A kind of anti-condensation seamless steel pipe for petroleum engineering

Abstract

The utility model relates to the field of oil transportation, and discloses an anti-condensation seamless steel pipe for oil engineering, including an outer seamless steel pipe, the inner side of the outer seamless steel pipe is fixedly connected with an inner liner, an oil anti-condensation component is installed inside the inner liner, the inner side of the outer seamless steel pipe is fixedly connected with sound insulation filling cotton, a plurality of support and pressure-resistant components are installed inside the outer seamless steel pipe, a plurality of fixed notches are evenly opened around the outer side of the inner liner, the inner side of the inner liner is coated with a polytetrafluoroethylene coating, and the support and pressure-resistant component includes a plurality of support strips inserted inside the sound insulation filling cotton. In the utility model, the oil is disturbed inside the pipeline, and a stable flow characteristic is formed with appropriate spacing, so that the oil inside the pipeline is stably transported, and wax deposition is avoided, and the pressure resistance of the steel pipe for support is further improved, and the stability of the steel pipe in use is improved.

Description

Technical Field

[0001] The utility model relates to the field of petroleum transportation, in particular to an anti-condensation seamless steel pipe for petroleum engineering. Background Art

[0002] Seamless steel pipe is a steel pipe without joints, usually made of solid round steel through perforation and then stretching or rolling. In pipeline engineering, seamless steel pipe is widely used due to its compact structure, high strength, strong pressure resistance and good corrosion resistance. It is used to transport oil and ensure the stability of oil transportation.

[0003] After searching, the anti-condensation seamless steel pipe for petroleum engineering with announcement number CN212079225U includes a steel pipe body, an outer casing is arranged on the outside of the steel pipe body, and an inner conveying pipe is movably installed inside the steel pipe body, several groups of movable rotating rods are evenly installed between the outer casing and the inner conveying pipe, a fixing is installed between the two groups of movable rotating rods, and the end of the movable rotating rod in contact with the outside is fixedly connected to the dust cover, and several groups of reinforced blocks are evenly arranged on the inner wall of the inner conveying pipe, and conveying channels are opened on both sides of the reinforced blocks. This new anti-condensation seamless steel pipe for petroleum engineering can produce a certain centrifugal effect in the spiral conveying channel under the impact of the oil transportation process, so that the inner conveying pipe shakes or rotates under the action of the movable rotating rod, so that the oil inside it can keep moving, reduce the possibility of its condensation, and thus avoid the blockage of the pipeline by oil during transportation.

[0004] Based on the above patent, the existing seamless steel pipes for petroleum mentioned in the background technology have certain disadvantages during use. Since the temperature of petroleum is relatively low inside the oil well, it may condense during transportation due to its low temperature characteristics. In this way, blockage is likely to occur, which is very unfavorable for the processing process. In this regard, in response to this technical problem, this application proposes an anti-condensation seamless steel pipe for petroleum engineering. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and proposes an anti-condensation seamless steel pipe for petroleum engineering, which avoids the wax deposition phenomenon and improves the stability of the steel pipe in use.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A seamless steel pipe with an anti-condensation property for use in petroleum engineering comprises an outer seamless steel pipe, an inner liner pipe is fixedly connected to the inner side of the outer seamless steel pipe, an oil anti-condensation component is installed inside the inner liner pipe, sound insulation filling cotton is fixedly connected to the inner side of the outer seamless steel pipe, a plurality of supporting and pressure-resistant components are installed inside the outer seamless steel pipe, a plurality of fixed grooves are evenly arranged around the outer side of the inner liner pipe, and the inner side of the inner liner pipe is coated with a polytetrafluoroethylene coating.

[0008] Furthermore, the supporting pressure-resistant component includes a plurality of supporting strips inserted inside the sound insulation filling cotton, the bottom ends of the supporting strips are fixedly connected with supporting arc pieces, and the bottom ends of the supporting arc pieces are evenly fixedly connected with a plurality of fixing columns.

[0009] Furthermore, the petroleum anti-coagulation component includes a plurality of blocking corrugations located inside the inner liner pipe, and the sides of the blocking corrugations are provided with traction slopes.

[0010] Furthermore, the height of the barrier corrugation is 1.5 mm.

