A dual-power source gas cylinder fatigue test device

Abstract

The present invention belongs to the technical field of high-pressure gas cylinder fatigue testing, and specifically relates to a dual-power source gas cylinder fatigue testing device, comprising a hydraulic pump, an industrial control integrated computer, a gas cylinder connection group, and multiple gas-liquid booster pumps. The gas-liquid booster pumps include a liquid inlet, a liquid outlet, and an air inlet. The liquid inlet of the gas-liquid booster pump is connected to the hydraulic pump, and the liquid outlet of the gas-liquid booster pump is connected to the gas cylinder connection group. The gas cylinder connection group includes multiple parallel quick connectors A with check valves. The air inlet of the gas-liquid booster pump is connected to an air source, and an electromagnetic reversing valve is installed between the gas-liquid booster pump and the air source. The gas cylinder connection group is also connected to a pressure transmitter and a pressure regulating valve. The industrial control integrated computer is respectively connected to the hydraulic pump, the electromagnetic reversing valve, and the pressure transmitter for signal transmission. The purpose of the device is to simultaneously pressurize the hydraulic oil using multiple parallel gas-liquid booster pumps, thereby increasing the charging speed and reducing the equipment purchase cost compared to equipment that can pressurize the hydraulic oil at a large flow rate at one time.

Description

Technical Field

[0001] The invention belongs to the technical field of high-pressure gas cylinder fatigue testing, and in particular relates to a gas cylinder fatigue testing device with dual power sources. Background Art

[0002] The development of the gas cylinder industry is closely tied to the growth of industry. With the rapid advancement of science and technology and industry, the application of high-pressure gas cylinders is becoming increasingly widespread. Various high-pressure, high-performance gas cylinders are undergoing continuous research and development, and high-pressure gas cylinders are now included in the type testing of the civilian gas cylinder industry. High-pressure gas cylinder fatigue testing plays a vital role in improving the production process and overall performance of high-pressure gas cylinders, contributing to the development of the high-pressure gas cylinder industry.

[0003] High-pressure gas cylinder fatigue testing involves repeated pressurization tests on high-pressure gas cylinders over a period of time to achieve continuous pulse pressure cycles. After the test, the integrity of the gas cylinders is observed and the corresponding data is recorded. However, existing high-pressure gas cylinder fatigue testing equipment has a complex structure, high cost, and can only test one high-pressure gas cylinder at a time, resulting in low efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a dual-power source gas cylinder fatigue test device, which simultaneously pressurizes the hydraulic oil through multiple parallel gas-liquid booster pumps, thereby increasing the charging speed and reducing the equipment purchase cost compared to equipment that can pressurize the hydraulic oil at a large flow rate at one time.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] A dual-power source gas cylinder fatigue test device includes a hydraulic pump, an industrial control all-in-one computer, a gas cylinder connection group and multiple gas-liquid booster pumps, the gas-liquid booster pump includes a liquid inlet, a liquid outlet and an air inlet, the liquid inlet of the gas-liquid booster pump is connected to the hydraulic pump, the liquid outlet of the gas-liquid booster pump is connected to the gas cylinder connection group, the gas cylinder connection group includes multiple parallel quick connectors A with one-way valves, the air inlet of the gas-liquid booster pump is connected to an air source, an electromagnetic reversing valve is installed between the gas-liquid booster pump and the air source, the gas cylinder connection group is also connected to a pressure transmitter and a pressure regulating valve, and the industrial control all-in-one computer is respectively connected to the hydraulic pump, the electromagnetic reversing valve and the pressure transmitter signals.

[0007] Furthermore, the boosting ratios of the plurality of gas-liquid booster pumps are different. Such a structural design can ensure maximum boosting speed and efficiency according to the number of gas cylinders tested and the test pressure.

[0008] It is further defined that the pressure regulating valve is connected to an electric proportional valve, the electric proportional valve is in communication with the gas source, and the industrial control computer is signal-connected to the electric proportional valve. This structural design allows the industrial control computer to control the electric proportional valve, thereby controlling the back pressure applied by the gas source through the electric proportional valve to the pressure regulating valve, thereby controlling the rated pressure of the pressure regulating valve and, in turn, manipulating the pressure of the hydraulic oil within the gas cylinder connection group.

