CN114235313A - Gas cylinder gas tightness detection method and device - Google Patents
Gas cylinder gas tightness detection method and device Download PDFInfo
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- CN114235313A CN114235313A CN202111363737.6A CN202111363737A CN114235313A CN 114235313 A CN114235313 A CN 114235313A CN 202111363737 A CN202111363737 A CN 202111363737A CN 114235313 A CN114235313 A CN 114235313A
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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
- G01M3/3236—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 by monitoring the interior space of the containers
- G01M3/3272—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 by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
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Abstract
The application provides a gas cylinder airtightness detection method and device. The method comprises the steps of inflating a gas cylinder group to obtain the gas pressure of the gas cylinder; detecting whether the air pressure of the air bottle is matched with a preset air pressure or not; and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group. In the process of detecting the air tightness of the current gas cylinder group, after gas is filled into the gas cylinder group, when the gas pressure of the gas cylinder reaches preset gas pressure, the fact that the air tightness of each gas cylinder of the current gas cylinder group is good is determined, then the gas in the current gas cylinder group is filled into the next gas cylinder group through a gas return valve and a gas inlet valve, namely the gas in the current gas cylinder group is used as a gas source of the next gas cylinder group, the gas for detecting the air tightness is reused, the gas pressurization time during detection of different gas cylinder groups is reduced, and therefore the efficiency of detecting the gas tightness of the gas cylinders is improved.
Description
Technical Field
The invention relates to the technical field of gas cylinders, in particular to a gas cylinder airtightness detection method and device.
Background
The gas cylinder can also be conveniently transported as a main containing vessel for storing gas in the process of convenient storage, has stronger transportation and storage stability, and is convenient for transportation and storage of gas. The air tightness of the gas cylinder is an important product index, and the qualification rate of the gas cylinder is directly determined. The traditional way is to pressurize and inflate the gas cylinder and detect the air pressure in the gas cylinder to determine the gas tightness problem of the gas cylinder.
However, as an inflation gas source, it is necessary to continuously inflate gas into each gas cylinder, i.e., to separately detect each gas cylinder, so that the gas tightness detection of each gas cylinder is a repeated step, and thus the gas tightness detection time of the gas cylinder is long, and further the gas tightness detection efficiency of the gas cylinder is low, which seriously affects the utilization rate of the gas cylinder.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a gas cylinder airtightness detection method and device for improving gas cylinder detection efficiency.
The purpose of the invention is realized by the following technical scheme:
a gas cylinder airtightness detection method, comprising:
inflating the gas cylinder group to obtain the gas cylinder pressure;
detecting whether the air pressure of the air bottle is matched with a preset air pressure or not;
and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group.
In one embodiment, the inflating the gas cylinder group includes: acquiring the air inlet pressure of the air bottle group; detecting whether the air inlet pressure is smaller than or equal to a preset air inlet pressure; and when the air inlet pressure is less than or equal to the preset air inlet pressure, sending a starting signal to a screw air compressor to provide air bottle air tightness detection gas for the air bottle group.
In one embodiment, the preset intake pressure is 0.5MPA to 0.8 MPA.
In one embodiment, the detecting whether the intake pressure is less than or equal to a preset intake pressure further includes: and when the air inlet pressure is greater than the preset air inlet pressure, sending a pressurization signal to the gas booster pump so as to pressurize the gas tightness detection gas of the gas cylinder.
In one embodiment, when the intake pressure is greater than the preset intake pressure, sending a pressurization signal to a gas booster pump to boost the gas for detecting the gas tightness of the gas cylinder, includes: when the air inlet pressure is greater than the preset air inlet pressure, starting the gas booster pump to obtain the inflation pressure of the air tightness detection gas of the gas cylinders filled in the gas cylinder group; detecting whether the inflation pressure is greater than or equal to a preset inflation pressure; and when the inflation air pressure is greater than or equal to the preset inflation air pressure, taking the inflation air pressure as the air pressure of the air bottle.
In one embodiment, the detecting whether the inflation pressure is greater than or equal to a preset inflation pressure further includes: and when the inflation pressure is smaller than the preset inflation pressure, sending a continuous inflation signal to the gas booster pump so as to continuously increase the pressure of the gas filled in the gas bottle group.
In one embodiment, the detecting whether the air pressure of the air cylinder matches a preset air pressure includes: detecting whether the air pressure of the air bottle is greater than or equal to the preset air pressure; and when the air pressure of the air bottle is greater than or equal to the preset air pressure, detecting whether the duration time of the air pressure of the air bottle is greater than or equal to the preset airtight time.
In one embodiment, when the gas cylinder pressure matches the preset gas pressure, opening the air return valve of the gas cylinder group and the air inlet valve of the next gas cylinder group to enable the gas cylinder group to serve as the gas source of the next gas cylinder group includes: and when the duration time is greater than or equal to the preset airtight time, introducing the gas in the gas bottle group into the next gas bottle group.
In one embodiment, the preset air pressure is 15MPA to 35 MPA.
A gas cylinder gas tightness detection device, comprising: the device comprises a bracket, an inflation module and a detection module; the bracket is used for placing a plurality of gas bottle groups; the inflation module is connected with the bracket, is also communicated with the gas cylinders in each gas cylinder group, and is used for inflating the gas cylinder groups to obtain the gas cylinder pressure; the detection module is connected with the bracket and is used for detecting whether the air pressure of the air bottle is matched with a preset air pressure; and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group.
Compared with the prior art, the invention has at least the following advantages:
in the process of detecting the air tightness of the current gas cylinder group, after gas is filled into the gas cylinder group, when the gas pressure of the gas cylinder reaches preset gas pressure, the fact that the air tightness of each gas cylinder of the current gas cylinder group is good is determined, then the gas in the current gas cylinder group is filled into the next gas cylinder group through a gas return valve and a gas inlet valve, namely the gas in the current gas cylinder group is used as a gas source of the next gas cylinder group, the gas for detecting the air tightness is reused, the gas pressurization time during detection of different gas cylinder groups is reduced, and therefore the efficiency of detecting the gas tightness of the gas cylinders is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flowchart of a gas cylinder airtightness detection method in one embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention relates to a gas cylinder airtightness detection method. In one embodiment, the gas cylinder airtightness detection method comprises the steps of inflating a gas cylinder group to obtain gas cylinder pressure; detecting whether the air pressure of the air bottle is matched with a preset air pressure or not; and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group. In the process of detecting the air tightness of the current gas cylinder group, after gas is filled into the gas cylinder group, when the gas pressure of the gas cylinder reaches preset gas pressure, the fact that the air tightness of each gas cylinder of the current gas cylinder group is good is determined, then the gas in the current gas cylinder group is filled into the next gas cylinder group through a gas return valve and a gas inlet valve, namely the gas in the current gas cylinder group is used as a gas source of the next gas cylinder group, the gas for detecting the air tightness is reused, the gas pressurization time during detection of different gas cylinders is shortened, and therefore the efficiency of detecting the gas tightness of the gas cylinders is improved.
Please refer to fig. 1, which is a flowchart illustrating a method for detecting gas tightness of a gas cylinder according to an embodiment of the present invention. The gas cylinder airtightness detection method comprises part or all of the following steps.
S100: and (5) inflating the gas cylinder group to obtain the gas cylinder pressure.
In this embodiment, the gas cylinder group is a gas cylinder group which needs to perform gas tightness detection currently, and each gas cylinder group includes a plurality of gas cylinders, that is, each gas cylinder group includes a plurality of gas cylinders, for example, a plurality of gas cylinders form a gas cylinder group and are fixed on the bracket, so that a plurality of gas cylinders of each group are inflated simultaneously. After each gas cylinder of the gas cylinder group is inflated, namely, the gas in the gas source is inflated into the gas cylinders, so that the gas pressure of each gas cylinder in the gas cylinder group is kept the same, the gas cylinders in the same group are convenient to be inflated simultaneously, the obtained gas cylinder gas pressure is ensured to be the gas pressure in each gas cylinder, and the gas cylinders are prevented from being detected one by one.
S200: and detecting whether the air pressure of the air bottle is matched with a preset air pressure.
