Oil gas defrosting system and method for oil gas recovery

Abstract

The invention belongs to the technical field of oil and gas recovery, and particularly relates to an oil and gas defrosting system and method for oil and gas recovery. The system comprises an oil pipe assembly, a heat exchange assembly is arranged on the outer side of the oil pipe assembly, a gas-liquid separation assembly is arranged at the end of the oil pipe assembly, and a first defrosting pipe and a second defrosting pipe are arranged on the outer side of the gas-liquid separation assembly; the first defrosting pipe and the second defrosting pipe are used for defrosting the outer side of the gas-liquid separation assembly, the first defrosting pipe and the second defrosting pipe are both connected with the flow dividing control assembly arranged at the end of the heat exchange assembly, oil gas is fed into the oil pipe assembly, and a condensing medium in the heat exchange assembly is used for cooling the oil gas. Oil gas is liquefied into oil liquid after being cooled and enters the gas-liquid separation assembly, the temperature of a condensing medium is increased after heat exchange, the condensing medium with the increased temperature flows into the first defrosting pipe and the second defrosting pipe through the flow dividing control assembly, and the flow dividing control assembly can control the condensing medium to flow into the first defrosting pipe or the second defrosting pipe or control the first defrosting pipe and the second defrosting pipe to circulate. The defrosting work can be controlled according to the frosting position, and the defrosting flexibility is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil and gas recovery, and in particular relates to an oil and gas defrosting system and method for oil and gas recovery. Background Art

[0002] Existing oil and gas defrosting systems and devices for oil and gas recovery have a relatively single defrosting position, are not easy to change, cannot control defrosting according to the frost location, lack defrosting flexibility, and easily cause energy waste;

[0003] For example, the defrost device for oil and gas recovery with patent application number CN202323509381.X has a condenser box, which is provided with an inlet and an outlet, a condensation pipe inside the condenser box, a plurality of fin plates inside the condenser box, and a liquid outlet at the bottom of the condenser box; a drain pipe is provided on the liquid outlet, a plurality of liquid guide plates are provided in the inner cavity of the condenser box, each liquid guide plate and the inner wall of the condenser box and the bottom surface of the condenser box form a defrost area, an auxiliary heating pipe is provided in the defrost area, a first water tank and a second water tank are provided on the inner wall of the condenser box, the first water tank is provided with a first liquid inlet, and the second water tank is provided with a second liquid inlet. A second liquid inlet is provided on the top, a first driving pump is provided in the first water tank, a second driving pump is provided in the second water tank, the output end of the first driving pump is connected to the inlet of the condensation pipe, the outlet of the condensation pipe is connected to the second liquid inlet, the output end of the second driving pump is connected to the inlet of the auxiliary heating pipe, and the outlet of the auxiliary heating pipe is connected to the first liquid inlet. However, the disadvantage of this technical solution is that there is only one set of auxiliary heating pipes, and the position of the auxiliary heating pipes is fixed. The defrosting position through the auxiliary heating pipes is fixed, and defrosting cannot be performed on more positions. It does not have the flexibility of defrosting and is prone to energy waste. Summary of the Invention

[0004] The object of the present invention is to provide an oil and gas defrosting system and method for oil and gas recovery to solve the problems in the prior art. The specific technical solutions are as follows:

[0005] An oil and gas defrost system and method for oil and gas recovery include an oil pipe assembly, a heat exchange assembly is provided on the outside of the oil pipe assembly, a gas-liquid separation assembly is provided at the end of the oil pipe assembly, defrost pipe 1 and defrost pipe 2 are provided on the outside of the gas-liquid separation assembly, defrost pipe 1 and defrost pipe 2 defrost the outside of the gas-liquid separation assembly, and both defrost pipe 1 and defrost pipe 2 are connected to a diversion control assembly provided at the end of the heat exchange assembly.

[0006] Furthermore, the oil pipe assembly has a first oil and gas pipe, one end of the first oil and gas pipe is fixedly connected to the end of the air inlet pipe, the other end of the first oil and gas pipe is fixedly connected to one end of the second oil and gas pipe through elbow pipe one, the other end of the second oil and gas pipe is fixedly connected to one end of the third oil and gas pipe through elbow pipe two, the other end of the third oil and gas pipe is fixedly connected to the outlet pipe, and the lower end of the outlet pipe is connected to the gas-liquid separation assembly.