[0011] Furthermore, the spacing between the plurality of barrier corrugations is 5 mm.

[0012] Furthermore, the outer sides of the supporting strips are respectively fixedly connected to the inside of the outer seamless steel pipe, and the inner sides of the supporting arc pieces are respectively fitted to the outside of the inner lining pipe.

[0013] Furthermore, the exterior of the fixing columns are respectively fixedly connected to the interior of the fixing slots.

[0014] Furthermore, an outer wear-resistant layer is fixedly connected to the outside of the outer seamless steel pipe.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, the transmission of oil is completed through the outer seamless steel pipe, the inner liner, the polytetrafluoroethylene coating, the barrier corrugation, and the traction slope. The oil is disturbed inside the pipeline, and the appropriate spacing forms a stable flow characteristic, so that the oil inside the pipeline is stably transported to avoid wax deposition.

[0017] 2. In the utility model, the steel pipe is supported by an outer seamless steel pipe, an inner lining pipe, a supporting strip, a supporting arc sheet, a fixed column, a fixed notch, sound insulation filling cotton, and an outer wear-resistant layer, thereby further improving the compressive resistance of the steel pipe and improving the stability of the steel pipe in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall diagram of a seamless steel pipe for petroleum engineering proposed by the utility model;

[0019] Figure 2 This is an internal diagram of an anti-condensation seamless steel pipe for petroleum engineering proposed by the utility model;

[0020] Figure 3 This is a layer diagram of a seamless steel pipe for petroleum engineering proposed by the utility model;

[0021] Figure 4 This is a diagram of a supporting strip structure of an anti-condensation seamless steel pipe for petroleum engineering proposed by the utility model;

[0022] Figure 5 This is a diagram of the sound insulation filling cotton structure of a condensation-resistant seamless steel pipe for petroleum engineering proposed by the utility model;

[0023] Figure 6 The utility model discloses a liner structure diagram of an anti-condensation seamless steel pipe for petroleum engineering.

[0024] Legend:

[0025] 1. Outer seamless steel pipe; 2. Inner lining pipe; 3. Polytetrafluoroethylene coating; 4. Barrier corrugation; 5. Traction slope; 6. Outer wear-resistant layer; 7. Support strips; 8. Support arc pieces; 9. Fixed columns; 10. Sound insulation filling cotton; 11. Fixed notches. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1 , Figure 2 and Figure 6 The utility model provides an embodiment: an anti-condensation seamless steel pipe for petroleum engineering, comprising an outer seamless steel pipe 1, an inner liner 2 is fixedly connected to the inner side of the outer seamless steel pipe 1, an oil anti-condensation component is installed inside the inner liner 2, a sound insulation filling cotton 10 is fixedly connected to the inner side of the outer seamless steel pipe 1, a plurality of supporting and pressure-resistant components are installed inside the outer seamless steel pipe 1, a plurality of fixed notches 11 are evenly opened around the outer side of the inner liner 2, a polytetrafluoroethylene coating 3 is coated on the inner side of the inner liner 2, the oil anti-condensation component comprises a plurality of blocking corrugations 4 located inside the inner liner 2, a traction slope 5 is opened on the side of the blocking corrugation 4, the height of the blocking corrugation 4 is 1.5 mm, the spacing between the plurality of blocking corrugations 4 is 5 mm, and an outer wear-resistant layer 6 is fixedly connected to the outer side of the outer seamless steel pipe 1;

[0028] When the oil flows inside the inner liner pipe 2, the oil contacts the blocking corrugation 4 and is thrown upward by the inclined surface of the traction slope 5 to stir the oil. The higher corrugation height can disturb the fluid flow and form local eddies and turbulence. The design of the corrugation spacing of 5 mm can form a uniform disturbance effect in the fluid flow, avoiding the adverse effects of overly dense or sparse corrugation structures on the fluid flow. The appropriate spacing helps to form stable flow characteristics and avoid the condensation of oil.

