CN110849560A - Water tank liner leakage detection system and method - Google Patents
Water tank liner leakage detection system and method Download PDFInfo
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- CN110849560A CN110849560A CN201911197612.3A CN201911197612A CN110849560A CN 110849560 A CN110849560 A CN 110849560A CN 201911197612 A CN201911197612 A CN 201911197612A CN 110849560 A CN110849560 A CN 110849560A
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- water tank
- inner container
- gas
- characteristic parameters
- leakage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
Abstract
The invention relates to a leakage detecting system and method for a liner of a water tank, wherein the system comprises the following components: the sealing device is internally provided with a closed space and is used for sealing the water tank inner container to be tested; the inflation device is used for inflating and sealing the trace gas into the water tank inner container; the detection device is used for detecting characteristic parameters of the gas in the closed space; and the controller is used for judging whether the inner container of the water tank has a leakage point or not according to the change condition of the characteristic parameters in a preset time length. According to the technical scheme provided by the invention, the characteristic parameters of the gas in the closed space are detected by filling the tracer gas into the water tank liner sealed in the closed space and sealing, and whether the water tank liner has a leakage point is judged according to the change condition of the characteristic parameters in the preset time, so that the automatic detection of the tightness of the water tank liner is realized.
Description
Technical Field
The invention belongs to the technical field of water tank liner detection, and particularly relates to a water tank liner leakage detection system and method.
Background
In the production process of the water tank, the tightness test of the inner container usually adopts a submerged bubble test method. The method comprises the steps of putting a finished product of the inner container into water, filling 1MPa of compressed air into the inner container, maintaining the pressure for 1min, and manually observing whether bubbles are generated at a welding part to judge whether the inner container of the water tank has welding leakage. The traditional operation mode has many adverse factors, such as large human input, high labor intensity, poor leak detection reliability, low efficiency and the like.
Disclosure of Invention
In view of the above, the invention aims to provide a water tank liner leakage detection system and method, so as to solve the problems of high labor input, high labor intensity, poor leakage detection reliability and low efficiency in the prior art of manual leakage detection of a water tank liner.
According to a first aspect of the embodiments of the present invention, there is provided a tank liner leak detection system, including:
the sealing device is internally provided with a closed space and is used for sealing the water tank inner container to be tested;
the inflation device is used for inflating and sealing the trace gas into the water tank inner container;
the detection device is used for detecting characteristic parameters of the gas in the closed space;
and the controller is used for judging whether the inner container of the water tank has a leakage point or not according to the change condition of the characteristic parameters in a preset time length.
Preferably, the system further comprises:
the manipulator is used for sealing the water tank inner container to be detected on the production line into the sealing device;
and the sliding platform is used for supporting the manipulator to slide so that the manipulator can hold the inner water tank to be tested and slide to a specified sealing device for sealing under the control of the controller.
Preferably, the sealing device is provided with an exhaust hood for exhausting the detected gas.
Preferably, the system further comprises:
and the leak detector is used for positioning leakage points of the welding line of the water tank liner.
Preferably, the leak detector comprises:
the annular guide rail with the sliding block is driven by a cylinder and is arranged at the periphery of the inner container of the water tank to be detected;
and the leakage detection cover box is fixed on the sliding block, covers the welding line to be detected simultaneously, is used for detecting the characteristic parameters of the gas in the covered space, judges whether leakage points exist on the welding line in the covered space according to the change condition of the characteristic parameters in the preset time, and marks the leakage points when the leakage points exist.
According to a second aspect of the embodiment of the invention, a leakage detection method for a liner of a water tank is provided, which comprises the following steps:
filling tracer gas into a water tank inner container sealed in a closed space and sealing;
detecting characteristic parameters of the gas in the closed space;
and judging whether the inner container of the water tank has a leakage point or not according to the change condition of the characteristic parameters within the preset time.
Preferably, the characteristic parameters include: gas concentration, and/or gas pressure.
Preferably, the judging whether the tank liner has a leakage point includes:
if the characteristic parameters are not changed within the preset time, judging that no leakage point exists in the inner container of the water tank; and/or the presence of a gas in the gas,
and if the characteristic parameters change within the preset time, judging that the inner container of the water tank has a leakage point.
Preferably, the method further comprises:
calculating the change rate of the characteristic parameters;
and calculating the leakage amount of the inner container of the detected water tank within a preset time according to the change rate.
