An alternating electromagnetic field-based industrial circulating water descaling system

Abstract

The utility model discloses an industrial circulating water descaling system based on alternating electromagnetic field belongs to industrial circulating water processing technical field. The system includes cooling pond, primary cooler, cooling tower and closed loop circulating pipeline, and the core configuration is installed in the electromagnetic descaler of water outlet main pipe and backwater main pipe, and is equipped with bypass filter pipeline, water quality detection unit and anticorrosive deposition structure. Electromagnetic descaler exports 120-200kHz sine wave alternating electromagnetic field, and promotes calcium magnesium ion in water to form suspended soft scale, and cooperates with the high -efficient impurity interception of grading filter pipeline, and water quality detection unit real -time feedback parameter to dynamic adjustment equipment working condition. The system does not need to add chemical reagent, can realize descaling, anti -scale function. Its simple structure, maintenance is convenient, and energy consumption is low and long service life, can significantly prolong the equipment life, reduce operating cost, is applicable to the industrial field circulating water system such as coking, and has environmental protection benefit and economic benefit.

Description

Technical Field

[0001] This utility model relates to the field of industrial water treatment technology, specifically to an industrial circulating water descaling system based on alternating electromagnetic fields. Background Technology

[0002] In industrial production, circulating cooling water systems are prone to scaling, equipment corrosion, and algae growth due to factors such as increased water temperature, changes in water flow velocity, water evaporation, and impurity concentration, severely impacting production stability. Traditional treatment methods primarily involve adding chemical agents and electrochemical descaling. Chemical methods require large amounts of water replenishment and drainage to reduce the concentration ratio, resulting in water waste and secondary pollution. Electrochemical descaling produces side effects such as sulfuric acid and hydrochloric acid, threatening pipeline and equipment safety and causing environmental problems. Existing technologies suffer from poor environmental performance, high resource consumption, and high maintenance costs, making it difficult to meet the requirements for zero discharge and high-efficiency operation of industrial circulating water. Utility Model Content

[0003] In view of the problems and shortcomings of the existing technology, this utility model provides an industrial circulating water descaling system based on alternating electromagnetic fields.

[0004] The technical solution of this utility model is as follows: An industrial circulating water descaling system based on alternating electromagnetic fields includes a cooling water tank, a primary cooler, and a cooling tower. The cooling water tank is located below the cooling tower and is connected to the primary cooler through a main outlet pipe. The primary cooler is connected to the cooling tower through a main return pipe to form a circulation loop.

[0005] The difference lies in that electromagnetic descaling devices are installed on the main outlet pipe and the main return pipe respectively. The electromagnetic descaling device includes a signal generator and an electromagnetic coil assembly. The electromagnetic coil assembly is wound around the outer wall of the circulating water main pipe, and the signal generator is electrically connected to the electromagnetic coil assembly. Downstream of the electromagnetic descaling device, on the main outlet and return water pipes, there is a bypass filter line. A filter and an electromagnetic check valve are connected to the bypass filter line. An electromagnetic check valve is also installed on the main pipe connected in parallel with the bypass filter line.

[0006] A bypass filter pipeline is installed, which is equipped with a filter and a solenoid check valve.

[0007] The bypass filter pipeline is provided in parallel with two pipelines, one of which is equipped with a coarse filter and the other with a coarse filter and a fine filter, and each pipeline is equipped with a solenoid one-way valve.

[0008] The filter is a self-cleaning filter and is detachably connected to the main circulating water pipeline, with its drain outlet connected to the drainage pipe.

[0009] The system also includes a water quality detection unit for detecting water quality parameters, which is installed on the main outlet or return water pipe. The water quality detection unit is connected to the electromagnetic descaling device to adjust the operating parameters of the electromagnetic descaling device according to the water quality.

[0010] The water quality detection unit includes a turbidity sensor and a conductivity sensor. Each sensor and probe is connected to the internal circulation water main pipeline, and the signal output terminal is electrically connected to the external control system.

[0011] The electromagnetic descaling device has a power of 100-200W, and the electromagnetic coil assembly adopts a multi-coil parallel structure.

[0012] The cooling water pool flows back to the main outlet pipe after passing through multiple parallel outlet branch pipes, and each outlet branch pipe is connected to at least one water pump.

