CN217973418U - Large-scale electrolysis trough alkali jar liquid level initiative governing system - Google Patents
Large-scale electrolysis trough alkali jar liquid level initiative governing system Download PDFInfo
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- CN217973418U CN217973418U CN202221016231.8U CN202221016231U CN217973418U CN 217973418 U CN217973418 U CN 217973418U CN 202221016231 U CN202221016231 U CN 202221016231U CN 217973418 U CN217973418 U CN 217973418U
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Abstract
The utility model relates to an active liquid level regulating system for an alkali tank of a large-scale electrolytic cell, which comprises a control module and at least one alkali tank liquid level compensation module; each alkali tank liquid level compensation module comprises an alkali liquid tank, an alkali liquid compensation tank, an electromagnetic valve, an alkali liquid pump and a liquid level sensor; the liquid level sensor is arranged in the alkali liquor tank; the alkali liquor tank and the alkali liquor compensation tank are communicated with the alkali liquor pump through electromagnetic valves connected in series; and the control module is respectively connected with the electromagnetic valve, the lye pump and the liquid level sensor in each lye tank liquid level compensation module. Compared with the prior art, the utility model discloses an active control of lye tank liquid level has promoted hydrogen manufacturing system's operation continuity and efficiency.
Description
Technical Field
The utility model relates to a water electrolysis hydrogen manufacturing technical field especially relates to a large-scale electrolysis trough alkali jar liquid level initiative governing system.
Background
Hydrogen energy stands out in a variety of new energy sources due to its advantages such as calorific value and cleanliness. The hydrogen production by water electrolysis is an important development direction of the current hydrogen energy industry, and usually, KOH is used as electrolyte to carry out reaction, and the electrochemical reaction for decomposing water into hydrogen and oxygen by the action of direct current is adopted. The alkaline water electrolysis hydrogen production technology is the most mature technology at present, safe and reliable, long in operation life and good in economic performance, and is one of the most potential and mature technologies in large-scale hydrogen production. The water electrolysis hydrogen production equipment develops through the development process from small size to large size, from normal pressure to pressurization, and from manual control to PLC full-automatic control.
Measurement and control technologies are widely applied to electronic information and industrial production, including detection technologies and control technologies. With the continuous development of microelectronic technology and computer technology, the indexes of precision, stability, reliability and the like are continuously improved while the modern measurement and control technology pursues system intellectualization, and the water electrolysis hydrogen production equipment is gradually developed from an initial pneumatic instrument to an electric instrument control stage. From manual control to semi-automatic control and to gradually adopting a computer control mode, all production processes can be automatically completed according to preset design by using a large number of intelligent instruments, so that the personnel intervention is reduced, the operation safety and reliability of the device are greatly improved, and the economic cost is reduced.
Electrolyte (KOH) itself does not consume as the reactant, but the alkali liquor can be taken away along with the gas motion in the process of hydrogen production in the electrolytic cell, so that the liquid level in the alkali liquor tank fluctuates along with the electrochemical reaction, and a factory needs to ensure that the liquid level in the alkali liquor tank is in a specific interval for ensuring the smooth proceeding of the electrolytic process. The lye tank that present large-scale alkaline electrolysis system used usually detects the lye volume by level sensor, stops after discovering the liquid level anomaly and compensates lye, consumes time power and influences hydrogen manufacturing work efficiency by a wide margin.
Disclosure of Invention
The utility model aims at overcoming the defects existing in the prior art and providing a large-scale electrolytic tank alkali tank liquid level active adjusting system, realizing the active control of the liquid level of the alkali tank and promoting the operation continuity and efficiency of a hydrogen production system.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a large-scale electrolytic cell alkali tank liquid level active adjusting system, which comprises a control module and at least one alkali tank liquid level compensation module; each alkali tank liquid level compensation module comprises an alkali liquid tank, an alkali liquid compensation tank, an electromagnetic valve, an alkali liquid pump and a liquid level sensor;
the liquid level sensor is arranged in the alkali liquor tank; the alkali liquor tank and the alkali liquor compensation tank are communicated with the alkali liquor pump through electromagnetic valves connected in series; and the control module is respectively connected with the electromagnetic valve, the lye pump and the liquid level sensor in each lye tank liquid level compensation module.
