Self-cooling flying wing type radiator for transformer

Abstract

The invention relates to the technical field of heat dissipation, in particular to a self-cooling flying wing type radiator for a transformer, which comprises a heat dissipation core body, an oil inlet structure and an oil outlet structure, the oil inlet structure and the oil outlet structure are symmetrically arranged on the oil inlet side and the oil outlet side of the heat dissipation core body; the heat dissipation core body comprises a mechanical structure frame and M heat dissipation fin sets transversely arranged in the mechanical structure frame. Each radiating fin group comprises N all-aluminum radiating flat tubes which are longitudinally arranged, and M and N are natural numbers greater than 1; the radiating flat tube comprises a flat base tube and a flying wing which is integrally formed on the flat base tube in a shoveling manner; the oil inlet side and the oil outlet side of each cooling fin set are connected with an oil inlet structure and an oil outlet structure through longitudinally-arranged tube bundle end plates respectively. The tube bundle end plate is provided with a hole channel corresponding to an oil way of the heat dissipation flat tube; the head end and the tail end of the tube bundle end plate are connected with the mechanical structure frame into a whole. The heat dissipation device can adapt to heat dissipation core bodies with different heights, the light weight of the whole product is achieved, and the heat dissipation effect is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation, and in particular to a self-cooling flying wing type heat sink for a transformer. Background Art

[0002] In recent years, with the growth of electricity demand, the load on the power grid has become increasingly heavier, and transformers have been in full load or overload state for a long time. Therefore, rapid and effective heat dissipation is particularly important for improving the overload capacity of transformers, responding to emergencies and ensuring safe operation.

[0003] A transformer radiator is a heat exchange device that reduces the temperature of the cooling oil in a distribution transformer or a supply transformer by transferring heat from the transformer oil to the surrounding air.

[0004] There are many types of transformer radiators on the market, which are usually composed of an inlet manifold, an outlet manifold and a radiator core. During operation, transformer oil flows into the radiator core through the inlet manifold, and at least one oil flow channel is provided inside the core to transport the oil to the outlet manifold.

[0005] However, most existing transformer radiators use an iron fin structure, and the heat dissipation core is also made of iron. Under the same heat exchange conditions, this structure is not only heavy, but also the core height of the radiator is usually fixed for a specific transformer, which limits the adjustability of the overall height of the radiator to adapt to different spaces. In addition, the current arrangement and structural form of the radiator are relatively simple, which leads to less than ideal heat dissipation effect and efficiency. Furthermore, although the natural wind around the radiator will take away some heat, current technology rarely involves how to collect and utilize this natural wind to improve heat dissipation efficiency. Summary of the invention

[0006] In view of the above technical problems existing in the prior art, the object of the present invention is to provide a self-cooling flying wing radiator for transformers that can adapt to heat dissipation cores of different heights and has good heat dissipation effect.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A self-cooling flying wing radiator for a transformer comprises a heat dissipation core, an oil inlet structure and an oil outlet structure; the oil inlet structure and the oil outlet structure are symmetrically arranged on the oil inlet side and the oil outlet side of the heat dissipation core;

[0009] The heat dissipation core comprises a mechanical structure frame and M groups of heat dissipation fins arranged transversely in the mechanical structure frame; each heat dissipation fin group comprises N heat dissipation flat tubes arranged longitudinally, wherein M and N are both natural numbers greater than 1; the heat dissipation flat tubes comprise a flat base tube and a wing formed by integrated scraping on the flat base tube;

[0010] The oil inlet side and the oil outlet side of each heat sink group are connected to the oil inlet structure and the oil outlet structure respectively through a longitudinally arranged tube bundle end plate; the tube bundle end plate has a channel corresponding to the heat dissipation flat tube oil circuit; the head and tail ends of the tube bundle end plate are connected to the mechanical structure frame as a whole;

[0011] The oil inlet structure or the oil outlet structure comprises a plurality of oil collecting chambers corresponding to the end plates of the tube bundles on the corresponding side and a main pipe;

[0012] One side of the oil collecting chamber is attached and connected to the corresponding tube bundle end plate, and the mother pipe is arranged on the other side of the oil collecting chamber; corresponding oil holes are arranged on both sides of the oil collecting chamber to realize the oil circuit connection between the oil inlet structure, the heat dissipation core and the oil outlet structure.

