CN202002394U - Cold water/heat pump unit directly taking liquid containing solid impurities as cold or heat sources - Google Patents
Cold water/heat pump unit directly taking liquid containing solid impurities as cold or heat sources Download PDFInfo
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- CN202002394U CN202002394U CN2011200102929U CN201120010292U CN202002394U CN 202002394 U CN202002394 U CN 202002394U CN 2011200102929 U CN2011200102929 U CN 2011200102929U CN 201120010292 U CN201120010292 U CN 201120010292U CN 202002394 U CN202002394 U CN 202002394U
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Abstract
The utility model discloses a cold water/heat pump unit directly taking liquid containing solid impurities as cold or heat sources, and is characterized in that a compressor, a sewage heat exchanger which is in a plate-type heat exchanger structure, a use side heat exchanger and a throttling valve are formed into a circulation circuit. The sewage heat exchanger is connected with a sewage source, and the use side heat exchanger is connected with a user end. Compared with the prior art, the cold water/heat pump unit saves treatment devices including a sewage filtering barrier and the like, adopts a direct-type heat exchanging method of sewage and a refrigerating system, does not need a middle heat exchanging system, enables the efficiency of a whole system to be high, lowers system engineering construction costs and operating costs, simplifies water system pipelines, and facilitates the system routine operation maintenance.
Description
Technical field
The utility model relates to a kind of industrial heat pump system, specifically a kind of is the cold water/source pump of Cooling and Heat Source with the liquid that contains solid impurity directly, is applicable to steam compression type, directly utilizes the liquid that contains solid impurity to realize the cold water/source pump of freezing, heating as Cooling and Heat Source, by contrary Carnot cycle principle.
For convenience of explanation, the liquid that below will contain solid impurity is called sewage.
Background technology
At present, utilize sewage as the cold water/heat pump of Cooling and Heat Source, the sewage source heat pump system of indirect type heat exchange and two kinds of forms of sewage source heat pump system of direct-type heat exchange are arranged.
First kind, the sewage source heat pump system of indirect type heat exchange (hereinafter to be referred as indirect system): sewage does not enter source pump, but after deterring the sewage heat exchanger that enters sewage-intermediary's water heat exchange after filter plant is removed main solid impurity again and intermediary's water heat exchange, drain earlier, intermediary's water is by sewage heat exchanger heating or cool off the laggard water source source pump of going into, as its thermal source (when heating) or cooling source (during refrigeration), reach the purpose that heats or freeze by contrary Carnot cycle principle.That is: sewage is the indirect type heat exchange mode, and water source heat pump units is common steam compression type or absorption type heat pump assembly.This mode has increased heat transfer temperature difference because of there being intermediary, causes heat pump system efficiency to descend thereupon, and because of heat-exchange system in the middle of existing, whole system complexity.
Second kind, the sewage source heat pump system of direct-type heat exchange (hereinafter to be referred as immediate system): sewage is earlier by filter mechanical treatments such as filter screen, grid, Automatic sieve filters, and enter the sewage source heat pump unit again behind the foreign material in detritus tank removal sewage, as its thermal source or cooling source, realize heating the refrigeration purpose.At present the sewage heat exchanger of this mode sewage source heat pump unit be for can not resist blockage structure, and is anticorrosion, shell-tube type structure (heat exchanger tube is generally copper alloy tube), and need regularly carry out physics, Chemical cleaning to the heat exchanger of effluent stream warp; Equally, if take sewage treatment plant's one-level water outlet, then also need to handle and unit is regularly cleaned through sediment.
Above dual mode, sewage all need be taked could use after the relevant treatment measure, the sewerage more complicated, and corollary equipment is many, and the space that machine room needs is bigger.
Summary of the invention
The purpose of this utility model is intended in order to remove sewage disposal system, improve unit efficiency, reduce system engineering cost and operating cost, simplification water system pipeline, to be convenient to system's day-to-day operation and to safeguard, and provide a kind of novel be the cold water/source pump of Cooling and Heat Source directly with the liquid that contains solid impurity.
The technical solution of the utility model is: a kind of is the cold water/source pump of Cooling and Heat Source with the liquid that contains solid impurity directly, characteristics are, form closed circuit by compressor, cold and hot source heat exchanger (sewage heat exchanger), use side heat exchanger (condenser or evaporimeter), choke valve, cold and hot source heat exchanger (sewage heat exchanger) connects source of sewage, use side heat exchanger (condenser/evaporator) to connect user side, wherein, sewage heat exchanger is the plate type heat exchanger structure.
