CN109038467A - A kind of quick transfer box of 0.4kV cable - Google Patents
A kind of quick transfer box of 0.4kV cable Download PDFInfo
- Publication number
- CN109038467A CN109038467A CN201810709721.8A CN201810709721A CN109038467A CN 109038467 A CN109038467 A CN 109038467A CN 201810709721 A CN201810709721 A CN 201810709721A CN 109038467 A CN109038467 A CN 109038467A
- Authority
- CN
- China
- Prior art keywords
- cable
- copper wire
- nut
- inlet wire
- connecting terminal
- 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.)
- Granted
Links
- 238000012546 transfer Methods 0.000 title claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 22
- 239000010935 stainless steel Substances 0.000 claims abstract description 22
- 238000009422 external insulation Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000005060 rubber Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000000428 dust Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
Landscapes
- Cable Accessories (AREA)
Abstract
The present invention provides a kind of quick transfer box of 0.4kV cable, including box main body of transferring, inlet wire cable plug device and outlet cable attachment device, inlet wire cable plug device includes four inlet wire cable connecting terminals, each inlet wire cable connecting terminal respectively includes wall bushing and connecting terminal box, it is arranged equipped with the first copper wire one end of wall bushing, the other end is arranged equipped with the second copper wire, second copper wire row's connection connecting terminal box, the two sides of connecting terminal box offer through-hole respectively, the second copper wire row is wherein inserted into a side through hole, stainless steel tube is arranged in another side through hole, line nose is equipped in connecting terminal box, second copper wire row is fixedly connected with line nose by contact screw, line nasal portion protrudes into stainless steel tube.The present invention provides the quick transfer boxes of 0.4kV cable that one kind can quickly establish good electrical connection and fast quick-recovery cable insulation.
Description
Technical field
The present invention relates to technical field of electric power more particularly to a kind of quick transfer boxes of 0.4kV cable.
Background technique
Cell power supply system is depressured box-type substation using beautiful (Europe) formula, has two voltage of 10kV and 0.4kV etc.
Grade, 10kV mono- flank the 10kV bus with the 110kV substation passed through beside cell, and the side 0.4kV is mainly used for community user
And the electricity consumption of cell public place.
Needed for development with society and in order to meet distribution line, equipment operating standard, need to become original case
Capacity is replaced or is increased, in the prior art by bypassing one section of cable run in parallel on the route charged originally come generation
After its operation, one section of route for disconnecting former operation keeps its not charged as behind non-Electric region, becomes to case and carries out interruption maintenance more
It changes jobs.It but during due to transit cable, should guarantee that the contact of joint conductor is good, while guarantee to have transferred again
At the insulation performance of rear outside, therefore cable switching needs to expend about 6-8 hour, needs to have a power failure to user in this time,
Have lost Social benefit and economic benefit.
Summary of the invention
Good electrical connection can be quickly established the purpose of the present invention is to provide one kind and fast quick-recovery cable is exhausted
The quick transfer box of 0.4kV cable of edge.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of quick transfer box of 0.4kV cable, including switching box main body, inlet wire cable plug device are connected with outlet cable
Device, the inlet wire cable plug device and the outlet cable attachment device are electrically connected, the inlet wire cable plug device
Including four inlet wire cable connecting terminals, each inlet wire cable connecting terminal respectively includes wall bushing and connecting terminal
Box sets there are four mounting hole in the one side wall of the switching box main body, is arranged with corresponding institute respectively in each mounting hole
Wall bushing is stated, one end of the wall bushing is arranged equipped with the first copper wire, and the other end is arranged equipped with the second copper wire, second copper wire
Row connects the connecting terminal box, and the two sides of the connecting terminal box offer through-hole respectively, wherein being inserted into institute in a side through hole
The second copper wire row is stated, stainless steel tube is arranged in another side through hole, is equipped with line nose, second bronze medal in the connecting terminal box
Line row is fixedly connected with the line nose by contact screw, and the line nasal portion protrudes into the stainless steel tube.
