CN105781645B

CN105781645B - A kind of waste conveyor

Info

Publication number: CN105781645B
Application number: CN201610188321.8A
Authority: CN
Inventors: 时建华
Original assignee: Taizhou Haixing Environmental Protection Equipment Installation Co Ltd
Current assignee: Taizhou Haixing environmental protection equipment installation Co., Ltd.
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2018-11-27
Anticipated expiration: 2036-03-30
Also published as: CN105781645A

Abstract

The invention discloses a kind of waste conveyor, including car body, refuse hopper, first mechanical arm, second mechanical arm, hydraulic stem and engine system, the car body, first mechanical arm, second mechanical arm and refuse hopper are successively hinged and connected；Multiple hydraulic stems are sequentially arranged between car body and first mechanical arm, between first mechanical arm and second mechanical arm, between second mechanical arm and refuse hopper, for driving first mechanical arm, second mechanical arm and refuse hopper movement；The car body is used to recycle the energy of motor exhaust by engine driving, transmitter off gas energy recovery device.The waste conveyor is simple and practical in structure, and conveying is convenient, and mobility is strong, energy can secondary use, energy conservation and environmental protection.

Description

A kind of waste conveyor

Technical field

The present invention relates to field of garbage disposal, and in particular to a kind of waste conveyor.

Background technique

Rubbish conveying is a most basic link of garbage disposal, and existing rubbish mode of movement substantially has belt defeated It send, mechanical arm conveying, the modes such as elevator delivery.But no matter which kind of mode is used, power saving during transportation is still It is people's major issue of concern.When especially with the conveying of vehicle cooperative mechanical arm, it is discharged in addition to vehicle itself The problems such as exhaust gas causes outside environmental pollution, and that there is also energy consumptions is larger, structure is more complicated, energy secondary recycling is insufficient.

Summary of the invention

In view of the above-mentioned problems, the present invention provides a kind of waste conveyor.

The purpose of the present invention is realized using following technical scheme：

A kind of waste conveyor, characterized in that including car body, refuse hopper, first mechanical arm, second mechanical arm, hydraulic Bar and engine system, the car body, first mechanical arm, second mechanical arm and refuse hopper are successively hinged and connected；Multiple liquid Compression bar is sequentially arranged between car body and first mechanical arm, between first mechanical arm and second mechanical arm, second mechanical arm and rubbish Between rubbish bucket, for driving first mechanical arm, second mechanical arm and refuse hopper movement；The car body is started by engine driving Tail gas energy recyclable device is used to recycle the energy of motor exhaust comprising radiator, engine, return water evaporator, height Warm heat-exchanging loop, low-temperature heat exchange circuit, battery group, inverter and frequency converter, backpressure regulation blower；The radiator with start Machine is connected, the surface radiating that the heat of engine is transferred on radiator by cooling water, and passes through radiator by radiator；Hair The tail gas of motivation successively passes through the cooling heel row of backpressure regulation blower, high-temperature evaporator, cryogenic vaporizer to atmosphere；

High temperature heat-exchanging loop include the high temperature circulation pump being sequentially connected, high-temperature evaporator, high temperature multistage expansion turbine and Warm condenser, the interior medium flowed of high temperature heat-exchanging loop is water, and high-temperature evaporator is mounted on the high temperature after backpressure regulation blower On exhaust pipe, squeezed into high-temperature evaporator through the cooling medium water of warm condenser by high temperature circulation pump, the medium after heating Water subsequently enters the acting of high temperature multistage expansion turbine；

Low-temperature heat exchange circuit includes that the low-temperature circulating pump, cryogenic vaporizer, intermediate extraction superheater, the low temperature that are sequentially connected are more Grade expanding machine and low-temperature condenser, the medium of flowing is R245fa in low-temperature heat exchange circuit, and cryogenic vaporizer is mounted on through excessively high On low temperature exhaust gas pipeline after warm evaporator；Low temperature is squeezed by low-temperature circulating pump through the cooling medium R245fa of low-temperature condenser to steam It sends out in device, the R245fa after heating enters low temperature multistage expanding machine after the heating of intermediate extraction superheater and does work；Intermediate extraction Superheater is pipe heat exchanger, intergrade steam extraction of the heat source from high temperature multistage expansion turbine；It further include regulating valve, institute Regulating valve is stated according to the pressure feedback in the R245fa temperature feedback and high temperature multistage expansion turbine after intermediate extraction superheater, For adjusting the flow of intergrade steam extraction, R245fa temperature feedback value after intermediate extraction superheater is more than or less than setting Intermediate extraction superheater after R245fa temperature value when, turn down or open automatically the aperture of big regulating valve, while when high temperature is more When pressure feedback value in grade turbo-expander is less than the pressure atresia value in the high temperature multistage expansion turbine of setting, close automatically It locks regulating valve to open, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit；High-temperature evaporator and cryogenic vaporizer The distance between L be the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine is 3 grades of expanding machines, and intergrade steam extraction takes From the 2nd grade of high temperature multistage expansion turbine；

High-temperature evaporator and cryogenic vaporizer are all made of screen formula-spiral heat exchange tube, and the front half section in gas inlet side is adopted With the screen formula heat exchanger tube being staggered in arrangement, the second half section uses spiral heat exchange tube；Cooling water return pipe of the engine to radiator Return water evaporator is additionally provided on road, for recycling the heat of engine cooling water return water, cooling source is derived from low-temperature circulating pump Centre tap, it is heated after the R245fa that comes out of centre tap return to the inlet of intermediate extraction superheater；The high temperature Evaporator and cryogenic vaporizer are integrally provided in the heat exchange shell of drum type brake, and the shell that exchanges heat passes through spiral shell by procapsid and back casing Bolt fastens, and the length of procapsid is identical as the screen horizontal length of formula heat exchanger tube, the length of back casing and spiral heat exchange tube Horizontal length is identical；Multiple vibrators are provided on the screen formula heat exchanger tube, vibrator is powered by battery group；The procapsid Bottom it is arc-shaped, be additionally provided with sewage draining exit at the minimum point of curved bottom, fallen for being periodically discharged to shake on screen formula heat exchanger tube Dirt；

