CN116593577B - Natural gas pipeline nondestructive inspection equipment - Google Patents
Natural gas pipeline nondestructive inspection equipment Download PDFInfo
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- CN116593577B CN116593577B CN202310879560.8A CN202310879560A CN116593577B CN 116593577 B CN116593577 B CN 116593577B CN 202310879560 A CN202310879560 A CN 202310879560A CN 116593577 B CN116593577 B CN 116593577B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 239000003345 natural gas Substances 0.000 title claims abstract description 37
- 238000007689 inspection Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 90
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 34
- 238000005096 rolling process Methods 0.000 claims abstract description 30
- 239000000523 sample Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 230000000295 complement effect Effects 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 abstract description 18
- 238000000429 assembly Methods 0.000 abstract description 18
- 230000009471 action Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000002474 Tinea Diseases 0.000 description 1
- 241000893966 Trichophyton verrucosum Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
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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
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
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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
- G01N27/9093—Arrangements for supporting the sensor; Combinations of eddy-current sensors and auxiliary arrangements for marking or for rejecting
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention belongs to the technical field of pipeline detection, and particularly discloses natural gas pipeline nondestructive inspection equipment which comprises support rings arranged in pairs, wherein the support rings in pairs are connected together through axial peristaltic telescopic assemblies, the axial peristaltic telescopic assemblies are arranged between the two support rings, automatic rolling transmission assemblies are arranged on two sides of the axial peristaltic telescopic assemblies, the automatic rolling transmission assemblies on two sides are symmetrical relative to the central axis of the axial peristaltic telescopic assemblies, crossed complementary circumferential detection assemblies are arranged on the inner rings of the support rings, penetrating detection coils are arranged on the outer end faces of the support rings, and alternate fixing assemblies are respectively arranged on the outer walls of the two support rings in a penetrating array. According to the invention, through the alternating creeping of the front support ring and the rear support ring, on one hand, the flaw detection of the axial crack of the pipeline is finished through the detection coil, and on the other hand, the probe type detection coil is driven to rotate circumferentially, so that the flaw detection of the circumferential crack of the pipeline is finished.
Description
Technical Field
The invention belongs to the technical field of pipeline detection, and particularly relates to nondestructive inspection equipment for a natural gas pipeline.
Background
The natural gas pipeline refers to a pipeline for conveying natural gas from a mining place or a treatment factory to a city gas distribution center or an industrial enterprise user, which is also called a gas pipeline, and cracks can appear in the natural gas pipeline in the using and production processes, so that flaw detection needs to be carried out on the surface of the natural gas pipeline, vortex nondestructive detection is one of the modes of flaw detection, the vortex detection is a non-contact detection mode, an electromagnetic field and intermetallic electromagnetic induction detection method is adopted, a coil with alternating current is placed on a metal plate to be detected or sleeved outside the metal pipe to be detected, an alternating magnetic field is generated in and near the coil, the eddy-like induction alternating current is generated in a test piece, and the detection coil can be used for detecting the change of a magnetic field caused by vortex under the condition that other factors are relatively unchanged, so that the size and the phase change of vortex in a detection piece can be deduced, and the surface crack defect of the natural gas pipeline can be detected.
In order to improve the defect detection efficiency, the pass-through detection coil is sleeved on the natural gas pipeline to move, the trend of the crack defect of the natural gas pipeline is along the axial direction or the circumferential direction of the pipeline, when the pass-through detection coil moves on the natural gas pipeline, the crack along the axial direction of the pipeline can detect the change of vortex, but the crack along the circumferential direction is consistent with the winding direction of the pass-through detection coil, at the moment, the change of the vortex cannot be detected, and the condition of missed detection can occur; if the probe type detection coil is used for detecting circumferential cracks, the operation efficiency is low due to the large diameter size of the pipeline, and the condition of missed detection is easy to occur.
Therefore, there is a need for a natural gas pipeline nondestructive inspection apparatus that addresses the above-described problems.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the nondestructive flaw detection equipment for the natural gas pipeline, which is used for completing flaw detection of axial cracks of the pipeline through alternating creeping of front and rear support rings, and driving a probe type detection coil to rotate circumferentially to complete flaw detection of the cracks of the pipeline circumferentially.
The technical scheme adopted by the invention is as follows: the invention provides natural gas pipeline nondestructive inspection equipment, which comprises support rings arranged in pairs, wherein the support rings in pairs are connected together through axial peristaltic telescopic components, the axial peristaltic telescopic components are arranged between the two support rings, automatic rolling transmission components are arranged on two sides of the axial peristaltic telescopic components, the automatic rolling transmission components on two sides are symmetrical relative to the central axis of the axial peristaltic telescopic components, crossed complementary circumferential detection components are arranged on the inner ring of the support rings, penetrating detection coils are arranged on the outer end faces of the support rings, alternate fixing components are respectively arranged on the outer walls of the two support rings in a penetrating array, and the alternate fixing components on the outer wall of one support ring are respectively arranged between the adjacent two alternate fixing components on the outer wall of the other support ring.
In order to solve axial removal and circumferential rotation to crack detection to circumference and axial two directions, axial peristaltic expansion subassembly includes fixed sleeve, brace table, peristaltic expansion hydraulic stem, mounting panel, rotatory connecting rod, fixed station and dead lever, the terminal surface of holding ring is located to the fixed station array, two the fixed station one-to-one setting of holding ring terminal surface, the dead lever sets up in pairs, two the dead lever is located respectively the different sides of the fixed station that two holding ring terminal surfaces correspond, one end of dead lever is fixed to be located one side lateral wall of fixed station, the upper wall of dead lever is equipped with spacing spout, the upper wall of dead lever is located in the sliding of brace table, the lower wall symmetry of brace table is equipped with spacing slider, spacing slider is located in the spacing spout, the upper wall of brace table is located to the upper end of fixed sleeve, the upper end of peristaltic expansion hydraulic stem is located to the mounting panel, rotatory connecting rod sets up in pairs, two the rotatory connecting rod is located the different sides of swivel connecting rod and the other side of rotatory connecting rod is located to the other side lateral wall of peristaltic expansion connecting rod, the other side of swivel connecting rod is located.
In order to realize the rotation of circumference, automatic rolling transmission subassembly includes fixed column, rolling baffle, rolling pole, haulage rope and guide pulley, the outer wall that the one end that rotatory connecting rod is close to the mounting panel is located to the fixed column, the one end of rolling pole is rotated through the torsional spring and is located the outer wall that the one end that the dead lever is close to the fixed station, the other end of rolling pole is located to the rolling baffle, the guide pulley is located the dead lever and is kept away from the one end outer wall of fixed station, the winding of one end of haulage rope is located on the rolling pole, the haulage rope walks around guide pulley, the other end of haulage rope is fixed to be located on the fixed column.
In order to realize comprehensive detection of pipeline circumferential cracks, the cross complementary circumferential detection assembly comprises a driving gear, a connecting shaft, a driven gear, a transmission worm, a supporting plate and a connecting ring body, wherein one end of the connecting shaft is arranged on the end face of a winding baffle, the driving gear is arranged on the other end of the connecting shaft, the supporting plates are arranged on the inner end faces of supporting rings in pairs, the transmission worm is arranged between the inner side walls of the supporting plates in pairs, one end of the driven gear is arranged at the position, close to the supporting plates, of the driving gear and meshed with the driven gear, a detection rotating groove is formed in the inner ring of the supporting ring, the connecting ring body is arranged on the inner ring of the supporting ring, a limiting skirt is arranged on the end face of one end of the connecting ring body in a rotating mode, an annular worm wheel disc is arranged on the end face of the other end of the connecting ring body, and the annular worm wheel disc is meshed with the transmission worm.
For the convenience of equipment moving on the pipeline, the fixed subassembly in turn is including fixed hydraulic stem in turn and friction pad, fixed hydraulic stem in turn runs through the outer wall that the array located the support ring, the one end of fixed hydraulic stem in turn is located to the friction pad.
