CN115822473B - Tubular column elevator structure - Google Patents
Tubular column elevator structure Download PDFInfo
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- CN115822473B CN115822473B CN202211581865.2A CN202211581865A CN115822473B CN 115822473 B CN115822473 B CN 115822473B CN 202211581865 A CN202211581865 A CN 202211581865A CN 115822473 B CN115822473 B CN 115822473B
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- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The invention discloses a tubular column elevator structure, which comprises a plurality of elevator bodies and a telescopic mechanism; the plurality of elevator bodies are sequentially connected in series to form an annular structure, and any two adjacent elevator bodies in the annular structure are connected in a sliding manner; the telescopic mechanism is connected with at least two elevator bodies to drive and change the aperture of the annular structure; the annular structure comprises four elevator bodies, the periphery of the annular structure is circular, and the inside of the annular structure is square hollow; the central angle corresponding to each elevator body is 90 degrees, the telescopic mechanism comprises at least two electromagnets, one end of each electromagnet is an arc-shaped end, and the arc-shaped end is connected with the outside of each elevator body; the other end of the electromagnet is connected with a driving piece, and the driving piece drives the electromagnet to move. According to the invention, no power is required to be configured on the elevator, no matter the elevator rotates to any position around the central axis, the elevator bodies can be separated or attached under the action of external force so as to realize the opening and closing of the elevator, and the elevator is simple in structure and convenient to operate.
Description
Technical Field
The invention belongs to the technical field of underground operation tubular column lifting equipment, and particularly relates to a tubular column elevator structure.
Background
Downhole operations are one of the major components of oil and gas field production technology, where most tasks are accomplished by tripping the string. The elevator used in the current tubular column tripping operation process mainly has two forms: firstly, a traditional elevator which needs to be opened and closed manually; and secondly, an automatic elevator driven by hydraulic or electric force is used. The former is difficult to realize remote operation in the structural form, and an operator is required to keep close distance with the elevator and work at high altitude, so that the labor intensity and the potential safety hazard are high; the latter causes the elevator to be complex and heavy in structure, and requires the configuration of hydraulic lines or cables, which is not only costly, but also requires specialized personnel for maintenance.
In order to reduce the cost, many tubular column tripping operation processes only adopt the simplest steel wire rope lifting mode to hang the elevator, and the elevator can rotate around the tubular column and cannot be positioned accurately. If the traditional elevator is still opened, the control difficulty and cost are increased for remote operation or automation.
Therefore, it is necessary to provide an unpowered elevator with a simple structure to overcome the defects of the prior art and provide a key tool with low cost for unmanned and automatic lifting and lowering of a tubular column.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a tubular column elevator structure so as to solve the problems of complex structure and high cost of the conventional elevator.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a tubular column elevator structure comprises a plurality of elevator bodies and a telescopic mechanism; the plurality of elevator bodies are sequentially connected in series to form an annular structure, and any two adjacent elevator bodies in the annular structure are connected in a sliding manner; the telescopic mechanism is connected with at least two elevator bodies to drive and change the aperture of the annular structure.
Further, the annular structure comprises four elevator bodies, the four elevator bodies form an annular structure, the periphery of the annular structure is circular, and the inside of the annular structure is square hollow; the central angle corresponding to each elevator body is 90 degrees.
Further, the lower part of the elevator body is an arc-shaped spherical surface, and the four arc-shaped spherical surfaces are closed to form an opening in a hemispherical shape.
Further, two adjacent elevator bodies are connected in a sliding manner through a sliding pin shaft.
Further, a fixing hole and a sliding hole are formed in the elevator body, and the fixing hole and the sliding hole are perpendicular to each other; the fixed hole of an elevator body is fixedly connected with one end of a sliding pin shaft, and the other end of the sliding pin shaft is in sliding connection with the sliding hole.
Further, one end of the sliding pin shaft is a stepped shaft which is inserted into the stepped hole to limit the sliding distance between two adjacent elevator bodies.
Further, a magnet mounting hole is formed in one joint surface of the elevator body, and a permanent magnet is mounted in the magnet mounting hole; the permanent magnet adsorbs one of the joint surfaces of the adjacent elevator bodies.
Further, the telescopic mechanism comprises at least two electromagnets, one end of each electromagnet is an arc end, and the arc end is connected with the outside of the elevator body; the other end of the electromagnet is connected with a driving piece, and the driving piece drives the electromagnet to move.
Further, the driving member is a hydraulic cylinder, a servo electric cylinder or a pneumatic cylinder.
Further, the electromagnet and the driving piece are connected with a remote upper computer signal.