In this embodiment, the preset air pressure is a standard pressure of air for detecting air tightness of each air bottle in the air bottle group, the air pressure of each air bottle is real-time air pressure of the detected air filled into the air bottle, and in order to facilitate control of the air pressure of each air bottle in the air bottle group, after the air bottle group is subjected to inflation processing, the air pressure of the air bottles in the air bottle group is collected, that is, the air pressure of the air bottles is monitored, so that the air pressure of the detected air filled into the air bottles reaches a specified air pressure, and accurate detection of the air tightness of the air bottles is facilitated. And matching and comparing the gas pressure of the gas cylinder with the preset gas pressure to determine whether the gas pressure filled into the gas cylinder reaches the standard gas pressure or not so as to carry out accurate gas tightness detection on the gas cylinder according to the gas reaching the standard gas pressure subsequently and improve the precision of gas tightness detection on the gas cylinder.
S300: and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group.
In this embodiment, the air pressure of the air cylinder is matched with the preset air pressure, which indicates that the air pressure of the detection gas filled into the air cylinder meets the detection standard, that is, indicates that the air pressure of the detection gas filled into the air cylinder reaches the detection standard air pressure, that is, indicates that the air pressure of the gas in each air cylinder in the air cylinder group is the designated detection air pressure. After the air pressure in the air bottle is determined, the air tightness of the air bottle is in a qualified state at the moment, namely the air tightness of the air bottle is good, then in order to facilitate the air tightness detection of other air bottle groups, the air return valve of the current air bottle group is opened, the detection gas in the current air bottle group is led out conveniently, the air inlet valve of the next air bottle group needing the air tightness detection is opened at the moment, the detection gas in the current air bottle group is filled into the next air bottle group, the detection gas in the current air bottle group is used as the source of the detection gas of the next air bottle group, the gas for detecting the air tightness of the air bottle circulates among the air bottle groups, the reuse of the detection gas is facilitated, the usage amount of the detection gas is reduced, and the cost for detecting the air tightness of the air bottle is reduced.
In the above embodiments, in the process of detecting the gas tightness of the current gas cylinder group, after the gas is filled into the gas cylinder group, when the gas cylinder pressure reaches the preset gas pressure, it is determined that the gas tightness of each gas cylinder of the current gas cylinder group is good, and then the gas in the current gas cylinder group is filled into the next gas cylinder group through the gas return valve and the gas inlet valve, that is, the gas in the current gas cylinder group is used as the gas source of the next gas cylinder group, so that the gas for detecting the gas tightness is reused, the gas pressurization time during detection of different gas cylinder groups is reduced, and the efficiency of detecting the gas tightness of the gas cylinders is improved. Moreover, this application has still reduced gaseous use amount to the cost of gas cylinder gas tightness detection has been reduced.
In one embodiment, the inflating the gas cylinder group includes: acquiring the air inlet pressure of the air bottle group; detecting whether the air inlet pressure is smaller than or equal to a preset air inlet pressure; and when the air inlet pressure is less than or equal to the preset air inlet pressure, sending a starting signal to a screw air compressor to provide air bottle air tightness detection gas for the air bottle group. In this embodiment, the intake pressure is the gas pressure in the gas pipe connected to the gas cylinder, and is the collection of the gas pressure of the detection gas charged into the gas cylinder, so as to realize real-time monitoring of the gas pressure of the gas charged into the gas cylinder, and facilitate determination of the gas pressure condition of the gas charged into the gas cylinder. The preset air inlet pressure is the standard charging air pressure of the air in the air pipe, and when the air tightness of the air bottle is detected, the preset air inlet pressure is the specified air pressure during detection. And detecting whether the air inlet pressure is less than or equal to a preset air inlet pressure or not, namely detecting the air pressure to be filled into the air bottle at present, wherein the air tightness of the air bottle can be accurately detected only after the air inlet pressure is determined to reach the preset air inlet pressure. The air inlet pressure is smaller than or equal to the preset air inlet pressure, which indicates that the air pressure of the detected gas in the air pipe connected with the gas cylinder does not reach the standard air pressure, namely that the air pressure of the detected gas to be filled into the gas cylinder is lower than the air pressure meeting the detection standard, namely that the gas to be filled into the gas cylinder does not meet the standard. Like this, the gas volume of the trachea of being connected with the gas cylinder this moment is less, can't be used as the detection to the gas cylinder gas tightness, for the convenience of subsequent gas tightness detects, sends actuating signal to screw compressor for screw compressor supplements the detection gas as the air supply, and the gas cylinder gas tightness that provides the sufficient pressure of capacity detects gas for current gas cylinder group. In another embodiment, the preset intake pressure is 0.5MPA to 0.8MPA, for example, the preset intake pressure is 0.6MPA, which is used as a detection pressure for distinguishing the amount of gas of the detection pressure in the gas pipe, so as to determine whether or not the replenishment of the gas by the external screw air compressor is required to ensure that the amount of gas of the detection gas is sufficient.
