CN205332330U - Double -phase heat accumulation formula electric boiler of solid -liquid - Google Patents
Double -phase heat accumulation formula electric boiler of solid -liquid Download PDFInfo
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- CN205332330U CN205332330U CN201521122968.8U CN201521122968U CN205332330U CN 205332330 U CN205332330 U CN 205332330U CN 201521122968 U CN201521122968 U CN 201521122968U CN 205332330 U CN205332330 U CN 205332330U
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- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 238000009825 accumulation Methods 0.000 title claims description 43
- 239000007787 solid Substances 0.000 title description 11
- 238000005338 heat storage Methods 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000005485 electric heating Methods 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 10
- 239000002086 nanomaterial Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 74
- 210000004907 gland Anatomy 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 25
- 229910052799 carbon Inorganic materials 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 16
- 238000005496 tempering Methods 0.000 claims description 11
- 230000000306 recurrent effect Effects 0.000 claims description 8
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003032 molecular docking Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000005611 electricity Effects 0.000 abstract description 5
- 239000011232 storage material Substances 0.000 abstract description 2
- 230000009172 bursting Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 239000002609 medium Substances 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- WUJISAYEUPRJOG-UHFFFAOYSA-N molybdenum vanadium Chemical compound [V].[Mo] WUJISAYEUPRJOG-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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- 230000008023 solidification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
本实用新型设计一种固液两相蓄热式电热锅炉，该锅炉由内层炉体和外层炉体构成，中间填装有保温层，在炉腔内设置有多排添加有纳米材料的蓄热金属块，并在蓄热金属块间设置有相互交错上下排列高温换热管和低温换热管，在炉腔内下部设置有电加热管。在高温换热管外设置有高温换热管保护套管，克服了高温换热管由于急冷急热而出现爆管现象的难题，延长了高温换热管的寿命。利用炉腔内填充的固液两相蓄热材料的蓄热特质和比热容更大的含纳米材料的蓄热金属块作为储热和传热介质，大幅提高了电热锅炉的蓄热效能。整个运行过程中蓄热电锅炉都处在无压状态，提高了安全性，利用供电峰、谷时段电价差，在确保有效供热的前提下大幅降低供热系统的运行成本。
The utility model designs a solid-liquid two-phase heat storage type electric heating boiler. The boiler is composed of an inner layer furnace body and an outer layer furnace body, and an insulation layer is filled in the middle. There are multiple rows of boilers added with nanometer materials in the furnace cavity. Regenerative metal blocks, high-temperature heat exchange tubes and low-temperature heat exchange tubes arranged alternately up and down between the heat storage metal blocks, and electric heating tubes are arranged at the lower part of the furnace cavity. The high-temperature heat-exchange tube is provided with a high-temperature heat-exchange tube protective sleeve, which overcomes the problem of high-temperature heat-exchange tube bursting due to rapid cooling and rapid heating, and prolongs the life of the high-temperature heat-exchange tube. Using the heat storage properties of the solid-liquid two-phase heat storage material filled in the furnace cavity and the heat storage metal block containing nanomaterials with a larger specific heat capacity as the heat storage and heat transfer medium, the heat storage efficiency of the electric boiler is greatly improved. During the whole operation process, the thermal storage electric boiler is in a non-pressure state, which improves the safety. The operating cost of the heating system is greatly reduced under the premise of ensuring effective heating by utilizing the difference in electricity prices during peak and valley periods of power supply.
