CN105862947A

CN105862947A - Bridge construction device based on thermal cycle

Info

Publication number: CN105862947A
Application number: CN201610188286.XA
Authority: CN
Inventors: 时建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2016-08-17

Abstract

The invention discloses a bridge construction device based on thermal cycle. The bridge construction device based on thermal cycle comprises an operating room, crawler belts, a suspension arm, a lifting hook, an upright rod, an illumination lamp, an excavation arm and an engine energy recovery device. The illumination lamp is connected with the operating room through the upright rod; the lifting hook is fixedly connected to one end of the construction device through the suspension arm, and the excavation arm is disposed at the other end of the construction device; the crawler belts are driven through an engine; and the engine energy recovery device is used for recovery of heat of engine tail gas. The bridge construction device based on thermal cycle is simple in simple and practical; an excavator and crane are perfectly integrated, so that the economic cost is greatly reduced; meanwhile, multiple functions are achieved, the practicability is high; the bridge construction device is flexible, easy to change and suitable for bridge and road construction; and the engine waste gas energy can be reutilized, so that energy saving and environment protection are achieved.

Description

A kind of bridge construction device based on thermal cycle

Technical field

The present invention relates to field of bridge construction, be specifically related to a kind of bridge construction device based on thermal cycle.

Background technology

Along with the exhibition of breaking out of communication paulin, increase year by year based on the high-grade highway quantity of highway, Class I highway, China Highway Cause starts into people to build new stage of attaching most importance to of high-grade highway, and road and bridge, typically by roadbed, road surface, bridge, A few major part composition such as Tunnel Engineering and traffic engineering facilities, during road and bridge construction, can use many construction equipment, To improve operating efficiency, traditional construction machinery build is huge, function singleness, it is impossible to many-side meets construction requirement, thus causes The waste of the energy, also have impact on efficiency of construction.It is the most complicated, integrated often to there is structure in the most existing river regulation device Degree is relatively low, energy consumption higher-energy cannot the problem such as secondary utilization.

Summary of the invention

For the problems referred to above, the present invention provides a kind of bridge construction device based on thermal cycle.

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

A kind of bridge construction device based on thermal cycle, is characterized in that, including operating room, crawler belt, arm, suspension hook, vertical rod, Illuminating lamp, digging arm and engine power retracting device, described illuminating lamp is connected with operating room by vertical rod, and suspension hook passes through arm Being fixed on one end of this constructing device, described digging arm is arranged on the other end；Described crawler belt is driven by engine, starts function Amount retracting device is for reclaiming the heat of motor exhaust, and it includes that radiator, engine, backwater evaporimeter, high temperature heat exchange are returned Road, low-temperature heat exchange loop, batteries, inverter and frequency converter, backpressure regulation blower fan；Described radiator is connected with engine, Radiator leads to supercooled water to be transferred to the heat of engine on radiator, and by the surface radiating of radiator；The tail of engine Gas sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air；

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

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

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

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

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

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

The beneficial effect of this bridge construction device: simple and practical, can combine together excavator and crane perfection, greatly Reduce financial cost, function is many simultaneously, practical, flexible, it is adaptable to bridge and road construction；And its Motivation exhaust energy can utilize by secondary, energy-conserving and environment-protective；Devise the off gas energy recovery system of engine, according to different temperatures section Heat recovery demand and the evaporating temperature of medium and the difference of heat transfer characteristic, use different circulations in high temperature section with low-temperature zone Medium, thus improve the heat exchange efficiency of system on the whole；By low-temperature circulating pump centre tap relatively low for pressure is led to The backwater of backwater evaporimeter cooling engine cooling water, it is possible to simultaneously reclaim the heat of cooling water at recovery motor exhaust used heat, And energy-saving effect is obvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, again Add heat exchange efficiency；By part recovered energy for by inverter and transducer drive backpressure regulation blower fan, and The rotating speed of the feedback regulation backpressure regulation blower fan according to exhaust back pressure, adjusts back pressure while realizing without driven by external power blower fan Joint and energy regenerating integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine is drawn gas, This part draw gas in high temperature multistage expansion turbine through one section of expansion process, utilize its remaining heat heat into Enter the medium R245fa before low temperature multistage decompressor, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve The mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage is swollen Shaft coupling is passed through coaxially connected, at the initial stage that system starts, due to exhaust temperature relatively between swollen machine and high temperature multistage expansion turbine Low, the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage decompressor is first Start, drive high temperature multistage expansion turbine low speed to rotate in advance by shaft coupling simultaneously, so can effectively reduce high temperature multistage The startup pressure of flat decompressor, shortens the startup time, and when system stops, the first coasting operation of high temperature multistage expansion turbine is slowed down, Drive low temperature multistage decompressor to slow down, to reduce the idling time of cryogenic expansion machine, due in stopped process by shaft coupling simultaneously Medium temperature in decompressor is the highest, now primarily serves the air blast friction reducing low temperature multistage decompressor, prevents blade mistake The effect of heat；According to inlet valve control characteristic under different flow rate working conditions and the consideration of restriction loss, devise a kind of rotating speed and enter The control mode that steam valve combines, maintains the stability of regulation while reducing restriction loss.