[0007] Furthermore, the heat exchange assembly includes a first sleeve, a second sleeve and a third sleeve. The first sleeve is sleeved on the outside of the first oil and gas pipe, the second sleeve is sleeved on the outside of the second oil and gas pipe, and the third sleeve is sleeved on the outside of the third oil and gas pipe. Spiral guide plates are provided in the first sleeve, the second sleeve and the third sleeve.

[0008] Furthermore, the first, second and third sleeves are connected in series end to end, the end of the first sleeve is connected to the medium storage box 1 through the condenser pipe 1, and the end of the third sleeve is connected to the driving pump 2 through the condenser pipe 2.

[0009] Furthermore, the medium storage box 1 is connected to the diversion control component via the drive pump 1, the drive pump 2 is connected to the medium storage box 2, and the medium storage box 2 is connected to the diversion control component.

[0010] Furthermore, the gas-liquid separation component includes a gas-liquid separation box, the lower end of the air outlet pipe is connected to the gas-liquid separation box, a defrost pipe is wound around the outside of the gas-liquid separation box, a vertical downward partition is provided in the gas-liquid separation box, a plurality of downward inclined guide plates are provided on the inner wall of the gas-liquid separation box and the side wall of the partition, a liquid level detector is provided in the gas-liquid separation box, the bottom of the detection end of the liquid level detector is level with the partition, a water collecting tank is provided at the lower end of the gas-liquid separation box, and the water collecting tank is connected to the water outlet pipe.

[0011] Furthermore, the lower end of the gas-liquid separation box is connected to an oil outlet pipe, and the second defrost pipe is wound around the outside of the oil outlet pipe. A ball valve is provided in the oil outlet pipe, and the ball valve is connected to the output end of the motor. The motor is fixed on the outside of the oil outlet pipe. The upper end of the gas-liquid separation box is fixed to one end of the return pipe, and the other end of the return pipe is fixed to the air inlet pipe. A second guide plate is provided in the air inlet pipe.

[0012] Furthermore, the diversion control assembly includes two connecting pipes, one end of the two connecting pipes is respectively connected to the driving pump 1 and the medium storage box 2, and the other ends of the two connecting pipes are respectively fixedly connected to the two shells, and the two connecting pipes are rotatably connected with plug-in pipes, and the two plug-in pipes are respectively fixedly connected to the two turntables, and the two turntables are respectively rotatably connected in the two shells, and a gear is provided at the fixed connection of the two turntables, and the gear is engaged with the rack for transmission, and the rack is connected to the output end of the hydraulic cylinder.

[0013] Furthermore, the turntable is provided with channel one, channel two and a spare channel, and spring blocking valves are slidably connected at the ends of channel one, channel two and the spare channel. Three through holes four are provided on the shell, and the ends of the three spring blocking valves are respectively clamped in the three through holes four. Three connectors are fixed on the outside of the shell, and the two ends of the defrost pipe one are respectively plugged and fixed with the two connectors corresponding to the two channels one, and the two ends of the defrost pipe two are respectively plugged and fixed with the two connectors corresponding to the two channels two, and the outer sides of the connectors corresponding to the spare channels are threadedly connected with sealing covers;

[0014] The spring blocking valve includes a sliding column, the upper end of the sliding column slides in channel one, the lower end of the sliding column is clamped in through hole four, the sliding column is provided with chamber one, and chamber two is provided between the turntable and the sliding column. Channel one is connected with chamber two through through hole one provided on the sliding column, chamber two is connected with chamber one through through hole two provided on the sliding column, and the chamber is connected with the connecting head through through holes three and four. A spring two is provided between the sliding column and the turntable, a sealing gasket two is provided on the sliding column, and through hole three is provided at the lower end of the sliding column.

[0015] An oil and gas defrosting method for oil and gas recovery, applied to any of the above-mentioned oil and gas defrosting systems for oil and gas recovery, comprises the following steps:

[0016] S1. Oil and gas are sent into the oil pipe assembly, and the condensing medium in the heat exchange assembly cools the oil and gas;

[0017] S2. After cooling, the oil and gas are liquefied into oil liquid and enter the gas-liquid separation component. The unliquefied oil and gas return to the oil pipe component through the return pipe to cool and liquefy again;

[0018] S3. After heat exchange, the condensing medium flows into defrost pipe 1 and defrost pipe 2 respectively through the diversion control component. Defrost pipe 1 and defrost pipe 2 defrost the outside of the gas-liquid separation component.

