CN113155955B - Detection device and detection method for carbon fiber wound hydrogen storage cylinder liner - Google Patents
Detection device and detection method for carbon fiber wound hydrogen storage cylinder liner Download PDFInfo
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- CN113155955B CN113155955B CN202110569115.2A CN202110569115A CN113155955B CN 113155955 B CN113155955 B CN 113155955B CN 202110569115 A CN202110569115 A CN 202110569115A CN 113155955 B CN113155955 B CN 113155955B
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- 238000001514 detection method Methods 0.000 title claims abstract description 105
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 85
- 239000001257 hydrogen Substances 0.000 title claims abstract description 85
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 37
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 40
- 238000009659 non-destructive testing Methods 0.000 claims abstract description 33
- 230000000712 assembly Effects 0.000 claims abstract description 19
- 238000000429 assembly Methods 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 230000008602 contraction Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/904—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents with two or more sensors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a detection device and a detection method for a carbon fiber winding hydrogen storage cylinder liner, wherein the detection device comprises the following components: the detection component is used for carrying out nondestructive detection on the inner wall of the liner; the first driving component is used for driving the detection component to spirally advance in the liner. According to the invention, by arranging the detection device, nondestructive detection is carried out on the liner from the inside of the hydrogen storage cylinder, so that the problem that the carbon fiber winding hydrogen storage cylinder cannot be detected in the prior art is solved, and the safety risk of the carbon fiber winding hydrogen storage cylinder is greatly reduced. The main rod, the second driving assembly, the second connecting ring and the plurality of supporting assemblies are arranged, and when the liner is entered or exited, the plurality of supporting assemblies are folded through the second driving assembly; when the nondestructive testing probe enters the inner container for detection, the plurality of supporting groups are propped up through the second driving assembly, and the nondestructive testing probe is contacted with or close to the inner wall of the inner container. By arranging a plurality of nondestructive testing probes, the testing efficiency is greatly improved.
Description
Technical Field
The invention belongs to the technical field of gas cylinder detection equipment, and particularly relates to a detection device and a detection method for a carbon fiber wound hydrogen storage gas cylinder liner.
Background
The carbon fiber winding gas storage bottle comprises a carbon fiber winding layer, a galvanic corrosion prevention layer and an aluminum liner. The innermost layer of the gas cylinder is a liner, and the part is under the action of the inner pressure of the gas in the gas cylinder and the tension of the composite fiber. The aluminum liner only bears a small portion of the gas pressure in the bottle, with most of the pressure being borne by the external carbon fibers. The inner container of the domestic current hydrogen storage bottle is generally made of seamless aluminum, and the aluminum material has the advantages of light weight, good compatibility with hydrogen, hydrogen embrittlement resistance, leakage resistance, high damage tolerance, wide temperature application range, proper price and the like. The fiber reinforced composite material layer wraps the outer side of the aluminum liner, and consists of carbon fibers and a resin material, so that the fiber reinforced composite material layer is of a typical composite material laminated plate structure: the structure is composed of a plurality of layers of unidirectional fiber composite materials, the winding angles of fibers of each layer are different, and the main function of the layer is to ensure that the gas cylinder has enough strength under the action of higher internal pressure. In the integral structure of the gas cylinder, the carbon fiber winding layer bears most of pressure load, about 75-95%.
Because the outside of the liner is wound by carbon fiber and glass fiber, and the thickness exceeds 15mm, the carbon fiber and the glass fiber are wound and do not conduct magnetism, so that the existing nondestructive testing technology can not detect the carbon fiber wound hydrogen storage cylinder, but the whole pressure bearing of the hydrogen storage cylinder is large, and once an accident occurs, the consequence is not envisaged. Therefore, a new nondestructive testing device is continuously designed to meet the testing requirements.
Disclosure of Invention
The invention aims to provide a device and a method for detecting an inner container of a carbon fiber winding hydrogen storage cylinder, which solve the technical problems that the carbon fiber winding hydrogen storage cylinder cannot be detected and the potential risk is high in the prior art.
In order to achieve the above purpose, the invention adopts the following specific technical scheme:
a detection device for a carbon fiber winding hydrogen storage cylinder liner comprises:
The detection component is used for carrying out nondestructive detection on the inner wall of the liner;
the first driving assembly is used for driving the detection assembly to spirally advance in the liner.
According to the invention, by arranging the detection device, nondestructive detection is carried out on the liner from the inside of the hydrogen storage cylinder, so that the problem that the carbon fiber winding hydrogen storage cylinder cannot be detected in the prior art is solved, and the safety risk of the carbon fiber winding hydrogen storage cylinder is greatly reduced.
Further optimize, first drive assembly includes first lead screw, first motor and support, and the cover is equipped with first go-between on the first lead screw, first lead screw and first go-between threaded connection, and detection assembly sets up in the top of first lead screw, is provided with on the first go-between to be used for holding first go-between and hydrogen storage cylinder fixed connection's the piece that adds, and first motor is fixed to be set up on the support, and first motor drive first lead screw rotates to drive whole detection assembly screw type in the inner bag and advance to carry out nondestructive test to the inner bag.
Through setting up first drive assembly, first lead screw of first motor drive rotates, drives whole detection component spiral and advances in the inner bag, and nondestructive test probe carries out nondestructive test to the inner bag to with the detection data transmission to the control terminal who arranges in outside the hydrogen storage bottle. The first motor is a servo motor.
Further optimized, the clamping piece is at least two buckles arranged on the peripheral surface of the first connecting ring; the front half section of the first connecting ring is embedded in the bottle mouth, the outer peripheral surface of the first connecting ring is tightly contacted with the inner wall of the bottle mouth, and then the first connecting ring is locked with the bottle mouth of the hydrogen storage bottle through the hasp, so that the first connecting ring and the hydrogen storage bottle are ensured to be relatively fixed in the rotation process of the first screw rod.
Or add and hold the piece and be the staple bolt, first go-between includes the inner loop and along a plurality of location cardboard of the fixed setting of inner and outer wall circumference, be provided with the clearance between locating plate and the inner loop, the locating plate overcoat is equipped with the staple bolt, and the first half of inner loop inlays and establishes in the bottleneck of hydrogen storage gas cylinder, and the locating plate is located outside the bottleneck, then locks the staple bolt and makes the location cardboard tightly wrap up the hydrogen storage gas cylinder, ensures at first lead screw rotation in-process, and first go-between remains relatively fixed with the hydrogen storage gas cylinder.
Further preferably, the detection assembly comprises a main rod, a second connecting ring, a second driving assembly and a plurality of support assemblies; the second connecting ring is sleeved on the main rod;
The support assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with the top end of the main rod, and the other end of the first connecting rod is hinged with the middle part of the second connecting rod; the tail end of the main rod is connected with the first driving component; one end of the second connecting rod is hinged with the second connecting ring, and the other end of the second connecting rod is provided with at least one nondestructive testing probe; the plurality of support components are uniformly arranged along the circumferential direction of the main rod; the nondestructive testing probe is an eddy-current nondestructive testing probe.
The second driving assembly can drive the second connecting ring to move along the length direction of the main rod, and when the second connecting ring is close to the top end of the main rod, the plurality of supporting assemblies are propped open to form an umbrella rib shape as a whole; when the second connecting ring is far away from the top end of the main rod, the plurality of support components are folded.
Because the bottle mouth of the hydrogen storage bottle is smaller in size, the second driving assembly is not easy to put into and take out from the liner, and therefore, the main rod, the second driving assembly, the second connecting ring and the plurality of supporting assemblies are arranged, and when the hydrogen storage bottle enters into or exits from the liner, the plurality of supporting assemblies are folded through the second driving assembly; when the nondestructive testing probe enters the inner container for detection, the plurality of supporting groups are unfolded through the second driving assembly, the whole umbrella rib-shaped body is formed, and the nondestructive testing probe is contacted with or close to the inner wall of the inner container. By arranging a plurality of nondestructive testing probes, the testing efficiency is greatly improved.
In addition, the length of the second connecting rod is larger than that of the first connecting rod, the nondestructive testing probe is arranged at the end part of the second connecting rod, after detection and reception, the second driving component drives the second connecting ring to move towards the tail end of the main rod to drive the plurality of supporting components to be gradually folded, at the moment, the nondestructive testing probe is folded at the top end of the main rod, the size of the end is larger, the second connecting ring moves to be close to the top end of the second screw rod, the size of the end is smaller, the whole testing component is taken out from the liner, and the testing probe cannot be clamped at the bottle mouth.
Further preferably, an elastic piece is arranged at the top end of the second connecting rod, a wear-resistant rigid ball is arranged at the other end of the elastic piece, and the nondestructive testing probe is fixedly arranged at the joint of the elastic piece and the wear-resistant rigid ball.
Because the inner wall of the inner container is not necessarily smooth, the end face of the inner container is not necessarily in a standard round shape, and the elastic piece is arranged to play a role in buffering, so that each rigid ball is ensured to be in contact with the inner wall of the inner container, the same gap from each nondestructive testing probe to the inner wall of the inner container is ensured, and the testing precision is improved. In addition, through setting up wear-resisting rigid ball, make it be the point-to-surface contact with the inner bag, whole detection component can go on smoothly in spiral advancing process during the detection, reduces situations such as card resistance, improves detection efficiency.
