CN118583655B - A pressure testing device and method based on seamless steel pipe - Google Patents
A pressure testing device and method based on seamless steel pipe Download PDFInfo
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- CN118583655B CN118583655B CN202410679685.0A CN202410679685A CN118583655B CN 118583655 B CN118583655 B CN 118583655B CN 202410679685 A CN202410679685 A CN 202410679685A CN 118583655 B CN118583655 B CN 118583655B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 146
- 239000010959 steel Substances 0.000 title claims abstract description 146
- 238000012360 testing method Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 71
- 230000002457 bidirectional effect Effects 0.000 claims abstract 2
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 238000011017 operating method Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 43
- 230000003116 impacting effect Effects 0.000 description 5
- 241000353135 Psenopsis anomala Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- G01N3/02—Details
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of seamless steel tube pressure resistance detection, and particularly relates to pressure resistance detection equipment and method based on a seamless steel tube, wherein the pressure resistance detection equipment comprises a seamless steel tube pressure resistance detection machine, wherein the seamless steel tube pressure resistance detection machine comprises a bottom plate, four support posts, a top plate, a hydraulic machine, an upper press plate, a lower press plate and four support posts; the device is characterized in that a pressing block is fixedly arranged at the bottom of the upper pressing plate, a placement block is fixedly arranged above the lower pressing plate, a camera is fixedly arranged on one side of the bottom plate, a thickness identification module and a deformation identification module are arranged in the camera, a power control module is arranged in the hydraulic machine, the thickness identification module is electrically connected with the power control module, the device solves the problems that when the seamless steel pipe is subjected to pressure-resistant detection currently, the seamless steel pipe cannot be subjected to bidirectional pressure application, so that the detection efficiency is improved, and after the detection is finished, the seamless steel pipe is easy to clamp and cannot be taken out from equipment.
Description
Technical Field
The invention belongs to the technical field of seamless steel tube pressure resistance detection, and particularly relates to pressure resistance detection equipment and method based on a seamless steel tube.
Background
The seamless steel pipe is formed by perforating a whole round steel, the surface of the seamless steel pipe is not provided with a weld joint, the seamless steel pipe is called as a seamless steel pipe, and the pressure resistance of the seamless steel pipe is an important technical index of the seamless steel pipe in the use process, so that the seamless steel pipe is subjected to pressure resistance detection before delivery, the seamless steel pipe is subjected to effective, rapid and convenient pressure detection, the problem of product detection of a seamless steel pipe production enterprise is solved, the seamless steel pipe is divided into two types of round and special-shaped steel pipes according to the section shape, the special-shaped pipes are provided with various complex shapes such as square, elliptic, triangular, hexagonal, melon seed, star-shaped, finned pipes and the like, and the special-shaped pipes are deformed during pressure resistance detection and are easy to clamp in equipment, so that the detected seamless steel pipe cannot be taken out quickly.
Disclosure of Invention
The invention aims to provide pressure-resistant detection equipment and method based on a seamless steel tube, so as to solve the problems in the background technology.
The technical scheme includes that the seamless steel tube-based pressure-resistant detection device comprises a bottom plate, four support posts, a top plate, a hydraulic press, an upper pressing plate, a lower pressing plate and four support posts, wherein a pressing block is fixedly arranged at the bottom of the upper pressing plate, a placement block is fixedly arranged above the lower pressing plate, a camera is fixedly arranged on one side of the bottom plate, the bottom plate is fixedly connected with the top plate through the four support posts, the hydraulic press is fixedly arranged above the top plate, the upper pressing plate is fixedly connected with the output end of the hydraulic press, counter bores are formed in the periphery of the lower pressing plate, limit blocks are fixedly arranged at the upper ends of the four support posts and are slidably connected in the counter bores, and the lower ends of the support posts are mutually fixed with the upper surface of the bottom plate.