[0013] As a preferred technical solution, the mother pipe is completely cut off from the oil collecting chamber on the side where it is located.

[0014] As a preferred technical solution, a manifold is provided between the main pipe and each oil collecting chamber; one end of the manifold is connected to the main pipe, and the other end is connected to the oil collecting chamber.

[0015] As a preferred technical solution, all the heat dissipating flat tubes are arranged in any one of an orthogonal arrangement, an oblique arrangement, a corner row arrangement, a corner row arrangement, a human row arrangement or a human row arrangement.

[0016] As a preferred technical solution, the wings on the heat dissipation flat tubes are any one of straight line type, arc type and corrugated type.

[0017] As a preferred technical solution, the corrugation types include straight waves, sine waves, trapezoidal tooth waves and triangular tooth waves.

[0018] As a preferred technical solution, the fin angle between the wing on each of the heat dissipating flat tubes and the flat base tube is 30-60°; and / or, the wing on the heat dissipating flat tube can be perpendicular or inclined to the length direction of the flat base tube plane on which it is located.

[0019] As a preferred technical solution, the distribution spacing of the fins on each of the heat dissipation flat tubes on the base tube can be consistent or inconsistent; and the distribution spacing is maintained at 1 to 20 mm.

[0020] As a preferred technical solution, it also includes an air guide cover; the air guide cover is a cylindrical structure with upper and lower openings, and the heat dissipation core is centrally arranged on the inner side of the air guide cover.

[0021] As a preferred technical solution, the mechanical structure frame is an integral type, that is, the heat dissipation core includes two front and rear frame plates and is connected as a whole through upper and lower tube bundle end plates; the heat dissipation core is entirely embedded in the mechanical structure frame.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. The present invention improves the heat dissipation core from a steel heat dissipation plate to an all-aluminum heat dissipation flat tube, and the surface area of ​​the heater is greatly increased, so that more air can be heated and rise, thereby enhancing the natural convection and heat dissipation effect.

[0024] 2. By adjusting the distribution direction of the heat sink group, the distribution direction of the heat dissipation flat tube, the shape of the wing, the distribution density and the fin angle between the wing and the flat base tube, a better heat dissipation effect can be achieved.

[0025] 3. Set or remove the manifold between the main pipe and the oil collecting chamber according to the height of the heat dissipation core to adapt to heat dissipation cores of different heights and meet the heat dissipation needs of different scenarios.

[0026] 4. By setting up the air guide, the hot air flow around the heat sink group and the bottom of the radiator can be effectively concentrated and guided. This concentration promotes the formation of forced convection, which not only significantly improves the coefficient of convection heat transfer, but also quickly takes away the heat on the surface of the radiator, ensuring the efficient operation of the entire radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of a self-cooling flying wing radiator for a transformer with a manifold according to the present invention;

[0028] Figure 2 It is a three-dimensional structural schematic diagram of the self-cooling flying wing type radiator for transformers in the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of a single heat sink group in the present invention;

[0030] Figure 4 It is a three-dimensional structural schematic diagram of a self-cooling flying wing type radiator for a transformer without a manifold in the present invention;

[0031] Figure 5 It is a schematic diagram of the parallel orthogonal arrangement of the heat dissipation flat tubes in the present invention;

[0032] Figure 6 It is a schematic diagram of the parallel and oblique arrangement of the heat dissipation flat tubes in the present invention;

[0033] Figure 7 It is a schematic diagram of the angular arrangement of the heat dissipation flat tubes in the present invention;

[0034] Figure 8 It is a schematic diagram of the inverse arrangement of the angular rows of the heat dissipation flat tubes in the present invention;

[0035] Fig. 9 It is a schematic diagram of the arrangement of heat dissipation flat tubes in the present invention;

[0036] Fig.10 It is a schematic diagram of the heat dissipation flat tubes arranged in reverse order in the present invention;

[0037] Fig.11 It is a schematic diagram of a single heat dissipation flat tube in the present invention;

[0038] Fig.12 for Fig.11 A partial enlarged view of

[0039] Fig.13 It is a schematic diagram of the structure of the oblique fins in a single heat dissipation flat tube in the present invention;

[0040] Fig.14 It is a schematic diagram of an air guide cover installed on the upper part of the heat sink group in the present invention;

[0041] Fig.15 It is a schematic diagram of the present invention in which the upper and lower parts of the heat sink group are simultaneously equipped with air guide covers;

[0042] Fig.16 It is a schematic diagram of the heat sink assembly in the present invention being integrally installed with an air guide cover.

