Heat collector

Abstract

The invention discloses a heat collector which comprises a heat collecting pipe, a heat collecting pipe supporting frame, a curved-surface-shaped reflecting mirror and a heat preservation device for preserving heat of the heat collecting pipe. The heat preservation device comprises a guide rail assembly installed on the heat collection pipe supporting frame and a heat preservation pipe movably arranged on the guide rail assembly. The reflecting mirror comprises a heat collection position and a heat preservation position; when the reflecting mirror is located at the heat preservation position, the heat collecting pipe is located below the reflecting mirror, the heat preservation pipe is located at the first end of the guide rail assembly under the action of gravity, and the heat collecting pipe is contained in the heat preservation pipe. When the reflecting mirror is located at the heat collection position, the heat collection pipe is located above the reflecting mirror, the heat preservation pipe is located at the second end of the guide rail assembly under the action of gravity, and the heat collection pipe is located outside the heat preservation pipe. The temperature of the heat collecting pipe can be protected at night or in cloudy and rainy days without the sun, and the heat loss of the heat collecting pipe is greatly reduced.

Description

Technical Field

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

[0002] There is a solar collector that can use a parabolic reflector to focus solar radiation onto a heat collecting tube, collect the energy focused by the sun, and heat the working fluid flowing in the heat collecting tube to produce a high-temperature medium. A trough solar collector is generally composed of a heat collecting tube, a reflector, a support device, and a tracking device. The reflector is formed of a parabolic reflective material, the heat collecting tube is located on the focal line of the parabola, and the tracking device ensures that the normal of the optical center of the reflector, the heat collecting tube, and the sun are in a straight line.

[0003] At present, this type of collector sets a vacuum layer between the metal tube at the back of the collector tube and the outer glass tube to reduce the heat loss of the collector tube. However, at night, the working fluid in the collector tube will continue to flow and transfer heat to the outside, causing heat loss. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide an improved heat collector.

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

[0006] A heat collector is constructed, comprising: a heat collecting tube, a heat collecting tube support frame and a curved reflector, wherein the heat collecting tube is arranged at the end of the heat collecting tube support frame away from the reflector, is arranged at intervals on the concave side of the reflector through the heat collecting tube support frame, and rotates synchronously with the reflector; the heat collector also comprises a heat preservation device for heat preservation of the heat collecting tube, and the heat preservation device comprises:

[0007] A guide rail assembly installed 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 heat preservation pipe includes a first heat preservation member and a second heat preservation member; the first heat preservation member and the second heat preservation 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 preservation position, the first heat preservation member and the second heat preservation 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 pipe 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 disposed 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 disposed 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 collector 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 a 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 a 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 a direction close to the first guide rail.

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

[0023] The present application provides a heat preservation device to protect the temperature of the heat collecting tube when there is no sun at night or on rainy days, thereby greatly reducing the heat loss of the heat collecting tube. The present application provides a heat preservation tube that can automatically move along the guide rail assembly under the action of gravity, so that the heat collector can automatically realize the movement of the heat preservation tube along the guide rail assembly during the process of 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 is a schematic structural diagram of a heat collector according to an embodiment of the present application;

[0026] Figure 2 yes Figure 1 A schematic diagram of the structure of a part of the collector shown at another angle;

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

[0028] Figure 4 yes Figure 1 A 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 A 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 have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods 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", "outside", etc. are based on the directions or positional relationships shown in some of the drawings, and are constructed and operated in a specific direction. They are only for the convenience of describing the present technical solution, and do not indicate that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present application.

[0032] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, 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 intermediate 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 technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the 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, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also 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 prevent unnecessary details from obstructing the description of the present application.

[0034] like Figure 1 As shown, the present application constructs a heat collector 1 that 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] Read also Figure 2, wherein the tracking device 50 is arranged on the supporting device 60 for tracking the sun. The reflector 40 is in a curved shape and is arranged on the tracking device 50 for focusing the energy of the sun. 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 comprises a guide rail assembly 11 and a heat preservation pipe 12. The guide rail assembly 11 is installed on a 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 collector 1 in use, “the heat collecting tube 20 is located below the reflector 40” can be understood as, when the concave side of the reflector 40 faces away from the sun, the heat collecting tube 20 can be considered to be located below the reflector 40. “The heat collecting tube 20 is located above the reflector 40” can be understood as, when the concave side of the reflector 40 faces the sun, the heat collecting tube 20 can be considered to be located above the reflector 40.

[0040] by Figure 1 and Figure 2 As an example, taking the angle of the collector 1 in the use state as a reference, when the height of the heat collecting tube 20 is between the sun and the tracking device 50, 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 regarded as being 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 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 the position of the collector 1 when it is at 0°). The heat preservation position of the collector 1 can be at a position of -20 degrees. When the sun cannot be tracked, the tracking device 50 can be rotated to a position of -20°. When the tracking device 50 is rotated to between 45° and 135°, the collector 1 can be regarded as being in the heat preservation position.

