CN1296653C - Electrothermic pipe overheat steam boiler - Google Patents
Electrothermic pipe overheat steam boiler Download PDFInfo
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- CN1296653C CN1296653C CNB2005100420827A CN200510042082A CN1296653C CN 1296653 C CN1296653 C CN 1296653C CN B2005100420827 A CNB2005100420827 A CN B2005100420827A CN 200510042082 A CN200510042082 A CN 200510042082A CN 1296653 C CN1296653 C CN 1296653C
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Abstract
The present invention provides an electrothermic-pipe superheated-steam boiler which comprises a boiler body and a superheater, wherein the boiler body is used for generating saturated steam; the superheater is used for generating superheated steam; heating elements in the boiler body and the superheater are set as single-end single-outlet line type electrothermic pipes; the electrothermic pipes are connected in a wye mode, the outer shells of the electrothermic pipes and the boiler body serve as a neutral point, and the outer shells of the electrothermic pipes and the boiler body can be leaned or contacted to the ground; the electrothemic pipes in the superheater are arranged that the electrothermic pipes can be inserted into the upper part or the lower part, and a traverse baffle which is capable of causing steam to flow in a passage formed by the steam and to be heated is arranged in the superheater; water in the boiler body is heated by the electrothermic pipes, and the electrothermic pipes can be laterally or vertically arranged. The present invention overcomes the defect that the traditional electrothermic boiler can not generate the superheated steam. The present invention has the characteristics of simple structure, convenient manufacture and maintenance and no pollution, and besides, the present invention can be used for the process which needs the superheated steam in food industry, sanitation industry, chemical industry, etc.
Description
Technical field
The present invention relates to the electrically heated boiler technical field, particularly the resistance-type electrothermic pipe overheat steam boiler.
Background technology
Boilers heated electrically is from the history in existing more than 50 year so far that is born, and the later stage sixties obtains bigger development the America and Europe.Electrically heated boiler at home development and to apply then be nearly five, six years thing.
Electrically heated boiler is the utilization rate of electrical height not only, the automaticity height, and use and management is convenient, also has the advantage that occupation of land face area is little, start fast, no solid fuel and slag treatment, non-pollution discharge.From the angle of environmental protection, electrically heated boiler is the cleanest.As the electric heating pot furnace system is made hold over system, also has effect to the balanced network load of electrical network " peak load shifting ".So electrically heated boiler has especially obtained promoting the use of in the big and medium-sized cities of " an inch of land is an inch of gold " at some environmental requirement height in recent years.
Electrically heated boiler can be divided into resistance-type and electric pole type by its heating element heater.The heating that the resistance-type electrically heated boiler uses is exactly our common electric heating tube.The electric pole type electrically heated boiler then will be connected with low pressure (600V following) or the electrode of high pressure (15000V) directly inserts in the boiler water, and electric current just produces hot water and steam during by electrode and water.Standby vapour source boiler when this boiler has been used for nuclear power station as startup of unit in China.The electrically heated boiler of domestic production at present is the resistance-type electrically heated boiler, all adopts the resistance-type heating.For this reason, the clause in China JB/T10393-2002 " electrically heated boiler technical conditions " standard is also all formulated at the electrically heated boiler that adopts the resistance-type heating.The current electrically heated boiler that adopts both at home and abroad which kind of electrical heating elements does not all have to produce the electrically heated boiler of superheated steam, all is the electrically heated boiler of heat supply water (below 95 ℃) and saturated vapor.Because the saturated-steam temperature that boiler produces is corresponding with operating pressure, make saturated-steam temperature surpass 200 ℃, operating pressure will surpass 1.75Mpa (t
s=205.73 ℃), this has just limited the use of electrically heated boiler to a great extent.In addition, because common resistance-type electric heating tube mostly adopts the U type, so assembling, maintenance, replace tubes are all extremely inconvenient.
Summary of the invention
For overcoming the defective that electrically heated boiler can not produce the limitation of superheated steam and assembling, maintenance inconvenience, the invention provides a kind of single-ended single outlet electrothermic pipe overheat steam boiler.
The present invention realizes by the following technical solutions:
This electrothermic pipe overheat steam boiler, comprise boiler body that produces saturated vapor and the superheater that produces superheated steam, wherein, heating element heater in boiler body and the superheater is set to the single-ended electrothermal tube that singly goes out line style, electrothermal tube adopts Y shape to connect, and electrothermal tube shell and boiler body shell are as neutral point and reliable ground.
Described electrothermal tube is connected with the superheater cylindrical shell with boiler body by screw thread, directly inserts in boiler body and the superheater cylindrical shell.
Three of said electrothermal tubes are one group, and A, B, C three-phase are connected with the leading-out terminal of three electric heating tubes respectively.
Described electrothermal tube is existing single-ended single outlet type electrothermal tube, and its structure comprises metal tube, spirality heater, crystal magnesium oxide powder obturator, leading-out terminal and black box; Be provided with spirality siderochrome aluminium vertically at the center of metal tube or nichrome wire is a heater, the gap in the middle of heating wire and metal tube, by knot product magnesia powder with thermal conductive resin and electrical insulating property as obturator; One end of heater heating wire connects with the leading-out terminal of this electrothermal tube, and the other end is direct and the metal body is welded together; The black box of electrothermal tube adopts traditional thread connection.
Electric heating tube in the described superheater is set to and can inserts from last or bottom; Be provided with in the superheater steam is flowed and heated deflection plate in the passage of its formation.Water heating in the boiler body can laterally or be arranged vertically with electric heating tube.
Described boiler body and superheater can adopt vertical or horizontal layout.
Described electric heating tube diameter is 16-20mm, is 2.3-2.5w/cm when the tube wall surface thermic load is used to heat superheated steam
2, the steel pipe of heat hot water is 8-10w/cm
2
Product of the present invention also can be made boiler the use in parallel of a plurality of unit, to enlarge superheated steam output.
When product of the present invention only uses body part, can be used as common wet steamer and use.The superheater part also can be used as steam heater separately.
The present invention is body that produces saturated vapor and the superheater two large divisions who produces superheated steam for producing superheated steam with boiler design.Its structure of body that produces saturated vapor is similar to common electrically heated boiler, but the electrothermal tube of U type electrothermal tube that will use in the past or single-ended pair of outlet has changed single-ended single outlet electrothermal tube into.Electrothermal tube is connected with the cylindrical shell of boiler body by screw thread, directly inserts in the cylindrical shell of boiler body.Superheater and common tubular heat exchanger structure are similar, and electrothermal tube is connected with the superheater cylindrical shell by screw thread equally, directly inserts in the superheater cylindrical shell.Saturated vapor is introduced in the superheater cylindrical shell by base, and " S " type of according to the runner that deflection plate is separated out, doing outside electrothermal tube flows, until being heated to the superheat steam temperature that needs.
Because the other end of the every interior heater strip of electric heating tube all welds with pipe, in fact the other end of three heating tubes connects together and has formed Y connection, and boiler jacket has also become neutral point, gets final product work after the energising, adds hot water or saturated vapor.Just because of boiler jacket becomes neutral point,, should calculate and install by the requirement of transformer grounding so adopt the necessary good earth of the boiler body of this kind heating mode of heating.
Electrothermal tube of the present invention can be fixed on the boiler body by screw thread at an easy rate or pull down.In case the indivedual electrothermal tubes of boiler damage, even be full of water in the boiler body, as long as all valve closings on the body, pot water can not flow out yet during replace tubes, and it is very convenient to change electrothermal tube.Compare with traditional electrically heated boiler, maximum innovation is: one, increased the superheater that electric heating tube is formed, can produce superheated steam; Two, used single-ended single outlet electric heating tube, every pipe has only an exit to be connected with phase line.Adopt Y shape to connect, drum is neutral point, and takes reliable mode ground connection.
Good effect of the present invention is: at first, broken through the limitation that existing electrical heating steam boiler can not produce superheated steam, widened the range of application of electrical heating steam boiler greatly, avoided because of going up superheated steam equipment separately too much investment taking place; Secondly, because of the present device compact and reasonable, floor space is little, has also saved the soil of an inch of land is an inch of gold; In addition, owing to adopted single-ended single outlet electrothermal tube, avoided that the U type electrothermal tube or the single-ended pair of outlet electrothermal tube boiler are made, the wiring complexity, the shortcoming that maintenance load is big.Applied widely, manufacturing characteristic of simple that product of the present invention has.The thermal efficiency can reach more than 97%, and is pollution-free, can use in the class area of national regulation, and can be used for industries such as food, health, chemical industry needs in the technology of superheated steam.
Description of drawings
Fig. 1 is the vertical structure schematic diagram of boilers heated electrically of the present invention;
Fig. 2 is the schematic diagram of electric heating tube part among the present invention;
Fig. 3 is the horizontal type structure schematic diagram of boilers heated electrically of the present invention;
Fig. 4 is the A-A face cut-away view of Fig. 3.
Wherein: 1. boiler body, 2. hot water electric heating tube, 3. body level measuring and controller, 4. body pressure measxurement and control table, 5. steam-water separator, 6. ontological security valve, 7. saturated vapor carrier pipe, 8. superheater electric heating tube, 9. superheater deflection plate, 10. superheater body, 11. superheater pressure measxurement and control tables, 12. superheater temperature are measured and control instrument, 13. superheater safety valve, 14. the superheater outlet, 15. superheater bearings, 16. drain valves, 17. body bearing, 18. the body blowoff valve, 19. earthing or grounding means, 20. metal tubes, 21. spirality heater, 22. crystal magnesium oxide powder obturator, 23. leading-out terminals, 24. black boies.Wherein the 3,4,6,11,12,13,16, the 18th, require the valve and the safety instrument that must be provided with in the relevant rules of country.
