KR101325144B1 - Apparatus and method of gas-liquid auto separation for fuel cell system - Google Patents

Abstract

The present invention relates to an apparatus and a method for guiding condensed water separated from gas-liquid separators in a fuel cell to a condensed water vessel without additionally operating a valve and for storing the condensed water. According to an embodiment of the present invention, provided are an automatic gas-liquid separation method and an automatic gas-liquid separation apparatus for a fuel cell system comprising a plurality of separators installed in a fuel cell system; a condensed water vessel connected to the gas-liquid separators by a plurality of condensed water lines so as to store condensed water separated from the gas-liquid separators in an inner space sealed from the atmosphere; and a circulating pump installed on the discharge line of the condensed water vessel. Condensed water separated from the gas-liquid separators is introduced into the condensed water vessel through the condensed water lines owing to a siphon phenomenon when the circulating pump is operated. [Reference numerals] (AA) Reforming gas;(BB,DD,FF) Gas + Water;(CC,EE) Gas;(GG) Collect pure water;(HH) Use pure water

Description

Apparatus and method for automatic gas-liquid separation of fuel cell system {APPARATUS AND METHOD OF GAS-LIQUID AUTO SEPARATION FOR FUEL CELL SYSTEM}

The present invention relates to a gas-liquid separation device and method of a fuel cell system, and more particularly, to a device and method for guiding and storing condensate separated from a gas-liquid separator in a fuel cell to a condensate vessel without a separate valve operation.

Fuel cell is an electrochemical device that converts chemical energy of hydrogen and oxygen directly into electrical energy.Alkaline fuel cell (AFC), phosphate fuel cell (PAGC), Molten carbonate fuel cell (MCFC), solid oxide fuel cell (SOFC), polymer electrolyte membrane fuel cell (PEMFC) and the like.

Among them, the electrolyte of the polymer electrolyte fuel cell is distinguished from other fuel cells by a solid polymer (membrane), not a liquid. In such a polymer electrolyte fuel cell, hydrocarbon-based (CH-based) fuels, such as LNG and LPG, are usually purified through a desulfurization process, a reforming reaction, and a hydrogen purification process in a fuel converter, and only hydrogen (H ₂ ) is purified. It is supplied to the anode of the cell stack so that the electrical energy is generated by the electrochemical oxidation of hydrogen as the fuel at the anode and the electrochemical reduction of oxygen as the oxidant at the cathode.

1 is a schematic view showing a conventional fuel cell system of PEMFC (Polymer Electrolyte Membrane Fuel Cell) method.

As shown in FIG. 1, in the conventional fuel cell system, hydrogen is generated during each stage in the reformer 10, and the hydrogen is contained in the fuel cell stack through the fuel supply line 31 in a state of containing water. It is supplied to the fuel electrode 21 of 20.

In addition, some of the fuel supplied to the anode 21 is consumed by an electrochemical reaction with oxygen supplied to the cathode 22, while some are discharged to off-gas which does not react with oxygen. The fuel is returned to the steam generating burner 11 of the reformer 10 along the fuel recovery line 32 and recycled as combustion fuel.

Here, the hydrogen purified in the reformer 10 is discharged at a temperature of about 100 to 120 ℃ while going through several steps, the fuel cell stack 20 maintains the temperature of about 50 ℃ outside the overall efficiency of the fuel cell Since it can be increased, it is necessary to lower the temperature of hydrogen by the required temperature of the fuel cell stack 20 before eventually flowing into the fuel cell stack 20.

In addition, the hydrocarbon-based fuel contains a large amount of water in the process of reforming, but if the moisture is more than the appropriate amount rather than the fuel cell stack 20 contained in the hydrogen before entering the fuel cell stack 20 because it may lower the performance of the fuel cell It is necessary to dehydrate a certain amount of water.

In addition, since the gas used in the fuel cell stack 20 contains a large amount of water, it is necessary to remove water from the recovered gas in order to improve combustion efficiency in the reformer 20.

To this end, as shown in FIG. 1, a first gas-liquid separator 41 is installed between the fuel cell stack 20 and the burner 11 of the reformer 10, and the reformer 10 and the fuel cell stack are illustrated in FIG. 1. A second gas-liquid separator 42 is provided between the 20 to condense and separate water from hydrogen recovered from the fuel cell stack 20 to the reformer 10 and supplied to the fuel cell stack 20. A certain amount of water is condensed and separated from hydrogen.

At this time, the condensate separated from each gas-liquid separator 41 and 42 is collected into the condensate vessel 51 through the condensate recovery lines 43 and 44 and used as cooling water to cool the fuel cell stack 20.

The conventional gas-liquid separators 41 and 42 are provided with separate electric valves 45 for each of the condensate recovery lines 43 and 44, and gas-liquid separation is performed by gravity when the electric valve 45 is opened. In the drawings, reference numeral 52 denotes a water line, 61 denotes a reservoir, and 62 denotes a cooling water line.

However, in the case of using the gas-liquid separators 41 and 42 provided with the electric valve 45 as described above, the electric valve 45 must be separately configured for each condensate return line 43 and 44, and each gas-liquid solution is used. Since a control device for connecting the water level sensor and the electric valve 45 installed in the separators 41 and 42 is required, it is not only a factor of increasing the cost, but also has difficulty in installation, maintenance and repair.

In addition, the gas-liquid separation is dependent on gravity, it is difficult to obtain the desired head due to the nature of the hydrostatic pressure, there is a problem that the design freedom is limited because it is particularly vulnerable to tube friction and back pressure.

In addition, in order to prevent back pressure, it is necessary to open the condensate vessel for storing the water separated from the gas-liquid separator to the atmosphere, in which case the carbon dioxide in the atmosphere flows into the collected condensate, the conductivity of the condensate is increased, the condensate resupply Has a problem that the probability of failure of the fuel cell system increases.

The present invention has been made to solve the problems described above, an embodiment of the present invention is a fuel cell system of the condensate separated from the gas-liquid separator in the fuel cell can be induced and stored in the condensate vessel without a separate valve operation It relates to the provision of an automatic gas-liquid separation device and method.

In addition, an embodiment of the present invention is to recover the condensed water in the gas-liquid separator, it is possible to use a water treatment system installed without depending on gravity as in the prior art, automatic gas-liquid separation device and method of the fuel cell system with improved design freedom and Related.

In addition, an embodiment of the present invention is to ensure that the condensate vessel for recovering and storing the condensate separated from the gas-liquid separator is sealed with the atmosphere, thereby preventing the increase of the conductivity of the condensate by preventing the contact of the stored condensate to the atmosphere of the fuel cell system Automatic gas-liquid separation apparatus and method.

In addition, an embodiment of the present invention relates to an automatic gas-liquid separation device and method of a fuel cell system that is easy to control the water quality by forming a nitrogen curtain on top of the pure water stored in the ultrapure water vessel, thereby preventing contact between pure water and the atmosphere. do.

According to a preferred embodiment of the present invention, a plurality of gas-liquid separator is installed in the fuel cell system; A condensate vessel connected to each of the plurality of gas-liquid separators and a plurality of condensate lines, and configured to store the condensed water separated by the plurality of gas-liquid separators in an airtight interior space; And a circulation pump installed in the discharge line of the condensate vessel, wherein the condensed water separated from the plurality of gas-liquid separators is introduced into the condensate vessel through the plurality of condensate lines by a siphon principle when the circulation pump is driven. An automatic gas-liquid separation device of a fuel cell system is provided.

Here, it may be further connected to the discharge line of the condensate vessel, and may further include an ultra-pure vessel in which the condensed water of the condensate vessel is introduced when the circulation pump is driven.

The apparatus may further include a controller installed at one side of the circulation pump and controlling the driving of the circulation pump according to the level of the condensate separated by the plurality of gas-liquid separators.

At this time, the plurality of condensate line, the square value of the diameter is preferably inversely proportional to the internal pressure of each gas-liquid separator.

In addition, it is preferable that a water treatment filter is installed in the discharge line.

On the other hand, the air blocking casing member is installed on the upper portion of the ultra pure water vessel, the ultra pure water vessel and the air blocking casing member may be communicated by a pressure control tube.

Here, a gas discharge pipe is provided at an upper side of the air blocking casing member to open the air, and a nitrogen curtain is formed inside the air blocking casing member to prevent atmospheric contact of pure water stored in the ultrapure water vessel.

At this time, it is preferable that the nitrogen curtain is formed inside the air blocking casing member by nitrogen gas discharged from the fuel cell stack.

