CN114113303B - Demagnetizing adjusting device in buried pipeline - Google Patents
Demagnetizing adjusting device in buried pipeline Download PDFInfo
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- CN114113303B CN114113303B CN202111462303.1A CN202111462303A CN114113303B CN 114113303 B CN114113303 B CN 114113303B CN 202111462303 A CN202111462303 A CN 202111462303A CN 114113303 B CN114113303 B CN 114113303B
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Abstract
The application discloses a demagnetizing and adjusting device in a buried pipeline, which comprises: the first driving module comprises a first power leather cup; the demagnetizing module is connected with the first driving module through the first connecting cylinder, and the demagnetizing module includes: the demagnetizing joint cylinder is connected with the first connecting cylinder; a magneto-resistive element including a first magneto-resistive element and a second magneto-resistive element, respectively, disposed outside the demagnetizing segment case; the permanent magnet comprises a first permanent magnet and a second permanent magnet with opposite magnetic fields, and the magnetic resistance element adjusts the magnetic field loop intensity of the permanent magnet; the magnetic conduction element comprises a first magnetic conduction element and a second magnetic conduction element, and the first magnetic conduction element and the second magnetic conduction element transmit a reverse magnetic field generated by the permanent magnet to the pipe wall; the second driving module comprises a second power leather cup, the demagnetizing module is driven to run in the buried pipeline by generating pressure difference between the first power leather cup and the second power leather cup, and the magnetic loop generated by the demagnetizing module is utilized to eliminate the residual magnetism of the pipeline, so that the technical problem that demagnetizing equipment which is easy to operate and has adjustable demagnetizing strength is solved.
Description
Technical Field
The application relates to the technical field related to pipeline demagnetization, in particular to a buried pipeline internal demagnetization adjusting device.
Background
When the oil gas long-distance pipeline is subjected to magnetic pipe cleaning operation or magnetic leakage internal detection operation, as the magnetic pipe cleaner and the magnetic leakage detector are provided with strong magnets, under the action of the internal pressure of the pipeline, the equipment forwards moves along the pipeline to enable the pipe wall to reach a saturated magnetization state, so that the whole long-distance pipeline is seriously magnetized. After the pipe cleaning or detection is finished, a part of residual magnetism can remain in the pipeline, and the residual magnetism can influence the pipeline welding, cause serious magnetic blow-out phenomenon, greatly influence the welding quality, and influence the precision of a subsequent nondestructive detection method, such as X-ray detection, magnetic powder detection, magnetic leakage detection and the like.
The current demagnetizing technology mainly uses a magnetic neutralization technology to apply an external magnetic field to neutralize the magnetic field of the pipeline during operation. Basically, the magnetic intensity in the pipeline is estimated in advance, and then the corresponding applied magnetic field demagnetizing parameters are set in a matching way, but the residual magnetism is different due to different permanent magnet ferromagnetic performance characteristic parameters adopted for pigging or detection. For the occasion with serious magnetization, the residual magnetic field intensity in the crack is higher, the difficulty of selecting proper demagnetizing parameters to realize demagnetization is increased, and the proper demagnetizing intensity is selected to have a vital effect on realizing good demagnetizing effect.
In the process of realizing the technical scheme of the embodiment of the application, the application discovers that the technology at least has the following technical problems:
the technical problems of the prior art are that demagnetizing equipment which is easy to operate and has adjustable demagnetizing intensity is lacking.
Disclosure of Invention
The embodiment of the application solves the technical problems of the prior art that demagnetizing equipment which is easy to operate and has adjustable demagnetizing strength is lacking by providing the demagnetizing adjusting device in the buried pipeline. The two magnetic resistance elements are respectively connected with the two permanent magnets in a contact way through the driving devices of the two driving modules, the magnetic field intensity is dynamically regulated through the magnetic resistance elements, the reverse magnetic field is transmitted to the pipe wall through the magnetic conduction elements, the pipe magnetic field is further eliminated, and the elements are connected through the plurality of cylinders. The device can dynamically adjust the magnetic field intensity through the magnetic resistance element, and can adjust the demagnetizing parameters according to actual scenes, so that the technical effect of flexibly adjusting the demagnetizing intensity is achieved.
