CN218722381U - Explosion-proof cooling device - Google Patents

Abstract

The utility model provides a flame proof cooling device, flame proof heat dissipation casing are provided with the seal chamber who is used for holding heat source spare, and cooling base holding is in the seal chamber, and the cooling base includes heat conduction shell and the heat pipe sealed in heat conduction shell, and heat conduction shell supports between heat source spare and flame proof heat dissipation casing, and the heat pipe is used for transmitting the heat that heat source spare produced to flame proof heat dissipation casing through heat conduction shell. The utility model discloses a flame proof heat dissipation casing with seal chamber holds heat source spare, can carry out high-efficient pure physics heat dissipation to heat source spare through heat pipe cooperation flame proof heat dissipation casing, cooling base on guaranteeing to heat source spare flame proof's basis, dispel the heat fast through the air heat transfer with in the external environment, can circulate and maintain heat source spare in standard operating temperature.

Description

Explosion-proof cooling device

Technical Field

The utility model belongs to the technical field of the cooling, especially, relate to a flame proof cooling device.

Background

The Stirling refrigerator which needs to work in the explosion-proof enclosure exists in the explosion-proof industry, the Stirling refrigerator can continuously generate heat in the working process, when the temperature of the Stirling refrigerator is too high, the temperature of a compressed gas medium generated by the Stirling refrigerator is increased, and when the temperature is higher than the temperature, the compressor can be damaged. At present, several commonly used heat dissipation modes mainly comprise air-cooled heat dissipation, liquid-cooled heat dissipation and chemical heat dissipation, wherein the air-cooled heat dissipation cannot realize the heat dissipation function in the explosion-proof enclosure, and the fan in the explosion-proof enclosure also serves as a heat source, so that the temperature in the explosion-proof enclosure does not fall or rise reversely; liquid cooling heat dissipation is conducted through heat exchange between liquid in the liquid cooling system and the Stirling refrigerator, the liquid needs to enter a condenser at the rear end of the liquid cooling system, cooling is conducted through air cooling, and heat on the condenser cannot be released to the outside of the explosion-proof shell; the refrigeration substances such as liquid nitrogen, dry ice and the like which are usually adopted for chemical heat dissipation are consumables and need to be continuously supplemented, and the explosion-proof shell does not have the condition of continuously supplementing the refrigeration substances, so that the chemical heat dissipation is not suitable for conventional industrial occasions.

Therefore, the Stirling refrigerator in the explosion-proof enclosure generally radiates heat through heat exchange between the Stirling refrigerator and the explosion-proof enclosure, and the Stirling refrigerator has low heat radiation efficiency and poor heat radiation effect, and cannot prevent heat from being continuously accumulated in the explosion-proof enclosure, so that the Stirling refrigerator is damaged and burnt due to overheating.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a flame proof cooling device, aim at solving among the prior art heat source spare can not effectively refrigerated technical problem in the flame proof casing.

In order to achieve the above object, the utility model provides a flame proof cooling device, flame proof cooling device includes: the explosion-proof heat dissipation shell comprises an explosion-proof heat dissipation shell and a cooling base, wherein the explosion-proof heat dissipation shell is provided with a sealing cavity used for containing a heat source piece, the cooling base is contained in the sealing cavity and comprises a heat conduction shell and a heat pipe sealed in the heat conduction shell, the heat conduction shell is supported between the heat source piece and the explosion-proof heat dissipation shell, and the heat pipe is used for transmitting heat generated by the heat source piece to the explosion-proof heat dissipation shell through the heat conduction shell.

The embodiment of the utility model provides an in, the heat conduction casing to the sunken holding tank that forms of direction of flame proof heat dissipation casing, heat source spare joint in the holding tank and with heat conduction casing face contact.

The embodiment of the utility model provides an in, flame proof cooling device is still including compressing tightly the lid, compress tightly the lid be used for with heat source spare compress tightly in the holding tank.

