Automatic docking device for pressure sensor and standard engine

Abstract

The invention relates to the technical field of dynamic burning rate testing of solid propellants, in particular to an automatic docking device for a pressure sensor and a standard engine. Comprising a tray assembly, a butt joint device and a test bench body, and the tray assembly and the butt joint device are arranged on the test bench body; a front end cover, an engine body and a rear end cover are arranged on the tray assembly, the front end cover is fixed on a tray, the engine body and the rear end cover are sequentially screwed on the front end cover, and a quick plug connector is arranged on the side face of the front end cover; the butt joint device comprises a fast-inserting air cylinder device and a pressure sensor, the fast-inserting air cylinder device pushes a piston rod to act through air pressure, and the pressure sensor is pushed towards a fast-inserting connector to be connected and fixed. Automatic butt joint installation, automatic ignition and remote control of the solid rocket engine are achieved, the automation degree of pressure sensor installation and ignition test in the standard burning rate solid rocket engine test is improved, and man-machine isolation in the standard burning rate solid rocket engine test is effectively achieved.

Description

Technical Field

[0001] This invention relates to the field of dynamic burning rate testing technology for solid propellants, specifically to a pressure sensor and a standard engine automatic docking device. Background Technology

[0002] Solid rocket standard combustion rate engines are primarily used to characterize the dynamic burning rate of composite solid propellants. The testing procedures for standard combustion rate engines are all performed manually. Currently, during the pressure sensor assembly process, pressure sensors are manually installed into the pressure testing holes using mechanical wrenches. This method is not only inefficient, but also poses safety risks due to face-to-face contact with the engine. Therefore, the technical application background is how to automate the assembly of pressure sensors on solid rocket standard combustion rate engines, avoiding direct contact between humans and the engine. However, there are currently few practical tests conducted in China under these experimental conditions, and there is a lack of effective testing equipment to achieve automated pressure sensor installation.

[0003] The solid rocket standard combustion rate engine is a standard test apparatus for evaluating the dynamic combustion performance of solid propellants. It is used by all propellant research and production units in China, each adhering to or referring to the standard GJB 96A-2001 "Standard Test Engine Types and Dimensions". During the operational testing of this engine, the pressure sensor has been installed manually. In recent years, with the increase in formulation development and engine propellant loading tasks, the amount of dynamic combustion rate testing has also increased. The disadvantages of manual pressure sensor assembly—time-consuming, labor-intensive, and posing high safety risks—have become increasingly apparent. Therefore, there is an urgent need to conduct research on optimizing and innovating the assembly and testing process. Achieving automated assembly and testing of the solid rocket standard combustion rate engine is of great significance for improving testing capabilities and enhancing the inherent safety of operations.

[0004] Solid rocket standard combustion rate engines are primarily used to characterize the dynamic burning rate of composite solid propellants. Currently, test personnel typically assemble components such as the engine casing, end caps, nozzle, ignition charge, and pressure sensors manually, followed by remote ignition tests and data acquisition and processing. The existing operational model has two main problems.

[0005] (1) During the assembly of pressure sensors, workers come into face-to-face contact with the engine containing the ignition charge, which poses a significant safety hazard.

[0006] (2) A large amount of toxic and harmful smoke and gas are generated during the test. After the test is completed, it takes more than 15 minutes for the operators to enter the test site to disassemble and assemble the next engine. The sensors need to be unscrewed manually, and the pressure sensors need to be screwed on after the next engine is assembled. The manual test is inefficient. Summary of the Invention

[0007] Based on the above-mentioned technical problems, this invention proposes an automatic docking device for pressure sensors and standard engines to solve the problems that the current manual operation mode is difficult to meet the needs of test tasks, and that face-to-face contact with ignition charges during test runs poses significant safety hazards. The device can complete the installation of pressure sensors through rapid docking, thereby increasing the amount of testing tasks.

