Flexible thermal control device overall satellite-loading shape-preserving tool and flexible thermal control device overall satellite-loading shape-preserving method

Abstract

The invention relates to a flexible thermal control device overall satellite installation shape preserving tool and method, and belongs to the technical field of spacecraft part manufacturing and assembling. The method comprises the following steps: 1) developing a shape-preserving tool, and arranging a single machine and a piping process interface; 2) assembling each single machine in the thermal control device on a conformal tool interface, and adjusting the relative position of each single machine through accurate measurement to enable the single machine to meet the assembly tolerance requirement; (3) the pipeline is laid on the shape-preserving tool and fixed; (4) sampling the pipeline on the shape-preserving tool, cutting off redundant length, welding the pipeline with the reserved pipeline of the single equipment to form a whole, and keeping connection in the testing and testing processes; and (5) the connection state of the thermal control device is kept in the satellite assembling process, all components of the thermal control device are connected with the transfer lifting appliance and disconnected from the shape-preserving tool, and the components are transferred to the satellite assembling position in an integral lifting mode. Deformation of the thermal control device in the satellite installation process is effectively avoided, precise assembly is achieved, and it is ensured that the overall heat dissipation efficiency of the system is not affected.

Description

Technical Field

[0001] This invention belongs to the field of spacecraft component manufacturing and assembly technology, and relates to a flexible thermal control device integral assembly conformal tooling and method. Background Technology

[0002] A deployable thermal radiator is a disposable thermal radiator that retracts into the side wall of the spacecraft during launch and deploys to dissipate heat after entering orbit. It is an effective means of significantly increasing the heat dissipation area without increasing the size of the satellite or affecting its basic configuration. It can fundamentally solve the problem of insufficient heat dissipation area and improve the thermal design level and thermal adaptability of the satellite.

[0003] The deployable thermal radiator system consists of three main parts: a heat collection section, which collects heat from various loads, i.e., heat sources; a heat transfer section, which transfers the heat collected by the heat collection section from the collection point to the radiant plate; and a heat radiation section, which directly faces the ambient heat sink and radiates the heat input by the heat transfer section. In addition, a complete deployable thermal radiator system also includes auxiliary parts such as a deployment mechanism and a locking mechanism.

[0004] Currently, during the satellite assembly phase, deployable thermal radiators are typically assembled independently into individual units or components according to their functions and structural features. After passing testing and verification, they are then assembled onto the overall satellite structure and connected via cables, fluid pipelines, etc., to form a complete system. Gas exchange and heat transfer between the individual satellite units are mainly accomplished through extensive piping, with mating interfaces typically installed at the connections between the pipelines and individual units to achieve connection and sealing.

[0005] As satellites move towards miniaturization and more efficient heat exchange media are developed and applied, the amount of heat exchange media required by satellites is gradually decreasing. The cross-section of the heat pipes that transfer the heat exchange media is becoming smaller and their rigidity is weakening. The requirements for the airtightness of the media loop are gradually increasing. Traditional pipe joint connection methods can no longer meet the requirements for ultra-low leakage rates, so welding is required for connection.

[0006] Due to the small cross-section, long span, high flexibility, and relatively light weight of the pipelines in the thermal control device, uneven stress is easily caused by the weight of the pipelines themselves after filling with the medium and by the traditional method of manual lifting and assembly during satellite installation. This can easily lead to significant deformation, causing the thermal control device to undergo plastic deformation before satellite installation, making it impossible to achieve precise assembly on the entire satellite. Plastic deformation may also cause the pipeline cross-section to shrink, thus affecting the overall heat dissipation efficiency of the system. Summary of the Invention

[0007] The technical problem solved by this invention is to overcome the shortcomings of the prior art. This invention provides a flexible thermal control device integral mounting conformal tooling and method.