For more comprehensive pipeline crack detection to circumference, the inner ring array of connecting the ring body is equipped with the detection telescopic link, and the detection telescopic link of the inner ring of one of them connecting the ring body is located respectively between two adjacent detection telescopic links of the inner ring of another connecting the ring body, the outer end that detects the telescopic link is equipped with probe type detection coil, and the size of probe type detection coil is greater than the distance that advances when its certain angle of rotation, avoids appearing the condition of missing to examine.
In addition, be equipped with compression spring in the fixed sleeve, the fixed sleeve is slided and is equipped with the movable rod, the one end of compression spring is located to the one end of movable rod, the other end of movable rod is equipped with the walking wheel.
Further, the limiting sliding groove and the limiting sliding block are arranged in a T shape.
The beneficial effects obtained by the invention by adopting the structure are as follows:
1. in the axial peristaltic expansion assembly, the peristaltic expansion hydraulic rod moves upwards to drive the mounting plate to move upwards, the fixing rods move towards each other along the horizontal direction at the moment, the two fixing rods are gradually overlapped, so that the distance between the two fixing platforms is reduced, the rotary connecting rod rotates around one end connected with the fixing platforms, the other end of the rotary connecting rod drives the fixing column to move, the fixing column pulls the traction rope outwards, the traction rope pulls the rolling rod to rotate, the rolling rod drives the rolling baffle to rotate so as to drive the connecting shaft to rotate, the driving gear rotates and the driven gear is meshed, the driving worm is linked to drive the annular worm wheel disc, the connecting ring body drives the detection telescopic rod to rotate and the probe type detection coil to rotate, the detection and flaw detection of the circumferential cracks of the pipeline are realized, and at the moment, the two support rings alternately creep forwards, and the detection and flaw detection of the axial cracks of the pipeline can be completed through the detection coil;
2. in the cross complementary circumference detection assembly, when two support rings alternately move forward, the front annular worm wheel disk and the rear annular worm wheel disk respectively drive the connecting ring body and the probe type detection coil to rotate, and the detection telescopic rods of the inner ring of one connecting ring body are respectively arranged between two adjacent detection telescopic rods of the inner ring of the other connecting ring body, are arranged at intervals, and the size of the probe type detection coil is larger than the advancing distance when the probe type detection coil rotates for a certain angle, so that the condition of missing detection is avoided, and the condition that the circumferential flaw detection does not have missing detection can be ensured.
Drawings
FIG. 1 is a schematic perspective view of a nondestructive inspection apparatus for a natural gas pipeline according to the present invention;
FIG. 2 is a schematic perspective view of an axial peristaltic expansion assembly and an automatic rolling transmission assembly of a natural gas pipeline nondestructive inspection device;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a schematic perspective view of a support ring of a nondestructive inspection apparatus for a natural gas pipeline according to the present invention;
FIG. 6 is a schematic perspective view of an annular worm disk of a natural gas pipeline nondestructive inspection apparatus according to the present invention;
FIG. 7 is an enlarged view of portion A of FIG. 1;
FIG. 8 is an enlarged view of portion B of FIG. 2;
FIG. 9 is a schematic perspective view of an alternate fixing assembly of a nondestructive inspection apparatus for a natural gas pipeline according to the present invention;
fig. 10 is a schematic perspective view of a support table of a nondestructive inspection apparatus for a natural gas pipeline according to the present invention.
The device comprises a support ring, 2, an axial peristaltic telescopic assembly, 3, an automatic rolling transmission assembly, 4, a cross complementary circumferential detection assembly, 5, a pass-through detection coil, 6, an alternate fixing assembly, 7, a fixing sleeve, 8, a support table, 9, a peristaltic telescopic hydraulic rod, 10, a mounting plate, 11, a rotary connecting rod, 12, a fixing table, 13, a fixing rod, 14, a fixing column, 15, a rolling baffle, 16, a rolling rod, 17, a traction rope, 18, a guide pulley, 19, a driving gear, 20, a connecting shaft, 21, a driven gear, 22, a transmission worm, 23, an annular worm disk, 24, a support plate, 25, a limiting skirt, 26, a connecting ring body, 27, a detection rotary groove, 28, an alternate fixing hydraulic rod, 29, a friction pad, 30, a detection telescopic rod, 31, a probe type detection coil, 32, a compression spring, 33, a movable rod, 34, a walking wheel, 35, a limiting chute, 36 and a limiting slider.
