CN215725144U

CN215725144U - Screen protection insulating sleeve

Info

Publication number: CN215725144U
Application number: CN202122118797.3U
Authority: CN
Inventors: 魏育军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-02-01
Anticipated expiration: 2031-09-03

Abstract

The screen protection insulating external member is provided with a vertical surface structure and a horizontal surface structure which are molded and cured into a whole by adopting a multi-layer material, wherein the vertical surface structure is an arc-shaped thin wall formed by equally dividing a cylinder according to the circumference, and the horizontal surface structure is a fan-shaped thin wall which extends outwards along the radial direction at the lower end of the vertical surface structure; the facade structure comprises a first mica paper, a second mica paper, a first glass fiber cloth, a first mica plate, a second glass fiber cloth, a third mica paper and a fourth mica paper which are sequentially stacked, and all the layers are laminated through high-temperature glue; the horizontal plane structure comprises a first mica paper, a second mica paper, a first glass fiber cloth, a second glass fiber cloth, a third mica paper and a fourth mica paper which are born in the vertical plane structure, and further comprises a second mica plate and a third mica plate which are stacked between the first glass fiber cloth and the second glass fiber cloth. The protective screen unit provides reliable insulation protection for the part which is easy to be punctured by electric arcs, and can effectively prevent the safety accidents caused by the cooling water leaking into the furnace body due to the fact that the electric arcs puncture the protective screen unit.

Description

Screen protection insulating sleeve

Technical Field

The utility model relates to the technical field of high-frequency calcium carbide furnaces, in particular to a shield insulation sleeve.

Background

The high-frequency calcium carbide furnace is a main device for producing calcium carbide (calcium carbide), and the production principle is that high-frequency and high-voltage electric arcs are released through electrodes in a furnace body, and the electric arcs are used for generating high temperature so that coke and calcium oxide are subjected to melting reaction to generate the calcium carbide.

In the prior art, an electrode protective screen is important equipment on a high-frequency calcium carbide furnace. As shown in fig. 1, the electrode shield 1 is generally formed of a plurality of shield units 11 having the same shape, and the shield units 11 are stainless steel bodies having cooling water circulation units inside. The outside of electrode protection screen 1 is the furnace chamber of high frequency carbide stove promptly, has the high temperature radiation of thousands of degrees centigrade that electrified molten state carbide leads to in the furnace chamber, and the inside of electrode protection screen 1 has internal equipments such as electrode, contact element, low ring hose, electrode barrel, and electrode protection screen 1 plays high temperature thermal insulation and insulating protection to internal equipments.

The applicant researches and discovers that the electrode protection screen 1 shown in fig. 1 has the hidden danger that the lower end of the protection screen unit 11 is easy to be punctured by electric arcs, once the lower end of the protection screen unit 11 is punctured by the electric arcs, cooling water is leaked into a furnace body, and serious safety accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a shield insulation external member which can apply reliable insulation protection to the lower end of a shield unit of an electrode shield in the prior art so as to prevent safety accidents caused by cooling water leakage entering a furnace body due to arc breakdown of the shield unit.

In order to achieve the above object, the present invention adopts the following technical solutions.

The screen protection insulating external member is provided with a vertical surface structure and a horizontal surface structure which are molded and cured into a whole by adopting a multi-layer material, wherein the vertical surface structure is an arc-shaped thin wall formed by equally dividing a cylinder according to the circumference, and the horizontal surface structure is a fan-shaped thin wall which extends outwards along the radial direction at the lower end of the vertical surface structure;

wherein, a plurality of screw through holes are arranged on the vertical surface structure along the radial direction;

the facade structure comprises a first mica paper, a second mica paper, a first glass fiber cloth, a first mica plate, a second glass fiber cloth, a third mica paper and a fourth mica paper which are sequentially stacked, wherein the layers are bonded through high-temperature glue;

the horizontal plane structure comprises first mica paper, second mica paper, first glass fiber cloth, second glass fiber cloth, third mica paper and fourth mica paper which are born in the vertical plane structure, and further comprises a second mica plate and a third mica plate which are stacked between the first glass fiber cloth and the second glass fiber cloth, and all the layers are also attached through high-temperature glue.

The shield insulation external member among the above-mentioned technical scheme is applied to the shield unit of electrode shield among the prior art, and the concrete usage is:

the vertical surface structure is matched with the inner wall surface of the screen protection unit, and the horizontal surface structure is matched with the lower end surface of the screen protection unit;

fixing the shield insulation sleeve on the shield unit by adopting a screw with insulation protection through a screw hole;

the shield unit combined with the shield insulation external member is finally assembled into the electrode shield, when the shield unit is used for the high-frequency calcium carbide furnace, the shield insulation external member provides reliable insulation protection for the lower end of the shield unit, and the effect of anticipatively preventing cooling water from leaking into the furnace body and causing safety accidents due to the fact that electric arcs puncture the shield unit is achieved.

In view of the fact that the lower end face of the screen protection unit is the part which is most prone to arc breakdown in the prior art, the second mica plate and the third mica plate which are stacked between the first glass fiber cloth and the second glass fiber cloth are arranged in the horizontal plane structure corresponding to the lower end face of the screen protection unit, and therefore the performance of the lower end face of the screen protection unit for preventing arc breakdown is further enhanced.

Compared with the prior art, the utility model has the beneficial effects that:

the protective screen unit provides reliable insulation protection for the part which is easy to be punctured by electric arcs, and can effectively prevent the safety accidents caused by the cooling water leaking into the furnace body due to the fact that the electric arcs puncture the protective screen unit.

The present invention will be further described with reference to the drawings and the detailed description.

Drawings

Fig. 1 is a schematic view of the structure of an electrode shield according to the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic cross-sectional structure of the present invention.

Fig. 4 is a use state reference diagram of the present invention.

Detailed Description

As shown in fig. 2 and 3, the shield insulating sleeve comprises a vertical surface structure 21 and a horizontal surface structure 22 which are molded and cured into a whole by adopting a multi-layer material, wherein the vertical surface structure 21 is an arc-shaped thin wall formed by equally dividing a cylinder along the circumference, and the horizontal surface structure 22 is a fan-ring-shaped thin wall which extends outwards along the radial direction at the lower end of the vertical surface structure 21;

wherein, the elevation structure 21 is radially provided with a plurality of screw through holes 23;

the facade structure 21 comprises a first mica paper 201, a second mica paper 202, a first fiberglass cloth 203, a first mica plate 204, a second fiberglass cloth 205, a third mica paper 206 and a fourth mica paper 207 which are sequentially stacked, and the layers are bonded through high-temperature glue;

the horizontal structure 22 includes a first mica paper 201, a second mica paper 202, a first fiberglass cloth 203, a second fiberglass cloth 205, a third mica paper 206, a fourth mica paper 207, a second mica plate 208, a third mica plate 209, and a high-temperature glue, wherein the first mica paper 201, the second mica paper 202, the first fiberglass cloth 203, the second fiberglass cloth 205, the third mica paper 206, and the fourth mica paper 207 are carried on the vertical structure 21, and the second mica plate 208 and the third mica plate 209 are stacked between the first fiberglass cloth 203 and the second fiberglass cloth 205, and are bonded together by the high-temperature glue.

As shown in fig. 4, the shield insulating sleeve in the above technical solution is applied to the shield unit 11 in the electrode shield 1 shown in fig. 1, and is engaged with the inner wall surface of the shield unit 11 through the vertical structure 21, and engaged with the lower end surface of the shield unit 11 through the horizontal structure 22, and is fixed on the shield unit 11 through the screw hole 23 by using a screw (not shown) having an insulating shield. Finally, the shield unit 11 incorporating the shield insulation kit is finally assembled into the electrode shield 1. When the protective screen insulation sleeve is used for a high-frequency calcium carbide furnace, the protective screen insulation sleeve provides reliable insulation protection for the lower end of the protective screen unit 11, and the effect of anticipatively preventing the cooling water from leaking into the furnace body to cause safety accidents due to the fact that the arc breaks through the protective screen unit 11 is achieved.

In particular, in view of the fact that the lower end surface of the shield unit 11 is the portion most prone to arc breakdown in the prior art, the shield insulating kit according to the above-described technical solution further enhances the performance of the lower end surface of the shield unit 11 against arc breakdown by providing the second mica plate 208 and the third mica plate 209 stacked between the first glass fiber cloth 203 and the second glass fiber cloth 205 in the horizontal structure 22 corresponding to the lower end surface of the shield unit 11.

In a preferred embodiment, the first glass fiber cloth 203 and the second glass fiber cloth 205 are alkali-free glass fiber cloth with a thickness of 0.4 mm.

In a preferred embodiment, the first mica plate 204 is a silicone mica plate with a thickness of 1mm, and the second mica plate 208 and the third mica plate 209 are both silicone mica plates with a thickness of 2 mm.

In a preferred embodiment, the first mica paper 201, the second mica paper 202, the third mica paper 206 and the fourth mica paper 207 are all silicone mica paper with a thickness of 0.25 mm.

It will be clear to a person skilled in the art that the scope of protection of the present invention is not limited to details of the foregoing illustrative embodiments, and that all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein by the appended claims without departing from the spirit or essential characteristics thereof.

Claims

1. Shield insulation external member, its characterized in that:

the vertical surface structure and the horizontal surface structure are integrated by adopting multi-layer material mould pressing and curing, the vertical surface structure is an arc thin wall formed by equally dividing a cylinder according to the circumference, and the horizontal surface structure is a fan-shaped annular thin wall which extends outwards along the radial direction at the lower end of the vertical surface structure;

2. The shield insulation kit of claim 1 wherein: the first glass fiber cloth and the second glass fiber cloth are alkali-free glass fiber cloth with the thickness of 0.4 mm.

3. The shield insulation kit of claim 1 wherein: the first mica plate is an organic silicon mica plate with the thickness of 1mm, and the second mica plate and the third mica plate are organic silicon mica plates with the thickness of 2 mm.

4. The shield insulation kit of claim 1 wherein: the first mica paper, the second mica paper, the third mica paper and the fourth mica paper are all organosilicon mica paper with the thickness of 0.25 mm.