CN114542986B - Liquid carbon dioxide low-temperature closed injection device - Google Patents
Liquid carbon dioxide low-temperature closed injection device Download PDFInfo
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- CN114542986B CN114542986B CN202210432631.5A CN202210432631A CN114542986B CN 114542986 B CN114542986 B CN 114542986B CN 202210432631 A CN202210432631 A CN 202210432631A CN 114542986 B CN114542986 B CN 114542986B
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- pipe
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- joint
- carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
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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
- F16L55/04—Devices damping pulsations or vibrations in fluids
- F16L55/045—Devices damping pulsations or vibrations in fluids specially adapted to prevent or minimise the effects of water hammer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/18—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/20—Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells
Abstract
The invention discloses a liquid carbon dioxide low-temperature closed injection device which comprises a plunger pump, a motor, a communicating pipeline, an electromagnetic heater and a plurality of control valves, wherein the output end and the input end of the plunger pump are connected with the communicating pipeline. According to the invention, the first joint is pushed to gradually approach the inner pipe through the flow of liquid carbon dioxide, the first joint utilizes the second movable rod and the second sliding ring to enable the plurality of pull ropes on the right side to pull the second sliding plate to move downwards, the second sliding plate utilizes the screw rod to drive the sliding block to slide on the inclined ring surface of the second through pipe, and the sliding friction between the sliding block and the inclined ring surface is utilized to prevent the second sliding plate from swaying arbitrarily inside the sealing ring, so that the stability of the inner pipe inside the sealing ring is ensured, the stability of the liquid carbon dioxide flowing from the first through pipe to the second through pipe is ensured, the damage of the communication pipeline caused by the water hammer effect generated by the liquid carbon dioxide flowing inside the communication pipeline is avoided, and the sealing property of the communication pipeline is improved.
Description
Technical Field
The invention belongs to the technical field of liquid carbon dioxide injection, and particularly relates to a low-temperature closed injection device for liquid carbon dioxide.
Background
The oilfield carbon dioxide injection technology is a technology for injecting collected liquid carbon dioxide into an oil layer so as to achieve the purposes of improving the crude oil recovery rate and utilizing and sealing carbon dioxide. The equipment used for injecting liquid low-temperature carbon dioxide in the carbon dioxide injection process is called a liquid carbon dioxide injection device.
At present, the connecting line usually adopts the clamp connection at the plunger pump export on: firstly, the communicating pipeline is sleeved on a liquid inlet and a liquid outlet of the plunger pump, and then the connecting pipeline is fixed by utilizing the clamp. The connection mode is poor in sealing performance and unstable in connection, and the requirement that the plunger pump cannot transport and convey liquid carbon dioxide is met.
Therefore, it is necessary to provide a low-temperature sealed injection device for liquid carbon dioxide to solve the above problems.
Disclosure of Invention
In view of the above problems, the present invention provides a low-temperature closed injection device for liquid carbon dioxide, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a low-temperature closed injection device for liquid carbon dioxide comprises a plunger pump, a motor, a communicating pipeline, an electromagnetic heater and a plurality of control valves, wherein the output end and the input end of the plunger pump are both connected with the communicating pipeline, the electromagnetic heater is sleeved on the surface of the communicating pipeline at the output end of the plunger pump in a sleeving manner, and the plunger pump, the motor, the communicating pipeline, the electromagnetic heater and the plurality of control valves are all arranged on a skid block base inside a skid-mounted room;
the communicating pipeline comprises a first through pipe and a second through pipe, the first through pipe and the second through pipe are correspondingly communicated, a sealing ring is sleeved at the joint of the first through pipe and the second through pipe in an annular manner, and the first through pipe and the second through pipe are both connected with the sealing ring through screws;
the shaft coupling of plunger pump passes through the belt conveying with the motor output shaft and is connected, and a plurality of control valve are including setting up the check valve on plunger pump output end communicating line to and set up the relief valve on plunger pump output end communicating line.
Further, the circumference outside limit of first siphunculus and second siphunculus link all is provided with the slope anchor ring, the profile appearance of first siphunculus and second siphunculus link slope anchor ring all sets up to isosceles trapezoid structure, and the diameter of first siphunculus and second siphunculus is the same with slope anchor ring outside diameter, the inboard diameter of slope anchor ring is greater than outside diameter, and the outside surface of sealing ring cover and slope anchor ring.
Further, the equal annular equidistance of slope ring surface of first siphunculus and second siphunculus is provided with a plurality of logical grooves, and the one-to-one laminating is provided with a plurality of sliders on the logical groove of slope ring off-plate surface side, the screw rod runs through slider and logical groove, the equal annular equidistance in sealing ring inside part both sides is provided with a plurality of standing grooves, lead to groove and standing groove one-to-one, and lead to the groove and correspond the intercommunication with the standing groove, two relative standing groove inboards are provided with first slide and second slide respectively, and first slide and second slide set up with sealing ring central plane symmetry, first slide and second slide outside end respectively with two screw rod threaded connection.
Furthermore, the inner side face of the sliding block is correspondingly matched with the inclined ring face, the outer side face of the sliding block is arranged to be a vertical plane, the screw rod penetrates through the vertical plane of the sliding block, and the screw rod is in sliding fit with the through groove of the inclined ring face through the sliding block.
Further, the circumference medial surface that leads to the groove runs through the sealing ring medial surface, the side of first slide and second slide all is provided with the spout, the sealing ring both sides face all runs through and is provided with the kelly, kelly one end is in the spout inboard, and the kelly other end is in and leads to the inslot side, it is provided with the spring to lead to inslot portion, the kelly tip passes through spring and leads to inslot lateral wall fixed connection.
Further, the sealing ring center department is provided with the inner tube, the inner tube both ends are provided with first sliding ring and second sliding ring respectively, first sliding ring and second sliding ring opposite flank respectively fixed mounting have first movable rod and second movable rod, first movable rod one end and first sliding ring medial surface fixed connection, and the first movable rod other end runs through the second sliding ring, second movable rod one end and second sliding ring medial surface fixed connection, and the second movable rod other end with run through first sliding ring.
Furthermore, the end parts of the inner sides of the first sliding plate and the second sliding plate are fixedly connected with one end of a pull rope, the first sliding plate is fixedly connected with the first sliding ring through the pull rope, the second sliding plate is fixedly connected with the second sliding ring through the pull rope, and a plurality of movable grooves which are correspondingly matched with the first movable rod and the second movable rod are formed in the side edge of the inner tube.
Furthermore, the inside first joint and the second joint of pegging graft respectively in inner tube both ends, the inside opening that utilizes of first joint and second joint passes through the inner tube intercommunication, the circumference lateral surface of first joint and second joint medial extremity all is provided with a plurality of sand grips, the circumference medial surface of inner tube is provided with the strip groove that corresponds with the sand grip, and first joint and second joint all utilize the strip groove sliding fit of sand grip and inner tube.
Further, the inboard fixedly connected with first ring frame of first siphunculus, the inboard fixedly connected with second ring frame of second siphunculus, the circumference lateral surface of first joint and second joint outside end all is provided with the annular that first ring frame and second ring frame correspond the matching.
The invention has the technical effects and advantages that:
1. according to the invention, the first joint is pushed to gradually approach the inner pipe through the flow of liquid carbon dioxide, the first joint utilizes the second movable rod and the second sliding ring to enable the plurality of pull ropes on the right side to pull the second sliding plate to move downwards, the second sliding plate utilizes the screw rod to drive the sliding block to slide on the inclined ring surface of the second through pipe, and the sliding friction between the sliding block and the inclined ring surface is utilized to prevent the second sliding plate from swaying arbitrarily inside the sealing ring, so that the stability of the inner pipe inside the sealing ring is ensured, the stability of the liquid carbon dioxide flowing from the first through pipe to the second through pipe is ensured, the damage of the communication pipeline caused by the water hammer effect generated by the liquid carbon dioxide flowing inside the communication pipeline is avoided, and the sealing property of the communication pipeline is improved.
2. According to the invention, the first sliding plate or the second sliding plate can slide on the inner side of the placing groove by the pulling force of the pull rope, the first sliding plate or the second sliding plate can also extrude the spring by the clamping rod, the first sliding plate or the second sliding plate can move by driving the sliding block to slide on the inclined ring surface by the screw rod, so that the sliding block is gradually close to the circumferential outer side surface of the first through pipe or the second through pipe, the first sliding plate or the second sliding plate is prevented from arbitrarily shaking on the inner side of the sealing ring by the sliding friction between the sliding block and the inclined ring surface, the first through pipe or the second through pipe is prevented from causing excessive pressure on the side surface of the sealing ring, and the service life of the sealing ring is prolonged.
