Stray Current Corrosion Protection Device for Metal Pipelines and Railways

Abstract

This utility model discloses a stray current corrosion protection device for metal pipeline railways, relating to the field of metal pipeline protection. It includes a fixed shell and a base. Two sets of connecting components are installed at the bottom of the fixed shell, and a fixed frame is provided at the top of the base. Fixed posts are fixed on both sides of the fixed shell, and a fixing rope is connected to the outer wall of each fixed post. A fixing bolt is installed at the end of each fixing rope, and a connecting wire is connected to the bottom of the base. When it is necessary to replace the zinc posts that are fixed to the fixed shell and base, the fixing bolts on both sides of the base are rotated out of the fixing holes, the fixed shell and base are moved away from each other, and then the zinc post is replaced. After the new zinc post is placed in the fixed frame, the fixed shell is pushed downwards so that the guide plate inside the fixed shell contacts the top wall of the zinc post. The fixing rope is wound around the winding loop, fixing the fixing bolt to the base. This allows the conductive connecting wire to be reused multiple times.

Description

Technical Field

[0001] This utility model relates to the field of metal pipeline protection, specifically a stray current corrosion protection device for metal pipeline railways. Background Technology

[0002] In railway transportation systems, the power supply circuits of DC-powered rail transit equipment, such as subways and trams, are not completely closed. When the insulation performance between the track and the ground deteriorates, or due to factors such as uneven resistance at track joints or rail aging, some current will leak into the ground. These currents that deviate from the normal circuit are called stray currents. Stray currents flow in the soil and, once they come into contact with buried metal pipes, they will form new current paths through the pipes, thus generating stray currents on the metal pipes. Stray currents are extremely harmful to metal pipes. They will destroy the originally stable oxide film on the surface of the metal pipes, exposing the metal to the electrolyte environment of the soil and triggering electrochemical reactions. At the point where the current flows out of the metal pipe, the metal will undergo anodic dissolution, leading to local corrosion and perforation of the pipes and shortening their service life.

[0003] Currently, the anodic sacrificial method is widely used to solve the problem of stray current corrosion of metal pipes. This method involves connecting a wire to the outer wall of the metal pipe, installing multiple sets of zinc bars at the ends of the wire, and burying the zinc bars in the soil. Since zinc is more reactive than the metal pipe, under the action of stray current, the zinc bars, as the anode, preferentially undergo oxidation, while the metal pipe, as the cathode, is protected. In this way, the stray current on the metal pipe is conducted to the zinc bars through the wire, thus protecting the metal pipe.

[0004] However, the existing connection method of zinc bars has obvious defects. Usually, zinc bars are connected with metal cables. When the zinc bars are cast, the metal cables are fused into the zinc bars. When the zinc bars are worn out due to long-term use as sacrificial anodes and need to be replaced, the metal cables are tightly bonded to the zinc bars, so both have to be replaced together. However, the metal cables themselves are not completely worn out, resulting in a lot of waste of resources, as well as increased maintenance costs and replacement workload. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a stray current corrosion protection device for metal pipeline railways, so as to solve the technical problem that the metal cable used for connection needs to be replaced together when replacing zinc bars.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stray current corrosion protection device for metal pipeline railways, comprising a fixed shell and a base. Two sets of connecting components are installed at the bottom of the fixed shell. Each connecting component includes a first connecting column, a limiting groove is formed inside the first connecting column, a limiting block is provided inside the limiting groove, and a second connecting column is connected to the end of the limiting block. The base is fixed to the bottom of the second connecting column, and a fixing frame is provided at the top of the base. Fixing columns are fixed to both sides of the fixed shell, a fixing rope is connected to the outer wall of the fixing column, and a fixing bolt is installed at the end of the fixing rope. Two sets of fixing holes are formed on the outer wall of the base, and a connecting line is connected to the bottom of the base.

