A molecular sieve dryer for water-containing natural gas in oil fields

Abstract

The present invention discloses a molecular sieve dryer for oilfield water-containing natural gas, and relates to the technical field of natural gas dehydration. The present invention comprises a bracket, wherein two groups of top rings are arranged on the top of the bracket, a rotating rod is rotatably installed on the top of the bracket, the rotating rod is driven by a motor, and both sides of the rotating rod are rotatably installed with a flip sleeve, and a molecular sieve storage cylinder is fixedly installed inside the two groups of flip sleeves, and multiple groups of partitions are arranged on the top and bottom of the molecular sieve storage cylinder. The present invention makes the molecular sieve storage cylinder transpose, and then controls the flip sleeve to rotate, the flip sleeve drives the molecular sieve storage cylinder to flip, and the upper connecting sleeve rotates to the bottom, and the molecular sieve inside the molecular sieve storage cylinder can be discharged into the collection bucket through the partition and the grid groove, and at the same time controls the rotation of the stirring shaft, and the stirring shaft accelerates the discharge of the molecular sieve through the stirring blade. After the molecular sieve is discharged, the flip sleeve is controlled to flip again, and the molecular sieve can be added again, and the molecular sieve can be quickly replaced.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas dehydration, and in particular to a molecular sieve dryer used for water-containing natural gas in oil fields. Background Art

[0002] Water is the most common impurity component in all the treatment or processing steps of natural gas from extraction to consumption, and its content is almost saturated with gas phase water, and even carries a certain amount of liquid water. The presence of water in natural gas often causes serious consequences. At present, the commonly used water removal equipment for natural gas is molecular sieve gas dehydration device.

[0003] The patent (application number: CN201520342689.6) discloses a molecular sieve dryer for water-containing natural gas in oil fields, including a cylinder, the upper and lower parts of the cylinder are respectively connected to the heads, the top of the upper head is provided with a manhole, the bottom of the lower head is provided with a sewage outlet and a leg; a thermometer port is provided on the middle side wall of the cylinder, a detachable grid is provided inside the upper end of the cylinder, an upper filler is provided at the lower end of the detachable grid, an upper wire mesh is provided at the lower end of the upper filler, a molecular sieve is provided at the lower end of the upper wire mesh, a lower wire mesh is provided at the lower end of the molecular sieve, a lower filler is provided at the lower end of the lower wire mesh, a fixed grid is provided at the lower end of the lower filler, and a support is provided at the lower end of the fixed grid.

[0004] This patent and the prior art have the following technical problems in actual use:

[0005] 1. After a period of use, the molecular sieve absorbs water to saturation and needs to be regenerated before it can be used again. This patent cannot process natural gas while regenerating the molecular sieve, and the natural gas cannot be processed continuously. The existing device usually has two molecular sieve dehydration devices, and the two sets of equipment operate alternately. Although it can realize continuous processing of natural gas, it is difficult to control the two sets of equipment.

[0006] 2. When replacing the molecular sieve, both this patent and the prior art require manual opening of the tank to take out the molecular sieve and then inject a new molecular sieve. Since the amount of molecular sieve is large, the replacement time is long. At the same time, when in use, a large number of molecular sieves are piled up together, affecting the dehydration effect. During the regeneration process, high-temperature and high-concentration water vapor will be formed between the piled molecular sieves, which will seriously damage the molecular sieve structure and the regeneration effect is poor. Summary of the invention

[0007] The purpose of the present invention is to solve the above problems and provide a molecular sieve dryer for water-containing natural gas in oil fields.

