A high-purity hydrogen tube bundle vehicle filling device

Abstract

The utility model relates to a kind of high-purity hydrogen pipe bundle truck filling device, the import pipeline of pressure swing adsorption unit is connected with high-purity hydrogen source, and regulating valve is equipped on the outlet pipeline of pressure swing adsorption unit;The import pipeline of compressor is connected with the outlet pipeline of pressure swing adsorption unit, and import cut-off valve is equipped on the import pipeline of compressor, and outlet cut-off valve is equipped on the outlet pipeline of compressor;Reflux pipeline is connected between the import pipeline and outlet pipeline of compressor, and reflux cut-off valve is equipped on the reflux pipeline.The outlet pipeline of compressor is connected with filling column unit, and pressure sensor is equipped on filling column unit;Filling column unit is connected with filling vehicle and supplies gas.Control system is signal connected with pressure sensor, regulating valve, import cut-off valve, outlet cut-off valve and reflux cut-off valve.The high-purity hydrogen pipe bundle truck filling device solves the problem of valve switch sequence error, avoids overpressure, hydrogen leakage, static fire or flash explosion problem in hydrogen filling process.

Description

Technical Field

[0001] This utility model relates to the field of gas supply equipment technology, and in particular to a high-purity hydrogen tube bundle vehicle filling device. Background Technology

[0002] Traditional high-purity hydrogen tube bundle vehicle filling devices typically consist of a hydrogen purification and refining system, a gas pressurization system (such as a compressor), and a gas filling column. The filling process involves high pressure (approximately 200 kgf / cm²), and due to the numerous valves and complex operating procedures, multiple operators are required to manually monitor and operate the valves. Therefore, traditional high-purity hydrogen filling methods are prone to the following problems: Manual valve control and operation can easily lead to incorrect valve opening and closing sequences, resulting in system overpressure, hydrogen leakage, static electricity ignition, or flash explosion. Furthermore, the compressor inlet pressure of existing high-purity hydrogen tube bundle vehicle filling devices cannot be stabilized, requiring timely manual valve adjustment, which is labor-intensive and involves hydrogen venting during adjustment, resulting in resource waste. Utility Model Content

[0003] This invention addresses the technical problems in existing technologies, such as complex and error-prone operation steps during hydrogen tube bundle vehicle filling, which can easily lead to serious safety hazards, and the inability to stabilize the compressor inlet pressure, resulting in hydrogen venting. It provides a high-purity hydrogen tube bundle vehicle filling device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A high-purity hydrogen tube bundle vehicle filling device includes: a pressure swing adsorption unit, a compressor, a filling column unit, and a control system; The inlet pipe of the pressure swing adsorption unit is connected to a high-purity hydrogen source, and the outlet pipe of the pressure swing adsorption unit is equipped with a regulating valve for stabilizing the outlet pressure. The compressor's inlet pipe is connected to the outlet pipe of the pressure swing adsorption unit. The compressor's inlet pipe is equipped with an inlet shut-off valve, and the compressor's outlet pipe is equipped with an outlet shut-off valve. A return pipe is connected between the compressor's inlet pipe and outlet pipe, and a return shut-off valve is equipped on the return pipe. The compressor's outlet pipe is connected to the filling column unit, which is equipped with a pressure sensor for detecting filling pressure; the filling column unit is connected to the filling vehicle and supplies gas. The control system is connected to the pressure sensor, regulating valve, inlet shut-off valve, outlet shut-off valve and reflux shut-off valve, and is used to automatically control the opening and closing of each valve and the start and stop of the compressor according to a preset program.

[0005] Furthermore, the regulating valve is a self-operated regulating valve or an electric regulating valve.

[0006] Furthermore, the inlet shut-off valve, outlet shut-off valve, and reflux shut-off valve are pneumatic shut-off valves or electric shut-off valves.

[0007] Furthermore, the control system includes a programmable logic controller or a distributed control system.