To this end, the nitrogen gas supply pipe is in communication with one side of the air blocking casing member, the nitrogen gas supply pipe is preferably connected to the fuel cell stack.

In addition, gas-liquid separation of the gas discharged from each part of the fuel cell system by a plurality of gas-liquid separator; Storing the condensed water separated by the plurality of gas-liquid separators in a condensed water vessel sealed with air; And transferring the condensed water stored in the condensate vessel to an ultrapure water vessel which is open to the atmosphere.

Here, the condensate separated by the plurality of gas-liquid separators flows into the condensate vessel and the ultrapure water vessel according to the siphon principle when driving the circulation pump installed at one side of the condensate vessel.

At this time, in the process of transferring the condensed water stored in the condensate vessel to the ultra-pure water vessel, passing through the water treatment filter installed in the discharge line of the condensate vessel; may further include a.

In addition, the driving of the circulation pump is preferably made when the level of the condensate separated in the plurality of gas-liquid separator is all above the set value.

In addition, the driving of the circulation pump is preferably stopped when the water level of the condensate separated in any one of the plurality of gas-liquid separator is less than the set value.

Meanwhile, an air blocking casing member may be installed on the ultrapure water vessel, and the ultrapure water vessel and the air blocking casing member may be communicated by a pressure control tube.

At this time, a gas discharge pipe is installed on the upper side of the air blocking casing member to open the air, and inside the air blocking casing member, a nitrogen curtain is formed to prevent atmospheric contact of pure water stored in the ultrapure water vessel.

In this case, it is preferable to form the nitrogen curtain inside the air blocking casing member by nitrogen gas discharged from the fuel cell stack.

To this end, a nitrogen gas supply pipe may be connected to one side of the air blocking casing member, and the nitrogen gas supply pipe may be connected to the fuel cell stack.

According to the automatic gas-liquid separator and method of the fuel cell system according to an embodiment of the present invention, it is possible to recover the condensed water of the gas-liquid separator by using a water treatment system installed in place of the conventional electric valve, with the effect of cost reduction It is convenient to install, maintain and repair.

In addition, since the condensate vessel is sealed with the atmosphere, it is possible to prevent the increase in conductivity due to the atmospheric contact of the stored condensate.

In addition, since the pure water stored in the ultrapure water vessel is prevented from coming into contact with the atmosphere by the nitrogen curtain, it is easy to manage the water quality of the pure water supplied to each part of the fuel cell system.

1 is a schematic view showing a conventional fuel cell system of PEMFC (Polymer Electrolyte Membrane Fuel Cell) method.
Figure 2 is a block diagram of an automatic gas-liquid separation device of a fuel cell system according to an embodiment of the present invention.
Figure 3 is a flow chart driving flowchart according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the automatic gas-liquid separation apparatus and method of the present invention fuel cell system will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as exemplifications of the constituent elements set forth in the claims of the present invention, and are included in technical ideas throughout the specification of the present invention, Embodiments that include components replaceable as equivalents in the elements may be included within the scope of the present invention.

Example

2 is a configuration diagram of an automatic gas-liquid separation device of a fuel cell system according to an embodiment of the present invention, Figure 3 is a flow chart driving flow chart according to an embodiment of the present invention.

As shown in FIG. 2, the automatic gas-liquid separator (hereinafter, the 'automatic gas-liquid separator') 100 of the fuel cell system according to an embodiment of the present invention includes a plurality of gas-liquid separators 200 installed in the fuel cell system. And a condensate vessel 300 for collecting and storing the condensate separated from the gas-liquid separator 200, and a circulation pump 311 installed in the discharge line 310 of the condensate vessel 300.

Here, the gas-liquid separator 200 is for condensing and separating water contained in the fuel gas discharged or supplied to the anode without reacting at the anode of the fuel cell stack 700. In FIG. 2, three gas-liquid separators 200 are shown. Although illustrated an example is installed, the conventional fuel cell system is provided with four to five gas-liquid separator 200, of course, can be appropriately selected the number of gas-liquid separator 200 is installed as needed.

In addition, the gas-liquid separator 200 stores the water separated from the introduced gas therein, and has a water level sensor 210 for detecting the level of the stored water.

The condensate vessel 300 collects and stores the condensate separated from the gas-liquid separator 200, and is connected by the respective gas-liquid separator 200 and the condensate line 220, and is made of a sealed container to block contact with the atmosphere. .