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] A molecular sieve dryer for water-containing natural gas in oil fields, comprising a bracket, two groups of top rings are arranged on the top of the bracket, a replacement cavity is arranged between the two groups of top rings, a lower tank body is fixedly installed on the bottom of the lower top ring, an air inlet pipe is arranged on the bottom of the lower tank body, an air inlet valve is arranged on the air inlet end of the air inlet pipe, an upper tank body is fixedly installed on the top of the upper top ring, an exhaust pipe is arranged on the top of the upper tank body, and an exhaust valve is arranged on the exhaust end of the exhaust pipe;

[0010] The top of the bracket is rotatably installed with a rotating rod, and the rotating rod is driven by a motor. Both sides of the rotating rod are rotatably installed with a flip sleeve, and the flip sleeve can flip automatically. A molecular sieve storage cylinder is fixedly installed inside the two groups of flip sleeves. The top and bottom of the molecular sieve storage cylinder are provided with multiple groups of partitions, and a bottom net is provided between the lower partitions. The top and bottom of the molecular sieve storage cylinder are sleeved with a lifting sleeve, and the two groups of lifting sleeves can slide synchronously and reversely along the molecular sieve storage cylinder. A connecting sleeve is provided inside the lifting sleeve, and the connecting sleeve is sealingly sleeved on the molecular sieve storage cylinder. The connecting sleeve can be sealed and inserted into the lower tank body and the upper tank body. Multiple groups of grid grooves are provided at one end of the connecting sleeve away from the lifting sleeve, and a bottom net is also provided in the grid groove of the connecting sleeve below. The grid groove and the partition are arranged correspondingly, the width of the partition is greater than the width of the grid groove, and the spacing between adjacent grid grooves is greater than the width of the partition. A stirring shaft is rotatably installed inside the molecular sieve storage cylinder, and a stirring blade is provided on the outer side of the stirring shaft;

[0011] A collecting hopper is arranged on the left side of the bracket, and the connecting sleeve can be inserted into the collecting hopper in a sealing manner. A material valve is arranged at the bottom of the collecting hopper, and a recovery cylinder is arranged below the collecting hopper. A regeneration air pipe is arranged on the left side of the collecting hopper, and a regeneration air valve is arranged at the air inlet end of the regeneration air pipe.

[0012] Furthermore, a driving bevel gear is rotatably installed on the top of the rotating rod, and the driving bevel gear is driven by motor 2. A rotating shaft is arranged on the outside of the flip sleeve, and the rotating shaft is rotatably installed on the outside of the rotating rod. An elastic lever is arranged on the outside of the rotating shaft, and a driven bevel gear is rotatably installed on the outside of the rotating shaft. The driven bevel gears on the two sets of rotating shafts are respectively meshed with both sides of the driving bevel gear. A shift groove is annularly opened on the inner wall of the driven bevel gear, and the elastic shift rod is clamped in the shift groove.

[0013] Furthermore, a transmission screw is rotatably installed inside the flip sleeve, and the spiral directions of the two ends of the transmission screw are opposite. The transmission screw is located on the outside of the molecular sieve storage cylinder, and a driven wheel is fixedly installed on the outside of the transmission screw. A driving wheel is rotatably installed on the top of the flip sleeve, and the driving wheel is driven by motor three. The driving wheel is meshed with the driven wheel, and a lifting nut is provided on the outside of the lifting sleeve. The lifting nuts on the upper and lower sets of lifting sleeves are respectively threadedly connected to the two ends of the transmission screw.

[0014] Furthermore, anti-dropping blocks are provided at both ends of the transmission screw.

[0015] Furthermore, a stirring gear is fixedly installed on the outer side of the stirring shaft, and a gear rod is fixedly installed inside the connecting sleeve, and the gear rod is meshed with the stirring gear.

[0016] Furthermore, the stirring blades are linearly arranged in a plurality of groups, and the lengths of the stirring blades decrease from the middle to both sides.

[0017] Furthermore, a sealing groove is provided at one end of the lifting sleeve away from the center of the molecular sieve storage cylinder, and a sealing protrusion is provided at the top end of the lower tank body and the bottom end of the upper tank body, and the sealing protrusion can be inserted in the sealing groove.

