CN215337096U

CN215337096U - Crude oil heating device for oil production wellhead

Info

Publication number: CN215337096U
Application number: CN202121368497.4U
Authority: CN
Inventors: 崔恒啸; 韩富贵; 燕苗苗; 申凯文; 黄雅睿; 孟昭
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-28
Anticipated expiration: 2031-06-21

Abstract

The utility model belongs to the technical field of crude oil exploitation, and particularly relates to a crude oil heating device for an oil extraction wellhead, which comprises an oil delivery pipe, wherein the outer surface of the oil delivery pipe is fixedly connected with the inner wall of a fixed block, the outer surface of the fixed block is fixedly connected with the inner wall of a protective pipe, two threaded holes are symmetrically formed in the right side surface of the oil delivery pipe, bolts are connected with the threaded holes in a threaded manner, the two bolts are respectively and threadedly connected to the right side surface of a connecting plate, external air is pumped by an air inlet of the air heater through an air heater, an air outlet pipe and an air inlet pipe, the heated air is discharged into a cavity between the protective pipe and the oil delivery pipe through the air outlet pipe and the air inlet pipe, hot air flow heats the outer surface of the oil delivery pipe, crude oil in the oil delivery pipe is heated by heating the outer surface of the oil delivery pipe, crude oil solidification is avoided, and the problem that the existing device is low in heating efficiency is solved, inconvenient maintenance and high maintenance cost.

Description

Crude oil heating device for oil production wellhead

Technical Field

The utility model belongs to the technical field of crude oil exploitation, and particularly relates to a crude oil heating device for an oil extraction wellhead.

Background

Untreated petroleum is conventionally referred to as crude oil. A black brown viscous oily liquid with green fluorescence and special odor is provided. The liquid hydrocarbon mixture is a mixture of a plurality of liquid hydrocarbons such as alkane, cyclane, aromatic hydrocarbon, alkene and the like.

Because crude oil viscosity is different, and low temperature in some areas causes unsmooth flow of crude oil and even solidification of the crude oil, so that pipeline blockage is caused, in order to avoid blockage of an oil conveying pipeline, a water jacket heating furnace and an electric heating tube heater are generally adopted, the heat efficiency is low, the maintenance is inconvenient, the maintenance cost is high, and the viscosity of the crude oil causes that part of the crude oil can be adsorbed on the pipe wall of the oil conveying pipe, and the oil conveying pipeline can be blocked by continuous accumulation.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a crude oil heating device for an oil extraction wellhead.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an oil recovery well head crude oil heating device, includes defeated oil pipe, defeated oil pipe's surface and the inner wall rigid coupling of fixed block, the surface of fixed block and the inner wall rigid coupling of protective tube, two screw holes have been seted up to defeated oil pipe's right flank symmetry, screw hole female connection has the bolt, and two the bolt is threaded connection respectively at the right flank of connecting plate, the right flank of connecting plate is equipped with the desilting subassembly, the upper surface of protective tube is equipped with heating element.

Preferably, the heating assembly comprises an air inlet pipe communicated with the upper surface of the protective pipe, the other end of the air inlet pipe is communicated with one end of the air outlet pipe through a flange, the other end of the air outlet pipe is communicated with the air outlet end of the air heater, the lower surface of the protective pipe is communicated with one end of an exhaust pipe, the other end of the exhaust pipe is communicated with one end of an air return pipe through a flange, and the other end of the air return pipe is communicated with the air inlet end of the air heater.

Preferably, the desilting subassembly is including installing the step motor at the connecting plate right flank, step motor's output shaft and the right flank rigid coupling of screw rod, the left end of screw rod passes the bearing of connecting plate right flank joint and extends to the oil transportation intraduct, the surface threaded connection of screw rod has the screw cap, the surface symmetry rigid coupling respectively of screw cap has a plurality of telescopic link and spring, the upper surface of telescopic link and spring and the lower surface rigid coupling of scraper.

Preferably, the inner wall of the protective pipe is covered with a heat-insulating coating, and the heat-insulating coating is made of a ceramic coating.

Preferably, the position of bolt corresponds with the position of screw hole, the left surface of connecting plate passes through the bolt and can dismantle with the right flank of defeated oil pipe and be connected.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the air heater, the air outlet pipe and the air inlet pipe are arranged, external air is extracted from the air inlet of the air heater to be heated, the heated air is discharged into the cavity between the protective pipe and the oil conveying pipe through the air outlet pipe and the air inlet pipe, the hot air flow heats the outer surface of the oil conveying pipe, and crude oil in the oil conveying pipe is heated by heating the outer surface of the oil conveying pipe, so that crude oil solidification is avoided, and the problems of low heating efficiency, inconvenience in maintenance and high maintenance cost of the conventional device are solved.

