阅读说明：本技术 一种复合型防腐、耐磨、耐高温管 (Composite anti-corrosion, wear-resistant and high-temperature-resistant pipe ) 是由 刘元银 于 2019-11-25 设计创作，主要内容包括：本发明涉及一种复合型防腐、耐磨、耐高温管,包括金属管体,所述金属管体内套设有陶瓷管,所述陶瓷管与金属管体之间通过无机层固定；所述陶瓷管由多个瓷片拼接而成,所述相邻瓷片之间通过耐高温耐腐蚀粘接剂粘接固定。本发明能够防腐、耐磨、耐高温,抗冲击性能好,生产过程简单,成本低廉。(The invention relates to a composite anti-corrosion, wear-resistant and high-temperature-resistant pipe which comprises a metal pipe body, wherein a ceramic pipe is sleeved in the metal pipe body, and the ceramic pipe and the metal pipe body are fixed through an inorganic layer; the ceramic tube is formed by splicing a plurality of ceramic sheets, and adjacent ceramic sheets are bonded and fixed through a high-temperature-resistant corrosion-resistant adhesive. The invention has the advantages of corrosion resistance, wear resistance, high temperature resistance, good shock resistance, simple production process and low cost.)

1. The utility model provides a compound anticorrosive, wear-resisting, high temperature resistant pipe, includes metal pipe body (1), its characterized in that: a ceramic tube (2) is sleeved in the metal tube body (1), and the ceramic tube (2) and the metal tube body (1) are fixed through an inorganic layer (3); the ceramic tube (2) is formed by splicing a plurality of ceramic sheets (2a), and the adjacent ceramic sheets (2a) are bonded and fixed through a high-temperature-resistant corrosion-resistant adhesive.

2. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 1, characterized in that: the high-temperature-resistant corrosion-resistant adhesive is one of organic silicon adhesive, phenolic resin adhesive, temperature-resistant epoxy adhesive and polyimide adhesive.

3. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 1, characterized in that: one side of the ceramic chip (2a) is provided with a combination groove (2c), and the other side is provided with a bulge (2b) matched with the combination groove (2c) in shape.

4. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 3, characterized in that: the size of the coupling groove (2c) is larger than that of the protrusion (2 b).

5. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 1, characterized in that: the outer side of the ceramic tube (2) is coated with a layer of organic anticorrosive film (4).

6. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 5, characterized in that: the outer side of the ceramic tube (2) is coated with a polyurethane film.

7. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 1, characterized in that: the ceramic pieces (2a) are alumina ceramic pieces.

8. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 7, characterized in that: the ceramic chip (2a) is made of SiO₂4～5％、ZrO₂1.2～2％、CaO 1～1.8％、MgO 0.5～0.8％、SiC 1～1.6％、TiO₂0.05-0.15% and Al for the rest₂O₃。

9. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 8, characterized in that: the ceramic chip (2a) is prepared by uniformly mixing and molding powder of each component and sintering at high temperature, wherein the particle size of the powder of each component is less than 50 mu m.

10. The composite corrosion-resistant, wear-resistant and high-temperature-resistant pipe according to claim 1, characterized in that: the inorganic layer (3) is a cement layer.

Technical Field

The invention relates to the technical field of special pipes, in particular to a composite anti-corrosion, wear-resistant and high-temperature-resistant pipe.

Background

The special pipe is a pipe used in special environment, different from a common pipe, the use environment of the special pipe is determined, and the special pipe needs to have special performance, such as high temperature resistance, wear resistance, impact resistance and the like. For example, the tertiary air duct of the cement kiln is a special pipeline for the cement kiln, when the cement kiln operates, the temperature change of the inner position of the pipeline is large, the air speed in the pipeline is high, a large amount of fine clinker particles are contained in hot air flow, and the pipeline is directly washed and eroded by the hot air flow containing dust for a long time. And the oil pipeline is used for conveying crude oil and works under high-pressure and corrosive conditions for a long time. In these special scenarios, special pipes are required.

At present, for a special pipe, a cast iron or stainless steel pipe body is generally adopted, and a certain wear-resistant, high-temperature-resistant or corrosion-resistant pouring material is poured on the inner surface to form the inner surface so as to meet the requirements of different scenes. The most common is a composite ceramic tube inside a metal tube. The ceramic has the advantages of wear resistance, high temperature resistance and corrosion resistance, so that the composite pipe has excellent performance. However, the existing ceramic composite tube has complex preparation process, large processing difficulty of the ceramic tube and extremely high cost. Secondly, the existing ceramic composite pipe has poor impact resistance, the inner ceramic wall is easy to break, damage and fall off, and the service life is short.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides the composite anti-corrosion, wear-resistant and high-temperature-resistant pipe which can resist corrosion, wear and high temperature, has good shock resistance, simple production process and low cost.

