Atomization height adjusting device for fuel nozzle
By designing a fuel nozzle atomization height adjustment device, the combination of sliders and cam bearings can achieve accurate adjustment of nozzle height, solving the problem of changing the tooling for detection height in the prior art, and improving the accuracy of measurement and the versatility of the equipment.
Patent Information
- Application Number
- CN202421184698.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In the prior art, when detecting the atomization angle of fuel nozzles, it is necessary to replace the nozzle installation tool to change the detection height, which is time-consuming and labor-intensive and has poor equipment versatility.
A fuel nozzle atomization height adjustment device is designed. Through the combination of the mounting plate, the nozzle height adjustment mechanism and the nozzle, the slider and the cam bearing are used to achieve accurate height adjustment of the nozzle in the vertical direction.
It realizes accurate adjustment of nozzle height, facilitates measurement of atomization angle at different heights, reduces the time and energy of manual operation, and improves the universality of the equipment and the accuracy of measurement.
Smart Images
Figure CN222576780U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fuel nozzle atomization height adjustment, in particular to a fuel nozzle atomization height adjustment device. Background Art
[0002] The atomization height adjustment of the fuel nozzle is an important technology, which involves how to adjust the nozzle to ensure that the fuel forms a suitable atomization particle size and injection angle during the injection process, so as to achieve uniform mixing and effective combustion of the fuel in the combustion chamber. The measurement accuracy of the atomization angle of the nozzle directly determines whether the performance of the nozzle meets the requirements, which is related to the performance of the engine. According to the test requirements, it is sometimes necessary to detect the atomization angle at different heights of the nozzle outlet.
[0003] In the prior art, when detecting the atomization angle of a fuel nozzle, probes are arranged on both sides of a fixed height of the nozzle outlet to detect the atomization angle at the fixed height of the nozzle outlet. If the detection height is to be changed, it can only be achieved by replacing the nozzle installation tooling, which is time-consuming and labor-intensive, and also results in poor versatility of the equipment. Utility Model Content
[0004] The utility model aims to provide a fuel nozzle atomization height adjustment device, which can accurately adjust the height of the nozzle when measuring the nozzle atomization angle.
[0005] The utility model is realized through the following technical scheme: a fuel nozzle atomization height adjustment device comprises a mounting plate, a nozzle height adjustment mechanism and a nozzle, the mounting plate is slidably connected with a mounting edge, a measuring mechanism and a plurality of guide rods are fixedly mounted on the mounting plate, a nozzle is arranged on the mounting edge, the mounting edge is fixedly connected with the first ends of two cam bearings, the nozzle height adjustment mechanism comprises a first guide rail, the first guide rail is fixedly mounted on the mounting plate, a slider is slidably connected with the first guide rail, an inclined stepped slide groove is arranged on the slider, the second end of the cam bearing is slidably connected with the slide groove, the slide groove is driven by the slide of the slider on the first guide rail to slide the cam bearing and the mounting edge on the mounting plate in the vertical direction, thereby realizing the adjustment of the nozzle to any height within the adjustable range, thereby changing the atomization height of the nozzle, and facilitating measurement.
[0006] In order to better realize the utility model, further, a plurality of linear bearings are fixedly connected to the mounting edge, and each linear bearing is slidably connected to a guide rod.
[0007] In order to better realize the utility model, further, a servo motor driver and a PLC controller are arranged on the mounting plate, the PLC controller sends a command signal to the servo motor driver, and the servo motor driver controls the start and stop of the servo reduction motor.
[0008] In order to better realize the utility model, further, the slider is fixedly connected with a first connecting shaft, the first connecting shaft is rotatably connected with a connecting rod, and two groups of first connecting shafts and sliders are provided on the connecting rod and are located on both sides of the installation edge.
[0009] In order to better realize the utility model, further, an absolute encoder and a servo reduction motor are fixedly connected to the mounting plate, a gear is provided at the output end of the servo reduction motor, a rack is slidably connected to the mounting plate, a second connecting shaft is fixedly connected to the rack, and a connecting rod is rotatably connected to the second connecting shaft.
[0010] In order to better realize the utility model, further, a second guide rail is fixedly installed on the mounting plate, and the rack and the connecting rod slide on the second guide rail.
[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0012] 1. The utility model provides a mounting edge and a cam bearing, and utilizes the precise lifting of the mounting edge on the guide rod through the linear bearing to drive the nozzle installed on the mounting edge to perform precise height adjustment, thereby facilitating the measurement of the atomization angle of the nozzle at different heights.
[0013] 2. The utility model provides a slide block and utilizes the stepped slide groove on the slide block to drive the cam bearing to slide on the slide groove, thereby actively lifting the nozzle, avoiding manual repeated operations that are time-consuming and labor-intensive. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 A schematic diagram of measuring the atomization angle of a nozzle in the prior art;
[0016] Figure 3 It is a schematic diagram of measuring the atomization angle of the nozzle of the utility model;
[0017] Figure 4 It is a structural schematic diagram of the installation edge of the utility model;
[0018] Figure 5 This is a structural schematic diagram of a stepped slideway on a slider of the utility model;
[0019] Among them, 1-mounting plate; 2-measuring mechanism; 3-guide rod; 4-mounting edge; 5-nozzle height adjustment mechanism; 6-nozzle; 21-probe; 41-linear bearing; 42-cam bearing; 51-first guide rail; 52-slider; 53-first connecting shaft; 54-connecting rod; 55-absolute encoder; 56-servo reduction motor; 57-rack; 58-second connecting shaft; 59-second guide rail; 510-protective shell. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Embodiment 1:
[0022] As shown in the figure from the mounting plate 1 to the nozzle height adjustment mechanism 5, a fuel nozzle atomization height adjustment device comprises a mounting plate 1, a nozzle height adjustment mechanism 5 and a nozzle 6, wherein the mounting plate 1 is slidably connected with a mounting edge 4, a measuring mechanism 2 and a plurality of guide rods 3 are fixedly mounted on the mounting plate 1, a nozzle 6 is arranged on the mounting edge 4, and the first ends of two cam bearings 42 are fixedly connected to the mounting edge 4, and the nozzle height adjustment mechanism 5 comprises a first guide rail 51, the first guide rail 51 is fixedly mounted on the mounting plate 1, a slider 52 is slidably connected to the first guide rail 51, an inclined stepped slide groove is arranged on the slider 52, and the second end of the cam bearing 42 is slidably connected to the slide groove, and the slider 52 slides on the first guide rail 51, and the slide groove on the slider 52 is used to drive the cam bearing 42 and the mounting edge 4 to slide in the vertical direction on the mounting plate 1, so as to adjust the nozzle 6 to any height within the adjustable range, thereby changing the atomization height of the nozzle 6 and facilitating measurement.
[0023] A plurality of linear bearings 41 are fixedly connected to the mounting edge 4 , and each linear bearing 41 is slidably connected to a guide rod 3 .
[0024] When in use, the slider 52 is controlled to slide on the first guide rail 51, so that the stepped groove on the slider 52 cooperates with the second end of the cam bearing 42, so that the second end of the cam bearing 42 slides on the groove of the slider 52, thereby driving the cam bearing 42 to rise, and then driving the mounting edge 4 and the linear bearing 41 to slide on the guide rod 3, that is, the mounting edge 4 slides in the vertical direction, and drives the nozzle 6 installed on the mounting edge 4, so as to adjust the height of the nozzle 6, thereby facilitating the measurement of the atomization angle of the nozzle 6 at different heights.
[0025] Embodiment 2:
[0026] As shown in the mounting side 4 , a servo motor driver and a PLC controller are provided on the mounting plate 1 . The PLC controller sends a command signal to the servo motor driver, and the servo motor driver controls the start and stop of the servo reduction motor 56 .
[0027] The slider 52 is fixedly connected with a first connecting shaft 53 , and the first connecting shaft 53 is rotatably connected with a connecting rod 54 . The connecting rod 54 is provided with two sets of first connecting shafts 53 and sliders 52 and is located at both sides of the mounting edge 4 .
[0028] The mounting plate 1 is fixedly connected with an absolute encoder 55 and a servo reduction motor 56, the output end of the servo reduction motor 56 is provided with a gear, a rack 57 is slidably connected with the mounting plate 1, a second connecting shaft 58 is fixedly connected with the rack 57, and a connecting rod 54 is rotatably connected with the second connecting shaft 58. The absolute encoder 55 is used to detect the motor speed and position in real time, and the servo motor driver is used to control the movement of the motor.
[0029] The second guide rail 59 is fixedly mounted on the mounting plate 1 , and the rack 57 and the connecting rod 54 slide on the second guide rail 59 .
[0030] A protective shell 510 is fixedly installed on the mounting plate 1. The protective shell 510 is arranged on the nozzle height adjustment mechanism 5. The protective shell 510 is filled with positive pressure gas, which protects the electrical components in the nozzle height adjustment mechanism 5 and reduces the probability of explosion caused by the combustible spray generated when the nozzle 6 is atomized during the test and contacting the electrical components.
[0031] During operation, since the horizontal and vertical distances of the slide are certain, each horizontal position corresponds to a height value, and this relationship is linear, the entire movement process is calibrated, and the positions of the starting and ending points of the motor are recorded, and the angle of motor rotation can be converted into the vertical height value.
[0032] When in use, the height value to be adjusted is input into the PLC controller, and the PLC controller sends a signal to the servo motor driver to control the movement of the servo reduction motor 56. The absolute encoder 55 feeds back the motor angle value in real time. When the servo reduction motor 56 turns to the corresponding angle value, the controller receives the signal from the absolute encoder 55 and sends a signal to the servo motor driver to control the servo reduction motor 56 to stop, so that the required height value can be obtained.
[0033] The absolute value encoder 55 can send thousands of pulse signals per second, and the signal transmission time is extremely short, so the accuracy of the nozzle height adjustment mechanism 5 can be guaranteed.
[0034] like Figure 5As shown, the PLC controller stores the horizontal distance L, the height difference H1 of the chute, the pitch circle diameter D of the gear, the rotation angle δ of the servo reduction motor 56 and the calculation formula. The final height value of the nozzle 6 is H, and the initial height value is Hc. The calculation formula for the height of the nozzle 6 to be adjusted is: ΔH=H-Hc, ΔH is the height value of the nozzle 6 to be adjusted, which is related to the rotation angle of the servo reduction motor 56. According to the groove type of the chute 52, tanθ=H1 / L=ΔH / x, x is the horizontal distance of the movement of the chute 52, and since the connecting mechanism is rigid, the movement distance of the rack 57 is also x. The distance acts on the gear, and the corresponding gear rotation angle is 360x / πD, that is, the rotation angle of the servo reduction motor 56 is δ=360x / πD=360ΔHL / πDH1.
[0035] When the PLC controller receives an instruction to measure the atomization angle at a distance H from the nozzle 6 outlet, it calculates according to the rotation angle formula δ=360x / πD=360ΔHL / πDH1 of the servo reduction motor 56 to obtain the angle value that needs to be adjusted. The PLC controller sends a signal to the servo motor driver, and the servo motor driver controls the rotation of the gears on the servo reduction motor 56 (forward rotation when the angle is positive, and reverse rotation when the angle is negative). At this time, the absolute encoder 55 detects the rotation angle of the gears on the servo reduction motor 56 in real time. When the angle reaches the target value, the absolute encoder 55 sends a signal to the PLC controller, and the PLC controller sends an instruction to the driver of the servo reduction motor to control the motor to stop moving.
[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.
Claims
1. A fuel nozzle atomization height adjustment device, comprising a mounting plate (1), a nozzle height adjustment mechanism (5) and a nozzle (6), characterized in that: The mounting plate (1) is slidably connected to a mounting edge (4), a measuring mechanism (2) and a plurality of guide rods (3) are fixedly mounted on the mounting plate (1), a nozzle (6) is arranged on the mounting edge (4), and first ends of two cam bearings (42) are fixedly connected to the mounting edge (4), and a nozzle height adjustment mechanism (5) comprises a first guide rail (51), the first guide rail (51) is fixedly mounted on the mounting plate (1), a slider (52) is slidably connected to the first guide rail (51), an inclined stepped slide groove is arranged on the slider (52), and a second end of the cam bearing (42) is slidably connected to the slide groove, the slider (52) slides on the first guide rail (51), and the slide groove on the slider (52) is used to drive the cam bearing (42) and the mounting edge (4) to slide in a vertical direction on the mounting plate (1), thereby achieving adjustment of the nozzle (6) to any height within an adjustable range, thereby changing the atomization height of the nozzle (6) and facilitating measurement.
2. A fuel nozzle atomization height adjustment device according to claim 1, characterized in that: A plurality of linear bearings (41) are fixedly connected to the mounting edge (4), and each linear bearing (41) is slidably connected to a guide rod (3).
3. A fuel nozzle atomization height adjustment device according to claim 1, characterized in that: A servo motor driver and a PLC controller are arranged on the mounting plate (1), and the PLC controller sends a command signal to the servo motor driver, and the servo motor driver controls the start and stop of the servo reduction motor (56).
4. A fuel nozzle atomization height adjustment device according to claim 1, characterized in that: The slider (52) is fixedly connected to a first connecting shaft (53), the first connecting shaft (53) is rotatably connected to a connecting rod (54), and the connecting rod (54) is provided with two sets of first connecting shafts (53) and sliders (52), and is located on both sides of the mounting edge (4).
5. A fuel nozzle atomization height adjustment device according to claim 1, characterized in that: An absolute value encoder (55) and a servo reduction motor (56) are fixedly connected to the mounting plate (1); a gear is provided at the output end of the servo reduction motor (56); a rack (57) is slidably connected to the mounting plate (1); a second connecting shaft (58) is fixedly connected to the rack (57); and a connecting rod (54) is rotatably connected to the second connecting shaft (58).
6. A fuel nozzle atomization height adjustment device according to claim 1, characterized in that: A second guide rail (59) is fixedly mounted on the mounting plate (1), and the rack (57) and the connecting rod (54) slide on the second guide rail (59).