Diesel engine test lubricating oil system

Abstract

The utility model provides a diesel engine test lubricating oil system which comprises a first test bench, a second test bench and an oil conveying pipeline, the first test bench is used for placing a first diesel engine, and the second test bench is used for placing a second diesel engine. A first oil tank, a second oil tank, a first lubricating oil pump, a second lubricating oil pump, a first plate cooler, a second plate cooler, a first crosshead lubricating oil pump and a second crosshead lubricating oil pump are arranged on the oil conveying pipeline. An outlet of the first lubricating oil pump is communicated with an inlet of the first plate type cooler, and an outlet of the first plate type cooler is communicated with a first oil inlet of the first test bed position and a first oil inlet of the second test bed position. An outlet of the second lubricating oil pump is communicated with an inlet of the second plate cooler, and an outlet of the second plate cooler is communicated with a second oil inlet of the first test bench position and a second oil inlet of the second test bench position. The problem of low diesel engine bench test efficiency in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine bench testing, and in particular to a diesel engine testing lubricating oil system. Background Technology

[0002] After manufacturing and assembly, marine low-speed diesel engines require bench tests and oil immersion tests. The oil immersion test thoroughly cleans the engine's internal components and piping system of dust, metal shavings, powder, and other debris to prevent accelerated wear and other malfunctions caused by a dirty lubricating oil system during the testing phase. This includes preventing wear on main bearings, crosshead bearings, connecting rod big end bearings, and various other bearings, which could damage the lubricating oil film and lead to bearing seizure, cylinder scoring, and other failures. The bench test simulates various operating conditions of the diesel engine at 25%, 50%, 75%, 90%, 100%, and 110% of its rated capacity. The engine is adjusted to full speed, half speed, slow speed, forward rotation, or reverse rotation. Data from the main and auxiliary engine systems under different operating conditions is recorded and saved, and the operating status of the diesel engine is monitored in real time.

[0003] The bench testing of marine low-speed diesel engines requires an auxiliary system to provide energy to the engine. This auxiliary system mainly includes a lubricating oil supply system, a fuel supply system, a seawater system, a high-temperature water system, a compressed air system, a cylinder lubricating oil supply system, and an exhaust system. The lubricating oil system accounts for the largest proportion of the investment in the entire auxiliary system. Currently, diesel engine testing typically involves one auxiliary system corresponding to two test benches. On one bench, the diesel engine is being assembled or undergoing fuel injection testing, while on the other bench, the engine is undergoing bench testing. The fuel injection test cycle is usually 3 to 4 days. However, with the International Maritime Organization (IMO) setting a goal of achieving net-zero emissions by around 2050 and establishing 2030 and 2040 as key milestones, and the widespread application of low-carbon dual-fuel diesel engines, the time required for bench testing and auxiliary systems has increased compared to traditional diesel engines, typically reaching 8 to 10 days.

[0004] With the improvement of assembly technology, the time occupied by diesel engine assembly on test benches has been shortened. It is common to encounter situations where one diesel engine is undergoing bench testing while the other awaits oil injection testing. Existing auxiliary systems can only support bench testing of one diesel engine at a time, failing to meet the increasingly sophisticated production needs of assembly processes, resulting in low equipment utilization. As OEMs increase order volumes and assembly efficiency improves, the existing number of lubrication systems and test benches is insufficient to meet the demands of efficient delivery, leading to low utilization rates of test benches and auxiliary systems, severely restricting diesel engine delivery rates.

[0005] It is evident that existing technologies suffer from low efficiency in diesel engine bench testing. Utility Model Content

[0006] This invention provides a diesel engine test lubricating oil system, which solves the problem of low efficiency in diesel engine bench testing in the prior art.

[0007] This utility model provides a diesel engine test lubricating oil system, including a first test stand, a second test stand, and an oil supply pipeline. The first test stand is used to place a first diesel engine, and the second test stand is used to place a second diesel engine. The oil supply pipeline is equipped with a first oil tank, a second oil tank, a first lubricating oil pump, a second lubricating oil pump, a first plate cooler, a second plate cooler, a first crosshead lubricating oil pump, and a second crosshead lubricating oil pump.

