A method and apparatus for regulating the temperature of water supply

Abstract

The application provides a water supply temperature adjusting method, comprising the following steps: setting a water supply duration and setting an activation time according to a water flow speed and a water flow distance; after activation, identifying a water temperature value when initial operation, operation or water supplementing; comparing the water temperature value with a preset temperature threshold value, and performing refrigeration or heating according to a comparison result; and opening and cutting off water supply according to the water supply duration to complete water supply. Through real-time detection of the water temperature and dynamic adjustment of the water temperature, the temperature is controllable and adjustable, so that the production process and quality stability of the product are optimal.

Description

Technical Field

[0001] This application relates to the field of temperature control, and more particularly to a method for regulating water supply temperature. This application also relates to a water supply temperature regulating device. Background Technology

[0002] The three essential elements of the casting / forging process are molten alloy, equipment (die casting machine / liquid forging machine), and mold. Each element is crucial in the production process. Mold temperature control is an indispensable auxiliary device in die casting / liquid forging production. The accuracy of mold temperature control is one of the core elements of the die casting / liquid forging process, directly affecting product quality and production efficiency.

[0003] The selection of temperature control methods for die casting / liquid forging dies is particularly important. The stability of the temperature field distribution established within the die, the resistance during cooling water supply, and temperature changes all affect the consistency of the die temperature, which has a significant impact on casting quality, production efficiency, and die lifespan. This directly relates to the cost and economic benefits of casting / liquid forging production. The temperature control accuracy and stability of dies have always been a technical challenge in the industry.

[0004] In existing technologies, mold temperature control mainly relies on direct pipeline cooling water, compressed air, or multi-point cooling. The main cooling method used is ambient temperature water circulation cooling. However, this method is difficult to control due to weather changes, resulting in low precision in mold cooling temperature control. During the cooling process, excessively high temperatures can cause defects such as product scratches and bubbles, prolonging cooling time and reducing production efficiency. Excessively low temperatures can cause defects such as cold shuts, incomplete filling, and porosity. Summary of the Invention

[0005] The purpose of this invention is to overcome the deficiencies in the prior art and provide a method for regulating water supply temperature. This application also relates to a water supply temperature regulating device.

[0006] This application provides a method for regulating water supply temperature, including:

[0007] Set the water supply duration and the start time based on the water flow rate and distance;

[0008] After startup, the water temperature value is identified during initial operation, operation, or when adding new water.

[0009] The water temperature value is compared with a preset temperature threshold, and cooling or heating is performed according to the comparison result.

[0010] The water supply is turned on and off according to the specified water supply duration to complete the water supply.

[0011] Optionally, the temperature threshold includes an upper temperature limit and a middle temperature limit;

[0012] When the water temperature reaches the upper temperature limit, multiple cooling devices are activated to lower the temperature.

[0013] When the water temperature reaches a preset distance from the midpoint of the temperature range, a preset number of refrigeration devices are shut down.

[0014] Optionally, heating may be activated when the water temperature is below the intermediate temperature limit.

[0015] Optionally, the water in the storage tank can be heated or cooled and then supplied to the water-requiring equipment through pipelines.

[0016] Optionally, after startup, the water in the pipeline flows back into the storage tank.

[0017] This application also provides a water supply temperature regulating device, including: a main control module, a liquid storage tank, a temperature control module and a flow control module;

[0018] The main control module is connected to the temperature control module and the flow control module. The main control module is located outside the liquid storage tank, the temperature control module is located inside the liquid storage tank, and the flow control module is located at the outlet of the liquid storage tank.

[0019] The main control module is used to set the water supply duration and the start time based on the water flow speed and water flow distance;

[0020] The temperature control module is used to identify the water temperature value after startup, during initial operation, operation, or when adding new water; compare the water temperature value with a preset temperature threshold, and perform cooling or heating according to the comparison result.

[0021] The flow control module is used to start and stop the water supply according to the water supply duration to complete the water supply.

[0022] Optionally, the temperature control module includes multiple refrigeration devices;

[0023] The temperature threshold includes an upper temperature limit and a middle temperature limit;

[0024] When the water temperature reaches the upper temperature limit, multiple cooling devices are activated to lower the temperature.

[0025] When the water temperature reaches a preset distance from the midpoint of the temperature range, a preset number of refrigeration devices are shut down.

