CN216698444U

CN216698444U - Tail exhaust device for fuel cell test

Info

Publication number: CN216698444U
Application number: CN202123440857.XU
Authority: CN
Inventors: 时哲; 张德奎; 王丽娜
Original assignee: China Automobile Industry Engineering Co Ltd
Current assignee: China Automobile Industry Engineering Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-07
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a tail exhaust device for a fuel cell test, which comprises a tail exhaust pipe of a T-shaped structure formed by connecting and communicating a horizontal pipe and a vertical pipe, wherein a water vapor condensation heat exchanger is wound outside the horizontal pipe, a hydrogen concentration detection sensor is arranged on the pipe wall of the horizontal pipe, and a nitrogen filling pipe with a control valve is connected through a nitrogen filling inlet. The utility model has good water vapor separation effect, avoids the corrosion of the tail discharge pipe and eliminates the potential safety hazard of hydrogen explosion.

Description

Tail exhaust device for fuel cell test

Technical Field

The utility model relates to the technical field of fuel cell testing, in particular to a tail exhaust device for fuel cell testing.

Background

The hydrogen energy is zero-carbon fuel, has the advantages of rich reserves, high heat value, zero pollution, storability, wide sources and the like, and can play a key role in carbon neutralization and carbon peak reaching. The fuel cell directly generates electric energy by electrochemical reaction of hydrogen and oxygen under the action of a catalyst, and is a clean and efficient energy conversion technology. The tail row of the fuel cell mainly comprises water vapor, air and trace hydrogen, but in the research and development test process of the fuel cell, the condition of insufficient hydrogen reaction can occur, so that the tail row contains hydrogen with the concentration higher than 4% of the lower explosion limit of the hydrogen, and potential safety hazards are caused. Meanwhile, the tail exhaust pipe contains a large amount of water vapor, the water vapor is not treated by the current common method, the water vapor is naturally condensed to achieve the purpose of steam-water separation, the effect is not good, and the tail exhaust pipe can cause corrosion for a long time in a high-temperature and high-humidity environment. No preventive and protective measures are taken when the hydrogen concentration is higher than the lower explosion limit in the test process, and potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tail pipe device for testing a fuel cell, aiming at overcoming the technical defects in the prior art, and solving the problems of poor steam-water separation effect and potential safety hazard of hydrogen explosion of the tail pipe device for testing at present.

The technical scheme adopted for realizing the purpose of the utility model is as follows:

the utility model provides a tail calandria device is used in fuel cell test, includes the tail calandria of the T type structure that is connected and communicates and forms by a horizontal pipe and a riser, the outside winding of horizontal pipe has the vapor condensation heat exchanger, install hydrogen concentration detection sensor on the pipe wall of horizontal pipe and fill the mouth through the nitrogen gas of seting up and connect the nitrogen gas that has the control valve and fill the pipe.

An umbrella-shaped hood is installed at the top of the vertical pipe, and a flame arrester is installed below the umbrella-shaped hood on the vertical pipe.

And a condensed water collecting tank is arranged inside the position close to the bottom end of the lower part of the vertical pipe.

The bottom of the condensed water collecting tank is provided with a water outlet and a water discharge pipe with a valve, the water discharge pipe extends out of the vertical pipe, and the valve is arranged outside the vertical pipe.

And an access hole is formed in the lower part of the condensate collecting tank on the side wall of the lower part of the vertical pipe, and an access door is installed on the access hole.

The flame arrester is a flame arrester with a steam heat tracing device or a water heat tracing device.

The utility model has good water vapor separation effect, avoids the corrosion of the tail discharge pipe and eliminates the potential safety hazard of hydrogen explosion.

Drawings

Fig. 1 is a schematic view of the entire structure of a fuel cell test tail assembly according to the present invention.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, the tail pipe device for testing a fuel cell according to the embodiment of the present invention includes a tail pipe 100 having a T-shaped structure formed by connecting and communicating a horizontal pipe and a vertical pipe, a water vapor condensing heat exchanger 1 is wound around the outside of the horizontal pipe, and a hydrogen concentration detection sensor 2 is installed on the pipe wall of the horizontal pipe and a nitrogen filling pipe 3 having a control valve is connected to the pipe wall through a nitrogen filling port.

Wherein, as a preferred embodiment, an umbrella-shaped hood 7 is arranged at the top of the vertical pipe, and a flame arrester 6 is arranged on the vertical pipe below the umbrella-shaped hood.

Wherein, a condensed water collecting tank 4 is arranged inside the position close to the bottom end of the lower part of the vertical pipe.

The bottom of the condensate collecting tank is provided with a water outlet and a water drain pipe 8 with a valve, the water drain pipe extends out of the vertical pipe, and the valve is a ball valve and is arranged outside the vertical pipe.

In the preferred embodiment, an access opening 5 is formed in the lower side wall of the vertical pipe and below the condensate collecting tank.

As a preferred embodiment, the flame arrestor may be a flame arrestor with a steam tracing or a water tracing.

According to the tail exhaust device for the fuel cell test, provided by the embodiment of the utility model, a set of hydrogen concentration detection device is added at the front section of the tail exhaust pipe, and if the hydrogen concentration exceeds the standard, nitrogen is immediately filled into the tail exhaust pipe to dilute the hydrogen concentration of the tail exhaust pipe. In addition, a flame arrester is added at the tail end of the tail calandria. The flame arrester is used for preventing the hydrogen from exploding in the case of open fire, static electricity, lightning stroke and the like. The flame arrester can be configured to be provided with a steam or water heat tracing device, and the problems that the flame arrester microporous structure is blocked by steam and the tail pipe is blocked due to icing in winter in the north are solved. Thereby solving the problem of potential safety hazard that the hydrogen concentration is higher than the lower limit of explosion

According to the tail discharge device for the fuel cell test, provided by the embodiment of the utility model, the cooling water circulating device is additionally arranged at the front section of the tail discharge pipe, so that water vapor is condensed to achieve steam-water separation, and the drain outlet of the tail discharge pipe is provided with the access hole, so that the drain hose is convenient to overhaul and replace, and the problem that the pipeline is corroded due to natural condensation of the water vapor when the water vapor is not treated is solved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a tail calandria device is used in fuel cell test, its characterized in that includes and is connected and communicates the tail calandria of the T type structure that forms by a horizontal pipe and a riser, the outside winding of horizontal pipe has the vapor condensation heat exchanger, install hydrogen concentration detection sensor on the pipe wall of horizontal pipe and fill the mouth through the nitrogen gas of seting up and connect the nitrogen gas that has the control valve and fill the pipe.

2. The tail row device for the fuel cell test as recited in claim 1, wherein an umbrella-shaped hood is installed at the top of the vertical pipe, and a flame arrester is installed on the vertical pipe below the umbrella-shaped hood.

3. The fuel cell test tail pipe assembly as set forth in claim 2, wherein a condensate collection trough is provided within a lower portion of the vertical pipe proximate the bottom end thereof.

4. The tail discharge device for the fuel cell test as recited in claim 3, wherein a drain outlet is formed at a bottom of the condensed water collecting tank and is connected with a drain pipe having a valve, the drain pipe extends out of the vertical pipe, and the valve is disposed outside the vertical pipe.

5. The tail pipe device for testing a fuel cell according to claim 4, wherein an access opening is formed in a lower side wall of the vertical pipe at a lower portion of the condensed water collecting tank.

6. The exhaust device for the fuel cell test as set forth in claim 2, wherein the flame arrester is a flame arrester with a steam heat tracing device or a water heat tracing device.