Transformer with split and pluggable iron core for screening test

A screening test and transformer technology, applied in the field of transformers, can solve the problems of substandard partial discharge level of transformers, a large number of manpower and man-hours, affecting the production cycle, etc., to achieve stable and reliable iron core connection quality, save manpower and man-hours, and ensure internal quality. Effect

Inactive Publication Date: 2017-07-14
WOLONG ELECTRIC GRP CO LTD +1
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AI-Extracted Technical Summary

Problems solved by technology

[0002] In the manufacturing process of transformers, the test of transformers is a very strict means of checking. In the test and detection of large transformers, sometimes the following problems occur. Remove the problematic coil for processing or in-depth analysis. Removing the coil means removing the upper iron yoke. The upper iron yoke is a piece of silicon steel sheet. Removing the upper iron y...
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Method used

In order to make the plug-in structure more stable and reliable, the two ends of the upper iron core laminations 101 are concave and convex outward at the end interval, and vertically penetrate to form the upper iron core slots 102 arranged at intervals, and the lower iron core The two ends of the core lamination 201 are concave and convex vertically at intervals, and penetrate horizontally to form lower iron core insertion grooves 202 arranged at intervals, and the upper iron core insertion grooves 102 and the lower iron core insertion grooves 202 alternate with each other. The two ends of the upper iron core laminations 101 and the lower iron core laminations 201 are alternately inserted into the insertion grooves of the other side. Alternate plugging, the plugging structure is more stable.
In order to obtain firm support, each protruding part of the upper core lamination 101 is provided with a through hole, and a screw rod is provided in the through hole, and a screw rod between every two adjacent protruding parts is provided with a Insulation spacer blocks 12 for separating and fixing the convex portion of the upper iron core laminations 101 . The protruding parts of the upper core laminations 101 are connected by screws, and adjacent laminations are separated by insulating spacers 12, so that the protruding parts of the upper core laminations 101 are firmly supported.
In order to protect the iron core, both sides of the upper iron core 1 are respectively equipped with an in-line upper iron core shield 10, and both sides of the lower iron core 2 are respectively equipped with a U-shaped lower iron core shi...
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Abstract

A transformer with a split and pluggable iron core for screening test relates to the field of transformers. Time is wasted and a trouble is brought during plug-in and plug-out of a transformer iron core, and the iron core is easy to damage when the iron core is disassembled and plugged. The transformer comprises iron cores, an excitation coil, a response coil, an insulation support plate, a support rack and a lifting rack, wherein the excitation coil and the response coil sleeve at outer sides of the iron cores, the iron cores are two posts of iron cores formed by lamination of lamination sheets, each iron core comprises an upper iron core and a lower iron core, the lower iron core is in a U shape containing two iron core posts, and the upper iron core is line-shaped and can be connected to the tops of the lower iron cores in a pluggable way. With the transformer disclosed by the technical scheme, the upper iron core can be integratedly plugged in and plugged out, the transformer is simple, convenient and rapid, and is low in plugging influence and high in electrical stability, and the iron core connection quality is still stable and reliable.

Application Domain

Technology Topic

Electrical stabilityEngineering +4

Image

  • Transformer with split and pluggable iron core for screening test
  • Transformer with split and pluggable iron core for screening test
  • Transformer with split and pluggable iron core for screening test

Examples

  • Experimental program(1)

Example Embodiment

[0022] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings of the specification.
[0023] Such as Figure 1-5 As shown, an iron core can be detached and plugged for screening test transformer, including iron core, excitation coil 3, response coil 4, insulating support plate 5, bracket 7, lifting frame 6, excitation coil 3 and response coil 4 set On the outside of the iron core, the iron core is a two-column iron core formed by stacking laminations. The iron core is composed of an upper iron core 1 and a lower iron core 2. The lower iron core 2 is U-shaped with two iron core posts. The iron core 1 is in a straight shape, and the upper iron core 1 is pluggably connected to the top of the lower iron core 2.
[0024] For stable and rapid connection, both ends of the inline upper iron core 1 and the U-shaped lower iron core 2 are plug-in connections. Plug-in connection, convenient and fast, convenient connection and positioning, and stable structure.
[0025] In order to make the insertion structure more stable and reliable, the two ends of the upper iron core lamination 101 are concave and convex in the end direction, and penetrate vertically to form the upper iron core insertion grooves 102 arranged at intervals, and the lower iron core laminations The two ends of 201 are vertically spaced with inner concave and outer convex, and penetrate horizontally to form lower iron core insertion grooves 202 arranged at intervals. The upper iron core insertion grooves 102 and the lower iron core insertion grooves 202 alternate with each other, so that the upper The two ends of the core lamination 101 and the two ends of the lower core lamination 201 are alternately inserted into the sockets of each other. Alternate plug-in, the plug-in structure is more stable.
[0026] In order to obtain firm support, each convex part of the upper iron core lamination 101 is provided with a through hole, and a screw is provided in the through hole, and the screw between every two adjacent convex parts is provided for separation and fixing. The insulating spacer block 12 of the convex part of the upper core lamination 101. The convex parts of the upper iron core laminations 101 are connected by screws, and the adjacent laminations are separated by insulating spacers 12, so that the convex parts of the upper iron core laminations 101 are firmly supported.
[0027] In order to protect the iron core, both sides of the upper iron core 1 are equipped with an in-line upper iron core guard plate 10, and both sides of the lower iron core 2 are equipped with a U-shaped lower iron core guard plate 13 respectively. The protective plate with the same shape as the iron core has good protection effect.
[0028] In order to realize the insertion guidance and positioning, the upper iron core 1 and the lower iron core 2 are equipped with a guiding structure and a positioning structure during insertion. Through the guiding and positioning structure, the upper iron core 1 and the lower iron core 2 can be plugged in accurately and quickly.
[0029] In order to facilitate and accurately perform insertion guidance and preliminary positioning, the guiding structure includes a vertical mounting guide plate 9 connected to the outer convex portion of the lower iron core lamination 201, and the top of the mounting guide plate 9 is a pointed top. By installing the guide plate 9 on the spire, there is no need to precisely align the insertion position during insertion. The inclination of the spire will automatically and accurately perform the insertion guidance and preliminary positioning.
[0030] In order to achieve precise positioning, the positioning structure includes a positioning hole 1001 provided in the upper iron core 1 and a positioning pin 11 provided in the lower iron core 2 for inserting into the positioning hole 1001. The positioning pin 11 and the positioning hole 1001 have a simple structure and convenient positioning. Under the guidance of the mounting guide plate 9, precise positioning can be further realized.
[0031] In order to prevent collisions during positioning, positioning holes 1001 are vertically arranged at the lower part of each upper iron core guard plate 10, and positioning pins 11 are vertically arranged at both ends of each lower iron core guard plate 13. The positioning pin 11 is relatively close to the positioning hole 1001, the positioning pin 11 is relatively short, and the cost is low, and when the upper iron core 1 is inserted, the collision phenomenon is not easy to occur.
[0032] In order to facilitate the upper iron core 1 to move up and down when inserted, the upper iron core guard plates 10 on both sides of the upper iron core 1 are equipped with lifting rings 8 for lifting the upper iron core 1. It is convenient for the upper core 1 to be lifted, separated and inserted.
[0033] When installing the upper iron core, move the upper iron core 1 above the lower iron core 2 through the lifting ring 8, and align the upper iron core insertion slots 102 at both ends of the upper iron core 1 with the lower iron core 2 in a one-to-one correspondence. The mounting guides 9 at both ends are slowly lowered until the mounting guide 9 is inserted, and then continue to be lowered. At the same time, note that the positioning pin 11 is inserted into the positioning hole 1001 until it is lowered to the end, so that the upper iron core lamination 101 and the lower iron core lamination 201 Cross-insertion is inserted into the counterpart's socket; when the upper iron core 1 is inserted and unplugged, the lifting ring 8 is used to lift the upper iron core 1 as a whole to replace the traditional manual insertion and unplug of the upper iron yoke. It is simple, convenient and fast, with good plug-in quality and high electrical stability.
[0034] the above Figure 1-5 The shown transformer for screening tests with detachable and pluggable iron cores is a specific embodiment of the present invention, which has already embodied the essential features and progress of the present invention. It can be used according to actual needs and under the enlightenment of the present invention, Equivalent modifications to its shape, structure, etc. are all within the scope of protection of this scheme.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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