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.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described 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.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on those shown in the drawings, merely to facilitate description of the invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
As shown in fig. 1, the invention provides nondestructive inspection equipment for a natural gas pipeline, which comprises support rings 1 arranged in pairs, wherein the support rings 1 in pairs are connected together through axial peristaltic telescopic assemblies 2, the axial peristaltic telescopic assemblies 2 are arranged between the two support rings 1, automatic rolling transmission assemblies 3 are arranged on two sides of the axial peristaltic telescopic assemblies 2, the automatic rolling transmission assemblies 3 on two sides are symmetrical relative to the central axis of the axial peristaltic telescopic assemblies 2, cross complementary circumferential detection assemblies 4 are arranged on the inner ring of the support rings 1, penetrating detection coils 5 are arranged on the outer end face of the support rings 1, alternate fixing assemblies 6 are respectively arranged on the outer walls of the two support rings 1 in a penetrating array, and the alternate fixing assemblies 6 on the outer wall of one support ring 1 are respectively arranged between the adjacent two alternate fixing assemblies 6 on the outer wall of the other support ring 1.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 7, fig. 8, fig. 10, in order to solve axial movement and circumferential rotation, thereby detect the crack of circumference and axial two directions, axial peristaltic expansion assembly 2 includes fixed sleeve 7, brace table 8, peristaltic hydraulic stem 9, mounting panel 10, rotary connecting rod 11, fixed table 12 and dead lever 13, the terminal surface of brace table 1 is located to the array of fixed table 12, two fixed table 12 one-to-one of brace ring 1 terminal surface set up, dead lever 13 sets up in pairs, two dead levers 13 are located respectively the different sides of fixed table 12 that two brace ring 1 terminal surfaces correspond, one end of dead lever 13 is fixed to be located one side lateral wall of fixed table 12, the upper wall of fixed lever 13 is equipped with spacing slide 35, the upper wall of fixed lever 13 is located in the sliding way of brace table 8, the lower wall symmetry of brace table 8 is equipped with spacing slide 36, the upper end of fixed sleeve 7 is located the lower wall of brace table 8, two fixed sleeve 7 are located the fixed table 12 one side of rotary connecting rod 11, the other side is located to the other side of rotary connecting rod 11, the same side wall of fixed lever 11 is located to the rotary connecting rod 11, the rotary connecting rod 11 is located to one side of rotary connecting rod 11 is located.
As shown in fig. 2, 3 and 4, in order to realize the rotation in the circumferential direction, the automatic winding transmission assembly 3 includes a fixed column 14, a winding baffle 15, a winding rod 16, a traction rope 17 and a guide pulley 18, wherein the fixed column 14 is arranged on the outer wall of one end of the rotating connecting rod 11, which is close to the mounting plate 10, one end of the winding rod 16 is rotatably arranged on the outer wall of one end of the fixed rod 13, which is close to the fixed table 12, through a torsion spring, the winding baffle 15 is arranged on the other end of the winding rod 16, the guide pulley 18 is arranged on the outer wall of one end of the fixed rod 13, which is far from the fixed table 12, one end of the traction rope 17 is wound on the winding rod 16, the traction rope 17 bypasses the guide pulley 18, and the other end of the traction rope 17 is fixedly arranged on the fixed column 14.
