CN114636523B - Carrier gas bin testing device for hydrogen conveying pipeline - Google Patents
Carrier gas bin testing device for hydrogen conveying pipeline Download PDFInfo
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- CN114636523B CN114636523B CN202210534171.7A CN202210534171A CN114636523B CN 114636523 B CN114636523 B CN 114636523B CN 202210534171 A CN202210534171 A CN 202210534171A CN 114636523 B CN114636523 B CN 114636523B
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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
- G01M3/202—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 using mass spectrometer detection systems
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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
- G01M3/222—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 tubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/204—Structure thereof, e.g. crystal structure
- G01N33/2045—Defects
Abstract
The invention discloses a carrier gas bin testing device for a hydrogen conveying pipeline and a multifunctional hydrogen conveying pipeline testing system, which comprises the following components: a carrier gas bin, an inert gas storage unit and a gas detection device; the carrier gas bin comprises two semi-cylindrical sleeves, a sealing element and a fastening piece, wherein the two semi-cylindrical sleeves can be buckled outside a test tube to be tested, the sealing element is arranged inside the semi-cylindrical sleeves and is used for sealing between the two semi-cylindrical sleeves and the test tube to be tested, and the fastening piece is used for fixedly connecting the two semi-cylindrical sleeves; the inert gas storage unit is connected with the carrier gas bin through an inert gas transmission pipeline and is used for introducing inert gas into the carrier gas bin; the gas detection device is communicated with the carrier gas bin and is used for detecting gas to be detected; the gas to be detected is inert gas entering the carrier gas bin through an inert gas transmission pipeline or mixed gas of the inert gas and gas leaking into the carrier gas bin in the test tube to be detected. The carrier gas bin testing device improves the gas detection precision and also avoids the problem that the carrier gas bin testing device is difficult to install when a vacuum bin is used for detection.
Description
Technical Field
The invention relates to the technical field of pipeline tests, in particular to a carrier gas bin testing device for a hydrogen conveying pipeline.
Background
The hydrogen energy has the characteristics of various sources, cleanness, low carbon, high utilization efficiency and the like, and the safe and economic transportation is one of key links of the development of the hydrogen energy. The technology of pipeline transportation of hydrogen is widely studied at home and abroad. The in-situ mechanical properties of pipeline steels such as X52, X65, X100 and the like in pure hydrogen environment are studied by the institutions such as the national institute of standards and technology and the like, and the mechanical property test of the pipeline steels is carried out by the university of nine states of Japan and the Korean institute of standards and science in pure hydrogen and simulated hydrogen-doped natural gas environment, and the mechanical property test of the pipeline steels is carried out by the university of Zhejiang in real natural gas hydrogen-doped environment.
The natural gas pipe network in China has wide distribution range and large construction scale, and the current pipeline conveying technology is mature, so that the utilization of in-service natural gas pipelines or newly-built pipelines for conveying hydrogen is the best way for large-scale economic conveying and utilization of hydrogen energy in the future. However, the hydrogen has the dangerous characteristics of small molecule, low ignition energy, wide combustion range, easy leakage, inflammability, explosiveness, hydrogen embrittlement of materials and the like, and the pipeline materials have various types and large pipe diameter range, and the hydrogen can generate a series of new technical and safety problems through in-service natural gas pipeline or newly-built pipeline transportation, and mainly comprises the following components:
(1) The hydrogen molecules are small, the diffusion is quick, and when the hydrogen is transported by utilizing in-service or newly-built pipelines, the pipes, parts, equipment and the like can face larger hydrogen leakage/seepage risks;
(2) The hydrogen ignition energy is low, the hydrogen is inflammable and explosive, the leaked hydrogen accumulates in a limited space to cause great potential safety hazard, and if the hydrogen meets open fire, the hydrogen can cause serious damage to the safety of surrounding life and property;
(3) The compatibility problem exists between the in-service or newly-built hydrogen conveying pipelines, parts and related equipment thereof and hydrogen/hydrogen-doped natural gas, and the doping of the hydrogen can lead the pipes, the parts or the equipment (such as compressors, mixing equipment, separating equipment, metering equipment and the like) to be in premature failure, so that serious safety accidents are caused;
(4) The pressure range of the pipeline is wide, the temperature and load environments are changeable, the service condition is complex, and great challenges are provided for the prediction regulation and control of the hydrogen-doped pipeline;
(5) Hydrogen leakage, and hydrogen compatibility detection technology of pipelines and accessories thereof under complex service conditions are lacking.
The effect of simulated hydrogen-loaded natural gas on materials has been studied in japan, the united states, korea, etc., but to ascertain the actual effect of pure hydrogen/hydrogen loading on pipes, components and systems, systematic testing should be performed in a true flow-through pure hydrogen/hydrogen loading environment, but there is still a lack of related testing equipment and methods in China.
Representative achievements in the related fields in China at present are as follows: the invention patent CN201880062655.8 ' leakage detection positioning system and method ', the CN200520131844.6 ' special data collector for oil pipeline leakage monitoring ', the 202110654808.1 ' an experiment system and method for middle-low pressure hydrogen-containing pipelines ', the invention patent 202011477933.1 ' an transportation and separation system for hydrogen-doped natural gas and a control method thereof. These systems and methods are only cut in from monitoring of the leak points, or only design the flow of blending, delivery and separation and purification techniques during the delivery of the hydrogen loading/pure hydrogen pipeline, or do not specifically consider and design the characteristics of the hydrogen, the influence of the hydrogen on the pipeline, and the prevention of the consequences of pipeline hydrogen failure.
