A device for cathodic protection and external corrosion monitoring of a natural gas pipeline

Abstract

This invention relates to a cathodic protection and external corrosion monitoring device for natural gas pipelines, comprising a monitoring probe, pipeline fasteners, a base plate, a top plate, and locking components. The pipeline fasteners are used to fix the device to the natural gas pipeline. The base plate is horizontally installed on the upper end of the pipeline fasteners, and the top plate is horizontally installed on the upper end of the monitoring probe. Parallel baffles are provided on both sides of the upper end of the base plate. The monitoring probe is placed on the upper end of the base plate, positioned between the baffles on both sides. The locking components are detachably connected to the baffles and the top plate, used to lock the baffles and the top plate in place. Advantages: The structure is simple and reasonable, allowing for quick disassembly of the monitoring probe and providing positioning during installation. This avoids the problem of users having to remove numerous bolts one by one when the monitoring probe needs to be replaced, improving the efficiency of probe replacement, saving time and effort, and increasing the accuracy of the monitoring probe's pipeline monitoring data.

Description

Technical Field

[0001] This invention relates to the field of pipeline monitoring technology, and in particular to a cathodic protection and external corrosion monitoring device for natural gas pipelines. Background Technology

[0002] Cathodic protection is a type of electrochemical protection technology. Its principle involves applying an external current to the surface of a corroded metal structure, making the protected structure the cathode. This inhibits electron migration that causes metal corrosion, thus preventing or reducing corrosion. Cathodic protection devices are commonly used for the protection of natural gas pipelines. To facilitate monitoring of natural gas pipelines, monitoring probes are typically installed on the pipeline within the monitoring device, enabling real-time monitoring of pipeline conditions.

[0003] Chinese patent CN205688015U discloses a probe for monitoring the cathodic protection and external corrosion rate of pipelines. The probe includes a current connection wire and a voltage connection wire connected to the corroded section. A reference section voltage connection wire and a common connection wire for measuring the voltage of the reference and corroded sections are also connected to measure the voltage of the reference section test piece. The current is measured by connecting the reference and corroded section current connection wires. The corrosion rate of the pipeline can then be monitored using a resistance method. While this probe solves the problem of pipeline corrosion monitoring, in practical use, to ensure real-time monitoring, it is generally fixed to the pipeline. This installation requires numerous bolts and regular maintenance. When the probe needs replacement, the user must remove all the bolts, reducing the efficiency of replacement and making it time-consuming and labor-intensive.

[0004] To address the aforementioned issues, this application proposes a cathodic protection and external corrosion monitoring device for natural gas pipelines. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a cathodic protection and external corrosion monitoring device for natural gas pipelines, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] A cathodic protection and external corrosion monitoring device for natural gas pipelines includes a monitoring probe, pipeline fasteners, a base plate, a top plate, and a locking component. The pipeline fasteners are used to fix the pipeline to the natural gas pipeline. The base plate is horizontally installed on the upper end of the pipeline fasteners, and the top plate is horizontally installed on the upper end of the monitoring probe. Parallel baffles are provided on both sides of the upper end of the base plate. The monitoring probe is placed on the upper end of the base plate and located between the baffles on both sides. The locking component is detachably connected to the baffles and the top plate and is used to lock the baffles and the top plate.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the aforementioned locking member has two sides and is distributed on both sides of the aforementioned top plate. The two sets of the aforementioned locking members are respectively used to lock the side end of the aforementioned top plate and the aforementioned baffle on the corresponding side.

[0010] Furthermore, the lower ends of the middle of both sides of the top plate are respectively provided with connecting posts, and the lower ends of the connecting posts are respectively provided with downwardly extending positioning posts. The two baffles are respectively provided with connecting blocks corresponding to the two positioning posts on the opposite sides. The upper end of the connecting block is provided with an insertion hole adapted to the positioning post. The lower end of the positioning post is inserted into the corresponding insertion hole of the connecting block and locked to the connecting block by the locking member.

[0011] Furthermore, the connecting block is slidably mounted on the upper end of the base plate and can slide in a direction perpendicular to the baffle. The connecting block has threaded holes through both ends, and the threaded holes pass through the insertion hole. The lower end of the positioning post has positioning holes through both sides. The locking member is a bolt adapted to the threaded holes. When the lower end of the positioning post is inserted into the insertion hole, the locking member passes through the threaded holes and positioning holes and is threadedly connected to the baffle on the corresponding side.

