CN110444378A - A kind of exchange cannula structure - Google Patents
A kind of exchange cannula structure Download PDFInfo
- Publication number
- CN110444378A CN110444378A CN201910642237.2A CN201910642237A CN110444378A CN 110444378 A CN110444378 A CN 110444378A CN 201910642237 A CN201910642237 A CN 201910642237A CN 110444378 A CN110444378 A CN 110444378A
- Authority
- CN
- China
- Prior art keywords
- elastic plate
- contact tube
- cover board
- nut
- ring
- 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 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004804 winding 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/56—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation one conductor screwing into another
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/60—Connections between or with tubular conductors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a kind of exchange cannula structures, including contact tube, the conductive head being connect with contact tube head threads, cover board and the elastic plate and pressing ring being sequentially arranged above cover board, the contact tube stretches out cover board, the pressing ring and elastic plate are annular shape, the inner ring of the elastic plate folds to form wave structure to outer ring direction, the inner ring diameter of the elastic plate is consistent with conductive pipe diameter, the pressing ring is fixedly connected with cover board by bolt and pushes down the planar section between the outer ring and wave structure of elastic plate, the two sides of the conductive head offer symmetrically arranged fluting, the through-hole through conductive head wall thickness is offered on the side of the fluting, nut and screw are installed on the through-hole.The present invention is locked conductive head and contact tube by screw and nut, and influence of the stress and main transformer vibration that can exclude to drain bus in operation to tightness is threadedly coupled avoids conductive head and the poor contact of contact tube connection screw thread.
Description
Technical field
The present invention relates to high pressure repair apparatus technologies, and in particular to a kind of exchange cannula structure.
Background technique
The important group parts that oil immersed type exchange casing becomes often as the change of current, as shown in Figure 1, its head mainly includes casing
Current-carrying structures are guide rod type current-carrying, and head is conductive head 200, and conductive head 200 and 100 screw thread of contact tube screw current-carrying, conductive
First 200 top is furnished with Split type terminal plate, and the main function that cannula tip designs conductive head 200 is to prevent rainwater and moisture from set
Tube top portion enters.But the part-structure also needs to consider contact tube thermal expansion problem, the main function of original elastic plate 300
It is sealing to be carried out to cannula tip contact tube 100, and certain nargin of expanding with heat and contract with cold is reserved to contact tube 100.Due to such
The expansion of molded cannula contact tube 100 and the relative displacement for shrinking the generation of caused and casing housing can only occur in the top of cover board 500
Portion, therefore conductive head 200 is after 100 temperature of contact tube increases expansion (thermal expansion coefficient of contact tube 100 be greater than porcelain piece), lower eaves with
Gap can be generated between transition plates on cover board 500, thread contact power is caused to reduce, and conductive head 200 loosens.Sleeve field installation
Lead and casing have certain angle afterwards, lead to the effect at conductive head 200 by lateral force, while wind-force and the change of current become vibration
It acts on the conductive head 200 of loosening, makes to become larger by the thread contact resistance of gravity contact in the quiescent state, in the work of load current
With lower fever, to cause a series of problems.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of exchange cannula structure.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of exchange cannula structure, including contact tube, the conductive head being connect with contact tube head threads, cover board and successively
The elastic plate and pressing ring being mounted on above cover board, the contact tube stretch out cover board, and the pressing ring and elastic plate are annular shape, institute
The inner ring for stating elastic plate folds to form wave structure to outer ring direction, the inner ring diameter of the elastic plate and conductive pipe diameter one
It causes, the pressing ring is fixedly connected with cover board by bolt and divides the planar portions between the outer ring and wave structure of elastic plate
Firmly, the two sides of the conductive head offer symmetrically arranged fluting, are offered on the side of the fluting through the logical of conductive head
Hole is installed with nut and screw on the through-hole.
It further, further include first single envelope round nut and the fixture nut being arranged in below elastic plate, the fixed spiral shell
Mother is located at the lower section of first single envelope round nut, and first single envelope round nut and fixture nut abut, and form double nuts structure, described
The top surface of first single envelope round nut abuts the bottom surface of elastic plate.
Further, second single envelope round nut, the bottom of described second single envelope round nut are additionally provided with above the elastic plate
Face abuts the top surface of elastic plate.
