Inflation and deflation cycle test device for high-pressure hydrogen storage cylinder

Abstract

The invention relates to the technical field of gas cylinder detection, and particularly discloses an inflation and deflation cycle test device for a high-pressure hydrogen storage cylinder, which comprises a gas supply tank, hydrogen is filled in the gas supply tank, the inflation and deflation cycle test requirements of a plurality of gas cylinders can be met, and when one gas supply tank cannot meet the inflation and deflation cycle test requirements of the plurality of gas cylinders, the inflation and deflation cycle test device is started. A plurality of gas supply tanks can be connected in series so as to increase the gas storage capacity, and the test assembly comprises a bottom plate and is placed in a plant of a hydrogen storage cylinder to be tested. The second electric telescopic rod drives the sliding frame and the cover plate to move above the gas cylinder, when the sliding frame is at the initial position, the gas cylinder can have enough space to be placed in the test seat, after the sliding frame slides to the designated position, the movable nozzle on the coupling part can be kept at the concentric position with the gas inlet or the gas outlet of the gas cylinder, and the gas cylinder can be placed in the test seat. Therefore, an inflation and deflation cycle test can be conveniently carried out on the gas cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of gas cylinder detection, and in particular to a gas filling and discharging cycle test device for a high-pressure hydrogen storage gas cylinder. Background Art

[0002] A hydrogen storage cylinder is a pressure vessel specially used to store hydrogen. It is widely used in hydrogen fuel cell vehicles, energy storage, chemical industry, aerospace and other fields. Hydrogen storage cylinders are mainly divided into four types according to their materials and structures: Type I cylinder: a metal cylinder, mainly made of pure steel. This type of cylinder has low hydrogen storage density, heavy weight, and poor safety, so it is gradually being eliminated. Type II cylinder: a metal liner fiber hoop-wrapped cylinder. Compared with Type I cylinders, it has been improved in materials and processes, but it still has limitations. Type III cylinder: a metal liner fiber fully wrapped cylinder, usually composed of an aluminum alloy liner and a carbon fiber fully wrapped layer. This type of cylinder has a higher hydrogen storage density, lighter weight and better safety, and has been widely used in hydrogen fuel cell vehicles. Type IV cylinder: a non-metallic fiber fully wrapped cylinder, the liner is a composite material, and a carbon fiber or glass fiber fully wrapped process is used. The filling and discharging cycle test device for high-pressure hydrogen storage cylinders is an important equipment to ensure the safety performance of hydrogen cylinders. It is mainly used to simulate the filling and discharging cycle in actual use to detect the durability and reliability of hydrogen cylinders;

[0003] Prior art publication number CN210037461U discloses a high-pressure hydrogen storage cylinder charging and discharging cycle test system. This technology uses a hydrogen source, a compression device, a high-pressure hydrogen storage device, a transmission circuit; a hydrogen flow control device, a hydrogen temperature control device, an environmental temperature and humidity control device, a hydrogen recovery device, a venting device, and a measurement control unit to complete the test device system required for hydrogen pressure fatigue test at room temperature and extreme temperature and gas pressure penetration / leakage test at extreme temperature in the performance test of Class B gas cylinders with hydrogen as the medium;

[0004] The problem with the prior art is that when testing hydrogen storage cylinders, it is necessary to manually connect the air inlet and outlet pipes to the air inlet and outlet of the cylinder. When encountering a large number of cylinders, this operation step needs to be repeated for each cylinder, which affects the test efficiency. In addition, when the cylinder is placed on the testing station, the angles of the air inlet and outlet of the cylinder need to correspond to the positions of the air inlet and outlet pipes, so they often need to be adjusted to specified angles, further reducing the test efficiency. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] The present invention provides a high-pressure hydrogen storage cylinder charging and discharging cycle test device, which can solve the problem of low efficiency in testing a large number of cylinders in the prior art. The specific scheme is as follows:

