CN220568624U - Detection device for permeability of hydrogen-containing natural gas pipeline component - Google Patents
Detection device for permeability of hydrogen-containing natural gas pipeline component Download PDFInfo
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Abstract
The utility model provides a detection device for the permeability of a hydrogen-containing natural gas pipeline component, which solves the technical problems that the existing hydrogen-containing natural gas permeability detection precision is limited by detection environments and the detection environments are poor in universality. Comprising the following steps: the box member kit is used for combining and forming a sealed box body for containing the part to be detected and transparent liquid for immersing the part to be detected; the rubber gasket sleeve is used for carrying out fit sealing on a fit gap between a component part of a part to be detected and a box body component; the environment light source is used for forming uniform illuminance of the part to be detected in the sealed space; the waterproof camera is used for collecting images from the surface of the controlled surface facing the part to be detected and outputting the images; and the communication module is used for establishing a data transmission channel between the active equipment and the data processing equipment in the sealed space. The structure has higher applicability and detection precision. The method can be used for quantitative detection, can also be used for positioning the permeation position, and provides references for experimental simulation and engineering practice. The method can be used for laboratory simulation and engineering practice.
Description
Technical Field
The utility model relates to the technical field of gas detection, in particular to a detection device for the permeability of a hydrogen-containing natural gas pipeline component.
Background
Hydrogen is an important carrier for converting energy structures of China into green low carbon, and is becoming more and more concerned and valued, and the existing natural gas pipe network is utilized for conveying and becomes a reliable way for conveying hydrogen, but no matter pure hydrogen is conveyed or hydrogen is conveyed, the possibility that gas permeates from a pipeline exists, especially town gas pipe networks are complex in distribution compared with long conveying pipelines, connectors and sealing elements are more, and in addition, the hydrogen is smaller than a methane molecular structure, so that permeation and other reasons are easy to occur in a pipe body, the connectors and the sealing elements, pipeline leakage is easy to occur, and if timely diffusing treatment is not available, potential safety hazards are easy to form in a closed space. The main technical means for permeability detection in the prior art is usually a drainage method, an air pressure method, a fluorescence method or a packaging method. The drainage method indirectly obtains the gas permeation volume and the gas permeability through the liquid level change caused by permeation gas. The air pressure method is used for detecting the air pressure or the air content change in the sealed space inside or outside the pipe simultaneously, and the air permeability is calculated according to the air pressure or the air content change. The fluorescence method is usually combined with the light leakage phenomenon, namely, a device with fluorescent powder is arranged outside the flange, and if the flange leaks, the movement of the fluorescent powder can be observed through the light leakage phenomenon. The wrapping method is to arrange a layer of wrapping outside the flange connection, and if leakage occurs at the flange connection part, the wrapping bulges. The leakage detection method does not have a general detection structure of the permeability of the pipe fitting and the flange connecting piece, and when accurate detection is realized, a high-pressure or vacuum sealing space is mostly required to be constructed outside a detection object, the structure is complex, the time consumption is long, the detection requirement is high, and the leakage position is difficult to position. How to consider laboratory simulation conditions and engineering field reality, effectively acquire permeability information, and process timely information to realize accurate permeability evaluation.
Disclosure of Invention
In view of the above problems, the embodiment of the utility model provides a detection device for the permeability of a hydrogen-containing natural gas pipeline component, which solves the technical problems that the existing detection method and device are complex in structure, poor in universality and difficult to position a permeation position.
The utility model relates to a device for detecting the permeability of a hydrogen-containing natural gas pipeline component, which comprises:
the box member kit is used for combining and forming a sealed box body for containing the part to be detected and transparent liquid for immersing the part to be detected;
the rubber gasket sleeve is used for carrying out fit sealing on a fit gap between a component part of a part to be detected and a box body component;
the environment light source is used for forming uniform illuminance of the part to be detected in the sealed space;
the waterproof camera is used for collecting images from the surface of the controlled surface facing the part to be detected and outputting the images;
and the communication module is used for establishing a data transmission channel between the active equipment and the data processing equipment in the sealed space.
In an embodiment of the present utility model, the method further includes:
the temperature sensor is used for collecting the ambient temperature in the sealed space and outputting data;
the thermostat module is used for controlling operation to keep the ambient temperature in the sealed space constant;
and the backup power supply is used for providing working voltage for active equipment in the sealed space.