Further, the first triangle is accompanied at the link position of the elastic plate and first single envelope round nut and contact tube
The second triangular sealing ring is accompanied at the link position of sealing ring, the elastic plate and second single envelope round nut and contact tube.
Further, seal washer is also accompanied between the elastic plate and cover board, the top surface of the cover board, which offers, to be used for
Place the groove of seal washer.
Further, the bottom surface of the pressing ring is equipped with drain tank.
Compared with the prior art, the invention has the following advantages:
Conductive head and contact tube are locked by screw and nut, the stress for draining bus in operation and main transformer vibration can be excluded
The dynamic influence to tightness is threadedly coupled, avoids conductive head and the poor contact of contact tube connection screw thread, while sealing by multilayer list
Round nut, triangular sealing ring and seal washer are sealed its coupling part, have good waterproof performance, in the rain stopping time
Since casing contact tube own temperature is compared with environment height, around a small amount of water will soon evaporate, will not be to this structure
Sealing has an impact.
Detailed description of the invention
Fig. 1 is the original structure schematic cross-section for exchanging cannula structure；
Fig. 2 is the cross section structure schematic diagram of the exchange cannula structure of the application；
Fig. 3 is the enlarged structure schematic diagram of part A in Fig. 2；
Description of symbols: 1, contact tube；2, conductive head；21, it slots；22, screw；3, elastic plate；31, wave structure；
4, pressing ring；41, drain tank；5, cover board；61, first single envelope round nut；62, second single envelope round nut；63, fixture nut；71,
One triangular sealing ring；72, the second triangular sealing ring；73, seal washer；
100, contact tube；200, conductive head；300, elastic plate；500, cover board.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment
As shown in Figures 2 and 3, a kind of exchange cannula structure is led including contact tube 1, with what 1 head threads of contact tube were connect
Dateline 2, cover board 5 and the elastic plate 3 and pressing ring 4 that are sequentially arranged at the top of cover board 5, with the top of closed cover 5, avoid water from
It is flowed at this internal.
Conductive head 2 offers symmetrically arranged fluting that is, in the monosymmetric place of conductive head 2 using half slide structure
21, and it is all provided with the through-hole through conductive head 2 on the side of two flutings 21, side has 2, and 4 in total.Conductive head 2 with
When contact tube 1 is threadedly coupled, by being equipped with screw 22 and nut on through-hole, so that conductive head 2 clamps contact tube 1, from
Even and if conductive head 2 and contact tube 1 is enabled also to be able to maintain fixation, no in the case where 1 temperature of contact tube increases expansion and generates gap
It can be easy rotation due to loosening and fall off.
Pressing ring 4 and elastic plate 3 are the shape of annulus, and the inner ring of elastic plate 3 folds to form a circle wave to outer ring direction
The inner ring diameter of structure 31, elastic plate 3 is consistent with 1 diameter of contact tube, the race diameter of elastic plate 3 and the race diameter of pressing ring 4
Unanimously, pressing ring 4 and elastic plate 3 are fixedly connected by bolt with cover board 5, and pressing ring 4 is by the outer ring of elastic plate 3 and wave structure
Planar section between 31 is pushed down, to carry out preliminary sealing closing to the top of cover board 5.
And in the lower section of elastic plate 3, also it is equipped with first single envelope round nut 61 and fixture nut 63, fixture nut 63 is the
The lower section of one single envelope round nut 61, to limit the position of first single envelope round nut 61, the bottom surface of first single envelope round nut 61 and solid
The top surface for determining nut 63 abuts, and the top surface of first single envelope round nut 61 and the bottom surface of elastic plate 3 abut, and then to elastic plate 3
Make further support in bottom；In the top of elastic plate 3, it is also equipped with second single envelope round nut 62, second single envelope round nut 62
Bottom surface abut the top surface of elastic plate 3, and there are the mounting groove for placing wave structure 31, second single envelope round nut 62 pushes up after installing
The position in face is identical as the position of 4 top surface of pressing ring, to guarantee the smooth of upper surface.
The first triangular sealing ring 71 is accompanied at the link position of elastic plate 3 and first single envelope round nut 61 and contact tube 1,
The second triangular sealing ring 72 is accompanied at the link position of the elastic plate 3 and second single envelope round nut 62 and contact tube 1.Elasticity
Seal washer 73 is also accompanied between plate 3 and cover board 5, the top surface of cover board 5 offers the groove for placing seal washer 73, thus
The leakproofness of 5 top surface of cover board is further strengthened by above-mentioned sealing ring.In order to enhance the leakproofness of triangular sealing ring, three are being put
It, can be first with the coupling part of polytetrafluoroethylene tape winding elastic plate 3 and contact tube 1, polytetrafluoroethylene (PTFE) belt before the sealing ring of angle
There are good sealing performance and Corrosion Protection, be used in combination with triangular sealing ring, so as to more effectively maintain whole use
Service life.
It is equipped with drain tank 41 in the bottom surface of pressing ring 4, drain tank 41 is provided with 4 around 1 circumference of contact tube, and drain tank 41 passes through
The interior lateral surface for wearing pressing ring 4, is connected at the wave structure 31 of elastic plate 3, is mainly used for drainage at rainy day, from cover board 5
The rainwater that junction flows into.The water for when raining at elastic plate 3 being more than 3 wave structure of elastic plate, 31 height can be from this 4 drain tanks
41 outflows, the rain stopping time, a small amount of water will soon evaporate at elastic plate 3 since 1 own temperature of contact tube is high compared with environment, thus
Keep good sealing performance.
Specifically when installation, fixture nut 63 is screwed in from the top of contact tube 1 first, then revolves first single envelope round nut
61 are close to fixture nut 63, and keep first single envelope 61 upper surface of round nut concordant with the upper surface of cover board 5, then put the one or three
For angle sealing ring 71 in the seal groove of first single envelope round nut 61, seal washer 73 is put into elasticity in the groove of cover board 5 later
Plate 3 adjusts good position and simultaneously covers pressing ring 4, is positioned using bolt, while compressing seal washer 73 in the groove of cover board 5, then will
Polytetrafluoroethylene tape is put in 1 junction of contact tube on elastic plate 3, is put into the second triangular sealing ring 72, and screws in second single envelope
Round nut 62 compresses, and finally screws on the conductive head 2 with half slide structure, is screwed in 2 internal screw thread of conductive head and 1 external screw thread of contact tube
After good, screw 22 and nut lock the conductive head 2 of half slide structure with contact tube 1, and installation can be completed.
Conductive head and contact tube are locked by screw and nut, can exclude to transport by the exchange cannula tip structure after installation
The influence of the stress and main transformer vibration of bus to tightness is threadedly coupled is drained in row, avoids conductive head and contact tube connection screw thread
Poor contact, while round nut, triangular sealing ring and seal washer are sealed by multilayer list, its coupling part is sealed, have
Have good waterproof performance, in the rain stopping time since casing contact tube own temperature is compared with environment height, around a small amount of water soon
It can evaporate, the sealing of waterproof construction will not be had an impact.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (6)
1. a kind of exchange cannula structure, it is characterised in that: including contact tube (1), the conduction being connect with contact tube (1) head threads
Head (2), cover board (5) and the elastic plate (3) and pressing ring (4) being sequentially arranged above cover board (5), the contact tube (1) are stretched out
Cover board (5), the pressing ring (4) and elastic plate (3) are annular shape, and the inner ring of the elastic plate (3) folds shape to outer ring direction
At wave structure (31), the inner ring diameter of the elastic plate (3) is consistent with contact tube (1) diameter, and the pressing ring (4) passes through bolt
It is fixedly connected and pushes down the planar section between the outer ring of elastic plate (3) and wave structure (31), the conduction with cover board (5)
The two sides of head (2) offer symmetrically arranged fluting (21), offer on the side of the fluting (21) through conductive head (2)
Through-hole is installed with nut and screw (22) on the through-hole.
2. exchange cannula structure according to claim 1, it is characterised in that: further include being arranged below elastic plate (3)
First single envelope round nut (61) and fixture nut (63), the fixture nut (63) are located under first single envelope round nut (61)
Side, and first single envelope round nut (61) and fixture nut (63) abut, and form double nuts structure, described first single envelope round nut
(61) top surface abuts the bottom surface of elastic plate (3).
3. exchange cannula structure according to claim 2, it is characterised in that: be additionally provided with above the elastic plate (3)
The bottom surface of two single envelopes round nut (62), described second single envelope round nut (62) abuts the top surface of elastic plate (3).
4. exchange cannula structure according to claim 3, it is characterised in that: the elastic plate (3) and first single envelope circle spiral shell
It is accompanied the first triangular sealing ring (71) at the link position of female (61) and contact tube (1), the elastic plate (3) and second single envelope
The second triangular sealing ring (72) is accompanied at the link position of round nut (62) and contact tube (1).
5. exchange cannula structure according to claim 1, it is characterised in that: between the elastic plate (3) and cover board (5) also
Seal washer is accompanied, the top surface of the cover board (5) offers the groove for placing seal washer.
6. exchange cannula structure according to claim 1, it is characterised in that: the bottom surface of the pressing ring (4) is equipped with drain tank
(41)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642237.2A CN110444378A (en) | 2019-07-16 | 2019-07-16 | A kind of exchange cannula structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910642237.2A CN110444378A (en) | 2019-07-16 | 2019-07-16 | A kind of exchange cannula structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110444378A true CN110444378A (en) | 2019-11-12 |
Family
ID=68430537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910642237.2A Pending CN110444378A (en) | 2019-07-16 | 2019-07-16 | A kind of exchange cannula structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110444378A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204117791U (en) * | 2014-10-16 | 2015-01-21 | 中国西电电气股份有限公司 | A kind of current carrying terminals structure of bushing shell for transformer |
| CN205645492U (en) * | 2016-03-10 | 2016-10-12 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A with army cap that is used for change of current to become net side high -tension bushing |
| CN208848727U (en) * | 2018-07-23 | 2019-05-10 | 南京正方电气有限公司 | Bushing shell for transformer |
| CN210136771U (en) * | 2019-07-16 | 2020-03-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current sleeve structure |
-
2019
- 2019-07-16 CN CN201910642237.2A patent/CN110444378A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204117791U (en) * | 2014-10-16 | 2015-01-21 | 中国西电电气股份有限公司 | A kind of current carrying terminals structure of bushing shell for transformer |
| CN205645492U (en) * | 2016-03-10 | 2016-10-12 | 中国南方电网有限责任公司超高压输电公司曲靖局 | A with army cap that is used for change of current to become net side high -tension bushing |
| CN208848727U (en) * | 2018-07-23 | 2019-05-10 | 南京正方电气有限公司 | Bushing shell for transformer |
| CN210136771U (en) * | 2019-07-16 | 2020-03-10 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Alternating current sleeve structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206846132U (en) | A kind of hydraulic engineering pipeline protection cover | |
| JP3218253U (en) | Water-floating support structure for solar panels | |
| CN110444378A (en) | A kind of exchange cannula structure | |
| CN206738083U (en) | A kind of engine room cover assembly | |
| CN210136771U (en) | Alternating current sleeve structure | |
| CN105262416A (en) | Fixing device for installation of trapezoid tile roof | |
| CN206529974U (en) | A kind of anti-loose fixture of waterproof installed for roofing tile | |
| CN209592943U (en) | A kind of novel cable via seal cover | |
| CN207796083U (en) | A kind of hydrogen-cooled device rubber sealing structure | |
| CN204922282U (en) | Fire the pipe connection | |
| CN203966800U (en) | A kind of sleeve pipe of transformer and case lid hermetically-sealed construction | |
| CN208417950U (en) | Sealing device for pipe heat exchanger fast blockage | |
| CN207675319U (en) | Can core pulling closed crimping temperature sensor | |
| CN106090474A (en) | Transformer oil chromatographic on-Line Monitor Device fuel outlet valve oil pipe loop seals assembly of devices | |
| CN205909184U (en) | Energy -conserving street lamp fixing device | |
| CN214095721U (en) | Waterproof sealing part for cooling tower upright post | |
| CN205937806U (en) | Telescopic head of screw thread | |
| CN205542407U (en) | Condenser explosion -proof cover assembly | |
| CN220870312U (en) | Sealing assembly with heat insulation effect | |
| CN221237031U (en) | Sealing nut | |
| CN216201089U (en) | Oil-leakage-proof sealing cover for auxiliary connecting cylinder and auxiliary connecting valve rod | |
| CN210920632U (en) | Wind turbine generator system ultrasonic wave anemoscope fixing device | |
| CN205227852U (en) | High temperature evacuated collector tube of high life with low costs | |
| CN209212364U (en) | A kind of flexibility exhaust connection | |
| CN205332575U (en) | Closing device of heavy -calibre solar energy collection pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |