A negative hold test pile

Abstract

The application discloses a cathodic protection test pile and relates to the technical field of cathodic protection system test devices. The cathodic protection test pile comprises a pre-buried pile body and a working pile body which are detachably connected, the lower end of the pre-buried pile body is buried in the ground, the upper end of the pre-buried pile body is flush with the ground, the working pile body is detachably installed on the upper end of the pre-buried pile body, and a test module is arranged on the working pile body and used for monitoring a pipeline to be measured. The cathodic protection test pile can improve the maintenance convenience.

Description

Technical Field

[0001] This application relates to the technical field of cathodic protection system testing devices, and more specifically, to a cathodic protection test post. Background Technology

[0002] To mitigate the impact of external corrosion on long-distance oil and gas pipelines and ensure their safe and reliable operation, relevant domestic and international standards have mandated that all completed and operational pipelines must be equipped with appropriate cathodic protection systems. Even during construction or the pre-construction phase, temporary cathodic protection measures must be considered. After pipeline commissioning, regular monitoring of the cathodic protection system's operation is necessary to ensure its proper functioning. Furthermore, to improve the accuracy and timeliness of monitoring data and reduce manual monitoring costs, intelligent cathodic protection test piles are typically installed along the pipeline route to collect and upload cathodic protection data to a server at regular intervals.

[0003] In existing technologies, intelligent cathodic protection test piles all adopt an integrated structure of underground and above-ground sections, with the pile body from the underground buried end to the top communication antenna being an inseparable single unit. While this structure can guarantee the initial mechanical strength of the pile body, most failures occur in the above-ground section during pile operation: these include aging and damage to the communication antenna, test circuit failures, damage to the above-ground pile body from vehicle collisions, corrosion, and breakage. However, because the underground and above-ground sections are an inseparable single structure, even if the underground section is intact, the foundation pit must be excavated again and the entire pile body must be lifted out before replacement can be performed. Summary of the Invention

[0004] The purpose of this application is to provide a cathodic protection test post that improves the ease of maintenance of the cathodic protection test post.

[0005] The embodiments of this application are implemented as follows: This application provides a cathodic protection test pile, including a pre-embedded pile body and a working pile body that are detachably connected. The lower end of the pre-embedded pile body is buried underground, and the upper end is flush with the ground. The working pile body is detachably installed on the upper end of the pre-embedded pile body. A test module is provided on the working pile body, and the test module monitors the pipeline under test.

[0006] Optionally, as an implementable method, the working pile body includes a middle pile body and a top pile body, the test module includes a test circuit and a communication antenna electrically connected to the test circuit, the test circuit is disposed in the accommodating cavity of the middle pile body, and the communication antenna is disposed in the top pile body.

[0007] Optionally, as an implementable method, a second connecting flange and a third connecting flange are provided on both sides of the middle pile body, the pre-embedded pile body is provided with a first connecting flange connected to the second connecting flange, and the top pile body is provided with a fourth connecting flange connected to the third connecting flange.

[0008] Optionally, as an implementable method, the first connecting flange is provided with a plurality of connecting bolts on the side facing the central pile body, and the second connecting flange is provided with a plurality of connecting holes corresponding one-to-one with the connecting bolts, and the connecting bolts and the connecting holes are inserted into each other.

[0009] Alternatively, as an implementable method, the outer diameters of the embedded pile, the middle pile, and the top pile gradually decrease.

[0010] Optionally, as one possible implementation, the test circuit includes a data acquisition device, a central control device, and a battery, wherein the data acquisition device, the antenna, and the battery are all electrically connected to the central control device.

[0011] Optionally, as an implementable method, the top pile body includes a connecting part, a guiding part, and a mounting part, the fourth connecting flange is disposed in the connecting part, the antenna is disposed in the mounting part, the side wall of the mounting part is provided with a mounting through hole, and the transmitting and receiving ends of the antenna are exposed in the mounting through hole.

[0012] Alternatively, as an implementable method, the guide portion is a guide slope used to guide rainwater to slide off.

[0013] Optionally, as an implementable method, a sealing and insulation layer is provided in the accommodating cavity.

[0014] Optionally, as an implementable method, a pile gate is provided on the central pile body, and a sealing ring is provided on the inner side of the pile gate.

[0015] The beneficial effects of the embodiments of this application include: The cathodic protection test pile provided in this application includes a detachably connected pre-embedded pile body and a working pile body. The lower end of the pre-embedded pile body is buried underground, and the upper end is flush with the ground. The working pile body is detachably installed on the upper end of the pre-embedded pile body, and a test module is installed on the working pile body to monitor the pipeline under test. This design separates the traditional integrated cathodic protection test pile into two independent parts: the pre-embedded pile body and the working pile body. The underground pre-embedded part can be used for a long time after a one-time construction, while the above-ground working part can be disassembled independently. When common faults such as communication antenna damage, circuit failure, or collision damage occur in the above-ground section, there is no need to excavate the foundation pit again or remove the entire pile body, significantly reducing maintenance difficulty and workload. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the cathodic protection test pile provided in the embodiment of this application.