[0008] The technical solution of the present invention is as follows: A flexible thermal control device integrated satellite conforming tooling, including a conforming fixing device and a transfer sling; the conforming fixing device is used for the assembly and fixation of the thermal control device and its transfer between sites during overall tests; the transfer sling is used to hoist and transfer the entire thermal control device to the satellite assembly position; the thermal control device is used for the heat dissipation of on-board payload equipment, including a condenser, an evaporator, and pipelines, and the pipelines connect the condenser and the evaporator.

[0009] Furthermore, the conforming fixing device includes interface process parts, a main body frame, transfer caster assemblies, and adapter plates; the main body frame plays a main supporting role; the interface process parts are fixed on the main body frame to provide connection interfaces for the condenser; the adapter plates are fixed on the main body frame and its side to provide fixed support surfaces for the evaporator and pipelines; the transfer caster assemblies are fixed at the bottom end of the main body frame for the transfer of the conforming fixing device between sites.

[0010] Furthermore, the main body frame includes side frames, an upper cross frame, and a lower cross beam. The upper cross frame connects the left and right side frames; the lower cross beam is located below the upper cross frame and is parallel to it, while connecting the left and right side frames for support and reinforcement; the interface process parts are fixed on the upper cross frame; an adapter plate is fixed on one side frame.

[0011] Furthermore, the interface process parts include four equal-height supports. The bottom ends of the supports are fixed to the upper cross frame, and the top ends of the supports support the condenser.

[0012] Furthermore, the pipelines are parallel to the main structure plane of the adapter plate, and the pipelines are fixed on the main structure plane of the adapter plate through pipeline clamps.

[0013] Furthermore, the pipeline clamps include a clamp base and a clamp cover plate; the clamp base is fixed on the main structure plane of the adapter plate; the clamp cover plate and the clamp base are connected by fasteners to fix and limit the pipelines.

[0014] Furthermore, the transfer sling includes a main beam, lifting rings, auxiliary beams, vertical beams, a spirit level, and a single-unit hoisting interface;

[0015] The main beam is in the shape of a "worker" character, including a central beam, a left cross beam, and a right cross beam. The two ends of the central beam are perpendicularly connected to the central positions of the left cross beam and the right cross beam respectively;

[0016] The lifting rings are located on the left cross beam and the right cross beam for connecting with the overhead crane hook;

[0017] Two auxiliary beams are located on both sides of the central beam and are parallel to it, and the two ends are respectively fixed to the left cross beam and the right cross beam;

[0018] The vertical beam is connected to the right cross beam of the main beam in a hinged form, and the vertical beam can rotate around the rotating shaft;

[0019] The spirit level is fixed at the center of the main beam and on the outside of the right crossbeam.

[0020] The single-unit hoisting interface is connected to the left crossbeam of the main beam to enable the hanging and fixing of the thermal control device.

[0021] Furthermore, the single-unit hoisting interface is suspended below the left crossbeam of the main beam, and the condenser is fixed to the single-unit hoisting interface by steel wire rope; the evaporator is fixed to the vertical beam; and the pipeline is connected to the secondary beam by hoisting rope.

[0022] A method for integral mounting and conformal design of a flexible thermal control device, comprising:

[0023] Based on the installation location of the thermal control device on the satellite and the spatial routing of the pipeline, a conformal fixing device was developed, and process interfaces for the individual unit and piping of the thermal control device were set.

[0024] Each unit in the thermal control device is assembled onto the conformal fixing device interface, and the relative position of each unit is precisely measured and adjusted by a laser tracker to meet the assembly tolerance requirements.

[0025] Based on the three-dimensional model of the pipeline, the pipeline is CNC formed and a slack is reserved at both ends. The pipeline is then laid on the conformal fixing device and fixed.

[0026] After sampling and cutting off the excess length of the pipeline on the conformal fixing device, it is welded to the reserved pipeline of the single equipment to form a whole, and the connection is maintained during testing and experimentation.

[0027] During the satellite installation process, the thermal control device is kept connected. All components of the thermal control device are connected to the transfer hoist and disconnected from the conformal fixing device, and then transferred to the satellite assembly position by hoisting as a whole.

