A packaged coupon device for buried pipeline corrosion monitoring

Abstract

The application discloses a kind of encapsulated coupon devices for buried pipeline corrosion monitoring, belong to buried pipeline corrosion monitoring technical field, including carrier, electrically conductive corrosion coupon and cable, the carrier has inner cavity, the carrier surface is equipped with the exposure hole being communicated with inner cavity, the corrosion coupon is the metal sheet of uniform thickness, and is installed in the carrier, one side is attached to the exposure hole, the carrier is equipped with anticorrosive filler covering the other side of the corrosion coupon, one end of the cable passes through the carrier, and extends into the inner cavity of the carrier, and is detachably connected with the corrosion coupon Contact. Advantage: simple and reasonable structure design, spare parts modularization, assembly fast, convenient, overall manufacturing difficulty is greatly reduced, assembly efficiency is greatly improved, in addition, the stability of product quality and the sealing condition are good, the exposed area of corrosion coupon is accurate, so that the test data of corrosion monitoring is more real and reliable.

Description

Technical Field

[0001] This invention relates to the field of buried pipeline corrosion monitoring technology, and in particular to a packaged inspection plate device for buried pipeline corrosion monitoring. Background Technology

[0002] In conducting corrosion monitoring tests on buried pipelines, to calculate corrosion rates and ensure the accuracy of test data, the inspection plates used must have a fixed exposed area. The portion outside the exposed area must be completely sealed and insulated from the soil electrolyte. Furthermore, the plates need to be cleaned and weighed before and after installation. Therefore, the inspection plates must not only ensure accurate exposed area coverage and a good seal, but also be easy to disassemble, clean, and weigh. However, existing inspection plates are mostly bare plates, plates with difficult-to-remove protective coatings, or products with easily removable protective coatings but poor sealing, resulting in poor efficiency and effectiveness in monitoring the corrosion rate of buried pipelines. There are two common encapsulation methods: The first is to connect wires by welding or drilling holes in the test piece and connecting wires by bolts on the non-test surface, and then apply epoxy resin coating or encapsulation. This encapsulation process has many problems, such as leakage, coating boundary peeling, coating failure at bolt connections, low manufacturing efficiency, and difficulty in cleaning the welding residue and coating on the connecting wires after the test. The second method is to use sealant such as 905 for sealing. Because the sealant has low strength and poor resistance to soil stress, it is easy to remove and is easily damaged during use and transportation, leading to seal failure. It is not suitable for on-site buried tests. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a packaged inspection plate device for monitoring corrosion of buried pipelines, which effectively overcomes the defects of the prior art.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] An encapsulated inspection plate device for monitoring corrosion of buried pipelines includes a carrier, a conductive corrosion inspection plate, and a cable. The carrier has an inner cavity, and the surface of the carrier has an exposure hole communicating with the inner cavity. The corrosion inspection plate is a metal sheet of uniform thickness and is installed in the carrier, with one side of the plate adhering to the exposure hole. The carrier contains an anti-corrosion filler covering the other side of the corrosion inspection plate. One end of the cable passes through the carrier and extends into the inner cavity of the carrier, making detachable contact with the corrosion inspection plate.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the aforementioned carrier includes a vertical cylindrical body and an upper cover and a lower cover that are detachably mounted on the upper and lower ends of the aforementioned cylindrical body, respectively. The lower cover has an exposure hole that extends through it from top to bottom in the middle, and one end of the aforementioned cable passes through the middle of the aforementioned upper cover.

[0008] Furthermore, the aforementioned corrosion inspection piece is sandwiched between the lower end of the aforementioned cylinder and the inner side of the aforementioned lower cover.

[0009] Furthermore, the aforementioned cylinder is a cylindrical body, and the aforementioned upper cover and lower cover are respectively set as cylindrical covers adapted to the aforementioned cylinder body.

[0010] Furthermore, the upper and lower covers are respectively threaded onto the upper and lower ends of the cylinder.

[0011] Furthermore, a sealing ring is sandwiched between the lower surface of the aforementioned corrosion inspection piece and the inner side of the aforementioned lower cover.

[0012] Furthermore, the carrier is provided with an extrusion member, which is used to press one end of the cable onto the upper surface of the corrosion inspection piece.

[0013] Furthermore, the aforementioned extrusion component is a spring, which is vertically connected between the upper cover and the upper surface of the corrosion inspection piece, and one end of the aforementioned cable is clamped between the lower end of the aforementioned spring and the upper surface of the aforementioned corrosion inspection piece.