[0007] By adopting the above technical solution, the problem of having to replace the connecting metal cable when replacing the zinc bar is solved. When it is necessary to replace the zinc column that is fixed to the base, the fixing bolts on both sides of the base are rotated out of the fixing holes, the fixing shell and the base are moved away from each other, and then the zinc column is replaced. After the new zinc column is placed in the fixing frame, the fixing shell is pushed down so that the guide plate inside the fixing shell contacts the top wall of the zinc column. The fixing rope is wound around the winding ring to fix the fixing bolt to the base, so that the conductive connecting wire can be used multiple times.

[0008] The present invention is further configured such that both the fixed shell and the fixed frame have slots inside, and zinc pillars are provided inside the slots.

[0009] Preferably, the fixing shell and the fixing frame fix the zinc column through a slot.

[0010] The present invention is further configured such that the inner wall of the slot is provided with a guide plate, and the surface area of ​​the guide plate is greater than the surface area of ​​the end wall of the zinc column.

[0011] Preferably, when the fixing shell and the base are fixed at both ends of the zinc column, the two end walls of the zinc column can fully contact the surface of the guide plate, thereby increasing the conductivity of electrons.

[0012] The present invention is further configured such that a wire is installed on the top of the fixed shell, a battery cell is disposed inside the wire, and the end of the battery cell is connected to a guide plate.

[0013] Preferably, stray currents on the metal pipe are transmitted to the conductor plate through the conductor core.

[0014] The present invention is further configured such that one end of the connecting line is connected to the guide plate inside the base, and the other end of the connecting line is connected to the bottom of another set of bases.

[0015] Preferably, the connecting wire connects multiple sets of zinc pillars, so that the multiple sets of zinc pillars are connected in series.

[0016] The present invention is further configured such that the length of the fixing rope is greater than the total length of the first connecting post and the second connecting post, and the fixing rope is made of polypropylene.

[0017] Preferably, when the fixing shell and the base are fitted onto both ends of the zinc column, the fixing rope can tighten and fix the fixing shell and the base to prevent the zinc column from falling off the fixing shell and the base.

[0018] The present invention is further provided that the outer wall of the ends of the conductor and the connecting wire are equipped with protective rings, and the protective rings are made of rubber.

[0019] Preferably, the protective ring made of rubber has good deformation characteristics, which enables the protective ring to protect the ends of the wires and connecting wires.

[0020] The present invention is further configured such that two sets of winding rings are installed on the outer wall of the base, and the outer wall of the winding rings is provided with an anti-slip coating.

[0021] Preferably, before fixing the bolt to the outer wall of the base, the fixing rope is first wound around the winding loop in multiple strands so that the fixing rope can be in a taut state, so that the fixing shell and the guide plate inside the base can be tightly attached to the outer wall of the zinc column.

[0022] In summary, the present invention has the following main advantages: 1. This utility model solves the problem of having to replace the connecting metal cable when replacing a zinc bar by setting up a fixing shell, a slot, a base, a fixing frame, a fixing post, a fixing rope, and a fixing bolt. When it is necessary to replace the zinc post that is fixed to the fixing shell and the base, the fixing bolts on both sides of the base are rotated out of the fixing holes, the fixing shell and the base are moved away from each other, and then the zinc post is replaced. After the new zinc post is placed in the fixing frame, the fixing shell is pushed down so that the guide plate inside the fixing shell contacts the top wall of the zinc post. The fixing rope is wound around the winding ring to fix the fixing bolt to the base, so that the conductive connecting wire can be used multiple times.

[0023] 2. By setting a first connecting column, a limiting groove, a second connecting column, and a limiting block, this utility model ensures that when personnel push the fixed shell and the base away, the limiting groove inside the first connecting column limits the sliding distance of the limiting block, preventing the fixed shell and the base from separating. This facilitates the installation of the zinc column between the fixed shell and the base. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall device of this utility model; Figure 2 This is a schematic diagram of the zinc column fixing method of this utility model; Figure 3 This is a schematic diagram of the zinc column replacement in this utility model; Figure 4 This is a diagram showing the internal structure of the connecting component of this utility model; Figure 5 This is a diagram of the internal structure of the fixed shell of this utility model.

