Heat dissipation device and transformation system
By designing heat dissipation devices for the casing, bearing base, and cooling components, the problems of poor waterproof performance and heat dissipation of transformers were solved, achieving effective heat dissipation and waterproof protection for transformers, reducing the risk of water damage, and expanding application scenarios.
Patent Information
- Application Number
- CN202423086483.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing transformers have poor waterproofing and heat dissipation performance, making them vulnerable to damage from flooding. In particular, dry-type transformers with three-dimensional wound cores are prone to burning out when submerged in water, leading to power outages and economic losses.
Design a heat dissipation device including a housing, a support base, and a cooling component. The housing defines a sealed cavity to protect the transformer, and the cooling component surrounds the housing for heat dissipation. At the same time, a preset interval and isolation beam are set to prevent water immersion. The inner and outer cylinder structure is used to improve heat dissipation efficiency and waterproof performance.
It achieves effective heat dissipation and waterproof protection for transformers, reduces the risk of damage to transformers from water flooding, ensures their safe operation underwater or in confined environments, and improves market competitiveness.
Smart Images
Figure CN223582782U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of transformer sealing and cooling, and in particular to a heat dissipation device and a transformer system. BACKGROUND
[0002] With the frequent occurrence of typhoons, heavy rains and other severe weather, waterlogging disasters are becoming more and more frequent. The sealing protection of transformers, especially three-dimensional wound core dry-type transformers, is becoming more and more important. Otherwise, waterlogging caused by typhoons, heavy rains and the like is easy to cause the transformer to be affected by water immersion and burn out, resulting in power interruption, and it is difficult to replace quickly, which is easy to cause huge economic losses.
[0003] However, the waterproof performance and heat dissipation effect of the transformer in the related art are poor, and it is difficult to resist the damage caused by waterlogging. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a heat dissipation device and a transformer system in view of the poor waterproof performance and heat dissipation effect of the transformer in the related art, and the difficulty in resisting the damage caused by waterlogging.
[0005] According to one aspect of the present application, a heat dissipation device is provided, which comprises:
[0006] a housing defining a sealed cavity;
[0007] a bearing seat arranged in the sealed cavity and used for bearing a transformer, a side of the bearing seat away from the transformer having a preset interval with an inner wall of the sealed cavity; and
[0008] a cooling assembly arranged around the housing.
[0009] In one embodiment, the housing comprises an inner cylinder, an outer cylinder and two sealing plates, the two sealing plates being arranged at two ends of the inner cylinder along an extension direction of the inner cylinder and defining the sealed cavity together with the inner cylinder;
[0010] the outer cylinder being arranged around the outer side of the inner cylinder to define a heat dissipation cavity with the inner cylinder, and part of the cooling assembly being arranged in the heat dissipation cavity.
[0011] In one embodiment, the cooling assembly comprises a cooling pipe and a heat dissipation assembly, the cooling pipe being arranged in the heat dissipation cavity and around the inner cylinder along an axis parallel to the extension direction of the inner cylinder;
[0012] the heat dissipation assembly being arranged outside the housing and having a cooling liquid channel;
[0013] The outer cylinder is provided with an inlet and an outlet, the first end of the cooling pipe passes through the inlet and communicates with one end of the cooling liquid channel, and the second end of the cooling pipe passes through the outlet and communicates with the other end of the cooling liquid channel.
[0014] In one of the embodiments, the heat dissipation assembly comprises a circulating pipe and a heat sink, and the cooling liquid channel is formed in the circulating pipe.
[0015] The heat sink is arranged on one side of the circulating pipe and used for dissipating heat from the cooling liquid flowing through the cooling liquid channel.
[0016] In one of the embodiments, the bearing seat is arranged on the inner wall of the inner cylinder and has the preset interval with the inner wall of the inner cylinder.
[0017] In one of the embodiments, the heat dissipation device further comprises a plurality of heat dissipation fins, the heat dissipation fins are arranged on the inner wall of the inner cylinder and are arranged at equal intervals around an axis parallel to the extending direction of the inner cylinder.
