CN111650051A - Pipeline hydrostatic test system and test method - Google Patents
Pipeline hydrostatic test system and test method Download PDFInfo
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- CN111650051A CN111650051A CN202010552214.5A CN202010552214A CN111650051A CN 111650051 A CN111650051 A CN 111650051A CN 202010552214 A CN202010552214 A CN 202010552214A CN 111650051 A CN111650051 A CN 111650051A
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/0605—Mechanical indicating, recording or sensing means
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Abstract
The invention provides a pipeline hydrostatic test testing system and a test testing method, which relate to the technical field of safety measurement of a conveying pipeline and comprise a bottom supporting plate horizontally placed on the ground, wherein a supporting ribbed plate standing upright at the top end of the bottom supporting plate is arranged at the top end of the bottom supporting plate, a top supporting plate fixed horizontally is arranged at the top end of the supporting ribbed plate, a plurality of through long holes are formed in the top end of the top supporting plate, two adjacent long holes are arranged at equal intervals at the top end of the top supporting plate, and a threaded screw rod parallel to the long holes is arranged at the top end of the top supporting plate; according to the invention, the exhaust hole is formed in the middle of the air nozzle, the guide plate is hinged to the inner wall of the exhaust hole, the angle of the guide plate in the exhaust hole is controlled by the guide plate through the third adjusting screw, the blowing direction of the exhaust hole is controlled by changing the swinging angle of the guide plate, airflow is guided to the outer wall of the pipeline, impurities on the outer wall of the pipeline are cleaned, and the simplicity of operation is improved.
Description
Technical Field
The invention relates to the technical field of safety measurement of a conveying pipeline, in particular to a pipeline hydrostatic test system and a test method.
Background
After the pipeline is produced, a hydraulic test is carried out on the pipeline according to the design requirement, and the main purpose of the hydraulic test is to check the mechanical property, the tightness and the vacuum retention property of the pipeline. Besides the vacuum pipeline system and the special pipeline system with fire-proof requirements, most pipelines only have strong requirements on the strength and the tightness of the pipelines. In order to test the mechanical properties and strength of the pipeline, a hydraulic test is generally adopted.
At present, a method for testing the mechanical property of a pipeline mainly adopts the step of injecting water pressure into the pipeline for testing, for example, a pipeline water pressure testing sealing tool disclosed in patent No. CN201521045896.1 comprises a pipeline, a blocking plate arranged at the pipe orifice of the pipeline and a group of hoops clamped on the outer wall of the pipeline in an involutory manner, a sealing ring is arranged between the pipeline and the blocking plate, the hoops comprise an arc plate and flat plates symmetrically distributed at the two ends of the arc plate, and the two flat plates at the same side are fixedly connected through a group of locking bolts. The closure plate passes through a plurality of groups of tensioning assembly fixed connection with the staple bolt, and tensioning assembly sets up to 3 groups, and tensioning assembly includes fixed connection at the first journal stirrup at closure plate border, fixed connection at the second journal stirrup of arc board and sets up the tie bolt between first journal stirrup and second journal stirrup. A rib plate is fixedly connected between the arc plate and the flat plate, so that the flat plate is prevented from being deformed due to overlarge bolt locking force. The device is convenient to mount and dismount, reduces welding amount, protects the pipeline from being damaged, can be repeatedly recycled, and saves production cost.
At present the pipeline is inherent to be full of water pressure, and the pipeline wall can produce inflation and fracture, and is current, and to the inflation of pipeline mainly be through visual observation pipeline wall, observe that pipeline wall inflation thickening then is unqualified, and in experimental test process, the pipeline wall can only produce micro-expansion sometimes, and the naked eye is difficult to direct observation, causes experimental test inaccurate easily, influences pipeline later stage safety in utilization.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a pipeline hydraulic test system and a test method, which solve the technical problems that the pipeline wall is expanded and cracked when the pipeline is internally filled with hydraulic pressure, the expansion of the pipeline is unqualified when the expansion of the pipeline is observed by observing the pipeline wall by naked eyes, and the pipeline wall is only slightly expanded sometimes in the test process, so that the pipeline is difficult to observe directly by naked eyes, the test is inaccurate and the later-stage use safety of the pipeline is affected.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: a pipeline hydrostatic test testing system comprises a bottom supporting plate horizontally placed on the ground, a supporting rib plate vertically standing on the top end of the bottom supporting plate is arranged at the top end of the bottom supporting plate, the top end of the supporting rib plate is provided with a horizontally fixed top supporting plate, the top end of the top supporting plate is provided with a plurality of through long holes, two adjacent long holes are arranged at equal intervals at the top end of the top supporting plate, the top end of the top supporting plate is provided with a threaded screw rod parallel to the long hole, the top end of the top supporting plate is provided with a sliding block, the middle part of the sliding block is provided with a through threaded hole, the threaded hole in the middle part of the sliding block is arranged on the threaded screw rod in a thread matching way, one end of the threaded screw rod is driven to rotate by a servo motor, the bottom of the sliding block is provided with hanging rods at equal intervals, and each hanging rod penetrates through a long hole at the top end of the top supporting plate and extends out to the lower part of the top supporting plate;
