CN214597750U - Hydrogen-water separation device and hydrogen-oxygen fuel cell system - Google Patents
Hydrogen-water separation device and hydrogen-oxygen fuel cell system Download PDFInfo
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- CN214597750U CN214597750U CN202121444774.5U CN202121444774U CN214597750U CN 214597750 U CN214597750 U CN 214597750U CN 202121444774 U CN202121444774 U CN 202121444774U CN 214597750 U CN214597750 U CN 214597750U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/30—Hydrogen technology
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Abstract
The utility model discloses a hydrogen water separator and hydrogen oxygen fuel cell system, hydrogen water separator's casing inboard includes the hydrogen water separation chamber, the water catch bowl, the row of hydrogen pipeline and sweep the branch road, the lateral wall of casing is offered and is used for the inlet port of intercommunication hydrogen water separation chamber lower part and galvanic pile hydrogen export and is used for the intercommunication to sweep the venthole of branch road and galvanic pile air outlet, it is equipped with the purge valve in the branch road to sweep, be equipped with a plurality of column plates in the hydrogen water separation chamber, and a plurality of column plates from bottom to top interval arrangement each other and leave the gas flow channel of mutual intercommunication, it has the baffle and communicates each other through the intercommunicating pore to arrange between water catch bowl and the hydrogen water separation chamber, the lower extreme of water catch bowl is equipped with the drain valve. The hydrogen-water separation device that this scheme provided collects hydrogen-water separation, sweeps, functions in an organic whole such as drainage to reduced coupling quantity, reduced the risk of hydrogen leakage, improved hydrogen-water separation effect, can also improve the utilization ratio of hydrogen, reduce the cold start-up time of low temperature.
Description
Technical Field
The utility model relates to a new energy vehicle technical field especially relates to a hydrogen water separator and an oxyhydrogen fuel cell system.
Background
With the rapid development of society, social problems such as energy exhaustion and environmental deterioration are increasingly prominent, and the hydrogen-oxygen fuel cell with the characteristics of cleanness and high efficiency is concerned. The hydrogen-oxygen fuel cell is a device for directly converting chemical energy of fuel into electric energy, in the fuel cell an electrolyte membrane separates hydrogen gas and oxygen gas from space, the hydrogen gas is oxidized under the action of catalyst to produce hydrogen proton and electron, the electron is passed through external circuit and reached to cathode to form current for working, the hydrogen proton is passed through electrolyte membrane and reached to cathode and combined with oxygen gas produced by reduction reaction to produce water, so that the fuel cell can continuously produce electric energy as long as the fuel is continuously supplied. Since water produced at the cathode may permeate through the electrolyte membrane to the anode, when unreacted hydrogen is exhausted from the fuel cell stack, the hydrogen may entrain some of the reaction products water and contaminant N2And one part of the discharged hydrogen is discharged to an air outlet of the electric pile through a hydrogen discharge valve, is mixed with air and is discharged to the atmosphere, and the other part of the hydrogen enters the electric pile through a hydrogen circulating pump for recycling. If not get rid of the liquid water of smuggleing secretly in the hydrogen, on the one hand liquid water can make the efficiency of hydrogen circulating pump descend, and on the other hand liquid water that accumulates in the hydrogen valve can only be discharged by hydrogen purging, and this can consume a large amount of hydrogen for hydrogen utilization ratio reduces, increases use cost, and liquid water freezes and can block up the orifice and increase cold start response time when low temperature operation moreover.
To hydrogen water separation problem among the oxyhydrogen fuel cell, the most commonly used solution at present is to utilize the purge valve to blow down the hydrogen valve regularly or install hydrogen water separator before the hydrogen circulating pump, and purge valve and hydrogen water separator are separately arranged, and rubber tube and clamp are used commonly and are connected and fixed, and this can increase the risk that hydrogen was revealed, also can make the galvanic pile box space more narrow and be unfavorable for the maintenance.
Therefore, how to improve the hydrogen-water separation effect and improve the hydrogen utilization rate is a technical problem that needs to be solved by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a hydrogen water separator for improve hydrogen water separation effect and improve hydrogen utilization ratio. Another object of the present invention is to provide an oxyhydrogen fuel cell system including the above hydrogen-water separation device.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a hydrogen-water separation device comprises a shell, wherein the inner side of the shell comprises a hydrogen-water separation cavity, a water collecting tank positioned below the hydrogen-water separation cavity and a hydrogen discharge pipeline communicated with the upper end of the hydrogen-water separation cavity, the inner side of the shell is also provided with a sweeping branch communicated with one side of the hydrogen discharge pipeline, the side wall of the shell is provided with an air inlet used for communicating the lower part of the hydrogen water separation cavity with the hydrogen outlet of the galvanic pile, the side wall of the shell is provided with an air outlet hole for communicating the purging branch and the air outlet of the electric pile, a purging valve is arranged in the purging branch, a plurality of tower plates are arranged in the hydrogen-water separation cavity, and a plurality of the tower plates are arranged from bottom to top at intervals and are provided with gas flow channels which are communicated with each other, the water catch bowl with set up the baffle and communicate each other through the intercommunicating pore between the hydrogen water separation chamber, the lower extreme of water catch bowl is equipped with the drain valve.
