1. Tank cleaning system

Transcription

1 TENDER TEXT / SPECIFICATION 1. Tank cleaning system Tank type: Bumped-type stormwater overflow tank/stormwater retention tank/storage chamber* In Multijet design, comprising a Multijet submersible motor pump and... pcs injector sets with pneumatic pulsating throttling elements, operated by compressed air. The control module Multiplex controls and clocks the throttle valves. As regards its efficiency and arrangement, the unit is designed to aerate and clean the tank properly. Brand: KSB or equivalent Type: Multijet Offered unit Brand/type:.../... Tank cleaning system, mainly consisting of: Multijet-submersible motor pump, wet installed, incl. 20 m connection cable Materials design Pump casing: GG-25 Intermediate casing: GG-25 Impeller: GG-25 Shaft: Casing bolts: A4 Flanged connections: A4 Motor casing: GG-25 Shaft seal Mechanical shaft seal, direction of rotation independent, in tandem arrangement Pump side: SiC/SiC Motor side: Carbon graphite/sic with oil reservation Motor version: Nominal speed: Power rating: Voltage: EX d IIBT /min...KW 400 V Seite 1 von 9

2 Type of protection: Starting type: Frequency: Rated current: Insulation class: Cable entry: IP68 (DIN40050) Star Delta 50 Hz...A F Longitudinally water-proof cable entry Thermal motor protection: 1 st control loop Temperature monitor with automatic restart to protect the winding against overheating 2 nd control loop Temperature limiter for explosion protection, limit temperature Surface treatment: SA 2 ½ (SIS ) Primer: Ferric oxide, mm Final coat: Double chlorinated rubber paint mm, RAL 5002 (ultramarine) A set of Multijet pulse wave injector Consisting of injector sets with pulsating pneumatical throttling elements, operated by compressed air. The control module Multiplex controls and thus clocks the throttle elements. Basically consisting of: Complete inlet and delivery side pipeline and injector sets made of steel galvanized / *, incl. any required fittings, flanged connections, pipe couplings, mounting brackets, pulse sets, valves and various small-scale valves and fittings for flushing connections/deaeration. Brand: KSB Per injector set: - 1 pc. mixing chamber with nozzle sets and fitted, pneumatic pulsating throttling elements - 1 pc. pressure pipe, flanged type - 1 pc. jet pipe DN 125, flanged - 1 pc. air pipe not less than DN 65-1 x 4 m protective pipe DN 100 as cable protection on air pipes Including pipe set and valves and fitting, complete, Compressed air system To operate the pulsating throttling elements. consisting of: compressor, completely wired and ready for connection, to operate the pulsating throttling elements Technical data: Power rating drive motor: Motor type of protection/insulation class: Operating/Control voltage/frequency:... KW IP55 400V/230V/50Hz Seite 2 von 9

3 Including the components required for operation: Compressed air tank with fitted pressure switch, air purification system, valve island with solenoid valves and test container, pressure switch for release etc. High-pressure hose designed for an antivibration connection of the compressed air supply outlet and the valve island Control module Freely parameterizable electric measurement and control unit to control the Multijet system, with...pcs injectors und...pcs discharge pumps, if available Brand: KSB Series: Prozess-Controller:... Specific system data are entered via an integrated display and operating unit with a membrane keyboard. The module has to fulfil the following functions: - Identification of a storage event in the tank/ pump well/ storage chamber (start of filling the tank) - Filtration of wave movements of the water surface in tank/pump well/ storage chamber - Calculation of the absolute water level in tank/pump well/storage chamber, identification of a rising/falling trend - Calculation of switch-on and switch-off water levels - Calculation of the interval times for the water level dependent timing control of the Multijet cleaning system - Control of the solenoid valves of the compressed air operated throttling elements, depending on the tank/storage chamber water level - Determination of the variable water level dependent running and down times in interval operation - Monitoring of incoming fault messages The entered data can be displayed visually (selection). Parameterization of the device: Alignment function for the individual measurement values, input of measuring range and zero correction of the measurement value Filtration of wave movements of the water surface in the tank/pump well/storage chamber Calculation of a rising/falling trend in the tank/pump well/storage chamber Determination: exceeding or falling below a release in the inflow canal Control of the unit in permanent/interval operation, depending on the pump well/ tank/storage chamber water level Monitoring of the rated current of the cleaning unit motor, disconnection in case of falling below the set rated current and monitoring of the cleaning unit for clogging. - Parameter setting for discharge pumps, if available. - Cyclic, freely programmable, staggered starting for all drives - Control of units up to their maximum number of cycles Storage and recording of measurement values: - Start and end of a storage event incl. date and time - Maximum fill level in tank/pump well/storage chamber - Operating times of the individual units - Occurring breakdowns of individual units incl. date and time Seite 3 von 9