The embodiment of the utility model provides an in, compress tightly the lid offer be used for with the draw-in groove of heat source spare joint, the draw-in groove with the holding tank cooperation forms and is used for encircleing the installation cavity of heat source spare surface.

In an embodiment of the utility model, the draw-in groove inner wall covers there is the sealing layer, the sealing layer is used for making heat source spare with compress tightly the lid and closely laminate.

In the embodiment of the utility model, the heat conducting layer covers the outside of the groove wall of the holding groove; and/or the heat-conducting shell is covered with a heat-radiating layer towards the heat-radiating end face of the explosion-proof heat-radiating shell.

In an embodiment of the present invention, the heat conducting casing includes: the heat conducting support is provided with a heat conducting groove, and the heat conducting groove is formed in the heat conducting support; the two connecting lugs are respectively arranged on two sides of the heat conduction support and are used for connecting the heat conduction shell and the explosion-proof radiating shell, and the height of the heat conduction support is larger than that of the connecting lugs.

In an embodiment of the present invention, the heat pipe includes: the device comprises a tube shell and a capillary liquid absorption core, wherein a heat dissipation medium for volatilization and heat dissipation is filled in the tube shell; the capillary liquid absorbing core is arranged on the inner pipe surface of the pipe shell and used for guiding the heat dissipation medium to flow back.

The embodiment of the utility model provides an in, the tube orientation one side of heat source spare is provided with arc heat absorption terminal surface, arc heat absorption terminal surface to flame proof radiator shell protrusion.

The embodiment of the utility model provides an in, the tube is located be close to in the heat conduction shell the position setting of flame proof heat dissipation casing.

Through the technical scheme, the embodiment of the utility model provides a flame proof cooling device has following beneficial effect:

the heat that the during operation of heat source spare produced is led to the cooling base through the heat exchange on, when the heat pipe one end in the cooling base was heated, according to current heat pipe technique, can lead the heat to cooling base below fast, cooling base below is closely laminated with flame proof heat dissipation casing, the heat will be continuously spread to flame proof heat dissipation casing surface, cooling base simple structure, high durability and convenient use, more importantly the heat pipe structure belongs to the work of no consumption in long-term use, need not supply power, also need not consume any medium, long-term non-maintaining, because it is pure physics heat conduction, can not produce the trouble during normal use, very big reduction the comprehensive cost in the use, because flame proof heat dissipation casing, have very big hot melt and heat radiating area, can carry out quick heat dissipation through the air heat transfer with in the external environment, with this circulation maintenance heat source spare in standard operating temperature.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, but do not constitute a limitation of the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of an explosion suppression cooling device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an explosion suppression cooling device in an embodiment of the present invention at a viewing angle.

Fig. 3 is a schematic structural diagram of an explosion suppression cooling device at another viewing angle according to an embodiment of the present invention.

Description of the reference numerals

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Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The following describes the flame proof cooling device according to the utility model with reference to the attached drawings.

As shown in fig. 1 and fig. 2, in an embodiment of the present invention, a flame-proof cooling device 100 is provided, in an embodiment, the flame-proof cooling device 100 includes: the explosion-proof heat dissipation machine shell comprises an explosion-proof heat dissipation machine shell 1 and a cooling base 2, wherein the explosion-proof heat dissipation machine shell 1 is provided with a sealing cavity 11 used for containing a heat source part 200, the cooling base 2 is contained in the sealing cavity 11, the cooling base 2 comprises a heat conduction shell 21 and a heat pipe 22 sealed in the heat conduction shell 21, the heat conduction shell 21 is supported between the heat source part 200 and the explosion-proof heat dissipation machine shell 1, and the heat pipe 22 is used for transmitting heat generated by the heat source part 200 to the explosion-proof heat dissipation machine shell 1 through the heat conduction shell 21.

