Composite material gas cylinder dropping device and method

Abstract

The present invention discloses a composite gas cylinder drop device and method, which relates to the technical field of composite gas cylinder detection, including a frame, a mobile platform and a multi-angle clamp, wherein the mobile platform is arranged on the frame, and a lifting mechanism is arranged between the mobile platform and the frame, and the lifting mechanism is used to change the height of the mobile platform from the bottom of the frame; the multi-angle clamp is arranged on the mobile platform, and the multi-angle clamp is used to clamp the composite gas cylinder to be tested; a signal receiver is arranged on the mobile platform, and a sensor is arranged on the frame, and the signal receiver is used to receive the signal sent by the sensor, an energy receiver is arranged at the bottom of the frame, and a high-speed camera is arranged on one side of the frame, and the signal receiver, the sensor and the energy receiver are all connected to the control console signal. The composite gas cylinder drop device and method in the present invention can control the initial velocity of the gas cylinder drop, so that the energy of the gas cylinder falling to the ground meets the standard requirements, and the device can be applied to the multi-angle drop test of composite hydrogen storage gas cylinders of any size.

Description

Technical Field

[0001] The invention relates to the technical field of composite material gas cylinder detection, and in particular to a composite material gas cylinder falling device and method. Background Art

[0002] As traditional energy sources such as oil, coal and natural gas are becoming increasingly depleted, hydrogen energy is gradually becoming a new way for sustainable development of resources and environment in countries around the world. Storing hydrogen energy is one of the most important technical difficulties in the hydrogen energy system. High-pressure hydrogen storage is the most commonly used method for storing hydrogen energy because of its simple structure and high efficiency.

[0003] Composite materials are gradually replacing traditional all-metal gas cylinders due to their high specific strength, high specific modulus and corrosion resistance, and are widely used in aviation, aerospace, shipbuilding and automotive industries. Internationally, the United States and Europe have successively formulated a series of standards for composite pressure vessels. The current national standard for hydrogen storage cylinders is the "Automotive Compressed Hydrogen Aluminum Liner Carbon Fiber Fully Wrapped Gas Cylinder" (hereinafter referred to as the "Standard").

[0004] The test method in the standard requires that hydrogen storage cylinders be dropped horizontally, vertically, and at an angle of 45° to the vertical. When dropped horizontally, the lower surface of the cylinder is 1.8 meters away from the drop surface; when dropped vertically, the drop height should give the cylinder a potential energy greater than or equal to 488 joules, while ensuring that the lower end of the cylinder is less than or equal to 1.8 meters from the drop surface; when dropped at 45°, if the lower end of the cylinder is less than 0.6 meters from the drop surface, the drop angle should be changed to ensure a minimum height of 0.6 meters, while ensuring that the center of gravity of the cylinder is 1.8 meters from the drop surface.

[0005] For hydrogen storage cylinders of different sizes, the diameters of the cylinder bodies are different. Under the condition of falling height restrictions, the energy of landing may not meet the requirements of the standard. Therefore, the prior art does not have a drop test device suitable for hydrogen storage cylinders of any size. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a composite material gas cylinder dropping device and method, which can meet the drop test requirements of horizontal drop, vertical drop and 45° drop specified in the standard.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a composite material gas cylinder dropping device, comprising a frame, a mobile platform and a multi-angle clamp, wherein the mobile platform is arranged on the frame, and a lifting mechanism is arranged between the mobile platform and the frame, and the lifting mechanism is used to change the height of the mobile platform from the bottom of the frame; the multi-angle clamp is arranged on the mobile platform, and the multi-angle clamp is used to clamp the composite material gas cylinder to be tested; a signal receiver is arranged on the mobile platform, a sensor is arranged on the frame, and the signal receiver is used to receive a signal sent by the sensor, an energy receiver is arranged at the bottom of the frame, a high-speed camera is arranged on one side of the frame, and the signal receiver, the sensor and the energy receiver are all connected with a control console signal.

[0009] Optionally, one of the multi-angle clamps is respectively provided on both sides of the mobile platform.

[0010] Optionally, a first through hole and a second through hole are provided on both sides of the movable platform, and the first through hole and the second through hole are perpendicular to and connected to each other; one end of the multi-angle clamp is inserted into the first through hole, and the second through hole is used to limit the rotation of the multi-angle clamp.

