Thermal Oil Heater With Cooling System

I Equipment feature

SZD serial Thermal oil heater is a kind of new-typed heating equipment with heat energy conversion. It takes the electricity as power, changes it into the heat energy through the electrical organs, takes the organic carrier ( heat Thermal oil ) as medium, and continues to heat through the compulsive circulation of the heat Thermal oil driven by high-temperature oil pump, so as to meet the heating requirements of users. In addition, it could also satisfy the requirements of set temperature and temperature controlling accuracy.

Generally, the Thermal oil furnace consists of the main parts ( heater, high-temperature oil pump and filter ), high position oil tank, control cabinet and piping. The whole set of equipment and the heat-consuming equipment assembled together to form a mandatory liquid circulation heating systems.

II Equipment characteristic

1. This equipment uses electric energy as heat source, clean, no smoke, no environmental pollution, non-corrosive to the device, no affect to workers’ health.
2. High thermal efficiency, can reach 95%, under the working conditions heating-up fast, and temperature uniformity.
3. Low pressure. At the low working pressure, it can get a higher working temperature, and the pressure is only seven one-tenth of the saturated vapor pressure, completely without run, emit, drop, leakage phenomena, safety and reliable, doesn’t need a man on duty for 24-hour.
4. A wide range of temperature regulation, high precision of temperature control, having complete operating control and safe monitoring devices, the precision of oil furnace temperature is about 1 centigrade degree, so it is easy to operate.
5. This equipment structure compact, covers a small area, easy to maintenance. It can be horizontally mounted nearby the hot equipment, and doesn’t need a special boiler room.
6. Save the water treatment equipment and a mass of boiler water.
7. It is safer and more convenient than coal, fuel and gas.

III Performance index

1. Heating power:300kw
2. Cooling capacity:12m²
3. Power supply: 415V 50Hz
4. Oil pump power: 11kw ( flow: 45m³/h,head: 40m)
5. Heating medium: heat transfer oil
6. Temperature control precision: ±1℃
7. Design temperature: 320℃
8. Working temperature:0 ~ 300℃ ( can adjust )
9. Outside dimention: 2600 x1650x 2050 ( L x W x H mm )
10. Weight: 1300kg

IV Structure and control

1. furnace body: It is welded by 4piecs seamless tube of Φ219, and the main part is welded by structural steel with sufficient bearing ability. Heating barrel external insulation uses the high quality alumina silicate fibre, high temperature cut-off valve is connected between the barrel and pump.
2. Electric heater: It is made up of 1 unit flange heater, and every flange heater is welded by stainless steel heating pipe with a certain number of spare. The shell material of heating pipe is 1Cr18Ni9Ti seamless stainless steel pipe, the heating wire is the imported high resistance Cr20Ni80, the fillers are all high-level magnesium oxide powder, temperature resistance, pressure resistance and extending the service life.
3. The hot oil pump is high-temperature centrifugal pump produced by Wuan Industrial Pump Co., Ltd. with long sustainable operation time.
4. Temperature control: Signals transmitted by a temperature sensor for the temperature control instrument, and then through the temperature control instrument to set the temperature operation, PID control with high temperature control precision. The Thermaloil furnace divide into basis heating and auxiliary heating, and many groups of both basis heating and auxiliary heating to reduce load of electrical organs. We control each groups to prevent the Thermaloil ageing when the electrical organs have exorbitant temperature and extend its service life.
5. Pressure monitor: A pressure gage is installed both at the hot oil pump and pipe of heater barrel to show the real-time pressure of furnace, it will output signal alarm once the pressure below a certain value, meanwhile stop heat.
6. Liquid level monitor: There is a float controller in the head tank, it can real-time monitor the liquid level, and it will output signal alarm once the level below a certain value, meanwhile stop heat.
7. Oil in control: Filling pump will open and fill oil into tank once the oil level below the regular level.
8. Main alarm: It is equipped with sound-light alarm of overtemperature, low pressure, low oil and function of stopping electricity.
9. Main protect: This system has interlocking reaction protection of level, temperature, pressure, flow, etc. It can promptly acousto-optic alarm, and stop heating when any one place malfunction.

V Main materials configuration

1. Mechanical part
2. Frame: material is Q235A, chassis is 6.3# U-steel, and other are square tubes of 40x40x3.
3. Heating cylinder: Φ219seamless steel tube
4. Electric heater: Flange stainless steel electric heating pipe

Total power: 300kw

Power: 415VAC  50Hz  three-phase and four-wire

Flange heater: HG20592-97  PL200-1.6  RF

Electric heating pipe: shell is 1Cr18Ni9Ti seamless tube

Heating wire: Cr20Ni80

Insulation resistance: ≥10MΩ

Pressure resistance: 1800V/min

4. Terminal box: Wall-hanging, be a part of the furnace
5. Insulation: High-quality aluminium silicate cotton, insulation thickness is more than 90mm,   shell is galvanized sheet of 1.2mm, and its appearance is flat and smooth without any concavo-convex inequality defects.
6. Control cabinet: Q235-A, cold plate is δ=2mm, line in and out at the bottom, color is computer grey.
7. Outside piant:

Heater surface:  temperature-resistant silver paint

Terminal box: Wall-hanging, be a part of the furnace

Control cabinet: computer grey ( reference, confirm by user )

8. Filter: cast steel
9. Valve: cast steel
10. Blowoff valve: cast steel

B.Electrical organs

1. Temperature controller: from Japan Fuji
2. Air switch: Chint
3. Contactor: Chint
4. Indicator light: Chint
5. Press-button: Chint
6. Switch-button: Chint
7. Solid-state relay: from Wuxi solid-state relay factory
8. Temperature detection: from Shanghai Tianhong
9. Overtemperature relay: Chint
10. Terminal strip:  from Fenghuang
11. Pressure gage: from Hillt

VI Scope of supply

1. Thermaloil heater:                                       1unit
2. Expansion tank:                                         1unit
3. Control cabinet:                                         1unit

VII Spare parts

Oil pump sealing element:                                      1 set

VIII Equipment manufacture and acceptance standard

The equipment provided by the supplier should according to the company standard of “Q/320911 RYS2002-2007 Thermal oil heater”, and national electrical industry manufacturing standards to manufacture and accept.

IX Environmental requirement

1. An indoor space with ventilation or fresh air.
2. Ambient temperature is between -10℃ and 45℃.
3. No electric conductive dust, and no corrosive gas which can severely damage metal and insulation in the around.
4. Without direct sunlight.
5. Smooth and strong of the mounting floor without obvious shake.

X Technical service and quote requirement

1. Equipment acceptance

⑴ According to the accessories clauses of contract

⑵ According to the design drawing and design change confirmed by round turn.

2. Both rights and responsibility & Equipment definition range

A Supplier responsibility

⑴ Thermal oil heater 1 unit;.

B Acquirer responsibility

⑴ The cables between the heater and control cabinet and all materials.

⑵ The facilities besides the outlet and inlet of the heater and construction are all acquirer responsibilities.

3. Technical service

⑴ The supplier should provide the long-term technical advisory services to buyer’s.

XI Equipment evaluation indexes

1. Appearance is free of defects and there is enough rigidity, doesn’t deformation whatever cold state or thermal state
2. Sealing parts all use high-temperature metal winding pads, sealed performance is good without leaking.
3. Sealing test, system does the air-tight test at pressure of 0.1Mpa.
4. Surface temperature of furnace is ≦35℃ ( relative to ambient temperature ).
5. Carbon steel surface is painted two antirust paint and two topcoat after rusting removal. And the appearance is smooth,bright and clean, the colour and lustre is consistent.
6. After the installation, the equipment is operated without trouble for 72 hours.