Amorphous alloy transformer

Abstract

The present application belongs to the technical field of transformer, and discloses an amorphous alloy transformer, which comprises a shell and a core module. The shell is provided with a containing cavity; the core module is located in the containing cavity and comprises an amorphous alloy core and a first frame. The top end of the amorphous alloy core is fixedly connected to the first frame, and the first frame is fixedly connected to the inner side wall of the shell. The amorphous alloy core is spaced apart from the inner wall of the shell, so that the force generated by the gravity of the amorphous alloy core is transmitted to the inner side wall of the shell through the first frame, thereby sharing the gravity borne by the first frame with the inner side wall of the shell, preventing the first frame from being deformed due to excessive gravity, and ensuring that the amorphous alloy core will not be extruded and deformed. Meanwhile, when the amorphous alloy transformer is running, the noise emitted by the core module is also transmitted to the inner side wall of the shell through the first frame, thereby reducing the noise emitted by the amorphous alloy transformer when running.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and more particularly to an amorphous alloy transformer. Background Technology

[0002] Amorphous alloy transformers are widely used in power transmission networks due to their low no-load loss. If the amorphous alloy core of an amorphous alloy transformer is compressed, the no-load loss of the transformer will increase, and the noise generated will also increase.

[0003] To address these issues, existing technologies typically suspend the amorphous alloy core from the frame of the amorphous alloy transformer to prevent it from being compressed and deformed. However, when the amorphous alloy core is heavy, the frame is easily deformed by its weight, causing the core to shift and come into contact with other components of the transformer. This results in the core being compressed and deformed, leading to increased noise from the transformer. Summary of the Invention

[0004] The purpose of this invention is to provide an amorphous alloy transformer that can suspend a large weight of amorphous alloy core and reduce the noise emitted during the operation of the amorphous alloy transformer.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] An amorphous alloy transformer is provided, comprising:

[0007] The housing has a receiving cavity inside;

[0008] The core module is located inside the receiving cavity. The core module includes an amorphous alloy core and a first frame. The top end of the amorphous alloy core is fixedly connected to the first frame, and the first frame is fixedly connected to the inner wall of the housing. The amorphous alloy core and the inner wall of the housing are spaced apart.

[0009] Preferably, the housing includes a first housing and a second housing, the second housing is disposed on the top of the first housing, the first frame is fixedly connected to the inner sidewall of the first housing, and the first housing and the second housing are fastened together to form a receiving cavity.

[0010] Preferably, the core module further includes a coil and a second frame. The coil is wound on the amorphous alloy core. One side of the coil is connected to the first frame and the other side is connected to the second frame. The first frame and the second frame are corresponding and spaced apart. The amorphous alloy core is disposed between the first frame and the second frame and spaced apart from the second frame.

[0011] Preferably, the housing further includes a third housing, which is disposed at the bottom of the first housing. The second housing and the third housing are respectively fastened to the first housing to form a receiving cavity. A first positioning element is disposed on the side of the third housing facing the receiving cavity, and a second positioning element is disposed on the second frame to position and cooperate with the first positioning element.

[0012] Preferably, a first seal is provided at the connection between the first housing and the second housing; and / or

[0013] A second seal is provided at the connection between the first housing and the third housing.

[0014] Preferably, the first housing includes an inner shell and an outer shell that are nested together in a sealed manner, with a vacuum cavity provided between the inner shell and the outer shell. The receiving cavity is located on the side of the inner shell away from the vacuum cavity, and the first frame is fixedly connected to the inner wall of the inner shell.

[0015] Preferably, the inner wall of the inner shell is provided with a first connector, and the first frame is provided with a second connector, and the first connector and the second connector are detachably connected.

[0016] Preferably, the outer casing is provided with a first through hole communicating with the vacuum chamber, and a vacuum valve is fixed at the first through hole.

[0017] Preferably, the outer casing is also provided with a second through hole that communicates with the vacuum chamber, and a pressure detector is fixed at the second through hole. The pressure detector can detect the pressure inside the vacuum chamber.

