CN204386764U - A kind of system recycling afterheat of IC engine - Google Patents
A kind of system recycling afterheat of IC engine Download PDFInfo
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- CN204386764U CN204386764U CN201520008752.2U CN201520008752U CN204386764U CN 204386764 U CN204386764 U CN 204386764U CN 201520008752 U CN201520008752 U CN 201520008752U CN 204386764 U CN204386764 U CN 204386764U
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Abstract
The utility model discloses a kind of system recycling afterheat of IC engine, relates to energy technology field, is the problem that the overall efficiency of energy utilization solving distributed busbar protection is low.The system of described recycling afterheat of IC engine comprises: the second-kind absorption-type heat pump be connected with the jacket water circulating line of internal-combustion engine; At least two heat exchangers be connected with the exhaust smoke outlet of internal-combustion engine, on the softened water pipeline wherein having at least a heat exchanger to be arranged on to be communicated with the softened water entrance of described second-kind absorption-type heat pump, a heat exchanger is had at least to be connected with the softened water steam (vapor) outlet of second-kind absorption-type heat pump.The system of recycling afterheat of IC engine described in the utility model is applied in distributed busbar protection, recycle afterheat of IC engine by the cooperation of second-kind absorption-type heat pump and at least two heat exchangers, improve the overall efficiency of energy utilization of distributed busbar protection.
Description
Technical field
The utility model relates to energy technology field, particularly relates to a kind of system recycling afterheat of IC engine.
Background technique
Distributed busbar protection is a kind of close user side and provides the middle-size and small-size terminal energy supplying system of various forms energy directly to user, have that energy utilization rate is high, pollutant emission is few, close to user, power transmission and transformation loss is little and can provide the advantages such as multiple kinds of energy, thus obtains fast development in recent years.Cooling heating and power generation system is the main way of realization of distributed busbar protection, generally comprise power sub-system, for thermal sub-system, for refrigeration subsystem and corresponding control subsystem, the power equipment that wherein power sub-system adopts mainly contains steam turbine, gas turbine, internal-combustion engine, Stirling-electric hybrid and fuel cell etc.For the occasion of power generation needs at below 1MW, internal-combustion engine is the first-selection of cooling heating and power generation system power sub-system.
But a large amount of waste heat can be supervened during use internal-combustion engine, main manifestations is the waste heat of jacket water and the waste heat of flue gas, direct discharges for the currently used means of these waste heats, so can cause the waste of the energy and pollute the environment, and then causing the overall efficiency of energy utilization of distributed busbar protection low.
Model utility content
The purpose of this utility model is to provide a kind of system recycling afterheat of IC engine, the problem that the overall efficiency of energy utilization for solving distributed busbar protection is low.
To achieve these goals, the utility model provides following technological scheme:
Recycle a system for afterheat of IC engine, comprising:
Be communicated with the second-kind absorption-type heat pump on the jacket water circulating line of internal-combustion engine;
The softened water pipeline be communicated with the softened water entrance of described second-kind absorption-type heat pump;
At least two heat exchangers be communicated with the exhaust smoke outlet of described internal-combustion engine, and have at least a described heat exchanger to be arranged on described softened water pipeline, have at least a described heat exchanger to be communicated with the softened water steam (vapor) outlet of described second-kind absorption-type heat pump.
Preferably, the flue gas channel of each described heat exchanger is arranged in series.
Further, the quantity of described heat exchanger is two, and the temperature being wherein arranged on the heat exchanger on described softened water pipeline is lower than the temperature of the heat exchanger be communicated with the softened water steam (vapor) outlet of described second-kind absorption-type heat pump.
Preferably, the flue gas channel of each described heat exchanger is arranged in parallel.
Further, each flue gas branch pipe(tube) be communicated with the exhaust smoke outlet of described internal-combustion engine respectively at each described heat exchanger is respectively provided with a flue gas flow valve.