Further preferably, the main rod is a polished rod, and the second connecting ring is movably sleeved on the polished rod; the second driving component is a piston cylinder which is arranged in parallel with the polish rod; the tail end of the polish rod and the cylinder body of the piston cylinder are fixedly arranged at the top end of the first screw rod; a piston rod of the piston cylinder is connected with the second connecting ring; the second connecting ring is pushed by the extension and contraction of the piston rod to move along the polish rod;
Further preferably, the main rod is a circular tube, a sliding groove is formed in the circular tube along the length direction of the main rod, the second driving component is a piston cylinder, the piston cylinder is arranged in the circular tube, and the tail end of the circular tube and the cylinder body of the piston cylinder are fixedly arranged at the top end of the first screw rod; and a limiting block is fixedly connected to the second connecting ring, one end of the limiting block penetrates through the sliding groove to be connected with a piston rod of the piston cylinder, and the expansion and contraction of the piston rod drives the second connecting ring to move along the length direction of the main rod.
Further preferably, the main rod is a second screw rod, the second connecting ring is in threaded connection with the second screw rod, the top end of the second screw rod is rotationally connected with a third connecting ring through a bearing, one end of the first connecting rod is hinged with the third connecting ring, and the other end of the first connecting rod is hinged with the middle part of the second connecting rod; a guide rod is arranged in parallel with the second screw rod, one end of the guide rod is fixedly connected with the third connecting ring, and the other end of the guide rod is fixedly connected with the top end of the first screw rod; the second connecting ring is provided with a through hole, and is movably sleeved on the guide rod through the through hole;
The second driving assembly is a second motor, the second motor is fixedly arranged at the top end of the first screw rod, a rotating shaft of the second motor is fixedly connected with the second screw rod, the second motor drives the second screw rod to rotate, and the second connecting ring is driven to move along the length direction of the second screw rod and the guide rod.
Further preferably, the main rod is a circular tube, a sliding groove is formed in the circular tube along the length direction of the main rod, the second driving assembly is a second motor, the second motor is arranged in the circular tube, and the tail end of the circular tube and the second motor are fixedly arranged at the top end of the first screw rod; the second lead screw is arranged in the round tube, the second lead screw is arranged in parallel with the round tube, the top end of the second lead screw is rotationally connected with the top end of the round tube through a bearing, the other end of the second lead screw is fixedly connected with an output shaft of the second motor, a fourth connecting ring is arranged on a threaded connecting sleeve on the second lead screw, a limiting block is fixedly connected onto the second connecting ring, one end of the limiting block penetrates through a sliding groove and is fixedly connected with the fourth connecting ring, the second motor drives the second lead screw to rotate, the fourth connecting ring is driven to move along the length direction of the second lead screw, and the second connecting ring is pushed to move together.
The detection method based on the detection device of the carbon fiber winding hydrogen storage cylinder liner comprises the following steps:
The method comprises the steps that firstly, a clamping piece is fixedly connected with a hydrogen storage cylinder, the whole detection device is connected with the hydrogen storage cylinder, a detection assembly is placed in an inner container, the front half section of a first lead screw of a first driving assembly is positioned in the inner container, and the rear half section of the first lead screw, a first motor and a bracket are positioned outside the hydrogen storage cylinder;
Step two, a second driving component is started through a first switch arranged outside the hydrogen storage cylinder, the second driving component drives a second connecting ring to move towards the top end of the main rod, and a plurality of supporting components are driven to be gradually spread until a rigid ball at the top end of the second connecting rod contacts with the inner wall of the liner, and the whole umbrella is umbrella-bone-shaped; then the second driving component is closed through the first switch, and the relative position of the second connecting ring and the main rod is kept fixed;
Step three, a first motor of a first driving assembly is started through a second switch arranged outside the hydrogen storage cylinder, the first motor drives a first lead screw to rotate, the whole detection assembly is driven to spirally advance in the liner, a nondestructive detection probe carries out nondestructive detection on the liner, and detection data are transmitted to a control terminal arranged outside the hydrogen storage cylinder;
after the inner wall of the liner is completely detected, the second driving assembly is started again through the first switch, and the second driving assembly drives the second connecting ring to move towards the tail end of the main rod so as to drive the plurality of supporting assemblies to be gradually folded; then the first motor is started to reversely rotate through the second switch, and the whole detection assembly is driven to move towards the bottle mouth of the liner;
And fifthly, turning off the power supply, loosening the clamping piece, enabling the whole detection device to be connected with the hydrogen storage cylinder and fixedly connected with the hydrogen storage cylinder to be separated, taking out from the liner, and then putting into the storage box.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, by arranging the detection device, nondestructive detection is carried out on the liner from the inside of the hydrogen storage cylinder, so that the problem that the carbon fiber winding hydrogen storage cylinder cannot be detected in the prior art is solved, and the safety risk of the carbon fiber winding hydrogen storage cylinder is greatly reduced.
