CN111810271B - Detection system and detection method for diesel engine protection device - Google Patents
Detection system and detection method for diesel engine protection device Download PDFInfo
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- CN111810271B CN111810271B CN202010722667.8A CN202010722667A CN111810271B CN 111810271 B CN111810271 B CN 111810271B CN 202010722667 A CN202010722667 A CN 202010722667A CN 111810271 B CN111810271 B CN 111810271B
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- diesel engine
- inlet pipe
- oil inlet
- stop valve
- pipe
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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
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
- F01M1/22—Indicating or safety devices concerning lubricant pressure rendering machines or engines inoperative or idling on pressure failure
Abstract
The invention relates to the technical field of diesel engine detection, in particular to a detection system and a detection method for a diesel engine protection device. The detection system comprises an oil inlet pipe I, an oil inlet pipe II, a connecting pipe, a first stop valve, a second stop valve and a pressure gauge, wherein the oil inlet pipe I and the oil inlet pipe II are respectively connected onto the connecting pipe, the first stop valve is arranged between the oil inlet pipe I and the connecting pipe, the second stop valve is arranged between the oil inlet pipe II and the connecting pipe, and the pressure gauge is arranged on the connecting pipe. The invention can ensure the accuracy of the action value of the oil pressure relay of the diesel engine and the reliability of the diesel engine protection device. The application is simple in operation and convenient to use.
Description
Technical Field
The invention relates to the technical field of diesel engine detection, in particular to a detection system and a detection method for a diesel engine protection device.
Background
The diesel locomotive is at the operation in-process, in order to prevent that the oil pressure from being low excessively causing bearing bush and tile grinding or other spare parts such as booster to damage, the low protection device of oil pressure has been set up, namely under the diesel locomotive diesel engine load operating mode, diesel engine rotational speed is not less than 720r/min, when being less than (180 + -10) kPa through diesel engine booster lubricating oil pressure, delay 5s, the action of the oil pressure relay in the pipeline, the action of diesel engine oil pressure protection device, the diesel engine can take place the uninstallation, "computer warning" alarm lamp lights and the record. When the diesel engine is in a starting state and the pressure of lubricating oil passing through the supercharger is less than (60 +/-10) kPa, an oil pressure relay in a pipeline acts, a diesel engine oil pressure protection device acts, the diesel engine stops, a microcomputer alarms and records faults. However, whether the oil pressure relay of the locomotive acts or not can not be known at present, and whether the diesel engine protection device can be unloaded and stopped normally or not can not be known.
Disclosure of Invention
The invention provides a detection system and a detection method for a diesel engine protection device, aiming at overcoming the defect that whether an oil pressure relay can normally act cannot be known at present.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a diesel engine protection device detecting system, is including advancing oil pipe one, advancing oil pipe two, connecting pipe, stop valve one, stop valve two and manometer, advances oil pipe one and advances oil pipe two and connect respectively on the connecting pipe, advances to be equipped with stop valve one between oil pipe one and the connecting pipe, advances to be equipped with stop valve two between oil pipe two and the connecting pipe, is equipped with the manometer on the connecting pipe.
According to another embodiment of the invention, the first oil inlet pipe and the second oil inlet pipe are both U-shaped pipes, one end of the first oil inlet pipe is connected with a plug, and one end of the second oil inlet pipe is connected with a plug.
According to another embodiment of the invention, the connecting pipe is composed of a U-shaped pipe body and a straight pipe, one end of the U-shaped pipe body is communicated with the first oil inlet pipe, the other end of the U-shaped pipe body is communicated with the second oil inlet pipe, the U-shaped pipe body is fixed and communicated with one end of the straight pipe, and the straight pipe is provided with a third stop valve.