Further, the detecting whether the intake pressure is less than or equal to a preset intake pressure further includes: and when the air inlet pressure is greater than the preset air inlet pressure, sending a pressurization signal to the gas booster pump so as to pressurize the gas tightness detection gas of the gas cylinder. In this embodiment, the intake pressure is greater than the preset intake pressure, which indicates that the air pressure of the detection gas in the air pipe connected to the gas cylinder reaches the standard air pressure, that is, the air pressure of the detection gas to be charged into the gas cylinder meets the detection standard air pressure, that is, the gas to be charged into the gas cylinder meets the standard, the gas of the detection gas at this time can be used as the gas for detecting the gas tightness of the gas cylinder, and the amount of the gas charged into the gas cylinder also meets the requirement at this time. And then, the detected gas is pressurized, namely a pressurizing signal is sent to the gas booster pump to pressurize the gas tightness detection gas of the gas cylinder, so that the gas pressure of the gas filled into the gas cylinder is continuously increased, the gas pressure for detecting the gas tightness of the gas cylinder is conveniently formed in the gas cylinder, and the gas tightness of the gas cylinder is conveniently determined according to the gas pressure change condition of the pressurized detection gas.
Still further, when the inlet pressure is greater than the preset inlet pressure, sending a pressurization signal to a gas booster pump to pressurize the gas for gas tightness detection of the gas cylinder, the method includes: when the air inlet pressure is greater than the preset air inlet pressure, starting the gas booster pump to obtain the inflation pressure of the air tightness detection gas of the gas cylinders filled in the gas cylinder group; detecting whether the inflation pressure is greater than or equal to a preset inflation pressure; and when the inflation air pressure is greater than or equal to the preset inflation air pressure, taking the inflation air pressure as the air pressure of the air bottle. In this embodiment, after the intake pressure is greater than the preset intake pressure, the gas booster pump is turned on to increase the pressure of the gas charged into the gas cylinder, so that the gas in the gas cylinder meets the requirement of gas tightness detection. The gas filled into the gas cylinder is positioned in the gas pipe, the gas pressure in the gas cylinder is gradually increased after the gas is filled into the gas cylinder with larger internal space, and at the moment, the gas pressure filled into the gas cylinder needs to be monitored in real time to determine the change condition of the gas pressure in the gas cylinder, so that the condition that the gas pressure in the gas cylinder is too high or is under-pressure is avoided. And comparing the inflation pressure with the preset inflation pressure, namely comparing the pressure of the detected gas in the gas cylinder with the standard gas tightness detection pressure. The inflation pressure is greater than or equal to the preset inflation pressure, the fact that the gas cylinder is full of detection gas is indicated, the gas pressure of the detection gas at the moment is the same as the gas pressure in the gas pipe, the fact that the gas pressure full of the gas cylinder meets the gas pressure of detection airtightness is indicated, the gas pressure filled into the gas cylinder at the moment is the gas cylinder pressure, and the gas pressure serves as the gas pressure for gas cylinder airtightness detection, so that accurate detection of the gas cylinder airtightness is facilitated.
