CN107829994B - Hydraulic driving system for testing fuel injection system of marine diesel engine - Google Patents
Hydraulic driving system for testing fuel injection system of marine diesel engine Download PDFInfo
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- CN107829994B CN107829994B CN201711260618.1A CN201711260618A CN107829994B CN 107829994 B CN107829994 B CN 107829994B CN 201711260618 A CN201711260618 A CN 201711260618A CN 107829994 B CN107829994 B CN 107829994B
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- 239000000446 fuel Substances 0.000 title claims abstract description 121
- 238000002347 injection Methods 0.000 title claims abstract description 66
- 239000007924 injection Substances 0.000 title claims abstract description 66
- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 317
- 239000010687 lubricating oil Substances 0.000 claims abstract description 16
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 16
- 239000000295 fuel oil Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000002283 diesel fuel Substances 0.000 claims 2
- 238000005507 spraying Methods 0.000 claims 2
- 238000004088 simulation Methods 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 9
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000012827 research and development Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/005—With rotary or crank input
- F15B7/006—Rotary pump input
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/008—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with rotary output
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention provides a hydraulic driving system for testing a fuel injection system of a marine diesel engine, which realizes the simulation of different running power and rotating speeds of the diesel engine by controlling the torque and the rotating speed output by a driving motor through the parameterization adjustment of hydraulic output. It includes the fuel injection module that waits to detect, its characterized in that: the hydraulic control system further comprises a pump control pilot pressure oil and low-pressure lubricating oil supply module, a servo oil output control module, a servo oil reversing module, a fuel oil pressure stabilizing control module, a hydraulic motor driving control module, a weak current electric control and signal acquisition module and a strong current electric control module, wherein the fuel oil pressure stabilizing control module provides fuel oil input and fuel oil return of the fuel oil injection module, and the pump control pilot pressure oil and low-pressure lubricating oil supply module comprises an integrated control module which provides lubricating oil inlet and oil return of the fuel oil injection module.
Description
Technical Field
The invention relates to the technical field of marine diesel engine testing, in particular to a hydraulic driving system for testing a marine diesel engine fuel injection system.
Background
The existing fuel injection system of the marine diesel engine is in the complete set of import purchasing use stage at present in China, and the fuel injection system of the marine diesel engine is controlled by foreign professional production enterprises. The manufacturers for researching and developing the fuel injection system of the marine diesel engine are fewer in China, so that test research reports on the fuel injection system of the marine diesel engine are fewer, and key technologies are controlled abroad. Based on the research and development of the fuel injection system of the marine diesel engine, the hydraulic driving system for testing the fuel injection system of the marine diesel engine can simulate the actual running condition of the diesel engine, and control and real-time signal acquisition and processing are carried out on the driving rotating speed, the fuel injection quantity and the fuel injection pressure of the fuel injection system. The hydraulic driving system can meet the test performance evaluation of the marine diesel engine, and provides real-time basic data for the research and development of a fuel injection system.
Disclosure of Invention
Aiming at the problems, the invention provides a hydraulic driving system for testing a fuel injection system of a marine diesel engine, which realizes the simulation of different running powers and rotating speeds of the diesel engine by controlling the torque and the rotating speed output by a driving motor through the parameterization adjustment of hydraulic output.
The technical scheme of the hydraulic driving system for testing the fuel injection system of the marine diesel engine is as follows: it includes the fuel injection module that waits to detect, its characterized in that: the hydraulic motor servo driving control module comprises a hydraulic motor, a rotating shaft and a cam, wherein the hydraulic motor receives servo oil from the servo oil reversing module, the output end of the hydraulic motor is provided with the rotating shaft, the cam is used as a power input structure of the fuel injection module, and the weak electric control module, the electric wire, the hydraulic motor and the corresponding device are respectively connected with the servo oil reversing module, the corresponding device, the hydraulic motor and the corresponding device.
