Overview
| Evaporation capacity | 4 tons | pressure | 1.25Mpa |
| weight | 12 tons | Steam outlet | one hundred |
| Water inlet | forty | Sewage outlet | forty |
| safety valve | fifty | Water pump inlet | forty |
| structure | horizontal | fuel | fuel |
Product Details
1、 Product Introduction
The design of this product complies with the regulations of TSG G0001-2012 "Boiler Safety Technical Supervision Regulations", TSG G0002-2010 "Boiler Energy Saving Technical Supervision and Management Regulations", GB/T16508.1~16508.8-2013 "Shell Boilers", and NB/T47034-2013 "Technical Conditions for Industrial Boilers".
This product model is WNS4-1.25-Y (Q), which is a horizontal internal combustion oil (gas) fast installed boiler with a wet back structure. The corrugated furnace liner and combustion chamber are the first return, while the second and third return are threaded smoke pipes. An energy-saving device is arranged on the upper part of the boiler. The boiler is equipped with complete automatic control devices and safety protection devices, with high and low water level alarms and low water level interlock protection functions; The automatic ignition of the boiler, automatic adjustment of burner firepower, and flameout protection ensure the safe operation of the boiler.
The designed fuel for this product is light oil or natural gas; The fuel is sprayed out of the burner and ignited by an electronic ignition rod. It burns under slight positive pressure in the furnace chamber. The high-temperature flue gas after combustion enters the second and third return threaded smoke pipes by turning 180 ° from the combustion chamber, and enters the energy-saving device for heat exchange by turning 180 ° from the upper part of the rear smoke box. It is then discharged into the atmosphere through the chimney.
2、 Introduction to Boiler Operating Conditions
This boiler can operate stably under 80% -100% operating conditions. Under 100% rated load, the operating parameters of the boiler are: the feed water temperature is 20 ℃, the pressure is 1.25 MPa, and 4 tons of water vapor with a temperature of 194 ℃ can be generated within 1 hour. When using light diesel as fuel, the calculated thermal efficiency is 94.5%, the exhaust temperature is 87.1 ℃, and the light oil consumption is 268.6kg/h. When using natural gas as fuel, the calculated thermal efficiency is 94.9%, the exhaust temperature is 86 ℃, and the natural gas consumption is 322.7NMthree/H.
threeIntroduction to product structure
The boiler consists of a pressurized body, base, packaging and insulation, flue, instrument valves and accessories, front and rear smoke boxes, platform ladder, energy-saving device, and electrical control system.
The overall structure of the boiler body adopts a lower furnace liner, with smoke pipes arranged symmetrically on the left and right sides, and the drum is composed of φ two hundred × 12 cylinder and φ two thousand × Formed by welding the front and rear tube plates of 14; The first return stroke is the waveform furnace liner, which is composed of φ nine hundred × 20 waveform furnace liner composition; The corrugated furnace liner structure not only increases the heat transfer area, but also meets the Free expansion of the furnace liner after being heated; The combustion chamber is composed of φ one thousand and four hundred × 14 Inner front and inner rear tube plates and φ one thousand three hundred and ninety-eight × Made by welding the cylinder body of 16; Adopting a wet back form avoids direct erosion of high-temperature flue gas on the rear smoke box, improving the reliability of boiler operation. 148 pieces for the second and third return trips respectively φ fifty-one × Composed of 3 smoke pipes; Threaded smoke pipes can greatly enhance heat transfer, thereby reducing the heating area, making the boiler structure compact and saving steel. Install energy-saving devices on the furnace top, with 168 energy-saving devices used φ thirty-two × Composed of 3 spiral finned tubes, it greatly increases the heating surface and reduces the exhaust temperature of the boiler.
The front and rear smoke boxes adopt an integral double door structure, which has good integrity, aesthetics, and elegance. It is easy to open during maintenance and has good sealing performance; The Aluminium silicate fiberboard is used as the thermal insulation material, which has good thermal insulation performance, light weight, convenient transportation and installation; The upper part of the boiler is equipped with a manhole device, and the lower part of the rear smoke box is equipped with an inspection device for easy maintenance and upkeep.
5、 Safety accessories, auxiliary equipment, burners, and control instructions
The boiler is equipped with two A48H-1.6 (DN50) spring fully open safety valves.
The burner adopts imported fuel or gas burners from abroad, with a high degree of automation. It can achieve fully automatic control from pre blowing, ignition, automatic conversion of firepower to automatic shutdown and flameout protection.
The feed pump adopts JGGC4-8 × Type 21 boiler feed pump.
In order to effectively monitor and control water level and pressure, the boiler is equipped with a water level gauge (one plate water level gauge and one dual color water level gauge) and a water level control alarm. The boiler has high and low water level alarms and low water level interlock protection functions; It is also equipped with a pressure gauge, pressure controller, and gas and water flow meters, which can fully meet the requirements of monitoring and control.
The burner must obtain a type test certificate before it can be put into use. It should have gas high-pressure and low-pressure protection (to prevent ignition and tempering), wind pressure protection, valve leakage detection, flame monitoring, and flameout protection. In the program design, it must ensure that the burner has the functions of starting and stopping blowing, and must also be interlocked with the boiler control system to control and protect the pressure and liquid level of the boiler.
In general, the burner configured by our company should be used; In special circumstances, if the boiler needs to be selected by the user, the burner can only be selected after passing the type test and complying with the requirements of TSG G0001-2012 "Boiler Safety Technical Supervision Regulations" and TSG ZB001-2008 "Safety Technical Rules for Oil (Gas) Burners". The user should also confirm whether the selected burner meets the configuration requirements specified in the burner selection parameter table.