Vacuum pouring tank for pouring dry-type transformer

Abstract

The invention relates to the technical field of transformer pouring tanks, and particularly discloses a vacuum pouring tank for pouring a dry-type transformer, the vacuum pouring tank comprises a tank body, mounting frames are symmetrically and fixedly connected to the outer surfaces of the two sides of the tank body, and a vacuum gauge is fixedly mounted on the side surface of the tank body; and a vacuum pipe is fixedly connected to the outer surface of the side, close to the vacuum gauge, of the tank body in a penetrating mode and arranged on the inner side of the mounting frame. When the interior of the tank body is in a vacuum state, the interior of the tank body is in a negative pressure state, and at the moment, the inner wall of the tank body is subjected to corresponding extrusion force under the suction action of negative pressure; the bottom plate and the top plate are fixedly mounted on the upper surface and the lower surface of the interior of the tank body, so that the two side surfaces of the tank body can be supported through the bottom plate and the top plate when the interior of the tank body is in a negative pressure state, the possibility of deformation of the tank body is greatly reduced, and the vacuum state in the tank body is protected; and the situation of air leakage caused by damage due to deformation of the tank body in a negative pressure state for a long time is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of transformer casting pots, in particular to a vacuum casting pot for casting dry-type transformers. Background Art

[0002] In the production process of transformers, the pouring of dry-type transformers is one of the key process steps, which has a direct impact on the final performance and reliability of the transformer. In the traditional transformer pouring process, a vacuum pouring tank is used to complete the pouring of materials such as resin in an environment without bubbles and impurities, thereby ensuring the insulation performance and mechanical strength of the transformer. However, the existing vacuum pouring tanks have some technical challenges and limitations in practical applications, which may affect the stability of the pouring process and the final quality of the transformer: Tank deformation problem: In a vacuum environment, the inner wall of the tank will be subjected to the extrusion force of the external atmospheric pressure. If the support structure of the tank is not designed reasonably, it may cause the tank to deform, affecting the casting accuracy and the service life of the tank.

[0003] Insufficient sealing performance: During the vacuum casting process, the sealing performance of the tank is crucial. If the sealing mechanism is not designed properly, air leakage may occur, and the ideal vacuum degree cannot be achieved, which will affect the curing process of the casting material and the quality of the final product.

[0004] Operational complexity: Some existing vacuum pouring tanks are complex to operate, requiring multiple steps and manual adjustments to achieve a vacuum environment, which not only increases the difficulty of operation but may also lead to operational errors and affect production efficiency. Summary of the invention

[0005] The present invention provides a vacuum pouring pot for pouring a dry-type transformer, which solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A vacuum pouring tank for pouring dry-type transformers, comprising a tank body, a pouring port is fixedly installed on the top of the tank body, mounting frames are symmetrically fixedly connected to the outer surfaces of both sides of the tank body, a vacuum gauge is fixedly installed on the side surface of the tank body, a vacuum tube is fixedly connected through the outer surface of the tank body on the side close to the vacuum gauge, and the vacuum tube is arranged on the inner side of the mounting frame, and further comprising: A support mechanism, wherein the support mechanism is fixedly installed inside the tank body and is also arranged directly below the pouring port, and the support mechanism is used to support the inner wall of the tank body; A sealing mechanism, which is fixedly installed in the vacuum tube and is used to seal when evacuating the tank; The supporting mechanism comprises a top plate, which is arranged in an arc shape, and the outer surface of the top plate is fixedly fitted and connected to the inner upper surface of the tank body. A matching groove is formed through the outer surface of the top plate, and the matching groove is arranged directly below the pouring port. A bottom plate is arranged below the top plate, and the bottom plate is also arranged in an arc shape. The lower surface of the bottom plate is fixedly fitted and connected to the inner lower surface of the tank body. The bottom plate and the top plate are arranged in the same size, and the bottom plate and the top plate are arranged symmetrically in the tank body. When it is necessary to cast the parts of the dry-type transformer, the parts to be cast can be placed into the tank body through the pouring port. When the parts are placed in the tank body, the pouring port is sealed. At this time, the inside of the tank body is evacuated to a vacuum state through a vacuum tube, and then the parts are cast through the pouring port.

