阅读说明：本技术 低压燃气管网开放式阴极保护太阳能供电系统及安装方法 (Open type cathode protection solar power supply system of low-pressure gas pipe network and installation method ) 是由 王龙腾 杜艳霞 葛彩刚 贾京鹿 李彩霞 尹志彪 曹忠涛 于 2020-06-05 设计创作，主要内容包括：本发明涉及低压燃气管网开放式阴极保护太阳能供电系统及安装方法,系统包括太阳能电池板、太阳能控制器、太阳能电池组、直流电源和阴极保护效果测试反馈装置,直流电源的正、负极对应与浅埋分布式辅助阳极地床和燃气管道电连接,阴极保护效果测试反馈装置由长效参比电极、测试片、电缆及测试桩组成；太阳能电池板用于将太阳能转换为电能,太阳能控制器用于将电能输送给太阳能电池组,太阳能电池组用于存储电能,直流电源用于为开放式阴极保护系统提供直流电流,直流电源输出功率≤300W,输出电流≤5A；其具有结构简单、成本低廉的优点,解决了低压燃气管网开放式阴极保护直流供电的问题；安装方法具有工艺简单、施工效率高的特点。(The invention relates to an open cathode protection solar power supply system of a low-voltage gas pipe network and an installation method thereof, wherein the system comprises a solar cell panel, a solar controller, a solar battery pack, a direct-current power supply and a cathode protection effect test feedback device, wherein the positive electrode and the negative electrode of the direct-current power supply are correspondingly and electrically connected with a shallow-buried distributed auxiliary anode ground bed and a gas pipeline, and the cathode protection effect test feedback device consists of a long-acting reference electrode, a test piece, a cable and a test pile; the solar cell panel is used for converting solar energy into electric energy, the solar controller is used for transmitting the electric energy to the solar cell array, the solar cell array is used for storing the electric energy, the direct-current power supply is used for providing direct current for the open cathode protection system, the output power of the direct-current power supply is less than or equal to 300W, and the output current is less than or equal to 5A; the low-voltage gas pipe network open cathode protection direct current power supply device has the advantages of simple structure and low cost, and solves the problem of open cathode protection direct current power supply of a low-voltage gas pipe network; the installation method has the characteristics of simple process and high construction efficiency.)

1. The open type cathode protection solar power supply system of the low-voltage gas pipe network is characterized by comprising a solar cell panel (1), a solar controller (2), a solar cell group (3), a direct-current power supply (4) and a cathode protection effect test feedback device (7) which are sequentially connected, wherein the positive electrode of the direct-current power supply (4) is electrically connected with a shallow-buried distributed auxiliary anode ground bed (5) through a cable, and the negative electrode of the direct-current power supply (4) is electrically connected with a gas pipeline (6) through a cable; the solar energy conversion system is characterized in that the solar cell panel (1) is used for converting solar energy into electric energy, the solar controller (2) is used for conveying the electric energy generated by the solar cell panel (1) to the solar cell set (3), the solar cell set (3) is used for storing the electric energy, and the direct current power supply (4) is used for supplying power for cathode protection.

2. The open cathode protection solar power supply system of a low-voltage gas pipe network according to claim 1, wherein the cathode protection effect test feedback device (7) comprises a long-acting reference electrode, a test piece, a cable and a test pile which are arranged beside the pipeline, a first terminal (71) in the test pile is electrically connected with the gas pipeline (6) through the cable, a second terminal (72) in the test pile is electrically connected with the test piece (8) and the reference electrode (9) through the cable, and the cathode protection effect test feedback device (7) is used for testing the protection potential of the gas pipeline and feeding test data back to the direct current power supply to adjust the output voltage and the output current of the direct current power supply.

3. The open cathodic protection solar power supply system of the low-pressure gas pipe network according to claim 2, characterized in that said shallow buried distributed auxiliary anode ground bed (5) is made of high silicon cast iron or mixed metal oxide.

4. The open cathode protection solar power supply system of the low-pressure gas pipe network according to claim 2, wherein the solar panel (1) is a monocrystalline silicon double plate, and the output power of the solar panel (1) is 100-300W.

5. The open cathode protection solar power supply system of low-pressure gas pipe network according to claim 2, characterized in that the solar controller (2) is a 24V/5A charge-discharge controller.

6. The open cathode protection solar power supply system of the low-pressure gas pipe network according to claim 2, wherein the solar battery (3) is a maintenance-free energy storage colloid storage battery, and the voltage of the solar battery (3) is 12-24V.

7. The open cathode protection solar power supply system of a low-pressure gas pipe network according to claim 2, wherein the conversion voltage of the direct current power supply (4) is 12V-24V.

8. The open cathode protection solar power supply system of low-pressure gas pipe network according to claim 2, wherein the test strip (8) is made of the same material as the gas pipe, and the reference electrode (9) is CuSO₄And (5) manufacturing.

