Heat absorber heat preservation structure, heat absorber tube panel structure and tower type solar heat absorber

Abstract

The utility model belongs to solar thermal power generation technical field discloses heat absorber heat preservation structure, heat absorber tube screen structure and tower type solar heat absorber. The tower type heat absorber heat preservation structure includes first heat preservation module and at least one heat preservation module fixed assembly, and first heat preservation module includes heat preservation space, and heat preservation space is configured as the partial structure for accommodating the object to be kept warm, or the whole structure for accommodating the object to be kept warm, and first heat preservation module is wrapped in the object to be kept warm outside. The heat preservation module fixed assembly is configured to fix the first heat preservation module on the object to be kept warm, and the heat preservation module fixed assembly includes a through member and at least one locking member, and the through member includes an internal segment and at least one extension segment. The heat absorber heat preservation structure can reduce the loss of heat in the object to be kept warm, effectively avoid the problems in the prior art, and the heat preservation module fixed assembly can also avoid the movement of the first heat preservation module under external force (such as vibration).

Description

Technical Field

[0001] This utility model relates to the field of solar thermal power generation technology, and in particular to a heat absorber insulation structure, a heat absorber tube screen structure, and a tower-type solar heat absorber. Background Technology

[0002] Tower solar thermal power generation is a technology that uses a group of heliostats to focus sunlight onto a heat absorber and convert light energy into heat energy to generate electricity. It uses multiple flat or concave mirrors to reflect sunlight onto the heat absorber at the top of the heat collection tower. The concentrated sunlight causes the heat absorber to heat up rapidly, which heats the heat transfer medium inside the heat absorber. The heated heat transfer medium then heats the water inside the system to form steam, which drives a steam turbine to do work and generate electricity.

[0003] Currently, commonly used tower solar absorbers consist of multiple tube panels. Each tube panel comprises an upper header, a lower header, and absorber tubes. All absorber tubes within the same tube panel are connected in parallel through the upper and lower headers. The heat transfer medium enters the absorber tubes from the lower header and flows out from the upper header. To improve the absorber's insulation performance and reduce heat loss, insulated boxes made of insulating material are typically installed outside the upper and lower headers of the tube panels. However, the structure and installation of these insulated boxes are relatively complex, and their insulation effect is poor, failing to adequately meet the daily insulation requirements of tower solar absorbers. Utility Model Content

[0004] The purpose of this utility model is to provide a heat absorber insulation structure, a heat absorber tube screen structure, and a tower-type solar heat absorber, which has strong heat insulation and good practicality.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] include:

[0007] The first insulation module includes an insulation space, which is configured to accommodate a portion of the structure of the object to be insulated, or to accommodate the entire structure of the object to be insulated. The first insulation module is wrapped around the outside of the object to be insulated.

[0008] At least one insulation module fixing assembly is configured to fix the first insulation module to the object to be insulated. The insulation module fixing assembly includes a through member and at least one locking member. The through member includes an internal section and at least one protruding section.

[0009] The built-in section of the through-insulation component is disposed within the first insulation module, or the built-in section of the through-insulation component is installed on the object to be insulated;

[0010] The protruding section of the through-through member passes through the first heat insulation module, and the locking member is installed on the protruding section of each through-through member;

[0011] The locking component includes an adjustment state and a locking state;

[0012] In the adjusted state of the locking member, the locking position of the locking member on the through member can be adjusted according to the thickness of the first insulation module;

[0013] In the locked state of the locking member, the locking member is fixed to the protruding section of the through member, and the locking member abuts against the side of the first insulation module away from the object to be insulated;

[0014] The number of protruding sections of the inserting member is the same as the number of locking members.

[0015] Preferably, the built-in section of the through-feed member is installed on the object to be insulated, the protruding section of the through-feed member passes through the first insulation module, and the locking member is installed on the protruding section of the through-feed member;

[0016] The insulation module fixing assembly includes a through-feed member and a locking member, wherein the through-feed member includes a built-in section and a protruding section.

[0017] Preferably, the first insulation module includes a first insulation layer and a first protective layer, wherein the first insulation layer is attached to the outside of the object to be insulated, and the first protective layer is disposed on the outside of the first insulation layer.

[0018] In the locked state, the locking member is fixedly disposed on the protruding section of the through member, and the locking member abuts against the first protective layer.

[0019] A heat absorber tube screen structure, employing at least one heat absorber insulation structure as described in any one of the technical solutions, further comprising a heat absorber tube screen, wherein the heat absorber tube screen is configured to heat the medium flowing in the heat absorber tube screen by sunlight.

[0020] The absorber tube screen as a whole includes at least one light-receiving part and at least one light-shielding part, and at least one light-shielding part of the absorber tube screen is provided with the absorber insulation structure.

[0021] Wherein, the object to be insulated is the heat absorber tube screen, the heat insulation space is configured to accommodate a portion of the heat absorber tube screen, the light-receiving part is the part that receives sunlight when the heat absorber tube screen is in operation, and the light-shielding part is the part that does not receive sunlight when the heat absorber tube screen is in operation.

[0022] Preferably, the absorber tube panel is divided into an inlet section, a middle section, and an outlet section along the flow direction of the medium;

[0023] The light-shielding part, which is provided with the heat-absorbing insulation structure of the heat absorber, is a characteristic light-shielding part;

[0024] The middle section of the absorber tube screen is the light-receiving part, the inlet section of the absorber tube screen is the characteristic light-shielding part, and the outlet section of the absorber tube screen is the characteristic light-shielding part.

[0025] Preferably, the absorber tube panel includes an upper header, a lower header, and several absorber tubes.

[0026] A number of the heat-absorbing tubes are disposed between the upper header of the heat-absorbing tube screen and the lower header of the heat-absorbing tube screen. The medium input end of all the heat-absorbing tubes is connected to the upper header of the heat-absorbing tube screen, and the medium output end of all the heat-absorbing tubes is connected to the lower header of the heat-absorbing tube screen.