Description
Technical field
This utility model relates to the biphase heat storage electric boiler of solid-liquid, belongs to thermal technology field, particularly relates to a kind of heat accumulating type electric heating heating plant。
Background technology
Thermal storage electric boiler heating is with electric boiler for thermal source, utilize power supply peak, paddy period electricity price difference to open electric boiler in the paddy electricity period to be heated by heating agent, heat storage is got up, closes electric boiler in the power surges period, the heat being stored in heating agent is discharged to heat user heat supply。This utilize trough-electricity to be possible not only to make user reduce operating cost as the heating system of the energy, also the peak-valley difference peak load shifting that electrical network is day by day serious is had positive effect simultaneously, and without any disposal of pollutants, environment protecting highly significant。
At present, mostly the thermal storage electric boiler that market uses is with water heat accumulation and utilizes magnesium oxide solid heat accumulation, water heat reservoir is divided into normal pressure system and pressure bearing system, it is exactly after the water in the water tank of normal pressure or pressure-bearing being heated to uniform temperature when low ebb, by plate type heat exchanger, the heat of the water in water tank is discharged heating when peak；Solid heat accumulation then generally adopts specific heat is big, heatproof is high magnesium oxide as solid heat storage material, when powering low ebb, heat-storage medium is heated to uniform temperature, is discharged by heat by blower fan blow-through heat-storage medium when powering peak。Owing to the heatproof of solid material is higher, therefore amount of stored heat can be very big and will not increase with the increase of pressure as coolant-temperature gage。The heat of solid heat storage electric boiler thermal source is to be that intermediate medium is conducted to heat accumulation magnesia block by air, circulates air then through circulating fan and the heat stored is passed to air+water-to-water heat exchanger transmits pipe heat user system again。If application number is " a kind of Full-automatic heat accumulating type electrically heated boiler and the heat-exchanging process thereof " patent disclosed in " 201110112401.2 ", described heat storage units is magnesian content magnesium oxide breeze more than 92%, make variously-shaped adobe, after 1450 DEG C of high-temperature roastings, as heat storage medium；The heat-obtaining medium of described electrically heated boiler selects high temperature air to replace water；The cycle kinetic energy of high temperature air adopts heat resistant centrifugal fan, and heat exchange unit adopts high-temperature gas-water heat exchanger。
For Large Copacity accumulation of heat, water at atmospheric pressure heat reservoir heat-accumulator tank is bulky, and floor space is bigger；Although and artesian water heat reservoir to some extent solves the problem of atmospheric water tank volume, but owing to pressurized tank long-term work is under 0.5MPa pressure, therefore requiring significantly high for making, in running, safety guarantee will be substantially reduced simultaneously。Solid heat storage electric boiler to some extent solves that accumulative electric hot water boiler volume is big and the problem of artesian water thermal storage electric boiler system pressure-bearing, but owing to its heat transfer efficiency is relatively low, runs power and operating cost greatly then can be made to increase。Because the ratio of specific heat of air is held only small, it is necessary for supporting a lot of circulating fan and air water heat exchanger to improve heat exchange efficiency, thus considerably increase recuperated cycle power and increase equipment and operating cost, secondly circulating fan operation noise is relatively larger, and the heat stored by the impact that the ratio of specific heat appearance of air is little can not pass to hot water efficiently in transmittance process。
Summary of the invention
