CN110985780B

CN110985780B - Petrochemical industry pipeline

Info

Publication number: CN110985780B
Application number: CN201911343406.9A
Authority: CN
Inventors: 王俊玉; 刘振; 夏孝清; 郑豪
Original assignee: Dongying Weilian Chemical Co ltd
Current assignee: Dongying Weilian Chemical Co.,Ltd.
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2021-11-09
Anticipated expiration: 2039-12-24
Also published as: CN110985780A

Abstract

The invention relates to the field of petroleum transportation, in particular to a petrochemical engineering conveying pipeline which comprises a first unit pipe and a second unit pipe, wherein a first triangular protective shell and a second triangular protective shell are respectively arranged outside the first unit pipe and the second unit pipe; the first unit pipe and the second unit pipe are connected with each other through a first right flange plate, a second left flange plate and a fixing bolt.

Description

Petrochemical industry pipeline

Technical Field

The invention relates to the field of petroleum transportation, in particular to a petrochemical engineering conveying pipeline.

Background

Petroleum is one of the main objects of geological exploration, is a viscous dark brown liquid called industrial blood, and is stored in the upper part of the crust; the main component is a mixture of various alkanes, cyclanes and aromatics; the oil formation mechanism of petroleum has two theories of biological deposition and oil change and petrochemical oil, the former is widely accepted, and the petroleum is formed by the long evolution of organisms in ancient oceans or lakes, belongs to biological deposition and oil change and cannot be regenerated; the latter considers that petroleum is generated by carbon in the earth crust, is unrelated to organisms and can be regenerated; the properties of petroleum vary with the production area, the density is 0.8-1.0g/cm3, the viscosity range is very wide, the difference of the freezing point is very large, the boiling point range is from normal temperature to more than 500 ℃, the petroleum can be dissolved in various organic solvents, is insoluble in water, but can form emulsion with water; however, the composition and appearance of oil from different fields can be very different; petroleum is mainly used as fuel oil and gasoline, which in 2012 constitute one of the most important secondary energy sources in the world; petroleum is also a raw material for many chemical industry products such as solvents, fertilizers, pesticides, plastics, and the like; the world ocean area is 3.6 hundred million square kilometers, which is about 2.4 times of the land area; the continental shelf and the continental slope are about 5500 ten thousand square kilometers, which is equivalent to the sum of the areas of land sedimentary basins; 1/4% of the oil resources and 45% of the final recoverable reserves have been ascertained on earth and buried on the seafloor; the center of gravity of the exploration reserves of the world petroleum is gradually changed from land to sea.

The exploitation of ocean oil needs to lay the oil pipeline at the seabed to carry out the oil transportation, different from land, the various circumstances that submarine oil pipeline need bear huge water pressure and adverse circumstances brought, at present in the aspect of the marine oil exploitation, it is huge to submarine pipeline's maintenance and maintenance cost annually, and when the pipe connection, the underwater operation time overlength, so need design a compressive capacity can adapt to submarine adverse circumstances and connect convenient oil transportation pipeline, and when using for a long time, oil pipeline is because of artificial maintenance installation reason, or special reasons such as natural disasters, make flange joint easily receive not hard up because of external impact force, and then normal oil transportation work, for this reason, propose a petrochemical industry pipeline to solve above-mentioned problem.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a petrochemical engineering conveying pipeline.

The technical scheme adopted by the invention for solving the technical problems is as follows: a petrochemical industry conveying pipeline comprises a first unit pipe and a second unit pipe, wherein a first triangular protective shell and a second triangular protective shell are respectively arranged outside the first unit pipe and the second unit pipe, a first port pipe is fixedly connected to the left side and the right side of the first unit pipe, a first right flange is fixedly connected to one side, close to the second unit pipe, of the first port pipe, a first left flange is fixedly connected to one side, far away from the second unit pipe, of the first port pipe, a second port pipe is fixedly connected to the left side and the right side of the second unit pipe, a second left flange is fixedly connected to one side, close to the first unit pipe, of the second port pipe, a second right flange is fixedly connected to one side, far away from the first unit pipe, of the second port pipe, the first right flange and the second left flange are fixedly connected through fixing bolts, and a sealing gasket ring for increasing the sealing performance is arranged at the connecting part between the first right flange and the second left flange, the inside equal fixedly connected with buffer tube of first unit pipe and second unit pipe, the inside of buffer tube is equipped with defeated oil pipe.

