CN207877869U - A kind of underground oil and gas pipeline cathode protection device - Google Patents
A kind of underground oil and gas pipeline cathode protection device Download PDFInfo
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- CN207877869U CN207877869U CN201820122494.4U CN201820122494U CN207877869U CN 207877869 U CN207877869 U CN 207877869U CN 201820122494 U CN201820122494 U CN 201820122494U CN 207877869 U CN207877869 U CN 207877869U
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- 238000004210 cathodic protection Methods 0.000 claims abstract description 44
- 239000004677 Nylon Substances 0.000 claims abstract description 8
- 229920001778 nylon Polymers 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 15
- 238000009429 electrical wiring Methods 0.000 claims 1
- 230000001012 protector Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
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Abstract
本实用新型公开了一种地下油气管道用阴极保护装置，属于管道防腐技术领域，包括两组阴极保护装置，每一组阴极保护装置均包括牺牲阳极、安装片、电线、参比电极，所述安装片为弧形结构，相邻的两个安装片贴在管道的上部两侧，每个安装片上方分别通过电线连接到牺牲阳极，所述牺牲阳极埋在地面以下，所述牺牲阳极为子弹形，其上部为圆柱体、下部为圆锥体；相邻的两个安装片之间和下方均设有固定尼龙线，将安装片紧固在管道外侧。本实用新型通过设置双系统工作的方式，能够更加高效稳定的实现对阴极保护的作用，同时采用多种电力方式，满足偏远地区管道的阴极保护。
The utility model discloses a cathodic protection device for underground oil and gas pipelines, which belongs to the technical field of pipeline anticorrosion and includes two groups of cathodic protection devices, each group of cathodic protection devices includes a sacrificial anode, a mounting piece, an electric wire, and a reference electrode. The mounting piece is an arc-shaped structure, and two adjacent mounting pieces are pasted on both sides of the upper part of the pipe. The top of each mounting piece is respectively connected to the sacrificial anode by wires, and the sacrificial anode is buried below the ground, and the sacrificial anode is a bullet. The upper part is a cylinder and the lower part is a cone; there are fixed nylon wires between and below two adjacent mounting pieces to fasten the mounting pieces to the outside of the pipe. The utility model can realize the function of cathodic protection more efficiently and stably by setting the mode of dual-system operation, and adopts multiple power modes at the same time to satisfy the cathodic protection of pipelines in remote areas.
Description
技术领域technical field
本实用新型涉及管道防腐技术领域，具体是一种地下油气管道用阴极保护装置。The utility model relates to the technical field of pipeline anticorrosion, in particular to a cathodic protection device for underground oil and gas pipelines.
背景技术Background technique
在油气集输行业中，采用地下管道输送是常用的方式，而地下管道一般是采用填埋方式摆放到地下，在地下收到液体侵蚀，往往会发生管壁外侧腐蚀，同时，管道内的流体也会从内部对管道进行腐蚀。防腐层和阴极保护联合应用是目前埋地管道和地下金属构筑物最常用的腐蚀控制措施。防腐层保护是指在埋地管道、设备和异型件上涂装防腐层，由于防腐层通常需现场制作现场涂装，质量很难达到预制防腐层的质量，涂层缺陷较多，再加上选型不当，极易导致早期失效。所谓阴极保护技术就是向被保护的地下金属结构物通以足够量的直流阴极电流，对钢质管道外表面进行阴极极化，以降低钢质管道在土壤中的腐蚀电位，使腐蚀电流减小甚至趋于零，进而达到阻止金属结构腐蚀的腐蚀控制方法。如申请号为201420323564的中国专利，其提供了一套油气管道的阴极保护装置，但其主要是对线路结构进行了改良，在系统设置排布上，依然有改进的地方。In the oil and gas gathering and transportation industry, the use of underground pipelines is a common method of transportation, and underground pipelines are generally placed underground by landfill, and when they are eroded by liquids underground, corrosion often occurs on the outside of the pipe wall. Fluids can also corrode pipes from the inside. The combined application of anticorrosion coating and cathodic protection is the most commonly used corrosion control measure for buried pipelines and underground metal structures. Anti-corrosion layer protection refers to the coating of anti-corrosion layer on buried pipelines, equipment and special-shaped parts. Since the anti-corrosion layer usually needs to be painted on-site, the quality is difficult to reach the quality of the prefabricated anti-corrosion layer, and there are many coating defects. Improper selection can easily lead to early failure. The so-called cathodic protection technology is to pass a sufficient amount of DC cathodic current to the underground metal structure to be protected, and cathodically polarize the outer surface of the steel pipeline to reduce the corrosion potential of the steel pipeline in the soil and reduce the corrosion current. Even tends to zero, and then achieves a corrosion control method to prevent corrosion of metal structures. For example, the Chinese patent application No. 201420323564 provides a cathodic protection device for oil and gas pipelines, but it mainly improves the circuit structure, and there is still room for improvement in the arrangement of the system.
实用新型内容Utility model content
针对上述问题，本实用新型提供一种地下油气管道用阴极保护装置，通过设置双系统工作的方式，能够更加高效稳定的实现对阴极保护的作用，同时采用多种电力方式，满足偏远地区管道的阴极保护。In view of the above problems, the utility model provides a cathodic protection device for underground oil and gas pipelines. By setting up a dual-system working mode, the cathodic protection can be realized more efficiently and stably. At the same time, a variety of power modes are used to meet the needs of pipelines in remote areas. cathodic protection.
本实用新型的技术方案是：The technical scheme of the utility model is:
一种地下油气管道用阴极保护装置，包括两组阴极保护装置，每一组阴极保护装置均包括牺牲阳极、安装片、电线、参比电极，所述安装片为弧形结构，相邻的两个安装片贴在管道的上部两侧，每个安装片上方分别通过电线连接到牺牲阳极，所述牺牲阳极埋在地面以下，所述牺牲阳极为子弹形，其上部为圆柱体、下部为圆锥体；相邻的两个安装片之间和下方均设有固定尼龙线，将安装片紧固在管道外侧。A cathodic protection device for underground oil and gas pipelines, including two sets of cathodic protection devices, each group of cathodic protection devices includes sacrificial anodes, installation pieces, wires, and reference electrodes, the installation pieces are arc-shaped structures, and the adjacent two Two installation pieces are pasted on both sides of the upper part of the pipeline, and the upper part of each installation piece is respectively connected to the sacrificial anode by wires, and the sacrificial anode is buried below the ground, and the sacrificial anode is bullet-shaped, the upper part is a cylinder, and the lower part is a cone body; fixed nylon wires are provided between and below two adjacent mounting pieces to fasten the mounting pieces to the outside of the pipe.
进一步的，阴极保护装置中还包括电力箱，所述电力箱连接到电线上，在于电线的连接处设有三通开关。所述三通开关通过变换通道，联通电力箱和安装片，此时牺牲阳极依然与电力箱连接，或单独联通牺牲阳极和安装片。Further, the cathodic protection device also includes a power box, the power box is connected to the electric wire, and a three-way switch is provided at the connection of the electric wire. The three-way switch communicates with the power box and the installation piece by changing channels, and at this time, the sacrificial anode is still connected with the power box, or the sacrificial anode and the installation piece are connected separately.
进一步的，所述阴极保护装置沿着管道设有多排，每一排的间距为20-40米。Further, the cathodic protection device is arranged in multiple rows along the pipeline, and the distance between each row is 20-40 meters.
进一步的，所述电力箱上设有参比电极，参比电极插入地面下方。Further, a reference electrode is provided on the electric box, and the reference electrode is inserted under the ground.
进一步的，电力箱内设有电池盒、恒电位仪。Further, a battery box and a potentiostat are arranged in the power box.
进一步的，所述电力箱上设有外接电源接头。Further, the power box is provided with an external power supply connector.
进一步的，所述电力箱上设有太阳能电池板，太阳能电池板连接到电力箱内的电池盒。Further, the power box is provided with a solar panel, and the solar panel is connected to the battery box in the power box.
进一步的，所述电力箱上设有风力发电器，风力发电器连接到电力箱内的电池盒。Further, the power box is provided with a wind power generator, and the wind power generator is connected to the battery box in the power box.
本实用新型的有益效果是：The beneficial effects of the utility model are:
1、本实用新型通过设置阴极保护装置，能够实现对管道的阴极保护，且采用的是两套对称设置的阴极保护装置，能够更有效的保护管道，在其中一套出现故障后，依然可以保护本段管道；1. The utility model can realize the cathodic protection of the pipeline by setting the cathodic protection device, and adopts two sets of cathodic protection devices arranged symmetrically, which can protect the pipeline more effectively. After one of the cathodic protection devices fails, it can still protect the pipeline. This section of the pipeline;
2、通过设置牺牲阳极，可以使其保护管道，同时也可以通过电力箱对管道进行保护；2. By setting the sacrificial anode, it can protect the pipeline, and at the same time, the pipeline can be protected by the power box;
3、所述电力箱上设有多种蓄电方式，如外接电源、风力发电、太阳能发电等，根据所在区域的具体情况选择适宜的方式，确保在无人值守地区依然可以满足油气集输管道的阴极保护。3. The power box is equipped with a variety of power storage methods, such as external power supply, wind power generation, solar power generation, etc., and choose an appropriate method according to the specific conditions of the area to ensure that oil and gas gathering and transportation pipelines can still be satisfied in unattended areas. cathodic protection.
附图说明Description of drawings
图1是本实用新型的立体结构示意图；Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;
图2是图1的主视图；Fig. 2 is the front view of Fig. 1;
图3是图2的实施例3的结构示意图；Fig. 3 is the structural representation of embodiment 3 of Fig. 2;
图4是图2的实施例4的结构示意图。FIG. 4 is a schematic structural diagram of Embodiment 4 in FIG. 2 .
图中：In the picture:
1为管道、2为牺牲阳极、3为安装片、4为电力箱、5为电线、6为参比电极、7为固定尼龙线、8为三通开关、9为太阳能电池板、10为风力发电器、11为地面。1 is the pipe, 2 is the sacrificial anode, 3 is the mounting plate, 4 is the power box, 5 is the wire, 6 is the reference electrode, 7 is the fixed nylon wire, 8 is the three-way switch, 9 is the solar panel, and 10 is the wind power Generator, 11 is ground.
具体实施方式Detailed ways
下面结合附图和实施例对本实用新型进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is further described.
实施例1Example 1
如图1和2所示，一种地下油气管道用阴极保护装置，包括两组阴极保护装置，每一组阴极保护装置均包括牺牲阳极2、安装片3、电线5、参比电极6，所述安装片3为弧形结构，相邻的两个安装片3贴在管道1的上部两侧，每个安装片3上方分别通过电线5连接到牺牲阳极2，所述牺牲阳极2埋在地面11以下，所述牺牲阳极2为子弹形，其上部为圆柱体、下部为圆锥体，以使其下端更容易插入土壤，在安装的初期方便安装，且能够增大与土壤的接触面积；相邻的两个安装片3之间和下方均设有固定尼龙线7，将安装片3紧固在管道1外侧。阴极保护装置中还包括电力箱4，所述电力箱4连接到电线5上，在于电线5的连接处设有三通开关8。所述三通开关8通过变换通道，联通电力箱4和安装片3，此时牺牲阳极2依然与电力箱4连接，或单独联通牺牲阳极2和安装片3，确保形成循环电路。所述阴极保护装置沿着管道1设有多排，每一排的间距为20米。所述电力箱4上设有参比电极6，参比电极6插入地面11下方。适用于各种场景，但需要定期进行维护，防止牺牲阳极2腐蚀过多，失去保护价值，所采用的牺牲阳极2为锌合金。As shown in Figures 1 and 2, a cathodic protection device for underground oil and gas pipelines includes two groups of cathodic protection devices, and each group of cathodic protection devices includes a sacrificial anode 2, a mounting piece 3, an electric wire 5, and a reference electrode 6. The mounting pieces 3 are arc-shaped structures, two adjacent mounting pieces 3 are pasted on both sides of the upper part of the pipeline 1, and the top of each mounting piece 3 is respectively connected to the sacrificial anode 2 through the wire 5, and the sacrificial anode 2 is buried in the ground Below 11, the sacrificial anode 2 is bullet-shaped, its upper part is a cylinder, and its lower part is a cone, so that its lower end can be more easily inserted into the soil, which is convenient for installation at the initial stage of installation, and can increase the contact area