As shown in fig. 1, fig. 5, fig. 6 and fig. 7, in order to realize the comprehensive detection of the circumferential crack of the pipeline, the cross-complementary circumferential detection assembly 4 comprises a driving gear 19, a connecting shaft 20, a driven gear 21, a transmission worm 22, a supporting plate 24 and a connecting ring body 26, one end of the connecting shaft 20 is arranged on the end face of the winding baffle 15, the driving gear 19 is arranged on the other end of the connecting shaft 20, the supporting plate 24 is arranged on the inner end face of the supporting ring 1 in pairs, the transmission worm 22 is arranged between the inner side walls of the paired supporting plates 24, the driven gear 21 is arranged at the position where one end of the transmission worm 22 is close to the supporting plate 24, the driving gear 19 is meshed with the driven gear 21, a detection rotating groove 27 is formed in the inner ring of the supporting ring 1, a limit skirt 25 is arranged on the end face of the connecting ring body 26, a ring worm wheel 23 is arranged on the end face of the other end of the connecting ring body 26 and meshed with the transmission worm 22.
As shown in fig. 1 and 9, in order to facilitate the movement of the device on the pipe, the alternate fixing assembly 6 includes an alternate fixing hydraulic rod 28 and a friction pad 29, the alternate fixing hydraulic rod 28 is disposed on the outer wall of the support ring 1 in a penetrating array, and the friction pad 29 is disposed on one end of the alternate fixing hydraulic rod 28.
As shown in fig. 1 and 6, for more comprehensive detection of a circumferential pipeline crack, the inner ring array of the connection ring body 26 is provided with detection telescopic rods 30, wherein the detection telescopic rods 30 of the inner ring of one connection ring body 26 are respectively arranged between two adjacent detection telescopic rods 30 of the inner ring of the other connection ring body 26, the outer end of the detection telescopic rod 30 is provided with a probe type detection coil 31, and the size of the probe type detection coil 31 is larger than the advancing distance when the probe type detection coil rotates for a certain angle, so that the condition of missed detection is avoided.
As shown in fig. 3, a compression spring 32 is disposed in the fixed sleeve 7, a movable rod 33 is slidably disposed in the fixed sleeve 7, one end of the movable rod 33 is disposed at one end of the compression spring 32, and a travelling wheel 34 is disposed at the other end of the movable rod 33.
As shown in fig. 2, 8 and 10, the limit chute 35 and the limit slider 36 are provided in a T shape.
When the device is specifically used, the two support rings 1 are sleeved on a natural gas pipeline, at the moment, the travelling wheels 34 are pressed on the outer wall of the natural gas pipeline under the action of the pressing springs 32 and the movable rods 33, when the device needs to move forwards, the front (in the forward direction) alternating fixed hydraulic rods 28 are adjusted to stretch, the alternating fixed hydraulic rods 28 push the friction pads 29 to be pressed on the outer wall of the natural gas pipeline, so that the front support rings 1 are fixed at the position, then the peristaltic telescopic hydraulic rods 9 are adjusted, the peristaltic telescopic hydraulic rods 9 move upwards, the mounting plates 10 are driven to move upwards, the fixed rods 13 move towards each other along the horizontal direction, the two fixed rods 13 are gradually overlapped, at the moment, the rear support rings 1 are driven to move forwards, the distance between the two fixed platforms 12 is reduced, the rotary connecting rods 11 rotate around one ends connected with the fixed platforms 12, at this time, the other end of the rotary connecting rod 11 drives the fixed column 14 to move, the fixed column 14 pulls the pulling rope 17 outwards, the pulling rope 17 pulls the winding rod 16 to rotate, the winding rod 16 drives the winding baffle 15 to rotate, the winding baffle 15 drives the connecting shaft 20 to rotate, the connecting shaft 20 drives the driving gear 19 to rotate, the driving gear 19 drives the driven gear 21 to rotate, the driven gear 21 drives the driving worm 22 to rotate, the driving worm 22 is meshed with the annular worm disk 23, the annular worm disk 23 drives the connecting ring body 26 to rotate, the connecting ring body 26 drives the detecting telescopic rod 30 to rotate, the detecting telescopic rod 30 drives the probe type detecting coil 31 to rotate by a certain angle, the sum of the rotating angles of all the probe type detecting coils 31 is larger than 360 degrees, meanwhile, the probe type detecting coil 31 moves forwards for a certain distance under the driving of the supporting ring 1 and the connecting ring body 26, the probe type detecting coil 31 spirally advances relative to a natural gas pipeline, the probe type detection coil 31 detects circumferential cracks of the outer wall of the natural gas pipeline, and the size of the probe type detection coil 31 is larger than the advancing distance when the probe type detection coil rotates for a certain angle, so that the condition of missed detection is avoided;
