Integrated anti-deformation mutual inductor expander cover and forming method thereof

Abstract

This invention discloses an integrated anti-deformation transformer expander housing and its molding method, relating to the field of transformer expander housings. This integrated anti-deformation transformer expander housing utilizes the corrugated cylindrical shape of the integrally molded outer housing to increase the moment of inertia of the cross-section through the undulating corrugations, thereby improving the axial compressive strength, radial instability resistance, and bending stiffness of the cylinder, offsetting deformation caused by external forces and internal pressure. During axial impact deformation, the sliding between the reinforcing plates in the same group, in conjunction with a guiding mechanism, guides the deformation of the outer housing cylinder. Simultaneously, the plate groove limits the sliding distance between the reinforcing plates in the same group, preventing excessive deformation that could impact the internal expander. Furthermore, the close fit between the reinforcing plates provides support during lateral impacts, improving the outer housing cylinder's resistance to lateral impacts and preventing bending.

Description

Technical Field

[0001] This invention specifically relates to an integrated anti-deformation transformer expander cover and its molding method, and pertains to the field of transformer expander covers. Background Technology

[0002] The transformer expander housing refers to the protective outer shell that wraps around the transformer expander. It is an important component of the oil-immersed transformer oil tank system. It resists external wind, sand, rain, dust and other erosion, and prevents the expander body from being mechanically damaged. It is a transformer used in harsh environments such as outdoor, dirty, and high-altitude environments, and is an important auxiliary component to ensure the safe and stable operation of the equipment.

[0003] A cover for an expander, disclosed in CN217008871U, includes a cover body, an observation panel, and a height release mechanism. The cover body is positioned over the expander, and three observation windows are evenly distributed on its side. The observation panel is embedded within each observation window via a sealing ring. The sealing ring has an S-shaped bend in cross-section. The observation panel has an arc-shaped cross-section. The height release mechanism is located at the lower part of the cover body. The arc-shaped observation panel effectively increases the multi-directional observation of the internal working conditions of the cover body, allowing for timely detection and assessment of potential risks within the cover body, facilitating timely emergency response. Simultaneously, the height release mechanism effectively buffers against abnormal rises in the expander, preventing damage to the equipment.

[0004] In existing equipment, when the outer cover is subjected to impact, the corrugated cylinder lacks internal support and guidance, which causes the outer cover cylinder to bend and deform easily. This bending reduces the expansion range of the internal expander and causes obstruction during expansion and contraction. Summary of the Invention

[0005] To address the aforementioned problems, a technical solution is proposed: an integrated anti-deformation transformer expander housing, comprising:

[0006] A connecting mechanism, wherein a cylindrical mechanism is fixedly installed on the top of the connecting mechanism, and a guide mechanism is installed on the outside of the cylindrical mechanism;

[0007] The cylindrical structure includes an outer casing, which is a corrugated cylinder. Reinforcing plates are fixedly installed in the corrugated grooves on the inner wall of the outer casing. The reinforcing plates are evenly installed in pairs on the inner wall of the outer casing. The end of the reinforcing plate away from the outer casing is bent vertically downwards. Grooves are formed on both the top of the side of the reinforcing plate away from the outer casing and the bottom of the side closer to the outer casing. In the same group of reinforcing plates, the upper reinforcing plate fits and slides into contact with the groove of the lower reinforcing plate on the side away from the outer casing through the groove closer to the outer casing. Through the cooperation of the reinforcing plates and the outer casing, and utilizing the corrugated shape of the integrally formed outer casing, the undulating corrugations increase the moment of inertia of the cross-section, thereby improving the axial compressive strength, radial instability resistance, and bending stiffness of the cylinder. To counteract deformation caused by external forces and internal pressure, during axial impact deformation, the sliding between the reinforcing plates in the same group, in conjunction with the guiding mechanism, guides the deformation of the outer cover cylinder. At the same time, the plate groove limits the sliding distance between the reinforcing plates in the same group, preventing excessive deformation that could cause impact to the internal expander. Meanwhile, the adhesion between the reinforcing plates provides support during lateral impact, improving the outer cover cylinder's resistance to lateral impact and preventing bending. A top cylinder is installed at the top of the inner wall of the outer cover cylinder, and an annular groove is opened on the outer side of the top cylinder. A top pad ring is fixedly installed at the annular groove of the top cylinder. A top clamp is installed at the top of the outer side of the outer cover cylinder, and the outer cover cylinder is fixedly connected to the outer side of the top cylinder through the top clamp. The outer side of the top pad ring is in contact with the inner wall of the outer cover cylinder.

