阅读说明：本技术 一种蒸汽制冷余热回收系统及方法 (A kind of steam-refrigerated residual neat recovering system and method ) 是由 冷松 刘富 刘晓芳 沈奇 陈志坚 张永青 张发天 林开隆 于 2019-09-17 设计创作，主要内容包括：本发明公开了一种蒸汽制冷余热回收系统及方法,包括制冷单元和制热单元,制冷单元包括依次首尾相连的供氨装置、第一压缩机、蒸发式冷凝器和设有减压阀的第一循环管道；制热单元包括第一流量阀、第二流量阀、水箱、下排出端与第一循环管道联通的冷却器、进气端与冷却器的出气端联通的第二压缩机、进气端与第二压缩机的出气端联通的热回收器和设有循环泵的第二循环管道,第一压缩机的出气端、第一流量阀与冷却器的进气端依次联通,热回收器与水箱通过第二循环管道首尾联通,热回收器的下排放端、第二流量阀与冷却器依次联通；本发明充分的利用了制冷单元和制热单元的余热,降低制冷单元的冷凝压力,提高了制冷效率和热回收利用率,且节能环保。(The invention discloses a kind of steam-refrigerated residual neat recovering system and method, including refrigeration unit and heating unit, refrigeration unit includes successively end to end for ammonia device, the first compressor, evaporative condenser and first circulation pipeline equipped with pressure reducing valve；Heating unit includes the heat regenerator of the outlet side connection of the cooler of first flow valve, second flow valve, water tank, lower outlet side and first circulation pipeline connection, the second compressor of the outlet side connection of inlet end and cooler, inlet end and the second compressor and the second circulation pipeline equipped with circulating pump, the inlet end of the outlet side of first compressor, first flow valve and cooler successively connection, heat regenerator and water tank are by second circulation pipeline head and the tail connection, lower discharge end, second flow valve and the cooler of heat regenerator successively connection；The waste heat of refrigeration unit and heating unit is adequately utilized in the present invention, reduces the condensing pressure of refrigeration unit, improves refrigerating efficiency and recuperation of heat utilization rate, and energy conservation and environmental protection.)

1. a kind of steam-refrigerated residual neat recovering system, it is characterised in that: including refrigeration unit and heating unit, the refrigeration unit Including pass sequentially through pipeline connection for ammonia device, the first compressor and evaporative condenser, the evaporative condenser with It is described for being connected with first circulation pipeline between ammonia device, be provided with pressure reducing valve on the first circulation pipeline；The heating is single Member includes cooler, the second compressor, first flow valve, second flow valve, heat regenerator, second circulation pipeline and water tank, institute The inlet end of the outlet side of the first compressor, the first flow valve and the cooler successively connection is stated, the cooler The inlet end of lower outlet side and the first circulation pipeline connection, the outlet side of the cooler and second compressor joins Logical, the outlet side of second compressor is connect with the inlet end of the heat regenerator, the water inlet end of the heat regenerator, water outlet End is set on the second circulation pipeline respectively with the water inlet end of the water tank, water outlet by the second circulation pipeline connection It is equipped with circulating pump, the lower discharge end of the heat regenerator, the second flow valve and the cooler successively connection.

2. a kind of steam-refrigerated residual neat recovering system according to claim 1, it is characterised in that: the heat regenerator includes Shell, the first heat exchanger tube, the second heat exchanger tube and third heat exchanger tube, first heat exchanger tube, second heat exchanger tube and described the Three heat exchanger tubes successively connection and are respectively positioned in the shell, and the diameter of first heat exchanger tube is greater than the straight of second heat exchanger tube Diameter, the diameter of second heat exchange pipeline is greater than the diameter of the third heat exchanger tube, in second heat exchanger tube and the third It is provided with first filter between heat exchanger tube, is provided with the second filtering between first heat exchanger tube and second heat exchanger tube Device, the top side of the shell are provided with air inlet, and the top other side of the shell is provided with water outlet, the water outlet With the third heat exchanger tube connection, the bottom end side of the shell is provided with water inlet, the water inlet and first heat exchange The bottom end other side of pipe connection, the water inlet and the water outlet and the second circulation pipeline connection, the shell is arranged There are discharge outlet, the discharge outlet and the second flow valve connection.

3. according to claim 1 to a kind of steam-refrigerated exhaust heat recovering method described in 2, it is characterised in that: include the following steps,

One, it is controlled to adjust by the first flow valve a part of high pressure superheater ammonia steam from first compressor is defeated It send into the cooler, another part high pressure superheater ammonia steam of first compressor is delivered to the evaporating type condensing Device forms refrigeration cycle through the pressure reducing valve and the first circulation pipeline；

Two, it is steamed into the washed ammonia for being cooled to liquefied ammonia and generating saturation overheat of the high pressure superheater ammonia steam in the cooler Vapour,

Three, the lower outlet side that liquefied ammonia after cooling passes through the cooler under gravity in step 2 drains into described first In circulating line, liquefied ammonia after cooling through the pressure reducing valve decompression after return to it is described for ammonia device, further to recycle；

Four, after saturation overheat ammonia steam is by the discharge of the outlet side of the cooler in step 2, through second compressor into One step compresses the ammonia steam to form high pressure at higher temperature, then is delivered to the heat regenerator；

Five, into the heat regenerator high temperature and pressure ammonia steam with from the water inlet of the heat regenerator enter cold water into Row heat exchange, high temperature and pressure ammonia steam form the liquid ammonia of high pressure medium temperature, and cold water heat absorption is at hot water and passes through the heat regenerator Water outlet discharge, hot water enter the water tank through the second circulation pipeline, transport through the circulating pump to the heat regenerator Carry out further circulating-heating；

Six, after liquid ammonia is heated to the stabilization of the hot water temperature in the second circulation pipeline, pass through and open second flow valve, heat High temperature and pressure ammonia steam and liquid ammonia in recover by discharge outlet enter cooler, and wash cooling at liquefied ammonia and generates again The ammonia steam of saturation overheat repeats step 3 to step 5 later.

