CN111964637A - Deformation detection portion and pipeline deformation detection device with same - Google Patents
Deformation detection portion and pipeline deformation detection device with same Download PDFInfo
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- CN111964637A CN111964637A CN201910417115.3A CN201910417115A CN111964637A CN 111964637 A CN111964637 A CN 111964637A CN 201910417115 A CN201910417115 A CN 201910417115A CN 111964637 A CN111964637 A CN 111964637A
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- deformation
- detection
- mileage
- pipeline
- battery compartment
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a deformation detection part for detecting the inner wall of a pipeline, which comprises: at least one deformation sensing arm assembly disposed along an axial direction; the two adjacent deformation detection arm assemblies are connected in the axial direction through connecting pieces; each deformation detection arm assembly comprises a detection arm support frame 52 and a plurality of detection arms 53 which are distributed along the circumferential direction of the detection arm support frame 52 and are divergently arranged outwards; each deformation detection arm assembly is twisted at a certain angle in the circumferential direction, so that all the detection arms 53 are arranged in a staggered manner and uniformly distributed in the circumferential direction when viewed in the axial direction. Based on this kind of deformation detection portion, still provide a pipeline deformation detection device, be particularly useful for the deformation detection of small-bore pipeline.
Description
Technical Field
The invention belongs to the technical field of pipeline detection, particularly relates to a deformation detection part and a pipeline deformation detection device with the same, and is particularly suitable for small-diameter pipelines.
Background
The pipeline positioning technology is mostly limited by the size, the material and the detection environment of the pipeline, and has poor universality and low precision. The inertial navigation positioning technology is not influenced by external electromagnetic interference and pipeline burial depth, and is suitable for pipelines made of various materials. At present, the diameter of underground pipeline deformation detection based on the inertia technology is limited by the inertia device, and the diameter can only be used for pipelines with larger calibers, and generally requires that the inner diameter of the detected pipeline is not less than 80 millimeters. For example, as shown in fig. 19, the pipe inner wall deformation detection device suitable for a pipe with an inner diameter of 800 mm or more includes a deformation detection portion 8 for detecting deformation of the pipe inner wall, a mileage wheel 6 provided with a sensor, a battery compartment 13 and a positioning compartment 14, the sensor on the mileage wheel 6 detects the mileage of the mileage wheel in the pipe, an inertial unit is arranged in the positioning compartment to detect three-dimensional attitude information of a detection point when the detection device travels in the pipe, the mileage wheel and the sensor thereon form a mileage measurement portion, and the battery compartment 13 supplies power to the positioning compartment, the mileage measurement portion and the deformation detection portion. The detection device shown in fig. 19 is suitable for detecting a pipeline with a large pipe diameter, and is not suitable for measuring a small-diameter pipeline with an inner diameter of less than 80 mm, because the deformation detection part 8 is densely arranged along the circumferential direction to ensure the detection precision, the whole diameter is large, and the structure cannot be suitable for measuring the deformation of the small-diameter pipeline.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a deformation detecting portion and a pipe deformation detecting device having the same, which are particularly suitable for deformation measurement of small-diameter pipes.
The invention relates to a deformation detection part for detecting deformation of a pipeline, which comprises at least one deformation detection arm assembly arranged along the axial direction; the two adjacent deformation detection arm assemblies are connected in the axial direction through connecting pieces; each deformation detection arm assembly comprises a detection arm support frame 52 and a plurality of detection arms 53 which are distributed along the circumferential direction of the detection arm support frame 52 and are divergently arranged outwards; each deformation detection arm assembly is twisted at a certain angle in the circumferential direction, so that all the detection arms 53 are arranged in a staggered manner and uniformly distributed in the circumferential direction when viewed in the axial direction.