[0025] Explanation of reference numerals in the attached figures: 1. Fixing shell; 101. Slot; 102. Battery cell; 103. Guide plate; 104. Wire; 105. Protective ring; 2. Base; 201. Fixing frame; 202. Connecting wire; 3. Connecting shell; 4. Zinc pillar; 5. Fixing pillar; 501. Fixing rope; 502. Winding ring; 503. Fixing bolt; 504. Fixing hole; 6. First connecting pillar; 601. Limiting groove; 602. Second connecting pillar; 603. Limiting block. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The embodiments of this utility model will be described below based on its overall structure.

[0028] Please see Figure 1 — Figure 5 The system includes a fixed shell 1 and a base 2. Two sets of connecting components are installed at the bottom of the fixed shell 1. Each connecting component includes a first connecting post 6, with a limiting groove 601 inside the first connecting post 6. A limiting block 603 is installed inside the limiting groove 601, and a second connecting post 602 is connected to the end of the limiting block 603. The base 2 is fixed to the bottom of the second connecting post 602, and a fixing frame 201 is installed on the top of the base 2. Fixing posts 5 are fixed to both sides of the fixed shell 1. Fixing ropes 501 are connected to the outer walls of the fixing posts 5, and fixing bolts 503 are installed at the ends of the fixing ropes 501. Two sets of fixing holes 504 are opened on the outer wall of the base 2, and a connecting wire is connected to the bottom of the base 2. 202 solves the problem of having to replace the connecting metal cable when replacing the zinc bar. When it is necessary to replace the zinc column 4 that is fixed to the base 2 and the fixing shell 1, rotate the fixing bolts 503 on both sides of the base 2 out of the fixing holes 504 to remove them, move the fixing shell 1 and the base 2 away from each other, and then replace the zinc column 4. After the new zinc column 4 is placed in the fixing frame 201, push the fixing shell 1 downward so that the guide plate 103 inside the fixing shell 1 contacts the top wall of the zinc column 4, and wrap the fixing rope 501 around the winding ring 502 to fix the fixing bolt 503 to the base 2, so that the conductive connecting wire 202 can be used multiple times.

[0029] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 and Figure 5 Both the fixed shell 1 and the fixed frame 201 have slots 101 inside, and zinc pillars 4 are installed inside the slots 101. The fixed shell 1 and the fixed frame 201 fix the zinc pillars 4 through the slots 101.

[0030] For details regarding the above embodiments, please refer to [link / reference]. Figure 5 The inner wall of the slot 101 is provided with a guide plate 103, and the surface area of ​​the guide plate 103 is larger than the surface area of ​​the end wall of the zinc column 4. When the fixing shell 1 and the base 2 are fixed at both ends of the zinc column 4, the end walls of the zinc column 4 can fully contact the surface wall of the guide plate 103, thereby increasing the electron conductivity.

[0031] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 5 A wire 104 is installed on the top of the fixed shell 1. A battery cell 102 is installed inside the wire 104, and the end of the battery cell 102 is connected to a guide plate 103. Stray current on the metal pipe is transmitted to the guide plate 103 through the battery cell 102 in the wire 104.

[0032] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 5 One end of the connecting line 202 is connected to the guide plate 103 inside the base 2, and the other end of the connecting line 202 is connected to the bottom of another set of bases 2. The connecting line 202 connects multiple sets of zinc pillars 4, so that multiple sets of zinc pillars 4 are connected in series.

[0033] For details regarding the above embodiments, please refer to [link / reference]. Figure 3 The length of the fixing rope 501 is greater than the total length of the first connecting post 6 and the second connecting post 602, and the fixing rope 501 is made of polypropylene. When the fixing shell 1 and the base 2 are fitted onto the two ends of the zinc post 4, the fixing rope 501 can tighten and fix the fixing shell 1 and the base 2 to prevent the zinc post 4 from falling off the fixing shell 1 and the base 2.

[0034] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 2 The outer walls of the ends of the conductor 104 and the connecting wire 202 are equipped with protective rings 105, and the protective rings 105 are made of rubber. The rubber protective rings 105 have good deformation characteristics, which enables the protective rings 105 to protect the ends of the conductor 104 and the connecting wire 202.

