CN212672043U

CN212672043U - Multifunctional testing and calibrating equipment for oil pump

Info

Publication number: CN212672043U
Application number: CN202020538496.9U
Authority: CN
Inventors: 罗力元; 刘园园; 高坤; 徐晓锋; 曹思源; 连礼福; 方靖宇; 周培良; 罗玉龙
Original assignee: Ningbo Shenglong Automotive Powertrain System Co Ltd
Current assignee: Ningbo Shenglong Automotive Powertrain System Co Ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2021-03-09
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a multi-functional test calibration equipment of oil pump, it includes the oil tank, the pump body that awaits measuring, actuating mechanism, first detection oil circuit and second detection oil circuit, and the pump body that awaits measuring is connected with oil tank and actuating mechanism for actuating mechanism drive pump body that awaits measuring inhales oil from the oil tank in, first detection oil circuit and second detection oil circuit all form the return circuit between oil tank and the oil tank, and first detection oil circuit and second detection oil circuit all with the pump body coupling that awaits measuring and through the pump body that awaits measuring. The utility model relates to a can simulate the true operation oil condition of oil pump, and then detect the test equipment of oil pump performance.

Description

Multifunctional testing and calibrating equipment for oil pump

Technical Field

The utility model relates to a check out test set technical field of pump specifically is a multi-functional test calibration equipment of oil pump.

Background

At present, the oil pump on the market is used for forcibly pressing engine oil to the moving surfaces of various parts of an engine and a gearbox after the engine oil is increased to a certain pressure. The oil pump structure can be divided into a gear type and a rotor type, the produced oil pump needs to be installed on various engines or large-scale devices, if the oil pump is unqualified, serious consequences such as abnormal engine operation and the like can be caused, the above situations are not avoided, and the oil pump has related tests for simulating the industrial control of the engine before leaving a factory. With the increase of the national requirements on energy conservation and emission reduction, the pure lubricating and cooling oil pump on the market can not meet the existing requirements, and various automobile manufacturers also provide corresponding requirements on the power consumption of the engine according to actual conditions, so that the oil pump is not limited to lubrication and cooling. More host plants prefer to reduce power consumption as much as possible without affecting lubrication and cooling effects, and each oil pump manufacturer will subsequently deliver a variable displacement oil pump and a transmission oil pump that meet the actual conditions, requiring the oil pumps to provide different lubrication and flow rates depending on the energy consumption of the engine and transmission. Compared with an intelligently-adjusted variable-row oil pump and a gearbox oil pump, the device for detecting, testing and calibrating the corresponding oil pump after production is particularly important, can effectively simulate various motion working conditions of an engine and a gearbox, and can improve the product quality and the customer satisfaction degree by testing and calibrating more truly and detecting the performance of the oil pump.

Although many oil pump detection test devices are available on the market, target devices are not yet available for a while on how to truly simulate various working conditions of an engine, so that the validity and the authenticity of performance detection data of variable-displacement oil pumps and transmission oil pumps are greatly reduced. The device can carry out more effective and real simulation on all working conditions of the engine and the gearbox.

The conventional oil pump performance detection and verification can be carried out on the conventional oil pump test equipment, no definite method standard exists on the test working condition of a target engine and a gearbox, and similar target equipment is not available.

Disclosure of Invention

Aiming at the problems in the prior art, the testing equipment can simulate the real operating oil condition of the oil pump and further detect the performance of the oil pump.

The specific technical scheme is as follows:

the utility model provides a multi-functional test calibration equipment of oil pump, it includes the oil tank, the pump body that awaits measuring, actuating mechanism, first detection oil circuit and second detection oil circuit, the pump body that awaits measuring is connected with oil tank and actuating mechanism for actuating mechanism drive pump body that awaits measuring inhales oil from the oil tank, all forms the return circuit between first detection oil circuit and the second detection oil circuit and the oil tank, and first detection oil circuit and second detection oil circuit all with the pump body that awaits measuring is connected and pass through the pump body that awaits measuring.

The first detection oil way is further optimized to comprise a main oil way, a lubrication oil way, a first pressure sensor, a second pressure sensor, a first valve bank, a second valve bank, a first flow resistor, a second flow resistor and a flow meter, wherein the main oil way is connected to the oil tank and sequentially connected with a pump body to be detected, the first pressure sensor, the first valve bank, the first flow resistor, the second valve bank and the flow meter, and finally returns to the oil tank to form a main oil way loop; and the starting point of the lubricating oil path is positioned between the first flow resistor and the second flow resistor, is sequentially connected with the second pressure sensor and the pump body to be tested, and finally returns to the oil tank to form a lubricating oil path loop.

The second detection oil path comprises an oil delivery path, a lubrication branch, a first proportional valve, a second proportional valve and a flowmeter, wherein the oil delivery path is connected to the first pressure sensor, sequentially connected with the first valve bank, the first proportional valve, the second proportional valve and the flowmeter, and finally returned to the oil tank to form an oil delivery path loop; and the starting point of the lubricating branch is positioned between the first valve group and the first proportional valve, sequentially connected with the second pressure sensor and the pump body to be tested, and finally returned to the oil tank to form a lubricating branch loop.

Further optimize, actuating mechanism includes support, inverter motor, torque sensor and shaft coupling, and inverter motor is fixed in on the support, and inverter motor output shaft is connected with torque sensor, and inverter motor output shaft passes through the shaft coupling and is connected to the pump body main shaft that awaits measuring.

Further optimized, the main oil way, the lubricating oil way, the oil delivery way and the lubricating branch are all pipelines.

The first flow resistor and the second flow resistor comprise a base and a sealing cover, the base is provided with a first through hole penetrating through the base, the base is further provided with a second through hole which is perpendicular to and communicated with the first through hole, the opening of the second through hole faces upwards, the intersection of the first through hole and the second through hole is a limiting bulge, when the pipelines are sleeved at two ends of the first through hole and matched with the first through hole, the end faces of the two pipelines just abut against the outer side face of the limiting bulge, a flow resistance block is detachably sleeved in the second through hole, two side faces of the flow resistance block abut against the inner side face of the limiting bulge, the flow resistance block is provided with a third through hole along the axial direction of the first through hole, the third through hole is communicated with the first through hole, the oil quantity of the flow resistance block is controlled by controlling the aperture size of the third through.

Further optimize, the second through-hole is the quad slit.

Further preferably, the bottom surface of the sealing cover extends downwards to form a protrusion, and when the sealing cover is fixedly assembled above the base, the protrusion is just matched in the second through hole and the bottom of the protrusion abuts against the upper surface of the flow resistance block.

Further optimization, the upper surface of the flow resistance block is an arc surface, and a threaded counter bore is formed in the middle of the arc surface.

The positive effects of the technical scheme are as follows:

(1) this equipment is equipped with two and detects the oil circuit: the first detection oil path simulates the speed change states of an engine and a gearbox, namely the working conditions of different oil amounts are simulated during speed change of the engine and the gearbox of the oil pump through different oil amounts of the flow resistance blocks, and the detection oil path is particularly suitable for a variable displacement oil pump; the second detection oil path simulates the no-load state of the oil pump engine and the gearbox, the idling working condition states in the oil pump engine and the gearbox are simulated through the control of the proportional valve and the oil quantity monitoring of the flow meter, and the two detection oil paths can run simultaneously or independently to meet different testing requirements.

(2) The flow resistors with different apertures are arranged on the oil path pipeline, so that the oil quantity of the oil pump to be tested is controllable and adjustable, the oil path working condition of the oil pump is truly reproduced and simulated, and the accurate test of the oil pump is realized.

Drawings

Fig. 1 is an overall structure diagram of the present invention.

Fig. 2 is the schematic diagram of the oil circuit detection of the present invention.

FIG. 3 is a block diagram of the flow resistance of the present invention.

Fig. 4 is a sectional view of the flow block of the present invention.

Wherein, 1, an oil tank; 2. a pump body to be tested; 3. a drive mechanism; 30. a support; 31. a variable frequency motor; 32. a torque sensor; 33. a coupling; 4. a first detection oil passage; 40. a main oil path; 41. a lubrication oil path; 42. a first pressure sensor; 43. a second pressure sensor; 44. a first valve block; 45. a second valve block; 46. a first flow resistor; 47. a second flow resistor; 48. a flow meter; 5. a second detection oil passage; 50. an oil delivery path; 51. a lubrication branch; 52. a first proportional valve; 53. a second proportional valve; 6. A base; 7. a sealing cover; 8. a first through hole; 9. a second through hole; 10. a third through hole; 11. a limiting bulge; 12. a flow block; 13. and (4) protruding.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are combined with the accompanying drawings to specifically explain the operations provided by the present invention.

The utility model discloses a multi-functional test calibration equipment of oil pump, as shown in fig. 1, it includes oil tank 1, the pump body 2 that awaits measuring, actuating mechanism 3, first detection oil circuit 4 and second detect the oil circuit 5, the pump body 2 that awaits measuring is connected with oil tank 1 and actuating mechanism 3, make actuating mechanism 3 drive the pump body 2 that awaits measuring inhale oil from oil tank 1 in, consequently oil tank 1 carries out the fuel feeding to the pump body 2 that awaits measuring, first detection oil circuit 4 and second detect and all form the return circuit between oil circuit 5 and the oil tank 1, and first detection oil circuit 4 and second detect oil circuit 5 all with the pump body 2 that awaits measuring be connected and through the pump body 2 that awaits measuring, the oil that absorbs the pump body 2 that awaits measuring carries out the flow, the detection of data such as pressure, and then judge according.

As shown in fig. 2, the first detection oil path 4 includes a main oil path 40, a lubrication oil path 41, a first pressure sensor 42, a second pressure sensor 43, a first valve group 44, a second valve group 45, a third valve group, a first flow resistor 46, a second flow resistor 47 and a flow meter 48, the main oil path 40 is connected to the oil tank 1 and sequentially connected to the pump body 2 to be detected, the first pressure sensor 42, the first valve group 44, the first flow resistor 46, the second flow resistor 47, the second valve group 45 and the flow meter 48, and finally returns to the oil tank 1 to form a main oil path 40 loop; the starting point of the lubricating oil path 41 is located between the first flow resistor 46 and the second flow resistor 47, and the starting point of the lubricating oil path 41 is sequentially connected with the second pressure sensor 43 and the pump body 2 to be tested, and finally returns to the oil tank 1 to form a loop of the lubricating oil path 41. Its working process does, and the pump body 2 that awaits measuring carries out the oil absorption through actuating mechanism 3, and fluid flows through first pressure sensor 42 along main oil circuit 40, and first pressure sensor 42 gathers pressure data, then first valves 44 is opened, and fluid through first valves 44 passes through first flow resistor 46, and fluid that comes out from first flow resistor 46 divides into two oil circuits: a lubricating oil path 41 serving as an oil pump to be tested successively passes through a second valve group 45 and a second pressure sensor 43, the second pressure sensor 43 collects pressure data of the lubricating oil path 41, and finally oil of the lubricating oil path 41 returns to the oil pump to be tested; the other one continues as main oil path 40, passes through second flow resistor 47 and third valve group, then flows through flow meter 48 for flow measurement, and finally returns to oil tank 1. Therefore, the oil amount flowing through the first flow resistor 46 and the second flow resistor 47 is different due to different apertures, and the oil amount of the oil pump to be tested during speed change is simulated by controlling the size of the aperture of the flow resistor.

The second detection oil path 5 comprises an oil path 50, a lubrication branch 51, a first proportional valve 52, a second proportional valve 53 and a flow meter 48, wherein the oil path 50 is connected to the first pressure sensor 42, sequentially connected with the first valve group 44, the first proportional valve 52, the second proportional valve 53 and the flow meter 48, and finally returned to the oil tank 1 to form an oil path 50 loop; the starting point of the lubricating branch 51 is located between the first valve group 44 and the first proportional valve 52, and the lubricating branch 51 sequentially connects the second pressure sensor 43 and the pump body 2 to be measured, and finally returns to the oil tank 1 to form a loop of the lubricating branch 51. Its working process does, and the pump body 2 that awaits measuring inhales oil through actuating mechanism 3, and fluid flows through first pressure sensor 42 along oil delivery circuit 50, and first pressure sensor 42 gathers pressure data, then first valves 44 is opened, and fluid through first valves 44 falls into two oil circuits: a lubricating branch 51 serving as an oil pump to be tested, wherein oil in the lubricating branch 51 flows through the second pressure sensor 43 and finally returns to the oil pump to be tested; the other one is transported as a fuel delivery line 50, flows through a first proportional valve 52 and a second proportional valve 53 in sequence, then flows through the flow meter 48, performs flow measurement, and finally returns to the fuel tank 1. The first proportional valve 52 and the second proportional valve 53 select different flow rates, i.e. fixed oil amount when the oil pump is idle, according to different types of the oil pump to be measured.

The driving mechanism 3 comprises a support 30, a variable frequency motor 31, a torque sensor 32 and a coupler 33, the variable frequency motor 31 is fixed on the support 30, an output shaft of the variable frequency motor 31 is connected with the torque sensor 32, the torque sensor 32 is used for detecting output torque, and the output shaft of the variable frequency motor 31 is connected to a main shaft of the pump body 2 to be detected through the coupler 33.

It should be noted that the main oil path 40, the lubrication oil path 41, the oil delivery path 50 and the lubrication branch 51 are all pipelines, the type, material, size and routing of the pipelines are not redundant, and in addition, each oil path and branch is connected with the oil tank 1 and is provided with a filter at the oil return position for filtering oil impurities, so as to ensure the oil quality, enable the oil quality to be recycled, and reduce the influence of the oil on the detection data to the maximum extent, thereby ensuring the accuracy and authenticity of the data.

The first flow resistor 46 and the second flow resistor 47 comprise a base 6 and a sealing cover 7, as shown in fig. 3, the base 6 is provided with a first through hole 8 penetrating through the base 6, the base 6 is further provided with a second through hole 9 perpendicular to and communicated with the first through hole 8, the opening of the second through hole 9 is upward, a limiting bulge 11 is arranged at the intersection of the first through hole 8 and the second through hole 9, when the pipelines are sleeved at two ends of the first through hole 8 and matched with the first through hole 8, the end surfaces of the two pipelines just tightly abut against the outer side surface of the limiting bulge 11, so that the limiting bulge 11 not only communicates the two pipelines, but also can limit the two pipelines, a flow resistance block 12 is detachably sleeved in the second through hole 9, the flow resistance block 12 is put in or taken out from the opening of the second through hole 9, namely, the flow resistance block 12 is put in the second through hole 9 from top to bottom, the flow resistance block 12 falls to the joint of the second through hole 9 and the first through hole 8 under the action of self, as shown in FIG. 4, the flow blocking block 12 is provided with a third through hole 10 along the axial direction of the first through hole 8, the third through hole 10 is communicated with the first through hole 8, so that oil can pass through smoothly, the oil amount flowing through the flow blocking block 12 is controlled by controlling the aperture size of the third through hole 10, the sealing cover 7 is fixed above the base 6 through a fastening piece, and a sealing piece is further arranged between the sealing cover 7 and the contact surface of the base 6 to prevent the oil from leaking. The aperture of the third through hole 10 in the first and

second flow resistors

46 and 47 can be changed according to different test condition requirements.

The second through hole 9 is a square hole, correspondingly, the flow resistance block 12 is also a square block, so that the flow resistance block 12 is in plane-to-plane contact with the inner wall of the second through hole 9, which is different from arc-shaped curved surface contact, the contact surface between the flow resistance block 12 and the inner wall of the second through hole 9 is increased to the maximum extent, the friction force between the flow resistance block 12 and the inner wall of the second through hole 9 is increased, and the stability of the flow resistance block 12 is increased.

The bottom surface of the sealing cover 7 extends downwards to form a protrusion 13, when the sealing cover 7 is fixedly assembled above the base 6, the protrusion 13 is just matched in the second through hole 9, the bottom of the protrusion 13 abuts against the upper surface of the flow resistance block 12, the effect of pressing the flow resistance block 12 is achieved, the flow resistance block 12 is prevented from shaking under the pushing of oil, therefore, gaps are generated, the oil can be accumulated in the gaps for a long time, the accuracy of oil quantity data is influenced, and the waste of the oil is increased.

As shown in fig. 3 and 4, the upper surface of the flow resistance block 12 is an arc surface, and a thread counter bore is formed in the middle of the arc surface, where the arc surface can reduce the contact area between the flow resistance block 12 and the second through hole 9, so that the flow resistance block 12 is convenient to detach and mount, a thread counter bore is formed in the middle of the arc surface, and another screw or bolt with an external thread is formed to match the screw or bolt with the counter bore, so that the flow resistance block 12 can be very conveniently placed in or detached from the second through hole 9.

The tests that this equipment can carry out include: flow performance, start-up time, regulated pressure hysteresis, valve block opening pressure, etc.

If starting time, under the conditions of specified test oil product, oil temperature and test flow resistance, the oil pump is arranged on the equipment for testing, the oil pump is lifted to a specified rotating speed from rest within the specified time, the total running time is not less than 30s, the time from starting to establishing specified pressure is measured and recorded, and the time is the starting time.

When the pressure is regulated, under the specified conditions of test oil, oil temperature, test flow resistance and valve group signals, the oil pump is raised from static to the highest rotating speed, the rotating speed is lowered to the static state after being stabilized, parameters such as the rotating speed of the oil pump, the pressure of an outlet of the pump, the pipeline pressure of the main oil circuit 40, the flow and the like are measured and recorded, a relation curve of the rotating speed and the pipeline pressure of the main oil circuit 40 is obtained, and the pressure value behind the inflection point of the pipeline pressure curve of the main oil circuit 40 is the oil pump regulating pressure. Respectively under the conditions of specified test oil, oil temperature, rotating speed, test flow resistance and valve group signals, regulating the duty ratio of the valve group from 0% to 100% at a specified regulating speed, regulating the duty ratio of the valve group to 0% at the same speed, measuring the duty ratio of the oil pump valve group, pump outlet pressure, pipeline pressure of the main oil way 40, oil temperature and the like, recording measured values, obtaining a relation curve of the duty ratio of the valve group and the pipeline pressure of the main oil way 40, and calculating the difference value of the maximum duty ratio under the same pressure condition.

Under the conditions of specified test oil products and oil temperatures, the rotating speed of the oil pump is increased to 2000r/min, the opening of a valve bank at the outlet of the pump is adjusted from 100% to 0% after the outlet pressure is stabilized for 10s, the outlet pressure, the flow, the oil temperature and the like of the pump are measured, the measured value is recorded, a relation curve of the outlet pressure and the flow of the pump is obtained, and the pressure value corresponding to the flow reduction inflection point is the opening pressure of the valve bank.

In addition, the setting of the flow resistance of the equipment is according to the actual working condition simulation requirement, an oil pump is installed on the equipment before a test, the rotating speed of the oil pump is adjusted to enable the flow to reach a specified value, the main oil way 40 pipeline valve group is adjusted under the condition that the flow is fixed, the pipeline pressure of the main oil way 40 reaches a specified pressure value, then the pump outlet valve group is adjusted, the difference between the pump outlet pressure and the pipeline pressure of the main oil way 40 reaches the test flow resistance requirement value, and the opening degrees of the pump outlet valve group and the main oil way 40 pipeline valve group are recorded after the.

It should be noted that, it is needless to say that the data relating to the pressure sensor, the flow meter 48, the proportional valve, the series of valve banks, and the like is defaulted to be processed intelligently by an automated inspection device.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims

1. The utility model provides a multi-functional test calibration equipment of oil pump, its characterized in that, it includes oil tank (1), the pump body (2) that awaits measuring, actuating mechanism (3), first detection oil circuit (4) and second detection oil circuit (5), the pump body (2) that awaits measuring is connected with oil tank (1) and actuating mechanism (3), make actuating mechanism (3) drive the pump body (2) that awaits measuring inhale oil from oil tank (1) in, first detection oil circuit (4) and second detection oil circuit (5) and oil tank (1) between all form the return circuit, and first detection oil circuit (4) and second detection oil circuit (5) all are connected with the pump body (2) that awaits measuring and just through the pump body (2) that awaits measuring.