[0018] Preferably, the first housing further includes a sound insulation layer disposed within the vacuum cavity, and the sound insulation layer is fixedly connected to one of the inner housing or the outer housing.

[0019] The beneficial effects of this invention are:

[0020] The amorphous alloy transformer provided by this invention fixes the top of the amorphous alloy core to a first frame, and the first frame is fixedly connected to the inner wall of the housing. The amorphous alloy core and the inner wall of the housing are spaced apart, so that the force generated by the gravity of the amorphous alloy core is transmitted to the inner wall of the housing through the first frame. This allows the inner wall of the housing to share the weight of the first frame, preventing the first frame from deforming due to excessive gravity. This, in turn, prevents the amorphous alloy core from shifting and contacting other components of the transformer, ultimately ensuring that the amorphous alloy core is not squeezed or deformed. Simultaneously, during operation, the noise emitted by the core module is also transmitted to the inner wall of the housing through the first frame. The inner wall of the housing increases the noise transmission area, thus reducing transmitted sound energy and blocking sound propagation, thereby lowering the noise emitted by the amorphous alloy transformer during operation. Attached Figure Description

[0021] Figure 1 This is an exploded structural diagram of the amorphous alloy transformer provided by the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the amorphous alloy core provided by the present invention;

[0023] Figure 3 This is a cross-sectional view of the first housing in the height direction provided by the present invention.

[0024] In the picture:

[0025] 1. Housing; 11. First housing; 111. Inner housing; 112. Outer housing; 113. Vacuum cavity; 114. First connector; 115. Sound insulation layer; 12. Second housing; 13. Third housing; 131. First positioning component;

[0026] 2. Core module; 21. Amorphous alloy core; 211. Single-frame core; 2111. Core body; 2112. Non-magnetic steel plate shell; 212. Winding section; 22. First frame; 221. Second connector; 23. Coil; 24. Second frame; 241. Second positioning component;

[0027] 31. First seal; 32. Second seal;

[0028] 41. Vacuum valve; 42. Pressure detector. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0033] When the weight of the amorphous alloy core suspended by the frame of an amorphous alloy transformer is too large, the frame is easily deformed by the gravity of the amorphous alloy core. This causes the amorphous alloy core to shift and come into contact with other components of the amorphous alloy transformer, resulting in the amorphous alloy core being squeezed and deformed. Therefore, preventing the deformation of the support frame bearing the amorphous alloy core is the key to solving the above technical problem. The following section will discuss this further. Figures 1 to 3 The amorphous alloy transformer provided by this invention will be described in detail.

[0034] Figure 1 An exploded structural diagram of the amorphous alloy transformer provided in this embodiment is shown. Figure 1 As shown, the amorphous alloy transformer provided in this embodiment includes a housing 1 and a core module 2. The housing 1 has a receiving cavity capable of accommodating the core module 2. The core module 2 is located within the receiving cavity and includes an amorphous alloy core 21 and a first frame 22. The top end of the amorphous alloy core 21 is fixedly connected to the first frame 22, and the first frame 22 is fixedly connected to the inner wall of the housing 1. The amorphous alloy core 21 is spaced apart from the inner wall of the housing 1. It is understood that the inner wall of the housing 1 includes an inner top wall, inner side walls, and an inner bottom wall. The amorphous alloy core 21 does not contact the inner wall, thus avoiding interaction forces between the amorphous alloy core 21 and the inner wall of the housing 1, and preventing the amorphous alloy core 21 from being squeezed and deformed.

