CN220433006U - Two-level water supply system for electrolytic tank and general water tank thereof - Google Patents
Two-level water supply system for electrolytic tank and general water tank thereof Download PDFInfo
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- CN220433006U CN220433006U CN202321715985.7U CN202321715985U CN220433006U CN 220433006 U CN220433006 U CN 220433006U CN 202321715985 U CN202321715985 U CN 202321715985U CN 220433006 U CN220433006 U CN 220433006U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 363
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000001502 supplementing effect Effects 0.000 claims abstract description 32
- 239000001257 hydrogen Substances 0.000 claims abstract description 31
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000001301 oxygen Substances 0.000 claims abstract description 29
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 29
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 29
- 239000012528 membrane Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 10
- 239000003513 alkali Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model is suitable for the field of electrolytic water hydrogen production, and provides a two-level water supply system for an electrolytic tank and a general water tank thereof, wherein the two-level water supply system comprises: the general water tank is used for adjusting parameters of the electrolytic tank and is provided with a water supply port, an anode outlet, an oxygen outlet, a water supplementing port, a cathode outlet and a hydrogen outlet; the electrolysis cell is used for electrolyzing water to generate hydrogen and oxygen, and is provided with a water inlet, an anode water outlet and a cathode water outlet; the expansion water tank is used for supplementing water to the general water tank; the water supplementing port of the universal water tank is connected with the expansion water tank and is used for supplementing water for the universal water tank; the water supply port of the general water tank is connected with the water inlet of the electrolytic tank and is used for supplying water for the electrolytic tank; the anode outlet and the cathode outlet of the general water tank are respectively connected with the anode water outlet and the cathode water outlet of the electrolytic tank. The utility model realizes the control of the two-stage outlet air pressure of the electrolytic tank through the universal water tank, and can make the electrolytic tank work at the optimal temperature of 65-85 ℃ by controlling the water pumping rate to the electrolytic tank.
Description
Technical Field
The utility model belongs to the technical field of hydrogen production by water electrolysis, and particularly relates to a two-level water supply system for an electrolytic tank and a general water tank thereof.
Background
The electrolytic water hydrogen production is a process of separating water molecules in water or solution into hydrogen and oxygen by utilizing an electrolytic tank under the condition of inputting direct current, so that the water supply and timely water-gas separation functions provided by a water tank are guarantees for ensuring the stability of the electrolytic process in the working process of the electrolytic tank. As proton exchange membrane electrolytic cells are increasingly widely used in the field of hydrogen storage, the pressure at the hydrogen outlet often must be above 1 Mpa.
The existing electrolytic tank system usually adopts an expansion tank and a water-gas separator to separate water and gas from the electrolytic tank, the gas separated by the water-gas separator enters a storage module, and the water at the separation position is circulated back to the expansion tank. Adopts primary water supply, has simple structure and low price of system accessories.
However, the pressure at the time of primary water supply is difficult to control, and the purity of the obtained hydrogen gas is not high, the expansion tank is large, and the temperature of water supplied to the electrolytic cell is low, resulting in a decrease in electrolytic efficiency and even damage to the electrolytic cell.
Disclosure of Invention
The embodiment of the application aims at providing a second grade water supply system for an electrolytic tank, aims at solving the problems that the pressure during primary water supply is difficult to control, the purity of the obtained hydrogen is not high, an expansion water tank is large, the temperature of water supplied to the electrolytic tank is low, the electrolytic efficiency is reduced, and even the electrolytic tank is damaged.
Embodiments of the present application are thus implemented, a secondary water supply system for an electrolysis cell, the system comprising:
the general water tank is used for adjusting parameters of the electrolytic tank, wherein the parameters at least comprise water supplementing flow, water supplementing temperature and gas pressure, and the general water tank is provided with a water supply port, an anode outlet, an oxygen outlet, a water supplementing port, a cathode outlet and a hydrogen outlet;
the electrolytic tank is used for electrolyzing water to generate hydrogen and oxygen, and is provided with a water inlet, an anode water outlet and a cathode water outlet;
the expansion water tank is used for supplementing water to the universal water tank;
the water supplementing port of the universal water tank is connected with the expansion water tank and is used for supplementing water for the universal water tank;
the water supply port of the general water tank is connected with the water inlet of the electrolytic tank and is used for supplying water for the electrolytic tank;
the anode outlet of the general water tank is connected with the anode water outlet of the electrolytic tank, and the cathode outlet of the general water tank is connected with the cathode water outlet of the electrolytic tank and is used for water and gas to flow from the electrolytic tank to the general water tank.
Another object of an embodiment of the present application is a universal water tank for a secondary water supply of an electrolysis cell, the universal water tank comprising:
the anode box body is provided with a water supply port, an anode outlet, an oxygen outlet, a first pressure sensor, a temperature liquid level sensor and an anode box body flange;
the cathode box body is provided with a water supplementing port, a cathode outlet, a hydrogen outlet, a second pressure sensor, a temperature liquid level sensor and a cathode box body flange;
the anode box flange of the anode box is communicated with the cathode box flange of the cathode box;
and a diaphragm is clamped between the anode box flange and the cathode box flange.
The two-level water supply system for the electrolytic tank provided by the embodiment of the application realizes the control of the air pressure at the two-pole outlet of the electrolytic tank by utilizing the monitoring of the air pressure of oxygen and hydrogen generated by the electrolytic tank by using the universal water tank, solves the difficult problem of pressure control during primary water supply, and effectively relieves the problem of gas purity caused by gas permeation; the general water tank with smaller volume can improve the water supply temperature entering the electrolytic tank, and the electrolytic tank can always work at the optimal temperature of 65-85 ℃ through the water inlet rate of the electrolytic tank; the temperature of the electrolytic tank can be quickly adjusted by adjusting the water flow rate of the expansion water tank to the universal water tank by utilizing a two-level water supply mode of combining the universal water tank with a smaller volume with the expansion water tank with a larger volume. Meanwhile, the expansion water tank is not required to bear pressure, so that the use safety of the expansion water tank can be improved.
Drawings
FIG. 1 is a schematic diagram of a secondary water supply system for an electrolyzer according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a general water tank for a secondary water supply system of an electrolytic cell according to an embodiment of the present application;
fig. 3 is a cross-sectional view of a universal water tank for a secondary water supply for an electrolytic cell according to an embodiment of the present application.
In the accompanying drawings: 1, a general water tank; 2. an electrolytic cell; 3. an expansion tank; 4. a first water pump; 5. a first non-return valve; 6. a second non-return valve; 7. a second water pump; 8. a first electrically powered needle valve; 9. a second electrically powered needle valve; 10. a heat sink; 101. a water supply port; 102. an anode outlet; 103. an oxygen outlet; 104. a water supplementing port; 105. a cathode outlet; 106. a hydrogen outlet; 107. a first pressure sensor; 108. a second pressure sensor; 109. a temperature liquid level sensor; 110. a liquid level sensor; 111. an anode box flange; 112. a cathode box flange; 113. a diaphragm; 114. an anode box; 115 cathode housing; 201. a water inlet of the electrolytic tank; 202. an anode water outlet of the electrolytic tank; 203. and a cathode water outlet of the electrolytic tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
Specific implementations of the present application are described in detail below in connection with specific embodiments.