Preferably, the upper and/or lower side surfaces of the trays are arranged inclined with respect to the horizontal.
Preferably, the cross-section of the trays is wedge-shaped.
Preferably, a plurality of the tower plates are distributed on the inner walls of the two sides of the hydrogen water separation cavity in a staggered manner.
Preferably, the bottom surface of the water collecting tank is obliquely arranged relative to the horizontal plane, and the drain valve is positioned at the lowest part of the bottom surface of the water collecting tank.
Preferably, the drain valve is a one-way solenoid drain valve.
Preferably, the peripheral edge of baffle with hydrogen water separation chamber links to each other, and at least one side edge of baffle is equipped with a plurality of breachs, the breach with the inner wall in hydrogen water separation chamber encloses into the intercommunicating pore.
Preferably, a first liquid level sensor and a second liquid level sensor which are separated by a preset distance are arranged in the water collecting tank along the depth direction.
Preferably, a filter is arranged at the joint of the purging branch and the hydrogen discharge pipeline.
Preferably, the air outlet is provided with a throttle valve.
Preferably, a heating device is attached to the outer wall of the housing.
The utility model provides a hydrogen water separator, which comprises a housin, the casing inboard includes hydrogen water separation chamber, be located the water catch bowl of hydrogen water separation chamber below and communicate in the hydrogen pipe way of hydrogen water separation chamber upper end, the casing inboard still is equipped with the branch road that sweeps that communicates in hydrogen pipe way one side, the inlet port that is used for intercommunication hydrogen water separation chamber lower part and galvanic pile hydrogen export is offered to the lateral wall of casing, the venthole that is used for the intercommunication to sweep branch road and galvanic pile air outlet is offered to the lateral wall of casing, it is equipped with the purge valve in the branch road to sweep, hydrogen water separation intracavity is equipped with a plurality of column plates, and a plurality of column plates from bottom to top are interval arrangement each other and leave the gas flow channel of mutual intercommunication, arranged the baffle and communicate each other through the intercommunicating pore between water catch bowl and the hydrogen water separation chamber, the lower extreme of water catch bowl is equipped with the drain valve.
The utility model provides a hydrogen water separator's theory of operation as follows:
the hydrogen mixture that is discharged by pile hydrogen export secretly liquid water gets into this hydrogen water separator's hydrogen water separation intracavity from the inlet port, hydrogen with pressure upwards or move forward and collide hydrogen water separation intracavity wall and column plate, because the density of gas and liquid is different, gas can be compelled to change the direction of motion and walk around each column plate, continue upward movement along gas flow channel, liquid water then can flow downwards along column plate and hydrogen water separation intracavity wall, finally, gas-liquid mixture separates into the hydrogen part that uses gas as the owner and the liquid water part that uses liquid as the owner, hydrogen mainly returns pile hydrogen entry through the hydrogen discharge pipeline and realizes cyclic utilization, liquid water then mainly gathers in the water catch bowl. The purging valve in the purging branch can be opened and closed timely according to system requirements, so that hydrogen containing liquid water and impurities is purged timely. The drain valve can also be opened and closed in good time according to the system requirements, so that liquid water in the water collecting tank can be discharged in time.
According to the above technical scheme, the utility model discloses a column plate of a plurality of interval arrangements realizes hydrogen water autosegregation to hydrogen water mixture's the effect of blocking, has improved the hydrogen water separation effect. Because the hydrogen after each column plate of flowing through compares the water content with the hydrogen of inlet opening department and obviously reduces, consequently, only has a small amount of liquid water or does not have liquid water to be detained in sweeping the branch road, compare in prior art, the utility model discloses use hydrogen still less just can sweep impurity such as hydrogen and liquid water to the air outlet of galvanic pile to improve the utilization ratio of hydrogen, reduce the cold start-up time of low temperature.