That is, the plurality of gas-liquid separators 200 are connected to the condensate vessel 300 by a separate condensate line 220, and thus the condensate separated and stored in the gas-liquid separator 200 is condensate vessels (through the condensate line 220). 300).

However, as the condensate vessel 300 has an inner space enclosed with the atmosphere, an internal pressure is formed in the inner space of the condensate vessel 300, and the flow of the condensate through the condensate line 220 is usually due to the internal pressure. Is prevented.

The condensate separated and stored in the plurality of gas-liquid separators 200 is introduced into the condensate vessel 300 through the condensate line 220 by the driving of the circulation pump 311, and the circulation pump 311 is a condensate vessel ( The condensate stored in the 300 is to be discharged to the outside of the condensate vessel 300 through the discharge line 310 of the condensate vessel 300.

That is, when the condensate is discharged from the condensate vessel 300 by the operation of the circulation pump 311, the condensate line separated and stored in each gas-liquid separator 200 while the internal pressure of the condensate vessel 300 is reduced by the siphon principle Along with 220 is to be drawn to the condensate vessel 300.

Therefore, in the related art, as the condensate flows from the gas-liquid separator 200 to the condensate vessel 300 by gravity, the gas-liquid separator 200 has to be installed at a position higher than that of the condensate vessel 300. According to the automatic gas-liquid separation apparatus 100 according to the embodiment, since the internal pressure of the condensate vessel 300 is reduced by driving the circulation pump 311 to guide the condensate to the condensate vessel 300 by the siphon principle. Overcome design limitations.

In addition, since the circulation pump 311 installed in the discharge line 310 of the condensate vessel 300 can be used as a water treatment system pump provided in the fuel cell system, no separate installation space or installation cost is required. .

That is, the discharge line 310 of the condensate vessel 300 is connected to the ultrapure water vessel 400 storing the water-treated condensate, and the water treatment filter 312 is installed along with the circulation pump 311 in the discharge line 310. Accordingly, the water treatment system of the fuel cell system may be configured such that the condensed water that has been treated through the water treatment filter 312 from the condensate vessel 300 when the circulation pump 311 is driven flows into the ultrapure water vessel 400.

At this time, the condensed water that is water-treated and stored in the ultrapure water vessel 400 as pure water is operated by a fuel cell system such as steam reaction of a reformer (not shown), humidification of the fuel cell stack 700, or cooling water of the fuel cell stack 700. It can be used as pure water for.

 The circulation pump 311 is driven by the water level sensor 210 provided in each gas-liquid separator 200. That is, when the condensate separated and stored in the gas-liquid separator 200 exceeds a predetermined level, the circulating pump 311 is operated so that the condensed water of the gas-liquid separator 200 flows into the condensate vessel 300, and the condensed water from the gas-liquid separator 200. If the water is continuously discharged and the level of the condensate stored in the gas-liquid separator 200 is lower than the predetermined level, the operation of the circulation pump 311 is stopped so that no more condensate flows into the condensate vessel 300.

At this time, the water level for driving and stopping the circulation pump 311 is input to the controller 600 installed on one side of the circulation pump 311 as a preset value, a plurality of gas-liquid separator 200 as shown in FIG. When the water level measured by each of the water level sensors 210 installed in each of the set value or more (S10), the drive of the circulation pump 311 by the controller 600 is started (S20).

Thereafter, the condensed water stored in the condensate vessel 300 by the operation of the circulation pump 311 is introduced into the ultrapure water vessel 400 through the water treatment filter 312, in which the siphon principle according to the decrease in the internal pressure of the condensate vessel 300 As a result, the condensed water stored in each gas-liquid separator 200 is introduced into the condensed water vessel 300 through the condensed water line 220.

At this time, even if the gas of the gas-liquid separator 200 flows into the condensate vessel 300 through the condensate line 220, the condensate stored in the condensate vessel 300 is prevented from flowing toward the ultrapure water vessel 400. To this end, the discharge line 310 of the condensate vessel 300 connected to the ultrapure water vessel 400 is preferably installed lower than the water level of the condensate stored in the condensate vessel 300.