9. A method for installing the open cathode protection solar power supply system of the low-pressure gas pipe network according to claim 2, comprising the following steps:

firstly, according to the buried position of a gas pipeline (6), burying a shallow buried distributed auxiliary anode ground bed (5) and leading out a cable electrically connected with the shallow buried distributed auxiliary anode ground bed (5) to the ground;

secondly, digging the ground on the side surface of the gas pipeline (6), welding a cable electrically connected with the gas pipeline (6), backfilling, and leading the cable electrically connected with the gas pipeline (6) out of the ground;

thirdly, respectively installing a solar cell panel (1), a solar controller (2), a solar battery pack (3) and a direct-current power supply (4) according to the buried position of the shallow-buried distributed auxiliary anode ground bed (5);

and fourthly, the solar cell panel (1), the solar controller (2), the solar battery pack (3) and the direct-current power supply (4) are sequentially connected, and the positive and negative electrodes of the direct-current power supply (4) are correspondingly and electrically connected with the shallow-buried distributed auxiliary anode ground bed (5) and the gas pipeline (6).

10. The method for installing the low-pressure gas pipe network open-type cathodic protection solar power supply system according to claim 9, characterized by further comprising the following steps:

fifthly, according to the buried position of the shallow buried distributed auxiliary anode ground bed (5), a cathode protection effect test feedback device (7), a test piece (8) and a reference electrode (9) are buried, a first terminal (71) in the cathode protection effect test feedback device (7) is electrically connected with a gas pipeline (6) through a cable, and a second terminal (72) in the cathode protection effect test feedback device (7) is electrically connected with the test piece (8) and the reference electrode (9) through the cable.

Technical Field

The invention relates to a power supply system of an open cathode protection system, in particular to a low-voltage gas pipe network open cathode protection solar power supply system and an installation method thereof.

Background

With the rapid development of economy, natural gas resources are widely utilized, and the scale of urban gas pipe networks is continuously enlarged. In recent years, with the increasingly complex underground service environment of buried gas pipe networks, gas pipeline corrosion leakage accidents frequently occur, statistics shows that the leakage accidents caused by corrosion of Beijing gas pipe networks are more than 200 per year, wherein 90% of corrosion accidents occur on pipelines without applied cathode protection, mainly concentrate on low-pressure cell pipe networks, and more corrosion leakage accidents occur in some cells within half a year. The frequent leakage threatens the safety production of the gas pipe network and brings inconvenience to the life of residents.

At present, most of low-pressure pipe networks only carry out external corrosion protection through an anticorrosive coating, and do not apply cathodic protection, and the performance can be reduced year by year along with the increase of the running time due to the poor quality of the anticorrosive coating. Therefore, the low-pressure pipe network is not effectively protected and is exposed to corrosion risks. The cathode protection technology is adopted for solving the problem of external corrosion, the quality of an anticorrosive layer of a low-voltage pipe network is poor, the current demand is large, the attenuation is fast, and the conventional sacrificial anode cannot meet the actual demand due to small output current and high consumption rate; the method for externally adding the current can provide larger current, has long service life, needs a direct current power supply and can interfere with the outside, needs to develop a special low-voltage pipe network open cathode protection technology in order to solve the problems of the direct current power supply and the possibility of interfering with the outside, adopts the shallow-buried distributed auxiliary anode ground bed, avoids current concentration, reduces the interference with the outside to the maximum extent, and simultaneously utilizes a solar power supply system to provide cathode protection current for the shallow-buried distributed auxiliary anode ground bed.

Disclosure of Invention

The invention aims to provide an open type cathode protection solar power supply system for a low-voltage gas pipe network and an installation method thereof, wherein the solar power supply system has the advantages of simple structure, low cost, safety, reliability and strong applicability, and solves the problem that the low-voltage pipe network cannot provide commercial power to influence the application of impressed current cathode protection; the installation method has the characteristics of simple process and high construction efficiency.

In order to solve the problems in the prior art, the open cathode protection solar power supply system for the low-voltage gas pipe network comprises a solar cell panel, a solar controller, a solar cell group, a direct-current power supply and a cathode protection effect test feedback device which are sequentially connected, wherein the positive electrode of the direct-current power supply is electrically connected with a shallow-buried distributed auxiliary ground bed through a cable, and the negative electrode of the direct-current power supply is electrically connected with a gas pipeline through a cable; the solar energy controller is used for transmitting electric energy generated by the solar energy panel to the solar battery pack, the solar battery pack is used for storing the electric energy, and the direct current power supply is used for supplying power for cathode protection.

