CN206496183U - A 35MPa high-pressure hydrogen storage system - Google Patents

Abstract

The utility model is related to a kind of 35MPa high-pressure hydrogen storings system, including multiple gas cylinders, the gas cylinder is used to store high pressure hydrogen, the multiple gas cylinder is provided with combination valve, the import and export of each combination valve are connected with respective pressure duct, overflow valve is provided with every pressure duct, is connected after a plurality of pressure duct convergence with output pipe, needle-valve is provided with the output pipe；The output pipe is connected with output gas joint.The utility model is applied to the vehicles of configuration fuel battery engines.

Description

A 35MPa high-pressure hydrogen storage system

technical field

The utility model relates to the technical field of gas supply, in particular to a 35MPa high-pressure hydrogen storage system.

Background technique

At present, automobiles mainly consume petroleum resources, which will pollute the environment, and because petroleum is a non-renewable resource, its reserves are limited. Searching for new modern energy has become a development trend, so there is a natural gas supply system for vehicles, which consists of special vehicle low-temperature insulation bottles, filling ports, safety current limiting devices, LNG vaporizers, voltage regulators, pressure displays and other devices . When supplying gas, the pressure inside the LNG storage bottle is always higher than the intake pressure required by the engine, so the outlet pressure of the pressure regulating valve on the gas supply pipeline is set to be 0.05-0.1 MPa higher than the intake pressure required by the engine. In order to maintain the pressure in the cylinder higher than the intake pressure of the engine, the following two methods are usually adopted: 1. The gas cylinder does not have self-pressurization, and the gas filling station heats the stored LNG to make its saturated vapor pressure reach the pressure required by the engine. Since this method needs to adjust the saturated vapor pressure according to the LNG temperature, it is very inconvenient. 2. The gas cylinder has its own pressurization. After LNG is filled into the vehicle bottle, it will be self-pressurized until it is higher than the intake pressure of the engine, and the pressure will be automatically stabilized. Due to the addition of a supercharger and a voltage stabilizer, the entire system will The volume becomes larger.

Due to the inconvenient use of natural gas, fuel cell systems are gradually replacing natural gas as a new resource. The existing fuel cell system mainly uses hydrogen as energy. When hydrogen is used as the gas supply system, the existing natural gas supply system cannot be directly applied to hydrogen. In the gas supply system, a 35MPa high-pressure hydrogen storage system is urgently needed.

Utility model content

The technical problem to be solved by the utility model is to provide a 35MPa high-pressure hydrogen storage system, which is suitable for vehicles equipped with fuel cell engines.

The technical scheme adopted by the utility model to solve the technical problem is: provide a 35MPa high-pressure hydrogen storage system, including a plurality of gas cylinders, the gas cylinders are used to store high-pressure hydrogen, and the plurality of gas cylinders are all equipped with combination valves , the inlet and outlet of each combination valve are connected with their respective high-pressure pipelines, each high-pressure pipeline is equipped with a relief valve, and multiple high-pressure pipelines are connected to the output pipeline after converging, and the output pipeline is provided with a needle valve; the output pipeline is connected with the output gas connector.

After the multiple high-pressure pipelines converge, they are also connected to the gas filling pipeline. A check valve is arranged on the gas filling pipeline, and the gas filling pipeline is connected to the gas filling joint.

A filter is also arranged on the gas filling pipeline, and the filter is used for filtering impurities in the gas.

The combination valve is provided with a pressure sensor interface, and a pressure sensor is installed on the pressure sensor interface.

The combined valve is provided with two inlets and outlets, one of which is connected to a high-pressure pipeline, and the other inlet and outlet is connected to a low-pressure pipeline, and the low-pressure pipeline is connected to an exhaust port.

A temperature sensor is integrated inside the combination valve, and the temperature sensor is used to detect the temperature in the bottle.

Beneficial effect

Due to the adoption of the above-mentioned technical solution, the utility model has the following advantages and positive effects compared with the prior art: the utility model realizes that a plurality of gas cylinders are connected in series through high-pressure pipelines and the final output is realized as a fuel cell engine. The vehicle supplies gas, and the outlet end of the combination valve of each gas cylinder in the whole system is connected with the overflow valve, which can prevent a large amount of gas from leaking out when the downstream pipeline breaks. A one-way valve is installed on the gas filling pipeline, so that the gas can be automatically opened under pressure during inflation, without manual switch. When the inflation volume reaches the rated pressure, the inflation will stop and the one-way valve will be closed.

