Thermal-insulation corrosion-resistant composite pipeline for petrochemical industry

Abstract

The utility model relates to the technical field of composite pipelines, in particular to a heat preservation and corrosion resistance composite pipeline for petrochemical engineering. The heat-preservation corrosion-resistant composite pipeline for petrochemical engineering comprises a heat-preservation layer, a pipeline body and a corrosion-resistant layer which are arranged from inside to outside. The pipeline body comprises a plurality of pipeline units which are arranged in the length direction of the pipeline body and can be spliced. The heat preservation and corrosion resistance composite pipeline for the petrochemical industry can achieve the heat preservation and corrosion resistance effects, the pipeline splicing design of an ingenious structure is adopted, and the heat preservation and corrosion resistance composite pipeline is easy and convenient to disassemble and assemble, convenient to overhaul, suitable for long-line material conveying and extremely good in leakproofness.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite pipeline technical field, specifically, relates to a heat preservation corrosion -resistant composite pipeline for petroleum chemical industry. BACKGROUND

[0002] In the field of petroleum chemical industry, pipeline is crucial for energy to be transported smoothly, safely and energy-efficiently. Especially oil pipeline, as one of the main equipment of petroleum storage and transportation industry, is the most important conveying equipment for crude oil and petroleum products; it is composed of oil pipe and its accessories, and according to the needs of process flow, it is equipped with corresponding oil pump unit, and is designed and installed into a complete pipeline system for completing oil loading and unloading and transferring task. Compared with railway and highway oil transportation which also belong to land transportation mode, pipeline oil transportation needs to have excellent corrosion resistance and heat preservation, greater carrying capacity, better airtightness and better safety factor. Especially if pipeline corrosion or pipeline joint leakage occurs during transportation, it will cause serious environmental pollution problems. SUMMARY

[0003] The utility model discloses a heat preservation corrosion -resistant composite pipeline for petroleum chemical industry, the heat preservation corrosion -resistant composite pipeline for petroleum chemical industry, not only can play excellent heat preservation and corrosion -resistant effect, and adopt the pipeline splicing design of ingenious structure, not only simple and convenient to disassemble and assemble, is convenient for overhauling, is applicable to long route material conveying, and the airtightness is very good.

[0004] In order to achieve the above purpose, the preferred solution adopted by the utility model is:

[0005] A heat preservation corrosion -resistant composite pipeline for petroleum chemical industry, comprising a heat preservation layer, a pipeline body and a corrosion -resistant layer arranged from inside to outside, the pipeline body comprises a plurality of splicable pipeline units arranged along the length direction of itself.

[0006] Further, in the preferred embodiment of the utility model, the pipeline unit has a first end and a second end arranged along the length direction of itself; the axial line direction of the pipeline unit is arranged as a preset direction; the inner wall of the first end is connected with a connecting section; one end of the connecting section is arranged in the pipeline unit, and the other end is arranged outside the pipeline unit; the first end and the connecting section are circular annular along the cross section perpendicular to the preset direction respectively; the inner diameter of the first end is greater than that of the connecting section; the inner wall of the second end is connected with a limiting protrusion; the limiting protrusion is arranged in the pipeline unit; the second end and the limiting protrusion are circular annular along the cross section perpendicular to the preset direction respectively; the inner diameter of the second end is greater than that of the limiting protrusion; one side of the port surface of the limiting protrusion towards the second end is arranged as a limiting surface, and when the adjacent two pipeline units are connected, the port surface of the connecting section away from the first end and the limiting surface form abutment.

[0007] Further, in the preferred embodiment of the utility model, the first sealing rubber strip is arranged on the port surface of the first end; the second sealing rubber strip is arranged on the limiting surface; the first limiting groove is concavely arranged on the second sealing rubber strip; when the two adjacent pipeline units are connected, the first sealing rubber strip is embedded in the first limiting groove.

[0008] Further, in the preferred embodiment of the utility model, the third sealing rubber strip is arranged on the port surface of the first end; the fourth sealing rubber strip is arranged on the port surface of the second end; the second limiting groove is concavely arranged on the fourth sealing rubber strip; when the two adjacent pipeline units are connected, the third sealing rubber strip is embedded in the second limiting groove.

[0009] Further, in the preferred embodiment of the utility model, the fifth sealing rubber strip is arranged on the inner wall between the limiting surface and the port surface of the second end; when the two adjacent pipeline units are connected, the fifth sealing rubber strip is extruded by the connecting section and the second end.

