CN104792009B - Electrical heating type solid heat storage equipment - Google Patents
Electrical heating type solid heat storage equipment Download PDFInfo
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- CN104792009B CN104792009B CN201510169131.7A CN201510169131A CN104792009B CN 104792009 B CN104792009 B CN 104792009B CN 201510169131 A CN201510169131 A CN 201510169131A CN 104792009 B CN104792009 B CN 104792009B
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- heat storage
- heating wire
- power supply
- earthenware
- storage body
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 65
- 238000005338 heat storage Methods 0.000 title claims abstract description 45
- 239000007787 solid Substances 0.000 title claims abstract description 19
- 238000009423 ventilation Methods 0.000 claims abstract description 6
- 229910052571 earthenware Inorganic materials 0.000 claims description 27
- 239000011449 brick Substances 0.000 claims description 17
- 238000010030 laminating Methods 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention is a kind of electrical heating type solid heat storage equipment, and heat storage body length walks upwards to be provided with some ventilation air ducts, and heat storage body width walks upwards to be provided with some heating wire passages; Along heat storage body length trend, the heating wire be arranged in described heating wire passage is divided at least two unit; The on/off of each unit is carried out and is controlled separately.Can ensure that regenerator temperature is balanced, prevent heating wire temperature too high.
Description
Technical field
The present invention relates to a kind of electrical heating type solid heat storage equipment.
Background technology
As a kind of electrical heating type solid heat storage equipment of novel energy-storing system, its major function utilizes trough-electricity, wind-power electricity generation and photovoltaic solar generating etc. to carry out heating and heat energy storage to energy-accumulating solid material, continued by the heat energy of storage to heating system or hot water supply system's release in power supply peak period.
The solid heat storage body material that existing electrical heating type solid heat storage equipment adopts is generally magnesia brick, walks upwards to reserve some passages between brick and brick in heat storage body length.These passages had not only used as ventilation air duct but also as heating electric heated filament passage.In electrical heating and wind cyclic process, because this channel design can only adopt unified heating power-down mode, cannot realize length walk upwards Discrete control heating, there is obvious thermograde in the longitudinal direction in these passages, cause regenerator temperature unbalanced, be easy to the problem causing heating wire to damage because local temperature is too high.
On the other hand, Authorization Notice No. is that the Chinese invention of CN204119543U discloses " a kind of heating termination of electrical heating type solid heat storage equipment ", two of heating wire ends are arranged in earthenware by this device, earthenware is removably placed among insulation material, and clamp is set outside earthenware for connecting heating wire and power line, when needing to change heating wire, open clamp and can extract heating wire out from a termination, and do not need to dismantle other parts.Find in practice, this mode can simplify the replacement operation of heating wire really, but the problem that earthenware centre bore used outwards dispels the heat is more outstanding, have impact on the heat storage performance of thermal storage equipment to a great extent.
The third aspect, converting 10KV or 6KV High Level AC Voltage to 1000V alternating current owing to not having a kind of special purpose device is that high-power heat storage is powered, and existing electrical heating type solid heat storage equipment is direct use solid state power supply or traditional 380V alternating current generally.The extra 380V of increasing transformer is needed to become power transmission source on the one hand; On the other hand, the accumulation of heat power of solid heat storage equipment usually at hundreds of kilowatt, because existing 380V electrical network is mainly for factory or its load of Quarter Design, if solid heat storage equipment be incorporated to existing electrical network can give basic electrical network bring larger burden.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of electrical heating type solid heat storage equipment, first, by Discrete control pattern, the heat storage in different temperatures region is separately controlled, ensure that regenerator temperature is balanced; The second, by improving the planform of heating wire two ends earthenware, earthenware centre bore heat losses rate is reduced to greatest extent.Three, provide a kind of special power supply, High Level AC Voltage is converted to the low-tension supply of applicable electrical heating type solid heat storage equipment use.
