Cathodic protection device for pipeline corrosion protection

Abstract

The utility model relates to the technical field of cathodic protection of pipelines, and in particular to a cathodic protection device for pipeline corrosion protection, including a pressing plate and a connecting wire for connecting to a negative voltage, a plastic belt for winding around the pipeline is fixedly connected to the bottom end of one side of the pressing plate, a limiting mechanism for clamping the plastic belt is arranged at the upper end of one side of the pressing plate, a slot for inserting the plastic belt is opened on the other side of the pressing plate, and a fixing mechanism for clamping the connecting wire is fixedly installed on the other side of the pressing plate. The utility model places the pressing plate on the pipeline, pulls the plastic belt through the slot, and passes it through the bottom of the pressing plate, presses the pressing plate downward, fixes the position of the plastic belt by a roller, and fixes the device on the pipeline. The process is simple and quick; by rotating the handle clockwise, the bolt is controlled to move upward to control the clamp to close inward, thereby fixing the position of the connecting wire to better protect the connecting wire from being damaged by external factors.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline cathode protection, in particular to a cathode protection device for pipeline corrosion prevention. Background Art

[0002] Sacrificial anode protection is also known as sacrificial anode protection method; it is a method of preventing metal corrosion by using the principle of galvanic cell. The specific method is to use a metal with strong reducing properties as a protective electrode and connect it to the protected metal to form a galvanic cell. The metal with strong reducing properties will act as the negative electrode to undergo oxidation-reduction reaction and be sacrificed and consumed, while the protected metal will act as the positive electrode to avoid corrosion.

[0003] The existing cathodic protection technology for pipelines often adopts a cathodic protection device for pipeline corrosion protection, such as the one disclosed in announcement number CN218146957U, which places an upper pressure plate on the top of the metal pipeline, and a lower pressure plate on the bottom of the metal pipeline. The upper pressure block and the lower pressure block are respectively clamped on the top of the upper side plate and the bottom of the lower side plate through slots, and the rotating drum is rotated to fix the upper and lower pressure plates to the metal pipeline. By setting a plurality of symmetrically distributed slots, the anode connecting wire and the metal pipeline are connected. In actual installation, when connecting the upper and lower pressure plates, the two sets of connections need to be aligned, and this process is extremely cumbersome and requires more time and effort. Utility Model Content

[0004] The utility model aims to solve the problem of complicated process of connecting the device to the pipeline in the prior art, and proposes a cathodic protection device for pipeline corrosion prevention.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cathodic protection device for pipeline corrosion protection comprises a pressing plate for being placed on the pipeline and a connecting wire for connecting to a negative voltage, wherein a plastic belt for winding around the pipeline is fixedly connected to the bottom end of one side of the pressing plate, a limiting mechanism for clamping the plastic belt is arranged at the upper end of one side of the pressing plate, a slot hole for inserting the plastic belt is opened on the other side of the pressing plate, and a fixing mechanism for clamping the connecting wire is arranged on the other side of the pressing plate.

[0007] Preferably, the contact surface between the pressure plate and the pipeline is an arc-shaped surface that fits the outer wall of the pipeline, and the slot hole is a rectangular hole.

[0008] Preferably, the limiting mechanism includes a support block welded to the pressure plate, the support block is provided with a first through hole for placing a pin, a pressing plate is connected to a pin shaft on the support block, a roller is rotatably mounted on the bottom end of the pressing plate, a contact block is welded to the bottom end of the pressing plate, and a second through hole is provided on the contact block.

[0009] Preferably, the centers of the second through hole and the first through hole are both located on an arc with the pin shaft of the pressing plate as the center.

[0010] Preferably, the fixing mechanism includes a threaded hole provided on the pressure plate, a base is welded on the pressure plate, a bolt is matched with the threaded hole, a handle is fixedly installed on the top of the bolt, a bearing is matched with the bolt, a connecting block is fixedly installed on the bearing, a sliding groove is provided on the connecting block, a connecting rod connected to the base pin shaft is slidably installed in the sliding groove, a transmission rod is rotatably installed on the free end of the connecting rod, a clamp is slidably installed on the bottom end of the pressure plate, and a slider connected to the free end pin shaft of the transmission rod is slidably installed on the clamp.

