Movable sampling system for fuel cell hydrogen sampling

Abstract

The utility model relates to the technical field of fuel hydrogen sampling, and discloses a movable sampling system for fuel cell hydrogen sampling, which comprises a gas source gas receiving port module, a pressure monitoring module, a gas cylinder sampling module and a safety guarantee module, the gas source gas receiving port module comprises a first hydrogenation gun gas receiving pipe, a second hydrogenation gun gas receiving pipe and a third gas receiving pipe, and the pressure monitoring module comprises a gas source pressure gauge, a pressure regulator, an output pressure gauge, a four-way pipe fitting, a bypass valve, a pressure release valve, a check valve and an inlet valve. The gas cylinder sampling module comprises a first quick-plug connector, an access valve, a sampling gas cylinder, an outlet valve, a second quick-plug connector and an outlet valve, and the safety guarantee module comprises a small battery pile, a drain pipe, a fan, a storage battery and a grounding wire. According to the movable sampling system for fuel cell hydrogen sampling, the hydrogen sampling equipment can meet the use of various sampling stations, and meanwhile, waste gas hydrogen replaced in the sampling process is effectively and safely solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel hydrogen sampling, in particular to a movable sampling system for fuel cell hydrogen sampling. Background Art

[0002] Hydrogen quality assurance is a basic condition for the healthy development and large-scale application of the hydrogen energy and fuel cell vehicle industry. At present, the types and concentrations of impurities in hydrogen are determined by many factors, including hydrogen preparation raw materials, process methods, purification technology, transportation methods, filling equipment and processes, and operational norms. In order to ensure the long-term and efficient operation of proton exchange membrane fuel cell vehicles, relevant standards have strictly regulated the purity and impurity content of hydrogen. Among them, there are many types of impurities with low content, and high requirements are placed on detection equipment and methods.

[0003] Sample collection is the primary task before trace sample detection. Currently, hydrogen sample sampling is mainly based on the preparation of corresponding sampling equipment determined by the hydrogen sample sampling site, which leads to the lack of universality of the sampling device. Therefore, it is necessary to combine the existing characteristics of the hydrogen refueling gun to make the sampling equipment adaptable to sampling under multiple conditions. In addition, there are multiple hydrogen replacements in each batch of hydrogen sample collection, which makes hydrogen discharge the focus of safety control. Since hydrogen is a hazardous chemical, it is prohibited to discharge it at will. Generally, it is emptied, which leads to a decrease in the utilization rate of hydrogen and a high risk factor. Therefore, a movable sampling system for fuel cell hydrogen sampling is urgently needed to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a movable sampling system for fuel cell hydrogen sampling, which has the advantages of high utilization rate, etc., and solves the problem that hydrogen is a hazardous chemical and is prohibited from being discharged at will. It is generally discharged, which leads to reduced hydrogen utilization and a high risk factor.

[0006] (II) Technical solution

[0007] The utility model solves the above-mentioned technical problems with the following technical solutions: a movable sampling system for hydrogen sampling in a fuel cell, comprising a gas source receiving port module, a pressure monitoring module, a gas cylinder sampling module and a safety assurance module, wherein the gas source receiving port module comprises a first hydrogenation gun receiving pipe, a second hydrogenation gun receiving pipe and a third receiving pipe, the pressure monitoring module comprises a gas source pressure gauge, a pressure regulator, an output pressure gauge, a four-way pipe fitting, a bypass valve, a pressure relief valve, a check valve and an inlet valve, the gas cylinder sampling module comprises a first quick-plug connector, an access valve, a sampling gas cylinder, an outlet valve, a second quick-plug connector and an outlet valve, and the safety assurance module comprises a small battery stack, a drain pipe, a fan, a battery and a grounding wire.