with the soil; A fixed nylon thread 7 is provided between and below two adjacent mounting pieces 3 to fasten the mounting pieces 3 on the outside of the pipe 1 . The cathodic protection device also includes a power box 4 connected to the electric wire 5 , and a three-way switch 8 is provided at the junction of the electric wire 5 . The three-way switch 8 communicates with the power box 4 and the mounting piece 3 by changing channels, and at this time, the sacrificial anode 2 is still connected with the power box 4, or the sacrificial anode 2 and the mounting piece 3 are connected separately to ensure the formation of a loop circuit. The cathodic protection devices are arranged in multiple rows along the pipeline 1, and the distance between each row is 20 meters. The electric box 4 is provided with a reference electrode 6 , and the reference electrode 6 is inserted under the ground 11 . It is suitable for various scenarios, but requires regular maintenance to prevent the sacrificial anode 2 from corroding too much and losing its protective value. The sacrificial anode 2 used is a zinc alloy.
实施例2Example 2
如图1和2所示，一种地下油气管道用阴极保护装置，包括两组阴极保护装置，每一组阴极保护装置均包括牺牲阳极2、安装片3、电线5、参比电极6，所述安装片3为弧形结构，相邻的两个安装片3贴在管道1的上部两侧，每个安装片3上方分别通过电线5连接到牺牲阳极2，所述牺牲阳极2埋在地面11以下，所述牺牲阳极2为子弹形，其上部为圆柱体、下部为圆锥体，以使其下端更容易插入土壤，在安装的初期方便安装，且能够增大与土壤的接触面积；相邻的两个安装片3之间和下方均设有固定尼龙线7，将安装片3紧固在管道1外侧。阴极保护装置中还包括电力箱4，所述电力箱4连接到电线5上，在于电线5的连接处设有三通开关8。所述三通开关8通过变换通道，联通电力箱4和安装片3，此时牺牲阳极2依然与电力箱4连接，或单独联通牺牲阳极2和安装片3。所述阴极保护装置沿着管道1设有多排，每一排的间距为25米。所述电力箱4上设有参比电极6，参比电极6插入地面11下方。电力箱4内设有电池盒、恒电位仪。所述电力箱4上设有外接电源接头，能够直接连通到场站的电源。适用于离场站较近区域的阴极保护。As shown in Figures 1 and 2, a cathodic protection device for underground oil and gas pipelines includes two groups of cathodic protection devices, and each group of cathodic protection devices includes a sacrificial anode 2, a mounting piece 3, an electric wire 5, and a reference electrode 6. The mounting pieces 3 are arc-shaped structures, two adjacent mounting pieces 3 are pasted on both sides of the upper part of the pipeline 1, and the top of each mounting piece 3 is respectively connected to the sacrificial anode 2 through the wire 5, and the sacrificial anode 2 is buried in the ground Below 11, the sacrificial anode 2 is bullet-shaped, its upper part is a cylinder, and its lower part is a cone, so that its lower end can be more easily inserted into the soil, which is convenient for installation at the initial stage of installation, and can increase the contact area with the soil; A fixed nylon thread 7 is provided between and below two adjacent mounting pieces 3 to fasten the mounting pieces 3 on the outside of the pipe 1 . The cathodic protection device also includes a power box 4 connected to the electric wire 5 , and a three-way switch 8 is provided at the connection of the electric wire 5 . The three-way switch 8 communicates with the power box 4 and the mounting piece 3 by changing channels, and at this time, the sacrificial anode 2 is still connected with the power box 4, or the sacrificial anode 2 and the mounting piece 3 are connected separately. The cathodic protection devices are arranged in multiple rows along the pipeline 1, and the distance between each row is 25 meters. The electric box 4 is provided with a reference electrode 6 , and the reference electrode 6 is inserted under the ground 11 . The power box 4 is provided with a battery box and a potentiostat. The power box 4 is provided with an external power supply connector, which can be directly connected to the power supply of the station. It is suitable for cathodic protection in the area close to the station.
