CN105803982A - Multifunctional environment maintenance device - Google Patents

Multifunctional environment maintenance device Download PDF

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Publication number
CN105803982A
CN105803982A CN201610188543.XA CN201610188543A CN105803982A CN 105803982 A CN105803982 A CN 105803982A CN 201610188543 A CN201610188543 A CN 201610188543A CN 105803982 A CN105803982 A CN 105803982A
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high temperature
temperature
low
expansion turbine
decompressor
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时建华
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
    • E01H1/0836Apparatus dislodging all of the dirt by suction ; Suction nozzles
    • E01H1/0845Apparatus dislodging all of the dirt by suction ; Suction nozzles with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention discloses a multifunctional environment maintenance device which comprises a vehicle body, a water tank, a rubbish accommodating tank, an electric rotating hairbrush, a dust collector, a solar battery, water spraying ports and an engine tail gas energy recycling system. The water tank and the rubbish accommodating tank are adjacently installed on the vehicle body. The electric rotating hairbrush and the dust collector which are powered by the solar battery of a vehicle top are installed at the bottom of the vehicle body. The plurality of water spraying ports are arranged on the two sides of the vehicle body, and water in the water tank is sprayed out of the water spraying ports through a water pump. The vehicle body is driven by an engine, and the engine tail gas energy recycling system is used for recycling energy of tail gas of the internal combustion engine. The environment maintenance device is simple and practical in structure, energy can be subject to secondary utilization, and the multifunctional environment maintenance device has functions of sweeping, dust collection and water spraying and the like and is high in mobility.

Description

A kind of Multifunctional environment attending device
Technical field
The present invention relates to urban environment field, be specifically related to a kind of Multifunctional environment attending device.
Background technology
Along with the continuous progress of society, the continuous expansion of urban planning, the cleaning situation of urban pavement has become as the major criterion evaluating a urban environment.Often there is function singleness in existing road-surface cleaning apparatus, energy consumption is high, itself uses explosive motor to have the defects such as certain exhaust emission.
Therefore, a kind of mobility of design is high, have the functions such as cleaning, dust suction, watering simultaneously, and the low road-surface cleaning apparatus of pollution-free energy consumption is a problem having very strong practical value.
Summary of the invention
For the problems referred to above, the present invention provides a kind of Multifunctional environment attending device.
The purpose of the present invention realizes by the following technical solutions:
A kind of Multifunctional environment attending device, including car body, water tank, garbage containing case, electronic rotation hairbrush, vacuum cleaner, solaode, water jet and energy of engine's tail gas recovery system, described water tank and garbage containing case are adjacent to be arranged on car body, the electronic rotation hairbrush of the solar cell for supplying power of roof and vacuum cleaner are arranged on the bottom of car body;Multiple water jets are arranged on two sides of car body, are sprayed from water jet by the water in water tank by water pump;Car body is driven by electromotor, engine power recovery system is for reclaiming the energy of motor exhaust, and it includes radiator, electromotor, backwater vaporizer, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery, inverter and converter, backpressure regulation blower fan;Described radiator is connected with electromotor, and the heat of electromotor is transferred on radiator by the logical supercooled water of radiator, and by the surface radiating of radiator;The tail gas of electromotor sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air;
High temperature heat-exchanging loop includes the high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the warm condenser that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan, 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 the acting of high temperature multistage expansion turbine;
Low-temperature heat exchange loop includes the cold cycle pump, cryogenic vaporizer, intermediate extraction superheater, low temperature multistage decompressor and the low-temperature condenser that are sequentially connected, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator;Being squeezed in cryogenic vaporizer through the medium R245fa of low-temperature condenser cooling by cold cycle pump, the WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage decompressor after intermediate extraction superheater heats;Intermediate extraction superheater is pipe heat exchanger, and heat source draws gas from the intergrade of high temperature multistage expansion turbine;Also include regulating valve, described adjustment valve is according to the R245fa Temperature Feedback after intermediate extraction superheater and the pressure feedback in high temperature multistage expansion turbine, for regulating the flow that intergrade is drawn gas, when the R245fa Temperature Feedback value after intermediate extraction superheater is more than or less than the R245fa temperature value after the intermediate extraction superheater set, automatically turn down or open the big aperture regulating valve, simultaneously when the pressure feedback value in high temperature multistage expansion turbine is less than the pressure atresia value in the high temperature multistage expansion turbine set, automatic blocking regulates valve and opens, intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop;Distance L between high-temperature evaporator and cryogenic vaporizer is the 3/4 of exhaust pipe road overall length, and high temperature multistage expansion turbine is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine;
