CN2594717Y - Thick oil heater with sleeved spiral pipes - Google Patents

Abstract

The utility model relates to a spiral pipe-in-pipe type thick oil heater which is a better thick oil heater designed against the different defects of the existing thick oil heaters in the oil field. A cylindrical furnace chamber is formed in a spiral structural type by a pipe in another pipe, and the molded coal can carry out lower combustion and inverse burning in the furnace chamber. The conformation not only improves the heat exchanger capability and has the best strength condition, but also has the functions of coal firing, gas firing, oil firing, working substance steam output, etc. Consequently, the purposes of the utility model can be realized. The utility model has the advantages of simple structure and high efficiency, reduces the manufacturing cost and reduces the operating cost. The development of the utility model can gain better economic benefit and better social benefit.

Description

Cast thick oil heating arrangement in a kind of helix tube

The utility model belongs to the oil-field thick-oil heating and equipment designs, the manufacturing technology field.

Existing oil-field thick-oil firing equipment has water jacket furnace, fire tube boiler.Shortcoming is separately all arranged: the position heat exchange of water jacket furnace low energy, efficient be low, waste energy; So fire tube boiler is because of directly heating the easy decrepitate of viscous crude in the oil pipe, service life is short.Recently, the various working medium stoves that carry out the Liaohe Oil Field, the structure more complicated of fire coal or combustion gas has increased manufacturing cost, and strength condition is bad, and vacuum failure has cracking during burst disk, and influence is used, and increases operating cost.

The purpose of this utility model is: at the shortcoming of above-mentioned various viscous crude firing equipments, provide a kind of new structure letter, performance is good, cost is low, it is wide, easy to use to be suitable for, the thick oil heating arrangement of energy-saving safe.

The utility model is taked following technical scheme for achieving the above object: (8) are that the cylinder type that is surrounded by the alumina cement cover on every side fires the counter-burning type burner hearth down as shown in Figure 1, two ends and coal feed point (14) and slag notch (6) link, lower opening, outside coil pipe (3) outside spiral, in the outer coil pipe tube chamber of spiral spiral inner coil pipe (4) is housed, the coil pipe upper and lower links with steam adjustable pipe (9) and working medium adjustable pipe (1) respectively outside every circle spiral, viscous crude or thin oil move in the spiral inner coil pipe, interlayer is that working fluid chamber (5) is made vacuum state between the inside and outside coil pipe of spiral, the shell body (13) that the outer coil pipe periphery of spiral is made up of alumina cement layer and heat insulation layer, shell body and burner hearth alumina cement inner room are formed heat convection chamber (2) along circumference, both sides, heat convection chamber communicate with flue (10) from bottom to top, the flue top links with chimney (12), Tobacco Control baffle plate (11) is housed in the chimney, moving grate (7) is housed below in burner hearth, the fire grate below guarantees to have enough combustion spaces, descend the anti-burning of combustion when burning honeycomb briquette, work as summer, can remove moving grate and combustion gas.

The utility model has following advantage: 1, working fluid chamber is worked under negative pressure between spiral coil, therefore starts fast; 2, carry out the vapour phase heat exchange in the working fluid chamber, exchange capability of heat is strong, and therefore the oil in the assurance spiral inner coil pipe can not avoid the oil pipe explosion because of overheated coking yet; 3, tubular type heater not only has fabulous heat transfer boundary condition, and fabulous strength condition is more arranged.Therefore, guarantee safety, improved service life; The round alumina cement cover that 4, heat accumulation function is arranged, the radiant heat of the interior different blackness of assurance burner hearth fully reflects and moulded coal burns anti-burning down, so improved efficiency of combustion, has also improved environmental-protecting performance.In addition, spiral coil is convenient to the abundant absorption of heat in the burner hearth periphery, and has also simplified furnace binding.Therefore not only reduce operating cost greatly, also greatly reduce manufacturing cost.

Fig. 1 is a structure diagram of the present utility model.

(1) spiral outer coil pipe (4) spiral inner coil pipe (5) working fluid chamber (6) slag notch (7) moving grate (8) in working medium adjustable pipe (2) heat convection chamber (3) fires counter-burning type burner hearth (9) working substance steam adjustable pipe (10) flue (11) Tobacco Control baffle plate (12) chimney (13) shell body (14) coal feed point down.

Operation principle of the present utility model and process description are as follows: the moulded coal (honeycomb briquette) on the moving grate (7) under fire in the counter-burning type burner hearth (8) and burn fully, radiant heat is absorbed by the outer coil pipe (3) of spiral on every side, flue gas coil pipe heat exchange outside the both sides, below enter heat convection chamber (2) and spiral is discharged by chimney (12) along being advanced into flue (10) on the circumference of both sides again.Meanwhile, the heat that is absorbed by the outer coil pipe (3) of spiral heats up the interior liquid refrigerant heating of working fluid chamber (5) vaporization, its sensible heat and latent heat are passed to carrier (viscous crude or the thin oil in the spiral inner coil pipe (4), also can heat simultaneously) two kinds of oil, reflux after the working substance steam condensation, heating is vaporization again, thereby has finished the working cycles of heat.Can regulate and control by Tobacco Control baffle plate (11) when fire box temperature is too high.In addition, if desired, working substance steam also can be defeated in addition, and petroleum pipeline is accompanied heat or overhead oil storage tank is incubated heating, guarantees natural back flow after the working medium condensation under enough static pressure, can remove forced circulation from.

According to above-mentioned the 5th, the 7th part explanation, can finish manufacturing, assembling, the debugging of parts and implement requirement of the present utility model.

Claims (3)

1, cast thick oil heating arrangement in a kind of helix tube is made up of tubular construction in the helix tube and following combustion counter-burning type chamber structure.It is characterized in that in the outer coil pipe tube chamber of spiral the spiral inner coil pipe being housed, the outer every circle of coil pipe of spiral links with working substance steam adjustable pipe and working medium adjustable pipe up and down respectively.Surround combustion counter-burning type burner hearth down in the spiral coil inboard by alumina cement, the burner hearth lower opening, two ends connect with fire door, and opening part communicates with heat convection chamber, both sides.

2, according to claim 1, cast thick oil heating arrangement in a kind of helix tube is characterized in that in the spiral inner coil pipe it being to be heated carrier, and working fluid chamber is equipped with a certain amount of working medium liquid.

3, according to claim 1, cast thick oil heating arrangement in a kind of helix tube is characterized in that combustion space, moving grate below is led in the honeycomb briquette hole from the top down on the moving grate, and connection heat convection chamber, both sides feeds flue along circumferential going up.

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