[0008] The first test bench has a first oil inlet, a second oil inlet, a first oil outlet, and a second oil outlet. The second test bench also has a first oil inlet, a second oil inlet, a first oil outlet, and a second oil outlet. The first oil outlet of the first test bench and the first oil outlet of the second test bench are respectively connected to the inlet of the first oil tank. The second oil outlet of the first test bench and the second oil outlet of the second test bench are respectively connected to the inlet of the second oil tank. The first outlet of the first oil tank and the first outlet of the second oil tank are respectively connected to the inlet of the first lubricating oil pump. The second outlet of the first oil tank and the second outlet of the second oil tank are respectively connected to the inlet of the second lubricating oil pump. The outlet of the first lubricating oil pump is connected to the inlet of the first plate cooler. The outlet of the first plate cooler is connected to the first oil inlet of the first test bench and the first oil inlet of the second test bench. The outlet of the second lubricating oil pump is connected to the inlet of the second plate cooler. The outlet of the second plate cooler is connected to the second oil inlet of the first test bench and the second oil inlet of the second test bench.

[0009] The inlet of the first crosshead lubricating oil pump is connected to the outlet of the first plate cooler, and the outlet of the first crosshead lubricating oil pump is connected to the first oil inlet of the first test bench and the first oil inlet of the second test bench. The inlet of the second crosshead lubricating oil pump is connected to the outlet of the second plate cooler, and the outlet of the second crosshead lubricating oil pump is connected to the second oil inlet of the first test bench and the second oil inlet of the second test bench.

[0010] This invention, by setting up a first oil tank, a second oil tank, a first lubricating oil pump, a second lubricating oil pump, a first plate cooler, a second plate cooler, a first crosshead lubricating oil pump, and a second crosshead lubricating oil pump on the oil pipeline, and by rationally designing the connection relationship between each device, enables the first test bench and the second test bench to have multiple test conditions, such as simultaneous bench tests, simultaneous oil injection tests, and one engine oil injection test while the other engine bench tests. This significantly improves the utilization rate of the test bench and the entire test system, and helps to improve the delivery rate of diesel engines.

[0011] Optionally, the first outlet of the first oil tank is equipped with a first control valve, and the second outlet of the first oil tank is equipped with a second control valve. The first outlet of the second oil tank is equipped with a third control valve, and the second outlet of the second oil tank is equipped with a fourth control valve.

[0012] Optionally, the first oil outlet of the first test bench is equipped with a first oil outlet valve, the second oil outlet of the first test bench is equipped with a second oil outlet valve, the first oil outlet of the second test bench is equipped with a third oil outlet valve, and the second oil outlet of the second test bench is equipped with a fourth oil outlet valve.

[0013] Optionally, a third lubricating oil pump is also installed on the oil pipeline.

[0014] The first outlet of the first oil tank, the first outlet of the second oil tank, the second outlet of the first oil tank, and the second outlet of the second oil tank are all connected to the inlet of the third lubricating oil pump. The outlet of the third lubricating oil pump is connected to the inlet of the first plate cooler and the inlet of the second plate cooler.

[0015] Optionally, the oil pipeline is also equipped with a first coarse filter, a second coarse filter, and a third coarse filter.

[0016] The first coarse filter is located at the inlet of the first lubricating oil pump, the second coarse filter is located at the inlet of the second lubricating oil pump, and the third coarse filter is located at the inlet of the third lubricating oil pump.

[0017] Optionally, the oil pipeline is also equipped with a first semi-fine filter, a second semi-fine filter, and a third semi-fine filter.

[0018] The first semi-fine filter is located at the outlet of the first lubricating oil pump, the second semi-fine filter is located at the outlet of the second lubricating oil pump, and the third semi-fine filter is located at the outlet of the third lubricating oil pump.

[0019] Optionally, a first magnetic filter and a second magnetic filter are also provided on the oil pipeline.

[0020] The first magnetic filter is located between the outlet of the first semi-fine filter and the inlet of the first plate cooler, and the second magnetic filter is located between the outlet of the second semi-fine filter and the inlet of the second plate cooler.

[0021] Optionally, the oil pipeline is also equipped with a first polymer filter and a second polymer filter.

[0022] The first polymer filter is located between the outlet of the first plate cooler and the inlet of the first crosshead lubricating oil pump, and the second polymer filter is located between the outlet of the second plate cooler and the inlet of the second crosshead lubricating oil pump.

[0023] Optionally, the first oil tank is equipped with a first magnetic induction heater, and the second oil tank is equipped with a second magnetic induction heater.

[0024] Optionally, the outlet of the first plate cooler is equipped with a first temperature control valve, and the outlet of the second plate cooler is equipped with a second temperature control valve.

