Air bag heat preservation system

Abstract

The utility model relates to the field of air bag heat preservation, in particular to an air bag heat preservation system which comprises an air bag body wrapped outside a heat-preserved body, and the air bag body at least comprises an outer side bag portion away from the heat-preserved body and an inner side bag portion close to the heat-preserved body. The outer side bag part is a heat preservation body, or the outer side bag part is provided with a heat preservation body and / or coated with a heat preservation coating. Through the design of the invention, the problem of temperature rise caused by radiation heat transfer, heat conduction and convection conduction is solved. A reflection or radiation refrigeration coating or film is additionally arranged for radiant heat to form a radiation blocking layer for greatly reducing radiation heat conduction of the sun and the ground; secondly, the air bag heat insulation layer is formed by the inflatable air bag, air or carbon dioxide or other gas can be applied, and the low-cost efficient heat insulation effect is achieved; and thirdly, the inner wall body and / or the outer wall body of the grain depot are / is covered with an airtight film, and convection heat exchange of cold and hot air inside and outside caused by the air tightness problem generated by cracks caused by sedimentation factors is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air bag heat preservation, and specifically relates to an air bag heat preservation system. BACKGROUND

[0002] With the social progress, the high-quality development of grain industry, the requirement of grain reserve changes from the previous "store down" to "store well". In addition to meeting the mechanical structure of "store down", the granary for grain reserve begins to pursue the realization of "store well" heat preservation performance. The low temperature and constant low temperature storage of stored grain can maximize the preservation of grain quality and reduce grain deterioration, which is the requirement of green storage. The existing granary is provided with a cooling device for cooling the inside of the granary. Therefore, without considering the heat production of the grain itself, the heat source of the granary mainly comes from the outside, mainly the solar radiation heat received from the top surface and the surrounding wall surface of the granary, the ground radiation heat of the surrounding ground and the heat conduction of the surrounding air. Of course, from the system, the ground of the granary also has the import of ground heat, and due to the small temperature difference, it can be regarded as a non-main heat source. Therefore, reducing the radiation heat conduction of the sun and the surrounding ground and the air heat conduction, thereby reducing the temperature rise rate of the stored grain, is an important technology of green grain storage.

[0003] In the storage of such a large weight of material as grain storage, the problem of air tightness is a serious problem. Due to the large weight of the stored material, the mechanical enclosure system will cause foundation settlement and rebound recovery due to bearing and unloading. In this process, the uneven settlement and rebound recovery of the enclosure system will cause the generation of cracks in the enclosure system, resulting in problems of air tightness. The occurrence of air tightness leads to the difference in air pressure caused by the temperature difference between the inside and outside of the enclosure system, so that the hot air outside is pressed into the interior of the granary, and convection heat is generated. At the same time, the buoyancy effect caused by the temperature difference will cause the continuous increase of the pressure of the hot air in the upper part of the granary, and the cold air in the lower part will be continuously discharged from the lower part of the granary due to the increase of the pressure, so as to form the internal and external heat exchange cycle.

[0004] There are also air bags outside the grain depot to keep warm, and air film warehouses are directly manufactured by the principle of air bag heat insulation, such as the air film warehouse disclosed in application number "CN201821862991.4", which comprises a warehouse wall and an air film body arranged on the warehouse wall. At least one communication port is formed in the warehouse wall, and a feeding hopper is arranged in the warehouse wall. The top of the feeding hopper is provided with a feeding port, and the bottom of the feeding hopper is provided with a discharging pipe which extends out of the warehouse wall through the communication port. The discharging pipe is provided with an opening and closing valve for discharging. The technology only solves the problem of low transportation efficiency of the air bag inlet and outlet. During the use of the air bag, due to long-term contact with the outside world, especially in high temperature or low temperature, the gas in the air bag is also heated or reduced for a long time, so that the actual temperature in the air bag is very high or low in actual application, and the heat insulation effect is not good, which is also the real situation feedback in actual application. After the existing air bag is arranged outside the grain depot, the surface of the grain depot is continuously high temperature in high temperature, so that the refrigeration system in the grain depot works beyond expectation, resulting in increased energy consumption. Therefore, it is necessary to design a real air bag heat preservation system which can play a heat preservation and heat insulation effect and reduce energy consumption. Practical new type content

[0005] The purpose of the present utility model is to solve the above problems, and a kind of air bag heat preservation system is provided.