Specifically, the left and right sides of first triangle protective case is fixedly connected with first left tray and first right tray respectively, the left and right sides of second triangle protective case is fixedly connected with second left tray and second right tray respectively, the welding has the protective groove between first right tray and the second left tray, the welding has the backplate in the bottom of protective groove.

Specifically, the left and right sides of guard slot and backplate all is equipped with the sealed triangle packing ring that is used for increasing the leakproofness with the connecting portion of first triangle protecting crust and second triangle protecting crust.

Specifically, reinforcing ribs for increasing strength are fixedly connected in three convex angle shells of the first triangular protective shell and the second triangular protective shell.

Specifically, the buffer tube comprises an outer tube and an inner tube, rubber is filled between the outer tube and the inner tube, and a plurality of triangular pore channels which are parallel to each other are formed in the body of the rubber layer.

Specifically, defeated oil pipe is including being located outmost concrete weight layer and being located the third steel pipe of inlayer, the first steel pipe of inboard fixedly connected with on concrete weight layer, the inboard fixedly connected with anticorrosive insulation layer of first steel pipe, the inboard fixedly connected with second steel pipe of anticorrosive insulation layer, it has the polyurethane foam layer to fill between second steel pipe and the third steel pipe.

Specifically, the anticorrosion insulating layer is a tubular layer structure made of a mixture of epoxy coal tar pitch and epoxy powder.

Specifically, the inside of first left ring flange begins fluted one, recess two has been seted up to one side of recess one, the inside of recess two is fixed and is provided with metal spring, the fixed movable muscle piece that is provided with of one end of metal spring, the inboard of movable muscle piece is provided with the sealing washer, the inboard of sealing washer is provided with first port pipe.

The sealing ring is made of rubber, and the inner structure and the model of the first left flange plate are all consistent with those of the second left flange plate.

The invention has the beneficial effects that:

(1) according to the petrochemical engineering conveying pipeline, the first unit pipe and the second unit pipe are connected with each other through the first right flange, the second left flange and the fixing bolt, the protective groove and the protective plate are welded on the connecting portion after connection is completed to protect the flange of the connecting portion, petroleum leakage caused by long-term seawater corrosion is avoided, the connection mode is simple to operate, connection efficiency is greatly improved, and underwater operation time during connection is shortened.

(2) According to the petrochemical engineering conveying pipeline, the first triangular protective shell and the second triangular protective shell are arranged on the outermost layers of the first unit pipe and the second unit pipe, the compression resistance is improved by utilizing the stability of the triangular structure, a layer of buffer pipe is arranged between the first triangular protective shell and the second triangular protective shell and the oil conveying pipe, the compression resistance of the oil conveying pipe is further improved, the service life of the oil conveying pipe can be greatly prolonged by the aid of the anticorrosion insulating layer and the polyurethane foam layer in the oil conveying pipe, the maintenance period can be shortened, and the cost is reduced.

(3) When the petrochemical engineering conveying pipeline is used for a long time, due to the fact that the oil conveying pipeline is manually maintained and installed or due to special reasons such as natural disasters, the first left flange and the second left flange are prone to being loosened or damaged by external impact force, connection between the first left flange and the second left flange is unstable, normal oil conveying is affected, when the external impact force is received, the impact force is reduced under the action of the metal spring through the first port pipe and the second port pipe, the purpose of buffering protection is achieved, and the sealing ring made of rubber can achieve a good sealing effect.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a first unit pipe structure of a petrochemical transportation pipeline provided by the invention;