It can be understood that the heat source device 200 in this embodiment may be a compressor of a stirling refrigerator, the heat pipe 22 may adopt a heat pipe structure in the prior art, and the explosion-proof cooling device 100 is mainly applied to explosion-proof cooling of the compressor of the stirling refrigerator. The shape of the flameproof heat dissipation enclosure 1 in fig. 1 to 3 is schematic, and in other embodiments, the shape of the flameproof heat dissipation enclosure 1 can be set according to actual use requirements.

When the flameproof cooling device 100 in the embodiment is used, the heat conducting shell 2 is supported between the heat source element 200 and the flameproof radiating shell 1, heat generated when the heat source element 200 works can be conducted to the cooling base 2 through heat exchange, one end, close to the heat source element 200, of the heat pipe 22 in the cooling base 2 is heated, heat can be quickly conducted to one end, close to the flameproof radiating shell 1, of the cooling base 2, the cooling base 2 is tightly attached to the flameproof radiating shell 1, the heat can be continuously diffused to the surface of the flameproof radiating shell 1, the flameproof radiating shell 1 can contain the heat source element 200, the flameproof radiating shell has large hot melting and radiating area, heat can be quickly radiated through heat exchange with air in the external environment, and the heat source element 200 can be circularly maintained within the standard operation temperature. The flameproof cooling device 100 in the embodiment contains the heat source element 200 through the flameproof heat dissipation case 1 with the seal cavity 11, on the basis of ensuring the flameproof of the heat source element 200, the heat pipe 22 is matched with the flameproof heat dissipation case 1, and the cooling base 2 can carry out high-efficiency pure physical heat dissipation on the heat source element 200, so that no consumption work, no auxiliary cooling system, no power supply, no medium consumption and no maintenance are needed in the long-term use process, the long-term non-maintenance can be realized, no fault is generated during the normal use process, and the comprehensive cost in the use process is greatly reduced.

Specifically, the upper end of the cooling base 2 supports the heat source element 200, and the lower end of the cooling base 2 is of a plane structure closely attached to the explosion-proof radiating casing 1. In one embodiment, the heat source element 200 is a 300W stirling cooler, and the compressor of the stirling cooler must be stopped for cooling after operating for 25min from a shutdown state without any cooling base and without any heat dissipation measures, after the compressor reaches a surface temperature of more than 80 ℃. After the cooling base 2 is additionally arranged, when the compressor runs for 1h15min from a shutdown state, the surface temperature of the compressor is stabilized at 63 ℃, at the moment, the heat generation and heat dissipation reach a balance state, and at the temperature, the Stirling refrigerator can normally run for a long time.

Specifically, the heat conducting shell 21 is recessed towards the direction of the flameproof heat dissipation case 1 to form an accommodating groove 23, and the heat source element 200 is clamped in the accommodating groove 23 and in surface contact with the heat conducting shell 21. As shown in fig. 1, the heat source element 200 has a cylindrical shape in one embodiment, and the receiving groove 23 is matched in size to the heat source element 200, and has a semicircular groove-shaped configuration, and the heat source element 200 has a cylindrical shape in another embodiment, and the receiving groove 23 is matched in size to the heat source element 200, and has a circular groove-shaped configuration. Through the holding tank 23 that heat conduction casing 21 set up and heat source spare 200 face contact in this embodiment, can improve the close fit relation of heat conduction casing 21 and heat source spare 200, the cell wall of holding tank 23 can diversely support and spacing heat source spare 200, avoid the condition that heat source spare 200 shifted relative holding tank 23, the stability in use of heat conduction casing 21 has been guaranteed, holding tank 23 and heat source spare 200 face contact simultaneously, can improve the area of contact between holding tank 23 and the heat source spare 200, thereby make heat source spare 200 can be in the short time to the cell wall transmission a large amount of heats of holding tank 23, the radiating efficiency of flame proof cooling device 100 to heat source spare 200 has been improved. The recessed structure and the clamping in the accommodating groove 23 enable the fixing mode of the heat source piece 200 to be simpler, the heat source piece is not easy to move, and the heat source piece 200 is enabled to be wholly radiated to the maximum degree. In other embodiments, the heat source member 200 has other shapes, and the shape of the accommodating groove 23 matches the shape of the heat source member 200.