[0007] Preferably, a stabilizing plate is provided above the bottom plate, and the stabilizing plate is configured in a semicircular shape. Two stabilizing plates are symmetrically provided in the tank body, and mounting rods are symmetrically passed through and fixedly connected at both ends of the stabilizing plate. The mounting rods fixedly connect the two stabilizing plates, and the two ends of the mounting rods are respectively fixedly connected to the inner surface of the tank body away from the bottom plate and the top plate.

[0008] Preferably, an auxiliary plate is arranged between the stabilizing plates, the auxiliary plate is arranged in an arc shape, two groups of the auxiliary plates are symmetrically arranged in the tank body, three of the auxiliary plates are arranged in one group, the curvature of the auxiliary plate is set to be consistent with the curvature of the stabilizing plate, one end of the auxiliary plate is fixedly sleeved on the middle outer surface of the mounting rod, and the other end of the auxiliary plate passes through and is fixedly connected to a limiting rod, and both ends of the limiting rod respectively pass through and are fixedly connected to the outer surfaces of the two stabilizing plates.

[0009] Preferably, the auxiliary plate is fixedly connected to a casting frame at one end close to the mounting rod, the cross-section of the casting frame is arranged to be nearly U-shaped, a connecting plate is arranged below the casting frame, the connecting plate is arranged to be disc-shaped, two connecting plates are provided, the two connecting plates are symmetrically fixedly connected to the bottom inner surfaces of the two stabilizing plates, and a corrugated bag is fixedly installed between the two connecting plates.

[0010] Preferably, a mounting plate is symmetrically fixedly connected to the bottom surface of the stabilizing plate, the mounting plate is arranged in a strip shape, a first telescopic rod is fixedly mounted on the outer surface of the mounting plate, five of the first telescopic rods are arranged in a group, the first telescopic rods are symmetrically arranged in two groups, one end of the two groups of the first telescopic rods away from the mounting plate is symmetrically fixedly connected to both sides of the upper surface of the bottom plate, and the internal cavity of the first telescopic rod is connected to the corrugated bag.

[0011] Preferably, the outer surface of the auxiliary plate close to one end of the mounting rod is fixedly connected with a support plate, two support plates are symmetrically arranged in the tank body, the support plate is arranged in an arc shape, the top of the support plate is arranged on the inner side of the top plate, the top outer surface of the support plate is fixedly connected with a second telescopic rod, three of the second telescopic rods are arranged in a group, and two groups of the second telescopic rods are symmetrically arranged in the tank body, one end of the second telescopic rod away from the support plate is fixedly connected to the inner surface of the top plate, the internal cavity of the second telescopic rod is connected to the corrugated bag, and when the interior of the tank body is in a vacuum negative pressure state, a squeezing force will be generated on the corrugated bag inside the tank body, and the greater the vacuum pressure, The greater the squeezing force on the corrugated bag, the more the corrugated bag will shrink when squeezed, thereby increasing the air pressure inside it, and then transmitting the internal air pressure into the first telescopic rod and the second telescopic rod, and then the first telescopic rod and the second telescopic rod begin to expand outward, respectively generating an outward driving force on the bottom plate and the top plate, and then the bottom plate and the top plate are firmly squeezed against the inner surface of the tank body by the driving force, thereby completing the squeezing and fixing of the tank body, and by setting the bottom plate and the top plate to have the same curvature as the inner wall of the tank body, the outer surfaces of the bottom plate and the top plate are firmly attached to the inner surface of the tank body, and the possibility of deformation of the tank body can be greatly reduced during the expansion process of the tank body.