[0006] To achieve the above object, the present utility model provides the following technical scheme:

[0007] An air bag heat preservation system, comprising an air bag main body wrapped outside a body to be kept warm, the air bag main body at least comprising an outer side bag part away from the body to be kept warm and an inner side bag part close to the body to be kept warm;The outer side bag part is a heat preservation body, or the outer side bag part is provided with a heat preservation body and / or coated with a heat preservation coating, or the inner side bag part is provided with a heat preservation body and / or coated with a heat preservation coating;The heat preservation body is any one or any two combinations or all three combinations of heat preservation plate, heat preservation cloth and heat preservation film.

[0008] As a preferred, the heat preservation film is attached to the inner or outer surface of the outer side bag part.

[0009] As a preferred, the heat preservation coating is a reflective coating layer or a radiation refrigeration coating layer or an absorption radiation coating layer.

[0010] As a preferred, the heat preservation film is a reflective film or a radiation refrigeration film absorption radiation film.

[0011] As a preferred, the outer side bag part and the heat preservation body are attached or edge sealed.

[0012] As a preferred, a support body is further arranged outside the air bag main body for structural support of the air bag.

[0013] As preferred, a convection port is formed on the air bag body, and a closeable air bag door for sealing the convection port is arranged on the air bag body.

[0014] As preferred, a heat exchange device for exchanging heat of the gas in the air bag cavity of the air bag body is further connected to the air bag body.

[0015] As preferred, a bottom air bag part is arranged at the bottom of the air bag body, and an inner side air bag part is arranged on the surface of the heat-insulated body, or the inner end of the bottom air bag part is sealingly connected to the heat-insulated body.

[0016] As preferred, a gas-proof film is arranged between the heat-insulated body and the air bag body, and the gas-proof film is attached to the outer surface of the heat-insulated body.

[0017] As preferred, a spreading part is sealingly connected to the bottom of the gas-proof film, and the spreading part extends from the inside to the outside of the air bag body and is attached to the ground outside the heat-insulated body.

[0018] As preferred, the outer side air bag part includes a top air bag part and a side air bag part, and the side air bag part is gradually inclined outward relative to the heat-insulated body from top to bottom.

[0019] As preferred, a one-way air pressure valve is arranged on the air bag body.

[0020] As preferred, a detachable heat absorbing layer is arranged outside the air bag body when the heat-insulated body needs to absorb heat.

[0021] As preferred, the air bag body is filled with air or carbon dioxide gas.

[0022] Advantages:

[0023] 1. The design of the present application solves the problem of temperature rise caused by radiation heat transfer, heat conduction and convection. The present application adds a reflective or radiative refrigeration coating or film to form a radiation barrier layer that greatly reduces solar and ground radiation heat conduction. Or a radiation heat absorption enhancement layer is arranged on the inner wall of the air bag to form a radiation receiving layer that greatly increases solar and ground radiation heat conduction. Secondly, the air bag heat insulation layer composed of an inflatable air bag can use air or carbon dioxide gas to produce a low-cost and high-efficiency heat insulation effect. Thirdly, the method of covering the air-tight film on the inner and / or outer wall of the grain storehouse can block the air-tightness problem caused by the cracks caused by the settlement factor, thereby preventing the convection heat exchange between the cold and hot gases inside and outside. It can be seen that the present application blocks heat radiation, convection and conduction, and has good cost performance.