Preferably, the method further comprises:
and positioning leakage points of the welding line of the water tank liner by using a leak detector.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the technical scheme provided by the invention has the advantages that the labor input is low, the leak detection reliability is high, the efficiency is high, the user experience is good, and the satisfaction is high.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic block diagram illustrating a tank liner leak detection system in accordance with an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating the construction of a liner leak detection system for a water tank in accordance with one exemplary embodiment;
FIG. 3 is a side view of a sealing device shown in accordance with an exemplary embodiment;
FIG. 4 is a front view of a leak detector shown in accordance with an exemplary embodiment;
FIG. 5 is a flow chart illustrating a method of leak detection of a tank liner in accordance with an exemplary embodiment;
FIG. 6 is a flow chart illustrating a method of leak detection of a tank liner in accordance with another exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
FIG. 1 is a schematic block diagram illustrating a liner leak detection system for a water tank, as shown in FIG. 1, in accordance with an exemplary embodiment, the system comprising:
the sealing device 1 is internally provided with a closed space and is used for sealing the inner container of the water tank to be tested;
the inflation device 2 is used for inflating trace gas into the water tank inner container and sealing the water tank inner container;
the detection device 3 is used for detecting characteristic parameters of the gas in the closed space;
and the controller 4 is used for judging whether the inner container of the water tank has a leakage point or not according to the change condition of the characteristic parameters in a preset time length.
Preferably, the tracer gas is a nitrogen-hydrogen mixture of 5% hydrogen and 95% nitrogen, and the nitrogen-hydrogen mixture of 5% hydrogen and 95% nitrogen is not flammable and is a completely safe gas (a non-flammable safe gas according to international standard ISO10156: 2010) because the 5% concentration hydrogen is non-flammable according to the actual ignition test.
Preferably, the characteristic parameters include: gas concentration, and/or gas pressure.
Preferably, the detection device comprises: a gas concentration sensor, and/or a gas pressure sensor.
Note that, in order to ensure the accuracy of the detection result and prevent gas leakage from the sealed space, the gas concentration sensor and/or a housing of the gas pressure sensor (a housing connected to the sensor probe) are sealed in the sealed space.
Preferably, the controller includes but is not limited to: singlechip, microprocessor, PLC controller, DSP controller, FPGA controller etc..
The controller judges whether the inner water tank container has a leakage point or not, and comprises the following steps:
if the characteristic parameters are not changed within the preset time, judging that no leakage point exists in the inner container of the water tank; and/or the presence of a gas in the gas,
and if the characteristic parameters change within the preset time, judging that the inner container of the water tank has a leakage point.
The preset duration is set according to the user requirement, for example, set to 1 min.
It can be understood that, when there is a leakage point in the measured tank liner, the leaked trace gas mixes with the gas in the enclosed space, resulting in the gas concentration (or gas pressure) in the enclosed space rising, the gas concentration (or gas pressure) detected by the gas concentration sensor (or gas pressure sensor) will rise, the faster the rising speed, the larger the leakage amount, in view of the above, the existence of the leakage point is determined, and the size and the number of the leakage point are estimated according to the size of the leakage amount.
Therefore, the controller judges whether the inner container of the water tank has a leakage point or not, and takes the characteristic parameter as the gas concentration as an example, and the method specifically comprises the following steps: if the gas concentration does not change within the preset time, judging that the inner container of the water tank to be detected has no leakage point, otherwise, judging that the inner container of the water tank to be detected has the leakage point.
It can be understood that, according to the technical scheme provided by this embodiment, the characteristic parameter of the gas in the sealed space is detected by filling the trace gas into the water tank liner sealed in the sealed space and sealing the water tank liner, and whether the water tank liner has a leakage point is determined according to the change condition of the characteristic parameter in the preset time period, so that the automatic detection of the tightness of the water tank liner is realized.
Referring to fig. 2, preferably, the system further comprises:
the manipulator 5 is used for sealing the water tank inner container to be detected on the production line into the sealing device;
and the sliding platform 6 is used for supporting the manipulator 5 to slide so that the manipulator 5 clamps the inner water tank to be tested and slides to the specified sealing device 1 to be sealed under the control of the controller.
It can be understood that the manipulator is used for reducing human input and labor intensity, so that the tightness of the water tank inner container is more intelligently detected, and the user experience is improved.
Referring to fig. 3, preferably, an exhaust hood 7 is disposed on the sealing device 1 for exhausting the detected gas.
Preferably, the exhaust hood 7 is provided with an exhaust hole, and the detected gas can be recycled through a gas recovery device, so that the detection cost is reduced.
Referring to fig. 4, preferably, the system further comprises:
and the leak detector is used for positioning leakage points of the welding line of the water tank liner.
Preferably, the leak detector comprises:
the annular guide rail 8 with a slide block is driven by a cylinder and is arranged at the periphery of the inner container of the tested water tank;
and the leakage detection cover box 9 is fixed on the sliding block, covers the welding line to be detected and is used for detecting the characteristic parameters of the gas in the covered space, judging whether leakage points exist on the welding line in the covered space or not according to the change condition of the characteristic parameters in the preset time, and marking the leakage points when the leakage points exist.
