CN201461241U

CN201461241U - Compressed air thermal energy storage system based on reversible air engine

Info

Publication number: CN201461241U
Application number: CN2009200209223U
Authority: CN
Inventors: 武睿; 张琪
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-15
Filing date: 2009-04-15
Publication date: 2010-05-12
Anticipated expiration: 2019-04-15

Abstract

The utility model relates to a compressed air thermal energy storage system based on a reversible air engine, which includes a motor generator, a reversible air engine, a gas storage and a heat preservation water tank. The motor generator is connected with the reversible air engine through a reducer Connected, the reversible air motor is connected with the gas storage and the heat preservation water tank respectively. During the low electricity consumption period, compressed air is produced and stored in the air bank, and the released heat is stored in water; during the peak electricity consumption period, the compressed air is used to drive the reversible air engine to generate electricity, and the stored hot water is used to heat the compressed air. The reversible air engine integrates the functions of the compressor and the engine, and adopts the technical scheme of exhaust gas pressure stabilization and timely variable cylinder, which eliminates the energy loss taken away by the exhaust gas and the decompression energy loss during intake air, and has high energy. Conversion efficiency. The system can be used for peak shaving and valley filling of the power system, emergency backup, and can also solve the intermittent bottleneck of wind power generation and the development and utilization of low-valley power at night.

Description

Pressurized air based on the reversible air engine joins hot energy-storage system

Technical field

The utility model relates to a kind of electric energy storage system, and especially a kind of pressurized air based on the reversible air engine joins hot energy-storage system.

Background technique

Power system load is unbalanced to be the great scientific research task in the world today, electric energy is as a kind of product, has particularity, maximum characteristics are to store, and be subjected to the influence of supply-demand relationship, electricity market supply and demand structural change, so electric energy presents, and fluctuation is frequent, amplitude is big, electricity consumption every day has the bigger peak valley phase.Along with the continuous growth of Electricity Demand, the peak load gap is constantly widening, and the unbalanced situation of operation of power networks is increasingly sharpened, and the growth rate of peak-valley difference is greater than the load increasing rate.Power supply breach during being subjected to the restriction of power supply supply, electric network transportation ability not only to cause peak of power consumption when the peak, and the overload operation of electric power system are that electric power safety is a big hidden danger.On the other side but is that the electric weight of low power consumption phase generating capacity affluence causes the loss of the annual several hundred billion degree electric power of China but often because of can not get effective utilization.To this, country regulates electricity price by economic lever on the one hand, encourages to use electricity in off-peak hours, and the various places peak electricity tariff has reached 3-6 times of low ebb electricity price at present.Develop energy accumulating technique on the other hand, utilize valley power to shift the peak of power consumption load and seem particularly necessary by energy storage system.So not only can alleviate electrical network at the power supply pressure of peak phase, also increase the spare capacity of system, help the safe and stable operation of electrical network,, reduce electric cost, promote that environmental protection is all significant improving generating efficiency.For the storage of the storage of electric energy, can take following mode, as modes such as pumped storage power station, Caes power station, storage battery storage station, the accumulation of energy of superconduction magnetic, flywheel energy storage, electromagnetic storages.But what can be used in big capacity energy storage power generation up to now mainly is pumped storage and two kinds of systems of Caes.

The construction of China's pumped storage power station and planning design work are vigorously launched just in China at present, unnecessary capacity and electric weight when it utilizes the electric load low ebb, be extracted in the eminence upper storage reservoir by the water of motor generator set drive water pump the lower lower storage reservoir, this part water yield is stored with the potential energy form, when treating that power system load transfers the peak to, again this part water yield is driven the motor generator set generating by water turbine, to replenish not enough spike capacity and electric weight, satisfy the peak-load regulating demand, so constantly periodic duty.But pumped storage power station requires to possess 2 reservoirs in upstream and downstream, and great in constructing amount, floor space is big, and overall cost is higher, and away from load centre, and the upper storage reservoir addressing is strict to height, area, geologic structure.Moisture in the reservoir evaporates easily, runs off, and needs continuous supplementation to lose water usage, has increased cost of electricity-generating.Still there are certain risk in various natural disasteies of this external reply and geological disaster aspect.

