2024 hot reliably water machines water treatment systems water purification system for generator

Product description:

Generator cooling water alkali dosing device

1. The internal cooling water alkali addition device is a microtreatment device for the ultra-purification of the internal cooling water of the generator, which can make the PH value of the cooling water entering the rotor of the generator reach the optimum anti-corrosion range. 2. Firstly, the internal cooling water of the generator is ultra-purified by means of ion-exchange resin to make the internal cooling water as pure as possible, and then lye is added at the replenishment point of the ion-exchanger outlet to raise the PH value of the internal cooling water to 8.5-9.0, which can effectively reduce the corrosion protection range of the rotor cooling water entering the generator. 8.5-9.0, which can effectively reduce the degree of corrosion on copper wire rods.

1.Product Background

Pure water, with its high heat capacity, good non-conductivity and easy availability is widely used in large capacity generators as a cooling medium for generators. The copper wire stator coils of a turbine generator are cooled by passing water through hollow wires, which is one of the most traditional methods used for a long time. cooling, which is one of the most traditional methods used for a long time. In power plants, the cooling water for the generator comes from the power plant's demineralised water or condensate. plant's demineralised water or condensate. This cooling water achieves a low conductivity, but its PH value is barely around 7, and most of the time it is below 7. It can achieve low conductivity, but its PH value can only barely reach about 7, and most of the time it is lower than 7, which makes the copper hollow conductor of generator stator always in the region of high weak acid corrosion rate. The copper hollow conductor of generator stator is always in the weak acidic corrosion rate high area, which has certain erosion to the system. With the gradual increase of single generator capacity, especially When the generator capacity is above 600MW, due to the rise of stator coil voltage to ground and the increase of coil current density, it is gradually found that the stator coil water circuit is not as strong as the stator coil water circuit. gradually found that the stator coil water circuit copper wire hollow conductor internal scaling phenomenon is also more and more frequent, cooling water on the copper wire corrosion is also more and more obvious, especially water water The corrosion of cooling water on copper wire is also more and more obvious, especially when the water quality is not well controlled, this phenomenon is more obvious.

2.Solutions to reduce copper corrosion

⑴Adding corrosion inhibitors to water systems:
Early way, side effects, long-term use of deterioration of water quality, no longer used.
⑵Adopt small mixed-bed technology + intermittent water exchange operation to control water quality:
Conductivity can meet the standard, but PH is still low, copper ion concentration exceeds the standard, to solve the rod corrosion
effect is not obvious
⑶Adopting special type of resin and special structure of internal cold water special ultra-purification treatment device:
PH can be controlled between 7.78-7.85, still does not meet the GB/T 7064 standard PH8-9, slowing down corrosion, not a
fundamental solution.
⑷Use vacuum method + ion exchange method:
Can remove O2 in the supplementary water, control copper ions and conductivity to reach the standard, but the PH is only 7.0-7.3.
This method of water system requires a high degree of airtightness, it is actually more difficult to do!
⑸Directly adopt PH signal to control the addition of alkali to the cooling water system:
Pure water PH instrumentation is unstable, causing unstable alkali control, and then the water quality is also unstable, the
corrosion of the copper wire is still a potential problem
Currently the most effective solution for copper corrosion - NaOH injection

3.Generator cooling water adding alkali device working principle

⑴A set of sodium hydroxide dosing device is set up at the outlet of the ion exchanger to improve the pH value of the effluent water. Sodium hydroxide solution is dosed through a syringe pump.
⑵The PH of the cooling water is indirectly controlled by controlling the conductivity of the alkaline solution with the
corresponding relationship between conductivity and PH in pure water.
⑶Ion exchanger outlet water is treated pure water, the conductivity of the mixed lye solution depends only on the concentration of sodium hydroxide solution, using the ratio between the conductivity of the mixed lye solution with alkali and the set value of the conductivity (1.5 μm/cm) as a control signal to implement the control of the injection rate of the syringe pump for the addition of the dosage injection rate.
⑷The conductivity of the main water circuit is controlled by controlling the conductivity of the small loop of the softened water treatment circuit, increasing the reliability of the generator water system operation.

Company Information:

Henan Yanjiang Environmental Technology Co., Ltd. as a professional integrated environmental service provider, Committed to the continuous improvement of traditional business and the development of forward-looking business, for the global cities, towns and enterprises, to provide environmental and development of the overall solution and long-term stewardship service, in the field of environmental pollution control and facility operation, sewage treatment, seawater desalination, water purification equipment and water reuse, organic waste comprehensive utilization and biomass energy development and utilization, the environment Business activities are carried out in the fields of restoration, environmental safety management, environmental advisory services and environmental investment and financing management.

FAQ:

Q1:Are you trading company or manufacturer?
A:We are factory.
Q2:How long is your delivery time?
A:Generally it is 15~20 days. Specific time depends on your ordel volume.
Q3:Can l get your products with our logo and design?A:Customized service is available. We provide OEM or ODM by customer's logo
Q4: Do you accept sample order?
A: Yes,we can make your customized sample before mass order placed.
Q5: How about the quality of your products?
A:We have many years of experience in construction machinery manufacturing. All machines are
Manufactured in strict accordance with national and international standards, each equipment is tested before leaving the factory.