Furthermore, the open cathode protection solar power supply system of the low-voltage gas pipe network comprises a long-acting reference electrode, a test piece, a cable and a test pile which are arranged beside a pipeline, wherein a first terminal in the test pile is electrically connected with the gas pipeline through the cable, a second terminal in the test pile is electrically connected with the test piece and the reference electrode through the cable, and the cathode protection effect test feedback device is used for testing the protection potential of the gas pipeline and feeding test data back to a direct-current power supply for adjusting the output voltage and the output current of the direct-current power supply.

Further, the open cathode protection solar power supply system of the low-pressure gas pipe network is characterized in that the shallow-buried distributed auxiliary anode ground bed is made of high-silicon cast iron or mixed metal oxide.

Further, the low-pressure gas pipe network open cathode protection solar power supply system is characterized in that the solar cell panel is a monocrystalline silicon double-plate, and the output power of the solar cell panel is 100W-300W.

Further, the low-pressure gas pipe network open cathode protection solar power supply system is characterized in that the solar controller is a 24V/5A charge-discharge controller.

Furthermore, the low-voltage gas pipe network open cathode protection solar power supply system is characterized in that the solar battery pack is a maintenance-free energy storage colloid storage battery pack, and the voltage of the solar battery pack is 12-24V.

Further, the open cathode protection solar power supply system of the low-voltage gas pipe network is characterized in that the conversion voltage of the direct-current power supply is 12-24V.

Furthermore, the open cathode protection solar power supply system of the low-pressure gas pipe network is characterized in that the test piece is made of the same material as the gas pipeline, and the reference electrode is made of CuSO₄And (5) manufacturing.

The invention discloses an installation method of an open cathode protection solar power supply system of a low-pressure gas pipe network, which comprises the following steps of:

firstly, according to the buried position of a gas pipeline, burying a shallow buried distributed auxiliary anode ground bed and leading out a cable electrically connected with the shallow buried distributed auxiliary anode ground bed to the ground;

secondly, digging the ground on the side surface of the gas pipeline, backfilling after welding the cable electrically connected with the gas pipeline, and leading the cable electrically connected with the gas pipeline out of the ground;

thirdly, respectively installing a solar cell panel, a solar controller, a solar battery pack and a direct-current power supply according to the buried position of the shallow-buried distributed auxiliary anode ground bed;

and fourthly, sequentially connecting the solar cell panel, the solar controller, the solar battery pack and the direct-current power supply, and correspondingly electrically connecting the positive electrode and the negative electrode of the direct-current power supply with the shallow-buried distributed auxiliary anode ground bed and the gas pipeline.

Further, the installation method of the low-pressure gas pipe network open cathode protection solar power supply system further comprises the following steps:

and fifthly, burying the cathodic protection effect test feedback device, the test piece and the reference electrode according to the buried position of the shallow buried distributed auxiliary anode ground bed, electrically connecting a first terminal in the cathodic protection effect test feedback device with the gas pipeline through a cable, and electrically connecting a second terminal in the cathodic protection effect test feedback device with the test piece and the reference electrode through the cable.

Compared with the prior art, the open cathode protection solar power supply system of the low-pressure gas pipe network and the installation method thereof have the following advantages: according to the invention, the solar panel, the solar controller, the solar battery pack, the direct-current power supply and the cathode protection effect test feedback device are arranged, and the anode of the direct-current power supply is electrically connected with the shallow-buried distributed auxiliary anode ground bed through a cable, so that the cathode of the direct-current power supply is electrically connected with the gas pipeline through the cable; the solar cell panel is used for converting solar energy into electric energy, the solar controller is used for conveying the electric energy generated by the solar cell panel to the solar cell panel, the solar cell panel is used for storing the electric energy, the direct-current power supply is used for supplying power for cathode protection, and the cathode protection effect test feedback device is used for testing the protection potential of the gas pipeline and feeding test data back to the direct-current power supply for adjusting the output voltage and the output current of the direct-current power supply. Therefore, the cathode protection solar power supply system for the gas pipe network is simple in structure, low in cost, safe, reliable and high in applicability. According to the invention, the solar cell panel, the solar controller, the solar cell group, the direct-current power supply and the cathode protection effect test feedback device are arranged, and the direct-current power supply supplies power for cathode protection, so that a new power supply selection is provided for impressed current cathode protection, the problem that the impressed current cathode protection application is influenced due to the fact that commercial power cannot be provided in a low-voltage pipe network area is solved, the safety of a gas pipe network is ensured, and the device has the characteristics of convenience in installation and small floor area. The installation method of the cathodic protection solar power supply system has the advantages of simple process and high construction efficiency.

The following describes the open cathode protection solar power supply system and the installation method of the low-pressure gas pipe network in detail with reference to the specific embodiments shown in the drawings.

Drawings

Fig. 1 is a schematic diagram of the open cathode protection solar power supply system of the low-pressure gas pipe network.

