The 5th Generation Digital Integrated Frequency Adjustable Water Supply Equipment
Full parameter detection. Not only detects pressure and frequency, but also detects various flow rates, power parameters, energy efficiency parameters, etc.
Full digital control. The control system design based on main and backup dual PLC is a true full digital control.
Full frequency conversion integration Professionally tailored water pump backpack frequency converter, organically combining mechanical and electrical integration to create an intelligent “E-pump”
Full intelligent control. Integrating full parameter detection, full digital and full frequency conversion, leading the industry in professional intelligent control
The 5th Generation Digital Integrated Frequency Adjustable Water Supply Equipment
Full parameter detection
Full digital control
Fully variable frequency integration
Full intelligent control
- Features
- Model description
- Operating principle
- Product specifications and performance
High reliability
- Reliability design (long life design), the design life of core components is three times that of conventional products
- Strong grid adaptability. When the grid voltage fluctuates, the frequency converter automatically maintains a constant output voltage.
- The control cabinet is IP55, the frequency converter is IP55, and the PCBA is thickened with a thick coating, making it more dust-proof and moisture-proof.
- Dual PLC master and backup redundancy technology, the control systems are mutually backup, safe and reliable
High performance
- Full frequency conversion + high-performance digital PID, stable water supply pressure and good comfort
- Pressure + flow, power and other big data collection, minimum energy consumption and other intelligent control strategies
- Digital + early warning and alarm mechanism, expert-level remote diagnosis
- Cloud + water supply, intelligent monitoring, and zero-distance inspection of pump rooms
High energy saving
- Water pump motor configuration
Water pumps have obtained CQC energy-saving certification
- Kaiquan energy-saving technology patent
Average energy consumption, can save 20% energy
- Converter technology
Small and medium flow section. Can save 3%-5% energy.
- Standard pressure tank volume
Micro flow section can save 3% -5% energy
- Full frequency conversion control technology
Specific flow segment can save 3% -5% energy
- Import and export expansion
Energy saving can be achieved by 3% in large and medium flow sections
High quality
- High-end design of the cabinet: the structure adopts German Rittal standard design; the surface adopts trinity spraying process; effectively improving the cabinet’s corrosion resistance and high temperature resistance
- Nuclear-grade welding process level: The product has passed the nuclear power welding process assessment
- Total quality control: Passed the 1S09001 quality management system certification “Human Machine Materials Method Ring” total quality management product quality advanced planning (APOP) failure mode and effect analysis (FMEA)
- Corrosion-resistant epoxy resin coating: The inner wall coating is hygienic, environmentally friendly, and uniform
1) Frequency conversion cabinet classification: M- indicates standard configuration
2) Operation mode: QB1 means full frequency conversion (each pump is equipped with one frequency converter). All water pumps run alternately with frequency conversion and serve as backup pumps for each other.
Note: This product can be extended to KQF box-type non-negative pressure water supply equipment, etc. Please consult our company’s technical personnel for specific options.
Automatic start and stop
When the user’s water consumption increases and the equipment outlet pressure drops to the starting pressure, the equipment starts. Intelligent constant pressure operation: When there is a small flow rate at night, the equipment automatically speeds up, replenishes water and stores energy in the pressure tank and then stops automatically. The air pressure tank is shut down to maintain pressure to realize water supply in the small flow section.
Automatic speed adjustment
Intelligently adjusts the speed of the water pump unit according to changes in user water consumption. The speed automatically increases when water consumption increases, and automatically decreases when water consumption decreases. Real-time dynamic adjustment ensures constant pressure at the end of the user and comfortable water supply.
Intelligent control
The equipment has the ability to sense big data such as pressure, flow, and electricity, and adopts the lowest energy consumption control technology to intelligently control the number and speed of water springs according to changes in user water consumption, which is efficient and energy-saving.
Examples of model meanings of KQGV series complete equipment are as follows:
| Model specifications | KQGV full range of standard equipment | |
| Water supply flow | 5-300m³/h,Determined by device model | |
| Water supply pressure | 20-200mH₂O,Determined by device model | |
| Actual boost range of water pump | 40%—-100%Pump lift (full frequency control) | |
| Constant voltage accuracy | ≤1mH₂O | |
| Stable schedule | ≤5S | |
| Operation method | Main control mode, backup mode (both modes have manual operation and automatic operation) | |
| Start mode | Variable frequency pump soft start; | |
| control method | Equipment outlet constant pressure control or automatic pressure variable control (simulated terminal constant pressure control), can be set | |
| Operation mode | QB (full frequency conversion operation) | |
| Human-computer interface | Digital instrument, true color touch screen | |
| Protection/Alarm | Short circuit, overload, phase loss protection, indicator light alarm. The frequency converter has more complete self-protection | |
| Troubleshooting | Each other is a backup pump; each other is a backup control system | |
| Equipment material | The flow-passing parts (pumps, valves, tanks, pipelines) are made of food-grade 304 stainless steel, copper and rubber diaphragm materials. | |
| Protection level | Motor IP55, control cabinet IP55, frequency converter IP55 | |
| Working conditions | Installation conditions | Concrete machine base with sufficient load-bearing capacity |
| Power supply | 380V (+10%, -15%), 50HZ, should have a good ground wire, and the ground resistance should be less than 4 ohms | |
| Environment | To be installed within 0°C-40°C, no corrosive, flammable or explosive gases | |
| Relative humidity | Not more than 90% (20℃), no condensation | |
| Altitude, vibration | Altitude below 1000m, below 5.9m/s² (0.6g) | |
| If the performance parameters in the sample exceed the performance parameters, you can determine the technical solution and product selection with our company’s technical personnel. | ||
- Domestic water: high-rise buildings, residential areas, villas, etc.