[0018] Furthermore, the inner walls of the lower tank body and the upper tank body are both provided with sealing inner rings, and when the connecting sleeve is fully inserted into the lower tank body and the upper tank body, the connecting sleeve presses against the sealing inner rings.

[0019] Furthermore, the material valve adopts a rubber bottom nozzle, and a tying rope is arranged on the outer side of the rubber bottom nozzle.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention controls the lifting sleeve to slide, the lifting sleeve drives the connecting sleeve to move away from the upper tank body and the lower tank body, and then the rotating rod rotates, the rotating rod drives the two groups of molecular sieve storage cylinders to change positions, and after the replacement is completed, the connecting sleeve is inserted into the upper tank body and the lower tank body to complete the sealed connection between the molecular sieve storage cylinder and the upper tank body and the lower tank body, which can completely process natural gas continuously. At the same time, only one group of air inlet pipe and exhaust pipe needs to be controlled, and the control is convenient. The connecting sleeve is close to the partition, and the partition blocks the grid groove to achieve the sealing of the molecular sieve storage cylinder, ensuring that the molecular sieve will not be contaminated by the outside world after replacement.

[0022] 2. The present invention makes the molecular sieve storage cylinder change position, and then controls the rotation of the flip sleeve, the flip sleeve drives the molecular sieve storage cylinder to flip, the upper connecting sleeve rotates to the bottom, and then controls the connecting sleeve to move away from the partition, the molecular sieve inside the molecular sieve storage cylinder can be discharged into the collecting bucket through the partition and the grid groove, the collecting bucket guides the molecular sieve into the recovery cylinder, and at the same time controls the rotation of the stirring shaft, the stirring shaft accelerates the discharge of the molecular sieve through the stirring blades, after the molecular sieve is discharged, the flip sleeve is controlled to flip again, the molecular sieve can be added again, and the molecular sieve can be quickly replaced.

[0023] 3. The present invention can break up the molecular sieve by using a stirring shaft and a stirring blade in combination, thereby improving the dehydration effect of the molecular sieve and preventing the molecular sieve structure from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the support and the collection bucket of the present invention;

[0026] Figure 3 It is a cross-sectional schematic diagram of the lower tank body and the upper tank body of the present invention;

[0027] Figure 4 This is a schematic diagram of the transmission structure of the molecular sieve storage cylinder of the present invention;

[0028] Figure 5 It is a schematic diagram of the rotating rod and the turning sleeve of the present invention;

[0029] Figure 6 The present invention Figure 4 The enlarged schematic diagram of part A in the middle;

[0030] Figure 7 This is a schematic diagram of ventilation of the molecular sieve storage cylinder of the present invention;

[0031] Figure 8 It is a schematic diagram of the sealing of the molecular sieve storage cylinder of the present invention.

[0032] 1. Bracket; 11. Lower tank body; 12. Upper tank body; 13. Sealing protrusion; 14. Inlet pipe; 141. Inlet valve; 15. Exhaust pipe; 151. Exhaust valve; 16. Sealing inner ring; 2. Rotating rod; 21. Active bevel gear; 3. Flip sleeve; 31. Transmission screw; 32. Driven wheel; 33. Active wheel; 34. Rotating shaft; 35. Driven bevel gear; 36. Elastic lever; 37. Slide groove; 4. Molecular sieve storage cylinder; 41. Partition; 42. Bottom net; 43. Stirring shaft; 44. Stirring blade; 45. Stirring gear; 5. Lifting sleeve; 51. Lifting nut; 52. Connecting sleeve; 53. Grid groove; 54. Gear rod; 55. Sealing groove; 6. Collecting bucket; 61. Rubber bottom nozzle; 62. Regeneration air pipe; 63. Regeneration air valve; 7. Recovery cylinder. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] A molecular sieve dryer for oilfield water-containing natural gas according to a preferred embodiment of the present invention will be described in detail below.

[0035] Embodiment 1

[0036] like Figure 1-Figure 8As shown, a molecular sieve dryer for water-containing natural gas in oil fields comprises a bracket 1, two groups of top rings are arranged on the top of the bracket 1, a replacement cavity is arranged between the two groups of top rings, a lower tank body 11 is fixedly installed at the bottom of the lower top ring, an air inlet pipe 14 is arranged at the bottom of the lower tank body 11, an air inlet valve 141 is arranged at the air inlet end of the air inlet pipe 14, an upper tank body 12 is fixedly installed on the top of the upper top ring, an exhaust pipe 15 is arranged on the top of the upper tank body 12, and an exhaust valve 151 is arranged at the exhaust end of the exhaust pipe 15;

[0037] A rotating rod 2 is rotatably installed on the top of the bracket 1, and the rotating rod 2 is driven by a motor. A flip sleeve 3 is rotatably installed on both sides of the rotating rod 2. The flip sleeve 3 can flip automatically. A molecular sieve storage cylinder 4 is fixedly installed inside the two groups of flip sleeves 3. Multiple groups of partitions 41 are arranged on the top and bottom of the molecular sieve storage cylinder 4. A bottom net 42 is arranged between the lower partitions 41. A lifting sleeve 5 is sleeved on the top and bottom of the molecular sieve storage cylinder 4. The two groups of lifting sleeves 5 can slide synchronously in the opposite direction along the molecular sieve storage cylinder 4. A connecting sleeve 52 is arranged inside the lifting sleeve 5. The connecting sleeve 52 is sealed and connected to the molecular sieve storage cylinder 4. The connecting sleeve 52 can be sealed and inserted into the lower tank body 11 and the upper tank body 12. The end of the connecting sleeve 52 away from the lifting sleeve 5 is provided with multiple groups of grid grooves 53. The grid grooves 53 of the lower connecting sleeve 52 are also provided with a bottom net 42. The grid grooves 53 are provided corresponding to the partitions 41. The width of the partitions 41 is greater than the width of the grid grooves 53. The spacing between adjacent grid grooves 53 is greater than the width of the partitions 41. A stirring shaft 43 is rotatably installed inside the molecular sieve storage cylinder 4, and a stirring blade 44 is provided on the outer side of the stirring shaft 43.

[0038] A collecting hopper 6 is arranged on the left side of the bracket 1, and the connecting sleeve 52 can be inserted into the collecting hopper 6 in a sealing manner. A material valve is arranged at the bottom of the collecting hopper 6, and a recovery cylinder 7 is arranged below the collecting hopper 6. A regeneration air pipe 62 is arranged on the left side of the collecting hopper 6, and a regeneration air valve 63 is arranged at the air inlet end of the regeneration air pipe 62.

