CN103674444A - Fuel oil system leak detection device and method - Google Patents
Fuel oil system leak detection device and method Download PDFInfo
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- CN103674444A CN103674444A CN201210365077.XA CN201210365077A CN103674444A CN 103674444 A CN103674444 A CN 103674444A CN 201210365077 A CN201210365077 A CN 201210365077A CN 103674444 A CN103674444 A CN 103674444A
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Abstract
The embodiment of the invention discloses a fuel oil system leak detection device and a fuel oil system leak detection method. The fuel oil system leak detection device comprises a gas source for providing high pressure gas, a one-way valve connected with the gas source, and a pressure-sensing sensor which is connected with a fuel oil system and the one-way valve respectively and can perform warning when detecting a decrease value of pressure in an airflow channel reaches a preset value in preset time, wherein the gas source, the one-way valve, the pressure-sensing sensor and the fuel oil system are connected with one another sequentially through air pipes. According to the fuel oil system leak detection device provided by the invention, the fuel oil system is inflated with the gas source through the one-way valve and the pressure-sensing sensor; and the pressure-sensing sensor performs warning when detecting the decrease value of the pressure reaches the preset value in the preset time, such that poor gas tightness of the fuel oil system can be prompted. The fuel oil system leak detection device is simple in structure and can effectively detect the gas tightness of the fuel oil system.
Description
Technical field
The present invention relates to impermeability detection technique field, more particularly, relate to a kind of fuel system leak-checking apparatus and method.
Background technology
Fuel system is for providing required fuel to fuel oil equipment, for example, automotive fuel oil system is according to the needs of engine operating condition, to engine, supply with gasoline some, plot, materialization is good, to be mixed to form combustion mixture with the air of some, fuel system also needs to store a considerable amount of gasoline simultaneously, to guarantee that automobile has continual mileage quite far away.Therefore the bubble-tight quality of fuel system directly affects the performance of automobile, therefore how the impermeability of fuel system is carried out effectively measuring and becoming problem demanding prompt solution.
Summary of the invention
In view of this, the application provides a kind of fuel system leak-checking apparatus and method, with the impermeability to fuel system, effectively measures.
For achieving the above object, the invention provides following technical scheme:
A fuel system leak-checking apparatus, comprising:
The source of the gas of gases at high pressure is provided;
The retaining valve being connected with described source of the gas;
Be connected with described retaining valve with described fuel system respectively, and in Preset Time being detected in gas channel the reduction value of pressure reach the pressure detecting sensor of preset value alarm;
Described source of the gas, retaining valve, pressure detecting sensor and described fuel system are connected by snorkel successively.
Said apparatus, preferred, also comprise:
Detect the leak locator of the concrete leak position of described fuel system.
Said apparatus, preferred, described leak locator comprises to the sprinkling instrument of each parts tie point spraying liquid foam of described fuel system.
Said apparatus, preferred, described source of the gas comprises the source of the gas that compressed inert is provided.
Said apparatus, preferred, described leak locator comprises inert gas collection instrument.
Said apparatus, preferred, also comprise:
Be arranged on described snorkel, control the switch of the open and close of described snorkel.
Said apparatus, preferred, also comprise:
When described pressure detecting sensor detects in Preset Time that in gas channel, the reduction value of pressure reaches preset value, control the controller that described switch cuts out.
Said apparatus, preferred, the gas outlet pipeline of described fuel system leak-checking apparatus is connected with the oil-in of described fuel system by link bolt.
A fuel system measuring method, is applied to fuel system measurement mechanism, and described device comprises: source of the gas, retaining valve and pressure detecting sensor; Described method comprises:
Gases at high pressure in source of the gas enter described fuel system through retaining valve and pressure detecting sensor successively;
When the force value of described pressure detecting sensor reaches preset value, close source of the gas;
Described pressure detecting sensor in Preset Time being detected in gas channel the reduction value of pressure reach preset value alarm.
Said method, preferred, the gas in described source of the gas is inert gas, corresponding, described method also comprises:
By inert gas collection instrument, detect inert gas, to detect the concrete leak position of described fuel system.
Known by above scheme, a kind of fuel system leak-checking apparatus that the application provides, source of the gas is inflated to fuel system by retaining valve and pressure detecting sensor, when reaching preset value, the reduction value that Preset Time internal pressure detected when pressure detecting sensor reports to the police, bad with prompting fuel system impermeability, this fuel system leak-checking apparatus is simple in structure, can effectively realize the bubble-tight detection to fuel system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of fuel system leak-checking apparatus that Fig. 1 provides for the embodiment of the present application;
The structural representation of a kind of fuel system leak-checking apparatus that Fig. 2 provides for the embodiment of the present application;
The structural representation of another fuel system leak-checking apparatus that Fig. 3 provides for the embodiment of the present application;
The structural representation of the 4th kind of fuel system leak-checking apparatus that Fig. 4 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The structural representation of the disclosed a kind of fuel system leak-checking apparatus of the embodiment of the present application, comprising:
Source of the gas 1, Non-return air valve 2 and pressure detecting sensor 3; Wherein,
Source of the gas 1 is for gases at high pressure are provided, and preferred, described gases at high pressure can be pressurized air, can be also compressed inert etc.
Pressure detecting sensor is connected with fuel system 4 with Non-return air valve 2 respectively, for measuring the gaseous tension of gas channel, and in Preset Time being detected in airflow line the reduction value of pressure reach preset value alarm, impermeability with prompting fuel system is bad, and staff can further detect fuel system after hearing warning;
Source of the gas 1, Non-return air valve 2 and pressure detecting sensor 3 and fuel system 4 are connected by snorkel successively;
Preferably, the gas outlet pipeline of described fuel system leak-checking apparatus (that is the pipeline, pressure detecting sensor 3 being connected with described fuel system 4) is connected with the oil-in of described fuel system 4 by link bolt.
Concrete, apply the process that described fuel system pick-up unit detects described fuel system and comprise:
Open source of the gas 1, gases at high pressure enter fuel system 4 by Non-return air valve 2 and pressure detecting sensor 3, the pressure detecting in gas channel when described pressure detecting sensor 3 reaches preset value (as being set to 800kpa, certainly be not specifically limited here, can do to adapt to according to practical application scene and adjust) time, close source of the gas 1, stop to described fuel system 4 inflations, carry out packing stage, if in Preset Time (as being set to 10 minutes, certainly be not specifically limited here, can do to adapt to according to actual conditions and adjust), the reduction value that described pressure detecting sensor 3 detects the pressure in gas channel reaches default value, described fuel system leakage is described, described pressure detecting sensor 3 can be reported to the police, with prompting staff.
A kind of fuel system leak-checking apparatus that the application provides, source of the gas is inflated to fuel system by retaining valve and pressure detecting sensor, when reaching preset value, the reduction value that Preset Time internal pressure detected when pressure detecting sensor reports to the police, bad with prompting fuel system impermeability, this fuel system leak-checking apparatus is simple in structure, can effectively realize the bubble-tight detection to fuel system.
Further, on the basis of the fuel system leak-checking apparatus shown in Fig. 1, the structural representation of the another kind of fuel system leak-checking apparatus that the embodiment of the present application provides as shown in Figure 2, also comprises leak locator 5;
After detecting described fuel system leakage, leak locator 5 is for detection of the concrete leak position of fuel system; Leak locator 5 can be independent of fuel system leak-checking apparatus and independently exist, and can be also a part for fuel system measurement mechanism, and it does not communicate with snorkel;
Preferred described leak locator 5 can be to spray instrument, for each parts to fuel system, connect and point out spraying liquid foam, whether by observation fuel system, have new bubble formation except spraying to judge the concrete leak position of fuel system, the position that is to say new bubble formation is exactly the concrete leak position of fuel system;
Preferably, if compressed inert during the gases at high pressure that source of the gas provides, so, described detector 5 can also be inert gas collection instrument, after detecting described fuel system leakage, detector 5 can be picked up to inert gas at the tie point place of all parts of fuel system, if detector 5 detects inert gas, illustrate that check point leaks, otherwise explanation check point does not leak.
The fuel oil leak detection system that the embodiment of the present application provides, when fuel system leakage being detected, further by surveying detector 5, detect the concrete leak position of fuel oil leak detection system, facilitate the location of staff to concrete leak position, improved staff's work efficiency.
The structural representation of another fuel system leak-checking apparatus that the embodiment of the present application provides as shown in Figure 3, also comprises switch 6;
Switch 6 is for controlling the open and close of gas channel, and only when switch 6 is opened, the gases at high pressure that source of the gas 1 provides just can enter fuel system 4; When fuel system is detected, when opening source of the gas, need to open and close 6, could inflate fuel system, when needs stop inflating to fuel system, as long as closing switch 6.
Preferably, described switch 6 can be arranged on the snorkel between source of the gas 1 and retaining valve 2, also can be arranged on the snorkel between retaining valve 2 and pressure detecting sensor 3.
Further, on the basis of the fuel system leak-checking apparatus shown in Fig. 3, the 4th kind of fuel system leak-checking apparatus that the embodiment of the present application provides also comprises: controller 7;
When controller 7 reaches preset value for the reduction value of gas channel pressure in Preset Time detected at described pressure detecting sensor, control described switch 6 and close, fuel system 4 is inflated stopping, having realized the robotization of switch 6 is controlled.Further improve staff's work efficiency.
Based on above-mentioned fuel system measurement mechanism, the application also provides a kind of fuel system measuring method, comprising:
Gases at high pressure in source of the gas enter described fuel system through retaining valve and pressure detecting sensor successively;
When the force value of described pressure detecting sensor reaches preset value, close source of the gas;
Described pressure detecting sensor in Preset Time being detected in gas channel the reduction value of pressure reach preset value alarm, illustrate that the impermeability of described fuel system is bad, pack into after fuel oil and can leak fuel oil.
After pressure detecting sensor is reported to the police, can be to described fuel system spraying liquid foam, to check the concrete leak position of described fuel system.
Preferably, gas in described source of the gas can be inert gas, after described pressure detecting sensor is reported to the police, when detecting the concrete leak position of fuel system, whether have inert gas leak out, to detect the concrete leak position of described fuel system if can also detect described fuel system various piece by inert gas collection instrument.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a fuel system leak-checking apparatus, is characterized in that, comprising:
The source of the gas of gases at high pressure is provided;
The retaining valve being connected with described source of the gas;
Be connected with described retaining valve with described fuel system respectively, and in Preset Time being detected in gas channel the reduction value of pressure reach the pressure detecting sensor of preset value alarm;
Described source of the gas, retaining valve, pressure detecting sensor and described fuel system are connected by snorkel successively.
2. device according to claim 1, is characterized in that, also comprises:
Detect the leak locator of the concrete leak position of described fuel system.
3. device according to claim 2, is characterized in that, described leak locator comprises to the sprinkling instrument of each parts tie point spraying liquid foam of described fuel system.
4. device according to claim 2, is characterized in that, described source of the gas comprises the source of the gas that compressed inert is provided.
5. device according to claim 4, is characterized in that, described leak locator comprises inert gas collection instrument.
6. device according to claim 1, is characterized in that, also comprises:
Be arranged on described snorkel, control the switch of the open and close of described snorkel.
7. device according to claim 6, is characterized in that, also comprises:
When described pressure detecting sensor detects in Preset Time that in gas channel, the reduction value of pressure reaches preset value, control the controller that described switch cuts out.
8. device according to claim 1, is characterized in that, the gas outlet pipeline of described fuel system leak-checking apparatus is connected with the oil-in of described fuel system by link bolt.
9. a fuel system measuring method, is characterized in that, is applied to fuel system measurement mechanism, and described device comprises: source of the gas, retaining valve and pressure detecting sensor; Described method comprises:
Gases at high pressure in source of the gas enter described fuel system through retaining valve and pressure detecting sensor successively;
When the force value of described pressure detecting sensor reaches preset value, close source of the gas;
Described pressure detecting sensor in Preset Time being detected in gas channel the reduction value of pressure reach preset value alarm.
10. method according to claim 9, is characterized in that, the gas in described source of the gas is inert gas, and corresponding, described method also comprises:
By inert gas collection instrument, detect inert gas, to detect the concrete leak position of described fuel system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210365077.XA CN103674444A (en) | 2012-09-26 | 2012-09-26 | Fuel oil system leak detection device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210365077.XA CN103674444A (en) | 2012-09-26 | 2012-09-26 | Fuel oil system leak detection device and method |
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| CN103674444A true CN103674444A (en) | 2014-03-26 |
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| CN201210365077.XA Pending CN103674444A (en) | 2012-09-26 | 2012-09-26 | Fuel oil system leak detection device and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105352677A (en) * | 2015-11-18 | 2016-02-24 | 重庆长安汽车股份有限公司 | Sealing testing apparatus of power battery pack |
| CN105699021A (en) * | 2016-01-13 | 2016-06-22 | 江西昌河汽车有限责任公司 | Vehicle fuel evaporation system air tightness detection method |
| CN105806571A (en) * | 2016-05-20 | 2016-07-27 | 斯丹德汽车***（苏州）有限公司 | Car-mounted fuel system leakage detecting module and detecting method thereof |
| CN105890845A (en) * | 2015-11-24 | 2016-08-24 | 上海江南长兴重工有限责任公司 | Pipeline high strength and tightness test fixture and method |
| CN106840546A (en) * | 2017-03-30 | 2017-06-13 | 中国航空工业集团公司西安飞机设计研究所 | A kind of aircraft fuel oil leak detection system and method |
| US20190093826A1 (en) * | 2017-09-22 | 2019-03-28 | Toyota Jidosha Kabushiki Kaisha | Device equipped with tank |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352677A (en) * | 2015-11-18 | 2016-02-24 | 重庆长安汽车股份有限公司 | Sealing testing apparatus of power battery pack |
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| CN105806571B (en) * | 2016-05-20 | 2019-03-08 | 斯丹德汽车***（苏州）有限公司 | Vehicle-mounted fuel systems leak detection module and its detection method |
| CN106840546A (en) * | 2017-03-30 | 2017-06-13 | 中国航空工业集团公司西安飞机设计研究所 | A kind of aircraft fuel oil leak detection system and method |
| US20190093826A1 (en) * | 2017-09-22 | 2019-03-28 | Toyota Jidosha Kabushiki Kaisha | Device equipped with tank |
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| CN109538936B (en) * | 2017-09-22 | 2020-11-03 | 丰田自动车株式会社 | Device equipped with a tank |
| US10935186B2 (en) * | 2017-09-22 | 2021-03-02 | Toyota Jidosha Kabushiki Kaisha | Device equipped with tank |
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Application publication date: 20140326 |