[0025] The diesel engine test lubricating oil system of this utility model integrates heating, cooling, filtration and temperature control functions, ensuring the stability and reliability of the lubricating oil during the test and improving the test efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the diesel engine test lubrication oil system according to an embodiment of the present invention. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the structure of the diesel engine test lubrication oil system according to an embodiment of the present invention. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the structure of the diesel engine test lubrication oil system according to an embodiment of the present invention. Figure 3 ;

[0029] Figure 4 This is a schematic diagram of the structure of the diesel engine test lubrication oil system according to an embodiment of the present invention. Figure 4 ;

[0030] Figure 5 This is a schematic diagram of the structure of the diesel engine test lubrication oil system according to an embodiment of the present invention. Figure 5 .

[0031] Explanation of reference numerals in the attached figures:

[0032] 1: Test lubrication system for diesel engine;

[0033] 10: Oil pipelines;

[0034] 11: First test bench position; 1101: First oil inlet valve; 1102: Second oil inlet valve; 1103: Third oil inlet valve; 1104: Fourth oil inlet valve; 1201: Fifth oil inlet valve; 1202: Sixth oil inlet valve; 1203: Seventh oil inlet valve; 1204: Eighth oil inlet valve; 113: First oil outlet; 114: Second oil outlet;

[0035] 12: Second test bench position; 123: First oil outlet; 124: Second oil outlet;

[0036] 131: First oil tank; 1311: First outlet; 1312: Second outlet; 1313: First magnetic induction heater; 132: Second oil tank; 1321: First outlet; 1322: Second outlet; 1323: Second magnetic induction heater;

[0037] 1401: Valve 1; 1402: Valve 2; 1403: Valve 3; 1404: Valve 4; 1405: Valve 5; 1406: Valve 6; 1407: Valve 7; 1408: Valve 8; 1409: Valve 9; 1410: Valve 10;

[0038] 141: First lubricating oil pump; 142: Second lubricating oil pump; 143: Third lubricating oil pump;

[0039] 151: First plate cooler; 1511: First thermostatic valve; 152: Second plate cooler; 1521: Second thermostatic valve; 1601: Valve eleven; 1602: Valve twelfth; 1603: Valve thirteenth; 1604: Valve fourteenth; 161: First crosshead lubricating pump; 162: Second crosshead lubricating pump;

[0040] 101: First control valve; 102: Second control valve; 103: Third control valve; 104: Fourth control valve; 105: First outlet valve; 106: Second outlet valve; 107: Third outlet valve; 108: Fourth outlet valve;

[0041] 171: First coarse filter; 172: Second coarse filter; 173: Third coarse filter; 174: First semi-fine filter; 175: Second semi-fine filter; 176: Third semi-fine filter; 181: First magnetic filter; 182: Second magnetic filter; 183: First polymer filter; 184: Second polymer filter. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0043] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0045] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0046] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0048] Please see Figure 1 This utility model provides a diesel engine test lubricating oil system 1, including a first test bench 11, a second test bench 12, and an oil supply pipeline 10. The first test bench 11 is used to place a first diesel engine (not shown in the figure), and the second test bench 12 is used to place a second diesel engine (not shown in the figure). The oil supply pipeline 10 is equipped with a first oil tank 131, a second oil tank 132, a first lubricating oil pump 141, a second lubricating oil pump 142, a first plate cooler 151, a second plate cooler 152, a first crosshead lubricating oil pump 161, and a second crosshead lubricating oil pump 162.

[0049] The first test bench 11 has a first oil inlet (not shown), a second oil inlet (not shown), a first oil outlet 113, and a second oil outlet 114. The second test bench 12 has a first oil inlet (not shown), a second oil inlet (not shown), a first oil outlet 123, and a second oil outlet 124. The first oil outlet 113 of the first test bench 11 and the first oil outlet 123 of the second test bench 12 are respectively connected to the inlet of the first oil tank 131. The second oil outlet 114 of the first test bench 11 and the second oil outlet 124 of the second test bench 12 are respectively connected to the inlet of the second oil tank 132. The first outlet 1311 of the first oil tank 131 and the first outlet 1321 of the second oil tank 132 are respectively connected to the inlet of the first lubricating oil pump 141. The second outlet 1312 of the first oil tank 131 and the second outlet 1322 of the second oil tank 132 are respectively connected to the inlet of the second lubricating oil pump 142. The outlet of the first lubricating oil pump 141 is connected to the inlet of the first plate cooler 151, and the outlet of the first plate cooler 151 is connected to the first oil inlet of the first test bench position 11 and the first oil inlet of the second test bench position. The outlet of the second lubricating oil pump 142 is connected to the inlet of the second plate cooler 152, and the outlet of the second plate cooler 152 is connected to the second oil inlet of the first test bench position 11 and the second oil inlet of the second test bench position.

