CN113671021A - Detection device in pipeline - Google Patents
Detection device in pipeline Download PDFInfo
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- CN113671021A CN113671021A CN202110932993.6A CN202110932993A CN113671021A CN 113671021 A CN113671021 A CN 113671021A CN 202110932993 A CN202110932993 A CN 202110932993A CN 113671021 A CN113671021 A CN 113671021A
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- detection
- probe
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- pipeline
- pipe
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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
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/85—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields using magnetographic methods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Abstract
The invention belongs to the technical field of pipeline detection, and discloses a pipeline internal detection device, which comprises: a moving carrier that moves in the pipe with the fluid in the pipe or by a traveling mechanism, and an axis of the moving carrier is parallel to an axis of the pipe when moving; the probe detection components are arranged in at least two groups, and each group of probe detection components are sequentially arranged on the outer side of the movable carrier along the axial lead of the movable carrier; the probe detection assembly comprises a plurality of detection parts which are arranged in a surrounding mode by the axis line of the movable carrier, each detection part is provided with an elastic detection end made of elastic materials, a detection probe is arranged in each elastic detection end, and the elastic movement direction of each elastic detection end is radial. The probe detection assembly can always keep a state of abutting and attaching with the inner wall of the pipeline during detection, so that the signal quality and the detection accuracy are improved.
Description
Technical Field
The invention belongs to the technical field of pipeline detection, and particularly relates to a pipeline internal detection device.
Background
The integrity of the pipeline is an important factor about the safety of oil and gas transportation, and the pipeline owner pays great attention to the integrity, and the integrity of the pipeline fails due to pipeline corrosion or damage modes such as punching, stealing oil and the like, so that great economic loss, environment and social influence are caused; therefore, the pipeline needs to be periodically detected to find out the failure conditions such as corrosion, deformation, leakage and the like of the pipeline.
Regarding the internal quality detection of the pipeline, common detection technologies include Magnetic Flux Leakage (MFL), EMAT, piezoelectric ultrasound, and the like, and the most widely used is the magnetic flux leakage detection technology. The existing detection device in the pipeline is generally divided into a plurality of sections, each section realizes different functions, the appearance size of the detector determines the passing performance of the detector, and the joint degree of the probe and the pipe wall influences the quality of a detection signal.
Most of the existing detection devices adopt a floating probe of a multi-link mechanism or a probe structure supported by a spring piece, and after the existing detection devices operate in a pipeline for a long time, parts are impacted and damaged or the spring piece is fatigued, so that the probe is not well attached to the pipe wall, and the signal quality is influenced; furthermore, the multi-stage mechanical structure has a great limitation on the passing ability of the detection device in the pipeline, and the multi-stage structure inevitably enables the detector to pass through the pipeline with a large turning radius only.
Therefore, there is a need to develop a detector having high passability, good adhesion of the probe structure to the pipe wall, and no fatigue or fracture.
Disclosure of Invention
The invention aims to provide a pipeline inner detection device, which solves the problem that the existing detection device has poor fit between a probe and a pipe wall to influence the signal quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
an in-pipe inspection device comprising:
a moving carrier that moves in the pipe with the fluid in the pipe or by a traveling mechanism, and an axis of the moving carrier is parallel to an axis of the pipe when moving; and
the probe detection assemblies are provided with at least two groups, and each group of probe detection components are sequentially arranged on the outer side of the movable carrier along the axial lead of the movable carrier; the probe detection assembly comprises a plurality of detection parts which are arranged in a surrounding way by the axial lead of the movable carrier, each detection part is provided with an elastic detection end made of elastic materials, a detection probe is arranged in each elastic detection end, and the elastic movement direction of each elastic detection end is radial, so that each elastic detection end can be abutted against the inner wall of the pipeline during detection;
in the axial lead direction of the movable carrier, each group of probe detection assemblies are arranged in a staggered manner, so that the total detection range of the elastic detection ends of the probe detection assemblies arranged on the movable carrier covers the circumferential pipe wall of the pipeline.
In a possible implementation mode, one side of each elastic detection end, which is abutted against the inner wall of the pipeline, is provided with a detection contact surface;
when the elastic detection end is abutted against the inner wall of the pipeline, the detection contact surface is attached to the inner wall of the pipeline.