[0010] Further, in the preferred embodiment of the utility model, the first sealing rubber strip, the third sealing rubber strip and the fifth sealing rubber strip are all annular along the cross section perpendicular to the preset direction.

[0011] Further, in the preferred embodiment of the utility model, the outer walls of the first end and the second end are provided with flanges which can be connected to each other.

[0012] The petroleum chemical industry heat preservation corrosion-resistant composite pipeline has the advantages that:

[0013] The petroleum chemical industry heat preservation corrosion-resistant composite pipeline comprises a heat preservation layer, a pipeline body and a corrosion-resistant layer arranged from inside to outside; the pipeline body comprises a plurality of splicable pipeline units arranged along the length direction of the pipeline body.

[0014] (1) excellent corrosion resistance and heat preservation;

[0015] (2) the splicable pipeline units are adopted, the installation and dismounting operation is simple and convenient, long route transportation can be realized, and the pipeline units are convenient to overhaul and replace;

[0016] (3) the interface has multi-stage sealing, and has excellent sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those skilled in the art, other related drawings can be obtained without creative labor on the basis of the drawings.

[0018] Figure 1 Part structure schematic diagram of the heat preservation corrosion-resistant composite pipeline for petroleum chemical industry provided by the embodiments of the present application;

[0019] Figure 2 Part section schematic diagram of the heat preservation corrosion-resistant composite pipeline for petroleum chemical industry provided by the embodiments of the present application;

[0020] Figure 3 Part explosion section schematic diagram of the heat preservation corrosion-resistant composite pipeline for petroleum chemical industry provided by the embodiments of the present application;

[0021] Figure 4 Part section schematic diagram of the pipeline unit provided by the embodiments of the present application;

[0022] Icon: 10-heat preservation corrosion-resistant composite pipeline for petroleum chemical industry, 100-heat preservation layer, 200-pipeline body, 300-corrosion-resistant layer, 400-pipeline unit, 410-first end, 420-second end, 430-flange, 411-connection section, 421-limiting protrusion, 4211-limiting surface, 440-first sealing rubber strip, 450-second sealing rubber strip, 451-first limiting groove, 460-third sealing rubber strip, 470-fourth sealing rubber strip, 471-second limiting groove, 480-fifth sealing rubber strip. DETAILED DESCRIPTION

[0023] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and together with the general description, serve to explain the principles of the application.

[0024] The detailed description of the embodiments of the application provided in the following drawings is therefore not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0026] Embodiment 1

[0027] The following description is made in conjunction with the accompanying Figures 1-4 Further description is made to the utility model:

[0028] The utility model provides a kind of heat preservation corrosion-resistant composite pipeline 10 for petrochemical industry, please refer to Figures 1-4 The heat preservation corrosion-resistant composite pipeline 10 for petrochemical industry includes heat preservation layer 100, pipeline body 200 and corrosion-resistant layer 300 by inside to outside setting.In this embodiment, pipeline body 200 includes multiple splicable pipeline units 400 along the length direction of itself.

[0029] In this embodiment, pipeline unit 400 has first end 410 and second end 420 along the length direction of itself.The outer wall of first end 410 and second end 420 is provided with flange 430 that can be connected with each other.The axial line direction of pipeline unit 400 is set as preset direction.

[0030] Among them, the inner wall of first end 410 is connected with connecting section 411.One end of connecting section 411 is arranged in pipeline unit 400, and the other end is arranged outside pipeline unit 400.The cross section of first end 410 and connecting section 411 along the direction perpendicular to preset direction is circular ring shape respectively.The inner diameter of first end 410 is greater than the inner diameter of connecting section 411.

[0031] The inner wall of second end 420 is connected with limiting protrusion 421, and limiting protrusion 421 is arranged in pipeline unit 400, and the cross section of second end 420 and limiting protrusion 421 along the direction perpendicular to preset direction is circular ring shape respectively.The inner diameter of second end 420 is greater than the inner diameter of limiting protrusion 421.One side of the port surface of limiting protrusion 421 towards second end 420 is set as limiting surface 4211.

[0032] In this embodiment, the port surface of first end 410 is provided with first sealing rubber strip 440, and limiting surface 4211 is provided with second sealing rubber strip 450.Second sealing rubber strip 450 is recessed with first limiting groove 451, and when two adjacent pipeline units 400 are connected, first sealing rubber strip 440 is embedded in first limiting groove 451.The cross section of first sealing rubber strip 440 along the direction perpendicular to preset direction is circular ring shape.

