CN107764727B - Rotatable corrosion hanging piece device - Google Patents
Rotatable corrosion hanging piece device Download PDFInfo
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- CN107764727B CN107764727B CN201711152759.1A CN201711152759A CN107764727B CN 107764727 B CN107764727 B CN 107764727B CN 201711152759 A CN201711152759 A CN 201711152759A CN 107764727 B CN107764727 B CN 107764727B
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Abstract
The invention relates to a rotatable corrosion hanging piece device, and belongs to the technical field of corrosion monitoring of oil and gas field pipelines and equipment. The rotatable corrosion hanging piece device comprises three units of power sulfur removal, power transmission and corrosion monitoring. The power sulfur removal unit comprises a rotary rod, a control rod and a rotary wheel, and the rotary state of the rotary wheel is controlled by changing the stress angle of the rotary blade; the power transmission unit is used for completing the energy transmission of the power sulfur removal unit and the corrosion monitoring unit through a transmission rotating wheel, a transmission rotating rod and a prestretched pi-shaped transmission rod; the corrosion monitoring unit realizes uninterrupted rotation of the pi-shaped corrosion hanging piece in a power transmission mode. The pi-shaped hanging piece is designed to enhance the bending resistance of the hanging piece, and the hanging piece is prevented from bending, breaking or falling off by combining a rotatable hanging piece mode; through the vortex flow of the air flow, the collision, agglomeration growth and gravity sedimentation of the elemental sulfur are promoted, meanwhile, the sediment of the elemental sulfur on the surface of the rotary hanging piece is further reduced by utilizing the scouring and carrying functions of the air flow, and the accuracy of corrosion monitoring results is improved.
Description
Technical Field
The invention relates to a rotatable corrosion hanging piece device, and belongs to the technical field of corrosion monitoring of oil and gas field pipelines and equipment.
Background
The corrosion hanging piece monitoring is used as an important component of a corrosion monitoring system, has the advantages of simple operation, comprehensive corrosion information, wide applicable corrosion environment, reliable data and the like, and is always used as an important corrosion monitoring method and material selection basis for production equipment and gathering pipelines. However, the corrosion hanging pieces at a plurality of positions in the current oil and gas field gathering and transportation corrosion monitoring system are subject to the phenomena of falling, bending, breaking and the like, and the corrosion monitoring data are inaccurate.
The analysis of the reasons for the abnormal conditions in the concentrated transmission corrosion monitoring system mainly comprises the following points:
1) The air flow pressure and flow fluctuation impact causes frequent and severe shaking of the hanging piece and the bracket, so that the hanging piece fixing bolt is loosened and falls off;
2) The corrosion hanging piece is connected to the hanging rod to form a cantilever structure, and yield bending occurs under the impact of high-speed airflow;
3) The fluctuation of the pressure and the flow rate of the air flow generates unidirectional torsion in the corrosion monitoring system so as to lead the weak part (corrosion hanging piece) of the corrosion monitoring system to be broken;
4) The deposition of elemental sulfur greatly increases the corrosion rate of the hanger plate, making the difference between the measured data of the corrosion hanger plate and the actual corrosion data greater.
The frequent falling-off phenomenon of the corrosion hanging piece causes certain influence and harm to the corrosion monitoring and the system operation, and mainly comprises the following aspects:
1) Key equipment such as a throttle valve and the like are easy to cause blockage faults, and production is influenced;
2) The corrosion monitoring data is lost, and a complete corrosion hanging piece analysis system cannot be established;
3) When the hanging piece moves along with the airflow in the pipeline, the inner wall of the pipeline can be mechanically damaged due to friction or collision.
Therefore, aiming at abnormal conditions such as falling, bending, breakage and the like of the corrosion hanging pieces in the gathering and transportation corrosion monitoring system, the corrosion monitoring device of the gathering and transportation system is improved, and the method has important significance for safe and stable operation of corrosion monitoring and system operation and improvement of production economic benefit.
Disclosure of Invention
The invention aims to provide a rotatable corrosion hanging piece device, which comprehensively analyzes the reasons of abnormal phenomena of a corrosion monitoring system from the viewpoint of ensuring the safe and stable operation of an oil and gas field gathering and conveying system, and performs the improved design of the corrosion monitoring device so as to provide guarantee for the normal operation of the oil and gas field corrosion monitoring system.
The invention mainly solves the following problems:
(1) The dynamic sulfur removal unit is designed, vortex flow is generated through the rotating wheel, collision, agglomeration growth and gravity sedimentation of elemental sulfur are promoted, meanwhile, deposition of the elemental sulfur on the surface of the hanging piece is further reduced by utilizing the airflow scouring action and carrying capacity, and accuracy of corrosion monitoring results is improved.
(2) The pretension pi-shaped transmission rod is designed to realize the tight connection of all transmission parts, the energy transmission of the power sulfur removal unit and the corrosion monitoring unit is completed through the transmission rotating wheel and the transmission rotating rod, the uninterrupted rotation of the corrosion hanging piece is realized, and the abnormal phenomena of bending, breaking or falling of the hanging piece are avoided.