The technical scheme for solving the technical problems is as follows: a composite anti-corrosion, wear-resistant and high-temperature-resistant pipe comprises a metal pipe body, wherein a ceramic pipe is sleeved in the metal pipe body, and the ceramic pipe and the metal pipe body are fixed through an inorganic layer; the ceramic tube is formed by splicing a plurality of ceramic sheets, and adjacent ceramic sheets are bonded and fixed through a high-temperature-resistant corrosion-resistant adhesive.

The invention has the beneficial effects that: according to the ceramic tube, the ceramic tube is sleeved in the metal tube body and is formed by splicing a plurality of ceramic sheets, so that the processing and production difficulty is low, and the manufacturing cost is low; according to the invention, the ceramic inner tube is manufactured in a way that a plurality of ceramic plates are spliced into a tube, and the ceramic tube is decomposed into the individual ceramic plates, so that the area of a single ceramic part is greatly reduced, and the impact resistance is greatly improved; the ceramic chips are bonded by the high-temperature-resistant corrosion-resistant adhesive, the processed adhesive can be used as a filler to completely fill gaps among the ceramic chips, and the ceramic chips are good in overall sealing performance and strong in anti-seepage capability.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the high-temperature-resistant and corrosion-resistant adhesive is one of organic silicon adhesive, phenolic resin adhesive, temperature-resistant epoxy adhesive and polyimide adhesive.

The beneficial effect of adopting the further scheme is that: good adhesion property, high temperature resistance and corrosion resistance.

Furthermore, a combination groove is formed in one side of the ceramic chip, and a protrusion matched with the combination groove in shape is arranged on the other side of the ceramic chip.

Preferably, the size of the coupling groove is larger than that of the protrusion.

The beneficial effect of adopting the further scheme is that: can guarantee to combine the concatenation more convenient, can adjust the clearance between the ceramic chip as required simultaneously, guarantee that the assembly has great surplus.

Further, the outer side of the ceramic tube is coated with a layer of organic anti-corrosion film.

Preferably, the outer side of the ceramic tube is coated with a polyurethane film.

The beneficial effect of adopting the further scheme is that: set up organic anticorrosive coating, the polyurethane membrane is preferably selected, can effectively seal ceramic pipe, prevents the seepage, can also play protection, anticorrosive effect simultaneously, and when the assembly, the membrane can also provide cohesion to a certain extent, plays the effect of stereotyping to ceramic pipe.

Further, the ceramic chip is an alumina ceramic chip.

Preferably, the ceramic tile is made of SiO ₂4～5％、ZrO₂1.2～2％、CaO 1～1.8％、MgO 0.5～0.8％、SiC 1～1.6％、TiO₂0.05-0.15% and Al for the rest₂O₃。

Preferably, the ceramic chip is prepared by uniformly mixing and molding the powder of each component and then sintering at high temperature, wherein the particle size of the powder of each component is less than 50 μm.

The beneficial effect of adopting the further scheme is that: the aluminum oxide ceramic is adopted, the cost is lower, the performance is better, other metal oxides are added, the impact resistance and the corrosion resistance of the ceramic can be improved, a glaze surface with certain roughness is formed on the surface of the sintered ceramic, the ceramic sheet is convenient to attach to the inside of a metal pipe body, the anti-falling performance is improved, the metal oxides can be used as a filler to fill bubbles formed in the ceramic sintering process, the ceramic sheet is more compact, and the impact resistance is better.

Further, the inorganic layer is a cement layer.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is a schematic view of an assembly structure of the ceramic tile of the present invention;

in the figure: 1. the anti-corrosion ceramic pipe comprises a metal pipe body, 2, a ceramic pipe, 2a, ceramic chips, 2b, protrusions, 2c, a combination groove, 3, an inorganic layer, 4 and an organic anti-corrosion film.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the composite anti-corrosion, wear-resistant and high-temperature-resistant pipe designed by the invention comprises a metal pipe body 1, a ceramic pipe 2 is sleeved in the metal pipe body 1, and the ceramic pipe 2 and the metal pipe body 1 are fixed through an inorganic layer 3. The ceramic tube 2 is formed by splicing a plurality of ceramic sheets 2a, and the adjacent ceramic sheets 2a are bonded and fixed through a high-temperature-resistant corrosion-resistant adhesive.

The above-described metal pipe body 1, ceramic pipe 2 and inorganic layer 3 are the basic structural framework of the present invention, and the purpose is to make the metal pipe body 1 and ceramic pipe 2 bonded together through the inorganic layer 3, and the bonded portion has no gap. The metal pipe body 1, the ceramic pipe 2, and the inorganic layer 3 may be in various forms regardless of the shape in fig. 1.

