CN204267115U - A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat - Google Patents
A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat Download PDFInfo
- Publication number
- CN204267115U CN204267115U CN201420721671.2U CN201420721671U CN204267115U CN 204267115 U CN204267115 U CN 204267115U CN 201420721671 U CN201420721671 U CN 201420721671U CN 204267115 U CN204267115 U CN 204267115U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- air
- water
- cooled unit
- heat
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat that the energy recovery belonging to heating water steam circulation system utilizes technical field.Its structure is: one end of air cooling heat recovery heat exchanger is connected with flowmeter, the other end divides two-way, one tunnel is connected with tubular heat exchanger, backwater bypass duct of leading up to is connected with variable frequency pump, variable frequency pump is connected with flowmeter, one end of tubular heat exchanger is connected with variable frequency pump, the entry end of tubular heat exchanger carrys out water lines with former water and is connected, outlet end is connected with former water water return pipeline, the entry end of air cooling heat recovery heat exchanger carrys out waterpipe with the bypass of Air-cooled Unit outlet pipe and is connected, and outlet end is connected with Air-cooled Unit outlet pipe bypass water return pipeline.The utility model adopts and reclaims Air-cooled Unit exhaust heat, reduces steam turbine auxiliary steam simultaneously and consumes, directly can improve unit economy.
Description
Technical field
The energy recovery that the utility model belongs to heating water steam circulation system utilizes technical field, is specifically related to a kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat.
Background technique
China North China, northwest, northeast wide geographic area are the main places of production of coal, but these regional water shortage have become electric power development and socio-economic development restraining factors.Built a collection of Air-cooled Unit in these rich coal water-deficient areas, compared with wet type cooling unit, Air-cooled Unit due to heat dissipation potential more weak, saturation temperature corresponding to venting gas appliance at about 40 DEG C, far away higher than wet type cooling unit.This part cold source energy accounts for the 60-70% that initial steam absorbs heat, and belong to low temperature exhaust heat, quality is very low, along with national energy-saving consumption reduction requires to improve further, needs to recycle this part waste heat.
Air-cooled Unit Water vapour images supplementing water many employings surface water, former water water temperature affects larger by temperature, particularly in Winter-Spring two season, coolant-temperature gage is low reaches 0-5 DEG C, and reverse osmosis unit is as the important step of water treatment system, water yield temperature influence is comparatively large, and temperature often declines 1 DEG C, and the reverse osmosis produced water yield can decline 3%-5%.In order to make reverse osmosis unit meet design rating at hypothermic phase, guaranteeing device security, economical operation, needing to heat former water, the entering water temp of reverse osmosis unit is controlled at 20-30 DEG C.
Power plant applies more former water heater and adopts direct contact heat exchanger form, heating steam is directly added to the water, and this heat exchanger steam utilization very, heat exchanger volume is little, applies more.And the heating steam that this heater adopts is from the steam of main building Auxiliary Steam, when unit normally runs, the vapour source of main building Auxiliary Steam is four sections and draws gas.
Former water heater adopt the steam of main building Auxiliary Steam as adding hot vapour source, directly expend power plant thermal system steam, thus have influence on unit operation Economy.And adopt more hybrid former water heater at present, because heating steam directly enters heater body low temperature water, more make vehicle repair major directly contact, cause that water attack is serious, vibration is large, noise is large, vapour even occurs and hits all faults, visible, there is shortcomings in original former water heater.
Model utility content
The utility model, for the defect of prior art, proposes a kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat.The back pressure of Air-cooled Unit venting gas appliance is higher, generally at more than 8KPa during winter, corresponding saturation temperature at about 40 DEG C, according to former coolant-temperature gage 0-5 DEG C, water-exit temperature requires 20-30 DEG C, utilizes Air-cooled Unit gas turbine exhaust gas waste heat to be feasible as former water heater thermal source.Air-cooled Unit gas turbine exhaust gas waste heat is utilized while directly reducing unit cold source energy, also reduces the use of steam turbine auxiliary steam, make the utility model have certain contribution for raising unit economy.Adopt hybrid-type hot water heating mode, avoid former water heater steam-water twin phases and directly impact, make this technology have good security and stability.
