Guangzhou Baowa Electronic Technology Co., Ltd. is a high-tech enterprise integrating R&D, production and sales of inverters and intelligent energy-saving products. As an energy-saving expert, the company focuses on the development of high-quality, safe and reliable inverters in response to the actual application needs of China's transmission energy-saving. It has many frequency conversion energy-saving experts who have been dedicated to the development of inverter software and hardware for more than ten years. The company has invested in the introduction of cutting-edge German Mature frequency conversion control technology and various types of sophisticated high-tech testing equipment have successfully developed multiple varieties, series and specifications of low-voltage frequency converter energy-saving products. The application range covers petrochemicals, steel, cement, oil fields, chemicals, textiles, papermaking, tobacco, wine, beverages, environmental protection equipment, water supply, machinery, and mines. and many other industries. Baowa introduces a quality management system to implement standardized management of the company's product design, production and services. Through technical resource sharing, exchanges, and industrial development cooperation with well-known electrical company research institutes at home and abroad, we track the most advanced frequency conversion technology in the world, gradually realize the research and development level and industrialization and international standards, and create an integrated industry in the field of frequency conversion energy saving. A business platform that integrates technological innovation, technology industrialization, service and marketization.
The company combines many years of experience in the promotion and application of energy-saving inverters and adopts the latest technology and devices in power electronic control to develop and produce inverter energy-saving products. It has reliable performance, stable operation, complete protection functions, super overload capacity and impact resistance. The load has good current suppression application characteristics and is widely used in energy-saving transformation in the power electronics and transmission industries at home and abroad. The product's excellent energy-saving control function and high return on investment have won the trust and support of the majority of users. Baowa has emerged as a leader in the field of frequency conversion energy saving with its professional manufacturing and mature technology, and its development scale has expanded year by year!
Fan/water pump energy-saving control cabinet
Product Overview
With the rapid development of my country's modernization construction, although the power supply has been greatly improved, the waste of energy is quite alarming. According to relevant statistics, my country's wind turbines and water pumps have an installed capacity of approximately more than 100 million kilowatts, and their electricity consumption accounts for approximately % of the country's total electricity consumption. Due to the characteristics of the working mechanism of the fan and water pump, the working motor always runs at a constant speed, and the flow of wind and water during work is often required to operate under variable working conditions. When many units are designing the system, the capacity design is too large and the system matching is unreasonable. Often large horses and small carts are used, resulting in the operating efficiency of the fans and water pumps being only %. This not only has high operating costs, but also wastes precious electrical energy. Therefore, doing a good job in energy conservation of fans and pumps is of great significance to the development of the national economy.
Dr. Baowa's fan/pump energy-saving control cabinet combines the working characteristics of the fan and pump, adjusts the input frequency of the fan and pump motor according to the requirements of the production process, changes the motor speed, and reasonably adjusts the gas and liquid flow rate and pressure according to the needs of the production process. It replaces the backward method of adjusting the opening degree of the fan windshield or the water pump valve to achieve the dual purpose of optimizing the production process and saving %% of electricity.
Product Features
Excellent soft start and soft stop functions, reduce the starting current of the motor, reduce the impact of the inrush current on the power grid, protect the motor and prevent the water hammer effect of the water pump
Optimize the production process to make The gas and liquid flow rate and pressure are more reasonable. The system adopts closed-loop control. The parameter overshoot fluctuation range is small. Acceleration and deceleration can be automatically adjusted according to process requirements
Very sensitive fault detection and diagnosis digital display function improves the reliability of motor operation
Users can choose with or without power saving/mains switching, easy to operate
Has remote automation control R interface, which can be used for remote control
Has complete protection functions such as short circuit, overload and overheating
Good power saving effect, depending on the on-site process requirements, the power saving rate is %%.
Scope of application
This product is widely used in centrifugal fans in industrial enterprises and occasions such as industrial heating boilers, cement plants, furnaces, coal mines, metallurgical industries, blast furnaces, converters, fertilizer plants, pharmaceutical plants, sewage treatment plants, oil fields, petrochemical plants, tap water supply companies, etc. Frequency control of axial flow fans, Roots blowers, air compressors, centrifugal pumps, submersible pumps, circulating pumps, oil pumps, high-pressure water injection pumps and other equipment.
