Shanghai Xinhu Motor Factory Co., Ltd. as a professional manufacturer of shielded electric pumps in China, founded in 1956, has a long history, is the national shielded electric pumps, shielded electric motors, the drafting of the industry standard unit.Over the past 50 years, the Shanghai Xinhu in accordance with the market's current and potential demand for continuous research and development of new products, shielded pumps products The products of shielded pumps rank first in China. Shanghai Xinhu adopts advanced technology, equipment, process, testing methods and management, and has 25 series and thousands of specifications of shielded electric pumps, which have successfully solved the problem of leakage in fluid transportation, and are widely used in petroleum, chemical, refrigeration, air-conditioning, national defense, nuclear industry and other fields, and is the largest manufacturer of shielded electric pumps in China. Product use: domestic hot water circulation, cooler and air-conditioning system of liquid circulation. Water heater pressurization. Solar energy. Heating system. . Floor heating pressurized circulation. Temperature regulation, etc.
1. Adopting domestic advanced hydraulic model, high efficiency, good vapor corrosion resistance.
My company's hydraulic model impeller outlet angle of about 28 ° ~ 35 ° (the hydraulic model, blade outlet angle of 22.5 °, the efficiency is generally lower.) The same flow rate and head, reducing the outer diameter of the impeller, reducing the loss of disc, so that the pump efficiency is generally improved, higher than the efficiency of foreign enterprises about 5% ~ 8%. My company for the military submarine production of a Q: 75m3 / h, H: 30m pump, pump efficiency of 72%, while the Dalian company pump efficiency of 63%.
2. Automatic balancing structure
The automatic balancing structure of shaft thrust is adopted, i.e., when the pump is in normal operation, the front and rear bearing end surfaces do not contact with the thrust disk, and they only bear very small axial force at the moment of pump starting and stopping, which prolongs the life of the bearings greatly.
3. Using the latest design of high-efficiency motor mold, high motor efficiency, high power factor, less heat.
Adopting the motor optimization design method, the efficiency of the motor is generally between 75%~80%, and the temperature rise of the motor under full load is about 20~30 K. The motor production adopts the vacuum dipping paint and low pressure vacuum drying technology, which improves the insulation performance of the motor, and prolongs the service life of the motor.
4. The motor rotors are all stacked with slanting grooves, which is conducive to reducing electromagnetic vibration and electromagnetic noise.
And other companies use straight groove stacking process is convenient, but electromagnetic vibration, noise, I made the electric pump by the authoritative research institute to detect vibration acceleration in the 120 dB below.
5. Bearing monitor adopts the latest type design, frequency conversion and industrial frequency module is unified.
In the two power supply conditions can be used interchangeably. Higher sensitivity and reliability.
6. The working flow rate of the pump ranges from 30% to 120% of the rated flow rate.
All of our pumps adopt auto-balancing structure, when the flow rate changes, the gap between the impeller back cover plate and front bearing seat changes, automatically adjusting the axial force, so that the rotor is always in suspension, greatly improving the bearing service life, and expanding the working range of the pump, so that the pump operation is more reliable.
7. Pump vibration noise is lower.
Because the impeller adopts automatic balancing structure, and the rotor component dynamic balancing precision is as high as G2.5 level, so the pump vibration value in the working process is extremely small, small pumps up to 2.8mm/s or less, large pumps up to 4.5mm/s or less.
8. Complete range of pumps.
In conventional pumps based on the increase in some of the flow conditions of the pump, vortex pumps, double suction pumps to meet the requirements of the flow conditions as small as 0.5m3 / h, as large as 900m3 / h. The maximum head of 500 meters, the highest use of pumps. The maximum head of 500 meters, the maximum operating temperature of 450 degrees, the minimum operating temperature -100 degrees, the maximum design pressure of 60 kg, the maximum power of 160 kW.
Optimize the product structure, make the product structure design more reasonable.
For reverse circulation pumps conveying easily vaporized media, our company adopts the way of drilling holes in the shaft and pressurizing the rear secondary impeller to avoid vaporization of the circulating media in the motor, reduce the tail reverse circulation pipe, and simplify the on-site piping.
For high-temperature type pumps, the structure of detachable water jacket and detachable heat exchanger is adopted, which is convenient for maintenance and descaling.
For the basic pump, the internal structure adopts the self-exhaust structure (the exhaust valve can be canceled according to the need), which avoids the pollution of the environment and the injury of the operator by the toxic and harmful gases during the exhaust.
For the self-priming type pumps, the new injection structure is adopted to greatly improve the self-priming performance.
10. Material
Main material: pump body, impeller, front and rear end caps, shafts, motor flange, etc. Selection of corrosion resistance and welding performance of stainless steel;
Shielding: stator and rotor shielding sleeve selection of corrosion resistance, welding performance of the best HASTELLOY-C, the material imported from the United States;
Bearings, bushing, thrust discs with superior overall performance of silicon carbide. Silicon Carbide (SiC) with excellent comprehensive performance, and its purity is more than 99%;
Motor Insulation Grade: In order to improve the insulation aging performance of the motor, the H grade with higher temperature resistance is selected;
11. Safety and Protective Measures
Explosion-proof Structure (Standard Configurations)
XinHu's standard structure is of the explosion-proof type, and it has already obtained various certificates of conformity, and can be supplied with dⅡBT1～T4 ,
dⅡCT1～T4, protection grade IP54 of various models of products.
Temperature protection
Shanghai Xinhu standard configuration adopts thermocouple temperature protector, buried in the stator winding, directly on the stator winding protection, the protection temperature of the H-class insulation is set at 180 ℃
HPB bearing monitor (standard configuration)
No need to dismantle the machine to accurately grasp the shielded electric pump operation from the outside. hpb table Labeled with three areas: namely, green, yellow and red, the green area indicates normal operation; the yellow area indicates the need for maintenance; the red area indicates that there has been a failure and must be dismantled for maintenance, through which the operator is told how to take measures in an intuitive way.
HPB table also has a reverse phase and phase missing operation protection.
Idle protector (optional)
An optional idle protector is also available on request to prevent liquid evacuation.
12. Adoption of standards
Flange standards: GB, ANSI, ASME, DIN, HG, etc.
Manufacturing standards can be used ISO15783-2002
Part of the use of API610, API685, etc.
13. Quality Assurance
Shanghai Xinhu has obtained ISO9001, ISO14001, CE certification, with a perfect quality assurance system, parts processing with traceability. All materials are supplied by qualified subcontractors, and complete material certificates can be provided, and materials can also be re-checked according to customers' requirements.
At present, our products are widely used in various industrial fields, including heating and air-conditioning systems of Zhongnanhai and the State Council and other organs of the central government in China, Changsha Yuanda Air Conditioning Company, Zhejiang Lianfeng Refrigeration Machine Company, Qingdao LS Lexing Air Conditioning Company, Carrier China Yichen Plant, Morita Chemical (Zhangjiagang) Co. Ltd, Anhui Fengyuan Group, Henan Luoyang Silicon Hi-Tech Co., Henan Zhengzhou Thermal Power Company, Henan Zhongyuan Environmental Protection Company, Xinxiang Thermal Power Company, Zhejiang Xuchuan Resin Co., Ltd. and exported to Pakistan, Iran, India and Southeast Asian countries. 2008 the company's high-tech products, PB-type shielding pumps were selected by the Shanghai Qiyao Power Technology Co. Successfully open up a new field of shielding electric pump of our company.