It is further characterized by:
the pump-control pilot pressure oil supply and low-pressure lubricating oil supply module comprises a servo oil tank, a motor pump group, an integrated block control structure and an oil return air cooler structure, wherein the servo oil tank is provided with two oil outlet channels, one channel is used for driving a pump to output servo oil through the motor, the other channel is used for outputting servo oil through an oil suction filter element with a one-way valve, the servo oil sucked out through the oil suction filter element is introduced into an inlet of the servo oil output control module, an oil way output through the pump is connected to an oil inlet end of the integrated block control structure, an oil return end of the integrated block control structure is provided with a pressure end and a non-pressure end, an oil pipe of the non-pressure end is directly introduced into an oil return port of the servo oil tank, an oil pipe of the pressure end is introduced into an input end of the oil return air cooler structure, an output end of the oil return air cooler structure is connected to an oil return filter of the servo oil tank, and the oil return air cooler structure is used for cooling the temperature of a medium of a system, and the hydraulic system is ensured to run in a normal temperature;
the input end of the pump is connected with an oil suction filter core, a liquid level meter and a temperature sensor are also arranged in the servo oil tank, an air cooler is arranged in the oil return air cooler structure, a correlation is formed between the temperature sensor and the air cooler, and when the temperature is higher than 60 ℃, the air cooler is instructed to work;
the integrated block control structure comprises an integrated block matrix, and an overflow valve, a one-way valve, a pressure gauge, a pressure sensor, an adjustable throttle valve, an energy accumulator, a pressure reducing valve, a 2-bit 2-way electromagnetic valve and a pressure measuring connector which are integrated on the integrated block matrix, wherein the integrated block matrix is used for realizing the installation of each valve of the principle function of a hydraulic system and the connection of a system principle oil way; the overflow valve is used for setting the working pressure of the system; the energy accumulator is used for stabilizing the pressure fluctuation of the system; the pressure gauge and the pressure sensor are used for displaying the system pressure; the pressure reducing valve is used for adjusting and controlling the pressure of the output lubricating oil; the 2-bit 2-way solenoid valve is used for controlling the rule of outputting lubricating oil;
the servo oil output control module is specifically a plunger pump proportion control module with the servo oil output pressure and flow capable of being adjusted in real time, and comprises a motor pump group, a pump proportion adjustment module and a pump digital control electronic element; the motor pump set comprises a pump body, a motor and a bell-shaped cover coupler, wherein the motor is used for driving the oil pump to work, and the bell-shaped cover coupler is used for elastically connecting the motor and the oil pump shaft, transmitting load and fixing the motor and the oil pump; the pump proportion adjusting module comprises a 3-position 4-way proportional valve, wherein the 3-position 4-way proportional valve is provided with a valve core displacement detecting sensor, a pump swing angle displacement sensor and a pump outlet pressure sensor, and realizes real-time closed-loop adjusting control on the output pressure and flow of an oil pump together with the pump digital control electronic element;
the fuel injection module comprises two groups of fuel injection structures, each group of fuel injection structure comprises a fuel pump, a high-pressure oil pipe and an oil sprayer, the power part of each fuel pump is the cam structure at the corresponding position, the fuel pump is connected to a high-pressure oil inlet of the oil sprayer through the high-pressure oil pipe, and the pressure sensor is connected to the corresponding high-pressure oil pipe; the pressure sensor is used for detecting the pressure condition of the fuel injection system during operation; the fuel inlet of each group of fuel pumps is connected with the oil outlet of the fuel pressure stabilizing control module, and the oil return port of each group of fuel pumps is connected with the oil return port of the fuel pressure stabilizing control module;
the servo oil reversing module is a servo oil pressure safety, stability and reversing module and comprises an integrated block matrix, a one-way valve, an overflow valve, a pressure gauge, an energy accumulator, a pilot type plug-in safety valve assembly, an electrohydraulic directional valve, a pressure sensor, an adjustable throttle valve and a pressure measuring connector, wherein the one-way valve, the overflow valve, the pressure gauge, the energy accumulator, the pilot type plug-in safety valve assembly, the electrohydraulic directional valve, the pressure sensor, the adjustable throttle valve and the pressure measuring connector are integrated on the integrated block matrix; the integrated block is used for realizing the installation of each valve of the hydraulic system principle function and the connection of a system principle oil circuit; the pilot type cartridge safety valve assembly consists of a 2-way cartridge valve, a 2-position 2-way power-on valve and a throttle; the 2-way cartridge valve has large flow area, and high-pressure oil in the system can be instantaneously discharged during the action, so that the safety protection effect is achieved; the 2-position 2-way electromagnetic valve is used for controlling the communication and disconnection of an oil way of a control cavity of the 2-way cartridge valve in a pilot mode, and the purpose of automatically controlling the 2-way cartridge valve is achieved; the throttle is used for establishing a pressure difference of a 2-way cartridge valve and ensuring high-pressure oil to be discharged when the electromagnetic valve acts, and the electrohydraulic directional valve is a 3-position 4-way electrohydraulic directional valve which is used for controlling the rotation direction of the hydraulic motor; the pressure sensor is used for collecting a system pressure signal and performing closed-loop control on pump input pressure;
the hydraulic motor driving control module is specifically a driving control module of a rotating shaft cam connected with a hydraulic motor, and comprises the hydraulic motor, a diaphragm coupler, a rotating speed sensor, the cam, a rotating shaft, a flywheel, a rotating speed encoder and a speed regulator, wherein two pressure oil ways of an electrohydraulic directional valve in the servo oil reversing module are respectively connected to two oil way input ports of the hydraulic motor, and a leakage oil way of the hydraulic motor is connected to a non-pressure return oil way of the servo oil reversing module;
