Novel gas pipeline joint coating corrosion degree detection device and method
阅读说明:本技术 一种新型燃气管道补口腐蚀程度的检测设备及方法 (Novel gas pipeline joint coating corrosion degree detection device and method ) 是由 李�灿 赵海阳 刘建 于 2019-11-12 设计创作,主要内容包括:本发明公开了一种新型燃气管道补口腐蚀程度的检测设备及方法,包括管道主体、第一连接法兰、内管主体和第二连接法兰,所述管道主体的两端分别固定安装有第一连接法兰与第二连接法兰,所述管道主体的内部通过环形支撑座固定安装有内管主体,所述内管主体的一端延伸出第二连接法兰的外侧固定连接有连接凸头,所述内管主体位置处第一连接法兰的中央位置处设置有连接凹槽。该新型燃气管道补口腐蚀程度的检测设备及方法通过设置的探头套环以及换能器的矩阵安装使燃气管道在超声导波的检测过程更加全面,同时超声导波验伤方式的检测长度更加优秀,避免了因为检测分析不合理导致忽视管道或者管道补口发生腐蚀的情况。(The invention discloses novel equipment and a method for detecting the corrosion degree of a joint coating of a gas pipeline, and the equipment comprises a pipeline main body, a first connecting flange, an inner pipe main body and a second connecting flange, wherein the first connecting flange and the second connecting flange are respectively and fixedly arranged at two ends of the pipeline main body, the inner pipe main body is fixedly arranged in the pipeline main body through an annular supporting seat, a connecting raised head is fixedly connected to the outer side of one end of the inner pipe main body, which extends out of the second connecting flange, and a connecting groove is arranged in the central position of the first connecting flange at the position of the inner pipe main body. This novel gas pipeline joint coating degree of corrosion's check out test set and method make the gas pipeline more comprehensive at the testing process of supersound guided wave through the probe lantern ring that sets up and the matrix installation of transducer, and the detection length of supersound guided wave wound mode is more outstanding simultaneously, has avoided because the unreasonable condition that leads to neglecting pipeline or pipeline joint coating emergence corruption of testing and analysis.)
1. The utility model provides a novel gas pipeline joint coating degree of corrosion's check out test set and method, includes pipeline main part (1), first flange (2), inner tube main part (4) and second flange (8), the both ends of pipeline main part (1) are fixed mounting respectively has first flange (2) and second flange (8), its characterized in that: the inner pipe comprises a pipe body (1), an inner pipe body (4) is fixedly arranged in the pipe body (1) through an annular supporting seat (6), a protective inner layer (17) is uniformly sprayed on the inner wall of the inner pipe body (4), a probe sleeve ring (9) is fixedly arranged on the inner side of the pipe body (1) at equal intervals, a transducer (5) is uniformly arranged on the outer side of the probe sleeve ring (9), one end of the inner pipe body (4) extends out of the outer side of a second connecting flange (8) and is fixedly connected with a connecting raised head (13), the transducer (5) is fixedly arranged on the outer side of the inner pipe body (4) of the connecting raised head (13), one end, far away from the second connecting flange (8), of the inner pipe body (4) extends to the inner side of a first connecting flange (2), a connecting groove (12) is formed in the position of the inner pipe body (4) at the center of, and the connecting groove (12) and the connecting raised head (13) are matched with each other for use, a protective outer layer (16) is arranged on the outer side of the pipeline main body (1), the first connecting flange (2) and the second connecting flange (8) are fixedly connected with the fixing bolt (7) through the fixing nut (3) matched with each other for use, the connector (18) is fixedly installed at the opposite side of the first connecting flange (2) and the second connecting flange (8) and at the position between the fixing nut (3) and the fixing bolt (7), and the connector (18) and the transducer (5) are matched with each other for use.
2. The novel gas pipeline repaired mouth corrosion degree detection device and method according to claim 1 are characterized in that: and a rubber sealing gasket (11) is fixedly arranged at the joint between the first connecting flange (2) and the second connecting flange (8).
3. The novel gas pipeline repaired mouth corrosion degree detection device and method according to claim 1 are characterized in that: and a sealing gasket (10) is uniformly adhered to the inner wall of the connecting groove (12).
4. The novel gas pipeline repaired mouth corrosion degree detection device and method according to claim 1 are characterized in that: and a sealing rubber ring (15) is fixedly arranged between the fixing nut (3) and the fixing bolt (7) and between the first connecting flange (2) and the second connecting flange (8).
5. The novel gas pipeline repaired mouth corrosion degree detection device and method according to claim 1 are characterized in that: the pipeline comprises a pipeline main body (1), a first connecting flange (2), an inner pipe main body (4) and a second connecting flange (8), wherein a conducting wire (14) is arranged inside the pipeline main body (1) and extends to the outer side of the pipeline main body (1).
6. The novel gas pipeline repaired mouth corrosion degree detection device and method according to claim 1 are characterized in that: the protective inner layer (17) is a protective layer formed by electrostatic spraying of epoxy resin powder.
7. A method of making a protective outer layer (16) according to claim 1, wherein: cleaning the outer side of the pipeline main body (1), spraying epoxy powder by static electricity to form a uniformly distributed coating on the outer side of the pipeline main body (1), controlling the thickness of the epoxy resin coating to be between 150 and 200 mu m, uniformly coating an adhesive on the outer side of the epoxy resin coating, winding polyethylene in a viscous state on the outer side of the adhesive, and rolling the polyethylene to enable the polyethylene to be tightly adhered with the adhesive layer.
8. A method for drying the inside of a gas pipeline, comprising a pipeline body (1), an inner pipe body (4) and liquid nitrogen, characterized in that: the liquid nitrogen is vaporized through the vaporizer, heated through the heater and then enters the inner pipe main body (4) to be subjected to low-pressure intermittent blowing, so that water molecules in the inner pipe main body (4) are mixed with dry nitrogen and then are taken out of the pipeline main body (1).
9. A method according to claim 8, characterized by: the temperature of the nitrogen heated by the heater is not lower than 50 ℃.
Technical Field
The invention relates to the technical field of gas pipelines, in particular to novel equipment and a method for detecting corrosion degree of a repaired mouth of a gas pipeline.
Background
The gas pipeline refers to a pipeline for conveying natural gas (including associated gas produced in oil fields) from a mining place or a processing plant to an urban gas distribution center or an industrial enterprise user, which is also called a gas pipeline, the natural gas is conveyed by using the gas pipeline, which is a way of conveying a large amount of natural gas on land, the gas pipeline occupies about half of the total length of the pipeline in the world, the long-distance gas pipeline is generally conveyed by pressurizing a gas compressor, the gas pipeline is rapidly developed in the aspects of selecting and selecting pipes, improving the conveying efficiency, realizing the full-line automation and the like, the pipes are widely made of X-60 low alloy steel (with the degree limit of 41,160 Pa), the pipes are made of materials with higher strength such as X-65, X-70 and the like, in order to reduce the friction resistance in the pipeline, new steel pipes with the thickness of more than 426 mm have generally adopted an inner coating, in addition, gases with different physical properties are conveyed, and a gaseous and liquid fuel gas pipeline conveying test at a low temperature of-70 ℃ and a high pressure of 75,460 Pa, although the fuel gas pipeline conveying has the advantages of low conveying cost, small occupied area, high safety performance and the like, compared with the integral structure of the pipeline, the repaired mouth of the fuel gas pipeline is more easily corroded, and in order to avoid the occurrence of the corresponding corrosion condition of the pipeline and ensure the safety of the fuel gas conveying, a novel device and a method for detecting the corrosion degree of the repaired mouth of the fuel gas pipeline are provided.
Disclosure of Invention
The invention aims to provide novel equipment and a method for detecting the corrosion degree of a repaired mouth of a gas pipeline, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a novel gas pipeline repaired mouth corrosion degree detection device and a method thereof comprise a pipeline main body, a first connecting flange, an inner pipe main body and a second connecting flange, wherein the first connecting flange and the second connecting flange are respectively and fixedly arranged at two ends of the pipeline main body, the inner pipe main body is fixedly arranged in the pipeline main body through an annular supporting seat, a protective inner layer is uniformly sprayed on the inner wall of the inner pipe main body, a probe lantern ring is fixedly arranged on the inner side of the pipeline main body at equal intervals, transducers are uniformly arranged on the outer side of the probe lantern ring, one end of the inner pipe main body extends out of the outer side of the second connecting flange and is fixedly connected with a connecting raised head, the transducers are fixedly arranged on the outer side of the inner pipe main body of the connecting raised head, one end of the inner pipe main body, far away from the second connecting flange, extends into the inner side of the first connecting flange, a connecting groove is arranged at the central position of, the connecting groove and the connecting raised head are matched with each other for use, the outer side of the pipeline main body is provided with a protective outer layer, the first connecting flange and the second connecting flange are fixedly connected with each other through a fixing nut and a fixing bolt which are matched with each other for use, connectors are fixedly mounted at the opposite sides of the first connecting flange and the second connecting flange and at the positions between the fixing nut and the fixing bolt, and the connectors and the energy converter are matched with each other for use.
Preferably, a rubber sealing gasket is fixedly installed at the joint between the first connecting flange and the second connecting flange.
Preferably, the inner wall of the connecting groove is uniformly adhered with a sealing gasket.
Preferably, a sealing rubber ring is fixedly arranged between the fixing nut and the fixing bolt and between the first connecting flange and the second connecting flange.
Preferably, the pipeline main body, the first connecting flange, the inner pipe main body and the second connecting flange are internally provided with conducting wires which extend to the outer side of the pipeline main body.
Preferably, the protective inner layer is a protective layer formed by electrostatic spraying of epoxy resin powder.
Preferably, the outer side of the pipeline body is cleaned, epoxy powder is sprayed on the outer side of the pipeline body by static electricity to form a uniformly distributed coating, the thickness of the epoxy resin coating is controlled to be 150-200 mu m, an adhesive is uniformly coated on the outer side of the epoxy resin coating, polyethylene in a viscous state is wound on the outer side of the adhesive in a side direction, and the polyethylene is rolled to be tightly adhered to the adhesive layer.
Preferably, the method for drying the interior of the gas pipeline comprises a pipeline main body, an inner pipe main body and liquid nitrogen, wherein the liquid nitrogen is vaporized through a vaporizer, heated through a heater and then enters the interior of the inner pipe main body for low-pressure intermittent purging, so that water molecules in the interior of the inner pipe main body are mixed with the dry nitrogen and then are taken out of the pipeline main body.
Preferably, the temperature of the nitrogen gas heated by the heater is not lower than 50 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. the array installation of the probe lantern ring and the transducer enables the detection process of the gas pipeline in the ultrasonic guided wave to be more comprehensive, meanwhile, the detection length of the ultrasonic guided wave damage detection mode is more excellent, the damage detection analysis effect is better, and the condition that the pipeline is ignored or the pipeline repaired mouth is corroded due to unreasonable detection analysis is avoided;
2. the double-layer pipeline design of pipeline main part and inner tube main part has effectively avoided the gas pipeline to take place the condition of leaking in long distance transportation gas in-process, even the gas takes place to leak in the inside of inner tube main part and pipeline main part carries out sealed protection to the gas in addition, has reduced the risk that the incident takes place, has effectively utilized the gas resource simultaneously, has avoided the extravagant phenomenon of the energy.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is an overall cross-sectional structural view of the present invention;
fig. 4 is a schematic structural view of the connecting flange of the present invention.
In the figure: 1. a pipe body; 2. a first connecting flange; 3. fixing a nut; 4. an inner tube body; 5. a transducer; 6. an annular supporting seat; 7. fixing the bolt; 8. a second connecting flange; 9. a probe collar; 10. sealing gaskets; 11. a rubber sealing gasket; 12. a connecting groove; 13. connecting the raised head; 14. a conductive wire; 15. sealing the rubber ring; 16. an outer protective layer; 17. a protective inner layer; 18. a connector is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a novel gas pipeline repaired mouth corrosion degree detection device and method comprises a pipeline
In the invention: a
In the invention: the inner wall of the connecting
In the invention: and sealing
In the invention: the pipeline
In the invention: the protective
In the invention: a method for manufacturing the outer
In the invention: a method for drying the interior of a gas pipeline comprises a pipeline
In the invention: the temperature of the nitrogen heated by the heater is not lower than 50 ℃.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:能防止进气管腐蚀断裂的扩散管