CN114151164A - Emergency oil supply protection system for single-cylinder diesel engine - Google Patents
Emergency oil supply protection system for single-cylinder diesel engine Download PDFInfo
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- CN114151164A CN114151164A CN202111419339.1A CN202111419339A CN114151164A CN 114151164 A CN114151164 A CN 114151164A CN 202111419339 A CN202111419339 A CN 202111419339A CN 114151164 A CN114151164 A CN 114151164A
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- pipeline
- oil
- diesel engine
- storage tank
- electromagnetic valve
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Classifications
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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
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
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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
- F01M1/00—Pressure lubrication
- F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
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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
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
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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
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
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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
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
-
- 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
- F01M1/00—Pressure lubrication
- F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
- F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention provides an emergency oil supply protection system of a single-cylinder diesel engine, which comprises an air compressor, an air storage tank, an oil storage tank, a plurality of electromagnetic valves, one-way valves and pressure sensors, wherein the components are connected and assembled with temperature, pressure and flow switches through pipelines, and a PLC control platform is built to form a conventional lubricating oil supply system of the single-cylinder diesel engine. The emergency oil supply protection system for the single-cylinder diesel engine has two lubricating oil supply modes under conventional and emergency conditions, and greatly reduces abnormal abrasion of moving parts of the single-cylinder diesel engine caused by emergency conditions.
Description
Technical Field
The invention belongs to the technical field of single cylinder diesel engine tests, and particularly relates to an emergency oil supply protection system for a single cylinder diesel engine.
Background
The large-power diesel engine has large volume, complex processing and manufacturing process, long processing period and high test cost, so that the performance development of the whole engine is usually to firstly verify and promote indexes on a test bench by using a single-cylinder diesel engine, a plurality of parts (such as a connecting rod, a piston, a cylinder sleeve, a piston ring and the like) of the whole engine are verified in the test process of the single-cylinder engine, and the whole engine is developed after the indexes of the single-cylinder diesel engine are realized, so that the single-cylinder diesel engine is an important part of the development of the whole engine and is directly related to the development quality and progress of the whole engine. The designed single-cylinder diesel engine is not provided with a supercharger, an air compressor provides air inlet with corresponding supercharging pressure, and lubricating oil is supplied to a lubricating oil pump depending on a laboratory auxiliary system and is conveyed to the inside of the diesel engine through a corresponding pipeline. Continuous lubricating oil supply must be ensured in the running process of the diesel engine, so that the surfaces of moving parts are well lubricated, the heat of the parts which are hot is taken away, and metal chips and impurities on the friction surfaces are removed. Once the conditions of power failure, oil pump failure and the like occur in the test process of the single-cylinder diesel engine, lubricating oil cannot be supplied in time, the failure caused by the single-cylinder diesel engine is difficult to estimate, and the abnormal abrasion of the kinematic pairs such as a bearing bush, a cylinder sleeve, a connecting rod bush and the like is easily caused, so that the test of the single-cylinder diesel engine is difficult to continue. Based on this, provided a single cylinder diesel emergency oil supply protection system, still can supply the lubricating oil of diesel engine equivalent in the short time when the oil pump trouble or proruption have a power failure, protection single cylinder diesel.
Disclosure of Invention
In view of the above, the invention aims to provide an emergency oil supply protection system for a single-cylinder diesel engine, so as to solve the problem of unexpected faults of the single-cylinder diesel engine caused by sudden faults of an oil pump and interruption of lubricating oil supply in the test process of the single-cylinder diesel engine.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an emergency oil supply protection system of a single-cylinder diesel engine comprises an air compressor, an air storage tank, an oil storage tank and a controller, wherein the air compressor is connected to the air storage tank through a first pipeline; a third electromagnetic valve and a first check valve are arranged on the fourth pipeline; a ball valve is arranged on the third pipeline, and the gear oil pump is positioned at an oil filling port of the oil storage tank; an oil pump and an oil pump are respectively installed in a large lubricating oil tank of a laboratory system, the oil pump passes through a fifth pipeline connected to a lubricating oil inlet of a single-cylinder diesel engine, a second pressure sensor and a second check valve are installed on the fifth pipeline, the fifth pipeline is located between the second pressure sensor and the second check valve and communicated with a fourth pipeline, the oil pump is connected to a lubricating oil outlet of the single-cylinder diesel engine through a sixth pipeline, and the air compressor, the first electromagnetic valve, the first pressure sensor, the second electromagnetic valve, the third electromagnetic valve, the second pressure sensor, the first oil pump and the second oil pump are all in signal connection to a controller.