If the condensed water stored in the gas-liquid separator 200 continues to be discharged to the condensate vessel 300 through the condensate line 220, the condensed water level of the gas-liquid separator 200 is lowered, any one of the plurality of gas-liquid separator 200 When the condensate level in the gas-liquid separator 200 falls below the set point (S30), the operation of the circulation pump 311 is stopped by the controller 600 (S40), and the condensate is no longer the ultrapure water vessel 400 and the condensate vessel ( 300) will not flow into.

 At this time, the flow rate flowing into the condensate vessel 300 simultaneously through each condensate line 220 is preferably the same, because the flow rate of the pipe is proportional to the square of the diameter (continuous mass preservation), the diameter of the condensate line 220 Is preferably selected by the following equation according to the pressure of the gas-liquid separator 200 to which each condensate line 220 is connected.

P _N × D _N ² = C

Where P is the pressure of the gas-liquid separator, D is the diameter, C is the constant, and N is 1,2,3...

That is, the diameter of the condensate line 220 is preferably selected such that the square value is inversely proportional to the pressure value of the gas-liquid separator 200 to which the condensate line 220 is connected.

In addition, since the condensate vessel 300 has a closed inner space, the condensate stored in the condensate vessel 300 is blocked from contact with the air, so that the water quality can be easily managed.

On the other hand, in the case of the ultrapure water vessel 400, when the air flowing into the ultrapure water vessel 400 comes into contact with pure water stored in the ultrapure water vessel 400, carbon dioxide in the atmosphere is dissolved to affect ion solubility or conductivity of the pure water. There is a fear of degrading the overall performance of the fuel cell system.

In order to solve this problem, the ultrapure water vessel 400 may be completely sealed or further provided with an ion remover capable of actively removing ions such as carbonic acid.

However, when the ultrapure water vessel 400 is completely sealed, internal pressure fluctuations occur due to internal temperature changes, and thus, there is a difficulty in supplying pure water stored therein or introducing new pure water.

In addition, when the ion eliminator is further provided, the electric energy required to operate the ion eliminator is consumed, and thus, the electric energy generated from the fuel cell can only be partially used to operate the ion eliminator, thereby lowering the power generation efficiency of the fuel cell. There is a problem that the manufacturing cost is increased according to the addition of.

To solve this problem, the ultrapure water vessel 400 according to an embodiment of the present invention is opened to the atmosphere to facilitate the pure water supply to each part of the fuel cell system, and an atmospheric pressure is formed therein, and the pure water stored in the ultrapure water vessel 400 is By forming a nitrogen curtain on the upper side to prevent contact with the atmosphere, it will be described in detail below.

As shown in FIG. 2, an air blocking casing member 500 is installed on the ultrapure water vessel 400. At this time, the air blocking casing member 500 has a space therein so that the nitrogen curtain 520 is formed by the supply of nitrogen gas.

The ultrapure water vessel 400 and the air blocking casing member 500 are communicated by the pressure regulating tube 410, for example, the upper side of the ultrapure water vessel 400 and the lower side of the air blocking casing member 500 are pressure regulating tubes ( 410 may be communicated, and the pressure control tube 410 may maintain the ultrapure water vessel 400 inside the atmospheric pressure.

Air blocking casing member 500 is provided with a gas discharge pipe 510, it is preferable that the air blocking casing member 500 is provided to communicate with the atmosphere above. That is, the ultrapure water vessel 400 is in communication with the air blocking casing member 500 through the pressure control pipe 410, the air blocking casing member 500 is in communication with the atmosphere by the gas discharge pipe 510, thus, the ultrapure water vessel The internal pressure of 400 is maintained at a constant atmospheric pressure regardless of temperature, the inflow and discharge of pure water is made smoothly.

Nitrogen gas supply pipe 230 is installed in one side of the air blocking casing member 500, the nitrogen gas is introduced into the air blocking casing member 500 through the nitrogen gas supply pipe 230, the outside atmosphere is A nitrogen curtain 520 in the form of a gas barrier layer that blocks the ultrapure water vessel 400 from being introduced into the vessel is formed.

That is, the nitrogen curtain 520 is formed between the pressure control pipe 410 of the ultrapure water vessel 400 and the gas discharge pipe 510 of the air blocking casing member 500, the outside atmosphere is introduced into the ultrapure water vessel 400 To block things.

At this time, when the internal temperature of the ultrapure water vessel 400 rises and the internal pressure of the ultrapure water vessel 400 becomes higher than atmospheric pressure, the air inside the ultrapure water vessel 400 passes through the pressure regulating tube 410 to block the air blocking casing member 500. After being introduced into), it is discharged to the outside through the gas discharge pipe 510.

