A coaxial tool for installing a thermoelectric power generation module

Abstract

The application relates to the technical field of thermoelectric power generation, and provides a coaxial tool for installing a thermoelectric power generation module, the thermoelectric power generation module comprising a heat collector and a cold-end heat collar, the cold-end heat collar being sleeved outside the heat collector, the coaxial tool comprising a chuck assembly and a variable-diameter piece. The chuck assembly has a bearing surface, and the chuck assembly can lock the cold-end heat collar to the bearing surface; the variable-diameter piece is arranged on the chuck assembly, the variable-diameter piece is coaxial with the chuck assembly, the heat collector is placed on the bearing surface and sleeved outside the variable-diameter piece, and the variable-diameter piece can be coaxially expanded outward in the radial direction to abut against the inner circumferential surface of the heat collector. The coaxial tool for installing the thermoelectric power generation module can ensure that the cold-end heat collar and the heat collector are coaxial.

Description

Technical Field

[0001] This application relates to the field of thermoelectric power generation technology, and in particular to a coaxial tooling for installing thermoelectric power generation modules. Background Technology

[0002] Thermoelectric power generation module is a coaxial structure consisting of a collector, thermoelectric devices, a cold-end heat spreader, and a cold-end pressurized heat transfer shaft. The thermoelectric devices are evenly distributed on the outer circumference of the collector, while the cold-end pressurized heat transfer shaft is distributed on the inner circumference of the cold-end heat spreader. A spring at the tail end of the cold-end pressurized heat transfer shaft presses the thermoelectric devices firmly against the outer circumference of the collector. To achieve uniform heat distribution across the collector's circumference, the force applied by the cold-end pressurized heat transfer shaft to the thermoelectric devices must be consistent, and the spring compression strokes must be equal. This requires coaxiality between the collector and the cold-end heat spreader. Summary of the Invention

[0003] In view of this, embodiments of this application aim to provide a coaxial fixture for installing a thermoelectric power generation module to ensure that the cold end heat exchanger and the collector are coaxial.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] This application discloses a coaxial fixture for installing a thermoelectric power generation module. The thermoelectric power generation module includes a collector and a cold-end heat exchanger, the cold-end heat exchanger being sleeved outside the collector. The coaxial fixture includes:

[0006] A chuck assembly having a bearing surface, the chuck assembly being able to lock the cold end heat exchanger to the bearing surface;

[0007] A reducing element is disposed on the chuck assembly. The reducing element is coaxial with the chuck assembly. The solar collector is placed on the bearing surface and sleeved outside the reducing element. The reducing element can expand coaxially outward in the radial direction to abut against the inner circumferential surface of the solar collector.

[0008] In one embodiment, the chuck assembly includes a chuck and a plurality of jaws, the reducing member is coaxial with the chuck, the plurality of jaws are arranged at intervals around the central axis of the chuck, the sides of the plurality of jaws away from the chuck together define the bearing surface, and each jaw can move radially along the chuck to lock or release the cold end heat exchanger.

[0009] In one embodiment, the jaws include a bearing portion, a locking portion, and a limiting portion. The bearing portion is slidably disposed on the axial side of the chuck. The bearing portions of multiple jaws, located away from the side of the chuck, collectively define the bearing surface. The bearing portion forms multiple axially penetrating locking holes, which are arranged radially at intervals. The limiting portion is disposed at the radial outer end of the bearing portion and extends in a direction away from the chuck. The cold end heat dissipation ring is located between the limiting portions of the multiple jaws. The locking portion passes through the locking holes to abut against or move away from the axial side of the chuck.

[0010] In one embodiment, one of the support portion and the chuck is formed with a groove, and the other of the support portion and the chuck is formed with a slide rail. Both the groove and the slide rail extend radially, and the groove slides in slidable engagement with the slide rail.

[0011] In one embodiment, the chuck assembly includes a base, the base having a positioning shaft, a positioning hole being formed in the central region of the chuck, and the positioning shaft being interference-fitted into the positioning hole.

[0012] In one embodiment, one end of the reducing member is formed with a stud with external threads, and a threaded hole is formed inside the positioning shaft, with the stud threadedly engaging with the threaded hole.