[0027] Each of the heat-absorbing tubes includes, in sequence, a first tube section, a second tube section, and a third tube section along the direction of medium flow;

[0028] The upper header of the absorber tube screen and the first section of all the absorber tubes form the inlet section of the absorber tube screen, and the lower header of the absorber tube screen and the third section of all the absorber tubes form the outlet section of the absorber tube screen.

[0029] Preferably, the device also includes a heating element sandwiched between the absorber tube screen and the first insulation module, and / or the outer surface of the first insulation module is coated with a reflective coating.

[0030] A tower-type solar absorber includes at least one absorber tube screen structure as described in any one of the technical solutions and at least one first structure;

[0031] One of the heat absorber tube screen structures and at least one of the first structures constitutes component group number one;

[0032] In each of the aforementioned absorber tube screen structures, when the absorber tube screen is in operation, the light-receiving part includes a light-receiving surface and a back-lighting surface;

[0033] In each of the first component groups, the first structure is disposed near the characteristic light-shielding part of the absorber tube screen structure, and the first structure is located on the side of the light-receiving surface of the absorber tube screen. The first structure is configured to shield the characteristic light-shielding part of the absorber tube screen structure from sunlight when the absorber tube screen is in operation.

[0034] The light-shielding portion of the absorber tube screen structure corresponds one-to-one with the first structure.

[0035] Preferably, the first component group also includes a second insulation module;

[0036] In each of the first component groups, the middle section of the absorber tube screen is the light-receiving part, the inlet section of the absorber tube screen is the characteristic light-shielding part, and the outlet section of the absorber tube screen is the characteristic light-shielding part.

[0037] In each of the first component groups, the second heat insulation module abuts against the backlight surface of the absorber tube screen, or the second heat insulation module abuts against the backlight surface of the absorber tube screen; wherein, the second heat insulation module is configured to insulate the backlight surface of the light-receiving part.

[0038] In each of the first component groups, one end of the second insulation module abuts against the first insulation module located on the backlight side of the inlet section of the absorber tube screen, and the other end of the second insulation module abuts against the first insulation module located on the backlight side of the outlet section of the absorber tube screen.

[0039] Preferably, the first component group also includes two third insulation modules;

[0040] In each of the first component groups, the first structure disposed at the inlet section of the absorber tube screen is designated as the first first structure, and the first structure disposed at the outlet section of the absorber tube screen is designated as the second first structure.

[0041] In each of the first component groups, with the orientation of the light-receiving surface of the light-receiving part as the first direction, the middle section of the absorber tube screen is divided into a first middle section, a second middle section, and a third middle section; wherein, the first middle section is a predetermined portion of the middle section of the absorber tube screen near the inlet section of the absorber tube screen, and the third middle section is a predetermined portion of the middle section of the absorber tube screen near the outlet section of the absorber tube screen;

[0042] In each of the first component groups, along the first direction, a portion of the first structure is disposed on the front side of the first middle section, and a portion of the second structure is disposed on the front side of the third middle section;

[0043] In each of the first component groups, the gap between the first middle section and the first structure is the first gap to be sealed, and the gap between the third middle section and the second structure is the second gap to be sealed. The two third insulation modules are respectively installed at the first gap to be sealed and the second gap to be sealed.

[0044] In each of the first component groups, one side of the third insulation module abuts against the heat absorber tube screen, and the other side of the third insulation module abuts against the first structure.

[0045] Preferably, the third insulation module includes embedded parts and a third insulation structure;

[0046] One end of the embedded part is installed on the heat absorber tube screen, and the length direction of the embedded part extends towards the first structure. The third insulation structure is installed on the embedded part by fasteners. The third insulation structure includes a third insulation layer and a third protective layer. The third protective layer is disposed on the outside of the third insulation layer. The third protective layer abuts against the first structure, and the third insulation layer abuts against the heat absorber tube screen.

[0047] Wherein, along the first direction, the embedded part is disposed on the rear side of the first structure.

[0048] Preferably, the system also includes several fourth insulation modules. In any two adjacent first component groups, the fourth insulation module is provided between the inlet sections of the two absorber tube screens and between the outlet sections of the two absorber tube screens.

[0049] The beneficial effects of this utility model are as follows:

[0050] The heat absorber insulation structure provided by this utility model wraps a portion or all of the object to be insulated with a first insulation module, ensuring the module is tightly fitted to the object and minimizing contact between the object and the heat transfer medium (such as air), thus preventing heat loss. At least one insulation module fixing component ensures the module is securely wrapped around the object. The fixing component includes a through-hole component and at least one locking component. The through-hole component comprises an internal section and at least one extended section. The internal section is either within the first insulation module or mounted on the object. Its primary function is to stabilize the through-hole component, allowing only slight movement or immobilizing it completely. This design provides a locking mechanism for the locking component. The extended section penetrates the first insulation module, providing a mounting base for the locking component. The locking component includes an adjustment state and a locking state. In the adjustment state, the locking position of the locking component on the inserting component can be adjusted according to the thickness of the first insulation module. In the locking state, the locking component is fixed to the protruding section of the inserting component, and the locking component abuts against the side of the first insulation module away from the object to be insulated. In existing technical solutions, the insulation module is usually fixed to the object to be insulated by adhesive. However, when the temperature of the object to be insulated is high, the adhesive between the insulation module and the object to be insulated may fail, resulting in the insulation module falling off. The insulation module fixing component can press the first insulation module, which is wrapped around the outside of the object to be insulated, tightly against the object to be insulated. This not only reduces the heat loss in the object to be insulated but also effectively avoids the problems in the prior art. Furthermore, the insulation module fixing component can also prevent the first insulation module from moving under external forces (such as vibration).