A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat, one end of air cooling heat recovery heat exchanger 1 is connected with flowmeter 2, the other end divides two-way, one tunnel is connected with tubular heat exchanger 3, backwater bypass duct 4 of leading up to is connected with variable frequency pump 5, variable frequency pump 5 is connected with flowmeter 2, one end of tubular heat exchanger 3 is connected with variable frequency pump 5, entry end and the former water of tubular heat exchanger 3 carry out water lines 6 and are connected, outlet end is connected with former water water return pipeline 7, the entry end of air cooling heat recovery heat exchanger 1 carrys out waterpipe 8 with the bypass of Air-cooled Unit outlet pipe and is connected, outlet end is connected with Air-cooled Unit outlet pipe bypass water return pipeline 9.
Described air cooling heat recovery heat exchanger 1 is finned heat exchanger 1.
The beneficial effects of the utility model: the utility model adopts and reclaims Air-cooled Unit exhaust heat, reduce steam turbine auxiliary steam to consume simultaneously, directly can improve unit economy, estimate to save mark about 0.2 ten thousand tons, coal year, improve efficiency, decrease the discharge of pollutant.Improve raw water heater heat form, adopt hot water and cold water mix to heat, avoid steam and the direct Hybrid Heating of water, elimination steady-state vibrations, noise, water attack, vapour hit phenomenon, improve heater safety operation level.
Accompanying drawing explanation
Fig. 1 is the utility model heat reclaiming system structural representation;
In figure, 1-air cooling heat recovery heat exchanger, 2-flowmeter, 3-tubular heat exchanger, 4-backwater bypass duct, 5-variable frequency pump, the former water of 6-carrys out water lines, the former water water return pipeline of 7-, the bypass of 8-Air-cooled Unit outlet pipe carrys out waterpipe, 9-Air-cooled Unit outlet pipe bypass water return pipeline.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Embodiment 1
A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat, as shown in Figure 1, one end of air cooling heat recovery heat exchanger 1 is connected with flowmeter 2, the other end divides two-way, one tunnel is connected with tubular heat exchanger 3, backwater bypass duct 4 of leading up to is connected with variable frequency pump 5, variable frequency pump 5 is connected with flowmeter 2, one end of tubular heat exchanger 3 is connected with variable frequency pump 5, entry end and the former water of tubular heat exchanger 3 carry out water lines 6 and are connected, outlet end is connected with former water water return pipeline 7, the entry end of air cooling heat recovery heat exchanger 1 carrys out waterpipe 8 with the bypass of Air-cooled Unit outlet pipe and is connected, outlet end is connected with Air-cooled Unit outlet pipe bypass water return pipeline 9.Described air cooling heat recovery heat exchanger 1 is finned heat exchanger 1.
The using method of the heat reclaiming system of the present embodiment is: the bypass of Air-cooled Unit outlet pipe carrys out water (hot water) in waterpipe 8 through heat exchange, discharge with the form of cold water from Air-cooled Unit outlet pipe bypass water return pipeline 9, exchange the heat obtained to be absorbed by the circulating water in air cooling heat recovery heat exchanger 1, circulating water one tunnel is through tubular heat exchanger 3, backwater bypass duct 4 of leading up to flows into variable frequency pump 5 and recycles, tubular heat exchanger 3 transfers heat to the former water that former water comes in water lines 6, flow out from former water water return pipeline 7 and use, circulating water (cold water) in tubular heat exchanger 3 flows into variable frequency pump 5 and recycles, circulating water in variable frequency pump 5, enter air cooling heat recovery heat exchanger 1 through flowmeter adjust flux to recycle.
The air cooling device parallel running of tubular heat exchanger and Air-cooled Unit, cooling turbine discharge, the hydrophobic of generation returns condensate system, and increases accident bypass.
Condensed water in high temperature after heating can enter former water-to-water heat exchanger and heat the former water of chemical water, and the steam originally adding the main building Auxiliary Steam of pyrogen water under substituting is bled, and the low-temperature condensate of generation gets back to Air-Cooling Island tubular heat exchanger.
Condensate circulating pump selects two horizontal clean waterpump parallel runnings, adopts the control mode of frequency conversion one drag two.Residual neat recovering system seals between the former water heater import and export of former water heating system, and former water system water, after tubular heat exchanger heating, is got back in former water system.By regulating the motorized adjustment valve opening in parallel with heat recovery heat exchanger, make the cold water before the hot water after heating and heating can bypass, means that can control as former water water-exit temperature, simultaneously, by isolation of system, the impact to main system can be avoided when there is equipment failure.
System adopts the control mode on the spot of PLC, and sends data to central control room, accomplishes long-range monitoring and on-line operation.