[0012] Furthermore, a base is fixed to the middle of the side of the two baffles that are relatively far apart. Multiple horizontal connecting plates are fixed to the outer surface of the base. The multiple connecting plates are distributed at intervals. One end of the connecting block is provided with multiple connecting grooves that correspond one-to-one with the connecting plates. The connecting plates extend into the corresponding connecting grooves.

[0013] Furthermore, one end of the aforementioned connecting block is connected to the corresponding baffle via an elastic element.

[0014] Furthermore, the aforementioned elastic element is a spring, and one end of the aforementioned connecting block is provided with a blind hole with a diameter larger than that of the aforementioned screw hole. The blind hole and the aforementioned screw hole are coaxially distributed. One end of the aforementioned elastic element is connected to the aforementioned baffle on the corresponding side, and its other end extends into the aforementioned blind hole.

[0015] Furthermore, the aforementioned positioning posts all extend downwards at an angle toward the outer side of the aforementioned baffle on the corresponding side, and the corresponding insertion holes are oblique holes adapted to the aforementioned positioning posts.

[0016] Furthermore, the monitoring probe is equipped with limiting protection structures on both sides to prevent it from shifting.

[0017] Furthermore, the aforementioned limiting protection structure includes limiting protrusions vertically disposed in the middle of both sides of the monitoring probe, and vertically extending limiting grooves are respectively provided in the middle of the side of the baffles on both sides that are close to each other, and the limiting protrusions are respectively embedded in the limiting grooves on the corresponding sides.

[0018] The beneficial effects of this invention are: the structural design is simple and reasonable, allowing for quick disassembly of the monitoring probe and positioning of the probe during installation. This avoids the problem of users having to remove a large number of bolts one by one when the monitoring probe needs to be replaced, thus improving the efficiency of the user in replacing the monitoring probe, saving time and effort, and increasing the accuracy of the monitoring probe in monitoring pipeline data. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the cathodic protection and external corrosion monitoring device for natural gas pipelines according to the present invention, installed on the pipeline.

[0020] Figure 2 This is a schematic diagram of the assembly structure of the monitoring probe in the cathodic protection and external corrosion monitoring device for natural gas pipelines of the present invention;

[0021] Figure 3 This is a schematic diagram of the layout structure of the connecting block and the baffle in the cathodic protection and external corrosion monitoring device for natural gas pipelines of the present invention.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Monitoring probe; 2. Pipe fasteners; 3. Locking components; 11. Limiting protection structure; 21. Base plate; 22. Top plate; 23. Baffle; 24. Connecting column; 25. Positioning column; 26. Connecting block; 27. Base; 231. Limiting groove; 251. Positioning hole; 261. Insertion hole; 262. Screw hole; 263. Connecting groove; 264. Elastic component; 271. Connecting plate. Detailed Implementation

[0024] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0025] Example: Figure 1As shown, the cathodic protection and external corrosion monitoring device for natural gas pipelines in this embodiment includes a monitoring probe 1, a pipeline fastener 2, a base plate 21, a top plate 22, and a locking member 3. The pipeline fastener 2 is used to fix the device to the natural gas pipeline. The base plate 21 is horizontally installed on the upper end of the pipeline fastener 2. The top plate 22 is horizontally installed on the upper end of the monitoring probe 1. The upper ends of the base plate 21 are respectively provided with mutually parallel baffles 23. The monitoring probe 1 is placed on the upper end of the base plate 21 and is located between the baffles 23 on both sides. The locking member 3 is detachably connected to the baffles 23 and the top plate 22 and is used to lock the baffles 23 and the top plate 22.