[0008] The beneficial effects of the utility model are:

[0009] The movable sampling system for fuel cell hydrogen sampling enables the hydrogen sample sampling equipment to meet the use of various sampling sites, while effectively and safely solving the problem of waste gas hydrogen displaced during the sampling process.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the first control valve, the second control valve and the third control valve are fixedly installed on the outside of the first hydrogenation gun gas receiving pipe, the second hydrogenation gun gas receiving pipe and the third gas receiving pipe respectively, and the first hydrogenation gun gas receiving pipe, the second hydrogenation gun gas receiving pipe and the third gas receiving pipe are all fixedly connected with a first connecting pipeline, and the first connecting pipeline is fixedly connected to the four-way pipe fitting.

[0012] Furthermore, the gas source pressure gauge, the pressure regulator and the output pressure gauge are all installed outside the first connecting pipeline.

[0013] Furthermore, one end of the four-way pipe fitting is fixedly connected to a second connecting pipeline, and the inlet valve and the gas cylinder sampling module are both installed on the second connecting pipeline.

[0014] Furthermore, one end of the four-way pipe fitting is fixedly connected to a third connecting pipeline, the pressure relief valve is fixedly installed on the third connecting pipeline, one end of the four-way pipe fitting is fixedly connected to a fourth connecting pipeline, the third connecting pipeline is connected to the second connecting pipeline, and the second connecting pipeline is connected to the fourth connecting pipeline.

[0015] Furthermore, the bypass valve and the check valve are fixedly installed on a fourth connecting pipeline, and the fourth connecting pipeline is connected to the safety assurance module.

[0016] Furthermore, the drainage pipe is fixedly installed at the bottom of the small battery stack, the small battery stack is connected to a battery power supply, and the fan is fixedly installed inside the small battery stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural flow chart of the utility model.

[0018] In the figure: 101, first hydrogenation gun gas receiving pipe; 102, second hydrogenation gun gas receiving pipe; 103, third gas receiving pipe; 104, first control valve; 105, second control valve; 106, third control valve; 201, gas source pressure gauge; 202, pressure regulator; 203, output pressure gauge; 204, four-way pipe fitting; 205, bypass valve; 206, pressure relief valve; 207, check valve; 208, inlet valve; 301, outlet valve; 302, second quick-connect connector; 303, outlet valve; 304, sampling gas cylinder; 305, access valve; 306, first quick-connect connector; 401, small battery stack; 402, drain pipe; 403, fan; 404, battery; 405, ground wire. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the embodiment, Figure 1 A movable sampling system for hydrogen sampling of a fuel cell is provided. The utility model comprises a gas source receiving port module, a pressure monitoring module, a gas cylinder sampling module and a safety assurance module. The gas source receiving port module comprises a first hydrogenation gun gas receiving pipe 101, a second hydrogenation gun gas receiving pipe 102 and a third gas receiving pipe 103.

[0021] The first hydrogenation gun gas receiving pipe 101 is the gas receiving port corresponding to the hydrogenation gun TK 17, which meets the low flow sampling of 35MPa and 70MPa. The second hydrogenation gun gas receiving pipe 102 is the gas receiving port corresponding to the hydrogenation gun TK 25, which meets the high flow sampling of 35MPa. The third gas receiving pipe 103 is the sampling port corresponding to the hydrogen production plant.

[0022] The pressure monitoring module includes a gas source pressure gauge 201, a pressure regulator 202, an output pressure gauge 203, a four-way pipe fitting 204, a bypass valve 205, a pressure relief valve 206, a check valve 207 and an inlet valve 208. The bypass valve 205 cooperates with the required pressure control, and the pressure relief valve 206 is mainly used for the completion of sampling of the batch of samples, and the remaining high-pressure gas in the entire pipeline system is quickly discharged.

[0023] The first hydrogenation gun gas receiving pipe 101, the second hydrogenation gun gas receiving pipe 102 and the third gas receiving pipe 103 are respectively fixedly installed with the first control valve 104, the second control valve 105 and the third control valve 106. The first hydrogenation gun gas receiving pipe 101, the second hydrogenation gun gas receiving pipe 102 and the third gas receiving pipe 103 are all fixedly connected with the first connecting pipeline, and the first connecting pipeline is fixedly connected to the four-way pipe fitting 204.

[0024] The gas source pressure gauge 201, the pressure regulator 202 and the output pressure gauge 203 are all installed outside the first connecting pipeline.