According to another embodiment of the invention, it is further comprised that the pressure gauge has a measurement range of 0-200kPa
A detection method of a detection system of a diesel engine protection device comprises the following steps:
A. when the locomotive is in a shutdown state, connecting an inlet of a diesel oil booster oil pressure relay with one end of an oil inlet pipe I, connecting the other end of the oil inlet pipe I with a plug, connecting an outlet of the diesel oil booster oil pressure relay with one end of an oil inlet pipe II, connecting the other end of the oil inlet pipe II with the plug, closing a stop valve III, and opening the stop valve I and the stop valve II;
B. the locomotive is started, when a diesel engine of the diesel locomotive is in a load operation condition, the first stop valve is closed when the rotating speed of the diesel engine is not less than 720r/min, when lubricating oil passes through a supercharger of the diesel engine and a pressure gauge displays 200kPa, a handle of the first stop valve is rotated, the pressure in a pipeline is controlled to enable the reading of the pressure gauge to be reduced by no more than 2kPa, the reading of the pressure gauge is reduced for waiting for 5s once, whether the diesel engine is unloaded or not is observed, when the unloading rotating speed of the diesel engine is reduced, the reading of the pressure gauge is recorded, whether an alarm lamp of a microcomputer screen of a cab is lightened or not is observed, whether alarm information for displaying low oil pressure of the diesel engine exists or not is observed, and the record is made;
C. during the locomotive starts, close stop valve one, open stop valve three, when passing through diesel engine booster lubricating oil, and the manometer shows when 80kPa, rotate stop valve three's handle, control pipeline internal pressure makes the manometer reading fall the width of cloth and is no longer than 2kPa, observe whether the diesel engine shuts down, when the diesel engine takes place the shutdown protection, record manometer reading to whether observation cab microcomputer screen alarm lamp shows brightly, have or not to show the low alarm information of diesel engine oil pressure, make the record at last, the experiment is ended.
The invention has the beneficial effects that the accuracy of the action value of the oil pressure relay of the diesel engine and the reliability of the diesel engine protection device can be ensured. The application is simple in operation and convenient to use.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the invention;
in the figure, 1, an oil inlet pipe I, 2, an oil inlet pipe II, 3, a connecting pipe, 4, a stop valve I, 5, a stop valve II, 6, a pressure gauge, 7, a plug and 8, a stop valve III are arranged.
Detailed Description
Fig. 1 is a schematic structural diagram of the invention.
The technical scheme adopted by the invention for solving the technical problems is as follows:
as shown in the attached drawing 1, a diesel engine protection device detection system, including advancing oil pipe 1, advancing oil pipe two 2, connecting pipe 3, stop valve 4, stop valve two 5 and manometer 6, advance oil pipe 1 and advance oil pipe two 2 and connect respectively on connecting pipe 3, advance to be equipped with stop valve 4 between oil pipe 1 and the connecting pipe 3, advance to be equipped with stop valve two 5 between oil pipe two 2 and the connecting pipe 3, be equipped with manometer 6 on the connecting pipe 3. The oil inlet pipe I1 and the oil inlet pipe II 2 are both U-shaped pipes, one end of the oil inlet pipe I1 is connected with a plug 7, and one end of the oil inlet pipe II 2 is connected with the plug 7. The connecting pipe 3 is composed of a U-shaped pipe body and a straight pipe, one end of the U-shaped pipe body is communicated with the oil inlet pipe I1, the other end of the U-shaped pipe body is communicated with the oil inlet pipe II 2, the U-shaped pipe body is fixed and communicated with one end of the straight pipe, and the straight pipe is provided with a stop valve III 8. The pressure gauge 6 measures in the range of 0-200 kPa.
