RU149328U1 - CABINET CROSS SHK1 COMPLEX OF HIGHER RELIABILITY SOFTWARE AND SOFTWARE - Google Patents

Abstract

A cross-section cabinet of a complex of technical and software tools of increased reliability for automating the control of technological equipment of power plants, characterized in that it contains relays associated with load resistances and terminal blocks forming a switching field for the exchange of information signals with transit circuits, and vibration-resistant terminal blocks for internal and external switching for connecting cable and wire conductors with a cross section from 0.03 mm to 2.5 mm "under the clamp".

Description

The field of technology.

The utility model relates to the field of energy, electrical engineering and automation and can be used to build automated control systems and technological processes of power plants.

State of the art

Currently, well-known cabinets in general are used to place remote control units, to form technological protection teams; signaling, analog-discrete signal conversion, logical signal conversion, time delays, voltage conversion, providing in-cabinet connections between blocks and cross terminal blocks.

For example, a device for the cabinet of current signals UKTS-M of a unified complex of technical equipment (UKTS), designed to cross input and output circuits, as well as to place and provide operating conditions for service and functional units and power supplies in accordance with their technical characteristics, UKTS controls equipment technological systems of nuclear power plants. UKTS performs the functions of controlling technological parameters and controlling equipment of technological systems in accordance with the algorithms specified in UKTS. In emergency conditions, when the initiating event is generated, UKTS provides the necessary signals for the impact on the mechanisms and electrical fittings of technological safety systems. The mechanisms are started in a certain sequence, the closing / opening of valves occurs in accordance with the logic of the operation of technological systems. UKTS provides for the centralized testing of protective devices (CCP) in normal operation without issuing control commands in order to identify defects and failures that are not detected during operation.

In the UKTS complexes, the input (measurement of values) of analog signals takes place, the input of discrete signals that determine the state of the equipment and technological processes of the NPP power unit, the logical processing, the output of control commands and alarm cabinets (current signals) of the UKTS-M.

Known cabinet current signals KCO KTPS-PN for collecting data on the state of the technological equipment of nuclear power plants, consisting of three racks, one of which is used to install service units: power supplies, voltage control unit, network devices, the second and third are used to install functional units, providing the collection of analog signals - unified DC and voltage signals, signals from thermocouples and resistance thermocouples, as well as the collection and generation of discrete signals, moreover, functional oki have a redundant internal structure of the input signal conversion and are combined by a local highway according to the RS-485 standard, which provides the possibility of sequential polling of function blocks with a cycle of less than 20 ms, while filters are integrated into the function blocks to suppress sinusoidal noise at frequencies of 50 and 60 Hz, at the same time, galvanic isolation in digital circuits and high-precision measuring ADCs are used in analog blocks, and cabinet communication lines from the inputs of functional blocks to Tractors are duplicated completely (see Utility Model Patent RU 136608, 01/10/2014).

The cabinet of current signals UKTS-M is the closest technical solution.

The cabinet of current signals UKTS-M is designed to accommodate and provide operating conditions for a set of service and logical blocks of UKTS-M: remote control units, technological protections; signaling, analog-discrete signal conversion, distribution of a unified signal, voltage stabilizers, mounting between mating connectors of blocks and cross terminal blocks.

The cabinet of current signals UKTS-M provides:

- input of analog signals for their conversion into a discrete signal;

- input of discrete signals about the state of technological equipment or after algorithmic processing of signals from neighboring cabinets of the complex;

- output of discrete control and signaling signals or transmission of discrete signals for further algorithmic processing.

The disadvantages of the cabinet of current signals UKTS-M include:

- a soldered field of logical wire connections between functional blocks and intracabin electrical wiring;

- the need to maintain the temperature in the cabinet not higher than 40 ° C by organizing forced cooling (installation of fans);

- screw clamps on XT fields requiring periodic broaching;

- designated service life of 10 years;

- low reliability of equipment, MTBF of 50,000 hours.

Known cross modular cabinet, including optical modules, mounted in the base of the blocks of optical modules, having the ability to rotate to provide free access to them, while on its back wall there is a compartment for receiving patch cords from optical modules, limited by angles of the compartment for receiving patch cords from optical modules, organizer for laying out excess patch cords, equipped with coils with plates that limit the compartment for input, mounting, grounding and cutting cables with cable entries installed in it universal, mounted removable bases of blocks of optical modules, equipped with removable drop-shaped optical modules, in which there is a limited area for installing a splice cassette with a lodgement, a channel for introducing a transport tube with optical fiber, a removable adapter panel, a shelf for removing patch cords from the adapter panel in the patch cord receiving compartment, the area for installing PLC splitters on the splitters holders, in addition, removable optical modules can be rotated so that provide access to the splice cassettes and splitters installed in them (see Utility Model Patent RU 127490, 04/27/2013).

