Anti-spalling porcelain insulator

Abstract

The utility model relates to the technical field of electric porcelain insulators, and discloses an anti-spalling porcelain insulator, which comprises an insulator body, and a cooling assembly is arranged in the insulator body. According to the anti-spalling porcelain insulator, when air flows to the vicinity of the blade, the blade rotates, so that the air enters the air inlet pipe through the air inlet according to the Bernoulli principle, takes away heat in the insulator body, and then discharges the heat out of the insulator body through the air outlet, thereby greatly reducing the temperature change in the insulator body, reducing the thermal expansion stress, and improving the anti-spalling performance of the insulator. The airflow passes through the narrowed convex ring, the flow speed of the airflow is increased, the air obtains more kinetic energy in the air inlet pipe, the heat transfer is more efficient due to the increase of the flow speed of the airflow, the heat in the insulator body can be more effectively taken away by the air at a high flow speed, and the cooling efficiency is improved; and expansion and fracture of the porcelain insulator caused by heat accumulation are avoided.

Description

Technical Field

[0001] This utility model relates to the field of porcelain insulator technology, specifically to a porcelain insulator resistant to expansion and cracking. Background Technology

[0002] An insulator is an electrical device specifically designed to support conductors and effectively isolate them from the ground or other conductors. It is widely used in power transmission lines and power equipment. It is usually made of porcelain, glass or composite materials and has excellent electrical insulation properties and mechanical strength. It can work stably for a long time under various climatic conditions. Insulators not only prevent current leakage and ensure the safe operation of the power system, but also bear the weight of the conductors and external forces, such as wind loads and ice and snow pressure. Depending on the application scenario, insulators can be divided into many types such as suspension insulators, pin insulators, post insulators and tension insulators.

[0003] However, with prolonged use, the internal temperature of the aforementioned insulators gradually increases. Although the ceramic structure can increase its melting point, it will still crack due to internal pressure expansion. Therefore, we propose an anti-crack ceramic insulator. Utility Model Content

[0004] The purpose of this invention is to provide a crack-resistant porcelain insulator to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a crack-resistant porcelain insulator, comprising an insulator body, wherein a cooling assembly is disposed inside the insulator body, the cooling assembly comprising:

[0006] An air inlet is provided on the bottom end face of the insulator body, and an air outlet is provided on the bottom end face of the insulator body. The air inlet and the air outlet are connected through an air inlet pipe, and a protruding ring is fixedly connected to the inner wall of the air inlet pipe.

[0007] The inner ring has a movable ball movably connected to its outer wall, and an outer ring is movably connected to the outer wall of the movable ball. A blade is fixedly connected to the outer wall of the outer ring.

[0008] Preferably, the number of air inlet pipes is set to several groups, and the several groups of air inlet pipes are arranged inside the insulator body.

[0009] Preferably, the insulator body includes an insulating component and a connecting metal component. The insulating component is arranged in an umbrella shape, the connecting metal component penetrates the insulating component, and bolts are threaded to both ends of the connecting metal component.

[0010] Preferably, the inner ring is fixedly connected to the outer wall of the connecting metal part, and the blade is located directly below the insulating part.

[0011] Preferably, the number of movable balls is set to several groups, and the several groups of movable balls are equally spaced between the inner ring and the outer ring.

[0012] Preferably, the blade is located directly below the air outlet, and the blade is movably connected to the bottom end face of the insulator body. The blade is arranged in a spiral shape. The rotation of the blade directly below the insulator body reduces the air pressure at the air outlet, thereby allowing air to enter the interior of the air inlet pipe through the air inlet according to Bernoulli's principle, carrying away the heat inside the insulator body, and then discharging the air from the insulator body through the air outlet.

[0013] Preferably, a guide strip is fixedly connected to the inner wall of the air inlet pipe, and the guide strip is spirally arranged on the inner wall of the air inlet pipe.

[0014] Compared with the prior art, this utility model provides a porcelain insulator that is resistant to expansion and cracking, which has the following beneficial effects:

[0015] 1. This anti-expansion porcelain insulator, through its cooling components, allows air to flow near the blades, causing the blades to rotate. Following Bernoulli's principle, the air enters the inlet duct through the inlet, carrying away heat from the insulator body. The air is then discharged through the outlet, significantly reducing internal temperature changes and thermal expansion stress, thus preventing thermal expansion and cracking. This slows down the aging of the insulator material and extends its service life. The spiral blade design generates a rotating airflow that quickly exits near the outlet, improving the efficiency of hot air discharge and preventing heat stagnation. The airflow velocity is increased by passing through a narrowed convex ring, allowing the air to gain more kinetic energy within the inlet duct. This increased airflow velocity makes heat transfer more efficient, as the high velocity allows for more effective heat removal from the insulator body, improving cooling efficiency and preventing expansion and cracking of the porcelain insulator due to heat accumulation.

