阅读说明：本技术 一种高耐酸腐蚀复合钛质金属软管 (High acid corrosion resistant composite titanium metal hose ) 是由 陈文学 陈广斌 陈雷 陈四平 张小朋 齐金祥 于 2021-08-16 设计创作，主要内容包括：本发明实施例公开了一种高耐酸腐蚀复合钛质金属软管,包括：法兰、连接卡箍、连接套环、波纹管、钢丝网套和对焊环,其中,所述法兰和所述对焊环连接,以连接管路和设备,所述对焊环与所述波纹管连接,所述钢丝网套包覆于波纹管的外侧,所述钢丝网套和连接套环与连接卡箍连接。所述波纹管和所述对焊环的材质为钛材,所述连接卡箍、所述连接套环和所述钢丝网套的材质为奥氏体不锈钢材质,所述法兰的材质可为碳钢或不锈钢。本发明实施例可以降低金属管成本,耐腐蚀性能好,能够有效消除外插钛材金属波纹管的缝隙腐蚀发生,确保柔性零件金属波纹管的稳定运行。(The embodiment of the invention discloses a composite titanium metal hose with high acid corrosion resistance, which comprises: flange, connection clamp, the connection lantern ring, bellows, steel wire netting cover and butt weld ring, wherein, the flange with the butt weld ring is connected to connecting line and equipment, the butt weld ring with the bellows is connected, the steel wire netting cover cladding is in the outside of bellows, steel wire netting cover and the connection lantern ring are connected with the connection clamp. The bellows with the material of butt welding ring is the titanium material, connect the clamp connect the lantern ring with the material of wire mesh cover is austenite stainless steel material, the material of flange can be carbon steel or stainless steel. The embodiment of the invention can reduce the cost of the metal pipe, has good corrosion resistance, can effectively eliminate the occurrence of crevice corrosion of the externally inserted titanium metal corrugated pipe, and ensures the stable operation of the flexible part metal corrugated pipe.)

1. A composite titanium metal hose with high acid corrosion resistance, characterized in that the metal hose comprises: a flange, a connecting hoop, a connecting lantern ring, a corrugated pipe, a steel wire mesh sleeve and a butt welding ring, wherein,

the flange is connected with the butt welding ring to connect a pipeline or equipment, the butt welding ring is connected with the corrugated pipe, the steel wire net cover is coated on the outer side of the corrugated pipe, and the steel wire net cover and the connecting lantern ring are connected with the connecting clamp;

the bellows with the material of butt welding ring is the titanium material, connect the clamp the connect the lantern ring with the material of wire mesh cover is austenite stainless steel material, the material of flange is carbon steel or stainless steel.

2. The metal hose of claim 1, wherein the bellows is an annular metal bellows, and the bellows and the butt-welding ring are welded together by flash welding.

3. The metal hose of claim 1, wherein the wire mesh sleeve is welded over an outer diameter of the connector clip.

4. A metal hose according to claim 1, wherein the connector clip is adapted to be crimped over the outside diameter of a straight section of the corrugated tubing as a reinforcement for the external weld of the corrugated tubing.

5. The metal hose of claim 1, wherein the flange and the butt-welding ring are combined to form a connecting joint of the metal hose, and are connected with a flange of the pipeline or the equipment in a sealing mode.

6. The metal hose of claim 1, wherein the connector clip is configured to circumferentially reinforce a straight section of the bellows and reduce a gap between the bellows and the flange and the butt ring.

7. The metal hose of claim 1, wherein the bellows is a flexible bellows configured to absorb device vibration or compensate for displacement.

8. The metal hose of claim 1, wherein the corrugated tube and the wire mesh are fixed by end reinforcement through a connection collar and connected by welding.

Technical Field

The invention relates to the technical field of metal hose structure design, in particular to a high-acid-corrosion-resistance composite titanium metal hose.

Background

The first stage of the production process of terephthalic Acid (P-phThalic Acid, PTA) takes dimethylbenzene as raw material, cobalt acetate and manganese acetate as catalysts, hydrobromic Acid as promoters, acetic Acid as solvent and air as oxidant, after reaction, the temperature of a medium in a pipeline of an oxidation unit is 150 ℃, and a main corrosion medium is acetic Acid containing bromine, so that the corrosion of the pipeline and pipeline elements in the oxidation unit, which are in contact with the medium, is very serious. Generally, stainless steel containing molybdenum will be etched rapidly, and the best material capable of resisting and being qualified in such a harsh environment is only titanium.

If the titanium material is adopted for product design, the cost is extremely high, but the titanium material and the stainless steel or the carbon steel can not be directly welded, so that a special structure needs to be designed if various materials are adopted to meet the requirement of pressure-bearing stress connection, and simultaneously, the corrosion-resistant working condition requirement and the strength requirement of the pipeline are met, and the cost of the product can be reduced. The prior art does not find suitable structural patterns.

