Heat conduction oil furnace heat metering system

●operational principle

Heat conduction oil furnace based on heavy oil, light oil, or flammable liquid fuel, heat conduction oil as heat transfer medium, using circulating pump forced liquid circulation, to transfer heat to heat equipment, and then returns the reheating once-through special industrial furnace, it is widely used in such as petrochemical, textile, printing and dyeing, plastics, rubber, food processing, wood processing, asphalt heating, carton production,dehydrated vegetables, the lacquer that bake, casting sand mold drying, etc., can also be used for 350 ℃ or less baking and steaming, finalize the design, melt, and dry.

Heat conduction oil furnace metering instrument and its function:

1. Used of combustion safety devices. Its function is to communicate the information and cut off the combustion in time to make the equipment stop operation safely. The main instruments include: heat conduction oil outlet temperature alarm, heat conduction oil inlet pressure difference detector, flame extinguishing detector, wind pressure detector, fuel pressure detector, gas furnace heat conduction oil pressure  detector, fuel cut off valve, Spray media pressure drop detector, etc.

2. Instrument for combustion control.There are mainly: heating furnace outlet heat oil temperature regulation control meter, flash tank pressure regulation meter, combustion flow regulation meter, combustion air flow regulation meter, combustion oil media pressure difference regulation meter, gas phase furnace flash tank level regulation meter.

3. Instruments used to run monitoring. Mainly: furnace outlet pressure gauge, heat conduction oil circulation pump inlet pressure gauge, burner pressure gauge, expansion tank level meter, soot concentration meter, oxygen concentration meter, etc. High degree of automation, quick start and stop, safe and reliable operation; high thermal efficiency, stable output force, strong adaptability to load; compact structure, small volume, small area; less auxiliary laying machine, simple and convenient installation, short installation period; With sufficient fuel combustion and less pollutant emission, higher environmental protection targets can be achieved. Therefore, it is an ideal green environmental protection product with high efficiency, low consumption and low pollution.

 ●Product Features of Heat conduction Oil Furnace

1. an run in low pressure, high working temperature, can be used as below 500 ℃ high temperature heat source.

2. The heating temperature is stable, which can accurately adjust the load-temperature. It can run stably in the adjustable load section and has automatic operation control and safety monitoring device.

3. Closed-circuit cycle heating, high efficiency of heat use, energy-saving effect is remarkable.

4. The normal temperature of molten salt is solid, it must be preheated before starting, and the molten salt in the system must return to the storage tank when stopping, so starting and stopping are more complicated.

●Differential pressure flowmeter

A differential pressure Flowmeter is a flow meter that is calculated by a flow detector installed in a pipeline (I. e., a differential pressure device for short), a known fluid condition and the geometry of a primary instrument and a pipe, and a differential  pressure device is used to calculate the flow meter. The lead pressure tube and differential pressure gauge are composed of three parts. This kind of differential pressure Flowmeter, represented by orifice plate Flowmeter, has a long history of application, high degree of standardization, very common application, and can be used without real flow calibration. The standardization, serialization and generalizability of differential pressure display instruments are high, and the theoretical accuracy is high. Wide range of application and strong adaptability, low initial investment cost. However, through practical application, it is found that the orifice plate Flowmeter is also Shortcomings:

①In the application, many factors (design parameters are inconsistent with operating conditions, length of upstream straight pipe is

insufficient, hole plate and pipe are different centers, hole plate A is polluted, sharp Angle wear, etc.) have A great influence on the measurement accuracy, which increases the measurement error and reduces the accuracy.In particular, the differential pressure transmitter shall be calibrated frequently to ensure the accuracy of zero and the three-way valve shall be checked frequently to prevent the measurement misalignment caused by blockage.

②The installation works are large, troublesome and demanding, and the workload of frequent maintenance and cleaning is large.

③The operation of differential pressure transmitter is required, which increases the maintenance workload. In addition, the pressure pipe should be laid, and the heat insulation of the pressure pipe should be carried out in winter. The pipe should not be installed outdoors.

④The flow range ratio is 1: 3～ 1: 4, the range is low, the measurement of small flow is difficult, and the flow range is narrow.

⑤High pressure loss, non - linear scale, high running cost.

LGK series orifice plates +P23 differential pressure transmitter +P21 pressure transmitter +XSR intelligent double compensation flow integrator + temperature sensor (for integrating calculation)

LGV series V-cone +P23 differential pressure transmitter +P21 pressure transmitter +XSR intelligent double compensation flow integrator + temperature sensor (for integrating calculations)