CN201152654Y - Circulating device of air-pressure and heat expansion type - Google Patents

Abstract

The utility model relates to an air-pressure-heat swell circulating device, in particular to a heat circulating device of a refrigerating (heating) and heat engine, which aims at resolving the problem of the prior heat circulating art that depends on consuming the non-renewable energy, and adopts the structure that is mainly composed of a low-temperature liquid generator, a low-temperature heat exchanger, an extended heat collector, a heat-power switch, a Tee retaining valve, a pressurizing heat collector, a condenser and a retaining valve part, which are formed into a closed heat circulating system by adopting a pipeline or direct sealing connection. The circulating device can use the low-grade heat energy (such as solar energy, water, air heat energy) as the circulating power so as to drive a coolant work substance for circularly running, and can obtain the effect for refrigerating (heating) and the outputting mechanical energy during the running.

Description

The air pressure-thermal power expansion type EGR

Affiliated technical field

The utility model relates to a kind of thermodynamic cycle device of refrigeration (heat) and Thermal Motor, particularly a kind of be used as power thermodynamic cycle device of the energy of low grade heat energy that uses.

Background technology

Known at the Engineering Thermodynamics subject: existing thermodynamic cycle technology is different with travel direction according to the effect of thermodynamic cycle, can be divided into forward circulation and reverse circulation.All Thermal Motors all are by forward circulation work, and representative have " steam power Rankine cycle ", and its device mainly is made up of water pump, boiler, steam turbine and condenser.In the forward circulation process, cycle fluid is made circulation power with the high temperature heat source heat that water pump and absorption boiler produce, the cycle fluid of vaporization wherein a part of heat is converted into useful work through the exchange of steam turbine hot merit, and another part is in the condenser heat release as low-temperature heat source.The forward circulation effect is to consume the elevated temperature heat energy to obtain output mechanical energy.Reverse circulation is that heat is passed to high temp objects from cryogenic object, and " steam compression type ideal (contrary Kano) circulation " representatively arranged, and its device mainly is made up of compressor, condenser, expansion valve and evaporimeter (cryogenic heat exchanger).In the reverse circulation process, cycle fluid is made circulation power with compressor input mechanical energy, absorbs heat at the evaporimeter as low-temperature heat source, and to the condenser heat release as high temperature heat source, its effect is to consume mechanical energy and reach refrigeration (heat) purpose.More than two kinds of representative EGRs all require the mass conservation of cycle fluid, adopt pipeline or directly be tightly connected by corresponding parts, form corresponding circulation system.Existing thermodynamic cycle technology and device can be published from Chinese China Machine Press, and " thermal power basis " book of Jiang Zuxing chief editor is quoted as proof.At present, refrigeration of popularization and application (heat) and Thermal Motor device all consume non-renewable energy resources with the forward circulation or the reverse circulation method of operation.A large amount of consumption non-renewable energy resources are on the rise to the negative effect of earth resource and amblent air temperature generation, and there is complicated in mechanical structure in the prior art thermodynamic cycle device of popularization and application, the big shortcoming of noise.

Summary of the invention

In order to overcome the thermodynamic cycle device operation of existing popularization and application, rely on the shortcoming that consumes non-renewable energy resources and complicated in mechanical structure, the utility model provides a kind of air pressure-thermal power expansion type EGR, this EGR can use low grade heat energy (as solar energy, water, temperature thermal energy) to make circulation power, drive refrigerant medium circular flow, be in operation and obtain refrigeration (heat) and external output mechanical energy effect simultaneously.