[0018] Icons: 100 - Cathodic protection test pile; 110 - Embedded pile body; 111 - First connecting flange; 120 - Working pile body; 121 - Middle pile body; 1211 - Second connecting flange; 1212 - Third connecting flange; 122 - Top pile body; 1221 - Fourth connecting flange; 130 - Test module; 131 - Test circuit; 132 - Communication antenna. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Please refer to Figure 1 This embodiment provides a cathode protection test pile 100, which includes a pre-embedded pile body 110 and a working pile body 120 that can be detachably connected. The lower end of the pre-embedded pile body 110 is buried underground, and the upper end is flush with the ground. The working pile body 120 is detachably installed on the upper end of the pre-embedded pile body 110. A test module 130 is provided on the working pile body 120, and the test module 130 monitors the pipeline under test.

[0024] Specifically, when assembling the cathodic protection test pile 100 of this application, a foundation pit is excavated at the selected test location along the long-distance oil and gas pipeline. The pre-embedded pile body 110 is vertically placed into the foundation pit, and its verticality is adjusted so that the upper end face of the pre-embedded pile body 110 is completely flush with the ground. Then, the soil around the foundation pit is backfilled and compacted to complete the fixed installation of the pre-embedded pile body 110. A test cable connected to the cathodic protection system of the pipeline under test is pre-threaded inside the pre-embedded pile body 110, and the upper end of the test cable is led out from the upper end face of the pre-embedded pile body 110. The test module 130 is pre-installed inside the working pile body 120 and electrically connected. Then, the working pile body 120 is hoisted as a whole to the upper end of the pre-embedded pile body 110, and the working pile body 120 and the pre-embedded pile body 110 are fastened together by a detachable connection structure. At the same time, the test cable led out from the pre-embedded pile body 110 is reliably connected to the corresponding terminal of the test module 130 inside the working pile body 120. Connect the power supply to the test module 130, check whether the communication connection between the test module 130 and the pipeline under test is normal, verify whether the data acquisition and transmission functions are stable, and complete the overall installation of the cathodic protection test pile 100 after confirming that there are no errors. When the working pile body 120 malfunctions and needs maintenance or replacement, simply disconnect the test cable from the test module 130, loosen the detachable connection structure, and the entire working pile body 120 can be removed from the upper end of the pre-embedded pile body 110 for repair or directly replace with a new working pile body 120 without excavating the underground part.

[0025] The cathodic protection test pile 100 provided in this application includes a detachably connected pre-embedded pile body 110 and a working pile body 120. The lower end of the pre-embedded pile body 110 is buried underground, and the upper end is flush with the ground. The working pile body 120 is detachably installed on the upper end of the pre-embedded pile body 110, and a test module 130 is set on the working pile body 120 to monitor the pipeline under test. This design breaks down the traditional integrated cathodic protection test pile 100 into two independent parts: the pre-embedded pile body 110 and the working pile body 120. The underground pre-embedded part can be used for a long time after a one-time construction, while the above-ground working part can be disassembled independently. When common faults such as damage to the communication antenna 132, circuit failure, or collision damage occur in the above-ground section, there is no need to excavate the foundation pit again or remove the entire pile body, significantly reducing maintenance difficulty and workload.

[0026] In one possible embodiment of this application, such as Figure 1 As shown, the working pile body 120 includes a middle pile body 121 and a top pile body 122. The test module 130 includes a test circuit 131 and a communication antenna 132 electrically connected to the test circuit 131. The test circuit 131 is located in the accommodating cavity of the middle pile body 121, and the communication antenna 132 is located in the top pile body 122.

[0027] The working pile 120 is divided into two independent components, a middle pile 121 and a top pile 122, which are manufactured separately. The middle pile 121 is designed as a hollow structure, forming an internal accommodating chamber; the top pile 122 is designed to accommodate the communication antenna 132. The test circuit 131 is installed and securely fixed within the accommodating chamber of the middle pile 121, and the communication antenna 132 is installed at a designated position on the top pile 122. The communication antenna 132 is electrically connected to the test circuit 131 within the middle pile 121 via wires to ensure stable signal transmission. By further dividing the working pile 120 into the middle pile 121 and the top pile 122, precise replacement of faulty components is achieved. For example, if only the communication antenna 132 is damaged, only the top pile 122 needs to be replaced, without replacing the middle pile 121 containing the test circuit 131, further reducing maintenance costs. The communication antenna 132, which is susceptible to environmental influences and damage, is set separately in the top pile 122, while the core test circuit 131 is placed in the relatively safe middle pile 121 housing cavity. This reduces the probability of the test circuit 131 being affected by factors such as collisions, sun exposure, and rain, and improves the service life of the core components.