By last, for background art, set up a plurality of deformation and detect the arm subassembly for every deformation detects the arm subassembly and can set up a small amount of detection arm, thereby has reduced the size of every deformation and has detected the arm subassembly, and then can produce the less deformation of diameter and detect the arm subassembly, with the deformation measurement who is applicable to the small-bore pipeline. On the other hand, the deformation detection arm assemblies are arranged by twisting at a certain angle along the circumferential direction, so that all the detection arms 53 seen along the axial direction are staggered and uniformly distributed along the circumferential direction, and the circumferential detection precision of the detected pipeline is ensured.
Preferably, the detection arm 53 comprises: a torsion bar 532, one end of which is provided with a wear pad 533, and the other end of which is hinged with a rotating shaft 531, and the torsion bar 532 is assembled on the detection arm support frame 52 through the rotating shaft 531 to realize the hinging between the torsion bar 532 and the detection arm support frame 52; a torsion spring 534 having one end fixed and the other end provided on the torsion bar 532; and a deformation sensor for detecting the rotation angle of the rotation shaft 531.
Therefore, the wear-resistant plate 533 is in contact with the inner wall of the pipeline, the torsion bar drives the rotating shaft to rotate due to the protrusion or the recess of the inner wall of the pipeline, the rotating angle of the rotating shaft is detected through the deformation sensor, and the change value from the detection point to the center line of the rotating shaft, namely the deformation value of the inner wall of the pipeline, is calculated according to the geometric relationship between the length of the torsion bar 532 and the rotating shaft 531.
Preferably, the detecting arm 53 is capable of rotating towards the corresponding groove on the surface of the detecting arm support 52 when being stressed.
From last, when the bore is little in the pipeline to be measured, detection arm 53 can rotate to the recess internal direction to make whole diameter diminish, be applicable to the measurement of little pipe diameter pipeline.
Preferably, the connecting piece is a flexible connecting piece.
By the above, when the inner caliber of the measured pipeline is small and passes through a curve, the structure is adopted to facilitate passing through the curve.
The invention also provides a pipeline deformation detection device, which comprises: the battery compartment 1 and the detection part which are connected through a flexible pipe are axially arranged; the electric wire electrically connecting the battery compartment 1 and the detection part is arranged through the interior of the flexible pipe 2;
the detection part comprises the deformation detection part.
By last, through axial arrangement battery compartment 1 and detection portion for whole diameter is less, is fit for the deformation measurement of small-bore pipeline, and on the other hand, battery compartment 1 and detection portion pass through the flexible tube 2 and connect in sections, when small-bore pipeline detects, can conveniently pass through the bend.
Preferably, the detection part further comprises a positioning bin 3 and a mileage measuring part 4; an inertia unit is arranged in the positioning bin 1, and a mileage wheel 45 is assembled on the mileage measuring part; the battery compartment 1, the positioning compartment 3, the mileage measuring part 4 and the deformation detecting part are axially arranged, and the position arrangement sequence is arbitrary; the adjacent two are connected through the flexible pipe 2, and the electric wire of the electric connection between the two is arranged through the interior of the flexible pipe 2.
By last, battery compartment 1 the location storehouse 4 mileage measurement portion 4 deformation detection portion passes through the flexible tube 2 along the axial and connects, and this kind of festival flexonics's mode can be smoothly through the bend of return bend, detects deformation in the return bend to, adopt a plurality of detection device circumference evenly distributed, accomplish deformation detection in the pipeline jointly, can improve the resolution ratio that detects.
Preferably, the mileage measuring unit 4 includes a measuring bracket 46 including a support plate 462 extending in an axial direction, two support arms 43 supported by an elastic member, one end of each of the two support arms 43 having a certain angle is connected to the rotation shaft 44 at both sides of the support plate 462, and the other end thereof is hinged to a mileage wheel 45.
From the above, the two mileage wheels 45 roll along the inner wall of the pipeline, the mileage sensor 47 provided to each mileage wheel 45 detects the number of rolling circles of the mileage wheel, and then the mileage is calculated from the number of rolling circles and the diameter of the mileage wheel 45. The angle between the two support arms 43 is adjusted by the elastic element torsional spring 48, so that the mileage wheel 45 is tightly attached to the inner wall of the pipeline, and the mileage measuring part 4 can count accurately.