The embodiment of the utility model provides an in, flame proof cooling device 100 is still including compressing tightly lid 3, compresses tightly lid 3 and is used for compressing tightly heat source spare 200 in holding tank 23. As shown in fig. 2, the heat source element 200 is located between the pressing cover 3 and the heat conducting casing 21, the pressing cover 3 can be detachably connected to the heat conducting casing 21 through a connecting element, in one embodiment, the pressing cover 3 is connected to the heat conducting casing 21 through a screw, in other embodiments, the pressing cover 3 can be detachably connected to the heat conducting casing 21 through a pin, and the present invention is not limited thereto.

In this embodiment, the pressing cover 3 provides a pressing force for the heat source element 200 to the accommodating groove 23 of the heat conducting housing 21, so that the heat source element 200 is fixed between the heat conducting housing 21 and the pressing cover 3, the close adhesion between the heat source element 200 and the accommodating groove 23 can be improved, and the heat conducting effect of the heat source element 200 to the groove wall surface of the accommodating groove 23 is further increased, thereby sufficiently transferring the heat generated by the heat source element 200 to the heat conducting housing 21, allowing the groove wall surface of the accommodating groove 23 to sequentially pass through the heat pipe 22, the lower wall surface attached to the heat conducting housing 21 and the flameproof heat dissipation enclosure 1, and dissipating heat to the external environment outside the flameproof heat dissipation enclosure 1.

The embodiment of the utility model provides an in, compress tightly the lid 231 and offer the draw-in groove 31 that is used for with heat source 200 joint, draw-in groove 31 and holding tank 23 cooperation form around the outer installation cavity 4 of heat source 200. As shown in fig. 2, in an embodiment, the heat source element 200 has a cylindrical shape, and the engaging groove 31 and the receiving groove 23 are semi-circular groove structures capable of engaging with the upper side and the lower side of the heat source element 200, respectively. In this embodiment, the heat source member 200 is surrounded by the compression cover 3 and the cooling base 2, so that the close fitting stability of the heat source member 200 and the cooling base 2 can be further improved, the fixing mode of the heat source member 200 is simpler, the heat source member is not easy to move, and the installation cavity 4 is arranged, so that the maintenance is easy and the occurrence of safety accidents can be reduced.

In an embodiment, the groove wall of the clamping groove 31 is covered with a sealing layer 32, the sealing layer 32 enables the heat source element 200 to be tightly attached to the compression cover 3, and the sealing layer 32 can be a heat conduction silicone layer which completely covers the inner wall of the clamping groove 31; the heat-conducting silica gel can enhance the close fitting degree between the heat source member 200 and the pressing cover 231, so that the heat generated by the heat source member 200 can be sufficiently transferred to the cooling base 2.

In one embodiment, the walls of the receiving groove 23 are covered with the heat conductive layer 24; and the heat-dissipating terminal surface 213 of the heat-conducting casing 21 facing the flameproof heat-dissipating enclosure 1 is covered with the heat-dissipating layer 25, the heat-dissipating terminal surface 213 is a planar structure, both the heat-conducting layer 24 and the heat-dissipating layer 25 in this embodiment can be heat-conducting silicone layers, and the heat-conducting layer 24 completely covers the groove wall of the accommodating groove 23, the heat-dissipating layer 25 completely covers the heat-dissipating terminal surface 213, the heat-conducting layer 24 can enlarge the contact area between the heat source 200 and the heat-conducting casing 21, the heat generated by the heat source 200 can be more fully transferred to the heat-conducting casing 21 through the heat-conducting layer 24, the heat transferred to the heat-conducting casing 21 can be continuously diffused to the surface of the flameproof heat-dissipating enclosure 1 by the heat-dissipating layer 25, and the heat transfer efficiency is improved.

As shown in fig. 3, in an embodiment, the heat conducting housing 21 is a "convex" structure, the heat conducting housing 21 includes a heat conducting support 211 and two engaging lugs 212, the heat conducting support 211 accommodating groove 23 is opened in the heat conducting support 211, the two engaging lugs 212 are respectively disposed on two sides of the heat conducting support 211, the engaging lugs 212 are used for connecting the heat conducting housing 21 and the flameproof heat dissipation enclosure 1, and the height of the heat conducting support 211 is greater than that of the engaging lugs 212.

Specifically, heat conduction casing 21 extends along the fore-and-aft direction, two engaging lug 212 are bilateral symmetry setting relative to heat conduction support 211, heat conduction support 211 and engaging lug 212 all are rectangular form, and circular arc transitional coupling between heat conduction support 211 and the engaging lug 212, can avoid stress concentration, improve the support strength of heat conduction support 211, and the length of engaging lug 212 is the same with the length of heat conduction support 211, the width of engaging lug 212 is less than the width of heat conduction support 211, heat conduction support 211 is used for supporting heat source spare 200, two engaging lug 212 of locating heat conduction support 211 both sides separately can be connected with flame proof heat dissipation casing 1 through the screw, the setting of establishing both sides separately lets heat source spare 200 atress more balanced, make heat source spare 200 more firm installation in flame proof heat dissipation casing 1, the height of heat conduction support 211 is greater than the height of engaging lug 212 can make the holding tank 23 adaptation in the heat conduction support 211 in the heat source spare 200 of not unidimensional.

In one embodiment, the heat pipe 22 includes a pipe shell 221, a heat dissipation medium and a capillary wick, the pipe shell 221 is filled with the heat dissipation medium for absorbing heat and volatilizing, the capillary wick is disposed on an inner pipe surface of the pipe shell 221, the capillary wick is used for guiding the heat dissipation medium to flow back, the heat dissipation medium is made of a material with a low boiling point and is easily volatilized, when one end of the heat pipe is heated, the liquid in the capillary wick is rapidly vaporized, vapor flows to the other end under the power of heat diffusion and releases heat, and the liquid flows back to the heated end along the capillary wick by capillary action, so that the circulation is not stopped until the temperatures of the two ends of the heat pipe 22 are equal.

In an embodiment, an arc-shaped heat absorption end surface 2211 is arranged on one side of the tube shell 221 facing the heat source element 200, the arc-shaped heat absorption end surface 2211 protrudes towards the explosion-proof heat dissipation case 1, and the arc-shaped heat absorption end surface 2211 enables a contact area between the heat pipe 22 and the cooling base 2 to be increased, so that heat of the cooling base 2 can be transferred to the heat pipe 22 with maximum efficiency. The tube shell 221 is arranged at the position, close to the lower middle part, in the cooling base 2, and the distance of heat transfer can be shortened by the fact that the tube shell 221 is close to the explosion-proof radiating shell 1, and the heat transfer efficiency is improved.