It is coaxially connected by shaft coupling between low temperature multistage expanding machine and high temperature multistage expansion turbine, it is first in system starting Phase, the R245fa in low-temperature heat exchange circuit reach vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expands prow First start, while driving high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling, it is swollen to play reduction high temperature multistage turbine The starting pressure of swollen machine shortens the effect of starting time；When system stops, the coasting operation first of high temperature multistage expansion turbine subtracts Speed, while driving low temperature multistage expanding machine to slow down by shaft coupling, to reduce the idling time of cryogenic expansion machine, it is low to play reduction The air blast friction of warm multiple expansion engine, the effect for preventing blade from overheating；

It further include battery group, inverter and frequency converter, one end of high temperature multistage expansion turbine is connected with battery group, Battery group is for storing the electric energy being transformed by the kinetic energy of expanding machine；Battery group is connected with inverter and frequency converter, inverse Become device to be used for the DC inverter of battery as alternating current, frequency converter is for driving backpressure regulation blower and adjusting its revolving speed； Backpressure regulation blower is used to lower and control the back pressure of engine, adjusts back by the pressure at expulsion feedback detected when operation Pressure adjusts the revolving speed of blower to adjust back pressure in optimum value.

Preferably, the low temperature multistage expanding machine and high temperature multistage expansion turbine pass through high temperature inlet valve and low temperature respectively Inlet valve adjusts respective throttle flow, and the stability of flow area of the high temperature inlet valve and low temperature inlet valve that use is 30%~100% Metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are greater than 30% respective metered flow, high temperature is into vapour Valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjust the revolving speed of high temperature circulation pump or low-temperature circulating pump come Change the power output of expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are less than 30% respective metered flow, It keeps the revolving speed of high temperature circulation pump or low-temperature circulating pump constant, is adjusted by the aperture of control high temperature inlet valve or low temperature inlet valve Save the power output of expanding machine.

The beneficial effect of this waste conveyor：Simple and practical in structure, conveying is convenient, and mobility is strong, and energy can secondary benefit With energy conservation and environmental protection；The off gas energy recovery system for devising engine, according to the heat recovery demand of different temperature zones and Jie The evaporating temperature of matter and the difference of heat transfer characteristic use different circulatory mediators in high temperature section and low-temperature zone, thus on the whole Improve the heat exchange efficiency of system；The cooling hair of return water evaporator is led to by the way that the lower low-temperature circulating of pressure is pumped centre tap The return water of motivation cooling water can recycle simultaneously the heat of cooling water in recycling motor exhaust waste heat, and energy-saving effect is bright It is aobvious；A kind of screen formula-spiral heat exchange tube that suitable tail gas heat exchange uses has been redesigned, had not only been convenient to clean, but also increase heat exchange effect Rate；Pass through recovering energy part for carrying on the back by inverter and transducer drive backpressure regulation blower, and according to exhaust The revolving speed of the feedback regulation backpressure regulation blower of pressure, by backpressure regulation and energy while realizing without driven by external power blower Recycling integration, is greatly saved investment and space hold；Utilize the intergrade steam extraction of high temperature multistage expansion turbine, this part Steam extraction pass through one section of expansion process in high temperature multistage expansion turbine, heated using its remaining heat into low On the one hand medium R245fa before warm multiple expansion engine can guarantee effective vaporization of R245fa, on the other hand can be improved low The mechanical efficiency of warm expansion circuit, avoids cold source energy, to improve the whole efficiency of energy recycle device；Low temperature multistage expansion Between machine and high temperature multistage expansion turbine by shaft coupling it is coaxially connected, system starting initial stage, due to exhaust temperature compared with Low, the R245fa in low-temperature heat exchange circuit reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expands prow First start, while driving high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling, it is more to effectively reduce high temperature in this way The starting pressure of grade turbo-expander, shortens the starting time, and when system stops, the coasting operation first of high temperature multistage expansion turbine subtracts Speed, while driving low temperature multistage expanding machine to slow down by shaft coupling, to reduce the idling time of cryogenic expansion machine, due to stopping Medium temperature in journey in expanding machine is also relatively high, primarily serves the air blast friction for reducing low temperature multistage expanding machine at this time, prevents The effect of blade overheat；The considerations of according to inlet valve control characteristic under different flow rate working conditions and restriction loss, devise one kind The control mode that revolving speed and inlet valve combine is reducing the stability that adjusting is maintained while restriction loss.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings Other attached drawings.

Fig. 1 is the overall structure diagram of this waste conveyor；

Fig. 2 is the structural schematic diagram 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.

Appended drawing reference：Radiator -1；Engine -2；Warm condenser -3；Low-temperature condenser -4；High-temperature evaporator -5；It is low Warm evaporator -6；High temperature multistage expansion turbine -7；Low temperature multistage expanding machine -8；Return water evaporator -9；High temperature circulation pump -10； Low-temperature circulating pump -11；Intermediate extraction superheater -12；Battery group -13；Backpressure regulation blower -14；Inverter and frequency converter- 15；Regulating 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；Refuse hopper -24；First mechanical arm -25；Second mechanical arm -26；Hydraulic stem -27；Car body -28.

Specific embodiment

The invention will be further described with the following Examples.

Embodiment 1：

A kind of waste conveyor as shown in Figure 1, including car body 28, refuse hopper 24, first mechanical arm 25, second are mechanical Arm 26, hydraulic stem 27 and engine system, the car body 28, first mechanical arm 25, second mechanical arm 26 and refuse hopper 24 are successively It is hinged and connected；Multiple hydraulic stems 27 are sequentially arranged between car body 28 and first mechanical arm 25, first mechanical arm 25 and Between two mechanical arms 26, between second mechanical arm 26 and refuse hopper 24, for driving first mechanical arm 25,26 and of second mechanical arm Refuse hopper 24 acts；The car body 28 is driven by engine 2.

As shown in Fig. 2, engine power recyclable device is used to recycle the energy of 2 tail gas of engine comprising radiator 1, Engine 2, return water evaporator 9, high temperature heat-exchanging loop, low-temperature heat exchange circuit, battery group 13, inverter and frequency converter 15 and back Pressure adjusts blower 14.Radiator 1 is connected with engine 2, and the heat of engine 2 is transferred to heat dissipation by cooling water by radiator 1 On device 1, and pass through the surface radiating of radiator 1.The tail gas of engine 2 successively passes through backpressure regulation blower 14, high temperature evaporation Atmosphere is discharged after device 5, cryogenic vaporizer 6 are cooling.