Preferably, the number of the alkali tank liquid level compensation modules is 2.
Preferably, the control module is a PLC control panel.
Preferably, the level sensor is a magnetic float level gauge.
Preferably, the system is also provided with a display module for displaying the liquid level of the lye tank; the display module is connected with the control module.
Preferably, the system is also provided with an alarm module for carrying out safety protection on the liquid level height of the lye tank.
Preferably, the system is further provided with a remote control end in communication connection with the control module.
Compared with the prior art, the utility model has the advantages of it is following:
1) The PLC control panel is adopted, the small alkali liquor compensation tank can be used for realizing the compensation of the alkali liquor amount in the large tank, the liquid level is automatically adjusted to the set height, the manual adjustment of the liquid level is avoided, the active control of the liquid level of the alkali liquor tank is realized, and the operation continuity and the efficiency of the hydrogen production system are improved;
2) The liquid level sensor is adopted to obtain the liquid level height of the alkali liquor tank in real time and display the liquid level data in real time through the display module, so that the sensitivity and the real-time performance are stronger;
3) The magnetic floater liquid level meter ensures the effectiveness of real-time liquid level signals;
4) The liquid level is always in a safe range by adopting the alarm module, the safety liquid level height of the alkali liquor tank is monitored in real time, and the safety is higher;
5) The remote control end is arranged, so that the long-distance remote control of the liquid level of the alkali liquor tank is realized, and the system is more convenient and faster and has better real-time performance;
6) The liquid level control accuracy is improved by adopting modern electric instruments comprising a liquid level sensor, an electromagnetic valve, an alkali liquor pump and the like.
Drawings
Fig. 1 is a schematic diagram of the system structure of the utility model;
FIG. 2 is a schematic diagram of the control process of the present invention;
the system comprises a control module 1, an alkali liquor tank 2, an alkali liquor compensation tank 3, an electromagnetic valve 4, an alkali liquor pump 5 and a liquid level sensor 6.
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 some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Examples
The embodiment provides a large-scale electrolytic cell alkali tank liquid level active adjusting system, which comprises a control module 1 and two alkali tank liquid level compensation modules; fig. 1 is a schematic structural diagram of a single lye tank liquid level compensation module, each of which comprises a lye tank 2, a lye compensation tank 3, an electromagnetic valve 4, a lye pump 5 and a liquid level sensor 6;
the liquid level sensor 6 is arranged in the lye tank 2; the alkali liquor tank 2 and the alkali liquor compensation tank 3 are communicated with an alkali liquor pump 5 through an electromagnetic valve 4 connected in series; the control module 1 is respectively connected with the electromagnetic valve 4, the lye pump 5 and the liquid level sensor 6 in each lye tank liquid level compensation module.
The control module 1 is a PLC control panel.
The liquid level sensor 6 is a magnetic float liquid level meter.
The system is also provided with a display module for displaying the liquid level of the lye tank 2; the display module is connected with the control module 1.
The system is also provided with an alarm module for carrying out safety protection on the liquid level of the lye tank 2 and a remote control end in communication connection with the control module 1.
The realization process of the active liquid level regulating system for the alkali tank of the large-scale electrolytic tank is as follows: the electrolytic hydrogen production system operates, and the liquid level sensor 6 in the lye tank 2 transmits the acquired liquid level signal to the control module 1; the liquid level heights of the two current lye tanks are directly read through the control module 1; the alkali liquor tank 2 and the alkali liquor compensation tank 3 are in an off-connection state at the moment, and the electromagnetic valve and the alkali liquor pump wait for control signals; when the liquid level in the lye tank 1 needs to be increased or decreased according to the set requirement, the control module 1 sends corresponding control signals to the electromagnetic valve 4 and the lye pump 5; the electromagnetic valve 4 and the lye pump 5 are opened under the action of a control signal, lye flows into the lye tank 2 from the lye compensation tank 3 or flows into the lye compensation tank 3 from the lye tank 2, and the height of the liquid level in the lye tank 2 rises or falls; when the height meets the set requirement, the electromagnetic valve 4 and the lye pump 5 are closed through control signals.