This utility model purpose is in that, provide a kind of simple in construction, the biphase heat storage electric boiler of solid-liquid that usefulness is higher, this boiler is by outer layer body of heater, internal layer body of heater, the biphase heat-storing material of solid-liquid, high-temperature heat exchange tube, low-temperature heat exchange pipe, high-temperature heat exchange tube pipe box, accumulation of heat metal derby, electric heating tube, high temperature amasss case, low temperature amasss case, low temperature outlet pipe, high-temperature water outlet pipe, combined labyrinth and carbon gland set, carbon shoe, heat-insulation layer, pipe heat exchanger, high temperature main control valve, high temperature bypass valve, low temperature main control valve, low temperature bypass valve, high-temperature tempering pipe, low-temperature return water pipe, condensed water water tank, atmospheric communicating pipe, sealing gland, seal receptacle, condensing hot air furnace pipe, heating tube, return pipe, condensed water recurrent canal, the long-pending case connecting tube of high temperature and the long-pending case connecting tube composition of low temperature；This boiler furnace is made up of inside and outside two-layer body of heater, and centre is filled with heat-insulation layer。Being provided with multiple rows of accumulation of heat metal derby being added with nano material in furnace chamber, and be provided with interlaced arrangement high-temperature heat exchange tube and low-temperature heat exchange pipe on accumulation of heat metal derby, in furnace chamber, bottom is provided with electric heating tube。All spaces in furnace chamber are filled with the biphase heat-storing material of solid-liquid。It is outside equipped with high-temperature heat exchange tube protection sleeve pipe at high-temperature heat exchange tube。Utilize the accumulation of heat speciality that the biphase heat-storing material of the solid-liquid filled in furnace chamber is excellent, in conjunction with the bigger accumulation of heat metal derby containing nano material of density and specific heat capacity as heat accumulation and heat transfer medium, the accumulation of heat usefulness of boilers heated electrically is greatly improved。High-temperature heat exchange tube, through the structure of high-temperature heat exchange tube protection sleeve pipe, overcomes high-temperature heat exchange tube and occurs a difficult problem for booster phenomenon due to rapid heat cycle, extend the life-span of high-temperature heat exchange tube。In whole service process, thermal storage electric boiler is at passive state, improves safety。Utilize power supply peak, paddy period electricity price poor, under the premise guaranteeing effective heat supply, operating cost is greatly reduced。
A kind of biphase heat storage electric boiler of solid-liquid described in the utility model, this boiler is by outer layer body of heater, internal layer body of heater, the biphase heat-storing material of solid-liquid, high-temperature heat exchange tube, low-temperature heat exchange pipe, high-temperature heat exchange tube pipe box, accumulation of heat metal derby, electric heating tube, high temperature amasss case, low temperature amasss case, low temperature outlet pipe, high-temperature water outlet pipe, combined labyrinth and carbon gland set, carbon shoe, heat-insulation layer, pipe heat exchanger, high temperature main control valve, high temperature bypass valve, low temperature main control valve, low temperature bypass valve, high-temperature tempering pipe, low-temperature return water pipe, condensed water water tank, atmospheric communicating pipe, sealing gland, seal receptacle, condensing hot air furnace pipe, heating tube, return pipe, condensed water recurrent canal, the long-pending case connecting tube of high temperature and the long-pending case connecting tube composition of low temperature；Between the outer layer body of heater (2) and internal layer body of heater (3) of body of heater (1), heat-insulation layer (18) is set, being provided with multiple rows of accumulation of heat metal derby (8) in internal layer body of heater (3), the gap of the furnace chamber between internal layer body of heater (3) and accumulation of heat metal derby (8) is filled with the biphase heat-storing material of solid-liquid (4)；Accumulation of heat metal derby (8) is added with nano material；The interlaced high-temperature heat exchange tube (5) being arranged above and below and low-temperature heat exchange pipe (6) it is provided with between accumulation of heat metal derby (8) often arranging, it is outside equipped with high-temperature heat exchange tube pipe box (7) at high-temperature heat exchange tube (5), the two ends of high-temperature heat exchange tube (5) and low-temperature heat exchange pipe (6) are each passed through the upper corresponding opening of body of heater (1) and amass case (11) docking by the long-pending case (10) of high temperature and the low temperature that adpting flange (31) is corresponding with body of heater (1) outer wall, combined labyrinth and carbon gland set (14) it is inlaid with between body of heater (1) and high-temperature heat exchange tube (5) and low-temperature heat exchange pipe (6), high temperature amasss between case (10) by long-pending case connecting tube (38) connection of high temperature, low temperature amasss between case (11) by long-pending case connecting tube (39) connection of low temperature；The top of body of heater (1) is provided with atmospheric communicating pipe (30)；High temperature