[0018] In one of the embodiments, the sealing plate is provided with a plurality of wire passing holes, and the wire passing holes are provided with sealing members.
[0019] In one of the embodiments, the heat dissipation device further comprises a base, and the base is arranged on the outer side wall of the shell.
[0020] According to another aspect of the present application, a transformer system is provided, comprising a transformer and the heat dissipation device according to any one of the above embodiments, and the transformer is arranged in the heat dissipation device.
[0021] In one of the embodiments, the transformer comprises a base, a transformer body and an isolation beam, the base is used for bearing the transformer body, and the isolation beam is arranged on the side of the base away from the transformer body.
[0022] The heat dissipation device is used for dissipating heat from the transformer and has a certain waterproof property, and can resist damage caused by waterlogging. The shell defines a sealed cavity with sealing property, and the transformer in the sealed cavity is preliminarily waterproofed. In addition, the cooling assembly is arranged around the side of the shell, so that the temperature rise in the sealed cavity caused by the operation of the transformer is dissipated and cooled, and the transformer in the sealed cavity is at normal temperature and works normally. The preset interval between the bearing seat and the inner wall of the sealed cavity is located on the side of the bearing seat away from the transformer, and it can be understood that if water flows into the sealed cavity, it will first flow to the preset interval, thereby reducing the risk of water soaking and damaging the transformer. Thus, the transformer is further waterproofed. That is, the heat dissipation device of the present application can dissipate heat from the transformer and waterproof the transformer, and can reduce the risk of damage to the transformer caused by waterlogging. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the heat dissipation device in one embodiment of this application.
[0024] Figure 2 This is a schematic diagram of the structure of a transformer housed in a heat dissipation device in one embodiment of this application.
[0025] Figure 3 This is a schematic diagram of a heat dissipation device with heat dissipation fins in one embodiment of this application.
[0026] Figure 4 This is a schematic diagram of the transformer structure in one embodiment of this application.
[0027] Explanation of icon numbers:
[0028] 10. Heat dissipation device;
[0029] 100. Shell; 110. Sealed cavity; 120. Inner cylinder; 121. Heat dissipation fins; 130. Outer cylinder; 131. Inlet; 132. Outlet; 140. Heat dissipation cavity; 150. Sealing plate; 151. Wiring hole;
[0030] 200. Support seat; 210. Preset interval;
[0031] 300. Cooling assembly; 310. Cooling pipe; 320. Heat dissipation assembly;
[0032] 400. Transformer; 410. Base; 420. Transformer body; 421. Three-dimensional wound core; 422. Coil; 423. Clamping structure; 424. Lead wire; 430. Isolation beam;
[0033] 500. Base. Detailed Implementation
[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0035] In the description of the application, it should be understood that, if there are these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.
[0036] In addition, if there are these terms "first", "second", these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.
[0037] In this application, unless otherwise explicitly specified and limited, if there are terms such as "mounting", "connecting", "connecting", "fixing" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0038] In this application, unless otherwise explicitly specified and limited, if there are similar descriptions such as "first feature on or under second feature", the meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0039] It is to be noted that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is to be understood that when a layer is referred to as being "connected", "coupled", or "adjacent" to another element, it can be directly connected, coupled, or adjacent to the other element, or intervening elements can also be present. As used herein, the term "vertical", "horizontal", "upper", "lower", "left", "right", and the like, are merely used for the purpose of illustration and do not indicate an absolute orientation.
[0040] The three-dimensional wound core dry-type transformer has the advantages of high efficiency, energy saving, safety and reliability, can overcome the problems of oil seepage, oil leakage and rusting of oil-immersed transformers, reduce the daily maintenance of the transformer, and prevent combustion or explosion accidents caused by product failure. At present, three-dimensional wound core dry-type transformers with relatively high environmental conditions are generally used in indoor distribution rooms or outdoor pavilion substations.
