CN113450948A - Insulating tubular bus and insulating manufacturing method and device of insulating tubular bus - Google Patents
Insulating tubular bus and insulating manufacturing method and device of insulating tubular bus Download PDFInfo
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- CN113450948A CN113450948A CN202110810497.3A CN202110810497A CN113450948A CN 113450948 A CN113450948 A CN 113450948A CN 202110810497 A CN202110810497 A CN 202110810497A CN 113450948 A CN113450948 A CN 113450948A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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Abstract
The invention relates to an insulating tubular bus and an insulating manufacturing method and equipment of the insulating tubular bus. The insulating tubular bus comprises a hollow conductive tube; the hollow conductive pipe is externally provided with an insulating layer formed by sintering and curing charged insulating powder, and the insulating layer is externally provided with a shielding layer formed by sintering and curing charged shielding powder. The insulation manufacturing equipment comprises a powder conveying mechanism, a high-voltage electrostatic stage electrode, a movable supporting device and a curing and heating device. The invention is not influenced by the shape of the conductive tube when processing the insulation structure, can realize the manufacture of multilayer insulation and shielding, and the whole insulation manufacturing process can realize unmanned and automatic manufacture, thereby improving the stability of the product quality and greatly improving the production efficiency.
Description
Technical Field
The invention relates to the technical field of tubular buses and manufacturing methods thereof, in particular to an insulated tubular bus and an insulated manufacturing method and equipment of the insulated tubular bus.
Background
In the power engineering, conductor connection between a power transmission wire of a power grid and a transformer of a transformer substation, jumper wires in a power transmission line, connecting conductors in power equipment and overcurrent conductors in a high-current direct-current ice melting device all use tubular buses, and in an underground transformer substation, a subway transformer substation or some transformer substations with special requirements, in order to reduce the occupied area, the transformer substation is more compact, and various indexes such as the insulating property, the corrosion resistance and the like of the tubular buses are required to be greatly improved. The insulation production process of the insulating tubular bus currently used is generally carried out by wrapping an insulating tape. In the insulating tubular bus with different curvatures, the insulating tubular bus is still carried out manually, and the insulating tubular bus adopting the insulating resin pouring mode is also adopted, but before the resin pouring, a large amount of manual wrapping of various materials is still needed, and the curing time after the resin pouring is long, so that the delivery time is prolonged, and the customized products are required to be delivered as soon as possible, which is often the objective requirement of customers.
Disclosure of Invention
The invention aims to provide an insulating tubular bus and an insulating manufacturing method and equipment of the insulating tubular bus, which mainly solve the technical problems in the prior art.
To achieve the above object, the present invention is achieved as described above.
An insulating tubular bus comprises a hollow conductive tube; the method is characterized in that: the hollow conductive pipe is externally provided with an insulating layer formed by sintering and curing charged insulating powder, and the insulating layer is externally provided with a shielding layer formed by sintering and curing charged shielding powder.
The insulating tubular busbar is characterized in that: the insulating powder is an insulating powder which can be melted and solidified at a high temperature; the shielding powder is a mixture of insulating powder and conductive powder or conductive powder which can be melted and solidified at high temperature.
The insulating tubular busbar is characterized in that: the outer diameter of the hollow conductive tube is 30-200 mm, the thickness of the insulating layer is 1-100 mm, and the thickness of the shielding layer is 0.001-1 mm.
The method for manufacturing an insulation of an insulated tubular busbar as described above, comprising: it comprises the following steps:
charging the insulating powder and the shielding powder with high-voltage static electricity;
spraying insulating powder with high-voltage static electricity around the hollow conductive tube, and conveying the hollow conductive tube to a curing and heating device for sintering and curing after adsorbing the insulating powder to form an insulating layer;
spraying shielding powder with high-voltage static electricity to the periphery of a hollow conductive pipe with an insulating layer, and conveying the insulating layer to a curing and heating device for sintering and curing after adsorbing the shielding powder to form a shielding layer;
during the manufacturing process, the hollow conductive tube is grounded.
The insulation manufacturing method of the insulation tubular bus is characterized in that: the insulating powder and the shielding powder are charged with high-voltage static electricity through an electrode capable of outputting an adjustable static voltage of 1 ten thousand to 20 ten thousand volts.
The insulation manufacturing method of the insulation tubular bus is characterized in that: the insulating powder is epoxy resin powder which can be fused and solidified at high temperature, the sintering and solidifying temperature is 170-180 ℃, and the time is 2-4 minutes; the shielding powder is a mixture of epoxy resin powder and carbon powder which can be melted and solidified at high temperature, and the sintering and solidifying temperature is 170-180 ℃ for 3-4 minutes.