In a possible implementation manner, the detection part comprises a first support made of an elastic material, and two ends of the first support are respectively configured as a connection end and the elastic detection end; the first supporting piece is arranged on the movable carrier through the connecting end, and a detection probe is arranged in the elastic detection end; the elastic detection end can move radially relative to the center of the pipeline around the connecting end under the elastic action of the elastic detection end.
In a possible implementation manner, the first supporting member is further provided with a transition connecting section between the connecting end and the elastic detection end, and the connecting end is vertically connected with the movable carrier.
In a possible implementation manner, the probe detection assembly includes a second support member integrally made of an elastic material, the second support member has an annular connection portion and a plurality of support portions spaced apart from the outer periphery of the annular connection portion, the second support member is sleeved on the outer side of the movable carrier through the annular connection portion, each support portion is configured as an elastic detection end, and a detection probe is disposed in the elastic detection end.
In a possible implementation manner, a transition connecting part is further arranged between the supporting part and the annular connecting part, and the annular connecting part is vertically connected with the movable carrier.
In a possible implementation, the in-duct detection device further comprises a mileage detecting part connected to the moving carrier.
In a possible implementation, the mobile carrier comprises a cylindrical cabin body, an anti-collision plate and a sealing leather cup; each group of probe detection assemblies are sequentially arranged on the outer side of the cylindrical cabin body along the axial lead of the cylindrical cabin body;
in the moving direction of the moving carrier, the front side of each group of probe detection assemblies is provided with a sealing leather cup, the orientation of the sealing end of each sealing leather cup is consistent with that of the elastic detection end of each probe detection assembly, and the sealing leather cups depart from the moving direction of the moving carrier, and the anticollision plate is arranged at the foremost end of the cylindrical cabin body.
In a possible implementation mode, a battery assembly and a recording storage unit are arranged in the cylindrical cabin body, the recording storage unit is respectively connected with each group of probe detection assemblies, and the battery assembly respectively supplies power to the recording storage unit and each group of probe detection assemblies.
Compared with the prior art, the invention has the following beneficial effects:
detection device is through the probe determine module that has the elasticity determine end in the pipeline, every elasticity determine end all can do radial motion through its elasticity, make can remain throughout when detecting with pipeline inner wall looks butt, the state of laminating, and then improve the accuracy of signal quality and detection, and through setting up probe determine module to more than two sets of and every group probe determine module crisscross setting, can make detection device's detection range effectively cover a complete circumference inner wall of pipeline like this, realize 360 and the removal detection at no dead angle, avoided only setting up a set of and because the elasticity determine end need do radial motion and have the unable problem that covers complete circumference pipe wall that the interval leads to.
Moreover, every elasticity test end of detection device all adopts elastic material to make in the pipeline, and the test probe parcel is in elastic material, realizes the sealed of probe and makes it have better water pressure resistance ability to the elasticity test end is through specific angle, can guarantee the good laminating of probe and pipe wall, and provides sufficient holding power, prevents the shake of test probe when detecting, and is more stable.
Meanwhile, the detection device in the pipeline integrates the storage recording unit, the battery pack and the like into the cylindrical cabin body, so that the whole structural design is more compact, the appearance is smaller, the pipeline elbow with small curvature is easy to pass through, the mileage detection can be carried out, the normal operation can be carried out under the high-pressure environment, and the water inlet short circuit cannot occur.
Drawings
Fig. 1 is a schematic perspective view of an in-pipeline detection device according to an embodiment of the present disclosure;
FIG. 2 is a schematic front view of an in-pipe inspection device according to an embodiment of the present disclosure, the front view also showing the projection or perspective of two sets of probe inspection assemblies onto a seal cup;
FIG. 3 is a schematic diagram of the detecting components of an embodiment of the probe detecting assembly of the in-pipe detecting device according to the present application;
FIG. 4 is a side view of the sensing member of FIG. 3, further illustrating the angle at which the resilient sensing tip is disposed;
FIG. 5 is a schematic perspective cross-sectional view of the sensing member of FIG. 3;
FIG. 6 is a schematic perspective view illustrating another exemplary structure of a probe detection assembly of an in-pipe detection apparatus according to an embodiment of the present disclosure;
FIG. 7 is a schematic cross-sectional view of the probe inspection assembly of FIG. 6;
FIG. 8 is a schematic structural diagram of an in-pipeline inspection device incorporating the probe inspection assembly of FIG. 6 according to an embodiment of the present disclosure;
fig. 9 is a schematic cross-sectional view of an in-pipe inspection device according to an embodiment of the present application, which shows the internal structure of the device when the probe inspection assembly shown in fig. 3 is installed.
