Cathode protection test pile with anti-corrosion shell

Abstract

A cathode protection test pile with an anti-corrosion shell comprises a plastic pile base buried underground and a steel pipe test pile located on the ground, and the plastic pile base is adopted as a buried part, so that corrosive substances such as moisture and inorganic salt in soil are effectively prevented from being in direct contact with a test pile body; and the service life of the test pile is greatly prolonged. The optimization of the internal structure of the test pile and the improvement of the anti-corrosion performance ensure the long-term stable operation of the measurement part, thereby improving the accuracy of the potential and current measurement of the protected metal structure. The method is of great significance in evaluating the protection effect of the cathode protection system and finding and solving faults in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to, specifically be a kind of cathodic protection test pile with anticorrosive shell. BACKGROUND

[0002] Cathodic protection test pile is mainly used for the detection of pipeline kilometer indication, cathodic protection effect and operating parameter. It is an indispensable device in pipeline management and maintenance, can ensure the effective operation of cathodic protection system, provides strong guarantee for the safe operation of metal structure, through the built-in measuring component, the potential of protected metal structure relative to reference electrode and the current size flowing through protected structure can be accurately measured, these data have important significance for evaluating the protection effect of cathodic protection system, discovering and solving fault in time.

[0003] The existing test pile mostly selects integrally-formed steel pipe material, and is coated with rust-proof paint on outer surface, and the bottom of test pile needs to be buried below ground surface during installation and use, the test pile structure above ground surface is relatively stable, and the part of test pile below ground surface is affected by moisture, inorganic salt and other corrosive substances in soil, and the rust-proof paint coating is damaged after a long time, so that the body structure of test pile is damaged, and the corresponding cathodic protection evaluation function cannot be played. SUMMARY

[0004] The utility model aims at providing a kind of cathodic protection test pile with anticorrosive shell, the part of being buried underground is the plastic pile base with more stable performance, is less affected by the substance in soil, can play the role of long-time cathodic protection evaluation, solve the problem in the prior art.

[0005] The utility model discloses a technical scheme that solves its technical problem is: the cathodic protection test pile with anticorrosive shell, including the plastic pile base, install the steel pipe test pile on the plastic pile base, install the terminal block in the inner chamber of steel pipe test pile, the position of corresponding terminal block, the plastic maintenance door that can rotate open and close is established at the outer surface of steel pipe test pile, one side of plastic maintenance door is hinged and is installed on steel pipe test pile, and the other side of plastic maintenance door is installed with the turn -lock, and turn -lock can close and lock plastic maintenance door on steel pipe test pile. The outer periphery of the bottom of steel pipe test pile is equipped with limit convex edge, and the outer periphery of steel pipe test pile on the upper side of limit convex edge is equipped with the cooperation and installation of connecting buckle cover, and the inner periphery of connecting buckle cover is equipped with internal thread, and the outer periphery of the upper portion of plastic pile base is equipped with the outer thread that cooperates with internal thread, and rotating connecting buckle cover can press limit convex edge on plastic pile base. The inner periphery of connecting buckle cover is equipped with sealing ring, and sealing ring is located between connecting buckle cover and steel pipe test pile, and the top surface of connecting buckle cover is the first inclined plane that inclines downward. Install the shade on the steel pipe test pile on the upper side of plastic maintenance door, and each edge of plastic maintenance door is equipped with sealing rubber strip. Install the wire arranging bracket in the inner chamber of steel pipe test pile, and the wire arranging bracket is located under terminal block, and the through hole is seted up on the wire arranging bracket, and the rubber sleeve is installed in the through hole, and the upper end of rubber sleeve that stretches out wire arranging bracket is equipped with limit ring, and the diameter of limit ring is greater than the diameter of through hole, and the wire groove that arranges along the axial direction is also seted up on the outer periphery of rubber sleeve, and the wire that is connected with terminal block can enter the inner chamber of rubber sleeve via wire groove, and the inner chamber wall of rubber sleeve is equipped with a plurality of carding board that inclines upward and gathers, and carding board can limit the wire under the rubber sleeve. The wire arranging bracket is cooperatively arranged in the inner chamber of steel pipe test pile, and the top of wire arranging bracket is the second inclined plane that inclines downward, and the drain hole that inclines downward is seted up on the pipe wall of steel pipe test pile in the position of corresponding second inclined plane.

