CN210607473U

CN210607473U - Hydrogen pressure reducing device of fuel cell

Info

Publication number: CN210607473U
Application number: CN201921675942.4U
Authority: CN
Inventors: 陈焕光
Original assignee: SHANGHAI EVERPOWER TECHNOLOGIES Ltd
Current assignee: Qingdao Hanhe hydrogen energy equipment Technology Co.,Ltd.
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-22
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a fuel cell hydrogen pressure relief device, including hydrogenation interface, check valve, filter and the hydrogen bottle group that connects gradually, pressure relief device still include high pressure relief pipeline and the middling pressure relief pipeline that connects in parallel each other, high pressure relief pipeline include a plurality of parallelly connected high pressure relief sub-pipelines, middling pressure relief pipeline include a plurality of parallelly connected middling pressure relief sub-pipelines, every high pressure relief sub-pipeline links to each other with the output pipeline of hydrogen bottle group respectively, every high pressure relief sub-pipeline all includes high-pressure pipeline, one-level relief pressure valve and the middling pressure pipeline that sets gradually, every middling pressure relief sub-pipeline is including the middling pressure pipeline, second grade relief pressure valve and the low-pressure pipeline that set gradually, every low-pressure pipeline passes through low pressure output interface output low-pressure hydrogen, and every middling pressure pipeline is respectively through middling pressure output interface output middling pressure hydrogen. Compared with the prior art, the utility model has the advantages of satisfy large-traffic hydrogen supply demand, flexibility is high, security and reliability are high, with low costs.

Description

Hydrogen pressure reducing device of fuel cell

Technical Field

The utility model belongs to the technical field of fuel cell and specifically relates to a fuel cell hydrogen pressure relief device is related to.

Background

The fuel cell converts Gibbs free energy in chemical energy of fuel into electric energy through electrochemical reaction, and is not limited by Carnot cycle effect, so that the efficiency is high; in addition, the fuel cell uses fuel and hydrogen as raw materials, and has no mechanical transmission part, so that the fuel cell has no noise pollution and discharges extremely little harmful gas. From the viewpoint of energy saving and ecological environment protection, fuel cells are the most promising power generation technology.

Most commonly used fuel cells are hydrogen-oxygen fuel cells, which require a hydrogen storage system to provide hydrogen gas to the hydrogen-oxygen fuel cell during operation. The hydrogen storage system stores hydrogen under a high-pressure state, the hydrogen can be conveyed to the fuel cell after being decompressed by the decompressor, the conventional decompressor can only accomplish simple small-flow decompression generally, the stability and the safety reliability are lower when large-flow hydrogen is supplied, the cost of the adopted decompressor is higher, and the flexibility is lower.

Chinese utility model discloses a hydrogen storage system is disclosed in chinese utility model patent publication No. CN208630361U, including storing the subsystem, store the subsystem and include one or more hydrogen storage bottle, the bottle valve of hydrogen storage bottle bottleneck includes air inlet and gas outlet, air inlet and filling subsystem intercommunication, gas outlet and supply with the subsystem intercommunication, supply with the exit end and the fuel cell system intercommunication of subsystem, hydrogen storage system still includes the safety monitoring subsystem that can monitor entire system safety situation, supply with the subsystem including can be according to fuel cell system demand and control output pressure's pressure reducer. This use novel can pass through the pressure reducer decompression with the high-pressure hydrogen of storage according to fuel cell's hydrogen pressure demand, in time delivers for fuel cell. In above-mentioned utility model, the output of hydrogen storage bottle adopts series connection output, then reduces pressure through the pressure reducer, can realize the low discharge decompression, nevertheless can't satisfy the requirement under the condition that needs carry out large-traffic hydrogen supply.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a hydrogen pressure reducing device for a fuel cell, which overcomes the above-mentioned drawbacks of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a fuel cell hydrogen pressure relief device, is including the hydrogenation interface, check valve, filter and the hydrogen bottle group that connect gradually, pressure relief device still including high-pressure relief pipeline and the middling pressure relief pipeline that connect in parallel each other, high-pressure relief pipeline include a plurality of parallelly connected high-pressure relief sub-pipelines, middling pressure relief pipeline include a plurality of parallelly connected middling pressure relief sub-pipelines, every high-pressure relief sub-pipeline links to each other with the output pipeline of hydrogen bottle group respectively, every high-pressure relief sub-pipeline all includes the high-pressure pipeline, one-level relief valve and the middling pressure pipeline that set gradually, every middling pressure relief sub-pipeline is including middling pressure pipeline, second grade relief valve and the low-pressure pipeline that set gradually, and every low-pressure pipeline exports low-pressure hydrogen through the low pressure output interface, and every middling pressure pipeline exports middling pressure hydrogen through the middl.

