CN107796252A - A kind of industrial exhaust heat cross-season heat-storing device - Google Patents

A kind of industrial exhaust heat cross-season heat-storing device Download PDF

Info

Publication number
CN107796252A
CN107796252A CN201710736860.5A CN201710736860A CN107796252A CN 107796252 A CN107796252 A CN 107796252A CN 201710736860 A CN201710736860 A CN 201710736860A CN 107796252 A CN107796252 A CN 107796252A
Authority
CN
China
Prior art keywords
heat
water
thermal store
storing device
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710736860.5A
Other languages
Chinese (zh)
Other versions
CN107796252B (en
Inventor
杨旭东
郭放
刘富军
宿颖波
张俊月
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chifeng Fulong Thermal LLC
Chifeng Ran Energy Polytron Technologies Inc
Tsinghua University
Original Assignee
Chifeng Fulong Thermal LLC
Chifeng Ran Energy Polytron Technologies Inc
Tsinghua University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chifeng Fulong Thermal LLC, Chifeng Ran Energy Polytron Technologies Inc, Tsinghua University filed Critical Chifeng Fulong Thermal LLC
Priority to CN201710736860.5A priority Critical patent/CN107796252B/en
Publication of CN107796252A publication Critical patent/CN107796252A/en
Application granted granted Critical
Publication of CN107796252B publication Critical patent/CN107796252B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0052—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using the ground body or aquifers as heat storage medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0078—Heat exchanger arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Abstract

The invention discloses a kind of industrial exhaust heat cross-season heat-storing device, including：Thermal store, multiple one fractions/water collector, multiple two fractions/water collector, plate type heat exchanger, softening hydrotreater, replenishing water tank of water, circulating pump, small pump, water treatment facilities, multigroup valve, multiple temperature sensors, multiple temperature transmitters, multiple flowmeters, multiple pressure sensors, multiple YEs, magnetic valve, data acquisition unit, PLC, touch screen；The device stores the industrial exhaust heat more than needed of non-heating season using underground thermal store, and heat extraction is used for into district heating in Heating Season, by heat exchanging pipe connected mode in the thermal store of optimization, realizes the purpose for reducing thermal store heat waste and improving heat exchange efficiency；For the control system of heat-storing device by controlling unlatching/closing of each sectional valve of heat-storing device, heat accumulation partition conbination form is called in switching, realizes that heat-storing device leaving water temperature controls, to meet art production process for stablizing the requirement of supply and return water temperature.