FIG. 2 is a schematic view of a second unit pipe structure of a petrochemical transportation pipeline provided by the invention;

FIG. 3 is a schematic view of the connection between a first unit pipe and a second unit pipe of a petrochemical transportation pipeline according to the present invention;

FIG. 4 is a right side view of a first unit pipe of a petrochemical transportation pipeline according to the present invention;

FIG. 5 is a schematic view of the internal structure of part A of FIG. 3 of a petrochemical transportation pipeline according to the present invention;

FIG. 6 is a sectional view of the structure of the portion B-B of the petrochemical transportation pipeline shown in FIG. 3 according to the present invention;

fig. 7 is a cross-sectional view of the first left flange of the petrochemical transportation pipeline provided by the invention.

In the figure: 1. a first unit pipe; 11. a first triangular protective shell; 12. a first left support block; 13. a first right support block; 14. a first port tube; 15. a first left flange; 151. a first groove; 152. a second groove; 153. a metal spring; 154. a movable rib sheet; 155. a seal ring; 16. a first right flange; 2. a second unit pipe; 21. a second triangular protective shell; 22. a second left support block; 23. a second right support block; 24. a second port tube; 25. a second left flange; 26. a second right flange; 3. fixing the bolt; 4. a sealing circular gasket; 5. sealing a triangular gasket; 6. protecting the groove; 7. a guard plate; 8. reinforcing ribs; 9. a buffer tube; 91. an outer tube; 92. an inner tube; 93. a rubber layer; 94. a triangular pore passage; 10. an oil delivery pipe; 101. a concrete weight layer; 102. a first steel pipe; 103. an anticorrosive insulating layer; 104. a second steel pipe; 105. a polyurethane foam layer; 106. and a third steel pipe.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the petrochemical transportation pipeline according to the present invention includes a first unit pipe 1 and a second unit pipe 2, wherein a first triangular protective shell 11 and a second triangular protective shell 21 are respectively disposed outside the first unit pipe 1 and the second unit pipe 2, a first port pipe 14 is fixedly connected to both left and right sides of the first unit pipe 1, a first right flange 16 is fixedly connected to one side of the first port pipe 14 close to the second unit pipe 2, a first left flange 15 is fixedly connected to one side of the first port pipe 14 far from the second unit pipe 2, a second port pipe 24 is fixedly connected to both left and right sides of the second unit pipe 2, a second left flange 25 is fixedly connected to one side of the second port pipe 24 close to the first unit pipe 1, a second right flange 26 is fixedly connected to one side of the second port pipe 24 far from the first unit pipe 1, through 3 fixed connection of fixing bolt between first right ring flange 16 and the left ring flange 25 of second, and the connecting portion between first right ring flange 16 and the left ring flange 25 of second are equipped with the sealed circular gasket 4 that is used for increasing the leakproofness, the equal fixedly connected with buffer tube 9 in inside of first unit pipe 1 and second unit pipe 2, the inside of buffer tube 9 is equipped with defeated oil pipe 10.

Specifically, the left and right sides of first triangle protective case 11 is fixedly connected with first left tray 12 and first right tray 13 respectively, the left and right sides of second triangle protective case 21 is fixedly connected with second left tray 22 and second right tray 23 respectively, the welding has the protective groove 6 between first right tray 13 and the second left tray 22, the welding of the bottom of protective groove 6 has backplate 7, and first left tray 12 and first right tray 13 are the triangle-shaped structure, conveniently when carrying out welding operation with protective groove 6 and backplate 7 phase-match.

Specifically, the left and right sides of the guard groove 6 and the guard plate 7 and the connecting portions of the first triangular guard shell 11 and the second triangular guard shell 21 are provided with sealing triangular gaskets 5 for increasing the sealing performance, and the sealing triangular gaskets 5 increase the sealing performance to avoid petroleum leakage in transportation.

Specifically, equal fixedly connected with is used for the strengthening rib 8 of gaining in intensity in the three salient angle casings of first triangle protective housing 11 and second triangle protective housing 21, and the setting of strengthening rib 8 can further increase the intensity of first triangle protective housing 11 and second triangle protective housing 21, avoids submarine water impact to cause the pipeline rupture.