[0009] It is further defined that a quick connector B with a one-way valve is installed between the liquid outlet of each gas-liquid booster pump and the gas cylinder connection assembly. This structural design allows for easy maintenance of any gas-liquid booster pump by simply opening the corresponding quick connector B with a one-way valve to disconnect the corresponding gas-liquid booster pump pipeline. When needed, the corresponding quick connector B with a one-way valve can be reconnected, providing ease of use.

[0010] Furthermore, the industrial control computer is signal-connected to a temperature transmitter mounted on the gas cylinder connection group. This structural design allows the temperature transmitter to monitor the outer wall temperature of the gas cylinders in the gas cylinder connection group in real time and provide feedback to the industrial control computer, thereby preventing accidents such as explosions caused by excessive temperatures of the gas cylinders after prolonged use.

[0011] It is further defined that the inlet end of the hydraulic pump is connected to an oil tank, and the oil tank is equipped with a filter, a liquid level gauge, a thermometer, and a cooler. The filter is installed between the oil tank and the hydraulic pump, and the liquid level gauge, thermometer, and cooler are connected to the industrial control integrated computer by signal. This structural design allows the hydraulic oil entering the hydraulic pump to be filtered through the filter, the remaining oil in the oil tank to be detected by the liquid level gauge, the real-time temperature of the hydraulic oil in the oil tank to be detected by the thermometer, and the hydraulic oil to be cooled by the cooler.

[0012] It is further defined that a quick connector C with a one-way valve is installed between the hydraulic pump and the liquid inlet of each gas-liquid booster pump. With this structural design, the hydraulic pump is connected to the liquid inlet of each gas-liquid booster pump via the quick connector C with a one-way valve. If any gas-liquid booster pump is damaged, the quick connector C can be directly disconnected to cut off the pipeline corresponding to the damaged gas-liquid booster pump, providing convenient use.

[0013] Furthermore, a relief valve is installed on the pipeline between the hydraulic pump and the gas-liquid booster pump. Such a structural design limits the pressure of the hydraulic oil entering the gas-liquid booster pump through the relief valve, and also plays a role in stabilizing the pressure.

[0014] The invention adopting the above technical solution has the following advantages:

[0015] 1. The hydraulic oil is pressurized simultaneously by multiple gas-liquid booster pumps in parallel, which increases the charging speed and reduces the equipment purchase cost compared with equipment that can charge the hydraulic oil with a large flow rate at one time;

[0016] 2. The hydraulic oil pumped out by the hydraulic pump is pressurized twice by multiple gas-liquid booster pumps, which greatly reduces the power demand of the hydraulic pump motor and the demand for power lines. The inverter can use 220V voltage, which has low environmental requirements and strong adaptability.

[0017] 3. Multiple gas-liquid booster pumps are connected in parallel without affecting each other. Even if one of the gas-liquid booster pumps is damaged during use, it will not affect the experimental results, and the adaptability is strong;

[0018] 4. By installing a quick connector B with a one-way valve between the liquid outlet of each gas-liquid booster pump and the gas cylinder connection group, when repairing any gas-liquid booster pump, the quick connector B with a one-way valve corresponding to the gas-liquid booster pump can be directly opened to cut off the pipeline corresponding to the gas-liquid booster pump. When needed, the corresponding quick connector B with a one-way valve can be connected, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0020] Figure 1 This is a structural schematic diagram of an embodiment of a dual-power source gas cylinder fatigue test device of the present invention;

[0021] The main component symbols are described as follows:

[0022] Hydraulic pump 1, oil tank 11, filter 12, liquid level gauge 13, thermometer 14, cooler 15, relief valve 16,

[0023] Industrial control all-in-one machine 2, temperature transmitter 21, gas-liquid booster pump 3,

[0024] Quick connector A41, Quick connector B42, Quick connector C43,

[0025] Air source 5, electromagnetic reversing valve 6, pressure transmitter 71, pressure regulating valve 72, electric proportional valve 720;