[0051] The absorber tube screen structure provided by this utility model distinguishes between the light-receiving part and the light-shielding part based on whether the absorber tube screen is exposed to sunlight when it is in operation. The light-receiving part is the portion of the absorber tube screen that is exposed to sunlight (i.e., receives solar radiation) when it is in operation, while the light-shielding part is the portion of the absorber tube screen that is not exposed to sunlight (i.e., does not receive solar radiation) when it is in operation. In the prior art, in order to maintain the temperature of the medium in the absorber tube screen, a heat-insulating structure is usually provided in the light-shielding part of the absorber tube screen. This heat-insulating structure is usually arranged around the light-shielding part to form a heat-insulating structure. While existing insulation structures can form an insulated box, gaps exist between the light-shielding part of the absorber tube screen and the structure of the insulated box, resulting in poor insulation performance. The technical solution in this application addresses this issue by placing the first insulation module close to the absorber tube screen. Compared to the traditional method of enclosing an external insulated box, this first insulation module reduces the amount of insulation material used and significantly reduces redundant space and gaps between the first insulation module and the light-shielding part of the absorber tube screen. This reduces heat loss caused by the flow of heat transfer media (such as air) and improves the heat collection performance of the absorber tube screen structure.

[0052] The tower-type solar absorber provided by this utility model employs two third insulation modules to fill the first and second gaps to be sealed, ensuring that rainwater and dust will not seep in through these gaps and thus damage the absorber's insulation structure. Specifically, the first component group also includes two third insulation modules. In each first component group, the first structure located at the inlet section of the absorber tube screen is designated as the first first structure, and the first structure located at the outlet section of the absorber tube screen is designated as the second first structure. In each first component group, with the orientation of the light-receiving surface of the light-receiving part as the first direction, the middle section of the absorber tube screen is divided into a first middle section, a second middle section, and a third middle section. The first middle section is located on the upper part of the middle section of the absorber tube screen, near the... The pre-set portion of the inlet section near the receiver tube screen; the third middle section is the pre-set portion of the middle section of the receiver tube screen near the outlet section of the receiver tube screen; in each first component group, along the first direction, a portion of the first structure is set in front of the first middle section, and a portion of the second structure is set in front of the third middle section; in each first component group, the gap between the first middle section and the first structure is the first gap to be sealed, and the gap between the third middle section and the second structure is the second gap to be sealed, and two third insulation modules are respectively installed at the first gap to be sealed and the second gap to be sealed; wherein, in each first component group, one side of the third insulation module abuts against the receiver tube screen, and the other side of the third insulation module abuts against the first structure. Attached Figure Description

[0053] Figure 1 This is a cross-sectional view of the heat absorber tube screen lower header and heat absorber tube provided in a specific embodiment of this utility model;

[0054] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0055] Figure 3 This is a cross-sectional view of the heat absorber tube screen header and heat absorber tube provided in a specific embodiment of this utility model;

[0056] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle.

[0057] In the picture:

[0058] 100-First Structure No. 1;

[0059] 200-Second Structure No. 1;

[0060] 1-First insulation module;

[0061] 2-Second insulation module;

[0062] 3-Third insulation module; 31-Third insulation structure; 311-Third insulation layer; 312-Third protective layer; 32-Embedded parts;

[0063] 4-Heat absorber tube panel upper header;

[0064] 5-Lower header of absorber tube panel;

[0065] 6-Heat absorber; 61-First tube section; 62-Second tube section; 63-Third tube section;

[0066] 7-Heating element;

[0067] 9-Heat absorber tube panel;

[0068] 10-First structure. Detailed Implementation

[0069] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0070] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0071] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0073] Example 1

[0074] This utility model provides a heat absorber insulation structure, which includes a first insulation module 1 and at least one insulation module fixing component. The first insulation module 1 includes an insulation space, which is configured to accommodate part of the structure of the object to be insulated, or to accommodate the entire structure of the object to be insulated. The first insulation module 1 is wrapped around the outside of the object to be insulated. The insulation module fixing component is configured to fix the first insulation module 1 to the object to be insulated. The insulation module fixing component includes a through-hole member and at least one locking member. The through-hole member includes an internal section and at least one protruding section. The internal section of the through-hole member is disposed within the first insulation module. The insulation module 1 is installed inside the insulation component or the built-in section of the through-insulation component on the object to be insulated; the protruding section of the through-insulation component passes through the first insulation module 1, and a locking component is installed on the protruding section of each through-insulation component; the locking component includes an adjustment state and a locking state; in the adjustment state of the locking component, the locking position of the locking component on the through-insulation component can be adjusted according to the thickness of the first insulation module 1; in the locking state of the locking component, the locking component is fixed on the protruding section of the through-insulation component, and the locking component abuts against the side of the first insulation module 1 away from the object to be insulated; wherein, the number of protruding sections of the through-insulation component is the same as the number of locking components.

[0075] In the heat absorber insulation structure of this utility model, the first insulation module 1 wraps around part or all of the object to be insulated, ensuring that the first insulation module 1 is tightly attached to the object and minimizing contact between the object and the heat transfer medium (such as air), thus preventing heat loss. At least one insulation module fixing component is provided to ensure the first insulation module 1 is tightly wrapped around the object. The insulation module fixing component includes a through-hole component and at least one locking component. The through-hole component includes an internal section and at least one protruding section. The internal section is located within the first insulation module 1 or installed on the object to be insulated. The main function of the internal section is to stabilize the entire through-hole component, allowing only slight movement or preventing complete movement. This design provides a locking condition for the locking component. The protruding section extends outward through the first insulation module 1, providing a mounting base for the locking component. The locking component includes an adjustment state and a locking state. In the adjustment state, the locking position of the locking component on the through-member can be adjusted according to the thickness of the first insulation module 1. In the locking state, the locking component is fixed to the protruding section of the through-member, and the locking component abuts against the side of the first insulation module 1 away from the object to be insulated. In existing technical solutions, the insulation module is usually fixed to the object to be insulated by adhesive. However, when the temperature of the object to be insulated is high, the adhesive between the insulation module and the object to be insulated may fail, resulting in the insulation module falling off. The insulation module fixing component can press the first insulation module 1, which is wrapped around the outside of the object to be insulated, to be tightly attached to the object to be insulated. This not only reduces the heat loss in the object to be insulated but also effectively avoids the problems in the prior art. Furthermore, the insulation module fixing component can also prevent the first insulation module 1 from moving under external forces (such as vibration).