Specifically, buffer tube 9 includes outer tube 91 and inner tube 92, it has rubber to fill between outer tube 91 and the inner tube 92, set up a plurality of triangle pore canals 94 that are parallel to each other in the body of rubber layer 93, rubber layer 93 and inside triangle pore canal 94 play the effect of buffering, can protect defeated oil pipe 10 when first triangle protective housing 11 and second triangle protective housing 21 take place to warp.

Specifically, defeated oil pipe 10 is including being located outermost concrete counterweight layer 101 and being located innermost third steel pipe 106, the first steel pipe 102 of inboard fixedly connected with of concrete counterweight layer 101, the inboard fixedly connected with anticorrosive insulating layer 103 of first steel pipe 102, the inboard fixedly connected with second steel pipe 104 of anticorrosive insulating layer 103, it has polyurethane foam layer 105 to fill between second steel pipe 104 and the third steel pipe 106, and anticorrosive insulating layer 103 and polyurethane foam layer 105 can greatly increased defeated oil pipe 10's life, can reduce the cycle of maintenance and maintenance.

Specifically, the anticorrosion insulating layer 103 is a tubular layer structure made of a mixture of epoxy coal tar pitch and epoxy powder, and the combination of the epoxy coal tar pitch and the epoxy powder can increase the anticorrosion capability of the pipeline.

Specifically, first left ring flange 15's inside begins to have a recess 151, recess two 152 are seted up to one side of recess 151, the fixed metal spring 153 that is provided with in inside of recess two 152, the fixed movable muscle piece 154 that is provided with of one end of metal spring 153, the inboard of movable muscle piece 154 is provided with sealing washer 155, the inboard of sealing washer 155 is provided with first port pipe 14, the impartial contained angle of metal spring 153 and movable muscle piece 154 is provided with threely, and the activity of movable muscle piece 154 sets up the inside with recess 151, sealing washer 155 forms for the preparation of rubber material, first left ring flange 15 is unanimous with second left ring flange 25 inner structure and model. When the first port pipe 14 and the second port pipe 24 are connected with the second left flange plate 25 through the first left flange plate 15, the outside is fixedly connected with the fixing bolt 3, the inside can play a buffering role through the arrangement of the metal spring 153 and the movable rib piece 154, and the sealing ring 155 made of rubber can play a better sealing effect.

When the pipeline is used, a proper number of unit pipes are selected and connected through the left flange plate and the right flange plate, after each unit pipe is connected, the connecting part is sealed and protected by the arc groove and the guard plate 7 welded on the connecting part, the outermost triangular guard shell of each unit pipe is in a regular triangular structure, compared with a circular pipeline, the triangular guard shell enables the conveying pipeline to bear larger pressure on the seabed, the buffer pipe 9 plays a role in protecting and buffering between the triangular guard shell and the oil conveying pipeline 10, if the triangular guard shell is slightly deformed, the buffer pipe 9 can avoid the deformation from influencing the oil conveying pipeline 10, the concrete counterweight layer 101 on the oil conveying pipeline 10 can increase the quality of the pipeline, the anti-corrosion insulating layer 103 and the polyurethane foam layer 105 can increase the wear-resistant and heat-insulating properties of the pipeline, meanwhile, when the pipeline is used for a long time, the oil conveying pipeline is subjected to artificial maintenance and installation reasons, or natural disasters and other special reasons, make first left ring flange 15 and second left ring flange 25 receive external impact force to receive the damage easily, lead to connecting unstablely between the two, influence normal oil transportation, mainly be first port pipe 14 and second port pipe 24 when being connected through first left ring flange 15 and second left ring flange 25, the outside is through fixing bolt 3 fixed connection, inside can play a cushioning effect through setting up metal spring 153 and activity muscle piece 154, when receiving external impact force, first port pipe 14 and second port pipe 24 can reduce the impact force under metal spring 153's effect, play the purpose of buffer protection.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a petrochemical industry pipeline, includes first unit pipe (1) and second unit pipe (2), its characterized in that: the outer parts of the first unit pipe (1) and the second unit pipe (2) are respectively provided with a first triangular protective shell (11) and a second triangular protective shell (21), the left side and the right side of the first unit pipe (1) are fixedly connected with a first port pipe (14), one side of the first port pipe (14) close to the second unit pipe (2) is fixedly connected with a first right flange (16), one side of the first port pipe (14) far away from the second unit pipe (2) is fixedly connected with a first left flange (15), the left side and the right side of the second unit pipe (2) are fixedly connected with a second port pipe (24), one side of the second port pipe (24) close to the first unit pipe (1) is fixedly connected with a second left flange (25), one side of the second port pipe (24) far away from the first unit pipe (1) is fixedly connected with a second right flange (26), the first right flange plate (16) is fixedly connected with the second left flange plate (25) through a fixing bolt (3), a sealing circular gasket (4) for increasing the sealing performance is arranged at the connecting part between the first right flange plate (16) and the second left flange plate (25), a buffer tube (9) is fixedly connected inside each of the first unit tube (1) and the second unit tube (2), and an oil conveying pipe (10) is arranged inside each buffer tube (9);