the driving shaft of the hydraulic motor is connected to the rotating shaft through a diaphragm coupler, a detection gear is arranged on the diaphragm coupler, and the rotating speed sensor detects the driving rotating speed of the motor through the detection gear; the rotating shaft is provided with cams corresponding to the number of the fuel pumps, and the cams are used for driving the fuel pumps to work; the rotating shaft is supported by sliding bearings at two ends to rotate; the outer end of the rotating shaft is provided with a flywheel, the rotating shaft is connected with a rotating speed encoder through an elastic connector, and the rotating speed encoder is used for measuring the real-time rotating speed of the rotating shaft; the speed regulator regulates the oil inlet amount of a fuel pump of the fuel injection system through a connecting rod mechanism;
a push rod driving structure is arranged at the position, facing the outer ring surface of the cam, of the power input end of the fuel pump, and the exposed end of the push rod driving structure is closely attached to the outer peripheral surface of the corresponding cam, so that driving torque of a hydraulic motor is transmitted to the fuel pump in the fuel injection system;
the fuel pressure stabilizing control module comprises an oil supply tank, a motor pump set, an integrated block control module and an air cooler, wherein the oil supply tank comprises a temperature sensor, an oil return filter element, a liquid level meter, an oil suction filter element and an air cleaner; the motor pump group comprises an oil pump, a motor and a bell-shaped cover coupler; the integrated block control module comprises an integrated block, a one-way valve, an overflow valve, a pressure gauge, a pressure sensor, an adjustable throttle valve, an energy accumulator, a pressure measuring joint and a 2-bit 2-electromagnetic valve which are integrated on the integrated block; the integrated block is used for realizing the installation of each valve of the hydraulic system principle function and the connection of a system principle oil circuit; the overflow valve is used for setting the working pressure of the system; the energy accumulator is used for storing hydraulic energy and stabilizing system pressure; the pressure gauge and the pressure sensor are used for displaying the system pressure; the 2-bit 2-way electromagnetic valve is used for automatically controlling the pressure unloading of the system and plays a role in safety protection;
the electric control system and the signal acquisition module comprise a strong current cabinet, a weak current cabinet, electric components, a controller, a signal acquisition card, an industrial personal computer, an operation control and monitoring interface, and are used for realizing motor starting, stopping, scram control and pump closed-loop proportional control, electromagnetic valve logic control, high-speed acquisition of sensor signals in the system, displaying the sensor signals, monitoring the running state of equipment, driving the running state and running rule of the tested fuel injection system, and providing real-time test data for the research and development of the fuel injection system.
After the invention is adopted, the output pressure and flow of the servo oil can be regulated in real time, so that the torque and the rotating speed output by the driving motor are controlled, and the simulation of different running powers and rotating speeds of the diesel engine is realized. The output pressure and flow of the servo oil are regulated by a plunger pump proportion control module, and particularly, a proportional valve electromagnet, a proportional valve core displacement feedback instruction, a pump swashplate swashangle sensor instruction and a pump outlet pressure sensor instruction which are used for controlling on a pump swashplate angle controller are controlled by a pump digital control electronic element, the output pressure and the output displacement of a pump which need to be realized are input through a software interface, and the pump digital control electronic element is automatically controlled in a closed loop to realize output; the servo oil reversing module realizes pressure safety protection through an overflow valve, the stability of the hydraulic system is realized through an energy accumulator, and the rapid unloading and safety protection of the hydraulic system under emergency are realized through a pilot type plug-in safety valve; the pump control pilot pressure oil and low-pressure lubricating oil supply module is controlled, and the adjustment and control of oil ways with different output pressures are realized through the motor pump set and the hydraulic valve; the fuel pressure stabilization control module is used for realizing the regulation and the stable control of the fuel pressure through a motor pump set, a hydraulic valve, a hydraulic auxiliary and a sensor; the hydraulic motor driving control module is used for adjusting the output torque of the motor through a variable pump-motor volume speed regulation loop and changing the output pressure of the pump, adjusting the output rotating speed of the motor through changing the output displacement of the pump, and realizing the control of different diesel engine fuel injection time sequences through the design of connecting a cam on a rotating shaft; the tested fuel injection system module provides a fuel pump, a high-pressure oil pipe, a fuel injector and a pressure sensor of the fuel injection system, so that the research on a fuel injection rule and the test of fuel injection pressure are realized; the strong electric control module, the weak electric control and the signal acquisition module of the hydraulic driving system realize the start, stop and scram control of the driving pump motor and the start and stop control of the air cooler; the weak current electrical control and signal acquisition module is used for realizing the design and control of a system control interface, the control of an electromagnetic valve, the interface display, acquisition and storage of a sensor signal; the modules are connected through a hydraulic system pipeline, control signals are processed through a programmable controller, and simulation of different running powers and rotating speeds of the diesel engine is realized by controlling the torque and the rotating speed output by the driving motor.
Drawings
FIG. 1 is a schematic diagram of a hydraulic drive system of the present invention;
FIG. 2 is a three-dimensional layout of a hydraulic drive system of the present invention;
FIG. 3 is a cross-sectional view of a drive control module of the hydraulic motor of the present invention coupled to a spindle cam;
FIG. 4 is an enlarged view of a portion of FIG. 1 at A1;
FIG. 5 is a partial enlarged view (flipped 90 degrees) at B2 of FIG. 1;
FIG. 6 is an enlarged view of a portion of FIG. 1 at C3 (flipped 90 degrees);
FIG. 7 is an enlarged view (flipped 90 degrees) of a portion of FIG. 1 at D4;
FIG. 8 is an enlarged view of a portion of FIG. 1 at E5;
fig. 9 is a partial enlarged view at F6 of fig. 1.
