CN107727056A - A kind of FlexbleJoint deforms intelligent monitoring device - Google Patents
A kind of FlexbleJoint deforms intelligent monitoring device Download PDFInfo
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- CN107727056A CN107727056A CN201711112895.8A CN201711112895A CN107727056A CN 107727056 A CN107727056 A CN 107727056A CN 201711112895 A CN201711112895 A CN 201711112895A CN 107727056 A CN107727056 A CN 107727056A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 72
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000001953 sensory effect Effects 0.000 claims abstract description 12
- 210000002445 nipple Anatomy 0.000 claims abstract description 4
- 230000002463 transducing effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000003351 stiffener Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001825 Polyoxyethene (8) stearate Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/022—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with a single corrugation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to a kind of FlexbleJoint to deform intelligent monitoring device, belongs to Study On Intelligent Monitoring Techniques field.The device is arranged on tested FlexbleJoint including 180 ° at least with phase angle, a pair of sensory packages containing the first and second displacement transducers respectively, the sensory package includes the two sensorses mounting bracket that outer end is separately fixed on the pipe nipple of FlexbleJoint two, the inner of the two sensorses mounting bracket is hinged with corresponding displacement transducer both ends by ball pivot head respectively, the bearing of trend of institute's displacement sensors and the initial diameter parallel of FlexbleJoint, described first, the setting height(from bottom) of second displacement sensor distance FlexbleJoint axis is identical, and the signal input part of its transducing signal output termination monitoring system of internet of things；The data processing module of the monitoring system of internet of things is with the hope of deformation angle.The present invention has that simple in construction, versatile, measurement is accurate, measurement range is wide, monitoring, the remarkable advantage of durability analysis in real time.
Description
Technical field
The present invention relates to a kind of monitoring device for being used to measure various modifications in FlexbleJoint use, especially a kind of ripple
Line compensator deforms intelligent monitoring device, belongs to Study On Intelligent Monitoring Techniques field.
Background technology
FlexbleJoint（It is commonly called as expansion joint）Effect be to compensate pipeline deformation in use, have work can
The advantages that leaning on, be functional, be compact-sized, therefore as a kind of elastic compensation element that can freely stretch, have been widely used
The departments such as chemical industry, metallurgy, nuclear energy.Deformation in FlexbleJoint use, there are angular, axial direction, transversely deforming etc., conventional reality
Displacement is not easy to detect the working condition that attendant understands compensator in real time without display directly perceived.
The A of Chinese patent CN 106323148 disclose a kind of compensator deflection visualization device, including compensator and benefit
Repay the stiffener plates of device left and right ends, pull bar, nut；It is characterized in that compensator left and right ends stiffener plate pair sets through hole, pull bar
Through through hole, the left end of pull bar is fixing end, and screw thread is set on the body of rod of termination, is coordinated with nut, left end stiffener plate by fixing end
Fixed, the right-hand member of pull bar is free end, and graduation mark is set on the body of rod of termination, and the body of rod is set at left and right sides of graduation mark tail end and right reinforcing plate
Screw thread, spin nut, and nut fixed position is in pipe network and compensator safe operation limit range.
Although the technical scheme of the patent shows the deformation of nose balance product to go a step further, but problems be present：
1）Different types of FlexbleJoint need to measure its displacement deformation using different metering systems, and above-mentioned technical proposal lacks universal
Adaptability；2）Reading is obtained by artificial observation, precision is low, can not record in real time；3）Angular displacement deformation can not be measured, it is impossible to
With follow-up data binding analysis.
The content of the invention
The primary and foremost purpose of the present invention is：The shortcomings that existing for above-mentioned prior art, propose that one kind is versatile, possess
The FlexbleJoint deformation intelligent monitoring device of real-time, while corresponding monitoring method is provided, so as to directly give a variety of ripples
Line compensator caused various modifications in use, are easy to subsequent analysis.
Further aim of the present invention is：It is proposed a kind of FlexbleJoint deformation intelligence that can measure maximum distortion section
Can monitoring device.