[0014] Furthermore, the aforementioned anti-corrosion filler is a sealant.

[0015] Furthermore, the aforementioned corrosion inspection piece is an iron sheet.

[0016] The beneficial effects of this invention are: the structural design is simple and reasonable, the components are modular, the assembly is quick and convenient, the overall manufacturing difficulty is greatly reduced, the assembly efficiency is greatly improved, in addition, the product quality is stable and the sealing condition is good, the exposed area of ​​the corrosion inspection piece is accurate, making the test data of corrosion monitoring more real and reliable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the encapsulated inspection plate device for monitoring corrosion of buried pipelines according to the present invention.

[0018] Figure 2 This is a schematic diagram of another embodiment of the encapsulated inspection plate device for monitoring corrosion of buried pipelines according to the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Carrier; 2. Corrosion inspection plate; 3. Cable; 4. Corrosion-resistant filler; 5. Extruded part; 11. Cylinder; 12. Top cover; 13. Bottom cover; 21. Sealing ring. Detailed Implementation

[0021] 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.

[0022] Example: Figure 1 As shown, the encapsulated inspection plate device for monitoring corrosion of buried pipelines in this embodiment includes a carrier 1, a conductive corrosion inspection plate 2, and a cable 3. The carrier 1 has an inner cavity, and the surface of the carrier 1 is provided with an exposure hole communicating with the inner cavity. The corrosion inspection plate 2 is a metal sheet of uniform thickness and is installed in the carrier 1, with one side of it attached to the exposure hole. The carrier 1 is provided with an anti-corrosion filler 4 covering the other side of the corrosion inspection plate 2. One end of the cable 3 passes through the carrier 1 and extends into the inner cavity of the carrier 1, and is detachably connected to the corrosion inspection plate 2.

[0023] The usage process is as follows:

[0024] The cable 3 in the entire device is connected to the cable of the buried pipeline and buried near the buried pipeline. Since the corrosion inspection plate 2 is electrically connected to the cable 3, the corrosion inspection plate 2 can simulate the corrosion state of the buried pipeline underground. It can intuitively reflect the corrosion rate and corrosion morphology in the pipeline burial environment. After being buried for a period of time, the device is taken out, the corrosion inspection plate 2 is removed, the rust on the surface of the corrosion inspection plate 2 is cleaned, and it is weighed. The weight is divided by the area to calculate the thickness of the corrosion of the corrosion inspection plate 2. In the entire device, the exposed area of ​​the corrosion inspection plate 2 is the same as the area of ​​the exposed hole. The sealing performance of the entire device is also relatively good, and the sealing and protection effect of the non-exposed parts of the corrosion inspection plate 2 is excellent. Therefore, the exposed area of ​​the corrosion inspection plate 2 is accurate, and the monitoring results are very accurate, making the test data of corrosion monitoring more real and reliable. The overall structural design is simple and reasonable, the parts are modular, and the assembly is quick and convenient. The overall manufacturing difficulty is greatly reduced and the assembly efficiency is greatly improved.

[0025] In a preferred embodiment, the carrier 1 includes a vertical cylinder 11 and an upper cover 12 and a lower cover 13 that are detachably mounted on the upper and lower ends of the cylinder 11, respectively. The lower cover 13 has an exposure hole that extends through it from top to bottom in the middle, and one end of the cable 3 passes through the middle of the upper cover 12.

[0026] In the above implementation scheme, the carrier 1 adopts an assembly-type structural design, which is convenient for disassembly and assembly, and facilitates the assembly and disassembly of the corrosion inspection piece 2. It is also convenient for the initial placement of the corrosion inspection piece 2 and the subsequent disassembly and monitoring of the corrosion inspection piece 2.

[0027] In a preferred embodiment, the corrosion inspection piece 2 is sandwiched between the lower end of the cylinder 11 and the inner side of the lower cover 13.

[0028] In the above embodiment, the corrosion inspection piece 2 is sandwiched between the lower end of the cylinder 11 and the inner side of the lower cover 13. Its installation is relatively firm, which can make the corrosion inspection piece 2 tightly pressed at the exposed hole, so that the sealing at the connection between the two is better.

[0029] In a preferred embodiment, the above-mentioned cylinder 11 is a cylindrical body, and the above-mentioned upper cover 12 and lower cover 13 are respectively provided as cylindrical covers adapted to the above-mentioned cylinder 11.