the inside of first left ring flange (15) begins fluted (151), one side of recess one (151) is seted up fluted two (152), the inside of recess two (152) is fixed and is provided with metal spring (153), the fixed movable muscle piece (154) that is provided with of one end of metal spring (153), the inboard of movable muscle piece (154) is provided with sealing washer (155), the inboard of sealing washer (155) is provided with first port pipe (14).

2. The petrochemical transportation pipeline according to claim 1, wherein: the left and right sides of first triangle protective case (11) is fixedly connected with first left tray (12) and first right tray (13) respectively, the left and right sides of second triangle protective case (21) is fixedly connected with second left tray (22) and second right tray (23) respectively, the welding has between first right tray (13) and second left tray (22) protects groove (6), the welding of the bottom in protected groove (6) has backplate (7).

3. The petrochemical transportation pipeline according to claim 2, wherein: and sealing triangular gaskets (5) for increasing the sealing property are arranged on the left side and the right side of the protective groove (6) and the protective plate (7) and the connecting parts of the first triangular protective shell (11) and the second triangular protective shell (21).

4. The petrochemical transportation pipeline according to claim 1, wherein: and reinforcing ribs (8) for increasing strength are fixedly connected in three convex angle shells of the first triangular protective shell (11) and the second triangular protective shell (21).

5. The petrochemical transportation pipeline according to claim 1, wherein: the buffer tube (9) comprises an outer tube (91) and an inner tube (92), rubber is filled between the outer tube (91) and the inner tube (92), and a plurality of triangular pore channels (94) which are parallel to each other are formed in the body of the rubber layer (93).

6. The petrochemical transportation pipeline according to claim 1, wherein: defeated oil pipe (10) are including being located outmost concrete weight layer (101) and being located third steel pipe (106) of inlayer, the first steel pipe (102) of inboard fixedly connected with of concrete weight layer (101), the inboard fixedly connected with anticorrosive insulating layer (103) of first steel pipe (102), the inboard fixedly connected with second steel pipe (104) of anticorrosive insulating layer (103), it has polyurethane foam layer (105) to fill between second steel pipe (104) and third steel pipe (106).

7. The petrochemical transportation pipeline according to claim 6, wherein: the anticorrosion insulating layer (103) is a tubular layer structure made of a mixture of epoxy coal tar pitch and epoxy powder.

8. The petrochemical transportation pipeline according to claim 1, wherein: the equant included angle of metal spring (153) and activity muscle piece (154) is provided with threely, and activity muscle piece (154) activity sets up the inside with recess (151), sealing washer (155) are the preparation of rubber material and form, first left ring flange (15) and second left ring flange (25) inner structure and model are all unanimous.