4 Recall of stored data: Via an integrated DDE interface, any data can be recalled. Operation of the device: Operating unit, four lines with 20 characters each, for input and output of current process information, with integrated keyboard, to operate the measurement and control unit. The device is preset and to be fitted. System parameters must be read out via the operating unit and be adapted to local conditions. Parameter setting for a cleaning unit: - Current limit for dry operation - Operating time for dry operation - Operating time in interval operation - Off-period in interval operation - Switch-on point of cleaning unit depending on fill level - Switch point to pass to interval operation - Input of a lockout when the fill level approaches the overflow mark Parameter setting for discharge pumps, if available. - Subordinated release - Switch-on and switch-off points of the discharge pumps - Input of the switch-on and switch-off points of the discharge pumps, if available, depending on the tank/storage chamber water level and the level in the inflow canal Alu casing for snap-on rail mounting Dimensions in mm W = 236, H = 106, D = 60 Connections via screw plug terminals Power supply 24 V DC Microprocessor, fixed-programmed Memory 2 x 128 Kbytes RAM, battery-backed Memory 2 x 128 Kbytes FLASH-EPROM Interface 1, RS 232 or RS 485 Interface 2, RS 232 RTS/CTS or RS 485 Interface 3, RS 232 DDC interface 16 analogue inputs 0-10 V DC 12 digital inputs 24 V DC 8 ma 2 digital counting inputs 24 V DC 8 ma 4 analogue outputs V DC 2 ma 4 digital outputs, transistor 24 V DC 0.3 A 8 digital outputs, relays 230 V AC 4A ohmic 2 relays each with common sum Operating unit Alu casing for cabinet front panel installation Dimensions in mm W = 200, H = 106, D = 50 Connections via screw plug terminals Power supply 24V DC Microprocessor, fixed-programmed Interface 1, RS 232 or RS 485 LCD display 4 lines / 20 characters, backlit Seite 4 von 9

5 Membrane keyboard with 17 short-stroke keys Power supply unit, stabilised 220/24 V The following upgradeability must be possible at a later stage: - SRAM memory card module for memory processing up to 8MB SRAM - InterBus interface module for connection to or data interchange with superordinated computer systems, resp. - PROFIBUS DP interface module for connection to or data interchange with superordinated computer systems, resp. - Direct network of several control units - Extension modules for extension of input/output capacitance - Connection of a modem for connection to or data interchange with superordinated computer systems, resp. - Connection of a computer via a DDE interface to read data and control variables Supply and mount the complete preceding components. 2. Electric distribution system to control the cleaning system System: Multijet With the following main characteristics: enclosed in steel-sheet housing, type of protection IP 54 Operating voltage: 400 V/50 Hz Control voltage: 230 V/50 Hz for the following units: Multijet, compressed air system and... pcs discharge pumps, if available, with the following devices: 1 main switch 1 voltmeter with change-over switch 1 analogue display for current tank water level 1 control transformer for 230V control voltage 1 control transformer for 24V DC control voltage 2 fuse panels for compressed air system 1 fuse panel for control module 1 potential-free contacts for release, various potential-free contacts for operation/failure of any consumer unit 1 analogue output per level measurement, to transmit the water level. 1 internal heater 10W with thermostat 1 cabinet lighting 1 maintenance socket CEE 400V / 16A 1 maintenance socket 230V 1 RCD safety device 1 mains-dependent alarm system with a warning flashing light to be mounted on an outdoor cabinet 1 Equipotential busbar Seite 5 von 9

6 In addition, per Multijet: 1 star-delta-contactor combination 1 Manual-0-Automatic mode switch 1 ammeter 1 operating hour meter 3 indicator lights operation/failure/temperature excursion 1 thermistor tripping relay with reclosing lockout In addition, per discharge pump, if available: 1 star-delta-contactor combination / full-voltage starting 1 Manual-0-Automatic mode switch 1 ammeter 1 operating hour meter 3 indicator lights operation/failure/temperature excursion 1 thermistor tripping relay with reclosing lockout The responsible public utility s regulations and conditions on reactive power compensation must be observed. Electric distribution system, completely wired, incl. all fuse accessories and contactor relays etc. Outer dimensions W / H / D (mm):... /... / Level measurement Operating without contact to the ultrasonic method, for Ex zone 1 consisting of a sound transducer and an evaluation electronics for a continuous recording of liquid levels. PVDF membrane Range of measurement for liquids: up to 6m / 10m*, respectively incl. wall bracket to structural conditions incl. voltage protector for measuring and power supply lines Brand:... Series:... incl. 20 m connection cable Seite 6 von 9

7 ALTERNATIVELY Hydrostatic level measurement, for Ex zone 1 consisting of a pressure and measuring transducer for a continuous recording of liquid levels Range of measurement for liquids: up to 2m/4m/6 m/10m * incl. tension clamp incl. voltage protector for measuring and power supply lines Brand:... Series:... incl. 20 m connection cable with pressure compensation tube. 4. Outdoor cabinet To accommodate the described compressed air system including valve island and the described electric distribution system. Cabinet made of polyester, noise and sound-proof, double-walled, with a PU foam core. Mounted on a concrete base provided by customers. The responsible public utility s requirements on counter blank panels and compound characteristics must be observed. Outer dimensions W / H / D (mm): about.../.../... mm ALTERNATIVELY Equipment cabinet To accomodate the described compressed air system, including valve island, as well as the electric distribution system Cabinet made of exposed aggregate concrete suitable for outdoor installation, doors hot-dip galvanized, lockable. Sound insulation of housing and door Vent opening Exhaust fan 230 V with thermostat 25 C as a make contact Surface two-socket plug, moisture-proof design Heater 230 V with thermostat Moisture-proof lamps Moisture-proof fuse box To be mounted on a level and compacted area prepared by builder-owner Seite 7 von 9

8 The responsible public utility s requirements on counter blank panels and compound characteristics must be observed. Outer dimensions W / H / D (mm): about.../.../... mm 5. Cable wall duct Brand Brattberg or equivalent Type RGP - 100, made of V2A to be mounted in a wall opening already prepared by customers or in a tube of an inner diameter of mm cast in by customers, including any required duct elements and dummy elements 6. Cable terminal box Explosion proof design, incl. any required cable terminals and threaded cable connections Dimensions: W / H / D.../... /... mm 7. Connection cables 1 set of power and control cables between: switchgear and Multijet system Including pressure hoses between the compressor system and the pneumatic throttling elements, cable guy ropes incl. holders made of stainless steel in the tank area, set length according to structural conditions, Cable conduits with cable grip wire between tank and switchgear are part of the lot. Seite 8 von 9

9 8. Provision of the equipotential bonding for the scope of delivery (DIN VDE 01000, part 540) Connection to main equipotential bonding provided by customers and equipotential busbar respectively Original inspection and recording (DIN VDE 01000, part 610) The provisions of part 737 for damp and wet areas must be observed. 9. Commissioning and instruction Commissioning of the supplied parts by a KSB super viser, incl.: - Review of system installation and operations - Optimisation of operations - Instruction of operating staff - Test run Lump sum: 10. Maintenance Annual maintenance of machinery and electrical equipment to manufacturer s instructions. Lump sum: *Delete where inapplicable or complete where applicable, resp. KSB Fluid Systems GmbH Turmstr Halle (Saale) Tel +49 (345) Fax +49 (345) fluid.systems@ksb.com Seite 9 von 9