CN105857155A

CN105857155A - Multi-partition logistics apparatus

Info

Publication number: CN105857155A
Application number: CN201610188289.3A
Authority: CN
Inventors: 时建华
Original assignee: 时建华
Current assignee: Jiangsu Haitao Amperex Technology Limited
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2016-08-17
Anticipated expiration: 2036-03-30
Also published as: CN105857155B

Abstract

The invention discloses a multi-partition logistics apparatus which comprises a compartment, a refrigerating unit, an evaporator and an engine energy recovery device. The compartment is sequentially divided into a freezing chamber, a refrigeration chamber and an insulating chamber through insulation boards front left to right. The refrigerating unit is mounted at the front end of the freezing chamber and used for refrigeration. The evaporator of the refrigerating unit is arranged in the freezing chamber and used for exchanging heat with air in the freezing chamber. Each insulation board is provided with an electrically controlled louver and used for controlling the temperatures in the three chambers by being matched with a solar heat collecting plate on the roof. The freezing chamber, the refrigeration chamber and the insulating chamber are each provided with a temperature sensor. The logistics apparatus is driven by an engine, and the engine energy recovery device is used for recovering heat of engine exhaust. The multi-partition logistics apparatus is simple in structure and practical and can transport objects while freezing and refrigerating the objects and keeping the objects fresh, and transporting quality is guaranteed; engine exhaust gas energy of the logistics apparatus can be secondarily utilized, so that energy is saved and environment is protected.

Description

A kind of multi-compartment logistics device

Technical field

The present invention relates to logistics field, be specifically related to a kind of multi-compartment logistics device.

Background technology

Along with the raising day by day of people's living standard, people are more and more higher to the requirement of food freshness, meat products, seafood, Veterinary antibiotics, milk etc. need to carry out freezing, refrigeration or fresh-keeping in transportation, in the compartment of traditional Cold Chain Logistics car Portion is an overall space, and in space or freezing, refrigeration or fresh-keeping, effectiveness is single, when transport difference preserves type During article, the single space in compartment cannot meet temperature required requirement；Meanwhile, existing logistic car there is also energy consumption large energy The problems such as secondary is under-utilized.

Summary of the invention

For the problems referred to above, the present invention provides a kind of multi-compartment logistics device.

The purpose of the present invention realizes by the following technical solutions:

A kind of multi-compartment logistics device, is characterized in that, including compartment, refrigeration unit, evaporimeter and engine power retracting device, Described compartment is divided into refrigerating chamber, refrigerating chamber and moist closet with thermal insulation board the most successively, and refrigeration unit is arranged on refrigerating chamber Front end is used for freezing, and the evaporimeter of refrigeration unit is arranged on inside refrigerating chamber, is used for and the air heat-exchange in refrigerating chamber；Each every The shutter of Electronic control it is provided with on hot plate, for coordinating the solar heat-collection plate of roof to control the temperature of 3 chambers, described It is provided with temperature sensor on refrigerating chamber, refrigerating chamber and moist closet；This logistics device is driven by engine, described in start function Amount retracting device is for reclaiming the heat of motor exhaust, and it includes that radiator, engine, backwater evaporimeter, high temperature heat exchange are returned Road, low-temperature heat exchange loop, batteries, inverter and frequency converter, backpressure regulation blower fan；Described radiator is connected with engine, Radiator leads to supercooled water to be transferred to the heat of engine on radiator, and by the surface radiating of radiator；The tail of engine Gas sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air；

High temperature heat-exchanging loop includes that the high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the high temperature that are sequentially connected are cold Condenser, in high temperature heat-exchanging loop, the medium of flowing is water, and high-temperature evaporator is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan On, the WATER AS FLOW MEDIUM cooled down through warm condenser is squeezed in high-temperature evaporator by high temperature circulation pump, and the WATER AS FLOW MEDIUM after heating subsequently enters High temperature multistage expansion turbine does work；