Central air-conditioning power saving device
Current status of power consumption of central air-conditioning systems
Generally speaking, the maximum load capacity of the central air-conditioning system is designed according to the conditions of the hottest weather and the largest load. There are There is a large margin, but in fact the system rarely works under these extreme conditions. According to relevant statistics, air conditioning equipment operates % of the time fluctuating below % load, so the actual load cannot always reach full load, especially when the demand for air conditioning is small. When the load of the main engine is low, in order to ensure better operating conditions and higher operating efficiency, the main engine can be loaded or unloaded within a certain range according to changes in load, but the matching cooling water pumps and chilled water pumps are still Operating under high load conditions will bring about the following series of problems: Excessive water flow will reduce the temperature difference between the inlet and return water of the cold water system, worsening the working conditions of the host, causing the heat exchange efficiency of the host to decrease, and causing serious waste of power.
When the water pump pressure is too high, the flow of cooling water and chilled water is usually adjusted by adjusting the opening of the valve on the pipeline, so there is a large energy loss on the valve.
Since the central air-conditioning cooling water chilled water system has low operating efficiency, large energy consumption and long-term operation, it is completely necessary to carry out energy-saving technical transformation.
The power-saving principle of central air-conditioning to adjust the speed of refrigeration/cooling pumps
Using AC frequency conversion technology to control the operation of refrigeration/cooling pumps is one of the effective ways to transform the energy-saving transformation of central air-conditioning systems at present.
The load power of the pump is proportional to the power of the rotational speed, that is, where is the power and is the rotational speed. It can be seen that the economic benefits of using variable frequency speed regulation to reduce the flow of the water pump are very significant. When the required flow rate is reduced, the water pump When the speed decreases, the required power of the motor decreases by the cube of the speed. For example:
When the water pump flow rate drops by % (the tracking output frequency is)
Then the motor shaft power is the power saving rate
B When the water pump flow rate drops by % (the tracking output frequency is)
Then the motor shaft power is the power saving rate %
When the chiller load decreases, the required water flow rate decreases. The motor speed regulating device reduces the pump speed to reduce the water flow rate, and the pump shaft power decreases accordingly. The input power of the electric motor is also reduced. When the cooling capacity increases, the chiller load increases, the temperature difference between the inlet and outlet water of the condenser increases, the frequency converter operating frequency increases, the water pump speed increases, and the water flow rate increases, thereby maintaining a constant temperature difference. vice versa. So as to achieve the ideal energy saving effect.
Principle of power-saving control
Dr. Baowa's frequency conversion central controller reads the return water temperature and outlet water temperature of the freezing/cooling pump into the memory through the temperature module and temperature sensor, and calculates the temperature difference value and then calculates the temperature difference according to the temperature difference. The value is used to control the speed of the inverter, adjust the flow of water, and control the speed of heat exchange. A large temperature difference indicates that the indoor temperature is high. The speed of the freezing/cooling pump should be increased, the circulation speed and flow of the freezing/cooling water should be accelerated, and the heat exchange should be accelerated. On the contrary, if the temperature difference is small, it means that the indoor temperature is low, which can reduce the rotation speed of the freezing/cooling pump, slow down the circulation speed and flow rate of the freezing/cooling water, slow down the speed of heat exchange to save power, change and monitor the start-stop operating frequency of the inverter Display data such as inverter output power, inverter output frequency, output current, output voltage, etc. are all realized by the frequency conversion central controller through communication protocols.
Energy-saving control process
The upper limit frequency of the frequency converter is set to, and the lower limit frequency of the frequency converter is (depending on the site conditions). During automatic control, the control curve in Figure 1 is followed, combined with advanced intelligent fuzzy Control Technology.
When the temperature difference is ℃, the frequency converter will run at the frequency. As the indoor temperature continues to increase, the temperature of the freezing/cooling return water will also continue to rise. The operating frequency of the frequency converter will also automatically increase as the temperature difference increases. Rise
When the temperature difference is ℃, the frequency converter will run at the frequency. At this time, the frequency converter can no longer meet the control requirements and needs to start the freezing/cooling pump (the first pump). After the startup process is completed, jointly adjust the chilled water flow, control the speed of heat exchange, and achieve constant temperature difference control between the outlet water and the return water
When the temperature difference continues to rise and reaches ℃, the freezing/cooling pump must be started for power frequency operation to jointly adjust the freezing/cooling water flow rate. Flow, control the speed of heat exchange, and realize constant temperature difference control between the outlet water and the return water
If the temperature difference drops to ~℃, the pump can be shut down and the frequency converter can be kept to run automatically to achieve maximum energy saving. .
