High-pressure hydrogen cylinder extreme working condition fatigue test device

Abstract

The invention discloses a high-pressure hydrogen cylinder extreme working condition fatigue test device, and relates to the technical field of hydrogen cylinder test.The high-pressure hydrogen cylinder extreme working condition fatigue test device comprises a detection box body, a gas communicating vessel, a supercharging device and a buffer tank, a temperature adjusting layer is arranged on the inner wall of the detection box body, a temperature adjusting assembly is arranged in the temperature adjusting layer, and a vibration assembly is arranged in the detection box body; the hydrogen cylinder is fixedly installed on the vibration assembly, the supercharging device and the buffer tank are both located on the outer side of the detection box body, the gas inlet end of the supercharging device communicates with a hydrogen source, the gas outlet end of the supercharging device is connected with the gas inlet end of the hydrogen cylinder through a gas communicating vessel, and a flow sensor is arranged on a connecting pipeline of the supercharging device and the gas communicating vessel. The gas outlet end of the hydrogen cylinder is connected with the buffer tank through a gas communicating vessel, and a first temperature sensor and a pressure sensor are arranged on the hydrogen cylinder and used for detecting the temperature and pressure in the hydrogen cylinder. The vibration assembly is used for simulating automobile vibration road conditions, the temperature adjusting assembly is used for adjusting and controlling the temperature, the actual environment can be truly simulated, and the storage performance of the hydrogen cylinder is effectively detected.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen cylinder testing, and in particular to a high-pressure hydrogen cylinder extreme working condition fatigue test device. Background Art

[0002] Energy is the cornerstone of human existence and the driving force of development. With the development of social economy, facing the challenge of fossil fuel depletion, countries around the world have paid attention to the development of new energy, among which hydrogen energy is favored for its many advantages such as cleanliness, pollution-free and high efficiency.

[0003] At present, there are two mainstream storage methods for hydrogen: high-pressure gas storage and low-temperature liquid storage. Others include adsorption and solid-state storage. For hydrogen storage bottles for fuel cell vehicles, high-pressure gas storage is still the most important storage method. In the summer, high-pressure hydrogen storage bottles are often exposed to the sun, causing the ambient temperature to rise rapidly, and the car will vibrate when driving on different road conditions, causing the high-pressure hydrogen storage bottles to vibrate together. Therefore, it requires better long-term storage performance under extreme ambient temperature conditions. The existing experimental device lacks a temperature control system and a vibration system, and cannot truly simulate the actual environment.

[0004] Therefore, there is an urgent need for a high-pressure hydrogen cylinder extreme working conditions fatigue test device. Summary of the invention

[0005] In view of this, the present invention provides a high-pressure hydrogen cylinder extreme working condition fatigue test device to solve the problems raised in the above background technology, and specifically discloses the following contents:

[0006] A high-pressure hydrogen cylinder extreme working condition fatigue test device comprises a detection box, a gas communicator, a booster device and a buffer tank, a temperature regulating layer is provided on the inner wall of the detection box, a temperature regulating component is provided in the temperature regulating layer, a hydrogen detection sensor is installed on the top of the detection box, a vibration component is provided in the detection box, the hydrogen cylinder is fixedly installed on the vibration component, one end of the gas communicator is located inside the detection box, and the other end penetrates the detection box and extends outward, the booster device and the buffer tank are both located outside the detection box, the air inlet end of the booster device is connected to a hydrogen source, the air outlet end of the booster device is connected to the air inlet end of the hydrogen cylinder through the gas communicator, a flow sensor is provided on the connecting pipeline between the booster device and the gas communicator, the air outlet end of the hydrogen cylinder is connected to the buffer tank through the gas communicator, and the hydrogen cylinder is provided with a first temperature sensor and a pressure sensor for detecting the temperature and pressure in the hydrogen cylinder.

[0007] Furthermore, the gas manifold has an inlet adapter and an outlet adapter at its inlet end, and an inlet head and an outlet head at its outlet end. The inlet adapter is connected to the inlet head through an air path, and the outlet adapter is connected to the outlet head through an air path.

