A cathodic protection test pile structure

Abstract

The utility model relates to pipeline anticorrosion technical field, especially a kind of cathodic protection test pile structure, including support pipe;Support pipe inside upper end is equipped with terminal block;The four terminal ends of terminal block back surface are respectively used to be connected with the four detection lines that go up into from the lower end of support pipe, and the two terminal posts of terminal block surface are respectively used to be connected with the terminal pen of multimeter;Support pipe upper end is equipped with the protection cover of barrel shape;The position of support pipe opposite terminal block surface is equipped with let position opening, and the position of protection cover opposite let position opening is equipped with operation opening and is hingedly installed with cover plate;It is equipped with mounting pipe in support pipe, and the inner peripheral wall of mounting pipe has two protruding blocks, and the mounting protruding block formed by protruding on the upper end both sides of terminal block is respectively hung and installed on protruding block;The utility model has the characteristics that terminal block can be more conveniently installed and disassembled, and better sealing effect can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline corrosion protection technology, and in particular to a cathodic protection test pile structure. Background Technology

[0002] Cathodic protection is based on the principle of a galvanic cell and comes in two forms: sacrificial anode and impressed current. The former connects a low-potential metal (such as magnesium, zinc, or aluminum alloys) as the anode, preferentially corroding the metal while protecting the high-potential metal; the latter uses a DC power supply to make the protected metal the cathode. It is suitable for metal components in oil pipelines, ships, storage tanks, etc., and must be applied in an electrolyte environment. The specified protection potential is at least -0.85V.

[0003] In the sacrificial anode method, two anodes are typically buried next to the pipeline and connected to the pipeline by wires. A reference electrode is also buried, and each of the two anodes, the reference electrode, and the pipeline is connected to a test line. The test lines are inserted into a vertically arranged cylindrical test post next to the pipeline, and the four test lines are connected to a terminal block inside the test post. The terminal block has test connection points, and the test is completed by electrically connecting a multimeter to the test connection points (to check whether the protection potential reaches at least -0.85V).

[0004] However, the existing technology has the following drawbacks in the design of the test pile: 1. The overall rectangular structure of the terminal block with protrusions on both sides at the top forming mounting bumps makes it inconvenient to install and arrange. The installation structure is not reasonable enough, and it is easy to come into contact with the metal test pile and conduct electricity, affecting the reliability of the test. In addition, it is not convenient to disassemble and maintain it quickly. 2. The overall sealing is poor, and it cannot effectively prevent fogging from entering, affecting the service life. 3. The connection points on the terminal block are not well exposed, making it inconvenient to connect to the two probes of a multimeter.

[0005] Therefore, how to design a cathodic protection test pile structure with a simpler and more reasonable structure, which makes it easier to install and disassemble the terminal block, has a better sealing effect, and exposes the connection points on the terminal block for easy wiring has become a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is how to design a cathodic protection test pile structure with a simpler and more reasonable structural design, which can make it easier to install and disassemble the terminal block, has a better sealing effect, and can better expose the connection points on the terminal block for easy wiring.

[0007] To achieve the above objectives, this utility model provides a cathodic protection test pile structure, including a support tube; a terminal block is installed at the upper end of the support tube; four terminals on the back of the terminal block are each used to connect to four test lines extending upward from the lower end of the support tube, and two terminals on the surface of the terminal block are each used to connect to the probes of a multimeter; a cylindrical protective cover is fitted over the upper end of the support tube; a clearance opening is provided on the support tube opposite to the surface of the terminal block; the characteristic feature is that an installation tube is provided inside the support tube, and the inner circumferential wall of the installation tube has two protrusions, and the installation protrusions formed by the two protrusions on the upper sides of the terminal block are respectively hooked onto the protrusions; a support block is provided at the lower end of the installation tube, and the lower end of the terminal block fits into the installation groove at the upper end of the support block; and a wire hole is provided on the support block for the test lines to pass through; a test opening is provided on the installation tube corresponding to the clearance opening.

[0008] Furthermore, the protective cover has an operating opening opposite the clearance opening and is hinged to a cover plate.