The Caes power station does not then have above-mentioned restriction, and diminish advantages such as floor space is few, engineering work load is little, the duration is short, energy storage phase lasting stability, economic performance height, therefore worldwide be subjected to paying close attention to widely, be considered to very promising energy storage system of new century.Utilize the Caes generating to mainly contain dual mode, a kind of is gas turbine power generation, and another kind of is gas direct expansion generating.The former working principle be that low price electric energy when utilizing low ebb drives air compressor pressurized air, stored energy in air-storage chambers such as cave, abandoned mine, pipeline; During the electric power system peak load, again pressurized air is discharged, mix with rock gas and inject the generating of firing chamber driving gas turbine generator.But because the gas that gas turbine is discharged is high temperature and high pressure gas still, taken away lot of energy, increased the energy loss of system.Contain a large amount of carbon dioxide and nitrogen oxide after its fuel combustion, enter atmosphere and cause environmental pollution, and its unit is huge, the equipment complexity, system's miniaturization cost is too high, the distributed accumulation of energy of difficult realization.

The energy generating that gas direct expansion generating directly utilizes pressurized gas to produce when step-down, its prime mover can have two kinds of forms, a kind of is turbine-type, a kind of is piston type, turbine-type and gas turbine are similar, and high-pressure air can not effectively be expanded, and the gas of being discharged still is pressurized gas, can take away big energy, this waste can reduce the complex energy conversion ratio to a great extent.Piston type prime mover and internal-combustion engine have similarity, but in the present technological scheme, the reciprocating engine aspirating stroke terminal residual pressure that expands is higher, and lot of energy just is not fully utilized and is discharged by subsequently exhaust stroke, and the efficient of motor inevitably reduces.And existing technical scheme is to avoid the motor acting amount minimizing that air pressure descends and causes in the caisson, unstable working condition, must make the suction pressure of motor be lower than pressure in the caisson, therefore between caisson and motor, decompressor be set, and decompression process is a kind of irreversible energy changing process, there is bigger energy loss, will further reduces system effectiveness.In addition, existingly directly in gas storage, charge into the problem that compressed-air actuated technological scheme exists an excess compression with air compressor, be that traditional two-stage or compound air compressor gas circuit is cascaded structure, outlet air pressure will be very high, and when air pressure in the gas storage was low, this part compressed good gas and can expand back again, had occurred swelling in compression process, done unnecessary merit when explanation is compressed this part gas when compression, this part energy is being wasted virtually.In sum, too much energy loss can make energy-storage system and even Pneumatic automobile lose actual application value, therefore must seek new solution.

The model utility content

The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of compact structure is provided, and change working is fast, and the pressurized air based on the reversible air engine that improves capacity usage ratio joins hot energy-storage system.

For achieving the above object, the utility model adopts following technical proposals:

A kind of pressurized air based on the reversible air engine joins hot energy-storage system, it comprises motor generator set, reversible air engine, gas storage and heat-insulating water tanks, motor generator set links by retarder and reversible air engine, and the reversible air engine links to each other with heat-insulating water tanks with gas storage respectively.

Described motor generator set is double generator or the double motor of making generator of making motor, or cage type induction motor or synchronous machine, or the reversible motor generator set in the pumped storage power station.

Described gas storage is cavern or cavity, salt rock stratum or the mine of discarding or oil gas well or tunnel or gas holder or steel cylinder or the carbon fiber gas tank that is deposited in the seabed.

Described heat-insulating water tanks is the common water tank of peripheral hardware heat insulation layer structure, and heat-insulating water tanks links to each other with regenerator with water jacket, the cooler of reversible air engine through recycle pump.