[0007] A high-pressure hydrogen storage cylinder charging and discharging cycle test device includes a gas supply tank, the gas supply tank is filled with hydrogen, and can meet the charging and discharging cycle test requirements of several gas cylinders. When one gas supply tank cannot meet the charging and discharging cycle test requirements of multiple gas cylinders, multiple gas supply tanks can be connected in series to increase the gas storage capacity, and a test assembly, the test assembly includes:

[0008] The bottom plate is placed in the workshop of the hydrogen storage cylinder to be tested;

[0009] There are several test seats, which are fixedly installed on the top of the bottom plate, and the gas cylinder is placed in the test seat. The shape and size of the test seat match the shape and size of the gas cylinder to be tested;

[0010] An air inlet pipe, one end of which is connected to the air inlet of the gas cylinder, and the other end of which is connected to the gas supply tank, and a first one-way solenoid valve is also connected between the air inlet pipe and the gas supply tank;

[0011] Through the first one-way solenoid valve, the gas in the gas supply tank can only enter the gas cylinder from the air inlet pipe, and the gas in the gas cylinder cannot flow back to the gas supply tank from the air inlet pipe;

[0012] An air outlet pipe, one end of which is connected to the air outlet of the gas cylinder, and the other end is connected to the gas supply tank, and a second one-way solenoid valve is also connected between the air outlet pipe and the gas supply tank;

[0013] Through the second one-way solenoid valve, the gas in the gas cylinder can only enter the gas supply tank from the gas outlet pipe, and the gas in the gas supply tank cannot enter the gas cylinder from the gas outlet pipe, thereby realizing the filling and deflation test requirements of the gas cylinder. Flow meters are also installed on the gas outlet pipe and the gas inlet pipe to monitor the gas intake and outlet volumes;

[0014] A pressure sensor, mounted on the detection port of the gas cylinder, for detecting the gas pressure inside the gas cylinder;

[0015] The intake volume is monitored by the flow meter on the intake pipe, and then the air pressure in the gas cylinder is monitored by the pressure sensor. Since the pressure in the gas cylinder is regular with the flow rate of the flow meter, by comparing the value of the pressure sensor with the value of the flow meter, it can be determined whether the gas cylinder has a leak.

[0016] Preferably, a cover plate is provided above the test seat, both ends of the cover plate are slidably connected to the top of the test seat, the inner side of the cover plate is in contact with the outer wall of the gas cylinder, and the inner wall of the cover plate is connected with an elastic material;

[0017] By providing a movable cover, the cover can fix the top of the gas cylinder to prevent the gas cylinder from jumping out of the test seat during the test, thereby ensuring the safety of the test.

[0018] Preferably, a tail cover is provided at the rear end of the gas cylinder, a slider is fixedly connected to the bottom of the tail cover, the slider is slidably connected to one end of the test seat, a slide rail is further provided at the bottom of the tail cover, the slide rail is slidably connected to the bottom plate, one end of the tail cover is connected to a first electric telescopic rod, and the first electric telescopic rod is mounted on the bottom plate;

[0019] The tail cover is driven to slide by the first electric telescopic rod, so that the tail cover can fix the tail of the gas cylinder, thereby further reinforcing the gas cylinder.

[0020] Preferably, the air inlet pipe and the air outlet pipe are connected via a coupling component, and the coupling component includes:

[0021] A sleeve, fixedly connected to one end of the cover plate;

[0022] A movable nozzle, wherein the movable nozzle is connected to the bottom end of the sleeve through a first spring;

[0023] A first piston block is connected to one end of the movable nozzle, and the first piston block is sealingly and slidably connected to the inner wall of the sleeve;

[0024] The first driving pipe is connected to the top of the sleeve and communicates with the interior of the sleeve. When high-pressure gas enters from the first driving pipe, the first piston block and the movable nozzle slide toward the gas inlet or gas outlet of the gas cylinder under the push of the gas pressure. The gas inlet and the gas outlet are both provided with elastic valves. When external force is pressed toward the gas cylinder, the valve body will open, and the gas pressure in the gas cylinder cannot open the elastic valve.

