High-strength porcelain composite post insulator with protection

Abstract

The invention provides a high-strength porcelain composite post insulator with protection. The high-strength porcelain composite post insulator comprises a first post flange and a second post flange, the composite insulation supporting column is made of a glass fiber epoxy resin infiltration material, one end of the composite insulation supporting column is fixedly installed on the first supporting column flange, and the other end of the composite insulation supporting column is fixedly installed on the second supporting column flange; the porcelain pillar insulation sleeve and the porcelain pillar are formed by firing argil, the argil is made of aluminum oxide, the porcelain pillar insulation sleeve is arranged on the outer side of the composite insulation pillar in a sleeving mode, an air gap exists between the porcelain pillar insulation sleeve and the composite insulation pillar, and one end of the porcelain pillar insulation sleeve is fixedly installed on the first pillar flange. And the other end of the porcelain pillar insulating sleeve is fixedly arranged on the second pillar flange. By applying the technical scheme of the invention, the technical problem of poor equipment safety caused by easy failure of an insulator in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, in particular to a high-strength porcelain composite post insulator with protection. Background Art

[0002] In the field of power equipment, for example, motors and other equipment that have dynamic mechanical vibrations during operation and are relatively heavy in weight, need to be insulated and supported from the ground in some cases, and have high requirements for support stiffness. The mainstream solution is to use insulators in combination with other supporting surfaces. There are many types of insulators, among which porcelain post insulators and composite insulators are mainly used. Porcelain post insulators have good support stiffness, but their material has low fracture toughness and is prone to breakage and failure. Once broken, they will completely lose support, causing the load to fall, threatening the safety of personnel and equipment. Composite insulators have low support stiffness, large vibration amplitude of the supporting equipment, and are also prone to damage and failure of the equipment. Summary of the invention

[0003] The invention provides a high-strength porcelain composite post insulator with protection, which can solve the technical problem in the prior art that the insulator is easy to fail and leads to poor equipment safety.

[0004] The present invention provides a high-strength porcelain composite post insulator with protection, the high-strength porcelain composite post insulator with protection comprises: a first post flange and a second post flange; a composite insulating post, the material of the composite insulating post comprises a glass fiber epoxy resin impregnation material, one end of the composite insulating post is fixedly mounted on the first post flange, and the other end of the composite insulating post is fixedly mounted on the second post flange; a porcelain post insulating sleeve, the porcelain post is made of fired clay, the material of the clay comprises alumina, the porcelain post insulating sleeve is arranged on the outside of the composite insulating post, there is an air gap between the porcelain post insulating sleeve and the composite insulating post, one end of the porcelain post insulating sleeve is fixedly mounted on the first post flange, and the other end of the porcelain post insulating sleeve is fixedly mounted on the second post flange.

[0005] Furthermore, the porcelain pillar insulating sleeve comprises a porcelain pillar body and a plurality of rings, the plurality of rings are all arranged on the outer circumferential surface of the porcelain pillar body, and the plurality of rings are arranged in sequence and spaced apart along the axial direction of the porcelain pillar body.

[0006] Furthermore, the plurality of rings are evenly spaced apart along the axial direction of the porcelain pillar body.

[0007] Furthermore, the first pillar flange includes a first mounting seat, a first composite insulating pillar mounting ring and a first porcelain pillar insulating sleeve mounting ring. The first composite insulating pillar mounting ring and the first porcelain pillar insulating sleeve mounting ring are fixedly mounted on the first mounting seat. The first composite insulating pillar mounting ring is arranged in the first porcelain pillar insulating sleeve mounting ring. One end of the composite insulating pillar is fixedly mounted in the first composite insulating pillar mounting ring, and one end of the porcelain pillar insulating sleeve is fixedly mounted in the first porcelain pillar insulating sleeve mounting ring.

[0008] Furthermore, the first pillar flange also includes a first reinforcing rib, and the first reinforcing rib is arranged between the first porcelain pillar insulating sleeve mounting ring and the first mounting seat.

[0009] Furthermore, the first pillar flange includes a plurality of first reinforcing ribs, and the plurality of first reinforcing ribs are arranged at intervals along the circumference of the first porcelain pillar insulating sleeve mounting ring, and any first reinforcing rib is arranged between the first porcelain pillar insulating sleeve mounting ring and the first mounting seat.