The reversible air engine comprises piston type body, air path part and tail gas voltage stabilizing mechanism; The piston type body comprises support, cylinder, piston, connecting rod, bent axle and water jacket, and cylinder is fixed on the support, and progression is three grades, has in the cylinder along the piston of cylinder body axially reciprocating, and piston links by wrist pin and connecting rod, and the other end and the bent axle of connecting rod link; One end connection reducer of bent axle, the other end links to each other with valve cam with crankshaft sprocket by clutch; Cylinder body is with water jacket outward, links to each other with heat-insulating water tanks through recycle pump with after the pipeline series connection between water jacket; Wherein, on the cylinder top of one-level cylinder one-level outlet valve, one-level suction valve, intake valve A and exhaust valve A are installed, on the cylinder top of secondary cylinder secondary outlet valve, secondary suction valve, intake valve B and exhaust valve B are installed, three grades of outlet valves, three grades of suction valves, intake valve C, exhaust valve C and sampling valves are installed on the cylinder top of three-stage cylinder.

Described air path part can be divided into compression air path part and expansion air path part, and the compression air path part comprises suction valve, outlet valve, gas circuit switching ball valve, operating mode isolation ball valve, pressure electrical apparatus release, air-strainer, oil expeller, exsiccator and pipeline;

The expansion air path part comprises intake valve, exhaust valve, bi-bit bi-pass distributing valve, gas circuit switching ball valve and pipeline, suction valve, outlet valve, intake valve, exhaust valve are arranged on cylinder head, intake valve and wedge cam coupling, exhaust valve and exhaust cam coupling, exhaust cam links to each other with crankshaft sprocket by chain transmission;

Described chain transmission comprises that the sampling cam is connected with exhaust cam C is coaxial, timing sprocket E is connected with timing sprocket D by timing chain C, timing sprocket C is connected with timing sprocket B by timing chain B, timing sprocket A connects by timing chain A crankshaft sprocket, and crankshaft sprocket is connected by clutch and bent axle are coaxial; Timing sprocket D is connected with timing sprocket C is coaxial with exhaust cam B, and timing sprocket B is connected with timing sprocket A is coaxial with sampling cam, exhaust cam C.

The gas circuit structure of compression air path part is, three grades of suction valves connect filter cleaner B by pipeline, three grades of outlet valves connect operating mode isolation ball valve C by pipeline, the operating mode isolation ball valve C the other end connects the gas access of the coiler of cooling heat exchanger C by pipeline, the gas outlet of coiler connects the secondary suction valve by pipeline, and the secondary outlet valve connects operating mode isolation ball valve B by pipeline;

The operating mode isolation ball valve B the other end is told two branch roads, article one, switch behind the ball valve C with the gas access of the coiler of cooling heat exchanger B through gas circuit and link to each other, another switches behind ball valve D through gas circuit and links to each other with the gas access of the coiler of cooling heat exchanger A after the pipeline of one-level outlet valve after through operating mode isolation ball valve A converges;

The one-level suction valve connects two branch roads, and one switches behind the ball valve B with the gas outlet of the coiler of cooling heat exchanger B through gas circuit and to link to each other, and another links to each other with filter cleaner A after through gas circuit switching ball valve A;

Cooling heat exchanger A connects two branch roads, and one connects the pressure electrical apparatus release, links to each other with gas storage behind another process oil expeller, exsiccator and the stop valve.

Described compression air path part comprises the pressure electrical apparatus release, the pressure electrical apparatus release comprises pressure electrical apparatus release housing, small piston, pressure-sensitive spring, triggers push rod A, spring A, wire rope group A, wherein the small piston right-hand member is being against under the pressure of pressure-sensitive spring on the pressure electrical apparatus release housing, the small piston left end is a hook-shaped, hook and trigger push rod A, be with spring A on the push rod A, the upper end and the wire rope group A that trigger push rod A link, and the other end of wire rope group A switches ball valve A, gas circuit switching ball valve B with gas circuit respectively, gas circuit switching ball valve C, gas circuit switching ball valve D link to each other.