As shown in fig. 1, a schematic structural diagram of a secondary water supply system for an electrolytic tank according to an embodiment of the present application includes:
the general water tank 1 is used for adjusting parameters of the electrolytic tank 2, wherein the parameters comprise at least water supplementing flow, water supplementing temperature and gas pressure, and the general water tank 1 is provided with a water supply port 101, an anode outlet 102, an oxygen outlet 103, a water supplementing port 104, a cathode outlet 105 and a hydrogen outlet 106;
the electrolytic tank 2 is used for electrolyzing water to generate hydrogen and oxygen, and is provided with a water inlet 201, an anode water outlet 202 and a cathode water outlet 203;
an expansion tank 3 for replenishing water to the general-purpose water tank 1;
wherein, the water supplementing port 104 of the general water tank 1 is connected with the expansion water tank 1 and is used for supplementing water for the general water tank 1;
the water supply port 101 of the general water tank 1 is connected with the water inlet 201 of the electrolytic tank and is used for supplying water to the electrolytic tank;
the anode outlet 102 of the utility water tank 1 is connected to the electrolysis cell anode outlet 202, and the cathode outlet 105 of the utility water tank is connected to the electrolysis cell cathode outlet 203 for water and gas to flow from the electrolysis cell 2 to the utility water tank 1.
In the embodiment of the application, the monitoring of the air pressure of oxygen and hydrogen generated by the electrolytic tank 2 by the universal water tank 1 is utilized to realize the control of the air pressure at the two outlets of the electrolytic tank 2, thereby solving the difficult problem of pressure control during primary water supply and effectively relieving the problem of gas purity caused by gas permeation; the general water tank 1 with smaller volume can improve the water supply temperature entering the electrolytic tank 2, and can ensure that the electrolytic tank 2 always works at the optimal temperature of 65-85 ℃ through the water inlet rate of the electrolytic tank 2; by utilizing the two-level water supply mode of combining the general water tank 1 with a smaller volume and the expansion water tank 3 with a larger volume, the temperature of the supply electrolytic tank 2 can be quickly adjusted by adjusting the water flow rate of the expansion water tank 3 to the general water tank 1. At the same time, the expansion tank 3 no longer needs to bear pressure, and the use safety of the expansion tank can be improved.
In an example of the application, the general water tank 1 is structural equipment newly added in the traditional expansion water tank 3 and the electrolytic tank 2, has water supply and water-gas separation functions, provides water supply with proper temperature and controllable flow rate for the electrolytic tank 2, performs water-gas separation on wet hydrogen and oxygen generated by the electrolytic tank 2, optimizes a primary water supply mode of the electrolytic tank 2 for directly supplying water from the expansion water tank 3 to a secondary water supply mode of the general water tank 1, can realize control of two-stage outlet air pressure of the electrolytic tank 2, water supplementing flow and liquid temperature by arranging a sensor in the general water tank 1, monitors the air pressure in the general water tank 1 in real time, and rapidly adjusts the temperature of the electrolytic tank 2 by adjusting the water flowing rate of the general water tank 1 to the electrolytic tank 2; under the condition of inputting direct current, the electrolytic tank 2 electrolyzes and separates water molecules in water or solution into hydrogen and oxygen, in the process of working of the electrolytic tank 2, the water supply and timely water-gas separation function provided by the general water tank 1 are guaranteed to ensure the stability of the electrolytic process, the optimal working temperature of the electrolytic tank 2 is between 65 ℃ and 85 ℃, the expansion water tank 3 is generally made of a material capable of generating certain deformation, and is generally round or rectangular, and because the water temperature of a secondary water supply system can change, the expansion water tank 3 no longer needs to bear stress caused by larger circulating water temperature difference by utilizing a secondary water supply mode of combining the general water tank 1 with smaller volume with the expansion water tank 3 with larger volume. All devices in the system are connected through pipelines, substances can flow between the devices, the expansion water tank 3 supplies water to the general water tank 1, the general water tank 1 supplies water to the electrolytic tank 2, and gas with water generated by the electrolytic tank 2 flows to the electrolytic tank 2.
As shown in fig. 1, as a preferred embodiment of the present application, a first check valve 5 and a first water pump 4 are further disposed between the water replenishing port 104 of the general-purpose water tank 1 and the expansion water tank 3, for controlling the flow rate of water replenishing the general-purpose water tank.