The utility model discloses following beneficial effect has:
1) the hydrogen-water separation device provided by the utility model integrates the functions of hydrogen-water separation, purging, water drainage and the like, reduces the number of pipe joints and reduces the risk of hydrogen leakage;
2) the utility model can automatically realize the high-efficiency separation of hydrogen and liquid water by utilizing the blocking effect of the tower plate;
3) the utility model is provided with a blowing branch and a blowing valve in the shell, and only a small amount of liquid water or no liquid water is stored in the blowing branch, thus greatly reducing the hydrogen consumption during blowing and improving the hydrogen utilization rate;
4) the utility model discloses impurity such as liquid water is in time swept to usable purge valve to can utilize the drain valve to discharge totally with the water in the water catch bowl when shutting down, thereby can reduce cold start response time under the low temperature operating mode.
The utility model also provides a hydrogen-oxygen fuel cell system, include as above hydrogen-water separator. The derivation process of the beneficial effects of the hydrogen-oxygen fuel cell system is substantially similar to the derivation process of the beneficial effects of the hydrogen-water separation device, and therefore, the description is omitted.
In a preferred embodiment, the hydrogen-oxygen fuel cell system further comprises a voltage detection device for detecting the output voltage of the stack and a hydrogen concentration sensor for detecting the concentration of hydrogen discharged from the tail of the stack.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a hydrogen-water separation device in an embodiment of the present invention;
fig. 2 is a cross-sectional view of a hydrogen-water separation device in an embodiment of the present invention;
fig. 3 is a rear view of a hydrogen-water separation device according to an embodiment of the present invention;
fig. 4 is a flowchart of a control strategy of the hydrogen-water separation device according to an embodiment of the present invention.
The meaning of the various reference numerals in figures 1 to 3 is as follows:
the device comprises a shell 1, a shell 2, an air inlet 2, an air outlet 3, a water collecting tank 4, a hydrogen-water separation cavity 5, a hydrogen discharge pipeline 6, a purging branch 7, a filter 8, a tower plate 9, a partition plate 10, a first liquid level sensor 11, a second liquid level sensor 12, a drain valve 13, a hydrogen outlet pipe joint 14, a purging valve 15 and a communicating hole 16.
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 only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 3, fig. 1 to 3 are a front view, a sectional view and a back view of a hydrogen water separation device according to an embodiment of the present invention.
The utility model provides a be applied to hydrogen water separator among oxyhydrogen fuel cell system, the device collect hydrogen water separation, sweep and function in an organic whole such as drainage to solve hydrogen water separation difficult, the choke valve easily blocks up, the narrow scheduling problem in box overall arrangement space, reduce cold start response time and reduce the hydrogen leakage risk simultaneously, improve the hydrogen utilization ratio, reduce the energy consumption.
The hydrogen-water separation device comprises a shell 1, wherein the inner side of the shell 1 comprises a hydrogen-water separation cavity 5, a water collecting tank 4 positioned below the hydrogen-water separation cavity 5 and a hydrogen discharge pipeline 6 communicated with the upper end of the hydrogen-water separation cavity 5, the inner side of the shell 1 is also provided with a purging branch 7 communicated with one side of the hydrogen discharge pipeline 6, the side wall of the shell 1 is provided with an air inlet 2 used for communicating the lower part of the hydrogen-water separation cavity 5 with a hydrogen outlet of a galvanic pile, the side wall of the shell 1 is provided with an air outlet 3 used for communicating the purging branch 7 with the air outlet of the galvanic pile, a purging valve 15 is arranged in the purging branch 7, a plurality of tower plates 9 are arranged in the hydrogen-water separation cavity 5, and a plurality of tower plates 9 are arranged from bottom to top at intervals and are provided with gas flow channels which are communicated with each other, a partition plate 10 is arranged between the water collecting tank 4 and the hydrogen-water separation chamber 5 and is communicated with each other through a communication hole 16, and the lower end of the water collecting tank 4 is provided with a drain valve 13.
The utility model provides a hydrogen water separator's theory of operation as follows:
the hydrogen mixture which is discharged from the hydrogen outlet of the galvanic pile and carries liquid water enters the hydrogen water separation cavity 5 of the hydrogen water separation device from the air inlet hole 2, the hydrogen with pressure moves upwards or forwards and collides with the inner wall of the hydrogen water separation cavity 5 and the tower plates 9, due to different densities of gas and liquid, the gas can be forced to change the moving direction and bypass each tower plate 9, the hydrogen continues to move upwards along the gas flow channel, the liquid water can flow downwards along the tower plates 9 and the inner wall of the hydrogen water separation cavity 5, finally, the gas-liquid mixture is separated into a hydrogen part which takes the gas as the main part and a liquid water part which takes the liquid as the main part, the hydrogen mainly returns to the hydrogen inlet of the galvanic pile through the hydrogen discharge pipeline 6 to realize cyclic utilization, and the liquid water is mainly gathered in the water collecting tank 4. The purging valve 15 in the purging branch 7 can be opened and closed timely according to the system requirement, so that the hydrogen containing liquid water and impurities can be purged timely. The drain valve 13 can be opened and closed in due time according to the system requirements, so that the liquid water in the water collecting tank 4 can be drained in time.