[0039] Natural gas enters the lower tank body 11 through the air inlet pipe 14, and enters the molecular sieve through the grid groove 53 and the bottom net 42 of the partition 41. After dehydration for a period of time, the stirring shaft 43 is controlled to rotate, and the stirring shaft 43 drives the stirring blade 44 to rotate. The stirring blade 44 stirs the molecular sieve to improve the utilization rate of the molecular sieve. After the equipment is used for 24 hours, the two sets of lifting sleeves 5 are controlled to slide toward the middle of the molecular sieve storage cylinder 4 at the same time. The lifting sleeve 5 drives the connecting sleeve 52 away from the upper tank body 12 and the lower tank body 11, and the connecting sleeve 52 is pressed on the partition 41. The partition 41 blocks the grid groove 53, so that the two ends of the molecular sieve storage cylinder 4 are sealed to prevent the molecular sieve from being contaminated by the outside world. Then, the motor 1 controls the rotating rod 2 to rotate, and the rotating rod 2 drives the two groups of flip sleeves 3 to rotate. The two groups of flip sleeves 3 drive the two groups of molecular sieve storage cylinders 4 to change positions, and the new molecular sieve storage cylinder 4 enters the replacement cavity. Then, the two groups of lifting sleeves 5 on the molecular sieve storage cylinder 4 are controlled to slide toward the outside of the molecular sieve storage cylinder 4 at the same time. The two groups of lifting sleeves 5 drive the two groups of connecting sleeves 52 to be inserted into the lower tank body 11 and the upper tank body 12 respectively, and the molecular sieve storage is completed. The cylinder 4 is sealed and installed. At this time, the natural gas dehydration process can continue. Then, the lifting sleeves 5 at both ends of the used molecular sieve storage cylinder 4 are controlled to extend, and the connecting sleeve 52 at the bottom is inserted into the collecting bucket 6. At the same time, the material valve is closed, and the regeneration gas enters the collecting bucket 6 through the regeneration gas pipe 62. The regeneration gas regenerates the molecular sieve. Since the bottom net 42 is set in the lower grid groove 53 and the partition 41, the molecular sieve is stably stored in the molecular sieve storage cylinder 4, and the upper grid groove 53 and the partition 41 are far away from each other, so that the top of the molecular sieve storage cylinder 4 is ventilated. While regenerating, the stirring shaft 43 is controlled to rotate, and the stirring shaft 43 drives the stirring blade 44 to rotate. The stirring blade 44 stirs the molecular sieve to prevent the formation of high-temperature and high-concentration water vapor between the molecular sieves and prevent the water vapor from destroying the molecular sieve structure. The water vapor is quickly discharged from the top of the molecular sieve storage cylinder 4, and the regeneration stability is high. After the regeneration is completed, the lifting sleeves 5 at both ends of the molecular sieve storage cylinder 4 are controlled again to be close to the middle, so that the molecular sieve storage cylinder 4 is sealed to prevent the regenerated molecular sieve from being contaminated twice, and when replaced, it can be directly transferred to the replacement cavity;

[0040] When the molecular sieve needs to be replaced, the flip sleeve 3 is controlled to flip, and the flip sleeve 3 drives the molecular sieve storage cylinder 4 to flip, and the bottom net 42 rotates to the top. At this time, the bottom connecting sleeve 52 is inserted into the collecting bucket 6, and the material valve is opened. The molecular sieve enters the collecting bucket 6 through the spacing of the partition 41 and the grid groove 53, and enters the recovery cylinder 7 through the material valve to complete the discharge of the failed molecular sieve. At the same time, the stirring shaft 43 is controlled to rotate, and the stirring shaft 43 drives the stirring blade 44 to rotate. The stirring blade 44 stirs the molecular sieve to accelerate the discharge speed of the molecular sieve. After the molecular sieve is completely discharged, the flip sleeve 3 is controlled to flip again, and then a new molecular sieve is added from the top of the molecular sieve storage cylinder 4. The molecular sieve replacement efficiency is high. At the same time, the molecular sieve replacement and regeneration use the same structure, which is compact.

[0041] Embodiment 2

[0042] like Figure 4-Figure 6 As shown, a driving bevel gear 21 is rotatably installed on the top of the rotating rod 2, and the driving bevel gear 21 is driven by a second motor. A rotating shaft 34 is provided on the outside of the flip sleeve 3, and the rotating shaft 34 is rotatably installed on the outside of the rotating rod 2. An elastic lever 36 is provided on the outside of the rotating shaft 34, and a driven bevel gear 35 is rotatably installed on the outside of the rotating shaft 34. The driven bevel gears 35 on the two groups of rotating shafts 34 are respectively meshed with the two sides of the driving bevel gear 21, and a shifting groove 37 is annularly opened on the inner wall of the driven bevel gear 35, and the elastic lever 36 is clamped in the shifting groove 37.