[0019] The advantages of the present invention are:

[0020] The oil and gas are sent into the oil pipe assembly, and the condensing medium in the heat exchange assembly cools down the oil and gas. After cooling down, the oil and gas are liquefied into oil and enter the gas-liquid separation assembly. The temperature of the condensing medium increases after heat exchange, and the condensing medium with increased temperature flows into the defrost pipe 1 and the defrost pipe 2 through the shunt control assembly. The defrost pipe 1 and the defrost pipe 2 defrost the outside of the gas-liquid separation assembly. The shunt control assembly can control the condensing medium with increased temperature to flow into the defrost pipe 1 or the defrost pipe 2 or both. The defrost can be controlled according to the frost position, which increases the flexibility of defrosting and avoids energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0024] Figure 4 Schematic diagram of the diversion control component structure of the present invention Figure 1 ;

[0025] Figure 5 Schematic diagram of the diversion control component structure of the present invention Figure 2 ;

[0026] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0027] Figure 7 for Figure 5 A partial enlarged view of point C in the middle;

[0028] Figure 8 Schematic diagram of the diversion control component structure of the present invention Figure 3 ;

[0029] Figure 9 for Figure 8 A partial enlarged view of point D in the middle;

[0030] Description of the marks in the figure:

[0031] First oil and gas pipe 1; first casing 2; spiral guide plate 3; elbow pipe 1 4; air inlet pipe 5; second oil and gas pipe 6; second casing 7; elbow pipe 2 8; third oil and gas pipe 9; third casing 10; outlet pipe 11; gas-liquid separation box 12; partition 13; guide plate 1 14; liquid level detector 15; return pipe 16; water collecting tank 17; water outlet pipe 18; oil outlet pipe 19; ball valve 20; motor 21; check valve 22; guide plate 2 23; condenser pipe 1 24; medium storage box 1 25; drive pump 1 26; diversion control assembly 27; defrost pipe 1 2 8; medium storage box 29; drive pump 2 30; condenser 2 31; defrost pipe 2 32; connecting pipe 33; housing 34; sealing gasket 1 35; plug-in pipe 36; gasket 1 37; gasket 2 38; spring 1 39; turntable 40; channel 1 41; channel 2 42; spare channel 43; connector 44; sealing cover 45; sliding column 46; through hole 1 47; through hole 2 48; chamber 1 49; through hole 3 50; through hole 4 51; gear 52; rack 53; hydraulic cylinder 54; sealing gasket 2 55; spring 2 56; chamber 2 57. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Example 1

[0035] like Figures 1-9 As shown, an oil and gas defrost system for oil and gas recovery includes an oil pipe assembly, a heat exchange assembly is provided on the outside of the oil pipe assembly, a gas-liquid separation assembly is provided at the end of the oil pipe assembly, a defrost pipe 1 28 and a defrost pipe 2 32 are provided on the outside of the gas-liquid separation assembly, and the defrost pipe 1 28 and the defrost pipe 2 32 defrost the outside of the gas-liquid separation assembly. The defrost pipe 1 28 and the defrost pipe 2 32 are both connected to a diversion control assembly 27 provided at the end of the heat exchange assembly.

[0036] The working principle of the above technical solution is: oil and gas are sent into the oil pipe assembly, and the condensing medium in the heat exchange assembly cools the oil and gas. After cooling and cooling, the oil and gas are liquefied into oil and enter the gas-liquid separation assembly. The temperature of the condensing medium increases after heat exchange, and the condensing medium with increased temperature flows into the defrost pipe 1 28 and the defrost pipe 2 32 respectively through the diversion control assembly 27. The defrost pipe 1 28 and the defrost pipe 2 32 defrost the outside of the gas-liquid separation assembly. The diversion control assembly 27 can control the condensing medium with increased temperature to flow into the defrost pipe 1 28 or the defrost pipe 2 32 or both. The defrost can be controlled according to the frost position, which increases the flexibility of defrosting and avoids energy waste.

[0037] Example 2

[0038] like Figures 1-9 As shown, the oil pipe assembly has a first oil and gas pipe 1, one end of which is fixedly connected to the end of the air inlet pipe 5, the other end of which is fixedly connected to one end of the second oil and gas pipe 6 via an elbow pipe 1 4, the other end of which is fixedly connected to one end of the third oil and gas pipe 9 via an elbow pipe 2 8, the other end of which is fixedly connected to the outlet pipe 11, and the lower end of the outlet pipe 11 is connected to the gas-liquid separation assembly;

[0039] The working principle of the above technical solution is as follows: the first oil and gas pipe 1 and the air inlet pipe 5, the first oil and gas pipe 1 and the elbow pipe 1 4, the elbow pipe 1 4 and the second oil and gas pipe 6, the second oil and gas pipe 6 and the elbow pipe 2 8, the elbow pipe 2 8 and the third oil and gas pipe 9, and the third oil and gas pipe 9 and the air outlet pipe 11 are all fixedly connected by bolts, which facilitates assembly and disassembly for cleaning;

[0040] Multiple second oil and gas pipes 6 can be installed between the first oil and gas pipe 1 and the third oil and gas pipe 9. One end of two adjacent second oil and gas pipes 6 is fixedly connected by an elbow pipe 1 4, and the other end of two adjacent second oil and gas pipes 6 is fixedly connected by an elbow pipe 2 8. This can increase the oil and gas flow distance and the oil and gas heat exchange time. The number of second oil and gas pipes 6 installed can be selected according to actual needs.

[0041] The first oil and gas pipe 1 , the second oil and gas pipe 6 and the third oil and gas pipe 9 have the same structure and can be assembled at will, which reduces the difficulty of installation.

[0042] Example 3

[0043] like Figures 1-9 As shown, the heat exchange assembly includes a first sleeve 2, a second sleeve 7 and a third sleeve 10. The first sleeve 2 is sleeved on the outside of the first oil and gas pipe 1, the second sleeve 7 is sleeved on the outside of the second oil and gas pipe 6, and the third sleeve 10 is sleeved on the outside of the third oil and gas pipe 9. The first sleeve 2, the second sleeve 7 and the third sleeve 10 are all provided with spiral guide plates 3.

[0044] The first sleeve 2, the second sleeve 7 and the third sleeve 10 are connected in series end to end. The end of the first sleeve 2 is connected to the medium storage box 1 25 through the condenser pipe 1 24, and the end of the third sleeve 10 is connected to the drive pump 2 30 through the condenser pipe 2 31.

[0045] The medium storage tank 1 25 is connected to the diversion control assembly 27 via the driving pump 1 26 , the driving pump 2 30 is connected to the medium storage tank 2 29 , and the medium storage tank 2 29 is connected to the diversion control assembly 27 ;

[0046] The working principle of the above technical solution is as follows: the oil and gas of the condenser pipe 2 31 are sent into the air inlet pipe 5, then enter the first oil and gas pipe 1, enter the second oil and gas pipe 6 through the elbow pipe 1 4, enter the third oil and gas pipe 9 through the elbow pipe 2 8, and then enter the gas-liquid separation box 12 through the outlet pipe 11. The driving pump 2 30 is started, and the condensed medium in the medium storage box 2 29 enters the third sleeve 10 through the condenser pipe 2 31. After the third sleeve 10 is filled with the condensed medium, the condensed medium enters the second sleeve 7. The second sleeve After the condensate is filled in 7, the condensate enters the first sleeve 2. After heat exchange with the oil and gas, the condensate enters the medium storage box 1 25 through the condenser pipe 1 24. The drive pump 1 26 is started. The hot condensate in the medium storage box 1 25 enters the defrost pipe 1 28 through the diversion control component 27. The defrost pipe 1 28 is wound around the outside of the gas-liquid separation component. The hot condensate defrosts the outside of the gas-liquid separation component. After defrosting, the hot condensate cools down and flows back into the medium storage box 2 29.

[0047] When the number of the second oil and gas pipes 6 increases, the number of the second casings 7 can also be increased accordingly. Two adjacent second casings 7 can be connected end to end in series. The first casing 2, the second casing 7 and the third casing 10 have the same structure and can be matched and assembled at will, reducing the difficulty of installation.

[0048] The spiral guide plate 3 can increase the heat exchange area with the first oil and gas pipe 1, the second oil and gas pipe 6 and the third oil and gas pipe 9 during the flow of the condensing medium in the first casing 2, the second casing 7 and the third casing 10, thereby improving the heat exchange rate.

[0049] Example 4

[0050] like Figures 1-9 As shown, the gas-liquid separation assembly includes a gas-liquid separation box 12, the lower end of the gas outlet pipe 11 is connected to the gas-liquid separation box 12, a defrost pipe 28 is wound around the outside of the gas-liquid separation box 12, a vertical downward partition 13 is provided in the gas-liquid separation box 12, a plurality of downwardly inclined guide plates 14 are provided on the inner wall of the gas-liquid separation box 12 and the side walls of the partition 13, a liquid level detector 15 is provided in the gas-liquid separation box 12, the bottom of the detection end of the liquid level detector 15 is flush with the partition 13, a water collecting tank 17 is provided at the lower end of the gas-liquid separation box 12, and the water collecting tank 17 is connected to the water outlet pipe 18;

[0051] The lower end of the gas-liquid separation box 12 is connected to an oil outlet pipe 19, a second defrost pipe 32 is wound around the outside of the oil outlet pipe 19, a ball valve 20 is provided in the oil outlet pipe 19, the ball valve 20 is connected to the output end of the motor 21, and the motor 21 is fixed to the outside of the oil outlet pipe 19. The upper end of the gas-liquid separation box 12 is fixed to one end of the return pipe 16, and the other end of the return pipe 16 is fixed to the intake pipe 5. A second guide plate 23 is provided in the intake pipe 5.