[0006] The utility model discloses a cathodic protection test pile with anticorrosive shell, including the plastic pile base that is buried in the ground and the steel pipe test pile that is located on the ground, by adopting the plastic pile base as the buried part, effectively isolated the direct contact of the moisture, inorganic salt and other corrosive substances in the soil to test pile ontology, greatly prolonged the service life of test pile. The optimization of test pile internal structure and the improvement of anticorrosive performance ensure that the measuring component can long-term stable operation, thereby improve the accuracy of the electric potential and current measurement of the protected metal structure. This has important significance for evaluating the protection effect of cathodic protection system, timely finding and solving the fault. DRAWINGS

[0007] Figure 1 It is the structural schematic diagram of the utility model;

[0008] Figure 2 It is Figure 1A schematic view of the structure of the plastic access door in the open state;

[0009] Figure 3 is Figure 1 An enlarged view of the section view along A-A in the figure;

[0010] Figure 4 is a structural schematic view of installing the wire bracket in the steel pipe test pile;

[0011] Figure 5 is a partial cutaway view of the rubber sleeve;

[0012] Figure 6 is a schematic view of the use state of the utility model buried in the earth. DETAILED DESCRIPTION

[0013] The utility model discloses a cathodic protection test pile with anticorrosive shell, like Figure 1 And Figure 2 Shown, including plastic pile base 1, plastic pile base 1 is installed with steel pipe test pile 2, plastic pile base 1 is buried below ground, steel pipe test pile 2 is located above ground, the stability of plastic pile base 1 whole is superior to steel pipe test pile 2, can effectively resist the influence of the moisture, inorganic salt and other corrosive substances in the soil, guarantee the strength of plastic pile base 1 buried in the earth, avoid the damage phenomenon such as the inclination of cathodic protection test pile, cannot play normal test function.

[0014] The inner chamber of steel pipe test pile 2 is installed with terminal board 3, the inner side of terminal board 3 is used to connect the cathodic protection wire guided from underground, and the outer side of terminal board 3 can be used to connect corresponding test equipment to detect whether the cathodic protection device of the whole pipeline is effective. In order to protect terminal board 3 in steel pipe test pile 2, only when testing is allowed to contact with the external environment, a rotatable plastic access door 4 is arranged on the outer surface of steel pipe test pile 2 corresponding to the position of terminal board 3, one side of plastic access door 4 is hingedly installed on steel pipe test pile 2 through hinge 5, and the other side of plastic access door 4 is provided with turn tongue lock 6, and turn tongue lock 6 can close and lock plastic access door 4 on steel pipe test pile 2.

[0015] Plastic access door 4 has stronger stability, can maintain its strength in the complex outdoor environment, provides shielding for the internal terminal board 3, and the test maintenance personnel keeps the key of turn tongue lock 6, to ensure the safety and stability of plastic access door 4 when closing, to prevent unauthorized persons from opening at will.

[0016] Further, in order to realize the dismounting connection between plastic pile base 1 and steel pipe test pile 2, plastic pile base 1 and steel pipe test pile 2 are replaced and maintained as unit components, so as to improve the installation application range of test pile, like Figure 3As shown, the outer periphery of the bottom of the steel pipe test pile 2 is provided with a limiting protrusion 7, and a connecting buckle cover 8 is matched and installed on the outer periphery of the upper side of the limiting protrusion 7. The connecting buckle cover 8 is provided with an inner thread, and the outer periphery of the upper part of the plastic pile base 1 is provided with an outer thread matched with the inner thread. Rotating the connecting buckle cover 8 can press the limiting protrusion 7 tightly on the plastic pile base 1, so as to realize the detachable connection of the steel pipe test pile 2 on the plastic pile base 1.

[0017] Further, in order to ensure the close connection between the connecting buckle cover 8 and the steel pipe test pile 2, the inner periphery of the connecting buckle cover 8 is provided with a sealing ring 9, which is located between the connecting buckle cover 8 and the steel pipe test pile 2. The sealing ring 9 can effectively prevent the infiltration of moisture and corrosive substances, and the connecting buckle cover 8 can be made of plastic material, which further improves its corrosion resistance in the external environment. The top surface of the connecting buckle cover 8 is a first inclined surface 10 inclined downward, which can effectively avoid the accumulation of rainwater or snow on the top under the action of gravity, thereby slowing down the corrosion of the test pile and improving the service life of the test pile.

[0018] The plastic access door 4 is a mechanism that can be opened and closed by rotating, and there is a gap between the steel pipe test pile 2. In order to maximize the corrosion of corrosive substances in the external environment such as rainwater and dust into the steel pipe test pile 2 through the gap during the non-test process, the interface board 3 and the wire are eroded, a shade 11 is installed on the steel pipe test pile 2 on the upper side of the plastic access door 4, and a sealing rubber strip 12 is arranged on each edge of the plastic access door 4. The sealing rubber strip 12 can effectively seal the gap between the plastic access door 4 and the steel pipe test pile 2, and the shade 11 can provide corresponding shading effect when the plastic access door 4 is in the open state, so as to prevent corrosive substances such as rainwater from entering the steel pipe test pile 2 during the test process to damage the interface board 3 or the wire, so that the overall corrosion resistance of the device is significantly improved, thereby ensuring normal cathodic protection test operation.

[0019] Further, in order to provide an orderly arrangement space for the wires in the steel pipe test pile 2, as shown in Figure 4 and Figure 5 , a wire arranging bracket 13 is installed in the inner cavity of the steel pipe test pile 2, and the wire arranging bracket 13 is located on the lower side of the interface board 3. A through hole is formed in the wire arranging bracket 13, and the through hole is vertically formed. A rubber sleeve 14 is matched and installed in the through hole, and the rubber sleeve 14 is used for inserting and positioning the wire. The upper end of the rubber sleeve 14 extending out of the wire arranging bracket 13 is provided with a limiting ring 15, and the diameter of the limiting ring 15 is greater than the diameter of the through hole, so that the rubber sleeve 14 is positioned and matched in the through hole to prevent the rubber sleeve 14 from being separated from the wire arranging bracket 13.

[0020] The rubber sleeve 14 is further provided with an axial wire inlet groove 16 on the outer circumferential surface, and the wire connected with the terminal plate 3 can enter the inner cavity of the rubber sleeve 14 through the wire inlet groove 16. The inner cavity wall of the rubber sleeve 14 is provided with a plurality of wire clamping plates 17 inclined upward and gathered, which can limit the downward movement of the wire in the rubber sleeve 14 and ensure the normal connection of the upper end of the wire with the terminal plate 3.

[0021] When the wire needs to be inserted, first, the wire is inserted upward through the through hole of the wire arranging bracket 13, at this time, the rubber sleeve 14 has not entered the through hole, then the upper end of the wire is connected with the terminal plate 3, and subsequently the wire is loaded into the rubber sleeve 14 through the wire inlet groove 16, and the rubber sleeve 14 moves downward along the wire until it enters the through hole of the wire arranging bracket 13, and the installation is completed.

[0022] Due to the arrangement of the wire clamping plates 17 inside the rubber sleeve 14, the downward movement of the wire is limited, and the wire will not be separated from the terminal plate 3 under the action of gravity. The wire clamping plates 17 are arranged in a direction that facilitates the upward movement of the wire along the rubber sleeve 14, and the downward movement of the wire along the rubber sleeve 14 will generate great resistance. The arrangement of the wire inlet groove 16 facilitates the above installation operation, and the wire can be easily inserted into the rubber sleeve 14 through the wire inlet groove 16. Subsequently, the wire can also play a guiding role, so that the rubber sleeve 14 can smoothly enter the through hole of the wire arranging bracket 13 to complete the installation. The rubber sleeve 14 entering the through hole is in a closed state under the action of its own elasticity.

[0023] The combination of the wire arranging bracket 13 and the rubber sleeve 14 not only provides an orderly arrangement space for the wire, but also limits the downward movement of the wire through the wire clamping plates 17, avoiding the confusion and damage of the wire inside the test pile. The design of the wire inlet groove 16 makes it easy for the wire to enter the inner cavity of the rubber sleeve, facilitating connection and fixation.