Technical scheme of the present invention is as follows:
A kind of electrical heating type solid heat storage equipment, comprise the heat storage body piled up by some pieces of gitter bricks and the power supply be connected with the heating wire in heat storage body, it is characterized in that: described gitter brick has each vertical facade around, each vertical end face in front and back, a bottom surface with groove penetrating on left and right directions and one are positioned at directly over bottom surface and be shorter than the end face of bottom width in the lateral direction, end face and be vertically each inclined-plane or inner concave around between facade; The vertical facade laminating of gitter brick left and right block, the vertical end face laminating of front and back block, fit in levels bottom surface and groove notch is just right, form heat storage body length and walk some the upwards through ventilation air ducts surrounded by described groove, and form heat storage body width and walk some the upwards through heating wire passages surrounded by inclined-plane or the inner concave of adjacent gitter brick; Along heat storage body length trend, the heating wire be arranged in described heating wire passage is divided at least two unit; Heating wire in each unit is divided into some groups again, and every nine heating wire are set as one group; The on/off of each unit is carried out and is controlled separately.
Also comprise the earthenware for electric furnace heating wire end being drawn thermal storage equipment body; The center hole wall of earthenware has one section of oared segrne pii, and this oared segrne pii is near the outer end of earthenware; This oared segrne pii is less than the center hole wall diameter of this oared segrne pii to earthenware the inner to the center hole wall diameter of earthenware outer end.
Described power supply comprises power supply cabinet and is arranged on the dry-type transformer in power supply cabinet; High voltage isolator and the high-pressure vacuum contactor for carrying out break-make control to loop are also installed in power supply cabinet; High voltage isolator is connected with the high pressure end of incoming cables for connecting electrical network higher level switch, high voltage isolator also connects the input of high-pressure vacuum contactor by line bank, the output of high-pressure vacuum contactor is connected the high voltage input terminal of dry-type transformer with insulator by line bank, the low-voltage output of dry-type transformer is connected with low-voltage output cord; Also be provided with the voltage sensor be connected with described high voltage isolator in power supply cabinet, this voltage sensor is connected with the high voltage display device that the cabinet door of power supply cabinet is arranged; The cabinet door of described power supply cabinet is also provided with transformer temperature controller; Be provided with blower fan bottom described dry-type transformer, top is provided with fan, and rotation and the stopping of described blower fan and fan control by described transformer temperature controller.
Good effect of the present invention is:
The first, every nine heating wire of the present invention are set as one group, some groups is an independently control unit, these control units move towards to arrange along heat storage length, each unit controls separately, after reaching design temperature, corresponding units stops heating automatically, therefore, it is possible to ensure that regenerator temperature is balanced, prevent heating wire temperature too high.
The second, due to non-interference between heating wire passage and vent passages, decrease the contact of high-temperature electric heated filament and moving air on the one hand, alleviate heating wire degree of oxidation, extend the heating wire life-span.On the other hand, flowing resistance reduces, and air channel ventilates more smooth.
Three, earthenware adopts exotic material, and there is through hole inside, for outside electric furnace heating wire pass-out stove.Wherein through hole is radius unequal circular hole, can prevent heat losses to greatest extent.
Four, special power supply of the present invention is from high-voltage fence access 10KV or 6KV high-tension electricity, changes into the 1000V power supply needed for thermal storage equipment, and does not need additionally to increase 380V transformer change power transmission source.Thoroughly solve energy consumption underpower, the basic electrical network problem that over-burden after the installation of high-power thermal storage equipment.This power source special and other 380V power-supply devices separate independent, when thermal storage equipment runs, decrease the interference between equipment and voltage pulsation, thus extend the service life of thermal storage equipment, and improve the stability of equipment and the security of equipment electricity consumption operation.There is no the area of 380V power supply, directly from the power taking of 10KV or 6KV High-Voltage Network, can installed and used to thermal storage equipment and providing convenience by this power source special, decreasing the infringement of rubbish electricity to equipment of low voltage electric network simultaneously.Adopt this power source special to be that thermal storage equipment is powered, overcome the energy loss problem that transformation or electric power long-distance transmissions step by step cause, the wire rod input cost saved.