[0076] It should be noted that, in this embodiment of the technical solution, the shape, size, and installation method of the built-in segment are not limited. They can be designed specifically according to actual conditions. Similarly, in this embodiment of the technical solution, the number and direction of the protruding segments are not limited. They can also be designed specifically according to actual conditions, as long as the cooperation between the inserting and locking components can fix the first insulation module 1 to the object to be insulated. However, two alternative examples are given in several implementation schemes. For instance, when the built-in segment is located in the first insulation module 1, and there are two protruding segments extending in opposite directions and penetrating the first insulation module 1, the two locking components are respectively located on the two protruding segments. Two locking components press the first insulation modules 1 on both sides against the object to be insulated, so that the first insulation modules 1 on both sides are attached to the object to be insulated. In this way, multiple insulation module fixing components can make the entire first insulation module 1 wrap around the object to be insulated. For example, when the built-in section is set on the object to be insulated and there is one protruding section that extends and penetrates the first insulation module 1, the locking component is set on the protruding section. The locking component presses the first insulation module 1 inward (i.e. towards the object to be insulated) against the object to be insulated, so that the first insulation module 1 at that point is attached to the object to be insulated. In this way, multiple insulation module fixing components can make the entire first insulation module 1 wrap around the object to be insulated.

[0077] In an embodiment of this technical solution, the built-in section of the through-feeding member is installed on the object to be insulated, the extended section of the through-feeding member passes through the first insulation module 1, and a locking member is installed on the extended section of the through-feeding member; wherein, the insulation module fixing component includes a through-feeding member and a locking member, and the through-feeding member includes a built-in section and an extended section.

[0078] Specifically, in each insulation module fixing assembly, the through-feed member includes an internal section and an external section. The internal section is fixedly disposed on the object to be insulated, and the external section extends through and penetrates the first insulation module 1. A locking member is provided on the external section. The locking member presses the first insulation module 1 inward (i.e., towards the object to be insulated), causing the first insulation module 1 to abut against the object. This design allows one end of the through-feed member to be fixed, providing stable support for the locking member to press the first insulation module 1. Several alternative examples are given in various embodiments. For instance, the through-feed member is a threaded rod, one end of which is fixed to the object to be insulated, and the other end penetrates the first insulation module 1. The locking member is a locking nut, which is installed on the threaded rod from one side through which the first insulation module 1 passes. By rotating the locking nut, the first insulation module 1 is pressed tightly against the object to be insulated. Alternatively, the through-feed member can be an insulation nail, and the locking member can be a self-locking piece.

[0079] It should be noted that this application does not limit the connection method between the penetrating component and the object to be insulated. The specific design can be carried out according to the actual situation. The connection method between the penetrating component and the object to be insulated can be one of the following methods: welding, integral molding, fastener connection or snap-fit, etc.

[0080] In an embodiment of this technical solution, the first insulation module 1 includes a first insulation layer and a first protective layer. The first insulation layer is attached to the outside of the object to be insulated, and the first protective layer is disposed on the outside of the first insulation layer. In the locked state of the locking member, the locking member is fixedly disposed on the protruding section of the through member, and the locking member abuts against the first protective layer.

[0081] Specifically, the first insulation module 1 includes a first insulation layer and a first protective layer. The first insulation layer wraps around the outside of the object to be insulated, while the first protective layer wraps around the outside of the first insulation layer. Typically, the first protective layer is made of metal (such as stainless steel) to effectively protect the first insulation layer and prevent damage that could compromise its insulation performance. In this embodiment, the first protective layer is made of galvanized iron sheet and completely wraps around the first insulation layer, further improving the overall insulation performance of the first insulation module 1. The material of the first insulation layer can be selected according to actual conditions, such as rock wool, polyurethane foam, or glass wool, and is not limited here.

[0082] Example 2

[0083] This utility model also provides a heat absorber tube screen structure, which adopts the heat absorber insulation structure in at least one of the technical solutions in Embodiment 1, and further includes a heat absorber tube screen 9. The heat absorber tube screen 9 is configured to heat the medium flowing in the heat absorber tube screen 9 through sunlight. The heat absorber tube screen 9 as a whole includes at least one light-receiving part and at least one light-shielding part. The light-shielding part of the heat absorber tube screen 9 is provided with a heat absorber insulation structure. The object to be insulated is the heat absorber tube screen 9, and the insulation space is configured to accommodate a portion of the structure of the heat absorber tube screen 9. The light-receiving part is the part that receives sunlight when the heat absorber tube screen 9 is in the working state. The light-shielding part is the part that does not receive sunlight when the heat absorber tube screen 9 is in the working state.

[0084] It should be noted that when the receiver tube panel 9 is in working condition, it means that after all the components of the receiver on the heat exchanger tower (including the receiver tube panel 9) are installed in place, the heliostats in the heliostat field reflect sunlight onto the receiver tube panel 9. At this time, the receiver tube panel 9 can use the sunlight reflected by the heliostats to heat the medium flowing inside the receiver tube panel 9 (such as molten salt), and thus the receiver tube panel 9 is in working condition.

[0085] In the absorber tube screen structure of this utility model, the light-receiving part and the light-shielding part are distinguished by whether the absorber tube screen 9 is exposed to sunlight when it is in the working state. The light-receiving part is the part of the absorber tube screen 9 that is exposed to sunlight (i.e., receives solar radiation) when it is in the working state, and the light-shielding part is the part of the absorber tube screen 9 that is not exposed to sunlight (i.e., does not receive solar radiation) when it is in the working state. In the prior art, in order to maintain the temperature of the medium in the absorber tube screen 9, a heat-insulating structure is usually provided in the light-shielding part of the absorber tube screen 9. This heat-insulating structure is usually arranged around the light-shielding part to form a heat-insulating structure. While existing heat exchangers can form an insulated box, gaps exist between the light-shielding portion of the absorber tube screen 9 and the structure of the insulated box, resulting in poor insulation performance. The technical solution of this application addresses this issue by placing the first insulation module 1 against the absorber tube screen 9. Compared to the traditional method of enclosing an external insulated box, this first insulation module 1 reduces the amount of insulation material used and significantly reduces redundant space and gaps between the first insulation module 1 and the light-shielding portion of the absorber tube screen 9. This reduces heat loss due to the flow of the heat transfer medium (such as air) and improves the heat collection performance of the absorber tube screen structure. It should be noted that this application does not limit the number or position of the light-shielding portion on the absorber tube screen 9, nor does it limit the number or position of the light-receiving portion; both can be designed according to actual conditions. Furthermore, this application does not limit the number of heat absorber insulation structures used in any of the technical solutions in Embodiment 1, as long as at least one heat absorber tube screen 9 has a heat absorber insulation structure as in any of the technical solutions in Embodiment 1.

