CN102748859B - High-efficiency heat exchange fire grate of heat-conducting oil furnace - Google Patents
High-efficiency heat exchange fire grate of heat-conducting oil furnace Download PDFInfo
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- CN102748859B CN102748859B CN201210262835.5A CN201210262835A CN102748859B CN 102748859 B CN102748859 B CN 102748859B CN 201210262835 A CN201210262835 A CN 201210262835A CN 102748859 B CN102748859 B CN 102748859B
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Abstract
The invention discloses a high-efficiency heat exchange fire grate of a heat-conducting oil furnace, comprising a heat exchange tube in a structure, wherein the heat exchange is connected in parallel between a lower communicated horizontal tube and an upper communicated horizontal tube, and is formed like a fire grate; an oil inlet and an oil outlet are respectively arranged on the lower communicated horizontal tube and the upper communicated horizontal tube; the heat exchange tube is a compound sleeve tube structure; an internal sleeve tube is a blind tube which has a closed end and which is located on an inner wall of an external sleeve tube by means of an end bracket. The fire grate provided by the invention also ensures flow speed of heat-conducting oils in the tube under the condition that rigidity of the heat exchange tube is ensured so as to reach provisions of related state standards.
Description
Technical field
The present invention relates to a kind of improvement of heat-conducting oil furnace structure, particularly a kind ofly adopt the coal-fired improvement to heat-conducting oil furnace fire grate structure during for the energy.
Background technology
Heat-conducting oil furnace is taking conduction oil as heat carrier, by the forced circulation of hot oil pump, deep fat is arrived with after hot equipment by Pipeline transport, then returns to the closed cycle heating equipment heating in heat-conducting oil furnace, is first-selected at present a kind of low-voltage high-temperature thermal power transfer equipment.
Heat-conducting oil furnace and steam, the hot-water boiler main distinction that requires is in design: heat-conducting oil furnace requires the flow velocity of conduction oil in heat exchanger tube to be: radiant section is not less than 2m/s, and convection section is not less than 1.5m/s.If traditional water-cooled grate structure directly transplanting is become to oil cooling fire grate on heat-conducting oil furnace, it is the designing requirement that can not meet heat-conducting oil furnace.Main cause: water-cooled grate is generally parallel-connection structure, furnace grate tube diameter generally between Φ 51-Φ 76mm, and has certain gradient; In the situation that conduction oil flow is definite, cannot meet the flow velocity (viscosity larger, flow velocity less) of conduction oil in furnace grate tube.For reaching design current velocity, if furnace grate tube diameter is diminished, the rigidity of furnace grate tube is inadequate; If by furnace grate tube wall thickening, heat transfer efficiency is too low, and under outer tube wall high temperature of living in, low environment of leading after comb oxidation falling speed accelerate, become more fragile light-wall pipe.If furnace grate tube strengthening is laterally together in series, fire grate just can not be by being in tilted layout, and increased the circulation resistance of heat-conducting oil furnace, made circulating pump motor increased power, and because oil cooling fire grate is by horizontally disposed, when blowing out, oil does not have self-loopa function in boiler tube, also has unburnt fuel on oil cooling fire grate, so even if oil temperature be down to when lower, can not close down oil circulating pump, increase the expense of operation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high efficient heat exchanging fire grate of heat-conducting oil furnace, it has set up and has changed the long-pending inner sleeve of liquid flow section on the basis of fire grate shape heat exchanger tube, make the flow velocity of heat exchanger tube reach designing requirement, and met the rigidity requirement of heat exchanger tube.
For solving the problems of the technologies described above the technical scheme that the present invention takes be:
A kind of high efficient heat exchanging fire grate of heat-conducting oil furnace, structure comprises and is connected in the heat exchanger tube that forms fire grate shape between upper and lower perforation transverse tube, oil-in, oil-out are separately positioned on upper and lower perforation transverse tube, described heat exchanger tube is combined type sleeve structure, inner sleeve be one end sealing blind pipe, be positioned on outer sleeve inner wall by face end support.