Detailed Description
Hydraulic drive system for testing fuel injection system of marine diesel engine, see fig. 1-9: the device comprises a fuel injection module F6 to be detected, a pump control pilot pressure oil and low-pressure lubricating oil supply module C3, a servo oil output control module A1, a servo oil reversing module B2, a fuel pressure stabilization control module D4, a hydraulic motor driving control module E5, a weak current electric control and signal acquisition module G7 and a strong current electric control module H8, wherein the fuel pressure stabilization control module D4 provides fuel input and fuel return of the fuel injection module F6, the pump control pilot pressure oil and low-pressure lubricating oil supply module C3 comprises an integrated control module 25, the integrated control module 25 provides lubricating oil input and return of the fuel injection module F6, the servo oil output end of the pump control pilot pressure oil and low-pressure lubricating oil supply module C3 is connected with the servo oil output control module A1, the servo oil output control module A1 is connected with the servo oil reversing module B2, the servo has a reversing module B2 connected with the hydraulic motor driving control module E5, the hydraulic motor servo driving control module E5 comprises a hydraulic motor 53, a rotating shaft 62 and a cam, the hydraulic motor 53 receives servo oil from a servo oil reversing module B2, the output end of the hydraulic motor 53 is provided with the rotating shaft 62, the cam is positioned and sleeved on the rotating shaft 62, the cam is used as a power input structure of the fuel injection module F6, the weak current electric control and signal acquisition module G7 is respectively connected with the fuel injection module F6, a pump pilot pressure oil and low pressure lubricating oil supply module C3, a servo oil output control module A1, a servo oil reversing module B2, a fuel pressure stabilizing control module D4, a data monitoring component corresponding to the hydraulic motor driving control module E5 and a corresponding drivable component through data wires or electric wires, the strong electric control module G8 is respectively connected with strong electric driving equipment of the corresponding module.
In the embodiment, the fuel injection system of the marine diesel engine is provided with two fuel pumps, so the cams are provided with two corresponding fuel pumps.
Specific examples are as follows:
the pump control pilot pressure oil supply and low pressure lubricating oil supply module comprises a servo oil tank 1, a temperature sensor 2, a liquid level switch 3, an air filter 4, an oil suction filter element 5, a liquid level meter 6, an oil suction filter element 7, an oil return filter 8, an air cooler 9, an oil return module 10, a ball valve 12, a gear pump 13, a bell housing coupler 14, a motor 15, a ball valve 16, a pressure gauge 17, a pressure gauge switch 18, a pressure sensor 19, an overflow valve 20, a one-way valve 21, an adjustable throttle valve 22, an adjustable throttle valve 23, an energy accumulator 24, a pressure reducing valve 26, a 2-bit 2 electromagnetic valve 27, a pressure measuring joint 28 and a ball valve 29; the temperature sensor 2, the liquid level switch 3, the air filter 4, the liquid level meter 6, the oil suction filter element 7, the oil return filter 8, the ball valve 12, the oil suction filter element 5, the ball valve 16, the motor 15, the bell jar coupling 14 and the pump 13 are arranged on the servo oil tank 1. Hydraulic oil is connected to an oil suction port of the gear pump 13 through the oil suction filter element 5, and a driving shaft of the motor 15 is connected to a driving shaft of the pump 13 through a coupling 14, so that the pump 13 is controlled to pump pressure oil; the oil outlet path of the pump 13 is connected to the oil path of the oil return module 10 after being connected to the overflow valve 20, and is used for returning oil to the oil tank 1 through the air cooler 9 and the oil return filter 8; an oil path is connected to the pressure sensor 19 after being connected to the check valve 21, and is connected to the pressure gauge 17 after being connected to the pressure gauge switch 18; the other oil passage is connected to the accumulator 24 after being connected to the adjustable throttle valve 22, and is connected to the oil return module 10 after being connected to the adjustable throttle valve 23; after being connected to the pressure reducing valve 26, the oil circuit is connected with the 2-position 2-electricity valve 27, the ball valve 29 and the driving part sleeve; the oil circuit is connected with the pressure measuring joint 28; the oil way in the oil return air cooling module 10 is connected with the oil inlet of the one-way valve 11, is connected with the oil port of the oil return filter 8, and returns to the oil tank 1; the oil way is connected with the air cooler 9 and then is connected with an oil port of the oil return filter 8 and then returns to the oil tank 1;
the servo oil output control module is specifically a plunger pump proportion control module with the servo oil output pressure and flow capable of being adjusted in real time, and comprises a motor pump group, a pump proportion adjustment module and a pump digital control electronic element; the hydraulic oil in the servo oil tank 1 passes through the oil suction filter element 7, then enters the oil suction port of the hydraulic pump body 32.1, the motor 30 is connected with the rotating shaft of the pump body 32.1 through the bell-shaped coupler 31, so that the driving control of the pump is realized, the pressure oil pumped by the pump body 32.1 is connected to the P0 oil port of the servo oil reversing module, the pressure control oil pumped by the 3-bit 4-way proportional valve 32.2 on the pump body enters the P port of the proportional valve 32.2 from one path of the oil port of the integrated block control module 25, the T port of the proportional valve 32.2 is connected to one non-pressure oil return port of the integrated block control module 25, the oil returns to the oil tank 1, and the leakage oil of the pump body 32.1 enters the oil return port of the integrated block control module 10 through the other oil return port of the integrated block control module 25
