CN212434672U

CN212434672U - Cell humidifying tank for fuel cell testing bench

Info

Publication number: CN212434672U
Application number: CN202021673009.6U
Authority: CN
Inventors: 印磊; 洪浩祯; 程志国
Original assignee: Lvzhi New Energy Technology Shanghai Co ltd
Current assignee: Lvzhi New Energy Technology Shanghai Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-01-29
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses a fuel cell tests battery humidification jar for rack, include: the upper cover is provided with an air outlet, and an air-entraining pipe extends from the air outlet; the middle tank body is formed by hermetically sleeving an inner cavity body and an outer heat insulation body; wherein: the upper end of the cavity body is sealed, the upper end of the cavity body is provided with an air duct, and a water conduit extending out of the upper end surface of the cavity body is arranged in the cavity body; the heat insulator is provided with a water inlet; the middle tank body is connected with the upper cover in a sealing way, and the air guide pipe is connected with the air guide pipe in a sealing way; a heat-preservation water inlet area is formed between the upper cover and the heat insulator; the lower tank body is connected with the middle tank body in a sealing way; the lower tank body is provided with an air inlet and a water outlet at the bottom; a water spraying pipe is arranged in the lower tank body and is connected with the lower end of the water diversion pipe; and the heater is communicated with the water outlet and the water inlet through a pipeline.

Description

Cell humidifying tank for fuel cell testing bench

Technical Field

The utility model relates to a fuel cell technical field, the more specifically say, are a fuel cell tests battery humidification jar for rack.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. It is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel cells use fuel and oxygen as raw materials; meanwhile, no mechanical transmission part is arranged, so that no noise pollution is caused, and the discharged harmful gas is less. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy conservation and ecological environment conservation.

In the prior art, a membrane humidifier is used for humidifying anode gas on a fuel cell test bench. As is known from technical documents such as "development of a membrane humidifier for a fuel cell system" and "application of a wet membrane humidifier", the main structure of the membrane humidifier is as follows: clean tap water (or treated soft water) enters the circulating water tank through a water inlet pipeline, and the water level is controlled by a floating ball valve; when the humidifier works, the water in the water tank is conveyed to the water drencher at the top of the humidifier by the circulating water pump, the water drencher ensures that the water is uniformly distributed on the wet film material, and the water permeates downwards from the top of the wet film material and is absorbed by the wet film material to form a uniform water film. When the dry air passes through the humidifier, part of water is in contact with the air to be vaporized and evaporated, so that the air is humidified (namely the humidity is increased) to achieve the humidification purpose; the water which is not evaporated flows back to the circulating water tank from the lower part of the humidifier, and the water in the circulating water tank is repeatedly recycled by the circulating water pump.

The defects are that the water vapor can not reach the saturation point after the air is treated in the actual process, the air temperature is reduced, and the heat quantity is reduced. The main reason is that the humidifying area of the membrane humidifier is small. When the gas flow is large, the defect is obvious, and the dew point cannot be reached after passing through the humidifier.

SUMMERY OF THE UTILITY MODEL

The application provides a fuel cell tests for rack battery humidification jar, aims at solving the membrane humidifier that adopts in the current can't satisfy the sufficient demand of gaseous air humidity of positive pole.

In order to achieve the technical purpose, the following technical scheme is adopted in the application:

a cell humidification canister for a fuel cell test rig comprising: the upper cover is provided with an air outlet, and an air-entraining pipe extends from the air outlet; the middle tank body is formed by hermetically sleeving an inner cavity body and an outer heat insulation body; wherein: the upper end of the cavity body is sealed, the upper end of the cavity body is provided with an air duct, and a water conduit extending out of the upper end surface of the cavity body is arranged in the cavity body; the heat insulator is provided with a water inlet; the middle tank body is connected with the upper cover in a sealing way, and the air guide pipe is connected with the air guide pipe in a sealing way; a heat-preservation water inlet area is formed between the upper cover and the heat insulator; the lower tank body is connected with the middle tank body in a sealing way; the lower tank body is provided with an air inlet and a water outlet at the bottom; a water spraying pipe is arranged in the lower tank body and is connected with the lower end of the water diversion pipe; and the heater is communicated with the water outlet and the water inlet through a pipeline.

Preferably, the lower end of the lower tank is fixed to a mounting plate.

Preferably, a water replenishing port is arranged on the lower tank body.

Preferably, the lower tank body is provided with a conductivity test interface.