- Public places: hospitals, schools, gymnasiums, airports, etc.
- Commercial buildings: hotels, office buildings, department stores, etc.
For water pumps of the same specifications, the higher the head, the better the energy saving effect.
- Actual projects are more energy-saving
Due to the imbalance of secondary water supply, the peak time of water consumption in a day is relatively short, and most of the time it is running at small and medium flow rates. The lower the constant pressure value, the unit efficiency is closer to the high-efficiency zone, and the energy saving effect is better;
- The efficiency curve shifts to the small flow section
The lower the actual constant pressure value (relative to the rated head of the water pump), the more the efficiency curve of the water pump shifts toward the direction of small flow rate;
- Lower limit of flow rate in high-efficiency area
When the water pump is running at power frequency, the lower limit of the flow rate in the high-efficiency zone is generally 60% of the rated flow rate; when the water pump is running at variable frequency, the lower limit of the flow rate in the high-efficiency zone is generally 50% of the rated flow rate; when the water pump is running at low constant pressure, the lower limit of the flow rate in the high-efficiency zone is generally 50% of the rated flow rate. 40%;
- Comparison of energy efficiency under different constant voltages
When the constant pressure value is within 60% of the rated head of the water pump, the average unit energy consumption of the equipment (or the average efficiency of the unit) is almost the same.
Same flow equipment, multi-pump configuration, better energy saving
Energy saving analysis was conducted in accordance with the experimental methods of CQC3153 “Technical Specifications for Energy Saving Certification of Secondary Water Supply Equipment” and the following conclusions were drawn:
- Using 2 for 1 standby generally saves 10% energy than 1 for 1 standby;
- Using 3 for 1 standby does not necessarily save energy than 2 for 1 standby. A detailed analysis is required.
- Using1 for1 standby + auxiliary pump has the same energy efficiency asUsing 2 for 1 standby4. The actual operating user flow rate may be small. For the same energy efficiency estimate, the actual project is more energy-saving with multi-pump configuration.
| Question | Attention when ordering |
| 1. Product technical specifications | Special technical requirements beyond the “standard product technical specifications” table must be reviewed by the technical department before ordering. (Performance parameters, power supply, altitude, temperature, humidity, etc.) |
| 2.Equipment configuration and functions | The sample standard equipment is equipped with pumps for 1 use and 1 standby, 2 uses and 1 standby, and 3 uses and 1 standby. The pump inlet and outlet valve diameters are the same as the pump outlet. The pipe diameters of the inlet and outlet main pipes of the water pump unit are considered according to the flow rate less than 1.8m/s. (Excluding standby pump flow), please refer to the relevant contents of the sample for other equipment configurations. |
| 3. Equipment usage | The standard application of the product is the domestic water supply of various buildings. Other applications must clearly define the corresponding process requirements and the corresponding scope of supply. |
| 4. Equipment structure, shipping method |
In order to facilitate the installation and layout of the pump room, various types and series of products can be structurally designed and sized according to customer requirements. The customization process is: fax customer requirements (pictures and texts) → design and drawing → customer confirmation → manufacture according to the drawing. The equipment can be supplied in parts and installed on site. The scope of supply needs to be determined separately. This form of supply does not require factory simulation operation testing and requires on-site debugging testing. |
| 5. Equipment packaging | If there are no special instructions, when the equipment leaves the factory, the pump set + control cabinet will be packed in wooden boxes. |
| 6. Pipeline safety issues | The product can withstand the static pressure test of 1.5 times the rated working pressure. The system pipelines and water appliances in the application should also be able to withstand the corresponding working pressure without being damaged. When the pump head is high, in order to prevent over pressure from bursting, the pump should be installed Install a safety valve or automatic pressure relief valve in the house and install a water diversion pipe to the water collection well. Special attention should be paid to the maximum pressure that may occur in the pipeline of non-negative pressure water supply equipment, which is equal to 1.3-1.4 times the rated head of the water pump plus 0.4Mpa (water inlet pressure). |
| 7. Sample difference problem | The product is constantly being improved, and some details of the installation dimensions and equipment provided in the sample may be different from the actual product. If you need accurate installation dimensions or other improvement information or have any questions about samples, please contact the technical department of Kaiquan Pump No. 4 Industry Branch . |
Operation and maintenance guarantee system
- Professional service team
- Able to handle various mechanical and electrical failures in a timely manner. Guaranteed by 20 years of service engineering experience
- Provide emergency service accessories
- Each service point has a spare parts warehouse to respond to the scene in a timely manner.
- Regular inspections
- During important seasons such as holidays, we can still ensure regular equipment inspections
- Reduce customer manpower support and reduce customer maintenance costs