CN109489915B - Gas sealing performance detection device and using method thereof - Google Patents
Gas sealing performance detection device and using method thereof Download PDFInfo
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- CN109489915B CN109489915B CN201910041524.8A CN201910041524A CN109489915B CN 109489915 B CN109489915 B CN 109489915B CN 201910041524 A CN201910041524 A CN 201910041524A CN 109489915 B CN109489915 B CN 109489915B
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/226—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
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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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Abstract
The invention discloses a gas sealing performance detection device and a using method thereof, and the device comprises a main cabin body for placing a detected gas sealing element, wherein the inner wall of the main cabin body is provided with a pressure sensor, a leakage detection sensor and a sliding guide rail at different heights, the sliding guide rail is connected with an infrared thermal imager in a sliding way, and the main cabin body is provided with an analysis display screen connected with the pressure sensor, the leakage detection sensor and the infrared thermal imager. The invention takes the infrared thermal images of all angles by three infrared thermal imaging instruments which can circularly move on respective guide rails, rapidly positions the leakage position of the tested sealing element according to the image change, then detects the pressure change in the sealed cabin by the pressure sensor on the inner shell of the sealed cabin, and then detects the content of trace gas leaked out of the tested sealing element in the sealed cabin by the gas leakage sensor so as to calculate the leakage parameters of the tested gas sealing element, such as gas leakage rate and the like, and the gas leakage position.
Description
Technical Field
The invention belongs to the technical field of gas sealing performance detection, and particularly relates to a gas sealing performance detection device and a using method thereof.
Background
At present, a plurality of gas sealing elements are available on the market, and the gas sealing elements play an important role in respective mechanical equipment, so that the sealing performance requirement of the gas sealing elements is high. Gas sealing performance detection in the industry today includes two main categories: the first is to detect the leakage position of the sealing element by technical means; the second type is to detect the gas leakage amount of the gas sealing element by a specific experimental device. On one hand, the detection methods are single, and cannot rapidly obtain specific sealing performance parameters of the sealing element, and on the other hand, the detection methods are limited by detection technologies or instruments, so that large errors are easily caused, and the accuracy of detection results is influenced.
Disclosure of Invention
Based on the defects of the prior art, the technical problem to be solved by the invention is to provide a rapid, accurate and comprehensive gas sealing performance detection device and a use method thereof, which can rapidly and accurately find the leakage position of the gas sealing element to be detected and can detect the sealing performance of the gas sealing element to be detected.
In order to solve the technical problems, the invention is realized by the following technical scheme: the invention provides a gas sealing performance detection device, which comprises a main cabin body for placing a detected gas sealing element, wherein pressure sensors are arranged on the inner wall of the main cabin body at different heights and used for detecting gas pressure values at different positions of different height layers in the main cabin body;
leakage detection sensors are arranged on the inner wall of the main cabin body at different heights and are used for detecting the content of tracer gas in the leaked gas at different heights and different angles in the main cabin body;
sliding guide rails are arranged on the inner wall of the main cabin body at different heights, and infrared thermal imagers are connected to the sliding guide rails in a sliding mode and used for shooting from various angles to obtain infrared images;
and the main cabin body is provided with an analysis display screen, is connected with the pressure sensor, the leakage detection sensor and the infrared thermal imager, and is used for carrying out comprehensive analysis on the pressure value, the concentration value of the tracer gas and the infrared image transmitted back and determining the leakage position and the leakage rate of the gas sealing element.
Optionally, pressure sensor is including being located respectively the first pressure sensor, second pressure sensor and the third pressure sensor of the different positions of the upper, middle and lower three aspect of main cabin body inner wall, first pressure sensor, second pressure sensor and third pressure sensor's spatial arrangement position is crisscross each other, and three pressure sensor projection each other becomes 120 contained angles when on the horizontal plane.
Further, the leakage detection sensors include a first leakage detection sensor, a second leakage detection sensor and a third leakage detection sensor which are respectively positioned at different positions of the upper, middle and lower layers of the inner wall of the main cabin;
the first, second, and third leak detection sensors are respectively disposed adjacent to the first, second, and third pressure sensors.