[0028] Furthermore, the overall hoisting steps are as follows:

[0029] Use slings and turnbuckles to connect the lifting ring to the overhead crane hook;

[0030] Adjust the levelness of the main beam by adjusting the length of the turnbuckles;

[0031] Once the main beam is determined to be level using a spirit level, it is transferred as a whole to the satellite assembly position.

[0032] The advantages of this invention compared to the prior art are:

[0033] This invention designs a flexible thermal control device assembly tooling and method for conformal assembly, which is used to fix the condenser, evaporator and main piping of the flexible thermal control device in the satellite in a conformal manner during the research and development and testing process, and to transfer the entire device in a conformal manner during the overall assembly process. This avoids the deformation of the thermal control device during the assembly process, achieves precision assembly, and ensures that the overall heat dissipation efficiency of the system is not affected. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the conformal tooling of the present invention;

[0035] Figure 2 This is a schematic diagram of the snap-fit ​​structure of the conformal tooling in this invention;

[0036] Figure 3 This is a schematic diagram of the transfer caster structure of the conformal tooling in this invention;

[0037] Figure 4 This is a schematic diagram of the connection state of the transfer lifting device of the present invention. Detailed Implementation

[0038] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1 As shown, a flexible thermal control device integral constitutive fixture includes: a constitutive fixing device 2 and a transfer hoist 3; the constitutive fixing device 2 includes an interface process component 201, a main frame 202, a transfer caster assembly 203, an adapter plate 204, and a pipe clamp 205; the thermal control device 1 includes a condenser 101, an evaporator 102, and pipes 103;

[0040] The interface component 201 consists of four supports, which are fixed on the main frame 202. The condenser 101 is supported on the top of the interface component 201, providing it with a precise connection interface.

[0041] The main frame 202 is formed by welding profiles of the same specifications and provides support for the thermal control device 1. The main frame 202 includes a side frame, an upper cross frame, and a lower cross beam. The upper cross frame connects the left and right side frames and provides support for the condenser 101 and the pipeline 103. The lower cross beam connects the left and right side frames and provides support and reinforcement for the main frame 202. The evaporator 102 is fixed on one side frame.

[0042] like Figure 3 As shown, the transfer caster assembly 203 is fixed to the bottom of the side frame of the main frame 202 by a combination of plug-in and screw connections, and is used for the transfer of the thermal control device 1 between sites during the overall test.

[0043] The adapter plate 204 is manufactured from a 3mm thin-walled sheet through a forming process. The adapter plate 204 is connected and fixed to the main frame 202 by fasteners. The main structural plane of the adapter plate 204 is parallel to the direction of the pipe 103. The pipe 103 is fixed to the main structural plane of the adapter plate 204 by pipe clips 205. Holes are made at the positions of the pipe clips 205 and rivet nuts 206 are installed to provide connection interfaces for the pipe clips 205.

[0044] like Figure 2 As shown, the pipe clamp 205 consists of a clamp base 2052 and a clamp cover plate 2051. The clamp base 2052 is aligned with the rivet nut 206 on the adapter plate 204 and is fixed by screws. The clamp cover plate 2051 and the clamp base 2052 are connected by screws to fix and limit the pipe.

[0045] Conformal fixtures should take into account the need for the overall hoisting and removal of the thermal control device 1, and provide clearance space.

[0046] like Figure 4 As shown, the transfer lifting device 3 mainly includes a main beam 301, a lifting ring 302, a secondary beam 303, a vertical beam 304, a level 305, and a single-machine lifting interface 306. The main beam 301 is in the shape of an "I" and is used for the main load-bearing structure. It includes a central beam, a left crossbeam 309, and a right crossbeam 308. The two ends of the central beam are vertically fixed to the left crossbeam 309 and the right crossbeam 308, respectively. The two secondary beams 303 are parallel to the central beam of the main beam 301 and are connected at both ends by bolts. The vertical beam 304 is hinged to the right crossbeam 308 of the main beam 301, allowing the vertical beam 304 to rotate around a pivot. A level 305 is fixed to the outer side of the right crossbeam 308 and the upper side of the central beam, respectively.

