Propellant replenishment full-process verification test system

Abstract

The application provides a propellant supplementing full-process verification test system, which comprises a test table fixed base, a moving platform arranged on the test table fixed base, the position of the moving platform relative to the test table fixed base being adjustable, a docking mechanism comprising a docking mechanism active end and a docking mechanism passive end, the docking mechanism active end being fixedly arranged on the test table fixed base, and the docking mechanism passive end being fixedly arranged on the moving platform, the propellant supplementing pipeline being in communication when the docking mechanism active end and the docking mechanism passive end are coupled, a pressure sensor being arranged in the propellant supplementing pipeline, and the pressure sensor being used for monitoring the air pressure in the propellant supplementing pipeline in real time. The application solves the problem that the full-process task function verification of mechanism docking, propellant supplementing, high-pressure gas supplementing and mechanism separation cannot be verified in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of aerospace equipment verification technology, and in particular relates to a propellant replenishment full-process verification test system. Background Technology

[0002] Currently, the on-orbit lifespan of spacecraft such as satellites and space stations is directly affected by propellant consumption. Therefore, on-orbit refueling is typically achieved using a docking and separation mechanism and a propellant replenishment system. The docking and separation mechanism establishes the mechanical and electrical connection between the servicing spacecraft and the refueled spacecraft. The propellant replenishment system, composed of tanks, gas cylinders, valves, pipelines, and floating disconnectors, performs the gas-liquid refueling function. Due to the involvement of two subsystems, the product has multiple functions and a complex mission process, requiring ground-based testing and verification of the replenishment system. In existing technologies, propellant replenishment test systems are verified step-by-step in the laboratory through docking and separation mechanism deviation tests and propulsion system replenishment tests. However, this approach has the following shortcomings:

[0003] 1) Unable to verify the full-process task functionality from mechanism docking, airtightness inspection, propellant replenishment, pipeline propellant purging, high-pressure gas replenishment, and mechanism separation;

[0004] 2) It cannot simulate the pressure, humidity and other environments of the interface connection and separation. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a full-process verification test system for propellant replenishment, thereby resolving the issue that existing technologies cannot verify the full-process functional verification of mechanism docking, propellant replenishment, high-pressure gas replenishment, and mechanism separation.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: a propellant replenishment full-process verification test system, comprising: a test bench fixed base; a motion platform disposed on the test bench fixed base, the position of the motion platform relative to the test bench fixed base being adjustable; a docking mechanism, comprising a docking mechanism active end and a docking mechanism passive end, the docking mechanism active end being fixedly disposed on the test bench fixed base, and the docking mechanism passive end being fixedly disposed on the motion platform; a floating electrical connector, comprising a floating electrical connector active end and a floating electrical connector passive end, the floating electrical connector active end being disposed on the docking mechanism active end, and the floating electrical connector passive end being disposed on the docking mechanism passive end; and a floating disconnector, comprising a floating disconnector active end and a floating disconnector passive end, the floating disconnector active end being disposed on the docking mechanism passive end. On the active end of the docking mechanism, the passive end of the floating disconnector is disposed on the passive end of the docking mechanism; the mechanism controller is signal-connected to the active end of the docking mechanism and is used to drive the motor of the active end of the docking mechanism to move and connect with the passive end of the docking mechanism; the replenishment device controller is signal-connected to the active end of the floating disconnector and is used to drive the active end of the floating disconnector to move and connect with the passive end of the floating disconnector; when the active end of the docking mechanism and the passive end of the docking mechanism are coupled and connected, the active end of the floating electrical connector and the passive end of the floating electrical connector are connected to establish an electrical connection, and the active end of the floating disconnector and the passive end of the floating disconnector are connected to establish a propellant replenishment transmission channel, the propellant replenishment pipeline is connected, and a pressure sensor is installed in the propellant replenishment pipeline to monitor the gas pressure in the propellant replenishment pipeline in real time.

[0007] Preferably, the system also includes a first tank, a first tank valve, a second tank, and a second tank valve. When the propellant replenishment pipeline is connected, the first tank valve and the second tank valve are opened to verify the propellant replenishment.

[0008] Preferably, the system further includes a first gas cylinder and a second gas cylinder, the valves of the first gas cylinder and the second gas cylinder being signal-connected to the replenishment device controller, for inputting helium into the propellant replenishment pipeline when the propellant replenishment pipeline is connected, so as to realize the airtightness check.

[0009] Preferably, the replenishment device controller is signal-connected to the pressure sensor, the first tank valve, and the second tank valve.

[0010] Preferably, the propellant replenishment device controller is electrically connected to the active end of the floating disconnector, and the propellant replenishment pipeline is connected when the active end of the floating disconnector is coupled to the passive end of the floating disconnector.

[0011] Preferably, the test system further includes a display, which is signal-connected to the supplementation device controller, and the supplementation device controller receives control commands from the display to perform the test process.

[0012] Preferably, the display is also used to display the pressure value of the sensor.

[0013] Preferably, the propellant replenishment pipeline is provided with a purging port, and the remaining propellant in the pipeline is purged by controlling the first tank valve and / or the second tank valve. Preferably, the test system further includes a humidity sensor, which is disposed in the propellant replenishment pipeline and is signal-connected to the replenishment device controller.

[0014] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art:

[0015] The technical solution of this invention realizes the full-process task function verification from docking mechanism capture and locking, airtightness inspection, propellant replenishment, pipeline propellant purging, high-pressure gas replenishment, and mechanism separation. The test system is simple to operate and highly efficient. Attached Figure Description

[0016] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of the full-process verification test system for propellant replenishment of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1-Fixed base of test bench, 2-Motion platform, 3-Active end of docking mechanism, 301-First storage tank, 302-Valve of first storage tank, 4-Passive end of docking mechanism, 401-Second storage tank, 402-Valve of second storage tank, 5-Active end of floating disconnector, 6-Passive end of floating disconnector, 7-Propellant replenishment pipeline, 8-Replenishment device controller, 10-Display, 11-Active end of floating electrical connector, 12-Passive end of floating electrical connector, 13-Mechanism controller, 14-First gas cylinder, 15-Second gas cylinder. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise ratios, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Example

[0023] like Figure 1 This invention provides a propellant replenishment full-process verification test system, comprising: a test bench fixed base 1; a motion platform 2, disposed on the test bench fixed base 1, the position of the motion platform 2 relative to the test bench fixed base 1 being adjustable; a docking mechanism, comprising a docking mechanism active end 3 and a docking mechanism passive end 4, the docking mechanism active end 3 being fixedly disposed on the test bench fixed base 1, and the docking mechanism passive end 4 being fixedly disposed on the motion platform 2; a floating electrical connector, comprising a floating electrical connector active end 11 and a floating electrical connector passive end 12, the floating electrical connector active end 11 being disposed on the docking mechanism active end 3, and the floating electrical connector passive end 12 being disposed on the docking mechanism passive end 4; and a floating disconnector, comprising a floating disconnector active end 5 and a floating disconnector passive end 6, the floating disconnector active end 5 being disposed on the docking mechanism active end. 3. The passive end 6 of the floating disconnector is disposed on the passive end 4 of the docking mechanism; the mechanism controller 13 is signal-connected to the active end 3 of the docking mechanism and is used to drive the motor of the active end 3 of the docking mechanism to move and connect with the passive end 4 of the docking mechanism; the replenishment device controller 8 is signal-connected to the active end 5 of the floating disconnector and is used to drive the active end 5 of the floating disconnector to move and connect with the passive end 6 of the floating disconnector; when the active end 3 of the docking mechanism and the passive end 4 of the docking mechanism are coupled, the active end 11 of the floating electrical connector and the passive end 12 of the floating electrical connector are connected to establish an electrical connection, the active end 5 of the floating disconnector and the passive end 6 of the floating disconnector are connected to establish a propellant replenishment transmission channel, the propellant replenishment pipeline 7 is connected, and a pressure sensor (not shown) is provided in the propellant replenishment pipeline 7 to monitor the gas pressure in the propellant replenishment pipeline 7 in real time.

[0024] The technical solution of this embodiment includes a docking mechanism to verify the capture and locking task; a pressure sensor is installed in the propellant replenishment pipeline 7 to enable airtightness checks. Therefore, compared with the prior art, it can verify more mission procedures, thereby improving the safety of on-orbit propellant replenishment.

[0025] Preferably, the system further includes a first tank 301, a first tank valve 302, a second tank 401, and a second tank valve 402. When the propellant replenishment pipeline 7 is connected, the first tank valve 302 and the second tank valve 402 are opened to verify the propellant replenishment.

[0026] The technical solution of this embodiment simulates the actual propellant replenishment process in orbit by setting up a first storage tank 301, a first storage tank valve 302, a second storage tank 401, and a second storage tank valve 402, thus making the verification process of the test system of this embodiment more complete.

[0027] Preferably, the system further includes a first gas cylinder 14 and a second gas cylinder 15, the valves of the first gas cylinder 14 and the second gas cylinder 15 being signal-connected to the replenishment device controller 8, for inputting helium into the propellant replenishment pipeline 7 when the propellant replenishment pipeline 7 is connected, so as to realize airtightness check.