Preferably, a plurality of groups of triple nozzles are arranged on the water spraying pipe, and the triple nozzles are staggered by an angle; each triplet nozzle includes three nozzles, three nozzles with even angle distribution on same high spray pipe, and spray angle down.

Preferably, the number of the spray pipes is two, and three triple nozzles are arranged on each spray pipe.

Preferably, the water outlet of the nozzle and the main body of the nozzle are integrally formed into two staggered S-shaped blades, and the largest smooth path is formed between the S-shaped blades.

Preferably, two layers of filter screens are arranged in the middle tank body, and the filter screens are combined on the water guide pipe.

Preferably, the upper layer of the filter screen is 600 meshes; the lower layer of the filter screen is 200 meshes.

Due to the adoption of the technical scheme, the mode of utilizing the multilayer combination of the tank body increases the heat preservation body, improves the spraying temperature, can greatly increase the humidification area, improve the humidification dew point and meet the humidification requirement of large-flow gas. The whole structure is easy to disassemble and assemble and convenient to maintain.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a cross-sectional view of the present application;

fig. 3A is a schematic view of a nozzle of the present application and fig. 3B is a schematic view of the jetting thereof.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Referring to fig. 1, a schematic diagram of a cell humidification can for a fuel cell test rig according to the present application is shown. In this embodiment, the method mainly includes: an upper cover 1, a middle tank body 2, a lower tank body 3, a heater 4 and the like.

Referring to fig. 1 and 2, the upper cover 1 is provided with an air outlet 11, and a bleed air pipe 12 extends from the air outlet 11. The upper cover 1 is hermetically connected with the middle tank body 2 through a flange surface.

The middle tank body 2 is formed by sealing and sleeving an inner cavity body 21 and an outer heat insulation body 22. As shown in fig. 2, the upper end surface of the hollow cavity 21 is sealed, and an air duct 23 is arranged at the upper end of the hollow cavity 21, and the air duct 23 communicates the inside and the outside of the hollow cavity 21. Two water conduits 24 extending out of the upper end surface of the hollow cavity 21 are arranged in the hollow cavity 21. The heat insulator 22 is provided with a water inlet 25.

After the middle tank body 2 is hermetically connected with the upper cover 1, the air duct 24 is hermetically connected with the air-entraining pipe 12 on the upper cover 1. A heat-preservation water inlet area A is formed between the upper cover 1 and the heat insulator 22. And the water conduit 24 guides the hot water in the warm water intake area a to the lower side. The heat preservation water inlet area A comprises an area of the upper cover 1 and the inner space of the heat preservation body 22 of the middle tank body 2, so that a heat preservation state is formed at the upper part and the middle part of the tank body, and the air can be prevented from receiving temperature influence when air is exhausted, so that the saturation degree is reduced.

Referring to fig. 1 and 2, the lower tank 3 of the present application is provided with an air inlet 31 on a sidewall thereof, and an air inlet mechanism 4 is connected to the air inlet 31 to deliver the air into the lower tank 3. The bottom of the lower tank 3 is provided with a drain 32 for draining water out of the lower tank 3. Two water spray pipes 5 are arranged in the lower tank body 3. As shown in fig. 2, three sets of triple nozzles 51 are provided on each of the water spray pipes 5. The three-way nozzles 51 of each group are arranged at different angles to ensure that the lower space can be fully covered during simultaneous injection.

Each of the three nozzles 51 comprises three nozzles 6, and the three nozzles 6 are uniformly distributed on the water spray pipe 5 at the same height and have downward spraying angles. As shown in fig. 3A and 3B, two staggered S-shaped blades 61 are integrally formed with the main body of the nozzle 6 at the water outlet of the nozzle 6, and a maximum clear path is formed between the two S-shaped blades 61. The nozzle 6 can effectively spray at a pressure as low as 0.2bar, and the spraying angle is 90 degrees. So form the multilayer through 18 nozzles of this application and spout the fog district, the spray area has almost been full of the cross-section of whole jar of body, has increased effective humidification area, and atomization effect is showing.

In addition, the lower tank 3 of the present application is further provided with a water replenishing port 33 and a conductivity testing interface 34, so as to replenish water and test conductivity. The lower end of the lower tank 3 of the present application is fixed to a mounting plate 7. The mounting plate 7 may facilitate fixing the humidification canister of the present application on a fuel cell test stand.