[0012] Preferably, the sealing mechanism includes a positioning ring, the side surface of which is fixedly connected to the inner surface of the vacuum tube, the outer surface of the positioning ring is slidably connected to an extrusion rod via a spring, six extrusion rods are arranged at fixed intervals around the central axis of the positioning ring, and the end of the extrusion rod away from the positioning ring is fixedly connected to a telescopic disk.

[0013] Preferably, an exhaust pipe is fixedly connected to the middle part of the telescopic disk, a driving ring is fixedly connected to the inner surface of the telescopic disk, a plug-in ring is slidably inserted into the end of the driving ring away from the telescopic disk, the outer surface of the plug-in ring is fixedly connected to the inner surface of the positioning ring, a pressure ring is fixedly connected to the inside of the plug-in ring, a rubber ring is fixedly connected to the surface of the pressure ring on one side close to the driving ring, and the rubber ring and the driving ring are arranged on the same central axis.

[0014] Preferably, the cross-section of the rubber ring is set to be rectangular, the interior of the rubber ring is set to be hollow, the interior of the rubber ring is symmetrically fixedly connected with a folded ring, the cross-section of the folded ring is set to be triangular, the inner surface of the folded ring is fixedly connected with a reinforcing ring, and the cross-section of the reinforcing ring is circular. When the tank body is gradually evacuated to a vacuum through the exhaust pipe on the vacuum tube, the telescopic disk will gradually approach the positioning ring under the action of negative pressure, so that the driving ring moves into the plug-in ring, and finally the driving ring is in contact with the outer surface of the rubber ring, and as the moving distance of the driving ring increases, the extrusion pressure between the driving ring and the rubber ring gradually increases.

[0015] The present invention provides a vacuum pouring tank for pouring dry-type transformers. It has the following beneficial effects: 1. The vacuum casting tank for casting the dry-type transformer is in a negative pressure state when the tank is in a vacuum state. At this time, under the suction of the negative pressure, the inner wall of the tank will be subjected to a corresponding extrusion force. By fixing the bottom plate and the top plate on the upper and lower surfaces of the tank, the bottom plate and the top plate can be used to support the two side surfaces of the tank when the tank is in a negative pressure state, which greatly reduces the possibility of deformation of the tank, helps to protect the vacuum state in the tank, and avoids the deformation and damage of the tank due to long-term negative pressure, resulting in leakage.

[0016] 2. The vacuum casting tank for casting the dry-type transformer realizes elastic support for the inner wall of the tank through the cooperation of the corrugated bag and the telescopic rod. The elastic support can evenly distribute the force on the inner wall of the tank, reduce stress concentration points, and thus reduce the risk of cracks and breaks in the tank. At the same time, the elastic support helps to maintain the original shape and size of the tank, ensure its normal operation, and avoid direct rigid support force to cause greater damage to the tank under high negative pressure. The tank will generate noise and vibration due to changes in external pressure under negative pressure. The elastic support can absorb and reduce these vibrations and reduce the noise level. The tank will experience temperature changes during casting during operation. The elastic support can adapt to this thermal expansion and contraction to prevent damage to the tank caused by additional stress caused by temperature changes.