(3) And a pi-shaped corrosion hanging piece is designed, the bending-resistant section of the corrosion hanging piece is changed, the bending resistance of the hanging piece is improved, and the bending yield phenomenon of the corrosion hanging piece due to the impact of air flow is avoided.
In order to achieve the above object, the present invention has the following technical scheme.
A rotatable corrosion hanging piece device comprises a power sulfur removal unit, a power transmission unit and a corrosion monitoring unit;
the power sulfur removal unit comprises a first protection cover 11, a first pressure gauge 12, a first relief valve 13, a first sealing ring 14, a first mounting cylinder 20, a first sealing plug 21, a first protection plug 22, a first connecting head 23, a first sealing column 24, a first mounting seat 31, a first plug valve 32, a first balance valve 33, a second relief valve 34, a first control rod 41, a second control rod 42, a first rotating rod 43 and a rotating wheel 5;
the power transmission unit comprises a first rotating wheel 61, a second rotating wheel 62, a first rotating rod 63, a transmission rod 64, a connecting cylinder 65, a second rotating rod 66, a third rotating wheel 67 and a fourth rotating wheel 68;
the corrosion monitoring unit comprises a second protective cover 15, a second pressure gauge 16, a third relief valve 17, a second sealing ring 18, a second mounting cylinder 25, a second sealing plug 26, a second protective plug 27, a second connector 28, a second sealing column 29, a second mounting seat 35, a second plug valve 36, a second balance valve 37, a fourth relief valve 38, a second rotary rod 44, a pi-shaped hanging piece 7 and a production pipeline 8;
the first protecting cover 11 is provided with a first pressure gauge 12 and a first relief valve 13, is in threaded connection with the first mounting cylinder 20 and is sealed by a first sealing ring 14, the first mounting cylinder 20 is in threaded connection with the first sealing plug 21 and the first sealing column 24, the lower part of the first mounting cylinder 20 is in flange connection with the first mounting seat 31, the first mounting seat 31 is provided with a first plug valve 32, a first balance valve 33 and a second relief valve 34, the first mounting seat 31 is welded on the production pipeline 8, the first sealing column 24 is provided with a first connecting head 23, a first protecting plug 22 and a first rotating rod 43, the first rotating rod 43 is internally provided with a first control rod 41 and a second control rod 42, the outer part of the first sealing column is provided with a first rotating wheel 61, the lower part of the first sealing column is connected with the rotating wheel 5, the first rotating wheel 61 is in meshed transmission with the second rotating wheel 62, the second rotating wheel 62 drives a transmission rod 64 to rotate through the first rotating rod 63, the transmission rod 64 is positioned in the connecting cylinder 65, the third rotating wheel 67 is connected with the second rotating rod 66, is meshed with the fourth rotating wheel 68 for transmission, the fourth rotating wheel 68 is arranged on the second rotating rod 44, the upper part of the second rotating rod 44 is positioned in the second sealing column 29, the lower part of the second rotating rod is connected with the pi-shaped hanging piece 7, the second sealing column 29 is provided with a second connector 28 and a second protection plug 27, the second protection plug 27 is arranged in the second mounting cylinder 25 through threaded connection, the second protection plug 27 is provided with a second sealing plug 26, the second sealing plug 26 is in threaded connection with the second mounting cylinder 25, the upper part of the second mounting cylinder 25 is connected with the second protection cover 15, the lower part of the second mounting cylinder is connected with the second mounting seat 35, the second protection cover 15 is provided with the second pressure gauge 16 and the third relief valve 17, the second mounting seat 35 is provided with the second plug valve 36, the second balance valve 37 and the fourth relief valve 38, is welded to the production line 8.
Further, the rotating wheel 5 comprises a main rotating wheel 51, an auxiliary rotating wheel 52, rotating blades 53 and an outer rotating cylinder 54;
the main rotating wheel 51 is arranged on the second control rod 42 and is meshed with the auxiliary wheels 52 around for transmission, the auxiliary wheels 52 are connected with the rotating blades 53, the main rotating wheel 51 and the auxiliary wheels 52 are arranged inside the outer rotating cylinder 54, the rotating blades 53 are positioned outside the outer rotating cylinder 54, and the outer rotating cylinder 54 is connected with the first rotating rod 43.
Further, the four sides of the rotating wheel 5 are symmetrically provided with 4 auxiliary wheels 52 and 4 rotating blades 53, and the rotating blades 53 are made of polytetrafluoroethylene.
Further, the transmission rod 64 is a pre-tensioned pi-shaped transmission rod.
Furthermore, the shape of the pi-shaped hanging piece is the same as the combined shape of the three strip-shaped hanging pieces with the same size.
Further, the distance between the dynamic sulfur removal unit and the corrosion monitoring unit is 1.2-2 m.
Further, the rotatable etching hanging piece device is suitable for H 2 And S content is 0-15% and pressure is 0-10 MPa.
