Phase change thermal control assembly thermal conductivity test module
By setting four-wire platinum resistance thermometers on both the hot and cold sides of the phase change thermal control component and combining simulation fitting, and designing copper cold source plate and heat source plate of appropriate thickness, the accuracy problem of thermal conductivity testing of non-uniform structure thermal control component was solved, and accurate thermal conductivity measurement was achieved.
Patent Information
- Application Number
- CN202520235500.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Existing technologies are insufficient for accurately measuring the thermal conductivity of phase change thermal control components with non-uniform structures. Traditional transient methods yield low-precision test results, which cannot meet the requirements of satellite thermal control systems.
Temperature measurements were taken on both the hot and cold sides of the phase change thermal control component using a four-wire platinum resistance thermometer. Based on simulation fitting, uniform cold and hot source plates were designed, and observation windows and guide grooves were opened on the plates to avoid contact between the measurement points. Copper material was used to facilitate temperature transfer and fixation.
It enables precise temperature measurement at different locations on the surface of the phase change thermal control component, obtains the equivalent thermal conductivity of the product, and improves the accuracy and reliability of the test.
Smart Images
Figure CN223742370U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to spacecraft thermal control technique technical field, concretely is a kind of phase change thermal control assembly thermal conductivity test module. BACKGROUND
[0002] With the development of science and technology, the function of satellite has become more and more powerful, and the power consumption of satellite is also more and more large. If the temperature of electronic components in satellite is too high, the operation efficiency will be affected, the reliability will be reduced, and the service life of satellite will be reduced. Therefore, the thermal control system of satellite is one of the most important subsystems, and the main task is to control the temperature of equipment and structure in satellite within the required range. Especially for the satellite with high life requirement, the thermal control system is particularly important.
[0003] Because the space is a vacuum environment, the heat transfer path is limited, and the main heat transfer path is heat conduction and heat radiation. With the increasing heat consumption of electronic components and the increasing complexity of the structure in satellite, the traditional heat conduction and heat radiation cannot meet the requirements of satellite thermal control system.
[0004] Antenna is a common load of satellite, which is widely used in remote sensing and communication fields. The antenna has the working characteristic of short-time high power, and its heat often cannot be dissipated through conventional heat dissipation means. Phase change heat storage is a common means of antenna thermal control.
[0005] Paraffin wax is a common material for phase change heat storage, which has the characteristics of low density, high latent heat and stable chemical properties, and is an ideal choice for aerospace heat storage material. However, its low thermal conductivity will affect the heat storage effect of phase change thermal control assembly, and is also not conducive to the control of antenna array temperature uniformity. Therefore, the thermal conductivity design of paraffin phase change thermal control assembly is particularly important. However, after the product design is completed, it is difficult to test its thermal conductivity. The test result of transient method thermal conductivity test is low in accuracy for non-uniform structure product, and a test method suitable for non-uniform structure phase change assembly is needed.
[0006] Therefore, it is necessary to provide a phase change thermal control assembly thermal conductivity test module, which can accurately measure the temperature of different points on the surface of phase change assembly by four-wire platinum resistance, and can accurately obtain the equivalent thermal conductivity of product by simulation fitting, so as to effectively solve the test problem of non-uniform structure phase change assembly. UTILITY MODEL CONTENTS
[0007] The utility model aims at the deficiencies of prior art, and provides a phase change thermal control assembly thermal conductivity test module.
[0008] A phase change thermal control assembly thermal conductivity test module, comprising a phase change thermal control assembly, a cold source plate, a heat source plate and a plurality of measuring points, the cold source plate and the heat source plate are installed on the two side walls of the phase change thermal control assembly respectively, and the measuring points are composed of first measuring points and second measuring points arranged on the cold and hot sides of the phase change thermal control assembly respectively.
[0009] The cold source plate is provided with a plurality of first observation windows, each of which is provided with a first guide slot on one side of the cold source plate, and each of the first guide slots extends to a side wall of the cold source plate, each of the first guide slots is in communication with the corresponding first observation window, the first measuring point is located inside the first observation window, the first measuring point is connected with a first measuring point lead wire, and the first measuring point lead wire extends outward along the first guide slot.
[0010] The heat source plate is provided with a plurality of second observation windows, each of which is provided with a second guide slot on one side of the heat source plate, and each of the first guide slots extends to a side wall of the heat source plate, each of the second guide slots is in communication with the corresponding second observation window, the second measuring point is located inside the second observation window, the second measuring point is connected with a second measuring point lead wire, and the second measuring point lead wire extends outward along the second guide slot.