Specifically, the cooling base 2 may be made of a metal material with a relatively high thermal conductivity, in an embodiment, the cooling base 2 is made of an aluminum material, the shape of the cooling base 2 is first machined, then a channel for sealing the structure of the heat pipe 22 is machined in the cooling base 2, and after the channel is machined, the channel is sealed by aluminum welding. Drilling a hole with the diameter of 6mm at the welding part, welding an aluminum pipe with the diameter of 6mm × 1mm in the hole, connecting the aluminum pipe with a tee joint, connecting one end of the tee joint with a vacuum pump, connecting one end of the tee joint with high-purity nitrogen, and performing replacement cleaning in a mode of repeatedly vacuumizing and flushing nitrogen until no steam remains in the pipe shell 221. After the heat pipe 22 is replaced and cleaned, vacuum pumping is carried out again to ensure that the vacuum degree reaches 5 x 10 ^-5 Then, a heat dissipation medium, such as distilled water, ammonia, methanol, or acetone, is filled in the tube shell 221 through a tube. After the heat dissipation medium is filled, the clamp is used for clamping the outlet of the tube shell 221, the tube shell 221 is clamped flatly and deformed and sealed in a pressure applying mode, the deformed part is welded and sealed in an aluminum welding mode, the clamp is loosened, and the cooling base 2 is manufactured.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The flame-proof cooling device is characterized in that the flame-proof cooling device (100) comprises:

the explosion-proof radiating shell (1) is provided with a sealed cavity (11) for accommodating a heat source piece (200);

the cooling base (2) is accommodated in the sealed cavity (11), the cooling base (2) comprises a heat conduction shell (21) and a heat pipe (22) sealed in the heat conduction shell (21), the heat conduction shell (21) is supported between the heat source piece (200) and the explosion-proof radiating shell (1), and the heat pipe (22) is used for transferring heat generated by the heat source piece (200) to the explosion-proof radiating shell (1) through the heat conduction shell (21).

2. The flameproof cooling device according to claim 1, wherein the heat conducting shell (21) is recessed towards the flameproof heat dissipation case (1) to form an accommodating groove (23), and the heat source element (200) is clamped in the accommodating groove (23) and is in surface contact with the heat conducting shell (21).

3. The flameproof cooling device of claim 2, wherein the flameproof cooling device (100) further comprises a pressing cover (3), and the pressing cover (3) is used for pressing the heat source element (200) in the accommodating groove (23).

4. The flameproof cooling device according to claim 3, wherein the compression cover (3) is provided with a clamping groove (31) for clamping with the heat source element (200), and the clamping groove (31) and the accommodating groove (23) are matched to form an installation cavity (4) for surrounding and adhering to the outer surface of the heat source element (200).

5. The flameproof cooling device according to claim 4, wherein a sealing layer (32) covers the inner wall of the clamping groove (31), and the sealing layer (32) is used for enabling the heat source element (200) to be tightly attached to the compression cover (3).

6. The flameproof cooling device of any of claims 2 to 5, characterized in that the walls of the accommodating groove (23) are covered with a heat conducting layer (24);

and/or the presence of a gas in the gas,

the heat conducting shell (21) faces to the heat radiating end face (213) of the explosion-proof heat radiating shell (1) and is covered with a heat radiating layer (25).

7. Flame-proof cooling device according to any of claims 2 to 5, characterized in that the heat conducting housing (21) comprises:

the heat conduction bracket (211), the holding groove (23) is arranged on the heat conduction bracket (211);

two engaging lugs (212) are arranged on two sides of the heat-conducting support (211) respectively, the engaging lugs (212) are used for connecting the heat-conducting shell (21) and the explosion-proof radiating shell (1), and the height of the heat-conducting support (211) is larger than that of the engaging lugs (212).

8. Flame-proof cooling device according to any of claims 1 to 5, characterized in that the heat pipe (22) comprises:

a tube shell (221) which is hermetically filled with a heat dissipation medium for volatilization and heat dissipation;

and the capillary wick is arranged on the inner tube surface of the tube shell (221) and is used for guiding the heat dissipation medium to flow back.

9. The flameproof cooling device according to claim 8, wherein an arc-shaped heat absorption end surface (2211) is arranged on one side of the tube shell (221) facing the heat source element (200), and the arc-shaped heat absorption end surface (2211) protrudes towards the flameproof heat dissipation case (1).

10. A flameproof cooling device according to claim 8, characterized in that the tube shell (221) is located inside the heat conducting shell (21) close to the flameproof heat sink enclosure (1).

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