Description

A kind of industrial exhaust heat cross-season heat-storing device
Technical field
The present invention relates to a kind of industrial exhaust heat cross-season heat-storing device, belong to district heating technical field.
Background technology
China possesses abundant industrial waste heat resource, wherein more than the low-grade industry of 30 DEG C -100 DEG C this temperature ranges Heat is largely discharged into environment, and is not utilized effectively.Supplied if this partial heat can be applied to city and concentrated Hot field, high energy consumption and high pollution caused by largely alleviating central heating pattern of the China based on coal-burning stove for heating Problem, bring considerable energy-conserving and environment-protective income.By being continually striving to for researcher, building for low-grade industrial exhaust heat at present Heating application is built, has been formd a set of comprising theory, method, the technical system of instrument.However, the seasonality of heating demand is not Equilibrium problem limits scale application of the low-grade industrial exhaust heat in heating field.In non-heating season, because no heat supply needs Ask, residual heat resources can only be to environmental emission, and can not be utilized effectively, and which results in the waste of residual heat resources, reduces and is System utilization rate.Therefore, carry out cross-season heat-storing, the industrial exhaust heat of non-heating season is stored, and extract and be used in Heating Season Central heating, it is to solve this problem, improves industrial exhaust heat system availability and the key of traditional energy substitution rate.
, it is necessary to problem in terms of solving following four for carrying out low-grade across the season storage of industrial exhaust heat：When The heat accumulation mode such as initial cost problem --- water tank, phase-change thermal storage is limited to higher initial cost, is suitable only for small-scale short-term heat accumulation； Second, thermal loss problem --- cross-season heat-storing is generally larger, and the heat storage cycle is longer than short-term heat accumulation, if Thermal store thermal loss exceedes reasonable level, will cause a large amount of energy dissipations, can not meet heating demand；Third, temperature grade is damaged Mistake problem --- during heat storage and extraction, the Irreversible factor such as temperature difference heat exchange is inevitably to storing heat Grade cause damage, for own temperature grade for not high low-grade industrial exhaust heat, it is necessary to take measures reduce across Season heat-storing/take the temperature grade in thermal process to lose, to ensure that heat grade disclosure satisfy that heating demands；Fourth, system operation Regulation problem --- due to being related to production process, industrial exhaust heat system is more strict for keeping Inlet and outlet water temperature stabilization to have Requirement.And if cross-season heat-storing is a cyclical heat transmission link with very big thermal inertia --- take no action to, store up Hot temperature can within one cycle of operation a wide range of consecutive variations.Therefore, it is necessary to take technological means to realize to across season Effective control of heat-storing device leaving water temperature, it is set to meet art production process for the stable requirement for passing in and out coolant-temperature gage.
The content of the invention
Present invention solves the technical problem that it is：Overcome prior art insufficient, there is provided a kind of industrial exhaust heat cross-season heat-storing dress Put, without extra purchase/processing heat accumulating, construction technology is simple, therefore has good economy.And the present invention can have Effect reduces the thermal loss of thermal store, realizes in heat accumulation pattern and takes thermal store inner loop Working fluid flow direction under heat pattern Switching, to improve the Temperature Matching characteristic between heat-storage medium and heat exchanging fluid, heat transfer temperature difference is reduced, improve heat exchange efficiency, it is real The lifting of existing heat accumulation temperature grade.Control system can automatically control called heat accumulation of a certain moment according to device leaving water temperature Subregion or partition conbination, so that the permission that the leaving water temperature of the present apparatus is controlled in its setting value within the entire run cycle is inclined In poor scope, the requirement of the Inlet and outlet water temperature stability of production process requirement is met.
The technical scheme that the present invention solves is：A kind of industrial exhaust heat cross-season heat-storing device, including：Thermal store, Duo Geyi Fraction/water collector, multiple two fractions/water collector, plate type heat exchanger, softening hydrotreater, softening water tank, circulating pump, small pump, It is water treatment facilities, multigroup valve, multiple temperature sensors, multiple temperature transmitters, multiple flowmeters, multiple pressure sensors, more Individual YE, magnetic valve, data acquisition unit, PLC；
Thermal store is used for the storage of industrial exhaust heat；One fraction/water collector, for distributing and collecting each heat accumulation point in thermal store The circular flow in area；Two fractions/water collector, for distributing and collecting each branch road of heat exchanging pipe in thermal store in single subregion Circular flow；Plate type heat exchanger, for the cycle fluid in each pipeline of thermal store and heat storage fluid or take the heat exchange of hot fluid；It is soft Water chemical treatment device, the water treatment for device water supplement port to be entered deliver to replenishing water tank of water for softened water；Softening water tank, it is used for Cache softened water；Small pump, softened water can be taken from softening water tank, for providing moisturizing power for heat-storing device；Circulating pump, use Cycle fluid in for thermal store heat exchanging pipe provides circulation power；Water treatment facilities, in heat-storing device heat exchanging pipe The dirty class of cycle fluid is prevented and removed；Valve, installed in the connecting line of one fraction/between water collector and plate type heat exchanger At upper and each bifurcations of one fraction/water collector, switch for the switching to subregion in thermal store and operational mode；Temperature passes Sensor, the temperature of cycle fluid in the temperature field and heat-storing device for measuring thermal store；Temperature transmitter, by TEMP The temperature signal that device measures is converted to electric signal or data signal is delivered to data acquisition unit；Flowmeter, for measuring heat accumulation dress The circular flow of heat exchanging pipe in each subregion of global cycle flow and thermal store put, and by flow signal pick-up be electric signal or Data signal is delivered to data acquisition unit；Pressure sensor, for measuring the pressure at heat-storing device circulation line diverse location, And pressure signal pick-up is delivered to data acquisition unit for electric signal or data signal；YE is arranged on each valve, The control command of PLC can be received, each valve opening in heat-storing device is adjusted and feeds back its opening amount signal, and will reflection The electric signal or data signal of its aperture are sent to data acquisition unit；Magnetic valve receives the on-off model of PLC, control Connect the open and close of the water pipe of heat-storing device water supplement port and soft water processor；It is each that data acquisition unit is used for heat-storing device The collection of temperature, flow, pressure, valve opening or on-off model, and the signal collected is sent to PLC；PLC Temperature, flow, pressure, valve opening or the on-off model of controller receiving data collector, according to control algolithm, it can control Each YE, circulating pump, magnetic valve, small pump in system processed.
Further, two fractions/water collector corresponding to each subregion of thermal store passes through connecting line and one fraction/water collector respectively A bifurcations be connected, and valve Va1, Vb1, Vc1, Vd1, Ve1, Vf1 are set respectively at above-mentioned each bifurcations；Storage Hot each two fractions of subregion of body/water collector 3-A, 3-B, 3-C, 3-D, 3-E, 3-F passes through connecting line and one fraction/water collector respectively A bifurcations be connected, and valve Va2, Vb2, Vc2, Vd2, Ve2, Vf2 are set respectively at above-mentioned each bifurcations；One The mouth that collects of fraction/water collector is connected by connecting line with valve V1, V2 one end, the valve V1 other end respectively with it is board-like The secondary side delivery port of heat exchanger and valve V3 one end are connected, the valve V2 other end water inlet with water treatment facilities respectively And valve V4 one end is connected；One fraction/water collector collects other end phase of the mouth by connecting line and valve V3, V4 Even,
The delivery port of water treatment facilities by connecting line and the filter on connecting line respectively with circulation in parallel The suction inlet of pump is connected, and the check-valves of the delivery port of circulating pump by connecting line and on the connecting line changes with board-like The secondary side water inlet of hot device is connected；The water supplement port of heat-storing device passes through connecting line and the electromagnetism on the connecting line Valve Vmu1 is connected with the water inlet of soft water processor, and the delivery port of soft water processor is entered by connecting line and softening water tank The mouth of a river is connected, the delivery port of softening water tank by connecting line and the filter on connecting line respectively with benefit in parallel The suction inlet of water pump is connected, the delivery port of small pump respectively by connecting line and the valve Vmu1 on the connecting line, Vmu2 is connected with a bifurcations of one fraction/water collector；
Two flow sensors respectively on the pipeline that is exported to device of primary side water inlet of plate type heat exchanger 6 and On plate type heat exchanger to the secondary side oral siphon road of circulating pump；
Pressure sensor is located at each of the import and export of small pump, the import and export of circulating pump and plate type heat exchanger respectively Import and export YE respectively with valve V1, V2, V3, V4, Va1, Vb1, Vc1, Vd1, Ve1, Vf1, Va2, Vb2, Vc2, Vd2, Ve2, Vf2 are connected, for adjusting the aperture of above-mentioned each valve；
Each subregion is provided with thermometric well in thermal store, is provided with multiple temperature measuring points in thermometric well, and the temperature measuring point in thermometric well leads to Cross shielding line to be connected in series, temperature transmitter is delivered in connection afterwards；At each bifurcations of one fraction/water collector and plate-type heat-exchange Each import and export of device is equipped with temperature measuring point, and liquid level gauge is provided with softening water tank.
Further, the thermal store of heat-storing device is arranged in underground, be a positive six prismsby body, and it is in the horizontal plane It is projected as a ratio between regular hexagon, radius and the thermal store height of regular hexagon circumscribed circle preferably greater than or equal to 1；Pressed in thermal store Heat exchange drilling is equally spaced according to 3.5m-5m, heat exchange drilling internal diameter is preferably 150mm-200mm, and installation U-tube, U-shaped in drilling Sealed between pipe and heat exchange drilling using backfilling material.
Further, thermal store is divided into six independent heat accumulation subregions, and partition method is thrown for connection thermal store horizontal plane The regular hexagon circumscribed circle central point of shadow and each summit of hexagon, thermal store is divided into the Rhizoma Sparganii that six sections are equilateral triangle Post, each section are that the triangular prism of equilateral triangle is an independent heat accumulation subregion, and each heat accumulation subregion is parallel relationship, i.e., straight Connected one fraction/water collector and assignment of traffic is carried out to each subregion with collecting.
Further, U-tube is provided with the heat exchange drilling of each heat accumulation subregion of thermal store, U-tube is divided into some groups, each packet U-tube quantity is equal, and each U-tube in single packet is connected in series, and the U-tube of series connection radiates to the periphery from thermal store center； Each branch circuit parallel connection connection that the U-tube that each group is connected in single heat accumulation subregion is formed, each branch road pass through the heat accumulation subregion pair The one group of two fractions/water collector answered carries out assignment of traffic and collection to each branch road in the heat accumulation subregion.
Further, in addition to control system, control system can using stable heat-storing device leaving water temperature as control targe, By contrasting the leaving water temperature of heat-storing device and the water number that goes out of setting, switching is called thermal store subregion or partition conbination, that is, controlled Cycle fluid in thermal store, it is set only to be flowed in the circulation line of called thermal store subregion, to realize to heat-storing device The control of leaving water temperature, stable return water temperature is provided for industrial afterheat recovery system.
Further, control system can make heat-storing device have two kinds of operational modes, respectively heat accumulation pattern and take hot-die Formula；Under heat accumulation pattern, high temperature fluid flows into from heat-storing device entrance, by plate type heat exchanger by the heat exchange of high temperature fluid To cycle fluid, cycle fluid circulates under circulating pump driving, discharges heat into thermal store heat exchanging pipe and to thermal store Amount, continue to absorb the heat of high temperature fluid subsequently back into plate type heat exchanger, after high temperature fluid discharges heat, temperature reduces, from storage Thermal outlet outflow；In the case where taking heat pattern, cryogen from heat-storing device entrance flow into, by plate type heat exchanger by heat from Cycle fluid side absorbs heat, and cycle fluid circulates under circulating pump driving, into thermal store heat exchanging pipe and from heat accumulation Body absorbs heat, continues to discharge heat to cryogen subsequently back into plate type heat exchanger, after cryogen absorbs heat, temperature liter Height, export and flow out from heat-storing device.
Further, heat-storing device by U-tube connected mode from center to surrounding radiant type that connected in thermal store from and The thermal stratification inside thermal store is realized in flow direction of the switching cycle fluid in heat exchanging pipe under different operational modes, with drop The thermal loss of low thermal store, improve the heat exchange efficiency of heat-storing device；Under heat accumulation pattern, control system is located at one by switching Being turned on and off for valve on the circulation line of fraction/between water collector and plate type heat exchanger, makes cycle fluid from thermal store Flow to the periphery at center；In the case where taking heat pattern, control system is by switching positioned at one-level point/between water collector and plate type heat exchanger Circulation line on valve be turned on and off, make cycle fluid from thermal store periphery to center flow.
Further, control system is by checking that the liquid level signal of softening water tank determines magnetic valve Vmu1State, that is, work as liquid level Meter feedback liquid level signal allows lower limit H less than itmin, PLC, which is sent, orders control magnetic valve to be opened；Work as level gauge Feedback liquid level signal reaches its allowable upper limit value Hmax, PLC, which is sent, orders control magnetic valve Vmu1Close；Control system according to The operational mode of small pump pressure at inlet and system determines small pump, magnetic valve Vmu2、Vmu3State, i.e., when moisturizing is pumped into Pressure value allows lower limit P less than it at mouthfulmin, PLC sends order control small pump 11 and opened, now, if heat accumulation system System is in heat accumulation mode operation, then Vmu2Open, Vmu1Close, if system is in when taking the heat pattern to run, Vmu1Open, Vmu2Close Close, reach its higher limit P to small pump pressure at inletmax, PLC, which is sent, orders, and stops moisturizing pump operation, closes electricity Magnet valve Vmu1And Vmu2；When small pump breaks down, small pump is replaced moisturizing pump operation by control system automatically.
Further, the incrustation scale of the cycle fluid, including：Physical, biological, chemically dirty class.
The present invention compared with prior art the advantages of be：
(1) cost of investment of the invention is well below other heat accumulations such as extensive water tank, heat accumulation pond, phase-change heat-storage materials Mode, it is adapted in the large-scale promotion of central heating field；
(2) present invention realizes the temperature gradually successively decreased from thermal store center to surrounding by the heat exchanging pipe arrangement of optimization Layering, so as to effectively reduce the thermal loss of thermal store, improve heat exchange efficiency；
(3) present invention switches fluid flow direction in thermal store heat exchanging pipe according to system difference operational mode, reduces Energy grade loss in heat-storing device heat transfer process caused by the temperature difference exchanges heat；
(4) control mode that the present invention is switched by thermal store subregion, realize heat-storing device leaving water temperature in its complete fortune Automatically controlling in the row cycle, enable the invention to meet requirement of the art production process for stablizing supply and return water temperature, be applicable In industrial exhaust heat heat accumulation.
(5) device of the invention is changed by the use of underground as heat-storage medium by the U-tube being embedded in soil Heat, industrial exhaust heat is stored in soil, without extra purchase/processing heat accumulating, construction technology is also relatively simple, therefore has There is good economy.The present invention by using connected mode from center to surrounding that radiated to the U-tube buried in thermal store, The temperature gradient distribution gradually successively decreased from center to ambient temperature inside thermal store is realized, can effectively reduce the heat of thermal store Loss.
(6) the supporting automatic control system of heat-storing device of the invention is located at heat-storing device circulation line upper valve by switching Unlatching/closing of door, realize heat accumulation pattern and under taking heat pattern thermal store inner loop Working fluid flow direction switching, to change Kind Temperature Matching characteristic between heat-storage medium and heat exchanging fluid, heat transfer temperature difference is reduced, heat exchange efficiency is improved, realizes heat accumulation temperature The lifting of grade.
(7) thermal store of device of the invention is divided into some independent heat accumulation subregions, and control system can be according to device Leaving water temperature automatically controls heat accumulation subregion or the partition conbination that a certain moment is called, so that the leaving water temperature of the present apparatus is complete It is controlled in the whole cycle of operation in the range of the tolerance of its setting value, meets the disengaging water temperature of production process requirement Spend the requirement of stability.
Brief description of the drawings
Accompanying drawing 1 is a kind of industrial exhaust heat cross-season heat-storing apparatus system schematic diagram；
Accompanying drawing 2 is U-tube vertical direction section in a kind of industrial exhaust heat cross-season heat-storing device thermal store drills and drilled And top view；
Accompanying drawing 3 is U-tube connection signal in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Figure；
Accompanying drawing 4 is that horizontal pipe trench arrangement is shown in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 It is intended to；
Accompanying drawing 5 is branch road A horizontal tubes connection in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Schematic diagram；
Accompanying drawing 6 is branch road B horizontal tubes connection in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Schematic diagram；
Accompanying drawing 7 is branch road C horizontal tubes connection in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Schematic diagram；
Accompanying drawing 8 is branch road D horizontal tubes connection in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Schematic diagram；
Accompanying drawing 9 is branch road E horizontal tubes connection in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Schematic diagram；
Accompanying drawing 10 is that branch road F horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram；
Accompanying drawing 11 is that branch road G horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram；
Accompanying drawing 12 is that branch road H horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram；
Accompanying drawing 13 is that branch road I horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram；
Accompanying drawing 14 is that branch road J horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram；
Accompanying drawing 15 is that branch road K horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram；
