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CN-121994440-A - Temperature-controllable gas cylinder accelerated drop test device and test method

CN121994440ACN 121994440 ACN121994440 ACN 121994440ACN-121994440-A

Abstract

The invention relates to the technical field of test and detection of hydrogen storage cylinders, in particular to a temperature-controllable gas cylinder accelerated drop test device and a test method, wherein the gas cylinder accelerated drop test device comprises a lifting table and a gas cylinder telescopic rotary clamping tool, the gas cylinder telescopic rotary clamping tool and the lifting table are respectively used for clamping a test gas cylinder and supporting the gas cylinder to perform vertical acceleration movement, the telescopic rotary clamping tool for the gas cylinder is fixedly arranged below the lifting table, a temperature control cavity annular wall inlet and a temperature control cavity annular wall outlet are formed in the lifting table, and the temperature control cavity annular wall inlet and outlet are used for providing an extending and retracting channel for a plurality of sections of temperature control cavity annular walls. The test device and the test method realize the falling simulation of high energy and high acceleration, integrate the accurate temperature environment simulation function, provide omnibearing and automatic test and safety guarantee, improve the flexibility and the automation degree of the test, have self-verification and feedback optimization capacity, can verify the test accuracy and support closed loop optimization of the test process.

Inventors

  • LI YIFAN
  • TANG PING
  • SHI YAN
  • GUO WEICAN
  • MIAO CUNJIAN
  • XU YI
  • LIU ZHONGQIANG

Assignees

  • 浙江省特种设备科学研究院

Dates

Publication Date
20260508
Application Date
20260317

Claims (10)

  1. 1. The temperature-controllable gas cylinder accelerated drop test device is characterized by comprising a lifting table (5) and a gas cylinder telescopic rotary clamping tool (7), wherein the gas cylinder telescopic rotary clamping tool (7) and the lifting table (5) are respectively used for clamping a test gas cylinder and supporting the gas cylinder to perform vertical accelerated motion; The telescopic rotary clamping tool (7) for the gas cylinder is fixedly arranged below the lifting table (5), a temperature control cavity annular wall inlet and outlet (6) is formed in the lifting table (5), and the temperature control cavity annular wall inlet and outlet (6) is used for providing an extending and retracting channel for the temperature control cavity multi-section annular wall (32).
  2. 2. The temperature-controllable gas cylinder accelerated drop test device according to claim 1, wherein the gas cylinder telescopic rotary clamping tool (7) comprises a main shaft (22), a clamp bracket (21) and a pair of telescopic rotary clamping arms, the main shaft (22) is connected with the lifting table (5) and the clamp bracket (21), and the telescopic rotary clamping arms are arranged on two sides of the bottom of the clamp bracket (21).
  3. 3. The temperature-controllable gas cylinder accelerated drop test device according to claim 2, wherein the telescopic rotary clamping arm comprises a longitudinal shaft sleeve (27), a longitudinal telescopic shaft (26), a transverse shaft sleeve (25), a transverse telescopic rotary shaft (24) and a clamping plate (23); The vertical shaft sleeve (27) is fixed on the clamp bracket (21), the vertical telescopic shaft (26) is telescopically arranged in the vertical shaft sleeve (27), the horizontal shaft sleeve (25) is fixed at the end part of the vertical telescopic shaft (26), the horizontal telescopic rotating shaft (24) is rotatably arranged in the horizontal shaft sleeve (25), and the clamping plate (23) is fixed at the end part of the horizontal telescopic rotating shaft (24).
  4. 4. The temperature-controllable gas cylinder accelerated drop test device according to claim 1, further comprising a vertical guide rail (3), a first linear motor (4) and a second linear motor (8); The vertical guide rail (3) is arranged on two sides of the lifting table (5), and the first linear motor (4) and the second linear motor (8) are arranged on the top of the vertical guide rail (3) and used for driving the lifting table (5) to move along the vertical guide rail (3).
  5. 5. The temperature-controllable gas cylinder accelerated drop test device according to claim 4, wherein the vertical guide rail (3) is provided with a first wire rail retainer (10) and a second wire rail retainer (16) for preventing the gas cylinder from being dropped by a telescopic rotary clamping tool (7) when power is off; the first wire track retainer (10) is provided with a wire speed sensor (11) for measuring the initial speed of the gas cylinder when the gas cylinder is released.
  6. 6. The temperature-controllable gas cylinder accelerated drop test device according to claim 1, wherein the temperature-controllable cavity multi-section annular wall (32) is connected with a temperature-controllable cavity left baffle (30) and a temperature-controllable cavity right baffle (33) through a buckle (28) to form a closed temperature-controllable cavity; and a safety valve (29) is arranged on the left baffle (30) of the temperature control cavity.
  7. 7. The temperature-controllable gas cylinder accelerated drop test device according to claim 1, further comprising a frame (9), a metal bottom plate (19), a first metal baffle (12), a second metal baffle (13), a third metal baffle (18) and a metal push plate (17); the metal bottom plate (19) is arranged at the bottom of the frame (9) and is used for receiving the falling gas cylinder; The first metal baffle (12), the second metal baffle (13) and the third metal baffle (18) form a concave structure and are positioned below the telescopic rotary clamping tool (7) of the gas cylinder; The metal push plate (17) is slidably disposed between the first metal baffle (12) and the third metal baffle (18).
  8. 8. The temperature-controllable gas cylinder accelerated drop test device according to claim 7, wherein a transparent plastic window (14) is arranged on the second metal baffle plate (13), and a high-speed camera (15) is arranged behind the transparent plastic window.
  9. 9. A temperature-controllable gas cylinder accelerated drop test method using the gas cylinder accelerated drop test device according to any one of claims 1 to 8, characterized by comprising the steps of: calculating the required acceleration according to the simulated falling height; clamping and controlling the temperature of the gas cylinder to a set temperature; moving the lifting table (5) to the top, and adjusting the angle of the gas cylinder; starting to accelerate falling, and releasing the gas cylinder at a set height; Measuring the initial speed and the impact energy of the gas cylinder and recording an impact picture; pushing the cylinder out to the placement area.
  10. 10. The method of claim 9, further comprising verifying the simulated effect of the device by comparing the simulated drop height to the calculated drop height.

