CN216201262U

CN216201262U - Multilayer composite pipeline flange packaging structure

Info

Publication number: CN216201262U
Application number: CN202122529009.XU
Authority: CN
Inventors: 刘海波; 何广东; 刘文成; 曾辉
Original assignee: Jiangsu Fengci New Material Technology Co ltd
Current assignee: Jiangsu Fengci New Material Technology Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-04-05
Anticipated expiration: 2031-10-20

Abstract

The utility model provides a multilayer composite pipeline flange packaging structure, which comprises a steel pipe with a ceramic lining layer, wherein the steel pipe is a thinning carbon steel pipe, a PP outer pipe is sleeved outside the steel pipe in a hot melting mode, the end part of the PP outer pipe is in threaded fit with a flange, the flange protrudes out of the end face of the steel pipe to form a packaging area, a packaging ring is arranged in the packaging area, and one end, far away from the end face of the steel pipe, of the packaging ring is flush with the flange.

Description

Multilayer composite pipeline flange packaging structure

Technical Field

The utility model relates to the technical field of pipeline packaging structures, in particular to a multilayer composite pipeline flange packaging structure.

Background

At present, the pipelines commonly used in the chemical industry comprise carbon steel pipelines (fluorine lining, plastic lining and the like), stainless steel pipelines, PP pipelines and the like, and the following defects commonly exist in the use of the pipelines:

the carbon steel pipeline has a wide application range, but the carbon steel pipeline has high cost, heavy weight and high field operation and maintenance cost; the stainless steel pipeline is simple to use, but the material cost is higher; the PP pipeline material has low cost, but the use environment is strictly limited.

The existing ceramic-lined carbon steel pipeline has the advantages of high corrosion resistance and impact resistance, heavy weight and high cost, is not convenient for field installation (particularly large-diameter pipelines), and is not beneficial to overall cost control.

A ceramic lining steel pipe with publication number 'CN 203488860U' in the prior art comprises a steel pipe body, wherein a ceramic lining is arranged on the inner wall of the steel pipe body, the ceramic lining is composed of a plurality of aluminum oxide ceramic plates, saw teeth are arranged on the periphery of each aluminum oxide ceramic plate, and adjacent aluminum oxide ceramic plates are meshed through the saw teeth. The ceramic lining is composed of a plurality of ceramic plates, and the structure of the ceramic lining composed of the original ceramic rings is replaced, so that the ceramic lining has wide application range and can be used in various special-shaped pipelines; in addition, the periphery of the ceramic plates is arranged to be in a sawtooth shape, and the adjacent aluminum oxide ceramic plates are meshed through the sawtooth, so that the abrasion between the gaps of the two adjacent ceramic plates can be reduced, and the service life of the steel pipe is greatly prolonged.

However, the ceramic lining steel pipe still has the general defects of the existing ceramic lining pipe in the using process: 1. the device adopts a composite pipeline form with carbon steel and ceramic linings, but the composite pipeline is heavy in weight, high in cost and difficult to install on site; 2. the device adopts a carbon steel shell, and is easy to corrode after being exposed in air for a long time in the future; 3. the ceramic lining pipeline in the device and the prior art is not tightly packaged, and phenomena such as corrosion leakage and the like easily occur at the later stage of the pipeline flange joint.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a multi-layer composite pipe flange package structure, so as to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a multilayer composite pipe flange packaging structure, is including the steel pipe that has the ceramic inner liner, the steel pipe is attenuate carbon steel pipe, the outer hot melt formula cover of steel pipe is equipped with the PP outer tube, PP outer tube end portion and flange screw-thread fit, the outstanding steel pipe terminal surface of flange forms the encapsulation district, be provided with the encapsulation ring in the encapsulation district, steel pipe terminal surface one end is kept away from to the encapsulation ring and the flange flushes.

Preferably, the end face of the steel pipe is flush with the end face of the PP outer pipe, and the arc-shaped surface of the packaging ring is fixedly installed on the inner wall of the flange through a sealant.

Preferably, the end face of the PP outer pipe is flush with the end face of the flange, and the arc-shaped surface of the packaging ring is fixedly installed on the inner wall of the PP outer pipe through a sealant.

Preferably, the steel pipe, the PP outer pipe and the flange end face are arranged in a progressive mode, the packaging ring is a hollow ring of a concentric circle with a steeply increased radius, and the arc surface of the packaging ring is fixedly installed on the flange and the inner wall of the PP outer pipe through a sealant respectively.

