阅读说明：本技术 污废水源蒸汽压缩满液式热泵机组 (Sewage and waste water source vapor compression flooded heat pump unit ) 是由 李伟 黄伟成 宋乃秋 李金峰 张勇 尚德敏 于 2020-06-17 设计创作，主要内容包括：一种污废水源蒸汽压缩满液式热泵机组,属于余热利用技术领域。本发明解决了现有的压缩式热泵无法利用工业污废水作为余热热源的问题。所述膨胀阀设置在液态工质进口与冷凝器之间的管路上,所述压缩机设置在气态工质出口与冷凝器之间的管路上,第一换热室内布置有若干第一换热管,若干第一换热管的两端分别与第一换热室外部空间连通,污废水通过污废水进水管连通进入闪蒸室内进行闪蒸,闪蒸后得到的蒸汽向上运动并通过若干第一换热管的一端进入第一换热管内,第一换热管内的蒸汽与第一换热管外的工质进行换热,第一换热管内的蒸汽冷凝成水后,经第一换热管的另一端排出,闪蒸后的污废水通过污废水退水管排出蒸发器。(A vapor compression flooded heat pump unit for a sewage and wastewater source belongs to the technical field of waste heat utilization. The invention solves the problem that the existing compression heat pump can not utilize industrial sewage and wastewater as a waste heat source. The expansion valve is arranged on a pipeline between the liquid working medium inlet and the condenser, the compressor is arranged on a pipeline between the gaseous working medium outlet and the condenser, a plurality of first heat exchange tubes are arranged in the first heat exchange chamber, two ends of the first heat exchange tubes are respectively communicated with the outer space of the first heat exchange chamber, sewage and wastewater enter the flash evaporation chamber through the sewage and wastewater inlet tube for flash evaporation, steam obtained after flash evaporation moves upwards and enters the first heat exchange tubes through one ends of the first heat exchange tubes, the steam in the first heat exchange tubes exchanges heat with the working medium outside the first heat exchange tubes, the steam in the first heat exchange tubes is condensed into water and then is discharged through the other ends of the first heat exchange tubes, and the sewage and wastewater after flash evaporation is discharged out of the evaporator through the sewage and wastewater return tube.)

1. The utility model provides a dirty waste water source vapor compression flooded heat pump set, it includes evaporimeter (1), condenser (2), compressor (3) and expansion valve (4), its characterized in that: the evaporator (1) comprises a first heat exchange chamber (1-1) positioned at the upper part and a flash evaporation chamber (1-2) communicated and arranged below the first heat exchange chamber (1-1), the upper part of the evaporator (1) is communicated with a vacuum pump (1-3), the interior of the evaporator (1) is vacuumized by the vacuum pump (1-3), the lower part of the first heat exchange chamber (1-1) is provided with a liquid working medium inlet (1-1-2), the upper part of the first heat exchange chamber (1-1) is provided with a gaseous working medium outlet (1-1-1), the evaporator (1) is communicated with the condenser (2) through the liquid working medium inlet (1-1-2) and the gaseous working medium outlet (1-1-1), the expansion valve (4) is arranged on a pipeline between the liquid working medium inlet (1-1-2) and the condenser (2), the compressor (3) is arranged on a pipeline between the gaseous working medium outlet (1-1-1) and the condenser (2),

a plurality of first heat exchange tubes (1-1-3) are arranged in the first heat exchange chamber (1-1), two ends of the first heat exchange tubes (1-1-3) are respectively communicated with the outer space of the first heat exchange chamber (1-1), sewage and wastewater are communicated through a sewage and wastewater inlet tube (1-4) and enter the flash evaporation chamber (1-2) for flash evaporation, steam obtained after flash evaporation moves upwards and enters the first heat exchange tubes (1-1-3) through one ends of the first heat exchange tubes (1-1-3), the steam in the first heat exchange tubes (1-1-3) exchanges heat with a working medium outside the first heat exchange tubes (1-1-3), the steam in the first heat exchange tubes (1-1-3) is condensed into water and then is discharged through the other ends of the first heat exchange tubes (1-1-3), the sewage and the wastewater after flash evaporation are discharged out of the evaporator (1) through a sewage and wastewater outlet pipe (1-5).

