阅读说明：本技术 一种干式变压器使用的通用气道绝缘板及其制造方法 (Universal air flue insulating plate for dry-type transformer and manufacturing method thereof ) 是由 张俊忠 于 2021-07-05 设计创作，主要内容包括：本发明公开了一种干式变压器使用的通用气道绝缘板,包括复合基板,复合基板上阵列有绝缘粒,绝缘粒之间形成可供冷却气流通过的气道,绝缘粒高度等于干式变压器所需气道的高度。以高强度绝缘性能材料做为绝缘板阵列有绝缘粒,形成气道高度。在相同高度下可实现快速裁剪,拼接使用无任何浪费,将原有撑条长度规格多的问题完全解决,只需根据厚度需求备或即可。可将原来几十种规格的撑条减少到6种。可以有效材料提升通用性,降低库存物料和管理成本。从产品性能方面看,点状支撑比条形支撑进一步减少了散热面遮挡,线圈散热能力更强。(The invention discloses a general air passage insulating plate used for a dry-type transformer, which comprises a composite substrate, wherein insulating particles are arrayed on the composite substrate, air passages for cooling air to pass are formed among the insulating particles, and the height of the insulating particles is equal to that of the air passages required by the dry-type transformer. The high-strength insulating material is used as an insulating plate array and is provided with insulating particles to form the height of the air channel. Can realize tailorring fast under the same height, the concatenation is used and is had no any waste, solves the many problems of original stay length specification completely, only need according to the thickness need prepare or can. The number of the original stays with dozens of specifications can be reduced to 6. The universality can be improved by effective materials, and the inventory material and management cost can be reduced. From the aspect of product performance, the point-shaped support further reduces the shielding of a heat dissipation surface compared with the strip-shaped support, and the heat dissipation capacity of the coil is stronger.)

1. The general air passage insulating plate for the dry-type transformer is characterized by comprising a composite substrate, wherein insulating particles are arrayed on the composite substrate, air passages for cooling air to pass are formed among the insulating particles, and the height of the insulating particles is equal to that of the air passages required by the dry-type transformer.

2. A universal airway insulation board for a dry transformer as claimed in claim 1 wherein the insulation pellet height is 6mm, 8mm, 10mm, 12mm, 14mm or 16 mm.

3. The insulating plate for a general air passage of a dry type transformer according to claim 1, wherein the composite substrate and the insulating particles are integrally pressed from high temperature resistant silicone rubber.

4. The insulating plate with a universal gas channel for a dry-type transformer according to claim 1, wherein the composite substrate and the insulating particles are formed and cured automatically by an APG process from epoxy resin.

5. A universal airway insulation board for a dry-type transformer as claimed in claim 1 wherein the composite substrate is 0.8-2.3mm thick.

6. The general air passage insulating plate for the dry-type transformer as claimed in claim 1, wherein the temperature resistant range of the composite substrate is 160 ℃ -260 ℃.

7. A universal airway insulation board for dry type transformers according to claim 1 wherein the insulation particles are stamped from the composite substrate.

8. A general air flue insulating plate used for a dry type transformer and a manufacturing method thereof are characterized by comprising the following steps:

s01, stirring the high-temperature-resistant silicon rubber, the curing agent and the organic phosphorus flame retardant for 30-40 min while vacuumizing at the temperature of 25-36 ℃;

s02, weighing the mixture with the corresponding weight according to the specification of the formed product;

s03, heating the die to 180-190 ℃, injecting the mixture, and cooling to 155-162 ℃.

S04, pressurizing the die, wherein the pressurizing pressure is 15-19 MPa, and the pressure is kept for 35-45 min;

s05, continuously keeping the temperature at 130-140 ℃ for 40 min;

s06, taking out the product and cleaning the die cavity.

9. The universal gas channel insulating board for the dry-type transformer as claimed in claim 8, wherein the curing agent accounts for 0.5-1.5 wt%, and the organic phosphorus flame retardant accounts for 1.2-1.8 wt%.

Technical Field

The invention relates to the technical field of electric power transportation, in particular to a general air flue insulating plate used for a dry-type transformer and a manufacturing method thereof.

Background

The low-voltage foil winding stay of the existing dry-type transformer is a glass wire drawing stay, the cross section of the low-voltage foil winding stay is mostly H-shaped or rectangular, and the low-voltage foil winding stay is placed inside a coil at intervals in a strip form. However, different sizes of dry-type transformers result in different strut lengths, and different sizes of air passages and hence struts are required for different dry-type transformers. Therefore, manufacturers of dry-type transformers generally need to prepare stays with dozens of specifications, and the dry-type transformers are extremely poor in universality and high in management cost due to multiple material requirements. Therefore, a general air passage insulating plate used by the dry-type transformer is needed to reduce the inventory material and management cost of manufacturers.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides a universal air duct insulating plate for a dry-type transformer and a manufacturing method thereof.

In order to achieve the purpose, the invention adopts the following scheme:

a general air passage insulating plate used for a dry-type transformer comprises a composite substrate, insulating particles are arrayed on the composite substrate, air passages allowing cooling air to pass through are formed among the insulating particles, and the height of the insulating particles is equal to that of the air passages required by the dry-type transformer.

Further, the height of the insulating particles is 6mm, 8mm, 10mm, 12mm, 14mm or 16 mm.

Furthermore, the composite substrate and the insulating particles are formed by integrally pressing high-temperature-resistant silicon rubber.

Furthermore, the composite substrate and the insulating particles are formed by automatically molding and curing epoxy resin through an APG process.

Furthermore, the thickness of the composite substrate is 0.8-2.3 mm.

Furthermore, the temperature resistance range of the composite substrate is 160-260 ℃.

Furthermore, the insulating particles are formed by stamping the composite substrate. Before the composite substrate is molded, the composite substrate is stamped by a roller with a bulge so that the corresponding bulge area is deformed and protrudes outwards to form the insulating particles.

A general air flue insulating plate for a dry-type transformer and a manufacturing method thereof comprise the following steps:

s01, stirring the high-temperature-resistant silicon rubber, the curing agent and the organic phosphorus flame retardant for 30-40 min while vacuumizing at the temperature of 25-36 ℃;

s02, weighing the mixture with the corresponding weight according to the specification of the formed product;

s03, heating the die to 180-190 ℃, injecting the mixture, and cooling to 155-162 ℃.

S04, pressurizing the die, wherein the pressurizing pressure is 15-19 MPa, and the pressure is kept for 35-45 min;

s05, continuously keeping the temperature at 130-140 ℃ for 40 min;

s06, taking out the product and cleaning the die cavity.

Furthermore, the weight percentage of the curing agent is 0.5 to 1.5 percent, and the weight percentage of the organic phosphorus flame retardant is 1.2 to 1.8 percent.

Compared with the prior art, the invention has the following advantages: the high-strength insulating material is used as an insulating plate array and is provided with insulating particles to form the height of the air channel. Can realize tailorring fast under the same height, the concatenation is used and is had no any waste, solves the many problems of original stay length specification completely, only need according to the thickness need prepare or can. The number of the original stays with dozens of specifications can be reduced to 6. The universality can be improved by effective materials, and the inventory material and management cost can be reduced. From the aspect of product performance, the point-shaped support further reduces the shielding of a heat dissipation surface compared with the strip-shaped support, and the heat dissipation capacity of the coil is stronger.

Drawings

The present application will be described in further detail with reference to the following drawings and detailed description.

Fig. 1 is a schematic front view of a general air passage insulating plate used in a dry type transformer according to the present invention;

fig. 2 is a top view of a universal gas duct insulation plate used in a dry-type transformer of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Example one

As shown in fig. 1, a general air passage insulating plate for a dry-type transformer includes a composite substrate 1, wherein insulating particles 2 are arrayed on the composite substrate 1, air passages for cooling air to pass through are formed between the insulating particles 2, and the height of the insulating particles 2 is equal to the height of the air passages required by the dry-type transformer. As shown in fig. 2, the insulating plate array made of high-strength insulating material has insulating particles 2, which form the height of the air channel. The point-shaped support further reduces the shielding of a heat radiating surface compared with the strip-shaped support, and the heat radiating capacity of the coil is stronger.

Preferably, the height of the insulating pellets 2 is 6mm, 8mm, 10mm, 12mm, 14mm or 16 mm. The number of the original stays with dozens of specifications can be reduced to 6.

Preferably, the composite substrate 1 and the insulating particles 2 are formed by integrally pressing high-temperature-resistant silicon rubber. The product has high integral strength and improves the working stability of the product.

Preferably, the thickness of the composite substrate 1 is 0.8 to 2.3 mm.

Preferably, the temperature resistance range of the composite substrate 1 is 160-260 ℃.

A general air flue insulating plate for a dry-type transformer and a manufacturing method thereof comprise the following steps:

s01, stirring the high temperature resistant silicon rubber, the curing agent and the organic phosphorus flame retardant for 30-40 min while vacuumizing at the temperature of 25-36 ℃. In the embodiment, the high temperature resistant silicon rubber, the curing agent and the organic phosphorus flame retardant are stirred for 40min while vacuumizing at the temperature of 30 ℃.

S02, weighing the mixture with the corresponding weight according to the specification of the formed product;

s03, heating the die to 180-190 ℃, injecting the mixture, and cooling to 155-162 ℃. In this example, the mold was heated to 190 ℃ and the mixture was poured and then cooled to 162 DEG C

S04, pressurizing the die, wherein the pressurizing pressure is 15-19 MPa, and the pressure is kept for 35-45 min. In this example, the mold was pressurized at 18MPa and held at 45 min.

S05 the temperature is kept at 130-140 deg.C for 40min, in this example the temperature is kept at 130 deg.C for 40min

S06, taking out the product and cleaning the die cavity.

Preferably, the weight ratio of the curing agent is 0.5-1.5%, and the weight ratio of the organic phosphorus flame retardant is 1.2-1.8%. In this example, the curing agent was 1.5% by weight and the organic phosphorus flame retardant was 1.5% by weight.

Example two

As shown in fig. 1, a general air passage insulating plate for a dry-type transformer includes a composite substrate 1, wherein insulating particles 2 are arrayed on the composite substrate 1, as shown in fig. 2, air passages for cooling air to pass through are formed between the insulating particles 2, and the height of the insulating particles 2 is equal to the height of the air passages required by the dry-type transformer. The insulating plate array with high-strength insulating material has insulating particles 2 to form the height of the air channel. The point-shaped support further reduces the shielding of a heat radiating surface compared with the strip-shaped support, and the heat radiating capacity of the coil is stronger.

Preferably, the height of the insulating pellets 2 is 6mm, 8mm, 10mm, 12mm, 14mm or 16 mm. The number of the original stays with dozens of specifications can be reduced to 6.

Preferably, the composite substrate 1 and the insulating particles 2 are formed and cured automatically by an APG process from epoxy resin.

Preferably, the thickness of the composite substrate 1 is 0.8 to 2.3 mm.

Preferably, the temperature resistance range of the composite substrate 1 is 160-260 ℃.

Compared with the prior art, the invention has the following advantages: the insulating plate array with high-strength insulating material has insulating particles 2 to form the height of the air channel. Can realize tailorring fast under the same height, the concatenation is used and is had no any waste, solves the many problems of original stay length specification completely, only need according to the thickness need prepare or can. The number of the original stays with dozens of specifications can be reduced to 6. The universality can be improved by effective materials, and the inventory material and management cost can be reduced. From the aspect of product performance, the point-shaped support further reduces the shielding of a heat dissipation surface compared with the strip-shaped support, and the heat dissipation capacity of the coil is stronger.

EXAMPLE III

As shown in fig. 1, a general air passage insulating plate for a dry-type transformer includes a composite substrate 1, wherein insulating particles 2 are arrayed on the composite substrate 1, air passages for cooling air to pass through are formed between the insulating particles 2, and the height of the insulating particles 2 is equal to the height of the air passages required by the dry-type transformer. As shown in fig. 2, the insulating plate array made of high-strength insulating material has insulating particles 2, which form the height of the air channel. The point-shaped support further reduces the shielding of a heat radiating surface compared with the strip-shaped support, and the heat radiating capacity of the coil is stronger.

Preferably, the height of the insulating pellets 2 is 6mm, 8mm, 10mm, 12mm, 14mm or 16 mm. The number of the original stays with dozens of specifications can be reduced to 6.

Preferably, the insulating particles 2 are formed by imprinting the composite substrate 1. Before the composite substrate 1 is formed, the composite substrate 1 is stamped by a roller with bulges to enable corresponding bulge areas to deform and protrude outwards to form insulating particles 2

Preferably, the thickness of the composite substrate 1 is 0.8 to 2.3 mm.

Preferably, the temperature resistance range of the composite substrate 1 is 160-260 ℃.

The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.