Accompanying drawing 16 is that branch road L horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram；
Accompanying drawing 17 is that branch road M horizontal tubes connect in the single subregion of industrial exhaust heat cross-season heat-storing device thermal store in embodiment 1 Connect schematic diagram.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
The present invention key issue that low-grade industrial exhaust heat stores across season for more than, the present invention propose a kind of industry Waste heat cross-season heat-storing device.The device is carried out by the use of underground as heat-storage medium by the U-tube being embedded in soil Heat exchange, industrial exhaust heat is stored in soil.Without extra purchase/processing heat accumulating, construction technology is also relatively simple, therefore With good economy.The present invention to the U-tube buried in thermal store by using the connection side radiated from center to surrounding Formula, the temperature gradient distribution gradually successively decreased from center to ambient temperature inside thermal store is realized, can effectively reduce thermal store Thermal loss.The supporting automatic control system of heat-storing device by switch the unlatching of the valve on the heat-storing device circulation line/ Close, realize heat accumulation pattern and under taking heat pattern thermal store inner loop Working fluid flow direction switching, to improve heat accumulation Jie Temperature Matching characteristic between matter and heat exchanging fluid, heat transfer temperature difference is reduced, improve heat exchange efficiency, realize carrying for heat accumulation temperature grade Rise.The thermal store of the present apparatus is divided into some independent heat accumulation subregions, and control system can be controlled automatically according to device leaving water temperature Heat accumulation subregion or the partition conbination that a certain moment is called are made, so that the leaving water temperature of present apparatus quilt within the entire run cycle Control meets wanting for the Inlet and outlet water temperature stability that production process requires in the range of the tolerance of its setting value Ask.
A kind of industrial exhaust heat cross-season heat-storing device of the present invention, its heat-storing device building block include thermal store, multiple One fraction/water collector, multiple two fractions/water collector, plate type heat exchanger, softening hydrotreater, replenishing water tank of water, circulating pump, moisturizing It is pump, water treatment facilities, multigroup valve, multiple temperature sensors, temperature transmitter, multiple flowmeters, multiple pressure sensors, multiple YE, magnetic valve, variable-frequency governor, data acquisition unit, PLC, touch screen；
The function and specific implementation of various parts of the present invention are respectively described below：
Described thermal store, refer to the part for being used for heat storage in the present invention, thermal store of the invention is, it is necessary to pass through Underground is drilled, U-tube installation, drilling backfill, horizontal tube connection etc. technique be process；Its processing method is： One piece of regular hexagon vacant lot is selected on the ground as heat accumulation field, is equally spaced drilling according to 3.5m-5m in heat accumulation field, is made Bore operation is carried out to selected bore position with rig, forms diameter 150mm-200mm, 40-100m of depth drilling is some； Prefabricated U-tube down tube is arranged in drilling, U-tube material can select the common tubing such as PE, PVC, and U-tube caliber can Selected in the range of De25-De40, the distance of the top interface of two away from U-tube branch roads of U-shaped elbow of U-tube and drilling Deep equality；After U-tube installation terminates, the perfusion backfill material into drilling, using backfill material by the space between U-tube and drilling Sealing, backfill material use cement mortar；The gap between drilling after terminating is backfilled, usage mining machine excavates horizontal pipe trench, Pipe trench depth 1.5m --- 2m, pipe trench width 1m --- 2m, horizontal connection tube is laid in each pipe trench, and utilize horizontal connection tube U-tube in each drilling is attached, each group U-tube some branch roads first in series, each branch road is connected in parallel to the branch again Corresponding to thermal store subregion where road in each bifurcations of two fractions/water collector, from horizontal connection tube；Finally, using soil Each pipe trench is backfilled, place is carried out smooth above thermal store, that is, completes the processing of thermal store in the present invention.
One described fraction/water collector, two fractions/water collector refer in the present invention be used for cycle fluid assignment of traffic with The device of collection；Functionally see, be divided to/water collector has assignment of traffic and two kinds of functions of flow collection, but any instant can only Realize one of which function, that is, divide/water collector can only be used as one of water knockout drum or water collector use at any one time；From Seen in structure, point/water collector have one collect mouth and some bifurcations, its concrete function according to working medium divide/water collector in Depending on flow direction, when cycle fluid is collected mouthful by each bifurcations flow direction, point/water collector is water collector；When cycle fluid by When collecting mouth and flowing to each bifurcations, point/water collector is water knockout drum；The one-level, two level refer to for the equipment in flow system flow For precedence relationship in distribution, in the present system, cycle fluid first passes through the distribution of one-level water knockout drum, into two fraction water Device, then by secondary water segregator distribution enter thermal store heat exchanging pipe in exchange heat, heat exchange terminate after, first pass through two level water collector Collect into one fraction/water collector, then by one-level water collector collecting into plate type heat exchanger exchange heat, one or two fractions/collection The actual functional capability of hydrophone does not have difference, is assignment of traffic/collection, using conventional products；The present invention is according to different fortune Row mode, by valve transfer, each water knockout drum, the flow direction in water collector are realized, so as to realize the work(of water knockout drum, water collector Can switching.
Described softening hydrotreater, sofening treatment is carried out for the moisturizing water source to heat-storing device, using conventional products .
Described replenishing water tank of water, for storing softened water, using conventional products.
Described circulating pump, circulation power is provided for the cycle fluid in heat-storing device heat exchanging pipe, using conventional production Product.
Described small pump, for providing moisturizing power for heat-storing device, using conventional equipment.
Described water treatment facilities, in heat-storing device heat exchanging pipe cycle fluid it is physical, biological, chemically The prevention and removing of dirty class, using conventional products.
Described valve, by adjusting the opening and closing combination of each valve, the thermal store that cycle fluid passes through can be switched Subregion, switch cycle fluid flow direction in thermal store heat exchanging pipe, ball valve, butterfly valve can be used, using conventional products.
Described temperature sensor, the water temperature in temperature field and thermal store heat exchanging pipe for measuring thermal store can be with Using various types of thermocouples of 0-100 DEG C of temperature range of suitable measurement, thermal resistance or analog and digital thermometric chip, Such as PT100 RTDs, DS18B20 thermometric chips, using conventional products.
Described temperature transmitter, the temperature signal for temperature sensor to be measured are converted to electric signal or data signal Data acquisition unit is delivered to, the temperature transmitter that can be adapted therewith according to the temperature sensor type matching of selection, using normal Advise product.
Described flowmeter, heat exchanging pipe follows in the global cycle flow and each subregion of thermal store for detecting the present apparatus Circulation, and be that electric signal or data signal are delivered to data acquisition unit by flow signal pick-up, the range of flowmeter and is applicable Medium needs and is measured flow velocity and cycle fluid type matching, can use electromagnetic flowmeter, vortex-shedding meter, turbine flow The product that all satisfactions such as meter require, using conventional products.
Described pressure sensor, for measuring the pressure at heat-storing device circulation line diverse location, and pressure is believed Number pick-up is that electric signal or data signal are delivered to data acquisition unit, is needed from pressure sensor range with being measured pressure phase Matching, using conventional products.
Described YE, the instruction of PLC is received, the aperture of control valve, part swinging can be used YE or more rotary electric actuators；Selected YE is it is necessary to have opening amount signal feedback function, i.e., electric The electric signal for reflecting its aperture or data signal can be sent to controller or data acquisition unit by dynamic actuator, using conventional production Product.
Described magnetic valve, there are unlatching/closing two states, the on-off model exported by receiving controller, control Its unlatching/closing is made, the control to system water supplement is realized, using conventional products.
Described data acquisition unit, adopted for heat-storing device each temperature, flow, pressure, valve opening, on-off model Collection, and the signal collected is sent to PLC, using conventional products.
Described PLC, temperature, flow, pressure, valve opening, switching value for receiving data acquisition unit are believed Number, according to control algolithm, each YE, circulating pump, magnetic valve, small pump in control system, it is using conventional products Can.
Described touch screen, for providing human-computer interaction interface, the configuration interface of display system and operation information, and provide The manual control function of user, using conventional products.
Also include control system, control system divide/connects by switching positioned at one-level between water collector and plate type heat exchanger Unlatching/closing of valve on pipeline, realizes the switching to cycle fluid flow direction in thermal store；It is single under heat accumulation pattern Cycle fluid in individual series arm flows from from thermal store outer peripheral areas to thermal store central area, single in the case where taking heat pattern Cycle fluid in individual series arm flows from from thermal store central area to thermal store outer peripheral areas.