The embodiment of the application provides an in-buried pipeline demagnetizing and adjusting device, which is characterized by comprising: the first driving module comprises a first power leather cup; the demagnetizing module, the one end of demagnetizing module with first drive module passes through first connection barrel and is connected, wherein, demagnetizing module includes: the demagnetizing joint cylinder body is connected with the first connecting cylinder body; the magneto-resistive element is in contact connection with the demagnetizing joint cylinder body and comprises a first magneto-resistive element and a second magneto-resistive element, and the first magneto-resistive element and the second magneto-resistive element are respectively and uniformly covered on the outer wall of the demagnetizing joint cylinder body; the permanent magnet is in contact connection with the magnetic resistance element, the magnetic resistance element adjusts the magnetic field loop intensity of the permanent magnet, the permanent magnet comprises a first permanent magnet and a second permanent magnet, the first permanent magnet is uniformly covered on the outer side of the first magnetic resistance element, the second permanent magnet is uniformly covered on the outer side of the second magnetic resistance element, and the first permanent magnet and the second permanent magnet have opposite magnetic fields; the magnetic conduction element comprises a first magnetic conduction element and a second magnetic conduction element, the first magnetic conduction element is uniformly covered on the outer side of the first permanent magnet, the second magnetic conduction element is uniformly covered on the outer side of the second permanent magnet, the inner side of the magnetic conduction element is in contact with the permanent magnet, the outer side of the magnetic conduction element is in contact with the pipe wall of the buried pipeline, and a reverse magnetic field generated by the permanent magnet is transmitted to the pipe wall to reduce residual magnetism of the pipeline; the second driving module is connected with the other end of the demagnetizing module through a second connecting cylinder body and comprises a second power leather cup, wherein the second power leather cup is matched with the first power leather cup, and the demagnetizing module is driven to run in the buried pipeline through pressure difference generated between the first power leather cup and the second power leather cup.
Preferably, the first driving module further includes: the first driving cylinder body is connected with the first connecting cylinder body through the first power leather cup bolt; the first spring piece is arranged at one end, far away from the demagnetizing module, of the first driving cylinder body; the first support wheel set is uniformly arranged on the outer wall of the first driving cylinder body and connected with the first spring piece on the axial surface of the first driving cylinder body, and the first support wheel set is tightly attached to the inner wall of the buried pipeline to support and drive the in-buried pipeline demagnetizing and adjusting device to automatically operate in the buried pipeline.
Preferably, the first driving module further includes: the anti-collision head is arranged at the center of the top end of the first driving module and used for preventing the buried pipeline inner demagnetizing and adjusting device from being damaged due to collision in the operation process.
Preferably, the second driving module further includes: the second driving cylinder is connected with the second connecting cylinder through the second power leather cup bolt; the second spring piece is arranged at one end, far away from the demagnetizing module, of the second driving barrel body; the second support wheel sets are uniformly arranged on the outer wall of the second driving cylinder body and connected with the second spring piece on the axial surface of the second driving cylinder body, and the second support wheel sets are symmetrically arranged with the first support wheel sets and are tightly attached to the inner wall of the buried pipeline.
Preferably, the demagnetizing module further includes: the support leather cup comprises a first support leather cup and a second support leather cup which are respectively arranged on the outer side of the demagnetizing section cylinder in a surrounding mode, are positioned at two end portions of the demagnetizing section cylinder, and are connected with the first connecting cylinder through bolts.
Preferably, the demagnetizing section cylinder is cylindrical or polygonal, and the shapes of the magnetic conductive element, the permanent magnet and the magnetic resistance element are matched with the demagnetizing section cylinder.
Preferably, the magnetic conductive element has elasticity and deformation and can be fully contacted with the pipe wall of the buried pipeline, and the magnetic conductive element comprises a lining iron and steel brush form and a lining iron and steel sheet form.
Preferably, the magneto-resistive element is a paramagnetic substance.
Preferably, the degree of demagnetization of the magneto-resistive element is related to the size of the magneto-resistive element.
