Collector with heat collecting tube insulation device

Abstract

The present application discloses a heat collector with a heat collecting tube insulation device, comprising a heat collecting tube, a heat collecting tube support frame, a curved reflector, and a heat insulating device for insulating the heat collecting tube. The heat insulating device comprises a guide rail assembly mounted on the heat collecting tube support frame and a heat insulating tube movably disposed on the guide rail assembly. The reflector comprises a heat collecting position and a heat insulating position. When the reflector is in the heat insulating position, the heat collecting tube is located below the reflector, the heat insulating tube is located at a first end of the guide rail assembly under the action of gravity, and the heat collecting tube is accommodated within the heat insulating tube. When the reflector is in the heat collecting position, the heat collecting tube is located above the reflector, the heat insulating tube is located at a second end of the guide rail assembly under the action of gravity, and the heat collecting tube is located outside the heat insulating tube. The present application can protect the temperature of the heat collecting tube at night or on rainy days when the sun is out, thereby significantly reducing heat loss from the heat collecting tube.

Description

Technical Field

[0001] The present application relates to the technical field of heat collectors, and in particular to a heat collector with a heat collecting tube insulation device. Background Art

[0002] A solar thermal collector utilizes a parabolic reflector to focus solar radiation onto a collector tube, collecting the concentrated solar energy and heating the working fluid flowing through the tube, generating a high-temperature medium. A trough solar thermal collector generally consists of a collector tube, a reflector, a support system, and a tracking device. The reflector is formed from a parabolic reflective material, and the collector tube is positioned on the focal line of the parabola. The tracking device ensures that the normal to the reflector's optical center, the collector tube, and the sun are aligned.

[0003] Currently, this type of collector uses a vacuum layer between the metal tube at the back of the collector and the outer glass tube to reduce heat loss in the collector. However, at night, the working fluid in the collector continues to flow and transfer heat outward, resulting in heat loss. Summary of the Invention

[0004] The technical problem to be solved by the present application is to provide an improved heat collector with a heat collecting tube insulation device.

[0005] The technical solution adopted by this application to solve its technical problems is:

[0006] A heat collector with a heat collecting tube insulation device is constructed, comprising: a heat collecting tube, a heat collecting tube support frame, and a curved reflector. The heat collecting tube is arranged at an end of the heat collecting tube support frame away from the reflector, is spaced apart from the concave side of the reflector by the heat collecting tube support frame, and rotates synchronously with the reflector; and further comprises a heat insulation device for insulating the heat collecting tube, the heat insulation device comprising:

[0007] A guide rail assembly mounted on the heat collecting tube support frame and a heat preservation tube movably arranged on the guide rail assembly;

[0008] Wherein, the reflector includes a heat collection position and a heat preservation position;

[0009] When the reflector is in the heat preservation position, the heat collecting tube is located below the reflector, the heat preservation tube is located at the first end of the guide rail assembly under the action of gravity, and the heat collecting tube is accommodated in the heat preservation tube;

[0010] When the reflector is in the heat collection position, the heat collection tube is located above the reflector, the insulation tube is located at the second end of the guide rail assembly under the action of gravity, and the heat collection tube is located outside the insulation tube.

[0011] In some embodiments, the thermal insulation pipe includes a first thermal insulation member and a second thermal insulation member; the first thermal insulation member and the second thermal insulation member are both in the shape of curved plates and are movably disposed on the guide rail assembly;

[0012] When the reflector is in the heat-insulating position, the first heat-insulating member and the second heat-insulating member are combined into a hollow tubular structure to accommodate the heat collecting tube;

[0013] When the reflector is in the heat collecting position, the first heat-insulating component is spaced apart from at least one side of the second heat-insulating component.

[0014] In some embodiments, the first side of the first thermal insulation component is rotatably connected to the first side of the second thermal insulation component, and the second side of the first thermal insulation component and the second side of the second thermal insulation component are movably disposed on the guide rail assembly.

[0015] In some embodiments, the insulation tube also includes a first elastic connector, a second elastic connector, a first sliding member and a second sliding member; one end of the first elastic connector is connected to the second side of the first insulation member, and the other end is movably set on the guide rail assembly through the first sliding member; one end of the second elastic connector is connected to the second side of the second insulation member, and the other end is movably set on the guide rail assembly through the second sliding member.

[0016] In some embodiments, the first thermal insulation component and the second thermal insulation component both include thermal insulation cotton and a hollow waterproof shell, and the thermal insulation cotton is arranged in the waterproof shell.

[0017] In some embodiments, at least part of the guide rail assemblies are respectively disposed on opposite sides of the heat collecting tube support frame.

[0018] In some embodiments, the guide rail assembly includes a first guide rail and a second guide rail respectively installed on opposite sides of the heat collecting tube support frame; the first thermal insulation component is movably connected to the first guide rail, and the second thermal insulation component is movably connected to the second guide rail.

[0019] In some embodiments, the first end of the first guide rail and the first end of the second guide rail are located on the side of the heat collecting tube away from the heat collecting tube support frame; the second end of the first guide rail and the second end of the second guide rail are located between the heat collecting tube and the reflector.

[0020] In some embodiments, in the extension direction of the heat collecting tube support frame, the second end of the second guide rail is located between the second end of the first guide rail and the heat collecting tube.

[0021] In some embodiments, the first guide rail includes a first main body and a first inclined section, and the second guide rail includes a second main body and a second inclined section; the first main body and the second main body are arranged in a longitudinal direction, and the axes of the two are parallel and spaced apart; the first inclined section is arranged at the second end of the first main body and is inclined toward the direction close to the second guide rail; the second inclined section is arranged at the first end of the second main body and is inclined toward the direction close to the first guide rail.

[0022] The implementation of this application will have at least the following beneficial effects:

[0023] By providing a heat preservation device, the present application can protect the temperature of the heat collecting tube when there is no sun, such as at night or on rainy days, thereby greatly reducing heat loss from the heat collecting tube. By configuring the heat preservation tube to automatically move along the guide rail assembly under the action of gravity, the present application enables the heat collector to automatically achieve movement of the heat preservation tube along the guide rail assembly while automatically tracking the sun. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 This is a schematic structural diagram of a heat collector with a heat collecting tube insulation device according to an embodiment of the present application;

[0026] Figure 2 yes Figure 1 A schematic structural diagram of a portion of the heat collector with a heat collecting tube insulation device shown at another angle;

[0027] Figure 3 yes Figure 1 The schematic diagram of the partial structure of the heat collector with the heat collecting tube insulation device when the tracking device is at 0° is shown;

[0028] Figure 4 yes Figure 1 Schematic diagram of the state of the heat collecting tube and the heat preservation device in one of the heat collecting positions;

[0029] Figure 5 yes Figure 1 Schematic diagram of the state of the heat collecting tube and the heat preservation device in one of the heat preservation positions;

[0030] Figure 6 yes Figure 4 Schematic diagram of the structure of the first insulation component. DETAILED DESCRIPTION

[0031] In order to provide a clearer understanding of the technical features, objectives, and effects of the present application, specific embodiments of the present application are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front," "back," "up," "down," "left," "right," "vertical," "horizontal," "bottom," "inside," "inside," and "outside" are based on the directions or positional relationships shown in some of the accompanying drawings and are constructed and operated in specific directions. They are merely for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limitations on the present application.

[0032] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0033] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0034] like Figure 1 As shown, the present application constructs a heat collector 1 with a heat collecting tube heat preservation device, which can collect solar energy. The heat collector 1 includes a heat preservation device 10, a heat collecting tube 20, a heat collecting tube support frame 30, a reflector 40, a tracking device 50 and a support device 60.

[0035] See also Figure 2, wherein the tracking device 50 is arranged on the supporting device 60 for tracking the sun. The reflector 40 is curved and is arranged on the tracking device 50 for focusing the sun's energy. The heat collecting tube support frame 30 is arranged on the tracking device 50 and extends to the concave side of the reflector 40. The heat collecting tube 20 is arranged at the end of the heat collecting tube support frame 30 away from the reflector 40, and is arranged on the concave side of the reflector 40 through the heat collecting tube support frame 30 to collect the energy focused by the reflector 40. The heat preservation device 10 is installed on the heat collecting tube support frame 30 for keeping the heat collecting tube 20 warm. The heat preservation device 10, the heat collecting tube 20, the heat collecting tube support frame 30 and the reflector 40 can rotate synchronously with the movement of the sun under the drive of the tracking device 50.

[0036] The heat preservation device 10 includes a guide rail assembly 11 and a heat preservation pipe 12. The guide rail assembly 11 is mounted on the heat collecting pipe support frame 30, and the heat preservation pipe 12 is movably arranged on the guide rail assembly 11.

[0037] Driven by the tracking device 50 , the rotation path of the reflector 40 (as well as the heat preservation device 10 , the heat collecting tube 20 , and the heat collecting tube support frame 30 ) may include a heat collecting position and a heat preservation position.

[0038] When the reflector 40 is in the heat preservation position, the heat collecting tube 20 is located below the reflector 40, the heat preservation tube 12 is located at the first end of the guide rail assembly 11 under the action of gravity, and the heat collecting tube 20 is accommodated in the heat preservation tube 12. When the reflector 40 is in the heat collection position, the heat collecting tube 20 is located above the reflector 40, the heat preservation tube 12 is located at the second end of the guide rail assembly 11 under the action of gravity, and the heat collecting tube 20 is located outside the heat preservation tube 12.

[0039] It should be understood that, based on the angle of the heat collector 1 in use, "the heat collecting pipe 20 is located below the reflector 40" can be understood as meaning that when the concave side of the reflector 40 faces away from the sun, the heat collecting pipe 20 can be considered to be located below the reflector 40. "The heat collecting pipe 20 is located above the reflector 40" can be understood as meaning that when the concave side of the reflector 40 faces the sun, the heat collecting pipe 20 can be considered to be located above the reflector 40.

[0040] by Figure 1 and Figure 2 For example, taking the angle of the heat collector 1 in use as a reference, when the heat collecting tube 20 is located between the sun and the tracking device 50 in the height direction, the heat collecting tube 20 can be regarded as being located above the reflector 40 ( Figure 1 and Figure 2 The state shown is one of the states where the heat collecting pipe 20 is located above the reflector 40 . When the heat collecting pipe 20 is located between the tracking device 50 and the ground in the height direction, the heat collecting pipe 20 can be considered to be located below the reflector 40 .