[0008] The air inlet adapter is rotatably connected to an air inlet pipe, one end of the air inlet pipe away from the air inlet adapter is connected to the air inlet end of the hydrogen cylinder, and the air outlet adapter is rotatably connected to an air outlet pipe, one end of the air outlet pipe away from the air outlet adapter is connected to the air outlet end of the hydrogen cylinder;

[0009] The flow sensor is connected to the air inlet head, and the air outlet head is connected to the buffer tank.

[0010] Furthermore, the vibration assembly includes a mounting platform and a driving unit, spring units are symmetrically provided on the front and rear sides of the bottom of the mounting platform, one end of the spring unit away from the mounting platform is fixedly connected to the bottom wall of the detection box, the spring unit includes a plurality of vibration springs, a clamping unit is provided on the top of the mounting platform, the clamping unit is used to clamp and fix the hydrogen cylinder, and the driving unit is rotatably connected to the detection box to drive the mounting platform to vibrate.

[0011] Furthermore, the clamping unit includes a fixed clamp seat and a movable clamp seat, the fixed clamp seat is fixedly mounted on the mounting platform via a connecting block, one end of the movable clamp seat is rotatably connected to one end of the fixed clamp seat, and the other end of the movable clamp seat is connected to the other end of the fixed clamp seat via bolts, and the fixed clamp seat and the movable clamp seat are used to clamp and fix the hydrogen cylinder.

[0012] Furthermore, clamping pads are provided on the inner sides of the fixed clamp seat and the movable clamp seat.

[0013] Furthermore, the driving unit includes a driving shaft rotatably connected to the detection box body, and a plurality of cams are fixedly sleeved on the driving shaft. The cams intermittently contact the mounting platform during rotation to drive the mounting platform to vibrate, and the driving shaft is driven by an external motor.

[0014] Furthermore, an explosion-proof layer is provided on the inner wall of the detection box, and the explosion-proof layer is located outside the temperature adjustment layer.

[0015] Furthermore, the buffer tank is provided with a recovery port, and the recovery port is connected to the air inlet end of the boosting device.

[0016] Furthermore, a camera is provided on the top wall of the detection box for observing the outside of the hydrogen cylinder.

[0017] Furthermore, a rotating shaft is provided at the center of the inner top wall of the detection box, a stirring fan is fixedly connected to the bottom end of the rotating shaft, and the rotating shaft is driven by an external motor. A second temperature sensor is also provided on the hydrogen cylinder for detecting the temperature inside the detection box.

[0018] The beneficial effects of the present invention are:

[0019] The vibration component of the present invention is used to simulate the vibration road condition of the car, and the temperature control component is used to adjust and control the temperature, which can truly simulate the actual environment and effectively detect the storage performance of the hydrogen cylinder;

[0020] In the present invention, an explosion-proof layer is also provided on the inner wall of the detection box to improve the safety of the experimental process;

[0021] In the present invention, a stirring fan is provided at the center of the inner top wall of the detection box to stir the gas in the detection box to make the gas evenly distributed and improve the temperature regulation efficiency; the second temperature sensor is arranged on the hydrogen cylinder to accurately measure the ambient temperature of the hydrogen cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a high-pressure hydrogen cylinder extreme working condition fatigue test device of the present invention.

[0024] Figure 2 for Figure 1 Cross-section view of AA.

[0025] Figure 3 It is a schematic diagram of the structure of the gas communication vessel in the present invention.

