CN105839684B

CN105839684B - A kind of high-performance bulldozing device

Info

Publication number: CN105839684B
Application number: CN201610188935.6A
Authority: CN
Inventors: 时建华
Original assignee: Taizhou Bang Fu Environmental Protection Technology Co Ltd
Current assignee: Taizhou Bang Fu Environmental Protection Technology 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: CN105839684A

Abstract

The invention discloses a kind of high-performance bulldozing devices, including driver's cabin, hydraulic stem, bucket of bulldozing, crossbeam, column, oscillating plate, driving crawler belt and engine power recyclable device, the soil-shifting bucket is connected by hydraulic stem with driver's cabin, crossbeam is located at below hydraulic stem, and one end and soil-shifting bucket are hinged；One end of column is hinged on the crossbeam, and the other end is connected with oscillating plate, and vibration motor is provided in oscillating plate；Drive crawler belt by engine driving, the engine power recyclable device is used to recycle the energy of motor exhaust.The bulldozing device is simple and practical in structure, after soil-shifting can by oscillating plate by soil pressure reality, it is easy to operate, and engine exhaust energy can secondary use, energy conservation and environmental protection.

Description

A kind of high-performance bulldozing device

Technical field

The present invention relates to soil-shifting fields, and in particular to a kind of high-performance bulldozing device.

Background technique

Bulldozing device, i.e. bull-dozer are an important constructing devices in engineering construction.Bulldozing device is a kind of engineering truck , it can individually complete shoveling, muck haulage and unload geotechnological work, with flexible operation, rotation is convenient, required working face is small, travel speed The features such as fast.It can not secondary use etc. but existing bulldozing device there are still firmings inconvenient, structure is excessively complicated, energy consumption is higher Problem.

Summary of the invention

In view of the above-mentioned problems, the present invention provides a kind of high-performance bulldozing device.

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

A kind of high-performance bulldozing device, characterized in that including driver's cabin, hydraulic stem, bulldoze bucket, crossbeam, column, vibration Plate, driving crawler belt and engine power recyclable device, the soil-shifting bucket are connected by hydraulic stem with driver's cabin, and crossbeam is located at hydraulic Below bar, one end and soil-shifting bucket are hinged；One end of column is hinged on the crossbeam, and the other end is connected with oscillating plate, Vibration motor is provided in oscillating plate；Drive crawler belt by engine driving, the engine power recyclable device is for recycling hair The energy of motivation tail gas comprising radiator, engine, return water evaporator, high temperature heat-exchanging loop, low-temperature heat exchange circuit, electric power storage Pond group, inverter and frequency converter, backpressure regulation blower；The radiator is connected with engine, and radiator will be sent out by cooling water The heat of motivation is transferred on radiator, and the surface radiating for passing through radiator；The tail gas of engine successively passes through backpressure regulation Blower, high-temperature evaporator, cryogenic vaporizer cooling heel row 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 medium water 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 bulldozing device：It is simple and practical in structure, it can be operated by oscillating plate by soil pressure reality after soil-shifting It is convenient, and engine exhaust energy can secondary use, energy conservation and environmental protection；The off gas energy recovery system for devising engine, according to The difference of the heat recovery demand of different temperature zones and the evaporating temperature of medium and heat transfer characteristic, is adopted in high temperature section and low-temperature zone With different circulatory mediators, to improve the heat exchange efficiency of system on the whole；By the way that the lower low-temperature circulating of pressure is pumped Centre tap leads to the return water of the cooling engine cooling water of return water evaporator, can return simultaneously in recycling motor exhaust waste heat The heat of cooling water is received, and energy-saving effect is obvious；A kind of screen formula that suitable tail gas heat exchange uses-spiral heat exchange is redesigned Pipe, was not only convenient to clean, but also increase heat exchange efficiency；Pass through recovering energy part for by inverter and transducer drive Backpressure regulation blower, and the revolving speed of the feedback regulation backpressure regulation blower according to exhaust back pressure drive realizing without extraneous power supply By backpressure regulation and energy regenerating integration while dynamic blower, investment and space hold is greatly saved；Utilize high temperature multistage The intergrade steam extraction of turbo-expander, the steam extraction of this part are expanded by one section in high temperature multistage expansion turbine Journey is heated into the medium R245fa before low temperature multistage expanding machine using its remaining heat, on the one hand can be guaranteed Effective vaporization of R245fa, on the other hand can be improved the mechanical efficiency in low-temperature expansion circuit, avoids cold source energy, to improve The whole efficiency of energy recycle device；Coaxially connected between low temperature multistage expanding machine and high temperature multistage expansion turbine by shaft coupling It connects, at the initial stage of system starting, since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit is prior in high temperature heat-exchanging loop Water reach vapourizing temperature, low temperature multistage expanding machine starts first, while passing through shaft coupling drive high temperature multistage expansion turbine Low speed rotates in advance, can effectively reduce the starting pressure of high temperature multistage expansion turbine in this way, shortens the starting time, stops in system When only, the coasting operation first of high temperature multistage expansion turbine is slowed down, while driving low temperature multistage expanding machine to slow down by shaft coupling, to subtract The idling time of few cryogenic expansion machine primarily serves at this time since the medium temperature in stopped process in expanding machine is also relatively high The air blast friction for reducing low temperature multistage expanding machine, the effect for preventing blade from overheating；According to inlet valve tune under different flow rate working conditions It saves characteristic and the considerations of restriction loss, devises the control mode that a kind of revolving speed and inlet valve combine, reducing restriction loss While maintain the stability of adjusting.