[0026] In practical use, the pipe fastener 2 is fixed to the part of the natural gas pipeline to be inspected. Then, the base plate 21 is fixed to the upper end of the pipe fastener 2 (the two can also be pre-assembled together). The monitoring probe 1 is pre-installed on the lower end of the top plate 22. Then, the monitoring probe 1 is placed between the two side baffles 23 on the upper end of the base plate 21. Then, the side end of the top plate 22 is quickly connected to the baffle 23 by the locking piece 3, thus realizing the installation of the entire monitoring probe 1. When routine maintenance is required (or when the monitoring probe 1 needs to be removed), simply operate the locking piece 3 to quickly unlock the baffle 23 and the top plate 22. The entire device has a simple and reasonable structural design, which allows for quick disassembly of the monitoring probe and also provides positioning for the monitoring probe during installation. This avoids the problem of users having to remove a large number of bolts one by one when the monitoring probe needs to be replaced, improving the efficiency of the user in replacing the monitoring probe, saving time and effort, and increasing the accuracy of the monitoring probe in monitoring pipeline data.

[0027] In this embodiment, the pipe fastener 2 can be a ring-shaped component that is compatible with the pipe diameter. The ring-shaped component can be composed of two semi-circular rings that are spliced ​​together and tightened on the outer surface of the pipe to be tested.

[0028] In a preferred embodiment, the locking member 3 has two sides and is distributed on both sides of the top plate 22. The two sets of locking members 3 are used to lock the side end of the top plate 22 and the corresponding side baffle 23.

[0029] In the above implementation scheme, a set of locking parts 3 on each side of the top plate 22 is used to quickly detach and install the corresponding side baffle 23, which makes the installation relatively stable and secure.

[0030] As a preferred implementation method, such as Figure 2As shown, the lower ends of the middle of both sides of the top plate 22 are respectively provided with connecting posts 24, and the lower ends of the connecting posts 24 are respectively provided with downwardly extending positioning posts 25. The two baffles 23 are respectively provided with connecting blocks 26 corresponding to the two positioning posts 25 on the opposite sides. The upper end of the connecting block 26 is provided with an insertion hole 261 adapted to the positioning post 25. The lower end of the positioning post 25 is inserted into the corresponding insertion hole 261 of the connecting block 26, and is locked to the connecting block 26 by the locking member 3.

[0031] In the above implementation scheme, during installation, the lower end of the positioning post 25 is inserted into the insertion hole 261 of the connecting block 26 on the outer side of the baffle 23 on the corresponding side, and then the positioning post 25 and the baffle 23 are quickly locked together by the locking member 3. Through the cooperation between the insertion hole 261 and the positioning post 25, the installation of the top plate 22 can be accurately positioned and installed.

[0032] As a preferred implementation method, such as Figure 3 As shown, the connecting block 26 is slidably mounted on the upper end of the base plate 21 and can slide in a direction perpendicular to the baffle 23. The connecting block 26 has screw holes 262 that pass through both ends of it. The screw holes 262 pass through the insertion hole 261. The lower end of the positioning post 25 has positioning holes 251 that pass through both sides. The locking member 3 is a bolt that is adapted to the screw holes 262. When the lower end of the positioning post 25 is inserted into the insertion hole 261, the locking member 3 is used to pass through the screw holes 262 and the positioning holes 251 and is threadedly connected to the baffle 23 on the corresponding side.

[0033] In the above implementation scheme, the locking component 3 is in the removed state before assembly. The position of the connecting block 26 is adjusted so that the lower end of the positioning post 25 at the lower end of the corresponding side of the top plate 22 can be inserted into the insertion hole 261 of the connecting block 26 on the corresponding side. After the two are inserted into place, the locking component 3 is installed from the end of the connecting block 26 away from the baffle 23. The locking component 3 is screwed along the screw hole 262. The screw of the locking component 3 passes through the positioning hole 251 at the lower end of the positioning post 25, and then passes through the end of the connecting block 26 near the baffle 23 and is threadedly connected to the baffle 23. This achieves stable fixation of the connecting block 26. At the same time, the positioning post 25 and the insertion hole 261 are well locked and fixed by the locking component 3. When disassembling, the locking component 3 is screwed out in the reverse direction and the positioning post 25 is pulled out to disassemble. That is, the entire disassembly and assembly process only requires the positioning post 25 to be inserted into the insertion hole 261 and the locking component 3 to be screwed in the screw hole 262, which is very quick.

[0034] In a preferred embodiment, a base 27 is fixed at the middle of the side of the two baffles 23 that are relatively far apart. A plurality of horizontal connecting plates 271 are fixed on the outer surface of the base 27. The plurality of connecting plates 271 are distributed vertically at intervals. One end of the connecting block 26 is provided with a plurality of connecting grooves 263 that correspond one-to-one with the connecting plates 271. The connecting plates 271 extend into the corresponding connecting grooves 263 respectively.