[0017] 3. The vacuum casting tank for casting the dry-type transformer automatically enhances the sealing effect through the negative pressure state of the vacuum tank, and when the driving ring squeezes the rubber ring, it will also squeeze the folding ring inside the rubber ring, so that the folding ring begins to shrink, and then the thickness of the rubber ring is continuously compressed, thereby greatly enhancing the contact area between the driving ring and the rubber ring, further improving the sealing effect, and the folding ring itself has a certain elastic force, so it will produce a reverse extrusion force on the driving ring, so that the fit between the driving ring and the rubber ring is tighter, and the sealing effect is once again improved. At the same time, by arranging a reinforcing ring on the inner surface of the folding plate, the bending amplitude of the folding plate can be suppressed by the reinforcing ring, thereby protecting the folding plate, avoiding excessive deformation of the folding plate, resulting in a decrease in supporting capacity and affecting the sealing effect. At the same time, since the negative pressure sealing does not require additional mechanical parts, the need for maintenance and repair is reduced, and the maintenance cost is reduced. There is no complex sealing system, which reduces the risk of wear and failure and improves the durability of the entire vacuum tank. In addition, the state of the negative pressure sealing system is usually easier to monitor, which is directly related to the pressure in the tank, so that it is easy to find and deal with problems in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention; Figure 2 It is a schematic diagram of the positions of the supporting mechanism and the sealing mechanism of the present invention; Figure 3 It is a structural schematic diagram of the support mechanism of the present invention; Figure 4 It is a schematic diagram of the partial structural disassembly of the support mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the corrugated bag of the present invention; Figure 6 It is a schematic diagram of the appearance structure of the sealing mechanism of the present invention; Figure 7 It is a structural schematic diagram of the sealing mechanism of the present invention; Figure 8 It is a schematic structural diagram of the rubber ring of the present invention; Fig. 9 The present invention Figure 8 A partial enlarged view of middle A.

[0019] In the figure: 1. tank body; 2. pouring port; 3. mounting frame; 4. vacuum gauge; 5. vacuum tube; 6. supporting mechanism; 61. top plate; 62. matching groove; 63. bottom plate; 64. stabilizing plate; 65. mounting rod; 66. auxiliary plate; 67. limiting rod; 68. pouring frame; 69. connecting plate; 610. bellows; 611. mounting plate; 612. first telescopic rod; 613. supporting plate; 614. second telescopic rod; 7. sealing mechanism; 71. positioning ring; 72. extrusion rod; 73. telescopic disk; 74. exhaust pipe; 75. driving ring; 76. plug-in ring; 77. pressure ring; 78. rubber ring; 79. folding ring; 710. reinforcing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of 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.

[0021] First embodiment: Figures 1 to 9 As shown, the present invention provides a technical solution: a vacuum pouring tank for pouring a dry-type transformer, comprising a tank body 1, a pouring port 2 is fixedly installed on the top of the tank body 1, mounting frames 3 are symmetrically fixedly connected to the outer surfaces of both sides of the tank body 1, a vacuum gauge 4 is fixedly installed on the side surface of the tank body 1, a vacuum tube 5 is fixedly connected through the outer surface of the tank body 1 on the side close to the vacuum gauge 4, and the vacuum tube 5 is arranged on the inner side of the mounting frame 3, and also includes: A support mechanism 6, which is fixedly mounted inside the tank body 1 and is also disposed directly below the pouring port 2. The support mechanism 6 is used to support the inner wall of the tank body 1; A sealing mechanism 7, which is fixedly installed in the vacuum tube 5 and is used for sealing when the tank body 1 is evacuated; The supporting mechanism 6 includes a top plate 61, which is arranged in an arc shape. The outer surface of the top plate 61 is fixedly fitted and connected to the inner upper surface of the tank body 1. A matching groove 62 is penetrated through the outer surface of the top plate 61. The matching groove 62 is arranged directly below the pouring port 2. A bottom plate 63 is arranged below the top plate 61. The bottom plate 63 is also arranged in an arc shape. The lower surface of the bottom plate 63 is fixedly fitted and connected to the inner lower surface of the tank body 1. The bottom plate 63 and the top plate 61 are arranged in the same size, and the bottom plate 63 and the top plate 61 are symmetrically arranged in the tank body 1.