[0050] The inlet of the first crosshead lubricating oil pump 161 is connected to the outlet of the first plate cooler 151, and the outlet of the first crosshead lubricating oil pump 161 is connected to the first oil inlet of the first test bench position 11 and the first oil inlet of the second test bench position. The inlet of the second crosshead lubricating oil pump 162 is connected to the outlet of the second plate cooler 152, and the outlet of the second crosshead lubricating oil pump 162 is connected to the second oil inlet of the first test bench position 11 and the second oil inlet of the second test bench position 12.

[0051] In one embodiment, the first oil inlet of the first test bench 11 is provided with multiple oil inlet valves, such as the first oil inlet valve 1101 and the third oil inlet valve 1103, and the second oil inlet of the first test bench 11 is provided with multiple oil inlet valves, such as the second oil inlet valve 1102 and the fourth oil inlet valve 1104. The first oil inlet of the second test bench 12 is provided with multiple oil inlet valves, such as the fifth oil inlet valve 1201 and the seventh oil inlet valve 1203, and the second oil inlet of the second test bench 12 is provided with multiple oil inlet valves, such as the sixth oil inlet valve 1202 and the eighth oil inlet valve 1204.

[0052] Furthermore, the outlet of the first plate cooler 151 is connected to the first oil inlet of the first test bench position 11 via the first oil inlet valve 1101, and to the first oil inlet of the second test bench position 12 via the fifth oil inlet valve 1201. The outlet of the second plate cooler 152 is connected to the second oil inlet of the first test bench position 11 via the second oil inlet valve 1102, and to the second oil inlet of the second test bench position 12 via the sixth oil inlet valve 1202. The outlet of the first crosshead lubricating oil pump 161 is connected to the first oil inlet of the first test bench position 11 via the third oil inlet valve 1103, and to the first oil inlet of the second test bench position 12 via the seventh oil inlet valve 1203. The outlet of the second crosshead lubricating oil pump 162 is connected to the second oil inlet of the first test bench position 11 via the fourth oil inlet valve 1104, and to the second oil inlet of the second test bench position 12 via the eighth oil inlet valve 1204.

[0053] With the above structure, this utility model can deliver lubricating oil to the first test bench 11 via four paths: one path via the first plate cooler 151, one path without the first plate cooler 151, one path via the first crosshead lubricating oil pump 161, and one path without the first crosshead lubricating oil pump 161. This enables the switching of four test conditions for the first test bench 11. Furthermore, it can deliver lubricating oil to the second test bench 12 via four paths: one path via the second plate cooler 152, one path without the second plate cooler 152, one path via the second crosshead lubricating oil pump 162, and one path without the second crosshead lubricating oil pump 162. This enables the switching of four test conditions for the second test bench 12.

[0054] As can be seen, by setting a first oil tank 131, a second oil tank 132, a first lubricating oil pump 141, a second lubricating oil pump 142, a first plate cooler 151, a second plate cooler 152, a first crosshead lubricating oil pump 161, and a second crosshead lubricating oil pump 162 on the oil pipeline 10, and by rationally designing the connection relationship between each device, the first test bench 11 and the second test bench 12 can have multiple test conditions, such as simultaneously conducting bench tests, simultaneously conducting oil injection tests, and conducting oil injection tests on one engine while conducting bench tests on the other engine. This significantly improves the utilization rate of the test bench and the entire test system, and helps to improve the delivery rate of diesel engines.

[0055] Furthermore, in one embodiment, the first outlet 1311 of the first oil tank 131 is provided with a first control valve 101, and the second outlet 1312 of the first oil tank 131 is provided with a second control valve 102. The first outlet 1321 of the second oil tank 132 is provided with a third control valve 103, and the second outlet 1322 of the second oil tank 132 is provided with a fourth control valve 104. These control valves can control the connection between the first oil tank 131 and the first lubricating oil pump 141 and the second lubricating oil pump 142, as well as the connection between the second oil tank 132 and the first lubricating oil pump 141 and the second lubricating oil pump 142, thereby improving the controllability of the entire system.

