RU172279U1 - BLOCK AND COMPLETE DEVICE OF ELECTROCHEMICAL PROTECTION - Google Patents

Abstract

BKU EKhZ block-complete device for electrochemical protection is designed to protect underground metal structures (gas pipelines, oil pipelines, product pipelines, etc.) from electrochemical corrosion in various climatic conditions. The technical result of the claimed utility model is the expansion of the arsenal of block-complete devices for electrochemical protection (BKU EKhZ), namely, the creation of BKU EKhZ of increased reliability, ensuring uninterrupted operation of cathodic protection stations of underground metal structures (gas pipelines, oil pipelines, product pipelines, etc.) from electrochemical corrosion . The technical result is achieved by the fact that BKU EKhZ, containing a transportable, insulated block container, the inner space of which is divided into compartments in which a low voltage switchgear (RVN), an auxiliary shield, and gas pipeline electrochemical protection equipment (ECP) are installed, in the form of a main and a backup cathodic protection station (RMS), and a device for automatically switching on a backup cathodic protection station (ATS RMS), while the RUNN is connected to the main power source by its input, and A cut-in automatic circuit breaker is connected to a bus voltage of 220V and a frequency of 50 Hz, to which, in turn, a self-service shield (SHSN) is connected via a circuit breaker, and through the AVR SKZ device and the first, second, third, fourth circuit breakers are connected with the possibility of alternating tripping and reserve VHC. A complete transformer substation (KTP) and / or a photovoltaic installation on solar modules and / or a wind energy installation can serve as the main source of power supply. For uninterrupted power supply of equipment, BKU EKhZ may contain a guaranteed power source in the form of a battery connected to electrical equipment with a voltage of 220 V at a frequency of 50 Hz through a reserve circuit breaker. 1 n.p., 3 c.p., 4 ill.

Description

IPC H02J9 / 00

Block-complete device for electrochemical protection (BKU EKhZ)

The block-complete electrochemical protection device BKU EKhZ is designed to protect underground metal structures (gas pipelines, oil pipelines, product pipelines, etc.) from electrochemical corrosion in various climatic conditions

The level of technology.

It is known BKU ECP of the Ozersky plant of power plants ( http://www.ozeu.ru/catalog/ehz/bku-exz.shtml ) [1], made in the form of a spatial frame - panel supporting structure, with a layer of insulation coated with outer casings.

Known block box for the placement of equipment ECP, manufacturer FSUE "Combine" Electrochempribor "( http://www.ehp-atom.ru/blok_boksy.html ) [2], which is a frame structure. The block box has a cable entry, with the help of which the electrochemical equipment is energized. Inside, there is the necessary electrical equipment for heating and lighting the premises, sockets are provided for connecting additional electrical equipment. The block box can be connected to a fire alarm system; effective controlled ventilation is provided. The equipment of the block boxes ensures operability in the temperature range from -50 to +50 ⁰ С

A well-known block box of power supply to linear consumers, containing devices for electrochemical protection of pipelines against corrosion according to the utility model patent No. 38792 [3] (patent holder - Experimental Power Plants CJSC), is designed to distribute electricity in places where it is difficult to build stationary power plants. The block box is made in the form of a transportable container, divided in series into compartments isolated from each other by fire-resistant partitions. Power oil transformers are located in one compartment, and a switchgear and electrochemical devices for corrosion protection of pipelines are installed in the other compartment. The box is connected to the overhead power line through insulators installed on the roof.

It is known BKU ECC "MERCURY-2" manufactured by JSC "ENERGOPROM" (http://www.enprom.ru/rus/catalogue/good.htm?cat=7&good=29) [4], designed to protect against corrosion and corrosion monitoring underground metal communications and structures. BKU ECP “Mercury-2” are intended for:

• receiving, converting electrical energy of three-phase alternating current of a frequency of 50 Hz with a voltage of 6 (10) kV to a voltage of 0.4 kV;

• distribution of electricity with a voltage of 0.4 kV at facilities for the collection, transport and treatment of oil and gas;

• management and corrosion protection of underground structures (gas pipelines, oil pipelines, product pipelines, etc.) and communications;

• receiving and issuing signals to the telemechanics system (TM) about the state of protected objects.

The BKU ECP “Mercury-2” device consists of five main compartments - the UVN compartment, the power transformer chamber, the RUNN compartment, the ECP compartment and the TM compartment, separated by fireproof partitions.

High voltage air inlet at the Mercury-2 BHECC is carried out using the lateral intake portal of the air inlet

In the RUNN compartment, a device for input and distribution of low-voltage electricity (RUNN-0.4 kV) is installed;

In the compartment ECP installed:

cathodic protection devices;

devices for automatically switching on the backup converter;

complexes of modular equipment ECP.

The well-known BKU EKhZ solves the problem of ensuring the reliability of corrosion protection by increasing the level of quality and reliability of external power supply to ECP devices. Used UGP on the basis of inverters and blocks of maintenance-free liquid or helium batteries.

The technical result of the claimed utility model is the expansion of the arsenal of block-complete devices of electrochemical protection (BKU EKhZ), namely, the creation of a block-complete device of electrochemical protection of increased reliability, ensuring uninterrupted operation of cathodic protection stations of underground metal structures (gas pipelines, oil pipelines, product pipelines, etc. ) from electrochemical corrosion.

The essence of the utility model.

The technical result is achieved by the fact that a block-complete device for electrochemical protection (BKU EKhZ), containing a transportable, insulated block container, the inner space of which is divided into compartments in which a low-voltage switchgear (LVPS), an auxiliary shield, electrochemical protection equipment is installed a gas pipeline (ECP), in the form of a primary and backup cathodic protection station (SCZ), and a unit for automatically switching on a backup cathodic protection station, while the distribution unit The low voltage device (LVLV) is connected by its input to the main power supply, and through the input circuit breaker is connected to a bus voltage of 220V with a frequency of 50 Hz, to which, in turn, through the circuit breaker is connected an auxiliary shield (SHSN), and through the backup automatic switch SKZ and the first, second, third, fourth circuit breakers are connected with the possibility of alternating tripping of the main and backup cathodic protection stations.

In this case, a complete transformer substation (KTP) and / or a photovoltaic installation on solar modules and / or a wind energy installation (not shown) can serve as the main power source.

At the same time, for uninterrupted power supply of equipment, BKU EKhZ may contain a guaranteed power source in the form of a rechargeable battery connected to electrical equipment by a bus voltage of 220 V and a frequency of 50 Hz through an automatic reserve switch.

Disclosure of a utility model.

Enumeration of figures.

FIG. 1. BKU ECP, general view.

FIG. 2. The section along AA in FIG. one.

FIG. 3. The section according to BB in figure 1.

FIG. 4. Structural electrical diagram of the connections BKU ECP.

The list of positions.

1 - block container;

2 - external power supply;

3 - switchgear low voltage 0.4 / 0.23 kV;

4 - shield of own needs (ЩСН);

5 - introductory circuit breaker;

6 - bus 220V with a frequency of 50 Hz;

7 - automatic switchboard of the shield of own needs (ЩСН);

8 - a device for automatically switching on standby SKZ (AVR SKZ);

9 - the first circuit breaker ABP SKZ;

10 - second circuit breaker ABP SKZ;

11 - the third circuit breaker of the main SKZ;

12 - fourth automatic circuit breaker backup SKZ;

13 - main cathodic protection station;

14 - backup cathodic protection station;

15 - automatic reserve switch;

16 - cabinet fire alarm

17 - rechargeable batteries.

The block-complete device for electrochemical protection (BKU EKhZ) consists of a transportable, heat-insulated block container 1 of full factory readiness. A general view of the CCU ECP is shown in FIG. one.

BKU ECP is made in the form of a rectangular welded metal case with its own power steel frame, which is capable of transporting loads, without external windows. The walls and roof of the insulated block container BKU EKhZ are made using sandwich panels as independent enclosing structures, with metal cladding and an insulating layer with enhanced thermal characteristics.

 The design of BKU EKhZ provides embedded parts for fastening the elements placed inside the equipment. The design of BKU EKhZ also provides for air or cable sealed bushings for supply and outgoing lines.

The internal space of the block container 1 is divided into compartments in which are located: a low voltage switchgear (LV voltage switchgear) 3; shield 4 own needs; gas pipeline electrochemical protection equipment (ECP), comprising: cathodic protection stations (SCZ) 13,14 (including joint protection units; elements of corrosion monitoring systems, lightning overvoltage protection unit (not shown), device 8 for automatically switching on the backup SKZ (AVR SKZ); cabinet fire alarm 16 (Fig.2,3).

Switchgear low voltage (LVL) 3 through its input 2 is connected to the main power source. A complete transformer substation (KTP) and / or a photovoltaic installation on solar modules and / or a wind power installation (not shown) can serve as the main source of power supply.

  RUNN 3 through an introductory circuit breaker 5 is connected to a bus 6 voltage 220V with a frequency of 50 Hz. The auxiliary needs shield (SHCHS) 4 is connected to bus 6 through an automatic switch 7, and the first 9, second 10, third 11, and fourth 12 circuit breakers are connected to the cathodic protection station main 13 and backup 14 through a backup circuit breaker (ATS SKZ); .

