Measuring device

Abstract

The present invention relates to: a body (2); a vacuum chamber (3) located on the body (2) in which contact thermal resistance measurement is performed; a first sample (4) and a second sample (5) placed in the chamber (3) and in contact with each other to allow heat transfer to occur; a piston (6) that ensures continuous contact between the first sample (4) and the second sample (5) during measurement; a cooler (7) located below the first sample (4) and the second sample (5); at least one damper (8) attached to the chamber (3) located below the cooler (7) and capable of reducing the force applied by the piston (6) to provide continuous contact between the first sample (4) and the second sample (5); and a heat insulation body (9) disposed between the cooler (7) and the damper (8) to provide insulation for heat transfer by the cooler (7).

Description

[0001] This invention relates to a measuring device capable of measuring contact thermal resistance.

[0002] Honeycomb sandwich panels with carbon fiber reinforced surfaces are widely used, especially in spacecraft and aircraft. Various devices and components in spacecraft can be directly fixed to these panels, a process facilitated by supports. The devices, components, and / or supports fixed to these panels can be made of metallic materials. Therefore, accurately determining the contact thermal resistance formed by fixing devices, components, and / or supports to the panels is crucial in the thermal control design of spacecraft. When measuring contact thermal resistance, at least two samples are allowed to be in contact with each other. Heat exchange occurs between the two samples. Simultaneously, the contact thermal resistance is measured. This test is conducted in an atmosphere free from air contact. Continuous contact between the two samples is achieved through compressive force. The continuous compressive force is provided by a high-powered piston. To balance this compressive force, a damper must be present in the measuring device. This will adversely affect the measurement accuracy because heat exchange may occur between the damper and the hot surface. Therefore, Teflon (a thermal insulation material) needs to be placed between the damper and the hot surface. However, under the influence of piston force, the damper or hot surface can cause the insulation material to deform, leading to measurement errors and adversely affecting the lifespan of the device.

[0003] Chinese patent application CN105548249 describes a measurement method having a device for providing a point distribution of load.

[0004] The measuring device developed by this invention improves the measurement of contact thermal resistance, which is crucial for spacecraft and aircraft.

[0005] Another objective of this invention is to ensure that the developed measuring device is practical, effective, efficient and reliable, and to extend the service life of the measuring device.

[0006] A measuring device implemented to achieve the object of the present invention, as defined in the first claim and claims reliance thereof, comprises: a body; a chamber for removing air to perform contact thermal resistance measurement in the body; a first sample and a second sample, kept in contact to perform contact thermal resistance measurement in the chamber; a piston for facilitating contact between the first sample and the second sample; a cooler disposed in the chamber; at least one damper located below the cooler, thereby serving as a damper to reduce the force applied by the piston; and a heat insulation body disposed between the cooler and the damper to prevent heat loss.

[0007] The measuring device according to the invention includes: a plate positioned between a damper and a heat insulation body, thereby enabling uniform force distribution to prevent the damper from deforming the heat insulation body under the action of piston force.

[0008] In an embodiment of the invention, the measuring device includes a gap, which is opened in the insulation material during or after the gap production, and a plate is placed in the gap to reduce the negative impact of piston force on the insulation.

[0009] In an embodiment of the invention, the measuring device includes: more than one damper with equal distances between them to reduce the negative impact of piston force on the heat insulation body; more than one plate with equal distances between them; and more than one gap with equal distances between them.

[0010] In an embodiment of the invention, the measuring device includes more than one damper, the distance between which is non-uniform; more than one plate, the distance between which is non-uniform; and more than one gap, the distance between which is non-uniform.

[0011] In an embodiment of the present invention, the measuring device includes a sheet disposed between the heat insulation body and the cooler, thereby preventing the cooler from applying a force to the heat insulation body under the influence of the piston force, which would deteriorate the integrity of the heat insulation body.

[0012] In an embodiment of the present invention, the measuring device includes a sheet disposed in the gap to reduce the negative impact of the piston force passing through the cooler on the heat insulation body.

[0013] In an embodiment of the present invention, the measuring device includes a heat insulation body formed using Teflon material.

[0014] In an embodiment of the present invention, the measuring device includes a plate formed using stainless steel.