[0086] In this embodiment of the technical solution, the absorber tube screen 9 is divided into an inlet section, a middle section, and an outlet section along the flow direction of the medium; the light-shielding part with an absorber insulation structure is a characteristic light-shielding part; the middle section of the absorber tube screen 9 is a light-receiving part, the inlet section of the absorber tube screen 9 is a characteristic light-shielding part, and the outlet section of the absorber tube screen 9 is a characteristic light-shielding part. It should be noted that the specific structure of the absorber tube screen 9 is not limited here and can be designed according to actual conditions.

[0087] Further, see Figure 1 , Figure 3As shown, the absorber tube panel 9 includes an upper header 4, a lower header 5, and several absorber tubes 6. The absorber tubes 6 are all located between the upper header 4 and the lower header 5. The medium inlet of all absorber tubes 6 is connected to the upper header 4, and the medium outlet of all absorber tubes 6 is connected to the lower header 5. Each absorber tube 6 includes a first section 61, a second section 62, and a third section 63 sequentially along the direction of medium flow. The upper header 4 and the first section 61 of all absorber tubes 6 form the inlet section of the absorber tube panel 9, and the lower header 5 and the third section 63 of all absorber tubes 6 form the outlet section of the absorber tube panel 9. The upper header group consists of the upper header 4 of the absorber tube screen and the first pipe section 61 of all the absorber pipes 6, while the lower header group consists of the lower header 5 of the absorber tube screen and the third pipe section of all the absorber pipes 6. Since the upper header group and the lower header group are both covered with the first insulation module 1, the first insulation module 1 wraps the header and part of the absorber pipes 6 into a whole for insulation. The structure is simple and the insulation cost is low. Furthermore, since the first insulation module 1 is set close to the header and the absorber pipes 6, compared with the traditional method of surrounding the outside with an insulation box, the first insulation module 1 can reduce the amount of insulation material used, and at the same time greatly reduce the redundant space and gaps between the first insulation module 1 and the upper header group (or the lower header group), thereby reducing the heat loss caused by the flow of heat transfer medium (such as air).

[0088] In an embodiment of this technical solution, a heating element 7 is also included, which is sandwiched between the heat absorber tube screen 9 and the first heat preservation module 1.

[0089] Specifically, such as Figure 2 and Figure 4 As shown, the tower-type solar collector tube panel structure also includes a heating element 7, which is sandwiched between the absorber tube panel 9 and the first insulation module 1. The heating element 7 can release heat, thereby heating the medium flowing in the absorber tube panel 9. In this embodiment, the heating element 7 is an electric heat tracing device commonly used in the art. The heating element 7 is wound around the absorber tube 6 and the header, and then the first insulation module 1 is wrapped around the outside of the heating element 7 and the upper header group (or lower header group). Preferably, heating elements 7 are provided on both the upper header group and the lower header group. It should be noted that this application does not limit the number or specific installation position of the heating element 7, and the design can be made according to the actual situation.

[0090] In this embodiment of the technical solution, the outer surface of the first insulation module 1 is coated with a reflective coating. Specifically, in this embodiment, in order to enhance the light protection capability of the first insulation module 1, the outer surface of the first insulation module 1 is coated with a reflective coating. The reflective coating is uniformly coated on the outer surface of the first protective layer, and the reflective coating can efficiently reflect sunlight.

[0091] Example 3

[0092] This utility model provides a tower-type solar absorber, which includes at least one absorber tube screen structure according to any one of the two embodiments and at least one first structure 10; one absorber tube screen structure and at least one first structure 10 are designated as a first component group; in each absorber tube screen structure, when the absorber tube screen 9 is in the working state, the light-receiving part includes a light-receiving surface and a back-lighting surface; in each first component group, the first structure is disposed near the characteristic light-shielding part of the absorber tube screen structure, and the first structure is located on the light-receiving surface side of the absorber tube screen 9, and the first structure is configured to block sunlight for the characteristic light-shielding part of the absorber tube screen structure when the absorber tube screen 9 is in the working state; wherein, the characteristic light-shielding part of the absorber tube screen structure corresponds one-to-one with the first structure.

[0093] In the tower-type solar absorber of this utility model, when the absorber tube screen 9 is in working condition, the light-receiving part of the absorber tube screen 9 consists of a light-receiving surface and a back-lighting surface. The light-receiving surface is the side of the absorber tube screen 9 that is directly irradiated by sunlight when it is in working condition, while the back-lighting surface is the side of the absorber tube screen 9 that is not directly irradiated by sunlight when it is in working condition. The first structure 10 is disposed in front of the characteristic light-shielding part of the absorber tube screen structure to prevent sunlight from directly irradiating the characteristic light-shielding part of the absorber tube screen structure. The characteristic light-shielding part of the absorber tube screen structure corresponds one-to-one with the first structure 10. Typically, the first structure 10 is the absorber protection structure, which is used to reflect sunlight deflected by the heliostat and / or sunlight reflected by the absorber. In this application, the first structure 10 is not specifically limited, as long as it can block sunlight from the characteristic light-shielding part of the absorber tube screen structure when the absorber tube screen 9 is in working condition. Preferably, the first structure 10 is a heat absorber protection structure.