High-temperature evaporator and cryogenic vaporizer all adopt screen formula-spiral heat exchange tube, and the first half section in gas inlet side adopts the screen formula heat exchanger tube being staggered in arrangement, and the second half section adopts spiral heat exchange tube;Described electromotor is additionally provided with backwater vaporizer to the CWR road of radiator, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater;Described high-temperature evaporator and cryogenic vaporizer are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt fastening by procapsid and back casing, the length of procapsid 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;Being provided with multiple vibrator on described screen formula heat exchanger tube, vibrator is powered by accumulator battery;The bottom of described procapsid is curved, is additionally provided with sewage draining exit at the minimum point place of curved bottom, discharges the dirt fallen that shakes on screen formula heat exchanger tube for regularly;
Shaft coupling is passed through coaxially connected between low temperature multistage decompressor and high temperature multistage expansion turbine, at the system start-up initial stage, 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 starts, drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, play the startup pressure reducing high temperature multistage expansion turbine, shorten the effect of startup time;When system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, and drives low temperature multistage decompressor to slow down by shaft coupling simultaneously, to reduce the idling time of cryogenic expansion machine, plays the air blast friction reducing low temperature multistage decompressor, it is prevented that the effect that blade is overheated;
Also including accumulator battery, inverter and converter, one end of high temperature multistage expansion turbine is connected with accumulator battery, and accumulator battery is for storing the electric energy being transformed by the kinetic energy of decompressor;Accumulator battery is connected with inverter and converter, and inverter is for being alternating current by the DC inverter of accumulator, and 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 electromotor, and during operation, the pressure at expulsion feedback by detecting regulates the rotating speed of backpressure regulation blower fan thus regulating back pressure in optimum.
Preferably, described low temperature multistage decompressor and high temperature multistage expansion turbine are respectively through high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation, the high temperature inlet valve adopted 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 during the respective metered flow more than 30%, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, change exerting oneself of decompressor by regulating the rotating speed of high temperature circulation pump or cold cycle pump;When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the rotating speed keeping high temperature circulation pump or cold cycle pump is constant, regulates exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
The beneficial effect of this environment maintenance device: this environment maintenance apparatus structure is simple and practical, energy can utilize by secondary, has the functions such as cleaning, dust suction and watering, and mobility is strong;Devise the off gas energy recovery system of electromotor, heat recovery demand according to different temperatures section and the difference of the evaporating temperature of medium and heat transfer characteristic, different circulatory mediators is adopted with low-temperature zone, thus improve the heat exchange efficiency of system on the whole in high temperature section;By cold cycle pump centre tap relatively low for pressure being led to the backwater of backwater evaporator cools engine cooling water, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water, and energy-saving effect is obvious simultaneously;Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be 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, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold;The intergrade utilizing high temperature multistage expansion turbine is drawn gas, this part draw gas in high temperature multistage expansion turbine through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device;Shaft coupling is passed through coaxially connected between low temperature multistage decompressor and high temperature multistage expansion turbine, initial stage in system start-up, owing to exhaust temperature is relatively low, 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 starts, drive 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, the first coasting operation of high temperature multistage expansion turbine is slowed down, drive low temperature multistage decompressor to slow down by shaft coupling simultaneously, to reduce the idling time of cryogenic expansion machine, owing to the medium temperature in decompressor in stopped process is also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor, prevent the effect that blade is overheated;According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.
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, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the following drawings.
Fig. 1 is the overall structure schematic diagram of this environment maintenance 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.
Accompanying drawing labelling: radiator-1;Electromotor-2;Warm condenser-3;Low-temperature condenser-4;High-temperature evaporator-5;Cryogenic vaporizer-6;High temperature multistage expansion turbine-7;Low temperature multistage decompressor-8;Backwater vaporizer-9;High temperature circulation pump-10;Cold cycle pump-11;Intermediate extraction superheater-12;Accumulator battery-13;Backpressure regulation blower fan-14;Inverter and converter-15;Regulate valve-16;Screen formula heat exchanger tube-17;Spiral heat exchange tube-18;Shaft coupling-19;Procapsid-20;Back casing-21;Bolt-22;Sewage draining exit-23;Car body-24;Water tank-25;Garbage containing case-26;Electronic rotation hairbrush-27;Vacuum cleaner-28;Solaode-29;Water jet-30.
Detailed description of the invention
The invention will be further described with the following Examples.
Embodiment 1:
A kind of Multifunctional environment attending device as shown in Figure 1, including car body 24, water tank 25, garbage containing case 26, electronic rotation hairbrush 27, vacuum cleaner 28, solaode 29, water jet 30 and energy of engine's tail gas recovery system, described water tank 25 and garbage containing case 26 are adjacent to be arranged on car body 24, the solaode 29 of roof the electronic rotation hairbrush 27 powered and vacuum cleaner 28 are arranged on the bottom of car body 24;Multiple water jets 30 are arranged on the both sides of car body 24, are sprayed from water jet 30 by the water in water tank 25 by water pump.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses;And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16,Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7,For regulating the flow that intergrade is drawn gas,When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set,Automatically turn down 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 pressure atresia value in the high temperature multistage expansion turbine 7 set,Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly),To prevent exerting oneself of high temperature multistage expansion turbine 7 too low,R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment,Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 3/4, high temperature multistage expansion turbine 7 is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously;And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided 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, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18;Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13;The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, 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, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider;When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive 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 also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%~100% metered flow,No matter it is 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 regulate the flow of working medium,Realize the working medium control in expander inlet place temperature,When flow changes, decompressor must be made adjusting accordingly and mate 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 remain stable for,Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously,Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%,High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss,Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11;When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the environment maintenance device of this embodiment, simple and practical, energy can utilize by secondary, has the functions such as cleaning, dust suction and watering, and mobility is strong;Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole;The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9;Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency;By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold;The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device;nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7,Initial stage in system start-up,Owing to exhaust temperature is relatively low,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 starts,Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously,So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7,Shorten the startup time,When system stops,High temperature multistage expansion turbine 7 first coasting operation is slowed down,Drive 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 also higher,Now primarily serve the air blast friction reducing low temperature multistage decompressor 8,Prevent the effect that blade is overheated;According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 3 grades of decompressors, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 4%, achieves beyond thought effect.
Embodiment 2:
A kind of Multifunctional environment attending device as shown in Figure 1, including car body 24, water tank 25, garbage containing case 26, electronic rotation hairbrush 27, vacuum cleaner 28, solaode 29, water jet 30 and energy of engine's tail gas recovery system, described water tank 25 and garbage containing case 26 are adjacent to be arranged on car body 24, the solaode 29 of roof the electronic rotation hairbrush 27 powered and vacuum cleaner 28 are arranged on the bottom of car body 24;Multiple water jets 30 are arranged on the both sides of car body 24, are sprayed from water jet 30 by the water in water tank 25 by water pump.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses;And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16,Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7,For regulating the flow that intergrade is drawn gas,When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set,Automatically turn down 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 pressure atresia value in the high temperature multistage expansion turbine 7 set,Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly),To prevent exerting oneself of high temperature multistage expansion turbine 7 too low,R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment,Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 2/3, high temperature multistage expansion turbine 7 is 4 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously;And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided 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, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18;Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13;The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, 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, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider;When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive 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 also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%~100% metered flow,No matter it is 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 regulate the flow of working medium,Realize the working medium control in expander inlet place temperature,When flow changes, decompressor must be made adjusting accordingly and mate 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 remain stable for,Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously,Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%,High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss,Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11;When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the environment maintenance device of this embodiment, simple and practical, energy can utilize by secondary, has the functions such as cleaning, dust suction and watering, and mobility is strong;Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole;The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9;Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency;By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold;The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device;nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7,Initial stage in system start-up,Owing to exhaust temperature is relatively low,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 starts,Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously,So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7,Shorten the startup time,When system stops,High temperature multistage expansion turbine 7 first coasting operation is slowed down,Drive 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 also higher,Now primarily serve the air blast friction reducing low temperature multistage decompressor 8,Prevent the effect that blade is overheated;According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/3 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 4 grades of decompressors, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 4.5%, achieves beyond thought effect.