[0043] In the 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 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 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 limitation is made here.

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

[0045] It should be understood that, since the tracking device 50 of the collector 1 can track the rotation of the sun, when there is no sun, driven by the tracking device 50, the heat collecting tube 20 can be on 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 arranged on the heat collecting tube support frame 30 can be at an angle tilted downward. When the sun appears, the tracking device 50 makes the concave side of the reflector 40 always face the sun to focus energy. Therefore, when the sun appears, the heat collecting tube support frame 30 and the guide rail assembly 11 arranged on the heat collecting tube support frame 30 can be at an angle tilted upward.

[0046] The present application provides a guide rail assembly 11 and a heat preservation pipe 12 movably provided on the guide rail assembly 11, and enables the heat preservation pipe 12 to move back and forth along the guide rail assembly 11 under the action of gravity. In the process of the collector 1 automatically tracking the sun, the heat preservation pipe 12 can be automatically moved along the guide rail assembly 11 according to the change in the angle of gravity and 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, and wrap the heat collecting pipe 20 located at the end of the heat collecting pipe support frame 30. That is, 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 (even vertically) upward, the insulation pipe 12 can move downward along the guide rail assembly 11 under the action of gravity to release the wrapping of the heat collecting pipe 20. That is, the protection of the heat collecting pipe 20 can be automatically released under the action of gravity.

[0048] This arrangement reduces the investment of manpower and material resources and avoids the problem that the operator forgets to control the heat preservation of the heat collecting tube 20 / releases the heat preservation of the heat collecting tube 20. It can ensure that the heat collecting tube 20 can greatly reduce the heat loss, and at the same time will not affect the heat collecting tube 20 to absorb the energy collected by the reflector 40.

[0049] For example Figure 1 As shown, the number of heat collecting tubes 20 of the 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 heat preservation pipe 12 includes a first heat preservation member 121 and a second heat preservation member 122. The first heat preservation member 121 and the second heat preservation 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 the first thermal insulation component 121 and the second thermal insulation component 122 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 moved to the first end of the guide rail assembly 11 respectively 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 tube 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 moved to the second end of the guide rail assembly 11 respectively 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 tube 20 can be relatively moved out on one side of the spaced-apart structure to release the 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, 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 realize 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] Such an 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 preservation position, the formation of the tubular structure can be achieved by controlling the second side of the first heat preservation member 121 and the second side of the second heat preservation member 122 to approach each other. The gradual encirclement of the heat collecting tube 20 can also be achieved in the process of the two sides approaching each other. When it is necessary to separate from the heat collecting tube 20, it can be achieved by controlling the second side of the first heat preservation member 121 and the second side of the second heat preservation member 122 to separate from each other. There is no need to consider the position of the first side of the first heat preservation member 121 and the first side of the second heat preservation member 122.

[0058] In some other optional embodiments, the first thermal insulation component 121 and the second thermal insulation component 122 can also be integrally set to a mutually separated structure. The first side end and the second side end of the first thermal insulation component 121 and the second thermal insulation component 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 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 some other optional embodiments, the heat preservation pipe 12 may be provided with only one heat preservation member, and by providing it as a semi-enclosed structure, it may also be possible to surround the heat collecting pipe 20, and through the open side of the semi-enclosed structure, it may be separated from the heat collecting pipe 20. Compared with the heat collecting pipe 20 being placed outside the environment, it is placed in the semi-enclosed heat preservation pipe 12, which may also reduce heat loss.

[0060] In this embodiment, the cross-sections of the first thermal insulation component 121 and the second thermal insulation 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 some other optional embodiments, the cross-sections of the first heat-insulating member 121 and the second heat-insulating member 122 may also be in a concave shape, a triangle, a polygon, etc. The shape of the plate-shaped cross-section is such that the two can be roughly tubular after being butted together.

[0062] Specifically, the first heat-insulating member 121 and the second heat-insulating member 122 may be configured to have the same structure. The first heat-insulating member 121 will be taken as an example for illustrative description. Figure 6 As shown, the first heat-insulating member 121 may include heat-insulating cotton 1201 and a waterproof shell 1202. The waterproof shell 1202 is a hollow arc-shaped plate-shaped shell, and the heat-insulating cotton 1201 is filled in the waterproof shell 1202. The waterproof shell 1202 can prevent the heat-insulating cotton 1201 from getting wet in rainy and snowy weather. The heat-insulating cotton 1201 can reduce the heat loss of the heat collecting pipe 20.

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

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

[0065] By setting the rotating member 123 to be rod-shaped, the first thermal insulation member 121 and the second thermal insulation member 122 can be rotatably connected, and the supporting strength of the thermal insulation 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., which are not specifically limited here.

