On-line sampling device for hydrogen storage and transport device
Patent Information
- Application Number
- CN202521954575.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-11
AI Technical Summary
[0005]因此，本实用新型目的是提供氢气储运装置的在线取样装置，能够解决现有技术存在取样检测速度比较慢，存在安全隐患的问题
（1） 本实用新型通过减压阀将压力减至0.2mpa，不会使得巨大压力直接作用于取样钢瓶，更加安全，并且管道连接更容易进行放空和置换，管道连接至放空塔，更环保，设计中切换阀作用使得多处车位均可进行取样，更便捷。
Smart Images
Figure CN224744631U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydrogen storage and transportation technology, specifically relating to an online sampling device for hydrogen storage and transportation equipment. Background Technology
[0002] Hydrogen tubular vehicle is a specialized vehicle for transporting hydrogen. It consists of a high-pressure hydrogen pressure vessel or cylinder assembly, connecting pipes, valves, and safety devices, and is transported by road using a semi-trailer chassis. Online sampling refers to directly extracting representative hydrogen samples from the flowing pipeline during hydrogen transportation or dismantling to analyze whether its purity and impurity content meet quality standards. The traditional sampling procedure for hydrogen tubular vehicles involves connecting the sampling bottle's sampling interface to the valve port at the rear of the tubular vehicle, unscrewing it, opening the valves before and after the sampling bottle, slowly opening the tank truck valves until a gas flow sound is heard, and then purging and replacing the sampling bottle for 30-40 seconds. After the replacement is complete, first close the two valves at the tail of the sampling bottle. Then observe the pressure gauge on the sampling bottle. When the pressure gauge pointer rises to approximately 2.5 MPa, immediately close the tank truck valve. Finally, close the valve at the front of the sampling bottle to complete the sampling operation. Connect the sampling bottle interface to the analytical instrument, open the sampling bottle valve, and observe the sample pressure on the computer. When the sample pressure on the computer is between 0.3 and 0.4 MPa, quickly press the start button and close the injection valve on the sampling bottle. At this point, the chromatograph will begin analysis. After the analysis is complete, view the data in the spectral processing section. Click on the A channel spectral graph; the page will display the concentration corresponding to the component name in the analysis results. This method is relatively slow, and there is a safety concern that excessive internal pressure may damage the sampling bottle.
[0003] In summary, existing technologies suffer from slow sampling and detection speeds and pose safety risks. Utility Model Content
[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0005] Therefore, the purpose of this utility model is to provide an online sampling device for hydrogen storage and transportation devices, which can solve the problems of slow sampling and detection speed and safety hazards in the existing technology. This utility model provides an online sampling device for a hydrogen storage and transportation device. The online sampling device includes a sampling box. Two baffle joints are located on the upper side of one side of the sampling box, used for purging hydrogen and bypass discharge respectively, and a baffle joint below for sample gas inlet. Two baffle joints are located in the middle of the other side, used to lead to a safety zone and sample gas inlet respectively. The sample gas inlet baffle joint is connected to a pressure reducing valve, which is connected to a tee. One end of the tee is connected to a flow meter, and the other end is connected to a five-way valve. One end of the five-way valve is connected to the tee, and one end of the tee is connected to a ball valve. The other end of the ball valve is connected to a pressure reducing valve via a check valve. The other end of the pressure reducing valve is connected to the baffle joint for purging hydrogen via a ball valve. The other end of the tee is connected to another tee. A safety valve is installed on the tee, with its other end connected to the baffle joint for sample gas inlet via a ball valve. The other side of the safety valve is connected to the baffle joint for leading to the safety zone. The other end of the flow meter is connected to the baffle joint for bypass discharge.
[0006] Optionally, the diaphragm connector for sample gas is provided in four parts, which are respectively connected to pressure reducing valves and respectively connected to flow meters via tee valves. The flow meters are all connected to the diaphragm connector for bypass discharge, and the other end of the tee valve is connected to a five-way valve.