The specific embodiment
Embodiment 1: structure as depicted in figs. 1 and 2, wherein, shown in Fig. 1 is that evaporation capacity is 1T/H, operating pressure is 8Kgf/cm
2, superheat steam temperature is 450 ℃ an electrical heating superheated steam boiler sketch, vertical layout.Boiler is divided into and comprises boiler body 1 that produces saturated vapor and superheater 10 two parts that produce superheated steam, electrothermal tube 2,8 in boiler body 1 and the superheater 10 is single-ended single outlet type electrothermal tube, adopt Y shape to connect, the shell of electrothermal tube shell 20 and boiler body 1 and superheater 10 is as neutral point and reliable ground.The barrel diameter 900mm of boiler body 1, wall thickness 10mm; Its two ends are welded with ellipsoidal head.Boiler body 1 arranges that for vertical structure its underpart is the hydrospace, and top is air space.Single-ended single outlet electrothermal tube 2 of 90 thermal power 8.5KW inserts in the water on body 1 and with fire end by thread connection, is lateral arrangement.Superheater 10 diameter 700mm, wall thickness 8mm adopts vertical layout.Its upper end is welded with ellipsoidal head, and top is welded with flange and is connected the realization sealing with flange by tube sheet.96 diameter 20mm, length 2000mm, thermal power 3KW single-ended singly goes out the screw of electrothermal tube 8 by the superheater upper tube sheet and inserts in the superheater 10 and be fixed on the tube sheet.The metal tube 20 of boiler body and superheater electrothermal tube 2,8 all adopts the manufacturing of 18-8 type stainless steel tube; Illustrated by Fig. 2, be provided with spirality Aludirome silk heater 21 at the center of metal tube 20 vertically, the gap in the middle of heating wire 21 and metal tube 20 is filled by crystal magnesium oxide powder obturator 22; Black box 24 adopts thread connection; One end of heater heating wire 21 connects with the leading-out terminal 23 of electrothermal tube, and the other end is direct and metal body 20 is welded together.During single-ended single outlet electrothermal tube 2,8 wiring, 1/3rd of sum connects with power supply A phase line, 1/3rd with the connection of power supply B phase line, 1/3rd with power supply C phase line connection mutually.The reason load is not excessive to supply line's generation impact when coming into operation in order to make boiler, and make boiler have good ability of regulation and control, no matter body electrothermal tube 2 still is a superheater electrothermal tube 8 all is divided into some groups when wiring, every group of electrothermal tube radical is 3 multiple and drops into by controller control, make and respectively organize electrothermal tube and have circulation and come into operation the function that withdraws from of order.
During boiler operatiopn, pot water is heated to form saturated vapor earlier in boiler body 1, enter then in the superheater body 10 and be heated to form superheated steam.Pot water in the hot water electric heating tube 2 heating boiler bodies 1 makes it to become the saturated vapor that has certain pressure, and saturated vapor enters in the superheater body 10 by saturated vapor carrier pipe 7 after steam-water separator 5 separates.Superheater electric heating tube 8 and deflection plate 9 are housed in the superheater body 10.Enter " S " type channel flow of the saturated vapor of superheater 10, and heated gradually, become superheated steam at last and be sent to the user by superheater outlet 14 by superheater electric heating tube 8 along deflection plate 9 formation.Among the figure the 3,4,6,11,12,13,16, the 18th, require the valve and the safety instrument that must be provided with in the relevant rules of country.Boiler body 1 is single-ended single outlet electric heating tube with superheater 10 heating sources, and the electric heating tube diameter is got 17mm, gets 2.3w/cm when the tube wall surface thermic load is used to heat superheated steam
2, the desirable 8.5w/cm of the steel pipe of heat hot water
2Because single-ended single outlet electric heating tube must take Y shape to connect, so its operating voltage is 220V.Boiler body 1 and superheater body 10 adopt the manufacturing of 20g steel plate, and this boiler produces 450 ℃ superheated steam.
Embodiment 2: as shown in Figure 3 and Figure 4, boiler body and superheater are horizontal layout.Wherein, the cylindrical shell two ends of boiler body 1 are welded with plate shaped end socket.Boiler body 1 bottom is the hydrospace, and top is air space.On the plate shaped end socket of body 1 one ends, electrothermal tube adopts lateral arrangement to single-ended single outlet electrothermal tube 2 of 90 thermal power 8.5KW by thread connection.Superheater 10 diameter 700mm, wall thickness 8mm, the one end is welded with plate shaped end socket, and the other end is welded with flange and is connected the realization sealing with flange by tube sheet.96 diameter 20mm, length 2000mm, thermal power 3KW single-ended singly goes out the screw of electrothermal tube 8 by the superheater upper tube sheet and inserts in the superheater 10 and be fixed on the tube sheet.Other are with embodiment 1.
Claims (8)
1, a kind of electrothermic pipe overheat steam boiler, comprise the resistance-type electric heating pot furnace body that produces saturated vapor, it is characterized in that, have in order to produce the superheater of superheated steam at the boiler body peripheral hardware, boiler body is connected with the superheater with tubular heat exchanger structure by the saturated vapor carrier pipe of being drawn by it; Heating element heater in boiler body and/or the superheater is set to the single-ended electrothermal tube that singly goes out line style; Electrothermal tube adopts Y shape to connect, and electrothermal tube shell and boiler body shell are as neutral point and reliable ground.
2, electrothermic pipe overheat steam boiler according to claim 1 is characterized in that said electrothermal tube is connected with boiler body and/or superheater cylindrical shell by screw thread, directly inserts in boiler body and/or the superheater cylindrical shell.
3, electrothermic pipe overheat steam boiler according to claim 1 and 2 is characterized in that three of said electrothermal tubes are one group, and A, B, C three-phase are connected with the leading-out terminal of three electric heating tubes respectively.
4, electrothermic pipe overheat steam boiler according to claim 1 is characterized in that the structure of said electrothermal tube comprises metal tube, spirality heater, crystal magnesium oxide powder obturator, leading-out terminal and black box; Be provided with spirality siderochrome aluminium vertically at the center of metal tube or nichrome wire is a heater, the gap in the middle of heating wire and metal tube, by the crystal magnesium oxide powder as obturator; One end of heater heating wire connects with the leading-out terminal of this electrothermal tube, and the other end is direct and the metal body is welded together; The black box of electrothermal tube adopts thread connection.
5, electrothermic pipe overheat steam boiler according to claim 1 is characterized in that being provided with in the superheater steam is flowed in the passage of its formation and heated deflection plate.
6, electrothermic pipe overheat steam boiler according to claim 1, it is characterized in that in the boiler body the water heating with electric heating tube laterally or be arranged vertically.
7, electrothermic pipe overheat steam boiler according to claim 1 is characterized in that the electric heating tube of said superheater is set to insert from last or bottom.
8, electrothermic pipe overheat steam boiler according to claim 1 is characterized in that boiler body and superheater adopt vertical or horizontal layout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100420827A CN1296653C (en) | 2005-02-06 | 2005-02-06 | Electrothermic pipe overheat steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100420827A CN1296653C (en) | 2005-02-06 | 2005-02-06 | Electrothermic pipe overheat steam boiler |
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| Publication Number | Publication Date |
|---|---|
| CN1651819A CN1651819A (en) | 2005-08-10 |
| CN1296653C true CN1296653C (en) | 2007-01-24 |
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ID=34876326
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100420827A Expired - Fee Related CN1296653C (en) | 2005-02-06 | 2005-02-06 | Electrothermic pipe overheat steam boiler |
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| CN102788418A (en) * | 2011-05-20 | 2012-11-21 | 大连船舶重工集团装备制造有限公司 | Resistance type electric heating hot water boiler |
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| CN105588099A (en) * | 2016-02-22 | 2016-05-18 | 大震锅炉工业（昆山）有限公司 | Electric-heating superheated steam boiler |
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| CN107355771A (en) * | 2017-08-15 | 2017-11-17 | 江苏万创灭菌设备科技有限公司 | Superheated vapor quick generator |
| CN108131658A (en) * | 2017-12-09 | 2018-06-08 | 陈垣耀 | A kind of hot water of steam cooking stove, steam and high-temperature steam conversion generating means |
| CN109340735A (en) * | 2018-10-19 | 2019-02-15 | 无锡四方集团有限公司 | A kind of process units of superheated steam and its technique for producing superheated steam |
| CN114636143A (en) * | 2020-12-16 | 2022-06-17 | 广东美的厨房电器制造有限公司 | Cooking device and steam generator thereof |
| CN112682772A (en) * | 2020-12-31 | 2021-04-20 | 华南理工大学 | Soaking type steam generator |
| WO2023123412A1 (en) * | 2021-12-31 | 2023-07-06 | 唐锋机电科技（深圳）有限公司 | Superheated steam generating device |
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Patent Citations (4)
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|---|---|---|---|---|
| EP0942230A1 (en) * | 1998-03-13 | 1999-09-15 | C.D.S. Cleaning & Disinfection Systems S.r.l. | Multifunotional apparatus for delivering two different types of steam |
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| Publication number | Publication date |
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| CN1651819A (en) | 2005-08-10 |
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