Speed ?? technology, the motor direct output, the transmission principle is to input three-phase AC to the inverter, the inverter will be three-phase AC into a variable frequency and voltage three-phase AC, so that three-phase asynchronous motor to achieve stepless Speed advantage. The advantages of speed stability (error I disabilities), speed range (0 a 4000rpm), the output torque, over voltage, under voltage automatic protection, overload automatic protection, energy saving, easy operation, the host super Low noise, reduced load speed, etc. And BD850 fuel injection pump test bed is the first to use speed preset, improve labor productivity; speed, counting, temperature control, positive and negative pressure, The so-called full-function. With the continuous development of frequency control technology, frequency control fuel injection pump test bench in the country have the production of various manufacturers. Due to the different manufacturers choose the drive, control methods are different, test bench configuration Different, the price will be very different.So the user can not be compared in the choice of price alone, but from all aspects to consider, such as: inverter model, the function configuration Production process, pre-sale service, etc., select the best satisfied with the equipment. At present, the domestic injection pump test bench manufacturers are developing and producing screen display pump test bench, the so-called screen test bench is the test bed speed, Counting, temperature control, positive and negative pressure, pump rack and other functions through the computer screen display, and the test bed fuel pressure, flywheel scale, especially the amount of oil has not yet achieved screen display. Appeared in the country is still a high-tech projects, ongoing research has been gratifying results have been on the market screen test stand in its configuration vary widely, and the control method is n

Recently, the first load test of the high-speed pump test rig, which was built by the 11th Institute of China Aerospace Science and Technology Corporation, was a complete success. It is reported that the new test rig has extremely high performance with ultra-high speed and small torque precision test. Small thrust engine turbo pump efficiency is one of the key data for engine system adjustment calculations. A 1% pump efficiency error will result in a 5% error in system thrust. In the past, this type of turbo pump water test performance spread is large, which has a certain impact on engine performance parameter adjustment calculation. The establishment of the test bench will play an important role in accurately measuring the performance parameters of the turbo pump, and lay a firm foundation for the subsequent development of the ultra-high-speed turbo pump test.

Generally speaking, the hydraulic test bench can be divided into two types: pump test bench and valve test bench. The test bench is mainly used to test new production or maintenance of old pumps. The main experimental pressure and flow are two major items. Volume control, constant power, constant pressure and other control functions. If the test bench is not demanding, only one large motor, one set of relief valve and high pressure throttle valve can be used. The throttle valve is closed to simulate the load, and the pressure level is divided into several pressure levels, for example, every 5 MPa. , 5 minutes per level test, etc. The test results are recorded by means of a pressure gauge and a flow meter. The test bed of the ordinary reversing valve is simpler, mainly the ability of the experimental valve to operate under high pressure, and observe whether the valve has external leakage. Only a small high pressure pump is needed, one valve plate is fine. However, the testing of special proportional valves and servo valves is much more complicated. The test bench and the experimental bench are not very clear. The test bench is mainly used for new product development, and the performance is relatively perfect. The test bench is used for factory inspection and the requirements are simple and reliable.