Sizing high-pressure water descaling newly-added water valve energy-saving system and method

Abstract

The sizing high-pressure water descaling newly-added water valve energy saving system comprises a pneumatic water valve, a PLC and a communication cable, the pneumatic water valve is installed at a water inlet pipe of a sizing high-pressure water descaling water storage tank and used for controlling the water inlet amount of the sizing high-pressure water descaling water storage tank, the pneumatic water valve is connected with the PLC through the communication cable, and the communication cable is used for transmitting signals. The PLC is used for controlling the pneumatic water valve. Through linkage of the liquid level sensor of the sizing high-pressure water dephosphorization water storage tank and the pneumatic water valve of the water inlet pipe, the control function of automatic water feeding and water stopping of the sizing high-pressure water dephosphorization water storage tank can be achieved, waste of water energy is reduced during shutdown, meanwhile, the overflow water tank is additionally arranged, overflow water is stored, and the service life of the sizing high-pressure water dephosphorization water storage tank is prolonged. The water is supplemented when the sizing high-pressure water dephosphorization water storage tank lacks water, so that the water resource is reused, the waste of the water resource is further reduced, and the cost is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe processing and manufacturing, and in particular to an energy-saving system and method for a fixed-sizing high-pressure water descaling and new water valve. Background Art

[0002] Steel is oxidized at high temperatures, forming a dense layer of iron oxide scale (phosphorus scale) on its surface. If this layer of iron oxide scale cannot be removed before rolling, it will be pressed into the surface of the strip by the rollers during the rolling process, affecting its surface quality. The residual iron oxide scale will also accelerate the wear of the rollers and reduce the service life of the rollers. If the strip needs to be pickled, the residual iron oxide scale will increase the difficulty of pickling and increase acid consumption. Therefore, before rolling the billet, the surface iron oxide scale must be removed. The method of using the mechanical impact force of high-pressure water to remove the iron oxide scale (high-pressure water dephosphorization) is the most common and effective method.

[0003] In the dephosphorization system, high-pressure water generated by the high-pressure water pump enters the dephosphorization nozzle. Under the action of the nozzle, the high-pressure water forms a fan-shaped water jet with great impact force and sprays onto the surface of the billet (or intermediate billet). Under the action of this high-pressure fan-shaped water jet, the iron oxide scale undergoes a process of being cut, rapidly cooled and shrunk, peeled off from the base material, and washed away from the surface of the billet (or intermediate billet), thereby removing the iron oxide scale.

[0004] When high-pressure water is hit on the surface of the billet through the nozzle, the following changes will occur:

[0005] a. The fan-shaped surface formed by the water flow is like a sharp blade, cutting the dense iron sheet and forming cracks. It can be seen that the thin fan surface has a greater striking force;

[0006] b. High-pressure water penetrates through the cracks and encounters the high-temperature parent material, which rapidly vaporizes and evaporates, creating an explosion-like effect, peeling off the iron oxide scale and the parent material;

[0007] c. After being impacted by water, the iron oxide scale contracts when cooled, generating a lateral shear force that separates the iron oxide scale from the base material.

[0008] d. The flushing effect of the water jet with a forward tilt angle will flush away the loose iron sheet.

[0009] The water introduced from outside is clean circulating water, and the water quality meets the water requirements of the dephosphorization pump (the inlet water pressure is 0.25-0.30MPa). The water introduced from outside enters the high-level water tank, and then enters the high-pressure water pipeline system after being pressurized by the high-pressure dephosphorization pump. Due to the different materials and dephosphorization degrees of the steel billets, the amount of water and pressure required for dephosphorization of the steel billets are also different. In order to ensure the dephosphorization effect of the steel billets, the frequency converter is used to adjust the dephosphorization water volume and pressure.

