CN2120309U

CN2120309U - Vertical firepipe heating stove

Info

Publication number: CN2120309U
Application number: CN92206524U
Authority: CN
Inventors: 陈文亚; 丛培军; 吕兰尚; 李明
Original assignee: EAST CHAINA SURVEY DESIGN INST OF PETROLEUM GAS CORP
Current assignee: EAST CHAINA SURVEY DESIGN INST OF PETROLEUM GAS CORP
Priority date: 1992-04-13
Filing date: 1992-04-13
Publication date: 1992-10-28

Abstract

The utility model relates to a small-size industrial furnace used for heating natural gas or other light petroleum fractions. An inner and an outer cylinders form a jacket; media can be heated when flowing through the jacket. The lower end of the inner cylinder is provided with a burner, while the upper end is provided with a chimney; high-temperature fume is exhausted through the inner cylinder and the chimney. A plurality of nail heads arranged on the outer surface of the inner cylinder enhance heat transfer coefficient and reduce the temperature of an inner cylinder wall. Consequently, the furnace has small size, light weight, fast heating, saved investment and obvious economical benefits.

Description

Vertical firepipe heating stove

The utility model relates to the industrial furnace that is used for heating in a kind of oil product lighter hydrocarbons recovery or the similar device.

Heating to the light petroleum component mainly is to adopt vertical cylinder type or box type heater in light ends unit at present.These bodies of heater require burner center line to boiler tube row center line to have certain distance (the data regulation to be arranged, for single caloric value is the burner of 0.5MW, this distance is not less than 0.6M), in addition also owing to insulation and other structural reason in adopting, for the small cylinder type heating furnace of thermic load less than 0.5MW, its body of heater internal diameter generally is not less than 1 meter.It is big many that the metal consumption of its unit thermic load, nonmetal consumption and the more large and medium-sized heating furnace of output investment ratio come to be wanted.

The domestic another kind of type of furnace that is used for the oil product heating is horizontal fire barrel heating furnace, and it is made up of a horizontal vessel and a U type fire tube that stretches into from an end, and oil product is walked shell side.Because the shell side space is bigger, so it is big to be suitable for heating medium flow, the situation that outlet temperature is not too high.Owing to be horizontal type structure, chimney is higher in addition, so the steel consumption of per unit thermic load, floor space and throwing time money is also bigger.

The purpose of this utility model is to provide a kind of vertical fire barrel heating furnace, its compact conformation, reasonable in design, when the load of heating furnace during in 0.1～0.4MW scope, it has the fast homogeneous heating of oil product firing rate, floor space is little, the characteristics that chimney is short, the steel consumption of unit thermic load, nonmetal consumption and investment will be significantly less than cylinder type heating furnace and horizontal heater, thereby overcome the shortcoming and defect of above-mentioned prior art.

Task of the present invention is achieved in that heated medium is flowed through chuck that the cylindrical shell of inside and outside two concentric vertically-arrangeds forms; Conduct heat to medium by inner tube wall in the high-temperature flue gas inner barrel inside of flowing through.There is the ailhead of rounded projections arranged on the surface outer tube, and the heat transfer coefficient of side medium is improved greatly.So just can adopt the inner core of minor diameter, thereby reduce the volume and the steel consumption of full stove effectively.

Fig. 1. the utility model longitudinal profile structure chart

Fig. 2. the A-A sectional structure chart of Fig. 1

Below in conjunction with accompanying drawing the utility model is done detailed description: as Fig. 1 .2, urceolus 3 of the present utility model and inner core 4 suits, become annular space shape chuck between the inside and outside tube, inner core 4 lower ends connect draws burner 1, be connected lower end cap 2 between urceolus 3 lower ends and inner core 4 outer walls, urceolus 3 upper and lower parts are provided with import 11 and outlet 8 respectively.Inside and outside tube upper end connects annular upper plug head 9, and then connects chimney 10.Also be set with leading truck 5 and hold-down support 7 on the urceolus 3; The urceolus middle part is provided with expansion joint 6, and the outer wall of inner core 4 is provided with ailhead 12.Calorific capacity has the ratio regulatory function at the automatic ignition type of 0.1～0.5MW a long flame gas burner 1 is installed with bolt and flange in lower end at inner barrel 4; The high-temperature flue gas that is produced by burner rises through inner core inside, enters atmosphere by top chimney 10 at last.Heated medium enters the chuck of being made up of inner core 4, urceolus 3, upper plug head 9 and lower end cap 2 by inlet 11, is heated the back and comes out of the stove from exporting 8.Establish some ailings 12 that rounded projections arranged is arranged at the inner barrel outer surface, when heated medium is flowed through ailhead under certain flow velocity, form local turbulent flow, improved heat transfer coefficient greatly.So because the inner core outside heat transfer coefficient is much higher than inboard heat transfer coefficient inner core wall temperature and approaches the temperature of heated medium, and be significantly less than flue-gas temperature, this just makes desirable little distance between inner core inwall and the flame, promptly adopts the inner core of minor diameter.

At the outer cylinder body middle part expansion joint 6 is housed, to absorb inside and outside cylindrical shell owing to the different uneven thermal expansions that produce of temperature.Full stove vertically is installed on the steel frame by an informal discussion 7 and leading truck 5, and its height should make burner and ground that certain distance is arranged, so that operation.

Claims

1, a kind of vertical fire barrel heating furnace, form by burner, lower end cap, urceolus, inner core, upper plug head, chimney, it is characterized in that: urceolus 3 and inner core 4 suits, become the annular space shape between the inner/outer tube, inner core 4 lower ends connect burner 1, be connected lower end cap between urceolus 3 lower ends and inner core 4 outer walls, urceolus 3 upper and lower parts are provided with import 11 and outlet 8 respectively; Inside and outside tube upper end connecting ring upper plug head 9, and then connect chimney 10; Also be set with leading truck 5 and hold-down support 7 on the urceolus 3; The urceolus middle part is provided with expansion joint 6, and the outer wall of inner core 4 is provided with some ailheads 12.

2, vertical fire barrel heating furnace according to claim 1 is characterized in that: the ailhead 12 that the outer wall of inner core 4 is provided with is rounded projections arranged.