[0025] The gas cylinder sampling module includes a first quick-plug connector 306, an access valve 305, a sampling gas cylinder 304, an outlet valve 303, a second quick-plug connector 302 and an outlet valve 301. One end of the four-way pipe fitting 204 is fixedly connected to a second connecting pipeline, and the inlet valve 208 and the gas cylinder sampling module are both installed on the second connecting pipeline.

[0026] The access valve 305, the sampling gas cylinder 304, and the outlet valve 303 form a double valve control, which is convenient for the sampling bottle to replace other gases remaining in the bottle. In addition, the entire connection line of the gas source receiving port module, the pressure monitoring module and the gas cylinder sampling module generally adopts high-pressure resistant pipes. The sampling gas cylinder 304 generally adopts a type IV bottle with a volume of 8L and a pressure resistance of more than 35MPa. At the same time, the inside of the sampling bottle is passivated according to the trace impurity requirements.

[0027] The safety assurance module includes a small battery stack 401, a drain pipe 402, a fan 403, a battery 404 and a grounding wire 405. The bypass valve 205 and the check valve 207 are fixedly installed on the fourth connecting pipeline. The fourth connecting pipeline is connected to the safety assurance module. The drain pipe 402 is fixedly installed at the bottom of the small battery stack 401. The small battery stack 401 is connected to the battery 404 power supply. The fan 403 is fixedly installed inside the small battery stack 401.

[0028] The small battery stack 401 is mainly used to consume hydrogen, and the current it generates is stored by connecting to the battery terminal. The grounding wire 405 is mainly used to eliminate the static electricity that may be generated during the sampling process. The battery 404 is generally a lithium battery, alkaline battery or nickel-metal hydride battery and other batteries that meet the requirements. The fan 403 is mainly used to blow air into the stack to generate a reaction.

[0029] One end of the four-way pipe fitting 204 is fixedly connected to the third connecting pipeline, and the pressure relief valve 206 is fixedly installed on the third connecting pipeline. One end of the four-way pipe fitting 204 is fixedly connected to the fourth connecting pipeline. The third connecting pipeline is connected to the second connecting pipeline, and the second connecting pipeline is connected to the fourth connecting pipeline. The setting of the pressure relief valve 206 facilitates pressure relief to discharge hydrogen.

[0030] Working principle:

[0031] The gas source air receiving port module selects the corresponding air receiving port according to the sampling site, determines the air receiving port involved in the sampling, and keeps other corresponding air receiving ports closed. Then, the pipeline of the corresponding gas source air receiving port module is connected to the pressure monitoring module to determine the pressure of each pipeline in the whole system. At the same time, it ensures that the required sampling pressure is met in the sampling gas cylinder 304 in the sampling bottle module during the sampling process. During the sampling process, the discharged hydrogen is first replaced, and the discharged gas is connected to the small battery stack 401 in the safety assurance module, and the generated current is connected to the battery 404 to store the generated current.

[0032] Specifically, the working state of the entire system is determined by the gas receiving port corresponding to the hydrogenation gun TK 17 under the condition of a low flow rate of 35MPa. Before each module is connected to each other, the internal connections of each submodule are in a complete and sealed state. The four modules are connected intactly and each connection part is tightly fixed.

[0033] Before filling the sample, based on the residual non-sample gas in the sample bottle, the entire system generally needs to be purged first. During inflation and purging, the access valve 305 and the outlet valve 303 at both ends of the gas cylinder are in the ON state, so that the entire passage from the corresponding gas receiving pipe, control valve, pressure regulator 202, inlet valve 208, and the access valve 305 and the outlet valve 303 at both ends of the connected gas cylinder, and the check valve 207 are connected, and at the same time, the small battery stack 401 is ensured to be in working condition at the beginning, wherein the pressure of the pressure regulator 202 is generally controlled below 10MPa, and the purging time is not less than 120s. When the connected sampling bottle is a single-mouth bottle, it is replaced through inflation and deflation mode, and the number of replacements is not less than 10 times to ensure that there is no residual gas interference.

