CN108732077B - Engine oil duct pipeline penetration detection method - Google Patents
Engine oil duct pipeline penetration detection method Download PDFInfo
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- CN108732077B CN108732077B CN201810554529.6A CN201810554529A CN108732077B CN 108732077 B CN108732077 B CN 108732077B CN 201810554529 A CN201810554529 A CN 201810554529A CN 108732077 B CN108732077 B CN 108732077B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
Abstract
The invention discloses a method for detecting the permeation of an engine oil duct pipeline, which adopts an engine oil duct pipeline permeation detection device to detect the permeation of the engine oil duct pipeline; the engine oil duct pipeline penetration detection device comprises an upper fast-assembly liquid level detection part, a lower fast-assembly water injection and liquid level detection part, a device electric and main control operation part and a pipeline to be detected; the invention realizes the water injection control of the pipeline to be tested by controlling the water pump and the control valve through the industrial personal computer, realizes the penetration detection of the pipeline to be tested through the liquid level feedback signal acquisition and processing of the corresponding photoelectric liquid level sensor, and can perform real-time on-machine inspection on the states of the control valve and the sensor.
Description
The invention relates to a method for detecting permeation of a fluid medium pipeline, in particular to a method for detecting permeation of an engine oil duct pipeline.
Background
The penetration detection of the engine oil duct is a method for detecting whether the engine oil supply duct is unblocked, and is widely applied to the detection of oil paths of various types of engines. At present, no convenient automatic detection method for the leakage of the engine oil duct exists, manual or semi-automatic detection methods are often adopted, detection is time-consuming and labor-consuming, and accuracy and consistency of detection results are difficult to ensure, so that an automatic engine oil duct penetration detection method is needed.
Disclosure of Invention
In order to solve the problems, the invention provides an engine oil duct pipeline penetration detection method.
The engine oil duct pipeline penetration detection method is characterized in that the engine oil duct pipeline penetration detection device comprises an upper fast-assembly liquid level detection part, a lower fast-assembly water injection and liquid level detection part, a device electric and main control operation part and a pipeline to be detected.
Further, the upper fast-assembling liquid level detection part comprises a liquid storage cavity (1), a photoelectric liquid level sensor A (2), a photoelectric liquid level sensor B (10), a fast-assembling sealing interface A (11) and an overflow pipe (9), wherein:
the liquid storage cavity (1) is a transparent conical tubular cavity, water level scales are arranged on the transparent pipe wall, and the volume of the liquid storage cavity (1) is larger than the pipeline volume between the photoelectric liquid level sensor A (2) and the control valve A (15); the overflow pipe (9) is positioned at the upper part of the transparent conical pipe and is used for preventing liquid medium in the liquid storage cavity (1) from overflowing from the top end of the liquid storage cavity (1), and the tail end of the overflow pipe (9) is connected with the port A of the three-way pipe fitting B (18) through a hose; the distance between the photoelectric liquid level sensor A (2) and the photoelectric liquid level sensor B (10) in the axial direction of the liquid storage cavity (1) is a known determined value, and the two liquid level sensors are used for sensing the high liquid level and the low liquid level in the liquid storage cavity (1).
Further, the lower fast-assembling water injection and liquid level detection part consists of a movable water tank (5), a water pump (6), a fast-assembling sealing interface C (7), a fast-assembling sealing interface B (13), a photoelectric liquid level sensor C (14) and a control valve A
(15) Three-way pipe fitting A (16), check valve (8), control valve B (17), three-way pipe fitting B (18) are constituteed, wherein: the photoelectric liquid level sensor C (14), the control valve A (15), the three-way pipe fitting A (16), the control valve B (17) and the three-way pipe fitting B (18) are arranged from the quick-assembly sealing interface B (13) downwards in sequence; the right side of the three-way pipe fitting A (16) is connected with a one-way valve (8), the one-way valve (8) is sequentially connected with a quick-assembly sealing interface C (7), a water pump (6) and a movable water tank (5) from right to left, and the flow direction of liquid medium is from the end of the water pump (6) to the end of the three-way pipe fitting A (16); the quick-assembly sealing interface B (13) is used for being quickly connected with a pipeline (12) to be tested, the photoelectric liquid level sensor C (14) is used for sensing the state of the water level of the part, and the control valve A (15) is used for controlling the opening and closing of water discharged in the water injection and permeation inspection process of the oil duct pipeline; the three-way pipe fitting A (16) is used for being connected with the control valve A (15), the one-way valve (8) and the control valve B (17) respectively, the control valve B (17) is responsible for closing a water discharge/return channel in the water injection process, and the water stored between the control valve A (15) and the control valve B (17) is emptied before the permeation inspection; the water pump (6) is responsible for supplying water from the movable water tank (5) to the detection part.