Further, the method for installing the rotatable corrosion hanging piece device comprises the following steps:
s1, respectively forming mounting small holes at two ends of a production pipeline at a distance of 1.2-2 m, and welding a first mounting seat 31 and a second mounting seat 35;
s2, installing corrosion monitoring unit
S21, a second mounting cylinder 25 is in flange connection with a second mounting seat 35, a pi-shaped hanging piece 7 is in bolt connection with a second rotating rod 44, a hanging piece taking and placing device is mounted, the taking and placing rod is in threaded connection with a second connector 28, and a second sealing column 29 is mounted in the second mounting cylinder 25 in a rotating mode;
s22, opening a second balance valve 37 and a second plug valve 36, rotating a pick-and-place rod, and continuing to move down the second sealing column 29 to place the pi-shaped hanging piece 7 in the production pipeline 8;
s23, closing a second balance valve 37, connecting a second protection plug 27 with a second connector 28 in a threaded manner, connecting a second sealing plug 26 with a second mounting cylinder 25 in a threaded manner, forming a second communication interface by the second sealing plug 26, the second protection plug 27 and the inner cavity of the second connector 28, and mounting a second protection cover 15;
s3, installing a power sulfur removal unit
S31, the first mounting cylinder 20 is in flange connection with the first mounting seat 31, a hanging piece taking and placing device is mounted, a taking and placing rod is in threaded connection with the first connecting head 23, and the first sealing column 24 is mounted in the first mounting cylinder 20 in a rotating mode;
s32, opening a first balance valve 33 and a first plug valve 32, rotating a pick-and-place rod, continuously moving the first sealing column 24 downwards, placing the rotary wheel 5 in the production pipeline 8, and closing the first balance valve 33;
s4, power transmission connection
S41, rotating the second rotating rod 66 to realize the meshing connection of the third rotating wheel 67 and the fourth rotating wheel 68, and rotating the first rotating rod 63 to realize the meshing connection of the first rotating wheel 61 and the second rotating wheel 62;
s42, a transmission rod 64 is inserted into a connecting cylinder 65, a first rotating rod 63 and a second rotating rod 66 are respectively inserted into inner cavities at two ends of the transmission rod 64, and two ends of a power transmission unit are respectively connected with a power sulfur removal unit and a corrosion monitoring unit in a flange manner;
s43, the first control rod 41 is in threaded connection with the second control rod 42 in a downward moving and rotating mode, the first control rod 41 is continuously rotated, the second control rod 42 rotates to drive the rotating blade 53 to rotate to a working state, the air flow impacts the rotating blade 53, and the rotating wheel 5 rotates;
s5, the first protection plug 22 is in threaded connection with the first connecting head 23, the first sealing plug 21 is in threaded connection with the first mounting cylinder 20, the first sealing plug 21, the first protection plug 22 and the inner cavity of the first connecting head 23 form a first communication interface, the first protection cover 11 is mounted, and the corrosion monitoring device is mounted.
Further, the method for disassembling the rotatable corrosion hanging piece device comprises the steps of disassembling the power sulfur removal unit and disassembling the corrosion monitoring unit, wherein the specific steps are as follows:
a. power sulfur removal unit disassembly
a1, after the residual gas in the power sulfur removal unit enters the treatment device through the first discharge valve 13 to be treated, opening the first protection cover 11, rotating the first control rod 41 anticlockwise, rotating the rotating blades 53 to a non-working state, gradually stopping the rotation of the rotating wheel 5, and taking out the first control rod 41;
a2, connecting the hanging piece taking and placing device with the first mounting cylinder 20, connecting the taking and placing rod with the first communication interface in a threaded manner in a rotating manner, enabling the first sealing plug 21 and the first protection plug 22 to move upwards, enabling residual gas to enter the processing device through the first communication interface, continuing to rotate the taking and placing rod, and enabling the first sealing plug 21 and the first protection plug 22 to be detached, wherein the first sealing column 24 is in threaded connection with the taking and placing rod;
a3, rotating the taking and placing rod, moving the first sealing column 24 upwards, closing the first plug valve 32, enabling residual gas to enter the treatment device through the second discharge valve 34 to finish treatment, continuing to rotate the taking and placing rod, taking out the first sealing column 24 from the first mounting cylinder 20, and finishing the disassembly of the power sulfur removal unit;
b. corrosion monitoring unit disassembly
b1, residual gas in the corrosion monitoring unit enters the treatment device through the third relief valve 17 to be treated, the second protective cover 15 is opened, the hanging piece taking and placing device is arranged on the second installation cylinder 25, the taking and placing rod is in threaded connection with the second communication interface in a rotating mode, meanwhile, the second sealing plug 26 and the second protective plug 27 move upwards, the residual gas enters the treatment device through the second communication interface, the taking and placing rod is continuously rotated to complete the disassembly of the second sealing plug 26 and the second protective plug 27, and at the moment, the second sealing column 29 is in threaded connection with the taking and placing rod;
b2, rotating the taking and placing rod, moving the second sealing column 29 upwards, closing the second plug valve 36, allowing residual gas to enter the treatment device through the second discharge valve for treatment, continuing to rotate the taking and placing rod, taking the second sealing column 29 out of the second mounting cylinder 25, and completing the disassembly of the power sulfur removal unit.
The beneficial effects of the invention are as follows:
(1) The invention comprises three units of power sulfur removal, power transmission and corrosion monitoring, and is mainly used for solving the problems of bending, breaking, falling off of corrosion hanging pieces, inaccurate monitoring results and the like in a high-pressure and high-sulfur-content gas field gathering and transportation system, ensuring the safe and stable operation of the gathering and transportation system and improving the production economic benefit.