[0067] In some other optional embodiments, the heat-insulating cotton 1201 can also be replaced with a polymer material with good heat-insulating effect, such as polyurethane foam, polystyrene foam, etc. The heat-insulating cotton 1201 can also be omitted, and the heat-insulating effect can be improved by setting the interior of the waterproof shell 1202 to a vacuum state. The waterproof shell 1202 can also be omitted, and the heat-insulating and waterproof effects can also be achieved by selecting a waterproof material to make the heat-insulating cotton 1201.

[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 be multiple and arranged at intervals on the longitudinal insulation pipe 12.

[0069] In some embodiments, the thermal insulation pipe 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 setting the first elastic connector 124 and the second elastic connector 125, the setting position of the guide rail assembly 11 can be not limited by 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 disposed on opposite sides of the heat collecting tube support frame 30” can be understood as the connection portion between the guide rail assembly 11 and the heat collecting tube support frame 30 is respectively located on opposite sides of the heat collecting tube support frame 30. However, it cannot be limited to that the entire structure of the guide rail assembly 11 is 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 assembly 11 can be located at opposite sides of the heat collecting tube 20 by arranging the guide rail assembly 11 at opposite sides of the heat collecting tube support frame 30.

[0074] Since the two side ends of the insulation tube 12 (in the present embodiment, the second side end of the first insulation component 121 and the second side end of the second insulation component 122. When only one open insulation component is provided, the two side ends of the open part of the insulation component) 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 heat preservation pipe 12 may also include a first sliding member 126 and a second sliding member 127. The second side of the first heat preservation member 121 may be movably connected to the first guide rail 111 through the first sliding member 126, and the second side of the second heat preservation member 122 may be movably connected to the second guide rail 112 through the second sliding member 127.

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

[0077] It should be understood that the guide rail (the first guide rail 111 and / or the second guide rail 112) can be set as a slot-type guide rail structure. In this embodiment, the first sliding member 126 and the second sliding member 127 can be set as a slider structure that matches the slot, so as to achieve the movement of the insulation pipe 12 along the guide rail under the action of gravity. The guide rail (the first guide rail 111 and / or the second guide rail 112) can also be set as a rod-shaped structure. In this embodiment, the first sliding member 126 and the second sliding member 127 can be set as an annular (or cylindrical) structure that matches the rod-shaped guide rail, so as to achieve sliding along the guide rail. No limitation is made here.

[0078] In some embodiments, a lubricating liquid may also be applied on 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 preservation position, the second side of the first heat preservation 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 preservation 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 collection position, the second side of the first heat preservation 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 preservation 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 thermal 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 end of the first rail 111 and the second end of the second rail 112 are arranged between the heat collecting tube 20 and the reflector 40, further away from the heat collecting tube 20 (close to the reflector 40). They are closer to the end of the heat collecting tube support frame 30 away from the heat collecting tube 20, so as to reduce the shielding of the heat collecting tube 20 by the insulation tube 12 when in the heat collecting position, so that the reflector 40 can 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 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 mean that the first guide rail 111 and the second guide rail 112 must be arranged in a straight line. They can be at least partially arranged in an arc structure, a wavy structure, etc. as needed, so that the insulation tube 12 can also slide by gravity at a specific angle position.

[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] Such a configuration allows the heat preservation tube 12 at the second end of the guide rail assembly 11 to be tilted when the reflector 40 is located at the heat collection position. That is, the first heat preservation member 121 and the second heat preservation member 122 can reduce their projection areas on the horizontal plane as much as possible to reduce the shielding of the reflector 40 from the reflected energy of the heat collection tube 20.

[0090] It should be understood that when the second end of the second rail 112 is between the second end of the first 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 rail 111 and the second end of the second rail 112 can be flexibly set. The distance between the two can make 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 less than 45° when the heat insulating tube 12 is located at the second end of the rail assembly 11.

[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 projection 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 the extension direction of the two 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 direction close to 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 direction close to the first body 1111.

[0094] like Figure 4 As shown, by setting, the second inclined section 1122 can increase the inclination angle at the first end of the second guide rail 112 in the initial stage of the travel when the insulation pipe 12 moves from the first end of the guide rail to the second end. Such a setting can promote the insulation pipe 12 to start moving under the action of gravity, and further ensure that the insulation pipe 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 in the initial stage of the travel when the heat preservation pipe 12 moves from the second end to the first end of the guide rail. Such a setting can promote the heat preservation pipe 12 to start moving under the action of gravity, and further ensure that the heat preservation pipe 12 can move to the first end under the action of gravity when in the heat preservation position.