In the figure: 1-moving a carrier; 11-a cylindrical cabin; 12-a battery assembly; 13-a recording storage unit; 2-probe detection assembly; 21-a first support; 211-a connection end; 212-a transition connection section; 213-elastic detection end; 214-a detection probe; 22-a second support; 221-annular connecting portion; 222-a transition joint; 223-a support; 3-mileage detecting means; 31-mileage wheel; 32-an encoder; 33-wheel support; 4-a crash-proof plate; 5-sealing the leather cup; 6-withstand voltage connecting wire; 7-pressure-resistant connector; 8-bolt; 9-spacer ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The invention is further described with reference to the following figures and specific embodiments.
Referring to fig. 1, an embodiment of the present application provides an in-pipe detection apparatus, which may include: the detection device comprises a movable carrier 1 and at least two groups of probe detection assemblies 2, wherein the probe detection assemblies 2 detect the inner wall of a pipe by the movement of the movable carrier 1 in the pipe, and the detection content can be determined according to detection heads with different detection functions which are carried according to actual needs; it should be noted that the in-pipeline detection device can detect general pipelines, including oil and gas pipelines, water transportation pipelines, cable pipelines, etc., and can also detect some other applicable special pipelines, without limitation.
In the embodiment of the present application, the moving carrier 1 which moves with the fluid in the pipe or moves by the traveling mechanism in the pipe, and the axis of the moving carrier 1 is parallel to the axis of the pipe when moving; it can be understood that the moving carrier 1 can move in the pipeline through the action of the fluid, the action is the pushing action generated by the pressure difference acting on the front side and the back side of the moving carrier 1 when the fluid flows, and the moving mechanism can also realize the moving in the pipeline, the moving mechanism specifically comprises a driving mechanism arranged in the moving carrier 1 and a traveling wheel arranged outside the moving carrier 1, the traveling wheel is driven by the driving mechanism to rotate, specifically, the traveling wheels are respectively arranged at the two ends of the moving carrier, the probe detection assembly can be arranged on the moving carrier between the traveling wheels, the traveling mechanism can be externally arranged or arranged in the moving carrier, and the traveling mechanism can adopt the prior art; and
the probe detection assemblies 2 are provided with at least two groups, and each group of probe detection components are sequentially arranged on the outer side of the movable carrier 1 along the axial lead of the movable carrier 1; the probe detection assembly 2 comprises a plurality of detection parts which are arranged around the axis of the moving carrier 1, each detection part is provided with an elastic detection end 213 made of elastic material, a detection probe 214 is arranged in each elastic detection end 213, and the elastic movement direction of each elastic detection end 213 is radial, so that each elastic detection end 213 can be abutted against the inner wall of the pipeline during detection;
each detection part of the probe detection assembly 2 detects the inner wall of the pipeline through the elastic detection end 213 thereof, the elastic detection end 213 which is made of elastic material and is provided with a detection probe 214 is provided with a radial elastic movement direction, so that the elastic detection end can be abutted against the inner wall of the pipeline during detection, the elastic detection end can be effectively contacted with the inner wall of the pipeline through the elasticity thereof during movement detection, and more stable supporting force is provided, thereby improving the signal quality and the detection accuracy, and realizing the sealing of the probe and enabling the probe to have better water pressure resistance;
it should be understood that the "contact" of the elastic detecting end 213 with the inner wall of the pipe, which includes a surface contact and a line contact, may be determined according to the detection mode or the detection object of the detection probe 214 mounted thereon.
In a specific implementation, the detection probe 214 may be a leakage flux detection probe, or a probe with different functions or detection modes.
Referring to fig. 1 and fig. 2, in the embodiment of the present application, each group of probe detecting assemblies is staggered in the axial line direction of the moving carrier 1, so that the total detecting range of the elastic detecting end of the probe detecting assembly arranged on the moving carrier covers the circumferential pipe wall of the pipeline.