[0008] Preferably, a top cover is fixedly installed on the top of the top cylinder. A circular groove is formed at the center of the top of the top cover, and an exhaust pipe is fixedly installed at the circular groove of the top cover. A bottom cylinder is installed at the bottom of the inner wall of the outer cover cylinder. A protruding ring is provided on the outer side of the bottom cylinder. The bottom cylinder is connected to the bottom of the outer cover cylinder through the protruding ring. After installation, the protruding ring locks and restricts the outer cover cylinder, and at the same time, it is fixed in conjunction with the bottom clamp, which increases the fixing effect on the outer cover cylinder and prevents the connection from coming off during impact. Simultaneously, during fixing, the top and bottom pads cooperate to fit tightly against the inner wall of the outer casing, ensuring the waterproof and dustproof effect at the connection point of the outer casing. A groove is provided on the outer side of the convex ring, and a bottom pad is fixedly installed at the groove of the convex ring of the bottom cylinder. A bottom clamp is installed at the bottom of the outer side of the outer casing, and the outer casing is fixedly connected to the outer side of the bottom cylinder through the bottom clamp. A perforated plate is fixedly installed on the outer side of the bottom cylinder, and the perforated plate is evenly installed on the outer side of the bottom cylinder, with a through hole at the top.

[0009] Preferably, the connecting mechanism includes a fixed base, a raised ring on the top of the fixed base, and a sealing ring engaged with the outer side of the raised ring. A fixed cylinder is fixedly installed on the top of the fixed base, and the top of the fixed cylinder is connected to the bottom flange of the bottom cylinder. An annular groove is formed at the bottom of the fixed base, and an inner sliding ring is slidably installed in the annular groove of the fixed base. A groove is formed on the inner wall of the inner sliding ring, and an inner gasket ring is fixedly installed in the groove of the inner sliding ring. An elastic ring is fixedly installed between the top of the inner sliding ring and the inner wall of the fixed base. A sealing gasket is fixedly installed at the bottom of the ring. It is connected to the inner gasket through an elastic ring. When the sealing gasket is installed and squeezed, the pressure is transmitted to the elastic ring and the inner gasket through the inner slip ring, causing the elastic ring and the inner gasket to undergo elastic deformation. At the same time, the elastic force generated after deformation is transmitted to the sealing gasket through the inner slip ring, causing the sealing gasket to be squeezed on the mating surface. During the squeezing, the deformation fits the joint surface, preventing gaps from appearing on the joint surface, which would allow dust and moisture to enter the interior. The sealing gasket and the inner gasket are made of rubber material, and an observation window is fixedly installed on the outside of the fixing seat.

[0010] Preferably, the guiding mechanism includes a guide rod with a threaded bottom end, and the guide rod is fixedly connected to the through hole of the orifice plate via a nut. A fixing ring is fixedly installed on the top of the guide rod, and a sleeve plate is slidably installed on the outer side of the guide rod. The end of the sleeve plate away from the guide rod is fixedly connected to the outer side of the top cylinder. A circular groove is formed on the top of the sleeve plate, and arc protrusions are evenly distributed in the circular groove. The sleeve plate slides and adapts to the outer side of the guide rod through the arc protrusions. A sliding ring is slidably installed on the outer side of the guide rod, and the bottom of the sliding ring fits against the top of the sleeve plate. A supporting arc plate is fixedly installed between the sliding ring and the fixing ring. Utilizing the elastic material characteristics of the supporting arc plate, when the outer casing is subjected to vertical impact deformation, the sliding adaptation between the sleeve plate and the guide rod guides the deformation direction. Simultaneously, during rebound, the sliding ring squeezes the supporting arc plate, using the elastic deformation of the supporting arc plate for buffering, increasing the rebound deformation reset resistance, and preventing excessively fast rebound deformation speed, which could damage the outer casing. The supporting arc plate is made of an elastic material.

[0011] A method for molding an integrated anti-deformation transformer expander cover comprises the following steps:

[0012] S1. Material processing: The surface of the board blank is treated by degreasing, rust removal and phosphating in sequence to remove oil, oxide scale and impurities from the surface of the board. After phosphating, the board blank is dried. At the same time, the board blank is tempered by heating and holding it at a certain temperature, and then slowly cooling it to room temperature to eliminate the internal stress of the board.

