CN206960404U - A kind of inner-walls of duct detection means - Google Patents
A kind of inner-walls of duct detection means Download PDFInfo
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- CN206960404U CN206960404U CN201720649668.8U CN201720649668U CN206960404U CN 206960404 U CN206960404 U CN 206960404U CN 201720649668 U CN201720649668 U CN 201720649668U CN 206960404 U CN206960404 U CN 206960404U
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Abstract
The utility model discloses a kind of inner-walls of duct detection means, it is related to field of measuring technique in pipeline.Detection means includes cylindric nacelle, and being fixed with multiple metals along nacelle circumferencial direction lacks sensor, and metal missing sensor includes：Magnetic field intensity is 0.01T~0.5T permanent magnet, and at least one induction coil being arranged between permanent magnet and inner-walls of duct, the center line of induction coil be axially arranged along pipeline.Magnetization to inner-walls of duct is realized by permanent magnet, and because the magnetic field intensity of permanent magnet is 0.01T~0.5T, only can guarantee that the internal face of Magnetizing pipeline.Further induction coil induced field Strength Changes according to caused by changing inner-walls of duct face obtain detection information.Detection means provided by the utility model reduces the information content acquired in metal missing sensor, and then reduce workload and the working time of information analysis, improve detection efficiency, it can be used as the regular maintenance equipment of oil-gas pipeline, help to find the stolen hole on oil-gas pipeline in time or steal stomata.
Description
Technical field
Field of measuring technique in pipeline is the utility model is related to, more particularly to a kind of inner-walls of duct detection means.
Background technology
With the continuous development of domestic oil gas carrier, oil-gas pipeline buried over long distances is widely used in oil gas production
In the transport of product.Oil gas product is transported to from Accumulation of Hydrocarbon producing region by Crude oil consumption area by the oil-gas pipeline for being embedded in underground, realized
The trans-regional allotment of the oil gas energy.But some criminals are driven by sudden huge profits, the company of drilling on gasoline pipeline buried over long distances
Stolen hole or robber's stomata inside logical oil-gas pipeline carry out stolen, steal gas.Stolen, robber's gas behavior not only result in economic damage
Lose, greatly negative effect is produced to corporate reputation, environmental protection and social stability, the presence of stolen hole or robber's stomata can also
Cause oil, the appearance of gas leakage phenomenon, seriously endanger oil gas transportation safety.Therefore it should sternly hit stolen and steal gas behavior, as early as possible
Investigate established stolen hole on oil-gas pipeline or steal stomata, oil-gas pipeline is safeguarded in time.
In the prior art, there is provided a kind of equipment for detecting stolen hole inside pipeline or stealing stomata, the equipment have circle
The nacelle of tubular, the permanent magnet that magnetic field intensity is more than or equal to 4T (tesla) is fixed with the outside of nacelle.Permanent magnet produces
High-intensity magnetic field the tube wall of oil-gas pipeline is magnetized to saturation state, radially fully magnetise pipeline in pipeline, that is, cause Oil/Gas Pipe
The inner and outer wall in road is respectively provided with magnetic, and now oil-gas pipeline produces induced field, and the magnetic induction line of induced field is axial along pipeline
Distribution.Also there is magnetic sensitive probe on the device simultaneously, for producing detection signal according to the induced field intensity of tube wall.Work as pipe
When there is the defects of gap, hole in internal face or the outside wall surface even tube wall of wall, there is leakage field in the induced field of tube wall
Phenomenon, now the induced field intensity of tube wall changes, and then magnetic sensitive probe is different by the change acquisition of induced field intensity
Normal detection signal.Staff can be judged on oil-gas pipeline inwall by the signal of analysis system analysis magnetic sensitive probe acquisition
With the presence or absence of stolen hole or steal stomata.The equipment has the characteristics of high sensitivity.Specifically, due to strong magnetic caused by the equipment
Field can make the tube wall of oil-gas pipeline be respectively provided with magnetic from the inside to the outside, therefore when the defects of gap in oil gas pipe outer wall causes tube wall
During interior magnetic loop exception, the magnetic sensitive probe of the equipment can get abnormal detection signal.
During the utility model is realized, designer has found that prior art at least has problems with：
When carrying out stolen hole to oil-gas pipeline using equipment of the prior art or stealing stomata detection, detection efficiency be present
It is low, can not be quickly detected stolen hole or steal stomata the problem of.Spent because detection means provided in prior art is sensitive
Height, oil gas tube wall had defect from the inside to the outside is able to detect that, therefore adds signal acquired in analysis magnetic sensitive probe
Complexity, and then extend detection cycle, cause that stolen hole can not be quickly detected or steal stomata.
Utility model content
In order to solve in the prior art to be used for inside oil-gas pipeline to carry out stolen hole or steal the equipment inspection of stomata detection
The problem of efficiency is low is surveyed, the utility model embodiment provides a kind of inner-walls of duct detection means, and concrete technical scheme is as follows：
A kind of inner-walls of duct detection means, the detection means includes cylindric nacelle, along described on the outside of the nacelle
Nacelle circumferencial direction is fixed with multiple metal missing sensors, and the metal missing sensor includes：
Magnetic field intensity is 0.01T~0.5T permanent magnet, and,
At least one induction coil being arranged between the permanent magnet and the inner-walls of duct, in the induction coil
Heart line is axially arranged along pipeline.
Preferably, data acquisition unit is additionally provided with the nacelle, the data acquisition unit passes with metal missing
Sensor electrically connects, for receiving and storing the voltage signal at induction coil both ends described in the metal missing sensor.
Preferably, the support for fixing multiple metal missing sensors, the branch are provided with the nacelle
Frame has cyclic structure, and multiple metal missing sensors are fixed on the outer circumference surface of the support.
Preferably, the detection means also includes being fixed on the position monitoring component outside the nacelle, the position prison
Survey the positional information that component is used to obtain the detection means.
Preferably, the position monitoring component electrically connects with the data acquisition unit.
Preferably, the installing plate for installing the position monitoring component, the installing plate are fixed with the nacelle
With loop configuration, it is axially parallel to the axial direction of the nacelle.
Preferably, the position monitoring component includes the equally distributed boxing of circumferencial direction of at least two along the nacelle
Detector is stitched, the girth joint detector is used for the quantity for obtaining the pipeline annular weld bead that the detection means is passed through, and described
Girth joint detector is fixed on the installing plate by head rod, the girth joint detector and the data acquisition unit
Electrical connection.
Preferably, the position monitoring component includes the odometer of 2 center line symmetrical settings on the nacelle, institute
The one end for stating odometer is fixed on the installing plate, and the other end of the odometer is provided with mileage wheel, the mileage wheel
The axial direction of the nacelle is axially perpendicular to, the odometer electrically connects with the data acquisition unit.
Preferably, annular seal leather cup, the sealing skin are provided with its axial end face in the installing plate
The external diameter of bowl is more than or equal to the internal diameter of the pipeline.
Preferably, the inwall detection means includes 65~75 metal missing sensors, and each metal lacks
The magnetic field intensity of the permanent magnet in lost sensor is 0.4T.
The beneficial effect brought of technical scheme that the utility model embodiment provides is：
In the inner-walls of duct detection means that the utility model embodiment provides, the permanent magnet in metal missing sensor makes pipe
Road inwall magnetization, induction coil induced field Strength Changes according to caused by changing inner-walls of duct face obtain detection information.Due to
The magnetic field intensity of permanent magnet used is 0.01T~0.5T in the inner-walls of duct detection means that the utility model embodiment provides, far
Less than the minimum-B configuration intensity 4T of permanent magnet used in the prior art, the permanent magnet of the utility model embodiment only can guarantee that
The internal face of Magnetizing pipeline, rather than pipeline is radially fully magnetised from the inside to the outside in pipeline.So greatly reduce metal missing
Information content acquired in sensor, and then workload and the working time of information analysis are reduced, detection efficiency is improved, so as to energy
Enough it is quickly detected stolen hole or steals stomata.Simultaneously because the magnetic field intensity of used permanent magnet is small, its volume is also smaller,
The equipment cost of the detection means is reduced to a certain extent so that the detection means energy that the utility model embodiment is provided
Regular maintenance equipment enough as oil-gas pipeline uses, and helps to find the stolen hole on oil-gas pipeline in time or steals stomata.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation for the inner-walls of duct detection means that the utility model embodiment provides；
Fig. 2 is metal missing Fundamentals of Sensors signal in the inner-walls of duct detection means that the utility model embodiment provides
Figure；
Fig. 3 is the detection signal analysis chart for the inner-walls of duct detection means that the utility model embodiment provides.
Each mark is respectively in accompanying drawing：
1. anti-ram；
2. installing plate；21. sealing cup；
3. girth joint detector；31. head rod；
4. odometer；41. mileage wheel；
5. nacelle；
6. hub；
7. support；71. supporting plate；72. the second connecting rod；
8. metal lacks sensor；81. permanent magnet；82. induction coil；
9. rear end cap joint；
10. inner-walls of duct.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
Referring to Fig. 1, Fig. 2, the utility model embodiment provides a kind of inner-walls of duct detection means, and the detection means includes
Cylindric nacelle 5, it is fixed with multiple metals along the circumferencial direction of nacelle 5 and lacks sensor 8, metal missing sensor 8 is used for root
Situation about being lacked according to the metal of inner-walls of duct 10 generates detection information,
Wherein metal missing sensor 8 includes：Magnetic field intensity is 0.01T~0.5T (tesla) permanent magnet 81, and,
At least one induction coil 82 being arranged between permanent magnet 81 and inner-walls of duct 10,
Induction coil 82 is axially arranged along pipeline.
With reference to Fig. 2, the operation principle for the inner-walls of duct detection means that the utility model embodiment is provided is as follows：
By the way that the detection means is placed in oil-gas pipeline so that detection means is defeated with the oil gas in oil-gas pipeline
Send.During detection means is with oil-gas transportation, the permanent magnet 81 in metal missing sensor 8 magnetizes the interior of oil-gas pipeline
Wall.And radially it is only capable of magnetized spot thickness because the magnetic field intensity of permanent magnet 81 is between 0.01T~0.5T, therefore in pipeline
Duct wall, but ensure that the magnetization to inner-walls of duct face.The inner-walls of duct 10 being magnetized produces induced field, the induced field
Magnetic induction line through metal missing sensor 8 in induction coil 82.When the intensity of induced field changes, induction coil
82 produce electric current so that the voltage signal at the both ends of induction coil 82 is changed, and pipe can be obtained according to the change of voltage signal
The situation of road internal face.Therefore it is understandable to be, when detection means is by the more smooth duct section of inner-walls of duct 10, sense
Obvious change will not be produced by answering the voltage signal at the both ends of coil 82；When detection means has hole by internal face, go out cash
When belonging to the pipeline of missing, obvious change, the electricity at the both ends of induction coil 82 occur for the magnetic field intensity of the induced field of inner-walls of duct 10
Pressure produces significant change, that is, realizes the identification to lack part on inner-walls of duct 10.
It will be appreciated by persons skilled in the art that when oil-gas pipeline has stolen hole or steals stomata, necessarily cause
Be present metal missing in inner-walls of duct face, therefore, can magnetize inner-walls of duct face as long as ensureing the magnetic field intensity of permanent magnet,
Without even pipeline outer wall face in the middle part of tube wall is all magnetized.
The magnetic field intensity of permanent magnet used is in the inner-walls of duct detection means provided due to the utility model embodiment
0.01T~0.5T, much smaller than the minimum-B configuration intensity 4T of permanent magnet used in the prior art.Therefore, the utility model is real
The permanent magnet for applying example only can guarantee that the internal face of Magnetizing pipeline, rather than radially fully magnetise pipeline from the inside to the outside in pipeline.Such as
The detection means that this utility model embodiment is provided greatly reduces the information content acquired in metal missing sensor 8, enters
And reduce workload and the working time of information analysis, improve detection efficiency, so as to be quickly detected stolen hole or
Steal stomata.Simultaneously because the magnetic field intensity of used permanent magnet is small, its volume is also smaller, reduces the inspection to a certain extent
Survey the equipment cost of device so that the detection means that the utility model embodiment is provided can be as the daily dimension of oil-gas pipeline
Protect equipment to use, help to find the stolen hole on oil-gas pipeline in time or steal stomata.
Judge the tool of inner-walls of duct face metal deletion condition on the voltage signal by the both ends of induction coil 82 to analyze
Body method, the utility model embodiment are not particularly limited, and are carried out according to existing pipeline detection method.
It should be noted that the inner-walls of duct detection means provided using the utility model embodiment obtains inner-walls of duct gold
After the situation for belonging to missing, it is also necessary to coordinate digging in-situ, whether the position for further verifying inner-walls of duct metal missing is robber
Oilhole steals stomata.
Wherein, the quantity for sensor 8 being lacked to metal does not make considered critical.It will be appreciated by persons skilled in the art that
In the present embodiment, the permanent magnet 81 in metal missing sensor 8 is used for Magnetizing pipeline inwall, therefore multiple metals missing sensing
When circumferencial direction of the device 8 along nacelle 5 is set, the magnetic field of multiple metal missing sensors 8 on the circumferencial direction of nacelle 5 need to be met
Cover the internal face of nacelle 5.Specifically, metal can be set to lack the quantity of sensor 8, such as 40 according to practical situations
It is individual, 50,60,70 etc..The quantity that the induction coil 82 in sensor 8 is lacked to a metal simultaneously does not do specific limit yet
It is fixed, can be 2,3,4,5 etc., circumferencial direction arrangement of multiple induction coils 82 along nacelle 5.
Further, data acquisition unit is additionally provided with nacelle 5, data acquisition unit is electrically connected with metal missing sensor 8
Connect, for receiving and storing the detection information.The detection information stored by analyze data collector, is realized to inner-walls of duct
The identification that metal lacks on 10.The connected mode that sensor 8 and data acquisition unit are wherein lacked for metal is not specifically limited,
For example with wireless connection, or the wired connection using transmission line.
Further, fixed form of the metal missing sensor 8 in the outside of nacelle 5 has a variety of, the present embodiment provide with
Lower alternative.
The support 7 for placing multiple metal missing sensors 8 is provided with nacelle 5, its medium-height trestle 7 has ring-type knot
Structure so that metal lacks circumferencial direction of the sensor 8 along nacelle 5 and fixed.
Alternatively, referring to Fig. 1, support 7 includes cylindrical section and round platform section, its middle cylindrical section one end connection nacelle 5, the other end
One end that connection round platform section is relatively large in diameter.Multiple metals missing sensors 8 are embedded in the round platform section of support 7, and along round platform section
Circumferencial direction set.And the maximum outside diameter of support 7 is less than the internal diameter of pipeline, ensures that the detection means smoothly enters oil-gas pipeline
In.
Further, in order to improve the connective stability of support 7 and nacelle 5, referring to Fig. 1, it is fixed with one end of support 7
First supporting plate 71 of ring-type, and the axial direction for being axially parallel to nacelle 5 of the first supporting plate 71.Now the first supporting plate 71 deviates from
The annular side of metal missing sensor 8 forms the mounting surface perpendicular to the axial direction of nacelle 5, and multiple the are set on the mounting surface
Two connecting rods 72, the second end of the connecting rod 72 away from supporting plate 71 is fixed on the outside curve of nacelle 5, thus by second
Connecting rod 72 and supporting plate 71 add the connective stability of annular support 7 and nacelle 5, ensure in detection means with the defeated of oil gas
During sending, the metal missing sensor 8 in support 7 is stably placed on the circumferencial direction of nacelle 5.Furthermore it is preferred that support
The external diameter of plate 71 matches with internal diameter of the pipeline, not only supporting plate 71 can just be moved axially along pipeline, while supporting plate 71
It ensure that axis and the pipeline of detection means are axially coincident so that the permanent magnet 81 in metal missing sensor 8 is to inner-walls of duct
10 carry out uniform magnetization.
In addition, when metal missing sensor 8 uses wired connection with data acquisition device, it is additionally provided with support 7
Rear end cap joint 9, it is provided for connecting the transmission line of metal missing sensor 8 and data acquisition unit on rear end cap joint 9.
Except being able to detect that in addition to the hole on inner-walls of duct 10, it is also necessary to the specific position of pipeline where determining the hole
Put.Therefore the detection means that the utility model embodiment provides also includes being fixed on the position monitoring component outside nacelle 5, position
Monitoring assembly is used for the positional information for obtaining detection means.And position monitoring component electrically connects with data acquisition unit, data acquisition
Device is additionally operable to receive and storage location information.The positional information stored thus by data acquisition unit can understand inner-walls of duct 10
There is the particular location of hole.
In order to ensure the normal operation of position monitoring component, promising position monitoring component is set to be powered in nacelle 5
Power supply.The installing plate 2 for installation site monitoring assembly is further fixed in the outside of nacelle 5 simultaneously, installing plate 2 has ring junction
Structure, it is axially parallel to the axial direction of nacelle 5.The mounting stability of position monitoring component is improved by installing plate 2.
On the specific species of position monitoring component, further, position monitoring component detects including at least two girth joint
Device 3, the girth joint detector 3 are used for the quantity for obtaining the pipeline annular weld bead that the detection means is passed through.More specifically, the ring
Weld seam detector 3 is Hall sensor, can obtain inner-walls of duct 10 according to the Strength Changes of the induced field of inner-walls of duct 10
Metamorphosis.Because conventional oil-gas pipeline length is longer, up to tens kilometers, therefore the pipeline of generally use fixed length welds successively
Connect and form.Two pipelines that are connected weld inner-walls of duct 10 it is inwardly protruding, be rough wall section, its induced field
Intensity changes, therefore when girth joint detector 3 is realized to pipeline girth weld by the change of the induced field of inner-walls of duct 10
The record of number.It is understandable to be, when detecting that inner-walls of duct 10 has hole, passed through by searching the detection means
Pipeline quantity, can the quick obtaining detection means approximate location.Wherein, in order to ensure the accurate of girth joint detector 3
Measurement, its quantity must not be less than 2,3 or 4 girth joint detectors 3 of generally use, and preferably multiple girth joints detect
Circumferencial direction of the device 3 along nacelle 5 is uniformly distributed, and ensures that the quantity of pipeline annular weld bead that detects is true and reliable.In addition, the ring
Weld seam detector 3 is fixed on installing plate 2 by head rod 31, and electrically connected with data acquisition unit, by acquired ring
Weld seam quantity is sent to data acquisition unit and stored.
Meanwhile in order to carry out more accurate positioning to detection means, the position monitoring component also includes odometer 4, inner
One end of journey meter 4 is fixed on installing plate 2, and the other end of odometer 4 is provided with mileage wheel 41, and mileage wheel 41 is axially vertical
In the axial direction of nacelle 5 so that it can be rolled along inner-walls of duct 10.In detection means course of conveying, pass through the rolling of mileage wheel 41
Moving-coil number realizes the metering to detection means traveling mileage number.
More specifically, odometer 4 includes 2, and center line symmetrical setting of 2 odometers on nacelle 5.Wherein due to
When detection means passes through bend, if when odometer 4 is located exactly at the outside of bend, the odometer 4 on the outside of bend can be caused
Larger error be present between the mileage number of record and the mileage number of detection means actual travel.It is continuous especially with detection means
Advance, during by more bend, the error is built up, and disturbs being accurately positioned for detection means.Now should be with positioned at bend
The odometer of inner side counts according to being defined.Therefore by center line symmetrical setting of 2 odometers 4 on nacelle 5, ensure in 2
It can be located at curve inner side in the presence of an odometer 4 in journey meter 4, avoid recorded detection means traveling mileage number from having larger
Error.
Further, the odometer 4 equally electrically connects with data acquisition unit, by acquired detection means traveling mileage number
Data acquisition unit is sent to be stored.
Further, for the ease of the structural stability of whole detection device, hub 6 is additionally provided with nacelle 5.Should
Hub 6 is connected with least two girth joint detector 3 and 2 odometers 4 by transmission line, concentrates girth joint detector 3 to remember
The traveling mileage information of girth joint information and odometer 4 record of record.Hub 6 is connect by a transmission line with rear end cap simultaneously
First 9 connection, and then data acquisition unit is connected, realize the electricity between girth joint detector 3 and odometer 4 and data acquisition unit
Connection.
Further, annular seal leather cup 21, sealing cup 21 are provided with its axial end face in installing plate 2
External diameter be more than or equal to pipeline internal diameter.After detection means is positioned in pipeline, the side of sealing cup 21 and pipeline
Inwall 10 is in close contact.Now the oil in pipeline, gas form different pressure differentials, and then oil, gas in the both sides of sealing cup 21
To the application of sealing cup 21 and oil, flow of air direction identical motive force, so as to drive whole detection device to be conveyed with oil, gas.
Sealing cup 21 ensure that the moving stability of detection means, avoid detection means from being rotated in pipeline.And at the end of nacelle 5
Be additionally provided with portion it is anti-ram 1, effective collision free causes to damage to detection means.Wherein preferably anti-ram 1 is arranged on detection
The preceding inlet side of device.
Below, the application method of the inner-walls of duct detection means of the utility model embodiment is made by specific detection example
Briefly introduce.
The detection means provided using the utility model embodiment, the inspection of drilling hole of oil stolen point is carried out for certain crude oil pipeline
Survey.Outer diameter tube is 813mm, wall thickness 11.9mm, discharge pressure 4.5Mpa, and detection mileage is 187.7km.In order to realize
To the magnetization in inner-walls of duct face on pipe circumference direction, 72 metal missing sensors 8 are provided with altogether in detection means.Each
The magnetic field intensity of permanent magnet in metal missing sensor 8 is 0.4T, and 4 sensings are provided with each metal missing sensor 8
Coil.The specifically used method of the detection means is as follows：
Start the detection means so that built-in power is the power supply such as girth joint detector 3, odometer 4.This is detected afterwards
Device is put into service cylinder, and rise service cylinder pressure, by serving a ball, detection means is sent into pipeline by cylinder.Detection means is in pipeline
It is admitted in main pipeline, is conveyed afterwards with gas stream in main pipeline, the detection of complete twin conduit all fronts under gas stream effect.
The data stored by data acquisition are analyzed, and find abnormal signal at one be present, referring in particular to Fig. 3, explanation
Metal missing on inner-walls of duct face herein be present.Further, by field investigation and excavation, discovery is drilling hole of oil stolen herein
Point, demonstrate the accuracy and reliability of this method and equipment.
To sum up, the inner-walls of duct structure of the detecting device that the utility model embodiment is provided is simple, easy to use, can be fast
The stolen hole or steal stomata that speed is accurately detected on pipeline.The equipment operating cost is relatively low simultaneously, suitably as oil-gas pipeline
Long term monitoring instrument.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (10)
1. a kind of inner-walls of duct detection means, the detection means includes cylindric nacelle (5), it is characterised in that in the cabin
Multiple metals being fixed with along the nacelle (5) circumferencial direction on the outside of body (5) and lacking sensor (8), the metal lacks sensor
(8) include：
Magnetic field intensity is 0.01T~0.5T permanent magnet (81), and,
At least one induction coil (82) being arranged between the permanent magnet (81) and the inner-walls of duct (10), the sensing
The center line of coil (82) is axially arranged along pipeline.
2. inner-walls of duct detection means according to claim 1, it is characterised in that be additionally provided with the nacelle (5)
Data acquisition unit,
The data acquisition unit electrically connects with metal missing sensor (8), is passed for receiving and storing the metal missing
The voltage signal of induction coil (82) both ends described in sensor (8).
3. inner-walls of duct detection means according to claim 2, it is characterised in that be provided with use in the nacelle (5)
The support (7) of sensors (8) is lacked in the multiple metals of fixation,
The support (7) has cyclic structure, and multiple metal missing sensors (8) are fixed on the cylindrical of the support (7)
On side face.
4. inner-walls of duct detection means according to claim 2, it is characterised in that the detection means also includes being fixed on
The outside position monitoring component of the nacelle (5), the position monitoring component are used for the positional information for obtaining the detection means.
5. inner-walls of duct detection means according to claim 4, it is characterised in that the position monitoring component and the number
Electrically connected according to collector.
6. inner-walls of duct detection means according to claim 5, it is characterised in that be fixed with use in the nacelle (5)
In the installing plate (2) for installing the position monitoring component, the installing plate (2) has loop configuration, and it is axially parallel to described
The axial direction of nacelle (5).
7. inner-walls of duct detection means according to claim 6, it is characterised in that the position monitoring component is included at least
The equally distributed girth joint detector (3) of 2 circumferencial directions along the nacelle (5), the girth joint detector (3) are used to obtain
The quantity of the pipeline annular weld bead of the detection means process is taken,
And the girth joint detector (3) is fixed on the installing plate (2) by head rod (31), the girth joint is visited
Device (3) is surveyed to electrically connect with the data acquisition unit.
8. inner-walls of duct detection means according to claim 6, it is characterised in that the position monitoring component includes 2
On the odometer (4) of the center line symmetrical setting of the nacelle (5),
One end of the odometer (4) is fixed on the installing plate (2), and the other end of the odometer (4) is provided with mileage
Take turns (41), the axial direction for being axially perpendicular to the nacelle (5) of the mileage wheel (41),
The odometer (4) electrically connects with the data acquisition unit.
9. inner-walls of duct detection means according to claim 6, it is characterised in that in the installing plate (2) perpendicular to it
Annular seal leather cup (21) is provided with the end face of axial direction, the external diameter of the sealing cup (21) is more than or equal to the pipeline
Internal diameter.
10. according to inner-walls of duct detection means according to any one of claims 1 to 9, it is characterised in that the inwall detection
Device includes 65~75 metal missing sensors (8), and each metal lacks the permanent magnet in sensor (8)
(81) magnetic field intensity is 0.4T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720649668.8U CN206960404U (en) | 2017-06-06 | 2017-06-06 | A kind of inner-walls of duct detection means |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720649668.8U CN206960404U (en) | 2017-06-06 | 2017-06-06 | A kind of inner-walls of duct detection means |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108584749A (en) * | 2018-06-08 | 2018-09-28 | 北京福瑶科技有限公司 | Pipeline isolation cabin cable capstan winch, cofferdam and its method for entering pipeline |
| CN109001294A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of inner wall of the pipe detection device |
-
2017
- 2017-06-06 CN CN201720649668.8U patent/CN206960404U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001294A (en) * | 2017-06-06 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of inner wall of the pipe detection device |
| CN109001294B (en) * | 2017-06-06 | 2024-01-30 | 中国石油天然气股份有限公司 | Pipeline inner wall detection device |
| CN108584749A (en) * | 2018-06-08 | 2018-09-28 | 北京福瑶科技有限公司 | Pipeline isolation cabin cable capstan winch, cofferdam and its method for entering pipeline |
| CN108584749B (en) * | 2018-06-08 | 2024-05-28 | 北京福瑶科技有限公司 | Method for entering pipeline in isolation mode |
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Effective date of registration: 20211111 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co., Ltd Address before: 100007 China Petroleum Building, No. 9, Dongzhimen North Street, Dongcheng District, Beijing Patentee before: China National Petroleum Corporation |