CN111118525B - Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof - Google Patents
Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof Download PDFInfo
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- CN111118525B CN111118525B CN202010094603.8A CN202010094603A CN111118525B CN 111118525 B CN111118525 B CN 111118525B CN 202010094603 A CN202010094603 A CN 202010094603A CN 111118525 B CN111118525 B CN 111118525B
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- circulating pump
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to an electrolytic cell suitable for pressurizing a circulation pump housing, comprising at least one working chamber; the gas-liquid separator is communicated with the hydrogen outlet or the oxygen outlet of the electrolytic tank; and a circulating pump arranged in the working cavity. A method of operating an electrolytic cell comprising the steps of: step S1, arranging a circulating pump and a gas-liquid separator in the same working cavity; s2, separating gas output from the electrolytic tank by a gas-liquid separator, wherein the separated gas is communicated with the working cavity so as to form positive pressure in the working cavity; and S2, conveying electrolyte to the electrolytic tank by the circulating pump under the positive pressure environment. The circulating pump is operated in the working cavity with positive pressure, so that the pressure difference between the inside and the outside of the circulating pump is reduced, the leakage probability of the circulating pump is reduced, and the circulating pump is operated in the positive pressure environment, so that the circulating pump with low bearing pressure of the pump shell can be selected.
Description
Technical Field
The invention relates to an electrolytic tank suitable for pressurizing a circulating pump shell and a working method thereof.
Background
The electrolytic tank comprises a liquid inlet, a hydrogen outlet and an oxygen outlet, electrolyte is input into each electrolytic chamber of the electrolytic tank from the liquid inlet for electrolytic reaction, separated hydrogen and part of electrolyte are output from the hydrogen outlet, separated oxygen and part of electrolyte are output from the oxygen outlet, the hydrogen and the oxygen respectively enter into respective gas-liquid separators for gas-liquid separation, the hydrogen and the oxygen are collected, and the separated electrolyte flows back into the liquid storage cavity.
The problems of the current electrolytic cell are: the circulating pump for inputting electrolyte into the electrolytic tank is directly placed in the external air, when the circulating pump works, the internal pressure received by the pump shell is far greater than the internal atmospheric pressure, in order to prevent the pump shell from leaking, the pump shell needs to select the circulating pump with hydrogen production pressure and total pump lift pressure, for example, 20-30 kg, so that the purchased circulating pump has higher cost, and even if the circulating pump with the weight is selected, the problem of leakage still exists easily.
Secondly, the structure of the system for preparing gas in the conventional electrolytic tank is complicated, two gas-liquid separators, circulating pumps and the like are required to be arranged outside the electrolytic tank, and the gas-liquid separators and the circulating pumps are respectively connected with a vent pipe and a liquid-passing pipe, so that the external structure of the whole electrolytic tank system is complicated.
Disclosure of Invention
The invention aims to solve the technical problems that: the utility model provides an electrolytic cell suitable for pressurizing a circulating pump shell, which solves the problem that the circulating pump is easy to leak because the pressure difference between the inside and the outside of the circulating pump is larger because the circulating pump is arranged in the outside air when the circulating pump of the electrolytic cell works in the past.
The technical scheme adopted for solving the technical problems is as follows: an electrolytic cell adapted to pressurize a circulating pump housing comprising
At least one working chamber;
the gas-liquid separator is arranged in the working cavity, is communicated with the hydrogen outlet or the oxygen outlet of the electrolytic cell, and is suitable for communicating the separated hydrogen or oxygen into the working cavity so as to form positive pressure in the working cavity;
and the circulating pump is arranged in the working cavity, is communicated with the liquid inlet of the electrolytic tank and is suitable for conveying electrolyte to the electrolytic tank.
Further, the number of the working cavities is two, namely a first working cavity and a second working cavity;
the gas-liquid separator in the first working cavity is communicated with the hydrogen outlet of the electrolytic tank; is suitable for inputting separated hydrogen into the first working cavity so as to form positive pressure in the first working cavity;
the gas-liquid separator in the second working cavity is communicated with the oxygen outlet of the electrolytic tank and is suitable for inputting the separated oxygen into the second working cavity so as to form positive pressure in the second working cavity.