the top end of the bottom support plate is provided with a guide rail with a trapezoidal structure, the top end of the bottom support plate is provided with a movable rib plate which is vertically arranged at the top end of the bottom support plate, the bottom end of the movable rib plate is arranged on the guide rail in a sliding fit mode, the top end of the bottom support plate is fixedly provided with a hydraulic cylinder, the hydraulic cylinder extends rightwards to form a piston rod, the top end of the piston rod is fixed on the movable rib plate, the left side of the middle part of the guide rail is provided with a plurality of sealing clamping discs, the right side of the middle part of the supporting rib plate is also provided with a plurality of sealing clamping discs corresponding to the guide rail, a pipeline is arranged between the movable rib plate and the supporting rib plate, the two ends of the pipeline;
the sealing clamping disc comprises three synchronous clamping claws arranged on the clamping surface of the sealing clamping disc at equal intervals and a sealing gasket arranged on the clamping surface of the sealing clamping disc, a rotatable disc-shaped bevel gear is arranged in the sealing clamping disc through a bearing, the three synchronous clamping claws are meshed with the disc-shaped bevel gear in the sealing clamping disc, the left side of the disc-shaped bevel gear is driven to rotate in the sealing clamping disc through the bevel gear, and the top end of a shaft lever of the bevel gear extends out of the outer circular surface of the sealing clamping disc; the water injection pipe is arranged in the middle of the sealing clamping disc on the movable rib plate, one end of the water injection pipe extends into the pipeline, the other end of the water injection pipe extends out of the right end of the movable rib plate, a water pipe connector is arranged at the top end of the water injection pipe extending out of the right end of the movable rib plate in a clamping mode, and the water injection pipe extending out of the right end of the movable rib plate is controlled to be opened through an electromagnetic sealing valve.
Each hanging rod extending downwards at equal intervals is close to the right side of the pipeline, a first level meter is hinged to the middle of each hanging rod, one side of each first level meter is hinged to each hanging rod, a first roller wheel standing downwards is arranged at the bottom end of the other side of each first level meter, and the first roller wheels are in rolling connection with the outer wall of the pipeline;
the suspension rod is provided with a second level gauge at the bottom, one side of the second level gauge is hinged to the suspension rod, the top end of the second level gauge keeps the second level gauge horizontal through the tension spring, a second roller is fixed at the top end of the other side of the second level gauge, and the second roller is connected with the outer wall of the pipeline in a rolling mode.
As a preferable technical scheme of the invention, the bottom end of the first level gauge is provided with a supporting arm which is horizontally fixed, the top end of the supporting arm is provided with an adjusting screw in a thread fit mode, and the first level gauge hinged to the middle part of the suspension rod is adjusted to be horizontal through the adjusting screw.
As a preferred technical scheme of the present invention, a nut sleeve is disposed near the bottom of the suspension rod, a through threaded hole is formed in the middle of the nut sleeve, a second adjusting screw is connected to the threaded hole of the nut sleeve through a thread, and the top end of the tension spring is connected to the bottom end of the second adjusting screw.
As a preferable technical scheme of the invention, the top end of the sliding block is provided with an air passage interface, the interior of the suspension rod is provided with an air passage, the middle part of the suspension rod is provided with a plurality of air nozzles, the air injection direction of each air nozzle faces the outer wall of the pipeline, and the interior of the sliding block is provided with an air passage communicated with the air passage in the suspension rod.
As a preferable technical scheme, the air nozzle comprises a guide plate, a third adjusting screw and an exhaust hole, the exhaust hole communicated with an air passage in the suspension rod is formed in the middle of the air nozzle, the inner wall of the exhaust hole is hinged with the guide plate, the other end of the guide plate is connected with the third adjusting screw through threads, and the top end of the third adjusting screw extends out of the air nozzle.
As a preferred technical solution of the present invention, a scraping plate is disposed in the rotation direction of the first roller towards the pipeline and the rotation direction of the second roller towards the pipeline, the scraping plate is a curved plate with an arc-shaped structure, and a top end of the scraping plate is close to an outer wall of the pipeline.
As a preferable technical solution of the present invention, the first level gauge and the second level gauge are staggered.
