Space environment simulation device with movable heat sink

Abstract

The invention discloses a space environment simulation device with a movable heat sink, which is provided with a horizontal cylindrical vacuum chamber with two open ends and a gate, 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 connector assembly comprises a refrigeration corrugated pipe, one end of the refrigeration corrugated pipe is connected with the first barrel connector flange through a corrugated pipe connector flange, and the other end of the refrigeration corrugated pipe extends into the vacuum chamber and is in butt joint with a refrigeration pipe inner flange at the barrel-shaped heat sink refrigeration pipe end through a refrigeration pipe outer flange. The second connector assembly comprises a second barrel connector flange and an external flange, and a fixed heater wiring penetrating pipe is arranged on the external flange. And the third interface assembly comprises a closed shell, is provided with a heater joint and a heating corrugated pipe joint which are fixedly connected with the cold end of the movable heat sink armored heater in a sealing manner, and is butted with the heater wiring through pipe. The problem of interface damage caused by thermal expansion and cold contraction of the heat sink and the problem of installation of the heat sink movable part can be solved.

Description

Technical Field

[0001] The invention relates to a space environment simulation device, belonging to the technical field of physical experiment equipment. Background Art

[0002] A fixed heat sink is generally provided in a space environment simulation device, and the fixed heat sink forms a test space of fixed size. In a large space environment simulation device, the fixed test space is not conducive to the joint test of multiple devices, so it is considered to use a movable heat sink to construct a test space with variable space size. To form a test space with variable space size, two openable and closable parts need to be set on the heat sink. According to the structure of the heat sink in the prior art, the openable and closable parts are set on the door of the vacuum chamber. However, in this way, the connection of the refrigerant pipeline of the middle part of the heat sink and the heating component need to be carried out 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 interface position to deform when the heat sink is deformed, destroying the vacuum. 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 heating component needs to use an armored heater, but the cold end of the armored heater is not resistant to vacuum, so how to set the heater installation structure of the movable heat sink is also a problem that needs to be solved. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the present invention provides a space environment simulation device with a movable heat sink, which solves the problem of interface damage caused by thermal expansion and contraction of the heat sink and the problem of heater installation and connection of the heat sink movable part.

[0004] The technical solution of the present invention is as follows: a space environment simulation device with a movable heat sink, comprising a cylindrical vacuum chamber with openings at both 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 component and a second interface component are arranged on the side wall of the cylindrical vacuum chamber, and the movable heat sink is provided with a third interface component; the first interface component comprises a first cylinder interface flange and a refrigeration bellows, the first end of the refrigeration bellows is provided with a bellows interface flange, the second end of the refrigeration bellows is provided with a refrigeration pipe outer flange, the refrigeration pipe end of the cylindrical heat sink is connected to the refrigeration pipe inner flange, and the second end of the refrigeration bellows is connected from the first cylinder The interface flange extends into the cylindrical vacuum chamber, the outer flange of the refrigeration pipe is sealed and connected to the inner flange of the refrigeration pipe, and the bellows interface flange is sealed and connected to the first cylinder interface flange; the second interface component includes a second cylinder interface flange and an external flange, the external flange is sealed and connected to the second cylinder interface flange, and a fixed heater wiring through-tube is provided on the external flange; the third interface component includes a closed shell, and the closed shell is provided with a heater joint and a heating bellows joint for sealing and fixing with the cold end of the armored heater of the mobile heat sink, the heating bellows joint and the heating wire through-tube are connected to the heater wiring through-tube through the heating bellows, and the wiring of the armored heater passes through the closed shell and the heating bellows and out of the heater wiring through-tube.

[0005] Furthermore, the movable heat sink comprises a heat sink bottom plate, a roller is provided at the bottom of the heat sink bottom plate, a guide rail is provided inside the cylindrical heat sink, and the roller cooperates with the guide rail to enable the movable heat sink to move along the guide rail.

[0006] Furthermore, the guide rails are provided with two, one of which is a triangular guide rail, and the roller matched with the triangular guide rail is a groove wheel. The groove wheel is matched with the triangular guide rail to limit the left and right deviation of the heat sink.

[0007] Furthermore, the guide rail is parallel to the axial direction of the cylindrical heat sink.

[0008] Furthermore, a support frame is fixedly connected to the heat sink bottom plate, and the roller is installed at the bottom of the support frame. The support frame improves the strength of the heat sink bottom plate.

[0009] Furthermore, the heater joint 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, the connecting part is threadedly connected to the movable section, and the end face of the connecting part is sealingly connected to the end face of the fixed section.

[0010] Furthermore, a refrigeration transition pipe is provided in the refrigeration bellows, one end of the refrigeration transition pipe is butted against 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 advantages of the technical solution provided by the present invention are: The present invention realizes the connection of the refrigeration pipe of the heat sink by means of the first interface component in which the refrigeration bellows is built into the bellows interface flange, provides the refrigeration pipe with freedom of movement relative to the wall of the vacuum chamber, avoids the vacuum damage at the interface position due to the thermal expansion and contraction of the heat sink, and can reduce the radial distance of the heat sink refrigeration pipe in the cylindrical vacuum chamber, which is convenient for the installation of the cylindrical heat sink. Through the cooperation of the second interface component and the third interface component, a sealed space without vacuum requirement is formed in the cylindrical vacuum chamber for the installation of the cold end of the armored heater, which does not affect the movement of the movable heat sink and ensures that the cold end of the armored heater is not damaged. The connection is facilitated by the closed shell for connection and installation of multiple armored heaters, and the number of connecting pipelines is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of a space environment simulation device with a movable heat sink.

[0013] Figure 2 It is a structural schematic diagram of the first interface component.

[0014] Figure 3 Schematic diagram of the structure of the active heat sink and its connection.

[0015] Figure 4 Schematic diagram of the roller and guide rail matching structure of the movable heat sink ( Figure 3 A).

[0016] Figure 5 It is a structural schematic diagram of the second interface component.

[0017] Figure 6 It is a structural diagram of the third interface component. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading this description, various equivalent modifications to this description by those skilled in the art fall within the scope defined by the claims attached to this application.

[0019] Please combine Figures 1 to 6 As shown, the space environment simulation device with a movable heat sink in this embodiment includes a vacuum chamber body and a corresponding vacuum pumping system, a cooling system, etc., wherein the vacuum pumping system and the cooling system are conventional settings in the prior art and will not be described in detail.

[0020] The main body of the vacuum chamber includes a cylindrical vacuum chamber 1 with openings at both ends, and vacuum chamber doors 2 located at both ends of the cylindrical vacuum chamber 1. The main body of the vacuum chamber, which needs to be equipped with a movable heat sink to change the test space, has a large volume, and for ease of operation, the main body of the vacuum chamber is placed horizontally. That is, the cylindrical vacuum chamber 1 is installed on the ground in a horizontal state with the cylindrical axis through multiple supporting feet 3, and the vacuum chamber door 2 is generally opened and closed by means of hinges. 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 respectively.

[0021] In the vacuum chamber, a heat sink provides a high and low temperature environment for the test equipment. In this embodiment, the heat sink mainly includes three parts, namely, a cylindrical heat sink 4, a door plate heat sink 5 and a movable heat sink 6.

[0022] The door plate heat sink 5 has the same structure as the heat sink installed in 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, in the shape of a cylinder with openings at both ends, and is also placed horizontally. The cooling pipe of the cylindrical heat sink 4 is connected to the cooling source outside the vacuum chamber through the first interface assembly 7.

[0023] The first interface assembly 7 includes a first cylinder interface flange 701 and a refrigeration bellows 702, the first end of the refrigeration bellows 702 is fixedly connected to the bellows interface flange 703, the second end of the refrigeration bellows 702 is fixedly connected to the refrigeration pipe outer flange 704, and the refrigeration pipe end 401 of the cylindrical heat sink 4 is fixedly connected to the 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 guaranteed to be sealed, and the connection between the refrigeration pipe end 101 and the refrigeration pipe inner flange 705 is also guaranteed to be sealed. A refrigeration transition pipe 706 is inserted into the refrigeration bellows 702. During the specific installation and connection, the second end of the refrigeration bellows 702 extends from the first cylinder interface flange 701 into the cylindrical vacuum chamber 1, the refrigeration pipe outer flange 704 is fixedly connected to the refrigeration pipe inner flange 705 by bolts, and the refrigeration pipe outer flange 704 and the refrigeration pipe inner flange 705 are sealed by a metal gasket. The connection point between the outer flange 704 of the refrigeration pipe and the inner flange 705 of the refrigeration pipe is located inside the refrigeration bellows 702. One end of the refrigeration transition pipe 706 is sealed and docked with the refrigeration pipe end 401 of the cylindrical heat sink 4 at the position of the inner flange 705 of the refrigeration pipe, and the other end extends out of the bellows interface flange 703. The bellows interface flange 703 and the first cylinder interface flange 701 are also connected by bolts, and the bellows interface flange 703 and the first cylinder interface flange 701 are provided with metal sealing gaskets to ensure sealing. In this way, the refrigeration bellows 702 is extended from the first cylinder interface flange 701 to the vacuum chamber for installation. The deformation of the refrigeration bellows 702 can meet the deformation requirements of the cylindrical heat sink 4 during high and low temperature experiments, ensuring that vacuum failure is not caused at the interface position. At the same time, the radial length of the refrigeration pipe end 401 of the cylindrical heat sink 4 is shortened. During installation, the radial movement distance of the cylindrical heat sink 4 is short, which fully meets the space limitation requirements and is easy to install.