[0026] In the figure, solid lines represent pipelines, and dotted lines represent power lines or signal lines. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts are numbered the same. Implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. In addition, directional terms mentioned in the embodiments, such as "upper," "lower," "top," "bottom," "left," "right," "front," and "back," are merely references to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0028] like Figure 1 As shown, a dual-power source gas cylinder fatigue test device of the present invention includes a hydraulic pump 1, an industrial control all-in-one computer 2, a gas cylinder connection group and four gas-liquid booster pumps 3. The gas-liquid booster pump 3 includes a liquid inlet, a liquid outlet and an air inlet. The liquid inlet of the gas-liquid booster pump 3 is connected to the hydraulic pump 1, and the liquid outlet of the gas-liquid booster pump 3 is connected to the gas cylinder connection group. The gas cylinder connection group includes multiple parallel quick connectors A41 with one-way valves. The air inlet of the gas-liquid booster pump 3 is connected to the gas source 5. An electromagnetic reversing valve 6 is installed between the gas-liquid booster pump 3 and the gas source 5. The gas cylinder connection group is also connected to a pressure transmitter 71 and a pressure regulating valve 72. The industrial control all-in-one computer 2 is respectively connected to the hydraulic pump 1, the electromagnetic reversing valve 6 and the pressure transmitter 71 for signals.

[0029] The boosting ratios of the four gas-liquid booster pumps 3 in this embodiment are different, and the maximum boosting speed and efficiency can be ensured according to the number of gas cylinders 10 tested and the different test pressures.

[0030] Pressure regulating valve 72 is connected to an electric proportional valve 720, which is in communication with gas source 5. Industrial computer 2 is also connected to the electric proportional valve 720 for signal communication. Industrial computer 2 controls the electric proportional valve 720, thereby controlling the back pressure applied by gas source 5 through the electric proportional valve 720 to pressure regulating valve 72, thereby controlling the rated pressure of the pressure regulating valve and, in turn, the pressure of the hydraulic oil in the gas cylinder connection group.

[0031] A quick connector B42 with a one-way valve is installed between the liquid outlet of each gas-liquid booster pump 3 and the gas cylinder connection group. When servicing any gas-liquid booster pump 3, the corresponding quick connector B42 with a one-way valve can be opened to disconnect the corresponding pipeline of the gas-liquid booster pump 3. When needed, the corresponding quick connector B42 with a one-way valve can be connected, which is convenient for use.

[0032] The industrial control computer 2 is also signal-connected to a temperature transmitter 21 mounted on the gas cylinder connection group. This temperature transmitter 21 monitors the outer wall temperature of the gas cylinders 10 in the gas cylinder connection group in real time and provides feedback to the industrial control computer 2, preventing accidents such as explosions caused by overheating of the gas cylinders 10 after prolonged use.

[0033] The inlet of the hydraulic pump 1 is connected to an oil tank 11, which is equipped with a filter 12, a liquid level gauge 13, a thermometer 14, and a cooler 15. The filter 12 is installed between the oil tank 11 and the hydraulic pump 1. The liquid level gauge 13, the thermometer 14, and the cooler 15 are connected to the industrial control computer 2. The hydraulic oil entering the hydraulic pump 1 can be filtered through the filter 12, the remaining oil in the oil tank 11 can be detected through the liquid level gauge 13, the real-time temperature of the hydraulic oil in the oil tank 11 can be detected through the thermometer 14, and the hydraulic oil can be cooled through the cooler 15.

[0034] A quick connector C43 with a check valve is installed between the hydraulic pump 1 and the liquid inlet of each gas-liquid booster pump 3. This quick connector C43 connects the hydraulic pump 1 to the liquid inlet of each gas-liquid booster pump 3. If any gas-liquid booster pump 3 is damaged, the quick connector C43 can be simply disconnected to cut off the pipeline corresponding to the damaged gas-liquid booster pump 3, making it easy to use.

[0035] A relief valve 16 is also installed on the pipeline between the hydraulic pump 1 and the gas-liquid booster pump 3. The pressure of the hydraulic oil entering the gas-liquid booster pump 3 is limited by the relief valve 16, and a pressure stabilizing effect is played at the same time.

