CN108413919A - Pipeline drift diameter detection device - Google Patents
Pipeline drift diameter detection device Download PDFInfo
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- CN108413919A CN108413919A CN201810087937.5A CN201810087937A CN108413919A CN 108413919 A CN108413919 A CN 108413919A CN 201810087937 A CN201810087937 A CN 201810087937A CN 108413919 A CN108413919 A CN 108413919A
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- leather cup
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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Abstract
The present invention discloses a kind of pipeline drift diameter detection device, including：Skeleton；The leather cup structure being set on the skeleton, the leather cup structure can be bonded with inner wall of the pipe；The detection components being fixedly installed on the skeleton；The detection components can generate detection deformation when contacting the deformation of the inner wall of the pipe and generate corresponding deformation signal.Pipeline drift diameter detection device provided by the present invention disclosure satisfy that the Structural Design Requirement of miniaturization, simplification, and then improve the applicability and reliability of drift diameter detector.
Description
Technical field
The present invention relates to pipeline inspection technology field more particularly to a kind of pipeline drift diameter detection devices.
Background technology
Pipeline transports most economical, most reasonable, most important means of transportation as current oil, natural gas and finished product, has
Continuously, fast, many merits such as conveying capacity is big, facilitates, have become the big transport of five parallel with railway, highway, aviation, water transport
One of means.In recent years, the fast development with the steady-state growth of world economy and countries in the world to energy demand, whole world oil
The pace of construction of feed channel is being accelerated, and construction scale and construction level all have significant improvement, at the same time, pipeline peace
Full sex chromosome mosaicism is also increasingly valued by people.On the one hand, for creating pipeline, not due to the out-of-flatness of landforms, construction
The reasons such as specification, the defects of inevitably will produce pipe deforming so that the passability of pipeline cleaner equipment reduces, to
Cause the accidents such as blocking.On the other hand, it for pipeline of having gone into operation, is highlighted with the passage Aging Problem of usage time,
A large amount of pipelines have been approached or have been more than its projected life.Further, since pipe deforming defect caused by burn into earth's crust migration etc. is all
It is to cause pipeline accident that can cause pipeline failure, direct result, can not only bring huge economic loss, but will cause environment
Destruction and personnel injures and deaths.Therefore for in-service pipeline, the carry out pipe detection in period is needed, is to detect pipeline with this
No there are security risks, find defect of pipeline to avoid personnel, economic loss and the environment because pipeline failure is brought in time
It destroys.
Currently, the assessment detection method of common pipe safety situation have line walking observation, impingement, thermal infrared at
As method, aurora detection method, gas imaging method, ultrasonic guided wave detecting method, sonic method and Inner Examination Technology on Pipeline etc..Wherein, preceding
Several method is mainly adapted to pipeline leakage testing, and for the more demanding of detection environment, pipeline, pumped (conveying) medium etc., therefore
It is not high to detect fitness.Oil-gas pipeline inner detection technique efficiently solves the limitation of aforesaid way, compares and traditional
Non-destructive testing technology, high-precision drift diameter detector have many advantages, such as that passability height, good economy performance, accuracy of detection are high, tie simultaneously
The actual state of Chinese Petroliferous pipeline is closed, drift diameter detector has wide application market.
Drift diameter detector is usually made of skeleton, detection sensor, detection arm, leather cup, mileage wheel and anticollision first class sections.
On the one hand skeleton is used as carrier, for installing the various parts on fixed detector；On the other hand it is sealing cabin inside it,
The fallible components such as circuit board, battery can be placed.Arm, retaining spring and detection sensor composition deformation detection part are detected, altogether
With the detection completed to pipe deforming amount.The outer diameter of leather cup is more bigger than the internal diameter of pipeline, can completely cut off before and after drift diameter detector
Fluid establishes pressure difference, to provide the power of advance for detector.Mileage wheel can measure the operation of drift diameter detector immediately
Distance can also be used to the specific location that record pipeline deforms.It is anti-to ram and be made of rubber elastomeric material, it is latus rectum
Detector provides buffer protection, prevents it from being damaged because of severe impact.The detection arm of contact drift diameter detector is directly and pipeline
The displacement for detecting arm is transformed into the variation of pipeline inner radial, to judge the defect of pipeline by interior contact.