Control system switches the thermal store subregion called according to the deviation of the leaving water temperature of the present apparatus and its setting value or divided District's groups are closed, to realize the control to heat-storing device leaving water temperature；
The operation principle of the present invention is：
The present invention has two kinds of operational modes：Heat accumulation pattern and take heat pattern --- under heat accumulation pattern, high temperature fluid from Present apparatus entrance flows into, and is circulated heat exchange to cycle fluid, cycle fluid under circulating pump driving by plate type heat exchanger Flowing, heat is discharged into thermal store heat exchanging pipe and to thermal store, continue to absorb high temperature fluid subsequently back into plate type heat exchanger Heat, high temperature fluid release heat after, temperature reduce, from device export flow out；In the case where taking heat pattern, cryogen is from this dress Posting port flows into, and heat is absorbed into heat from cycle fluid side by plate type heat exchanger, cycle fluid follows under circulating pump driving Circulation moves, and absorbs heat into thermal store heat exchanging pipe and from thermal store, continues subsequently back into plate type heat exchanger to cryogen Heat is discharged, after cryogen absorbs heat, temperature rise, exports and flows out from device.
The thermal store of the present invention is divided into six independent heat accumulation subregions, and partition method is thrown for connection thermal store horizontal plane The regular hexagon circumscribed circle central point of shadow and each summit of hexagon, six equilateral triangles, each positive triangle are divided into by thermal store The corresponding independent heat accumulation subregion of shape.Drilling inside each heat accumulation subregion is divided into some branch roads, and each branch road is included Drilling hole amount is equal, and U-tube is connected in series in drilling.Drilling series connection general principle be：From the brill positioned at thermal store central area Hole connects to the drilling radiant type positioned at thermal store neighboring area.Each branch road is parallel relationship, each branch road and two level in subregion Point/bifurcations of water collector are connected.Each heat accumulation subregion is also parallel relationship, two fractions/collection corresponding to each subregion The mouth that collects of hydrophone is connected with a bifurcations of one fraction/water collector；
Control system divide/is connected by switching according to plant running pattern positioned at one-level between water collector and plate type heat exchanger Unlatching/the closing for each valve taken on road, realizes the function switch for one fraction/water collector and two fractions/water collector, One-level water knockout drum, secondary water segregator i.e. under heat accumulation pattern are in the case where taking heat pattern respectively as one-level water collector and two level water collector Use；One-level water collector and two level water collector under heat accumulation pattern are in the case where taking heat pattern respectively as one-level water knockout drum and two fractions Hydrophone uses；By the above-mentioned means, realizing the switching of cycle fluid flow direction in thermal store heat exchanging pipe, cycle fluid is storing up Flowed in the hot phase from the central area of thermal store to surrounding, four circumferential center flows of the hot phase from thermal store are being taken, so as to realize The temperature gradient distribution that heat accumulation temperature successively decreases from center to surrounding.
The control system of the present apparatus is using stable heat-storing device leaving water temperature as control targe, and PLC is according to heat accumulation The deviation of the leaving water temperature of device and its setting value, unlatching/pass of switching valve at one-level point/each bifurcations of water collector Close, the thermal store subregion or partition conbination for switching calling (control the cycle fluid in thermal store, make it only in called heat accumulation Flowed in the circulation line of body subregion), to realize the control to heat-storing device leaving water temperature, provided for industrial afterheat recovery system Stable return water temperature.
Embodiment 1
The structure of industrial exhaust heat cross-season heat-storing device embodiment 1 of the present invention is as shown in figure 1, wherein, industrial exhaust heat is across season Heat-storing device is saved by thermal store 1 (including six subregions of 1-A, 1-B, 1-C, 1-D, 1-E, 1-F), one fraction/water collector 4-5, two Fraction/water collector 2-3 (2-A, 2-B, 2-C, 2-D, 2-E, 2-F, 3-A, 3-B, 3-C, 3-D, 3-E, 3-F are included, 12 two altogether Fraction/water collector), plate type heat exchanger 6, softening hydrotreater 8, replenishing water tank of water 7, circulating pump 9-10, small pump 11-12, Shui Chu Manage instrument 13, multigroup valve (V1-V4, Va1-Vf1, Va2-Vf2 totally 16 valves), multiple temperature sensors, multiple temperature pick-ups Device, multiple flowmeters, multiple pressure sensors, multiple YEs, magnetic valve, data acquisition unit, PLC, touch-control Screen；
Wherein, heat-storing device is using underground as heat-storage medium, and thermal store 1 is a positive six prismsby body, and it is in the horizontal plane The regular hexagon circumradius of projection is 50m, and heat accumulation field is highly 80m；Drilling is equally spaced according to 4m in heat accumulation field, is bored Hole internal diameter is 150mm, and drill total 468 holes, and drill interior installation U-tube, is sealed between U-tube and drilling using cement mortar； Thermal store is divided into six independent heat accumulation subregions, and partition method is：Outside the regular hexagon for connecting the projection of thermal store horizontal plane Round central point and each summit of hexagon are connect, thermal store is divided into six equilateral triangles (1-A, 1-B, 1-C, 1-D, 1-E, 1-F), The corresponding independent heat accumulation subregion of each equilateral triangle, U-tube packet and connected mode are as shown in Figure 2 in each heat accumulation subregion： U-tube inside subregion is divided into 13 branch roads (A, B, C, D, E, F, G, H, I, G, K, L, M), and each branch road is comprising 6 series connection U-tube (branch road A includes U-tube A1, A2, A3, A4, A5, A6, is sequentially connected in series to inner side on the outside of the thermal store, other each branch roads The rest may be inferred), the horizontal connection pipeline of each branch road collects to positioned at two two fractions/water collectors corresponding to the heat accumulation subregion, Each branch road is connected with a bifurcations of two fractions/water collector.
As shown in figure 4, arranged in the horizontal pipe trench that each branch road horizontal connection tube excavates between U-tube, horizontal tube ditch width 1.5m, depth 2m, the pipe trench arrangement of single subregion are as shown in Figure 3：For single subregion, excavate altogether 14 pipe trench (PDR, PDL, PDB, PD1, PD2, PD3, PD4, PD5, PD6, PD7, PD8, PD9, PD10, PD11), wherein, PDR, PDL be positioned at this subregion and Pipe trench at two neighboring subregion line of demarcation；PDB is the pipe trench at this subregion external boundary line；PD1 is positioned at branch road A and branch Pipe trench between road B drillings；PD2 is the pipe trench between branch road B and branch road C drillings；PD3 is to be bored positioned at branch road C and branch road D Pipe trench between hole；PD4 is the pipe trench between branch road D and branch road E drillings；PD5 is to drill it positioned at branch road E and branch road F Between pipe trench；PD6 is the pipe trench between branch road F and branch road G drillings；PD7 is between branch road H and branch road I drillings Pipe trench；PD8 is the pipe trench between branch road I and branch road J drillings；PD9 is the pipe trench between branch road J and branch road K drillings； PD10 is the pipe trench between branch road K and branch road L drillings；PD11 is the pipe trench between branch road L and branch road M drillings；
Each branch road uses journey arrangement in subregion, and the preferably difference of its length is no more than 5% to ensure that the waterpower of each branch road is put down Weighing apparatus, specific connected mode, such as Fig. 5 --- shown in Figure 17.
Wherein：Branch road A connected mode is as shown in figure 5, connect horizontal connection tube one end of the branch road by the left of subregion two Fraction/water collector sets out, by pipe trench PDB accessible pipe duct PDL, after U-tube A1-A6 is sequentially connected in the pipe trench, continue to Preceding extension passes sequentially through the two fractions/water collector being connected to after pipe trench PDL, PDR, PD7 on the right side of subregion；
Branch road B connected mode as shown in fig. 6, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD1, after U-tube B1-B6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD1, PDL, PDR, PD8, PDB on the right side of subregion；
Branch road C connected mode as shown in fig. 7, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD2, after U-tube C1-C6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD2, PDL, PDR, PD9, PDB on the right side of subregion；
Branch road D connected mode as shown in figure 8, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD3, after U-tube D1-D6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD3, PDL, PDR, PD10, PDB on the right side of subregion；
Branch road E connected mode as shown in figure 9, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD4, after U-tube E1-E6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD4, PDL, PDR, PD11, PDB on the right side of subregion；
Branch road F connected mode is as shown in Figure 10, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD5, after U-tube F1-F6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD5, PDL, PDR, PDB on the right side of subregion；
Branch road G connected mode is as shown in figure 11, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD6, after U-tube G1-G6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD6, PDL, PDR, PDB on the right side of subregion；
Branch road H connected mode is as shown in figure 12, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD7, after U-tube H1-H6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD7, PDR, RDL, PDB on the right side of subregion；
Branch road I connected mode is as shown in figure 13, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD8, after U-tube I1-I6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD8, PDR, PDL, PD1, PDB on the right side of subregion；
Branch road J connected mode is as shown in figure 14, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD9, after U-tube J1-J6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD9, PDR, PDL, PD2, PDB on the right side of subregion；