[0013] In one embodiment, the flatness of the bearing surface is less than 0.01 mm.

[0014] In one embodiment, the coaxiality between the reducing member and the chuck assembly is between 0 mm and 0.02 mm.

[0015] In one embodiment, the variable diameter component includes:

[0016] Tensioner shaft;

[0017] A variable diameter sleeve is formed with an axially through groove. The tensioning shaft is disposed in the through groove. The solar collector is sleeved outside the variable diameter sleeve. The variable diameter sleeve can expand radially outward along the tensioning shaft to abut against the inner circumferential surface of the solar collector.

[0018] In one embodiment, the variable diameter sleeve includes an elastic ring and a plurality of variable diameter blocks, the plurality of variable diameter blocks being arranged around the axis of the tensioning shaft to jointly define the through groove, and the elastic ring being sleeved on the outer periphery of the plurality of variable diameter blocks to tighten the variable diameter blocks.

[0019] In one embodiment, the variable diameter component includes an adjusting wheel, which is disposed on the tensioning shaft. Rotating the adjusting wheel adjusts the tensioning shaft to expand coaxially outward in a radial direction.

[0020] This application discloses a coaxial fixture for installing a thermoelectric power generation module. A chuck assembly is used to fix the cold-end heat exchanger, and a reducing component is used to fix the solar collector. When the chuck assembly and the reducing component are coaxial, the cold-end heat exchanger and the solar collector are also coaxial. This design is simple to operate, highly efficient in installation, and provides a good foundation for the subsequent installation of the cold-end pressurized heat transfer shaft and thermoelectric devices. The reducing component expands radially outwards coaxially, accommodating solar collectors of different diameters, offering high flexibility. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a thermoelectric power generation module;

[0022] Figure 2 An exploded view of a coaxial tooling for installing a thermoelectric power generation module, provided as an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the installation of a cold-end heat exchanger and a heat collector, provided for another embodiment of this application.

[0024] Explanation of reference numerals in the attached figures

[0025] Thermoelectric power generation module 1; collector 11; second mounting position 11a; thermoelectric device 12; cold end pressurized heat transfer shaft 13; cold end heat spreader 14; first mounting position 14a; spring 15; coaxial tooling 2; chuck assembly 21; bearing surface 21a; chuck 211; positioning hole 211a; slide rail 211b; disc body 211c; claw 212; bearing part 2121; locking hole 2121a; locking part 2122; limiting part 2123; base 213; positioning shaft 213a; variable diameter part 22; tensioning shaft 221; variable diameter sleeve 222; through groove 222a; elastic ring 2221; variable diameter block 2222; limiting groove 2222a; limiting sub-groove 2222a1; adjusting wheel 223. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. The terms "first," "second," etc., used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly including at least one feature. In the description of the embodiments of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] Please see Figure 1 The isotope thermoelectric power generation module 1 includes a collector 11, a thermoelectric device 12, a cold-end pressurized heat transfer shaft 13, and a cold-end heat spreader 14. The isotope radiation source is placed inside the collector 11, which collects the heat emitted by the source and evenly transfers it to its surface. The thermoelectric device 12 has two axial end faces, a cold end and a hot end. The hot end of the thermoelectric device 12 is connected to the outer circumference of the collector 11. One end of the cold-end pressurized heat transfer shaft 13 is connected to the cold end of the thermoelectric device 12. Applying pressure increases the hot surface area of ​​the hot end of the thermoelectric device 12, reducing thermal resistance and improving thermal efficiency. The other end of the cold-end pressurized heat transfer shaft 13 is connected to the cold-end heat spreader 14 via a spring 15. The cold-end heat spreader 14 contacts the outer casing, evenly transferring the heat from the hot end to the outer casing, thus reducing the cold end temperature of the thermoelectric device 12. In this way, the thermoelectric device 12 generates electricity based on the temperature difference between the cold and hot ends.