[0011] Optionally, the multi-angle clamp includes a clamping end, a piston rod and an angle adjustment rod; one end of the angle adjustment rod is provided with a plurality of angle adjustment holes along the circumferential direction; the other end of the angle adjustment rod is connected to the fixed end of the piston rod, the movable end of the piston rod is connected to one end of the clamping end, and the other end of the clamping end is used to contact the composite gas cylinder to be tested to clamp the composite gas cylinder to be tested; one end of the angle adjustment rod is inserted into the first through hole, and a bolt or a pin is inserted into the second through hole and an angle adjustment hole corresponding to the second through hole to limit the angle of the clamping end.

[0012] Optionally, three angle adjustment holes are provided at one end of the angle adjustment rod. In the circumferential direction of the angle adjustment rod, the angle between the first angle adjustment hole and the second angle adjustment hole is 45 degrees, and the angle between the first angle adjustment hole and the third angle adjustment hole is 90 degrees.

[0013] Optionally, the lifting mechanism includes a large motor, a small motor, a column and a screw rod; the two ends of the mobile platform are respectively connected to the top of one of the columns, the bottom of the column is connected to the frame, and the large motor is transmission-connected to the column; the two ends of the screw rod are rotatably connected to the frame, and the small motor is transmission-connected to the screw rod; the nut on the screw rod is rotationally connected to the mobile platform.

[0014] Optionally, four screw rods are arranged around the mobile platform, and the four screw rods are all connected to the small motor in a transmission manner.

[0015] Optionally, the small motor is arranged on the top of the frame, a first bevel gear is arranged on the output shaft of the small motor, a second bevel gear is arranged on the top of each screw rod, and a third bevel gear is arranged at both ends of the transmission shaft respectively, and the first bevel gear and the second bevel gear are meshed with the third bevel gear relative to each other.

[0016] Optionally, a baffle is provided on both sides of the energy receiver inside the frame.

[0017] The present invention also discloses a method for making a composite material gas cylinder drop device, comprising the following steps:

[0018] (1) Before the test, the control console controls the rotation of the large motor and the small motor to lower the mobile platform. The multi-angle clamp is installed on the mobile platform at the angle set in the experiment. The control console is operated to clamp the gas cylinder with the multi-angle clamp and then rise to the height set in the experiment.

[0019] (2) Set the descending speed parameters on the console, and the mobile platform will perform accelerated descending motion;

[0020] (3) When the mobile platform passes the sensor position, the signal receiver receives the signal, and the column and the screw stop moving, the mobile platform also stops moving, and the multi-angle clamp no longer clamps the gas cylinder. At this time, the gas cylinder, which has obtained a certain initial velocity, falls to the ground in free fall;

[0021] (4) The gas cylinder falls to the ground and the scene of landing is captured by a high-speed camera. The energy of the gas cylinder falling to the ground is captured by an energy receiver and displayed on the console to determine whether its energy meets the standard requirements.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] The composite gas cylinder dropping device and method of the present invention can control the initial velocity of the gas cylinder drop so that the energy of the gas cylinder falling to the ground meets the standard requirements. The device can be applied to multi-angle drop tests of composite hydrogen storage gas cylinders of any size. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural stereogram of the composite material gas cylinder drop test device of the present invention;

[0026] Figure 2 yes Figure 1 Enlarged view of the multi-angle fixture at center C;

[0027] Figure 3 is a front view of the composite material gas cylinder drop test device of the present invention;

[0028] Figure 4 yes Figure 3 Section view at AA.

[0029] Explanation of the accompanying drawings: 1. small motor; 2. bevel gear; 3. frame; 4. signal receiver; 5. sensor; 6. control console; 7. baffle; 8. energy receiver; 9. high-speed camera; 10. screw; 11. mobile platform; 12. large motor; 13. multi-angle clamp; 1301. clamping end; 1302. piston rod; 1303. angle adjustment hole; 1304. angle adjustment rod; 1305. bolt; 14. hydrogen storage cylinder; 15. column. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] like Figures 1 to 4 As shown, this embodiment provides a composite gas cylinder dropping device and method, including a frame 3, a mobile platform 11 and a multi-angle clamp 13, the mobile platform 11 is arranged on the frame 3, and a lifting mechanism is arranged between the mobile platform 11 and the frame 3, the lifting mechanism is used to change the height of the mobile platform 11 from the bottom of the frame 3; the multi-angle clamp 13 is arranged on the mobile platform 11, and the multi-angle clamp 13 is used to clamp the composite gas cylinder to be tested; a signal receiver 4 is arranged on the mobile platform 11, a sensor 5 is arranged on the frame 3, the signal receiver 4 is used to receive the signal sent by the sensor 5, an energy receiver is arranged at the bottom of the frame 3, a high-speed camera 9 is arranged on one side of the frame 3, and the signal receiver 4, the sensor 5 and the energy receiver are all connected to the control console 6 signal.

