CN111076072A - Oil-filling lubricating device between diesel engine air valve and valve seat - Google Patents
Oil-filling lubricating device between diesel engine air valve and valve seat Download PDFInfo
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- CN111076072A CN111076072A CN201911403528.2A CN201911403528A CN111076072A CN 111076072 A CN111076072 A CN 111076072A CN 201911403528 A CN201911403528 A CN 201911403528A CN 111076072 A CN111076072 A CN 111076072A
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- 230000001050 lubricating effect Effects 0.000 title claims abstract description 35
- 239000010687 lubricating oil Substances 0.000 claims abstract description 71
- 238000012544 monitoring process Methods 0.000 claims abstract description 44
- 230000000750 progressive effect Effects 0.000 claims abstract description 28
- 239000003921 oil Substances 0.000 claims description 80
- 238000012545 processing Methods 0.000 claims description 54
- 230000009471 action Effects 0.000 claims description 32
- 238000004891 communication Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 20
- 238000007789 sealing Methods 0.000 description 11
- 238000009414 blockwork Methods 0.000 description 8
- 230000005856 abnormality Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 206010022000 influenza Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N25/00—Distributing equipment with or without proportioning devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2260/00—Fail safe
- F16N2260/02—Indicating
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention provides an oiling and lubricating device between a diesel engine air valve and a valve seat, which comprises an electric constant delivery pump, a progressive distribution block and a monitoring assembly, wherein the electric constant delivery pump is connected with the valve seat; the electric constant delivery pump and the progressive distribution block are respectively connected with the monitoring assembly and are used for controlling the starting and stopping states of the electric constant delivery pump and the working conditions of the progressive distribution block; the electric quantitative pump is connected with an inlet of the progressive distribution block through a lubricating oil pipeline, and an outlet of the progressive distribution block is communicated with an air inlet channel of the diesel engine through the lubricating oil pipeline. The oiling lubricating device between the air valve and the valve seat can realize automatic start and stop and working state display of an oiling system according to the working condition of a diesel engine, has high reliability, can realize uniform oiling of the air valve and the valve seat, can effectively solve the problem of abrasion between the air valve and the valve seat, prolongs the service life of the air valve and the valve seat, and has higher practical value.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to an oiling and lubricating device between an air valve and a valve seat of a diesel engine.
Background
The air valve and the air valve seat are important parts for forming an air inlet and outlet channel of the diesel engine and controlling air inlet and outlet, and the air valve can be continuously opened and closed under the driving of the air distribution mechanism when the diesel engine works. When the air valve is closed, the air valve sealing ring band and the valve seat sealing ring band are mutually contacted, and the suction and the discharge of air flow are cut off. After the air valve is opened, the air valve is separated from the valve seat sealing ring band, fresh air required by the work of the diesel engine can enter the combustion chamber, and exhaust after combustion can be discharged out of the combustion chamber. When the air valve and the valve seat work, the air valve and the valve seat can be directly contacted with high-temperature fuel gas in the combustion chamber, so that the high-temperature and high-pressure load can be borne. In the closing process of the gas valve, the sealing ring belt of the gas valve and the valve seat can generate violent impact, after the gas valve is closed, under the action of gas explosion pressure, the contact pressure between the sealing ring belt of the gas valve and the sealing ring belt of the valve seat can reach hundreds of megapascals, and the gas valve can deform under the action of gas load, so that the sealing ring belts of the gas valve and the valve seat generate slight relative slippage. In the operation process of the diesel engine, the air valve and the valve seat are easy to abrade under the actions of high-frequency repeated impact, high temperature and contact sliding load.
In order to reduce the abrasion of the air valve and the valve seat, various measures are generally needed, such as controlling the closing speed of the air valve and reducing the impact of the air valve and the valve seat; the hardness of the sealing ring belt area of the air valve and the valve seat is improved by surface quenching or surfacing hard alloy; ensuring sufficient rigidity of the inlet valve to reduce slippage. However, as the design criteria of diesel engines are continuously improved, the explosion pressure and the heat load of the air valve and the valve seat are higher and higher, and even if the measures are taken, the abrasion is still difficult to control to an allowable degree. And the wear can be obviously reduced by dripping a trace of lubricating oil in the air inlet pipeline of the diesel engine to lubricate the air valve and the valve seat sealing ring belt. At present, a common gas valve oiling and lubricating device usually adopts a technical scheme that a plunger type electric constant delivery pump driven by a camshaft of a diesel engine through a gear sucks lubricating oil and supplies the lubricating oil to an air inlet channel.