[0016] 2. This anti-expansion porcelain insulator, through the setting of guide strips, increases the contact area between the airflow and the inside of the insulator body. This allows the airflow to fully contact the hot surface of the insulator body, enhancing the heat exchange efficiency. By guiding the airflow along the spiral path of the air inlet pipe, it can more evenly bring cold air into all areas of the insulator body, ensuring the uniformity of the internal temperature of the insulator body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the main body of this utility model;

[0019] Figure 3 This is a schematic diagram of the air inlet pipe structure of this utility model;

[0020] Figure 4 This utility model Figure 3 Schematic diagram of the structure of region A in the middle;

[0021] Figure 5 This is a schematic diagram of the blade structure of this utility model.

[0022] In the diagram: 1. Insulator body; 2. Cooling assembly; 201. Air inlet; 202. Air outlet; 203. Air inlet pipe; 204. Convex ring; 205. Inner ring; 206. Outer ring; 207. Moving ball; 208. Blade; 3. Guide bar. Detailed Implementation

[0023] like Figures 1-5 As shown, this utility model provides a technical solution: an anti-expansion crack porcelain insulator, including an insulator body 1, and a cooling component 2 is provided inside the insulator body 1. The cooling component 2 includes an air inlet 201, an air outlet 202, an air inlet pipe 203, a convex ring 204, an inner ring 205, an outer ring 206, a movable ball 207, and a blade 208.

[0024] In one embodiment of this utility model, an air inlet 201 is provided on the bottom end face of the insulator body 1, and an air outlet 202 is provided on the bottom end face of the insulator body 1. The air inlet 201 and the air outlet 202 are connected through an air inlet pipe 203. A protruding ring 204 is fixedly connected to the inner wall of the air inlet pipe 203. Several sets of air inlet pipes 203 are provided, and several sets of air inlet pipes 203 are arranged inside the insulator body 1.

[0025] The outer wall of the inner ring 205 is movably connected to a movable ball 207, the outer wall of the movable ball 207 is movably connected to an outer ring 206, the outer wall of the outer ring 206 is fixedly connected to a blade 208, and the number of movable balls 207 is set to several groups, with several groups of movable balls 207 equally spaced between the inner ring 205 and the outer ring 206.

[0026] The insulator body 1 includes an insulating component and a connecting gold component. The insulating component is arranged in an umbrella shape. The connecting gold component passes through the insulating component, and bolts are threaded to both ends of the connecting gold component. The inner ring 205 is fixedly connected to the outer wall of the connecting gold component, and the blade 208 is located directly below the insulating component.

[0027] The blade 208 is located directly below the air outlet 202. The blade 208 is movably connected to the bottom end face of the insulator body 1. The blade 208 is arranged in a spiral shape. The rotation of the blade 208 directly below the insulator body 1 reduces the air pressure at the air outlet 202, thereby allowing air to enter the interior of the air inlet pipe 203 through the air inlet 201 according to Bernoulli's principle, carrying away the heat inside the insulator body 1, and then discharging the air from the insulator body 1 through the air outlet 202.

[0028] When air flows to the vicinity of blade 208, because blade 208 is spiral and rotatable, it rotates under the action of airflow. This rotation causes the air pressure near the air outlet 202 to decrease, forming a negative pressure area that draws air outward. Multiple sets of air inlet pipes 203 are distributed inside the insulator body 1, providing channels for airflow and carrying away the heat inside the insulator body 1. The heat is then discharged from the insulator body 1 through the air outlet 202, which greatly reduces the temperature change inside the insulator body 1, reduces thermal expansion stress, and thus prevents the insulator from cracking due to thermal expansion, slows down the aging rate of the insulator material, and extends its service life.

