CN111852711A - Experimental apparatus is surveyd in fuel sprayer atomizing - Google Patents
Experimental apparatus is surveyd in fuel sprayer atomizing Download PDFInfo
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- CN111852711A CN111852711A CN202010644428.5A CN202010644428A CN111852711A CN 111852711 A CN111852711 A CN 111852711A CN 202010644428 A CN202010644428 A CN 202010644428A CN 111852711 A CN111852711 A CN 111852711A
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- box body
- oil nozzle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/001—Measuring fuel delivery of a fuel injector
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses an oil nozzle atomization observation experiment device which comprises a box body, an oil nozzle supporting frame, an oil nozzle, a vacuum pump, a high-speed shooting device, an atomizing liquid pipe and a light supplementing mechanism, wherein a door with an observation window is arranged on a front panel of the box body; the high-speed shooting device is arranged right in front of the box body; the rear plate of the box body is provided with a vacuumizing port which is connected with an external vacuum pump through an air pipe; the oil nozzle support frame comprises a support, a support table and a fixing frame, wherein two ends of the support table are respectively fixedly connected with the support, and a through hole I is formed in the middle of the support table; the fixed frame is arranged on the bracket platform; the oil nozzle is vertically arranged on the bracket table, and the upper part of the oil nozzle is fixed by a fixing frame; one end of the spray liquid pipe is connected with the oil nozzle, and the other end of the spray liquid pipe penetrates out of the box body and is connected with the oil nozzle comprehensive flow meter; the light supplementing mechanism is arranged in the box body and supplements to provide light required by shooting. The invention has simple structure and convenient operation, can vacuumize the box body and research the oil beam atomization shape, the injection angle and the oil injection distance under the negative pressure condition without air resistance.
Description
Technical Field
The invention belongs to the technical field of fuel injector performance parameter measurement, and particularly relates to an experimental device for fuel injection nozzle atomization observation.
Background
In various industrial systems and the automobile industry, internal combustion engine oil injectors are common, oil injection nozzles are arranged on the oil injectors, and the oil injectors receive oil injection pulse signals in automobiles and can accurately control the fuel injection quantity. The oil injector is a precision device with very high processing precision. At present, the detection of the atomization shape, the injection angle and the injection distance of an oil beam injected by an oil injector always adopts manual observation and then detects the injection angle of the oil injector, and the detection is in a manual experience observation mode, so that the requirement of an engine on the increasingly improved injection accuracy of the oil injector is difficult to meet. In addition, no special equipment is available in the market at present for detecting the injection angle of the engine oil injector, detection is carried out in a manual experience observation mode, the error is large, and the precision is low.
Disclosure of Invention
The invention provides an atomization observation experiment device of an oil nozzle, which is an atomization experiment device of an automobile oil nozzle, has simple structure and convenient operation, can vacuumize the interior of a box body, study the oil beam shape, the injection angle and the oil injection distance of oil injection when no air resistance exists under the negative pressure condition, and clearly observe whether the oil injection of the oil nozzle is sharp at the beginning and the end or not, and has no abnormal phenomena of dripping, secondary injection and the like.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the oil nozzle atomization observation experiment device comprises a box body, an oil nozzle support frame, an oil nozzle, a vacuum pump, a high-speed shooting device, an atomizing liquid pipe and a light supplementing mechanism, wherein the box body is a rectangular box body, a door is arranged in the middle of a front panel of the box body, and a transparent observation window is arranged on the door; the high-speed shooting device is arranged right in front of the box body and is aligned to the observation window;
the vacuum pump is arranged below the box body, the right lower part of the rear plate of the box body is provided with a vacuumizing port, and the vacuumizing port is connected with the vacuum pump through an air pipe;
the oil nozzle support frame comprises two groups of supports, a support table and a fixing frame, wherein the two groups of supports are arranged in the middle of a bottom plate in the box body at intervals along the left and right directions of the box body; the two ends of the support stand are respectively fixedly connected with the inner side surface of the top end of the support stand, a through hole I is formed in the middle of the support stand, and the diameter of the through hole I is larger than that of the lower pipe section of the oil nozzle and smaller than that of the middle pipe section of the oil nozzle; the fixing frame is arranged on the bracket platform; the oil nozzle is vertically arranged on the support platform, the upper part of the oil nozzle is fixed by a fixing frame, the nozzle is vertically arranged downwards and extends into the position below the support platform through the through hole I; one end of the spray liquid pipe is connected with the oil nozzle, and the other end of the spray liquid pipe penetrates out of the box body and is connected with the oil nozzle comprehensive flow meter; the light supplementing mechanism is arranged in the box body and is used for supplementing light required by shooting.
