CN215928657U

CN215928657U - Double-layer anti-corrosion structure of petroleum pipeline

Info

Publication number: CN215928657U
Application number: CN202122313841.6U
Authority: CN
Inventors: 刘鹏
Original assignee: Langfang Decon Pipeline Equipment Co ltd
Current assignee: Langfang Decon Pipeline Equipment Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-01
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a double-layer anticorrosion structure of a petroleum pipeline, which comprises the petroleum pipeline, wherein an inner conveying pipe is arranged on the petroleum pipeline, a first inner anticorrosion layer is sprayed on the inner side of the inner conveying pipe, a first outer anticorrosion layer is wound on the outer side of the inner conveying pipe, a reinforcing sleeve is sleeved outside the inner conveying pipe, a second inner anticorrosion layer is sprayed on the inner side of the reinforcing sleeve, a second outer anticorrosion layer is wound on the outer side of the reinforcing sleeve, a heat insulation layer is filled between the inner conveying pipe and the reinforcing sleeve, two ends of the inner conveying pipe are connected with flange connecting seats, an outer isolation protective sleeve is sleeved outside the reinforcing sleeve, and supporting fastening strips are uniformly connected on the inner side of the outer isolation protective sleeve. This double-deck anticorrosive structure of petroleum pipeline adds externally and has established an outer isolation protective sleeve section of thick bamboo, can play the effect of protection to the anticorrosive structure of inside pipeline, reduces the contact of anticorrosive structure of pipeline and external environment, improves the protective action of anticorrosive structure of pipeline, effectively prolongs the life-span of anticorrosive structure of pipeline.

Description

Double-layer anti-corrosion structure of petroleum pipeline

Technical Field

The utility model relates to the technical field of petroleum pipelines, in particular to a double-layer anticorrosion structure of a petroleum pipeline.

Background

The petroleum pipeline is composed of oil pipes and accessories thereof, and is provided with corresponding oil pump units according to the requirements of the process flow, and is designed and installed into a complete pipeline system for completing the tasks of oil receiving, unloading and transferring. The pipe material of the petroleum pipeline is generally steel pipe, and is connected into a long-distance pipeline by welding, flange and other connecting devices, and is opened and closed and flow regulation is carried out by using a valve. The corrosion prevention of the petroleum pipeline is particularly important because the transported oil contains sulfur elements and acidic substances, and the pipeline is exposed in the open air and suffers from wind, wind and rain, so that the pipeline is easy to corrode.

The existing petroleum pipeline is coated with anticorrosive materials on the inner side and the outer side of the pipeline to realize anticorrosive treatment, but the petroleum pipeline is not only buried underground or directly laid on the earth surface, but also can be influenced by the environment, so that the external anticorrosive strength of the petroleum pipeline is insufficient, and the long-term use of the petroleum pipeline is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-layer anticorrosion structure for a petroleum pipeline, which aims to solve the problems that the petroleum pipeline in the current market is influenced by the environment no matter buried or directly laid on the ground surface, so that the external anticorrosion strength of the petroleum pipeline is insufficient, and the long-term use of the petroleum pipeline is influenced.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a double-deck anticorrosive structure of petroleum pipeline, includes petroleum pipeline, be equipped with interior conveyer pipe on the petroleum pipeline, and the inboard spraying of interior conveyer pipe has first interior anticorrosive coating to the interior conveyer pipe outside is around being equipped with first outer anticorrosive coating, interior conveyer pipe overcoat is equipped with the reinforcement sleeve pipe, and the inboard spraying of reinforcement sleeve pipe has anticorrosive coating in the second to the reinforcement sleeve pipe outside is around being equipped with the outer anticorrosive coating of second, it has the heat preservation to fill between interior conveyer pipe and the reinforcement sleeve pipe, and the interior conveyer pipe both ends all are connected with the flange joint seat, the reinforcement sleeve pipe overcoat is equipped with outer isolation lag section of thick bamboo, and outer isolation lag section of thick bamboo inboard evenly is connected with the support fastening strip.

Preferably, the outer isolation protection sleeve is of a circular sleeve structure and is located between the flange connecting seats.

Preferably, the length of the supporting fastening strips is equal to that of the outer isolating protective sleeve, and a buffer cavity is arranged between the supporting fastening strips.

Preferably, one side of the supporting and fastening strip, which is far away from the outer isolating and protecting sleeve, is of an arc-shaped structure, and one side of the arc-shaped structure of the supporting and fastening strip is in contact connection with the second outer anticorrosive layer.

Preferably, the reinforcing sleeve and the inner conveying pipe are both of steel pipe structures, and the outer isolation protective sleeve is of a PE pipe structure.