[0056] Furthermore, in one embodiment, the first oil outlet 113 of the first test bench 11 is equipped with a first oil outlet valve 105, the second oil outlet 114 of the first test bench 11 is equipped with a second oil outlet valve 106, the first oil outlet 123 of the second test bench 12 is equipped with a third oil outlet valve 107, and the second oil outlet 124 of the second test bench 12 is equipped with a fourth oil outlet valve 108. These valves can control the connection between the first test bench 11 and the first oil tank 131 and the second oil tank 132, and control the connection between the second test bench 12 and the first oil tank 131 and the second oil tank 132, thereby improving the controllability of the entire system.

[0057] Furthermore, in one embodiment, the oil pipeline 10 is also equipped with a third lubricating oil pump 143. The first outlet 1311 of the first oil tank 131, the first outlet 1321 of the second oil tank 132, the second outlet 1312 of the first oil tank 131, and the second outlet 1322 of the second oil tank 132 are all connected to the inlet of the third lubricating oil pump 143. The outlet of the third lubricating oil pump 143 is connected to the inlet of the first plate cooler 151 and the inlet of the second plate cooler 152. The third lubricating oil pump 143 serves as a backup pump and can be activated when the first lubricating oil pump 141 and / or the second lubricating oil pump 142 fails or is under maintenance.

[0058] In a further embodiment, the oil pipeline 10 is also equipped with a first coarse filter 171, a second coarse filter 172, and a third coarse filter 173 for preliminary filtration of the lubricating oil. The first coarse filter 171 is located at the inlet of the first lubricating oil pump 141, the second coarse filter 172 is located at the inlet of the second lubricating oil pump 142, and the third coarse filter 173 is located at the inlet of the third lubricating oil pump 143. Furthermore, the oil pipeline 10 is also equipped with a first semi-fine filter 174, a second semi-fine filter 175, and a third semi-fine filter 176 for secondary filtration of the lubricating oil.

[0059] The first semi-fine filter 174 is located at the outlet of the first lubricating oil pump 141, the second semi-fine filter 175 is located at the outlet of the second lubricating oil pump 142, and the third semi-fine filter 176 is located at the outlet of the third lubricating oil pump 143.

[0060] In specific implementation methods, such as Figure 1 As shown, the oil pipeline 10 is also equipped with valves 1-1401 to 1410. Specifically, valve 3 1403 is located at the inlet of the first coarse filter 171, valve 5 1405 at the inlet of the second coarse filter 172, valve 4 1404 at the inlet of the third coarse filter 173, valve 6 1406 at the outlet of the first semi-fine filter 174, valve 8 1408 at the outlet of the second semi-fine filter 175, and valve 7 1407 at the outlet of the third semi-fine filter 176. The inlet and outlet of valve 1 1401 are connected to the outlet of valve 3 1403 and the inlet of valve 4 1404, respectively; the inlet and outlet of valve 2 1402 are connected to the inlet of valve 4 1404 and the inlet of valve 5 1405, respectively. The inlet and outlet of valve 9 1409 are connected to the outlet of valve 6 1406 and the outlet of valve 7 1407, respectively. The inlet and outlet of valve 10 1410 are connected to the outlet of valve 7 1407 and the outlet of valve 8 1408, respectively. Through the above valves 1 1401 to 10 1410, the connection between the three lubricating oil pumps and their corresponding filters with the upstream and downstream can be controlled, thereby realizing flexible switching of the lubricating oil pumps.

[0061] Furthermore, the inlet and outlet of the first crosshead lubricating pump 161 are respectively equipped with valve 11 1601 and valve 12 1602, which are used to control the connection between the pipeline section where the first crosshead lubricating pump 161 is located and the first plate cooler 151. The inlet and outlet of the second crosshead lubricating pump 162 are respectively equipped with valve 13 1603 and valve 14 1604, which are used to control the connection between the pipeline section where the second crosshead lubricating pump 162 is located and the second plate cooler 152.

[0062] Furthermore, in one embodiment, the oil pipeline 10 is also provided with a first magnetic filter 181 and a second magnetic filter 182 for adsorbing metal particles in the lubricating oil. The first magnetic filter 181 is located between the outlet of the first semi-fine filter 174 and the inlet of the first plate cooler 151, and the second magnetic filter 182 is located between the outlet of the second semi-fine filter 175 and the inlet of the second plate cooler 152.