The gas valve oiling and lubricating device mainly solves the problem of gas valve and valve seat abrasion, but the gas valve abrasion is related to various factors such as load, rotating speed and the like, when a diesel engine runs at high load, the gas valve and the valve seat are easy to abrade due to high rotating speed of the diesel engine, large seating impact of the gas valve and high gas explosion pressure, and the abrasion is controlled by taking measures of oiling and lubricating; when the diesel engine runs at idle speed or low load and low rotating speed, the air valve is small in seating impact and low in gas explosion pressure and heat load, and the air valve and the valve seat are not easy to wear even if oil adding lubricating measures are not taken. If the gas valve oil filling and lubricating device runs synchronously with the diesel engine all the time, the waste of lubricating oil can be caused, and the emission of hydrocarbon pollutants can be increased. Therefore, the gas valve oiling and lubricating device has the function of automatically starting and stopping according to load and rotating speed, so that the consumption rate of lubricating oil is reduced, hydrocarbon emission is reduced, and the economy of a diesel engine is improved.
Through the search of the prior art, the invention with application publication number CN108916622A discloses a lubricating oil filling device for a crane steel wire rope, which comprises a connecting plate, wherein an oil filling groove is formed in the bottom of the connecting plate, an oil filling pipe is arranged in the oil filling groove, a spray head is arranged on the oil filling pipe, a connecting pipe is arranged at the top of the oil filling pipe, a solenoid valve is arranged on the connecting pipe, an oil storage tank is arranged at the top of the connecting plate, an electronic liquid level meter is arranged in the oil storage tank, an oil inlet pipe is arranged at the top of the oil storage tank, and a control device is arranged. The device can not realize the even oiling between a plurality of groups of air valves and valve seats.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device for oiling and lubricating between a diesel engine air valve and a valve seat.
The invention provides a device for oiling and lubricating between a diesel engine air valve and a valve seat, which comprises an electric constant delivery pump, a progressive distribution block and a monitoring assembly, wherein the electric constant delivery pump is connected with the valve seat; the electric constant delivery pump and the progressive distribution block are respectively connected with a monitoring assembly, and the monitoring assembly controls the starting and stopping states of the electric constant delivery pump and displays the working conditions of the electric constant delivery pump and the progressive distribution block according to the working condition of the diesel engine; the electric constant delivery pump is connected with an inlet of the progressive distribution block through a lubricating oil pipeline, an outlet of the progressive distribution block is communicated with an air inlet channel of the diesel engine through the lubricating oil pipeline, the uniformity of oil quantity of each oil port is guaranteed through the progressive distributor, an inlet and a plurality of outlets are usually arranged, and the working principle and the structure of the electric constant delivery pump can realize the uniformity of flow of each outlet.
Furthermore, the monitoring assembly comprises a pressure switch, a pressure gauge and an action indicator, the electric constant delivery pump is connected with the pressure switch through a power line, and an oil outlet of the electric constant delivery pump is provided with the pressure gauge, so that the pressure of the oil outlet of the electric constant delivery pump can be displayed in real time, and the working state of the electric constant delivery pump can be reflected and displayed; the progressive distribution block is provided with an action indicator, and the action indicator is connected with a plunger in the progressive distribution block and can synchronously reciprocate with the plunger, so that the working condition of the distribution block can be displayed. Therefore, whether the electric constant delivery pump and the distribution block work normally can be checked through the pressure gauge and the action indicator, and if the abnormality occurs, the abnormality can be found in time.
The pressure switch is a pressure driving switch and is connected with a power supply and a diesel engine pressurization system. The boost pressure of the diesel engine is different under different working conditions, the boost pressure is low under low load, the pressure of a boost system cannot drive a pressure switch to be closed, and the electric constant delivery pump does not run; when the load is high, the supercharging pressure is high, the supercharging system pressure switch is closed, and the electric constant delivery pump operates.