Compared with the prior art, the utility model has the beneficial effects that: this double-deck anticorrosive structure of petroleum pipeline adds externally and has established an outer isolation protective sleeve section of thick bamboo, can play the effect of protection to the anticorrosive structure of inside pipeline, reduces the contact of anticorrosive structure of pipeline and external environment, improves the protective action of anticorrosive structure of pipeline, effectively prolongs the life-span of anticorrosive structure of pipeline. This double-deck anticorrosive structure of petroleum pipeline has evenly set up the support fastening strip in outer isolation protective sleeve inboard, can make outer isolation protective sleeve fastening cover establish outside petroleum pipeline, supports the effect that the cavity that forms between the fastening strip can play the buffering simultaneously, alleviates external vibrations to the influence of inside petroleum pipeline, makes petroleum pipeline obtain the protection.

Drawings

FIG. 1 is a cross-sectional view of a double-layer corrosion protection structure of a petroleum pipeline according to the present invention;

FIG. 2 is an enlarged schematic view of the position A in FIG. 1 of a double-layer corrosion protection structure for a petroleum pipeline according to the present invention;

FIG. 3 is a side view of a double-layer corrosion protection structure for a petroleum pipeline according to the present invention.

In the figure: 1. petroleum pipeline, 2, flange joint seat, 3, outer isolation lag sleeve, 4, support fastening strip, 5, the outer anticorrosive coating of second, 6, reinforcement sleeve pipe, anticorrosive coating in 7, the second, 8, heat preservation, 9, first interior anticorrosive coating, 10, first outer anticorrosive coating, 11, interior conveyer pipe, 12, cushion chamber.

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.

Referring to fig. 1-3, the present invention provides a technical solution: a double-layer anticorrosion structure of a petroleum pipeline comprises the petroleum pipeline 1, an inner conveying pipe 11 is arranged on the petroleum pipeline 1, a first inner anticorrosion layer 9 is sprayed on the inner side of the inner conveying pipe 11, a first outer anticorrosion layer 10 is wound on the outer side of the inner conveying pipe 11, a reinforcing sleeve 6 is sleeved outside the inner conveying pipe 11, a second inner anticorrosion layer 7 is sprayed on the inner side of the reinforcing sleeve 6, a second outer anticorrosion layer 5 is wound on the outer side of the reinforcing sleeve 6, a heat insulation layer 8 is filled between the inner conveying pipe 11 and the reinforcing sleeve 6, the heat insulation layer 8 is made of existing heat insulation materials, the inner conveying pipe 11 can be subjected to heat insulation protection treatment through the heat insulation layer 8 so as to be convenient for conveying treatment of internal petroleum, flange connecting seats 2 are connected at two ends of the inner conveying pipe 11, an outer isolation protective sleeve 3 is sleeved outside the reinforcing sleeve 6, the outer isolation protective sleeve 3 is of a circular sleeve structure, and the outer isolation protective sleeve 3 is positioned between the flange connecting seats 2, the structure can lead the outer isolation protection sleeve 3 to carry out supporting and fixing treatment at two ends through the flange connecting seat 2, the outer isolation protection sleeve 3 adopts the existing pipe structure made of PE material, can play the role of anticorrosion and isolation, and can reduce the influence of the external environment on the anticorrosion structure of the inner pipeline, after the outer isolation protection sleeve 3 is sleeved outside the reinforcing sleeve 6, the flange connecting seat 2 and the inner conveying pipe 11 are welded and fixed, the petroleum pipeline 1 can be butted and fixed through the flange connecting seat 2, the inner side of the outer isolation protection sleeve 3 is evenly connected with the supporting fastening strips 4, the length of the supporting fastening strips 4 is equal to that of the outer isolation protection sleeve 3, and the buffer cavity 12 is arranged between the supporting fastening strips 4, the buffer cavity 12 of the structure can lead a certain space between the outer isolation protection sleeve 3 and the reinforcing sleeve 6 to carry out buffering treatment, when the petroleum pipeline 1 is vibrated, the influence of external vibration on the internal structure of the petroleum pipeline 1 can be reduced through the buffer cavity 12, so that the petroleum pipeline 1 is protected, one side of the supporting fastening strip 4, which is far away from the outer isolation protection sleeve 3, is of an arc-shaped structure, one side of the arc-shaped structure of the supporting fastening strip 4 is in contact connection with the second outer anti-corrosion layer 5, the structure ensures that the outer isolation protection sleeve 3 can be fastened and fixed relative to the reinforcing sleeve 6 through the supporting fastening strip 4, when the outer isolation protection sleeve 3 is sleeved outside the reinforcing sleeve 6, the friction influence on the second outer anti-corrosion layer 5 can be reduced through the arc-shaped structure of the supporting fastening strip 4, the reinforcing sleeve 6 and the inner conveying pipe 11 are both of steel pipe structures, the outer isolation protection sleeve 3 is of PE, the structural reinforcing sleeve 6 can play an external reinforcing role on the inner conveying pipe 11, and the inner conveying pipe 11 is used for conveying petroleum, outer isolation lag sleeve 3 can have anticorrosive performance through PE tubular product matter, carry out the outside cover of petroleum pipeline 1 through outer isolation lag sleeve 3 and establish the protection, can make petroleum pipeline 1 contact with external environment through outer isolation lag sleeve 3, effectual inside anticorrosive structure of messenger and external contact reduce, the barrier propterty of inside anticorrosive structure has been improved, thereby let the life of petroleum pipeline 1 can prolong, outer isolation lag sleeve 3 can with support 4 integrated into one piece of fastening strip simultaneously.