It can be understood that the annular guide rail is arranged at the periphery of the tested water tank liner and arranged along the annular welding line, and when the slide block slides along the annular guide rail under the driving of the cylinder, the slide block drives the leakage detection cover box to slide along the annular welding line, so that the positioning of leakage points on the annular welding line of the water tank liner is realized.
It can be understood that, when the controller judges that the water tank inner bag has the leak source, the rethread leak detector carries out the leak source location, provides reliable foundation for the maintenance of leak source, can save the work load of producing line staff leak source location, and the staff is produced to the help and fixes a position the leak source rapidly, and the maintenance and the change of the product of being convenient for can improve product quality, improve user satisfaction.
FIG. 5 is a flow chart illustrating a method for leak detection of a tank liner, as shown in FIG. 5, in accordance with an exemplary embodiment, the method comprising:
step S11, filling trace gas into the water tank inner container sealed in a closed space and sealing;
step S12, detecting characteristic parameters of the gas in the closed space;
and step S13, judging whether the inner container of the water tank has a leakage point or not according to the change condition of the characteristic parameters in a preset time length.
It should be noted that the technical solution provided in this embodiment is applicable to a liner tightness detection system or a leak detection system on a production line.
It can be understood that, according to the technical scheme provided by this embodiment, the characteristic parameter of the gas in the sealed space is detected by filling the trace gas into the water tank liner sealed in the sealed space and sealing the water tank liner, and whether the water tank liner has a leakage point is determined according to the change condition of the characteristic parameter in the preset time period, so that the automatic detection of the tightness of the water tank liner is realized.
Preferably, the characteristic parameters include: gas concentration, and/or gas pressure.
Preferably, the judging whether the tank liner has a leakage point includes:
if the characteristic parameters are not changed within the preset time, judging that no leakage point exists in the inner container of the water tank; and/or the presence of a gas in the gas,
and if the characteristic parameters change within the preset time, judging that the inner container of the water tank has a leakage point.
Preferably, the method further comprises:
calculating the change rate of the characteristic parameters;
and calculating the leakage amount of the inner container of the detected water tank within a preset time according to the change rate.
The preset duration is set according to the user requirement, for example, set to 1 min.
It can be understood that, when there is a leakage point in the measured tank liner, the leaked trace gas mixes with the gas in the enclosed space, resulting in the gas concentration (or gas pressure) in the enclosed space rising, the gas concentration (or gas pressure) detected by the gas concentration sensor (or gas pressure sensor) will rise, the faster the rising speed, the larger the leakage amount, in view of the above, the existence of the leakage point is determined, and the size and the number of the leakage point are estimated according to the size of the leakage amount.
Therefore, the controller judges whether the inner container of the water tank has a leakage point or not, and takes the characteristic parameter as the gas concentration as an example, and the method specifically comprises the following steps: if the gas concentration does not change within the preset time, judging that the inner container of the water tank to be detected has no leakage point, otherwise, judging that the inner container of the water tank to be detected has the leakage point.
Preferably, the method further comprises:
and positioning leakage points of the welding line of the water tank liner by using a leak detector.
Preferably, the leak detector comprises:
the annular guide rail with the sliding block is driven by a cylinder and is arranged at the periphery of the inner container of the water tank to be detected;
and the leakage detection cover box is fixed on the sliding block, covers the welding line to be detected simultaneously, is used for detecting the characteristic parameters of the gas in the covered space, judges whether leakage points exist on the welding line in the covered space according to the change condition of the characteristic parameters in the preset time, and marks the leakage points when the leakage points exist.
It can be understood that the annular guide rail is arranged at the periphery of the tested water tank liner and arranged along the annular welding line, and when the slide block slides along the annular guide rail under the driving of the cylinder, the slide block drives the leakage detection cover box to slide along the annular welding line, so that the positioning of leakage points on the annular welding line of the water tank liner is realized.
It can be understood that, when the controller judges that the water tank inner bag has the leak source, the rethread leak detector carries out the leak source location, provides reliable foundation for the maintenance of leak source, can save the work load of producing line staff leak source location, and the staff is produced to the help and fixes a position the leak source rapidly, and the maintenance and the change of the product of being convenient for can improve product quality, improve user satisfaction.
FIG. 6 is a flow chart illustrating a method for leak detection of a tank liner in accordance with another exemplary embodiment, as shown in FIG. 6, the method comprising:
step S21, filling trace gas into the water tank inner container sealed in a closed space and sealing;
step S22, detecting characteristic parameters of the gas in the closed space;
step S23, if the characteristic parameters are not changed within a preset time, judging that no leakage point exists in the inner container of the water tank; and if the characteristic parameters change within the preset time, judging that the inner container of the water tank has a leakage point.