Further, the wall bushing includes conducting rod, internal shield, external insulation layer and connecting flange, described to lead
Electric pole is electrically connected the first copper wire row and second copper wire row, and the internal shield is arranged in the conducting rod periphery,
The internal shield is semiconductive material shielded layer, and first copper wire row part is arranged in the internal shield, described the
Two copper wire row part is arranged in the internal shield, and the connecting flange is set on the internal shield, the external insulation
Layer is arranged in the internal shield periphery and the two sides of the connecting flange is arranged in.
Further, the stainless steel tube is equipped with internal screw thread at nozzle, and the stainless steel tube is threadedly coupled at nozzle
There is sealing element, the sealing element includes nut and pipe fitting, and one end of the pipe fitting is threadedly coupled with the stainless steel tube, institute
The other end for stating pipe fitting is threadedly coupled with the nut.
Further, the nut includes nut lid and coupling nut, is equipped with and the spiral shell in the middle part of the coupling nut
The through-hole of cap mates, the nut lid is tapered, and the middle part of the nut lid is equipped with through-hole.
Further, the nut lid is ethylene propylene diene rubber lid.
After adopting the above technical scheme, the present invention has the advantage that
1, the quick transfer box of 0.4kV cable provided by the invention is connected by inlet wire cable plug device with outlet cable
Device plays the role of the quick switching of the multichannel 0.4KV outlet cable to the box-type substation inlet wire cable inputted and output,
To need to have a power failure originally 6-8 hours power failure operation time become half an hour have a power failure in complete；By transfer box to inlet wire cable
It transfers with outlet cable, avoids the problem of outlet cable length not enough turns power supply.Four inlet wire cable connecting terminals point
It Lian Jie not A phase, B phase, C phase three-phase electricity cable and zero curve.When inlet wire cable is transferred, by the insertion of the head of inlet wire cable it is corresponding into
In line cable connecting terminal, the head of inlet wire cable is connect after entering stainless steel tube with line nose, so that inlet wire cable and line nose
Son and wall bushing are electrically connected, and electrical connection speed is fast, contacts, and greatly reduce the power failure operation time.In addition, wearing
Wall sleeve and connecting terminal box have good exterior insulation performance, guarantee the insulation performance of outside after the completion of the switching of inlet wire cable
Fast quick-recovery.Connecting terminal box can also play the role of the water proof and dust proof of its inner body.
2, the internal shield of wall bushing in the prior art is arranged in the middle part of conducting rod, in the both ends of conducting rod are exposed
The both ends of shielded layer, still, between conducting rod both ends and external insulation layer, the copper wire at conducting rod both ends row external insulation layer between easily
Air gap is formed, electric field concentration is will cause, shelf depreciation will be caused.Conducting rod is coated in internal shield by the present invention completely, and
Copper wire row part is coated in internal shield, on the one hand, is solved the connectivity problem of copper wire row and conducting rod, is not needed connection zero
Part connects copper wire row and conducting rod；On the other hand, internal shield is well contacted with conducting rod equipotential and with external insulation layer, is avoided
Shelf depreciation occurs between conducting rod both ends and external insulation layer, between the copper wire at conducting rod both ends row and external insulation layer.
3, sealing element is set in the nozzle of stainless steel tube, turns to avoid because caused by water and dust enter switching box main body
Connect case damage.And be all made of and be threadedly coupled between pipe fitting and stainless steel tube, pipe fitting and nut, so that having for sealing element is good
Good sealing performance.
4, nut lid is elastomer, and ethylene propylene diene rubber is the preferred material of nut lid, and nut lid is not stressing
When, the through-hole at tip, which is in, shrinks closed state.When inlet wire cable is inserted into stainless steel tube, first nut lid is covered in inlet wire electricity
The end of cable, the through-hole stress at nut lid tip is opened, then inlet wire cable is inserted into nut, nut lid with connect
Nut matches, and continues into inlet wire cable until inlet wire cable is inserted into line nose, in the process, inlet wire cable is to nut
Lid acts on a frictional force, and nut lid will generate a pressure under the action of this frictional force to coupling nut, due to nut cap
The contact surface of body and coupling nut is inclined-plane, and in coupling nut under the reaction force of nut lid, nut lid is electric by inlet wire
Cable package is tight, so that water and dust cannot be introduced into transfer box after the access of inlet wire cable.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is a kind of structural schematic diagram of the quick transfer box of 0.4kV cable in the present invention.