[0041] It should be understood that the heat collection position and the heat preservation position are different for different heat collectors 1. The heat collection position and the heat preservation position are not single fixed positions.

[0042] For example, taking one of the existing heat collectors 1 as an example, the rotation angle of the tracking device 50 is -20° to 180° (wherein, the definition Figure 3 The angle shown is when the collector 1 is at 0°. The heat preservation position of the collector 1 can be at -20 degrees. When the tracking device 50 cannot track the sun, it can be rotated to the -20° position. When the tracking device 50 is rotated to between 45° and 135°, the collector 1 can be considered to be in the heat preservation position.

[0043] In the heat collector 1 in other embodiments, the rotation angle of the tracking device 50 can also be set to other angles such as -30° to 210°. In this case, -30° and 210° can be defined as the heat preservation position of the heat collector 1. The positions between -20° and -30° can also be regarded as the heat preservation position. The positions between 30° and 120° can also be set as the heat collection position. The settings of each heat collector 1 are different, and the ranges of the heat collection position and the heat preservation position are also different. The angle ranges of the heat collection position and the heat preservation position can also be flexibly set, so no specific restrictions are made here.

[0044] The present application provides a heat preservation device 10 to protect the temperature of the heat collecting pipe 20 when there is no sun at night or on rainy days, thereby greatly reducing the heat loss of the heat collecting pipe 20.

[0045] It should be understood that because the tracking device 50 of the collector 1 can track the rotation of the sun, when the sun is not shining, the tracking device 50 can drive the heat collecting tubes 20 to the side of the reflector 40 facing away from the sun (facing the ground). At this time, the heat collecting tube support frame 30 and the guide rail assembly 11 disposed thereon can be tilted downward. When the sun is shining, the tracking device 50 ensures that the concave side of the reflector 40 always faces the sun to focus energy. Therefore, when the sun is shining, the heat collecting tube support frame 30 and the guide rail assembly 11 disposed thereon can be tilted upward.

[0046] The present application provides a guide rail assembly 11 and an insulation tube 12 movably disposed on the guide rail assembly 11, and enables the insulation tube 12 to move back and forth along the guide rail assembly 11 under the action of gravity. During the process of the collector 1 automatically tracking the sun, the insulation tube 12 can automatically move along the guide rail assembly 11 based on the change in gravity and the angle of the guide rail assembly 11 after rotation.

[0047] like Figure 5As shown, when the guide rail assembly 11 is tilted downward (or even vertically), the insulation pipe 12 can move downward along the guide rail assembly 11 under the action of gravity, and then move to the end of the guide rail assembly 11 close to the heat collecting pipe 20, wrapping the heat collecting pipe 20 located at the end of the heat collecting pipe support frame 30. In other words, the heat collecting pipe 20 can be automatically protected under the action of gravity. Figure 4 As shown, when the guide rail assembly 11 is tilted (or even vertically) upward, the insulation pipe 12 can move downward along the guide rail assembly 11 under the action of gravity, releasing the wrapping of the heat collecting pipe 20. In other words, the protection of the heat collecting pipe 20 can be automatically released under the action of gravity.

[0048] This arrangement reduces the investment in manpower and material resources, and avoids the problem of operators forgetting to control the insulation / release of the heat collecting tube 20. This ensures that the heat collecting tube 20 can minimize heat loss while not affecting the heat collecting tube 20's absorption of the energy collected by the reflector 40.

[0049] For example Figure 1 As shown, the number of heat collecting tubes 20 of the heat collector 1 can be at least two. Each heat collecting tube 20 requires at least two heat collecting tube support frames 30 for support, and one heat collecting tube support frame 30 can support one or two heat collecting tubes 20. The number of the insulation tubes 12 can correspond to the heat collecting tubes 20. Each insulation tube 12 can correspond to two guide rail assemblies 11, which are respectively arranged at the two ends of the insulation tube 12. Therefore, when the heat collecting tube support frame 30 supports two heat collecting tubes 20 at the same time, two guide rail assemblies 11 can be arranged on the heat collecting tube support frame 30 at the same time, so as to be respectively arranged corresponding to the ends of the two heat collecting tubes 20.

[0050] like Figure 4 and Figure 5 As shown, in some embodiments, the insulation pipe 12 includes a first insulation member 121 and a second insulation member 122. The first insulation member 121 and the second insulation member 122 are both in the shape of curved plates and are movably disposed on the guide rail assembly 11.

[0051] like Figure 5 As shown, when the reflector 40 is in the heat preservation position, the first heat preservation member 121 and the second heat preservation member 122 are combined into a hollow tubular structure to accommodate the heat collecting tube 20. Figure 4 As shown, when the reflector 40 is in the heat collecting position, at least one side of the first heat insulation component 121 and the second heat insulation component 122 are spaced apart.

[0052] By configuring the first thermal insulation component 121 and the second thermal insulation component 122 as arc-shaped plate structures, the first thermal insulation component 121 and the second thermal insulation component 122 can be connected and separated by moving them separately on the guide rail assembly 11 .