[0029] This application provides a coaxial fixture for installing a thermoelectric generator module. Please refer to [link / reference]. Figure 2 and Figure 3 The thermoelectric power generation module 1 includes a solar collector 11 and a cold-end heat spreader 14, which is fitted around the solar collector 11. The coaxial fixture 2 includes a chuck assembly 21 and a reducing member 22. The chuck assembly 21 has a bearing surface 21a, and the chuck assembly can lock the cold-end heat spreader 14 onto the bearing surface 21a. The reducing member 22 is mounted on the chuck assembly 21 and is coaxial with it. The solar collector 11 is placed on the bearing surface 21a and fitted around the reducing member 22. The reducing member 22 can expand radially outwards coaxially to abut against the inner circumferential surface of the solar collector 11.

[0030] In this embodiment, a chuck assembly 21 is used to fix the cold-end heat spreader 14, and a reducing member 22 is used to fix the collector 11. Thus, when the chuck assembly 21 and the reducing member 22 are coaxial, the cold-end heat spreader 14 and the collector 11 are also coaxial. This simplifies operation, increases installation efficiency, and provides a good installation foundation for the subsequent installation of the cold-end pressurized heat transfer shaft 13 and the thermoelectric device 12. The reducing member 22 expands radially outwards coaxially, accommodating collectors 11 of different diameters, offering high flexibility.

[0031] It should be noted that since the thermoelectric generator is composed of multiple thermoelectric power generation modules 1, the collector 11 and the cold end heat exchanger 14 of each two adjacent thermoelectric power generation modules 1 must also be coaxial.

[0032] As an example, in one embodiment, please refer to Figure 1 and Figure 3Multiple first mounting positions 14a are formed on the inner circumferential surface of the cold end heat exchanger 14, and multiple second mounting positions 11a are formed on the outer circumference of the collector 11. Each first mounting position 14a is aligned with a second mounting position 11a at intervals. The cold end pressurized heat transfer shaft 13 and the thermoelectric device 12 are perpendicularly abutted between the first mounting positions 14a and the second mounting positions 11a.

[0033] For example, in one embodiment, the coaxial tooling 2 includes an alignment block. After the cold end heat exchanger 14 and the collector 11 are placed on the bearing surface 21a, the alignment block can be first used to clamp the cold end heat exchanger 14 and the collector 11 to align their first mounting position 14a and second mounting position 11a. Then, the variable diameter component 22 and the chuck assembly 21 are adjusted to fix the collector 11 and the cold end heat exchanger 14 respectively. In this way, the axial and radial relative displacement of the subsequent installation of the cold end pressurized heat transfer shaft 13 and the thermoelectric device 12 can be maintained, ensuring the coaxiality requirement of the thermoelectric power generation module 1 and improving the working stability and efficiency.

[0034] In one embodiment, the flatness of the bearing surface 21a is less than 0.01 mm. For example, the flatness of the bearing surface 21a can be 0.001 mm, 0.004 mm, 0.006 mm, 0.008 mm, or 0.01 mm. This allows, on the one hand, by setting a suitable flatness, the cold-end heat spreader 14 and the collector 11 can be placed on the same plane during installation, thus improving their coaxiality; on the other hand, it facilitates the alignment of the first mounting position 14a and the second mounting position 11a.

[0035] It should be noted that the height of the cold end heat spreader 14 is the same as the height of the collector 11. Therefore, when one end face of the two is coplanar along the height direction, the other end face is also coplanar.

[0036] In one embodiment, the coaxiality between the reducing member 22 and the chuck assembly 21 is between 0 mm and 0.02 mm. For example, the coaxiality between the reducing member 22 and the chuck assembly 21 can be 0 mm, 0.005 mm, 0.01 mm, 0.015 mm, or 0.02 mm, etc. In this way, by setting an appropriate coaxiality, the coaxiality between the cold end heat spreader 14 and the collector 11 can be improved.