Fig. 2 is a kind of side view of the quick transfer box of 0.4kV cable in the present invention.
Fig. 3 is the structural schematic diagram of inlet wire cable plug device in the present invention.
Fig. 4 is the structural schematic diagram of the nut in the present invention in the sealing element of inlet wire cable plug device.
Marked the names of the parts are as follows in figure:
1, switching box main body；101, chamber door；102, mounting hole；2, inlet wire cable plug device；201, conducting rod；202, interior
Shielded layer；203, connecting flange；204, external insulation layer；205, the first copper wire is arranged；206, the second copper wire is arranged；207, stainless steel tube；
208, line nose；209, contact screw；210, nut；2101, nut lid；2102, coupling nut；211, pipe fitting；3, go out
Line cable connecting arrangement.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, the present invention provides a kind of quick transfer box of 0.4kV cable, including switching box main body 1, inlet wire
Cable plug device 2 and outlet cable attachment device 3.
Box main body 1 of transferring is a closing shell, and switching box main body 1 includes chamber door 101.Inlet wire cable plug device 2 connects
Main power source inlet wire cable and backup power source inlet wire cable, wherein main power source by utility grid transformer export, backup power source by
Generator output.Outlet cable attachment device 3 connects each outlet cable.Inlet wire cable plug device 2 connect dress with outlet cable
Set 3 electric connections.
Inlet wire cable plug device 2 includes four inlet wire cable connecting terminals, and four inlet wire cable connecting terminals connect respectively
Connect A phase, B phase, C phase three-phase electricity cable and zero curve.Inlet wire cable connecting terminal includes wall bushing and connecting terminal box.Transfer box
It is set in the one side wall of main body 1 there are four mounting hole 102, is arranged with corresponding wall bushing respectively in each mounting hole 102, it is through walls
Casing is fixedly connected by connecting flange 203 with switching box main body 1.
As shown in figure 3, inlet wire cable plug device 2 includes four inlet wire cable connecting terminals, inlet wire cable connecting terminal
Including wall bushing and connecting terminal box.
Wall bushing includes conducting rod 201, the internal shield 202 that 201 periphery of conducting rod is arranged in, is set in internal shield
Connecting flange 203 on 202 and 202 periphery of internal shield is set and the external insulation layer of 203 two sides of connecting flange is set
204.One end of conducting rod 201 is electrically connected with the first copper wire row 205, and the other end is electrically connected with the second copper wire row 206, the first copper wire
It arranges 205 parts to be arranged in internal shield 202, the second copper wire is arranged 206 parts and is arranged in internal shield 202.Due to conducting rod
201 are coated on completely in internal shield 202, and the copper wire row part at 201 both ends of conducting rod is coated in internal shield 202, and one
Aspect solves the connectivity problem of copper wire row and conducting rod 201, does not need union piece connection copper wire row and conducting rod 201；Separately
On the one hand, it internal shield 202 and 201 equipotential of conducting rod and well contacts, is avoided in conducting rod 201 with external insulation layer 204
Shelf depreciation occurs between both ends and external insulation layer 204, between the copper wire at 201 both ends of conducting rod row and external insulation layer 204.
The two sides of connecting terminal box offer through-hole respectively, wherein being inserted into the second copper wire row 206, the other side in a side through hole
It is arranged with stainless steel tube 207 in through-hole, line nose 208 is equipped in connecting terminal box, the second copper wire row 206 and line nose 208 are logical
It crosses contact screw 209 to be fixedly connected, line nose 208 partially protrudes into stainless steel tube 207.