[0025] Through the above scheme, when the movable mouth of the coupling component extends into the air inlet or outlet of the gas cylinder, the gas can enter the gas cylinder or be discharged from the gas cylinder. By controlling the air pressure entering the first drive pipeline, the movable mouth of the coupling component can be controlled.

[0026] Preferably, a driving assembly is provided at the bottom of the pressure sensor, and the driving assembly comprises:

[0027] A fixing sleeve connected to one end of the cover plate;

[0028] A connecting rod connected to the bottom of the pressure sensor;

[0029] A detection end, arranged at the bottom end of the connecting rod;

[0030] A second piston block, the second piston block is connected to the middle part of the connecting rod, the second piston block is sealingly and slidably connected to the inner wall of the fixed sleeve, and a second spring is connected between the bottom of the second piston block and the inner wall of the fixed sleeve;

[0031] A second driving pipeline is connected to the top of the fixing sleeve and communicates with the interior of the fixing sleeve;

[0032] A one-way valve is installed in the detection port of the gas cylinder;

[0033] Through the above scheme, when high-pressure gas enters from the second drive pipeline, under the push of the gas pressure, the second piston block and connecting rod slide toward the inside of the detection port of the gas cylinder, pushing open the one-way valve, so that the gas pressure in the gas cylinder can be detected by the detection end.

[0034] Preferably, a support frame is connected to one side of the bottom plate, a top plate is connected to the top of the support frame, a sliding frame is slidably mounted on the top plate, a second electric telescopic rod is connected between the sliding frame and the top plate, and one end of the sliding frame is fixedly connected to the top of the cover plate;

[0035] Through the above scheme, the second electric telescopic rod can drive the sliding frame and the cover plate to move above the gas cylinder. When the sliding frame is in the initial position, the gas cylinder can have enough space to be placed in the test seat. When the sliding frame is slid to the specified position, the movable nozzle on the coupling component can maintain a concentric position with the air inlet or outlet of the gas cylinder, so as to facilitate the filling and discharging cycle test of the gas cylinder.

[0036] Preferably, one end of the sliding frame is also connected to a visual sensor, and when the sliding frame is in a default position, the visual sensor can be aligned with the bottle mouth of the gas cylinder.

[0037] Preferably, a motor is connected to the middle part of the tail cover, a suction cup is connected to the output end of the motor, a groove is provided at the end of the suction cup close to the gas cylinder, an annular groove is provided on the outer wall of the suction cup, the inside of the annular groove is connected to the groove through a connecting hole, a negative pressure hole is provided on the side wall of the tail cover, one end of the negative pressure hole corresponds to the position of the annular groove, and the other end of the negative pressure hole is connected to a negative pressure pump.

[0038] Preferably, an industrial computer is further included, and the output end of the pressure sensor is signal-connected to the input end of the industrial computer.

[0039] Preferably, when negative pressure is formed between the groove at one end of the suction cup and the space formed by the gas cylinder, the motor can drive the suction cup and the gas cylinder to rotate synchronously to adjust the orientation angle of the gas cylinder mouth;

[0040] When the gas cylinder is placed in the test seat, it is located on the right side of the test seat. At this time, the motor drives the suction cup and the gas cylinder to rotate, and the visual sensor is used to monitor the mouth of the gas cylinder. When the detection port of the gas cylinder is facing upward, the industrial computer determines that the angle of the gas cylinder is at the set angle value. At this time, the motor stops rotating, and the first electric telescopic rod drives the tail cover and the gas cylinder to slide, pushing the gas cylinder to the leftmost side of the test seat to ensure that the gas cylinder is at the correct angle, so that the positions of the air inlet pipe, the air outlet pipe and the pressure sensor can correspond to the positions of the air inlet, the air outlet and the detection port of the gas cylinder.

[0041] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0042] 1. The present invention drives the sliding frame and the cover plate to move above the gas cylinder through the second electric telescopic rod. When the sliding frame is in the initial position, the gas cylinder can have enough space to be placed in the test seat. When the sliding frame is slid to the specified position, the movable nozzle on the coupling component can maintain a concentric position with the gas inlet or outlet of the gas cylinder, so as to facilitate the gas cylinder to be charged and discharged cycle test.