Accompanying drawing explanation
Fig. 1 is the side view schematic diagram of gitter brick of the present invention.
Fig. 2 is the end surface shape schematic diagram of gitter brick of the present invention.
Fig. 3 is the perpendicular side structure schematic shapes of heat storage body of the present invention and ventilation air duct.
Fig. 4 is the perpendicular end face structure schematic shapes of heat storage body of the present invention and heating wire passage.
Fig. 5 is that heating wire of the present invention divides constituent unit to arrange schematic diagram.
Fig. 6 is the planform schematic diagram of heating wire two ends of the present invention earthenware.
Fig. 7 is structure and the operation principle schematic diagram of power source special of the present invention.
Detailed description of the invention
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiments of the invention comprise the heat storage body piled up by some pieces of gitter bricks.
As Fig. 1 and Fig. 2, described gitter brick has each vertical facade 2 around, an each vertical end face 5, bottom surface 3 with groove 4 penetrating on left and right directions, front and back and one are positioned at directly over bottom surface and be shorter than the end face 1 of bottom width in the lateral direction, end face 1 and be vertically each inclined-plane or inner concave 6 around between facade 2.
As Fig. 3 and Fig. 4, the vertical facade laminating of gitter brick left and right block, the vertical end face laminating of front and back block, fit in levels bottom surface and groove notch is just right, form heat storage body length and walk some the upwards through ventilation air ducts surrounded by described groove 7, and form heat storage body width and walk some the upwards through heating wire passages 8 surrounded by inclined-plane or the inner concave of adjacent gitter brick.Heating wire passage 8 and vent passages 7 all horizontally disposed and orthogonal, non-interference.
As Fig. 5, along heat storage body length trend, the heating wire be arranged in described heating wire passage 8 is divided into three unit, i.e. DY1, DY2 and DY3, and the heating wire 9 in each unit is divided into some groups again, and every nine heating wire are set as one group.The on/off of each unit is carried out and is controlled separately.Based on this arrangement, present invention achieves the Discrete control pattern according to different units.Add and hanker monitoring each cell temperature in real time, when each unit reaches setting regenerator temperature, power-off at any time, guarantees heat storage unit temperature equalization.
As Fig. 6, the present invention also comprises the earthenware 10 for heating wire 9 end being drawn thermal storage equipment body, and the centre bore of earthenware 10 is for installing the end of heating wire.During use, heating wire passes for connecting power line from this earthenware 10 outer end.
Wherein the center hole wall of earthenware 10 has one section of oared segrne pii 11, and this oared segrne pii 11 is as far as possible near the outer end of earthenware 10.The center hole wall diameter of this oared segrne pii 11 to earthenware 10 outer end is less than the center hole wall diameter of this oared segrne pii 11 to earthenware 10 the inner.Many experiments confirms, the earthenware 10 of this structure has the effect significantly reducing earthenware centre bore heat losses rate.
As Fig. 7, the dry-type transformer 20 that special power supply of the present invention comprises power supply cabinet 12 and is arranged in power supply cabinet 12.High voltage isolator 16 is also installed, for carrying out high-pressure vacuum contactor 17 and the insulator 18 of break-make control to loop in power supply cabinet 12, wherein high voltage isolator 16 is connected with the high pressure end of incoming cables 14 for connecting electrical network higher level switch, high voltage isolator 16 also connects the input of high-pressure vacuum contactor 17 by line bank, the output of high-pressure vacuum contactor 17 is connected the high voltage input terminal 19 of dry-type transformer 20 by line bank and described insulator 18, the low-voltage output 13 of dry-type transformer 20 is connected with low-voltage output cord.During use, described low-voltage output cord connects heat storage by accumulation of heat switch board and provides electric energy for high-power solid heat storage equipment.
Also be provided with the voltage sensor 4 be connected with described high voltage isolator 16 in power supply cabinet 12, this voltage sensor 4 is connected with the high voltage display device that the cabinet door of power supply cabinet 12 is arranged.Voltage sensor 4 is by the on off operating mode signal real-time Transmission of high voltage isolator 16 to described high voltage display device, and display unit shows this on off operating mode.
The cabinet door of described power supply cabinet 12 is also provided with travel switch, and it is that tripping higher level switch is to ensure creator's personal safety that door is opened.
The cabinet door of described power supply cabinet 12 is also provided with transformer temperature controller, the automatic control of overtemperature alarm or tripping operation can be realized.Be provided with blower fan bottom dry-type transformer 20, top is provided with fan, in order to realize the heat radiation of this power supply.Rotation and the stopping of described blower fan and fan control by temperature controller.
All operations button is all placed in (assuming that rack rear does not possess the condition of opening) before power supply cabinet 12.Control cabinet and control box are placed on rack front, handled easily.
Low pressure control section and height are pressed with Secure isolation.
The cabinet door of described power supply cabinet 12 is also provided with three-phase output voltage table, ammeter and button indicating lamp etc.
Consider to ventilate, the cabinet door of described power supply cabinet 12 is designed with shutter, to ensure the heat radiation of cabinet internal unit further.
Described power supply cabinet 12 is designed with observation window, is convenient under the prerequisite not opening Qianmen, transformer situation (being furnished with illuminating lamp in cabinet) in convenient observation cabinet.
By electric interlock design, this power supply also ensure that power transmission and power-off can operate in order.
Adopt intellectual digital display ammeter, effectively can cut off circuit when certain phase short circuit.
By test experiments and onsite application, this equipment is reliable, and can meet the voltage-withstand test of megger test (test voltage 2500V, insulation resistance value > 1G Ω) and device 28kV, secondary device 2.5kV.
Whole Equipment is safe and reliable to operation, meets high-tension apparatus electrical safety operational procedure, and interior layout is reasonable, and electric and structural design optimization, ground connection is reliable, and overall appearance is neat, attractive in appearance, and structure is simple, practical.
Claims (3)
1. an electrical heating type solid heat storage equipment, comprise the heat storage body piled up by some pieces of gitter bricks and the power supply be connected with the heating wire in heat storage body, it is characterized in that: described gitter brick has each vertical facade (2) around, the each vertical end face (5) in front and back, a bottom surface (3) with groove (4) penetrating on left and right directions and one to be positioned at directly over bottom surface and to be shorter than the end face (1) of bottom width in the lateral direction, be each inclined-plane or inner concave (6) around between end face (1) and vertical facade (2), the vertical facade laminating of gitter brick left and right block, the vertical end face laminating of front and back block, fit in levels bottom surface and groove notch is just right, form heat storage body length and walk some the upwards through ventilation air ducts surrounded by described groove (7), and form heat storage body width and walk some the upwards through heating wire passages (8) surrounded by inclined-plane or the inner concave of adjacent gitter brick, along heat storage body length trend, the heating wire be arranged in described heating wire passage (8) is divided at least two unit, heating wire (9) in each unit is divided into some groups again, and every nine heating wire are set as one group, the power supply break-make of each unit is carried out and is controlled separately.
2. electrical heating type solid heat storage equipment as claimed in claim 1, is characterized in that: also comprise the earthenware (10) for heating wire (9) end being drawn heat storage body; The center hole wall of earthenware (10) has one section of oared segrne pii (11), and this oared segrne pii (11) is near the outer end of earthenware (10); This oared segrne pii (11) is less than the center hole wall diameter of this oared segrne pii (11) to earthenware (10) the inner to the center hole wall diameter of earthenware (10) outer end.