[0007] Optionally, the one-way valve is oriented from the diaphragm joint for purging hydrogen to the tee connected to the ball valve.
[0008] Optionally, the sampling box is a wall-mounted box.
[0009] Optionally, the sampling box is 100cm high and 80cm wide, and is made of aluminum.
[0010] In summary, this utility model has at least one of the following beneficial effects: (1) This utility model reduces the pressure to 0.2 MPa by using a pressure reducing valve, which prevents the huge pressure from acting directly on the sampling cylinder, making it safer. The pipeline connection makes it easier to vent and replace, and the pipeline is connected to the venting tower, which is more environmentally friendly. The switching valve in the design allows sampling to be carried out in multiple parking spaces, which is more convenient. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the online sampling device of the hydrogen storage and transportation device of this utility model; List of symbols in the attached diagram: 1. Baffle joint; 2. Check valve; 3. Ball valve; 4. Safety valve; 5. Five-way valve; 6. Three-way valve; 7. Pressure reducing valve; 8. Flow meter; 9. Sampling box. Implementation
[0013] The following is in conjunction with the appendix Figure 1 This utility model will be described in further detail below.
[0014] Example 1, refer to Figure 1 In this embodiment, to address the issues of slow sampling and detection speed and potential safety hazards in existing technologies, this utility model discloses an online sampling device for a hydrogen storage and transportation system. The device includes a sampling box 9. Two baffle joints 1 are located on the upper side of one side of the sampling box 9, used for purging hydrogen and bypassing emissions respectively, and a baffle joint 1 is located below for sample gas inlet. Two baffle joints 1 are located in the middle of the other side, used to lead to a safety zone and sample gas inlet respectively. The baffle joint 1 for sample gas inlet is connected to a pressure reducing valve 7, which is connected to a three-way valve 6. One end of the three-way valve 6 is connected to a flow meter 8, which detects the hydrogen flow rate. The pressure is controlled at 0.2 MPa by the pressure reducing valve 7 to avoid safety issues related to excessive pressure. The other end is connected to a five-way valve 5. Four baffle joints 1 are provided for sample gas inlet, each connected to a pressure reducing valve 7 and then to a flow meter 8 via a three-way valve 6. All flow meters 8 are connected to the baffle joints 1 used for bypass emissions. The other end of the three-way valve 6 is connected to the five-way valve 5. By setting up multiple sampling ports, multiple hydrogen storage and transportation devices located in different positions can be sampled by adjusting the five-way valve 5, which meets the needs of multi-position sampling and improves the efficiency of sampling and detection. The flow meter 8 can detect the hydrogen flow rate. When the flow rate is too high, the excess part is discharged through the bypass discharge baffle joint 1.
[0015] One end of the five-way valve 5 is connected to the three-way valve 6, one end of the three-way valve 6 is connected to the ball valve 3, the other end of the ball valve 3 is connected to the pressure reducing valve 7 through the one-way valve 2, and the other end of the pressure reducing valve 7 is connected to the diaphragm joint 1 for purging hydrogen through the ball valve 3. The direction of the one-way valve 2 is from the diaphragm joint 1 for purging hydrogen to the three-way valve 6 connected to the ball valve 3.
[0016] The other end of tee 6 is connected to another tee 6. Safety valve 4 is installed on tee 6, and its other end is connected to the baffle joint 1 for sample gas inlet via ball valve 3. The other side of safety valve 4 is connected to the baffle joint 1 for leading to the safety zone. The other end of flow meter 8 is connected to the baffle joint 1 for bypass discharge. Safety valve 4 is installed to prevent damage to subsequent testing equipment in case pressure regulator 7 fails, thus ensuring the device's safety. Sampling box 9 is a wall-mounted box. Sampling box 9 is 100cm high and 80cm wide, and is made of aluminum. It saves space and is more convenient to operate.