[0028] In this embodiment, a first gas cylinder 14 and a second gas cylinder 15 are preferably provided. After the propellant replenishment pipeline 7 is connected and docked, helium is introduced into the pipeline. If the pressure does not decrease after a certain period of time, it indicates that the pipeline is airtight and there will be no danger due to propellant leakage when replenishing propellant in orbit.

[0029] Preferably, the replenishment device controller 8 is signal-connected to the pressure sensor, the first tank valve 302, and the second tank valve 402.

[0030] Preferably, this verification system is equipped with a replenishment device controller 8, which is connected to the pressure sensor, the first tank valve 302, and the second tank valve 402, thereby enabling automatic verification of the entire process based on preset programs and / or threshold conditions, reducing manual operation and improving verification efficiency.

[0031] This embodiment only illustrates the concept of automatic docking between the active end 3 and the passive end of the docking mechanism. Of course, this embodiment only illustrates one possible implementation scheme. Any active docking scheme in the prior art should be regarded as an equivalent alternative to this scheme.

[0032] Preferably, the propellant replenishment device controller 8 is electrically connected to the active end 5 of the floating disconnector, and the propellant replenishment pipeline 7 is connected when the active end 5 of the floating disconnector is coupled to the passive end 6 of the floating disconnector.

[0033] The supplementary device controller 8 supplies power to the active end 5 of the floating disconnector and sends control signals.

[0034] Preferably, the test system further includes a display 10, which is signal-connected to the supplementation device controller 8. The supplementation device controller 8 receives control commands from the display 10 to perform the test process.

[0035] The display 10 is the human-machine interface of the supplementation device controller 8, and the process verification is realized by issuing control commands through the human-machine interface.

[0036] Preferably, the display is also used to display the pressure value of the sensor.

[0037] Preferably, the propellant replenishment pipeline is provided with a purging port, and the remaining propellant in the pipeline can be purged by controlling the first tank valve and / or the second tank valve.

[0038] This embodiment is equipped with a purging port. When there is propellant residue in the pipeline after replenishment, the first tank valve and / or the second tank valve are opened by controlling the first tank valve and / or the second tank valve to remove the propellant using the residual pressure in the first tank valve and / or the second tank, thereby eliminating the safety hazard caused by propellant leakage.

[0039] Preferably, the test system further includes a humidity sensor, which is disposed in the propellant replenishment pipeline 7 and is signal-connected to the replenishment device controller 8.

[0040] Preferably, in this embodiment, a humidity sensor is installed in the pipeline. For liquid propellant, the humidity sensor monitors whether there is residual propellant in the pipeline, thereby determining whether to perform a purging process. This improves the safety of the verification.

[0041] The technical solution of this embodiment realizes the full-process task function verification from docking mechanism capture and locking, airtightness inspection, propellant replenishment, pipeline propellant purging, high-pressure gas replenishment, and mechanism separation. The test system is simple to operate and highly efficient.

[0042] After the supplementary test is completed, the controller 8 of the supplementary device issues an unlocking command to drive the active end and passive end of the docking mechanism to separate in the opposite direction. Preferably, the docking and separation can be achieved by driving the corresponding motor to change the position of the active end 3 of the docking mechanism, and the transmission relationship between the motor and the active end 3 of the docking mechanism can be any form in the prior art.

[0043] Preferably, the propellant in this embodiment can be deionized water.

[0044] Preferably, it may also include a power supply module, which is set on the active end of the docking mechanism. After the active end 3 of the docking mechanism captures and locks the passive end 4 of the docking mechanism to achieve mechanical connection, it simultaneously realizes the plugging connection of the active end 5 of the floating disconnector and the passive end 6 of the floating disconnector, establishing a gas-liquid connection channel between the service aircraft and the replenished aircraft. The power supply module supplies power to the display 10 and sends commands via the active end 11 and the passive end 12 of the floating electrical connector. After receiving the command, the display 10 displays the replenishment status, verifying the electrical connection function between the service aircraft and the replenished aircraft. After the active end 3 of the docking mechanism unlocks and separates the passive end 4 of the docking mechanism to achieve mechanical separation, it simultaneously realizes the unlocking and separation of the active end 11 and the passive end 12 of the floating electrical connector, and the display 10 is powered off.