The working principle is as follows: when using this double-deck anticorrosion structure of petroleum pipeline, at first petroleum pipeline 1 carries out the transport processing of oil through interior conveyer pipe 11, connect fixed processing by flange joint seat 2 between the interior conveyer pipe 11, the inside transfer passage of interior conveyer pipe 11 carries out anticorrosive treatment by first interior anticorrosive coating 9, interior conveyer pipe 11 outside carries out anticorrosive treatment through around the first outer anticorrosive coating 10 of establishing, the oil of carrying in the interior conveyer pipe 11 of heat preservation 8 plays the effect of heat preservation protection, reinforcement sleeve 6 plays the effect of reinforcement protection to interior conveyer pipe 11, simultaneously interior conveyer pipe 11 inside and outside both sides carry out anticorrosive treatment by anticorrosive coating 7 in the second and the outer anticorrosive coating 5 of second respectively, when petroleum pipeline 1 outside receives the striking and produces vibrations, can carry out buffer processing through buffer chamber 12 between outer isolation lag barrel 3 and the reinforcement sleeve 6, fasten the department of support through supporting fastening strip 4 between outer isolation lag barrel 3 and the outer anticorrosive coating 5 of reinforcement sleeve 6's second In other words, the outer isolation protective sleeve 3 plays an external isolation role in an anticorrosion structure in the petroleum pipeline 1, and improves the anticorrosion performance of the petroleum pipeline 1, so that a series of work is completed.

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 various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a double-deck anticorrosive structure of petroleum pipeline, includes petroleum pipeline (1), its characterized in that: be equipped with interior conveyer pipe (11) on petroleum pipeline (1), and the inboard spraying of interior conveyer pipe (11) has first interior anticorrosive coating (9) to interior conveyer pipe (11) outside is around being equipped with first outer anticorrosive coating (10), interior conveyer pipe (11) overcoat is equipped with reinforcing sleeve (6), and reinforcing sleeve (6) inboard spraying has anticorrosive coating (7) in the second, and reinforcing sleeve (6) outside is around being equipped with outer anticorrosive coating (5) of second, it has heat preservation (8) to fill between interior conveyer pipe (11) and reinforcing sleeve (6), and interior conveyer pipe (11) both ends all are connected with flange joint seat (2), reinforcing sleeve (6) overcoat is equipped with outer isolation protective sleeve (3), and outer isolation protective sleeve (3) inboard evenly connected with support fastening strip (4).

2. A petroleum pipeline double-layer anticorrosion structure as recited in claim 1, wherein: the outer isolation protection sleeve (3) is of a circular sleeve structure, and the outer isolation protection sleeve (3) is located between the flange connecting seats (2).

3. A petroleum pipeline double-layer anticorrosion structure as recited in claim 1, wherein: the length of the supporting fastening strips (4) is equal to that of the outer isolation protective sleeve (3), and a buffer cavity (12) is arranged between the supporting fastening strips (4).

4. A petroleum pipeline double-layer anticorrosion structure as recited in claim 1, wherein: one side of the supporting fastening strip (4) far away from the outer isolation protective sleeve (3) is of an arc-shaped structure, and one side of the arc-shaped structure of the supporting fastening strip (4) is in contact connection with the second outer anticorrosive layer (5).

5. A petroleum pipeline double-layer anticorrosion structure as recited in claim 1, wherein: the reinforced sleeve (6) and the inner conveying pipe (11) are both of steel pipe structures, and the outer isolation protective sleeve (3) is of a PE pipe structure.