CN210531873U - Sulfuric acid dew point corrosion resistant seamless steel pipe - Google Patents
Sulfuric acid dew point corrosion resistant seamless steel pipe Download PDFInfo
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- CN210531873U CN210531873U CN201921410688.5U CN201921410688U CN210531873U CN 210531873 U CN210531873 U CN 210531873U CN 201921410688 U CN201921410688 U CN 201921410688U CN 210531873 U CN210531873 U CN 210531873U
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Abstract
The utility model relates to a seamless steel pipe technical field specifically is a sulphuric acid dew point corrosion resistant seamless steel pipe, including the anticorrosive component of seamless steel pipe body and interface, the installation notch has all been seted up to the tip inner wall of seamless steel pipe body, is provided with the anticorrosive component of interface in the installation notch, and the anticorrosive component of interface includes ceramic inner core pipe, link, sealed annular and elastic sealing ring, and beneficial effect is: the utility model discloses in be provided with the anticorrosive component of interface in the junction of two seamless steel pipe bodies, ceramic inner core pipe and link in the anticorrosive component of interface are made for integrated into one piece's ceramic material, have good acid corrosion resistance, the outer wall of a pair of elastic sealing ring that ceramic inner core pipe outer wall card was established and the outer wall in close contact with of installation notch, effective separation acid gas oozes along the installation clearance between ceramic inner core pipe and the installation notch inner wall, avoids two seamless steel pipe body junctions to be corroded by acid gas.
Description
Technical Field
The utility model relates to a seamless steel pipe technical field specifically is a sulphuric acid dew point corrosion resistant seamless steel pipe.
Background
In boilers and industrial processing furnaces using heavy oil or sulfur-containing gas as fuel, the sulfuric acid generated in flue gas often corrodes the inner wall of a seamless steel pipe for guiding air, so that the guide steel pipe is damaged, and the use is influenced. In the pipeline connection of diversion steel pipes, the connection is usually carried out through flanges at two ends of the steel pipes, but the connection part of the steel pipes is most easily corroded by sulfuric acid, so that the toxic smoke gas leakage condition is most easily caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sulphuric acid dew point corrosion resistant seamless steel 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: a sulfuric acid dew point corrosion resistant seamless steel pipe, which comprises a seamless steel pipe body and a joint corrosion resistant component, the inner walls of the end parts of the seamless steel pipe bodies are provided with mounting notches, interface corrosion-resistant members are arranged in the mounting notches, the interface anti-corrosion component comprises a ceramic inner core pipe, a connecting end, a sealing ring groove and an elastic sealing ring, wherein one half of the ceramic inner core pipe is inserted into the mounting notch, the outer wall of one end of the ceramic inner core pipe is the connecting end, the outer wall of the connecting end is provided with an external thread, one end of the seamless steel pipe body is tightly attached to the inside of the mounting notch and is provided with a connecting wall, the inner wall of the connecting wall is provided with an internal thread, and link and connection wall pass through threaded connection, two pairs of sealed annulars have been seted up to the outer wall of pottery inner core pipe, all cooperate the card in every sealed annular to be equipped with the elastic sealing ring, and the notch has been seted up to elastic sealing ring one side, the welding of the tip outer wall of seamless steel pipe body has the flange.
Preferably, the outer wall of the ceramic inner core tube is in contact with the inner wall of the mounting notch, and the outer wall of the elastic sealing ring is in close contact with the inner wall of the mounting notch.
Preferably, the inner edges of the two ports of the ceramic inner core tube are provided with flow guide ports, and the flow guide ports are chamfers inclined at 30 degrees.
Preferably, the outer side wall of the flange is provided with an annular groove, a corrosion-resistant elastic sheet is embedded in the annular groove, and the surface of the corrosion-resistant elastic sheet is flush with the outer side wall of the flange.
Preferably, the seamless steel tube body comprises a carbon steel tube layer, an alloy corrosion-resistant layer and a zinc coating layer, the alloy corrosion-resistant layer is arranged on the inner wall of the carbon steel tube layer, the alloy corrosion-resistant layer and the carbon steel tube layer are fixedly formed through hot rolling, and a polishing layer is arranged on the inner wall of the alloy corrosion-resistant layer.
Preferably, the outer wall of the carbon steel pipe layer is provided with an acid washing layer, and the outer wall of the acid washing layer is provided with a zinc coating in a spraying manner.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in be provided with interface anti-corrosion component in the junction of two seamless steel pipe bodies, ceramic inner core pipe and link in the interface anti-corrosion component are made for integrated into one piece's ceramic material, have good acid corrosion resistance, the outer wall of a pair of elastic sealing ring that ceramic inner core pipe outer wall card was established closely contacts with the outer wall of installation notch, effectively blocks that acid gas from oozing along the installation clearance between ceramic inner core pipe and the installation notch inner wall, avoids two seamless steel pipe body junctions to be corroded by acid gas;
2. the utility model discloses in, the galvanizing coat that seamless steel pipe body inner wall was established can improve the acid corrosion resistance of seamless steel pipe body inner wall, and the galvanizing coat that seamless steel pipe body outer wall was established can strengthen the anti-oxidant effect of seamless steel pipe body surface.
Drawings
FIG. 1 is an exploded view of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention;
FIG. 3 is a front sectional view of the structure of the present invention;
fig. 4 is a side sectional view of the seamless steel tube body of the present invention.
In the figure: the seamless steel pipe comprises a seamless steel pipe body 1, a carbon steel pipe layer 101, an alloy corrosion-resistant layer 102, a zinc coating layer 103, an interface corrosion-resistant component 2, an installation notch 3, a ceramic inner core pipe 4, a connecting end 5, a sealing ring groove 6, an elastic sealing ring 7, a notch 71, a connecting wall 8, a flange 9, a corrosion-resistant elastic sheet 10 and a diversion opening 11.
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.
Referring to fig. 1 to 4, the present invention provides a technical solution: a sulfuric acid dew point corrosion resistant seamless steel pipe comprises a seamless steel pipe body 1 and an interface corrosion resistant member 2, as shown in a combined drawing 1 and a drawing 3, the end inner wall of the seamless steel pipe body 1 is provided with an installation notch 3, the interface corrosion resistant member 2 is arranged in the installation notch 3, the interface corrosion resistant member 2 comprises a ceramic inner core pipe 4, a connecting end 5, a sealing ring groove 6 and an elastic sealing ring 7, the ceramic inner core pipe 4 and the connecting end 5 are made of integrally formed ceramic materials and have good acid corrosion resistance, one half of the ceramic inner core pipe 4 is inserted in the installation notch 3, the outer wall of the ceramic inner core pipe 4 is contacted with the inner wall of the installation notch 3, the outer wall of one end of the ceramic inner core pipe 4 is the connecting end 5, the outer wall of the connecting end 5 is provided with external threads, and a connecting wall 8 is arranged at one end of the, the inner wall of connecting wall 8 is provided with the internal thread, and link 5 and connecting wall 8 pass through threaded connection, install fixedly to the anticorrosive component 2 of interface, two pairs of sealed annular 6 have been seted up to the outer wall of pottery inner core pipe 4, the cooperation card is equipped with elastic sealing ring 7 in the sealed annular 6, notch 71 has been seted up to elastic sealing ring 7 one side, be convenient for go into elastic sealing ring 7 card and install in sealed annular 6, elastic sealing ring 7's outer wall and the inner wall in close contact with of installation notch 3, prevent acid gas corrosion seamless steel pipe body 1's port.
As shown in fig. 3, the both ends mouth inward flange of pottery inner core pipe 4 is provided with water conservancy diversion mouth 11, water conservancy diversion mouth 11 is for being the chamfer of 30 slopes, conveniently carry out the water conservancy diversion to acid gas, the welding of the tip outer wall of seamless steel pipe body 1 has flange 9, combine fig. 1 and fig. 3 to show, when two seamless steel pipe bodies 1 are connected, connect the flange 9 of two seamless steel pipe body 1 tip through the bolt and fix, wherein the annular groove has been seted up to the lateral wall of flange 9, the embedded corrosion-resistant elastic piece 10 that is provided with in the annular groove, the surface of corrosion-resistant elastic piece 10 flushes with the lateral wall of flange 9 mutually, avoid the contact surface of two flanges 9 to be corroded and cause the condition of revealing or difficult dismantlement.
As shown in fig. 4, the seamless steel tube body 1 includes a carbon steel tube layer 101, an alloy corrosion-resistant layer 102 and a zinc coating layer 103, the inner wall of the carbon steel tube layer 101 is provided with the alloy corrosion-resistant layer 102, the alloy corrosion-resistant layer 102 and the carbon steel tube layer 101 are fixedly formed by hot rolling, the alloy corrosion-resistant layer 102 enhances the new corrosion-resistant effect of the inner wall of the seamless steel tube body 1, the inner wall of the alloy corrosion-resistant layer 102 is provided with a polished layer to ensure the smoothness of the inner wall surface of the seamless steel tube body 1 and enhance the corrosion-resistant performance, the outer wall of the carbon steel tube layer 101 is provided with a pickling layer to ensure the cleanliness of the seamless steel tube body 1, and simultaneously, harmful trace elements such as arsenic, tin, lead and the like contained in the seamless steel tube body 1 are well treated, and the outer wall of the pickling layer is formed by electroplating to.