[0013] Multiple primary coolers are installed in parallel and connected to the main outlet and return water pipes through independent branch pipes.

[0014] The inner wall of the cooling water pool is coated with an anti-corrosion coating, and the bottom of the pool is equipped with an inclined sedimentation tank. The bottom of the sedimentation tank is connected to the drainage unit through a sewage pipe, and a solenoid valve is installed on the sewage pipe.

[0015] The beneficial effects of this utility model are: This invention employs alternating electromagnetic field descaling technology, eliminating the need for chemical additives and avoiding secondary pollution, thus meeting green environmental protection requirements. The sinusoidal alternating magnetic field effectively promotes the formation of soft scale from calcium and magnesium ions in the water, which is then discharged with the water flow. Simultaneously, it dissolves existing scale, resulting in significant descaling and scale prevention effects. Real-time monitoring of water quality indicators by a water quality testing unit, combined with a bypass filter pipeline, achieves efficient impurity separation, improving the quality of circulating water and maintaining its colorless and clear state. The electromagnetic descaling system is simple in structure, easy to maintain, and has a long service life, effectively extending the lifespan of heat exchangers, pipelines, and other equipment, reducing equipment cleaning and replacement costs, and offering both economic and social benefits. It is suitable for various industrial circulating water systems in coking, chemical, and other industries. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment; Figure 2 for Figure 1 A partially enlarged view of the side-through filter pipeline in the first embodiment; Figure 3 for Figure 1 A partially enlarged view of the filter pipeline in the second embodiment; Detailed Implementation

[0017] The technical means adopted to achieve the intended purpose of this utility model will be further described below with reference to the accompanying drawings of the embodiments of this utility model.

[0018] Example 1 See Figure 1 An industrial circulating water descaling system based on alternating electromagnetic fields includes a cooling water tank, a primary cooler, and a cooling tower. The cooling water tank is located below the cooling tower and is connected to the primary cooler through a main outlet pipe. The primary cooler is connected to the cooling tower through a main return pipe to form a circulation loop.

[0019] The main difference between this utility model and the prior art is that electromagnetic descaling devices are respectively installed on the outlet main pipe and the return main pipe. The electromagnetic descaling device includes a signal generator and an electromagnetic coil assembly. The electromagnetic coil assembly is wound around the outer wall of the circulating water main pipe, and the signal generator is electrically connected to the electromagnetic coil assembly.

[0020] Specifically, a first electromagnetic descaling device is installed on the main outlet pipe, and a second electromagnetic descaling device is installed on the main return pipe. Both devices have a power of 150W, falling within the optimal power range of 100-200W, ensuring effective descaling while reducing energy consumption. The signal generator and electromagnetic coil assembly are electrically connected via a high-temperature resistant cable, providing a stable output of a 120-200kHz sinusoidal alternating electromagnetic signal. This frequency range precisely targets calcium and magnesium ions in the water, promoting the formation of soft scale rather than adhering to the inner wall of the pipes.

[0021] See Figure 1 and Figure 2 A bypass filter pipeline is installed downstream of the electromagnetic descaling unit on both the main outlet and return water pipes. In this embodiment, the bypass filter pipeline adopts a structure that is connected in parallel with the main pipe. This pipeline is equipped with a filter and an electromagnetic check valve, with the electromagnetic check valve located upstream of the filter. The main pipe connected in parallel with the bypass filter pipeline is also equipped with an electromagnetic check valve of the same model. The electromagnetic check valve is electrically connected to the external control system and can automatically switch the path according to the filter's operating status and water quality. When the system is running, the bypass filter pipeline check valve opens to ensure the filter is connected to the circulation pipeline; when the bypass filter pipeline is being cleaned or malfunctioning, the main pipe electromagnetic check valve opens to ensure continuous operation of the circulating water system. All filters are self-cleaning filters, detachably connected to the bypass filter pipeline via flanges for easy maintenance and replacement. The filter's drain port is connected to the drainage unit via a pipe. When the filter pressure differential reaches a set value, the drain valve automatically opens to discharge trapped impurities, ensuring filtration efficiency.