[0043] In the figure: 1. heat dissipation core; 11. mechanical structure frame; 12. heat sink group; 13. heat dissipation flat tube; 13a. flat base tube; 13b. flying wing; 14. tube bundle end plate; 14a. channel; 2. oil inlet structure; 21. oil collecting chamber: 22. main pipe; 23. manifold; 3. oil outlet structure; 4. air guide cover. DETAILED DESCRIPTION

[0044] The present invention will be described in further detail below with reference to the accompanying drawings.

[0045] Example 1

[0046] See also Figures 1 to 4 The present embodiment discloses a self-cooling flying wing type radiator for a transformer, comprising a heat dissipation core 1, an oil inlet structure 2 and an oil outlet structure 3; the oil inlet structure 2 and the oil outlet structure 3 are symmetrically arranged on the oil inlet side and the oil outlet side of the heat dissipation core 1, the oil inlet structure 2 is connected to the oil outlet of the transformer, and the oil outlet structure 3 is connected to the oil inlet of the transformer, so that the high-temperature oil inside the transformer is extracted by an oil pump, and is dissipated and cooled by the heat dissipation core 1, and then transported back to the transformer.

[0047] The heat dissipation core 1 includes a mechanical structure frame 11 and M heat dissipation fin groups 12 arranged transversely in the mechanical structure frame; each heat dissipation fin group 12 includes N all-aluminum heat dissipation flat tubes 13 arranged longitudinally, and the heat dissipation flat tubes 13 are provided with an oil path connecting the oil inlet structure 2 and the oil outlet structure 3; wherein M and N are both natural numbers greater than 1;

[0048] In the heat dissipation core 1 of the present invention, the oil inlet side and the oil outlet side of each heat dissipation fin group 12 are respectively connected to the oil inlet structure 2 and the oil outlet structure 3 through the longitudinally arranged tube bundle end plate 14; the tube bundle end plate 14 has a channel 14a corresponding to the oil path of the heat dissipation flat tube 13; the mechanical structure frame 11 is an integral type, that is, it includes two front and rear frame plates and is connected as a whole through the upper and lower tube bundle end plates 14; the heat dissipation core is embedded in the mechanical structure frame as a whole, and the assembly is simpler.

[0049] Example 2

[0050] like Figure 1 , 2 As shown, the oil inlet structure 2 or oil outlet structure of the present invention includes a plurality of oil collecting chambers 21 and a mother pipe 22 corresponding one by one to the tube bundle end plate 14 on the side; the oil collecting chamber 21 is a tube structure and has a semicircular or rectangular cross-section; when the cross-section of the oil collecting chamber 21 is semicircular, its plane side is attached to and connected to the corresponding tube bundle end plate 14, and the mother pipe 22 is arranged on the arc side of the oil collecting chamber 21; the arc side and the plane side of the oil collecting chamber 21 are both provided with corresponding oil holes to realize the oil path connection between the oil inlet structure 2, the heat dissipation core 1 and the oil outlet structure 3.

[0051] The actual size of the heat dissipation core 1 is related to its heat dissipation requirements. In actual applications, the distance between the main pipe 22 of the oil inlet structure 2 and the oil outlet structure 3 is determined. Therefore, a manifold 23 can be set between the main pipe 22 and the oil collecting chamber 21 according to the height of the heat dissipation core 1.

[0052] Specifically, Figure 1 , 2 As shown, when the height of the heat dissipation core 1 is not enough to contact the main pipe 22, a manifold 23 is provided between the main pipe 22 and each oil collecting chamber 21; one end of the manifold 23 is connected to the main pipe 22, and the other end is connected to the oil collecting chamber 21, so as to realize the connection between the main pipe 22 and the oil collecting chamber 21. Figure 4 As shown, when the height of the heat dissipation core 1 meets the installation requirements, that is, the mother pipe 22 is completely cut off from the oil collecting chamber on the side, and the communication with the internal oil circuit of the heat dissipation core 1 is directly achieved.