In one embodiment of the present utility model, the box member kit includes an upper box member and a lower box member, the upper box member and the lower box member being joined at their side wall edges to form a sealed box.
In one embodiment of the utility model, a pair of coaxial through holes are formed in opposite side walls of the sealing box body, and the side walls of the coaxial through holes are formed by a rubber gasket sleeve to form an adaptive seal between the component parts of the part to be detected and the coaxial through holes.
In one embodiment of the utility model, the rubber gasket kit includes an upper rubber gasket and a lower rubber gasket, the upper rubber gasket and the lower rubber gasket end being adapted to form a complete rubber gasket.
In an embodiment of the utility model, the sealing box body is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively provided with a water inlet plug and a water outlet plug.
In one embodiment of the utility model, a waterproof camera is arranged on the inner side wall of the sealed box body around the part to be detected.
In one embodiment of the utility model, at least one waterproof camera is arranged on the upper part and the lower part of each inner side wall of the sealed box body.
In one embodiment of the utility model, an ambient light source is arranged on the inner side wall of the sealed box body around the part to be detected
In an embodiment of the utility model, the ambient light source and the waterproof camera are arranged in a pairing way, and the ambient light source adopts a diffuse reflection lens.
The detection device for the permeability of the hydrogen-containing natural gas pipeline component provides a detection structure for different detection objects for application of an image recognition technology through a water-proof method, a high-speed industrial camera and an ambient light source. The structure has higher applicability and detection precision, and can be suitable for various single detection objects and composite detection objects. The method can be used for quantitative detection, can also be used for positioning the permeation position, and provides references for experimental simulation and engineering practice. Simple structure need not to construct sealed high pressure or vacuum space, and the transportation of being convenient for easily mass production, operating threshold is low. The method can be used for laboratory simulation under ideal conditions, and can also be used for engineering practice, and on-site detection of permeability or sealing performance change caused by third party damage or natural disasters can be developed.
Drawings
Fig. 1 is a flow chart of a method for detecting permeability of a hydrogen-containing natural gas pipeline component according to an embodiment of the utility model.
Fig. 2 is a schematic diagram of an architecture of a device for detecting permeability of a hydrogen-containing natural gas pipeline component according to an embodiment of the present utility model.
Fig. 3 is a schematic top sectional view of a device for detecting permeability of a hydrogen-containing natural gas pipeline component according to an embodiment of the present utility model.
Fig. 4 is a schematic diagram showing an axial cross-sectional structure of a device for detecting permeability of a hydrogen-containing natural gas pipeline member according to an embodiment of the present utility model.
Detailed Description
The present utility model will be further described with reference to the drawings and the detailed description below, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
A method for detecting the permeability of a hydrogen-containing natural gas pipeline component according to an embodiment of the utility model is shown in FIG. 1. In fig. 1, the present embodiment includes:
step 10: a sealed space is formed for accommodating the part to be detected.
The site to be inspected includes, but is not limited to, a single natural gas pipeline body, connectors, seals, and a complete assembly formed therebetween. The complete assembly structure can be used for independently forming the sealing cavity, or can be a part of the sealing cavity. For example, two coaxial pipes are connected with a through pipe formed by a connecting flange, and a part of the through pipe comprising the connecting flange is used as a part to be detected.
The sealed space may be formed by orderly constructing the combined parts. The combination parts are replaceable, and the similarity changes of the size, the volume and the outline can be formed through the model replacement of the combination parts. The purpose of this similarity change is to accommodate the site to be inspected and to ensure a spatial tightness against the site to be inspected.
Step 20: and injecting transparent liquid into the sealed space to submerge the part to be detected, and initializing image acquisition.
The transparent liquid is selected according to the measurement requirements for the permeated gas bubbles. Measurement requirements include, but are not limited to, liquid viscosity to adjust the gas dispersion rate or elimination of gas wall built-up phenomena on the side wall of the site to be inspected. For example, the transparent liquid includes a glycol solution, a glycerin solution, or soft water at a specific concentration.
In an embodiment of the utility model, the prior art is used to consider the injection and discharge channels for keeping the transparent liquid stable as soon as possible in the sealed space, and the thermostatic control measures of the transparent liquid are also needed to be considered.