Further, the upper end of the pipeline (12) to be tested is connected with the upper fast-assembling liquid level detection part through a fast-assembling sealing interface A (11), and the lower end is connected with the lower fast-assembling water injection and liquid level detection part through a fast-assembling sealing interface B (13).
Further, the electric and main control operation part of the device consists of an industrial personal computer (3) and a wireless handheld controller (4), wherein: the industrial personal computer (3) is connected with the photoelectric liquid level sensor A (2), the photoelectric liquid level sensor B (10), the photoelectric liquid level sensor C (14), the control valve A (15), the control valve B (17) and the water pump (6) through electric control lines, the industrial personal computer (3) is responsible for collecting sensor data and controlling the control valve A (15), the control valve B (17) and the water pump (6), and the wireless handheld controller (4) is provided with an independent man-machine interaction interface and can be connected with the industrial personal computer (3) in a wireless communication manner, so that real-time monitoring and wireless handheld control operation on the testing process of the inspection device are realized.
Further, based on the engine oil duct pipeline penetration detection device, the engine oil duct pipeline penetration detection method comprises the following steps:
1) the upper end of the pipeline (12) to be tested is connected with an upper fast-assembling liquid level detection part through a fast-assembling sealing interface A (11), and the lower end is connected with a lower fast-assembling water injection and liquid level detection part through a fast-assembling sealing interface B (13); the industrial personal computer (3) is connected with a photoelectric liquid level sensor A (2), a photoelectric liquid level sensor B (10), a photoelectric liquid level sensor C (14), a control valve A (15), a control valve B (17) and a water pump (6) through an electric control circuit;
2) Checking the state of the control valve B (17): closing the control valve B (17) and opening the control valve A (15); then the water pump (6) is started and the time is T 1 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 1 If the photoelectric liquid level sensor C (14) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 1 Internal triggering photoelectric liquid level sensor C (14), timing is T 2 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 2 After that, the water pump (6) is turned off and the time is T 3 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 3 (ΔT 3 >ΔT 2 ) Photoelectric liquid level sensor C (14) touchThe state of the valve is unchanged, and the control valve B (17) is normal; as in the standard period DeltaT 3 The internal photoelectric liquid level sensor C (14) triggers the state change, and then alarms to prompt faults;
3) Checking the state of the control valve A (15): after the state of the control valve B (17) is checked to be qualified, the control valve A (15) is further closed; opening the control valve B (17), emptying water stored between the control valve A (15) and the control valve B (17), and timing to be T 4 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 4 (ΔT 4 ＝ΔT 3 ) The triggering state of the photoelectric liquid level sensor C (14) is not changed, and the control valve A (15) is normal; as in the standard period DeltaT 4 The internal photoelectric liquid level sensor C (14) triggers the state change, and then alarms to prompt faults;
4) Checking the state of the photoelectric liquid level sensor C (14): after the states of the control valve B (17) and the control valve A (15) are checked to be qualified, the control valve B (17) is opened, and then the control valve A (15) is opened; when the state of the photoelectric liquid level sensor C (14) is triggered to change, the control valve A (15) is closed, and whether the state of the photoelectric liquid level sensor C (14) is correct or not is checked by comparing the liquid level reading with upper and lower limit score lines of an upper calibration value of a scale through the observation window of the lower fast-assembling water injection and liquid level detection part;
5) Checking the state of the photoelectric liquid level sensor A (2): after the states of the control valve B (17), the control valve A (15) and the photoelectric liquid level sensor C (14) are checked to be qualified, the control valve B (17) is closed, the control valve A (15) is opened, the water pump (6) is started, and when the photoelectric liquid level sensor A (2) is triggered, the timing is T 5 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 5 Then, the water pump (6) is shut down, the control valve A (15) is closed, the control valve B (17) is opened, and water is stored between the sections of the control valve A (15) and the control valve B (17); then, a control valve A (15) is opened, when the state of the photoelectric liquid level sensor A (2) is triggered to change, the control valve A (15) is closed, the liquid level is read through a scale on the liquid storage cavity (1), and the state of the photoelectric liquid level sensor A (2) is checked to be correct by comparing with upper and lower limit lines of a calibration value;
6) Checking the state of the photoelectric liquid level sensor B (10): after the state of the photoelectric liquid level sensor A (2) is checked to be qualified, a control valve A (15) is opened; when the state of the photoelectric liquid level sensor B (10) is triggered to change, the control valve A (15) is closed, the liquid level is read through the upper scale of the liquid storage cavity (1) and is compared with the upper limit line and the lower limit line of the calibration value, and whether the state of the photoelectric liquid level sensor B (10) is correct or not is checked;
7) And (3) oil duct pipeline water injection control: closing control valve B (17), opening control valve A (15), starting water pump (6), and timing to be T 6 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 6 (ΔT 6 ＝ΔT 1 ) If the photoelectric liquid level sensor C (14) is not triggered yet, the water pump (6) is turned off, and an alarm is given to prompt a fault; as in the standard period DeltaT 6 Photoelectric liquid level sensor C (14) under internal triggering, timing is T 7 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 7 If the photoelectric liquid level sensor B (10) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 7 Internally triggered photoelectric liquid level sensor B (10), the timing is T 8 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 8 If the photoelectric liquid level sensor A (2) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 8 An internal triggering photoelectric liquid level sensor A (2) with a timing of T 9 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 9 After that, the water pump (6) is turned off, and the control valve A (15) is closed; then the control valve B (17) is opened, water is stored between the sections of the control valve A (15) and the control valve B (17) and is timed to be T 10 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 10 (ΔT 10 >ΔT 9 ) The photoelectric liquid level sensor A (2) is still triggered, and then the oil duct water injection control flow is completed; as in the standard period DeltaT 10 The internal photoelectric liquid level sensor A (2) triggers the state change, and then alarms to prompt faults;
8) And (3) oil duct pipeline penetration detection: open control valve A (15) and time at T 11 The method comprises the steps of carrying out a first treatment on the surface of the Such as the lapse of a safety period DeltaT 11 (ΔT 11 >ΔT 9 ) The photoelectric liquid level sensor A (2) is still triggered, and then an alarm is given to prompt a fault; as in the standard period DeltaT 11 The internal photoelectric liquid level sensor A (2) triggers the state change, and the timing is T 12 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 12 (ΔT 12 >ΔT 8 ) Still triggering the photoelectric level sensor B (10), orThe photoelectric liquid level sensor C (14) triggers the state change, and then alarms to prompt faults; as in the standard period DeltaT 12 The internal photoelectric liquid level sensor B (10) triggers the state change, and the timing is T 13 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 13 (ΔT 13 >ΔT 7 ) The photoelectric liquid level sensor C (14) is still triggered, and then an alarm prompts a fault; as in the standard period DeltaT 13 The internal photoelectric liquid level sensor C (14) triggers the state change, and the timing is T 14 The method comprises the steps of carrying out a first treatment on the surface of the Calculation of DeltaT 14 ＝T 14 –T 13 And the permeation time of the oil duct pipeline is recorded.
Further, after the primary permeation detection of the engine oil duct pipeline is finished, the oil duct pipeline is controlled by water injection, and the oil duct pipeline permeation detection step can be sequentially executed again so as to obtain repeated measurement values of multiple permeation times of the same oil duct pipeline.
Further, the upper limit line and the lower limit line of the calibration value are taken as upper limit positions and lower limit positions of the actual liquid level when the photoelectric liquid level sensor A (2) and the photoelectric liquid level sensor B (10) are triggered for a plurality of times in the same liquid level state.
Further, the standard time period DeltaT 1 ，ΔT 2 ，ΔT 3 ，ΔT 4 ，ΔT 5 ，ΔT 6 ，ΔT 7 ，ΔT 8 ，ΔT 9 ，ΔT 10 ，ΔT 11 ，ΔT 12 ，ΔT 13 The value of (1) is taken as a calibration value of the engine oil duct pipeline penetration detection device and is stored in the industrial personal computer (3).
The beneficial effects of the invention are as follows: by adopting the method for detecting the permeation of the engine oil duct pipeline, the single or multiple repeated permeation inspection test of the engine oil duct pipeline can be automatically completed, the full-automatic program-controlled operation can be realized based on the automatic monitoring and capturing technology of the flow section of the liquid flow, and compared with the existing manual detection, the method has the advantages of improving the detection efficiency, reducing the labor cost and the like.
Drawings
FIG. 1 is a schematic diagram of an engine oil duct pipeline penetration detection device.
Fig. 2 is a flowchart for checking the state of the control valve B (17).
Fig. 3 is a flowchart for checking the state of the control valve a (15).
Fig. 4 is a flowchart for checking the state of the photoelectric level sensor C (14).
Fig. 5 is a flowchart for checking the state of the photoelectric level sensor a (2).
Fig. 6 is a flowchart for checking the state of the photoelectric level sensor B (10).
FIG. 7 is a flow chart of oil gallery piping water injection control.
FIG. 8 is a flow chart of oil passage line permeation detection.
Fig. 9 wireless handheld controller detects a manipulation interface.
FIG. 10 shows a wireless handheld controller detection result display interface.
The labels in the figures are as follows: 1 is a liquid storage cavity, 2 is a photoelectric liquid level sensor A,3 is an industrial personal computer, 4 is a wireless handheld controller, 5 is a movable water tank, 6 is a water pump, 7 is a fast-assembling sealing interface C,8 is a one-way valve, 9 is an overflow pipe, 10 is a photoelectric liquid level sensor B,11 is a fast-assembling sealing interface A,12 is a pipeline to be tested, 13 is a fast-assembling sealing interface B,14 is a photoelectric liquid level sensor C,15 is a control valve A,16 is a three-way pipe fitting A,17 is a control valve B, and 18 is a three-way pipe fitting B. .
Detailed Description
The invention is further described below with reference to the accompanying drawings and a specific embodiment.
The engine oil duct pipeline penetration detection method is characterized in that the engine oil duct pipeline penetration detection device comprises an upper fast-assembly liquid level detection part, a lower fast-assembly water injection and liquid level detection part, a device electric and main control operation part and a pipeline to be detected.
Further, the upper fast-assembling liquid level detection part comprises a liquid storage cavity (1), a photoelectric liquid level sensor A (2), a photoelectric liquid level sensor B (10), a fast-assembling sealing interface A (11) and an overflow pipe (9), wherein: the liquid storage cavity (1) is a transparent conical tubular cavity, water level scales are arranged on the transparent pipe wall, and the volume of the liquid storage cavity (1) is larger than the pipeline volume between the photoelectric liquid level sensor A (2) and the control valve A (15); the overflow pipe (9) is positioned at the upper part of the transparent conical pipe and is used for preventing liquid medium in the liquid storage cavity (1) from overflowing from the top end of the liquid storage cavity (1), and the tail end of the overflow pipe (9) is connected with the port A of the three-way pipe fitting B (18) through a hose; the distance between the photoelectric liquid level sensor A (2) and the photoelectric liquid level sensor B (10) in the axial direction of the liquid storage cavity (1) is a known determined value, and the two liquid level sensors are used for sensing the high liquid level and the low liquid level in the liquid storage cavity (1).
Further, the lower part fast-assembling water injection and liquid level detection part comprises a movable water tank (5), a water pump (6), a fast-assembling sealing interface C (7), a fast-assembling sealing interface B (13), a photoelectric liquid level sensor C (14), a control valve A (15), a three-way pipe fitting A (16), a one-way valve (8), a control valve B (17) and a three-way pipe fitting B (18), wherein: the photoelectric liquid level sensor C (14), the control valve A (15), the three-way pipe fitting A (16), the control valve B (17) and the three-way pipe fitting B (18) are arranged from the quick-assembly sealing interface B (13) downwards in sequence; the right side of the three-way pipe fitting A (16) is connected with a one-way valve (8), the one-way valve (8) is sequentially connected with a quick-assembly sealing interface C (7), a water pump (6) and a movable water tank (5) from right to left, and the flow direction of liquid medium is from the end of the water pump (6) to the end of the three-way pipe fitting A (16); the quick-assembly sealing interface B (13) is used for being quickly connected with a pipeline (12) to be tested, the photoelectric liquid level sensor C (14) is used for sensing the state of the water level of the part, and the control valve A (15) is used for controlling the opening and closing of water discharged in the water injection and permeation inspection process of the oil duct pipeline; the three-way pipe fitting A (16) is used for being connected with the control valve A (15), the one-way valve (8) and the control valve B (17) respectively, the control valve B (17) is responsible for closing a water discharge/return channel in the water injection process, and the water stored between the control valve A (15) and the control valve B (17) is emptied before the permeation inspection; the water pump (6) is responsible for supplying water from the movable water tank (5) to the detection part.
Further, the upper end of the pipeline (12) to be tested is connected with the upper fast-assembling liquid level detection part through a fast-assembling sealing interface A (11), and the lower end is connected with the lower fast-assembling water injection and liquid level detection part through a fast-assembling sealing interface B (13).
Further, the electric and main control operation part of the device consists of an industrial personal computer (3) and a wireless handheld controller (4), wherein: the industrial personal computer (3) is connected with the photoelectric liquid level sensor A (2), the photoelectric liquid level sensor B (10), the photoelectric liquid level sensor C (14), the control valve A (15), the control valve B (17) and the water pump (6) through electric control lines, the industrial personal computer (3) is responsible for collecting sensor data and controlling the control valve A (15), the control valve B (17) and the water pump (6), and the wireless handheld controller (4) is provided with an independent man-machine interaction interface and can be connected with the industrial personal computer (3) in a wireless communication manner, so that real-time monitoring and wireless handheld control operation on the testing process of the inspection device are realized.
Further, based on the engine oil duct pipeline penetration detection device, the engine oil duct pipeline penetration detection method comprises the following steps:
1) the upper end of the pipeline (12) to be tested is connected with an upper fast-assembling liquid level detection part through a fast-assembling sealing interface A (11), and the lower end is connected with a lower fast-assembling water injection and liquid level detection part through a fast-assembling sealing interface B (13); the industrial personal computer (3) is connected with a photoelectric liquid level sensor A (2), a photoelectric liquid level sensor B (10), a photoelectric liquid level sensor C (14), a control valve A (15), a control valve B (17) and a water pump (6) through an electric control circuit;
2) Checking the state of the control valve B (17): closing the control valve B (17) and opening the control valve A (15); then the water pump (6) is started and the time is T 1 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 1 If the photoelectric liquid level sensor C (14) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 1 Internal triggering photoelectric liquid level sensor C (14), timing is T 2 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 2 After that, the water pump (6) is turned off and the time is T 3 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 3 (ΔT 3 >ΔT 2 ) The triggering state of the photoelectric liquid level sensor C (14) is not changed, and the control valve B (17) is normal; as in the standard period DeltaT 3 The internal photoelectric liquid level sensor C (14) triggers the state change, so that the alarm prompts faults, and the flow chart is shown in figure 2;
3) Checking the state of the control valve A (15): after the state of the control valve B (17) is checked to be qualified, the control valve A (15) is further closed; opening the control valve B (17), emptying water stored between the control valve A (15) and the control valve B (17), and timing to be T 4 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 4 (ΔT 4 ＝ΔT 3 ) The triggering state of the photoelectric liquid level sensor C (14) is not changed, and the control valve A (15) is normal; as in the standard period DeltaT 4 The internal photoelectric liquid level sensor C (14) triggers the state change, so that the alarm prompts faults, and the flow chart is shown in figure 3;
4) Checking the state of the photoelectric liquid level sensor C (14): after the states of the control valve B (17) and the control valve A (15) are checked to be qualified, the control valve B (17) is opened, and then the control valve A (15) is opened; when the state of the photoelectric liquid level sensor C (14) is triggered to change, the control valve A (15) is closed, and whether the state of the photoelectric liquid level sensor C (14) is correct or not is checked by comparing the liquid level reading with upper and lower limit dividing lines of an upper calibration value of a scale through an observation window of the lower fast-assembling water injection and liquid level detection part, wherein a flow chart is shown in figure 4;
5) Checking the state of the photoelectric liquid level sensor A (2): after the states of the control valve B (17), the control valve A (15) and the photoelectric liquid level sensor C (14) are checked to be qualified, the control valve B (17) is closed, the control valve A (15) is opened, the water pump (6) is started, and when the photoelectric liquid level sensor A (2) is triggered, the timing is T 5 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 5 Then, the water pump (6) is shut down, the control valve A (15) is closed, the control valve B (17) is opened, and water is stored between the sections of the control valve A (15) and the control valve B (17); then, the control valve A (15) is opened, when the photoelectric liquid level sensor A (2) triggers the state change, the control valve A (15) is closed, the liquid level is read through the upper scale of the liquid storage cavity (1), and the state of the photoelectric liquid level sensor A (2) is checked to be correct by comparing with the upper limit line and the lower limit line of the calibration value, and the flow chart is shown in figure 5;
6) Checking the state of the photoelectric liquid level sensor B (10): after the state of the photoelectric liquid level sensor A (2) is checked to be qualified, a control valve A (15) is opened; when the state of the photoelectric liquid level sensor B (10) is triggered to change, the control valve A (15) is closed, the liquid level is read through the scale on the liquid storage cavity (1) and is compared with the upper limit line and the lower limit line of the calibration value, whether the state of the photoelectric liquid level sensor B (10) is correct or not is checked, and the flow chart is shown in figure 6;
7) And (3) oil duct pipeline water injection control: closing control valve B (17), opening control valve A (15), starting water pump (6), and timing to be T 6 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 6 (ΔT 6 ＝ΔT 1 ) If the photoelectric liquid level sensor C (14) is not triggered yet, the water pump (6) is turned off, and an alarm is given to prompt a fault; as in the standard period DeltaT 6 Photoelectric liquid level sensor C (14) under internal triggering, timing is T 7 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 7 If the photoelectric liquid level sensor B (10) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 7 Internally triggered photoelectric liquid level sensor B (10), the timing is T 8 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 8 If the photoelectric liquid level sensor A (2) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 8 An internal triggering photoelectric liquid level sensor A (2) with a timing of T 9 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 9 After that, the water pump (6) is turned off, and the control valve A (15) is closed; then the control valve B (17) is opened, water is stored between the sections of the control valve A (15) and the control valve B (17) and is timed to be T 10 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 10 (ΔT 10 >ΔT 9 ) The photoelectric liquid level sensor A (2) is still triggered, and then the oil duct water injection control flow is completed; as in the standard period DeltaT 10 The internal photoelectric liquid level sensor A (2) triggers the state change, so that the alarm prompts faults, and the flow chart is shown in figure 7;
8) And (3) oil duct pipeline penetration detection: open control valve A (15) and time at T 11 The method comprises the steps of carrying out a first treatment on the surface of the Such as the lapse of a safety period DeltaT 11 (ΔT 11 >ΔT 9 ) The photoelectric liquid level sensor A (2) is still triggered, and then an alarm is given to prompt a fault; as in the standard period DeltaT 11 The internal photoelectric liquid level sensor A (2) triggers the state change, and the timing is T 12 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 12 (ΔT 12 >ΔT 8 ) The photoelectric liquid level sensor B (10) is still triggered, or the photoelectric liquid level sensor C (14) triggers a state change, and then an alarm prompts a fault; as in the standard period DeltaT 12 The internal photoelectric liquid level sensor B (10) triggers the state change, and the timing is T 13 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 13 (ΔT 13 >ΔT 7 ) The photoelectric liquid level sensor C (14) is still triggered, and then an alarm is given to prompt the user of the failureA barrier; as in the standard period DeltaT 13 The internal photoelectric liquid level sensor C (14) triggers the state change, and the timing is T 14 The method comprises the steps of carrying out a first treatment on the surface of the Calculation of DeltaT 14 ＝T 14 –T 13 The permeation time of the oil duct pipeline is recorded, and the flow chart is shown in figure 8.
Further, after the primary permeation detection of the engine oil duct pipeline is finished, the oil duct pipeline is controlled by water injection, and the oil duct pipeline permeation detection step can be sequentially executed again so as to obtain repeated measurement values of multiple permeation times of the same oil duct pipeline.
Further, the upper limit line and the lower limit line of the calibration value are taken as upper limit positions and lower limit positions of the actual liquid level when the photoelectric liquid level sensor A (2) and the photoelectric liquid level sensor B (10) are triggered for a plurality of times in the same liquid level state.
Further, the standard time period DeltaT 1 ，ΔT 2 ，ΔT 3 ，ΔT 4 ，ΔT 5 ，ΔT 6 ，ΔT 7 ，ΔT 8 ，ΔT 9 ，ΔT 10 ，ΔT 11 ，ΔT 12 ，ΔT 13 The value of (1) is taken as a calibration value of the engine oil duct pipeline penetration detection device and is stored in the industrial personal computer (3).
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made according to the scope of the present invention are within the scope of the present invention.
Claims (4)
1. The engine oil duct pipeline penetration detection method is characterized in that the engine oil duct pipeline penetration detection device comprises an upper fast-assembly liquid level detection part, a lower fast-assembly water injection and liquid level detection part, a device electric and main control operation part and a pipeline to be detected;
the upper fast-assembling liquid level detection part comprises a liquid storage cavity (1), a photoelectric liquid level sensor A (2), a photoelectric liquid level sensor B (10), a fast-assembling sealing interface A (11) and an overflow pipe (9), wherein: the liquid storage cavity (1) is a transparent conical tubular cavity, a water level scale is arranged on the transparent pipe wall, and the volume of the liquid storage cavity (1) is larger than the volume of a pipeline between the photoelectric liquid level sensor A (2) and the control valve A (15); the overflow pipe (9) is positioned at the upper part of the transparent conical pipe and is used for preventing liquid medium in the liquid storage cavity (1) from overflowing from the top end of the liquid storage cavity (1), and the tail end of the overflow pipe (9) is connected with the port A of the three-way pipe fitting B (18) through a hose; the distance between the photoelectric liquid level sensor A (2) and the photoelectric liquid level sensor B (10) in the axial direction of the liquid storage cavity (1) is a known determined value, and the two liquid level sensors are used for sensing the high liquid level and the low liquid level in the liquid storage cavity (1);
the lower part fast-assembling water injection and liquid level detection part comprises movable water tank (5), water pump (6), fast-assembling sealing interface C (7), fast-assembling sealing interface B (13), photoelectric liquid level sensor C (14), control valve A (15), tee bend pipe fitting A (16), check valve (8), control valve B (17), tee bend pipe fitting B (18), wherein: the photoelectric liquid level sensor C (14), the control valve A (15), the three-way pipe fitting A (16), the control valve B (17) and the three-way pipe fitting B (18) are arranged from the quick-assembly sealing interface B (13) downwards in sequence; the right side of the three-way pipe fitting A (16) is connected with a one-way valve (8), the one-way valve (8) is sequentially connected with a quick-assembly sealing interface C (7), a water pump (6) and a movable water tank (5) from right to left, and the flow direction of liquid medium is from the end of the water pump (6) to the end of the three-way pipe fitting A (16); the quick-assembly sealing interface B (13) is used for being quickly connected with a pipeline (12) to be tested, the photoelectric liquid level sensor C (14) is used for sensing the state of the water level of the part, and the control valve A (15) is used for controlling the opening and closing of water discharged in the water injection and permeation inspection process of the oil duct pipeline; the three-way pipe fitting A (16) is used for being connected with the control valve A (15), the one-way valve (8) and the control valve B (17) respectively, the control valve B (17) is responsible for closing a water discharge/return channel in the water injection process, and the water stored between the control valve A (15) and the control valve B (17) is emptied before the permeation inspection; the water pump (6) is responsible for providing a water source for the detection part from the movable water tank (5);
the upper end of the pipeline (12) to be tested is connected with the upper fast-assembling liquid level detection part through a fast-assembling sealing interface A (11), and the lower end is connected with the lower fast-assembling water injection and liquid level detection part through a fast-assembling sealing interface B (13);
the electric and main control operation part of the device consists of an industrial personal computer (3) and a wireless handheld controller (4), wherein: the industrial personal computer (3) is connected with the photoelectric liquid level sensor A (2) and the photoelectric liquid level sensor B through an electric control circuit
(10) The photoelectric liquid level sensor C (14), the control valve A (15), the control valve B (17) and the water pump (6) are connected, the industrial personal computer (3) is responsible for collecting sensor data and controlling the control valve A (15), the control valve B (17) and the water pump (6), the wireless handheld controller (4) is provided with an independent human-computer interaction interface and can be in wireless communication connection with the industrial personal computer (3), and real-time monitoring and wireless handheld control operation of the testing process of the checking device are realized;
based on the engine oil duct pipeline penetration detection device, the engine oil duct pipeline penetration detection method comprises the following steps:
1) the upper end of the pipeline (12) to be tested is connected with an upper fast-assembling liquid level detection part through a fast-assembling sealing interface A (11), and the lower end is connected with a lower fast-assembling water injection and liquid level detection part through a fast-assembling sealing interface B (13); the industrial personal computer (3) is connected with the photoelectric liquid level sensor A (2) and the photoelectric liquid level sensor B through an electric control circuit
(10) The photoelectric liquid level sensor C (14), the control valve A (15), the control valve B (17) and the water pump (6) are connected;
2) Checking the state of the control valve B (17): closing the control valve B (17) and opening the control valve A (15); then the water pump (6) is started and the time is T 1 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 1 If the photoelectric liquid level sensor C (14) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 1 Internal triggering photoelectric liquid level sensor C (14), timing is T 2 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 2 After that, the water pump (6) is turned off and the time is T 3 ；
E.g. for a standard period of time DeltaT 3 ，ΔT 3 >ΔT 2 The triggering state of the photoelectric liquid level sensor C (14) is not changed, and the control valve B (17) is normal; as in the standard period DeltaT 3 The internal photoelectric liquid level sensor C (14) triggers the state change, and then alarms to prompt faults;
3) Checking the state of the control valve A (15): check-up in control valve B (17) statusAfter that, the control valve A (15) is further closed; opening the control valve B (17), emptying water stored between the control valve A (15) and the control valve B (17), and timing to be T 4 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 4 ，ΔT 4 ＝ΔT 3 The triggering state of the photoelectric liquid level sensor C (14) is not changed, and the control valve A (15) is normal; as in the standard period DeltaT 4 The internal photoelectric liquid level sensor C (14) triggers the state change, and then alarms to prompt faults;
4) Checking the state of the photoelectric liquid level sensor C (14): after the states of the control valve B (17) and the control valve A (15) are checked to be qualified, the control valve B (17) is opened, and then the control valve A (15) is opened; when the state of the photoelectric liquid level sensor C (14) is triggered to change, the control valve A (15) is closed, and whether the state of the photoelectric liquid level sensor C (14) is correct or not is checked by comparing the liquid level reading with upper and lower limit score lines of an upper calibration value of a scale through the observation window of the lower fast-assembling water injection and liquid level detection part;