[0053] When the reflector 40 is in the heat preservation position, the first heat preservation component 121 and the second heat preservation component 122 can be respectively moved to the first end of the guide rail assembly 11 under the action of gravity. At the first end of the guide rail assembly 11, the two arc-shaped plate-like structures are docked to form a hollow tubular structure, and the two are docked to accommodate the heat collecting pipe 20. When the reflector 40 is in the heat collection position, the first heat preservation component 121 and the second heat preservation component 122 can be respectively moved to the second end of the guide rail assembly 11 under the action of gravity. At the second end of the guide rail assembly 11, the two arc-shaped plate-like structures are spaced apart on at least one side. The heat collecting pipe 20 can be relatively moved out on one side through the spacing between the two to achieve the release of protection.

[0054] It should be understood that, when the insulation tube 12 is located at the second end of the guide rail assembly 11, the heat collecting tube 20 has already escaped from the insulation tube 12. Therefore, in some other optional embodiments, when the reflector 40 is in the heat collecting position, at least one side of the first insulation component 121 and the second insulation component 122 may not be spaced apart from each other. It can only ensure that in the process of the insulation tube 12 moving from the first end to the second end of the guide rail assembly 11, there is a stage in which at least one side of the first insulation component 121 and the second insulation component 122 are spaced apart from each other, so as to achieve the escape of the heat collecting tube 20. After the heat collecting tube 20 escapes, the positional relationship between the first insulation component 121 and the second insulation component 122 may not be limited.

[0055] In this embodiment, the first side of the first heat-insulating member 121 is rotatably connected to the first side of the second heat-insulating member 122. The second side of the first heat-insulating member 121 and the second side of the second heat-insulating member 122 are movably disposed on the guide rail assembly 11.

[0056] This arrangement allows the insulation pipe 12 to only limit the moving position of one side of the first insulation component 121 and the second insulation component 122 on the guide rail assembly 11 during its movement along the guide rail assembly 11, thereby achieving wrapping and separation of the heat collecting pipe 20.

[0057] For example, when the reflector 40 is in the heat-insulating position, the tubular structure can be formed by controlling the second side of the first heat-insulating member 121 and the second side of the second heat-insulating member 122 to approach each other. As the two sides approach each other, the heat collecting tube 20 can be gradually surrounded. When separation from the heat collecting tube 20 is required, this can be achieved by controlling the second side of the first heat-insulating member 121 and the second side of the second heat-insulating member 122 to separate from each other. The positions of the first side of the first heat-insulating member 121 and the first side of the second heat-insulating member 122 do not need to be considered.

[0058] In some other optional embodiments, the first thermal insulation member 121 and the second thermal insulation member 122 can also be configured as a separate structure. The first side end and the second side end of the first thermal insulation member 121 and the second thermal insulation member 122 can be movably mounted on the guide rail assembly 11, and the positional relationship of the two side ends at the first end and the second end of the guide rail assembly 11 can be controlled respectively, so that the two side ends of the two sides are close to each other at the first end of the guide rail assembly 11 and surround the heat collecting tube 20, and are spaced apart from each other on at least one side of the second end of the guide rail assembly 11 and separated from the heat collecting tube 20.

[0059] In other optional embodiments, the insulation pipe 12 may be provided with only one insulation member. By configuring it as a semi-enclosed structure, it is also possible to surround the heat collecting pipe 20, and the open side of the semi-enclosed structure can be used to separate it from the heat collecting pipe 20. Compared to placing the heat collecting pipe 20 outside the environment, being in the semi-enclosed insulation pipe 12 can also reduce heat loss.

[0060] In this embodiment, the cross-sections of the first heat-insulating component 121 and the second heat-insulating component 122 perpendicular to the length direction are both roughly semicircular. When the two are combined, the cross-sections are roughly hollow ring-shaped, and the whole is roughly tubular.

[0061] In other optional embodiments, the cross-sections of the first heat-insulating member 121 and the second heat-insulating member 122 may also be concave, triangular, polygonal, etc. The shape of the plate-shaped cross-section is such that the two can be roughly tubular after being connected.

[0062] Specifically, the first heat-insulating member 121 and the second heat-insulating member 122 can be configured to have the same structure. The following will be described using the first heat-insulating member 121 as an example. Figure 6 As shown, the first insulation component 121 may include insulation foam 1201 and a waterproof housing 1202. The waterproof housing 1202 is a hollow, curved plate-like shell filled with insulation foam 1201. The waterproof housing 1202 protects the insulation foam 1201 from moisture in rainy or snowy weather. The insulation foam 1201 reduces heat loss from the heat collecting tube 20.

[0063] The waterproof housing 1202 can be made of a high-strength material such as metal (e.g., stainless steel, aluminum, etc.) to provide better support and prevent deformation of the insulation pipe 12 during use. It also has good corrosion resistance to prevent damage to the insulation device 10 from the external environment.

[0064] Reentry Figure 4 and Figure 5As shown, in some embodiments, the insulation tube 12 can also be provided with a rod-shaped rotating part 123, which extends along the length direction of the first insulation part 121 and the second insulation part 122, and is arranged between the first end of the first insulation part 121 and the first end of the second insulation part 122.

[0065] By setting the rotating member 123 to be rod-shaped, the first heat-insulating member 121 and the second heat-insulating member 122 can be rotatably connected, and the supporting strength of the heat-insulating pipe 12 can be further enhanced to avoid deformation.