[0008] To address the aforementioned technical problems, one objective of this invention is to provide an automatic docking device for a pressure sensor and a standard engine, comprising: a tray assembly 1, a docking device 2, and a test bench 3. The tray assembly 1 and docking device 2 are placed on the test bench; The tray assembly 1 is provided with a front cover 11, an engine body 12 and a rear cover 13. The front cover 11 is fixed on the tray, and the engine body 12 and the rear cover 13 are screwed on it in sequence. A quick connector 14 is provided on the side of the front cover 11. The docking device 2 includes a quick-connect cylinder device 21 and a pressure sensor 23. The quick-connect cylinder device 21 uses air pressure to push the piston rod to move, thereby pushing the pressure sensor 23 towards the quick-connect connector 14 for connection and fixation.

[0009] Furthermore, the docking device 2 also includes a positioning and locking device 22, which locks the pressure sensor 23 to prevent it from loosening.

[0010] Furthermore, the pressure sensor 23 is an explosion-proof sensor with an explosion-proof rating of not less than ExdllBT4 and a protection rating of not less than IP65.

[0011] Furthermore, the test platform 3 has an impact resistance greater than 5000N.

[0012] Furthermore, the positioning and locking device 22 is subjected to precision positioning by a testing fixture, with a positioning accuracy of ≤0.5m.

[0013] The above-mentioned one or more technical solutions of the present invention have at least one or more of the following technical effects: The present invention realizes automatic docking and installation, automatic ignition and remote control of solid rocket engines, improves the automation level of pressure sensor installation and ignition test of standard burning rate solid rocket engines, effectively realizes human-machine isolation in standard burning rate solid rocket engine test, reduces manual operation time and improves safety. Attached Figure Description

[0014] Figure 1 : Schematic diagram of the test function area; Figure 2 : Schematic diagram of tray assembly; Figure 3 Schematic diagram of the automatic docking device for solid rocket motor and pressure sensor; Wherein: 1-Tray assembly, 2-Dating device, 3-Test bench body, 11-Front end cover, 12-Engine body, 13-Rear end cover, 14-Quick connector, 21-Quick cylinder device, 22-Positioning and locking device, 23-Pressure sensor. Detailed Implementation

[0015] This invention relates to an automated testing system for standard combustion rate engines in solid rockets, primarily applied to the "test function area" section of the automated testing system. This device enables automatic, rapid, and accurate docking of the standard combustion rate engine and pressure sensor. It automates the manual assembly of pressure sensors, further enhancing testing capabilities. Simultaneously, it avoids face-to-face contact between operators and the engine containing the ignition charge during assembly, reducing safety risks and ensuring the accuracy and efficiency of combustion rate test data. Currently, this invention has been successfully applied in an automated testing system for standard combustion rate engines in solid rockets, providing strong support for the automated docking of the standard combustion rate engine and pressure sensor.

[0016] This invention relates to the "test functional area" section, and allows for the automatic docking of pressure sensors, transforming manual installation into automatic docking. The device primarily consists of a cylinder, a quick-connect coupling, and a test tray. The basic process involves the cylinder moving the quick-connect coupling forward to dock with the "solid rocket standard combustion engine" on the test tray. A pneumatic device then locks the quick-connect coupling, completing the automatic docking and enabling remote ignition testing. See details below. Figure 3 As shown.

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments obtained. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0018] The workflow of the testing functional area is as follows: After the previous process is completed, the transport gantry starts moving. The gantry moves laterally via a single-axis ground rail. A three-jaw clamp on the gantry picks up the pallet carrying the engine from the receiving platform and onto the testing platform. Then, the pressure sensor and the standard engine automatically dock. The testing personnel complete the ignition test. The transport gantry then places the tested product onto the subsequent roller conveyor. Once the roller conveyor detects that the tested product is complete, it starts the transfer procedure to transport the engine to the next process. Figure 1As shown. This invention relates to components of a pressure sensor and a standard engine automatic docking device, including: a tray assembly, a positioning and locking device, a quick-connect cylinder device, a test bench, a pressure sensor, and a quick-connect connector. Some component configurations and ignition tray parameters are as follows: the quick-connect connector is leak-free under 30MPa pressure; the test bench has an impact resistance greater than 5000N; the positioning and locking device and explosion-proof sensor can perform precise positioning of the test fixture, with a positioning accuracy ≤0.5m; the pressure sensor is an explosion-proof sensor with an explosion-proof rating of not less than ExdllBT4 and a protection rating of not less than IP65; the equipment is grounded, and its anti-static performance meets relevant standards; the equipment should be able to operate stably within an ambient temperature range of -35℃ to 50℃.