[0011] Further, a plurality of the first guide slots are arranged in parallel, and a plurality of the second guide slots are arranged in parallel.
[0012] Further, the first measuring point is pasted at a position inside the first observation window of the cold source plate, and the first measuring point does not contact the side wall of the first observation window.
[0013] The second measuring point is pasted at a position inside the second observation window of the heat source plate, and the second measuring point does not contact the side wall of the second observation window.
[0014] Further, the first measuring point and the second measuring point are both four-wire platinum resistance.
[0015] Further, the heat source plate and the cold source plate are both members made of red copper.
[0016] Further, the first observation window and the second observation window are both circular, the diameter of the first observation window is 5-10mm, and the diameter of the second observation window is 5-10mm.
[0017] Further, a fixing assembly is further fixed, the fixing assembly comprises a screw rod, threaded holes are provided at four corner positions of the cold source plate, fixing holes are provided at positions corresponding to the threaded holes of the corners of the heat source plate, and the screw rod passes through the threaded holes in sequence and then enters the fixing holes to fix the cold source plate and compress the phase change thermal control assembly.
[0018] Further, the heat source plate is pasted with a heating device on the side wall surface away from the cold source plate, and the heating devices are uniformly distributed.
[0019] Further, the cold source plate is arranged on the surface of the cold plate.
[0020] Further, it further comprises a heat preservation layer, which wraps the whole composed of the heat source plate, the cold source plate and the phase change thermal control assembly in between.
[0021] The utility model has the advantages compared with prior art:
[0022] 1. The cold source plate and the heat source plate of the utility model adopt uniform temperature, provide uniform boundary condition for products, set measuring points at multiple positions on the product surface, accurately measure the temperature of different positions on the surface of the phase change thermal control assembly by using measuring units, and can accurately obtain the equivalent thermal conductivity of the product by combining simulation fitting.
[0023] 2. The cold source plate and the heat source plate of the utility model are designed by using red copper with appropriate thickness, and observation windows are opened at equal intervals in the center of the cold source plate and the heat source plate. The observation windows are as small as possible on the premise of not touching the measuring points, which facilitates the measuring points and avoids the influence of the cold source plate and the heat source plate on the measuring points. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a structure schematic view under the first visual angle of the utility model;
[0025] Figure 2 It is a structure schematic view under the second visual angle of the utility model;
[0026] Figure 3 It is a structure schematic view under the front visual angle when the cold plate is arranged below the phase change thermal control assembly thermal conductivity test module proposed by the utility model;
[0027] Figure 4 It is a structure schematic view of the cold source plate and the heat source plate proposed by the utility model;
[0028] Figure 5 It is a structure schematic view under the explosion visual angle of the utility model;
[0029] Figure 6 It is a structure schematic view of the cold source plate proposed by the utility model;
[0030] Figure 7 It is a structure schematic view of the heat source plate proposed by the utility model.
[0031] Mark: 1, phase change thermal control assembly; 2, cold source plate; 3, heat source plate; 4, measuring point; 5, fixing assembly; 6, heating device; 7, cold plate;
[0032] 21, first observation window; 22, first guide groove;
[0033] 31, second observation window; 32, second guide groove;
[0034] 41, first measuring point; 42, second measuring point; 43, first measuring point lead; 44, second measuring point lead;
[0035] 51, screw; 52, threaded hole; 53, fixing hole. DETAILED DESCRIPTION
[0036] The embodiment provides a thermal conductivity test module of a phase change thermal control assembly, as shown in the accompanying drawings. Figures 1-7 As shown, the thermal conductivity test module comprises a phase change thermal control assembly 1, a cold source plate 2, a heat source plate 3 and a plurality of test points 4. The cold source plate 2 and the heat source plate 3 are respectively arranged on two side walls of the phase change thermal control assembly 1. The cold source plate 2 and the heat source plate 3 are both made of red copper, so that temperature can be conveniently transferred. The heat source plate 3 is arranged above the phase change thermal control assembly 1, so that the phase change thermal control assembly 1 can be conveniently heated. The cold source plate 2 is arranged below the phase change thermal control assembly 1 and is arranged on a cold plate 7 / heat sink, so that the temperature is kept low. The whole assembly composed of the heat source plate 3, the cold source plate 2 and the phase change thermal control assembly 1 in the middle is wrapped with a heat preservation material outside, so that the temperature of the whole assembly is prevented from escaping, and the accuracy of the test is ensured.