[0066] Specifically, the rotating member 123 can be selected from various rotating connection structures such as hinges, rotating shafts, hinges, etc., and no specific limitation is made here.

[0067] In other optional embodiments, the insulation foam 1201 can be replaced with a polymer material with good insulation properties, such as polyurethane foam or polystyrene foam. Alternatively, the insulation foam 1201 can be omitted, and the interior of the waterproof housing 1202 can be set to a vacuum state to improve the insulation effect. Alternatively, the waterproof housing 1202 can be omitted, and the insulation foam 1201 can be made of a waterproof material to achieve both insulation and waterproofing properties.

[0068] In some other optional embodiments, when the rotating member 123 adopts a non-rod-shaped rotating connection structure, the number of the rotating member 123 can be set to multiple and arranged at intervals on the longitudinal insulation pipe 12.

[0069] In some embodiments, the thermal insulation tube 12 may further include a first elastic connector 124 and a second elastic connector 125. One end of the first elastic connector 124 is connected to the second side of the first thermal insulation member 121, and the other end is movably disposed on the guide rail assembly 11. One end of the second elastic connector 125 is connected to the second side of the second thermal insulation member 122, and the other end is movably disposed on the guide rail assembly 11.

[0070] It should be understood that since the first side of the first thermal insulation component 121 and the first side of the second thermal insulation component 122 are in a rotationally connected state, there is a maximum distance between the second side of the first thermal insulation component 121 and the second side of the second thermal insulation component 122. By providing the first elastic connector 124 and the second elastic connector 125, the setting position of the guide rail assembly 11 can be free from the limitation of the maximum distance between the second side of the first thermal insulation component 121 and the second side of the second thermal insulation component 122. Therefore, the position of the guide rail assembly 11 can be set more conveniently. At the same time, the angle of the guide rail assembly 11 can be set more conveniently to enable the first thermal insulation component 121 and the second thermal insulation component 122 to move under the action of gravity.

[0071] like Figures 2 to 4As shown, in some embodiments, the guide rail assembly 11 is respectively disposed on two opposite sides of the heat collecting tube support frame 30 .

[0072] It should be understood that "the guide rail assembly 11 is arranged on opposite sides of the heat collecting tube support frame 30" can be understood as the connection parts of the guide rail assembly 11 and the heat collecting tube support frame 30 are respectively located on opposite sides of the heat collecting tube support frame 30. However, it cannot be limited to the entire structure of the guide rail assembly 11 being respectively located on opposite sides of the heat collecting tube support frame 30. Figure 2 As shown, the projection of part of the guide rail assembly 11 on the plane where the heat collecting tube support frame 30 is located can overlap with the heat collecting tube support frame 30.

[0073] Since the heat collecting tube support frame 30 supports the heat collecting tube 20 from opposite sides of the heat collecting tube 20, the guide rail assemblies 11 can be respectively arranged on opposite sides of the heat collecting tube support frame 30, so that the guide rail assemblies 11 can be respectively located on opposite sides of the heat collecting tube 20.

[0074] Since the two side ends of the insulation tube 12 (in this embodiment, the second side end of the first insulation part 121 and the second side end of the second insulation part 122. When only one open insulation part is provided, the two side ends of the open part of the insulation part) are respectively movably provided on the guide rail assembly 11, when the insulation tube 12 moves toward the first end of the guide rail assembly 11, its two side ends can be respectively located on the opposite sides of the heat collecting tube 20, so that the heat collecting tube 20 can be surrounded during the movement.

[0075] For example Figure 4 and Figure 5 As shown, the guide rail assembly 11 may include a first guide rail 111 and a second guide rail 112. The thermal insulation pipe 12 may also include a first sliding member 126 and a second sliding member 127. The second side of the first thermal insulation member 121 may be movably connected to the first guide rail 111 via the first sliding member 126, and the second side of the second thermal insulation member 122 may be movably connected to the second guide rail 112 via the second sliding member 127.

[0076] In this embodiment, the two ends of the first elastic connector 124 are respectively connected to the second side of the first heat-insulating member 121 and the first sliding member 126 . The two ends of the second elastic connector 125 are respectively connected to the second side of the second heat-insulating member 122 and the second sliding member 127 .

[0077] It should be understood that the guide rails (the first guide rail 111 and / or the second guide rail 112) can be configured as slot-type guide rail structures. In this embodiment, the first slider 126 and the second slider 127 can be configured as slider-type structures that match the slots, thereby enabling the thermal insulation pipe 12 to move along the guide rails under the action of gravity. The guide rails (the first guide rail 111 and / or the second guide rail 112) can also be configured as rod-shaped structures. In this embodiment, the first slider 126 and the second slider 127 can be configured as annular (or cylindrical) structures that match the rod-shaped guide rails, thereby enabling sliding along the guide rails. This is not limited here.

[0078] In some embodiments, a lubricating liquid may be applied to the guide rail to improve the flexibility of the insulation pipe 12 moving along the guide rail assembly 11 .

[0079] like Figure 2 and Figure 3 As shown, the first guide rail 111 and the second guide rail 112 can be installed on opposite sides of the heat collecting tube support frame 30 respectively, so that the first guide rail 111 and the second guide rail 112 are located on opposite sides of the heat collecting tube 20 respectively.