[0011] Preferably, the clamp is a semi-arc structure that fits the connecting line.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model places the pressing plate on the pipe, pulls the plastic belt through the slot and passes through the bottom of the pressing plate, presses the pressing plate downward, fixes the plastic belt in position through a roller, and fixes the device on the pipe. The process is simple and fast, saving a lot of time and energy.

[0014] 2. The utility model controls the bolt to move upward by rotating the handle clockwise, so as to control the clamp to close inward, thereby fixing the position of the connecting wire to better protect the connecting wire from being damaged by external factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a cathodic protection device for pipeline corrosion protection proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a limiting mechanism of a cathodic protection device for pipeline corrosion protection proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the fixing mechanism structure of a cathodic protection device for pipeline corrosion protection proposed by the utility model;

[0018] Figure 4 This is a partial enlarged schematic diagram of A of a cathodic protection device for pipeline corrosion protection proposed by the utility model.

[0019] In the figure: 1, pressure plate; 2, plastic belt; 3, slot; 4, support block; 5, first through hole; 6, pressing plate; 7, roller; 8, contact block; 9, second through hole; 10, threaded hole; 11, bolt; 12, handle; 13, connecting block; 14, base; 15, connecting rod; 16, transmission rod; 17, clamp; 18, slider; 19, bearing; 20, slide groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 4 A cathodic protection device for pipeline corrosion protection comprises a pressing plate 1 for being placed on the pipeline and a connecting wire for connecting to a negative voltage. The contact surface between the pressing plate 1 and the pipeline is an arc-shaped surface that fits the outer wall of the pipeline and is suitable for pipelines of various sizes. The connecting wire applies an external current to the surface of the corroded metal structure, and the protected structure becomes a cathode, thereby suppressing the electron migration caused by metal corrosion and avoiding or weakening the occurrence of corrosion. A plastic belt 2 for wrapping around the pipeline is fixedly connected to the bottom end of one side of the pressing plate 1. The plastic belt 2 is soft in texture and has extremely strong corrosion resistance. A limiting mechanism for clamping the plastic belt 2 is arranged at the upper end of one side of the pressing plate 1. A slot 3 for inserting the plastic belt 2 is provided on the other side of the pressing plate 1. The slot 3 is a rectangular hole. A fixing mechanism for clamping the connecting wire is fixedly installed on the other side of the pressing plate 1.

[0022] The limiting mechanism includes a support block 4 welded on the pressure plate 1, and a first through hole 5 for placing a pin is opened on the support block 4. A pressing plate 6 is connected to the pin shaft on the support block 4, and a roller 7 is rotatably installed on the bottom end of the pressing plate 6. When the pressing plate 6 is squeezed, the roller 7 will slide on the plastic belt 2 and squeeze it, forming a clamping force on the plastic belt 2. A contact block 8 is welded on the bottom end of the pressing plate 6, and a second through hole 9 is opened on the contact block 8.

[0023] The centers of the second through hole 9 and the first through hole 5 are both located on an arc with the pin of the pressing plate 6 as the center. When the pressing plate 6 is parallel to the support block 4, the first through hole 5 and the second through hole 9 will correspond to each other.