Furthermore, the first pressure sensor and the second pressure sensor are all piezoresistor type sensors.
Furthermore, the second electromagnetic valve and the third electromagnetic valve are normally closed under the normal condition, when the second pressure sensor at the oil inlet of the diesel engine detects that the pressure of lubricating oil in the system is lower than 0.4MPa, signals are transmitted to the controller, the controller controls the second electromagnetic valve and the third electromagnetic valve to be opened instantly, and compressed air in the air storage tank pushes the lubricating oil in the oil storage tank to be rapidly supplemented into a lubricating oil inlet pipeline of the single-cylinder diesel engine through the first check valve; when the second pressure sensor detects that the pressure in the system reaches a set value, a signal is transmitted to the controller, and the controller controls the second electromagnetic valve and the third electromagnetic valve to be closed instantly.
Further, the pressure value of compressed air in the air storage tank is stabilized at 0.8MPa, when the pressure sensor II detects that the system pressure value is lower than 0.4MPa, the air storage tank can keep continuous supply of lubricating oil within 30 seconds, and meanwhile, the controller controls the air compressor to work in an instant power-on mode.
Compared with the prior art, the emergency oil supply protection system for the single-cylinder diesel engine has the following advantages:
(1) the emergency oil supply protection system for the single-cylinder diesel engine has two lubricating oil supply modes under conventional and emergency conditions, and greatly reduces abnormal abrasion of moving parts of the single-cylinder diesel engine caused by emergency conditions.
(2) The emergency oil supply protection system for the single cylinder diesel engine is additionally provided with the air storage tank, so that lubricating oil can be supplied to the single cylinder diesel engine in a short time even if the power is completely interrupted, and the diesel engine is protected.
(3) According to the emergency oil supply protection system for the single-cylinder diesel engine, the pressure sensor is arranged at the lubricating oil inlet of the single-cylinder diesel engine, when the lubricating oil pressure is detected to be lower than a set value, all valves of the emergency oil supply protection system are automatically opened, and the lubricating oil is pushed into a pipeline by compressed air to be supplied to the diesel engine.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of an emergency oil supply protection system of a single cylinder diesel engine according to an embodiment of the invention.
Description of reference numerals:
1-an air compressor; 2-a gas storage tank; 3-an oil storage tank; 4-a first electromagnetic valve; 5-safety valve; 6-pressure sensor number one; 7-second electromagnetic valve; 8-third electromagnetic valve; 9-ball valve; 10-one way valve; 11-pressure sensor number two; 12-one-way valve number two; 13-engine oil pump; 14-large lubricating oil tank of laboratory system; 15-oil pump number two; 16-a gear oil pump; a-oil tank filler opening; b-single cylinder diesel engine lubricant inlet; c-lubricating oil outlet of single cylinder diesel engine.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "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 used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
An emergency oil supply protection system of a single-cylinder diesel engine is shown in figure 1 and comprises an air compressor 1, an air storage tank 2, an oil storage tank 3, a first electromagnetic valve 4, a safety valve 5, a first pressure sensor 6, a second electromagnetic valve 7, a third electromagnetic valve 8, a ball valve 9, a first check valve 10, a second pressure sensor 11, a second check valve 12, a first engine oil pump 13, a large lubricating oil tank 14 of a laboratory system, a second engine oil pump 15, a gear oil pump 16 and a controller, wherein the air compressor 1 is connected to the air storage tank 2 through a first pipeline, the safety valve 5 is installed above the air storage tank 2, the first electromagnetic valve 4 is installed on the first pipeline, the air storage tank 2 is connected to the oil storage tank 3 through a second pipeline, the first pressure sensor 6 and the second electromagnetic valve 7 are installed on the second pipeline, the oil storage tank 3 is respectively connected to the gear oil pump 16 through a third pipeline, and a fourth pipeline is installed; a third electromagnetic valve 8 and a first check valve 10 are arranged on the fourth pipeline; a ball valve 9 is arranged on the third pipeline, and a gear oil pump 16 is positioned at an oil filling port A of the oil storage tank; a first engine oil pump 13 and a second engine oil pump 15 are respectively installed on a large lubricating oil tank 14 of a laboratory system, the first engine oil pump 13 is connected to a lubricating oil inlet B of a single-cylinder diesel engine through a fifth pipeline, a second pressure sensor 11 and a second check valve 12 are installed on the fifth pipeline, the fifth pipeline is located between the second pressure sensor 11 and the second check valve 12 and communicated with a fourth pipeline, the second engine oil pump 15 is connected to a lubricating oil outlet C of the single-cylinder diesel engine through a sixth pipeline, stable supply of lubricating oil of the single-cylinder diesel engine can be achieved through a composition part and a reserved interface, and the air compressor 1, the first electromagnetic valve 4, the first pressure sensor 6, the second electromagnetic valve 7, the third electromagnetic valve 8, the second pressure sensor 11, the first engine oil pump 13 and the second engine oil pump 15 are all connected to a controller in a signal mode. The controller is a PLC.