when the detection needs to be continued to move forwards, the rear alternate fixed hydraulic rods 28 are adjusted to stretch, the alternate fixed hydraulic rods 28 push the friction pads 29 to be pressed on the outer wall of the natural gas pipeline, then the front alternate fixed hydraulic rods 28 are adjusted to shorten, at the moment, the front friction pads 29 are separated from the outer wall of the natural gas pipeline, then the peristaltic telescopic hydraulic rods 9 are adjusted to shorten, at the moment, the two fixed rods 13 move reversely, at the moment, the rear support ring 1 is fixed, the front support ring 1 moves forwards, the distance between the two fixed platforms 12 is increased, at the moment, the traction rope 17 is rewound under the action of the winding rod 16 and the torsion spring, the winding rod 16 drives the winding baffle 15 to rotate reversely, the winding baffle 15 drives the connecting shaft 20 to rotate reversely, the driving gear 19 drives the driven gear 21 to rotate reversely, the driven gear 21 drives the driving worm 22 to rotate reversely, and the driving worm 22 drives the annular worm wheel 23 to rotate reversely, so that the detection coil 31 is driven reversely to rotate a certain angle, and circumferential crack detection on the outer wall of the natural gas pipeline is realized;
during the above operation, the support ring 1 is advanced alternately in sequence, at which time the through-type detection coil 5 detects an axial crack of the natural gas pipeline.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The invention and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the invention as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present invention.
Claims (6)
1. The utility model provides a natural gas pipeline nondestructive test equipment, includes support ring (1) that sets up in pairs, its characterized in that: the pair of support rings (1) are connected together through the axial peristaltic telescopic components (2), the axial peristaltic telescopic components (2) are arranged between the two support rings (1), automatic rolling transmission components (3) are arranged on two sides of the axial peristaltic telescopic components (2), the automatic rolling transmission components (3) on two sides are symmetrical relative to the central axis of the axial peristaltic telescopic components (2), crossed complementary circumferential detection components (4) are arranged on the inner ring of the support rings (1), penetrating detection coils (5) are arranged on the outer end surfaces of the support rings (1), alternate fixing components (6) are respectively arranged on the outer walls of the two support rings (1) in a penetrating array, and the alternate fixing components (6) on the outer wall of one support ring (1) are respectively arranged between the adjacent two alternate fixing components (6) on the outer wall of the other support ring (1);
the axial peristaltic expansion assembly (2) comprises a fixed sleeve (7), a supporting table (8), peristaltic expansion hydraulic rods (9), a mounting plate (10), a rotary connecting rod (11), a fixed table (12) and a fixed rod (13), wherein the fixed tables (12) are arranged on the end face of the supporting ring (1) in an array mode, the fixed tables (12) on the end face of the supporting ring (1) are arranged in a one-to-one correspondence mode, the fixed rods (13) are arranged in pairs, the two fixed rods (13) are respectively arranged on different sides of the fixed tables (12) corresponding to the end faces of the two supporting rings (1), one end of each fixed rod (13) is fixedly arranged on one side wall of each fixed table (12), the upper wall of each fixed rod (13) is provided with a limiting sliding groove (35), the lower wall of each supporting table (8) is symmetrically provided with a limiting sliding block (36), the limiting sliding blocks (36) are arranged in the limiting sliding grooves (35), the upper ends of the fixed sleeve (7) are arranged on the lower wall of each supporting table (8), one end of each fixed rod (7) is fixedly arranged on one side wall of each fixed rod (12), the upper wall of each fixed rod (9) is arranged between the corresponding peristaltic expansion hydraulic rod (9), the rotary connecting rods (11) are arranged in pairs, the two rotary connecting rods (11) are arranged on different sides of the fixed table (12) and the mounting plate (10), the two rotary connecting rods (11) are symmetrical relative to the axis of the peristaltic telescopic hydraulic rod (9), one end of each rotary connecting rod (11) is rotationally arranged on the side wall of the other side of the fixed table (12), and the other end of each rotary connecting rod (11) is rotationally arranged on the side wall of one side of the mounting plate (10);
automatic rolling drive assembly (3) include fixed column (14), rolling baffle (15), rolling pole (16), haulage rope (17) and guide pulley (18), the outer wall that one end of rotatory connecting rod (11) is close to mounting panel (10) is located to fixed column (14), the outer wall that one end that fixed rod (13) is close to fixed station (12) is located in the one end of rolling pole (16) through torsional spring rotation, the other end of rolling pole (16) is located to rolling baffle (15), one end outer wall that fixed station (12) was kept away from to fixed rod (13) is located to guide pulley (18), on rolling pole (16) is located in the one end winding of haulage rope (17), guide pulley (18) is walked around to haulage rope (17) the other end of haulage rope (17) is fixed to be located on fixed column (14).