A pipeline hydrostatic test testing method specifically comprises the following steps:
s1, mounting a pipeline: a plurality of pipelines are arranged between the movable rib plates and the support rib plates at equal intervals, and two ends of each pipeline are clamped and fixed through the sealing clamping discs on two sides;
s2, injection water pressure: injecting water pressure into the interior of the pipeline clamped and fixed on the two side sealing clamping discs in the step S1, and communicating the water pressure with an external water source through a water pipe interface, wherein the water pipe interface injects the water pressure into the interior of the pipeline through a water injection pipe;
s3, pressure maintaining observation: performing pressure maintaining observation on the pipeline injected with the water pressure through the water injection pipe in the step S2, opening and closing the water injection pipe through the electromagnetic sealing valve, and performing visual observation on the water pressure in the pipeline;
s4, level meter measurement: in step S3, level measurement is performed on the pipe without obvious expansion observed by naked eyes, the first roller at the bottom of the first level and the second roller at the top of the second level are in rolling contact with the outer wall of the pipe, the first level and the second level move at a constant speed from one end to the other end of the pipe by the constant-speed rotation of the pipe, bubbles inside the level during the movement are observed, and the performance of the pipe for bearing water pressure is determined;
s5, disassembling the pipeline: and (4) disassembling the pipeline after the two gradienters are tested in the step (S4), and moving the sealing clamping discs at the two ends of the pipeline away from the two ends of the pipeline to move the pipeline out of the movable rib plates and the support rib plates so as to finish the test of the pipeline hydrostatic test.
Compared with the prior art, the invention has the beneficial effects that:
a plurality of pipelines are arranged between a movable rib plate and a support rib plate at equal intervals, and two ends of each pipeline are clamped and fixed through sealing clamping discs on two sides; injecting water pressure into the interior of the pipeline clamped and fixed on the sealing clamping discs at the two sides, and communicating the water pressure with an external water source through a water pipe interface, wherein the water pipe interface injects the water pressure into the interior of the pipeline through a water injection pipe; carrying out pressure maintaining observation on the pipeline injected with water pressure through the water injection pipe, opening and closing the water injection pipe through the electromagnetic sealing valve, and carrying out visual observation on the water pressure in the pipeline; the method comprises the following steps of measuring a level meter of a pipeline which is not obviously expanded when observed by naked eyes, enabling a first roller at the bottom of the first level meter and a second roller at the top of the second level meter to be in rolling contact with the outer wall of the pipeline, enabling the first level meter and the second level meter to move at a constant speed from one end to the other end of the pipeline through constant-speed rotation of the pipeline, observing bubbles in the level meter in the moving process, and determining the water pressure bearing performance of the pipeline; the pipeline after the two gradienters are tested is disassembled, the sealing clamping discs at the two ends of the pipeline are moved away from the two ends of the pipeline, so that the pipeline is moved out from the movable rib plates and the supporting rib plates, and the test of the pipeline hydrostatic test is completed.
The first level meter and the second level meter of the invention travel on the outer wall of the pipeline through the rollers, water pressure is injected into the pipeline, sealing and pressure maintaining are carried out for a period of time through the electromagnetic sealing valve pipeline after the water pressure is injected, in the pressure maintaining process, the position with weaker internal organization structure of the pipeline wall can expand, the two level meters travel on the outer wall of the pipeline through the corresponding rollers, in the contact process of the rollers and the outer wall of the pipeline, when the rollers meet the position of the expansion of the pipeline, the rollers push the level meters upwards to incline, the radian of the expansion of the pipeline is judged through the position of bubbles in the level meters manually, the outer wall of the pipeline is tested through the first level meter and the second level meter, and in the process of rotating the pipeline for one circle, the roundness of the pipeline in the pressure maintaining process is measured through the two level meters, and the detection accuracy.
The middle of the suspension rod is provided with a plurality of air nozzles, the air injection direction of each air nozzle faces the outer wall of the pipeline, air flow sprayed by the air nozzles blows away sundries adhered to the outer wall of the pipeline, the rollers are prevented from rolling the sundries when walking on the outer wall of the pipeline, and the test accuracy of the two gradienters is improved.