[0053] Example 3

[0054] like Figures 5 to 10 As shown, based on the embodiments 1 and 2, this embodiment improves the arrangement direction of the heat sink group 12 and the internal heat dissipation flat tubes 13, including the following technical solutions:

[0055] 1) All heat dissipation flat tubes 13 are arranged orthogonally or obliquely, such as Figure 5 As shown, in the M heat sink groups 12, all heat dissipation flat tubes 13 are arranged orthogonally parallel to the axis of the mother tube 22; or as Figure 6As shown, based on the axial direction of the mother tube 22, all the heat dissipation flat tubes 13 are tilted to the left or right at the same time to form an oblique arrangement.

[0056] 2) If Figure 7 As shown, all the heat dissipation flat tubes are arranged in angular rows. Specifically, when N heat dissipation flat tubes 13 in the same heat sink group 12 are arranged in parallel, the heat dissipation flat tubes 13 in adjacent groups are inclined in opposite directions, that is, one is inclined to the left and the other is inclined to the right.

[0057] 3) If Figure 8 As shown, all the heat dissipation flat tubes are arranged in reverse angular rows. Specifically, the heat dissipation flat tubes 13 in adjacent heat dissipation fin groups 12 are not arranged in parallel, and the adjacent N heat dissipation flat tubes 13 in the same heat dissipation fin group 12 are inclined in opposite directions.

[0058] 4) If Fig. 9 , 10 As shown, all the heat dissipating flat tubes are arranged in a row or in a reverse row. Specifically, the heat dissipating flat tubes 13 in all the heat dissipating fin groups 12 are arranged in the same manner, but the adjacent N heat dissipating flat tubes 13 in the same heat dissipating fin group 12 are inclined in opposite directions.

[0059] According to experiments, compared with the orthogonal arrangement, the oblique arrangement and the angular arrangement increase the path of the wind surface and the flow along the way. When the air is completely steady and still, the difference is not obvious; but when there is an air flow of more than 0.4m / s, the oblique arrangement has significantly more heat transfer than the parallel orthogonal arrangement. When the wind surface passes unsteadily, the heat transfer capacity of the angular arrangement is more significant than that of the oblique arrangement.

[0060] Both the angular row arrangement and the angular row reverse arrangement increase the proportion of the air side in the heat sink volume. However, under the condition of limiting a certain dimension or limiting the heat sink volume, the number of rows will be reduced, which means a reduction in the heat exchange area. Therefore, whether the comprehensive heat exchange capacity is increased depends on the air side conditions. If the heat sink is installed in an environment with a year-round wind speed exceeding 2m / s, this arrangement saves consumables and can meet the heat exchange requirements. However, in terms of the difference in wind direction and row spacing, the angular row reverse arrangement is more conducive to strong winds or more compact designs.

[0061] Example 4

[0062] See also Figure 11 to Figure 13On the basis of embodiments 1 to 3, this embodiment improves the flying wings 13b on the heat dissipation flat tube 13. Specifically, the heat dissipation flat tube 13 includes a flat base tube 13a and flying wings 13b formed by integrated scraping on both sides of the flat base tube 13a with a larger area. The surface area of ​​the radiator is significantly increased compared to the traditional heat sink, thereby promoting the transfer of heat during the air flow. The integrated design of the flat base tube and the heat dissipation flying wings 13b realizes efficient body heat dissipation and almost eliminates the temperature gradient between the base tube and the flying wings 13b. Therefore, the radiator group can effectively heat the air, increase the rising power of the air, and thus accelerate the heat dissipation process.

[0063] Based on the initial temperature difference of 50K, the ambient temperature of 20℃ and the altitude is not considered, the heat dissipation flux density of the traditional sheet in the prior art is generally 2-3w / m 2 ·K; The heat flux density of the wing-shaped radiator in the present invention can reach 6-10w / m 2 ·K.