Therefore, in order to realize the large-scale safe application of the pure hydrogen/hydrogen-doped pipeline, the problems faced above need to be solved, and a hydrogen conveying pipeline testing device is established.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present invention is to propose a carrier gas cartridge testing device for a hydrogen delivery pipe, comprising: a carrier gas bin, an inert gas storage unit and a gas detection device;
the carrier gas bin comprises two sleeves, a sealing piece and a fastening piece, wherein the two sleeves can be buckled outside a test tube to be tested, the sealing piece is arranged inside the sleeve and is used for sealing between the two sleeves and the test tube to be tested, and the fastening piece is used for fixedly connecting the two sleeves;
the inert gas storage unit is connected with the carrier gas bin through an inert gas transmission pipeline and is used for introducing inert gas into the carrier gas bin;
the gas detection device is communicated with the carrier gas bin and is used for detecting gas to be detected;
the gas to be detected is inert gas entering the carrier gas bin through an inert gas transmission pipeline or mixed gas of the inert gas and gas leaking into the carrier gas bin in the test tube to be detected.
The carrier gas bin testing device provided by the embodiment of the invention further comprises a temperature control unit; the temperature control unit comprises a cold and hot medium pipe, a cold and hot medium compressor unit and a temperature sensor, wherein the cold and hot medium pipe is arranged in the carrier gas bin, the cold and hot medium compressor unit is arranged outside the carrier gas bin and is used for introducing cold and hot medium into the cold and hot medium pipe, so that the temperature in the carrier gas bin is controlled in a preset temperature range, and the temperature sensor is used for detecting the temperature in the carrier gas bin.
According to the carrier gas bin testing device provided by the embodiment of the invention, the cooling and heating medium pipe is a copper pipe, and the copper pipe is welded on the inner wall of the carrier gas bin.
According to the carrier gas bin testing device provided by the embodiment of the invention, the inert gas storage unit is an inert gas bottle group, and the inert gas is nitrogen or argon; the gas detection device is a high-precision mass spectrometer.
According to the carrier gas bin testing device provided by the embodiment of the invention, the two sleeves are provided with the straight sections which are contacted with each other, and the semicircular sections which are contacted with the outside of the test tube to be tested; sealing grooves are formed in the straight section and the semicircular section;
the sealing element comprises a straight sealing strip and a semicircular sealing element; the semicircular sealing piece is provided with three layers of sealing rings, wherein the first sealing ring is wedge-shaped, the second sealing ring is O-shaped, and the third sealing ring is hard triangular sealing.
According to the carrier gas bin testing device provided by the embodiment of the invention, the pipeline to be tested further comprises: at least one or more of a valve, a meter, a damage detector, and a connector.
Another object of the present invention is to provide a carrier gas bin testing system for loading a pipeline, including a carrier gas bin testing device, and a pipeline loading module for applying a load to a test pipeline to be loaded, the pipeline loading module including:
the device comprises a connecting bent pipe, a limiting base, a connecting flange, a plugging flange and a load applying device;
the connecting bent pipe is provided with a limit base for stability when the pipeline to be loaded is tested;
the connecting bent pipe is communicated with one end of the to-be-loaded test pipeline through a connecting flange, and the to-be-tested gas is conveyed to the to-be-loaded test pipeline;
the plugging flange is positioned at the other end of the pipeline to be tested and is used for plugging gas; the plugging flange is provided with a plurality of load application ports, and the load application device is connected with the load application ports and applies test load;
according to the carrier gas bin testing system for pipeline loading, which is disclosed by the embodiment of the invention, the carrier gas bin testing device is used for testing the pipeline to be loaded, which is subjected to test load.
A plurality of stop blocks are arranged on the connecting bent pipe, a baffle is arranged on the limit base, and the baffle is abutted with the stop blocks; the limit base also comprises a semi-cylindrical sealing cover which is buckled with the connecting bent pipe and is fixedly connected with the stop block.
According to the carrier gas bin test system for pipeline loading, provided by the embodiment of the invention, 8 load application ports are arranged on the plugging flange in the clockwise direction, and the load application device is connected with the load application ports and provides tensile or compressive load.
A further object of the present invention is to propose a multifunctional hydrogen delivery pipe test system which can use a carrier gas cartridge test device, comprising:
the system comprises an air source, an air metering detection unit, a combustion explosion characteristic test unit, a pipeline hydrogen adaptability test unit, a hydraulic characteristic monitoring unit, a pipeline connecting system and a master control room, wherein the system can perform the following processes under a circulation path: and (3) testing gas mixing, separation, metering and precision in a pure hydrogen/hydrogen-doped pipeline, testing combustion explosion characteristics, testing hydrogen adaptability of in-service/newly-built pipelines and parts under different temperature, pressure and load conditions, detecting defects and leakage of the pipelines and parts thereof, monitoring hydraulic characteristics of a pipeline system and acquiring and managing full-line data. The pipeline hydrogen adaptability test unit comprises a carrier gas bin test device and/or a carrier gas bin test system loaded by a pipeline.