[0037] The test points 4 are composed of first test points 41 and second test points 42 arranged on the cold side and the hot side of the phase change thermal control assembly 1 respectively. The cold end of the phase change thermal control assembly 1 is pasted with a plurality of first test points 41 made of four-wire platinum resistance material and arranged at equal intervals. The hot end of the phase change thermal control assembly 1 is pasted with a plurality of second test points 42 made of four-wire platinum resistance material and arranged at equal intervals. The test points 4 are pasted on the surface of the phase change thermal control assembly 1, so that the influence of contact thermal resistance can be avoided to the greatest extent. The temperature of different points on the surface of the phase change assembly is accurately measured through the test points 4. In combination with simulation fitting, the equivalent thermal conductivity of the product can be accurately obtained.
[0038] Please refer to the accompanying drawings Figures 4-6 The structure on the cold source plate 2 in the embodiment is specifically described as follows: The cold source plate 2 is designed by using red copper with a proper thickness. A plurality of first observation windows 21 are arranged at equal intervals on the cold source plate 2, so that the first test points 41 can be conveniently positioned. The first observation windows 21 are as small as possible and are prevented from touching the first test points 41, so that the cold source plate 2 is prevented from interfering with the measurement results of the points. A first guide groove 22 is arranged on one side of the cold source plate 2 corresponding to each first observation window 21. The plurality of first guide grooves 22 all extend to one side wall of the cold source plate 2. Each first guide groove 22 is in communication with the corresponding first observation window 21. The first test points 41 are located inside the first observation windows 21. The first test points 41 are connected with first test point wires 43. The first test point wires 43 extend outward along the first guide grooves 22. The first guide grooves 22 facilitate the first test point wires 43 to be led out.
[0039] Please refer to the accompanying drawings Figures 4-5 and Figure 7The structure on the heat source plate 3 in the embodiment is specifically described as follows: the heat source plate 3 is designed with a proper thickness of red copper, the heating device 6 is pasted on the side wall surface of the heat source plate 3 away from the cold source plate 2 to meet the heat source requirement of the test, the heating device 6 is uniformly distributed to facilitate uniform heating of the heat source plate 3, a plurality of second observation windows 31 are equidistantly arranged on the heat source plate 3, the second observation windows 31 are as small as possible and ensure not to touch the second measuring point 42 to prevent the heat source plate 3 from interfering with the measuring result of the point, a second guide groove 32 is arranged on one side of each second observation window 31 relative to the heat source plate 3, the plurality of first guide grooves 22 extend to one side wall of the heat source plate 3, each second guide groove 32 is in communication with the corresponding second observation window 31, the second measuring point 42 is located inside the second observation window 31, the second measuring point 42 is connected with the second measuring point lead wire 44, the second measuring point lead wire 44 extends outward along the second guide groove 32, and the second guide groove 32 facilitates the second measuring point lead wire 44 to be drawn out.
[0040] In addition, the plurality of first guide grooves 22 are arranged in parallel, and the plurality of second guide grooves 32 are arranged in parallel, so that each measuring point 4 lead wire is straightly drawn out without interfering with each other, thereby facilitating the measurement of thermal conductivity.
[0041] Please refer to the accompanying drawings of the specification Figures 6-7 The structure of the first observation window 21 and the second observation window 31 in the embodiment is specifically described as follows: the first observation window 21 and the second observation window 31 are both circular, the diameter of the first observation window 21 is 5-10 mm, and the diameter of the second observation window 31 is 5-10 mm, too small may cause the first measuring point 41 to contact the cold source plate 2 and the second measuring point 42 to contact the heat source plate 3, and too large may cause the contact area of the cold source plate 2 and the heat source plate 3 with the phase change thermal control assembly 1 to be small, thereby affecting the measurement result, therefore, the size specification is set in this way, which can check whether the measuring point 4 at the measuring point position is normally running through the observation window, control the normal progress of the measurement process, at the same time, the first measuring point 41 and the cold source plate 2 are prevented from contacting, and the second measuring point 42 and the heat source plate 3 are prevented from contacting, so that the first measuring point 41 and the second measuring point 42 only measure the temperature at the cold and hot ends of the phase change thermal control assembly 1 without being interfered by the cold source plate 2 and the heat source plate 3.
