Space environment simulation apparatus with active heat sink

Abstract

The application discloses a space environment simulation device with a movable heat sink, which comprises a horizontal two-end opening cylindrical vacuum chamber and a door, the cylindrical vacuum chamber is internally provided with a cylindrical heat sink, and the cylindrical heat sink is internally provided with a movable heat sink. The cylindrical vacuum chamber is provided with first and second interface assemblies, and the movable heat sink is provided with a third interface assembly. The first interface assembly comprises a refrigeration bellows, one end of the refrigeration bellows is connected with a first cylinder body interface flange through a bellows interface flange, and the other end of the refrigeration bellows is inserted into the vacuum chamber and is connected with a refrigeration pipe inner flange of a refrigeration pipe end of the cylindrical heat sink through a refrigeration pipe outer flange. The second interface assembly comprises a second cylinder body interface flange and an external interface flange, and the external interface flange is provided with a fixed heater wire penetrating pipe. The third interface assembly comprises a sealed shell, and is provided with a heater joint and a heating bellows joint which are fixedly connected with a cold end of an armored heater of the movable heat sink, and the third interface assembly is connected with the heater wire penetrating pipe. The application can solve the problems of interface damage caused by thermal expansion and contraction of the heat sink and installation of the movable part of the heat sink.

Description

TECHNICAL FIELD

[0001] The present application relates to a space environment simulation device, and belongs to the technical field of physical experiment equipment. BACKGROUND

[0002] A fixed heat sink is generally arranged in the space environment simulation device, and the fixed heat sink forms a test space with a fixed size. In a large space environment simulation device, the fixed test space is not conducive to the joint test of multiple devices, and therefore an active heat sink is considered to be used to construct a test space with variable space size. The test space with variable space size needs to be formed by arranging two openable and closable parts on the heat sink. According to the structure of the heat sink in the prior art, the openable and closable parts are arranged on the door of the vacuum chamber. However, the refrigerant pipe and the connection of the heating assembly of the middle part of the heat sink need to pass through the wall of the vacuum chamber, and the main thermal expansion and contraction deformation direction of the heat sink is along the axial direction of the vacuum chamber. The conventional through-cabin structure will cause the deformation of the interface position when the heat sink deforms, and the vacuum is damaged. In addition, the heat sink component used to change the size of the test space is a movable part, and there is a low pressure state in the heat sink. The armored heater needs to be used for the heating assembly, but the cold end of the armored heater is not resistant to vacuum. Therefore, how to set the mounting structure of the heater of the active heat sink is also a problem to be solved. SUMMARY

[0003] In view of the defects of the prior art, the present application provides a space environment simulation device with an active heat sink, which solves the problems of interface damage caused by thermal expansion and contraction of the heat sink and the mounting and connection of the heater of the active part of the heat sink.

[0004] The technical scheme of the present application is as follows: a space environment simulation device with a movable heat sink, comprising a cylindrical vacuum chamber with open ends and a vacuum chamber door, the cylindrical vacuum chamber is horizontally placed, the vacuum chamber door is located at both ends of the cylindrical vacuum chamber, a cylindrical heat sink is arranged in the cylindrical vacuum chamber, the vacuum chamber door is provided with a door plate heat sink, a movable heat sink is arranged in the cylindrical heat sink, a first interface assembly and a second interface assembly are arranged on the side wall of the cylindrical vacuum chamber, and the movable heat sink is provided with a third interface assembly; the first interface assembly comprises a first cylinder body interface flange and a refrigeration bellows, a bellows interface flange is arranged at the first end of the refrigeration bellows, a refrigeration pipe outer flange is arranged at the second end of the refrigeration bellows, a refrigeration pipe inner flange is connected to the refrigeration pipe end of the cylindrical heat sink, the second end of the refrigeration bellows extends into the cylindrical vacuum chamber from the first cylinder body interface flange, the refrigeration pipe outer flange is in sealed butt joint with the refrigeration pipe inner flange, and the bellows interface flange is in sealed butt joint with the first cylinder body interface flange; the second interface assembly comprises a second cylinder body interface flange and an external flange, the external flange is in sealed butt joint with the second cylinder body interface flange, and a heater wire penetrating pipe is fixedly arranged on the external flange; the third interface assembly comprises a sealed shell, a heater joint for sealing and fixedly connecting the cold end of the armored heater of the movable heat sink and a heating bellows joint are arranged on the sealed shell, the heating bellows joint is in butt joint with the heating wire penetrating pipe through a heating bellows with the heating wire penetrating pipe, and the wire of the armored heater is led out from the heater wire penetrating pipe through the sealed shell and the heating bellows.