The middle part of the air nozzle is provided with an exhaust hole, the inner wall of the exhaust hole is hinged with a guide plate, the angle of the guide plate in the exhaust hole is controlled by the guide plate through a third adjusting screw, the blowing direction of the exhaust hole is controlled by changing the swinging angle of the guide plate, airflow is guided to the outer wall of the pipeline, sundries on the outer wall of the pipeline are cleaned, and the operation simplicity is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front view of a pipeline hydrostatic test testing system of the present invention;
FIG. 2 is a left side view of the pipe hydrostatic test testing system of the present invention;
FIG. 3 is a schematic cross-sectional view of the two ends of the pipe clamped by the sealing and clamping discs according to the present invention;
FIG. 4 is a schematic structural view of a first level and a second level for measuring the outer wall of a pipeline according to the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 3 illustrating the present invention;
FIG. 6 is a schematic view of the internal cross-sectional configuration of an air nozzle in accordance with the present invention;
FIG. 7 is a process flow diagram of the pipeline hydrostatic test testing method of the present invention;
in the figure: 1. the device comprises a bottom support plate, 2, a support rib plate, 3, a top support plate, 4, a motor, 5, a seal clamping disc, 501, a seal gasket, 502, a synchronous clamping claw, 503, a disc-shaped bevel gear, 504, a bevel gear, 6, a servo motor, 7, a sliding block, 8, a first level gauge, 9, a first roller, 10, a second roller, 11, a second level gauge, 12, a hydraulic cylinder, 13, a movable rib plate, 14, a piston rod, 15, a guide rail, 16, a threaded screw rod, 17, a suspension rod, 18, a support arm, 19, an adjusting screw, 20, a tension spring, 21, a second adjusting screw, 22, a nut sleeve, 23, an air nozzle, 24, an electromagnetic seal valve, 25, a water pipe interface, 26, an air flue interface, 27, a water injection pipe, 28 and a scraper.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining with the specific drawings, and it is to be noted that the embodiments and the features in the embodiments can be combined with each other in the application without conflict.
Please refer to fig. 1-7, which are schematic structural diagrams of a pipeline hydraulic test system and a test method;
a pipeline hydrostatic test system comprises a bottom support plate 1 horizontally placed on the ground, a support rib plate 2 vertically standing on the top end of the bottom support plate 1 is arranged at the top end of the bottom support plate 1, a top support plate 3 horizontally fixed is arranged at the top end of the support rib plate 2, a plurality of through long holes are formed in the top end of the top support plate 3, two adjacent long holes are arranged at equal intervals on the top end of the top support plate 3, a threaded screw rod 16 parallel to the long holes is arranged at the top end of the top support plate 3, a slider 7 is embedded in each long hole at the top end of the top support plate 3 in a sliding fit mode, a slider 7 is arranged at the top end of the top support plate 3, a through threaded hole is formed in the middle of the slider 7, the threaded hole in the middle of the slider 7 is arranged on the threaded screw rod 16 in a threaded fit mode, one end of the threaded screw rod 16, each hanging rod 17 extends out to the lower part of the top supporting plate 3 through a long hole at the top end of the top supporting plate 3;
the top end of the bottom support plate 1 is provided with a guide rail 15 with a trapezoidal structure, the top end of the bottom support plate 1 is provided with a movable rib plate 13 standing upright on the top end of the bottom support plate 1, the bottom end of the movable rib plate 13 is arranged on the guide rail 15 in a sliding fit manner, the top end of the bottom support plate 1 is fixedly provided with a hydraulic cylinder 12, the hydraulic cylinder 12 extends rightwards to form a piston rod 14, the top end of the piston rod 14 is fixed on the movable rib plate 13, the left side of the middle of the guide rail 5 is provided with a plurality of sealing clamping discs 5, the right side of the middle of the supporting rib plate 2 is also provided with a plurality of sealing clamping discs 5 corresponding to the guide rail 5, a pipeline is arranged between the movable rib plate 13 and the supporting rib plate 2, two ends of the;
the surface of the sealing clamping disc 5, which is contacted with the top end of the pipeline, is a clamping surface, the sealing clamping disc 5 comprises three synchronous clamping claws 502 which are arranged on the clamping surface of the sealing clamping disc 5 at equal intervals, and a sealing gasket 501 which is arranged on the clamping surface of the sealing clamping disc 5, a rotatable disc-shaped bevel gear 503 is arranged inside the sealing clamping disc 5 through a bearing, the three synchronous clamping claws 502 are meshed with the disc-shaped bevel gear 503 inside the sealing clamping disc 5, the left side of the disc-shaped bevel gear 503 is driven to rotate inside the sealing clamping disc 5 through a bevel gear 504, and the top end of a shaft rod of the bevel gear 504 extends out of the outer circular surface of the; a square hole is formed in the top end of the shaft rod of the bevel gear 504 extending out of the outer circular surface of the sealing clamping disc 5, so that the bevel gear 504 can be pulled by a wrench to rotate in the sealing clamping disc 5;
the three synchronous clamping claws 502 on the clamping surface of the sealing clamping disk 5 are similar to the three-claw chuck principle on a numerical control lathe, and the difference is that the three synchronous clamping claws 502 are all used for clamping a pipeline and automatically correcting the pipeline so that the pipeline is coaxial with the axis of the sealing clamping disk 5.
The middle part of the sealing clamping disc 5 on the movable ribbed plate 13 is provided with a water injection pipe 27, one end of the water injection pipe 27 extends into the pipeline, the other end of the water injection pipe 27 extends towards the right end of the movable ribbed plate 13, the top end of the water injection pipe 27 extending out of the right end of the movable ribbed plate 13 is provided with a water pipe connector 25 in a clamping manner, and the opening of the water injection pipe 27 extending out of the right end of the movable ribbed plate 13 is controlled by an electromagnetic sealing valve 24.
