CN112524015A - Durability testing mechanism and method for oil pump in gas-containing oil liquid - Google Patents

Durability testing mechanism and method for oil pump in gas-containing oil liquid Download PDF

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Publication number
CN112524015A
CN112524015A CN202011345020.4A CN202011345020A CN112524015A CN 112524015 A CN112524015 A CN 112524015A CN 202011345020 A CN202011345020 A CN 202011345020A CN 112524015 A CN112524015 A CN 112524015A
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China
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oil
oil tank
pump
tank
small
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CN202011345020.4A
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Chinese (zh)
Inventor
戚亚克
郑红江
罗力元
连礼福
方靖宇
励轲
吴国隆
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Ningbo Shenglong Intelligent Automobile System Co ltd
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Ningbo Shenglong Intelligent Automobile System Co ltd
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Priority to CN202011345020.4A priority Critical patent/CN112524015A/en
Publication of CN112524015A publication Critical patent/CN112524015A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00Testing machines, pumps, or pumping installations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

The invention discloses a durability test mechanism of an oil pump in gas-containing oil and a test method thereof, wherein the test mechanism comprises: a controller; a rack main oil tank; the small forward rotation oil tank is connected with the rack main oil tank; the small reverse rotation oil tank and the oil in the small forward rotation oil tank realize oil exchange through forward and reverse rotation of the driving motor; the oil branch is formed by extracting oil in the main rack oil tank and injecting the oil into the small forward rotation oil tank; the gas supplementing branch is connected with the oil branch and used for ventilating the oil branch; the gearbox oil pump to be detected is connected with the driving motor, one end of the gearbox oil pump to be detected is connected with the small forward rotation oil tank, and the other end of the gearbox oil pump to be detected is connected with the small reverse rotation oil tank. By adopting the testing mechanism and the corresponding testing method, the reliability and durability verification of the transmission oil pump during the reverse work of the vehicle can be better simulated, and the safe and stable operation of the vehicle is ensured.

Description

Durability testing mechanism and method for oil pump in gas-containing oil liquid
Technical Field
The invention relates to the technical field of pump performance detection, in particular to a durability testing mechanism and a durability testing method for an oil pump in gas-containing oil.
Background
In recent years, the global automobile holding capacity is rapidly increased, the energy and environmental problems caused by the rapid increase are valued by various countries, and the governments of various countries successively issue laws and measures for limiting automobile emission and encouraging development of new energy automobiles. Due to the advantages of pure electric vehicles and the easiness in meeting the emission requirements, many automobile manufacturers research and develop the pure electric vehicles as an important development content. The pure electric automobile has no engine, the speed can be changed only by the transmission and control mechanism such as the transmission gear and the like in the running process, the speed changer is composed of the gear transmission mechanism or the operation mechanism, the transmission oil pump provides lubrication for the meshing of all the mechanisms and generates heat for cooling through friction, and the pure electric automobile is an important functional part in the speed changer.
However, the oil pump has a problem that efficiency is lowered after a long time operation. Because the oil pump is always in a working state in the driving process of the automobile, certain air exists in the gearbox, the oil pump works in the oil containing the air for a long time, the oil pump is easy to generate a gas corrosion phenomenon, the efficiency of the oil pump is reduced, the oil pump cannot be fully supplied in subsequent work or the oil pump is directly damaged, the oil supply function is lost, and the normal driving of the automobile on a road is influenced.
Therefore, in order to ensure that the gearbox obtains better performance, the oil pump generally needs to be subjected to a bench test for performance detection before delivery so as to ensure that the delivered product is qualified. How to design a test bench with simple operation and a working environment for truly simulating an oil pump is a problem which needs to be solved urgently at present.
Disclosure of Invention
Aiming at the problems in the prior art, the durability test mechanism and the test method of the oil pump in the gas-containing oil liquid are professional, reliable and convenient to operate, reliability and durability verification of the oil pump of the transmission when a vehicle works in the reverse direction can be better simulated, and safe and stable running of the vehicle is ensured.
The specific technical scheme is as follows:
firstly, a durability testing mechanism of an oil pump in gas-containing oil is provided, which comprises: the controller is a master control end of the testing mechanism; the rack main oil tank simulates the temperature of working oil of the automobile gearbox and realizes temperature control; the small forward rotation oil tank is connected with the rack main oil tank; the small reverse rotation oil tank and the oil in the small forward rotation oil tank realize oil exchange through forward and reverse rotation of the driving motor; the oil branch is formed by extracting oil in the main rack oil tank and injecting the oil into the small forward rotation oil tank; the gas supplementing branch is connected with the oil branch and used for ventilating the oil branch; the gearbox oil pump to be detected is connected with the driving motor, one end of the gearbox oil pump to be detected is connected with the small forward rotation oil tank, and the other end of the gearbox oil pump to be detected is connected with the small reverse rotation oil tank.