[0033] In this embodiment, the port surface of first end 410 is provided with third sealing rubber strip 460, and the port surface of second end 420 is provided with fourth sealing rubber strip 470, and fourth sealing rubber strip 470 is recessed with second limiting groove 471, and when two adjacent pipeline units 400 are connected, third sealing rubber strip 460 is embedded in second limiting groove 471.The cross section of third sealing rubber strip 460 along the direction perpendicular to preset direction is circular ring shape.

[0034] In the embodiment, the inner wall of the second end 420 between the limiting surface 4211 and the port surface of the second end 420 is provided with the fifth sealing rubber strip 480, which is extruded by the connecting section 411 and the second end 420 when the two adjacent pipe units 400 are connected. The fifth sealing rubber strip 480 is annular along the cross section perpendicular to the preset direction.

[0035] The petroleum chemical industry heat-insulating corrosion-resistant composite pipe 10 provided by the embodiment is connected as follows: when the two adjacent pipe units 400 are connected, the connecting section 411 of one pipe unit 400 is embedded into the second end 420 of the other pipe unit, the first sealing rubber strip 440 is embedded into the first limiting groove 451, the port surface of the connecting section 411 abuts against the limiting protrusion 421, the third sealing rubber strip 460 is embedded into the second limiting groove 471, the port surface of the first end 410 abuts against the port surface of the second end 420, and the fifth sealing rubber strip abuts against the inner wall of the connecting section 411 and the second end 420.

[0036] In summary, the petroleum chemical industry heat-insulating corrosion-resistant composite pipe 10 provided by the embodiment not only has excellent heat-insulating and corrosion-resistant effects, but also has a pipe splicing design with a clever structure, which is simple and convenient to disassemble and assemble, is convenient for maintenance, is suitable for long-route material conveying, and has excellent airtightness.

[0037] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thermally insulated and corrosion-resistant composite pipe for petrochemical applications, characterized in that, The pipeline comprises a heat preservation layer, a pipeline body and a corrosion-resistant layer arranged from inside to outside; the pipeline body comprises a plurality of splicable pipeline units arranged along the length direction of the pipeline body; the pipeline unit has a first end and a second end arranged along the length direction of the pipeline unit; the axial line direction of the pipeline unit is arranged as a preset direction; the inner wall of the first end is connected with a connecting section; one end of the connecting section is arranged in the pipeline unit, and the other end is arranged outside the pipeline unit; the first end and the connecting section are respectively annular along the cross section perpendicular to the preset direction; the inner diameter of the first end is larger than that of the connecting section; the inner wall of the second end is connected with a limiting protrusion; the limiting protrusion is arranged in the pipeline unit; the second end and the limiting protrusion are respectively annular along the cross section perpendicular to the preset direction; the inner diameter of the second end is larger than that of the limiting protrusion; one side of the limiting protrusion facing the port surface of the second end is arranged as a limiting surface; when two adjacent pipeline units are connected, the port surface of the connecting section away from the first end abuts against the limiting surface; the port surface of the connecting section away from the first end is provided with a first sealing rubber strip; the limiting surface is provided with a second sealing rubber strip; the second sealing rubber strip is recessed with a first limiting groove; when two adjacent pipeline units are connected, the first sealing rubber strip is embedded in the first limiting groove.

2. The thermally and corrosion resistant composite pipe for petrochemical industry according to claim 1, characterized in that, the port surface of the first end is provided with a third sealing rubber strip; the port surface of the second end is provided with a fourth sealing rubber strip; the fourth sealing rubber strip is recessed with a second limiting groove; when two adjacent pipeline units are connected, the third sealing rubber strip is embedded in the second limiting groove.

3. The thermally and corrosion resistant composite pipe for petrochemical industry according to claim 2, characterized in that, the inner wall of the second end between the limiting surface and the port surface of the second end is provided with a fifth sealing rubber strip; when two adjacent pipeline units are connected, the fifth sealing rubber strip is extruded by the connecting section and the second end.

4. The thermally and corrosion resistant composite pipe for petrochemical industry according to claim 3, characterized in that, the first sealing rubber strip, the third sealing rubber strip and the fifth sealing rubber strip are all annular along the cross section perpendicular to the preset direction.

5. The thermally and corrosion resistant composite pipe for petrochemical industry according to claim 4, characterized in that, the outer walls of the first end and the second end are provided with flanges that can be connected with each other.

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