4. a kind of steam-refrigerated residual neat recovering system according to claim 1, it is characterised in that: first compressor is Low pressure compressor.

5. a kind of steam-refrigerated residual neat recovering system according to claim 1, it is characterised in that: second compressor is High pressure compressor.

6. a kind of steam-refrigerated residual neat recovering system according to claim 1, it is characterised in that: the second circulation pipeline It is inside provided with temperature sensor, the temperature sensor electric signal is connected with external temperature controller, and the second flow valve is Electromagnetic flow valve, the electromagnetic flow valve are connect with the external temperature controller electric signal.

7. a kind of steam-refrigerated residual neat recovering system according to claim 1, it is characterised in that: the second circulation pipeline Outer peripheral surface be equipped with insulating layer.

8. a kind of steam-refrigerated residual neat recovering system according to claim 1 and method, it is characterised in that: in the evaporation Liquid reservoir is provided between formula condenser and the first circulation pipe, the liquid reservoir input terminal and the evaporative condenser join It is logical, the liquid reservoir output end and the first circulation pipe connection.

9. a kind of steam-refrigerated residual neat recovering system according to claim 8 and method, it is characterised in that: described first follows Oil water separator is connected on endless tube road, the oil water separator is between the liquid reservoir and the pressure reducing valve, the grease Separator is between the pressure reducing valve and the cooler.

Technical field

The present invention relates to steam production technical fields, more specifically, it relates to a kind of steam-refrigerated residual neat recovering system And method.

Background technique

It is increasingly depleted with mankind's energy, on how to reduce energy consumption, promote green energy resource, realize energy recovery Recycling just becomes countries in the world topic of interest.Existing refrigeration unit includes the compression for passing sequentially through pipeline connection Machine, condenser, expansion valve and evaporator；Cryogenic fluid is entered in compressor with vapo(u)rous state, and cryogenic fluid is compressed At the superheated steam state of elevated pressures；Then, it by the cryogenic fluid cooling of superheated steam state and is condensed by condenser Saturated liquid；Later, saturated liquid flows through expansion valve to reduce pressure；Finally, liquid and vapor refrigerant flow through evaporator, with Realize the effect of compression refrigeration.

However, in some production and processing applications, in addition to there are while refrigeration demand, there is also need using heat Water handles product；Existing refrigeration and heating combined equipment are usually that refrigeration system and hot-water heating system are kept completely separate operation, Hot-water heating system generallys use the extra powers such as burning boiler or electric heater and is heated, and in actual use, coal-burning boiler is deposited In the high problem of certain pollution and energy consumption, and the generation of hot water is unrelated with demand, and the waste heat of superfluous heating water is wasted；And In refrigeration systems, thermal energy being generated during compressor compresses would generally be vented directly in atmosphere, cause the waste of thermal energy With the raising of entire atmospheric temperature, thus generation environment pollute, meanwhile, the condensation temperature in refrigeration system is consistently in Gao Shui It is flat, thus comprehensively cause refrigeration system high power consumption and low cooling performance.

Summary of the invention

In view of the deficiencies of the prior art, the present invention intends to provide a kind of steam-refrigerated residual neat recovering system and Method has the advantages that energy conservation and environmental protection, recuperation of heat utilization rate and high cooling efficiency.

To achieve the above object, the present invention provides the following technical scheme that

A kind of steam-refrigerated residual neat recovering system, including refrigeration unit and heating unit, the refrigeration unit include successively By pipeline connect for ammonia device, the first compressor and evaporative condenser, in the evaporative condenser and described for ammonia It is connected with first circulation pipeline between device, is provided with pressure reducing valve on the first circulation pipeline；The heating unit includes cold But device, the second compressor, first flow valve, second flow valve, heat regenerator, second circulation pipeline and water tank, first pressure The outlet side of contracting machine, the first flow valve and the cooler inlet end successively connection, the lower outlet side of the cooler With the first circulation pipeline connection, the inlet end connection of the outlet side of the cooler and second compressor, described The outlet side of two compressors is connect with the inlet end of the heat regenerator, the water inlet end of the heat regenerator, water outlet respectively with The water inlet end of the water tank, water outlet are provided with circulation on the second circulation pipeline by the second circulation pipeline connection Pump, the lower discharge end of the heat regenerator, the second flow valve and the cooler successively connection.