After the freezing/cooling pump is running, the control system will automatically send an operation permission signal to the host, thereby ensuring that there will be no danger of pipe freezing when the host is started and running, thus ensuring that the frequency conversion energy-saving part can cooperate well. operation of the entire central air conditioning system.
Features of energy-saving equipment
The frequency conversion system adopts the best excitation control method to optimally adjust the excitation current, so that the efficiency of the motor can be greatly improved and further achieve high efficiency and energy saving
Equipped with a touch screen human-machine interface, simple operation and control, and intuitive display of various data
Equipped with a programmable controller R communication module, automatic power saving/bypass switching, easy to operate
Built-in instantaneous power failure restart function and restart function Trial start function, fully automated operation without supervision
Realizing soft stop and soft start of the water pump, which can completely eliminate the water hammer effect of the network pipe
The pressure difference in the pipeline can be adjusted at any time to ensure Within the appropriate range
With reasonable operation, the service life of the motor water pump coupling will be greatly improved
The power saving rate of refrigeration and cooling pumps is above %, or even up to %.
Scope of application
Various types of central air conditioners, refrigeration pumps, cooling pumps, cooling tower fans, air supply fans, etc.
Injection molding machine power-saving control cabinet
Overview
In the plastic industry, injection molding machines and blow molding machines are the main production equipment, which consume a lot of power and waste electricity very seriously. How to reduce the power consumption of injection molding machines has become an important research topic for many plastic companies.
The working process of the injection molding machine is divided into several stages such as mold clamping, sol injection, pressure maintaining, cooling, mold opening and ejection. The working pressure and flow rate required at each stage are different, and there are certain regular changes. The hydraulic oil flow and pressure provided by the injection molding machine oil pump is constant, but the actual flow and pressure are less than the constant flow and pressure of the oil pump most of the time during the operation of the injection molding machine. Excess hydraulic oil flows back to the oil storage tank through the relief valve, which not only causes the temperature of the hydraulic oil to rise, but also wastes a large amount of electrical energy, especially the cooling process.
Working Principle
Based on the process characteristics of injection molding machines, blow molding machines and other equipment in the plastic industry, Dr. Baowa's injection molding machine energy-saving control cabinet automatically adjusts the oil pump motor by collecting the flow and pressure control change signals of the injection molding machine. The speed is adjusted to adjust the oil supply amount of the oil pump so that the actual oil supply amount of the oil pump and the actual load of the injection molding machine remain consistent during any working process. The phenomenon of overflow and hydraulic oil heating has been completely eliminated, and the injection molding machine has been changed from a fixed pump to a variable pump. This allows the injection molding machine to extend the service life of the pipeline and greatly save oil pumps without affecting production output and quality. The electrical energy consumption of the motor.
Product Features
Using variable frequency microcomputer control technology, there is no need to change the control method and oil circuit of the existing injection molding machine
Excellent soft start and soft stop functions
Automatic fault bypass, saving Electricity/bypass switching at will
Save oil and cooling water consumption of the oil pump, extend the life of the oil pump and pipelines
High power saving rate, so that the power saving rate of the oil pump motor reaches %%.
Ball mill power-saving control cabinet
Overview
Ball mill is an indispensable equipment in the cement industry, ceramic industry, mining industry and mineral processing industry. It is also the equipment with the largest power consumption in these three industries. Its electricity consumption accounts for approximately %% of the entire production electricity. How to reduce the power consumption of ball mills without affecting production quality and output has always been a matter of great concern to investors in these three industries. Energy-saving transformation of ball mills is of great significance to reducing production costs and increasing profits in these three industries.
Working Principle
In the cement industry, ceramic industry, mining and mineral processing industry, the ore is first crushed by the crusher, and then sent to the first chamber of the ball mill after being crushed to a reasonable fineness. There are steps in this chamber The lining board or corrugated lining board contains steel balls of different specifications. When the cylinder rotates, the steel balls are brought to a certain height due to centrifugal force and then fall down, pounding and grinding the materials in the warehouse. In this way, the large pieces of material complete the first step of rough grinding in the first warehouse. The coarsely ground materials enter the second warehouse through the single-layer partition board. This warehouse is equipped with a flat lining plate and there are many steel balls inside. The materials will be further ground here, and this step is called fine grinding. After these two steps of operation, the original large pieces of material are basically ground into powder. Finally, the powdery material is discharged through the discharge grate plate to complete the grinding operation.