[0036] In this embodiment, when in use, the gas cylinder 10 to be tested is connected via the quick connector A41 with a one-way valve, the hydraulic pump 1 is controlled to operate via the industrial control all-in-one computer 2, and the electromagnetic reversing valve 6 is controlled to move to the right position, so that the gas source 5 is connected to the air inlet of the gas-liquid booster pump 3. At this time, the gas-liquid booster pump 3 boosts the hydraulic oil pumped out by the hydraulic pump 1, thereby increasing the pressure of the hydraulic oil in the gas cylinder 10 to reach the test pressure;

[0037] After reaching the test pressure, the excess hydraulic oil pressure is discharged through the pressure regulating valve 72 and the pressure is maintained for a certain period of time. The pressure maintaining time is calculated from the time when the hydraulic oil in the gas cylinder 10 detected by the pressure transmitter 71 reaches the test pressure. After the pressure maintaining time is completed, the industrial control all-in-one computer 2 controls the electric proportional valve 720, thereby controlling the back pressure applied by the gas source 5 to the pressure regulating valve 72 through the electric proportional valve 720, so that the back pressure is reduced. At this time, the hydraulic oil in the gas cylinder 10 flows back to the oil cylinder through the pressure regulating valve 72 under the action of pressure, completing the pressure relief, thereby reducing the pressure of the hydraulic oil in the gas cylinder 10;

[0038] After the pressure relief is completed, the back pressure of the pressure regulating valve 72 is increased again, and the gas-liquid booster pump 3 boosts the pressure of the gas cylinder 10 again;

[0039] The above process is repeated to realize multiple pressure charging and depressurizing processes of the gas cylinder 10 and complete the fatigue test of the gas cylinder.

[0040] The above describes in detail the dual-power source gas cylinder fatigue test device provided by the present invention. The description of the specific embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A dual-power source gas cylinder fatigue test device, characterized by: The invention comprises a hydraulic pump (1), an industrial control integrated machine (2), a gas cylinder connection group and a plurality of gas-liquid booster pumps (3), wherein the plurality of gas-liquid booster pumps (3) are connected in parallel, the gas-liquid booster pumps (3) comprise a liquid inlet, a liquid outlet and an air inlet, the liquid inlet of the gas-liquid booster pump (3) is connected to the hydraulic pump (1), the liquid outlet of the gas-liquid booster pump (3) is connected to the gas cylinder connection group, the gas cylinder connection group comprises a plurality of parallel quick connectors A (41) with one-way valves, the air inlet of the gas-liquid booster pump (3) is connected to an air source (5), an electromagnetic reversing valve (6) is installed between the gas-liquid booster pump (3) and the air source (5), the gas cylinder connection group is further connected to a pressure transmitter (71) and a pressure regulating valve (72), and the industrial control integrated machine (2) is respectively connected to the hydraulic pump (1), the electromagnetic reversing valve (6) and the pressure transmitter (71) for signal transmission; The boosting ratios between the plurality of gas-liquid boosting pumps (3) are different; The pressure regulating valve (72) is connected to an electric proportional valve (720), the electric proportional valve (720) is in communication with an air source (5), and the industrial control all-in-one machine (2) is signal-connected to the electric proportional valve (720).

2. The dual-power source gas cylinder fatigue test device according to claim 1, characterized in that: A quick connector B (42) with a one-way valve is installed between the liquid outlet of each gas-liquid booster pump (3) and the gas cylinder connection group.

3. The dual-power source gas cylinder fatigue test device according to claim 1, characterized in that: The industrial control all-in-one machine (2) is also signal-connected to a temperature transmitter (21), and the temperature transmitter (21) is installed on the gas cylinder connection group.

4. The dual-power source gas cylinder fatigue test device according to claim 1, characterized in that: The inlet end of the hydraulic pump (1) is connected to an oil tank (11), and a filter (12), a liquid level meter (13), a thermometer (14) and a cooler (15) are provided in the oil tank (11). The filter (12) is installed between the oil tank (11) and the hydraulic pump (1), and the liquid level meter (13), the thermometer (14) and the cooler (15) are connected to the industrial control all-in-one computer (2) for signal transmission.

5. The dual-power source gas cylinder fatigue test device according to claim 1, characterized in that: A quick connector C (43) with a one-way valve is installed between the hydraulic pump (1) and the liquid inlet of each gas-liquid booster pump (3).

6. The dual-power source gas cylinder fatigue test device according to claim 1, characterized in that: An overflow valve (16) is also installed on the pipeline between the hydraulic pump (1) and the gas-liquid booster pump (3).

Images