[0009] In this structure, when testing is required, the cover plate on the protective shield is opened, and the two leads of the multimeter are passed sequentially through the clearance opening on the support tube and the test opening on the mounting tube, and connected to the two terminals on the surface of the terminal block. The test is completed by reading the multimeter value. In this structure, the mounting tube allows for complete removal from the top of the support tube, facilitating easier installation of the terminal block on the mounting tube and separate removal of the terminal block from the mounting tube. Installation does not rely on screws, and the terminal block is well-positioned after installation. This makes the overall structure simpler and more rational, enabling faster terminal block installation and easier disassembly and maintenance.

[0010] As an optimization, a mating groove is provided on the upper surface of the protrusion, and the mounting protrusions formed by the protrusions on both sides of the upper end of the terminal block are respectively mated in the mating groove.

[0011] In this way, by setting the mating groove, the two mounting protrusions on the terminal block are installed behind the mating groove, which can better constrain and position the terminal block and improve the reliability of installation.

[0012] As an optimization, the lower end of the mounting cylinder is bent inward to form a ring-shaped mounting flange, and an assembly hole is formed on the inner side of the mounting flange, and the corresponding support block is inserted and installed in the assembly hole.

[0013] In this way, by forming an installation flange at the lower end of the mounting cylinder, the support block can be installed and fixed in the assembly hole formed by the installation flange.

[0014] As an optimization, the support block is made of rubber material, and the diameter of the wire hole matches the diameter of the detection wire, so that after the detection wire passes through the wire hole, the outer circumference of the detection wire is attached to the inner circumference of the wire hole.

[0015] In this way, the support block is made of rubber, which can better seal the assembly hole and prevent moisture from flowing upward; it can also constrain and protect the detection line.

[0016] As an optimization, the support block includes an upper section and a lower section, with the diameter of the upper section being larger than that of the lower section. The lower section is inserted into the mounting hole, and the stepped surfaces formed between the upper and lower sections are supported on the upper side of the mounting flange.

[0017] In this way, the structural design of the support block is simpler and more reasonable, making it easier to install and more stable and reliable after installation; and it also makes the support block and the mounting cylinder a whole, which facilitates overall assembly and disassembly.

[0018] Furthermore, the diameter of the upper section of the support block is larger than the width of the lower end of the terminal block, and the mounting groove extends through the diameter of the upper section of the support block, so that the length of the mounting groove is larger than the width of the lower end of the terminal block.

[0019] Furthermore, a rubber protective pad is provided between the bottom surface of the mating groove and the mounting protrusion. This protects the terminal block.

[0020] Furthermore, the mounting tube is made of metal or plastic.

[0021] As an optimization, the upper end of the mounting tube is bent outward horizontally to form a ring-shaped assembly flange, which can be supported against the upper end surface of the support tube to limit the vertical position of the mounting tube; and a ring-shaped sealing groove is provided on the upper surface of the assembly flange and a sealing ring is installed thereon, so that the bottom surface of the inner side of the protective cover can be supported against the sealing ring.

[0022] This better prevents moisture from entering the installation cylinder from the top, resulting in a better seal.

[0023] As an optimization, two locking threaded holes are provided in pairs at the lower end of the protective cover, and locking screws are provided in the locking threaded holes, so that the inner end of the locking screw can abut against and support the outer circumferential surface of the support tube.

[0024] This allows for better securing of the protective cover and also makes it easier to install and remove.

[0025] Furthermore, three terminal bolts are arranged in an equilateral triangle at the upper back of the terminal block, and another terminal bolt is located at the lower back of the terminal block. Each terminal bolt is connected to a connecting piece to form a terminal. Two copper plates are used on the surface of the terminal block to connect the three upper terminal bolts to form one terminal post, and the terminal bolt at the lower end of the terminal block forms the other terminal post. In this way, the structural design of the terminal block is simpler and more reasonable, and the two terminals on the terminal block are well exposed, making it easier to connect to the two probes of a multimeter.

[0026] In summary, the above-mentioned device has the advantages of simpler and more reasonable structural design, easier installation and disassembly of the terminal block, better sealing effect, and better exposure of the wiring points on the terminal block for easy wiring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the cathodic protection test pile structure in a specific embodiment of this utility model.

[0028] Figure 2 yes Figure 1 A diagram with the protective cover removed.

[0029] Figure 3 yes Figure 2 A magnified view of position A in the diagram.

[0030] Figure 4 yes Figure 1 A cross-sectional view.

[0031] Figure 5 yes Figure 4 A magnified view of position B in the diagram.

