CN202902996U - Flash evaporation energy-saving draining system of steam thermodynamic system heat exchanger - Google Patents
Flash evaporation energy-saving draining system of steam thermodynamic system heat exchanger Download PDFInfo
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- CN202902996U CN202902996U CN 201220650193 CN201220650193U CN202902996U CN 202902996 U CN202902996 U CN 202902996U CN 201220650193 CN201220650193 CN 201220650193 CN 201220650193 U CN201220650193 U CN 201220650193U CN 202902996 U CN202902996 U CN 202902996U
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- heat exchanger
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- drain valve
- flash evaporation
- condensation water
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Abstract
The utility model discloses a flash evaporation energy-saving draining system of a steam thermodynamic system heat exchanger, which belongs to the field of energy saving. The system is characterized by comprising a heat exchanger, a steam pipeline, an air emptying valve, a vacuum breaking device, drain valves, a condensation water collecting pipeline, a flash evaporation tank, a flash evaporation drain valve, a flash evaporation reflux drain valve and a condensation water return pipe; the heat exchanger comprises a plurality of parallel heat exchange units, a steam inlet of each heat exchange unit is connected with the steam pipeline, a condensation water outlet of each heat exchange unit is connected with the condensation water collecting pipeline through the drain valve; the condensation water collecting pipeline is connected with a water inlet of the flash evaporation tank, a steam outlet of the flash evaporation tank is connected with a steam inlet of the heat exchanger, an outlet for condensation water which is subjected to heat exchange through the heat exchanger is connected to the condensation water return pipe through the flash evaporation reflux drain valve; the condensation water outlet of the flash evaporation tank is connected with the condensation water return pipe through the flash evaporation drain valve; and the steam pipeline is respectively connected with the air empty valve and the vacuum breaking device. Compared with the prior art, the system has the characteristics of efficiency and energy saving.
Description
Technical field
The utility model relates to a kind of heat exchanger draining system, a kind of steam thermal system that is applicable to particularly, the heat exchanger energy saving drainage system with flash distillation utilization, energy recovery.
Background technology
Steam is as top quality secondary energy sources, is widely used in oil, petrochemical industry, chemical industry, papermaking, brewages, the field such as tobacco, iron and steel, medicine, packing, machinery, electronics.
The high pressure heat exchanger steam pressure of present existing steam thermal system heat exchanger condensate water draining system is 2.5MPa, and the condensate water overbottom pressure is naturally the highest after heat exchange; Middle pressure heat exchanger steam pressure is 1.0MPa, and the condensate water overbottom pressure is medium after heat exchange; The low pressure heat exchanger is with steam pressure 0.3MPa only, and the condensate water overbottom pressure is naturally minimum after heat exchange.Its result be exactly in the condensate water pipe network condensate water from low pressure toward the high pressure reverse flow, cause condensate water pipe network back pressure high, build the pressure seriously, cause condensate drain not smooth, and then affect heat exchanger efficiency and production efficiency.Especially low pressure heat exchanger and jacket heat-exchanger internal water accumulation are serious.Produce for guaranteeing, have to be by driving by-passing valve, the carbonated drink mixing, and then cause live steam to leak energy waste.Steam leakage has further increased the back pressure of drain valve, finally causes the equal carbonated drink mixing of all by-passing valves in parallel with drain valve, a large amount of steam leakages, and the steam efficiency reduces, the per unit area yield steam consumption increases severely.