Low-temperature circulating pump that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer, intermediate extraction superheater, low temperature multistage are swollen Swollen machine and low-temperature condenser, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer is arranged on through high temperature evaporation On low temperature exhaust gas pipeline after device；Squeezed in cryogenic vaporizer through the medium R245fa of low-temperature condenser cooling by low-temperature circulating pump, WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage decompressor after intermediate extraction superheater heats；Intermediate extraction superheater is pipe Formula heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine；Also include regulating valve, described regulation valve root According to the R245fa temperature feedback after intermediate extraction superheater and the pressure feedback in high temperature multistage expansion turbine, it is used for regulating centre The flow that level is drawn gas, when the R245fa temperature feedback value after intermediate extraction superheater is overheated more than or less than the intermediate extraction set During R245fa temperature value after device, automatically turn down or open the big aperture regulating valve, simultaneously when in high temperature multistage expansion turbine When pressure feedback value is less than the pressure atresia value in the high temperature multistage expansion turbine set, automatic blocking regulation valve is opened, heating After intergrade draw gas and be back to high temperature recuperated cycle loop；Distance L between high-temperature evaporator and cryogenic vaporizer is tail gas row The 3/4 of feed channel overall length, high temperature multistage expansion turbine is 3 grades of decompressors, and intergrade is drawn gas and taken from the expansion of high temperature multistage turbine The 2nd grade of machine；

High-temperature evaporator and cryogenic vaporizer all use screen formula-spiral heat exchange tube, and the first half section in gas inlet side uses stagger arrangement cloth The screen formula heat exchanger tube put, second half section employing spiral heat exchange tube；Described engine also sets up on the CWR road of radiator Having backwater evaporimeter, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of low-temperature circulating pump, Centre tap after heated R245fa out returns to the porch of intermediate extraction superheater；Described high-temperature evaporator and low temperature steam Sending out device to be integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt fastening by procapsid and back casing, fore shell The length of body is identical with the horizontal length of screen formula heat exchanger tube, and the length of back casing is identical with the horizontal length of spiral heat exchange tube；Described Being provided with multiple vibrator on screen formula heat exchanger tube, vibrator is powered by batteries；The bottom of described procapsid is curved, at arc It is additionally provided with sewage draining exit at minimum point bottom shape, discharges the dirt fallen that shakes on screen formula heat exchanger tube for periodically；

Between low temperature multistage decompressor and high temperature multistage expansion turbine coaxially connected by shaft coupling, in system initial start stage, low R245fa in temperature heat-exchanging loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and first low temperature multistage decompressor starts, Drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, play the startup reducing high temperature multistage expansion turbine Pressure, shortens the effect of startup time；When system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, and passes through simultaneously Shaft coupling drives low temperature multistage decompressor to slow down, and to reduce the idling time of cryogenic expansion machine, plays reduction low temperature multistage decompressor Air blast friction, prevent the effect that blade is overheated；

Also include that batteries, inverter and frequency converter, one end of high temperature multistage expansion turbine are connected with batteries, electric power storage Pond group is for storing the electric energy being transformed by the kinetic energy of decompressor；Batteries is connected with inverter and frequency converter, and inverter is used In being alternating current by the DC inverter of battery, frequency converter is used for driving backpressure regulation blower fan and regulating its rotating speed；Backpressure regulation Blower fan is for lowering and control the back pressure of engine, and during operation, the pressure at expulsion feedback by detecting regulates backpressure regulation blower fan Rotating speed thus regulate back pressure in optimum value.

Preferably, described low temperature multistage decompressor and high temperature multistage expansion turbine are respectively by high temperature inlet valve and low temperature air inlet valve Regulating respective throttle flow, the high temperature inlet valve of employing and the stability of flow district of low temperature air inlet valve are 30%～100% metered flow, When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than 30% respective metered flow, high temperature inlet valve or low temperature enter vapour Valve keeps standard-sized sheet to avoid restriction loss, changes going out of decompressor by the rotating speed of regulation high temperature circulation pump or low-temperature circulating pump Power；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are less than 30% respective metered flow, holding high temperature circulation pump or The rotating speed of low-temperature circulating pump is constant, regulates exerting oneself of decompressor by the aperture controlling high temperature inlet valve or low temperature inlet valve.

The beneficial effect of this logistics device: this logistics device is simple and practical, can meet freezing, refrigeration, fresh-keeping article same Time transport, it is ensured that shipping mass；And its engine exhaust energy can utilize by secondary, energy-conserving and environment-protective；Devise the tail gas of engine Energy-recuperation system, according to the heat recovery demand of different temperatures section and the evaporating temperature of medium and the difference of heat transfer characteristic, High temperature section uses different circulatory mediators with low-temperature zone, thus improves the heat exchange efficiency of system on the whole；By by pressure relatively Low low-temperature circulating pump centre tap leads to the backwater of backwater evaporimeter cooling engine cooling water, it is possible to reclaiming engines tail Gas used heat reclaims the heat of cooling water simultaneously, and energy-saving effect is obvious；Redesign the screen that a kind of applicable tail gas heat exchange uses Formula-spiral heat exchange tube, was both convenient to clean, and added again heat exchange efficiency；By by part recover energy for by inverter and Transducer drive backpressure regulation blower fan, and the rotating speed of the feedback regulation backpressure regulation blower fan according to exhaust back pressure, realizing without outward By backpressure regulation and energy regenerating integration while boundary's power drives blower fan, it is greatly saved investment and space hold；Utilize height Temperature multistage expansion turbine intergrade draw gas, this part draw gas in high temperature multistage expansion turbine through one section of expansion Process, utilizes its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor, on the one hand can ensure that R245fa Effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve energy and return The whole efficiency of receiving apparatus；Pass through shaft coupling between low temperature multistage decompressor and high temperature multistage expansion turbine coaxially connected, be At the initial stage that system starts, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop arrives prior to the water in high temperature heat-exchanging loop Vapourizing temperature, first low temperature multistage decompressor starts, and drives high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, So can effectively reduce the startup pressure of high temperature multistage expansion turbine, shorten the startup time, when system stops, high temperature is many Level turbo-expander first coasting operation is slowed down, and drives low temperature multistage decompressor to slow down, to reduce cryogenic expansion machine by shaft coupling simultaneously Idling time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage swollen The air blast friction of swollen machine, prevents the effect that blade is overheated；According to inlet valve control characteristic and restriction loss under different flow rate working conditions Consideration, devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain regulation Stability.

Accompanying drawing explanation

The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention, for Those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains the attached of other according to the following drawings Figure.

Fig. 1 is the overall structure schematic diagram of this logistics device；

Fig. 2 is the structural representation of this energy recycle device；

Fig. 3 is the side view of high-temperature evaporator and cryogenic vaporizer；

Fig. 4 is the front view of high-temperature evaporator and cryogenic vaporizer.

Reference: radiator-1；Engine-2；Warm condenser-3；Low-temperature condenser-4；High-temperature evaporator-5；Low temperature steams Send out device-6；High temperature multistage expansion turbine-7；Low temperature multistage decompressor-8；Backwater evaporimeter-9；High temperature circulation pump-10；Low temperature Circulating pump-11；Intermediate extraction superheater-12；Batteries-13；Backpressure regulation blower fan-14；Inverter and frequency converter-15；Regulation Valve-16；Screen formula heat exchanger tube-17；Spiral heat exchange tube-18；Shaft coupling-19；Procapsid-20；Back casing-21；Bolt-22；Blowdown Mouth-23；Compartment-24；Refrigeration unit-25；Evaporimeter-26；Refrigerating chamber-27；Refrigerating chamber-28；Moist closet-29；Thermal insulation board-30； Shutter-31；Temperature sensor-32.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment 1:

A kind of multi-compartment logistics device as shown in Figure 1, including compartment 24, refrigeration unit 25, evaporimeter 26 with start function Amount retracting device, described compartment 24 is divided into refrigerating chamber 27, refrigerating chamber 28 and moist closet with thermal insulation board 30 the most successively 29, refrigeration unit 25 is arranged on the front end of refrigerating chamber 27 for freezing, and the evaporimeter 26 of refrigeration unit 25 is arranged on refrigerating chamber 27 is internal, is used for and the air heat-exchange in refrigerating chamber 27；It is provided with the shutter 31 of Electronic control on each thermal insulation board 30, uses The temperature of 3 chambers, described refrigerating chamber 27, refrigerating chamber 28 is controlled in the solar heat-collection plate (not shown) coordinating roof Be provided with temperature sensor 32 on moist closet 29；This logistics device is driven by engine 2.

As in figure 2 it is shown, engine power retracting device is for reclaiming the energy of engine 2 tail gas, it includes radiator 1, sends out Motivation 2, backwater evaporimeter 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries 13, inverter and frequency converter 15 and Backpressure regulation blower fan 14.Radiator 1 is connected with engine 2, and radiator 1 leads to supercooled water to be transferred to the heat of engine 2 On radiator 1, and by the surface radiating of radiator 1, engine 2 referred herein, could be for motor vehicle, ship The engine of the large-sized power machineries such as oceangoing ship.The tail gas of engine 2 sequentially passes through backpressure regulation blower fan 14, high-temperature evaporator 5, low Air is discharged after temperature evaporimeter 6 cooling.

