When do you need to use a water cooled inverter, and how to choose so many brands?

In fact, this kind of doesn't need anything, generally just look at the functions you need, what requirements do you have, **range, and then filter it.

After all, these are all options that can be selected.

Generally speaking, some factories also need this kind of thing, because there are many of them, and these things are needed.

Immediately reply to the message to use cold water frequency brand so much.

When do you need a water-cooled inverter, just look at your own industry, do you need these things?

When do you need to use so many brands of water-cooled inverters, and how to choose? In fact, it makes me think that the ones that everyone usually uses should be better.

It should be said that unless there are special circumstances, but I don't know what brand.

When you need to use that leveling device brand, you can choose directly.

In normal situations, there are many platforms that need water-cooled inverters.

There are many brands that need to use water-cooled inverters, and you can choose from them.

If you need to use a water-cooled inverter, you can go to the 4S store to ask their staff, or go directly to the 4S store to buy, their bottles are guaranteed after sale, and the quality is still very good.

Water tank, water pump, water block (CPU, GPU, North Bridge, etc.) Cooling radiator (active or passive) If you want a good effect, make an electronic refrigeration sheet and install it on the circulation pipeline.

The water-cooled inverter air conditioner is suitable, and there are public places and restaurants on the platform you choose, which should be good for the United States.

If you need water-cooled frequency conversion, then there are generally special requirements in this case, and you generally need water-cooled in this case. Buy the most professional brand, and who can convert the frequency, you now take a look at Dong Mingzhu in our country, and the brand they recommend is very good. Kilometer.

It is really difficult to choose many brands, and if you don't know about this product, it is recommended that you go to ** to search for his inverter, and then you can ask their customer service staff according to the detailed introduction, and everyone will answer patiently for you.

a. Screw chiller.

Pros:1The structure is simple, there are few moving parts, few wearing parts, only 1 10 of the piston type, the failure rate is low, and the life is long 2Circular motion.

Smooth, no "surge" during low-load operation.

phenomenon, low noise, low vibration 3Compression ratio.

It can be as high as 20 and the EER value is 4It is easy to adjust, and can be steplessly adjusted in the range of 10% and 100%, with high efficiency and significant power saving at partial loadSmall size, light weight, can be made into a single fully enclosed large-capacity unit 6on wet strokes.

Insensitive 7It is a positive pressure operation, and there is no problem of external gas intrusion and corrosion.

b. Centrifugal chiller.

Pros:1The impeller speed is high, the gas transmission capacity is large, and the capacity of the single machine is 2Few wearing parts, reliable work, compact structure, stable operation, low vibration and low noiseThe weight index per unit of cooling capacity is 4Refrigerants.

It is not mixed with lubricating oil, evaporator.

The heat transfer performance of the condenser is good, the theoretical value is easy to adjust, and it can be adjusted steplessly within 10% and 100%.

c. Piston chiller.

Pros:1The material is simple, the requirements are not high, the national standard can be adopted, the processing is easy, and the cost is lowThe system device is simple, lubrication is easy, and there is no need for exhaust device3With multiple heads, high speed and multiple cylinders, the performance can be improved.

d. Ground source heat pump unit.

1.Save energy, when operating in winter, can **.

Heat, when running in the summer, can be cooled. 2.It can be said that it is a multi-functional chiller, or air conditioner, which can be heated and cooled, and can be multi-purpose in the design, production and office dual-use.

3.Easy to measure4Easy to install, low maintenance cost 5

Flexible application, convenient adjustment, energy saving and environmental protection. 6. Automatic LCD touch screen, start-up can be set to the year, month, day, hour and minute, automatic start-up, high power-saving efficiency. 7 can be said to be a chiller and air conditioning unit.

One of the fighters.

f. Air-cooled chiller.

The air-cooled chiller adopts the air cooling method, which eliminates the cooling tower, cooling water pump and pipeline system that are indispensable for the cooling water system, avoids the condenser scaling and water pipe blockage caused by poor water quality, and also saves water resources.

The one-time investment of air-cooled chillers is slightly higher than that of water-cooled chillers, but the annual operating cost is lower than that of water-cooled chillers, and the construction cost of the machine room is the least in various air-conditioning cold and heat source systems, and the maintenance cost is about half of the cost of water-cooled or boiler.