In the original grinding control system, the grinding speed and the centrifugal speed of the steel balls are constant. The grinding time is generally set based on experience. Moreover, the ball mill requires a large starting torque when starting, and the starting impulse current is large. . After a lot of experiments and research by our company's professionals, we decomposed the running trajectory and force of the steel balls, used frequency conversion technology to track and sample the entire working process of the ball mill, and developed a special energy-saving control cabinet for Dr. Baowa ball mill. The energy-saving control cabinet of Dr. Baowa ball mill uses frequency conversion to adjust the motor speed to achieve the best match between the motor's output torque and speed and the ball mill's process requirements. This not only improves the efficiency of the ball mill, but also optimizes the ball mill's performance. The production process greatly reduces the power consumption of the ball mill.
Product Features
Excellent soft start, greatly reducing the starting current of the ball mill, avoiding the occurrence of tripping under the original control method
Improving the efficiency of the ball mill and optimizing the production process
The speed of each period of grinding can be set according to the production process requirements, which is easy to operate. High power saving rate: According to different production process requirements, the power saving rate can reach %%.
Air compressor energy-saving control cabinet
Overview
As a power output device, air compressors are widely used in various industries, with power ranging from a few kilowatts to hundreds of kilowatts, and power consumption Quantity accounts for a large proportion of the entire production process.
The working process of the air compressor is: after the air compressor motor is started, the air inlet valve of its cylinder is opened and the air is compressed. When the air pressure of the cylinder and the connected air storage tank reaches the set value, the air intake The valve and the air outlet valve are closed, and the motor is in the unloading state. As the consumption of production power air consumption increases, the air pressure in the air compressor cylinder slowly decreases. When it drops to the set value (), the air compressor inlet valve and air outlet valve When turned on, the motor switches to loading state. In this way, the air compressor motor is always running alternately between unloading and loading. When the motor is in the unloaded state, the air compressor motor is doing completely useless work and the electric energy is completely wasted.
Working Principle
When the air compressor cylinder pressure reaches the upper pressure limit setting, the Dr. Paulva air compressor energy-saving control cabinet transmits this information to the control cabinet central processor through the pressure sensor, and the central processing unit The device compares the real-time air pressure and value, performs data calculation and processing, and then issues instructions to the frequency converter in the control cabinet. The frequency converter adjusts the speed of the air compressor motor according to the instructions to make the speed of the motor consistent with the compressed air required for production. Air pressure achieves optimal coordination. This can not only control the air supply pressure of the air compressor within a relatively stable range, optimize the power supply for production, but also greatly reduce the power consumption of the air compressor.
Product Features
Excellent soft-start function reduces the impact of starting the air compressor on the power grid and electrical components, extending the life of the motor
Controls the air supply pressure at the best constant position, Optimized air supply quality
Digital control, easy to operate
R communication interface and standard communication protocol, convenient equipment upgrade and operation control
Easy to switch between manual and automatic power-saving/bypass dual loops. Automatic fault bypassing, safe and reliable Start and stop
The power saving effect is significant, and the general power saving rate is %%.
Communication base station power-saving control cabinet
Current status of base station power consumption
There are nearly 10,000 communication base stations across the country, all operating hours a day. Depending on the size of the base station, the monthly electricity bill for each base station is generally For Yuanyuan. The huge electricity expenditure of the base station is mainly used for the power consumption of the cabinets and air conditioners in the base station, of which the electricity consumption of the air conditioner accounts for about % of the total electricity bill. How to carry out power-saving modifications to air conditioners is of great significance to reducing the huge electricity bills of base stations.
Depending on the size of the base station, the base station is generally equipped with two large or three-phase cabinet air conditioners. The air conditioner setting temperature is generally ℃℃. The two air conditioners switch once a quarter or so and run alternately throughout the year. No downtime. Because there are too many base stations and the range is too wide, base stations are generally unattended and the operation of base station air conditioners cannot be maintained in a timely manner.
