Adjusting device of combined cycle unit water system

Abstract

An adjusting device for a water system of a combined cycle unit comprises a controller, the combined cycle unit, a cooling water tank, a sedimentation filter tank, a medicament reaction tank, a scale inhibitor water tank, a corrosion inhibitor water tank, a sterilization algicide water tank, a diverter pump, a cooling tower, a standby water storage tower, a confluence water pump and a temperature measurement and control device. According to the device, all the parts are connected through the water conveying pipeline, cyclic utilization and dosing treatment of cooling water are achieved, water scale is reduced, the metal corrosion speed is slowed down, and microorganism growth is inhibited. When the temperature of the combined cycle unit exceeds a set threshold value, the temperature measurement and control device can send an electric signal to the controller, the controller controls the standby cooling tower to be started and pumps cooling water into the standby water storage tower to be cooled, and the cooling water is pumped into the combined cycle unit to be cooled after being cooled. And finally, cooling water is pumped back to the cooling water pool through a water pump, and a circulation period is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical automatic control, and particularly relates to a regulating device for the water system of a combined cycle unit. Background Art

[0002] The cooling water system of a combined cycle unit is an indispensable and important part of power station operation. It is mainly responsible for cooling main equipment such as gas turbines, steam turbines and generators to ensure the safe and stable operation of the unit under high temperature and high pressure environments. Such a system usually includes basic facilities such as cooling towers, cooling water ponds, pumps and pipelines, as well as supporting water treatment devices such as sedimentation and filtration ponds, chemical reaction ponds, etc., to ensure that the quality of the cooling water meets the unit usage standards. During the combined cycle power generation process, the high-temperature flue gas discharged by the gas turbine is used to generate steam, and after this part of the steam drives the steam turbine to do work, it needs to be condensed through the cooling water system to maintain the continuous operation of the system. Therefore, the cooling water system not only needs to ensure sufficient cooling capacity, but also needs to prevent problems such as scale, corrosion and biological pollution through effective water quality management. Content of the Utility Model

[0003] The purpose of the utility model is to provide a regulating device for the water system of a combined cycle unit. To solve the problems of the prior art, the utility model provides the following technical solutions:

[0004] A regulating device for the water system of a combined cycle unit, including a controller, a combined cycle unit. It is characterized in that it includes a cooling water pond, the cooling water pond is connected to a sedimentation and filtration pond through a water supply pipeline, the sedimentation and filtration pond is connected to a chemical reaction pond through a water supply pipeline and is provided with a water pump, the upper end of the chemical reaction pond is installed with a scale inhibitor water tank, a corrosion inhibitor water tank, and a bactericide and algaecide water tank. The bottom water outlets of the scale inhibitor water tank, the corrosion inhibitor water tank, and the bactericide and algaecide water tank are all provided with electromagnetic valves. The chemical reaction pond is connected to a shunt pump through a water supply pipeline, the shunt pump is respectively connected to a cooling tower and a standby water storage tower through water supply pipelines, the bottom water outlet of the standby water storage tower is provided with an electromagnetic valve, the standby water storage tower is respectively connected to the chemical reaction pond and a standby cooling tower through water supply pipelines and is provided with a water pump, the cooling tower and the standby cooling tower are respectively connected to a combined water pump through water supply pipelines, the combined water pump is connected to the combined cycle unit through a water supply pipeline, the combined cycle unit is installed with a temperature measurement and control device, the temperature measurement and control device is electrically connected to the controller, and the controller is also electrically connected to the shunt pump, the combined water pump, all the water pumps, and all the electromagnetic valves.

[0005] Preferably, the cooling water pond stores cooling water, the cooling water pond pumps the cooling water into the sedimentation and filtration pond through a water pump, and the sedimentation and filtration pond pumps the cooled water into the chemical reaction pond through a water pump after sedimentation treatment.

[0006] Preferably, the scale inhibitor water tank stores a scale inhibitor, the corrosion inhibitor water tank stores a corrosion inhibitor, and the biocide water tank stores a biocide. When the electromagnetic valve is opened, the scale inhibitor, corrosion inhibitor, and biocide fall and are pumped into the chemical reaction tank by a water pump.

[0007] Preferably, the cooling water in the chemical reaction tank reduces scale through the scale inhibitor, slows down the corrosion rate of metals through the corrosion inhibitor, and inhibits the growth of bacteria, algae, and other microorganisms in the water through the biocide.

[0008] Preferably, the standby water storage tower stores the cooling water after the cooling water is dosed. The standby water storage tower will open the electromagnetic valve every 30 minutes and pump the stored cooling water back to the chemical reaction tank through a water pump.