The invention further provides a device for detecting the pressure resistance of the seamless steel tube, which comprises a back extrusion mechanism, wherein the back extrusion mechanism comprises two hydraulic cavities and a top cavity, a thickness identification module and a deformation identification module are arranged in a camera, a power control module is arranged in the hydraulic machine, the thickness identification module is electrically connected with the power control module, the thickness identification module is used for identifying the tube wall thickness of the seamless steel tube, the power control module is used for controlling the changing speed of the power of the hydraulic machine according to the tube wall thickness of the seamless steel tube, the deformation identification module is used for identifying whether the seamless steel tube deforms or not so as to detect the pressure resistance of the seamless steel tube, the two hydraulic cavities are respectively arranged on the left side and the right side of the bottom of the lower pressure plate and are fixed with the upper surface of a bottom plate, the inner walls of the two hydraulic cavities are respectively connected with a hydraulic plate in a sliding manner, the two pressing columns are fixedly arranged above the hydraulic pressure plates, the left side and the right side of the lower pressure plate are respectively provided with through holes, the two pressing columns are respectively connected in the sliding manner, the pressing columns are positioned below the upper pressure plate, the pressing columns are filled below the hydraulic plate according to the tube wall thickness of the seamless steel tube, the pressure guide plate is gradually increased, the pressure resistance is respectively, the inner wall of the top pressure guide plate is connected with the top pressure tube is connected with the bottom plate, the top cavity is fixedly connected with the bottom of the bottom plate, and the two pressure guide tubes, and the inner side of the pressure body are respectively, and the bottom.
The invention further discloses that the impact device is characterized in that the front side and the rear side of the top cavity are respectively provided with an impact cavity, the inner walls of the impact cavities are respectively and slidably connected with an impact plate, an impact rod is fixedly arranged above the impact plates, a through hole is arranged between the placement block and the lower pressure plate, the upper end of the impact rod is positioned in the through hole, the impact plates are connected with the bottom springs of the inner walls of the impact cavities, the bottoms of the top cavities are respectively connected with the bottoms of the impact cavities through pipelines, and a second control valve is arranged in each pipeline.
The invention further discloses that the upper parts of the two impact cavities and the upper part of the top cavity are connected with air inlet pipes, the inner parts of the air inlet pipes are respectively provided with one-way valves I, the upper parts of the two impact cavities are respectively connected with an external pipeline, the pipeline is internally provided with one-way valves II, one side of the ejector rod is fixedly provided with a blocking block, one side of the upper part of the top cavity is connected with an air outlet pipe, and the inner ends of the air outlet pipes are provided with notches and the blocking blocks are in sliding connection with the notches.
The invention further discloses an operation method of the pressure-resistant detection equipment, which comprises the steps of S1, placing a seamless steel pipe on a placement block, then starting the pressure-resistant detection equipment, operating a hydraulic press, driving a pressing block to move downwards, pressing the pressing block and the placement block up and down, S2, recognizing the pipe wall thickness of the seamless steel pipe by a thickness recognition module, controlling the changing speed of the hydraulic press which is gradually increased according to the pipe wall thickness of the seamless steel pipe by a power control module, simultaneously controlling a valve I to open, pressing a push rod below a lower pressing plate to enable the seamless steel pipe to bear force bidirectionally, S3, recognizing whether the seamless steel pipe is deformed by a deformation recognition module, thereby detecting the pressure resistance of the seamless steel pipe, simultaneously driving the hydraulic press to stop continuously pressing when the seamless steel pipe is deformed, S4, resetting the hydraulic press after the pressure-resistant detection is finished, simultaneously controlling the valve I to be closed, controlling the valve II to open, impacting the bottom surface of the seamless steel pipe by an impact rod, ejecting the placement block, simultaneously impacting the bottom surface of the seamless steel pipe once, vibrating the lower pressing plate by a push rod, and vibrating the seamless steel pipe, loosening, S5, taking out the detected seamless steel pipe, and re-opening the control valve I,
The middle is separated by three seconds, and then the second control valve is driven to close.