[0013] S2. First stretching: Place the processed sheet blank into the forming mold, fix the position of the sheet blank, and ensure that the sheet blank is precisely aligned with the cavity. Then start the stretching equipment to stretch and form the sheet blank to form a preliminary cover structure.

[0014] S3. Secondary molding: Maintain the positioning of the cover in the mold, perform secondary molding on the vertical walls and open parts of the initial cover, and process the deformation-resistant structure.

[0015] S4. Cover shaping: Place the finished cover into the shaping mold for shaping, and correct the roundness, verticality and size of the cover.

[0016] In the secondary molding process, the vertical wall forming involves processing a continuous corrugated structure on the vertical wall to form a corrugated vertical wall structure. During the shaping of the cover, the formed cover is heated and pressure is applied in the shaping mold to ensure that the roundness, verticality and size of the outer cover meet the requirements.

[0017] This invention provides an integrated anti-deformation transformer expander cover, which has the following beneficial effects:

[0018] (i) By combining the reinforcing plates with the outer casing, the corrugated shape of the outer casing is integrated and molded. The undulations of the corrugations increase the moment of inertia of the cross section, thereby improving the axial compressive strength, radial instability resistance, and bending stiffness of the casing. This counteracts the deformation caused by external forces and internal pressure. During axial impact deformation, the sliding between the reinforcing plates in the same group, in conjunction with the guiding mechanism, guides the deformation of the outer casing. At the same time, the plate groove limits the sliding distance between the reinforcing plates in the same group, preventing excessive deformation that could cause impact to the internal expander. Furthermore, the close fit between the reinforcing plates provides support during lateral impacts, improving the outer casing's resistance to lateral impacts and preventing bending of the outer casing.

[0019] (ii) The bottom cylinder is connected to the bottom of the outer cover cylinder through the convex ring. After installation, the convex ring is used to lock and restrict the outer cover cylinder. At the same time, the bottom clamp is used to lock and fix it, which increases the fixing effect of the outer cover cylinder and prevents the connection from coming off when the outer cover cylinder is impacted. At the same time, when fixing, the top pad ring and the bottom pad ring are used to fit tightly against the inner wall of the outer cover cylinder, ensuring the waterproof and dustproof effect of the connection position of the outer cover cylinder.

[0020] (III) When the sealing gasket is installed by the cooperation of the elastic ring and the inner gasket ring, the pressure is transmitted to the elastic ring and the inner gasket ring through the inner slip ring, causing the elastic ring and the inner gasket ring to undergo elastic deformation. At the same time, the elastic force generated after deformation is transmitted to the sealing gasket through the inner slip ring, causing the sealing gasket to be squeezed on the mating surface. During the squeezing, the deformation fits the joint surface, preventing gaps from appearing on the joint surface, which would allow dust and moisture to enter the interior.

[0021] (iv) By utilizing the elastic material characteristics of the supporting arc plate, when the outer casing is subjected to vertical impact deformation, the sliding fit between the sleeve plate and the guide rod is used to guide the deformation direction. At the same time, during the rebound, the sliding ring is driven to squeeze the supporting arc plate, and the elastic deformation of the supporting arc plate is used for buffering, increasing the rebound deformation reset resistance, and preventing the rebound deformation speed from being too fast, which could lead to damage to the outer casing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the cylindrical body mechanism and the connecting mechanism of the present invention;

[0024] Figure 3 This is a schematic diagram of the cylindrical mechanism of the present invention;

[0025] Figure 4 This is a sectional view of the cylindrical mechanism of the present invention;

[0026] Figure 5 This is a partial sectional view of the cylindrical mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection mechanism of the present invention;

[0028] Figure 7 This is a partial structural schematic diagram of the connecting mechanism of the present invention;

[0029] Figure 8 This is a schematic diagram of the guiding mechanism of the present invention;

[0030] Figure 9 This is a partial structural schematic diagram of the guiding mechanism of the present invention;

[0031] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of structure A in the middle;

[0032] Figure 11 This is a schematic diagram of the molding method of the present invention.