Because the inner wall of the pipeline is detected by the elastic detection head made of elastic material, the elastic detection head has elasticity and can move radially, thus, the interval exists between the adjacent elastic detection ends 213 of a group of probe detection components 2 in a natural state or when the stress is small, and the whole circumference cannot be covered integrally, namely, the total detection range of the elastic detection probe 214 cannot completely cover the circumferential pipe wall of the pipeline, at least two groups of probe detection components 2 are arranged, each group of probe detection components are sequentially arranged at the outer side of the movable carrier 1 along the axial lead of the movable carrier 1, and in the axial lead direction of the movable carrier 1, each group of probe detection components are arranged in a staggered manner, namely, the elastic detection ends of each group of probe detection components are staggered on the axial lead of the movable carrier, so that the total detection range of each elastic detection end 213 covers the circumferential direction of the pipeline through the matching of the two groups of probe detection components The pipe wall, thereby realize 360 and the detection at no dead angle of geminate transistors inner wall, detect more comprehensively and effectively.
The staggered arrangement of more than two groups of probe detection assemblies is mainly to enable the detection range of each elastic detection end 213 to cover the whole circumference and have a certain repetition width; for example, in the case of surface contact, the contact surface of the contact is W in width, n in number of elastic detection ends 213, and D in inner diameter of the pipe1Then, the relationship:
in calculating N1And then, taking the even number and integer upwards to obtain the number n of the probes to be set, wherein the number of the probes arranged at the front end and the rear end is n/2.
Thus, the entire circumference can be covered by two sets of probe inspection units 2, and when three or more sets of N are provided, the above relationship is required, that is, N is calculated1And then, taking an even integer upwards to obtain the number N of the probes to be set, wherein the number of the probes arranged in each group at the front and the back is N/N and the probes are staggered with each other.
In some different embodiments, the elastic material used for the elastic detection component is made of rubber material or polyurethane material with high elasticity and toughness, wherein, as a preferable implementation, the elastic material is rubber material.
Referring to fig. 3 and 4, in the embodiment of the present application, each side of the elastic detection end 213 abutting against the inner wall of the pipe has a detection contact surface; when the elastic detection end 213 abuts against the inner wall of the pipeline, the detection contact surface is attached to the inner wall of the pipeline. The elastic detection end 213 is abutted and attached to the inner wall of the pipeline through the detection contact surface when in detection, and the size of the detection contact surface is basically consistent with the detection range of the detection probe 214, so that the detection can be better carried out; the fitting can be understood as that the detection contact surface is matched with the shape of the inner wall of the pipeline, namely can be matched with the inner wall of the pipeline after fitting.
It can be understood that, as shown in fig. 4, since the elastic detection end 213 has elasticity and needs to meet the requirement that the detection contact surface is attached to the pipe wall during detection, that is, when the elastic detection end 213 is in a natural state or an unstressed state, the detection contact surface or the elastic detection end 213 is not parallel to the axial line of the mobile carrier 1 and has a certain included angle α, and the included angle is preferably within a range of 3 ° to 7 °, and the specific angle setting can be determined according to the adopted elastic material, for example, when a rubber material is adopted, the included angle is 5 °, so that the diameter of the detection end of the probe detection assembly 2 before detection is changed from a state larger than the diameter of the inner wall of the pipe to a state substantially equal to the diameter of the inner wall of the pipe during detection and is attached to the pipe.
Referring to fig. 1-5, in an implementation structure of a probe detection assembly 2 of an in-pipeline detection apparatus according to an embodiment of the present application, the probe detection assembly 2 includes a plurality of detection parts disposed around an axis of a movable carrier 1, each detection part includes a first supporting member 21 made of an elastic material, and two ends of the first supporting member 21 are respectively configured as a connection end 211 and an elastic detection end 213; the first supporting piece 21 is arranged on the movable carrier 1 through the connecting end 211, and a detection probe 214 is arranged in the elastic detection end 213; the elastic detection end 213 can move radially relative to the center of the pipe around the connection end 211 under the elastic action thereof.
Thus, the first supporting member 21 is mounted on the movable carrier 1 through the connecting end 211, and forms a free end with respect to the connecting end 211 through the elastic detecting end 213 at the other end, and the free end can move radially with respect to the center of the pipeline around the connecting end 211 under the elastic action when being squeezed by the pipeline wall during detection, so as to ensure good fitting between the probe and the pipeline wall, provide sufficient supporting force, prevent the detecting probe 214 from shaking during detection, and be more stable.