[0010] At present, the fixed-size high-pressure water dephosphorization water tank has an inlet pipe and an overflow pipe. The inlet pipe supplies water to the water tank. When the water level in the water tank reaches the water level in the overflow pipe, it overflows automatically to prevent the water tank from overflowing. Since the inlet pipe is a direct-connected pipe, it only has a manual shut-off valve and no automatic water valve control. In order to ensure that there is water in the water tank and the water is not stopped when the tool is stopped, water can only be taken in and overflowed at the same time, resulting in a waste of water energy and an increase in production costs. Summary of the invention

[0011] The purpose of the present invention is to overcome the shortcomings of the prior art and propose a new water valve energy-saving system and method for sizing high-pressure water descaling, which can realize the control function of automatic water inlet and water stop of the sizing high-pressure water dephosphorization water storage tank, thereby reducing the waste of water energy when shutting down.

[0012] The present invention solves the technical problem by adopting the following technical solutions:

[0013] The newly added water valve energy-saving system of the sizing high-pressure water descaling includes a pneumatic water valve, a PLC and a communication cable, wherein the pneumatic water valve is installed at the water inlet pipe of the sizing high-pressure water dephosphorization water storage tank to control the water inlet volume of the sizing high-pressure water dephosphorization water storage tank. The pneumatic water valve is connected to the PLC via a communication cable. The communication cable is used to transmit signals, and the PLC is used to control the pneumatic water valve.

[0014] Furthermore, an overflow water tank is also included, the input end of which is connected to the overflow pipe and is used to collect water overflowing from the overflow pipe.

[0015] Moreover, the pneumatic water valve includes an inlet pipe pneumatic water valve and an overflow tank pneumatic water valve, wherein the inlet pipe pneumatic water valve is installed at the water inlet pipe of the sizing high-pressure water dephosphorization water storage tank, and is used to control the water inlet amount of the sizing high-pressure water dephosphorization water storage tank, and the overflow tank pneumatic water valve is installed at the output end of the overflow water tank, and is used to input the water in the overflow water tank into the sizing high-pressure water dephosphorization water storage tank.

[0016] Moreover, it also includes a liquid level sensor, wherein the liquid level sensor includes a sizing high-pressure water dephosphorization water storage tank liquid level sensor and an overflow water tank liquid level sensor. The sizing high-pressure water dephosphorization water storage tank liquid level sensor is installed inside the sizing high-pressure water dephosphorization water storage tank, and is used to detect the liquid level of the sizing high-pressure water dephosphorization water storage tank. The overflow water tank liquid level sensor is installed inside the overflow water tank, and is used to detect the liquid level of the overflow water tank.

[0017] Moreover, the sizing high-pressure water dephosphorization water tank liquid level sensor includes an upper sizing high-pressure water dephosphorization water tank liquid level sensor, a middle sizing high-pressure water dephosphorization water tank liquid level sensor and a lower sizing high-pressure water dephosphorization water tank liquid level sensor, wherein the upper sizing high-pressure water dephosphorization water tank liquid level sensor is installed on the upper part of the inner wall of the sizing high-pressure water dephosphorization water tank, the middle sizing high-pressure water dephosphorization water tank liquid level sensor is installed in the middle part of the inner wall of the sizing high-pressure water dephosphorization water tank, and the lower sizing high-pressure water dephosphorization water tank liquid level sensor is installed at the bottom of the inner wall of the sizing high-pressure water dephosphorization water tank. The upper sizing high-pressure water dephosphorization water tank liquid level sensor is used to detect whether the water in the sizing high-pressure water dephosphorization water tank is full, the middle sizing high-pressure water dephosphorization water tank liquid level sensor is used to detect whether the sizing high-pressure water dephosphorization water tank needs to be increased, and the lower sizing high-pressure water dephosphorization water tank liquid level sensor is used to detect whether there is water in the sizing high-pressure water dephosphorization water tank.

[0018] An energy-saving method for a sizing high-pressure water descaling and water-adding valve energy-saving system comprises the following steps:

[0019] Step 1, setting the opening of the pneumatic water valve of the water inlet pipe, and detecting the liquid level state in the sizing high-pressure water dephosphorization water storage tank through the sizing high-pressure water dephosphorization water storage tank liquid level sensor;

[0020] Step 2: The liquid level sensor of the sizing high-pressure water dephosphorization water tank transmits the detected data to the PLC through the communication cable. The PLC determines the control mode. If it is automatic control, it proceeds to step 3. Otherwise, it is manual control and proceeds to step 4.