The invention further relates to the step S2,V is the changing speed of the power of the hydraulic machine increasing gradually, V max is the fastest changing speed of the power of the hydraulic machine increasing gradually, Q is the pipe wall thickness of the seamless steel pipe, Q max is the maximum pipe wall thickness of the seamless steel pipe, the thicker the pipe wall of the seamless steel pipe is, the faster the changing speed of the power of the hydraulic machine increasing gradually is, and conversely, the slower the changing speed of the power of the hydraulic machine increasing gradually is.
In the present invention, in step S4, when the seamless steel pipe needs to be taken out after the pressure resistance test is completed, the seamless steel pipe is impacted and vibrated.
Compared with the prior art, the invention has the beneficial effects that the reverse extrusion mechanism is adopted to enable the upper part and the lower part of the seamless steel tube to be subjected to extrusion force, so that the deformation speed of the seamless steel tube can be accelerated, and the pressure resistance detection efficiency is improved;
After the pressure resistance detection is finished, the impact rod is made to impact the bottom surface of the seamless steel pipe, the seamless steel pipe can be smoothly ejected out of the placement block, the seamless steel pipe can be conveniently and quickly taken out, the detection efficiency is further improved, meanwhile, the ejector rod firstly moves downwards and then moves upwards quickly to impact the bottom surface of the lower pressing plate, so that vibration is generated, the seamless steel pipe and the placement block can be loosened by vibration, and the seamless steel pipe can be taken out more quickly and efficiently;
Through the discernment to seamless steel pipe thickness and to the control of hydraulic press, on the one hand to the thicker seamless steel pipe of thickness, pressure resistance itself is high to accelerate pressure change speed, thereby can improve detection efficiency, on the other hand to thinner seamless steel pipe, the bearing force is relatively poor, thereby slows down pressure change speed, makes thinner seamless steel pipe can not take out the too big deformation that produces of stress at one stroke, prevents that follow-up seamless steel pipe deformation from being too big to block in the settling block, thereby be convenient for take out seamless steel pipe.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the lower platen of the present invention;
FIG. 3 is a schematic view of the internal structure of the hydraulic chamber of the present invention;
FIG. 4 is a schematic view of the internal structure of the impingement chamber of the present invention;
FIG. 5 is a schematic illustration of the piping connections between the impact chamber, top chamber and hydraulic chamber of the present invention;
FIG. 6 is a schematic view of the internal structure of the top chamber of the present invention;
FIG. 7 is a schematic view of a block and slot of the present invention;
FIG. 8 is a schematic view of the mounting position of the stopper of the present invention;
in the figure, 1, a bottom plate, 2, a pillar, 3, a top plate, 4, a hydraulic press, 5, an upper pressing plate, 51, a pressing block, 6, a lower pressing plate, 61, a placement block, 62, a counter bore, 63, a hydraulic cavity, 631, a hydraulic plate, 632, a pressing rod, 64, a top cavity, 641, a sliding plate, 642, a top rod, 643, a blocking block, 644, an air outlet pipe, 645, a notch, 65, a liquid guide pipe, 66, an impact cavity, 661, an impact plate, 662, an impact rod, 67, a through hole, 68, an air inlet pipe, 7, a supporting pillar, 71, a limiting block and 8, a camera.