Preferably, the demagnetizing section cylinder is made of magnetic conductive materials, and the demagnetizing section cylinder, the magnetic resistance element, the permanent magnet and the magnetic conductive element form a closed magnetic field loop.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
the embodiment of the application provides an in-buried pipeline demagnetizing and adjusting device, which is characterized by comprising: the first driving module comprises a first power leather cup; the demagnetizing module, the one end of demagnetizing module with first drive module passes through first connection barrel and is connected, wherein, demagnetizing module includes: the demagnetizing joint cylinder body is connected with the first connecting cylinder body; the magneto-resistive element is in contact connection with the demagnetizing joint cylinder body and comprises a first magneto-resistive element and a second magneto-resistive element, and the first magneto-resistive element and the second magneto-resistive element are respectively and uniformly covered on the outer wall of the demagnetizing joint cylinder body; the permanent magnet is in contact connection with the magnetic resistance element, the magnetic resistance element adjusts the magnetic field loop intensity of the permanent magnet, the permanent magnet comprises a first permanent magnet and a second permanent magnet, the first permanent magnet is uniformly covered on the outer side of the first magnetic resistance element, the second permanent magnet is uniformly covered on the outer side of the second magnetic resistance element, and the first permanent magnet and the second permanent magnet have opposite magnetic fields; the magnetic conduction element comprises a first magnetic conduction element and a second magnetic conduction element, the first magnetic conduction element is uniformly covered on the outer side of the first permanent magnet, the second magnetic conduction element is uniformly covered on the outer side of the second permanent magnet, the inner side of the magnetic conduction element is in contact with the permanent magnet, the outer side of the magnetic conduction element is in contact with the pipe wall of the buried pipeline, and a reverse magnetic field generated by the permanent magnet is transmitted to the pipe wall to reduce residual magnetism of the pipeline; the device comprises a first driving module, a second driving module and a demagnetizing module, wherein the other end of the first driving module is connected with the other end of the demagnetizing module through a first connecting cylinder, the first driving module comprises a first power leather cup, the first power leather cup is matched with the first power leather cup, the demagnetizing module is driven to operate in a buried pipeline through pressure difference generated between the first power leather cup and the first power leather cup, the magnetic field intensity of the device can be dynamically regulated through a magnetic resistance element, demagnetizing parameters can be regulated according to actual scenes, and the technical effect of flexibly regulating the demagnetizing intensity is achieved.
Drawings
In order to more clearly illustrate the application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of a system structure of a demagnetizing device in a buried pipeline according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the distribution of permanent magnet ring segments provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of a permanent magnet cube distribution provided by an embodiment of the present application;
FIG. 4 is a schematic front view of a magnetic conductive element according to an embodiment of the present application using a lined iron+steel brush;
FIG. 5 is a schematic top view of a magnetic conductive element according to an embodiment of the present application using a lined iron + steel brush;
FIG. 6 is a schematic front view of a magnetic conductive element according to an embodiment of the present application using a liner and a steel sheet;
FIG. 7 is a schematic top view of a magnetically permeable element according to an embodiment of the present application using a liner and a steel sheet;
FIG. 8 is a schematic diagram of an aluminum plate of the required size for demagnetization according to an embodiment of the present application;
fig. 9 is a schematic diagram of another aluminum plate of desired dimensions for demagnetization in accordance with an embodiment of the present application.
Reference numerals illustrate: the first driving module 1, the first power cup 11, the anti-collision head 12, the first driving cylinder 13, the first spring piece 14, the first supporting roller set 15, the demagnetizing module 2, the demagnetizing section cylinder 21, the first magnetic resistance element 221, the second magnetic resistance element 222, the first permanent magnet 231, the second permanent magnet 232, the first magnetic conduction element 241, the second magnetic conduction element 242, the first supporting cup 251, the second supporting cup 252, the second driving module 3, the second power cup 32, the second driving cylinder 33, the second spring piece 34, the second supporting roller set 35, the first connecting cylinder 4, the second connecting cylinder 5, the aluminum plate 2611 and the other aluminum plate 2622.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, a detailed description of specific embodiments accompanied with figures is provided below. In the following description, numerous details are set forth in order to provide a thorough understanding of the present application. The application may be embodied in many other forms than described herein without departing from the spirit or scope of the application as defined in the following claims.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the embodiments of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Technical conception
The application provides a buried pipeline inner demagnetizing adjusting device, which solves the technical problems of lack of demagnetizing equipment which is easy to operate and adjustable in demagnetizing intensity in the prior art.