Further, the electrolytic cell also comprises a liquid storage cavity which is suitable for storing electrolyte;
the liquid inlet of the circulating pump is communicated with the liquid storage cavity;
the liquid storage cavity is connected with a liquid supplementing pump and is suitable for supplementing water into the liquid storage cavity.
Further, a liquid outlet of the gas-liquid separator is communicated with the liquid storage cavity and is suitable for refluxing the separated electrolyte into the liquid storage cavity.
Further, the electrolytic tank comprises working chambers, and each working chamber and each liquid storage chamber are formed by separating the working chambers.
Further, a liquid level sensor is arranged in the liquid storage cavity, and the liquid supplementing pump is suitable for supplementing water to the liquid storage cavity according to signals of the liquid level sensor.
Further, the electrolytic chamber is provided at an end side of the electrolytic tank.
Further, the electrolytic cell is applied to an electrode reaction device.
In yet another aspect, a method of operating an electrolytic cell includes the steps of:
step S1, arranging a circulating pump and a gas-liquid separator in the same working cavity;
s2, separating gas output from the electrolytic tank by a gas-liquid separator, and inputting the separated gas into a working cavity so as to form positive pressure in the working cavity;
and S2, conveying electrolyte to the electrolytic tank by the circulating pump under the positive pressure environment.
The beneficial effects of the invention are as follows:
the invention provides an electrolytic tank, which is characterized in that a circulating pump is operated in a working cavity at positive pressure, so that the pressure difference between the inside and the outside of the circulating pump is reduced, the leakage probability of the circulating pump is reduced, the circulating pump is operated in the positive pressure environment, the circulating pump with low bearing pressure of a pump shell can be selected, the pump shell of 20-30 kg in the past is changed into the pump shell of 3-5 kg in the past, and the cost of the circulating pump is greatly reduced.
Secondly, the structure of the whole electrolytic tank gas making system is optimized; the gas-liquid separator and the circulating pump are arranged in the same working cavity, the working chamber is arranged at the end side of the electrolytic tank, the whole liquid inlet and outlet pipelines are shortened, and the structure of the electrolytic tank system is optimized.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of an embodiment of an electrolytic cell;
FIG. 2 is a schematic view of a second embodiment of an electrolytic cell;
FIG. 3 is a schematic view of two electrolytic cells with a single working chamber;
wherein, 1, electrolysis trough, 2, working chamber, 3, gas-liquid separator, 4, circulating pump, 5, stock solution chamber, 6, make-up pump.
Detailed Description
The invention will now be further described with reference to specific examples. These drawings are simplified schematic views illustrating the basic structure of the present invention by way of illustration only, and thus show only the constitution related to the present invention.
Example 1
As shown in fig. 1, an electrolytic cell 1 adapted to pressurize a casing of a circulation pump 4 comprises at least one working chamber 2;
a gas-liquid separator 3, the gas-liquid separator 3 is communicated with a hydrogen outlet or an oxygen outlet of the electrolytic tank 1, and is suitable for communicating the separated hydrogen or oxygen into the working cavity 2 so as to form positive pressure in the working cavity 2 (positive pressure is shown in "+" in the figure);
the circulating pump 4 is communicated with the liquid inlet of the electrolytic tank 1 and is suitable for conveying electrolyte to the electrolytic tank 1;
the circulating pump 4 is arranged in the working chamber 2, so that the casing of the circulating pump 4 bears the gas pressure in the working chamber 2.
Preferably, the gas-liquid separator 3 is disposed in the working chamber 2, so as to optimize the structure of the whole system, and the gas-liquid separator 3 disposed in the working chamber 2 only needs to be selected from a smaller model.