[0043] 2. The present invention drives multiple cover plates and components on the cover plates to move by means of a sliding frame, so that multiple air inlet pipes and multiple air outlet pipes can correspond to the positions of the air inlets and air outlets of multiple gas cylinders, and the pressure sensor can correspond to the position of the detection port of the gas cylinder. The pressure data in the gas cylinder is monitored in real time by the pressure sensor, so that it is convenient to perform inflation and deflation tests on multiple gas cylinders at the same time, thereby improving the detection efficiency of large quantities of gas cylinders.

[0044] 3. The present invention monitors the intake volume through the flow meter on the intake pipe, and then monitors the air pressure in the gas cylinder through the pressure sensor. Since the pressure in the gas cylinder is regular with the flow rate of the flow meter, it is possible to determine whether the gas cylinder has a leak by comparing the value of the pressure sensor with the value of the flow meter.

[0045] 4. In the present invention, when the gas cylinder is placed in the test seat, the gas cylinder is located on the right side of the test seat. At this time, the motor drives the suction cup and the gas cylinder to rotate, and the visual sensor is used to monitor the mouth of the gas cylinder. When the detection port of the gas cylinder is facing upward, the industrial computer determines that the angle of the gas cylinder is at the set angle value. At this time, the motor stops rotating, and the first electric telescopic rod drives the tail cover and the gas cylinder to slide, pushing the gas cylinder to the leftmost side of the test seat to ensure that the gas cylinder is at the correct angle, so that the positions of the air inlet pipe, the air outlet pipe and the pressure sensor can correspond to the positions of the air inlet, the air outlet and the detection port of the gas cylinder.

[0046] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative labor. Among them:

[0048] Figure 1 It is an overall stereogram of the present invention;

[0049] Figure 2 It is a three-dimensional diagram of the test state of the present invention;

[0050] Figure 3 It is a partial stereogram of the present invention;

[0051] Figure 4 It is a partial cross-sectional schematic diagram of the present invention;

[0052] Figure 5 is a structural diagram of the pressure sensor of the present invention;

[0053] Figure 6 is a cross-sectional view of a coupling component of the present invention;

[0054] Figure 7 It is a half-section diagram of the present invention;

[0055] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0056] Fig. 9 It is a state change diagram of the sliding frame of the present invention;

[0057] Fig.10 For the present invention Fig. 9 Enlarged view of point B in the middle;

[0058] Fig.11 It is a partial stereoscopic diagram from another perspective of the present invention;

[0059] Fig.12 It is a structural diagram of the test stand and the gas cylinder of the present invention;

[0060] Fig.13 It is a schematic diagram of the gas supply tank and gas cylinder of the present invention;

[0061] Fig.14 This is a system block diagram of the present invention.

[0062] The reference numerals are as follows:

[0063] 1. Gas cylinder; 101. One-way valve; 2. Gas supply tank; 3. Test assembly; 301. Bottom plate; 302. Support frame; 303. Top plate; 304. Sliding frame; 305. Second electric telescopic rod; 306. Cover plate; 307. Inlet pipe; 308. First one-way solenoid valve; 309. Outlet pipe; 310. Second one-way solenoid valve; 311. Pressure sensor; 312. Coupling component; 3121. Sleeve; 3122. Active nozzle; 3123. First spring; 312 4. The first driving pipeline; 3125. The first piston block; 313. The driving assembly; 3131. The fixing sleeve; 3132. The connecting rod; 3133. The detecting end; 3134. The second spring; 3135. The second piston block; 314. The tail cover; 315. The slider; 316. The first electric telescopic rod; 317. The motor; 318. The suction cup; 319. The annular groove; 320. The connecting hole; 321. The groove; 322. The test seat; 323. The negative pressure hole; 324. The visual sensor. DETAILED DESCRIPTION