Compared with the prior related art, one or more technical schemes in the embodiment of the invention have at least the following technical effects or advantages:
(1) The carrier gas bin testing device provided by the invention adopts a carrier gas bin mode for leakage detection, so that the detection precision is improved, and the problem that the carrier gas bin testing device is difficult to install when a vacuum bin is used for detection is also avoided;
(2) The carrier gas bin test system for loading the pipelines can rapidly perform series tests of pipelines with different pipe diameters and parts thereof under variable temperature, variable pressure and variable load environments;
(3) The experimental device and the method established by the invention can more comprehensively carry out the experiment of the pure hydrogen/hydrogen-doped long-distance pipeline, can establish a set of more complete experimental system and testing method, and accelerate the development of the transportation technology of the pure hydrogen/hydrogen-doped pipeline;
(4) The testing device and the testing method can reduce the disassembly and the damage of the pipeline, simplify the testing process, improve the testing efficiency and ensure the versatility, the safety and the reliability of the test;
(5) The simulation pipe section with different load conditions can realize the load test of stretching, compressing, bending and the like of 8 degrees of freedom of the pipe section, and the authenticity and the reliability of the test are improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a carrier gas cartridge testing apparatus of the present invention; wherein, fig. 1 (a) is a sectional view of the carrier gas cartridge testing device of the present invention, fig. 1 (b) is a side view of the carrier gas cartridge testing device of the present invention, fig. 1 (c) is a top view of the carrier gas cartridge testing device of the present invention, and fig. 1 (d) is a partially enlarged view of the seal in fig. 1 (c);
FIG. 2 is a schematic diagram of a pipeline loaded carrier gas cartridge test system of the present invention; wherein, fig. 2 (a) is a cross-sectional view of the pipe-loaded carrier gas cartridge testing system of the present invention, fig. 2 (b) is a carrier gas cartridge side view of the carrier gas cartridge testing device of the present invention, and fig. 2 (c) is a schematic view of a limit base of the pipe-loaded carrier gas cartridge testing system of the present invention;
FIG. 3 is a schematic diagram of a multi-functional hydrogen delivery pipeline test system.
Description of the drawings: the first flow meter 111, the second flow meter 112, the third flow meter 113, the first blending device 121, the second blending device 122, the first buffer tank 131, the second buffer tank 132, the third buffer tank 133, the fourth buffer tank 134, the compressor 14, the first valve 151, the second valve 152, the third valve 153, the fourth valve 154, the fifth valve 155, the sixth valve 156, the pressure reducing valve 16, the explosion experiment device 17, the first pressure meter 181, the second pressure meter 182, the third pressure meter 183, the fourth pressure meter 184, the separating device 19, the double-headed rubber flange collar 20, the pipe to be tested 21, the valve 211, the instrument 212, the damage detector 213, the connecting piece 214, the gas detecting device 22, the carrier gas bin 23, the cold and hot media pipe 24, the inert gas storage unit 25, the cold and hot media compressor unit 26, the sealing piece 27, the first sealing ring 271, the second sealing ring 272, the third sealing ring 273, the connecting elbow 31, the stopper 311, the limit base 32, the fixing base 321, the baffle 322, 323, the semi-cylindrical cover 324, the connecting flange 33, the pipe to be tested 361, the loading flange 35, the loading port application load plugging device 36.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
While fig. 1-3 depict preferred embodiments of the present invention, embodiments of the present invention may be embodied in other similar forms and are not limited to the frames and sequences shown in fig. 1-3. More precisely, the implementation procedure given by the present invention is a better way of understanding the technical route of the present invention more thoroughly in the technical field to which the present invention relates.
Except where otherwise defined, 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 in the description and the description of the embodiments of the invention is for the purpose of better describing the steps of the process of the invention and is not intended to be limited to the terminology so described.
The various examples of the disclosed embodiments of the invention may be combined with each other where appropriate.
Fig. 1 is a schematic view of a carrier gas cartridge testing device of the present invention. Fig. 1 (a) is a cross-sectional view of the carrier gas cartridge test device of the present invention, fig. 1 (b) is a side view of the carrier gas cartridge test device of the present invention, fig. 1 (c) is a plan view of the carrier gas cartridge test device of the present invention, and fig. 1 (d) is a partially enlarged view of the seal in fig. 1 (c).
As shown in fig. 1 (a) - (d), an embodiment of the present invention provides a carrier gas bin testing device and a multifunctional hydrogen delivery pipeline testing system, including: the device comprises a carrier gas bin 23, an inert gas storage unit 25 and a gas detection device 22, wherein the carrier gas bin 23 comprises two sleeves, a sealing piece and a fastening piece. The carrier gas chamber 23 is fastened to the test pipe 21 by two semi-cylindrical sleeves according to the haff structure characteristics, and as an application example, the two sleeves of the carrier gas chamber are made of austenitic stainless steel and are connected through bolts on the bolt holes.
The two semi-cylindrical sleeves can be buckled outside the pipeline 21 to be tested, the sealing piece is arranged inside the semi-cylindrical sleeve and used for sealing between the two semi-cylindrical sleeves and the pipeline 21 to be tested, and the fastening piece is used for fixedly connecting the two semi-cylindrical sleeves. Further, the diameter of the through hole on the side face of the carrier gas bin 23 is 800mm, the largest pipeline with the diameter of 800mm can be tested, for the pipeline with the diameter of 400-800 mm, the difference value with the diameter of 800mm is supplemented by adding the double-end rubber flange ferrules 20 at the two ends, and the multi-pipeline detection is realized
The inert gas storage unit 25 is connected to the carrier gas bin 23 through an inert gas transmission pipeline, and is used for introducing inert gas into the carrier gas bin 23.
The gas detection device 22 is communicated with the carrier gas bin 23 and is used for detecting gas to be detected;
the gas to be detected is inert gas entering the carrier gas bin 23 through an inert gas transmission pipeline or mixed gas of the inert gas and gas leaking into the carrier gas bin 23 in the test tube 21 to be detected.
The carrier gas bin testing device provided by the embodiment of the invention further comprises a temperature control unit; the temperature control unit comprises a cold and hot medium pipe 24, a cold and hot medium compressor unit 26 and a temperature sensor, wherein the cold and hot medium pipe 24 is arranged in the carrier gas bin 23, the cold and hot medium compressor unit 26 is arranged outside the carrier gas bin 23 and is used for introducing cold and hot medium into the cold and hot medium pipe 24 so as to control the temperature in the carrier gas bin 23 in a preset temperature range, and the temperature sensor is used for detecting the temperature in the carrier gas bin 23.