2. The bottle mouth of the hydrogen storage bottle is small in size, and the second driving assembly is not easy to put into and take out from the liner, so that the main rod, the second driving assembly, the second connecting ring and the plurality of supporting assemblies are arranged, and when the hydrogen storage bottle enters or exits from the liner, the plurality of supporting assemblies are folded through the second driving assembly; when the nondestructive testing probe enters the inner container for detection, the plurality of supporting groups are unfolded through the second driving assembly, the whole umbrella rib-shaped body is formed, and the nondestructive testing probe is contacted with or close to the inner wall of the inner container. By arranging a plurality of nondestructive testing probes, the testing efficiency is greatly improved.
3. According to the invention, the length of the second connecting rod is larger than that of the first connecting rod, the nondestructive testing probe is arranged at the end part of the second connecting rod, after detection and reception, the second driving component drives the second connecting ring to move towards the tail end of the main rod to drive the plurality of supporting components to be gradually folded, at the moment, the nondestructive testing probe is folded at the top end of the main rod, the volume of the end is larger, the second connecting ring moves to be close to the top end of the second screw rod, the volume of the end is smaller, and the whole testing component is taken out from the liner more conveniently, so that the testing probe cannot be clamped at the bottle mouth.
4. Through setting up the elastic component, play the cushioning effect, guarantee every equal rigid ball and inner bag inner wall contact, ensure that every nondestructive test probe is the same to the clearance of inner bag inner wall, improve detection precision. In addition, through setting up wear-resisting rigid ball, make it be the point-to-surface contact with the inner bag, whole detection component can go on smoothly in spiral advancing process during the detection, reduces situations such as card resistance, improves detection efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a detecting device for a liner of a carbon fiber wound hydrogen storage cylinder in the first embodiment.
Fig. 2 is a top view of the sensing assembly of fig. 1 after being expanded.
Fig. 3 is an enlarged view of the detection assembly of fig. 1.
Fig. 4 is a schematic structural diagram of the detection component in the first embodiment when the detection component is folded.
Fig. 5 is a schematic structural diagram of a detecting device for a liner of a carbon fiber wrapped hydrogen storage cylinder in the second embodiment.
Fig. 6 is an enlarged view of the detection assembly of fig. 5.
Fig. 7 is a schematic structural diagram of a detecting device for a liner of a carbon fiber wrapped hydrogen storage cylinder in the third embodiment.
Fig. 8 is an enlarged view of the detection assembly of fig. 7.
Fig. 9 is a schematic structural diagram of a detecting device for a liner of a carbon fiber wrapped hydrogen storage cylinder in the fourth embodiment.
Fig. 10 is an enlarged view of the detection assembly of fig. 9.
FIG. 11 is a flow chart of a detection method of the detection device based on the carbon fiber wound hydrogen storage cylinder liner.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Embodiment one:
As shown in fig. 1 to 4, a device for detecting a liner of a carbon fiber wound hydrogen storage cylinder, comprising:
the detection assembly 1 is used for carrying out nondestructive detection on the inner wall of the liner;
and the first driving assembly 2 is used for driving the detection assembly to spirally advance in the liner.
According to the invention, by arranging the detection device, nondestructive detection is carried out on the liner from the inside of the hydrogen storage cylinder, so that the problem that the carbon fiber winding hydrogen storage cylinder cannot be detected in the prior art is solved, and the safety risk of the carbon fiber winding hydrogen storage cylinder is greatly reduced.
In this embodiment, the first driving assembly includes first lead screw 21, first motor 22 and support, the cover is equipped with first go-between 23 on the first lead screw 21, first lead screw 21 and first go-between 23 threaded connection, detection assembly 1 sets up in the top of first lead screw 21, be provided with on the first go-between and be used for with first go-between and hydrogen storage cylinder fixed connection's the piece 24 that adds, first motor is fixed to be set up on the support, first motor drive first lead screw rotates, thereby drive whole detection assembly screw type advance in the inner bag and carry out nondestructive test to the inner bag.