The insulation manufacturing method of the insulation tubular bus is characterized in that: the insulating layer is formed by spraying insulating powder with high-voltage static electricity around the hollow conductive tube for multiple times, adsorbing the insulating powder, and then sending the insulating powder into a curing and heating device for sintering and curing.
The insulation manufacturing method of the insulation tubular bus is characterized in that: the shielding layer is formed by spraying shielding powder with high-voltage static electricity on the periphery of a hollow conductive tube with an insulating layer for multiple times, adsorbing the shielding powder, sending the shielding powder into a curing and heating device, sintering and curing the shielding powder and forming the shielding layer with the required thickness.
An apparatus for carrying out the insulation manufacturing method of the insulated tubular busbar as described above, characterized in that: it comprises
A powder conveying mechanism for conveying the insulating powder and the shielding powder;
a high-voltage electrostatic stage for electrostatically charging the insulating powder and the shielding powder with a high voltage;
the movable supporting device is used for supporting the hollow conductive tube and sending the hollow conductive tube into the curing and heating device;
and the curing and heating device is used for sintering and curing the fed hollow conductive pipe adsorbing the insulating powder and the shielding powder and forming an insulating layer and a shielding layer.
The equipment is characterized in that: the high-voltage static electrode is a high-voltage output end of a high-voltage static generator or a powder electrostatic spraying gun.
The invention has the following advantages:
the insulating and shielding material is automatically adsorbed on the wall of the hollow conductive pipe by adopting an electrostatic adsorption mode in the insulating process, and the insulating and shielding material is not influenced by the shape of the conductive pipe and can be moved into the curing and heating device by the automatic moving device for sintering and curing.
The method and the equipment can realize unmanned and automatic whole insulation manufacturing process, thereby improving the stability of product quality and greatly improving the production efficiency.
Drawings
Fig. 1 is a schematic configuration diagram of an insulation manufacturing apparatus of an insulated tubular busbar according to the present invention.
Fig. 2 is a schematic structural view (before sintering and curing) of the insulated tubular busbar of the present invention.
Fig. 3 is a schematic view showing the structure of the insulated tubular busbar of the present invention (after sintering and curing).
In the figure: 1-hollow conductive tube, 2-insulating layer, 3-shielding layer; a-a powder conveying mechanism; b-a high voltage electrostatic stage; c-a movable support; d-a curing and heating device; e-an electrical ground; m-powder.
Detailed Description
Referring to fig. 2 and 3, the present invention discloses an insulated tubular bus. As shown in the figure: it comprises a hollow conductive tube 1; an insulating layer 2 formed by sintering and solidifying charged insulating powder is arranged outside the hollow conductive tube 1, and a shielding layer 3 formed by sintering and solidifying charged shielding powder is arranged outside the insulating layer 2.
In the invention, the hollow conductive tube 1 can adopt metal materials (such as copper, aluminum and the like) for electric conduction, and the outer diameter of the hollow conductive tube is 30-200 mm; the thickness of the insulating layer 2 is 1-100 mm, and the insulating powder can be epoxy resin powder which can be melted and solidified at high temperature; the thickness of the shielding layer 3 is 0.1-1 mm, and the shielding powder can be a mixture of epoxy resin powder and carbon powder which can be melted and solidified at high temperature (for example, the epoxy resin powder and the carbon powder are mixed according to a ratio of 1:1, wherein the carbon powder is helpful for forming the shielding effect of the shielding layer, and the epoxy resin powder is helpful for realizing the bonding of the two functional layers with the insulating layer which also adopts epoxy resin material).
The method for manufacturing the insulation of the insulated tubular busbar comprises the following steps:
charging the insulating powder and the shielding powder with high-voltage static electricity;
spraying insulating powder with high-voltage static electricity around the hollow conductive tube 1, and conveying the hollow conductive tube 1 to a curing and heating device for sintering and curing after adsorbing the insulating powder to form an insulating layer 2;
spraying shielding powder with high-voltage static electricity to the periphery of a hollow conductive tube 1 with an insulating layer 2, adsorbing the shielding powder by the insulating layer 2, and then sending the shielding powder into a curing and heating device for sintering and curing to form a shielding layer 3;
during the manufacturing process, the hollow conductive tube 1 is grounded (e.g., directly grounded or grounded with the aid of other processing devices).
The insulating powder and the shielding powder are charged with high-voltage static electricity through an electrode capable of outputting an adjustable static voltage of 1 ten thousand to 20 ten thousand volts.