Preferably, an anti-corrosion isolating ring is further arranged between the end face of the steel pipe and the packaging ring.

Preferably, the flange is a PP flange.

Preferably, the packaging ring is a ceramic packaging ring or an alloy packaging ring.

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

1. the utility model adopts a pipeline form of three-layer composite of the PP outer pipe, the thinned carbon steel pipe and the ceramic lining, and the PP outer pipe and the steel pipe are tightly combined, thereby effectively reducing the overall quality and the production cost of the pipeline and having better improvement effect on the field assembly difficulty;

2. the PP outer pipe can also play a better role in supporting, resisting impact and corrosion on the whole steel pipe, and the service life of the steel pipe in the prior art is prolonged;

3. the three-layer composite pipeline structure of the utility model creates different packaging structures of the end surfaces of the pipeline, and the packaging ring is added in the process of installing the flange, thereby effectively ensuring the sealing property and the corrosion resistance of the flange connecting part of the composite pipeline and greatly improving the reliability of pipeline packaging.

The utility model adopts a pipeline form of three-layer composite of the PP outer pipe, the thinned carbon steel pipe and the ceramic lining, effectively reduces the overall quality and the production cost of the pipeline, prolongs the service life of the steel pipe in the prior art, and simultaneously, the three-layer composite pipeline structure makes different packaging structures of the end face of the pipeline, thereby greatly improving the reliability of pipeline packaging.

Drawings

FIG. 1 is a schematic view of the disassembly of the overall structure of the composite pipeline and its flange package according to the present invention;

FIG. 2 is a schematic view of a flush type packaging structure of the end face of a steel pipe and the end face of a PP outer pipe of the utility model;

FIG. 3 is a schematic view of a flush type packaging structure of an end face of a PP outer pipe and an end face of a flange according to the utility model;

FIG. 4 is a schematic view of the progressive type packaging structure of the end faces of the steel pipe, the PP outer pipe and the flange of the utility model;

FIG. 5 is an enlarged view of the area A of the present invention;

FIG. 6 is an enlarged view of the area B of the present invention;

fig. 7 is an enlarged structural diagram of the region C according to the present invention.

In the figure: 1 ceramic lining layer, 2 steel pipes, 3PP outer pipes, 4 flanges, 5 packaging areas, 6 packaging rings and 7 anticorrosion isolating rings.

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.

Example (b):

referring to fig. 1-7, the present invention provides a technical solution:

the first embodiment is as follows:

the utility model provides a multilayer composite pipe flange packaging structure, is including the steel pipe 2 that has ceramic inner liner 1, and steel pipe 2 is the attenuate carbon steel pipe, and 2 outer hot melt formula covers of steel pipe are equipped with PP

outer tube

3, and 3 tip of PP outer tube and 4 screw-thread fit of flange, 2 terminal surfaces of the outstanding steel pipe of flange 4 form encapsulation district 5, are provided with encapsulation ring 6 in the

encapsulation district

5, and 2 terminal surface one ends of steel pipe are kept away from to encapsulation ring 6 and flange 4 flushes.

In the embodiment, as the outer part of the steel pipe 2 is sleeved with the outer PP pipe 3 in a hot melting manner, under the condition of ensuring the pressure grade requirement of the pipeline, the steel pipe 2 can be selected from a thinned carbon steel pipe, compared with the pipeline form of the steel pipe and the ceramic lining in the prior art, the outer PP pipe outside the pipeline can provide certain structural strength, and simultaneously can provide certain impact resistance, support and corrosion resistance protection for the steel pipe 2, in addition, as the outer PP pipe 3 is sleeved outside the steel pipe 2, threads can be directly processed on the outer PP pipe 3 in the connection process with the flange 4, compared with the thread processing mode on the surface of the steel pipe 2 in the prior art, the risks of damage and the like of the ceramic lining layer 1 in the thread processing process are greatly reduced, meanwhile, as the flange 4 protrudes out of the end face of the steel pipe 2 to form the packaging area 5, the packaging ring 6 is arranged in the packaging area 5, and the packaging ring 6 is a ceramic packaging ring or an alloy packaging ring, thereby can effectively promote anticorrosive, the sealing capacity of pipeline port to play better guard action to the port, the encapsulation ring 6 of this scheme passes through the sealant to be fixed in encapsulated area 5, and the sealant is one of ceramic repair agent, binder or sealed glue, keeps away from 2 terminal surfaces one end of steel pipe through encapsulation ring 6 and flushes with flange 4, thereby guarantees that 4 butt joint in-process of both ends flange can closely cooperate.

Example two:

in this embodiment, 2 terminal surfaces of steel pipe flush with 3 terminal surfaces of PP outer tube, and 6 arcwall faces of encapsulation ring pass through sealant fixed mounting in 4 inner walls of flange, and this kind of sealing scheme can protect steel pipe 2, PP outer tube 3 and ceramic inner liner 1 simultaneously through setting up of sealing ring 6, guarantees the security of composite pipe in flange 4 connection process.

Example three:

in this embodiment, 3 terminal surfaces of PP outer tube and 4 terminal surfaces of flange flush the setting, and 6 arcwall faces of encapsulation ring pass through sealant fixed mounting in 3 inner walls of PP outer tube, and in this sealing scheme, sealing ring 6 can protect steel pipe 2 and ceramic inner liner 1.

Example four:

in this embodiment, steel pipe 2, the formula setting is advanced progressively to 4 terminal surfaces of PP outer tube 3 and flange, encapsulation ring 6 is the concentric circle fretwork ring of the formula that the radius sharply increases, 6 arcwall faces of encapsulation ring pass through sealant fixed mounting respectively at

flange

4 and 3 inner walls of PP outer tube, in this sealing scheme, sealing ring 6 can be simultaneously to steel pipe 2, PP outer tube 3 and ceramic inner liner 1 protect, and the protection cross-section is the notch cuttype, thereby sealed length of sealed glue has been prolonged, packaging structure's leakproofness has further been guaranteed.

Example five:

in this embodiment, still be provided with anticorrosive isolating ring 7 between steel pipe 2 terminal surface and the encapsulation ring 6, anticorrosive isolating ring 7 is the alloy ring or a kind of peek material ring, can further play the effect of anticorrosive isolation to steel pipe 1 and ceramic inner liner 1 through installing anticorrosive isolating ring 7 additional.

Example six:

in this embodiment, flange 4 is the PP flange, adopts PP flange connection, and flange 4 and PP outer tube 3 can improve the fragile problem of ceramic inside liner 1 that directly leads to the fact on steel pipe 2 processing screw thread on the one hand, and on the other hand PP flange cost has obvious reduction to carbon steel flange.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multilayer composite pipe flange packaging structure, includes steel pipe (2) that have ceramic inner liner (1), its characterized in that: steel pipe (2) are the attenuate carbon steel pipe, steel pipe (2) outer hot melt formula cover is equipped with PP outer tube (3), PP outer tube (3) tip and flange (4) screw-thread fit, flange (4) outstanding steel pipe (2) terminal surface forms encapsulation district (5), be provided with encapsulation ring (6) in encapsulation district (5), steel pipe (2) terminal surface one end is kept away from in encapsulation ring (6) flushes with flange (4).

2. The multilayer composite pipe flange package structure of claim 1, wherein: the end face of the steel pipe (2) is flush with the end face of the PP outer pipe (3), and the arc-shaped face of the packaging ring (6) is fixedly mounted on the inner wall of the flange (4) through sealant.

3. The multilayer composite pipe flange package structure of claim 1, wherein: the end face of the PP outer pipe (3) is flush with the end face of the flange (4), and the arc-shaped face of the packaging ring (6) is fixedly installed on the inner wall of the PP outer pipe (3) through sealant.

4. The multilayer composite pipe flange package structure of claim 1, wherein: the end faces of the steel pipe (2), the PP outer pipe (3) and the flange (4) are arranged in a progressive mode, the packaging ring (6) is a hollow ring of a concentric circle with a steeply increased radius, and the arc-shaped face of the packaging ring (6) is fixedly installed on the inner walls of the flange (4) and the PP outer pipe (3) through sealant respectively.

5. The flange package structure of claim 2, 3 or 4, wherein: and an anti-corrosion isolating ring (7) is also arranged between the end surface of the steel pipe (2) and the packaging ring (6).

6. The multi-layer composite pipe flange package structure of claim 5, wherein: the flange (4) is a PP flange.

7. The multi-layer composite pipe flange package structure of claim 6, wherein: the packaging ring (6) is a ceramic packaging ring or an alloy packaging ring.