In addition, usually adhere to a layer of air and water membrane in the present heat exchanger, greatly reduce overall heat-transfer coefficient.The formation reason of described air film is: the service intermittent heat exchanger after stopping steam supply, steam-condensation, volume-diminished is more than 1500 times, forms vacuum, air is inhaled into heat exchanger through steam trap.Air film is perfect thermal isolation film, and the existence of 0.5% air can reduce by 50% heat exchange efficiency in the heat exchanger.And the source of moisture film has two: the one, and steam moisture is large, water amount is large, quality is low; The 2nd, when the heat exchanger vapor space formed vacuum, with the condensate water suction heat exchanger of condensate water pipe network or water collect tank, when heat exchanger restarted, the drain valve discharge capacity was inadequate, caused heat exchanger ponding.And, as long as air problem and moisture film problem, then H are arranged
2O, CO
2, O
2There is simultaneously CO
2And O
2Water-soluble formation time carbonic acid, the corrosion of aggravation heat exchanger surface; Produce vacuum breaking when forming vacuum, and cause stress corrosion, and stress corrosion meeting aggravation electrochemical corrosion.
The utility model content
Technical assignment of the present utility model is for above the deficiencies in the prior art, provides a kind of energy-efficient steam thermal system heat exchanger flash distillation to utilize energy saving drainage system.
The technical scheme in the invention for solving the technical problem is: the flash distillation of a kind of steam thermal system heat exchanger utilizes energy saving drainage system, it is characterized in that: comprise heat exchanger, steam pipework, emptying valve, vacuum breaking device, drain valve, condensate water catchment pipeline, flash tank, flash distillation drain valve, flash distillation backflow drain valve, condensate return pipe; Described heat exchanger contains the heat exchange unit of a plurality of parallel connections, and each heat exchange unit steam inlet connects steam pipework, and the heat exchange unit condensation-water drain is connected to the condensate water pipeline that catchments by drain valve; The condensate water pipeline that catchments connects the flash tank water inlet, and the flash tank steam (vapor) outlet connects heat exchanger flash steam entrance, is connected to condensate return pipe through heat exchanger heat exchange condensation-water drain by flash distillation backflow drain valve; The flash tank condensation-water drain is connected to condensate return pipe by the flash distillation drain valve; Described steam pipework is connected with respectively emptying valve and vacuum breaking device.
On the above-mentioned steam pipework pressure-reducing station is arranged.
Compared with prior art, the utlity model has following outstanding beneficial effect:
1, the utility model by catchment, the condensate water overbottom pressure of the constitutional balance different brackets such as flash distillation, draining system is reasonable in design, has effectively contained steam leakage, has improved usefulness, overall heat-transfer coefficient is than increasing more than 10 times;
2, by vacuum abolish, deaeration when starting, prevented the impact of residual air heat exchanging efficient;
3, the draining system of correct design has ensured steam quality, effectively reduces the impact of moisture film heat exchanger heat exchange efficiency;
4, by to air problem and moisture film solution of problem, prevented the stress corrosion that chemical attack and vacuum cause, perfect equipment is saved from damage;
5, condensation water residual heat meets energy-conservation requirement by the flash distillation utilization.
Description of drawings
Fig. 1 is present existing heat exchanger draining system structural representation.
Fig. 2 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with specification drawings and specific embodiments the utility model is further specified.
As shown in Figure 1, present existing heat exchanger draining system structure just has the pressure loss because fluid has to flow, and along the vapor flow direction, steam pressure successively decreases gradually.Correspondingly, steam pressure is high, and back pressure is also high.In this kind design, the condensate water flow direction is the pressure reverse flow, and condensate water pipe network back pressure is high, it is serious to build the pressure, and causes condensate drain not smooth, and low-pressure section heat exchanger ponding is the most serious.
As shown in Figure 2, the utility model comprises heat exchanger 1, steam pipework 2, emptying valve 3, vacuum breaking device 4, pressure-reducing station 5, drain valve 6, condensate water catchment pipeline 7, flash tank 8, flash distillation drain valve 9, flash distillation backflow drain valve 10, condensate return pipe 11.
Described heat exchanger 1 contains the heat exchange unit of a plurality of parallel connections, and each heat exchange unit steam inlet connects steam pipework 2, and the heat exchange unit condensation-water drain is connected to the condensate water pipeline 7 that catchments by drain valve 6; Catchment pipeline 7 of condensate water connects flash tanks 8 water inlets, and flash tank 8 steam (vapor) outlets connect heat exchanger 1 flash steam entrance, are connected to condensate return pipe 11 through heat exchanger 1 heat exchange condensation-water drain by flash distillation backflow drain valve 10.Flash tank 8 condensation-water drains are connected to condensate return pipe 11 by flash distillation drain valve 9.