实施例3Example 3
如图1-3所示，一种地下油气管道用阴极保护装置，包括两组阴极保护装置，每一组阴极保护装置均包括牺牲阳极2、安装片3、电线5、参比电极6，所述安装片3为弧形结构，相邻的两个安装片3贴在管道1的上部两侧，每个安装片3上方分别通过电线5连接到牺牲阳极2，所述牺牲阳极2埋在地面11以下，所述牺牲阳极2为子弹形，其上部为圆柱体、下部为圆锥体；相邻的两个安装片3之间和下方均设有固定尼龙线7，将安装片3紧固在管道1外侧。阴极保护装置中还包括电力箱4，所述电力箱4连接到电线5上，在于电线5的连接处设有三通开关8。所述三通开关8通过变换通道，联通电力箱4和安装片3，此时牺牲阳极2依然与电力箱4连接，或单独联通牺牲阳极2和安装片3。所述阴极保护装置沿着管道1设有多排，每一排的间距为30米。所述电力箱4上设有参比电极6，参比电极6插入地面11下方。电力箱4内设有电池盒、恒电位仪。所述电力箱4上设有太阳能电池板9，太阳能电池板9连接到电力箱4内的电池盒。适用于沙漠等日照充足区域。As shown in Figure 1-3, a cathodic protection device for underground oil and gas pipelines includes two sets of cathodic protection devices, and each set of cathodic protection devices includes a sacrificial anode 2, a mounting piece 3, an electric wire 5, and a reference electrode 6. The mounting pieces 3 are arc-shaped structures, two adjacent mounting pieces 3 are pasted on both sides of the upper part of the pipeline 1, and the top of each mounting piece 3 is respectively connected to the sacrificial anode 2 through the wire 5, and the sacrificial anode 2 is buried in the ground Below 11, the sacrificial anode 2 is bullet-shaped, its upper part is a cylinder, and its lower part is a cone; fixed nylon wires 7 are provided between and below two adjacent mounting pieces 3, and the mounting pieces 3 are fastened on the Pipe 1 outside. The cathodic protection device also includes a power box 4 connected to the electric wire 5 , and a three-way switch 8 is provided at the junction of the electric wire 5 . The three-way switch 8 communicates with the power box 4 and the mounting piece 3 by changing channels, and at this time, the sacrificial anode 2 is still connected with the power box 4, or the sacrificial anode 2 and the mounting piece 3 are connected separately. The cathodic protection devices are arranged in multiple rows along the pipeline 1, and the distance between each row is 30 meters. The electric box 4 is provided with a reference electrode 6 , and the reference electrode 6 is inserted under the ground 11 . The power box 4 is provided with a battery box and a potentiostat. The power box 4 is provided with a solar battery panel 9 , and the solar battery panel 9 is connected to a battery box in the power box 4 . Suitable for sunny areas such as deserts.