3. According to the invention, after the first through pipe corresponds to the sealing ring, the plurality of sliding blocks are correspondingly placed on the inclined ring surface of the first through pipe, the sliding blocks correspond to the outer side ends of the through grooves one by one, the sliding blocks sequentially penetrate through the sliding blocks and the through grooves by using the screw rods, the screw rods are recently in threaded connection with the outer side ends of the first sliding plates, the first sliding plates and the clamping rods can extrude the springs by the screw rods and the spiral effect of the screw rods and the first sliding plates, at the moment, the inner side surfaces of the sliding blocks are tightly attached to the inclined ring surface of the first through pipe by using the elastic force of the springs and the screw rods, and at the moment, the sliding blocks ensure the stability of the first sliding ring on the inner side of the sealing ring by using the screw rods, the first sliding plates and the plurality of pull ropes.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows an overall circuit diagram of a liquid carbon dioxide cryogenic seal injection device of an embodiment of the present invention;
FIG. 2 shows an overall perspective view of a communication line of an embodiment of the present invention;
FIG. 3 shows a schematic top view of a communication line according to an embodiment of the present invention;
FIG. 4 shows a schematic cross-sectional view of a communication line according to an embodiment of the invention;
FIG. 5 shows an enlarged view of the portion A of FIG. 4 in accordance with an embodiment of the present invention;
in the figure: 1. a plunger pump; 2. a communication line; 3. an electromagnetic heater; 4. a first through pipe; 5. a second pipe; 6. a seal ring; 7. a screw; 8. a check valve; 9. a safety valve; 10. an inclined torus; 11. a through groove; 12. a slider; 13. a placement groove; 14. a first slide plate; 15. a second slide plate; 16. a chute; 17. a clamping rod; 18. a spring; 19. an inner tube; 20. a first slip ring; 21. a second slip ring; 22. a first movable bar; 23. a second movable bar; 24. pulling a rope; 25. a movable groove; 26. a first joint; 27. a second joint; 28. a port; 29. a convex strip; 30. a strip groove; 31. a first ring frame; 32. a second ring frame; 33. and a ring groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a liquid carbon dioxide low-temperature closed injection device, which comprises a plunger pump 1, a motor, a communicating pipeline 2, an electromagnetic heater 3 and a plurality of control valves, wherein the output end and the input end of the plunger pump 1 are connected with the communicating pipeline 2, the electromagnetic heater 3 is sleeved on the surface of the communicating pipeline 2 at the output end of the plunger pump 1, and the plunger pump 1, the motor, the communicating pipeline 2, the electromagnetic heater 3 and the plurality of control valves are all arranged on a skid block base inside a skid-mounted room; the communicating pipeline 2 comprises a first through pipe 4 and a second through pipe 5, the first through pipe 4 is correspondingly communicated with the second through pipe 5, a sealing ring 6 is sleeved at the joint of the first through pipe 4 and the second through pipe 5 in an annular mode, and the first through pipe 4 and the second through pipe 5 are both connected with the sealing ring 6 through a screw 7; the shaft coupling of plunger pump 1 passes through the belt transmission with the motor output shaft and is connected, and a plurality of control flap are including setting up check valve 8 on 1 output intercommunication pipeline 2 of plunger pump to and set up relief valve 9 on 1 output intercommunication pipeline 2 of plunger pump. When liquid carbon dioxide lets in 1 inside of plunger pump through communicating line 2, utilize check valve 8 can avoid liquid carbon dioxide to flow backwards in 2 inboard communicating lines of 1 input of plunger pump, guarantee the single flow direction of liquid carbon dioxide 2 inboards at 1 input communicating line of plunger pump, relief valve 9 guarantees the stability of liquid carbon dioxide at the inside circulation of 1 output communicating line 2 of plunger pump, avoids liquid carbon dioxide to reveal.
In fig. 2, 3 and 5, the circumference outside limit of first siphunculus 4 and second siphunculus 5 link all is provided with slope anchor ring 10, the profile appearance of first siphunculus 4 and second siphunculus 5 link slope anchor ring 10 all sets up to isosceles trapezoid structure, and the diameter of first siphunculus 4 and second siphunculus 5 is the same with slope anchor ring 10 outside diameter, the inside diameter of slope anchor ring 10 is greater than the outside diameter, and sealing ring 6 ring cover and the outside surface of slope anchor ring 10. The equal annular equidistance in slope anchor ring 10 surface of first siphunculus 4 and second siphunculus 5 is provided with a plurality of logical grooves 11, and the one-to-one laminating is provided with a plurality of sliders 12 on leading to groove 11 of slope anchor ring 10 lateral surface, screw rod 7 runs through slider 12 and leads to groove 11, the equal annular equidistance in 6 inside portion both sides of sealing ring is provided with a plurality of standing grooves 13, lead to groove 11 and standing groove 13 one-to-one, and lead to groove 11 and standing groove 13 and correspond the intercommunication, two relative standing grooves 13 inboards are provided with first slide 14 and second slide 15 respectively, and first slide 14 and second slide 15 set up with 6 central planes of sealing ring symmetry, first slide 14 and 15 outside ends of second slide respectively with two screw rod 7 threaded connection. The inner side face of the sliding block 12 is correspondingly matched with the inclined ring face 10, the outer side face of the sliding block 12 is set to be a vertical plane, the screw 7 penetrates through the vertical plane of the sliding block 12, and the screw 7 is in sliding fit with the through groove 11 of the inclined ring face 10 through the sliding block 12. The pulling force of the pulling rope 24 enables the first sliding plate 14 or the second sliding plate 15 to slide on the inner side of the placing groove 13, meanwhile, the first sliding plate 14 or the second sliding plate 15 can also extrude the spring 18 through the clamping rod 17, the first sliding plate 14 or the second sliding plate 15 can move through the screw 7 to drive the sliding block 12 to slide on the inclined ring surface 10, the sliding block 12 is enabled to be gradually close to the circumferential outer side surface of the first through pipe 4 or the second through pipe 5, the sliding friction between the sliding block 12 and the inclined ring surface 10 is utilized to avoid random shaking of the first sliding plate 14 or the second sliding plate 15 on the inner side of the sealing ring 6, excessive pressure on the side surface of the sealing ring 6 caused by the first through pipe 4 or the second through pipe 5 is prevented, and the service life of the sealing ring 6 is prolonged.