[0024] 2. The present application has simple structure, convenient disassembly and maintenance, low cost and high strength. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present application;

[0026] Figure 2 It is a structural schematic diagram of the present application;

[0027] Figure 3 It is a structural schematic diagram of the present application;

[0028] Figure 4 It is a structural schematic diagram of the present application;

[0029] Figure 5 It is a structural schematic diagram of the present application;

[0030] Figure 6 It is a structural schematic diagram of the present application;

[0031] Figure 7 It is a structural schematic diagram of the present application;

[0032] Figure 8 It is a structural schematic diagram of the present application; DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be described in further detail. The present application will be further described in combination with the drawings.

[0034] Example one:

[0035] An air bag heat preservation system comprises an air bag body 1 wrapped outside a heat preserved body 2, the air bag body comprising at least an outer side bag part 11 away from the heat preserved body and an inner side bag part 14 close to the heat preserved body; the outer side bag part is a heat preserved body, or the outer side bag part is provided with a heat preserved body 113 and / or coated with a heat preserved coating 114, or the inner side bag part is provided with a heat preserved body 113 and / or coated with a heat preserved coating; that is, the outer side bag part itself can be a heat preserved body, or the outer side bag part can be provided with a layer of heat preserved body, or the outer side bag part is coated with a layer of heat preserved coating, or both the heat preserved body and the heat preserved coating are provided, and the heat preserved coating can also be provided on the inner side bag part. The heat preserved body can further insulate heat, and the heat preserved coating can be a reflective coating layer or a radiation cooling coating layer, and the heat preserved film can be directly selected as a reflective film or a radiation cooling film, which not only has a certain heat insulation effect, but also can radiate and / or reflect heat, so that the additional radiation cooling coating or film forms a radiation barrier layer that greatly reduces the conduction of solar and ground radiation heat, thereby reducing the temperature of the surface of the outer side bag part and achieving the purpose of reducing the transmission of external heat.

[0036] The heat preserved body is any one of a heat preserved plate 113-1, a heat preserved cloth 113-2 and a heat preserved film 113-3, or a combination of any two or all of them. For example, the heat preserved body is any one of the above, and a heat preserved coating can be coated outside the heat preserved body; for example, a heat preserved film is further attached outside the heat preserved cloth, and a heat preserved coating can be further coated outside the heat preserved film; or the heat preserved plate, the heat preserved cloth and the heat preserved film are all selected layer by layer, for example, a heat preserved cloth is attached outside or inside a heat preserved plate, and a heat preserved film is attached to the outermost or innermost layer, which can be directly a reflective film or a radiation cooling film, or a heat preserved coating is coated on the outermost layer.

[0037] A heat preserved coating such as a reflective radiation cooling coating is coated on the outer side of the air bag body, or a heat preserved body is added, or the outer side bag part itself is a reflective coating layer or a radiation cooling coating layer, so that the surface temperature of the air bag body is greatly reduced to reduce the heat transfer of light or other heat sources to the heat preserved body.

[0038] In a low-temperature warehouse heat preservation system, how to reduce the thermal conductivity of the heat preservation layer is an important aspect. In the design, the air bag with low thermal conductivity and low cost is used for air layer heat insulation, which is an important measure.

[0039] When the heat preserved body of the present application needs to absorb heat and rise in temperature, the heat preserved coating or film of the present application can be selected as an absorption radiation coating layer or coating film, so as to absorb the heat of the outside world to heat the heat preserved body. A radiation heat absorption enhancement layer is added to the inner wall of the air bag to form a radiation receiving layer that greatly increases the conduction of solar and ground radiation heat.

[0040] Secondly, because in low temperature storage, most of the heat preservation body is exposed to the natural state, solar radiation and air temperature are the main heat source for the heat preservation body. Therefore, using a heat preservation outer layer that can radiate and reflect heat is an important means to reduce the temperature of the outer surface of the heat preservation system and reduce the amount of external heat entering.

