The heat-conducting oil furnace of conduction oil coking in anti-boiler tube and using method
Technical field
The present invention relates to heat conducting furnace, the heat conducting furnace using method of particularly conduction oil coking in anti-heat-conducting oil furnace boiler tube in a kind of dead electricity situation.
Background technology
At present, heat-conducting oil furnace is as a kind of heating furnace that can provide higher temperature under lower operating pressure conditions, and its scope of application constantly expands.Utilize heat-conducting oil furnace heat to be delivered to the equipment of needs heat by organic carrier, conventional organic carrier is conduction oil.The basic structure of conventional thermal conductive oil oven is as shown in Figure 2: comprise body of heater 8, expansion slot 6, oil storage tank 7, heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11, between the said equipment and heating equipment, realize closed cycle.Its general principle is: heat-conducting oil furnace heating conduction oil, conduction oil flows into heating equipment through pipeline, and then oil return returns heat-conducting oil furnace through expansion slot, heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 and heats, and circulates and so forth.But conduction oil is organic media, inflammable and have the restriction of strict serviceability temperature.After heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity, intrasystem conduction oil stops flowing, and furnace temperature cannot reduce at short notice.Directly cause conduction oil in boiler tube to decompose coking, the efficiency affecting heat-conducting oil furnace even causes danger.Existing heat-conducting oil furnace normally maintains conduction oil continuation circulation by starting backup diesel pump 9 in dead electricity situation, and investment is large, needs personnel to arrive execute-in-place valve, time-consuming length during startup, greatly increases the risk of conduction oil coking.
Summary of the invention
The deficiency of large complicated operation is invested in order to overcome existing protected mode; the invention provides heat-conducting oil furnace and the using method of conduction oil coking in a kind of anti-boiler tube; can by switch valve 17 fast conducting protection flow process after heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity; in guarantee system, conduction oil continues flowing, prevents the conduction oil rested in high temperature furnace pipe from decomposing coking.
The technical solution adopted for the present invention to solve the technical problems is:
A heat-conducting oil furnace for conduction oil coking in anti-boiler tube, be connect dead electricity oil exit pipe 15 between heat-conducting oil furnace fuel feed pump 2 and oil storage tank 7, pipe 15 is arranged hand valve 16 and electromagnetic switch valve 17, electromagnetic switch valve 17 is set to dead electricity and opens; Electromagnetic switch valve and heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 are interlocked.
The using method of conduction oil coking in the anti-boiler tube of heat-conducting oil furnace of the present invention, when heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity, heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 quit work; Magnetic valve 17 dead electricity is left, and intrasystem conduction oil flows to oil storage tank 7 under pressure; Opened the magnetic valve 17 in dead electricity oil exit pipe 15 by interlocking signal during dead electricity; Utilize sealing nitrogen tube 3, in high-order expansion slot 6, supplement nitrogen, conduction oil oil return pipe 1 after conduction oil flows directly into supercharging by expansion slot subordinate line 12 under pressure and potential difference effect ", enter heat-conducting oil furnace 8; Conduction oil in conduction oil boiler tube enters low level oil storage tank 7 by dead electricity oil exit pipe 15.
Principle is described as follows:
Utilize the sealing nitrogen tube 3 on expansion slot 6 and pressure regulator valve wherein 4, to ensure that expansion drum is with pressure.Between heat-conducting oil furnace fuel feed pump 2 and oil storage tank 7, connect dead electricity oil exit pipe 15, dead electricity oil exit pipe is arranged hand valve 16 and electromagnetic switch valve 17, wherein hand valve 16 is normally opened, and electromagnetic switch valve 17 is set to dead electricity and opens.The object arranging hand valve 16 is when magnetic valve 17 overhauls, and cuts off dead electricity oil exit pipe 15.