In fig. 5, the circumference medial surface that leads to groove 11 runs through sealing ring 6 medial surface, the side of first slide 14 and second slide 15 all is provided with spout 16, 6 both sides of sealing ring all run through and are provided with kelly 17, kelly 17 one end is in spout 16 inboardly, and the kelly 17 other end is in and leads to groove 11 inboardly, it is provided with spring 18 to lead to the inslot of groove 11, kelly 17 tip passes through spring 18 and leads to groove 11 inside wall fixed connection. After the first through pipe 4 corresponds to the sealing ring 6, a plurality of sliding blocks 12 are correspondingly placed on the inclined ring surface 10 of the first through pipe 4, and the slide block 12 corresponds to the outer side end of the through groove 11 one by one, the screw 7 sequentially penetrates through the slide block 12 and the through groove 11, the screw 7 is in threaded connection with the outer side end of the first slide plate 14 recently, the screw 7 and the first slide plate 14 can enable the first slide plate 14 and the clamping rod 17 to extrude the spring 18, at the moment, the elastic force of the spring 18 is utilized to enable the inner side face of the slide block 12 to be tightly attached to the inclined ring face 10 of the first through pipe 4 through the screw 7, at the moment, the slide block 12 utilizes the screw 7, the first slide plate 14 and the pull ropes 24 to ensure the stability of the first slide ring 20 on the inner side of the sealing ring 6, and similarly, the second through pipe 5 can be correspondingly connected with the sealing ring 6, at the moment, the slide block 12 utilizes the screw 7, the second slide plate 15 and the pull ropes 24 to ensure the stability of the second slide ring 21 on the inner side of the sealing ring 6.
In fig. 4, an inner tube 19 is disposed at the center of the sealing ring 6, a first sliding ring 20 and a second sliding ring 21 are disposed at two ends of the inner tube 19, a first movable rod 22 and a second movable rod 23 are fixedly mounted on opposite side surfaces of the first sliding ring 20 and the second sliding ring 21, one end of the first movable rod 22 is fixedly connected with an inner side surface of the first sliding ring 20, the other end of the first movable rod 22 penetrates through the second sliding ring 21, one end of the second movable rod 23 is fixedly connected with an inner side surface of the second sliding ring 21, and the other end of the second movable rod 23 penetrates through the first sliding ring 20. The end parts of the inner sides of the first sliding plate 14 and the second sliding plate 15 are fixedly connected with one end of a pull rope 24, the first sliding plate 14 is fixedly connected with the first sliding ring 20 through the pull rope 24, the second sliding plate 15 is fixedly connected with the second sliding ring 21 through the pull rope 24, and the side of the inner tube 19 is provided with a plurality of movable grooves 25 correspondingly matched with the first movable rod 22 and the second movable rod 23. The thrust of the liquid carbon dioxide on the first joint 26 in turn causes the first joint 26 to move inside the first ring 31 by means of the annular groove 33, with the first joint 26 gradually approaching the inner tube 19. The inner end of the first joint 26 slides inside the groove 30 inside the inner tube 19 by the convex strip 29, at this time, the first joint 26 pushes the second movable rod 23 to move, while the second movable rod 23 slides inside the movable groove 25 of the inner tube 19, the second movable rod 23 drives the second sliding ring 21 to slide on the surface of the second joint 27, at this time, the second sliding ring 21 pulls the second sliding plate 15 to move downwards by the plurality of pull ropes 24 on the right side, the second sliding plate 15 slides on the end of the clamping rod 17 by the sliding chute 16 in the process of moving downwards inside the placing groove 13, at this time, the pull force of the pull ropes 24 on the second sliding plate 15 makes the second sliding plate 15 continue to extrude the spring 18 by the clamping rod 17, the impact force of the liquid carbon dioxide on the first joint 26 is absorbed by the elastic force of the spring 18, at this time, while the second sliding plate 15 slides inside the through groove 11 by the screw 7, the second sliding plate 15 drives the sliding block 12 to slide on the inclined ring surface 10 of the second through tube 5 by the screw 7, and the slider 12 is close to the circumference lateral surface of second siphunculus 5 gradually, utilizes the sliding friction between slider 12 and the slope anchor ring 10 to avoid second slide 15 to rock wantonly at the sealing ring 6 inboard, and then guarantees the stability of inner tube 19 at the sealing ring 6 inboard to guarantee the stability that liquid carbon dioxide flows from first siphunculus 4 to second siphunculus 5, avoid liquid carbon dioxide to make the communicating pipe 2 damage at the inside water hammer effect that circulates and produce of communicating pipe 2, improve the leakproofness of communicating pipe 2.