Detailed Description

First, it should be noted that, the directional terms such as up, down, left, right, front, rear, etc. described in the present invention are only described with reference to the accompanying drawings for easy understanding, and do not limit the technical solution and the claimed scope of the present invention.

As shown in fig. 1, the embodiment of the open cathode protection solar power supply system for a low-voltage gas pipe network of the present invention includes a solar panel 1, a solar controller 2, a solar battery 3, a dc power supply 4 and a cathode protection effect test feedback device 7, which are connected in sequence, and the positive electrode of the dc power supply 4 is electrically connected to a shallow-buried distributed auxiliary anode ground bed 5 through a cable, and the negative electrode of the dc power supply 4 is electrically connected to a gas pipe 6 through a cable. The solar battery pack comprises a solar battery panel 1, a solar controller 2, a solar battery pack 3, a direct-current power supply 4 and a solar battery controller, wherein the solar battery panel 1 is used for converting solar energy into electric energy, the solar controller 2 is used for transmitting the electric energy generated by the solar battery panel 1 to the solar battery pack 3, the solar battery pack 3 is used for storing the electric energy, and the direct-current power supply 4 is used for supplying power for.

The open type cathode protection solar power supply system for the low-pressure gas pipe network is simple in structure, low in cost, safe, reliable and high in applicability. According to the invention, the solar cell panel 1, the solar controller 2, the solar battery pack 3, the direct-current power supply 4 and the cathode protection effect test feedback device 7 are arranged, and the direct-current power supply 4 supplies power for cathode protection, so that a new power supply selection is provided for impressed current cathode protection, the problem that the impressed current cathode protection application is influenced due to the fact that commercial power cannot be supplied in a low-voltage pipe network area is solved, the safety of a gas pipe network is ensured, and the device has the characteristics of convenience in installation and small floor area.

As a specific embodiment, the invention provides the cathode protection effect test feedback device 7 with a long-acting reference electrode, a test piece, a cable and a test pile, and electrically connects a first terminal 71 in the test pile with the gas pipeline 6 through the cable and electrically connects a second terminal 72 in the test pile with the test piece 8 and the reference electrode 9 through the cable. The device can be used for testing the protection potential of the gas pipeline, feeding test data back to the direct current power supply, adjusting the output voltage and the output current of the direct current power supply and enhancing the functionality and the practicability.

As a specific implementation mode, the shallow buried distributed auxiliary anode ground bed 5 is made of high-silicon cast iron or mixed metal oxide; the solar cell panel 1 adopts a monocrystalline silicon double-panel, so that the output power of the solar cell panel 1 is 100-300W; the solar controller 2 adopts a 24V/5A charge-discharge controller; the solar battery pack 3 adopts a maintenance-free energy storage colloid storage battery pack, and the voltage of the solar battery pack 3 is 12V-24V; the conversion voltage of the direct current power supply 4 is 12V-24V; the test piece 8 is made of the same material as the gas pipeline, and the reference electrode 9 is made of CuSO₄And manufacturing to improve the testing precision.

Based on the same conception, the invention also provides an installation method of the low-pressure gas pipe network open type cathode protection solar power supply system, which specifically comprises the following steps:

firstly, according to the buried position of the gas pipeline 6, burying the shallow buried distributed auxiliary anode ground bed 5 and leading out a cable electrically connected with the shallow buried distributed auxiliary anode ground bed 5 to the ground.

Secondly, digging the ground on the side surface of the gas pipeline 6, welding the cable electrically connected with the gas pipeline 6, backfilling, and leading the cable electrically connected with the gas pipeline 6 out of the ground.

And thirdly, respectively installing a solar cell panel 1, a solar controller 2, a solar battery pack 3 and a direct-current power supply 4 according to the buried position of the shallow-buried distributed auxiliary anode ground bed 5.

And fourthly, sequentially connecting the solar cell panel 1, the solar controller 2, the solar battery pack 3 and the direct-current power supply 4, and correspondingly electrically connecting the positive electrode and the negative electrode of the direct-current power supply 4 with the shallow-buried distributed auxiliary anode ground bed 5 and the gas pipeline 6.

Further, the installation method of the open cathode protection solar power supply system of the low-pressure gas pipe network further comprises the following steps:

fifthly, according to the buried position of the shallow buried distributed auxiliary anode ground bed 5, burying the cathode protection effect test feedback device 7, the test strip 8 and the reference electrode 9, electrically connecting a first terminal 71 in the cathode protection effect test feedback device 7 with the gas pipeline 6 through a cable, and electrically connecting a second terminal 72 in the cathode protection effect test feedback device 7 with the test strip 8 and the reference electrode 9 through a cable.

The installation method of the cathodic protection solar power supply system provided by the invention has the characteristics of simple process, high construction efficiency, safety and reliability.

The above examples are only for describing the preferred embodiments of the present invention, and do not limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the invention defined by the claims without departing from the design concept of the present invention.