CN216267152U - Three-post insulator casting mold - Google Patents
Three-post insulator casting mold Download PDFInfo
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- CN216267152U CN216267152U CN202122321096.XU CN202122321096U CN216267152U CN 216267152 U CN216267152 U CN 216267152U CN 202122321096 U CN202122321096 U CN 202122321096U CN 216267152 U CN216267152 U CN 216267152U
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- fixing bolt
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- post insulator
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Abstract
The utility model provides a three-post insulator casting mold, which comprises: the upper template comprises a cast iron base body, a three-pillar insulator cavity, a pouring gate, a cylindrical pouring channel, a die assembly fixing bolt hole, a grounding insert fixing bolt hole and a central conductor through hole; the lower template comprises a cast iron substrate, a three-pillar insulator cavity, a die assembly fixing bolt hole, a grounding insert fixing bolt hole and a central conductor through hole; the die assembly fixing bolt holes are distributed around the three-pillar insulator cavities. According to the technical scheme, the casting mold is horizontally placed, so that the mold column leg is divided into the upper part and the lower part, the mechanical property of the column leg is improved by utilizing the phenomenon of settlement and improving the content of alumina at the lower part of the mold column leg, and the mechanical property of the column leg is improved, so that the three-column insulator is suitable for producing the three-column insulator under the vertical installation working condition of the GIL bus.
Description
Technical Field
The utility model relates to the field of manufacturing of power transmission and transformation insulating equipment, in particular to a three-post insulator casting mold.
Background
The three-post insulator plays an important role in electrical insulation and mechanical support in a gas insulated metal enclosed transmission line (GIL), is a key electrical component in the GIL, and ensures that the mechanical strength of the three-post insulator is one of important guarantees for safe and stable operation of the GIL.
According to the difference of the horizontal and vertical installation modes of the GIL bus, the three-post insulator can be divided into a horizontally-installed three-post insulator and a vertically-installed three-post insulator, the stress characteristics of three post legs of the vertically-installed three-post insulator are basically consistent, but the stress requirement of the lower half part of the post leg is higher than that of the upper half part of the post leg. Meanwhile, the three-post insulator is formed by integrally curing an epoxy composite material formed by mixing liquid epoxy resin, an anhydride curing agent and a micron-sized alumina powder filler with the grounding insert, and the alumina powder can generate a 'settlement' phenomenon due to self gravity in the casting process, so that the alumina content of the lowermost leg of the three-post insulator under the gravity is relatively high, and the mechanical strength of the leg is higher.
However, at present, the casting mold for manufacturing the three-post insulator does not consider the different requirements of the installation mode of the three-post insulator on the stress of the post leg in engineering application, and does not consider the influence of the 'sedimentation' phenomenon of the alumina powder on the mechanical property of the post leg.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides a three-post insulator casting mold which improves the content of alumina at the lower part of a mold post leg by utilizing the phenomenon of settlement so as to improve the mechanical property of the post leg and is suitable for a three-post insulator with a GIL bus vertical installation working condition in production engineering application.
The utility model provides a three-post insulator casting mold, which specifically comprises: the upper die plate, the lower die plate, the grounding insert fixing bolt and the die assembly fixing bolt;
the upper template comprises a cast iron base body, a three-pillar insulator cavity, a pouring gate, a pouring channel, a die assembly fixing bolt hole, a grounding insert fixing bolt hole and a central conductor through hole;
the lower template comprises a cast iron substrate, a three-pillar insulator cavity, a die assembly fixing bolt hole, a grounding insert fixing bolt hole and a central conductor through hole;
the pouring gate and the pouring channel are both positioned in the cast iron matrix of the upper template, and the pouring channel is connected with the pouring gate and the three-pillar insulator cavity;
the grounding insert fixing bolt is used for fixing a grounding insert of the three-post insulator;
the die assembly fixing bolt holes are uniformly distributed outside the three-pillar insulator cavity;
the central conductor through hole is positioned in the centers of the upper template and the lower template;
the cast iron base member of cope match-plate pattern and the cast iron base member of lower bolster pass through compound die fixing bolt is fixed, and the two is fixed the back, the three-prop insulator cavity of cope match-plate pattern is located the top of the three-prop insulator cavity of lower bolster, the three-prop insulator cavity of cope match-plate pattern with the three-prop insulator cavity of lower bolster merges and forms the pouring cavity of three-prop insulator jointly.
Preferably, the cast iron base body is a polygonal body in appearance, is made of cast iron and has the thickness of not less than 200 mm.
Preferably, the three-pillar insulator cavities, the pouring gate and the pouring channel of the upper template are all located in the cast iron matrix of the upper template and are formed by inwards sinking the cast iron matrix of the upper template;
preferably, the three-pillar insulator cavities of the lower template are positioned in the cast iron matrix of the lower template and are formed by inwards sinking the cast iron matrix of the lower template;
preferably, the appearance and the size of the cast iron matrix of the upper template are the same as those of the cast iron matrix of the lower template;
preferably, the shape and size of the three-post insulator casting cavity are the same as those of the three-post insulator, and the three-post insulator casting cavity is used for accommodating the cast three-post insulator epoxy composite material.
Preferably, the aperture of the pouring gate is not less than 50 mm.
Preferably, the pouring gate is positioned in the middle of the cast iron base body of the upper template and is positioned at the position where the curvature of one of the column legs is larger.
Preferably, the aperture of the pouring channel is not less than 50mm, and the pouring channel is used for connecting the pouring gate and the three-pillar insulator cavity.
Preferably, the grounding insert fixing bolt is matched with the grounding insert fixing bolt hole on the upper template and the grounding insert fixing bolt hole on the lower template;
further preferably, the die assembly fixing bolt holes on the upper die plate and the die assembly fixing bolt holes on the lower die plate are coaxially, symmetrically and uniformly distributed.
Preferably, the die assembly fixing bolt is matched with the die assembly fixing bolt hole on the upper template and the die assembly fixing bolt hole on the lower template;
further preferably, the diameter of the die clamping fixing bolt hole is not less than 20mm, and the pretightening force of the die clamping fixing bolt is not less than 5 kN.
Preferably, the diameter of the grounding insert fixing bolt hole is not less than 80mm, and the grounding insert fixing bolt hole is used for fixing the grounding insert of the three-post insulator.
Preferably, the central conductor through hole is circular, matched with the circular wall of the central conductor of the three-post insulator and used for penetrating and installing the central conductor of the three-post insulator.
From the above technical solution, the present invention has the following advantages:
the utility model provides a three-post insulator casting mold, which is characterized in that the vertical installation mode of a three-post insulator in engineering application is considered, the casting mold is horizontally placed, the column leg part of an upper template three-post insulator cavity is positioned at the upper part of the column leg part of a lower template three-post insulator cavity, so that the mold column leg is divided into an upper part and a lower part, the mechanical property of the column leg is improved by improving the content of aluminum oxide at the lower part of the mold column leg by utilizing the phenomenon of settlement, the mechanical property of the column leg is further improved, and the three-post insulator casting mold is suitable for producing the three-post insulator with the vertical installation working condition of a GIL bus.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a front view of an upper template of a three-post insulator casting mold according to an embodiment of the present invention;
fig. 2 is a front view of a lower template of a three-post insulator casting mold according to an embodiment of the present invention;
fig. 3 is a side view of a three-post insulator casting mold according to an embodiment of the present invention;
reference numerals: an upper template 1, a lower template 2, a grounding insert fixing bolt 3, a grounding insert fixing bolt hole 31, a die assembly fixing bolt 4, a pouring gate 5 and a pouring channel 6,
an upper template cast iron substrate 11, an upper template three-post insulator cavity 12, an upper template central conductor through hole 13, an upper template die assembly fixing bolt hole 14,
the lower template comprises a lower template cast iron matrix 21, a lower template three-pillar insulator cavity 22, a lower template central conductor through hole 23 and a lower template die assembly fixing bolt hole 24.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, it is to be noted that the terms "center", "upper", "lower", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, as they may be, for example, fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The embodiment of the utility model provides a three-post insulator casting mold, and particularly refers to fig. 1 to 3.