[0035] The amorphous alloy transformer provided in this embodiment fixes the top of the amorphous alloy core 21 to the first frame 22, and fixes the first frame 22 to the inner wall of the housing 1. The amorphous alloy core 21 and the inner wall of the housing 1 are spaced apart, so that the force generated by the gravity of the amorphous alloy core 21 is transmitted to the inner wall of the housing 1 through the first frame 22. Thus, the inner wall of the housing 1 shares the weight borne by the first frame 22, preventing the first frame 22 from deforming due to excessive gravity, and preventing the amorphous alloy core 21 from displacing and contacting other components of the amorphous alloy transformer. Ultimately, it ensures that the amorphous alloy core 21 will not be squeezed and deformed. At the same time, when the amorphous alloy transformer is running, the noise emitted by the core module 2 is also transmitted to the inner wall of the housing 1 through the first frame 22. The inner wall of the housing 1 increases the noise transmission area, thus weakening the transmitted sound energy and blocking the transmission of noise, thereby reducing the noise emitted by the amorphous alloy transformer during operation.

[0036] Continue as Figure 1 As shown, the housing 1 includes a first housing 11 and a second housing 12. The second housing 12 is disposed on the top of the first housing 11. The first frame 22 is fixedly connected to the inner wall of the first housing 11. The amorphous alloy core 21 is spaced apart from the inner wall of the first housing 11 and the inner wall of the second housing 12. The first housing 11 and the second housing 12 are fastened together to form a receiving cavity. Thus, when the amorphous alloy core 21 is installed into the receiving cavity, the amorphous alloy core 21 can be hoisted and sent into the receiving cavity from top to bottom, thereby reducing the assembly difficulty of the amorphous alloy transformer and improving the assembly efficiency of the amorphous alloy transformer.

[0037] Figure 2 A schematic diagram of the amorphous alloy core provided in this embodiment is shown. The amorphous alloy core 21 has relatively poor strength; it is susceptible to deformation if it comes into contact with other components of the amorphous alloy transformer and a relative force is generated. To solve the above-mentioned technical problems, such as... Figures 1 to 2As shown, the core module 2 also includes a coil 23 and a second frame 24. The coil 23 is wound around the amorphous alloy core 21. One side of the coil 23 is connected to the first frame 22, and the other side is connected to the second frame 24. The first frame 22 and the second frame 24 are corresponding and spaced apart. The amorphous alloy core 21 is disposed between the first frame 22 and the second frame 24 and spaced apart from the second frame 24. The first frame 22 serves as a protective shell to prevent the top of the amorphous alloy core 21 from contacting other components of the amorphous alloy transformer and generating relative forces. Similarly, the second frame 24 also serves as a protective shell to prevent the bottom of the amorphous alloy core 21 from contacting other components of the amorphous alloy transformer and generating relative forces. At the same time, the second frame 24 is spaced apart from the amorphous alloy core 21 and does not contact it. This also prevents the amorphous alloy core 21 from contacting the second frame 24 and generating relative forces. The first frame 22 and the second frame 24 are fixedly connected to the coil 23, which is wound around the amorphous alloy core 21. The coil 23 acts as a protective shell, preventing the side surface of the amorphous alloy core 21 from contacting other components of the amorphous alloy transformer and generating relative forces. By setting the first frame 22 and the second frame 24 and connecting one side of the coil 23 to the first frame 22 and the other side to the second frame 24, a protective shell can be obtained to prevent the amorphous alloy core 21 from contacting other components of the amorphous alloy transformer and generating relative forces. This prevents the amorphous core 21 from deforming and reduces the noise emitted by the core module 2 during the operation of the amorphous alloy transformer.

[0038] It is worth noting that the amorphous alloy core 21 is formed by three single-frame cores 211. The contact parts of two adjacent single-frame cores 211 are spliced ​​together to form a winding section 212. The amorphous alloy core 21 has three winding sections 212, and each winding section 212 is wound with a coil 23. Therefore, the coil 23 can act as a protective shell 112 to prevent the winding section 212 from directly contacting other components of the amorphous alloy transformer and thus deforming. The single-frame core 211 also includes a core body 2111 and a non-magnetic steel plate shell 2112. The core body 2111 is wrapped with the non-magnetic steel plate shell 2112. The top of the non-magnetic steel plate shell 2112 is fixed to the first frame 22. The first frame 22 is fixedly connected to the inner wall of the first housing 11, and its bottom end is spaced apart from the second frame 24. This allows the amorphous alloy core 21 to be suspended between the amorphous alloy core 21 and the second frame 24. The noise of the amorphous alloy core 21 cannot be transmitted through the second frame 24, but is conducted to the inner wall of the first housing 11 through the first frame 22. The inner wall of the first housing 11 increases the noise conduction area, thus weakening the transmitted sound energy and blocking the conduction of noise, thereby reducing the noise emitted by the amorphous alloy transformer during operation.