The bell-shaped cover coupler is used for elastically connecting the motor and the oil pump shaft, transmitting load and fixing the motor and the oil pump; the pump proportion adjusting module comprises a 3-position 4-way proportional valve, wherein the 3-position 4-way proportional valve is provided with a valve core displacement detecting sensor, a pump swing angle displacement sensor and a pump outlet pressure sensor, and realizes real-time closed-loop adjusting control on the output pressure and flow of an oil pump together with the pump digital control electronic element;
the fuel injection system modules are in 2 groups, one group comprises a fuel pump 58, a high-pressure oil pipe 73 and a fuel injector 76; the other group comprises a fuel pump 59, a high-pressure oil pipe 74 and an oil injector 75, wherein the high-pressure fuel pumped by the fuel pump is connected to a high-pressure oil inlet of the oil injector through the high-pressure oil pipe to realize fuel injection, and meanwhile, a pressure sensor detects the injection rule of a fuel injection system. The lubrication oil way is connected to a lubrication oil inlet of a fuel injection system through a ball valve 29, the lubrication oil of the fuel injection system is connected to an oil return oil way of the integrated block control module 25 in an oil return way and directly returns to the oil tank 1, the power part of each fuel pump is the cam structure at a corresponding position, the fuel pump is connected to a high-pressure oil inlet of a corresponding fuel injector through a corresponding high-pressure oil pipe, and the pressure sensors 71 and 72 are connected to the corresponding high-pressure oil pipe; the pressure sensor is used for detecting the pressure condition of the fuel injection system during operation; the fuel inlet of each group of fuel pumps is connected with the oil outlet of the fuel pressure stabilizing control module D4, and the oil return port of each group of fuel pumps is connected with the oil return port of the fuel pressure stabilizing control module D4;
the servo oil reversing module B2 is a servo oil pressure safety, stability and reversing module, and comprises a check valve 34, an overflow valve 35, a pressure gauge switch 41, a pressure gauge 42, a pressure sensor 40, a pressure sensor 39, an adjustable throttle valve 43, an adjustable throttle valve 44, an energy accumulator 45, a pressure gauge switch 46, a pressure gauge 47, a pressure measuring joint 48, an adjustable throttle valve 49, a 2-way cartridge valve 38, a throttle 37, a 2-position 2-way electric valve 36, a 3-position 4-way electric liquid direction valve 51, a check valve 50, wherein the pressure oil pumped by the pump 32 is connected to a P0 oil port of the servo oil reversing module B2 and then enters the check valve 34, an oil path is connected to the overflow valve 35, and the oil return of the overflow valve 35 is connected to the oil return block 10 through a pipeline; the other oil way is connected with the pressure gauge switch 41 and then connected to the pressure gauge 42; the other oil passage is connected with an adjustable throttle valve 44 and then connected with an accumulator 45; the other oil way is connected to the pressure gauge switch 46 and then to the pressure gauge 47; the other oil passage is connected to the pressure-free return oil passage after being connected to the adjustable throttle valve 43; the other oil passage is connected with a pressure sensor 39; the other oil passage is connected with the pressure sensor 40; the other oil way is connected with the pressure measuring joint 48; the other oil passage is connected with an adjustable throttle valve 49; the other oil way is connected to the oil inlet of the 2-way cartridge valve 38, and the oil return oil way of the 2-way cartridge valve 38 is connected to the pressureless oil return oil way; the other oil way is connected with the control oil port of the 2-way cartridge valve 38 after the throttle 37 and is simultaneously connected with the oil inlet of the 2-position 2-way electromagnetic valve 36, and the oil return port of the electromagnetic valve 36 is connected with the pressureless oil return oil way; the oil way is connected to an oil inlet P of the 3-position 4-energized liquid direction valve 51, and an oil return port T of the electro-hydraulic direction valve 51 is connected to the one-way valve 50 and then is connected to the oil return block 10 through a pipeline; then one path of oil way is connected to the oil port of the oil return filter 8 and is connected to the oil return box 1 after being connected to the air cooler 9; the other oil way is connected to the oil inlet of the one-way valve 11 and then is connected to the oil port of the oil return filter 8, and then the oil return tank 1 is filled with oil;
