A control mechanism for a centralized circulating cooling water system

Abstract

The present invention relates to a control mechanism for a centralized circulating cooling water system, and specifically to the technical field of cooling water systems. The present invention provides a centralized circulating cooling water system control mechanism, in which a hot water pool and a cold water pool are provided. The hot water pool and the cold water pool are respectively provided with at least three bottom valves, and the bottom valves are connected to a cooling water tower via a circulating cooling water pipe. The output end of the bottom valve in the cold water pool is connected to a heat exchanger mechanism via a circulating cooling water pipe, and the output end of the heat exchanger mechanism is connected to the hot water pool via a circulating cooling water pipe. The present invention can reduce the energy consumption of equipment use, and reduces cooling energy consumption by utilizing integrated water supply and large-tonnage water capacity. At the same time, it also utilizes temperature, pressure, flow monitoring and other logic to control the variable frequency operation or shutdown of the cooling tower and water supply pump group, thereby achieving the effect of energy saving and consumption reduction.

Description

[0001] This case is a divisional case of the application with application number 202410182082.X, and the invention name is "A control mechanism for a centralized circulating cooling water system". The application date of the original application is February 19, 2024. Technical Field

[0002] The invention belongs to the technical field of cooling water systems, and in particular relates to a control mechanism for a centralized circulating cooling water system. Background Art

[0003] In the heating industry, medium-frequency induction heating furnaces are used in large quantities due to their rapid heating, easy temperature control, and high production efficiency. Because of these characteristics, continuous medium-frequency induction heating furnaces require circulating water for cooling during operation to protect the conductors and guide rails. A circulating cooling water system consists of a water tank, a cooling tower, and a circulating water pump. Currently, most circulating cooling water systems are based on a one-to-one configuration, with one circulating cooling water system corresponding to one medium-frequency induction heating furnace. This one-to-one matching model is suitable for production plants with fewer production lines. However, for production workshops with more than 10 production lines, the disadvantages of this one-to-one circulating cooling system will become apparent. The main shortcomings are: 1. The energy consumption is large. The flow and head of a single circulating water pump generally have a surplus match, resulting in a waste of water flow and energy resources, increasing electricity consumption, and the cooling water tower fan is in real-time operation; 2. The procurement cost is high. In order to ensure the normal use of the circulating cooling system, a water tower is generally equipped with two water pumps. When one water pump fails, the other water pump group can be started, but this also increases the procurement cost; 3. The circulating fan brings a large amount of water vapor into the factory, resulting in an increase in the factory's environmental humidity. The reactors and inverters of the factory equipment often suffer from short circuits, line burns, equipment failure and other faults.

[0004] The prior art provides some solutions, such as patent KR101717961B1, which relates to a cooling system for the heat treatment process of continuously moving steel plates. It mainly provides a rapid cooling system and pressure control method for suppressing the vibration of the steel plates and improving the cooling efficiency. During the rapid cooling process, a hydrogen-nitrogen mixed gas containing a high concentration of hydrogen is divided into a cooling chamber. The ejected gas is recirculated through the induction heating furnace, and the recycled gas flows back into the cooling chamber, thereby completing a cooling operation. At the same time, a sealing device is installed on the outlet side of the steel plate. The sealing device has the function of cutting off the inflow of external airflow. The circulating cooling system formed by the induction heating furnace and the sealing device is conducive to improving the cooling efficiency of the airflow, reducing the required energy consumption, and avoiding resource waste. However, compared with water cooling, this invention is more prone to insufficient gas cooling during the production process. Here, the inventor believes that there is still much room for improvement.

[0005] For example, patent KR1020140038609A relates to a cooling water manufacturing device, which includes a cooling water tank, and the cooling water tank includes multiple refrigerant supply and recovery heads for supplying and recovering refrigerants. The refrigerant supply and recovery head pipes are used to cool the evaporator unit stored in the water tank. A circulating cooling area is formed by attaching multiple refrigerant supply and recovery heads to each evaporator unit, thereby cooling the water in the evaporator unit. While realizing the circulation of cooling water, this patent avoids the problem of the circulating fan carrying out a large amount of water vapor. However, this patent requires the use of a large amount of refrigerant, and during the cooling process, water is prone to sedimentation and scale problems when it accumulates and drains at the outlet. Here, the inventor believes that there is still a lot of room for improvement. Summary of the Invention

[0006] In order to reduce equipment energy consumption, improve water cooling efficiency, and avoid the problem of scale or sediment caused by the attachment of debris to cooling water, the present invention provides a control mechanism for a centralized circulating cooling water system. The present invention relates to a control mechanism for a centralized circulating cooling water system, comprising a hot water tank, a cold water tank disposed on the side of the hot water tank, an interconnecting groove disposed at the connection between the cold water tank and the hot water tank, at least three bottom valves disposed in each of the hot water tank and the cold water tank, the bottom valves being connected to a cooling water tower via a circulating cooling water pipe, the output end of the cooling water tower being connected to a circulating cooling water pipe, one end of the circulating cooling water pipe being disposed in the cold water tank, the output end of the bottom valve in the cold water tank being connected to a heat exchanger mechanism via the circulating cooling water pipe, and the output end of the heat exchanger mechanism being output to the hot water tank via the circulating cooling water pipe.