Branch road K connected mode is as shown in figure 15, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD10, after U-tube K1-K6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD10, PDR, RDL, PD3, PDB on the right side of subregion；
Branch road L connected mode is as shown in figure 16, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PD11, after U-tube L1-L6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PD11, PDR, RDL, PD4, PDB on the right side of subregion；
Branch road M connected mode is as shown in figure 17, connect horizontal connection tube one end of the branch road by two fractions on the left of subregion/ Water collector is set out, and by pipe trench PDB accessible pipe duct PDR, after U-tube M1-M6 is sequentially connected in the pipe trench, continuation is prolonged forward Stretch the two fractions/water collector for passing sequentially through and being connected to after pipe trench PDR, PDL, PD5, PDB on the right side of subregion.
Each two fractions of subregion of thermal store/water collector 2-A, 2-B, 2-C, 2-D, 2-E, 2-F passes through connecting line and one respectively One bifurcations of fraction/water collector 4 are connected, and set respectively at above-mentioned each bifurcations valve Va1, Vb1, Vc1, Vd1、Ve1、Vf1；Each two fractions of subregion of thermal store/water collector 3-A, 3-B, 3-C, 3-D, 3-E, 3-F passes through connecting line respectively Be connected with a bifurcations of one fraction/water collector 5, and set respectively at above-mentioned each bifurcations valve Va2, Vb2, Vc2、Vd2、Ve2、Vf2；One fraction/water collector 4 collects one end phase of the mouth by connecting line with valve V1, V2 in parallel Even, the valve V1 other end is connected with the secondary side delivery port of plate type heat exchanger 6 and valve V3 one end respectively, valve V2's The other end is connected with the water inlet of water treatment facilities 13 and valve V4 one end respectively；The mouth that collects of one fraction/water collector 5 passes through Connecting line is connected with valve V3, V4 one end of parallel connection, and the valve V3 other end is respectively with valve V1 one end and board-like changing The secondary side delivery port of hot device 6 is connected, the valve V4 other end respectively with valve V2 one end and the water inlet of water treatment facilities 13 It is connected；The one end of the water inlet of water treatment facilities 13 respectively with valve V2, V4 is connected, and the delivery port of water treatment facilities 13 passes through connecting tube Road and suction inlet of the filter respectively with two circulating pumps 9,10 of parallel connection on connecting line are connected, circulating pump 9,10 Check-valves and plate type heat exchanger 6 of the delivery port by connecting line and on the connecting line secondary side water inlet phase Even；The water supplement port of heat-storing device passes through connecting line and the magnetic valve Vmu1 on the connecting line and soft water processor 8 Water inlet be connected, softening hydrotreater 8 delivery port be connected by connecting line with the water inlet of softening water tank 7, softening The delivery port of water tank 7 by connecting line and the filter on connecting line respectively with two small pumps 11 in parallel, 12 suction inlet is connected, and the delivery port of in parallel two small pumps 11,12 is respectively by connecting line and positioned at the connecting line On valve Vmu1, Vmu2 be connected with a bifurcations of one fraction/water collector 4,5.
Two flow sensors are respectively on the primary side oral siphon road of plate type heat exchanger 6 and plate type heat exchanger 6 On secondary side oral siphon road；12 pressure sensors are located at the disengaging of the import and export, circulating pump 9,10 of small pump 11,12 respectively Mouthful at and plate type heat exchanger 6 four import and exports；16 YEs respectively with valve V1, V2, V3, V4, Va1, Vb1, Vc1, Vd1, Ve1, Vf1, Va2, Vb2, Vc2, Vd2, Ve2, Vf2 are connected, for adjusting the aperture of above-mentioned each valve； In 90 thermal stores located underground in 106 temperature measuring points；Each subregion, which amounts to, three mouthfuls of thermometric wells, and thermometric well central axis exists Subpoint on horizontal plane is respectively 20m, 30m, 40m apart from the vertex distance that subregion is located at thermal store center, thermometric well diameter 160mm, depth 40m, it is each at horizontal plane 0m, 10m, 20m, 30m, 40m on thermometric well depth direction to place a thermometric Point, temperature measuring point use DS18B20 thermometric chips, and the temperature measuring point in single thermometric well is connected in series by 3 core shielding lines, Zhi Houlian Temperature transmitter is connected to, every 30 temperature measuring points are connected to a temperature transmitter, altogether using 3 temperature transmitters；106 thermometrics Remaining 16 in point respectively at 12 bifurcations of one fraction/water collector 4,5 and plate type heat exchanger 6 four disengaging At mouthful；1 liquid level gauge is changed in water tank positioned at soft.
Across the season plant running pattern of industrial exhaust heat in the present embodiment is divided into heat accumulation pattern and takes heat pattern.When device with During heat accumulation mode operation, a unlatching in circulating pump 9,10, another is used as stand-by pump, and valve V2, V3 are opened, and V1, V4 are closed Close, one fraction/water collector 5 is used as water knockout drum, and one fraction/water collector 4 is used as water collector, two fractions/water collector 2-A, 2-B, 2- C, 2-D, 2-E, 2-F use as water knockout drum, two fractions/water collector 3-A, 3-B, 3-C, 3-D, 3-E, 3-F as water collector；It is high Warm fluid flows into from present apparatus entrance, is discharged heat to the cycle fluid of heat-storing device by plate type heat exchanger 6, from this dress Put outlet outflow；After cycle fluid heat absorption, by the distribution of one-level water knockout drum 5 enter two fractions/water collector (2-A, 2-B, 2-C, 2-D, 2-E, 2-F), then it is interior to thermal store release heat into the U-tube of each branch road of thermal store by the distribution of above-mentioned each water knockout drum Amount, then successively by being returned after the collecting of each two level water collector (3-A, 3-B, 3-C, 3-D, 3-E, 3-F) and one-level water collector 4 Plate type heat exchanger 6 absorbs heat；The present apparatus is with when taking the heat pattern to run, a unlatching in circulating pump 9,10, another conduct Stand-by pump, valve V1, V4 are opened, and V2, V3 are closed, and control one fraction/water collector 4 is used as water knockout drum, and one fraction/water collector 5 is made For water collector, two fractions/water collector 3-A, 3-B, 3-C, 3-D, 3-E, 3-F as water knockout drum, two fractions/water collector 2-A, 2-B, 2-C, 2-D, 2-E, 2-F use as water collector；Cryogen flows into from present apparatus entrance, by plate type heat exchanger 6 from circulation After working medium side absorbs heat, export and flow out from the present apparatus；After cycle fluid heat release heat, entered by the distribution of one-level water knockout drum 4 Two fractions/water collector (3-A, 3-B, 3-C, 3-D, 3-E, 3-F), then enter each of thermal store by the distribution of above-mentioned each water knockout drum The heat stored in thermal store is absorbed in the U-tube on road, then successively passes through each two level water collector (2-A, 2-B, 2-C, 2-D, 2- E, 2-F) and collecting for one-level water collector 5 return to the release receipts heat of plate type heat exchanger 6；
The method that heat-storing device leaving water temperature controls in the present embodiment is：PLC is by monitoring heat-storing device water outlet The deviation of temperature and design temperature, the thermal store subregion that any time cycle fluid passes through is determined, and send switching signal extremely YE on each branching valve of one fraction/water collector, realize calling and the switching of subregion.Specifically, when Heat-storing device leaving water temperature ToutWith setting leaving water temperature TsetDeviation exceed allow maximum deviation range delta Te, i.e., | Tout- Tset|>ΔTe, then subregion will be called to switch over, partition conbination and corresponding each valve switch situation switch according to following subregion Tactful order performs：
1. calling single subregion 1-A, open valve Va1, Va2, close Vb1, Vc1, Vd1, Ve1, Vf1, Vb2, Vc2, Vd2、Ve2、Vf2；
2. calling single subregion 1-B, open valve Vb1, Vb2, close Va1, Vc1, Vd1, Ve1, Vf1, Va2, Vc2, Vd2、Ve2、Vf2；
3. calling single subregion 1-C, open valve Vc1, Vc2, close Va1, Vb1, Vd1, Ve1, Vf1, Va2, Vb2, Vd2、Ve2、Vf2；
4. calling single subregion 1-D, open valve Vd1, Vd2, close Va1, Vb1, Vc1, Ve1, Vf1, Va2, Vb2, Vc2、Ve2、Vf2；
5. calling single subregion 1-E, open valve Ve1, Ve2, close Va1, Vb1, Vc1, Vd1, Vf1, Va2, Vb2, Vc2、Vd2、Vf2；
6. calling single subregion 1-F, open valve Vf1, Vf2, close Va1, Vb1, Vc1, Vd1, Ve1, Va2, Vb2, Vc2、Vd2、Ve2；
7. calling two subregions 1-A, 1-B, open valve Va1, Va2, Vb1, Vb2, close Vc1, Vd1, Ve1, Vf1, Vc2、Vd2、Ve2、Vf2；
8. calling two subregions 1-C, 1-D, open valve Vc1, Vd2, Vc1, Vd2, close Va1, Vb1, Ve1, Vf1, Va2、Vb2、Ve2、Vf2；
9. calling two subregions 1-E, 1-F, open valve Ve1, Ve2, Vf1, Vf2, close Va1, Vb1, Vc1, Vd1, Va2、Vb2、Vc2、Vd2；
10. call three subregions 1-A, 1-B, 1-C, open valve Va1, Va2, Vb1, Vb2, Vc1, Vc2, close Vd1, Vd2, Ve1, Ve2, Vf1, Vf2；
11. calling three subregions 1-D, 1-E, 1-F, valve Vd1, Vd2 are opened, Ve1, Ve2, Vf1, Vf2, closes valve Va1, Va2, Vb1, Vb2, Vc1, Vc2；
12. call all six subregions, valve Va1, Va2, Vb1, Vb2 are opened, Vc1, Vc2, Vd1, Vd2, Ve1, Ve2, Vf1,Vf2；
Control system is by checking that the liquid level signal of softening water tank determines magnetic valve Vmu1State, i.e., when liquid level gauge feed back Liquid level signal allows lower limit H less than itmin, PLC, which is sent, orders control magnetic valve Vmu1Open；When liquid level gauge feeds back liquid Position signal reaches its allowable upper limit value Hmax, PLC, which is sent, orders control magnetic valve Vmu1Close.Control system is according to moisturizing The operational mode of the pressure at inlet of pump 11 and system determines small pump, magnetic valve Vmu2、Vmu3State, i.e., when small pump 11 enters Pressure value allows lower limit P less than it at mouthfulmin, PLC sends order control small pump 11 and opened, now, if at system In heat accumulation mode operation, then Vmu2Open, Vmu1Close, if system is in when taking the heat pattern to run, Vmu1Open, Vmu2Close, Reach its higher limit P to the pressure at inlet of small pump 11max, PLC, which is sent, orders, and stops small pump 11 and runs, closes electricity Magnet valve Vmu1And Vmu2；When small pump 11 breaks down, small pump 12 is switched to operation pump by control system automatically.
Non-elaborated part of the present invention belongs to techniques well known.