[0026] Among them, in the figure:

[0027] 1-detection box; 11-explosion-proof layer; 12-temperature adjustment layer; 13-hydrogen detection sensor; 14-camera; 2-boosting device; 3-flow sensor; 4-buffer tank; 5-rotating shaft; 51-stirring fan; 6-gas connecting vessel; 61-air inlet adapter; 62-air outlet adapter; 7-hydrogen cylinder; 71-first temperature sensor; 72-pressure sensor; 73-second temperature sensor; 8-installation platform; 81-vibration spring; 82-connecting block; 83-fixed clamp seat; 84-movable clamp seat; 9-driving shaft; 91-cam. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention are described clearly and completely below. 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.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or components is not necessarily limited to those steps or components that are clearly listed, but may include other steps or components that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0032] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] See attached Figure 1-3The present invention discloses a high-pressure hydrogen cylinder extreme working condition fatigue test device, comprising a detection box 1, a gas communicator 6, a booster 2 and a buffer tank 4, a temperature regulating layer 12 is provided on the inner wall of the detection box 1, a temperature regulating component is provided in the temperature regulating layer 12, a hydrogen detection sensor 13 is installed on the top of the detection box 1, a vibration component is provided in the detection box 1, a hydrogen cylinder 7 is fixedly installed on the vibration component, one end of the gas communicator 6 is located inside the detection box 1, and the other end penetrates the detection box 1 and extends outward, the booster 2 and the buffer tank 4 are both located outside the detection box 1, the air inlet end of the booster 2 is connected to the hydrogen source, the air outlet end of the booster 2 is connected to the air inlet end of the hydrogen cylinder 7 through the gas communicator 6, a flow sensor 3 is provided on the connecting pipeline between the booster 2 and the gas communicator 6, the air outlet end of the hydrogen cylinder 7 is connected to the buffer tank 4 through the gas communicator 6, and a first temperature sensor 71 and a pressure sensor 72 are provided on the hydrogen cylinder 7 for detecting the temperature and pressure in the hydrogen cylinder 7.

[0034] In this embodiment, the hydrogen source is at a constant pressure, and the hydrogen flow is monitored by the flow sensor 3 to know the single hydrogen compression amount. When the hydrogen bottle 7 yields or the filling amount changes greatly, an alarm is issued.

[0035] In this embodiment, the vibration component is used to simulate the vibration of the car road conditions, and the temperature control component is used to adjust and control the temperature. It can truly simulate the actual environment and effectively detect the storage performance of the hydrogen cylinder 7. The hydrogen detection sensor 13 of the detection box 1 is used to detect whether the hydrogen cylinder 7 is leaking. The temperature control component can be an electric heating and electric refrigeration element in the prior art, which is convenient for realizing high temperature environment and low temperature environment. Fatigue experiments are performed under different temperature conditions to verify the ultimate fatigue of the inner liner (material or wall thickness), winding layer (carbon fiber or glass fiber), winding layer thickness, winding method and sealing ring of the hydrogen cylinder 7 at different temperatures.

[0036] The gas manifold 6 has an inlet adapter 61 and an outlet adapter 62 at its inlet end, and an inlet head and an outlet head at its outlet end. The inlet adapter 61 is connected to the inlet head through an air path, and the outlet adapter 62 is connected to the outlet head through an air path.

[0037] The air inlet adapter 61 is rotatably connected to an air inlet pipe, and one end of the air inlet pipe away from the air inlet adapter 61 is connected to the air inlet end of the hydrogen bottle 7. The air outlet adapter 62 is rotatably connected to an air outlet pipe, and one end of the air outlet pipe away from the air outlet adapter 62 is connected to the air outlet end of the hydrogen bottle 7.

[0038] The flow sensor 3 is connected to the air inlet head, and the air outlet head is connected to the buffer tank 4.

[0039] The vibration assembly includes a mounting platform 8 and a driving unit. Spring units are symmetrically arranged on the front and rear sides of the bottom of the mounting platform 8. The end of the spring unit away from the mounting platform 8 is fixedly connected to the bottom wall of the detection box 1. The spring unit includes multiple vibration springs 81. A clamping unit is arranged on the top of the mounting platform 8. The clamping unit is used to clamp and fix the hydrogen cylinder 7. The driving unit is rotatably connected to the detection box 1 and is used to drive the mounting platform 8 to vibrate.