[0026] Optionally, it also includes: a heating device that starts heating when the water temperature is lower than the intermediate temperature limit.

[0027] Optionally, the water in the storage tank can be heated or cooled and then supplied to water-requiring equipment through pipelines.

[0028] Optionally, after startup, the water in the pipeline flows back into the storage tank.

[0029] The advantages and beneficial effects of this application are as follows:

[0030] This application provides a method for regulating water supply temperature, comprising: setting a water supply duration and setting a start time based on water flow velocity and water flow distance; after start-up, identifying water temperature values ​​during initial operation, operation, or replenishment of new water; comparing the water temperature values ​​with a preset temperature threshold, and performing cooling or heating based on the comparison result; and turning the water supply on and off according to the water supply duration to complete the water supply. This application dynamically regulates the water temperature through real-time detection, making the temperature controllable and adjustable, thus optimizing the product's manufacturing process and quality stability. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the water supply temperature regulation process in this application.

[0032] Figure 2 This is a schematic diagram of the water supply temperature regulating device in this application.

[0033] Figure 3 This is a schematic diagram of the water supply temperature regulation process in this application.

[0034] Figure 4 This is a schematic diagram of the water supply temperature regulation process in this application. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention.

[0036] The following are examples of specific implementation processes provided to illustrate the technical solutions to be protected in this application. However, this application may also be implemented in other ways different from those described herein. Those skilled in the art can implement this application by different technical means under the guidance of the concept of this application. Therefore, this application is not limited to the specific embodiments below.

[0037] This application provides a method for regulating water supply temperature, comprising: setting a water supply duration and setting a start time based on water flow velocity and water flow distance; after start-up, identifying water temperature values ​​during initial operation, operation, or replenishment of new water; comparing the water temperature values ​​with a preset temperature threshold, and performing cooling or heating based on the comparison result; and turning the water supply on and off according to the water supply duration to complete the water supply. This application dynamically regulates the water temperature through real-time detection, making the temperature controllable and adjustable, thus optimizing the product's manufacturing process and quality stability.

[0038] Figure 1 This is a schematic diagram of the water supply temperature regulation process in this application.

[0039] Please refer to Figure 1 As shown, the water supply temperature regulation provided in this application includes the following steps:

[0040] S101 sets the water supply duration and the start time based on the water flow rate and distance.

[0041] After S102 starts, it identifies the water temperature value during initial operation, operation, or when adding new water.

[0042] S103 compares the water temperature value with a preset temperature threshold, and performs cooling or heating according to the comparison result;

[0043] S104 starts and stops the water supply according to the water supply duration to complete the water supply.

[0044] According to step S102, two temperature sensors are installed inside the storage tank to prevent inconsistent temperature differences caused by water stratification. The temperature sensors provide temperature values ​​to the PLC controller to control the temperature of the storage tank. The storage tank is also equipped with a level controller. When the storage tank is insufficiently replenished and the level falls below the minimum level, an audible and visual alarm signal is issued to indicate a water level fault.

[0045] According to step S103, the refrigeration unit operation control includes: setting a hysteresis value for the liquid storage tank temperature; when the actual temperature is greater than the set temperature + hysteresis value (i.e., the upper temperature limit), the refrigeration unit starts operating; when the temperature drops to the set temperature (i.e., the lower temperature limit), the refrigeration unit stops operating. When the actual temperature is less than the set temperature - hysteresis value (i.e., the lower temperature limit), the heater starts supplemental heating; when the temperature rises to the set temperature, the heater stops operating.

[0046] In this application, the startup sequence of the refrigeration system is as follows: chilled water pump -- cooling water solenoid valve -- start compressor -- (temperature reaches set point) -- stop compressor -- stop solenoid valve -- chilled water pump is only shut down after the entire unit is stopped.

[0047] The refrigeration unit is equipped with an electric regulating valve. When the refrigeration unit stops working, the cooling system water flow is shut off. When the refrigeration unit is working, the water valve opens in advance and adjusts the cooling water volume according to the compressor condensing pressure, connecting the water supply system and the cooling channel respectively.

[0048] A flow meter and solenoid valve system are installed before the diversion block. The function of the flow meter is to monitor the water flow rate entering the diversion block and upload the data to the computer controller for comparison with the set flow rate. If the actual flow rate deviates from the set flow rate at the pump outlet, an audible and visual alarm will be triggered, and the location of the fault will be displayed.