In addition, when the internal temperature of the ultrapure water vessel 400 decreases and the internal pressure of the ultrapure water vessel 400 is lower than atmospheric pressure, the nitrogen gas forming the nitrogen curtain 520 in the air blocking casing member 500 is a pressure control tube ( Nitrogen curtain 520 is formed again on the upper portion of the pure water stored after flowing into the ultrapure water vessel 400 through 410, thereby preventing contact between pure water stored in the ultrapure water vessel 400 and the atmosphere.

At this time, the above-described nitrogen curtain 520 is formed by the supply of nitrogen gas discharged from the cathode of the fuel cell stack 700, the nitrogen gas is any of the plurality of gas-liquid separator 200 as shown in FIG. After the water is separated from the one is preferably supplied to the air blocking casing member 500 through the nitrogen gas supply pipe 230.

Referring to Figures 2 and 3 will be described the automatic gas-liquid separation method of the fuel cell system according to an embodiment of the present invention.

The ultra-pure water vessel 400 in which the condensate vessel 300 is sealed to the atmosphere and the plurality of gas-liquid separators 200 by the plurality of condensate lines 220, respectively, and the discharge line 310 of the condensate vessel 300 is open to the atmosphere. ), The discharge line 310 is provided with a water treatment filter 312 and the circulation pump (311).

At this time, the diameter of the condensate line 220 is appropriately selected according to the pressure of the connected gas-liquid separator 200 so that the flow rate flowing into the condensate vessel 300 through each condensate line 220 is the same.

The water level of the condensate separated and stored in the plurality of gas-liquid separators 200 is sensed by the water level sensor 210, and when the condensed water levels of all the gas-liquid separators 200 are greater than or equal to a set value, the driving of the circulation pump 311 is started.

When the circulation pump 311 is driven, the condensed water stored in the condensate vessel 300 is introduced into the ultrapure water vessel 400 through the water treatment filter 312, and the condensate vessel 300 is sealed with the atmosphere, thereby reducing the internal pressure. do.

Accordingly, the condensate separated and stored in each gas-liquid separator 200 is introduced into the condensate vessel 300 by the siphon principle, and any one of the plurality of gas-liquid separators 200 is discharged to the condensate vessel 300. When the water level falls below the set value, the driving of the circulation pump 311 is stopped.

On the other hand, the upper portion of the ultra-pure water vessel 400 is connected to each other by the pressure control tube 410 and the air blocking casing member 500 having a gas discharge pipe 510 is provided on the upper, the air blocking casing member 500 The nitrogen gas discharged from the fuel cell stack 700 is introduced through the nitrogen gas supply pipe 230 after the water is separated through any one of the plurality of gas-liquid separators 200.

At this time, the nitrogen gas introduced into the air blocking casing member 500 forms a nitrogen curtain 520 between the pressure control pipe 410 and the gas discharge pipe 510, by the nitrogen curtain 520, the ultrapure water vessel ( Contact between the pure water and the air stored in the 400 is prevented, so that the water quality of the pure water can be kept constant.

100: automatic gas-liquid separator 200: gas-liquid separator
210: water level sensor 220: condensate line
230: nitrogen gas supply pipe 300: condensate vessel
310: discharge line 311: circulation pump
312: water treatment filter 400: ultrapure water vessel
410: pressure control pipe 500: air blocking casing member
510: gas discharge pipe 520: nitrogen curtain
600 controller 700 fuel cell stack

Claims (18)