[0022] During operation, when it is necessary to cast the parts of the dry-type transformer, the parts to be cast can be placed into the tank body 1 through the pouring port 2. After the parts are placed in the tank body 1, the pouring port 2 is sealed. At this time, the inside of the tank body 1 is evacuated to a vacuum state through the vacuum tube 5, and then the parts are cast through the pouring port 2. When the tank body 1 is in a vacuum state, the inside of the tank body 1 is in a negative pressure state. At this time, under the suction force of the negative pressure, the inner wall of the tank body 1 will be subjected to a corresponding extrusion force. By fixing the bottom plate 63 and the top plate 61 on the upper and lower surfaces of the tank body 1, it is possible to support the two side surfaces of the tank body 1 through the bottom plate 63 and the top plate 61 when the inside of the tank body 1 is in a negative pressure state, thereby greatly reducing the possibility of deformation of the tank body 1, helping to protect the vacuum state in the tank body 1, and avoiding deformation and damage of the tank body 1 due to being in a negative pressure state for a long time, resulting in air leakage.

[0023] Second embodiment: Figures 1 to 9 As shown, a stabilizing plate 64 is arranged above the bottom plate 63, and the stabilizing plate 64 is arranged in a semicircular shape. Two stabilizing plates 64 are symmetrically arranged in the tank body 1, and mounting rods 65 are symmetrically passed through and fixedly connected at both ends of the stabilizing plate 64. The mounting rods 65 fix the two stabilizing plates 64 together, and the two ends of the mounting rods 65 are respectively fixedly connected to the inner surface of the tank body 1 away from the bottom plate 63 and the top plate 61.

[0024] An auxiliary plate 66 is arranged between the stabilizing plates 64. The auxiliary plate 66 is arranged in an arc shape. Two groups of the auxiliary plates 66 are symmetrically arranged in the tank body 1. Three auxiliary plates 66 are arranged in one group. The curvature of the auxiliary plate 66 is set to be consistent with the curvature of the stabilizing plate 64. One end of the auxiliary plate 66 is fixedly sleeved on the middle outer surface of the mounting rod 65, and the other end of the auxiliary plate 66 is passed through and fixedly connected to the limiting rod 67. The two ends of the limiting rod 67 are respectively passed through and fixedly connected to the outer surfaces of the two stabilizing plates 64.

[0025] One end of the auxiliary plate 66 close to the mounting rod 65 is fixedly connected to a casting frame 68, the cross-section of the casting frame 68 is nearly U-shaped, a connecting plate 69 is arranged below the casting frame 68, the connecting plate 69 is arranged in a disc shape, two connecting plates 69 are arranged, the two connecting plates 69 are symmetrically fixedly connected to the bottom inner surfaces of the two stabilizing plates 64, and a corrugated bag 610 is fixedly installed between the two connecting plates 69.

[0026] The bottom surface of the stabilizing plate 64 is symmetrically fixedly connected with a mounting plate 611, which is arranged in a strip shape. The outer surface of the mounting plate 611 is fixedly mounted with a first telescopic rod 612. Five first telescopic rods 612 are arranged in a group. The first telescopic rods 612 are symmetrically arranged in two groups. The ends of the two groups of first telescopic rods 612 away from the mounting plate 611 are symmetrically fixedly connected to both sides of the upper surface of the bottom plate 63. The internal cavity of the first telescopic rod 612 is connected to the corrugated bag 610.

[0027] A support plate 613 is fixedly connected to the outer surface of one end of the auxiliary plate 66 near the mounting rod 65. Two support plates 613 are symmetrically arranged in the tank body 1. The support plate 613 is arranged in an arc shape. The top of the support plate 613 is arranged on the inner side of the top plate 61. A second telescopic rod 614 is fixedly connected to the top outer surface of the support plate 613. Three second telescopic rods 614 are arranged in a group. Two groups of second telescopic rods 614 are symmetrically arranged in the tank body 1. One end of the second telescopic rod 614 away from the support plate 613 is fixedly connected to the inner surface of the top plate 61. The internal cavity of the second telescopic rod 614 is connected to the corrugated bag 610.

