CN2046926U - Crude oil heating apparatus - Google Patents

Abstract

The utility model discloses an improved crude oil heating apparatus which overcomes the defects in the existing heater that the combustion stability of the non-flare nozzle is inferior, the far infrared radiation baffle is fragile in the using process, etc. The utility model adopts a high efficiency combustion chamber which is composed of an inflamer, a barrel body and an accelerating section. The accelerating section outlet point of the combustion chamber and the inlet section of a fire tube are respectively provided with a circular fire resistance bar and a semicircular fire resistance bar for weakening the direct shock form the strong heat flow to the heat tube. The arrangement of the heat tubes in the fire tube is gradually lengthened following the thermal current from the high temperature to the low temperature, which guarantees that the heat tube works within the range of the rated temperature of the heat tube, improving the service life of the heating apparatus. The crude oil heating apparatus is suitable for the mining of the thick oil and the high-solidified oil.

Description

Crude oil heating apparatus

The utility model relates to a kind of improved raw oil heater.

In utility model GG88210266 in the disclosed heat pipe heater, the condensation segment of heat pipe stretches in the oil pipe that crude stream crosses, and evaporator section stretches in the smoke pipe of heater.Working medium in heat pipe draw heat in the smoke pipe of heater, evaporation, the condensation segment that is stretching in the oil pipe through the heat pipe adiabatic section condenses, and emits a large amount of latent heat.The working medium of condensing is got back to the evaporator section that stretches in the smoke pipe again under action of gravity, so circulation is gone down, make crude oil obtain heating, the flameless burner that this heater adopts is subjected to the influence of extraneous natural wind bigger, the air inducing section outside burning of flare at flameless burner often arranged, cause fire easily, very dangerous.Adopt the far infrared radiation plate to separate in the fire tube between flame and the heat pipe, because the far infrared radiation plate adopts easy crisp material such as resistant to elevated temperatures silicon nitride to make, in the heater transportation, jolted easily and fragmentation, in heater starting, stopped process, be subject to the thermal stress effect and crack, cause the fragmentation of infrared panel large tracts of land at last, heat pipe is directly exposed among flame, thereby the part heat pipe is burnt, lost efficacy, heater efficiency descends.

Task of the present utility model provides a kind of improved raw oil heater, so that prolong the life-span of heater, makes its efficient stable operation for a long time.

Task of the present utility model is finished as follows, and the flameless burner of former high efficiency heater is replaced by burner with high efficiency, and the entrance of fire tube uses the combustion chamber that is made of cylindrical shell and accelerating sections to replace.Entry of combustion chamber and burner with high efficiency join, and outlet is joined by flange and fire tube.Fire stopping grating is equipped with in the accelerating sections exit of combustion chamber, and inside, whole combustion chamber is inlaid with certain thickness heat proof material and heat insulating material.In order to reduce the direct effect of heat-flash stream opposite heat tube, the fire tube entrance also is equipped with semicircle fire stopping grating, and heat pipe is operated in its set point of temperature scope.Heat pipe arranging in fire tube can be increased to low temperature gradually by high temperature.Every heat pipe basically identical that is heated can both be operated in its nominal operation temperature, thereby the life-span of heater is prolonged greatly in the main like this fire tube.

For preventing that natural gas is with the excessive burning of pipe-line system pressure oscillation, at the burner with high efficiency air inlet port one current limiter is housed, in raw oil heater Installation and Debugging process, regulate the natural gas admission valve, make it by automatic temp controller and current limiter after maximum stream flow be 6-7 rice ³/ hour, so just can prevent that flame from crossing the work of ambassador's heat pipe overtemperature, thereby guarantee heater operation steady in a long-term.

The utility model is safe and reliable, long service life, and the thermal efficiency can reach 90～91%.Through the reality test, more than average day volume increase crude oil of the every mouthful of well 3-5 ton.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the schematic diagram of the combustion parts of device described in the utility model.As shown in Figure 1, combustion chamber 4 is made of cylindrical tube 6 and conical accelerating sections 5, its inwall is inlaid with heat proof material and heat insulating material 7, guarantee combustion chamber energy long-time running, the inlet of combustion chamber 4 and burner with high efficiency 9 join, and outlet is joined by flange 3 and fire tube 2.Heat pipe 1 radially inserts fire tube 2, and its degree of depth is constantly deepened from high to low according to hot stream temperature, and its heating surface area is determined by thermal current maximum value and heat pipe nominal operation temperature range.For with the thermal current strength control in scope of design, in entering the natural gas line of burner with high efficiency, add a current limiter 10, hot stream temperature can be controlled in the scope of design by regulating natural gas admission valve 12.Fire stopping grating 13 can be pulverized the long flame that produces once in a while, and fire stopping grating 14 can prevent that overfire air stream from directly washing away the heating surface of former heat extraction pipes.Combustion chamber accelerating sections 5 is connected with fire tube 2 usefulness flanges 3, and its advantage is to be convenient to change combustion chamber and fire stopping grating thereof, keeps in repair easily than existing integrally-built heater.In a word, the raw oil heater after the improvement has increased several times than existing heater application life, and can guarantee long-term, efficient, safety, stable operation.

Claims (3)

1. (1) a kind of raw oil heater of forming by combustion chamber, fire tube, heat pipe, automatic temp controller, it is characterized in that combustion chamber (4) inlet joins with burner with high efficiency (9), outlet is joined by flange (3) and fire tube (2), and the entrance of the exit of the accelerating sections of combustion chamber (5) and fire tube (2) is adorned circular and semicircle fire stopping grating (13) and (14) respectively.
2. (2), it is characterized in that heat pipe (1) radially inserts in the fire tube (2) along heater according to the described raw oil heater of claim 1.
3. (3), it is characterized in that between above-mentioned burner with high efficiency (9) and the automatic temp controller (11) current limiter (10) being housed according to claim 1,2 described raw oil heaters.

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