[0010] Furthermore, the second pillar flange includes a second mounting seat, a second composite insulating pillar mounting ring and a second porcelain pillar insulating sleeve mounting ring. The second composite insulating pillar mounting ring and the second porcelain pillar insulating sleeve mounting ring are fixedly arranged on the second mounting seat. The second composite insulating pillar mounting ring is arranged in the second porcelain pillar insulating sleeve mounting ring. The other end of the composite insulating pillar is fixedly installed in the second composite insulating pillar mounting ring. The other end of the porcelain pillar insulating sleeve is fixedly installed in the second porcelain pillar insulating sleeve mounting ring.

[0011] Furthermore, the second pillar flange also includes a second reinforcing rib, and the second reinforcing rib is arranged between the second porcelain pillar insulating sleeve mounting ring and the second mounting seat.

[0012] Furthermore, the second pillar flange includes a plurality of second reinforcing ribs, which are arranged at intervals along the circumference of the second porcelain pillar insulating sleeve mounting ring, and any second reinforcing rib is arranged between the second porcelain pillar insulating sleeve mounting ring and the second mounting seat.

[0013] Furthermore, the first composite insulating pillar mounting ring and the first porcelain pillar insulating sleeve mounting ring are fixedly arranged on the first mounting seat by gluing, and the second composite insulating pillar mounting ring and the second porcelain pillar insulating sleeve mounting ring are fixedly arranged on the second mounting seat by gluing.

[0014] By applying the technical solution of the present invention, a high-strength porcelain composite post insulator with protection is provided. The high-strength porcelain composite post insulator is provided by simultaneously setting a composite insulating post 30 and a porcelain post insulating sleeve 40. The porcelain post insulating sleeve 40 is sleeved on the outside of the composite insulating post 30. There is an air gap between the porcelain post insulating sleeve 40 and the composite insulating post 30. In normal use, the porcelain post insulating sleeve and the composite insulating post jointly support the load. When the porcelain post insulating sleeve fails due to fracture, the composite insulating post can still support the load, thereby improving the safety of the equipment after the porcelain post insulating sleeve fails. In addition, in the present invention, the porcelain post is made of fired clay whose main component is alumina. The porcelain post insulating sleeve provides rigid load bearing and has high structural rigidity. The material of the composite insulating post 30 includes glass fiber epoxy resin impregnation material. The composite insulating post 30 provides flexible support, has high load bearing capacity, and has a high fracture toughness value. It provides protective support when the porcelain post insulating sleeve fails due to fracture, thereby ensuring that the support will not fall when the porcelain post insulating sleeve fails. Therefore, compared with the prior art, the high-strength porcelain composite post insulator provided by the present invention provides rigid support. When the porcelain post insulation sleeve breaks and fails, the composite insulation post can still support the load, thereby improving the safety of the equipment after the porcelain post insulator fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic structural diagram of a high-strength porcelain composite post insulator with protection provided according to a specific embodiment of the present invention is shown;

[0017] Figure 2 A cross-sectional view of a high-strength porcelain composite post insulator with protection provided according to a specific embodiment of the present invention is shown;

[0018] Figure 3 A front view of a second support flange provided according to a specific embodiment of the present invention is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. First pillar flange; 11. First mounting seat; 12. First composite insulating pillar mounting ring; 13. First porcelain pillar insulating sleeve mounting ring; 14. First reinforcing rib; 20. Second pillar flange; 21. Second mounting seat; 22. Second composite insulating pillar mounting ring; 23. Second porcelain pillar insulating sleeve mounting ring; 24. Second reinforcing rib; 30. Composite insulating pillar; 40. Porcelain pillar insulating sleeve; 41. Porcelain pillar body; 42. Ring; 50. Air gap; 60. Interface. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0024] like Figures 1 to 3As shown, according to a specific embodiment of the present invention, a high-strength porcelain composite post insulator with protection is provided, and the high-strength porcelain composite post insulator with protection includes a first post flange 10, a second post flange 20, a composite insulating post 30 and a porcelain post insulating sleeve 40. The material of the composite insulating post 30 includes a glass fiber epoxy resin impregnation material. One end of the composite insulating post 30 is fixedly mounted on the first post flange 10, and the other end of the composite insulating post 30 is fixedly mounted on the second post flange 20. The porcelain post is made of fired clay, and the material of the clay includes alumina. The porcelain post insulating sleeve 40 is sleeved on the outside of the composite insulating post 30. There is an air gap 50 between the porcelain post insulating sleeve 40 and the composite insulating post 30. One end of the porcelain post insulating sleeve 40 is fixedly mounted on the first post flange 10, and the other end of the porcelain post insulating sleeve 40 is fixedly mounted on the second post flange 20.