According to the above technical scheme, the utility model discloses a tower plate 9 of a plurality of interval arrangements realizes hydrogen water autosegregation to hydrogen water mixture's the effect of blocking, has improved the hydrogen water separation effect. Because the hydrogen after each column plate 9 of flowing through compares the water content with the hydrogen of inlet port 2 department and obviously reduces, consequently, only has a small amount of liquid water or does not have liquid water to be detained in sweeping branch 7, compare in prior art, the utility model discloses use hydrogen still less just can sweep impurity such as hydrogen and liquid water to pile air outlet to improve the utilization ratio of hydrogen, reduce the cold start-up time of low temperature.
It should be noted that, the separated hydrogen mainly enters the hydrogen circulation pump from the hydrogen discharge pipeline 6 and then enters the galvanic pile again for recycling, and for convenience of pipeline connection, the part of the hydrogen discharge pipeline 6 extending out of the casing 1 is designed as a hydrogen outlet pipe joint 14, as shown in fig. 3.
It should be noted that, the air inlet 2 provided on the side wall of the casing 1 directly contacts with the hydrogen outlet of the galvanic pile, so that the pipeline connection can be reduced, and the risk of hydrogen leakage can be reduced. Specifically, the sealing washer of usable pile hydrogen outlet pipeline department of inlet port 2 realizes with pile hydrogen export's sealing connection, avoids hydrogen to leak, improves the safety in utilization.
The venthole 3 intercommunication hydrogen water separator sweep branch 7 and outside galvanic pile air outlet, and hydrogen can sweep and directly discharge the galvanic pile air outlet through venthole 3 through sweeping valve 15, reduces the tube coupling, reduces hydrogen and leaks the risk. Similar with the mode of setting up of inlet port 2, venthole 3 also can utilize the sealing washer of pile air outlet pipeline department to realize with pile air outlet's sealing connection, avoids hydrogen to leak, improves the safety in utilization.
Further preferably, this scheme is provided with the choke valve in venthole 3 department, when sweeping valve 15 and sweeping, sweeps branch road 7 and communicates with each other with external pile air outlet, sets up the choke valve in venthole 3 department and can avoid sweeping branch road 7 and take place violent change together with the pressure in the hydrogen water separation chamber 5, guarantees to have stable pressure in the hydrogen water separation chamber 5.
Preferably, a filter 8 is disposed at the connection of the purging branch 7 and the hydrogen exhaust pipeline 6 for filtering out some solid impurities in the gas.
Further preferably, the purge valve 15 in this scheme adopts the detachable mode installation to be fixed in casing 1, and the later maintenance of being convenient for and the filter 8 of changing in the branch road 7 of sweeping are maintained.
Preferably, the upper and/or lower side surfaces of the tray 9 are arranged inclined with respect to the horizontal. Gather after the moisture condensation in the hydrogen and form liquid water on column plate 9, through the face of arranging for the slope with the upside surface and/or the downside surface design of column plate 9, can be convenient for the collection and the flow of liquid comdenstion water more to be convenient for in liquid water drips the water catch bowl 4 to the below, and then improve hydrogen water separation's efficiency and hydrogen water separation effect.
Further preferably, the cross-section of the tray 9 is wedge-shaped. As shown in fig. 2, the upper and lower side surfaces of the tray 9 are inclined with respect to the horizontal plane, so as to form a structure having a certain draft angle, that is, the upper and lower side surfaces of the tray 9 have a certain inclination angle, which further facilitates the collection of the liquid condensate.
It should be noted that the tower plates 9 can be arranged inside the hydrogen water separation chamber 5 at intervals from bottom to top in various forms, for example, the end of the tower plate 9 can be fixed on the inner wall of the hydrogen water separation chamber 5, or the peripheral edges of the tower plates 9 are not connected with the inner wall of the hydrogen water separation chamber 5, but the tower plates 9 are connected through intermediate connecting rods and fixed on the upper end or the lower end of the hydrogen water separation chamber 5 by the intermediate connecting rods, etc.