In fig. 4, a first joint 26 and a second joint 27 are respectively inserted into two ends of the inner pipe 19, the inside of the first joint 26 and the inside of the second joint 27 are communicated through the inner pipe 19 by using a port 28, a plurality of convex strips 29 are arranged on the outer circumferential surface of the inner side end of the first joint 26 and the second joint 27, a strip groove 30 corresponding to the convex strip 29 is arranged on the inner circumferential surface of the inner pipe 19, and the first joint 26 and the second joint 27 are matched with the strip groove 30 of the inner pipe 19 in a sliding mode by using the convex strip 29. The inclined ring surface 10 of the first through pipe 4 is arranged corresponding to the inclined ring surface 10 of the second through pipe 5, the inner side end of the first through pipe 4 and the inner side end of the second through pipe 5 are respectively attached to two side surfaces of the sealing ring 6 correspondingly, when the first through pipe 4 corresponds to one side surface of the sealing ring 6, the inner side end of a first joint 26 rotationally clamped and connected to the inner side of the first through pipe 4 through a first ring frame 31 is inserted into the inner side of one end of the inner pipe 19, and the convex strip 29 on the outer side surface of the inner side end of the first joint 26 is in sliding fit with the strip groove 30 on the circumferential inner side surface of the inner pipe 19; meanwhile, when the second pipe 5 corresponds to the other side of the sealing ring 6, the inner side of the second pipe 5 is connected to the inner side of the other end of the inner pipe 19 by the rotation and clamping of the second ring frame 32, the convex strip 29 on the outer side of the inner side of the second joint 27 is in sliding fit with the strip groove 30 on the inner side of the circumference of the inner pipe 19, and the first pipe 4 is communicated with the second pipe 5 by the through hole 28 of the first joint 26, the inner pipe 19 and the through hole 28 of the second joint 27.
In fig. 4, the inner side of the first through pipe 4 is fixedly connected with a first ring frame 31, the inner side of the second through pipe 5 is fixedly connected with a second ring frame 32, and the outer side faces of the circumferences of the outer ends of the first joint 26 and the second joint 27 are respectively provided with a first ring frame 31 and a ring groove 33 which is correspondingly matched with the second ring frame 32. The first joint 26 and the second joint 27 can slide and rotate inside the first ring frame 31 and the second ring frame 32 respectively by the ring groove 33, and when the first joint 26 rotates inside the first ring frame 31 by the ring groove 33, the raised strips 29 on the outer side surface of the inner side end of the first joint 26 can be in one-to-one correspondence with the grooves 30 on the inner side surface of the inner pipe 19, so that the clamping matching effect of the first joint 26 and the inner pipe 19 is improved.
The working principle of the invention is as follows:
referring to the attached drawings 1-5 in the specification, when liquid carbon dioxide is introduced into the plunger pump 1 through the communication pipeline 2, the liquid carbon dioxide can be prevented from flowing backwards inside the communication pipeline 2 at the input end of the plunger pump 1 by the check valve 8, the single flow direction of the liquid carbon dioxide inside the communication pipeline 2 at the input end of the plunger pump 1 is ensured, the stability of the liquid carbon dioxide flowing inside the communication pipeline 2 at the output end of the plunger pump 1 is ensured by the safety valve 9, and the leakage of the liquid carbon dioxide is avoided.
When 1 input or output of plunger pump and intercommunication pipeline 2 communicate, 1 output or input of plunger pump can set up to first siphunculus 4 or second siphunculus 5 of intercommunication pipeline 2 this moment, conveniently reaches the intercommunication effect that intercommunication pipeline 2 connects plunger pump 1, when communicating two intercommunication pipelines 2, can utilize first siphunculus 4 and second siphunculus 5 to correspond the mode of intercommunication to make two intercommunication pipelines 2 communicate.