Stainless steel tube 207 is equipped with thread groove in internal wall of pipe orifice, and stainless steel tube 207 is threaded with sealing element at nozzle,
It is damaged to avoid the transfer box because caused by water and dust enter switching box main body 1.Sealing element includes nut 210 and pipe fitting
211, one end of pipe fitting 211 is threadedly coupled with stainless steel tube 207, and the other end of pipe fitting 211 is threadedly coupled with nut 210.
As shown in figure 4, nut 210 includes nut lid 2101 and coupling nut 2102, nut lid 2101 is silica gel lid
Body, nut lid 2101 is tapered, and the middle part of nut lid 2101 is equipped with through-hole.Since nut lid 2101 is elastomer, spiral shell
For cap body 2101 when not stressing, the through-hole at 2101 tip of nut lid, which is in, shrinks closed state.Inlet wire cable is inserted into not
Become rusty steel pipe 207 when, the through-hole stress first by 2101 sets of the nut lid ends in inlet wire cable, at 2101 tip of nut lid
It opens, then inlet wire cable is inserted into nut 210, nut lid 2101 is matched with coupling nut 2102, continues into inlet wire
Cable is until inlet wire cable is inserted into line nose 208, and in the process, inlet wire cable is to one friction of the effect of nut lid 2101
Power, nut lid 2101 will generate a pressure to coupling nut 2102 under the action of this frictional force, due to nut lid 2101
It is inclined-plane with the contact surface of coupling nut 2101, in coupling nut 2102 under the reaction force of nut lid 2101, nut cap
Body 2101 wraps up inlet wire cable tightly, so that water and dust cannot be introduced into switching box main body 1 after the access of inlet wire cable.
In addition to above preferred embodiment, there are other embodiments of the invention, and those skilled in the art can be according to this
Invention makes various changes and modifications, and as long as it does not depart from the spirit of the invention, should belong to appended claims of the present invention and determines
The range of justice.
Claims (5)
1. a kind of quick transfer box of 0.4kV cable, which is characterized in that including switching box main body, inlet wire cable plug device and go out
Line cable connecting arrangement, the inlet wire cable plug device and the outlet cable attachment device are electrically connected, the inlet wire electricity
Cable plug-in and pull-off device include four inlet wire cable connecting terminals, each inlet wire cable connecting terminal respectively include wall bushing and
Connecting terminal box sets there are four mounting hole in the one side wall of the switching box main body, is arranged with respectively in each mounting hole
One end of the corresponding wall bushing, the wall bushing is arranged equipped with the first copper wire, and the other end is arranged equipped with the second copper wire, described
Second copper wire row connects the connecting terminal box, and the two sides of the connecting terminal box offer through-hole respectively, wherein a side through hole
Middle insertion second copper wire is arranged, and stainless steel tube is arranged in another side through hole, is equipped with line nose, institute in the connecting terminal box
It states the second copper wire row to be fixedly connected with the line nose by contact screw, the line nasal portion protrudes into the stainless steel tube
It is interior.
2. a kind of quick transfer box of 0.4kV cable according to claim 1, which is characterized in that the wall bushing includes
Conducting rod, internal shield, external insulation layer and connecting flange, the conducting rod are electrically connected the first copper wire row and described the
Two copper wire row, in the conducting rod periphery, the internal shield is semiconductive material shielded layer, described for the internal shield setting
First copper wire row part is arranged in the internal shield, and the second copper wire row part is arranged in the internal shield, institute
It states connecting flange to be set on the internal shield, the external insulation layer setting is in the internal shield periphery and is arranged described
The two sides of connecting flange.
3. a kind of quick transfer box of 0.4kV cable according to claim 1, which is characterized in that the stainless steel tube is in pipe
Internal screw thread is equipped at mouthful, the stainless steel tube is threaded with sealing element at nozzle, and the sealing element includes that nut and pipe connect
Head, one end of the pipe fitting are threadedly coupled with the stainless steel tube, and the other end of the pipe fitting and the nut screw thread connect
It connects.
4. a kind of quick transfer box of 0.4kV cable according to claim 3, which is characterized in that the nut includes nut
Lid and coupling nut, the coupling nut middle part are equipped with the through-hole with the nut cap mates, and the nut lid is in
The middle part of taper, the nut lid is equipped with through-hole.