[0040] The clamping unit includes a fixed clamp seat 83 and a movable clamp seat 84. The fixed clamp seat 83 is fixedly mounted on the mounting platform 8 through a connecting block 82. One end of the movable clamp seat 84 is rotatably connected to one end of the fixed clamp seat 83. The other end of the movable clamp seat 84 is connected to the other end of the fixed clamp seat 83 through bolts. The fixed clamp seat 83 and the movable clamp seat 84 are used to clamp and fix the hydrogen cylinder 7.

[0041] Clamping pads are provided inside the fixed clamp seat 83 and the movable clamp seat 84 to prevent damage to the hydrogen cylinder 7 during the fixing and clamping process.

[0042] The driving unit includes a driving shaft 9 rotatably connected to the detection box 1. A plurality of cams 91 are fixedly sleeved on the driving shaft 9. The cams 91 intermittently contact the mounting platform 8 during rotation to drive the mounting platform 8 to vibrate. The driving shaft 9 is driven by an external motor.

[0043] In this embodiment, the number of drive shafts 9 can be 1 or 2. When the number is 1, the drive shaft 9 is only arranged above one side of the mounting platform 8. When the number is 2, the drive shafts 9 are symmetrically arranged above the front and rear sides of the mounting platform 8. The vibration effect can be adjusted by adjusting the external motor power or the size of the cam 91; the drive shaft 9 rotates, driving the cam 91 to rotate. During the rotation of the cam 91, the mounting platform 8 is intermittently contacted to drive the mounting platform 8 to vibrate, simulating the vibration of the car on the road, driving the mounting platform 8 to vibrate, and driving the hydrogen bottle 7 to vibrate. The air inlet pipe at the air inlet end of the hydrogen bottle 7 is rotatably connected to the air inlet adapter 61, and the air outlet pipe at the air outlet end of the hydrogen bottle 7 is rotatably connected to the air outlet adapter 62 to avoid damage to the gas connection interface or the air pipe during the vibration of the hydrogen bottle 7.

[0044] An explosion-proof layer 11 is also provided on the inner wall of the detection box 1. The explosion-proof layer 11 is located outside the temperature adjustment layer 12 to improve the safety of the experimental process.

[0045] The buffer tank 4 is provided with a recovery port, and the recovery port is connected to the air inlet end of the boosting device 2.

[0046] In this embodiment, the gas in the buffer tank 4 can be recycled for fatigue testing.

[0047] A camera 14 is provided on the top wall of the detection box 1 for observing the outside of the hydrogen cylinder 7 .

[0048] A rotating shaft 5 is provided at the center position of the inner top wall of the detection box 1, and a stirring fan 51 is fixedly connected to the bottom end of the rotating shaft 5. The rotating shaft 5 is driven by an external motor to stir the gas in the detection box 1 to make the gas evenly distributed and improve the temperature regulation efficiency. A second temperature sensor 73 is also provided on the hydrogen cylinder 7 to detect the temperature in the detection box 1. The second temperature sensor 73 is located close to the hydrogen cylinder 7 to accurately measure the ambient temperature of the hydrogen cylinder 7.

[0049] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-pressure hydrogen cylinder extreme working condition fatigue test device, characterized in that: The invention comprises a detection box (1), a gas communication vessel (6), a pressurizing device (2) and a buffer tank (4); a temperature regulating layer (12) is provided on the inner wall of the detection box (1); a temperature regulating component is provided in the temperature regulating layer (12); a hydrogen detection sensor (13) is installed on the top of the detection box (1); a vibration component is provided in the detection box (1); a hydrogen cylinder (7) is fixedly installed on the vibration component; one end of the gas communication vessel (6) is located inside the detection box (1); the other end penetrates the detection box (1) and protrudes outward; the pressurizing device (2) and the The buffer tank (4) is located outside the detection box (1); the air inlet end of the booster device (2) is connected to the hydrogen source; the air outlet end of the booster device (2) is connected to the air inlet end of the hydrogen bottle (7) through the gas connector (6); a flow sensor (3) is provided on the connecting pipeline between the booster device (2) and the gas connector (6); the air outlet end of the hydrogen bottle (7) is connected to the buffer tank (4) through the gas connector (6); and the hydrogen bottle (7) is provided with a first temperature sensor (71) and a pressure sensor (72) for detecting the temperature and pressure in the hydrogen bottle (7).

