CN212107383U

CN212107383U - Bimetal metallurgy composite three-way pipe

Info

Publication number: CN212107383U
Application number: CN202020379243.1U
Authority: CN
Inventors: 何建忠
Original assignee: Shanghai Tian Yang Steel Tube Co ltd
Current assignee: Shanghai Tian Yang Steel Tube Co ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-12-08
Anticipated expiration: 2030-03-23

Abstract

The utility model discloses a bimetal metallurgy composite three-way pipe, which comprises a carbon steel base pipe formed by casting; the carbon steel base pipe is a three-way pipe structure consisting of a main pipe and branch pipes; an L-shaped reinforcing rib is arranged at the joint of the main pipe and the branch pipe of the carbon steel base pipe; the reinforcing ribs protrude from the inner surface of the carbon steel base pipe; a stainless steel inner layer is cladded on the surface of the carbon steel base pipe by laser; the surface of the stainless steel inner layer is provided with a ceramic layer. The utility model discloses to optimize the structure of compound stainless steel in the carbon steel with the single metal stainless steel structure that the cost is expensive originally, greatly reduced manufacturing cost, cast carbon steel body shaping is of high quality, and structural strength is high, has guaranteed threeway compressive capacity, and the stainless steel inlayer that attaches in is good with carbon steel body bonding strength, and the corrosion protection ability is compared with mechanical extrusion complex, has eliminated compound stress, non-deformable, the ceramic layer of cooperation simultaneously, further improve wear resistance and corrosion resistance, increase of service life.

Description

Bimetal metallurgy composite three-way pipe

Technical Field

The utility model relates to a compound tubular product field, in particular to bimetal metallurgy compound three-way pipe.

Background

In recent years, the demand and the use amount of energy sources for various industries in China are increasing day by day, and at present, fossil energy sources such as petroleum and natural gas are still used as main energy sources in China. As more petroleum resources are intensively distributed in remote areas and need to be conveyed to all over the country in various ways, the pipeline conveying is a main conveying way with the characteristics of high efficiency, low cost, energy conservation and environmental protection, and as shown by statistics, the total mileage of domestic oil and gas pipelines of medium and medium petroleum is more than 8 ten thousand kilometers and the total mileage of domestic crude oil long conveying pipelines is more than 2 ten thousand kilometers by the end of 2018 years. It can be seen that the demand of the petroleum industry in China for the tee joint is huge, most of the existing tee joints on the market are made of stainless steel materials with good corrosion resistance and high strength, the investment cost is high, and a lot of unnecessary resource waste is caused. At present, some bimetal composite pipes exist in the market, carbon steel with low cost and stainless steel are compounded, but mechanical extrusion compounding is adopted, so that the bonding strength is poor, the forming effect is not ideal, and meanwhile, the corrosion resistance is not ideal.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a bimetal metallurgy composite three-way pipe makes the carbon steel body through the cast mode, carries out laser vibration material disk manufacturing at carbon steel body internal surface again, forms the stainless steel inlayer, cooperates the ceramization layer, has solved the extrusion complex that current bimetal composite three-way pipe adopted mechanical type more, and it is poor to have bonding strength, and the shaping effect is unsatisfactory, the unsatisfactory problem of corrosion resistance simultaneously.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: a bimetal metallurgy composite three-way pipe comprises a carbon steel base pipe which is formed by casting; the carbon steel base pipe is a three-way pipe structure consisting of a main pipe and branch pipes; an L-shaped reinforcing rib is arranged at the joint of the main pipe and the branch pipe of the carbon steel base pipe; the reinforcing ribs protrude from the inner surface of the carbon steel base pipe; a stainless steel inner layer is cladded on the surface of the carbon steel base pipe by laser; and a ceramic layer is arranged on the surface of the stainless steel inner layer.

As a preferred scheme of the utility model, the height that the strengthening rib is protruding in carbon steel parent tube surface is 1-2 mm.

As a preferred scheme of the utility model, the thickness of the stainless steel inner layer is 2.5-5 mm.

As a preferable scheme of the present invention, the stainless steel inner layer is 304 stainless steel or 316 stainless steel.

As a preferred scheme of the utility model, the thickness of ceramic layer is 0.8-2.2 mm.

As an optimized scheme of the utility model, the strengthening rib is many, encircles the even interval of branch pipe inner wall of carbon steel parent tube sets up.