[0052] The working principle of the above technical solution is as follows: after cooling, the oil and gas are liquefied into oil liquid and enter the gas-liquid separation box 12. Then, the oil liquid sinks to the bottom of the gas-liquid separation box 12 through multiple guide plates 14. The unliquefied oil and gas bypass the partition 13 and return to the intake pipe 5 through the return pipe 16 to cool down and liquefy again.

[0053] The partition 13 increases the movement distance of the oil and gas in the gas-liquid separation box 12 to prevent the oil particles from entering the gas-liquid separation box 12 from the outlet pipe 11 and being carried into the return pipe 16 by the oil and gas;

[0054] When the liquid level detector 15 detects that the oil in the gas-liquid separation box 12 reaches a preset height, the control motor 21 is started, driving the ball valve 20 to rotate, and the oil is released into a preset container through the oil outlet pipe 19, so as to avoid excessive oil in the gas-liquid separation box 12 affecting the recovery of unliquefied oil and gas;

[0055] After the defrost pipe 28 defrosts the outside of the gas-liquid separation box 12, the defrosted water falls into the water collecting tank 17 and is then discharged from the water outlet pipe 18 to prevent the defrosted water from flowing freely.

[0056] Example 5

[0057] like Figures 1-9 As shown, the diversion control assembly 27 includes two connecting pipes 33, one end of the two connecting pipes 33 is connected to the driving pump 1 26 and the medium storage tank 2 29 respectively, and the other end of the two connecting pipes 33 is fixedly connected to the two housings 34 respectively. A plug-in pipe 36 is rotatably connected in each of the two connecting pipes 33, and the two plug-in pipes 36 are respectively fixedly connected to the two turntables 40, and the two turntables 40 are respectively rotatably connected in the two housings 34. A gear 52 is provided at the fixed connection between the two turntables 40, and the gear 52 is meshed with a rack 53 for transmission, and the rack 53 is connected to the output end of the hydraulic cylinder 54;

[0058] The rotary disk 40 is provided with a channel 1 41, a channel 2 42 and a spare channel 43. The ends of the channel 1 41, the channel 2 42 and the spare channel 43 are all slidably connected with spring blocking valves. The housing 34 is provided with three through holes 41, the ends of the three spring blocking valves are respectively clamped in the three through holes 51. Three connectors 44 are fixed to the outside of the housing 34. The two ends of the defrost pipe 1 28 are respectively plugged and fixed with the two connectors 44 corresponding to the two channels 1 41. The two ends of the defrost pipe 2 32 are respectively plugged and fixed with the two connectors 44 corresponding to the two channels 2 42. The outer sides of the connectors 44 corresponding to the spare channel 43 are threadedly connected with sealing covers 45.

[0059] The working principle of the above technical solution is as follows: when channel 1 41 is connected to defrost pipe 1 28 and channel 2 42 is connected to defrost pipe 2 32, the condensed medium in medium storage tank 1 25 enters the left connecting pipe 33 through driving pump 1 26, then enters the left plug-in pipe 36, and then enters the defrost pipe 1 28 through channel 1 41, the spring blocking valve, the through hole 4 51 and the connector 44 on the left. After the condensed medium defrosts the outside of the gas-liquid separation box 12 in the defrost pipe 1 28, it enters the right plug-in pipe 36 through the right connector 44, the through hole 4 51, the spring blocking valve and channel 1 41, and then flows back into medium storage tank 2 29 through the right connecting pipe 33.

[0060] The condensed medium in the medium storage tank 1 25 enters the left connecting pipe 33 through the driving pump 1 26 , then enters the left plug-in pipe 36 , and then enters the second defrost pipe 32 through the left channel 2 42 , the spring blocking valve, the fourth through-hole 51 , and the connector 44 . After the condensed medium defrosts the outside of the oil outlet pipe 19 in the second defrost pipe 32 , it enters the right plug-in pipe 36 through the right connector 44 , the fourth through-hole 51 , the spring blocking valve, and the second channel 42 , and then flows back into the medium storage tank 2 29 through the right connecting pipe 33 .