Specifically, as shown in fig. 3, a connecting hole and a positioning hole are formed in the connecting end 211, the positioning hole is used for positioning the connecting hole on the movable carrier 1, and the connecting hole is fixed on the movable carrier 1 through a connecting structure such as a fastener after the positioning hole is positioned; of course, other existing mounting structures may be used and are not intended to be limiting.
As shown in fig. 2 to 4, in order to better construct a structure that the first supporting member 21 can be attached to the inner wall of the pipeline after being extruded, a transition connection section 212 is further disposed between the connection end 211 and the elastic detection end 213 of the first supporting member 21, and the connection end 211 is vertically connected to the mobile carrier 1. The transition segment 212 may function as a transition connection, thereby allowing the resilient sensing end 213 to conform to the inner wall of the pipe through a small degree of resilient deformation, such as within 5.
In some specific embodiments, as shown in fig. 4, the first supporting member 21 is integrally molded by using a mold, and the carried detection probe 214 is encapsulated inside the first supporting member, and the detection probe 214 is a nondestructive detection probe. And, make
Wherein, R1 is the outer diameter of the probe detection assembly 2 when the elastic detection end 213 is jointed with the inner wall of the pipe, D1 is the inner diameter of the pipe, and under the condition that the installation position of the probe is determined, the probe detection assembly 2 is compressed and deformed on the inner wall of the pipe, so that the alpha angle is close to 0 degree, and the jointing effect of the probe and the pipe wall can be ensured.
Referring to fig. 6 to 8, in another implementation structure of the probe detection assembly 2 of the in-pipe detection apparatus according to the embodiment of the present disclosure, the probe detection assembly 2 includes a second supporting member 22 integrally made of an elastic material, the second supporting member 22 has a ring-shaped connecting portion 221 and a plurality of supporting portions 223 spaced apart from the outer periphery of the ring-shaped connecting portion 221, the second supporting member 22 is sleeved outside the movable carrier 1 through the ring-shaped connecting portion 221, each supporting portion 223 is configured as an elastic detection end 213, and a detection probe 214 is disposed in the elastic detection end 213.
In this embodiment, each detection part corresponds to the support part 223 of the second support 22, and detection is performed by using each support part 223 as the elastic detection end 213; in this way, each detection component can be formed as an integral structure and fixed on the movable carrier 1 through the annular connecting portion 221, which is more convenient for the integral installation of the detection components and the installation.
Referring to fig. 7, in one embodiment, a transition connection portion 222 is further disposed between the support portion 223 and the annular connection portion 221, and the annular connection portion 221 is vertically connected to the moving carrier 1. The transition connection section 212 may function as a transition connection, thereby allowing the detection end to be attached to the inner wall of the pipe by elastic deformation at a small angle, e.g., within 5 °.
Specifically, referring to fig. 7, the integrated probe detecting assembly 2 is arranged in a group in front of and behind each other, and has a certain angle difference in the circumferential direction, so that the detecting probe 214 can realize full circumferential coverage, for example: one set of integrated probe detection assembly 2 has N support portions 223 uniformly distributed along the circumference, and the angle difference of the front and rear sets of probe detection assembly 2 is
Design the angle so that
Wherein D1Is the inner diameter of the pipe, R1The radius R of the outer edge of the end of the elastic detection end 213 of the probe detection assembly 22For the probe detection assembly 2Radius, R, of the outer edge of the end of the transition section 2122Ratio R1Slightly larger, so that the elastic detection end 213 is substantially flush with the inner wall of the tube after being pressed by the inner wall in the tube wall.
Referring to fig. 9, the in-duct detection apparatus according to the embodiment of the present application further includes a mileage detecting unit 3 connected to the moving carrier. The mileage detecting part 3 is used for acquiring mileage data, and it can be understood that the mileage detecting part can acquire mileage data by analyzing a magnetic leakage signal of the probe detecting assembly, and can also be realized by installing a mileage wheel 31 on the movable carrier 1 through a wheel bracket 33 and contacting with a pipe wall and arranging an encoder 32 with an inductor on the mileage wheel 31, so that mileage data can be acquired according to the number of rotation turns of the mileage wheel 31, and mileage data which can be acquired during movement detection can be realized.