the hydraulic motor driving control module E5 is a driving control module of a rotating shaft cam connected with a hydraulic motor, and comprises a hydraulic motor 53, a diaphragm coupler 54, a rotating speed sensor 55, cams 61 and 63, a rotating shaft 62, a flywheel 65, a rotating speed encoder 66 and a speed regulator 56, wherein two pressure oil ways of an electrohydraulic directional valve in the servo oil reversing module B2 are respectively connected to two oil way input ports of the hydraulic motor, and a leakage oil way of the hydraulic motor is connected to a non-pressure return oil way of the servo oil reversing module; specifically, an oil path A of the electro-hydraulic directional valve 51 is connected to an oil port of the hydraulic motor 53, and the other oil port of the hydraulic motor 53 is connected to an oil path B of the electro-hydraulic directional valve 51; the leakage oil path of the hydraulic motor 53 is connected to the pressureless return oil path of the servo oil inverting module B2. The drive shaft of the hydraulic motor 53 is connected to the rotary shaft 62 through a diaphragm coupling 54, a detection gear is mounted on the diaphragm coupling 54, and the rotation speed sensor 55 detects the drive rotation speed of the motor through the detection gear; the rotating shaft 62 is provided with a cam 61 and a cam 63 for driving the fuel pump to work; the rotating shaft 62 supports the rotation of the rotating shaft through the slide bearing 60 and the slide bearing 64; the flywheel 64 is installed on the rotation speed, and the rotation shaft is connected with the rotation speed encoder 66 through an elastic connector, so that the real-time rotation speed of the rotation shaft is measured. The speed regulator 56 regulates the oil inlet amount of the fuel pump of the fuel injection system through the link mechanism 57; the pressure sensor 71 is connected to the high-pressure oil pipe 73; the pressure sensor 72 is connected to a high pressure oil line 74; for detecting pressure conditions during operation of fuel injection systems
A push rod driving structure 108 is arranged at the position, facing the outer ring surface of the cam, of the power input end of the fuel pump, and the exposed end of the push rod driving structure 108 is closely attached to the outer peripheral surface of the corresponding cam, so that the driving torque of the hydraulic motor 53 is transmitted to the fuel pump in the fuel injection system;
the fuel pressure stabilizing control module comprises an oil supply tank, a motor pump group, an integrated block control module and an air cooler, and specifically comprises an oil tank 83, a ball valve 82, an oil suction filter element 84, a liquid level meter 86, an oil return filter 85, an air filter 87, a temperature sensor 92, a motor 88, a bell-type cover coupler 89, a gear pump 90, an air cooler 91, a one-way valve 94, an overflow valve 93, a 2-bit 2 electromagnetic valve 98, an overflow valve 95, a pressure sensor 96, a pressure measuring joint 97, an adjustable throttle valve 99, an adjustable throttle valve 100, an adjustable throttle valve 101, a pressure measuring joint 103, a pressure meter switch 104, a pressure meter 105, an energy accumulator 106 and a pressure sensor 107; the ball valve 82, the oil suction filter element 84, the liquid level meter 86, the oil return filter 85, the air filter 87, the temperature sensor 92, the motor 88, the bell-type cover coupler 89 and the gear pump 90 are arranged on the oil tank 83; the fuel enters an oil suction port of the gear pump 90 through the oil suction filter element 84, a rotating shaft of the gear pump 90 is connected with a rotating shaft of the motor 88 through a coupling 89, the motor 88 drives the gear pump 90 to rotate, and the pumped pressure fuel is connected to a P01 oil port of the pressure control module 102; the fuel oil way is connected with a check valve 94, one way is connected with an overflow valve 93, is connected with an air cooler 91, is connected with an oil return filter 85, and returns to the oil tank 83; the other oil passage is connected with an adjustable throttle valve 99 and an accumulator 106; the other oil way is connected with the pressure gauge switch 104 and then is connected with the pressure gauge 105; the other oil way is connected with the adjustable throttle valve 100 and then is connected with the air cooling 91, the oil return filter 85 and returns to the oil tank 83; the other oil way is connected with a 2-position 2-powered valve 98, then is connected with an air cooler 91, is connected with an oil return filter 85 and returns to the oil tank 83; the other oil passage is connected with the pressure sensor 107; the other oil way is connected with the adjustable throttle valve 101 and then connected with the flowmeter 69 through a pipeline, and enters into a fuel oil inlet of a fuel injection system; the fuel oil return path of the fuel injection system is connected with the flowmeter 68 and then is connected with an oil return path of the integrated block control module 102 through a pipeline, the oil return path is connected with the pressure measuring joint 97, the oil return path is connected with the pressure sensor 96, the oil return path is connected with the air cooler 91 after being connected with the overflow valve 95 and is connected with the oil return tank 83 after being connected with the oil return filter 85, and the oil return path is used for adjusting the back pressure of the fuel oil supply pressure in the fuel injection system.
The electric control system and the signal acquisition module comprise a strong current cabinet, a weak current cabinet, electric components, a controller, a signal acquisition card, an industrial personal computer, an operation control and monitoring interface, and are used for realizing motor starting, stopping, scram control and pump closed-loop proportional control, electromagnetic valve logic control, high-speed acquisition of sensor signals in the system, displaying the sensor signals, monitoring the running state of equipment, driving the running state and running rule of the tested fuel injection system, and providing real-time test data for the research and development of the fuel injection system.
