Large-load wet air cooling energy-saving control system and method
By installing a connecting component, a water supply component, and a drainage component in the wet air cooler, combined with a level gauge and a conductivity measuring instrument, real-time detection and control of the water tank level and water quality are achieved. This solves the problems of large overflow water volume and substandard water quality in high-load wet air coolers, and realizes energy saving, consumption reduction, and long-term operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-27
- Publication Date
- 2026-03-13
AI Technical Summary
High-load wet air coolers in industrial applications suffer from problems such as large overflow water volume, difficulty in accurately controlling the amount of water to be added, substandard water quality leading to equipment corrosion, and high wastewater treatment costs.
It employs a connecting component, a water supply component, a drainage component, and a control module. Through a level gauge and a conductivity meter, it achieves real-time detection and control of the water tank level and water quality. Combined with a water supply regulating valve and a sewage discharge switch valve, it achieves precise water supply and automatic sewage discharge.
It achieves energy saving and consumption reduction, ensures long-term equipment operation, accurately controls water replenishment, avoids equipment corrosion caused by substandard water quality, and reduces sewage treatment costs.
Smart Images
Figure CN121655324A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of air cooler technology, and in particular to an energy-saving control system and method for high-load wet air cooling. Background Technology
[0002] Currently, wet air-cooled air-cooled systems in industry experience significant overflow water volumes from their water tanks, especially high-load wet air-coolers. This excessive water replenishment is primarily due to the following reasons: 1) High-load wet air-coolers have high evaporation rates, making precise control of the replenishment volume impossible; 2) When the water level in the tank is lower than the overflow level, the circulating pump of the wet air-cooler is prone to cavitation, causing pump damage; 3) As the water in the tank continuously circulates, the water quality is prone to becoming substandard, leading to equipment corrosion. Therefore, demineralized water needs to be continuously added to the tank, resulting in substantial water overflow and waste. Furthermore, the overflow water needs to be sent to a wastewater treatment plant, further increasing wastewater treatment costs.
[0003] To achieve energy conservation and consumption reduction and ensure long-term operation of equipment, precise control of water replenishment is crucial. Summary of the Invention
[0004] In order to solve all or some of the above problems, the present invention aims to provide an energy-saving control system and method for high-load wet air cooling.
[0005] The present invention solves its problems through the following technical solution: An energy-saving control system for high-load wet air cooling includes a connecting component, a water supply component, a drainage component, and a control module. Each wet air cooler is equipped with a corresponding water tank. Each water tank has a connecting port at the same location, and the connecting ports are connected by the connecting component. The connecting component is equipped with a conductivity meter. Each water tank has a water supply port, and the water supply component is used to supply demineralized water to each water tank through the water supply port. The water supply component is equipped with a water supply regulating valve. Each water tank has a drain port, and each drain port is connected to the drainage component. The drainage component is equipped with a drain switch valve. Each water tank is equipped with a level gauge. The conductivity meter, water supply regulating valve, drain switch valve, and level gauge are all communicatively connected to the control module.
[0006] Optionally, the connecting component includes connecting branch pipes and connecting main pipes, with each end of each connecting branch pipe connected to the connecting main pipe and a connecting port, respectively. The conductivity measuring instrument is installed on the connecting main pipe, and each connecting branch pipe is equipped with a gate valve.
[0007] Optionally, the water replenishment assembly includes water replenishment branch pipes and water replenishment main pipes. The two ends of each water replenishment branch pipe are connected to the water replenishment main pipe and the water inlet, respectively. The water replenishment regulating valve is provided on the water replenishment main pipe, and each water replenishment branch pipe is provided with a gate valve.
[0008] Optionally, the drainage assembly includes drainage branch pipes and drainage main pipes, with each drainage branch pipe connected to the drainage main pipe and a sewage outlet at both ends, respectively. The sewage discharge switch valve is located on the drainage main pipe, and each drainage branch pipe is equipped with a gate valve.
[0009] Optionally, the connecting port is located at a height of 200mm from the bottom of each water tank.
[0010] A method for an energy-saving control system for high-load wet air cooling, as described above, includes the following steps: When the liquid level detected by the level gauge is lower than the low water level alarm value, the control module opens the water supply regulating valve to replenish the water tank; when the liquid level exceeds the high water level alarm value, the control module closes the water supply regulating valve; by adjusting the opening of the water supply regulating valve according to the detected liquid level, precise control of water tank replenishment is achieved; when the conductivity value detected by the conductivity measuring instrument is higher than the conductivity alarm value, the control module opens the drain valve and simultaneously adjusts the opening of the water supply regulating valve. After a certain period of time, the drain valve and the water supply regulating valve are closed. After the system stabilizes, the conductivity value is detected until it is lower than the conductivity alarm value, at which point the energy-saving control system returns to normal control status.
