CN112610797B - Protection device and protection method for damage and fracture of gas transmission pipeline - Google Patents
Protection device and protection method for damage and fracture of gas transmission pipeline Download PDFInfo
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- CN112610797B CN112610797B CN202011392935.0A CN202011392935A CN112610797B CN 112610797 B CN112610797 B CN 112610797B CN 202011392935 A CN202011392935 A CN 202011392935A CN 112610797 B CN112610797 B CN 112610797B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipeline Systems (AREA)
Abstract
The invention relates to the technical field of pipeline engineering construction, in particular to a protection device and a protection method for damage and fracture of a gas pipeline, which comprises a cylindrical main body; the inner wall of the main body is provided with a sealing part, and the sealing part comprises an air nozzle and an air bag; a groove is arranged on the inner wall of the main body along the radial direction; the air bag is arranged in the groove; one end of the air tap is communicated with the air bag; the other end of the air tap is arranged outside the main body; the main body comprises a left pipe and a right pipe connected with the left pipe through a clamping part; the left pipe and the right pipe are both of semi-cylindrical structures with the same structure, and the clamping part comprises a return groove and a bulge; the return groove is arranged at the end part of the left pipe; the bulge is arranged at the end part of the right pipe; the bulge is clamped in the return groove; also comprises a side pipe and a valve. The invention can not interrupt oil gas transmission, can effectively prevent accidents caused by oil gas leakage loss, ensures the safe operation of pipelines and effectively protects the environment.
Description
Technical Field
The invention relates to the technical field of pipeline engineering construction, in particular to a protection device and a protection method for damage and fracture of a gas transmission pipeline.
Background
In the pipeline construction, especially when the oil and gas pipeline runs under a high-pressure condition for a long time, the mechanical property of the metal pipeline can be gradually degraded, the problems existing in the pipeline welding seam and the tiny cracks generated due to stress corrosion can be expanded, when the cracks develop to a certain degree, sudden pipeline rupture accidents can be brought, the damage and rupture of the pipeline can possibly cause disastrous consequences, such as pipeline leakage and oil and gas loss, meanwhile, the leaked oil and gas can cause fire, explosion and other accidents, and the safety is poor; in addition, oil and gas leakage causes harm to the environment.
When large sudden pipeline leakage accidents occur, such as breakage, pipe explosion and the like, the accidents can be found in time due to sudden pressure loss of the pipeline, but the specific positions of the accidents need to be checked and determined on site. For small leak events, more advanced leak detection techniques are required. The leakage detection technology comprises two types of off-line detection and on-line monitoring:
(1) The off-line detection refers to the inspection of the pipeline periodically according to the requirement; leaks are discovered by observing the earth's surface, instrumental detection, or infrared imaging techniques, etc. Because the off-line detection is not performed in real time, the method generally cannot find and take corresponding measures in time after the leakage accident occurs;
(2) On-line monitoring is to dynamically monitor a pipeline through a leakage monitoring system specially installed on the pipeline, detect leakage information at the moment of leakage accident, send out alarm, rapidly calculate and determine the leakage position through a computer, and then take corresponding measures, such as cutting off a gas transmission source, but in this way, the gas transmission process is interrupted, and meanwhile, oil gas is still leaked from the gas transmission pipeline to cause loss, possibly causing accidents such as fire, explosion and the like.
Disclosure of Invention
In order to solve the technical problems caused by damage and breakage of the existing gas transmission pipeline, the invention provides the protection device and the protection method for damage and breakage of the gas transmission pipeline, which can not interrupt oil gas transmission, can effectively prevent accidents caused by oil gas leakage loss, ensure safe operation of the pipeline and effectively protect the environment.
In order to achieve the purpose, the invention adopts the technical scheme that:
a protective device for damage and fracture of a gas pipeline comprises a cylindrical main body; a sealing component is arranged on the inner wall of the main body; the sealing part comprises an air nozzle and an air bag; a groove is arranged on the inner wall of the main body along the radial direction; the air bag is arranged in the groove; one end of the air tap is communicated with the air bag; the other end of the air tap is arranged outside the main body.