[0064] In addition, the heat dissipation materials provided in the prior art are usually steel or iron. The heat dissipation flat tube 13 made of all-aluminum alloy in the present invention not only has a low density, which can reduce the overall weight of the radiator, but also can avoid "material accumulation and tool sticking" caused by too soft materials and "wing cracking" caused by too hard materials during the scraping process, and also has relatively excellent anti-corrosion performance.

[0065] In addition, it can be known from the basic concepts of heat transfer that the radiation heat between two surfaces at any position is related to the solid angle between them. That is, the larger the angle between the flying wing 13b and the flat base tube 13a, the worse the radiation heat exchange effect, and thus the smaller the radiation heat exchange between the two object surfaces. At the same time, based on the angle between the flying wing 13b and the flat base tube 13a, the larger the surface area, the greater the total radiation heat exchange between the two surfaces, and the better the heat exchange effect. Therefore, a better heat dissipation effect can be achieved by adjusting the surface area, i.e., shape, of the flying wing 13b and the fin angle between the flying wing 13b and the flat base tube 13a.

[0066] Preferably, in this embodiment, the flying wings 13b on the heat dissipating flat tube 13 are any one of a straight type, an arc type and a corrugated type, and the corrugated type includes a straight wave, a sine wave, a trapezoidal tooth wave and a triangular tooth wave, etc. In terms of heat dissipation effect, the corrugated type > the arc type > the straight type, but the sine wave has the best heat dissipation effect among the corrugated types.

[0067] It should be noted that if the distance between the wings 13b is too small, the height of the wings 13b is too high, or the fin angle between the wings 13b and the flat base tube 13a is too small, the projection of the wings 13b on the plane where the side of the flat base tube 13a is located will overlap, which is not conducive to heat dissipation. Therefore, preferably, when the wings 13b on the heat dissipation flat tube 13 are corrugated and sinusoidal, the wave height is preferably 3mm and the wavelength is preferably 6mm. Fig.12 As shown, the fin angle θ between the wing 13b on each of the heat dissipation flat tubes 13 and the flat base tube 13a is 30-60°. The distribution spacing of the wing 13b on each of the heat dissipation flat tubes 13 on the base tube can be consistent or inconsistent; and the distribution spacing is maintained at 1-20 mm. More preferably, the distribution spacing is preferably maintained at 6, 8, 10, 12 mm.

[0068] The wings 13b on the heat dissipation flat tube 13 may be perpendicular or inclined to the length direction of the flat base tube 13a plane on which they are located; Fig.13 As shown, when the flying wing 13b is inclined to the length direction of the plane of the flat base tube 13a where it is located, the angle β between the two is 75-83°.

[0069] Example 5

[0070] See also Figures 14 to 16 On the basis of embodiments 1 to 4, the radiator of this embodiment is provided with an air guide 4; the air guide 4 is a cylindrical structure with upper and lower openings, and the heat dissipation core 1 is centrally arranged inside the air guide 4. The design and application of the air guide 4 is actually similar to an efficient "chimney" mechanism, which can effectively concentrate and guide the hot air flow rising around the heat sink group 12 and the bottom of the radiator. Such a gathering effect promotes the formation of forced convection, which not only significantly improves the coefficient of convective heat transfer, but also can quickly take away the heat on the surface of the radiator, ensuring the efficient operation of the entire radiator.

[0071] When the air guide cover 4 is arranged on the upper part of the radiator, that is, the oil inlet structure 2 and the top of the heat dissipation core 1 are wrapped in the air guide cover 4, the heat dissipation efficiency is significantly improved. In actual use, the height of the air guide cover 4, that is, the length of the air guide channel can be adjusted according to specific needs.

[0072] On this basis, when the lower part of the radiator is also provided with an air guide 4, that is, the oil outlet structure 3 and the bottom of the heat dissipation core 1 are wrapped in the air guide 4, the heat dissipation effect is basically the same as that of only setting the air guide 4 on the upper part of the radiator.

[0073] In addition, the air guide cover 4 may also be wrapped around the entire outside of the radiator.