1. Frequency conversion and energy saving.

The energy saving of the inverter is mainly manifested in the application of fans and pumps. In order to ensure the reliability of production, all kinds of production machinery are designed with power drive, and there is a certain amount of surplus. When the motor cannot run at full load, in addition to meeting the requirements of power drive, the excess torque increases the consumption of active power, resulting in a waste of electric energy.

The traditional speed regulation method of fans, pumps and other equipment is to adjust the air supply volume and water supply by adjusting the baffle plate and valve opening of the inlet or outlet, and its input power is large, and a large amount of energy is consumed in the interception process of the baffle and valve. When using inverter speed regulation, if the flow requirement is reduced, the speed of the pump or fan can be reduced to meet the requirements.

2. Power factor compensation energy saving reactive power not only increases the line loss and the heating of the equipment, but also reduces the power factor to reduce the active power of the power grid, a large number of reactive energy consumption in the first road, the equipment is inefficient, the waste is serious, after the use of frequency conversion speed regulation device, due to the effect of the internal filter capacitor of the frequency converter, the reactive power loss is reduced, and the active power of the power grid is increased.

The refrigeration is fast, silent, and the duration is very good, the frequency conversion chiller is relatively powerful compared to the fixed frequency chiller, and the efficiency of use is also very good, but it may be relatively higher.

The characteristics of the inverter chiller are that the refrigeration required by the corresponding environment is carried out according to different seasons or time periods, which is not only energy-saving and power-saving, but also has high efficiency and is very easy to use.

First of all, we need to know that the internal components of the inverter are cooled by pure water, which brings heat to the water-cooled heat exchanger E1, and then takes away the heat by the external circulating cooling water. The cooling of the air inside the inverter is forced by the fan to circulate the air, and the temperature of the internal air is reduced by the air-cooled heat exchanger E2, and the heat is taken away by the circulating cooling water pants.

The water pump M11 circulates purified water at a flow rate of 130 litres per minute. The deionization tank C1 is used to reduce the electrical conductivity of pure water, and the alarm value of the conductivity of pure water is. The alarm value of the pure water temperature is 39 when the inverter is running, and the temperature is kept at about 32 during normal operation.

The function of the three-way valve is to keep the temperature of the pure water at 32 by adjusting the circulating water flow through the water-cooled heat exchanger E1, and at the same time keep the total flow of circulating water unchanged.

A frequency converter water cooling system is a system that uses water to cool an inverter. Here's how it works:

1.The water pump lifts the cooling water from the tank into the radiator of the drive.

2.The cooling water is heat exchanged with the heat generated inside the inverter in the radiator, which takes the heat away and reduces the temperature of the inverter.

3.The cooling water flows out of the radiator and returns to the tank through the rotten foundation of the water pipe, forming a circulation.

4.During the water circulation, the inverter water cooling system will automatically adjust the flow rate and water temperature of the water pump according to the temperature of the inverter to ensure that the temperature of the inverter is always within a safe range.

It should be noted that the operation of the inverter water cooling system needs to ensure the purity of the water quality and the stability of the flow rate. If the water quality is not pure or the flow rate is unstable, it will affect the heat dissipation effect of the inverter, and may even lead to the failure of the inverter. Therefore, when using the inverter water cooling system, it is necessary to regularly inspect and maintain the water pump, radiator, water pipe and other equipment to keep it in normal operation and good condition.

At the same time, it is also necessary to pay attention to the purification of water quality and the stability of flow to ensure the normal operation and reliability of the inverter water cooling system.

Principle of water cooling system.

During the operation of the stationary inverter, the thyristor generates a large amount of heat, which can be efficiently and quickly brought out through the water cooling heat dissipation method, and the water cooling system contains two circuits: internal circulation and external circulation.

In the internal circulation circuit, the main circulation pump provides the appropriate pressure to allow the cooling medium to flow through the thyristor heat dissipation device and remove the heat from the thyristor. After the plate heat exchanger, the heat from the cooling medium in the inner circulation circuit is transferred to the cooling medium in the outer circulation circuit. The temperature of the cooling medium in the internal circulation loop decreases and flows again into the thyristor radiator, forming a closed cycle.