Described plate type heat exchanger structure comprises a few shape sewage backflow passages of being made up of plate, sealing frame and dividing plate, the two ends of sewage backflow passage are provided with sewage inlet and outlet of sewer, the plate that is located on the sewage backflow passage is welded to form the flow of refrigerant cavity in twos, the flow of refrigerant cavity forms refrigerant flow channel by the refrigerant distributor connection, and the refrigerant flow channel two ends are provided with refrigerant inlet and refrigerant outlet.
More reliable and stable in order to ensure unit operation, on the unit closed circuit, can also be provided with the gas-liquid separation holder, the gas-liquid separation holder is connected with using side heat exchanger, sewage heat exchanger and compressor respectively.
Compared with the prior art, the utlity model has following advantage:
1, sewage need not any processing and can directly utilize, and has saved sewage water filtration and treating apparatus such as has deterred;
2, sewage and refrigeration system heat exchange mode are direct-type, heat-exchange system in the middle of need not, whole system efficient height;
3, for both cooling and heating type unit, the cooling and warming conversion can be passed through the manual or automatic switchover of refrigerant line valve, need not the water side and switches;
4, use side water (air conditioner water of user side, technology cooling and heating water etc.) only to flow through using the side heat exchanger (is condenser/evaporator, be cold water during refrigeration, be hot water when heating), it (is sewage heat exchanger that heat source water only flows through cold and hot source heat exchanger, during refrigeration as cooling water, when heating as heat source water), can not use side water and heat source water to mix, thereby the water of having stopped two systems pollutes, mixes mutually, thereby overall system efficiency is improved;
5, only need that sewage side heat exchanger is made anticorrosion structure and get final product, it is anticorrosion to use the side heat exchanger to consider, thereby the unit cost is descended significantly, and operational efficiency also can be higher.
6, using this unit and can simplify water resource heat pump machine room pipe-line system significantly, reduce construction costs, reduce the Operation and Maintenance workload, is energy-conservation and a new high-tech product of saving cost.
Below in conjunction with drawings and Examples the utility model is done at length and to be explained.
Description of drawings
The structural representation of Fig. 1-sewage heat exchanger of the present utility model (evaporimeter);
The cutaway view of Fig. 2-Fig. 1;
The structural representation of Fig. 3-sewage heat exchanger of the present utility model (condenser);
The cutaway view of Fig. 4-Fig. 3;
A kind of refrigeration system flow chart (single heating type) of Fig. 5-the utility model unit;
Second kind of refrigeration system flow chart (single heating type) of Fig. 6-the utility model unit;
The third refrigeration system flow chart (single heating type) of Fig. 7-the utility model unit;
The 4th kind of refrigeration system flow chart (single refrigeration mode) of Fig. 8-the utility model unit;
The 5th kind of refrigeration system flow chart (both cooling and heating type) of Fig. 9-the utility model unit;
The 6th kind of refrigeration system flow chart (both cooling and heating type) of Figure 10-the utility model unit;
The 7th kind of refrigeration system flow chart (both cooling and heating type) of Figure 11-unit of the present invention;
The 8th kind of refrigeration system flow chart (both cooling and heating type) of Figure 12-unit of the present invention.
Accompanying drawing figure is to explanation:
1 compressor, 2 oil eliminators, 3 condensers, 4 devices for drying and filtering, 5 choke valves, 6 gas-liquid separation holders, 7 sewage heat exchangers, 8 cold-producing medium circulating pumps, 9 jet pumps, 10 evaporimeters, 11 plates, 12 sewage backflow passages, 13 sewage inlets, 14 outlets of sewer, 15 refrigerant inlets, 16 refrigerant outlets, 17 sealing frames, 18 dividing plates, 19 flow of refrigerant cavitys, 20 refrigerant distributors, 21 check valves, A valve, B valve.
The specific embodiment
Referring to Fig. 1 to Fig. 4, first talk about the sewage heat exchanger of present technique, the sewage heat exchanger of present technique is a plank frame, described plate type heat exchanger structure comprises by a plurality of plates 11, a few shape sewage backflow passages 12 that sealing frame 17 (comprising the two ends end plate) and dividing plate 18 are formed, the two ends of sewage backflow passage 12 are provided with sewage inlet 13 and outlet of sewer 14, the plate 11 that is located on the sewage backflow passage 12 is welded to form flow of refrigerant cavity 19 in twos, flow of refrigerant cavity 19 forms refrigerant flow channel by refrigerant distributor 20 connections, and the refrigerant flow channel two ends are provided with refrigerant inlet 15 and refrigerant outlet 16.Refrigerant distributor 20 is in order to guarantee that the cold-producing medium uniform distribution enters each runner and carries out heat exchange.
During making, can adopt the plate soldering in twos of band bellows-shaped, refrigerant side adopts the soldering fixing seal, the sewage side adopts gasket seal or sealed with brazing, plate generally adopts the stainless steel material of thickness 0.2～1mm or the alloy material of other non-ferrous metal (choosing according to sewage quality), refrigerant side plate spacing 0.1～5mm, water side panels spacing 0.2～100mm (in the sewage solid impurity plate spacing is big more more for a long time), difference according to plate spacing and water flow velocity, the water side can be designed to a plurality of flow processs, each flow process is established one group or organize plate more, refrigerant side also is designed to one or more flow processs, each flow process is established one group or organize plate (Fig. 1-every flow process of sewage side shown in Figure 4 is 1 group of plate, a plurality of flow processs, refrigerant side is a flow process) more.
Source pump can be provided with one or more sewage heat exchangers as required, refrigerant loop is connected in parallel between each sewage heat exchanger, the sewage side is then connected or is connected in parallel (special occasions, when doing the condenser use as sewage heat exchanger, in order to obtain than big supercooling degree, refrigerant loop also can be connected in series).Sewage heat exchanger is directly as the evaporimeter or the condenser of unit, cold-producing medium and sewage carry out heat exchange, absorb heat and evaporated (when sewage heat exchanger is made evaporimeter) or heat transferred sewage is able to condensation (when sewage heat exchanger is made condenser) from sewage.
The utility model heat pump set system can be divided into three kinds according to its function of use: single heating type, single refrigeration mode and both cooling and heating type.For single heating type unit, sewage heat exchanger is as evaporimeter; For single refrigeration mode unit, sewage heat exchanger is as condenser; For both cooling and heating type unit, when sewage heat exchanger heats as evaporimeter, during refrigeration as condenser.Illustrate below:
Shown in Figure 5 is a kind of structure and cooling flow of single heating type source pump, form closed circuit by compressor 1, oil eliminator 2, condenser 3, device for drying and filtering 4, choke valve 5, gas-liquid separation holder 6, sewage heat exchanger (evaporimeter) 7, cold-producing medium circulating pump 8, jet pump 9, condenser 3 connects user side, and sewage heat exchanger (evaporimeter) 7 connects source of sewage.
The effect that gas-liquid separation holder 6 is set is that to guarantee to enter the fluid of cold-producing medium circulating pump 8 all be liquid, guarantees that simultaneously compressor air suction is not with liquid, safe handling.8 imports of cold-producing medium circulating pump connect gas-liquid separation holder 6, and outlet connects the refrigerant inlet 15 of sewage heat exchanger 7, and the refrigerant outlet 16 of sewage heat exchanger 7 also connects gas-liquid separation holder 6.Gas-liquid separation holder 6 inner refrigerant liquid enter sewage heat exchanger 7 by cold-producing medium circulating pump 8.In sewage heat exchanger 7, cold-producing medium absorbs the heat that enters sewage in the sewage heat exchanger 7 and evaporates, mixture by refrigerant gas, liquid and lubricating oil after the part evaporation is got back in the gas-liquid separation holder 6, its refrigerant gas comes back in the compressor 1 through after the gas-liquid separation, the circulation of beginning next round, liquid general rule are crossed cold-producing medium circulating pump 8 and are entered sewage heat exchanger 7 continuation evaporations once more.The lubricating oil that is separated in the mixture is got back to compressor 1 by special oil return apparatus-jet pump 9.
Cold-producing medium in sewage heat exchanger 7 with the sewage heat exchange based on liquid form, thereby guarantee about 1～4 ℃ of minimum heat transfer temperature difference between cold-producing medium and the sewage, its effect is equivalent to full-liquid type/sprinkling falling-film evaporator.
The compressor that is adopted with cocycle is the compressor that needs lubricating oil to lubricate, and normally moves in order to guarantee unit, and unit need be provided with oil return system specially.In gas-liquid separation holder 6, lubricating oil can not be evaporated, and it is returned compressor 1 by jet pump 9 by injection, and compressor 1 moving component is lubricated.Be illustrated as the hydraulic oil injection oil return of separating, also can adopt high pressure gas to come the injection oil return, only need to draw gases at high pressure this moment and connect injector and get final product in the high-pressure area bypass with oil eliminator 2.
If compressor is the compressor that need not lubricating oil (as the magnetic suspension compressor etc.), then need not to be provided with oil return system and return line.