Furthermore, the monitoring assembly comprises a monitoring system, a pressure sensor and an action sensor, wherein the monitoring system is connected with the electric constant delivery pump through a power line and is used for controlling the starting and stopping state of the electric constant delivery pump; the oil outlet of the electric constant delivery pump is provided with a pressure sensor, the progressive distribution block is provided with an action sensor, and the pressure sensor and the action sensor are both connected with a monitoring system.
Furthermore, a filter is arranged on an oil inlet pipeline of the electric constant delivery pump.
Furthermore, the progressive distribution block comprises a first-stage distributor and a second-stage distributor, wherein the first-stage distributor uniformly divides the lubricating oil pressurized by the electric constant delivery pump into two paths, and the two paths of lubricating oil are uniformly supplied to oil points for air inlet channels of the cylinders through the second-stage distributor respectively through a lubricating oil pipeline.
Further, the oil outlet of the primary distributor and the oil outlet of the secondary distributor are both provided with spring pre-tightening type one-way valves. The lubricating oil backflow can be prevented, and the interference of air inlet of the air inlet channel on the refueling system is avoided.
Further, the lubricating oil inlet can set up in reasonable region as required to can realize more accurate lubricated antifriction effect to the sealed face of pneumatic valve and disk seat with the oil point, it is preferred, the cylinder cap oil inlet of diesel engine sets up in the intake duct lower part.
Furthermore, the monitoring system comprises a central processing module, a power supply module, an analog signal processing module, an I/O signal processing module, a display control module, an RS485 communication module and a power driving module;
the power supply module is connected with the central processing module and converts external alternating current into direct current meeting the voltage and current requirements of each module of the monitoring system;
the analog signal processing module is connected with the central processing module and is used for collecting and filtering the signals of the pressure sensor;
the I/O signal processing module is connected with the central processing module and is used for carrying out interference isolation and acquisition on pulse signals of the distribution block action sensors;
the display control module is connected with the central processing module, and performs sound-light alarm when the central processing module outputs a fault signal of the electric constant delivery pump or the distribution block; meanwhile, the start-stop state of the electric lubricating pump is directly controlled;
the RS485 communication module is connected with the central processing module and is used for sending the monitoring system test signal and the state signal to the remote control system so as to realize the communication processing of the monitoring system by the remote control system;
the power driving module is respectively connected with the central processing module and the power supply module, amplifies power according to the requirements of the electric constant delivery pump on driving voltage and current, and supplies power to the electric constant delivery pump according to a control signal of the central processing module;
and the central processing module is used for judging and processing the start and stop signals of the electric constant delivery pump, the faults of the electric constant delivery pump and the distribution block. The central processing module judges the starting and stopping states of the electric constant delivery pump according to the received control signals of the display control module and the remote control system, the diesel engine rotating speed and torque signals and the set control logic, and outputs the starting and stopping signals to the power driving module. The central processing module also judges whether the electric quantitative and distribution block works normally according to the received oil pressure signal of the electric quantitative pump, the action sensor signal of the distribution block and the set analysis logic, and outputs an acousto-optic alarm signal to the display control module if the electric quantitative and distribution block works normally.
Compared with the prior art, the invention has the following beneficial effects: the oiling lubricating device between the diesel engine air valve and the valve seat can realize the automatic start and stop of the oiling system according to the diesel engine load, and can display the running state of the system in real time through the pressure gauge and the action indicator; the oil filling device has high reliability, can realize uniform oil filling on the air valve and the valve seat, can effectively solve the problem of abrasion of the air valve and the valve seat, prolongs the service life of the air valve and the valve seat, and has higher practical value.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural diagram of example 2 of the present invention;
fig. 3 is a schematic diagram of a control system according to embodiment 2 of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
For a marine diesel engine, the number of cylinders is usually large, for a straight engine, the number of cylinders is usually 5-9, for a V engine, the number of cylinders is usually 12-20, oil consumption points of an air valve oiling device are many, a pipeline is long and thin, the oil consumption points can be blocked due to dirt after long-term use, and an oiling lubricating pump can also be in failure. Therefore, the monitoring function of displaying whether the oil filling device works normally needs to be provided, otherwise, if the oil filling device fails, the air valve is seriously abraded.