The foregoing describes the embodiments of the present invention in detail, but the description is only a preferred embodiment of the invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made in accordance with the scope of the present invention shall fall within the scope of the present patent.
Claims (3)
1. The utility model provides a marine diesel engine fuel injection system test is with hydraulic drive system, its including the fuel injection module that waits to detect, its characterized in that: the hydraulic motor driving control system comprises a hydraulic motor driving control module, a weak current electric control and signal acquisition module and a strong current electric control module, wherein the hydraulic motor driving control module is used for receiving servo oil from the servo oil reversing module, the output end of the hydraulic motor is provided with a rotating shaft, the cam is positioned on the rotating shaft and is used as a power input structure of the fuel oil spraying module, the servo oil output end of the hydraulic motor driving control module is connected with the servo oil output control module, the servo oil output control module is connected with the hydraulic motor driving control module, the hydraulic motor driving control module comprises a hydraulic motor, a rotating shaft and a cam, the hydraulic motor is used for receiving servo oil from the servo oil reversing module, the output end of the hydraulic motor is provided with the rotating shaft, and the cam is used as a power input structure of the fuel oil spraying module, and the weak current electric control module is connected with corresponding to the hydraulic motor driving control device through a wire or the corresponding to the hydraulic motor driving control device, the hydraulic motor driving control device and the strong current electric control module;
the pump-control pilot pressure oil supply and low-pressure lubricating oil supply module comprises a servo oil tank, a motor pump group, an integrated block control structure and an oil return air cooler structure, wherein the servo oil tank is provided with two oil outlet channels, one channel is used for driving a pump to output servo oil, the other channel is used for outputting servo oil through an oil suction filter element with a one-way valve, the servo oil sucked out through the oil suction filter element is introduced into an inlet of the servo oil output control module, an oil way output by the pump is connected to an oil inlet end of the integrated block control structure, an oil return end of the integrated block control structure is provided with a pressure end and a non-pressure end, an oil pipe of the non-pressure end is directly introduced into an oil return port of the servo oil tank, an oil pipe of the pressure end is introduced into an input end of the oil return air cooler structure, an output end of the oil return air cooler structure is connected to an oil return filter of the servo oil tank, and the oil return air cooler structure is used for cooling the temperature of a system medium;
the integrated block control structure comprises an integrated block matrix, and an overflow valve, a one-way valve, a pressure gauge, a pressure sensor, an adjustable throttle valve, an energy accumulator, a pressure reducing valve, a 2-bit 2-way electromagnetic valve and a pressure measuring connector which are integrated on the integrated block matrix, wherein the integrated block matrix is used for realizing the installation of each valve of the principle function of a hydraulic system and the connection of a system principle oil way; the overflow valve is used for setting the working pressure of the system; the energy accumulator is used for stabilizing the pressure fluctuation of the system; the pressure gauge and the pressure sensor are used for displaying the system pressure; the pressure reducing valve is used for adjusting and controlling the pressure of the output lubricating oil; the 2-bit 2-way solenoid valve is used for controlling the rule of outputting lubricating oil;
the servo oil output control module is specifically a plunger pump proportion control module with the servo oil output pressure and flow capable of being adjusted in real time, and comprises a motor pump group, a pump proportion adjustment module and a pump digital control electronic element; the motor pump set comprises a pump body, a motor and a bell-shaped cover coupler, wherein the motor is used for driving the oil pump to work, and the bell-shaped cover coupler is used for elastically connecting the motor and the oil pump shaft, transmitting load and fixing the motor and the oil pump; the pump proportion adjusting module comprises a 3-position 4-way proportional valve, wherein the 3-position 4-way proportional valve is provided with a valve core displacement detecting sensor, a pump swing angle displacement sensor and a pump outlet pressure sensor, and realizes real-time closed-loop adjusting control on the output pressure and flow of an oil pump together with the pump digital control electronic element;
the fuel injection module comprises two groups of fuel injection structures, each group of fuel injection structure comprises a fuel pump, a high-pressure oil pipe and an oil sprayer, the power part of each fuel pump is the cam structure at the corresponding position, the fuel pump is connected to a high-pressure oil inlet of the oil sprayer through the high-pressure oil pipe, and the pressure sensor is connected to the corresponding high-pressure oil pipe; the pressure sensor is used for detecting the pressure condition of the fuel injection system during operation; the fuel inlet of each group of fuel pumps is connected with the oil outlet of the fuel pressure stabilizing control module, and the oil return port of each group of fuel pumps is connected with the oil return port of the fuel pressure stabilizing control module;