[0045] In this embodiment, after the active end 3 of the docking mechanism captures and locks the passive end 4 of the docking mechanism to achieve mechanical connection, it simultaneously achieves initial error correction between the active end 5 and the passive end 6 of the floating disconnector. The replenishment device controller 8 supplies power to the active end 5 of the floating disconnector, drives the motor of the active end 5 of the floating disconnector to move into position, and realizes the plug-in connection between the active end 5 of the floating disconnector and the passive end 6 of the floating disconnector, establishing a gas-liquid connection channel between the service vehicle and the replenished vehicle for the next replenishment task. After the active end 3 of the docking mechanism captures the passive end 4 of the docking mechanism and the active end 5 of the floating disconnector to move into position to establish the mechanical, electrical, gas, and liquid channel, the entire replenishment process, including pipeline airtightness check, replenishment of propellant from the first tank 301 to the second tank 401 by air cushion compression, and pipeline propellant purging, is verified by controlling the opening and closing operations of related valves such as the first tank valve 302 and the second tank valve 402. This verifies the function of the service vehicle to replenish propellant to the replenished vehicle.

[0046] After the resupply mission is completed, the resupply device controller 8 supplies power to the active end 5 of the floating disconnector, drives the motor of the active end 5 of the floating disconnector to move in the reverse direction to achieve the unlocking and separation between the active end 5 of the floating disconnector and the passive end 6 of the floating disconnector, and disconnects the gas-liquid connection channel between the service aircraft and the resupply aircraft.

[0047] All the connections described above in this embodiment can be made using common connection methods such as threaded connections and riveted connections.

[0048] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A full-process verification test system for propellant replenishment, characterized in that, include: Test bench fixed base; A motion platform is mounted on the fixed base of the test bench, and the position of the motion platform relative to the fixed base of the test bench is adjustable. The docking mechanism includes an active end and a passive end, wherein the active end is fixedly mounted on the test bench base and the passive end is fixedly mounted on the motion platform. A floating electrical connector includes an active end and a passive end, wherein the active end is disposed on the active end of a docking mechanism and the passive end is disposed on the passive end of a docking mechanism. A floating disconnector includes a floating disconnector active end and a floating disconnector passive end, wherein the floating disconnector active end is disposed on the active end of the docking mechanism, and the floating disconnector passive end is disposed on the passive end of the docking mechanism. The mechanism controller is signal-connected to the active end of the docking mechanism and is used to drive the motor of the active end of the docking mechanism to move and connect to the passive end of the docking mechanism; The supplementary device controller is signal-connected to the active end of the floating disconnector and is used to drive the active end of the floating disconnector to move and connect with the passive end of the floating disconnector. When the active end and the passive end of the docking mechanism are coupled together, the active end of the floating electrical connector and the passive end of the floating electrical connector are connected to establish an electrical connection, and the active end and the passive end of the floating disconnector are connected to establish a propellant replenishment transmission channel. The propellant replenishment pipeline is connected, and a pressure sensor is installed in the propellant replenishment pipeline to monitor the gas pressure in the propellant replenishment pipeline in real time.

2. The propellant replenishment full-process verification test system according to claim 1, characterized in that, It also includes a first storage tank, a first storage tank valve, a second storage tank, and a second storage tank valve. When the propellant replenishment pipeline is connected, the first storage tank valve and the second storage tank valve are opened to verify the propellant replenishment.

3. The propellant replenishment full-process verification test system according to claim 2, characterized in that, The system also includes a first gas cylinder and a second gas cylinder. The valves of the first gas cylinder and the second gas cylinder are signal-connected to the replenishment device controller for inputting helium into the propellant replenishment pipeline when the propellant replenishment pipeline is connected, so as to realize the airtightness check.

4. The propellant replenishment full-process verification test system according to claim 2, characterized in that, The replenishment device controller is connected to the pressure sensor, the first tank valve, and the second tank valve.

5. The propellant replenishment full-process verification test system according to claim 4, characterized in that, The propellant replenishment device controller is electrically connected to the active end of the floating disconnector, and the propellant replenishment pipeline is connected when the active end of the floating disconnector is coupled to the passive end of the floating disconnector.

6. The propellant replenishment full-process verification test system according to claim 4, characterized in that, The test system also includes a display, which is signal-connected to the supplementation device controller. The supplementation device controller receives control commands from the display to perform the test process.

7. The propellant replenishment full-process verification test system according to claim 6, characterized in that, The display is also used to show the pressure value of the sensor.

8. The propellant replenishment full-process verification test system according to claim 4, characterized in that, The propellant replenishment pipeline is equipped with a purging port, which allows for the purging of remaining propellant from the pipeline by controlling the first tank valve and / or the second tank valve.

9. The propellant replenishment full-process verification test system according to claim 8, characterized in that, The test system also includes a humidity sensor, which is installed in the propellant replenishment pipeline and is signal-connected to the replenishment device controller.

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