Temperature measuring system of tower type photo-thermal heat absorber

Abstract

The invention relates to the technical field of tower type photo-thermal heat absorbers, in particular to a temperature measuring system of a tower type photo-thermal heat absorber. Comprising a bracket, a plurality of first connecting pieces, a plurality of second connecting pieces and a thermocouple, the multiple first connecting pieces can be fixed to the first sides of the multiple heat absorption pipes arranged in parallel in a one-to-one correspondence mode. The support is located on the first side of the heat absorption pipes. The plurality of second connecting pieces are used for connecting the plurality of first connecting pieces to the bracket in a one-to-one correspondence manner; a heat collection block of the thermocouple is fixed on a first side of a heat absorption pipe; electric wires of the thermocouples are positioned in gaps between two adjacent second connecting pieces and spaces between the second connecting pieces and the brackets; the first connecting pieces and the thermocouples can synchronously ascend and descend relative to the support along with the heat absorption pipes. The thermocouple has the advantages of being convenient to install, high in temperature measurement precision and capable of avoiding damage to wires of the thermocouple.

Description

Technical Field

[0001] The present invention relates to the technical field of tower photothermal absorbers, and in particular to a temperature measurement system of a tower photothermal absorber. Background Art

[0002] A tower solar thermal absorber is a device that absorbs solar energy. To monitor the operating temperature of its absorber tube, a thermocouple needs to be installed on the absorber tube. However, in common tower solar thermal absorbers, in order to avoid heat loss and structural damage to the absorber tube, a metal protective plate and a heat preservation plate are fixed on the back of the tube panel composed of multiple absorber tubes from near to far. During installation, if the thermocouple is directly passed through the heat preservation plate and the metal protective plate and then fixed on the tube panel, the tube panel will expand due to heat and contract due to heat release, which will pull the thermocouple wire up and down, causing damage to the wire, and the assembly method is difficult to achieve. Therefore, it is common to perforate the insulation layer and insert a sleeve, insert the thermocouple into the sleeve and fit it on the metal protection plate to prevent the thermocouple from being broken by the tube screen. However, this method makes it difficult to achieve a close fit between the thermocouple and the metal protection plate, resulting in a large deviation between the measured temperature of the metal protection plate and the actual value, and a deviation between the metal protection plate and the tube screen temperature. Therefore, the accuracy of the tube screen temperature measured by the thermocouple is low, and the assembly method is also more complicated. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a temperature measurement system for a tower-type photothermal absorber, which solves the technical problems that the existing thermocouples used to measure the temperature of the absorber tube have a complex assembly method and low temperature measurement accuracy.

[0005] (II) Technical solution

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] An embodiment of the present invention provides a temperature measurement system for a tower-type photothermal absorber, comprising a bracket, a plurality of first connecting members, a plurality of second connecting members, and a thermocouple;

[0008] The plurality of first connecting members can be fixed one by one on the first side of the plurality of heat absorbing tubes arranged in parallel; the bracket is located on the first side of the plurality of heat absorbing tubes; the plurality of second connecting members connect the plurality of first connecting members to the bracket one by one;

[0009] The heat collecting block of the thermocouple is fixed on the first side of the heat absorbing tube; the wire of the thermocouple is located in the gap between two adjacent second connecting members and in the space between the second connecting member and the bracket;

[0010] The plurality of first connecting members and the thermocouples can be synchronously moved up and down relative to the bracket along with the plurality of heat absorbing tubes.

[0011] According to the present invention, a plurality of parallel and spaced connection holes are provided on the bracket, and a connection hole is provided on the first connection member;

[0012] The second connecting member is an insertion rod, and a plurality of the second connecting members can be inserted into the connection holes on the plurality of the first connecting members and the plurality of the connection holes on the bracket in a one-to-one correspondence, so as to connect the plurality of the first connecting members to the bracket, and enable the plurality of the first connecting members and the thermocouples to be able to rise and fall synchronously with the plurality of the heat absorption tubes relative to the bracket.