[0074] In this embodiment, the geometric shape of the air guide cover 4 is designed to be a cylindrical or rectangular cylindrical structure with a constant diameter from top to bottom. This regular shape can ensure the stability of airflow; but under the premise of pursuing heat dissipation effect, the longitudinal cross-section of the air guide cover 4 can be designed to be trapezoidal, conical or hyperbolic. The inner wall structure of the air guide cover 4 of this design can effectively promote the guidance of airflow, which is conducive to the upward convergence of air, thereby enhancing the efficiency of convective heat dissipation.

[0075] Preferably, an air flow channel of a certain size is provided between the exterior of the heat dissipation core 1 and the inner wall of the air guide cover 4 to facilitate the passage of air around the radiator core.

[0076] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A self-cooling flying wing radiator for a transformer, comprising a heat dissipation core, an oil inlet structure and an oil outlet structure; the oil inlet structure and the oil outlet structure are symmetrically arranged on the oil inlet side and the oil outlet side of the heat dissipation core; characterized in that: The heat dissipation core comprises a mechanical structure frame and M heat dissipation fin groups arranged transversely in the mechanical structure frame; each heat dissipation fin group comprises N heat dissipation flat tubes arranged longitudinally, wherein M and N are both natural numbers greater than 1; the heat dissipation flat tubes comprise a flat base tube and a wing formed by integrated scraping on the flat base tube; The oil inlet side and the oil outlet side of each heat sink group are connected to the oil inlet structure and the oil outlet structure respectively through a longitudinally arranged tube bundle end plate; the tube bundle end plate has a channel corresponding to the heat dissipation flat tube oil circuit; the head and tail ends of the tube bundle end plate are connected to the mechanical structure frame as a whole; The oil inlet structure or the oil outlet structure comprises a plurality of oil collecting chambers corresponding to the end plates of the tube bundles on the corresponding side and a main pipe; One side of the oil collecting chamber is attached and connected to the corresponding tube bundle end plate, and the mother pipe is arranged on the other side of the oil collecting chamber; corresponding oil holes are arranged on both sides of the oil collecting chamber to realize the oil circuit connection between the oil inlet structure, the heat dissipation core and the oil outlet structure.

2. The self-cooling flying wing radiator for transformer according to claim 1, characterized in that: The main pipe is completely intersected with the oil collecting chamber on the side where it is located.

3. The self-cooling flying wing heat sink for transformer according to claim 1, characterized in that: A manifold is provided between the main pipe and each oil collecting chamber; one end of the manifold is connected to the main pipe, and the other end is connected to the oil collecting chamber.

4. The self-cooling flying wing heat sink for transformer according to claim 1, characterized in that: All heat dissipation flat tubes are arranged in any of the following ways: orthogonal arrangement, oblique arrangement, corner row arrangement, corner row reverse arrangement, human row arrangement or human row reverse arrangement.

5. The self-cooling flying wing heat sink for transformer according to claim 1, characterized in that: The wings on the heat dissipation flat tubes are any one of a straight line type, an arc type and a corrugated type.

6. The self-cooling flying wing heat sink for transformer according to claim 5, characterized in that: The wave types include straight wave, sine wave, trapezoidal tooth wave and triangular tooth wave.

7. The self-cooling flying wing heat sink for transformer according to claim 1, characterized in that: The fin angle between the wing on each of the heat dissipation flat tubes and the flat base tube is 30 to 60 degrees; And / or, the fins on the heat dissipating flat tubes may be perpendicular or inclined to the length direction of the flat base tube plane on which they are located.

8. The self-cooling flying wing heat sink for transformer according to claim 1, characterized in that: The distribution spacing of the fins on each of the heat dissipation flat tubes on the base tube can be consistent or inconsistent; and the distribution spacing is maintained at 1 to 20 mm.

9. The self-cooling flying wing heat sink for transformer according to claim 1, characterized in that: It also includes an air guide cover; the air guide cover is a cylindrical structure with upper and lower openings, and the heat dissipation core is centrally arranged on the inner side of the air guide cover.

10. The self-cooling flying wing heat sink for transformer according to claim 1, characterized in that: The mechanical structure frame is of an integral type, that is, the heat dissipation core comprises two front and rear frame plates connected as a whole through upper and lower tube bundle end plates; the heat dissipation core is entirely embedded in the mechanical structure frame.

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