In-station pipeline non-transmission corrosion hanging ring monitoring device

Abstract

The utility model provides an in-station pipeline non-stop corrosion hanging ring monitoring device, which belongs to the technical field of on-line corrosion monitoring of oil field gathering and transportation pipelines and comprises a main pipeline, a bypass pipeline connected to the bottom of the main pipeline, a pipeline nipple mounted on the bypass pipeline, a vertical pipe mounted at the top of the pipeline nipple, and a tightening bolt mounted at the top of the vertical pipe. The tightening bolt is sleeved with a first polytetrafluoroethylene gasket, the first polytetrafluoroethylene gasket is located at the top of the vertical pipe, and a hanging ring assembling and disassembling device is installed in the vertical pipe. According to the utility model, two conveying lines, namely the main channel and the bypass channel, are adopted, and the two pipelines are alternately opened and closed, so that the non-transmission-stopping corrosion hanging ring monitoring can be realized, and the defect that the normal production is influenced due to the fact that the transmission must be stopped when the traditional corrosion hanging piece is taken and placed is overcome; and by arranging the hanging ring assembling and disassembling device, different parts of the inner wall of the gathering and transportation pipeline can be really simulated.

Description

Technical Field

[0001] This utility model relates to the field of online corrosion monitoring technology for oilfield gathering and transportation pipelines, specifically to a corrosion monitoring device for pipelines within a station that operates without interrupting traffic. Background Technology

[0002] After crude oil is lifted from underground to the surface, it is mainly transported through steel pipelines to booster stations, transfer stations, gathering stations, or combined processing stations. Due to the complex composition of crude oil, which may contain various corrosive media such as carbon dioxide, hydrogen sulfide, chloride ions, and bacteria, and generally has a high degree of mineralization, steel pipelines are easily corroded. Especially in the later stages of oilfield development, as the water content of crude oil continues to rise and pipeline service life extends, pipeline leakage becomes increasingly prominent, posing significant safety hazards to oilfield production and becoming one of the most pressing issues requiring attention. It is particularly important to note that the safety of pipelines within oilfield stations is crucial. However, due to the numerous tees, series connections, and intersections within these stations, internal corrosion protection is not implemented. With increasing water content, pipeline corrosion becomes severe and damage is frequent, with an average maintenance cycle of 2-3 years. Therefore, it is necessary to conduct corrosion monitoring of pipelines within stations, clarify the corrosion mechanism, and carry out targeted corrosion protection technology research.

[0003] The corrosion monitoring method using hanging rings in gathering and transportation pipelines is currently a commonly used corrosion monitoring method in oilfields, but it has certain drawbacks and is not suitable for corrosion monitoring of pipelines within stations. Patent CN201803046U provides a low-pressure pipeline corrosion hanging ring suspension device, which uses a gate valve to control the opening and closing of the device to release and place the hanging rings; Patent CN203083911U also provides a low-pressure pipeline corrosion hanging ring suspension device, which uses a valve body to control the sealing of the lower and upper parts of the hanging rings; Patent CN205665150U is a high-pressure metal pipeline corrosion hanging ring monitoring device that does not require production to operate, which uses two pistons, one vertical and one horizontal, to cooperate in sealing and opening the device to release and place the hanging rings.

[0004] In summary, the current online monitoring device for corrosion of hanging rings / plates has the following drawbacks: First, the traditional corrosion hanging rings / plates must be removed and placed, which affects normal production; second, the current device can only install one hanging ring / plate at a time, resulting in less data and the data being somewhat random; finally, the installation of the current hanging ring device requires hot work, which poses certain safety hazards. Utility Model Content

[0005] The purpose of this invention is to provide a non-stop corrosion monitoring device for pipelines within a station, overcoming the problems existing in the prior art. This invention consists of two pipelines: a main pipeline and a bypass pipeline. By alternating the opening and closing of the two pipelines, non-stop corrosion monitoring is achieved, solving the drawback of traditional corrosion clips which require stopping the operation and affecting normal production. It can realistically simulate different parts of the inner wall of the gathering and transportation pipeline. After monitoring for a certain period, the data can be retrieved and evaluated indoors to clarify the corrosion mechanism of the pipeline in different parts of the station, so as to conduct targeted protective measures research and make the data more realistic and reliable. At the same time, this clip loading and unloading device can install multiple clips / plates at one time, obtain more data, and avoid the randomness of the detection data. This device also does not require open flame operation, thus preventing the existence of safety hazards.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A non-stop corrosion monitoring device for pipelines within a station includes a main pipeline, a bypass pipeline connected to the bottom of the main pipeline, a pipeline short section installed on the bypass pipeline, a riser installed on the top of the pipeline short section, a tightening bolt installed on the top of the riser, a first polytetrafluoroethylene gasket fitted on the tightening bolt, the first polytetrafluoroethylene gasket being located at the top of the riser, and a hanging ring loading and unloading device installed inside the riser.

[0008] The main pipeline includes a first main pipeline, which is connected to one end of a first tee, the bottom of the first tee is connected to a bypass pipeline, the other end of the first tee is connected to a second main pipeline, the second main pipeline is connected to one end of a second tee, the bottom of the second tee is connected to a bypass pipeline, and the other end of the second tee is connected to a third main pipeline.

[0009] The bypass pipe includes a first bypass pipe, which is connected to a pipe short section, and the pipe short section is connected to a second bypass pipe.

[0010] Furthermore, the other end of the first tee is connected to the second main pipeline via a first gate valve, and the bottom of the first tee is connected to the bypass pipeline via a fourth gate valve.

[0011] Furthermore, one end of the second tee is connected to the second main pipeline via a second gate valve, and the bottom of the second tee is connected to the bypass pipeline via a third gate valve;

[0012] Furthermore, one end of the pipe section is connected to the first bypass pipe via a first flange, and the other end of the pipe section is connected to the second bypass pipe via a second flange.

[0013] Furthermore, a through hole is provided at the top of the pipe section, and the hanging ring loading and unloading device is installed inside the pipe section through the through hole;

[0014] Furthermore, the riser is provided with internal threads;

[0015] Furthermore, the hanging ring loading and unloading device includes a lead screw installed on the inner side of the bottom of the tightening bolt, a lead screw length adjusting nut installed on the lead screw, a second polytetrafluoroethylene gasket sleeved on the lead screw, the second polytetrafluoroethylene gasket being located below the lead screw length adjusting nut, a polytetrafluoroethylene insulating cylinder sleeved on the outer side of the bottom of the lead screw, a number of short section devices installed on the outside of the polytetrafluoroethylene insulating cylinder, a limit insulating plug installed at the bottom of the short section device, a limit pin installed on the limit insulating plug, and when in the detection state, the limit pin penetrates the lower part of the lead screw and the limit insulating plug;

[0016] Furthermore, the short section device includes an insulating short section installed outside the polytetrafluoroethylene insulating cylinder, and a hanging ring is installed at the bottom of the insulating short section;

[0017] Furthermore, the insulating short sections of the plurality of short section devices have different lengths;

[0018] Furthermore, one end of the limiting pin has a large-head ring structure, and the other end has a forked structure.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] This invention provides a non-stop corrosion monitoring device for pipelines within a station. By employing two transmission lines—a main channel and a bypass channel—and alternating switching of these two pipelines, continuous corrosion monitoring can be achieved, overcoming the drawback of traditional methods that require stopping the transmission for the placement and removal of corrosion clips, thus disrupting normal production. The bypass pipeline is sealed by using tightening bolts and a first PTFE gasket connected to the riser. The device allows for realistic simulation of different parts of the inner wall of the gathering and transmission pipeline. After a period of monitoring, the data is retrieved and evaluated indoors to clarify the corrosion mechanism of different parts of the pipeline within the station, facilitating targeted research on protective measures. The data is accurate and reliable. Furthermore, this device can install multiple clips / plates simultaneously, obtaining more data and avoiding the randomness of detection data. The device also requires no open flame operation, avoiding potential risks and ensuring the safety and reliability of the operation process.

[0021] Furthermore, by setting a first gate valve, the main channel's conveying medium can be controlled to switch on and off, and by setting a fourth gate valve, the bypass channel's conveying medium can be controlled to switch on and off.

[0022] Furthermore, by setting a second gate valve, it can be used to control the switching of the conveyed medium on the other side of the main channel, and by setting a third gate valve, it can be used to control the switching of the conveyed medium on the other side of the bypass channel.

[0023] Furthermore, the installation of a first flange and a second flange facilitates replacement or maintenance should problems arise with the mounting ring position of the monitoring device.

[0024] Furthermore, the length of the lead screw can be controlled by adjusting the nut on the lead screw; the hanging ring loading and unloading device penetrates into the interior of the bypass pipeline through the riser to realistically simulate the on-site working conditions of different parts of the pipeline inner wall, reflecting the corrosion and scaling of the pipeline inner wall. After the monitoring period, the data is retrieved to the laboratory for analysis and evaluation to clarify the corrosion mechanism of the pipeline in different parts of the station, so as to conduct targeted protection measures research.

[0025] Furthermore, the PTFE insulating sleeve ensures that the hanging rings are isolated from the lead screw, and the insulating short section separates each hanging ring, thus isolating the hanging rings from each other.

[0026] Furthermore, by setting several short-section devices with different lengths between the insulating short sections, the length can be adjusted according to the diameter of the conveying pipeline, ensuring that there are hanging rings distributed in the upper, middle and lower parts of the pipeline, thereby realistically simulating the corrosion mechanism and different characteristics of different parts of the pipeline inner wall.

[0027] Furthermore, by setting one end of the limiting pin to a large-head ring structure and the other end to a forked structure, the limiting pin can be prevented from sliding or falling off after forking to both sides, thereby ensuring a tight connection between the upper insulating pad, PTFE insulating cylinder, insulating short section, hanging ring, limiting insulating plug, etc. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the connection structure of the main pipeline, bypass pipeline, and hanging ring loading and unloading device of a non-stop corrosion hanging ring monitoring device for pipelines within a station according to this utility model.

[0029] Figure 2 This is a schematic diagram of the pipe section and the hanging ring loading and unloading device of the corrosion hanging ring monitoring device for pipelines operating without interruption in a station, according to the present invention.

[0030] Figure 3 This is a schematic diagram of the hanging ring loading and unloading device of a non-stop corrosion hanging ring monitoring device for pipelines within a station, according to the present invention.

[0031] In the diagram, 1-First main pipeline; 11-Second main pipeline; 12-Third main pipeline; 2-First tee; 3-First gate valve; 31-Second gate valve; 32-Third gate valve; 33-Fourth gate valve; 4-First bypass pipeline; 41-Second bypass pipeline; 42-First flange; 43-Second flange; 5-Second tee; 6-Tightening bolt; 61-First PTFE gasket; 62-Threaded rod; 63-Threaded rod length adjusting nut; 64-Second PTFE gasket; 65-PTFE insulating cylinder; 66-Limiting insulating plug; 67-Limiting pin; 7-Pipe section; 71-Riser; 8-Insulating section; 81-Hanging ring. Detailed Implementation

[0032] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0034] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Example 1:

[0037] like Figure 1As shown, this utility model provides a non-stop corrosion monitoring device for pipelines within a station, including a main pipeline, a bypass pipeline connected to the bottom of the main pipeline, a pipeline section 7 installed on the bypass pipeline, a riser 71 installed on the top of the pipeline section 7, a tightening bolt 6 installed on the top of the riser 71, a first polytetrafluoroethylene gasket 61 fitted on the tightening bolt 6, the first polytetrafluoroethylene gasket 61 being located at the top of the riser 71, a hanging ring loading and unloading device installed inside the riser 71, the riser 71 having internal threads, a through hole opened at the top of the pipeline section 7, the hanging ring loading and unloading device being installed inside the pipeline section 7 through the through hole; the main pipeline includes a first main pipeline 1, the first main pipeline 1 being connected to the first three One end of the first tee 2 is connected to the bypass pipe via the bottom of the first tee 2 through the fourth gate valve 33. The other end of the first tee 2 is connected to the second main pipe 11 via the first gate valve 3. The second main pipe 11 is connected to one end of the second tee 5 via the second gate valve 31. The bottom of the second tee 5 is connected to the bypass pipe via the third gate valve 32. The other end of the second tee 5 is connected to the third main pipe 12. The bypass pipe includes a first bypass pipe 4, which is connected to a pipe section 7. The pipe section 7 is connected to a second bypass pipe 41. One end of the pipe section 7 is connected to the first bypass pipe 4 via the first flange 42. The other end of the pipe section 7 is connected to the second bypass pipe 41 via the second flange 43.

[0038] like Figure 2 and Figure 3 As shown, the hanging ring loading and unloading device includes a lead screw 62 installed on the inner side of the bottom of the tightening bolt 6, a lead screw length adjusting nut 63 installed on the lead screw 62, and a second PTFE gasket 64 sleeved on the lead screw 62. The second PTFE gasket 64 is located below the lead screw length adjusting nut 63. A PTFE insulating cylinder 65 is sleeved on the outer side of the bottom of the lead screw 62. Several short section devices are installed on the outside of the PTFE insulating cylinder 65. A limiting insulating plug 66 is installed at the bottom of the short section device. A limiting pin 67 is installed on the limiting insulating plug 66. One end of the limiting pin 67 is a large-head ring structure, and the other end is a forked structure. When in the detection state, the limiting pin 67 penetrates the lower part of the lead screw 62 and the limiting insulating plug 66. The short section device includes an insulating short section 8 installed on the outside of the PTFE insulating cylinder 65. A hanging ring 81 is installed at the bottom of the insulating short section 8. The lengths of the insulating short sections 8 of the several short section devices are different.

[0039] Example 2:

[0040] This utility model provides a non-stop corrosion monitoring device for pipelines within a station, comprising a main pipeline, a bypass pipeline, a tightening bolt 6, a first PTFE gasket 61, a pipeline short section 7, a riser 71, and a hanging ring loading and unloading device; the main pipeline includes a first main pipeline 1, a second main pipeline 11, a third main pipeline 12, a first tee 2, and a second tee 5; the bypass pipeline includes a first bypass pipeline 4 and a second bypass pipeline 41; the hanging ring loading and unloading device includes a lead screw 62, a lead screw length adjusting nut 63, a second PTFE gasket 64, a PTFE insulating cylinder 65, a limiting insulating plug 66, a limiting pin 67, and a short section device; the short section device includes an insulating short section 8 and a hanging ring 81.

[0041] like Figure 1 As shown, this utility model device consists of two pipelines: a main pipeline and a bypass pipeline. By alternating the switching of these two pipelines, continuous corrosion ring monitoring is achieved, solving the drawback of traditional corrosion ring removal and removal requiring a complete shutdown of the pipeline, which disrupts normal production. The bottom of the main pipeline connects to the bypass pipeline, and a pipe section 7 is installed on the bypass pipeline. A ring loading and unloading device is installed inside the pipe section 7. The main pipeline includes a first main pipeline 1, which connects to one end of a first tee 2. The bottom of the first tee 2 is connected to the bypass pipeline via a fourth gate valve 33, which controls the switching of the bypass channel's transport medium. The other end of the first tee 2 is connected to a second main pipeline 11 via a first gate valve 3, which controls the switching of the main channel's transport medium. The second main pipeline 11 is connected to a second tee 5 via a second gate valve 31. At one end, the second gate valve 31 controls the switching of the conveying medium on the other side of the main channel. The bottom of the second tee 5 is connected to the bypass pipeline through the third gate valve 32. The third gate valve 32 is responsible for switching the conveying medium on the other side of the bypass channel. The other end of the second tee 5 is connected to the third main pipeline 12. The bypass pipeline includes a first bypass pipeline 4, which is connected to a pipeline stub 7. The pipeline stub 7 is connected to a second bypass pipeline 41. One end of the pipeline stub 7 is connected to the first bypass pipeline 4 through the first flange 42, and the other end of the pipeline stub 7 is connected to the second bypass pipeline 41 through the second flange 43. The first flange 42 and the second flange 43 are installed to prevent problems with the position of the hanging ring 81 of the monitoring device, and to facilitate replacement or maintenance. A through hole is opened at the top of the pipeline stub 7, and the hanging ring loading and unloading device is installed inside the pipeline stub 7 through the through hole.

[0042] Preferably, the diameter of the pipe section 7 is consistent with the specifications of the main pipe and the bypass pipe, and the length is 0.3~0.6 meters.

[0043] like Figure 2 and Figure 3As shown, a pipe section 7 is installed on the bypass pipe, and a riser 71 is installed on the top of the pipe section 7. A tightening bolt 6 is installed on the top of the riser 71, and a first PTFE gasket 61 is fitted on the tightening bolt 6. The first PTFE gasket 61 is located on the top of the riser 71 and is connected to the riser 71 through the tightening bolt 6 and the first PTFE gasket 61 to ensure the bypass pipe is sealed. A hanging ring loading and unloading device is installed inside the riser 71, and the riser 71 has internal threads. The hanging ring loading and unloading device penetrates into the interior of the bypass pipe through the riser 71, realistically simulating the on-site working conditions of different parts of the pipe's inner wall, and reflecting the inner wall of the pipe. Corrosion and scaling conditions will be collected and analyzed in the laboratory after the monitoring period, to clarify the corrosion mechanism of pipelines in different locations within the station, so as to conduct targeted protective measures research. The hanging ring loading and unloading device includes a screw rod 62 installed on the inner side of the bottom of the tightening bolt 6, and a screw rod length adjusting nut 63 installed on the screw rod 62. The length of the screw rod 62 is controlled by the screw rod length adjusting nut 63. A second PTFE gasket 64 is also sleeved on the screw rod 62, located below the screw rod length adjusting nut 63. A PTFE insulating sleeve 65 is sleeved on the outer side of the bottom of the screw rod 62. Several short-section devices are installed on the outside of the insulating cylinder 65. The PTFE insulating cylinder 65 ensures insulation between the hanging ring 81 and the lead screw 62. The insulating short sections 8 separate each hanging ring 81, making the hanging rings 81 isolated from each other. A limiting insulating plug 66 is installed at the bottom of the short-section device. A limiting pin 67 is installed on the limiting insulating plug 66. One end of the limiting pin 67 is a large-head ring structure, and the other end is a forked structure. After forking to both sides, it can ensure that the limiting pin 67 does not slip or fall off, thereby ensuring that the upper insulating gasket, PTFE insulating cylinder 65, insulating short section 8, hanging ring 81, limiting insulating plug 66, etc. are in place. The connection is tight; when in the detection state, the limiting pin 67 passes through the lower part of the screw 62 and the limiting insulating plug 66, and several short section devices and the limiting insulating plug 66 are also located inside the riser 71; the short section device includes an insulating short section 8 installed outside the polytetrafluoroethylene insulating cylinder 65, and a hanging ring 81 is installed at the bottom of the insulating short section 8. The lengths of the insulating short sections 8 of several short section devices are different, and the length can be adjusted according to the diameter of the conveying pipeline to ensure that there are hanging rings 81 distributed in the upper, middle and lower parts of the pipeline, thereby truly simulating the corrosion mechanism and different characteristics of different parts of the inner wall of the pipeline;

[0044] Preferably, the riser 71 is welded to the top of the pipe section 7 through a through hole;

[0045] Preferably, the screw rod 62 is installed on the inner side of the bottom of the tightening bolt 6 by thread, and the screw rod 62 is made of stainless steel or carbon steel;

[0046] Preferably, the outer diameter of the PTFE insulating cylinder 65 is smaller than the inner diameter of the insulating stub 8;

[0047] Preferably, through holes are provided on both sides of the limiting pin 67, and through holes are also provided on both sides of the bottom of the lead screw 62. The direction of the through holes is ensured to be connected. The limiting pin 67 passes through the through holes to penetrate the lower part of the lead screw 62 and the limiting insulating plug 66.

[0048] Preferably, the insulating gasket, PTFE insulating cylinder 65, insulating short section 8, limiting insulating plug 66, etc. are all made of PTFE to ensure insulation between the lead screw 62, hanging ring 81 and limiting pin 67, and to prevent galvanic corrosion.

[0049] Example 3:

[0050] like Figure 1 , Figure 2 and Figure 3 As shown, the purpose of this utility model is to provide a corrosion monitoring device for pipelines within a station without interrupting operation. When assembling the device, the lower part of the tightening bolt 6 is first connected to the lead screw 62 via threads, and the length of the lead screw 62 is controlled by the lead screw length adjusting nut 63. After the lead screw 62 is connected to the tightening bolt 6, the second PTFE gasket 64 is first inserted, and then a PTFE insulating cylinder 65 is inserted onto the lead screw 62. The outer diameter of the PTFE insulating cylinder 65 is smaller than the inner diameter of the insulating short section 8 and the hanging ring 81. The insulating short section 8 and the hanging ring 81 are sequentially inserted onto the PTFE insulating cylinder 65, with the insulating short section 8 and the hanging ring 81 arranged alternately. The device is monitored by the flow of the insulating short section 8... The length controls the position of the hanging ring 81 in the pipeline; the hanging ring 81 at the bottom of the hanging ring loading and unloading device is connected to the limiting insulating plug 66. The limiting insulating plug 66 has a through hole, and the bottom of the screw rod 62 also has a through hole. The two through holes are adjusted to be connected, and the limiting pin 67 passes through. One end of the limiting pin 67 is a large-head ring structure, and the other end is a forked design to ensure that the limiting pin 67 does not slip or fall off. This ensures that the insulating gasket, PTFE insulating cylinder 65, insulating short section 8, hanging ring 81, limiting insulating plug 66 and other components are assembled from top to bottom. The assembled hanging ring loading and unloading device is connected to the tightening bolt 6 through the thread on the upper part of the screw rod 62.

[0051] During assembly, first tighten and close the third gate valve 32 and the fourth gate valve 33, while keeping the first gate valve 3 and the second gate valve 31 open to ensure that the conveying medium is conveyed normally from the main channel. Then, connect the assembled hanging ring loading and unloading device to the riser 71 through the upper tightening bolt 6 and the first PTFE gasket 61 to seal it and ensure that the bypass pipeline is sealed and leak-free. Then, open the third gate valve 32 and the fourth gate valve 33, close the first gate valve 3 and the second gate valve 31, and let the conveying medium flow through the bypass. Record the time when monitoring begins.

[0052] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A corrosion monitoring device for pipelines operating without interruption, characterized in that, Includes a main pipe, a bypass pipe connected to the bottom of the main pipe, a pipe section (7) installed on the bypass pipe, a riser (71) installed on the top of the pipe section (7), a tightening bolt (6) installed on the top of the riser (71), a first polytetrafluoroethylene gasket (61) fitted on the tightening bolt (6), the first polytetrafluoroethylene gasket (61) located on the top of the riser (71), and a hanging ring loading and unloading device installed inside the riser (71); The main pipeline includes a first main pipeline (1), which is connected to one end of a first tee (2). The bottom of the first tee (2) is connected to a bypass pipeline, and the other end of the first tee (2) is connected to a second main pipeline (11). The second main pipeline (11) is connected to one end of a second tee (5), and the bottom of the second tee (5) is connected to a bypass pipeline. The other end of the second tee (5) is connected to a third main pipeline (12). The bypass pipeline includes a first bypass pipeline (4), which is connected to a pipeline section (7), and the pipeline section (7) is connected to a second bypass pipeline (41).

2. The in-station pipeline corrosion monitoring device with hanging ring according to claim 1, characterized in that, The other end of the first tee (2) is connected to the second main pipe (11) through the first gate valve (3), and the bottom of the first tee (2) is connected to the bypass pipe through the fourth gate valve (33).

3. The in-station pipeline corrosion monitoring device with hanging ring according to claim 1, characterized in that, One end of the second tee (5) is connected to the second main pipe (11) through the second gate valve (31), and the bottom of the second tee (5) is connected to the bypass pipe through the third gate valve (32).

4. The in-station pipeline corrosion monitoring device with hanging ring according to claim 1, characterized in that, One end of the pipe section (7) is connected to the first bypass pipe (4) via the first flange (42), and the other end of the pipe section (7) is connected to the second bypass pipe (41) via the second flange (43).

5. The in-station pipeline corrosion monitoring device according to claim 1, characterized in that, The top of the pipe section (7) is provided with a through hole, and the hanging ring loading and unloading device is installed inside the pipe section (7) through the through hole.

6. The in-station pipeline corrosion monitoring device according to claim 1, characterized in that, The riser (71) is provided with internal threads.

7. The in-station pipeline corrosion monitoring device according to claim 1, characterized in that, The hanging ring loading and unloading device includes a screw rod (62) installed on the inner side of the bottom of the tightening bolt (6), a screw rod length adjusting nut (63) installed on the screw rod (62), a second polytetrafluoroethylene gasket (64) also sleeved on the screw rod (62), the second polytetrafluoroethylene gasket (64) is located at the lower part of the screw rod length adjusting nut (63), a polytetrafluoroethylene insulating cylinder (65) is sleeved on the outer side of the bottom of the screw rod (62), a number of short section devices are installed on the outside of the polytetrafluoroethylene insulating cylinder (65), a limit insulating plug (66) is installed at the bottom of the short section device, and a limit pin (67) is installed on the limit insulating plug (66). When in the detection state, the limit pin (67) penetrates the lower part of the screw rod (62) and the limit insulating plug (66).

8. The in-station pipeline corrosion monitoring device according to claim 7, characterized in that, The short section device includes an insulating short section (8) installed outside the polytetrafluoroethylene insulating cylinder (65), and a hanging ring (81) is installed at the bottom of the insulating short section (8).

9. A non-stop corrosion monitoring device for pipelines within a station according to claim 7, characterized in that, The insulating short sections (8) of the plurality of short section devices have different lengths.

10. A non-stop corrosion monitoring device for pipelines within a station according to claim 7, characterized in that, One end of the limiting pin (67) is a large-head ring structure, and the other end is a forked structure.

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