CN207990747U - Big temperature difference heat-exchanger rig - Google Patents
Big temperature difference heat-exchanger rig Download PDFInfo
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- CN207990747U CN207990747U CN201721706779.4U CN201721706779U CN207990747U CN 207990747 U CN207990747 U CN 207990747U CN 201721706779 U CN201721706779 U CN 201721706779U CN 207990747 U CN207990747 U CN 207990747U
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Abstract
The utility model provides a kind of big temperature difference heat-exchanger rig, and heat supply network high-temperature-hot-water enters after high-temperature evaporator heat release becomes middle warm water, continues heat release into cryogenic vaporizer and becomes low-temperature water heating, low-temperature water heating returns to heat supply network water return pipeline；High-temperature-hot-water flows outside heat exchanger tube from top to bottom in high-temperature evaporator, and heating agent water evaporation generates steam in heat exchanger tube；Low-temperature water heating flatly flows heat release in heat exchanger tube in cryogenic vaporizer, and the heat medium water outside heat exchanger tube is generated steam by thermal evaporation；There are one steam jet ejector, high-temperature evaporator generates steam as driving steam, and for the steam that cryogenic vaporizer generates as sucking steam, the steam that steam jet ejector outlet sprays enters condenser.The condensed water that condenser generates, a part enter cryogenic vaporizer by throttle valve, and another part enters high-temperature evaporator by water pump pressurization；It is heated to heating circulation water the other side of condenser；The steam condensation side lower part of condenser is set there are one vacuum pumping opening.
Description
Technical field
The utility model is related to heat power engineerings, more particularly to a kind of big temperature difference heat-exchanger rig.
Background technology
In recent years, with the continuous development of China's urban construction, the contradiction between regional development and heat demand is also increasingly
It highlights.All city cities area is all constantly expanding, and main city zone scale cell is continuously increased, and old town substantially increases newly every year
The area of area, Xincheng District also constantly expands.From the heat source and heat supply network heat capacity of current city, it much can not meet city
The needs of city's fast development.If heat supply is not caught up with, it will urban development is made to meet with bottleneck.
To solve this contradiction concerning urban development and common people's vital interests, various regions generally start centralized heating project
It builds, increases area of heat-supply service newly, increase construction investment newly.Specifically include newly-built pipe-networks engineering, the old net improvement project in part, newly-built relaying
Pumping plant, the control centres Ji Kong create heat exchange station and heat exchange station improvement project etc..
Heat supply improvement project is divided into heat source side and heat supply network side.
Heat source side generally comprises unit heat supply transformation and heat supply initial station construction project, specially power plant and power ＆ light company are new
Increase networking area of heat-supply service, Xincheng District boiler room heat supply network area of heat-supply service, district heating company heat supply network area of heat-supply service etc..
Heat supply network side is mainly that the pipeline to extend service in the army to old town is replaced, and heat supply pipeline can be controlled effectively after replacing
Evaporating, emitting, dripping or leaking of liquid or gas processed greatly reduces and stops hot number caused by tube leaks, greatly improves heating effect.
Realize that central heating, pipe network have been run 27 years so far in nineteen eighty-three September in certain old town.Through measuring, 1985
10mm when the old pipe network caliber of year installation by installing originally is thinned to 4-6mm, and severe local corrosion, and is passed through in heat supply period
Often there is leakage event.Heating network section of tubing has extended service in the army, and often occurs tube leaks phenomenon during heat supply, causes
Heating quality declines.If without transformation, once occur tube leaks, must stage stop heat, this can make resident living
At prodigious influence.Power ＆ light company's investment is transformed old town heating network, replaces all pipelines being thinned and corrode, changes
About 5 kilometers of range pipe network overall length is made, 570,000 square meter area of heat-supply service are related to, is roughly equal to 5000 family of user, is injected capital into 17,000,000 yuan.Work
After the completion of journey transformation, the stability of the district heating quality and heat supply is greatly improved.By pipe network improving, main city zone heat source fills
Foot, can bear the normal heat supply of resident, retail shop and enterprise.
Most of certain power plant's heat supply main pipeline network construction service life, some was even up to 30 years all at 18 years or more.This portion
It is in charge of net since building time is long, along with construction period technical matters falls behind, until making heat preservation, protective layer serious damage, pipe network
Aging, seriously corroded.In recent years, supervisor's net leakage accident frequently occurred, and each runtime occurs tens times.In every submain
During net repairing, repair personnel all suffers from the threat of 95 DEG C or more high pressures, high-temperature water, and it is small to be all up to more than 30 for repairing sluicing every time
When, cause large area residential building to stop heat, the serious situation of part underground pipe network bursting by freezing.Existing in terms of central heating secondary network
Problem is also more prominent, especially early stage building and pipe abandon arcola room heat supply building grid-connected in recent years, pipe network aging corrosion
As many as the weight of degree, quantity have seriously threatened city heat supply safety and have influenced the normal life of resident.