[0025] By applying this configuration, a high-strength porcelain composite post insulator with protection is provided. The high-strength porcelain composite post insulator is provided by simultaneously setting a composite insulating post 30 and a porcelain post insulating sleeve 40. The porcelain post insulating sleeve 40 is sleeved on the outside of the composite insulating post 30. There is an air gap between the porcelain post insulating sleeve 40 and the composite insulating post 30. In normal use, the porcelain post insulating sleeve and the composite insulating post jointly support the load. When the porcelain post insulating sleeve breaks and fails, the composite insulating post can still support the load, thereby improving the safety of the equipment after the porcelain post insulating sleeve fails. In addition, in the present invention, the porcelain post is made of fired clay whose main component is alumina, the porcelain post insulating sleeve provides rigid load bearing and has a large structural rigidity, the material of the composite insulating post 30 includes glass fiber epoxy resin impregnation material, the composite insulating post 30 provides flexible support, has a large load bearing capacity, and has a large fracture toughness value, and provides protective support when the porcelain post insulating sleeve breaks and fails, thereby ensuring that the support will not fall when the porcelain post insulating sleeve fails. Therefore, compared with the prior art, the high-strength porcelain composite post insulator provided by the present invention provides rigid support. When the porcelain post insulation sleeve breaks and fails, the composite insulation post can still support the load, thereby improving the safety of the equipment after the porcelain post insulator fails.

[0026] Furthermore, in the present invention, in order to increase the creepage distance of the porcelain composite post insulator, the porcelain post insulating sleeve 40 can be configured to include a porcelain post body 41 and a plurality of rings 42, and the plurality of rings 42 are all arranged on the outer circumferential surface of the porcelain post body 41, and the plurality of rings 42 are arranged in sequence along the axial direction of the porcelain post body 41.

[0027] As a specific embodiment of the present invention, a plurality of rings 42 are evenly spaced apart along the axial direction of the porcelain pillar body 41 .

[0028] Further, in the present invention, in order to realize the fixed installation of the composite insulating pillar and the porcelain pillar insulating sleeve, the first pillar flange 10 can be configured to include a first mounting seat 11, a first composite insulating pillar mounting ring 12 and a first porcelain pillar insulating sleeve mounting ring 13, the first composite insulating pillar mounting ring 12 and the first porcelain pillar insulating sleeve mounting ring 13 are fixedly arranged on the first mounting seat 11, the first composite insulating pillar mounting ring 12 is arranged in the first porcelain pillar insulating sleeve mounting ring 13, one end of the composite insulating pillar 30 is fixedly installed in the first composite insulating pillar mounting ring 12, and one end of the porcelain pillar insulating sleeve 40 is fixedly installed in the first porcelain pillar insulating sleeve mounting ring 13. As a specific embodiment of the present invention, the first composite insulating pillar mounting ring 12 and the first porcelain pillar insulating sleeve mounting ring 13 are concentrically arranged.

[0029] In addition, in the present invention, in order to eliminate local stress of the flange and increase structural strength, the first pillar flange 10 also includes a first reinforcing rib 14, and the first reinforcing rib 14 is arranged between the first porcelain pillar insulating sleeve mounting ring 13 and the first mounting seat 11.

[0030] As a specific embodiment of the present invention, in order to further improve the structural strength, the first pillar flange 10 includes a plurality of first reinforcing ribs 14, and the plurality of first reinforcing ribs 14 are arranged at circumferential intervals along the first porcelain pillar insulating sleeve mounting ring 13, and any first reinforcing rib 14 is arranged between the first porcelain pillar insulating sleeve mounting ring 13 and the first mounting seat 11.