[0041] Example two:

[0042] The difference between the above examples is that the heat preservation film is attached to the inner or outer surface of the outer capsule. For example, the heat preservation film is selected from a reflective film with reflective function, such as an aluminum foil film. The aluminum foil film can be placed on the inner side of the outer capsule, and as long as the outer capsule is a transparent material, the aluminum foil film can also be placed on the inner surface of the outer capsule.

[0043] Example three:

[0044] The difference between the above examples is that the outer capsule is attached to or edge-sealed to the heat preservation body. The outer capsule and the heat preservation body can be tightly attached or edge-sealed, as long as there is no space between the outer capsule and the heat preservation body that can be convected with the external air, so as to reduce the influence of air convection on the heat preservation effect of the air bag main body.

[0045] Example four:

[0046] The difference between the above examples is that the air bag main body is further provided with a support body 3 for structurally supporting the air bag. For example, the support body is a steel frame structure, which is combined with the air bag main body to not only protect and support the air bag main body, but also make the air bag main body form a regular capsule cavity to facilitate management, save space, and make the thickness of the air bag main body relative to each position of the heat preservation body uniform to ensure the heat insulation effect.

[0047] Example five:

[0048] The difference between the above examples is that a convection port 12 is provided on the air bag main body, and a closable air bag door 121 for sealing the port is provided on the air bag main body corresponding to the convection port. The heat preservation body will have doors, windows, air vents and other openings. For these positions that must be opened, a convection port is provided on the air bag main body, and an air bag door that can be closed is additionally provided on the convection port, thereby effectively preventing unnecessary convection between the heat preservation body and the outside through the doors, windows, air vents, etc. The air bag door is a general term for air bag doors, air bag windows and air bag hole covers corresponding to the opening positions of the doors, windows, air vents, etc. of the heat preservation body. The air bag door is not connected to the air bag main body, but has a connection relationship that can be opened and closed. When the air bag door is closed, the air bag door and the air bag main body are in interference fit, thereby achieving the effect of sealing. The above design can maintain the overall heat preservation system without damaging the sealing performance of the heat preservation system, especially the air bag main body, and can facilitate the entry and exit of people and materials from the heat preservation body.

[0049] Example six:

[0050] The difference between the above embodiment and the present embodiment is that the air bag body is further connected with a heat exchange device 4 for exchanging heat of the gas in the air bag cavity. The heat exchange device such as a refrigeration device can be installed in the air bag to cool the gas in the air bag. The refrigeration device can be installed outside the air bag and then the air exchange pipe is inserted into the air bag.

[0051] Example seven:

[0052] The difference between the above embodiment and the present embodiment is that the air bag body further comprises a bottom bag part 13 at the bottom, the inner end of the bottom bag part is connected with an inner bag part 14 covering the surface of the heat-insulated body or the inner end of the bottom bag part is sealingly connected with the heat-insulated body. The inner bag part of the present application can be made of the same material as the outer bag part of the air bag body, or the outer surface of the heat-insulated body can be directly used as the inner bag part, as long as the sealing connection between the bottom bag part and the heat-insulated body and the sealing of the outer surface of the heat-insulated body can ensure the sealing of the air bag cavity of the air bag body.

[0053] In addition, when the inner bag part with good sealing covers the outer wall of the heat-insulated body, the convection heat exchange of the cold and hot gases inside and outside caused by the air tightness problem of the cracks caused by the settlement factor can be blocked.

[0054] Example eight:

[0055] The difference between the above embodiment and the present embodiment is that a gas-impermeable film 7 is arranged between the outer surface of the heat-insulated body and the air bag body, and the gas-impermeable film is attached to the outer surface of the heat-insulated body. The gas-impermeable film can be directly the inner bag part of the air bag body, or it can be a gas-impermeable film arranged between the inner bag part of the air bag body and the heat-insulated body. The method of covering the gas-impermeable film on the outer and / or inner wall of the heat-insulated body is more preferable, and as described above, the gas-impermeable film is arranged on the outer surface of the heat-insulated body, which can effectively block the convection heat exchange of the cold and hot gases inside and outside caused by the air tightness problem of the cracks caused by the settlement factor.