The first pressure sensor 6 and the second pressure sensor 11 are both piezoresistive sensors.
Under normal conditions, the second electromagnetic valve 7 and the third electromagnetic valve 8 are normally closed, when the second pressure sensor 11 at the oil inlet of the diesel engine detects that the pressure of lubricating oil in the system is lower than 0.4MPa, signals are transmitted to the controller, the controller controls the second electromagnetic valve 7 and the third electromagnetic valve 8 to be opened instantly, compressed air in the air storage tank 2 pushes the lubricating oil in the oil storage tank 3 to be rapidly supplemented into a pipeline B at the lubricating oil inlet of the single-cylinder diesel engine through the first check valve 10, and sufficient lubricating oil in the diesel engine is ensured; when the second pressure sensor 11 detects that the pressure in the system reaches a set value, a signal is transmitted to the controller, and the controller controls the second electromagnetic valve 7 and the third electromagnetic valve 8 to be closed instantly.
The pressure value of the compressed air in the air storage tank 2 is stabilized at 0.8MPa, and when the pressure sensor 11 detects that the system pressure value is lower than 0.4MPa, the air storage tank 2 can keep the continuous supply of lubricating oil within 30 seconds, and meanwhile, the air compressor 1 is also electrified to work instantly. Compressed air in the air storage tank 2 is used for pushing lubricating oil to flow, and the situation that power equipment cannot work due to power failure is avoided.
The emergency oil supply protection system for the single-cylinder diesel engine has the advantages that the emergency oil supply protection system for the single-cylinder diesel engine has two lubricating oil supply modes under the conventional condition and the emergency condition, and the abnormal abrasion of moving parts of the single-cylinder diesel engine caused by the emergency condition is greatly reduced. The air storage tank is added, so that lubricating oil can be supplied to the single-cylinder diesel engine in a short time even if the power is completely interrupted.
The working process of the emergency oil supply protection system of the single-cylinder diesel engine comprises the following steps:
and (3) air charging of the air storage tank 2: the staff opens air compressor 1 respectively through the controller, open solenoid valve 4, compressed air enters into gas holder 2 through first pipeline, after pressure sensor 6 in the second pipeline detected pressure and reached the setting value, give the controller with data real-time transfer, 4 self-closing of solenoid valve of controller control, simultaneously control air compressor 1 stop work, compressed air stores in gas holder 2 this moment, at gas holder 2 air entrainment in-process, solenoid valve 7 No. two is in the closed condition always.
Oil supplement of the oil storage tank 3: the staff is with outside oil feed line connection to batch oil tank oil filler A, later opens pipeline ball valve 9, and control gear oil pump 16 power supply operation afterwards leans on gear oil pump 16 to carry outside lubricating oil to batch oil tank 3 in, treat that the liquid level reaches the requirement scale after, the staff closes gear oil pump 16 to close pipeline ball valve 9.
Conventional lube oil supply: the staff opens the first oil pump 13, and the first oil pump 13 conveys the lubricating oil in the laboratory system lubricating oil tank 14 to the single-cylinder diesel engine lubricating oil inlet B through the second check valve 12, and the staff opens the second oil pump 15, and the lubricating oil in the single-cylinder diesel engine lubricating oil outlet C is pumped back to the laboratory system lubricating oil tank 14 through the second oil pump 15.