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 bulldozing device；

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；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；Driver's cabin -24；Hydraulic stem -25；Soil-shifting bucket -26；Crossbeam -27；Column -28；Oscillating plate -29；Drive crawler belt -30.

Specific embodiment

The invention will be further described with the following Examples.

Embodiment 1：

A kind of high-performance bulldozing device as shown in Figure 1, including driver's cabin 24, hydraulic stem 25, bulldoze bucket 26, crossbeam 27, Column 28, oscillating plate 29, driving crawler belt 30 and engine power recyclable device, the soil-shifting bucket 26 is by hydraulic stem 25 and drives Room 24 is connected, and crossbeam 27 is located at 25 lower section of hydraulic stem, and one end and soil-shifting bucket 26 are hinged；One end of column 28 is hinged on institute It states on crossbeam 27, the other end is connected with oscillating plate 29, and vibration motor (not shown) is provided in oscillating plate 29；Drive crawler belt 30 are 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 medium water 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, regulating valve is according to the R245fa temperature after intermediate extraction superheater 12 Pressure feedback in feedback and high temperature multistage expansion turbine 7, for adjusting the flow of intergrade steam extraction, when intermediate extraction overheats When R245fa temperature feedback value after device 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 of setting, Automatically the aperture of big regulating valve is turned down or opens, while when the pressure feedback value in high temperature multistage expansion turbine 7 is less than setting High temperature multistage expansion turbine 7 in pressure atresia value when, automatic blocking regulating valve opens big (it is forbidden to continue out greatly), with It prevents the power output of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and sets Pressure atresia value in fixed high temperature multistage expansion turbine 7 is artificially set according to different concrete conditions by the method for experiment Fixed, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, high temperature is taken to steam 3/4 that the distance between device 5 and cryogenic vaporizer 6 L are exhaust pipe road overall length is sent out, high temperature multistage expansion turbine 7 is 3 grades Expanding machine, intergrade steam extraction are 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.