3. electrical heating type solid heat storage equipment as claimed in claim 1 or 2, is characterized in that: described power supply comprises power supply cabinet (12) and is arranged on the dry-type transformer (20) in power supply cabinet (12); High voltage isolator (16) and the high-pressure vacuum contactor (17) for carrying out break-make control to loop are also installed in power supply cabinet (12); High voltage isolator (16) is connected with the high pressure end of incoming cables (14) for connecting electrical network higher level switch, high voltage isolator (16) also connects the input of high-pressure vacuum contactor (17) by line bank, the output of high-pressure vacuum contactor (17) is connected the high voltage input terminal (19) of dry-type transformer (20) with insulator (18) by line bank, the low-voltage output (13) of dry-type transformer (20) is connected with low-voltage output cord; Also be provided with the voltage sensor (4) be connected with described high voltage isolator (16) in power supply cabinet (12), this voltage sensor (4) is connected with the high voltage display device that the cabinet door of power supply cabinet (12) is arranged; The cabinet door of described power supply cabinet (12) is also provided with transformer temperature controller; Described dry-type transformer (20) bottom is provided with blower fan, and top is provided with fan, and rotation and the stopping of described blower fan and fan control by described transformer temperature controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169131.7A CN104792009B (en) | 2015-04-10 | 2015-04-10 | Electrical heating type solid heat storage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510169131.7A CN104792009B (en) | 2015-04-10 | 2015-04-10 | Electrical heating type solid heat storage equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104792009A CN104792009A (en) | 2015-07-22 |
| CN104792009B true CN104792009B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510169131.7A Active CN104792009B (en) | 2015-04-10 | 2015-04-10 | Electrical heating type solid heat storage equipment |
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| CN (1) | CN104792009B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204760A (en) * | 2017-12-28 | 2018-06-26 | 黑龙江特通电气股份有限公司 | Solid heat storage brick laying structure and solid heat storage electric boiler |
| CN113834361A (en) * | 2021-08-31 | 2021-12-24 | 中国船舶重工集团公司第七0三研究所 | Temperature control method for longitudinal multi-zone heat storage of solid-state heat storage device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1029401A (en) * | 1962-01-16 | 1966-05-11 | Adolf Muckenfuss Senior | An electric storage heater consisting of core plates and heating coils |
| GB2241569A (en) * | 1990-03-02 | 1991-09-04 | Creda Ltd | Boilers |
| JP2008255766A (en) * | 2007-04-05 | 2008-10-23 | Kanemoto Kiyotsugu | Brick for heat storage and cold storage having space for piping or the like for cooling and heating |
| CN101581499A (en) * | 2008-05-14 | 2009-11-18 | 北京儒田科技有限公司 | Electric heating tube thermal storage electric heater for automatically controlling heat producing and radiating time |
| CN101660804A (en) * | 2009-09-22 | 2010-03-03 | 班允涛 | Geothermic heat-storage electric heater |
| CN202993332U (en) * | 2012-07-24 | 2013-06-12 | 卢梅珍 | Solid heat storage type electric heater |
-
2015
- 2015-04-10 CN CN201510169131.7A patent/CN104792009B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1029401A (en) * | 1962-01-16 | 1966-05-11 | Adolf Muckenfuss Senior | An electric storage heater consisting of core plates and heating coils |
| GB2241569A (en) * | 1990-03-02 | 1991-09-04 | Creda Ltd | Boilers |
| JP2008255766A (en) * | 2007-04-05 | 2008-10-23 | Kanemoto Kiyotsugu | Brick for heat storage and cold storage having space for piping or the like for cooling and heating |
| CN101581499A (en) * | 2008-05-14 | 2009-11-18 | 北京儒田科技有限公司 | Electric heating tube thermal storage electric heater for automatically controlling heat producing and radiating time |
| CN101660804A (en) * | 2009-09-22 | 2010-03-03 | 班允涛 | Geothermic heat-storage electric heater |
| CN202993332U (en) * | 2012-07-24 | 2013-06-12 | 卢梅珍 | Solid heat storage type electric heater |
Non-Patent Citations (1)
| Title |
|---|
| 浅析电蓄热采暖系统的应用;严燕冰;《建筑监督检测与造价》;20110630;第4卷(第6期);30-32 * |
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| CN104792009A (en) | 2015-07-22 |
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