[0043] When it is necessary to control the rotation of the flip sleeve 3, the active bevel gear 21 is driven by the motor 2 to rotate, and the active bevel gear 21 drives the driven bevel gear 35 to rotate. Since the molecular sieve storage cylinder 4 in use cannot rotate under the limiting action of the upper tank body 12 and the lower tank body 11, the used molecular sieve storage cylinder 4 limits the corresponding flip sleeve 3 to rotate, and the flip sleeve 3 limits the rotation of the rotating shaft 34. At this time, the driven bevel gear 35 at this position rotates relative to the rotating shaft 34, and the elastic lever 36 bends away from the shifting groove 37. The molecular sieve inside the used molecular sieve storage cylinder 4 needs to be replaced and needs to be flipped. Since the molecular sieve storage cylinder 4 is not restricted, the driven bevel gear 35 at this position drives the rotating shaft 34 to rotate through the elastic lever 36 and the shifting groove 37, and the rotating shaft 34 drives the flip sleeve 3 to rotate, and the flip sleeve 3 drives the molecular sieve storage cylinder 4 to flip. Therefore, only one set of drives is needed to flip any group of molecular sieve storage cylinders 4, and the molecular sieve storage cylinder 4 only needs to be away from the upper tank body 12 and the lower tank body 11, and the structure is compact.

[0044] Embodiment 3

[0045] like Figure 4-Figure 7 As shown, a transmission screw 31 is rotatably installed inside the flip sleeve 3, and the spiral directions of the two ends of the transmission screw 31 are opposite. The transmission screw 31 is located on the outside of the molecular sieve storage cylinder 4, and a driven wheel 32 is fixedly installed on the outside of the transmission screw 31. A driving wheel 33 is rotatably installed on the top of the flip sleeve 3. The driving wheel 33 is driven by motor 3, and the driving wheel 33 is meshed with the driven wheel 32. A lifting nut 51 is provided on the outside of the lifting sleeve 5, and the lifting nuts 51 on the upper and lower groups of lifting sleeves 5 are respectively threadedly connected to the two ends of the transmission screw 31.

[0046] By controlling the power supply of motor 3, motor 3 drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 32 to rotate, the driven wheel 32 drives the transmission screw 31 to rotate, and the transmission screw 31 drives the two sets of lifting sleeves 5 to slide synchronously and oppositely along the molecular sieve storage cylinder 4 through the lifting nut 51.

[0047] Furthermore, anti-dropping blocks are provided at both ends of the transmission screw 31 to prevent the lifting nut 51 from falling off the transmission screw 31 .

[0048] Embodiment 4

[0049] like Figure 7 As shown, a stirring gear 45 is fixedly installed on the outer side of the stirring shaft 43 , and a gear rod 54 is fixedly installed inside the connecting sleeve 52 , and the gear rod 54 is meshed with the stirring gear 45 .

[0050] By controlling the motor to be energized, the motor drives the driving wheel 33 to rotate, the driving wheel 33 drives the driven wheel 32 to rotate, the driven wheel 32 drives the transmission screw 31 to rotate, the transmission screw 31 drives the lifting sleeve 5 to slide through the lifting nut 51, the lifting sleeve 5 drives the connecting sleeve 52 to slide, the connecting sleeve 52 drives the gear rod 54 to move, the gear rod 54 drives the stirring gear 45 to rotate, the stirring gear 45 drives the stirring shaft 43 to rotate, the stirring shaft 43 drives the stirring blade 44 to rotate, and there is no need to set up an additional stirring shaft 43 drive, the structure is compact, and during dehydration and regeneration, the lifting sleeve 5 is controlled to slide back and forth, the lifting sleeve 5 drives the connecting sleeve 52 to move back and forth, the connecting sleeve 52 stirs the gas through the grid groove 53 and the bottom net 42, so that the gas enters the molecular sieve more evenly, and at the same time the connecting sleeve 52 drives the stirring shaft 43 to rotate forward and reversely through the gear rod 54 and the stirring gear 45, which can also achieve molecular sieve stirring, and the dehydration and regeneration effect is better.