Described steam pipework 2 is connected with respectively emptying valve 3 and vacuum breaking device 4.
On the described steam pipework 2 pressure-reducing station 5 is arranged, be used for carrying out carbonated drink separation.
Need to prove; particular of the present utility model is described in detail the utility model; for a person skilled in the art, in the various apparent change of in the situation that does not deviate from spirit and scope of the present utility model it being carried out all within protection domain of the present utility model.
Claims (2)
1. steam thermal system heat exchanger flash distillation utilizes energy saving drainage system, it is characterized in that: comprise heat exchanger, steam pipework, emptying valve, vacuum breaking device, drain valve, condensate water catchment pipeline, flash tank, flash distillation drain valve, flash distillation backflow drain valve, condensate return pipe; Described heat exchanger contains the heat exchange unit of a plurality of parallel connections, and each heat exchange unit steam inlet connects steam pipework, and the heat exchange unit condensation-water drain is connected to the condensate water pipeline that catchments by drain valve; The condensate water pipeline that catchments connects the flash tank water inlet, and the flash tank steam (vapor) outlet connects heat exchanger flash steam entrance, is connected to condensate return pipe through heat exchanger heat exchange condensation-water drain by flash distillation backflow drain valve; The flash tank condensation-water drain is connected to condensate return pipe by the flash distillation drain valve; Described steam pipework is connected with respectively emptying valve and vacuum breaking device.
2. steam thermal system heat exchanger according to claim 1 flash distillation utilizes energy saving drainage system, it is characterized in that: on the described steam pipework pressure-reducing station is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650193 CN202902996U (en) | 2012-12-02 | 2012-12-02 | Flash evaporation energy-saving draining system of steam thermodynamic system heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220650193 CN202902996U (en) | 2012-12-02 | 2012-12-02 | Flash evaporation energy-saving draining system of steam thermodynamic system heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202902996U true CN202902996U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220650193 Expired - Fee Related CN202902996U (en) | 2012-12-02 | 2012-12-02 | Flash evaporation energy-saving draining system of steam thermodynamic system heat exchanger |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917372A (en) * | 2018-05-21 | 2018-11-30 | 亚太森博（山东）浆纸有限公司 | A kind of flash vapor system |
| CN110440447A (en) * | 2018-05-03 | 2019-11-12 | 孚雷德（北京）蒸汽节能技术有限公司 | A kind of air heater energy efficiency equipment |
| CN111895381A (en) * | 2020-07-31 | 2020-11-06 | 中国科学院广州能源研究所 | A flash steam recompression resource utilization device |
| CN114279202A (en) * | 2021-12-15 | 2022-04-05 | 河北白沙烟草有限责任公司保定卷烟厂 | Device for improving steam dryness |
-
2012
- 2012-12-02 CN CN 201220650193 patent/CN202902996U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440447A (en) * | 2018-05-03 | 2019-11-12 | 孚雷德（北京）蒸汽节能技术有限公司 | A kind of air heater energy efficiency equipment |
| CN108917372A (en) * | 2018-05-21 | 2018-11-30 | 亚太森博（山东）浆纸有限公司 | A kind of flash vapor system |
| CN111895381A (en) * | 2020-07-31 | 2020-11-06 | 中国科学院广州能源研究所 | A flash steam recompression resource utilization device |
| CN111895381B (en) * | 2020-07-31 | 2025-07-11 | 中国科学院广州能源研究所 | A flash steam recompression resource utilization device |
| CN114279202A (en) * | 2021-12-15 | 2022-04-05 | 河北白沙烟草有限责任公司保定卷烟厂 | Device for improving steam dryness |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20151202 |
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| EXPY | Termination of patent right or utility model |