Further, the main body comprises a left tube and a right tube connected with the left tube through a clamping component; the left pipe and the right pipe are both of semi-cylindrical structures with the same structure; grooves are formed in the inner wall of the left pipe and the inner wall of the right pipe in the radial direction.
Further, the clamping component comprises a return groove and a protrusion; the return groove is arranged at the end part of the left pipe; the bulge is arranged at the end part of the right pipe; the protrusion is clamped in the return groove.
Further, the protection device for gas transmission pipeline damage and breakage further comprises a side pipe arranged in parallel with the main body.
Furthermore, the protection device for damage and rupture of the gas transmission pipeline also comprises a valve arranged at the front end of the main body.
A method for protecting a gas pipeline from damage and rupture, comprising the steps of:
1) Determining a weak point of damage and rupture on a pipeline to be gas-transported;
2) Sleeving the main body on the gas transmission pipeline at the weak point, sealing the inner wall of the main body and the outer wall of the gas transmission pipeline through a sealing part, and sealing oil gas in the main body;
3) The valve is arranged at the front end of the weak point of the gas transmission pipeline to be protected; one end of the side pipe is arranged on the valve and is communicated with the gas pipeline to be protected; the other end of the side pipe is arranged at the rear end of the main body and communicated with the gas transmission pipeline to be protected, and oil gas passes through the side pipe by closing the control valve, so that the oil gas is continuously transmitted.
Further, the step 1) of determining the weak point includes:
1.1 Relevant backgrounds, technical conditions and geological conditions of the buried gas transmission pipeline during relevant oil and gas transmission are collected to form a complete database;
1.2 Predicting the possible positions of weak points by a probability statistical method, finding out the areas where oil leakage of the gas pipeline is easy to occur, and finding out the geological rules of the possible oil leakage positions;
1.3 The section with the oil leakage probability exceeding 95 percent on the gas transmission pipeline is judged according to the geological data, and the section is the weak point.
Further, the specific implementation process of the step 2) is that the left pipe and the right pipe are respectively sleeved on two axial sides of a weak point on the gas transmission pipeline; the bulge is linearly clamped into the return groove, and the left pipe and the right pipe are fixedly sleeved outside the weak point; and continuously inflating the air bag through the air tap, and filling the gap between the main body and the air transmission pipeline by expanding the air bag to realize sealing.
Further, the pressure of the air bag is P 1 The pressure of oil gas in the conveying pipeline is P 2 Said P is 1 >P 2 。
The invention has the beneficial effects that:
1. the invention provides a protective device for damage and fracture of a gas transmission pipeline, which comprises a cylindrical main body; the inner wall of the main body is provided with a sealing component. The closed part comprises an air nozzle and an air bag; a groove is arranged on the inner wall of the main body along the radial direction; the air bag is arranged in the groove; one end of the air nozzle is communicated with the air bag; the other end of the air tap is arranged outside the main body. The air bag plays a role in sealing after being inflated, prevents gas and liquid from leaking outside after sealing, has good safety and protects the environment from being polluted.
2. According to the invention, the main body comprises a left pipe and a right pipe connected with the left pipe through a clamping part; the left pipe and the right pipe are of semi-cylindrical structures with the same structure, grooves are formed in the inner wall of the left pipe and the inner wall of the right pipe in the radial direction, and the clamping component comprises a return groove and a protrusion; the return groove is arranged at the end part of the left pipe; the bulge is arranged at the end part of the right pipe; the protrusion is clamped in the return groove. When the return groove and the bulge are mutually matched, the left tube and the right tube can be quickly and tightly connected, and can be better matched when the air bag is inflated, and the air bag is more tightly matched with the air bag in an inflated way.
3. The protection device for damage and fracture of the gas transmission pipeline also comprises a side pipe and a valve, wherein the main body and the side pipe are arranged in parallel; the valve is arranged at the front end of the main body. Specifically, the valve is arranged at the front end of the weak point of the gas transmission pipeline to be protected; one end of the side pipe is arranged on the valve and is communicated with the gas pipeline to be protected; the main part rear end is arranged in to the side pipe other end and with wait to protect gas transmission pipeline intercommunication, through closing of control flap for when gas transmission pipeline takes place to break, oil gas can be followed in the side pipe and passed through, realizes oil gas continuous delivery, effectively prevents the problem that gas transmission interrupted.