Preferably, the mileage measuring part further includes an electrical cabin 41, inside which an electrical connector is assembled; one end of the electrical cabinet 41 is connected to the supporting plate 462; a first pulling hole 4622 is also provided outside the support plate 462.
Therefore, an electric connector is arranged in the electric appliance bin 41, and the electric connector can be protected by the electric appliance bin 41; the first traction hole 4622 is fixed with a traction rope for facilitating traction.
Preferably, the positioning bin comprises a positioning bin main body 31 and positioning bin joints 32 connected to two ends of the positioning bin main body 31; the positioning bin main body 31 is internally provided with a data acquisition and processing unit and the inertia unit which are distributed along the axial direction.
By the above, the positioning bin is internally provided with the data acquisition and processing unit and the inertia unit which are fixed along the length direction through respective end seats, so that the diameter of the positioning bin is smaller, and the positioning bin particularly passes through a small-caliber pipeline.
Preferably, the battery compartment comprises an end cover 12 and a battery compartment connector 13, wherein a second traction hole 121 is formed in the end cover 12, and two connection ends of the battery compartment connector 13 are communicated.
The second traction hole is fixed with the traction rope, so that traction is facilitated.
Drawings
FIG. 1 is a schematic structural diagram of a pipeline deformation detection device;
FIG. 2 is a schematic structural diagram of a battery compartment;
FIG. 3 is a schematic structural view of an end cap of a battery compartment;
FIG. 4 is a schematic view of a battery compartment connector structure;
FIG. 5 is a schematic structural view of a positioning bin;
FIG. 6 is a schematic view of the structure of the joint of the positioning bin;
FIG. 7 is a schematic structural view of a mileage measuring section;
fig. 8 is a partial structural schematic view of the mileage measuring section;
FIG. 9 is a schematic view showing the construction of a measuring stand of the mileage measuring part;
FIG. 10 is a schematic structural view of a stainless steel flexible pipe;
FIG. 11 is a schematic structural view of one of the stainless steel flexible pipe joints;
fig. 12 is a schematic structural diagram of a second stainless steel flexible pipe joint.
FIG. 13 is a schematic structural view of a strain detection unit;
fig. 14 is a plan view of the deformation detecting portion;
FIG. 15 is a schematic structural diagram of a set of detecting elements of the deformation detecting unit;
FIG. 16 is a schematic structural view of a connection end cap of the deformation detecting portion;
FIG. 17 is a schematic view of the structure of the detection arm;
FIG. 18 is a geometric diagram of deformation detection;
fig. 19 is a schematic structural diagram of a pipe deformation detecting apparatus in the background art.
Detailed Description
As shown in fig. 1, a pipe deformation detecting apparatus includes a battery compartment 1, a deformation detecting part 5, a positioning compartment 3, and a mileage measuring part 4, which are sequentially arranged along a length direction and connected through a stainless steel flexible pipe 2. The battery bin 1, the stainless steel flexible pipe 2 and the positioning bin 3 are all in a closed cylindrical shape, have small diameters and are particularly suitable for passing through a small-caliber pipeline; the battery compartment 1 is electrically connected with the deformation detection part 5, the positioning compartment 3 and the mileage measurement part 4 respectively, and supplies electric energy to the battery compartment. The mileage measuring part 4 detects the number of turns of the mileage wheel 45 which is described later walking in the pipeline, the deformation detecting part 5 acquires the rotation angle information of the detecting arm 53 which is described later, the positioning bin 3 detects the three-dimensional posture information of the device in the process of advancing in the pipeline, and the data acquisition and processing unit acquires the deformation data of the pipeline by acquiring and calculating the three kinds of information.