When the communicating pipeline 2 needs to be communicated by using the first through pipe 4 and the second through pipe 5, the inclined ring surface 10 of the first through pipe 4 and the inclined ring surface 10 of the second through pipe 5 are correspondingly arranged, the inner side end of the first through pipe 4 and the inner side end of the second through pipe 5 are correspondingly attached to two side surfaces of the sealing ring 6 respectively, when the first through pipe 4 corresponds to one side surface of the sealing ring 6, the inner side end of the first joint 26 rotationally clamped and connected to the inner side of the first through pipe 4 by using the first ring frame 31 is inserted into the inner side of one end of the inner pipe 19, and the convex strip 29 on the outer side surface of the inner side end of the first joint 26 is in sliding fit with the strip groove 30 on the inner side surface of the circumference of the inner pipe 19; meanwhile, when the second pipe 5 corresponds to the other side of the sealing ring 6, the inner side of the second pipe 5 is connected to the inner side of the other end of the inner pipe 19 by the rotation and clamping of the second ring frame 32, the convex strip 29 on the outer side of the inner side of the second joint 27 is in sliding fit with the strip groove 30 on the inner side of the circumference of the inner pipe 19, and the first pipe 4 is communicated with the second pipe 5 by the through hole 28 of the first joint 26, the inner pipe 19 and the through hole 28 of the second joint 27.
The first through pipe 4 and the second through pipe 5 are required to be correspondingly connected to two side faces of the sealing ring 6, after the first through pipe 4 corresponds to the sealing ring 6, the plurality of sliding blocks 12 are correspondingly placed on the inclined ring face 10 of the first through pipe 4, the sliding blocks 12 correspond to the outer ends of the through grooves 11 one by one, the sliding blocks 12 and the through grooves 11 sequentially penetrate through the screw rods 7, the screw rods 7 are recently in threaded connection with the outer ends of the first sliding plates 14, the first sliding plates 14 and the clamping rods 17 can extrude the springs 18 by the screw effects of the screw rods 7 and the first sliding plates 14, and at the moment, the inner side faces of the sliding blocks 12 are tightly attached to the inclined ring face 10 of the first through pipe 4 by the elastic force of the springs 18 and the screw rods 7; similarly, second siphunculus 5 corresponds the back with sealing ring 6, place a plurality of sliders 12 correspondence on the slope anchor ring 10 of second siphunculus 5, and slider 12 and the outside end one-to-one that leads to groove 11, utilize screw rod 7 to run through slider 12 and lead to groove 11 in proper order, recently with the outside end threaded connection of screw rod 7 with second slide 15, screw rod 7 can make second slide 15 utilize kelly 17 to extrude spring 18 with the spiral effect of second slide 15, utilize spring 18's elasticity and then utilize screw rod 7 to hug closely slider 12 medial surface on the slope anchor ring 10 of second slide 15 this moment, first siphunculus 4 utilizes sealing ring 6 and second siphunculus 5 to communicate this moment.
After the liquid carbon dioxide is introduced into the first through pipe 4, the liquid carbon dioxide contacts the first ring frame 31 in the process of moving inside the first through pipe 4, and due to the limitation of the first ring frame 31 on the liquid carbon dioxide, the moving speed of the liquid carbon dioxide on the inner side of the first through pipe 4 is increased, after the liquid carbon dioxide contacts the first joint 26 on the inner side of the first ring frame 31, the thrust of the liquid carbon dioxide on the first joint 26 further enables the first joint 26 to move on the inner side of the first ring frame 31 by using the ring groove 33, and at the moment, the first joint 26 is gradually close to the inner pipe 19. The inner end of the first joint 26 slides inside the groove 30 inside the inner tube 19 by the convex strip 29, at this time, the first joint 26 pushes the second movable rod 23 to move, while the second movable rod 23 slides inside the movable groove 25 of the inner tube 19, the second movable rod 23 drives the second slide ring 21 to slide on the surface of the second joint 27, at this time, the second slide ring 21 pulls the second slide plate 15 to move downwards by the plurality of pull ropes 24 on the right side, the second slide plate 15 slides at the end of the clamping rod 17 by the slide groove 16 during the process of moving downwards inside the placing groove 13, at this time, the pulling force of the pull ropes 24 on the second slide plate 15 causes the second slide plate 15 to continue to extrude the spring 18 by the clamping rod 17, the impact force of the first joint 26 by the liquid carbon dioxide is absorbed by the elastic force of the spring 18, at this time, while the second slide plate 15 slides inside the through groove 11 by the screw 7, the second slide plate 15 drives the slide block 12 to slide on the inclined ring surface 10 of the second through tube 5 by the screw 7, and the slider 12 is close to the circumference lateral surface of second siphunculus 5 gradually, utilizes the sliding friction between slider 12 and the slope anchor ring 10 to avoid second slide 15 to rock wantonly at the sealing ring 6 inboard, and then guarantees the stability of inner tube 19 at the sealing ring 6 inboard to guarantee the stability that liquid carbon dioxide flows from first siphunculus 4 to second siphunculus 5, avoid liquid carbon dioxide to make the communicating pipe 2 damage at the inside water hammer effect that produces of communicating pipe 2 inside circulation.