2. A high-pressure hydrogen cylinder extreme working condition fatigue test device according to claim 1, characterized in that: The gas communicating vessel (6) is provided with an air inlet adapter (61) and an air outlet adapter (62) at the extending end thereof, and an air inlet head and an air outlet head at the extending end thereof; the air inlet adapter (61) is connected to the air inlet head via an air path, and the air outlet adapter (62) is connected to the air outlet head via an air path; The air inlet adapter (61) is rotatably connected to an air inlet pipe, and one end of the air inlet pipe away from the air inlet adapter (61) is connected to the air inlet end of the hydrogen bottle (7); the air outlet adapter (62) is rotatably connected to an air outlet pipe, and one end of the air outlet pipe away from the air outlet adapter (62) is connected to the air outlet end of the hydrogen bottle (7); The flow sensor (3) is connected to the air inlet head, and the air outlet head is connected to the buffer tank (4).

3. The extreme working condition fatigue test device for high pressure hydrogen cylinder according to claim 1 is characterized in that: The vibration assembly comprises a mounting platform (8) and a driving unit. Spring units are symmetrically arranged at the front and rear sides of the bottom of the mounting platform (8). One end of the spring unit away from the mounting platform (8) is fixedly connected to the inner bottom wall of the detection box (1). The spring unit comprises a plurality of vibration springs (81). A clamping unit is arranged at the top of the mounting platform (8). The clamping unit is used to clamp and fix the hydrogen cylinder (7). The driving unit is rotatably connected to the detection box (1) and is used to drive the mounting platform (8) to vibrate.

4. A high-pressure hydrogen cylinder extreme working condition fatigue test device according to claim 3, characterized in that: The clamping unit comprises a fixed clamp seat (83) and a movable clamp seat (84); the fixed clamp seat (83) is fixedly mounted on the mounting platform (8) via a connecting block (82); one end of the movable clamp seat (84) is rotatably connected to one end of the fixed clamp seat (83); the other end of the movable clamp seat (84) is connected to the other end of the fixed clamp seat (83) via bolts; the fixed clamp seat (83) and the movable clamp seat (84) are used to clamp and fix the hydrogen cylinder (7).

5. The extreme working condition fatigue test device for high pressure hydrogen cylinder according to claim 4 is characterized in that: The inner sides of the fixed clamp seat (83) and the movable clamp seat (84) are both provided with clamping pads.

6. The extreme working condition fatigue test device for high pressure hydrogen cylinder according to claim 3 is characterized in that: The driving unit comprises a driving shaft (9) rotatably connected to the detection box (1); a plurality of cams (91) are fixedly sleeved on the driving shaft (9); the cams (91) intermittently contact the mounting platform (8) during rotation, and are used to drive the mounting platform (8) to vibrate; the driving shaft (9) is driven by an external motor.

7. The extreme working condition fatigue test device for high pressure hydrogen cylinder according to claim 1 is characterized in that: An explosion-proof layer (11) is also provided on the inner wall of the detection box (1), and the explosion-proof layer (11) is located outside the temperature adjustment layer (12).

8. The extreme working condition fatigue test device for high pressure hydrogen cylinders according to claim 1 is characterized in that: The buffer tank (4) is provided with a recovery port, and the recovery port is connected to the air inlet end of the boosting device (2).

9. The extreme working condition fatigue test device for high pressure hydrogen cylinder according to claim 1 is characterized in that: A camera (14) is provided on the inner top wall of the detection box (1) for observing the outside of the hydrogen cylinder (7).

10. The extreme working condition fatigue test device for high pressure hydrogen cylinder according to claim 1, characterized in that: A rotating shaft (5) is provided at the center of the inner top wall of the detection box (1), and a stirring fan (51) is fixedly connected to the bottom end of the rotating shaft (5). The rotating shaft (5) is driven by an external motor. A second temperature sensor (73) is also provided on the hydrogen cylinder (7) for detecting the temperature inside the detection box (1).

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