It should be noted that the technical solution provided in this embodiment is applicable to a liner tightness detection system or a leak detection system on a production line.
It can be understood that, according to the technical scheme provided by this embodiment, the characteristic parameter of the gas in the sealed space is detected by filling the trace gas into the water tank liner sealed in the sealed space and sealing the water tank liner, and whether the water tank liner has a leakage point is determined according to the change condition of the characteristic parameter in the preset time period, so that the automatic detection of the tightness of the water tank liner is realized.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A water tank inner container leak detection system is characterized by comprising:
the sealing device is internally provided with a closed space and is used for sealing the water tank inner container to be tested;
the inflation device is used for inflating and sealing the trace gas into the water tank inner container;
the detection device is used for detecting characteristic parameters of the gas in the closed space;
and the controller is used for judging whether the inner container of the water tank has a leakage point or not according to the change condition of the characteristic parameters in a preset time length.
2. The system of claim 1, further comprising:
the manipulator is used for sealing the water tank inner container to be detected on the production line into the sealing device;
and the sliding platform is used for supporting the manipulator to slide so that the manipulator can hold the inner water tank to be tested and slide to a specified sealing device for sealing under the control of the controller.
3. The system of claim 1,
and the sealing device is provided with an exhaust hood for exhausting the detected gas.
4. The system of claim 1, further comprising:
and the leak detector is used for positioning leakage points of the welding line of the water tank liner.
5. The system of claim 4, wherein the leak detector comprises:
the annular guide rail with the sliding block is driven by a cylinder and is arranged at the periphery of the inner container of the water tank to be detected;
and the leakage detection cover box is fixed on the sliding block, covers the welding line to be detected simultaneously, is used for detecting the characteristic parameters of the gas in the covered space, judges whether leakage points exist on the welding line in the covered space according to the change condition of the characteristic parameters in the preset time, and marks the leakage points when the leakage points exist.
6. A water tank inner container leakage detection method is characterized by comprising the following steps:
filling tracer gas into a water tank inner container sealed in a closed space and sealing;
detecting characteristic parameters of the gas in the closed space;
and judging whether the inner container of the water tank has a leakage point or not according to the change condition of the characteristic parameters within the preset time.
7. The method of claim 6,
the characteristic parameters comprise: gas concentration, and/or gas pressure.
8. The method of claim 6, wherein said determining if a leak exists in said tank liner comprises:
if the characteristic parameters are not changed within the preset time, judging that no leakage point exists in the inner container of the water tank; and/or the presence of a gas in the gas,
and if the characteristic parameters change within the preset time, judging that the inner container of the water tank has a leakage point.
9. The method of claim 8, further comprising:
calculating the change rate of the characteristic parameters;
and calculating the leakage amount of the inner container of the detected water tank within a preset time according to the change rate.
10. The method of claim 6, further comprising:
and positioning leakage points of the welding line of the water tank liner by using a leak detector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197612.3A CN110849560A (en) | 2019-11-29 | 2019-11-29 | Water tank liner leakage detection system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911197612.3A CN110849560A (en) | 2019-11-29 | 2019-11-29 | Water tank liner leakage detection system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912577A (en) * | 2020-08-18 | 2020-11-10 | 广州小鹏汽车科技有限公司 | Detection method and device |
| CN112085713A (en) * | 2020-08-28 | 2020-12-15 | 格力电器（芜湖）有限公司 | Method, device, equipment and system for automatically detecting leakage point |
| CN114623391A (en) * | 2022-04-11 | 2022-06-14 | 广州燃气集团有限公司 | Method for positioning leakage position of gas pipeline |
| CN115265935A (en) * | 2021-04-30 | 2022-11-01 | 宁德时代新能源科技股份有限公司 | Leakage detection method and system for box body |
-
2019
- 2019-11-29 CN CN201911197612.3A patent/CN110849560A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912577A (en) * | 2020-08-18 | 2020-11-10 | 广州小鹏汽车科技有限公司 | Detection method and device |
| CN112085713A (en) * | 2020-08-28 | 2020-12-15 | 格力电器（芜湖）有限公司 | Method, device, equipment and system for automatically detecting leakage point |
| CN115265935A (en) * | 2021-04-30 | 2022-11-01 | 宁德时代新能源科技股份有限公司 | Leakage detection method and system for box body |
| CN114623391A (en) * | 2022-04-11 | 2022-06-14 | 广州燃气集团有限公司 | Method for positioning leakage position of gas pipeline |
| CN114623391B (en) * | 2022-04-11 | 2023-11-21 | 广州燃气集团有限公司 | Positioning method for leakage position of gas pipeline |
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