(2) The dynamic sulfur removal unit is designed, vortex flow is generated through the rotating wheel, aggregation and sedimentation of elemental sulfur are completed, meanwhile, deposition of the elemental sulfur on the surface of the hanging piece is further reduced by utilizing the airflow scouring action and carrying capacity, and accuracy of corrosion monitoring results is improved.
(3) The power transmission unit and the corrosion monitoring unit are designed, and the energy transmission of the power sulfur removal unit and the corrosion monitoring unit is completed through the transmission rotating wheel, the transmission rotating rod and the pre-stretching pi-shaped transmission rod, so that uninterrupted rotation of the corrosion hanging piece is realized, impact influence of pipeline airflow on the hanging piece is weakened, and abnormal conditions of bending, breakage or falling of the hanging piece due to airflow impact are avoided.
(4) And a pi-shaped corrosion hanging piece is designed, the bending-resistant section of the corrosion hanging piece is changed, the bending resistance of the hanging piece is improved, and the bending yield phenomenon of the corrosion hanging piece under the action of airflow impact is avoided.
Drawings
Fig. 1 is a schematic view of the mounting structure of a rotatable corrosion coupon device in a non-operational state in accordance with an embodiment of the present invention.
Fig. 2 is a schematic view of the mounting structure of the rotatable corrosion coupon device in an operative state in accordance with an embodiment of the present invention.
Fig. 3 is a schematic view of a structure of a rotary wheel in a non-operating state according to an embodiment of the present invention.
Fig. 4 is a schematic view of a structure of a rotary wheel in an operating state in an embodiment of the present invention.
Fig. 5 is a three-dimensional perspective view of a rotating wheel in a non-operational state in an embodiment of the present invention.
Fig. 6 is a three-dimensional perspective view of a rotating wheel in an operating state in an embodiment of the present invention.
Fig. 7 is a schematic view of a structure of a front driving lever installed in an embodiment of the present invention.
Fig. 8 is a schematic structural view of the transmission rod after the completion of the installation in the embodiment of the present invention.
Fig. 9 is a three-dimensional perspective view of a pi-shaped corrosion coupon in an embodiment of the invention.
Fig. 10 is a three view of a pi-shaped corrosion coupon in an embodiment of the invention.
In the figure: 11. a first protective cover; 12. a second pressure gauge; 13. a first bleed valve; 14. a first seal ring; 15. a second protective cover; 16. a second pressure gauge; 17. a third bleed valve; 18. a second seal ring; 20. a first mounting cylinder; 21. a first sealing plug; 22. a first protection plug; 23. a first connector; 24. a first seal post; 25. a second mounting cylinder; 26. a second sealing plug; 27. a second protection plug; 28. a second connector; 29. a second seal post; 31. a first mount; 32. a first plug valve; 33. a first balancing valve; 34. a second bleed valve; 35. a second mounting base; 36. a second plug valve; 37. a second balance valve; 38. a fourth bleed valve; 41. a first control lever; 42. a second control lever; 43. a first rotating lever; 44. a second rotating lever; 5. a rotating wheel; 51. a main rotating wheel; 52. an auxiliary wheel; 53. rotating the blades; 54. an outer drum; 61. a first wheel; 62. a second wheel; 63. a first rotating lever; 64. a transmission rod; 65. a connecting cylinder; 66. a second rotating rod; 67. a third wheel; 68. a fourth wheel; 7. pi-shaped hanging piece; 8. and (5) producing a pipeline.
Detailed Description
The following description of specific embodiments of the invention is provided in connection with the accompanying drawings to provide a better understanding of the invention.
Examples
In this embodiment, fig. 1 is a schematic view of a mounting structure of a rotatable etching film hanging device in a non-operating state, and fig. 2 is a schematic view of a mounting structure of a rotatable etching film hanging device in an operating state. A rotatable corrosion hanging piece device comprises a power sulfur removal unit, a power transmission unit and a corrosion monitoring unit;
the power sulfur removal unit comprises a first protection cover 11, a first pressure gauge 12, a first relief valve 13, a first sealing ring 14, a first mounting cylinder 20, a first sealing plug 21, a first protection plug 22, a first connecting head 23, a first sealing column 24, a first mounting seat 31, a first plug valve 32, a first balance valve 33, a second relief valve 34, a first control rod 41, a second control rod 42, a first rotating rod 43 and a rotating wheel 5;
the power transmission unit comprises a first rotating wheel 61, a second rotating wheel 62, a first rotating rod 63, a transmission rod 64, a connecting cylinder 65, a second rotating rod 66, a third rotating wheel 67 and a fourth rotating wheel 68;
the corrosion monitoring unit comprises a second protective cover 15, a second pressure gauge 16, a third relief valve 17, a second sealing ring 18, a second mounting cylinder 25, a second sealing plug 26, a second protective plug 27, a second connector 28, a second sealing column 29, a second mounting seat 35, a second plug valve 36, a second balance valve 37, a fourth relief valve 38, a second rotary rod 44, a pi-shaped hanging piece 7 and a production pipeline 8;