High temperature heat-exchanging loop includes that the high temperature circulation being sequentially connected pumps 10, high-temperature evaporator 5, high temperature multistage expansion turbine 7 and warm condenser 3, the medium flowed in high temperature heat-exchanging loop is water, after high-temperature evaporator 5 is mounted on backpressure regulation blower 14 High-temperature tail gas pipeline on, through the cooling medium water of warm condenser 3 by high temperature circulation pump 10 squeeze into high-temperature evaporator 5 to The tail gas of cooling high-temperature tail gas section, the medium water after heating then pass through the acting of high temperature multistage expansion turbine 7, thermal energy are converted For the mechanical energy of high temperature multistage expansion turbine 7.

Low-temperature heat exchange circuit include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12, Low temperature multistage expanding machine 8 and low-temperature condenser 4, the medium flowed in low-temperature heat exchange circuit are R245fa, and cryogenic vaporizer 6 is installed The heat that tail gas is further recycled on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooling through low-temperature condenser 6 Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the R245fa after heating passes through intermediate extraction superheater 12 It does work afterwards by low temperature multiple expansion engine 8, converts heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research It is existing, in energy recycle device, use water not identical as medium and the effect for using R245fa as both media, the evaporation of water The evaporating temperature of temperature ratio R245fa is higher by much, therefore is suitble to use in the tail gas section of high temperature；And in the tail gas of low temperature It uses R245fa as medium in section, is more advantageous to its evaporation acting.In addition, this will under the conditions of different pressure and temperatures Both media are used in combination, and can also improve the heat exchange efficiency of system on the whole.Intermediate extraction superheater 12 is pipe type heat transfer Device, intergrade steam extraction of the heat source from high temperature multistage expansion turbine 7, the steam extraction of this part is in high temperature multistage turbine Pass through one section of expansion process in expanding machine 7, is heated using its remaining heat into the medium before low temperature multistage expanding machine 8 On the one hand R245fa can guarantee effective vaporization of R245fa, the mechanical efficiency in low-temperature expansion circuit on the other hand can be improved, Cold source energy is avoided, to improve the whole efficiency of energy recycle device.Specific steam extraction series can be according to two expanding machines In different condition ranges determine.It further include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12 Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7 works as intermediate extraction for adjusting the flow of intergrade steam extraction R245fa temperature feedback value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting When value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16, which is opened, (forbids its continuation greatly Open big), the R245fa temperature to prevent the power output of high temperature multistage expansion turbine 7 too low, after the intermediate extraction superheater 12 of setting Pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through the method for experiment according to different concrete conditions It is manually set, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, it takes The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 3 grades of expanding machines, and intergrade steam extraction is derived from the 2nd grade of high temperature multistage expansion turbine.

As shown in Figure 3,4, it is contemplated that more how long impurity in tail gas is not easy to cleaning after use and is easy to happen blocking, And heat exchange efficiency is taken into account, high-temperature evaporator 5 and cryogenic vaporizer 6 are all made of screen formula-spiral heat exchange tube new structure, The inlet side of tail gas, using the screen formula heat exchanger tube 17 being staggered in arrangement, tail gas impurity most in this way is blocked in screen formula and changes On heat pipe 17, when cleaning, is very convenient, while being staggered in arrangement the flow resistance that can also effectively reduce tail gas；And spiral shell is used in the second half section Heat exchanger tube 18 is revolved, improves heat exchange efficiency to reinforce flow perturbation.The cooling source of warm condenser 3 and low-temperature condenser 4 can take From air-conditioning refrigerant, other cold sources can also be derived from, because the after-heat of this part is few, as long as being able to satisfy will change Medium in hot loop, which is re-cooled to liquid, prevents 11 vaporization of high temperature circulation pump 10 and low-temperature circulating pump.The high temperature steams Hair device 5 and cryogenic vaporizer 6 are integrally provided in the heat exchange shell of drum type brake, and heat exchange shell is led to by procapsid 20 and back casing 21 Bolt 22 is crossed to fasten, the length of procapsid 20 is identical as the screen horizontal length of formula heat exchanger tube 17, the length of back casing 21 with The horizontal length of spiral heat exchange tube 18 is identical；It is provided with multiple vibrator (not shown)s on the screen formula heat exchanger tube 17, shakes Device is made to be powered by battery group 13；The bottom of the procapsid 20 is arc-shaped, the row of being additionally provided at the minimum point of curved bottom Dirty mouth 23, for the dirt fallen that shakes periodically to be discharged on screen formula heat exchanger tube 17.

It is additionally provided with return water evaporator 9 on the cooling water return pipe road of engine 2 to radiator 1, is started for recycling The heat of machine cooling water return water, cooling source be derived from low-temperature circulating pump 11 centre tap, it is heated after centre tap come out R245fa return to the inlet of intermediate extraction superheater 12.The centre tap of the lower low-temperature circulating pump 11 of pressure is led to The return water of the cooling engine cooling water of return water evaporator, on the one hand can recycle the heat of cooling water return water, on the other hand well Have more preferably compared to individually adding a circulation or drawing cooling medium from the outlet of low-temperature circulating pump 11 and high temperature circulation pump 10 Energy-saving effect.

It is coaxially connected by shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7, it is opened in system At dynamic initial stage, since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit reaches vapour prior to the water in high temperature heat-exchanging loop Change temperature, low temperature multistage expanding machine 8 starts first, while driving 7 low speed of high temperature multistage expansion turbine pre- by shaft coupling 19 Rotation, can effectively reduce the starting pressure of high temperature multistage expansion turbine 7 in this way, shorten the starting time, due to high temperature at this time Medium temperature in multistage expansion turbine 7 is very low, and the length of blade of high temperature multistage expansion turbine 7 is compared with low temperature multiple expansion The length of blade of machine 8 is small, and the air blast friction very little of blade can almost not have to consider；When system stops, high temperature multistage turbine The coasting operation first of expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce cryogenic expansion machine 8 Idling time primarily serve reduction low temperature multistage at this time since the medium temperature in stopped process in expanding machine is also relatively high The air blast friction of expanding machine 8, the effect for preventing blade from overheating.