[0094] It should be noted that, normally, each first structure 10 is a separate component, respectively disposed on the front side of each characteristic light-shielding part of the absorber tube screen structure, corresponding one-to-one with the characteristic light-shielding parts of the absorber tube screen structure. However, in other embodiments of this technical solution, multiple first structures 10 can be multiple parts of the entire component, and these parts are respectively disposed on the front side of each characteristic light-shielding part of the absorber tube screen structure, corresponding one-to-one with the characteristic light-shielding parts of the absorber tube screen structure. This application does not impose specific limitations on the specific shape and size of the first structure 10, and it can be designed according to the actual situation.

[0095] In the embodiments of this technical solution, see Figure 1 , Figure 3As shown, the first component group also includes a second insulation module 2; in each first component group, the middle section of the absorber tube screen 9 is the light-receiving part, the inlet section of the absorber tube screen 9 is the characteristic light-shielding part, and the outlet section of the absorber tube screen 9 is the characteristic light-shielding part; in each first component group, the second insulation module 2 abuts against the backlight surface of the absorber tube screen 9, or the second insulation module 2 abuts against the backlight surface of the absorber tube screen 9; wherein, the second insulation module 2 is configured to insulate the backlight surface of the light-receiving part; wherein, in each first component group, one end of the second insulation module 2 abuts against the first insulation module 1 on the backlight side of the inlet section of the absorber tube screen 9, and the other end of the second insulation module 2 abuts against the first insulation module 1 on the backlight side of the outlet section of the absorber tube screen 9. In this embodiment, the material of the second insulation module 2 is the same as that of the first insulation module 1; the second insulation module 2 abuts against the backlight surface of the absorber tube screen 9 (i.e., the second insulation module 2 abuts against the backlight surface of the absorber tube screen 9, without being connected to the absorber tube screen 9), or the second insulation module 2 abuts against the backlight surface of the absorber tube screen 9 (i.e., the second insulation module 2 abuts against the backlight surface of the absorber tube screen 9, with a connection to the absorber tube screen 9), for heat preservation of the backlight surface of the light-receiving part; since the second insulation module 2 abuts against the first insulation module 1, the second insulation module 2, the first insulation module 1 on the inlet section of the absorber tube screen 9 and the first insulation module 1 on the outlet section of the absorber tube screen 9 form a whole, thus maximizing the heat preservation effect at the joint between the two and preventing rainwater and cold air from seeping in from the joint.

[0096] In the embodiments of this technical solution, see Figures 1 to 4As shown, the first component group also includes two third insulation modules 3; in each first component group, the first structure 10 located at the inlet section of the absorber tube screen 9 is designated as the first first structure 100, and the first structure 10 located at the outlet section of the absorber tube screen 9 is designated as the second first structure 200; in each first component group, with the orientation of the light-receiving surface of the light-receiving part as the first direction, the middle section of the absorber tube screen 9 is divided into a first middle section, a second middle section, and a third middle section; wherein, the first middle section is a preset portion of the middle section of the absorber tube screen 9 near the inlet section of the absorber tube screen 9, and the third middle section is a preset portion of the middle section of the absorber tube screen 9 near the outlet section of the absorber tube screen 9. In each component group, along the first direction, a portion of the first structure 100 is positioned at the front of the first middle section, and a portion of the second structure 200 is positioned at the front of the third middle section. In each component group, the gap between the first middle section and the first structure 100 is designated as the first gap to be sealed, and the gap between the third middle section and the second structure 200 is designated as the second gap to be sealed. Two third insulation modules 3 are respectively installed at the first and second gaps to be sealed. In each component group, one side of the third insulation module 3 abuts against the absorber tube screen 9, and the other side of the third insulation module 3 abuts against the first structure 10. Figure 2 and Figure 4 As shown, two third insulation modules 3 are used to fill the first and second gaps to be sealed, so as to ensure that rainwater and dust will not seep in through the first and second gaps to be sealed, thereby damaging the heat absorber insulation structure.

[0097] It should be noted that the first direction is the direction in which the illumination surface of the absorber tube screen 9 faces. In this case, the illumination surface of the absorber tube screen 9 may be a plane or an irregular surface. For a plane, the first direction is the orientation of the illumination surface of the light-receiving part. However, when the illumination surface of the absorber tube screen 9 is an irregular surface, the entire illumination surface of the light-receiving part cannot be considered as a whole. For any point on the illumination surface of the light-receiving part, the first direction is the normal vector of the illumination surface of the light-receiving part at that point. Therefore, (along the first direction...) The partial structure of the first structure 100 (located on the front side of the first middle section) can be understood as the front side of the first middle section and the farthest end of the first middle section in the first direction (i.e., the normal vector of the light-receiving surface of the light-receiving part at this point) being blocked by the partial structure of the first structure 100. The same applies to (the partial structure of the second structure 200 located on the front side of the third middle section along the first direction). The farthest end of the first middle section is the boundary point between the first middle section and the second middle section, and the farthest end of the third middle section is the boundary point between the third middle section and the second middle section. Of course, the size and range of the middle section of the absorber tube screen 9 in this application are not limited, and can be designed according to the actual situation; and the size and range of the preset part in "the first middle section is the preset part of the middle section of the absorber tube screen 9 near the inlet section of the absorber tube screen 9, and the third middle section is the preset part of the middle section of the absorber tube screen 9 near the outlet section of the absorber tube screen 9" are not limited, and can be designed according to the actual situation.

[0098] See Figures 1 to 4 As shown, the absorber tube panel 9 includes an upper header 4, a lower header 5, and several absorber tubes 6. The absorber tubes 6 are all located between the upper header 4 and the lower header 5. The medium inlet of all absorber tubes 6 is connected to the upper header 4, and the medium outlet of all absorber tubes 6 is connected to the lower header 5. Each absorber tube 6 includes a first section 61, a second section 62, and a third section 63 sequentially along the direction of medium flow. The upper header 4 and the first section 61 of all absorber tubes 6 form the inlet section of the absorber tube panel 9, and the lower header 5 and the third section 63 of all absorber tubes 6 form the outlet section of the absorber tube panel 9. At this time, the first middle section includes the preset portion of the second tube segment 62 of all heat-absorbing tubes 6 near the first tube segment 61, and the third middle section includes the preset portion of the second tube segment 62 of all heat-absorbing tubes 6 near the third tube segment 63.