A detection method of a detection system of a diesel engine protection device comprises the following steps:
A. when the locomotive is in a shutdown state, an inlet of a diesel oil booster oil pressure relay is connected with one end of a first oil inlet pipe 1, the other end of the first oil inlet pipe 1 is connected with a plug 7, an outlet of the diesel oil booster oil pressure relay is connected with one end of a second oil inlet pipe 2, the other end of the second oil inlet pipe 2 is connected with the plug 7, a third stop valve 8 is closed, and the first stop valve 4 and the second stop valve 5 are opened;
B. the locomotive is started, when a diesel engine of the diesel locomotive is in a load operation condition, the rotating speed of the diesel engine is not less than 720r/min, a first stop valve 4 is closed, when lubricating oil passes through a supercharger of the diesel engine and a pressure gauge 6 displays 200kPa, a handle of the first stop valve 4 is rotated, the pressure in a pipeline is controlled to enable the reading of the pressure gauge 6 to be reduced by no more than 2kPa, the reading is reduced for one time for waiting for 5s, whether the diesel engine is unloaded or not is observed, when the unloading rotating speed of the diesel engine is reduced, the reading of the pressure gauge is recorded, whether an alarm lamp of a microcomputer screen of a cab is lightened or not is observed, whether alarm information for displaying low oil pressure of the diesel engine exists or not is observed, and the record is made;
C. during the locomotive starts, close stop valve 4, open stop valve three 8, when passing through diesel engine booster lubricating oil, and manometer 6 shows when 80kPa, rotate stop valve three 8's handle, control pipeline internal pressure makes the 6 readings of manometer fall the amplitude and is not more than 2kPa, observe whether the diesel engine shuts down, when the diesel engine takes place the shutdown protection, record manometer reading, and whether observe the driver's cabin microcomputer screen alarm lamp and show, have or not to show the low alarm information of diesel engine oil pressure, make the record at last, the experiment is ended.
During the test, if the diesel engine is found to be unable to unload (shut down) normally, it is indicated that a problem has occurred with the responsive relay or protection device, and the diesel engine engineer is first checked for an unload (shut down) alarm by disconnecting the 549 line on X25:5 (line 968 on X12: 23). If the alarm cannot be unloaded (shut down), a possible line connection error is checked. Secondly, the oil pressure relay may be replaced to continue the test due to the fact that the action values of the oil pressure relay are not set correctly. When the diesel engine is unloaded (stopped) in the test process, the pressure displayed by the pressure gauge 6 is not consistent with the set protection value, and the oil pressure relay is replaced to continue the test.
Due to the influence of the inner diameter of the pipeline in the manufacturing test system, when the diesel engine unloading protection test is carried out in the step C, if the first stop valve 4 is closed and the pressure of the test system is not reduced to the action value of the oil pressure relay, the third stop valve 8 can be opened for operation, and in order to ensure the accuracy and the reliability of the test system, the pressure gauge 6 in the test system can be ensured to be used within the validity period of identification.
Claims (3)
1. A diesel engine protection device detection system is characterized by comprising a first oil inlet pipe (1), a second oil inlet pipe (2), a connecting pipe (3), a first stop valve (4), a second stop valve (5) and a pressure gauge (6), wherein the first oil inlet pipe (1) and the second oil inlet pipe (2) are respectively connected to the connecting pipe (3), the first stop valve (4) is arranged between the first oil inlet pipe (1) and the connecting pipe (3), the second stop valve (5) is arranged between the second oil inlet pipe (2) and the connecting pipe (3), the pressure gauge (6) is arranged on the connecting pipe (3), the first oil inlet pipe (1) and the second oil inlet pipe (2) are both U-shaped pipes, one end of the first oil inlet pipe (1) is connected with a plug (7), one end of the second oil inlet pipe (2) is connected with a plug (7), the connecting pipe (3) is composed of a U-shaped pipe body and a straight pipe, one end of the U-shaped pipe body is communicated with the first oil inlet pipe (1), the other end of the U-shaped pipe body is communicated with the oil inlet pipe II (2), the U-shaped pipe body is fixed and communicated with one end of the straight pipe, and the straight pipe is provided with a stop valve III (8).
2. The diesel engine protector detection system of claim 1, characterized in that the pressure gauge (6) measures in the range of 0-200 kPa.