2. The waste water source vapor compression flooded heat pump unit of claim 1, characterized in that: a demister (1-7) is arranged between the first heat exchange chamber (1-1) and the flash evaporation chamber (1-2).

3. The waste water source vapor compression flooded heat pump unit of claim 1 or 2, characterized in that: a condensate water tank (1-8) is arranged on the outer side of the first heat exchange chamber (1-1), and the condensate water tank (1-8) is communicated with the other ends of the first heat exchange tubes (1-1-3).

4. The waste water source vapor compression flooded heat pump unit of claim 3, characterized in that: a condensate pump (1-9) is arranged outside the evaporator (1), and the condensate pump (1-9) is communicated with a condensate tank (1-8).

5. The waste water source vapor compression flooded heat pump unit of claim 1, 2 or 4, characterized in that: the sewage and wastewater return pipe (1-5) is horizontally arranged at the lower part or the bottom of the flash chamber (1-2).

6. The waste water source vapor compression flooded heat pump unit of claim 5, characterized in that: the sewage and wastewater inlet pipe (1-4) is horizontally arranged and communicated with the upper side wall of the flash chamber (1-2).

7. The waste water source vapor compression flooded heat pump unit of claim 5, characterized in that: the sewage and wastewater inlet pipe (1-4) is vertically arranged, and the bottom end of the sewage and wastewater inlet pipe is positioned in the flash chamber (1-2).

8. The waste water source vapor compression flooded heat pump unit of claim 7, characterized in that: the number of the first heat exchange chambers (1-1) is two, the first heat exchange chambers are oppositely arranged at two sides of the sewage and wastewater inlet pipe (1-4), and flash steam enters the first heat exchange pipes (1-1-3) through the opposite sides of the two first heat exchange chambers (1-1) for heat exchange.

9. The waste water source vapor compression flooded heat pump unit of claim 1, 2, 4, 6, 7 or 8, characterized in that: the condenser (2) comprises a second heat exchange chamber (2-1), a liquid to be heated inlet chamber (2-2) and a liquid to be heated outlet chamber (2-3) which are positioned at two ends of the second heat exchange chamber (2-1), wherein, a plurality of second heat exchange tubes (2-1-1) are arranged in the second heat exchange chamber (2-1), the liquid to be heated enters the chamber (2-2) and flows out of the chamber (2-3) through the plurality of second heat exchange tubes (2-1-1) for communicating arrangement, the upper part of the second heat exchange chamber (2-1) is communicated with a gaseous working medium outlet (1-1-1) in the evaporator (1) through a pipeline, and the lower part of the second heat exchange chamber (2-1) is communicated with a liquid working medium inlet (1-1-2) in the evaporator (1) through a pipeline.

Technical Field

The invention relates to a waste water source vapor compression flooded heat pump unit, and belongs to the technical field of waste heat utilization.

Background

The compression heat pump is a mechanical device which forces heat to flow from a low-temperature object to a high-temperature object in a reverse circulation mode, can obtain larger heat supply amount only by consuming a small amount of reverse circulation net work, and can effectively utilize low-grade heat energy which is difficult to apply to achieve the aim of saving energy.

A large amount of low-grade waste heat in municipal sewage, industrial wastewater or circulating water can be used as a heat source of the heat pump, but the part of sewage contains a large amount of suspended matters or soluble solids, and if the sewage directly enters the heat pump unit, the problems of blockage, scaling, corrosion and the like of a heat exchange pipe are easy to occur, so that the heat pump unit cannot normally operate or even is damaged; at present, when a water source containing suspended matters and easily depositing large solid quantity like municipal sewage is used as a heat source, the common solution is to utilize a special heat exchanger with strong anti-blocking capacity or to realize the utilization of sewage source heat by filtering the suspended matters, but when a large amount of dissolved solids exist in the sewage and the sewage, no matter which mode is used, a large amount of dissolved solids can be separated out when the sewage is cooled in heat exchange, and the dissolved solids are attached to the heat exchange wall surface, so that the heat exchange wall surface is scaled, blocked or corroded, and the stable recovery of heat can not be realized.

For example, in the production process of the industries such as metallurgy, coal chemical industry, salt chemical industry and the like, a large amount of medium-low temperature process circulating cooling water or process wastewater contains a large amount of waste heat, most of the process circulating cooling water or process wastewater in the industry is sewage wastewater which is corrosive, easy to deposit and easy to scale, and the waste water cannot be subjected to waste heat energy recovery to cause a large amount of waste heat in the industry.