So set, firstly, being compressed into high pressure superheater by being delivered in the first compressor for ammonia device offer ammonia Then a part of high pressure superheater ammonia steam that first compressor is discharged is delivered to evaporative condenser and is condensed into liquid by ammonia steam Ammonia, condensed liquefied ammonia enters first circulation pipeline and is delivered to again for ammonia device after pressure reducing valve depressurizes, to form refrigeration Circulation loop；In addition, refrigeration unit uses evaporative condenser, has the advantages that economize on electricity, water-saving and occupied area are small, realize section The effect of energy and environmental protection；Meanwhile first flow valve is adjusted according to demand and controls to adjust another part height from the first compressor Hot ammonia steam is pressed through to be delivered in cooler, avoid the excessively high high power consumption for causing refrigeration unit of refrigeration unit condensation temperature and The problem of low cooling, and avoid the thermal energy of refrigeration unit from wasting, and then realize the effect of energy conservation and environmental protection；Into in cooler High pressure superheater ammonia steam it is washed be cooled to liquefied ammonia and generate saturation overheat ammonia steam, work of the liquefied ammonia after cooling in gravity It is drained into first circulation pipeline with the lower lower outlet side by cooler and is returned to after pressure reducing valve depressurizes for ammonia device, to realize Improve the function of the rate of recovery of liquefied ammonia and the refrigerating efficiency of refrigeration unit；Saturation overheat ammonia steam is arranged by the outlet side of cooler After out, after the second compressor further compresses and forms the ammonia steam of high pressure at higher temperature, then it is delivered to heat regenerator；It is returned into heat The high temperature and pressure ammonia steam received in device exchanges heat with the cold water entered from the water inlet end of heat regenerator, high temperature and pressure ammonia steam shape At the liquid ammonia of high pressure medium temperature, cold water heat absorption is discharged at hot water and by the water outlet of heat regenerator, realizes to the preliminary of cold water Heating；Later, hot water enters water tank by second circulation pipeline, transports through circulating pump to the further circulation of heat regenerator progress and adds After heat is stablized to hot water temperature, and then realize the function of guaranteeing stable in outlet water temperature；Finally, as the hot water temperature in heat regenerator When stablizing, second flow valve is opened, a part of high temperature and pressure ammonia steam and liquid ammonia in heat regenerator are entered by discharge outlet Wash cooling at liquefied ammonia and generates the ammonia steam for being saturated and overheating to cooler again, and liquefied ammonia is again introduced into first circulation pipeline, is saturated Overheat ammonia steam is again introduced into the second compressor, the waste heat and liquefied ammonia of heating unit is utilized to greatest extent, to realize into one Step reduces the consumption of whole system liquefied ammonia and improves recuperation of heat utilization rate and refrigerating efficiency.

Further setting: the heat regenerator includes shell, the first heat exchanger tube, the second heat exchanger tube and third heat exchanger tube, institute It states the first heat exchanger tube, second heat exchanger tube and the third heat exchanger tube and successively connection and is respectively positioned in the shell, described the The diameter of one heat exchanger tube is greater than the diameter of second heat exchanger tube, and the diameter of second heat exchange pipeline exchanges heat greater than the third The diameter of pipe is provided with first filter, first heat exchanger tube between second heat exchanger tube and the third heat exchanger tube The second filter is provided between second heat exchanger tube, the top side of the shell is provided with air inlet, the shell The top other side be provided with water outlet, the water outlet and the third heat exchanger tube connection, the bottom end side of the shell is set It is equipped with water inlet, the water inlet and the first heat exchanger tube connection, the water inlet is followed with the water outlet with described second Endless tube road connection, the bottom end other side of the shell are provided with discharge outlet, the discharge outlet and the second flow valve connection.

It is changed so set, cold water enters from the water inlet for being set to housing bottom side first with the first of water inlet connection In heat pipe, then, the cold water in the first heat exchanger tube is entered the second filter by the circulating pump due to being set to second circulation pipeline Interior filtering；Filtered cold water enters the first mistake being set between the second heat exchanger tube and third heat exchanger tube in the second heat exchanger tube Filter is crossed to be filtered again, is avoided the impurity in cold water from causing line clogging to second circulation pipeline in transport, is realized to entrance The cold water of heat regenerator carries out the effect of secondary filter；After filtered cold water enters in third heat exchanger tube again, be set in The water outlet of the housing tip other side flow to second circulation pipeline, enters water tank by second circulation pipeline, into after water tank Water is again introduced into heat regenerator through second circulation pipeline by water inlet again, to realize between heat regenerator and water tank Form the water-flow circuit of closure；During above-mentioned water circulation, the high temperature and pressure ammonia steam of the second compressor discharge is from setting The air inlet for being placed in housing tip side enters in heat regenerator, in shell and mutually connection the first heat exchanger tube, second Heat exchanger tube and third heat exchanger tube with high temperature and pressure ammonia steam heat-exchanging, the first heat exchanger tube, the second heat exchanger tube and third heat exchanger tube pair The intracorporal cold water heat exchange of shell, and then realize the effect to the cold water heating entered in heat regenerator；In addition, the first heat exchanger tube is straight Diameter is greater than the diameter of the second heat exchanger tube, and the diameter of the second heat exchange pipeline is greater than the diameter of third heat exchanger tube, avoids the first heat exchanger tube While blocking with the second heat exchange pipeline, pipe diameter minimum and close air inlet due to third heat exchanger tube, unit The heat exchange area of volume is bigger, therefore the water heating temperature being located in third heat exchanger tube is high, to further improve into the The heat transfer rate of water in two circulating lines；And then realize the effect for improving the recuperation of heat utilization rate of heating unit.