In a preferred scheme, as shown in fig. 2, a plurality of tower plates 9 in the scheme are distributed on the inner walls of two sides of the hydrogen water separation cavity 5 in a staggered manner, specifically, one end of each tower plate 9 is fixedly connected to the inner wall of one side of the hydrogen water separation cavity, and the other end of each tower plate 9 has a spacing distance with the inner wall of the hydrogen water separation cavity 5 on the opposite side, so as to ensure that the gas flow channels on the upper side and the lower side of each tower plate 9 can be communicated, and two adjacent tower plates 9 are respectively located on the inner walls of two sides of the hydrogen water separation cavity 5, so that a staggered structure as shown in fig. 2 is formed. So arranged, the gas flow channel is roughly in a serpentine shape of reciprocating bends, and the gas flow channel is the only channel through which the gas can pass, which enables the hydrogen water mixture to collide with the tower plate 9 and be forced to change the direction of movement more times, thereby efficiently achieving hydrogen water separation. The gas is divided into two paths after passing through a plurality of tower plates 9, one path of the gas enters a hydrogen circulating pump through a hydrogen discharge pipeline 6 and then enters the galvanic pile again to realize cyclic utilization, and the other path of the gas enters a purging branch 7, is purged and discharged to an air outlet of the galvanic pile through a purging valve 15, and is mixed with tail discharge air and then discharged to the atmospheric environment.
It should be noted that a partition plate 10 is arranged between the water collecting tank 4 and the hydrogen-water separation chamber 5 and is communicated with each other through a communication hole 16, wherein the communication hole 16 may be designed in various forms, for example, the communication hole 16 is directly formed on the partition plate 10; or, a plurality of gaps are arranged on the edge of the partition plate 10, and the gaps and the inner wall of the hydrogen-water separation cavity 5 jointly form a communication hole 16; or, the communication hole 16 is formed in the side wall of the hydrogen water separation chamber 5, in this case, the communication hole 16 may be designed as a bent hole, one end of the communication hole 16 is communicated with the hydrogen water separation chamber 5, and the other end is communicated with the water collection tank 4; and so on. As shown in fig. 2, in a preferred embodiment, the peripheral edge of the partition board 10 in this embodiment is connected to the inner wall of the hydrogen water separation chamber 5, and at least one side edge of the partition board 10 is provided with a plurality of notches, which surround the communication hole 16 with the inner wall of the hydrogen water separation chamber 5. Specifically, the edge of the partition board 10 may be provided with a plurality of semicircular notches, and when the partition board 10 is assembled with the hydrogen-water separation chamber 5, the semicircular notches and the side wall of the hydrogen-water separation chamber 5 jointly enclose a semicircular communication hole 16.
Preferably, the bottom surface of the water collection sump 4 is arranged inclined with respect to the horizontal, and the drain valve 13 is located at the lowest position of the bottom surface of the water collection sump 4. So set up, can make the liquid water that flows into water catch bowl 4 collect to the lowest along the tank bottom face of slope, simultaneously, set up drain valve 13 in the lowest of tank bottom face, just can make things convenient for the drainage operation more.
It is further preferred that the drain valve 13 is a one-way solenoid drain valve, which further prevents backflow of liquid water. Of course, the drain valve 13 may also adopt other types of valves such as a pneumatic drain valve and an electric drain valve, and both can realize the drain function, and the working principle thereof is not described herein again.
Preferably, a first liquid level sensor 11 and a second liquid level sensor 12 which are separated by a preset distance are arranged in the water collecting tank 4 along the depth direction and are respectively used for detecting the depth of liquid water at different positions in the water collecting tank 4, the opening or closing of the drain valve 13 can be controlled through a liquid level detection signal, the influence on the hydrogen flowing and the hydrogen pressure in the hydrogen water separation cavity 5 during water drainage is reduced, and the stable pressure in the hydrogen water separation cavity 5 is ensured.
It should be noted that, the first liquid level sensor 11 and the second liquid level sensor 12 may have various implementation forms, for example, a photoelectric liquid level sensor, an electromagnetic liquid level sensor, a resistive liquid level sensor, a capacitive liquid level sensor, or the like is adopted, and the working principle of each liquid level sensor is not described herein again.
As a further optimization of the hydrogen-water separation device, the scheme is that a heating device is attached to the outer wall of the shell 1. Specifically, heating elements such as heating plates and electric heating wires can be adopted by the heating device, and in the cold starting process of the fuel cell, the hydrogen-water separation device can be heated by switching on the heating device, so that the cold starting time is shortened.