[0030] In the above implementation scheme, the upper cover 12 and the lower cover 13 are cylindrical covers that are compatible with the cylinder body 11, and have the same overall appearance, making assembly between them relatively convenient.

[0031] In a preferred embodiment, the upper cover 12 and the lower cover 13 are respectively threaded onto the upper and lower ends of the cylindrical body 11.

[0032] In the above embodiment, external threads are provided on the outer side walls of the upper and lower ends of the cylinder 11, and internal threads are provided on the inner side walls of the upper cover 12 and the lower cover 13 (the upper cover 12 and the lower cover 13 are cylindrical components with one open end). The upper cover 12 and the lower cover 13 are screwed onto the upper and lower ends of the cylinder 11, respectively. The connection structure between the three is relatively simple, which can realize quick installation and quick disassembly. Moreover, after assembly, the sealing of the connection points of the three is good.

[0033] In a preferred embodiment, a sealing ring 21 is provided between the lower surface of the corrosion inspection piece 2 and the inner side of the lower cover 13.

[0034] In the above embodiment, a sealing ring 21 is used to seal the lower surface of the corrosion inspection piece 2 and the inner side of the lower cover 13. The sealing effect is better and can prevent moisture and air in the soil from entering between the corrosion inspection piece 2 and the lower cover 13, thereby preventing corrosion of the non-exposed parts of the corrosion inspection piece 2.

[0035] Generally, a groove that matches the sealing ring 21 can be made on the inner side of the lower cover 13 at the position around the exposed hole. The sealing ring 21 is embedded in the groove to achieve positioning and installation, which makes disassembly and assembly relatively convenient.

[0036] In this embodiment, the sealing ring 21 can be a rubber ring.

[0037] In this embodiment, the cylinder 11, the upper cover 12, and the lower cover 13 can be made of plastic material.

[0038] In this embodiment, a wire hole is opened in the middle of the upper cover 12 for the cable 3 to pass through. During the production process, after the cable 3 passes through the wire hole, sealant is applied to the wire hole to fix the cable 3 and seal the wire hole.

[0039] Example 2

[0040] like Figure 2 As shown, based on Embodiment 1, the carrier 1 is provided with an extrusion member 5, which is used to extrude one end of the cable 3 onto the upper surface of the corrosion inspection piece 2.

[0041] In the above implementation scheme, since a relatively accurate value of the weight of the corrosion inspection piece 2 is required during the entire underground monitoring process, welding the cable 3 to the corrosion inspection piece 2 or adding wiring terminals would affect the weight of the corrosion inspection piece 2, leading to inaccurate subsequent weighing and thickness calculations of the corrosion inspection piece 2. Therefore, in this embodiment, a contact-type detachable connection method is required between the cable 3 and the corrosion inspection piece 2. Through the setting of the extrusion member 5, the joint of the cable 3 can be pressed tightly to the non-exposed surface of the corrosion inspection piece 2 by extrusion, thereby making the cable 3 and the corrosion inspection piece 2 conductive, fully simulating the underground corrosion state of the pipeline. The entire structural design is very ingenious, ensuring that the connection of the cable 3 will not affect the subsequent top-view monitoring results of the corrosion inspection piece 2, thus improving the accuracy of underground pipeline corrosion monitoring.

[0042] In a preferred embodiment, the extrusion member 5 is a spring, which is vertically connected between the upper cover 12 and the upper surface of the corrosion inspection piece 2, and one end of the cable 3 is clamped between the lower end of the spring and the upper surface of the corrosion inspection piece 2.

[0043] In the above implementation scheme, the extrusion component 5 is a spring. The two ends of the spring are in contact with the inner side of the upper cover 12 and the upper surface of the corrosion inspection piece 2, respectively. The spring is always under pressure (compressed state) after installation. During the installation process, after stripping the metal wire end of one end of the cable 3 that is inserted into the cylinder 11, it is clamped at the connection between the spring and the corrosion inspection piece 2. The elastic force of the spring enables the corrosion inspection piece 2 and the wire end of the cable 3 to be tightly connected and conductive, and will not easily separate. After being buried underground for a period of time, the entire device is taken out, the carrier 1 is opened, the connection between the spring and the corrosion inspection piece 2 is contacted first, and then the corrosion inspection piece 2 is taken out. The top view of the corrosion inspection piece 2 can then be analyzed. The whole design is very simple, ingenious, easy to disassemble and assemble, and convenient to operate.