Description of drawings

Fig. 1 is a schematic diagram of the utility model;

Fig. 2 is a structural representation of the utility model.

detailed description

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

The embodiment of the present utility model relates to a 35MPa high-pressure hydrogen storage system, as shown in Fig. 1 and Fig. Combination valves 2 are provided, and the inlet and outlet of each combination valve 2 are connected with their own high-pressure pipelines 3, and each high-pressure pipeline 3 is equipped with a relief valve 4, and the three high-pressure pipelines 3 are connected to the output pipeline 5, the output pipeline 5 is provided with a needle valve 6, and the needle valve 6 is used to control the on-off of the pipeline; the output pipeline 5 is connected with the output gas joint 7. After the three high-pressure pipelines 3 converge, they are also connected to the gas filling pipeline 8 . The gas filling pipeline 8 is provided with a check valve 9 , and the gas filling pipeline 8 is connected to the gas filling joint 10 . A one-way valve 9 is installed on the gas filling pipeline 8, so that the gas can be automatically opened under pressure during inflation, without manual switch. When the inflation volume reaches the rated pressure, the inflation stops and the one-way valve 9 closes. A filter 11 is also provided on the gas filling pipeline 8, and the filter 11 is used to filter impurities in the gas.

In this embodiment, the working pressure of gas cylinder 1 is 35MPa, the weight is 43Kg, the test pressure is 52.5MPa, and the burst pressure is 84MPa. The inner tank is made of 6061 aluminum alloy. 74L.

The gas cylinder 1 is provided with a combined valve 2, and the combined valve 2 has four ports, including two inlets and outlets, one inlet and outlet connected to the high-pressure pipeline 3, and the other inlet and outlet connected to the low-pressure pipeline 13. The low-pressure pipeline 13 is connected with the exhaust port 14, and the other is a pressure sensor port, and a pressure sensor 12 is installed on the pressure sensor port, and the pressure sensor 12 is used to measure the pressure of the gas in the system. The last interface is a spare port, which can be blocked with a plug at ordinary times. A temperature sensor is integrated inside the combination valve 2, and the temperature sensor is used to detect the temperature in the bottle. When the temperature of the bottle body reaches a threshold value, the valve can be automatically opened to discharge.

The pressure sensor adopts the American AST2000 industrial pressure sensor and is installed on the combination valve. It can generate a linearly proportional electrical signal according to the pressure change in the gas cylinder and transmit it to the instrument for display. The input voltage is 5V, and the output signal is a voltage signal, 0.5 V ~ 4.5V proportional output.

It is not difficult to find that in the utility model, multiple gas cylinders are connected in series through high-pressure pipelines and finally output to realize gas supply for vehicles equipped with fuel cell engines. The flow valve is connected to prevent a large amount of gas from leaking out when the downstream pipeline breaks. A one-way valve is installed on the gas filling pipeline, so that the gas can be automatically opened under pressure during inflation, without manual switch. When the inflation volume reaches the rated pressure, the inflation will stop and the one-way valve will be closed.

Claims (6)

1. a kind of 35MPa high-pressure hydrogen storings system, including multiple gas cylinders (1), the gas cylinder (1) are used to store high pressure hydrogen, it is special Levy and be, the multiple gas cylinder (1) is provided with combination valve (2), the import and export of each combination valve (2) with respective high-voltage tube Road (3) is connected, and overflow valve (4) is provided with every pressure duct (3), with output pipe after a plurality of pressure duct (3) convergence (5) it is connected, needle-valve (6) is provided with the output pipe (5)；The output pipe (5) is connected with output gas joint (7).

2. 35MPa high-pressure hydrogen storings system according to claim 1, it is characterised in that a plurality of pressure duct (3) convergence Also it is connected afterwards with aerating pipeline (8), check valve (9), the aerating pipeline (8) and aerating is provided with the aerating pipeline (8) Joint (10) is connected.

3. 35MPa high-pressure hydrogen storings system according to claim 2, it is characterised in that also set up on the aerating pipeline (8) There is filter (11), the filter (11) is used to filter the impurity in gas.

4. 35MPa high-pressure hydrogen storings system according to claim 1, it is characterised in that the combination valve (2) is provided with pressure Pressure sensor (12) is installed on sensor interface, the pressure sensor interface.

5. 35MPa high-pressure hydrogen storings system according to claim 1, it is characterised in that the combination valve (2) is provided with two Import and export, one of import and export is connected with pressure duct (3), and another import and export is connected with low pressure line (13), described low Pressure pipe road is connected with exhaust port (14).

6. 35MPa high-pressure hydrogen storings system according to claim 1, it is characterised in that the combination valve (2) has been internally integrated Temperature sensor, the temperature sensor is used to detect temperature in bottle.