According to the carrier gas bin testing device of the embodiment of the invention, the cold and hot medium pipe 24 is a copper pipe, and the copper pipe is welded on the inner wall of the carrier gas bin 23.
According to the carrier gas bin testing device of the embodiment of the invention, the inert gas storage unit 25 is an inert gas bottle group, and the inert gas is nitrogen or argon; the gas detection device 22 is a high-precision mass spectrometer.
According to the carrier gas bin testing device of the embodiment of the invention, the two semi-cylindrical sleeves are provided with flat sections which are contacted with each other, and semi-cylindrical sections which are contacted with the outside of the pipeline 21 to be tested; sealing grooves are formed in the straight section and the semicircular section;
the sealing element comprises a straight sealing strip and a semicircular sealing element; the semicircular sealing piece is provided with three layers of sealing rings, wherein the first sealing ring is wedge-shaped, the second sealing ring is O-shaped, and the third sealing ring is hard triangular sealing. The first sealing ring is higher than the sealing surface, the first sealing surface can be extruded in the middle when the sealing surface is pressed, the second sealing ring is of a main sealing structure, and the third sealing ring is used for preventing the second sealing ring from being extruded.
According to the carrier gas bin testing device of the embodiment of the invention, the test tube 21 to be tested further comprises: at least one or more of a valve 211, a meter 212, a damage detector 213, and a connector 214.
According to the carrier gas bin testing device provided by the embodiment of the invention, the carrier gas bin 23 is buckled on a pipe section to be detected, and the pipe section possibly comprises various valves 211, various meters 212, various connecting pieces 214, other parts and the like; the pipe section is provided with various damage detectors 213 for detecting defects such as cracks, corrosion and the like at the pipe section; after the carrier gas chamber 23 is assembled, the flow of inert gas in the chamber is controlled, and the flux and composition of the inflow and outflow gas are detected by the high-precision mass spectrometer 22, so that the leakage amount and leakage position of the pipe material or parts of the detected pipe section can be judged.
FIG. 2 is a schematic diagram of a pipeline loaded carrier gas cartridge test system of the present invention; fig. 2 (a) is a cross-sectional view of a pipe-loaded carrier gas cartridge test system according to the present invention, fig. 2 (b) is a carrier gas cartridge side view of a carrier gas cartridge test device according to the present invention, and fig. 2 (c) is a schematic view of a limit base of a pipe-loaded carrier gas cartridge test system according to the present invention.
As shown in fig. 2 (a) - (c), an embodiment of the present invention provides a carrier gas bin testing system for loading a pipeline, including a carrier gas bin testing device, and a pipeline loading module for applying a load to a pipeline 21 to be tested, the pipeline loading module including: the connecting elbow 31, the limit base 32, the connecting flange 33, the plugging flange 35 and the load applying device 36.
The limiting base 32 is arranged on the connecting elbow 31 and is used for stabilizing the test tube 21 to be tested under load; the connecting elbow 31 is communicated with one end of the pipeline 21 to be tested through the connecting flange 33 and conveys gas to be tested to the pipeline 21 to be tested; the plugging flange 35 is positioned at the other end of the test tube 21 to be tested and is used for sealing gas; the plugging flange 35 is provided with a plurality of load application ports 361, and the load application device 36 is connected with the load application ports 361 and applies a test load; the carrier gas bin testing device is used for testing the pipeline 21 to be tested, which is applied with a test load.
The load applying device 36 can be a hydraulic unit, and the load can be applied by the hydraulic unit 36, so that the tensile, compression and bending load test of the test pipeline can be realized; it should be noted that the connecting bend 31 is thicker than the test tube, which ensures that loading forces act on the test tube rather than the connecting bend.
According to the carrier gas bin test system for pipeline loading in the embodiment of the invention, a plurality of stop blocks 311 are arranged on the connecting bent pipe 31, a baffle 322 is arranged on the limiting base 32, and the baffle 322 is abutted with the stop blocks 311; the limit base 32 further includes a semi-cylindrical cover 324, and the semi-cylindrical cover 324 is fastened to the connecting elbow 31 and is fixedly connected with the stop block 311.
According to the carrier gas bin test system for pipeline loading, 8 load application ports 361 are arranged on the plugging flange 35 in the clockwise direction, and the load application device 36 is connected with the load application ports 361 and provides tensile or compressive load.