It is simple and practical in structure in the bulldozing device of this embodiment, it can be grasped by oscillating plate by soil pressure reality after soil-shifting Facilitate, and engine exhaust energy can secondary use, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to not The difference of synthermal section of heat recovery demand and the evaporating temperature of medium and heat transfer characteristic is used in high temperature section and low-temperature zone Different circulatory mediator, to improve the heat exchange efficiency of system on the whole；By will be in pressure lower low-temperature circulating pump Between tap lead to the return water of the cooling engine cooling water of return water evaporator 9, can be returned simultaneously in recycling motor exhaust waste heat The heat of cooling water is received, and energy-saving effect is obvious；A kind of screen formula that suitable tail gas heat exchange uses-spiral heat exchange is redesigned Pipe, was not only convenient to clean, but also increase heat exchange efficiency；Pass through recovering energy part for driving by inverter and frequency converter 15 Dynamic backpressure regulation blower 14, and the revolving speed of the feedback regulation backpressure regulation blower 14 according to exhaust back pressure are being realized without the external world By backpressure regulation and energy regenerating integration while power drives blower, investment and space hold is greatly saved；Utilize height The intergrade steam extraction of warm multistage expansion turbine 7, the steam extraction of this part pass through one section in high temperature multistage expansion turbine 7 Expansion process is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can be protected The effective vaporization for demonstrate,proving R245fa, on the other hand can be improved the mechanical efficiency in low-temperature expansion circuit, avoids cold source energy, to mention The whole efficiency of high-energy recyclable device；Pass through shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 Coaxially connected, at the initial stage of system starting, since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit exchanges heat prior to high temperature Water in circuit reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage thoroughly by shaft coupling 19 Flat 7 low speed of expanding machine rotates in advance, can effectively reduce the starting pressure of high temperature multistage expansion turbine 7 in this way, when shortening starting Between, when system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage by shaft coupling 19 Expanding machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, since the medium temperature in stopped process in expanding machine also compares It is higher, the air blast friction for reducing low temperature multistage expanding machine 8 is primarily served at this time, the effect for preventing blade from overheating；According to different Inlet valve control characteristic and the considerations of restriction loss under flow rate working conditions devises the controlling party that a kind of revolving speed and inlet valve combine Formula is reducing the stability that adjusting is maintained while restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L It is the 3/4 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 3 grades of expanding machines, and intergrade steam extraction is derived from high temperature multistage The 2nd grade of turbo-expander 7, heat recovery efficiency 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 medium water 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, regulating valve is according to the R245fa temperature after intermediate extraction superheater 12 Pressure feedback in feedback and high temperature multistage expansion turbine 7, for adjusting the flow of intergrade steam extraction, when intermediate extraction overheats When R245fa temperature feedback value after device 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 of setting, Automatically the aperture of big regulating valve is turned down or opens, while when the pressure feedback value in high temperature multistage expansion turbine 7 is less than setting High temperature multistage expansion turbine 7 in pressure atresia value when, automatic blocking regulating valve opens big (it is forbidden to continue out greatly), with It prevents the power output of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and sets Pressure atresia value in fixed high temperature multistage expansion turbine 7 is artificially set according to different concrete conditions by the method for experiment Fixed, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, high temperature is taken to steam 2/3 that the distance between device 5 and cryogenic vaporizer 6 L are exhaust pipe road overall length is sent out, high temperature multistage expansion turbine 7 is 4 grades Expanding machine, intergrade steam extraction are derived from the 2nd grade of high temperature multistage expansion turbine.

It is simple and practical in structure in the bulldozing device of this embodiment, it can be grasped by oscillating plate by soil pressure reality after soil-shifting Facilitate, and engine exhaust energy can secondary use, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to not The difference of synthermal section of heat recovery demand and the evaporating temperature of medium and heat transfer characteristic is used in high temperature section and low-temperature zone Different circulatory mediator, to improve the heat exchange efficiency of system on the whole；By will be in pressure lower low-temperature circulating pump Between tap lead to the return water of the cooling engine cooling water of return water evaporator 9, can be returned simultaneously in recycling motor exhaust waste heat The heat of cooling water is received, and energy-saving effect is obvious；A kind of screen formula that suitable tail gas heat exchange uses-spiral heat exchange is redesigned Pipe, was not only convenient to clean, but also increase heat exchange efficiency；Pass through recovering energy part for driving by inverter and frequency converter 15 Dynamic backpressure regulation blower 14, and the revolving speed of the feedback regulation backpressure regulation blower 14 according to exhaust back pressure are being realized without the external world By backpressure regulation and energy regenerating integration while power drives blower, investment and space hold is greatly saved；Utilize height The intergrade steam extraction of warm multistage expansion turbine 7, the steam extraction of this part pass through one section in high temperature multistage expansion turbine 7 Expansion process is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can be protected The effective vaporization for demonstrate,proving R245fa, on the other hand can be improved the mechanical efficiency in low-temperature expansion circuit, avoids cold source energy, to mention The whole efficiency of high-energy recyclable device；Pass through shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 Coaxially connected, at the initial stage of system starting, since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit exchanges heat prior to high temperature Water in circuit reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage thoroughly by shaft coupling 19 Flat 7 low speed of expanding machine rotates in advance, can effectively reduce the starting pressure of high temperature multistage expansion turbine 7 in this way, when shortening starting Between, when system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage by shaft coupling 19 Expanding machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, since the medium temperature in stopped process in expanding machine also compares It is higher, the air blast friction for reducing low temperature multistage expanding machine 8 is primarily served at this time, the effect for preventing blade from overheating；According to different Inlet valve control characteristic and the considerations of restriction loss under flow rate working conditions devises the controlling party that a kind of revolving speed and inlet valve combine Formula is reducing the stability that adjusting is maintained while restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L It is the 2/3 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 4 grades of expanding machines, and intergrade steam extraction is derived from high temperature multistage The 2nd grade of turbo-expander 7, heat recovery efficiency 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 medium water 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, regulating valve is according to the R245fa temperature after intermediate extraction superheater 12 Pressure feedback in feedback and high temperature multistage expansion turbine 7, for adjusting the flow of intergrade steam extraction, when intermediate extraction overheats When R245fa temperature feedback value after device 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 of setting, Automatically the aperture of big regulating valve is turned down or opens, while when the pressure feedback value in high temperature multistage expansion turbine 7 is less than setting High temperature multistage expansion turbine 7 in pressure atresia value when, automatic blocking regulating valve opens big (it is forbidden to continue out greatly), with It prevents the power output of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and sets Pressure atresia value in fixed high temperature multistage expansion turbine 7 is artificially set according to different concrete conditions by the method for experiment Fixed, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, high temperature is taken to steam 1/2 that the distance between device 5 and cryogenic vaporizer 6 L are exhaust pipe road overall length is sent out, high temperature multistage expansion turbine 7 is 5 grades Expanding machine, intergrade steam extraction are derived from the 3rd level of high temperature multistage expansion turbine.