Disclosure of Invention

The embodiment of the invention solves the technical problems that: overcomes the defects of the prior art and provides a composite titanium metal hose with high acid corrosion resistance.

The technical solution of the embodiment of the invention is as follows:

in order to solve the technical problem, an embodiment of the present invention provides a composite titanium metal hose with high acid corrosion resistance, including: a flange, a connecting hoop, a connecting lantern ring, a corrugated pipe, a steel wire mesh sleeve and a butt welding ring, wherein,

the flange is connected with the butt welding ring to connect a pipeline and equipment, the butt welding ring is connected with the corrugated pipe, the steel wire net cover is coated on the outer side of the corrugated pipe, and the steel wire net cover and the connecting lantern ring are connected with the connecting clamp;

the bellows with the material of butt welding ring is the titanium material, connect the clamp connect the lantern ring with the material of wire mesh cover is austenite stainless steel material, the material of flange can be carbon steel or stainless steel.

Optionally, the corrugated pipe is an annular metal corrugated pipe, and the corrugated pipe and the butt welding ring are welded and connected by flash welding.

Optionally, the wire mesh sleeve is welded over an outer diameter of the connector clip.

Optionally, the connector clip is configured to be crimped onto the outside diameter of a straight section of the corrugated tubing to provide a reinforcement when the corrugated tubing is externally welded.

Optionally, the flange and the butt welding ring are combined to form a connection joint of the metal hose, and the connection joint is connected with the flange of the pipeline or the equipment in a sealing manner.

Optionally, the connector clip is configured to circumferentially reinforce a straight section of the bellows and reduce a gap between the bellows and the flange and the butt ring.

Optionally the bellows is a flexible bellows configured to absorb device vibrations or compensate for displacement.

Optionally, the end of the corrugated pipe and the end of the steel wire mesh sleeve are fixedly reinforced by a connecting lantern ring and are connected by welding.

Compared with the prior art, the embodiment of the invention has the advantages that:

the embodiment of the invention reasonably designs and selects materials, improves the pressure resistance, controls the cost, ensures the corrosion resistance of the bromine-containing acetic acid at the temperature of more than 135 ℃, and meets the requirement of the project on the service life. The structure has the advantages that the bursting pressure can reach 5 times of the design pressure, the connection clamp can effectively eliminate the occurrence of seam corrosion of the externally inserted titanium metal corrugated pipe, and the stable operation of the flexible part metal corrugated pipe is ensured. In addition, the metal hose provided by the embodiment of the invention plays a certain guiding role in the research and development of other titanium-like metal hoses.

Drawings

Fig. 1 is a schematic structural diagram of a composite titanium metal hose with high acid corrosion resistance according to an embodiment of the present invention.

Detailed Description

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.

In the prior art, the titanium material is adopted for product design, the cost is extremely high, but the titanium material and stainless steel or carbon steel can not be directly welded, so a special structure needs to be designed if various materials are used, the requirement of pressure-bearing stress connection is met, the requirements of corrosion-resistant working condition and strength of a pipeline are met, and the cost of the product can be reduced.

In order to solve the problems, the embodiment of the invention adopts brand-new structural design and reasonable material selection, firstly, the materials in contact with the medium are all made of titanium materials, so as to meet the corrosion resistance requirement and strength requirement of bromine-containing acetic acid corrosion environment with the temperature of more than 135 ℃; secondly, the problem that austenite and titanium cannot be welded is solved, a reinforced connection clamp is designed to eliminate the possibility of corrosion of a titanium material gap, and the stable operation of the flexible part metal corrugated pipe is ensured; thirdly, the bearing capacity of the blind plate force is met by optimizing the double-layer universal steel wire net cover into the single-layer high-strength steel wire net cover; fourthly, parts which are not in contact with the medium are all made of austenitic stainless steel, so that the manufacturing cost of the product is greatly reduced.

Next, the structure of the metal hose provided by the embodiment of the present invention will be described in detail with reference to fig. 1.

Example one

Referring to fig. 1, a schematic structural diagram of a high acid corrosion resistance composite titanium metal hose according to an embodiment of the present invention is shown, and as shown in fig. 1, the high acid corrosion resistance composite titanium metal hose may include: a flange 1, a connecting hoop 2, a connecting lantern ring 3, a corrugated pipe 4, a steel wire mesh sleeve 5 and a butt welding ring 6, wherein,

the flange 1 is connected with the butt welding ring 6 to connect a pipeline or equipment, the butt welding ring 6 is connected with the corrugated pipe 4, the steel wire net 5 is coated on the outer side of the corrugated pipe 4, and the steel wire net 5 and the connecting lantern ring 3 are connected with the connecting hoop 2;

bellows 4 with the material of butt welding ring 6 is the titanium material, connect clamp 2 connect the lantern ring 3 with the material of wire mesh cover 5 is austenite stainless steel material, the material of flange 1 can be carbon steel or stainless steel.