[0039] like Figure 1As shown, the housing 1 also includes a third housing 13, which is disposed at the bottom of the first housing 11. The second housing 12 and the third housing 13 are fastened to the first housing 11 to form a receiving cavity. The amorphous alloy core 21 is spaced apart from the inner wall of the first housing 11, the inner wall of the second housing 12, and the inner wall of the third housing 13. Thus, when assembling the amorphous alloy core 21, the first housing 11 can be hoisted from top to bottom to fit the amorphous alloy core 21 into the receiving cavity, further reducing the assembly difficulty of the amorphous alloy transformer.

[0040] Optionally, the third housing 13 is provided with a first positioning element 131 on the side facing the receiving cavity, and the second frame 24 is provided with a second positioning element 241 that positions and cooperates with the first positioning element 131. This prevents the amorphous alloy core 21 from shaking during the transportation of the amorphous alloy transformer, even if bumps or vibrations occur. Shaking of the amorphous alloy core 21 would inevitably increase the force borne by the first frame 22. The above-mentioned arrangement also further prevents the first frame 22 from deforming during the transportation of the amorphous alloy transformer, thereby reducing the difficulty of transporting the amorphous alloy transformer. Specifically, one of the first positioning element 131 and the second positioning element 241 is a positioning pin, and the other is a positioning hole, which can fix the spatial position of the amorphous alloy core 21 in the horizontal direction, preventing it from shaking due to bumps during transportation. Specifically, one of the first positioning component 131 and the second positioning component 241 is a positioning pin and the other is a positioning hole. When the core module 2 is fixed on the inner wall of the first housing 11, the positioning pin and the positioning hole are positioned and engaged to prevent the core module 2 from shaking due to bumps during transportation. It is worth noting that any positioning component that prevents the amorphous alloy transformer from shaking due to bumps during transportation is within the protection scope of this embodiment, and will not be described in detail here.

[0041] Continue as Figure 1As shown, a first seal 31 is provided at the connection between the first housing 11 and the second housing 12. This seal prevents noise emitted by the amorphous alloy core 21 from being conducted from the first frame 22 to the first housing 11 during operation of the amorphous alloy transformer, thus preventing the noise from leaking out from the second housing 12 and ensuring that the noise is conducted only on the first housing 11. Similarly, a second seal 32 is provided at the connection between the first housing 11 and the third housing 13. This seal prevents noise emitted by the amorphous alloy core 21 from being conducted from the first frame 22 to the first housing 11 during operation of the amorphous alloy transformer, thus preventing the noise from leaking out from the third housing 13 and ensuring that the noise is conducted only on the first housing 11. This reduces the noise emitted by the amorphous alloy transformer during operation. Specifically, the first sealing element 31 and the second sealing element 32 can be sealing strips or sealing rings. All sealing methods that can achieve sealing of the accommodating cavity are within the protection scope of this embodiment. A first receiving groove for accommodating the first sealing element 31 is provided at one end of the connection between the first housing 11 and the second housing 12. The first sealing element 31 is disposed in the first receiving groove and can prevent noise from being transmitted to the second housing 12 and leaking out from the second housing 12. A second receiving groove for accommodating the second sealing element 32 is provided at one end of the connection between the first housing 11 and the third housing 13. The second sealing element 32 is disposed in the second receiving groove and can prevent noise from being transmitted to the third housing 13 and leaking out from the third housing 13.

[0042] It is worth noting that the second sealing element 32 in the amorphous alloy transformer provided by the present invention has a certain thickness. By adjusting the thickness of the second sealing element 32, the distance between the side of the second frame 24 of the core module 2 and the third housing 13 can be adjusted, so that the second frame 24 is in contact with the third housing 13 without being subjected to force. Thus, during the transportation of the amorphous alloy transformer, the vibration of the core module 2 in the height direction can be prevented, ensuring that the core module 2 will not be displaced in the height direction. This prevents the amorphous alloy core 21 from bouncing up and down, reducing the impact of vibration on the performance of the amorphous alloy core 21 during transportation.

[0043] Figure 3 A cross-sectional view of the first housing 11 in the height direction provided in the embodiment is shown. Although placing the core module 2 inside the receiving cavity of the housing 1 can block the noise emitted by the core module 2 to some extent, the noise emitted by the amorphous alloy transformer is still quite high. To further reduce the noise emitted by the amorphous alloy core 21, such as... Figure 1 and Figure 3As shown, the first housing 11 includes an inner housing 111 and an outer housing 112 that are nested together with inner and outer seals. A vacuum cavity 113 is provided between the inner housing 111 and the outer housing 112. The cavity is located on the side of the inner housing 111 away from the vacuum cavity 113. The first frame 22 is fixedly connected to the inner wall of the inner housing 111. By utilizing the property that sound cannot propagate in a vacuum, noise transmitted to the inner wall of the first housing 11 via the first frame 22 is transmitted to the outer housing 112. When the noise is transmitted to the outer housing 112, the vacuum cavity 113 isolates the noise emitted by the core module 2. The noise transmitted to the first housing 11 or the second housing 12 is isolated by the seal to prevent the noise from leaking out from the first housing 11 or the second housing 12, thereby greatly reducing the noise emitted by the amorphous alloy transformer during operation.

[0044] Optionally, the first housing 11 further includes a sound insulation layer 115, which is disposed within the vacuum cavity 113 and fixedly connected to either the inner housing 111 or the outer housing 112, thereby further improving the sound insulation effect of the first housing 11. It is worth noting that the sound insulation layer 115 can be any sound-absorbing material capable of absorbing noise and reducing the reflection and propagation of sound waves, such as sound-absorbing cotton, rock wool board, or polyester fiber board; these will not be elaborated upon here. The vacuum cavity 113 is not completely filled with the sound insulation layer 115. When the sound insulation layer 115 is fixedly connected to the inner housing 111, it is spaced apart from the outer housing 112. This allows noise transmitted to the inner wall of the inner housing 111 to be partially absorbed by the sound insulation layer 115 and its reflection and propagation reduced before being isolated by the vacuum cavity 113. When the sound insulation layer 115 is fixedly connected to the outer shell 112, the sound insulation layer 115 is spaced apart from the inner shell 111, so that when the noise transmitted to the inner wall of the inner shell 111 is transmitted to the outer shell 112, it can be isolated by the vacuum cavity 113 first. When the vacuum degree in the vacuum cavity 113 is insufficient and there is air that can transmit a small amount of noise, the sound insulation layer 115 can also absorb some noise and reduce the reflection and propagation of sound waves.

[0045] Continue as Figure 1 and Figure 3As shown, the inner wall of the inner shell 111 is provided with a first connector 114, and the first frame 22 is provided with a second connector 221. The first connector 114 and the second connector 221 are detachably connected, thereby reliably fixing the amorphous alloy core 21 to the inner wall of the inner shell 111. When the amorphous alloy core 21 is damaged, it can be replaced through the detachably connected first connector 114 and second connector 221, thus improving the maintainability of the amorphous alloy transformer. Specifically, one of the first connector 114 and the second connector 221 can be a fixing plate with a threaded hole, and the other can be a fixing plate with a connecting through hole. The two fixing plates are bolted together. Of course, in other embodiments, other first connectors 114 and second connectors 221 that can achieve detachable connection are also within the scope of protection of this embodiment, and will not be described in detail here.