[0061] By simultaneously defrosting the first and second defrost pipes 28 and 32, the defrost area and range are increased;

[0062] When there is frost on the outside of the oil outlet pipe 19 and there is no frost on the outside of the gas-liquid separation box 12, it is only necessary to defrost the outside of the oil outlet pipe 19, that is, the defrost pipe 1 28 is in the non-working state and the defrost pipe 2 32 is in the working state, the hydraulic cylinder 54 is started, the rack 53 is driven to move upward, the gear 52 is driven to rotate 90 degrees, and the two turntables 40 are driven to rotate 90 degrees in the two shells 34 respectively, the channel 1 41, the channel 2 42 and the spare channel 43 are all rotated 90 degrees along with the turntable 40, and the through hole 4 51 corresponding to the defrost pipe 1 28 is blocked by the turntable 40, and the condensed medium cannot flow into the defrost pipe 1 28, that is, the defrost pipe 1 28 is in the non-working state. After the channel 1 41 rotates 90 degrees along with the turntable 40, the channel 1 41 is connected with the defrost pipe 2 32 through the through hole 4 51, and the condensed medium can flow into the defrost pipe 2 32 through the channel 1 41 and the through hole 4 51, and the defrost pipe 2 32 defrosts the outside of the oil outlet pipe 19;

[0063] When there is no frost on the outside of the oil outlet pipe 19 and there is frost on the outside of the gas-liquid separation box 12, it is only necessary to defrost the outside of the oil outlet pipe 19, that is, the defrost pipe 1 28 is in working state and the defrost pipe 2 32 is in non-working state, start the hydraulic cylinder 54, drive the rack 53 to move upward, drive the gear 52 to rotate 180 degrees, drive the two turntables 40 to rotate 180 degrees in the two shells 34 respectively, and the through hole 4 51 corresponding to the defrost pipe 2 32 blocks the turntable 40, and the condensed medium cannot flow into the defrost pipe 2 32, that is, the defrost pipe 2 32 is in non-working state, and the spare channel 43 rotates 180 degrees with the turntable 40. The spare channel 43 is connected with the defrost pipe 1 28 through the through hole 4 51. The condensed medium can flow into the defrost pipe 1 28 through the channel 1 41 and the through hole 4 51, and the defrost pipe 1 28 defrosts the outside of the oil outlet pipe 19;

[0064] By rotating the control dial 40 and changing the positions of channel 1 41, channel 2 42 and spare channel 43, the operation of defrost pipe 1 28 or defrost pipe 2 32 can be controlled. The defrost can be controlled according to the frost position, which increases the flexibility of defrost and saves energy.

[0065] The sealing cover 45 can be removed, and the connector 44 corresponding to the sealing cover 45 is connected to a spare defrost pipe (not shown) to further increase the defrost area.

[0066] Example 6

[0067] like Figures 1-9As shown, the three spring blocking valves have the same structure. For the spring blocking valve in the channel 1 41, the spring blocking valve includes a slide post 46. The upper end of the slide post 46 slides in the channel 1 41, and the lower end of the slide post 46 is clamped in the through hole 4 51. The slide post 46 is provided with a chamber 1 49. A chamber 2 57 is provided between the rotary disk 40 and the slide post 46. The channel 1 41 is connected to the chamber 2 57 through the through hole 1 47 provided on the slide post 46. The chamber 2 57 is connected to the chamber 1 49 through the through hole 2 48 provided on the slide post 46. The chamber 49 is connected to the connector 44 through the through hole 3 50 and the through hole 4 51. A spring 2 56 is provided between the slide post 46 and the rotary disk 40. A sealing gasket 2 55 is provided on the slide post 46. The through hole 3 50 is provided at the lower end of the slide post 46.

[0068] The working principle of the above technical solution is as follows: the condensing medium enters the slide 46 through the channel 1 41, enters the chamber 2 57 through the through hole 1 47, enters the chamber 1 49 through the through hole 2 48, and enters the defrost pipe 1 28 through the through hole 3 50, the through hole 4 51 and the connector 44. When the turntable 40 rotates in the shell 34, the lower end of the slide 46 moves out from the through hole 4 51, and the slide 46 moves upward in the through hole 1 47, driving the spring 2 56 to be compressed, driving the through hole 1 47 to move upward into the through hole 1 47, and the sealing gasket 2 55 abuts against the turntable 40, thereby closing the channel of the through hole 1 47 to prevent the condensing medium from leaking when the turntable 40 is rotated and adjusted.

[0069] Example 7

[0070] like Figures 1-9 As shown, a sealing gasket 35 is provided between the end of the connecting tube 33 and the plug-in tube 36. A gasket 37 and a second gasket 38 are rotatably connected to the outside of the plug-in tube 36. The gasket 37 abuts against the inner edge of the plug-in tube 36, and the second gasket 38 abuts against the housing 34. A spring 39 is provided between the gasket 37 and the second gasket 38.

[0071] The working principle of the above technical solution is as follows: the turntable 40 rotates, driving the plug-in tube 36 to rotate, causing the end of the plug-in tube 36 to slide with the gasket 1 37. Under the elastic force of the spring 1 39, the gasket 1 37 pushes the end of the plug-in tube 36 to press tightly against the sealing gasket 1 35, thereby enhancing the airtightness between the end of the plug-in tube 36 and the connecting tube 33.

[0072] Example 8

[0073] like Figures 1-9 As shown, an oil and gas defrosting method for oil and gas recovery is applied to any of the oil and gas defrosting systems for oil and gas recovery described above, comprising the following steps:

[0074] S1. Oil and gas are sent into the oil pipe assembly, and the condensing medium in the heat exchange assembly cools the oil and gas;

[0075] S2. After the oil and gas are cooled and liquefied into the oil liquid, they enter the gas-liquid separation component. The unliquefied oil and gas flow back through the return pipe 16 to the oil pipe component for cooling and liquefaction again.

[0076] S3. After heat exchange, the condensing medium flows into the defrost pipe 28 and the defrost pipe 2 32 through the diversion control assembly 27. The defrost pipe 28 and the defrost pipe 2 32 defrost the outside of the gas-liquid separation assembly;

[0077] The working principle of the above technical solution is: the oil and gas are sent into the oil pipe assembly, and the condensing medium in the heat exchange assembly cools the oil and gas. After the oil and gas are cooled and cooled, they are liquefied into oil and enter the gas-liquid separation assembly. After the oil and gas are cooled and liquefied into oil and enter the gas-liquid separation assembly, the unliquefied oil and gas return to the oil pipe assembly through the return pipe 16 to be cooled and liquefied again. The temperature of the condensing medium increases after heat exchange, and the condensing medium with increased temperature flows into the defrost pipe 1 28 and the defrost pipe 2 32 through the diverter control assembly 27. The defrost pipe 1 28 and the defrost pipe 2 32 defrost the outside of the gas-liquid separation assembly. The diverter control assembly 27 can control the condensing medium with increased temperature to flow into the defrost pipe 1 28 or the defrost pipe 2 32 or both. The defrost can be controlled according to the frost position, which increases the flexibility of defrosting and avoids energy waste.

[0078] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An oil and gas defrosting system for oil and gas recovery, characterized in that: The invention comprises an oil pipe assembly, a heat exchange assembly is provided on the outside of the oil pipe assembly, a gas-liquid separation assembly is provided at the end of the oil pipe assembly, a defrost pipe 1 (28) and a defrost pipe 2 (32) are provided on the outside of the gas-liquid separation assembly, the defrost pipe 1 (28) and the defrost pipe 2 (32) defrost the outside of the gas-liquid separation assembly, and the defrost pipe 1 (28) and the defrost pipe 2 (32) are both connected to a diversion control assembly (27) provided at the end of the heat exchange assembly.

2. The oil and gas defrosting system for oil and gas recovery according to claim 1, characterized in that: The oil pipe assembly comprises a first oil and gas pipe (1), one end of the first oil and gas pipe (1) is fixedly connected to the end of the air inlet pipe (5), the other end of the first oil and gas pipe (1) is fixedly connected to one end of the second oil and gas pipe (6) through an elbow pipe (4), the other end of the second oil and gas pipe (6) is fixedly connected to one end of the third oil and gas pipe (9) through an elbow pipe (8), the other end of the third oil and gas pipe (9) is fixedly connected to the outlet pipe (11), and the lower end of the outlet pipe (11) is connected to the gas-liquid separation assembly.

3. The oil and gas defrosting system for oil and gas recovery according to claim 2, characterized in that: The heat exchange assembly comprises a first sleeve (2), a second sleeve (7) and a third sleeve (10); the first sleeve (2) is sleeved on the outside of the first oil and gas pipe (1); the second sleeve (7) is sleeved on the outside of the second oil and gas pipe (6); the third sleeve (10) is sleeved on the outside of the third oil and gas pipe (9); and spiral guide plates (3) are provided in the first sleeve (2), the second sleeve (7) and the third sleeve (10).