the first protecting cover 11 is provided with a first pressure gauge 12 and a first relief valve 13, is in threaded connection with the first mounting cylinder 20 and is sealed by a first sealing ring 14, the first mounting cylinder 20 is in threaded connection with the first sealing plug 21 and the first sealing column 24, the lower part of the first mounting cylinder 20 is in flange connection with the first mounting seat 31, the first mounting seat 31 is provided with a first plug valve 32, a first balance valve 33 and a second relief valve 34, the first mounting seat 31 is welded on the production pipeline 8, the first sealing column 24 is provided with a first connecting head 23, a first protecting plug 22 and a first rotating rod 43, the first rotating rod 43 is internally provided with a first control rod 41 and a second control rod 42, the outer part of the first sealing column is provided with a first rotating wheel 61, the lower part of the first sealing column is connected with the rotating wheel 5, the first rotating wheel 61 is in meshed transmission with the second rotating wheel 62, the second rotating wheel 62 drives a transmission rod 64 to rotate through the first rotating rod 63, the transmission rod 64 is positioned in the connecting cylinder 65, the third rotating wheel 67 is connected with the second rotating rod 66, is meshed with the fourth rotating wheel 68 for transmission, the fourth rotating wheel 68 is arranged on the second rotating rod 44, the upper part of the second rotating rod 44 is positioned in the second sealing column 29, the lower part of the second rotating rod is connected with the pi-shaped hanging piece 7, the second sealing column 29 is provided with a second connector 28 and a second protection plug 27, the second protection plug 27 is arranged in the second mounting cylinder 25 through threaded connection, the second protection plug 27 is provided with a second sealing plug 26, the second sealing plug 26 is in threaded connection with the second mounting cylinder 25, the upper part of the second mounting cylinder 25 is connected with the second protection cover 15, the lower part of the second mounting cylinder is connected with the second mounting seat 35, the second protection cover 15 is provided with the second pressure gauge 16 and the third relief valve 17, the second mounting seat 35 is provided with the second plug valve 36, the second balance valve 37 and the fourth relief valve 38, is welded to the production line 8.
A method of installing a rotatable corrosion coupon device comprising the steps of:
s1, respectively forming mounting small holes at two ends of a production pipeline at a distance of 1.2-2 m, and welding a first mounting seat 31 and a second mounting seat 35;
s2, installing corrosion monitoring unit
S21, a second mounting cylinder 25 is in flange connection with a second mounting seat 35, a pi-shaped hanging piece 7 is in bolt connection with a second rotating rod 44, a hanging piece taking and placing device is mounted, the taking and placing rod is in threaded connection with a second connector 28, and a second sealing column 29 is mounted in the second mounting cylinder 25 in a rotating mode;
s22, opening a second balance valve 37 and a second plug valve 36, rotating a pick-and-place rod, and continuing to move down the second sealing column 29 to place the pi-shaped hanging piece 7 in the production pipeline 8;
s23, closing a second balance valve 37, connecting a second protection plug 27 with a second connector 28 in a threaded manner, connecting a second sealing plug 26 with a second mounting cylinder 25 in a threaded manner, forming a second communication interface by the second sealing plug 26, the second protection plug 27 and the inner cavity of the second connector 28, and mounting a second protection cover 15;
s3, installing a power sulfur removal unit
S31, the first mounting cylinder 20 is in flange connection with the first mounting seat 31, a hanging piece taking and placing device is mounted, a taking and placing rod is in threaded connection with the first connecting head 23, and the first sealing column 24 is mounted in the first mounting cylinder 20 in a rotating mode;
s32, opening a first balance valve 33 and a first plug valve 32, rotating a pick-and-place rod, continuously moving the first sealing column 24 downwards, placing the rotary wheel 5 in the production pipeline 8, and closing the first balance valve 33;
s4, power transmission connection
S41, rotating the second rotating rod 66 to realize the meshing connection of the third rotating wheel 67 and the fourth rotating wheel 68, and rotating the first rotating rod 63 to realize the meshing connection of the first rotating wheel 61 and the second rotating wheel 62;
s42, a transmission rod 64 is inserted into a connecting cylinder 65, a first rotating rod 63 and a second rotating rod 66 are respectively inserted into inner cavities at two ends of the transmission rod 64, and two ends of a power transmission unit are respectively connected with a power sulfur removal unit and a corrosion monitoring unit in a flange manner;
s43, the first control rod 41 is in threaded connection with the second control rod 42 in a downward moving and rotating mode, the first control rod 41 is continuously rotated, the second control rod 42 rotates to drive the rotating blade 53 to rotate to a working state, the air flow impacts the rotating blade 53, and the rotating wheel 5 rotates;
s5, the first protection plug 22 is in threaded connection with the first connecting head 23, the first sealing plug 21 is in threaded connection with the first mounting cylinder 20, the first sealing plug 21, the first protection plug 22 and the inner cavity of the first connecting head 23 form a first communication interface, the first protection cover 11 is mounted, and the corrosion monitoring device is mounted.
The disassembly method of the rotatable corrosion hanging piece device comprises the steps of disassembling a power sulfur removal unit and disassembling a corrosion monitoring unit.