[0080] The first end of the first guide rail 111 and the first end of the second guide rail 112 together constitute the first end of the guide rail assembly 11 , and the second end of the first guide rail 111 and the second end of the second guide rail 112 together constitute the second end of the guide rail assembly 11 .

[0081] That is, when the reflector 40 is in the heat-retaining position, the second side of the first heat-retaining member 121 can be located at the first end of the first guide rail 111 under the action of gravity, and the second side of the second heat-retaining member 122 can be located at the first end of the second guide rail 112 under the action of gravity. When the reflector 40 is in the heat-collecting position, the second side of the first heat-retaining member 121 can be located at the second end of the first guide rail 111 under the action of gravity, and the second side of the second heat-retaining member 122 can be located at the second end of the second guide rail 112 under the action of gravity.

[0082] In some embodiments, the first end of the first guide rail 111 and the first end of the second guide rail 112 are respectively located on the side of the heat collecting tube 20 away from the heat collecting tube support frame 30. The second end of the first guide rail 111 and the second end of the second guide rail 112 are respectively located between the heat collecting tube 20 and the reflector 40, so that the insulation tube 12 can move by gravity.

[0083] In this embodiment, the first end of the first guide rail 111 and the first end of the second guide rail 112 are arranged close to the side of the heat collecting tube 20 away from the heat collecting tube support frame 30, so that when the insulation tube 12 is located at the first end of the first guide rail 111 and the first end of the second guide rail 112, the heat collecting tube 20 can be wrapped.

[0084] The second ends of the first guide rail 111 and the second end of the second guide rail 112 are located between the heat collecting tube 20 and the reflector 40, further away from the heat collecting tube 20 (closer to the reflector 40). They are located closer to the end of the heat collecting tube support frame 30 away from the heat collecting tube 20. This reduces obstruction of the heat collecting tube 20 by the insulation tube 12 when in the heat collecting position, allowing the reflector 40 to reflect more energy to the heat collecting tube 20.

[0085] Specifically, the overall extension direction of the first guide rail 111 and the second guide rail 112 is substantially parallel to the extension direction of the heat collecting tube support frame 30. In this embodiment, they are both parallel to the normal line of the optical center of the reflector 40.

[0086] It should be understood that the phrase "the overall extension direction of the first guide rail 111 and the second guide rail 112 is substantially parallel to the extension direction of the heat collecting tube support frame 30" does not necessarily mean that the first guide rail 111 and the second guide rail 112 must be arranged in a straight line. As needed, at least a portion of the first guide rail 111 and the second guide rail 112 may be configured as an arcuate structure, a wavy structure, or the like, so that the insulation tube 12 can slide under gravity even at a specific angle.

[0087] In some other optional embodiments, the second end of the first guide rail 111 and the second end of the second guide rail 112 may also be arranged close to the heat collecting tube 20. The extension direction of the two guide rails may also be non-parallel to the extension direction of the heat collecting tube support frame 30.

[0088] Continue reading Figure 2 and Figure 3 In some embodiments, in the extension direction of the heat collecting tube support frame 30 , the second end of the second guide rail 112 is located between the second end of the first guide rail 111 and the heat collecting tube 20 .

[0089] This arrangement allows the thermal insulation tube 12 at the second end of the guide rail assembly 11 to be tilted when the reflector 40 is in the heat collection position. That is, the first and second thermal insulation members 121, 122 can minimize their projected areas on the horizontal plane, thereby minimizing the amount of energy reflected by the reflector 40 from the heat collection tube 20.

[0090] It should be understood that when the second end of the second guide rail 112 is located between the second end of the first guide rail 111 and the heat collecting tube 20 in the extension direction of the heat collecting tube support frame 30, the distance between the second end of the first guide rail 111 and the second end of the second guide rail 112 can be flexibly set. The distance between the two can be such that when the insulation tube 12 is located at the second end of the guide rail assembly 11, the angle between the second side of the first insulation member 121 and the second side of the second insulation member 122 and the axis of the heat collecting tube support frame 30 can be less than 45°.

[0091] In some other optional embodiments, the second end of the second guide rail 112 and the second end of the first guide rail 111 can also be arranged close to each other, so that when the insulation tube 12 is located at the second end of the guide rail assembly 11, the first insulation component 121 and the second insulation component 122 can also be closed to each other in a tubular shape, which can also have the effect of reducing the projected area.

[0092] In this embodiment, in the extension direction of the heat collecting tube support frame 30 , the first end of the first guide rail 111 is also located between the first end of the second guide rail 112 and the heat collecting tube 20 .

[0093] like Figure 4 and Figure 5 As shown, in some embodiments, the first guide rail 111 may include a first body 1111 and a first inclined section 1112, and the second guide rail 112 may include a second body 1121 and a second inclined section 1122. The first body 1111 and the second body 1121 may be arranged in parallel and spaced apart, and their extension directions may be parallel to the extension direction of the heat collecting tube support frame 30. The first inclined section 1112 is located at the second end of the first body 1111 and is inclined toward the second body 1121. The second inclined section 1122 is located at the first end of the second body 1121 and is inclined toward the first body 1111.

[0094] like Figure 4 As shown, the second inclined section 1122 can increase the inclination angle at the first end of the second guide rail 112 during the initial stage of the travel of the insulation tube 12 from the first end to the second end of the guide rail. This configuration can facilitate the initial movement of the insulation tube 12 under the action of gravity, further ensuring that the insulation tube 12 can move to the second end under the action of gravity when in the heat collection position.