Detailed Description
The technical scheme of the present invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the invention provides a pressure-resistant detection device and method based on a seamless steel tube, comprising a seamless steel tube pressure-resistant detection machine, wherein the seamless steel tube pressure-resistant detection machine comprises a bottom plate 1, four support posts 2, a top plate 3, a hydraulic press 4, an upper press plate 5, a lower press plate 6 and four support posts 7;
The bottom of the upper pressing plate 5 is fixedly provided with a pressing block 51, the upper side of the lower pressing plate 6 is fixedly provided with a placement block 61, one side of the bottom plate 1 is fixedly provided with a camera 8, the inside of the camera 8 is provided with a thickness recognition module and a deformation recognition module, the inside of the hydraulic press 4 is provided with a power control module, the thickness recognition module is electrically connected with the power control module, the thickness recognition module is used for recognizing the pipe wall thickness of a seamless steel pipe, the power control module is used for controlling the gradual increasing change speed of the power of the hydraulic press 4 according to the pipe wall thickness of the seamless steel pipe, and the deformation recognition module is used for recognizing whether the seamless steel pipe is deformed or not, so that the pressure resistance of the seamless steel pipe is detected;
The bottom plate 1 is fixedly connected with the top plate 3 through four support posts 2, the hydraulic press 4 is fixedly arranged above the top plate 3, the upper pressing plate 5 is fixedly connected with the output end of the hydraulic press 4, counter bores 62 are formed in the periphery of the lower pressing plate 6, limiting blocks 71 are fixedly arranged at the upper ends of the four support posts 7, the limiting blocks 71 are slidably connected in the counter bores 62, and the lower ends of the support posts 7 are mutually fixed with the upper surface of the bottom plate 1;
An operator puts the seamless steel pipe on the placement block 61, then the hydraulic press 4 operates to drive the upper pressing plate 5 to move downwards, so as to drive the pressing block 51 to move downwards until the lower surface of the pressing block 51 contacts with the surface of the seamless steel pipe and extrudes each other, and the placement block 61 and the pressing block 51 extrude the seamless steel pipe to carry out pressure resistance detection work of the seamless steel pipe;
In the detection process, the hydraulic press 4 gradually increases the pressure according to the thickness of the pipe wall, so that the pressure of the pressing block 51 on the seamless steel pipe gradually increases, the pressure increasing speed is controlled, the seamless steel pipe is prevented from being excessively deformed, after the seamless steel pipe is deformed, the deformation recognition module recognizes the deformation of the seamless steel pipe, the hydraulic press 4 is controlled to stop pressing, meanwhile, the pressure of the hydraulic press 4 is collected, the pressure resistance of the seamless steel pipe is judged, the detection efficiency is high, the detection precision is high, the automatic detection is realized, and the operation is convenient and quick.
The lower pressure plate 6 comprises a backward extrusion mechanism, and the backward extrusion mechanism comprises two hydraulic cavities 63 and a top cavity 64;
The two hydraulic cavities 63 are respectively arranged at the left side and the right side of the bottom of the lower pressing plate 6 and are fixed with the upper surface of the bottom plate 1, the inner walls of the two hydraulic cavities 63 are respectively and slidably connected with a hydraulic plate 631, pressing columns 632 are fixedly arranged above the two hydraulic plates 631, through holes are respectively arranged at the left side and the right side of the lower pressing plate 6, the two pressing columns 632 are respectively and slidably connected in the through holes, and the pressing columns 632 are positioned below the upper pressing plate 5;
The lower part of the hydraulic plate 631 is filled with hydraulic oil, the inner wall of the top cavity 64 is connected with a sliding plate 641 in a sliding way, a push rod 642 is fixedly arranged above the sliding plate 641, the upper end of the push rod 642 is positioned below the lower pressure plate 6, and the top cavity 64 is positioned between the lower pressure plate 6 and the bottom plate 1 and is fixed with the upper surface of the bottom plate 1;
The bottoms of the two hydraulic cavities 63 and the bottom of the top cavity 64 are both connected with a liquid guide pipe 65, a first control valve is arranged in the liquid guide pipe 65, a hydraulic plate 631 is connected with the bottom spring of the inner wall of the hydraulic cavity 63, and a sliding plate 641 is connected with the bottom spring of the inner wall of the top cavity 64;
When the upper pressing plate 5 moves downwards, the bottom surface of the upper pressing plate 5 contacts with the upper end of the pressing column 632 and presses mutually, the pressing column 632 is stressed, meanwhile, the control valve is opened, the pressing column 632 drives the hydraulic plate 631 to slide downwards along the inner wall of the hydraulic cavity 63, the spring is stressed and deformed, hydraulic oil enters the top cavity 64 through the liquid guide tube 65 after being extruded, the hydraulic oil pushes the sliding plate 641 to slide upwards along the inner wall of the top cavity 64, the spring is stressed and deformed, the sliding plate 641 drives the ejector rod 642 to move upwards, the ejector rod 642 pushes against the bottom surface of the lower pressing plate 6 and applies pressure to the ejector rod, so that the upper part and the lower part of a seamless steel pipe are subjected to extrusion force, the deformation speed of the seamless steel pipe can be accelerated, and the pressure resistance detection efficiency is improved;
After the hydraulic press 4 resets, the spring generates a reaction force, so that the hydraulic plate 631 resets, and hydraulic oil in the top cavity 64 is extracted, so that the sliding plate 641 resets, and thus, the rapid detection work can be efficiently and continuously performed on all seamless steel pipes needing to be detected for pressure resistance, and the working hours are reduced.