[0007] Furthermore, the cooling water system's control mechanism can centrally supply dozens of water-consuming production lines. This circulating cooling water system is primarily suitable for workshops where production equipment previously had separate cooling towers and cooling water pumps. The hot and cold water pools are separated by a retaining wall with a reserved interconnecting channel in the upper portion. When the water level in either pool rises, the water overflows into the other.

[0008] Furthermore, the present invention sets the HMI of a cooling water tower controller to automatic mode. The controller of the cooling water valve group is linked with the controller of the cooling water tower. The cooling water valve group starts to pump water from the cold water pool. The corresponding solenoid valve on the water inlet pipe of the single water pump is closed. The controller of the cooling water valve group starts the last stopped water pump through the frequency converter according to the preset constant pressure parameter given frequency. If a water pump cannot meet the constant pressure, the next water pump is started until the pressure is stabilized. After running for a period of time, the water pump controller selects the water pump that meets the current flow value according to the preset flow range of each water pump. The cooling water tower and the cooling water valve group start and stop according to the water supply temperature, and automatically start when the water supply temperature is higher than the water supply temperature set by the cooling water tower controller.

[0009] In the present invention, the output end of the bottom valve in the hot water pool is connected to a circulating cooling water pipe, and a cooling water valve group is provided on the circulating cooling water pipe connected to the output end of the bottom valve in the hot water pool. The cooling water valve group includes a flange butterfly valve, the output end of the flange butterfly valve is connected to a Y-type filter, the output end of the Y-type filter is connected to a rubber flexible joint, one end of the rubber flexible joint is connected to a centrifugal water pump, the output end of the centrifugal water pump is connected to a check valve through the rubber flexible joint, and the output end of the check valve is connected to the flange butterfly valve.

[0010] Furthermore, the control mechanism is equipped with a water supply pipe, connected in parallel to at least three pipes connected to a bottom valve. The output end of the pipe is located at the input end of the cooling water valve group, and the pipe is equipped with an electric butterfly valve and two flange butterfly valves. Furthermore, the water supply pipe is connected in parallel to a water supply valve, which is located in the hot water tank and the cold water tank, respectively. This is intended to ensure that when water demand for production equipment decreases or stops, the water pressure sensor on the circulating cooling water pipe feeds a pressure signal to the PLC system. The PLC instructs the last pump to be activated to automatically reduce its frequency first. If the water pressure in the circulating cooling water pipe remains above the set pressure at the lowest frequency, the other pumps will automatically reduce their frequency in turn. If the lowest frequency remains above the set pressure, the last pump will automatically stop, and the others will gradually stop. The corresponding automatic water supply valve on the water inlet pipe of each pump opens, supplying tap water to the pump inlet pipe, preventing air from entering the water inlet pipe due to leaking bottom valves or pipes. At the same time, the water supply temperature sensor connected to the cooling tower controller detects that the workshop water supply temperature is lower than the set temperature value. After continuous operation, when the water supply temperature reaches the rated temperature, the cooling water valve group reduces the operating frequency or number of water pumps according to the operating conditions of constant pressure and reduced flow. The electric valves and cooling tower fans are shut down in the order of the last one started to stop first. If the temperature continues to drop, the electric valves and cooling tower fans continue to follow the above logic until all stop. When the water pump stops, the corresponding automatic water supply valve must open to replenish water to prevent air from entering.

[0011] In the present invention, the output end of the cooling water valve group is connected to a flange butterfly valve, the output end of the flange butterfly valve is connected to a flow meter, the output end of the flow meter is connected in parallel with at least six circulating cooling water pipes, the cooling water tower includes a water inlet, and the output end of the circulating cooling water pipe is connected to the water inlet.

[0012] In the present invention, a workshop water supply valve group is provided on the circulating cooling water pipe connected to the output end of the bottom valve in the cold water pool, the output end of the workshop water supply valve group is connected to a flange butterfly valve, the output end of the flange butterfly valve is connected to a flow meter, the output end of the flow meter is connected to a heat exchanger mechanism through a circulating cooling water pipe, the heat exchanger mechanism includes a medium frequency induction heating furnace and at least four water-using equipment heat exchangers, the medium frequency induction heating furnace and the water-using equipment heat exchanger are connected in parallel, and the medium frequency induction heating furnace and the water-using equipment heat exchanger supply water to the hot water pool.

[0013] Furthermore, when a small number of medium frequency induction heating furnaces are turned on and the water supply temperature does not exceed the starting temperature of a group of cooling water towers, the water supply returns to the hot water pool through the medium frequency induction heating furnaces. After a period of time, when the water level in the hot water pool is higher than the interconnecting tank, the water will overflow from the hot water pool to the cold water pool. The capacity of the cold water pool is large enough to achieve the effect of cooling to below the water supply temperature through the heat dissipation of the circulating water surface and the heat dissipation of the pool wall. At this time, the cooling water tower and the cooling water valve group do not need to be started.