The tiles 2a of the present invention can be trapezoidal in shape and can also be provided with a snap-fit structure for bonding. The inorganic layer 3 of the present invention is preferably a cement layer.

The high-temperature-resistant and corrosion-resistant adhesive is preferably one of organic silicon adhesive, phenolic resin adhesive, temperature-resistant epoxy adhesive and polyimide adhesive. The ceramic tubes 2 are spliced by adopting the high-temperature-resistant and corrosion-resistant adhesive to bond the ceramic sheets 2a, and the high-temperature-resistant and corrosion-resistant adhesive can be used as a filler to fill bonding gaps among the ceramic sheets 2a to play a role of leakage prevention. In addition, because the adhesive is used as the filler, a certain gap can be allowed between the tiles 2a during assembly, so that a larger assembly margin can be obtained, and the splicing operation and the actual assembly are more facilitated.

As shown in fig. 3, the present invention also provides an improved technical solution, in the improved technical solution, one side of the tile 2a is provided with a combination groove 2c, and the other side is provided with a protrusion 2b which is matched with the combination groove 2c in shape.

Preferably, the size of the coupling groove 2c is larger than that of the protrusion 2 b.

The protrusion 2b and the combining groove 2c are used for facilitating positioning and combining when the ceramic pieces 2a are spliced, and have a certain sealing effect, so that the formed ceramic tube 2 can be prevented from leaking to a certain extent. The protrusions 2b and the coupling grooves 2c may be in various forms regardless of the shape of fig. 3. For example, the sectional shapes of the protrusions 2b and the coupling grooves 2c may be triangular, semicircular, semi-elliptical, etc.

The size of the combining groove 2c and the protrusion 2b is set for convenient assembly, and simultaneously, the gap between the ceramic pieces 2c can be adjusted according to requirements, thereby ensuring that the assembly has larger allowance.

As shown in fig. 2, the present invention provides another improved technical solution, in which the outer side of the ceramic tube 2 is coated with a layer of organic corrosion-resistant film 4.

Preferably, the ceramic tube 2 is coated with a polyurethane film.

Above-mentioned two kinds of modified technical scheme can effectively seal ceramic pipe, prevents the seepage, can also play protection, anticorrosive effect simultaneously, and when the assembly, the membrane can also provide cohesion to a certain extent, plays the effect of stereotyping ceramic pipe 2.

The ceramic tile 2a of the present invention is the core component of the present invention, and preferably, alumina ceramic which is low in cost and easy to sinter is used.

In order to increase the impact resistance of the ceramic tube 2 of the present invention, the ceramic sheets 2a to be fired do not contain or contain little air bubbles, thereby reducing the probability of breakage.

The tile 2a of the present invention preferably employs the following composition: SiO 2₂4～5％、ZrO₂1.2～2％、CaO 1～1.8％、MgO 0.5～0.8％、SiC 1～1.6％、TiO₂0.05-0.15% and Al for the rest₂O₃. Wherein Al is₂O₃The content of (B) is preferably 90% or more.

The tile 2a of the present invention is preferably prepared by the following method:

firstly, selecting raw materials of each component with the granularity of less than 50 mu m; then uniformly mixing the raw materials of each component according to the component proportion; then pressing the uniformly mixed powder into a ceramic chip 2a shape directly or adding a bonding agent to mix uniformly and then molding into a ceramic chip 2a shape; and finally, sintering the formed ceramic chip 2a blank into the ceramic chip at high temperature, wherein the sintering temperature is more than 1200 ℃.

The ceramic tile 2a prepared by the method is based on the characteristic that the alumina ceramics is easy to foam in the sintering process. This results in a decrease in impact resistance of the ceramic. By adopting the mode, other metal oxides are added, so that the shock resistance and the corrosion resistance of the ceramic can be improved, and meanwhile, a glaze surface with certain roughness is formed on the surface of the sintered ceramic, so that the ceramic plate is conveniently attached in a metal tube body, and the anti-falling performance and the firmness of combination with the inorganic layer 3 are improved. SiO 2₂The CaO and the SiC can also be used as filler to fill bubbles formed in the ceramic sintering process, so that the ceramic chip is more compact and has better impact resistance.

The pipe can be applied to various special scenes, such as a pipeline of a desulfurization system, a flue gas conveying pipeline, an oil conveying pipeline and a tertiary air pipe of a cement kiln, has a wide application range, and can be used in almost any wear-resistant, high-temperature-resistant and/or corrosion-resistant scene.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.