket (17) towards the one side of case lid, described sealing gasket joins end to end and the aperture arrangement of around tank, and sealing gasket is shaped with at least one towards the one side of case lid and stretches in the same way and end to end seal bead (17-1) with sealing gasket.
4. the cross interconnected grounding box of a kind of sealing flood control type according to claim 3, is characterized in that: described grounding copper bar is with to be connected copper bar No. one orthogonal.
5. the cross interconnected grounding box of a kind of sealing flood control type according to claim 4, is characterized in that: described casing is provided with the inlet wire pipe (15) of three coaxial cables and described earth cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865415.6U CN203674680U (en) | 2013-12-25 | 2013-12-25 | Sealing anti-flood cross interconnection grounding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865415.6U CN203674680U (en) | 2013-12-25 | 2013-12-25 | Sealing anti-flood cross interconnection grounding box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674680U true CN203674680U (en) | 2014-06-25 |
Family
ID=50970935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320865415.6U Expired - Fee Related CN203674680U (en) | 2013-12-25 | 2013-12-25 | Sealing anti-flood cross interconnection grounding box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674680U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485628A (en) * | 2014-12-09 | 2015-04-01 | 国家电网公司 | Integrated earthing box for high-voltage cable circuit |
| CN105429093A (en) * | 2015-12-15 | 2016-03-23 | 国网浙江省电力公司温州供电公司 | Earth box capable of achieving live-line switching |
| WO2016190824A1 (en) * | 2015-05-28 | 2016-12-01 | Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ | Heavy-duty and water-proof link boxes for cross bonding of extra high voltage cable systems |
| CN110288888A (en) * | 2019-07-30 | 2019-09-27 | 国网上海市电力公司 | A kind of remodeling method of cable sheath grounding circulation simulator and the case that replaces |
-
2013
- 2013-12-25 CN CN201320865415.6U patent/CN203674680U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485628A (en) * | 2014-12-09 | 2015-04-01 | 国家电网公司 | Integrated earthing box for high-voltage cable circuit |
| CN104485628B (en) * | 2014-12-09 | 2016-04-20 | 国家电网公司 | Voltage Cable Lines Construction Integral earthing case |
| WO2016190824A1 (en) * | 2015-05-28 | 2016-12-01 | Em Elektri̇k Malzemeleri̇ Yükleni̇m Sanayi̇ Ti̇caret Anoni̇m Şi̇rketi̇ | Heavy-duty and water-proof link boxes for cross bonding of extra high voltage cable systems |
| CN105429093A (en) * | 2015-12-15 | 2016-03-23 | 国网浙江省电力公司温州供电公司 | Earth box capable of achieving live-line switching |
| CN110288888A (en) * | 2019-07-30 | 2019-09-27 | 国网上海市电力公司 | A kind of remodeling method of cable sheath grounding circulation simulator and the case that replaces |
| CN110288888B (en) * | 2019-07-30 | 2024-01-30 | 国网上海市电力公司 | Cable sheath grounding circular flow simulation device and transformation method of transposition box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203674680U (en) | Sealing anti-flood cross interconnection grounding box | |
| CN202957567U (en) | Anti-electric-shock intersecting interconnecting protection box | |
| CN208939545U (en) | A kind of cross-connect grounding box of high leakproofness | |
| CN108365593A (en) | A kind of cross interconnected anti-mistaking of high-tension cable connects cross interconnected case | |
| CN101640403A (en) | Cable insulated joint | |
| CN201388026Y (en) | Bus of fully isolated and shielded metal conductive tube and bus connector | |
| CN107591720A (en) | Intelligent substation on integrated post | |
| CN204809824U (en) | Shrinkage cable terminal | |
| CN206237115U (en) | Buried cable sheath grounding box | |
| CN202840456U (en) | Cross interconnection box used in single-core power cable | |
| CN202949202U (en) | Main body of intermediate connector of cross-linked cable and novel intermediate connector formed by same | |
| CN203205820U (en) | Cable switch box | |
| CN205789263U (en) | A kind of high voltage power cable | |
| CN208142814U (en) | A kind of cross interconnected anti-mistaking of high-tension cable connects cross interconnected case | |
| CN110661229B (en) | Single-core cable transposition connecting device | |
| CN204857994U (en) | 35kV cable metallic sheath circumscribed ground protection case | |
| CN202712553U (en) | Shielded type switch cabinet upper outgoing bus connector | |
| CN207518165U (en) | Intelligent substation on integrated column | |
| CN215264169U (en) | OPGW optical cable down-leading multi-point flexible grounding complete equipment | |
| CN108471072A (en) | Intelligent power distribution integration apparatus | |
| CN216312658U (en) | Cross interconnection box from both sides inlet wire | |
| CN203839517U (en) | A connection terminal for copper-steel grounding bodies | |
| CN216312650U (en) | Protection grounding box from both sides inlet wire | |
| CN203632182U (en) | Lightning protection device of 20kV overhead line | |
| CN214543580U (en) | Cable sheath cross interconnection protection grounding box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20211225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |