An automatic fuel system air tightness detection device
By using an automatic fuel system airtightness testing device, which utilizes pressure sensors and an automatic pressure controller working together, the operational difficulties and inconsistent results of fuel system airtightness testing have been solved, achieving convenient and consistent airtightness testing.
Patent Information
- Application Number
- CN202520080009.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-14
AI Technical Summary
The existing fuel system airtightness testing process is difficult and the test results are inconsistent. It requires multiple people to work together, which is inefficient and wastes a lot of test gas, resulting in poor product consistency.
An automatic fuel system air tightness detection device is adopted, which uses a first pressure sensor, an automatic pressure controller and a pressure reduction sensor to achieve automatic adjustment and control of air pressure, ensuring that the air pressure is stable at the target value, simplifying the operation process and ensuring test consistency.
It improves the ease of operation and consistency of test results in fuel system airtightness testing, reduces operational difficulty and gas waste, and ensures consistent testing conditions for different testers.
Smart Images
Figure CN223611050U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fuel system test frock technical field, specifically, relate to a kind of automatic fuel system air tightness detection device. BACKGROUND
[0002] In fuel system air tightness detection test, fuel system needs certain pressure, traditional air tightness test uses artificial observation pressure gauge reading, manually adjusts air inlet pressure reducing valve, and closes valve when pressure reaches target value, due to the special structure of fuel system, resulting in more tank interfaces, air tightness detection is difficult, and fuel system itself cannot withstand large pressure, resulting in detection process needs at least 2 or more cooperation, when encountering leakage point, manually aerating process needs to be repeated several times to complete the entire test process, test process is inefficient, test gas is wasted, and different test personnel will produce different test results, resulting in poor product consistency. SUMMARY
[0003] The utility model solves the technical problem of how to improve the technical problem of difficulty in execution and poor consistency of test results in the prior art.
[0004] The embodiment of the utility model can be implemented as follows:
[0005] The utility model provides a kind of automatic fuel system air tightness detection device, for detecting the air tightness of fuel system, the first pressure sensor of detecting its internal air pressure is provided on the fuel system, and the automatic fuel system air tightness detection device includes:
[0006] Aeration assembly, including aeration channel and being sequentially arranged on the aeration channel switch valve, pressure reducing valve, pressure reducing pressure sensor, automatic pressure controller, aeration solenoid valve and check valve;The two ends of the aeration channel have first interface, and one of the first interface is used to access gas source, and the other first interface is used to access the fuel system;
[0007] Control device, including control body and operating body;The control body is electrically connected with the first pressure sensor;The control body is electrically connected with the aeration solenoid valve, and the control body is used to control the aeration solenoid valve to close when the first pressure sensor detects that the air pressure in the fuel system reaches air pressure target value;The pressure reducing pressure sensor and the automatic pressure controller are electrically connected with the control body;The operating body is used to input the air pressure target value;The automatic pressure controller is used to adjust the air pressure in the aeration channel based on the pressure data detected by the pressure reducing pressure sensor.
[0008] Optionally, the inflating assembly further comprises a safety valve and a first discharge channel; the safety valve is connected to the inflating channel, and the safety valve is located between the pressure relief valve and the switch valve; the first discharge channel is connected to the inflating channel and is located between the switch valve and the pressure relief valve.
[0009] Optionally, the first discharge channel is provided with a first discharge valve and a first silencer.
[0010] Optionally, the inflating assembly further comprises an impurity filter, which is arranged on the inflating channel and is located between the switch valve and the first interface.
[0011] Optionally, the inflating assembly further comprises a second pressure sensor, which is connected to the inflating channel and is located between the switch valve and the pressure relief valve, and the second pressure sensor is used for detecting the gas pressure of the gas source.
[0012] Optionally, the inflating assembly further comprises a second discharge channel, which is connected to the inflating channel and is connected between the inflating electromagnetic valve and the one-way valve; the second discharge channel is used for discharging the gas in the inflating channel.
[0013] Optionally, the second discharge channel is provided with an automatic exhaust valve and a manual exhaust valve in parallel; and the end of the second discharge channel is further provided with a second silencer.
