CN210237785U

CN210237785U - Anode ground bed

Info

Publication number: CN210237785U
Application number: CN201920766535.8U
Authority: CN
Inventors: Yankun Zhang; 张彦坤; Baofeng Ding; 丁宝峰; Taishen Di; 邸泰深; Kun Wang; 王坤; Zhubing Du; 杜柱兵; Tengfei Li; 李腾飞
Original assignee: Beijing Bss Corrosion Protection Industry Co ltd
Current assignee: Beijing Bss Corrosion Protection Industry Co ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-04-03
Anticipated expiration: 2029-05-24

Abstract

The utility model provides an anode ground bed, which comprises: the anode body is buried under the ground; and the water supply system extends to the ground and is positioned outside the anode body to supply water around the anode body. The utility model solves the problem that the laying operation of the anode ground bed in the prior art is restricted by the resistivity of the environmental soil.

Description

Anode ground bed

Technical Field

The utility model relates to a corrosion protection technical field particularly, relates to an anode ground bed.

Background

The cathodic protection is an important means for avoiding laying of the buried pipeline and ensuring the safe service of the buried pipeline. For large structures such as long-distance pipelines, impressed current cathodic protection technology is the most economical and effective cathodic protection technology. However, the reasonable address selection of the auxiliary anode ground bed for impressed current cathodic protection is the primary problem of the design of a cathodic protection system, and is also the key problem of whether the cathodic protection parameters of the buried pipeline can reach the design requirements after the cathodic protection system is operated. However, the breadth of our country is vast, the environment related to buried pipelines is complex and various, and in the regions with less rainwater in the northwest of our country, the soil resistivity of many regions cannot meet the site selection requirement of the conventional auxiliary anode. In order to reduce the grounding resistance of the auxiliary anode ground bed, reduce the construction difficulty and reduce the construction cost, a shallow auxiliary anode ground bed which can be used in a dry soil environment is researched and designed.

The buried pipeline auxiliary anode ground bed mainly comprises a shallow buried anode ground bed, a deep well anode ground bed and a flexible anode ground bed.

The shallow anode bed is an auxiliary anode bed mode which is used for installing one or more anodes vertically (vertically) or horizontally (horizontally) in soil with the depth of 1m or more underground so as to provide cathodic protection. The shallow anode ground bed is the most economic ground bed form in the aspect of installation mode. For the vertical anode ground bed is easy to generate air resistance, in order to avoid the air resistance, an exhaust system is required to be added during installation, but the shallow anode ground bed is different from a deep well in that: the device is in a distributed state, and occupies a wider area; under the limitation of site and other various factors, it is not practical to reserve a plurality of exhaust facilities on the earth surface, and the scheme is difficult to realize. The horizontal anode ground bed structure can avoid air resistance, but the design and construction modes under different geological environments are basically consistent, the traditional design structure is not suitable for the environment with high soil resistivity, even the condition of rework caused by incapability of running under the geological conditions with small water content and large soil resistivity exists, and under the condition of being not suitable for deep well anode construction, a large amount of people and material resources must be wasted to select the deep well anode.

The deep well anode bed is an auxiliary anode bed mode that one or more anodes are vertically arranged in a well hole with the depth of 15m or more underground to provide cathodic protection, and can effectively solve the problem of soil resistivity of shallow anodes. However, the deep well anode is limited by geological conditions, a well can not be drilled in a multi-rock section, the deep well anode is easy to collapse in a dry and loose sandy soil environment, a well to be drilled in an area with extremely high soil resistivity is very deep and sometimes even needs to be drilled to be more than 100m, the construction cost is high, and the construction and maintenance are difficult.

Flexible anode beds are auxiliary anode beds that provide cathodic protection by laying a linear, flexible auxiliary anode in close proximity along the body to be protected. The flexible anode is the latest generation auxiliary anode at present, the output current is uniform and stable, the problem that the anode cannot be laid in a rock and high-resistivity section is solved, and the cost is extremely high compared with the former two anode beds. Generally, the device is mainly used in stations and not used for long conveying pipelines.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide an anode ground bed to solve the problem that the laying operation of the anode ground bed in the prior art is restricted by the resistivity of the environmental soil.

In order to achieve the above object, the present invention provides an anode ground bed, comprising: the anode body is buried under the ground; and the water supply system extends to the ground and is positioned outside the anode body to supply water around the anode body.

Furthermore, the anode ground bed also comprises anode filler, the anode filler surrounds the periphery of the anode body, and the water supply system is connected with the top of the anode filler and supplies water to the top of the anode filler.

Further, the anode filler is carbon filler.

Further, the water supply system comprises a water supply pipe, one end of the water supply pipe extends out of the ground, the other end of the water supply pipe extends to the ground and is located above the anode body, the water supply pipe is provided with a water supply hole, and liquid in the water supply pipe flows out of the water supply hole.

Further, the anode body is provided with a plurality of water supply pipes passing above each anode body, so that each anode body is provided with the water supply pipes above.

Further, the water supply holes are formed in plural and arranged in sequence along the length direction of the water supply pipe.

Further, the water supply holes are plural and arranged in sequence along the circumferential direction of the water supply pipe.

Further, the water supply holes are symmetrically provided at both sides of the water supply pipe along a vertical axis of the water supply pipe, and are located below a lateral axis of the water supply pipe.

Further, the water supply pipe is a non-metallic water supply pipe.

Furthermore, the water supply system also comprises a cover body, and the cover body can cover one end of the water supply pipe extending out of the ground.

By applying the technical scheme of the utility model, through additionally arranging the water supply system, the water supply system can supply water to the environment such as the soil around the anode body, so that the environment around the anode body keeps a certain humidity, thereby solving the problems of high soil resistivity and the like caused by factors such as water content, soil texture, tightness and the like, reducing the soil resistivity of the environment around the pre-buried part of the anode body, ensuring the normal work of the anode bed, leading the mode of shallow-buried anode bed structure to be used in the regions with severe geological environment such as less rainwater and the like, simultaneously leading the water supply system to discharge the gas generated around the anode body, directly avoiding the generation of the gas resistance phenomenon, realizing the technical measure with simple and convenient construction by the mode, forming the anode bed which can be operated in daily maintenance, avoiding the uncontrollable use or use time of one-time construction, the labor, financial and time costs for maintenance and repair of the cathodic protection system are greatly reduced.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of an anode bed of the present invention;

FIG. 2 shows an enlarged view at P in FIG. 1; and

fig. 3 shows a left side view of fig. 2.

Wherein the figures include the following reference numerals:

10. an anode body; 20. a water supply system; 21. a water supply pipe; 22. a water supply hole; 23. a cover body; 30. and (4) filling the anode with a filler.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that the laying operation of the anode ground bed in the prior art is restricted by the resistivity of the environmental soil, the utility model provides an anode ground bed.

An anode ground bed as shown in fig. 1 comprises an anode body 10 and a water supply system 20, wherein the anode body 10 is buried under the ground; the water supply system 20 extends to the ground below and is located outside the anode body 10 to supply water around the anode body 10.

In the embodiment, the water supply system 20 is additionally arranged, the water supply system 20 can supply water to the environment such as soil around the anode body 10, so that the environment around the anode body 10 keeps a certain humidity degree, the problems of high soil resistivity and the like caused by factors such as water content, soil texture, tightness and the like are solved, the soil resistivity of the environment around the embedded part of the anode body 10 is reduced, the normal work of the anode bed is ensured, the shallow-buried anode bed structure mode can be used in regions with severe geological environment such as less rainwater, meanwhile, the water supply system 20 can discharge gas generated around the anode body 10, the generation of the gas resistance phenomenon is directly avoided, the technical measures which are simple and convenient to construct are realized, the anode bed which can be maintained and operated in daily life is formed, and the uncontrollable use or use time of one-time construction is avoided, the labor, financial and time costs for maintenance and repair of the cathodic protection system are greatly reduced.

The anode bed of the present embodiment is a horizontal shallow-buried anode bed, and the pre-packaged anode body 10 is buried under the ground in a horizontal installation manner. Due to the arrangement of the water supply system 20, the anode body 10 does not need to be deeply buried, so that the construction cost, the construction difficulty and the construction risk are greatly reduced.

In this embodiment, the anode bed further includes anode fillers 30, the anode fillers 30 surround the anode body 10, and the water supply system 20 is connected to the top of the anode fillers 30 and supplies water to the top of the anode fillers 30. During construction, the anode body 10 is firstly placed in a foundation pit dug in advance, a certain distance is kept between the anode body 10 and the bottom of the foundation pit, then the anode filler 30 is filled into the foundation pit, the periphery of the anode body 10 is surrounded by the anode filler 30 until the anode filler 30 is submerged in the anode body 10, and then the water supply system 20 is installed on the upper surface of the anode filler 30, so that the water supply system 20 can supply water to the anode filler 30 and the anode body 10 embedded in the anode filler 30, and the water is diffused into the soil inside the anode filler 30 and the soil around the anode filler 30 under the action of gravity and capillary phenomenon, so that the water is supplied to the periphery of the anode body 10, and the resistivity of the soil is reduced. Meanwhile, the anode filler 30 can prevent soil from directly contacting the water supply hole 22 of the water supply system 20, thereby avoiding the problem that the water supply hole 22 is blocked by soil to cause water failure.

Preferably, the anode filler 30 is a carbon filler.

In the present embodiment, the water supply system 20 includes a water supply pipe 21, one end of the water supply pipe 21 is extended out of the ground to facilitate automatic or manual water supply into the water supply pipe 21, the other end of the water supply pipe 21 is extended to the ground and positioned above the anode body 10, specifically, mounted on the upper surface of the anode packing 30, and the side of the water supply pipe 21 has a water supply hole 22, and when water is supplied into the water supply pipe 21, the water flows to the ground along the water supply pipe 21 and flows out of the water supply hole 22 to supply the surrounding soil with water. In addition to water, other liquids that increase the degree of soil wetting may be used in the water supply pipe 21.