[0013] According to the present invention, the bracket is a frame body with a C-shaped cross section, the open end of the bracket can face the first side of the plurality of heat absorbing tubes, and the opposite ends of the bracket are respectively provided with a plurality of first connection holes arranged in parallel and a plurality of second connection holes arranged in parallel and a plurality of second connection holes, and the plurality of first connection holes and the plurality of second connection holes correspond to each other one by one;

[0014] A third connecting hole is provided on the first connecting member;

[0015] The second connecting member is a plug pin, and both ends of the second connecting member are provided with plug holes perpendicular to the axis of the second connecting member;

[0016] The plurality of second connecting members can be provided with the plurality of first connecting holes, the third connecting holes on the plurality of first connecting members, and the plurality of second connecting holes in a one-to-one correspondence, and the insertion holes at both ends of each second connecting member can extend out of the two ends of the bracket and can be inserted with limit members to connect the plurality of first connecting members to the bracket, and enable the plurality of first connecting members and the thermocouples to be able to rise and fall synchronously with the plurality of heat absorption tubes relative to the bracket.

[0017] According to the present invention, the bracket includes a vertical plate and two horizontal plates. The two horizontal plates are relatively arranged at the upper and lower ends of the vertical plate, and the two horizontal plates can be detachably connected to the vertical plate.

[0018] According to the present invention, the first connecting member includes a connecting plate and a sleeve, one side of the connecting plate is fixed to the corresponding heat absorbing tube, and the other side is fixed to the sleeve, and the inner cavity of the sleeve forms the third connecting hole.

[0019] According to the present invention, when the heat collecting block is fixed to the first side of one of the heat absorbing tubes, the wire plugged into the heat collecting block can pass through the gap between two adjacent first connecting members and be placed on a side of the plurality of first connecting members away from the heat absorbing tube;

[0020] When multiple second connecting members connect multiple first connecting members to the bracket one by one, the wire is located in the gap between two adjacent first connecting members and the space between the first connecting member and the bracket, and can move downward to the gap between two adjacent second connecting members and the space between the second connecting member and the bracket under the action of its own weight.

[0021] According to the present invention, the number of the brackets is multiple, and the multiple brackets can be arranged at intervals along the axial direction of the multiple heat absorbing tubes, and each of the brackets corresponds to at least one thermocouple, so that the main bodies of the multiple thermocouples are fixed at different heights of the multiple heat absorbing tubes;

[0022] One of the brackets corresponds to a plurality of thermocouples, and the heat collecting blocks of the plurality of thermocouples are fixed on the plurality of heat absorbing tubes in a one-to-one correspondence.

[0023] According to the present invention, it also includes a protective plate and a heat-insulating plate;

[0024] A through hole is provided on the protective plate, the protective plate is located on the first side of the plurality of heat absorbing tubes, and the through hole on the protective plate is used to pass the bracket; the thermal insulation plate is fixedly provided on the side of the protective plate away from the heat absorbing tube; a groove is provided on the thermal insulation plate, the groove is connected to the through hole and forms an accommodation space for accommodating the bracket.

[0025] According to the present invention, a control system is also included;

[0026] One end of the electric wire away from the heat collecting block is connected to the control system;

[0027] The control system is used to receive the temperature of the heat absorption tube monitored by the thermocouple.

[0028] According to the present invention, the first connecting member and the heat collecting block of the thermocouple are both welded to the heat absorbing tube.

[0029] (III) Beneficial effects

[0030] The beneficial effects of the temperature measurement system of the tower photothermal absorber of the present invention are as follows:

[0031] Easy to install: The thermocouple as a whole does not need to pass through the interior of any structural member, which does not affect the installation of a protective plate for protecting the heat absorbing tube from damage, an insulation plate for preventing heat loss from the heat absorbing tube, and a supporting frame on the side of the bracket away from the heat absorbing tube.

[0032] High temperature measurement accuracy: The heat collecting block of the thermocouple is fixed on the heat absorbing tube, which directly monitors the temperature of the heat absorbing tube with high monitoring accuracy.

[0033] Avoid damage to the thermocouple wires: When the heat absorption tube absorbs heat and stretches axially and releases heat and contracts axially, the first connector and the thermocouple can be moved up and down relative to the bracket synchronously with the multiple heat absorption tubes, and the gap between two adjacent second connectors and the space between the second connector and the bracket provide space for the wires to move up and down, so as to avoid other structural parts restricting the movement of the wires when the wires move, and can also effectively avoid the wires from contacting with other structural parts and being damaged when they shift. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional schematic diagram of the temperature measurement system of the tower type photothermal absorber of the present invention;

[0035] Figure 2 for Figure 1 A partial schematic diagram of

[0036] Figure 3 for Figure 1 Side view of

[0037] Figure 4 for Figure 1 Schematic diagram of the decomposition of

[0038] Figure 5 for Figure 4 A partial schematic diagram of

[0039] Figure 6 A three-dimensional schematic diagram of a temperature measurement system for a tower-type photothermal absorber without showing a protective plate;

