CN203796527U - Direct air cooling unit evacuation pipeline cooling system with absorption heat pump - Google Patents
Direct air cooling unit evacuation pipeline cooling system with absorption heat pump Download PDFInfo
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- CN203796527U CN203796527U CN201420211666.7U CN201420211666U CN203796527U CN 203796527 U CN203796527 U CN 203796527U CN 201420211666 U CN201420211666 U CN 201420211666U CN 203796527 U CN203796527 U CN 203796527U
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- cooler
- hand operated
- operated door
- pipeline
- heat pump
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Abstract
The utility model discloses a direct air cooling unit evacuation pipeline cooling system with an absorption heat pump. The system comprises an air cooling island, a heat pump, a vacuum pump set, and a steam cooler. The air cooling island is connected with the heat pump through a heat pump heating butterfly valve. The air cooling island is connected with the vacuum pump set through a first pipeline. The air cooling island is connected with the steam cooler through a second pipeline. The steam cooler is connected with the vacuum pump set through a third pipeline. The problem about equipment safety of the vacuum pumps operating under high backpressure is solved effectively.
Description
Technical field
The utility model relates to power domain, relates in particular to a kind of Direct Air-cooled Unit vacuum-pumping tube line cooling system with absorption heat pump.
Background technique
In recent years, the exhaust steam recovery and utilization technology of Direct Air-cooled Unit is widely used.Between heating period, improving unit back pressure can provide more more high-quality thermals source for the hot user of terminal, has significantly improved the cogeneration of heat and power Economy of unit in the winter time.In current heat supply unit design, generally adopt the unit molding formula of a heat pump of a unit band, the pumped vacuum systems parallel running of the pumped vacuum systems of steam turbine and heat pump, leans on the running of vacuum pump to maintain the required vacuum of system.
Because the blank degree of unit is different, adding steam turbine and heat pump vacuum-pumping pipeline characteristic mates bad, cause unit in the winter time externally during heat supply, a large amount of steam in heat pump are directly extracted out by vacuum pump, not only increased the working load of vacuum pump, and the working medium temperature in vacuum pump is significantly raise, increased the weight of the level of cavitation of vacuum pump, the Security of serious threat equipment.
Model utility content
The utility model provides a kind of Direct Air-cooled Unit vacuum-pumping tube line cooling system with absorption heat pump, efficiently solves the device security problem that vacuum pump moves under high back pressure.
The utility model embodiment adopts following technological scheme:
A Direct Air-cooled Unit vacuum-pumping tube line cooling system with absorption heat pump, comprising: Air-Cooling Island, heat pump, vacuum pump group, steam cooler; Described Air-Cooling Island connects described heat pump by heat pump heat supply butterfly valve; Described Air-Cooling Island connects described vacuum pump group by pipeline; Described Air-Cooling Island connects described steam cooler by pipeline; Described steam cooler connects described vacuum pump group by pipeline.
Optionally, also comprise: cooler bypass hand operated door, described cooler bypass hand operated door is arranged on the pipeline between described Air-Cooling Island and described vacuum pump group.
Optionally, also comprise: cooler outlet hand operated door, described cooler outlet hand operated door is arranged on the pipeline between described steam cooler and described vacuum pump group.
Optionally, also comprise: cooler entrance, described cooler entrance hand operated door is arranged on the pipeline between described Air-Cooling Island and described steam cooler
Optionally, also comprise: circulating water entrance hand operated door, described steam cooler connects described circulating water entrance hand operated door.
Optionally, also comprise: described circulating water outlet hand operated door, steam cooler connects described circulating water outlet hand operated door.
Based on technique scheme, Air-Cooling Island connects heat pump by heat pump heat supply butterfly valve, and Air-Cooling Island connects vacuum pump group by pipeline, and Air-Cooling Island connects steam cooler by pipeline, and steam cooler connects vacuum pump group by pipeline.Thereby efficiently solve the device security problem that vacuum pump moves under high back pressure.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of Direct Air-cooled Unit vacuum-pumping tube line cooling system with absorption heat pump that Fig. 1 provides for the utility model embodiment.
Embodiment
For making the utility model embodiment's object, technological scheme and advantage clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of Direct Air-cooled Unit vacuum-pumping tube line cooling system with absorption heat pump, comprise steam cooler, cooler bypass hand operated door, steam inlet hand operated door, hydrophobic hand operated door, vacuumize hand operated door, circulating water entrance hand operated door, circulating water outlet hand operated door and relevant pipeline, this kind of cooling system adopts that outer for circulating water, steam to be carried out to surface-type cooling.When unit heat supply in winter or the operation of unit high back pressure, drop into this cooling system, open the entry and exit hand operated door of cooler circulating water, then the hydrophobic hand operated door of crack cooler, system is vacuumized, after vacuum is set up completely, then open cooler entry and exit hand operated door completely, after cooler is working properly, close gradually cooler bypass hand operated door.On steam cooler, be provided with water-level gauge on the spot, observe at any time in cooler whether having water, whether working properly to judge cooler.At cooler, there is fault, need to overhaul time, can utilize above-mentioned valve fully to isolate, it is overhauled.In the fully cooling vapour gas mixture of cooling system, water vapor portion is very little, and the air in mixture is likely cooling by transition, far below the saturation temperature under exhaust steam pressure, after vacuum pump is pressurized discharged to atmosphere.This kind of cooling system do not having in out of order situation and can put into operation for a long time, under high back pressure, high exhaust temperature, through the abundant cooling incondensable gas of supercooler, can farthest reduce vacuum pump load, reduce the level of cavitation of vacuum pump impeller, extend the service life of vacuum pump.