[0037] In one embodiment, please refer to Figure 2 and Figure 3The chuck assembly 21 includes a chuck 211 and multiple jaws 212. A reducing member 22 is coaxial with the chuck 211, and the multiple jaws 212 are arranged at intervals around the central axis of the chuck 211. For example, the number of jaws 212 is not limited; for instance, there can be four jaws 212 arranged at 90° intervals around the central axis of the chuck 211. The sides of the multiple jaws 212 away from the chuck 211 collectively define a bearing surface 21a. Each jaw 212 can move radially along the chuck 211 to lock or release the cold-end heat exchanger 14. This allows for the adaptation to cold-end heat exchangers 14 of different sizes, providing strong versatility. Furthermore, after installing the cold-end pressure heat transfer shaft 13 and the thermoelectric device 12, adjusting the jaws 212 to release the cold-end heat exchanger 14 facilitates disassembly and improves efficiency.

[0038] In one embodiment, please refer to Figure 2 The chuck 212 includes a support portion 2121, a locking portion 2122, and a limiting portion 2123. The support portion 2121 is slidably disposed on the circumferential side of the chuck 211. The sides of the support portions 2121 of multiple chucks 212 away from the chuck 211 together define a support surface 21a. For example, the sides of the support portions 2121 of four chucks 212 away from the chuck 211 together define the support surface 21a, providing a support plane for the installation and coaxiality adjustment of the cold end heat spreader 14 and the collector 11. The support portion 2121 has multiple axially penetrating locking holes 2121a, which are arranged radially spaced. For example, two locking holes 2121a are formed on the support portion 2121 along the axial direction of the chuck 211, and the two locking holes are arranged radially spaced. A limiting portion 2123 is disposed at the radial outer end of the bearing portion 2121, and the limiting portion 2123 extends in a direction away from the chuck 211. For example, the limiting portion 2123 may be disposed on the outer end of the bearing portion 2121 along the radial direction of the chuck 211, and the limiting portion 2123 and the bearing portion 2121 are approximately "L"-shaped. A cold end heat dissipation ring 14 is located between the limiting portions 2123 of the plurality of jaws 212, and a locking portion 2122 passes through a locking hole to abut against or move away from the axial side of the chuck 211. For example, each bearing surface 21a is moved in the radial direction of the chuck 211. After the multiple limiting parts 2123 are in contact with the cold end heat transfer ring 14, the locking part 2122 passes through the locking hole. In this way, the cold end heating ring can be pressed against the limiting part 2123. On the one hand, this can improve the coaxiality with the collector 11. On the other hand, it can prevent shaking when installing the cold end pressurized heat transfer shaft 13 and the thermoelectric device 12, thereby improving the installation accuracy.

[0039] In one embodiment, please refer to Figure 2One of the support portion 2121 and the chuck 211 has a groove, and the other of the support portion 2121 and the chuck 211 has a slide rail 211b. Both the groove and the slide rail 211b extend radially and are slidably engaged. For example, the slide rail 211b may be formed on the peripheral side of the chuck 211, and the groove may be formed on the side of the support portion 2121 near the chuck 211. Both the slide rail 211b and the groove extend radially along the chuck 211. This allows the limiting portion 2123 to be adapted to and pressed against the size of the cold end heat spreader 14 by pushing the support portion 2121. In some embodiments, the groove is formed on the side of the chuck 211 near the support portion 2121, and the slide rail 211b is formed on the side of the support portion 2121 near the chuck 211, with the groove and the slide rail 211b slidably engaged.

[0040] For example, in one embodiment, the limiting part 2123 is made of aluminum alloy. This prevents damage to the cold end heat exchanger 14 when it is pressed against it.

[0041] For example, in one embodiment, the limiting portion 2123 has an elastic pad formed on one side near the cold end heat spreader 14 to reduce damage to the cold end heat spreader 14.

[0042] In one embodiment, please refer to Figure 2 The chuck assembly 21 includes a base 213, on which a positioning shaft 213a is formed. A positioning hole 211a is formed in the central region of the chuck 211, and the positioning shaft 213a is interference-fitted into the positioning hole 211a. Thus, by interference-fitting the central region of the chuck 211 onto the positioning shaft 213a of the base 213, the working stability of the tooling can be improved, and the coaxiality of the chuck 211 and the reducing component 22 can be guaranteed.

[0043] It is understandable that the central area of ​​chuck 211 is the area centered on the axis of chuck 211, with a radius equal to a preset distance from the axis of chuck 211. The specific value of the preset distance can be set according to requirements.

[0044] As an example, in one embodiment, please refer to Figure 2 The chuck 211 includes a cylindrical disc body 211c and a slide rail 211b. A positioning hole 211a is formed in the central area of ​​the disc body 211c. The slide rail 211b can be disposed on the side of the cylindrical disc body 211c that is close to the bearing part 2121 along the axial direction.

[0045] The base 213 includes a positioning shaft 213a and a disc-shaped seat, with the positioning shaft 213a located in the central area of ​​the seat. The disc-shaped seat makes it easy to place on a work surface, such as a table or the ground.

[0046] It is understandable that the central area of ​​the seat is the region centered on the axis of the disc-shaped seat, with a radius equal to a set distance from the axis. The specific value of the set distance can be set according to requirements.

[0047] In one embodiment, please refer to Figure 2 One end of the reducing component 22 has a stud with external threads, and a threaded hole is formed in the positioning shaft 213a, with the stud and the threaded hole being threadedly engaged. This ensures the coaxiality requirement between the reducing component 22 and the chuck 211, providing good coaxiality between the subsequent cold end heat exchanger 14 and the collector 11.

[0048] In one embodiment, please refer to Figure 2 and Figure 3 The reducing component 22 includes a tensioning shaft 221 and a reducing sleeve 222. The reducing sleeve 222 has an axially through groove 222a. The tensioning shaft 221 is disposed within the through groove 222a. The solar collector 11 is sleeved on the outside of the reducing sleeve 222. The reducing sleeve 222 can expand radially outward and coaxially with the tensioning shaft 221 to abut against the inner circumferential surface of the solar collector 11. In this way, by fitting the reducing sleeve 222 onto the tensioning shaft 221, which can expand outward and coaxially, stepless adjustment of the outer diameter of the reducing component 22 can be achieved, allowing for more flexible adaptation to solar collectors 11 of different diameters, thus providing strong versatility.

[0049] It should be noted that the tensioning shaft 221 has specifications, or rather, the adjusted diameter has a fixed range. For example, taking 1-inch and 2-inch pneumatic tensioning shafts 221 as examples, before inflation, the diameter of the 1-inch shaft is 24mm and the diameter of the 2-inch shaft is 49mm. After inflation, the diameter of the 1-inch shaft is between 28mm and 32mm, and the diameter of the 2-inch shaft is between 52mm and 54mm. If the inner diameter of the collector 11 is between 32mm and 49mm at this time, then there will be no corresponding tensioning shaft 221 available.

[0050] In one embodiment, please refer to Figure 2 The reducing sleeve 222 includes an elastic ring 2221 and a plurality of reducing blocks 2222. The plurality of reducing blocks 2222 are arranged around the axis of the tensioning shaft 221 to jointly define a through groove 222a. Exemplarily, the number of reducing blocks 2222 is not limited; for example, there are four reducing blocks 2222, each extending axially. The four reducing blocks 2222 are arranged around the axis of the tensioning shaft 221 at one end near the tensioning shaft 221 to form the through groove 222a. The elastic ring 2221 is fitted onto the outer periphery of the plurality of reducing blocks 2222 to clamp the reducing blocks 2222.

[0051] The multiple variable diameter blocks 2222 can be a separate structure. That is, each variable diameter block 2222 can be separated and operated independently. When the tensioning shaft 221 expands radially, it compresses the variable diameter blocks 2222 and the elastic ring 2221, increasing the distance between the variable diameter blocks 2222 and causing the elastic ring 2221 to expand and undergo elastic deformation. When the tensioning shaft 221 contracts radially, the elastic ring 2221 contracts and recovers its elastic deformation, decreasing the distance between the variable diameter blocks 2222.

[0052] For example, the reducing sleeve 222 can be generally annular in structure. The reducing block 2222 can be generally fan-shaped in structure, and multiple reducing blocks 2222 can be enclosed to form an annular reducing sleeve 222.

[0053] As an example, in one embodiment, please refer to Figure 2 Each variable diameter block 2222 has a limiting sub-groove 2222a1 formed on its outer peripheral surface. After multiple variable diameter blocks 2222 are arranged, multiple limiting sub-grooves 2222a1 form a limiting groove 2222a. An elastic ring 2221 is set in the limiting groove 2222a to prevent the elastic ring 2221 from detaching from the variable diameter block 2222 and improve its working stability.