According to the carrier gas bin testing device and the carrier gas bin testing system loaded by the pipeline, the method for testing operation comprises the following specific steps:
(1) Firstly, separating an upper half-cylindrical sleeve and a lower half-cylindrical sleeve of a carrier gas bin 23, and for a section of test tube 21 to be tested, the section possibly comprises various valves 211, various meters 212, various connecting pieces 214, other parts and the like, and firstly, installing a damage detector 213 on the section to be tested; the two carrier gas bins 23 are buckled on the pipe section to be detected, a lead sealing structure 27 is arranged, and for straight sealing, rubber or soft plastic sealing strips are placed in sealing grooves on the lower semi-cylindrical sleeve; for sealing on a semicircle, firstly placing a wedge-shaped sealing ring of a first sealing ring 271 into a sealing groove, then placing a second sealing ring 272, namely an O-shaped sealing ring beside the wedge-shaped sealing ring, finally extruding a rigid triangle sealing ring of a third sealing ring 273 on the second sealing ring, then buckling an upper semi-cylindrical sleeve and a lower semi-cylindrical sleeve, aligning the upper semi-cylindrical sleeve and the lower semi-cylindrical sleeve, and coating a layer of sealing glue on the intersection point of the flat sealing ring and the semi-cylindrical sealing ring before buckling to ensure the tightness of the intersection point; detecting the fitting degree of four sides of the two buckled semi-cylindrical sleeves, ensuring that sealing strips are at corresponding sealing groove positions, sequentially connecting the front and rear rows of screw holes by bolts, and sequentially screwing the sealing strips to basic buckling and then repeatedly screwing the sealing strips according to the principle of 'front left, rear right, front right, rear left, front middle and rear middle'; the inert gas storage unit 25 is connected to the gas inlet at the left lower part of the buckled carrier gas bin, the connecting port of the cold and hot medium compressor unit 26 is connected to the copper pipe connecting inlet at the right lower part of the pipeline, and the two gas detection devices 22 are respectively connected to the gas outlets at the left and right sides of the upper part of the carrier gas bin, so that the tightness of the connection is ensured; opening an inert gas storage unit 25 to continuously purge the carrier gas bin 23 for 10-20 min, replacing air in the carrier gas bin with inert gas, controlling the pressure of a front-end compressor, and meeting the requirement of providing the required test pressure by the test tube section; the cold and hot media compressor unit 26 is utilized to control the cold and hot media inflow pipeline to enter the cold and hot media pipe 24, and then the cold and hot media inflow pipeline returns to the cold and hot media compressor unit 26 and keeps circulating flow, so that the temperature of carrier gas is constant in the test process and the test temperature requirement is met; when the test is formally started, controlling the gas introduction of the inert gas storage unit 25, keeping the pressure in the carrier gas bin to be 1-1.5 atmospheres, and controlling the temperature and pressure parameters of the test tube section: for the detection of gas leakage, for a section of test tube, controlling the carrier gas bin to run for 3-5 hours when starting the test, and judging the leakage position and the leakage amount if the gas leakage exists; for the performance test of the parts, the carrier gas bin is controlled to run for 3-5 hours when the test is started, the detection data of the gas detection device 22 are recorded, then the detection is carried out at the same position every 3-5 days, the data of the same position are recorded in one period for 30-50 days, and the periodic data are analyzed to be used as a method for the leakage performance test of the parts; aiming at damage test of the pipe or the part, when detecting the leakage process, utilizing the damage detector 213 to detect the pipe section or the part, recording data of the damage detector, recording the same position data in 30-50 days in one period to detect hydrogen damage (crack, corrosion and the like) conditions of the detected pipe section under experimental conditions, if hydrogen damage such as crack corrosion and the like is found, closing a front end valve in time, and detaching and analyzing the pipe section after pressure relief;
(2) For the loading test step, gas flows into the loading module through the connecting bent pipe 31, the stability of the test pipeline under load is guaranteed by the limiting base 32, 4 stop blocks 311 are welded on the connecting bent pipe 31, the baffle 322 is buckled at the welding stop blocks 311, the connecting bent pipe 31 is buckled through the semi-cylindrical sealing cover 324, and the sealing cover is fixed through bolts, so that the connecting bent pipe is fixed up, down, left, right, front and back, and has no degree of freedom; further, the connecting elbow 31 is connected with a to-be-loaded test pipeline 34 through a connecting flange 33, the rear end of the to-be-loaded test pipeline 34 is sealed by using a plugging flange 35, 8 load application ports 361 are uniformly arranged on the flange, and the load application ports are connected through a hydraulic unit 36; the carrier gas bin is arranged on the loading test tube section, the step (1) is repeated, the hydraulic unit 36 is started, the 8 load application ports 361 are respectively (1) (2) (3) (4) (5) (6) (7) (8) along the clockwise direction, the carrier gas bin is started (1) (5) (3) (7) and simultaneously stretches or compresses, a tensile compression load test can be provided, and one or two adjacent carrier gas bins are independently started to realize bending load tests at different angles;
(3) For the pipelines with the diameter of 800mm and the maximum measurable pipe diameter of 800mm, the double-end rubber flange ferrule 20 with the corresponding size difference is sleeved on the part to be tested before the step (1) to supplement the difference with the pipe diameter of 800mm for the pipelines with the diameter of 400-800 mm, and then the steps (1) - (2) are carried out to realize multi-pipe diameter detection;
(4) After the detection of one section of test pipeline is finished, the operation of the loading module is stopped firstly, then the inert gas storage unit 25 is closed for supplying gas, the gas detection device 22 is closed, the gas in the cabin is discharged to normal pressure, the cold and hot medium compressor unit 26 is closed for controlling the cold and hot medium to flow out of the cold and hot medium pipe 24, after the temperature is recovered to normal temperature, the cold and hot medium copper pipe interface, the gas inlet and the upper gas outlet at the lower end are disassembled, the screw of the carrier gas cabin is disassembled in a mode of reverse installation, the carrier gas cabin is disassembled, and the detection of the next test pipeline is carried out according to the requirement.
FIG. 3 is a schematic diagram of a multi-functional hydrogen delivery pipeline test system. The embodiment of the invention provides a multifunctional hydrogen conveying pipeline test system capable of using a carrier gas bin test device, which comprises the following components:
the device comprises an air source, an air metering detection unit, a combustion and explosion characteristic test unit, a pipeline hydrogen adaptability test unit, a hydraulic characteristic monitoring unit, a pipeline connecting system and a master control room, and further comprises a carrier gas bin test device and/or a carrier gas bin test system loaded by the pipeline.