amasss the water side of case (10) and is connected with high-temperature water outlet pipe (13), low temperature amasss the water side of case (11) and is connected with low temperature outlet pipe (12), high temperature amasss the water inlet end of case (10) and is connected with high-temperature tempering pipe (27), and low temperature amasss the water inlet end of case (11) and connects with low-temperature return water pipe (28) and condensed water recurrent canal (37)；High-temperature tempering pipe (27) is respectively arranged with high temperature main control valve (23) and high temperature bypass valve (24)；Low-temperature return water pipe (28) is respectively arranged with low temperature main control valve (25) and low temperature bypass valve (26)。
Described combined labyrinth and carbon gland set (14) includes sealing gland (32) and seal receptacle (33), and seal receptacle (33) is airtight with the opening on body of heater (1) fixing, is provided with carbon shoe (17) between sealing gland (32) and seal receptacle (33)。
Described adpting flange (31) includes welded flange (15) and screwed flange (16), and welded flange (15) is welded to connect with the long-pending case (10) of high temperature and the long-pending case (11) of low temperature；Screwed flange (16) is threadeded with high-temperature heat exchange tube (5) and low-temperature heat exchange pipe (6)。
A kind of biphase heat-storage electric heating boiler of solid-liquid described in the utility model, compared with existing thermal storage electric boiler technology, has the advantage that
1, volume is little, and floor space is little, overcomes the bulky shortcoming of atmospheric hot-water hold over system。
2, the biphase heat-storage electric heating boiler of solid-liquid of the present utility model uses the biphase heat-storing material of the solid-liquid that will undergo phase transition when temperature reaches 140 DEG C as heat accumulation and heat transfer medium material, and with the addition of the casting iron block of nano-ceramic powder, the problem overcoming conventional solid thermal storage electric boiler heat-transfer effect difference, is greatly reduced the operating cost of heating system。
3, the biphase heat-storage electric heating boiler of solid-liquid of the present utility model also can reach the regenerator temperature of less than 600 DEG C at ambient pressure, therefore solves the problem that hot water pressure at high operating temperatures is high, increases the safety guarantee of run duration。
Accompanying drawing explanation
Fig. 1 is this utility model surface structure schematic diagram；
Fig. 2 is sectional view of the present utility model；
Fig. 3 is the partial enlarged drawing of the components A such as this utility model combined labyrinth and carbon gland set；
Fig. 4 is the sectional view of this utility model body of heater；
Fig. 5 is the operation logic figure of this utility model and heating network。
Legend
1, body of heater；2, outer layer body of heater；3, internal layer body of heater；4, the biphase heat-storing material of solid-liquid；5, high-temperature heat exchange tube；6, low-temperature heat exchange pipe；7, high-temperature heat exchange tube pipe box；8, accumulation of heat metal derby；9, electric heating tube；10, the long-pending case of high temperature；11, the long-pending case of low temperature；12, low temperature outlet pipe；13, high-temperature water outlet pipe；14, combined labyrinth and carbon gland set；15, welded flange；16, screwed flange；17, carbon shoe；18, heat-insulation layer；19, a net circulating pump；20, two net circulating pump；21, small pump；22, pipe heat exchanger；23, high temperature main control valve；24, high temperature bypass valve；25, low temperature main control valve；26, low temperature bypass valve；27, high-temperature tempering pipe；28, low-temperature return water pipe；29, condensed water water tank；30, atmospheric communicating pipe；31, adpting flange；32, sealing gland；33, seal receptacle；34, condensing hot air furnace pipe；35, heating tube；36, return pipe；37, condensed water recurrent canal；38, the long-pending case connecting tube of high temperature；39, the long-pending case connecting tube of low temperature；40, heat user。
Detailed description of the invention
This utility model, not by the restriction of following embodiment, can be determined specific embodiment according to the technical solution of the utility model and practical situation, below in conjunction with accompanying drawing, application principle of the present utility model is further described。