Accompanying drawing explanation

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

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

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

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

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

Reference: radiator-1；Engine-2；Warm condenser-3；Low-temperature condenser-4；High-temperature evaporator-5；Low temperature steams Send out device-6；High temperature multistage expansion turbine-7；Low temperature multistage decompressor-8；Backwater evaporimeter-9；High temperature circulation pump-10；Low temperature Circulating pump-11；Intermediate extraction superheater-12；Batteries-13；Backpressure regulation blower fan-14；Inverter and frequency converter-15；Regulation Valve-16；Screen formula heat exchanger tube-17；Spiral heat exchange tube-18；Shaft coupling-19；Procapsid-20；Back casing-21；Bolt-22；Blowdown Mouth-23；Operating room-24；Crawler belt-25；Arm-26；Suspension hook-27；Vertical rod-28；Illuminating lamp-29；Digging arm-30.

Detailed description of the invention

The invention will be further described with the following Examples.

Embodiment 1:

A kind of based on thermal cycle bridge construction device as shown in Figure 1, including operating room 24, crawler belt 25, arm 26, hangs Hook 27, vertical rod 28, illuminating lamp 29, digging arm 30 and engine power retracting device, described illuminating lamp 29 is by vertical rod 28 Being connected with operating room 24, suspension hook 27 is fixed on one end of this constructing device by arm 26, and described digging arm 30 is arranged on The other end；Described crawler belt 25 is driven by engine 2.

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

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

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

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

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

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

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

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

In the bridge construction device of this embodiment, excavator and crane perfection can be combined together, greatly reduce economy Cost, function is many simultaneously, practical, flexible, it is adaptable to bridge and road construction；And its engine exhaust energy Can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, according to the heat recovery demand of different temperatures section with And the evaporating temperature of medium and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus from entirety On improve the heat exchange efficiency of system；Cool down by low-temperature circulating pump centre tap relatively low for pressure is led to backwater evaporimeter 9 The backwater of engine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is bright Aobvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency； By recovering energy part for driving backpressure regulation blower fan 14 by inverter and frequency converter 15, and according to the exhaust back of the body The rotating speed of the feedback regulation backpressure regulation blower fan 14 of pressure, by backpressure regulation and energy while realizing without driven by external power blower fan Reclaim integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this portion Point draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat to heat entrance Medium R245fa before low temperature multistage decompressor 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve The mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage is swollen Shaft coupling 19 is passed through coaxially connected, at the initial stage that system starts, due to tail gas between swollen machine 8 and high temperature multistage expansion turbine 7 Temperature is relatively low, and the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expands Prow first starts, and drives high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce The startup pressure of high temperature multistage expansion turbine 7, shortens the startup time, when system stops, and high temperature multistage expansion turbine 7 First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down, to reduce the coasting operation of cryogenic expansion machine 8 by shaft coupling 19 simultaneously Time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage decompressor 8 Air blast friction, prevent the effect that blade is overheated；According to examining of inlet valve control characteristic under different flow rate working conditions and restriction loss Consider, devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain stablizing of regulation Property.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 3/4 of exhaust pipe road overall length, high temperature multistage turbine Decompressor 7 is 3 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency carries High by 4%, achieve beyond thought effect.

Embodiment 2:

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

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

In the bridge construction device of this embodiment, excavator and crane perfection can be combined together, greatly reduce economy Cost, function is many simultaneously, practical, flexible, it is adaptable to bridge and road construction；And its engine exhaust energy Can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, according to the heat recovery demand of different temperatures section with And the evaporating temperature of medium and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus from entirety On improve the heat exchange efficiency of system；Cool down by low-temperature circulating pump centre tap relatively low for pressure is led to backwater evaporimeter 9 The backwater of engine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is bright Aobvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency； By recovering energy part for driving backpressure regulation blower fan 14 by inverter and frequency converter 15, and according to the exhaust back of the body The rotating speed of the feedback regulation backpressure regulation blower fan 14 of pressure, by backpressure regulation and energy while realizing without driven by external power blower fan Reclaim integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this portion Point draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat to heat entrance Medium R245fa before low temperature multistage decompressor 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve The mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage is swollen Shaft coupling 19 is passed through coaxially connected, at the initial stage that system starts, due to tail gas between swollen machine 8 and high temperature multistage expansion turbine 7 Temperature is relatively low, and the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expands Prow first starts, and drives high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce The startup pressure of high temperature multistage expansion turbine 7, shortens the startup time, when system stops, and high temperature multistage expansion turbine 7 First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down, to reduce the coasting operation of cryogenic expansion machine 8 by shaft coupling 19 simultaneously Time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage decompressor 8 Air blast friction, prevent the effect that blade is overheated；According to examining of inlet valve control characteristic under different flow rate working conditions and restriction loss Consider, devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain stablizing of regulation Property.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/3 of exhaust pipe road overall length, high temperature multistage turbine Decompressor 7 is 4 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency carries High by 4.5%, achieve beyond thought effect.