The positions of the air pipe and the spray liquid pipe penetrating out of the box body are sealed by welding or by arranging a sealing flange.
Furthermore, the fixing frame comprises two screw rods, a pressing plate and nuts, the two screw rods are vertically arranged in the middle of the support platform at intervals and are positioned at two sides of the through hole I; the pressing plate is horizontally arranged on the screw rod, and the upper end surface and the lower end surface of the pressing plate are fixed through nuts; the middle part of clamp plate is equipped with through-hole II, the diameter of through-hole II be greater than the diameter of the last pipeline section of fuel sprayer, be less than the diameter of the well pipeline section of fuel sprayer, the last pipeline section of fuel sprayer stretches out on the clamp plate through-hole II.
Further, still include the gasket, the gasket locate the pallet, the middle part of gasket is equipped with through-hole III, the diameter of lower pipeline section be less than through-hole III's diameter, the diameter of well pipeline section be greater than through-hole III's diameter, lower pipeline section is stretched into under the pallet through-hole III, through-hole I in proper order.
Furthermore, the support comprises two backup pads and a panel, backup pad and panel all vertical setting, two backup pads respectively with the both sides limit fixed connection of panel, the panel of two sets of supports sets up relatively and is parallel to each other.
Further, still include the scale, the middle part fixed connection on upper end and the support frame rear side edge of scale, the vertical downwardly extending of scale. The scale is used for measuring the length of the spray of the oil nozzle, and the high-speed shooting device is used for shooting and recording in real time.
Furthermore, four corners of the bottom of the box body are provided with supporting legs.
Furthermore, the door comprises a door plate and a door frame, and a circle of sealing ring is arranged on the edge of the front end face of the door frame.
Furthermore, the observation window is arranged on the door panel, or the whole door panel is made of transparent materials.
Further, the high-speed shooting device include high-speed camera, cloud platform, telescopic link, tripod, the tripod locate the dead ahead of box, be located the central line of box, the telescopic link vertically locate on the tripod, the cloud platform locate the upper end of telescopic link, high-speed camera locate on the cloud platform, aim at the observation window.
And the oil spray nozzle is connected with the upper end of the spray supply pipe, the lower end of the oil spray nozzle extends vertically downwards and then horizontally bends backwards, and the oil spray nozzle penetrates out of the rear side face of the box body.
Further, the light supplementing mechanism comprises a lighting control switch, a vertical light bar and an annular light bar; the annular light bar is arranged in the middle of the top in the box body, and a light softening plate is arranged below the annular light bar; the vertical light bars are arranged at four corners of the inner side of the box body and extend from the bottom plate to the light softening plate; the lighting control switch is arranged on the front side face of the box body and used for controlling the opening and closing of the vertical light bar and the annular light bar.
The working process of the invention is as follows:
measuring the diameter of the oil injector by using a tool microscope, mounting an oil nozzle on a fixed frame, and connecting the oil nozzle integrated flow tester with external oil supply equipment through an oil supply spray pipe; adjusting the brightness in the box body through an illumination controller, closing the door plate, checking the air tightness and checking the air tightness of the vacuum device; adjusting the height and distance of the high-speed camera, and opening a vacuum pump to vacuumize the interior of the box body; setting fuel oil injection parameters and control parameters of a high-speed camera, starting an oil supply device, injecting an oil nozzle, and shooting by the high-speed camera; after a high-speed camera collects a spray image at a standard moment, image preprocessing including non-uniform correction, contrast enhancement and the like is performed, image binaryzation is realized by adopting a maximum inter-class variance method, a spray edge is determined, and finally automatic measurement of the numerical value of a GDI (graphics device interface) spray angle and a penetration distance is realized by utilizing image processing software.
The invention has the beneficial effects that:
according to the invention, the high-speed camera is adopted to shoot the oil spraying condition, the oil beam state and the oil spraying distance can be visually seen, the spraying angle can be directly measured, and the telescopic rod can adjust the position of the high-speed camera, so that the shooting effect is better;
According to the oil nozzle support, the oil nozzle is clamped by the gasket, and the corresponding gasket can be replaced according to the oil nozzles with different diameters, so that the compatibility of an experiment platform is improved;
the sealing ring is arranged on the door, so that the sealing effect can be improved; the door plate is provided with an observation window or is made of transparent materials, so that shooting can be smoothly carried out;
the light supplementing mechanism comprises the vertical light bar and the annular light bar, and the light bars are subjected to soft light treatment, so that the situation that an ideal effect cannot be achieved due to overexposure when a high-speed camera shoots is prevented; the lighting control switch can adjust the brightness of the lamp tube so as to meet the specific experimental requirements;
the invention is an atomization observation experiment device of an automobile oil nozzle, has simple structure and convenient operation, and solves the problems of large error and low precision of detection in the prior art by using a manual experience observation mode; the invention can vacuumize the interior of the box body, study the oil beam atomization shape, the injection angle and the oil injection distance of oil injection under the negative pressure condition without air resistance, and clearly observe whether the oil injection of the oil injection nozzle is sharp or not, and has no abnormal phenomena of dripping, secondary injection and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the case of the present invention;
FIG. 3 is a schematic top view of the case of the present invention;
FIG. 4 is a schematic illustration of the structure of the fuel injector support bracket of the present invention;
FIG. 5 is a schematic structural view of the fastening frame of the present invention;
FIG. 6 is a schematic view of the structure of the fuel injector of the present invention;
the numbers and names in the figure are as follows:
1-a box body; 2-an oil nozzle; 3-a door; 4-a scaffold; 5-a support table; 6-a vacuum pump; 7-a fixing frame; 8-screw rod; 9-pressing a plate; 10-a gasket; 11-a nut; 12-a scale; 13-a door panel; 14-a door frame; 15-sealing ring; 16-a high-speed camera; 17-a telescopic rod; 18-a tripod; 19-a spray supply pipe; 20-a lighting controller; 21-supporting feet; 22-a vacuum-pumping port; 23-a light softening plate; 24-trachea; 25-upper pipe section; 26-a middle tube section; 27-a lower pipe section; 28-cloud deck.
41-a support plate; 42-panel.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments in conjunction with the accompanying drawings.
Example 1
As shown in fig. 1-3, the experimental apparatus for observing atomization of an oil nozzle of the present invention includes a case 1, an oil nozzle support frame, an oil nozzle 2, a vacuum pump 6, a high-speed shooting device, an atomizing liquid pipe 19, and a light supplement mechanism, wherein the case 1 is a rectangular case, a door 3 is disposed in the middle of a front panel of the case 1, and a transparent observation window is disposed on the door 3; the high-speed shooting device is arranged right in front of the box body 1 and is aligned to the observation window;
The vacuum pump 6 is arranged below the box body 1, the right lower part of the rear plate of the box body 1 is provided with a vacuum-pumping port 22, and the vacuum-pumping port 22 is connected with the vacuum pump 6 through an air pipe 24;
the oil nozzle support frame comprises two groups of supports 4, a support table 5 and a fixing frame, wherein the two groups of supports 4 are arranged in the middle of a bottom plate in the box body 1 at intervals along the left and right directions of the box body 1; the two ends of the support stand 5 are respectively fixedly connected with the inner side surface of the top end of the support 4, a through hole I is formed in the middle of the support stand 5, and the diameter of the through hole I is larger than that of a lower pipe section 27 of the oil spray nozzle 2 and smaller than that of a middle pipe section 26 of the oil spray nozzle 2; the fixed frame 7 is arranged on the bracket table 5; the oil nozzle 2 is vertically arranged on the support stand 5, the upper part of the oil nozzle is fixed by a fixing frame 7, the nozzle is vertically arranged downwards and extends into the position below the support stand 5 through the through hole I; one end of the spray liquid pipe 19 is connected with the oil nozzle 2, and the other end penetrates out of the box body 1 and is connected with the oil nozzle comprehensive flow meter; the light supplementing mechanism is arranged in the box body 1 and provides illumination required by shooting.
The fixing frame 7 comprises two screw rods 8, a pressing plate 9 and a nut 11, wherein the two screw rods 8 are vertically arranged in the middle of the support platform 5 and are positioned at two sides of the through hole I; the horizontal screw rod 8 of locating of clamp plate 9 on, the upper and lower terminal surface of clamp plate 9 all fixes through nut 11, the middle part of clamp plate 9 is equipped with through-hole II, the diameter of through-hole II be greater than the diameter of the last pipe section 25 of fuel sprayer 2, be less than the diameter of well pipe section 26 of fuel sprayer 2, the last pipe section 25 of fuel sprayer 2 stretches out on the clamp plate 9 through-hole II.
Still include gasket 10, gasket 10 locate on the support platform 5, the middle part of gasket 10 is equipped with through-hole III, the diameter of lower pipe section 27 be less than through-hole III's diameter, well pipe section 26 the diameter be greater than through-hole III's diameter, lower pipe section 27 stretches into under the support platform 5 through-hole III, through-hole I in proper order.
The support 4 comprises two support plates 41 and a panel 42, the support plates 41 and the panel 42 are both vertically arranged, the two support plates 41 are respectively fixedly connected with two side edges of the panel 42, and the panels of the two groups of supports 4 are oppositely arranged and are parallel to each other.
Still include scale 12, the middle part fixed connection on the upper end of scale 12 and the rear side edge of support platform 5, the vertical downwardly extending of scale 8.
Four corners at the bottom of the box body 1 are provided with supporting feet 21.
The door 3 comprises a door plate 13 and a door frame 14, and a circle of sealing ring 15 is arranged on the edge of the front end face of the door frame 14.
The observation window is arranged on the door panel 13, or the whole door panel 13 is made of transparent material.
The high-speed shooting device comprises a high-speed camera 16, a tripod head 28, an expansion link 17 and a tripod 18, wherein the tripod 18 is arranged right in front of the box body 1 and is positioned on the central line of the box body 1, the expansion link 17 is vertically arranged on the tripod 18, the tripod head 28 is arranged at the upper end of the expansion link 17, and the high-speed camera 16 is arranged on the tripod head 28 and is aligned with the observation window.
The oil spray device is characterized by further comprising an oil spray supply pipe 19, the oil spray nozzle 2 is connected with the upper end of the oil spray supply pipe 19, the lower end of the oil spray supply pipe extends vertically downwards and then bends backwards and horizontally, and the oil spray supply pipe penetrates out of the rear side face of the box body 1.
The light supplementing mechanism comprises a lighting control switch 20, a vertical light bar and an annular light bar; the annular light bar is arranged in the middle of the top in the box body 1, and a light softening plate 23 is arranged below the annular light bar; the vertical light bars are arranged at four corners of the inner side of the box body 1 and extend from the bottom plate to the light softening plate 23; the lighting control switch 20 is arranged on the front side surface of the box body 1 and used for controlling the opening and closing of the vertical light bar and the annular light bar.
The working process of the invention is as follows:
measuring the diameter of the oil injector by using a tool microscope, mounting the oil injection nozzle 2 on a fixed frame, and connecting the oil injection nozzle with an oil injection nozzle comprehensive flow measuring instrument through an atomizing liquid supply pipe 19; adjusting the brightness in the box body 1 through the illumination controller 20, closing the door plate 13, checking the air tightness and checking the air tightness of the vacuum device; adjusting the height and distance of the high-speed camera 16, and opening the vacuum pump 9 to vacuumize the interior of the box body 1; setting fuel injection parameters and control parameters of the high-speed camera 16, starting the oil supply equipment, injecting the oil nozzle 2, and shooting by the high-speed camera 16; after a high-speed camera collects a spray image at a standard moment, image preprocessing including non-uniform correction, contrast enhancement and the like is performed, image binaryzation is realized by adopting a maximum inter-class variance method, a spray edge is determined, and finally automatic measurement of the numerical value of a GDI (graphics device interface) spray angle and a penetration distance is realized by utilizing image processing software.
Claims (10)
1. The utility model provides an experimental apparatus is surveyd in fuel sprayer atomizing, includes box (1), fuel sprayer support frame, fuel sprayer (2), vacuum pump (6), high-speed shooting device, spraying liquid pipe (19), light filling mechanism, its characterized in that:
the box body (1) is a rectangular box body, a door (3) is arranged in the middle of a front side plate of the box body (1), and a transparent observation window is arranged on the door (3); the high-speed shooting device is arranged right in front of the box body (1) and is aligned to the observation window;
the vacuum pump (6) is arranged below the box body (1), the right lower part of the rear side plate of the box body (1) is provided with a vacuumizing port (22), and the vacuumizing port (22) is connected with the vacuum pump (6) through an air pipe (24);
the oil nozzle support frame comprises two groups of supports (4), a support platform (5) and a fixing frame (7), wherein the two groups of supports (4) are arranged in the middle of a bottom plate in the box body (1) at intervals along the left and right direction of the box body (1); the two ends of the support stand (5) are respectively fixedly connected with the inner side surface of the top end of the support (4), a through hole I is formed in the middle of the support stand (5), and the diameter of the through hole I is larger than that of a lower pipe section (27) of the oil nozzle (2) and smaller than that of a middle pipe section (26) of the oil nozzle (2); the fixing frame (7) is arranged on the support table (5); the oil nozzle (2) is vertically arranged on the support stand (5), the upper part of the oil nozzle is fixed by a fixing frame (7), the nozzle is vertically arranged downwards and extends into the position below the support stand (5) through the through hole I; one end of the spray liquid pipe (19) is connected with the oil nozzle (2), and the other end of the spray liquid pipe penetrates out of the box body (1) and is connected with the oil nozzle comprehensive flow meter; the light supplementing mechanism is arranged in the box body (1) and provides illumination required by shooting.
2. The oil nozzle atomization observation experiment device of claim 1, characterized in that: the fixing frame (7) comprises two screw rods (8), a pressing plate (9) and nuts (11), the two screw rods (8) are vertically arranged in the middle of the support platform (5) and located on two sides of the through hole I; the oil injection nozzle is characterized in that the pressing plate (9) is horizontally arranged on the screw rod (8), the upper end face and the lower end face of the pressing plate (9) are fixed through nuts (11), a through hole II is formed in the middle of the pressing plate (9), the diameter of the through hole II is larger than that of an upper pipe section (25) of the oil injection nozzle (2) and smaller than that of a middle pipe section (26) of the oil injection nozzle (2), and the upper pipe section (25) of the oil injection nozzle (2) stretches out of the pressing plate (9) through the through hole II.
3. The oil nozzle atomization observation experiment device of claim 2, characterized in that: still include gasket (10), gasket (10) locate on a support platform (5), the middle part of gasket (10) is equipped with through-hole III, the diameter of lower pipeline section (27) be less than the diameter of through-hole III, the diameter of well pipeline section (26) be greater than the diameter of through-hole III, lower pipeline section (27) are in proper order through-hole III, through-hole I stretch into below a support platform (5).
4. The oil nozzle atomization observation experiment device of claim 1, characterized in that: support (4) constitute by two backup pads (41) and a panel (42), backup pad (41) and panel (42) all vertical setting, two backup pads (41) respectively with the both sides limit fixed connection of panel (42), the panel of two sets of supports (4) sets up relatively and is parallel to each other.
5. The oil nozzle atomization observation experiment device of claim 1, characterized in that: still include scale (12), the middle part fixed connection of the upper end of scale (12) and support platform (5) back side edge, vertical downwardly extending of scale (12).
6. The oil nozzle atomization observation experiment device of claim 1, characterized in that: four corners of the bottom of the box body (1) are provided with supporting legs (21).
7. The oil nozzle atomization observation experiment device of claim 1, characterized in that: the door (3) comprises a door plate (13) and a door frame (14), the rear end of the door frame (14) is connected with the box body (1), and a circle of sealing ring (15) is arranged on the edge of the end face of the front end.
8. The oil nozzle atomization observation experiment device of claim 7, characterized in that: the observation window is arranged on the door panel (13), or the whole door panel (13) is made of transparent materials.
9. The oil nozzle atomization observation experiment device of claim 8, characterized in that: the high-speed shooting device comprises a high-speed camera (16), a tripod head (28), an expansion link (17) and a tripod (18), wherein the tripod (18) is arranged right in front of the box body (1) and is positioned on the central line of the box body (1), the expansion link (17) is vertically arranged on the tripod (18), the tripod head (28) is arranged at the upper end of the expansion link (17), and the high-speed camera (16) is arranged on the tripod head (28) and is aligned to the observation window.
10. The oil nozzle atomization observation experiment device of claim 1, characterized in that: the light supplementing mechanism comprises a lighting control switch (20), a vertical light bar and an annular light bar; the annular light bar is arranged in the middle of the inner top of the box body (1), and a light softening plate (23) is arranged below the annular light bar; the vertical light bars are arranged at four corners of the inner side of the box body (1) and extend from the bottom plate to the light softening plate (23); the lighting control switch (20) is arranged on the front side face of the box body (1) and used for controlling the opening and closing of the vertical light bar and the annular light bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644428.5A CN111852711A (en) | 2020-07-07 | 2020-07-07 | Experimental apparatus is surveyd in fuel sprayer atomizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010644428.5A CN111852711A (en) | 2020-07-07 | 2020-07-07 | Experimental apparatus is surveyd in fuel sprayer atomizing |
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| Publication Number | Publication Date |
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| CN111852711A true CN111852711A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010644428.5A Pending CN111852711A (en) | 2020-07-07 | 2020-07-07 | Experimental apparatus is surveyd in fuel sprayer atomizing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115248114A (en) * | 2022-09-22 | 2022-10-28 | 常州市永春医疗器械有限公司 | Intelligent oil nozzle detection equipment and detection method thereof |
-
2020
- 2020-07-07 CN CN202010644428.5A patent/CN111852711A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115248114A (en) * | 2022-09-22 | 2022-10-28 | 常州市永春医疗器械有限公司 | Intelligent oil nozzle detection equipment and detection method thereof |
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