The front side and the rear side of the top cavity 64 are respectively provided with an impact cavity 66, the inner walls of the impact cavities 66 are respectively and slidably connected with an impact plate 661, an impact rod 662 is fixedly arranged above the impact plates 661, a through hole 67 is arranged between the placement block 61 and the lower pressure plate 6, and the upper ends of the impact rods 662 are positioned in the through hole 67;
The impact plate 661 is connected with the bottom of the inner wall of the impact cavity 66 through a spring, the bottom of the top cavity 65 is connected with the bottom of the impact cavity 66 through a pipeline, and a second control valve is arranged in the pipeline;
through the steps, after the pressure resistance detection is finished, the hydraulic machine 4 is ready to reset, the first control valve is closed, then the hydraulic machine 4 resets, the pressing block 51 is driven to reset and separate from the contact with the seamless steel pipe, then the second control valve is opened, the hydraulic oil in the top cavity 64 is released, the hydraulic oil enters the impact cavity 66 through a pipeline, the hydraulic oil pushes the impact plate 661 to rapidly slide upwards along the inner wall of the impact cavity 66, thereby driving the impact rod 662 to rapidly move upwards in the through hole 67, the bottom surface of the seamless steel pipe is impacted, the seamless steel pipe can be smoothly ejected out of the placement block 61, the seamless steel pipe is conveniently and rapidly taken out, the detection efficiency is further improved, after the seamless steel pipe is ejected out, the first control valve is opened, the negative pressure generated in the hydraulic cavity 63 extracts hydraulic oil in the top cavity 64 and the impact cavity 66, and then the second control valve is closed again, and the pressure resistance of the seamless steel pipe can be rapidly detected.
The upper parts of the two impact cavities 66 and the upper part of the top cavity 64 are connected with an air inlet pipe 68, and the inside of the air inlet pipe 68 is provided with a first check valve;
One side of the ejector rod 642 is fixedly provided with a blocking block 643, and one side above the top cavity 64 is connected with an air outlet pipe 644;
The inner end of the air outlet pipe 644 is provided with a notch 645, and a blocking block 643 is connected in the notch 645 in a sliding way;
Through the above steps, when the impact rod 662 impacts the bottom surface of the seamless steel pipe, the impact plate 661 slides upwards along the inner wall of the impact cavity 66, air above the impact plate 661 is extruded and then enters the upper part of the sliding plate 641 through the air inlet pipe 68, so that the sliding plate 641 is stressed downwards, the spring is pressed to deform, meanwhile, the blocking block 643 slides downwards along the notch 645 until the blocking block is separated from contact with the notch 645, the air is quickly discharged through the air outlet pipe 644, the pressure is released, the reaction force generated by the spring pushes the sliding plate 641 to quickly move upwards, the ejector rod 642 moves downwards and then quickly moves upwards to impact the bottom surface of the lower pressure plate 6, vibration is generated, and the vibration can loosen between the seamless steel pipe and the placement block 61, so that the seamless steel pipe can be taken out more quickly and efficiently;
After which when the striking plate 661 is reset, gas is drawn from the outside through the conduit into the striking chamber 66.
