CN110445085A - A kind of cable interface sealing mechanism and underwater power transformer - Google Patents
A kind of cable interface sealing mechanism and underwater power transformer Download PDFInfo
- Publication number
- CN110445085A CN110445085A CN201910875825.0A CN201910875825A CN110445085A CN 110445085 A CN110445085 A CN 110445085A CN 201910875825 A CN201910875825 A CN 201910875825A CN 110445085 A CN110445085 A CN 110445085A
- Authority
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- China
- Prior art keywords
- cable
- flexible conical
- pressure ring
- sealing mechanism
- locking pressure
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 239000000565 sealant Substances 0.000 claims abstract description 10
- 230000004323 axial length Effects 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000002791 soaking Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002184 metal Substances 0.000 description 5
- 230000004927 fusion Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
-
- 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
- H02G15/013—Sealing means for cable inlets
-
- 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
- H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil
- H02G15/32—Cable inlets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The invention discloses a kind of cable interface sealing mechanisms, including cable incoming-outgoing conduit, flexible conical set, lock pressure ring and clamping screw, cable incoming-outgoing conduit is fixedly connected with cabinet inlet and outlet, tapered flaring structure is set on the inside of the outer end of cable incoming-outgoing conduit, flexible conical set inside is arranged to cylindrical hole, its outside is arranged to and the matched taper of taper flaring structure, and flexible conical set axial length is greater than taper flaring structure axial length, clamping screw is fixedly connected by the bolt hole on locking pressure ring with the outer end face of cable incoming-outgoing conduit, then flexible conical covers under clamping screw effect, it is pressed between cable incoming-outgoing conduit and cable by locking pressure ring and forms sealing.It is equipped between flexible conical set and cable from modeling sealant.Also disclose the underwater power transformer using the sealing mechanism.The present invention is able to achieve the excellent sealing of cable and transformer-cabinet, provides reliable guarantee to be really achieved long period of soaking in the underwater power transformer that underwater security is run.
Description
Technical field
The present invention relates to electric power mounting technology fields, become more particularly to a kind of cable interface sealing mechanism and underwater electric power
Depressor.
Background technique
10/0.4kV power transformer is essential important equipment in distribution system, the direct shadow of reliability of operation
Ring the safety of electrical power distribution system.China's Coastal Areas and southern rainy climate and typhoon disaster often give distribution network and amount
Big wide power transformer brings huge loss.
In recent years, electric network reconstruction proposes the concept of subway transformer, to reduce the influence of weather, but this kind of product mesh
Before can only accomplish simple waterproof, in short-term cross water, not can solve the problem of transformer is run under water for a long time still, be less resistant to flood
Water impregnates for a long time.Existing subway transformer is to solve the problems, such as that transformer immersion needs to be put into closed melt pit,
And it needs that the ponding in melt pit is discharged by water pump incessantly.But in reality operation, since many reasons cause electricity
When net has a power failure, water pump can not work, and transformer will be flooded for a long time and damage.It is produced according to statistics in the transformer of China's flood tide
Having sizable part in energy is replaced for annual damage transformer, and economic loss is huge.
It can be seen that above-mentioned existing underground electric transformer is there are still there is inconvenient and defect, and urgently it is subject to further
It improves.A kind of new cable interface sealing mechanism and underwater power transformer are how founded, keeps its waterproof performance good, really
Realize transformer long-term running purpose under water, becoming current industry pole needs improved target.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of cable interface sealing mechanisms, keep its waterproof performance good, are
Realize that longtime running provides reliable guarantee to transformer under water, to overcome the shortcomings of existing underground electric transformer.
In order to solve the above technical problems, the present invention provides a kind of cable interface sealing mechanism, for realizing cable and cabinet
The sealing of import and export, including cable incoming-outgoing conduit, flexible conical set, locking pressure ring and clamping screw.
The cable incoming-outgoing conduit is fixedly connected with cabinet inlet and outlet, is set on the inside of the outer end of the cable incoming-outgoing conduit
It is set to taper flaring structure, the inside of the flexible conical set is arranged to cylindrical hole, and outside is arranged to and the taper
The taper that flaring structure matches, and the axial length of flexible conical set is greater than the axial direction length of the taper flaring structure
Degree, the flexible conical set and locking pressure ring are set on cable, and the flexible conical set is located at the taper flaring structure
Place, the locking pressure ring are located at the outside of flexible conical set, and the clamping screw passes through the bolt on the locking pressure ring
Through-hole is fixedly connected with the outer end face of the cable incoming-outgoing conduit, then the flexible conical covers the effect in the clamping screw
Under, it is pressed between the cable incoming-outgoing conduit and cable by the locking pressure ring and forms sealing.
It is further improved, the bottom of the taper flaring structure is equipped with counterbore platform.