In the invention, the water injection pipe 27 is clamped with the interface of the water pipe interface 25, so that the water injection pipe 27 can rotate at the clamping position of the water pipe interface 25, the water injection pipe 27 is sealed through the electromagnetic sealing valve 24, the pressure of water in the pipeline is maintained, and the outer wall of the pipeline can be conveniently measured through two gradienters in the rotation process of the pipeline.
Each hanging rod 17 extending downwards at equal intervals is close to the right side of the pipeline, a first level meter 8 is hinged to the middle of each hanging rod 17, one side of each first level meter 8 is hinged to each hanging rod 17, a first roller 9 standing downwards is arranged at the bottom end of the other side of each first level meter 8, and each first roller 9 is in rolling connection with the outer wall of the pipeline;
the bottom of the suspension rod 17 is provided with a second level 11, one side of the second level 11 is hinged to the suspension rod 17, the top end of the second level 11 is provided with a tension spring 20 to keep the second level 11 horizontal, the top end of the other side of the second level 11 is fixed with a second roller 10, and the second roller 10 is in rolling connection with the outer wall of the pipeline.
A plurality of pipelines are arranged between the movable rib plate 13 and the support rib plate 2 at equal intervals, and two ends of each pipeline are clamped and fixed through the sealing clamping discs 5 on two sides; water pressure is injected into the interior of the pipeline clamped and fixed on the sealing clamping discs 5 at the two sides and is communicated with an external water source through a water pipe connector 25, and the water pipe connector 25 injects the water pressure into the interior of the pipeline through a water injection pipe 27; carrying out pressure-maintaining observation on the pipeline injected with water pressure through the water injection pipe 27, opening and closing the water injection pipe 27 through the electromagnetic sealing valve 24, and carrying out visual observation on the water pressure in the pipeline; the pipeline without obvious expansion is observed by naked eyes to be measured by a level meter, a first roller 9 at the bottom of a first level meter 8 and a second roller 10 at the top of a second level meter 11 are in rolling contact with the outer wall of the pipeline, the first level meter 8 and the second level meter 11 move at a constant speed from one end to the other end of the pipeline by the constant-speed rotation of the pipeline, bubbles in the level meter during the moving process are observed, and the performance of the pipeline for bearing water pressure is determined;
the pipeline after the two gradienters are tested is disassembled, the sealing clamping discs 5 at the two ends of the pipeline are moved away from the two ends of the pipeline, so that the pipeline is moved out from the movable rib plates 13 and the supporting rib plates 2, and the test of the pipeline hydrostatic test is completed.
The first level meter 8 and the second level meter 11 of the invention travel on the outer wall of the pipeline through the rollers, water pressure is injected into the pipeline, the pipeline is sealed and pressurized for a period of time through the electromagnetic sealing valve 24 after the water pressure is injected, during the pressure maintaining process, the position with a weaker internal organization structure of the pipeline wall can expand, the two level meters travel on the outer wall of the pipeline through the corresponding rollers, during the contact process of the rollers and the outer wall of the pipeline, when the rollers meet the position of the expansion of the pipeline, the rollers push the level meters upwards to generate inclination, the radian of the expansion of the pipeline is judged through the position of bubbles inside the level meters manually, the outer wall of the pipeline is tested through the first level meter 8 and the second level meter 11, during the rotation of the pipeline for one circle, the roundness of the pipeline during the pressure maintaining process is measured through the two level meters, and the detection accuracy of the pipeline.
The bottom end of the first level gauge 8 is provided with a supporting arm 18, the supporting arm 18 is horizontally fixed, an adjusting screw 19 is installed at the top end of the supporting arm 18 in a thread matching mode, and the first level gauge 8 hinged to the middle of the suspension rod 17 is adjusted to be horizontal through the adjusting screw 19. Adjust first spirit level 8 through adjusting screw 19, be in the horizontal dress state when making first spirit level 8 and the contact of pipeline outer wall, the pipeline of being convenient for rotates the in-process, observes the moving state of the inside bubble of first spirit level 8 to judge the inflation of pipeline.
A nut sleeve 22 is arranged near the bottom of the suspension rod 17, a through threaded hole is formed in the middle of the nut sleeve 22, a second adjusting screw 21 is connected in the threaded hole of the nut sleeve 22 through threads, and the top end of the tension spring 20 is connected to the bottom end of the second adjusting screw 21. The tension spring 20 enables the second roller 10 at the top end of the second level meter 11 to be in close contact with the outer wall of the pipeline, so that the second level meter elastically floats according to expansion of the outer wall of the pipeline, the tension force of the tension spring 20 is adjusted through the second adjusting screw 21, and the accurate measurement of the second level meter 11 is improved.