[0028] In one possible embodiment of this application, such as Figure 1As shown, the middle pile body 121 is provided with a second connecting flange 1211 and a third connecting flange 1212 on both sides. The pre-embedded pile body 110 is provided with a first connecting flange 111 connected to the second connecting flange 1211, and the top pile body 122 is provided with a fourth connecting flange 1221 connected to the third connecting flange 1212. Flange connection is a mature and reliable rigid connection method that can provide sufficient mechanical strength to ensure the stability of the cathodic protection test pile 100 under the action of external forces such as wind and vehicle collisions, and prevent the pile body from tilting or breaking.

[0029] Furthermore, the first connecting flange 111 is provided with a plurality of connecting bolts on the side facing the central pile body 121, and the second connecting flange 1211 is provided with a plurality of connecting holes corresponding to the connecting bolts one by one, and the connecting bolts and connecting holes are inserted and fitted together.

[0030] Specifically, on the side surface of the first connecting flange 111 facing the central pile body 121, multiple connecting bolts perpendicular to the flange surface are uniformly welded along the circumferential direction. The length of the bolts is determined according to the thickness of the second connecting flange 1211. On the second connecting flange 1211, corresponding to the positions of the connecting bolts, multiple connecting holes matching the diameter of the connecting bolts are machined, with the number of connecting holes matching the number of connecting bolts. When installing the central pile body 121, the connecting holes on the second connecting flange 1211 are aligned with the connecting bolts on the first connecting flange 111. Then, the central pile body 121 is placed downwards, allowing the connecting bolts to be inserted into the connecting holes, achieving initial positioning of the pre-embedded pile body 110 and the central pile body 121. Nuts are screwed onto and tightened at the end of the connecting bolts extending from the second connecting flange 1211, completing the final secure connection between the pre-embedded pile body 110 and the central pile body 121. The insertion and connection of the connecting screw and the connecting hole enables the pre-embedded pile body 110 and the middle pile body 121 to be positioned quickly and accurately, avoiding the difficulty of aligning the flange holes during installation and improving installation efficiency.

[0031] In one possible embodiment of this application, such as Figure 1 As shown, the outer diameters of the pre-embedded pile 110, the middle pile 121, and the top pile 122 gradually decrease.

[0032] Specifically, the outer diameter of the pre-embedded pile 110 is the maximum size, the outer diameter of the middle pile 121 is smaller than that of the pre-embedded pile 110, and the outer diameter of the top pile 122 is smaller than that of the middle pile 121, forming a stepped structure that is thicker at the bottom and thinner at the top. This structure lowers the center of gravity of the cathode protection test pile 100, enhances the pile's wind resistance and overturning resistance, and improves its overall stability.

[0033] In one possible embodiment of this application, such as Figure 1 As shown, the test circuit 131 includes a data acquisition device, a central control device, and a battery. The data acquisition device, antenna, and battery are all electrically connected to the central control device.

[0034] Specifically, the data acquisition device automatically collects parameters such as cathodic protection potential and current of the pipeline under test. After the central control device processes the data, it is remotely uploaded to the server via the communication antenna 132, realizing automated and unmanned monitoring of cathodic protection data without the need for manual on-site reading.

[0035] In one possible embodiment of this application, such as Figure 1 As shown, the top pile body 122 includes a connecting part, a guiding part, and a mounting part. The fourth connecting flange 1221 is provided in the connecting part, and the antenna is provided in the mounting part. The side wall of the mounting part is provided with a mounting through hole, and the transmitting and receiving ends of the antenna are exposed in the mounting through hole.

[0036] Specifically, the top pile 122 is integrally machined into three parts: a connecting part, a guiding part, and a mounting part. The connecting part is a cylindrical structure used to connect with the middle pile 121; the guiding part is located above the connecting part and serves as a transition structure; the mounting part is located above the guiding part and is a structure suitable for mounting the antenna. Exposing the antenna's transceiver end outside the mounting through hole avoids the shielding effect of the metal pile on radio signals, ensuring that the communication antenna 132 can transmit and receive signals normally, and improving the stability and reliability of data transmission.

[0037] In one possible embodiment of this application, such as Figure 1 As shown, the guide section is a guide slope, which is used to guide rainwater to slide down.