[0024] The fixing mechanism includes a threaded hole 10 opened on the pressing plate 1, a base 14 is welded on the pressing plate 1, a bolt 11 is matched and installed in the threaded hole 10, a handle 12 is fixedly installed on the top of the bolt 11, a bearing 19 is matched and installed on the bolt 11, and a connecting block 13 is fixedly installed on the bearing 19. When the bolt 11 is rotated, the bearing 19 will rotate. A slide groove 20 is opened on the connecting block 13, and a connecting rod 15 connected with the pin shaft of the base 14 is slidably installed in the slide groove 20. The connecting rod 15 is composed of an oblique rod and a vertical rod, and the base 14 is connected to the oblique rod. A transmission rod 16 is rotatably installed on the free end of the connecting rod 15, and a clamp 17 is slidably installed at the bottom end of the pressing plate 1. The clamp 17 is a semi-arc structure that fits the connecting line. A slider 18 connected with the pin shaft of the free end of the transmission rod 16 is slidably installed on the clamp 17. The swing of the connecting rod 15 controls the slider 18 to slide on the clamp 17, and the control clamp 17 can slide horizontally to better clamp and fix the connecting line.

[0025] It should be noted that the specific model and specification of the plastic belt 2 needs to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it is not repeated here.

[0026] The functional principle of the utility model can be explained through the following operation modes:

[0027] Place the pressing plate 1 on the pipe, pull the plastic belt 2 through the slot 3, and then pass it through the bottom end of the pressing plate 6, press the pressing plate 6 downward, the roller 7 contacts the plastic belt 2, and use a pin to pass through the first through hole 5 and the contact block 8 to fix the position of the pressing plate 6;

[0028] Place the connecting wire between the clamps 17, rotate the handle 12 clockwise to control the position of the bolt 11 to rise. At this time, the bottom end of the connecting rod 15 will deflect inward, and the slider 18 will slide upward through the transmission rod 16, thereby pushing the clamp 17 to slide inward to clamp and fix the connecting wire.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cathodic protection device for pipeline corrosion protection, comprising a pressure plate (1) for placement on the pipeline and a connecting line for connecting to a negative voltage, characterized in that: The bottom end of one side of the pressing plate (1) is fixedly connected to a plastic belt (2) for winding around the pipe, the upper end of one side of the pressing plate (1) is provided with a limiting mechanism for clamping the plastic belt (2), the other side of the pressing plate (1) is provided with a slot hole (3) for inserting the plastic belt (2), and the other side of the pressing plate (1) is fixedly installed with a fixing mechanism for clamping the connecting line.

2. A cathodic protection device for pipeline corrosion protection according to claim 1, characterized in that: The contact surface between the pressing plate (1) and the pipeline is an arc-shaped surface that fits the outer wall of the pipeline, and the slot hole (3) is a rectangular hole.

3. A cathodic protection device for pipeline corrosion protection according to claim 1, characterized in that: The limiting mechanism comprises a support block (4) welded to the pressure plate (1), the support block (4) being provided with a first through hole (5) for placing a pin, a pressing plate (6) being connected to a pin shaft on the support block (4), a roller (7) being rotatably mounted at the bottom end of the pressing plate (6), a contact block (8) being welded to the bottom end of the pressing plate (6), and a second through hole (9) being provided on the contact block (8).

4. A cathodic protection device for pipeline corrosion protection according to claim 3, characterized in that: The centers of the second through hole (9) and the first through hole (5) are both located on an arc with the pin of the pressing plate (6) as the center.

5. The cathodic protection device for pipeline corrosion protection according to claim 1, characterized in that: The fixing mechanism comprises a threaded hole (10) provided on the pressure plate (1), a base (14) is welded on the pressure plate (1), a bolt (11) is matched with the threaded hole (10), a handle (12) is fixedly installed on the top of the bolt (11), a bearing (19) is matched with the bolt (11), a connecting block (13) is fixedly installed on the bearing (19), a sliding groove (20) is provided on the connecting block (13), a connecting rod (15) connected to the base (14) with a pin shaft is slidably installed in the sliding groove (20), a transmission rod (16) is rotatably installed on the free end of the connecting rod (15), a clamp (17) is slidably installed on the bottom end of the pressure plate (1), and a slider (18) connected to the free end pin shaft of the transmission rod (16) is slidably installed on the clamp (17).

6. A cathodic protection device for pipeline corrosion protection according to claim 5, characterized in that: The clamp (17) is a semi-arc structure that fits the connecting line.

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