[0096] At the same time, the provision of the first inclined section 1112 is also conducive to reducing the distance between the second end of the first rail 111 and the second end of the second rail 112 along the extension direction perpendicular to the rail assembly 11. When the collector 1 is in the heat collection position (the insulation tube 12 is located at the second end of the rail), the projection of the insulation tube 12 on the reflector 40 is reduced, thereby reducing the shielding of the reflector 40, so that the reflector 40 can 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 figure), which may be disposed at the first end of the first body 1111 and inclined toward a 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 a 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 arc structure or a linear structure. When they are configured as an arc structure, their concave side can be configured toward another 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. It can be understood that the first body 1111 and the second body 1121 are parallel and spaced longitudinal straight-line structures, and the extension direction of the straight line is parallel to the extension direction of the heat collecting tube support frame 30. It can also be understood that the two are wavy structures with longitudinal axes, and the axes of the two are arranged in parallel and spaced (the specific structure of the first body 1111 and the second body 1121 can be set to be non-parallel), and the extension direction of the axis is parallel to the extension direction of the heat collecting tube support frame 30. No specific limitation is made here.

[0102] In some other optional embodiments, the guide rail assembly 11 may also be provided with only one guide rail, which may be provided with a roughly U-shaped structure, and a spacing structure may 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 member 121 and a second insulation member 122, the guide rail assembly 11 can also be set to four guide rails. The four guide rails are arranged in groups of two on both sides of the heat collecting tube support frame 30. Taking one group as an example, the first side of the first insulation member 121 is movably arranged in one of the guide rails, and the second side of the first insulation member 121 is movably arranged on another guide rail of the group. The two sides of the first insulation member 121 and the two sides of the second insulation member 122 are respectively controlled by the four guide rails, so as to realize the relatively flexible movement of the four side ends.

[0104] In some other optional embodiments, the heat preservation device 10 may also be provided with a driving structure, and the side end of the heat preservation tube 12 is driven by the driving structure 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 when the tracking device 50 is at 0° under this embodiment. Under this embodiment, the tracking device 50 can move back and forth from -20° to 180°. When the tracking device 50 rotates to the position of -20°, the collector 1 is in the heat preservation position. When the tracking device 50 is located between 45° and 135°, the collector 1 is in the heat collection 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 schematic diagram of the state of the heat preservation device 10 when the tracking device 50 is located at the position of -20° is shown. In this state, due to the setting of the second inclined section 1122, the first end of the second guide rail 112 has an inclination angle greater than the first end of the first guide rail 111, so that the heat preservation pipe 12 can achieve closed heat preservation. Due to the setting of the first inclined section 1112, the second end of the first guide rail 111 has an inclination angle greater than the second end of the second guide rail 112, which is conducive to the heat preservation pipe 12 being able to slide smoothly from the second end of the guide rail to the first end during the rotation of the tracking device 50 to the position of -20°.

[0108] Figure 4 The schematic diagram of the state of the heat preservation device 10 when the tracking device 50 is located at a position of 45° (the initial position in the heat collection position) is shown. In this state, the first end of the first guide rail 111 is inclined at a greater angle than the first end of the second guide rail 112 due to the provision of the first inclined section 1112. This facilitates the heat preservation pipe 12 to smoothly slide from the first end of the guide rail to the second end during the rotation of the tracking device 50 to the position of 45°.

[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 the description thereof is relatively specific and detailed, but it 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 belong to the protection scope 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 the claims of the present application.

Claims

1. A heat collector, 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: The heat collector (1) further comprises a heat preservation device (10) for preserving the heat of the heat collecting tube (20), wherein the heat preservation device (10) comprises: 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) comprises a heat collection position and a heat preservation position; 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 collection tube (20) is located above the reflector (40), the insulation tube (12) is located at the second end of the guide rail assembly (11) under the action of gravity, and the heat collection tube (20) is located outside the insulation tube (12).

2. The collector according to claim 1, characterized in that: The thermal insulation pipe (12) comprises a first thermal insulation component (121) and a second thermal insulation component (122); the first thermal insulation component (121) and the second thermal insulation component (122) are both in the shape of curved plates 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 collector according to claim 2, characterized in that: The first side of the first thermal insulation component (121) is rotatably connected to the first side of the second thermal insulation component (122), and the second side of the first thermal insulation component (121) and the second side of the second thermal insulation component (122) are movably arranged on the guide rail assembly (11).

4. The collector according to claim 3, characterized in that: The thermal insulation pipe (12) further comprises a first elastic connecting member (124), a second elastic connecting member (125), a first sliding member (126) and a second sliding member (127); one end of the first elastic connecting member (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) via the first sliding member (126); one end of the second elastic connecting member (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) via the second sliding member (127).

5. The heat collector 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 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 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 installed on opposite sides of the heat collecting tube support frame (30); the first thermal insulation component (121) is movably connected to the first guide rail (111), and the second thermal insulation component (122) is movably connected to the second guide rail (112).

8. The heat collector 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 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 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 the axes of the two 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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