XT-JYZZ dosing system
Overview
including boiler-water phosphate, boilerfeedwater oxygen-scavenger dosing, ammonia dosing to demineralized water, stabilizer dosing to circulating water, etc.dosing system, can instrumentsignal and the microcomputer can Automatic chemical dosing, for tighter control of dosing, meet boilersystem requirements, reducing operator workload. each skidwith independence, designcompact footprint, easy to operate and maintain Features.
according to dosing typerequirements, feeds the sampled signal to the industrial PC, the industrial PC uses the sampled signal and the control setpoint, and related control-system parameters, uses a two-dimensional ratio model and fuzzy calculation, the result is sent to the VFD to control inverter output, changes the speed of the variable-frequency dosing pump, to meet actual process demandrequirements. because uses PIDalgorithm, so the control system reaches a stable state quickly. when the boiler is in commissioning, manual or soft-manual operation is also available, switch to automatic mode only after the system is stable, making control more flexible, meet systemrequirements.
dosing systemavailable in several combinations, mainly according to unit capacity, boilerconfigurationmethod(one skid for two boilers or one skid per boiler), and the level of automation(manual or automaticcontrol), dosing-pump selection(diaphragm metering pump)combined into various skid configurations, mainly one pump / one tank, two pumps / one tank, three pumps / two tanks, four pumps / two tanks and other combinations, dosing Accuracy, stable dosing rate.
Features
- 1.compact modular structure, easy to installationcommissioning, and simplifies daily maintenance
- 2.VFD control, continuous Automatic chemical dosing
- 3.a safety valve is fitted at the dosing-pump outlet, ensuring safe operation of the boiler system and metering pumps
- 4.levelautomaticstop the pump
- 5.with manual, automatic, soft-manual and other control modes, interlocked, to meet site requirements as far as possible
- 6.provides a control interface for the computer, ready for plant computer networking, enables remote control
- 7.electrical short-circuitprotection, currentprotection, phase-loss protection, etc.Functions
- 8.automatic switchover between duty and standby pumps
- 9.when the outlet is blocked or the outlet valve is closed, safetyvalveautomaticopen, returns pump-outlet liquor to the solution tank
- 10.on the solution tankconfiguration with alarm signal flaplevel meter, with, levelaudible/visualalarm Functions and 4~20m Asignal
technical parameters
| name | dosing system | ||||||
| packaged modular combinations | pump / one tank, two pumps / one tank, three pumps / two tanks, four pumps / two tanks | ||||||
| applicable units and quantity | suitable for any power plant, Chemical Plants, fertilizer plant, steel plant, captive power plants, etc., 1~3 units sharing | ||||||
| metering pump | flowL/h | pressureMPa | flowL/h | pressureMPa | metering-pump parameters can be set by the userrequirementsselect | ||
| 0.37kW | 0.55kW | 0.75kW | 1.5kW | ||||
| 20 | 1.6 | 6.3 | 32 | 10.0 | 25.0 | ||
| 23 | 16 | 40 | 8.3 | 20.0 | |||
| 25 | 1.3 | 5.0 | 50 | 6.3 | 16.0 | ||
| 40 | 0.8 | 3.2 | 53 | 5.0 | 12.0 | ||
| 50 | 0.63 | 2.5 | 100 | 3.2 | 8.0 | ||
| 63 | 0.5 | 2.0 | 125 | 2.5 | 6.3 | ||
| 80 | 0.4 | 1.6 | 160 | 2.0 | 5.0 | ||
| solution-tank volume | (0.5~1.5)m³ | ||||||
| dosing mode | automatic／manual | ||||||
| load | (2.55)t | ||||||
| electrical load | total electrical load＝1.5x(each metering pumppowertotal＋each stirrer motorpowertotal). metering pumppowercan be found in this table, stirrer motorpowertypically 0.55k or 1.1kW | ||||||