In one embodiment of the present application, the water compensating port 104 of the universal water tank 1 is connected in series with the first check valve 5, the first water pump 4 and the expansion water tank 3 through a pipeline, the check valve is used for allowing the medium to flow in one direction and preventing the medium from flowing in the opposite direction, and the check valve can be a lifting check valve, a swing check valve and a butterfly check valve, which are not limited in particular, the water pump is used for increasing the energy of the liquid and is used for conveying the liquid and controlling the flow rate of the liquid and the water quantity entering the universal water tank 1, and the type of the pump is not limited. When the liquid level in the general purpose water tank 1 is higher than 75% of the maximum allowable liquid level, the amount of water entering the general purpose water tank 1 from the expansion water tank 3 is reduced, and when the liquid level in the general purpose water tank 1 is lower than the minimum allowable liquid level, the amount of water entering the general purpose water tank 1 from the expansion water tank 3 is increased. The liquid level in the universal water tank 1 can be effectively maintained at a proper height.
As shown in fig. 1, as another preferred embodiment of the present application, a second check valve 6 and a second water pump 7 are further disposed between the water supply port 101 of the general water tank 1 and the water inlet 201 of the electrolytic tank, for controlling the flow rate of water fed into the electrolytic tank 2.
In one embodiment of the application, the water supply port 101 of the universal water tank 1 is connected with the second check valve 6, the second water pump 7 and the water inlet 201 of the electrolytic tank by utilizing pipelines to supply water or alkali liquor to the electrolytic tank 2, the second check valve 6 can be a check valve with the same type or different type from the first check valve 5, the same second water pump 7 can be a water pump with the same type or different type from the first water pump 4, and the water quantity entering the electrolytic tank 2 can be adjusted by the second water pump 7.
As shown in fig. 1, as another preferred embodiment of the present application, a radiator 10 is further disposed between the anode outlet 102 of the general water tank 1 and the anode outlet 202 of the electrolytic cell, for controlling the temperature of water and gas input into the general water tank 1.
In one embodiment of the present application, a radiator 10 is further disposed between the anode outlet 102 of the general water tank 1 and the anode outlet 202 of the electrolytic tank, and oxygen generated by the anode of the electrolytic tank 2 and water or alkali liquor which is not completely reacted enter the general water tank 1 from the anode outlet 202 of the electrolytic tank and the anode outlet 102 of the general water tank through pipelines. Further, the water or alkali liquor which is not completely reacted falls back into the general water tank 1, oxygen is discharged through the oxygen outlet 103 of the general water tank 1, the radiator 10 changes the radiating effect according to the water temperature in the general water tank 1, and the radiator 10 can be selected as a combination of a radiating pipe and a radiating fan. The temperature of the liquid in the general water tank 1 is maintained, the temperature of the liquid level entering the electrolytic tank 2 is further controlled, and the temperature of the liquid in the electrolytic tank 2 is maintained at 65-85 ℃.
As shown in fig. 1, as another preferred embodiment of the present application, the oxygen outlet 103 of the universal water tank 1 is connected with a first electric needle valve 8 for controlling the pressure of oxygen in the universal water tank 1;
the hydrogen outlet 106 of the general water tank 1 is connected with a second electric needle valve 9 for controlling the pressure of the hydrogen in the general water tank 1.
In one embodiment of the present application, by controlling the opening of the first and second electrically powered needle valves 8, 9, the gas pressure within the utility tank 1 can be adjusted, ensuring that the purity of the hydrogen gas is maintained at a higher outlet pressure.
As another preferred embodiment of the present application, the first stage water supply mode of the two-stage water supply system is that the expansion tank 3 supplies water to the general water tank 1 through a first water pump 4 and a first check valve 5.
In one embodiment of the present application, the primary water supply makes the expansion tank 3 no longer required to withstand the stress caused by the larger temperature difference of the circulating water, and the use safety thereof can be improved.