[0063] In a further embodiment, the oil pipeline 10 is also provided with a first polymer filter 183 and a second polymer filter 184 for fine filtration of the lubricating oil. The first polymer filter 183 is located between the outlet of the first plate cooler 151 and the inlet of the first crosshead lubricating oil pump 161, and the second polymer filter 184 is located between the outlet of the second plate cooler 152 and the inlet of the second crosshead lubricating oil pump 162.

[0064] In a further embodiment, a first magnetic induction heater 1313 is provided in the first oil tank 131, and a second magnetic induction heater 1323 is provided in the second oil tank 132. A first temperature control valve 1511 is provided at the outlet of the first plate cooler 151, and a second temperature control valve 1521 is provided at the outlet of the second plate cooler 152. The first and second temperature control valves 1511 and 1521 are used to monitor the temperature of the lubricating oil in real time. When the target temperature is reached, the temperature control valves open to allow the lubricating oil to flow downstream; if the target temperature is not reached, the temperature control valves close, allowing the lubricating oil to flow back into the cooler for continued cooling.

[0065] The diesel engine test lubricating oil system of this utility model integrates heating, cooling, filtration and temperature control functions, ensuring the stability and reliability of the lubricating oil during the test and improving the test efficiency.

[0066] According to the testing requirements, the diesel engine test lubricating oil system 1 of this embodiment can be used to simultaneously conduct bench tests and oil injection tests on the first test bench 11 and the second test bench 12, or one engine can undergo an oil injection test while the other engine undergoes a bench test. The following is a brief description of the specific operation process using a marine low-speed diesel engine as an example:

[0067] like Figure 2 As shown, when the first test bench 11 and the second test bench 12 are simultaneously conducting bench tests, the second control valve 102, the third control valve 103, the third valve 1403, the fifth valve 1405, the sixth valve 1406, the eighth valve 1408, the first oil inlet valve 1101, the sixth oil inlet valve 1202, the first oil outlet valve 105, and the fourth oil outlet valve 108 are opened, and the remaining valves are closed. The lubricating oil in the first oil tank 131 is filtered by the first lubricating oil pump 141 through the first coarse filter 171, the first semi-fine filter 174, the first magnetic filter 181, and the first polymer filter 183, and then cooled by the first plate cooler 151 before being pumped to the first test bench 11. During the cooling process, the first temperature control valve 1511 detects and controls the temperature of the lubricating oil in real time. Similarly, the lubricating oil in the second oil tank 132 is filtered by the second lubricating oil pump 142 through the second coarse filter 172, the second semi-fine filter 175, the second magnetic filter 182, and the second polymer filter 184, and then cooled by the second plate cooler 152 before being pumped to the second test bench 12. During the cooling process, the second temperature control valve 1521 detects and controls the temperature of the lubricating oil in real time.

[0068] Finally, the lubricating oil from the first diesel engine on the first test bench 11 returns to the first oil tank 131, and the lubricating oil from the second diesel engine on the second test bench 12 returns to the second oil tank 132. When the test engines on the first test bench 11 and the second test bench are both WinGD patented models, valves eleven (1601), twelve (1602), thirteen (1603), fourteen (1604), the third inlet valve (1103), and the eighth inlet valve (1204) need to be opened accordingly, and the first crosshead lubricating oil pump 161 and the second crosshead lubricating oil pump 162 need to be started to supply lubricating oil to the two test benches.

[0069] like Figure 3 As shown, when the first test bench 11 and the second test bench 12 are simultaneously conducting oil injection tests, the second control valve 102, the third control valve 103, the third valve 1403, the fifth valve 1405, the sixth valve 1406, the eighth valve 1408, the first oil inlet valve 1101, the sixth oil inlet valve 1202, the first oil outlet valve 105, and the fourth oil outlet valve 108 are opened, while the remaining valves are closed. The lubricating oil in the first oil tank 131 is heated to 60-65℃ by the first magnetic induction heater 1313, filtered by the first lubricating oil pump 141 through the first coarse filter 171, the first semi-fine filter 174, the first magnetic filter 181, and the first polymer filter 183, and pumped to the first test bench 11 through the first plate cooler 151 (which does not supply circulating cooling water to the plate cooler). The first temperature control valve 1511 detects and controls the temperature of the lubricating oil in real time. The lubricating oil in the second oil tank 132 is heated to 60-65℃ by the second magnetic induction heater 1323, and then filtered by the second lubricating oil pump 142 through the second coarse filter 172, the second semi-fine filter 175, the second magnetic filter 182, and the second polymer filter 184. It is then pumped to the second test bench 12 by the second plate cooler 152 (which does not supply circulating cooling water to the plate cooler). The second temperature control valve 1521 monitors and controls the temperature of the lubricating oil in real time. Finally, the lubricating oil from the first diesel engine on the first test bench 11 returns to the first oil tank 131, and the lubricating oil from the second diesel engine on the second test bench 12 returns to the second oil tank 132.

[0070] like Figure 4As shown, while the first test bench 11 is undergoing bench testing, the second test bench 12 is undergoing oil injection testing. The second control valve 102, the third control valve 103, valve three 1403, valve five 1405, valve six 1406, valve eight 1408, the first oil inlet valve 1101, the sixth oil inlet valve 1202, the first oil outlet valve 105, and the fourth oil outlet valve 108 are opened, while the remaining valves are closed. The lubricating oil in the first oil tank 131 is filtered by the first lubricating oil pump 141 through the first coarse filter 171, the first semi-fine filter 174, the first magnetic filter 181, and the first polymer filter 183, and then cooled by the first plate cooler 151 before being pumped to the first test bench 11. During the cooling process, the first temperature control valve 1511 monitors and controls the temperature of the lubricating oil in real time. The lubricating oil in the second oil tank 132 is heated to 60-65℃ by the second magnetic induction heater 1323, and then filtered by the second lubricating oil pump 142 through the second coarse filter 172, the second semi-fine filter 175, the second magnetic filter 182, and the second polymer filter 184. It is then pumped to the second test bench 12 by the second plate cooler 152 (which does not supply circulating cooling water to the plate cooler). The second temperature control valve 1521 monitors and controls the temperature of the lubricating oil in real time. Finally, the lubricating oil from the first diesel engine on the first test bench 11 returns to the first oil tank 131, and the lubricating oil from the second diesel engine on the second test bench 12 returns to the second oil tank 132.

[0071] When the test host on the first test bench 11 is a WinGD patented model, valve 11 1601, valve 12 1602, and the third oil inlet valve 1103 should be opened accordingly, and the first crosshead lubricating oil pump 161 should be turned on to supply lubricating oil to the first test bench 11.

[0072] like Figure 5As shown, while the first test bench 11 is conducting an oil injection test, the second test bench 12 is conducting a bench test. The second control valve 102, the third control valve 103, valve three 1403, valve five 1405, valve six 1406, valve eight 1408, the first oil inlet valve 1101, the sixth oil inlet valve 1202, the first oil outlet valve 105, and the fourth oil outlet valve 108 are opened, while the remaining valves are closed. The lubricating oil in the first oil tank 131 is heated to 60-65℃ by the first magnetic induction heater 1313, filtered by the first lubricating oil pump 141 through the first coarse filter 171, the first semi-fine filter 174, the first magnetic filter 181, and the first polymer filter 183, and then pumped to the first test bench 11 through the first plate cooler 151 (which does not supply circulating cooling water to the plate cooler). The first temperature control valve 1511 monitors and controls the temperature of the lubricating oil in real time. The lubricating oil in the second oil tank 132 is filtered by the second lubricating oil pump 142 through the second coarse filter 172, the second semi-fine filter 175, the second magnetic filter 182, and the second polymer filter 184. After being cooled by the second plate cooler 152, the lubricating oil is pumped to the second test bench 12. During the cooling process, the second temperature control valve 1521 monitors and controls the temperature of the lubricating oil in real time. When the test host on the second test bench 12 is a WinGD patented model, valves thirteen 1603, fourteen 1604, and the eighth oil inlet valve 1204 need to be opened accordingly, and the second crosshead lubricating oil pump 162 needs to be turned on to supply lubricating oil to the second test bench 12.

[0073] Through the above equipment and operation process, the lubricating oil circulation of the two stations can be made independent of each other. The supply and return of oil can be switched between the first oil tank 131 and the second oil tank 132, and the three lubricating oil pumps can be used in two ways and standby in one.