[0046] Continue as Figure 1 and Figure 2 As shown, the outer casing 112 is provided with a first through hole communicating with the vacuum chamber 113. A vacuum valve 41 is fixed at the first through hole, so that when the vacuum chamber 113 leaks and air enters, the vacuum valve 41 can be used to re-evacuate the vacuum chamber 113, thereby enabling the vacuum chamber 113 to better isolate the transmission of noise and improve the sound insulation effect of the vacuum chamber 113.

[0047] Furthermore, the outer casing 112 is also provided with a second through hole communicating with the vacuum chamber 113. A pressure detector 42 is fixed at the second through hole. The detection end of the pressure detector 42 extends into the vacuum chamber 113 and can detect the pressure inside the vacuum chamber 113. The display end of the pressure detector 42 is located on the side of the outer casing 112 away from the vacuum chamber 113 and can display the atmospheric pressure inside the vacuum chamber 113 for the staff to view. When the staff observes the display end of the pressure detector 42 and finds that the vacuum chamber 113 is leaking, the vacuum valve 41 can be used to re-evacuate the vacuum chamber 113 in time to maintain the sound insulation effect of the vacuum chamber 113.

[0048] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An amorphous alloy transformer characterized by, The utility model relates to a kind of amorphous core module and vacuum core, including: Shell (1), which is provided with a containing cavity inside; Iron core module (2) is located in the containing cavity, and the iron core module (2) includes amorphous alloy core (21) and first frame (22), the top of the amorphous alloy core (21) is fixedly connected to the first frame (22), and the first frame (22) is fixedly connected to the inner side wall of the shell (1), and the amorphous alloy core (21) is spaced apart from the inner wall of the shell (1). The shell (1) includes a first shell (11) and a second shell (12), the second shell (12) is arranged on the top of the first shell (11), the first frame (22) is fixedly connected to the inner side wall of the first shell (11), and the first shell (11) and the second shell (12) are buckled to form the containing cavity. The iron core module (2) further includes a coil (23) and a second frame (24), the coil (23) is wound around the amorphous alloy core (21), one side of the coil (23) is connected to the first frame (22), the other side is connected to the second frame (24), the first frame (22) and the second frame (24) are correspondingly and spaced apart, and the amorphous alloy core (21) is arranged between the first frame (22) and the second frame (24) and spaced apart from the second frame (24). The shell (1) further includes a third shell (13), the third shell (13) is arranged at the bottom of the first shell (11), the second shell (12) and the third shell (13) are buckled with the first shell (11) respectively to form the containing cavity together, and the third shell (13) is provided with a first positioning member (131) on the side facing the containing cavity, and the second frame (24) is provided with a second positioning member (241) positioned and matched with the first positioning member (131). The first shell (11) includes an inner shell (111) and an outer shell (112) arranged in a nested manner inside and outside, a vacuum cavity (113) is arranged between the inner shell (111) and the outer shell (112), the containing cavity is located on the side of the inner shell (111) away from the vacuum cavity (113), and the first frame (22) is fixedly connected to the inner side wall of the inner shell (111). The inner side wall of the inner shell (111) is provided with a first connecting member (114), the first frame (22) is provided with a second connecting member (221), and the first connecting member (114) and the second connecting member (221) are detachably connected.

2. The amorphous alloy transformer of claim 1, wherein, The connecting part between the first shell (11) and the second shell (12) is provided with a first sealing member (31); and / or The connecting part between the first shell (11) and the third shell (13) is provided with a second sealing member (32).

3. The amorphous alloy transformer of claim 1, wherein, The outer shell (112) is provided with a first through hole communicated with the vacuum cavity (113), and a vacuum valve (41) is fixed at the first through hole.

4. The amorphous alloy transformer of claim 1, wherein, A second through hole in communication with the vacuum cavity (113) is further arranged on the shell (112), and an air pressure detector (42) is fixed at the second through hole, and the air pressure detector (42) can detect the pressure in the vacuum cavity (113).

5. The amorphous alloy transformer of claim 1, wherein, The first shell (11) further comprises a sound insulation layer (115), the sound insulation layer (115) is arranged in the vacuum cavity (113), and the sound insulation layer (115) is fixedly connected to one of the inner shell (111) or the shell (112).

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