[0064] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0065] Example 1: See Figure 1-Figure 14 The present embodiment provides a high-pressure hydrogen storage cylinder charging and discharging cycle test device, including a gas supply tank 2, the gas supply tank 2 is filled with hydrogen, and can meet the charging and discharging cycle test requirements of several gas cylinders 1. When one gas supply tank 2 cannot meet the charging and discharging cycle test requirements of multiple gas cylinders 1, multiple gas supply tanks 2 can be connected in series to increase the gas storage capacity, and a test component 3, the test component 3 includes:

[0066] The bottom plate 301 is placed in the workshop of the hydrogen storage cylinder to be tested;

[0067] There are several test seats 322, which are fixedly installed on the top of the bottom plate 301, and the gas cylinder 1 is placed in the test seat 322. The shape and size of the test seat 322 match the shape and size of the gas cylinder 1 to be tested;

[0068] An air inlet pipe 307, one end of which is connected to the air inlet of the gas cylinder 1, and the other end is connected to the gas supply tank 2, and a first one-way solenoid valve 308 is also connected between the air inlet pipe 307 and the gas supply tank 2;

[0069] Through the first one-way solenoid valve 308, the gas in the gas supply tank 2 can only enter the gas cylinder 1 from the gas inlet pipe 307, and the gas in the gas cylinder 1 cannot flow back to the gas supply tank 2 from the gas inlet pipe 307;

[0070] An air outlet pipe 309, one end of which is connected to the air outlet of the gas cylinder 1, and the other end is connected to the gas supply tank 2, and a second one-way solenoid valve 310 is also connected between the air outlet pipe 309 and the gas supply tank 2;

[0071] Through the second one-way solenoid valve 310, the gas in the gas cylinder 1 can only enter the gas supply tank 2 from the gas outlet pipe 309, and the gas in the gas supply tank 2 cannot enter the gas cylinder 1 from the gas outlet pipe 309, thereby achieving the filling and discharging test requirements of the gas cylinder 1. Flow meters are also installed on the gas outlet pipe 309 and the gas inlet pipe 307 to monitor the gas intake and outlet volumes;

[0072] The pressure sensor 311 is installed on the detection port of the gas cylinder 1 and is used to detect the gas pressure inside the gas cylinder 1;

[0073] The intake air volume is monitored by the flow meter on the intake pipe 307, and then the air pressure in the gas cylinder 1 is monitored by the pressure sensor 311. Since the pressure in the gas cylinder 1 is regular with the flow rate of the flow meter, it is possible to determine whether the gas cylinder 1 has a leak by comparing the value of the pressure sensor 311 with the value of the flow meter.

[0074] As a possible embodiment, a cover plate 306 is disposed above the test seat 322, both ends of the cover plate 306 are slidably connected to the top of the test seat 322, the inner side of the cover plate 306 is in contact with the outer wall of the gas cylinder 1, and the inner wall of the cover plate 306 is connected with an elastic material;

[0075] By providing a movable cover plate 306, the cover plate 306 can fix the top of the gas cylinder 1 to prevent the gas cylinder 1 from jumping out of the test seat 322 during the test, thereby ensuring the safety of the test.

[0076] like Figure 3 , Figure 4 As shown, as a possible embodiment, a tail cover 314 is provided at the rear end of the gas cylinder 1, a slider 315 is fixedly connected to the bottom of the tail cover 314, the slider 315 is slidably connected to one end of the test seat 322, a slide rail is further provided at the bottom of the tail cover 314, the slide rail is slidably connected to the bottom plate 301, one end of the tail cover 314 is connected to a first electric telescopic rod 316, and the first electric telescopic rod 316 is installed on the bottom plate 301;

[0077] The tail cover 314 is driven to slide by the first electric telescopic rod 316 , so that the tail cover 314 can fix the tail of the gas cylinder 1 , thereby further reinforcing the gas cylinder 1 .