[0011] In summary, the technical effects and advantages of this invention are as follows: This invention can achieve energy saving and consumption reduction, ensure long-term operation of equipment, and accurately control the amount of water replenishment; it has the advantages of strong applicability, high operational flexibility, stable operation, and high degree of automation. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of an energy-saving control system for high-load wet air cooling in one embodiment of the present invention.
[0014] Among them, 1. conductivity measuring instrument; 2. level gauge; 3. connecting branch pipe; 4. connecting main pipe; 5. water supply branch pipe; 6. water supply main pipe; 7. drainage branch pipe; 8. drainage main pipe. Detailed Implementation
[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] This embodiment addresses the characteristics of high-load industrial wet air coolers by providing an energy-saving control system for high-load wet air cooling, such as... Figure 1 As shown, the system includes a connecting component, a water supply component, a drainage component, and a control module. Each wet air cooler is equipped with a corresponding water tank. Each water tank has a connecting port at the same location, and these ports are connected by a connecting component. The connecting component is equipped with a conductivity meter 1. Each water tank has a water supply port, and the water supply component is used to supply demineralized water to each water tank through these ports. The water supply component is equipped with a water supply regulating valve. Each water tank has a drain port, and these drain ports are connected to the drainage component. The drainage component is equipped with a drain switch valve. Each water tank is equipped with a level gauge 2. The conductivity meter 1, the water supply regulating valve, the drain switch valve, and the level gauge 2 are all communicatively connected to the control module.
[0017] Specifically, the connecting components include connecting branch pipes 3 and connecting main pipes 4. Each connecting branch pipe 3 is connected to the connecting main pipe 4 and a connecting port at both ends. The conductivity meter 1 is installed on the connecting main pipe 4, and each connecting branch pipe 3 is equipped with a gate valve. By opening connecting holes at appropriate locations in the wet air-cooled water tanks and connecting all water tanks through pipelines of appropriate diameters, the liquid level of the entire water tank system is unified and stable. Simultaneously, by increasing the volume of the circulating water system, excessive water overflow and waste due to excessively high liquid levels in a single water tank system are avoided. A level gauge 2 is installed in a water tank, and the detected value is transmitted to the control module for real-time detection and control of the liquid level. When the water level in a tank is lower than a certain low water level alarm value, the control module opens the water replenishment regulating valve to replenish the tank; when the water level exceeds a certain high water level alarm value, the control module closes the water replenishment regulating valve, achieving energy-saving control of water replenishment to the tank.
[0018] Specifically, the water replenishment assembly includes water replenishment branch pipes 5 and a water replenishment main pipe 6. Each end of the water replenishment branch pipe 5 is connected to the water replenishment main pipe 6 and a water inlet, respectively. A water replenishment regulating valve is located on the water replenishment main pipe 6, and each water replenishment branch pipe 5 is equipped with a gate valve. The water replenishment regulating valve receives signals from the control module to open, achieving automatic water replenishment based on the water tank level.
[0019] Specifically, the drainage assembly includes drainage branch pipes 7 and a main drainage pipe 8. Each drainage branch pipe 7 is connected at both ends to the main drainage pipe 8 and a sewage outlet, respectively. A sewage discharge switch valve is installed on the main drainage pipe 8, and each drainage branch pipe 7 is equipped with a gate valve. To achieve automatic sewage discharge, a sewage discharge switch valve is installed on the main sewage discharge line of the water tank. By receiving signals from the control module, the valve automatically discharges water when the water quality in the water tank exceeds the standard.
[0020] Optionally, the connecting port is located at a height of 200mm from the bottom of each water tank.
[0021] In this embodiment, a conductivity meter 1 is installed on the main connecting pipe 4, and the detected value is transmitted to the control module to realize real-time detection and control of the water quality of the circulating water in the water tank, so as to avoid equipment scaling and corrosion leakage caused by substandard water quality.
[0022] This embodiment also provides a method for an energy-saving control system for the aforementioned high-load wet air cooling system, comprising the following steps: When the liquid level detected by level gauge 2 is lower than the low water level alarm value, the control module opens the water replenishment regulating valve to replenish the water tank; when the liquid level exceeds the high water level alarm value, the control module closes the water replenishment regulating valve; by adjusting the opening of the water replenishment regulating valve according to the detected liquid level, precise control of water tank replenishment is achieved; when the conductivity value detected by conductivity meter 1 is higher than the conductivity alarm value, the control module opens the drain valve and adjusts the opening of the water replenishment regulating valve at the same time. After a certain period of time, the drain valve and the water replenishment regulating valve are closed. After the system stabilizes, the conductivity value is detected until the conductivity value is lower than the conductivity alarm value, and the energy-saving control system returns to normal control state.
