CN207145836U - A kind of heavy antisepsis elbow bend pipe - Google Patents

Abstract

The utility model discloses a heavy-duty anti-corrosion elbow elbow, which comprises a body, the inner and outer walls of the elbow elbow body are provided with heavy-duty anti-corrosion coatings, both ends of the elbow elbow body are inclined surfaces, and the inner and outer walls of the elbow elbow body The inner wall of the straight pipe section is inlaid with a stainless steel liner, and the outer end surface of the elbow body is provided with a stainless steel surfacing layer. The connection method of the utility model is used to connect the anti-corrosion pipes to each other to ensure the continuity of the anti-corrosion coating.

Description

A heavy-duty anti-corrosion elbow elbow

technical field

The utility model belongs to the technical field of pipe connection, in particular to a heavy-duty anti-corrosion elbow elbow.

Background technique

With the rapid development of my country's economy, the amount of anti-corrosion pipelines is increasing. Elbows (pipes) must be used during installation. The anti-corrosion coating is applied to the pipe, and the anti-corrosion coating must also be applied to the elbow and elbow. The joints of the elbow and elbow must also be treated with a joint-free process to achieve a good anti-corrosion effect. Otherwise, pipeline anticorrosion is meaningless. The traditional carbon steel elbow is not anti-corrosion, even if it is coated with anti-corrosion coating, it cannot be repaired internally. The price of stainless steel elbow is too high, especially the 6D elbow used for oil transportation. The utility model overcomes the above-mentioned shortcomings, and effectively solves the technical problems of the anti-corrosion coating and the internal joint of the elbow elbow with the smallest caliber of ∮48 and the curvature of 6D.

Utility model content

The technical problem to be solved by the utility model is to provide a heavy-duty anti-corrosion elbow elbow for the above-mentioned deficiencies in the prior art. The heavy-duty anti-corrosion elbow elbow is convenient for welding and ensures the continuity of the anti-corrosion pipeline anti-corrosion layer.

The utility model adopts the following technical solutions:

A heavy-duty anti-corrosion elbow elbow, including an elbow elbow body, the body includes an inner wall of the elbow and an outer wall of the elbow, and the inner wall of the elbow and the outer wall of the elbow are provided with a heavy-duty anti-corrosion coating. Straight pipe sections are arranged at both ends, each of the straight pipe sections is inlaid with a stainless steel liner, and a stainless steel surfacing layer is provided at the connection between each of the stainless steel liner and the end of the body.

Further, the outer end surfaces of the stainless steel liner are all exposed by 5-6 mm from the left and right end surfaces of the body.

Further, the stainless steel surfacing layers at both ends of the main body are arranged in a groove surface structure.

Further, the groove angle of the groove surface is 30-60°.

Further, the thickness of the stainless steel surfacing layer is 2-5 mm.

Further, the heavy-duty anti-corrosion coating covers 20-30mm of the inner end of the stainless steel liner.

Further, the body is made of carbon steel.

Compared with the prior art, the utility model has at least the following beneficial effects:

The utility model is a heavy anti-corrosion elbow elbow. The body is composed of the inner wall of the elbow and the outer wall of the elbow. The outer wall of the elbow is provided with a heavy-duty anti-corrosion coating. Both ends of the straight pipe section of the inner wall of the elbow are inlaid with stainless steel liners to prevent corrosion. When the anti-corrosion elbow is welded with the anti-corrosion steel pipe, the anti-corrosion layer is burned out. The outer end of the stainless steel liner exposed from the straight pipe sections at both ends of the body faces the end face of the body. The stainless steel surfacing layer is designed to prevent carbon The steel component is integrated into the weld, which can ensure the continuity of the anti-corrosion pipeline coating and facilitate the mutual welding with the anti-corrosion steel pipe, thereby ensuring the anti-corrosion performance of the stainless steel weld.

Further, the stainless steel lining pipe exposes 5-6 mm from the end face of the elbow, which is convenient for surfacing stainless steel surfacing.

Further, the stainless steel surfacing layer at both ends of the body is set as a groove surface to facilitate the mutual welding of the body and the anti-corrosion steel pipe. The heavy anti-corrosion coating covers the inner end of the stainless steel liner for 20-30mm to prevent the corrosive medium from penetrating into the inner wall of the elbow to corrode the carbon steel elbow.

Further, the thickness of the stainless steel surfacing layer is designed to be 2-5 mm to ensure that the molten pool near the inner wall does not contain carbon steel components when the anti-corrosion elbow is welded to the anti-corrosion steel pipe.

Further, the groove angle is set to 30-60° to facilitate mutual welding with the anti-corrosion steel pipe.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the connection of the utility model.

Among them: 102. Groove surface; 103. Stainless steel liner; 104. Stainless steel surfacing layer; 110. Elbow inner wall; 120. Elbow outer wall; 300. Heavy anti-corrosion coating.