As shown in fig. 2 to 4, the battery compartment 1 is a closed cylinder, and includes a battery main body 11, end caps 12 respectively connected to two ends of the battery main body 11, and a battery compartment joint 13; the end cover 12 is provided with a second traction hole 121, when measuring in the pipeline, the rope passes through the second traction hole 121, and the pipeline deformation detection device is driven to move forwards in the pipeline by manually drawing the rope to detect the deformation condition in the pipeline; the connection end 122 of the end cap 12 and the cell body 11 is provided with external threads to be screwed with the cell body 11. The end 131 of the battery compartment joint 13 connected with the battery body 11 is provided with an external thread, the end 132 connected with the stainless steel flexible pipe is provided with an external thread, the two connecting ends of the battery compartment joint 13 are communicated with each other through a middle through hole, and an electric wire connected with a battery in the battery body conveniently passes through the hollow stainless steel flexible pipe 2 through the through hole to be connected with the deformation detection part 5.
When measuring longer pipeline, can set up a plurality of battery compartments 1, guarantee measuring device's normal operating.
Positioning bin 3
As shown in fig. 5 to 6, the positioning bin 3 comprises a positioning bin main body 31 and positioning bin joints 32 connected to two ends of the positioning bin main body 31, wherein external threads are arranged at a connecting end 322 of the positioning bin joint 32 and the positioning bin main body 31, external threads are arranged at a connecting end 321 connected with a stainless steel flexible pipe, and the two connecting ends 321 and 322 are communicated through holes; an inertial unit and a data acquisition and processing unit electrically connected with the inertial unit are arranged in the positioning bin main body 31;
the data acquisition and processing unit and the inertial unit are fixed through end seats respectively, and threading holes or threading grooves are formed in the end seats for fixing the data acquisition and processing unit and the inertial unit. The electric wire led through the stainless steel flexible pipe 2 is led out through the threading hole or the threading groove on the end seat after being connected with the data acquisition and processing unit and the inertia unit.
The data acquisition and processing unit acquires the data of the inertial unit and then analyzes the three-dimensional attitude information of the detection device in the detection pipeline through calculation.
As shown in fig. 7 to 9, the mileage measuring part 4 includes a mileage connector 42, an electrical cabin 41, and a mileage measuring assembly, which are connected in sequence, wherein an electrical connector is provided in the electrical cabin 41, and the electrical cabin 41 can hide and protect the electrical connector.
The mileage measuring assembly comprises a measuring support 46 connected with the other end of the electrical appliance bin 41, a rotating shaft 44 and a torsion spring 48 sleeved on the periphery of the rotating shaft 44, wherein the rotating shaft 44 and the torsion spring 48 penetrate through a mounting hole 4621 on the measuring support 46, two ends of the rotating shaft extend out of the measuring support 46, one end of the torsion spring is respectively sleeved on two support arms 43 at two ends of the rotating shaft 44, the other ends of the two support arms 43 are respectively hinged with a mileage wheel 45 rolling along the inner wall of the pipeline, two ends of the torsion spring 48 are respectively arranged on the two support arms 43, each support arm 43 is provided with a mileage sensor 47 with two Hall sensing elements to sense the number of rolling circles of the mileage wheel 45 on the support arm 43 and transmit signals to the data acquisition and processing unit 312, and the data acquisition and processing unit 312 calculates the traveling mileage of the mileage wheel according to the.
The measuring bracket 46 comprises a measuring joint 461 connected with the electrical appliance bin 41 and a supporting plate 462 connected with the measuring joint 461, a rotating shaft mounting hole 4621 and a second traction hole 4622 are arranged on the supporting plate 462, the rotating shaft 44 and a torsion spring 48 on the periphery of the rotating shaft pass through the rotating shaft mounting hole 4621, two ends of the torsion spring 48 extend out of the supporting plate 462, and two ends of the torsion spring 48 are respectively inserted into fixing holes of the two supporting arms 43, so that the two mile wheels 45 roll tightly against the inner wall of the pipeline.