In addition, it should be noted that the utility model discloses can also increase and decrease and suitably adjust according to fuel cell's rated power to the quantity of column plate 9, the draft angle of column plate 9, the interval of adjacent column plate 9 and the size of water catch bowl 4 etc. no longer describe herein repeatedly.
The utility model also provides a hydrogen-oxygen fuel cell system, include as above hydrogen-water separator. In a preferred embodiment, the hydrogen-oxygen fuel cell system further comprises a voltage detection device for detecting the output voltage of the stack and a hydrogen concentration sensor for detecting the concentration of hydrogen discharged from the tail of the stack.
Referring to fig. 4, a flow chart of a control strategy of the hydrogen-oxygen fuel cell system for the hydrogen-water separation device will be described.
(1) After the fuel cell starts to work, the hydrogen which is discharged from the hydrogen outlet of the electric pile and carries liquid water and other impurities enters the hydrogen water separation device from the air inlet 2, the hydrogen with pressure moves upwards or forwards, the hydrogen collides with the inner wall of the hydrogen water separation cavity 5 and the tower plate 9, the gas can be forced to change the moving direction due to different densities of the gas and the liquid, the gas can bypass or continue to move upwards along the tower plate 9, the liquid water is intercepted by the tower plate 9 and is remained on the tower plate 9, meanwhile, the liquid water flows downwards along the tower plate 9 due to the action of gravity, in order to enable the liquid water to be quickly and efficiently collected, the upper side surface and the lower side surface of the tower plate 9 are designed to have certain inclination angles, the liquid can quickly flow and be collected along the inclined plane of the tower plate 9, and the liquid water flows into the water collection tank 4 through the communication hole 16 of the partition plate 10 above the water collection tank 4, the hydrogen gas moving upwards is blocked by the tower plates 9 again to be forced to change the moving direction, the liquid water is also blocked by the tower plates 9 along with the movement of the hydrogen gas, so that the steps are repeated, after the gas-liquid mixture passes through each tower plate 9, the gas-liquid mixture is automatically separated into a hydrogen part mainly comprising gas and a liquid water part mainly comprising liquid, the hydrogen part is mainly gathered at the upper end of the hydrogen water separation cavity 5 and can be discharged out of the hydrogen water separation device along the hydrogen discharge pipeline 6, the liquid water is mainly gathered in the water collection tank 4, and the liquid water in the water collection tank 4 can be discharged out of the hydrogen water separation device when the water discharge valve 13 is opened.
The water content of the hydrogen after passing through the 'snake' flow channel formed by each tower plate 9 is obviously reduced compared with the hydrogen at the gas inlet 2, when the hydrogen is further usedAfter passing through the filter 8 in the purge branch 7, it is possible to filter out some solid impurities, hydrogen and liquid water and the contaminants N in the gas2The filter 8 can be used for blowing the gas in the hydrogen-water separation device when the blowing valve 15 is opened, and the gas can pass through the throttle valve and the gas outlet 3 and finally be discharged to the air outlet of the electric pile through the blowing of the blowing valve 15, so that the gas is mainly used for reducing water and N contained in the circulating hydrogen2And impurities are waited, so that the working condition of the galvanic pile is ensured to be more stable.
(2) The hydrogen-oxygen fuel cell system detects the output voltage value of the stack under the known hydrogen inlet amount in real time through the voltage detection device, detects the liquid level value of the water collecting tank 4 in real time through the first liquid level sensor 11 and the second liquid level sensor 12, detects the hydrogen concentration in the tail exhaust gas of the stack in real time through the hydrogen concentration sensor, and can compare and judge the data detected in real time according to the preset value.