4. According to the protection device provided by the invention, when protection is carried out, the weak point with the damage and breakage probability of more than 95% on the gas transmission pipeline is determined, the main body, the sealing part, the side pipe and the valve are mutually matched, the weak point with breakage is effectively protected, when breakage occurs, oil gas is sealed in the main body, safety accidents caused by leakage of the oil gas and the influence on the environment are avoided, meanwhile, continuous conveying of the oil gas is realized through the side pipe, and inconvenience caused by oil gas interruption is prevented.
Drawings
Fig. 1 is a schematic perspective view of a main body 1 according to the present invention;
FIG. 2 is an enlarged view of the joint between the left tube 11 and the right tube 12 in FIG. 1;
FIG. 3 is a schematic view showing the connection between the side pipe 3 and the valve 4 at the damaged and ruptured part of the gas transmission pipeline 2;
FIG. 4 is a schematic view of the application of the main body 1 provided by the present invention to the damaged and ruptured part of the gas transmission pipeline;
FIG. 5 is a front view of FIG. 4;
FIG. 6 is a schematic longitudinal cross-sectional view of FIG. 4;
wherein:
1-a main body; 11-left tube; 12-right tube; 13-returning to the tank; 14-a bump; 15-a groove; 16-air tap; 17-an air bag; 2-gas transmission pipeline; 3-side tube; 4-valve.
Detailed Description
The present invention will now be described in detail with reference to the drawings and examples.
Example 1
Referring to fig. 1, the protection device for damage and rupture of a gas transmission pipeline provided by the embodiment comprises a cylindrical main body 1; the inner wall of the main body 1 is provided with a sealing part.
In the present embodiment, referring to fig. 1 and 5, the main body 1 is a cylindrical structure, and the main body 1 includes a left tube 11 and a right tube 12 connected to the left tube 11 through a clamping member; the left tube 11 and the right tube 12 are both of semi-cylindrical structures with the same structure; the left tube 11 and the right tube 12 form a cylindrical body 1.
Referring to fig. 2, the catching member includes a return groove 13 and a protrusion 14; the return groove 13 is arranged at the end part of the left pipe 11; the bulge 14 is arranged at the end part of the right tube 12; the projection 14 snaps back into the slot 13. The return groove 13 is an arc-shaped groove, the protrusion 14 is a house-shaped protrusion matched with the return groove 13, and the protrusion 14 can be linearly clamped into the return groove 13, so that the left pipe 11 and the right pipe 12 are clamped and fixed.
Referring to fig. 6, the closing means includes an air nozzle 16 and an air bag 17; a groove 15 is arranged on the inner wall of the main body 1 along the radial direction; the air bag 17 is arranged in the groove 15; one end of the air nozzle 16 is communicated with the air bag 17; the other end of the air tap 16 is disposed outside the main body 1. The height of the grooves 15 is less than that of the main body 1, and the grooves 15 are distributed along the radial direction of the inner wall of the main body 1.
Referring to fig. 6, the left tube 11 and the right tube 12 have the same semi-cylindrical structure; a groove 15 is arranged on the inner wall of the right tube 12 along the radial direction, and an air bag 17 is arranged in the groove 15; one end of the air nozzle 16 is communicated with the air bag 17; the other end of the air tap 16 is disposed outside the main body 1. The inner wall of the left tube 11 and the inner wall of the right tube 12 have the same structure and are symmetrical with each other.
Example 2
Referring to fig. 3, in the present embodiment, the protection device for damage and rupture of the gas transmission pipeline further includes a side pipe 3; the side tube 3 is arranged in parallel with the main body 1. Two ends of a concrete side pipe 3 are respectively communicated with the gas transmission pipeline 2 to be protected.
In this embodiment, the protection device for damage and rupture of the gas transmission pipeline further comprises a valve 4; the valve 4 is arranged at the front end of the main body 1; specifically, the valve 4 is disposed on the gas transmission pipeline 2 to be protected.
In the embodiment, the valve 4 is arranged at the front end of the weak point of the gas transmission pipeline 2 to be protected; the side pipe 3 is a U-shaped pipe, one end of the side pipe 3 is arranged on the valve 4 and is communicated with the gas transmission pipeline 2 to be protected; the other end of the side pipe 3 is arranged at the rear end of the weak point of the gas transmission pipeline 2 to be protected and is communicated with the gas transmission pipeline 2 to be protected.