[0017] Specific implementation principle: Connect the sampling valve to the main filling valve of the hydrogen storage and transportation device and tighten it. After passing through the pressure reducing valve 7, the hydrogen reaches the three-way valve 6. Part of it enters the device through the sample gas diaphragm connector 1, and the other part is connected to the venting tower. Adjust the five-way valve 5 to select the appropriate port of the sample gas diaphragm connector 1. The flow meter 8 detects the internal hydrogen flow rate. When the flow rate is large, venting can be performed as needed to ensure the flow rate of gas entering the analysis chamber. Connect the analysis chamber and the sample gas inlet diaphragm connector 1. Slowly open the main valve of the tube bundle. Through the pressure reducing valve 7 and venting, make the outlet pressure greater than or equal to 0.45 MPa. Purge and replace for 10-15 minutes. After replacement, close the purging and open the chromatographic purging and replacement valve of the analysis chamber. Purge and replace for 8-10 minutes. After the chromatographic purging of the analysis chamber is completed, control the chromatographic flow rate at 20 L / H and purge for 2-3 minutes. Click the start button and then perform online analysis. Both replacement processes are completed outside the device. The device primarily uses pressure reducing valve 7 and flow meter 8 to vent hydrogen over a small area, ensuring flow rate and improving efficiency. If pressure reducing valve 7 malfunctions, safety valve 4 will vent when it reaches a safe value to prevent damage to the analysis chamber. Multiple sampling points are available, and adjustments are made via five-way valve 5. This significantly reduces piping, saving materials and time spent moving hydrogen storage and transportation equipment, thus improving sampling efficiency. This online sampling device can be directly connected to the analysis chamber, reducing manual intervention compared to using sampling bottles, and improving both accuracy and efficiency. The above describes the entire device's operation. Any content not described in detail in this specification is prior art known to those skilled in the art.
[0018] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. An on-line sampling device for a hydrogen storage and dispensing device, characterized by, The sample box (9) has two baffle joints (1) on the upper side of one side for purging hydrogen and bypassing, and a baffle joint (1) on the lower side for introducing sample gas. On the other side, two baffle joints (1) are located in the middle for leading to the safety zone and the sample gas inlet, respectively. The baffle joint (1) for introducing sample gas is connected to the pressure reducing valve (7), the pressure reducing valve (7) is connected to the tee (6), one end of the tee (6) is connected to the flow meter (8), and the other end is connected to the five-way valve (5). One end of the five-way valve (5) is connected to the tee (6), and one end of the tee (6) is connected to the ball valve. (3) Connected, the other end of the ball valve (3) is connected to the pressure reducing valve (7) via the check valve (2), the other end of the pressure reducing valve (7) is connected to the diaphragm joint (1) for purging hydrogen via the ball valve (3), the other end of the tee (6) is connected to another tee (6), the safety valve (4) is set on the tee (6), the other end is connected to the diaphragm joint (1) for sample gas inlet via the ball valve (3), the other side of the safety valve (4) is connected to the diaphragm joint (1) for leading to the safety zone, and the other end of the flow meter (8) is connected to the diaphragm joint (1) for bypass discharge.
2. The online sampling device for a hydrogen storage and transportation system according to claim 1, characterized in that, The partition joint (1) is provided with four for the sample gas, which are respectively connected to the pressure reducing valve (7) and respectively connected to the flow meter (8) through the tee (6). The flow meter (8) is connected to the partition joint (1) for bypass discharge. The other end of the tee (6) is connected to the five-way valve (5).
3. The on-line sampling device for hydrogen storage and delivery apparatus of claim 1, wherein, The direction of the one-way valve (2) is from the diaphragm joint (1) for purging hydrogen to the tee (6) connected to the ball valve (3).
4. The on-line sampling device for hydrogen storage and delivery apparatus of claim 1, wherein, The sampling box (9) is a wall-mounted box.
5. The on-line sampling device for hydrogen storage and delivery apparatus of claim 4, wherein, The sampling box (9) is 100cm high and 80cm wide, and is made of aluminum.