[0040] Figure 7 for Figure 6 A partial schematic diagram of

[0041] Figure 8 for Figure 6 Schematic diagram of the main view (partial cross-section of the bracket);

[0042] Fig. 9 for Figure 8 A partial schematic diagram of

[0043] Fig.10 A top view of the wire passing through the gap between two first connecting members adjacent to the heat collecting block and then placed on a side of the plurality of first connecting members away from the heat absorbing tube during assembly;

[0044] Fig.11 This is a top view of the assembled temperature measurement system (partial cross-section of the bracket);

[0045] Fig.12 It is a front view when the electric wire is located in the gap between two adjacent second connecting members and the space between the second connecting member and the bracket during operation.

[0046] [Description of Reference Numerals]

[0047] 1: bracket; 11: first connecting hole; 12: second connecting hole; 13: vertical board; 14: horizontal board;

[0048] 2: first connecting member; 21: plate body; 22: sleeve; 221: third connecting hole;

[0049] 3: second connecting piece;

[0050] 4: thermocouple; 41: heat collecting block; 42: wire;

[0051] 51: protective plate; 52: insulation plate; 511: accommodation space;

[0052] 6: tube screen; 61: heat absorbing tube. DETAILED DESCRIPTION

[0053] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. Figure 3 The orientation is used as a reference.

[0054] See also Figure 1-12 The temperature measurement system of the tower photothermal absorber proposed in the embodiment of the present invention is used to monitor the temperature of the heat absorbing tube 61 of the tower photothermal absorber. Among them, a plurality of heat absorbing tubes 61 are arranged in parallel and assembled to form a tube panel 6. When the tube panel 6 is working, the heat absorbing elongation and heat releasing contraction in the axial direction will occur.

[0055] The temperature measurement system includes a bracket 1 , a plurality of first connecting members 2 , a plurality of second connecting members 3 and a thermocouple 4 .

[0056] The plurality of first connectors 2 can be fixed one-to-one on the first side of the plurality of heat absorbing tubes 61 arranged in parallel. The bracket 1 is located on the first side of the plurality of heat absorbing tubes 61. The plurality of second connectors 3 connect the plurality of first connectors 2 to the bracket 1 one-to-one. The heat collecting block 41 of the thermocouple 4 is fixed on the first side of a heat absorbing tube 61. The wire 42 of the thermocouple 4 is located in the gap between two adjacent second connectors 3 and in the space between the second connector 3 and the bracket 1. The first connector 2 and the thermocouple 4 can be synchronously raised and lowered relative to the bracket 1 with the plurality of heat absorbing tubes 61.

[0057] The temperature measurement system set up above has the following effects:

[0058] Easy to install: The thermocouple 4 as a whole does not need to pass through the interior of any structural member, which does not affect the protection plate 51 for protecting the heat absorption tube 61 from damage, the insulation plate 52 for preventing the heat absorption tube 61 from dissipating heat, and the support frame and other mechanisms set on the side of the bracket 1 away from the heat absorption tube 61.

[0059] High temperature measurement accuracy: the heat collecting block 41 of the thermocouple 4 is fixed on the heat absorbing tube 61 to directly monitor the temperature of the heat absorbing tube 61 , and the monitoring accuracy is high.

[0060] Avoid damage to the wire 42 of the thermocouple 4: When the heat absorption tube 61 absorbs heat and stretches axially and releases heat and contracts axially, the first connecting member 2 and the thermocouple 4 can be synchronously moved up and down relative to the bracket 1 with the multiple heat absorption tubes 61, and the gap between two adjacent second connecting members 3 and the space between the second connecting member 3 and the bracket 1 provide space for the wire 42 to move up and down, so as to avoid other structural members restricting the movement of the wire 42 when the wire 42 moves, and can also effectively avoid the wire 42 from contacting with other structural members and being damaged when it shifts.