When the anode body 10 is one, the segment of the water supply pipe 21 buried underground only needs to pass through the anode body 10, and when the anode bodies 10 are multiple, preferably, the anode bodies 10 are buried on the same horizontal plane, each anode body 10 is connected to the junction box through a cable, the water supply pipe 21 needs to pass above each anode body 10, so that the water supply pipe 21 is arranged above each anode body 10, thus, only one water supply pipe 21 needs to be arranged, the water supply pipe 21 can supply water around all the anode bodies 10, the complexity of the water supply system 20 is reduced, meanwhile, operations such as water adding and maintenance of the water supply system 20 are facilitated, and the labor intensity of workers is reduced. Of course, a plurality of water supply pipes 21 may be provided, and each water supply pipe 21 supplies water to one or several adjacent anode bodies 10.

As shown in fig. 2 and 3, since the anode body 10 of the present embodiment is provided in plurality, a plurality of water supply holes 22 are also provided and are sequentially arranged in the longitudinal direction of the water supply pipe 21, and at least one water supply hole 22 is provided above each anode body 10. In the present embodiment, a plurality of water supply holes 22 are provided above each anode body 10, and the water supply holes 22 are arranged in series along the circumferential direction of the water supply pipe 21 to ensure that the water supply pipe 21 supplies sufficient water to the surroundings of the anode body 10.

Preferably, the water supply holes 22 are symmetrically provided at both sides of the water supply pipe 21 along a vertical axis of the water supply pipe 21 and below a lateral axis of the water supply pipe 21 as shown in fig. 3 in a circular cross-section of the water supply pipe 21, and the water supply holes 22 at both sides of the water supply pipe 21 are sequentially staggered in a length direction of the water supply pipe 21 as shown in fig. 2.

In this embodiment, the water supply pipe 21 is a non-metallic porous pipe, the non-metallic property can prevent the water supply pipe 21 from being corroded, and the porosity is favorable for the water to fully wet the surrounding soil.

Optionally, the water supply system 20 further includes a cover 23, and the cover 23 can cover an end of the water supply pipe 21 extending out of the ground to shield an inlet side of the water supply pipe 21 from impurities entering the water supply pipe 21. An external water supply pipeline can be arranged at one end of the water supply pipe 21 extending out of the ground, water is directly led into the water supply pipe 21, and the regular and single operable water adding operation is realized in a valve control mode; the automatic water adding operation can be realized in a dripping system mode by installing a flow limiting device. The external water supply pipeline can be sourced from water sources without oil, such as natural water sources, reclaimed water systems and the like, so that the reasonable utilization of water resources is increased.

It should be noted that, a plurality in the above embodiments means at least two.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

1. the problem that the laying operation of the anode ground bed in the prior art is restricted by the resistivity of the environmental soil is solved;

2. the water supply system can also discharge gas generated around the anode body, so that the generation of the air resistance phenomenon is directly avoided;

3. the technical measures of simple construction are realized, the anode ground bed capable of being maintained and operated in daily life is formed, and the labor, financial and time costs of maintenance and repair of the cathode protection system are greatly reduced;

4. the shallow buried mode greatly reduces the construction cost, the construction difficulty and the construction risk.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anode bed, comprising:

an anode body (10), the anode body (10) being buried below ground;

a water supply system (20), the water supply system (20) extending to the ground below and being located outside the anode body (10) to supply water around the anode body (10).

2. Anode bed according to claim 1, characterized in that it further comprises anode packing (30), said anode packing (30) being enclosed around the anode body (10), said water supply system (20) being connected to the top of said anode packing (30) and supplying water to the top of said anode packing (30).

3. Anode bed according to claim 2, characterized in that the anode packing (30) is carbon packing.

4. Anode bed according to claim 1, characterized in that the water supply system (20) comprises a water supply pipe (21), one end of the water supply pipe (21) extending out of the ground and the other end of the water supply pipe (21) extending below the ground and above the anode body (10), the water supply pipe (21) having a water supply hole (22), the liquid in the water supply pipe (21) flowing out through the water supply hole (22).

5. An anode bed according to claim 4, characterized in that said anode bodies (10) are plural and said water supply pipe (21) passes above each of said anode bodies (10) so that above each of said anode bodies (10) there is said water supply pipe (21).

6. The anode bed according to claim 4, wherein said water supply holes (22) are plural and arranged in sequence along the length direction of said water supply pipe (21).

7. Anode bed according to claim 4, characterized in that the water supply holes (22) are in plurality and arranged in sequence along the circumference of the water supply pipe (21).

8. Anode bed according to claim 7, characterized in that the water supply holes (22) are arranged symmetrically on both sides of the water supply pipe (21) along the vertical axis of the water supply pipe (21) and below the transversal axis of the water supply pipe (21).

9. Anode bed according to claim 4, characterized in that the water supply pipe (21) is a non-metallic water supply pipe.

10. Anode bed according to claim 4, characterized in that the water supply system (20) further comprises a cover (23), the cover (23) being capable of covering the end of the water supply pipe (21) that protrudes out of the ground.