Working Principle
In view of the current status of the operation of the existing base station air conditioners, our company independently developed the power-saving control cabinet for the Dr. Baowa communication base station. Through frequency conversion and energy-saving transformation and management optimization of the base station air conditioners, the original The fixed-frequency air conditioner was replaced by a high-precision variable frequency air conditioner. The operating speed of the air conditioner compressor was dynamically adjusted according to the timely ambient temperature. On-demand cooling was used to maintain indoor temperature stability and reduce the indoor temperature difference of the base station to within ℃. At the same time, a proprietary circuit design is used to allow one energy-saving control cabinet to control two air conditioners at the same time. The two air conditioners automatically switch within the set cycle time (recommended to be hours). This not only greatly reduces the failure rate of the air conditioners, but also reduces the cost of the air conditioners. It reduces the maintenance cost of the air conditioner and reduces the power consumption of the air conditioner to a great extent.
Technical Features
The fixed frequency air conditioner of the base station is changed to the variable frequency air conditioner mode, which keeps the temperature in the base station at a constant temperature at the set value, improving the working environment of the base station.
It fully realizes intelligent control, optimizes the control and automatic switching of base station air conditioners, reduces air conditioner failures and reduces maintenance costs.
ⅠIn spring and autumn, the temperature difference between day and night is large. The energy-saving control cabinet keeps one air conditioner running in the frequency conversion mode, and automatically switches to the other air conditioner every cycle time (such as hours). Such alternation avoids the fatigue work of any air conditioner
Ⅱ In summer, when the temperature is high and the operation of an air conditioner cannot meet the cooling requirements of the base station, the energy-saving control cabinet automatically selects the temperature according to the set upper limit temperature (such as ℃) Whether to turn on one air conditioner or two air conditioners to ensure that the temperature in the base station is constant at the set value (such as ℃
ⅢIn winter, when the indoor temperature is lower than the set lower limit (such as ℃), both are turned off at the same time. air conditioner.
R communication interface can transmit data on various operating parameters in the base station and enable future equipment upgrades.
Excellent power saving effect, the average power saving of the air conditioner is: %%.
/> Constant pressure water supply intelligent control device
Product overview and working principle
Dr. Baowa's constant pressure water supply intelligent control device is based on the original fan/water pump energy-saving control cabinet and is based on the actual operation of the water pump. , an energy-saving and intelligent control product developed and produced using fuzzy control technology. The device is composed of a closed-loop control system composed of a fuzzy controller inverter and a remote pressure gauge. This equipment can automatically adjust the speed and number of operating pumps to ensure that the water supply pipe network The pressure is maintained at the set pressure, thereby achieving the purpose of improving water supply quality and high efficiency and energy saving.
Dr. Baowa's water supply intelligent control device dynamically adjusts the speed of the water pump to meet the system pressure and flow to meet various needs. Water requirements during the period. Except for the peak hours of water supply, it runs at a very low frequency at other times of the day to achieve the purpose of substantial energy saving.
System Features
Available Realize the control of multiple water pump motors. Based on the comparison between the real-time water pressure value and the water pressure set value, select the number of water pumps to be put in, and the operating speed of the water pumps that have been put in.
It has sleep and wake-up divided pressure water supply with stable Pressure pump or attached small pump and other energy-saving operation functions to choose from
Excellent soft-start function, reducing starting impulse current and extending the life of the water pump system
For multiple pump systems, regular rotation can be performed to eliminate long-term pumping No need for rust or long-term wear and tear
Digital fuzzy control of water pressure, intelligent adjustment, fast response time, good stability
Digital panel control, digital display of operating water pressure, frequency, time and water pump working parameters
Automatic protection functions such as overvoltage, overload, overcurrent, overheating
Automatic/manual functions to ensure continuous operation of the water supply system
Excellent automatic control and power saving effect, power saving rate: %%.
Application Scope
Domestic water supply for high-rise buildings, residential areas, enterprises and institutions, industrial production water, urban tap water supply, safe drinking water in cities and rural areas, secondary water replenishment for urban heating networks, boiler water replenishment, agricultural and garden sprinkler irrigation water, fire protection voltage stabilization Sewage and wastewater treatment, large square park greening, drainage and irrigation system, oil field oil pipeline, oil depot, oil pump station, oil port constant pressure oil transportation system, etc.
Dr. Paowa PTI motor series power saver