The top of slider 7 is equipped with air flue interface 26, and the air flue has been seted up to the inside of hanging pole 17, and the middle part of hanging pole 17 is provided with a plurality of air nozzles 23, and the jet-propelled direction of each air nozzle 23 is towards the pipeline outer wall, and the inside of slider 7 is equipped with the air flue and hangs the air flue intercommunication in the pole 17.
Wherein, the invention is provided with a plurality of air nozzles 23 in the middle of the suspension rod 17, the air injection direction of each air nozzle 23 faces to the outer wall of the pipeline, the air flow sprayed by the air nozzle 23 blows away sundries adhered to the outer wall of the pipeline, the roller wheels are prevented from rolling the sundries when walking on the outer wall of the pipeline, and the test accuracy of the two gradienters is improved, in the invention, the scraping plates 28 are arranged in the rotating direction of the first roller wheel 9 facing the pipeline and the rotating direction of the second roller wheel 10 facing the pipeline, the scraping plates 28 are arranged into curved plates with circular arc structures, and the top ends of the scraping plates 28 are close to the outer wall of the pipeline, the sundries adhered to the outer wall of the pipeline are scraped through the scraping plate 28, the scraped sundries are blown away by the air flow sprayed out from the air nozzle 23, the sundries are prevented from being mixed into the roller, the stability of the roller during walking is prevented from being influenced, and the test accuracy of the two gradienters is improved.
The middle part of the air nozzle 23 is provided with an exhaust hole, the inner wall of the exhaust hole is hinged with a guide plate, the angle of the guide plate in the exhaust hole is controlled by the guide plate through a third adjusting screw 19, the blowing direction of the exhaust hole is controlled by changing the swinging angle of the guide plate, airflow is guided on the outer wall of the pipeline, sundries on the outer wall of the pipeline are cleaned, and the operation simplicity is improved.
The first roller 9 and the second roller 10 are provided with a scraping plate 28 facing the rotation direction of the pipeline, the scraping plate 28 is a curved plate with a circular arc structure, and the top end of the scraping plate 28 is close to the outer wall of the pipeline.
According to the invention, the scraping plates 28 are arranged in the rotating direction of the first roller 9 facing the pipeline and the rotating direction of the second roller 10 facing the pipeline, the scraping plates 28 are curved plates with arc structures, the top ends of the scraping plates 28 are close to the outer wall of the pipeline, sundries adhered to the outer wall of the pipeline are scraped through the scraping plates 28, and the scraped sundries are blown away by air flow sprayed out by the air nozzles 23, so that the sundries are prevented from being mixed into the rollers, the stability of the rollers during walking is prevented from being influenced, and the testing accuracy of the two gradienters is improved.
The first gradienters 8 and the second gradienters 11 are arranged in a staggered mode, so that the first gradienters 8 and the second gradienters 11 can detect the area detected by the second gradienters 11 again in the axial moving process of the outer wall of the pipeline along the pipeline, the cyclic iteration is realized, and the detection accuracy of the outer wall of the pipeline is improved.
The invention also provides a pipeline hydrostatic test testing method through the pipeline hydrostatic test testing system, which specifically comprises the following steps:
s1, mounting a pipeline: a plurality of pipelines are arranged between the movable rib plates 13 and the support rib plates 2 at equal intervals, and two ends of each pipeline are clamped and fixed through the sealing clamping discs 5 on two sides;
s2, injection water pressure: injecting water pressure into the inside of the pipeline clamped and fixed on the two side sealing clamping discs 5 in the step S1, communicating with an external water source through the water pipe connector 25, and injecting the water pressure into the inside of the pipeline through the water injection pipe 27 by the water pipe connector 25;
s3, pressure maintaining observation: performing pressure maintaining observation on the pipeline injected with the water pressure through the water injection pipe 27 in the step S2, opening and closing the water injection pipe 27 through the electromagnetic seal valve 24, and performing visual observation on the water pressure in the pipeline;
s4, level meter measurement: in step S3, level measurement is performed on the pipe without obvious expansion observed by naked eyes, the first roller 9 at the bottom of the first level 8 and the second roller 10 at the top of the second level 11 are in rolling contact with the outer wall of the pipe, the first level 8 and the second level 11 move at a constant speed from one end to the other end of the pipe by the constant speed rotation of the pipe, bubbles inside the level during the movement are observed, and the performance of the pipe for bearing the water pressure is determined;
s5, disassembling the pipeline: and (5) disassembling the pipeline after the two gradienters are tested in the step (S4), and moving the sealing clamping discs 5 at the two ends of the pipeline away from the two ends of the pipeline to move the pipeline out of the movable rib plates 13 and the support rib plates 2 to complete the test of the pipeline hydrostatic test.