Evaporimeter inner refrigerant circulation shown in Figure 5 is by cold-producing medium circulating pump running forced circulation, also the cold-producing medium circulating pump can be set and pass through cold-producing medium siphonage Natural Circulation, only need this moment circulating pump is removed, this section pipeline short circuit is got final product, refrigerant system configurations and flow chart are seen Fig. 6.Unit is not except having the cold-producing medium circulating pump at this moment, and flow process is identical, therefore no longer explanation.
If cold-producing medium circulating pump forced refrigeration agent circulation neither is set, also do not utilize siphonage and Natural Circulation then can be reduced to refrigeration system structure shown in Figure 7, this structure need not to be provided with oil return system, compare with the flow process shown in Fig. 5,6, unit efficiency is low relatively.
Fig. 8 is a kind of structure and cooling flow of single refrigeration mode source pump, and is the same substantially with Fig. 7, and just this moment, sewage heat exchanger 7 was as condenser, and what link to each other with user side is evaporimeter 10.
Shown in Figure 9 is a kind of structure of both cooling and heating type source of sewage Crew Cooling System, as previously mentioned, this form unit changes in temperature conversion can be adopted fluorine system reversing mode, use the water system of side (being user side) and cold and hot source (being the sewage side) to need not to switch, utilize refrigerant flow direction switch valve (A, B) can realize cold and hot switching.
Heating operation: valve A opens, and valve B closes.The same Fig. 5 of refrigerant flow direction this moment.Under this operational mode, use the side heat exchanger to be condenser 3, cold and hot side heat exchanger---sewage heat exchanger 7 is an evaporimeter.
Refrigerating operaton: valve A closes, and valve B opens.Compressor 1 exhaust enters sewage heat exchanger 7 through oil eliminator 2, and this moment, sewage heat exchanger 7 was a condenser.In sewage heat exchanger 7, its heat discharges to sewage, allows it that heat is taken away.After the release heat, the cold-producing medium device that is condensed becomes liquid, flows out from sewage heat exchanger 7 lower part outlets, through becoming gas-liquid mixture behind device for drying and filtering 4, the choke valve 5, enters and uses the side heat exchanger, and use the side heat exchanger to be evaporimeter 10 this moment.In evaporimeter 10, the cold-producing medium evaporation, the heat that absorbs water makes its cooling, reaches the purpose of refrigeration.The cold-producing medium that has absorbed heat is evaporated into steam and comes back in the compressor 1, the circulation of beginning next round.
As seen, the cold-warm type unit is compared with the single heating type unit, the valve that many refrigerant flow directions switch, sewage heat exchanger when heating as evaporimeter, when refrigeration as condenser.
Cold-producing medium shown in Figure 9 circulation is by cold-producing medium circulating pump running forced circulation, also the cold-producing medium circulating pump can be set and by cold-producing medium siphonage Natural Circulation, cooling flow does not change.
Shown in Figure 10 is the another kind of structure of both cooling and heating type source of sewage Crew Cooling System, and the A on this structured liquids pipeline, B valve substitute with check valve.Like this, when the unit cooling and warming switches, only need the mode opening/closing according to Fig. 9 with the A of suction and discharge pipeline, B valve, liquid line automaticallyes switch.
If cold-producing medium circulating pump forced refrigeration agent circulation neither is set, do not utilize siphonage and Natural Circulation yet, then Fig. 9, Figure 10 refrigeration system can be reduced to Figure 11 and structure shown in Figure 12 respectively, this structure has been removed the gas-liquid separation holder, and (valve A opens when being heating operation, valve B closes for valve A, the same respectively Fig. 9 of B on-off action, Figure 10; Valve A closes during refrigerating operaton, valve B opens).Compare with the flow process shown in Fig. 9,10, unit efficiency is low relatively.
In addition, more than several form units under different instructions for use prerequisites, also can increase corresponding auxiliary equipment as required, spray cooling, economizer, heat regenerator as oil cooler, liquid, so that unit can stablize, efficiently turn round.
In order to guarantee that vaporizer side sewage does not freeze, protective devices such as unit also can be installed the pressure of inspiration(Pi) adjustment, controls and cut off the water supply, low temperature are to guarantee unit operation safety.