Step 30: and carrying out bubble image acquisition in the transparent liquid facing the part to be detected.
The bubble image acquisition quality is required to be ensured while the flooding of the part to be detected is ensured. That is, in order to avoid image acquisition distortion, the camera lens needs to be immersed in transparent liquid, and the ambient light source forms diffuse reflection.
The acquisition frequency of the bubble image can be preset or dynamically adjusted. The bubble image may form a sequence of bubble images according to the timing characteristic and the coordinate characteristic.
In an embodiment of the utility model, the preferred power supply circuit structure, signal output circuit structure of cameras and ambient light sources and other related functional circuits need to be considered in the sealed space by utilizing the prior art.
Step 40: and controlling an image acquisition process, and carrying out feature statistics according to the bubble features in the bubble image to form permeability evaluation.
The bubble feature extraction can be performed on the bubble image using image recognition techniques. Bubble characteristics include, but are not limited to, initial position, initial volume, graduated volume, volume gradual rate, graduated transfer path, graduated transfer rate, and the like. Image recognition techniques include, but are not limited to, image segmentation algorithms, object detection algorithms, shape recognition algorithms, and the like.
In one embodiment of the present utility model, a data processing hardware architecture is needed that takes into account bubble feature processing and the formation of percolation feature statistics using prior art techniques. The computational and memory resources of DSP (Digital Signal Processor) digital signal processors, FPGA (Field-Programmable Gate Array) Field programmable gate arrays, MCU (Microcontroller Unit) system boards, soC (system on a chip) system boards, or PLC (Programmable Logic Controller) minimum system-formed image recognition techniques including I/O and feature statistics processes may be employed.
The method for detecting the permeability of the hydrogen-containing natural gas pipeline component can detect the permeability of the pipeline body, the pipeline connecting piece and the sealing piece by utilizing the suitability of the detection closed space, and avoids the limitation of the singleness of a detection object. The quantitative detection of the leakage amount of the hydrogen-containing natural gas pipeline body, the connecting piece and the sealing piece is realized by fully utilizing the computer image processing technology, the volume of the permeated gas is directly measured, the intermediate links and indirect measurement indexes are reduced, and the accuracy is higher. And the permeability of the natural gas pipeline body, the connecting piece and the sealing piece of the part to be detected is detected simultaneously while the volume of the micro-quantity of the permeation gas is accurately measured. The utility model has strong practicability, not only can be used for laboratory simulation working conditions, but also can be used for engineering field detection, can be used for spreading field detection on permeability or sealing performance change caused by third party damage or natural disasters, and can directly position the leakage position.
As shown in fig. 1, in an embodiment of the present utility model, the method further includes:
step 50: and forming leakage early warning according to the characteristic statistical data.
And setting triggering conditions of the feature statistics data according to a preset bubble feature threshold. And forming leakage early warning by using the triggering condition. Trigger conditions include, but are not limited to, number of generations per unit time, rate of change of volume, generation location, transfer rate, etc. And the automatic alarm can be further automatically given out by utilizing an automatic communication technology according to the leakage early warning.
The method for detecting the permeability of the hydrogen-containing natural gas pipeline component is further applied to permeability detection, and the combination of permeability and leakage early warning is realized by setting a data threshold.
As shown in fig. 1, in an embodiment of the present utility model, step 10 includes:
step 11: the part to be inspected is cleaned before the sealed space is formed.
Transparent liquid in the detection environment is prevented from being polluted and turbid by cleaning the part to be detected.
Step 12: a background color with high contrast with bubble imaging is formed on the inner wall of the sealed space.
The bubble imaging brightness is higher due to the influence of the total reflection phenomenon, and the bubble outline can be highlighted by adopting the background color with high contrast difference, so that the recognition precision is improved. The background color may be a high contrast color, such as gray, at the time of imaging.
Step 13: and acquiring structural data and environmental data of the part to be detected.
The structural data includes, but is not limited to, data of composition, assembly, size, material, etc. of the part to be detected. The environmental data comprise data such as the volume of a sealed space, the arrangement of cameras, the arrangement of temperature sensors, the brightness of the environment, the control parameters of a constant temperature functional circuit and the like which are related to the part to be detected.