[0078] like Figure 6 As shown, as a possible embodiment, the air inlet pipe 307 and the air outlet pipe 309 are connected by a coupling component 312, and the coupling component 312 includes:

[0079] The sleeve 3121 is fixedly connected to one end of the cover plate 306;

[0080] A movable nozzle 3122, the movable nozzle 3122 is connected to the bottom end of the sleeve 3121 through a first spring 3123;

[0081] A first piston block 3125 is connected to one end of the movable nozzle 3122, and the first piston block 3125 is sealingly and slidably connected to the inner wall of the sleeve 3121;

[0082] The first driving pipe 3124 is connected to the top of the sleeve 3121 and communicates with the interior of the sleeve 3121. When high-pressure gas enters from the first driving pipe 3124, the first piston block 3125 and the movable nozzle 3122 slide toward the gas inlet or gas outlet of the gas cylinder 1 under the push of the gas pressure. The gas inlet and the gas outlet are both provided with elastic valves. When external force is pressed toward the gas cylinder 1, the valve body will open. The gas pressure in the gas cylinder 1 cannot open the elastic valve. The elastic valve is composed of a valve body and a pressure spring. When an external object presses the valve body, the pressure of the pressure spring can be overcome to press the valve body inward, so that the movable nozzle 3122 is communicated with the interior of the gas cylinder 1.

[0083] Through the above scheme, when the movable mouth 3122 of the coupling component 312 extends into the air inlet or outlet of the gas cylinder 1, the gas can enter the gas cylinder 1 or be discharged from the gas cylinder 1. By controlling the air pressure entering the first driving pipe 3124, the movable mouth 3122 of the coupling component 312 can be controlled.

[0084] like Figure 5 As shown, as a possible embodiment, a driving assembly 313 is provided at the bottom of the pressure sensor 311, and the driving assembly 313 includes:

[0085] A fixing sleeve 3131 connected to one end of the cover plate 306;

[0086] A connecting rod 3132 connected to the bottom of the pressure sensor 311;

[0087] The detection end 3133 is arranged at the bottom end of the connecting rod 3132;

[0088] A second piston block 3135, which is connected to the middle of the connecting rod 3132, and is sealingly and slidably connected to the inner wall of the fixing sleeve 3131. A second spring 3134 is connected between the bottom of the second piston block 3135 and the inner wall of the fixing sleeve 3131;

[0089] The second driving pipe 3136 is connected to the top of the fixing sleeve 3131 and communicates with the interior of the fixing sleeve 3131;

[0090] A one-way valve 101 is installed in the detection port of the gas cylinder 1;

[0091] Through the above scheme, when high-pressure gas enters from the second driving pipe 3136, under the push of the gas pressure, the second piston block 3135 and the connecting rod 3132 slide toward the inside of the detection port of the gas cylinder 1, pushing open the one-way valve 101, so that the gas pressure in the gas cylinder can be detected by the detection end 3133.

[0092] like Figure 2 As shown, as a possible embodiment, a support frame 302 is connected to one side of the bottom plate 301, a top plate 303 is connected to the top of the support frame 302, a sliding frame 304 is slidably mounted on the top plate 303, a second electric telescopic rod 305 is connected between the sliding frame 304 and the top plate 303, and one end of the sliding frame 304 is fixedly connected to the top of the cover plate 306;

[0093] Through the above scheme, the second electric telescopic rod 305 can drive the sliding frame 304 and the cover plate 306 to move above the gas cylinder 1. When the sliding frame 304 is in the initial position, there is enough space for the gas cylinder 1 to be placed in the test seat 322. When the sliding frame 304 is slid to the specified position, the movable nozzle 3122 on the coupling component 312 can maintain a concentric position with the air inlet or outlet of the gas cylinder 1, so as to facilitate the filling and discharging cycle test of the gas cylinder 1.

[0094] Embodiment 2: Figure 2 , Figure 3 , Fig. 9 , Fig.10 As shown, the technical solution of this embodiment is different from that of the first embodiment in that one end of the sliding frame 304 is further connected to a visual sensor 324. When the sliding frame 304 is in the default position, the visual sensor 324 can be aligned with the bottle mouth of the gas cylinder 1. The visual sensor 324 is an industrial camera.