[0028] During operation, when the interior of the tank body 1 is in a vacuum negative pressure state, an extrusion force is generated on the bellows 610 inside the tank body 1, and the greater the vacuum pressure, the greater the extrusion force on the bellows 610. When the bellows 610 is squeezed, it will shrink, thereby increasing the air pressure inside it, and then the internal air pressure will be transmitted into the first telescopic rod 612 and the second telescopic rod 614, and then the first telescopic rod 612 and the second telescopic rod 614 begin to expand outward, respectively generating an outward driving force on the bottom plate 63 and the top plate 61, and then the bottom plate 63 and the top plate 61 are firmly squeezed on the inner surface of the tank body 1 by the driving force, thereby completing the extrusion and fixation of the tank body 1, and by setting the bottom plate 63 and the top plate 61 to be aligned with The inner wall of the tank body 1 has the same curvature, so that the outer surfaces of the bottom plate 63 and the top plate 61 are firmly attached to the inner surface of the tank body 1. In the process of expanding the tank body 1, the possibility of deformation of the tank body 1 can be greatly reduced. At the same time, through the cooperation of the corrugated bag 610 and the telescopic rod, the inner wall of the tank body 1 is elastically supported. The elastic support can evenly distribute the force on the inner wall of the tank body 1, reduce stress concentration points, and thus reduce the risk of cracks and fractures in the tank body 1. At the same time, the elastic support helps to maintain the original shape and size of the tank body 1, ensure its normal operation, and avoid direct rigid support force to cause greater damage to the tank body 1 under high negative pressure. The tank body 1 will generate noise and vibration due to changes in external pressure under negative pressure. The elastic support can absorb and reduce these vibrations and reduce the noise level. The tank body 1 will experience temperature changes during pouring during operation. The elastic support can adapt to this thermal expansion and contraction to prevent the additional stress caused by temperature changes from damaging the tank body 1.

[0029] The third embodiment: Figures 1 to 9 As shown, the sealing mechanism 7 includes a positioning ring 71, the side surface of the positioning ring 71 is fixedly connected to the inner surface of the vacuum tube 5, the outer surface of the positioning ring 71 is slidably connected with an extrusion rod 72 through a spring, six extrusion rods 72 are arranged at fixed intervals around the central axis of the positioning ring 71, and the end of the extrusion rod 72 away from the positioning ring 71 is fixedly connected to a telescopic disk 73.

[0030] An exhaust pipe 74 is fixedly connected to the middle of the telescopic disk 73, a driving ring 75 is fixedly connected to the inner surface of the telescopic disk 73, a plug-in ring 76 is slidably inserted into the end of the driving ring 75 away from the telescopic disk 73, the outer surface of the plug-in ring 76 is fixedly connected to the inner surface of the positioning ring 71, a pressure ring 77 is fixedly connected to the inside of the plug-in ring 76, and a rubber ring 78 is fixedly connected to the surface of the pressure ring 77 on one side close to the driving ring 75, and the rubber ring 78 and the driving ring 75 are arranged on the same central axis.

[0031] The cross section of the rubber ring 78 is set to be rectangular, the interior of the rubber ring 78 is set to be hollow, the interior of the rubber ring 78 is symmetrically fixedly connected with a folding ring 79, the cross section of the folding ring 79 is set to be triangular, and the inner surface of the folding ring 79 is fixedly connected with a reinforcing ring 710, and the cross section of the reinforcing ring 710 is circular.