[0005] Further, the movable heat sink comprises a heat sink bottom plate, rollers are arranged at the bottom of the heat sink bottom plate, guide rails are arranged in the cylindrical heat sink, and the rollers cooperate with the guide rails to enable the movable heat sink to move along the guide rails.

[0006] Further, the guide rails are two, one of which is a triangular guide rail, and the rollers cooperating with the triangular guide rail are groove wheels. Through the cooperation of the groove wheels and the triangular guide rail, the left and right deviation of the heat sink is limited.

[0007] Further, the guide rails are parallel to the axial direction of the cylindrical heat sink.

[0008] Further, support frames are fixedly connected to the heat sink bottom plate, and the rollers are mounted at the bottom of the support frames. The strength of the heat sink bottom plate is improved through the support frames.

[0009] Further, the heater joint comprises a fixed section and a loose section sleeved on the fixed section, the cold end of the armored heater is provided with a connecting part, the connecting part is in threaded connection with the loose section, and the end face of the connecting part is in sealed butt joint with the end face of the fixed section.

[0010] Further, the refrigeration bellows is internally provided with a refrigeration transition pipe, one end of the refrigeration transition pipe is in butt joint with the refrigeration pipe end of the cylindrical heat sink, and the other end of the refrigeration transition pipe extends out of the bellows interface flange.

[0011] Compared with the prior art, the technical scheme provided by the application has the advantages that:

[0012] The first interface assembly is used to realize the connection of the refrigeration pipe of the heat sink in the manner that the refrigeration bellows is embedded in the bellows interface flange, the activity freedom of the refrigeration pipe relative to the wall surface of the vacuum chamber is provided, the vacuum damage of the interface position caused by the thermal expansion and contraction of the heat sink is avoided, the distance of the refrigeration pipe of the heat sink in the radial direction of the cylindrical vacuum chamber is reduced, and the installation of the cylindrical heat sink is facilitated.The second interface assembly and the third interface assembly are matched, a sealed space without vacuum requirement is formed in the cylindrical vacuum chamber, the cold end of the armored heater is installed, the movement of the movable heat sink is not affected, the cold end of the armored heater is not damaged, the connection and installation of multiple armored heaters are facilitated through the switching of the closed shell, and the number of connection pipelines is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the space environment simulation device with the movable heat sink.

[0014] Figure 2 It is a structural schematic view of the first interface assembly.

[0015] Figure 3 It is a structural schematic view of the movable heat sink and the connection thereof.

[0016] Figure 4 It is a structural schematic view of the roller and the guide rail cooperation structure of the movable heat sink (A). Figure 3

[0017] Figure 5 It is a structural schematic view of the second interface assembly.

[0018] Figure 6 It is a structural schematic view of the third interface assembly. DETAILED DESCRIPTION

[0019] The application will be further described below in conjunction with the embodiments, and it should be understood that the embodiments are only used for illustrating the application and are not used for limiting the scope of the application, and after reading the description, the modification of various equivalent forms of the description by the person skilled in the art falls within the range defined by the claims attached to the application.

[0020] Please combine Figures 1 to 6As shown, the space environment simulation device with movable heat sink of the embodiment comprises a vacuum chamber body and corresponding vacuumizing system, cooling supply system, etc., wherein the vacuumizing system and cooling supply system are conventional settings of the prior art, and thus will not be described herein.

[0021] The vacuum chamber body comprises a cylindrical vacuum chamber 1 with both ends open, and vacuum chamber doors 2 at both ends of the cylindrical vacuum chamber 1. The vacuum chamber body with movable heat sink needs to be set to change the test space, and has a large volume. In order to facilitate operation, the vacuum chamber body is placed horizontally. That is, the cylindrical vacuum chamber 1 is installed on the ground in a horizontal state along the axis of the cylindrical vacuum chamber 1 through a plurality of supporting feet 3, and the vacuum chamber doors 2 are generally opened and closed through a hinge. The vacuum chamber doors 2 are arranged at both ends of the cylindrical vacuum chamber 1, so that the operator can operate from both ends of the cylindrical vacuum chamber 1.

[0022] Inside the vacuum chamber, the heat sink provides high and low temperature environment for the test equipment. In the embodiment, the heat sink mainly comprises three parts, i.e. a cylindrical heat sink 4, a door plate heat sink 5 and a movable heat sink 6.

[0023] The door plate heat sink 5 has the same structure as the heat sink installed on the vacuum chamber door 2 in the prior art. The cylindrical heat sink 4 is installed in the cylindrical vacuum chamber 1, and is similar to the cylindrical vacuum chamber 1, i.e. a cylindrical shape with both ends open, and is also placed horizontally. The refrigeration pipe of the cylindrical heat sink 4 is connected with the refrigeration source outside the vacuum chamber through a first interface assembly 7.