The working principle is as follows: when the utility model is used for installing the interface anti-corrosion component 2, as shown in a combined drawing 1 and a drawing 3, the connecting end 5 at one end of the ceramic inner core tube 4 is fixedly connected with the connecting wall 8 at one end inner wall of the seamless steel tube body 1 through screw threads, at the moment, half of the ceramic inner core tube 4 is inserted into the installing notch 3 arranged at the end part of the seamless steel tube body 1 in a matching way, the other half of the ceramic inner core tube 4 is inserted into the installing notch 3 arranged at the end part of another seamless steel tube body 1, and the two seamless steel tube bodies 1 are fixedly connected with the flange 9 arranged at the end part through bolts, wherein, the ceramic inner core tube 4 and the connecting end 5 are made of an integrally formed ceramic material, which has good acid corrosion resistance, the outer walls of a pair of elastic sealing rings 7 clamped on the outer wall of the ceramic inner core tube 4 are closely contacted with the outer wall of the installing notch 3, and can effectively prevent acid, the connecting part of the two seamless steel pipe bodies 1 is prevented from being corroded by acid gas, the corrosion-resistant elastic pieces 10 are embedded in the contact surfaces of the flanges 9 arranged on the two seamless steel pipe bodies 1 in a clamping mode, the condition that the contact surfaces of the two flanges 9 are corroded to cause leakage or are not easy to disassemble is avoided, the acid corrosion resistance of the inner wall of the seamless steel pipe body 1 can be improved through the galvanized layer 103 arranged on the inner wall of the seamless steel pipe body 1, and the oxidation resistance of the outer surface of the seamless steel pipe body 1 can be enhanced through the galvanized layer 103 arranged on the outer wall of the seamless steel pipe body 1.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a sulfuric acid dew point corrosion resistant seamless steel pipe, includes seamless steel pipe body (1) and interface corrosion-resistant component (2), its characterized in that: the seamless steel pipe comprises a seamless steel pipe body (1), wherein an installation notch (3) is formed in the inner wall of the end part of the seamless steel pipe body (1), an interface corrosion-resistant component (2) is arranged in the installation notch (3), the interface corrosion-resistant component (2) comprises a ceramic inner core pipe (4), a connecting end (5), a sealing ring groove (6) and an elastic sealing ring (7), one half of the ceramic inner core pipe (4) is inserted into the installation notch (3), the outer wall of one end of the ceramic inner core pipe (4) is the connecting end (5), external threads are arranged on the outer wall of the connecting end (5), a connecting wall (8) is arranged in the installation notch (3) and is tightly attached to one end of the seamless steel pipe body (1), the inner wall of the connecting wall (8) is provided with internal threads, the connecting end (5) is connected with the connecting wall (8) through, all cooperate the card to be equipped with elastic sealing ring (7) in every sealed annular (6), notch (71) have been seted up to elastic sealing ring (7) one side, the welding of the tip outer wall of seamless steel pipe body (1) has flange (9).
2. The sulfuric acid dew point corrosion resistant seamless steel tube of claim 1, wherein: the outer wall of the ceramic inner core tube (4) is in contact with the inner wall of the mounting notch (3), and the outer wall of the elastic sealing ring (7) is in close contact with the inner wall of the mounting notch (3).
3. The sulfuric acid dew point corrosion resistant seamless steel tube of claim 1, wherein: the inner edges of two ports of the ceramic inner core tube (4) are provided with flow guide ports (11), and the flow guide ports (11) are chamfers inclined by 30 degrees.
4. The sulfuric acid dew point corrosion resistant seamless steel tube of claim 1, wherein: the outer side wall of the flange (9) is provided with an annular groove, a corrosion-resistant elastic sheet (10) is embedded in the annular groove, and the surface of the corrosion-resistant elastic sheet (10) is flush with the outer side wall of the flange (9).
5. The sulfuric acid dew point corrosion resistant seamless steel tube of claim 1, wherein: the seamless steel pipe body (1) comprises a carbon steel pipe layer (101), an alloy corrosion-resistant layer (102) and a zinc coating (103), wherein the alloy corrosion-resistant layer (102) is arranged on the inner wall of the carbon steel pipe layer (101), the alloy corrosion-resistant layer (102) and the carbon steel pipe layer (101) are fixedly formed through hot rolling, and a polishing layer is arranged on the inner wall of the alloy corrosion-resistant layer (102).
6. The sulfuric acid dew point corrosion resistant seamless steel tube as claimed in claim 5, wherein: the outer wall of the carbon steel pipe layer (101) is provided with an acid washing layer, and the outer wall of the acid washing layer is provided with a zinc coating (103) in a spraying mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410688.5U CN210531873U (en) | 2019-08-28 | 2019-08-28 | Sulfuric acid dew point corrosion resistant seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410688.5U CN210531873U (en) | 2019-08-28 | 2019-08-28 | Sulfuric acid dew point corrosion resistant seamless steel pipe |
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| CN210531873U true CN210531873U (en) | 2020-05-15 |
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| CN201921410688.5U Active CN210531873U (en) | 2019-08-28 | 2019-08-28 | Sulfuric acid dew point corrosion resistant seamless steel pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145819A (en) * | 2020-10-14 | 2020-12-29 | 祁东中燃城市燃气发展有限公司 | Gas conveying pipeline |
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2019
- 2019-08-28 CN CN201921410688.5U patent/CN210531873U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145819A (en) * | 2020-10-14 | 2020-12-29 | 祁东中燃城市燃气发展有限公司 | Gas conveying pipeline |
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