Optionally, the sliding guide rails include a first sliding guide rail, a second sliding guide rail and a third sliding guide rail that are distributed on different height levels;
the infrared thermal imager comprises a first infrared thermal imager, a second infrared thermal imager and a third infrared thermal imager which are respectively connected to the first sliding guide rail, the second sliding guide rail and the third sliding guide rail in a sliding manner;
the first sliding guide rail, the second sliding guide rail and the third sliding guide rail are all circular, and a first infrared thermal imager, a second infrared thermal imager and a third infrared thermal imager on the first sliding guide rail, the second sliding guide rail and the third sliding guide rail rotate around the central axis of the main cabin body in a circumferential mode.
Optionally, water mist pressurizers connected with the analysis display screen are symmetrically arranged on two sides of the top of the inner wall of the main cabin body, and are used for forming mist and adjusting the air humidity in the main cabin body;
the main cabin body is provided with a water inlet, one end of the water inlet is connected with the water mist pressurizer through a water inlet pipeline, and the other end of the water inlet is connected with the water tank.
Furthermore, a humidity detection sensor is arranged in the main cabin body, connected with the analysis display screen and used for detecting the internal humidity of the main cabin body.
Optionally, a light source connected with the analysis display screen is arranged in the middle of the top of the inner wall of the main cabin body and used for providing illumination for the inside of the main cabin body;
and a reflector is arranged right above the light source and used for collecting all the light of the light source to the position of the gas sealing element.
Further, a light intensity detection sensor is arranged in the main cabin body, is connected with the analysis display screen and is used for detecting the internal illumination intensity of the main cabin body.
Optionally, an exhaust pipeline is arranged at the bottom of the main cabin body, one end of the exhaust pipeline, which is located inside the main cabin body, is connected with a filter, and one end of the exhaust pipeline, which is located outside the main cabin body, is connected with an exhaust hole sealing cover;
the main cabin body is also provided with a power interface for supplying power to the detection device and a data transmission hole for transmitting data with the outside.
The method comprises the steps of shooting infrared thermal images of all angles by three infrared thermal imaging instruments which can circularly move on respective guide rails, rapidly positioning the leakage position of a detected sealing element according to image change, detecting the pressure change inside the sealed cabin by a pressure sensor on an inner shell of the sealed cabin, and detecting the content of trace gas leaked out of the detected sealing element in the sealed cabin by a gas leakage sensor so as to calculate the leakage parameters such as the gas leakage rate of the detected gas sealing element and the gas leakage position of the detected gas sealing element.
The invention also provides a using method of the gas sealing performance detection device, which comprises the following steps:
s10: firstly, filling gas and tracer gas to be stored in a detected gas sealing element at the same time, so that the internal gas pressure of the gas sealing element reaches the specified pressure value;
s20: placing the detected gas sealing element into the main cabin;
s30: the infrared thermal imager on the sliding guide rail simultaneously rotates along the same direction from the initial position, and shoots once every certain angle of rotation, and then sends the shot infrared image to an analysis display screen for identification and analysis;
s40: the pressure sensor and the leakage detection sensor transmit monitored data to the analysis display screen in real time, and the analysis display screen performs comprehensive analysis according to the transmitted infrared image, the transmitted pressure value and the transmitted concentration value of the tracer gas to determine the leakage position of the gas sealing element;
s50: the infrared thermal imager is rotated to the leakage position at the same time, the leakage position is clearly reflected in the shooting range of the infrared thermal imager, video recording and quick shooting are started at the same time, and the leakage position of the gas sealing element is accurately positioned;
s60: and meanwhile, the pressure sensors and the leakage detection sensors which are positioned on the inner wall of the main cabin body and have different heights and different positions monitor the pressure change and the content of the tracer gas in the main cabin body in real time, the collected data are timely returned to the analysis display screen for storage, recording and analysis, and after the gas pressure in the main cabin body reaches a specified value, the analysis display screen performs analysis and calculation according to the collected data to obtain the leakage rate of the detected gas sealing element.