A kind of biphase heat storage electric boiler of solid-liquid described in the utility model, this boiler is by outer layer body of heater, internal layer body of heater, the biphase heat-storing material of solid-liquid, high-temperature heat exchange tube, low-temperature heat exchange pipe, high-temperature heat exchange tube pipe box, accumulation of heat metal derby, electric heating tube, high temperature amasss case, low temperature amasss case, low temperature outlet pipe, high-temperature water outlet pipe, combined labyrinth and carbon gland set, carbon shoe, heat-insulation layer, pipe heat exchanger, high temperature main control valve, high temperature bypass valve, low temperature main control valve, low temperature bypass valve, high-temperature tempering pipe, low-temperature return water pipe, condensed water water tank, atmospheric communicating pipe, sealing gland, seal receptacle, condensing hot air furnace pipe, heating tube, return pipe, condensed water recurrent canal, the long-pending case connecting tube of high temperature and the long-pending case connecting tube composition of low temperature；Arranging heat-insulation layer 18 between the outer layer body of heater 2 and internal layer body of heater 3 of body of heater 1, be provided with multiple rows of accumulation of heat metal derby 8 in internal layer body of heater 3, the gap of the furnace chamber between internal layer body of heater 3 and accumulation of heat metal derby 8 is filled with the biphase heat-storing material 4 of solid-liquid；Accumulation of heat metal derby 8 is added with nano material；The interlaced high-temperature heat exchange tube 5 being arranged above and below and low-temperature heat exchange pipe 6 it is provided with between accumulation of heat metal derby 8 often arranging, it is outside equipped with high-temperature heat exchange tube pipe box 7 at high-temperature heat exchange tube 5, the two ends of high-temperature heat exchange tube 5 and low-temperature heat exchange pipe 6 are each passed through opening corresponding on body of heater 1 and are docked by the long-pending case 10 of high temperature and the long-pending case 11 of low temperature that adpting flange 31 is corresponding with body of heater 1 outer wall, described adpting flange 31 includes welded flange 15 and screwed flange 16, and welded flange 15 is welded to connect with the long-pending case 10 of high temperature and the long-pending case 11 of low temperature；Screwed flange 16 is threadeded with high-temperature heat exchange tube 5 and low-temperature heat exchange pipe 6；Combined labyrinth and carbon gland set 14 it is inlaid with between body of heater 1 and high-temperature heat exchange tube 5 and low-temperature heat exchange pipe 6, described combined labyrinth and carbon gland set 14 includes sealing gland 32 and seal receptacle 33, seal receptacle 33 is airtight with the opening on body of heater 1 fixing, is provided with carbon shoe 17 between sealing gland 32 and seal receptacle 33；Connected by the long-pending case connecting tube 38 of high temperature between the long-pending case 10 of high temperature, connected by the long-pending case connecting tube 39 of low temperature between the long-pending case 11 of low temperature；The top of body of heater 1 is provided with atmospheric communicating pipe 30；The water side of the long-pending case 10 of high temperature is connected with high-temperature water outlet pipe 13, the water side of the long-pending case 11 of low temperature is connected with low temperature outlet pipe 12, the water inlet end of the long-pending case 10 of high temperature is connected with high-temperature tempering pipe 27, and the water inlet end of the long-pending case 11 of low temperature connects with low-temperature return water pipe 28 and condensed water recurrent canal 37；High-temperature tempering pipe 27 is respectively arranged with high temperature main control valve 23 and high temperature bypass valve 24；Low-temperature return water pipe 28 is respectively arranged with low temperature main control valve 25 and low temperature bypass valve 26。
As shown in Figure 1,2,3, 4; outer layer body of heater 2 and the internal layer body of heater 3 of the body of heater 1 of the biphase heat storage electric boiler of solid-liquid of the present utility model use heat-resisting steels to be welded; high-temperature heat exchange tube pipe box 7 also uses heat-resisting steels; high-temperature heat exchange tube 5 and low-temperature heat exchange pipe 6 adopt High-temperature resistant alloy material manufacture; preferably; 12 chromium 1 molybdenum vanadium materials can be used; high-temperature heat exchange tube 5 is arranged in high-temperature pipe protection sleeve pipe 7, and the two ends of high-temperature heat exchange tube 5 are docked through the opening on body of heater 1 by the long-pending case 10 of adpting flange 31 and high temperature；The two ends of low-temperature heat exchange pipe 6 are docked through the opening on body of heater 1 by the long-pending case 11 of adpting flange 31 and low temperature, owing to high-temperature heat exchange tube 5 is different from body of heater 1 material with the material matter of low-temperature heat exchange pipe 6, the mode that can not adopt welding connects, because high-temperature heat exchange tube 5 is directly contact with low-temperature heat exchange pipe 6 and heat storage medium, it will change pipe to later maintenance and make troubles。