实施例4Example 4
如图1、2和4所示，一种地下油气管道用阴极保护装置，包括两组阴极保护装置，每一组阴极保护装置均包括牺牲阳极2、安装片3、电线5、参比电极6，所述安装片3为弧形结构，相邻的两个安装片3贴在管道1的上部两侧，每个安装片3上方分别通过电线5连接到牺牲阳极2，所述牺牲阳极2埋在地面11以下，所述牺牲阳极2为子弹形，其上部为圆柱体、下部为圆锥体；相邻的两个安装片3之间和下方均设有固定尼龙线7，将安装片3紧固在管道1外侧。阴极保护装置中还包括电力箱4，所述电力箱4连接到电线5上，在于电线5的连接处设有三通开关8。所述三通开关8通过变换通道，联通电力箱4和安装片3，此时牺牲阳极2依然与电力箱4连接，或单独联通牺牲阳极2和安装片3。所述阴极保护装置沿着管道1设有多排，每一排的间距为40米。所述电力箱4上设有参比电极6，参比电极6插入地面11下方。电力箱4内设有电池盒、恒电位仪。所述电力箱4上设有风力发电器10，风力发电器10连接到电力箱4内的电池盒。适用于海边和山谷等风力充足区域，其间距设置较远，也是因为可以满足电力需求。As shown in Figures 1, 2 and 4, a cathodic protection device for underground oil and gas pipelines includes two groups of cathodic protection devices, each group of cathodic protection devices includes a sacrificial anode 2, a mounting piece 3, an electric wire 5, and a reference electrode 6 , the mounting piece 3 is an arc-shaped structure, two adjacent mounting pieces 3 are attached to the upper sides of the pipe 1, and the top of each mounting piece 3 is respectively connected to the sacrificial anode 2 through a wire 5, and the sacrificial anode 2 is buried Below the ground 11, the sacrificial anode 2 is bullet-shaped, and its upper part is a cylinder and the lower part is a cone; fixed nylon wires 7 are arranged between and below two adjacent mounting pieces 3, and the mounting pieces 3 are tightened. Fixed on the outside of the pipe 1. The cathodic protection device also includes a power box 4 connected to the electric wire 5 , and a three-way switch 8 is provided at the junction of the electric wire 5 . The three-way switch 8 communicates with the power box 4 and the mounting piece 3 by changing channels, and at this time, the sacrificial anode 2 is still connected with the power box 4, or the sacrificial anode 2 and the mounting piece 3 are connected separately. The cathodic protection devices are arranged in multiple rows along the pipeline 1, and the distance between each row is 40 meters. The electric box 4 is provided with a reference electrode 6 , and the reference electrode 6 is inserted under the ground 11 . The power box 4 is provided with a battery box and a potentiostat. The power box 4 is provided with a wind power generator 10 , and the wind power generator 10 is connected to the battery box in the power box 4 . It is suitable for areas with sufficient wind such as seasides and valleys, and the distance between them is set far away, also because it can meet the power demand.
以上所述，仅是本实用新型的较佳实施例而已，并非对本实用新型作任何形式上的限制，虽然本实用新型已以较佳实施例揭露如上，然而并非用以限定本实用新型，任何熟悉本专业的技术人员，在不脱离本实用新型技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本实用新型技术方案的内容，依据本实用新型的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本实用新型技术方案的范围内。The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.
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| CN110747477A (en) * | 2019-11-21 | 2020-02-04 | 中国华电科工集团有限公司 | Comprehensive corrosion prevention system and corrosion prevention method for coastal buried carbon steel seawater medium pipeline |
| CN118639236A (en) * | 2023-03-13 | 2024-09-13 | 中国石油天然气股份有限公司 | A corrosion control system and control method in a gathering and transportation pipeline |
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| CN110747477A (en) * | 2019-11-21 | 2020-02-04 | 中国华电科工集团有限公司 | Comprehensive corrosion prevention system and corrosion prevention method for coastal buried carbon steel seawater medium pipeline |
| CN118639236A (en) * | 2023-03-13 | 2024-09-13 | 中国石油天然气股份有限公司 | A corrosion control system and control method in a gathering and transportation pipeline |
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