Similarly, the liquid carbon dioxide can be led into the first through pipe 4 from the second through pipe 5, and at the moment, the first sliding plate 14, the screw rod 7 and the sliding block 12 are matched, so that the sliding friction between the sliding block 12 and the inclined ring surface 10 is conveniently utilized to avoid the first sliding plate 14 from shaking arbitrarily inside the sealing ring 6, and further, the stability of the inner pipe 19 inside the sealing ring 6 is ensured, and the stability of the liquid carbon dioxide flowing from the second through pipe 5 to the first through pipe 4 is ensured.
Utilize the intercommunication cooperation of first joint 26, inner tube 19 and second joint 27, avoid liquid carbon dioxide to contact sealing ring 6 to reduce the freezing damage of liquid carbon dioxide to first siphunculus 4 and second siphunculus 5 coupling part flange, when inner tube 19 damaged in freezing situation, sealing ring 6 can guarantee the sealed effect of first siphunculus 4 and second siphunculus 5 junction this moment, avoid liquid carbon dioxide to spill. At this time, the introduction of liquid carbon dioxide is stopped, the screw 7 is unscrewed, the first through pipe 4 and the second through pipe 5 are both separated from the sealing ring 6, the pull rope 24 is cut off, a new inner pipe 19 is placed on the inner side of the sealing ring 6, an appropriate inner pipe 19 can be selected according to the outer diameters of the inner ends of the first joint 26 and the second joint 27, and then the pull rope 24 is bolted to the first sliding ring 20 and the second sliding ring 21 again, so that the continuous working effect of the whole communication pipeline 2 can be improved, and the adaptability of the sealing ring 6 to different first joints 26 and second joints 27 is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a liquid carbon dioxide low temperature is airtight injection device which characterized in that: the device comprises a plunger pump (1), a motor, a communicating pipeline (2), an electromagnetic heater (3) and a plurality of control valves, wherein the output end and the input end of the plunger pump (1) are connected with the communicating pipeline (2), the electromagnetic heater (3) is sleeved on the surface of the communicating pipeline (2) at the output end of the plunger pump (1), and the plunger pump (1), the motor, the communicating pipeline (2), the electromagnetic heater (3) and the plurality of control valves are all arranged on a skid block base inside a skid-mounted room;
the communicating pipeline (2) comprises a first through pipe (4) and a second through pipe (5), the first through pipe (4) is correspondingly communicated with the second through pipe (5), a sealing ring (6) is sleeved at the joint of the first through pipe (4) and the second through pipe (5), and the first through pipe (4) and the second through pipe (5) are connected with the sealing ring (6) through a screw (7);
the shaft coupling of the plunger pump (1) is in transmission connection with the output shaft of the motor through a belt, and the control valves comprise check valves (8) arranged on the output end communication pipelines (2) of the plunger pump (1) and safety valves (9) arranged on the output end communication pipelines (2) of the plunger pump (1);
the outer sides of the circumferences of the connecting ends of the first through pipe (4) and the second through pipe (5) are respectively provided with an inclined ring surface (10), the cross section shapes of the inclined ring surfaces (10) of the connecting ends of the first through pipe (4) and the second through pipe (5) are respectively of an isosceles trapezoid structure, the diameters of the first through pipe (4) and the second through pipe (5) are the same as the diameter of the outer side of the inclined ring surface (10), the diameter of the inner side of the inclined ring surface (10) is larger than the diameter of the outer side, and the ring sleeve of the sealing ring (6) is sleeved on the outer side surface of the inclined ring surface (10);
the surfaces of the inclined ring surfaces (10) of the first through pipe (4) and the second through pipe (5) are both provided with a plurality of through grooves (11) in an annular and equidistant manner, and a plurality of sliding blocks (12) are correspondingly arranged on the through grooves (11) on the outer side surface of the inclined ring surface (10) in a one-to-one fit manner, the screw rod (7) penetrates through the sliding block (12) and the through groove (11), a plurality of placing grooves (13) are annularly and equidistantly arranged on two sides of the inner side part of the sealing ring (6), the through grooves (11) are in one-to-one correspondence with the placing grooves (13), the through grooves (11) are correspondingly communicated with the placing grooves (13), the inner sides of the two opposite placing grooves (13) are respectively provided with a first sliding plate (14) and a second sliding plate (15), and the first sliding plate (14) and the second sliding plate (15) are symmetrically arranged by the central plane of the sealing ring (6), the outer ends of the first sliding plate (14) and the second sliding plate (15) are respectively in threaded connection with the two screws (7);
the inner side face of the sliding block (12) is correspondingly matched with the inclined ring face (10), the outer side face of the sliding block (12) is arranged to be a vertical plane, the screw rod (7) penetrates through the vertical plane of the sliding block (12), and the screw rod (7) is in sliding fit with the through groove (11) of the inclined ring face (10) through the sliding block (12).