In addition, the air nozzle 23 and the scraper plate of the invention have the following specific functions:
according to the invention, the plurality of air nozzles 23 are arranged in the middle of the suspension rod 17, the air injection direction of each air nozzle 23 faces the outer wall of the pipeline, the air flow injected by the air nozzles 23 blows away sundries adhered to the outer wall of the pipeline, the roller is prevented from rolling the sundries when walking on the outer wall of the pipeline, and the test accuracy of the two gradienters is improved.
According to the invention, the exhaust hole is formed in the middle of the air nozzle 23, the guide plate is hinged to the inner wall of the exhaust hole, the angle of the guide plate in the exhaust hole is controlled by the guide plate through the third adjusting screw 19, the blowing direction of the exhaust hole is controlled by changing the swinging angle of the guide plate, airflow is guided to the outer wall of the pipeline, sundries on the outer wall of the pipeline are cleaned, and the operation simplicity is improved.
According to the invention, the scraping plates 28 are arranged in the rotating direction of the first roller 9 facing the pipeline and the rotating direction of the second roller 10 facing the pipeline, the scraping plates 28 are curved plates with arc structures, the top ends of the scraping plates 28 are close to the outer wall of the pipeline, sundries adhered to the outer wall of the pipeline are scraped through the scraping plates 28, and the scraped sundries are blown away by air flow sprayed out by the air nozzles 23, so that the sundries are prevented from being mixed into the rollers, the stability of the rollers during walking is prevented from being influenced, and the testing accuracy of two gradienters is improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a pipeline hydrostatic test system, places in the bottom support board on ground including being the level, its characterized in that: the top end of the bottom support plate is provided with a support rib plate standing upright at the top end of the bottom support plate, the top end of the support rib plate is provided with a horizontally fixed top support plate, the top end of the top support plate is provided with a plurality of through long holes, two adjacent long holes are arranged at equal intervals at the top end of the top support plate, the top end of the top support plate is provided with a threaded screw rod parallel to the long holes, the top end of the top support plate is provided with a sliding block, the middle part of the sliding block is provided with a through threaded hole, the threaded hole in the middle part of the sliding block is arranged on the threaded screw rod in a threaded matching mode, one end of the threaded screw rod is driven to rotate by a servo motor, the bottom of the sliding block is provided with suspension rods at equal intervals, and each suspension rod;
the top end of the bottom support plate is provided with a guide rail with a trapezoidal structure, the top end of the bottom support plate is provided with a movable rib plate which is vertically arranged at the top end of the bottom support plate, the bottom end of the movable rib plate is arranged on the guide rail in a sliding fit mode, the top end of the bottom support plate is fixedly provided with a hydraulic cylinder, the hydraulic cylinder extends rightwards to form a piston rod, the top end of the piston rod is fixed on the movable rib plate, the left side of the middle part of the guide rail is provided with a plurality of sealing clamping discs, the right side of the middle part of the supporting rib plate is also provided with a plurality of sealing clamping discs corresponding to the guide rail, a pipeline is arranged between the movable rib plate and the supporting rib plate, the two ends of the pipeline;
the sealing clamping disc comprises three synchronous clamping claws arranged on the clamping surface of the sealing clamping disc at equal intervals and a sealing gasket arranged on the clamping surface of the sealing clamping disc, a rotatable disc-shaped bevel gear is arranged in the sealing clamping disc through a bearing, the three synchronous clamping claws are meshed with the disc-shaped bevel gear in the sealing clamping disc, the left side of the disc-shaped bevel gear is driven to rotate in the sealing clamping disc through the bevel gear, and the top end of a shaft lever of the bevel gear extends out of the outer circular surface of the sealing clamping disc; the middle part of the sealing clamping disc positioned on the movable ribbed plate is provided with a water injection pipe, one end of the water injection pipe extends into the pipeline, the other end of the water injection pipe extends towards the right end of the movable ribbed plate, the top end of the water injection pipe extending out of the right end of the movable ribbed plate is provided with a water pipe interface in a clamping manner, and the opening of the water injection pipe extending out of the right end of the movable ribbed plate is controlled by an electromagnetic sealing valve;
each hanging rod extending downwards at equal intervals is close to the right side of the pipeline, a first level meter is hinged to the middle of each hanging rod, one side of each first level meter is hinged to each hanging rod, a first roller wheel standing downwards is arranged at the bottom end of the other side of each first level meter, and the first roller wheels are in rolling connection with the outer wall of the pipeline;
the suspension rod is provided with a second level gauge at the bottom, one side of the second level gauge is hinged to the suspension rod, the top end of the second level gauge keeps the second level gauge horizontal through the tension spring, a second roller is fixed at the top end of the other side of the second level gauge, and the second roller is connected with the outer wall of the pipeline in a rolling mode.
2. The pipeline hydrostatic test system of claim 1, wherein: the bottom end of the first level meter is provided with a supporting arm which is horizontally fixed, an adjusting screw is installed at the top end of the supporting arm in a thread matching mode, and the first level meter hinged to the middle of the suspension rod is adjusted to be horizontal through the adjusting screw.