Through setting up first drive assembly, first lead screw of first motor drive rotates, drives whole detection component spiral and advances in the inner bag, and nondestructive test probe carries out nondestructive test to the inner bag to with the detection data transmission to the control terminal who arranges in outside the hydrogen storage bottle. The first motor 22 is a servo motor.
In this embodiment, the clamping member 24 is four buckles disposed on the outer peripheral surface of the first connecting ring; the first connecting ring is embedded in the bottle mouth at the front half section, the outer peripheral surface of the first connecting ring 23 is tightly contacted with the inner wall of the bottle mouth, and then the bottle mouth is locked with the hydrogen storage bottle through the hasp, so that the first connecting ring and the hydrogen storage bottle are ensured to be kept relatively fixed in the rotation process of the first screw rod. The hasp is the prior art, and is not repeated. In other embodiments, the number of snaps may be two, three, five, etc.
In other embodiments, the clamping piece is a hoop, the first connecting ring comprises an inner ring and a plurality of locating clamping plates fixedly arranged along the circumferential direction of the inner wall and the outer wall, a gap is formed between the locating plate and the inner ring, the hoop is sleeved outside the locating plate, the front half section of the inner ring is embedded in the bottle mouth of the hydrogen storage bottle, the locating plate is positioned outside the bottle mouth, and then the hoop is locked to enable the locating clamping plates to tightly wrap the hydrogen storage bottle, so that the first connecting ring and the hydrogen storage bottle are kept relatively fixed in the rotation process of the first screw rod.
In this embodiment, the detection assembly 1 includes a main rod 12, a second connection ring 13, a second driving assembly, and eight support assemblies; the second connecting ring 13 is sleeved on the main rod 12.
The support assembly comprises a first connecting rod 18 and a second connecting rod 17, one end of the first connecting rod 18 is hinged with the top end of the main rod 12, and the other end of the first connecting rod is hinged with the middle part of the second connecting rod 17; the end of the main rod 12 is connected with a first driving component; one end of the second connecting rod 17 is hinged with the second connecting ring, and the other end is provided with three nondestructive testing probes; eight support components are uniformly arranged along the circumferential direction of the main rod; the nondestructive testing probe is an eddy-current nondestructive testing probe.
The second driving assembly can drive the second connecting ring to move along the length direction of the main rod, and when the second connecting ring is close to the top end of the main rod, the plurality of supporting assemblies are propped open to form an umbrella rib shape as a whole; when the second connecting ring is far away from the top end of the main rod, the plurality of support components are folded.
Because the bottle mouth of the hydrogen storage bottle is smaller in size, the second driving assembly is not easy to put into and take out from the liner, and therefore, the main rod, the second driving assembly, the second connecting ring and the plurality of supporting assemblies are arranged, and when the hydrogen storage bottle enters into or exits from the liner, the plurality of supporting assemblies are folded through the second driving assembly; when the nondestructive testing probe enters the inner container for detection, the plurality of supporting groups are unfolded through the second driving assembly, the whole umbrella rib-shaped body is formed, and the nondestructive testing probe is contacted with or close to the inner wall of the inner container. By arranging a plurality of nondestructive testing probes, the testing efficiency is greatly improved.
In addition, the length of the second connecting rod is larger than that of the first connecting rod, the nondestructive testing probe is arranged at the end part of the second connecting rod, after detection and reception, the second driving component drives the second connecting ring to move towards the tail end of the main rod to drive the plurality of supporting components to be gradually folded, at the moment, the nondestructive testing probe is folded at the top end of the main rod, the size of the end is larger, the second connecting ring moves to be close to the top end of the second screw rod, the size of the end is smaller, the whole testing component is taken out from the liner, and the testing probe cannot be clamped at the bottle mouth.
In other embodiments, the number of support assemblies may be two, three, four, five, six, etc., as needed; likewise, the number of nondestructive testing probes arranged at the end of each second connecting ring can be one, two, four and the like, and is determined according to specific needs.
In this embodiment, the top end of the second connecting rod is provided with an elastic member 102, the other end of the elastic member is provided with a wear-resistant rigid ball 101, and the nondestructive testing probe 19 is fixedly arranged at the joint of the elastic member and the wear-resistant rigid ball.
Because the inner wall of the inner container is not necessarily smooth, the end face of the inner container is not necessarily in a standard round shape, and the elastic piece is arranged to play a role in buffering, so that each rigid ball is ensured to be in contact with the inner wall of the inner container, the same gap from each nondestructive testing probe to the inner wall of the inner container is ensured, and the testing precision is improved. In addition, through setting up wear-resisting rigid ball, make it be the point-to-surface contact with the inner bag, whole detection component can go on smoothly in spiral advancing process during the detection, reduces situations such as card resistance, improves detection efficiency.