[0035] For details regarding the above embodiments, please refer to [link / reference]. Figure 2Two sets of winding rings 502 are installed on the outer wall of the base 2, and the outer wall of the winding rings 502 is provided with an anti-slip coating. Before the fixing bolt 503 is fixed to the outer wall of the base 2, the fixing rope 501 is wound around the winding rings 502 in multiple strands so that the fixing rope 501 can be in a taut state, so that the fixing shell 1 and the guide plate 103 inside the base 2 can be tightly attached to the outer wall of the zinc column 4.

[0036] In practical operation, when it is necessary to replace the zinc column 4 that is fastened between the fixing shell 1 and the base 2, firstly, rotate and remove the fixing bolts 503 on both sides of the base 2 from the fixing holes 504, push the fixing shell 1 upward so that the fixing shell 1 is raised to the position directly above the zinc column 4, and replace the zinc column 4. When the new zinc column 4 is placed in the fixing frame 201 at the top of the base 2, push the fixing shell 1 downward so that the guide plate 103 inside the fixing shell 1 contacts the top wall of the zinc column 4, and then wrap the fixing rope 501 around it. Finally, the fixing bolt 503 is fixed to the fixing hole 504 by means of threaded connection on the winding ring 502, thereby completing the replacement operation of a set of zinc columns 4. After all zinc columns 4 have been replaced, the zinc columns 4 are vertically buried in the soil. The compression of the soil allows the guide plate 103 on the inner wall of the fixing shell 1 and the base 2 to fit tightly against the upper and lower walls of the zinc column 4. The stray current on the metal pipe is conducted to the guide plate 103 through the battery cell 102, so that the zinc column 4 can act as the anode to undergo an oxidation reaction, thereby protecting the metal pipe.

[0037] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A stray current corrosion protection device for metal pipeline railways, comprising a fixed shell (1) and a base (2), characterized in that: Two sets of connecting components are installed at the bottom of the fixed shell (1). The connecting components include a first connecting post (6). A limiting groove (601) is opened inside the first connecting post (6). A limiting block (603) is set inside the limiting groove (601). A second connecting post (602) is connected to the end of the limiting block (603). A base (2) is fixed at the bottom end of the second connecting post (602). A fixing frame (201) is set at the top of the base (2). Fixing posts (5) are fixed on both sides of the fixed shell (1). A fixing rope (501) is connected to the outer wall of the fixing post (5). A fixing bolt (503) is installed at the end of the fixing rope (501). Two sets of fixing holes (504) are opened on the outer wall of the base (2). A connecting line (202) is connected to the bottom of the base (2).

2. The stray current corrosion protection device for metal pipeline railways according to claim 1, characterized in that: Both the fixed shell (1) and the fixed frame (201) have slots (101) inside, and zinc pillars (4) are provided inside the slots (101).

3. The stray current corrosion protection device for metal pipeline railways according to claim 2, characterized in that: The inner wall of the slot (101) is provided with a guide plate (103), and the surface area of ​​the guide plate (103) is greater than the surface area of ​​the end wall of the zinc column (4).

4. The stray current corrosion protection device for metal pipeline railways according to claim 3, characterized in that: The top of the fixed shell (1) is equipped with a wire (104), and the inside of the wire (104) is provided with a battery cell (102), and the end of the battery cell (102) is connected to a guide plate (103).

5. The stray current corrosion protection device for metal pipeline railways according to claim 3, characterized in that: One end of the connecting line (202) is connected to the guide plate (103) inside the base (2), and the other end of the connecting line (202) is connected to the bottom of another set of bases (2).

6. The stray current corrosion protection device for metal pipeline railways according to claim 1, characterized in that: The length of the fixing rope (501) is greater than the total length of the first connecting post (6) and the second connecting post (602), and the fixing rope (501) is made of polypropylene.

7. The stray current corrosion protection device for metal pipeline railways according to claim 4, characterized in that: The outer walls of the ends of the conductor (104) and the connecting wire (202) are equipped with protective rings (105), and the protective rings (105) are made of rubber.

8. The stray current corrosion protection device for metal pipeline railways according to claim 1, characterized in that: The outer wall of the base (2) is equipped with two sets of winding rings (502), and the outer wall of the winding rings (502) is provided with an anti-slip coating.

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