In order to reach above primary and foremost purpose, the technical scheme of FlexbleJoint deformation intelligent monitoring device of the present invention is：
A pair of sensory packages on tested FlexbleJoint, the pair of sensory package point are arranged on including 180 ° at least with phase angle
It Han You not distinguish to the first and second equal displacement transducers of FlexbleJoint axial line distance, the sensory package including outer end
The two sensorses mounting bracket being fixed on the pipe nipple of FlexbleJoint two, the two sensorses mounting bracket it is inner respectively with accordingly
Displacement transducer both ends be hinged by ball pivot head, the bearing of trend of institute's displacement sensors and the initial axis of FlexbleJoint
It is parallel, the signal input part of the transducing signal output termination monitoring system of internet of things of institute's displacement sensors；
The monitoring system of internet of things includes the data acquisition module with signal input part, connected with data acquisition module communication
Data transmission module, with data transmission module communication connection data processing module；The data processing module is to by such as
Lower simultaneous equations try to achieve deformation angle θ：
Δ1=L1+R*sinθ+L2*cosθ
Δ2= (La+Lc)/2
Δ3= R(1-cosθ) +L2*sinθ
R*θ=Lb
In formula：θ --- the deformation angle that both ends section where the first and second sensors is formed after FlexbleJoint deformation,
Δ 1 --- the axis projection length of intermediate cross-section after FlexbleJoint deformation,
Δ 2 --- the chord length of intermediate cross-section after FlexbleJoint deformation,
Δ 3 --- FlexbleJoint deformation after intermediate cross-section perpendicular to axial direction offset projection length,
L1 --- displacement transducer left end away from FlexbleJoint left end initial distance,
L2 --- displacement transducer right-hand member away from FlexbleJoint right-hand member initial distance,
The deformation measurement value of La --- the first displacement transducer,
The deformation measurement value of Lc --- second displacement sensor,
The initial length of Lb --- bellows.
L1, L2, La, Lc, Lb are the datum of input in above formula, therefore simultaneous equations can solve required deformation
Angle.
Compared with prior art, technical scheme has following remarkable advantage：
1）With universal adaptability, can be used for measuring（Single entry hinge type, single entry universal type, compound pull rod type, bend pipe pressure are put down
Weighing apparatus type etc.）The displacement deformation of all kinds FlexbleJoint；
2）Angular displacement and the compound complex deformation of axial displacement can be measured, and then decomposites actual angular displacement deformation amount and axle
To displacement；
3）Monitoring in real time, the deformation of record FlexbleJoint are realized by technology of Internet of things, precision is high, data are accurate.
In order to reach further purpose, present invention additionally comprises be arranged on 180 ° of phase angle on tested FlexbleJoint,
Another pair sensory package containing the third and fourth displacement transducer respectively, section where third and fourth displacement transducer
With section where the first and second displacement transducers into predetermined phase angle α, the data processing module is also to by equation below
Try to achieve maximum distortion cross-sectional angle β：
[La-(La+Lc)/2]*sin(β)= [La2-(La2+Lc2)/2]*sin(α-β)
In formula：The phase angle of section constitution where α --- first, second displacement transducer and the three, the 4th sensors（Preferably
90°）,
The deformation measurement value of La --- the first displacement transducer,
The deformation measurement value of Lc --- second displacement sensor,
The deformation measurement value of La2 --- triple motion sensor,
Lc2 --- the deformation measurement value of the 4th displacement transducer,
The angle in section and maximum distortion section where β --- the three, the 4th displacement transducers.
α, L1, L2, Lb, La, Lc, La2, Lc2 are known quantity in above formula, therefore can solve to obtain β value.Because this enters
The technical scheme of one step can obtain the accurate location in maximum distortion face, therefore can more accurately carry out data processing, deeply
Analyze the working condition of FlexbleJoint.
In a word, the present invention can not only accurate measurement FlexbleJoint various displacement deformations caused in actual use,
And simple in construction, easy for installation, versatile, measurement range is wide, possesses real-time, so as to significantly facilitate detection attendant
The working condition of monitoring compensator in real time.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is Fig. 1 side view.
Fig. 3 is the structural representation that Fig. 1 embodiment FlexbleJoints are subjected to displacement.
Fig. 4 is geometrical relationship schematic diagram corresponding to Fig. 3.
Fig. 5 is the monitoring system of internet of things schematic diagram of embodiment one
Fig. 6 is the structural representation of the embodiment of the present invention two.
Fig. 7 is Fig. 6 side view.
Fig. 8 is the structural representation that Fig. 6 embodiment FlexbleJoints are subjected to displacement.
In figure：1st, first straight line displacement transducer；2nd, sensor mount；3rd, FlexbleJoint；4th, take over；5th,
Two linear displacement transducers；6th, the 3rd linear displacement transducer；7th, the 4th linear displacement transducer.