It is further improved, is provided with retaining ring at the counterbore platform.
It is further improved, the flexible conical set uses the deformable sealing shroud made of silicone rubber material.
It is further improved, the shore hardness of the flexible conical set is 45 degree.
It is further improved, further includes the modeling sealant certainly being arranged between the flexible conical set and cable.
It is further improved, it is described to use strongly tensile self-adhering-type interaction rubber material from modeling sealant.
It is further improved, the locking pressure ring is equipped at least three and is uniformly distributed bolt hole.
It is further improved, the locking pressure ring is under the fastening of the clamping screw, the locking pressure ring and the cable
Gap between conducting pipes outer end face is 2~5mm, and more excellent is 3mm.
The present invention also provides a kind of underwater power transformers, the cable including cabinet and the disengaging cabinet, the cable
Sealing with cabinet import and export uses above-mentioned cable interface sealing mechanism.
By adopting such a design, the present invention has at least the following advantages:
1. the present invention passes through setting deformable flexible taper sheath and matched with taper flaring structure
Cable incoming-outgoing conduit, locking pressure ring and clamping screw, the wedge-type seal structure is simple, at low cost, be able to achieve cable and cabinet into
The excellent sealing effect in exit.
2. also by setting from modeling sealant, due to being able to achieve this from the strongly tensile self-adhering-type reciprocation for moulding sealant
Chemical fusion between modeling sealant and cable appearance and flexible conical set inside, preferably realizes cable and flexible conical set
Between sealing, it is further to promote cable interface sealing effect, realize that really sealing provides reliably for submerged cable interface
It ensures.
3. can also guarantee that flexible conical is covered in cable incoming-outgoing conduit as far as possible by setting counterbore platform and metal collar
Filling between cable, and prevent flexible conical set from being squeezed without limitation.
4. also metal can be played by setting the gap between locking pressure ring and cable incoming-outgoing external catheter end face as 2~5mm
The effect of closed rat-biting proof provides reliable guarantee for underground for power transformer.
5. underwater power transformer of the invention, can good reality by using the improved cable interface sealing mechanism of the application
Sealing between existing cable and underwater electric transformer box, guarantees the water-proof function of cabinet, and reaching really can long period of soaking
In the underwater power transformer of underwater security operation, the national problem under China coast and southern rainy climate is thoroughly solved.
Detailed description of the invention
The above is merely an overview of the technical solutions of the present invention, in order to better understand the technical means of the present invention, below
In conjunction with attached drawing, the present invention is described in further detail with specific embodiment.
Fig. 1 is the structural schematic diagram of cable interface sealing mechanism use state of the present invention.
Fig. 2 is the structural schematic diagram that flexible conical covers in cable interface sealing mechanism of the present invention.
Specific embodiment
Referring to shown in attached Fig. 1 and 2, the present embodiment cable interface sealing mechanism, for realizing cable 1 and transformer-cabinet 2
The sealing of import and export comprising cable incoming-outgoing conduit 3, flexible conical set 4, locking pressure ring 5 and clamping screw 6.
The cable incoming-outgoing conduit 3 is fixedly connected with the inlet and outlet of the cabinet 2, and the company of the cable incoming-outgoing conduit 3 and cabinet 2
The place of connecing is arranged to right angle platform scalariform, increases the contact area of conduit outer wall and cabinet inlet and outlet edge, promotes airtightness.This implementation
The cable incoming-outgoing conduit 3 uses stainless steel tube in example, is connected with 2 import and export of cabinet made of weather-resistant steel plate by welding.
Tapered flaring structure is set on the inside of the outer end of the cable incoming-outgoing conduit 3.The outer end face of the cable incoming-outgoing conduit 3 is equipped with multiple
Bolt fixing hole.
The inside of flexible conical set 4 is arranged to cylindrical hole, and outside is arranged to and the taper flaring structure phase
The taper matched, and the axial length of flexible conical set 4 is greater than the axial length of the taper flaring structure.The flexible conical set
4 use the deformable sealing shroud made of silicone rubber material.The shore hardness of flexible conical set 4 is 45 degree, also has resistance
Fire flame proof function.
The locking pressure ring 5 uses stainless steel pressure ring, which is provided with multiple solid with bolt on 3 outer end face of cable incoming-outgoing conduit
Determine the corresponding bolt hole in hole.The locking pressure ring 5 is equipped with 4 equally distributed bolt holes in the present embodiment.
The clamping screw 6 uses high strength stainless steel bolt.