The detection method of the permeability of the hydrogen-containing natural gas pipeline component in the embodiment of the utility model optimizes the detection environment to form signal optimization for subsequent imaging data processing. Meanwhile, the acquired structural data and environmental data are utilized to provide necessary basic quantization information for subsequent imaging data processing, so that the fault tolerance and interference elimination capability in data processing are improved.
As shown in fig. 1, in an embodiment of the present utility model, step 20 includes:
step 21: and injecting transparent liquid into the sealed space at a constant speed and standing.
After fully stirring and standing, the transparent liquid is injected into a sealed space at a constant speed and stands, so that no visible tiny bubbles exist in the liquid, and excessive bubble entity interference signals in an initial environment detection environment are avoided.
Step 22: the temperature sensor, ambient light source, camera and associated equipment are powered up and initialized.
The initialization includes, but is not limited to, the initial brightness is adjusted by powering on an ambient light source, the transparent liquid temperature is collected by powering on a temperature sensor, and the focusing parameters are initialized by powering on a camera. The association device comprises a constant temperature device, a data processing device and a communication circuit, wherein the communication circuit forms a communication link between the active device and the data processing device in the sealed space, the data processing device forms initial control for the active device according to the structural data and the environment data, and the active device feeds back the detection initial state to the data processing device.
The comprehensive detection environment formed by the method for detecting the permeability of the hydrogen-containing natural gas pipeline component is close to the part to be detected, the detection object is visual, and the volume of the permeation gas is directly measured by a method combining a water-proof method, a high-speed industrial camera and image recognition, so that the volume of the tiny permeation gas is accurately measured. The intermediate links are reduced, and the permeability of the related devices at the same position is simultaneously detected. The indirect measurement index has higher precision. In combination with image recognition, the leak location can be located directly. Simple structure, easy transportation, and easy mass production and field operation.
As shown in fig. 1, in an embodiment of the present utility model, step 30 includes:
step 31: and periodically acquiring the bubble image on the surface of the part to be detected through the distributed cameras.
The cameras are distributed around the part to be detected, and overlapping of image acquisition visual angles of the adjacent cameras is formed. The method is favorable for establishing stereoscopic vision between related images through a computational graph technology, and further specific spatial shapes or displacement quantification of specific bubble objects in the images are formed.
Step 32: and establishing a bubble image sequence according to the position of the camera and the acquisition frequency.
In one embodiment of the present utility model, the creation of the bubble image sequence uses the following image file naming convention:
imaging time "+" one side camera number "+" the other side camera number "
In the subsequent bubble image data processing process, a data base for establishing stereoscopic vision can be obtained by using the image file name.
According to the method for detecting the permeability of the hydrogen-containing natural gas pipeline component, provided by the embodiment of the utility model, the generation time, the generation position and the bubble morphology of the hydrogen-containing natural gas permeation bubble are acquired through images, the volume of the tiny amount of permeation gas is accurately measured by utilizing the image acquisition precision, and the comprehensive permeability detection of the part to be detected is realized.
In an embodiment of the present utility model, further includes:
step 33: and adjusting the acquisition frequency of the appointed camera according to the requirement.
The resolution capability of specific bubble entity objects in the image can be improved by adjusting the acquisition frequency of the designated camera. Especially for the case where there is a set of specific bubble entity objects in the local area that are more dense.
As shown in fig. 1, in an embodiment of the present utility model, step 40 includes:
step 41: the bubble object is determined from the bubble image by a thresholding method.
In the method, firstly, bubbles and a background are separated by the method to obtain a binary image, wherein the pixel value of the bubbles is foreground (white), the pixel value of the background is background (black), and if incomplete or irregularly shaped bubbles are encountered, the bubble image can be operated by expansion, corrosion, connected area filling and other methods to remove noise, fill holes or connect the separated bubbles.
In an embodiment of the utility model, the OpenCV software is adopted for implementation, and the OpenCV self-contained target tracking algorithm can also identify the generation position of the bubbles, and then the detection object model in the data analysis module is combined to provide a reference for the leakage position of the detection object. The data analysis module is connected with the OpenCV through designed software, and can transmit images to the OpenCV so as to realize the functions of image reading, image preprocessing, image segmentation, target detection, bubble shape recognition, volume calculation, output and the like, and the OpenCV also carries out analysis and calculation on irregularly-shaped bubbles by adopting a self-adaptive threshold segmentation method, an edge-based segmentation method, a region-growing-based segmentation method and other methods.