Still further, the detecting whether the inflation pressure is greater than or equal to a preset inflation pressure further includes: and when the inflation pressure is smaller than the preset inflation pressure, sending a continuous inflation signal to the gas booster pump so as to continuously increase the pressure of the gas filled in the gas bottle group. In this embodiment, the inflation pressure is less than the preset inflation pressure, which indicates that the gas cylinder is not filled with the detection gas, and the gas pressure of the detection gas at this time is less than the gas pressure in the gas pipe, i.e., indicates that the gas pressure in the gas cylinder does not conform to the gas pressure of the detection gas tightness, i.e., indicates that the detection gas in the gas cylinder is still in the inflation stage, and at this time, sends a continuous inflation signal to the gas booster pump, so that the gas pressure of the gas filled in the gas cylinder group is continuously increased, the detection gas in the gas cylinder is filled conveniently, and the gas pressure of the gas tightness of the gas cylinder is reached, thereby facilitating accurate detection of the gas tightness of the gas cylinder.
In one embodiment, the detecting whether the air pressure of the air cylinder matches a preset air pressure includes: detecting whether the air pressure of the air bottle is greater than or equal to the preset air pressure; and when the air pressure of the air bottle is greater than or equal to the preset air pressure, detecting whether the duration time of the air pressure of the air bottle is greater than or equal to the preset airtight time. In this embodiment, the preset air pressure is a standard detection air pressure in the air cylinder and is used as a reference air pressure for detecting the air tightness of the air cylinder, and the air pressure of the air cylinder is the air pressure of the detection gas filled into the air cylinder, that is, the air pressure of the air cylinder is a real-time air pressure in the air cylinder and is used for detecting whether the air pressure in the air cylinder can be maintained. The air pressure of the air bottle is larger than or equal to the preset air pressure, which indicates that the air pressure of the detection gas in the air bottle meets the air pressure required by detection, namely that the detection gas in the air bottle is full at the moment, namely that the air bottle is in or is about to enter an air tightness detection stage at the moment. Like this, after having confirmed that the detection gas in the gas cylinder meets the requirements, in order to facilitate the gas tightness of accurate detection gas cylinder, need detect the duration of detection gas in the gas cylinder to confirm whether the gas cylinder has good gas tightness, confirm that the detection gas in the gas cylinder has the condition of gas leakage promptly.
Further, when the gas cylinder pressure matches the preset gas pressure, opening a gas return valve of the gas cylinder group and a gas inlet valve of a next gas cylinder group, so that the gas cylinder group serves as a gas source of the next gas cylinder group, including: and when the duration time is greater than or equal to the preset airtight time, introducing the gas in the gas bottle group into the next gas bottle group. In this embodiment, the preset airtight time is a duration of air tightness detection of the air cylinder, that is, a time when the detected gas is in the air cylinder under the preset air pressure, that is, when the air tightness of the air cylinder is qualified, a time when the air pressure of the detected gas in the air cylinder is a standard duration of the preset air pressure. The duration time is greater than or equal to the preset airtight time, which indicates that the time length of the detected gas in the gas cylinder reaches the preset airtight time under the preset gas pressure, namely indicates that the time length of the detected gas in the gas cylinder reaches the standard airtight detection time under the standard detected gas pressure, namely indicates that each gas cylinder of the current gas cylinder group is an airtight qualified gas cylinder. Therefore, at the moment, the air return valve of the current gas cylinder group and the air inlet valve of the next gas cylinder group are opened, so that the detection gas in the current gas cylinder group can be conveniently filled into the next gas cylinder group, the detection gas can be recycled, the use amount of the detection gas is reduced, and the cost of gas tightness detection of the gas cylinders is reduced. In another embodiment, the preset air pressure is 15MPA to 35MPA, for example, the preset air pressure is 20MPA, and the pressure of the detection gas in the gas cylinders is correspondingly adjusted according to the specification and the material of each gas cylinder group, so as to perform the airtightness detection on different gas cylinders.
It can be understood that when carrying out gas tightness detection to the gas cylinder, place each gas cylinder of gas cylinder group on the support side by side, later aim at the admission valve on the air cock of gas cylinder again to fix the admission valve on the air cock, so that admission valve and the air cock of gas cylinder are stably connected, thereby are convenient for fill into the measuring gas in the gas cylinder. However, in the gas cylinder airtightness detection system without manual re-inspection of the gas inlet valve, the gas inlet valve and the gas nozzle are prone to be deviated, that is, the gas inlet valve cannot be completely engaged with the gas nozzle, so that the leakage of the detection gas filled in the gas inlet valve is caused, and the gas cylinder airtightness detection accuracy is reduced.