[0095] like Figure 5 As shown, by providing the first inclined section 1112, the inclination angle at the second end of the first guide rail 111 can be increased at the initial stage of the travel when the insulation tube 12 moves from the second end to the first end of the guide rail. This arrangement can promote the initial movement of the insulation tube 12 under the action of gravity, further ensuring that the insulation tube 12 can move to the first end under the action of gravity when in the insulation position.

[0096] At the same time, the provision of the first inclined section 1112 also helps to reduce the distance between the second end of the first guide rail 111 and the second end of the second guide rail 112 along a direction perpendicular to the extension of the guide rail assembly 11. Furthermore, when the heat collector 1 is in the heat collection position (with the insulation tube 12 located at the second end of the guide rail), the projection of the insulation tube 12 on the reflector 40 is reduced, thereby reducing the obstruction of the reflector 40, allowing the reflector 40 to reflect more heat to the heat collecting tube 20.

[0097] In some other optional embodiments, the first guide rail 111 may further include a third inclined section (not shown in the figures), which may be provided at the first end of the first body 1111 and inclined toward the direction close to the second body 1121 .

[0098] In some other optional embodiments, the second guide rail 112 may further include a fourth inclined section (not shown in the figure), which may be disposed at the second end of the second body 1121 and inclined toward the direction close to the first body 1111 .

[0099] It should be understood that the first inclined section 1112, and / or the second inclined section 1122, and / or the third inclined section, and / or the fourth inclined section can be configured as an arcuate structure or a linear structure. When configured as an arcuate structure, the concave side thereof can be configured toward the other guide rail.

[0100] It should be understood that the number, specific shape, inclination angle, and spacing size of the inclined sections on the first main body 1111 and the second main body 1121 need to be flexibly adjusted according to the specific starting angle of the insulation position and the heat collection position, and also need to be flexibly adjusted according to the specific structure and size of the heat collection tube 20 and the heat collection tube support frame 30, so no specific limitation is made here.

[0101] It should be understood that the extension direction of the first body 1111 and the second body 1121 is parallel to the extension direction of the heat collecting tube support frame 30. This can be understood as the first body 1111 and the second body 1121 forming parallel, spaced-apart longitudinally linear structures, with the linear extension direction parallel to the extension direction of the heat collecting tube support frame 30. Alternatively, it can be understood as the first body 1111 and the second body 1121 forming a wavy, or other, longitudinally ... transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely transversely

[0102] In some other optional embodiments, the guide rail assembly 11 can also be provided with only one guide rail, which can be provided with a roughly U-shaped structure, and a spacing structure can be provided at the bottom end of the U-shape to prevent the first thermal insulation component 121 and the second thermal insulation component 122 from sliding to one side of the U-shaped structure.

[0103] In some other optional embodiments, when the insulation pipe 12 includes a first insulation part 121 and a second insulation part 122, the guide rail assembly 11 can also be set to four guide rails. The four guide rails are respectively arranged on both sides of the heat collecting tube support frame 30 in groups of two. Taking one group as an example, the first side of the first insulation part 121 is movably set on one of the guide rails in the group, and the second side of the first insulation part 121 is movably set on another guide rail in the group. The four guide rails respectively control the two sides of the first insulation part 121 and the two sides of the second insulation part 122, so as to achieve relatively flexible movement of the four side ends.

[0104] In some other optional embodiments, the heat preservation device 10 may further be provided with a driving structure, which drives the side end of the heat preservation tube 12 to move on the guide rail assembly 11.

[0105] The present application will be further described below through a specific embodiment.

[0106] like Figure 3 As shown, it shows a position state diagram of the tracking device 50 when it is at 0° under this embodiment. In this embodiment, the tracking device 50 can move back and forth from -20° to 180°. When the tracking device 50 is rotated to the position of -20°, the collector 1 is in the heat preservation position. When the tracking device 50 is between 45° and 135°, the collector 1 is in the heat collecting position. In the process of following the sun, the tracking device 50 can gradually rotate from -20° to 180°. When the sun cannot be tracked, the tracking device 50 can return to the position of -20°.

[0107] Figure 5 The diagram shows the state of the insulation device 10 when the tracking device 50 is in the -20° position. In this state, the second guide rail 112, due to the provision of the second inclined section 1122, has a first end with a greater inclination angle than the first end of the first guide rail 111, facilitating closed insulation of the insulation tube 12. The first guide rail 111, due to the provision of the first inclined section 1112, has a second end with a greater inclination angle than the second end of the second guide rail 112. This facilitates the smooth sliding of the insulation tube 12 from the second end of the guide rail to the first end as the tracking device 50 rotates toward the -20° position.

[0108] Figure 4 The diagram shows the thermal insulation device 10 when the tracking device 50 is in the 45° position (the initial position in the heat collection position). In this position, the first end of the first guide rail 111, due to the provision of the first inclined section 1112, has a greater inclination angle than the first end of the second guide rail 112. This facilitates the smooth sliding of the thermal insulation tube 12 from the first end of the guide rail to the second end as the tracking device 50 rotates toward the 45° position.