Step 42: and determining the bubble occurrence position according to the bubble object.
And determining the position in the image where the bubble appears by judging the first identifiable time sequence node of the same bubble object in the bubble image sequence as a reference.
Step 43: the bubble volume is formed according to the pixel dimensions of the bubble object.
The number of pixels occupied by the bubble object in the image is calculated, and the volume of the bubble is obtained by multiplying the number of pixels of the bubble by the unit pixel volume.
Step 44: an assessment of the permeability of the hydrogen-containing natural gas is formed from the measured dimensions.
Measurement dimensions include, but are not limited to:
the number of bubbles and/or the volume of bubbles in the unit surface area of the part to be detected;
the number of bubbles and/or the volume of bubbles per unit surface area of the single component;
the number of bubbles and/or the volume of bubbles per unit surface area within the combined range of the component;
number of bubbles per unit surface of the part to be detected per unit time.
The above independent or combined measurement dimensions form a synchronous assessment of the permeability of the whole or the component part of the part to be detected.
According to the method for detecting the permeability of the hydrogen-containing natural gas pipeline component, provided by the embodiment of the utility model, the high-precision identification of the bubble object is carried out in the bubble image, the volume of the tiny amount of permeation gas is accurately measured, and the accurate assessment of the permeability formed by bubbles with different volumes is realized.
In an embodiment of the present utility model, further includes:
step 45: and forming a regulating and controlling signal of the constant temperature equipment according to feedback data of the temperature sensor, and adjusting the environmental temperature in the sealed space to be constant.
In an embodiment of the present utility model, further includes:
step 46: and forming leakage statistical data according to the bubble entity generation speed, the bubble entity density and the bubble entity generation position in the current bubble image.
The leakage statistics can be used for quantitative description of leakage degree of the part to be detected. To quantify the reliability and potential use risks of the individual components, assembled components.
In an embodiment of the present utility model, further includes:
step 47: and performing bubble form correction by matching related bubble images of the same bubble object in the bubble image sequence, and correcting the bubble volume according to the corrected bubble object form.
And forming a three-dimensional correction image for the same bubble object by utilizing related bubble images acquired by adjacent cameras in a bubble image sequence in a specified time sequence, and correcting the volume calculation of irregular bubbles, so that the permeability detection precision is improved.
In an embodiment of the present utility model, further includes:
step 48: and forming camera imaging frequency adjustment data according to the bubble density.
The bubble density can be determined by quantitative factors such as spatial extent, surface area, rate of formation, etc.
In order to ensure the identification accuracy of the bubble object in the bubble imaging, the frequency adjustment data is used for adjusting the discrete requirement of the bubble object in the bubble image.
As shown in fig. 1, in an embodiment of the present utility model, step 50 includes:
step 51: judging the hazard level of the leakage statistical data according to the leakage threshold value, forming leakage early-warning data according to the hazard level, and forming alarm level data according to the leakage early-warning data.
And quantifying the structural strength of the part to be detected by utilizing the structural data of the part to be detected, quantifying the structural failure risk by utilizing the leakage statistical data, and dividing the structural failure urgency by utilizing the leakage threshold value to form leakage early warning data. Thereby forming targeted alarm grade data.
The device for detecting the permeability of the hydrogen-containing natural gas pipeline component comprises:
the storage is used for storing program codes corresponding to the processing process of the detection method of the permeability of the hydrogen-containing natural gas pipeline component;
a processor for executing the program codes corresponding to the processing procedure of the method for detecting the permeability of the hydrogen-containing natural gas pipeline component
An apparatus for detecting permeability of a hydrogen-containing natural gas pipeline component according to an embodiment of the present utility model is shown in fig. 2. In fig. 2, the present embodiment includes:
and the detection data processing module 4 is used for controlling the image acquisition process, carrying out characteristic statistics according to the bubble characteristics in the bubble image, and forming permeability evaluation.