2. According to the utility model, the stepping motor, the threaded sleeve, the screw rod and the scraper are arranged, the stepping motor is started to drive the threaded sleeve to move leftwards along the screw rod, the scraper on the outer surface of the threaded rod scrapes crude oil covered on the surface of the pipe wall along with the rotation of the threaded sleeve, the crude oil is prevented from being accumulated on the pipe wall of the oil conveying pipe, and the problem that the oil conveying pipe is possibly blocked due to the fact that part of the crude oil is adsorbed on the pipe wall of the oil conveying pipe and is continuously accumulated is solved.

3. According to the utility model, the telescopic rod and the spring are arranged, and can drive the scraper to contract, so that the scraper is suitable for oil pipelines with different pipe diameters, the application range of the dredging component is increased, and meanwhile, the telescopic rod and the spring push the scraper to more powerfully scrape crude oil deposited on the pipe wall of the oil pipeline under the action of the self elasticity of the spring.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic right-side view of the cross-sectional structure of the present invention;

FIG. 3 is a rear view of the present invention;

FIG. 4 is an enlarged view of the structure at A in the present invention;

in the figure: 1. an oil delivery pipe; 2. a fixed block; 3. a protective tube; 4. a heat-insulating coating;

heating the assembly: 51. an air inlet pipe; 52. an exhaust pipe; 53. an air return pipe; 54. an air outlet pipe; 55. an air heater;

6. a threaded hole; 7. a connecting plate;

the dredging component: 81. a stepping motor; 82. a threaded cap; 83. a spring; 84. a telescopic rod; 85. a scraper; 86. a screw;

9. and (4) bolts.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides an oil recovery well head crude oil heating device, includes defeated oil pipe 1, defeated oil pipe 1's surface and fixed block 2's inner wall rigid coupling, fixed block 2's surface and protective tube 3's inner wall rigid coupling, two screw holes 6 have been seted up to defeated oil pipe 1's right flank symmetry, 6 threaded connection in screw hole has bolt 9, and two bolt 9 threaded connection is respectively at the right flank of connecting plate 7, the right flank of connecting plate 7 is equipped with the desilting subassembly, the upper surface of protective tube 3 is equipped with heating element.

Specifically, the heating assembly comprises an air inlet pipe 51 communicated with the upper surface of the protective pipe 3, the other end of the air inlet pipe 51 is communicated with one end of an air outlet pipe 54 through a flange, the other end of the air outlet pipe 54 is communicated with the air outlet end of an air heater 55, the lower surface of the protective pipe 3 is communicated with one end of an air outlet pipe 52, the other end of the air outlet pipe 52 is communicated with one end of an air return pipe 53 through a flange, and the other end of the air return pipe 53 is communicated with the air inlet end of the air heater 55;

air heater 55's air inlet extracts outside air and heats, the air after the heating is discharged into the cavity between protective tube 3 and defeated oil pipe 1 through outlet duct 54 and intake pipe 51, the hot gas flow heats defeated oil pipe 1 surface, the surface through heating defeated oil pipe 1 heats the inside crude oil of defeated oil pipe 1, avoid crude oil to solidify, absorb microthermal air and move down and flow back into air heater 55 through blast pipe 52 and muffler 53 in, air heater 55 heats the low temperature air, evaporate moisture in the low temperature air.

Specifically, the dredging component comprises a stepping motor 81 arranged on the right side surface of the connecting plate 7, an output shaft of the stepping motor 81 is fixedly connected with the right side surface of a screw 86, the left end of the screw 86 penetrates through a bearing clamped on the right side surface of the connecting plate 7 and extends into the oil conveying pipe 1, a threaded cap 82 is in threaded connection with the outer surface of the screw 86, a plurality of telescopic rods 84 and springs 83 are respectively and symmetrically fixedly connected with the outer surface of the threaded cap 82, and the upper surfaces of the telescopic rods 84 and the springs 83 are fixedly connected with the lower surface of a scraper 85;

starting step motor 81 through external power supply, step motor 81 starts to drive the thread bush and prolongs screw rod 86 and remove left, and the scraper 85 of threaded rod surface strikes off along with the rotatory crude oil of geminate transistors wall surface covering of thread bush, avoids crude oil to pile up at defeated oil pipe 1 pipe wall, and telescopic link 84 and spring 83 can drive scraper 85 to shrink simultaneously to adapt to the defeated oil pipe 1 of different pipe diameters, increase desilting subassembly's application scope.