[0031] Further, in the present invention, in order to realize the fixed installation of the composite insulating pillar and the porcelain pillar insulating sleeve, the second pillar flange 20 can be configured to include a second mounting seat 21, a second composite insulating pillar mounting ring 22 and a second porcelain pillar insulating sleeve mounting ring 23, the second composite insulating pillar mounting ring 22 and the second porcelain pillar insulating sleeve mounting ring 23 are fixedly arranged on the second mounting seat 21, the second composite insulating pillar mounting ring 22 is arranged in the second porcelain pillar insulating sleeve mounting ring 23, the other end of the composite insulating pillar 30 is fixedly installed in the second composite insulating pillar mounting ring 22, and the other end of the porcelain pillar insulating sleeve 40 is fixedly installed in the second porcelain pillar insulating sleeve mounting ring 23. As a specific embodiment of the present invention, the second composite insulating pillar mounting ring 22 and the second porcelain pillar insulating sleeve mounting ring 23 are concentrically arranged.

[0032] In addition, in the present invention, in order to eliminate local stress of the flange and increase structural strength, the second pillar flange 20 also includes a second reinforcing rib 24, and the second reinforcing rib 24 is arranged between the second porcelain pillar insulating sleeve mounting ring 23 and the second mounting seat 21.

[0033] As a specific embodiment of the present invention, in order to further improve the structural strength, the second pillar flange 20 includes a plurality of second reinforcing ribs 24, and the plurality of second reinforcing ribs 24 are arranged at circumferential intervals along the second porcelain pillar insulating sleeve mounting ring 23, and any second reinforcing rib 24 is arranged between the second porcelain pillar insulating sleeve mounting ring 23 and the second mounting seat 21.

[0034] Furthermore, in the present invention, in order to facilitate fixation, the first composite insulating pillar mounting ring 12 and the first porcelain pillar insulating sleeve mounting ring 13 are fixed on the first mounting seat 11 by gluing, and the second composite insulating pillar mounting ring 22 and the second porcelain pillar insulating sleeve mounting ring 23 are fixed on the second mounting seat 21 by gluing.

[0035] In order to further understand the present invention, the following Figures 1 to 3 The high-strength porcelain composite post insulator with protection provided by the present invention is described in detail.

[0036] like Figures 1 to 3 As shown, according to a specific embodiment of the present invention, a high-strength porcelain composite post insulator with protection is provided, and the high-strength porcelain composite post insulator with protection includes a first post flange 10, a second post flange 20, a composite insulating post 30 and a porcelain post insulating sleeve 40. The material of the composite insulating post 30 includes a glass fiber epoxy resin impregnation material. One end of the composite insulating post 30 is fixedly mounted on the first post flange 10, and the other end of the composite insulating post 30 is fixedly mounted on the second post flange 20. The porcelain post is made of fired clay whose main component is alumina. The porcelain post insulating sleeve 40 is sleeved on the outside of the composite insulating post 30. There is an air gap between the porcelain post insulating sleeve 40 and the composite insulating post 30. One end of the porcelain post insulating sleeve 40 is fixedly mounted on the first post flange 10, and the other end of the porcelain post insulating sleeve 40 is fixedly mounted on the second post flange 20.

[0037] The porcelain support insulating sleeve 40 provides rigid bearing, and is made of fired clay with alumina as the main component. The mechanical properties of the porcelain support insulating sleeve fired with different proportions of components are different. In this embodiment, the porcelain support insulating sleeve is fired with alumina content of 95%. Figure 2 As shown in the figure, the porcelain pillar insulating sleeve 40 includes a porcelain pillar body 41 and a plurality of rings 42. The plurality of rings 42 are a plurality of coaxially stacked umbrella skirts for increasing the creepage distance. The porcelain pillar body 41 mainly provides support.

[0038] The composite insulating support 30 is inserted into the porcelain support insulating sleeve 40, and is used to provide protective support when the porcelain support insulating sleeve breaks and fails, so as to ensure that the support will not fall when the porcelain support insulating sleeve fails. The composite insulating support 30 is mainly characterized by flexible support and large fracture toughness value. In this embodiment, the material is glass fiber epoxy resin impregnation material.

[0039] The first support flange 10 and the second support flange 20 are used to fix the porcelain support insulation sleeve and the composite insulation support. Figure 3 As shown, the first pillar flange 10 includes a first mounting seat 11, a first composite insulating pillar mounting ring 12, a first porcelain pillar insulating sleeve mounting ring 13 and a plurality of first reinforcing ribs 14. The first composite insulating pillar mounting ring 12 and the first porcelain pillar insulating sleeve mounting ring 13 are fixedly arranged on the first mounting seat 11. The first composite insulating pillar mounting ring 12 is arranged in the first porcelain pillar insulating sleeve mounting ring 13. One end of the composite insulating pillar 30 is fixedly installed in the first composite insulating pillar mounting ring 12. One end of the porcelain pillar insulating sleeve 40 is fixedly installed in the first porcelain pillar insulating sleeve mounting ring 13. The first composite insulating pillar mounting ring 12 and the first porcelain pillar insulating sleeve mounting ring 13 are fixedly arranged on the first mounting seat 11 by gluing. The external mechanical interface 60 of the base is used for mechanical connection with the bearing, the ground and other positions.