the servo oil reversing module is a servo oil pressure safety, stability and reversing module and comprises an integrated block matrix, a one-way valve, an overflow valve, a pressure gauge, an energy accumulator, a pilot type plug-in safety valve assembly, an electrohydraulic directional valve, a pressure sensor, an adjustable throttle valve and a pressure measuring connector, wherein the one-way valve, the overflow valve, the pressure gauge, the energy accumulator, the pilot type plug-in safety valve assembly, the electrohydraulic directional valve, the pressure sensor, the adjustable throttle valve and the pressure measuring connector are integrated on the integrated block matrix; the integrated block is used for realizing the installation of each valve of the hydraulic system principle function and the connection of a system principle oil circuit; the pilot type cartridge safety valve assembly consists of a 2-way cartridge valve, a 2-position 2-way power-on valve and a throttle; the 2-way cartridge valve has large flow area, and high-pressure oil in the system can be instantaneously discharged during the action, so that the safety protection effect is achieved; the 2-position 2-way electromagnetic valve is used for controlling the communication and disconnection of an oil way of a control cavity of the 2-way cartridge valve in a pilot mode, and the purpose of automatically controlling the 2-way cartridge valve is achieved; the throttle is used for establishing a pressure difference of a 2-way cartridge valve and ensuring high-pressure oil to be discharged when the electromagnetic valve acts, and the electrohydraulic directional valve is a 3-position 4-way electrohydraulic directional valve which is used for controlling the rotation direction of the hydraulic motor; the pressure sensor is used for collecting a system pressure signal and performing closed-loop control on pump input pressure;
the hydraulic motor driving control module is specifically a driving control module of a rotating shaft cam connected with a hydraulic motor, and comprises the hydraulic motor, a diaphragm coupler, a rotating speed sensor, the cam, a rotating shaft, a flywheel, a rotating speed encoder and a speed regulator, wherein two pressure oil ways of an electrohydraulic directional valve in the servo oil reversing module are respectively connected to two oil way input ports of the hydraulic motor, and a leakage oil way of the hydraulic motor is connected to a non-pressure return oil way of the servo oil reversing module;
the driving shaft of the hydraulic motor is connected to the rotating shaft through a diaphragm coupler, a detection gear is arranged on the diaphragm coupler, and the rotating speed sensor detects the driving rotating speed of the motor through the detection gear; the rotating shaft is provided with cams corresponding to the number of the fuel pumps, and the cams are used for driving the fuel pumps to work; the rotating shaft is supported by sliding bearings at two ends to rotate; the outer end of the rotating shaft is provided with a flywheel, the rotating shaft is connected with a rotating speed encoder through an elastic connector, and the rotating speed encoder is used for measuring the real-time rotating speed of the rotating shaft; the speed regulator regulates the oil inlet amount of a fuel pump of the fuel injection system through a connecting rod mechanism; the power input end of the fuel pump faces the outer ring surface of the cam, a push rod driving structure is arranged at the position, facing the outer ring surface of the cam, of the power input end of the fuel pump, and the exposed end of the push rod driving structure is closely attached to the corresponding outer peripheral surface of the cam, so that driving torque of the hydraulic motor is transmitted to the fuel pump in the fuel injection system.
2. The marine diesel fuel injection system testing hydraulic drive system of claim 1, wherein: the oil suction filter core is connected to the input of pump, still be provided with level gauge, temperature sensor in the servo oil tank, be provided with the forced air cooler in the oil return forced air cooler structure, temperature sensor with form the correlation between the forced air cooler.
3. The marine diesel fuel injection system testing hydraulic drive system of claim 1, wherein: the fuel pressure stabilizing control module comprises an oil supply tank, a motor pump set, an integrated block control module and an air cooler, wherein the oil supply tank comprises a temperature sensor, an oil return filter element, a liquid level meter, an oil suction filter element and an air cleaner; the motor pump group comprises an oil pump, a motor and a bell-shaped cover coupler; the integrated block control module comprises an integrated block, a one-way valve, an overflow valve, a pressure gauge, a pressure sensor, an adjustable throttle valve, an energy accumulator, a pressure measuring joint and a 2-bit 2-electromagnetic valve which are integrated on the integrated block; the integrated block is used for realizing the installation of each valve of the hydraulic system principle function and the connection of a system principle oil circuit; the overflow valve is used for setting the working pressure of the system; the energy accumulator is used for storing hydraulic energy and stabilizing system pressure; the pressure gauge and the pressure sensor are used for displaying the system pressure; the 2-bit 2-way electrified valve is used for pressure unloading of an automatic control system and plays a role in safety protection.
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| CN111927667B (en) * | 2020-09-07 | 2023-12-05 | 思达耐精密机电（常熟）有限公司 | High-pressure leakage test system for high-pressure common rail pump and application |
| CN114019893A (en) * | 2021-10-28 | 2022-02-08 | 中国舰船研究设计中心 | Electric drive side valve control system for ship |
| CN114278634B (en) * | 2021-12-16 | 2024-05-17 | 南京晨光集团有限责任公司 | High-temperature fuel servo flow metering characteristic test system |
| CN114718737B (en) * | 2022-04-11 | 2023-09-05 | 中国航发控制***研究所 | Flow open-loop control method of electric fuel pump |
| CN115126636B (en) * | 2022-07-12 | 2024-01-09 | 武汉东测科技有限责任公司 | Fuel system test bed |
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