The gas source includes at least one or more of hydrogen, natural gas, and hydrogen-loaded natural gas. Preferably, the hydrogen source comprises fossil fuel hydrogen production, industrial byproduct hydrogen, biomass hydrogen production, renewable energy hydrogen production (wind power, water power or solar energy system) and the like, and the purity of the hydrogen is more than 99%. As a preferable scheme, the natural gas sources comprise coal synthetic natural gas, southwest oil-gas field natural gas, northwest oil-gas field natural gas, middle sub-natural gas, middle Russian natural gas, middle Mains natural gas, offshore natural gas and the like, and the components meet the specification of GB/T37124-2018 'gas quality requirement for entering a natural gas long-distance pipeline'. By controlling the gas source, different combinations of gas components can be generated to facilitate experiments in different gas environments.
The gas metering detection unit comprises a blending device, a flowmeter, a first buffer tank and a separation and purification device. The flowmeter is purchased in the market and meets the technical requirements of a natural gas metering system of GB/T18603-2001; the blending device components comprise, but are not limited to, a flowmeter, a valve, a sealing element, a gas mixing sled, a gas component analyzer, a central control console and the like, and gas source gas enters the first blending device 121 after being metered by the flowmeter, and the device can control the ratio of different hydrogen to perform experiments under different hydrogen-adding ratio gas environments; sampling the mixed gas after blending to perform blending accuracy test, and testing the content of each component of the mixed gas under a chromatographic analyzer; the circulated gas is separated and purified by a separation and purification device 19, and the separation and purification device adopts methods including but not limited to a cryogenic method, a space division method, a pressure swing adsorption method, a membrane separation method and the like, and simultaneously performs separation efficiency and separation purity test on the separated and purified hydrogen so as to test the performance of the separation device; the separated gas flows back to the main pipeline again through the second blending device 122 to ensure the materials in the circulation process; the flowmeter records the input quantity of the hydrogen gas source, the input quantity of the natural gas source, the output quantity of the mixed gas and the input quantity of the circulated gas, meanwhile, the gas at the positions can be subjected to component detection through the gas component analyzer, metering and detection data are transmitted to the gas metering detection unit, and meanwhile, the metering and detection data are transmitted to the hydraulic characteristic monitoring unit, and finally, the control treatment is carried out through the total control room.
The combustion and explosion characteristics test unit the gas flowing out of the second buffer tank 132 enters the unit through the pressure reducing valve 16 and then flows in multiple paths, and tests which can be performed include, but are not limited to, a gas deflagration test, a fire injection test, a pipeline explosion test and the like;
the pipeline hydrogen adaptability test unit comprises a loading module, a detection evaluation module and three sections of pipelines. The gas flows into the unit through the pipeline connecting system and then flows in three paths; the first path of gas flows into the loading module through the third buffer tank 133, the gas flows into the module and then is kept at rest, and if the rest pressure changes, the third buffer tank 133 supplements the gas for the module; the second path of gas flows into a pipeline with one end arranged under air and the other end buried through a transverse pipe, and the soil environment where the real pipeline is positioned is simulated; the third path of gas flows into a detection and evaluation module, the hydrogen adaptability of the pipeline, the parts and the equipment is detected by using a carrier gas bin test method, and various damage detection equipment is connected to the inner pipe wall, including but not limited to a multi-frequency array vortex detector, an intelligent multi-frequency vortex detector and an EMT-200 pipeline detection rotary gun;
for the hydraulic characteristic monitoring units distributed over the whole circulation chain, the units monitor the flow, gas transmission power, pipeline pressure drop and dynamic pressure of each unit in the whole circulation process;
further, the gas transmission power is the thermal load of the pipeline for transmitting gas in unit time, and can represent the gas transmission rate of the pipeline, which is expressed as:Φ= q v Q h, z the method comprises the steps of carrying out a first treatment on the surface of the Wherein phi is the gas transmission power, MJ/h; q v For volume flow, m 3 /h；Q h, z Is the gas with high heat value, MJ/m 3 。
The recorded data of a valve instrument and the like of the whole circulation chain are simultaneously transmitted into a hydraulic characteristic monitoring unit, so that the hydraulic characteristic of the unit in the aspects of pressure drop and dynamic pressure of a system pipeline is analyzed; the data of the gas metering and analyzing units on the whole circulation chain are transmitted into the hydraulic characteristic monitoring unit, and the hydraulic characteristic analysis in the aspect of gas transmission power of the system pipeline can be realized through the gas flow and the gas high heat.
According to the multifunctional hydrogen conveying pipeline test system designed by the invention, the global circulation flow direction comprises:
the gas source gas flows into the gas metering detection unit, flows into the first buffer tank 131 through the plurality of flow meters and the first blending device 121, and flows into the second buffer tank 132 under the action of the compressor 14; the gas in the second buffer tank 132 flows in two paths, one path flows to the combustion explosion characteristic test unit (does not participate in the circulation), and the other path flows to the pipeline hydrogen adaptability test unit (participates in the circulation); the gas in the pipeline hydrogen adaptability test unit is divided into three paths: the first path is led into a loading module (without participating in circulation), the second path is led into a pipeline with one end placed under air and one end buried, and the third path is led into a detection and evaluation module; the gas flows into the fourth buffer tank 134 after passing through the pipeline hydrogen adaptability test unit, flows out of the fourth buffer tank 134 and enters the gas metering detection unit in two paths, the first path participates in the circulation process, the second path enters the separation and purification device 19, the separated gas can be selectively re-mixed into the pipeline to participate in the circulation process after being detected, and the tests of all units can be independently carried out or carried out in multiple processes simultaneously.