In the external circulation circuit, the heat of the plate heat exchanger is returned to the water source of the pumping and storage power station through the cooling medium. In addition, in order to ensure the stability of the cooling system capacity, protect the cooling pipeline of the stationary inverter and meet the requirements of electrical operation, filters, deionization branches, and voltage stabilization branches need to be added to the internal and external circulation circuits to improve the quality of the cooling medium.

One of the refrigeration processes of chillers is heat conversion, heat exchange, the essence of which is to use machinery to operate in different heat exchangers to produce chilled water. 1. Monitoring the operating status of the system 1, air-cooled chiller, water-cooled chiller, screw chiller, low-temperature chiller and other operating parameters: such as their operating status, overload alarm, compressor motor current and the load of the chiller, etc.; 2. Chilled water flow, supply and return temperature, pressure difference between supply and return, cooling water supply and return temperature.

3. The operating state and actual water flow state of the chilled water and cooling water switch valves. 4. The operation status, overload alarm and actual water flow status of chilled water, cooling water pump and on/off valve. 5. The operating status of each fan of the cooling tower, overload alarm, liquid level, water temperature, pressure, etc.

6. The opening of the regulating valve. 2. Automatically open and close the chiller, water pump, cooling tower and the corresponding on-off valve according to the sequence of program control, and can also be remotely operated by the operator to start and stop or switch each equipment through the computer, and the automatic remote mode can be switched. 3. According to the pre-set schedule, the chiller, water pump and related equipment will be automatically turned on or off in sequence.

4. Automatically adjust the chilled water differential pressure bypass valve according to the pressure difference between the chilled water supply and the return water. 5. Calculate the number of chillers that should be started in the actual operating state according to the flow rate of chilled water and the temperature of supply and return. 6. Accumulate the operating time of each equipment, list maintenance and repair reports, all parameters and status LED or Chinese LCD display, etc.

The engineering scheme should be selected: 1. The boiling point of the traditional refrigerant is: below -30 (the boiling point of the refrigerant R22:

It is not easy to do a good job of temperature control with a circuit, and it is difficult to achieve "control at about 30 degrees"; Temperature control needs to be professionally designed (requirements refer to air conditioning) 2, or develop new refrigerants that meet the requirements of the system, at least at the boiling point, safety (electricity, fire), to meet the requirements of the system; 3. Alarm and control systems are required for safety; 4. The coldest part of the traditional primary circuit water cooling system is the CPU, the temperature difference is not well controlled, condensation and frost, and the system is in danger of short circuit;

Although the high-voltage variable frequency speed regulation system is a very efficient speed regulating device, there is still about 2%-4% loss in operation, which is turned into heat and eventually dissipated in the atmosphere. How to smoothly bring this heat out of the inverter is a very important issue in the design of the inverter.

The heating components of the high-voltage inverter are mainly two parts: one is the rectifier transformer, and the other is the power element. The way the power components dissipate heat is key.

Modern frequency converters are generally air-cooled or water-cooled. When the power is low, air cooling is sufficient. When the power is larger, it is necessary to pass water in the radiator and use the water flow to take away the heat, because the radiator generally has different potentials, so it is necessary to use water with good dielectric strength, generally pure water, which is lower than the ion content of ordinary distilled water.

In the circulation system of the waterway, an ionic resin exchanger is generally added, because the metal ions on the radiator will continue to dissolve into the water, and these ions need to be adsorbed and removed.

It should be said that from the point of view of heat dissipation, water cooling is very ideal. However, the water circulation system process is demanding, the installation is complex, the maintenance workload is large, and once the water leaks, it will bring potential safety hazards. Therefore, when air cooling can be used to solve the problem, do not use water cooling.

After all, there is a limit to the amount of heat dissipation that air cooling can solve, and this limit is related to the category of technology. For example, the ACS1000 series three-level inverter stipulates that water cooling must be used for more than 2000kW, while Robinkang and AB Company in the United States still use air cooling for 3200kW 6KV inverter. Why?

It turns out that the heat that air cooling can bring out of the device is related to the size of the effective heat dissipation area, and the larger the heat dissipation area, the more heat can be taken away. The greater the number of components, the larger the area for heat dissipation, and the better the effect of air cooling. For the 6kV inverter, the number of inverter devices is more than that of the 3kV inverter, and the current of a single device is small, so it can have a large heat dissipation area, which is equivalent to the equal sharing of heat.