[0049] The alarm function requires the PLC system to issue audible and visual alarm signals when any part of the system malfunctions (temperature, pressure, flow rate, equipment overload, liquid tank level, etc.), and simultaneously display the fault location prominently on the touch screen. The fault information is also uploaded to the main control module via the native communication protocol.

[0050] In addition to adhering to the specifications and standards of control modules, this application selects the control module mode and specific related equipment in accordance with the functions of control modules and the basic principles of automatic control systems. It comprehensively considers various aspects such as system safety and reliability, technological advancement, feasibility of engineering implementation, ease of maintenance, and practicality of rapid fault diagnosis, and provides a control module solution with the best cost performance.

[0051] Specifically, since the water pump only starts a few seconds before water is needed (as can be seen from the calculation of water flow rate, if high-precision cooling water is required, the start-up time should not be less than 7 seconds), it can avoid the energy waste of the water pump running for a long time and also ensure the water supply demand.

[0052] Specifically, assuming a cooling and heating module is needed to ensure the outlet water temperature is controlled at 12℃, with a temperature control accuracy of ±1℃, then:

[0053] Refrigeration Operation: The 4000L liquid storage tank initially holds water at 33℃. The microcomputer control module identifies the preset temperature and activates all compressors to cool the tank when the water temperature reaches the upper limit. As the temperature approaches the middle limit, some compressors stop operating to ensure accurate temperature control until the set temperature is reached. After adding new water, a temperature difference is created. When this difference exceeds the upper limit, the compressors restart. Cooling Capacity Calculation: The refrigeration unit uses water cooling and environmentally friendly refrigerant R410A (based on a condensing temperature of 40℃ and a minimum outlet water temperature of 9℃).

[0054] The initial water volume is 4000L, and the water temperature is 33℃. If the water temperature is lowered to 12℃, the Δ = 21℃. Using 4 compressors, the total cooling capacity is 38.4 × 4 = 153.6KW, and the total input power is 7.88 × 4 = 31.52KW. When the cooling capacity meets the requirements and the liquid storage tank is operating normally, the water replenishment rate is 895L / h, and the replenishment temperature is calculated at 33℃. To reach the minimum set water temperature of 12℃, the Δ = 21℃, requiring a cooling power of 12.5kw. Therefore, a cooling capacity of 15kW is required.

[0055] Heating operation: The microcomputer system identifies the preset water temperature. If the temperature of the liquid storage tank is lower than a certain set temperature, the heating device will be turned on to raise the temperature. When the temperature approaches the set value, one or two sets of heaters will stop working until the set temperature is reached.

[0056] The initial water volume is 4000L, and the water temperature is 3℃. If the water temperature is to be heated to 12℃, Δ = 9℃, the required heating power is 12.5kW; a 15kW heater is provided as a backup.

[0057] When the liquid storage tank is working normally, the water replenishment volume is 895L / h, the water replenishment temperature is 3℃, and the set water temperature of 12℃ is reached. Δ=9℃. The flow rate of the mold cooling return water is 15m / s, and the temperature is controlled at 20℃ to complement the low temperature of the water replenishment, thus meeting the set water temperature of 12℃.

[0058] Internal circulation: To ensure a consistent temperature inside the storage tank and avoid temperature differences, the tank is equipped with a circulation pump that acts as a stirrer. Continuous circulation by the pump ensures a uniform temperature within the tank. Water is supplied to the tank by the client at the inlet, and the water level is controlled by a float valve.

[0059] Water supply circulation: The current casting machine requires 14 water supply lines. According to the equipment operation requirements, the start-up time, working time, flow rate and pressure of each water pump are uniformly distributed and need to be controlled one by one.