[0109] In this embodiment, the reflector 40 can be parabolic, and the heat collecting tube 20 and the heat collecting tube support frame 30 can be arranged so that the normal line of the optical center of the reflector 40, the heat collecting tube 20 and the sun are in a straight line.

[0110] It can be understood that the above embodiments only express some implementation methods of the present application, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present application. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all fall within the scope of protection of the present application, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments; therefore, all equivalent changes and modifications made to the scope of the claims of the present application should fall within the scope of coverage of the claims of the present application.

Claims

1. A heat collector with a heat collecting tube heat preservation device, comprising a heat collecting tube (20), a heat collecting tube support frame (30) and a curved reflector (40), wherein the heat collecting tube (20) is arranged at an end of the heat collecting tube support frame (30) away from the reflector (40), is spaced apart from the concave side of the reflector (40) by the heat collecting tube support frame (30), and rotates synchronously with the reflector (40); characterized in that: It also includes a heat preservation device (10) for heat preservation of the heat collecting tube (20), and the heat preservation device (10) includes: A guide rail assembly (11) mounted on the heat collecting tube support frame (30) and a heat preservation tube (12) movably arranged on the guide rail assembly (11); Wherein, the reflector (40) includes a heat collection position and a heat preservation position; When the reflector (40) is in the heat preservation position, the heat collecting pipe (20) is located below the concave side of the reflector (40), the heat preservation pipe (12) is located at the first end of the guide rail assembly (11) under the action of gravity, and the heat collecting pipe (20) is accommodated in the heat preservation pipe (12); When the reflector (40) is in the heat collection position, the heat collection pipe (20) is located above the concave side of the reflector (40), the insulation pipe (12) is located at the second end of the guide rail assembly (11) under the action of gravity, and the heat collection pipe (20) is located outside the insulation pipe (12).

2. The heat collector with heat collecting tube insulation device according to claim 1, characterized in that: The insulation pipe (12) comprises a first insulation component (121) and a second insulation component (122); the first insulation component (121) and the second insulation component (122) are both in the shape of curved panels and are movably disposed on the guide rail assembly (11); When the reflector (40) is in the heat-insulating position, the first heat-insulating component (121) and the second heat-insulating component (122) are combined into a hollow tubular structure to accommodate the heat collecting tube (20); When the reflector (40) is in the heat collection position, at least one side of the first heat-insulating component (121) and the second heat-insulating component (122) are spaced apart.

3. The heat collector with heat collecting tube insulation device according to claim 2, characterized in that: The first side of the first heat-insulating component (121) is rotatably connected to the first side of the second heat-insulating component (122), and the second side of the first heat-insulating component (121) and the second side of the second heat-insulating component (122) are movably arranged on the guide rail assembly (11).

4. The heat collector with heat collecting tube insulation device according to claim 3, characterized in that: The thermal insulation pipe (12) further includes a first elastic connector (124), a second elastic connector (125), a first sliding member (126) and a second sliding member (127); one end of the first elastic connector (124) is connected to the second side of the first thermal insulation member (121), and the other end is movably arranged on the guide rail assembly (11) through the first sliding member (126); one end of the second elastic connector (125) is connected to the second side of the second thermal insulation member (122), and the other end is movably arranged on the guide rail assembly (11) through the second sliding member (127).

5. The heat collector with heat collecting tube insulation device according to claim 2, characterized in that: The first thermal insulation component (121) and the second thermal insulation component (122) both comprise thermal insulation cotton and a hollow waterproof shell, and the thermal insulation cotton is arranged in the waterproof shell.

6. The heat collector with heat collecting tube insulation device according to claim 2, characterized in that: At least part of the guide rail assembly (11) is respectively arranged on two opposite sides of the heat collecting tube support frame (30).

7. The heat collector with heat collecting tube insulation device according to claim 6, characterized in that: The guide rail assembly (11) comprises a first guide rail (111) and a second guide rail (112) respectively mounted on opposite sides of the heat collecting tube support frame (30); the first heat insulating member (121) is movably connected to the first guide rail (111), and the second heat insulating member (122) is movably connected to the second guide rail (112).

8. The heat collector with heat collecting tube insulation device according to claim 7, characterized in that: The first end of the first guide rail (111) and the first end of the second guide rail (112) are located on a side of the heat collecting tube (20) away from the heat collecting tube support frame (30); the second end of the first guide rail (111) and the second end of the second guide rail (112) are located between the heat collecting tube (20) and the reflector (40).

9. The heat collector with the heat collecting tube insulation device according to claim 8, characterized in that: In the extension direction of the heat collecting tube support frame (30), the second end of the second guide rail (112) is located between the second end of the first guide rail (111) and the heat collecting tube (20).

10. The heat collector with heat collecting tube insulation device according to claim 8, characterized in that: The first guide rail (111) comprises a first main body (1111) and a first inclined section (1112), and the second guide rail (112) comprises a second main body (1121) and a second inclined section (1122); the first main body (1111) and the second main body (1121) are arranged in a longitudinal direction, and their axes are parallel and spaced apart; the first inclined section (1112) is arranged at the second end of the first main body (1111) and is inclined in a direction close to the second guide rail (112); the second inclined section (1122) is arranged at the first end of the second main body (1121) and is inclined in a direction close to the first guide rail (111).

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