2. A natural gas pipeline nondestructive inspection apparatus according to claim 1, wherein: the utility model provides a cross complementary circumference detection subassembly (4) includes driving gear (19), connecting axle (20), driven gear (21), drive worm (22), backup pad (24) and go-between body (26), the terminal surface of rolling baffle (15) is located to the one end of connecting axle (20), the other end of connecting axle (20) is located to driving gear (19), the inner terminal surface of holding ring (1) is located in pairs in backup pad (24), drive worm (22) are located between the inside wall of paired backup pad (24), driven gear (21) are located the one end of drive worm (22) and are close to backup pad (24) department, the inner circle of holding ring (1) is equipped with detects rotary groove (27), the inner circle of holding ring (1) is located to go-between body (26), the one end terminal surface of holding ring (26) is equipped with spacing shirt rim (25), the other end terminal surface of connecting ring (26) is equipped with annular rim (23), annular rim (23) and worm (22) meshing.
3. A natural gas pipeline nondestructive inspection apparatus according to claim 2, wherein: the alternate fixing assembly (6) comprises alternate fixing hydraulic rods (28) and friction pads (29), the alternate fixing hydraulic rods (28) are arranged on the outer wall of the support ring (1) in a penetrating mode, and the friction pads (29) are arranged at one ends of the alternate fixing hydraulic rods (28).
4. A natural gas pipeline nondestructive inspection apparatus according to claim 3, wherein: the inner ring array of the connecting ring body (26) is provided with detection telescopic rods (30), the detection telescopic rods (30) of the inner ring of one connecting ring body (26) are respectively arranged between two adjacent detection telescopic rods (30) of the inner ring of the other connecting ring body (26), and the outer ends of the detection telescopic rods (30) are provided with probe type detection coils (31).
5. A natural gas pipeline nondestructive inspection apparatus according to claim 4, wherein: the novel hydraulic pressure device is characterized in that a compression spring (32) is arranged in the fixed sleeve (7), a movable rod (33) is arranged in the fixed sleeve (7) in a sliding mode, one end of the movable rod (33) is arranged at one end of the compression spring (32), and a travelling wheel (34) is arranged at the other end of the movable rod (33).
6. A natural gas pipeline nondestructive inspection apparatus according to claim 5, wherein: the limiting sliding groove (35) and the limiting sliding block (36) are arranged in a T shape.
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| CN202310879560.8A CN116593577B (en) | 2023-07-18 | 2023-07-18 | Natural gas pipeline nondestructive inspection equipment |
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| CN202310879560.8A CN116593577B (en) | 2023-07-18 | 2023-07-18 | Natural gas pipeline nondestructive inspection equipment |
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| CN116593577B true CN116593577B (en) | 2023-09-22 |
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| CN117092209B (en) * | 2023-10-16 | 2023-12-26 | 山东瑞诚智能制造有限公司 | Vortex detection device for brake disc cracks |
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