[0034] After completing the system purge, determine to sample through the hydrogenation gun gas pipe, determine that the corresponding control valve is in the ON state, and other control valves are in the OFF state. The pressure monitoring module first adjusts the pressure regulator to the required pressure value, generally set to 6.9MPa, the inlet valve 208 in the pressure monitoring module is in the ON state, and other valves are in the off state. The sampling gas cylinder access valve 305 in the gas cylinder sampling module is in the ON state, and the sampling gas cylinder outlet valve 303 is in the OFF state. Determine that the status of each module is in the target state, wait for the output pressure gauge 203 to stabilize, and start hydrogen sample filling.

[0035] After the sampling is completed, make sure that the access valve 305 is in the OFF state, the corresponding gas receiving pipe is in the OFF state, the corresponding control valve and inlet valve 208 remain in the ON state, open the bypass valve 205 to remove the hydrogen in the pipeline, and after 5 seconds, close all valves in the entire system so that all valves are in the off state, and finally stop the operation of the small battery stack 401.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile sampling system for hydrogen sampling of fuel cells, comprising a gas source receiving port module, a pressure monitoring module, a gas cylinder sampling module and a safety assurance module, characterized in that: The gas source receiving port module comprises a first hydrogenation gun receiving pipe (101), a second hydrogenation gun receiving pipe (102) and a third receiving pipe (103); the pressure monitoring module comprises a gas source pressure gauge (201), a pressure regulator (202), an output pressure gauge (203), a four-way pipe fitting (204), a bypass valve (205), a pressure relief valve (206), a check valve (207) and an inlet valve (208); the gas cylinder sampling module comprises a first quick-connect connector (306), an access valve (305), a sampling gas cylinder (304), an outlet valve (303), a second quick-connect connector (302) and an outlet valve (301); and the safety assurance module comprises a small battery stack (401), a drain pipe (402), a fan (403), a battery (404) and a grounding wire (405).

2. A mobile sampling system for fuel cell hydrogen sampling according to claim 1, characterized in that: A first control valve (104), a second control valve (105) and a third control valve (106) are fixedly installed on the outside of the first hydrogenation gun gas receiving pipe (101), the second hydrogenation gun gas receiving pipe (102) and the third gas receiving pipe (103), respectively. The first hydrogenation gun gas receiving pipe (101), the second hydrogenation gun gas receiving pipe (102) and the third gas receiving pipe (103) are all fixedly connected with a first connecting pipeline, and the first connecting pipeline is fixedly connected to a four-way pipe fitting (204).

3. A movable sampling system for fuel cell hydrogen sampling according to claim 2, characterized in that: The gas source pressure gauge (201), the pressure regulator (202) and the output pressure gauge (203) are all installed outside the first connecting pipeline.

4. A movable sampling system for fuel cell hydrogen sampling according to claim 1, characterized in that: One end of the four-way pipe fitting (204) is fixedly connected to a second connecting pipeline, and the inlet valve (208) and the gas cylinder sampling module are both installed on the second connecting pipeline.

5. A movable sampling system for fuel cell hydrogen sampling according to claim 4, characterized in that: One end of the four-way pipe fitting (204) is fixedly connected to a third connecting pipeline, the pressure relief valve (206) is fixedly installed on the third connecting pipeline, one end of the four-way pipe fitting (204) is fixedly connected to a fourth connecting pipeline, the third connecting pipeline is connected to the second connecting pipeline, and the second connecting pipeline is connected to the fourth connecting pipeline.

6. A movable sampling system for fuel cell hydrogen sampling according to claim 5, characterized in that: The bypass valve (205) and the check valve (207) are fixedly installed on a fourth connecting pipeline, and the fourth connecting pipeline is connected to the safety guarantee module.

7. A movable sampling system for fuel cell hydrogen sampling according to claim 1, characterized in that: The drainage pipe (402) is fixedly installed at the bottom of the small battery stack (401), the small battery stack (401) is connected to a storage battery (404) power supply, and the fan (403) is fixedly installed inside the small battery stack (401).

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