The power sulfur removal unit comprises the following specific steps of:
a1, after the residual gas in the power sulfur removal unit enters the treatment device through the first discharge valve 13 to be treated, opening the first protection cover 11, rotating the first control rod 41 anticlockwise, rotating the rotating blades 53 to a non-working state, gradually stopping the rotation of the rotating wheel 5, and taking out the first control rod 41;
a2, connecting the hanging piece taking and placing device with the first mounting cylinder 20, connecting the taking and placing rod with the first communication interface in a threaded manner in a rotating manner, enabling the first sealing plug 21 and the first protection plug 22 to move upwards, enabling residual gas to enter the processing device through the first communication interface, continuing to rotate the taking and placing rod, and enabling the first sealing plug 21 and the first protection plug 22 to be detached, wherein the first sealing column 24 is in threaded connection with the taking and placing rod;
a3, rotating the taking and placing rod, moving the first sealing column 24 upwards, closing the first plug valve 32, enabling residual gas to enter the treatment device through the second discharge valve 34 to finish treatment, continuing to rotate the taking and placing rod, taking out the first sealing column 24 from the first mounting cylinder 20, and finishing the disassembly of the power sulfur removal unit;
the specific steps of the disassembly of the corrosion monitoring unit are as follows:
b1, residual gas in the corrosion monitoring unit enters the treatment device through the third relief valve 17 to be treated, the second protective cover 15 is opened, the hanging piece taking and placing device is arranged on the second installation cylinder 25, the taking and placing rod is in threaded connection with the second communication interface in a rotating mode, meanwhile, the second sealing plug 26 and the second protective plug 27 move upwards, the residual gas enters the treatment device through the second communication interface, the taking and placing rod is continuously rotated to complete the disassembly of the second sealing plug 26 and the second protective plug 27, and at the moment, the second sealing column 29 is in threaded connection with the taking and placing rod;
b2, rotating the taking and placing rod, moving the second sealing column 29 upwards, closing the second plug valve 36, allowing residual gas to enter the treatment device through the second discharge valve for treatment, continuing to rotate the taking and placing rod, taking the second sealing column 29 out of the second mounting cylinder 25, and completing the disassembly of the power sulfur removal unit.
Fig. 3 is a schematic structural view of the rotary wheel in a non-working state, fig. 4 is a schematic structural view of the rotary wheel in a working state, fig. 5 is a three-dimensional perspective view of the rotary wheel in a non-working state, fig. 6 is a three-dimensional perspective view of the rotary wheel in a working state, the rotary wheel 5 comprises a main rotary wheel 51, an auxiliary rotary wheel 52, rotary blades 53 and an outer rotary cylinder 54, wherein the rotary blades 53 are made of polytetrafluoroethylene.
As shown in fig. 3 and 4, four rotating blades 53 are symmetrically distributed on the outer rotating cylinder 54, and the rotating wheel 5 is connected with the second control rod 42 and the first rotating rod 43.
As shown in fig. 5 and 6, the main rotating wheel 51 is mounted on the second control rod 42 and is meshed with the auxiliary wheels 52 around, the auxiliary wheels 52 are provided with rotating blades 53, the main rotating wheel 51 and the auxiliary wheels 52 are mounted inside the outer rotating cylinder 54, the rotating blades 53 are located outside the outer rotating cylinder 54, and the outer rotating cylinder 54 is connected with the first rotating rod 43.
Fig. 7 is a schematic view of the structure of the transmission rod before installation, the transmission rod 64 is a pre-tensioned pi-shaped transmission rod, and is not installed in a stretched state before the power transmission unit. Fig. 8 is a schematic diagram of the structure after the transmission rod is mounted, and the pi-shaped transmission rod 64 is restored to its normal state after the mounting is completed.
In the monitoring period, under the impact of the air flow, the rotating wheel 5 rotates, on one hand, simple sulfur in the air flow is settled through the vortex and gravity settlement effect, on the other hand, the first rotating rod 43 rotates under the driving of the rotating wheel 5 and is in meshed transmission with the second rotating wheel 62 through the first rotating wheel 61, meanwhile, the first rotating rod 63, the transmission rod 64 and the second rotating rod 66 drive the third rotating wheel 67 and the fourth rotating wheel 68 to be in meshed transmission through tight linkage, kinetic energy generated by the rotating wheel 5 is transmitted to the corrosion monitoring unit, the second rotating rod 44 rotates under the driving of the fourth rotating wheel 68, and the corrosion hanging piece rotates along with the second rotating rod 44.
Fig. 9 is a three-dimensional perspective view of a pi-shaped corrosion coupon, and fig. 10 is a three-dimensional view of a pi-shaped corrosion coupon, the pi-shaped coupon 7 being the same shape as the combination of three identically sized strip-shaped coupons. As shown in fig. 9 and 10, holes are formed on two symmetrical surfaces of the pi-shaped hanging piece, and the pi-shaped hanging piece 7 is connected with the second rotating rod 44 through bolt connection, so that the hanging piece is firmly connected. Secondly, the pi-shaped hanging piece changes the bending-resistant section of the common corrosion hanging piece (strip-shaped hanging piece) and improves the bending resistance of the hanging piece. The corrosion monitoring device weakens impact and torsion influence of pipeline air flow on the hanging piece in a rotatable mode of the pi-shaped hanging piece, and effectively avoids abnormal conditions such as bending, breaking or falling off of the corrosion hanging piece under the action of air flow impact.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (7)
1. A rotatable corrosion coupon apparatus, characterized by: comprises a power sulfur removal unit, a power transmission unit and a corrosion monitoring unit;
the power sulfur removal unit comprises a first protection cover (11), a first pressure gauge (12), a first relief valve (13), a first sealing ring (14), a first mounting cylinder (20), a first sealing plug (21), a first protection plug (22), a first connecting head (23), a first sealing post (24), a first mounting seat (31), a first plug valve (32), a first balance valve (33), a second relief valve (34), a first control rod (41), a second control rod (42), a first rotary rod (43) and a rotary wheel (5);
the power transmission unit comprises a first rotating wheel (61), a second rotating wheel (62), a first rotating rod (63), a transmission rod (64), a connecting cylinder (65), a second rotating rod (66), a third rotating wheel (67) and a fourth rotating wheel (68);
the corrosion monitoring unit comprises a second protective cover (15), a second pressure gauge (16), a third relief valve (17), a second sealing ring (18), a second mounting cylinder (25), a second sealing plug (26), a second protective plug (27), a second connector (28), a second sealing post (29), a second mounting seat (35), a second plug valve (36), a second balance valve (37), a fourth relief valve (38), a second rotary rod (44), a pi-shaped hanging piece (7) and a production pipeline (8);
the first protection cover (11) is provided with a first pressure gauge (12) and a first relief valve (13), the first protection cover is sealed with a first installation cylinder (20) through threaded connection and a first sealing ring (14), the first installation cylinder (20) is connected with a first sealing plug (21) and a first sealing column (24) through threaded connection, the lower part of the first installation cylinder is connected with a first installation seat (31) through a flange, the first installation seat (31) is provided with a first plug valve (32), a first balance valve (33) and a second relief valve (34), the first protection cover is welded on a production pipeline (8), the first sealing column (24) is provided with a first connecting head (23), a first protection plug (22) and a first rotary rod (43), a first control rod (41) and a second control rod (42) are arranged inside the first rotary rod (43), a first rotary wheel (61) is arranged outside the first rotary rod (61), the lower part of the first rotary rod (61) is connected with a second rotary wheel (62) through a first rotary rod (63) to drive a transmission rod (64), the second rotary rod (62) is positioned in a fourth rotary rod (66) and meshed with a rotary rod (66), the first rotary rod (66) is positioned in the fourth rotary rod (65), the fourth rotating wheel (68) is positioned on the second rotating rod (44), the upper part of the second rotating rod (44) is positioned in a second sealing column (29), the lower part of the second rotating rod is connected with a pi-shaped hanging piece (7), the second sealing column (29) is provided with a second connector (28) and a second protection plug (27), the second protection plug (27) is installed in a second installation cylinder (25) through threaded connection, a second sealing plug (26) is arranged on the second protection plug (27), the second sealing plug (26) is in threaded connection with the second installation cylinder (25), the upper part of the second installation cylinder (25) is connected with a second protection cover (15), the lower part of the second installation cylinder is connected with a second installation seat (35), the second protection cover (15) is provided with a second pressure gauge (16) and a third relief valve (17), and the second installation seat (35) is provided with a second plug valve (36), a second balance valve (37) and a fourth relief valve (38) which are in welded connection with a production pipeline (8);
the transmission rod (64) is a pre-tensioned pi-shaped transmission rod;
the rotary wheel (5) comprises a main rotary wheel (51), an auxiliary wheel (52), rotary blades (53) and an outer rotary cylinder (54);
the main rotating wheel (51) is arranged on the second control rod (42) and is in meshed transmission with the surrounding auxiliary wheels (52), the auxiliary wheels (52) are connected with the rotating blades (53), the main rotating wheel (51) and the auxiliary wheels (52) are arranged inside the outer rotating cylinder (54), the rotating blades (53) are arranged outside the outer rotating cylinder (54), and the outer rotating cylinder (54) is connected with the first rotating rod (43).
2. The rotatable corrosion coupon device of claim 1, wherein: the four sides of the rotating wheel (5) are symmetrically provided with 4 auxiliary wheels (52) and 4 rotating blades (53), and the rotating blades (53) are made of polytetrafluoroethylene.
3. The rotatable corrosion coupon device of claim 1, wherein: the pi-shaped hanging piece has the same shape as the combination of the three strip-shaped hanging pieces with the same size.
4. The rotatable corrosion coupon device of claim 1, wherein: the distance between the dynamic sulfur removal unit and the corrosion monitoring unit is 1.2-2 m.
5. The rotatable corrosion coupon device of claim 1, wherein: adapted for H 2 And S content is 0-15% and pressure is 0-10 MPa.