The pipe column elevator structure provided by the invention has the following beneficial effects:
the elevator does not need to be provided with any power, and no matter the elevator rotates to any position around the central axis, the elevator bodies can be separated or attached under the action of external force so as to realize the opening and closing of the elevator, and the elevator has a simple structure and is convenient to operate.
The four elevator bodies can slide relatively, and three states of the elevator, namely, all the joint states of the elevator bodies, all the separation states of the elevator bodies and part of the separation states of the elevator bodies, are realized through the relative sliding, and the three states are matched with a plurality of different working states of a tubular column.
Drawings
FIG. 1 is a three-dimensional schematic view of an elevator assembly with cross-section of the present invention;
FIG. 2 is a schematic plan view of an elevator assembly with cross-section of the present invention;
FIG. 3 is a schematic view of an elevator body, sliding pin, permanent magnet assembly of the present invention;
FIG. 4 is a view showing the elevator of the present invention in a closed position;
FIG. 5 is a state diagram of an open mode of the elevator of the present invention;
FIG. 6 is a state diagram of another opening mode of the elevator of the present invention.
FIG. 7 is a view showing the closing state of the elevator according to the present invention under the symmetrical extrusion of an external force.
FIG. 8 is a view of the elevator of the present invention in the open position of FIG. 5 under symmetrical stretching by an external force.
FIG. 9 is a view of the elevator of the present invention in the open position of FIG. 6 under symmetrical stretching by an external force.
FIG. 10 is a view showing the state of the elevator according to the present invention separated from the external force after being opened.
1, an elevator body; 2. sliding pin shafts; 3. a permanent magnet; 4. an electromagnet.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
Example 1
Referring to fig. 1, 2 and 3, the pipe column elevator structure of this scheme includes a plurality of elevator body 1 and telescopic machanism, and a plurality of elevator body 1 connects gradually in series and forms an annular structure, and telescopic machanism can drive this annular structure to change the size in the annular structure, with the different operating condition of cooperation pipe column.
Specifically, any two adjacent elevator bodies 1 in the annular structure are connected in a sliding manner, and the telescopic mechanism is connected with at least two elevator bodies 1 so as to drive and change the aperture of the annular structure.
As one preferable mode of the embodiment, four elevator bodies 1 are selected as the annular structure, the four elevator bodies 1 form an annular structure, the periphery of the annular structure is round, the inside of the annular structure is square hollow, and when any one elevator body 1 slides relatively, the square hollow structure is changed into a polygonal structure.
The central angle corresponding to each elevator body 1 is 90 degrees, and four elevators form an outer circle and inner square structure.
The lower part of the elevator body 1 is an arc spherical surface, and four arc spherical surfaces are closed to form an opening in a hemispherical shape, and the opening is more matched with the circular shape of the pipe column so as to facilitate the centering of the pipe column.
Two adjacent elevator bodies 1 are connected in a sliding way through a sliding pin shaft 2, a fixing hole and a sliding hole are respectively formed in each elevator body 1, and the fixing holes and the sliding holes are mutually vertical; the fixed hole of an elevator body 1 is fixedly connected with one end of a sliding pin shaft 2, and the other end of the sliding pin shaft 2 is in sliding connection with the sliding hole.
In addition, one end of the sliding pin shaft 2 is provided with a stepped shaft, and the stepped shaft is inserted into the stepped hole to limit the sliding distance between two adjacent elevator bodies 1, so that the two adjacent elevator bodies 1 can slide relatively but cannot be separated.
A magnet mounting hole is formed in one joint surface of the elevator body 1, and a permanent magnet is arranged in the magnet mounting hole; the permanent magnet adsorbs an attaching face of the adjacent elevator body 1, so that the elevator body 1 is not separated in a certain stress range after attaching.
The sliding pin shaft 2 and the permanent magnet 3 can be fixed on the elevator body 1 in a reliable manner such as interference fit, welding, threaded connection, bonding and the like, so that no relative movement is generated between the sliding pin shaft and the permanent magnet.
The elevator body 1 of this embodiment has three working states: the elevator bodies 1 are all attached, and the elevator bodies 1 are all separated; the elevator bodies 1 are divided into two groups, the elevator bodies 1 of each group are attached, and the two groups are separated.
The elevator can be completely attached to each other or partially or completely separated from each other under the action of external force, and the hollow polygonal size formed in the elevator can be changed along with the external force. When the space formed by the polygon is larger than the step size on the pipe column, the elevator is in an open state, and the elevator can be pulled out along the axial direction of the pipe column; when the space formed by the polygon is smaller than the step size on the pipe column, the elevator is in a closed state, and the function of suspending the pipe column is realized.
No power is needed to be configured on the elevator, and no matter the elevator rotates to any position around the central axis, the elevator bodies 1 can be separated or attached under the action of external force so as to realize the opening and closing of the elevator.