[0042] Please refer to the accompanying drawings of the specification Figure 5 The assembly process of the overall structure is specifically described as follows: on the basis of the above structure, the overall structure further has a fixing assembly 5, the fixing assembly 5 includes a screw rod 51, threaded holes 52 are arranged at four corner positions of the cold source plate 2, fixing holes 53 are arranged at positions corresponding to the threaded holes 52 at the corners of the heat source plate 3, and the screw rod 51 passes through the threaded holes 52 in sequence and then enters the fixing holes 53 to fix the cold source plate 2 and compress the phase change thermal control assembly 1.
[0043] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0044] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0045] In the description of the utility model, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" 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 utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0046] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A phase change thermal control assembly thermal conductivity test module, characterized by: Including phase change thermal control assembly (1), cold source plate (2), heat source plate (3) and several measuring points (4), the cold source plate (2) and the heat source plate (3) are installed on the two sides of the phase change thermal control assembly (1) respectively, the measuring point (4) is by first measuring point (41) and second measuring point (42) respectively arranged on the cold and hot sides of phase change thermal control assembly (1); The cold source plate (2) is equidistantly provided with a plurality of first observation windows (21), each first observation window (21) is provided with a first guide groove (22) on one side of the cold source plate (2), a plurality of first guide grooves (22) extend to one side wall of the cold source plate (2), each first guide groove (22) is communicated with the corresponding first observation window (21), the first measuring point (41) is located in the first observation window (21), the first measuring point (41) is connected with the first measuring point lead (43), and the first measuring point lead (43) extends outward along the first guide groove (22); The heat source plate (3) is equidistantly provided with a plurality of second observation windows (31), each second observation window (31) is provided with a second guide groove (32) on one side of the heat source plate (3), a plurality of first guide grooves (22) extend to one side wall of the heat source plate (3), each second guide groove (32) is communicated with the corresponding second observation window (31), the second measuring point (42) is located in the second observation window (31), the second measuring point (42) is connected with the second measuring point lead (44), and the second measuring point lead (44) extends outward along the second guide groove (32).
2. The thermal conductivity test module for phase change thermal control assemblies of claim 1, wherein: A plurality of first guide grooves (22) are arranged in parallel, and a plurality of second guide grooves (32) are arranged in parallel.
3. The thermal conductivity test module for phase change thermal control assemblies of any of claims 1-2, wherein: The first measuring point (41) is pasted at the position of the cold source plate (2) inside the first observation window (21), and the first measuring point (41) is not in contact with the side wall of the first observation window (21); The second measuring point (42) is pasted at the position of the heat source plate (3) inside the second observation window (31), and the second measuring point (42) is not in contact with the side wall of the second observation window (31).
4. The thermal conductivity test module for phase change thermal control assemblies of claim 3, wherein: The first measuring point (41) and the second measuring point (42) are all four-wire platinum resistance.
5. The thermal conductivity test module for phase change thermal control assemblies of claim 1, wherein: The heat source plate (3) and the cold source plate (2) are both components made of red copper material.
6. The thermal conductivity test module for phase change thermal control assemblies of claim 1, wherein: The first observation window (21) and the second observation window (31) are both circular, the diameter of the first observation window (21) is 5-10mm, and the diameter of the second observation window (31) is 5-10mm.
7. The thermal conductivity test module for phase change thermal control assemblies of claim 1, wherein: A fixing assembly (5) is also fixed, the fixing assembly (5) comprises a screw rod (51), threaded holes (52) are formed at four corner positions of the cold source plate (2), fixing holes (53) are formed at positions corresponding to the threaded holes (52) of the corners of the heat source plate (3), the screw rod (51) passes through the threaded holes (52) in sequence and then enters the fixing holes (53), so as to fix the cold source plate (2) and compress the phase change thermal control assembly (1).
8. The thermal conductivity test module for phase change thermal control assemblies of claim 1, wherein: The heat source plate (3) is pasted with heating devices (6) on the side wall surface away from the cold source plate (2), and the heating devices (6) are uniformly distributed.
9. The thermal conductivity test module for phase change thermal control assemblies of claim 8, wherein: The cold source plate (2) is arranged on the surface of a cold plate (7).
10. The thermal conductivity test module for phase change thermal control assemblies of claim 9, wherein: Further comprising a heat preservation layer, which wraps the whole of the heat source plate (3), the cold source plate (2) and the intermediate phase change thermal control assembly (1).