[0024] The first interface assembly 7 comprises a first cylinder interface flange 701 and a refrigeration bellows 702. The first end of the refrigeration bellows 702 is fixedly connected with a bellows interface flange 703, and the second end of the refrigeration bellows 702 is fixedly connected with a refrigeration pipe outer flange 704. The refrigeration pipe end 401 of the cylindrical heat sink 4 is fixedly connected with a refrigeration pipe inner flange 705. The connection between the refrigeration bellows 702 and the bellows interface flange 703 and the refrigeration pipe outer flange 704 is sealed. The connection between the refrigeration pipe end 101 and the refrigeration pipe inner flange 705 is also sealed. A refrigeration transition pipe 706 is arranged in the refrigeration bellows 702. In the specific installation and connection, the second end of the refrigeration bellows 702 extends into the cylindrical vacuum chamber 1 from the first cylinder interface flange 701. The refrigeration pipe outer flange 704 is fixedly connected with the refrigeration pipe inner flange 705 through bolts, and the connection between the refrigeration pipe outer flange 704 and the refrigeration pipe inner flange 705 is sealed by a metal gasket. The connection point between the refrigeration pipe outer flange 704 and the refrigeration pipe inner flange 705 is located in the refrigeration bellows 702. One end of the refrigeration transition pipe 706 is sealed and connected with the refrigeration pipe end 401 of the cylindrical heat sink 4 at the position of the refrigeration pipe inner flange 705, and the other end extends out of the bellows interface flange 703. The bellows interface flange 703 is connected with the first cylinder interface flange 701 through bolts, and the connection between the bellows interface flange 703 and the first cylinder interface flange 701 is sealed by a metal gasket. In this way, the refrigeration bellows 702 extends from the first cylinder interface flange 701 into the vacuum chamber, and the deformation of the refrigeration bellows 702 can meet the deformation requirement of the cylindrical heat sink 4 during high and low temperature experiments, so as to ensure that the vacuum is not failed at the interface position, and at the same time, the length of the refrigeration pipe end 401 of the cylindrical heat sink 4 in the radial direction is shortened. During installation, the movement distance of the cylindrical heat sink 4 in the radial direction is short, which fully meets the space limitation requirement and is convenient for installation.

[0025] The cylindrical heat sink 4 is provided with a movable heat sink 6 which can move along the axial direction of the cylindrical heat sink 4, and two guide rails 8 which extend along the axial direction of the cylindrical heat sink 4 are arranged in the cylindrical heat sink 4. One of the guide rails 8 is a straight rail, and the other guide rail 8 is a triangular guide rail. The movable heat sink 6 comprises a heat sink bottom plate 601, a support frame 602, an armored heater 603 and a movable heat sink refrigeration pipe 604. The heat sink bottom plate 601 is approximately circular and is adapted to the cross section of the cylindrical heat sink 4. The support frame 602 is fixedly connected to the back side of the heat sink bottom plate 601 and is used for structurally reinforcing the heat sink bottom plate 601 and facilitating the installation of rollers 605. The rollers 605 are installed at the bottom of the support frame 602 and run on the aforementioned guide rails 8. Correspondingly, the rollers 605 comprise two groups. One group of the rollers 605 are V-shaped groove wheels which cooperate with the triangular guide rail 8. The V-shaped groove wheels cooperate with the triangular guide rail 8 to limit the moving direction of the movable heat sink 6 left and right, so as to ensure the stability of the movement.

[0026] The wiring installation of the armored heater 603 on the mobile heat sink 6 is carried out through the second interface assembly 9 and the third interface assembly 10, and the connection installation of the mobile heat sink refrigeration pipe 604 is carried out through the second interface assembly 9. Specifically, please refer to the drawings shown in Figure 5 and Figure 6 The second interface assembly 9 includes a second cylinder interface flange 901 and an external flange 902, the external flange 902 is in sealing abutment with the second cylinder interface flange 901, and the external flange 902 is provided with a fixedly arranged heater wiring pipe 903 and a refrigeration pipe 904, wherein one end of the refrigeration pipe 904 located in the cylindrical vacuum chamber 1 is in sealing abutment with the mobile heat sink refrigeration pipe 604 through the corrugated pipe 11. The third interface assembly 10 includes a sealed shell 1001, the sealed shell 1001 is provided with a heater joint for sealing and fixedly connecting with the cold end of the armored heater 603 of the mobile heat sink 6 and a heating corrugated pipe joint 1002. The number of the heater joint is generally two, which is used to connect the two poles of the armored heater 603. The heater joint includes a fixed segment 1003 and a loose joint segment 1004 sleeved on the fixed segment 1003, the cold end of the armored heater 603 is provided with a connecting part 1005, and the connecting part 1005 and the cold end of the armored heater 603 are sealed. The connecting part 1005 is threadedly connected with the loose joint segment 1004, and the end surface of the connecting part 1005 is in sealing abutment with the end surface of the fixed segment 1003. The heating corrugated pipe joint 1002 is generally provided as one, which is a fixed structure with external threads, and the heating corrugated pipe 12 is provided with loose joints at both ends, which are in sealing abutment with the heating corrugated pipe joint 1002 and the heater wiring pipe 903 of the external flange 902 respectively. During installation, the wiring 603a of the armored heater 603 passes through the sealed shell 1001 and passes out from the heater wiring pipe 903 through the heating corrugated pipe 1002. Through the third interface assembly 10, the heating corrugated pipe 12 and the heater wiring pipe 903 described above, an atmospheric environment that can move with the mobile heat sink 6 is introduced into the vacuum chamber for connecting the cold end of the armored heater 603, which ensures the normal work of the armored heater 603 and will not be damaged due to the vacuum environment in the vacuum chamber.