Certain 666 kilometers of heat supply group heating network length, wherein primary net is 165 kilometers long, secondary network grows 501 kilometers.
About 400 kilometers were built before 1995.Since most of pipeline network construction times are long, aging seriously corroded, cause pipe network system
Evaporating, emitting, dripping or leaking of liquid or gas is extremely serious, and radiation loss reaches 0.35 giggio/square metre year.The average temperature drop of every kilometer of heat distribution pipe network is all 2
DEG C or more, the pipe network system percentage of water loss that is averaged is about 3%.Since fluid loss is big, heat is lost seriously, almost all of primary net,
The hydraulic misadjustment problem of secondary network all various degrees, since pipe network aging is adjusted without forensic science again, heating enterprise
In the heating quality for hankering being difficult to ensure user.
In decades, central heating cause is that the development construction in China city and the raising of living standards of the people are made that weight
Big contribution.Nowadays the central heating network aging of large area, seriously corroded have become the outstanding problem for influencing central heating, sternly
Threaten again city confession is thermally safe and common people's normal life.
It has been to carry out the task of top priority of city heat supply work to implement central heating network transformation.It can be significantly by pipe network improving
The evaporating, emitting, dripping or leaking of liquid or gas of pipe network is reduced, reduction energy consumption is energy saving, improves energy utilization rate；Heat supply can be made to look forward to by pipe network improving
Sparetime university's amount uses of the new technology, new process, improves the science regulating power of heating enterprise, it is horizontal to improve whole heat supply；Pass through pipe network
Transformation can General Promotion heating system safety and heat supply supportability, the use thermal mass of numerous residents is continuously improved, benefits
The common people.It is the act benefited the nation and the people to implement central heating network transformation, early to implement early be benefited.
Implement central heating network improvement project, emphasis is exactly to remove waste and old heat supply pipeline, is laid with the new pipeline of heat supply, this is needed
Put into huge fund.How to accomplish to utilize existing pipeline, or less or thinner pipeline can be laid with, only spends less
Investment, can equally reach the heating load of needsThis is design and construction scientific worker the problem of often thinking deeply.
Utility model content
For creating or old heating network being transformed, solve the problems, such as that the heating load of heating network generally existing is insufficient, this
Utility model provide it is a kind of can reduce heat supply network return water temperature, to increase the big temperature difference heat-exchanger rig of heating network heating load.
A kind of big temperature difference heat-exchanger rig, its structure include：The high-temperature evaporator in left side, the condenser on right side, middle and lower part
Cryogenic vaporizer, valve, water pump and some connecting lines；
Heat supply network high-temperature-hot-water enters after high-temperature evaporator heat release becomes middle warm water, continues heat release into cryogenic vaporizer and becomes
At low-temperature water heating, low-temperature water heating returns to heat supply network water return pipeline；
High-temperature evaporator is a shell and tube exchanger stood up, and high-temperature-hot-water is flowed outside heat exchanger tube, changed from top to bottom
Heat pipe internal heating matchmaker's water evaporation generates steam and is exported from high-temperature evaporator upper steam and flowed out；
Cryogenic vaporizer is a horizontal shell and tube exchanger, and low-temperature water heating flatly flows heat release in heat exchanger tube,
By thermal evaporation, steam flows out heat medium water outside heat exchanger tube from top venthole；
The condensed water that condenser generates, a part enter cryogenic vaporizer by throttle valve, and another part is added by water pump
It is pressed into high-temperature evaporator；It is heated to heating circulation water the other side of condenser；The steam condensation side lower part of condenser is equipped with one
A vacuum pumping opening.
The big temperature difference heat-exchanger rig, its structure further include a steam jet ejector, and high-temperature evaporator generates steam and makees
To drive steam, into steam jet ejector, the steam that cryogenic vaporizer generates enters the suction chamber of steam jet ejector, steam injection
The steam that device outlet sprays enters condenser.
Description of the drawings
Fig. 1 is the overall pattern of the big temperature difference heat-exchanger rig embodiment of the utility model.
Specific implementation mode
With reference to the accompanying drawings and examples, the utility model is described in further detail.
Fig. 1 gives the overall pattern of the big temperature difference heat-exchanger rig embodiment of the utility model.
The overall structure of the big temperature difference heat-exchanger rig embodiment of the utility model, its construction include：High-temperature evaporator 100,
Cryogenic vaporizer 400, condenser 300, steam jet ejector 200, several valves, water pump and some connecting lines.In shape, from
It is left-to-right to be divided into four bulks：1, vertical high-temperature evaporator 100；2, horizontal cryogenic vaporizer 400；3, vertical condenser
300,4, steam jet ejector 200, between high-temperature evaporator 100, cryogenic vaporizer 400 and condenser 300, level is set for it
It sets.
