Built-in column head porcelain piece of insulator

Abstract

The utility model discloses an insulator built-in column head porcelain member and a manufacturing method, which are used as one of disc-shaped suspension type porcelain insulator production and manufacturing technologies, and are characterized in that the structural shape of an external column head porcelain member is changed, the porcelain member column head is changed from an external position to an internal position (figure 1), a steel foot hole is changed from a downward position to an upward position, and the porcelain member column head is fixed on the steel foot hole. The height of an existing external column head porcelain piece structure is greatly reduced, the steel foot is completely exposed in the state that the steel foot is shielded by the middle umbrella disc and the lower umbrella disc, the steel cap is mostly shielded by the middle umbrella disc and the lower umbrella disc from the exposed state, technical margin is formed, and the narrow structure and related technical problems are solved. The technical parameter H value of the structure height of the built-in column head porcelain insulator accords with the existing technical standard regulation, so that the automation and digital transformation of manufacturing are facilitated, the firing capacity of a kiln is improved, and energy conservation and consumption reduction are realized. Technical performance improvement and new-quality iteration upgrading of the porcelain piece are realized, and the zero value of the porcelain piece is eliminated. The method is suitable for designing and manufacturing the built-in column porcelain of an extra-high voltage large-tonnage insulator and an insulator of a voltage class below.

Description

Technical field:

[0001] The utility model relates to an insulator built-in column head porcelain component and a manufacturing method thereof. Background technology:

[0002] The utility model is one of the production and manufacturing technologies of disc-shaped suspended porcelain insulators, and involves two aspects of background technology of porcelain parts. On the one hand, all the disc-shaped suspended porcelain insulators for AC and DC overhead transmission lines currently produced at home and abroad, whether using column head porcelain part technology or cone head porcelain part technology, are external head porcelain insulators (14). Since 2018, in view of the heavy economic responsibility of ultra-high voltage safety, the large-tonnage porcelain insulators used in domestic ultra-high voltage have replaced bauxite with industrial alumina in the raw material formula of porcelain parts; as the insulating body and forming the porcelain parts with rated mechanical strength and electrical performance together with the steel cap (12), steel foot (10), and cement adhesive (8), the cone head technology is no longer used, and all column head technology is used to solve the problem of stress concentration on the head of the porcelain parts. On the other hand, the existing external column head (7) porcelain parts determine that the external head porcelain insulators (14) are difficult to solve the technical problem caused by the narrow structural space. Eliminating the zero value of the porcelain parts is still a major technical focus that ultra-high voltage needs to pay close attention to. Therefore, the invention of the utility model of built-in column head (5) porcelain parts ( Figure 1 ), optimize and improve technical performance, promote high-quality iterative upgrades in porcelain technology, and be practical in innovating and forming new quality productivity in the traditional porcelain insulator industry.

[0003] Contents of this utility model:

[0004] The purpose of the utility model is to eliminate the zero value of the porcelain piece and provide a porcelain piece for an internal column head insulator which has the advantages of simple structure, novelty, uniqueness, reliable technology and easy production.

[0005] The utility model is achieved through the following technical solutions:

[0006] The external column head (7) of the existing porcelain piece is changed to the inside of the porcelain piece plate (1), so as to realize the shape structure of the porcelain piece with the internal column head (5) ( Figure 1 ), the steel foot hole (4) realizes the shape structure structure from downward to upward ( Figure 2 ).

[0007] The shape and structure of the existing porcelain plate (1) and the middle umbrella plate (2) and the lower umbrella plate (3) remain unchanged, and the steel foot (10) is completely exposed from the state of being covered by the middle umbrella plate (2) and the lower umbrella plate (3). Figure 3 ), solves the problem of narrow space and inconvenient operation of the locking pin (13) during power grid infrastructure construction and operation and maintenance, realizes barrier-free disassembly and assembly of porcelain insulators, and prevents hidden dangers of porcelain parts zero value caused by accidents.

[0008] The height of the built-in column head porcelain structure (6) is significantly lower than that of the existing external column head (7) porcelain structure ( Figure 2 After the built-in column head (5) porcelain piece is assembled with the existing steel foot (10) and steel cap (12) using cement adhesive (8), the built-in column head porcelain insulator meets the structural height technical parameter H value specified in the existing technical standards ( Figure 3 ).