Take a V-type 20-cylinder diesel engine as an example
Example 1
The invention ensures the uniformity of the oil quantity of each oil using port through the progressive distributor. For the V-shaped 20-cylinder diesel engine of the embodiment, the V-shaped 20-cylinder diesel engine is realized by adopting a mode of connecting two stages of progressive distributors in series. Firstly, the lubricating oil pressurized by an electric constant delivery pump is uniformly divided into 2 paths by a progressive distributor (primary stage), the lubricating oil is respectively supplied to two rows of cylinder covers of an A \ B diesel engine, and the lubricating oil in the A \ B paths is respectively supplied to all oil consumption points by the progressive distributor (secondary stage) through pipelines.
The embodiment will be described in detail below.
A device for oiling and lubricating between a diesel engine air valve and a valve seat comprises an electric constant delivery pump 2, a primary distributor 4, a secondary distributor 6 and a pressure switch 8;
the pressure switch 8 is connected with the electric constant delivery pump 2 through a power cord 9 and is used for automatically controlling the starting and stopping states of the electric constant delivery pump 2. The electric constant delivery pump 2 supplies power under the control of the pressure switch 8, the pressure switch is connected with an air inlet channel after the pressurization of the diesel engine pressurization system, the pressurization pressure is low under low load, the pressurization system pressure cannot drive the pressure switch to be closed, and the electric constant delivery pump does not run; when the load is high, the supercharging pressure is high, the supercharging system pressure switch is closed, and the electric constant delivery pump operates; therefore, the pressure switch can automatically control the start and stop of the electric constant delivery pump according to the load of the diesel engine (characterized by the boost pressure of the diesel engine).
The electric constant delivery pump 2 is connected with an inlet of the first-stage distributor 4 through a lubricating oil pipeline, lubricating oil pressurized by the electric constant delivery pump 2 is supplied to the first-stage distributor 4 through the lubricating oil pipeline, the first-stage distributor 4 uniformly divides the lubricating oil into two paths, the two paths of lubricating oil are respectively supplied to the second-stage distributor 6 through the lubricating oil pipeline, and the second-stage distributor 6 uniformly divides the lubricating oil into 10 paths again and respectively supplies oil to oil points for air inlet channels of the cylinder covers.
The oil inlet pipeline of the electric constant delivery pump is provided with a diesel engine filter 1.
And the oil outlet of the first-stage distributor and the oil outlet of the second-stage distributor are both provided with spring pre-tightening type one-way valves 7. The one-way valve only allows the lubricating oil to flow from the distributor to the cylinder cover, but not the reverse flow, so that the problems of air entering an air inlet passage into an air inlet valve refueling system and lubricating oil backflow can be avoided.
The oil outlet of the electric constant delivery pump is provided with a pressure gauge 3 which can display the pressure of the oil outlet of the electric constant delivery pump in real time so as to reflect and display the working state of the electric constant delivery pump; the primary dispenser 4 is fitted with an actuation indicator 5 which detects movement of the dispenser plunger and which detects movement of the dispenser block plunger. Therefore, whether the electric constant delivery pump and the distribution block work normally can be checked through the pressure gauge and the action indicator, and if the abnormality occurs, the abnormality can be found in time.
To the serial-type air flue that marine diesel engine used commonly at present, if the oil inlet was arranged in the air flue top, lubricating oil can be attached to and distribute on air flue wall upper portion under the high-speed of the air current that admits air erodes, and lubricating oil can be more under the air current erodes and enter into long air flue, and the oil input volume of short intake duct can be less than long air flue, causes short intake duct lubricated oil mass not enough, can lead to the air valve and the disk seat wearing and tearing of two air flues inhomogeneous from this. Therefore, in this embodiment, the cylinder cap oil inlet of diesel engine sets up in the intake duct lower part, and lubricating oil gets into the air flue after, under the scouring action of admitting air, can more even distribution on long, short air flue wall and admission valve and valve seat sealing face, realize the lubricated antifriction effect to the friction pair.
The working process is as follows:
after the gas valve oiling and lubricating control system is powered on, the pressure switch senses the pressure of a pressurization system of the diesel engine in real time, the pressurization pressure is low when the diesel engine is under low load, the pressure of the pressurization system cannot drive the pressure switch to be closed, and the electric constant delivery pump does not run; when the diesel engine is in high load, the supercharging pressure is high, the supercharging system pressure drives the pressure switch to be closed, and the electric constant delivery pump operates;
when the electric quantitative pump works, clean lubricating oil filtered by the filter is sucked, the lubricating oil is pressurized by the electric quantitative pump and then is supplied to the first-stage distributor through the lubricating oil pipeline, the first-stage distributor uniformly divides the lubricating oil into 2 paths, the lubricating oil is supplied to the cylinder covers of two rows A \ B of the diesel engine through the lubricating oil pipeline, the lubricating oil in the rows A \ B is supplied to the second-stage distributor through the lubricating oil pipeline, and the second-stage distributor uniformly divides the lubricating oil into 10 paths again and respectively supplies oil to oil points for the air inlet channels of the cylinder covers.
