CN105405617A - Dry type transformer and insulating cushion block therefor - Google Patents
Dry type transformer and insulating cushion block therefor Download PDFInfo
- Publication number
- CN105405617A CN105405617A CN201510938243.4A CN201510938243A CN105405617A CN 105405617 A CN105405617 A CN 105405617A CN 201510938243 A CN201510938243 A CN 201510938243A CN 105405617 A CN105405617 A CN 105405617A
- Authority
- CN
- China
- Prior art keywords
- insulating
- dry
- voltage coil
- type transformer
- low
- 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
- 125000006850 spacer group Chemical group 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 238000003825 pressing Methods 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/303—Clamping coils, windings or parts thereof together
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses an insulating cushion block for a dry type transformer, and belongs to the technical field of the dry type transformer. The insulating cushion block comprises a cushion block body with a certain thickness and a positioning block; a sliding groove is formed in one side of the cushion block body; the positioning block is glidingly arranged in the sliding groove of the cushion block body; and a counter bore for allowing a fastener to insert is also formed in the cushion block body. The invention also provides the dry type transformer applying the insulating cushion block. The insulating cushion block is universal, and can adapt to the dry type transformers of different capacities, so that the die costs and storage costs of different insulating cushion blocks of transformer manufacturers are greatly reduced.
Description
Technical Field
The invention belongs to the technical field of transformers, and particularly relates to an insulating cushion block of a dry-type transformer and the dry-type transformer adopting the insulating cushion block.
Background
The dry-type transformer is widely used in places with fire protection and environmental protection requirements, such as hospitals, high-rise buildings, airports, wharf CNC mechanical equipment and the like, and simply, the dry-type transformer refers to a transformer with an iron core and a winding which are not immersed in insulating oil. The coils of a dry-type transformer are usually supported and compressed by insulating spacers. As shown in fig. 1, a schematic diagram of a partial structure of a conventional dry-type transformer is shown, which includes a high-voltage coil 10, a low-voltage coil 11, an upper clamp 12, a lower clamp 13, an upper insulating pad 14, and a lower insulating pad 15, where the upper insulating pad 14 and the lower insulating pad 15 are respectively located at the top and the bottom of the high-voltage coil 10 and the low-voltage coil 11. As can be seen from fig. 1, the thicknesses of the upper insulating block 14 and the lower insulating block 15 are different, and thus, although they are similar in shape, they cannot be used in common. Furthermore, the dry-type transformers with different capacities have different types of insulating cushion blocks, so that a plurality of molds are needed, and meanwhile, the insulating cushion blocks with each capacity need to be stocked, which causes inventory cost.
Disclosure of Invention
The present invention aims to provide an insulating spacer block for a dry-type transformer, which has the greatest advantages of versatility, reduced number of dies and inventory, and reduced cost, in view of the above-mentioned drawbacks of the prior art.
It is still another object of the present invention to provide a dry-type transformer using the above-mentioned insulation blocks, which uses the same insulation blocks, and can be adapted to dry-type transformers with different capacities by adjusting the upper and lower insulation blocks.
The purpose of the invention is realized by adopting the following technical scheme:
the utility model provides an insulating pad for dry-type transformer, insulating pad is including the pad body and the locating piece that have certain thickness, the groove of sliding has been seted up to pad body one side, the locating piece slides and sets up in the groove of sliding of pad body, still set up the counter bore that supplies the fastener to sink and insert on the pad body.
Furthermore, the invention also provides a dry-type transformer adopting the insulating cushion block, wherein the insulating cushion block comprises an upper insulating cushion block and a lower insulating cushion block which have the same size;
the dry type transformer further includes: a low-voltage coil, a high-voltage coil, an upper fastening bolt, a lower fastening bolt, a high-low voltage upper clamping piece and a high-low voltage lower clamping piece, wherein,
the top parts of the low-voltage coil and the high-voltage coil are provided with upper insulating cushion blocks, positioning blocks of the upper insulating cushion blocks are positioned between the low-voltage coil and the high-voltage coil, the head parts of the upper fastening bolts are placed in counter bores of the upper insulating cushion blocks, and the screw rods penetrate through threaded holes of the high-low voltage upper clamping pieces and are provided with upper fastening nuts; the bottom of the low-voltage coil and the bottom of the high-voltage coil are provided with lower insulating cushion blocks, positioning blocks of the lower insulating cushion blocks are positioned between the low-voltage coil and the high-voltage coil, the heads of the lower fastening bolts are placed in counter bores of the lower insulating cushion blocks, and the screws penetrate through threaded holes of the clamping pieces under high and low pressure and are provided with lower fastening nuts.
Due to the adoption of the technical scheme, the invention has the following advantages:
the insulation cushion block for the dry-type transformer is provided with the positioning block in a sliding mode on the cushion block body, so that the insulation cushion block is suitable for requirements of dry-type transformers with different capacities when the positioning block is adjusted, meanwhile, for the problem that the thicknesses of the upper insulation cushion block and the lower insulation cushion block of the traditional dry-type transformer are different, a threaded hole mode for a fastener to penetrate through is adopted on the insulation cushion block, and the distance required when the insulation cushion block is applied to the dry-type transformer is adjusted by utilizing the threaded hole and the fastener. Therefore, the universality of the insulating cushion block is well solved, and the investment cost and the inventory cost of the die are reduced. If the traditional method is used, each capacity needs to be prepared with 5 stocks, and 5 capacities are 25 stocks. I only need 5 machines to meet production now, and 20 machines can be out of stock because general just can be had, so the inventory cost is very low.
Drawings
Fig. 1 is a partial structural view of a conventional dry type transformer;
FIG. 2 is a schematic structural diagram of an insulating spacer for a dry type transformer according to the present invention;
fig. 3 is a partial structural schematic view of the dry type transformer according to the present invention;
FIG. 4 is an enlarged view of the connection between the upper insulating pad and the upper high and low voltage clamps according to the present invention;
FIG. 5 is an enlarged view of the connection between the lower insulating pad and the lower clamp of high and low voltages according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the invention is further explained by combining the drawings and the detailed implementation mode:
as shown in fig. 2, the present invention provides an insulating spacer 20 for a dry transformer, where the insulating spacer 20 includes a spacer body 21 having a certain thickness and a positioning block 22, a sliding groove 23 is formed on one side of the spacer body 21, the positioning block 22 is slidably disposed in the sliding groove 23 of the spacer body 21, and a counter bore (not shown) for a fastener to be inserted and inserted is further formed in the spacer body 21. The fastener is a fastening bolt.
According to the scheme, the sliding groove 23 is formed in the insulating cushion block 20, the positioning block 22 is connected in the sliding groove 23 in a sliding mode, and the counter bore is formed in the insulating cushion block 20, so that the dry-type transformer can be used up and down universally when applied to the dry-type transformer, an additional insulating cushion block is not needed, and the dry-type transformer can be suitable for dry-type transformers with different capacities by adjusting the positioning block of the insulating cushion block. Therefore, the universality of the insulating cushion block is well solved, and the investment cost and the inventory cost of the die are reduced.
Further, the present invention also provides a dry-type transformer using the above-mentioned insulating blocks, referring to fig. 3 to 5, in which the insulating blocks include an upper insulating block 31 and a lower insulating block 32 having the same size;
the dry type transformer further includes:
a low-voltage coil 33, a high-voltage coil 34, an upper fastening bolt 35, a lower fastening bolt 36, a high-low voltage upper clamp piece 37 and a high-low voltage lower clamp piece 38; wherein,
an upper insulating cushion block 31 is arranged at the top of the low-voltage coil 33 and the high-voltage coil 34, a positioning block 31a of the upper insulating cushion block 31 is positioned between the low-voltage coil 33 and the high-voltage coil 34, the head of the upper fastening bolt 35 is placed in a counter bore 31b of the upper insulating cushion block 31 in a pouring mode, and a screw rod penetrates through a threaded hole of a high-low-voltage upper clamping piece 37 and is provided with an upper fastening nut 31 c;
the bottom of the low-voltage coil 33 and the bottom of the high-voltage coil 34 are provided with a lower insulating cushion block 32, a positioning block 32a of the lower insulating cushion block 32 is positioned between the low-voltage coil 33 and the high-voltage coil 34, the head of the lower fastening bolt 36 is placed in a counter bore 32b of the lower insulating cushion block 32 in a pouring mode, and a screw rod penetrates through a threaded hole of a high-low-pressure clamping piece 38 and is provided with a lower fastening nut 32 c.
It can be seen from the above scheme and fig. 3 that the dry-type transformer of the present invention uses the same insulating blocks 31 and 32, so that transformer manufacturers do not need to open different molds, thereby reducing the mold investment cost and the inventory cost.
In order to enhance the supporting force and the pressing force, the upper fastening bolt 35 and the lower fastening bolt 36 are further respectively provided with two large washers 39, and the two large washers 39 are respectively in contact with the upper insulating pad 31 and the lower insulating pad 32.
The high-low pressure upper clamping piece 37 and the high-low pressure lower clamping piece 38 are both steel plate bending pieces. In the above scheme, the upper insulating pad 31 and the lower insulating pad 32 are both insulating resin pads.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. The utility model provides an insulating pad for dry-type transformer, its characterized in that, insulating pad is including the pad body and the locating piece that have certain thickness, the sliding groove has been seted up to pad body one side, the locating piece slides and sets up in the sliding groove of pad body, still set up the counter bore that supplies the fastener to sink and insert on the pad body.
2. The insulating block for a dry transformer as set forth in claim 1, wherein said fasteners are fastening bolts.
3. A dry-type transformer comprising the insulating spacer of claim 1 or 2, wherein the insulating spacer comprises an upper insulating spacer and a lower insulating spacer having the same size;
the dry type transformer further includes: a low-voltage coil, a high-voltage coil, an upper fastening bolt, a lower fastening bolt, a high-low voltage upper clamping piece and a high-low voltage lower clamping piece, wherein,
the top parts of the low-voltage coil and the high-voltage coil are provided with upper insulating cushion blocks, positioning blocks of the upper insulating cushion blocks are positioned between the low-voltage coil and the high-voltage coil, the head parts of the upper fastening bolts are inversely placed in counter bores of the upper insulating cushion blocks, and the screw rods penetrate through threaded holes of the high-low-voltage upper clamping pieces and are provided with upper fastening nuts;
the bottom of the low-voltage coil and the bottom of the high-voltage coil are provided with lower insulating cushion blocks, positioning blocks of the lower insulating cushion blocks are positioned between the low-voltage coil and the high-voltage coil, the heads of the lower fastening bolts are placed in counter bores of the lower insulating cushion blocks, and the screws penetrate through threaded holes of the clamping pieces under high and low pressure and are provided with lower fastening nuts.
4. A dry-type transformer as claimed in claim 3, wherein the upper and lower fastening bolts are further respectively provided with two large washers which are respectively in contact with the upper and lower insulating spacers.
5. A dry-type transformer as claimed in claim 4, wherein said upper and lower clamps are bent pieces of steel plate.
6. A dry-type transformer as claimed in claim 5, wherein the upper insulating spacer and the lower insulating spacer are both insulating resin spacers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938243.4A CN105405617A (en) | 2015-12-16 | 2015-12-16 | Dry type transformer and insulating cushion block therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938243.4A CN105405617A (en) | 2015-12-16 | 2015-12-16 | Dry type transformer and insulating cushion block therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105405617A true CN105405617A (en) | 2016-03-16 |
Family
ID=55471040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510938243.4A Pending CN105405617A (en) | 2015-12-16 | 2015-12-16 | Dry type transformer and insulating cushion block therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105405617A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967988A (en) * | 2016-10-20 | 2018-04-27 | Ls 产电株式会社 | Ast resin transformer |
| CN109378196A (en) * | 2018-12-10 | 2019-02-22 | 镇江天力变压器有限公司 | A kind of New insulated cushion block |
-
2015
- 2015-12-16 CN CN201510938243.4A patent/CN105405617A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107967988A (en) * | 2016-10-20 | 2018-04-27 | Ls 产电株式会社 | Ast resin transformer |
| US10410785B2 (en) | 2016-10-20 | 2019-09-10 | Lsis Co., Ltd. | Cast resin transformer |
| CN109378196A (en) * | 2018-12-10 | 2019-02-22 | 镇江天力变压器有限公司 | A kind of New insulated cushion block |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160316 |
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| WD01 | Invention patent application deemed withdrawn after publication |