Preferably, the cell 1 further comprises a reservoir 5 adapted to store an electrolyte; the liquid inlet of the circulating pump 4 is communicated with the liquid storage cavity 5; the liquid storage cavity 5 is connected with a liquid supplementing pump 6 and is suitable for supplementing water into the liquid storage cavity 5. The electrolyte is replenished by the water replenishing pump according to the liquid level in the liquid storage cavity 5, so that the liquid level of the liquid storage cavity 5 is controlled at a fixed position.
Preferably, the liquid outlet of the gas-liquid separator 3 is communicated with the liquid storage cavity 5, and is suitable for refluxing the separated electrolyte into the liquid storage cavity 5, and the separated electrolyte is fully utilized at the moment.
Preferably, for further optimization of the structure, the electrolyzer 1 comprises working chambers, each working chamber 2 and reservoir 5 being formed by a separation of the working chambers. Therefore, the whole working chamber can be provided with the circulating pump 4 and the gas-liquid separator 3 which are used for storing electrolyte, compared with the traditional complicated pipeline layout, the structure is more simplified, and only one working chamber is provided from the outside.
Preferably, a liquid level sensor is arranged in the liquid storage cavity 5, and the liquid supplementing pump 6 is suitable for supplementing water into the liquid storage cavity 5 according to signals of the liquid level sensor. The liquid level sensor is selected and the liquid is replenished in a manner which is a conventional technical means in the art, and is not described herein.
Preferably, the electrolytic chamber is arranged at the end side of the electrolytic tank 1, and the design can reduce the use of a liquid passing pipe and a vent pipe, so that the structure is more simplified.
In this embodiment, the gas-liquid separator 3 conveys the separated hydrogen or oxygen into the working chamber 2, so that the working chamber 2 forms a positive pressure, and the positive pressure is applied to the casing of the circulating pump 4, so that the internal and external pressure differences of the circulating pump 4 are reduced, the risk of pump casing leakage is reduced, and meanwhile, the circulating pump 4 with a lighter pump casing can be selected, so that the cost is reduced.
During operation, the circulating pump 4 reacts in the electrolyte input electrolytic tank 1, output hydrogen (entraining part of electrolyte) enters the gas-liquid separator 3 for separation, the separated hydrogen fills the working cavity 2, so that positive pressure is formed in the working cavity 2, the internal and external pressure difference is reduced after the shell of the circulating pump 4 in the working cavity 2 bears the positive pressure, the electrolyte separated by the gas-liquid separator 3 flows back to the liquid storage cavity 5 for recycling, the hydrogen in the working cavity 2 is output to the hydrogen storage tank outwards through the air outlet pipe on the working cavity 2, the above separation flow of the hydrogen is the same as the flow of the hydrogen, only the oxygen needs to finish the operation process in the other working cavity 2, and the hydrogen and the oxygen cannot be separated in the same working cavity 2.
Example two
This embodiment is based on the first embodiment, and is further improved on the basis of the first embodiment.
As shown in fig. 2, in an electrolytic cell 1, two working chambers 2 are provided, namely a first working chamber and a second working chamber; the gas-liquid separator 3 in the first working cavity is communicated with the hydrogen outlet of the electrolytic tank 1; is adapted to feed separated hydrogen gas into the first working chamber so that a positive pressure is established in the first working chamber (in the figures "+" indicates that the chamber is positive);
the gas-liquid separator 3 in the second working chamber is communicated with the oxygen outlet of the electrolytic tank 1 and is suitable for inputting the separated oxygen into the second working chamber so as to form positive pressure in the second working chamber (positive pressure is shown in the figure by "+").
In the actual operation process, only one of the circulating pump 4 in the first working cavity and the circulating pump 4 in the second working cavity is required to work, and the other can be used as a standby.
In this embodiment, the first working chamber, the second working chamber and the liquid storage chamber 5 are located in the same working chamber, and the working chamber is arranged on the end wall of the electrolytic tank 1.