By above structure, adopt backup pad 462, its both sides stretch out support arm 43 and mileage wheel 45, this kind of structure makes mileage wheel 45 account for mileage measurement portion 4 radial direction height requirement little, and moves towards radial center when receiving pressure to compact structure, the whole that makes mileage measurement portion 4 can make less in the radial direction, is particularly suitable for the detection of small-bore pipeline.
Stainless steel flexible pipe
As shown in fig. 10 to 12, the stainless steel flexible pipe 2 includes a flexible pipe main body 21, and flexible pipe joints 22 connected to both ends of the flexible pipe main body 21; the flexible tube main body 21 is hollow inside; both connecting ends of the flexible pipe joint 22 are provided with internal threads, and the two connecting ends are communicated, one end 222 of the flexible pipe joint 22 can rotate relative to the end of the flexible pipe main body 21, and the other end 221 is in threaded connection with the battery compartment joint 13, the connecting end cover 51 of the deformation detection part 5, the positioning compartment joint 32 and the mileage measurement part joint 461, so that an electric wire led out by the battery main body passes through the battery joint, the stainless steel flexible pipe, a deformation sensor in the deformation detection part 5, the stainless steel flexible pipe 2 and a data acquisition and processing unit in the positioning compartment 3 to be described later and is electrically connected with an inertial unit, and then is electrically connected with a mileage sensor 47 of the mileage measurement part continuously through the stainless steel flexible pipe 2.
As shown in fig. 13, the deformation detecting portion 5 includes two connecting end caps 51 connected to the head and the tail ends and disposed oppositely, and first to third deformation detecting arm assemblies disposed between the two connecting end caps 51 and connected in sequence by a connecting piece 54 along the central axis direction, wherein the first to third deformation detecting arm assemblies are sequentially arranged in a staggered manner by 40 degrees in the circumferential direction; the first to third deformation detection arm assemblies each include a detection arm support frame 52 and three detection arms 53 arranged obliquely below and uniformly along the circumferential direction of the detection arm support frame 52, and the 9 detection arms 53 of the first to third deformation detection arm assemblies are arranged and distributed with circumferential phase difference of 40 degrees, as shown in fig. 14, when the deformation detection device travels and measures in a pipeline, the tail ends of the 9 detection arms 53 contact with the inner wall of the pipeline.
As shown in fig. 15 and 16, the connecting end cap 51 is a cylindrical structure, and a connecting column 511 with an external thread at the lower end thereof is connected with the detecting arm support 52.
As shown in fig. 17, each detection arm 53 includes a torsion bar 532, a wear pad 533 provided on one end of the torsion bar 532, a rotation shaft 531 fixedly attached to the other end of the torsion bar 532, a torsion spring 534 having one end fixed to the other end provided on the torsion bar 532, and a deformation sensor provided near an end portion of the rotation shaft 531. When the deformation detection device is used for measuring in a pipeline, the wear-resistant sheet 533 is in contact with the inner wall of the pipeline, when the wear-resistant sheet 533 is raised or recessed in the pipeline, the torsion bar 532 is driven by the wear-resistant sheet 533 to rotate relative to the inner wall of the pipeline, the deformation sensor detects a rotating magnetic field signal of the rotating shaft 531, the data acquisition and processing unit obtains a rotation angle of the rotating shaft detected by the deformation sensor, and a change value of a distance H between a detection point of the inner wall of the pipeline and the center line of the rotating shaft, namely a deformation value d of the inner wall of the pipeline, is calculated according to a geometric relationship between the rotation angle and the.
Because the pipeline size restriction, a plurality of deformation sensor and torsion bar 532 can appear interfering when arranging, therefore torsion bar 532 can only loose the distribution in pipeline circumference, forms the loose detection, and its circumference detects the precision and descends, needs the axial to set up multiunit deformation detection subassembly to adjacent two sets of deformation detection subassemblies stagger certain angle in circumference, makes all torsion bars circumference distribute evenly, and this mode of setting has improved circumference and has detected the precision.