[0008] Furthermore, it also includes: an audible and visual alarm; the audible and visual alarm is connected to the control system and is used to issue an alarm when the filling pressure is abnormal or the equipment malfunctions.

[0009] Furthermore, the filling column unit is also equipped with a second pressure sensor for redundant monitoring of the filling process.

[0010] Compared with the prior art, the high-purity hydrogen tube bundle vehicle filling device provided by this utility model has at least the following beneficial effects or advantages: The high-purity hydrogen tube bundle vehicle filling device provided by this utility model has a control system that is connected to a pressure sensor, regulating valve, inlet shut-off valve, outlet shut-off valve, and reflux shut-off valve. It can automatically control the opening and closing of each valve and the start and stop of the compressor according to a preset program, solving the problem of incorrect valve opening and closing sequence and avoiding problems such as overpressure, hydrogen leakage, static electricity ignition, or flash explosion during hydrogen filling. The outlet pipeline of the pressure swing adsorption unit in this high-purity hydrogen tube bundle vehicle filling device is equipped with a regulating valve to stabilize the outlet pressure, ensuring stable compressor inlet pressure and eliminating the need for hydrogen venting, thus avoiding hydrogen waste. Attached Figure Description

[0011] Figure 1 A schematic diagram of the high-purity hydrogen tube bundle vehicle filling device provided for an embodiment of this utility model. Detailed Implementation

[0012] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0014] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0015] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0016] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0017] This utility model provides a high-purity hydrogen tube bundle vehicle filling device, including: a pressure swing adsorption (PSA) unit 100, a compressor 200, a filling column unit 300, and a control system. The inlet pipe of the PSA unit 100 is connected to a raw material gas (high-purity hydrogen) source, and the outlet pipe of the PSA unit 100 is equipped with a regulating valve 1 for stabilizing the outlet pressure. The regulating valve 1 is a self-operated regulating valve or an electrically operated regulating valve. The inlet pipe of the compressor 200 is connected to the outlet pipe of the PSA unit 100. The inlet pipe of the compressor 200 is equipped with an inlet shut-off valve 2, and the outlet pipe of the compressor 200 is equipped with an outlet shut-off valve 3. A reflux pipe is connected between the inlet pipe and the outlet pipe of the compressor 200, and a reflux shut-off valve 4 is equipped on the reflux pipe. The inlet shut-off valve 2, the outlet shut-off valve 3, and the reflux shut-off valve 4 are pneumatic shut-off valves or electrically operated shut-off valves. The inlet pipe of compressor 200 and the vent pipe of pressure swing adsorption unit 100 are pressure-linked through regulating valve 1, so that high-purity hydrogen can be returned to the system after regulation during non-filling periods, reducing venting losses.

[0018] The outlet pipe of the compressor 200 is connected to the filling column unit 300, and the filling column unit 300 is equipped with a pressure sensor 5 for detecting the filling pressure; the filling column unit 300 is connected to the filling vehicle and supplies gas.

[0019] The control system is connected to pressure sensor 5, regulating valve 1, inlet shut-off valve 2, outlet shut-off valve 3, and reflux shut-off valve 4 for signal connection. It is used to automatically control the opening and closing of each valve and the start and stop of compressor 200 according to a preset program. The control system includes a programmable logic controller or a distributed control system.

[0020] In a preferred embodiment of this utility model, it further includes: an audible and visual alarm; the audible and visual alarm is connected to the control system and is used to issue an alarm when the filling pressure is abnormal or the equipment malfunctions. The filling column unit 300 is also provided with a second pressure sensor for redundant monitoring of the filling process.

[0021] The filling process of the high-purity hydrogen tube bundle vehicle filling device provided in this embodiment of the invention is as follows: The control system first sends an opening signal to the outlet shut-off valve 3 and the return shut-off valve 4. Both valves open simultaneously. After confirming that both outlet shut-off valve 3 and return shut-off valve 4 are fully open (this can be confirmed by feedback signals from the valve limit switches), the control system sends a start command to the motor of compressor 201. At this time, compressor 200 starts running, but because inlet shut-off valve 2 is not yet closed and the return pipeline is unobstructed, the compressor is actually running unloaded in a near-zero pressure differential circulation loop. This greatly reduces the starting current of the motor and the impact on mechanical components, which is beneficial for the long-term stable operation of the equipment.