[0015] In an embodiment of the present invention, the measuring device includes a sheet formed using stainless steel.

[0016] The measuring device implemented to achieve the purpose of the present invention is shown in the accompanying drawings;

[0017] Figure 1 - This is a three-dimensional diagram of the measuring device.

[0018] Figure 2 - This is a three-dimensional diagram of a board, sheet, or insulation material.

[0019] The parts in the diagram are individually numbered, and their equivalents are shown below.

[0020] 1-Measuring device

[0021] 2-Ontology

[0022] 3-chamber

[0023] 4-First Sample

[0024] 5-Second Sample

[0025] 6-piston

[0026] 7-Cooler

[0027] 8-Damper

[0028] 9-Insulation

[0029] 10-board

[0030] 11-Gap

[0031] 12-Sheet

[0032] The measuring device (1) includes: a body (2); a vacuum chamber (3) located on the body (2), in which the contact thermal resistance measurement is performed; a first sample (4) and a second sample (5) placed in the chamber (3) and in contact with each other to allow heat transfer to occur; a piston (6) ensuring continuous contact between the first sample (4) and the second sample (5) during measurement; a cooler (7) located below the first sample (4) and the second sample (5); at least one damper (8) attached to the chamber (3) and located below the cooler (7), and the at least one damper is capable of absorbing the force applied by the piston (6) to provide continuous contact between the first sample (4) and the second sample (5); and a heat insulation element (9) disposed between the cooler (7) and the damper (8) to provide insulation for heat transfer by the cooler (7). Figure 1 )

[0033] The measuring device (1) according to the invention comprises: at least one plate (10) between a damper (8) and a heat insulation body (9), thereby preventing deformation of the heat insulation body (9) by uniformly distributing the force applied by the damper (8) onto the heat insulation body (9). Figure 2 )

[0034] Due to the vacuum chamber (3), a test apparatus independent of outdoor conditions is created. When measuring the contact thermal resistance of the first sample (4) and the second sample (5), a force is applied to the first sample (4) and the second sample (5) by the piston (6) to maintain contact between them. Heat flow is generated through the cooler (7) when measuring the contact thermal resistance of the first sample (4) and the second sample (5). The force applied by the piston (6) is reduced by the damper (8) to keep the measuring device (1) balanced. A heat shield (9) is placed between the cooler (7) and the damper (8) to prevent heat loss from the damper (8). Thus, the contact thermal resistance measurement of the first sample (4) and the second sample (5) to be used in the production of spacecraft and aircraft parts is performed in a manner that reduces the error rate.

[0035] On the heat insulation body (9), a plate (10) is disposed between the heat insulation body (9) and the damper (8) to prevent any deformation of the damper (8) due to the force applied by the piston (6). Thus, the force applied by the piston (6) is evenly distributed to prevent deformation of the heat insulation body (9). Therefore, a safe and easy-to-use measurement is achieved, while improving the accuracy of contact thermal resistance measurements of the first sample (4) and the second sample (5) to be used in the production of spacecraft and aircraft parts.

[0036] In an embodiment of the invention, the measuring device (1) includes at least one gap (11) disposed on the heat insulation body (9), the position of which is determined by the user, and a plate (10) disposed in the gap (11) to uniformly distribute the force applied by the damper (8) on the heat insulation body (9). The plate (10) is placed in the gap (11) disposed in the heat insulation body. Thus, the force applied by the piston (6) is uniformly distributed, and deformation of the heat insulation body (9) is reduced, thereby improving safety. Figure 2 )

[0037] In an embodiment of the invention, the measuring device (1) includes more than one damper (8), more than one plate (10), and more than one gap (11) arranged at equal distances from each other, so as to uniformly distribute the force applied by the damper (8) on the heat insulation body (9) when the force applied by the piston (6) decreases. Thus, the force applied by the piston (6) is uniformly distributed to prevent deformation of the heat insulation body (9). Figure 2 )

[0038] In an embodiment of the invention, the measuring device (1) includes more than one damper (8), more than one plate (10), and more than one gap (11) arranged at different distances from each other. Thus, the damper (8), plate (10), and gap (11) are positioned such that the force applied by the piston (6) is evenly distributed.