[0061] It should be noted that the upper ends or lower ends of the multiple heat absorption tubes 61 are fixed on the header of the tower-type photothermal absorber, and the header is fixed on the support frame of the tower-type photothermal absorber to support the multiple heat absorption tubes 61 through the support frame. When the multiple heat absorption tubes 61 are working, the ends of the multiple heat absorption tubes 61 away from the header can undergo axial heat absorption and elongation and heat release and contraction relative to the support frame; or, the bracket 1 assembled to the peripheral wall of the multiple heat absorption tubes 61 is fixed on the support frame of the tower-type photothermal absorber to support the multiple heat absorption tubes 61 through the support frame. When the multiple heat absorption tubes 61 are working, the two ends of the multiple heat absorption tubes 61 can undergo axial heat absorption and elongation and heat release and contraction relative to the support frame.

[0062] Specifically, when the heat collecting block 41 is fixed to the first side of a heat absorbing tube 61, the wire 42 plugged into the heat collecting block 41 can pass through the gap between two adjacent first connecting members 2 and be placed on the side of the plurality of first connecting members 2 away from the heat absorbing tube 61;

[0063] When multiple second connecting members 3 connect multiple first connecting members 2 to the bracket 1 one by one, the wire 42 is located in the gap between two adjacent first connecting members 2 and the space between the first connecting member 2 and the bracket 1, and can move downward to the gap between two adjacent second connecting members 3 and the space between the second connecting member 3 and the bracket 1 under the action of its own weight.

[0064] Thus, it can be conveniently achieved that when the tower-type solar thermal absorber is working, the wire 42 is located in the gap between two adjacent second connecting members 3 and the space between the second connecting member 3 and the bracket 1 .

[0065] See also Figure 10-12 The assembly method of the temperature measurement system of the tower type photothermal absorber is as follows:

[0066] During assembly, multiple heat absorbing tubes 61 are placed parallel to the ground, multiple first connectors 2 are fixed one by one on the first side of multiple heat absorbing tubes 61 (i.e., the top of the heat absorbing tubes 61 placed parallel to the ground, and the side facing away from the sunlight when the multiple heat absorbing tubes 61 are working), and the heat collecting block 41 of the thermocouple 4 is fixed on the first side of a heat absorbing tube 61. Subsequently, the wire 42 is plugged into the heat collecting block 41, and the end of the wire 42 away from the heat collecting block 41 is passed through the gap between the two first connectors 2 adjacent to the heat collecting block 41 and placed on the side of the multiple first connectors 2 away from the heat absorbing tube. Subsequently, the multiple first connectors 2 are connected to the bracket 1 one by one through the multiple second connectors 3, so that the multiple heat absorbing tubes 61 are assembled into a tube panel 6, and the assembly of the multiple heat absorbing tubes 61, the bracket 1 and the thermocouple 4 is completed. At this time, the wire 42 is located in the gap between the two adjacent second connectors 3 and the space between the first connector 2 and the bracket 1. When the tower-type photothermal absorber is working, the multiple heat absorption tubes 61 and the temperature measurement system are all oriented vertically, and the wires 42 move downward under their own weight to the gap between two adjacent second connecting members 3 and the space between the second connecting member 3 and the bracket 1.

[0067] Thus, the assembly of a plurality of heat absorbing tubes 61 , the bracket 1 and the thermocouple 4 can be realized conveniently.

[0068] Furthermore, the temperature measurement system also includes a control system.

[0069] The end of the wire 42 of the thermocouple 4 away from the heat collecting block 41 is connected to the control system. The control system is used to receive the temperature of the heat absorbing tube 61 monitored by the thermocouple 4, so as to obtain the temperature data of the heat absorbing tube 61 in real time, and control the operation of the tower type photothermal absorber according to the temperature of the heat absorbing tube 61.

[0070] Preferably, one bracket 1 corresponds to a plurality of thermocouples 4, and the heat collecting blocks 41 of the plurality of thermocouples 4 are fixed one by one on a plurality of heat absorbing tubes 61, so as to monitor the temperature of different heat absorbing tubes 61, thereby further improving the detection accuracy.

[0071] Preferably, a plurality of brackets 1 are provided, and the plurality of brackets 1 can be arranged at intervals along the axial direction of the plurality of heat absorbing tubes 61. Each bracket 1 corresponds to at least one thermocouple 4, so that the main bodies of the plurality of thermocouples 4 are fixed at different heights of the plurality of heat absorbing tubes 61 and the temperatures at different heights of the plurality of heat absorbing tubes 61 are monitored, thereby further improving the monitoring accuracy.

[0072] Specifically, the main body of the thermocouple 4 is welded to the heat absorbing tube 61 for easy installation.

[0073] Furthermore, a plurality of parallel and spaced connection holes are provided on the bracket 1 , and a connection hole is provided on the first connection member 2 .

[0074] The second connecting member 3 is an insertion rod, and multiple second connecting members 3 can be inserted into the connecting holes on the multiple first connecting members 2 and the multiple connecting holes on the bracket 1 in a one-to-one correspondence, so as to connect the multiple first connecting members 2 to the bracket 1, and enable the multiple first connecting members 2 and the thermocouples 4 to be able to rise and fall synchronously relative to the bracket 1 with the multiple heat absorption tubes 61.

[0075] The above arrangement facilitates the loading and unloading of the plurality of heat absorbing tubes 61 and the bracket 1 .

[0076] Furthermore, the bracket 1 is a frame body with a C-shaped cross section, the open end of the bracket 1 can face the first side of the plurality of heat absorbing tubes 61, and the opposite ends of the bracket 1 respectively have a plurality of first connection holes 11 and a plurality of second connection holes 12 arranged in parallel and spaced apart, and the plurality of first connection holes 11 and the plurality of second connection holes 12 correspond to each other. The first connecting member 2 has a third connection hole 221. The second connecting member 3 is a latch, and both ends of the second connecting member 3 have sockets perpendicular to their own axis.

[0077] During assembly, the plurality of second connectors 3 are sequentially provided with a plurality of first connection holes 11, a plurality of third connection holes 221 on the first connectors 2, and a plurality of second connection holes 12 in correspondence with each other. The plug holes at both ends of each second connector 3 can extend out of the two ends of the bracket 1 and a plurality of limit members are inserted to limit the two ends of the second connector 3. In this way, the plurality of first connectors 2 can be connected to the bracket 1, and when the plurality of heat absorbing tubes 61 absorb heat and axially extend and release heat and axially contract, the plurality of first connectors 2 and the thermocouple 4 can be driven to rise and fall synchronously relative to the second connector 3, that is, relative to the bracket 1. At the same time, the gaps between the plurality of second connectors 3 and the space between the C-shaped bracket 1 and the plurality of second connectors 3 can form a space for the wires 42 of the thermocouple 4 to rise and fall.

[0078] Specifically, the limiting member is a pin.

[0079] Furthermore, the heat collecting block 41 of the thermocouple 4 corresponds to the open end of the bracket 1, so that the wires 42 of the thermocouple 4 are protected in the gap between the two adjacent second connecting parts 3 and the space between the second connecting parts 3 and the bracket 1, so as to avoid other structural parts restricting the movement of the wires 42 when the wires 42 move, and can also effectively avoid the wires 42 from contacting with other structural parts and being damaged when they shift.

[0080] Furthermore, the first connecting member 2 includes a connecting plate 21 and a sleeve 22 . One side of the connecting plate 21 is fixed to the heat absorbing tube 61 , and the other side is fixed to the sleeve 22 . The inner cavity of the sleeve 22 forms a third connecting hole 221 .

[0081] Optionally, one side of the connecting plate 21 is welded to the heat absorbing tube 61 , and the other side is welded to the sleeve 22 , so as to facilitate assembly.

[0082] Furthermore, the temperature measurement system also includes a protection plate 51 and a heat preservation plate 52 .

[0083] A through hole is provided on the protective plate 51, and the protective plate 51 is located on a first side of the plurality of heat absorbing tubes 61. The through hole on the protective plate 51 is used to pass the bracket 1. A heat preservation plate 52 is fixedly provided on a side of the protective plate 51 away from the plurality of heat absorbing tubes 61. A groove is provided on the heat preservation plate 52, and the groove is connected to the through hole to form an accommodation space 511 for accommodating the bracket 1.

[0084] When there are multiple brackets 1 , there are also multiple through holes and multiple grooves. The multiple through holes and the multiple grooves correspond to each other one by one and are connected to form a receiving space 511 for receiving the corresponding brackets 1 .

[0085] The protection plate 51 is used to protect the plurality of heat absorbing tubes 61 from damage and improve the aesthetics, and the heat preservation plate 52 is used to prevent the heat loss of the plurality of heat absorbing tubes 61 .

[0086] Specifically, the protective plate 51 and / or the insulation plate 52 are detachably fixed to the support frame of the tower-type solar thermal absorber by fasteners such as screws to support the protective plate 51 and the insulation plate 52 and facilitate loading and unloading and maintenance.

[0087] Specifically, the protection plate 51 includes a plurality of plate bodies that are spaced apart, and through holes are formed between adjacent plate bodies; or, the protection plate 51 includes a plurality of through holes that are spaced apart.

[0088] Specifically, the insulation board 52 is detachably fixed to the protective board 51 by fasteners such as screws; or, the insulation board 52 is bonded to the protective board 51. Preferably, the insulation board 52 is detachably fixed to the protective board 51 by fasteners such as screws, so as to facilitate loading and unloading and maintenance.

[0089] Preferably, the side of the insulation board 52 away from the protective board 51 is connected or bonded to another protective board by fasteners such as screws to protect the insulation board 52 from damage. Specifically, at least one of the protective board 51, the insulation board 52 and another protective board is fixed to the support frame of the tower-type solar thermal absorber. More preferably, both sides of the insulation board 52 are detachably connected to the protective board 51 and another protective board by screws to facilitate loading and unloading and maintenance.

[0090] Furthermore, the bracket 1 includes a vertical plate 13 and two horizontal plates 14. The two horizontal plates 14 are relatively arranged at the upper and lower ends of the vertical plate 13, and both horizontal plates 14 can be detachably connected to the vertical plate 13. The two horizontal plates 14 and the vertical plate 13 can be assembled into a frame with a C-shaped cross-section.

[0091] When the thermocouple 4 needs to be repaired, the insulation board 52, the protection board 51 and the vertical board 13 are disassembled, and then the second connecting member 3 shielding the thermocouple 4 is partially disassembled to expose the thermocouple 4 for easy repair of the thermocouple 4.

[0092] Specifically, the two horizontal plates 14 are detachably connected to the vertical plate 13 by screws.

[0093] The vertical plate 13 is a whole plate; or, the vertical plate 13 includes a plurality of sub-plates arranged in the horizontal direction.

[0094] Preferably, the vertical plate 13 includes a plurality of sub-plates arranged in the horizontal direction, and the two horizontal plates 14 are detachably connected to the upper and lower ends of the plurality of sub-plates, so that the plurality of sub-plates form the vertical plate 13 and are assembled into a frame body with a C-shaped cross section.

[0095] When the thermocouple 4 needs to be repaired, the insulation plate 52 and the protection plate 51 are first disassembled, and then the sub-plate and the second connecting member 3 shielding the thermocouple 4 are partially disassembled to expose the thermocouple 4, further facilitating the repair of the thermocouple 4.

[0096] Specifically, the two transverse plates 14 are detachably connected to the plurality of sub-plates by screws.

[0097] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0099] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0100] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A temperature measurement system for a tower-type photothermal absorber, characterized in that: It comprises a bracket (1), a plurality of first connecting members (2), a plurality of second connecting members (3) and a thermocouple (4); The plurality of first connecting members (2) can be fixed one by one on the first side of a plurality of heat absorbing tubes (61) arranged in parallel; the bracket (1) is located on the first side of the plurality of heat absorbing tubes (61); The plurality of second connecting members (3) connect the plurality of first connecting members (2) to the bracket (1) in a one-to-one correspondence; The heat collecting block (41) of the thermocouple (4) is fixed on a first side of a heat absorbing tube (61); the wire (42) of the thermocouple (4) is located in the gap between two adjacent second connecting members (3) and in the space between the second connecting member (3) and the bracket (1); The plurality of first connecting members (2) and the thermocouples (4) can be raised and lowered relative to the bracket (1) synchronously with the plurality of heat absorbing tubes (61).

2. The temperature measurement system of the tower photothermal absorber according to claim 1, characterized in that: The bracket (1) is provided with a plurality of connection holes which are arranged in parallel and at intervals, and the first connection member (2) is provided with a connection hole; The second connecting member (3) is an insertion rod, and a plurality of the second connecting members (3) can be inserted into the connection holes on the plurality of the first connecting members (2) and the plurality of the connection holes on the bracket (1) in a one-to-one correspondence, so as to connect the plurality of the first connecting members (2) to the bracket (1), and enable the plurality of the first connecting members (2) and the thermocouples (4) to be able to rise and fall synchronously with the plurality of the heat absorbing tubes (61) relative to the bracket (1).

3. The temperature measurement system of the tower photothermal absorber according to claim 2, characterized in that: The bracket (1) is a bracket body with a C-shaped cross section, the open end of the bracket (1) can face the first side of the plurality of heat absorbing tubes (61), and the opposite ends of the bracket (1) are respectively provided with a plurality of first connection holes (11) arranged in parallel and at intervals and a plurality of second connection holes (12) arranged in parallel and at intervals, and the plurality of first connection holes (11) and the plurality of second connection holes (12) correspond to each other one by one; A third connecting hole (221) is provided on the first connecting member (2); The second connecting member (3) is a plug pin, and both ends of the second connecting member (3) are provided with plug holes perpendicular to the axis thereof; A plurality of the second connecting members (3) can be provided with a plurality of the first connecting holes (11), a plurality of the third connecting holes (221) on the first connecting members (2), and a plurality of the second connecting holes (12) in a one-to-one correspondence, and the insertion holes at both ends of each of the second connecting members (3) can extend out of the two ends of the bracket (1) and can be provided with limit members, so as to connect the plurality of the first connecting members (2) to the bracket (1), and enable the plurality of the first connecting members (2) and the thermocouples (4) to be able to rise and fall synchronously with the plurality of the heat absorbing tubes (61) relative to the bracket (1).

4. The temperature measurement system of the tower photothermal absorber according to claim 3, characterized in that: The bracket (1) comprises a vertical plate (13) and two horizontal plates (14), wherein the two horizontal plates (14) are arranged at the upper and lower ends of the vertical plate (13) in a relative manner, and the two horizontal plates (14) can be detachably connected to the vertical plate (13); The vertical plate (13) is a whole plate; or, the vertical plate (13) includes a plurality of sub-plates arranged in a horizontal direction; When the vertical plate (13) includes a plurality of split plates arranged in a horizontal direction, the two horizontal plates (14) are detachably connected to the upper and lower ends of the plurality of split plates.

5. The temperature measurement system of the tower photothermal absorber according to claim 3, characterized in that: The first connecting member (2) comprises a connecting plate (21) and a sleeve (22); one side of the connecting plate (21) is fixed to the corresponding heat absorbing tube (61), and the other side is fixed to the sleeve (22); the inner cavity of the sleeve (22) forms the third connecting hole (221).

6. The temperature measurement system of the tower photothermal absorber according to claim 1, characterized in that: When the heat collecting block (41) is fixed to the first side of a heat absorbing tube (61), the electric wire (42) plugged into the heat collecting block (41) can pass through the gap between two adjacent first connecting members (2) and be placed on a side of the plurality of first connecting members (2) away from the heat absorbing tube (61); When a plurality of second connecting members (3) connect a plurality of first connecting members (2) to the bracket (1) in a one-to-one correspondence, the electric wire (42) is located in the gap between two adjacent first connecting members (2) and the space between the first connecting member (2) and the bracket (1), and can move downward under the action of its own weight to the gap between two adjacent second connecting members (3) and the space between the second connecting member (3) and the bracket (1).

7. The temperature measurement system of the tower photothermal absorber according to claim 1, characterized in that: The number of the brackets (1) is plural, and the brackets (1) can be arranged at intervals along the axial direction of the plurality of heat absorbing tubes (61), and each bracket (1) corresponds to at least one thermocouple (4), so that the main bodies of the plurality of thermocouples (4) are fixed at different heights of the plurality of heat absorbing tubes (61); One of the brackets (1) corresponds to a plurality of thermocouples (4), and the heat collecting blocks (41) of the plurality of thermocouples (4) are fixed on the plurality of heat absorbing tubes (61) in a one-to-one correspondence.

8. The temperature measurement system of the tower photothermal absorber according to claim 1, characterized in that: It also includes a protective plate (51) and a heat-insulating plate (52); The protective plate (51) is provided with a through hole, the protective plate (51) is located on a first side of the plurality of heat absorbing tubes (61), and the through hole on the protective plate (51) is used to pass the bracket (1); the insulation plate (52) is fixedly arranged on a side of the protective plate (51) away from the heat absorbing tubes (61); the insulation plate (52) is provided with a groove, the groove is connected to the through hole and forms an accommodation space (511) for accommodating the bracket (1).

9. The temperature measurement system of the tower photothermal absorber according to claim 1, characterized in that: Also includes control systems; One end of the electric wire (42) away from the heat collecting block (41) is connected to the control system; The control system is used to receive the temperature of the heat absorption tube (61) monitored by the thermocouple (4).

10. The temperature measurement system of the tower photothermal absorber according to claim 1, characterized in that: The first connecting member (2) and the heat collecting block (41) of the thermocouple (4) are both welded to the heat absorbing tube (61).

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