Embodiment 3:

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

In the bridge construction device of this embodiment, excavator and crane perfection can be combined together, greatly reduce economy Cost, function is many simultaneously, practical, flexible, it is adaptable to bridge and road construction；And its engine exhaust energy Can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, according to the heat recovery demand of different temperatures section with And the evaporating temperature of medium and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus from entirety On improve the heat exchange efficiency of system；Cool down by low-temperature circulating pump centre tap relatively low for pressure is led to backwater evaporimeter 9 The backwater of engine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is bright Aobvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency； By recovering energy part for driving backpressure regulation blower fan 14 by inverter and frequency converter 15, and according to the exhaust back of the body The rotating speed of the feedback regulation backpressure regulation blower fan 14 of pressure, by backpressure regulation and energy while realizing without driven by external power blower fan Reclaim integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this portion Point draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat to heat entrance Medium R245fa before low temperature multistage decompressor 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve The mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage is swollen Shaft coupling 19 is passed through coaxially connected, at the initial stage that system starts, due to tail gas between swollen machine 8 and high temperature multistage expansion turbine 7 Temperature is relatively low, and the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expands Prow first starts, and drives high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce The startup pressure of high temperature multistage expansion turbine 7, shortens the startup time, when system stops, and high temperature multistage expansion turbine 7 First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down, to reduce the coasting operation of cryogenic expansion machine 8 by shaft coupling 19 simultaneously Time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage decompressor 8 Air blast friction, prevent the effect that blade is overheated；According to examining of inlet valve control characteristic under different flow rate working conditions and restriction loss Consider, devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain stablizing of regulation Property.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 1/2 of exhaust pipe road overall length, high temperature multistage turbine Decompressor 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency carries High by 5%, achieve beyond thought effect.

Embodiment 4:

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

In the bridge construction device of this embodiment, excavator and crane perfection can be combined together, greatly reduce economy Cost, function is many simultaneously, practical, flexible, it is adaptable to bridge and road construction；And its engine exhaust energy Can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, according to the heat recovery demand of different temperatures section with And the evaporating temperature of medium and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus from entirety On improve the heat exchange efficiency of system；Cool down by low-temperature circulating pump centre tap relatively low for pressure is led to backwater evaporimeter 9 The backwater of engine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is bright Aobvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency； By recovering energy part for driving backpressure regulation blower fan 14 by inverter and frequency converter 15, and according to the exhaust back of the body The rotating speed of the feedback regulation backpressure regulation blower fan 14 of pressure, by backpressure regulation and energy while realizing without driven by external power blower fan Reclaim integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this portion Point draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat to heat entrance Medium R245fa before low temperature multistage decompressor 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve The mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage is swollen Shaft coupling 19 is passed through coaxially connected, at the initial stage that system starts, due to tail gas between swollen machine 8 and high temperature multistage expansion turbine 7 Temperature is relatively low, and the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expands Prow first starts, and drives high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce The startup pressure of high temperature multistage expansion turbine 7, shortens the startup time, when system stops, and high temperature multistage expansion turbine 7 First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down, to reduce the coasting operation of cryogenic expansion machine 8 by shaft coupling 19 simultaneously Time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage decompressor 8 Air blast friction, prevent the effect that blade is overheated；According to examining of inlet valve control characteristic under different flow rate working conditions and restriction loss Consider, devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain stablizing of regulation Property.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/5 of exhaust pipe road overall length, high temperature multistage turbine Decompressor 7 is 5 grades of decompressors, and intergrade is drawn gas and taken from the 2nd grade of high temperature multistage expansion turbine 7, and heat recovery efficiency carries High by 5.5%, achieve beyond thought effect.