[0033] In the diagram: 1. Connecting mechanism; 2. Cylinder mechanism; 3. Guide mechanism; 11. Fixed seat; 12. Observation window; 13. Fixed cylinder; 14. Sealing ring; 15. Inner slip ring; 16. Sealing gasket; 17. Inner gasket ring; 18. Elastic ring; 201. Outer cover cylinder; 202. Exhaust pipe; 203. Top cover; 204. Bottom cylinder; 205. Reinforcing plate; 206. Top gasket ring; 207. Top clamp; 208. Top cylinder; 209. Bottom clamp; 210. Bottom gasket ring; 211. Orifice plate; 31. Guide rod; 32. Sliding ring; 33. Support arc plate; 34. Fixed ring; 35. Sleeve plate. Detailed Implementation

[0034] Example 1, Reference Figures 1 to 5 The present invention provides the following technical solution:

[0035] An integrated anti-deformation transformer expander housing includes:

[0036] A connecting mechanism 1 is provided, and a cylindrical mechanism 2 is fixedly installed on the top of the connecting mechanism 1. A guide mechanism 3 is installed on the outside of the cylindrical mechanism 2.

[0037] The cylindrical mechanism 2 includes an outer cover cylinder 201, which is a corrugated cylinder. Reinforcing plates 205 are fixedly installed in the corrugated grooves on the inner wall of the outer cover cylinder 201. The reinforcing plates 205 are evenly installed in pairs on the inner wall of the outer cover cylinder 201. The end of the reinforcing plate 205 away from the outer cover cylinder 201 is bent vertically downwards. The top and bottom of the side of the reinforcing plate 205 away from the outer cover cylinder 201 are both provided with grooves. In the same group of reinforcing plates 205, the upper reinforcing plate 205 fits and slides against the groove on the side of the lower reinforcing plate 205 away from the outer cover cylinder 201 through the groove on the side near the outer cover cylinder 201. A top cylinder 208 is installed on the top of the inner wall of the outer cover cylinder 201. When impacted by an external object, the top cylinder 208 is shaped to withstand the downward impact on the outer cover cylinder 201. At 01, the corrugated cylinder of the outer cover 201, in conjunction with the guidance of the guide mechanism 3, increases the moment of inertia of the cross section through the undulation of the corrugations, thereby improving the axial compressive strength, radial instability resistance, and bending stiffness of the cylinder, and offsetting the deformation caused by external force and internal pressure. When subjected to lateral impact, the reinforcing plate 205 provides support and protection inside the outer cover 201. The fitting of the grooves between the reinforcing plates 205 in the same group restricts the bending of the outer cover 201. The outer side of the top cylinder 208 is provided with an annular groove, and a top pad ring 206 is fixedly installed at the annular groove of the top cylinder 208. A top clamp 207 is installed on the top of the outer side of the outer cover 201. The outer cover 201 is fixedly connected to the outer side of the top cylinder 208 through the top clamp 207, and the outer side of the top pad ring 206 is fitted with the inner wall of the outer cover 201.

[0038] A top cover 203 is fixedly installed on the top of the top cylinder 208. A circular groove is formed at the center of the top of the top cover 203, and an exhaust pipe 202 is fixedly installed in the circular groove of the top cover 203. A bottom cylinder 204 is installed at the bottom of the inner wall of the outer cover cylinder 201. A convex ring is provided on the outer side of the bottom cylinder 204, and an annular groove is formed on the outer side of the convex ring. A bottom pad ring 210 is fixedly installed at the annular groove of the convex ring of the bottom cylinder 204. The bottom cylinder 204, which is fixedly connected to the fixed cylinder 13 through the corrugated cylinder body of the outer cover cylinder 201 and through the bottom clamp 209 at the bottom of the outer cover cylinder 201, is fixedly connected to the fixed cylinder 13. Next, the top cylinder 208 is fixedly connected to the top of the outer cover cylinder 201 by the top clamp 207. The top sealing cover is fixedly connected to the top of the top cylinder 208, which seals the space inside the outer cover cylinder 201 and forms a sealed package on the outside of the expander to isolate dust and moisture. The bottom of the outer cover cylinder 201 is installed with a bottom clamp 209. The outer cover cylinder 201 is fixedly connected to the outside of the bottom cylinder 204 by the bottom clamp 209. The bottom cylinder 204 is fixedly installed with a perforated plate 211. The perforated plate 211 is evenly installed on the outside of the bottom cylinder 204, and the top of the perforated plate 211 has a through hole.