Embodiment 3:
A kind of Multifunctional environment attending device as shown in Figure 1, including car body 24, water tank 25, garbage containing case 26, electronic rotation hairbrush 27, vacuum cleaner 28, solaode 29, water jet 30 and energy of engine's tail gas recovery system, described water tank 25 and garbage containing case 26 are adjacent to be arranged on car body 24, the solaode 29 of roof the electronic rotation hairbrush 27 powered and vacuum cleaner 28 are arranged on the bottom of car body 24;Multiple water jets 30 are arranged on the both sides of car body 24, are sprayed from water jet 30 by the water in water tank 25 by water pump.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses;And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16,Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7,For regulating the flow that intergrade is drawn gas,When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set,Automatically turn down 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 pressure atresia value in the high temperature multistage expansion turbine 7 set,Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly),To prevent exerting oneself of high temperature multistage expansion turbine 7 too low,R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment,Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 1/2, high temperature multistage expansion turbine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously;And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided 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, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18;Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13;The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, 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, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider;When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive 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 also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%~100% metered flow,No matter it is 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 regulate the flow of working medium,Realize the working medium control in expander inlet place temperature,When flow changes, decompressor must be made adjusting accordingly and mate 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 remain stable for,Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously,Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%,High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss,Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11;When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the environment maintenance device of this embodiment, simple and practical, energy can utilize by secondary, has the functions such as cleaning, dust suction and watering, and mobility is strong;Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole;The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9;Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency;By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold;The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device;nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7,Initial stage in system start-up,Owing to exhaust temperature is relatively low,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 starts,Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously,So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7,Shorten the startup time,When system stops,High temperature multistage expansion turbine 7 first coasting operation is slowed down,Drive 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 also higher,Now primarily serve the air blast friction reducing low temperature multistage decompressor 8,Prevent the effect that blade is overheated;According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 1/2 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 5 grades of decompressors, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 5%, achieves beyond thought effect.
Embodiment 4:
A kind of Multifunctional environment attending device as shown in Figure 1, including car body 24, water tank 25, garbage containing case 26, electronic rotation hairbrush 27, vacuum cleaner 28, solaode 29, water jet 30 and energy of engine's tail gas recovery system, described water tank 25 and garbage containing case 26 are adjacent to be arranged on car body 24, the solaode 29 of roof the electronic rotation hairbrush 27 powered and vacuum cleaner 28 are arranged on the bottom of car body 24;Multiple water jets 30 are arranged on the both sides of car body 24, are sprayed from water jet 30 by the water in water tank 25 by water pump.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses;And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16,Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7,For regulating the flow that intergrade is drawn gas,When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set,Automatically turn down 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 pressure atresia value in the high temperature multistage expansion turbine 7 set,Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly),To prevent exerting oneself of high temperature multistage expansion turbine 7 too low,R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment,Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 2/5, high temperature multistage expansion turbine 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously;And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided 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, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18;Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13;The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, 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, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider;When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive 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 also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%~100% metered flow,No matter it is 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 regulate the flow of working medium,Realize the working medium control in expander inlet place temperature,When flow changes, decompressor must be made adjusting accordingly and mate 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 remain stable for,Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously,Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%,High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss,Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11;When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the environment maintenance device of this embodiment, simple and practical, energy can utilize by secondary, has the functions such as cleaning, dust suction and watering, and mobility is strong;Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole;The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9;Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency;By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold;The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device;nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7,Initial stage in system start-up,Owing to exhaust temperature is relatively low,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 starts,Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously,So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7,Shorten the startup time,When system stops,High temperature multistage expansion turbine 7 first coasting operation is slowed down,Drive 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 also higher,Now primarily serve the air blast friction reducing low temperature multistage decompressor 8,Prevent the effect that blade is overheated;According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/5 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 5 grades of decompressors, intergrade is drawn gas and is taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 5.5%, achieves beyond thought effect.