As shown in fig. 2, in an embodiment of the present utility model, the detection data processing module 4 includes:
an image dividing unit 4a for determining a bubble object from the bubble image by a threshold dividing method;
an object positioning unit 4b for determining a bubble occurrence position from the bubble object;
a volume estimation unit 4c for forming a bubble volume according to the pixel scale of the bubble object;
and a permeation evaluation unit 4d for forming a permeation rate evaluation of the hydrogen-containing natural gas according to the measurement dimension.
As shown in fig. 2, in an embodiment of the present utility model, the method further includes:
and the constant temperature control unit 4e is used for forming a regulating and controlling signal of the constant temperature equipment according to the feedback data of the temperature sensor, and adjusting the environmental temperature in the sealed space to be constant.
As shown in fig. 2, in an embodiment of the present utility model, the method further includes:
and a leakage statistics unit 4f for forming leakage statistics data according to the bubble entity generation speed and the bubble entity density in the current bubble image and the bubble entity generation position.
As shown in fig. 2, in an embodiment of the present utility model, the method further includes:
and a volume correction unit 4g for performing bubble shape correction by matching the related bubble images of the same bubble object in the bubble image sequence, and correcting the bubble volume according to the corrected bubble object shape.
And a frequency adjusting unit 4h for forming camera imaging frequency adjusting data according to the bubble density.
As shown in fig. 2, in an embodiment of the present utility model, the method further includes:
and the early warning module 5 is used for forming leakage early warning according to the characteristic statistical data.
As shown in fig. 2, in an embodiment of the present utility model, the early warning module 5 includes:
the hierarchical alarm unit 5a is configured to determine a hazard level of the leakage statistical data according to the leakage threshold, form leakage early-warning data according to the hazard level, and form alarm level data according to the leakage early-warning data.
According to the technical scheme, the computer image recognition technology can recognize, locate and measure the specific object in the acquired image. How to effectively collect the permeability information and process the information in time to realize accurate assessment of the permeability, a targeted monitoring information collection and transmission technical scheme is required to be formed, so that the full play of the image pattern recognition capability of the computer pattern technology is realized.
The structure of the device for detecting the permeability of the hydrogen-containing natural gas pipeline component is shown in fig. 3 and 4. As shown in fig. 3 and 4, the data connection between the present embodiment and the data processing device is performed by a wired or wireless method, which includes:
the case member kit 110 is used to form a sealed case (i.e., a sealed space) containing the portion to be detected and the transparent liquid immersing the portion to be detected in combination.
The case member kit includes a container member forming a single sealed cavity. The container members may be serialized to accommodate the size, volume requirements of a single sealed cavity.
The rubber gasket sleeve 120 is used for sealing fit gaps between the component parts of the part to be detected and the box body component in an adapting manner.
The component parts of the part to be detected can be single connecting pieces or sealing pieces, and the component parts and the detecting instrument are integrally accommodated in the sealing box body according to a preset assembly structure, and a rubber gasket sleeve is not needed. The component of the part to be detected may be an assembly structure formed between the pipe fitting 102 and the connecting piece 103 or the sealing piece, the part to be detected is a part of the assembly structure, and when the extension length of the pipe fitting obviously exceeds the size of the sealing space in the sealing box body, the corresponding rubber gasket sleeve and the box body member are utilized to carry out adaptive sealing on the pipe fitting comprising the part to be detected, so as to seal the matching gap. The rubber gasket kit may be serialized according to mating slit size.
An ambient light source 130 for forming uniform illuminance of a portion to be detected in the sealed space.
The ambient light source may be a diffuse reflective light source. The color temperature of the diffuse reflection light source is predetermined.
The waterproof camera 140 is used for collecting images from the surface of the controlled surface facing the part to be detected and outputting the images.
The waterproof camera has adjustable acquisition frequency. Additional naming and encoding operations can be performed when packaging the image, depending on the specific model of signal processing capabilities. The waterproof camera adopts a high-speed industrial camera with a waterproof function.
And a communication module 150, configured to establish a data transmission channel between the active device and the data processing device 190 in the sealed space.
Wireless data transmission channels as a reasonable alternative to wired transmission channels, wireless communication modules of bluetooth technology, NFC technology, NB-IoT or WiFi technology may be employed. And establishing a data link between the active equipment and the data processing equipment in the sealed space through the wireless data transmission channel.