[0039] Example 2, based on Example 1, with reference to Figures 6 to 7 The connecting mechanism 1 includes a fixed base 11. A protruding ring is provided on the top of the fixed base 11, and a sealing ring 14 is engaged with the outer side of the protruding ring. A fixed cylinder 13 is fixedly installed on the top of the fixed base 11. The top of the fixed cylinder 13 is connected to the bottom flange of the bottom cylinder 204. An annular groove is provided on the bottom of the fixed base 11, and an inner sliding ring 15 is slidably installed in the annular groove of the fixed base 11. A groove is provided on the inner wall of the inner sliding ring 15. During connection, the fixed base 11 is fixedly connected to the oil conservator of the current transformer using bolts. Simultaneously, during connection and installation, the sealing gasket 16 is brought into contact with the connection surface. During the connection and locking process, the contact pressure between the sealing gasket 16 and the contact surface gradually increases, and the pressure is transmitted through the inner sliding ring 15. The elastic ring 18 and the inner gasket 17 are compressed under pressure, causing the inner sliding ring 15 to slide on the inner wall of the fixed seat 11. At the same time, the inner gasket 17 and the elastic ring 18 generate elastic force after deformation. The elastic force is transmitted to the sealing gasket 16 through the inner sliding ring 15, increasing the contact pressure between the sealing gasket 16 and the connecting surface, forming a seal. The inner gasket 17 is fixedly installed in the groove of the inner sliding ring 15. The elastic ring 18 is fixedly installed between the top of the inner sliding ring 15 and the inner wall of the fixed seat 11. The sealing gasket 16 is fixedly installed at the bottom of the inner sliding ring 15. The sealing gasket 16 and the inner gasket 17 are made of rubber. An observation window 12 is fixedly installed on the outer side of the fixed seat 11.

[0040] Example 3, based on Examples 1 and 2, with reference to Figures 8 to 11The guiding mechanism 3 includes a guide rod 31, the bottom end of which is threaded, and the guide rod 31 is fixedly connected to the through hole of the orifice plate 211 through a nut. A fixing ring 34 is fixedly installed on the top of the guide rod 31, and a sleeve plate 35 is slidably installed on the outer side of the guide rod 31. The end of the sleeve plate 35 away from the guide rod 31 is fixedly connected to the outer side of the top cylinder 208. A circular groove is opened on the top of the sleeve plate 35. Through the guide rod 31, it surrounds the outer side of the outer cover cylinder 201, blocking the foreign object when it is subjected to lateral impact, preventing large foreign objects from directly impacting the outer cover cylinder 201. At the same time, when the outer cover cylinder 201 is subjected to vertical impact and undergoes expansion and contraction deformation, By utilizing the contact between the arc protrusion at the circular groove of the sleeve 35 and the outer side of the guide rod 31, and in conjunction with the fixed connection between the sleeve 35 and the top cylinder 208, the sliding between the sleeve 35 and the guide rod 31 is used for guidance during impact. At the same time, the elastic material deformation characteristics of the support arc plate 33 are used to buffer the impact. The circular groove of the sleeve 35 is uniformly provided with arc protrusions. The sleeve 35 slides and adapts to the outer side of the guide rod 31 through the arc protrusions. A sliding ring 32 is slidably installed on the outer side of the guide rod 31. The bottom of the sliding ring 32 is in contact with the top of the sleeve 35. A support arc plate 33 is fixedly installed between the sliding ring 32 and the fixed ring 34. The support arc plate 33 is made of elastic material.

[0041] A method for molding an integrated anti-deformation transformer expander cover comprises the following steps:

[0042] S1. Material processing: The surface of the board blank is treated by degreasing, rust removal and phosphating in sequence to remove oil, oxide scale and impurities from the surface of the board. After phosphating, the board blank is dried. At the same time, the board blank is tempered by heating and holding it at a certain temperature, and then slowly cooling it to room temperature to eliminate the internal stress of the board.

[0043] S2. First stretching: Place the processed sheet blank into the forming mold, fix the position of the sheet blank, and ensure that the sheet blank is precisely aligned with the cavity. Then start the stretching equipment to stretch and form the sheet blank to form a preliminary cover structure.

[0044] S3. Secondary molding: Maintain the positioning of the cover in the mold, perform secondary molding on the vertical walls and open parts of the initial cover, and process the deformation-resistant structure.

[0045] S4. Cover shaping: Place the finished cover into the shaping mold for shaping, and correct the roundness, verticality and size of the cover.

[0046] In the secondary molding process, the vertical wall forming involves processing a continuous corrugated structure on the vertical wall to form a corrugated vertical wall structure. During the shaping of the cover, the formed cover is heated and pressure is applied in the shaping mold to ensure that the roundness, verticality and size of the outer cover meet the requirements.