Therefore, the invention has simple structure and convenient operation, can quickly and accurately find the leakage position of the tested gas sealing element, can also detect the sealing performance of the tested gas sealing element, directly obtains related parameters, greatly improves the defects of single measurement and multiple measurement of the leakage position and the sealing performance in the past, fully embodies the automatic and intelligent theoretical thought, and provides a certain theoretical basis for the subsequent detection of related fields.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following detailed description is given in conjunction with the preferred embodiments, together with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a front view of a gas sealing performance detecting apparatus according to a preferred embodiment of the present invention;
fig. 2 is a perspective view of a gas sealing performance detecting apparatus according to a preferred embodiment of the present invention;
fig. 3 is an internal structural view of a gas sealing performance detection apparatus according to a preferred embodiment of the present invention;
FIG. 4 is a spatial distribution diagram of the main internal components of the gas sealing performance testing apparatus according to the preferred embodiment of the present invention;
FIG. 5 is a top view of FIG. 4;
fig. 6 is an infrared measurement angle diagram of the gas sealing performance detection apparatus according to the preferred embodiment of the present invention.
In the figure, 1-bilge support; 2-a cabin door; 3-a main cabin; 4-cabin top; 5-analyzing the display screen; 6-operating a key; 7-a data transmission port; 8-power interface; 9-a water inlet; 10-a water mist pressurizer; 11-a reflector; 12-a light source; 13-a first leak detection sensor; 14-a first pressure sensor; 15-a first infrared thermal imager; 16-a first sliding guide; 17-a second leak detection sensor; 18-a second pressure sensor; 19-a second sliding guide; 20-a second infrared thermal imager; 21-a third infrared thermal imager; 22-a third pressure sensor; 23-a third leak detection sensor; 24-a third sliding guide; 25-a gas sealing element; 26-seal holder; 27-a filter; 28-an exhaust duct; 29-vent seal cap; 30-a humidity detection sensor; 31-light intensity detecting sensor.
Detailed Description
Other aspects, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which form a part of this specification, and which illustrate, by way of example, the principles of the invention. In the referenced drawings, the same or similar components in different drawings are denoted by the same reference numerals.
The main body of the gas sealing performance detection device is a capsule type sealed cabin, and the external structure of the device mainly comprises a cabin bottom support 1, a cabin door 2, a main cabin body 3, a water inlet 9, a power supply interface 8, a data transmission port 7, an operation key 6, an analysis display screen 5, a cabin top 4 and an exhaust hole sealing cover 29; the internal structure of the device mainly comprises a filter 27 arranged on the inner wall of the main cabin body 3, a sealing element fixing seat 26, a detected air sealing element 25, pressure sensors 14, 18 and 22, leakage detection sensors 13, 17 and 23, a light intensity detection sensor 31, a humidity detection sensor 30, sliding guide rails 16, 19 and 24, infrared thermal imagers 15, 20 and 21, a water mist pressurizer 10, a reflector 11 and a light source 12. In addition, an exhaust pipeline 28, a water inlet pipeline, a data transmission circuit, a power transmission circuit and the like are arranged between the inner shell and the outer shell of the device.
As shown in fig. 1 to 6, the bilge support 1, the main cabin body 3 and the cabin roof 4 of the gas sealing performance detection device provided by the present invention are fixed together by welding, and the bilge support 1 is a support structure of the whole device and is fixed at the lower part of the main cabin body 3 to play a role in supporting the whole device. The main cabin 3 is the main structure of the whole device and provides a carrier for other mechanisms of the device. The hatch door 2 is located on the bulkhead of the main cabin 3, and a detected gas sealing element 25 can enter and exit the main cabin 3 through the hatch door 2, and good gas tightness is required for the hatch door 2. The exhaust hole sealing cover 29 is positioned at the bottom of the main cabin body 3, so that external dust can be prevented from entering the device when the device is not used, and the exhaust pipeline 28 can be sealed during experimental measurement, so that the internal gas of the main cabin body 3 is prevented from leaking to further influence the measurement precision. The exhaust duct 28 is connected to the filter 27, and when the device testing experiment is completed, the gas in the main chamber 3 will pass through the filter 27 and then be exhausted through the exhaust duct 28. The filter 27 is a gas filtering mechanism of the device of the present invention, and after the experiment of the device of the present invention is completed, the leaked gas in the main cabin 3 will pass through the filter 27, so as to ensure that the filtered gas is discharged through the exhaust pipe 28 after being nontoxic and harmless.