Its workflow is
1, the high-temperature-hot-water of waterpipe is carried out from heating network, is flowed into from heat supply network water inlet 101, into high-temperature evaporator
100；
2, high-temperature evaporator 100 is a shell and tube exchanger, high-temperature-hot-water in the shell of high-temperature evaporator 100, by
Top to bottm flows outside heat exchanger tube, heating agent water evaporation in heat exchanger tube, generates steam from 100 upper steam outlet stream of high-temperature evaporator
Go out, as driving steam, into steam jet ejector 200；
3, high-temperature-hot-water after flowing heat release from top to bottom, becomes low-temperature water heating, from height in 100 shell of high-temperature evaporator
The lower part of the housing side exit outflow of warm evaporator 100, into cryogenic vaporizer 400；
4, cryogenic vaporizer 400 is a shell and tube exchanger, and low-temperature water heating flows in the heat exchanger tube of cryogenic vaporizer 400
Dynamic heat release, delivers heat to the heat medium water outside heat exchanger tube, after the low-temperature water heating heat release in heat exchanger tube, by outlet pipe, water outlet 401,
Return to the water return pipeline of heating network；
5,100 upper steam of high-temperature evaporator outlet outflow high-temperature steam, as driving steam, into steam jet ejector
200, it is sprayed by nozzle, low-voltage space is generated in steam jet ejector 200, to outside 400 heat exchanger tube of injection cryogenic vaporizer
The steam that generates of heating agent water evaporation finally drive steam and jetting steam caused mixing, and enter the steam of condenser 300 together
Condense side；
6, the condensed water that condenser 300 generates a, part enters cryogenic vaporizer 400 by throttle valve 401, supplements low temperature
400 evaporation loss of evaporator, another part enter high-temperature evaporator 100 by water pump 102, and supplement high-temperature evaporator 100 evaporates
Loss；
7, the other side of condenser 300 is heated to heating circulation water, and heating water return enters from water return outlet 302, after heating,
It is flowed out from heating water outlet 301, for heating to heat user；
8, it sets on the steam condensation side lower part side wall of condenser 300 there are one vacuum pumping opening 303, utilizes aspiration pump, take out
Go out the on-condensible gases such as air remaining in steam condensation side, maintains the vacuum degree of whole device.
Claims (1)
1. a kind of big temperature difference heat-exchanger rig, its structure include：The high-temperature evaporator in left side, the condenser on right side, middle and lower part
Cryogenic vaporizer, valve, water pump and some connecting lines；Heat supply network high-temperature-hot-water enters high-temperature evaporator heat release and becomes middle warm water
Afterwards, continue heat release into cryogenic vaporizer and become low-temperature water heating, low-temperature water heating returns to heat supply network water return pipeline；High-temperature evaporator is one
A shell and tube exchanger stood up, high-temperature-hot-water flow outside heat exchanger tube from top to bottom, heating agent water evaporation in heat exchanger tube, generate steaming
Vapour is exported from high-temperature evaporator upper steam to flow out；Cryogenic vaporizer is a horizontal shell and tube exchanger, and low-temperature water heating exists
Heat release is flatly flowed in heat exchanger tube, the heat medium water outside heat exchanger tube is flowed out by thermal evaporation, steam from top venthole；Condenser produces
Raw condensed water, a part enter cryogenic vaporizer by throttle valve, and another part enters high-temperature evaporator by water pump pressurization；
It is heated to heating circulation water the other side of condenser；The steam condensation side lower part of condenser is set there are one vacuum pumping opening, special
Sign is：The big temperature difference heat-exchanger rig, its structure further include a steam jet ejector, and high-temperature evaporator generates steam conduct
Steam is driven, into steam jet ejector, the steam that cryogenic vaporizer generates enters the suction chamber of steam jet ejector, steam jet ejector
The steam that outlet sprays enters condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721706779.4U CN207990747U (en) | 2017-12-02 | 2017-12-02 | Big temperature difference heat-exchanger rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721706779.4U CN207990747U (en) | 2017-12-02 | 2017-12-02 | Big temperature difference heat-exchanger rig |
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| Publication Number | Publication Date |
|---|---|
| CN207990747U true CN207990747U (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721706779.4U Active CN207990747U (en) | 2017-12-02 | 2017-12-02 | Big temperature difference heat-exchanger rig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869788A (en) * | 2017-12-02 | 2019-06-11 | 哈尔滨工大金涛科技股份有限公司 | Big temperature difference heat-exchanger rig |
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2017
- 2017-12-02 CN CN201721706779.4U patent/CN207990747U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869788A (en) * | 2017-12-02 | 2019-06-11 | 哈尔滨工大金涛科技股份有限公司 | Big temperature difference heat-exchanger rig |
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