The gas circuit structure of described expansion air path part is that gas storage links to each other with the gas access of the coiler of Recuperative heat exchanger A through flow control valve; The gas outlet of the coiler of Recuperative heat exchanger A is told two branch roads, article one, switch ball valve E, bi-bit bi-pass distributing valve A through gas circuit and link to each other with intake valve A, the pipeline after another switches ball valve H, bi-bit bi-pass distributing valve B and the gas outlet process gas circuit of the coiler of Recuperative heat exchanger B is switched ball valve G through gas circuit converges the back and links to each other with intake valve B; Exhaust valve A tells two branch roads, and the gas access with the coiler of regenerator B links to each other, and another switches ball valve F through gas circuit and links to each other with atmosphere;

Exhaust valve B links to each other by pipeline with the gas access of the coiler of Recuperative heat exchanger C, and the gas outlet of the coiler of Recuperative heat exchanger C links to each other by pipeline with intake valve C on the three-stage cylinder; Exhaust valve C directly links to each other with atmosphere, and the sampling valve links to each other with the upper cylinder of the comparator cylinder in pipeline and the tail gas voltage stabilizing mechanism; Cooler all adopts parallel way to link to each other with regenerator, and links to each other with heat-insulating water tanks with recycle pump by pipeline.

Described one-level suction valve, secondary suction valve, three grades of suction valves, one-level outlet valve, secondary outlet valve and three grades of outlet valves are ring valve or netted valve; The upper end of described intake valve A, intake valve B and intake valve C is coupled with wedge cam A, the wedge cam B and the wedge cam C that are arranged on the piston type body respectively; The upper end of described exhaust valve A, exhaust valve B and exhaust valve C respectively be arranged on exhaust cam A, exhaust cam B on the piston type body and exhaust cam C coupling, sampling valve upper end be arranged on the coupling of piston type body up-sampling cam.

Described exhaust cam A, exhaust cam B and exhaust cam C are tray type structure, and wherein, basic circle and tip circle respectively account for a semi-perimeter, and transition position adopts round-corner transition; Exhaust cam A, exhaust cam B and exhaust cam C by camshaft be connected with timing sprocket A is coaxial with timing sprocket E, timing sprocket C respectively;

The sampling cam is connected with exhaust cam C is coaxial, and timing sprocket E, timing sprocket C all are connected with crankshaft sprocket by chain with timing sprocket A, and crankshaft sprocket is connected by clutch and bent axle are coaxial.

Described tail gas voltage stabilizing mechanism comprises comparator cylinder, comparator piston, drives gas tank, two five-way guiding valves, double-acting cylinder, gas distribution piston, distribution tooth bar, gas wiring gear, valve cam A, valve cam B, touch a C, touch a D, touch an A, touch a pedestal A, touch a B, touch a pedestal B, wire rope C, wire rope D, electrical apparatus release B housing, electrical apparatus release hook, trigger push rod B, spring B, wire rope group B; Be provided with the comparator piston in the comparator cylinder, the comparator piston end links to each other with the valve core of the spool valve of two five-way guiding valves, drive the propellant that is filled with in the gas tank about 0.4Mpa, drive gas tank connects two five-way guiding valves with pipeline via intermedia suction port, the air outlet up and down of two five-way guiding valves of two paths of via intermedia both sides links to each other with left cylinder with the right cylinder of double-acting cylinder respectively, and two relief openings of two five-way guiding valves link to each other with atmosphere;

Gas distribution piston is arranged in the double-acting cylinder, and the left end of gas distribution piston fixedly links with the left end that is arranged at the distribution tooth bar on double-acting cylinder top, and distribution tooth bar and gas wiring gear are meshing with each other;

Gas wiring gear is coaxial with valve cam A, is fixed with on the gas wiring gear to touch a pedestal B, touches and is nested with two touching a B and touching a D along the distribution of gas wiring gear diametrically contraposition in the hole of pedestal B;

