Water quality control device applied to ISC type indirect cooling system

Abstract

The utility model discloses a water quality control device applied to an ISC type intercooling system, the water quality control device comprises a plurality of carbon dioxide gas cylinders, each carbon dioxide gas cylinder is communicated with a dosing pipeline in the ISC type intercooling system through a conveying pipeline, the conveying pipeline is provided with a pressure reducing valve and a flow control valve, and when the ISC type intercooling system operates, the pressure reducing valve is connected with the flow control valve. The pressure reducing valve and the flow control valve are opened, carbon dioxide in the carbon dioxide gas cylinder is conveyed into the ISC type indirect cooling system through the conveying pipeline, the PH value of circulating water in the ISC type indirect cooling system can be adjusted to be in the range of 7.0-8.30, and then the PH value of cold circulating water and the aluminum ion index can be controlled to be in the qualified range. Therefore, the problems of scaling and corrosion of equipment such as a system intermediate cooling tower radiator can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a water quality control device applied to an ISC type indirect cooling system. Background Art

[0002] ISC intercooling system has become the main system for the development of thermal power in the coal-rich and water-deficient areas in northern my country. This ISC intercooling system uses a cooling triangle made of pure aluminum. The system contains nearly 10,000 tons of desalted water. The system is not designed with a bypass water purification system. Due to the lack of appropriate water quality adjustment methods and anti-corrosion technology, the circulating water of the ISC intercooling system has experienced varying degrees of water quality deterioration during the construction process or after commissioning, and even radiator corrosion and leakage and many other problems.

[0003] Common water quality abnormalities during the operation of the ISC intercooling system include high pH value and excessive aluminum. These water quality abnormalities are only external manifestations. The real threat to the system is that the abnormal water quality accelerates the corrosion of pure aluminum. The traditional way is that the ISC intercooling system uses desalted water as make-up water. The original design intention is to use the low conductivity of desalted water to slow down the corrosion behavior of the material. However, the surface area of ​​the pipes in the system is large and it is difficult for the system to completely drain the flushing water. Instead, the pH value of the circulating water in the intercooling system increases abnormally during operation. The pH value of the system can rise to above 9.0 during the trial operation and commissioning, and up to 9.5. Pure aluminum is an amphoteric metal, and the oxide film on its surface will be destroyed in such an alkaline environment. Some radiators in the intercooling tower leaked after a short period of operation. Therefore, a new water quality control device is urgently needed to prevent scaling and corrosion of equipment in the ISC intercooling system. Utility Model Content

[0004] The purpose of the present application is to provide a water quality control device for an ISC type intercooling system, so as to solve the problem of pH value of circulating water in the existing ISC type intercooling system, which in turn causes scaling and corrosion of heavy equipment in the system.

[0005] In order to solve the above technical problems, the present application provides a water quality control device applied to an ISC type indirect cooling system, comprising:

[0006] A plurality of carbon dioxide gas cylinders are each connected to a dosing pipeline in an ISC type intercooling system through a delivery pipeline, and a pressure reducing valve and a flow control valve are provided on the delivery pipeline.

[0007] Based on the above embodiment, as a preferred implementation manner, the number of the carbon dioxide gas cylinders is two.

[0008] Based on the above embodiments, as a preferred implementation mode, the delivery pipeline is a stainless steel pipeline.

[0009] It should be noted in the solution that the flow control valve is a manual valve.

[0010] Based on the above embodiment, as a preferred implementation mode, a ball valve is further provided on the drug adding pipeline.

[0011] Compared with the prior art, the utility model provides a water quality control device for an ISC type intercooling system, comprising a plurality of carbon dioxide gas cylinders, each of which is connected to a dosing pipe in the ISC type intercooling system by a delivery pipe, a pressure reducing valve and a flow control valve being arranged on the delivery pipe, and when the ISC type intercooling system is in operation, the pressure reducing valve and the flow control valve are opened to deliver the carbon dioxide in the carbon dioxide gas cylinder to the ISC type intercooling system through the delivery pipe, so that the pH value of the circulating water in the ISC type intercooling system can be adjusted to within the range of 7.0-8.30, and further the pH value and the aluminum ion index of the cold circulating water can be controlled within the qualified range, thereby preventing scaling and corrosion problems of equipment such as the radiator of the intermediate cooling tower of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0013] Figure 1 It is a schematic diagram of the structure of a water quality control device applied to an ISC type indirect cooling system;

[0014] In the figure: 1. Carbon dioxide cylinder; 2. Delivery pipeline; 3. Dosing pipeline; 4. Pressure reducing valve; 5. Flow control valve; 6. Ball valve. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0016] The core of this application is to provide a water quality control device applied to an ISC type intercooling system, which solves the problem of pH value of circulating water in the existing ISC type intercooling system, which in turn causes scaling and corrosion of heavy equipment in the system.

[0017] Figure 1 This is a schematic diagram of the structure of a water quality control device used in an ISC type indirect cooling system. Figure 1 shown.

[0018] Example 1

[0019] A water quality control device applied to an ISC type intercooling system includes a plurality of carbon dioxide gas cylinders 1, wherein the carbon dioxide gas cylinders 1 contain carbon dioxide at a pressure of 13 MPA, and each of the carbon dioxide gas cylinders 1 is connected to a dosing pipeline 3 in the ISC type intercooling system through a delivery pipeline 2, and a pressure reducing valve 4 and a flow control valve 5 are provided on the delivery pipeline 2. The pressure reducing valve 4 can automatically reduce a higher air pressure to a required low air pressure; when the air (steam) pressure on the high-pressure side fluctuates, it can automatically adjust to stabilize the air (steam) pressure on the low-pressure side; by adjusting, the inlet pressure is reduced to a required outlet pressure, and the outlet pressure is automatically kept stable by relying on the energy of the medium itself. The setting of the flow control valve 5 can realize the control of the carbon dioxide delivery flow. When in use, the pressure reducing valve 4 and the flow control valve 5 can be opened to transport the carbon dioxide in the carbon dioxide cylinder 1 to the ISC type intercooling system through the delivery pipeline 2, and the pH value of the circulating water in the ISC type intercooling system can be reduced from 9.0 to the range of 7.0-8.30, effectively preventing scaling and corrosion problems of equipment such as the intermediate cooling tower radiator of the ISC type intercooling system.

[0020] Example 2

[0021] On the basis of Example 1, a water quality control device applied to an ISC type intercooling system may be provided with two carbon dioxide gas cylinders 1 to provide carbon dioxide for the ISC type intercooling system so as to reduce the pH value of circulating water in the system.

[0022] On the basis of Example 1, a water quality control device applied to an ISC type indirect cooling system, in order to ensure the service life of the delivery pipeline 2, preferably, the delivery pipeline 2 can be set as a stainless steel pipeline.

[0023] On the basis of Example 1, a water quality control device applied to an ISC type indirect cooling system, in order to facilitate manual adjustment, preferably, the flow control valve 5 can be set as a manual valve.

[0024] On the basis of Example 1, a water quality control device is applied to an ISC type intercooling system. The dosing pipeline 3 is also provided with a ball valve 6. The ball valve 6 is a commonly used self-opening and closing valve. The flow rate and direction of the fluid can be controlled by the provided ball valve 6, or the flow state of the fluid can be controlled to ensure the safe operation of the relevant pipelines.

[0025] The utility model provides a water quality control device for an ISC type intercooling system, comprising a plurality of carbon dioxide gas cylinders 1, each of the carbon dioxide gas cylinders 1 having a delivery pipeline 2 connected to a dosing pipeline 3 in the ISC type intercooling system, a pressure reducing valve 4 and a flow control valve 5 being arranged on the delivery pipeline 2, and when the ISC type intercooling system is in operation, the pressure reducing valve 4 and the flow control valve 5 are opened to deliver the carbon dioxide in the carbon dioxide gas cylinder 1 to the ISC type intercooling system through the delivery pipeline 2, so that the pH value of the circulating water in the ISC type intercooling system can be adjusted to within the range of 7.0-8.30, and further the pH value and the aluminum ion index of the cold circulating water can be controlled within the qualified range, thereby preventing scaling and corrosion problems of the radiator of the intermediate cooling tower of the system and other equipment.

[0026] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art disclosed in the present application. The specification and examples are to be regarded as exemplary only, and the true scope of the present application is indicated by the claims.

[0027] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A water quality control device applied to an ISC type indirect cooling system, characterized in that: include: A plurality of carbon dioxide gas cylinders (1), each of the carbon dioxide gas cylinders (1) is connected to a dosing pipeline (3) in an ISC type intercooling system via a delivery pipeline (2), and a pressure reducing valve (4) and a flow control valve (5) are provided on the delivery pipeline (2).

2. The water quality control device for an ISC type indirect cooling system according to claim 1, characterized in that: The number of the carbon dioxide gas cylinders (1) is two.

3. The water quality control device for an ISC type indirect cooling system according to claim 1, characterized in that: The delivery pipeline (2) is a stainless steel pipeline.

4. The water quality control device for an ISC type indirect cooling system according to claim 1, characterized in that: The flow control valve (5) is a manual valve.

5. The water quality control device for an ISC type indirect cooling system according to claim 1, characterized in that: The drug adding pipeline (3) is also provided with a ball valve (6).

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