The technical scheme that its technical problem that solves the utility model adopts is: in closed-cycle system, each parts adopts pipeline or directly is tightly connected, the outlet of low temperature liquid generator, cryogenic heat exchanger, increase-volume heat collector, hot merit switch and threeway check valve inlet are linked in sequence, two outlets of threeway check valve are connected with two condensers, two check valve entry sequences respectively, two condenser intermediary interface are connected with two supercharging heat collectors respectively, and the outlet of two check valves merges with low temperature liquid generator inlet and is connected.Refrigerant medium is sealed in the circulatory system, and the assist gas working medium storing is at the low temperature liquid generator.System is provided with the threeway check valve, and high temperature refrigerant steam enters from inlet, alternately flows out from two outlets, intermittently enters the corresponding condenser that connects, and makes low temperature liquid generator porch obtain stable liquid supply pressure and supercooled liquid without interruption.When a port closing wherein, the corresponding condenser air inlet that connects finishes and arrives the highest condensing pressure state, supercooled liquid falls to its bottom, part supercooled liquid or moist steam absorb heat at supercharging heat collector (high temperature heat source that is equivalent to forward circulation), make the highest condensing pressure rising and foundation, keep liquid supply pressure, supercooled liquid flows out from check valve; Simultaneously, because of pressure reduction and connecting rod mechanism, another port opening of threeway check valve, the corresponding condenser that connects reduce because of supercooled liquid and extraneous cooling and check valve sealing process, arrive minimum condensing pressure state, high temperature refrigerant steam enters the back cooling to be become supercooled liquid and increases condensing pressure gradually.When system moves, assist gas partial pressure and low temperature refrigerant vapor partial pressure power sum equal mist gross pressure (according to Dalton's law (of partial pressures)) in the low temperature liquid generator, fibrous root is set the assist gas partial pressure according to liquid supply pressure and low temperature liquid operating pressure, makes the mist gross pressure equal liquid supply pressure; And set the mist gross pressure and the cryogenic liquid column static pressure is formed the pressure reduction of making a concerted effort with the highest condensing pressure, (ignoring the resistance of ducting) falls in the pressure that produces greater than hot merit switch acting resistance.In the refrigerant medium cyclic process, when a threeway check valve port closing wherein, corresponding condenser liquid supply pressure that connects and supercooled liquid post static pressure sum are during greater than the mist gross pressure, supercooled liquid enters low temperature liquid generator (according to pascal's principle), in adiabatic expansion under the low temperature of refrigerant steam or the environment under low pressure state and between the assist gas molecule, the supercooled liquid thermodynamic energy reduces and produces low temperature liquid and low temperature refrigerant steam; Simultaneously, the increase of low temperature refrigerant steam pressure potential energy causes the mist gross pressure to increase.The mist gross pressure that increases by the transmission of low temperature liquid and and the cryogenic liquid column static pressure form and make a concerted effort, promote externally to do work through the hot merit switch by the high temperature refrigerant vapor stream of increase-volume heat collector generation.The mist thermal energy is converted into output work, makes wherein the low temperature refrigerant steam low temperature liquid that freeze-outs, and the mist gross pressure also descends thereupon, and external output mechanical energy (according to the first law of thermodynamics).The low temperature liquid gravitate that is condensed by expand generation and acting falls to low temperature liquid generator bottom, flows out from outlet at bottom under the mist gross pressure promotes, and refrigerant medium is mobile with steady flow condition in the low temperature liquid generator.Low temperature liquid absorbs heat and the sensible heat intensification at cryogenic heat exchanger (low-temperature heat source that is equivalent to reverse circulation) under the mist gross pressure.The low temperature liquid that sensible heat heats up enters increase-volume heat collector (high temperature heat source that is equivalent to forward circulation), forms in mist gross pressure and cryogenic liquid column static pressure and makes a concerted effort down that the heat absorption vaporization produces high temperature refrigerant steam.High temperature refrigerant steam is formed under the pressure reduction of making a concerted effort with the highest and minimum condensing pressure in mist gross pressure and cryogenic liquid column static pressure, and promotion hot merit switch externally does work.High temperature refrigerant steam after the acting enters corresponding condenser (low-temperature heat source that the is equivalent to forward circulation) discharges heat that connects through the outlet of another unlatching of threeway check valve, and cooling becomes supercooled liquid and sets up the highest condensing pressure.So far, refrigerant medium is finished week circulation, and constantly circulation so again and again can obtain refrigeration (heat) and output mechanical energy effect simultaneously.Native system choice criteria boiling point is fit to the refrigerant of low-grade high temperature heat source temperature and makes cycle fluid, when reaching mist gross pressure and cryogenic liquid column static pressure, increase-volume heat collector temperature forms the pairing refrigerant medium saturation temperature and when above of making a concerted effort, refrigerant medium boiling vaporization, with the differential pressure action of condensing pressure under enter the circular flow state.Therefore, this EGR is to consume low grade heat energy, and is the energy that obtains easily.The unique mechanical component of this EGR is the hot merit switch, and mainly by in the body fuselage that is provided with the working medium import and export wheel rotor being set, impeller shaft stretches out the body fuselage connection and stablizes constant mechanical load composition.Than the rotatable parts that the prior art EGR uses, it is simple in structure, noise is little.The low temperature liquid generator mainly is made up of the assist gas working medium of storing certain pressure in the rigidity open containers of heat-insulation and heat-preservation, draws the exit below the low temperature liquid level of bottom; Provide the space that subcooled liquid expands and does work, the operation technique parameter that one constant volume and assist gas pressure are corresponding certain: as supercooled liquid flow, supercooled liquid temperature, inlet hydraulic and low temperature liquid running temperature (pressure).Influence low temperature refrigerant vapor partial pressure power in it for avoiding external heat to import the low temperature liquid generator into, must take the heat-insulation and heat-preservation measure, the heat transmission is reduced to ignores degree.Assist gas working medium for doing saturated or superheated steam gas, is mixed with refrigerant medium chemical reaction is not taken place under low temperature liquid running temperature state.Cryogenic heat exchanger is the opening heat transmission equipment that absorbs external heat with the liquid sensible heat, and with fluid-tight effect shutoff assist gas working medium in the low temperature liquid generator.The increase-volume heat collector is an opening heat absorption container, and the supercharging heat collector is the heat absorption container of remaining silent, and all can absorb various forms and produce the heat that is higher than the refrigerant medium temperature, makes refrigerant medium vaporize, expand within it.The hot merit effect switcher is that the portion of hot energy that supercooled liquid carries is converted into output work, makes the interior refrigerant medium of low temperature liquid generator run on steady flow condition; Be transition heat energy and set output acting amount, the operation technique parameter that its certain output acting amount is corresponding certain as required: as working medium flow, acting resistance and pressure drop; Be to promote wheel rotation, drive the extraneous mechanical part of stablizing permanet load (as plant equipment, TRT) by rotating shaft with refrigerant steam.The threeway check valve is to be connected by the inlet concentric of two check valves, and the junction is drawn interface and is inlet, and two one-way valve pistons are linked to each other on axial line by a connecting rod, when a check valve port closing wherein, and another check valve port opening.Opening is an intermediary interface between the condenser entry and exit, connects to form the same space with the supercharging heat collector.