(3) The system judges whether the output voltage value of the galvanic pile is smaller than a preset voltage value or not, and when the output voltage value of the galvanic pile is smaller than the preset voltage value, the N contained in the hydrogen separated by the hydrogen water separation device is shown2When the impurities are excessive, purging is required to be performed in time, so that the purging valve 15 is controlled to be opened, the drain valve 13 is controlled to be closed, and then the system continuously judges whether the concentration of the tail-discharged hydrogen is within a preset range; when the output voltage value of the galvanic pile is greater than or equal to the preset voltage value, the system continuously judges whether the liquid level in the water collecting tank 4 is greater than or equal to the first liquid level detected by the first liquid level sensor 11;
(4) when the concentration of the tail-exhausted hydrogen is within a preset range, continuously controlling the purge valve 15 to be opened, and closing the drain valve 13; when the concentration of the tail-exhausted hydrogen is not in the preset range, controlling the purge valve 15 and the drain valve 13 to be closed, and then, continuously judging whether the fuel cell is shut down by the system;
(5) in the step of judging whether the liquid level in the water collecting tank 4 is larger than or equal to the first liquid level detected by the first liquid level sensor 11, if the liquid level in the water collecting tank 4 is smaller than the first liquid level, the system continues to normally detect the output voltage value of the galvanic pile and the liquid level value of the water collecting tank 4; when the liquid level in the water collecting tank 4 is more than or equal to the first liquid level, the liquid level indicates that the liquid water collected in the water collecting tank 4 is too much and needs to be drained in time, at the moment, the system controls the purge valve 15 to be closed and controls the drain valve 13 to be opened, and then whether the liquid level in the water collecting tank 4 is lower than the second liquid level detected by the second liquid level sensor 12 is continuously judged; wherein the second liquid level is lower than the first liquid level;
(6) if the liquid level in the water collecting tank 4 is higher than the second liquid level, the system continuously controls the purge valve 15 to be closed and the drain valve 13 to be opened; if the liquid level in the water collecting tank 4 is less than the second liquid level, the liquid level indicates that less liquid water is reserved in the water collecting tank 4, at the moment, the purge valve 15 and the drain valve 13 are controlled to be closed, and then whether the fuel cell needs to be shut down or not is continuously judged;
(7) in the step of judging whether the fuel cell is shut down, if the fuel cell is shut down, the system controls the drain valve 13 to be opened for X seconds and then closed, so as to ensure that liquid water in the water collecting tank 4 is drained, and then the purge valve 15 is opened for X seconds and then closed, so as to ensure that gas is drained from the hydrogen-water separation device; if the fuel cell is not ready to be shut down, the system continues to normally detect the stack output voltage value and the level value of the water collection tank 4.
The utility model provides an among the hydrogen water separator, hydrogen has had hydrogen water separation before entering into the filter 8 that sweeps branch road 7, and the water content that gets into filter 8's hydrogen is few, only has a small amount of liquid water or does not have liquid water to be detained in choke valve department, so, this scheme is compared in current conventional scheme, needs a small amount of hydrogen again just can sweep hydrogen and liquid water pile air outlet department, so alright in order to improve the utilization ratio of hydrogen, reduce low temperature cold start-up time.
Can find out by the introduction of above technical scheme, the utility model provides a hydrogen water separator collects hydrogen water separation, sweeps, the drainage is in an organic whole, the device simple structure, hydrogen water separation effect is high, hydrogen high-usage can reduce the use of spare part, through the switching of system cooperative control purge valve 15 and drain valve 13, ensures to have stable hydrogen pressure in hydrogen water separation chamber 5, guarantees that fuel cell output is in the allowable fluctuation range, and reduces cold start response time.
The utility model discloses following beneficial effect has:
1) the hydrogen-water separation device provided by the utility model integrates the functions of hydrogen-water separation, purging, water drainage and the like, reduces the number of pipe joints and reduces the risk of hydrogen leakage;
2) the utility model can automatically realize the high-efficiency separation of hydrogen and liquid water by using the blocking effect of the tower plate 9;
3) the utility model integrates and designs the structure of the purging branch circuit 7 and the purging valve 15 in the shell 1, and the purging branch circuit 7 only stores a small amount of liquid water or no liquid water, thereby greatly reducing the hydrogen consumption during purging and improving the hydrogen utilization rate;
4) the utility model can utilize the purge valve 15 to purge impurities such as liquid water in time, and can utilize the drain valve 13 to completely discharge water in the water collecting tank 4 when the machine is stopped, thereby reducing the response time of cold start under the low-temperature working condition;
5) the bottom of the water collecting tank 4 is designed to be an inclined plane, and liquid level sensors are arranged at different height positions in the water collecting tank, so that water can be automatically discharged according to the height of the liquid level;
6) the water collecting tank 4 and the hydrogen-water separation cavity 5 are structurally separated, the system control purge valve 15 and the drain valve 13 can be utilized to work in a cooperative mode, the influence on hydrogen flowing and hydrogen pressure in the hydrogen-water separation cavity 5 during water drainage can be reduced, and the output power of the galvanic pile is guaranteed to be within an allowable fluctuation range.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A hydrogen-water separation device is characterized by comprising a shell, wherein the inner side of the shell comprises a hydrogen-water separation cavity, a water collecting tank positioned below the hydrogen-water separation cavity and a hydrogen discharge pipeline communicated with the upper end of the hydrogen-water separation cavity, the inner side of the shell is also provided with a sweeping branch communicated with one side of the hydrogen discharge pipeline, the side wall of the shell is provided with an air inlet used for communicating the lower part of the hydrogen water separation cavity with the hydrogen outlet of the galvanic pile, the side wall of the shell is provided with an air outlet hole for communicating the purging branch and the air outlet of the electric pile, a purging valve is arranged in the purging branch, a plurality of tower plates are arranged in the hydrogen-water separation cavity, and a plurality of the tower plates are arranged from bottom to top at intervals and are provided with gas flow channels which are communicated with each other, the water catch bowl with set up the baffle and communicate each other through the intercommunicating pore between the hydrogen water separation chamber, the lower extreme of water catch bowl is equipped with the drain valve.