6. A method of installing a rotatable corrosion coupon device as defined in claim 1, wherein: the method comprises the following steps:
s1, respectively forming mounting small holes at two ends of a production pipeline at a distance of 1.2-2 m, and welding a first mounting seat (31) and a second mounting seat (35);
s2, installing corrosion monitoring unit
S21, a second mounting cylinder (25) is in flange connection with a second mounting seat (35), a pi-shaped hanging piece (7) is in bolt connection with a second rotating rod (44), a hanging piece taking and placing device is mounted, the taking and placing rod is in threaded connection with a second connector (28), and a second sealing column (29) is mounted in the second mounting cylinder (25) in a rotating mode;
s22, opening a second balance valve (37) and a second plug valve (36), rotating a pick-and-place rod, continuously moving a second sealing column (29) downwards, and placing a pi-shaped hanging piece (7) in a production pipeline (8);
s23, closing a second balance valve (37), connecting a second protection plug (27) with a second connector (28) in a threaded manner, connecting a second sealing plug (26) with a second mounting cylinder (25) in a threaded manner, forming a second communication interface by the second sealing plug (26), the second protection plug (27) and the inner cavity of the second connector (28), and mounting a second protection cover (15);
s3, installing a power sulfur removal unit
S31, the first mounting cylinder (20) is in flange connection with the first mounting seat (31), a hanging piece taking and placing device is mounted, a taking and placing rod is in threaded connection with the first connecting head (23), and the first sealing column (24) is mounted in the first mounting cylinder (20) in a rotating mode;
s32, opening a first balance valve (33) and a first plug valve (32), rotating a pick-and-place rod, continuously moving a first sealing column (24) downwards, placing a rotating wheel (5) in a production pipeline (8), and closing the first balance valve (33);
s4, power transmission connection
S41, rotating the second rotating rod (66) to realize the meshing connection of the third rotating wheel (67) and the fourth rotating wheel (68), and rotating the first rotating rod (63) to realize the meshing connection of the first rotating wheel (61) and the second rotating wheel (62);
s42, a transmission rod (64) is inserted into a connecting cylinder (65), a first rotating rod (63) and a second rotating rod (66) are respectively inserted into inner cavities at two ends of the transmission rod (64), and two ends of a power transmission unit are respectively connected with a power sulfur removal unit and a corrosion monitoring unit through flanges;
s43, connecting the first control rod (41) with the second control rod (42) in a threaded manner in a downward moving and rotating manner, continuously rotating the first control rod (41), enabling the second control rod (42) to rotate, driving the rotating blades (53) to rotate to a working state, enabling air flow to impact the rotating blades (53), and enabling the rotating wheel (5) to rotate;
s5, the first protection plug (22) is in threaded connection with the first connecting head (23), the first sealing plug (21) is in threaded connection with the first mounting cylinder (20), the first sealing plug (21), the first protection plug (22) and the inner cavity of the first connecting head (23) form a first communication interface, the first protection cover (11) is mounted, and the corrosion monitoring device is mounted.
7. A method of removing a rotatable corrosion coupon device as defined in claim 1, wherein: the method comprises the following specific steps of disassembly of the power sulfur removal unit and disassembly of the corrosion monitoring unit:
a. power sulfur removal unit disassembly
a1, after residual gas in the power sulfur removal unit enters the treatment device through the first discharge valve (13) to be treated, the first protection cover (11) is opened, the first control rod (41) is rotated anticlockwise, the rotary blade (53) is rotated to a non-working state, the rotary wheel (5) stops rotating gradually, and the first control rod (41) is taken out;
a2, connecting the hanging piece taking and placing device with the first mounting cylinder (20), connecting the taking and placing rod with the first communication interface in a threaded manner in a rotating manner, enabling the first sealing plug (21) and the first protection plug (22) to move upwards, enabling residual gas to enter the processing device through the first communication interface, continuing to rotate the taking and placing rod, and enabling the first sealing plug (21) and the first protection plug (22) to be detached, wherein at the moment, the first sealing column (24) and the taking and placing rod are in threaded connection;
a3, rotating the taking and placing rod, moving the first sealing column (24) upwards, closing the first plug valve (32), enabling residual gas to enter the treatment device through the second discharge valve (34) to finish treatment, continuing rotating the taking and placing rod, taking out the first sealing column (24) from the first mounting cylinder (20), and finishing the disassembly of the power sulfur removal unit;
b. corrosion monitoring unit disassembly
b1, residual gas in the corrosion monitoring unit enters the treatment device through a third relief valve (17), a second protective cover (15) is opened, a hanging piece taking and placing device is arranged on a second installation cylinder (25), a taking and placing rod is in threaded connection with a second communication interface in a rotating mode, meanwhile, a second sealing plug (26) and a second protective plug (27) move upwards, the residual gas enters the treatment device through the second communication interface, the taking and placing rod is continuously rotated, the second sealing plug (26) and the second protective plug (27) are detached, and at the moment, a second sealing column (29) is in threaded connection with the taking and placing rod;
b2, rotating the taking and placing rod, moving the second sealing column (29) upwards, closing the second plug valve (36), enabling residual gas to enter the treatment device through the second discharge valve for treatment, continuing rotating the taking and placing rod, taking the second sealing column (29) out of the second mounting cylinder (25), and completing the disassembly of the power sulfur removal unit.
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| CN201711152759.1A CN107764727B (en) | 2017-11-19 | 2017-11-19 | Rotatable corrosion hanging piece device |
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| CN112051207B (en) * | 2020-09-13 | 2022-03-29 | 西南石油大学 | Online evaluation device and evaluation method for corrosion inhibitor coating effect of gas gathering pipeline in mountainous area |
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