Specifically, a heat-insulating coating 4 covers the inner wall of the protective pipe 3, and the heat-insulating coating 4 is made of a ceramic coating;

the ceramic coating has the effects of corrosion resistance, low heat conduction and high heat insulation, can prevent the protective pipe 3 from being damaged by high temperature, and simultaneously keeps the temperature of hot air flow discharged by the air heater 55 to be longer.

Specifically, the left side surface of the connecting plate 7 is detachably connected with the right side surface of the oil pipeline 1 through the bolt 9 by setting the position of the bolt 9 to correspond to the position of the threaded hole 6;

after the inner wall of the oil delivery pipe 1 is cleaned, people can detach the bolt 9 from the threaded hole 6 by rotating the bolt 9, and take out the screw 86, the telescopic rod 84 and the scraper 85 from the oil delivery pipe 1 for cleaning and maintenance.

The working principle and the using process of the utility model are as follows:

the utility model, when in use;

an air inlet of the air heater 55 extracts external air for heating, the heated air is discharged into a cavity between the protective pipe 3 and the oil delivery pipe 1 through an air outlet pipe 54 and an air inlet pipe 51, hot air flow heats the outer surface of the oil delivery pipe 1, crude oil inside the oil delivery pipe 1 is heated by heating the outer surface of the oil delivery pipe 1, crude oil solidification is avoided, low-temperature air is absorbed to move downwards and flows back into the air heater 55 through an air outlet pipe 52 and an air return pipe 53, the air heater 55 heats the low-temperature air, and moisture in the low-temperature air is evaporated;

starting step motor 81 through external power supply, step motor 81 starts to drive the thread bush and prolongs screw rod 86 and remove left, the scraper 85 of threaded rod surface strikes off along with the rotatory crude oil of pipe wall surface covering of thread bush, avoid crude oil to pile up at defeated oil pipe 1 pipe wall, telescopic link 84 and spring 83 can drive scraper 85 and contract simultaneously, thereby adapt to the defeated oil pipe 1 of different pipe diameters, increase the application scope of desilting subassembly, after the inner wall of defeated oil pipe 1 is clear away from finishing, people can be through rotating bolt 9, break away from bolt 9 and screw hole 6, take out screw rod 86 in defeated oil pipe 1, telescopic link 84 and scraper 85 wash and maintain.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an oil recovery well head crude oil heating device, includes defeated oil pipe (1), its characterized in that: the utility model discloses a safety protection device for oil pipeline, including defeated oil pipe (1), the surface of defeated oil pipe (1) and the inner wall rigid coupling of fixed block (2), the surface of fixed block (2) and the inner wall rigid coupling of protective tube (3), two screw holes (6) have been seted up to the right flank symmetry of defeated oil pipe (1), screw hole (6) female connection has bolt (9), and two bolt (9) threaded connection is the right flank in connecting plate (7) respectively, the right flank of connecting plate (7) is equipped with the desilting subassembly, the upper surface of protective tube (3) is equipped with heating element.

2. The oil recovery wellhead crude oil heating device according to claim 1, characterized in that: the heating assembly comprises an air inlet pipe (51) communicated with the upper surface of the protective pipe (3), the other end of the air inlet pipe (51) is communicated with one end of an air outlet pipe (54) through a flange, the other end of the air outlet pipe (54) is communicated with the air outlet end of an air heater (55), the lower surface of the protective pipe (3) is communicated with one end of an exhaust pipe (52), the other end of the exhaust pipe (52) is communicated with one end of an air return pipe (53) through a flange, and the other end of the air return pipe (53) is communicated with the air inlet end of the air heater (55).

3. The oil recovery wellhead crude oil heating device according to claim 1, characterized in that: the desilting subassembly is including installing step motor (81) at connecting plate (7) right flank, the output shaft of step motor (81) and the right flank rigid coupling of screw rod (86), the left end of screw rod (86) passes inside bearing extension to defeated oil pipe (1) of connecting plate (7) right flank joint, the surface threaded connection of screw rod (86) has screw cap (82), the surface symmetry rigid coupling respectively of screw cap (82) has a plurality of telescopic link (84) and spring (83), the upper surface of telescopic link (84) and spring (83) and the lower surface rigid coupling of scraper (85).

4. The oil recovery wellhead crude oil heating device according to claim 2, characterized in that: the inner wall of the protective pipe (3) is covered with a heat-insulating coating (4), and the heat-insulating coating (4) is made of a ceramic coating.

5. The oil recovery wellhead crude oil heating device according to claim 1, characterized in that: the position of bolt (9) corresponds with the position of screw hole (6), the left surface of connecting plate (7) passes through bolt (9) and can dismantle with the right flank of defeated oil pipe (1) and be connected.