It is simple and practical in structure in the bulldozing device of this embodiment, it can be grasped by oscillating plate by soil pressure reality after soil-shifting Facilitate, and engine exhaust energy can secondary use, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to not The difference of synthermal section of heat recovery demand and the evaporating temperature of medium and heat transfer characteristic is used in high temperature section and low-temperature zone Different circulatory mediator, to improve the heat exchange efficiency of system on the whole；By will be in pressure lower low-temperature circulating pump Between tap lead to the return water of the cooling engine cooling water of return water evaporator 9, can be returned simultaneously in recycling motor exhaust waste heat The heat of cooling water is received, and energy-saving effect is obvious；A kind of screen formula that suitable tail gas heat exchange uses-spiral heat exchange is redesigned Pipe, was not only convenient to clean, but also increase heat exchange efficiency；Pass through recovering energy part for driving by inverter and frequency converter 15 Dynamic backpressure regulation blower 14, and the revolving speed of the feedback regulation backpressure regulation blower 14 according to exhaust back pressure are being realized without the external world By backpressure regulation and energy regenerating integration while power drives blower, investment and space hold is greatly saved；Utilize height The intergrade steam extraction of warm multistage expansion turbine 7, the steam extraction of this part pass through one section in high temperature multistage expansion turbine 7 Expansion process is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can be protected The effective vaporization for demonstrate,proving R245fa, on the other hand can be improved the mechanical efficiency in low-temperature expansion circuit, avoids cold source energy, to mention The whole efficiency of high-energy recyclable device；Pass through shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 Coaxially connected, at the initial stage of system starting, since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit exchanges heat prior to high temperature Water in circuit reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage thoroughly by shaft coupling 19 Flat 7 low speed of expanding machine rotates in advance, can effectively reduce the starting pressure of high temperature multistage expansion turbine 7 in this way, when shortening starting Between, when system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage by shaft coupling 19 Expanding machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, since the medium temperature in stopped process in expanding machine also compares It is higher, the air blast friction for reducing low temperature multistage expanding machine 8 is primarily served at this time, the effect for preventing blade from overheating；According to different Inlet valve control characteristic and the considerations of restriction loss under flow rate working conditions devises the controlling party that a kind of revolving speed and inlet valve combine Formula is reducing the stability that adjusting is maintained while restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L It is the 1/2 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 5 grades of expanding machines, and intergrade steam extraction is derived from high temperature multistage The 3rd level of turbo-expander 7, heat recovery efficiency improve 5%, achieve 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 medium water 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, regulating valve is according to the R245fa temperature after intermediate extraction superheater 12 Pressure feedback in feedback and high temperature multistage expansion turbine 7, for adjusting the flow of intergrade steam extraction, when intermediate extraction overheats When R245fa temperature feedback value after device 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 of setting, Automatically the aperture of big regulating valve is turned down or opens, while when the pressure feedback value in high temperature multistage expansion turbine 7 is less than setting High temperature multistage expansion turbine 7 in pressure atresia value when, automatic blocking regulating valve opens big (it is forbidden to continue out greatly), with It prevents the power output of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and sets Pressure atresia value in fixed high temperature multistage expansion turbine 7 is artificially set according to different concrete conditions by the method for experiment Fixed, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, high temperature is taken to steam 2/5 that the distance between device 5 and cryogenic vaporizer 6 L are exhaust pipe road overall length is sent out, high temperature multistage expansion turbine 7 is 5 grades Expanding machine, intergrade steam extraction are derived from the 2nd grade of high temperature multistage expansion turbine.