[0038] Specifically, the guide section is designed as a frustum-shaped structure, wider at the bottom and narrower at the top, with a guide slope on its side. The inclination angle of the guide slope is designed to be between 30° and 60° to ensure that rainwater can slide off smoothly. The lower end of the guide section connects smoothly to the upper end of the connecting section, and the upper end of the guide section connects smoothly to the lower end of the mounting section, avoiding grooves or gaps where water can accumulate. The guide slope allows rainwater to slide quickly off the surface of the top pile 122, preventing rainwater from accumulating on the surface of the top pile 122 and preventing rainwater from seeping into the pile body and causing short circuits or component corrosion.

[0039] In one possible embodiment of this application, such as Figure 1 As shown, a sealing and heat-insulating layer is provided inside the accommodating cavity.

[0040] Specifically, materials with good sealing and thermal insulation properties, such as polyurethane foam, rock wool, and aluminum silicate wool, are selected to prepare a sealing and insulation layer that matches the shape of the inner wall of the accommodating cavity of the central pile 121. This sealing and insulation layer effectively isolates the influence of external temperature changes on the temperature inside the accommodating cavity. In low-temperature winter environments, it prevents battery capacity from decreasing due to excessively low temperatures and prevents circuit malfunctions caused by low temperatures, ensuring the normal operation of the test circuit 131 in cold regions.

[0041] In one possible embodiment of this application, such as Figure 1 As shown, a pile gate is provided on the central pile body 121, and a sealing ring is provided on the inner side of the pile gate.

[0042] Specifically, a rectangular gate of appropriate size is made on the side wall of the central pile body 121. The size of the gate should allow maintenance personnel to easily reach into the accommodating chamber for operation. A hinge is installed on one side of the gate to connect it to the central pile body 121, allowing the gate to rotate around the hinge to open and close. A lock is installed on the other side of the gate to keep it locked in the closed position, preventing unauthorized personnel from opening it. A sealing groove is made around the inner edge of the gate, and a sealing ring is embedded in the groove and securely fixed. The sealing ring should be made of rubber material with good elasticity and aging resistance.

[0043] By installing a gate, maintenance personnel can open the gate without disassembling the central pile body 121 to inspect, repair, and replace batteries in the housing chamber, greatly improving the convenience of maintaining internal components. The sealing ring on the inside of the gate effectively seals the gap between the gate and the central pile body 121, preventing rainwater, dust, and moisture from entering the housing chamber and protecting the internal test circuit 131 from damage.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cathode protection test pile, characterized in that, It includes a detachably connected pre-embedded pile body and a working pile body. The lower end of the pre-embedded pile body is buried underground, and the upper end is flush with the ground. The working pile body is detachably installed on the upper end of the pre-embedded pile body. A test module is provided on the working pile body, and the test module monitors the pipeline under test.

2. The cathode protection test pile according to claim 1, characterized in that, The working pile body includes a middle pile body and a top pile body. The test module includes a test circuit and a communication antenna electrically connected to the test circuit. The test circuit is disposed in the accommodating cavity of the middle pile body, and the communication antenna is disposed in the top pile body.

3. The cathode protection test pile according to claim 2, characterized in that, The middle pile body is provided with a second connecting flange and a third connecting flange on both sides. The pre-embedded pile body is provided with a first connecting flange connected to the second connecting flange, and the top pile body is provided with a fourth connecting flange connected to the third connecting flange.

4. The cathode protection test pile according to claim 3, characterized in that, The first connecting flange has multiple connecting bolts on the side facing the central pile body, and the second connecting flange has multiple connecting holes corresponding to the connecting bolts. The connecting bolts and the connecting holes are inserted into each other.

5. The cathode protection test pile according to claim 2, characterized in that, The outer diameters of the pre-embedded pile, the middle pile, and the top pile gradually decrease.

6. The cathode protection test pile according to claim 2, characterized in that, The test circuit includes a data acquisition device, a central control device, and a battery. The data acquisition device, the antenna, and the battery are all electrically connected to the central control device.

7. The cathode protection test pile according to claim 3, characterized in that, The top pile body includes a connecting part, a guiding part, and a mounting part. The fourth connecting flange is disposed in the connecting part, and the antenna is disposed in the mounting part. The side wall of the mounting part is provided with a mounting through hole, and the transmitting and receiving ends of the antenna are exposed in the mounting through hole.

8. The cathode protection test pile according to claim 7, characterized in that, The guide portion is a guide slope, which is used to guide rainwater to slide down.

9. The cathode protection test pile according to claim 2, characterized in that, The accommodating cavity is provided with a sealing and heat-insulating layer.

10. The cathode protection test pile according to claim 2, characterized in that, A pile gate is provided on the middle pile body, and a sealing ring is provided on the inner side of the pile gate.

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