[0032] Figure 6 yes Figure 1 A schematic diagram of the installation pipe in the diagram.

[0033] Figure 7 yes Figure 6 A cross-sectional view.

[0034] Figure 8 yes Figure 1 A schematic diagram of the surface of the terminal block.

[0035] Figure 9 yes Figure 1 A schematic diagram of the back of the terminal block. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] like Figures 1 to 9 As shown, a cathodic protection test pile structure includes a support pipe 1; a terminal block 2 is installed at the upper end of the support pipe; four terminals on the back of the terminal block are each used to connect to four test lines 3 extending upward from the lower end of the support pipe, and two terminals on the surface of the terminal block are each used to connect to the probes of a multimeter; a cylindrical protective cover 4 is fitted over the upper end of the support pipe; a clearance opening 5 is provided on the support pipe opposite to the surface of the terminal block, and an operating opening is provided on the protective cover opposite to the clearance opening, with a cover plate 6 hinged to it; an installation pipe 7 is provided inside the support pipe, and two protrusions 8 are provided on the inner circumferential wall of the installation pipe; installation protrusions 9 formed by the protrusions on both sides of the upper end of the terminal block are respectively hung on the protrusions; a support block 10 is provided at the lower end of the installation pipe, and the lower end of the terminal block fits into the installation groove 11 at the upper end of the support block; and a wire hole is provided on the support block for the test lines to pass through; a test opening 12 is provided on the installation pipe corresponding to the clearance opening.

[0038] In this structure, when testing is required, the cover plate on the protective shield is opened, and the two leads of the multimeter are passed sequentially through the clearance opening on the support tube and the test opening on the mounting tube, and connected to the two terminals on the surface of the terminal block. The test is completed by reading the multimeter value. In this structure, the mounting tube allows for complete removal from the top of the support tube, facilitating easier installation of the terminal block on the mounting tube and separate removal of the terminal block from the mounting tube. Installation does not rely on screws, and the terminal block is well-positioned after installation. This makes the overall structure simpler and more rational, enabling faster terminal block installation and easier disassembly and maintenance.

[0039] Specifically, the protruding block has an overall elongated and curved design. This design is simpler and more reasonable, allowing it to better mate with the mounting protrusions formed by the protrusions on both sides of the upper part of the terminal block, and better preventing the terminal block from falling off the two protruding blocks.

[0040] In this specific embodiment, a mating groove 13 is provided on the upper surface of the protrusion, and the mounting protrusions formed by the protrusions on both sides of the upper end of the terminal block are respectively mated in the mating groove.

[0041] In this way, by setting the mating groove, the two mounting protrusions on the terminal block are installed behind the mating groove, which can better constrain and position the terminal block and improve the reliability of installation.

[0042] In this specific embodiment, the lower end of the mounting cylinder bends inward to form a ring-shaped mounting flange 14, and an assembly hole is formed on the inner side of the mounting flange, and the corresponding support block is inserted and installed in the assembly hole.

[0043] In this way, by forming an installation flange at the lower end of the mounting cylinder, the support block can be installed and fixed in the assembly hole formed by the installation flange.

[0044] In this specific embodiment, the support block is made of rubber material, and the diameter of the threading hole matches the diameter of the detection wire, so that after the detection wire passes through the threading hole, the outer circumferential surface of the detection wire is attached to the inner circumferential surface of the threading hole.

[0045] In this way, the support block is made of rubber, which can better seal the assembly hole and prevent moisture from flowing upward; it can also constrain and protect the detection line.

[0046] In this specific embodiment, the support block includes an upper section 15 and a lower section 16, and the diameter of the upper section is set to be larger than the diameter of the lower section. The lower section is inserted into the mounting hole, and the stepped surface formed between the upper and lower sections of the support block is supported on the upper side of the mounting flange.

[0047] In this way, the structural design of the support block is simpler and more reasonable, making it easier to install and more stable and reliable after installation; and it also makes the support block and the mounting cylinder a whole, which facilitates overall assembly and disassembly.

[0048] Furthermore, the diameter of the upper section of the support block is larger than the width of the lower end of the terminal block, and the mounting groove extends through the diameter of the upper section of the support block, so that the length of the mounting groove is larger than the width of the lower end of the terminal block.

[0049] Furthermore, a rubber protective pad is provided between the bottom surface of the mating groove and the mounting protrusion. This protects the terminal block.