Preferably, the oil branch comprises an auxiliary oil pump, one end of the auxiliary oil pump is connected with the small forward rotation oil tank, and the other end of the auxiliary oil pump is connected with the main rack oil tank.
Preferably, a liquid pressure sensor, a liquid pressure regulating valve and a liquid flowmeter are arranged on an oil branch between the auxiliary oil pump and the small forward rotation oil tank.
Preferably, the air supply branch is supplied with air by an external air pump, and the air outlet end of the air supply branch is connected to an oil branch between the auxiliary oil well pump and the main oil tank of the rack.
Preferably, the gas supply branch comprises a gas pressure sensor, a gas pressure regulating valve and a gas flowmeter.
Preferably, the air outlet end of the air supply branch is provided with a one-way valve.
Preferably, an oil pump pressure sensor and an oil pump pressure regulating valve are connected between the forward small oil tank and the reverse small oil tank.
Preferably, the main oil tank of the rack realizes temperature control through a mold temperature controller.
Secondly, a method for testing the durability of the oil pump in the gas-containing oil liquid is provided, which comprises the following steps:
1) the temperature of the main oil tank of the rack is controlled by controlling the mold temperature controller through the controller, and oil in the main oil tank of the rack is heated to a target temperature;
2) opening the auxiliary oil pump, pumping oil in the main oil tank of the rack into the small forward rotation oil tank, and overflowing and falling back into the main oil tank of the rack after the small forward rotation oil tank is filled with the oil;
3) the opening degree of the oil pressure regulating valve is regulated to realize the required target flow for the auxiliary oil well pump to pump out;
4) controlling a driving motor to provide a driving power source for a gearbox oil pump to be detected, and adjusting the opening of an oil pump pressure adjusting valve after the gearbox oil pump operates to a target rotating speed so that the pumping pressure of the gearbox oil pump reaches the lubricating oil pressure and flow resistance information meeting the requirements;
5) opening a gas pressure regulating valve, providing a certain gas quantity for an oil liquid branch, and adjusting the opening of the gas pressure regulating valve to realize that the flow reaches a target value after oil and gas mixing of a liquid flowmeter;
6) the target rotating speed and the operation period of the driving motor are set through the controller, when the driving motor is set to operate in the positive direction for a certain time, the gearbox oil pump pumps oil in the small forward rotating oil tank into the small reverse rotating oil tank to be filled, the driving motor is controlled to rotate in the reverse direction for a certain time, then the oil in the small reverse rotating oil tank is just sucked to be empty, and the driving motor is periodically circulated to operate in the positive and reverse rotation.
Preferably, in step 5, a special gas concentration detector is used for monitoring the concentration percentage of gas in the oil-gas mixture pumped out after the liquid pressure regulating valve is pumped out, so that the detection of the content of the oil-gas mixture is realized.
The positive effects of the technical scheme are as follows:
1) according to the invention, the external air pump is used for aerating oil, so that the oil contains a certain proportion of gas, the oil pump of the gearbox to be tested is contacted with the gas-containing oil when in work, the working condition of the oil pump is truly simulated, a more real test result is obtained, a problem solving direction is provided for research and development, and the delivery quality of the oil pump of the gearbox is finally ensured;
2) in the invention, an auxiliary oil pump works to pump oil in a main oil tank of a rack into one way, namely an oil branch; the other branch, namely the air supply branch, directly charges air into the oil branch, and controls the air inlet speed through the air pressure regulating valve so as to control the air content in the oil;
3) according to the invention, the flow and the pressure of the gas-containing oil are controlled by adjusting the liquid pressure adjusting valve, so that the gas-containing oil enters the small corotation oil tank with the temperature sensor at a certain speed;
4) the detection of the content of the oil-gas mixture is realized by monitoring the concentration percentage of the gas in the oil-gas mixture pumped out after the liquid pressure regulating valve is monitored by a special gas concentration detector.
Drawings
Fig. 1 is a schematic connection structure diagram of a durability testing mechanism of an oil pump in gas-containing oil according to the invention.
In the attached drawings, 1, a rack main oil tank; 2. a small oil tank is positively rotated; 3. a reverse small oil tank; 4. a drive motor; 5. a transmission oil pump; 6. an auxiliary oil pump; 7. a liquid pressure sensor; 8. a liquid pressure regulating valve; 9. a liquid flow meter; 10. a gas pressure sensor; 11. a gas pressure regulating valve; 12. a gas flow meter; 13. a one-way valve; 14. an oil pump pressure sensor; 15. an oil pump pressure regulating valve; 16. and (4) collecting a filter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the durability testing mechanism of an oil pump in gas-containing oil is shown, and comprises a controller, a rack main oil tank 1, a small forward rotation oil tank 2, a small reverse rotation oil tank 3, an oil branch and an air supply branch. The controller is a master control end of the testing mechanism and controls normal automatic testing of the testing mechanism. The main oil tank 1 of the rack simulates the temperature of working oil of an automobile gearbox and realizes temperature control. The small forward rotation oil tank 2 is connected with the rack main oil tank 1; the oil in the small reverse rotation oil tank 3 and the small forward rotation oil tank 2 is exchanged with the oil in the small reverse rotation oil tank 3 through the forward and reverse rotation of the driving motor 4. Specifically, the gearbox oil pump 5 to be detected is connected with the driving motor 4, one end of the gearbox oil pump 5 to be detected is connected with the small forward rotation oil tank 2, and the other end of the gearbox oil pump 5 to be detected is connected with the small reverse rotation oil tank 3, so that when the driving motor 4 drives the gearbox oil pump 5 to be detected to work, the forward and reverse rotation of the driving motor 4 can realize oil exchange between the small forward rotation oil tank 2 and the small reverse rotation oil tank 3. The oil branch is formed by injecting oil in the main oil tank 1 of the extraction rack into the small forward rotation oil tank 2; the air supplement branch is connected with the oil branch and ventilates to the oil branch to simulate real oil pump working environment, contain the air in the long-time work back fluid, improve the reliability of 5 capability test of gearbox oil pump.
Specifically, the invention provides a durability test mechanism of an oil pump in gas-containing oil, wherein a rack main oil tank 1 is arranged in a test rack, the rack main oil tank 1 is connected with a mold temperature controller, the temperature of the rack main oil tank 1 is controlled through a master control end, namely a controller, and the real working oil temperature of an automobile gearbox is simulated. Be equipped with a corotation small oil tank 2 in the top of rack main oil tank 1, realize the exchange of fluid through the fluid branch road between corotation small oil tank 2 and the rack main oil tank 1, in order to simulate real fluid operational environment, added the tonifying qi branch road in the fluid branch road, the air pump lets in the air to the fluid branch road through the tonifying qi branch road for contain the air in the fluid that gets into in the corotation small oil tank 2. The gearbox oil pump 5 to be detected is connected with the small forward rotation oil tank 2, the gearbox oil pump 5 to be detected is also connected with the driving motor 4, and the forward rotation and the reverse rotation of the driving motor 4 drive the gearbox oil pump to work, so that the other end of the gearbox oil pump 5 is connected with the small forward rotation oil tank. The oil exchange between the small forward rotation oil tank 2 and the small reverse rotation oil tank 3 is realized through the forward and reverse rotation of the driving motor 4.
More specifically, the fluid branch road includes supplementary oil-well pump 6, and the one end and the corotation little oil tank 2 of supplementary oil-well pump 6 are connected, and the other end and the rack main oil tank 1 of supplementary oil-well pump 6 are connected, through supplementary oil-well pump 6, with the fluid pump in the rack main oil tank 1 in the corotation little oil tank 2. In order to better monitor the oil pressure and the oil flow in the oil branch, a liquid pressure sensor 7, a liquid pressure regulating valve 8 and a liquid flowmeter 9 are arranged on the oil branch between the auxiliary oil pump 6 and the small corotation oil tank 2, and the oil pressure and the flow of the oil branch can be regulated by regulating the liquid pressure valve so as to meet the requirements.
The tonifying qi branch road is by external air pump air feed, and the end of giving vent to anger of tonifying qi branch road is connected on the fluid branch road between supplementary oil-well pump 6 and rack main oil tank 1, and the tonifying qi branch road includes gas pressure sensor 10, gas pressure governing valve 11 and gas flowmeter 12, realizes the gas pressure regulation and the gas flow regulation of tonifying qi branch road through the aperture of adjusting gas pressure governing valve 11. In order to enable the air supply branch to supply air to the oil branch better and prevent gas backflow, a check valve 13 is arranged at the air outlet end of the air supply branch, and meanwhile, oil is prevented from entering the air supply branch.
An oil pump pressure sensor 14 and an oil pump pressure regulating valve 15 are connected between the small forward rotation oil tank 2 and the small reverse rotation oil tank 3, and the oil pump pressure between the small forward rotation oil tank 2 and the small reverse rotation oil tank 3 when the drive motor 4 rotates forward and reverse is realized by regulating the oil pump pressure regulating valve 15.
The invention also provides a method for testing the durability of the oil pump in the gas-containing oil, which comprises the following steps:
1) the temperature of the main oil tank 1 of the rack is controlled by controlling a mold temperature controller through a controller, and oil in the main oil tank 1 of the rack is heated to a target temperature;
2) the auxiliary oil well pump 6 is opened, oil heated to the target temperature in the main oil tank 1 of the rack is pumped into the small forward rotation oil tank 2 (a temperature sensor is arranged in the small forward rotation oil tank 2), and when the small forward rotation oil tank 2 is filled with the oil, the oil overflows and falls back into the main oil tank 1 of the rack, so that the temperature balance of the oil in the main oil tank 1 of the rack and the small forward rotation oil tank 2 can be realized;
3) the opening degree of the oil pressure regulating valve is regulated to realize the required target flow for pumping out the auxiliary oil well pump 6;
4) controlling the driving motor 4 to provide a driving power source for the gearbox oil pump 5 to be detected, and adjusting the opening of the oil pump pressure adjusting valve 15 after the gearbox oil pump 5 operates to a target rotating speed so that the pumping pressure of the gearbox oil pump 5 reaches the lubricating oil pressure and flow resistance information meeting the requirement;
5) opening the gas pressure regulating valve 11, providing a certain gas flow for the oil liquid branch, and adjusting the opening of the gas pressure regulating valve 11 to realize that the flow of the mixed oil and gas of the liquid flowmeter 9 reaches a target value; or a special gas concentration detector can be used for monitoring the gas concentration percentage in the oil-gas mixture pumped out after the liquid pressure regulating valve 8 is pumped out to realize the detection of the oil-gas mixture content;
6) the target rotating speed and the running period of the driving motor 4 are set through the controller, when the driving motor 4 runs in the positive direction for a certain time, the gearbox oil pump 5 pumps oil in the small forward rotating oil tank 2 into the small reverse rotating oil tank 3 to fill the small reverse rotating oil tank, the driving motor 4 is controlled to rotate in the reverse direction for a certain time, and the oil in the small reverse rotating oil tank 3 is just sucked to be empty, so that the strainer 16 is exposed in the air, and the driving motor runs in the positive and reverse rotating mode periodically and circularly.
Also, during this test, care needs to be taken to replenish the oil in the main tank 1 of the gantry to ensure proper testing.
In summary, the test method includes an oil path and an air path, and the direction of the oil path is as follows: pumping oil in the main oil tank 1 of the rack into the small forward rotation oil tank 2 through the auxiliary oil pump 6; gas path direction: the degree of oil-gas mixing is controlled by the gas pressure regulating valve 11, and gas backflow and oil liquid entering the gas circuit are prevented by the check valve 13. The testing method effectively verifies the long-time working condition of the oil pump in the working environment of the gas-containing oil liquid, and provides a direction for solving problems for research and development.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides an oil pump durability test mechanism in gassy fluid which characterized in that includes:
the controller is a master control end of the testing mechanism;
the system comprises a rack main oil tank (1), wherein the rack main oil tank (1) simulates the temperature of working oil of an automobile gearbox and realizes temperature control;
the small forward rotation oil tank (2), the small forward rotation oil tank (2) is connected with the main rack oil tank (1);
the small counter-rotating oil tank (3), the oil in the small counter-rotating oil tank (3) and the oil in the small counter-rotating oil tank (2) are positively and negatively rotated through the driving motor (4) to realize oil exchange;
the oil branch is formed by extracting oil in the rack main oil tank (1) and injecting the oil into the small forward rotation oil tank (2);
the gas supplementing branch is connected with the oil branch and used for ventilating the oil branch;
the gearbox oil pump (5) to be detected is connected with the driving motor (4), one end of the gearbox oil pump (5) to be detected is connected with the small forward rotation oil tank (2), and the other end of the gearbox oil pump to be detected is connected with the small reverse rotation oil tank (3).