Preferably, the quantity of described heat exchanger is at least three, and the flue gas channel of heat exchanger described in one of them is connected with the flue gas channel of heat exchanger described at least one, and the flue gas channel of this heat exchanger is also in parallel with the flue gas channel of heat exchanger described at least one.
Preferably, described softened water pipeline is provided with softened water Flow valve and suction booster, and described softened water Flow valve is positioned at the upstream of described suction booster, described suction booster is positioned at the upstream of all described heat exchanger be arranged on described softened water pipeline.
Further, the system of described recycling afterheat of IC engine also comprises: for receiving the vapor flash device of the softened water steam of discharging from the heat exchanger be communicated with the softened water steam (vapor) outlet of described second-kind absorption-type heat pump, the drain opening of described vapor flash device is communicated with the water intake of described suction booster.
Further, the system of described recycling afterheat of IC engine also comprises: the exhaust heat boiler be communicated with the exhaust smoke outlet of described internal-combustion engine, and the flue gas after described residual heat boiler for exchanging heat is supplied to each described heat exchanger.
Further, the system of described recycling afterheat of IC engine also comprises softening water tank, and described softening water tank is connected with the jacket water entrance of described internal-combustion engine by moisturizing pipeline, and described moisturizing pipeline is provided with refill flow valve.
Preferably, the cooling water circulation pipeline of described second-kind absorption-type heat pump is provided with cooling unit.
In the system of the recycling afterheat of IC engine provided at the utility model, the waste heat of the jacket water of discharging from internal-combustion engine is recycled by second-kind absorption-type heat pump, the waste heat of the flue gas of discharging from internal-combustion engine is recycled by least two heat exchangers, decrease energy loss, therefore, when being provided with the system of above-mentioned recycling afterheat of IC engine in distributed busbar protection, jacket water waste heat and the fume afterheat of internal-combustion engine discharge can be made full use of, decrease energy loss, thus significantly improve the overall efficiency of energy utilization of distributed busbar protection.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms a part of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
A kind of annexation figure recycling afterheat of IC engine system that Fig. 1 provides for the utility model embodiment;
The annexation figure of the another kind recycling afterheat of IC engine system that Fig. 2 provides for the utility model embodiment;
The annexation figure of the another kind recycling afterheat of IC engine system that Fig. 3 provides for the utility model embodiment.
Reference character:
1-internal-combustion engine, 2-exhaust heat boiler,
3-vapor flash device, 4-softened water Flow valve,
5-suction booster, 6-second heat exchanger,
7-First Heat Exchanger, 8-second-kind absorption-type heat pump,
9-refill flow valve, 10-softening water tank,
11-cooling tower, 12-first flue gas flow valve,
13-second flue gas flow valve, 14-the 3rd heat exchanger.
Embodiment
In order to further illustrate the system of the recycling afterheat of IC engine that the utility model provides, be described in detail below in conjunction with Figure of description.
Refer to Fig. 1, Fig. 2 and Fig. 3, the system of the recycling afterheat of IC engine that the utility model embodiment provides comprises: second-kind absorption-type heat pump 8, at least two heat exchangers and multiple pipeline, wherein, second-kind absorption-type heat pump 8 is arranged on the jacket water circulating line of connection internal-combustion engine 1; The flue gas channel of at least two heat exchangers is communicated with the exhaust smoke outlet of internal-combustion engine, on the pipeline having at least a heat exchanger to be arranged on to be communicated with the softened water steam (vapor) outlet of second-kind absorption-type heat pump 8, on the softened water pipeline having at least a heat exchanger to be arranged on to be communicated with the softened water entrance of second-kind absorption-type heat pump 8.