2. The cryogenic closed injection device for liquid carbon dioxide according to claim 1, characterized in that:
the circumference medial surface that leads to groove (11) runs through sealing ring (6) medial surface, the side of first slide (14) and second slide (15) all is provided with spout (16), sealing ring (6) both sides face all runs through and is provided with kelly (17), kelly (17) one end is in spout (16) inboard, and kelly (17) other end is in and leads to groove (11) inboard, it is provided with spring (18) to lead to groove (11) inside, kelly (17) tip passes through spring (18) and leads to groove (11) inside wall fixed connection.
3. The liquid carbon dioxide cryogenic closed injection device of claim 2, characterized in that:
the sealing ring is characterized in that an inner tube (19) is arranged at the center of the sealing ring (6), a first sliding ring (20) and a second sliding ring (21) are respectively arranged at two ends of the inner tube (19), a first movable rod (22) and a second movable rod (23) are respectively and fixedly arranged on opposite side surfaces of the first sliding ring (20) and the second sliding ring (21), one end of the first movable rod (22) is fixedly connected with the inner side surface of the first sliding ring (20), the other end of the first movable rod (22) penetrates through the second sliding ring (21), one end of the second movable rod (23) is fixedly connected with the inner side surface of the second sliding ring (21), and the other end of the second movable rod (23) penetrates through the first sliding ring (20).
4. The cryogenic closed injection device for liquid carbon dioxide according to claim 3, characterized in that:
the sliding plate is characterized in that the end parts of the inner sides of the first sliding plate (14) and the second sliding plate (15) are fixedly connected with one end of a pull rope (24), the first sliding plate (14) is fixedly connected with a first sliding ring (20) through the pull rope (24), the second sliding plate (15) is fixedly connected with a second sliding ring (21) through the pull rope (24), and a plurality of movable grooves (25) which are correspondingly matched with the first movable rod (22) and the second movable rod (23) are formed in the side edge of the inner tube (19).
5. The liquid carbon dioxide cryogenic closed injection device of claim 4, characterized in that:
the inner pipe (19) both ends are inside to be pegged graft respectively and are had first joint (26) and second joint (27), first joint (26) and second joint (27) inside utilize opening (28) to communicate through inner pipe (19), the circumference lateral surface of first joint (26) and second joint (27) medial extremity all is provided with a plurality of sand grips (29), the circumference medial surface of inner pipe (19) is provided with strip groove (30) that correspond with sand grip (29), and first joint (26) and second joint (27) all utilize sand grip (29) and inner pipe (19) strip groove (30) sliding fit.
6. The liquid carbon dioxide cryogenic closed injection device of claim 5, characterized in that:
first siphunculus (4) inboard fixedly connected with first ring frame (31), second siphunculus (5) inboard fixedly connected with second ring frame (32), the circumference lateral surface that first joint (26) and second connect (27) outside end all is provided with first ring frame (31) and second ring frame (32) and corresponds annular (33) of matching.
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| CN202210432631.5A CN114542986B (en) | 2022-04-24 | 2022-04-24 | Liquid carbon dioxide low-temperature closed injection device |
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| CN202210432631.5A CN114542986B (en) | 2022-04-24 | 2022-04-24 | Liquid carbon dioxide low-temperature closed injection device |
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| KR101379674B1 (en) * | 2013-09-10 | 2014-04-01 | 한국지질자원연구원 | Leak processing appratus fir carbon dioxide and method thereof |
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| JP2010196825A (en) * | 2009-02-25 | 2010-09-09 | Chugoku Electric Power Co Inc:The | Low temperature liquefied gas delivery device and low temperature liquefied gas delivery method |
| CN106247169A (en) * | 2016-09-08 | 2016-12-21 | 神华宁夏煤业集团有限责任公司 | A kind of mining liquid carbon dioxide pipeline transporter and carrying method |
| CN106917613A (en) * | 2017-04-24 | 2017-07-04 | 新疆敦华石油技术股份有限公司 | Oilfield liquids carbon dioxide injection device and method for implanting |
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Effective date of registration: 20221207 Address after: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC SHENGLI OILFIELD Co. Address before: 257088 No. 125, Jinan Road, Dongying District, Dongying City, Shandong Province Patentee before: SINOPEC SHENGLI OILFIELD Co. |
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