Embodiment 5:

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

In the bridge construction device of this embodiment, excavator and crane perfection can be combined together, greatly reduce economy Cost, function is many simultaneously, practical, flexible, it is adaptable to bridge and road construction；And its engine exhaust energy Can utilize by secondary, energy-conserving and environment-protective；Devise the exhaust gas recovery system of engine, according to the heat recovery demand of different temperatures section with And the evaporating temperature of medium and the difference of heat transfer characteristic, use different circulatory mediators in high temperature section with low-temperature zone, thus from entirety On improve the heat exchange efficiency of system；Cool down by low-temperature circulating pump centre tap relatively low for pressure is led to backwater evaporimeter 9 The backwater of engine cooling water, it is possible to reclaim the heat of cooling water at recovery motor exhaust used heat simultaneously, and energy-saving effect is bright Aobvious；Redesign screen formula-spiral heat exchange tube that a kind of applicable tail gas heat exchange uses, be both convenient to clean, and added again heat exchange efficiency； By recovering energy part for driving backpressure regulation blower fan 14 by inverter and frequency converter 15, and according to the exhaust back of the body The rotating speed of the feedback regulation backpressure regulation blower fan 14 of pressure, by backpressure regulation and energy while realizing without driven by external power blower fan Reclaim integration, be greatly saved investment and space hold；The intergrade utilizing high temperature multistage expansion turbine 7 is drawn gas, this portion Point draw gas in high temperature multistage expansion turbine 7 through one section of expansion process, utilize its remaining heat to heat entrance Medium R245fa before low temperature multistage decompressor 8, on the one hand can ensure that effective vaporization of R245fa, on the other hand can improve The mechanical efficiency in low-temperature expansion loop, it is to avoid cold source energy, thus improve the whole efficiency of energy recycle device；Low temperature multistage is swollen Shaft coupling 19 is passed through coaxially connected, at the initial stage that system starts, due to tail gas between swollen machine 8 and high temperature multistage expansion turbine 7 Temperature is relatively low, and the R245fa in low-temperature heat exchange loop arrives vapourizing temperature prior to the water in high temperature heat-exchanging loop, and low temperature multistage expands Prow first starts, and drives high temperature multistage expansion turbine 7 low speed to rotate in advance by shaft coupling 19 simultaneously, so can effectively reduce The startup pressure of high temperature multistage expansion turbine 7, shortens the startup time, when system stops, and high temperature multistage expansion turbine 7 First coasting operation is slowed down, and drives low temperature multistage decompressor 8 to slow down, to reduce the coasting operation of cryogenic expansion machine 8 by shaft coupling 19 simultaneously Time, owing to the medium temperature in decompressor in stopped process is the highest, now primarily serve reduction low temperature multistage decompressor 8 Air blast friction, prevent the effect that blade is overheated；According to examining of inlet valve control characteristic under different flow rate working conditions and restriction loss Consider, devise a kind of rotating speed and control mode that inlet valve combines, while reducing restriction loss, maintain stablizing of regulation Property.Distance L between high-temperature evaporator 5 and cryogenic vaporizer 6 is the 2/7 of exhaust pipe road overall length, high temperature multistage turbine Decompressor 7 is 6 grades of decompressors, and intergrade is drawn gas and taken from the 3rd level of high temperature multistage expansion turbine 7, and heat recovery efficiency carries High by 6%, achieve beyond thought effect.

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

Claims

1. a bridge construction device based on thermal cycle, is characterized in that, including operating room, crawler belt, arm, suspension hook, vertical rod, Illuminating lamp, digging arm and engine power retracting device, described illuminating lamp is connected with operating room by vertical rod, and suspension hook passes through arm Being fixed on one end of this constructing device, described digging arm is arranged on the other end；Described crawler belt is driven by engine, starts function Amount retracting device is for reclaiming the heat of motor exhaust, and it includes that radiator, engine, backwater evaporimeter, high temperature heat exchange are returned Road, low-temperature heat exchange loop, batteries, inverter and frequency converter, backpressure regulation blower fan；Described radiator is connected with engine, Radiator leads to supercooled water to be transferred to the heat of engine on radiator, and by the surface radiating of radiator；The tail of engine Gas sequentially passes through backpressure regulation blower fan, high-temperature evaporator, cryogenic vaporizer cooling heel row to air；

A kind of bridge construction device based on thermal cycle the most according to claim 1, is characterized in that, described low temperature multistage is swollen Swollen machine and high temperature multistage expansion turbine are respectively by high temperature inlet valve and the respective throttle flow of low temperature air inlet valve regulation, the height of employing The stability of flow district of temperature inlet valve and low temperature air inlet valve is 30%～100% metered flow, when high temperature heat-exchanging loop or low-temperature heat exchange return Road circular flow more than 30% respective metered flow time, high temperature inlet valve or low temperature inlet valve holding standard-sized sheet to avoid restriction loss, Exerting oneself of decompressor is changed by the rotating speed of regulation high temperature circulation pump or low-temperature circulating pump；When high temperature heat-exchanging loop or low temperature change When hot loop circular flow is less than 30% respective metered flow, the rotating speed keeping high temperature circulation pump or low-temperature circulating pump is constant, passes through The aperture controlling high temperature inlet valve or low temperature inlet valve regulates exerting oneself of decompressor.