[0022] After the compressor 200 successfully starts and operates stably for a short preset delay (e.g., 5 seconds), the control system sends a closing signal to the inlet shut-off valve 2. The closing of the inlet shut-off valve 2 cuts off the direct gas extraction path from the pressure swing adsorption unit, forcing the compressor to begin compressing the gas present in the return and outlet lines. The compressed hydrogen flows through the outlet shut-off valve 3 to the filling column unit 300 to fill the tube bundle vehicle.

[0023] The high-purity hydrogen tube bundle vehicle filling device provided in this embodiment of the utility model has at least the following beneficial effects or advantages: The high-purity hydrogen tube bundle vehicle filling device provided in this embodiment has a control system that is connected to a pressure sensor, regulating valve, inlet shut-off valve, outlet shut-off valve, and reflux shut-off valve. It can automatically control the opening and closing of each valve and the start and stop of the compressor according to a preset program, solving the problem of incorrect valve opening and closing sequence and avoiding problems such as overpressure, hydrogen leakage, static electricity ignition, or flash explosion during hydrogen filling. The outlet pipeline of the pressure swing adsorption unit in this high-purity hydrogen tube bundle vehicle filling device is equipped with a regulating valve to stabilize the outlet pressure, ensuring stable compressor inlet pressure and eliminating the need for hydrogen venting, thus avoiding hydrogen waste.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-purity hydrogen tube bundle vehicle filling device, characterized in that, include: Pressure swing adsorption unit (100), compressor (200), filling column unit (300) and control system; The inlet pipe of the pressure swing adsorption unit (100) is connected to a high-purity hydrogen source, and the outlet pipe of the pressure swing adsorption unit (100) is provided with a regulating valve (1) for stabilizing the outlet pressure. The inlet pipe of the compressor (200) is connected to the outlet pipe of the pressure swing adsorption unit (100). An inlet shut-off valve (2) is provided on the inlet pipe of the compressor (200), and an outlet shut-off valve (3) is provided on the outlet pipe of the compressor (200). A return pipe is connected between the inlet pipe and the outlet pipe of the compressor (200), and a return shut-off valve (4) is provided on the return pipe. The outlet pipe of the compressor (200) is connected to the filling column unit (300), and the filling column unit (300) is provided with a pressure sensor (5) for detecting the filling pressure; the filling column unit (300) is connected to the filling vehicle and supplies gas; The control system is connected to the pressure sensor (5), regulating valve (1), inlet shut-off valve (2), outlet shut-off valve (3) and reflux shut-off valve (4) for automatically controlling the opening and closing of each valve and the start and stop of the compressor (200) according to a preset program.

2. The high-purity hydrogen tube bundle vehicle filling device according to claim 1, characterized in that: The regulating valve (1) is a self-operated regulating valve or an electric regulating valve.

3. The high-purity hydrogen tube bundle vehicle filling device according to claim 1, characterized in that: The inlet shut-off valve (2), outlet shut-off valve (3), and reflux shut-off valve (4) are pneumatic shut-off valves or electric shut-off valves.

4. The high-purity hydrogen tube bundle vehicle filling device according to claim 1, characterized in that: The control system includes a programmable logic controller or a distributed control system.

5. The filling device according to any one of claims 1-4, characterized in that: Also includes: An audible and visual alarm; the audible and visual alarm is connected to the control system and is used to issue an alarm when the filling pressure is abnormal or the equipment malfunctions.

6. The filling device according to any one of claims 1-4, characterized in that: The filling column unit (300) is also provided with a second pressure sensor for redundant monitoring of the filling process.

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