3. The pipeline hydrostatic test system of claim 1, wherein: a nut sleeve is arranged at the bottom close to the suspension rod, a through threaded hole is formed in the middle of the nut sleeve, a second adjusting screw is connected into the threaded hole of the nut sleeve through threads, and the top end of the tension spring is connected to the bottom end of the second adjusting screw.
4. The pipeline hydrostatic test system of claim 1, wherein: the top end of the sliding block is provided with an air passage interface, the inside of the suspension rod is provided with an air passage, the middle of the suspension rod is provided with a plurality of air nozzles, the air injection direction of each air nozzle faces the outer wall of the pipeline, and the inside of the sliding block is provided with an air passage communicated with the air passage in the suspension rod.
5. The pipeline hydrostatic test system of claim 4, wherein: the air nozzle comprises a guide plate, a third adjusting screw and an exhaust hole, the exhaust hole communicated with the air passage inside the suspension rod is formed in the middle of the air nozzle, the inner wall of the exhaust hole is hinged to the guide plate, the other end of the guide plate is connected with the third adjusting screw through threads, and the top end of the third adjusting screw stretches out of the air nozzle.
6. The pipeline hydrostatic test system of claim 4, wherein: the first idler wheel is provided with a scraping plate towards the rotation direction of the pipeline and the second idler wheel is provided with a scraping plate towards the rotation direction of the pipeline, the scraping plate is a curved plate with an arc-shaped structure, and the top end of the scraping plate is close to the outer wall of the pipeline.
7. The pipeline hydrostatic test system of claim 1, wherein: the first gradienters and the second gradienters are arranged in a staggered mode.
8. A pipeline hydraulic test testing method is characterized in that the pipeline hydraulic test testing method is mainly completed by the pipeline hydraulic test testing system of claim 5 in a matching mode, and specifically comprises the following steps:
s1, mounting a pipeline: a plurality of pipelines are arranged between the movable rib plates and the support rib plates at equal intervals, and two ends of each pipeline are clamped and fixed through the sealing clamping discs on two sides;
s2, injection water pressure: injecting water pressure into the interior of the pipeline clamped and fixed on the two side sealing clamping discs in the step S1, and communicating the water pressure with an external water source through a water pipe interface, wherein the water pipe interface injects the water pressure into the interior of the pipeline through a water injection pipe;
s3, pressure maintaining observation: performing pressure maintaining observation on the pipeline injected with the water pressure through the water injection pipe in the step S2, opening and closing the water injection pipe through the electromagnetic sealing valve, and performing visual observation on the water pressure in the pipeline;
s4, level meter measurement: in step S3, level measurement is performed on the pipe without obvious expansion observed by naked eyes, the first roller at the bottom of the first level and the second roller at the top of the second level are in rolling contact with the outer wall of the pipe, the first level and the second level move at a constant speed from one end to the other end of the pipe by the constant-speed rotation of the pipe, bubbles inside the level during the movement are observed, and the performance of the pipe for bearing water pressure is determined;
s5, disassembling the pipeline: and (4) disassembling the pipeline after the two gradienters are tested in the step (S4), and moving the sealing clamping discs at the two ends of the pipeline away from the two ends of the pipeline to move the pipeline out of the movable rib plates and the support rib plates so as to finish the test of the pipeline hydrostatic test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010552214.5A CN111650051A (en) | 2020-06-17 | 2020-06-17 | Pipeline hydrostatic test system and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010552214.5A CN111650051A (en) | 2020-06-17 | 2020-06-17 | Pipeline hydrostatic test system and test method |
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| CN111650051A true CN111650051A (en) | 2020-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010552214.5A Withdrawn CN111650051A (en) | 2020-06-17 | 2020-06-17 | Pipeline hydrostatic test system and test method |
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| CN (1) | CN111650051A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692005A (en) * | 2020-12-04 | 2021-04-23 | 天津鑫润泽通钢铁有限公司 | Steel pipe hydraulic press |
| CN114046929A (en) * | 2021-11-08 | 2022-02-15 | 成都国光电气股份有限公司 | Multifunctional vacuum calibration system and method |
-
2020
- 2020-06-17 CN CN202010552214.5A patent/CN111650051A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692005A (en) * | 2020-12-04 | 2021-04-23 | 天津鑫润泽通钢铁有限公司 | Steel pipe hydraulic press |
| CN114046929A (en) * | 2021-11-08 | 2022-02-15 | 成都国光电气股份有限公司 | Multifunctional vacuum calibration system and method |
| CN114046929B (en) * | 2021-11-08 | 2024-05-07 | 成都国光电气股份有限公司 | Multifunctional vacuum calibration system and method |
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Application publication date: 20200911 |