Automatic PH value adjusting and alarming device for air conditioner closed-type chilled water system of power plant

A chilled water system and automatic adjustment technology, which is applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc. Real-time monitoring and out-of-standard alarms, reducing corrosion and extending operating life

Active Publication Date: 2020-02-14
HENNAN ELECTRIC POWER SURVEY & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemically desalted water is weakly acidic and potentially corrosive to carbon steel pipes. Especially when the air-conditioning system has been in operation for a long time but is not properly mai

Method used

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  • Automatic PH value adjusting and alarming device for air conditioner closed-type chilled water system of power plant
  • Automatic PH value adjusting and alarming device for air conditioner closed-type chilled water system of power plant

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0056] In Embodiment 1, the ratio of the total water volume in the make-up tank 9 to the capacity of the air-conditioning closed chilled water system 1 is set as x(x <1) In order to simplify the calculation, consider that the one-time replenishment volume is the total water volume in the replenishment tank, set the chemical demineralized water PH value a, set the dosing system corrosion inhibitor to ammonia, and set the system PH value b. Set the high threshold and low threshold of the first PH sensor 7 to PHg and PHd. The diameter of the inlet pipe for chemical desalination is D, the diameter of the inlet pipe for the dosing system is d, the second valve 11 and the third valve 12 are set as linear valves, and the second valve 11 is the valve on the inlet pipe for chemical desalination. The three valve 12 is a valve on the water inlet pipe of the dosing system.

[0057] Set the required PH value of the air-conditioning closed chilled water system 1 to be 7 to 7.5.

[0058] The che...

Example Embodiment

[0074] In Embodiment 2, the ratio of the total water volume in the makeup water tank 9 to the capacity of the air-conditioning closed chilled water system is set to 5%. To simplify the calculation, the one-time makeup water volume is considered to be the total water volume in the makeup water tank, and the chemical demineralized water PH value is set to 6.5. Set the corrosion inhibitor as ammonia and set the PH value of the dosing system to 10. The high threshold and low threshold of the first PH sensor 7 are set to PHg=10.5 and PHd=6. The diameter of the inlet pipe for chemical desalination is DN50, and the diameter of the inlet pipe for the dosing system is DN10. Set the second valve 11 and the third valve 12 as linear valves, and the second valve 11 is the valve on the inlet pipe for chemical desalination. The third valve 12 is a valve on the water inlet pipe of the dosing system.

[0075] Set the required PH value of the air-conditioning closed chilled water system 1 to 7.

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PUM

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Abstract

The invention discloses an automatic PH value adjusting and alarming device for an air conditioner closed-type chilled water system of a power plant. The automatic PH value adjusting and alarming device is characterized by comprising the air conditioner closed-type chilled water system, a chilled water supply and pressure stabilizing system and a control alarm apparatus. According to the automaticPH value adjusting and alarming device, the PH value of the air conditioner chilled water system is adjusted while the water supply system is utilized for stabilizing the pressure of the air conditioner system, the PH value of the air conditioner chilled water system is stabilized within a reasonable range, the corrosion of pipes of the air conditioner system is reduced, and prolonging of the operation life of the whole air conditioner system is facilitated.

Description

technical field [0001] The invention belongs to the field of large-scale thermal power plants, and in particular relates to a pH value automatic adjustment and alarm device of an air-conditioning closed chilled water system in a power plant. Background technique [0002] Centralized air-conditioning systems are usually used in the main workshop and centralized control building areas of large thermal power plants in my country. The water source is generally chemical desalted water used in plants, and the water pipes are generally made of galvanized steel pipes. However, chemically desalted water is weakly acidic and potentially corrosive to carbon steel pipes. Especially when the air-conditioning system has been in operation for a long time but is not properly maintained, the corrosion of the pipes will gradually increase, and the water quality will deteriorate, affecting the air-conditioning equipment and even the entire air-conditioning system. of normal operation. [0003...

Claims

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Application Information

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IPC IPC(8): F24F11/32F24F11/52F24F11/62F24F11/84
CPCF24F11/32F24F11/52F24F11/62F24F11/84
Inventor 程丽郭红兵
Owner HENNAN ELECTRIC POWER SURVEY & DESIGN INST
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