[0014] If the medium frequency induction heating furnace is increased, in order to maintain the water supply pressure, the other water pumps in the workshop water supply valve group are put into operation in the order of power from small to large until the pressure is stabilized, and then the water pump that meets the current flow value is selected for priority operation; the circulating water temperature after the medium frequency induction heating furnace reaches the hot water pool. As the water consumption of the medium frequency induction heating furnace increases, the heat dissipation through the circulating water surface and the heat dissipation through the pool wall cannot meet the demand for cooling to the water supply temperature. The temperature sensor connected to the controller of the cooling water tower detects that the workshop water supply temperature exceeds the set temperature value, the cooling tower fan and the cooling tower water inlet electric butterfly valve are opened and operated, and the linked cooling water valve group starts immediately to draw water from the hot water pool. The corresponding solenoid valve on the water inlet pipe of the single water pump is closed, and the cooling water valve group supplies water to the cooling water tower. The cooling water tower water supply pump group also operates according to the same operating logic as the workshop water equipment water supply pump group until the workshop water supply temperature does not exceed the set value. After running for a period of time, the water supply temperature drops to the cooling tower fan shutdown temperature, the cooling water valve group stops running, the corresponding automatic water supply valve on the water inlet pipe of the single water pump opens, and tap water is supplied to the water pump inlet pipe to prevent air from entering the water inlet pipe due to leakage of the bottom valve or pipeline. The cooling tower water inlet electric butterfly valve and cooling tower fan stop running.

[0015] The cooling water tower in the present invention includes a water tower base, an annular frame is provided at the upper end of the water tower base, a fan assembly is installed on the annular frame, a fan motor is connected to the tail of the fan assembly, at least two water inlets are provided on the side of the fan assembly, an air outlet is provided on the side of the water tower base, and a water collection bin is provided at the bottom of the water tower base.

[0016] In the present invention, the water inlet and outlet are connected with a spray assembly, the spray assembly is arranged in the water tower base, a filler is arranged below the spray assembly, the filler is arranged corresponding to the air outlet, and a decontamination assembly is arranged in the water collection bin.

[0017] Furthermore, water enters the interior of the cooling tower through the water inlet, and the water to be cooled is sprayed onto the filler by means of a spray assembly. The filler is mainly composed of S-wave cooling tower fillers available on the market. The S-wave cooling tower filler has a large hydrophilic area, a good cooling effect, and a certain decontamination effect. The S-wave cooling tower filler structure is a circular multi-layer plate with filter holes, and the S-wave cooling tower filler is fixedly connected to the wall of the cooling tower. After being cooled by the filler, the water flows into the water collection bin and is discharged from the water collection bin. The decontamination assembly in the water collection bin works simultaneously to scrape off the scale and sediment at the bottom of the water collection bin. At the same time, a large amount of dry cold air is introduced into the air vents provided on the side of the filler to exchange heat with the water flow entering the cooling tower. At the same time, the air flow after the heat exchange is discharged from the fan assembly at the top.

[0018] In the present invention, the spray assembly includes a spray base, a groove is provided in the center of the spray base, a through hole is opened in the center of the groove, at least eight partition bases are arranged around the groove, and at least two spray holes are provided between every two partition bases.

[0019] Furthermore, water flows in from the water inlet on the outside, and the multiple pipes arranged in the water inlet correspond to the multiple spray components one by one. The water in the spray component rushes to the groove of the spray base in a countercurrent manner, and then the water flow is divided into multiple streams by the partition base, and the water flow is sprayed to the filler through the spray hole. The purpose of doing this is to slow down the flow rate of the water flow by countercurrent and separating the water flow by the partition base and then spraying it out, so as to increase the time the water flow stays in the cooling tower, improve the heat exchange efficiency of a single water supply, and also avoid the phenomenon of uneven heat dissipation caused by discharging a large amount of water at one time.

[0020] In the present invention, the upper end surface of the partition base away from the through hole is connected to a first spring, and one end of the first spring is connected to a cover plate.

[0021] Furthermore, by adding a cover plate and a first spring structure, it is possible to avoid the situation where a large amount of water is discharged at one time, in which case the cover plate is affected by the impact force of the water flow and drives the first spring to extend, prompting the water to be discharged from the side gap between the cover plate and the spray base, thereby avoiding the phenomenon that a large amount of water is accumulated in the first column, causing the pressure on the upper and lower sides of the sliding base to be consistent, resulting in the inability to drain the water out smoothly.

[0022] In the present invention, a first column is installed at the through hole, a hole is opened in the center of the first column, a sliding base is provided in the first column, a second spring is connected to the end of the sliding base, and a protrusion extending inward is provided on the inner wall of the first column, and the other end of the second spring is connected to the protrusion.

[0023] Furthermore, an annular groove is provided in the first column. Similarly, a circular hole is provided on the sliding base corresponding to the annular groove. The end of the sliding base is a trapezoidal structure, the purpose of which is to provide a larger force-bearing area so that the water flow can push the sliding base upward. When the water flow rushes into the first column, the sliding base is pushed upward by the water flow. When the end of the sliding base is pushed to the annular groove, the water flow can flow into the sliding base through the circular hole and then accumulate on the spray base. When the water supply is stopped, the sliding base is moved downward by the force of the water flow accumulated at the upper end. When the end of the sliding base is moved to the bottom of the annular groove, the water will not flow out downward, which can prevent the water in the spray assembly from flowing back and prevent the water from accumulating in the water inlet pipe and forming scale.