Owing to the long-pending case 10 of high temperature and the long-pending case 11 of low temperature are also adopted by heat-resisting steels manufacture, different from high-temperature heat exchange tube 5 and low-temperature heat exchange pipe 6 material can not directly weld, therefore the mode that screwed flange 16 connects is adopted to connect high-temperature heat exchange tube 5 and low-temperature heat exchange pipe 6, the mode adopting welded flange 15 welding connects the long-pending case 10 of high temperature and the long-pending case 11 of low temperature, the two is connected again through securing member。Combined labyrinth and carbon gland set 14 can use heat-resisting steels manufacture, is made up of seal receptacle 33 and sealing gland 32 two parts, is connected by securing member。Its sealing principle is: carbon shoe is filled in the gap in the middle of the seal receptacle 33 and sealing gland 32 of combined labyrinth and carbon gland set 14, then compress with securing member, owing to carbon shoe is flexible, will move to high-temperature heat exchange tube 5 and low-temperature heat exchange pipe 6 with the gap that combined labyrinth and carbon gland overlaps 14 junctions after being squeezed, thus playing sealing function, the heat-storing material of post liquefaction is made to exosmose。Meanwhile, the solid mode that connects adopting sealing shroud and flange is more convenient for high-temperature heat exchange tube 5 and the installation of low-temperature heat exchange pipe 6, replacing and maintenance。
In the furnace chamber of thermal storage electric boiler, it is provided with multiple rows of accumulation of heat metal derby 8 being added with nano material, with the addition of the metal derby specific heat of nano material, proportion bigger, therefore absorption and the heat stored are higher。Interlaced high-temperature heat exchange tube 5 evenly distributed up and down and low-temperature heat exchange pipe 6 it is provided with between accumulation of heat metal derby 8 often arranging, high-temperature heat exchange tube pipe box 7 it particularly is provided with outside high-temperature heat exchange tube 5, high-temperature heat exchange tube 5 and heat storage medium are separated, avoid high-temperature heat exchange tube 5 that booster phenomenon occurs due to rapid heat cycle, the life-span of heat exchanger tube can be extended, be also convenient for changing and maintenance simultaneously；Its complementary space in furnace chamber, is all filled with the biphase heat-storing material 4 of solid-liquid, it is preferable that fused salt as the biphase heat-storing material 4 of solid-liquid, utilizes the electric heating tube 9 being arranged in furnace chamber bottom that the biphase heat-storing material 4 of solid-liquid and accumulation of heat metal derby 8 are heated。
When trough-electricity by the biphase heat-storing material 4 of the solid-liquid in electric heating system heat storage pond, when temperature reaches temperature 142 DEG C, fused salt starts liquefaction, continue heating until whole accumulation of heat fused salts liquefy and reach temperature 480 DEG C, meanwhile also give accumulation of heat metal derby 8 by heat conduction, it is heated at a relatively high temperature。Utilize the accumulation of heat speciality of solid-liquid biphase heat-storing material 4 excellence, in conjunction with the bigger accumulation of heat metal derby 8 containing nano material of density and specific heat capacity as heat accumulation and heat transfer medium, accumulation of heat usefulness and the operational efficiency of boilers heated electrically are greatly improved。In the peak electricity period, the aqueous medium that the heat of high temperature stored starts to be added in the high-temperature heat exchange tube 5 of high-temperature heat exchange tube pipe box 7 is released to heat user by heat exchanger, heat exchange principle now is the water of high-temperature liquid state fused salt and liquid, when temperature of molten salt starts to reduce, at this moment accumulation of heat metal derby 8 also begins to liquid fused salt heat release, keeps whole heat transfer process fused salt will not lower the temperature solidification。Whole heat transfer process heat storage and heat exchanger tube are always maintained at liquid liquid heat exchange, increase heat exchange efficiency, reduce circulation power。