As another preferred embodiment of the present application, the second-stage water supply mode of the two-stage water supply system is that the general water tank 1 supplies water to the electrolytic tank 2 through the second check valve 6 and the second water pump 7.
In one embodiment of the application, the two-stage water supply realizes the control of the air pressure at the two outlets of the electrolytic tank 2, solves the pressure control problem in the prior one-stage water supply, and effectively relieves the problem of gas purity caused by gas permeation.
As shown in fig. 2, the embodiment of the present application further provides a general water tank for a secondary water supply system of an electrolytic cell, including:
an anode box 114, wherein the anode box 114 is provided with a water supply port 101, an anode outlet 102, an oxygen outlet 103, a first pressure sensor 107, a temperature liquid level sensor 109 and an anode box flange 111;
a cathode box 115, wherein the cathode box 115 is provided with a water supplementing port 104, a cathode outlet 105, a hydrogen outlet 106, a second pressure sensor 108, a liquid level sensor 110 and a cathode box flange 112;
the anode case flange 111 of the anode case 114 is communicated with the cathode case flange 112 of the cathode case 115;
a diaphragm 113 is interposed between the anode case flange 111 and the cathode case flange 112.
In the embodiment of the application, the air pressure sensor in the universal water tank 1 is utilized to realize the control of the air pressure at the two outlets of the electrolytic tank 2, and the problem of gas purity caused by gas permeation is effectively relieved; the general water tank 1 with smaller volume can improve the water supply temperature entering the electrolytic tank 2, and can ensure that the electrolytic tank 2 always works at the optimal temperature of 65-85 ℃ by controlling the water pumping rate.
In one embodiment of the present application, the anode tank 114 and the cathode tank 115 are cylindrical tanks with the same height and the same inner diameter, the anode outlet 102 is arranged at the middle position of the anode tank 114, the water supply port 101 is arranged at the bottom position of the anode tank 114, the oxygen outlet 103 is arranged at the top position of the anode tank 114, the first pressure sensor 107 and the temperature liquid level sensor 109, the anode tank flange 112 is arranged at one side of the water supply port 101, the cathode tank 115 is similarly provided with the cathode outlet 105, the water supplementing port 104, the hydrogen outlet 106, the second pressure sensor 108, the liquid level sensor 110 and the cathode tank flange 112 at the same position corresponding to the anode tank 114, and the positions of the anode outlet 102 and the cathode outlet 105 are at least half of the tank.
In one embodiment of the present application, the installation of the entire universal water tank 1 is achieved by butt-sealing the anode tank flange 111 and the cathode tank flange 112, with a membrane 113 sandwiched between the two flange interfaces, which is a proton exchange membrane if the electrolyzer 2 is a PEM electrolyzer; if the electrolytic cell 2 is an alkaline water electrolytic cell, the diaphragm 113 is a polyphenylene sulfide film (PPS). Further, the membrane 113 serves to isolate bubbles and water-soluble gas, and only water or alkali solution is allowed to pass through the middle. The purity of the hydrogen can be maintained at 99.98% even at an operating pressure of 3MPa by the action of the membrane
Oxygen generated by the anode of the electrolytic tank 2 and water or alkali liquor which is not completely reacted enter the anode box 114 from the anode water outlet 202 of the electrolytic tank and the anode outlet 102 of the general water tank through pipelines. Further, the water or alkali solution which is not completely reacted falls back into the anode box 114, and oxygen is discharged through the oxygen outlet 103.
Oxygen generated by the cathode of the electrolytic tank 2 and water or unreacted complete alkali liquor permeated from the anode through the proton exchange membrane enter the cathode box 115 from the cathode water outlet 203 of the electrolytic tank and the cathode outlet 105 of the general water tank through pipelines. Further, water or unreacted alkali solution permeated from the anode through the proton exchange membrane is introduced into the cathode tank 115, and hydrogen is discharged through the hydrogen outlet 106.