In the description of the present specification, reference to the terms "one embodiment," "preferred embodiment," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, as used in embodiments of the present invention, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any particular number of features in the present embodiment. Thus, a feature of an embodiment of the invention that is defined by terms such as "first," "second," etc., may explicitly or implicitly indicate that at least one such feature is included in the embodiment. In the description of the present invention, the word "plurality" means at least two or more, for example, two, three, four, etc., unless explicitly defined otherwise in the embodiments.
In the present invention, unless explicitly stated or limited otherwise in the examples, the terms "mounted," "connected," and "fixed" as used in the examples should be interpreted broadly, e.g., the connection may be a fixed connection, may be a removable connection, or may be integral, and it may be understood that the connection may also be a mechanical connection, an electrical connection, etc.; of course, it may be directly connected, or indirectly connected through an intermediate medium, or may be in communication with each other, or in interaction with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific embodiments.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A carrier gas cartridge testing device for a hydrogen delivery conduit, comprising:
a carrier gas bin (23), an inert gas storage unit (25) and a gas detection device (22);
the carrier gas bin (23) comprises two sleeves, a sealing piece and a fastening piece, wherein the two sleeves can be buckled outside a test tube (21) to be tested, the sealing piece is arranged inside the sleeves and is used for sealing between the two sleeves and the test tube (21) to be tested, the fastening piece is used for fixedly connecting the two sleeves, and the sealing piece comprises a sealing strip and a sealing ring;
the inert gas storage unit (25) is connected to the gas inlet of the carrier gas bin (23) through an inert gas transmission pipeline and is used for continuously purging the carrier gas bin (23) and replacing the air in the carrier gas bin with inert gas before the test is started, and when the test is formally started, the inert gas storage unit (25) is controlled to be introduced and the pressure in the carrier gas bin is kept at 1 to the maximum 1.5 Atmospheric pressure;
the gas detection device (22) is a high-precision mass spectrometer, and the gas detection device (22) is connected to a gas outlet of the carrier gas bin (23) and is used for detecting flux and components of the gas to be detected flowing in and out;
the gas to be detected is inert gas entering the carrier gas bin (23) through an inert gas transmission pipeline or mixed gas of the inert gas and gas leaking into the carrier gas bin (23) in the test tube (21) to be detected;
and a temperature control unit for controlling the temperature in the carrier gas bin (23) to a predetermined temperature range.
2. The carrier gas cartridge testing device of claim 1, wherein,
the temperature control unit comprises a cold and hot medium pipe (24), a cold and hot medium compressor unit (26) and a temperature sensor, wherein the cold and hot medium pipe (24) is arranged in the carrier gas bin (23), the cold and hot medium compressor unit (26) is arranged outside the carrier gas bin (23) and is used for introducing cold and hot medium into the cold and hot medium pipe (24), so that the temperature in the carrier gas bin (23) is controlled in a preset temperature range, and the temperature sensor is used for detecting the temperature in the carrier gas bin (23).
3. The carrier gas cartridge testing device of claim 2, wherein,
the cold and hot medium pipe (24) is a copper pipe, and the copper pipe is welded on the inner wall of the carrier gas bin (23).
4. The carrier gas cartridge testing device of claim 1, wherein,
the inert gas storage unit (25) is an inert gas bottle group, and the inert gas is nitrogen or argon.
5. The carrier gas cartridge testing device of claim 1, wherein,
the two sleeves are provided with straight sections which are contacted with each other and semicircular sections which are contacted with the outside of the test tube (21) to be tested; sealing grooves are formed in the straight section and the semicircular section;
the sealing element comprises a straight sealing strip and a semicircular sealing element; the semicircular sealing piece is provided with three layers of sealing rings, wherein the first sealing ring (271) is wedge-shaped, the second sealing ring (272) is O-shaped, and the third sealing ring (273) is hard triangular sealing.
6. The carrier gas cartridge testing device of claim 1, wherein,
the test tube (21) to be tested further comprises: at least one or more of a valve (211), a meter (212), a damage detector (213) and a connector (214).
7. A carrier gas bin test system for pipeline loading is characterized in that,
comprising a carrier gas cartridge testing device according to any of claims 1-6, and a pipe loading module for applying a load to a test pipe (34) to be loaded, the pipe loading module comprising:
the device comprises a connecting bent pipe (31), a limiting base (32), a connecting flange (33), a blocking flange (35) and a load applying device (36);
the limiting base (32) is arranged on the connecting elbow (31) and used for stabilizing the test pipeline (34) to be loaded when being loaded;
the connecting bent pipe (31) is communicated with one end of the to-be-loaded test pipeline (34) through the connecting flange (33), and conveys to-be-tested gas to the to-be-loaded test pipeline (34);
the plugging flange (35) is positioned at the other end of the to-be-loaded test pipeline (34) and is used for plugging gas; the plugging flange (35) is provided with a plurality of load application ports (361), and the load application device (36) is connected with the load application ports (361) and applies a test load;
the carrier gas bin testing device is used for testing the to-be-loaded testing pipeline (34) applying the testing load.
8. The tubing loaded carrier gas cartridge testing system of claim 7, wherein,
a plurality of stop blocks (311) are arranged on the connecting bent pipe (31), a baffle plate (322) is arranged on the limiting base (32), and the baffle plate (322) is abutted with the stop blocks (311); the limiting base (32) further comprises a semi-cylindrical sealing cover (324), and the semi-cylindrical sealing cover (324) is buckled with the connecting elbow (31) and fixedly connected with the stop block (311).
9. The tubing loaded carrier gas cartridge testing system of claim 7, wherein,
the plugging flange (35) is provided with 8 load application ports (361) in the clockwise direction, and the load application device (36) is connected with the load application ports (361) and provides tensile or compressive load.