The beneficial effects of the utility model are: use low grade heat energy, and be that the clean energy resource that obtains easily reaches refrigeration (heat) and obtains the mechanical energy purpose, the thermodynamic cycle device that changes existing popularization and application relies on and consumes the non-renewable energy resources present situation.The unique mechanical component of this EGR is the hot merit switch, and it is simple in structure, noise is little.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is system's structural map of air pressure-thermal power expansion type EGR embodiment.

1. low temperature liquid generators, 2. liquid valves, 3. cryogenic heat exchangers, 4. increase-volume heat collectors, 5. hot merit switches, 6. threeway check valves, 7. supercharging heat collectors, 8. supercharging heat collectors, 9. condensers, 10. condensers, 11. check valves, 12. check valves, 13. feed liquor valves among the figure

The specific embodiment

In the embodiment shown in fig. 1, each unit interface adopts pipeline or directly is tightly connected, 1 outlet of low temperature liquid generator is connected with liquid valve 2 inlets, liquid valve 2 outlets are connected with cryogenic heat exchanger 3 inlets, cryogenic heat exchanger 3 outlets are connected with increase-volume heat collector 4 inlets, 4 outlets of increase-volume heat collector are connected with hot merit switch 5 inlets, 5 outlets of hot merit switch are connected with threeway check valve 6 inlets, threeway check valve 6 a wherein outlet is connected with condenser 9 inlets, condenser 9 intermediary interface are connected with supercharging heat collector 7 interfaces, condenser 9 outlets are connected with check valve 11 inlets, 6 another outlets of threeway check valve are connected with condenser 10 inlets, condenser 10 intermediary interface are connected with supercharging heat collector 8 interfaces, condenser 10 outlets are connected with check valve 12 inlets, check valve 11 is connected with feed liquor valve 13 inlets with check valve 12 outlet merging, and 13 outlets of feed liquor valve are connected with low temperature liquid generator 1 inlet.Open when liquid valve 2 and feed liquor valve 13 move in system, close when out of service, refrigerant vapor partial pressure power is in low-pressure state in the low temperature liquid generator 1 to keep, and is convenient to that put into operation next time and to the maintenance of system and device.

Claims (6)

1. air pressure-thermal power expansion type EGR, in closed-cycle system, each parts adopts pipeline or directly is tightly connected, refrigerant medium is sealed in the circulatory system, it is characterized in that: the outlet of low temperature liquid generator, cryogenic heat exchanger, increase-volume heat collector, hot merit switch and threeway check valve inlet are linked in sequence, two outlets of threeway check valve are connected with two condensers, two check valve entry sequences respectively, two condenser intermediary interface are connected with two supercharging heat collectors respectively, and the outlet of two check valves merges with low temperature liquid generator inlet and is connected.

2. air pressure-thermal power expansion type EGR according to claim 1 is characterized in that: the low temperature liquid generator mainly is made up of the assist gas working medium that the rigidity open containers of heat-insulation and heat-preservation is stored certain pressure.

3. air pressure-thermal power expansion type EGR according to claim 1, it is characterized in that: system is in service, is full of refrigerant liquid in the cryogenic heat exchanger.

4. air pressure-thermal power expansion type EGR according to claim 1 is characterized in that: condenser is provided with intermediary interface between the entry and exit.

5. air pressure-thermal power expansion type EGR according to claim 1 is characterized in that: the threeway check valve is connected by the inlet concentric of two check valves, and the junction is drawn interface and is inlet, and the piston of two check valves is linked to each other on axial line by a connecting rod.

6. air pressure-thermal power expansion type EGR according to claim 1 is characterized in that: the hot merit switch is that the portion of hot energy that supercooled liquid carries is converted into output work, makes cycle fluid run on steady flow condition; Mainly by in the body fuselage that is provided with import and export wheel rotor being set, impeller shaft stretches out the body fuselage connection and stablizes constant mechanical load composition its structure.