[0050] Furthermore, the mounting tube is made of metal or plastic.

[0051] In this specific embodiment, the upper end of the mounting tube is bent outward horizontally to form an annular mounting flange 17, and the mounting flange can be supported against the upper end surface of the support tube to limit the vertical position of the mounting tube; and an annular sealing groove is provided on the upper surface of the mounting flange and a sealing ring 18 is installed thereon, and the bottom surface inside the protective cover can be supported against the sealing ring.

[0052] This better prevents moisture from entering the installation cylinder from the top, resulting in a better seal.

[0053] In this specific embodiment, two locking threaded holes are provided in pairs at the lower end of the protective cover, and locking screws 19 are provided in the locking threaded holes, so that the inner end of the locking screw can abut against and support the outer circumferential surface of the support tube.

[0054] This allows for better securing of the protective cover and also makes it easier to install and remove.

[0055] Furthermore, three terminal bolts 20 are arranged in an equilateral triangle at the upper back of the terminal block, and another terminal bolt is provided at the lower back of the terminal block. Each terminal bolt is connected to a terminal piece 21 to form a terminal. Two copper plates 22 are used on the surface of the terminal block to connect the three upper terminal bolts, forming one terminal post, while the terminal bolt at the lower end of the terminal block forms the other terminal post. This design simplifies the terminal block's structure, exposes the two terminals, and facilitates connection to the two probes of a multimeter.

[0056] In summary, the above-mentioned device has the advantages of simpler and more reasonable structural design, easier installation and disassembly of the terminal block, better sealing effect, and better exposure of the wiring points on the terminal block for easy wiring.

[0057] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A cathodic protection test pile structure, comprising a support pipe; a terminal block is installed at the upper end of the support pipe; four terminals on the back of the terminal block are each used to connect to four test lines extending upward from the lower end of the support pipe; two terminals on the surface of the terminal block are each used to connect to the probes of a multimeter; a cylindrical protective cover is fitted over the upper end of the support pipe; a clearance opening is provided on the support pipe at a position opposite to the surface of the terminal block; characterized in that; An installation tube is provided inside the support tube. The inner circumferential wall of the installation tube has two protrusions. The mounting protrusions formed by the two protrusions on the upper side of the terminal block are respectively hung on the protrusions. A support block is provided at the lower end of the installation tube. The lower end of the terminal block fits into the mounting groove at the upper end of the support block. The support block is provided with a wire hole for the test wire to pass through. A test opening is provided on the installation tube with a corresponding clearance opening.

2. The cathodic protection test pile structure as described in claim 1, characterized in that; A mating groove is provided on the upper surface of the protrusion, and the mounting protrusions formed by the protrusions on both sides of the upper end of the terminal block are respectively mated in the mating groove.

3. The cathodic protection test pile structure as described in claim 1, characterized in that; The lower end of the mounting cylinder bends inward to form a ring-shaped mounting flange. An assembly hole is formed on the inner side of the mounting flange, and the corresponding support block is inserted and installed in the assembly hole.

4. The cathodic protection test pile structure as described in claim 3, characterized in that; The support block is made of rubber, and the diameter of the wire hole matches the diameter of the detection wire. After the detection wire passes through the wire hole, the outer circumference of the detection wire is attached to the inner circumference of the wire hole.

5. The cathodic protection test pile structure as described in claim 4, characterized in that; The support block includes an upper section and a lower section, with the diameter of the upper section being larger than that of the lower section. The lower section is inserted into the mounting hole, and the stepped surfaces formed between the upper and lower sections are supported on the upper side of the mounting flange.

6. The cathodic protection test pile structure as described in claim 1, characterized in that; The upper end of the mounting tube is bent outward horizontally to form a ring-shaped assembly flange, which can be supported against the upper end surface of the support tube to limit the vertical position of the mounting tube; and a ring-shaped sealing groove is provided on the upper surface of the assembly flange and a sealing ring is installed thereon, so that the bottom surface of the inner side of the protective cover can be supported against the sealing ring.

7. The cathodic protection test pile structure as described in claim 1, characterized in that; Two locking threaded holes are provided in pairs at the lower end of the protective cover. Locking screws are installed in the locking threaded holes, and the inner end of the locking screws can abut against and support the outer circumferential surface of the support tube.

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