[0099] Furthermore, the third insulation module 3 includes an embedded part 32 and a third insulation structure 31; one end of the embedded part 32 is installed on the absorber tube screen 9, and the length direction of the embedded part 32 extends towards the first structure 10. The third insulation structure 31 is installed on the embedded part 32 by fasteners. The third insulation structure 31 includes a third insulation layer 311 and a third protective layer 312. The third protective layer 312 is disposed on the outside of the third insulation layer 311 and abuts against the first structure 10. The third insulation layer 311 abuts against the absorber tube screen 9. In the first direction, the embedded part 32 is disposed on the rear side of the first structure 10. Because the heat absorber tube panel 9 experiences significant expansion differences within its heat absorber tubes 6 during operation, the third insulation structure 31, comprising a third insulation layer 311 and a third protective layer 312, allows the softer third insulation layer 311 to adhere to the heat absorber tubes 6, avoiding the risk of damage to the heat absorber tubes from hard seals. Specifically, see [link to relevant documentation]. Figure 2 , Figure 4 As shown, the third insulation structure 31 includes a third insulation layer 311 and a third protective layer 312. The fixing method of the third protective layer 312 can be selected according to the actual situation, such as adhering it to the surface of the third insulation layer 311 or connecting it to the surface of the third insulation layer 311 in a detachable manner; in this embodiment, as Figure 2 and Figure 4 As shown, the tower-type solar absorber also includes an embedded part 32. One end of the embedded part 32 is fixedly connected to the heat absorption pipe 6, and the third protective layer 312 is connected to the extended end of the embedded part 32 by fasteners. The cross-section of the third protective layer 312 is L-shaped. The short side of the third protective layer 312 is connected to the embedded part 32 by bolts and nuts, and the long side of the third protective layer 312 is used to abut against the first structure 10. The embedded part 32 can be welded to the heat absorption pipe 6, or it can be processed simultaneously with the heat absorption pipe 6 and the two are integrally formed. Among them, multiple embedded parts 32 can be set one-to-one with the number of heat absorption pipes 6, multiple can be set at intervals along the arrangement direction of the heat absorption pipes 6, or only one can be set, as long as the third protective layer 312 can be fixedly connected to the heat absorption pipe 6 and ensure that the third protective layer 312 can fill the first gap to be sealed and / or the second gap to be sealed.

[0100] Preferred options, see Figures 1 to 4 As shown, the side of the embedded part 32 away from the third insulation structure 31 abuts against the first insulation module 1 on the side of the light-receiving surface of the inlet section of the absorber tube screen 9, and / or, the side of the embedded part 32 away from the third insulation structure 31 abuts against the first insulation module 1 on the side of the light-receiving surface of the outlet section of the absorber tube screen 9.

[0101] To prevent the third protective layer 312 from overheating and damaging the electrical components and cables inside the header assembly (i.e., the upper header assembly or the lower header assembly), the surface of the third protective layer 312 is coated with a reflective coating. The reflective coating can efficiently reflect sunlight, thereby preventing the exposed surface of the third protective layer 312 from overheating due to the absorption of solar radiation.

[0102] In embodiments of this technical solution, a plurality of fourth insulation modules are also included. In any two adjacent No. 1 component groups, a fourth insulation module is provided between the inlet sections of the two absorber tube panels 9, and a fourth insulation module is provided between the outlet sections of the two absorber tube panels 9. Specifically, a fourth insulation module is provided between two adjacent tower-type solar collector tube panel structures. The material of the fourth insulation module is the same as that of the first insulation module 1. The fourth insulation module makes all the upper header groups of the entire tower-type solar absorber form a single insulation unit, and all the lower header groups also form a single insulation unit, thereby further improving the sealing and insulation performance of the tower-type solar absorber.

[0103] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heat absorber insulation structure, characterized in that, include: The first insulation module (1) includes an insulation space, which is configured to accommodate a portion of the structure of the object to be insulated, or to accommodate the entire structure of the object to be insulated. The first insulation module (1) is wrapped around the outside of the object to be insulated. At least one insulation module fixing component is configured to fix the first insulation module (1) to the object to be insulated. The insulation module fixing component includes a through member and at least one locking member. The through member includes an internal section and at least one protruding section. The built-in section of the through-feeding component is disposed in the first insulation module (1), or the built-in section of the through-feeding component is installed on the object to be insulated; The protruding section of the through-feeding member passes through the first heat insulation module (1), and the locking member is installed on the protruding section of each through-feeding member; The locking component includes an adjustment state and a locking state; In the adjusted state of the locking member, the locking position of the locking member on the through member can be adjusted according to the thickness of the first heat insulation module (1); In the locked state of the locking member, the locking member is fixed to the protruding section of the through member, and the locking member abuts against the side of the first insulation module (1) away from the object to be insulated; The number of protruding sections of the inserting member is the same as the number of locking members.

2. The heat absorber insulation structure according to claim 1, characterized in that, The built-in section of the through-feeding member is installed on the object to be insulated, the protruding section of the through-feeding member passes through the first insulation module (1), and the locking member is installed on the protruding section of the through-feeding member; The insulation module fixing assembly includes a through-feed member and a locking member, wherein the through-feed member includes a built-in section and a protruding section.

3. The heat absorber insulation structure according to claim 1, characterized in that, The first insulation module (1) includes a first insulation layer and a first protective layer. The first insulation layer is attached to the outside of the object to be insulated, and the first protective layer is disposed on the outside of the first insulation layer. In the locked state, the locking member is fixedly disposed on the protruding section of the through member, and the locking member abuts against the first protective layer.

4. A heat absorber tube screen structure, characterized in that, The heat absorber insulation structure according to at least one of claims 1-3 further includes a heat absorber tube screen (9), which is configured to heat the medium flowing in the heat absorber tube screen (9) by sunlight; The absorber tube screen (9) as a whole includes at least one light-receiving part and at least one light-shielding part, and at least one light-shielding part of the absorber tube screen (9) is provided with the absorber insulation structure. Wherein, the object to be insulated is the heat absorber tube screen (9), the heat insulation space is configured to accommodate a portion of the structure of the heat absorber tube screen (9), the light-receiving part is the part that receives sunlight when the heat absorber tube screen (9) is in working state, and the light-shielding part is the part that does not receive sunlight when the heat absorber tube screen (9) is in working state.