[0021] Step 3, PLC controls the pneumatic water valve of the water inlet pipe to supply water to the sizing high-pressure water dephosphorization water storage tank, and adjusts the water level in the sizing high-pressure water dephosphorization water storage tank;

[0022] Step 4: supply water to the sizing high-pressure water dephosphorization water storage tank according to the operator's requirements to meet the operator's sizing high-pressure water dephosphorization water storage tank liquid level requirements.

[0023] Moreover, the specific implementation method of step 1 is: setting the opening of the pneumatic water valve of the water inlet pipe to a fully open state, a half-open state and a 10% open state, and detecting the liquid level of the sizing high-pressure water dephosphorization water tank through the upper sizing high-pressure water dephosphorization water tank level sensor, the middle sizing high-pressure water dephosphorization water tank level sensor and the lower sizing high-pressure water dephosphorization water tank level sensor.

[0024] Moreover, the specific implementation method of step 3 is: when the liquid level sensor of the upper sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is full, and then controls the pneumatic water valve of the water inlet pipe to be 10% open to supply water; when the liquid level sensor of the middle sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is about to be full, and then controls the pneumatic water valve of the water inlet pipe to be half-open and the pneumatic water valve of the overflow tank to supply water; when the liquid level sensor of the lower sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is short of water, and then controls the pneumatic water valve of the water inlet pipe to be fully open and the pneumatic water valve of the overflow tank to supply water.

[0025] Moreover, the overflow tank pneumatic water valve determines the water storage status of the overflow tank according to the overflow tank liquid level sensor. If the overflow tank liquid level sensor detects a signal, there is water in the overflow tank, and the overflow tank pneumatic water valve is opened to supply water. If the overflow tank liquid level sensor does not detect a signal, there is insufficient water in the overflow tank, and the overflow tank pneumatic water valve is closed.

[0026] The advantages and positive effects of the present invention are:

[0027] The present invention includes a pneumatic water valve, a PLC and a communication cable, wherein the pneumatic water valve is installed at the water inlet pipe of a sizing high-pressure water dephosphorization water storage tank, and is used to control the water inlet amount of the sizing high-pressure water dephosphorization water storage tank, and the pneumatic water valve is connected to the PLC via a communication cable, the communication cable is used to transmit signals, and the PLC is used to control the pneumatic water valve. The present invention can realize the control function of automatic water inlet and water stop of the sizing high-pressure water dephosphorization water storage tank through the linkage of the liquid level sensor of the sizing high-pressure water dephosphorization water storage tank and the pneumatic water valve of the water inlet pipe, and reduces the waste of water energy when shutting down, and at the same time increases an overflow water tank to store the overflow water, and replenishes the sizing high-pressure water dephosphorization water storage tank when it is short of water, thereby reusing water resources, further reducing the waste of water resources, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the system of the present invention.

[0029] Description of labels:

[0030] 1.1- water inlet pipe pneumatic water valve, 1.2- overflow water tank pneumatic water valve, 2-PLC, 3- communication cable, 4- overflow water tank, 5.1- upper sizing high pressure water dephosphorization water storage tank level sensor, 5.2- middle sizing high pressure water dephosphorization water storage tank level sensor, 5.3- lower sizing high pressure water dephosphorization water storage tank level sensor, 5.4- overflow water tank level sensor. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings.

[0032] Sizing high pressure water descaling adds water valve energy saving system, such as Figure 1 As shown, it includes a pneumatic water valve, PLC2 and a communication cable 3, wherein the pneumatic water valve is installed at the water inlet pipe of the sizing high-pressure water dephosphorization water storage tank, and is used to control the water inlet amount of the sizing high-pressure water dephosphorization water storage tank. The pneumatic water valve is connected to the PLC through a communication cable. The communication cable is used to transmit signals, and the PLC is used to control the pneumatic water valve.

[0033] The present invention further comprises an overflow water tank 4, the input end of which is connected to the overflow pipe and is used to collect water overflowing from the overflow pipe.

[0034] The pneumatic water valve includes an inlet pipe pneumatic water valve 1.1 and an overflow tank pneumatic water valve 1.2, wherein the inlet pipe pneumatic water valve is installed at the water inlet pipe of the sizing high-pressure water dephosphorization water storage tank, and is used to control the water inlet amount of the sizing high-pressure water dephosphorization water storage tank, and the overflow tank pneumatic water valve is installed at the output end of the overflow water tank, and is used to input the water in the overflow water tank into the sizing high-pressure water dephosphorization water storage tank.

[0035] The present invention also includes a liquid level sensor, wherein the liquid level sensor includes a sizing high-pressure water dephosphorization water storage tank liquid level sensor and an overflow water tank liquid level sensor 5.4, the sizing high-pressure water dephosphorization water storage tank liquid level sensor is installed inside the sizing high-pressure water dephosphorization water storage tank, and is used to detect the liquid level of the sizing high-pressure water dephosphorization water storage tank, and the overflow water tank liquid level sensor is installed inside the overflow water tank, and is used to detect the liquid level of the overflow water tank. The liquid level sensor is connected to the PLC via wireless.

[0036] The sizing high-pressure water dephosphorization water tank level sensor comprises an upper sizing high-pressure water dephosphorization water tank level sensor 5.1, a middle sizing high-pressure water dephosphorization water tank level sensor 5.2 and a lower sizing high-pressure water dephosphorization water tank level sensor 5.3, wherein the upper sizing high-pressure water dephosphorization water tank level sensor is installed at the upper part of the inner wall of the sizing high-pressure water dephosphorization water tank, the middle sizing high-pressure water dephosphorization water tank level sensor is installed at the middle part of the inner wall of the sizing high-pressure water dephosphorization water tank, and the lower sizing high-pressure water dephosphorization water tank level sensor is installed at the bottom of the inner wall of the sizing high-pressure water dephosphorization water tank. The upper sizing high-pressure water dephosphorization water tank level sensor is used to detect whether the water in the sizing high-pressure water dephosphorization water tank is full, the middle sizing high-pressure water dephosphorization water tank level sensor is used to detect whether the sizing high-pressure water dephosphorization water tank needs to be increased, and the lower sizing high-pressure water dephosphorization water tank level sensor is used to detect whether there is water in the sizing high-pressure water dephosphorization water tank.

[0037] When the liquid level sensor of the upper sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is full, and controls the pneumatic water valve of the water inlet pipe to be 10% open to supply water. When the liquid level sensor of the middle sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is about to be full, and controls the pneumatic water valve of the water inlet pipe to be half-open and the pneumatic water valve of the overflow tank to supply water. When the liquid level sensor of the lower sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is short of water, and controls the pneumatic water valve of the water inlet pipe to be fully open and the pneumatic water valve of the overflow tank to supply water.

[0038] An energy-saving method for a sizing high-pressure water descaling and water-adding valve energy-saving system, characterized in that it comprises the following steps:

[0039] Step 1: Set the opening of the pneumatic water valve of the water inlet pipe, and detect the liquid level status in the sizing high-pressure water dephosphorization water storage tank through the sizing high-pressure water dephosphorization water storage tank liquid level sensor.

[0040] The specific implementation method of step 1 is: set the opening of the pneumatic water valve of the water inlet pipe to a fully open state, a half-open state and a 10% open state, and detect the liquid level of the sizing high-pressure water dephosphorization water tank through the upper sizing high-pressure water dephosphorization water tank level sensor, the middle sizing high-pressure water dephosphorization water tank level sensor and the lower sizing high-pressure water dephosphorization water tank level sensor.

[0041] Step 2: The liquid level sensor of the sizing high-pressure water dephosphorization water tank transmits the detected data to the PLC through the communication cable. The PLC determines the control mode. If it is automatic control, proceed to step 3; otherwise, it is manual control and proceed to step 4.

[0042] Step 3, PLC controls the pneumatic water valve of the water inlet pipe to supply water to the fixed-size high-pressure water dephosphorization water storage tank, and adjusts the water level in the fixed-size high-pressure water dephosphorization water storage tank.

[0043] The specific implementation method of step 3 is: when the liquid level sensor of the upper sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is full, and then controls the pneumatic water valve of the water inlet pipe to be 10% open to supply water; when the liquid level sensor of the middle sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is about to be full, and then controls the pneumatic water valve of the water inlet pipe to be half-open and the pneumatic water valve of the overflow tank to supply water; when the liquid level sensor of the lower sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is short of water, and then controls the pneumatic water valve of the water inlet pipe to be fully open and the pneumatic water valve of the overflow tank to supply water.

[0044] The overflow tank pneumatic water valve determines the water storage status of the overflow tank according to the overflow tank liquid level sensor. If the overflow tank liquid level sensor detects a signal, there is water in the overflow tank, and the overflow tank pneumatic water valve is opened to supply water. If the overflow tank liquid level sensor does not detect a signal, there is insufficient water in the overflow tank, and the overflow tank pneumatic water valve is closed.

[0045] Step 4: supply water to the sizing high-pressure water dephosphorization water storage tank according to the operator's requirements to meet the operator's sizing high-pressure water dephosphorization water storage tank liquid level requirements.

[0046] The present invention includes a pneumatic water valve, a PLC and a communication cable, wherein the pneumatic water valve is installed at the water inlet pipe of a sizing high-pressure water dephosphorization water storage tank, and is used to control the water inlet amount of the sizing high-pressure water dephosphorization water storage tank, and the pneumatic water valve is connected to the PLC via a communication cable, the communication cable is used to transmit signals, and the PLC is used to control the pneumatic water valve. The present invention can realize the control function of automatic water inlet and water stop of the sizing high-pressure water dephosphorization water storage tank through the linkage of the liquid level sensor of the sizing high-pressure water dephosphorization water storage tank and the pneumatic water valve of the water inlet pipe, and reduces the waste of water energy when shutting down, and at the same time increases an overflow water tank to store the overflow water, and replenishes the sizing high-pressure water dephosphorization water storage tank when it is short of water, thereby reusing water resources, further reducing the waste of water resources, and saving costs.

[0047] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. The new water valve energy-saving system for sizing high-pressure water descaling is characterized by: It includes a pneumatic water valve, a PLC and a communication cable, wherein the pneumatic water valve is installed at the water inlet pipe of a fixed-size high-pressure water dephosphorization water storage tank to control the water inlet volume of the fixed-size high-pressure water dephosphorization water storage tank. The pneumatic water valve is connected to the PLC via a communication cable. The communication cable is used to transmit signals, and the PLC is used to control the pneumatic water valve.

2. The energy-saving system for adding a new water valve for sizing high-pressure water descaling according to claim 1 is characterized by: It also includes an overflow water tank, the input end of which is connected to the overflow pipe and is used to collect water overflowing from the overflow pipe.

3. The energy-saving system for adding a new water valve for sizing high-pressure water descaling according to claim 2 is characterized by: The pneumatic water valve includes an inlet pipe pneumatic water valve and an overflow tank pneumatic water valve, wherein the inlet pipe pneumatic water valve is installed at the water inlet pipe of the sizing high-pressure water dephosphorization water storage tank, and is used to control the water inlet amount of the sizing high-pressure water dephosphorization water storage tank, and the overflow tank pneumatic water valve is installed at the output end of the overflow water tank, and is used to input the water in the overflow water tank into the sizing high-pressure water dephosphorization water storage tank.

4. The energy-saving system for adding a new water valve for sizing high-pressure water descaling according to claim 1 is characterized by: It also includes a liquid level sensor, wherein the liquid level sensor includes a sizing high-pressure water dephosphorization water storage tank liquid level sensor and an overflow water tank liquid level sensor. The sizing high-pressure water dephosphorization water storage tank liquid level sensor is installed inside the sizing high-pressure water dephosphorization water storage tank to detect the liquid level of the sizing high-pressure water dephosphorization water storage tank. The overflow water tank liquid level sensor is installed inside the overflow water tank to detect the liquid level of the overflow water tank.

5. The energy-saving system for adding a new water valve for sizing high-pressure water descaling according to claim 3 is characterized by: The sizing high-pressure water dephosphorization water tank level sensor comprises an upper sizing high-pressure water dephosphorization water tank level sensor, a middle sizing high-pressure water dephosphorization water tank level sensor and a lower sizing high-pressure water dephosphorization water tank level sensor, wherein the upper sizing high-pressure water dephosphorization water tank level sensor is installed at the upper part of the inner wall of the sizing high-pressure water dephosphorization water tank, the middle sizing high-pressure water dephosphorization water tank level sensor is installed at the middle part of the inner wall of the sizing high-pressure water dephosphorization water tank, and the lower sizing high-pressure water dephosphorization water tank level sensor is installed at the bottom of the inner wall of the sizing high-pressure water dephosphorization water tank. The upper sizing high-pressure water dephosphorization water tank level sensor is used to detect whether the water in the sizing high-pressure water dephosphorization water tank is full, the middle sizing high-pressure water dephosphorization water tank level sensor is used to detect whether the sizing high-pressure water dephosphorization water tank needs to be increased, and the lower sizing high-pressure water dephosphorization water tank level sensor is used to detect whether there is water in the sizing high-pressure water dephosphorization water tank.

6. An energy-saving method for an energy-saving system for a fixed-size high-pressure water descaling and new water supply valve according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1, setting the opening of the pneumatic water valve of the water inlet pipe, and detecting the liquid level state in the sizing high-pressure water dephosphorization water storage tank through the sizing high-pressure water dephosphorization water storage tank liquid level sensor; Step 2: The liquid level sensor of the sizing high-pressure water dephosphorization water tank transmits the detected data to the PLC through the communication cable. The PLC determines the control mode. If it is automatic control, it proceeds to step 3. Otherwise, it is manual control and proceeds to step 4. Step 3, PLC controls the pneumatic water valve of the water inlet pipe to supply water to the sizing high-pressure water dephosphorization water storage tank, and adjusts the water level in the sizing high-pressure water dephosphorization water storage tank; Step 4: supply water to the sizing high-pressure water dephosphorization water storage tank according to the operator's requirements to meet the operator's sizing high-pressure water dephosphorization water storage tank liquid level requirements.

7. The energy-saving method for the energy-saving system of the fixed-size high-pressure water descaling and new water supply valve according to claim 6 is characterized by: The specific implementation method of step 1 is: setting the opening of the pneumatic water valve of the water inlet pipe to a fully open state, a half-open state and a 10% open state, and detecting the liquid level of the sizing high-pressure water dephosphorization water tank through the upper sizing high-pressure water dephosphorization water tank level sensor, the middle sizing high-pressure water dephosphorization water tank level sensor and the lower sizing high-pressure water dephosphorization water tank level sensor.

8. The energy-saving method of the energy-saving system for the sizing high-pressure water descaling and new water supply valve according to claim 6 is characterized by: The specific implementation method of step 3 is: when the liquid level sensor of the upper sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is full, and then controls the pneumatic water valve of the water inlet pipe to be 10% open to supply water; when the liquid level sensor of the middle sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is about to be full, and then controls the pneumatic water valve of the water inlet pipe to be half-open and the pneumatic water valve of the overflow tank to supply water; when the liquid level sensor of the lower sizing high-pressure water dephosphorization water storage tank detects a signal, the PLC determines that the sizing high-pressure water dephosphorization water storage tank is short of water, and then controls the pneumatic water valve of the water inlet pipe to be fully open and the pneumatic water valve of the overflow tank to supply water.

9. The energy-saving method for the energy-saving system of the fixed-size high-pressure water descaling and new water supply valve according to claim 8, characterized in that: The overflow tank pneumatic water valve determines the water storage status of the overflow tank according to the overflow tank liquid level sensor. If the overflow tank liquid level sensor detects a signal, there is water in the overflow tank, and the overflow tank pneumatic water valve is opened to supply water. If the overflow tank liquid level sensor does not detect a signal, there is insufficient water in the overflow tank, and the overflow tank pneumatic water valve is closed.

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