High temperature circulation pump 10 that high temperature heat-exchanging loop includes being sequentially connected, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and Warm condenser 3, in high temperature heat-exchanging loop, the medium of flowing is water, after high-temperature evaporator 5 is arranged on backpressure regulation blower fan 14 On high-temperature tail gas pipeline, in order to cold in the WATER AS FLOW MEDIUM of warm condenser 3 cooling is squeezed into high-temperature evaporator 5 by high temperature circulation pump 10 But the tail gas of high-temperature tail gas section, the WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, converts heat energy into The mechanical energy of high temperature multistage expansion turbine 7.

Low-temperature circulating pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa temperature feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa temperature feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 3/4 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 3 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine.

As shown in Figure 3,4, it is contemplated that the impurity in tail gas be not easy to after more how long using cleaning is susceptible to blocking, and Take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 and all use the new structure of screen formula-spiral heat exchange tube, at tail gas Inlet side, use the screen formula heat exchanger tube 17 that is staggered in arrangement, the most most tail gas impurity is blocked in screen formula heat exchanger tube 17 On, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously；And use spiral heat exchange in the second half section Pipe 18, to strengthen flow perturbation raising heat exchange efficiency.Warm condenser 3 can take from air-conditioning refrigerant, it is also possible to takes from other Low-temperature receiver because the medium in heat-exchanging loop seldom, is re-cooled to liquid as long as can meet by the after-heat of this part Prevent high temperature circulation pump 10 and low-temperature circulating pump 11 from vaporizing.Described high-temperature evaporator 5 and cryogenic vaporizer 6 whole installation In the heat exchange housing of drum type brake, heat exchange housing is formed by bolt 22 fastening by procapsid 20 and back casing 21, procapsid The length of 20 is identical with the horizontal length of screen formula heat exchanger tube 17, the length of back casing 21 and the horizontal length of spiral heat exchange tube 18 Identical；Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by batteries 13； The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point of curved bottom, discharges screen for periodically Shake on formula heat exchanger tube 17 dirt fallen.

Engine 2 to the CWR road of radiator 1 is additionally provided with backwater evaporimeter 9, is used for reclaiming engine cold But the heat of water backwater, its cooling source takes from the centre tap of low-temperature circulating pump 11, heated after centre tap out R245fa returns to the porch of intermediate extraction superheater 12.The centre tap of low-temperature circulating pump 11 relatively low for pressure is led to back The backwater of water evaporimeter cooling engine cooling water, on the one hand can reclaim the heat of cooling water backwater well, on the other hand compare Individually set up a circulation or have the most energy-conservation from the outlet extraction cooling medium of low-temperature circulating pump 11 and high temperature circulation pump 10 Effect.

Pass through shaft coupling 19 between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 coaxially connected, start in system At the initial stage, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, First low temperature multistage decompressor 8 starts, and drives high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, this Sample can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shortens the startup time, due to now high temperature multistage turbine Medium temperature in decompressor 7 is the lowest, and the length of blade of high temperature multistage expansion turbine 7 is compared with the leaf of low temperature multiple expansion engine 8 Leaf length is little, and the air blast friction of blade is the least, almost can consider；When system stops, high temperature multistage expansion turbine 7 first coasting operation are slowed down, and drive low temperature multistage decompressor 8 to slow down, to reduce the lazy of cryogenic expansion machine 8 by shaft coupling 19 simultaneously Walk the time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage decompressor The air blast friction of 8, prevents the effect that blade is overheated.

One end of high temperature multistage expansion turbine 7 is connected with batteries 13, and batteries 13 is for storing by decompressor kinetic energy The electric energy being transformed.The technology of the electric energy of battery is converted energy into about decompressor, owing to prior art is the most ripe, Do not repeat them here.Batteries 13 is connected with inverter and frequency converter 15, and inverter is for by the DC inverter of battery For alternating current, frequency converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.The energy recycle device impact on engine 2 The exhaust back pressure of engine 2 can be made to raise when essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising Power consumption when can cause engine piston that waste gas is released cylinder increases, and therefore arranging backpressure regulation blower fan 14 can effectively lower also And the back pressure of control engine 2, during operation, regulated the rotating speed of backpressure regulation blower fan 14 by the pressure at expulsion feedback detected Thus regulating back pressure in optimum value, the most this energy utilizing batteries 13 itself is to outside driving the mode of blower fan need not The advantage of the power supply come.

Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 are respectively by high temperature inlet valve and low temperature air inlet valve (in figure not Illustrate) regulate respective throttle flow.The high temperature inlet valve used and the stability of flow district of low temperature air inlet valve are 30%～100% volume Constant flow, either low-temperature heat exchange loop or high temperature heat-exchanging loop, the control of pump and the control of decompressor, first pass through pump and adjust The flow of joint working medium, it is achieved to working medium control of temperature at expander inlet, decompressor must be made when flow changes Corresponding adjustment mates flow, if the operation of decompressor is not mated with flow, not only can not maintain stable evaporating pressure, The operation of decompressor also cannot keep stable, simultaneously according to high temperature inlet valve and the characteristic of low temperature inlet valve, use pressure regulation and Speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are more than 30% respective specified stream During amount, high temperature inlet valve or low temperature inlet valve holding standard-sized sheet are to avoid restriction loss, by regulation high temperature circulation pump 10 or low temperature The rotating speed of circulating pump 11 changes exerting oneself of decompressor；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are each less than 30% When metered flow, owing to the control characteristic of inlet valve during low discharge is unstable, keep high temperature circulation pump 10 or low-temperature circulating pump 11 rotating speeds are constant, regulate exerting oneself of decompressor by the aperture controlling high temperature inlet valve or low temperature inlet valve.

In the logistics device of this embodiment, simple and practical, transport while freezing, refrigeration, fresh-keeping article can be met, Ensure shipping mass；And its engine exhaust energy can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, Heat recovery demand according to different temperatures section and the evaporating temperature of medium and the difference of heat transfer characteristic, in high temperature section and low-temperature zone Use different circulatory mediators, thus improve the heat exchange efficiency of system on the whole；By by low-temperature circulating pump relatively low for pressure Centre tap leads to backwater evaporimeter 9 and cools down the backwater of engine cooling water, it is possible to return reclaiming motor exhaust used heat simultaneously Receive the heat of cooling water, and energy-saving effect is obvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, Both it was convenient to clean, added again heat exchange efficiency；By recovering energy part for driving the back of the body by inverter and frequency converter 15 Pressure regulation blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, realizing without extraneous power supply By integrated to backpressure regulation and energy regenerating while driving blower fan, it is greatly saved investment and space hold；Utilize high temperature multistage The intergrade of turbo-expander 7 is drawn gas, and drawing gas of this part is expanded through one section in high temperature multistage expansion turbine 7 Journey, utilizes its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, on the one hand can ensure that R245fa Effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve energy and return The whole efficiency of receiving apparatus；Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, At the initial stage that system starts, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop is prior to the water in high temperature heat-exchanging loop Arriving vapourizing temperature, first low temperature multistage decompressor starts, and drives high temperature multistage expansion turbine 7 low by shaft coupling 19 simultaneously Speed is pre-to be rotated, and so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, stop in system Time only, high temperature multistage expansion turbine 7 first coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, To reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is the highest, mainly Play the air blast friction reducing low temperature multistage decompressor 8, prevent the effect that blade is overheated；Vapour is entered according under different flow rate working conditions Valve regulation characteristic and the consideration of restriction loss, devise a kind of rotating speed and control mode that inlet valve combines, damage reducing throttling The stability of regulation is maintained while mistake.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road The 3/4 of overall length, high temperature multistage expansion turbine 7 is 3 grades of decompressors, and intergrade is drawn gas and taken from high temperature multistage expansion turbine 7 The 2nd grade, heat recovery efficiency improves 4%, achieves beyond thought effect.

Embodiment 2:

As in figure 2 it is shown, engine power retracting device is for reclaiming the energy of motor exhaust, it includes radiator 1, starts Machine 2, backwater evaporimeter 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, batteries 13, inverter and frequency converter 15 and the back of the body Pressure regulation blower fan 14.Radiator 1 is connected with engine 2, and radiator 1 leads to supercooled water to be transferred to dissipate by the heat of engine 2 On hot device 1, and by the surface radiating of radiator 1, engine 2 referred herein, could be for motor vehicle, boats and ships Engine Deng large-sized power machinery.The tail gas of engine 2 sequentially passes through backpressure regulation blower fan 14, high-temperature evaporator 5, low temperature Air is discharged after evaporimeter 6 cooling.

Low-temperature circulating pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa temperature feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa temperature feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 2/3 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 4 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine.

In the logistics device of this embodiment, simple and practical, transport while freezing, refrigeration, fresh-keeping article can be met, Ensure shipping mass；And its engine exhaust energy can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, Heat recovery demand according to different temperatures section and the evaporating temperature of medium and the difference of heat transfer characteristic, in high temperature section and low-temperature zone Use different circulatory mediators, thus improve the heat exchange efficiency of system on the whole；By by low-temperature circulating pump relatively low for pressure Centre tap leads to backwater evaporimeter 9 and cools down the backwater of engine cooling water, it is possible to return reclaiming motor exhaust used heat simultaneously Receive the heat of cooling water, and energy-saving effect is obvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, Both it was convenient to clean, added again heat exchange efficiency；By recovering energy part for driving the back of the body by inverter and frequency converter 15 Pressure regulation blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, realizing without extraneous power supply By integrated to backpressure regulation and energy regenerating while driving blower fan, it is greatly saved investment and space hold；Utilize high temperature multistage The intergrade of turbo-expander 7 is drawn gas, and drawing gas of this part is expanded through one section in high temperature multistage expansion turbine 7 Journey, utilizes its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, on the one hand can ensure that R245fa Effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve energy and return The whole efficiency of receiving apparatus；Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, At the initial stage that system starts, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop is prior to the water in high temperature heat-exchanging loop Arriving vapourizing temperature, first low temperature multistage decompressor starts, and drives high temperature multistage expansion turbine 7 low by shaft coupling 19 simultaneously Speed is pre-to be rotated, and so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, stop in system Time only, high temperature multistage expansion turbine 7 first coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, To reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is the highest, mainly Play the air blast friction reducing low temperature multistage decompressor 8, prevent the effect that blade is overheated；Vapour is entered according under different flow rate working conditions Valve regulation characteristic and the consideration of restriction loss, devise a kind of rotating speed and control mode that inlet valve combines, damage reducing throttling The stability of regulation is maintained while mistake.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road The 2/3 of overall length, high temperature multistage expansion turbine 7 is 4 grades of decompressors, and intergrade is drawn gas and taken from high temperature multistage expansion turbine 7 The 2nd grade, heat recovery efficiency improves 4.5%, achieves beyond thought effect.

Embodiment 3:

Low-temperature circulating pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa temperature feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa temperature feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 1/2 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 5 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine.

In the logistics device of this embodiment, simple and practical, transport while freezing, refrigeration, fresh-keeping article can be met, Ensure shipping mass；And its engine exhaust energy can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, Heat recovery demand according to different temperatures section and the evaporating temperature of medium and the difference of heat transfer characteristic, in high temperature section and low-temperature zone Use different circulatory mediators, thus improve the heat exchange efficiency of system on the whole；By by low-temperature circulating pump relatively low for pressure Centre tap leads to backwater evaporimeter 9 and cools down the backwater of engine cooling water, it is possible to return reclaiming motor exhaust used heat simultaneously Receive the heat of cooling water, and energy-saving effect is obvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, Both it was convenient to clean, added again heat exchange efficiency；By recovering energy part for driving the back of the body by inverter and frequency converter 15 Pressure regulation blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, realizing without extraneous power supply By integrated to backpressure regulation and energy regenerating while driving blower fan, it is greatly saved investment and space hold；Utilize high temperature multistage The intergrade of turbo-expander 7 is drawn gas, and drawing gas of this part is expanded through one section in high temperature multistage expansion turbine 7 Journey, utilizes its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, on the one hand can ensure that R245fa Effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve energy and return The whole efficiency of receiving apparatus；Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, At the initial stage that system starts, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop is prior to the water in high temperature heat-exchanging loop Arriving vapourizing temperature, first low temperature multistage decompressor starts, and drives high temperature multistage expansion turbine 7 low by shaft coupling 19 simultaneously Speed is pre-to be rotated, and so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, stop in system Time only, high temperature multistage expansion turbine 7 first coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, To reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is the highest, mainly Play the air blast friction reducing low temperature multistage decompressor 8, prevent the effect that blade is overheated；Vapour is entered according under different flow rate working conditions Valve regulation characteristic and the consideration of restriction loss, devise a kind of rotating speed and control mode that inlet valve combines, damage reducing throttling The stability of regulation is maintained while mistake.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road The 1/2 of overall length, high temperature multistage expansion turbine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from high temperature multistage expansion turbine 7 3rd level, heat recovery efficiency improves 5%, achieves beyond thought effect.

Embodiment 4:

Low-temperature circulating pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa temperature feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa temperature feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 2/5 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 5 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine.

In the logistics device of this embodiment, simple and practical, transport while freezing, refrigeration, fresh-keeping article can be met, Ensure shipping mass；And its engine exhaust energy can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, Heat recovery demand according to different temperatures section and the evaporating temperature of medium and the difference of heat transfer characteristic, in high temperature section and low-temperature zone Use different circulatory mediators, thus improve the heat exchange efficiency of system on the whole；By by low-temperature circulating pump relatively low for pressure Centre tap leads to backwater evaporimeter 9 and cools down the backwater of engine cooling water, it is possible to return reclaiming motor exhaust used heat simultaneously Receive the heat of cooling water, and energy-saving effect is obvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, Both it was convenient to clean, added again heat exchange efficiency；By recovering energy part for driving the back of the body by inverter and frequency converter 15 Pressure regulation blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, realizing without extraneous power supply By integrated to backpressure regulation and energy regenerating while driving blower fan, it is greatly saved investment and space hold；Utilize high temperature multistage The intergrade of turbo-expander 7 is drawn gas, and drawing gas of this part is expanded through one section in high temperature multistage expansion turbine 7 Journey, utilizes its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, on the one hand can ensure that R245fa Effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve energy and return The whole efficiency of receiving apparatus；Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, At the initial stage that system starts, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop is prior to the water in high temperature heat-exchanging loop Arriving vapourizing temperature, first low temperature multistage decompressor starts, and drives high temperature multistage expansion turbine 7 low by shaft coupling 19 simultaneously Speed is pre-to be rotated, and so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, stop in system Time only, high temperature multistage expansion turbine 7 first coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, To reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is the highest, mainly Play the air blast friction reducing low temperature multistage decompressor 8, prevent the effect that blade is overheated；Vapour is entered according under different flow rate working conditions Valve regulation characteristic and the consideration of restriction loss, devise a kind of rotating speed and control mode that inlet valve combines, damage reducing throttling The stability of regulation is maintained while mistake.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road The 2/5 of overall length, high temperature multistage expansion turbine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from high temperature multistage expansion turbine 7 The 2nd grade, heat recovery efficiency improves 5.5%, achieves beyond thought effect.

Embodiment 5:

Low-temperature circulating pump 11 that low-temperature heat exchange loop includes being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature Multiple expansion engine 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer 6 is arranged on To reclaim the heat of tail gas further on low temperature exhaust gas pipeline after high-temperature evaporator 5, through Jie of low-temperature condenser 6 cooling Matter R245fa is squeezed in cryogenic vaporizer 6 by low-temperature circulating pump 11, and the WATER AS FLOW MEDIUM after heating is after intermediate extraction superheater 12 Do work through low temperature multistage decompressor 8, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it has been investigated that, In energy recycle device, use water as medium and as the effect of medium and differ with R245fa, evaporation of water temperature Evaporating temperature than R245fa exceeds much, is therefore suitable in the tail gas section of high temperature using；And make in the tail gas section of low temperature With R245fa as medium, it is more beneficial for its evaporation acting.It addition, this under the conditions of different pressure and temperatures by both Medium is used in combination, and the most also can improve the heat exchange efficiency of system.Intermediate extraction superheater 12 is pipe heat exchanger, heating Thermal source draws gas from the intergrade of high temperature multistage expansion turbine 7, drawing gas at high temperature multistage expansion turbine 7 of this part Middle through one section of expansion process, utilize its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, one Aspect can ensure that effective vaporization of R245fa, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid low-temperature receiver damages Lose, thus improve the whole efficiency of energy recycle device.The concrete progression that draws gas can be according to the different operating modes in two decompressors Scope determines.Also include regulating valve 16, regulation valve 16 according to the R245fa temperature feedback after intermediate extraction superheater 12 and Pressure feedback in high temperature multistage expansion turbine 7, for regulating the flow that intergrade is drawn gas, when after intermediate extraction superheater 12 R245fa temperature feedback value more than or less than set intermediate extraction superheater 12 after R245fa temperature value time, automatically close Little or open the big aperture regulating valve 16, simultaneously when the pressure feedback value in high temperature multistage expansion turbine 7 is less than the high temperature set During pressure atresia value in multistage expansion turbine 7, automatic blocking regulation valve 16 opens greatly (i.e. forbidding that it continues out greatly), in case Stop exerting oneself of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and setting High temperature multistage expansion turbine 7 in pressure atresia value according to different concrete conditions by experiment method be manually set, add Intergrade after heat is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, high-temperature evaporator 5 is taken And 2/7 that distance L between cryogenic vaporizer 6 is exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 6 grades swollen Swollen machine, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine.

In the logistics device of this embodiment, simple and practical, transport while freezing, refrigeration, fresh-keeping article can be met, Ensure shipping mass；And its engine exhaust energy can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, Heat recovery demand according to different temperatures section and the evaporating temperature of medium and the difference of heat transfer characteristic, in high temperature section and low-temperature zone Use different circulatory mediators, thus improve the heat exchange efficiency of system on the whole；By by low-temperature circulating pump relatively low for pressure Centre tap leads to backwater evaporimeter 9 and cools down the backwater of engine cooling water, it is possible to return reclaiming motor exhaust used heat simultaneously Receive the heat of cooling water, and energy-saving effect is obvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, Both it was convenient to clean, added again heat exchange efficiency；By recovering energy part for driving the back of the body by inverter and frequency converter 15 Pressure regulation blower fan 14, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, realizing without extraneous power supply By integrated to backpressure regulation and energy regenerating while driving blower fan, it is greatly saved investment and space hold；Utilize high temperature multistage The intergrade of turbo-expander 7 is drawn gas, and drawing gas of this part is expanded through one section in high temperature multistage expansion turbine 7 Journey, utilizes its remaining heat to heat the medium R245fa before entering low temperature multistage decompressor 8, on the one hand can ensure that R245fa Effective vaporization, on the other hand can improve the mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve energy and return The whole efficiency of receiving apparatus；Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, At the initial stage that system starts, owing to exhaust temperature is relatively low, the R245fa in low-temperature heat exchange loop is prior to the water in high temperature heat-exchanging loop Arriving vapourizing temperature, first low temperature multistage decompressor starts, and drives high temperature multistage expansion turbine 7 low by shaft coupling 19 simultaneously Speed is pre-to be rotated, and so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, stop in system Time only, high temperature multistage expansion turbine 7 first coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down by shaft coupling 19 simultaneously, To reduce the idling time of cryogenic expansion machine 8, owing to the medium temperature in decompressor in stopped process is the highest, mainly Play the air blast friction reducing low temperature multistage decompressor 8, prevent the effect that blade is overheated；Vapour is entered according under different flow rate working conditions Valve regulation characteristic and the consideration of restriction loss, devise a kind of rotating speed and control mode that inlet valve combines, damage reducing throttling The stability of regulation is maintained while mistake.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road The 2/7 of overall length, high temperature multistage expansion turbine 7 is 6 grades of decompressors, and intergrade is drawn gas and taken from high temperature multistage expansion turbine 7 3rd level, heat recovery efficiency improves 6%, achieves beyond thought effect.

Last it should be noted that, above example is only in order to illustrate technical scheme, rather than to scope Restriction, although having made to explain to the present invention with reference to preferred embodiment, it will be understood by those within the art that, Technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.

Claims

1. a multi-compartment logistics device, is characterized in that, reclaims dress including compartment, refrigeration unit, evaporimeter and engine power Putting, described compartment is divided into refrigerating chamber, refrigerating chamber and moist closet with thermal insulation board the most successively, and refrigeration unit is arranged on freezing The front end of room is used for freezing, and the evaporimeter of refrigeration unit is arranged on inside refrigerating chamber, is used for and the air heat-exchange in refrigerating chamber；Often The shutter of Electronic control it is provided with on individual thermal insulation board, for coordinating the solar heat-collection plate of roof to control the temperature of 3 chambers, It is provided with temperature sensor on described refrigerating chamber, refrigerating chamber and moist closet；This logistics device is driven by engine, described in start Machine energy recycle device is for reclaiming the heat of motor exhaust, and it includes that radiator, engine, backwater evaporimeter, high temperature change Hot loop, low-temperature heat exchange loop, batteries, inverter and frequency converter, backpressure regulation blower fan；Described radiator and engine Being connected, radiator leads to supercooled water to be transferred to the heat of engine on radiator, and by the surface radiating of radiator；Start The tail gas of machine sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air；

A kind of multi-compartment logistics device the most according to claim 1, is characterized in that, described low temperature multistage decompressor and high temperature Multistage expansion turbine respectively by high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation, the high temperature inlet valve of employing and The stability of flow district of low temperature air inlet valve is 30%～100% metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow More than 30% during respective metered flow, high temperature inlet valve or low temperature inlet valve holding standard-sized sheet are to avoid restriction loss, by regulation height The rotating speed of temperature circulating pump or low-temperature circulating pump changes exerting oneself of decompressor；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle When flow is less than 30% respective metered flow, the rotating speed keeping high temperature circulation pump or low-temperature circulating pump is constant, enters by controlling high temperature The aperture of steam valve or low temperature inlet valve regulates exerting oneself of decompressor.