Aiming at the technical problems, the technical scheme provided by the application has the following overall thought:
the first driving module comprises a first power leather cup; the demagnetizing module, the one end of demagnetizing module with first drive module passes through first connection barrel and is connected, wherein, demagnetizing module includes: the demagnetizing joint cylinder body is connected with the first connecting cylinder body; the magneto-resistive element is in contact connection with the demagnetizing joint cylinder body and comprises a first magneto-resistive element and a second magneto-resistive element, and the first magneto-resistive element and the second magneto-resistive element are respectively and uniformly covered on the outer wall of the demagnetizing joint cylinder body; the permanent magnet is in contact connection with the magnetic resistance element, the magnetic resistance element adjusts the magnetic field loop intensity of the permanent magnet, the permanent magnet comprises a first permanent magnet and a second permanent magnet, the first permanent magnet is uniformly covered on the outer side of the first magnetic resistance element, the second permanent magnet is uniformly covered on the outer side of the second magnetic resistance element, and the first permanent magnet and the second permanent magnet have opposite magnetic fields; the magnetic conduction element comprises a first magnetic conduction element and a second magnetic conduction element, the first magnetic conduction element is uniformly covered on the outer side of the first permanent magnet, the second magnetic conduction element is uniformly covered on the outer side of the second permanent magnet, the inner side of the magnetic conduction element is in contact with the permanent magnet, the outer side of the magnetic conduction element is in contact with the pipe wall of the buried pipeline, and a reverse magnetic field generated by the permanent magnet is transmitted to the pipe wall to eliminate residual magnetism of the pipeline; the second driving module is connected with the other end of the demagnetizing module through a second connecting cylinder, and comprises a second power leather cup, wherein the second power leather cup is matched with the first power leather cup, and the demagnetizing module is driven to run in the buried pipeline by generating pressure difference between the first power leather cup and the second power leather cup, so that demagnetizing parameters can be adjusted according to actual scenes, and the technical effect of flexibly adjusting demagnetizing strength is achieved.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
As shown in fig. 1, an embodiment of the present application provides an in-buried pipeline demagnetization adjusting apparatus, including: a first driving module 1, a demagnetizing module 2 and a second driving module 3.
The first driving module 1 comprises a first power leather cup 11;
further, the first driving module 1 further includes:
the first driving cylinder 13 is connected with the first connecting cylinder 4 through the first power leather cup 11 through bolts;
a first spring piece 14, wherein the first spring piece 14 is arranged at one end of the first driving cylinder body far away from the demagnetizing module 2;
the first support wheelset 15, first support wheelset 15 evenly sets up on the outer wall of first drive barrel 13, with first drive barrel 13 axial surface first spring leaf 14 is connected, just, first support wheelset 15 closely laminates with buried pipeline's inner wall, supports and drives buried pipeline internal demagnetizing adjustment device moves in buried pipeline.
Further, the first driving module 1 further includes:
an anti-collision head 12, the anti-collision head 12 is arranged at the top center of the first driving module 1 and is used for preventing the demagnetization adjusting device in the buried pipeline from being damaged due to collision in the operation process.
Specifically, the first driving cylinder 13 is connected with the first connecting cylinder 4 through a first power leather cup 11 through bolts, and is used for fixing each element of the first driving module 1; the first spring piece 14 is arranged at one end of the first driving cylinder body far away from the demagnetizing module 2; the first supporting wheel set 15 is uniformly arranged by being connected with the first spring pieces 14 on the axial surface of the outer wall of the first driving cylinder 13, the number of the first supporting wheel set 15 is the same as that of the first spring pieces 14, the first supporting wheel set 15 can be tightly attached to the inner wall of the buried pipeline through the connection relation, and then the demagnetizing device can be stably supported at the central position to stably run.
One end of the demagnetizing module 2 is connected with the first driving module 1 through a first connecting cylinder 4, wherein the demagnetizing module 2 comprises:
a demagnetizing section cylinder 21, wherein the demagnetizing section cylinder 21 is connected with the first connecting cylinder 4; a magneto-resistive element 22, wherein the magneto-resistive element 22 is in contact connection with the demagnetizing segment cylinder 21, the magneto-resistive element 22 comprises a first magneto-resistive element 221 and a second magneto-resistive element 222, and the first magneto-resistive element 221 and the second magneto-resistive element 222 are respectively uniformly covered on the outer wall of the demagnetizing segment cylinder 21; a permanent magnet 23, wherein the permanent magnet 23 is in contact connection with the magneto-resistive element 22, the magneto-resistive element 22 adjusts the magnetic field loop strength of the permanent magnet 23, the permanent magnet 23 comprises a first permanent magnet 231 and a second permanent magnet 232, the first permanent magnet 231 is uniformly covered on the outer side of the first magneto-resistive element 221, the second permanent magnet 232 is uniformly covered on the outer side of the second magneto-resistive element 222, and the first permanent magnet 231 and the second permanent magnet 232 have opposite magnetic fields; the magnetic conduction element 24, the magnetic conduction element 24 includes a first magnetic conduction element 241 and a second magnetic conduction element 242, the first magnetic conduction element 241 is uniformly covered on the outer side of the first permanent magnet 231, the second magnetic conduction element 242 is uniformly covered on the outer side of the second permanent magnet 232, wherein the inner side of the magnetic conduction element 24 is in contact with the permanent magnet 23, the outer side is in contact with the pipe wall of the buried pipe, and the reverse magnetic field generated by the permanent magnet 23 is transmitted to the pipe wall to reduce the residual magnetism of the pipe.