In this embodiment, the elastic member 102 is a spring. In other embodiments, the elastic member 102 may be a rubber block.
In this embodiment, the main rod 12 is a polished rod, and the second connecting ring 13 is movably sleeved on the polished rod; the second driving component is a piston cylinder which is arranged in parallel with the polish rod; the tail end of the polish rod and the cylinder body 104 of the piston cylinder are fixedly arranged at the top end of the first screw rod; the piston rod 103 of the piston cylinder is connected with the second connecting ring 13; the second connecting ring is pushed to move along the polish rod by the extension and contraction of the piston rod 103, so that the aim of expanding or collapsing the support frame is fulfilled.
In this embodiment, the piston cylinder is a hydraulic piston cylinder, and in other embodiments may be a cylinder.
Embodiment two:
In this embodiment, as shown in fig. 5 and 6, the main rod 12 is a circular tube, a sliding groove is formed in the circular tube along the length direction of the circular tube, the second driving assembly is a piston cylinder, the piston cylinder is arranged in the circular tube, and the tail end of the circular tube and the cylinder body 104 of the piston cylinder are fixedly arranged at the top end of the first screw 21; the second connecting ring 13 is fixedly connected with a limiting block 16, one end of the limiting block 16 penetrates through the sliding groove to be connected with a piston rod 103 of the piston cylinder, and the expansion and contraction of the piston rod 103 drives the second connecting ring 13 to move along the length direction of the main rod 12, so that the purpose of expanding or collapsing the support frame is achieved.
The other portions are the same as in the first embodiment.
Embodiment III:
In this embodiment, as shown in fig. 7 and 8, the main rod is a second screw rod 12, the second connecting ring 13 is in threaded connection with the second screw rod, the top end of the second screw rod is rotatably connected with a third connecting ring 107 through a bearing, one end of the first connecting rod 18 is hinged with the third connecting ring 107, and the other end is hinged with the middle part of the second connecting rod 17; a guide rod 106 is arranged in parallel with the second screw rod, one end of the guide rod 106 is fixedly connected with a third connecting ring 107, and the other end is fixedly connected with the top end of the first screw rod 21; the second connecting ring 13 is provided with a through hole, and the second connecting ring 13 is movably sleeved on the guide rod 106 through the through hole.
The second driving assembly is a second motor 11, the second motor 11 is fixedly arranged at the top end of the first screw rod 21, a rotating shaft of the second motor is fixedly connected with the second screw rod, the second motor drives the second screw rod to rotate, and the second connecting ring is driven to move along the length direction of the second screw rod and the guide rod 106, so that the purpose of expanding or collapsing the support frame is achieved. The second motor is a servo motor.
The other portions are the same as in the first embodiment.
Embodiment four:
In this embodiment, as shown in fig. 9 and 10, the main rod 12 is a circular tube, a sliding groove is formed in the circular tube along the length direction of the circular tube, the second driving assembly is a second motor 11, the second motor 11 is arranged in the circular tube 12, and the tail end of the circular tube and the second motor 11 are both fixedly arranged at the top end of the first screw 21; the second lead screw 14 is arranged in the circular tube, the second lead screw 14 is arranged in parallel with the circular tube 12, the top end of the second lead screw 14 is rotationally connected with the top end of the circular tube 12 through a bearing, the other end of the second lead screw 14 is fixedly connected with an output shaft of a second motor, a fourth connecting ring 15 is arranged on a threaded connecting sleeve of the second lead screw 14, a limiting block 16 is fixedly connected to the second connecting ring 13, one end of the limiting block 16 penetrates through a sliding groove and is fixedly connected with the fourth connecting ring 15, the second motor 11 drives the second lead screw 14 to rotate, and the fourth connecting ring 15 is driven to move along the length direction of the second lead screw 14, so that the second connecting ring 13 is pushed to move together, and the purpose of expanding or folding a supporting frame is achieved. The second motor is a servo motor.
The other portions are the same as in the first embodiment.