One end of high temperature multistage expansion turbine 7 is connected with battery group 13, and battery group 13 is for storing by expanding machine The electric energy that kinetic energy is transformed.The technology that the electric energy of battery is converted energy into about expanding machine, due to the prior art Very mature, details are not described herein.Battery group 13 is connected with inverter and frequency converter 15, and inverter is used for the direct current of battery Electric inversion is alternating current, and frequency converter is for driving backpressure regulation blower 14 and adjusting its revolving speed.Energy recycle device is to engine 2 Influence essentially consist in engine exhaust by that the exhaust back pressure of engine 2 can be made to increase when heater in system, and be vented Back pressure increases the power consumption that will lead to when exhaust gas is released cylinder by engine piston and increases, therefore backpressure regulation blower 14 is arranged can be with Effectively lower and control the back pressure of engine 2, when operation, backpressure regulation wind is adjusted by the pressure at expulsion feedback detected The revolving speed of machine 14 is to adjust back pressure in optimum value, while this energy using battery group 13 itself drives the side of blower Formula has the advantages of not needing external power supply.

Low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 pass through high temperature inlet valve and low temperature inlet valve (figure respectively In be not shown) adjust respective throttle flow.The stability of flow area of the high temperature inlet valve and low temperature inlet valve that use for 30%~ 100% metered flow, either low-temperature heat exchange circuit or high temperature heat-exchanging loop, the control of pump and the control of expanding machine, first The flow of working medium is adjusted by pump, realizes the control to working medium temperature at expander inlet, the expansion when flow changes Machine must make corresponding adjustment to match flow, if the operation of expanding machine and flow mismatch, cannot not only maintain stable Evaporating pressure, the operation of expanding machine also cannot keep stabilization, while according to the characteristic of high temperature inlet valve and low temperature inlet valve, adopt It is adjusted with pressure and speed adjusts the control mode matched：When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are greater than When 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, by adjusting high temperature Circulating pump 10 or low-temperature circulating pump 11 revolving speed to change the power output of expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange circuit When circular flow is less than 30% respective metered flow, the control characteristic of inlet valve when due to small flow is unstable, keeps high temperature Circulating pump 10 or low-temperature circulating 11 revolving speeds of pump are constant, and expansion is adjusted by the aperture of control high temperature inlet valve or low temperature inlet valve The power output of machine.

Simple and practical in structure in the waste conveyor of this embodiment, conveying is convenient, and mobility is strong, and energy can be secondary It utilizes, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to the heat recovery demand and medium of different temperature zones Evaporating temperature and heat transfer characteristic difference, different circulatory mediators is used in high temperature section and low-temperature zone, to mention on the whole The high heat exchange efficiency of system；The cooling hair of return water evaporator 9 is led to by the way that the lower low-temperature circulating of pressure is pumped centre tap The return water of motivation cooling water can recycle simultaneously the heat of cooling water in recycling motor exhaust waste heat, and energy-saving effect is bright It is aobvious；A kind of screen formula-spiral heat exchange tube that suitable tail gas heat exchange uses has been redesigned, had not only been convenient to clean, but also increase heat exchange effect Rate；By recovering energy part for driving backpressure regulation blower 14 by inverter and frequency converter 15, and according to row The revolving speed of the feedback regulation backpressure regulation blower 14 of gas back pressure, by backpressure regulation while realizing without driven by external power blower With energy regenerating integration, investment and space hold is greatly saved；It is taken out using the intergrade of high temperature multistage expansion turbine 7 Vapour, the steam extraction of this part in high temperature multistage expansion turbine 7 pass through one section of expansion process, using its remaining heat come Heating enters the medium R245fa before low temperature multistage expanding machine 8, on the one hand can guarantee effective vaporization of R245fa, on the other hand The mechanical efficiency that low-temperature expansion circuit can be improved, avoids cold source energy, to improve the whole efficiency of energy recycle device；It is low Between warm multiple expansion engine 8 and high temperature multistage expansion turbine 7 by shaft coupling 19 it is coaxially connected, system starting initial stage, Since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, low Warm multiple expansion engine starts first, while driving 7 low speed of high temperature multistage expansion turbine to rotate in advance by shaft coupling 19, in this way may be used To effectively reduce the starting pressure of high temperature multistage expansion turbine 7, shorten the starting time, when system stops, high temperature is multistage thoroughly The coasting operation first of flat expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce low-temperature expansion It is more to primarily serve reduction low temperature since the medium temperature in stopped process in expanding machine is also relatively high at this time for the idling time of machine 8 The air blast friction of grade expanding machine 8, the effect for preventing blade from overheating；According to inlet valve control characteristic and section under different flow rate working conditions The considerations of stream loss, devises the control mode that a kind of revolving speed and inlet valve combine, keeps while reducing restriction loss The stability adjusted.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 3/4 of exhaust pipe road overall length, high Warm multistage expansion turbine 7 is 3 grades of expanding machines, and intergrade steam extraction is derived from the 2nd grade of high temperature multistage expansion turbine 7, and heat returns The rate of producing effects improves 4%, achieves unexpected effect.

Embodiment 2：

As shown in Fig. 2, engine power recyclable device is used to recycle the energy of motor exhaust comprising radiator 1, hair Motivation 2, return water evaporator 9, high temperature heat-exchanging loop, low-temperature heat exchange circuit, battery group 13, inverter and frequency converter 15 and back pressure Adjust blower 14.Radiator 1 is connected with engine 2, and the heat of engine 2 is transferred to radiator 1 by cooling water by radiator 1 On, and pass through the surface radiating of radiator 1.The tail gas of engine 2 successively pass through backpressure regulation blower 14, high-temperature evaporator 5, Atmosphere is discharged after cryogenic vaporizer 6 is cooling.

Low-temperature heat exchange circuit include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12, Low temperature multistage expanding machine 8 and low-temperature condenser 4, the medium flowed in low-temperature heat exchange circuit are R245fa, and cryogenic vaporizer 6 is installed The heat that tail gas is further recycled on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooling through low-temperature condenser 6 Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the R245fa after heating passes through intermediate extraction superheater 12 It does work afterwards by low temperature multiple expansion engine 8, converts heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research It is existing, in energy recycle device, use water not identical as medium and the effect for using R245fa as both media, the evaporation of water The evaporating temperature of temperature ratio R245fa is higher by much, therefore is suitble to use in the tail gas section of high temperature；And in the tail gas of low temperature It uses R245fa as medium in section, is more advantageous to its evaporation acting.In addition, this will under the conditions of different pressure and temperatures Both media are used in combination, and can also improve the heat exchange efficiency of system on the whole.Intermediate extraction superheater 12 is pipe type heat transfer Device, intergrade steam extraction of the heat source from high temperature multistage expansion turbine 7, the steam extraction of this part is in high temperature multistage turbine Pass through one section of expansion process in expanding machine 7, is heated using its remaining heat into the medium before low temperature multistage expanding machine 8 On the one hand R245fa can guarantee effective vaporization of R245fa, the mechanical efficiency in low-temperature expansion circuit on the other hand can be improved, Cold source energy is avoided, to improve the whole efficiency of energy recycle device.Specific steam extraction series can be according to two expanding machines In different condition ranges determine.It further include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12 Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7 works as intermediate extraction for adjusting the flow of intergrade steam extraction R245fa temperature feedback value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting When value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16, which is opened, (forbids its continuation greatly Open big), the R245fa temperature to prevent the power output of high temperature multistage expansion turbine 7 too low, after the intermediate extraction superheater 12 of setting Pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through the method for experiment according to different concrete conditions It is manually set, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, it takes The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/3 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 4 grades of expanding machines, and intergrade steam extraction is derived from the 2nd grade of high temperature multistage expansion turbine.

Simple and practical in structure in the waste conveyor of this embodiment, conveying is convenient, and mobility is strong, and energy can be secondary It utilizes, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to the heat recovery demand and medium of different temperature zones Evaporating temperature and heat transfer characteristic difference, different circulatory mediators is used in high temperature section and low-temperature zone, to mention on the whole The high heat exchange efficiency of system；The cooling hair of return water evaporator 9 is led to by the way that the lower low-temperature circulating of pressure is pumped centre tap The return water of motivation cooling water can recycle simultaneously the heat of cooling water in recycling motor exhaust waste heat, and energy-saving effect is bright It is aobvious；A kind of screen formula-spiral heat exchange tube that suitable tail gas heat exchange uses has been redesigned, had not only been convenient to clean, but also increase heat exchange effect Rate；By recovering energy part for driving backpressure regulation blower 14 by inverter and frequency converter 15, and according to row The revolving speed of the feedback regulation backpressure regulation blower 14 of gas back pressure, by backpressure regulation while realizing without driven by external power blower With energy regenerating integration, investment and space hold is greatly saved；It is taken out using the intergrade of high temperature multistage expansion turbine 7 Vapour, the steam extraction of this part in high temperature multistage expansion turbine 7 pass through one section of expansion process, using its remaining heat come Heating enters the medium R245fa before low temperature multistage expanding machine 8, on the one hand can guarantee effective vaporization of R245fa, on the other hand The mechanical efficiency that low-temperature expansion circuit can be improved, avoids cold source energy, to improve the whole efficiency of energy recycle device；It is low Between warm multiple expansion engine 8 and high temperature multistage expansion turbine 7 by shaft coupling 19 it is coaxially connected, system starting initial stage, Since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, low Warm multiple expansion engine starts first, while driving 7 low speed of high temperature multistage expansion turbine to rotate in advance by shaft coupling 19, in this way may be used To effectively reduce the starting pressure of high temperature multistage expansion turbine 7, shorten the starting time, when system stops, high temperature is multistage thoroughly The coasting operation first of flat expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce low-temperature expansion It is more to primarily serve reduction low temperature since the medium temperature in stopped process in expanding machine is also relatively high at this time for the idling time of machine 8 The air blast friction of grade expanding machine 8, the effect for preventing blade from overheating；According to inlet valve control characteristic and section under different flow rate working conditions The considerations of stream loss, devises the control mode that a kind of revolving speed and inlet valve combine, keeps while reducing restriction loss The stability adjusted.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/3 of exhaust pipe road overall length, high Warm multistage expansion turbine 7 is 4 grades of expanding machines, and intergrade steam extraction is derived from the 2nd grade of high temperature multistage expansion turbine 7, and heat returns The rate of producing effects improves 4.5%, achieves unexpected effect.

Embodiment 3：

Low-temperature heat exchange circuit include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12, Low temperature multistage expanding machine 8 and low-temperature condenser 4, the medium flowed in low-temperature heat exchange circuit are R245fa, and cryogenic vaporizer 6 is installed The heat that tail gas is further recycled on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooling through low-temperature condenser 6 Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the R245fa after heating passes through intermediate extraction superheater 12 It does work afterwards by low temperature multiple expansion engine 8, converts heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research It is existing, in energy recycle device, use water not identical as medium and the effect for using R245fa as both media, the evaporation of water The evaporating temperature of temperature ratio R245fa is higher by much, therefore is suitble to use in the tail gas section of high temperature；And in the tail gas of low temperature It uses R245fa as medium in section, is more advantageous to its evaporation acting.In addition, this will under the conditions of different pressure and temperatures Both media are used in combination, and can also improve the heat exchange efficiency of system on the whole.Intermediate extraction superheater 12 is pipe type heat transfer Device, intergrade steam extraction of the heat source from high temperature multistage expansion turbine 7, the steam extraction of this part is in high temperature multistage turbine Pass through one section of expansion process in expanding machine 7, is heated using its remaining heat into the medium before low temperature multistage expanding machine 8 On the one hand R245fa can guarantee effective vaporization of R245fa, the mechanical efficiency in low-temperature expansion circuit on the other hand can be improved, Cold source energy is avoided, to improve the whole efficiency of energy recycle device.Specific steam extraction series can be according to two expanding machines In different condition ranges determine.It further include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12 Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7 works as intermediate extraction for adjusting the flow of intergrade steam extraction R245fa temperature feedback value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting When value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16, which is opened, (forbids its continuation greatly Open big), the R245fa temperature to prevent the power output of high temperature multistage expansion turbine 7 too low, after the intermediate extraction superheater 12 of setting Pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through the method for experiment according to different concrete conditions It is manually set, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, it takes The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 1/2 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 5 grades of expanding machines, and intergrade steam extraction is derived from the 3rd level of high temperature multistage expansion turbine.