One end of an upper water inlet 9 of the main cabin body 3 of the invention is connected with the water spray pressurizer 10 through a water inlet pipeline, and the other end is externally connected with a water tank (not shown in the figure) which can provide water source for the water spray pressurizer 10. The water mist pressurizers 10 are symmetrically arranged on two sides of the top of the inner wall of the device, so that water is absorbed through the water inlet 9 before the device starts to measure, and then spray is formed through the water mist pressurizers 10 to adjust the air humidity in the main cabin body 3; on the other hand, after the experimental measurement is completed, the water inlet 9 is disconnected from the water tank, the water mist pressurizer 10 can suck air through the water inlet 9 and inject the air into the main cabin 3 to increase the internal air pressure, and at the moment, the sealing cover 29 of the exhaust hole is opened, so that the air in the main cabin 3 can be filtered through the filter 27 and then exhausted into the atmosphere.
The power interface 8 is a power access of the device, is located at the bottom of the outer shell of the main cabin 3, and can directly supply power to each component in the device through a power transmission circuit in the using process. The data transmission hole 7 is an information transmission hole between the device and the outside, and various data tested by the device can be transmitted to external equipment through the data transmission hole 7.
The analysis display screen 5 is positioned on the outer wall of the main cabin 3, can display various operation instructions and test data, and is connected with the pressure sensors 14, 18 and 22, the leakage detection sensors 13, 17 and 23 and the infrared thermal imagers 15, 20 and 21 through a data transmission circuit. The operation key 6 is an operation platform of the device, all operation instructions are sent by operation of the operation platform, and the operation key is connected with the analysis display screen 5, the pressure sensors 14, 18 and 22, the leakage detection sensors 13, 17 and 23 and the infrared thermal imaging instruments 15, 20 and 21 through a data transmission circuit.
The pressure sensors 14, 18 and 22, the leakage detection sensors 13, 17 and 23, the sliding guide rails 16, 19 and 24 and the infrared thermal imaging cameras 15, 20 and 21 are divided into three layers and are sequentially distributed on layers with different heights on the inner wall of the main cabin body 3. The pressure sensors 14, 18, 22 and the leakage detection sensors 13, 17, 23 are used in combination, and are adjacently fixed on three layers of the inner wall of the main cabin 3 at different heights. The pressure sensors 14, 18, 22 are located on the inner wall of the main cabin 3, the pressure sensors are divided into a first pressure sensor 14, a second pressure sensor 18 and a third pressure sensor 22, the three pressure sensors 14, 18 and 22 are respectively positioned at different positions of an upper layer, a middle layer and a lower layer of the inner wall of the main cabin body 3, and the spatial arrangement positions of the three pressure sensors 14, 18, 22 are staggered with each other, from the spatial distribution diagram of the main elements in the apparatus of the present invention shown in fig. 4 and 5, the three pressure sensors 14, 18, 22 form an included angle of 120 degrees with each other, respectively detect the gas pressure values at different positions of three different height levels in the main cabin 3 and transmit the values to the analysis display screen 5 through the data transmission circuit, the analysis display screen 5 will then take the average pressure value of the three as the final result to be displayed on the display screen.