[0047] During the hoisting process, the transfer lifting device 3 uses slings and turnbuckles to connect the lifting ring 302 to the crane hook. The main beam 301 is leveled by adjusting the length of the turnbuckles, and the level gauge 305 determines whether the main beam 301 is level.

[0048] The single-unit hoisting interface 306 can be arranged on the main beam 301 and the vertical beam 304 to realize the horizontal and vertical hoisting and connection of single-unit equipment such as condenser 101, evaporator 102 and pipeline 103.

[0049] The single-unit hoisting interface 306 is suspended below the left crossbeam 309. The condenser 101 is suspended around the single-unit hoisting interface 306 by steel wire rope 307. The evaporator 102 is fixed on the vertical beam 304. The pipe 103 connects the condenser 101 and the evaporator 102. The pipe 103 is connected to the sub-beam 303 by a hoisting rope, and the vertical part hangs down naturally.

[0050] A conformal fixture method for the overall satellite mounting of a flexible thermal control device is provided. This conformal fixture method is used to fix the condenser 101, evaporator 102, and pipeline 103 of the flexible thermal control device 1 in a conformal manner during the development and testing process, and to transfer them in a conformal manner during the overall satellite mounting process. The method mainly includes the following steps:

[0051] 1) Based on the theoretical installation position of the thermal control device 1 on the satellite and the spatial direction of the fluid pipeline, develop conformal tooling and set up process interfaces for the single unit and piping.

[0052] 2) Assemble each unit in the thermal control device 1 onto the conformal tooling interface, and use a laser tracker to precisely measure and adjust the relative position of each unit to meet the tolerance range of 0.5mm.

[0053] 3) Based on the three-dimensional model of the pipeline 103, the pipeline 103 is formed by CNC and sufficient allowance is reserved at both ends. The pipeline 103 is then laid on the conformal fixture and fixed.

[0054] 4) After sampling and cutting off the excess length of the pipe 103 on the conformal tooling, weld it to the reserved pipe of the single equipment to form an integral whole, and maintain the connection during testing and experimentation.

[0055] 5) During the satellite installation process, keep the thermal control device 1 connected. Connect all components of the thermal control device 1 to the transfer hoist 3 and disconnect it from the conformal tooling. Transfer it to the satellite assembly position in the form of an overall hoist.

[0056] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A flexible thermal control device integral star-shaped conformal tooling, characterized in that: It includes a conformal fixing device (2) and a transfer hoist (3); the conformal fixing device (2) is used for the assembly, fixing and overall testing of the thermal control device (1) and its transfer between sites; the transfer hoist (3) is used to hoist and transfer the thermal control device (1) as a whole to the satellite assembly position; the thermal control device (1) is used for heat dissipation of the on-board payload equipment, including a condenser (101), an evaporator (102) and a pipeline (103), and the pipeline (103) connects the condenser (101) and the evaporator (102).

2. The integral conformal tooling for a flexible thermal control device according to claim 1, characterized in that: The conformal fixing device (2) includes an interface component (201), a main frame (202), a transfer caster assembly (203), and a transition plate (204). The main frame (202) serves as the main support. The interface component (201) is fixed on the main frame (202) to provide a connection interface for the condenser (101). The transition plate (204) is fixed on the main frame (202) and its side to provide a fixed support surface for the evaporator (102) and the pipeline (103). The transfer caster assembly (203) is fixed at the bottom of the main frame (202) for transporting the conformal fixing device (2) between sites.

3. The integral conformal tooling for a flexible thermal control device according to claim 2, characterized in that: The main frame (202) includes a side frame, an upper horizontal frame, and a lower horizontal beam. The upper horizontal frame connects the left and right side frames. The lower horizontal beam is located below the upper horizontal frame and is parallel to it. It also connects the left and right side frames for support and reinforcement. An interface component (201) is fixed on the upper horizontal frame. A transition plate (204) is fixed on one of the side frames.