It is simple and practical in structure in the bulldozing device of this embodiment, it can be grasped by oscillating plate by soil pressure reality after soil-shifting Facilitate, and engine exhaust energy can secondary use, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to not The difference of synthermal section of heat recovery demand and the evaporating temperature of medium and heat transfer characteristic is used in high temperature section and low-temperature zone Different circulatory mediator, to improve the heat exchange efficiency of system on the whole；By will be in pressure lower low-temperature circulating pump Between tap lead to the return water of the cooling engine cooling water of return water evaporator 9, can be returned simultaneously in recycling motor exhaust waste heat The heat of cooling water is received, and energy-saving effect is obvious；A kind of screen formula that suitable tail gas heat exchange uses-spiral heat exchange is redesigned Pipe, was not only convenient to clean, but also increase heat exchange efficiency；Pass through recovering energy part for driving by inverter and frequency converter 15 Dynamic backpressure regulation blower 14, and the revolving speed of the feedback regulation backpressure regulation blower 14 according to exhaust back pressure are being realized without the external world By backpressure regulation and energy regenerating integration while power drives blower, investment and space hold is greatly saved；Utilize height The intergrade steam extraction of warm multistage expansion turbine 7, the steam extraction of this part pass through one section in high temperature multistage expansion turbine 7 Expansion process is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can be protected The effective vaporization for demonstrate,proving R245fa, on the other hand can be improved the mechanical efficiency in low-temperature expansion circuit, avoids cold source energy, to mention The whole efficiency of high-energy recyclable device；Pass through shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 Coaxially connected, at the initial stage of system starting, since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit exchanges heat prior to high temperature Water in circuit reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage thoroughly by shaft coupling 19 Flat 7 low speed of expanding machine rotates in advance, can effectively reduce the starting pressure of high temperature multistage expansion turbine 7 in this way, when shortening starting Between, when system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage by shaft coupling 19 Expanding machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, since the medium temperature in stopped process in expanding machine also compares It is higher, the air blast friction for reducing low temperature multistage expanding machine 8 is primarily served at this time, the effect for preventing blade from overheating；According to different Inlet valve control characteristic and the considerations of restriction loss under flow rate working conditions devises the controlling party that a kind of revolving speed and inlet valve combine Formula is reducing the stability that adjusting is maintained while restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L It is the 2/5 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 5 grades of expanding machines, and intergrade steam extraction is derived from high temperature multistage The 2nd grade of turbo-expander 7, heat recovery efficiency 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 medium water 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, regulating valve is according to the R245fa temperature after intermediate extraction superheater 12 Pressure feedback in feedback and high temperature multistage expansion turbine 7, for adjusting the flow of intergrade steam extraction, when intermediate extraction overheats When R245fa temperature feedback value after device 12 is more than or less than the R245fa temperature value after the intermediate extraction superheater 12 of setting, Automatically the aperture of big regulating valve is turned down or opens, while when the pressure feedback value in high temperature multistage expansion turbine 7 is less than setting High temperature multistage expansion turbine 7 in pressure atresia value when, automatic blocking regulating valve opens big (it is forbidden to continue out greatly), with It prevents the power output of high temperature multistage expansion turbine 7 too low, the R245fa temperature value after the intermediate extraction superheater 12 of setting and sets Pressure atresia value in fixed high temperature multistage expansion turbine 7 is artificially set according to different concrete conditions by the method for experiment Fixed, the intergrade steam extraction after heating flows back into high temperature heat exchange cycle circuit (not shown).In this embodiment, high temperature is taken to steam 2/7 that the distance between device 5 and cryogenic vaporizer 6 L are exhaust pipe road overall length is sent out, high temperature multistage expansion turbine 7 is 6 grades Expanding machine, intergrade steam extraction are derived from the 3rd level of high temperature multistage expansion turbine.