[0035] In the above implementation scheme, one end of the connecting block 26 is inserted into and slides relative to the connecting groove 263 on the outside of the baffle 23 through the connecting plate 271, thereby limiting the movement direction of the connecting block 26, so that the connecting block 26 can move and adjust well along the direction of approaching or moving away from the baffle 23.

[0036] In this embodiment, a recessed mounting groove is provided on the outer side of the baffle 23, and the base 27 is vertically fitted and fixed to the bottom of the mounting groove. A locking screw hole adapted to the locking member 3 is provided at the bottom of the mounting groove so that the rod of the locking member 3 can be threadedly connected to the locking screw hole on the baffle 23 after passing through the connecting block 26.

[0037] In a preferred embodiment, one end of the connecting block 26 is connected to the baffle 23 on the corresponding side via an elastic member 264.

[0038] In the above implementation scheme, after the positioning pin 25 is inserted into the insertion hole 261, the elastic element 264 is in a compressed state, which will give the connecting block 26 a reverse thrust, thereby making the insertion hole 261 and the lower end of the positioning pin 25 fit tightly. Then, the positioning pin 25 and the insertion hole 261 are locked through the through hole of the locking element 3 to achieve a tight lock between them.

[0039] In a preferred embodiment, the elastic element 264 is a spring, and one end of the connecting block 26 is provided with a blind hole (a in the figure) with a diameter larger than that of the screw hole 262. The blind hole and the screw hole 262 are coaxially distributed. One end of the elastic element 264 is connected to the baffle 23 on the corresponding side, and the other end extends into the blind hole.

[0040] In the above implementation scheme, the elastic element 264 adopts a conventional spring. A section of the screw hole at one end of the connecting block 26 is enlarged to form a blind hole. One end of the spring is inserted into the blind hole, which plays a certain limiting role for the spring, so that the spring is stably assembled and has good force.

[0041] In a preferred embodiment, the positioning posts 25 all extend downward at an angle toward the outer side of the baffle 23 on the corresponding side, and the corresponding insertion hole 261 is an oblique hole adapted to the positioning post 25.

[0042] In the above implementation scheme, since the insertion hole 261 is an oblique hole and the positioning post 25 is also inclined (facing the outside of the baffle 23), when the locking member 3 is removed and the positioning post 25 is pulled out upward, the elastic member 264 restores its deformation and gives the connecting block 26 a thrust that moves away from the baffle 23, so that the positioning post 25 can be "squeezed out" upward by the insertion hole 261 to a certain extent, which is more conducive to the pulling out process of the positioning post 25.

[0043] In a preferred embodiment, the monitoring probe 1 is provided with limiting protection structures 11 on both sides to prevent it from shifting.

[0044] In the above implementation scheme, the limiting protection structure 11 can effectively limit the monitoring probe 1 during the disassembly and assembly process, prevent the monitoring probe 1 from shifting towards the two ends of the top plate 22 or the bottom plate 21, prevent the monitoring probe 1 from shifting position during disassembly and assembly and causing wear, and increase the service life of the monitoring probe 1.

[0045] In a preferred embodiment, the limiting protection structure 11 includes limiting protrusions vertically disposed in the middle of both sides of the monitoring probe 1. The baffles 23 on both sides are provided with vertically extending limiting grooves 231 in the middle of the side that are close to each other. The limiting protrusions are respectively embedded in the limiting grooves 231 on the corresponding side.