In the system of above-mentioned recycling afterheat of IC engine, can be arranged in series between the flue gas channel of each heat exchanger, be arranged in parallel or series parallel connection mixing setting, embodiment is as follows:
Mode of execution one, is arranged in series between the flue gas channel of each heat exchanger.The quantity of heat exchanger includes but not limited to two, hereafter mode of execution one for convenience of description, for two heat exchangers series connection.Please continue to refer to Fig. 1, the flue gas channel of First Heat Exchanger 7 and the flue gas channel of the second heat exchanger 6 are arranged in series, First Heat Exchanger 7 is arranged on the pipeline that is communicated with the softened water steam (vapor) outlet of second-kind absorption-type heat pump 8, and the second heat exchanger 6 is arranged on the softened water pipeline that is communicated with the softened water entrance of second-kind absorption-type heat pump 8.When the system of the recycling afterheat of IC engine described in mode of execution one is in running order, comprise four work cycle, specific as follows:
Work cycle one, internal combustion engine cylinder jacket water circulation: the jacket water S12 discharged from the jacket water outlet of internal-combustion engine 1 enters second-kind absorption-type heat pump 8 by corresponding pipeline, for second-kind absorption-type heat pump 8 provides temperature after heat to reduce, jacket water S13 after cooling discharges from second-kind absorption-type heat pump 8, and get back in internal-combustion engine 1 by corresponding pipeline, cool with combustion motor 1.
Work cycle two, internal-combustion engine flue gas recirculation: the flue gas S01 of the exhaust smoke outlet discharge of internal-combustion engine 1 is successively through First Heat Exchanger 7 and the second heat exchanger 6; The flue gas S03 that after heat exchange, formation temperature reduces in First Heat Exchanger 7, flue gas S03 enters heat exchange again in the second heat exchanger 6, and the temperature of flue gas reduces further, and the flue gas S04 that last formation temperature is lower discharges.
Work cycle three, second-kind absorption-type heat pump circulates: second-kind absorption-type heat pump 8 relies on self thermodynamic property, the waste heat of the jacket water S12 utilizing the jacket water outlet of internal-combustion engine 1 to discharge, as driving heat source, makes softened water S05 direct boiling become saturated or fractional saturation softened water steam S08.
Work cycle four, softened water and softened water vapor recycle: the softened water S05 of normal temperature passes into the second heat exchanger 6, second heat exchanger 6 and utilizes the waste heat of flue gas S03 to carry out preheating to softened water S05, form the softened water S07 with uniform temperature; Softened water S07 passes into second-kind absorption-type heat pump 8, and second-kind absorption-type heat pump 8 utilizes the waste heat of the jacket water S12 of internal-combustion engine 1 to make softened water S07 direct boiling become saturated or fractional saturation softened water steam S08; Softened water steam S08 passes into First Heat Exchanger 7 through corresponding pipeline, and First Heat Exchanger 7 utilizes the waste heat of flue gas S01 to heat further softened water steam S08, makes temperature and the higher saturated or fractional saturation softened water steam S09 of saturation ratio.
As from the foregoing, mode of execution one recycles the jacket water waste heat of internal-combustion engine 1 by second-kind absorption-type heat pump 8, makes the softened water vaporization entered in second-kind absorption-type heat pump 8; Recycled the waste heat of the higher flue gas S01 of temperature by First Heat Exchanger 7, make to be raised by the temperature of the softened water steam S08 of First Heat Exchanger 7 and saturation ratio, formation temperature and the higher softened water steam S09 of saturation ratio; Recycled the waste heat of the flue gas S03 that temperature reduces by the second heat exchanger 6, preheating is carried out to the softened water S05 passing into the second heat exchanger 6.Thus, when distributed busbar protection adopts the system of above-mentioned recycling afterheat of IC engine, on the one hand, being fully used with the use of the jacket water waste heat making internal-combustion engine 1 discharge and fume afterheat of second-kind absorption-type heat pump 8, First Heat Exchanger 7 and the second heat exchanger 6, thus improve the overall efficiency of energy utilization of distributed busbar protection; Simultaneously because each heat exchanger is arranged in series, make to realize high energy high use, the low use of low energy to the utilization of fume afterheat, namely to greatest extent the waste heat of flue gas is accomplished that grade counterpart utilizes, reduce the waste of the energy, thus improve the overall efficiency of energy utilization of distributed busbar protection further; And second-kind absorption-type heat pump 8 utilizes the jacket water waste heat of internal-combustion engine 1 to make softened water S07 direct boiling become softened water steam S08, improve energy grade (being mainly reflected in temperature), thus promote the overall efficiency of energy utilization of distributed busbar protection further.On the other hand, with traditional utilize cooling tower to reduce the jacket water temperature of internal-combustion engine 1 time need additionally to consume energy compared with, the system of the recycling afterheat of IC engine described in mode of execution one does not need extra power consumption, thus energy saving; Moreover the flue gas of the exhaust smoke outlet discharge of internal-combustion engine 1, directly successively by First Heat Exchanger 7 and second heat exchanger 6 of series connection, does not need to carry out flow-dividing control to flue gas, makes the control of the system of this recycling afterheat of IC engine simpler.