The oil outlet pressure gauge of the electric constant delivery pump can display the pressure of the oil outlet of the electric constant delivery pump in real time so as to reflect and display the working state of the electric constant delivery pump; the primary dispenser 4 is fitted with an actuation indicator 5 which indicates the movement of the plunger of the dispenser block. Therefore, whether the electric constant delivery pump and the distribution block work normally can be checked through the pressure gauge and the action indicator, and if the abnormality occurs, the abnormality can be found in time.
The control device for oiling and lubricating between the diesel engine air valve and the valve seat capable of fault monitoring, provided by the invention, can automatically control the starting and stopping states of the electric constant delivery pump, realize uniform and accurate filling of lubricating oil for each oil consumption point, display whether the oiling system works normally or not in real time, avoid the problems of air flowing into the air valve oiling system, lubricating oil backflow and the like, and has a more efficient and reliable lubricating and anti-wear effect on the air inlet valve and the valve seat.
Example 2
A device for oiling and lubricating between a diesel engine air valve and a valve seat comprises an electric constant delivery pump 2, a primary distributor 4, a secondary distributor 6 and a monitoring system 10;
the monitoring system 10 is connected with the electric constant delivery pump 2 through a power line 9 and is used for controlling the start-stop state of the electric constant delivery pump 2 in real time. The electric constant delivery pump 2 is powered under the control of the monitoring system 10, the monitoring system is connected with signals such as the torque of the diesel engine, the monitoring system can control the start and stop of the electric constant delivery pump according to parameters such as the load (represented by the torque signal of the diesel engine) and the rotating speed according to a set program, the electric constant delivery pump is not started under low load and low rotating speed, and the electric constant delivery pump is started under medium and high load and rotating speed. The monitoring system is connected with an external remote control system, so that the oiling and lubricating control system can be controlled by the external remote control system.
The electric constant delivery pump 2 is connected with an inlet of the first-stage distributor 4 through a lubricating oil pipeline, lubricating oil pressurized by the electric constant delivery pump 2 is supplied to the first-stage distributor 4 through the lubricating oil pipeline, the first-stage distributor 4 uniformly divides the lubricating oil into two paths, the two paths of lubricating oil are respectively supplied to the second-stage distributor 6 through the lubricating oil pipeline, and the second-stage distributor 6 uniformly divides the lubricating oil into 10 paths again and respectively supplies oil to oil points for air inlet channels of the cylinder covers.
The oil inlet pipeline of the electric constant delivery pump is provided with a diesel engine filter 1.
And the oil outlet of the first-stage distributor and the oil outlet of the second-stage distributor are both provided with spring pre-tightening type one-way valves 7. The one-way valve only allows the lubricating oil to flow from the distributor to the cylinder cover, but not the reverse flow, so that the problems of air entering an air inlet passage into an air inlet valve refueling system and lubricating oil backflow can be avoided.
The oil outlet of the electric constant delivery pump is provided with a pressure sensor 11 which can output a lubricating oil pressure signal, the first-stage distributor 4 is provided with an action sensor 12 which detects the movement of the plunger of the distributor and can output the action signal of the plunger movement in the working process of the distributor to a diesel engine monitoring system 10, the pressure sensor and the action sensor are both connected with the diesel engine monitoring system, the diesel engine monitoring system judges whether the electric constant delivery pump and the distributor work normally or not through a program according to the real-time measured lubricating oil pressure behind the electric constant delivery pump and the signal of the first-stage distributor action sensor, and if the abnormality occurs, the alarm can.