5. The absorber tube screen structure according to claim 4, characterized in that, The absorber tube panel (9) is divided into an inlet section, a middle section and an outlet section along the flow direction of the medium; The light-shielding part, which is provided with the heat-absorbing insulation structure of the heat absorber, is a characteristic light-shielding part; The middle section of the absorber tube screen (9) is the light-receiving part, the inlet section of the absorber tube screen (9) is the characteristic light-shielding part, and the outlet section of the absorber tube screen (9) is the characteristic light-shielding part.

6. The absorber tube screen structure according to claim 5, characterized in that, The absorber tube panel (9) includes an upper header (4), a lower header (5), and several absorber tubes (6). Several heat-absorbing tubes (6) are disposed between the upper header (4) of the heat absorber tube screen and the lower header (5) of the heat absorber tube screen. The medium input end of all the heat-absorbing tubes (6) is connected to the upper header (4) of the heat absorber tube screen, and the medium output end of all the heat-absorbing tubes (6) is connected to the lower header (5) of the heat absorber tube screen. Each of the heat-absorbing tubes (6) includes a first tube section (61), a second tube section (62), and a third tube section (63) in sequence along the direction of medium flow. The upper header (4) of the absorber tube screen and the first pipe section (61) of all the absorber tubes (6) form the inlet section of the absorber tube screen (9), and the lower header (5) of the absorber tube screen and the third pipe section (63) of all the absorber tubes (6) form the outlet section of the absorber tube screen (9).

7. The absorber tube screen structure according to claim 4, characterized in that, It also includes a heating element (7), which is sandwiched between the heat absorber tube screen (9) and the first heat insulation module (1), and / or, the outer surface of the first heat insulation module (1) is coated with a reflective coating.

8. A tower-type solar thermal absorber, characterized in that, It includes at least one absorber tube screen structure as described in any one of claims 5-7 and at least one first structure (10). The first component group consists of one of the heat absorber tube screen structures and at least one of the first structures (10); In each of the heat absorber tube screen structures, when the heat absorber tube screen (9) is in the working state, the light-receiving part includes a light-receiving surface and a back-lighting surface; In each of the first component groups, the first structure (10) is disposed near the characteristic light-shielding part of the absorber tube screen structure, and the first structure (10) is located on the light-shielding side of the absorber tube screen (9). The first structure (10) is configured to shield the characteristic light-shielding part of the absorber tube screen structure from sunlight when the absorber tube screen (9) is in working state. The light-shielding part of the absorber tube screen structure corresponds one-to-one with the first structure (10).

9. The tower-type solar absorber according to claim 8, characterized in that, The first component group also includes a second insulation module (2); In each of the first component groups, the middle section of the absorber tube screen (9) is the light-receiving part, the inlet section of the absorber tube screen (9) is the characteristic light-shielding part, and the outlet section of the absorber tube screen (9) is the characteristic light-shielding part. In each of the first component groups, the second heat insulation module (2) abuts against the backlight surface of the heat absorber tube screen (9), or the second heat insulation module (2) abuts against the backlight surface of the heat absorber tube screen (9); wherein, the second heat insulation module (2) is configured to insulate the backlight surface of the light-receiving part; In each of the first component groups, one end of the second insulation module (2) abuts against the first insulation module (1) located on the back side of the inlet section of the absorber tube screen (9), and the other end of the second insulation module (2) abuts against the first insulation module (1) located on the back side of the outlet section of the absorber tube screen (9).

10. The tower-type solar absorber according to claim 8, characterized in that, The first component group also includes two third insulation modules (3); In each of the first component groups, the first structure (10) disposed at the inlet section of the absorber tube screen (9) is designated as the first first structure (100), and the first structure (10) disposed at the outlet section of the absorber tube screen (9) is designated as the second first structure (200). In each of the first component groups, with the orientation of the light-receiving surface of the light-receiving part as the first direction, the middle section of the absorber tube screen (9) is divided into a first middle section, a second middle section, and a third middle section; wherein, the first middle section is a preset part of the middle section of the absorber tube screen (9) near the inlet section of the absorber tube screen (9), and the third middle section is a preset part of the middle section of the absorber tube screen (9) near the outlet section of the absorber tube screen (9); In each of the first component groups, along the first direction, a portion of the first structure (100) is disposed on the front side of the first middle section, and a portion of the second structure (200) is disposed on the front side of the third middle section; In each of the first component groups, the gap between the first middle section and the first structure (100) is the first gap to be sealed, and the gap between the third middle section and the second structure (200) is the second gap to be sealed. The two third insulation modules (3) are respectively installed at the first gap to be sealed and the second gap to be sealed. In each of the first component groups, one side of the third insulation module (3) abuts against the heat absorber tube screen (9), and the other side of the third insulation module (3) abuts against the first structure (10).

11. The tower-type solar absorber according to claim 10, characterized in that, The third insulation module (3) includes an embedded part (32) and a third insulation structure (31); One end of the embedded part (32) is installed on the heat absorber tube screen (9). The length direction of the embedded part (32) extends towards the first structure (10). The third insulation structure (31) is installed on the embedded part (32) by fasteners. The third insulation structure (31) includes a third insulation layer (311) and a third protective layer (312). The third protective layer (312) is disposed on the outside of the third insulation layer (311). The third protective layer (312) abuts against the first structure (10). The third insulation layer (311) abuts against the heat absorber tube screen (9). Along the first direction, the embedded part (32) is disposed on the rear side of the first structure (10).

12. The tower-type solar absorber according to claim 9, characterized in that, It also includes several fourth insulation modules. In any two adjacent first component groups, the fourth insulation module is provided between the inlet sections of the two absorber tube screens (9) and between the outlet sections of the two absorber tube screens (9).

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