Mode of execution two, is arranged in parallel between the flue gas channel of each heat exchanger.The quantity of heat exchanger includes but not limited to two, hereafter for convenience, in parallel for two heat exchangers.Please continue to refer to Fig. 2, be arranged in parallel between First Heat Exchanger 7 and the flue gas channel of the second heat exchanger 6, first flue gas flow valve 12 arranges and is communicated with on the pipeline of the flue gas channel of First Heat Exchanger 7 and the smoke exhaust outlet of internal-combustion engine 1, second flue gas flow valve 13 arranges and is communicated with on the pipeline of the flue gas channel of the second heat exchanger 6 and the smoke exhaust outlet of internal-combustion engine 1, First Heat Exchanger 7 is arranged on the pipeline that is communicated with the softened water steam (vapor) outlet of second-kind absorption-type heat pump 8, second heat exchanger 6 is arranged on the softened water pipeline that is communicated with the softened water entrance of second-kind absorption-type heat pump 8.When the system of the recycling afterheat of IC engine that mode of execution two provides is in running order, comprise four work cycle, specific as follows:
Work cycle one, internal combustion engine cylinder jacket water circulation: the jacket water S12 discharged from the jacket water outlet of internal-combustion engine 1 enters second-kind absorption-type heat pump 8 by corresponding pipeline, for second-kind absorption-type heat pump 8 provides temperature after heat to reduce, jacket water S13 after cooling discharges from second-kind absorption-type heat pump 8, and get back in internal-combustion engine 1 by corresponding pipeline, cool with combustion motor 1.
Work cycle two, internal-combustion engine flue gas recirculation: the flue gas S01 that the exhaust smoke outlet of internal-combustion engine 1 is discharged directly passes into First Heat Exchanger 7 in parallel and the second heat exchanger 6, and the flow passing into the flue gas of First Heat Exchanger 7 and the second heat exchanger 6 controls respectively by the first flue gas flow valve 12 and the second flue gas flow valve 13; Flue gas S01 forms flue gas S16 and flue gas S03 after the first flue gas flow valve 12 and the second flue gas flow valve 13 distribute, flue gas S16 and flue gas S03 passes into the flue gas S17 and the flue gas S04 that form cooling in First Heat Exchanger 7 and the second heat exchanger 6 after heat exchange respectively, and flue gas S17 and flue gas S04 all directly discharges.
Work cycle three, second-kind absorption-type heat pump circulates: second-kind absorption-type heat pump 8 relies on self thermodynamic property, the waste heat of the jacket water S12 utilizing the jacket water outlet of internal-combustion engine 1 to discharge, as driving heat source, makes softened water S05 direct boiling become saturated or fractional saturation softened water steam S08.
Work cycle four, softened water and softened water vapor recycle: the softened water S05 of normal temperature passes into the second heat exchanger 6, second heat exchanger 6 and utilizes the waste heat of flue gas S03 to carry out preheating to softened water S05, form the softened water S07 with uniform temperature; Softened water S07 passes into second-kind absorption-type heat pump 8, utilizes the waste heat of the jacket water S12 of internal-combustion engine 1 to make softened water S07 direct boiling become saturated or fractional saturation softened water steam S08 in second-kind absorption-type heat pump 8; Softened water steam S08 passes into First Heat Exchanger 7 through corresponding pipeline, and First Heat Exchanger 7 utilizes the waste heat of flue gas S17 to heat further softened water steam S08, makes temperature and the higher saturated or fractional saturation softened water steam S09 of saturation ratio.