Contact drift diameter detector is compared to contactless drift diameter detector, and configuration aspects are relatively easy, passability is good,
Flaw indication feature is apparent, Data Post is simple, of low cost, performance safety is reliable.In addition, with high-precision, small size
The appearance of angular encoder, the accuracy of detection of high-precision drift diameter detector can reach the level of contact drift diameter detector.Cause
This, contact drift diameter detector worldwide still has wide application market.It can be with according to the structure difference of detection arm
It is classified as wheeled drift diameter detector, rod-type drift diameter detector and probe-type drift diameter detector.
Wherein, the detection arm of rod-type drift diameter detector is generally rod-shaped, and installation dimension is smaller, and accuracy of detection is relatively
It is high.Originally, the detection arm end of rod-type drift diameter detector is directly contacted with inner wall of the pipe, is not only easy to damage inner wall of the pipe, more
Frictionally damage can be generated to detection arm itself, this kind of detection arm can generally carry out its end polishing smooth processing.Currently, this is logical
Diameter detector is in direct contact using rod-type detection arm with inner wall of the pipe, using Hall effect, by acquiring rod piece in piping
Pivoting angle data when defect calculates the variation of internal diameter of the pipeline, to judge defect in pipeline.Since detection arm is certain
Preload force effect under be in contact with pipeline, when streaking tube wall with certain speed, frictionally damage can be caused to tube wall, is examined simultaneously
Test arm end can be also damaged, and be exerted a certain influence to accuracy of detection.It is influenced by Hall element size, the detector is total
Body size is bigger than normal, can only measure big-diameter pipeline.
The detection arm end of probe-type drift diameter detector is acicular texture, due to detecting arm sectional dimension smaller,
Under the premise of angular encoder structure size and precision are certain, more probe in detecting arms can be arranged in circumferential direction, therefore
It is compared to wheeled and rod-type drift diameter detector, probe-type drift diameter detector has higher accuracy of detection, pipeline may be implemented
The detection of Internal Small-scale defect.Currently, probe-type detects, arm size is smaller compared with rod-type detection arm, and detection arm is more,
Accuracy of detection is improved to a certain extent, but since its quantity is various, install that structure is increasingly complex, to the precision of part
It is required that higher, testing principle is also based on Hall effect, using the rotation angle of rotary encoder detection probe, in encoder
Under the premise of structure is certain, circumferentially one enclosed in skeleton, therefore its overall dimension is influenced by encoder, cannot be reached smaller
The size requirement of caliber.
In conclusion the testing agency of common drift diameter detector is relative complex at present, size is larger, it is difficult to it is small to meet some
Such as defects detection of the oilfield internal pipe network or airport pipeline requirement of type pipeline, and it is complicated, easily because of the shake in operational process
Dynamic to lead to testing agency's failure, stability is poor, and accuracy of detection is caused to reduce.Therefore, there is an urgent need for develop a kind of novel detection
Mechanism, the Structural Design Requirement for meeting miniaturization, simplifying, improves the applicability and reliability of drift diameter detector.
Invention content
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of pipeline drift diameter detection devices, disclosure satisfy that
Miniaturization, the Structural Design Requirement simplified, and then improve the applicability and reliability of drift diameter detector.
The technical solution adopted by the present invention is as follows：
A kind of pipeline drift diameter detection device, including：
Skeleton；
The leather cup structure being set on the skeleton, the leather cup structure can be bonded with inner wall of the pipe；
The detection components being fixedly installed on the skeleton；The detection components can be in the shape for contacting the inner wall of the pipe
Detection deformation is generated when change and generates corresponding deformation signal.