By the quick starting protection flow process of switch valve after heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity, realize the flowing of conduction oil in system.Under nominal situation, at expansion slot 6 and conduction oil oil return pipe 1 after supercharging " between be connected expansion slot subordinate line 12, expansion slot subordinate line is arranged check-valves 13 and ball valve 14, wherein ball valve 14 is normally opened.The effect of check-valves 13 is that under preventing nominal situation, conduction oil enters expansion slot 8 through expansion slot subordinate line.During normal operation, conduction oil enters expansion slot 8 through conduction oil oil return pipe 1, and then before supercharging, conduction oil oil return pipe 1 ' enters heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11, by conduction oil oil return pipe 1 after supercharging " enter heat-conducting oil furnace 8.Heating equipment is entered by conduction oil fuel feed pump 2 after heating.When heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity, heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 quit work.Magnetic valve 17 dead electricity is left, and intrasystem conduction oil flows to oil storage tank under pressure.Opened the magnetic valve 17 in dead electricity oil exit pipe 15 by interlocking signal during dead electricity.Utilize sealing nitrogen tube 3, in high-order expansion slot, supplement nitrogen, conduction oil oil return pipe 1 after conduction oil flows directly into supercharging by expansion slot subordinate line 12 under pressure and potential difference effect ", enter heat-conducting oil furnace.Conduction oil in conduction oil boiler tube enters low level oil storage tank by dead electricity oil exit pipe 15.Due to conduction oil fuel feed pump 2 and rear end equipment pressure high, therefore conduction oil does not flow to conduction oil fuel feed pump 2 in this protection flow process.After heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity, rapid conducting can protecting flow process like this, ensureing the flowing of conduction oil in boiler tube, without the need to increasing equipment and controlled investment.If can restore electricity in the short time, heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 are opened, and close the magnetic valve in dead electricity oil exit pipe 15 by interlocking signal, system can be recovered rapidly.If cannot restore electricity in the short time, the malleation of expansion slot is utilized all to be entered in oil storage tank by the conduction oil in protection flow process.
The invention has the beneficial effects as follows, contrast with the present invention, enclose original flow process at this, see Fig. 2.After dead electricity, heat conduction oil circulating pump 10 and heat conduction oil circulating pump stand-by pump 11 stop, and personnel hurry to the scene and start backup diesel pump 9 and make conduction oil continue circulation to be unlikely to coking in boiler tube.
Accompanying drawing explanation
Fig. 1 is for improving heat-conducting oil furnace protection schematic flow sheet;
Fig. 2 is conventional thermal conductive oil oven protection schematic flow sheet;
Wherein: 1. conduction oil oil return pipe, conduction oil oil return pipe before 1 ' supercharging, 1 " conduction oil oil return pipe, 2. conduction oil fuel feed pump after supercharging; 3. seal nitrogen tube, 4. pressure regulator valve, 5. Pressure gauge; 6. expansion drum, 7. oil storage tank, 8. heat-conducting oil furnace; 9. backup diesel pump, 10. heat conduction oil circulating pump, 11. heat conduction oil circulating pump stand-by pumps; 12. expansion slot subordinate lines, 13. ball valves, 14. check-valves; 15. dead electricity oil exit pipes, 16. hand valves, 17. electromagnetic switch valves.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is conduction oil protection schematic flow sheet.This heat-conducting oil furnace protection flow process is: between heat-conducting oil furnace fuel feed pump 2 and oil storage tank 7, connect dead electricity oil exit pipe 15, wherein arrange hand valve 16 and electromagnetic switch valve 17, and this electromagnetic switch valve and heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 are interlocked.Expansion slot arranges sealing nitrogen tube 3, pressure regulator valve 4 and pressure instrumentation 5 are wherein set.After heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity, electromagnetic switch valve 17 is opened, by sealing nitrogen tube 3, in high-order expansion slot, 6 supplement nitrogen, under pressure and potential difference effect, conduction oil flows directly into 1 by expansion slot subordinate line 12 " conduction oil oil return pipe after supercharging, enter heat-conducting oil furnace 8.Conduction oil in conduction oil boiler tube enters low level oil storage tank 7 by dead electricity oil exit pipe 15.
Under nominal situation, at expansion slot 6 and conduction oil oil return pipe 1 after supercharging " between be connected expansion slot subordinate line 12, wherein arrange check-valves 13 and ball valve 14, wherein ball valve 14 is normally opened.The effect of check-valves 13 is that under preventing nominal situation, conduction oil enters expansion slot 6 through expansion slot subordinate line 12.During normal operation, conduction oil enters expansion slot 6 through conduction oil oil return pipe 1, and then before supercharging, conduction oil oil return pipe 1 ' enters heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11, by conduction oil oil return pipe 1 after supercharging " enter heat-conducting oil furnace 8.Heating equipment is entered by conduction oil fuel feed pump 2 after heating.When heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 dead electricity, heat conduction oil circulating pump 10 and conduction oil circulation stand-by pump 11 quit work.Magnetic valve 17 dead electricity is left, and intrasystem conduction oil flows to oil storage tank under pressure.Opened the magnetic valve 17 in dead electricity oil exit pipe 15 by interlocking signal during dead electricity.Utilize sealing nitrogen tube 3, in high-order expansion slot, supplement nitrogen, conduction oil oil return pipe 1 after conduction oil flows directly into supercharging by expansion slot subordinate line 12 under pressure and potential difference effect ", enter heat-conducting oil furnace.Conduction oil in conduction oil boiler tube enters low level oil storage tank 7 by dead electricity oil exit pipe 15.