In this embodiment, a three post insulator casting mold specifically includes: the device comprises an upper template 1, a lower template 2, a grounding insert fixing bolt 3 and a die assembly fixing bolt 4;
the upper template 1 comprises a cast iron base body 11, a three-pillar insulator cavity 12, a pouring gate 5, a pouring channel 6, a die assembly fixing bolt hole 14, a grounding insert fixing bolt hole 31 and a central conductor through hole 13;
the lower template comprises a cast iron base body 21, a three-pillar insulator cavity 22, a die assembly fixing bolt hole 24, a grounding insert fixing bolt hole 31 and a central conductor through hole 23;
the grounding insert fixing bolt hole 31 is formed by combining a grounding insert fixing bolt hole on the upper template and a grounding insert fixing bolt hole on the lower template, and the grounding insert fixing bolt 3 is matched with the grounding insert fixing bolt hole 31;
the die assembly fixing bolt 4 is matched with the upper template die assembly fixing bolt hole 14 and the lower template die assembly fixing bolt hole 24, and the die assembly fixing bolt holes 4 are distributed outside the three-pillar insulator cavities;
the upper template three-pillar insulator cavity 12, the pouring gate 5 and the pouring channel 6 are all positioned in the upper template cast iron matrix 11 and are formed by inwards sinking the upper template cast iron matrix 11;
the lower template three-pillar insulator cavity 22 is positioned in the lower template cast iron matrix 21 and is formed by inwards sinking the lower template cast iron matrix 21;
the upper template central conductor through hole 13 is positioned in the center of the upper template 1, and the lower template central conductor through hole 23 is positioned in the center of the lower template 2;
the upper template cast iron matrix 11 with the lower template cast iron matrix 21 appearance and size are the same, and the two passes through compound die fixing bolt 4 is fixed, and the two is fixed back, and upper template three-prop insulator cavity 12 is located the top of lower template three-prop insulator cavity 22, upper template three-prop insulator cavity 12 with lower template three-prop insulator cavity 22 merges the pouring cavity body that forms three-prop insulator jointly.
The shapes of the upper template three-pillar insulator cavity 12 and the lower template three-pillar insulator cavity 22 are respectively the same as the shapes of three-pillar insulators formed by dividing the three-pillar insulators by axial planes of pillar legs.
Take 550kV GIL three-post insulator as an example:
furthermore, the cast iron substrates 11 and 12 are irregular hexagonal bodies, are made of gray cast iron, are HT100 and have a thickness of 350 mm.
Further, the three post insulator cavities 12 and 22 are the same shape and size as the 550kV GIL three post insulator for receiving the poured three post insulator epoxy composite.
Further, the pouring gate 5 is circular to facilitate pouring, and has a diameter of 50mm and a height of 90 mm.
Furthermore, the pouring gate 5 is located in the middle of the upper template cast iron base body 11 and located at a position where the curvature of one of the column legs is larger, so that epoxy composite materials formed in the pouring channel can be conveniently removed after the pouring and demolding are finished.
Further, the pouring channel 6 is a cylinder with a diameter of 50mm, and is used for connecting the pouring gate 5 with the three- pillar insulator cavities 12 and 22, so that the epoxy composite material can flow into the three- pillar insulator cavities 12 and 22 from the pouring gate 5 in the pouring process.
Further, the upper template die assembly fixing bolt holes 14 and the lower template die assembly fixing bolt holes 24 are coaxially, symmetrically and uniformly distributed on two sides of the three-pillar insulator cavity.
Further, the diameter of the mold closing fixing bolt holes 14 and 24 is 20mm, the mold closing fixing bolt 4 is a No. 40 steel bolt with the diameter of 20mm and the length of 600mm, the pretightening force of the bolt is not less than 5kN, and the bolt is used for sealing and fixing the upper template 1 and the lower template 2.
Further, the diameter of the grounding insert fixing bolt hole 31 is 80 mm; the grounding insert fixing bolt 3 is made of No. 40 steel, one end of the grounding insert fixing bolt is connected with the convex bottom of the grounding insert, the other end of the grounding insert fixing bolt penetrates through the edge of the cast iron base body, and the nut is used for fixing the grounding insert of the three-post insulator.
Furthermore, the central conductor through holes 13 and 23 are both circular, are matched with the circular wall of the central conductor of the three-post insulator, and are used for penetrating and installing the central conductor of the three-post insulator in the centers of the upper template 1 and the lower template 2.