[0056] Example nine:

[0057] The difference between the above embodiment and the present embodiment is that the gas-impermeable film is sealingly connected with an extension part 15 at the bottom, the extension part extends from the inside to the outside of the air bag body and is attached to the outer ground of the heat-insulated body and is attached to the ground. After the extension part extends outwardly and is attached to the ground and is as sealingly attached as possible, the air tightness of the heat-insulated body is enhanced, and when the whole system has cracks or the heat-insulated body has cracks due to settlement or other reasons, the air tightness problem is caused, and the convection heat exchange of the cold and hot gases inside and outside caused by the air tightness problem of the cracks caused by the settlement factor can be effectively blocked, and the effective work of the heat-insulated system is ensured.

[0058] Example ten:

[0059] The difference between the above embodiment and the present embodiment is that the outer capsule part comprises a top capsule part 111 and a side capsule part 112, and the side capsule part is gradually inclined outward relative to the heat-insulated body from top to bottom. By the inclined arrangement of the side capsule part, most of the heat source can be reflected or radiated upward, ensuring that the heat is dissipated or reflected out, so that the heat is not easy to gather at the edge of the air bag main body. Especially when multiple air bag heat insulation systems are arranged in sequence, the side capsule part needs to be inclined to prevent the side capsule parts of adjacent air bag main bodies from reflecting or radiating each other, causing the heat between them to be unable to dissipate, thereby causing the heat to accumulate between adjacent heat-insulated bodies.

[0060] Embodiment eleven:

[0061] The difference between the above embodiment and the present embodiment is that the air bag main body is provided with an air pressure one-way valve 5. The air pressure one-way valve is arranged to control the air pressure in the capsule, and can be connected to an air pump.

[0062] Embodiment twelve:

[0063] The difference between the above embodiment and the present embodiment is that a detachable heat-absorbing layer 6 can be arranged outside the air bag main body when the heat-insulated body needs to absorb heat. The design of the present application is not limited to application in a granary that needs to be kept at low temperature only. It can also be applied to an agricultural breeding greenhouse. When the heat-insulated body is a breeding greenhouse, the heat-insulation coating applied can be a reflective radiation refrigeration material with reduced heat radiation at low temperature, so as to prevent the heat in the greenhouse from being too high at high temperature, and to keep the greenhouse warm at low temperature due to the reduced heat radiation. Of course, a heat-absorbing layer can also be added at low temperature to keep the greenhouse warm, and the heat-absorbing coating layer or heat-absorbing coating film can also be selected in combination with the above heat-insulation coating or heat-insulation film.

[0064] Especially for aquaculture greenhouses, in addition to considering the inflow of external heat sources in high-temperature seasons, the heat loss in winter and the increase of external temperature as much as possible also need to be considered. The radiation reflection layer on the surface will enhance the loss of external temperature. Therefore, for agricultural breeding greenhouses, especially for aquaculture greenhouses, a heat-absorbing material should be added outside in the low-temperature season to block the reflection of sunlight and play a heat-absorbing role. At the same time, the radiation material used controls its infrared emissivity at 15 degrees or a certain low temperature value to retain as much heat as possible.

[0065] Embodiment thirteen:

[0066] The difference between the above embodiment and the present embodiment is that the air bag main body is filled with air or carbon dioxide gas. The above two gases are gases that are easy to obtain, have low cost and small thermal conductivity. Therefore, the cost can be reduced while the heat insulation performance is guaranteed.

[0067] Lowering the temperature rise rate of the stored grain from the perspective of thermodynamics, the main measures are considered from three aspects: namely, reducing the temperature rise rate of the warehouse mechanical insulation system caused by radiation heat transfer, reducing the heat conduction rate of the warehouse mechanical insulation system, and reducing the heat convection conduction rate caused by the air convection conduction caused by the poor sealing of the warehouse insulation system.