A kind of steam-refrigerated exhaust heat recovering method, includes the following steps,

One, it is controlled to adjust by the first flow valve and steams a part of high pressure superheater ammonia from first compressor Vapour is delivered in the cooler, and it is cold that another part high pressure superheater ammonia steam of first compressor is delivered to the vaporation-type Condenser forms refrigeration cycle through the pressure reducing valve and the first circulation pipeline；

Two, into the washed ammonia for being cooled to liquefied ammonia and generating saturation overheat of the high pressure superheater ammonia steam in the cooler Steam,

Three, the lower outlet side that liquefied ammonia after cooling passes through the cooler under gravity in step 2 drains into described In first circulation pipeline, liquefied ammonia after cooling through the pressure reducing valve decompression after return to it is described for ammonia device, further to recycle benefit With；

Four, it after the outlet side discharge that saturation overheat ammonia steam passes through the cooler in step 2, is compressed through described second Machine further compresses the ammonia steam for forming high pressure at higher temperature, then is delivered to the heat regenerator；

Five, into the heat regenerator high temperature and pressure ammonia steam with enter from the water inlet of the heat regenerator it is cold Water exchanges heat, and high temperature and pressure ammonia steam forms the liquid ammonia of high pressure medium temperature, and cold water heat absorption is at hot water and passes through the recuperation of heat The water outlet of device is discharged, and hot water enters the water tank through the second circulation pipeline, transports through the circulating pump to the heat and returns It receives device and carries out further circulating-heating；

Six, after liquid ammonia is heated to the stabilization of the hot water temperature in the second circulation pipeline, pass through and open second flow Valve, high temperature and pressure ammonia steam and liquid ammonia in heat regenerator by discharge outlet enter cooler again wash cooling at liquefied ammonia simultaneously The ammonia steam for generating saturation overheat repeats step 3 to step 5 later.

Further setting: first compressor is low pressure compressor.

So set, the utilization rate due to the first compressor is high, the first compressor uses low pressure compressor thus, and utilization is low The high advantage of the durability and stability that the electrical machinery life of pressure compressor is long, failure rate is extremely low and compressor is whole, plays guarantor Card refrigeration unit and heating unit can be stablized and longtime running acts on.

Further setting: second compressor is high pressure compressor.

So set, using high pressure compressor by the second compressor, the receiving axial gas power of high pressure compressor is utilized Ability it is good, power consumption is lower, air-breathing preheats small and high volumetric efficiency advantage, play guarantee heating unit stable operation it is same When, it is further reduced the effect of the loss of heating unit energy.

Further setting: being provided with temperature sensor in the second circulation pipeline, the temperature sensor electric signal connects It is connected to external temperature controller, the second flow valve is electromagnetic flow valve, the electromagnetic flow valve and the external temperature control Device electric signal connection processed.

So set, the hot water temperature in second circulation pipeline reaches the temperature sensing being set in first circulation pipeline When the presetting stationary value of device, temperature sensor sends a signal to the external temperature control that electric signal is connected to temperature sensor Device, the electromagnetic flow valve that external temperature controller control electric signal is connected to external temperature controller are opened, play and follow second Before hot water in endless tube reaches presetting stationary value, lower row of the high temperature and pressure ammonia steam in heat regenerator from heat regenerator is prevented End outflow is put through in pipeline to cooler, and the effect for causing the hot water heating rate in heat regenerator low, it further realizes and mentions The function of the rate of heat addition of high whole recuperation of heat utilization rate and cold water.

Further setting: the outer peripheral surface of the second circulation pipeline is equipped with insulating layer.

So set, insulating layer is arranged by the outer peripheral surface in second circulation pipeline, hot water is reduced during circulation Caused by thermal loss, play the effect for being further ensured that recuperation of heat utilization rate is high.

Further setting: liquid reservoir, the storage are provided between the evaporative condenser and the first circulation pipe Liquid device input terminal and the evaporative condenser connection, the liquid reservoir output end and the first circulation pipe connection.

So set, the ammonia steam of high temperature and pressure is after evaporative condenser is condensed into liquefied ammonia, liquefied ammonia is from evaporating type condensing Device is discharged into the liquid reservoir being set between evaporative condenser and first circulation pipe, avoids accumulating in evaporative condenser Heat-transfer effect that is more and influencing evaporative condenser, plays liquefied ammonia after storage condensation, fills the heat transfer area of evaporative condenser Divide and plays a role；Meanwhile it preventing liquid refrigerant from entering the first compressor and causing the problem of liquid hammer occur；It is further ensured that refrigeration Unit can be run steadily in the long term and the effect of high cooling efficiency.

Further setting: oil water separator is connected on the first circulation pipeline, the oil water separator is located at the storage Between liquid device and the pressure reducing valve, the oil water separator is between the pressure reducing valve and the cooler.

So set, being compressed what is adulterated in liquefied ammonia from first by the oil water separator being connected on first circulation pipeline Machine and the lubricating oil of the second compressor outflow are separated, to ensure that the purity and quality of refrigeration unit liquefied ammonia circulation.

In conclusion the present invention passes through first flow valve, cooler, the second compressor, heat regenerator, second circulation pipeline And water tank, using refrigeration unit waste heat circulation heat water, avoid because condensation temperature it is excessively high caused by refrigeration unit high electric power damage The problem of consumption and low cooling, realization improve refrigerating efficiency and energy-efficient effect；Meanwhile it is further right by the second compressor The heating of ammonia steam, plays the heat recovery efficiency for improving heating unit；By heat regenerator, second circulation pipeline, circulating pump and Water tank formed heat exchange cycle closed circuit, improve the rate of heat addition of cold water, meanwhile, heat regenerator, second circulation pipeline and The water temperature of water tank is consistent, ensure that the stability of water tank leaving water temperature, plays the role of further increasing heat recovery rate； By the lower discharge end and first circulation pipeline connection of cooler, the system realized recycling liquefied ammonia after cooling, improve refrigeration unit Cold efficiency, energy conservation and the function of environmental protection；By second flow valve, a part of high temperature and pressure in recycling heat regenerator is controlled to adjust Ammonia steam and liquid ammonia realize the rate of recovery and recuperation of heat utilization rate for further increasing liquefied ammonia, reduce whole system to cooler The consumption of the liquefied ammonia of system, to reach further energy-efficient function.