[0029] By setting a convex ring 204, an inner ring 205, and a movable ball 207, a spherical support structure is formed between the outer ring 206 and the inner ring 205, which transforms the original sliding friction into rolling friction. When the airflow impacts the blade 208, the outer ring 206 rolls on the movable ball 207, thereby driving the blade 208 to rotate more easily, reducing rotational resistance, and improving the rotational sensitivity and stability of the blade 208. The blade 208 can rotate with the airflow more quickly and smoothly, ensuring that a negative pressure zone is quickly formed near the outlet 202, improving cooling efficiency. The design of the spiral blade 208 can generate rotating airflow, causing the airflow to leave quickly near the outlet 202, improving the efficiency of hot air exhaust and avoiding hot air stagnation.

[0030] A convex ring 204 is fixedly connected to the inner wall of the air inlet duct 203. The convex ring 204 is located near the air inlet 201. The airflow passes through the narrowed convex ring 204, which increases the airflow velocity. The air gains more kinetic energy inside the air inlet duct 203. The increased airflow velocity makes heat transfer more efficient. At high flow rates, the air can more effectively remove the heat inside the insulator body 1, thereby improving cooling efficiency and preventing the expansion and cracking of the porcelain insulator caused by heat accumulation.

[0031] In addition, a guide strip 3 is fixedly connected to the inner wall of the air inlet duct 203. The guide strip 3 is spirally arranged on the inner wall of the air inlet duct 203. The guide strip 3 increases the contact area between the airflow and the inside of the insulator body 1, which allows the airflow to fully contact the hot surface of the insulator body 1 and enhances the heat exchange efficiency. The spiral guide strip 3 also disrupts the laminar flow state of the airflow, making the airflow more effective in carrying away heat. By guiding the airflow along the spiral path of the air inlet duct 203, the cold air can be brought into various areas of the insulator body 1 more evenly, ensuring the uniformity of the internal temperature of the insulator body 1 and further optimizing the cooling effect.

[0032] In this invention, when air flows to the vicinity of the blade 208, the blade 208 is spiral and rotatable. Under the action of airflow, the blade 208 rotates. This rotation causes the air pressure near the air outlet 202 to decrease, forming a negative pressure area that draws outward. Multiple sets of air inlet pipes 203 are distributed inside the insulator body 1 to provide channels for airflow and carry away the heat inside the insulator body 1. The inner wall of the air inlet pipe 203 is fixedly connected with a convex ring 204. The convex ring 204 is located near the air inlet 201. The airflow passes through the narrowed convex ring 204, which increases the airflow velocity. The air gains more kinetic energy inside the air inlet pipe 203. The increased airflow velocity makes heat transfer more efficient. At high flow rates, the air can more effectively carry away the heat inside the insulator body 1.

[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A porcelain insulator resistant to expansion and cracking, comprising an insulator body (1), characterized in that: The insulator body (1) is internally provided with a cooling assembly (2), the cooling assembly (2) comprising: An air inlet (201) is provided on the bottom end face of the insulator body (1). An air outlet (202) is provided on the bottom end face of the insulator body (1). The air inlet (201) and the air outlet (202) are connected through an air inlet pipe (203). A protruding ring (204) is fixedly connected to the inner wall of the air inlet pipe (203). The inner ring (205) has a movable ball (207) movably connected to its outer wall, and an outer ring (206) movably connected to its outer wall. The outer ring (206) has a blade (208) fixedly connected to its outer wall.

2. The anti-expansion crack porcelain insulator according to claim 1, characterized in that: The number of air inlet pipes (203) is set in several groups, and the several groups of air inlet pipes (203) are set inside the insulator body (1).

3. The anti-expansion cracking porcelain insulator according to claim 1, characterized in that: The insulator body (1) includes an insulating component and a connecting metal component. The insulating component is arranged in an umbrella shape, and the connecting metal component penetrates the insulating component. Both ends of the connecting metal component are threaded with bolts.

4. The anti-expansion crack porcelain insulator according to claim 3, characterized in that: The inner ring (205) is fixedly connected to the outer wall of the connecting metal part, and the blade (208) is located directly below the insulating part.

5. The anti-expansion cracking porcelain insulator according to claim 1, characterized in that: The number of movable balls (207) is set in several groups, and the several groups of movable balls (207) are equally spaced between the inner ring (205) and the outer ring (206).

6. The anti-expansion cracking porcelain insulator according to claim 1, characterized in that: The blade (208) is located directly below the air outlet (202). The blade (208) is movably connected to the bottom end face of the insulator body (1). The blade (208) is arranged in a spiral shape.

7. The anti-expansion crack porcelain insulator according to claim 1, characterized in that: The inner wall of the air inlet pipe (203) is fixedly connected with a guide strip (3), which is spirally arranged on the inner wall of the air inlet pipe (203).

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