CN102297023B - Open type cavity structure for preventing oil drops from splashing to affect oil mist sensor - Google Patents
Open type cavity structure for preventing oil drops from splashing to affect oil mist sensor Download PDFInfo
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- CN102297023B CN102297023B CN 201110197512 CN201110197512A CN102297023B CN 102297023 B CN102297023 B CN 102297023B CN 201110197512 CN201110197512 CN 201110197512 CN 201110197512 A CN201110197512 A CN 201110197512A CN 102297023 B CN102297023 B CN 102297023B
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- oil mist
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- splashing
- oil
- mist sensor
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Abstract
The invention discloses an open type cavity structure for preventing oil drops from splashing to affect an oil mist sensor, which comprises an oil mist sensor-mounting component and a shell; the oil mist sensor-mounting component is positioned in the center of the open type cavity structure; the shell comprises at least three layers of structures, and wraps the periphery of the oil mist sensor-mounting component in the form of a sleeve; each layer of structure of the shell is provided with a notch, and the notches of each two neighboring layers of structures are staggered from each other; moreover, the notch of one layer of structure is completely covered by the unnotched part of the neighboring layer of structure; and both ends of the shell are closed. By means of the design of the multi-layered notched cavity structure, a labyrinth type structure is formed outside the photoelectric sensor of an oil mist detector, so that splashed oil drops can be effectively shielded. Meanwhile, the open type cavity design ensures that oil mist as sampled gas still can be uniformly diffused to the position of the sensor, and thereby the normal operation of the oil mist detector is guaranteed.
Description
Technical field
The present invention relates to a kind of cavity body structure, relate in particular to and a kind ofly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor.
Background technique
When the oil mist concentration of the small spaces such as cabin, crankcase reaches 50mg/L, the danger of fire or blast is just arranged.The diesel engine crankcase blast that mist of oil causes, not only can cause serious economic consequences, and can cause personal injury, so International Association of Classification Societies (IACS) includes corresponding standard in " temperature-detecting device or other similar detecting instrument of oil mist detector or all bearing portions must be installed " of stipulating in " the above or diesel engine fire prevention of power more than 2250kW of cylinder bore 300mm " chapter.
The working principle of oil mist detector is that the laser of being launched by photoelectric sensor passes sample gas, measures the transmittance of its light.Because transmittance and concentration meet Lang Pa-Beer law, can be by obtaining the concentration of mist of oil in the diesel engine crankcase.When reaching certain concentration, sends mist of oil alarm signal.
But in the diesel engine crankcase, the fluid that lubrication system causes splashes, and can affect the photoelectric sensor work of the oil mist detector that is installed on the tank wall.Oil droplet pollutes in case sensor surface is splashed, and will cause this sensor measurement signal total failure, thereby false alarm occurs, even causes diesel engine stop.Especially boat-carrying, Marine Diesel Engine Based are reported to the police or are stopped in case produce, and will cause serious loss.
Based on the working principle of oil mist detector, photoelectric sensor must be exposed in the case, with collection in worksite oil mist concentration index; But this sensor can not be invaded and harassed by the liquid oil droplet again.This just require the photoelectric sensor of oil mist detector must be in an opening, can prevent in the cavity that the oil droplet all directions splash.
Summary of the invention
The present invention has designed and developed and has a kind ofly prevented that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, the design of the tool cavity body structure jaggy by multilayer, so that in the outside of the photoelectric sensor of oil mist detector, the structure of one " labyrinth " formula of formation, effectively blocked splashing of liquid oil droplet, made the oil droplet of all directions all can not arrive sensing station.Simultaneously, open cavity design so that mist of oil as sample gas, still can flow to sensing station, has guaranteed the normal operation of oil mist detector.
Technological scheme provided by the invention is:
A kind ofly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, comprising:
The oil mist sensor installation component, it is positioned at the center portion of described open cavity structure;
Housing, it is at least three-decker, is coated on the periphery of described oil mist sensor installation component with the form of sleeve;
Wherein, all have breach on each of described housing layer structure, and the breach of its adjacent two layers structure staggers mutually; And the breach of its one deck structure is blocked fully by the not gap portions of adjacent one deck structure; And the closed at both ends of described housing.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, the installation component of described oil mist sensor comprises the installation frame of hollow, oil mist sensor is installed in the two ends hollow portion of installation frame of described hollow, and the two ends of the installation frame of described hollow are connected to the two ends of the innermost layer structure of described housing, and the middle part of the installation frame of hollow is opened wide to the innermost layer structure of described each layer structure.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that the breach between the adjacent two layers structure of described housing is spaced with gap portions not.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, the size along the housing circumferential direction of each of described housing layer structural breach be between the girth of layer structure separately 1/4～1/3 between, namely with respect to the angle of the circumferential two ends of this breach between the line in the cross section center of circle between 90 degree between 120 degree.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that number and the area of each of described housing layer structural breach are with respect to the center line at two ends, the relative left and right sides of housing, symmetry.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that each of described housing layer structural breach expands into a rectangular.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that in the described housing, wherein the breach number of one deck structure is three, its width in axial direction is 10mm; Wherein the breach number of another layer housing is four, and its width in axial direction is 5mm.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, in each of described housing layer structure, in each of described housing layer structure, the gap width of outermost surface structure is in the situation of 10mm, and the gap width of its adjacent inboard shell construction is 5mm.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, each of described housing layer structural breach only is distributed on the lower semi-circle stylolitic part of use of each layer structure, and do not have breach on the upper semi-circle stylolitic part of the use of each layer structure.
Preferably, describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that the edge of the breach of the outermost surface structure of described housing has outwards routed up flange.
Of the present inventionly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, the design of the tool cavity body structure jaggy by multilayer, so that in the outside of the photoelectric sensor of oil mist detector, the structure of one " labyrinth " formula of formation, effectively blocked splashing of liquid oil droplet, made the oil droplet of all directions all can not arrive sensing station.Simultaneously, open cavity design so that mist of oil as sample gas, still can evenly be diffused into sensing station, has guaranteed the normal operation of oil mist detector.
Description of drawings
Fig. 1 is the splash structural representation of the open cavity structure of invading and harassing oil mist sensor of oil droplet that prevents of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing, can implement according to this with reference to the specification literal to make those skilled in the art.
As shown in Figure 1, the invention provides and a kind ofly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, comprising: oil mist sensor installation component 3, it is positioned at the center portion of described open cavity structure; Housing 2, it is at least three-decker, is coated on the periphery of described oil mist sensor installation component with the form of sleeve; Wherein, all have breach on each of described housing layer structure, and the breach of its adjacent two layers structure staggers mutually; And the breach of its one deck structure is blocked fully by the not gap portions of adjacent one deck structure; And the closed at both ends of described housing.
The breach that mutually staggers on the multilayer shell is reserved the passage of " bending " for mist of oil, guarantees that mist of oil can flow to sensing station.And because the barrier effect of multilayer shell, the drop that splashes can't reach the sensor sensing position, also can't cause the pollution to sensor.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, the installation component 3 of described oil mist sensor 1 comprises the installation frame of hollow, oil mist sensor is installed in the two ends hollow portion of installation frame of described hollow, and the two ends of the installation frame of described hollow are connected to the two ends of the innermost layer structure of described housing, and the middle part of the installation frame of hollow is opened wide to the innermost layer structure of described each layer structure.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that the breach between the adjacent two layers structure of described housing 2 is spaced with gap portions not.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, the size along the housing circumferential direction of the structural breach of each layer of described housing 2 be between the girth of layer structure separately 1/4～1/3 between, namely with respect to the angle of the circumferential two ends of this breach between the line in the cross section center of circle between 90 degree between 120 degree.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that number and the area of the structural breach of each layer of described housing 2 are with respect to the center line at two ends, the relative left and right sides of housing, symmetry.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that the structural breach of each layer of described housing 2 expands into a rectangular.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that in the described housing 2, wherein the breach number of one deck structure is three, its width in axial direction is 10mm; Wherein the breach number of another layer structure is four, and its width in axial direction is 5mm.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, in each layer structure of described housing 2, in each of described housing layer structure, the gap width of outermost surface structure is in the situation of 10mm, and the gap width of its adjacent inboard shell construction is 5mm.
In one embodiment, to the angle between the line in the cross section center of circle, its angle is 120 degree to housing 2 each layer structure breach with respect to the circumferential two ends of this breach.This angle too small is unfavorable for the diffusion of sample gas; If excessive, might can't block the less drop of granularity again.Therefore, this angle to 120 these scopes of degree, can realize above-mentioned purpose at 90 degree.
Above-mentioned housing 2 is divided into three layers, and breach expands into rectangular.Its outermost surface housing breach is three, and width is 10mm; Adjacent one deck breach is four, and width is 5mm; The innermost layer breach is three, and width is 10mm.And the breach on each layer housing, on number and area, all symmetrical with respect to the center line at two ends, the housing left and right sides.This be because, sensor just in time is in the center of cavity, the symmetric design of breach has guaranteed the even diffusion of sample gas, is conducive to guarantee to detect effect.And the selection of notch geometry, and not only be confined to rectangular, because its diffusion that is mainly sample gas provides passage.The size of breach also is not limited in above-mentioned dimension width.But the purposes of considering cavity is to protect sensor, and sensor bulk and little, the volume of the cavity that cooperates with it is also unsuitable excessive, and therefore, this size that has just limited breach is unsuitable excessive.And excessive breach also is unfavorable for blocking the drop that splashes.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor, the structural breach of each layer of described housing 2 only is distributed on the lower semi-circle stylolitic part of use of each layer structure, and do not have breach on the upper semi-circle stylolitic part of the use of each layer structure.
Describedly prevent that oil droplet from splashing and invade and harass in the open cavity structure of oil mist sensor that the edge of the breach of the outermost surface structure of described housing 2 has outwards routed up flange.
Because the drop that splashes is sudden from all directions, consider that the drop gravitate can downward landing.Above-mentioned shell construction, in use, so that a tool side jaggy below, thereby make the drop that comes that splashes from the top can't enter cavity.
Simultaneously, can be along the chamber outer surface landing from the drop of top, above-mentioned housing is outwards routed up at its outermost gap edge place, avoids drop to hang in the housing indentation, there; And the edge that opens also helps to block the drop that a part is splashed.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in specification and the mode of execution, it can be applied to various suitable the field of the invention fully, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (10)
1. one kind prevents that oil droplet from splashing and invades and harasses the open cavity structure of oil mist sensor, it is characterized in that, comprising:
The oil mist sensor installation component, it is positioned at the center portion of described open cavity structure;
Housing, it is at least three-decker, is coated on the periphery of described oil mist sensor installation component with the form of sleeve;
Wherein, all have breach on each of described housing layer structure, and the breach of its adjacent two layers structure staggers mutually; And the breach of its one deck structure is blocked fully by the not gap portions of adjacent one deck structure; And the closed at both ends of described housing.
2. as claimed in claim 1ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that, the installation component of described oil mist sensor comprises the installation frame of hollow, oil mist sensor is installed in the two ends hollow portion of installation frame of described hollow, and the two ends of the installation frame of described hollow are connected to the two ends of the innermost layer structure of described housing, and the middle part of the installation frame of hollow is opened wide to the innermost layer structure of described each layer structure.
3. as claimed in claim 1ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that the breach between the adjacent two layers structure of described housing is spaced with gap portions not.
4. as claimed in claim 1ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that, the size along the housing circumferential direction of each of described housing layer structural breach be between the girth of layer structure separately 1/4～1/3 between, namely with respect to the angle of the circumferential two ends of this breach between the line in the cross section center of circle between 90 degree between 120 degree.
5. as claimed in claim 1ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that number and the area of each of described housing layer structural breach are with respect to the center line at two ends, the relative left and right sides of housing, symmetry.
6. describedly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor such as claim 4 or 5, it is characterized in that each of described housing layer structural breach expands into a rectangular.
7. as claimed in claim 6ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that described housing is three-decker; In the described housing, the breach number that wherein is positioned at innermost layer and outermost double-layer structure is three, and its width in axial direction is 10mm; The breach number of one deck structure is four in the middle of wherein being positioned at, and its width in axial direction is 5mm.
8. as claimed in claim 6ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that, in each of described housing layer structure, the gap width of outermost surface structure is in the situation of 10mm, and the gap width of its adjacent inboard shell construction is 5mm.
9. as claimed in claim 1ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that, each of described housing layer structural breach only is distributed on the lower semi-circle stylolitic part of use of each layer structure, and do not have breach on the upper semi-circle stylolitic part of the use of each layer structure.
10. as claimed in claim 1ly prevent that oil droplet from splashing and invade and harass the open cavity structure of oil mist sensor, it is characterized in that the edge of the breach of the outermost surface structure of described housing has outwards routed up flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110197512 CN102297023B (en) | 2011-07-14 | 2011-07-14 | Open type cavity structure for preventing oil drops from splashing to affect oil mist sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110197512 CN102297023B (en) | 2011-07-14 | 2011-07-14 | Open type cavity structure for preventing oil drops from splashing to affect oil mist sensor |
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| Publication Number | Publication Date |
|---|---|
| CN102297023A CN102297023A (en) | 2011-12-28 |
| CN102297023B true CN102297023B (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110197512 Expired - Fee Related CN102297023B (en) | 2011-07-14 | 2011-07-14 | Open type cavity structure for preventing oil drops from splashing to affect oil mist sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106762135A (en) * | 2016-12-28 | 2017-05-31 | 沪东重机有限公司 | Auxiliary stand and its mounting arrangement method for installing oil mist detection device assembly |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB804541A (en) * | 1954-11-05 | 1958-11-19 | Graviner Manufacturing Co | Improvements in detectors of oil mists and the like |
| JPH03172524A (en) * | 1989-11-30 | 1991-07-25 | Toyota Autom Loom Works Ltd | Mechanism for preventing engine trouble by sensing abnormal pressure in pcv room |
| JP3957639B2 (en) * | 2003-01-10 | 2007-08-15 | 株式会社堀場製作所 | Oil mist detection device |
| JP3840470B2 (en) * | 2003-12-03 | 2006-11-01 | 株式会社堀場製作所 | Oil mist detection device |
| JP5032836B2 (en) * | 2006-12-21 | 2012-09-26 | 株式会社堀場製作所 | Oil mist detection device |
| CN201851215U (en) * | 2010-10-15 | 2011-06-01 | 詹朝润 | Main oil mist detector |
| CN202140136U (en) * | 2011-07-14 | 2012-02-08 | 北京伟林科信科技有限公司 | Open type cavity structure preventing splashed oil drops from intruding oil mist sensor |
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| CN102297023A (en) | 2011-12-28 |
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Owner name: BEIJING XINHANGZHI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING WEILIN KEXIN TECHNOLOGY CO., LTD. Effective date: 20121213 |
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Inventor after: Tang Xiushuai Inventor after: Zhang Haidi Inventor after: Kong Zhenbiao Inventor after: Yu Jun Inventor before: Yu Xiaodong |
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Free format text: CORRECT: INVENTOR; FROM: YU XIAODONG TO: TANG XIUSHUAI ZHANG HAIDI KONG ZHENBIAO YU JUN |
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Effective date of registration: 20121213 Address after: 100085, room 402, Nantian building, 10 information road, Haidian District, Beijing Applicant after: Beijing New Intelligent Tech Co., Ltd. Address before: 100085, room 402, Nantian building, 10 information road, Haidian District, Beijing Applicant before: Beijing Weilin Kexin Technology Co.,Ltd. |
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