10. A multifunctional hydrogen conveying pipeline test system is characterized in that,
comprising the following steps:
a gas source, a gas metering detection unit, a combustion explosion characteristic test unit, a pipeline hydrogen adaptability test unit, a hydraulic characteristic monitoring unit, a pipeline connection system and a master control room, and further comprises a carrier gas bin test device according to any one of claims 1 to 6 and/or a pipeline loading carrier gas bin test system according to any one of claims 7 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11703439B1 (en) | 2022-06-29 | 2023-07-18 | Zhejiang University | Testing hydrogen permeability of non-metallic pipes |
| CN114813452B (en) * | 2022-06-29 | 2022-10-25 | 浙江大学 | Device and method for testing hydrogen permeability of non-metal pipe |
| CN114993845B (en) * | 2022-08-01 | 2022-11-15 | 浙江大学 | Pipeline air pressure testing device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471778A (en) * | 2013-09-24 | 2013-12-25 | 博益(天津)气动技术研究所有限公司 | Sealing clamp for detecting helium or hydrogen leakage at pipeline connecting nut |
| CN106289665A (en) * | 2016-08-23 | 2017-01-04 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of method utilizing tracer to search hydrogen cooled generator group leakage point online |
| CN110173376A (en) * | 2019-06-06 | 2019-08-27 | 中车大连机车车辆有限公司 | A kind of gas engine and its leakage detection method |
| CN113188724A (en) * | 2021-05-12 | 2021-07-30 | 扬州港信光电科技有限公司 | Inert gas sealing device detection device capable of efficiently detecting and positioning |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4601194A (en) * | 1983-01-18 | 1986-07-22 | Damco Testers, Inc. | Method and apparatus for leak testing of pipe |
| CN2846987Y (en) * | 2005-10-25 | 2006-12-13 | 唐山学院 | Special data collector for oil transport pipeline leakage monitoring |
| US20120048000A1 (en) * | 2010-08-31 | 2012-03-01 | Joseph Kirzhner | Method and system to detect and measure piping fuel leak |
| CN104406751A (en) * | 2014-11-28 | 2015-03-11 | 武汉工程大学 | System for testing high-temperature pipeline flange under action of outer bending moment |
| CN107167376A (en) * | 2017-04-18 | 2017-09-15 | 天津大学 | Ocean engineering corrosive pipeline experimental facilities |
| EP3462156B1 (en) * | 2017-09-27 | 2019-11-06 | Smart Leak Solution (SLS) Limited | Leak detection and location system and method |
| CN209198022U (en) * | 2018-12-21 | 2019-08-02 | 上海荆虹实业有限公司 | A kind of gas pipeline convenient for detection of pipeline damage position |
| CN210347310U (en) * | 2019-03-12 | 2020-04-17 | 天津大学 | Combined loading test system for complex loads of deep sea pipeline |
| CN111426564B (en) * | 2020-04-16 | 2022-04-29 | 天津大学 | Pipeline complex load loading test device |
| DE102020111959A1 (en) * | 2020-05-04 | 2021-11-04 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Method and measuring device for examining the hydrogen permeability of an object to be examined |
| CN112628602A (en) * | 2020-12-15 | 2021-04-09 | 湖南理工学院 | Hydrogen-doped natural gas transportation and separation system and control method thereof |
| CN214951999U (en) * | 2021-03-30 | 2021-11-30 | 中国海洋石油集团有限公司 | LNG pipeline flange leakage protection and detection device |
| CN113108244A (en) * | 2021-04-30 | 2021-07-13 | 中海石油气电集团有限责任公司 | Method and system for monitoring and positioning leakage of natural gas pipeline containing hydrogen |
| CN113175627A (en) * | 2021-06-08 | 2021-07-27 | 西南石油大学 | Hydrogen-doped natural gas pipeline leakage monitoring device and method |
| CN214790548U (en) * | 2021-06-08 | 2021-11-19 | 西南石油大学 | Leakage monitoring device for hydrogen-doped natural gas pipeline |
| CN113341060A (en) * | 2021-06-11 | 2021-09-03 | 中国石油大学(华东) | Medium-low pressure hydrogen-containing pipeline experiment system and method |
| CN215985035U (en) * | 2021-08-17 | 2022-03-08 | 安徽伽德罗工业技术有限公司 | Portable high-precision leak detection device for hydrogen supply pipeline |
| CN113959646B (en) * | 2021-09-22 | 2023-12-22 | 成都嘉斯福科技有限公司 | Hydrogen pipeline junction leakage detection equipment |
| CN216383639U (en) * | 2021-12-23 | 2022-04-26 | 山东氢谷新能源技术研究院 | Hydrogen pipeline interface leakage detection device |
| CN114486119A (en) * | 2022-01-24 | 2022-05-13 | 西安石油大学 | Outdoor buried hydrogen-doped pipeline leakage diffusion test device and test method |
-
2022
- 2022-05-17 CN CN202210534171.7A patent/CN114636523B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471778A (en) * | 2013-09-24 | 2013-12-25 | 博益(天津)气动技术研究所有限公司 | Sealing clamp for detecting helium or hydrogen leakage at pipeline connecting nut |
| CN106289665A (en) * | 2016-08-23 | 2017-01-04 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of method utilizing tracer to search hydrogen cooled generator group leakage point online |
| CN110173376A (en) * | 2019-06-06 | 2019-08-27 | 中车大连机车车辆有限公司 | A kind of gas engine and its leakage detection method |
| CN113188724A (en) * | 2021-05-12 | 2021-07-30 | 扬州港信光电科技有限公司 | Inert gas sealing device detection device capable of efficiently detecting and positioning |
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| Publication number | Publication date |
|---|---|
| CN114636523A (en) | 2022-06-17 |
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