Referring to fig. 4, when the elevator body 1 is pushed by the external force of the elevator to be in a closed state, the elevator bodies 1 are mutually attached, and the permanent magnets 3 inlaid on the attaching surfaces ensure that the elevator bodies 1 cannot be separated in a certain stress range through the magnetic field effect.
Under the external force extrusion action of the outside arbitrary angle centripetal direction of elevator, elevator body 1 can laminate each other at last, and under the magnetic force actuation of permanent magnet 3, the elevator is in the closed state. At this time, the hollow square formed inside the elevator is smaller than the step formed by the pipe hoop of the pipe column, so that the function of suspending the pipe column is realized.
Referring to fig. 5, in the case that the elevator only adopts the wire rope suspension mode, the elevator may rotate around the axis of the pipe string, if the external force of the centrifugal direction outside the elevator acts on two adjacent elevator bodies 1 at the same time, the two adjacent elevator bodies 1 will not slide relatively, but can slide relatively with the other two adjacent elevator bodies 1, the sliding distance is reasonably designed according to the pipe string size, so that the size of the hollow square formed inside the elevator is larger than the size of the step formed by the pipe hoop of the pipe string, and at this time, the elevator is in an open state and can be separated from the upper part of the pipe string.
Referring to fig. 6, if external force in the centrifugal direction of the outside of the elevator acts only on the non-adjacent elevator bodies 1, the four elevator bodies 1 will slide relatively, so that the hollow square size formed inside the elevator is larger than the step size formed by the pipe hoop of the pipe string, and the elevator is in an open state and can be pulled out from the upper part of the pipe string.
Example 2
The embodiment provides an external force implementation mode for the elevator, namely, the telescopic mechanism is adopted to drive the elevator, and the method specifically comprises the following steps:
the telescopic machanism includes two at least electro-magnet 4, and the one end of electro-magnet 4 is the arc end, and this arc end links to each other with the outside of elevator body 1, and the other end of electro-magnet 4 links to each other with the driving piece, and the driving piece drives electro-magnet 4 and removes.
The driving piece is a hydraulic cylinder, a servo electric cylinder or a pneumatic cylinder, the electromagnet 4 and the driving piece are connected with a remote upper computer signal, and the electricity obtaining of the electromagnet 4 and the driving control of the driving piece can be controlled remotely.
Referring to fig. 7, the external force is generated by a pair of telescopic mechanisms symmetrically arranged around the center of the elevator, and the telescopic mechanisms can be directly driven by a hydraulic cylinder and a servo electric cylinder or consist of electric, hydraulic, pneumatic and other power machines matched with other mechanisms capable of realizing telescopic functions. The head of the telescopic mechanism is provided with a pair of electromagnets 4, when the telescopic mechanism moves centripetally towards the center of the elevator, the elevator bodies 1 are extruded to be finally attached to each other, and the electromagnets 4 are not electrified.
Referring to fig. 8 and 9, when the elevator needs to be opened, the telescopic mechanism moves towards the centripetal direction of the center of the elevator until the telescopic mechanism is attached to the elevator body 1, the electromagnet 4 is electrified to adsorb the elevator body 1, the telescopic mechanism moves towards the centrifugal direction again, the electromagnetic force is regulated and set to be slightly larger than the magnetic force of the permanent magnet 3, the friction force between the elevator body 1 and the sliding pin shaft 2 and other resistance forces, and then the elevator is pulled away.
After the elevator is pulled to the designed distance, the elevator is limited to be pulled further due to the action of the stepped shaft. When the force of the telescopic mechanism moving towards the centrifugal direction of the center of the elevator is larger than the electromagnetic force, the electromagnet 4 is separated from the elevator. Thus, the elevator opening function is completed.
Specifically, taking the pressurized operation as an example, because the combined height of well control equipment is higher, the height of the pipe column position from the ground is also higher, and if the pipe column is lifted and lowered by adopting the traditional manually opened and closed elevator, the operator is required to perform high-altitude operation. If a costly hydraulic or electric driven automatic elevator is used, it is also necessary to configure a corresponding lifting system for elevator positioning. The elevator can be hung in a steel wire rope lifting mode with the lowest cost and the simplest cost, an operator is not required to operate the elevator close to the elevator at high altitude, and the elevator opening and closing function can be realized by only remotely operating the telescopic mechanism shown in fig. 7, 8, 9 and 10.
The elevator does not need to be provided with any power (but can apply external force), and no matter the elevator rotates to any position around the central axis, the elevator bodies 1 can be separated or attached under the action of the external force so as to realize the opening and closing of the elevator, and the elevator has a simple structure and is convenient to operate.