[0032] During operation, when the tank body 1 is gradually evacuated to a vacuum through the exhaust pipe 74 on the vacuum pipe 5, the telescopic disk 73 will gradually approach the positioning ring 71 under the action of negative pressure, so that the driving ring 75 moves into the plug ring 76, and finally makes the driving ring 75 contact the outer surface of the rubber ring 78, and as the moving distance of the driving ring 75 increases, the extrusion force between the driving ring 75 and the rubber ring 78 gradually increases, and then the sealing effect is automatically enhanced through the negative pressure state of the vacuum tank, and when the driving ring 75 squeezes the rubber ring 78, it also squeezes the folding ring 79 inside the rubber ring 78, so that the folding ring 79 begins to shrink, and then the thickness of the rubber ring 78 is continuously compressed, thereby greatly enhancing the contact area between the driving ring 75 and the rubber ring 78, further improving the sealing effect, and the folding ring 79 itself has a certain elastic force, so it will produce a reverse squeezing force on the driving ring 75, so that the fit between the driving ring 75 and the rubber ring 78 is tighter, and the sealing effect is further improved. At the same time, by arranging a reinforcing ring 710 on the inner surface of the folding plate, the reinforcing ring 710 can suppress the bending amplitude of the folding plate, thereby protecting the folding plate and preventing the folding plate from excessive deformation, resulting in a decrease in supporting capacity and affecting the sealing effect. At the same time, since the negative pressure seal does not require additional mechanical parts, the need for maintenance and repair is reduced, the maintenance cost is reduced, and there is no complicated sealing system, which reduces the risk of wear and failure and improves the durability of the entire vacuum tank. In addition, the status of the negative pressure sealing system is usually easier to monitor, and they are directly related to the pressure in the tank, which is convenient for timely detection and handling of problems.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A vacuum casting tank for casting a dry-type transformer, comprising a tank body (1), characterized in that: The top of the tank body (1) is fixedly provided with a pouring port (2), the outer surfaces of both sides of the tank body (1) are symmetrically fixedly connected with mounting frames (3), the side surface of the tank body (1) is fixedly provided with a vacuum gauge (4), the outer surface of the tank body (1) on the side close to the vacuum gauge (4) is penetrated and fixedly connected with a vacuum tube (5), and the vacuum tube (5) is arranged on the inner side of the mounting frame (3), and further comprises: A support mechanism (6), the support mechanism (6) being fixedly mounted inside the tank body (1), the support mechanism (6) being arranged directly below the pouring port (2), and the support mechanism (6) being used to support the inner wall of the tank body (1); A sealing mechanism (7), the sealing mechanism (7) being fixedly mounted in the vacuum tube (5), the sealing mechanism (7) being used to seal when evacuating the tank body (1); The support mechanism (6) comprises a top plate (61), the top plate (61) being arranged in an arc shape, the outer surface of the top plate (61) being fixedly fitted and connected to the inner upper surface of the tank body (1), the outer surface of the top plate (61) being provided with a matching groove (62) penetrating therethrough, the matching groove (62) being arranged directly below the pouring port (2), a bottom plate (63) being arranged below the top plate (61), the bottom plate (63) also being arranged in an arc shape, the lower surface of the bottom plate (63) being fixedly fitted and connected to the inner lower surface of the tank body (1), the bottom plate (63) being arranged in the same size as the top plate (61), and the bottom plate (63) and the top plate (61) being arranged symmetrically inside the tank body (1).

2. The vacuum pouring tank for pouring a dry-type transformer according to claim 1, characterized in that: A stabilizing plate (64) is arranged above the bottom plate (63), and the stabilizing plate (64) is arranged in a semicircular ring shape. Two stabilizing plates (64) are symmetrically arranged in the tank body (1), and mounting rods (65) are symmetrically passed through and fixedly connected at both ends of the stabilizing plates (64). The mounting rods (65) fixedly connect the two stabilizing plates (64), and the two ends of the mounting rods (65) are respectively fixedly connected to the inner surface of the tank body (1) away from the bottom plate (63) and the top plate (61).

3. The vacuum pouring tank for pouring a dry-type transformer according to claim 2, characterized in that: An auxiliary plate (66) is provided between the stabilizing plates (64), the auxiliary plate (66) being arranged in an arc shape, two groups of the auxiliary plates (66) being symmetrically arranged in the tank body (1), three of the auxiliary plates (66) being arranged in one group, the arc of the auxiliary plate (66) being arranged to be consistent with the arc of the stabilizing plate (64), one end of the auxiliary plate (66) being fixedly sleeved on the middle outer surface of the mounting rod (65), the other end of the auxiliary plate (66) passing through and being fixedly connected to a limiting rod (67), and the two ends of the limiting rod (67) respectively passing through and being fixedly connected to the outer surfaces of the two stabilizing plates (64).

4. The vacuum pouring tank for pouring a dry-type transformer according to claim 3, characterized in that: One end of the auxiliary plate (66) close to the mounting rod (65) is fixedly connected to a casting frame (68), the cross section of the casting frame (68) is arranged to be nearly U-shaped, a connecting plate (69) is arranged below the casting frame (68), the connecting plate (69) is arranged to be disc-shaped, two connecting plates (69) are arranged, the two connecting plates (69) are symmetrically fixedly connected to the bottom inner surfaces of the two stabilizing plates (64), and a corrugated bag (610) is fixedly installed between the two connecting plates (69).

5. The vacuum pouring tank for pouring a dry-type transformer according to claim 4, characterized in that: A mounting plate (611) is symmetrically fixedly connected to the bottom surface of the stabilizing plate (64); the mounting plate (611) is arranged in a strip shape; a first telescopic rod (612) is fixedly mounted on the outer surface of the mounting plate (611); five of the first telescopic rods (612) are arranged in a group; the first telescopic rods (612) are symmetrically arranged in two groups; one end of the two groups of the first telescopic rods (612) away from the mounting plate (611) is symmetrically fixedly connected to two sides of the upper surface of the bottom plate (63); and the internal cavity of the first telescopic rod (612) is in communication with the bellows (610).

6. The vacuum pouring tank for pouring a dry-type transformer according to claim 5, characterized in that: A support plate (613) is fixedly connected to the outer surface of one end of the auxiliary plate (66) close to the mounting rod (65); two support plates (613) are symmetrically arranged in the tank body (1); the support plates (613) are arranged in an arc shape; the top of the support plate (613) is arranged on the inner side of the top plate (61); a second telescopic rod (614) is fixedly connected to the outer surface of the top of the support plate (613); three second telescopic rods (614) are arranged in a group; two groups of the second telescopic rods (614) are symmetrically arranged in the tank body (1); one end of the second telescopic rod (614) away from the support plate (613) is fixedly connected to the inner surface of the top plate (61); the internal cavity of the second telescopic rod (614) is communicated with the corrugated bag (610).

7. The vacuum pouring tank for pouring a dry-type transformer according to claim 6, characterized in that: The sealing mechanism (7) comprises a positioning ring (71), the side surface of the positioning ring (71) being fixedly connected to the inner surface of the vacuum tube (5), the outer surface of the positioning ring (71) being slidably connected to an extrusion rod (72) penetrating through a spring, six extrusion rods (72) being arranged at fixed intervals around the central axis of the positioning ring (71), and one end of the extrusion rod (72) away from the positioning ring (71) being fixedly connected to a telescopic disk (73).

8. The vacuum pouring tank for pouring a dry-type transformer according to claim 7, characterized in that: An exhaust pipe (74) is fixedly connected to the middle of the telescopic disk (73), a driving ring (75) is fixedly connected to the inner surface of the telescopic disk (73), a plug-in ring (76) is slidably plugged into the end of the driving ring (75) away from the telescopic disk (73), the outer surface of the plug-in ring (76) is fixedly connected to the inner surface of the positioning ring (71), a pressure ring (77) is fixedly connected to the inside of the plug-in ring (76), and a rubber ring (78) is fixedly connected to the surface of the pressure ring (77) on one side close to the driving ring (75), and the rubber ring (78) and the driving ring (75) are arranged on the same central axis.

9. The vacuum pouring tank for pouring a dry-type transformer according to claim 8, characterized in that: The cross section of the rubber ring (78) is arranged to be rectangular, the interior of the rubber ring (78) is arranged to be hollow, a folding ring (79) is symmetrically fixedly connected to the interior of the rubber ring (78), the cross section of the folding ring (79) is arranged to be triangular, a reinforcing ring (710) is fixedly connected to the inner surface of the folding ring (79), and the cross section of the reinforcing ring (710) is circular.

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