[0051] Furthermore, the stirring blades 44 are linearly arranged in a plurality of groups, and the length of the stirring blades 44 decreases from the middle to both sides, so that the stirring is fully and evenly performed.

[0052] Embodiment 5

[0053] like Figure 3-Figure 8 As shown, a sealing groove 55 is provided at one end of the lifting sleeve 5 away from the center of the molecular sieve storage cylinder 4 , and a sealing protrusion 13 is provided at the top end of the lower tank body 11 and the bottom end of the upper tank body 12 , and the sealing protrusion 13 can be inserted into the sealing groove 55 .

[0054] When the connecting sleeve 52 is inserted into the lower tank body 11 and the upper tank body 12 , the sealing protrusion 13 is inserted into the sealing groove 55 , so that the sealing effect is better.

[0055] Furthermore, inner walls of the lower tank body 11 and the upper tank body 12 are both provided with sealing inner rings 16 , and when the connecting sleeve 52 is fully inserted into the lower tank body 11 and the upper tank body 12 , the connecting sleeve 52 presses against the sealing inner ring 16 .

[0056] When the connecting sleeve 52 is inserted into the lower tank body 11 and the upper tank body 12, the sealing protrusion 13 is inserted into the sealing groove 55, and the connecting sleeve 52 is pressed against the sealing inner ring 16, thereby improving the internal and external sealing.

[0057] Embodiment 6

[0058] like Figure 2As shown, the material valve adopts a rubber bottom nozzle 61, and a tying rope is arranged on the outside of the rubber bottom nozzle 61. Through this design, when the rubber bottom nozzle 61 is opened to discharge the material, the rubber bottom nozzle 61 provides a buffering force to the molecular sieve, and the discharge effect is better.

[0059] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A molecular sieve dryer for oilfield water-containing natural gas, comprising a support (1), characterized in that: Two groups of top rings are arranged on the top of the bracket (1), a replacement cavity is arranged between the two groups of top rings, a lower tank body (11) is fixedly mounted on the bottom of the lower top ring, an air intake pipe (14) is arranged on the bottom of the lower tank body (11), an air intake valve (141) is arranged at the air intake end of the air intake pipe (14), an upper tank body (12) is fixedly mounted on the top of the upper top ring, an exhaust pipe (15) is arranged on the top of the upper tank body (12), and an exhaust valve (151) is arranged at the exhaust end of the exhaust pipe (15); A rotating rod (2) is rotatably mounted on the top of the support (1). The rotating rod (2) is located on one side of the opening of the replacement cavity. The rotating rod (2) is driven by a motor. Turnover sleeves (3) are rotatably mounted on both sides of the rotating rod (2). The turnover sleeves (3) can turn over automatically. Molecular sieve storage cylinders (4) are fixedly mounted inside the two sets of turnover sleeves (3). Multiple groups of partitions (41) are arranged on the top and bottom of the molecular sieve storage cylinder (4). A bottom net (42) is arranged between the lower partitions (41). The molecular sieve The top and bottom of the storage cylinder (4) are both sleeved with a lifting sleeve (5), and the two sets of lifting sleeves (5) can slide synchronously in opposite directions along the molecular sieve storage cylinder (4). A connecting sleeve (52) is arranged inside the lifting sleeve (5), and the connecting sleeve (52) is sealingly sleeved on the molecular sieve storage cylinder (4). The connecting sleeve (52) can be sealingly inserted into the lower tank body (11) and the upper tank body (12). The connecting sleeve (52) is provided with a plurality of grid grooves (53) at one end away from the lifting sleeve (5), and the grid grooves (53) of the connecting sleeve (52) at the bottom are A bottom net (42) is also provided in the cylinder, the grid groove (53) is provided corresponding to the partition (41), the width of the partition (41) is greater than the width of the grid groove (53), the spacing between adjacent grid grooves (53) is greater than the spacing between adjacent partitions (41), a stirring shaft (43) is rotatably installed inside the molecular sieve storage cylinder (4), a stirring blade (44) is provided outside the stirring shaft (43), a driving bevel gear (21) is rotatably installed on the top of the rotating rod (2), the driving bevel gear (21) is driven by a second motor, and the A rotating shaft (34) is arranged on the outside of the flip sleeve (3), the rotating shaft (34) is rotatably mounted on the outside of the rotating rod (2), an elastic lever (36) is arranged on the outside of the rotating shaft (34), a driven bevel gear (35) is rotatably mounted on the outside of the rotating shaft (34), the driven bevel gears (35) on the two sets of rotating shafts (34) are respectively meshed with the two sides of the driving bevel gear (21), the inner wall of the driven bevel gear (35) is provided with a lever groove (37) in the form of an annular ring, and the elastic lever (36) is clamped in the lever groove (37); A collecting hopper (6) is arranged on the left side of the bracket (1), the connecting sleeve (52) can be inserted into the collecting hopper (6) in a sealing manner, a material valve is arranged at the bottom of the collecting hopper (6), a recovery cylinder (7) is arranged below the collecting hopper (6), a regeneration air pipe (62) is arranged on the left side of the collecting hopper (6), and a regeneration air valve (63) is arranged at the air inlet end of the regeneration air pipe (62).