Embodiment 5:
A kind of Multifunctional environment attending device as shown in Figure 1, including car body 24, water tank 25, garbage containing case 26, electronic rotation hairbrush 27, vacuum cleaner 28, solaode 29, water jet 30 and energy of engine's tail gas recovery system, described water tank 25 and garbage containing case 26 are adjacent to be arranged on car body 24, the solaode 29 of roof the electronic rotation hairbrush 27 powered and vacuum cleaner 28 are arranged on the bottom of car body 24;Multiple water jets 30 are arranged on the both sides of car body 24, are sprayed from water jet 30 by the water in water tank 25 by water pump.
As shown in Figure 2, engine power recovery system is for reclaiming the energy of automobile engine tail gas, and it includes radiator 1, electromotor 2, backwater vaporizer 9, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery 13, inverter and converter 15 and backpressure regulation blower fan 14.Radiator 1 is connected with electromotor 2, and radiator 1 leads to supercooled water to be transferred to the heat of electromotor 2 on radiator 1, and by the surface radiating of radiator 1.The tail gas of electromotor 2 discharges air after sequentially passing through backpressure regulation blower fan 14, high-temperature evaporator 5, cryogenic vaporizer 6 cooling.
High temperature heat-exchanging loop includes the high temperature circulation pump 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and the warm condenser 3 that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator 5 is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan 14, the tail gas in order to cooling down high-temperature tail gas section is squeezed in high-temperature evaporator 5 by high temperature circulation pump 10 through the WATER AS FLOW MEDIUM of warm condenser 3 cooling, WATER AS FLOW MEDIUM after heating then passes through high temperature multistage expansion turbine 7 and does work, and converts heat energy into the mechanical energy of high temperature multistage expansion turbine 7.
Low-temperature heat exchange loop includes the cold cycle pump 11 being sequentially connected, cryogenic vaporizer 6, intermediate extraction superheater 12, low temperature multistage decompressor 8 and low-temperature condenser 4, in low-temperature heat exchange loop, the medium of flowing is R245fa, cryogenic vaporizer 6 is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator 5 to reclaim the heat of tail gas further, squeezed in cryogenic vaporizer 6 through the medium R245fa of low-temperature condenser 6 cooling by cold cycle pump 11, WATER AS FLOW MEDIUM after heating is done work through low temperature multiple expansion engine 8 after intermediate extraction superheater 12, convert heat energy into the mechanical energy of low temperature multistage decompressor 8.Inventor it have been investigated that, in energy recycle device, use water as medium and by the R245fa effect as medium and differ, the evaporation of water temperature evaporating temperature than R245fa exceeds much, is therefore adapted in the tail gas section of high temperature and uses;And use R245fa as medium in the tail gas section of low temperature, it is more beneficial for its evaporation acting.It addition, this combination by both media when different pressure and temperatures uses, the heat exchange efficiency of system also can be improved on the whole.Intermediate extraction superheater 12 is pipe heat exchanger, heat source draws gas from the intergrade of high temperature multistage expansion turbine 7, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, it is to avoid cold source energy, thus improving the whole efficiency of energy recycle device.The concrete progression that draws gas can be determined according to the different condition ranges in two decompressors.nullAlso include regulating valve 16,Regulate valve 16 according to the R245fa Temperature Feedback after intermediate extraction superheater 12 and the pressure feedback in high temperature multistage expansion turbine 7,For regulating the flow that intergrade is drawn gas,When the R245fa Temperature Feedback value after intermediate extraction superheater 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 set,Automatically turn down 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 pressure atresia value in the high temperature multistage expansion turbine 7 set,Automatic blocking regulates valve 16 and opens greatly (namely forbidding that it continues out greatly),To prevent exerting oneself of high temperature multistage expansion turbine 7 too low,R245fa temperature value after the intermediate extraction superheater 12 set and the pressure atresia value in the high temperature multistage expansion turbine 7 of setting are manually set according to different concrete conditions method by experiment,Intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop (not shown).In this embodiment, take that the distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is exhaust pipe road overall length 2/7, high temperature multistage expansion turbine 7 is 6 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine.
As shown in Figure 3,4, consider the impurity in tail gas is not easy to cleaning and is susceptible to blocking after more how long using, and take into account heat exchange efficiency, high-temperature evaporator 5 and cryogenic vaporizer 6 all adopt the new structure of screen formula-spiral heat exchange tube, at the inlet side of tail gas, adopting the screen formula heat exchanger tube 17 being staggered in arrangement, so most tail gas impurity is blocked on screen formula heat exchanger tube 17, during cleaning easily, it is staggered in arrangement the flow resistance that also can effectively reduce tail gas simultaneously;And adopt spiral heat exchange tube 18 in the second half section, to strengthen flow perturbation raising heat exchange efficiency.The cooling source of warm condenser 3 and low-temperature condenser 4 can take from air-conditioning refrigerant, other low-temperature receiver can also be taken from, because the after-heat of this part is seldom, the medium in heat-exchanging loop is re-cooled to liquid prevents high temperature circulation pump 10 and cold cycle pump 11 from vaporizing as long as can meet.Described high-temperature evaporator 5 and cryogenic vaporizer 6 are integrally provided 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, the length of procapsid 20 is identical with the horizontal length of screen formula heat exchanger tube 17, and the length of back casing 21 is identical with the horizontal length of spiral heat exchange tube 18;Being provided with multiple vibrator (not shown) on described screen formula heat exchanger tube 17, vibrator is powered by accumulator battery 13;The bottom of described procapsid 20 is curved, is additionally provided with sewage draining exit 23 at the minimum point place of curved bottom, for regularly discharging the dirt fallen that shakes on screen formula heat exchanger tube 17.
Electromotor 2 to the CWR road of radiator 1 is additionally provided with backwater vaporizer 9, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump 11, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater 12.The centre tap of cold cycle pump 11 relatively low for pressure is led to the backwater of backwater evaporator cools engine cooling water, reclaiming the heat of cooling water backwater on the one hand well, comparing on the other hand individually to set up a circulation or draw cooling medium from the outlet of cold cycle pump 11 and high temperature circulation pump 10 has better energy-saving effect.
Shaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7, initial stage in system start-up, owing to exhaust temperature is relatively low, 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, drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce the startup pressure of high temperature multistage expansion turbine 7, shorten the startup time, owing to the medium temperature in now high temperature multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is little compared with the length of blade of low temperature multiple expansion engine 8, the air blast friction of blade is only small, almost can consider;When system stops, high temperature multistage expansion turbine 7 first coasting operation is slowed down, drive 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 also higher, now primarily serve the air blast friction reducing low temperature multistage decompressor 8, it is prevented that the effect that blade is overheated.
One end of high temperature multistage expansion turbine 7 is connected with accumulator battery 13, and accumulator battery 13 is for storing the electric energy being transformed by decompressor kinetic energy.Convert energy into the technology of the electric energy of accumulator about decompressor, owing to prior art is very ripe, do not repeat them here.Accumulator battery 13 is connected with inverter and converter 15, and inverter is for being alternating current by the DC inverter of accumulator, and converter is used for driving backpressure regulation blower fan 14 and regulating its rotating speed.Energy recycle device can make the exhaust back pressure of electromotor 2 raise when the impact of electromotor 2 essentially consisting in engine exhaust by heater in system, and exhaust back pressure rising can cause that power consumption when waste gas is released cylinder by engine piston increases, therefore backpressure regulation blower fan 14 is set and can effectively lower and control the back pressure of electromotor 2, during operation, the rotating speed of backpressure regulation blower fan 14 is regulated thus regulating back pressure in optimum by the pressure at expulsion feedback detected, the advantage that this energy utilizing accumulator battery 13 itself has power supply that need not be external to drive the mode of blower fan simultaneously.