Such as Fig. 5, operational process of the present utility model and principle are as follows: low power consumption starts electric heating system and the heat-storage medium in body of heater 1 is heated to temperature 480 DEG C, electric heating system is closed when peak of power consumption, by the water in the heat one net blood circulation in heat-storage medium to uniform temperature, hot water is delivered in heat exchanger, heat user 40 will be supplied after the cool water heating in two net blood circulation by heat exchanger；When the biphase heat-storing material 4 of solid-liquid is in condition of high temperature startup high-temperature heat exchange tube road; first turn on high temperature bypass valve 24; under the power drive of a net circulating pump 19; the water making low discharge first slowly enters the high-temperature heat exchange tube 5 having installed high-temperature pipe protection sleeve pipe 7 additional; after high-temperature heat exchange tube 5 is because of heat transfer effect Slow cooling; it is then turned on the high temperature main control valve 23 of big flow; by high-temperature heat exchange tube 5, pure water is heated to temperature more than 90 DEG C and sends into pipe heat exchanger 22; with heat user system heat exchange, the condensation water collection generated after heat exchange is to condensation water tank 29；After running a period of time, in boiler, the temperature of the biphase heat-storing material 4 of solid-liquid starts entire lowering, slowly open low temperature bypass valve 26, the water making low discharge first slowly enters cryogenic pipe, the low temperature main control valve 25 of big flow it is then turned on after low-temperature heat exchange pipe 6 Slow cooling, make hot water circulate in low-temperature heat exchange pipe 6, so can prevent the gasification problem of water to a great extent。One net circulating pump 19, two net circulating pump 20 is by variable frequency adjustment flow, the state so that the heating load of whole heating system tends to balance。In whole service process, thermal storage electric boiler is at passive state, therefore the safety of operation is greatly improved。
With traditional heat storage boiler heating system, employing fused salt has following special benefits as the heating system of heat accumulating:
(1) compared with water heat accumulation: the boiling point of water is t=100 DEG C, specific heat capacity is c=4.2kJ/ (kg K), between under atmospheric pressure state, the available temperature range of water heating system is 40-55 DEG C, by 55 DEG C of quantity of heat storage calculating every cube of water it is: Q=4.2kJ/ (kg K) × 55 DEG C × 1000=231000kJ, and fused salt is heated to 480 DEG C under atmospheric pressure state, it is 400 DEG C that temperature drops to its available temperature range when 80 DEG C, the heat then stored is: Q=1.55kJ/ (kg K) × 400 × 1600=992000KJ, therefore its quantity of heat storage is water can not compare far away。Thus it is greatly reduced the volume of thermal store；
(2) compared with traditional solid heat reservoir, because traditional solid heat accumulation be utilize air by the heat extraction in thermal store out after again through gas-liquid heat exchange mode, the heat in air is being passed to water, by the Btu utilization of storage being got up after twice heat exchange, thus significantly reduce heat utilization efficiency。The thermodynamic coefficient of air is as follows: specific heat capacity c=0.7088+0.000093kJ/ (kg K), density is pressed ρ=0.947kg/m3 and is calculated, thermal store is heated to 850 DEG C by generally conventional solid heat accumulation, then the heat exchange amount of 1000 cubes of air is Q=1000 × (0.7088+0.000093 × 850) kJ/ (kg K) × 500=393925KJ, 1000 cubes of available heats of air are also far smaller than the heat of 1 cube of fused salt as can be seen here, and the available temperature difference of Practical Project air can not reach temperature 850 DEG C。Therefore the operation power adopting the system of fused salt will reduce far away, this reduces operating cost。
Claims (3)
1. the biphase heat storage electric boiler of solid-liquid, it is characterized in that this boiler is by outer layer body of heater, internal layer body of heater, the biphase heat-storing material of solid-liquid, high-temperature heat exchange tube, low-temperature heat exchange pipe, high-temperature heat exchange tube pipe box, accumulation of heat metal derby, electric heating tube, high temperature amasss case, low temperature amasss case, low temperature outlet pipe, high-temperature water outlet pipe, combined labyrinth and carbon gland set, carbon shoe, heat-insulation layer, pipe heat exchanger, high temperature main control valve, high temperature bypass valve, low temperature main control valve, low temperature bypass valve, high-temperature tempering pipe, low-temperature return water pipe, condensed water water tank, atmospheric communicating pipe, sealing gland, seal receptacle, condensing hot air furnace pipe, heating tube, return pipe, condensed water recurrent