5) Checking the state of the photoelectric liquid level sensor A (2): after the states of the control valve B (17), the control valve A (15) and the photoelectric liquid level sensor C (14) are checked to be qualified, the control valve B (17) is closed, the control valve A (15) is opened, the water pump (6) is started, and when the photoelectric liquid level sensor A (2) is triggered, the timing is T 5 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 5 Then, the water pump (6) is shut down, the control valve A (15) is closed, the control valve B (17) is opened, and water is stored between the sections of the control valve A (15) and the control valve B (17); then, a control valve A (15) is opened, when the state of the photoelectric liquid level sensor A (2) is triggered to change, the control valve A (15) is closed, the liquid level is read through a scale on the liquid storage cavity (1), and the state of the photoelectric liquid level sensor A (2) is checked to be correct by comparing with upper and lower limit lines of a calibration value;
6) Checking the state of the photoelectric liquid level sensor B (10): after the state of the photoelectric liquid level sensor A (2) is checked to be qualified, a control valve A (15) is opened; when the state of the photoelectric liquid level sensor B (10) is triggered to change, the control valve A (15) is closed, the liquid level is read through the upper scale of the liquid storage cavity (1) and is compared with the upper limit line and the lower limit line of the calibration value, and whether the state of the photoelectric liquid level sensor B (10) is correct or not is checked;
7) And (3) oil duct pipeline water injection control: closing the control valve B (17) and opening the control valve A #15 Starting the water pump (6) and timing to be T 6 The method comprises the steps of carrying out a first treatment on the surface of the E.g. for a standard period of time DeltaT 6 ，ΔT 6 ＝ΔT 1 If the photoelectric liquid level sensor C (14) is not triggered yet, the water pump (6) is turned off, and an alarm is given to prompt a fault; as in the standard period DeltaT 6 Internal triggering photoelectric liquid level sensor C (14), timing is T 7 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 7 If the photoelectric liquid level sensor B (10) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 7 Internally triggered photoelectric liquid level sensor B (10), the timing is T 8 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 8 If the photoelectric liquid level sensor A (2) is not triggered yet, the water pump (6) is shut down, and an alarm is given to prompt a fault; as in the standard period DeltaT 8 An internal triggering photoelectric liquid level sensor A (2) with a timing of T 9 The method comprises the steps of carrying out a first treatment on the surface of the And then for an additional period of time DeltaT 9 After that, the water pump (6) is turned off, and the control valve A (15) is closed; then the control valve B (17) is opened, water is stored between the sections of the control valve A (15) and the control valve B (17) and is timed to be T 10 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 10 ，ΔT 10 >ΔT 9 The photoelectric liquid level sensor A (2) is still triggered, and then the oil duct water injection control flow is completed; as in the standard period DeltaT 10 The internal photoelectric liquid level sensor A (2) triggers the state change, and then alarms to prompt faults;
8) And (3) oil duct pipeline penetration detection: open control valve A (15) and time at T 11 The method comprises the steps of carrying out a first treatment on the surface of the Such as the lapse of a safety period DeltaT 11 ，ΔT 11 >ΔT 9 The photoelectric liquid level sensor A (2) is still triggered, and then an alarm prompts a fault; as in the standard period DeltaT 11 The internal photoelectric liquid level sensor A (2) triggers the state change, and the timing is T 12 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 12 ，ΔT 12 >ΔT 8 The photoelectric liquid level sensor B (10) is still triggered, or the photoelectric liquid level sensor C (14) triggers a state change, and then an alarm prompts a fault; as in the standard period DeltaT 12 The internal photoelectric liquid level sensor B (10) triggers the state change, and the timing is T 13 The method comprises the steps of carrying out a first treatment on the surface of the If the safety period DeltaT passes again 13 ，ΔT 13 >ΔT 7 The photoelectric liquid level sensor C (14) is still triggered, and then an alarm prompts a fault; as in the standard period DeltaT 13 The internal photoelectric liquid level sensor C (14) triggers the state change, and the timing is T 14 The method comprises the steps of carrying out a first treatment on the surface of the Calculation of DeltaT 14 ＝T 14 –T 13 And the permeation time of the oil duct pipeline is recorded.
2. The engine oil duct pipe penetration detection method according to claim 1, characterized in that: after the primary permeation detection of the engine oil duct pipeline is finished, the oil duct pipeline is controlled by water injection, and the oil duct pipeline permeation detection step can be sequentially executed again so as to obtain repeated measurement values of multiple permeation time of the same oil duct pipeline.
3. The engine oil duct pipe penetration detection method according to claim 1, characterized in that: the photoelectric liquid level sensor A (2) is taken from the upper limit line and the lower limit line of the calibration value, and the photoelectric liquid level sensor B (10) is positioned at the upper limit position and the lower limit position of the actual liquid level when the same liquid level value state is triggered for a plurality of times.
4. The engine oil duct pipe penetration detection method according to claim 1, characterized in that: the standard time period DeltaT 1 ，ΔT 2 ，ΔT 3 ，ΔT 4 ，ΔT 5 ，ΔT 6 ，ΔT 7 ，ΔT 8 ，ΔT 9 ，ΔT 10 ，ΔT 11 ，ΔT 12 ，ΔT 13 The value of (1) is taken as a calibration value of the engine oil duct pipeline penetration detection device and is stored in the industrial personal computer (3).
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