The utility model discloses following beneficial effect has: the utility model discloses to optimize the structure of compound stainless steel in the carbon steel with the single metal stainless steel structure that the cost is expensive originally, greatly reduced manufacturing cost, cast carbon steel body shaping is of high quality, and structural strength is high, has guaranteed threeway compressive capacity, and the stainless steel inlayer that attaches in is good with carbon steel body bonding strength, and the corrosion protection ability is compared with mechanical extrusion complex, has eliminated compound stress, non-deformable, the ceramic layer of cooperation simultaneously, further improve wear resistance and corrosion resistance, increase of service life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

The corresponding part names indicated by the numbers and letters in the drawings:

1. carbon steel pipe body 2, stainless steel inner layer 3, reinforcing rib

4. A ceramic layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

With reference to fig. 1, the utility model relates to a bimetal metallurgy composite three-way pipe, which is used for petroleum gas gathering and transportation pipelines, can be an equal-diameter tee joint and a reducing tee joint, and is connected with the gathering and transportation pipelines through flanges, welding, threads or buckling and pressing and other modes. The utility model discloses a carbon steel parent tube that the casting formed, mechanical strength is high, and the shaping is of high quality, the good reliability. The carbon steel base pipe is a three-way pipe structure consisting of a main pipe and branch pipes. An L-shaped reinforcing rib 3 is arranged at the joint of the main pipe and the branch pipe of the carbon steel base pipe; the reinforcing ribs 3 protrude from the inner surface of the carbon steel base pipe, and the height of the reinforcing ribs 3 protruding from the surface of the carbon steel base pipe is preferably 1-2 mm. The reinforcing rib 3 is mainly used for reducing the stress at the joint of the main pipe and the branch pipe in the casting process and improving the laser cladding bonding strength at the joint. And a stainless steel inner layer 2 is cladded on the surface of the carbon steel base pipe by laser. The stainless steel inner layer 2 can be made of 304 stainless steel or 316 stainless steel. Preferably, the thickness of the stainless steel inner layer 2 is 2.5-5 mm. And a ceramic layer 4 is arranged on the surface of the stainless steel inner layer 2. The thickness of the ceramic layer 4 is 0.8-2.2 mm. The ceramic layer 4 may be a metal ceramic layer of chromium carbide or chromium nitride having excellent wear resistance, or a silicon dioxide ceramic layer having excellent oxidation resistance.

Combine above embodiment, can see that the utility model has the advantages: the utility model discloses to optimize the structure of compound stainless steel in the carbon steel with the single metal stainless steel structure that the cost is expensive originally, greatly reduced manufacturing cost, 1 shaping of cast carbon steel body is of high quality, and structural strength is high, has guaranteed three-way compressive capacity, and interior stainless steel inlayer 2 that attaches is good with 1 joint strength of carbon steel body, and the corrosion protection ability is compared with mechanical extrusion complex, has eliminated compound stress, non-deformable, and the ceramic layer 4 of cooperation simultaneously further improves wear resistance and corrosion resisting property, increase of service life.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bimetal metallurgy composite three-way pipe is characterized by comprising a carbon steel base pipe which is formed by casting; the carbon steel base pipe is a three-way pipe structure consisting of a main pipe and branch pipes; an L-shaped reinforcing rib is arranged at the joint of the main pipe and the branch pipe of the carbon steel base pipe; the reinforcing ribs protrude from the inner surface of the carbon steel base pipe; a stainless steel inner layer is cladded on the surface of the carbon steel base pipe by laser; and a ceramic layer is arranged on the surface of the stainless steel inner layer.

2. The bimetal metallurgical composite tee of claim 1, wherein the height of the reinforcing ribs protruding from the surface of the carbon steel base pipe is 1-2 mm.

3. The bimetallic metallurgical composite tee of claim 2, wherein the inner layer of stainless steel has a thickness of 2.5-5 mm.

4. The bimetallic metallurgical composite tee of claim 3, wherein the inner stainless steel layer is 304 stainless steel or 316 stainless steel.

5. The bimetallic metallurgical composite tee of claim 1, wherein the thickness of the ceramifying layer is 0.8-2.2 mm.

6. The bimetal metallurgical composite three-way pipe according to claim 5, wherein the reinforcing ribs are arranged at intervals uniformly around the inner wall of the branch pipe of the carbon steel base pipe.