Fifth embodiment:
As shown in fig. 11, the detection method based on the detection device of the carbon fiber wound hydrogen storage cylinder liner comprises the following steps:
S1, fixedly connecting a clamping piece with a hydrogen storage cylinder, connecting the whole detection device with the hydrogen storage cylinder, placing a detection assembly into an inner container, wherein the front half section of a first lead screw of a first driving assembly is positioned in the inner container, and the rear half section of the first lead screw, a first motor and a bracket are positioned outside the hydrogen storage cylinder;
S2, a second driving assembly is started through a first switch arranged outside the hydrogen storage cylinder, the second driving assembly drives a second connecting ring to move towards the top end of the main rod, and the supporting assemblies are driven to be gradually spread until a rigid ball at the top end of the second connecting rod is contacted with the inner wall of the liner, and the whole umbrella is umbrella-rib-shaped; then the second driving component is closed through the first switch, and the relative position of the second connecting ring and the main rod is kept fixed;
S3, a first motor of a first driving assembly is started through a second switch arranged outside the hydrogen storage cylinder, the first motor drives a first lead screw to rotate, the whole detection assembly is driven to spirally advance in the liner, a nondestructive detection probe carries out nondestructive detection on the liner, and detection data are transmitted to a control terminal arranged outside the hydrogen storage cylinder;
s4, after the inner wall of the liner is completely detected, the second driving assembly is started again through the first switch, and the second driving assembly drives the second connecting ring to move towards the tail end of the main rod so as to drive the plurality of supporting assemblies to be gradually folded; then the first motor is started to reversely rotate through the second switch, and the whole detection assembly is driven to move towards the bottle mouth of the liner;
S5, turning off the power supply, loosening the clamping piece, enabling the whole detection device to be connected with the hydrogen storage cylinder and fixedly connected with the hydrogen storage cylinder to be separated, taking out from the liner, and then putting into the storage box.
It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the invention; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a detection device of carbon fiber winding hydrogen storage gas cylinder inner bag which characterized in that includes:
The detection component is used for carrying out nondestructive detection on the inner wall of the liner;
The first driving assembly is used for driving the detection assembly to spirally advance in the liner; the first driving assembly comprises a first lead screw, a first motor and a bracket, a first connecting ring is sleeved on the first lead screw, the first lead screw is in threaded connection with the first connecting ring, the detection assembly is arranged at the top of the first lead screw, a holding piece for fixedly connecting the first connecting ring with the hydrogen storage cylinder is arranged on the first connecting ring, the first motor is fixedly arranged on the bracket, the first motor drives the first lead screw to rotate, and therefore the whole detection assembly is driven to spirally advance in the liner to perform nondestructive detection on the liner;
the clamping piece is at least two buckles arranged on the peripheral surface of the first connecting ring;
or the clamping piece is a hoop, the first connecting ring comprises an inner ring and a plurality of positioning clamping plates fixedly arranged along the circumferential direction of the inner wall and the outer wall, a gap is arranged between the positioning plates and the inner ring, the hoop is sleeved outside the positioning plates, the inner ring is embedded at the bottleneck of the hydrogen storage cylinder, and the positioning plates are positioned outside the bottleneck and lock the hydrogen storage cylinder and the clamping piece through the hoop;
the detection assembly comprises a main rod, a second connecting ring, a second driving assembly and a plurality of support assemblies;
The second connecting ring is sleeved on the main rod;
the support assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with the top end of the main rod, and the other end of the first connecting rod is hinged with the middle part of the second connecting rod; the tail end of the main rod is connected with the first driving component; one end of the second connecting rod is hinged with the second connecting ring, and the other end of the second connecting rod is provided with at least one nondestructive testing probe; the plurality of support components are uniformly arranged along the circumferential direction of the main rod;
The second driving assembly can drive the second connecting ring to move along the length direction of the main rod, and when the second connecting ring is close to the top end of the main rod, the plurality of supporting assemblies are propped open to form an umbrella rib shape as a whole; when the second connecting ring is far away from the top end of the main rod, the plurality of support components are folded;
the top of the second connecting rod is provided with an elastic piece, the other end of the elastic piece is provided with a wear-resistant rigid ball, and the nondestructive testing probe is fixedly arranged at the joint of the elastic piece and the wear-resistant rigid ball.
2. The detection device for the inner container of the carbon fiber wound hydrogen storage cylinder according to claim 1, wherein the main rod is a polished rod, and the second connecting ring is movably sleeved on the polished rod; the second driving component is a piston cylinder which is arranged in parallel with the polish rod; the tail end of the polish rod and the cylinder body of the piston cylinder are fixedly arranged at the top end of the first screw rod; a piston rod of the piston cylinder is connected with the second connecting ring; the second connecting ring is pushed to move along the polish rod by the extension and contraction of the piston rod.