[0044] Of course, the extrusion piece 5 can also adopt other structural forms. Specifically, a spiral rod that passes vertically through the upper end of the upper cover 12 can be provided. The spiral rod is connected to the screw hole on the upper cover 12. An extrusion piece is provided at the lower end of the spiral rod. The cable 3 is fixed to the lower end face of the extrusion piece. By rotating the spiral rod, the extrusion piece can be pushed to contact the upper surface of the corrosion inspection piece 2, so that the wire end of the cable 3 can contact and conduct with the upper surface of the corrosion inspection piece 2.

[0045] Based on the above embodiments 1 and 2, in this embodiment, the anti-corrosion filler 4 is made of sealant. After the corrosion inspection piece 2 is installed and positioned, the sealant is filled into the carrier 1 so that the sealant fully covers the upper surface of the corrosion inspection piece 2, avoiding the view of the non-exposed parts of the corrosion inspection piece 2 during the burial process, and ensuring the accuracy of subsequent monitoring results. Since the filling of sealant is relatively simple and convenient, the whole design is very reasonable, the operation is quick and convenient, which can shorten the preparation time of the whole device and improve the work efficiency of the whole monitoring process.

[0046] Of course, in this embodiment, the anti-corrosion filler 4 can be any material that can cover the upper surface of the corrosion inspection piece 2 and prevent it from contacting the air and corroding.

[0047] In this embodiment, the corrosion inspection piece 2 can be made of conventional iron sheet. Of course, it is best to use the same material as the buried pipeline to improve the accuracy of the entire buried monitoring.

[0048] 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.

[0049] 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 technical features indicated. 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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 packaged inspection plate device for monitoring corrosion of buried pipelines, characterized in that: The device includes a carrier (1), a conductive corrosion inspection piece (2), and a cable (3). The carrier (1) has an inner cavity, and an exposure hole communicating with the inner cavity is provided on the surface of the carrier (1). The corrosion inspection piece (2) is a metal sheet of uniform thickness and is installed in the carrier (1), with one side of it attached to the exposure hole. The carrier (1) contains a corrosion-resistant filler (4) covering the other side of the corrosion inspection piece (2). One end of the cable (3) passes through the carrier (1) and extends into the inner cavity of the carrier (1), and can communicate with the corrosion inspection piece (2). The carrier (1) includes a vertical cylinder (11) and an upper cover (12) and a lower cover (13) that are detachably mounted on the upper and lower ends of the cylinder (11), respectively. The lower cover (13) has an exposure hole that runs through it from top to bottom. One end of the cable (3) passes through the middle of the upper cover (12). The corrosion inspection piece (2) is sandwiched between the lower end of the cylinder (11) and the inner side of the lower cover (13). A sealing ring (21) is sandwiched between the lower surface of the corrosion inspection piece (2) and the inner side of the lower cover (13).

2. The encapsulated inspection plate device for monitoring corrosion of buried pipelines according to claim 1, characterized in that: The cylinder (11) is a cylindrical body, and the upper cover (12) and lower cover (13) are respectively set as cylindrical covers adapted to the cylinder (11).

3. The encapsulated inspection plate device for monitoring corrosion of buried pipelines according to claim 2, characterized in that: The upper cover (12) and the lower cover (13) are respectively threaded onto the upper and lower ends of the cylinder (11).

4. The encapsulated inspection plate device for monitoring corrosion of buried pipelines according to claim 1, characterized in that: The carrier (1) is provided with an extrusion member (5), which is used to extrude one end of the cable (3) onto the upper surface of the corrosion inspection piece (2).

5. The encapsulated inspection plate device for monitoring corrosion of buried pipelines according to claim 4, characterized in that: The extrusion member (5) is a spring, which is vertically connected between the upper cover (12) and the upper surface of the corrosion inspection piece (2). One end of the cable (3) is clamped between the lower end of the spring and the upper surface of the corrosion inspection piece (2).

6. A packaged inspection plate device for monitoring corrosion of buried pipelines according to any one of claims 1 to 5, characterized in that: The anti-corrosion filler (4) is a sealant.

7. A packaged inspection plate device for monitoring corrosion of buried pipelines according to any one of claims 1 to 5, characterized in that: The corrosion inspection piece (2) is an iron sheet.

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