[0024] A mobile heat sink 6 that can move along the axial direction of the cylindrical heat sink 4 is provided in the cylindrical heat sink 4, and two guide rails 8 extending along the axial direction of the cylindrical heat sink 4 are provided 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 rail. The mobile heat sink 6 includes a heat sink bottom plate 601, a support frame 602, an armored heater 603, and a mobile heat sink cooling tube 604. The heat sink bottom plate 601 is approximately circular and 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 to strengthen the structure of the heat sink bottom plate 601, and facilitates the installation of the roller 605. The roller 605 is installed at the bottom of the support frame 602, and the roller 605 runs on the aforementioned guide rail 8. The corresponding roller 605 includes two groups, one of which is a V-groove wheel that cooperates with the triangular guide rail 8. The V-groove wheel cooperates with the triangular guide rail 8 to limit the moving direction of the movable heat sink 6 to the left and right to ensure smooth movement.

[0025] The wiring installation of the armored heater 603 on the mobile heat sink 6 is carried out through the second interface component 9 and the third interface component 10, and the connection installation of the mobile heat sink cooling pipe 604 is carried out through the second interface component 9. Figure 5 and Figure 6 As shown. The second interface assembly 9 includes a second cylinder interface flange 901 and an external flange 902, the external flange 902 is sealed and docked with the second cylinder interface flange 901, and the external flange 902 is provided with a fixed heater wiring through-tube 903 and a refrigeration through-tube 904, wherein one end of the refrigeration through-tube 904 located in the cylindrical vacuum chamber 1 is sealed and docked with the mobile heat sink refrigeration tube 604 through the bellows 11. The third interface assembly 10 includes a sealed shell 1001, and the sealed shell 1001 is provided with a heater joint and a heating bellows joint 1002 for sealing and fixing with the cold end of the armored heater 603 of the mobile heat sink 6. The number of heater joints is generally set to two, which are used to connect the two poles of the armored heater 603. The heater joint includes a fixed section 1003 and a flexible section 1004 sleeved on the fixed section 1003, and the cold end of the armored heater 603 is provided with a connecting portion 1005, and the connection portion 1005 and the cold end of the armored heater 603 are sealed. The connection part 1005 is threadedly connected to the flexible section 1004, and the end face of the connection part 1005 is sealed and docked with the end face of the fixed section 1003. The heating bellows joint 1002 is generally set as one, which is a fixed structure with external threads. Flexible joints are set at both ends of the heating bellows 12, which are sealed and docked with the heating bellows joint 1002 and the heater wiring through-tube 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 through the heating bellows 1002 from the heater wiring through-tube 903. Through the aforementioned third interface assembly 10, heating bellows 12 and heater wiring through-tube 903, 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, ensuring the normal operation of the armored heater 603 and will not be damaged by the vacuum environment in the vacuum chamber.

[0026] Through the structure of this embodiment, the space of the cylindrical heat sink 4 is divided into two parts, the left and right parts, by the movable heat sink 6, and the two vacuum chamber doors 2 serve as the opening and closing ends of the two parts of the space respectively, so that relevant operations can be performed on two test equipments at the same time. In addition, by moving the movable heat sink 6, the size of the left and right parts of the space can be adjusted to meet the test requirements of different equipments.

Claims

1. A space environment simulation device with a movable heat sink, characterized in that: It comprises a cylindrical vacuum chamber with openings at both 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 component and a second interface component are arranged on the side wall of the cylindrical vacuum chamber, and the movable heat sink is provided with a third interface component; the first interface component comprises a first cylinder interface flange and a refrigeration bellows, the first end of the refrigeration bellows is provided with a bellows interface flange, the second end of the refrigeration bellows is provided with a refrigeration pipe outer flange, the refrigeration pipe end of the cylindrical heat sink is connected with a refrigeration pipe inner flange, and the second end of the refrigeration bellows extends into the cylindrical vacuum chamber from the first cylinder interface flange, The outer flange of the refrigeration pipe is sealed and connected to the inner flange of the refrigeration pipe, and the bellows interface flange is sealed and connected to the first cylinder interface flange; the second interface component includes a second cylinder interface flange and an external flange, the external flange is sealed and connected to the second cylinder interface flange, and a fixed heater wiring through-tube is provided on the external flange; the third interface component includes a closed shell, and the closed shell is provided with a heater joint and a heating bellows joint for sealing and fixing with the cold end of the armored heater of the mobile heat sink, the heating bellows joint and the heating wire through-tube are connected to the heater wiring through-tube through the heating bellows, and the wiring of the armored heater passes through the closed shell and the heating bellows and out of the heater wiring through-tube.

2. The space environment simulation device with a movable heat sink according to claim 1, characterized in that: The movable heat sink comprises a heat sink bottom plate, a roller is arranged at the bottom of the heat sink bottom plate, a guide rail is arranged inside the cylindrical heat sink, and the roller cooperates with the guide rail to enable the movable heat sink to move along the guide rail.

3. The space environment simulation device with a movable heat sink according to claim 2, characterized in that: There are two guide rails, one of which is a triangular guide rail, and the roller matched with the triangular guide rail is a groove wheel.

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 bottom plate, and the roller is 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 joint 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, the connecting part is threadedly connected to the movable section, and the end face of the connecting part is sealingly connected to 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: A refrigeration transition pipe is arranged inside the refrigeration bellows, one end of the refrigeration transition pipe is butted against 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.

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