Wide-temperature-zone limit heat flow black nickel coating type infrared simulation device

Abstract

The invention provides a wide-temperature-zone limit heat flow black nickel coating type infrared simulation device, which is characterized in that a nickel-chromium alloy heating tape for generating a black nickel coating based on a composite electroplating technology is arranged on the infrared simulation device, and the infrared simulation device is also provided with a lap joint sheet, a spring, an insulating spacer, a fixing screw, a wiring terminal, a power supply wire and a frame. The requirement for wide-temperature-zone limit heat flow infrared simulation for a spacecraft vacuum thermal test in the deep space exploration field is met, and the ground environment test heat flow simulation capacity is improved; the heating tape of the black nickel coating is generated based on the composite electroplating technology, and the problems that an organic black paint coating of a conventional heating tape is insufficient in temperature resistance and overtemperature volatilization pollution is caused are solved.

Description

Technical Field

[0001] The invention relates to the technical field of spacecraft space environment simulation, and in particular to a wide temperature range extreme heat flux black nickel plating type infrared simulation device. Background Art

[0002] The infrared simulation device is a non-contact electric heater made of a metal heating belt with high resistivity and small resistance temperature coefficient and an insulating support frame. It is a heat flow simulation process equipment designed according to the external configuration of the satellite. Because its radiation energy is mainly concentrated in the infrared spectrum, it has higher adaptability to satellite surface coatings with strong spectral selectivity. It is a heat flow simulation method commonly used in domestic spacecraft vacuum thermal tests.

[0003] However, the current infrared simulation device is limited by the problem of insufficient temperature resistance of black paint at -130℃ and over-temperature pollution at 200℃. The heat flow simulation capacity is generally 30~1200W / m 2 , which can only meet the needs of heat flow simulation in Earth orbit, but cannot meet the needs of extreme heat flow simulation in wide temperature ranges in deep space orbits such as the moon.

[0004] Therefore, with the continuous establishment of projects in the field of deep space exploration (such as the lunar exploration project), vacuum thermal tests have put forward higher requirements on infrared simulation capabilities. It is urgent to improve the extreme heat flow simulation capabilities of infrared simulation devices in a wide temperature range to meet the needs of model tests. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a wide temperature range extreme heat flux black nickel coating type infrared simulation device.

[0006] According to the present invention, a wide temperature range extreme heat flow black nickel plating type infrared simulation device comprises: a heating belt 1, a lap joint 2, a spring 3, an insulating gasket 4, a fixing screw 5, a wiring terminal 6, a power supply wire 7, and a frame 8;

[0007] The heating belt 1 is connected to the insulating gasket 4 through the spring 3 and the fixing screw 5; the insulating gasket 4 is installed on the frame 8 through the fixing screw 5; the heating belt 1 forms a heating circuit through the jumper 2; the power supply wire 7 is installed at both ends of the heating circuit through the terminal 6.

[0008] Preferably, the heating belt 1 is a nickel-chromium alloy with a black nickel coating generated based on a composite electroplating technology.

[0009] Preferably, the overlapping piece 2 and the heating belt 1 are made of the same material.

[0010] Preferably, the overlapping piece 2 is fixed to the surface of the heating belt 1 by multi-point welding.

[0011] Preferably, the power supply conductor 7 is a two-wire system.

[0012] Preferably, the frame 8 is a polygonal frame formed by welding angle steel and hollow circular tube.

[0013] Preferably, the spring 3 is a semicircular hook-ring type cylindrical helical tension spring.

[0014] Preferably, the heating belt 1 has the same coverage factor in the same partition and a flush surface.