In sum, the utility model compared with prior art has significantly progressive and substantive distinguishing features:
The one, the sewage heat exchanger of this unit is the plate type heat exchanger of particular design, so that the liquid such as sewage need not can directly advance unit through any processing, system is succinct;
The 2nd, the cold-producing medium of this source pump and sewage directly carry out heat exchange, need not intermediary, its operational efficiency height. The source pump of same efficient, the primary energy ratio of employing immediate system mode is bigger by about 0.1～0.2 than indirect system; Annual total coal conservation Duos 7% than indirect system is about; The total reduction of immediate system pollutant is approximately high by about 8% than indirect system;
The 3rd, during heating operation, with the heat exchanger of sewage heat change be the evaporimeter of unit, the cold-producing medium that cold-producing medium makes plate type heat exchanger by refrigerant circulation pump or siphonage is take liquid state as main, thereby makes the efficient of unit adopt the unit of conventional heat exchanger (such as dry evaporator) high by 5～10%; Equally, during refrigerating operaton, with the heat exchanger of sewage heat change be the condenser of unit, sewage is as the direct chiller-heat pump unit of cooling water, this moment, sewage temperature was relatively low, the conventional handpiece Water Chilling Units with the cooling tower cooling of unit efficiency is high by about 5%;
The 4th, for different sewage water quality, the heat exchanger of sewage side can adopt unlike material to make, and material requires to require low than shell and tube exchanger. Such as city domestic sewage, adopt the stainless steel heat exchanger to get final product, shell-tube type then need adopt copper alloy tube, and could use after water filtration need to being processed, and the plate type heat exchanger infrastructure cost is cheap by contrast;
The 5th, conversion can be adopted fluorine system reversing mode for cooling and warming dual-purpose type sewage source heat pump unit changes in temperature, like this, use the water system of side (user side) and cold and hot source (being the sewage side) to need not to switch, therefore water system need not to arrange conversion valve and pipeline, make water system succinct, thoroughly stop the conventional valves converting system and leaked, use side water system and Cooling and Heat Source water system to mix water, ability damaged phenomenon because of short circuit, also reduced simultaneously the pressure loss of two water systems. When as the sewage band corrosivity of Cooling and Heat Source, only need to make the cold and hot source heat exchanger of unit corrosion resistant, use the side heat exchanger still to adopt common material heat exchanger get final product, like this than the water side commutate, the fluorine side unit that do not commutate must all make corrosion-resistant with two heat exchangers and can save about 20% product cost.
Claims (3)
1. one kind is the cold water/source pump of Cooling and Heat Source with the liquid that contains solid impurity directly, it is characterized in that, form closed circuit by compressor, sewage heat exchanger, use side heat exchanger, choke valve, sewage heat exchanger connects source of sewage, use the side heat exchanger to connect user side, wherein, sewage heat exchanger is a plate type heat exchanger.
2. according to claim 1 is the cold water/source pump of Cooling and Heat Source with the liquid that contains solid impurity directly, it is characterized in that, described plate type heat exchanger structure comprises by plate (11), a few shape sewage backflow passages (12) that sealing frame (17) and dividing plate (18) are formed, the two ends of sewage backflow passage (12) are provided with sewage inlet (13) and outlet of sewer (14), the plate (11) that is located on the sewage backflow passage (12) is welded to form flow of refrigerant cavity (19) in twos, flow of refrigerant cavity (19) forms refrigerant flow channel by refrigerant distributor (20) connection, and the refrigerant flow channel two ends are provided with refrigerant inlet (15) and refrigerant outlet (16).
3. according to claim 1 is the cold water/source pump of Cooling and Heat Source with the liquid that contains solid impurity directly, it is characterized in that, be provided with the gas-liquid separation holder on the unit closed circuit, the gas-liquid separation holder is connected with using side heat exchanger, sewage heat exchanger and compressor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200102929U CN202002394U (en) | 2011-01-07 | 2011-01-07 | Cold water/heat pump unit directly taking liquid containing solid impurities as cold or heat sources |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200102929U CN202002394U (en) | 2011-01-07 | 2011-01-07 | Cold water/heat pump unit directly taking liquid containing solid impurities as cold or heat sources |
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| CN202002394U true CN202002394U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200102929U Expired - Fee Related CN202002394U (en) | 2011-01-07 | 2011-01-07 | Cold water/heat pump unit directly taking liquid containing solid impurities as cold or heat sources |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116543A (en) * | 2011-01-07 | 2011-07-06 | 王英慧 | Cold water/heat pump unit directly taking liquid containing solid impurities as cold/heat source |
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2011
- 2011-01-07 CN CN2011200102929U patent/CN202002394U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116543A (en) * | 2011-01-07 | 2011-07-06 | 王英慧 | Cold water/heat pump unit directly taking liquid containing solid impurities as cold/heat source |
| CN102116543B (en) * | 2011-01-07 | 2014-06-18 | 王英慧 | Cold water/heat pump unit directly taking liquid containing solid impurities as cold/heat source |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140107 |