[0041] However, in recent years, typhoons and heavy rains have caused urban waterlogging to occur more frequently. In addition to flood-prone areas, old urban areas are also severely affected by waterlogging. Three-dimensional wound core dry-type transformers are commonly used in indoor distribution rooms in urban power distribution networks, and indoor distribution rooms are usually located in basements to save space. However, this has another problem. When urban waterlogging occurs, three-dimensional wound core dry-type transformers located in basements are easily affected by water immersion and can be burned, causing power outages and making it difficult to replace them quickly, resulting in significant economic losses. In addition, restoring power supply requires a large amount of manpower and resources, which has a serious impact on the production and life of the people.
[0042] Therefore, a new type of three-dimensional wound core dry-type transformer needs to be developed to expand its application scenarios, so that the three-dimensional wound core dry-type transformer can operate safely underwater, underground, or in a narrow and enclosed environment, further improving the market competitiveness of the three-dimensional wound core dry-type transformer.
[0043] Based on this, the present application provides a heat dissipation device that can dissipate heat from the transformer while having a certain waterproofness to resist damage caused by waterlogging.
[0044] Referring to Figure 1 and Figure 2 , Fig. 1 is a structural schematic diagram of a heat dissipation device 10 in an embodiment of the present application. Figure 1 Fig. 1 is a structural schematic diagram of a heat dissipation device 10 in an embodiment of the present application. Figure 2 Fig. 2 is a structural schematic diagram of a transformer 400 provided in the heat dissipation device 10 in an embodiment of the present application.
[0045] The heat dissipation device 10 provided by the application comprises a shell 100, a bearing seat 200 and a cooling assembly 300. The shell 100 defines a sealed cavity 110 for accommodating a transformer 400, so that the transformer 400 is in a sealed environment, the risk of water entering the transformer 400 is reduced, and air insulation between the shell 100 and the transformer 400 is facilitated. The shell can also prevent wind, rain, dust, external impact and small animals from entering the inside of the transformer. The bearing seat 200 is arranged in the sealed cavity 110 and is used for bearing the transformer 400. A preset interval 210 is formed between the side of the bearing seat 200 away from the transformer 400 and the inner wall of the sealed cavity 110. If water enters the sealed cavity 110, the water flow first flows into the preset interval 210, further reducing the risk of damage to the transformer 400 caused by water immersion. The cooling assembly 300 is arranged on the shell 100 and is used for cooling the sealed cavity 110.
[0046] The heat dissipation device 10 provided by the application is used for dissipating heat of the transformer 400 and has a certain waterproof property and can resist damage caused by waterlogging. It can be understood that the shell 100 defines the sealed cavity 110 with a sealing property, which preliminarily prevents water from entering the transformer 400 in the sealed cavity 110. Meanwhile, the cooling assembly 300 is arranged around the shell 100, so that the temperature rise caused by the operation of the transformer 400 in the sealed cavity 110 is dissipated and cooled, and the transformer 400 in the sealed cavity 110 is in a normal temperature and works normally. The preset interval 210 between the bearing seat 200 and the inner wall of the sealed cavity 110 is located on the side of the bearing seat 200 away from the transformer 400. If water flow enters the sealed cavity 110 by mistake, the water flow first flows into the preset interval 210, reducing the risk of damage to the transformer 400 caused by water immersion. Thus, the transformer 400 is further protected from water. That is, the heat dissipation device 10 provided by the application can dissipate heat of the transformer 400 and protect the transformer 400 from water, reducing the risk of damage to the transformer 400 caused by waterlogging.
[0047] In some embodiments, continuing to refer to Figure 2As shown, the shell 100 comprises an inner cylinder 120, an outer cylinder 130 and two end plates 150. The two end plates 150 are respectively arranged at two ends of the inner cylinder 120 along the extending direction of the inner cylinder 120, and together with the inner cylinder 120 define a sealed cavity 110. The transformer 400 is accommodated between the inner cylinder 120 and the two end plates 150, and is in a sealed state to reduce the risk of water immersion damage. The outer cylinder 130 is arranged outside the inner cylinder 120 to define a heat dissipation cavity 140 with the inner cylinder 120. Part of the cooling assembly 300 is arranged in the heat dissipation cavity 140. That is, the shell 100 has an inner-outer double-layer structure, part of the cooling assembly 300 is arranged between the double-layer structure, and heat is conducted through the inner cylinder 120 to cool the sealed cavity 110. In this way, the materials of the inner cylinder 120 and the outer cylinder 130 can be set, for example, the material of the inner cylinder 120 is a material with good heat conduction, and the material of the outer cylinder 130 is a material with good heat insulation. Thus, the inner cylinder 120 is used to conduct heat to the sealed cavity 110, and the cooling and heat dissipation efficiency is improved. The outer cylinder 130 is used for heat insulation to reduce the loss of temperature of the cooling assembly 300 in the heat dissipation cavity 140, and further improve the efficiency of heat dissipation and cooling.
[0048] In some embodiments, referring back to Figure 2 As shown, the cooling assembly 300 comprises a cooling pipe 310 and a heat dissipation assembly 320. The cooling pipe 310 is arranged in the heat dissipation cavity 140 and surrounds the inner cylinder 120 along an axis parallel to the extending direction of the inner cylinder 120. It can be understood that the cooling pipe 310 circulates cooling liquid, and the cooling liquid flows outside the inner cylinder 120 to provide uniform cooling and heat dissipation for the inner cylinder 120. The cooling pipe 310 can be arranged in multiple turns around the outer side of the inner cylinder 120. In this way, the cooling liquid in the cooling pipe 310 can be fully utilized to cool the heat dissipation cavity 140, and the heat dissipation efficiency is improved.
[0049] The heat dissipation assembly 320 is arranged outside the shell 100 and has a cooling liquid passage. The outer cylinder 130 is provided with an inlet 131 and an outlet 132. The first end of the cooling pipe 310 passes through the inlet 131 and communicates with one end of the cooling liquid passage of the heat dissipation assembly 320. The second end of the cooling pipe 310 passes through the outlet 132 and communicates with the other end of the cooling liquid passage of the heat dissipation assembly 320. The heat dissipation assembly 320 is used to circulate cooling liquid into the cooling pipe 310. It can be understood that the cooling liquid cooled by the heat dissipation assembly 320 flows into the cooling pipe 310 through the inlet 131. The cooling liquid in the cooling pipe 310 exchanges heat with the sealed cavity 110 and then flows into the heat dissipation assembly 320 through the outlet 132 to dissipate heat. Then, the cooling liquid cooled by the heat dissipation assembly 320 again flows into the cooling pipe 310 through the inlet 131, and the cycle is repeated to achieve heat dissipation and cooling of the sealed cavity 110.
[0050] In some embodiments, the heat dissipation assembly 320 includes a circulation pipe and a radiator. A coolant channel is formed inside the circulation pipe, that is, one end of the circulation pipe is connected to the first end of the cooling pipe 310, and the other end of the circulation pipe is connected to the second end of the cooling pipe 310. The radiator is disposed on one side of the circulation pipe for dissipating heat from the coolant flowing through the circulation pipe. The radiator can be a structure such as a fan to cool the coolant flowing through the circulation pipe, thereby allowing the cooled coolant to circulate into the cooling pipe 310, cooling the sealed cavity 110, and thus keeping the transformer 400 inside the sealed cavity 110 at a suitable ambient temperature.
[0051] In some embodiments, such as Figure 2 The support seat 200 is disposed on the inner wall of the inner cylinder 120, and defines the aforementioned preset interval 210 between the support seat 200 and the inner wall of the inner cylinder 120. It can be understood that the inner cylinder 120 is a cylindrical structure, and the support seat 200 can be a plate-like structure. Simply placing the support seat 200 on the inner wall of the inner cylinder 120 defines the preset interval 210. This process is simple, the manufacturing method is concise, and manufacturing costs are reduced. If water accidentally enters the sealed cavity 110, it will first flow into the preset interval 210, reducing the risk of water immersion damaging the transformer 400, thus enhancing the waterproof protection of the transformer 400.
[0052] In some embodiments, the inner wall of the inner cylinder 120 is provided with a stud or other structure, which can be used to fix the support 200 or directly fix the transformer 400. Alternatively, the support 200 or the transformer 400 can be directly welded to the inner wall of the inner cylinder 120 by welding.
[0053] In some embodiments, see Figure 3 As shown, Figure 3 This is a schematic diagram of the structure of the heat dissipation device 10 with heat dissipation fins 121 in one embodiment of this application. The heat dissipation device 10 also includes a plurality of heat dissipation fins 121, which are disposed on the inner wall of the inner cylinder 120 and around an axis parallel to the extension direction of the inner cylinder 120. The plurality of heat dissipation fins 121 are equally spaced on the inner wall of the inner cylinder 120. The addition of heat dissipation fins 121 increases the contact area with the air in the sealed cavity 110, and the heat conduction through the heat dissipation fins 121 improves the heat exchange efficiency for cooling the sealed cavity 110.
[0054] In some embodiments, a fan is provided on the inner wall of the inner cylinder 120 or on the transformer 400. By starting the fan, the flow of hot air in the sealed cavity 110 is accelerated, thereby further improving the heat dissipation efficiency.
[0055] In some embodiments, see Figure 1As shown, the sealing plate 150 is provided with a plurality of wire holes 151 for leading out the lead wires 424 of the transformer 400 in the sealed cavity 110. The wire holes 151 are provided with sealing members, thereby reducing the risk of water entering the sealed cavity 110 from the wire holes 151, improving the sealing degree of the sealed cavity 110, and reducing the risk of water damage to the transformer 400.
[0056] In some embodiments, referring to Figures 1-3 As shown, the heat dissipation device 10 further comprises a base 500 provided on the outer side wall of the shell 100. The base 500 is composed of a channel steel or a bent plate. The base 500 can separate the heat dissipation device 10 from the ground, thereby reducing the immersion erosion of the shell 100 of the heat dissipation device 10 by water, and reducing the risk of water entering the sealed cavity 110. In some embodiments, a connecting structure or a bolt hole can be provided on the base 500, so as to facilitate the installation of the base 500 on other structural components or foundations, and thereby facilitate the installation of the heat dissipation device 10 on other structural components.
[0057] The application further provides a transformer system, which comprises the transformer 400 and the heat dissipation device 10 in any of the above embodiments. The transformer 400 is arranged in the sealed cavity 110, and the transformer 400 is cooled by the heat dissipation device 10 while being in a sealed state, thereby improving the waterproof performance of the transformer 400 and reducing the risk of water damage to the transformer 400.
[0058] The heat dissipation principle of the heat dissipation device 10 for the transformer 400 is as follows. After the transformer 400 is arranged in the heat dissipation device 10, the transformer 400 is equivalent to being placed in a sealed space. When the transformer 400 operates, the volume of the solid core 421 and the coil 422 changes, and the heat enters the air and the shell. Due to the sealing structure of the sealed cavity, the hot air cannot diffuse to the outside, but can only accumulate inside the sealed cavity. Subsequently, the heat dissipation assembly 320 starts to work. Under the action of the heat dissipation assembly 320, the cooling liquid enters the cooling pipe 310 to form a cooling loop. The cooling liquid in the cooling pipe 310 exchanges heat with the hot air in the sealed cavity, thereby taking away the heat and achieving the heat dissipation effect.