Further, the demagnetizing module 2 further includes: the support cup 25, the support cup 25 includes a first support cup 251 and a second support cup 252, which are respectively disposed on the outer side of the demagnetizing section cylinder 21, are located at two ends of the demagnetizing section cylinder 21, and are connected with the first connection cylinder 4 through bolts.
Specifically, the demagnetizing segment cylinder 21 is connected to the first connecting cylinder 4 by bolts, and is used to fix a plurality of elements of the demagnetizing module; the magneto-resistive elements 22 include a first magneto-resistive element 221 and a second magneto-resistive element 222, and are in contact connection with the demagnetizing section cylinder 21, and a plurality of groups of magneto-resistive elements 22 can be provided, the demagnetizing intensity of the demagnetizing module 2 can be adjusted by the magneto-resistive elements 22, and the demagnetizing intensity can be controlled by selecting magneto-resistive elements 22 with different specifications; the permanent magnet 23 includes a first permanent magnet 231 and a second permanent magnet 232, the first permanent magnet 231 is uniformly coated on the outer side of the first magneto-resistive element 221, the second permanent magnet 232 is uniformly coated on the outer side of the second magneto-resistive element 222, and the magnetic properties of the first permanent magnet 231 and the second permanent magnet 232 are opposite, preferably: the first permanent magnet 231 has an outward S pole and an inward N pole, and the second permanent magnet 232 has a magnetization direction opposite to that of the first permanent magnet 231 and an outward N pole and an inward S pole. The pipeline demagnetizing device comprises a front permanent magnet and a rear permanent magnet which are in a magnetic saturation state, wherein the first permanent magnet 231 and the second permanent magnet 232 are opposite in magnetism and are used for providing a reverse magnetic field required by the demagnetizing device to demagnetize the pipeline; the permanent magnet 23 is used to generate demagnetizing field circuits, the number of which is the same as that of the magnetoresistive elements 22; the magnetic conduction element 24 comprises a first magnetic conduction element 241 and a second magnetic conduction element 242, wherein the first magnetic conduction element 241 is uniformly covered on the outer side of the first permanent magnet 231, the second magnetic conduction element 242 is uniformly covered on the outer side of the second permanent magnet 232 and is a magnetic conduction medium between the permanent magnet 23 and a pipeline, the magnetic conduction element 24 has certain elasticity and deformation, can be fully contacted with the pipeline wall, increases the pipeline magnetization efficiency, plays a certain supporting role and is mainly used for guiding out a demagnetizing magnetic field to the inner wall of the pipeline to realize demagnetization, and the quantity of the demagnetizing magnetic fields are the same; the supporting cup 25 comprises a first supporting cup 251 and a second supporting cup 252, which are respectively arranged on the outer side of the demagnetizing section cylinder 21 in a surrounding manner and are tightly attached to the inner wall of the pipeline for supporting the whole demagnetizing section cylinder 21. The demagnetizing section cylinder 21, the magnetic conduction element 24, the magnetic resistance element 22 and the permanent magnet 23 form a closed magnetic field loop, the first driving module 1 and the second driving module 3 are used for providing running power of the whole device in a pipeline, the demagnetizing device is guaranteed to automatically run in the pipeline, the demagnetizing effect on the pipeline wall is achieved, the control of the demagnetizing field intensity can be achieved by selecting the magnetic resistance elements 22 with different specifications, the technical effect that parameters of the demagnetizing field can be regulated is achieved, and the regulating mode is simpler and the feasibility is improved because the parameters are regulated only by the magnetic resistance elements 22.
The second driving module 3 is connected with the other end of the demagnetizing module 2 through a second connecting cylinder 5, the second driving module 3 comprises a second power leather cup 32, the second power leather cup 32 is matched with the first power leather cup 11, and the demagnetizing module 2 is driven to run in the buried pipeline through pressure difference generated between the first power leather cup 11 and the second power leather cup 32.