[0023] This embodiment describes a wet air cooler (A-101A / B / C / D) in a refinery, where each wet air cooler is equipped with a corresponding water tank. A DN150 nozzle is installed 200mm from the bottom of each water tank as a connection port, and all water tanks are connected through this nozzle to achieve uniform and stable liquid levels throughout the system. Additionally, a gate valve is installed on each connecting pipe for operational flexibility under various conditions and for isolation during maintenance.
[0024] A remote level gauge 2 is installed in water tank A to detect the water level in real time and transmit the detected level to the control module. When the detected level is below 50%, a low water level alarm is triggered, and the control module opens the water replenishment regulating valve to replenish the water tank; when the level exceeds 80%, a high water level alarm is triggered, and the control module closes the water replenishment regulating valve. By adjusting the opening of the water replenishment regulating valve according to the detected level, precise control of water replenishment to the water tank can be achieved.
[0025] A water supply regulating valve is installed on the main water supply pipe 6 of the demineralized water (temperature 40℃, pressure 0.5MPag) in the water tank. This regulating valve receives a signal from the control module and adjusts its opening according to the signal strength to achieve automatic water supply based on the water tank level.
[0026] A conductivity meter 1 is installed on the main connecting pipe 4, and the detected value is transmitted to the control module. When the detected conductivity value is higher than 100 μs / cm, the energy-saving control system enters the sewage discharge state, opens the sewage discharge switch valve on the sewage discharge main pipe, and simultaneously opens the water supply regulating valve to 90%. After 30 minutes, the sewage discharge switch valve and the water supply regulating valve are closed. After the system stabilizes, the conductivity value is detected until it falls below the alarm value, at which point the energy-saving control system returns to normal control. Through the above, real-time detection and control of the circulating water quality in the water tank is achieved, avoiding equipment scaling, corrosion, and leakage caused by substandard water quality.
[0027] In summary, this embodiment can achieve energy saving and consumption reduction, ensure long-term operation of equipment, and accurately control the amount of water replenishment; it has the advantages of strong applicability, high operational flexibility, stable operation, low energy consumption, and high degree of automation.
[0028] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
[0029] Furthermore, the terms "a," "two," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.
[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. An energy-saving control system for high-load wet air cooling, characterized in that, The system includes a connecting component, a water supply component, a drainage component, and a control module. Each wet air cooler is equipped with a corresponding water tank. Each water tank has a connecting port at the same location, and these ports are connected by a connecting component. The connecting component is equipped with a conductivity meter. Each water tank has a water supply port, which is used to supply demineralized water to each water tank. The water supply component is equipped with a water supply regulating valve. Each water tank has a drain port, which is connected to the drainage component. The drainage component is equipped with a drain valve. Each water tank is equipped with a level gauge. The conductivity meter, water supply regulating valve, drain valve, and level gauge are all communicatively connected to the control module.
2. The energy-saving control system for high-load wet air cooling according to claim 1, characterized in that, The connecting component includes connecting branch pipes and connecting main pipes. The two ends of each connecting branch pipe are connected to the connecting main pipe and the connecting port, respectively. The conductivity measuring instrument is installed on the connecting main pipe, and each connecting branch pipe is equipped with a gate valve.
3. The energy-saving control system for high-load wet air cooling according to claim 1, characterized in that, The water replenishment assembly includes water replenishment branch pipes and water replenishment main pipes. The two ends of each water replenishment branch pipe are connected to the water replenishment main pipe and the water inlet, respectively. The water replenishment regulating valve is located on the water replenishment main pipe, and each water replenishment branch pipe is equipped with a gate valve.
4. The energy-saving control system for high-load wet air cooling according to claim 1, characterized in that, The drainage assembly includes drainage branch pipes and drainage main pipes. The two ends of each drainage branch pipe are connected to the drainage main pipe and the sewage outlet, respectively. The sewage discharge switch valve is located on the drainage main pipe, and each drainage branch pipe is equipped with a gate valve.
5. The energy-saving control system for high-load wet air cooling according to claim 1, characterized in that, The connecting port is located at a height of 200mm from the bottom of each water tank.
6. A method for an energy-saving control system for high-load wet air cooling as described in any one of claims 1-5, characterized in that, Includes the following steps: When the liquid level detected by the level gauge is lower than the low water level alarm value, the control module opens the water supply regulating valve to replenish the water tank; when the liquid level exceeds the high water level alarm value, the control module closes the water supply regulating valve; by adjusting the opening of the water supply regulating valve according to the detected liquid level, precise control of water tank replenishment is achieved; when the conductivity value detected by the conductivity measuring instrument is higher than the conductivity alarm value, the control module opens the drain valve and simultaneously adjusts the opening of the water supply regulating valve. After a certain period of time, the drain valve and the water supply regulating valve are closed. After the system stabilizes, the conductivity value is detected until it is lower than the conductivity alarm value, at which point the energy-saving control system returns to normal control status.