[0095] Visual Positioning, or Visual Positioning Apparatus (VPA), is a vision-based spatial positioning technology that captures images and video signals and uses image processing algorithms to analyze these data to determine the position and direction of an object. This technology relies on computer vision algorithms such as image recognition and feature matching to achieve accurate spatial positioning. The main principle is to capture images and video signals, use image processing algorithms to extract and match features in the image, and thus calculate the precise position and direction of the object. This technology is well known to those skilled in the art, so it will not be elaborated in detail.

[0096] A motor 317 is connected to the middle of the tail cover 314, and a suction cup 318 is connected to the output end of the motor 317. A groove 321 is provided at one end of the suction cup 318 close to the gas cylinder 1, and an annular groove 319 is provided on the outer wall of the suction cup 318. The interior of the annular groove 319 is connected to the groove 321 through a connecting hole 320. A negative pressure hole 323 is provided on the side wall of the tail cover 314, and one end of the negative pressure hole 323 corresponds to the position of the annular groove 319, and the other end of the negative pressure hole 323 is connected to a negative pressure pump (not shown in the figure);

[0097] In the above scheme, when the negative pressure pump is started, since the negative pressure hole 323, the annular groove 319, the connecting hole 320 and the groove 321 are interconnected, when the negative pressure pump pumps the gas inside it outward, negative pressure can be formed in the groove 321, so that the suction cup 318 can be tightly sucked on one end of the gas cylinder 1.

[0098] like Fig.14 As shown, as a possible embodiment, an industrial computer is also included, and the output end of the pressure sensor 311 is signal-connected to the input end of the industrial computer.

[0099] like Fig.10 As shown in the figure, as a possible embodiment, when negative pressure is formed between the groove 321 at one end of the suction cup 318 and the gas cylinder 1, the motor 317 can drive the suction cup 318 and the gas cylinder 1 to rotate synchronously to adjust the orientation angle of the mouth of the gas cylinder 1;

[0100] When the gas cylinder 1 is placed in the test seat 322, the gas cylinder 1 is located on the right side of the test seat 322. At this time, the motor 317 drives the suction cup 318 and the gas cylinder 1 to rotate, and the visual sensor 324 is used to detect the bottle mouth of the gas cylinder 1. When the detection port of the gas cylinder 1 is facing upward, the industrial computer determines that the angle of the gas cylinder 1 is at the set angle value. At this time, the motor 317 stops rotating, and the first electric telescopic rod 316 drives the tail cover 314 and the gas cylinder 1 to slide, pushing the gas cylinder 1 to the leftmost side of the test seat 322 to ensure that the gas cylinder 1 is at the correct angle, so that the positions of the air inlet pipe 307, the air outlet pipe 309 and the pressure sensor 311 can correspond to the positions of the air inlet, the air outlet and the detection port of the gas cylinder 1.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0102] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-pressure hydrogen storage cylinder filling and discharging cycle test device, characterized in that: The invention comprises a gas supply tank (2), and a test assembly (3), wherein the test assembly (3) comprises: Bottom plate (301); A plurality of test seats (322) are fixedly mounted on the top of the bottom plate (301), and the gas cylinder (1) is placed in the test seat (322); An air intake pipe (307), one end of which is connected to the air intake port of the gas cylinder (1), and the other end of which is connected to the gas supply tank (2); a first one-way solenoid valve (308) is also connected between the air intake pipe (307) and the gas supply tank (2); An air outlet pipe (309), one end of which is connected to the air outlet of the gas cylinder (1), and the other end of which is connected to the gas supply tank (2); a second one-way solenoid valve (310) is also connected between the air outlet pipe (309) and the gas supply tank (2); The pressure sensor (311) is installed on the detection port of the gas cylinder (1) and is used to detect the gas pressure inside the gas cylinder (1).

2. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 1, characterized in that: A cover plate (306) is arranged above the test seat (322), and both ends of the cover plate (306) are slidably connected to the top of the test seat (322), the inner side of the cover plate (306) is in contact with the outer wall of the gas cylinder (1), and the inner wall of the cover plate (306) is connected with an elastic material.

3. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 1, characterized in that: The rear end of the gas cylinder (1) is provided with a tail cover (314), the bottom of the tail cover (314) is fixedly connected with a slider (315), the slider (315) is slidably connected to one end of the test seat (322), the bottom of the tail cover (314) is also provided with a slide rail, the slide rail is slidably connected to the bottom plate (301), one end of the tail cover (314) is connected with a first electric telescopic rod (316), and the first electric telescopic rod (316) is installed on the bottom plate (301).

4. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 2, characterized in that: The air inlet pipe (307) and the air outlet pipe (309) are both connected via a coupling component (312), and the coupling component (312) includes: A sleeve (3121) is fixedly connected to one end of the cover plate (306); A movable nozzle (3122), wherein the movable nozzle (3122) is connected to the bottom end of the sleeve (3121) via a first spring (3123); A first piston block (3125) is connected to one end of the movable nozzle (3122), and the first piston block (3125) is sealingly and slidably connected to the inner wall of the sleeve (3121); The first driving pipe (3124) is connected to the top of the sleeve (3121) and communicates with the interior of the sleeve (3121). When high-pressure gas enters from the first driving pipe (3124), the first piston block (3125) and the movable nozzle (3122) slide toward the inside of the gas inlet or outlet of the gas cylinder (1) under the push of the gas pressure.

5. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 2, characterized in that: A driving assembly (313) is provided at the bottom of the pressure sensor (311), and the driving assembly (313) comprises: A fixing sleeve (3131) connected to one end of the cover plate (306); A connecting rod (3132) connected to the bottom of the pressure sensor (311); A detection end (3133) is arranged at the bottom end of the connecting rod (3132); A second piston block (3135), the second piston block (3135) is connected to the middle part of the connecting rod (3132), the second piston block (3135) is sealingly and slidably connected to the inner wall of the fixed sleeve (3131), and a second spring (3134) is connected between the bottom of the second piston block (3135) and the inner wall of the fixed sleeve (3131); A second driving pipe (3136) is connected to the top of the fixing sleeve (3131) and communicates with the interior of the fixing sleeve (3131); A one-way valve (101) is installed in the detection port of the gas cylinder (1). When high-pressure gas enters from the second driving pipe (3136), the second piston block (3135) and the connecting rod (3132) slide toward the inside of the detection port of the gas cylinder (1) under the push of the gas pressure, pushing open the one-way valve (101), so that the gas pressure in the gas cylinder can be detected by the detection end (3133).

6. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 2, characterized in that: A support frame (302) is connected to one side of the bottom plate (301), a top plate (303) is connected to the top of the support frame (302), a sliding frame (304) is slidably mounted on the top plate (303), a second electric telescopic rod (305) is connected between the sliding frame (304) and the top plate (303), and one end of the sliding frame (304) is fixedly connected to the top of the cover plate (306).

7. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 6, characterized in that: One end of the sliding frame (304) is also connected to a visual sensor (324). When the sliding frame (304) is in a default position, the visual sensor (324) can be aligned with the bottle mouth of the gas cylinder (1).

8. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 3, characterized in that: A motor (317) is connected to the middle of the tail cover (314), and a suction cup (318) is connected to the output end of the motor (317). A groove (321) is provided at one end of the suction cup (318) close to the gas cylinder (1), and an annular groove (319) is provided on the outer wall of the suction cup (318). The interior of the annular groove (319) is connected to the groove (321) via a connecting hole (320). A negative pressure hole (323) is provided on the side wall of the tail cover (314), and one end of the negative pressure hole (323) corresponds to the position of the annular groove (319), and the other end of the negative pressure hole (323) is connected to a negative pressure pump.

9. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 1, characterized in that: An industrial computer is also included, and the output end of the pressure sensor (311) is signal-connected to the input end of the industrial computer.

10. A high-pressure hydrogen storage cylinder charging and discharging cycle test device as claimed in claim 8, characterized in that: When negative pressure is formed between the groove (321) at one end of the suction cup (318) and the gas cylinder (1), the motor (317) can drive the suction cup (318) and the gas cylinder (1) to rotate synchronously to adjust the orientation angle of the mouth of the gas cylinder (1).

Images