The device for detecting the permeability of the hydrogen-containing natural gas pipeline component provides a detection structure for different detection objects for application of an image recognition technology through a water-proof method, a high-speed industrial camera and an ambient light source. The structure has higher applicability and detection precision, and can be suitable for various single detection objects and composite detection objects. The method can be used for quantitative detection, can also be used for positioning the permeation position, and provides references for experimental simulation and engineering practice. Simple structure need not to construct sealed high pressure or vacuum space, and the transportation of being convenient for easily mass production, operating threshold is low. The method can be used for laboratory simulation under ideal conditions, and can also be used for engineering practice, and on-site detection of permeability or sealing performance change caused by third party damage or natural disasters can be developed.
As shown in conjunction with fig. 3 and 4, in an embodiment of the present utility model, the method further includes:
and a temperature sensor 160 for acquiring the ambient temperature in the sealed space and outputting data.
The temperature sensor outputs a temperature signal through analog-to-digital conversion.
A thermostat module 170 for controlled operation to maintain the ambient temperature within the enclosed space constant.
The thermostat module can be matched with the semiconductor refrigerating sheet by adopting a ceramic heating element to realize automatic constant temperature, and can also be realized by adopting circulating heating and refrigerating equipment externally connected through a water pipe. And (3) keeping the temperature constant according to control data formed by feeding back the temperature signal by the data processing equipment.
A backup power supply 180 for providing an operating voltage for the active devices in the enclosed space.
The device for detecting the permeability of the hydrogen-containing natural gas pipeline component can be more suitable for the utilization of engineering environment and overcomes the influence of severe environmental climate on detection precision.
As shown in fig. 3 and 4 in combination, in one embodiment of the present utility model, the case member kit includes an upper case member 111 and a lower case member 112, the side wall edges of the upper case member 111 and the lower case member 112 are combined to form a sealed case (i.e., a sealed space), the edge profiles of the combined side walls are adapted, and the upper case member 111 and the lower case member 112 are tightly fixed by the mating latch structures 113 of the combined side wall edges.
In one embodiment of the utility model, the edge profile adaptation of the joined side walls is manifested by the edge sections of the joined side walls snapping or intermeshing.
In one embodiment of the utility model, a sealing coating or bead seal is disposed on the edge of the bonded sidewall.
In an embodiment of the present utility model, as shown in fig. 3 and 4, a pair of coaxial through holes are formed in opposite side walls of the sealing case, and an adaptive seal between the component parts of the portion to be tested and the coaxial through holes is formed in the side walls of the coaxial through holes by a rubber gasket kit.
In one embodiment of the utility model, the rubber gasket kit includes an upper rubber gasket 121 and a lower rubber gasket 122, the upper and lower rubber gasket ends being adapted to form a complete rubber gasket.
In one embodiment of the utility model, the rubber gasket kit includes a stacked upper rubber gasket and a stacked lower rubber gasket, with corresponding stacked upper and lower rubber gasket ends fitting.
Referring to fig. 3 and 4, in an embodiment of the present utility model, a water inlet (not shown) at the top and a water outlet at the bottom are formed in a sealed case, and a water inlet plug and a water outlet plug are respectively disposed on the water inlet and the water outlet.
In one embodiment of the utility model, a simplified sealed box with an open top can be formed, and a water outlet plug are arranged at the bottom of the sealed box.
The sealing box structure can ensure tightness and applicability to detection components and structures in the detection process.
As shown in fig. 3 and 4, in an embodiment of the present utility model, a waterproof camera 140 is disposed on an inner sidewall of the sealing case 101 around a portion to be detected.
In one embodiment of the utility model, the part to be detected is positioned in the center of the sealed box, and at least one waterproof camera is arranged on the upper part and the lower part of each side wall of the sealed box. And overlapping adjacent acquisition visual angles when image acquisition is formed so as to acquire the information dimension of the same imaging position.
Referring to fig. 3 and 4, in an embodiment of the present utility model, an ambient light source 130 is disposed on an inner sidewall of the sealed case around a portion to be detected.
In an embodiment of the utility model, the ambient light source and the waterproof camera are arranged in a pairing way, and the ambient light source adopts a diffuse reflection lens so as to obtain uniform illumination in the sealed space.
As shown in connection with fig. 3 and 4, in one embodiment of the present utility model, a temperature sensor 160, a thermostat module 170, and a backup power source 180 are provided on the inside wall of the sealed housing.