The double-acting cylinder left end is fixedly connected with electrical apparatus release B housing, be provided with the electrical apparatus release hook in the electrical apparatus release B housing, the electrical apparatus release hook is provided with and triggers push rod B, trigger on the push rod B and be with spring B, trigger push rod B upper end and be connected with wire rope group B one end, the wire rope group B the other end switches ball valve F, gas circuit switching ball valve G with gas circuit switching ball valve E, gas circuit respectively, gas circuit is switched ball valve H and is connected;

Valve cam B outer rim is provided with C shape and touches a pedestal A,, touch to be nested with respectively in the vertical hole in two stulls of a pedestal A and touch an A and touch a C, touch an A be positioned at valve cam B directly over, touch a C be positioned at valve cam B under;

Touch an A, touch a B and link with the two ends of seizing wire group C respectively, touch a C, touch a D and link with the two ends of seizing wire group D respectively by lever by lever; Wire rope group C and bi-bit bi-pass distributing valve A link, and seizing wire group D and bi-bit bi-pass distributing valve B link.

The utility model is in the low power consumption period, utilize electric drive motor generator set more than needed in the electrical network to drive reversible air engine pressurized air and deposit in the gas storage, way by multistage compression and inter-stage cooling makes its thermodynamic process as far as possible near isothermal compression, and the heat that discharges during pressurized air is stored in the water in the heat-insulating water tanks by heat exchanger. in the peak of power consumption period, discharge the pressurized air in the gas storage, drive the reversible air engine and drive generator for electricity generation, the heat of water makes the gas backheat of the back cooling of expanding in the heat-insulating water tanks by heat exchanger, achieve accurate isothermal expansion, thereby can improve the acting ability of pressurized gas. this reversible air engine is integrated in the function of compressor and motor all over the body originally, has saving equipment, compact structure, the advantage that change working is fast. for solving tail gas energy loss problem, specialized designs tail gas voltage stabilizing mechanism, this mechanism is by the comparison of exhaust pressure and external atmospheric pressure, regulate the moment that the bi-bit bi-pass distributing valve turn-offs by closed loop control, make exhaust pressure be stabilized in the numerical value that equates with ambient pressure, thereby realize the variable external mode of work-doing of expansion ratio, maximally utilised the energy in the pressurized gas. for solving decompression loss problem, in the utility model, adopted voltage-controlled change cylinder technology especially, when bleed pressure is higher, adopt high, normal, basic three-stage cylinder series connection to expand, and pressure is when being reduced to a certain degree, the action of pressure electrical apparatus release, drive the valve gas circuit and switch the ball valve switching gas circuit, high pressure cylinder is excised from gas circuit, the pressurized air expansion of in mesolow two-stage cylinder, connecting, do not need decompressor, reduce the purpose of energy loss. for the excess compression problem, voltage-controlled change cylinder technology can also solve, when pressure in the gas storage is low, adopt the two-stage series connection compress mode, and when pressure is higher in the gas storage, adopt three grades of series connection compress modes, thereby both satisfied the demand of pressure, effectively avoided the excess compression problem again. as seen from the above description, the hot accumulation of energy of the connection that adopts in the utility model, technological schemes such as tail gas voltage stabilizing and in good time change cylinder, eliminated the radiation loss that in the integral energy loss, accounts for very big proportion, the decompression loss, tail gas loss and excess compression loss have improved energy conversion efficiency.

The application area of this system is very extensive, both can set up large-scale Caes power station, bear peak-clipping and valley-filling in the electric power system, frequency modulation phase modulation, the task of emergency duty, can be applicable to factory again, enterprise, housing-group writes, distributed accumulation of energy is realized in residential quarters, utilize the low ebb of cheapness in night, save a large amount of electricity charge spendings, has considerable commercial value, can also and wind power system, the supporting use of optoelectronic system, solve the intermittent bottleneck in these energy popularizations, the wind energy of making greater efforts to promote, good social effect is created in the extensive use of renewable energy sourcess such as solar energy, ecological effect.