[0027] Through the structure of the embodiment, the space of the cylindrical heat sink 4 is divided into left and right parts by the mobile heat sink 6, and the two vacuum chamber doors 2 are used as the opening and closing ends of the two parts of space, so that the related operations can be carried out on the two test devices at the same time. In addition, by moving the mobile heat sink 6, the size of the left and right parts of space can be adjusted to adapt to the test requirements of different devices.

Claims

1. A space environment simulation device with a movable heat sink, characterized in that, The system includes a cylindrical vacuum chamber open at both ends and a vacuum chamber door. The cylindrical vacuum chamber is horizontally positioned, with the vacuum chamber door located at both ends. A cylindrical heat sink is installed inside the cylindrical vacuum chamber, and a door panel heat sink is installed on the vacuum chamber door. A movable heat sink is installed inside the cylindrical heat sink. The sidewalls of the cylindrical vacuum chamber are equipped with a first interface assembly and a second interface assembly, and the movable heat sink is equipped with a third interface assembly. The first interface assembly includes a first cylindrical body interface flange and a cooling bellows. The first end of the cooling bellows is equipped with a bellows interface flange, and the second end of the cooling bellows is equipped with a cooling pipe outer flange. The cooling pipe end of the cylindrical heat sink is connected to a cooling pipe inner flange, and the second end of the cooling bellows extends into the cylindrical vacuum chamber from the first cylindrical body interface flange. The outer flange of the refrigeration pipe is sealed to the inner flange of the refrigeration pipe, and the bellows interface flange is sealed to the first cylindrical interface flange; the second interface assembly includes a second cylindrical interface flange and an outer flange, the outer flange being sealed to the second cylindrical interface flange, and a heater wiring conduit fixedly installed on the outer flange; the third interface assembly includes a sealed housing, the sealed housing being provided with a heater connector for sealing and fixing to the cold end of the armored heater of the movable heat sink and a heating bellows connector, the heating bellows connector and the heating wire conduit being connected to the heater wiring conduit through the heating bellows, and the wiring of the armored heater passing through the sealed housing and the heating bellows from the heater wiring conduit.

2. The space environment simulation device with a movable heat sink according to claim 1, characterized in that, The movable heat sink includes a heat sink base plate, with rollers at the bottom of the heat sink base plate and a guide rail inside the cylindrical heat sink. The rollers cooperate with the guide rail to move the movable heat sink along the guide rail.

3. The space environment simulation device with a movable heat sink according to claim 2, characterized in that, The guide rail has two sections, one of which is a triangular guide rail, and the roller that cooperates with the triangular guide rail is a grooved roller.

4. The space environment simulation device with a movable heat sink according to claim 2 or 3, characterized in that, The guide rail is parallel to the axial direction of the cylindrical heat sink.

5. The space environment simulation device with a movable heat sink according to claim 2, characterized in that, A support frame is fixedly connected to the heat sink base plate, and the rollers are installed at the bottom of the support frame.

6. The space environment simulation device with a movable heat sink according to claim 1, characterized in that, The heater connector includes a fixed section and a movable section sleeved on the fixed section. The cold end of the armored heater is provided with a connecting part, which is threadedly connected to the movable section. The end face of the connecting part is sealed and mated with the end face of the fixed section.

7. The space environment simulation device with a movable heat sink according to claim 1, characterized in that, The refrigeration corrugated pipe is provided with a refrigeration transition pipe. One end of the refrigeration transition pipe is connected to the refrigeration pipe end of the cylindrical heat sink, and the other end of the refrigeration transition pipe extends out of the corrugated pipe interface flange.

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