5. a kind of quick transfer box of 0.4kV cable according to claim 4, which is characterized in that the nut lid is three
First EP rubbers lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709721.8A CN109038467B (en) | 2018-07-02 | 2018-07-02 | 0.4kV cable quick transfer box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709721.8A CN109038467B (en) | 2018-07-02 | 2018-07-02 | 0.4kV cable quick transfer box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109038467A true CN109038467A (en) | 2018-12-18 |
| CN109038467B CN109038467B (en) | 2023-11-28 |
Family
ID=65521316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810709721.8A Active CN109038467B (en) | 2018-07-02 | 2018-07-02 | 0.4kV cable quick transfer box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109038467B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635443A (en) * | 2019-10-09 | 2019-12-31 | 张良 | Independent power supply standby switching device for special building |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060014462A (en) * | 2004-08-11 | 2006-02-16 | 양희성 | Electric branch box |
| CN201038669Y (en) * | 2007-06-06 | 2008-03-19 | 楼小龙 | Seal ring possessed covered joint and fastening type steel conduit and pipe fitting connection device |
| EP1978616A1 (en) * | 2007-04-06 | 2008-10-08 | Ksb S.A.S | Wall bushing and manufacturing method thereof |
| CN201918679U (en) * | 2010-12-01 | 2011-08-03 | 福建省电力有限公司福州电业局 | 10kV cable transfer box |
| CN203312730U (en) * | 2013-06-14 | 2013-11-27 | 北京合纵科沃尔电力科技有限公司 | High-voltage switchgear cable-wiring wall-bushing connection structure |
| CN103872637A (en) * | 2012-12-10 | 2014-06-18 | 中国核动力研究设计院 | Quick cable connection and sealing device |
| CN206116655U (en) * | 2016-08-29 | 2017-04-19 | 镇江市三维电加热器有限公司 | High temperature heavy current lead -out wire device |
| CN206250718U (en) * | 2016-12-21 | 2017-06-13 | 国网宁夏电力公司银川供电公司 | The transfer box that bypass cable fast insert-pull head is connected with user's side terminal |
| CN208316265U (en) * | 2018-07-02 | 2019-01-01 | 国网浙江慈溪市供电有限公司 | A kind of quick transfer box of 0.4kV cable |
-
2018
- 2018-07-02 CN CN201810709721.8A patent/CN109038467B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060014462A (en) * | 2004-08-11 | 2006-02-16 | 양희성 | Electric branch box |
| EP1978616A1 (en) * | 2007-04-06 | 2008-10-08 | Ksb S.A.S | Wall bushing and manufacturing method thereof |
| CN201038669Y (en) * | 2007-06-06 | 2008-03-19 | 楼小龙 | Seal ring possessed covered joint and fastening type steel conduit and pipe fitting connection device |
| CN201918679U (en) * | 2010-12-01 | 2011-08-03 | 福建省电力有限公司福州电业局 | 10kV cable transfer box |
| CN103872637A (en) * | 2012-12-10 | 2014-06-18 | 中国核动力研究设计院 | Quick cable connection and sealing device |
| CN203312730U (en) * | 2013-06-14 | 2013-11-27 | 北京合纵科沃尔电力科技有限公司 | High-voltage switchgear cable-wiring wall-bushing connection structure |
| CN206116655U (en) * | 2016-08-29 | 2017-04-19 | 镇江市三维电加热器有限公司 | High temperature heavy current lead -out wire device |
| CN206250718U (en) * | 2016-12-21 | 2017-06-13 | 国网宁夏电力公司银川供电公司 | The transfer box that bypass cable fast insert-pull head is connected with user's side terminal |
| CN208316265U (en) * | 2018-07-02 | 2019-01-01 | 国网浙江慈溪市供电有限公司 | A kind of quick transfer box of 0.4kV cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635443A (en) * | 2019-10-09 | 2019-12-31 | 张良 | Independent power supply standby switching device for special building |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109038467B (en) | 2023-11-28 |
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