The insulating powder is epoxy resin powder which can be fused and solidified at high temperature, the sintering and solidifying temperature is 170-180 ℃, and the time is 2-4 minutes; the shielding powder is a mixture of epoxy resin powder and carbon powder which can be melted and solidified at high temperature, and the sintering and solidifying temperature is 170-180 ℃ for 3-4 minutes.
Preferably, the insulating layer 2 is formed by spraying insulating powder charged with high voltage static electricity around the hollow conductive tube 1 for a plurality of times, adsorbing the insulating powder, and then sending the insulating powder to a curing and heating device for sintering and curing.
In a preferred embodiment, the shielding layer 3 is formed by spraying shielding powder with high voltage static electricity around the hollow conductive tube 1 having the insulating layer 2, adsorbing the shielding powder, and then feeding the shielding powder into a curing and heating device to be sintered and cured.
The time for adsorbing the insulating material and the curing time of each layer are not more than 10 minutes, so that the manufacture of multiple layers of insulation and shielding can be realized repeatedly, the whole insulation manufacturing process can be unmanned and automatic, the stability of the product quality is improved, and the production efficiency is also greatly improved.
An apparatus for carrying out the insulation manufacturing method of the insulated tubular busbar as described above, as shown in fig. 1, comprises:
and a powder conveying mechanism a for conveying the insulating powder and the shielding powder, the powder conveying mechanism a may be a conveying pipe.
And a high-voltage electrostatic stage B for charging the insulating powder and the shielding powder with high-voltage static electricity.
The movable supporting device C is used for supporting the hollow conductive tube 1 and sending the hollow conductive tube into the curing and heating device; the movable supporting device C plays a role of a moving platform bearing bus, can move the hollow conductive tube 1 in the mist formed by the sprayed powder materials, and then the charged powder materials can be automatically and uniformly adsorbed on the wall of the hollow conductive tube 1 due to electrostatic force without rotating the hollow conductive tube 1, so that a uniform adsorption layer can be formed on the tube wall. In addition, the movable support means C also has an electrical grounding point E, which assists the hollow contact tube 1 in achieving grounding during manufacture.
And the curing and heating device D is used for sintering and curing the fed hollow conductive tube 1 adsorbing the insulating powder and the shielding powder and forming an insulating layer and a shielding layer. The curing and heating device D may be an oven.
The high-voltage static electrode B is a high-voltage output end of a high-voltage static generator, the electrode capable of outputting adjustable static voltage of 1-20 ten thousand volts is a high-voltage output end of the high-voltage static generator, the static generator is universal equipment, and the voltage range can be customized and adjusted. Or a powder electrostatic spray gun (e.g., powder electrostatic spray guns of the brand name jinma, nuxin, germany, etc.).
In the present invention, the insulating powder may be epoxy resin powder or ultrafine Polytetrafluoroethylene (PTFE) powder. Besides carbon powder, the conductive powder can also adopt antimony doped tin dioxide nano conductive powder.
The shielding layer in the invention can also be made of conductive powder independently.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.
Claims (10)
1. An insulating tubular bus comprises a hollow conductive tube (1); the method is characterized in that: an insulating layer (2) formed by sintering and solidifying charged insulating powder is arranged outside the hollow conductive tube (1), and a shielding layer (3) formed by sintering and solidifying charged shielding powder is arranged outside the insulating layer (2).
2. The insulated tubular busbar according to claim 1, wherein: the insulating powder is an insulating powder which can be melted and solidified at a high temperature; the shielding powder is a mixture of insulating powder and conductive powder or conductive powder which can be melted and solidified at high temperature.
3. The insulated tubular busbar according to claim 2, wherein: the outer diameter of the hollow conductive tube (1) is 30-200 mm, the thickness of the insulating layer (2) is 1-100 mm, and the thickness of the shielding layer (3) is 0.001-1 mm.
4. The method of manufacturing insulation of the insulated tubular busbar according to claim 1, 2 or 3, wherein: it comprises the following steps:
charging the insulating powder and the shielding powder with high-voltage static electricity;
spraying insulating powder with high-voltage static electricity to the periphery of the hollow conductive tube (1), and conveying the hollow conductive tube (1) to a curing and heating device for sintering and curing after adsorbing the insulating powder to form an insulating layer (2);
spraying shielding powder with high-voltage static electricity to the periphery of a hollow conductive tube (1) with an insulating layer (2), and conveying the insulating layer (2) to a curing and heating device for sintering and curing after adsorbing the shielding powder to form a shielding layer (3);
during the manufacturing process, the hollow conductive tube (1) is grounded.
5. The method of manufacturing insulation of an insulated tubular busbar according to claim 4, wherein: the insulating powder and the shielding powder are charged with high-voltage static electricity through an electrode capable of outputting an adjustable static voltage of 1 ten thousand to 20 ten thousand volts.
6. The method of manufacturing insulation of an insulated tubular busbar according to claim 4, wherein: the insulating powder is epoxy resin powder which can be fused and solidified at high temperature, the sintering and solidifying temperature is 170-180 ℃, and the time is 2-4 minutes; the shielding powder is a mixture of epoxy resin powder and carbon powder which can be melted and solidified at high temperature, and the sintering and solidifying temperature is 170-180 ℃ for 3-4 minutes.
7. The method of manufacturing insulation of an insulated tubular busbar according to claim 4, wherein: the insulating layer (2) is formed by spraying insulating powder with high-voltage static electricity around the hollow conductive tube (1) for multiple times, adsorbing the insulating powder, and then sending the insulating powder into a curing and heating device for sintering and curing.
8. The method of manufacturing insulation of an insulated tubular busbar according to claim 4, wherein: the shielding layer (3) is formed by spraying shielding powder with high-voltage static electricity on the periphery of a hollow conductive tube (1) with an insulating layer (2) for multiple times, adsorbing the shielding powder, sending the shielding powder into a curing and heating device, sintering and curing the shielding powder and forming the shielding layer with the required thickness.
9. An apparatus for performing the insulation manufacturing method of the insulated tubular busbar according to claim 4, wherein: it comprises
A powder conveying mechanism (A) for conveying the insulating powder and the shielding powder;
a high-voltage static stage (B) for electrostatically charging the insulating powder and the shielding powder with a high voltage;
the movable supporting device (C) is used for supporting the hollow conductive tube (1) and sending the hollow conductive tube into the curing and heating device;
and the curing and heating device (D) is used for sintering and curing the fed hollow conductive pipe (1) adsorbing the insulating powder and the shielding powder and forming an insulating layer and a shielding layer.
10. The apparatus of claim 9, wherein: the high-voltage electrostatic stage electrode (B) is a high-voltage output end of a high-voltage electrostatic generator or a powder electrostatic spraying gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110810497.3A CN113450948A (en) | 2021-07-19 | 2021-07-19 | Insulating tubular bus and insulating manufacturing method and device of insulating tubular bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110810497.3A CN113450948A (en) | 2021-07-19 | 2021-07-19 | Insulating tubular bus and insulating manufacturing method and device of insulating tubular bus |
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| Publication Number | Publication Date |
|---|---|
| CN113450948A true CN113450948A (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110810497.3A Pending CN113450948A (en) | 2021-07-19 | 2021-07-19 | Insulating tubular bus and insulating manufacturing method and device of insulating tubular bus |
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| CN (1) | CN113450948A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437786A (en) * | 1999-12-28 | 2003-08-20 | 阿尔斯托姆(瑞士)有限公司 | Method for producing a high-quality insulation of electric conductors or conductor bundles of rotating electrical machines using spray sintering |
| US20040092064A1 (en) * | 2001-03-16 | 2004-05-13 | Thomas Baumann | Method for producing a bar-type conductor |
| US20050199418A1 (en) * | 2004-03-15 | 2005-09-15 | Abb Research Ltd. | High voltage bushing with field control material |
| CN111545368A (en) * | 2020-05-15 | 2020-08-18 | 潍坊东方钢管有限公司 | Lengthened electrostatic powder spray gun device |
| CN111755149A (en) * | 2020-06-17 | 2020-10-09 | 季青 | Compound shielding insulation tubular bus sleeve |
-
2021
- 2021-07-19 CN CN202110810497.3A patent/CN113450948A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1437786A (en) * | 1999-12-28 | 2003-08-20 | 阿尔斯托姆(瑞士)有限公司 | Method for producing a high-quality insulation of electric conductors or conductor bundles of rotating electrical machines using spray sintering |
| US20040092064A1 (en) * | 2001-03-16 | 2004-05-13 | Thomas Baumann | Method for producing a bar-type conductor |
| US20050199418A1 (en) * | 2004-03-15 | 2005-09-15 | Abb Research Ltd. | High voltage bushing with field control material |
| CN111545368A (en) * | 2020-05-15 | 2020-08-18 | 潍坊东方钢管有限公司 | Lengthened electrostatic powder spray gun device |
| CN111755149A (en) * | 2020-06-17 | 2020-10-09 | 季青 | Compound shielding insulation tubular bus sleeve |
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Application publication date: 20210928 |