In heat exchanger tube, flow, flow velocity and the long-pending pass of liquid flow section are:
（1）
In formula,
for fluid flow,
for flow rate of liquid,
for liquid flow section amasss.In the situation that fluid flow is certain, flow stream velocity and liquid flow section are long-pending to be inversely proportional to.Heat exchanger tube of the present invention adopts combined type sleeve structure, has set up the blind pipe of one end sealing in outer tube.Due to the conduction oil in described blind pipe not with outer tube in conduction oil flow simultaneously, be equivalent to reduce the actual internal area of conduction oil, in the situation that heat-conducting oil furnace fluid flow is certain, increased the flow velocity of conduction oil, meet the regulation of relevant criterion.Thereby in the situation that not reducing furnace grate tube diameter, ensure the flow velocity of conduction oil in heat exchanger tube.
The beneficial effect that adopts technique scheme to produce is: 1. the present invention, in the situation that ensureing heat exchanger tube rigidity, has ensured again conduction oil flow velocity in pipe, has reached the regulation of relevant national standard; 2. furnace grate tube is arranged in parallel, and has reduced conduction oil circulation resistance, has reduced circulation motor power consumption; 3. furnace grate tube is in tilted layout, and has realized conduction oil self-loopa in pipe, in the time that oil temperature drops to lower temperature, can close down oil circulating pump, has reduced the expense of operation.
Brief description of the drawings
Fig. 1 is that master of the present invention looks partial schematic sectional view;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is that the A-A of Fig. 1 is to generalized section;
Wherein, 1, lower perforation transverse tube, 1-1, oil-in, 2, heat exchanger tube, 2-1, outer tube, 2-2, inner sleeve, 4, upper perforation transverse tube, 4-1, oil-out, 5, face end support.
Detailed description of the invention
Referring to Fig. 1 ~ Fig. 3, the present invention burns coal-fired thermal oil furnace fire grate for hand, its structure comprises and is connected in the heat exchanger tube 2 that forms fire grate shape between lower perforation transverse tube 1 and upper perforation transverse tube 4, oil-in 1-1, oil-out 4-1 are separately positioned on lower perforation transverse tube 1 and upper perforation transverse tube 4, described heat exchanger tube 2 is combined type sleeve structures, inner sleeve 2-2 be one end sealing blind pipe, be positioned on outer tube 2-1 inwall by face end support 5.The present embodiment has increased the blind pipe of one end sealing on the basis of existing heat exchanger tube, because the conduction oil in blind pipe does not affect the circulation of the conduction oil in outer tube 2-1, the liquid flow section that has been equivalent to reduce conduction oil is long-pending, thereby increase liquid flowing speed, make in the constant situation of the rigidity of heat exchanger tube 2, increase the flow velocity of conduction oil, reached the designing requirement of speed and rigidity.
The level inclination of described heat exchanger tube 2 is 15 ~ 25 °, and heat exchanger tube 2 and the furnace bottom of heat-conducting oil furnace are 15 ~ 25 ° of angles and oil-out 4-1 higher than oil-in 1-1.The heat exchanger tube being in tilted layout has self-loopa ability, is down to when lower when oil temperature, can cut off circulating pump, reduces operating cost.Inner sleeve 2-2 can, near the sealing of oil-in 1-1 end, also can hold sealing near oil-out 4-1.When temperature reduce, while stopping circulating pump, the conduction oil in the conduction oil in inner sleeve 2-2 and outer tube 2-1 carries out convection current, completes heat exchange, and under conduction oil self-circulation function, completes exchange heat.
The wall thickness of described outer tube 2-1 is 3-8mm, in the situation that meeting heat exchanger tube 2 required rigidity, does not reduce the heat exchange efficiency of outer tube.
The distance of outer tube 2-1 inwall and inner sleeve 2-2 outer wall is 3-10 mm.To meet the designing requirement of heat exchanger tube flow velocity.
Adopt the present invention, in the time using circulating pump, conduction oil successively through oil-in 1-1, lower perforation transverse tube 1, heat exchanger tube 2, upper perforation traverse 4 and oil-out 4-1 to the circulation of hot equipment, due to inner sleeve 2-2 one end sealing, the sectional area that conduction oil flows through in outer tube 2-1 reduces, flow velocity increases, and reaches designing requirement.In cyclic process, along with the conduction oil temperature in outer tube 2-1 increases, under the effect of convection current and radiation, the conduction oil in inflow inner sleeve 2-2 and the conduction oil in outer tube 2-1 carry out heat exchange.Be down to when lower when conduction oil temperature, close down circulating pump, now conduction oil carries out self-loopa through upper perforation transverse tube 4, heat exchanger tube 2, lower perforation transverse tube 1, and the conduction oil in the conduction oil in inner sleeve 2-2 and outer tube 2-2 carries out heat exchange, completes self-loopa.Due in the time that temperature is lower, can close down circulating pump, reduce the operating cost of heat-conducting oil furnace.
