CN110939523A - Fuel leakage alarm system and fuel system - Google Patents
Fuel leakage alarm system and fuel system Download PDFInfo
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- CN110939523A CN110939523A CN201911387433.6A CN201911387433A CN110939523A CN 110939523 A CN110939523 A CN 110939523A CN 201911387433 A CN201911387433 A CN 201911387433A CN 110939523 A CN110939523 A CN 110939523A
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- 239000000446 fuel Substances 0.000 title claims abstract description 186
- 239000003921 oil Substances 0.000 claims abstract description 368
- 239000000295 fuel oil Substances 0.000 claims abstract description 50
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 9
- 239000002828 fuel tank Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/224—Diagnosis of the fuel system
- F02D2041/225—Leakage detection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D2041/228—Warning displays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The application discloses fuel leakage alarm system and fuel system relates to engine technical field. The fuel leakage alarm system comprises a high-pressure fuel pipe leakage oil way, a fuel injector oil return oil way and a fuel leakage alarm; the high-pressure oil pipe leakage oil way is connected with the fuel oil leakage alarm, and the fuel injector oil return oil way is connected with the fuel oil leakage alarm; the fuel leakage alarm is used for alarming the oil leakage caused by the burst of the high-pressure oil pipe. The fuel leakage alarm system can realize automatic reset of the fuel system after alarm, simplify the pipeline of the whole machine, reduce fuel leakage points in the using process of the whole machine and reduce the cost of the whole machine.
Description
Technical Field
The application relates to the technical field of engines, in particular to a fuel leakage alarm system and a fuel system.
Background
The high-pressure oil pipe in the marine diesel engine is easy to splash after bursting to cause fire. In order to improve the safety of the diesel engine, a pipeline is often added to connect the high-pressure oil pipes and then a fuel oil leakage alarm is connected. The alarm and one path of fuel pipeline are added, so that the concise arrangement of the whole machine is influenced, the cost of the whole machine is increased, and an operator is required to perform manual reset operation on the fuel system after alarming.
Disclosure of Invention
The application provides a fuel leakage alarm system and fuel system can realize fuel system alarm back automatic re-setting, simplifies the complete machine pipeline, reduces the fuel leakage point in the complete machine use, reduces the complete machine cost.
The first aspect provides a fuel leakage alarm system, which comprises a high-pressure fuel pipe leakage oil way, a fuel injector return oil way and a fuel leakage alarm; the high-pressure oil pipe leakage oil way is connected with the fuel oil leakage alarm, and the fuel injector oil return oil way is connected with the fuel oil leakage alarm; the fuel leakage alarm is used for alarming the oil leakage caused by the burst of the high-pressure oil pipe.
According to the technical scheme, fuel oil from a daily oil tank is pressurized by the fuel injection pump and then enters the fuel injector through the high-pressure oil pipe, the fuel oil leakage alarm system enables the high-pressure oil pipe leakage oil way and the fuel injector return oil way to be connected to the fuel oil leakage alarm, so that fuel oil of the fuel injector and return oil leaked from the high-pressure oil pipe (no high-pressure oil pipe leakage return oil exists when the high-pressure oil pipe is not broken) are jointly connected into the fuel oil leakage alarm, the return oil is discharged from the fuel oil leakage alarm and enters the oil collecting tank, a pipeline is not required to be additionally arranged to connect the return oil of the fuel injector back to the daily oil tank, the pipeline of.
With reference to the first aspect, in a first possible implementation manner of the first aspect of the present application, the fuel leakage warning system further includes a junction pipe; the oil return oil path of the oil sprayer is connected with the high-pressure oil pipe leakage oil path after being converged in the converging pipeline, and the converging pipeline is connected with the fuel leakage alarm.
According to the technical scheme, the oil return path of the oil injector is converged with the leakage oil path of the high-pressure oil pipe and then connected to the converging pipeline, so that the oil return path of the oil injector and the leakage oil path of the high-pressure oil pipe are combined into one at the front end and then jointly connected to the fuel leakage alarm, and the space of the converging pipeline is reserved only in the laying process at the rear end of a system pipeline, so that the pipeline arrangement of the whole machine is further simplified.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect of the present application, the fuel leakage alarm includes an oil cavity, a floating ball alarm device, a first oil outlet pipe, and a second oil outlet pipe; the oil cavity is provided with an oil inlet, and the converging pipeline is connected with the oil inlet; the first oil outlet pipe is connected to the oil cavity; the second oil outlet pipe is arranged in the oil cavity and communicated with the first oil outlet pipe; the floating ball alarm device is arranged in the oil cavity and used for alarming.
According to the technical scheme, when the high-pressure oil pipe is not broken, the return oil of the oil sprayer enters the oil cavity through the oil inlet and is discharged from the oil cavity through the first oil outlet pipe, the oil return amount of the oil sprayer is small, the first oil outlet pipe can meet the requirement that all fuel oil in the oil cavity is discharged, and the floating ball alarm device cannot trigger an alarm; when the high-pressure oil pipe is broken, a large amount of fuel oil is sprayed out of the high-pressure oil pipe and is converged into the converging pipeline together with return oil of the oil sprayer, and the amount of the fuel oil which instantly enters the oil cavity from the oil inlet is suddenly increased, so that the first oil outlet pipe cannot meet the requirement that all the fuel oil in the oil cavity is discharged in time, the liquid level of the fuel oil in the oil cavity is increased, and the floating ball alarm device can trigger alarm; the second oil outlet pipe can collect the suddenly increased fuel oil into the first oil outlet pipe, so that the fuel oil in the oil cavity flows out quickly after triggering alarm, the fuel oil level in the oil cavity is recovered to be normal, the automatic reset of the floating ball alarm device is realized, and the manual oil drainage reset operation is avoided.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect of the present application, the first oil outlet pipe is provided with a first oil outlet and a total oil outlet, and the second oil outlet pipe is provided with a second oil outlet; the height of the oil inlet relative to the oil cavity is larger than that of the second oil outlet relative to the oil cavity, the height of the second oil outlet relative to the oil cavity is larger than that of the first oil outlet relative to the oil cavity, the diameter of the second oil outlet is larger than that of the first oil outlet, and the diameter of the total oil outlet is larger than that of the first oil outlet.
According to the technical scheme, the height of the oil inlet relative to the oil cavity is larger than that of the second oil outlet relative to the oil cavity, and the height of the second oil outlet relative to the oil cavity is larger than that of the first oil outlet relative to the oil cavity, so that fuel oil entering the oil cavity firstly flows into the first oil outlet pipe from the first oil outlet and is discharged through the first oil outlet pipe, and the flow of the fuel oil under the normal condition that a high-pressure oil pipe is not broken is met; when the high-pressure oil pipe is broken, the diameter of the second oil outlet is larger than that of the first oil outlet, the diameter of the total oil outlet is larger than that of the first oil outlet, and fuel oil suddenly increased in the oil cavity cannot be discharged in time through the first oil outlet, so that the liquid level of the fuel oil rises, and the floating ball alarm device rises to trigger alarm; if the oil drainage quantity entering the oil cavity is continuously increased, the fuel oil can be quickly converged into the second oil outlet pipe from the second oil outlet and then converged into the first oil outlet pipe, and finally the fuel oil is quickly discharged from the main oil outlet, so that the liquid level of the fuel oil in the oil cavity is recovered to be normal, the automatic reset of the floating ball alarm device is realized, and the manual oil drainage reset operation is avoided.
With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect of the present application, the floating ball alarm device is a floating ball type liquid level sensor.
According to the technical scheme, the floating ball type liquid level sensor is adopted as the floating ball alarm device, so that the triggering alarm is more accurate, and the response is faster.
In a second aspect, a fuel system is provided, which includes the fuel leakage warning system of the first aspect or any one of the possible implementation manners of the first aspect; the fuel system also comprises a daily oil tank, an oil collecting tank, an oil injection pump, a high-pressure oil pipe and an oil injector; the daily oil tank is connected to the oil injection pump, the oil injection pump is connected to the oil injector through the high-pressure oil pipe, the leakage oil path of the high-pressure oil pipe is connected to the high-pressure oil pipe, the oil return oil path of the oil injector is connected to the oil injector, and the oil collecting tank is connected to the fuel leakage alarm.
According to the technical scheme, the fuel system adopts the fuel leakage alarm system, so that the pipeline of the whole system can be simplified, thereby reducing fuel leakage points in the use process of the fuel system and reducing the cost.
With reference to the second aspect, in a first possible implementation manner of the second aspect of the present application, the high-pressure oil pipe is a double-layer oil pipe, and the high-pressure oil pipe leakage oil path is connected to an outer layer of the double-layer oil pipe.
According to the technical scheme, the high-pressure oil pipe adopts the double-layer oil pipe, the high-pressure oil pipe leakage oil way is connected to the outer layer of the double-layer oil pipe, when the inner layer pipe of the high-pressure oil pipe leaks, leaked oil can enter the outer layer pipe, and the high-pressure leaked oil can be rapidly and safely converged into the high-pressure oil pipe leakage oil way.
With reference to the second aspect, in a second possible implementation manner of the second aspect of the present application, the fuel system further includes a delivery pump; a delivery pump is arranged between the daily oil tank and the oil injection pump; the oil collecting tank is connected with the daily oil tank through a delivery pump.
Above-mentioned technical scheme can accelerate the flow of fuel through the delivery pump, improves fuel system's availability factor.
In combination with the second aspect, in a third possible implementation manner of the second aspect of the present application, the fuel system further includes a fuel return oil path, the fuel return oil path is connected to the fuel injection pump, and the fuel return oil path is connected to the daily oil tank.
Above-mentioned technical scheme, fuel oil return oil circuit is arranged in receiving the normal draining in the injection pump and carries the normal draining to daily oil tank, avoids normal draining to cause the damage or the pollution of equipment, practices thrift the cost simultaneously.
With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect of the present application, the fuel system further includes a check valve; the fuel oil return oil circuit is provided with a one-way valve, and the one-way valve is arranged between the daily oil tank and the oil injection pump.
According to the technical scheme, the one-way valve is used for preventing the fuel oil in the fuel oil pipeline from flowing reversely, and the use safety of the fuel oil system is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural view of a fuel leak warning system in an alternative embodiment of the present application;
FIG. 2 is a schematic view of a fuel leak alarm according to an alternative embodiment of the present application from a first perspective;
FIG. 3 is a schematic view of a fuel leak alarm in a second perspective view according to an alternative embodiment of the present application;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic illustration of a fuel system according to an alternative embodiment of the present application.
Icon: I-NO normally open point; II-NC normally closed point; 10-fuel leakage alarm system; 110-high pressure oil pipe leakage oil path; 120-oil return path of oil injector; 130-a converging duct; 140-fuel leakage alarm; 142-an oil cavity; 1422 — oil inlet; 144-floating ball alarm device; 1442-floating ball; 1444-level switch; 146-a first oil outlet pipe; 1462 — a first oil outlet; 1464-total oil outlet; 148-a second oil outlet pipe; 1482-second outlet port; 20-a fuel system; 22-fuel oil return path; 210-daily oil tank; 220-an oil collecting tank; 230-an injection pump; 240-high pressure oil pipe; 250-an oil injector; 260-a delivery pump; 270-a one-way valve; 280-fuel oil filter; 290-stop valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is to be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, the first feature may be directly on or under the second feature or may include both the first and second features being in direct contact, but also the first and second features being in contact via another feature between them, not being in direct contact. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The existing fuel leakage alarm system is characterized in that high-pressure oil drain openings of high-pressure oil pipes are connected in series through a main oil collecting pipe to form a single fuel oil path and then connected with a fuel oil leakage alarm, fuel oil leaked from the high-pressure oil pipes is introduced into the fuel oil leakage alarm, and meanwhile, the alarm needs to be reset by manual oil drainage. The return oil of the oil injector is connected back to the daily oil tank through another pipeline. Because the existing fuel leakage alarm system is an independent system, space needs to be reserved for laying the system pipeline during design, and the extra pipeline enables the whole machine to be more complicated to arrange, not simple and compact enough, increases the risk point of oil leakage, and also improves the cost of the whole machine. When the alarm is drained manually, the drained fuel oil needs to be caught by an operator with a container, so that the workload of the operator is increased, and the operation is inconvenient.
An optional embodiment of the present application provides a fuel leakage alarm system 10, in which a fuel injector return oil path 120 and a high-pressure fuel pipe leakage oil path 110 are merged and then connected to a merging pipeline 130, so that the return oil of a fuel injector 250 and the return oil of the high-pressure fuel pipe 240 are merged into one and then connected to a fuel leakage alarm 140 together, and only a space of the merging pipeline 130 needs to be reserved in laying of a system pipeline, thereby further simplifying the pipeline arrangement of the whole machine.
Referring initially to fig. 1 and 5, fig. 1 illustrates a schematic configuration of a fuel leak warning system 10 provided in an alternative embodiment of the present application, and fig. 5 illustrates a schematic configuration of a fuel system 20 provided in another alternative embodiment of the present application.
The fuel leakage alarm system 10 is a part of a fuel system 20 applied to a marine diesel engine, and is used for timely alarming abnormal oil drainage of a high-pressure oil pipe 240. The fuel leak warning system 10 includes a high pressure line leak path 110, a fuel injector return path 120, a junction line 130, and a fuel leak warning 140.
It should be noted that the embodiment of the present application does not limit the specific application scenario of the fuel system 20, and in some other alternative embodiments, the fuel system 20 may also be applied to a gasoline engine or other scenarios.
It should be noted that, in the fuel system 20 provided in the embodiment of the present application, two fuel injection pumps 230 and two fuel injectors 250 are provided, the two fuel injection pumps 230 are connected in series through the fuel return oil path 22, and each fuel injection pump 230 is correspondingly connected to one fuel injector 250. Correspondingly, two branched merging pipelines 130 are arranged in the fuel system 20, and the two branched merging pipelines 130 are finally merged into one pipeline and then connected into the fuel leakage alarm 140.
The fuel in the fuel system 20 is delivered from the day tank 210 to the fuel filter 280 through a pipeline for filtering, and then delivered to the fuel injection pump 230, the fuel injection pump 230 pressurizes the fuel and then delivers the pressurized fuel to the fuel injection nozzle of the fuel injector 250 through the high-pressure fuel pipe 240, and the fuel injection nozzle atomizes the fuel into fine particles and uniformly injects the fine particles into the combustion chamber of the diesel engine for combustion.
The high pressure oil pipe 240 is a double-layer oil pipe, an inner layer pipe of the high pressure oil pipe is used for conveying pressurized fuel oil, and an outer layer pipe of the high pressure oil pipe is used for receiving leaked fuel oil after the inner layer pipe is cracked, so that the fuel oil is prevented from splashing to cause fire after the inner layer pipe is cracked. The high-pressure oil pipe leakage oil path 110 and the oil injector return oil path 120 are both small-section pipelines, and the specification and the material of the pipelines can be selected according to actual requirements. One end of the high-pressure oil pipe leakage oil path 110 is connected to an outer pipe of the double-layer oil pipe, and the other end of the high-pressure oil pipe leakage oil path 110 is connected to the junction pipe 130. One end of the injector return oil path 120 is connected to the injector 250, and the other end of the injector return oil path 120 is connected to the junction pipe 130. Wherein the junction line 130 may be connected to the injector return line 120 and the high-pressure tube leak line 110 by a tee joint, respectively. Junction line 130 is disposed within a cylinder head (not shown) of fuel system 20, and junction line 130 is in turn connected to a fuel leak alarm 140.
The fuel leakage alarm system 10 connects the high-pressure fuel pipe leakage oil path 110 and the fuel injector return oil path 120 to the fuel leakage alarm 140, so that return oil of the fuel injector 250 and return oil of the high-pressure fuel pipe 240 (no return oil of the high-pressure fuel pipe 240 leaks when the high-pressure fuel pipe 240 is not broken) are jointly connected into the fuel leakage alarm 140, and then the return oil of the fuel injector 250 enters the oil collecting tank 220 from the fuel leakage alarm 140, and no additional pipeline is needed to be arranged to connect the return oil of the fuel injector 250 back to the daily fuel tank 210, so that the pipeline of the whole machine is simplified, fuel leakage points in the use.
With continued reference to fig. 2-4, fig. 2 illustrates a specific configuration of a fuel leak alarm 140 provided in an alternative embodiment of the present application from a first perspective, fig. 3 illustrates a specific configuration of a fuel leak alarm 140 provided in an alternative embodiment of the present application from a second perspective, and fig. 4 illustrates a cross-sectional view along a-a of fig. 3.
The fuel leak alarm 140 includes an oil chamber 142, a float alarm 144, a first outlet line 146, and a second outlet line 148.
The oil cavity 142 is provided with an oil inlet 1422 at a position above the side wall thereof, and the confluence pipe 130 (see fig. 1) is connected to the oil inlet 1422. The first oil outlet pipe 146 is connected to the bottom position of the oil cavity 142, the first oil outlet pipe 146 is provided with a first oil outlet 1462 and a total oil outlet 1464, the first oil outlet 1462 is located in the oil cavity 142, and the total oil outlet 1464 is located outside the oil cavity 142 and is connected to the oil collecting tank 220 through a pipeline (see fig. 5). The second oil outlet pipe 148 is arranged in the oil cavity 142 and is vertically communicated with the first oil outlet pipe 146, a second oil outlet port 1482 is arranged at the upper end of the second oil outlet pipe 148, and the height of the second oil outlet port 1482 is smaller than that of the oil inlet port 1422. Second oil outlet 1482 has a larger diameter than first oil outlet 1462 and total oil outlet 1464 has a larger diameter than first oil outlet 1462.
Referring to fig. 1, fig. 3 and fig. 4, when the high pressure oil pipe 240 is not broken, the return oil of the oil injector 250 enters the oil cavity 142 through the oil inlet 1422, and the amount of the return oil of the oil injector 250 is small, so that the fuel oil entering the oil cavity 142 firstly flows into the first oil outlet pipe 146 through the first oil outlet 1462 and is discharged through the first oil outlet pipe 146, which satisfies the fuel oil flow under the normal condition that the high pressure oil pipe 240 is not broken. And at this moment, the fuel quantity in the oil cavity 142 is less, so that the floating ball 1442 is positioned below the NC normally-closed point II, and an alarm cannot be triggered to give an alarm.
When the high pressure fuel line 240 breaks, a large amount of fuel is discharged from the high pressure fuel line 240 and is combined with the return fuel from the fuel injector 250 into the junction line 130, and the amount of fuel instantaneously entering the oil chamber 142 from the inlet port 1422 suddenly increases. Because the diameter of the first oil outlet 1462 is smaller, the fuel suddenly increased in the oil cavity 142 cannot be discharged in time through the first oil outlet 1462, and the first oil outlet pipe 146 cannot meet the requirement that all the fuel in the oil cavity 142 is discharged in time, so that the fuel level in the oil cavity 142 rises, and the floating ball 1442 rises to the NO normally open point I to trigger alarm. If the amount of oil drainage into the oil cavity 142 continues to increase and the fuel level continues to rise, the fuel will quickly flow into the second oil outlet pipe 148 from the second oil outlet port 1482 and flow into the first oil outlet pipe 146, so that the fuel in the oil cavity 142 will quickly flow out after the alarm is triggered.
After the fault is repaired, the high-pressure oil pipe 240 does not leak any more, the amount of fuel entering the oil cavity 142 is reduced, the liquid level of the fuel in the oil cavity 142 is restored below the NC normally closed point II through the cooperation of the second oil outlet pipe 148, the alarm is automatically released at the moment, the automatic reset of the floating ball alarm device 144 is realized, and the manual oil discharge reset operation is avoided.
Referring to fig. 5 and 1, another embodiment of the present application further provides a fuel system 20, where the fuel system 20 includes a fuel leakage warning system 10, a fuel return path 22, a day tank 210, a sump 220, a fuel injection pump 230, a high-pressure fuel line 240, a fuel injector 250, a check valve 270, a delivery pump 260, a fuel filter 280, and a shutoff valve 290.
The fuel system 20 is provided with two fuel injection pumps 230 and two fuel injectors 250, the two fuel injection pumps 230 are connected in series through a fuel return line 22, the fuel return line 22 is a fuel pipeline, the fuel return line 22 is connected to the day tank 210, and a check valve 270 for preventing backflow is arranged on the fuel return line 22. The fuel leak alarm 140 of the fuel leak alarm system 10 is connected to the oil collection tank 220 by a pipe, and the inlet end of the oil collection tank 220 should be lower than the total oil outlet 1464 of the fuel leak alarm 140 (see fig. 3). The oil collection tank 220 is in turn connected to the day tank 210 by a pipe, and a shutoff valve 290 and a delivery pump 260 are provided on this pipe so that the drain oil collected in the oil collection tank 220 flows into the day tank 210. The day tank 210 delivers fuel to the fuel filter 280 through a pipe, and a shutoff valve 290, a delivery pump 260, and a check valve 270 are provided on the pipe. The fuel filter 280 is in turn connected to the injection pump 230.
The fuel system 20 adopts the fuel leakage alarm system 10, and pipelines of the whole system can be simplified, so that fuel leakage points in the use process of the fuel system 20 are reduced, and the cost is reduced. The flow of fuel can be accelerated by the transfer pump 260, improving the efficiency of use of the fuel system 20.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A fuel leakage alarm system is characterized in that:
the high-pressure oil pipe leakage alarm device comprises a high-pressure oil pipe leakage oil way, an oil sprayer oil return oil way and a fuel oil leakage alarm;
the high-pressure oil pipe leakage oil path is connected with the fuel oil leakage alarm, and the oil injector oil return path is connected with the fuel oil leakage alarm;
the fuel leakage alarm is used for alarming the oil leakage caused by the burst of the high-pressure oil pipe.
2. The fuel leak warning system according to claim 1, characterized in that:
the fuel leakage alarm system also comprises a converging pipeline;
the oil injector oil return path and the high-pressure oil pipe leakage path are converged and then connected to the converging pipeline, and the converging pipeline is connected to the fuel leakage alarm.
3. A fuel leak warning system according to claim 2, wherein:
the fuel leakage alarm comprises an oil cavity, a floating ball alarm device, a first oil outlet pipe and a second oil outlet pipe;
the oil cavity is provided with an oil inlet, and the converging pipeline is connected to the oil inlet;
the first oil outlet pipe is connected to the oil cavity;
the second oil outlet pipe is arranged in the oil cavity and communicated with the first oil outlet pipe;
the floating ball alarm device is arranged in the oil cavity and used for alarming.
4. A fuel leak warning system according to claim 3, wherein:
the first oil outlet pipe is provided with a first oil outlet and a main oil outlet, and the second oil outlet pipe is provided with a second oil outlet;
the height of the oil inlet relative to the oil cavity is greater than that of the second oil outlet relative to the oil cavity, the height of the second oil outlet relative to the oil cavity is greater than that of the first oil outlet relative to the oil cavity, the diameter of the second oil outlet is greater than that of the first oil outlet, and the diameter of the total oil outlet is greater than that of the first oil outlet.
5. A fuel leak warning system according to claim 3, wherein:
the floating ball alarm device is a floating ball type liquid level sensor.
6. A fuel system, characterized by:
the fuel system comprises a fuel leakage warning system according to any one of claims 1 to 5;
the fuel system also comprises a daily oil tank, an oil collecting tank, an oil injection pump, a high-pressure oil pipe and an oil injector;
the daily oil tank is connected with the oil injection pump, the oil injection pump is connected with the oil injector through the high-pressure oil pipe, the leakage oil path of the high-pressure oil pipe is connected with the high-pressure oil pipe, the oil return path of the oil injector is connected with the oil injector, and the oil collecting tank is connected with the fuel leakage alarm.
7. The fuel system as recited in claim 6, wherein:
the high-pressure oil pipe is a double-layer oil pipe, and the high-pressure oil pipe leakage oil way is connected to the outer layer of the double-layer oil pipe.
8. The fuel system as recited in claim 6, wherein:
the fuel system further comprises a delivery pump;
the delivery pump is arranged between the daily oil tank and the oil injection pump;
the oil collecting tank is connected to the daily oil tank through the delivery pump.
9. The fuel system as recited in claim 6, wherein:
the fuel system further comprises a fuel oil return oil way, the fuel oil return oil way is connected to the fuel injection pump, and the fuel oil return oil way is connected to the daily oil tank.
10. The fuel system as recited in claim 9, wherein:
the fuel system further includes a check valve;
the fuel oil return oil way is provided with the one-way valve, and the one-way valve is arranged between the daily fuel tank and the fuel injection pump.
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
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| CN116717370A (en) * | 2023-06-21 | 2023-09-08 | 沪东重机有限公司 | Fuel leakage monitoring device for emergency diesel engine |
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