The test bench is designed to conduct acceptance tests of discrete and proportional hydraulic equipment in accordance with GOST 20245-74 (Hydraulic equipment. Acceptance rules and test methods) and GOST 28971-91 (Hydraulic drive. Servomotors. Test methods).
The stand allows testing devices of various types:
- by installation type: butt and pipe type
- by control type: discrete, proportional, and servo control
- by the design of the control part: with built-in and external electronics
The stand for testing hydraulic equipment consists of the following main elements:
- test bench with a mounting plate, measuring and regulating instruments
- pump station
- heat exchanger
- control cabinet for the pump station (electrical power)
- control panel for the pump station
- control panel for the test bench
- computer with software
- connecting electrical cables and hydraulic hoses
- set of adapter plates for butt-mounted hydraulic equipment
DESCRIPTION OF ELECTRICAL EQUIPMENT AND SOFTWARE OF THE TEST BENCH
The purpose of the software when working with the electrical equipment of the test bench:
- processing signals from sensors on the bench and the pump station
- visualizing measurement results on the monitor screen
- controlling the electrical equipment of the stand and the pump station (relay, light indication) according to the algorithm
- controlling the process of testing hydraulic devices (setting control signals)
- displaying documentation on the monitor regarding hydraulic equipment testing (connection diagrams)
- archiving data during testing on the bench
The pump station control algorithm allows:
- monitoring pump station parameters (oil level, temperature, etc.)
- monitoring the condition of the electrical part (main pump drive)
- issuing a signal for work permission or emergency shutdown of the pump station with appropriate light indication
Parameters checked during tests on the bench for discrete equipment:
- functioning
- internal and external tightness
- pressure adjustment dependency on flow rate
- smooth regulation and adjustment range
- change in reduced pressure when changing inlet pressure and flow rate
- fluid flow through the control valve
- flow dependency on the pressure difference at the inlet and outlet
Parameters checked during tests on the bench for proportional equipment:
- functioning
- internal and external tightness
- pressure gain factor
- zero offset
- flow gain factor
- hysteresis and polarity
BRIEF LIST OF HYDRAULIC DEVICES THAT CAN BE TESTED ON THE BENCH
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Device Name
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Model
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Manufacturer
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1. Discrete Distributors:
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Hydraulic distributor
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4WE6J6X/EG24N9K4B06
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Rexroth
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Hydraulic distributor
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4WEH16J7X/6EG24N9S2K4
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Rexroth
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Hydraulic distributor
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VE 6.44.31/
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"Hydroapparat"
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2. Proportional Distributors and Servo Valves:
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Servo distributor
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4WSE3EE16-1X/300B8-315K9EVSO3
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Proportional Distributor
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4WRDE16V125L-5x/6L15Z9/M-280
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Rexroth
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Proportional Reduction Valve
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3DRЕ16P6X/200YG24K6VE1-3
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(missing manufacturer)
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3. Pressure Control Devices:
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Direct Acting Relief Valve
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DBDS20K1X/315
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Rexroth
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Reduction Valve
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DR30-5-5X\200Y
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Rexroth
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Pump Protection Block
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DBAW16BF2-2X315EG24N9K4A08
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Rexroth
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Protection Shut-Off Block
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SAF10M12T210A-S13
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HYDAC
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Brake Valve
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FD16PA2X/B03V
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Rexroth
|
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Brake Release Valve
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SB17G12
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HAWE
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Relief Valve
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MKPV-32/3S3V
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"GSKTB GA"
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Reduction Valve
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MKRV-32/3S2R
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Hydrodrive Plant
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4. Check Valves, Hydraulic Locks, and Throttles:
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Hydraulic Lock
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SL52PA1-1x/
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Rexroth
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Modular Throttle Plate
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Z2FS10-5-3 X\V
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Rexroth
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Embedded Check Valve
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M-SR30KE05-1x/
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Rexroth
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Throttle
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MG30G1X\V
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Rexroth
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Check Valve
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1MKO 32/32
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JSC "Hydraulic"
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5. Control and Measuring Instruments:
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Pressure Relay
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HED3OA3X/200Z6L24
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Rexroth
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Pressure Transmitter
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P20V-200bar
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RPM
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Pressure Relay
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EDS1691-P-C-200-000
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HYDAC
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