[0054] In one embodiment, please refer to Figure 2 and Figure 3 The reducing component 22 includes an adjusting wheel 223, which is mounted on the tensioning shaft 221. For example, the adjusting wheel 223 can be positioned at the end of the tensioning shaft 221 furthest from the chuck 211. Rotating the adjusting wheel 223 causes the tensioning shaft 221 to expand radially outward and coaxially. Thus, when adjusting the tensioning shaft 221, the outer diameter of the tensioning shaft 221 can be changed by manually rotating the adjusting wheel 223. When a noticeable lag occurs during rotation, it indicates that the shaft is firmly against the outer circumference of the solar collector 11. Adjustment is convenient, easily perceptible, and provides a good user experience.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. All modifications, equivalent substitutions, improvements, etc., within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A coaxial fixture for installing a thermoelectric power generation module, the thermoelectric power generation module comprising a collector and a cold-end heat exchanger, the cold-end heat exchanger being sleeved outside the collector, characterized in that, The coaxial tooling includes: A chuck assembly includes a chuck and multiple jaws, the multiple jaws being spaced apart around the central axis of the chuck, each jaw being movable radially along the chuck to lock or release the cold end heat exchanger. Each jaw includes a bearing portion, a locking portion, and a limiting portion. The bearing portion is slidably disposed on the axial side of the chuck. The bearing portions of the multiple jaws, away from the side of the chuck, collectively define a bearing surface. The bearing portion forms multiple axially penetrating locking holes, the multiple locking holes being arranged radially spaced apart. The limiting portion is disposed at the radially outer end of the bearing portion and extends in a direction away from the chuck. The cold end heat exchanger is located between the limiting portions of the multiple jaws. The locking portion passes through the locking holes to abut against or move away from the axial side of the chuck. A reducing element is disposed on the chuck assembly. The reducing element is coaxial with the chuck. The solar collector is placed on the bearing surface and sleeved outside the reducing element. The reducing element can expand coaxially outward in the radial direction to abut against the inner circumferential surface of the solar collector.

2. The coaxial tooling according to claim 1, characterized in that, One of the bearing portion and the chuck has a groove, and the other of the bearing portion and the chuck has a rail. Both the groove and the rail extend radially, and the groove slides in conjunction with the rail.

3. The coaxial tooling according to claim 1, characterized in that, The chuck assembly includes a base, the base having a positioning shaft, and a positioning hole being formed in the central region of the chuck, with the positioning shaft being interference-fitted into the positioning hole.

4. The coaxial tooling according to claim 3, characterized in that, One end of the reducing component is formed with a stud with external threads, and a threaded hole is formed inside the positioning shaft. The stud is threadedly engaged with the threaded hole.

5. The coaxial tooling according to claim 1, characterized in that, The flatness of the bearing surface is less than 0.01 mm.

6. The coaxial tooling according to claim 1, characterized in that, The coaxiality between the reducing component and the chuck assembly is between 0 mm and 0.02 mm.

7. The coaxial tooling according to claim 1, characterized in that, The variable diameter component includes: Tensioner shaft; A variable diameter sleeve is formed with an axially through groove. The tensioning shaft is disposed in the through groove. The solar collector is sleeved outside the variable diameter sleeve. The variable diameter sleeve can expand radially outward along the tensioning shaft to abut against the inner circumferential surface of the solar collector.

8. The coaxial tooling according to claim 7, characterized in that, The variable diameter sleeve includes an elastic ring and multiple variable diameter blocks. The multiple variable diameter blocks are arranged around the axis of the tensioning shaft to jointly define the through groove. The elastic ring is sleeved on the outer periphery of the multiple variable diameter blocks to tighten the variable diameter blocks.

9. The coaxial tooling according to claim 7, characterized in that, The variable diameter component includes an adjusting wheel, which is disposed on the tensioning shaft. Rotating the adjusting wheel adjusts the tensioning shaft to expand coaxially outward in a radial direction.

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