It is simple and practical in structure in the bulldozing device of this embodiment, it can be grasped by oscillating plate by soil pressure reality after soil-shifting Facilitate, and engine exhaust energy can secondary use, energy conservation and environmental protection；The exhaust gas recovery system for devising engine, according to not The difference of synthermal section of heat recovery demand and the evaporating temperature of medium and heat transfer characteristic is used in high temperature section and low-temperature zone Different circulatory mediator, to improve the heat exchange efficiency of system on the whole；By will be in pressure lower low-temperature circulating pump Between tap lead to the return water of the cooling engine cooling water of return water evaporator 9, can be returned simultaneously in recycling motor exhaust waste heat The heat of cooling water is received, and energy-saving effect is obvious；A kind of screen formula that suitable tail gas heat exchange uses-spiral heat exchange is redesigned Pipe, was not only convenient to clean, but also increase heat exchange efficiency；Pass through recovering energy part for driving by inverter and frequency converter 15 Dynamic backpressure regulation blower 14, and the revolving speed of the feedback regulation backpressure regulation blower 14 according to exhaust back pressure are being realized without the external world By backpressure regulation and energy regenerating integration while power drives blower, investment and space hold is greatly saved；Utilize height The intergrade steam extraction of warm multistage expansion turbine 7, the steam extraction of this part pass through one section in high temperature multistage expansion turbine 7 Expansion process is heated into the medium R245fa before low temperature multistage expanding machine 8 using its remaining heat, on the one hand can be protected The effective vaporization for demonstrate,proving R245fa, on the other hand can be improved the mechanical efficiency in low-temperature expansion circuit, avoids cold source energy, to mention The whole efficiency of high-energy recyclable device；Pass through shaft coupling 19 between low temperature multistage expanding machine 8 and high temperature multistage expansion turbine 7 Coaxially connected, at the initial stage of system starting, since exhaust temperature is lower, the R245fa in low-temperature heat exchange circuit exchanges heat prior to high temperature Water in circuit reaches vapourizing temperature, and low temperature multistage expanding machine starts first, while driving high temperature multistage thoroughly by shaft coupling 19 Flat 7 low speed of expanding machine rotates in advance, can effectively reduce the starting pressure of high temperature multistage expansion turbine 7 in this way, when shortening starting Between, when system stops, the coasting operation first of high temperature multistage expansion turbine 7 is slowed down, while driving low temperature multistage by shaft coupling 19 Expanding machine 8 slows down, to reduce the idling time of cryogenic expansion machine 8, since the medium temperature in stopped process in expanding machine also compares It is higher, the air blast friction for reducing low temperature multistage expanding machine 8 is primarily served at this time, the effect for preventing blade from overheating；According to different Inlet valve control characteristic and the considerations of restriction loss under flow rate working conditions devises the controlling party that a kind of revolving speed and inlet valve combine Formula is reducing the stability that adjusting is maintained while restriction loss.The distance between high-temperature evaporator 5 and cryogenic vaporizer 6 L It is the 2/7 of exhaust pipe road overall length, high temperature multistage expansion turbine 7 is 6 grades of expanding machines, and intergrade steam extraction is derived from high temperature multistage The 3rd level of turbo-expander 7, heat recovery efficiency improve 6%, achieve 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 high-performance bulldozing device, characterized in that including driver's cabin, hydraulic stem, bulldoze bucket, crossbeam, column, oscillating plate, Crawler belt and engine power recyclable device are driven, the soil-shifting bucket is connected by hydraulic stem with driver's cabin, and crossbeam is located at hydraulic stem Lower section, one end and soil-shifting bucket are hinged；One end of column is hinged on the crossbeam, and the other end is connected with oscillating plate, vibration Vibration motor is provided in movable plate；Drive crawler belt by engine driving, the engine power recyclable device starts for recycling The energy of tail gas 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 is connected with engine, and radiator will be started by cooling water The heat of machine is transferred on radiator, and the surface radiating for passing through radiator；The tail gas of engine successively passes through backpressure regulation wind Machine, high-temperature evaporator, cryogenic vaporizer cooling heel row 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 medium water 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；

The low temperature multistage expanding machine and high temperature multistage expansion turbine pass through high temperature inlet valve respectively and low temperature inlet valve is adjusted 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, when When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are greater than 30% respective metered flow, high temperature inlet valve or low temperature are into vapour Valve keeps standard-sized sheet to avoid restriction loss, changes expanding machine by adjusting the revolving speed of high temperature circulation pump or low-temperature circulating pump Power output；When high temperature heat-exchanging loop or low-temperature heat exchange circuit cycle flow are less than 30% respective metered flow, high temperature circulation is kept The revolving speed of pump or low-temperature circulating pump is constant, and going out for expanding machine is adjusted by the aperture of control high temperature inlet valve or low temperature inlet valve Power.