3. The detection device for the inner container of the carbon fiber wound hydrogen storage cylinder according to claim 1, wherein the main rod is a circular tube, a sliding groove is formed in the circular tube along the length direction of the circular tube, the second driving component is a piston cylinder, the piston cylinder is arranged in the circular tube, and the tail end of the circular tube and the cylinder body of the piston cylinder are fixedly arranged at the top end of the first screw rod; and a limiting block is fixedly connected to the second connecting ring, one end of the limiting block penetrates through the sliding groove to be connected with a piston rod of the piston cylinder, and the expansion and contraction of the piston rod drives the second connecting ring to move along the length direction of the main rod.
4. The detection device for the inner container of the carbon fiber wound hydrogen storage cylinder according to claim 1, wherein the main rod is a second screw rod, the second connecting ring is in threaded connection with the second screw rod, the top end of the second screw rod is rotationally connected with a third connecting ring through a bearing, one end of the first connecting rod is hinged with the third connecting ring, and the other end of the first connecting rod is hinged with the middle part of the second connecting rod; a guide rod is arranged in parallel with the second screw rod, one end of the guide rod is fixedly connected with the third connecting ring, and the other end of the guide rod is fixedly connected with the top end of the first screw rod; the second connecting ring is provided with a through hole, and is movably sleeved on the guide rod through the through hole;
The second driving assembly is a second motor, the second motor is fixedly arranged at the top end of the first screw rod, a rotating shaft of the second motor is fixedly connected with the second screw rod, the second motor drives the second screw rod to rotate, and the second connecting ring is driven to move along the length direction of the second screw rod and the guide rod.
5. The detection device for the inner container of the carbon fiber wound hydrogen storage cylinder according to claim 1, wherein the main rod is a circular tube, a chute is formed in the circular tube along the length direction of the circular tube, the second driving component is a second motor, the second motor is arranged in the circular tube, and the tail end of the circular tube and the second motor are fixedly arranged at the top end of the first screw rod; the second lead screw is arranged in the round tube, the second lead screw is arranged in parallel with the round tube, the top end of the second lead screw is rotationally connected with the top end of the round tube through a bearing, the other end of the second lead screw is fixedly connected with an output shaft of the second motor, a fourth connecting ring is arranged on a threaded connecting sleeve on the second lead screw, a limiting block is fixedly connected onto the second connecting ring, one end of the limiting block penetrates through a sliding groove and is fixedly connected with the fourth connecting ring, the second motor drives the second lead screw to rotate, the fourth connecting ring is driven to move along the length direction of the second lead screw, and the second connecting ring is pushed to move together.
6. The detection method based on the detection device of the carbon fiber wound hydrogen storage cylinder liner according to any one of claims 1 to 5, characterized by comprising the following steps:
The method comprises the steps that firstly, a clamping piece is fixedly connected with a hydrogen storage cylinder, the whole detection device is connected with the hydrogen storage cylinder, a detection assembly is placed in an inner container, the front half section of a first lead screw of a first driving assembly is positioned in the inner container, and the rear half section of the first lead screw, a first motor and a bracket are positioned outside the hydrogen storage cylinder;
Step two, a second driving component is started through a first switch arranged outside the hydrogen storage cylinder, the second driving component drives a second connecting ring to move towards the top end of the main rod, and a plurality of supporting components are driven to be gradually spread until a rigid ball at the top end of the second connecting rod contacts with the inner wall of the liner, and the whole umbrella is umbrella-bone-shaped; then the second driving component is closed through the first switch, and the relative position of the second connecting ring and the main rod is kept fixed;
Step three, a first motor of a first driving assembly is started through a second switch arranged outside the hydrogen storage cylinder, the first motor drives a first lead screw to rotate, the whole detection assembly is driven to spirally advance in the liner, a nondestructive detection probe carries out nondestructive detection on the liner, and detection data are transmitted to a control terminal arranged outside the hydrogen storage cylinder;
after the inner wall of the liner is completely detected, the second driving assembly is started again through the first switch, and the second driving assembly drives the second connecting ring to move towards the tail end of the main rod so as to drive the plurality of supporting assemblies to be gradually folded; then the first motor is started to reversely rotate through the second switch, and the whole detection assembly is driven to move towards the bottle mouth of the liner;
And fifthly, turning off the power supply, loosening the clamping piece, enabling the whole detection device to be connected with the hydrogen storage cylinder and fixedly connected with the hydrogen storage cylinder to be separated, taking out from the liner, and then putting into the storage box.
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| CN113916109B (en) * | 2021-09-02 | 2024-07-02 | 陈法良 | LNG gas cylinder detector |
| CN114002329B (en) * | 2021-12-04 | 2024-09-17 | 江苏省特种设备安全监督检验研究院 | Carbon fiber winding gas storage bottle detection device and detection method |
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