CN210661701U

CN210661701U - Bimetal composite wear-resistant pipe

Info

Publication number: CN210661701U
Application number: CN201921811926.3U
Authority: CN
Inventors: 乐家亮
Original assignee: Jiangsu Yangyuan Metal Manufacturing Co Ltd
Current assignee: Jiangsu Yangyuan Metal Manufacturing Co Ltd
Priority date: 2019-10-26
Filing date: 2019-10-26
Publication date: 2020-06-02
Anticipated expiration: 2029-10-26

Abstract

The utility model discloses a compound wear-resisting pipe of bimetal relates to the pipeline field, including a pipe body, the body is the wear-resisting straight tube of bimetal, the wear-resisting elbow of bimetal or the wear-resisting tee bend of bimetal, the body comprises parent tube and interior bushing pipe, the outer wall of interior bushing pipe and the inner wall fixed connection of parent tube, interior bushing pipe is made by superstrong wear-resisting alloy material, and it is high chromium wear-resisting alloy material. The utility model discloses an outer wall adopts the steel pipe, and the inside lining adopts high chromium wear-resisting alloy material, and both form better metallurgical combination, had both had high alloy material's wear-resisting corrosion resisting characteristic, had very high mechanical strength and shock resistance again, because intraductal, outer coefficient of thermal expansion is the same, to the operating mode occasion that has high drastic change and frequent change, the inlayer can not appear cracked, the phenomenon pipe-line system resistance that takes place early failure is little, the appearance is pleasing to the eye.

Description

Bimetal composite wear-resistant pipe

Technical Field

The utility model relates to the field of pipelines, in particular to compound wear-resisting pipe of bimetal.

Background

The pipeline is an important structure for mineral material conveying, and is widely applied to a powder particle conveying system, a water conservancy slag conveying system and slurry conveying with larger particle size of a thermal power plant.

The existing pipeline has the following disadvantages: firstly, the wear resistance and corrosion resistance of the pipeline are poor, secondly, the mechanical strength and impact resistance of the pipeline are poor, and thirdly, the pipeline system resistance is large when the pipeline fails early on in the working condition occasions with rapid and frequent changes.

Therefore, it is necessary to invent a bimetal composite wear-resistant pipe to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bimetal composite wear-resisting pipe to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bimetal composite wear-resisting pipe, includes the body, the body is bimetal wear-resisting straight tube, bimetal wear-resisting elbow or bimetal wear-resisting tee bend, the body comprises base tube and interior bushing pipe, the outer wall of interior bushing pipe and the inner wall fixed connection of base tube, interior bushing pipe is made by superstrong wear-resisting alloy material, and it is high chromium wear-resisting alloy material.

Optionally, the base pipe is a steel pipe, and is made of 20 steel or Q235;

the hardness of the lining pipe is more than HRC 55.

Optionally, the high chromium wear resistant alloy material comprises 16Mn, 40Cr, high chromium cast iron Cr and Cr28 series.

Optionally, the high-chromium wear-resistant alloy material structure contains M7C3 type hard carbide, and the structure of the Ka type carbide is rod-shaped.

Optionally, the liner tube has a coefficient of thermal expansion of (11.65-13.75) x 106(mm/mm ℃);

the base pipe and the lining pipe have the same thermal expansion coefficient.

Optionally, the both ends of body are equal fixed mounting to have the joint, connect for flange express delivery connects.

Optionally, the included angle of the bimetal wear-resistant elbow is not less than 30 degrees.

The utility model discloses a technological effect and advantage:

1. the utility model discloses an outer wall adopts the steel pipe, and the inside lining adopts high chromium wear-resisting alloy material, and both form better metallurgical combination, have both had high alloy material's wear-resisting corrosion resisting characteristic, have very high mechanical strength and shock resistance again.

2. The utility model discloses because intraductal, outer thermal expansion coefficient is the same, to the operating mode occasion that has high drastic change and frequent change, the inlayer can not appear cracked, the phenomenon pipe-line system resistance that takes place early inefficacy is little, the appearance is pleasing to the eye, the body can adopt flange express delivery to connect or direct welded mode to install, because the impact resistance of body is high, can strike at will when the local stifled pipe takes place in the pipeline water conservancy diversion, and the arbitrary cutting is unloaded and is traded, is installed and is overhauld very conveniently.

Drawings

Fig. 1 is a schematic view of the structure of the bimetal wear-resistant straight pipe without the flange.

Fig. 2 is a schematic structural view of the flanged bimetallic wear-resistant straight pipe of the present invention.

Fig. 3 is a structural schematic view of the double-metal wear-resistant elbow without the flange.

Fig. 4 is a structural schematic view of the flanged bimetallic wear-resistant elbow of the present invention.

Fig. 5 is a schematic view of the structure of the bimetal wear-resistant tee without a flange.

FIG. 6 is a schematic view of the structure of the flanged bimetallic wear-resistant tee joint of the present invention

In the figure: a pipe body 1, a base pipe 101, a lining pipe 102 and a joint 2.

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 work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a bimetal composite wear-resistant pipe as shown in figures 1-6, including body 1, body 1 is bimetal wear-resistant straight tube, bimetal wear-resistant elbow or bimetal wear-resistant tee bend, body 1 comprises base tube 101 and interior bushing pipe 102, the outer wall of interior bushing pipe 102 and the inner wall fixed connection of base tube 101, base tube 101 adopts the steel pipe, its material is 20 steel or Q235, interior bushing pipe 102 is made by superstrong wear-resistant alloy material, it is high chromium wear-resistant alloy material, high chromium wear-resistant alloy material includes 16Mn, 40Cr, high chromium cast iron Cr and Cr28 series, contain M7C3 type carbide in the high chromium wear-resistant alloy material tissue, and the structure of Ka type carbide is the bar-shaped, thereby make body 1 have higher toughness and corrosion resistance, the hardness of interior bushing pipe 102 is more than HRC55, therefore wear resistance is good, the coefficient of thermal expansion of interior bushing pipe 102 is (11.65-13.75) x 106 (mm/mm. DEG C), the base pipe 101 is the same with interior bushing pipe 102's coefficient of thermal expansion, because intraductal, outer coefficient of thermal expansion is the same, to the operating mode occasion that has high abrupt change and frequent change, the inlayer is cracked can not appear, the phenomenon pipe-line system resistance that takes place early failure is little, the equal fixed mounting in both ends of body 1 has joint 2, connects 2 and connects for flange express delivery and connect, both can adopt the mode installation that the flange express delivery connects, can also directly weld, bimetal wear-resisting elbow contained angle is not less than 30 degrees.

The utility model discloses the theory of operation:

when in use, the outer wall of the pipe body 1 is made of a steel pipe, the lining is made of a high-chromium wear-resistant alloy material, the steel pipe and the lining form better metallurgical bonding, the wear-resistant and corrosion-resistant characteristics of the high-alloy material are achieved, high mechanical strength and impact resistance are achieved, the thermal expansion coefficients of the inner layer and the outer layer are the same, the inner layer cannot crack on working conditions with high abrupt change and frequent change, the pipeline system is small in resistance and attractive in appearance due to the fact that early failure occurs, the pipe body 1 can be installed in a flange express joint or direct welding mode, and due to the fact that the impact resistance of the pipe body 1 is high, the pipe can be knocked randomly when local pipe blockage occurs in pipeline diversion, and the pipe can be cut randomly, replaced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a wear-resisting pipe of bimetal complex, includes body (1), its characterized in that: the pipe body (1) is a bimetal wear-resistant straight pipe, a bimetal wear-resistant elbow or a bimetal wear-resistant tee joint, the pipe body (1) is composed of a base pipe (101) and an inner lining pipe (102), the outer wall of the inner lining pipe (102) is fixedly connected with the inner wall of the base pipe (101), and the inner lining pipe (102) is made of super-strong wear-resistant alloy materials which are high-chromium wear-resistant alloy materials.

2. The bimetallic composite wear resistant pipe of claim 1, wherein:

the base pipe (101) is made of a steel pipe, and the material of the base pipe is 20 steel or Q235;

the hardness of the lining pipe (102) is HRC55 or more.

3. The bimetallic composite wear resistant pipe of claim 1, wherein:

the high-chromium wear-resistant alloy material comprises 16Mn, 40Cr, high-chromium cast iron Cr and Cr28 series.

4. The bimetallic composite wear resistant pipe of claim 1, wherein:

the high-chromium wear-resistant alloy material structure contains M7C3 type hard carbide, and the structure of Ka type carbide is rod-shaped.

5. The bimetallic composite wear resistant pipe of claim 1, wherein:

the liner tube (102) has a coefficient of thermal expansion (11.65-13.75) x 106 (mm/mm. DEG C);

the base pipe (101) and the lining pipe (102) have the same thermal expansion coefficient.

6. The bimetallic composite wear resistant pipe of claim 1, wherein:

the equal fixed mounting in both ends of body (1) has joint (2), joint (2) are flange express delivery and connect.

7. The bimetallic composite wear resistant pipe of claim 1, wherein:

the included angle of the bimetal wear-resistant elbow is not less than 30 degrees.