2. The hydrogen water separation device according to claim 1, characterized in that the upper side surface and/or the lower side surface of the tray is arranged inclined with respect to the horizontal plane.
3. The hydrogen water separation device of claim 2, characterized in that the cross section of the trays is wedge-shaped.
4. The hydrogen-water separation device of claim 1, characterized in that a plurality of the trays are distributed in a staggered manner on both side inner walls of the hydrogen-water separation chamber.
5. The hydrogen water separation device according to claim 1, characterized in that the tank bottom surface of the water collection tank is arranged obliquely with respect to the horizontal plane, and the drain valve is located at the lowest position of the tank bottom surface of the water collection tank.
6. The hydrogen water separation device of claim 1, characterized in that the drain valve is a one-way solenoid drain valve.
7. The hydrogen water separation device according to claim 1, characterized in that the partition plate is connected to the hydrogen water separation chamber at its peripheral edge, and that at least one side edge of the partition plate is provided with a plurality of notches, which enclose the communication holes with the inner wall of the hydrogen water separation chamber.
8. The hydrogen water separation device according to claim 1, characterized in that a first liquid level sensor and a second liquid level sensor are arranged in the water collection tank at a predetermined distance from each other in a depth direction.
9. The hydrogen water separation device of claim 1, characterized in that a filter is arranged at the connection of the purging branch and the hydrogen discharge pipeline.
10. The hydrogen water separation device of claim 1, characterized in that the air outlet is provided with a throttle valve.
11. The hydrogen water separation device of claim 1, characterized in that a heating device is affixed to the outer wall of the housing.
12. A hydrogen-oxygen fuel cell system, characterized by comprising the hydrogen-water separation device according to any one of claims 1 to 11.
13. The hydrogen-oxygen fuel cell system according to claim 12, further comprising a voltage detection means for detecting the stack output voltage and a hydrogen concentration sensor for detecting the stack tail gas hydrogen concentration.
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| CN202121444774.5U CN214597750U (en) | 2021-06-28 | 2021-06-28 | Hydrogen-water separation device and hydrogen-oxygen fuel cell system |
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| CN202121444774.5U CN214597750U (en) | 2021-06-28 | 2021-06-28 | Hydrogen-water separation device and hydrogen-oxygen fuel cell system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243058A (en) * | 2021-11-08 | 2022-03-25 | 东风汽车集团股份有限公司 | Fuel cell system, and gas-liquid separation device, control method, and control device for fuel cell system |
| CN114752950A (en) * | 2022-05-16 | 2022-07-15 | 中国标准化研究院 | Wave type power input hydrogen production method and device by electrolyzing water |
| CN116387565A (en) * | 2023-06-06 | 2023-07-04 | 上海重塑能源科技有限公司 | Method and system for low-power operation of fuel cell |
| CN118538965A (en) * | 2024-07-26 | 2024-08-23 | 武汉船用电力推进装置研究所(中国船舶集团有限公司第七一二研究所) | Integrated device for purging hydrogen water diversion tail row of fuel cell |
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2021
- 2021-06-28 CN CN202121444774.5U patent/CN214597750U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243058A (en) * | 2021-11-08 | 2022-03-25 | 东风汽车集团股份有限公司 | Fuel cell system, and gas-liquid separation device, control method, and control device for fuel cell system |
| CN114752950A (en) * | 2022-05-16 | 2022-07-15 | 中国标准化研究院 | Wave type power input hydrogen production method and device by electrolyzing water |
| CN116387565A (en) * | 2023-06-06 | 2023-07-04 | 上海重塑能源科技有限公司 | Method and system for low-power operation of fuel cell |
| CN116387565B (en) * | 2023-06-06 | 2023-08-15 | 上海重塑能源科技有限公司 | Method and system for low-power operation of fuel cell |
| CN118538965A (en) * | 2024-07-26 | 2024-08-23 | 武汉船用电力推进装置研究所(中国船舶集团有限公司第七一二研究所) | Integrated device for purging hydrogen water diversion tail row of fuel cell |
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