Disclosure of Invention

The invention aims to solve the problem that the existing compression heat pump cannot utilize industrial sewage and wastewater as a waste heat source, and further provides a sewage and wastewater source vapor compression flooded heat pump unit.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a vapor compression flooded heat pump unit of a sewage and wastewater source comprises an evaporator, a condenser, a compressor and an expansion valve,

the evaporator comprises a first heat exchange chamber positioned at the upper part and a flash evaporation chamber communicated and arranged below the first heat exchange chamber, the upper part of the evaporator is communicated and provided with a vacuum pump, the inside of the evaporator is vacuumized by the vacuum pump, the lower part of the first heat exchange chamber is provided with a liquid working medium inlet, the upper part of the first heat exchange chamber is provided with a gaseous working medium outlet, the evaporator is communicated with a condenser through the liquid working medium inlet and the gaseous working medium outlet, the expansion valve is arranged on a pipeline between the liquid working medium inlet and the condenser, the compressor is arranged on a pipeline between the gaseous working medium outlet and the condenser,

a plurality of first heat exchange tubes have been arranged in the first heat exchange chamber, the both ends of a plurality of first heat exchange tubes communicate with first heat exchange chamber exterior space respectively, dirty waste water carries out the flash distillation in getting into the flash chamber through dirty waste water inlet tube intercommunication, the steam rebound that obtains after the flash distillation gets into in the first heat exchange tube through the one end of a plurality of first heat exchange tubes, steam in the first heat exchange tube carries out the heat transfer with the working medium outside the first heat exchange tube, after steam condensation becomes water in the first heat exchange tube, through the other end discharge of first heat exchange tube, dirty waste water after the flash distillation passes through dirty waste water outlet pipe discharge evaporimeter.

Further, a demister is arranged between the first heat exchange chamber and the flash evaporation chamber.

Furthermore, a condensate water tank is arranged on the outer side of the first heat exchange chamber, and the condensate water tank is communicated with the other ends of the first heat exchange tubes.

Furthermore, a condensate pump is arranged outside the evaporator and communicated with the condensate tank.

Further, the sewage and wastewater water-removing pipe is horizontally arranged at the lower part or the bottom of the flash chamber.

Further, the sewage and wastewater inlet pipe is horizontally arranged and communicated with the upper side wall of the flash chamber.

Further, dirty waste water inlet tube is vertical to be arranged and its bottom is located the flash chamber.

Furthermore, the number of the first heat exchange chambers is two, the first heat exchange chambers are arranged on two sides of the sewage and wastewater inlet pipe in an opposite mode, and flash steam enters the first heat exchange pipes through one opposite side of the two first heat exchange chambers to exchange heat.

Furthermore, the condenser comprises a second heat exchange chamber, a to-be-heated liquid inlet chamber and a to-be-heated liquid outlet chamber, the to-be-heated liquid inlet chamber and the to-be-heated liquid outlet chamber are positioned at two ends of the second heat exchange chamber, a plurality of second heat exchange tubes are arranged in the second heat exchange chamber, the to-be-heated liquid inlet chamber and the to-be-heated liquid outlet chamber are communicated with each other through the plurality of second heat exchange tubes, the upper portion of the second heat exchange chamber is communicated with a gaseous working medium outlet in the evaporator through a pipeline, and the lower portion of the second heat exchange chamber is communicated with a liquid.

Compared with the prior art, the invention has the following effects:

through the compression heat pump of this application, can realize containing the waste heat recovery utilization of the dirty waste water of well low temperature industry of a large amount of dissolubility solids, make originally corrosive nature strong, easily cause the dirty waste water of scale deposit jam to turn into clean steam, rethread flash steam comes out heat transfer, has not only realized the high-efficient clean utilization of industrial waste water, and the mode that makes waste water change clean steam into heat transfer again has improved heat exchange efficiency greatly moreover, more is favorable to the recycle of low temperature industry waste heat.

Drawings

FIG. 1 is a schematic top view of the present application (with the wastewater inlet conduit arranged horizontally);

FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic sectional view taken along line C-C of FIG. 1.

Detailed Description