[0068] The above structure design solves the problems of temperature rise caused by radiation heat transfer, heat conduction and convection conduction. Respectively, for the radiation heat, the application adds a reflective or radiation refrigeration coating or film, which constitutes a radiation barrier layer that greatly reduces solar and ground radiation heat conduction; secondly, the air bag heat insulation layer composed of inflatable air bags can use air or carbon dioxide gas to produce a low-cost and high-efficiency heat insulation effect; thirdly, the method of covering the air-tight film on the inner and / or outer walls of the grain depot, which can block the air-tightness problem caused by the cracks caused by the settlement factor, and the convection heat transfer of the internal and external cold and hot gases. It can be seen that the application blocks the radiation, convection and conduction of heat from three aspects, and has good cost performance.

[0069] Although the present application has been described with reference to the embodiments above, various improvements can be made and equivalent parts can be substituted without departing from the scope of the present application. In particular, as long as there is no structural conflict, the features in the disclosed embodiments of the present application can be combined with each other in any way, and the combinations are not exhaustively described in the specification only for the purpose of saving space and resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An air bag thermal protection system characterized by: The air bag body (1) is covered outside the heat-insulated body (2), and the air bag body at least comprises an outer side bag part (11) away from the heat-insulated body and an inner side bag part (14) close to the heat-insulated body; the outer side bag part is the heat-insulated body, or the outer side bag part is provided with a heat-insulated body (113) and / or coated with a heat-insulated coating (114), or the inner side bag part is provided with a heat-insulated body (113) and / or coated with a heat-insulated coating; the heat-insulated body is any one of a heat-insulated plate (113-1), a heat-insulated cloth (113-2) and a heat-insulated film (113-3), or a combination of any two or all of the three.

2. The air cell thermal system of claim 1, wherein: The heat-insulated film is attached to the inner or outer surface of the outer side bag part.

3. The air cell thermal system of claim 1, wherein: The heat-insulated coating is a reflective coating layer or a radiation refrigeration coating layer or an absorption radiation layer.

4. The air cell thermal system of claim 1, wherein: The heat-insulated film is a reflective film or a radiation refrigeration film or an absorption radiation layer.

5. The air cell thermal system of claim 1, wherein: The outer side bag part is connected with the heat-insulated body by edge sealing.

6. The air cushion insulation system of claim 1, wherein: The air bag body is further provided with a support body (3) for structural support of the air bag.

7. The air cushion insulation system of claim 1, wherein: The air bag body is provided with a flow port (12), and the air bag body is provided with an air bag door (121) corresponding to the flow port.

8. The air cushion insulation system of claim 1, wherein: The air bag body is further connected with a heat exchange device (4) for heat exchange of the gas in the bag cavity of the air bag body.

9. The air cushion insulation system of claim 1, wherein: The air bag body further comprises a bottom bag part (13) at the bottom, and the inner end of the bottom bag part is connected with the inner side bag part (14) attached to the surface of the heat-insulated body or the inner end of the bottom bag part is sealingly connected with the heat-insulated body.

10. The air cell thermal system of claim 1, wherein: An air-tight film (7) is arranged between the heat-insulated body and the air bag body, and the air-tight film is attached to the outer surface of the heat-insulated body.

11. The air cell thermal system of claim 10, wherein: The air-tight film is sealingly connected with an extension part (15) at the bottom, and the extension part extends from the inside to the outside of the air bag body and is laid on and attached to the ground outside the heat-insulated body.

12. The air cell thermal system of claim 8, wherein: The outer side bag part comprises a top bag part (111) and a side bag part (112), and the side bag part is gradually inclined outward relative to the heat-insulated body from top to bottom.

13. The air cushion insulation system of claim 1, wherein: The air bag body is provided with a one-way air pressure valve (5).

14. The air cushion insulation system of claim 1, wherein: When the heat-insulated body needs to absorb heat, a detachable heat-absorbing layer (6) can be arranged outside the air bag body.

15. The air cushion insulation system of claim 1, wherein: The air bag body is filled with air or carbon dioxide gas.

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