In order to improve the accuracy of gas tightness detection of the gas cylinder, namely, ensure that the detection gas is accurately filled into the gas cylinder, namely, ensure that the gas inlet valve is aligned with the gas nozzle of the gas cylinder, the gas cylinder group is subjected to gas filling treatment to obtain the gas pressure of the gas cylinder, the method comprises the following steps:
acquiring an air inlet valve image of the air bottle;
acquiring a first positioning coordinate and an air nozzle coordinate according to the air inlet valve image;
carrying out height processing on the first positioning coordinate and the air tap coordinate to obtain a positioning height;
detecting whether the positioning height is greater than a preset height;
and when the positioning height is greater than the preset height, sending a position deviation alarm signal to an air tightness monitoring system so as to close the air inlet valve.
In this embodiment, the admission valve image is admission valve and the connection structure image of air cock in hookup location department, the admission valve has first locating point, first locating point is right first locating point is in position coordinate on the admission valve image, the air cock coordinate is the top of air cock and is in position coordinate on the admission valve image. And carrying out height processing on the first positioning coordinate and the air faucet coordinate, namely, carrying out height difference calculation on the first positioning coordinate and the air faucet coordinate to obtain a difference value of the height position between the first positioning point and the top of the air faucet, namely, the positioning height. The preset height is a standard height position difference value, namely, the air inlet valve and the air tap are completely occluded, and the first positioning point of the air inlet valve and the standard height difference between the tops of the air tap are obtained. And detecting whether the positioning height is greater than a preset height or not, and facilitating determination of the current position of the first positioning point of the air inlet valve, thereby facilitating determination of whether the first positioning point of the air inlet valve is higher than the top of the air faucet or not. The positioning height is greater than preset the height, has shown the current position of the first locating point of admission valve has exceeded the top of air cock has shown promptly admission valve protrusion in the top of air cock has also shown admission valve misalignment the air cock, this moment admission valve with there is the position deviation between the air cock, sends off the position deviation alarm signal to airtight monitored control system, so that the admission valve is closed, in order to avoid passing through the admission valve fills the testing gas into the gas cylinder, and the monitoring personnel of also being convenient for simultaneously in time adjust the admission valve.
Further, in the case of the offset between the air intake valve and the air faucet, the air intake valve is most inclined, that is, the air leakage rate caused by this situation is fastest, in order to facilitate finding the situation of the position inclination in time, the first positioning coordinate and the air faucet coordinate are obtained according to the air intake valve image, and then the method further comprises the following steps:
acquiring a second positioning coordinate according to the air inlet valve image;
carrying out difference processing on the first positioning coordinate, the second positioning coordinate and the air tap coordinate to obtain a bit height difference value;
detecting whether the bit height difference value is smaller than a preset bit difference, wherein the preset bit difference is the length between the first positioning coordinate and the second positioning coordinate;
and when the bit height difference value is smaller than the preset bit difference, sending a bit inclination alarm signal to an airtight monitoring system to close the air inlet valve.
In this embodiment, the second positioning point corresponding to the second positioning coordinate is located on the air intake valve, and the second positioning point corresponding to the second positioning coordinate is located far away from the air faucet, and under a normal condition, the second positioning point and the first positioning point are located on the same vertical line. It is right first locating point coordinate second locating point coordinate and the air cock coordinate carries out the difference and processes, is to calculate respectively first locating point protrusion in the height of air cock, and second locating point protrusion in the height of air cock to two heights above are solved the difference in height, in order to obtain the difference value of two locating points position height on the admission valve, ensure that the difference in height between two locating points on the admission valve does not have the error, has improved the difference precision to two locating point position height on the admission valve. The preset position difference is the length between the first positioning coordinate and the second positioning coordinate, the position height difference value is smaller than the preset position difference, and the straight line formed by the two positioning points on the air inlet valve is shown to be in an inclined state, namely the air inlet valve is shown to be in an inclined state with the air faucet, namely the air inlet valve is obliquely arranged on the air faucet, and at the moment, the air inlet valve is not aligned with the air faucet. And at the moment, an oblique alarm signal is sent to the airtight monitoring system, so that the air inlet valve is closed in time, and the air leakage of the detected gas is further reduced.