[0014] Optionally, the automatic fuel system airtightness detection device further comprises an adapter pipe; both ends of the adapter pipe are provided with second interfaces, one of the second interfaces is used for connecting the first interface close to the one-way valve, and the other second interface is used for connecting the fuel system.
[0015] The beneficial effects of the automatic fuel system airtightness detection device provided by the utility model relative to the prior art include:
[0016] When the automatic fuel system air tightness detection device is used to perform air tightness detection of the fuel system, the first interface and the second interface are connected to the gas source and the fuel system respectively, the operator can issue an instruction to determine the target air pressure value by operating the main body, and after inputting the target air pressure value, the control main body controls the opening of the switch valve and the inflation electromagnetic valve to inflate the gas into the fuel system. Based on this, the convenience of operation can be realized, and the operation difficulty is reduced. In addition, during the inflation process, based on the pressure data detected by the pressure reducing pressure sensor, the automatic pressure controller adjusts the air pressure in the inflation channel until the air pressure in the inflation channel stabilizes at the target air pressure value, so as to inflate the air pressure in the fuel system to the target air pressure value. Therefore, through the cooperation of the automatic pressure controller and the pressure reducing pressure sensor, even if different testers perform the test, the air tightness test can be completed under the same conditions to ensure the consistency of the test results. Based on this, the automatic fuel system air tightness detection device can improve the technical problems of difficulty in execution and poor consistency of test results in the prior art. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Figure 1 The structure diagram of the automatic fuel system air tightness detection device provided in the embodiments of the present application.
[0019] Icon: automatic fuel system air tightness detection device 10, fuel system 11, first pressure sensor 12, inflation assembly 100, switch valve 110, pressure reducing valve 120, pressure reducing pressure sensor 130, automatic pressure controller 140, inflation electromagnetic valve 150, one-way valve 160, first interface 170, safety valve 181, first exhaust passage 182, first exhaust valve 1821, first silencer 1822, impurity filter 190, second pressure sensor 101, second exhaust passage 102, automatic exhaust valve 1021, manual exhaust valve 1022, second silencer 1023, control device 200, control main body 210, operation main body 220, adapter pipe 300, second interface 310. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0022] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0023] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.
[0024] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0025] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0026] Please refer to Figure 1 The automatic fuel system air tightness detection device 10 provided in the present embodiment is used for detecting the air tightness of the fuel system 11. The automatic fuel system air tightness detection device 10 can be connected between the gas source and the fuel system 11, and is used for guiding the gas in the gas source into the fuel system 11. The automatic fuel system air tightness detection device 10 can improve the technical problems of difficulty in execution and poor consistency of test results in the prior art.
[0027] It is worth noting that the fuel system 11 has a first pressure sensor 12 for detecting the internal gas pressure.
[0028] In the embodiment, the automatic fuel system airtightness detection device 10 comprises a charging assembly 100 and a control device 200. The charging assembly 100 comprises a charging channel and a switch valve 110, a pressure reducing valve 120, a pressure reducing pressure sensor 130, an automatic pressure controller 140, a charging solenoid valve 150 and a one-way valve 160 arranged in sequence on the charging channel; the charging channel has two first interfaces 170, one of which is used to access a gas source and the other is used to access the fuel system 11. When the switch valve 110 and the charging solenoid valve 150 are both open, the gas can pass through the switch valve 110, the pressure reducing valve 120, the pressure reducing pressure sensor 130, the automatic pressure controller 140, the charging solenoid valve 150 and the one-way valve 160 in sequence during the process of passing through the charging channel, and then be charged into the fuel system 11. The control device 200 comprises a control body 210 and an operation body 220; the control body 210 is electrically connected with the first pressure sensor 12 to obtain the first pressure data detected by the first pressure sensor 12; the control body 210 is electrically connected with the charging solenoid valve 150, and the control body 210 is used to control the charging solenoid valve 150 to close when the first pressure sensor 12 detects that the pressure in the fuel system 11 reaches the pressure target value, that is, the control body 210 is used to control the charging solenoid valve 150 to close when the pressure value represented by the first pressure data reaches the gas pressure target value. The pressure reducing pressure sensor 130 and the automatic pressure controller 140 are both electrically connected with the control body 210. The operation body is used to input the gas pressure target value; the automatic pressure controller is used to adjust the gas pressure in the charging channel based on the pressure data detected by the pressure reducing pressure sensor. In other words, the control body 210 is used to send the gas pressure target value to the automatic pressure controller 140 according to the instruction sent by the operation body 220, the control body 210 is also used to obtain the second pressure data in the charging channel detected by the pressure reducing pressure sensor 130, and is also used to send the second pressure data to the automatic pressure controller 140; the automatic pressure controller 140 is used to adjust the gas pressure in the charging channel based on the second pressure data until the gas pressure in the charging channel reaches the gas pressure target value. Wherein, Figure 1 The dashed line in the figure represents an electrical connection relationship.
[0029] When the automatic fuel system air tightness detection device 10 is used to perform air tightness detection of the fuel system 11, the first interface 170 and the second interface 310 are connected to the gas source and the fuel system 11 respectively, the operator can issue an instruction to determine the target gas pressure value by operating the main body 220, and after inputting the target gas pressure value, the control body 210 controls the opening of the switch valve 110 and the inflation solenoid valve 150 to inflate the fuel system 11 with gas. Based on this, the operation can be facilitated and the operation difficulty can be reduced. In addition, during the inflation process, based on the second pressure data detected by the pressure reducing pressure sensor 130, the automatic pressure controller 140 adjusts the gas pressure in the inflation channel until the gas pressure in the inflation channel stabilizes at the target gas pressure value, so as to facilitate the inflation of the fuel system 11 to the target gas pressure value; thereby, through the cooperation of the automatic pressure controller 140 and the pressure reducing pressure sensor 130, the same conditions can be ensured to complete the air tightness test even if different testers perform the test, and the consistency of the test results can be ensured. Based on this, the automatic fuel system air tightness detection device 10 can improve the technical problems of difficulty in execution and poor consistency of test results in the prior art.
[0030] The operation body 220 can be a touch operation device, such as a touch screen or a touch panel. Of course, the operation body 220 can also be a smart terminal, a tablet computer, or an industrial computer. The operation body 220 can issue an instruction to determine the target gas pressure value by inputting the target gas pressure value on the operation body 220 through touch, or by voice interaction. After the control body 210 obtains the instruction issued by the operation body 220, the operation body 220 sends the target gas pressure value to the automatic pressure controller 140. It should be noted that the control body 210 can interact with the automatic pressure controller, so that the automatic pressure controller can adjust the gas pressure in the inflation channel behind the pressure reducing valve 120 based on the second pressure data and the target gas pressure value, so that the inflation channel can stably inflate the fuel system 11 with gas at a gas pressure maintained at the target gas pressure value. In addition, the control body 210 can be a programmable logic controller.
[0031] Alternatively, the automatic pressure controller 140 can use a controller in the prior art, for example, an OHR-A100 series pressure controller. Similarly, the control body 210 can use a Siemens smart200. It should be understood that the automatic pressure controller 140 and the control body 210 can also use the same type of existing products, which will not be described here.
[0032] Further, when the first pressure sensor 12 detects that the gas pressure in the fuel system 11 reaches the target gas pressure value, the control body 210 controls the inflation solenoid valve 150 to close, and the inflation of the fuel system 11 is completed.
[0033] After the filling of gas in the fuel system 11 is completed, the change of the gas pressure in the fuel system 11 can be determined based on the gas pressure detected by the first pressure sensor 12 after a period of time, and if the change is within a preset range, it indicates that the air tightness of the fuel system 11 is good. Otherwise, it indicates that the air tightness of the fuel system 11 is poor.
[0034] Optionally, in the embodiment, the gas filling assembly 100 further comprises a safety valve 181 and a first discharge channel; the safety valve 181 is connected to the gas filling channel, and the safety valve 181 is located between the pressure relief valve 120 and the switch valve 110; the first discharge channel is connected to the gas filling channel and is located between the switch valve 110 and the pressure relief valve 120. By providing the safety valve 181, it can be ensured that the gas pressure in the gas filling channel cannot exceed a preset gas pressure, the internal components of the device can be protected from damage, and the safety of the operator can be ensured. In addition, by providing the first discharge channel, when the gas pressure exceeds a certain limit, part of the gas can be discharged through the first discharge channel to ensure that the gas pressure in the gas filling channel is maintained within a safe limit, thereby improving safety.