Referring to fig. 9, in an in-pipeline inspection apparatus according to an embodiment of the present disclosure, a mobile carrier 1 may include a cylindrical cabin 11, an anti-collision plate 4, and a sealing cup 5; each group of probe detection assemblies is sequentially arranged on the outer side of the cylindrical cabin body 11 along the axial lead of the cylindrical cabin body 11; wherein, its appearance of cylindric cabin body 11 is the tubular structure to it holds the cavity to be equipped with in its inside, so that install relevant electronic component, so that overall structure sets up more compactly, rationally.
Referring to fig. 1, 8 and 9, in the moving direction of the moving carrier 1, a sealing cup 5 is disposed at the front side of each group of probe detecting assemblies 2, the sealing end direction of the sealing cup 5 is the same as the direction of the elastic detecting end 213 of the probe detecting assembly 2 and deviates from the moving direction of the moving carrier 1, and the anti-collision plate 4 is disposed at the foremost end of the cylindrical cabin 11. The sealing leather cup 5 is similar to a bowl in structure and can play a role in pushing the cylindrical cabin body 11 to move; the outer diameter of the sealing leather cup 5 is generally 3-6% larger than the inner diameter of the pipeline, and a certain interference magnitude is formed; each group of probe detection assemblies 2 is provided with one sealing leather cup 5, and the two sealing leather cups 5 can prevent the risk that the equipment cannot advance due to air leakage after one of the sealing leather cups is deformed; the anti-collision plate 4 is made of rubber material and is installed at the foremost end of the cylindrical cabin body 11 to prevent the equipment from colliding at the elbow to damage the cylindrical cabin body due to high speed.
Referring to fig. 1 and 9, in some specific embodiments, the anti-collision plate 4, the sealing cup 5, and the probe detection assembly 2 are a group and are sequentially fastened and mounted at the front end of the cylindrical cabin 11 through a flange and a bolt 8, the other group of probe detection assemblies 2 is mounted at the rear end of the cylindrical cabin, the sealing cup 5 configured with the group of probe detection assemblies 2 is disposed at the front side of the probe detection assemblies 2, and is also fastened and mounted on the cylindrical cabin 11 through a flange and a bolt 8; of course, in order to provide a certain movement space for the probe detection assembly 2 at the rear side of the sealing cup 5, a spacer ring 9 is provided between the probe detection assembly 2 and the adjacent sealing cup 5.
In some other embodiments, a battery assembly 12 and a recording storage unit 13 are disposed in the cylindrical cabin 11, the recording storage unit 13 is connected to each group of probe detection assemblies 2, and the battery assembly 12 supplies power to the recording storage unit 13 and each group of probe detection assemblies 2. The record storage unit 13 is also connected with the encoders of each set of mileage detecting parts 3, and the battery pack 12 also supplies power to each encoder; by providing these electronic components in the cylindrical bin 11, the problem that the passage performance is affected by an excessively long overall length can be further avoided.
As shown in fig. 9, in order to make the whole pressure resistance and waterproof performance of the device better, the connections between the electrical components in the cylindrical bin body and the detection probe 214 and the encoder are all connected through the pressure-resistant connecting wire 6 with the pressure-resistant connector 7, the communication between the detection probe 214, the encoder and the like and the internal circuit hardware is realized through the pressure-resistant connecting wire 6, and the device can normally work in a high water pressure environment without water entering and short circuit; moreover, the front and rear end caps of the cylindrical cabin 11 are respectively fitted with a sealing ring to realize the integral sealing of the cylinder, so as to protect the internal battery and circuit components.
The detection device in pipeline of this application embodiment has following advantage:
1. the whole packaging effect of the probe assembly is good, and the sealing performance of the probe can be ensured under the high-pressure environment (3-20Mpa) in the pipeline;
2. the probe assembly has high resilience, the joint effect of the probe and the pipe wall is good, and fatigue fracture is avoided;
3. the probe assembly is molded by a mold, the probe is accurately positioned in the probe, and the manufacturing consistency of the probe is good;
4. the probe assembly is packaged and finished into a single part without other connecting or supporting parts; parts falling off when the probe assembly runs in the pipeline are reduced;
5. the distance between the probe and the upper surface can be controlled by the die to achieve a proper size, so that the lift-off value of the probe from the surface to be detected meets the optimal requirement, and the probe signal can be optimized;
6. the circuit structure and the detection probe are integrated into a section, so that the overall length is reduced, and the elbow passing performance is improved.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a detection device in pipeline which characterized in that: the method comprises the following steps:
a moving carrier that moves in the pipe with the fluid in the pipe or by a traveling mechanism, and an axis of the moving carrier is parallel to an axis of the pipe when moving; and
the probe detection assemblies are provided with at least two groups, and each group of probe detection components are sequentially arranged on the outer side of the movable carrier along the axial lead of the movable carrier; the probe detection assembly comprises a plurality of detection parts which are arranged in a surrounding way by the axial lead of the movable carrier, each detection part is provided with an elastic detection end made of elastic materials, a detection probe is arranged in each elastic detection end, and the elastic movement direction of each elastic detection end is radial, so that each elastic detection end can be abutted against the inner wall of the pipeline during detection;
in the axial lead direction of the movable carrier, each group of probe detection assemblies are arranged in a staggered manner, so that the total detection range of the elastic detection ends of the probe detection assemblies arranged on the movable carrier covers the circumferential pipe wall of the pipeline.
2. An in-pipe inspection device according to claim 1, wherein: one side of each elastic detection end, which is abutted against the inner wall of the pipeline, is provided with a detection contact surface;
when the elastic detection end is abutted against the inner wall of the pipeline, the detection contact surface is attached to the inner wall of the pipeline.
3. An in-pipe inspection device according to claim 1, wherein: the detection part comprises a first supporting piece made of elastic material, and two ends of the first supporting piece are respectively configured into a connecting end and an elastic detection end; the first supporting piece is arranged on the movable carrier through the connecting end, and a detection probe is arranged in the elastic detection end; the elastic detection end can move radially relative to the center of the pipeline around the connecting end under the elastic action of the elastic detection end.
4. An in-pipe inspection device according to claim 3, wherein: the first supporting piece is also provided with a transition connecting section between the connecting end and the elastic detection end, and the connecting end is vertically connected with the movable carrier.
5. An in-pipe inspection device according to claim 1, wherein: the probe detection assembly comprises a second support piece integrally made of an elastic material, the second support piece is provided with an annular connecting portion and a plurality of supporting portions distributed on the outer periphery of the annular connecting portion at intervals, the second support piece is sleeved on the outer side of the movable carrier through the annular connecting portion, each supporting portion is configured to be an elastic detection end, and a detection probe is arranged in the elastic detection end.
6. An in-pipe inspection device according to claim 1, wherein: the in-pipeline detection device further comprises a mileage detection part connected to the movable carrier.
7. An in-pipe inspection device according to any one of claims 1 to 6, wherein: the mobile carrier comprises a cylindrical cabin body, an anti-collision plate and a sealing leather cup; each group of probe detection assemblies are sequentially arranged on the outer side of the cylindrical cabin body along the axial lead of the cylindrical cabin body;
in the moving direction of the moving carrier, the front side of each group of probe detection assemblies is provided with a sealing leather cup, the orientation of the sealing end of each sealing leather cup is consistent with that of the elastic detection end of each probe detection assembly, and the sealing leather cups depart from the moving direction of the moving carrier, and the anticollision plate is arranged at the foremost end of the cylindrical cabin body.
8. An in-pipe inspection device according to claim 7, wherein: the cylindrical cabin is internally provided with a battery pack and a recording storage unit, the recording storage unit is respectively connected with each group of probe detection assemblies, and the battery pack supplies power for the recording storage unit and each group of probe detection assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932993.6A CN113671021A (en) | 2021-08-13 | 2021-08-13 | Detection device in pipeline |
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| CN202110932993.6A CN113671021A (en) | 2021-08-13 | 2021-08-13 | Detection device in pipeline |
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| CN113671021A true CN113671021A (en) | 2021-11-19 |
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| CN202110932993.6A Pending CN113671021A (en) | 2021-08-13 | 2021-08-13 | Detection device in pipeline |
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| CN116608361A (en) * | 2023-07-20 | 2023-08-18 | 沈阳仪表科学研究院有限公司 | Pipeline detection assembly, pipeline detection unit and pipeline magnetic flux leakage detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116608361A (en) * | 2023-07-20 | 2023-08-18 | 沈阳仪表科学研究院有限公司 | Pipeline detection assembly, pipeline detection unit and pipeline magnetic flux leakage detector |
| CN116608361B (en) * | 2023-07-20 | 2023-09-19 | 沈阳仪表科学研究院有限公司 | Pipeline detection assembly, pipeline detection unit and pipeline magnetic flux leakage detector |
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