The embodiment of the invention reasonably designs and selects materials, improves the pressure resistance, controls the cost, ensures the corrosion resistance of the bromine-containing acetic acid at the temperature of more than 135 ℃, and meets the requirement of the project on the service life. The structure has the advantages that the bursting pressure can reach 5 times of the design pressure, the connection clamp can effectively eliminate the occurrence of seam corrosion of the externally inserted titanium metal corrugated pipe, and the stable operation of the flexible part metal corrugated pipe is ensured.

In a specific implementation manner of the embodiment of the present invention, the corrugated pipe may be an annular metal corrugated pipe, and the corrugated pipe and the butt welding ring are welded and connected by flash welding. The wire mesh cover is welded on the outer diameter of the connecting clamp. The connecting clamp is used for hooping the straight section of the corrugated pipe on the outer diameter to serve as a reinforcing type when the corrugated pipe is welded outside.

The flange and the butt welding ring are combined into a connecting joint of the metal hose and are connected with the pipeline or the flange of the equipment in a sealing mode.

The connection clamp is configured to circumferentially reinforce a straight section of the corrugated pipe and reduce a gap between the corrugated pipe and the flange and the butt-welding ring.

The bellows is a flexible bellows configured to absorb device vibrations or compensate for displacement.

The corrugated pipe and the steel wire net sleeve are reinforced and fixed at the end part through a connecting lantern ring and are connected through welding.

The technical solution of the invention is as follows: comprises a flange, a reinforced connection hoop, a reinforced connection lantern ring, an annular metal corrugated pipe, a high-strength steel wire mesh sleeve and the like. Through reasonable structural design, on the premise of meeting the service life of a product, the technical problems of high corrosion resistance of the product, effective control of the manufacturing cost of the product and the like through reasonable structural optimization design are solved, and through brand-new structural design and reasonable material selection, firstly, materials in contact with a medium are all made of titanium materials, so that the corrosion resistance requirement and the strength requirement of a bromine-containing acetic acid corrosion environment with the temperature of more than 135 ℃ are met; secondly, the problem that austenite and titanium cannot be welded is solved, a reinforced connection clamp is designed to eliminate the possibility of corrosion of a titanium material gap, and the stable operation of the flexible part metal corrugated pipe is ensured; thirdly, the bearing capacity of the blind plate force is met by optimizing the double-layer universal steel wire net cover into the single-layer high-strength steel wire net cover; fourthly, parts which are not in contact with the medium are all made of austenitic stainless steel, so that the manufacturing cost of the product is greatly reduced.

The structure of the corrugated pipe mainly comprises a flange, a reinforced connection hoop, a reinforced connection lantern ring, an annular metal corrugated pipe, a high-strength steel wire mesh sleeve and the like. The high acid corrosion resistance composite titanium metal hose has the service life of at least more than 1 year, can completely meet the requirements of the site, and has very high construction operability.

In the embodiment of the invention, the flange 1 and the butt welding ring 6 are used for connecting pipelines and equipment, and a loose sleeve structure is adopted, so that the cost is reduced, and the disassembly and the assembly are convenient. The reinforced connection clamp 2 is used as a welded connection rooting part of the net sleeve, and also has the functions of reinforcing the straight edge section of the corrugated pipe in the circumferential direction and reducing the gap between the corrugated pipe and the butt welding ring of the flange, so that the occurrence of seam corrosion of a titanium material is avoided, and the problem that austenite and titanium cannot be welded is perfectly solved. The reinforced connecting lantern ring 3 is mainly used for reinforcing and fixing the end part of the net sleeve and facilitating welding connection. The annular metal bellows 4 is a main flexible part that can absorb vibration, compensate displacement, and the like. The high-strength steel wire mesh sleeve 5 plays a role in circumferential reinforcement on the annular metal corrugated pipe 4 and bears the blind plate force of the pipeline.

Compared with the prior art, the high acid corrosion resistance composite titanium metal hose provided by the embodiment of the invention has the following beneficial effects:

the embodiment of the invention reasonably designs and selects materials, improves the pressure resistance, controls the cost, ensures the corrosion resistance of the bromine-containing acetic acid at the temperature of more than 135 ℃, and meets the requirement of the project on the service life. The structure has the advantages that the bursting pressure can reach 5 times of the design pressure, the connection clamp can effectively eliminate the occurrence of seam corrosion of the externally inserted titanium metal corrugated pipe, and the stable operation of the flexible part metal corrugated pipe is ensured. In addition, the metal hose provided by the embodiment of the invention plays a certain guiding role in the research and development of other titanium-like metal hoses.

The detailed description set forth herein may provide those skilled in the art with a more complete understanding of the present application, and is not intended to limit the present application in any way. Thus, it will be appreciated by those skilled in the art that modifications or equivalents may still be made to the present application; all technical solutions and modifications thereof which do not depart from the spirit and technical essence of the present application should be covered by the scope of protection of the present patent application.