[0019] The front cover 11 of the tray assembly is fixed to the tray assembly 1. The engine body 12 and the front cover 11 are rotated and tightened. Then, the rear cover 13, the engine body 12, and the assembly with the front cover 11 are rotated and tightened, completing the engine assembly. Figure 2 As shown. The quick-connect connector 14 is responsible for automatic connection with the pressure sensor 23. The quick-connect cylinder device 21 uses air pressure to push the piston rod, connecting and fixing the explosion-proof sensor 23 to the quick-connect connector 14. The positioning and locking device 22 locks the pressure sensor 23 to prevent loosening. The test bench body 3 is responsible for supporting the tray assembly 1 and the docking device 2. (As shown...) Figure 3 As shown.

[0020] After the test product is positioned on the roller conveyor, the transport gantry places the test product on the product testing device. Then, the explosion-proof pressure sensor 23 is manually tightened to both sides of the quick-connect cylinder device 21. After the engine assembly is completed in the previous process, the automatic gripping robotic arm moves to place the ignition tray with the engine on the fixed test platform 3. After the tray assembly is placed on the test platform 3, the quick-connect cylinder device 21 pushes the cylinder, and at the same time, the quick-connect connector 14 extends, completing the automatic connection between the pressure sensor 23 and the quick-connect connector 14. Then, the positioning and locking device 22 is activated, and after the cylinder component extends, it presses the pressure sensor 23 to complete the locking. The pressure sensor 23 and the quick-connect connector 14 have better airtightness after locking, thus meeting the standard combustion engine testing requirements. After the above actions are completed, the test personnel confirm that the designated workstation has been reached through the LMIS monitoring screen. The test control personnel then issue the ignition command to complete the ignition data acquisition of the standard combustion engine. The test results are transmitted to the test control room in real time. The vacuum cleaner is turned on, the plug is disconnected, the lock is released, and the transport gantry places the tested product into the rear roller conveyor. Once the roller conveyor detects that the tested product has been completed, it begins the transfer action and moves to the next process.

[0021] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations to the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A pressure sensor and a standard engine automatic docking device, characterized in that, include: The tray assembly (1), the docking device (2), and the test platform (3) are included. The tray assembly (1) and docking device (2) are placed on the test bench; The tray assembly (1) is provided with a front cover (11), an engine body (12) and a rear cover (13). The front cover (11) is fixed on the tray, and the engine body (12) and the rear cover (13) are screwed on it in sequence. A quick connector (14) is provided on the side of the front cover (11). The docking device (2) includes a quick-connect cylinder device (21) and a pressure sensor (23). The quick-connect cylinder device (21) uses air pressure to push the piston rod to move and push the pressure sensor (23) to the quick-connect connector (14) for connection and fixation.

2. The pressure sensor and standard engine automatic docking device according to claim 1, characterized in that: The docking device (2) also includes a positioning and locking device (22), which locks the pressure sensor (23) to prevent it from loosening.

3. The pressure sensor and standard engine automatic docking device according to claim 2, characterized in that: The pressure sensor (23) is an explosion-proof sensor with an explosion-proof rating of not less than ExdllBT4 and a protection rating of not less than IP65.

4. The pressure sensor and standard engine automatic docking device according to claim 1, characterized in that: The test platform (3) has an impact resistance greater than 5000N.

5. The automatic docking device for pressure sensor and standard engine according to claim 2, characterized in that: The positioning and locking device (22) is used for precision positioning of the test fixture, with a positioning accuracy of ≤0.5m.

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