[0040] The second pillar flange 20 includes a second mounting seat 21, a second composite insulating pillar mounting ring 22, a second porcelain pillar insulating sleeve mounting ring 23 and a plurality of second reinforcing ribs 24. The second composite insulating pillar mounting ring 22 and the second porcelain pillar insulating sleeve mounting ring 23 are fixedly arranged on the second mounting seat 21. The second composite insulating pillar mounting ring 22 is arranged in the second porcelain pillar insulating sleeve mounting ring 23. The other end of the composite insulating pillar 30 is fixedly mounted in the second composite insulating pillar mounting ring 22. The other end of the porcelain pillar insulating sleeve 40 is fixedly mounted in the second porcelain pillar insulating sleeve mounting ring 23. The second reinforcing ribs 24 are arranged between the second porcelain pillar insulating sleeve mounting ring 23 and the second mounting seat 21.

[0041] The first reinforcing rib 14 and the second reinforcing rib 24 are used to eliminate the local stress of the flange and increase the structural strength. In this embodiment, the first pillar flange 10 and the second pillar flange 20 are both made of cast iron material HT250.

[0042] In this embodiment, the outer diameter of the porcelain support insulation sleeve support is 200mm, the inner diameter is 120mm, and the height is 400mm; the outer diameter of the composite insulation support is 100mm, and the height is 400mm. The insulation withstand voltage level is 35kV, and the mechanical damage load is 500kN.

[0043] From the above description, it can be known that the present invention has a composite insulating support inserted into the porcelain support insulating sleeve, which is fixedly connected by two sets of concentric mounting rings. In normal use, the porcelain support insulating sleeve and the composite insulating support jointly support the load. When the porcelain support insulating sleeve breaks and fails, the composite insulating support can still support the load, thereby improving the safety of the equipment after the porcelain support insulating sleeve fails.

[0044] In summary, the present invention provides a high-strength porcelain composite post insulator with protection. The high-strength porcelain composite post insulator is provided with a composite insulating post 30 and a porcelain post insulating sleeve 40 at the same time. The porcelain post insulating sleeve 40 is sleeved on the outside of the composite insulating post 30. There is an air gap between the porcelain post insulating sleeve 40 and the composite insulating post 30. In normal use, the porcelain post insulating sleeve and the composite insulating post jointly support the load. When the porcelain post insulating sleeve breaks and fails, the composite insulating post can still support the load, thereby improving the safety of the equipment after the porcelain post insulating sleeve fails. In addition, in the present invention, the porcelain post is made of fired clay whose main component is alumina, the porcelain post insulating sleeve provides rigid load bearing and has a large structural rigidity, the material of the composite insulating post 30 includes glass fiber epoxy resin impregnation material, the composite insulating post 30 provides flexible support, has a large load bearing capacity, and has a large fracture toughness value, and provides protective support when the porcelain post insulating sleeve breaks and fails, thereby ensuring that the support will not fall when the porcelain post insulating sleeve fails. Therefore, compared with the prior art, the high-strength porcelain composite post insulator provided by the present invention provides rigid support. When the porcelain post insulation sleeve breaks and fails, the composite insulation post can still support the load, thereby improving the safety of the equipment after the porcelain post insulator fails.

[0045] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0046] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-strength porcelain composite post insulator with protection, characterized in that: The high-strength porcelain composite post insulator with protection comprises: A first support flange (10) and a second support flange (20); A composite insulating support post (30), wherein the material of the composite insulating support post (30) includes a glass fiber epoxy resin impregnation material, one end of the composite insulating support post (30) is fixedly mounted on the first support post flange (10), and the other end of the composite insulating support post (30) is fixedly mounted on the second support post flange (20); A porcelain pillar insulating sleeve (40), wherein the porcelain pillar is made of fired clay, the material of the clay includes alumina, the porcelain pillar insulating sleeve (40) is sleeved on the outside of the composite insulating pillar (30), an air gap exists between the porcelain pillar insulating sleeve (40) and the composite insulating pillar (30), one end of the porcelain pillar insulating sleeve (40) is fixedly mounted on the first pillar flange (10), and the other end of the porcelain pillar insulating sleeve (40) is fixedly mounted on the second pillar flange (20).

2. The high-strength porcelain composite post insulator with protection according to claim 1 is characterized in that: The porcelain pillar insulating sleeve (40) comprises a porcelain pillar body (41) and a plurality of rings (42), wherein the plurality of rings (42) are arranged on the outer circumferential surface of the porcelain pillar body (41), and the plurality of rings (42) are arranged in sequence and spaced apart along the axial direction of the porcelain pillar body (41).

3. The high-strength porcelain composite post insulator with protection according to claim 2 is characterized in that: The plurality of rings (42) are evenly spaced apart along the axial direction of the porcelain pillar body (41).

4. The protected high-strength porcelain composite post insulator according to any one of claims 1 to 3, characterized in that: The first pillar flange (10) comprises a first mounting seat (11), a first composite insulating pillar mounting ring (12) and a first porcelain pillar insulating sleeve mounting ring (13); the first composite insulating pillar mounting ring (12) and the first porcelain pillar insulating sleeve mounting ring (13) are fixedly mounted on the first mounting seat (11); the first composite insulating pillar mounting ring (12) is arranged in the first porcelain pillar insulating sleeve mounting ring (13); one end of the composite insulating pillar (30) is fixedly mounted in the first composite insulating pillar mounting ring (12); and one end of the porcelain pillar insulating sleeve (40) is fixedly mounted in the first porcelain pillar insulating sleeve mounting ring (13).

5. The protected high-strength porcelain composite post insulator according to claim 4, characterized in that: The first pillar flange (10) further comprises a first reinforcing rib (14), wherein the first reinforcing rib (14) is arranged between the first porcelain pillar insulating sleeve mounting ring (13) and the first mounting seat (11).

6. The protected high-strength porcelain composite post insulator according to claim 5, characterized in that: The first pillar flange (10) comprises a plurality of the first reinforcing ribs (14), and the plurality of the first reinforcing ribs (14) are arranged at intervals along the circumference of the first porcelain pillar insulating sleeve mounting ring (13), and any of the first reinforcing ribs (14) are arranged between the first porcelain pillar insulating sleeve mounting ring (13) and the first mounting seat (11).

7. The protected high-strength porcelain composite post insulator according to claim 6, characterized in that: The second pillar flange (20) comprises a second mounting seat (21), a second composite insulating pillar mounting ring (22) and a second porcelain pillar insulating sleeve mounting ring (23); the second composite insulating pillar mounting ring (22) and the second porcelain pillar insulating sleeve mounting ring (23) are fixedly mounted on the second mounting seat (21); the second composite insulating pillar mounting ring (22) is arranged in the second porcelain pillar insulating sleeve mounting ring (23); the other end of the composite insulating pillar (30) is fixedly mounted in the second composite insulating pillar mounting ring (22); and the other end of the porcelain pillar insulating sleeve (40) is fixedly mounted in the second porcelain pillar insulating sleeve mounting ring (23).

8. The protected high-strength porcelain composite post insulator according to claim 7, characterized in that: The second pillar flange (20) further comprises a second reinforcing rib (24), wherein the second reinforcing rib (24) is arranged between the second porcelain pillar insulating sleeve mounting ring (23) and the second mounting seat (21).

9. The protected high-strength porcelain composite post insulator according to claim 8, characterized in that: The second pillar flange (20) comprises a plurality of second reinforcing ribs (24), and the plurality of second reinforcing ribs (24) are arranged at intervals along the circumference of the second porcelain pillar insulating sleeve mounting ring (23), and any second reinforcing rib (24) is arranged between the second porcelain pillar insulating sleeve mounting ring (23) and the second mounting seat (21).

10. The protected high-strength porcelain composite post insulator according to claim 9, characterized in that: The first composite insulating pillar mounting ring (12) and the first porcelain pillar insulating sleeve mounting ring (13) are fixedly arranged on the first mounting seat (11) by gluing, and the second composite insulating pillar mounting ring (22) and the second porcelain pillar insulating sleeve mounting ring (23) are fixedly arranged on the second mounting seat (21) by gluing.

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