The leakage detecting sensors 13, 17, 23 of the present invention are similar to the spatial arrangement of the pressure sensors 14, 18, 22, and are divided into a first leakage detecting sensor 13, a second leakage detecting sensor 17, and a third leakage detecting sensor 23, which are also located at different positions of the upper, middle, and lower levels, and the spatial arrangement positions of the three leakage detecting sensors 13, 17, 23 are staggered with each other, as seen from the top view of fig. 5, the three leakage detecting sensors 13, 17, 23 form 120 included angles with each other, and detect the content of the tracer gas in the leaked gas at different heights and different angles in the main cabin 3, respectively, and transmit the value to the analysis display screen 5, and can be used as a basis for auxiliary judgment of the leakage position according to the value difference, which should be located near the level position of the leakage detecting sensor 13, 17, 23 with the largest tracer gas concentration, analysis display screen 5 can be regarded as final measuring data after taking the average with three numerical value, and give infrared thermal imaging system 15, 20, 21 issue the instruction, make three infrared thermal imaging system 15, 20, 21 when moving to the higher position of concentration monitoring, reduce the translation rate and shoot continuously, and then more accurate discernment reveals the position.
The sliding guide rails 16, 19, 24 of the present invention are located on the inner wall of the main cabin 3, and are divided into a first sliding guide rail 16, a second sliding guide rail 19, and a third sliding guide rail 24, and the positions of the first sliding guide rail, the second sliding guide rail, and the third sliding guide rail are distributed on different height levels, which are used for providing a guiding function for the circumferential sliding of the infrared thermal imaging cameras 15, 20, 21, and when the device starts to work, the infrared thermal imaging cameras 15, 20, 21 can flexibly rotate in the sliding guide rails 16, 19, 24. The infrared thermal imaging system comprises a first infrared thermal imaging system 15, a second infrared thermal imaging system 20 and a third infrared thermal imaging system 21, wherein the three infrared thermal imaging systems 15, 20 and 21 are respectively connected with the sliding guide rails 16, 19 and 24, the initial positions are positioned at the same angle positions of the guide rails of different height layers, the initial positions of the three infrared thermal imaging systems 15, 20 and 21 are on the same vertical line, the three infrared thermal imaging systems can freely rotate around the central axis of the main cabin body 3 on the three sliding guide rails 16, 19 and 24, so that shooting from all angles is realized, then the shot infrared images are transmitted to the analysis display screen 5 for image recognition and data analysis, when the analysis display screen 5 finds the leakage position through a series of analysis on the transmitted images, the three infrared thermal imaging systems 15 at the moment can immediately issue instructions, 20, 21 quickly moves to the vicinity of the leakage position immediately, then moves slowly and continuously shoots and transmits the shot infrared images back to the analysis display screen 5 until the analysis display screen 5 stops at the best shooting position, then the three infrared thermal imaging cameras 15, 20, 21 automatically adjust the shooting focal length and the shooting angle to seek the best shooting effect, and continuously record the leakage condition of the leakage position after all the adjustments are completed.
The light intensity detection sensor 31 and the humidity detection sensor 30 of the present invention are both arranged to improve the shooting accuracy of the thermal infrared imagers 15, 20, 21. According to the prior art, the light intensity detection sensor 31 and the humidity detection sensor 30 are arranged in consideration of the fact that the light intensity detection sensor and the humidity detection sensor 30 are both connected with the analysis display screen 5, the operation key 6 can be used for inputting an ideal air humidity value and an ideal light intensity value before an experiment, then the instruction is sent to the light source 12 and the water mist pressurizer 10 through the analysis display screen 5, the light source 12 and the water mist pressurizer 10 receive the instruction to start lighting and spray water mist until the values detected by the light intensity detection sensor 31 and the humidity detection sensor 30 accord with the preset value, the analysis display screen 5 sends a stop instruction, and the light source 12 and the water mist pressurizer 10 stop working.
Next, referring to fig. 1 to 6 and in conjunction with the above-described structural description, a method of using the gas sealing performance detection apparatus of the present invention will be described:
firstly, the gas to be detected and the trace gas to be stored are filled in the gas sealing element 25 to be detected simultaneously, so that the internal gas pressure of the gas sealing element 25 to be detected reaches the specified pressure value. The tracer gas is required to be a gas that is incapable of any chemical reaction with the originally stored gas in the gas sealing member 25, is non-hazardous, and is capable of being detected by the leak detection sensors 13, 17, 23, wherein the tracer gas may be selected from helium.