[0029] Reference Figure 3 , Figure 4 , Figure 5 and Figure 6 The supporting pressure-resistant component includes a plurality of supporting strips 7 inserted inside the sound insulation filling cotton 10, the bottom ends of the supporting strips 7 are fixedly connected with supporting arc pieces 8, the bottom ends of the supporting arc pieces 8 are evenly fixedly connected with a plurality of fixing columns 9, the outer sides of the supporting strips 7 are respectively fixedly connected to the inside of the outer seamless steel pipe 1, the inner sides of the supporting arc pieces 8 are respectively correspondingly fitted to the outside of the inner liner pipe 2, and the outer sides of the fixing columns 9 are respectively fixedly connected to the inside of the fixing notches 11;

[0030] When the external pressure acts on the outside of the outer seamless steel pipe 1, the multiple supporting strips 7 inside the outer seamless steel pipe 1 evenly transmit the external force to the outside of the inner liner pipe 2, and expand the contact area of ​​the inner liner pipe 2 through the supporting arc pieces 8, so as to disperse the force more evenly, thereby further improving the pressure resistance of the steel pipe and improving the stability of the steel pipe in use.

[0031] Working principle: When the oil flows inside the inner liner pipe 2, the oil contacts the blocking corrugation 4 and is thrown upward by the inclined surface of the traction slope 5 to stir the oil. The higher corrugation height can disturb the fluid flow and form local eddies and turbulence. The design of the corrugation spacing of 5 mm can form a uniform disturbance effect in the fluid flow, avoiding the adverse effects of overly dense or sparse corrugated structures on the fluid flow. The appropriate spacing helps to form stable flow characteristics and avoid the anti-coagulation caused by oil. When the external pressure acts on the outside of the outer seamless steel pipe 1, the multiple support strips 7 inside the outer seamless steel pipe 1 evenly transmit the external force to the outside of the inner liner pipe 2, and expand the contact area of ​​the inner liner pipe 2 through the supporting arc pieces 8, so as to disperse the force more evenly, thereby further improving the pressure resistance of the steel pipe.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A seamless steel pipe for petroleum engineering, comprising an outer seamless steel pipe (1), characterized in that: The inner side of the outer seamless steel pipe (1) is fixedly connected to an inner lining pipe (2), a petroleum anti-coagulation component is installed inside the inner lining pipe (2), a sound insulation filling cotton (10) is fixedly connected to the inner side of the outer seamless steel pipe (1), a plurality of supporting and pressure-resistant components are installed inside the outer seamless steel pipe (1), a plurality of fixed grooves (11) are evenly arranged around the outer side of the inner lining pipe (2), and a polytetrafluoroethylene coating (3) is coated on the inner side of the inner lining pipe (2).

2. The anti-condensation seamless steel pipe for petroleum engineering according to claim 1, characterized in that: The supporting pressure-resistant component comprises a plurality of supporting strips (7) inserted into the sound insulation filling cotton (10), the bottom ends of the supporting strips (7) are fixedly connected to supporting arc pieces (8), and the bottom ends of the supporting arc pieces (8) are evenly fixedly connected to a plurality of fixing columns (9).

3. The anti-condensation seamless steel pipe for petroleum engineering according to claim 1, characterized in that: The petroleum anti-coagulation component comprises a plurality of blocking corrugations (4) located inside the inner lining pipe (2), and the sides of the blocking corrugations (4) are each provided with a traction slope (5).

4. The anti-condensation seamless steel pipe for petroleum engineering according to claim 3, characterized in that: The height of the barrier corrugation (4) is 1.5 mm.

5. The anti-condensation seamless steel pipe for petroleum engineering according to claim 3, characterized in that: The spacing between the plurality of barrier corrugations (4) is 5 mm.

6. The anti-condensation seamless steel pipe for petroleum engineering according to claim 2, characterized in that: The outer sides of the supporting strips (7) are respectively fixedly connected to the inside of the outer seamless steel pipe (1), and the inner sides of the supporting arc sheets (8) are respectively fitted to the outside of the inner lining pipe (2).

7. The anti-condensation seamless steel pipe for petroleum engineering according to claim 2, characterized in that: The exterior of the fixing column (9) is respectively fixedly connected to the interior of the fixing notch (11).

8. The anti-condensation seamless steel pipe for petroleum engineering according to claim 1, characterized in that: An outer wear-resistant layer (6) is fixedly connected to the outside of the outer seamless steel pipe (1).

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