Further, the second driving module 3 further includes:
the second driving cylinder 33, wherein the second driving cylinder 33 and the second connecting cylinder 5 are connected through the second power leather cup 32 through bolts;
a second spring piece 34, wherein the second spring piece 34 is arranged at one end of the second driving barrel 33 away from the demagnetizing module 2;
the second support wheel sets 35, the second support wheel sets 35 are evenly arranged on the outer wall of the second driving cylinder 33, are connected with the second spring piece 34 on the axial surface of the second driving cylinder 33, and the second support wheel sets 35 and the first support wheel sets 15 are symmetrically arranged and closely attached to the inner wall of the buried pipeline.
Specifically, the second driving cylinder 33 is connected with the second connecting cylinder 5 through the second power leather cup 32 through bolts, and is used for fixing each element of the second driving module 3; the second spring piece 34 is arranged at one end of the second driving barrel 33 far away from the demagnetizing module 2, the second supporting wheel sets 35 are uniformly arranged on the outer wall of the second driving barrel 33 and are connected with the second spring pieces 34 on the axial surface of the second driving barrel 33, the number of the second spring pieces is the same as that of the second spring pieces 34, the second supporting wheel sets 35 can be tightly attached to the inner wall of a buried pipeline through the second spring pieces 34 and the second supporting wheel sets 35, and the second supporting wheel sets 35 and the first spring pieces 14 and the first supporting wheel sets 15 act together, so that the demagnetizing device can be stably supported at the central position to run stably.
Further, the first power leather cup 11 is matched with the second power leather cup 32, and the demagnetizing adjusting device in the buried pipeline is pushed to move by pressure difference generated by the medium conveyed in the pipe; the first connecting cylinder 4 is used for connecting one end of the demagnetizing module 2, the second driving module 3 is used for connecting the other end of the demagnetizing module 2, and then the connection of the first driving module 1, the demagnetizing module 2 and the second driving module 3 is realized, and the fixing mode is preferably that the bolts are used for connection and fixing.
Furthermore, the power leather cups 11 and 32 and the anti-collision head 12 can be made of polyurethane; the driving cylinders 13 and 33 are made of magnetic conductive materials and can be made of low carbon steel. The support wheelsets 15 and 35 may be made of stainless steel for supporting the entire demagnetizing device.
Further, the demagnetizing segment cylinder 21 is cylindrical or polygonal, and the shapes of the magnetic conductive element 24, the permanent magnet 23, and the magnetoresistive element 22 are matched with the demagnetizing segment cylinder 21.
Specifically, the shape of the demagnetizing segment cylinder 21 has two embodiments:
case 1: as shown in fig. 2, the demagnetizing section cylinder 21 in the demagnetizing circuit can be processed into a cylinder, and the magnetic conductive element 24, the permanent magnet 23 and the magnetic resistance element 22 all adopt annular parts, so that the generated reverse magnetic field can cover the pipeline area in 360 degrees and avoid missing any area.
Case 2: as shown in fig. 3, the demagnetizing segment cylinder 21 is polygonal, the shapes of the magnetic conductive element 24, the permanent magnet 23, the magneto-resistive element 22 and the demagnetizing segment cylinder 21 are rectangular plate members, and the strong magnetic field formed by the plurality of permanent magnets can cover the whole circumferential area of the pipeline, thereby improving the applicability.
Further, the magnetic conductive element 24 has elasticity and deformation, and can be fully contacted with the pipe wall of the buried pipe.
Specifically, the magnetic conductive element 24 has certain elasticity and deformation, can be fully contacted with the pipe wall, increases the magnetization efficiency of the pipe, and also plays a certain supporting role.
Further, the magnetically permeable element 24 includes a form of a lined iron plus steel brush, a form of a lined iron plus steel sheet.
Specifically:
case 1: as shown in fig. 4 and 5, the magnetic conductive element 24 is preferably in the form of a lined steel brush, and the dense steel brush clusters are adhered to the lined steel plate by high-strength glue to increase the fixing strength.
Case 2: as shown in fig. 6 and 7, the magnetic conductive element 24 is preferably in the form of a lining iron and steel sheet, and the dense steel sheet is adhered to the lining iron steel sheet through high-strength glue, so that the fixing strength is ensured.
Further, the magneto-resistive element 22 is a paramagnetic substance.
Further, the degree of demagnetization of the magneto-resistive element 22 is related to the size of the magneto-resistive element 22.