[0039] In an embodiment of the invention, the measuring device (1) includes at least one plate (12) located between the cooler (7) and the heat insulation body (9) to prevent deformation of the heat insulation body (9) when the force applied by the piston (6) is reduced. This prevents the cooler (7) from deforming the heat insulation body (9) under the force applied by the piston (6). Therefore, a safe and easy-to-use measurement is achieved, while improving the accuracy of contact thermal resistance measurements for first samples (4) and second samples (5) used in the production of spacecraft and aircraft components. Figure 2 )

[0040] In an embodiment of the invention, the measuring device (1) includes a sheet (12) disposed in a user-specified gap (11) on the insulation (9) to prevent deformation by uniformly distributing the force applied by the cooler (7) on the insulation (9).

[0041] Therefore, it prevents any deformation of the insulation (9) caused by the force applied by the piston (6).

[0042] In an embodiment of the invention, the measuring device (1) includes a heat insulation element (9) made of Teflon. Teflon is the most suitable material for this process in terms of heat insulation and durability. Therefore, the risk of deformation of the heat insulation element (9) is reduced.

[0043] In an embodiment of the invention, the measuring device (1) includes a plate (10) made of stainless steel. The plate (10), positioned between the insulation (9) and the damper (8), is intended to provide durability and uniform load distribution. Stainless steel is used for this purpose. Therefore, the risk of deformation of the insulation (9) is reduced.

[0044] In an embodiment of the invention, the measuring device (1) comprises a sheet (12) made of stainless steel. A plate (10) placed between the insulation (9) and the damper (8) is intended to provide durability and uniform load distribution. Stainless steel is used for this purpose. Therefore, the risk of deformation of the insulation (9) is reduced.

[0045] The measuring device (1) developed by the present invention provides a measuring device (1) that performs contact thermal resistance measurements that are critical to spacecraft and aircraft in a practical, effective, efficient and reliable manner by preventing expected deformation on the heat insulation body (9).

Claims

1. A measuring device (1), comprising: Body (2); vacuum chamber (3), located in the body (2), in which the contact thermal resistance measurement is performed; first sample (4) and second sample (5), the first sample and the second sample are placed in the chamber (3) and in contact with each other to allow heat transfer to occur; piston (6), the piston ensuring continuous contact between the first sample (4) and the second sample (5) during the measurement; A cooler (7) located below the first sample (4) and the second sample (5); at least one damper (8) attached to the chamber (3) located below the cooler (7) and capable of reducing the force applied by the piston (6) to provide continuous contact between the first sample (4) and the second sample (5); a heat insulation body (9) disposed between the cooler (7) and the damper (8) for use by the cooler (7) The heat transfer provides insulation, characterized in that: at least one plate (10) is disposed between the damper (8) and the insulation body (9) to prevent deformation of the insulation body (9) by uniformly distributing the force applied by the damper (8) on the insulation body (9), the insulation body (9) having at least one gap (11) and the position of the at least one gap being determined by the user, the plate (10) being disposed in the gap (11) to uniformly distribute the force applied by the damper (8) on the insulation body (9).

2. The measuring device (1) according to claim 1, characterized in that, More than one damper (8), more than one plate (10) and more than one gap (11) are arranged at equal distances from each other so that the force applied by the damper (8) is evenly distributed to the heat insulation (9) when the force applied by the piston (6) is reduced.

3. The measuring device (1) according to claim 1, characterized in that, More than one damper (8), more than one plate (10) and more than one gap (11) are set at different distances from each other.

4. The measuring device (1) according to any one of claims 1 to 3, characterized in that, At least one sheet (12) is disposed between the cooler (7) and the heat insulation (9) so that any deformation of the heat insulation (9) can be prevented when the force applied by the piston (6) is reduced.

5. The measuring device (1) according to claim 4, characterized in that, The sheet (12) is disposed in a user-specified gap (11) on the insulation (9) to prevent deformation by distributing the force applied by the cooler (7) evenly on the insulation (9).

6. The measuring device (1) according to any one of claims 1 to 3, characterized in that, The insulation (9) is made of Teflon.

7. The measuring device (1) according to any one of claims 1 to 3, characterized in that, The plate (10) is made of stainless steel.

8. The measuring device (1) according to claim 4, characterized in that, The sheet (12) is made of stainless steel.

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