3. The detection method of the detection system of the diesel engine protection device according to any one of the claims 1 to 2, characterized by comprising the following steps:
A. when the locomotive is in a shutdown state, connecting an inlet of a diesel oil booster oil pressure relay with one end of a first oil inlet pipe (1), connecting the other end of the first oil inlet pipe (1) with a plug (7), connecting an outlet of the diesel oil booster oil pressure relay with one end of a second oil inlet pipe (2), connecting the other end of the second oil inlet pipe (2) with the plug (7), closing a third stop valve (8), and opening the first stop valve (4) and the second stop valve (5);
B. the locomotive is started, when a diesel engine of the diesel locomotive is in a load operation condition, when the rotating speed of the diesel engine is not less than 720r/min, a first stop valve (4) is closed, when lubricating oil passes through a supercharger of the diesel engine and a pressure gauge (6) displays 200kPa, a handle of the first stop valve (4) is rotated, the pressure in a pipeline is controlled to enable the reading amplitude of the pressure gauge (6) to be less than 2kPa, the reading amplitude is reduced for 5s, whether the diesel engine is unloaded or not is observed, when the unloading rotating speed of the diesel engine is reduced, the reading of the pressure gauge is recorded, whether an alarm lamp of a microcomputer screen of a cab is lightened or not is observed, whether alarm information showing the low oil pressure of the diesel engine exists or not is judged, and the record is made;
C. during the locomotive starts, close stop valve one (4), open stop valve three (8), when through diesel engine booster lubricating oil, and manometer (6) show during 80kPa, the handle of rotation stop valve three (8), control pipeline internal pressure makes manometer (6) reading amplitude reduction be no longer than 2kPa, observe whether the diesel engine shuts down, when the diesel engine takes place the shutdown protection, record manometer reading, and whether it shows to observe cab microcomputer screen alarm lamp, have or not to show the low alarm information of diesel engine oil pressure, make the record at last, the test is ended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010722667.8A CN111810271B (en) | 2020-07-24 | 2020-07-24 | Detection system and detection method for diesel engine protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010722667.8A CN111810271B (en) | 2020-07-24 | 2020-07-24 | Detection system and detection method for diesel engine protection device |
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| CN111810271A CN111810271A (en) | 2020-10-23 |
| CN111810271B true CN111810271B (en) | 2021-11-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2066366A (en) * | 1979-12-22 | 1981-07-08 | Daimler Benz Ag | A starting and stopping system for an air-compressing fuel-injection internal combustion engine |
| CN102748089A (en) * | 2012-07-04 | 2012-10-24 | 南车成都机车车辆有限公司 | Novel diesel engine main oil conduit system |
| CN104234824A (en) * | 2014-09-24 | 2014-12-24 | 南车成都机车车辆有限公司 | Internal combustion locomotive diesel engine turbocharger oil supply system and control method of internal combustion locomotive diesel engine turbocharger oil supply system |
| CN104863702A (en) * | 2015-06-12 | 2015-08-26 | 徐旻睿 | Diesel vehicle turbocharging lubrication device |
| CN109253132A (en) * | 2018-11-13 | 2019-01-22 | 中山市鑫海精密制造科技有限公司 | A kind of hydraulic system for oil cylinder pressure maintaining test |
-
2020
- 2020-07-24 CN CN202010722667.8A patent/CN111810271B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2066366A (en) * | 1979-12-22 | 1981-07-08 | Daimler Benz Ag | A starting and stopping system for an air-compressing fuel-injection internal combustion engine |
| CN102748089A (en) * | 2012-07-04 | 2012-10-24 | 南车成都机车车辆有限公司 | Novel diesel engine main oil conduit system |
| CN104234824A (en) * | 2014-09-24 | 2014-12-24 | 南车成都机车车辆有限公司 | Internal combustion locomotive diesel engine turbocharger oil supply system and control method of internal combustion locomotive diesel engine turbocharger oil supply system |
| CN104863702A (en) * | 2015-06-12 | 2015-08-26 | 徐旻睿 | Diesel vehicle turbocharging lubrication device |
| CN109253132A (en) * | 2018-11-13 | 2019-01-22 | 中山市鑫海精密制造科技有限公司 | A kind of hydraulic system for oil cylinder pressure maintaining test |
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| CN111810271A (en) | 2020-10-23 |
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