[0074] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A diesel engine test lubricating oil system characterized by, It includes a first test bench, a second test bench, and an oil pipeline. The first test bench is used to place a first diesel engine, and the second test bench is used to place a second diesel engine. The oil pipeline is equipped with a first oil tank, a second oil tank, a first lubricating oil pump, a second lubricating oil pump, a first plate cooler, a second plate cooler, a first crosshead lubricating oil pump, and a second crosshead lubricating oil pump. The first test bench has a first oil inlet, a second oil inlet, a first oil outlet, and a second oil outlet; the second test bench has a first oil inlet, a second oil inlet, a first oil outlet, and a second oil outlet; the first oil outlet of the first test bench and the first oil outlet of the second test bench are respectively connected to the inlet of the first oil tank; the second oil outlet of the first test bench and the second oil outlet of the second test bench are respectively connected to the inlet of the second oil tank; the first outlet of the first oil tank and the first outlet of the second oil tank are respectively connected to the inlet of the first lubricating oil pump; the second outlet of the first oil tank and the second outlet of the second oil tank are respectively connected to the inlet of the second lubricating oil pump; the outlet of the first lubricating oil pump is connected to the inlet of the first plate cooler; the outlet of the first plate cooler is connected to the first oil inlet of the first test bench and the first oil inlet of the second test bench; the outlet of the second lubricating oil pump is connected to the inlet of the second plate cooler; the outlet of the second plate cooler is connected to the second oil inlet of the first test bench and the second oil inlet of the second test bench. The inlet of the first crosshead lubricating oil pump is connected to the outlet of the first plate cooler, and the outlet of the first crosshead lubricating oil pump is connected to the first oil inlet of the first test bench and the first oil inlet of the second test bench; the inlet of the second crosshead lubricating oil pump is connected to the outlet of the second plate cooler, and the outlet of the second crosshead lubricating oil pump is connected to the second oil inlet of the first test bench and the second oil inlet of the second test bench.

2. The diesel engine test lubricating oil system of claim 1, wherein, The first outlet of the first oil tank is equipped with a first control valve, and the second outlet of the first oil tank is equipped with a second control valve; the first outlet of the second oil tank is equipped with a third control valve, and the second outlet of the second oil tank is equipped with a fourth control valve.

3. The diesel engine test lubricating oil system of claim 2 wherein, The first oil outlet of the first test bench is equipped with a first oil outlet valve, the second oil outlet of the first test bench is equipped with a second oil outlet valve, the first oil outlet of the second test bench is equipped with a third oil outlet valve, and the second oil outlet of the second test bench is equipped with a fourth oil outlet valve.

4. The diesel engine test lubricating oil system of claim 1 wherein, A third lubricating oil pump is also installed on the oil pipeline; The first outlet of the first oil tank, the first outlet of the second oil tank, the second outlet of the first oil tank, and the second outlet of the second oil tank are all connected to the inlet of the third lubricating oil pump, and the outlet of the third lubricating oil pump is connected to the inlet of the first plate cooler and the inlet of the second plate cooler.

5. The diesel engine test lubricating oil system of claim 4 wherein, The oil pipeline is also equipped with a first coarse filter, a second coarse filter and a third coarse filter; The first coarse filter is located at the inlet of the first lubricating oil pump, the second coarse filter is located at the inlet of the second lubricating oil pump, and the third coarse filter is located at the inlet of the third lubricating oil pump.

6. A diesel engine test lubricating oil system according to claim 4 or 5, characterised in that, The oil pipeline is also equipped with a first semi-fine filter, a second semi-fine filter, and a third semi-fine filter. The first semi-fine filter is located at the outlet of the first lubricating oil pump, the second semi-fine filter is located at the outlet of the second lubricating oil pump, and the third semi-fine filter is located at the outlet of the third lubricating oil pump.

7. The diesel engine test lubricating oil system of claim 6 wherein, The oil pipeline is also equipped with a first magnetic filter and a second magnetic filter; The first magnetic filter is located between the outlet of the first semi-fine filter and the inlet of the first plate cooler, and the second magnetic filter is located between the outlet of the second semi-fine filter and the inlet of the second plate cooler.

8. The diesel engine test lubricating oil system of claim 7 wherein, The oil pipeline is also equipped with a first polymer filter and a second polymer filter. The first polymer filter is located between the outlet of the first plate cooler and the inlet of the first crosshead lubricating pump, and the second polymer filter is located between the outlet of the second plate cooler and the inlet of the second crosshead lubricating pump.

9. The diesel engine test lubricating oil system of claim 1 wherein, The first oil tank is equipped with a first magnetic induction heater, and the second oil tank is equipped with a second magnetic induction heater.

10. The diesel engine test lubricating oil system of claim 5 wherein, The outlet of the first plate cooler is equipped with a first temperature control valve, and the outlet of the second plate cooler is equipped with a second temperature control valve.

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