Claims (2)
1. one kind utilizes the heat reclaiming system of Air-cooled Unit low-temperature receiver waste heat, it is characterized in that, one end of air cooling heat recovery heat exchanger (1) is connected with flowmeter (2), the other end divides two-way, one tunnel is connected with tubular heat exchanger (3), backwater bypass duct (4) of leading up to is connected with variable frequency pump (5), variable frequency pump (5) is connected with flowmeter (2), one end of tubular heat exchanger (3) is connected with variable frequency pump (5), entry end and the former water of tubular heat exchanger (3) carry out water lines (6) and are connected, outlet end is connected with former water water return pipeline (7), entry end and the bypass of Air-cooled Unit outlet pipe of air cooling heat recovery heat exchanger (1) carry out waterpipe (8) and are connected, outlet end is connected with Air-cooled Unit outlet pipe bypass water return pipeline (9).
2. a kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat according to claim 1, it is characterized in that, described air cooling heat recovery heat exchanger (1) is finned heat exchanger (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420721671.2U CN204267115U (en) | 2014-11-27 | 2014-11-27 | A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420721671.2U CN204267115U (en) | 2014-11-27 | 2014-11-27 | A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267115U true CN204267115U (en) | 2015-04-15 |
Family
ID=52801987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420721671.2U Expired - Fee Related CN204267115U (en) | 2014-11-27 | 2014-11-27 | A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389647A (en) * | 2014-11-27 | 2015-03-04 | 电能（北京）节能技术有限公司 | Heat energy recovery system utilizing cold source afterheat of air cooling unit |
| CN106197065A (en) * | 2016-08-31 | 2016-12-07 | 吉林省电力科学研究院有限公司 | A kind of Direct Air-Cooled tower residual heat using device |
-
2014
- 2014-11-27 CN CN201420721671.2U patent/CN204267115U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389647A (en) * | 2014-11-27 | 2015-03-04 | 电能（北京）节能技术有限公司 | Heat energy recovery system utilizing cold source afterheat of air cooling unit |
| CN106197065A (en) * | 2016-08-31 | 2016-12-07 | 吉林省电力科学研究院有限公司 | A kind of Direct Air-Cooled tower residual heat using device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202581503U (en) | Steam condensate water waste heat recovery device | |
| CN202768090U (en) | Recovery system of dead steam waste heat | |
| CN204646384U (en) | Diesel Engine Coolants and smoke heat energy utilized device | |
| CN202561875U (en) | Waste heat recovery system with bypass for cooling tower of power plant | |
| CN204113364U (en) | The waste heat recovering device of lack of water cold area Direct Air-cooled Unit | |
| CN202348353U (en) | Peak cooling system for power plant cooling island in summer | |
| CN202532586U (en) | System for improving waste heat efficiency of heat pump recovery plant cooling tower | |
| CN203796339U (en) | Waste heat recovery device of direct air cooling unit | |
| CN204267115U (en) | A kind of heat reclaiming system utilizing Air-cooled Unit low-temperature receiver waste heat | |
| CN204612228U (en) | A kind of low temperature heat system | |
| CN203745866U (en) | Thermal power plant circulating water system | |
| CN206054016U (en) | A kind of indirect air cooling unit circulating water exhaust heat recovery device | |
| CN205957277U (en) | Power plant waste heat recovery system | |
| CN205664467U (en) | Directly retrieve economizer that power plant's condenser waste heat is used for municipal heat supply | |
| CN208456680U (en) | Direct Air-cooled Unit feed pump turbine cold end system based on absorption heat pump | |
| CN103032913B (en) | Power plant condensation heat recovery heat supply system taking circular cooling water as heat supply network water | |
| CN206054017U (en) | A kind of Direct Air-cooled Unit exhausted spare heat retracting device | |
| CN206073730U (en) | A kind of cooling system of electric induction furnace | |
| CN202253581U (en) | Energy-saving softened water heating device for thermal power plant | |
| CN104832908A (en) | Combination system and combination method for phase-change heat exchanger with heating network heater | |
| CN205279321U (en) | Full heat energy air conditioning system based on new forms of energy | |
| CN104234763A (en) | Organic Rankine cycle system recovering waste heat through heat pipe technology | |
| CN204268456U (en) | A kind of recovery boiler fume afterheat reutilization system | |
| CN203756246U (en) | Novel auxiliary machine cooling water system used for indirect air cooling unit | |
| CN203478401U (en) | Waste heat supply system of steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20211127 |