[0024] Further, in order to facilitate the drainage of condensed water or rainwater accumulated in the steel pipe test pile 2 and maximize the reduction of the erosion of the test pile body by condensed water, the wire arranging bracket 13 is arranged in the inner cavity of the steel pipe test pile 2. The top of the wire arranging bracket 13 is a second inclined surface 18 inclined downward. Corresponding to the position of the second inclined surface 18, a downward inclined drainage hole 19 is formed in the pipe wall of the steel pipe test pile 2. Due to the blocking effect of the wire arranging bracket 13, the condensed water in the steel pipe test pile 2 will accumulate at the upper position of the wire arranging bracket 13. Under the action of gravity and the guiding action of the second inclined surface 18, the condensed water will be drained out of the steel pipe test pile 2 through the drainage hole 19. The downward inclined drainage hole 19 can maximize the prevention of the entry of external rainwater, thereby significantly improving the corrosion resistance of the overall test pile.

[0025] The utility model discloses a plastic pile base 1, plastic access door 4 as the anticorrosive external structure, convenient maintenance and the structure design of overhaul and optimization wire management etc. measures, significantly improved the anticorrosive performance, measurement accuracy and service life of cathodic protection test pile, provide strong guarantee for the safe operation of metal structure.

[0026] The technical scheme of the utility model is not limited to the scope of the embodiments described in the utility model. The technical content not described in the utility model is well-known technology.

Claims

1. A cathodic protection test post with a corrosion-resistant outer shell, characterized in that: It includes a plastic pile base (1), a steel pipe test pile (2) is installed on the plastic pile base (1), a wiring board (3) is installed in the inner cavity of the steel pipe test pile (2), and a plastic inspection door (4) that can be rotated and opened is provided on the outer surface of the steel pipe test pile (2) corresponding to the position of the wiring board (3). One side of the plastic inspection door (4) is hinged to the steel pipe test pile (2) by a hinge (5), and a rotary lock (6) is installed on the other side of the plastic inspection door (4). The rotary lock (6) can close and lock the plastic inspection door (4) on the steel pipe test pile (2).

2. The cathodic protection test post with an anti-corrosion shell according to claim 1, characterized in that: The outer periphery of the bottom of the steel pipe test pile (2) is provided with a limiting flange (7). The outer periphery of the steel pipe test pile (2) on the upper side of the limiting flange (7) is fitted with a connecting buckle (8). The inner periphery of the connecting buckle (8) is provided with an internal thread. The outer periphery of the upper part of the plastic pile base (1) is provided with an external thread that matches the internal thread. Rotating the connecting buckle (8) can press the limiting flange (7) onto the plastic pile base (1).

3. A cathodic protection test post with an anti-corrosion shell according to claim 2, characterized in that: The inner circumference of the connecting cover (8) is provided with a sealing ring (9), which is located between the connecting cover (8) and the steel pipe test pile (2). The top surface of the connecting cover (8) is a downwardly inclined first slope (10).

4. A cathodic protection test post with an anti-corrosion shell according to claim 1, characterized in that: A cover (11) is installed on the steel pipe test pile (2) on the upper side of the plastic inspection door (4), and a sealing rubber strip (12) is provided on each side of the plastic inspection door (4).

5. A cathodic protection test post with an anti-corrosion shell according to claim 1, characterized in that: A cable tray (13) is installed in the inner cavity of the steel pipe test pile (2). The cable tray (13) is located below the terminal block (3). A through hole is opened on the cable tray (13). A rubber sleeve (14) is installed in the through hole. A limiting ring (15) is provided at the upper end of the rubber sleeve (14) extending out of the cable tray (13). The diameter of the limiting ring (15) is larger than the diameter of the through hole. An axially arranged inlet groove (16) is also opened on the outer circumferential surface of the rubber sleeve (14). The wire connected to the terminal block (3) can enter the inner cavity of the rubber sleeve (14) through the inlet groove (16). The inner cavity wall of the rubber sleeve (14) is provided with several upwardly inclined and converging wire clamping plates (17). The wire clamping plates (17) can restrict the downward movement of the wires in the rubber sleeve (14).

6. A cathodic protection test post with an anti-corrosion shell according to claim 5, characterized in that: The cable tray (13) is fitted into the inner cavity of the steel pipe test pile (2). The top of the cable tray (13) is a downward inclined second slope (18). Corresponding to the position of the second inclined slope (18), a downward inclined drainage hole (19) is opened on the pipe wall of the steel pipe test pile (2).

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