CN113720277A - Automatic measurement mechanism and automatic measurement method for fuel nozzle atomization angle - Google Patents
Automatic measurement mechanism and automatic measurement method for fuel nozzle atomization angle Download PDFInfo
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- CN113720277A CN113720277A CN202110983437.1A CN202110983437A CN113720277A CN 113720277 A CN113720277 A CN 113720277A CN 202110983437 A CN202110983437 A CN 202110983437A CN 113720277 A CN113720277 A CN 113720277A
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- 238000000889 atomisation Methods 0.000 title claims abstract description 53
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 238000005259 measurement Methods 0.000 title abstract description 20
- 238000000691 measurement method Methods 0.000 title description 4
- 239000000523 sample Substances 0.000 claims abstract description 135
- 238000001514 detection method Methods 0.000 claims abstract description 70
- 238000012360 testing method Methods 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 27
- 230000033001 locomotion Effects 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 19
- 239000013307 optical fiber Substances 0.000 claims description 14
- 230000008054 signal transmission Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 239000003595 mist Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005507 spraying Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The utility model belongs to the technical field of nozzle atomization angle detection and specifically relates to a fuel nozzle atomization angle automatic measuring mechanism and automatic measuring method are related to, fuel nozzle atomization angle automatic measuring mechanism is including the test installation panel that is used for installing the nozzle and install be used for carrying out measuring device to nozzle atomization angle on the test installation panel, measuring device is provided with two sets ofly, and is two sets of measuring device is located respectively the both sides that the nozzle is relative, measuring device includes sliding connection and is in probe and drive on the test installation panel the probe court the nozzle is close to or the drive arrangement who keeps away from, drive arrangement is configured as can there is oil to drip on the probe and stops when dropping. This application has when detecting nozzle atomizing angle, can increase measurement accuracy, improves the effect of testing result uniformity.
Description
Technical Field
The application relates to the field of nozzle atomization angle detection, in particular to an automatic fuel nozzle atomization angle measuring mechanism and an automatic fuel nozzle atomization angle measuring method.
Background
The nozzle is used as a key part of an engine, and the performance of the nozzle is directly related to the combustion efficiency and the running stability of the engine. The spray atomization angle is one of important indexes of the performance of the nozzle, the atomization angle of the nozzle is an angle formed by the atomization effect sprayed by the nozzle, the atomization effect can be visually obtained by obtaining the spray angle, and therefore whether the current atomization effect of the nozzle reaches the standard or not can be determined.
At present, the method for detecting the atomization angle of the fuel nozzle includes that probes are arranged on two sides of a spray, the probes are moved by a manual knob to be close to the center of the spray cone from one side of the spray cone, the positions of the probes are observed by human eyes, the probes are stopped and moved instantly after oil drops are formed on the probes, the probes are located on the edge of the spray cone at the moment, and the atomization angle of the nozzle can be obtained by operating the probes on two sides of the spray to stop on two sides of the spray cone.
However, during detection, because the whole process is manual measurement, the moving speed of the probe is inconsistent in each measurement process, and the reaction time from the instant when oil drops drop to the instant when the probe stops moving is different for each measurer. Therefore, the measurement accuracy is low, and the consistency of the measurement result is poor.
Disclosure of Invention
In order to increase the measurement accuracy, the consistency of the detection results is improved.
First aspect, the application provides a fuel nozzle atomizing angle automatic measuring mechanism, adopts following technical scheme:
the utility model provides a fuel nozzle atomization angle automatic measuring mechanism, is including the test installation panel that is used for installing the nozzle and install be used for carrying out measuring device to nozzle atomization angle on the test installation panel, measuring device is provided with two sets ofly, and is two sets of measuring device is located respectively the both sides that the nozzle is relative, measuring device includes sliding connection and is in probe and drive on the test installation panel the probe court the nozzle is close to or the drive arrangement who keeps away from, drive arrangement is configured to can there is oil to drip to stop when dripping on the probe.
Through adopting above-mentioned technical scheme, when needs examine the atomizing angle of nozzle, direct drive probe is close to the nozzle place orientation through drive arrangement, and when the probe reachd spray mist awl department, the spraying will be at probe tip condensation one-tenth oil droplet and drip, and drive arrangement will automatic stop this moment. The moving speed of the driving device can be consistent when the driving device detects each time, and the driving device automatically stops at the moment when oil drops drop, so that the measuring precision is greatly improved, and the consistency of detection results is improved.
Optionally, a detection module used for detecting whether oil drops form on the probe and the oil drops is arranged on the probe, and the detection module is connected with the driving device through a controller so as to control the starting and stopping of the driving device through a detection result of the detection module.
Through adopting above-mentioned technical scheme, when the spraying condenses into oil and drips on the probe, detection module can detect out oil and drip to with detected signal transmission to controller, will output stop signal after the controller receives detected signal, stop after drive arrangement receives stop signal, realized when having oil to drip formation and drip on the probe, drive arrangement can the automatic shutdown.
Optionally, the rigid coupling has the detection support that is used for installing detection module on the probe, detection module is including installing signal transmission end on the detection support and installing be used for receiving on the detection support signal transmission end sends the signal receiving terminal of signal, signal transmission end with signal receiving terminal is located respectively the both sides of probe and the horizontal plane at its place are located the below of probe place horizontal plane, work as when forming oil on the probe and dripping, the oil that drips will be through the signal transmission route of transmitting to signal receiving terminal from signal transmission end.
Through adopting above-mentioned technical scheme, under the normality, the signal of signal transmission end transmission can directly supply the signal receiving terminal to receive, and when the probe reachd spray mist awl department, the spraying will condense into oil droplet and drip on the probe, when oil droplet drips when will pass through the signal transmission route that signal transmission end transmitted to signal receiving terminal, detection module can detect that there is oil droplet to drip, and the controller will control drive arrangement autostop.
Optionally, the detection module is a correlation type optical fiber sensor.
Through adopting above-mentioned technical scheme, optical fiber sensor transmission be optical signal, also have explosion-proof effect, and the product is current product, can directly purchase, and the cost is lower.
Optionally, the driving device is a linear motor.
By adopting the technical scheme, the probe can be driven to approach or leave from the direction of the nozzle through the linear motor.
Optionally, a linear detection device for detecting the movement amount of the probe is mounted on the test mounting panel.
By adopting the technical scheme, the movement amount of the probe can be detected through the straight line detection decoration, so that the atomization angle of the nozzle can be calculated.
Optionally, the linear detection device is a linear displacement sensor, and a sliding sheet of the linear displacement sensor is fixedly connected with a sliding block of the linear motor.
By adopting the technical scheme, when the slide block of the linear motor drives the probe to move, the linear position sensor detects the movement amount of the probe, so that the automatic detection of the movement amount of the probe is realized.
Optionally, a protective shell is installed on the test installation panel, the protective shell is sleeved on the driving device and the linear detection device, and positive pressure gas is filled in the protective shell.
By adopting the technical scheme, the device can protect the electric elements such as the driving device and the linear detection device, and reduces the probability of explosion caused by the contact of combustible spray generated by the nozzle and the electric elements in the test process.
Optionally, the last rigid coupling of test installation panel has the support that supports the probe, the support is followed probe length direction interval is provided with a plurality ofly, the probe with support sliding fit.
Through adopting above-mentioned technical scheme, the support can play the effect of support to the probe, avoids probe tip flagging and influence normal measurement work under its self gravity influence.
In a second aspect, the application provides a method for automatically measuring an atomization angle of a fuel nozzle, which adopts the following technical scheme:
a method for automatically measuring the atomization angle of a fuel nozzle comprises the following steps:
step 1: controlling a slide block of a linear motor on a measuring device to drive a probe to move towards the direction of a nozzle at a constant speed;
step 2: when the probe moves to the spray cone, the spray is condensed into oil drops on the probe and drops, and the optical fiber sensor detects the dropped oil drops and outputs a detection signal;
and step 3: the controller receives the detection signal and then controls the linear motor to stop working, the moving information of the upper sliding block of the linear motor is recorded, and the distance S1 between the end part of the probe and the central axis of the nozzle is calculated in the controller;
and 4, step 4: repeating the step 1-the step 3, operating a probe on another measuring device to reach the spray cone, recording the movement information of a sliding block on the linear motor, and calculating the distance S2 from the end part of the probe to the central axis of the nozzle in the controller;
and 5: and according to the S1 and the S2, calculating the atomization angle of the nozzle through a preset formula, and comparing the atomization angle with the preset angle to judge whether the nozzle is qualified.
By adopting the technical scheme, when the atomization angle of the nozzle is required to be measured, the nozzle is directly installed at a fixed position, then the linear motor is started, and whether the atomization angle of the nozzle is qualified or not can be directly obtained, so that accurate judgment is realized. Compared with manual measurement, the method has the advantages that the measurement precision is greatly increased, the consistency of detection results is improved, the labor cost is greatly reduced, and the measurement efficiency is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
the probe is driven by the driving device, and the driving device is configured to be capable of automatically stopping after oil drops are formed on the probe and when the oil drops drop, so that the probe can be driven to move at a fixed speed when moving towards the direction of the nozzle, the moving speed is more uniform, the probe can be automatically stopped when the oil drops drop, the reaction time is fast and accurate, the measurement precision is greatly increased, and the consistency of the detection result is improved;
the arrangement of the linear detection device can realize automatic detection on the movement amount of the probe driven by the linear motor, so that the atomization angle of the nozzle is obtained;
the protective shell can protect the driving device and the linear detection device, so that electric elements such as the driving device and the linear detection device are isolated from the spray, and the probability of explosion caused by contact of the combustible spray and the electric elements is reduced; and optical fiber sensor's the signal emission end transmission of optical fiber sensor is optical signal, so also have explosion-proof function for whole equipment security performance is higher.
Drawings
Fig. 1 is a schematic view of the overall structure of the present application.
Fig. 2 is a schematic structural view of the test mounting panel and the protective case omitted to show the structure of the measuring apparatus.
FIG. 3 is a schematic view of the nozzle for showing the atomization angle.
FIG. 4 is a schematic front cross-sectional view of a measurement device of the present application.
Description of reference numerals: 1. testing the installation panel; 11. avoiding holes; 2. a measuring device; 21. a probe; 22. a drive device; 23. detecting the bracket; 24. a detection module; 241. a signal transmitting terminal; 242. a signal receiving end; 25. a line detection device; 26. a support; 261. a linear bearing; 27. a protective shell; 271. an upper protective shell; 272. a lower protective shell; 3. a connecting plate; 4. and (4) a nozzle.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses fuel nozzle atomizing angle automatic measuring mechanism. Referring to fig. 1, an automatic fuel nozzle atomization angle measuring mechanism includes a test mounting panel 1 for mounting a nozzle 4 and a measuring device 2 mounted on the test mounting panel 1 for measuring an atomization angle of the nozzle 4. Wherein, measuring device 2 is provided with two sets ofly, and two sets ofly measuring device 2 are located the relative both sides of nozzle 4 respectively.
Referring to fig. 1 and 2, the measuring device 2 includes a probe 21 slidably connected to the test mounting panel 1 and a driving device 22 for moving the probe 21 toward the nozzle 4 or away from the nozzle 4. Wherein, the driving device 22 can be a linear motor, a rodless cylinder, an air cylinder, or other devices capable of directly outputting linear power; a motor that outputs rotational motion may be selected, and the rotational motion of the motor is converted into linear motion that drives the probe 21 to approach or separate from the nozzle 4 in a manner of a gear, a rack, or the like, as long as the probe 21 can be driven to perform linear motion. In this application, use drive arrangement 22 to select for use linear electric motor as the example to explain, the linear electric motor rigid coupling is on test installation panel 1, probe 21 can direct rigid coupling on linear electric motor's slider, also can be through the indirect rigid coupling of intermediate junction spare on linear electric motor's slider, in this application, the rigid coupling has connecting plate 3 between linear electric motor's slider and probe 21, probe 21 passes through connecting plate 3 rigid coupling on linear electric motor's slider, thereby drive probe 21 through linear electric motor and move to the direction that is close to nozzle 4 or keeps away from nozzle 4 place.
Meanwhile, the measuring device 2 further includes a PLC controller, the driving device 22 is configured to stop when oil drops drop at the end of the probe 21, specifically, the probe 21 is fixedly connected with a detection support 23, the detection support 23 is located at one end of the probe 21 close to the nozzle 4, a detection module 24 for detecting whether oil drops drop from the probe 21 is installed on the detection support 23, the detection module 24 is connected with the driving device 22 through a PLC processor, when the detection module 24 detects that oil drops drop on the probe 21, the detection module 24 outputs a detection signal, the PLC processor receives the detection signal and outputs a stop signal, the driving device 22 receives the stop signal and stops moving, so that when the end of the probe 21 reaches the mist cone, the mist condenses on the probe 21 into oil drops, the probe 21 automatically stops, and the detection is more accurate.
In this application, the detection module 24 can select a correlation type optical fiber sensor, which includes a signal transmitting end 241 fixedly connected to the detection support 23 and a signal receiving end 242 fixedly connected to the detection support 23 and used for receiving a signal transmitted by the signal transmitting end 241, the signal transmitting end 241 and the signal receiving end 242 are respectively located at two sides of the probe 21, the signal transmitting end 241 and the signal receiving end 242 are located on the same horizontal plane, the horizontal plane is located below the horizontal plane where the probe 21 is located, and a signal transmitted from the signal transmitting end 241 to the signal receiving end 242 is located right below the end of the probe 21. When driving probe 21 through drive arrangement 22 and moving to nozzle 4 place direction, when the one end that probe 21 is close to nozzle 4 contacts with the fog cone of spraying, the spraying will be condensed into oil droplet and drip at the tip of probe 21, and when the oil droplet drips, the oil droplet will be through on signal transmission path that signal emission end 241 launches to signal receiving end 242 for optical fiber sensor can directly detect out there is the oil droplet to drip, realizes the automated inspection to probe 21 shift position. Wherein, because the signal emission end 241 transmission of optical fiber sensor is optical signal, so optical fiber sensor's chooseing for use is compared and is passed through the signal of telecommunication and detect, and it has explosion-proof effect, can this measuring mechanism's of greatly increased security performance.
Referring to fig. 1 and 2, in order to detect the moving distance of the probe 21, a linear detection device 25 capable of detecting the moving amount of the probe 21 is further fixedly connected to the test mounting panel 1, the linear detection device 25 may be a linear displacement sensor, a sliding piece of the linear displacement sensor may be fixedly connected to the probe 21, or may be fixedly connected to other components that can move synchronously with the probe 21, such as a sliding block of a linear motor, and the present application will be described by taking the example that the sliding piece of the linear displacement sensor is fixedly connected to the sliding block of the linear motor. When the slide block of the linear motor drives the probe 21 to move towards the direction of the nozzle 4, the linear displacement sensor detects the movement amount of the slide block on the linear motor, so that the movement amount of the probe 21 is obtained.
Wherein, linear displacement sensor also is connected with the PLC treater, can be with data transmission to the PLC treater that detects behind the amount of movement of probe 21, the PLC treater can be directly judged whether qualified to the atomizing angle of nozzle 4 after receiving the numerical value that linear displacement sensor detected.
Specifically, referring to fig. 3, a preset distance, a preset height, a preset angle and a calculation formula are stored in the PLC processor, wherein the preset distance is a horizontally farthest distance between one end of the probe 21 close to the nozzle 4 and the nozzle 4, that is, when the slider of the linear motor slides to an extreme position away from the nozzle, a distance between one end of the probe 21 close to the nozzle 4 and the nozzle 4; the preset height is the vertical distance H between the spray point of the nozzle 4 and the axis of the probe 21, and the preset angle is the minimum angle required to be met by the atomization angle of the nozzle 4.
When the linear displacement sensor detects the movement amount of the two probes 21, the detected value is transmitted to the PLC processor, and the PLC processor calculates the difference value between the preset distance and the movement amount of the probes 21 to obtain the distance S1 between the probes 21 and the central axis of the nozzle 4, wherein the nozzle 4 is a cylindrical nozzle, so the central axis of the nozzle 4 is the axis of the nozzle 4; the same method can also obtain the distance S2 between the other probe 21 and the central axis of the nozzle 4, and then the atomization angle α of the nozzle 4 can be calculated by a preset formula according to the known distance between the injection point of the nozzle 4 and the axis of the probe 21, i.e. the preset height H, wherein the specific preset formula is as follows:
α=α1+α2=arctan(S1/H)+arctan(S2/H)。
after the PLC processor calculates the atomization angle alpha of the nozzle 4, comparing the atomization angle alpha of the nozzle 4 with a preset angle, and if the atomization angle alpha is larger than or equal to the preset angle, judging that the nozzle 4 meets the standard; otherwise, the nozzle 4 is judged not to satisfy the standard. Automatic measurement is realized, and the measurement is more convenient and accurate.
Referring to fig. 2 and 4, in order to avoid the end of the probe 21 from being deflected by the influence of gravity when the probe 21 moves with the slider of the linear motor, the probe 21 is disposed to be inclined from the horizontal plane. Therefore, a bracket 26 for supporting the probe 21 is further provided on the test mounting panel 1, the bracket 26 can be directly fixed to the test mounting panel 1, and the probe 21 is slidably fitted to the bracket 26. One support 26 may be provided, or a plurality of supports may be provided at intervals along the length direction of the probe 21, and the present application will be described by taking two supports 26 as an example.
Meanwhile, in order to enable the probe 21 to smoothly slide on the bracket 26, a linear bearing 261 is further arranged between the probe 21 and the bracket 26, and the arrangement of the linear bearing 261 enables rolling friction between the probe 21 and the bracket 26, so that the friction force between the probe 21 and the bracket 26 is greatly reduced, and the probe 21 can smoothly slide.
Wherein, linear electric motor and probe 21 can set up the one side at test installation panel 1, also can set up the both sides at test installation panel 1 respectively, concrete can install according to actual need, in this application, linear electric motor and probe 21 are located the both sides of test installation panel 1 respectively, consequently, need set up on test installation panel 1 and supply the gliding hole of dodging 11 of connecting plate 3, when linear electric motor drives probe 21 and removes to the direction of being close to or keeping away from nozzle 4, connecting plate 3 will also slide in the hole of dodging 11, guarantee normal measurement work.
Because the spraying of nozzle 4 is combustible spray in the measurement process, produce the electric spark easily when the spraying contacts with electric spare parts such as linear electric motor, even lead to the explosion, consequently still the rigid coupling has the protective housing 27 that is used for carrying out isolation protection to drive arrangement 22 and straight line detection device 25 on test installation panel 1, and the intussuseption is filled with the malleation gas in protective housing 27, can avoid external spraying to get into. In order to ensure the sealing performance of the protective shell 27 and avoid the overflow of the positive pressure gas from the avoiding hole 11, the protective shell 27 includes an upper protective shell 271 sleeved on the driving device 22 and the linear detection device 25 and a lower protective shell 272 sleeved on one end of the probe 21 away from the nozzle 4, the connecting plate 3 and the avoiding hole 11 are both located in the protective shell 27, and one end of the probe 21 close to the nozzle 4 penetrates out of the lower protective shell 272 and is exposed to the outside, so as to detect the atomization angle of the nozzle 4.
The implementation principle of the automatic fuel nozzle atomization angle measuring mechanism in the embodiment of the application is as follows: during measurement, the nozzle 4 to be measured is directly installed at a specified installation position, then the linear motor is started, the slide block of the linear motor drives the probe 21 to move towards the direction of the nozzle 4 until the spray cone is reached, and the spray is condensed into oil drops on the probe 21 and drops. When the liquid drops, the PLC controls the linear motor to stop, and the end part of the probe 21 is located at the edge of the spray cone, so that the atomization angle of the nozzle 4 is measured. Because the moving speed of the probe 21 is consistent in the measuring process, the probe 21 can be stopped quickly when oil drops drop, the measuring precision is greatly improved, and the consistency of the detection result is improved.
The embodiment of the application also discloses an automatic measurement method of the atomization angle of the fuel nozzle. A method for automatically measuring the atomization angle of a fuel nozzle comprises the following steps:
step 1: starting a driving device, controlling a slide block of a linear motor on the measuring device 2 to drive the probe 21 to move towards the direction of the nozzle 4 at a constant speed.
Step 2: when the probe 21 moves to the spray cone, the spray condenses into oil drops on the probe 21 and drops, and the dropped oil drops are transmitted to the signal transmission path of the signal receiving end 242 through the signal transmitting end 241, so that the oil drops can be detected by the optical fiber sensor, and the optical fiber sensor outputs a detection signal.
And step 3: the PLC controller outputs a stop signal after receiving a detection signal of the optical fiber sensor, the linear motor stops working after receiving the stop signal, the movement information of the sliding block on the linear motor is recorded, and the distance S1 between the probe 21 and the central axis of the nozzle 4 is calculated according to the difference between the preset distance and the movement information of the sliding block.
And 4, step 4: and (3) repeating the steps 1-3, operating the probe 21 on the other measuring device 2 to reach the spray cone, recording the movement information of the sliding block on the linear motor, and calculating the distance S2 between the probe 21 and the central axis of the nozzle 4 according to the difference between the preset distance and the movement information of the sliding block.
And 5: and calculating the atomization angle of the nozzle 4 through a preset formula according to S1 and S2, and comparing the calculated atomization angle of the nozzle 4 with the preset angle to judge whether the nozzle 4 is qualified.