Low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7 regulate respective throttle flow respectively through high temperature inlet valve and low temperature air inlet valve (not shown).nullThe high temperature inlet valve adopted and the stability of flow district of low temperature air inlet valve are 30%~100% metered flow,No matter it is 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 regulate the flow of working medium,Realize the working medium control in expander inlet place temperature,When flow changes, decompressor must be made adjusting accordingly and mate 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 remain stable for,Characteristic according to high temperature inlet valve and low temperature inlet valve simultaneously,Adopt pressure to regulate and speed regulates the control mode matched: when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow more than 30%,High temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss,Exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump 10 or cold cycle pump 11;When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the control characteristic of inlet valve during due to low discharge is unstable, keep high temperature circulation pump 10 or cold cycle pump 11 rotating speed constant, regulate exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
In the environment maintenance device of this embodiment, simple and practical, energy can utilize by secondary, has the functions such as cleaning, dust suction and watering, and mobility is strong;Devise the exhaust gas recovery system of electromotor, the difference according to the evaporating temperature of the heat recovery demand of different temperatures section and medium and heat transfer characteristic, adopt different circulatory mediators in high temperature section with low-temperature zone, thus improve the heat exchange efficiency of system on the whole;The backwater of engine cooling water is cooled down, it is possible to reclaim, reclaiming motor exhaust used heat, the heat cooling down water simultaneously, and energy-saving effect is obvious by cold cycle pump centre tap relatively low for pressure is led to backwater vaporizer 9;Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency;By by part recover energy for driving backpressure regulation blower fan 14 by inverter and converter 15, and the rotating speed of the feedback regulation backpressure regulation blower fan 14 according to exhaust back pressure, by backpressure regulation and energy regenerating integration while realizing without driven by external power blower fan, it is greatly saved investment and space hold;The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this part draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, its remaining heat is utilized to heat the medium R245fa before entering low temperature multistage decompressor 8, can ensure that effective vaporization of R245fa on the one hand, the mechanical efficiency in low-temperature expansion loop can be improved on the other hand, avoid cold source energy, thus improving the whole efficiency of energy recycle device;nullShaft coupling 19 is passed through coaxially connected between low temperature multistage decompressor 8 and high temperature multistage expansion turbine 7,Initial stage in system start-up,Owing to exhaust temperature is relatively low,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 starts,Drive high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously,So can effectively reduce the startup pressure of high temperature multistage expansion turbine 7,Shorten the startup time,When system stops,High temperature multistage expansion turbine 7 first coasting operation is slowed down,Drive 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 also higher,Now primarily serve the air blast friction reducing low temperature multistage decompressor 8,Prevent the effect that blade is overheated;According to the consideration of inlet valve control characteristic and restriction loss under different flow rate working conditions, devise a kind of rotating speed and control mode that inlet valve combines, reducing the stability being maintained with regulating of restriction loss.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/7 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 6 grades of decompressors, intergrade is drawn gas and is taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency improves 6%, achieves beyond thought effect.
Finally should be noted that; above example is only in order to illustrate technical scheme; but not limiting the scope of the invention; 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 replacement, without deviating from the spirit and scope of technical solution of the present invention.

Claims (2)

1. a Multifunctional environment attending device, it is characterized in that, including car body, water tank, garbage containing case, electronic rotation hairbrush, vacuum cleaner, solaode, water jet and energy of engine's tail gas recovery system, described water tank and garbage containing case are adjacent to be arranged on car body, the electronic rotation hairbrush of the solar cell for supplying power of roof and vacuum cleaner are arranged on the bottom of car body;Multiple water jets are arranged on the both sides of car body, are sprayed from water jet by the water in water tank by water pump;Car body is driven by electromotor, engine power recovery system is for reclaiming the energy of motor exhaust, and it includes radiator, electromotor, backwater vaporizer, high temperature heat-exchanging loop, low-temperature heat exchange loop, accumulator battery, inverter and converter, backpressure regulation blower fan;Described radiator is connected with electromotor, and the heat of electromotor is transferred on radiator by the logical supercooled water of radiator, and by the surface radiating of radiator;The tail gas of electromotor sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air;