Then the hatch door 2 of the main cabin 3 of the invention is opened rapidly, the gas sealing element 25 to be detected is put into the main cabin 3 and is placed on the sealing element fixing seat 26 at the bottom of the cabin inside the main cabin 3, then the hatch door 2 is closed, and the power switch of the sealing cabin is opened. The control of the operation keys 6 can control the mechanisms in the main cabin 3 to start working at the same time. At this time, the three thermal infrared imagers 15, 20, 21 on the three sliding guides 16, 19, 24 are simultaneously rotated in the same direction from the initial position, and are shot once every certain angle (generally no more than 20 degrees), and then the shot infrared images are sent to the analysis display screen 5 of the apparatus of the present invention for identification and analysis, and the pressure sensors 14, 18, 22 and the leakage detection sensors 13, 17, 23 also transmit the monitored data to the analysis display screen 5 in real time, after the three thermal infrared imagers 15, 20, 21 have rotated for one week back to the initial position, the analysis display screen 5 performs comprehensive analysis according to the transmitted infrared images, pressure values, concentration values, etc. to determine the leakage position, and then the system immediately sends out instructions to make the three thermal infrared imagers 15, 20, 21 simultaneously rotate to the leakage position, and the shooting angles and the automatic focusing are respectively adjusted, so that the leakage position can be clearly reflected within the shooting range of the three infrared thermal imaging instruments 15, 20 and 21, and video recording and rapid shooting are simultaneously started, so that the leakage position of the gas sealing element 25 is accurately positioned, analysis can be performed according to infrared images returned by the three infrared thermal imaging instruments 15, 20 and 21 from different shooting angles, and the analysis of the sealing performance of the gas sealing element 25 is facilitated. Meanwhile, the three pressure sensors 14, 18 and 22 and the three leakage detection sensors 13, 17 and 23 which are positioned on the inner wall of the main cabin body 3 and have different heights and different positions monitor the pressure change and the content of the tracer gas in the main cabin body 3 in real time, and transmit the acquired data back to the analysis display screen 5 in time for storage, recording and analysis, so that after the gas pressure in the main cabin body 3 reaches a specified value after a period of time, the analysis display screen 5 can perform related analysis and calculation according to the acquired various data, and finally obtain a series of sealing performance parameters such as the leakage rate, the leakage position and the like of the detected gas sealing element 25.
The invention takes the infrared thermal images of all angles by three infrared thermal imaging instruments which can circularly move on respective guide rails, rapidly positions the leakage position of the tested sealing element according to the image change, then detects the pressure change in the sealed cabin by the pressure sensor on the inner shell of the sealed cabin, and then detects the content of trace gas leaked out of the tested sealing element in the sealed cabin by the gas leakage sensor so as to calculate the leakage parameters of the tested gas sealing element, such as gas leakage rate and the like, and the gas leakage position.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (6)
1. A gas sealing performance detection device comprises a main cabin body used for placing a detected gas sealing element, and is characterized in that:
pressure sensors are arranged on the inner wall of the main cabin body at different heights and are used for detecting gas pressure values of different positions of different height layers in the main cabin body;
leakage detection sensors are arranged on the inner wall of the main cabin body at different heights and are used for detecting the content of tracer gas in the leaked gas at different heights and different angles in the main cabin body;
sliding guide rails are arranged on the inner wall of the main cabin body at different heights, and infrared thermal imagers are connected to the sliding guide rails in a sliding mode and used for shooting from various angles to obtain infrared images;
the main cabin body is provided with an analysis display screen which is connected with the pressure sensor, the leakage detection sensor and the infrared thermal imager and is used for comprehensively analyzing the pressure value, the concentration value of the tracer gas and the infrared image which are transmitted back and determining the leakage position and the leakage rate of the gas sealing element;