Emergency lubricating oil supply: when the second pressure sensor 11 detects that the pressure of the lubricating oil in the pipeline is lower than a set value or the PLC control program detects that the first oil pump 13 stops running, the controller controls the first electromagnetic valve 7, the second electromagnetic valve 8 and the air compressor 1 to be automatically opened, the compressed air in the air storage tank 2 directly pushes the lubricating oil in the oil storage tank 3 to be supplemented into the pipeline at the single-cylinder engine lubricating oil inlet B through the first check valve 10, after the set time is reached, the controller starts the second oil pump 15 to work, and the lubricating oil at the single-cylinder engine outlet C is pumped back into the testing room system lubricating oil tank 14 through the second oil pump 15.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides an emergent fuel feeding protection system of single cylinder diesel which characterized in that: the gear oil pump system comprises an air compressor, an air storage tank, an oil storage tank and a controller, wherein the air compressor is connected to the air storage tank through a first pipeline, a first electromagnetic valve is installed on the first pipeline, the air storage tank is connected to the oil storage tank through a second pipeline, a first pressure sensor and a second electromagnetic valve are installed on the second pipeline, and the oil storage tank is respectively connected to the gear oil pump through a third pipeline and a fourth pipeline; a third electromagnetic valve and a first check valve are arranged on the fourth pipeline; a ball valve is arranged on the third pipeline, and the gear oil pump is positioned at an oil filling port of the oil storage tank; an oil pump and an oil pump are respectively installed in a large lubricating oil tank of a laboratory system, the oil pump passes through a fifth pipeline connected to a lubricating oil inlet of a single-cylinder diesel engine, a second pressure sensor and a second check valve are installed on the fifth pipeline, the fifth pipeline is located between the second pressure sensor and the second check valve and communicated with a fourth pipeline, the oil pump is connected to a lubricating oil outlet of the single-cylinder diesel engine through a sixth pipeline, and the air compressor, the first electromagnetic valve, the first pressure sensor, the second electromagnetic valve, the third electromagnetic valve, the second pressure sensor, the first oil pump and the second oil pump are all in signal connection to a controller.
2. The emergency oil supply protection system for the single cylinder diesel engine as claimed in claim 1, wherein: the first pressure sensor and the second pressure sensor are piezoresistor type sensors.
3. The emergency oil supply protection system for the single cylinder diesel engine as claimed in claim 1, wherein: under normal conditions, the second electromagnetic valve and the third electromagnetic valve are normally closed, when the second pressure sensor at the oil inlet of the diesel engine detects that the pressure of lubricating oil in the system is lower than 0.4MPa, signals are transmitted to the controller, the controller controls the second electromagnetic valve and the third electromagnetic valve to be opened instantly, and compressed air in the air storage tank pushes the lubricating oil in the oil storage tank to be rapidly supplemented into a lubricating oil inlet pipeline of the single-cylinder diesel engine through the first check valve; when the second pressure sensor detects that the pressure in the system reaches a set value, a signal is transmitted to the controller, and the controller controls the second electromagnetic valve and the third electromagnetic valve to be closed instantly.
4. The emergency oil supply protection system for the single cylinder diesel engine as claimed in claim 1, wherein: the pressure value of compressed air in the air storage tank is stabilized at 0.8MPa, when the pressure sensor II detects that the system pressure value is lower than 0.4MPa, the air storage tank can keep continuous supply of lubricating oil within set time, and meanwhile, the controller controls the air compressor to work in an instant power-on mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111419339.1A CN114151164A (en) | 2021-11-26 | 2021-11-26 | Emergency oil supply protection system for single-cylinder diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111419339.1A CN114151164A (en) | 2021-11-26 | 2021-11-26 | Emergency oil supply protection system for single-cylinder diesel engine |
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| Publication Number | Publication Date |
|---|---|
| CN114151164A true CN114151164A (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111419339.1A Pending CN114151164A (en) | 2021-11-26 | 2021-11-26 | Emergency oil supply protection system for single-cylinder diesel engine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494013A (en) * | 1995-04-17 | 1996-02-27 | Helbig; Jim D. | Engine pre-lubricating system |
| US20110308493A1 (en) * | 2010-06-17 | 2011-12-22 | Mitchell Robert L | Pre start friction protection system |
| JP2017198090A (en) * | 2016-04-25 | 2017-11-02 | いすゞ自動車株式会社 | Lubrication oil supply device |
| CN108331635A (en) * | 2018-03-02 | 2018-07-27 | 路兆胜 | A kind of pressure lubrication mechanism |
| CN108487963A (en) * | 2018-03-02 | 2018-09-04 | 路兆胜 | A kind of pressure lubrication mechanism with classification assistant lubricating device |
-
2021
- 2021-11-26 CN CN202111419339.1A patent/CN114151164A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5494013A (en) * | 1995-04-17 | 1996-02-27 | Helbig; Jim D. | Engine pre-lubricating system |
| US20110308493A1 (en) * | 2010-06-17 | 2011-12-22 | Mitchell Robert L | Pre start friction protection system |
| JP2017198090A (en) * | 2016-04-25 | 2017-11-02 | いすゞ自動車株式会社 | Lubrication oil supply device |
| CN108331635A (en) * | 2018-03-02 | 2018-07-27 | 路兆胜 | A kind of pressure lubrication mechanism |
| CN108487963A (en) * | 2018-03-02 | 2018-09-04 | 路兆胜 | A kind of pressure lubrication mechanism with classification assistant lubricating device |
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