High temperature heat-exchanging loop includes the high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the warm condenser that are sequentially connected, in high temperature heat-exchanging loop, the medium of flowing is water, high-temperature evaporator is arranged on the high-temperature tail gas pipeline after backpressure regulation blower fan, 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 the acting of high temperature multistage expansion turbine;
Low-temperature heat exchange loop includes the cold cycle pump, cryogenic vaporizer, intermediate extraction superheater, low temperature multistage decompressor and the low-temperature condenser that are sequentially connected, in low-temperature heat exchange loop, the medium of flowing is R245fa, and cryogenic vaporizer is arranged on the low temperature exhaust gas pipeline after high-temperature evaporator;Being squeezed in cryogenic vaporizer through the medium R245fa of low-temperature condenser cooling by cold cycle pump, the WATER AS FLOW MEDIUM after heating enters the acting of low temperature multistage decompressor after intermediate extraction superheater heats;Intermediate extraction superheater is pipe heat exchanger, and heat source draws gas from the intergrade of high temperature multistage expansion turbine;Also include regulating valve, described adjustment valve is according to the R245fa Temperature Feedback after intermediate extraction superheater and the pressure feedback in high temperature multistage expansion turbine, for regulating the flow that intergrade is drawn gas, when the R245fa Temperature Feedback value after intermediate extraction superheater is more than or less than the R245fa temperature value after the intermediate extraction superheater set, automatically turn down or open the big aperture regulating valve, simultaneously when the pressure feedback value in high temperature multistage expansion turbine is less than the pressure atresia value in the high temperature multistage expansion turbine set, automatic blocking regulates valve and opens, intergrade after heating is drawn gas and is back to high temperature recuperated cycle loop;Distance L between high-temperature evaporator and cryogenic vaporizer is the 3/4 of exhaust pipe road overall length, and high temperature multistage expansion turbine is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine;
High-temperature evaporator and cryogenic vaporizer all adopt screen formula-spiral heat exchange tube, and the first half section in gas inlet side adopts the screen formula heat exchanger tube being staggered in arrangement, and the second half section adopts spiral heat exchange tube;Described electromotor is additionally provided with backwater vaporizer to the CWR road of radiator, for reclaiming the heat of engine cooling water backwater, its cooling source takes from the centre tap of cold cycle pump, and the R245fa out of the centre tap after heated returns to the porch of intermediate extraction superheater;Described high-temperature evaporator and cryogenic vaporizer are integrally provided in the heat exchange housing of drum type brake, heat exchange housing is formed by bolt fastening by procapsid and back casing, the length of procapsid 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;Being provided with multiple vibrator on described screen formula heat exchanger tube, vibrator is powered by accumulator battery;The bottom of described procapsid is curved, is additionally provided with sewage draining exit at the minimum point place of curved bottom, discharges the dirt fallen that shakes on screen formula heat exchanger tube for regularly;
Shaft coupling is passed through coaxially connected between low temperature multistage decompressor and high temperature multistage expansion turbine, at the system start-up initial stage, 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 starts, drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, play the startup pressure reducing high temperature multistage expansion turbine, shorten the effect of startup time;When system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, and drives low temperature multistage decompressor to slow down by shaft coupling simultaneously, to reduce the idling time of cryogenic expansion machine, plays the air blast friction reducing low temperature multistage decompressor, it is prevented that the effect that blade is overheated;
Also including accumulator battery, inverter and converter, one end of high temperature multistage expansion turbine is connected with accumulator battery, and accumulator battery is for storing the electric energy being transformed by the kinetic energy of decompressor;Accumulator battery is connected with inverter and converter, and inverter is for being alternating current by the DC inverter of accumulator, and 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 electromotor, and during operation, the pressure at expulsion feedback by detecting regulates the rotating speed of backpressure regulation blower fan thus regulating back pressure in optimum.
2. a kind of Multifunctional environment attending device according to claim 1, it is characterized in that, described low temperature multistage decompressor and high temperature multistage expansion turbine are respectively through high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation, the high temperature inlet valve adopted 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 during the respective metered flow more than 30%, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, exerting oneself of decompressor is changed by regulating the rotating speed of high temperature circulation pump or cold cycle pump;When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow during the respective metered flow less than 30%, the rotating speed keeping high temperature circulation pump or cold cycle pump is constant, regulates exerting oneself of decompressor by controlling the aperture of high temperature inlet valve or low temperature inlet valve.
CN201610188543.XA 2016-03-30 2016-03-30 Multifunctional environment maintenance device Pending CN105803982A (en)

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