Embodiment
Embodiment one
The present embodiment FlexbleJoint deformation intelligent monitoring device as shown in Figure 1 and Figure 2, including with phase angle 180 ° be arranged on
A pair of sensory packages on tested FlexbleJoint 3, the sensor cluster contain first straight line displacement transducer 1 and second straight line
Two L-shaped sensor mounts 2 being fixed on 3 liang of pipe nipples 4 of FlexbleJoint are respectively welded in displacement transducer 5 and outer end,
There is the mounting hole of axially spaced-apart distribution respectively on two L-shaped sensor mounts 2；Enough height can be so left, are prevented
Sensor interferes with FlexbleJoint 3 in the measurements, and can adjust the initial installation interval at both ends on demand.Two sensorses are pacified
The inner for shelving 2 passes through ball pivot head with corresponding linear displacement transducer both ends respectively（It is commonly called as flake joint）It is be hinged, straight line position
The bearing of trend of displacement sensor 1,5 and the initial diameter parallel of FlexbleJoint 3, linear displacement transducer 1,5 to ripple compensation
The distance of the axis of device 3（It is commonly called as setting height(from bottom)）It is identical, the signal input part of its transducing signal output termination monitoring system of internet of things.
The monitoring system of internet of things of the present embodiment is shown in Figure 5, and F2116GPRS IP MODEM are with signal input
The data acquisition module at end, the integrated chip with the data transmission module of data acquisition module communication connection, can be completed each straight
The signal acquisition of line position sensor and transmission；E430 ThinkPad are with the data with data transmission module communication connection
Processing module, it can receive and calculate the data of processing data transport module transmission, and then judge that each FlexbleJoint product is
No safety, and comprehensive analysis its whether reached the corresponding life-span, send corresponding indication signal.
Data processing module therein by following simultaneous equations trying to achieve deformation angle θ（Referring to Fig. 3, Fig. 4）：
Δ1=L1+R*sinθ+L2*cosθ
Δ2= (La+Lc)/2
Δ3= R(1-cosθ) +L2*sinθ
R*θ=Lb
In formula：θ --- the deformation angle that both ends section where the first and second sensors is formed after FlexbleJoint deformation,
Δ 1 --- the axis projection length of intermediate cross-section after FlexbleJoint deformation,
Δ 2 --- the chord length of intermediate cross-section after FlexbleJoint deformation,
Δ 3 --- FlexbleJoint deformation after intermediate cross-section perpendicular to axial direction offset projection length,
L1 --- displacement transducer left end away from FlexbleJoint left end initial distance,
L2 --- displacement transducer right-hand member away from FlexbleJoint right-hand member initial distance,
The deformation measurement value of La --- the first displacement transducer,
The deformation measurement value of Lc --- second displacement sensor,
The initial length of Lb --- bellows.
L1=89.5, L2=89.5, La=446, Lc=391, Lb=240 in above formula, therefore can solve change by simultaneous equations
Shape angle θ is 7.12 °.Measured data by uploading sensor can be achieved compensator real-time displacement to data processing module and examine
Survey, carry moves the follow-up works such as alarm and analysis of Fatigue-life.It was verified that should embodiment can not only accurate measurement ripple
Compensator various displacement deformations caused in actual use, and it is simple in construction, easy for installation, versatile, measurement is accurate,
Measurement range is wide, possesses real-time, greatly facilitates the work that detection attendant monitors compensator in real time.
Embodiment two
The FlexbleJoint of the present embodiment deforms intelligent monitoring device as shown in Fig. 6, Fig. 7 and Fig. 8, and special feature is to implement
On the basis of example one, add and be arranged on tested FlexbleJoint 3 with 180 ° of phase angle, sensed respectively containing the 3rd straight-line displacement
Another pair sensory package of the linear displacement transducer 7 of device 6 and the 4th.Third and fourth linear displacement transducer 6,7 place sections
With first and second straight line displacement sensors 1,5 place sections into 90 ° of predetermined phase angle, the data processing of monitoring system of internet of things
Module by equation below also trying to achieve maximum distortion cross-sectional angle β：
[La-(La+Lc)/2]*sin(β)= [La2-(La2+Lc2)/2]*sin(α-β)
In formula：The phase angle of section constitution, this implementation where α --- first, second displacement transducer and the three, the 4th sensors
Example is 90 °,
The deformation measurement value of La --- the first displacement transducer,
The deformation measurement value of Lc --- second displacement sensor,
The deformation measurement value of La2 --- triple motion sensor,
Lc2 --- the deformation measurement value of the 4th displacement transducer,
The angle in section and maximum distortion section where β --- the three, the 4th displacement transducers.
When α=90 ° in above formula, L1=90, L2=90, La=450, Lc=387.08, La2=440, Lc2=397.08, Lb=
240 when being known quantity, can solve to obtain the third and fourth linear displacement transducer 6,7 place sections and maximum distortion section
Angle β be 34.3 °, thus obtain the accurate location in maximum distortion face, can further carry out Data Analysis Services, know ripple
The working condition of line compensator.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical scheme, all fall within the protection domains of application claims.
Claims (5)
1. a kind of FlexbleJoint deforms intelligent monitoring device, it is characterised in that：Quilt is arranged on including 180 ° at least with phase angle
A pair of sensory packages on FlexbleJoint are surveyed, the pair of sensory package contains equal to FlexbleJoint axial line distance respectively
First and second displacement transducers, the sensory package include two biographies that outer end is separately fixed on the pipe nipple of FlexbleJoint two
Sensor mounting bracket, the inner of the two sensorses mounting bracket are hinged with corresponding displacement transducer both ends by ball pivot head respectively,
The bearing of trend of institute's displacement sensors and the initial diameter parallel of FlexbleJoint, the transducing signal of institute's displacement sensors are defeated
Go out to terminate the signal input part of monitoring system of internet of things；
The monitoring system of internet of things includes the data acquisition module with signal input part, connected with data acquisition module communication
Data transmission module, with data transmission module communication connection data processing module；The data processing module is to by such as
Lower simultaneous equations try to achieve deformation angle θ：
Δ1=L1+R*sinθ+L2*cosθ
Δ2= (La+Lc)/2
Δ3= R(1-cosθ) +L2*sinθ
R*θ=Lb
In formula：θ --- the deformation angle that both ends section where the first and second sensors is formed after FlexbleJoint deformation,
Δ 1 --- the axis projection length of intermediate cross-section after FlexbleJoint deformation,
Δ 2 --- the chord length of intermediate cross-section after FlexbleJoint deformation,
Δ 3 --- FlexbleJoint deformation after intermediate cross-section perpendicular to axial direction offset projection length,
L1 --- displacement transducer left end away from FlexbleJoint left end initial distance,
L2 --- displacement transducer right-hand member away from FlexbleJoint right-hand member initial distance,
The deformation measurement value of La --- the first displacement transducer,
The deformation measurement value of Lc --- second displacement sensor,
The initial length of Lb --- bellows.
2. FlexbleJoint according to claim 1 deforms intelligent monitoring device, it is characterised in that：Also include with phase angle
180 ° be arranged on tested FlexbleJoint, another pair sensory package containing the third and fourth displacement transducer respectively, it is described
Section is described into predetermined phase angle α where section where third and fourth displacement transducer and the first and second displacement transducers
Data processing module by equation below also trying to achieve maximum distortion cross-sectional angle β：
[La-(La+Lc)/2]*sin(β)= [La2-(La2+Lc2)/2]*sin(α-β)
In formula：The phase angle of section constitution where α --- first, second displacement transducer and the three, the 4th sensors, preferably
90 °,
The deformation measurement value of La --- the first displacement transducer,
The deformation measurement value of Lc --- second displacement sensor,
The deformation measurement value of La2 --- triple motion sensor,
Lc2 --- the deformation measurement value of the 4th displacement transducer,
The angle in section and maximum distortion section where β --- the three, the 4th displacement transducers.
3. FlexbleJoint according to claim 2 deforms intelligent monitoring device, it is characterised in that：The predetermined phase angle
For 90 °.
4. FlexbleJoint according to claim 3 deforms intelligent monitoring device, it is characterised in that：The sensor installation
Frame is L-shaped.
5. FlexbleJoint according to claim 4 deforms intelligent monitoring device, it is characterised in that：The sensor installation
There is the mounting hole of axially spaced-apart distribution on frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112895.8A CN107727056B (en) | 2017-11-13 | 2017-11-13 | Intelligent deformation monitoring device for corrugated compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112895.8A CN107727056B (en) | 2017-11-13 | 2017-11-13 | Intelligent deformation monitoring device for corrugated compensator |
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| Publication Number | Publication Date |
|---|---|
| CN107727056A true CN107727056A (en) | 2018-02-23 |
| CN107727056B CN107727056B (en) | 2024-03-29 |
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| CN201711112895.8A Active CN107727056B (en) | 2017-11-13 | 2017-11-13 | Intelligent deformation monitoring device for corrugated compensator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358554A (en) * | 2018-11-09 | 2019-02-19 | 沈阳化工大学 | A kind of FlexbleJoint wireless monitor system based on mobile terminal |
| CN109489735A (en) * | 2018-12-30 | 2019-03-19 | 江苏恒丰波纹管有限公司 | Pipeline compensator intelligent measurement and monitoring system |
| CN110030966A (en) * | 2019-03-06 | 2019-07-19 | 武汉理工大学 | Monitor the device and method of axial, the angular deformation size and Orientation of FlexbleJoint |
| CN110411391A (en) * | 2019-07-05 | 2019-11-05 | 中国石油天然气股份有限公司 | Pipeline axial displacement detection device and method |
| CN111895917A (en) * | 2020-08-19 | 2020-11-06 | 中国科学院力学研究所 | Method for detecting deformation of high-enthalpy-resistant gas medium compensator |
| CN113048317A (en) * | 2019-12-29 | 2021-06-29 | 江苏恒丰波纹管有限公司 | Pipeline compensator with telescopic displacement detection device |
| CN113048318A (en) * | 2021-04-13 | 2021-06-29 | 南京晨光东螺波纹管有限公司 | Corrugated pipe compensator for online displacement monitoring and method for online displacement monitoring |
| CN114857392A (en) * | 2022-04-24 | 2022-08-05 | 江苏奥光波纹管有限公司 | Bypass straight pipe pressure balance type compensator with pressure detection function |
| CN115164819A (en) * | 2022-07-25 | 2022-10-11 | 中铁二局集团建筑有限公司 | Deformation detection method and system for underground pipeline |
| CN115603245A (en) * | 2022-12-12 | 2023-01-13 | 江苏安靠智能输电工程科技股份有限公司（Cn） | Intelligent bellows |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358554A (en) * | 2018-11-09 | 2019-02-19 | 沈阳化工大学 | A kind of FlexbleJoint wireless monitor system based on mobile terminal |
| CN109489735A (en) * | 2018-12-30 | 2019-03-19 | 江苏恒丰波纹管有限公司 | Pipeline compensator intelligent measurement and monitoring system |
| CN110030966A (en) * | 2019-03-06 | 2019-07-19 | 武汉理工大学 | Monitor the device and method of axial, the angular deformation size and Orientation of FlexbleJoint |
| CN110411391B (en) * | 2019-07-05 | 2022-03-01 | 中国石油天然气股份有限公司 | Pipeline axial displacement detection device and method |
| CN110411391A (en) * | 2019-07-05 | 2019-11-05 | 中国石油天然气股份有限公司 | Pipeline axial displacement detection device and method |
| CN113048317A (en) * | 2019-12-29 | 2021-06-29 | 江苏恒丰波纹管有限公司 | Pipeline compensator with telescopic displacement detection device |
| CN111895917A (en) * | 2020-08-19 | 2020-11-06 | 中国科学院力学研究所 | Method for detecting deformation of high-enthalpy-resistant gas medium compensator |
| CN111895917B (en) * | 2020-08-19 | 2021-08-31 | 中国科学院力学研究所 | Method for detecting deformation of high-enthalpy-resistant gas medium compensator |
| CN113048318A (en) * | 2021-04-13 | 2021-06-29 | 南京晨光东螺波纹管有限公司 | Corrugated pipe compensator for online displacement monitoring and method for online displacement monitoring |
| CN114857392A (en) * | 2022-04-24 | 2022-08-05 | 江苏奥光波纹管有限公司 | Bypass straight pipe pressure balance type compensator with pressure detection function |
| CN115164819A (en) * | 2022-07-25 | 2022-10-11 | 中铁二局集团建筑有限公司 | Deformation detection method and system for underground pipeline |
| CN115164819B (en) * | 2022-07-25 | 2023-10-27 | 四川建力源工程技术咨询有限公司 | Deformation detection method and system for underground pipeline |
| CN115603245A (en) * | 2022-12-12 | 2023-01-13 | 江苏安靠智能输电工程科技股份有限公司（Cn） | Intelligent bellows |
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