Further, to used repeatedly's gas cylinder, the air cock of gas cylinder needs often plug, leads to the damage of air cock easily to lead to the air cock to appear leaking gas, for the convenience carries out gas leakage detection to the air cock, detect whether location height is greater than preset height, still include following step afterwards:
acquiring a connection gray value according to the air inlet valve image, wherein the connection gray value is the gray corresponding to the image at the connection position of the air inlet valve and the air tap;
carrying out gray density treatment on the connection gray value to obtain the density of the surroundings;
detecting whether the perimeter density is matched with a preset density;
when the perimeter density matches the preset density, an air leak alarm is sent to an air seal monitoring system to cause the air intake valve to close.
In this embodiment, there is a difference in color between the detection gas filled in the cylinder through the intake valve and air, for example, nitrogen dioxide mixed in the detection gas. The connection gray value is an image gray value on the air inlet valve image and corresponds to a connection part of the air inlet valve and the air tap. When the air cock appeared damaging, through detecting behind the grey level on the admission valve image, it was right promptly to connect the grey scale value and carry out grey density and handle, in order to incite somebody to action it corresponds with gas density to connect the grey scale value, acquires promptly gas density around the junction of admission valve and air cock. The preset density is the gas density corresponding to the detected gas, the gas density is matched with the preset density, and the fact that the gas density around the connection position of the air inlet valve and the gas nozzle is equal to the standard gas density is shown, namely that the gas around the connection position of the air inlet valve and the gas nozzle is the detected gas is shown. And sending a position deviation alarm signal to the air tightness monitoring system so as to close the air inlet valve in time, further reducing the air leakage of the detected gas and further reducing the air tightness detection cost of the gas cylinder.
In one embodiment, the application further provides a gas cylinder airtightness detection device which adopts the gas cylinder airtightness detection method described in any one of the above embodiments. In one embodiment, the gas cylinder airtightness detection device is provided with functional modules for realizing the gas cylinder airtightness detection method in correspondence with the steps. The gas cylinder airtightness detection device comprises: the device comprises a bracket, an inflation module and a detection module; the bracket is used for placing a plurality of gas bottle groups; the inflation module is connected with the bracket, is also communicated with the gas cylinders in each gas cylinder group, and is used for inflating the gas cylinder groups to obtain the gas cylinder pressure; the detection module is connected with the bracket and is used for detecting whether the air pressure of the air bottle is matched with a preset air pressure; and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group. In this embodiment, in the process of detecting the gas tightness of the current gas cylinder group, the gas filling module fills gas into the gas filling module, when the gas cylinder pressure reaches the preset gas pressure, it is determined that the gas tightness of each gas cylinder of the current gas cylinder group is good, and then the gas in the current gas cylinder group is filled into the next gas cylinder group through the gas return valve and the gas inlet valve, that is, the gas in the current gas cylinder group is used as the gas source of the next gas cylinder group, so that the gas for detecting the gas tightness is reused, the gas pressurization time during detection of different gas cylinder groups is reduced, and the gas tightness detection efficiency of the gas cylinders is improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A gas cylinder airtightness detection method is characterized by comprising the following steps:
inflating the gas cylinder group to obtain the gas cylinder pressure;
detecting whether the air pressure of the air bottle is matched with a preset air pressure or not;
and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group.
2. The gas cylinder airtightness detection method according to claim 1, wherein the gas cylinder group is subjected to inflation processing, and the inflation processing includes:
acquiring the air inlet pressure of the air bottle group;
detecting whether the air inlet pressure is smaller than or equal to a preset air inlet pressure;
and when the air inlet pressure is less than or equal to the preset air inlet pressure, sending a starting signal to a screw air compressor to provide air bottle air tightness detection gas for the air bottle group.