One working chamber may be configured for one electrolytic tank 1, or one working chamber may be configured for two electrolytic tanks 1, as shown in fig. 3, the working chamber is disposed between the two electrolytic tanks 1, two circulation pumps 4 in the working chamber respectively convey electrolyte to the two electrolytic tanks 1, hydrogen output by the two electrolytic tanks 1 all enter the gas-liquid separator 3 in the first working chamber, and oxygen output by the two electrolytic tanks 1 all enter the gas-liquid separator 3 in the second working chamber.
Example III
A method of operating an electrolytic cell comprising the steps of:
step S1, arranging a circulating pump 4 and a gas-liquid separator 3 in the same working cavity 2;
step S2, a gas-liquid separator 3 separates the gas output from the electrolytic tank 1, and the separated gas is input into the working chamber 2 so that positive pressure is formed in the working chamber 2 (in the figure, "+" indicates that the chamber is positive pressure);
in step S2, the circulation pump 4 supplies the electrolyte to the electrolytic cell 1 in the positive pressure environment.
The circulating pump 4 works in the working cavity 2 at positive pressure, so that the pressure difference between the inside and the outside of the circulating pump 4 is reduced, the leakage probability of the circulating pump 4 is reduced, the circulating pump 4 is operated in the positive pressure environment, the circulating pump 4 with low bearing pressure of a pump shell can be selected, the pump shell of 20-30 kg in the past is changed into the pump shell of 3-5 kg in the past, and the cost of the circulating pump 4 is greatly reduced.
Example IV
The electrolytic cell according to the first embodiment is applicable to an electrode reaction device.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. An electrolyzer unit adapted to pressurize a circulating pump housing, comprising
An electrolytic cell, at least one working chamber;
the gas-liquid separator is arranged in the working cavity, is communicated with the hydrogen outlet or the oxygen outlet of the electrolytic cell, and is suitable for communicating the separated hydrogen or oxygen into the working cavity so as to form positive pressure in the working cavity;
the circulating pump is arranged in the working cavity, is communicated with the liquid inlet of the electrolytic tank and is suitable for conveying electrolyte to the electrolytic tank;
the electrolytic tank device also comprises a liquid storage cavity which is suitable for storing electrolyte and is arranged outside the working cavity;
the liquid inlet of the circulating pump is communicated with the liquid storage cavity;
the liquid storage cavity is connected with a liquid supplementing pump and is suitable for supplementing water into the liquid storage cavity;
the electrolytic tank device comprises working chambers, and each working chamber and each liquid storage chamber are formed by separating the working chambers;
the hydrogen in the working cavity is output to the hydrogen storage tank outwards through the air outlet pipe on the working cavity, or the oxygen in the working cavity is output to the oxygen storage tank outwards through the air outlet pipe on the working cavity.
2. An electrolyzer unit adapted to pressurize a casing of a circulation pump according to claim 1, wherein the number of working chambers is two, a first working chamber and a second working chamber, respectively;
the gas-liquid separator in the first working cavity is communicated with the hydrogen outlet of the electrolytic tank; is suitable for inputting separated hydrogen into the first working cavity so as to form positive pressure in the first working cavity;
the gas-liquid separator in the second working cavity is communicated with the oxygen outlet of the electrolytic tank and is suitable for inputting the separated oxygen into the second working cavity so as to form positive pressure in the second working cavity.
3. The electrolyzer unit of claim 1 wherein the outlet of the gas-liquid separator is in communication with the reservoir chamber and adapted to return separated electrolyte to the reservoir chamber.
4. The electrolyzer unit adapted to pressurize a circulating pump housing of claim 1 wherein a liquid level sensor is disposed in the liquid storage chamber and the liquid replenishment pump is adapted to replenish water in the liquid storage chamber based on signals from the liquid level sensor.
5. An electrolyser apparatus as claimed in claim 1, wherein said working chamber is provided at the end side of the electrolyser.
6. The electrolyzer unit adapted to pressurize a circulating pump housing according to claim 1, characterized in that the number of electrolyzer is two;
the working chamber is arranged between the two electrolytic tanks, and the two circulating pumps in the working chamber are respectively communicated with the liquid inlets of the two electrolytic tanks;
the hydrogen outlets of the two electrolytic tanks are communicated with the gas inlet of the gas-liquid separator in the first working cavity;
the oxygen outlets of the two electrolytic tanks are communicated with the air inlet of the gas-liquid separator in the second working cavity.