[0009] Preferably, the temperature measurement and control device detects the temperature of the combined cycle unit in real time. When the temperature exceeds the set threshold, an electrical signal will be sent to the controller.

[0010] Preferably, after receiving the electrical signal, the controller controls the opening of the standby cooling tower and pumps the cooling water in the standby water storage tower into the standby water storage tower for cooling. After the cooling water is cooled, it will be pumped into the combined cycle unit through a combined water pump.

[0011] Preferably, the cooling water in the combined cycle unit will be pumped into the cooling water tank through a water pump after participating in the cooling.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The temperature measurement and control device can monitor the temperature of the combined cycle unit in real time to ensure that the unit operates at the optimal temperature. When the temperature exceeds the set threshold, the system can respond quickly and automatically adjust the cooling process through the controller to ensure the efficiency and safety of the unit.

[0014] 2. The design of the shunt pump and the combined water pump allows for flexible adjustment of the flow rate of the cooling water according to actual needs, thereby optimizing the cooling effect and the system response speed.

[0015] 3. The configuration of the standby cooling tower and the standby water storage tower not only provides emergency cooling protection for the system, but also can increase the flow rate of the cooling water when needed to cope with high load or overheating conditions, ensuring the continuous and stable operation of the unit.

[0016] 4. Through the setting of the sedimentation and filtration tank and the chemical reaction tank, the system can effectively treat the impurities in the cooling water, and by adding chemical agents such as scale inhibitors, corrosion inhibitors, and biocides, reduce scale, avoid metal corrosion, and control the growth of microorganisms. Description of the Drawings

[0017] Figure 1This is the structural diagram of the regulating device for the water system of a combined cycle unit of the present utility model.

[0018] In the figure: 1. Controller; 2. Cooling water tank; 3. Sedimentation and filtration tank; 4. Chemical reaction tank; 5. Scale inhibitor water tank; 6. Corrosion inhibitor water tank; 7. Bactericide and algaecide water tank; 8. Shunt pump; 9. Cooling tower; 10. Spare water storage tower; 11. Combined cycle unit; 12. Spare cooling tower; 13. Confluent water pump; 14. Temperature measurement and control device. Specific implementation mode

[0019] A regulating device for the water system of a combined cycle unit, including a controller 1 and a combined cycle unit 11, is characterized in that it includes a cooling water tank 2. The cooling water tank 2 is connected to the sedimentation and filtration tank 3 through a water supply pipeline. The cooling water tank 2 stores cooling water, and the cooling water is pumped into the sedimentation and filtration tank 3 by a water pump. The sedimentation and filtration tank performs sedimentation treatment on the cooling water.

[0020] The sedimentation and filtration tank 3 is connected to the chemical reaction tank 4 through a water supply pipeline and is provided with a water pump. The upper end of the chemical reaction tank 4 is equipped with a scale inhibitor water tank 5, a corrosion inhibitor water tank 6, and a bactericide and algaecide water tank 7. The bottom water outlets of the scale inhibitor water tank 5, the corrosion inhibitor water tank 6, and the bactericide and algaecide water tank 7 are all provided with electromagnetic valves. The scale inhibitor water tank 5 stores scale inhibitor, the corrosion inhibitor water tank 6 stores corrosion inhibitor, and the bactericide and algaecide water tank 7 stores bactericide and algaecide. When the electromagnetic valve is opened, the scale inhibitor, corrosion inhibitor, and bactericide and algaecide fall and are pumped into the chemical reaction tank by a water pump.

[0021] The cooling water in the chemical reaction tank 4 reduces scale through the scale inhibitor, slows down the corrosion rate of metals through the corrosion inhibitor, and inhibits the growth of bacteria, algae and other microorganisms in the water through the bactericide and algaecide. The chemical reaction tank 4 is connected to the shunt pump 8 through a water supply pipeline. The shunt pump 8 is respectively connected to the cooling tower 9 and the spare water storage tower 10 through water supply pipelines. The bottom water outlet of the spare water storage tower 10 is provided with an electromagnetic valve. The spare water storage tower 10 is respectively connected to the chemical reaction tank 4 and the spare cooling tower 12 through water supply pipelines and is provided with a water pump. The spare water storage tower 10 stores the cooling water after the cooling water is dosed. The spare water storage tower 10 will open the electromagnetic valve every 30 minutes and pump the stored cooling water back to the chemical reaction tank 4 through a water pump.

[0022] The cooling tower 9 and the spare cooling tower 12 are respectively connected to the confluent water pump 13 through water supply pipelines. The confluent water pump 13 is connected to the combined cycle unit 11 through a water supply pipeline. The combined cycle unit 11 is equipped with a temperature measurement and control device 14. The cooling water in the combined cycle unit 11 will be pumped into the cooling water tank 2 through a water pump after participating in the cooling.

[0023] The temperature measurement and control device 14 is electrically connected to the controller 1. The controller 1 is also electrically connected to the shunt pump 8, the combined water pump 13, all the water extraction pumps, and all the electromagnetic valves. The temperature measurement and control device 14 detects the temperature of the combined cycle unit 11 in real time. When the temperature exceeds the set threshold, it will send an electrical signal to the controller 1. After receiving the electrical signal, the controller 1 controls the opening of the standby cooling tower 12 and pumps the cooling water from the standby water storage tower 10 into the standby water storage tower 10 for cooling. After the cooling water is cooled, it will be pumped into the combined cycle unit 11 through the combined water pump 13.

Claims

1. A regulating device for the water system of a combined cycle unit, comprising a controller (1) and a combined cycle unit (11), characterized in that, It includes a cooling water pool (2), the cooling water pool (2) is connected to a sedimentation and filtration pool (3) through a water supply pipeline, the sedimentation and filtration pool (3) is connected to a chemical reaction pool (4) through a water supply pipeline and is equipped with a water pump, an antiscale agent water tank (5), a corrosion inhibitor water tank (6), and a bactericide and algaecide water tank (7) are installed at the upper end of the chemical reaction pool (4), electromagnetic valves are provided at the bottom water outlets of the antiscale agent water tank (5), the corrosion inhibitor water tank (6), and the bactericide and algaecide water tank (7), the chemical reaction pool (4) is connected to a shunt pump (8) through a water supply pipeline, the shunt pump (8) is respectively connected to a cooling tower (9) and a standby water storage tower (10) through water supply pipelines, an electromagnetic valve is provided at the bottom water outlet of the standby water storage tower (10), the standby water storage tower (10) is respectively connected to the chemical reaction pool (4) and a standby cooling tower (12) through water supply pipelines and is equipped with a water pump, the cooling tower (9) and the standby cooling tower (12) are respectively connected to a combined water pump (13) through water supply pipelines, the combined water pump (13) is connected to a combined cycle unit (11) through a water supply pipeline, a temperature measurement and control device (14) is installed on the combined cycle unit (11), the temperature measurement and control device (14) is electrically connected to a controller (1), and the controller (1) is also electrically connected to the shunt pump (8), the combined water pump (13), all the water pumps, and all the electromagnetic valves.

2. The regulating device for the water system of a combined cycle unit according to claim 1, characterized in that The cooling water pool (2) stores cooling water, and the cooling water pool (2) pumps the cooling water into the sedimentation and filtration pool (3) through a water pump. After the sedimentation and filtration pool (3) performs sedimentation treatment on the cooling water, it pumps the cooling water into the chemical reaction pool (4) through a water pump.

3. The regulating device for the water system of a combined cycle unit according to claim 1, characterized in that, The antiscale agent water tank (5) stores antiscale agent, the corrosion inhibitor water tank (6) stores corrosion inhibitor, and the bactericide and algaecide water tank (7) stores bactericide and algaecide. When the electromagnetic valve is opened, the antiscale agent, the corrosion inhibitor, and the bactericide and algaecide fall and are pumped into the chemical reaction pool (4) through a water pump.

4. The regulating device for the water system of a combined cycle unit according to claim 1, characterized in that, In the chemical reaction pool (4), the scale of the cooling water is reduced by the antiscale agent, the corrosion rate of the metal is slowed down by the corrosion inhibitor; the growth of microorganisms in the water is inhibited by the bactericide and algaecide.

5. The regulating device for the water system of a combined cycle unit according to claim 1, characterized in that, The standby water storage tower (10) stores the cooling water after the cooling water is treated with chemicals. The standby water storage tower (10) will open the electromagnetic valve every 30 minutes and pump the stored cooling water back to the chemical reaction pool (4) through a water pump.

6. The regulating device for the water system of a combined cycle unit according to claim 1, characterized in that The temperature measurement and control device (14) detects the temperature of the combined cycle unit (11) in real time. When the temperature exceeds the set threshold, it will send an electrical signal to the controller (1).

7. The regulating device for the water system of a combined cycle unit according to claim 1, characterized in that, After receiving the electrical signal, the controller (1) controls the standby cooling tower (12) to start and pumps the cooling water in the standby water storage tower (10) into the standby water storage tower (10) for cooling. After the cooling water is cooled, it will be pumped into the combined cycle unit (11) through the combined water pump (13).

8. The regulating device for the water system of a combined cycle unit according to claim 1, characterized in that, The cooling water in the combined cycle unit (11) will be pumped into the cooling water pool (2) through a water pump after participating in the cooling.

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