the pressure sensors comprise a first pressure sensor, a second pressure sensor and a third pressure sensor which are respectively positioned at different positions of an upper layer surface, a middle layer surface and a lower layer surface of the inner wall of the main cabin body, the spatial arrangement positions of the first pressure sensor, the second pressure sensor and the third pressure sensor are staggered, and the three pressure sensors form an included angle of 120 degrees when projected on a horizontal plane;
the leakage detection sensors comprise a first leakage detection sensor, a second leakage detection sensor and a third leakage detection sensor which are respectively positioned at different positions of an upper layer, a middle layer and a lower layer of the inner wall of the main cabin body;
the first, second and third leak detection sensors are respectively arranged adjacent to the first, second and third pressure sensors;
the sliding guide rails comprise a first sliding guide rail, a second sliding guide rail and a third sliding guide rail which are distributed on different height layers;
the infrared thermal imager comprises a first infrared thermal imager, a second infrared thermal imager and a third infrared thermal imager which are respectively connected to the first sliding guide rail, the second sliding guide rail and the third sliding guide rail in a sliding manner;
the first sliding guide rail, the second sliding guide rail and the third sliding guide rail are all circular, and a first infrared thermal imager, a second infrared thermal imager and a third infrared thermal imager on the first sliding guide rail, the second sliding guide rail and the third sliding guide rail rotate around the central axis of the main cabin body in a circumferential manner;
the use method of the gas sealing performance detection device comprises the following steps:
s10: firstly, filling gas and tracer gas to be stored in a detected gas sealing element at the same time, so that the internal gas pressure of the gas sealing element reaches the specified pressure value;
s20: placing the detected gas sealing element into the main cabin;
s30: the infrared thermal imager on the sliding guide rail simultaneously rotates along the same direction from the initial position, and shoots once every certain angle of rotation, and then sends the shot infrared image to an analysis display screen for identification and analysis;
s40: the pressure sensor and the leakage detection sensor transmit monitored data to the analysis display screen in real time, and the analysis display screen performs comprehensive analysis according to the transmitted infrared image, the transmitted pressure value and the transmitted concentration value of the tracer gas to determine the leakage position of the gas sealing element;
s50: the infrared thermal imager is rotated to the leakage position at the same time, the leakage position is clearly reflected in the shooting range of the infrared thermal imager, video recording and quick shooting are started at the same time, and the leakage position of the gas sealing element is accurately positioned;
s60: and meanwhile, the pressure sensors and the leakage detection sensors which are positioned on the inner wall of the main cabin body and have different heights and different positions monitor the pressure change and the content of the tracer gas in the main cabin body in real time, the collected data are timely returned to the analysis display screen for storage, recording and analysis, and after the gas pressure in the main cabin body reaches a specified value, the analysis display screen performs analysis and calculation according to the collected data to obtain the leakage rate of the detected gas sealing element.
2. The gas sealing performance detection device according to claim 1, wherein water mist pressurizers connected with the analysis display screen are symmetrically arranged on two sides of the top of the inner wall of the main cabin body and used for forming mist and adjusting the air humidity in the main cabin body;
the main cabin body is provided with a water inlet, one end of the water inlet is connected with the water mist pressurizer through a water inlet pipeline, and the other end of the water inlet is connected with the water tank.
3. The apparatus according to claim 2, wherein a humidity sensor is disposed in the main chamber, and connected to the analysis display screen for detecting the internal humidity of the main chamber.
4. The apparatus for detecting gas sealing performance according to claim 1, wherein a light source connected to the analysis display screen is disposed at a middle position of the top of the inner wall of the main chamber body for providing illumination to the inside of the main chamber body;
and a reflector is arranged right above the light source and used for collecting all the light of the light source to the position of the gas sealing element.
5. The apparatus for detecting gas sealing performance according to claim 4, wherein a light intensity detecting sensor is disposed in the main chamber, and connected to the analyzing display screen for detecting the internal illumination intensity of the main chamber.