As a preferred embodiment, the detection components include along the circumferentially disposed multiple detection arms of the skeleton
And it is set to the distortion measurement element on the detection arm；The detection arm has the connecting pin being fixedly connected with the skeleton
And the end that can be bonded with inner wall of the pipe；The detection arm can generate detection shape when contacting the deformation of the inner wall of the pipe
Become；The distortion measurement element can generate the deformation signal according to the detection deformation of the detection arm.
As a preferred embodiment, the detection arm is spring steel material；The distortion measurement element is strain
Piece；Each detection arm is equipped with one or more foil gauges.
As a preferred embodiment, the circumferential width of the detection arm is adapted with the width of the foil gauge.
As a preferred embodiment, one end of the skeleton is equipped with the leather cup structure, the other end is equipped with stroke
Measuring mechanism.
As a preferred embodiment, the stroke measurment mechanism includes mileage wheel, linking arm, elastic parts；Institute
It includes the spring for connecting the supporting rod of the skeleton end and being sheathed on the supporting rod to state elastic parts；The connection
One end of arm is pivotally connected to below the spring on the supporting rod, and the other end installs the mileage wheel；The spring pair
The linking arm applies the active force expanded outwardly.
As a preferred embodiment, it is described detection arm end relative to its connecting pin close to the stroke measurment
Mechanism；The distortion measurement element is set on the inner surface of the detection arm.
As a preferred embodiment, along the length direction of the skeleton, the skeleton is equipped with multiple inspections
Survey component.
As a preferred embodiment, in the detection components, between two adjacent detection arms circumferentially
Interval gap and at least one detection arm in another detection components it is opposite along the length direction of the skeleton.
As a preferred embodiment, the skeleton includes shell and the first chamber in the shell
And second chamber；The first chamber accommodates power supply；The second chamber accommodates processing component；The power supply and the place
Reason component is connected, and the processing component is connected with the distortion measurement element；The processing component can receive the shape
Varying signal simultaneously stores the deformation data in deformation signal.
As a preferred embodiment, one end of the shell is equipped with a leather cup structure and a detection
Component, the other end are equipped with the stroke measurment mechanism and the detection components；It is additionally provided between two detection components
The one leather cup structure.
As a preferred embodiment, the leather cup structure includes multiple skins stacked along the backbone length direction
Bowl piece；The leather cup piece circumferentially has multiple leather cup valves；Gap edge between the one two neighboring leather cup valve of leather cup on piece
The length direction of the skeleton is opposite at least one leather cup valve of another leather cup on piece.
Advantageous effect：
The detection components of pipeline drift diameter detection device provided by the present invention are fixed on skeleton, are being connect by detection components
Detection deformation is generated when touching the deformation of the inner wall of the pipe and generates corresponding deformation signal carries out pipeline drift diameter detection, structure letter
It is single, it is not necessary that the large volume of detecting element such as Hall element is arranged, so as to have smaller size, so disclosure satisfy that small
Type, simplification Structural Design Requirement, can be applied in the latus rectum detection of small pipeline, and then improve drift diameter detector
Applicability and reliability.
With reference to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms that profit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It is used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those skilled in the art without having to pay creative labor, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of pipeline drift diameter structure of the detecting device schematic diagram that embodiment of the present invention is provided.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work, should all belong to guarantor of the present invention
The range of shield.
It should be noted that when element is referred to as " being set to " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
Any and all combinations of relevant Listed Items.
Referring to Fig. 1, a kind of pipeline drift diameter structure of the detecting device schematic diagram provided by embodiment of the present invention.The pipe
Road latus rectum detection device includes：Skeleton；The leather cup structure 1 being set on the skeleton, 1 energy of the leather cup structure and inner wall of the pipe
Fitting；The detection components 2 being fixedly installed on the skeleton；The detection components 2 can be in the shape for contacting the inner wall of the pipe
Detection deformation is generated when change and generates corresponding deformation signal.