The present invention not only can be used for horizontal heat-conducting oil furnace but also can be used for vertical heat-conducting oil furnace.
Claims (2)
1. the high efficient heat exchanging fire grate of a heat-conducting oil furnace, structure comprises and is connected in down, between upper perforation transverse tube, form the heat exchanger tube (2) of fire grate shape, oil-in (1-1), oil-out (4-1) is separately positioned on down, on upper perforation transverse tube, it is characterized in that described heat exchanger tube (2) is combined type sleeve structure, inner sleeve (2-2) is the blind pipe of one end sealing, be positioned on outer tube (2-1) inwall by face end support (5), the level inclination of described heat exchanger tube (2) is 15 ~ 25 ° of angles, the distance of outer tube (2-1) inwall and inner sleeve (2-2) outer wall is 3-10 mm.
2. the high efficient heat exchanging fire grate of heat-conducting oil furnace according to claim 1, the wall thickness that it is characterized in that described outer tube (2-1) is 3-8mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210262835.5A CN102748859B (en) | 2012-07-27 | 2012-07-27 | High-efficiency heat exchange fire grate of heat-conducting oil furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210262835.5A CN102748859B (en) | 2012-07-27 | 2012-07-27 | High-efficiency heat exchange fire grate of heat-conducting oil furnace |
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| CN102748859A CN102748859A (en) | 2012-10-24 |
| CN102748859B true CN102748859B (en) | 2014-08-27 |
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| CN201210262835.5A Active CN102748859B (en) | 2012-07-27 | 2012-07-27 | High-efficiency heat exchange fire grate of heat-conducting oil furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104154728B (en) * | 2014-08-16 | 2016-05-04 | 河北金梆子锅炉有限公司 | A kind of carrier bar transportation coal ball conduction oil drying machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303259Y (en) * | 1997-07-16 | 1999-01-06 | 董国政 | Shell and tube heat-exchanger |
| CN2482660Y (en) * | 2001-06-15 | 2002-03-20 | 王仲明 | Heat conducting oil furnace |
| CN201407815Y (en) * | 2009-04-14 | 2010-02-17 | 陈社庭 | Multi-layer vertical coil heat-conducting oil furnace |
| JP2011106782A (en) * | 2009-11-20 | 2011-06-02 | Corona Corp | Heat exchanger structure for water heater |
-
2012
- 2012-07-27 CN CN201210262835.5A patent/CN102748859B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2303259Y (en) * | 1997-07-16 | 1999-01-06 | 董国政 | Shell and tube heat-exchanger |
| CN2482660Y (en) * | 2001-06-15 | 2002-03-20 | 王仲明 | Heat conducting oil furnace |
| CN201407815Y (en) * | 2009-04-14 | 2010-02-17 | 陈社庭 | Multi-layer vertical coil heat-conducting oil furnace |
| JP2011106782A (en) * | 2009-11-20 | 2011-06-02 | Corona Corp | Heat exchanger structure for water heater |
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| CN102748859A (en) | 2012-10-24 |
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Effective date of registration: 20170203 Address after: 050200 Luquan City, Shijiazhuang Province, the river rock road, No., No. 66 Patentee after: Hebei Gold Bangzi Boilers Co., Ltd. Address before: 050200 Shijiazhuang, Luquan City, the town of Jiang Yan Road, No. 66, No. Patentee before: Chen Sheting |
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Address after: 050200 Shijiazhuang, Luquan City, the town of Jiang Yan Road, No. 66, No. Patentee after: Hebei Gold Bangzi Boilers Co., Ltd. Address before: 050200 Luquan City, Shijiazhuang Province, the river rock road, No., No. 66 Patentee before: Hebei Gold Bangzi Boilers Co., Ltd. |