[0022] The system also includes a water quality detection unit, installed on either the outlet or return main pipe. In this embodiment, it is installed on the outlet main pipe near the precooler. The water quality detection unit includes a turbidity sensor and a conductivity sensor. The detection ends of each sensor are connected to the inside of the outlet main pipe, directly contacting the circulating water to obtain accurate data. The signal output ends of the sensors are electrically connected to the external control system via shielded cables. Simultaneously, the water quality detection unit is connected to two electromagnetic descaling units, enabling real-time monitoring of the turbidity and conductivity parameters of the circulating water. The data is then fed back to the control system, which automatically adjusts the operating parameters of the electromagnetic descaling units, such as output frequency and magnetic field strength, based on the water quality conditions. This dynamically optimizes the descaling effect, ensuring that the circulating water quality remains consistently excellent.

[0023] In this pump embodiment, the cooling water pool is located directly below the cooling tower. The bottom of the pool has an inclined sedimentation tank, which uses gravity to accelerate the sedimentation and accumulation of flocs and impurities in the water. The bottom of the sedimentation tank is connected to the drainage unit via a drain pipe. A solenoid valve is installed on the drain pipe, which is periodically opened by an external control system to periodically discharge sedimented impurities and maintain the cleanliness of the cooling water pool. The cooling water pool is connected to the main outlet pipe via three parallel branch pipes. Each branch pipe is connected to a vertical centrifugal pump. The three pumps can be flexibly started and stopped according to the system's circulating water demand, ensuring stable water flow in the main outlet pipe and meeting the cooling requirements of the subsequent primary cooler. The primary cooler uses three plate heat exchangers connected in parallel. Each primary cooler is connected to both the main outlet and return pipes via independent branch pipes. Shut-off valves and flow meters are installed on the branch pipes to facilitate individual control of the operating status and flow monitoring of each primary cooler.

[0024] Working principle: After the system starts up, the circulating water in the cooling water tank is pressurized by three parallel water pumps and then flows into the main outlet pipe through the branch pipes. The water first passes through the first electromagnetic descaling unit. The signal generator outputs a 120-200kHz sinusoidal alternating electromagnetic signal, which forms a uniform annular alternating magnetic field in the main outlet pipe through the electromagnetic coil assembly. Under the action of the magnetic field, cations such as calcium and magnesium in the water and anions such as carbonate and sulfate form a large number of suspended crystal nuclei. Mineral ions are adsorbed on the nuclei to form soft scale, preventing it from adhering to the surfaces of subsequent pipes and primary coolers. At the same time, the magnetic field promotes the dissolution and removal of existing scale in the pipes. The circulating water treated by the electromagnetic descaling unit enters the three parallel primary coolers through branch pipes to exchange heat with the high-temperature medium generated by industrial production, achieving cooling. After heat exchange, the hot water flows through the return water main to the second electromagnetic descaling unit, where it is treated again by an alternating magnetic field to further remove residual scale-forming ions and tiny scale particles from the water. The hot water then flows into the cooling tower, where it comes into countercurrent contact with cold air. The cooled water then falls into the cooling water pool to complete one cycle.

[0025] During the circulation process, the bypass filter line filters the circulating water, trapping particulate impurities and soft scale to ensure clean water quality. The water quality monitoring unit monitors turbidity and conductivity in real time. When water quality parameters exceed standards, the control system promptly adjusts the operating parameters of the electromagnetic descaling unit and controls the switching of the electromagnetic check valves between the bypass filter line and the main line to ensure stable system operation. The sedimentation tank at the bottom of the cooling water pool collects precipitated flocculent impurities, which are discharged through a timed electromagnetic valve, further maintaining the cleanliness of the circulating water system. The entire system requires no chemical additives, achieving a green, efficient, and energy-saving descaling goal while extending equipment lifespan and reducing operating costs.

[0026] Example 2 The difference from Example 1 is that in this example, the bypass filtration pipeline adopts a structure with two parallel connections. One pipeline has a coarse filter, mainly used to intercept larger particles and soft scale in the water; the other pipeline has a coarse filter and a fine filter in sequence, which can further intercept fine particles and impurities, achieving staged filtration and improving the filtration effect. Both bypass filtration pipelines are equipped with electromagnetic check valves, and the main pipeline connected in parallel with the bypass filtration pipelines also has a similar electromagnetic check valve. The electromagnetic check valves are electrically connected to an external control system and can automatically switch paths according to the filter's operating status and water quality. When the bypass filtration pipeline is being cleaned or malfunctioning, the electromagnetic check valve on the main pipeline opens, ensuring continuous operation of the circulating water system. All filters are self-cleaning filters, detachably connected to the bypass filtration pipelines via flanges for easy maintenance and replacement. The filter's drain port is connected to the drainage unit via a pipe. When the filter pressure differential reaches a set value, the drain valve automatically opens to discharge the intercepted impurities, ensuring filtration efficiency.

[0027] During the circulation process, the bypass filter pipeline performs staged filtration of the circulating water. The coarse filter traps larger particles and soft scale, while the fine filter removes fine impurities, ensuring the cleanliness of the circulating water. The water quality detection unit monitors turbidity and conductivity in real time. When the turbidity exceeds the standard, the control system promptly adjusts the operating parameters of the electromagnetic descaling device (increases the frequency) and controls the dual filter pipeline of the bypass filter pipeline to be connected to enhance the filtration effect. When the turbidity is less than the set value, the control system promptly adjusts the operating parameters of the electromagnetic descaling device (decreases the frequency) and controls the single filter pipeline of the bypass filter pipeline to be connected to reduce system energy consumption.

[0028] The above description represents a preferred embodiment of the present invention. However, the present invention is not limited to the above-described embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, all variations, equivalent substitutions, and improvements made without departing from the concept of the present invention should be included within the protection scope of the present invention.

Claims

1. An industrial circulating water descaling system based on alternating electromagnetic fields, comprising a cooling water tank, a precooler, and a cooling tower, wherein the cooling water tank is located below the cooling tower and connected to the precooler via a main outlet pipe, and the precooler is connected to the cooling tower via a main return pipe to form a circulation loop; characterized in that, Electromagnetic descaling devices are installed on the main outlet pipe and the main return pipe respectively. The electromagnetic descaling device includes a signal generator and an electromagnetic coil assembly. The electromagnetic coil assembly is wound around the outer wall of the main circulating water pipe. The signal generator is electrically connected to the electromagnetic coil assembly. Downstream of the electromagnetic descaling device, on the main outlet and return water pipes, there is a bypass filter pipeline. A filter and an electromagnetic check valve are connected to the bypass filter pipeline. An electromagnetic check valve is also installed on the main pipeline connected in parallel with the bypass filter pipeline.

2. The industrial circulating water descaling system according to claim 1, characterized in that, A bypass filter pipeline is installed, which is equipped with a filter and a solenoid check valve.

3. The industrial circulating water descaling system according to claim 1, characterized in that, The bypass filter pipeline is provided in parallel with two pipelines, one of which is equipped with a coarse filter and the other with a coarse filter and a fine filter, and each pipeline is equipped with a solenoid one-way valve.

4. The industrial circulating water descaling system according to claim 1, characterized in that, The filter is a self-cleaning filter and is detachably connected to the main circulating water pipeline, with its drain outlet connected to the drainage pipe.

5. The industrial circulating water descaling system according to any one of claims 1-4, characterized in that, The system also includes a water quality detection unit for detecting water quality parameters, which is installed on the main outlet or return water pipe. The water quality detection unit is connected to the electromagnetic descaling device to adjust the operating parameters of the electromagnetic descaling device according to the water quality.

6. The industrial circulating water descaling system according to claim 5, characterized in that, The water quality detection unit includes a turbidity sensor and a conductivity sensor. Each sensor and probe is connected to the internal circulation water main pipeline, and the signal output terminal is electrically connected to the external control system.

7. The industrial circulating water descaling system according to claim 6, characterized in that, The electromagnetic descaling device has a power of 100-200W, and the electromagnetic coil assembly adopts a multi-coil parallel structure.

8. The industrial circulating water descaling system according to claim 6, characterized in that, The cooling water pool flows back to the main outlet pipe after passing through multiple parallel outlet branch pipes, and each outlet branch pipe is connected to at least one water pump.

9. The industrial circulating water descaling system according to claim 8, characterized in that, Multiple primary coolers are installed in parallel and connected to the main outlet and return water pipes through independent branch pipes.

10. The industrial circulating water descaling system according to claim 9, characterized in that, The inner wall of the cooling water pool is coated with an anti-corrosion coating, and the bottom of the pool is equipped with an inclined sedimentation tank. The bottom of the sedimentation tank is connected to the drainage unit through a sewage pipe, and a solenoid valve is installed on the sewage pipe.

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