Claims (10)

  1. A kind of 1. industrial exhaust heat cross-season heat-storing device, it is characterised in that including：Thermal store (1), multiple one fractions/water collector (4,5), multiple two fractions/water collector (2,3), plate type heat exchanger (6), softening hydrotreater (8), softening water tank (7), circulating pump It is (9,10), small pump (11,12), water treatment facilities (13), multigroup valve, multiple temperature sensors, multiple temperature transmitters, multiple Flowmeter, multiple pressure sensors, multiple YEs, magnetic valve, data acquisition unit, PLC；
    Thermal store (1) is used for the storage of industrial exhaust heat；One fraction/water collector, for distributing and collecting each heat accumulation in thermal store (1) The circular flow of subregion；Two fractions/water collector, it is each for distributing and collecting heat exchanging pipe in thermal store (1) in single subregion The circular flow of branch road；Plate type heat exchanger (6), for the cycle fluid in each pipeline of thermal store and heat storage fluid or take hot fluid Heat exchange；Soften hydrotreater (8), the water treatment for device water supplement port to be entered delivers to replenishing water tank of water for softened water (7)；Softening water tank (7), for caching softened water；Small pump (11,12), softened water can be taken from softening water tank (7), for for Heat-storing device provides moisturizing power；Circulating pump (9,10), for providing circulation for the cycle fluid in thermal store (1) heat exchanging pipe Power；Water treatment facilities (13), for the dirty class of cycle fluid in heat-storing device heat exchanging pipe to be prevented and removed；Valve, Between one fraction/water collector (4,5) and plate type heat exchanger (6) on connecting line and one fraction/water collector (4,5) At each bifurcations, switch for the switching to subregion in thermal store (1) and operational mode；Temperature sensor, for measuring heat accumulation The temperature of cycle fluid in the temperature field of body (1) and heat-storing device；Temperature transmitter, the temperature that temperature sensor is measured are believed Number be converted to electric signal or data signal is delivered to data acquisition unit；Flowmeter, for measuring the global cycle flow of heat-storing device And in each subregion of thermal store heat exchanging pipe circular flow, and be that electric signal or data signal are delivered to by flow signal pick-up Data acquisition unit；Pressure sensor, for measuring the pressure at heat-storing device circulation line diverse location, and pressure signal is become Send and be delivered to data acquisition unit for electric signal or data signal；YE is arranged on each valve, can receive PLC controls The control command of device, adjust each valve opening in heat-storing device and feed back its opening amount signal, and the electric signal that its aperture will be reflected Or data signal is sent to data acquisition unit；Magnetic valve receives the on-off model of PLC, and control connection heat-storing device is mended The mouth of a river and the open and close of the water pipe of soft water processor (8)；Data acquisition unit be used for each temperature of heat-storing device, flow, The collection of pressure, valve opening or on-off model, and the signal collected is sent to PLC；PLC receives Temperature, flow, pressure, valve opening or the on-off model of data acquisition unit, can be in control system according to control algolithm Each YE, circulating pump (9,10), magnetic valve, the state of small pump (11,12).
  2. 2. industrial exhaust heat cross-season heat-storing device as claimed in claim 1, it is characterised in that：Two corresponding to each subregion of thermal store Fraction/water collector is connected by connecting line with a bifurcations of one fraction/water collector (4) respectively, and above-mentioned each Valve (Va1, Vb1, Vc1, Vd1, Ve1, Vf1) is set respectively at bifurcations；Each two fractions of subregion of thermal store (1)/water collector (3- A, 3-B, 3-C, 3-D, 3-E, 3-F) it is connected respectively by connecting line with a bifurcations of one fraction/water collector (5), and And valve (Va2, Vb2, Vc2, Vd2, Ve2, Vf2) is set respectively at above-mentioned each bifurcations；The remittance of one fraction/water collector (4) Total mouth is connected by connecting line with one end of valve (V1, V2), the other end of valve (V1) respectively with plate type heat exchanger (6) One end of secondary side delivery port and valve (V3) is connected, the valve V2 other end respectively with the water inlet of water treatment facilities (13) and One end of valve (V4) is connected；The mouth that collects of one fraction/water collector (5) passes through the another of connecting line and valve (V3, V4) End is connected,
    The delivery port of water treatment facilities (13) by connecting line and the filter on connecting line respectively with circulation in parallel The suction inlet of pump (9,10) is connected, delivery port the stopping by connecting line and on the connecting line of circulating pump (9,10) Valve is returned with the secondary side water inlet of plate type heat exchanger (6) to be connected；The water supplement port of heat-storing device is by connecting line and positioned at this Magnetic valve (Vmu1) on connecting line is connected with the water inlet of soft water processor (8), and the delivery port of soft water processor (8) leads to The water inlet that connecting line is crossed with softening water tank (7) is connected, and the delivery port of softening water tank (7) is by connecting line and positioned at even Suction inlet of the filter respectively with the small pump (11,12) of parallel connection on adapter road is connected, the delivery port point of small pump (11,12) One point of valve (Vmu1, Vmu2) not by connecting line and on the connecting line and one fraction/water collector (4,5) Branch mouth is connected；
    Two flow sensors are respectively on the pipeline that the primary side water inlet of plate type heat exchanger 6 exports to device and board-like On heat exchanger (6) to the secondary side oral siphon road of circulating pump (9,10)；
    Pressure sensor is respectively positioned at the import and export of small pump (11,12), the import and export of circulating pump (9,10) and board-like Each import and export YE of heat exchanger (6) respectively with valve (V1, V2, V3, V4, Va1, Vb1, Vc1, Vd1, Ve1, Vf1, Va2, Vb2, Vc2, Vd2, Ve2, Vf2) it is connected, for adjusting the aperture of above-mentioned each valve；
    Each subregion is provided with thermometric well in thermal store (1), is provided with multiple temperature measuring points in thermometric well, and the temperature measuring point in thermometric well passes through Shielding line is connected in series, and temperature transmitter is delivered in connection afterwards；It is at each bifurcations of one fraction/water collector (4,5) and board-like Each import and export of heat exchanger (6) is equipped with temperature measuring point, and liquid level gauge is provided with softening water tank (7).
  3. A kind of 3. industrial exhaust heat cross-season heat-storing device as claimed in claim 1, it is characterised in that：The thermal store of heat-storing device (1) be arranged in underground, be a positive six prismsby body, its in the horizontal plane be projected as a regular hexagon, outside regular hexagon Connect the ratio between round radius and thermal store (1) height preferably greater than or equal to 1；It is equally spaced and changes according to 3.5m-5m in thermal store (1) Thermic boring, heat exchange drilling internal diameter is preferably 150mm-200mm, and drill interior installation U-tube, is used between U-tube and heat exchange drilling Backfilling material seals.
  4. A kind of 4. industrial exhaust heat cross-season heat-storing device as claimed in claim 1, it is characterised in that：Thermal store (1) is divided The regular hexagon circumscribed circle central point projected for six independent heat accumulation subregions, partition method for connection thermal store (1) horizontal plane With each summit of hexagon, thermal store (1) is divided into the triangular prism that six sections are equilateral triangle, each section is equilateral triangle Triangular prism be an independent heat accumulation subregion, each heat accumulation subregion is parallel relationship, i.e., directly passes through one fraction/water collector pair Each subregion carries out assignment of traffic with collecting.
  5. A kind of 5. industrial exhaust heat cross-season heat-storing device as claimed in claim 3, it is characterised in that：Thermal store (1) each heat accumulation U-tube is provided with the heat exchange drilling of subregion, U-tube is divided into some groups, and each U-tube quantity that is grouped is equal, in single packet Each U-tube is connected in series, and the U-tube of series connection radiates to the periphery from thermal store (1) center；Each group is connected in single heat accumulation subregion Each branch circuit parallel connection connection that U-tube is formed, each branch road is by one group of two fractions/water collector corresponding to the heat accumulation subregion to this Each branch road carries out assignment of traffic and collection in heat accumulation subregion.
  6. A kind of 6. industrial exhaust heat cross-season heat-storing device as described in one of Claims 1 to 5, it is characterised in that：Also include control System processed, control system can be using stable heat-storing device leaving water temperatures as control targe, by the water outlet for contrasting heat-storing device Temperature and the water number that goes out of setting, switching call thermal store (1) subregion or partition conbination, that is, control the circulation industrial in thermal store (1) Matter, it is set only to be flowed in the circulation line of called thermal store (1) subregion, to realize the control to heat-storing device leaving water temperature System, stable return water temperature is provided for industrial afterheat recovery system.
  7. A kind of 7. industrial exhaust heat cross-season heat-storing device as claimed in claim 1, it is characterised in that：Control system can make storage Thermal has two kinds of operational modes, respectively heat accumulation pattern and takes heat pattern；Under heat accumulation pattern, high temperature fluid fills from heat accumulation Posting port flows into, and by plate type heat exchanger (6) by the heat exchange of high temperature fluid to cycle fluid, cycle fluid is in circulating pump (9,10) circulated under driving, heat is discharged into thermal store (1) heat exchanging pipe and to thermal store, subsequently back into plate-type heat-exchange Device (6) continues to absorb the heat of high temperature fluid, and after high temperature fluid discharges heat, temperature reduces, and exports and flows out from heat-storing device； Take under heat pattern, cryogen flows into from heat-storing device entrance, is absorbed heat from cycle fluid side by plate type heat exchanger (6) Heat, cycle fluid circulates under circulating pump (9,10) driving, into thermal store (1) heat exchanging pipe and from thermal store (1) Heat is absorbed, continues to discharge heat to cryogen subsequently back into plate type heat exchanger (6), after cryogen absorbs heat, temperature Rise, export and flow out from heat-storing device.
  8. A kind of 8. industrial exhaust heat cross-season heat-storing device as claimed in claim 7, it is characterised in that：Heat-storing device passes through heat accumulation U-tube connected mode from center to surrounding radiant type that connected in body (1) from and switch cycle fluid under different operational modes and exist The thermal stratification inside thermal store is realized in flow direction in heat exchanging pipe, to reduce the thermal loss of thermal store, improves heat accumulation The heat exchange efficiency of device；Under heat accumulation pattern, control system is by switching positioned at one-level point/water collector (4,5) and plate-type heat-exchange Being turned on and off for the valve on circulation line between device (6), makes cycle fluid be flowed to the periphery from thermal store center；Taking Under heat pattern, control system is by switching the circulation line positioned at one-level point/between water collector (4,5) and plate type heat exchanger (6) On valve be turned on and off, make cycle fluid from thermal store periphery to center flow.
  9. A kind of 9. industrial exhaust heat cross-season heat-storing device as claimed in claim 6, it is characterised in that：Control system passes through inspection The liquid level signal of softening water tank (7) determines magnetic valve (Vmu1) state, i.e., under liquid level gauge feedback liquid level signal allows less than it Limit value Hmin, PLC, which is sent, orders control magnetic valve to be opened；When liquid level gauge feedback liquid level signal reaches its allowable upper limit value Hmax, PLC, which is sent, orders control magnetic valve (Vmu1) close；Control system is according to the pressure at inlet of small pump 11 and is The operational mode of system determines small pump, magnetic valve Vmu2、Vmu3State, i.e., when small pump (11) pressure at inlet value less than its permit Perhaps lower limit Pmin, PLC sends order control small pump (11) and opened, now, if heat reservoir is in heat accumulation pattern fortune OK, then Vmu2Open, Vmu1Close, if system is in when taking the heat pattern to run, Vmu1Open, Vmu2Close, to small pump (11) Pressure at inlet reaches its higher limit Pmax, PLC, which is sent, orders, and stops small pump (11) operation, closes magnetic valve And (Vmu2) (Vmu1)；When small pump (11) breaks down, small pump (12) is replaced small pump (11) by control system automatically Operation.
  10. A kind of 10. industrial exhaust heat cross-season heat-storing device as claimed in claim 6, it is characterised in that：The cycle fluid Incrustation scale, including：Physical, biological, chemically dirty class.
CN201710736860.5A 2017-08-24 2017-08-24 A kind of industrial exhaust heat cross-season heat-storing device Active CN107796252B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710736860.5A CN107796252B (en) 2017-08-24 2017-08-24 A kind of industrial exhaust heat cross-season heat-storing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710736860.5A CN107796252B (en) 2017-08-24 2017-08-24 A kind of industrial exhaust heat cross-season heat-storing device