Detailed ways

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner" and "outer" are based on the The orientation or positional relationship is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be interpreted as a reference to the utility model. limits.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Please refer to Fig. 1, the utility model discloses a heavy-duty anti-corrosion elbow elbow, including an elbow elbow body, the body includes an inner wall 110 of the elbow and an outer wall 120 of the elbow, and the inner wall 110 of the elbow and the outer wall of the elbow 120 are provided with heavy-duty anti-corrosion coating 300, the two ends of the body are provided with straight pipe sections, each of the straight pipe sections is inlaid with a stainless steel liner 103, each of the stainless steel liner 103 and the end of the body Stainless steel surfacing layer 104 is provided at all joints.

The stainless steel surfacing layers 104 at both ends of the main body are provided with a groove surface 102 structure, and the groove angle of the groove surface 102 is 30-60°.

The material of the body is carbon steel.

Please refer to Figure 2, the method steps for preparing heavy-duty elbow elbows are as follows:

Step 1. Insert two stainless steel liners with the same outer diameter into the straight pipe sections at the left and right ends of the main body, and the outer end surfaces of each stainless steel liner tube respectively expose the left and right end surfaces of the main body;

Wherein, the outer diameter of the stainless steel liner is equal to the inner diameter of the straight pipe section, and the outer end surfaces of the two stainless steel liner tubes both expose the left and right end surfaces of the body by 5-6mm;

Step 2, surfacing a layer of stainless steel surfacing from the exposed outer end of the stainless steel liner to the end face of the body, and welding the inner end of the stainless steel liner to the inner wall of the body;

Wherein, the thickness of the stainless steel surfacing layer is 2-5 mm.

Step 3, grinding the stainless steel surfacing layers at both ends into a groove surface structure;

Step 4. Then use a bendable one-time forming spray gun to coat a layer of heavy-duty anti-corrosion coating on the inner wall of the elbow and the outer wall of the elbow of the body.

Preferably, the heavy-duty anti-corrosion coating covers 20-30mm of the inner end of the stainless steel liner.

The heavy-duty anti-corrosion elbow elbow of the utility model sets the two ends of the body as groove surfaces, which facilitates the mutual welding between the body of the utility model and the anti-corrosion steel pipe. The heavy-duty anti-corrosion coating covers the inner end of the stainless steel liner for 20-30 mm to prevent the infiltration of corrosive media. The inner wall of the elbow corrodes the carbon steel elbow.

The flexible one-time forming spray gun technology can ensure the thickness and quality of the inner coating of the elbow. The purpose of welding the inner end of the stainless steel liner to the inner wall of the elbow is to prevent the stainless steel liner from shifting and destroying the anti-corrosion layer. The design of the stainless steel surfacing layer is to prevent the carbon steel components from melting into the weld and ensure the anti-corrosion performance of the stainless steel weld.

Adopting the connection method of the utility model to connect the anticorrosion pipelines can ensure the continuity of the anticorrosion coating.

The above content is only to illustrate the technical idea of the utility model, and cannot limit the protection scope of the utility model. Any changes made on the basis of the technical solution according to the technical idea proposed by the utility model all fall into the scope of the utility model. within the scope of protection of the claims.

Claims (7)

1. A heavy-duty anti-corrosion elbow elbow, characterized in that it includes an elbow elbow body, the body includes an inner wall of the elbow (110) and an outer wall of the elbow (120), and the inner wall of the elbow (110) and the elbow A heavy-duty anti-corrosion coating (300) is provided on the outer wall (120) of the head, straight pipe sections are provided at both ends of the body, each of the straight pipe sections is inlaid with a stainless steel liner (103), each of the A stainless steel surfacing layer (104) is provided at the connection between the stainless steel lining pipe (103) and the end of the body. 2. A heavy-duty anti-corrosion elbow elbow according to claim 1, characterized in that, the outer end surfaces of the stainless steel liner (103) are exposed by 5-6 mm from the left and right end surfaces of the main body. 3. A heavy-duty anti-corrosion elbow elbow according to claim 1, characterized in that, the stainless steel surfacing layers (104) at both ends of the body are all arranged in a groove surface (102) structure. 4. The heavy-duty anti-corrosion elbow elbow according to claim 3, characterized in that, the groove angle of the groove surface (102) is 30-60°. 5. The heavy-duty anti-corrosion elbow elbow according to claim 3, characterized in that, the thickness of the stainless steel surfacing layer (104) is 2-5 mm. 6. The heavy-duty anti-corrosion elbow elbow according to claim 1, characterized in that, the heavy-duty anti-corrosion coating (300) covers the inner end of the stainless steel lining pipe (103) by 20-30mm. 7. A heavy-duty anti-corrosion elbow elbow according to claim 1, wherein the body is made of carbon steel.