In a second embodiment (not shown), the support plate 462 of the measuring stand 46, corresponding to the second pulling hole 4622 of fig. 14, can be modified to provide a connector 461 and a separate pulling portion, which includes the connecting connector matching the connector 461, and a pulling plate mounted on the connecting connector, which has the second pulling hole 4622, i.e., to form a structure similar to the end cap 12. The battery compartment 1, the positioning compartment 3, the mileage measuring part 4 and the connecting joints on the stainless steel flexible pipe 2 can be standardized, so that the mileage measuring part 4 can be assembled at other positions according to the measuring requirements, and the traction plate and the end cover 12 are arranged at two ends to be connected with a traction rope.
In a third embodiment (not shown), the measuring brackets 46 constitute a standard component with joints at both ends in the second embodiment, and in this third embodiment, two measuring brackets 46 may be assembled, wherein the two measuring brackets 46 may be assembled adjacently through the joints, and the two support plates 462 of the two measuring brackets 46 are assembled at an angle, such as 90 degrees, to form two sets of odometer wheels 45 perpendicular to each other when viewed in the axial direction, so as to more stably place the pipe measuring device in the middle of the pipe to be measured.
In the fourth embodiment (not shown), a second support plate is fixedly connected to the outwardly extending side of the support plate 462 of the measuring bracket 46, and the second support plate is assembled to extend in the axial direction of the mileage measuring assembly at 90 °, and the second support plate also has two side-extending support arms 43 and mileage wheels 45 (the detailed structure is not described in detail), so that two sets of mileage wheels 45 perpendicular to each other are formed when viewed in the axial direction, so as to more stably place the pipeline measuring device in the middle of the pipeline to be measured.
With the structure, the invention is particularly suitable for the trafficability of small-caliber pipelines.
The above description is only exemplary of the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In addition, the number of the deformation detection components arranged in the deformation detection part is not limited to three groups, and can be one group, two groups or more than three groups. In addition, the above-mentioned battery compartment 1, location storehouse 3, mileage measurement portion 4 and deformation detection portion 5's order can be adjusted as required and set up to can also set up a plurality of battery compartments, in order to guarantee the power supply, this moment the order can set up as required, for example, in order to ensure that battery compartment 1, location storehouse 3 do not all produce contact friction with the measured pipeline inside, can all assemble the measurement support 46 of the third embodiment at least one tip in each storehouse of battery compartment 1 and location storehouse 3, in all measurement supports 46 of course, only need one mileage wheel can, other mileage wheels can be configured as ordinary wheel.
Claims (10)
1. The utility model provides a deformation detection portion for detect pipeline inner wall, its characterized in that includes:
at least one deformation sensing arm assembly disposed along an axial direction; the two adjacent deformation detection arm assemblies are connected in the axial direction through connecting pieces;
each deformation detection arm assembly comprises a detection arm support frame (52) and a plurality of detection arms (53) which are distributed along the circumferential direction of the detection arm support frame (52) and are divergently arranged outwards;
the deformation detection arm assemblies are arranged by twisting at a certain angle along the circumferential direction, so that all the detection arms (53) are arranged in a staggered manner and are uniformly distributed along the circumferential direction when viewed along the axial direction.
2. The deformation detecting portion according to claim 1, wherein the detecting arm (53) includes:
a torsion bar (532), one end of which is provided with a wear pad (533), and the other end of which is hinged with a rotating shaft (531), and the torsion bar (532) is assembled on the detection arm support frame (52) through the rotating shaft (531) to realize the hinging between the torsion bar (532) and the detection arm support frame (52);
a torsion spring (534) having one end fixed and the other end disposed on the torsion bar (532); and the deformation sensor is used for detecting the rotation angle of the rotating shaft (531).
3. The deformation sensing unit according to claim 2, wherein the sensing arm (53) is rotatable in a recess corresponding to the surface of the sensing arm support (52) when a force is applied thereto.
4. The deformation detecting portion according to claim 1, wherein the connecting member is a flexible connecting member.
5. A pipe deformation detection device, comprising:
the battery compartment (1) and the detection part which are connected through the flexible pipe (2) are axially arranged;
the electric wire electrically connecting the battery compartment (1) and the detection part is arranged through the interior of the flexible pipe (2);
the detection section includes the strain detection section according to any one of claims 1 to 4.
6. The pipe deformation detecting apparatus according to claim 5,
the detection part also comprises a positioning bin (3) and a mileage measurement part (4); an inertia unit is installed in the positioning bin (3), and a mileage wheel (45) is assembled on the mileage measuring part (4);
the battery compartment (1), the positioning compartment (3), the mileage measuring part (4) and the deformation detecting part are axially arranged, and the position arrangement sequence is arbitrary; the adjacent two are connected through a flexible pipe (2), and an electric wire for electric connection between the two passes through the interior of the flexible pipe (2).
7. The pipe deformation detecting apparatus according to claim 6, wherein the mileage measuring portion (4) includes:
a measuring support (46) comprising a support plate (462) extending in an axial direction,
two support arms (43), support through an elastic component, two support arms (43) are the one end of certain angle respectively in the both sides of backup pad (462) are rather than the hub connection, and the other end articulates one respectively mileage wheel (45).
8. The pipe deformation detecting apparatus according to claim 7,
the mileage measuring part also comprises an electrical appliance bin (41) which is internally provided with an electrical connector; one end of the electrical appliance bin (41) is connected with the supporting plate (462);
a first traction hole (4622) is also arranged on the outer side of the supporting plate (462).
9. The pipe deformation detecting apparatus according to claim 6,
the positioning bin comprises a positioning bin main body (31) and positioning bin joints (32) connected to two ends of the positioning bin main body (31);
the positioning bin main body (31) is internally provided with a data acquisition and processing unit and the inertia unit which are distributed along the axial direction.
10. The pipe deformation detecting apparatus according to claim 6,
the battery compartment comprises an end cover (12) and a battery compartment joint (13), wherein a second traction hole (121) is formed in the end cover (12), and two connecting ends of the battery compartment joint (13) are communicated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910417115.3A CN111964637A (en) | 2019-05-20 | 2019-05-20 | Deformation detection portion and pipeline deformation detection device with same |
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| CN201910417115.3A CN111964637A (en) | 2019-05-20 | 2019-05-20 | Deformation detection portion and pipeline deformation detection device with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164039A (en) * | 2022-09-05 | 2022-10-11 | 国网山东省电力公司烟台市蓬莱区供电公司 | Multifunctional measuring tool for power pipeline |
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| CN105066917A (en) * | 2015-07-09 | 2015-11-18 | 哈尔滨工程大学 | Miniature pipeline geographic information system measuring apparatus and measuring method thereof |
| CN205120128U (en) * | 2015-11-16 | 2016-03-30 | 深圳大铁检测装备技术有限公司 | Three -dimensional gesture measuring apparatu of pipeline based on inertia measuring technique |
| CN105300343A (en) * | 2015-12-04 | 2016-02-03 | 郑州双杰科技有限公司 | Tandem type sequence segment deformation monitoring sensing device |
| CN108180883A (en) * | 2017-12-20 | 2018-06-19 | 北京华航无线电测量研究所 | A kind of deformation internal detector of large deformation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164039A (en) * | 2022-09-05 | 2022-10-11 | 国网山东省电力公司烟台市蓬莱区供电公司 | Multifunctional measuring tool for power pipeline |
| CN115164039B (en) * | 2022-09-05 | 2022-11-15 | 国网山东省电力公司烟台市蓬莱区供电公司 | Multifunctional measuring tool for power pipeline |
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