[0047] In use, it is connected to the oil tank of the current transformer through the connecting mechanism 1. After connection, the expander is covered inside by the cylinder mechanism 2 for protection. This provides expansion space for the expander during operation and protection against external impacts.

[0048] In the connection mechanism 1, the fixed seat 11 is fixedly connected to the oil tank of the transformer by bolts during connection. At the same time, during the connection and installation, the sealing gasket 16 is made to fit against the connection surface. During the connection and locking process, the contact pressure between the sealing gasket 16 and the contact surface gradually increases. The pressure is transmitted to the elastic ring 18 and the inner gasket 17 through the inner slip ring 15, causing the inner gasket 17 and the elastic ring 18 to deform and compress under pressure. This causes the inner slip ring 15 to slide on the inner wall of the fixed seat 11. At the same time, the inner gasket 17 and the elastic ring 18 generate elastic force after deformation. The elastic force is transmitted to the sealing gasket 16 through the inner slip ring 15, increasing the contact pressure between the sealing gasket 16 and the connection surface, thus forming a seal.

[0049] In the cylinder mechanism 2, the corrugated cylinder of the outer cover cylinder 201, and the bottom cylinder 204 fixedly connected to the fixed cylinder 13 by the bottom clamp 209 at the bottom of the outer cover cylinder 201, together with the top cylinder 208 fixedly connected to the top of the outer cover cylinder 201 by the top clamp 207, and the top cover fixedly connected to the top of the top cylinder 208, seal the space inside the outer cover cylinder 201, forming a sealed enclosure on the outside of the expander, isolating dust and moisture. At the same time, when the outer cover cylinder 201 is impacted by an external object, when the impact impacts the outer cover cylinder 201 downward, the corrugated cylinder of the outer cover cylinder 201, together with the guidance of the guide mechanism 3, increases the moment of inertia of the cross section through the undulation of the corrugations, improves the axial compressive strength, radial instability resistance, and bending stiffness of the cylinder, and offsets the deformation caused by external force and internal pressure. When subjected to lateral impact, the reinforcing plate 205 provides support and protection inside the outer cover cylinder 201, and the fit of the plate grooves between the reinforcing plates 205 in the same group restricts the bending of the outer cover cylinder 201.

[0050] In the guide mechanism 3, the guide rod 31 surrounds the outer side of the outer cover cylinder 201. When subjected to lateral impact from a foreign object, it blocks the foreign object and prevents large foreign objects from directly impacting the outer cover cylinder 201. At the same time, when the outer cover cylinder 201 undergoes expansion and contraction deformation due to vertical impact, the arc protrusion at the circular groove of the sleeve plate 35 contacts the outer side of the guide rod 31. Combined with the fixed connection between the sleeve plate 35 and the top cylinder 208, the sliding between the sleeve plate 35 and the guide rod 31 guides the impact. At the same time, the elastic material deformation characteristics of the support arc plate 33 provide buffering during impact.

Claims

1. An integrated anti-deformation transformer expander cover, characterized in that, include: A connecting mechanism, wherein a cylindrical mechanism is fixedly installed on the top of the connecting mechanism, and a guide mechanism is installed on the outside of the cylindrical mechanism; The cylindrical structure includes an outer cover cylinder, which is a corrugated cylinder. Reinforcing plates are fixedly installed in the corrugated grooves on the inner wall of the outer cover cylinder. The reinforcing plates are evenly installed in pairs on the inner wall of the outer cover cylinder. The end of the reinforcing plate away from the outer cover cylinder is bent vertically downwards. The top of the reinforcing plate away from the outer cover cylinder and the bottom of the reinforcing plate near the outer cover cylinder both have grooves. In the same group of reinforcing plates, the upper reinforcing plate is fitted and slidably adapted to the groove of the lower reinforcing plate away from the outer cover cylinder through the groove near the outer cover cylinder. A top cylinder is installed at the top of the inner wall of the outer cover cylinder. An annular groove is formed on the outer side of the top cylinder, and a top pad ring is fixedly installed in the annular groove of the top cylinder. A top clamp is installed at the top of the outer side of the outer cover cylinder. The outer cover cylinder is fixedly connected to the outer side of the top cylinder through the top clamp, and the outer side of the top pad ring is fitted against the inner wall of the outer cover cylinder.