As from the foregoing, mode of execution two recycles the jacket water waste heat of internal-combustion engine 1 by second-kind absorption-type heat pump 8, makes the softened water S07 entered in second-kind absorption-type heat pump 8 be vaporized into saturated or fractional saturation softened water steam S08; Recycled the waste heat of the flue gas S16 shunted through the first flue gas flow valve 12 by First Heat Exchanger 7, make the temperature by the softened water steam S08 of First Heat Exchanger 7 and saturation ratio rising, the softened water steam S09 that formation temperature and saturation ratio raise; Recycled the waste heat of the flue gas S03 shunted through the second flue gas flow valve 13 by the second heat exchanger 6, preheating is carried out to the softened water S05 passing into the second heat exchanger 6.Thus, when distributed busbar protection adopts the system of above-mentioned recycling afterheat of IC engine, being fully used with the use of the jacket water waste heat making internal-combustion engine 1 discharge and fume afterheat of second-kind absorption-type heat pump 8, First Heat Exchanger 7 and the second heat exchanger 6, thus significantly improve the overall efficiency of energy utilization of distributed busbar protection; In addition, second-kind absorption-type heat pump 8 utilizes the jacket water waste heat of internal-combustion engine 1 to make softened water S07 direct boiling become softened water steam S08, improve energy grade (being mainly reflected in temperature), thus promote the overall efficiency of energy utilization of distributed busbar protection further; Moreover, with traditional utilize cooling tower to reduce the jacket water temperature of internal-combustion engine 1 time need additionally to consume energy compared with, the system of above-mentioned recycling afterheat of IC engine does not need extra power consumption, thus energy saving.
Mode of execution three, between the flue gas channel of each heat exchanger, in series parallel connection, mixing is arranged.The quantity of heat exchanger includes but not limited to three, hereafter mode of execution three for convenience of description, for three heat exchanger strings and series-parallel connection.Please continue to refer to Fig. 3, the flue gas channel being communicated with the second heat exchanger 6 on softened water pipeline and the flue gas channel of First Heat Exchanger 7 be communicated with the softened water steam (vapor) outlet of second-kind absorption-type heat pump 8 are arranged in series, and the flue gas channel that the second heat exchanger 6 and First Heat Exchanger 7 are arranged in series formation is arranged in parallel with the flue gas channel of the 3rd heat exchanger 14 be communicated with on softened water pipeline, first flue gas flow valve 12 arranges and is communicated with at the 3rd heat exchanger 14 with on the pipeline of the smoke exhaust outlet of internal-combustion engine 1, second flue gas flow valve 13 arranges and is communicated with on the pipeline of First Heat Exchanger 7 with the smoke exhaust outlet of internal-combustion engine 1, when the system of the recycling afterheat of IC engine that mode of execution three provides is in running order, specific works endless form and beneficial effect similar with the work cycle mode in mode of execution two and beneficial effect to above-mentioned mode of execution one, difference is: the flue gas S01 that the exhaust smoke outlet of internal-combustion engine 1 is discharged distributes rear formation flue gas S03 and flue gas S16 by the second flue gas flow valve 13 and the first flue gas flow valve 12, the flue gas S17 that after flue gas S03 first passes into and heats softened water steam S08 in First Heat Exchanger 7, formation temperature reduces, flue gas S17 passes in the second heat exchanger 6 and heats softened water S05, flue gas S16 directly passes into the 3rd heat exchanger 14 and heats further the softened water S19 after the second heat exchanger 6 utilizes the waste-heat of flue gas S17.By arranging multiple heat exchanger, softened water S05 being heated, making softened water S07 have higher temperature, can vaporize more fully after softened water S07 passes into second-kind absorption-type heat pump 8.Certainly, 3rd heat exchanger 14 can also be communicated with the softened water steam (vapor) outlet of second-kind absorption-type heat pump 8, the softened water stream passageway of the 3rd heat exchanger 14 and the softened water stream passageway of First Heat Exchanger 7 are arranged in series, and the flue gas channel of the 3rd heat exchanger 14 and the second heat exchanger 6 be arranged in series, the flue gas channel of First Heat Exchanger 7 is in parallel, the waste heat of the flue gas S16 that the 3rd heat exchanger 14 utilizes the first flue gas flow valve 12 to shunt tentatively heats the softened water steam of formation temperature rising to softened water steam S08, softened water steam after heating preliminary in the 3rd heat exchanger 14 passes in First Heat Exchanger 7, the waste heat of the flue gas S03 that First Heat Exchanger 7 utilizes the second flue gas flow valve 13 to shunt heats formation temperature and the higher softened water steam S09 of saturation ratio further to the softened water steam after tentatively heating.
At mode of execution one, in work cycle four in mode of execution two or mode of execution three, the temperature that second-kind absorption-type heat pump 8 utilizes jacket water waste heat to provide is by ambient temperature, the impact of the type of jacket water temperature and second-kind absorption-type heat pump 8 etc. is very large, in second-kind absorption-type heat pump 8, the higher softened water steam of saturation ratio is fully vaporizated in order to make softened water S07, preferably, refer to Fig. 1, Fig. 2 or Fig. 3, at mode of execution one, on the basis of mode of execution two or mode of execution three, the pipeline passing into softened water in the second heat exchanger 6 is provided with softened water Flow valve 4 and suction booster 5, wherein softened water Flow valve 4 is positioned at the upstream of suction booster 5.Softened water Flow valve 4 is used for regulating the water yield of softened water of input second-kind absorption-type heat pump 8; Suction booster 5 regulates the pressure passing into the softened water S05 of second-kind absorption-type heat pump 8 to control the pressure of softened water S07.When the temperature that second-kind absorption-type heat pump 8 utilizes jacket water waste heat to provide raises, then carry out supercharging by suction booster 5 couples of softened water S05, the softened water that the temperature pressure of the softened water S06 after supercharging being reached utilize jacket water waste heat to provide with second-kind absorption-type heat pump 8 matches is vaporized pressure phase transition; When the temperature that second-kind absorption-type heat pump 8 utilizes jacket water waste heat to provide reduces, then the outlet pressure reducing suction booster 8 reduces the pressure of softened water S06.Regulated by the pressure of suction booster 5 couples of softened water S05, the pressure of the softened water S07 of preheating is matched with the vaporization pressure phase transition of softened water at the temperature utilizing jacket water waste heat to provide at second-kind absorption-type heat pump 8, softened water S07 is fully vaporized in second-kind absorption-type heat pump 8, realize making full use of of the jacket water waste heat of absorption heat transformer 8 combustion motor 1, thus improve the overall efficiency of energy utilization of distributed busbar protection further.In addition, the setting of suction booster 5, can make the softened water steam of different pressures, meets the demand of different occasion to the steam of different pressures.
When the system of above-mentioned recycling afterheat of IC engine is in running order, due to the flue-gas temperature higher (about 500 DEG C) that internal-combustion engine 1 is discharged, directly pass in heat exchanger the grade (being embodied in temperature) softened water steam being heated or can slattern softened water preheating flue gas S01, in order to make full use of the grade of flue gas S01, please continue to refer to Fig. 1, Fig. 2 or Fig. 3, the fume pipe be communicated with the exhaust smoke outlet of internal-combustion engine 1 is provided with exhaust heat boiler 2, and flue gas S01 reoffers to each heat exchanger after heat exchange in exhaust heat boiler 2.Exhaust heat boiler 2 can utilize the waste heat of flue gas S01 produce the higher steam of temperature and pressure for freezing, heating, power supply etc., increase energy source use scope, not by environment and the impact in season.Therefore, in the system of above-mentioned recycling afterheat of IC engine, set up exhaust heat boiler 2, the fume afterheat of internal-combustion engine 1 can be made full use of, improve the cascade utilization degree of fume afterheat, thus improve the utilization ratio of fume afterheat.