[0015] Preferably, the optimal resistance range of the heating belt 1 circuit is within 30 ohms.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention solves the problem of the extreme heat flux (15W / m 2 ~2000W / m 2 ) Infrared simulation requirements, improving the thermal flow simulation capabilities of ground environment tests;

[0018] 2. The heating belt with black nickel coating generated based on composite electroplating technology solves the problem of insufficient temperature resistance of -130℃ of organic black paint coating on commonly used heating belts and volatilization pollution at over-temperature of 200℃. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 It is a schematic diagram of the wide temperature range extreme heat flux black nickel plating type infrared simulation device of the present invention. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0022] Example 1

[0023] Aiming at the insufficiency of the heat flow simulation capability of the infrared simulation device, the present invention provides a wide temperature range extreme heat flow black nickel plating type infrared simulation device, such as Figure 1As shown, it includes: a heating belt 1, a lap plate 2, a spring 3, an insulating gasket 4, a fixing screw 5, a terminal 6, a power supply wire 7, and a frame 8; the infrared simulation device is provided with a nickel-chromium alloy heating belt with a black nickel coating generated based on a composite electroplating technology, the heating belt 1 is connected to the insulating gasket 4 through the spring 3 and the fixing screw 5, the insulating gasket 4 is installed on the frame 8 through the fixing screw 5, the heating belt 1 forms a heating circuit through the lap plate 2, and the power supply wire 7 is crimped through the terminal 6 and then installed at both ends of the heating circuit with fixing screws.

[0024] Specifically, the surface of the heating belt is completely covered with a black nickel coating generated based on a composite electroplating technology.

[0025] Specifically, the overlap sheet and the heating belt are made of the same material and are fixed to the surface of the heating belt by multi-point welding.

[0026] Specifically, the heating belts have the same coverage factor in the same partition and have flush surfaces.

[0027] Spring 3 is a semicircular hook-ring type cylindrical helical tension spring.

[0028] Specifically, the power supply conductor 7 is a two-wire system.

[0029] Specifically, the frame 8 is a polygonal frame formed by welding angle steel and hollow circular tube.

[0030] Specifically, the optimal resistance range of the heating belt 1 circuit is within 30 ohms, and combined with the conventional programmable DC power supply specifications (150V / 5A), the maximum power output can be achieved.

[0031] In this embodiment, the infrared simulation device is consistent with the device to be tested, and the angle steel and the hollow circular tube are welded into a frame 8, and the number of the angle steel and the hollow circular tube is not less than 2. Then, the fixing screws 5 are installed in alignment with the holes on the insulating gasket 4 and the surface of the angle steel. The nickel-chromium alloy heating belt 1 with a black nickel coating generated based on the composite electroplating technology and the opening on the insulating gasket 4 are connected by hooks at both ends of the spring 3. The other end of the heating belt 1 is installed with the corresponding opening of the insulating gasket 4 to fix the screws 5. The spring 3 needs to be tightened to keep the heating belt 1 straight. The overlap sheet 2 is welded between the heating belts 1 at no less than 6 points to form a heating circuit. The two-wire power supply conductor 7 is crimped through the terminal 6 and then fastened to the two ends of the heating circuit by the fixing screws 5.

[0032] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A wide temperature range extreme heat flux black nickel plating type infrared simulation device, characterized in that: include: Heating belt (1), overlapping piece (2), spring (3), insulating gasket (4), fixing screw (5), wiring terminal (6), power supply wire (7), frame (8); The heating belt (1) is connected to the insulating gasket (4) via the spring (3) and the fixing screw (5); the insulating gasket (4) is mounted on the frame (8) via the fixing screw (5); the heating belt (1) forms a heating circuit via the overlapping piece (2); and the power supply wire (7) is mounted at both ends of the heating circuit via the connecting terminal (6).

2. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 1, characterized in that: The heating belt (1) is a nickel-chromium alloy with a black nickel coating generated based on a composite electroplating technology.

3. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 2, characterized in that: The overlapping piece (2) and the heating belt (1) are made of the same material.

4. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 1, characterized in that: The overlapping piece (2) is fixed on the surface of the heating belt (1) by multi-point welding.

5. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 1, characterized in that: The power supply conductor (7) is a double-wire system.

6. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 1, characterized in that: The frame (8) is a polygonal frame formed by welding angle steel and hollow circular tubes.

7. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 1, characterized in that: The spring (3) is a semicircular hook-ring type cylindrical helical tension spring.

8. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 1, characterized in that: The heating belt (1) has the same coverage factor in the same partition and a flush surface.

9. The wide temperature range extreme heat flux black nickel plating type infrared simulation device according to claim 1, characterized in that: The optimal resistance range of the heating belt (1) circuit is within 30 ohms.

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