2. A molecular sieve dryer for oilfield water-containing natural gas according to claim 1, characterized in that: A transmission screw (31) is rotatably mounted inside the flip sleeve (3), and the two ends of the transmission screw (31) have opposite spiral directions. The transmission screw (31) is located outside the molecular sieve storage cylinder (4), and a driven wheel (32) is fixedly mounted outside the transmission screw (31). A driving wheel (33) is rotatably mounted on the top of the flip sleeve (3), and the driving wheel (33) is driven by a motor 3. The driving wheel (33) meshes with the driven wheel (32). A lifting nut (51) is arranged on the outside of the lifting sleeve (5), and the lifting nuts (51) on the upper and lower lifting sleeves (5) are respectively threadedly connected to the two ends of the transmission screw (31).

3. A molecular sieve dryer for oilfield water-containing natural gas according to claim 2, characterized in that: Anti-drop blocks are provided at both ends of the transmission screw (31).

4. The molecular sieve dryer for oilfield water-containing natural gas according to claim 1, characterized in that: A stirring gear (45) is fixedly mounted on the outside of the stirring shaft (43), and a gear rod (54) is fixedly mounted on the inside of the connecting sleeve (52), and the gear rod (54) is meshed with the stirring gear (45).

5. The molecular sieve dryer for oilfield water-containing natural gas according to claim 4, characterized in that: The stirring blades (44) are arranged in a linear array in a plurality of groups, and the length of the stirring blades (44) decreases from the middle to both sides.

6. The molecular sieve dryer for oilfield water-containing natural gas according to claim 1, characterized in that: A sealing groove (55) is provided at one end of the lifting sleeve (5) away from the center of the molecular sieve storage cylinder (4), and a sealing protrusion (13) is provided at the top end of the lower tank body (11) and the bottom end of the upper tank body (12), and the sealing protrusion (13) can be inserted into the sealing groove (55).

7. A molecular sieve dryer for oilfield water-containing natural gas according to claim 6, characterized in that: The inner walls of the lower tank body (11) and the upper tank body (12) are both provided with sealing inner rings (16); when the connecting sleeve (52) is fully inserted into the lower tank body (11) and the upper tank body (12), the connecting sleeve (52) presses against the sealing inner ring (16).

8. A molecular sieve dryer for oilfield water-containing natural gas according to any one of claims 1 to 7, characterized in that: The material valve adopts a rubber bottom nozzle (61), and a tying rope is arranged on the outer side of the rubber bottom nozzle (61).

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