[0033] In this specific embodiment, a multi-angle clamp 13 is provided on both sides of the mobile platform 11. A first through hole and a second through hole are provided on both sides of the mobile platform 11, and the first through hole and the second through hole are perpendicular to and connected to each other; one end of the multi-angle clamp 13 is inserted into the first through hole, and the second through hole is used to limit the rotation of the multi-angle clamp 13.

[0034] More specifically, the multi-angle clamp 13 includes a clamping end 1301, a piston rod 1302 and an angle adjustment rod 1304; one end of the angle adjustment rod 1304 is provided with three angle adjustment holes 1303, and in the circumferential direction of the angle adjustment rod 1304, the angle between the first angle adjustment hole 1303 and the second angle adjustment hole 1303 is 45 degrees, and the angle between the first angle adjustment hole 1303 and the third angle adjustment hole 1303 is 90 degrees. The other end of the angle adjustment rod 1304 is connected to the fixed end of the piston rod 1302, and the movable end of the piston rod 1302 is connected to one end of the clamping end 1301, and the other end of the clamping end 1301 is used to contact with the composite gas cylinder to be tested to clamp the composite gas cylinder to be tested; one end of the angle adjustment rod 1304 is inserted into the first through hole, and the angle of the clamping end 1301 is limited by inserting a bolt 1305 or a pin into the second through hole and an angle adjustment hole 1303 corresponding to the second through hole. When the clamping end 1301 is kept in a vertical state, the top of one end of the angle adjustment rod 1304 has a first angle adjustment hole 1303. When the clamping end 1301 is kept in a 45-degree inclined state, the top of one end of the angle adjustment rod 1304 has a second angle adjustment hole 1303. When the clamping end 1301 is kept in a horizontal state, the top of one end of the angle adjustment rod 1304 has a third angle adjustment hole 1303.

[0035] The lifting mechanism includes a large motor 12, a small motor 1, a column 15 and a screw rod 10; the two ends of the mobile platform 11 are respectively connected to the top of a column 15, the bottom of the column 15 is connected to the frame 3, and the large motor 12 is connected to the column 15 in a transmission connection; the two ends of the screw rod 10 are rotatably connected to the frame 3, and the small motor 1 is connected to the screw rod 10 in a transmission connection; the nut on the screw rod 10 is connected to the mobile platform 11 in a rotational connection. Further, four screw rods 10 are arranged around the mobile platform 11, and the four screw rods 10 are connected to the small motor 1 in a transmission connection. The small motor 1 is arranged on the top of the frame 3, and a first bevel gear 2 is arranged on the output shaft of the small motor 1, and a second bevel gear 2 is arranged on the top of each screw rod 10, and a third bevel gear 2 is arranged at both ends of the transmission shaft, and the first bevel gear 2 and the second bevel gear 2 are meshed with the third bevel gear 2 relative to each other. More specifically, the column 15 is a hydraulic column, and the hydraulic system is used to realize telescopic lifting to achieve the height adjustment of the mobile platform 11.

[0036] A baffle 7 is provided on both sides of the energy receiver inside the frame 3 to prevent the gas cylinder from damaging other devices.

[0037] The energy receiver 8 displays the energy data of the gas cylinder falling on the console 6, so as to record the energy of each gas cylinder falling to the ground; the high-speed camera 9 is used to capture the image of the gas cylinder falling to the ground.

[0038] Embodiment 2:

[0039] This embodiment discloses a method for a composite material gas cylinder drop device based on the first embodiment, comprising the following steps:

[0040] (1) Before the test, the control console 6 controls the rotation of the large motor 12 and the small motor 1 to lower the mobile platform 11, and the multi-angle clamp 13 is installed on the mobile platform 11 at the angle set in the experiment. The control console 6 is operated to clamp the multi-angle clamp 13 to clamp the gas cylinder, and then rise to the height set in the experiment;

[0041] (2) Setting the descending speed parameters on the control console 6, and the mobile platform 11 performs an accelerated descending motion;

[0042] (3) When the mobile platform 11 passes the position of the sensor 5, the signal receiver 4 receives the signal, and the column 15 and the screw rod 10 stop moving, and the mobile platform 11 also stops moving. At the same time, the multi-angle clamp 13 no longer clamps the gas cylinder. At this time, the gas cylinder, which has obtained a certain initial velocity, falls to the ground in a free fall motion;

[0043] (4) The gas cylinder falls to the ground, and the scene of landing is captured by the high-speed camera 9, and the energy of the gas cylinder falling to the ground is obtained by the energy receiver 8 and displayed on the console 6 to determine whether its energy meets the standard requirements.