2. The mechanism for testing the durability of an oil pump in a gassy oil according to claim 1, wherein: the oil branch comprises an auxiliary oil well pump (6), one end of the auxiliary oil well pump (6) is connected with the small forward rotation oil tank (2), and the other end of the auxiliary oil well pump (6) is connected with the main rack oil tank (1).
3. The mechanism for testing the durability of an oil pump in a gassy oil according to claim 2, wherein: and a liquid pressure sensor (7), a liquid pressure regulating valve (8) and a liquid flowmeter (9) are arranged on an oil branch between the auxiliary oil pump (6) and the small corotation oil tank (2).
4. The mechanism for testing the durability of an oil pump in a gassy oil according to claim 3, wherein: the air supply branch is supplied with air by an external air pump, and the air outlet end of the air supply branch is connected to an oil branch between the auxiliary oil well pump (6) and the main oil tank (1) of the rack.
5. The mechanism for testing the durability of an oil pump in a gassy oil according to claim 4, wherein: the air supply branch comprises a gas pressure sensor (10), a gas pressure regulating valve (11) and a gas flowmeter (12).
6. The mechanism for testing the durability of an oil pump in a gassy oil according to claim 5, wherein: and the air outlet end of the air supply branch is provided with a one-way valve (13).
7. The mechanism for testing the durability of an oil pump in a gassy oil according to claim 6, wherein: an oil pump pressure sensor (14) and an oil pump pressure regulating valve (15) are connected between the forward small oil tank (2) and the reverse small oil tank (3).
8. The mechanism for testing the durability of an oil pump in a gassy oil according to claim 7, wherein: the main oil tank (1) of the rack realizes temperature control through a mold temperature controller.
9. A method for testing a durability test mechanism of an oil pump in a gassy oil according to claim 8, comprising the steps of:
1) the temperature of the main oil tank (1) of the rack is controlled by controlling a mold temperature controller through a controller, and oil in the main oil tank (1) of the rack is heated to a target temperature;
2) opening the auxiliary oil well pump (6), pumping oil in the main oil tank (1) of the rack into the small forward rotation oil tank (2), and overflowing and falling back into the main oil tank (1) of the rack after the small forward rotation oil tank (2) is filled with full oil;
3) the opening of the oil pressure regulating valve is regulated to realize the required target flow for pumping out the auxiliary oil pump (6);
4) controlling a driving motor (4) to provide a driving power source for a gearbox oil pump (5) to be detected, and adjusting the opening of an oil pump pressure adjusting valve (15) after the gearbox oil pump (5) operates to a target rotating speed so that the pumping pressure of the gearbox oil pump (5) reaches the lubricating oil pressure and flow resistance information meeting the requirements;
5) opening a gas pressure regulating valve (11), providing a certain gas flow for an oil liquid branch, and adjusting the opening of the gas pressure regulating valve (11) to realize that the flow of the mixed oil gas of the liquid flowmeter (9) reaches a target value;
6) the target rotating speed and the operation period of the driving motor (4) are set through the controller, when the driving motor (4) is set to operate in the positive direction for a certain time, the gearbox oil pump (5) pumps oil in the small forward rotating oil tank (2) into the small reverse rotating oil tank (3) to fill the small forward rotating oil tank, the driving motor (4) is controlled to rotate in the reverse direction for a certain time, the oil in the small reverse rotating oil tank (3) is just sucked to be empty, and the driving motor (4) operates in the positive and reverse rotating mode in a periodic cycle mode.
10. A method for testing the durability of an oil pump according to claim 9 in a gassy oil, characterized in that: in the step 5, a special gas concentration detector is used for monitoring the gas concentration percentage in the oil-gas mixture pumped out after the liquid pressure regulating valve (8) is pumped out, so that the detection of the oil-gas mixture content is realized.
CN202011345020.4A 2020-11-26 2020-11-26 Durability testing mechanism and method for oil pump in gas-containing oil liquid Pending CN112524015A (en)

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Publication number Priority date Publication date Assignee Title
CN114837931A (en) * 2022-06-09 2022-08-02 湖南高创翔宇科技有限公司 Fuel pump test system and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114837931A (en) * 2022-06-09 2022-08-02 湖南高创翔宇科技有限公司 Fuel pump test system and method
CN114837931B (en) * 2022-06-09 2024-03-22 湖南高创翔宇科技有限公司 Fuel pump testing system and method

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