Before pouring, respectively fixing three grounding inserts in a mould through a grounding insert fixing bolt 3, putting a three-pillar insulator central conductor into a central conductor through hole of an upper template and a lower template, fixing the upper template 1 and the lower template 2 through a die assembly fixing bolt 4, then enabling the upper template 1 to be positioned above the lower template 2, further enabling a column leg part of an upper template three-pillar insulator cavity 12 to be positioned at the upper part of a column leg part of a lower template three-pillar insulator cavity 22, further enabling a mould column leg to be divided into an upper part and a lower part, namely enabling the column leg part of the upper template three-pillar insulator cavity 12 to be the upper part of the column leg, enabling the column leg part of the lower template three-pillar insulator cavity 22 to be the lower part of the column leg, pouring an epoxy composite material from a pouring port 5 positioned on the upper template 1, and further enabling alumina powder in the epoxy composite material to generate a 'sedimentation' phenomenon due to self gravity in the pouring process, the aluminum oxide content of the lower part of the mold column leg is higher than that of the upper part of the column leg, so that the mechanical property of the column leg is improved by improving the aluminum oxide content of the lower part of the mold column leg, and the method is suitable for producing the three-post insulator under the vertical installation working condition of the GIL bus in engineering application.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a three post insulator casting mold which characterized in that specifically includes: the upper die plate, the lower die plate, the grounding insert fixing bolt and the die assembly fixing bolt;
the upper template comprises a cast iron base body, a three-pillar insulator cavity, a pouring gate, a pouring channel, a die assembly fixing bolt hole, a grounding insert fixing bolt hole and a central conductor through hole;
the lower template comprises a cast iron substrate, a three-pillar insulator cavity, a die assembly fixing bolt hole, a grounding insert fixing bolt hole and a central conductor through hole;
the pouring gate and the pouring channel are both positioned in the cast iron matrix of the upper template, and the pouring channel is connected with the pouring gate and the three-pillar insulator cavity;
the grounding insert fixing bolt is used for fixing a grounding insert of the three-post insulator;
the die assembly fixing bolt holes are uniformly distributed outside the three-pillar insulator cavity;
the central conductor through hole is positioned in the centers of the upper template and the lower template;
the cast iron base member of cope match-plate pattern and the cast iron base member of lower bolster pass through compound die fixing bolt is fixed, and the two is fixed the back, the three-prop insulator cavity of cope match-plate pattern is located the top of the three-prop insulator cavity of lower bolster, the three-prop insulator cavity of cope match-plate pattern with the three-prop insulator cavity of lower bolster merges and forms the pouring cavity of three-prop insulator jointly.
2. The pouring mold for the three-post insulator according to claim 1, wherein: the cast iron substrate is a polygonal body in shape, is made of cast iron and has the thickness not less than 200 mm.
3. The pouring mold for the three-post insulator according to claim 1, wherein:
the three-pillar insulator cavities of the upper template are positioned in the cast iron matrix of the upper template and are formed by inwards sinking the cast iron matrix of the upper template;
the three-pillar insulator cavity of the lower template is positioned in the cast iron matrix of the lower template and is formed by inwards sinking the cast iron matrix of the lower template;
the appearance and the size of the cast iron matrix of the upper template are the same as those of the cast iron matrix of the lower template;
the shape and the size of the three-post insulator pouring cavity are the same as those of the three-post insulator, and the three-post insulator pouring cavity is used for containing poured three-post insulator epoxy composite materials.
4. The pouring mold for the three-post insulator according to claim 1, wherein: the caliber of the pouring gate is not less than 50 mm.
5. The pouring mold for the three-post insulator according to claim 1, wherein: the pouring gate is positioned in the middle of the cast iron substrate of the upper template and is positioned at the position where the curvature of one of the column legs is larger.
6. The pouring mold for the three-post insulator according to claim 1, wherein: the aperture of the pouring channel is not less than 50mm, and the pouring channel is used for connecting the pouring gate and the three-support insulator cavity.
7. The pouring mold for the three-post insulator according to claim 1, wherein:
the grounding insert fixing bolt is matched with the grounding insert fixing bolt hole on the upper template and the grounding insert fixing bolt hole on the lower template;
the die assembly fixing bolt holes in the upper die plate and the die assembly fixing bolt holes in the lower die plate are coaxially, symmetrically and uniformly distributed.
8. The pouring mold for the three-post insulator according to claim 1, wherein:
the die assembly fixing bolt is matched with the die assembly fixing bolt hole in the upper template and the die assembly fixing bolt hole in the lower template;
the diameter of the die assembly fixing bolt hole is not less than 20mm, and the pretightening force of the die assembly fixing bolt is not less than 5 kN.
9. The pouring mold for the three-post insulator according to claim 1, wherein: the diameter of the grounding insert fixing bolt hole is not less than 80mm, and the grounding insert fixing bolt hole is used for fixing the grounding insert of the three-post insulator.
10. The pouring mold for the three-post insulator according to claim 1, wherein: the central conductor through hole is in a circular ring shape, is matched with the circular wall of the central conductor of the three-post insulator and is used for penetrating and installing the central conductor of the three-post insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122321096.XU CN216267152U (en) | 2021-09-24 | 2021-09-24 | Three-post insulator casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122321096.XU CN216267152U (en) | 2021-09-24 | 2021-09-24 | Three-post insulator casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216267152U true CN216267152U (en) | 2022-04-12 |
Family
ID=81065632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122321096.XU Active CN216267152U (en) | 2021-09-24 | 2021-09-24 | Three-post insulator casting mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216267152U (en) |
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2021
- 2021-09-24 CN CN202122321096.XU patent/CN216267152U/en active Active
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