The specific control process of the control module is shown in fig. 2, and includes:
101: the PLC judges the liquid level interval in real time; if the liquid level is not lower than the set lower limit, executing 102, otherwise executing 105;
102: the PLC judges the liquid level interval again, if the liquid level interval is higher than the set lower limit, the step 110 is executed;
103: the liquid level sensor 6 collects the liquid level height of the lye tank and executes 104;
104: the liquid level sensor 6 transmits the acquired liquid level height data to a PLC control panel, and the operation is repeatedly executed 101;
105: the PLC control panel sends an electric signal to the electromagnetic valve 4 and the lye pump 5 to be started and to operate positively, lye flows into the lye tank, and 106 is executed;
106: sending a signal to a PLC control panel again by a liquid level sensor 6 in the lye tank 2, and executing 107;
107: the PLC judges the liquid level interval which is input, if the liquid level height is still not higher than the set lower limit, 109 is executed, otherwise 108 is executed;
108: the PLC control panel sends a closing signal to the electromagnetic valve 4 and the lye pump 5, and the electromagnetic valve 4 and the lye pump 5 are closed;
109: continuing to execute 105;
110: the PLC control panel sends an electric signal to the electromagnetic valve 4 and the alkali liquor pump 5 to start and reversely operate, alkali liquor flows into the small alkali liquor compensation tank, and 111 is executed;
111: sending a signal to the PLC control panel again by the liquid level sensor 6 in the lye tank 2, and executing 112;
112: the PLC judges whether the liquid level interval is input and reaches the set standard liquid level of 150mm, if so, the step 113 is executed;
113: the PLC control panel sends a closing signal to the electromagnetic valve 4 and the lye pump 5, and the electromagnetic valve 4 and the lye pump 5 are closed;
114: execution continues at 110.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The active liquid level regulating system for the alkali tank of the large-scale electrolytic cell is characterized by comprising a control module (1) and at least one alkali tank liquid level compensation module; each alkali tank liquid level compensation module comprises an alkali liquid tank (2), an alkali liquid compensation tank (3), an electromagnetic valve (4), an alkali liquid pump (5) and a liquid level sensor (6);
the liquid level sensor (6) is arranged in the lye tank (2); the alkali liquor tank (2) and the alkali liquor compensation tank (3) are communicated with an alkali liquor pump (5) through a solenoid valve (4) connected in series; the control module (1) is respectively connected with the electromagnetic valve (4), the lye pump (5) and the liquid level sensor (6) in each lye tank liquid level compensation module.
2. The active adjusting system for the alkali tank liquid level of the large-scale electrolytic cell according to claim 1, wherein the number of the alkali tank liquid level compensation modules is 2.
3. Active regulation system of the caustic pot liquid level of a large electrolytic cell according to claim 1, characterized by the fact that the control module (1) is a PLC.
4. Active regulation system of the liquid level in alkaline tanks of large electrolytic cells according to claim 1, characterized by the fact that the level sensor (6) is a magnetic float level meter.
5. The active adjusting system for the liquid level of the alkali tank of the large-scale electrolytic cell as claimed in claim 1, characterized in that the system is further provided with a display module for displaying the liquid level of the alkali tank (2); the display module is connected with the control module (1).
6. Active regulation system of the lye tank levels of a large-scale electrolyser as claimed in claim 1 wherein the system is further provided with an alarm module for safety protection of the lye tank (2) level.
7. Active regulation system of the alkali tank liquid level in large electrolytic cell according to claim 1, characterized in that the system is further provided with a remote control end in communication connection with the control module (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221016231.8U CN217973418U (en) | 2022-04-28 | 2022-04-28 | Large-scale electrolysis trough alkali jar liquid level initiative governing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221016231.8U CN217973418U (en) | 2022-04-28 | 2022-04-28 | Large-scale electrolysis trough alkali jar liquid level initiative governing system |
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| CN217973418U true CN217973418U (en) | 2022-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855185A (en) * | 2022-04-28 | 2022-08-05 | 同济大学 | Active liquid level adjusting system and method for alkali tank of large electrolytic cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855185A (en) * | 2022-04-28 | 2022-08-05 | 同济大学 | Active liquid level adjusting system and method for alkali tank of large electrolytic cell |
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