Publications (2)

Publication Number Publication Date
CN107796252A true CN107796252A (en) 2018-03-13
CN107796252B CN107796252B (en) 2019-11-19

Family

ID=61531671

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710736860.5A Active CN107796252B (en) 2017-08-24 2017-08-24 A kind of industrial exhaust heat cross-season heat-storing device

Country Status (1)

Country Link
CN (1) CN107796252B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108916967A (en) * 2018-07-24 2018-11-30 甘肃德龙地热科技有限公司 A kind of system of using mid-deep strata rock hot well heat accumulation
CN111023603A (en) * 2019-09-30 2020-04-17 阜新宏利新能源供热有限公司 Single-well double-temperature heat exchange device
CN111895477A (en) * 2020-08-03 2020-11-06 石家庄耐波万信息技术有限公司 Industrial waste heat secondary utilization system and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2503251A2 (en) * 2011-03-21 2012-09-26 Robert Egg Storage heat exchanger device
CN203224161U (en) * 2013-04-28 2013-10-02 内蒙古太清光热能源有限公司 Heat storage device
CN103822375A (en) * 2014-03-14 2014-05-28 兰州理工大学 Solar cross-season zoning heat storage device
CN206291515U (en) * 2016-12-09 2017-06-30 赤峰和然节能有限责任公司 The layout structure of underground heat storage underground pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2503251A2 (en) * 2011-03-21 2012-09-26 Robert Egg Storage heat exchanger device
CN203224161U (en) * 2013-04-28 2013-10-02 内蒙古太清光热能源有限公司 Heat storage device
CN103822375A (en) * 2014-03-14 2014-05-28 兰州理工大学 Solar cross-season zoning heat storage device
CN206291515U (en) * 2016-12-09 2017-06-30 赤峰和然节能有限责任公司 The layout structure of underground heat storage underground pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108916967A (en) * 2018-07-24 2018-11-30 甘肃德龙地热科技有限公司 A kind of system of using mid-deep strata rock hot well heat accumulation
CN111023603A (en) * 2019-09-30 2020-04-17 阜新宏利新能源供热有限公司 Single-well double-temperature heat exchange device
CN111895477A (en) * 2020-08-03 2020-11-06 石家庄耐波万信息技术有限公司 Industrial waste heat secondary utilization system and method

Also Published As

Publication number Publication date
CN107796252B (en) 2019-11-19

Similar Documents

Publication Publication Date Title
CN107796252B (en) A kind of industrial exhaust heat cross-season heat-storing device
CN105004067B (en) A kind of solar energy and air-source and heating system
CN109946103A (en) A kind of underground heat parameter test system and method based on mid-deep strata ground heat exchanger
CN107355684A (en) A kind of accident of pipeline network waterpower monitoring experimental system and its method for realizing fault identification
CN104374427B (en) The soil body hot moisture migration effect test system and method in a kind of earth source heat pump operation
CN101299000B (en) Heat exchange tester of ground source heat pump underground heat exchanger
CN103453566A (en) Serial heating and water heating system
CN209782785U (en) distributed building hydraulic balance adjusting system
CN105953292A (en) Heating supply system adopting clean energy and construction method thereof
CN107152709A (en) A kind of efficient cascade utilization heating system that water is mixed with once net backwater
CN104280257A (en) Heat exchange capability testing equipment of underground heat exchanger of ground source heat pump
CN107228397A (en) A kind of solar-heating heating system based on across season soil thermal storage
CN209801590U (en) User distributed heat supply energy-saving device
CN103018274A (en) Rock-soil thermophysical property tester
CN210035682U (en) Solar energy seasonal soil energy storage heating system
CN205783297U (en) Space energy central hot-water system
CN202485100U (en) Balancing device for water distributor and water collector in heating system
CN207214205U (en) A kind of efficient cascade utilization heating system that water is mixed with once net backwater
CN207214517U (en) It is a kind of to utilize deep foundation pit support and the heat-exchange system of underground chamber outer wall soil source
CN107477654A (en) A kind of air energy heating cycle system
CN209782784U (en) geothermal and hanging piece mixed heat supply type adjusting system
CN208238300U (en) It is a kind of novel mostly into single vertical ground heat exchanger of centralized water return out
CN102692150A (en) Seasonal heat storage system for exchanging heat by utilizing buried pipe
CN206739494U (en) A kind of energy bus system
CN209386397U (en) A kind of graphene electric heating system based on solar energy auxiliary heating

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant