CN111584210A - 35kV dry-type all-insulation grounding transformer for offshore wind power - Google Patents
35kV dry-type all-insulation grounding transformer for offshore wind power Download PDFInfo
- Publication number
- CN111584210A CN111584210A CN202010324828.8A CN202010324828A CN111584210A CN 111584210 A CN111584210 A CN 111584210A CN 202010324828 A CN202010324828 A CN 202010324828A CN 111584210 A CN111584210 A CN 111584210A
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- Prior art keywords
- insulated
- dry
- transformer
- coil
- adopts
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009413 insulation Methods 0.000 title abstract description 13
- 238000010079 rubber tapping Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 37
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000003595 mist Substances 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
-
- 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
- H01F27/327—Encapsulating or impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides a 35kV dry-type all-insulated grounding transformer for offshore wind power, which comprises a transformer body, wherein the coil outlet of the transformer body adopts an all-insulated cable sheath structure, the Z connection adopts an all-insulated single-pass sleeve structure, the zero sealing adopts an all-insulated three-way sleeve structure, and all outlet wires adopt the all-insulated cable sheath structure so as to ensure that the coil outlet is all insulated; the coil tap is molded by casting through a special mold, and after tapping is adjusted, the coil tap is subjected to thermal shrinkage through a special silicon rubber sheath structure, so that good sealing of a tapping area is ensured, water and salt mist are prevented from entering the tapping area, and the full-insulation requirement is met. The appearance head and the tap joint of the dry grounding transformer are made into a full-insulation structure, so that the product can be better subjected to three-proofing (mildew-proof, moisture-proof and salt-fog-proof) treatment on the sea, the safety distance required by the product is greatly shortened, and the long-term safe and reliable operation of the product in the sea environment is ensured.
Description
Technical Field
The invention relates to a full-sealed insulating dry-type transformer, in particular to a 35kV dry-type full-insulating grounding transformer for offshore wind power.
Background
At present, the lead outlet and the tap on the coil of the known 35kV dry grounding transformer are exposed, the safety distance required by the installation in a cabinet body is large (generally more than 340 mm), and for the offshore environment, the lead outlet and the tap on the coil are exposed in the air with high salt mist and high humidity and are easily corroded, and the known 35kV dry grounding transformer structure is not beneficial to the protection of products in the offshore environment and influences the long-term safe operation of the dry grounding transformer.
SUMMARY OF THE PATENT FOR INVENTION
The technical problem to be solved by the invention is to provide a 35kV dry-type all-insulation grounding transformer for offshore wind power, which has a high-voltage lead all-insulation structure and is superior to a known 35kV dry-type grounding transformer, and a special insulation processing mode is adopted to make a lead outlet of a 35kV dry-type grounding transformer and a tap on a coil into an all-insulation structure so as to ensure the long-term safe operation of the dry-type grounding transformer.
The technical scheme is as follows:
a35 kV dry-type all-insulated grounding transformer for offshore wind power comprises a transformer body, wherein the coil outlet of the transformer body adopts an all-insulated cable sheath structure, the Z connection adopts an all-insulated single-pass sleeve structure, the zero sealing adopts an all-insulated three-way sleeve structure, and all outlet wires adopt the all-insulated cable sheath structure so as to ensure that the coil outlet ends reach all insulation; the coil tap is molded by casting through a special mold, and after tapping is adjusted, the coil tap is subjected to thermal shrinkage through a special silicon rubber sheath structure, so that good sealing of a tapping area is ensured, water and salt mist are prevented from entering the tapping area, and the full-insulation requirement is met.
Optionally, an inner air water cooler is arranged inside the transformer body, and a water pump assembly and an outer air water cooler are arranged outside the transformer body, wherein the inner air water cooler is installed on one side of the transformer body and is communicated with a vent hole formed in the transformer body; the inner air water cooler, the water pump assembly and the outer air water cooler are connected through cooling pipelines to form a water cooling circulation system; a pressure controller is fixed on the inner hollow water cooler, an air bag is stored in a water pump in the water pump assembly, and the air bag and the cooling liquid in the water pump are filled in an accommodating cavity of the water pump; the pressure controller is connected with an air bag of a water pump in the water pump assembly and used for detecting the gas pressure in the air bag in the water pump.
The water inlet of the inner air water cooler is connected with the water outlet of the water pump assembly through a cooling pipeline, the water outlet of the inner air water cooler is connected with the water inlet of the outer air water cooler, and the water inlet of the water pump assembly is connected with the water outlet of the outer air water cooler through a cooling pipeline.
The volume of the air bag in the water pump accommodating cavity is one half of the volume of the water pump accommodating cavity.
The dry-type transformer further comprises a centrifugal fan; the centrifugal fan is fixed on the transformer body and is positioned above the inner hollow water cooler, wherein an air suction port of the centrifugal fan is connected with the heat dissipation holes in the transformer body, and an air blowing port is communicated with the inner hollow water cooler, so that an air cooling circulation system is formed.
The dry-type transformer further comprises a wind pressure switch, and the wind pressure switch is arranged on a channel through which the centrifugal fan is communicated with the inner hollow water cooler.
The dry-type transformer is provided with a first airflow guide plate on a channel between a centrifugal fan and an inner air cooler.
The dry-type transformer is provided with a second airflow guide plate at the position where the inner air cooler is communicated with the ventilation hole of the transformer body; one end of the second airflow guide plate is arranged above the condensing tube in the inner air water cooler, and the other end of the second airflow guide plate is fixed at the ventilation hole of the transformer body.
The transformer comprises a transformer body and a transformer body, wherein the transformer body comprises a shell, two length sides, two width sides and four bevel edges, the length sides and the width sides are vertically arranged relative to the length sides, and the four bevel edges are used for connecting the length sides and the width sides; the length of the bevel edge is greater than that of the width edge and less than that of the length edge, and the bevel edge is convenient to carry.
Specifically, the length of the width side is not more than half of the length side.
Optionally, transformer body bottom install the base, and the edge of base is provided with the side shield, the top cap is connected at the top of side shield, and the avris of top cap is provided with encloses the fender, the locking knob sets up between transformer body and side shield, install first bottom plate and second bottom plate between transformer body and the base, and first bottom plate and second bottom plate pass through the connecting axle and link to each other, the outside winding of connecting axle has first spring, and has seted up the movable groove on the base of connecting axle end department, the edge of first bottom plate is provided with the connecting plate, and the avris of connecting plate pastes and have the sealing strip, the inside of connecting plate is run through there is the movable rod, and the outside winding of movable rod has the second spring to the end department of movable rod installs splint.
Specifically, the side shield and the base are connected through a hinge, the side shield and the enclosing shield are connected through pasting, and the enclosing shield is made of rubber.
Specifically, first bottom plate and second bottom plate pass through the connecting axle and constitute revolution mechanic, and first bottom plate and second bottom plate are network structure to the connecting axle passes through movable groove and base constitution sliding construction.
Specifically, the connecting plate and the second bottom plate are perpendicular to each other, the side of the connecting plate is tightly attached to the base through the sealing strip, and the cross section of the base is of an L-shaped structure.
Specifically, movable rod and connecting plate are sliding connection, and rotating-structure is constituteed to movable rod and splint to splint distribute about the base symmetry.
The beneficial effects of the invention are:
the appearance head and the tap joint of the dry grounding transformer are made into a full-insulation structure, so that the product can be better subjected to three-proofing (mildew-proof, moisture-proof and salt-fog-proof) treatment on the sea, the safety distance required by the product is greatly shortened, and the long-term safe and reliable operation of the product in the sea environment is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The parts not described in the present invention are all the prior art or standard products, and are not described again.
Example (b):
a35 kV dry-type all-insulated grounding transformer for offshore wind power comprises a transformer body, wherein the coil outlet of the transformer body adopts an all-insulated cable sheath structure, the Z connection adopts an all-insulated single-pass sleeve structure 1, the zero sealing adopts an all-insulated three-way sleeve structure 2, and all outlet wires adopt all-insulated cable sheath structures so as to ensure that the coil outlet ends reach all insulation; the coil tap 2 is molded by casting by adopting a special mold, and is subjected to heat shrinkage by using a special silicon rubber sheath structure after tapping adjustment, so that the good sealing of a tapping area is ensured, the water and salt mist in the tapping area are prevented from entering, and the full-insulation requirement is met.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should, without their teaching, appreciate that they can readily devise similar arrangements and embodiments without departing from the spirit and scope of the invention.
Claims (1)
1. A35 kV dry-type all-insulated grounding transformer for offshore wind power comprises a transformer body, wherein the coil outlet of the transformer body adopts an all-insulated cable sheath structure, the Z connection adopts an all-insulated single-pass sleeve structure, the zero sealing adopts an all-insulated three-way sleeve structure, and all outlet wires adopt the all-insulated cable sheath structure; and the coil tap is cast and molded by adopting a special mold, and after tapping and adjusting, the coil tap is thermally shrunk by using a special silicon rubber sheath structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324828.8A CN111584210A (en) | 2020-04-23 | 2020-04-23 | 35kV dry-type all-insulation grounding transformer for offshore wind power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010324828.8A CN111584210A (en) | 2020-04-23 | 2020-04-23 | 35kV dry-type all-insulation grounding transformer for offshore wind power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111584210A true CN111584210A (en) | 2020-08-25 |
Family
ID=72112537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010324828.8A Pending CN111584210A (en) | 2020-04-23 | 2020-04-23 | 35kV dry-type all-insulation grounding transformer for offshore wind power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111584210A (en) |
-
2020
- 2020-04-23 CN CN202010324828.8A patent/CN111584210A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200825 |