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Pump test-bed control system classification
From: Taian Haishu Machinery Co.,Ltd. Updatetime: 2016-01-26 14:27:21 Hits:
(1) mechanical rotation speed test bench
Mechanical variable diameter pulley rotation speed test bench is used to realize fuel injection pump drive advised shaft speed stepless variable speed.The type test bench in the late '50 s started production at home, because of its simple structure, easy production, once in the fuel injection pump repair industry occupies a large market, but this type of products low transmission efficiency, narrow speed range, it is difficult to satisfy the high speed, high power diesel engine fuel injection pump commissioning, currently only a small amount of this type of test rig, mainly for tractor, engineering machinery, such as small and medium-sized power of diesel engine fuel injection pump of debugging, the products have been eliminated.
(2) the hydraulic test bench
Hydraulic variable speed drive test rig, the transmission efficiency and speed stability, generally can well meet the requirements of various types of fuel injection pump commissioning.Since the 60 s in the domestic production, is the updated products mechanical test rig.At present, in the fuel injection pump repair industry has a larger market.
Because the product is hydraulic pump drive hydraulic motor to drive shaft speed, its hydraulic components processing precision demand is higher, the structure is relatively complex, made difficult, use the maintenance more difficult, operation is not very convenient, the noise is big.Therefore, the variety of test the current in the pump oil nozzle manufacturers has been basically eliminated.
(3) slip type test bench
Slip type test bench is the domestic start batch production of products, in the late seventy s, the oil pump nozzle manufacturers have greater ownership and maintenance industry.
Basal slip clutch is generally designed by the test rig manufacturer production, and compared with ordinary three-phase asynchronous motor, there is also a part of the manufacturer is directly used motor professional manufacturer produces, slip speed regulating motor assembly on the test bench.
Such test stand is mainly characterized by simple structure, easy to maintain, use, convenient operation, high reliability, its various performance can satisfy oil pump oil nozzle production debugging and maintenance industry needs.But there is a speed control circuit performance is not stable, easy to cause defects such as speed out of control, the malfunction of equipment maintenance and operating personnel has certain risk, therefore, the product of individual manufacturer in measurement and control instrument with a preset speed protection function, so as to effectively guarantee the safety of the equipment operation.
(4) the variable-frequency test rig
Ac variable frequency speed regulation is in the eighty s to the rapid development of the mechanical and electrical technology.It is the application of microprocessor technology and high power electronic components of the motor speed control system, the output drive shaft is driven by the motor shaft directly output, smooth operation, such as the torque characteristics of the fuel injection pump provides precise speed, operation more convenient, the function is more perfect.Thus production enterprise of domestic pump test-bed or through the introduction of patent production technology products, or self-developed design, quickly develop a variety of specifications of the variable-frequency pump test-bed, make get larger to improve on technology of domestic pump test-bed.
In order to improve the function of this kind of test bench has generally increased improve the regulated power supply, air supply, additional features such as flow meter.
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