In use, flexible conical set 4 and locking pressure ring 5 are set on cable 1, flexible conical set 4 is located at the cone
At shape flaring structure, which is located at the outside of flexible conical set 4, which passes through on the locking pressure ring 5
Bolt hole connect with the bolt fixing hole on 3 outer end face of cable incoming-outgoing conduit, realize by locking pressure ring 5 is fixed on cable
On conducting pipes 3, flexible conical set 4 is pressed between cable incoming-outgoing conduit 3 and cable 1 at the same time, is formed good close
Envelope.
Preferred embodiment is that the bottom of the taper flaring structure is equipped with counterbore platform.Metal is provided at the counterbore platform
Retaining ring 7 can guarantee filling of the flexible conical set 4 between cable incoming-outgoing conduit 3 and cable 1 as far as possible, and prevent flexible cone
Shape set is squeezed without limitation.
More excellent embodiment is that the cable interface sealing mechanism further includes being arranged between flexible conical set 4 and cable 1
From modeling sealant 8.
It should be from modeling sealant 8 using strongly tensile self-adhering-type interaction rubber material in the present embodiment.The strongly tensile self-adhering-type is handed over
Mutual rubber material when in use, through stretch-wraps at cable 1 covers 4 corresponding positions with flexible conical, realizes the interaction
The fusion reaction of rubber material and cable sheath completes the flexible sealing to cable sheath, then by being fixed on flexible conical set 4
Inside, and taper sheath inner wall fusion reaction forms not only waterproof but also the excellent sealing effect of gas-tight.
The present embodiment cable interface sealing mechanism can be used for the cable of underground electric transformer and transformer-cabinet is imported and exported
The sealing at place, good sealing effect can make underground electric transformer reach the function that long period of soaking underwater security is run, very
Just realizing the use target of underwater power transformer.
In addition, by the way of installing a plurality of cable side by side, every cable setting is existed for the underwater power transformer
In independent closed conducting pipes, the anti-hermetic seal of independent realization waterproof can play the skill of barrier cable fault sprawling in this way
Art effect.
The cabinet of the underwater power transformer is made of the weather-proof steel material for carrying out Waterproof corrosion processing, is able to achieve underwater
Service life is no less than 30 years effects.
In order to meet the cable seal demand of different-diameter, which is provided with the cable of different size
Conducting pipes 3, flexible conical set 4, metal collar 7 and locking pressure ring 5.Cooperation between above-mentioned each component should reach: make
Gap of the locking pressure ring 5 under the fastening of the clamping screw 6, between the locking pressure ring 5 and 3 outer end face of cable incoming-outgoing conduit
For 2~5mm, more excellent is 3mm.The structure can form metal enclosed rat-biting proof function, further increase the safety of power transformer
Property.
Certainly, above-mentioned cable interface sealing mechanism can also be used in other equipment for needing cable seal, structure is simple,
It is at low cost, sealing effect is good, widely used.
It is computed demonstration, 10 meters of hydraulic pressure can be resisted using the underwater power transformer of the cable interface sealing mechanism, and can
All kinds of unsafe conditions are obstructed, such as explosion, dust and all kinds of pollutions, is also equipped with fire-retardant and rat-biting proof function, fully meets transformation
Device long-term running requirement under water adapts to the urgent market demand of country.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, this
Field technical staff makes a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all falls within this hair
In bright protection scope.
Claims (10)
1. a kind of cable interface sealing mechanism, for realizing the sealing of cable and cabinet import and export, which is characterized in that including electricity
Cable conducting pipes, flexible conical set, locking pressure ring and clamping screw,
The cable incoming-outgoing conduit is fixedly connected with cabinet inlet and outlet, is arranged on the inside of the outer end of the cable incoming-outgoing conduit
Taper flaring structure, the inside of the flexible conical set are arranged to cylindrical hole, and outside is arranged to be flared with the taper
The taper that structure matches, and the axial length of flexible conical set is greater than the axial length of the taper flaring structure,
The flexible conical set and locking pressure ring are set on cable, and the flexible conical set is located at the taper flaring structure,
The locking pressure ring is located at the outside of flexible conical set, and the clamping screw passes through the bolt hole on the locking pressure ring
It being fixedly connected with the outer end face of the cable incoming-outgoing conduit, then the flexible conical covers under the action of the clamping screw, by
The locking pressure ring, which is pressed between the cable incoming-outgoing conduit and cable, forms sealing.
2. cable interface sealing mechanism according to claim 1, which is characterized in that the bottom of the taper flaring structure is set
There is counterbore platform.
3. cable interface sealing mechanism according to claim 2, which is characterized in that be provided with gear at the counterbore platform
Circle.
4. cable interface sealing mechanism according to claim 1, which is characterized in that the flexible conical set is using by silicon rubber
Deformable sealing shroud made of glue material matter.
5. cable interface sealing mechanism according to claim 4, which is characterized in that the shore hardness of the flexible conical set
It is 45 degree.