4. The integral conformal tooling for a flexible thermal control device according to claim 3, characterized in that: The interface component (201) includes four supports of equal height, with the bottom of the supports fixed to the upper horizontal frame and the top of the supports supporting the condenser (101).

5. The integral conformal tooling for a flexible thermal control device according to claim 2, characterized in that: The main structural planes of the pipeline (103) and the adapter plate (204) are parallel, and the pipeline (103) is fixed on the main structural plane of the adapter plate (204) by pipeline clips (205).

6. The integral conformal tooling for a flexible thermal control device according to claim 5, characterized in that: The pipeline clip (205) includes a clip base (2052) and a clip cover plate (2051); the clip base (2052) is fixed on the main structural plane of the adapter plate (204); the clip cover plate (2051) and the clip base (2052) are connected by fasteners to fix and limit the pipeline (103).

7. The integral conformal tooling for a flexible thermal control device according to claim 1, characterized in that: The transfer lifting device (3) includes a main beam (301), a lifting ring (302), a secondary beam (303), a vertical beam (304), a level (305), and a single-machine lifting interface (306); The main beam (301) is in the shape of an "I" and includes a central beam, a left crossbeam (309) and a right crossbeam (308). The two ends of the central beam are perpendicularly connected to the center positions of the left crossbeam (309) and the right crossbeam (308), respectively. The lifting ring (302) is located on the left crossbeam (309) and the right crossbeam (308) and is used to connect with the crane hook; Two secondary beams (303) are located on both sides of the central beam and are parallel to it, with their ends fixedly connected to the left crossbeam (309) and the right crossbeam (308) respectively; The vertical beam (304) is connected to the right crossbeam (308) of the main beam (301) by a hinge, and the vertical beam (304) can rotate around the axis of rotation; A level (305) is fixed at the center of the central beam of the main beam (301) and on the outside of the right crossbeam (308); The single-unit hoisting interface (306) is connected to the left crossbeam (309) of the main beam (301) to realize the hoisting and fixing of the thermal control device (1).

8. The integral conformal tooling for a flexible thermal control device according to claim 7, characterized in that: The single-unit hoisting interface (306) is suspended below the left crossbeam (309) of the main beam (301). The single-unit hoisting interface (306) is used to fix the condenser (101) by steel wire rope (307). The evaporator (102) is fixed on the vertical beam (304). The pipeline (103) is connected to the secondary beam (303) by a hoisting rope.

9. A method for integrally mounting a flexible thermal control device with conformal characteristics, characterized in that... include: Based on the installation position of the thermal control device (1) on the satellite and the spatial orientation of the pipeline (103), a conformal fixing device (2) is developed, and the single unit and piping process interface of the thermal control device (1) are set. Each unit in the thermal control device (1) is assembled onto the interface of the conformal fixing device (2), and the relative position of each unit is precisely measured and adjusted by a laser tracker to meet the assembly tolerance requirements. Based on the three-dimensional model of the pipeline (103), the pipeline (103) is formed by CNC and with a slack at both ends, and the pipeline (103) is laid on the conformal fixing device (2) and fixed. After sampling and cutting off the excess length of the pipe (103) on the conformal fixing device (2), it is welded to the reserved pipe of the single equipment to form an integral whole, and the connection is maintained during the testing and experimentation process; During the satellite installation process, the thermal control device (1) is kept connected. All components of the thermal control device (1) are connected to the transfer hoist (3) and disconnected from the conformal fixing device (2), and transferred to the satellite assembly position in the form of an overall hoist.

10. A method for integral constitutive mounting of a flexible thermal control device according to claim 9, characterized in that, The overall hoisting steps are as follows: Use slings and turnbuckles to connect the lifting ring (302) to the crane hook; Adjust the level of the main beam (301) by adjusting the length of the turnbuckle; When the main beam (301) is determined to be level by using a level (305), it is transferred as a whole to the satellite assembly position.

Images