For uninterrupted power supply of equipment BKU ECP can contain a guaranteed power source in the form of a rechargeable battery 17 (figure 2) connected to the electrical equipment by bus 6 through a circuit breaker 15 (figure 4).

In the case of the use of a complete transformer substation (KTP) as a main power source, the BKU EHZ can be made of two isolated compartments, each equipped with its own input. In one of the compartments there is a transformer substation and a low voltage device, in the other compartment there is a primary and backup cathodic protection station SKZ 13 and 14 with ATS SKZ 8.

 Electrical equipment BKU ECP is installed and fixed to the frame structures of the walls and partitions of the compartments in place with the help of embedded parts and connected to each other by electric cables.

 Protection of electrical equipment of BKU EKhZ from surge surges in input / output cable circuits is ensured by installing an atmospheric (lightning) surge protection block in SCZ 13.14 (not shown).

Work BKU ECP.

 From an external source with a voltage of 220V and a frequency of 50 Hz, power is supplied to input 2 of the LVHV 3 and then through an input circuit breaker 5 to a bus 6 with a voltage of 220V and a frequency of 50 Hz. From this bus, through the circuit breaker 7, power is supplied to the auxiliary needs panel 4 (SHCHSN), and through the automatic switching device of the backup SKZ 8 and circuit breakers 9, 10, 11, 12 to the cathodic protection station 13, 14.

Protection of underground metal structures (gas pipelines, oil pipelines, product pipelines, etc.) from electrochemical corrosion is provided by one of the cathodic protection stations - the main 13 or backup 14. If a working station fails, for example, 13, ATS SKZ 8 disconnects it from bus 6 and connects a backup station 14 to it.

In order to reserve electricity, the main source supplies voltage to the bus 6 through the switch 15 to charge the battery 17.

The inventive BKU ECP allows for the uninterrupted operation of cathodic protection stations of underground metal structures (gas pipelines, oil pipelines, product pipelines, etc.) from electrochemical corrosion.

 Industrial applicability.

 The complete set of the claimed BKU ECP can be performed both on the basis of equipment of domestic manufacturers, and on the basis of imported devices.

The design of the BKU EKhZ ensures uninterrupted operation, safe and convenient operation of the equipment, as well as the possibility of its transportation by road, rail and water transport, as well as moving by means of hoisting vehicles.

INFORMATION SOURCES.

1.BKU ECP of the Ozersky plant of power plants. Internet resource http://www.ozeu.ru/catalog/ehz/bku-exz.shtml ).

2. Block-box for the placement of ECP equipment, manufacturer of FSUE “Electrokhimpribor Combine. Internet resource http://www.ehp-atom.ru/blok_boksy.html ).

3. Patent for utility model of the Russian Federation No. 38792 Block box for power supply of linear consumers, published on July 10, 2004.

4. BKU ECP “MERCURY-2” manufactured by OJSC “ENERGOPROM”. Internet resource: http://www.enprom.ru/rus/catalogue/good.htm?cat=7&good=29 .

Claims (4)

1 Block-complete electrochemical protection device containing a transportable, insulated block container, the inner space of which is divided into compartments in which a low voltage switchgear, auxiliary switchboard, gas pipeline electrochemical protection equipment in the form of primary and backup cathodic protection stations, and a device are installed automatic activation of the backup cathodic protection station, while the low-voltage switchgear is connected by its input to the main and a power supply device, and through an input circuit breaker is connected to a bus voltage of 220V with a frequency of 50 Hz, to which, in turn, a self-service shield is connected through a circuit breaker, and through the device for automatically switching on the backup cathodic protection station and the first, second, third, fourth circuit breakers connected with the possibility of alternating disconnection of the main and backup cathodic protection stations.
2. The block-complete device according to claim 1, characterized in that the main power source can be a complete transformer substation and / or a photovoltaic installation on solar modules, and / or a wind energy installation.
3. The block-complete device according to claim 1, characterized in that for uninterrupted power supply of the equipment it contains a guaranteed power source in the form of a rechargeable battery connected to the electrical equipment by a 220V bus with a frequency of 50 Hz through a reserve circuit breaker.
4. The block-complete device according to claim 1, characterized in that it can be made of two isolated compartments, each equipped with its own input, in one of which is a complete transformer substation and a low voltage device, in the other compartment - the main and backup cathodic stations protection with automatic inclusion of a backup cathodic protection station.

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