Example 3
The protection method for damage and fracture of the gas transmission pipeline provided by the embodiment comprises the following steps:
1) Determining a weak point of damage and rupture on the gas pipeline 2 to be transmitted;
specifically, 1.1) collecting relevant background, technical conditions and geological conditions when the buried gas transmission pipeline 2 is damaged during relevant oil gas transmission to form a complete database;
1.2 Predicting the possible positions of weak points by a probability statistical method, finding out the areas where oil leakage of the gas pipeline 2 is easy to occur, and finding out the geological rules of the possible oil leakage positions;
1.3 Judging a section with the oil leakage probability exceeding 95% on the gas pipeline 2 according to geological data, namely a weak point;
2) Sleeving the main body 1 on the gas transmission pipeline 2 at the weak point, sealing the inner wall of the main body 1 and the outer wall of the gas transmission pipeline 2 through a sealing part, and sealing oil gas in the main body 1;
specifically, referring to fig. 4, 5 and 6, the left tube 11 and the right tube 12 are respectively sleeved on two axial sides of a weak point on the gas transmission pipeline 2; the bulge 14 is linearly clamped into the return groove 13, and the left tube 11 and the right tube 11 are fixedly sleeved outside the weak point; the air bag 17 is continuously inflated through the air nozzle 16, and the air bag 17 is expanded to fill the gap between the main body 1 and the air transmission pipeline 2, so that sealing is realized.
3) The valve 4 is arranged at the front end of the weak point of the gas transmission pipeline 2 to be protected; one end of the side pipe 3 is arranged on the valve 4 and is communicated with the gas pipeline 2 to be protected; the other end of the side pipe 3 is arranged at the rear end of the main body 1 and communicated with the gas pipeline 2 to be protected, and oil gas passes through the side pipe 3 through closing of the control valve 4, so that continuous oil gas conveying is realized.
In this embodiment, the pressure of the air bag 17 is P 1 Pressure of oil and gas delivery is P 2 In practice, P needs to be satisfied 1 >P 2 The oil leak position can be plugged, and leakage of oil gas is effectively avoided.
In this embodiment, the valve 4 is electrically connected to the control switch on the ground, and the valve 4 is initially in an open state.
In this embodiment, the main body 1 composed of the left tube 11 and the right tube 12 has a sealing function, and is first connected with the protrusion 14 through the slot 13, and then the inner wall of the main body 1 is provided with the groove 15, the groove 15 is internally provided with the air bag 17, the air nozzle 16 inflates the air bag 17, and the air bag 17 expands to effectively fill the gap to play a sealing function;
when the gas transmission pipeline 2 is broken due to a weak point, oil gas and the like can be sealed in the main body 1 because the main body 1 is in sealed contact with the gas transmission pipeline 2, the oil gas cannot flow out, and the leakage problem of the oil gas is protected; meanwhile, when the air bag 17 is inflated, the return groove 13 and the bulge 14 are better matched, the closer the inflation is, the tighter the matching is, the oil gas is effectively sealed, and the problems of air leakage and liquid leakage of the conveying pipeline are solved, so that accidents are effectively avoided, and the pollution of oil gas leakage to the environment is effectively avoided;
meanwhile, when the weak point of the gas transmission pipeline 2 is broken, the monitoring system on the ground sends an alarm, the valve 4 is closed through the control switch on the ground, the gas transmission pipeline 2 is closed by the valve 4, the transmitted oil gas cannot pass through the gas transmission pipeline 2 and flows through the section from the side pipe 3 until the oil gas passes through the weak point, the oil gas transmission is not interrupted, and therefore the normal and safe operation of the oil gas transmission work is guaranteed.