6. The gas sealing performance detection device according to claim 1, wherein an exhaust pipeline is arranged at the bottom of the main cabin body, a filter is connected to one end of the exhaust pipeline positioned inside the main cabin body, and an exhaust hole sealing cover is connected to one end of the exhaust pipeline positioned outside the main cabin body;
the main cabin body is also provided with a power interface for supplying power to the detection device and a data transmission hole for transmitting data with the outside.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041524.8A CN109489915B (en) | 2019-01-16 | 2019-01-16 | Gas sealing performance detection device and using method thereof |
| PCT/CN2019/121689 WO2020147435A1 (en) | 2019-01-16 | 2019-11-28 | Gas sealing performance detection device and method for using same |
Applications Claiming Priority (1)
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| CN109489915B (en) * | 2019-01-16 | 2022-02-22 | 山东科技大学 | Gas sealing performance detection device and using method thereof |
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| CN116631159B (en) * | 2023-07-20 | 2023-10-10 | 菏泽市金沃泰化工有限公司 | Dangerous chemical leakage protection alarm device |
| CN117455243B (en) * | 2023-12-07 | 2024-03-12 | 徐州紫聚石化设备有限公司 | Gas leakage detection system based on chemical tail gas storage tank |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3725063A1 (en) * | 1987-07-29 | 1989-02-09 | Continental Ag | Leakage detecting system |
| KR20120121280A (en) * | 2011-04-26 | 2012-11-05 | 조선대학교산학협력단 | The crack and flaw detection device for high pressure and high temperature vessel |
| CN103575475A (en) * | 2012-08-09 | 2014-02-12 | 北汽福田汽车股份有限公司 | Vehicle sealing performance detecting device and method |
| CN106017817A (en) * | 2016-05-17 | 2016-10-12 | 中广核检测技术有限公司 | Secondary side system for helium mass spectrum leakage detection equipment for heat-transfer pipe of nuclear steam generator |
| CN107389270A (en) * | 2017-08-21 | 2017-11-24 | 浙江出入境检验检疫局检验检疫技术中心 | Infrared thermal imaging gas-tight tester |
| CN206832728U (en) * | 2017-06-26 | 2018-01-02 | 武汉华威专用汽车检测有限责任公司 | A kind of thermodynamic test cabin for being used to detect the heat-insulated air-tightness of refrigerated vehicle carriage and leak source |
| CN107907278A (en) * | 2017-10-30 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of method for conducting leak test of power transformer oil conservater capsule |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282182Y (en) * | 1996-09-09 | 1998-05-20 | 贾正余 | Detector for leakage position of container |
| CN1991324A (en) * | 2005-12-28 | 2007-07-04 | 陈乃克 | Method for detecting leakage of sealed object by using infrared imaging technique |
| JP4665004B2 (en) * | 2008-02-25 | 2011-04-06 | カヤバ工業株式会社 | Leak inspection apparatus and leak inspection method |
| CN109489915B (en) * | 2019-01-16 | 2022-02-22 | 山东科技大学 | Gas sealing performance detection device and using method thereof |
-
2019
- 2019-01-16 CN CN201910041524.8A patent/CN109489915B/en active Active
- 2019-11-28 WO PCT/CN2019/121689 patent/WO2020147435A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3725063A1 (en) * | 1987-07-29 | 1989-02-09 | Continental Ag | Leakage detecting system |
| KR20120121280A (en) * | 2011-04-26 | 2012-11-05 | 조선대학교산학협력단 | The crack and flaw detection device for high pressure and high temperature vessel |
| CN103575475A (en) * | 2012-08-09 | 2014-02-12 | 北汽福田汽车股份有限公司 | Vehicle sealing performance detecting device and method |
| CN106017817A (en) * | 2016-05-17 | 2016-10-12 | 中广核检测技术有限公司 | Secondary side system for helium mass spectrum leakage detection equipment for heat-transfer pipe of nuclear steam generator |
| CN206832728U (en) * | 2017-06-26 | 2018-01-02 | 武汉华威专用汽车检测有限责任公司 | A kind of thermodynamic test cabin for being used to detect the heat-insulated air-tightness of refrigerated vehicle carriage and leak source |
| CN107389270A (en) * | 2017-08-21 | 2017-11-24 | 浙江出入境检验检疫局检验检疫技术中心 | Infrared thermal imaging gas-tight tester |
| CN107907278A (en) * | 2017-10-30 | 2018-04-13 | 广西电网有限责任公司电力科学研究院 | A kind of method for conducting leak test of power transformer oil conservater capsule |
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| WO2020147435A1 (en) | 2020-07-23 |
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