In the system of above-mentioned recycling afterheat of IC engine, the jacket water waste heat of internal-combustion engine 1 is utilized to make softened water S07 direct boiling be saturated or fractional saturation softened water steam S08 by second-kind absorption-type heat pump 8, softened water steam S08 is formation temperature and the higher softened water steam S09 of saturation ratio after heat exchanger utilizes the fume afterheat of internal-combustion engine 1 to heat further, softened water steam S09 needs could obtain steam completely through gas-liquid separation, further, please continue to refer to Fig. 1, Fig. 2 or Fig. 3, the steam (vapor) outlet of the heat exchanger be communicated with the softened water steam (vapor) outlet of second-kind absorption-type heat pump 8 is arranged and is communicated with vapor flash device 3, the drain opening of vapor flash device 3 is communicated with the water intake of suction booster 5.When softened water steam S09 is fractional saturation softened water steam, vapor flash device 3 couples of softened water steam S09 carry out gas-liquid separation, and isolate saturated vapour S10 to use it for anything else, isolated softened water S11 passes into suction booster 5 by corresponding pipeline; When softened water steam S09 is saturated softened water steam, softened water steam S09 is only direct to discharge to use it for anything else by vapor flash device 3.
When the jacket water of internal-combustion engine circulates, due to the reason such as sealing and evaporation loss of joint, the amount of jacket water can reduce gradually along with the use of internal-combustion engine 1, simultaneous temperature also can raise gradually, in order to ensure that internal-combustion engine 1 efficiently works, preferably, please continue to refer to Fig. 1, Fig. 2 or Fig. 3, the system of above-mentioned recycling afterheat of IC engine also comprises softening water tank 10, and softening water tank 10 is connected with the jacket water entrance of internal-combustion engine 1 by moisturizing pipeline, and moisturizing pipeline is provided with refill flow valve 9.Can determine whether to need moisturizing according to the amount of jacket water in internal-combustion engine 1 and temperature.When needs moisturizing, open and control refill flow valve 9, make the water in softening water tank 10 enter in internal-combustion engine 1, during value when the amount of jacket water in internal-combustion engine 1 and temperature reach the efficient work ensureing internal-combustion engine 1, close refill flow valve 9, stop moisturizing.The arranging of softening water tank 10 and refill flow valve 9 ensure on the one hand internal-combustion engine 1 efficiently work time the required jacket water water yield and water temperature, ensure that the jacket water of internal-combustion engine 1 provides stable thermal source for second-kind absorption-type heat pump 8 on the other hand.
In the recycling afterheat of IC engine system that above-mentioned mode of execution one, mode of execution two or mode of execution three provide, second-kind absorption-type heat pump 8 utilize the waste heat of the jacket water of internal-combustion engine 1 to make softened water S07 direct boiling be saturated or fractional saturation softened water steam S08 time, second-kind absorption-type heat pump 8 needs discharge section low-temperature heat quantity, and this part heat can affect the utilization ratio of the waste heat of the jacket water of second-kind absorption-type heat pump 8 combustion motor 1.Given this, please continue to refer to Fig. 1, the system of above-mentioned recycling afterheat of IC engine also comprises cooling unit 11, and cooling unit 11 is communicated with on the coolant outlet of second-kind absorption-type heat pump 8 and the circulation loop pipeline of entrance; The cooling water S14 of second-kind absorption-type heat pump 8 takes out of needing the low-temperature heat quantity of discharging in second-kind absorption-type heat pump 8, cooled by cooling unit 11 couples of cooling water S14, the cooling water S15 after cooling is got back in second-kind absorption-type heat pump 8 by corresponding pipeline.Thus, the setting of cooling unit 11 can ensure second-kind absorption-type heat pump 8 Effec-tive Function, thus can ensure the utilization ratio of the waste heat of the jacket water of second-kind absorption-type heat pump 8 combustion motor 1.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (11)
1. recycle a system for afterheat of IC engine, be applied in distributed busbar protection, it is characterized in that, comprising:
Be communicated with the second-kind absorption-type heat pump on the jacket water circulating line of internal-combustion engine;
The softened water pipeline be communicated with the softened water entrance of described second-kind absorption-type heat pump;
At least two heat exchangers be communicated with the exhaust smoke outlet of described internal-combustion engine, and have at least a described heat exchanger to be arranged on described softened water pipeline, have at least a described heat exchanger to be communicated with the softened water steam (vapor) outlet of described second-kind absorption-type heat pump.