A plurality of gas-liquid separators 200 installed in the fuel cell system;
A condensate vessel 300 connected to each of the plurality of gas-liquid separators 200 and the plurality of condensate lines 220 and storing the condensed water separated from the plurality of gas-liquid separators 200 in an airtight interior space; And
It includes a circulation pump 311 is installed in the discharge line 310 of the condensate vessel 300,
A fuel cell, characterized in that the condensed water separated from the plurality of gas-liquid separator 200 is introduced into the condensate vessel 300 through the plurality of condensate line 220 by the siphon principle when the circulation pump 311 is driven. Automatic gas-liquid separator of the system.
The method according to claim 1,
A fuel cell further comprises an ultrapure water vessel 400 connected to the discharge line 310 of the condensate vessel 300 and into which the condensed water of the condensate vessel 300 is introduced when the circulation pump 311 is driven. Automatic gas-liquid separator of the system.
The method according to claim 1,
It is installed on one side of the circulation pump 311, characterized in that it further comprises a controller 600 for controlling the driving of the circulation pump 311 according to the water level of the condensate separated in the plurality of gas-liquid separator 200 Automatic gas-liquid separation device of a fuel cell system.
The method of claim 1, wherein the plurality of condensate line 220,
Automatic gas-liquid separator of a fuel cell system, characterized in that the square value of the diameter is inversely proportional to the internal pressure of each gas-liquid separator (200).
The method according to claim 1,
Automatic gas-liquid separation device of a fuel cell system, characterized in that the water treatment filter 312 is installed in the discharge line (310).
The method according to claim 2,
An air blocking casing member 500 is installed on the ultrapure water vessel 400, and the ultrapure water vessel 400 and the air blocking casing member 500 are communicated by a pressure control tube 510. Automatic gas-liquid separator of fuel cell system.
The method of claim 6,
A gas discharge pipe 510 is provided at an upper side of the air blocking casing member 500 to open the air, and inside the air blocking casing member 500 to prevent atmospheric contact of pure water stored in the ultrapure water vessel 400. Automatic gas-liquid separation device of a fuel cell system, characterized in that the nitrogen curtain (520) is formed.
The method of claim 7,
Automatic gas-liquid separation device of a fuel cell system, characterized in that the nitrogen curtain (520) is formed inside the air blocking casing member (500) by the nitrogen gas discharged from the fuel cell stack (700).
The method according to claim 8,
Nitrogen gas supply pipe 230 is in communication with one side of the air blocking casing member 500, the nitrogen gas supply pipe 230 is connected to the fuel cell stack 700, automatic gas-liquid separation of the fuel cell system Device.
Gas-liquid separation of the gas discharged from each part of the fuel cell system by the plurality of gas-liquid separators 200;
Storing the condensed water separated by the plurality of gas-liquid separators 200 in the condensed water vessel 300 sealed with air; And
And transferring the condensed water stored in the condensate vessel 200 to an ultrapure water vessel 400 that is open to the atmosphere.
The method of claim 10,
The condensate separated by the plurality of gas-liquid separators 200 is driven by the circulating pump 311 installed at one side of the condensate vessel 300, and the condensate vessel 300 and the ultrapure water vessel 400 are based on a siphon principle. An automatic gas-liquid separation method of a fuel cell system, characterized in that flowing to.
The method of claim 10,
In the process of transferring the condensed water stored in the condensate vessel 300 to the ultra-pure water vessel 400, passing through the water treatment filter 312 installed in the discharge line 310 of the condensate vessel 300; An automatic gas-liquid separation method of a fuel cell system, characterized in that.
The method of claim 11,
Driving of the circulation pump (311) is automatic gas-liquid separation method of the fuel cell system, characterized in that when the water level of the condensate separated in the plurality of gas-liquid separator 200 all above the set value.
The method of claim 11,
The operation of the circulation pump (311) is automatic gas-liquid separation method of the fuel cell system, characterized in that when the water level of the condensate separated in any one of the plurality of gas-liquid separator 200 is less than the set value.
The method of claim 10,
The air blocking casing member 500 is installed on the ultrapure water vessel 400, and the ultra pure water vessel 400 and the air blocking casing member 500 are communicated by a pressure control tube 510. Automatic gas-liquid separation method of a fuel cell system.
16. The method of claim 15,
The gas discharge pipe 510 is installed on the upper side of the air blocking casing member 500 to open the air, and inside the air blocking casing member 500 to prevent atmospheric contact of pure water stored in the ultrapure water vessel 400. Method for automatic gas-liquid separation of the fuel cell system, characterized in that to form a nitrogen curtain (520).
18. The method of claim 16,
Method for separating an automatic gas-liquid of the fuel cell system, characterized in that to form the nitrogen curtain (520) in the interior of the air blocking casing member (500) by the nitrogen gas discharged from the fuel cell stack (700).
18. The method of claim 17,
The nitrogen gas supply pipe 230 is connected to one side of the air blocking casing member 500, and the nitrogen gas supply pipe 230 is connected to the fuel cell stack 700. Way.

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