The implementation principle of the automatic measurement method for the fuel nozzle atomization angle in the embodiment of the application is as follows: install at fixed mounted position through the nozzle 4 that will need the measurement to start linear electric motor, can realize the detection to nozzle 4 automatically, and directly obtain final result, the operation is very convenient accurate, has improved detection efficiency greatly.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a fuel nozzle atomizing angle automatic measuring mechanism which characterized in that: including test mounting panel (1) that is used for installing nozzle (4) and installing be used for carrying out measuring device (2) to nozzle (4) atomizing angle on test mounting panel (1), measuring device (2) are provided with two sets ofly, and are two sets of measuring device (2) are located respectively nozzle (4) relative both sides, measuring device (2) include sliding connection be in probe (21) and the drive on test mounting panel (1) probe (21) court nozzle (4) are close to or drive arrangement (22) of keeping away from, drive arrangement (22) are configured to can stop when having oil to drip on probe (21).
2. The automatic fuel nozzle atomization angle measuring mechanism according to claim 1, characterized in that: whether be provided with on probe (21) and be used for detecting probe (21) have oil droplet to drip detection module (24), detection module (24) through the controller with drive arrangement (22) are connected with the control of passing through detection module's (24) detection result drive arrangement (22) stop.
3. The automatic fuel nozzle atomization angle measuring mechanism according to claim 2, characterized in that: the rigid coupling has detection support (23) that is used for installing detection module (24) on probe (21), detection module (24) is including installing signal emission end (241) on detection support (23) and installing be used for receiving on detection support (23) signal emission end (241) the signal reception end (242) of signal transmission, signal emission end (241) with signal reception end (242) are located respectively the both sides of probe (21) and the horizontal plane at its place are located the below of probe (21) place horizontal plane, work as when form the oil droplet on probe (21) and drip, the oil droplet that drips will be through the signal transmission route that signal emission end (241) launches to signal reception end (242).
4. The automatic fuel nozzle atomization angle measuring mechanism according to claim 2, characterized in that: the detection module (24) is a correlation type optical fiber sensor.
5. The automatic fuel nozzle atomization angle measuring mechanism according to claim 1, characterized in that: the driving device (22) is a linear motor.
6. The automatic fuel nozzle atomization angle measuring mechanism according to claim 5, characterized in that: a linear detection device (25) for detecting the movement amount of the probe (21) is mounted on the test mounting panel (1).
7. The automatic fuel nozzle atomization angle measuring mechanism according to claim 6, characterized in that: the linear detection device (25) is a linear displacement sensor, and a sliding sheet of the linear displacement sensor is fixedly connected with a sliding block of the linear motor.
8. The automatic fuel nozzle atomization angle measuring mechanism according to claim 6, characterized in that: install protective housing (27) on test installation panel (1), protective housing (27) cover is established drive arrangement (22) with on sharp detection device (25), protective housing (27) intussuseption is filled with the malleation gas.
9. The automatic fuel nozzle atomization angle measuring mechanism according to claim 1, characterized in that: the fixed connection has support (26) that support probe (21) on test mounting panel (1), support (26) are followed probe (21) length direction interval is provided with a plurality ofly, probe (21) with support (26) sliding fit.
10. A method for automatically measuring the atomization angle of a fuel nozzle is characterized by comprising the following steps:
step 1: controlling a slide block of a linear motor on one measuring device (2) to drive a probe (21) to move towards the direction of the nozzle (4) at a constant speed;
step 2: when the probe (21) moves to the spray cone, the spray is condensed into oil drops on the probe (21) and drops, and the optical fiber sensor detects the dropped oil drops and outputs a detection signal;
and step 3: the controller receives the detection signal and then controls the linear motor to stop working, the moving information of the upper sliding block of the linear motor is recorded, and the distance S1 between the end part of the probe (21) and the central axis of the nozzle (4) is calculated in the controller;
and 4, step 4: repeating the steps 1-3, operating a probe (21) on another measuring device (2) to reach a spray mist cone, recording the movement information of a sliding block on the linear motor, and calculating the distance S2 between the end part of the probe (21) and the central axis of the nozzle (4) in the controller;
and 5: and according to the S1 and the S2, calculating the atomization angle of the nozzle (4) through a preset formula, and comparing the atomization angle with the preset angle to judge whether the nozzle (4) is qualified.
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| CN202110983437.1A CN113720277B (en) | 2021-08-25 | 2021-08-25 | Automatic measurement mechanism and automatic measurement method for fuel nozzle atomization angle |
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