2. the system of recycling afterheat of IC engine according to claim 1, is characterized in that, the flue gas channel of each described heat exchanger is arranged in series.
3. the system of recycling afterheat of IC engine according to claim 2, it is characterized in that, the quantity of described heat exchanger is two, and the temperature being wherein arranged on the heat exchanger on described softened water pipeline is lower than the temperature of the heat exchanger be communicated with the softened water steam (vapor) outlet of described second-kind absorption-type heat pump.
4. the system of recycling afterheat of IC engine according to claim 1, is characterized in that, the flue gas channel of each described heat exchanger is arranged in parallel.
5. the system of recycling afterheat of IC engine according to claim 4, is characterized in that, each flue gas branch pipe(tube) that each described heat exchanger is communicated with the exhaust smoke outlet of described internal-combustion engine respectively is respectively provided with a flue gas flow valve.
6. the system of recycling afterheat of IC engine according to claim 1, it is characterized in that, the quantity of described heat exchanger is at least three, the flue gas channel of heat exchanger described in one of them is connected with the flue gas channel of heat exchanger described at least one, and the flue gas channel of this heat exchanger is also in parallel with the flue gas channel of heat exchanger described at least one.
7. according to the system of the arbitrary described recycling afterheat of IC engine of claim 1-6, it is characterized in that, described softened water pipeline is provided with softened water Flow valve and suction booster, and described softened water Flow valve is positioned at the upstream of described suction booster, described suction booster is positioned at the upstream of all described heat exchanger be arranged on described softened water pipeline.
8. the system of recycling afterheat of IC engine according to claim 7, it is characterized in that, also comprise: for receiving the vapor flash device of the softened water steam of discharging from the heat exchanger be communicated with the softened water steam (vapor) outlet of described second-kind absorption-type heat pump, the drain opening of described vapor flash device is communicated with the water intake of described suction booster.
9., according to the system of the arbitrary described recycling afterheat of IC engine of claim 1-6, it is characterized in that, also comprise: the exhaust heat boiler be communicated with the exhaust smoke outlet of described internal-combustion engine, the flue gas after described residual heat boiler for exchanging heat is supplied to each described heat exchanger.
10. the system of recycling afterheat of IC engine according to claim 1, it is characterized in that, also comprise softening water tank, described softening water tank is connected with the jacket water entrance of described internal-combustion engine by moisturizing pipeline, and described moisturizing pipeline is provided with refill flow valve.
The system of 11. recycling afterheat of IC engine according to claim 1, is characterized in that, the cooling water circulation pipeline of described second-kind absorption-type heat pump is provided with cooling unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605594A (en) * | 2017-09-08 | 2018-01-19 | 新奥泛能网络科技股份有限公司 | Distributed energy resource system |
| CN110220210A (en) * | 2019-03-15 | 2019-09-10 | 华电电力科学研究院有限公司 | A kind of the distributed energy afterheat utilizing system and its working method of high efficient and flexible interaction |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605594A (en) * | 2017-09-08 | 2018-01-19 | 新奥泛能网络科技股份有限公司 | Distributed energy resource system |
| CN110220210A (en) * | 2019-03-15 | 2019-09-10 | 华电电力科学研究院有限公司 | A kind of the distributed energy afterheat utilizing system and its working method of high efficient and flexible interaction |
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