Description of drawings

Fig. 1 is this entire system allocation plan;

Fig. 2 is valve, the air valve normal axomometric drawing in the configuration of cylinder top;

Fig. 3 is an air path part spatial position schematic representation;

Fig. 4 is compression air path part schematic representation;

Fig. 5 is expansion air path part and tail gas voltage stabilizing mechanism Placement schematic representation;

Fig. 6 is the upper left of Fig. 5, is expansion air path part schematic representation;

Fig. 7 is the lower right-most portion of Fig. 5, is tail gas voltage stabilizing structural scheme of mechanism;

Fig. 8 a, Fig. 8 b, Fig. 8 c and Fig. 8 d are respectively valve cam, exhaust cam, wedge cam, sampling cam profile schematic representation;

Among the figure: 1, motor generator set, 2, retarder, 3, bent axle, 4, the one-level cylinder, 5, secondary cylinder, 6, three-stage cylinder, 7, connecting rod A, 8, connecting rod B, 9, connecting rod C, 10, piston A, 11, piston B, 12, piston C, 13, the one-level suction valve, 14, the one-level outlet valve, 15, the secondary outlet valve, 16, the secondary suction valve, 17, three grades of outlet valves, 18, three grades of suction valves, 19, cooler A, 20, cooler B, 21, cooler C, 22, recycle pump, 23, heat-insulating water tanks, 24, gas storage, 25, pressure gauge, 26, flow control valve, 27, stop valve, 28, filter cleaner A, 29, filter cleaner B, 30, oil expeller, 31, exsiccator, 32, pressure electrical apparatus release housing, 33, wire rope group A, 34, gas circuit is switched ball valve A, 35, gas circuit is switched ball valve B, 36, gas circuit is switched ball valve C, 37, gas circuit is switched ball valve D, 38, operating mode isolation ball valve A, 39, operating mode isolation ball valve B, 40, operating mode isolation ball valve C, 41, bi-bit bi-pass distributing valve A, 42, gas circuit is switched ball valve E, 43, gas circuit is switched ball valve F, 44, gas circuit is switched ball valve G, 45, bi-bit bi-pass distributing valve B, 46, regenerator A, 47, regenerator B, 48, regenerator C, 49, gas circuit is switched ball valve H, 50, timing chain B, 52, timing sprocket A, 53, timing chain A, 54, crankshaft sprocket, 56, clutch, 57, wire rope group B, 58, wire rope C, 60, small piston, 61, the pressure-sensitive spring, 63, trigger push rod A, 64, spring A, 65, the comparator cylinder, 66, the comparator piston, 67, drive gas tank, 68, two five-way guiding valves, 69, valve core of the spool valve, 72, double-acting cylinder, 73, gas distribution piston, 74, the distribution tooth bar, 75, gas wiring gear, 76, valve cam A, 77, valve cam B, 80, touch a C, 81, touch a D, 82, touch an A, 83, touch a pedestal A, 84, touch a B, 85, touch a pedestal B, 86, electrical apparatus release B housing, 87, the electrical apparatus release hook, 88, spring B, 89, wire rope D, 90, intake valve A, 91, wedge cam A, 92, exhaust valve A, 93, exhaust cam A, 94, timing sprocket E, 95, intake valve B, 96, wedge cam B, 97, exhaust valve B, 98, exhaust cam B, 99, timing sprocket C, 100, intake valve C, 101, wedge cam C, 102, exhaust valve C, 103, exhaust cam C, 104, timing sprocket B, 105, the sampling valve, 106, the sampling cam, 107, timing sprocket D, 112, trigger push rod B, 113, timing chain C, 114, water jacket A, 115, water jacket B, 116, water jacket C.