UKTS manages the equipment of technological systems of nuclear power plants. UKTS performs the functions of controlling technological parameters and controlling equipment of technological systems in accordance with the algorithms specified in UKTS. In emergency conditions, when the initiating event is generated, UKTS provides the necessary signals for the impact on the mechanisms and electrical fittings of technological safety systems. The mechanisms are started in a certain sequence, the closing / opening of valves occurs in accordance with the logic of the operation of technological systems. UKTS provides for the centralized testing of protective devices (CCP) in normal operation without issuing control commands in order to identify defects and failures that are not detected during operation.

The operability of equipment providing the technological process of nuclear power plants is subject to national and international safety requirements.

In UKTS complexes, input (measurement of values) of analog signals takes place, input of discrete signals that determine the state of equipment and technological processes of a nuclear power unit, logical processing, output of control and signaling commands by UKTS-M cross cabinets.

Cross cabinet UKTS-M is the closest technical solution.

The UKTS-M crossover cabinet is designed to accommodate cross terminal blocks and resistors for receiving discrete signals with a voltage of 220 V and converting them into output signals with a voltage of 24 V.

Cross cabinet UKTS-M provides:

- input of discrete signals with voltage of 220 V and their conversion into output signals with voltage of 24 V;

- placement of relays, load resistances and terminal blocks forming a switching field through which information signals are exchanged and transit circuits are passed.

The disadvantages of the UKTS-M crossover cabinet include:

- screw clamps on XT fields requiring periodic broaching;

- designated service life of 10 years;

- low reliability of equipment, MTBF of 50,000 hours.

The technical result is to increase the reliability of the designed and implemented cross-section cabinet ШК1 КТПС-ПН of the complex of technical and software tools of increased reliability (КТПС-ПН), which was a further development of UKTS with the use of new technologies, a new element base, and advanced technical solutions.

The claimed technical result is achieved in the device as follows —device cross cabinet (ШК1 КТПС-ПН) of a complex of technical and software tools of high reliability for automation of control of technological equipment of power plants, characterized in that it additionally contains relays associated with load resistances and terminal blocks forming switching field for the exchange of information signals with the passage of transit circuits, and additional vibration-proof WAGO terminal blocks for internal external switching for connecting cable conductors and the conductor cross section of 0.03 mm ² to 2.5 mm ² "under the clamp."

The claimed utility model is designed to accommodate relays, load resistances and terminal blocks that form a switching field through which information signals are exchanged and transit circuits are passed.

The cabinet is a matching device between the signal source 220 V AC or DC and the functional blocks of KTPS-PN. Some terminals of the switching field of the cabinet can be used as intermediate terminals for transit electrical circuits with a voltage of 220 V.

The cabinet is based on a unified design and provides connection and operation of up to 192 relays, which allows processing information from 45 valves and 6 engines.

The cabinet provides:

- receiving 288 discrete signals from various sensors that form a discrete signal of direct or alternating current 220 V;

- the issuance of 288 discrete signals with a voltage of 19.2-26.4 V, to blocks having inputs intended for receiving signals with galvanic separation of the circuit and having an input impedance equal to 1500 Ohms.

The cabinet includes 72 cross-section bars.

Each cross-section cabinet ШК1 provides matching voltage signals necessary to control one actuator.

Cross cabinet ШК1 КТПС-ПН is an integral part of the complex of technical and software tools of increased reliability, designed to create by design a system of automated control and monitoring of technological processes and transfer information about the state of technical equipment of the cabinet and technological equipment to the upper block or station level system.

The designated service life of the cabinet is at least 30 years.

MTBF of at least 100,000 hours

A high MTBF of the crossover cabinet ШК1 КТПС-ПН is achieved through the use of highly reliable electronic components.

Additionally, cross cabinet ШК1КТПС-ПН has the following features that are not available in the analogue.

WAGO original, high reliability and vibration resistance terminal blocks for internal and external switching are installed in the cabinet, allowing connecting cable and wire conductors with a cross section from 0.08 mm ² to 2.5 mm ² (external - “clamped” mount) and from 0.03 mm2 up to 0.5 mm ² (internal - “clip-on” mount).

In order to provide a reliable electrical connection, the insulation piercing method was used to connect the conductors of the ribbon cable inside the cabinet to the contacts of the flat connector.

The technical result in ShK1 KTPS-PN is achieved by the combination of the above additional features.

KTPS-PN operates as follows:

Functional units installed in the KTPS-PN cabinets provide input of discrete and analog signals that determine the state of equipment and technological processes of a nuclear power unit, algorithmic processing of received signals in accordance with the design, and output of discrete control and signaling signals or their transmission for other algorithmic processing KTPS-PN of this subsystem.

Claims (1)

Cross cabinet of a complex of technical and software tools of increased reliability for automating the control of technological equipment of power plants, characterized in that it contains relays associated with load resistors and terminal blocks forming a switching field for the exchange of information signals with the passage of transit circuits, and vibration-resistant terminal blocks for internal and external switching for connecting cable and wire conductors with a cross section from 0.03 mm ² to 2.5 mm ² "under the clamp"