Description

Temperature-controllable gas cylinder accelerated drop test device and test method Technical Field The invention relates to the technical field of test and detection of hydrogen storage cylinders, in particular to a temperature-controllable gas cylinder accelerated drop test device and a test method. Background Along with the wide application of the hydrogen unmanned aerial vehicle in the fields of low-altitude logistics, inspection and the like, a high-pressure hydrogen storage bottle serving as a power core of the hydrogen unmanned aerial vehicle faces serious high-altitude falling safety risks. The unmanned aerial vehicle operation airspace (usually within 1000 meters) is far higher than the test standard of the traditional vehicle gas cylinder, so that the impact kinetic energy is greatly increased when the unmanned aerial vehicle falls. Meanwhile, the carbon fiber of the gas cylinder core is wound on the composite material layer, the mechanical properties (such as impact resistance) of the composite material layer are obviously affected by temperature, and the phenomena of high-temperature softening, low-temperature embrittlement and the like exist. Therefore, the real working condition that the gas cylinder falls from hundred meters under different terminal temperature conditions is accurately simulated in a laboratory environment, and the method is a key technical requirement for evaluating the safety and reliability of the gas cylinder. At present, the existing gas cylinder drop test device mainly aims at free drop tests at room temperature and low height, and can not meet the simulation requirements of high acceleration and high energy impact. For example, some existing devices adopt a small motor and a screw rod for transmission, have the defects of large friction, low efficiency and large inertia, limit the upper limit of acceleration which can be achieved, and are difficult to simulate huge potential energy falling from high altitude in a test bed with limited height. In addition, the prior art also generally lacks integrated high-low temperature environment simulation cavity, can't carry out accurate temperature pretreatment to the gas cylinder before falling. Therefore, a comprehensive test device and method integrating functions of temperature control, high acceleration driving, multi-angle release, accurate energy measurement and the like are needed in the art, so as to fill the technical blank of high-low temperature and high energy drop test of a high-pressure gas cylinder for an unmanned aerial vehicle. Disclosure of Invention The invention mainly aims to overcome the defects in the prior art and provides a temperature-controllable gas cylinder accelerated drop test device and a test method. The invention aims to realize the technical scheme that the temperature-controllable gas cylinder accelerated drop test device comprises a lifting table and a gas cylinder telescopic rotary clamping tool, wherein the gas cylinder telescopic rotary clamping tool and the lifting table are respectively used for clamping a test gas cylinder and supporting the gas cylinder to perform vertical acceleration movement; The telescopic rotary clamping tool for the gas cylinder is fixedly arranged below the lifting table, a temperature control cavity annular wall inlet and outlet is formed in the lifting table, and the temperature control cavity annular wall inlet and outlet is used for providing an extending and retracting channel for a plurality of sections of annular walls of the temperature control cavity. Preferably, the scalable rotatory centre gripping frock of gas cylinder includes main shaft, anchor clamps support and a pair of scalable rotatory centre gripping arm, elevating platform and anchor clamps support are connected to the main shaft, scalable rotatory centre gripping arm sets up in anchor clamps support bottom both sides. Preferably, the telescopic rotary clamping arm comprises a longitudinal shaft sleeve, a longitudinal telescopic shaft, a transverse shaft sleeve, a transverse telescopic rotary shaft and a clamping plate; The vertical axle sleeve is fixed on the anchor clamps support, vertical telescopic shaft telescopically sets up in vertical axle sleeve, horizontal axle sleeve is fixed in the tip of vertical telescopic shaft, horizontal telescopic rotating shaft rotatably sets up in horizontal axle sleeve, the grip block is fixed in the tip of horizontal telescopic rotating shaft. Preferably, the motor further comprises a vertical guide rail, a first linear motor and a second linear motor; the vertical guide rail is arranged on two sides of the lifting platform, and the first linear motor and the second linear motor are arranged on the top of the vertical guide rail and used for driving the lifting platform to move along the vertical guide rail. Preferably, the vertical guide rail is provided with a first wire rail retainer and a second wire rail retainer, and the first wire rail retainer an