Although specific embodiments of the invention have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (1)
1. A tubular column elevator structure, its characterized in that: comprises a plurality of elevator bodies and a telescopic mechanism; the plurality of elevator bodies are sequentially connected in series to form an annular structure, and any two adjacent elevator bodies in the annular structure are connected in a sliding manner; the telescopic mechanism is connected with at least two elevator bodies so as to drive and change the aperture of the annular structure;
the annular structure comprises four elevator bodies, the four elevator bodies form an annular structure, the periphery of the annular structure is circular, and the inside of the annular structure is square hollow; the central angle corresponding to each elevator body is 90 degrees;
the lower part of the elevator body is an arc spherical surface, and four arc spherical surfaces are closed to form an opening in a hemispherical shape;
the two adjacent elevator bodies are connected in a sliding manner through a sliding pin shaft;
the elevator body is internally provided with a fixing hole and a sliding hole, and the fixing hole and the sliding hole are mutually vertical; the fixed hole of one elevator body is fixedly connected with one end of a sliding pin shaft, and the other end of the sliding pin shaft is in sliding connection with the sliding hole in the adjacent elevator body;
the sliding hole is a stepped hole, one end of the sliding pin shaft is a stepped shaft, and the stepped shaft is inserted into the stepped hole to limit the sliding distance between two adjacent elevator bodies;
a magnet mounting hole is formed in one joint surface of the elevator body, and a permanent magnet is arranged in the magnet mounting hole; the permanent magnet adsorbs one joint surface of the adjacent elevator body;
the telescopic mechanism comprises at least two electromagnets, one end of each electromagnet is an arc end, and the arc end is connected with the outside of the elevator body; the other end of the electromagnet is connected with a driving piece, and the driving piece drives the electromagnet to move;
the driving piece is a hydraulic cylinder, a servo electric cylinder or a pneumatic cylinder;
the electromagnet and the driving piece are connected with a remote upper computer signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211581865.2A CN115822473B (en) | 2022-12-09 | 2022-12-09 | Tubular column elevator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211581865.2A CN115822473B (en) | 2022-12-09 | 2022-12-09 | Tubular column elevator structure |
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| Publication Number | Publication Date |
|---|---|
| CN115822473A CN115822473A (en) | 2023-03-21 |
| CN115822473B true CN115822473B (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211581865.2A Active CN115822473B (en) | 2022-12-09 | 2022-12-09 | Tubular column elevator structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2085510A (en) * | 1980-10-16 | 1982-04-28 | Gray Emma Dee | Combined well casing spider and elevator |
| CN204677131U (en) * | 2015-04-10 | 2015-09-30 | 中国石油大学(华东) | Motor drives automatic elevator |
| WO2015173572A2 (en) * | 2014-05-14 | 2015-11-19 | Claxton Engineering Services Limited | Tension ring lifting assembly |
| CN205714032U (en) * | 2016-06-21 | 2016-11-23 | 崔斌 | A kind of oil gas field workover treatment with pressure Special-purpose hanger card structure |
| CN106522857A (en) * | 2016-04-12 | 2017-03-22 | 中国石油大学(华东) | Novel hydraulic safety elevator |
| CN206816197U (en) * | 2017-06-26 | 2017-12-29 | 胡忠太 | A kind of elevator apparatus |
| CN109236205A (en) * | 2018-11-19 | 2019-01-18 | 中国海洋石油集团有限公司 | A kind of tubing string elevator |
-
2022
- 2022-12-09 CN CN202211581865.2A patent/CN115822473B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2085510A (en) * | 1980-10-16 | 1982-04-28 | Gray Emma Dee | Combined well casing spider and elevator |
| WO2015173572A2 (en) * | 2014-05-14 | 2015-11-19 | Claxton Engineering Services Limited | Tension ring lifting assembly |
| CN204677131U (en) * | 2015-04-10 | 2015-09-30 | 中国石油大学(华东) | Motor drives automatic elevator |
| CN106522857A (en) * | 2016-04-12 | 2017-03-22 | 中国石油大学(华东) | Novel hydraulic safety elevator |
| CN205714032U (en) * | 2016-06-21 | 2016-11-23 | 崔斌 | A kind of oil gas field workover treatment with pressure Special-purpose hanger card structure |
| CN206816197U (en) * | 2017-06-26 | 2017-12-29 | 胡忠太 | A kind of elevator apparatus |
| CN109236205A (en) * | 2018-11-19 | 2019-01-18 | 中国海洋石油集团有限公司 | A kind of tubing string elevator |
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| Publication number | Publication date |
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| CN115822473A (en) | 2023-03-21 |
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