The first pressure sensor 107 measures the air pressure in the anode casing 114.
The second pressure sensor 108 measures the air pressure in the cathode housing 115.
The temperature and level sensor 109 measures the temperature and level of the liquid in the anode casing 114.
The level sensor 110 measures the level of liquid in the cathode housing 115.
By controlling the opening degrees of the first and second electrically-operated needle valves 8 and 9, the gas pressures in the anode and cathode tanks 114 and 115 can be adjusted. And the water fed into the general water tank 1 from the expansion water tank 3 enters the anode tank 114 from the cathode tank 115 through the diaphragm 113 in the communicating vessel, the air pressure in the anode tank 114 is controlled to be slightly smaller than the air pressure in the cathode tank 115, and the control range is 20-150 kPa.
Preferably, the air pressure within the anode casing 114 is at 1MPa, with a pressure differential of 20kPa.
Preferably, the air pressure in the anode casing 114 is at 2MPa, and the pressure difference is 50kPa;
preferably, the air pressure in the anode casing 114 is at 3MPa, and the pressure difference is 100kPa.
Preferably, under the air pressure of 0-3 MPa, if the temperature in the anode box 114 exceeds 85 degrees or the temperature rising rate is more than 5 ℃/min, the pressure difference is adjusted to 150kPa, the water supplementing rate entering the cathode box 115 is correspondingly increased, so that the liquid entering the anode box 114 is increased, and the cooling effect is achieved.
The rate of water replenishment (v) is regulated based on the temperature in anode casing 114, liquid level D1, and liquid level D2 in cathode casing 115. The specific adjusting method is as follows:
under the condition of normal fluid infusion, D min ≤D1≤0.5D max And D is min ≤D2≤0.25D max Wherein D is max For maximum allowable liquid level D min Is the minimum allowable liquid level. If the liquid level is higher than D max The liquid overflows out of the tank body; if the liquid level is lower than D min The anode tank cannot be replenished with water through the cathode tank.
Controlling the sum of the liquid levels in the anode tank 114 and the cathode tank 115 of the universal water tank 1 to be equal to 0.75D max The expression of the water replenishment rate is as follows:
wherein v is the water supplementing rate, mL/s; r is the radius of the anode casing 114 and cathode casing 115, cm; x is the sum of the liquid level heights in the anode tank 114 and the cathode tank 115, cm; d (D) max The maximum allowable liquid level height is a constant, cm; t is time, s.
The temperature control corresponds to the following 4 states:
state 1: the radiator 10 rotates according to the water Wen Biansu in the anode tank 114 to maintain the water temperature at 60-65 ℃, and at this time, the water supply rate of the second water pump 7 is a fixed value.
State 2: the water temperature is 65-75 ℃, so that the heat dissipation row 10 rotates to the highest speed, and meanwhile, the water supply rate of the second water pump 7 is twice of the original fixed value.
State 3: the water temperature is 75-85 ℃, the heat dissipation row 10 is quickly adjusted to the highest, the water supply rate of the second water pump 7 is twice of the original fixed value, meanwhile, the water supplementing amount of the first water pump 4 is increased to 2 times of the normal water supplementing rate, and cold water passes through the diaphragm 113 to enter the anode box 114 until the liquid level in the anode box 114 reaches 0.75D max 。
State 4: and if the water temperature is higher than 85 ℃, the whole system is turned off in an emergency.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A secondary water supply system for an electrolysis cell, the system comprising:
the general water tank is used for adjusting parameters of the electrolytic tank, wherein the parameters at least comprise water supplementing flow, water supplementing temperature and gas pressure, and the general water tank is provided with a water supply port, an anode outlet, an oxygen outlet, a water supplementing port, a cathode outlet and a hydrogen outlet;
the electrolytic tank is used for electrolyzing water to generate hydrogen and oxygen, and is provided with a water inlet, an anode water outlet and a cathode water outlet;
the expansion water tank is used for supplementing water to the universal water tank;
the water supplementing port of the universal water tank is connected with the expansion water tank and is used for supplementing water for the universal water tank;
the water supply port of the general water tank is connected with the water inlet of the electrolytic tank and is used for supplying water for the electrolytic tank;
the anode outlet of the general water tank is connected with the anode water outlet of the electrolytic tank, and the cathode outlet of the general water tank is connected with the cathode water outlet of the electrolytic tank and is used for water and gas to flow from the electrolytic tank to the general water tank.