7. An electrolyzer unit adapted to pressurize a circulating pump housing in accordance with claim 1,
the electrolytic cell device is applied to an electrode reaction device.
8. A method of operation of an electrolyzer unit adapted to pressurize a casing of a circulation pump in accordance with claim 1, comprising the steps of:
step S1, arranging a circulating pump and a gas-liquid separator in the same working cavity;
s2, separating gas output from the electrolytic tank by a gas-liquid separator, and inputting the separated gas into a working cavity so as to form positive pressure in the working cavity;
and step S3, the circulating pump conveys electrolyte to the electrolytic tank under the positive pressure environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010094603.8A CN111118525B (en) | 2020-02-16 | 2020-02-16 | Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010094603.8A CN111118525B (en) | 2020-02-16 | 2020-02-16 | Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof |
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| CN111118525A CN111118525A (en) | 2020-05-08 |
| CN111118525B true CN111118525B (en) | 2023-08-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114000173A (en) * | 2021-11-29 | 2022-02-01 | 广东氢时代健康产业科技有限公司 | Large-flow oxyhydrogen machine |
| CN116024609A (en) * | 2022-12-26 | 2023-04-28 | 北京科技大学 | Electrolytic cell starting system, method, device and storage medium |
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| CN2086335U (en) * | 1991-01-31 | 1991-10-09 | 临清市石油机械厂 | Differential pressure seal device of centrifugal pump |
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| CN203035518U (en) * | 2013-02-01 | 2013-07-03 | 天津市津能双鹤热力设备有限公司 | Low-pressure protection device of circulating pump |
| CN105697418A (en) * | 2016-01-25 | 2016-06-22 | 崔华 | High-pressure-resistant circulating pump for reverse osmosis |
| CN105947417A (en) * | 2016-06-28 | 2016-09-21 | 苏州华徕光电仪器有限公司 | Photoelectric instrument packing case provided with automatic drying system |
| WO2018018714A1 (en) * | 2016-07-27 | 2018-02-01 | 王鼎兴 | Pump for shell-and-tube heat exchanger |
| CN207391569U (en) * | 2017-10-18 | 2018-05-22 | 安简（北京）科技有限公司 | A kind of high-purity hydrogen generator |
| CN212451654U (en) * | 2020-02-16 | 2021-02-02 | 中科院大连化学物理研究所张家港产业技术研究院有限公司 | Electrolytic tank suitable for pressurizing circulating pump shell |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1506166A1 (en) * | 1987-06-15 | 1989-09-07 | Белорусский Политехнический Институт | Positive displacement pump |
| CN2086335U (en) * | 1991-01-31 | 1991-10-09 | 临清市石油机械厂 | Differential pressure seal device of centrifugal pump |
| CN2619950Y (en) * | 2003-05-03 | 2004-06-09 | 董晓白 | Full procedure integrated hydrogen-oxygen machine |
| CN201461428U (en) * | 2009-07-01 | 2010-05-12 | 滕连治 | Negative-pressure liquid circulation pump |
| CN101886624A (en) * | 2010-07-05 | 2010-11-17 | 苏州盟通利机电设备有限公司 | Vacuum pump without pressure difference |
| CN202246887U (en) * | 2011-09-15 | 2012-05-30 | 北京汉氢科技有限公司 | Movable large hydrogen production system device |
| CN203035518U (en) * | 2013-02-01 | 2013-07-03 | 天津市津能双鹤热力设备有限公司 | Low-pressure protection device of circulating pump |
| CN105697418A (en) * | 2016-01-25 | 2016-06-22 | 崔华 | High-pressure-resistant circulating pump for reverse osmosis |
| CN105947417A (en) * | 2016-06-28 | 2016-09-21 | 苏州华徕光电仪器有限公司 | Photoelectric instrument packing case provided with automatic drying system |
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