In one embodiment of the utility model, a communication module is arranged on the outer side wall of the sealed box body, an upper connecting channel side of the communication module forms a data link with the data processing equipment, and a lower connecting channel side of the communication module forms a data link with an ambient light source, a waterproof camera, a temperature sensor and a thermostat module in the sealed box body.
In one embodiment of the present utility model, the communication module is formed by a universal wired serial communication module and an adaptive peripheral circuit. The communication module is electrically connected with the active components in the sealed box body through wire passing or jumper wires on the side walls.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims (10)
1. A device for detecting permeability of a hydrogen-containing natural gas pipeline member, comprising:
the box member kit is used for combining and forming a sealed box body for containing the part to be detected and transparent liquid for immersing the part to be detected;
the rubber gasket sleeve is used for carrying out fit sealing on a fit gap between a component part of a part to be detected and a box body component;
the environment light source is used for forming uniform illuminance of the part to be detected in the sealed space;
the waterproof camera is used for collecting images from the surface of the controlled surface facing the part to be detected and outputting the images;
and the communication module is used for establishing a data transmission channel between the active equipment and the data processing equipment in the sealed space.
2. The apparatus for detecting permeability of a hydrogen-containing natural gas pipeline member according to claim 1, further comprising:
the temperature sensor is used for collecting the ambient temperature in the sealed space and outputting data;
the thermostat module is used for controlling operation to keep the ambient temperature in the sealed space constant;
and the backup power supply is used for providing working voltage for active equipment in the sealed space.
3. The apparatus for detecting permeability of a hydrogen-containing natural gas pipeline member according to claim 1, wherein the box member kit comprises an upper box member and a lower box member, and side wall edges of the upper box member and the lower box member are combined to form a sealed box.
4. A device for detecting the permeability of a hydrogen-containing natural gas pipeline member according to claim 3, wherein a pair of coaxial through holes are formed in opposite side walls of the sealing case, and an adaptive seal between the constituent parts of the portion to be detected and the coaxial through holes is formed in the side walls of the coaxial through holes by a rubber gasket kit.
5. The apparatus for detecting permeability of a hydrogen-containing natural gas pipeline member according to claim 4, wherein the rubber gasket kit comprises an upper rubber gasket and a lower rubber gasket, the upper rubber gasket and the lower rubber gasket end being adapted to form a complete rubber gasket.
6. The device for detecting the permeability of a hydrogen-containing natural gas pipeline component according to claim 3, wherein the sealing box body is provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively provided with a water inlet plug and a water outlet plug.
7. A device for detecting the permeability of a hydrogen-containing natural gas pipeline member as claimed in claim 3, wherein a waterproof camera is provided on the inner side wall of the sealing case around the portion to be detected.
8. The apparatus for detecting permeability of hydrogen-containing natural gas pipeline components according to claim 7, wherein at least one waterproof camera is provided at an upper portion and a lower portion of each inner sidewall of the sealing case.
9. A device for detecting the permeability of a hydrogen-containing natural gas pipeline member as claimed in claim 3, wherein an ambient light source is provided on the inner side wall of the sealed case around the site to be detected.
10. The device for detecting the permeability of a hydrogen-containing natural gas pipeline component according to claim 9, wherein the ambient light source is arranged in a matched mode with the waterproof camera, and the ambient light source adopts a diffuse reflection lens.
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| CN202322186555.7U CN220568624U (en) | 2023-08-15 | 2023-08-15 | Detection device for permeability of hydrogen-containing natural gas pipeline component |
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| CN202322186555.7U CN220568624U (en) | 2023-08-15 | 2023-08-15 | Detection device for permeability of hydrogen-containing natural gas pipeline component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117870971A (en) * | 2024-03-12 | 2024-04-12 | 山西省水利水电工程建设监理有限公司 | Detection device and method for pipeline after butt joint |
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2023
- 2023-08-15 CN CN202322186555.7U patent/CN220568624U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117870971A (en) * | 2024-03-12 | 2024-04-12 | 山西省水利水电工程建设监理有限公司 | Detection device and method for pipeline after butt joint |
| CN117870971B (en) * | 2024-03-12 | 2024-05-14 | 山西省水利水电工程建设监理有限公司 | Detection device and method for pipeline after butt joint |
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