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, a kind of Direct Air-cooled Unit vacuum-pumping tube line cooling system with absorption heat pump of the utility model embodiment, comprises steam cooler 4, cooler bypass hand operated door 11, cooler entrance hand operated door 8, cooler outlet hand operated door 12, hydrophobic hand operated door 13, circulating water entrance hand operated door 9, circulating water outlet hand operated door 10 and relevant pipeline.Cooler is first opened circulating water entrance hand operated door 9 and outlet hand operated door 10 before putting into operation, slowly open the hydrophobic hand operated door 13 of cooler, cooler inside and pipeline are vacuumized, after setting up completely, vacuum opens again cooler outlet hand operated door 12 and cooler entrance hand operated door 9, close subsequently cooler bypass hand operated door 11, intrasystem incondensable gas is drained in atmosphere after vacuum pump group 5 is extracted out, and what in cooler, condense hydrophobicly drains into steam exhaust device 1 via hydrophobic hand operated door.
Unit is when normal operation, a turbine discharge part from steam exhaust device 1 directly drains into Air-Cooling Island 3, after air cooling condenser condenses, incondensable gas and part steam are directly extracted out by vacuum-pumping tube route vacuum pump group 5, another part enters heat pump 2 through heat pump heat supply butterfly valve 6, after Heating Cyclic water, incondensable gas and part steam vacuumize door 7 through heat pump and extract out and drain into atmosphere via vacuum pump group 5.When unit heats in the winter time, for obtaining good Economy, generally adopt the method for operation of high back pressure, make unit exhaust temperature near 70 degrees Celsius, the vapor phase that vacuum pump extracts, to more, causes vacuum pump circulatory mediator temperature to raise, and the level of cavitation of pump impeller blade is increased the weight of.Also have, when unit moved under high temperature condition in summer, because of the limited band of back pressure not at full capacity, also exist vacuum pump find time to load too high, operation medium temperature is high, the phenomenon of pump impeller serious cavitation erosion.Therefore, in unit vacuum-pumping pipeline, increase the level of cavitation that cooling system can greatly reduce exerting oneself of vacuum pump and pump impeller, extension device working life.
This system is in normal course of operation, if there is extremely, in the time of can not maintaining as faults such as cooler water side leakage water, vapour side leakage vacuum, can open cooler bypass door 11, then close cooler entrance hand operated door 8, cooler outlet hand operated door 12, cooler vapour side is isolated completely, can not affect the operation of unit.According to fault type, can close if desired circulating water entrance door 9, circulating water outlet door 10 and cooler draining valve 13 subsequently, system is isolated completely.
The utlity model has the feature that one-time investment is little, utilization ratio is high, reliability is high, effectively guaranteed the security of operation of vacuum pump.
These are only a kind of preferably embodiment of the utility model, but the protection domain of this patent is not limited to this, in relevant technical scope, the variation that can expect easily or replacement, within all should being encompassed in the protection domain of this patent.Therefore, the protection domain of this patent should be as the criterion with the protection domain of claim.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technological scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present utility model.
Claims (6)
1. with a Direct Air-cooled Unit vacuum-pumping tube line cooling system for absorption heat pump, it is characterized in that, comprising: Air-Cooling Island, heat pump, vacuum pump group, steam cooler; Described Air-Cooling Island connects described heat pump by heat pump heat supply butterfly valve; Described Air-Cooling Island connects described vacuum pump group by pipeline; Described Air-Cooling Island connects described steam cooler by pipeline; Described steam cooler connects described vacuum pump group by pipeline.
2. system according to claim 1, is characterized in that, also comprises: cooler bypass hand operated door, described cooler bypass hand operated door is arranged on the pipeline between described Air-Cooling Island and described vacuum pump group.
3. system according to claim 1, is characterized in that, also comprises: cooler outlet hand operated door, described cooler outlet hand operated door is arranged on the pipeline between described steam cooler and described vacuum pump group.
4. system according to claim 1, is characterized in that, also comprises: cooler entrance hand operated door, described cooler entrance hand operated door is arranged on the pipeline between described Air-Cooling Island and described steam cooler.
5. system according to claim 1, is characterized in that, also comprises: circulating water entrance hand operated door, described steam cooler connects described circulating water entrance hand operated door.
6. system according to claim 1, is characterized in that, also comprises: circulating water outlet hand operated door, steam cooler connects described circulating water outlet hand operated door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211666.7U CN203796527U (en) | 2014-04-28 | 2014-04-28 | Direct air cooling unit evacuation pipeline cooling system with absorption heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211666.7U CN203796527U (en) | 2014-04-28 | 2014-04-28 | Direct air cooling unit evacuation pipeline cooling system with absorption heat pump |
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| Publication Number | Publication Date |
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| CN203796527U true CN203796527U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420211666.7U Active CN203796527U (en) | 2014-04-28 | 2014-04-28 | Direct air cooling unit evacuation pipeline cooling system with absorption heat pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705697A (en) * | 2017-02-15 | 2017-05-24 | 北京中电云汇技术有限公司 | Cooling compensation type air cooling island system |
| CN107062928A (en) * | 2017-02-15 | 2017-08-18 | 北京中电云汇技术有限公司 | One kind vacuumizes compensation Air-Cooling Island system |
-
2014
- 2014-04-28 CN CN201420211666.7U patent/CN203796527U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106705697A (en) * | 2017-02-15 | 2017-05-24 | 北京中电云汇技术有限公司 | Cooling compensation type air cooling island system |
| CN107062928A (en) * | 2017-02-15 | 2017-08-18 | 北京中电云汇技术有限公司 | One kind vacuumizes compensation Air-Cooling Island system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |