CN210837454U

CN210837454U - Multi-voltage on-load dry-type transformer for testing large air conditioning unit

Info

Publication number: CN210837454U
Application number: CN201921419231.0U
Authority: CN
Inventors: 刘亚军; 俞勇; 钟佶
Original assignee: Shanghai Abb Radio And Television Co ltd
Current assignee: Anyige electric industrial system (Shanghai) Co.,Ltd.
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-23
Anticipated expiration: 2029-08-28

Abstract

The utility model relates to a be used for test of large-scale air conditioning unit to have voltage to carry dry-type transformer, constitute including transformer core assembly, 4 groups secondary coil lead wires, 4 groups secondary coil, primary coil, coil cushion, transformer base. When the transformer iron core is assembled, the upper iron yoke is left unassembled, 4 secondary coils are sleeved in sequence, then the primary coil is sleeved, the 0.4KV secondary coil is independent, the 11KV, 6.3KV and 3.3KV secondary coils adopt a series connection structure, and after 5 coils are aligned, the insulating cushion blocks are fixed on the iron core clamping pieces through fastening bolts. The utility model discloses simple structure, overall arrangement are exquisite, and the electromagnetism calculates the accuracy, can satisfy the requirement of temperature rise, impedance, the transformation ratio of different coils.

Description

Multi-voltage on-load dry-type transformer for testing large air conditioning unit

Technical Field

The utility model relates to a dry-type transformer, concretely relates to simple structure, anti arc ability reinforce to solve IP protection level problem, can extensively be used for various types be used for the test of large-scale air conditioning unit to have the dry-type transformer of carrying of multivoltage.

Background

The incoming line voltage of the primary winding of the dry-type transformer is 10KV, and the secondary outgoing line voltage of the dry-type transformer needs to output various voltages of 11KV, 6.3KV,3.3KV and 0.4KV in order to meet the debugging requirements of large air conditioning units with different voltages. The voltage of the traditional transformer is divided into an incoming line and an outgoing line which are respectively provided with a group of voltages. The developed new transformer outputs 4 groups of voltages and can run at full capacity, and the on-load voltage regulation is introduced at the input power supply side, so that the accuracy of output voltage is ensured. The transformer has a complex structure, needs to be arranged delicately, is accurate in electromagnetic calculation, and meets the requirements of temperature rise, impedance and transformation ratio of different coils.

SUMMERY OF THE UTILITY MODEL

To the above problem, the main object of the present invention is to provide a multi-voltage on-load dry transformer for testing large air conditioning units, which has a simple structure, is resistant to arcing, solves the problem of IP protection level, and can be widely used for various types of large air conditioning units.

The utility model discloses a solve above-mentioned technical problem through following technical scheme: a multi-voltage on-load dry-type transformer for large-scale air conditioning unit testing comprises:

the transformer comprises a shell, a transformer base, a winding and a winding shell; the transformer comprises a transformer iron core, an upper iron yoke, a lower iron yoke and an iron core clamping piece; an upper iron core clamping piece and a lower iron core clamping piece are respectively arranged on two sides of the upper iron yoke and the lower iron yoke.

Three groups of windings are arranged on the transformer base; each set of windings comprises: transformer core, upper iron yoke, lower iron yoke.

Each group of transformer iron cores is provided with a group of primary coils and a plurality of groups of secondary coils, and gas channels are arranged between adjacent coils; and secondary coil outgoing lines of the secondary coil are fixedly arranged on the iron core clamping piece.

A group of primary coils and a plurality of groups of secondary coils are aligned and then fixed between the upper iron core clamp and the lower iron core clamp; the upper and lower clamping pieces are connected through a pulling plate.

In a specific embodiment of the present invention; the multi-group secondary coil comprises four groups of secondary coils, which are respectively: 11KV secondary coil, 6.3KV secondary coil, 3.3KV secondary coil and 0.4KV secondary coil; wherein: the 11KV, 6.3KV and 3.3KV secondary coils are in a series connection structure, and the 0.4KV secondary coils are independent.

In a specific embodiment of the present invention; when the transformer iron core is assembled, the transformer iron core is pressed by an upper iron core clamping piece and a lower iron core clamping piece, and the upper clamping piece and the lower clamping piece are connected through a pulling plate; before the secondary coil is assembled, an insulating cushion block is installed on the lower clamping piece, then 5 coils are aligned and then placed on the insulating cushion block, the insulating cushion block is also placed on the upper portion of the coil, and a bolt, a nut and a gasket are installed on the upper clamping piece and correspond to the insulating cushion block to tightly press the insulating cushion block, so that 5 groups of coils are tightly pressed.

In a specific embodiment of the present invention; and fans are arranged on two sides of the lower iron yoke.

The utility model discloses an actively advance the effect and lie in: the utility model provides a be used for test of large-scale air conditioning unit to have the dry-type transformer that carries of multi-voltage has following advantage: the utility model discloses simple structure, overall arrangement are exquisite, and the electromagnetism calculates the accuracy, can satisfy the requirement of temperature rise, impedance, the transformation ratio of different coils.

Drawings

Fig. 1 is a front view of the overall structure diagram of the present invention.

Fig. 2 is a left side view (partially in section) of fig. 1.

Fig. 3 is a schematic diagram of the series connection of the secondary coils.

The utility model discloses the name that well reference numeral corresponds:

the transformer comprises a transformer iron core 1, a primary coil 2, an 11KV secondary coil 3, a 6.3KV secondary coil 4, a 3.3KV secondary coil 5, a 0.4KV secondary coil 6, a 6.3KV secondary coil series lead 7, a 6.3KV secondary coil outgoing line 8, an 11KV secondary coil outgoing line 9, a 3.3KV secondary coil outgoing line 10, an 11KV secondary coil series lead 11, an upper iron yoke 12, a lower iron yoke 13, an insulating cushion block 14, an upper iron core clamping piece 15, a lower iron core clamping piece 16 and a transformer base 17.

Detailed Description

The following provides a preferred embodiment of the present invention with reference to the accompanying drawings to explain the technical solutions of the present invention in detail.

Fig. 1 is a front view of the overall structure diagram of the present invention, and fig. 2 is a left side view (partially cut away) of fig. 1. As shown in fig. 1 and 2: the utility model provides a be used for test of large-scale air conditioning unit to have multi-voltage to carry dry-type transformer for test of large-scale air conditioning unit has multi-voltage to carry dry-type transformer includes: a shell, a transformer base 17, a winding and a winding shell; the transformer comprises a transformer iron core 1, an upper iron yoke 12, a lower iron yoke 13 and an iron core clamping piece 14; an upper core clamp 15 and a lower core clamp 16 are respectively mounted on both sides of the upper yoke 12 and the lower yoke 13.

Three groups of windings are arranged on the transformer base 17; each set of windings comprises: transformer core 1, upper yoke 12, lower yoke 13.

Each group of transformer iron cores is provided with a group of primary coils 2 and a plurality of groups of secondary coils, and gas channels are arranged between adjacent coils; and secondary coil outgoing lines of the secondary coil are fixedly arranged on the iron core clamping piece.

In a specific implementation, the gas channel may be set at 5-20 cm.

After the primary coils 2 and the secondary coils are aligned, the insulating cushion blocks are fixed between the upper iron core clamp and the lower iron core clamp through fastening bolts; the upper and lower clamping pieces are connected through a pulling plate.

The multi-group secondary coil comprises four groups of secondary coils, which are respectively: 11KV secondary coil 3, 6.3KV secondary coil 4, 3.3KV secondary coil 5 and 0.4KV secondary coil 6; wherein: the 11KV, 6.3KV and 3.3KV secondary coils adopt a series connection structure, referring to fig. 3, and the 0.4KV secondary coils are independent.

Fig. 1 also includes: a 6.3KV secondary coil series lead 7, a 6.3KV secondary coil outgoing line 8, an 11KV secondary coil outgoing line 9, a 3.3KV secondary coil outgoing line 10 and an 11KV secondary coil series lead 11, which are arranged on an upper iron core clamp 15.

In a specific implementation process, fans are installed on two sides of the lower iron yoke 13.

When the transformer iron core is assembled, the transformer iron core is pressed by an upper iron core clamping piece and a lower iron core clamping piece, and the upper clamping piece and the lower clamping piece are connected through a pulling plate and are used for hoisting and fixing; before the secondary coil is assembled, an insulating cushion block is installed on the lower clamping piece, then 5 coils are aligned and then placed on the insulating cushion block 14, the insulating cushion block 14 is also placed on the upper portion of each coil, a bolt, a nut and a washer are installed on the upper clamping piece and correspond to the insulating cushion block, the insulating cushion block is pressed tightly, and therefore 5 groups of coils are pressed tightly, the iron core assembly and the coils are fixedly installed, and looseness does not exist.

Every layer of silicon steel sheet of transformer core cuts out into 2 iron core yoke pieces and 3 iron core column pieces respectively, forms at the plane concatenation, then stacks up the number of piles of certain quantity according to the drawing requirement, reaches the thickness that the drawing required, compresses tightly with 4 channel-section steel shape folder at upper and lower iron yoke position at last, installs 6 arm-stays at 3 looks iron core column positions for couple between the folder from top to bottom, pile up whole iron core piece through the bolt at last and compress tightly fixedly.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a be used for test of large-scale air conditioning unit to have a voltage to carry dry-type transformer which characterized in that: the multi-voltage on-load dry type transformer for the test of the large air conditioning unit comprises:

the transformer comprises a shell, a transformer base, a winding and a winding shell; the transformer comprises a transformer iron core, an upper iron yoke, a lower iron yoke and an iron core clamping piece; an upper iron core clamping piece and a lower iron core clamping piece are respectively arranged on two sides of the upper iron yoke and the lower iron yoke;

three groups of windings are arranged on the transformer base; each set of windings comprises: the transformer comprises a transformer iron core, an upper iron yoke and a lower iron yoke;

each group of transformer iron cores is provided with a group of primary coils and a plurality of groups of secondary coils, and gas channels are arranged between adjacent coils; secondary coil outgoing lines of the secondary coils are fixedly arranged on the iron core clamping piece;

2. The multi-voltage on-load dry-type transformer for the large air conditioning unit test according to claim 1, characterized in that: the multi-group secondary coil comprises four groups of secondary coils, which are respectively: 11KV secondary coil, 6.3KV secondary coil, 3.3KV secondary coil and 0.4KV secondary coil; wherein: the 11KV, 6.3KV and 3.3KV secondary coils are in a series connection structure, and the 0.4KV secondary coils are independent.

3. The multi-voltage on-load dry-type transformer for the large air conditioning unit test according to claim 1, characterized in that: when the transformer iron core is assembled, the transformer iron core is pressed by an upper iron core clamping piece and a lower iron core clamping piece, and the upper clamping piece and the lower clamping piece are connected through a pulling plate; before the secondary coil is assembled, an insulating cushion block is installed on a lower clamping piece, then 5 coils are aligned and then placed on the insulating cushion block, the insulating cushion block is also placed on the upper portion of the coil, and a bolt, a nut and a gasket are installed on the upper clamping piece and correspond to the insulating cushion block to tightly press the insulating cushion block, so that 5 groups of coils are tightly pressed.

4. The multi-voltage on-load dry-type transformer for the large air conditioning unit test according to claim 1, characterized in that: and fans are arranged on two sides of the lower iron yoke.