3. A gas cylinder airtightness detection method according to claim 2, wherein the preset intake pressure is 0.5MPA to 0.8 MPA.
4. The gas cylinder airtightness detection method according to claim 2, wherein said detecting whether the intake pressure is less than or equal to a preset intake pressure further comprises:
and when the air inlet pressure is greater than the preset air inlet pressure, sending a pressurization signal to the gas booster pump so as to pressurize the gas tightness detection gas of the gas cylinder.
5. The gas cylinder airtightness detection method according to claim 4, wherein when the inlet pressure is higher than the preset inlet pressure, sending a pressurization signal to a gas booster pump to pressurize the gas cylinder airtightness detection gas, comprises:
when the air inlet pressure is greater than the preset air inlet pressure, starting the gas booster pump to obtain the inflation pressure of the air tightness detection gas of the gas cylinders filled in the gas cylinder group;
detecting whether the inflation pressure is greater than or equal to a preset inflation pressure;
and when the inflation air pressure is greater than or equal to the preset inflation air pressure, taking the inflation air pressure as the air pressure of the air bottle.
6. The gas cylinder airtightness detection method according to claim 5, wherein said detecting whether the inflation gas pressure is greater than or equal to a preset inflation gas pressure, then further comprises:
and when the inflation pressure is smaller than the preset inflation pressure, sending a continuous inflation signal to the gas booster pump so as to continuously increase the pressure of the gas filled in the gas bottle group.
7. The gas cylinder airtightness detection method according to claim 1, wherein the detecting whether the gas cylinder gas pressure matches a preset gas pressure includes:
detecting whether the air pressure of the air bottle is greater than or equal to the preset air pressure;
and when the air pressure of the air bottle is greater than or equal to the preset air pressure, detecting whether the duration time of the air pressure of the air bottle is greater than or equal to the preset airtight time.
8. The method for detecting the airtightness of the gas cylinder according to claim 7, wherein when the gas cylinder pressure matches the preset gas pressure, the opening of the gas return valve of the gas cylinder group and the gas inlet valve of the next gas cylinder group to make the gas cylinder group serve as the gas source of the next gas cylinder group comprises:
and when the duration time is greater than or equal to the preset airtight time, introducing the gas in the gas bottle group into the next gas bottle group.
9. A gas cylinder airtightness detection method according to claim 8, wherein the preset gas pressure is 15MPA to 35 MPA.
10. A gas cylinder airtightness detection device is characterized by comprising:
the support is used for placing a plurality of gas bottle groups;
the inflation module is connected with the bracket and is also communicated with the gas cylinders in each gas cylinder group, and the inflation module is used for inflating the gas cylinder groups to obtain the gas cylinder pressure;
the detection module is connected with the bracket and is used for detecting whether the air pressure of the air bottle is matched with a preset air pressure or not; and when the air pressure of the air bottle is matched with the preset air pressure, opening an air return valve of the air bottle group and an air inlet valve of the next air bottle group so that the air bottle group is used as an air source of the next air bottle group.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111363737.6A CN114235313B (en) | 2021-11-17 | 2021-11-17 | Gas cylinder air tightness detection method and device |
| PCT/CN2021/132658 WO2023087338A1 (en) | 2021-11-17 | 2021-11-24 | Method and apparatus for testing gas tightness of gas cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111363737.6A CN114235313B (en) | 2021-11-17 | 2021-11-17 | Gas cylinder air tightness detection method and device |
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| CN114235313A true CN114235313A (en) | 2022-03-25 |
| CN114235313B CN114235313B (en) | 2023-06-06 |
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| WO (1) | WO2023087338A1 (en) |
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| CN117129160B (en) * | 2023-08-25 | 2024-03-26 | 江苏舒茨测控设备股份有限公司 | Early warning and alarming method, system, terminal and storage medium of component airtight detection device |
| CN117330261B (en) * | 2023-09-27 | 2024-06-04 | 深圳市康泰电气设备有限公司 | Switch equipment inflating cabinet air leakage detection device |
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Also Published As
| Publication number | Publication date |
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| CN114235313B (en) | 2023-06-06 |
| WO2023087338A1 (en) | 2023-05-25 |
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