Specifically, the magneto-resistive element 22 may employ a paramagnetic substance, and an exemplary: aluminum plates, magnesium plates, etc., and further, the magneto-resistive element 22 may be made of plates with different dimensions to achieve different degrees of demagnetization, where the plates with different dimensions are calibrated for the degree of demagnetization. Exemplary: before the pipeline demagnetizing operation, the initial magnetic field intensity at a certain pipeline part is Br, and according to the calibration result, aluminum plates 2611 and 2621 with the dimensions shown in FIG. 8 are used as magnetic resistance elements; if the initial magnetic field strength at the part is 0.5 times Br, an aluminum plate 2612 and another aluminum plate 2622 of the dimensions shown in fig. 9 are used as magneto-resistive elements according to the calibration result. The demagnetizing field intensity is adjusted by selecting different specifications of the magnetoresistive element 22.
Further, the demagnetizing segment cylinder 21 is made of a magnetic conductive material, and the demagnetizing segment cylinder 21, the magneto-resistive element 22, the permanent magnet 23, and the magnetic conductive element 24 form a closed magnetic field loop.
Specifically, the demagnetizing segment cylinder 21 is made of a magnetically conductive material (illustratively, may be made of low carbon steel), and forms a closed magnetic field loop with the magnetoresistive element 22, the permanent magnet 23, and the magnetically conductive element 24 to provide a demagnetizing field.
Other embodiments than those described are possible to achieve the same technical effects and are within the scope of the application.
Example 2
In order to more clearly explain the technical scheme of the in-buried pipeline demagnetizing and adjusting device, the embodiment of the application provides a using method of the in-buried pipeline demagnetizing and adjusting device, which comprises the following steps:
specifically, the technical problems that demagnetizing equipment which is easy to operate and has adjustable demagnetizing intensity exists in the prior art are solved, when demagnetizing operation is carried out, a demagnetizing device enters a pipeline from a starting station of a demagnetizing pipeline, is pushed by a conveying medium in the pipeline, automatically operates in the pipeline to carry out pipeline demagnetizing operation, and is taken out from the ending station of the demagnetizing pipeline after the demagnetizing operation is completed. The demagnetizing device consists of a first driving module 1, a second driving module 3 and a demagnetizing module 2, wherein the first driving module 1 is provided with a first power leather cup 11, the second driving module 3 is provided with a second power leather cup 32, and the device is driven to automatically walk in a pipeline by means of pressure difference generated by conveying media in the pipeline; the demagnetizing module 2 demagnetizes the pipeline with residual magnetism by means of a reverse magnetic field generated by a closed magnetic field loop formed by the demagnetizing section cylinder 21, the magnetic resistance element 22, the permanent magnet 23 and the magnetic conduction element 24.
For the oil gas long-distance pipeline, the demagnetizing device can be a single device which is pulled by pressure in the pipeline to advance, and can also be used as an accessory device which is pulled at the rear end of a pipe cleaner, a geometric detector or an inertial mapping detector, so that the pipeline demagnetizing operation can be completed together while the conventional pipe cleaning, geometric detection and inertial mapping operation are carried out.
The technical scheme provided by the application has at least the following technical effects or advantages:
the embodiment of the application solves the technical problems of the prior art that demagnetizing equipment which is easy to operate and has adjustable demagnetizing strength is lacking by providing the demagnetizing adjusting device in the buried pipeline. The two magnetic resistance elements are respectively connected with the two permanent magnets in a contact way through the driving devices of the two driving modules, the magnetic field intensity is dynamically regulated through the magnetic resistance elements, the reverse magnetic field is transmitted to the pipe wall through the magnetic conduction elements, the pipe magnetic field is further eliminated, and the elements are connected through the plurality of cylinders. The device can dynamically adjust the magnetic field intensity through the magnetic resistance element, and can adjust the demagnetizing parameters according to actual scenes, so that the technical effect of flexibly adjusting the demagnetizing intensity is achieved.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is intended to be construed as including the preferred embodiment and all such variations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the embodiments of the application. Thus, if such modifications and variations of the present application fall within the scope of the present application and the equivalent techniques thereof, the present application is also intended to include such modifications and variations.