[0044] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0045] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A composite material gas cylinder drop device, characterized in that: It comprises a frame, a mobile platform and a multi-angle fixture, wherein the mobile platform is arranged on the frame, and a lifting mechanism is arranged between the mobile platform and the frame, and the lifting mechanism is used to change the height of the mobile platform from the bottom of the frame; the multi-angle fixture is arranged on the mobile platform, and the multi-angle fixture is used to clamp the composite material gas cylinder to be tested; a signal receiver is arranged on the mobile platform, a sensor is arranged on the frame, and the signal receiver is used to receive the signal sent by the sensor, an energy receiver is arranged at the bottom of the frame, and a high-speed camera is arranged on one side of the frame, and the signal receiver, the sensor and the energy receiver are all connected to the control console signal; The multi-angle clamp is respectively arranged on both sides of the mobile platform; A first through hole and a second through hole are provided on both sides of the mobile platform, and the first through hole and the second through hole are perpendicular to and connected to each other; one end of the multi-angle clamp is inserted into the first through hole, and the second through hole is used to limit the rotation of the multi-angle clamp; The multi-angle clamp comprises a clamping end, a piston rod and an angle adjustment rod; one end of the angle adjustment rod is provided with a plurality of angle adjustment holes along the circumferential direction; the other end of the angle adjustment rod is connected to the fixed end of the piston rod, the movable end of the piston rod is connected to one end of the clamping end, and the other end of the clamping end is used to contact with the composite gas cylinder to be tested so as to clamp the composite gas cylinder to be tested; one end of the angle adjustment rod is inserted into the first through hole, and a bolt or a pin is inserted into the second through hole and one of the angle adjustment holes corresponding to the second through hole to limit the angle of the clamping end; The test steps are as follows: (1) Before the test, the console controls the rotation of the large motor and the small motor to lower the mobile platform. The multi-angle clamp is installed on the mobile platform at the angle set in the experiment. The console is operated to clamp the gas cylinder with the multi-angle clamp and then rise to the height set in the experiment. (2) Set the descent speed parameters on the console, and the mobile platform will perform accelerated descent motion; (3) When the mobile platform passes the sensor position, the signal receiver receives the signal, and the column and the screw stop moving, the mobile platform also stops moving, and the multi-angle clamp no longer clamps the gas cylinder. At this time, the gas cylinder, which has obtained a certain initial velocity, falls to the ground in free fall; (4) The gas cylinder falls to the ground and the scene of landing is captured by a high-speed camera. The energy of the gas cylinder falling to the ground is captured by an energy receiver and displayed on the console to determine whether its energy meets the standard requirements.

2. The composite gas cylinder drop device according to claim 1, characterized in that: Three angle adjustment holes are provided at one end of the angle adjustment rod. In the circumferential direction of the angle adjustment rod, the angle between the first angle adjustment hole and the second angle adjustment hole is 45 degrees, and the angle between the first angle adjustment hole and the third angle adjustment hole is 90 degrees.

3. The composite gas cylinder dropping device according to claim 1, characterized in that: The lifting mechanism includes a large motor, a small motor, a column and a screw rod; the two ends of the mobile platform are respectively connected to the top of one of the columns, the bottom of the column is connected to the frame, and the large motor is transmission-connected to the column; the two ends of the screw rod are rotatably connected to the frame, and the small motor is transmission-connected to the screw rod; the nut on the screw rod is rotationally connected to the mobile platform.

4. The composite gas cylinder drop device according to claim 3, characterized in that: Four screw rods are arranged around the mobile platform, and all of the four screw rods are transmission-connected with the small motor.

5. The composite gas cylinder drop device according to claim 4, characterized in that: The small motor is arranged on the top of the frame, a first bevel gear is arranged on the output shaft of the small motor, a second bevel gear is arranged on the top of each screw rod, a third bevel gear is arranged at both ends of the transmission shaft, and the first bevel gear and the second bevel gear are meshed with the corresponding third bevel gear.

6. The composite gas cylinder drop device according to claim 1, characterized in that: A baffle is respectively arranged on both sides of the energy receiver inside the frame.

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