To the serial-type air flue that marine diesel engine used commonly at present, if the oil inlet was arranged in the air flue top, lubricating oil can be attached to and distribute on air flue wall upper portion under the high-speed of the air current that admits air erodes, and lubricating oil can be more under the air current erodes and enter into long air flue, and the oil input volume of short intake duct can be less than long air flue, causes short intake duct lubricated oil mass not enough, can lead to the air valve and the disk seat wearing and tearing of two air flues inhomogeneous from this. Therefore, in this embodiment, the cylinder cap oil inlet of diesel engine sets up in the intake duct lower part, and lubricating oil gets into the air flue after, under the scouring action of admitting air, can more even distribution on long, short air flue wall and admission valve and valve seat sealing face, realize the lubricated antifriction effect to the friction pair.
The monitoring system comprises a central processing module (ECU), a power supply module, an analog signal processing module, an I/O signal processing module, a display control module, an RS485 communication module and a power driving module;
the power supply module is connected with the central processing module and converts external alternating current into direct current meeting the voltage and current requirements of each module of the monitoring system;
the analog signal processing module is connected with the central processing module and is used for collecting and filtering signals of the pressure sensor (signals such as torque of a diesel engine, oil pressure of an electric constant delivery pump and the like);
the I/O signal processing module is connected with the central processing module and is used for carrying out interference isolation and acquisition on pulse signals of the distribution block action sensors;
the display control module is connected with the central processing module, and performs sound-light alarm when the central processing module outputs a fault signal of the electric constant delivery pump or the distribution block; the start-stop state of the electric lubricating pump can be directly controlled;
the RS485 communication module is connected with the central processing module and is used for sending the monitoring system test signal and the state signal to the remote control system so as to realize the communication processing of the monitoring system by the remote control system;
the power driving module is respectively connected with the central processing module and the power supply module, amplifies power according to the requirements of the electric constant delivery pump on driving voltage and current, and supplies power to the electric constant delivery pump according to a control signal of the central processing module;
and the central processing module is used for judging and processing the start and stop signals of the electric constant delivery pump, the faults of the electric constant delivery pump and the distribution block. The central processing module judges the starting and stopping states of the electric constant delivery pump according to the received control signals of the display control module and the remote control system, the diesel engine rotating speed and torque signals and the set control logic, and outputs the starting and stopping signals to the power driving module. The central processing module also judges whether the electric quantitative and distribution block works normally according to the received oil pressure signal of the electric quantitative pump, the action sensor signal of the distribution block and the set analysis logic, and outputs an acousto-optic alarm signal to the display control module if the electric quantitative and distribution block works normally.
The working process is as follows:
after the gas valve oiling and lubricating control system is powered on and started, the monitoring system collects control signals of the display control module and the remote control system, the rotating speed and torque signals of the diesel engine, oil pressure signals of the electric constant delivery pump and action sensor signals of the distribution block in real time, the central processing module judges the working start-stop state of the electric constant delivery pump according to set electric constant delivery pump control logic and outputs control signals to the power driving module, and the power driving module supplies power or cuts off power to the electric constant delivery pump according to the control signals.
If the power driving module supplies power, the electric constant delivery pump starts to work, clean lubricating oil filtered by the filter is sucked, the lubricating oil is pressurized by the electric constant delivery pump and then is supplied to the first-stage distributor through the lubricating oil pipeline, the first-stage distributor uniformly divides the lubricating oil into 2 paths, the lubricating oil in the A \ B two rows of the diesel engine is supplied to the cylinder covers through the lubricating oil pipeline, the lubricating oil in the A \ B rows is supplied to the second-stage distributor through the lubricating oil pipeline, and the second-stage distributor uniformly divides the lubricating oil into 10 paths again and supplies oil to oil points for the air inlet channels of the cylinder covers respectively.
If the electric constant delivery pump or the distribution block works abnormally, the central processing module judges and identifies faults through analysis according to the received oil pressure signals or the action sensors and outputs alarm signals to the display control module, and the display alarm module carries out sound-light alarm according to the alarm signals.