However, even if the water is atomized through the nozzle, it is inevitable that some large particles are present inside the tank. When the heated gas flows into the humidifying tank at the pressure of 9 kg and the flow rate of 1000L/MIN, the heated gas is mixed with atomized water particles and then flows out from the upper part of the humidifying tank, and in the process, large water beads in the tank are inevitably taken out and mixed in a pipeline of a gas outlet part to enter the inside of a galvanic pile, so that the test of the galvanic pile is adversely affected. Therefore this application has set up two-layer filter screen more in the middle part jar body 2, and two-layer filter screen combines in two on the aqueduct 24. The first layer of filter screen 81 is positioned below the first layer of filter screen 81, and the filter screen 81 is 200 meshes; the second layer of filter screen 82 is positioned above, and the filter screen 82 is 600 meshes. After the humidified gas passes through the two layers of filter screens when flowing through the area, large water droplet particles can be completely removed, so that the gas flowing out from the upper outlet of the humidification tank cannot contain water droplet particles.

This application is when using, at first seal moisturizing mouth 33 after replenishing some water earlier through moisturizing mouth 33, the water yield can adopt the control of electron level gauge then the air lets in jar internal portion with the flow of 1000L MIN through air inlet 31, the water of jar internal portion enters into jar internal portion from water inlet 25 again after 20KW heater 9 through the water pump pumping of outlet 32 through 5KW, then become the atomizing state after the water after the nozzle 6 of jar internal portion of heating, the water granule after the atomizing is covered with down the jar body. And finally, the gas enters the lower tank body through the gas inlet 31, the dried gas is wetted by the atomized water particles, the gas flows from bottom to top, and the finally discharged gas is the gas with saturated dew point and then enters the electric pile.

The utility model can greatly improve the gas humidifying effect for large-flow gas; can keep the temperature of the gas, and has a classic and beautiful structure. The utility model discloses an all materials of jar body adopt 316 stainless steel, and corrosion resistance is strong, and easily maintains.

The above-described embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Those skilled in the art will recognize that changes and modifications can be made in the invention as described herein without departing from the scope of the invention as defined by the appended claims.

Claims

1. Fuel cell test is battery humidification jar for rack, its characterized in that includes:

the upper cover is provided with an air outlet, and an air-entraining pipe extends from the air outlet;

the middle tank body is formed by hermetically sleeving an inner cavity body and an outer heat insulation body; wherein:

the upper end of the cavity body is sealed, the upper end of the cavity body is provided with an air duct, and a water conduit extending out of the upper end surface of the cavity body is arranged in the cavity body;

the heat insulator is provided with a water inlet;

the middle tank body is connected with the upper cover in a sealing way, and the air guide pipe is connected with the air guide pipe in a sealing way; a heat-preservation water inlet area is formed between the upper cover and the heat insulator;

the lower tank body is connected with the middle tank body in a sealing way; the lower tank body is provided with an air inlet and a water outlet at the bottom; a water spraying pipe is arranged in the lower tank body and is connected with the lower end of the water diversion pipe;

and the heater is communicated with the water outlet and the water inlet through a pipeline.

2. The fuel cell humidification canister for a fuel cell test stand of claim 1, wherein a lower end of the lower canister is fixed to a mounting plate.

3. The cell humidification canister for a fuel cell test stand of claim 1, wherein a water replenishment port is provided on the lower canister body.

4. The fuel cell humidification canister for a fuel cell test rig of claim 1, wherein the lower canister is provided with a conductivity test interface.

5. The cell humidification canister for a fuel cell test rack according to claim 1, wherein a plurality of sets of triplet nozzles are provided on the water spray pipe, and the triplet nozzles of each set are staggered in angle; each triplet nozzle includes three nozzles, three nozzles with even angle distribution on same high spray pipe, and spray angle down.

6. The fuel cell humidification canister for a fuel cell test rig of claim 1 or 5, wherein there are two water jets, and three triplet nozzles are provided on each water jet.

7. The fuel cell humidification canister for a fuel cell test rig of claim 6, wherein the water outlet of the nozzle is integrally formed with the body of the nozzle with two interleaved S-shaped vanes forming a maximum clear path therebetween.

8. The cell humidification tank for a fuel cell test stand according to claim 1, wherein two layers of filter screens are provided in the middle tank body, and the filter screens are coupled to the water conduit.

9. The fuel cell humidification canister for a fuel cell test stand according to claim 8, wherein the upper layer of the filter screen is 600 mesh; the lower layer of the filter screen is 200 meshes.