[0035] Optionally, in the embodiment, the first discharge channel is provided with a first discharge valve 1821 and a first silencer 1822. The first discharge valve 1821 is used to control the opening and closing of the first discharge channel, so as to control the first discharge channel to be turned on to discharge part of the gas when the gas pressure in the gas filling channel is higher than the safe limit, so as to maintain the gas pressure in the gas filling channel within the safe limit. The first silencer 1822 is used to eliminate the sound of the discharged gas.
[0036] In the embodiment, the gas filling assembly 100 further comprises an impurity filter 190, which is arranged on the gas filling channel and is located between the switch valve 110 and the first interface 170. By filtering the impurities in the gas through the impurity filter 190, it can be avoided that the impurities enter the fuel system 11 and cause the impurities to accumulate inside the fuel system 11.
[0037] In the embodiment, the gas filling assembly 100 further comprises a second pressure sensor 101, which is connected to the gas filling channel and is located between the switch valve 110 and the pressure relief valve 120, and the second pressure sensor 101 is used to detect the gas pressure of the gas source. The second pressure sensor 101 and the first discharge valve 1821 are both electrically connected to the control body 210. The control body 210 can control the opening and closing of the first discharge valve 1821 based on the gas pressure detected by the pressure sensor. When the pressure sensor detects that the gas pressure output by the gas source exceeds a safe limit, the control body 210 controls the first discharge valve 1821 to open to discharge part of the gas, so as to ensure that the gas pressure in the gas filling channel is maintained within the safe limit. In this way, the automatic control of the first discharge channel can be realized.
[0038] In the embodiment, the inflating assembly 100 further comprises a second discharge channel 102, which accesses the inflating channel and is between the inflating solenoid valve 150 and the one-way valve 160; the second discharge channel 102 is used to discharge the gas in the inflating channel. After the completion of the inflating of the fuel system 11, the first interface 170 is detached from the fuel system 11, at this time, the gas in the inflating channel can be discharged through the second discharge channel 102.
[0039] It should be understood that in other embodiments, the second discharge channel 102 can also be cancelled, and in other embodiments, the gas in the inflating channel can also be discharged through the first discharge channel.
[0040] Further, in the embodiment, the second discharge channel 102 is provided with a parallel automatic exhaust valve 1021 and a manual exhaust valve 1022; and the end of the second discharge channel 102 is further provided with a second silencer 1023. The automatic exhaust valve 1021 can be electrically connected with the control body 210, after the completion of the inflating of the fuel system 11, the control body 210 can automatically control the opening of the automatic exhaust valve 1021, to realize the automatic control of the exhaust. Of course, in some cases, the operator can also manually operate the manual control valve to complete the discharge of the gas in the inflating channel. The second silencer 1023 is used to eliminate the noise of the exhaust.
[0041] It should be understood that in other embodiments, one of the manual solenoid valve and the automatic solenoid valve can also be cancelled.
[0042] In the embodiment, the automatic fuel system air tightness detection device 10 further comprises an adapter pipe 300; both ends of the adapter pipe 300 are provided with a second interface 310, one of which is used to access the first interface 170 close to the one-way valve 160; the other is used to access the fuel system 11. It is worth noting that the second interface 310 corresponding to the fuel system 11 can be replaced according to the actual interface of the fuel system 11, thereby when facing different models and different interfaces of the fuel system 11, only the adapter pipe 300 needs to be replaced to complete the conduction of the inflating assembly 100 and the fuel system 11, which can improve the application range of the automatic fuel system air tightness detection device 10.
[0043] In summary, in the automatic fuel system air tightness detection device 10 provided in the embodiment, an operator can issue an instruction through the operation main body 220 to determine the air pressure target value, and after inputting the air pressure target value, the control main body 210 controls the opening of the switch valve 110 and the inflation electromagnetic valve 150 to inflate the fuel system 11 with gas. Based on this, the operation can be facilitated and the operation difficulty can be reduced. In addition, during the inflation process, based on the second pressure data detected by the pressure reduction pressure sensor 130, the automatic pressure controller 140 adjusts the air pressure in the inflation channel until the air pressure in the inflation channel stabilizes at the air pressure target value, so as to facilitate the inflation of the fuel system 11 to the air pressure target value; thus, through the cooperation of the automatic pressure controller 140 and the pressure reduction pressure sensor 130, even if different testers perform the test, the air tightness test can be completed under the same conditions, and the consistency of the test results can be ensured. Based on this, the automatic fuel system air tightness detection device 10 can improve the technical problems of difficulty in execution and poor consistency of test results in the prior art.
[0044] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. An automatic fuel system air tightness detection device (10) for detecting air tightness of a fuel system (11) having a first pressure sensor (12) for detecting internal air pressure thereof, characterized in that, The automatic fuel system air tightness detection device (10) comprises: An inflation assembly (100) comprising an inflation channel and a switch valve (110), a pressure reducing valve (120), a pressure reducing pressure sensor (130), an automatic pressure controller (140), an inflation solenoid valve (150) and a one-way valve (160) arranged in sequence on the inflation channel; both ends of the inflation channel have a first interface (170), one of the first interfaces (170) is used to access a gas source, and the other first interface (170) is used to access the fuel system (11); A control device (200) comprising a control body (210) and an operation body (220); the control body (210) is electrically connected with the first pressure sensor (12); the control body (210) is electrically connected with the inflation solenoid valve (150), and the control body (210) is used to control the inflation solenoid valve (150) to be closed when the first pressure sensor (12) detects that the gas pressure in the fuel system (11) reaches a target gas pressure value; the pressure reducing pressure sensor (130) and the automatic pressure controller (140) are both electrically connected with the control body (210); the operation body (220) is used to input the target gas pressure value; and the automatic pressure controller (140) is used to adjust the gas pressure in the inflation channel based on the pressure data detected by the pressure reducing pressure sensor (130).
2. The automatic fuel system air leak detection apparatus (10) of claim 1, wherein, The inflation assembly (100) further comprises a safety valve (181) and a first discharge channel; the safety valve (181) accesses the inflation channel, and the safety valve (181) is located between the pressure reducing valve (120) and the switch valve (110); and the first discharge channel accesses the inflation channel and is located between the switch valve (110) and the pressure reducing valve (120).
3. The automatic fuel system air leak detection apparatus (10) of claim 2, wherein, A first discharge valve (1821) and a first silencer (1822) are arranged on the first discharge channel.
4. The automatic fuel system air leak detection apparatus (10) of claim 1, wherein, The inflation assembly (100) further comprises an impurity filter (190), which is arranged on the inflation channel and between the switch valve (110) and the first interface (170).
5. The automatic fuel system air leak detection apparatus (10) of claim 1, wherein, The inflation assembly (100) further comprises a second pressure sensor (101), which accesses the inflation channel and is arranged between the switch valve (110) and the pressure reducing valve (120), and is used to detect the gas pressure of the gas source.
6. The automatic fuel system air leak detection apparatus (10) of claim 1, wherein, The inflation assembly (100) further comprises a second discharge channel (102), which accesses the inflation channel and is arranged between the inflation solenoid valve (150) and the one-way valve (160); and the second discharge channel (102) is used to discharge the gas in the inflation channel.
7. The automatic fuel system air leak detection apparatus (10) of claim 6, wherein, The second exhaust passage (102) is provided with a parallel automatic exhaust valve (1021) and a manual exhaust valve (1022); and the end of the second exhaust passage (102) is further provided with a second muffler (1023).
8. The automatic fuel system air leak detection apparatus (10) of claim 1, wherein, The automatic fuel system airtightness detection device (10) further comprises an adapter pipe (300); both ends of the adapter pipe (300) are provided with second interfaces (310), one of which is used for connecting the first interface (170) close to the one-way valve (160); and the other is used for connecting the fuel system (11).