2. A two-stage water supply system for an electrolytic tank according to claim 1, wherein a first check valve and a first water pump are further provided between the water replenishment port of the general-purpose water tank and the expansion water tank for controlling the flow rate of replenishing water to the general-purpose water tank.
3. The secondary water supply system for an electrolytic tank of claim 1, wherein a second non-return valve and a second water pump are further provided between the water supply port of the general water tank and the water inlet of the electrolytic tank for controlling the flow rate of water into the electrolytic tank.
4. A secondary water supply for an electrolytic cell as claimed in claim 1 wherein a radiator is also provided between the anode outlet of the utility tank and the anode outlet of the electrolytic cell for controlling the temperature of the water and gas input to the utility tank.
5. The secondary water supply system for an electrolytic cell of claim 1 wherein the oxygen outlet of the universal water tank is connected to a first electrically actuated needle valve for controlling the pressure of oxygen within the universal water tank;
the hydrogen outlet of the general water tank is connected with a second electric needle valve for controlling the pressure of the hydrogen in the general water tank.
6. A secondary water supply system for an electrolytic cell according to claim 1 wherein the primary water supply of the secondary water supply system is such that the expansion tank supplies water to the utility tank via a first water pump, a first check valve.
7. A secondary water supply system for an electrolytic cell according to claim 1 wherein the secondary water supply means of the secondary water supply system is such that the utility tank supplies water to the electrolytic cell via a second non-return valve, a second water pump.
8. A universal water tank for a two-level water supply system for an electrolysis cell, the universal water tank comprising:
the anode box body is provided with a water supply port, an anode outlet, an oxygen outlet, a first pressure sensor, a temperature liquid level sensor and an anode box body flange;
the cathode box body is provided with a water supplementing port, a cathode outlet, a hydrogen outlet, a second pressure sensor, a liquid level sensor and a cathode box body flange;
the anode box flange of the anode box is communicated with the cathode box flange of the cathode box;
and a diaphragm is clamped between the anode box flange and the cathode box flange.
9. A utility water tank for a two-level water supply of an electrolysis cell according to claim 8, wherein the membrane serves to isolate air bubbles from water-soluble gases.
10. A utility water tank for a two-level water supply of an electrolytic cell as claimed in claim 8, wherein the sum of the liquid levels in the anode and cathode tanks of the utility water tank is equal to 0.75D max The expression of the water replenishment rate is as follows,
wherein v is the water supplementing rate, mL/s; r is the radius of the anode box body and the cathode box body, cm; x is the sum of the liquid level heights in the anode box body and the cathode box body, cm; d (D) max The maximum allowable liquid level height is a constant, cm; t is time, s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321715985.7U CN220433006U (en) | 2023-07-03 | 2023-07-03 | Two-level water supply system for electrolytic tank and general water tank thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321715985.7U CN220433006U (en) | 2023-07-03 | 2023-07-03 | Two-level water supply system for electrolytic tank and general water tank thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220433006U true CN220433006U (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321715985.7U Active CN220433006U (en) | 2023-07-03 | 2023-07-03 | Two-level water supply system for electrolytic tank and general water tank thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220433006U (en) |
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2023
- 2023-07-03 CN CN202321715985.7U patent/CN220433006U/en active Active
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