2. The integrated anti-deformation transformer expander cover according to claim 1, characterized in that: A top cover is fixedly installed on the top of the top cylinder. A circular groove is opened at the center of the top of the top cover, and an exhaust pipe is fixedly installed at the circular groove of the top cover. A bottom cylinder is installed at the bottom of the inner wall of the outer cover cylinder. A protruding ring is provided on the outer side of the bottom cylinder, and an annular groove is opened on the outer side of the protruding ring. A bottom pad ring is fixedly installed at the annular groove of the protruding ring of the bottom cylinder. A bottom clamp is installed at the bottom of the outer side of the outer cover cylinder. The outer cover cylinder is fixedly connected to the outer side of the bottom cylinder through the bottom clamp. A perforated plate is fixedly installed on the outer side of the bottom cylinder. The perforated plate is evenly installed on the outer side of the bottom cylinder, and a through hole is opened at the top of the perforated plate.

3. The integrated anti-deformation transformer expander cover according to claim 2, characterized in that: The connecting mechanism includes a fixed seat, a protruding ring on the top of the fixed seat, and a sealing ring snapped onto the outer side of the protruding ring. A fixed cylinder is fixedly installed on the top of the fixed seat, and the top of the fixed cylinder is connected to the bottom flange of the bottom cylinder. The bottom of the fixing seat is provided with an annular groove, and an inner sliding ring is slidably installed in the annular groove of the fixing seat. The inner wall of the inner sliding ring is provided with a groove, and an inner pad ring is fixedly installed in the groove of the inner sliding ring.

4. The integrated anti-deformation transformer expander cover according to claim 3, characterized in that: An elastic ring is fixedly installed between the top of the inner slip ring and the inner wall of the fixed seat. A sealing gasket is fixedly installed at the bottom of the inner slip ring. The sealing gasket and the inner gasket are made of rubber. An observation window is fixedly installed on the outer side of the fixed seat.

5. The integrated anti-deformation transformer expander cover according to claim 4, characterized in that: The guiding mechanism includes a guide rod, the bottom end of which is threaded, and the guide rod is fixedly connected to the through hole of the orifice plate by a nut. A retaining ring is fixedly installed on the top of the guide rod.

6. The integrated anti-deformation transformer expander cover according to claim 5, characterized in that: A sleeve plate is slidably installed on the outer side of the guide rod. The end of the sleeve plate away from the guide rod is fixedly connected to the outer side of the top cylinder. A circular groove is opened on the top of the sleeve plate, and arc protrusions are evenly arranged in the circular groove of the sleeve plate. The sleeve plate is slidably adapted to the outer side of the guide rod through the arc protrusions.

7. The integrated anti-deformation transformer expander cover according to claim 6, characterized in that: A sliding ring is slidably installed on the outer side of the guide rod. The bottom of the sliding ring is in contact with the top of the sleeve plate. A supporting arc plate is fixedly installed between the sliding ring and the fixed ring. The supporting arc plate is made of elastic material.

8. A method for molding an integrated anti-deformation transformer expander cover, characterized in that, It consists of the following steps: S1. Material processing: The surface of the board blank is treated by degreasing, rust removal and phosphating in sequence to remove oil, oxide scale and impurities from the surface of the board. After phosphating, the board blank is dried. At the same time, the board blank is tempered by heating and holding it at a certain temperature, and then slowly cooling it to room temperature to eliminate the internal stress of the board. S2. First stretching: Place the processed sheet blank into the forming mold, fix the position of the sheet blank, and ensure that the sheet blank is precisely aligned with the cavity. Then start the stretching equipment to stretch and form the sheet blank to form a preliminary cover structure. S3. Secondary molding: Maintain the positioning of the cover in the mold, perform secondary molding on the vertical walls and open parts of the initial cover, and process the deformation-resistant structure. S4. Cover shaping: Place the finished cover into the shaping mold for shaping, and correct the roundness, verticality and size of the cover.

9. The method for forming an integrated anti-deformation transformer expansion housing according to claim 8, characterized in that: In the secondary molding process, the vertical wall forming involves processing a continuous corrugated structure on the vertical wall to form a corrugated vertical wall structure.

10. The method for forming an integrated anti-deformation transformer expander cover according to claim 9, characterized in that: During the shaping process, the shaped cover is heated and pressure is applied in the shaping mold to ensure that the roundness, verticality, and dimensions of the outer cover meet the requirements.

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