6. cable interface sealing mechanism according to any one of claims 1 to 5, which is characterized in that further include being arranged in institute
State the modeling sealant certainly between flexible conical set and cable.
7. cable interface sealing mechanism according to claim 6, which is characterized in that the modeling sealant certainly is using strongly tensile
Self-adhering-type interacts rubber material.
8. cable interface sealing mechanism according to claim 1, which is characterized in that the locking pressure ring is equipped at least 3
It is a to be uniformly distributed bolt hole.
9. cable interface sealing mechanism according to claim 1, which is characterized in that the locking pressure ring is in the locking screw
Under the fastening of bolt, the gap between the locking pressure ring and cable incoming-outgoing external catheter end face is 2~5mm.
10. a kind of underwater power transformer, including cabinet and pass in and out the cable of the cabinet, which is characterized in that the cable with
The sealing of cabinet import and export uses the described in any item cable interface sealing mechanisms of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875825.0A CN110445085A (en) | 2019-09-17 | 2019-09-17 | A kind of cable interface sealing mechanism and underwater power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875825.0A CN110445085A (en) | 2019-09-17 | 2019-09-17 | A kind of cable interface sealing mechanism and underwater power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110445085A true CN110445085A (en) | 2019-11-12 |
Family
ID=68440347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910875825.0A Pending CN110445085A (en) | 2019-09-17 | 2019-09-17 | A kind of cable interface sealing mechanism and underwater power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110445085A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10845542B1 (en) | 2019-08-19 | 2020-11-24 | Afl Telecommunications Llc | Cable node transition assemblies |
| CN113937681A (en) * | 2021-10-29 | 2022-01-14 | 江苏方天电力技术有限公司 | Cable branching fixing device |
| CN114614434A (en) * | 2022-01-27 | 2022-06-10 | 北京航天发射技术研究所 | Cable leading-out waterproof sealing device and method based on high-pressure underwater environment test |
| DE102021122931A1 (en) | 2021-09-06 | 2023-03-09 | Endress+Hauser Flowtec Ag | Electrical feedthrough and electronics housing |
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|---|---|---|---|---|
| CN102748537A (en) * | 2011-04-19 | 2012-10-24 | 上海电缆研究所 | Seal run-through structure for extracting electric cables from enclosed container |
| CN204012618U (en) * | 2014-08-20 | 2014-12-10 | 上海中联重科桩工机械有限公司 | Cable sealing device and underground continuous wall construction machine |
| CN107482567A (en) * | 2017-09-22 | 2017-12-15 | 山东电力建设第工程公司 | A kind of buried cable fire-proof and water-proof sealing device |
| CN206878609U (en) * | 2017-06-27 | 2018-01-12 | 胜利油田胜利泵业有限责任公司 | A kind of high-power submersible machine cable interface sealing structure |
| CN108711487A (en) * | 2018-06-11 | 2018-10-26 | 河南森源电气股份有限公司 | A kind of transformer and its cable interface sealing structure |
-
2019
- 2019-09-17 CN CN201910875825.0A patent/CN110445085A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748537A (en) * | 2011-04-19 | 2012-10-24 | 上海电缆研究所 | Seal run-through structure for extracting electric cables from enclosed container |
| CN204012618U (en) * | 2014-08-20 | 2014-12-10 | 上海中联重科桩工机械有限公司 | Cable sealing device and underground continuous wall construction machine |
| CN206878609U (en) * | 2017-06-27 | 2018-01-12 | 胜利油田胜利泵业有限责任公司 | A kind of high-power submersible machine cable interface sealing structure |
| CN107482567A (en) * | 2017-09-22 | 2017-12-15 | 山东电力建设第工程公司 | A kind of buried cable fire-proof and water-proof sealing device |
| CN108711487A (en) * | 2018-06-11 | 2018-10-26 | 河南森源电气股份有限公司 | A kind of transformer and its cable interface sealing structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10845542B1 (en) | 2019-08-19 | 2020-11-24 | Afl Telecommunications Llc | Cable node transition assemblies |
| DE102021122931A1 (en) | 2021-09-06 | 2023-03-09 | Endress+Hauser Flowtec Ag | Electrical feedthrough and electronics housing |
| CN113937681A (en) * | 2021-10-29 | 2022-01-14 | 江苏方天电力技术有限公司 | Cable branching fixing device |
| CN114614434A (en) * | 2022-01-27 | 2022-06-10 | 北京航天发射技术研究所 | Cable leading-out waterproof sealing device and method based on high-pressure underwater environment test |
| CN114614434B (en) * | 2022-01-27 | 2024-03-05 | 北京航天发射技术研究所 | Waterproof sealing device and method for leading-out of environment test cable based on high-pressure water |
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