The control device for oiling and lubricating between the diesel engine air valve and the valve seat capable of fault monitoring, provided by the invention, can perform functions of real-time control on the starting and stopping states of the electric constant delivery pump, uniform and accurate filling of lubricating oil to each oil consumption point, real-time monitoring on whether the oiling system works normally, control through an external remote control system and the like, can avoid the problems of air entering the air valve oiling system, lubricating oil backflow and the like, and has a more efficient and reliable lubricating and wear-reducing effect on the air inlet valve and the valve seat.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. A device for oiling and lubricating between a diesel engine air valve and a valve seat is characterized by comprising an electric constant delivery pump, a progressive distribution block and a monitoring assembly;
the electric constant delivery pump and the progressive distribution block are respectively connected with a monitoring assembly, and the monitoring assembly controls the starting and stopping states of the electric constant delivery pump and displays the working conditions of the electric constant delivery pump and the progressive distribution block according to the working condition of the diesel engine;
the electric quantitative pump is connected with an inlet of the progressive distribution block through a lubricating oil pipeline, and an outlet of the progressive distribution block is communicated with an air inlet channel of the diesel engine through the lubricating oil pipeline.
2. The device for filling oil and lubricating between the air valve and the valve seat of the diesel engine as claimed in claim 1, wherein the monitoring assembly comprises a pressure switch, a pressure gauge and an action indicator, the electric constant delivery pump is connected with the pressure switch through a power line, and an oil outlet of the electric constant delivery pump is provided with the pressure gauge which can display the pressure of the oil outlet of the electric constant delivery pump in real time; and the progressive distribution block is provided with an action indicator, and the action indicator is connected with a plunger in the progressive distribution block and synchronously reciprocates with the plunger to display the working condition of the distribution block.
3. The device for oiling and lubricating between the air valve and the valve seat of the diesel engine according to claim 1, wherein the monitoring assembly comprises a monitoring system, a pressure sensor and an action sensor, and the monitoring system is connected with the electric constant delivery pump through a power line and is used for controlling the starting and stopping states of the electric constant delivery pump;
the oil outlet of the electric constant delivery pump is provided with a pressure sensor, the progressive distribution block is provided with an action sensor, and the pressure sensor and the action sensor are both connected with a monitoring system.
4. The device for filling oil and lubricating between the air valve and the valve seat of the diesel engine as claimed in any one of claims 1 to 3, wherein a filter is arranged on an oil inlet pipeline of the electric constant delivery pump.
5. The device for adding oil and lubricating between the air valve and the valve seat of the diesel engine as claimed in any one of claims 1 to 3, wherein the progressive distribution block comprises a first-stage distributor and a second-stage distributor, the first-stage distributor uniformly divides the lubricating oil pressurized by the electric constant delivery pump into two paths, and the two paths of lubricating oil respectively supply oil uniformly to the oil points for the air inlet channels of the cylinders through the second-stage distributor via a lubricating oil pipeline.
6. The device for filling oil and lubricating between the diesel engine air valve and the valve seat as claimed in claim 5, characterized in that the oil outlet of the primary distributor and the oil outlet of the secondary distributor are both provided with spring pre-tightening type check valves.
7. The device for adding oil and lubricating between the air valve and the valve seat of the diesel engine as claimed in claim 5, wherein the lower part of the air inlet channel of the air cylinder is provided with an oil inlet of a cylinder cover of the diesel engine.
8. The device for filling oil and lubricating between the air valve and the valve seat of the diesel engine as claimed in claim 3, wherein the monitoring system comprises a central processing module, a power supply module, an analog signal processing module, an I/O signal processing module, a display control module, an RS485 communication module and a power driving module;
the power supply module is connected with the central processing module and converts external alternating current into direct current meeting the voltage and current requirements of each module of the monitoring system;
the analog signal processing module is connected with the central processing module and is used for collecting and filtering the signals of the pressure sensor;
the I/O signal processing module is connected with the central processing module and is used for carrying out interference isolation and acquisition on pulse signals of the distribution block action sensors;
the display control module is connected with the central processing module, and performs sound-light alarm when the central processing module outputs a fault signal of the electric constant delivery pump or the distribution block; meanwhile, the start-stop state of the electric lubricating pump is directly controlled;
the RS485 communication module is connected with the central processing module and is used for sending the monitoring system test signal and the state signal to the remote control system so as to realize the communication processing of the monitoring system by the remote control system;
the power driving module is respectively connected with the central processing module and the power supply module, amplifies power according to the requirements of the electric constant delivery pump on driving voltage and current, and supplies power to the electric constant delivery pump according to a control signal of the central processing module;
and the central processing module is used for judging and processing the start and stop signals of the electric constant delivery pump, the faults of the electric constant delivery pump and the distribution block.
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