canal, the long-pending case connecting tube of high temperature and the long-pending case connecting tube composition of low temperature；Between the outer layer body of heater (2) and internal layer body of heater (3) of body of heater (1), heat-insulation layer (18) is set, being provided with multiple rows of accumulation of heat metal derby (8) in internal layer body of heater (3), the gap of the furnace chamber between internal layer body of heater (3) and accumulation of heat metal derby (8) is filled with the biphase heat-storing material of solid-liquid (4)；Accumulation of heat metal derby (8) is added with nano material；The interlaced high-temperature heat exchange tube (5) being arranged above and below and low-temperature heat exchange pipe (6) it is provided with between accumulation of heat metal derby (8) often arranging, it is outside equipped with high-temperature heat exchange tube pipe box (7) at high-temperature heat exchange tube (5), the two ends of high-temperature heat exchange tube (5) and low-temperature heat exchange pipe (6) are each passed through the upper corresponding opening of body of heater (1) and amass case (11) docking by the long-pending case (10) of high temperature and the low temperature that adpting flange (31) is corresponding with body of heater (1) outer wall, combined labyrinth and carbon gland set (14) it is inlaid with between body of heater (1) and high-temperature heat exchange tube (5) and low-temperature heat exchange pipe (6), high temperature amasss between case (10) by long-pending case connecting tube (38) connection of high temperature, low temperature amasss between case (11) by long-pending case connecting tube (39) connection of low temperature；The top of body of heater (1) is provided with atmospheric communicating pipe (30)；High temperature amasss the water side of case (10) and is connected with high-temperature water outlet pipe (13), low temperature amasss the water side of case (11) and is connected with low temperature outlet pipe (12), high temperature amasss the water inlet end of case (10) and is connected with high-temperature tempering pipe (27), and low temperature amasss the water inlet end of case (11) and connects with low-temperature return water pipe (28) and condensed water recurrent canal (37)；High-temperature tempering pipe (27) is respectively arranged with high temperature main control valve (23) and high temperature bypass valve (24)；Low-temperature return water pipe (28) is respectively arranged with low temperature main control valve (25) and low temperature bypass valve (26)。
2. the biphase heat storage electric boiler of solid-liquid according to claim 1, it is characterized in that described combined labyrinth and carbon gland set (14) includes sealing gland (32) and seal receptacle (33), seal receptacle (33) is airtight with the opening on body of heater (1) fixing, is provided with carbon shoe (17) between sealing gland (32) and seal receptacle (33)。
3. the biphase heat storage electric boiler of solid-liquid according to claim 1, it is characterized in that described adpting flange (31) includes welded flange (15) and screwed flange (16), welded flange (15) is welded to connect with the long-pending case (10) of high temperature and the long-pending case (11) of low temperature；Screwed flange (16) is threadeded with high-temperature heat exchange tube (5) and low-temperature heat exchange pipe (6)。
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| CN201521122968.8U CN205332330U (en) | 2015-12-31 | 2015-12-31 | Double -phase heat accumulation formula electric boiler of solid -liquid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642295A (en) * | 2017-03-02 | 2017-05-10 | 宋世海 | Electric heating energy storage heat supply device |
| CN107726620A (en) * | 2017-11-03 | 2018-02-23 | 青岛新欧亚能源有限公司 | Solid electricity accumulation of heat phase-change heat transfer technique |
| CN110906306A (en) * | 2019-12-24 | 2020-03-24 | 北京瑞特爱机电设备工程有限公司 | A solid heat storage electrode boiler |
| CN115183309A (en) * | 2022-06-06 | 2022-10-14 | 河北工业大学 | Electric heating device based on solid heat storage and phase change heat storage |
-
2015
- 2015-12-31 CN CN201521122968.8U patent/CN205332330U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642295A (en) * | 2017-03-02 | 2017-05-10 | 宋世海 | Electric heating energy storage heat supply device |
| CN106642295B (en) * | 2017-03-02 | 2022-07-26 | 宋世海 | Heating device for electric heating energy storage |
| CN107726620A (en) * | 2017-11-03 | 2018-02-23 | 青岛新欧亚能源有限公司 | Solid electricity accumulation of heat phase-change heat transfer technique |
| CN110906306A (en) * | 2019-12-24 | 2020-03-24 | 北京瑞特爱机电设备工程有限公司 | A solid heat storage electrode boiler |
| CN115183309A (en) * | 2022-06-06 | 2022-10-14 | 河北工业大学 | Electric heating device based on solid heat storage and phase change heat storage |
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