Claims (2)
1. An online protection method for damage and fracture of an underground gas transmission pipeline is characterized by comprising the following steps: the method is realized by a damage and fracture protection device of the underground gas transmission pipeline;
the damage and fracture protection device for the underground gas transmission pipeline comprises a cylindrical main body (1) sleeved on the underground gas transmission pipeline (2); the inner wall of the main body (1) is provided with a sealing component; the sealing part comprises an air nozzle (16) and an air bag (17); a groove (15) is arranged on the inner wall of the main body (1) along the radial direction; the air bag (17) is arranged in the groove (15); one end of the air nozzle (16) is communicated with the air bag (17); the other end of the air tap (16) is arranged outside the main body (1); the main body (1) comprises a left pipe (11) and a right pipe (12) connected with the left pipe (11) through a clamping component; the left pipe (11) and the right pipe (12) are both of semi-cylindrical structures with the same structure; grooves (15) are arranged on the inner wall of the left pipe (11) and the inner wall of the right pipe (12) along the radial direction; the clamping component comprises a return groove (13) and a protrusion (14); the return groove (13) is arranged at the end part of the left pipe (11); the bulge (14) is arranged at the end part of the right pipe (12); the bulge (14) is clamped in the return groove (13) and is in arc surface contact;
the protection method comprises the following steps:
1) Determining a weak point of damage and rupture on the underground gas transmission pipeline (2);
the process of determining the vulnerability includes:
1.1 Relevant backgrounds, technical conditions and geological conditions of the buried gas pipeline (2) during damage during relevant oil and gas transportation are collected to form a complete database;
1.2 Predicting the possible position of the weak point by a probability statistical method, finding out the region where oil leakage of the underground gas transmission pipeline (2) is easy to occur, and finding out the geological rule of the possible oil leakage position;
1.3 Judging a section with the oil leakage probability exceeding 95% on the underground gas transmission pipeline (2) according to geological data, wherein the section is a weak point;
2) The main body (1) is sleeved at the weak point of the underground gas transmission pipeline (2), the inner wall of the main body (1) and the outer wall of the underground gas transmission pipeline (2) are sealed through a sealing part, and oil gas is sealed in the main body (1);
the concrete implementation process is that the left pipe (11) and the right pipe (12) are respectively sleeved on two axial sides of a weak point on the underground gas transmission pipeline (2); the bulge (14) is clamped back into the groove (13) to form arc surface contact, and the left pipe (11) and the right pipe (12) are fixedly sleeved outside the weak point; continuously inflating the air bag (17) through the air nozzle (16), and inflating the air bag (17) to fill a gap between the main body (1) and the underground gas transmission pipeline (2);
3) The valve (4) is arranged at the front end of the weak point of the buried gas transmission pipeline (2) to be protected; one end of the side pipe (3) is arranged on the valve (4) and is communicated with the buried gas transmission pipeline (2) to be protected; the other end of the side pipe (3) is arranged at the rear end of the main body (1) and communicated with the buried gas transmission pipeline (2) to be protected, and oil gas passes through the side pipe (3) by closing the control valve (4), so that continuous oil gas transmission is realized, and online protection of damage and breakage of the buried gas transmission pipeline is completed.
2. The in-situ damage and fracture on-line protection method for the underground gas transmission pipeline as claimed in claim 1, wherein: the pressure of the air bag (17) is P1, the pressure of oil gas in the underground gas transmission pipeline (2) is P2, and the P1> P2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011392935.0A CN112610797B (en) | 2020-12-02 | 2020-12-02 | Protection device and protection method for damage and fracture of gas transmission pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011392935.0A CN112610797B (en) | 2020-12-02 | 2020-12-02 | Protection device and protection method for damage and fracture of gas transmission pipeline |
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| CN112610797A CN112610797A (en) | 2021-04-06 |
| CN112610797B true CN112610797B (en) | 2023-03-10 |
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| CN202011392935.0A Active CN112610797B (en) | 2020-12-02 | 2020-12-02 | Protection device and protection method for damage and fracture of gas transmission pipeline |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114909542A (en) * | 2022-06-06 | 2022-08-16 | 国家石油天然气管网集团有限公司 | Oil and gas pipeline defect repairing device and method |
| CN117128386A (en) * | 2023-10-26 | 2023-11-28 | 无棣海忠软管制造有限公司 | Metal pipeline repairing device for ocean engineering |
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| CN204962097U (en) * | 2015-08-24 | 2016-01-13 | 力帆实业(集团)股份有限公司 | Pipe clip tie member |
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