Preferably, the low-pressure pipeline is provided with a first ball valve.

Preferably, a second ball valve is arranged on a pipeline between the medium-pressure pipeline and the medium-pressure output interface.

Preferably, the high-pressure pipeline is provided with a high-pressure sensor and a high-pressure gauge, the medium-pressure pipeline is provided with a medium-pressure sensor and a medium-pressure gauge, and the low-pressure pipeline is provided with a low-pressure sensor and a low-pressure gauge.

More preferably, the pressure reducing device further comprises an electrical connection terminal, and the high-pressure sensor, the medium-pressure sensor, the low-pressure sensor and the cylinder valve of the hydrogen cylinder group are all connected with the electrical connection terminal through signal lines.

Preferably, the pressure reducing device further comprises an exhaust pipe for exhausting, and the exhaust pipe is respectively connected with a cylinder valve safety port and a tail valve safety port of the hydrogen cylinder group, a safety overflow port of the primary pressure reducing valve, the medium-pressure pipeline and the low-pressure pipeline.

More preferably, a flame arrester is arranged at the exhaust port of the exhaust pipe.

More preferably, the medium pressure pipeline and the low pressure pipeline are both connected with the exhaust pipe through a safety valve.

More preferably, the low pressure pipeline is also connected with the exhaust pipe through a needle valve.

Compared with the prior art, the utility model has the advantages of it is following:

firstly, meeting the demand of large flow hydrogen supply: the utility model discloses a set up two or a plurality of parallelly connected decompression pipelines, export the hydrogen after decompression respectively again, increased the output flow, satisfied the demand of the large-traffic hydrogen supply of fuel cell.

Secondly, the flexibility is high: the utility model discloses set up the ball valve in the pipeline, can adjust the hydrogen flow, both can large-traffic hydrogen supply, also can the low discharge hydrogen supply, the flexibility is higher.

Thirdly, the safety and the reliability are high: the utility model discloses a set up spark arrester, relief valve and needle valve, improved the security and the reliability of device.

Fourthly, the cost is low: the utility model discloses only just can realize the decompression of device through one-level relief pressure valve and second grade relief pressure valve, just can increase the hydrogen flow through setting up parallelly connected relief pressure pipeline, the process cost is lower.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1, a fuel cell hydrogen pressure relief device, including the hydrogenation interface that connects gradually, the check valve, filter and hydrogen bottle group, hydrogenation interface number in this embodiment is two, be divided into W21.8 hydrogen female joint and TN5 interface respectively, pressure relief device still includes parallelly connected high-pressure decompression pipeline and middling pressure decompression pipeline each other, high-pressure decompression pipeline includes a plurality of parallelly connected high-pressure decompression sub-pipelines, middling pressure decompression pipeline includes a plurality of parallelly connected middling pressure decompression sub-pipelines, every high-pressure decompression sub-pipeline links to each other with the output pipeline of hydrogen bottle group respectively, because be equipped with the check valve, so the output pipeline of hydrogen bottle group can be parallelly connected with the input pipeline.

Each high-pressure reducing sub-pipeline comprises a high-pressure pipeline, a first-level pressure reducing valve and a medium-pressure pipeline which are sequentially connected, and each medium-pressure reducing sub-pipeline comprises a medium-pressure pipeline, a second-level pressure reducing valve and a low-pressure pipeline which are sequentially connected. Every low pressure pipeline all outputs low pressure hydrogen through low pressure output interface, and every middling pressure pipeline all outputs middling pressure hydrogen through middling pressure output interface, is equipped with the third ball valve on the pipeline between middling pressure output interface and middling pressure pipeline, and the third ball valve can prevent the hydrogen refluence.

The low pressure pipeline all is equipped with first ball valve, is equipped with two parallelly connected low pressure pipelines in this embodiment, so is equipped with first ball valve 1 and first ball valve 2 respectively for adjust the flow of hydrogen in every low pressure pipeline.

Every high-pressure pipeline all is equipped with high pressure sensor and high pressure gauge, and every middling pressure pipeline all is equipped with middling pressure sensor and middling pressure gauge, and every low pressure pipeline all is equipped with low pressure sensor and low pressure gauge, and sensor and manometer all are used for monitoring device's running state. The signal lines of the high-voltage sensor, the medium-voltage sensor, the low-voltage sensor and the cylinder valve of the hydrogen cylinder group are all connected with the electric connecting terminals, and a controller outside the device can monitor the running state of the device by being connected with the electric connecting terminals in the pressure reducing device.

The utility model provides a pressure relief device is still including being used for carminative blast pipe, and the blast pipe is connected with safe overflow mouth, middling pressure pipeline and the low pressure pipeline of the safe mouth of the cylinder valve of hydrogen cylinder group and tail valve safety mouth, one-level relief pressure valve respectively, and the exhaust port department of blast pipe is equipped with the spark arrester

The cylinder valve safety port and the tail valve safety port of the hydrogen cylinder group are respectively connected with the input end of the flame arrester.

The medium pressure pipeline and the low pressure pipeline are both connected with the exhaust pipe through safety valves, and the low pressure pipeline is also connected with the exhaust port through needle valves. Through setting up relief valve, needle valve and spark arrester, improved the security and the reliability of system greatly.

In the embodiment, the pressure of the hydrogen output by the medium-pressure output pipeline is 10-20 bar, and the pressure of the hydrogen output by the low-pressure output pipeline is 1.5-2 bar.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a fuel cell hydrogen pressure relief device, is including hydrogenation interface, check valve, filter and the hydrogen bottle group that connects gradually, its characterized in that, pressure relief device still include high pressure relief pipeline and middling pressure relief pipeline that connect in parallel each other, high pressure relief pipeline include a plurality of parallelly connected high pressure relief sub-pipelines, middling pressure relief pipeline include a plurality of parallelly connected middling pressure relief sub-pipelines, every high pressure relief sub-pipeline links to each other with the output pipeline of hydrogen bottle group respectively, every high pressure relief sub-pipeline all includes high-pressure pipeline, one-level relief valve and the middling pressure pipeline that sets gradually, every middling pressure relief sub-pipeline is including the middling pressure pipeline, second grade relief valve and the low-pressure pipeline that set gradually, every low-pressure pipeline exports low-pressure hydrogen through low pressure output interface, and every middling pressure pipeline exports middling pressure hydrogen through middling pressure output interface respectively.

2. A fuel cell hydrogen pressure reduction device as defined in claim 1, wherein said low pressure conduit is provided with a first ball valve.

3. The fuel cell hydrogen pressure reduction device of claim 1, wherein a second ball valve is provided on a conduit between the medium pressure conduit and the medium pressure output connection.

4. The fuel cell hydrogen pressure reduction device according to claim 1, wherein the high pressure pipe is provided with a high pressure sensor and a high pressure gauge, the medium pressure pipe is provided with a medium pressure sensor and a medium pressure gauge, and the low pressure pipe is provided with a low pressure sensor and a low pressure gauge.

5. The fuel cell hydrogen pressure reduction device according to claim 4, wherein the pressure reduction device further comprises an electrical connection terminal, and the high-pressure sensor, the medium-pressure sensor, the low-pressure sensor and the cylinder valve of the hydrogen cylinder group are connected with the electrical connection terminal through signal lines.

6. The fuel cell hydrogen pressure reduction device according to claim 1, further comprising an exhaust pipe for exhausting, wherein the exhaust pipe is connected to the cylinder valve safety port and the tail valve safety port of the hydrogen cylinder group, the safety overflow port of the primary pressure reduction valve, the medium pressure pipe and the low pressure pipe, respectively.

7. The fuel cell hydrogen pressure reduction device according to claim 6, wherein a flame arrester is provided at an exhaust port of the exhaust pipe.

8. The fuel cell hydrogen pressure reduction device according to claim 6, wherein the medium-pressure pipe and the low-pressure pipe are connected to an exhaust pipe through a safety valve.

9. The fuel cell hydrogen pressure reduction device according to claim 8, wherein the low pressure conduit is further connected to an exhaust pipe through a needle valve.