Detailed description of the invention

Fig. 1 is the system structure diagram of the embodiment of the present invention；

Fig. 2 is the structural schematic diagram of heat regenerator of the embodiment of the present invention.

In figure: 1, refrigeration unit；2, heating unit；3, for ammonia device；4, the first compressor；5, evaporative condenser；6, First circulation pipeline；7, pressure reducing valve；8, cooler；9, the second compressor；10, first flow valve；11, second flow valve；12, hot Recover；13, second circulation pipeline；14, water tank；15, circulating pump；16, shell；17, the first heat exchanger tube；18, the second heat exchange Pipe；19, third heat exchanger tube；20, first filter；21, the second filter；22, air inlet；23, water outlet；24, water inlet； 25, discharge outlet；26, temperature sensor；27, insulating layer；28, liquid reservoir；29, oil water separator.

Specific embodiment

To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached Figure is explained.It should be noted that word "up" and "down" used in the following description refers to the direction in attached drawing 1, word Language " bottom end " and " top " refer to the direction towards geometric center of specific component.

The most critical design of the present invention is: being compressed by the first compressor 4, first flow valve 10, cooler 8, second The waste heat water heating circulation that machine 9, heat regenerator 12, second circulation pipeline 13 and water tank 14 are formed, utilizes refrigeration unit more than 1 Water is heated in thermal cycle, avoid because condensation temperature it is excessively high caused by refrigeration unit 1 high power consumption and the problem of low cooling, from And it realizes and improves refrigerating efficiency and energy-efficient effect；Meanwhile further being heated up to ammonia steam by the second compressor 9, it plays Improve the heat recovery efficiency of heating unit 2；

The heat exchange cycle closed circuit formed by heat regenerator 12, second circulation pipeline 13, circulating pump 15 and water tank 14, The rate of heat addition of cold water is improved, meanwhile, heat regenerator 12, second circulation pipeline 13 are consistent with the water temperature of water tank 14, ensure that While the stability of 14 leaving water temperature of water tank, play the role of further increasing heat recovery rate；Pass through cooler 8 Lower discharge end and 6 connection of first circulation pipeline recycle liquefied ammonia after cooling, realize the refrigerating efficiency for improving refrigeration unit 1, energy conservation With the function of environmental protection；By second flow valve 11, a part of high temperature and pressure ammonia steam in recycling heat regenerator 12 is controlled to adjust With liquid ammonia to cooler 8, the rate of recovery and recuperation of heat utilization rate for further increasing liquefied ammonia are realized, improve entirety to reach The function of recuperation of heat utilization rate and refrigerating efficiency；The present invention rationally recycles liquefied ammonia, reduces disappearing for the liquefied ammonia of total system Consumption, to reach the double effects of further energy conservation and environmental protection.

It please refers to shown in Fig. 1 to Fig. 2, a kind of steam-refrigerated residual neat recovering system, including refrigeration unit 1 and heating unit 2, Refrigeration unit 1 include pass sequentially through pipeline connection for ammonia device 3, the first compressor 4 and evaporative condenser 5, in vaporation-type Condenser 5 and for being connected with first circulation pipeline 6 between ammonia device 3, is provided with pressure reducing valve 7 on first circulation pipeline 6；Heating is single Member 2 includes cooler 8, the second compressor 9, first flow valve 10, second flow valve 11, heat regenerator 12, second circulation pipeline 13 and water tank 14, the inlet end of the outlet side of the first compressor 4, first flow valve 10 and cooler 8 successively connection, cooler 8 Lower outlet side and 6 connection of first circulation pipeline, the inlet end connection of the outlet side of cooler 8 and the second compressor 9, second press The outlet side of contracting machine 9 is connect with the inlet end of heat regenerator 12, the water inlet end of heat regenerator 12, water outlet respectively with water tank 14 Water inlet end, water outlet pass through 13 connection of second circulation pipeline, are provided with circulating pump 15, heat regenerator on second circulation pipeline 13 12 lower discharge end, second flow valve 11 and cooler 8 successively connection.

Seen from the above description, firstly, being compressed into height by being delivered in the first compressor 4 for the offer ammonia of ammonia device 3 The ammonia steam of heat is pressed through, then, a part of high pressure superheater ammonia steam that the first compressor 4 is discharged is delivered to evaporative condenser 5 are condensed into liquefied ammonia, and condensed liquefied ammonia enters first circulation pipeline 6 and is delivered to again after the decompression of pressure reducing valve 7 for ammonia device 3, To form refrigeration cycle；In addition, refrigeration unit 1 uses evaporative condenser 5, there is economize on electricity, water-saving and occupied area Small advantage realizes the effect of energy conservation and environmental protection；

Meanwhile another part height of the control and regulation of first flow valve 10 from the first compressor 4 is adjusted according to demand and is pressed through Hot ammonia steam is delivered in cooler 8, avoids the excessively high high power consumption for causing refrigeration unit of 1 condensation temperature of refrigeration unit and low The problem of cooling, and avoid the thermal energy of refrigeration unit 1 from wasting, and then realize the effect of energy conservation and environmental protection；Into in cooler 8 High pressure superheater ammonia steam it is washed be cooled to liquefied ammonia and generate saturation overheat ammonia steam, work of the liquefied ammonia after cooling in gravity It is drained into first circulation pipeline 6 with the lower lower outlet side by cooler 8 and is returned to after the decompression of pressure reducing valve 7 for ammonia device 3, thus Realize the function of the refrigerating efficiency of the rate of recovery and refrigeration unit 1 that improve liquefied ammonia；Saturation overheat ammonia steam is gone out by cooler 8 After the discharge of gas end, after further compression forms the ammonia steam of high pressure at higher temperature through the second compressor 9, then it is delivered to heat regenerator 12；It exchanges heat into the high temperature and pressure ammonia steam in heat regenerator 12 with the cold water entered from the water inlet end of heat regenerator 12, High temperature and pressure ammonia steam forms the liquid ammonia of high pressure medium temperature, and cold water heat absorption is at hot water and passes through 23 row of water outlet of heat regenerator 12 Out, the preliminary heating to cold water is realized；Later, hot water enters water tank 14 by second circulation pipeline 13, transports through circulating pump 15 After carrying out further circulating-heating to hot water temperature's stabilization to heat regenerator 12, and then realize the function for guaranteeing stable in outlet water temperature Energy；

Finally, when the hot water temperature in heat regenerator 12 stablizes, second flow valve 11 is opened, one in heat regenerator 12 Into cooler 8, wash cooling at liquefied ammonia and generates saturation again by discharge outlet 25 for part high temperature and pressure ammonia steam and liquid ammonia The ammonia steam of overheat, liquefied ammonia are again introduced into first circulation pipeline 6, and saturation overheat ammonia steam is again introduced into the second compressor 9, maximum The waste heat and liquefied ammonia using heating unit 2 of limit, to realize the consumption for being further reduced whole system liquefied ammonia and improve Recuperation of heat utilization rate and refrigerating efficiency.

Further: heat regenerator 12 includes shell 16, the first heat exchanger tube 17, the second heat exchanger tube 18 and third heat exchanger tube, First heat exchanger tube 17, the second heat exchanger tube 18 and third heat exchanger tube successively connection and are respectively positioned in shell 16, the first heat exchanger tube 17 Diameter is greater than the diameter of the second heat exchanger tube 18, and the diameter of the second heat exchanger tube 18 is greater than the diameter of third heat exchanger tube, changes second It is provided with first filter 20 between heat pipe 18 and third heat exchanger tube, is provided between the first heat exchanger tube 17 and the second heat exchanger tube 18 Second filter 21, the top side of shell 16 are provided with air inlet 22, and the top other side of shell 16 is provided with water outlet 23, Water outlet 23 and third heat exchanger tube connection, the bottom end side of shell 16 is provided with water inlet 24, water inlet 24 and the first heat exchanger tube 17 connection, water inlet 24 and water outlet 23 and 13 connection of second circulation pipeline, the bottom end other side of shell 16 is provided with discharge outlet 25, discharge outlet 25 and 11 connection of second flow valve.

Seen from the above description, in the first heat exchanger tube 17 of the cold water first from the entrance of water inlet 24 with 24 connection of water inlet, Then, since the cold water in the first heat exchanger tube 17 is entered the second filter 21 by the circulating pump 15 for being set to second circulation pipeline 13 Interior filtering；Filtered cold water enters in the second heat exchanger tube 18 to be set between the second heat exchanger tube 18 and third heat exchanger tube 19 First filter 20 is crossed and is filtered again, and the impurity in cold water is avoided to cause line clogging to second circulation pipeline 13 in transport, Realize the effect that secondary filter is carried out to the cold water for entering heat regenerator 12；Filtered cold water enters third heat exchanger tube 19 again After interior, it is set the water outlet 23 in the 16 top other side of shell and flow to second circulation pipeline 13, pass through second circulation pipeline 13 Into water tank 14, heat regenerator is again introduced by water inlet 24 through second circulation pipeline 13 again into the water after water tank 14 In 12, to realize the water-flow circuit for forming closure between heat regenerator 12 and water tank 14；In the process of above-mentioned water circulation In, the high temperature and pressure ammonia steam of the second compressor 9 discharge enters recuperation of heat from the air inlet 22 for being set to 16 top side of shell In device 12, in shell 16 and mutually connection the first heat exchanger tube 17, the second heat exchanger tube 18 and third heat exchanger tube 19 with height Warm high pressure ammonia steam heat-exchanging, the first heat exchanger tube 17, the second heat exchanger tube 18 and third heat exchanger tube 19 change the cold water in shell 16 Heat, and then realize the effect to the cold water heating entered in heat regenerator 12；In addition, the diameter of the first heat exchanger tube 17 is greater than second The diameter of heat exchanger tube 18, the diameter of the second heat exchanger tube 18 are greater than the diameter of third heat exchanger tube 19, avoid 17 He of the first heat exchanger tube While second heat exchanger tube 18 blocks, pipe diameter minimum and close air inlet 22 due to third heat exchanger tube 19, The heat exchange area of unit volume is bigger, therefore the water heating temperature being located in third heat exchanger tube 19 is high, to further improve The heat transfer rate of water in into second circulation pipeline 13；And then realize the effect for improving the recuperation of heat utilization rate of heating unit 2.

A kind of steam-refrigerated exhaust heat recovering method, includes the following steps,

One, it is controlled to adjust by first flow valve 10 a part of high pressure superheater ammonia steam from the first compressor 4 is defeated It send into cooler 8, another part high pressure superheater ammonia steam of the first compressor 4 is delivered to evaporative condenser 5, through pressure reducing valve 7 and first circulation pipeline 6 formed refrigeration cycle；

Two, it is steamed into the washed ammonia for being cooled to liquefied ammonia and generating saturation overheat of the high pressure superheater ammonia steam in cooler 8 Vapour,

Three, the lower outlet side that liquefied ammonia after cooling passes through cooler 8 under gravity in step 2 drains into first and follows In endless tube road 6, liquefied ammonia after cooling is returned to after the decompression of pressure reducing valve 7 for ammonia device 3, further to recycle；

Four, after the outlet side discharge that saturation overheat ammonia steam passes through cooler 8 in step 2, through the second compressor 9 into one Step compression forms the ammonia steam of high pressure at higher temperature, then is delivered to heat regenerator 12；

Five, into the high temperature and pressure ammonia steam in heat regenerator 12 and the cold water from the entrance of the water inlet 24 of heat regenerator 12 It exchanges heat, high temperature and pressure ammonia steam forms the liquid ammonia of high pressure medium temperature, and cold water heat absorption is at hot water and passes through heat regenerator 12 Water outlet 23 be discharged, hot water through second circulation pipeline 13 enter water tank 14, through circulating pump 15 transport to heat regenerator 12 carry out into One step circulating-heating；

Six, after liquid ammonia is heated to the stabilization of the hot water temperature in second circulation pipeline 13, pass through and open second flow valve 11, high temperature and pressure ammonia steam and liquid ammonia in heat regenerator 12 by discharge outlet 25 enter cooler 8 again wash cooling at Liquefied ammonia and generate saturation overheat ammonia steam repeat step 3 to step 5 later.

Further: the first compressor 4 is low pressure compressor.

Seen from the above description, since the utilization rate of the first compressor 4 is high, the first compressor 4 is compressed using low pressure thus Machine, the durability long using the electrical machinery life of low pressure compressor, failure rate is extremely low and compressor is whole and high excellent of stability Point plays the role of guaranteeing refrigeration unit 1 and heating unit 2 can stablize and longtime running.

Further: the second compressor 9 is high pressure compressor.

Seen from the above description, high pressure compressor is used by the second compressor 9, it is axial using the receiving of high pressure compressor The ability of gas force is good, power consumption is lower, air-breathing preheats small and high volumetric efficiency advantage, plays and guarantees that heating unit 2 is stablized While operation, it is further reduced the effect of the loss of 2 energy of heating unit.

It is further: temperature sensor 26 to be provided in second circulation pipeline 13,26 electric signal of temperature sensor is connected with External temperature controller, second flow valve 11 are electromagnetic flow valve, and electromagnetic flow valve is connect with external temperature controller electric signal.

Seen from the above description, it is set in first circulation pipeline 6 when the hot water temperature in second circulation pipeline 13 reaches Temperature sensor 26 presetting stationary value when, temperature sensor 26 sends a signal to electric signal and is connected to temperature sensor 26 external temperature controller, the electromagnetic flow valve that external temperature controller control electric signal is connected to external temperature controller are beaten It opens, plays before the hot water in second circulation pipe reaches presetting stationary value, prevent the high temperature and pressure ammonia in heat regenerator 12 from steaming Vapour is flowed out from the lower discharge end of heat regenerator 12 through in pipeline to cooler 8, and causes the hot water heating speed in heat regenerator 12 The low effect of rate further realizes the function of improving the rate of heat addition of whole recuperation of heat utilization rate and cold water.

Further: the outer peripheral surface of second circulation pipeline 13 is equipped with insulating layer 27.

Seen from the above description, insulating layer 27 is arranged by the outer peripheral surface in second circulation pipeline 13, reduces hot water and is following Thermal loss caused by during ring plays the effect for being further ensured that recuperation of heat utilization rate is high.

It is further: liquid reservoir 28,28 input terminal of liquid reservoir are provided between evaporative condenser 5 and first circulation pipe With 5 connection of evaporative condenser, 28 output end of liquid reservoir and first circulation pipe connection.

Seen from the above description, the ammonia steam of high temperature and pressure is after evaporative condenser 5 is condensed into liquefied ammonia, and liquefied ammonia is from evaporation Formula condenser 5 is discharged into the liquid reservoir 28 being set between evaporative condenser 5 and first circulation pipe, avoids evaporating type condensing Accumulate heat-transfer effect that is excessive and influencing evaporative condenser 5 in device 5, plays liquefied ammonia after storage condensation, make evaporative condenser 5 Heat transfer area play one's part to the full；Meanwhile it preventing liquid refrigerant from entering the first compressor 4 and causing the problem of liquid hammer occur； Being further ensured that refrigeration unit 1 can run and the effect of high cooling efficiency steadily in the long term.

It is further: oil water separator 29 to be connected on first circulation pipeline 6, oil water separator 29 is located at 28 He of liquid reservoir Between pressure reducing valve 7, oil water separator 29 is between pressure reducing valve 7 and cooler 8.

Seen from the above description, by the oil water separator 29 being connected on first circulation pipeline 6, will be adulterated in liquefied ammonia from First compressor 4 and the lubricating oil of the second compressor 9 outflow are separated, to ensure that the pure of 1 liquefied ammonia of refrigeration unit circulation Degree and quality.

Referring to figs. 1 to shown in Fig. 2, embodiment one provided by the invention are as follows:

A kind of steam-refrigerated residual neat recovering system, as shown in Figure 1, including refrigeration unit 1 and heating unit 2, refrigeration unit 1 Including pass sequentially through pipeline connection for ammonia device 3, the first compressor 4 and evaporative condenser 5；Evaporative condenser 5 with For being connected with first circulation pipeline 6 between ammonia device 3, pressure reducing valve 7 is provided on first circulation pipeline 6；In evaporative condenser 5 Liquid reservoir 28,28 input terminal of liquid reservoir and 5 connection of evaporative condenser are provided between first circulation pipe, liquid reservoir 28 is defeated Outlet and first circulation pipe connection；Oil water separator 29 is connected on first circulation pipeline 6, oil water separator 29 is located at liquid reservoir 28 Between pressure reducing valve 7, oil water separator 29 is between pressure reducing valve 7 and cooler 8；First compressor 4 is low pressure compressor.

Heating unit 2 includes cooler 8, the second compressor 9, first flow valve 10, second flow valve 11, heat regenerator 12, second circulation pipeline 13 and water tank 14；The outlet side of first compressor 4 is connect with 10 one end pipeline of first flow valve, cooling The inlet end of device 8 is connect with 10 other end pipeline of first flow valve；The inlet end of the outlet side of cooler 8 and the second compressor 9 Connection；The outlet side of second compressor 9 is connect with the inlet end of heat regenerator 12；The water inlet end of heat regenerator 12, water outlet point Do not pass through 13 connection of second circulation pipeline with the water inlet end of water tank 14, water outlet, is provided with circulating pump on second circulation pipeline 13 15；Second compressor 9 is high pressure compressor.

As shown in Figure 1, the lower outlet side of cooler 8 and 6 connection of first circulation pipeline, the lower discharge end of heat regenerator 12, Second flow valve 11 and cooler 8 successively connection.

As depicted in figs. 1 and 2, heat regenerator 12 includes that shell 16, the first heat exchanger tube 17, the second heat exchanger tube 18 and third are changed Heat pipe 19；First heat exchanger tube 17, the second heat exchanger tube 18 and third heat exchanger tube 19 are respectively positioned on shell 16, and the first heat exchanger tube 17, the Two heat exchanger tubes 18 and third heat exchanger tube 19 successively connection；The diameter of first heat exchanger tube 17 is greater than the diameter of the second heat exchanger tube 18, the The diameter of two heat exchanger tubes 18 is greater than 19 diameters of third heat exchanger tube；It is set between the second heat exchanger tube 18 and third heat exchanger tube 19 It is equipped with first filter 20, the second filter 21 is provided between the first heat exchanger tube 17 and the second heat exchanger tube 18；

As depicted in figs. 1 and 2, the top side of shell 16 is provided with air inlet 22, the top other side setting of shell 16 There are water outlet 23, water outlet 23 and 19 connection of third heat exchanger tube, the bottom end side of shell 16 is provided with water inlet 24, water inlet 24 With 17 connection of the first heat exchanger tube, water inlet 24 and water outlet 23 and 13 connection of second circulation pipeline, the bottom end other side of shell 16 It is provided with discharge outlet 25, discharge outlet 25 and 11 connection of second flow valve；

As shown in Figure 1, being provided with temperature sensor 26 in second circulation pipeline 13,26 electric signal of temperature sensor is connected with External temperature controller (be not shown in the figure, in full as) second flow valve 11 is electromagnetic flow valve, electromagnetic flow valve and external The outer peripheral surface of the connection of temperature controller electric signal, second circulation pipeline 13 is equipped with insulating layer 27.

In conclusion the present invention is followed by first flow valve 10, cooler 8, the second compressor 9, heat regenerator 12, second Endless tube road 13 and water tank 14, using refrigeration unit 1 waste heat circulation heat water, avoid because condensation temperature it is excessively high caused by refrigeration unit High power consumption and the problem of low cooling, realization improves refrigerating efficiency and energy-efficient effect；Meanwhile passing through the second compression Machine 9 further heats up to ammonia steam, plays the heat recovery efficiency for improving heating unit 2；Pass through heat regenerator 12, second circulation The heat exchange cycle closed circuit that pipeline 13, circulating pump 15 and water tank 14 are formed, improves the rate of heat addition of cold water, meanwhile, heat is returned It is consistent with the water temperature of water tank 14 to receive device 12, second circulation pipeline 13, ensure that the stability of 14 leaving water temperature of water tank, play into one Step improves the effect of heat recovery rate；By the lower discharge end and 6 connection of first circulation pipeline of cooler 8, recycling is realized Liquefied ammonia after cooling, refrigerating efficiency, energy conservation and the function of environmental protection for improving refrigeration unit 1；By second flow valve 11, control is adjusted For a part of high temperature and pressure ammonia steam and liquid ammonia in section recycling heat regenerator 12 to cooler 8, realization further increases liquefied ammonia The rate of recovery and recuperation of heat utilization rate, reduce the consumption of the liquefied ammonia of total system, to reach further energy-efficient function.

The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment, All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.