Claims (10)
1. An in-buried pipeline demagnetizing adjustment device, characterized in that the in-buried pipeline demagnetizing adjustment device comprises:
the first driving module comprises a first power leather cup;
the demagnetizing module, the one end of demagnetizing module with first drive module passes through first connection barrel and is connected, wherein, demagnetizing module includes:
the demagnetizing joint cylinder body is connected with the first connecting cylinder body;
the magneto-resistive element is in contact connection with the demagnetizing joint cylinder body and comprises a first magneto-resistive element and a second magneto-resistive element, and the first magneto-resistive element and the second magneto-resistive element are respectively and uniformly covered on the outer wall of the demagnetizing joint cylinder body;
the permanent magnet is in contact connection with the magnetic resistance element, the magnetic resistance element adjusts the magnetic field loop intensity of the permanent magnet, the permanent magnet comprises a first permanent magnet and a second permanent magnet, the first permanent magnet is uniformly covered on the outer side of the first magnetic resistance element, the second permanent magnet is uniformly covered on the outer side of the second magnetic resistance element, and the first permanent magnet and the second permanent magnet have opposite magnetic fields;
the magnetic conduction element comprises a first magnetic conduction element and a second magnetic conduction element, the first magnetic conduction element is uniformly covered on the outer side of the first permanent magnet, the second magnetic conduction element is uniformly covered on the outer side of the second permanent magnet, the inner side of the magnetic conduction element is in contact with the permanent magnet, the outer side of the magnetic conduction element is in contact with the pipe wall of the buried pipeline, and a reverse magnetic field generated by the permanent magnet is transmitted to the pipe wall to eliminate residual magnetism of the pipeline;
the second driving module is connected with the other end of the demagnetizing module through a second connecting cylinder body and comprises a second power leather cup;
the second power leather cup is matched with the first power leather cup, the demagnetizing module is driven to run in the buried pipeline through pressure difference generated between the first power leather cup and the second power leather cup, and the demagnetizing field intensity is adjusted through selecting different specifications of the magnetic resistance elements.
2. The in-conduit demagnetization adjustment apparatus of claim 1 wherein the first drive module further comprises:
the first driving cylinder body is connected with the first connecting cylinder body through the first power leather cup bolt;
the first spring piece is arranged at one end, far away from the demagnetizing module, of the first driving cylinder body;
the first support wheel set is uniformly arranged on the outer wall of the first driving cylinder body and connected with the first spring piece on the axial surface of the first driving cylinder body, and the first support wheel set is tightly attached to the inner wall of the buried pipeline to support and drive the in-buried pipeline demagnetizing and adjusting device to run in the buried pipeline.
3. The in-conduit demagnetization adjustment apparatus of claim 2 wherein the first drive module further comprises:
the anti-collision head is arranged at the center of the top end of the first driving module and used for preventing the buried pipeline inner demagnetizing and adjusting device from being damaged due to collision in the operation process.
4. The in-conduit demagnetization adjustment apparatus of claim 2 wherein the second drive module further comprises:
the second driving cylinder is connected with the second connecting cylinder through the second power leather cup bolt;
the second spring piece is arranged at one end, far away from the demagnetizing module, of the second driving barrel body;
the second support wheel sets are uniformly arranged on the outer wall of the second driving cylinder body and connected with the second spring piece on the axial surface of the second driving cylinder body, and the second support wheel sets are symmetrically arranged with the first support wheel sets and are tightly attached to the inner wall of the buried pipeline.
5. The in-conduit demagnetizing adjustment device of claim 1, wherein the demagnetizing module further comprises:
the support leather cup comprises a first support leather cup and a second support leather cup which are respectively arranged on the outer side of the demagnetizing section cylinder in a surrounding mode, are positioned at two end portions of the demagnetizing section cylinder, and are connected with the first connecting cylinder through bolts.
6. The in-pipe demagnetizing and adjusting device according to claim 1, wherein the demagnetizing segment cylinder is cylindrical or polygonal, and the shapes of the magnetic conductive element, the permanent magnet and the magnetic resistance element are matched with the demagnetizing segment cylinder.
7. The in-conduit demagnetizing and regulating device of claim 1, wherein the magnetically permeable element has elasticity and deformation to be in sufficient contact with the wall of the buried conduit, wherein the magnetically permeable element comprises a lining-plus-steel brush form, a lining-plus-steel sheet form.
8. The in-conduit demagnetizing control device of claim 1, wherein said magnetoresistive element is a paramagnetic substance.
9. The in-conduit demagnetizing adjustment device of claim 1, wherein the degree of demagnetization of the magnetoresistive element is related to the size of the magnetoresistive element.
10. The device for demagnetizing and adjusting buried pipeline according to claim 1, wherein the demagnetizing section cylinder is made of magnetic conductive material, and the demagnetizing section cylinder, the magnetic resistance element, the permanent magnet and the magnetic conductive element form a closed magnetic field loop.
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| CN202111462303.1A CN114113303B (en) | 2021-12-02 | 2021-12-02 | Demagnetizing adjusting device in buried pipeline |
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