2. The oil pump multifunctional test calibration device according to claim 1, characterized in that: the first detection oil way (4) comprises a main oil way (40), a lubrication oil way (41), a first pressure sensor (42), a second pressure sensor (43), a first valve group (44), a second valve group (45), a first flow resistor (46), a second flow resistor (47) and a flow meter (48), wherein the main oil way (40) is connected to the oil tank (1) and sequentially connected with the pump body (2) to be detected, the first pressure sensor (42), the first valve group (44), the first flow resistor (46), the second flow resistor (47), the second valve group (45) and the flow meter (48), and finally returns to the oil tank (1) to form a main oil way (40) loop; the starting point of the lubricating oil path (41) is positioned between the first flow resistor (46) and the second flow resistor (47), and the lubricating oil path is sequentially connected with the second pressure sensor (43) and the pump body (2) to be tested and finally returned to the oil tank (1) to form a loop of the lubricating oil path (41).

3. The oil pump multifunctional test calibration device according to claim 1, characterized in that: the second detection oil way (5) comprises an oil conveying way (50), a lubricating branch (51), a first proportional valve (52), a second proportional valve (53) and a flowmeter (48), the oil conveying way (50) is connected to the first pressure sensor (42), sequentially connected with the first valve bank (44), the first proportional valve (52), the second proportional valve (53) and the flowmeter (48), and finally returned to the oil tank (1) to form an oil conveying way (50) loop; the starting point of the lubricating branch (51) is positioned between the first valve group (44) and the first proportional valve (52), and the starting point of the lubricating branch (51) is sequentially connected with the second pressure sensor (43) and the pump body (2) to be tested and finally returns to the oil tank (1) to form a lubricating branch (51) loop.

4. The oil pump multifunctional test calibration device according to claim 1, characterized in that: the driving mechanism (3) comprises a support (30), a variable frequency motor (31), a torque sensor (32) and a coupler (33), the variable frequency motor (31) is fixed on the support (30), an output shaft of the variable frequency motor (31) is connected with the torque sensor (32), and an output shaft of the variable frequency motor (31) is connected to a main shaft of the pump body (2) to be measured through the coupler (33).

5. The oil pump multifunctional test calibration device according to claim 2, characterized in that: the main oil path (40), the lubricating oil path (41), the oil delivery path (50) and the lubricating branch (51) are all pipelines.

6. The oil pump multifunctional test calibration device according to claim 2, characterized in that: the first flow resistor (46) and the second flow resistor (47) comprise a base (6) and a sealing cover (7), the base (6) is provided with a first through hole (8) penetrating through the base (6), the base (6) is also provided with a second through hole (9) which is perpendicular to and intercommunicated with the first through hole (8), the opening of the second through hole (9) is upward, a limiting bulge (11) is arranged at the intersection of the first through hole (8) and the second through hole (9), when a pipeline is sleeved at two ends of the first through hole (8) and matched with the first through hole (8), the end surfaces of the two pipelines just abut against the outer side surface of the limiting bulge (11), a flow resistance block (12) is detachably sleeved in the second through hole (9), two side surfaces of the flow resistance block (12) abut against the inner side surface of the limiting bulge (11), the flow resistance block (12) is provided with a third through hole (10) along the axial direction of the first through hole (8), and the third through hole (10) is intercommunic, the oil quantity flowing through the flow resistance block (12) is controlled by controlling the aperture size of the third through hole (10), and the sealing cover (7) is fixed above the base (6).

7. The oil pump multifunctional test calibration device according to claim 6, characterized in that: the second through hole (9) is a square hole.

8. The oil pump multifunctional test calibration device according to claim 6 or 7, characterized in that: a bulge (13) extends downwards from the bottom surface of the sealing cover (7), when the sealing cover (7) is fixedly assembled above the base (6), the bulge (13) is just matched in the second through hole (9), and the bottom of the bulge (13) is propped against the upper surface of the flow resistance block (12).

9. The oil pump multifunctional test calibration device according to claim 6, characterized in that: the upper surface of the flow resistance block (12) is an arc surface, and a threaded counter bore is formed in the middle of the arc surface.