[0059] Referring to Figure 4 As shown, Figure 4 Fig. 4 is a structural schematic view of the transformer 400 in an embodiment of the application. The transformer 400 comprises a base 410, a transformer body 420, and an isolation beam 430. The base 410 is used for bearing the transformer body 420. The isolation beam 430 is arranged on the side of the base 410 away from the transformer body 420. The arrangement of the isolation beam 430 allows a certain spacing between the transformer body 420 and the bearing seat 200. When the bearing seat 200 accidentally accumulates water, the isolation beam 430 can isolate the transformer body 420 from the water, thereby reducing the risk of water damage to the transformer body 420.
[0060] In some embodiments, the transformer body 420 adopts a three-dimensional winding core dry-type transformer structure, including a three-dimensional winding core 421, a coil 422, a clamping structure 423 for clamping the three-dimensional winding core 421, a lead wire 424 for leading in the voltage before transformation and leading out the voltage after transformation, and the like, and the coil 422 is wound on the three-dimensional winding core 421, which will not be described here.
[0061] The heat dissipation device 10 of the present application can seal and waterproof the transformer 400 while dissipating heat from the transformer 400. The sealed cavity 110 defined by the shell 100 preliminarily waterproofs the transformer 400, and the transformer 400 is further waterproofed by the preset interval 210, the isolation beam 430, the base 500, and the like, greatly reducing the risk of water damage to the transformer 400.
[0062] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.
[0063] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A heat dissipating device, characterized by, The heat dissipation device comprises: a housing defining a sealed cavity; a bearing seat arranged in the sealed cavity for bearing a transformer, a side of the bearing seat away from the transformer having a preset interval with an inner wall of the sealed cavity; and a cooling assembly arranged on the housing.
2. The heat dissipating device according to claim 1, wherein The housing comprises an inner cylinder, an outer cylinder and two sealing plates, two sealing plates being arranged at two ends of the inner cylinder along an extension direction of the inner cylinder and defining the sealed cavity together with the inner cylinder. The outer cylinder is arranged outside the inner cylinder to define a heat dissipation cavity with the inner cylinder, and part of the cooling assembly is arranged in the heat dissipation cavity.
3. The heat dissipating device of claim 2, wherein, The cooling assembly comprises a cooling pipe and a heat dissipation assembly, the cooling pipe being arranged in the heat dissipation cavity and surrounding the inner cylinder along an axis parallel to the extension direction of the inner cylinder. The heat dissipation assembly is arranged outside the housing and has a cooling liquid channel. The outer cylinder is provided with an inlet and an outlet, a first end of the cooling pipe passing through the inlet and being in communication with one end of the cooling liquid channel, and a second end of the cooling pipe passing through the outlet and being in communication with the other end of the cooling liquid channel.
4. The heat dissipating device according to claim 3, wherein The heat dissipation assembly comprises a circulating pipe and a heat sink, the cooling liquid channel being formed in the circulating pipe. The heat sink is arranged on one side of the circulating pipe for dissipating heat from the cooling liquid flowing in the cooling liquid channel.
5. The heat dissipating device of claim 2, wherein The bearing seat is arranged on the inner wall of the inner cylinder and has the preset interval with the inner wall of the inner cylinder.
6. The heat dissipating device of claim 2, wherein The heat dissipation device further comprises a plurality of heat dissipation fins, the heat dissipation fins being arranged on the inner wall of the inner cylinder and being arranged on the inner wall of the inner cylinder at equal intervals along an axis parallel to the extension direction of the inner cylinder.
7. The heat dissipating device of claim 2, wherein The sealing plate is provided with a plurality of wire holes, and the wire holes are provided with sealing elements.
8. The heat dissipating device of claim 1, wherein The heat dissipation device further comprises a base arranged on the outer wall of the housing.
9. A pressure varying system characterized by, The heat dissipation device comprises a transformer and the heat dissipation device of any one of claims 1-8, the transformer being arranged in the heat dissipation device.
10. The pressure varying system of claim 9, wherein, The transformer comprises a base, a transformer body and an isolation beam, the base being arranged for bearing the transformer body, and the isolation beam being arranged on a side of the base away from the transformer body. The base is arranged for bearing the transformer body, and the isolation beam is arranged on a side of the base away from the transformer body.