The operation method of the pressure-resistant detection device comprises the following steps:
step S1, placing a seamless steel pipe on a placement block 61, then starting pressure-resistant detection equipment, operating a hydraulic press 4, driving a pressing block 51 to move downwards, and vertically extruding the seamless steel pipe by the pressing block 51 and the placement block 61;
S2, the camera 8 recognizes the pipe wall thickness of the seamless steel pipe through the thickness recognition module, and controls the gradual increasing change speed of the power of the hydraulic press 4 according to the pipe wall thickness of the seamless steel pipe through the power control module, and simultaneously controls the opening of a valve, and the ejector rod 642 extrudes the lower part of the lower pressing plate 6 to enable the seamless steel pipe to bear force bidirectionally;
Step S3, recognizing whether the seamless steel tube deforms or not through a deformation recognition module, so that the pressure resistance of the seamless steel tube is detected, and simultaneously, driving the hydraulic press 4 to stop continuously pressurizing when the seamless steel tube deforms;
S4, after the pressure resistance detection is finished, resetting the hydraulic machine 4, closing a first control valve, opening a second control valve, impacting the bottom surface of the seamless steel pipe by an impact rod 662, ejecting the seamless steel pipe out of the placement block 61, impacting the bottom surface of the lower pressure plate 6 once by an ejector rod 642 to generate vibration, and vibrating between the seamless steel pipe and the placement block 61 so as to loosen;
And S5, taking out the detected seamless steel pipe, re-opening the first control valve, and driving the second control valve to close after the interval of three seconds.
In the step S2 of the process,V is the changing speed of the gradual increase of the power of the hydraulic press 4, V max is the fastest changing speed of the gradual increase of the power of the hydraulic press 4, Q is the pipe wall thickness of the seamless steel pipe, Q max is the maximum pipe wall thickness of the seamless steel pipe, the thicker the pipe wall of the seamless steel pipe is, the faster the changing speed of the gradual increase of the power of the hydraulic press 4 is, and conversely, the slower the changing speed is;
On one hand, the pressure resistance is high for the seamless steel tube with thicker thickness, so that the pressure change speed is accelerated, the detection efficiency can be improved, and on the other hand, the pressure bearing force is poor for the thinner seamless steel tube, so that the pressure change speed is slowed down, the thinner seamless steel tube cannot be subjected to overlarge stress at one time to generate larger deformation, the follow-up seamless steel tube is prevented from being excessively deformed and blocked in the placement block 61, and the seamless steel tube is taken out conveniently.
In the step S4, after the pressure resistance detection is finished, when the seamless steel pipe needs to be taken out, impacting the lower part of the seamless steel pipe, and vibrating the seamless steel pipe at the same time;
Can extrude seamless steel pipe and settle piece 61, prevent that seamless steel pipe from taking out seamless steel pipe that can't be quick convenient after the deformation to carry out subsequent detection work, simultaneously through vibrations, can accelerate not hard up break away from between seamless steel pipe and the settled piece 61, guarantee fast take out seamless steel pipe in the maximum degree, detection efficiency further promotes.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Finally, it should be pointed out that the above embodiments are only intended to illustrate the technical solution of the invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
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| CN202410679685.0A CN118583655B (en) | 2024-05-29 | 2024-05-29 | A pressure testing device and method based on seamless steel pipe |
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| CN202410679685.0A CN118583655B (en) | 2024-05-29 | 2024-05-29 | A pressure testing device and method based on seamless steel pipe |
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| CN220188203U (en) * | 2023-05-22 | 2023-12-15 | 无锡华贝钢管制造有限公司 | Pressure-resistant detection device for seamless steel tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117782784A (en) * | 2024-01-31 | 2024-03-29 | 董堰磊 | A concrete strength compression testing process |
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| CN220188203U (en) * | 2023-05-22 | 2023-12-15 | 无锡华贝钢管制造有限公司 | Pressure-resistant detection device for seamless steel tube |
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