[0009] The built-in column head (5) porcelain piece utilizes the technical space provided by the external-to-inside conversion to form a margin for solving technical problems, changes the technical limitation status quo caused by the external column head (7) porcelain piece structure, and realizes the improvement of the technical performance of the porcelain piece.

[0010] The shape structure formed by the built-in column head (5) porcelain piece, the steel foot hole (4) and the plate surface (1) Figure 1 ), so that the steel cap (12) is mostly shielded by the middle umbrella plate (2) and the lower umbrella plate (3) from the original exposed state ( Figure 3 ), solve the technical problem of anti-seepage performance of the gap at the steel cap mouth (15).

[0011] For the steel foot hole (4) of the built-in column head (5) porcelain part, after the moisture of the cement glued steel foot (10) is dried, the silicone sealant (9) is used to seal the steel foot hole (4) to solve the problem of the anti-seepage performance of the steel foot hole (4). Figure 3 ).

[0012] The built-in column head (5) porcelain piece structure does not change the connection mark of the porcelain insulator. It can be put into practical use by simply exchanging the connecting hardware at both ends of the tower end ball head hanging ring and the high-voltage end bowl head hanging ring.

[0013] Fine-tune the position of the anti-electrocorrosion zinc sleeve (11) of the steel foot (10).

[0014] Description of the built-in column capital porcelain parts:

[0015] Figure 1 Schematic diagram of the shape and structure of the built-in capital porcelain.

[0016] Figure 2 Comparison of the appearance of internal and external capital porcelain parts.

[0017] Figure 3 Illustration of the H value of the technical parameter of the technical standard structure height of porcelain insulators.

[0018] In the picture:

[0019] 1. The disk

[0020] 2. Middle umbrella plate

[0021] 3. Lower the umbrella

[0022] 4.Steel foot holes

[0023] 5. Built-in column head

[0024] 6. Height of built-in column head porcelain structure

[0025] 7. External capital

[0026] 8. Cement adhesive

[0027] 9. Silicone sealant

[0028] 10.Steel feet

[0029] 11. Zinc sleeve

[0030] 12.Steel cap

[0031] 13. Locking pin

[0032] 14. External head porcelain insulator

[0033] 15.Steel cap mouth

[0034] The specific manufacturing method of this utility model is as follows:

[0035] According to the content and technical solution of the utility model, a built-in column head (5) porcelain part ( Figure 1 ) to form a design and production drawing.

[0036] Tools and equipment for making a mold for a built-in column head (5) porcelain blank and a silicone sealant plugging tool for a steel foot hole (4).

[0037] The manufacturing process, process flow and automated equipment of the external column head (7) porcelain insulator are adjusted to adapt to the manufacturing of both the internal column head (5) porcelain part and the external column head (7) porcelain part, thereby reducing the manufacturing cost.

[0038] The existing process, process and automated equipment for making the external column head (7) porcelain piece are used to make the internal column head (5) porcelain piece, including the following steps: Figure 2 ), when firing the porcelain pieces, the tunnel kiln (16) does not change the volume ( Figure 4 ), the firing capacity (17) of the built-in column head (5) porcelain piece is increased by more than 10% than the firing capacity (18) of the external column head (7), and the corresponding firing energy consumption of the production link is reduced in disguise.

[0039] Illustration of kiln volume and firing capacity

[0040] Figure 4 Comparison of kiln volume and firing capacity of internal and external column capital porcelain pieces.

[0041] In the picture:

[0042] 16. Tunnel kiln

[0043] 17. Firing capacity of built-in column capital porcelain parts

[0044] 18. Firing capacity diagram of external column capital porcelain

[0045] The built-in stud (5) porcelain parts are conducive to production automation and digital transformation, enabling the iterative upgrade of porcelain parts technology, forming new quality production conditions for built-in stud porcelain insulators, and adapting to the high-quality technological progress needs of ultra-high voltage and large-tonnage porcelain insulators.

Claims

1. An insulator with a built-in column head porcelain component, characterized by: The external column head shape structure of the porcelain piece is changed from external to internal, forming a built-in column head porcelain piece structure, and the steel foot hole (4) is transformed from a downward to an upward structural structure; the height of the built-in column head porcelain piece structure is basically consistent with the overall height (6) of the plate surface (1), the middle umbrella plate (2), and the lower umbrella plate (3).

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