Simple and practical in structure in the waste conveyor of this embodiment, conveying is convenient, and mobility is strong, and energy can be secondary It utilizes, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to the heat recovery demand and medium of different temperature zones Evaporating temperature and heat transfer characteristic difference, different circulatory mediators is used in high temperature section and low-temperature zone, to mention on the whole The high heat exchange efficiency of system；The cooling hair of return water evaporator 9 is led to by the way that the lower low-temperature circulating of pressure is pumped centre tap The return water of motivation cooling water can recycle simultaneously the heat of cooling water in recycling motor exhaust waste heat, and energy-saving effect is bright It is aobvious；A kind of screen formula-spiral heat exchange tube that suitable tail gas heat exchange uses has been redesigned, had not only been convenient to clean, but also increase heat exchange effect Rate；By recovering energy part for driving backpressure regulation blower 14 by inverter and frequency converter 15, and according to row The revolving speed of the feedback regulation backpressure regulation blower 14 of gas back pressure, by backpressure regulation while realizing without driven by external power blower With energy regenerating integration, investment and space hold is greatly saved；It is taken out using the intergrade of high temperature multistage expansion turbine 7 Vapour, the steam extraction of this part in high temperature multistage expansion turbine 7 pass through one section of expansion process, using its remaining heat come Heating enters the medium R245fa before low temperature multistage expanding machine 8, on the one hand can guarantee effective vaporization of R245fa, on the other hand The mechanical efficiency that low-temperature expansion circuit can be improved, avoids cold source energy, to improve the whole efficiency of energy recycle device；It is low Between warm multiple expansion engine 8 and high temperature multistage expansion turbine 7 by shaft coupling 19 it is coaxially connected, system starting initial stage, Since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, low Warm multiple expansion engine starts first, while driving 7 low speed of high temperature multistage expansion turbine to rotate in advance by shaft coupling 19, in this way may be used To effectively reduce the starting pressure of high temperature multistage expansion turbine 7, shorten the starting time, when system stops, high temperature is multistage thoroughly The coasting operation first of flat expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce low-temperature expansion It is more to primarily serve reduction low temperature since the medium temperature in stopped process in expanding machine is also relatively high at this time for the idling time of machine 8 The air blast friction of grade expanding machine 8, the effect for preventing blade from overheating；According to inlet valve control characteristic and section under different flow rate working conditions The considerations of stream loss, devises the control mode that a kind of revolving speed and inlet valve combine, keeps while reducing restriction loss The stability adjusted.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 1/2 of exhaust pipe road overall length, high Warm multistage expansion turbine 7 is 5 grades of expanding machines, and intergrade steam extraction is derived from the 3rd level of high temperature multistage expansion turbine 7, and heat returns The rate of producing effects improves 5%, achieves unexpected effect.

Embodiment 4：

Low-temperature heat exchange circuit include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12, Low temperature multistage expanding machine 8 and low-temperature condenser 4, the medium flowed in low-temperature heat exchange circuit are R245fa, and cryogenic vaporizer 6 is installed The heat that tail gas is further recycled on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooling through low-temperature condenser 6 Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the R245fa after heating passes through intermediate extraction superheater 12 It does work afterwards by low temperature multiple expansion engine 8, converts heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research It is existing, in energy recycle device, use water not identical as medium and the effect for using R245fa as both media, the evaporation of water The evaporating temperature of temperature ratio R245fa is higher by much, therefore is suitble to use in the tail gas section of high temperature；And in the tail gas of low temperature It uses R245fa as medium in section, is more advantageous to its evaporation acting.In addition, this will under the conditions of different pressure and temperatures Both media are used in combination, and can also improve the heat exchange efficiency of system on the whole.Intermediate extraction superheater 12 is pipe type heat transfer Device, intergrade steam extraction of the heat source from high temperature multistage expansion turbine 7, the steam extraction of this part is in high temperature multistage turbine Pass through one section of expansion process in expanding machine 7, is heated using its remaining heat into the medium before low temperature multistage expanding machine 8 On the one hand R245fa can guarantee effective vaporization of R245fa, the mechanical efficiency in low-temperature expansion circuit on the other hand can be improved, Cold source energy is avoided, to improve the whole efficiency of energy recycle device.Specific steam extraction series can be according to two expanding machines In different condition ranges determine.It further include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12 Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7 works as intermediate extraction for adjusting the flow of intergrade steam extraction R245fa temperature feedback value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting When value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16, which is opened, (forbids its continuation greatly Open big), the R245fa temperature to prevent the power output of high temperature multistage expansion turbine 7 too low, after the intermediate extraction superheater 12 of setting Pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through the method for experiment according to different concrete conditions It is manually set, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, it takes The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/5 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 5 grades of expanding machines, and intergrade steam extraction is derived from the 2nd grade of high temperature multistage expansion turbine.

Simple and practical in structure in the waste conveyor of this embodiment, conveying is convenient, and mobility is strong, and energy can be secondary It utilizes, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to the heat recovery demand and medium of different temperature zones Evaporating temperature and heat transfer characteristic difference, different circulatory mediators is used in high temperature section and low-temperature zone, to mention on the whole The high heat exchange efficiency of system；The cooling hair of return water evaporator 9 is led to by the way that the lower low-temperature circulating of pressure is pumped centre tap The return water of motivation cooling water can recycle simultaneously the heat of cooling water in recycling motor exhaust waste heat, and energy-saving effect is bright It is aobvious；A kind of screen formula-spiral heat exchange tube that suitable tail gas heat exchange uses has been redesigned, had not only been convenient to clean, but also increase heat exchange effect Rate；By recovering energy part for driving backpressure regulation blower 14 by inverter and frequency converter 15, and according to row The revolving speed of the feedback regulation backpressure regulation blower 14 of gas back pressure, by backpressure regulation while realizing without driven by external power blower With energy regenerating integration, investment and space hold is greatly saved；It is taken out using the intergrade of high temperature multistage expansion turbine 7 Vapour, the steam extraction of this part in high temperature multistage expansion turbine 7 pass through one section of expansion process, using its remaining heat come Heating enters the medium R245fa before low temperature multistage expanding machine 8, on the one hand can guarantee effective vaporization of R245fa, on the other hand The mechanical efficiency that low-temperature expansion circuit can be improved, avoids cold source energy, to improve the whole efficiency of energy recycle device；It is low Between warm multiple expansion engine 8 and high temperature multistage expansion turbine 7 by shaft coupling 19 it is coaxially connected, system starting initial stage, Since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, low Warm multiple expansion engine starts first, while driving 7 low speed of high temperature multistage expansion turbine to rotate in advance by shaft coupling 19, in this way may be used To effectively reduce the starting pressure of high temperature multistage expansion turbine 7, shorten the starting time, when system stops, high temperature is multistage thoroughly The coasting operation first of flat expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce low-temperature expansion It is more to primarily serve reduction low temperature since the medium temperature in stopped process in expanding machine is also relatively high at this time for the idling time of machine 8 The air blast friction of grade expanding machine 8, the effect for preventing blade from overheating；According to inlet valve control characteristic and section under different flow rate working conditions The considerations of stream loss, devises the control mode that a kind of revolving speed and inlet valve combine, keeps while reducing restriction loss The stability adjusted.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/5 of exhaust pipe road overall length, high Warm multistage expansion turbine 7 is 5 grades of expanding machines, and intergrade steam extraction is derived from the 2nd grade of high temperature multistage expansion turbine 7, and heat returns The rate of producing effects improves 5.5%, achieves unexpected effect.

Embodiment 5：

Low-temperature heat exchange circuit include be sequentially connected low-temperature circulating pump 11, cryogenic vaporizer 6, intermediate extraction superheater 12, Low temperature multistage expanding machine 8 and low-temperature condenser 4, the medium flowed in low-temperature heat exchange circuit are R245fa, and cryogenic vaporizer 6 is installed The heat that tail gas is further recycled on the low temperature exhaust gas pipeline after high-temperature evaporator 5, cooling through low-temperature condenser 6 Medium R245fa is squeezed into cryogenic vaporizer 6 by low-temperature circulating pump 11, and the R245fa after heating passes through intermediate extraction superheater 12 It does work afterwards by low temperature multiple expansion engine 8, converts heat energy into the mechanical energy of low temperature multistage expanding machine 8.Inventor sends out through research It is existing, in energy recycle device, use water not identical as medium and the effect for using R245fa as both media, the evaporation of water The evaporating temperature of temperature ratio R245fa is higher by much, therefore is suitble to use in the tail gas section of high temperature；And in the tail gas of low temperature It uses R245fa as medium in section, is more advantageous to its evaporation acting.In addition, this will under the conditions of different pressure and temperatures Both media are used in combination, and can also improve the heat exchange efficiency of system on the whole.Intermediate extraction superheater 12 is pipe type heat transfer Device, intergrade steam extraction of the heat source from high temperature multistage expansion turbine 7, the steam extraction of this part is in high temperature multistage turbine Pass through one section of expansion process in expanding machine 7, is heated using its remaining heat into the medium before low temperature multistage expanding machine 8 On the one hand R245fa can guarantee effective vaporization of R245fa, the mechanical efficiency in low-temperature expansion circuit on the other hand can be improved, Cold source energy is avoided, to improve the whole efficiency of energy recycle device.Specific steam extraction series can be according to two expanding machines In different condition ranges determine.It further include regulating valve 16, regulating valve 16 is according to the R245fa after intermediate extraction superheater 12 Pressure feedback in temperature feedback and high temperature multistage expansion turbine 7 works as intermediate extraction for adjusting the flow of intergrade steam extraction R245fa temperature feedback value after superheater 12 is more than or less than the R245fa temperature after the intermediate extraction superheater 12 of setting When value, the aperture of big regulating valve 16 is turned down or opens automatically, while when the pressure feedback value in high temperature multistage expansion turbine 7 is small When pressure atresia value in the high temperature multistage expansion turbine 7 of setting, automatic blocking regulating valve 16, which is opened, (forbids its continuation greatly Open big), the R245fa temperature to prevent the power output of high temperature multistage expansion turbine 7 too low, after the intermediate extraction superheater 12 of setting Pressure atresia value in angle value and the high temperature multistage expansion turbine 7 of setting passes through the method for experiment according to different concrete conditions It is manually set, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, it takes The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/7 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 be 6 grades of expanding machines, and intergrade steam extraction is derived from the 3rd level of high temperature multistage expansion turbine.

Simple and practical in structure in the waste conveyor of this embodiment, conveying is convenient, and mobility is strong, and energy can be secondary It utilizes, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to the heat recovery demand and medium of different temperature zones Evaporating temperature and heat transfer characteristic difference, different circulatory mediators is used in high temperature section and low-temperature zone, to mention on the whole The high heat exchange efficiency of system；The cooling hair of return water evaporator 9 is led to by the way that the lower low-temperature circulating of pressure is pumped centre tap The return water of motivation cooling water can recycle simultaneously the heat of cooling water in recycling motor exhaust waste heat, and energy-saving effect is bright It is aobvious；A kind of screen formula-spiral heat exchange tube that suitable tail gas heat exchange uses has been redesigned, had not only been convenient to clean, but also increase heat exchange effect Rate；By recovering energy part for driving backpressure regulation blower 14 by inverter and frequency converter 15, and according to row The revolving speed of the feedback regulation backpressure regulation blower 14 of gas back pressure, by backpressure regulation while realizing without driven by external power blower With energy regenerating integration, investment and space hold is greatly saved；It is taken out using the intergrade of high temperature multistage expansion turbine 7 Vapour, the steam extraction of this part in high temperature multistage expansion turbine 7 pass through one section of expansion process, using its remaining heat come Heating enters the medium R245fa before low temperature multistage expanding machine 8, on the one hand can guarantee effective vaporization of R245fa, on the other hand The mechanical efficiency that low-temperature expansion circuit can be improved, avoids cold source energy, to improve the whole efficiency of energy recycle device；It is low Between warm multiple expansion engine 8 and high temperature multistage expansion turbine 7 by shaft coupling 19 it is coaxially connected, system starting initial stage, Since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, low Warm multiple expansion engine starts first, while driving 7 low speed of high temperature multistage expansion turbine to rotate in advance by shaft coupling 19, in this way may be used To effectively reduce the starting pressure of high temperature multistage expansion turbine 7, shorten the starting time, when system stops, high temperature is multistage thoroughly The coasting operation first of flat expanding machine 7 is slowed down, while driving low temperature multistage expanding machine 8 to slow down by shaft coupling 19, to reduce low-temperature expansion It is more to primarily serve reduction low temperature since the medium temperature in stopped process in expanding machine is also relatively high at this time for the idling time of machine 8 The air blast friction of grade expanding machine 8, the effect for preventing blade from overheating；According to inlet valve control characteristic and section under different flow rate working conditions The considerations of stream loss, devises the control mode that a kind of revolving speed and inlet valve combine, keeps while reducing restriction loss The stability adjusted.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L are the 2/7 of exhaust pipe road overall length, high Warm multistage expansion turbine 7 is 6 grades of expanding machines, and intergrade steam extraction is derived from the 3rd level of high temperature multistage expansion turbine 7, and heat returns The rate of producing effects improves 6%, achieves unexpected effect.

Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention Matter and range.

Claims

1. a kind of waste conveyor, characterized in that including car body, refuse hopper, first mechanical arm, second mechanical arm, hydraulic stem And engine system, the car body, first mechanical arm, second mechanical arm and refuse hopper are successively hinged and connected；It is multiple described hydraulic Bar is sequentially arranged between car body and first mechanical arm, between first mechanical arm and second mechanical arm, second mechanical arm and rubbish Between bucket, for driving first mechanical arm, second mechanical arm and refuse hopper movement；The car body is by engine driving, engine Off gas energy recovery device is used to recycle the energy of motor exhaust comprising radiator, engine, return water evaporator, high temperature Heat-exchanging loop, low-temperature heat exchange circuit, battery group, inverter and frequency converter, backpressure regulation blower；The radiator and engine It is connected, the surface radiating that the heat of engine is transferred on radiator by cooling water, and passes through radiator by radiator；Start The tail gas of machine successively passes through the cooling heel row of backpressure regulation blower, high-temperature evaporator, cryogenic vaporizer to atmosphere；

High temperature heat-exchanging loop includes high temperature circulation pump, high-temperature evaporator, high temperature multistage expansion turbine and the high temperature being sequentially connected Condenser, the interior medium flowed of high temperature heat-exchanging loop is water, and high-temperature evaporator is mounted on the high-temperature tail gas after backpressure regulation blower On pipeline, is squeezed into high-temperature evaporator through the cooling medium water of warm condenser by high temperature circulation pump, the medium water after heating with Enter high temperature multistage expansion turbine afterwards to do work；

Low-temperature heat exchange circuit includes that the low-temperature circulating pump, cryogenic vaporizer, intermediate extraction superheater, the low temperature multistage that are sequentially connected are swollen Swollen machine and low-temperature condenser, the medium flowed in low-temperature heat exchange circuit is R245fa, and cryogenic vaporizer is mounted on to be steamed by high temperature On low temperature exhaust gas pipeline after sending out device；Cryogenic vaporizer is squeezed by low-temperature circulating pump through low-temperature condenser cooling medium R245fa Interior, the R245fa after heating enters low temperature multistage expanding machine after the heating of intermediate extraction superheater and does work；Intermediate extraction overheat Device is pipe heat exchanger, intergrade steam extraction of the heat source from high temperature multistage expansion turbine；It further include regulating valve, the tune Valve is saved according to the pressure feedback in the R245fa temperature feedback and high temperature multistage expansion turbine after intermediate extraction superheater, is used for The flow for adjusting intergrade steam extraction, R245fa temperature feedback value after intermediate extraction superheater are more than or less than in setting Between R245fa temperature value after steam extraction superheater when, turn down or open automatically the aperture of big regulating valve, while when high temperature is multistage thoroughly When pressure feedback value in flat expanding machine is less than the pressure atresia value in the high temperature multistage expansion turbine of setting, automatic blocking tune It saves valve to open, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit；Between high-temperature evaporator and cryogenic vaporizer Distance L be the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine is 3 grades of expanding machines, and intergrade steam extraction is derived from height The 2nd grade of warm multistage expansion turbine；

High-temperature evaporator and cryogenic vaporizer are all made of screen formula-spiral heat exchange tube, and the front half section in gas inlet side uses wrong The screen formula heat exchanger tube of arrangement is arranged, the second half section uses spiral heat exchange tube；On the engine to the cooling water return pipe road of radiator It is additionally provided with return water evaporator, for recycling the heat of engine cooling water return water, cooling source is derived from low-temperature circulating pump Between tap, it is heated after the R245fa that comes out of centre tap return to the inlet of intermediate extraction superheater；The high temperature evaporation Device and cryogenic vaporizer are integrally provided in the heat exchange shell of drum type brake, and the shell that exchanges heat passes through bolt buckle by procapsid and back casing It closes, the length of procapsid is identical as the screen horizontal length of formula heat exchanger tube, the length of back casing and the level of spiral heat exchange tube Length is identical；Multiple vibrators are provided on the screen formula heat exchanger tube, vibrator is powered by battery group；The bottom of the procapsid Portion is arc-shaped, is additionally provided with sewage draining exit at the minimum point of curved bottom, for the dirt fallen of shaking periodically to be discharged on screen formula heat exchanger tube Object；

It is coaxially connected by shaft coupling between low temperature multistage expanding machine and high temperature multistage expansion turbine, in system initial start stage, R245fa in low-temperature heat exchange circuit reaches vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expanding machine opens first It is dynamic, while driving high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling, it plays and reduces high temperature multistage expansion turbine Starting pressure, shorten starting the time effect；When system stops, the coasting operation first of high temperature multistage expansion turbine is slowed down, together When by shaft coupling drive low temperature multistage expanding machine slow down, to reduce the idling time of cryogenic expansion machine, play reduce low temperature it is more The air blast friction of grade expanding machine, the effect for preventing blade from overheating；

It further include battery group, inverter and frequency converter, one end of high temperature multistage expansion turbine is connected with battery group, electric power storage Pond group is for storing the electric energy being transformed by the kinetic energy of expanding machine；Battery group is connected with inverter and frequency converter, inverter For being alternating current by the DC inverter of battery, frequency converter is for driving backpressure regulation blower and adjusting its revolving speed；Back pressure It adjusts blower and is used to lower and control the back pressure of engine, back pressure tune is adjusted by the pressure at expulsion feedback detected when operation The revolving speed of blower is saved to adjust back pressure in optimum value.

2. a kind of waste conveyor according to claim 1, characterized in that the low temperature multistage expanding machine and high temperature are more Grade turbo-expander passes through high temperature inlet valve and low temperature inlet valve respectively and adjusts respective throttle flow, the high temperature inlet valve of use and The stability of flow area of low temperature inlet valve is 30%~100% metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle When flow is greater than 30% respective metered flow, high temperature inlet valve or low temperature inlet valve keep standard-sized sheet to avoid restriction loss, pass through The revolving speed of high temperature circulation pump or low-temperature circulating pump is adjusted to change the power output of expanding machine；When high temperature heat-exchanging loop or low-temperature heat exchange When circuit cycle flow is less than 30% respective metered flow, keeps the revolving speed of high temperature circulation pump or low-temperature circulating pump constant, pass through The aperture of high temperature inlet valve or low temperature inlet valve is controlled to adjust the power output of expanding machine.