4. The oil and gas defrosting system for oil and gas recovery according to claim 3, characterized in that: The first sleeve (2), the second sleeve (7) and the third sleeve (10) are connected in series end to end. The end of the first sleeve (2) is connected to the medium storage box (25) through the condenser pipe (24), and the end of the third sleeve (10) is connected to the driving pump (30) through the condenser pipe (31).

5. The oil and gas defrosting system for oil and gas recovery according to claim 4, characterized in that: The medium storage box 1 (25) is connected to the diversion control component (27) through the driving pump 1 (26), the driving pump 2 (30) is connected to the medium storage box 2 (29), and the medium storage box 2 (29) is connected to the diversion control component (27).

6. The oil and gas defrosting system for oil and gas recovery according to claim 5, characterized in that: The gas-liquid separation component includes a gas-liquid separation box (12), the lower end of the gas outlet pipe (11) is connected to the gas-liquid separation box (12), a defrost pipe (28) is wound on the outside of the gas-liquid separation box (12), a vertical downward partition (13) is provided in the gas-liquid separation box (12), a plurality of downward inclined guide plates (14) are provided on the inner wall of the gas-liquid separation box (12) and the side wall of the partition (13), a liquid level detector (15) is provided in the gas-liquid separation box (12), the bottom of the detection end of the liquid level detector (15) is flush with the partition (13), a water collecting tank (17) is provided at the lower end of the gas-liquid separation box (12), and the water collecting tank (17) is connected to the water outlet pipe (18).

7. The oil and gas defrosting system for oil and gas recovery according to claim 6, characterized in that: The lower end of the gas-liquid separation box (12) is connected to an oil outlet pipe (19), a second defrost pipe (32) is wound around the outside of the oil outlet pipe (19), a ball valve (20) is provided in the oil outlet pipe (19), the ball valve (20) is connected to the output end of a motor (21), the motor (21) is fixed to the outside of the oil outlet pipe (19), the upper end of the gas-liquid separation box (12) is fixed to one end of a return pipe (16), the other end of the return pipe (16) is fixed to the air inlet pipe (5), and a second guide plate (23) is provided in the air inlet pipe (5).

8. The oil and gas defrosting system for oil and gas recovery according to claim 7, characterized in that: The flow dividing control assembly (27) comprises two connecting pipes (33), one end of the two connecting pipes (33) is respectively connected to the driving pump 1 (26) and the medium storage box 2 (29), the other end of the two connecting pipes (33) is respectively fixedly connected to the two shells (34), the two connecting pipes (33) are both rotatably connected with the plug-in pipes (36), the two plug-in pipes (36) are respectively fixedly connected to the two rotating disks (40), the two rotating disks (40) are respectively rotatably connected in the two shells (34), and a gear (52) is provided at the fixed connection of the two rotating disks (40), the gear (52) is meshed with the rack (53) for transmission, and the rack (53) is connected to the output end of the hydraulic cylinder (54).

9. The oil and gas defrosting system for oil and gas recovery according to claim 8, characterized in that: The rotary disc (40) is provided with a channel 1 (41), a channel 2 (42) and a spare channel (43), and the ends of the channel 1 (41), the channel 2 (42) and the spare channel (43) are all slidably connected with spring blocking valves. The shell (34) is provided with three through holes 4 (51), and the ends of the three spring blocking valves are respectively clamped in the three through holes 4 (51). Three connectors (44) are fixed on the outside of the shell (34). The two ends of the defrost pipe 1 (28) are respectively plugged and fixed with the two connectors (44) corresponding to the two channel 1s (41), and the two ends of the defrost pipe 2 (32) are respectively plugged and fixed with the two connectors (44) corresponding to the two channel 2s (42). The outer side of the connector (44) corresponding to the spare channel (43) is threadedly connected with a sealing cover (45).

10. An oil and gas defrosting method for oil and gas recovery, applied to an oil and gas defrosting system for oil and gas recovery according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Oil and gas are sent into the oil pipe assembly, and the condensing medium in the heat exchange assembly cools the oil and gas; S2. After the oil and gas are cooled and liquefied into the oil liquid, they enter the gas-liquid separation component. The unliquefied oil and gas flow back through the return pipe (16) to the oil pipe component to be cooled and liquefied again. S3. After heat exchange, the condensed medium flows into the defrost pipe 1 (28) and the defrost pipe 2 (32) through the diversion control component (27), and the defrost pipe 1 (28) and the defrost pipe 2 (32) defrost the outside of the gas-liquid separation component.

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