When being applied to carry out latus rectum detection in pipe-line by the pipeline drift diameter detection device, leather cup structure 1 is set
In the front of detection components 2.The maximum outside diameter of leather cup structure 1 is slightly larger than the internal diameter in channel, to which leather cup structure 1 can be in pipeline
Before and after interior supports entire pipeline drift diameter detection device, and the discharge pressure of oil gas is kept under acting in pipeline in pipeline
Pressure difference, and then entire pipeline drift diameter detection device is pushed to advance.It outwardly protrudes, concave when being formed on the wall for run to pipeline
When sunken or other shapes deformation, pipeline drift diameter detection device generates corresponding detection deformation and corresponding deformation signal, root
The mechanical quantity of pipeline drift diameter variation can be obtained according to the deformation signal.
The detection components 2 for the pipeline drift diameter detection device that present embodiment is provided are fixed on skeleton, pass through detection group
Part 2, which generates detection deformation when contacting the deformation of the inner wall of the pipe and generates corresponding deformation signal, carries out pipeline drift diameter inspection
It surveys, it is simple in structure, it is not necessary that the large volume of detecting element such as Hall element is arranged, so as to have smaller size, so
The Structural Design Requirement that disclosure satisfy that miniaturization, simplification can be applied in the latus rectum detection of small pipeline, and then improve logical
The applicability and reliability of diameter detector.
In the present embodiment, skeleton is that the leather cup structure 1 and the detection components 2 form support.The skeleton
Length direction is the extending direction of pipeline, and leather cup structure 1 and detection components 2 are installed on skeleton successively according to tandem
On.Moving and being put into pipeline for convenience of detection components 2, leather cup structure 1 can be set to the front end of skeleton, to put
First leather cup structure 1 is put into pipeline when setting the pipeline drift diameter detection device.To protect leather cup structure 1, the front end of leather cup structure 1
Anti- ram can also be set.
Further, the stroke of pipeline drift diameter detection device in the duct is detected for convenience, and one end of the skeleton is set
There are the leather cup structure 1, the other end to be equipped with stroke measurment mechanism.According to the direction of travel of pipeline drift diameter detection device, leather cup knot
Structure 1 is installed on the front end of skeleton, then stroke measurment mechanism is installed on the rear end of skeleton.This can be measured by stroke measurment mechanism
The mileage that pipeline drift diameter detection device is walked in pipeline.
Specifically, the stroke measurment mechanism includes mileage wheel 7, linking arm 9, elastic parts 8.To ensure in pipeline drift diameter
In detection device operational process, mileage wheel 7 is close to keep it that can only occur to roll without cunning on the inside of tube wall under the preload of spring
Dynamic, the elastic parts 8 includes the spring for connecting the supporting rod of the skeleton end and being sheathed on the supporting rod；Institute
The one end for stating linking arm 9 is pivotally connected to below the spring on the supporting rod, and the other end installs the mileage wheel 7；Institute
It states spring and the active force expanded outwardly is applied to the linking arm 9.
Wherein, mileage wheel 7 and linking arm 9 (are not put into pipe in the initial state under the spring effect of elastic parts 8
In road) it is expanding to maximum outward.At this point, the maximum outside diameter (summary) of mileage wheel 7 in the initial state is more than the internal diameter of pipeline, to
When being put into pipeline, mileage wheel 7 is needed to contract to adapt to the internal diameter of pipeline, is applied to linking arm 9 by spring contraction
Active force increase, ensure that mileage wheel 7 is close to the inner wall of pipeline, so that mileage wheel 7 can be in the pipeline drift diameter detection device
Rotation is kept during advancing, and obtains accurate traveling mileage measurement as a result, and can exist by the record detector of mileage wheel 7
The position run in pipeline to defect in pipeline to be accurately positioned.
It is supported to ensure that the pipeline drift diameter detection device is front and back in the duct without forming lateral deviation, skeleton is along its length
Multiple leather cup structures 1,5 can be equipped with, multiple leather cup structures 1,5 can be by skeletal support in coaxial with normal pipeline, in oil gas
Under discharge pressure effect, front and back multiple leather cup structures 1,5 can guarantee the concentricity of skeleton and pipeline, to ensure the pipeline drift diameter
Trouble-free operation of the detection device in pipeline.Specifically, as shown in Figure 1, one end of the shell is equipped with a leather cup structure 1
And detection components 2, the other end are equipped with the stroke measurment mechanism and the detection components 6；Two inspections
It is additionally provided with a leather cup structure 5 between survey component 2,6.
It continues from the preceding paragraph description, leather cup structure 1 in the duct supports the pipeline drift diameter detection device, and by leather cup knot
The sealing of 1 front and rear sides of structure separates to form front and back pressure difference so that the pipeline drift diameter detection device can be made in oil-gas transportation pressure
With lower advance.To position the pipeline drift diameter detection device, the front of leather cup structure 1 can be equipped with position signal transmitter, this is fixed
The ground marking system that position signal transmitter can be constituted with ground marker provides ground relative position reference and then improves and determines
Position precision.
It is passed through for convenience of the leather cup structure 1 when encountering pipeline deformation, the leather cup structure 1 includes multiple along institute
State the leather cup piece that backbone length direction stacks；The leather cup piece circumferentially has multiple leather cup valves；The one leather cup on piece is adjacent
Gap between two leather cup valves is opposite at least one leather cup valve of another leather cup on piece along the length direction of the skeleton.Into one
Step ground, the width of the leather cup valve circumferentially are more than the width in the gap.
When leather cup structure 1 with the structure is hampered in pipeline, each leather cup valve of leather cup structure 1 is due to its circumferential direction two
Side is to be not connected to state, to which single leather cup valve can form swing when being hampered, to adapt to the variation of inner wall of the pipe, is passed through
Position with obstacle；Meanwhile the leather cup structure 1 is lamination, the leather cup piece mutually stacked will be respectively adjacent to leather cup on piece
Gap cover and block, ensure the sealing performance of leather cup structure 1 in the duct.
In the present embodiment, the skeleton includes shell and the first chamber in the shell and the second chamber
Room.The first chamber accommodates power supply.The second chamber accommodates processing component.The power supply and the processing component phase
Connection, the processing component are connected with the distortion measurement element；The processing component can receive the deformation signal simultaneously
Store the deformation data in deformation signal.
Wherein, power supply provides energy to processing component and detection components 2.Processing component can store in deformation signal
Deformation data.Processing component can be chromacoder (such as A/D converter) and data storage.First chamber accommodates
Power supply forms battery compartment 3, and second chamber accommodates processing component and forms electronic component storehouse 4, as shown in Figure 1, battery compartment 3 and electronics
Element storehouse 4 is located between a detection components 2/6 and a leather cup structure 5, and is separated by the leather cup structure 5.
Please continue to refer to Fig. 1, the detection components 2 include along the circumferentially disposed multiple detection arms of the skeleton and setting
Distortion measurement element on the detection arm；The detection arm has the connecting pin that is fixedly connected with the skeleton and can be with
The end of inner wall of the pipe fitting；The detection arm can generate detection deformation when contacting the deformation of the inner wall of the pipe；It is described
Distortion measurement element can generate the deformation signal according to the detection deformation of the detection arm.
In the present embodiment, the connecting pin for detecting arm is fixed on skeleton, fixed form can be weld, be spirally connected, riveting
Connect etc., the application is not restricted.In embodiment as shown in Figure 1, ring flange is fixed on skeleton, the connecting pin for detecting arm is logical
Bolt is crossed to be fixedly connected on ring flange.
Multiple detection arms circumferentially radial circumferential direction for being fixed on skeleton.In the initial state, multiple detection arms are along week
To the side profile for forming a round platform.It the connecting pin of detection arm, can also curvilinear structures to that can be linear structure between end.
Arm is detected under the influence of no external force can be under original shape state always.The detection arm has elasticity, to deform upon
After can restore to original shape.
Specifically, the detection arm is spring steel material, such as 50CrVA spring steel materials.Detection arm is elongate configuration,
It can be specifically shrapnel.Distortion measurement element can convert the detection deformation for detecting arm to voltage change or curent change
The variation of signal can be transmitted Deng other.Further, the distortion measurement element can be foil gauge.The foil gauge can be electricity
Foil gauge is hindered, and the processing component is connected by conducting wire.Complete detection is carried out for convenience of to the deformation for detecting arm entirety, each
The detection arm is equipped with one or more foil gauges.
In view of detection arm detects (bending) deformation of arm when encountering inner wall of the pipe deformation position predominantly to contract
Or the length direction deformation expanded outwardly, length direction arrangement of multiple foil gauges along the detection arm.The foil gauge can paste
In the surface of the detection arm.In the present embodiment, the circumferential width of the detection arm and the width of the foil gauge are mutually fitted
Match.It since the volume structure of foil gauge is smaller, while detecting arm itself size and need to be only bonded for foil gauge, to detect
The overall dimensions of arm with very little, can be applied in the latus rectum detection of small pipeline.
As shown in Figure 1, it is described detection arm end relative to its connecting pin close to the stroke measurment mechanism.In this way,
When pipeline drift diameter detection device is located in channel, multiple detection arms are sent out axially backward along pipeline radially outward and along pipeline
It dissipates.In view of the outer surface (lower surface for detecting arm when scope of readers is to Fig. 1) of detection arm connects in deformation with the inner wall of pipeline
It touches, to avoid damage to distortion measurement element, the distortion measurement element is set on the inner surface of the detection arm.
In view of there is interval gap between multiple detection arms independently of one another, between two neighboring detection arm, in pipeline
Deformation when pipeline drift diameter detection device is passed through in interval interstitial site, it is likely that the case where leading to not detect,
To avoid the situation, along the length direction of the skeleton, the skeleton is equipped with multiple (two or more) described detection group
Part 2.Further, accuracy is detected to be promoted, in the detection components 2, between two adjacent detection arms circumferentially
Interval gap and at least one detection arm in another detection components 6 it is opposite (mutually just along the length direction of the skeleton
It is right).In this way, the interval gap digit in previous detection components 2 when pipeline drift diameter detection device is passed through of deformation in the duct
When setting, it can be encountered and be detected by the detection arm of latter detection components 6, so as to effectively promote the pipeline drift diameter detection device
Accuracy.
The course of work of the pipeline drift diameter detection device provided in present embodiment is described in detail with reference to Fig. 1, with
Just the present invention is more fully understood.
When pipeline drift diameter detection device detects in the duct, have one in the detection arm of normal pipe segment pipe latus rectum detection device
Fixed initial deformation amount, the foil gauge detected on arm correspondingly have certain decrement, and the end (free end) for detecting arm is tight
Inner wall of the pipe is pasted, and certain deformation quantity is kept to be run in pipeline.Leather cup structure 1, which supports entire detector, makes it in pipeline
Pressure difference and the operation of detector is pushed before and after interior holding.
When run to the inner wall deformation position of pipeline such as to the structure of pipe internal projection when, detection arm produces under pressure
Further decrement is given birth to, the internal strain on foil gauge changes, and foil gauge by its strain signal (preferably believe by voltage
Number) it is transferred to the processing component in electronic component storehouse 4.
When by inner wall of the pipe deformation position such as outside sunk structure, the end for detecting arm expands outwardly, and detects arm
Relaxation rebound occurs, foil gauge is pre-tightened by the part become large-sized to be reduced, and internal strain also occurs to change accordingly, strain
The processing component that its strain signal is transferred to electronic component storehouse 4 by piece stores, to take out pipeline drift diameter detection dress
It sets and post-processes the data of storage, defect in pipeline is judged with this.In the process of running, preload of the mileage wheel 7 in spring
Under be close to insides of pipes and keep mileage wheel 7 that can only occur to roll without sliding, record detector by mileage wheel 7 transports in pipeline
Capable position to defect in pipeline to be accurately positioned.
Herein cited any digital value all include between lower limiting value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.The term " substantially by ... constitute " for describing combination should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used for
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined with reference to foregoing description, but should with reference to appended claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part for subject matter.
Claims (12)
1. a kind of pipeline drift diameter detection device, which is characterized in that including：
Skeleton；
The leather cup structure being set on the skeleton, the leather cup structure can be bonded with inner wall of the pipe；
The detection components being fixedly installed on the skeleton；The detection components can be when contacting the deformation of the inner wall of the pipe
It generates detection deformation and generates corresponding deformation signal.
2. pipeline drift diameter detection device as described in claim 1, it is characterised in that：The detection components include along the skeleton
Circumferentially disposed multiple detection arms and the distortion measurement element being set on the detection arm；The detection arm have with it is described
The connecting pin that skeleton is fixedly connected and the end that can be bonded with inner wall of the pipe；The detection arm can contact in the pipeline
Detection deformation is generated when the deformation of wall；The distortion measurement element can generate the shape according to the detection deformation of the detection arm
Varying signal.
3. pipeline drift diameter detection device as claimed in claim 2, it is characterised in that：The detection arm is spring steel material；Institute
It is foil gauge to state distortion measurement element；Each detection arm is equipped with one or more foil gauges.
4. pipeline drift diameter detection device as claimed in claim 3, it is characterised in that：It is described detection arm circumferential width with it is described
The width of foil gauge is adapted.
5. the pipeline drift diameter detection device as described in claim 1-4 is any, it is characterised in that：One end of the skeleton is equipped with institute
Leather cup structure is stated, the other end is equipped with stroke measurment mechanism.
6. pipeline drift diameter detection device as claimed in claim 5, it is characterised in that：The stroke measurment mechanism includes mileage
Wheel, linking arm, elastic parts；The elastic parts includes connecting the supporting rod of the skeleton end and being sheathed on the branch
Spring on strut；One end of the linking arm is pivotally connected to below the spring on the supporting rod, other end installation
The mileage wheel；The spring applies the active force expanded outwardly to the linking arm.
7. pipeline drift diameter detection device as claimed in claim 5, it is characterised in that：The end of the detection arm connects relative to it
End is connect close to the stroke measurment mechanism；The distortion measurement element is set on the inner surface of the detection arm.
8. pipeline drift diameter detection device as claimed in claim 2, it is characterised in that：It is described along the length direction of the skeleton
Skeleton is equipped with multiple detection components.
9. pipeline drift diameter detection device as claimed in claim 8, it is characterised in that：In one detection components, two adjacent
Interval gap between the detection arm circumferentially is at least one detection arm in another detection components along the skeleton
Length direction it is opposite.
10. pipeline drift diameter detection device as claimed in claim 5, it is characterised in that：The skeleton includes shell and is located at
First chamber in the shell and second chamber；The first chamber accommodates power supply；The second chamber accommodates processing
Component；The power supply is connected with the processing component, and the processing component is connected with the distortion measurement element；The place
Reason component can receive the deformation signal and store the deformation data in deformation signal.
11. pipeline drift diameter detection device as claimed in claim 10, it is characterised in that：One end of the shell is equipped with described in one
Leather cup structure and the detection components, the other end are equipped with the stroke measurment mechanism and the detection components；Two
A leather cup structure is additionally provided between the detection components.
12. pipeline drift diameter detection device as claimed in claim 1 or 2, it is characterised in that：The leather cup structure includes multiple edges
The leather cup piece that the backbone length direction stacks；The leather cup piece circumferentially has multiple leather cup valves；The one leather cup on piece phase
Gap between adjacent two leather cup valves is opposite at least one leather cup valve of another leather cup on piece along the length direction of the skeleton.
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| CN201810087937.5A CN108413919B (en) | 2018-01-30 | 2018-01-30 | Pipeline drift diameter detection device |
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| CN201810087937.5A CN108413919B (en) | 2018-01-30 | 2018-01-30 | Pipeline drift diameter detection device |
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| CN108413919B CN108413919B (en) | 2020-08-28 |
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