[0046] In the above implementation scheme, when the monitoring probe 1 is being disassembled or assembled, as the monitoring probe 1 moves (up and down) between the two baffles 23, the monitoring probe 1 moves and drives the limiting protrusion to move within the limiting slide groove 231. The sliding between the limiting protrusion and the limiting slide groove 231 can play a positioning and guiding role for the limiting protrusion, preventing the limiting protrusion from sliding horizontally when moving within the limiting slide groove 231. This increases the stability of the limiting slide groove 231 during movement. Moreover, the limiting slide groove 231 is used to limit the monitoring probe 1, preventing the monitoring probe 1 from shifting horizontally during movement, thereby effectively protecting the monitoring probe 1.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cathodic protection and external corrosion monitoring device for natural gas pipelines, characterized in that: The system includes a monitoring probe (1), a pipe fastener (2), a base plate (21), a top plate (22), and a locking component (3). The pipe fastener (2) is used to fix the system to the natural gas pipeline. The base plate (21) is horizontally installed on the upper end of the pipe fastener (2), and the top plate (22) is horizontally installed on the upper end of the monitoring probe (1). The upper end of the base plate (21) is provided with parallel baffles (23) on both sides. The monitoring probe (1) is placed on the upper end of the base plate (21) and located between the baffles (23) on both sides. The locking component (3) is detachably connected to the baffles (23) and the top plate (22) and is used to lock the baffles (23) and the top plate (22). The locking component (3) has two sides and is distributed on the... On both sides of the top plate (22), two sets of locking members (3) are used to lock the side end of the top plate (22) and the corresponding side baffle (23). The lower end of the middle part of both sides of the top plate (22) is provided with connecting post (24). The lower end of the connecting post (24) is provided with a downwardly extending positioning post (25). The side of the two baffles (23) that are far apart from each other is provided with a connecting block (26) that corresponds to the two positioning posts (25). The upper end of the connecting block (26) is provided with a socket (261) that is adapted to the positioning post (25). The lower end of the positioning post (25) is inserted into the socket (261) of the corresponding connecting block (26) and locked with the connecting block (26) by the locking member (3).

2. The cathodic protection and external corrosion monitoring device for natural gas pipelines according to claim 1, characterized in that: The connecting block (26) is slidably mounted on the upper end of the base plate (21) and can slide in a direction perpendicular to the baffle (23). The connecting block (26) has a screw hole (262) that passes through both ends of it. The screw hole (262) passes through the insertion hole (261). The lower end of the positioning post (25) has a positioning hole (251) that passes through both sides. The locking member (3) is a bolt that is adapted to the screw hole (262). When the lower end of the positioning post (25) is inserted into the insertion hole (261), the locking member (3) is used to pass through the screw hole (262) and the positioning hole (251) and is threadedly connected to the baffle (23) on the corresponding side.

3. The cathodic protection and external corrosion monitoring device for natural gas pipelines according to claim 2, characterized in that: A base (27) is fixed at the middle of the side of the two baffles (23) that are relatively far apart. A plurality of horizontal connecting plates (271) are fixed on the outer surface of the base (27). The plurality of connecting plates (271) are distributed vertically at intervals. One end of the connecting block (26) is provided with a plurality of connecting grooves (263) that correspond one-to-one with the connecting plates (271). The connecting plates (271) extend into the corresponding connecting grooves (263).

4. The cathodic protection and external corrosion monitoring device for natural gas pipelines according to claim 3, characterized in that: One end of the connecting block (26) is connected to the baffle (23) on the corresponding side via an elastic element (264).

5. The cathodic protection and external corrosion monitoring device for natural gas pipelines according to claim 4, characterized in that: The elastic element (264) is a spring. One end of the connecting block (26) is provided with a blind hole with a diameter larger than that of the screw hole (262). The blind hole is coaxially distributed with the screw hole (262). One end of the elastic element (264) is connected to the baffle (23) on the corresponding side, and the other end of the elastic element (264) extends into the blind hole.

6. The cathodic protection and external corrosion monitoring device for natural gas pipelines according to claim 4, characterized in that: The positioning posts (25) all extend downward at an angle toward the outside of the baffle (23) on the corresponding side, and the corresponding insertion holes (261) are oblique holes adapted to the positioning posts (25).

7. The cathodic protection and external corrosion monitoring device for natural gas pipelines according to claim 1, characterized in that: The monitoring probe (1) is provided with limiting protection structures (11) on both sides to prevent it from shifting.

8. The cathodic protection and external corrosion monitoring device for natural gas pipelines according to claim 7, characterized in that: The limiting protection structure (11) includes limiting protrusions vertically arranged in the middle of both sides of the monitoring probe (1). The baffles (23) on both sides are respectively provided with vertically extending limiting grooves (231) in the middle of the side that are close to each other. The limiting protrusions are respectively embedded in the limiting grooves (231) on the corresponding side.

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