[0024] In the present invention, the dirt removal component includes two dirt removal substrates, and the sides of the dirt removal substrates are rotatably connected to rotating substrates. At least four rollers are connected to the rotating substrates, and brushes are wrapped around the outer sides of the rollers. A third spring is connected to one end of the roller away from the rotating substrate. A rotating handle is rotatably connected to the other side of the dirt removal substrate, and fixed blocks are symmetrically arranged on the upper and lower sides of the rotating handle.

[0025] Furthermore, the dirt removal component is mainly used to remove residual scale in the water collection bin. The rotating handle on its side is connected to the motor. The rotation of the motor drives the rotating base to rotate, and the roller is rotatably connected to the rotating base, so that the motor drives the rotating base to rotate while the roller rotates relatively, thereby prompting multiple rollers to rotate in different directions. On the one hand, it can ensure that the scale in the water collection bin can be scraped off by different rollers in different directions, which is cleaner. On the other hand, multiple rollers avoid rotating in the same direction for a long time when rotating, thereby reducing the effect of inertia force and avoiding large amounts of water splashing out when the dirt removal component is working. In addition, the purpose of providing a water baffle above the dirt removal component is also to avoid the phenomenon of large amounts of water splashing.

[0026] Furthermore, the rollers are connected by a third spring. Since the left and right rollers can rotate relative to the rotating base during rotation, adding a third spring can allow the left and right rollers to rotate in different directions to a certain extent, and then use the action of the third spring to make them turn in the same direction. Compared with the method of rigidly connecting the two rollers to rotate together, the third spring is provided to make its force-bearing surface area smaller. On the one hand, it can expand the effective area of ​​dirt removal without the need for additional new equipment. On the other hand, the rollers are elastically connected by the third spring. Since scraping scale on the surface of the water collection bin will generate friction, the action of the third spring prevents the connection between the left and right rollers from loosening.

[0027] Compared with the prior art, the beneficial effects of the present invention are: reducing the energy consumption of equipment use, utilizing an integrated water supply method and a large-tonnage water capacity to reduce cooling energy consumption; utilizing temperature, pressure, flow monitoring and other logic to control the variable frequency operation or shutdown of the cooling tower and the water supply pump group, thereby saving energy and reducing consumption; reducing procurement costs, and when the quantity is large, the overall procurement cost is lower than the cost of a single cooling water tower; the water tower, cold water pool and hot water pool of the centralized water supply pump group are outdoors, and indoor pipes are used to provide cooling water to the medium frequency induction heating furnace to avoid the generation of water vapor in the factory workshop, thereby improving the use environment and protecting the workshop inverter, reactor and other electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the control mechanism structure of a centralized circulating cooling water system involved in the present invention;

[0029] Figure 2 This is a schematic diagram of the enlarged structure of point B in the figure involved in the present invention;

[0030] Figure 3 This is a schematic diagram of the enlarged structure of point C in the figure involved in the present invention;

[0031] Figure 4 This is a schematic diagram of the cooling water tower structure involved in the present invention;

[0032] Figure 5 This is a schematic diagram of the top structure of the cooling water tower involved in the present invention;

[0033] Figure 6 for Figure 5 Schematic diagram of the cross-section structure at point A in the middle;

[0034] Figure 7 This is a schematic diagram of the cross-sectional structure of the cooling water tower involved in the present invention;

[0035] Figure 8 This is a schematic structural diagram of the spray assembly involved in the present invention;

[0036] Figure 9 This is a schematic structural diagram of the spray assembly involved in the present invention with the cover plate removed;

[0037] Figure 10 This is a schematic structural diagram of the spray assembly involved in the present invention from another perspective;

[0038] Figure 11 This is a schematic cross-sectional view of the spray assembly of the present invention when the water supply is stopped;

[0039] Figure 12 This is a schematic cross-sectional view of the spray assembly of the present invention in a water supply state;

[0040] Figure 13This is a schematic structural diagram of the decontamination component involved in the present invention.

[0041] Explanation of reference numerals: 11-hot water tank; 111-intercommunication groove; 12-cold water tank; 121-bottom valve; 13-cooling water valve group; 131-flange butterfly valve; 132-Y-type filter; 133-rubber flexible joint; 134-centrifugal water pump; 135-check valve; 136-electric butterfly valve; 14-circulating cooling water pipe; 15-flow meter; 161-water pressure sensor; 162-temperature sensor; 17-workshop water supply valve group; 2-cooling water tower; 21-water tower base; 211-fan assembly; 212-fan motor; 213-water inlet; 214-ring frame; 2 15-air inlet; 22-spray assembly; 221-cover plate; 222-first spring; 223-spray base; 224-first column; 225-partition base; 226-spray hole; 227-second spring; 228-sliding base; 23-filler; 24-decontamination assembly; 241-decontamination base plate; 242-handle; 243-fixed block; 244-roller; 245-brush; 246-third spring; 247-rotating base plate; 25-water baffle; 26-water collecting tank; 3-heat exchanger mechanism; 31-medium frequency induction heating furnace; 32-water-using equipment heat exchanger. DETAILED DESCRIPTION

[0042] Example 1:

[0043] Reference Attachment Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the present invention provides a control mechanism for a centralized circulating cooling water system. The present invention relates to a control mechanism for a centralized circulating cooling water system, comprising a hot water tank 11, a cold water tank 12 disposed on the side of the hot water tank 11, an interconnecting groove 111 disposed at the connection between the cold water tank 12 and the hot water tank 11, at least three bottom valves 121 disposed in each of the hot water tank 11 and the cold water tank 12, the bottom valves 121 being connected to a cooling water tower 2 via a circulating cooling water pipe 14, the output end of the cooling water tower 2 being connected to the circulating cooling water pipe 14, one end of the circulating cooling water pipe 14 being disposed in the cold water tank 12, the output end of the bottom valve 121 in the cold water tank 12 being connected to a heat exchanger mechanism 3 via the circulating cooling water pipe 14, the output end of the heat exchanger mechanism 3 being output to the hot water tank 11 via the circulating cooling water pipe 14.

[0044] Furthermore, the cooling water system's control mechanism can centrally supply dozens of water-consuming production lines. This circulating cooling water system is primarily suitable for use in workshops where production equipment previously had separate cooling towers and cooling water pumps. The hot water tank 11 and cold water tank 12 are separated by a retaining wall. A connecting groove 111 is reserved in the upper portion of the retaining wall. When the water level in either tank rises, the water overflows into the other.

[0045] Furthermore, the present invention sets the HMI of the cooling water tower 2 controller to automatic mode, and the controller of the cooling water valve group 13 is linked with the controller of the cooling water tower 2. The cooling water valve group 13 starts to pump water from the cold water pool 12, and the corresponding solenoid valve on the water inlet pipe of the single water pump is closed. The controller of the cooling water valve group 13 starts the last stopped water pump through the frequency converter according to the preset constant pressure parameter given frequency. If a water pump cannot meet the constant pressure, the next water pump is started until the pressure is stabilized. After running for a period of time, the water pump controller selects the water pump that meets the current flow value according to the preset flow range of each water pump. The cooling water tower 2 and the cooling water valve group 13 start and stop according to the water supply temperature, and automatically start when it is higher than the water supply temperature set by the controller of the cooling water tower 2.

[0046] In the present invention, the output end of the bottom valve 121 in the hot water pool 11 is connected to the circulating cooling water pipe 14, and the circulating cooling water pipe 14 connected to the output end of the bottom valve 121 in the hot water pool 11 is provided with a cooling water valve group 13, and the cooling water valve group 13 includes a flange butterfly valve 131, and the output end of the flange butterfly valve 131 is connected to a Y-type filter 132, and the output end of the Y-type filter 132 is connected to a rubber flexible joint 133, and one end of the rubber flexible joint 133 is connected to a centrifugal water pump 134, and the output end of the centrifugal water pump 134 is connected to a check valve 135 through the rubber flexible joint 133, and the output end of the check valve 135 is connected to the flange butterfly valve 131.

[0047] Furthermore, the control mechanism is equipped with a water supply pipe, connected in parallel to at least three pipes connected to a bottom valve 121. The output end of the pipe is located at the input end of the cooling water valve group 13. The pipe is also equipped with an electric butterfly valve 136 and two flanged butterfly valves 131. Furthermore, the water supply pipe is connected in parallel to water supply valves, which are respectively installed in the hot water tank 11 and the cold water tank 12. This is to ensure that when the water demand of the production equipment decreases or stops, the water pressure sensor 161 on the circulating cooling water pipe 14 will feedback the pressure signal to the PLC system. The PLC will then command the last pump to be put into operation to automatically reduce its frequency first. If the water pressure in the circulating cooling water pipe 14 is still higher than the set pressure at the lowest frequency, the other pumps will automatically reduce their frequency. If the lowest frequency is still higher than the set pressure of the frequency converter, the last pump will automatically stop, and the others will gradually stop. The corresponding automatic water replenishment valve on the water inlet pipe of the corresponding single water pump opens, and tap water is supplied to the water pump inlet pipe to prevent air from entering the water inlet pipe due to leakage from the bottom valve 121 or pipeline leakage. At the same time, the water supply temperature sensor 162 connected to the controller of the cooling water tower 2 detects that the workshop water supply temperature is lower than the set temperature value. When the water supply temperature reaches the rated temperature after continuous operation, the cooling water valve group 13 reduces the operating frequency or number of water pumps according to the operating conditions of constant pressure and reduced flow. The electric valves and cooling tower fans are shut down in the order of the last one started to stop first. If the temperature continues to drop, the electric valves and cooling tower fans continue to execute according to the above logic until all are stopped. When the water pump stops, the corresponding automatic water replenishment valves must open to replenish water to prevent air from entering.

[0048] In the present invention, the output end of the cooling water valve group 13 is connected to a flange butterfly valve 131, the output end of the flange butterfly valve 131 is connected to a flow meter 15, the output end of the flow meter 15 is connected in parallel with at least six circulating cooling water pipes 14, the cooling water tower 2 includes a water inlet, and the output end of the circulating cooling water pipe 14 is connected to the water inlet.

[0049] In the present invention, a workshop water supply valve group 17 is provided on the circulating cooling water pipe 14 connected to the output end of the bottom valve 121 in the cold water pool 12, and the output end of the workshop water supply valve group 17 is connected to the flange butterfly valve 131, and the output end of the flange butterfly valve 131 is connected to the flow meter 15. The output end of the flow meter 15 is connected to the heat exchanger mechanism 3 through the circulating cooling water pipe 14. The heat exchanger mechanism 3 includes a medium frequency induction heating furnace 31 and at least four water-using equipment heat exchangers 32. The medium frequency induction heating furnace 31 and the water-using equipment heat exchanger 32 are connected in parallel, and the medium frequency induction heating furnace 31 and the water-using equipment heat exchanger 32 supply water to the hot water pool 11.

[0050] Furthermore, when a small number of medium frequency induction heating furnaces 31 are turned on and the water supply temperature does not exceed the starting temperature of a group of cooling water towers 2, the water supply returns to the hot water pool 11 through the medium frequency induction heating furnaces 31. After a period of time, when the water level of the hot water pool 11 is higher than the interconnecting groove 111, the water will overflow from the hot water pool 11 to the cold water pool 12. The capacity of the cold water pool 12 is large enough, and the heat dissipation of the circulating water surface and the heat dissipation of the pool wall can achieve the effect of cooling to below the water supply temperature. At this time, the cooling water tower 2 and the cooling water valve group 13 do not need to be started.

[0051] If the medium frequency induction heating furnace 31 is increased, in order to maintain the water supply pressure, the other water pumps in the workshop water supply valve group 17 are put into operation in the order of power from small to large until the pressure is stabilized, and then the water pump that meets the current flow value is selected for priority operation; the circulating water temperature after the medium frequency induction heating furnace 31 reaches the hot water pool 11. As the water consumption of the medium frequency induction heating furnace 31 increases, the heat dissipation of the circulating water surface and the heat dissipation of the pool wall alone cannot meet the demand for cooling to the water supply temperature. The temperature sensor 162 connected to the controller of the cooling water tower 2 detects that the workshop water supply temperature exceeds the set temperature value, and the cooling tower fan and the cooling tower water inlet electric butterfly valve 136 are opened and operated. The linked cooling water valve group 13 starts immediately to draw water from the hot water pool 11, and the corresponding solenoid valve on the water inlet pipe of the single water pump is closed. The cooling water valve group 13 supplies water to the cooling water tower 2, and the cooling water tower water supply pump group 4 also operates according to the same operating logic of the workshop water equipment water supply pump group 5 until the workshop water supply temperature does not exceed the set value. After running for a period of time, the water supply temperature drops to the cooling tower fan shutdown temperature, the cooling water valve group 13 stops running, the corresponding automatic water supply valve on the water inlet pipe of the single water pump is opened, and tap water is supplied to the water pump inlet pipe to prevent air from entering the water inlet pipe due to leakage of the bottom valve 121 or pipeline leakage. The cooling tower water inlet electric butterfly valve 136 and the cooling tower fan stop running.

[0052] Example 2:

[0053] Reference Attachment Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the cooling water tower 2 in the present invention includes a water tower base 21, an annular frame 214 is provided at the upper end of the water tower base 21, a fan assembly 211 is installed on the annular frame 214, a fan motor 212 is connected to the tail of the fan assembly 211, at least two water inlets 213 are provided on the side of the fan assembly 211, an air outlet 215 is provided on the side of the water tower base 21, and a water collection bin 26 is provided at the bottom of the water tower base 21.

[0054] Reference Attachment Figure 4 , Figure 8 , Figure 9 , Figure 10 , Figure 11As shown, in the present invention, the outlet of the water inlet 213 is connected to a spray assembly 22, the spray assembly 22 is arranged in the water tower base 21, a filler 23 is arranged below the spray assembly 22, the filler 23 is arranged corresponding to the air outlet 215, and a decontamination assembly 24 is arranged in the water collection bin 26.

[0055] Reference Attachment Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 As shown, further, water enters the interior of the cooling tower 2 through the water inlet 213, and the water to be cooled is sprayed onto the filler 23 by the spray assembly 22. The filler 23 is mainly composed of S-wave cooling tower filler available on the market. The S-wave cooling tower filler has a large hydrophilic area, good cooling effect, and a certain decontamination effect. The S-wave cooling tower filler structure is a circular multi-layer plate with filter holes, and the S-wave cooling tower filler is fixedly connected to the wall of the cooling tower 2. After being cooled by the filler 23, the water flows into the water collection bin 26 and is discharged from the water collection bin 26. The decontamination assembly 24 in the water collection bin 26 works simultaneously to scrape off the scale and sediment at the bottom of the water collection bin 26. At the same time, a large amount of dry cold air is introduced into the air vents 215 provided on the side of the filler 23 to exchange heat with the water flowing into the cooling tower 2. At the same time, the air flow after heat exchange is discharged from the fan assembly 211 at the top.

[0056] In the present invention, the spray assembly 22 includes a spray base 223 , a groove is provided in the center of the spray base 223 , a through hole is opened in the center of the groove, at least eight partition bases 225 are arranged around the groove, and at least two spray holes 226 are provided between every two partition bases 225 .

[0057] Furthermore, water flows in from the outer water inlet 213, and the multiple pipes arranged in the water inlet 213 correspond one-to-one to the multiple spray components 22. The water in the spray component 22 rushes to the groove of the spray base 223 in a countercurrent manner, and then the water flow is separated into multiple streams by the partition base 225, and the water flow is sprayed to the filler 23 through the spray hole 226. The purpose of doing this is to slow down the flow rate of the water flow by countercurrent and separating the water flow by the partition base 225 and then spraying it out, so as to increase the time that the water flow stays in the cooling tower 2, improve the heat exchange efficiency of a single water supply, and also avoid the phenomenon of uneven heat dissipation caused by discharging a large amount of water at one time.

[0058] In the present invention, the upper end surface of the separation base 225 away from the through hole is connected to the first spring 222 , and one end of the first spring 222 is connected to the cover plate 221 .

[0059] Furthermore, by adding the cover plate 221 and the first spring 222, it is possible to avoid the situation where a large amount of water is discharged at one time, in which case the cover plate 221 is affected by the impact of the water flow and drives the first spring 222 to extend, prompting the water to be discharged from the side gap between the cover plate 221 and the spray base 223, thereby avoiding the phenomenon that a large amount of water is accumulated in the first column 224, causing the pressure on the upper and lower sides of the sliding base 228 to be consistent, resulting in the inability to drain the water out smoothly.

[0060] Reference Attachment Figure 11 As shown, in the present invention, a first column 224 is installed at the through hole, the center of the first column 224 is opened, a sliding base 228 is provided in the first column 224, the end of the sliding base 228 is connected to the second spring 227, and the inner wall surface of the first column 224 is provided with a protrusion extending inward, and the other end of the second spring 227 is connected to the protrusion.

[0061] Furthermore, an annular groove is provided in the first column 224. Similarly, a circular hole is provided in the sliding base 228 corresponding to the annular groove. The end of the sliding base 228 is a trapezoidal structure, the purpose of which is to provide a larger force-bearing area so that the water flow can push the sliding base 228 upward. When the water flow rushes into the first column 224, the sliding base 228 is pushed upward by the water flow. When the end of the sliding base 228 is pushed to the annular groove, the water flow can flow into the sliding base 228 through the circular hole and then accumulate on the spray base 223. When the water supply is stopped, the sliding base 228 is moved downward by the force of the water flow accumulated at the upper end. When the end of the sliding base 228 is moved below the annular groove, the water will not flow out downward, which can prevent the water in the spray assembly 22 from flowing back and prevent the accumulation of water in the water inlet pipe and the formation of scale.

[0062] Example 3:

[0063] Reference Attachment Figure 7 , Figure 13 As shown, in the present invention, the dirt removal component 24 includes two dirt removal substrates 241, and the sides of the dirt removal substrates 241 are rotatably connected to rotating substrates 247. At least four rollers 244 are connected to the rotating substrates 247. The outer side of the rollers 244 is wrapped with brushes 245. The end of the rollers 244 away from the rotating substrate 247 is connected to a third spring 246. The other side of the dirt removal substrate 241 is rotatably connected to a rotating handle 242, and fixed blocks 243 are symmetrically provided on the upper and lower sides of the rotating handle 242.

[0064] Furthermore, the dirt removal component 24 is mainly used to remove residual scale in the water collection bin 26. The rotating handle 242 on its side is connected to the motor. The rotation of the motor drives the rotating base plate 247 to rotate, and the roller 244 is rotatably connected to the rotating base plate 247, so that the motor drives the rotating base plate 247 to rotate while the roller 244 rotates relatively, thereby prompting multiple rollers 244 to rotate in different directions. On the one hand, it can ensure that the scale in the water collection bin 26 can be scraped off by different rollers 244 in different directions, which is cleaner. On the other hand, multiple rollers 244 avoid rotating in the same direction for a long time when rotating, thereby reducing the effect of inertia and avoiding a large amount of water splashing out when the dirt removal component 24 is working. In addition, the purpose of providing a water baffle 25 above the dirt removal component 24 is also to avoid the phenomenon of large amounts of water splashing.

[0065] Furthermore, the rollers 244 are connected by a third spring 246. Since the left and right rollers 244 can rotate relative to the rotating base plate 247 during rotation, the addition of the third spring 246 can allow the left and right rollers 244 to rotate in different directions to a certain extent, and then use the action of the third spring 246 to make them turn in the same direction. Compared with the method of rigidly connecting the two rollers 244 to rotate together, the third spring 246 is provided to make its force-bearing surface area smaller. On the one hand, it can expand the effective area of ​​dirt removal without the need for additional new equipment; on the other hand, the rollers 244 are elastically connected by the third spring 246. Since scraping off the scale on the surface of the water collection bin 26 will generate friction, the action of the third spring 246 prevents the connection between the left and right rollers 244 from loosening.

[0066] The principles of the present invention are illustrated herein using specific examples. The above embodiments are merely intended to facilitate understanding of the methods and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A control mechanism for a centralized circulating cooling water system, comprising a hot water pool (11), a cold water pool (12) provided on the side of the hot water pool (11), and an interconnecting groove (111) provided at the connection between the cold water pool (12) and the hot water pool (11), characterized in that: At least three bottom valves (121) are respectively provided in the hot water pool (11) and the cold water pool (12), and the bottom valves (121) are connected to the cooling water tower (2) through the circulating cooling water pipe (14). The output end of the bottom valve (121) in the cold water pool (12) is connected to the heat exchanger mechanism (3) through the circulating cooling water pipe (14), and the output end of the heat exchanger mechanism (3) is communicated with the hot water pool (11) through the circulating cooling water pipe (14); the cooling water tower (2) includes a water tower base (21), and a water collecting tank (26) is provided at the bottom of the water tower base (21); a decontamination component (24) is provided in the water collecting tank (26); The decontamination assembly (24) comprises two decontamination substrates (241), the decontamination substrate (241) is rotatably connected to a rotating substrate (247) on its side, the rotating substrate (247) is connected to a roller (244), and one end of the roller (244) away from the rotating substrate (247) is connected to a third spring (246); The outer side of the roller (244) is wrapped with a brush (245); the other side of the decontamination substrate (241) is rotatably connected to a rotating handle (242), and fixed blocks (243) are symmetrically provided on the upper and lower sides of the rotating handle (242); The output end of the bottom valve (121) in the hot water pool (11) is connected to a circulating cooling water pipe (14), and a cooling water valve group (13) is provided on the circulating cooling water pipe (14) connected to the output end of the bottom valve (121) in the hot water pool (11); An annular frame (214) is provided at the upper end of the water tower base (21), a fan assembly (211) is mounted on the annular frame (214), a fan motor (212) is connected to the rear end of the fan assembly (211), at least two water inlets (213) are provided on the side of the fan assembly (211), an air outlet (215) is provided on the side of the water tower base (21), and a water collection bin (26) is provided at the bottom of the water tower base (21).

2. A control mechanism for a centralized circulating cooling water system according to claim 1, characterized in that: The cooling water valve group (13) includes a flange butterfly valve (131), the output end of the flange butterfly valve (131) is connected to a Y-type filter (132), the output end of the Y-type filter (132) is connected to a rubber flexible joint (133), one end of the rubber flexible joint (133) is connected to a centrifugal water pump (134), the output end of the centrifugal water pump (134) is connected to a check valve (135) through the rubber flexible joint (133), and the output end of the check valve (135) is connected to the flange butterfly valve (131).

3. The control mechanism of a centralized circulating cooling water system according to claim 2, characterized in that: The output end of the cooling water valve group (13) is connected to a flow meter (15), and the output end of the flow meter (15) is connected in parallel to at least six circulating cooling water pipes (14). The cooling water tower (2) includes a water inlet (213), and the output end of the circulating cooling water pipe (14) connected to the cooling water valve group (13) is connected to the water inlet (213).

4. The control mechanism of a centralized circulating cooling water system according to claim 2, characterized in that: A workshop water supply valve group (17) is provided on the circulating cooling water pipe (14) connected to the output end of the bottom valve (121) in the cold water pool (12). The output end of the workshop water supply valve group (17) is connected to a flange butterfly valve (131). The output end of the flange butterfly valve (131) is connected to a flow meter (15). The output end of the flow meter (15) is connected to the heat exchanger mechanism (3) through the circulating cooling water pipe (14). The heat exchanger mechanism (3) includes a medium frequency induction heating furnace (31) and at least four water-using equipment heat exchangers (32). The medium frequency induction heating furnace (31) and the water-using equipment heat exchangers (32) are connected in parallel. The medium frequency induction heating furnace (31) and the water-using equipment heat exchangers (32) supply water to the hot water pool (11).

5. The control mechanism of a centralized circulating cooling water system according to claim 1, characterized in that: The outlet of the water inlet (213) is connected to a spray assembly (22), the spray assembly (22) is arranged in the water tower base (21), and a filler (23) is provided below the spray assembly (22), and the placement position of the filler (23) corresponds to the air outlet (215).

6. The control mechanism of a centralized circulating cooling water system according to claim 5, characterized in that: The spray assembly (22) comprises a spray base (223), a groove is provided at the center of the spray base (223), a through hole is opened at the center of the groove, at least eight partition bases (225) are arranged around the groove, and at least two spray holes (226) are provided between every two partition bases (225).

7. A control mechanism for a centralized circulating cooling water system according to claim 6, characterized in that: The upper end surface of the separation base (225) away from the through hole is connected to a first spring (222), and one end of the first spring (222) is connected to a cover plate (221).

8. The control mechanism of a centralized circulating cooling water system according to claim 6, characterized in that: A first column (224) is installed at the through hole, the first column (224) has a central opening, a sliding base (228) is provided in the first column (224), the end of the sliding base (228) is connected to a second spring (227), an inner wall surface of the first column (224) is provided with a protrusion extending inward, and the other end of the second spring (227) is connected to the protrusion.

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