[0060] In step S101, the response time of the equipment cooling water when it needs to operate should be controlled within 1 second. However, in actual operation, after receiving the operating command, the water supply system needs to complete steps such as pump start-up, water flow detection, feedback to the controller, comparison with the set value, and frequency converter flow adjustment. This response time exceeds 1 second. Furthermore, the water pipe between the water supply equipment and the distribution block is approximately 10 meters long. During the two stages of the die-casting equipment operation, the water system is not working, and the water inside changes due to environmental factors, causing the water temperature to fail to meet the equipment's requirements. Based on a flow velocity of 6.7 meters per second in the pipe, it takes approximately 1.5 seconds for the water in the storage tank to reach the required temperature, preventing the equipment from meeting the temperature requirements. Therefore, this application also sets up the following control method:

[0061] The liquid forging machine provides a signal indicating the need for cooling water. The operating panel sets the cooling water start time and duration. The system backend calculates the water pump start time based on the start time. After meeting the predetermined flow requirement, the return water solenoid valve is closed at the preset cooling water start time, and the cooling water supply to the mold meets the preset requirements. When the cooling water reaches the duration, the cooling water supply stops, and the cooling supply for this cycle is completed, waiting for the start command of the next cycle.

[0062] After the cooling water pump starts, the flow meter measures the water flow rate and compares it with the preset flow rate. The result is then fed back to the computer control module, which adjusts the pump speed to ensure that the actual flow rate equals the preset flow rate. Since water flow rate can only be measured when water is flowing, the cooling water must circulate. Therefore, the system is designed to control the water flow by installing return water solenoid valves and supply water solenoid valves.

[0063] Specifically, after the water pump starts, the water supply solenoid valve closes and the return solenoid valve opens. The water flows back to the storage tank after being regulated by the pressure limiting valve. Here, the pressure limiting valve simulates the resistance of the cooling channel, ensuring that the flow rate and pressure of the cooling water remain stable during operation. At this point, the water supply volume and pressure meet the requirements of the water supply parameters. When cooling water is needed, simply open the cooling water supply solenoid valve and close the return solenoid valve, and the cooling water can be supplied to the hydraulic press according to the preset parameters in a very short time.

[0064] This application also provides a water supply temperature regulating device, including: a main control module, a liquid storage tank, a temperature control module, and a flow control module; the main control module is connected to the temperature control module and the flow control module, the main control module is disposed outside the liquid storage tank, the temperature control module is disposed inside the liquid storage tank, and the flow control module is disposed at the outlet of the liquid storage tank;

[0065] The main control module is used to set the water supply duration and the start time based on the water flow speed and water flow distance;

[0066] The temperature control module is used to identify the water temperature value after startup, during initial operation, operation, or when adding new water; compare the water temperature value with a preset temperature threshold, and perform cooling or heating according to the comparison result.

[0067] The flow control module is used to start and stop the water supply according to the water supply duration to complete the water supply.

[0068] Figure 2 This is a schematic diagram of the water supply temperature regulating device in this application.

[0069] Please refer to Figure 2 As shown, Figure 2 The winning bid numbers are as follows: Equipment maintenance door 101, liquid storage tank 102, water level measurement and control valve 103, circulating water circuit 104, flow meter 105, flow controller 106, microelectronic quantitative pump 107, cooling water pressure controller 108, thermostatic circulator 109, refrigeration evaporator 110, thermostatic condenser 111, thermostatic control cabinet 112, whole machine control cabinet 113, whole machine control touch screen 114, diversion control cabinet 115 and diversion control touch screen 116.

[0070] The water pipeline setup is as follows: The water flow rate is calculated at 2500 L / h, with a maximum pipe length of 15 meters. Based on the recommended pipe diameter table, the optimal diameter is DN32. Here, De33 stainless steel pipe with an inner diameter of 25 mm is selected. At a flow rate of 2500 L / h, the flow velocity within the pipe is 6.7 m / s, and the total water pipe resistance loss is 3.35 meters. However, due to the relatively short pipeline length, the water loss is only 4.4%, and the pump operation time is relatively short, making this pipe diameter acceptable.

[0071] The liquid storage tank is configured as follows: It stores and manufactures cooling water, and the tank body is made of 316 stainless steel. Its external dimensions are 1500mm × 1500mm × 2000mm, with a volume of 4.5m³. 3 The actual water storage capacity is 4000L, with a volume utilization rate of 89%. The storage tank is equipped with an automatic water replenishment valve (float type), a glass tube water level display, a tilting level controller, two water temperature monitoring probes, two water pump outlets, two water inlets, two water distributor outlets, two return water inlets, and three sets of electric heaters (located at the bottom of the storage tank). It also includes one overflow outlet, one drain outlet, and an inspection ladder. The storage tank has a fully enclosed structure with an inspection port on the top, and the exterior is insulated.

[0072] Refrigeration equipment, such as multiple cooling pumps, is configured as follows: Grundfos CM5 series multistage circulation pumps with a rated output of 6m³ / h. 3 / h, rated outlet head 55 meters. Maximum outlet pressure 68 meters, input power 1580W, pump inlet diameter DN32, outlet size DN25.

[0073] Figure 3 This is a schematic diagram of the water supply temperature regulation process in this application.

[0074] Please refer to Figure 3 As shown, Figure 3 The following components are listed: return water filter 201, return water heat exchanger 202, return water pipe 203, water supply pipe 204, water tank 205, cooling water circuit 206, chilled water circulation pump 207, drain pipe 208, water pump 209, mold 210, solenoid valve 211, flow meter 212, flow meter 213, solenoid valve 214, and flow regulating valve 215.

[0075] The flow control module includes the following variable frequency flow pumps: 14 pumps installed and an additional 14 pumps reserved for expansion are independently controlled. Controlled parameters include flow rate, pressure, and temperature, as well as control of the return water solenoid valve and the supply water solenoid valve. It can display the water supply flow rate, supply pressure, and supply temperature of each branch pump (and, if necessary, the mold outlet water temperature), and the flow rate before the diverter block.

[0076] The flow control module also includes a flow monitoring system: the pure water turbine flow meter is a new type of instrument that can measure the flow rate of gases, liquids, etc. The working principle of the turbine flow meter is as follows: Fluid flows through the sensor housing. Due to the angle between the impeller blades and the flow direction, the force of the fluid causes the blades to have a rotational torque. After overcoming frictional torque and fluid resistance, the blades rotate. After the torque balances, the rotational speed stabilizes. Under certain conditions, the rotational speed is proportional to the flow velocity. Because the blades are magnetic, they are in the magnetic field of the signal detector (composed of a magnet and a coil). The rotating blades cut the magnetic lines of force, periodically changing the magnetic flux of the coil, thereby inducing an electrical pulse signal at both ends of the coil. This signal is amplified and shaped by an amplifier to form a continuous rectangular pulse wave of a certain amplitude, which can be transmitted to a display instrument to show the instantaneous flow rate and cumulative flow of the fluid.

[0077] The temperature control module also includes a water temperature sensing wire: the PT100 resistance temperature detector (RTD) measures temperature by utilizing the characteristic that the resistance of a substance changes with temperature. When the resistance changes, the instrument displays the corresponding temperature value. The Pt100 RTD features good vibration resistance, high temperature measurement accuracy, high mechanical strength, good pressure resistance, and reliable and stable performance.

[0078] Figure 4 This is a schematic diagram of the water supply temperature regulation process in this application.

[0079] Please refer to Figure 4 As shown, Figure 4 The following are the designations: regulating valve 301, flow meter valve 302, solenoid valve 303, and compressed air 304.

[0080] Compressed air flow control; a total of 8 compressed air supply lines, with a single line supply capacity of 40m³. 3 / h, inlet pressure 0.55MPa. Compressed air flow rate is monitored by a flow meter and adjusted by an electric valve. Selected materials and equipment are guaranteed to be explosion-free during use. Pressure rating 1.6MPa is selected.

[0081] Gas flow meter: detects the flow rate of compressed air delivered to the mold, and transmits the data to the proportional control valve after setting the set value.

[0082] The flow control module also includes: compressed air system piping, compressed air piping working pressure 55 bar, setting margin 300%, selection of pipe diameter and wall thickness, and pipe flow velocity selection: the flow velocity is selected based on an average flow velocity of 15 m / s, and the pipe inner diameter is calculated to be 15.36 mm based on the flow rate.

[0083] The control module includes a SIEMENS 1500 series PLC, featuring control of each branch water pump, flow monitoring, pressure monitoring, temperature display, liquid storage tank temperature display, liquid storage tank water level monitoring, and compressed air branch control functions. Cooling water temperature and flow rate can be adjusted, set, and saved on the main industrial computer, with operational data saving and memory functions. The communication system uses Ethernet communication. The host computer system configuration includes: a host computer for industrial configuration using WinCC or KingSCADA software; a printer for printing and archiving system operating data; an alarm speaker that sounds an alarm when a system fault occurs; and an Ethernet switch for data exchange between the host computer and the PLC.

[0084] Control module configuration: All PLCs are Siemens S7-1500SMART series. The PLCs enable effective system control. Each PLC can implement 8-channel PID control, providing more precise system control. Data exchange between PLCs occurs via Ethernet. Data exchange with external devices, including alarm information transmission, is also achieved through the Profinet communication protocol.

[0085] The PLC system control box uses either a Siemens TP1500 series touchscreen or a BKO GL100E series touchscreen, selected based on the number of PLCs on site. Water pump control uses ABB ACS510 series frequency converters. A separate frequency converter control cabinet is configured, and all frequency converters use analog control of the output frequency and can perform PID adjustment, achieving perfect control of the water pumps. The PLC controller inputs and stores user programs, displays input content and addresses, checks and verifies the user program, and alarms upon detecting errors. It executes the user program, driving external output devices. It receives and recalls field information, diagnoses and remembers faults, and issues alarms.

[0086] The apparatus described in this application further includes:

[0087] Touch screen: Displays and allows querying of various data collected by the PLC for the entire system, and allows setting the required parameter values ​​through the setting interface;

[0088] Inverter: Receives signals from the water flow meter to control the speed of the variable frequency flow pump;

[0089] Isolation transformer: Converts the 380V power supply of the main circuit into a single-phase 220V power supply for the control circuit;

[0090] Electric heating element: Heating is achieved using an electric heating element, which features a simple structure, rapid start-up and shutdown, high efficiency, easy control, and no moving parts. The electric heating element is directly installed inside the liquid storage tank, reducing heat loss during transport. As the core component of the heating system, in winter, when the cooling water temperature is too low, the PLC system sends a signal to the electric heating element, which then starts working and drives the entire heating system to increase the cooling water temperature.

[0091] Compressor: The refrigeration compressor is a scroll compressor, which has the characteristics of low operating noise, light weight, few moving parts, long service life, strong resistance to liquid slugging and easy procurement.

[0092] Scroll compressors have short shutdown times and can be restarted quickly after shutdown. The chiller unit has multiple protection functions: high-pressure protection, low-pressure protection, power phase sequence protection (to prevent compressor reverse rotation), undervoltage protection, overcurrent protection, compressor coil overheat protection, insufficient water flow protection, and low outlet water temperature protection.

[0093] The axially flexible scroll can maintain a constant and uniform pressure at the scroll tip to eliminate leakage.

[0094] The radially flexible scroll design ensures scroll contact while allowing scrolls to separate to one side, thus allowing small impurities and small amounts of liquid to pass through without damaging the scrolls, significantly improving compressor lifespan.

[0095] The compressor has a built-in pressure relief valve that opens when the pressure difference reaches 26.4-31.6 kg / cm² to prevent mechanical damage. The thermal disc TOD (High Exhaust Temperature Protection) activates when the exhaust temperature reaches 143°C to prevent excessively high exhaust temperatures.

[0096] The floating sealing device allows the scroll plate to disengage when the compression ratio exceeds 10:1, allowing some of the high-pressure gas to flow back to the low-pressure end, thus preventing overload of the mechanical equipment. A built-in protection circuit protects the motor from damage when the motor temperature or current is too high.

[0097] Electrical Control: The control module adopts the SIEMENS 1500 series PLC control module, and the touch screen is also a 1500 series touch screen. The control module adopts PLC control to meet the unified requirements of the automatic control settings, and completes data acquisition, comprehensive fault alarm, automatic adjustment and control, and data management (including data reading, writing, querying, etc.) for the system and related equipment. This facilitates parameter setting, data querying, and downloading for operators, ensuring that process production requirements are met. It must also meet the client's MES system access and data exchange functions.

[0098] Temperature control range: 12℃; Water treatment capacity: 4000L / H;

[0099] Cooling water flow control per channel: 1500L / H-2500L / H; a total of 14 channels, with 14 more channels reserved for future use;

[0100] The water supply pressure range is 0.5 MPa. To ensure the absolute safety of the pipeline, the water system has a pressure resistance safety margin of 300%. That is, the setting and test pressure shall not be lower than 1.6 MPa.

[0101] Choose a flow meter appropriately to ensure it will not burst during use within the warranty period;

[0102] The compressed air system has 8 branches, each operating completely independently, with a branch flow rate ≥40m³ / h. 3 / h.

[0103] The cooling water temperature and flow rate can be adjusted and set on the main industrial computer;

[0104] The three-color audible and visual alarm light of the main unit's electrical control box will issue a fault alarm when the temperature, flow rate, and pressure are abnormal.

Claims

1. A method for regulating water supply temperature, characterized in that, include: Set the water supply duration and the start time based on the water flow rate and distance; After the water supply system starts according to the aforementioned start-up time, it identifies the water temperature value during initial operation, operation, or when adding new water. The water temperature value is compared with a preset temperature threshold, and cooling or heating is performed according to the comparison result. The water supply is turned on and off according to the specified water supply duration to complete the water supply; Specifically, the water pump start time is calculated by working backward from the preset cooling water start time. The water pump starts in advance according to the preset start time. After the water pump starts, the water supply solenoid valve is closed and the return water solenoid valve is opened. The water flows back to the storage tank after being regulated by the pressure limiting valve. The pressure limiting valve simulates the resistance of the cooling channel to keep the flow rate and water pressure of the cooling water stable. At the preset cooling water start time, the water supply solenoid valve is opened and the return water solenoid valve is closed, so that the cooling water is supplied according to the preset parameters in a very short time.

2. The water supply temperature regulation method according to claim 1, characterized in that, The temperature threshold includes setting temperature + hysteresis value, setting temperature, and setting temperature - hysteresis value; When the water temperature reaches the set temperature plus the hysteresis value, multiple cooling devices are activated to cool the water. When the water temperature reaches a preset distance from the set temperature, a preset number of refrigeration devices are turned off.

3. The water supply temperature regulation method according to claim 2, characterized in that, When the water temperature is lower than the set temperature minus the hysteresis value, heating is activated, including: heater reheating operation; The heater stops operating when the temperature reaches the set temperature.

4. The water supply temperature regulation method according to any one of claims 1 to 3, characterized in that, The water in the storage tank is heated or cooled and then supplied to the water-requiring equipment through pipelines.

5. The water supply temperature regulation method according to claim 4, characterized in that, After the water pump is started, the water in the pipeline flows back to the storage tank.

6. A water supply temperature regulating device, characterized in that, include: The main control module, liquid storage tank, temperature control module, and flow control module; The main control module is connected to the temperature control module and the flow control module. The main control module is located outside the liquid storage tank, the temperature control module is located inside the liquid storage tank, and the flow control module is located at the outlet of the liquid storage tank. The main control module is used to set the water supply duration and the start time based on the water flow speed and water flow distance; The temperature control module is used to identify the water temperature value after the water supply system starts according to the start time, during initial operation, operation, or when adding new water; and to compare the water temperature value with a preset temperature threshold, and to perform cooling or heating according to the comparison result. The flow control module is used to start and stop the water supply according to the water supply duration to complete the water supply. Specifically, the water pump start time is calculated by working backward from the preset cooling water start time. The water pump starts in advance according to the preset start time. After the water pump starts, the water supply solenoid valve is closed and the return water solenoid valve is opened. The water flows back to the storage tank after being regulated by the pressure limiting valve. The pressure limiting valve simulates the resistance of the cooling channel to keep the flow rate and water pressure of the cooling water stable. At the preset cooling water start time, the water supply solenoid valve is opened and the return water solenoid valve is closed, so that the cooling water is supplied according to the preset parameters in a very short time.

7. The water supply temperature regulating device according to claim 6, characterized in that, The temperature control module includes multiple refrigeration devices; The temperature threshold includes the set temperature + hysteresis value and the set temperature; When the water temperature reaches the set temperature plus the hysteresis value, multiple cooling devices are activated to cool the water. When the water temperature reaches a preset distance from the set temperature, a preset number of refrigeration devices are turned off.

8. The water supply temperature regulating device according to claim 7, characterized in that, Also includes: The heating equipment starts heating when the water temperature is lower than the set temperature minus the hysteresis value, including: heater reheating operation; The heater stops operating when the temperature reaches the set temperature.

9. The water supply temperature regulating device according to any one of claims 6 to 8, characterized in that, The water in the storage tank is heated or cooled and then supplied to the water-requiring equipment through pipelines.

10. The water supply temperature regulating device according to claim 9, characterized in that, After the water pump is started, the water in the pipeline flows back to the storage tank.

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