Embodiment

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

As Fig. 1-shown in Figure 8, the utility model overall structure comprises motor generator set 1, reversible air engine, gas storage 24 and heat-insulating water tanks 23 4 parts.Motor generator set 1 links to each other with the reversible air engine by retarder 2, and the reversible air engine links to each other with gas storage 24 with pipeline, and heat-insulating water tanks 23 connects cooler, regenerator and the water jacket of reversible air engine; Gas storage 24 is provided with pressure gauge 25.

Motor generator set 1 is double generator or the double motor of making generator of making motor, or cage type induction motor or synchronous machine, or the reversible motor generator set in the pumped storage power station.

Gas storage 24 is for cavern or the salt rock stratum is empty or mine or oil gas well or tunnel of discarding or gas holder or steel cylinder or the carbon fiber gas tank that is deposited in the seabed.

Heat-insulating water tanks 23 is the common water tank of peripheral hardware heat insulation layer structure, and heat-insulating water tanks 23 links to each other with regenerator with water jacket, the cooler of reversible air engine through recycle pump 22.

The reversible air engine mainly comprises piston type main frame, air path part, tail gas voltage stabilizing mechanism three parts.The piston type main frame is made up of support, cylinder, piston, connecting rod, bent axle 3, water jacket.Cylinder is fixed on the support, and progression is three grades, has in the cylinder along the piston of cylinder body axially reciprocating, and piston links by wrist pin and connecting rod, and the other end of connecting rod and bent axle 3 link.One end connection reducer 2 of bent axle 3, the other end links to each other with valve cam with crankshaft sprocket 54 by clutch 56.Cylinder body is with water jacket outward, links to each other with heat-insulating water tanks 23 through recycle pump 22 with after the pipeline series connection between water jacket.

Wherein, on the cylinder top of one-level cylinder 4 one-level outlet valve 14, one-level suction valve 13, intake valve A90 and exhaust valve A92 are installed, the cylinder of secondary cylinder 5 is equipped with secondary outlet valve 15, secondary suction valve 16, intake valve B95 and exhaust valve B97 on the top, and three grades of outlet valves 17, three grades of suction valves 18, intake valve C100, exhaust valve C102 and sampling valves 105 are installed on the cylinder top of three-stage cylinder 6.The outside of one-level cylinder 4, secondary cylinder 5 and three-stage cylinder 6 is respectively equipped with water jacket A114, water jacket B115 and water jacket C116.

Air path part can be divided into compression air path part and expansion air path part, the compression air path part mainly comprises suction valve, outlet valve, gas circuit is switched ball valve, the operating mode isolation ball valve, the pressure electrical apparatus release, air-strainer, oil expeller 30, exsiccator 31 and pipeline, the expansion air path part mainly comprises intake valve, exhaust valve, the bi-bit bi-pass distributing valve, gas circuit is switched ball valve and pipeline, suction valve, outlet valve, intake valve, exhaust valve is arranged on cylinder head, intake valve and wedge cam coupling, exhaust valve and exhaust cam coupling, exhaust cam links to each other with crankshaft sprocket 54 by chain transmission.

Chain transmission comprises that sampling cam 106 is connected with exhaust cam C103 is coaxial, timing sprocket E94 is connected with timing sprocket D107 by timing chain C113, timing sprocket C99 is connected with timing sprocket B104 by timing chain B50, timing sprocket A52 connects by timing chain A53 crankshaft sprocket 54, and crankshaft sprocket 54 is by

clutch

56 and 3 coaxial connections of bent axle; Timing sprocket D107 is connected with timing sprocket C99 is coaxial with exhaust cam B98, and timing sprocket B104 is connected with timing sprocket A52 is coaxial with sampling cam 106, exhaust cam C103.

The gas circuit structure of compression air path part is, three grades of suction valves 18 connect filter cleaner B29 with pipeline, three grades of outlet valves 17 connect operating mode isolation ball valve C40 with pipeline, the operating mode isolation ball valve C40 the other end connects the gas access of the coiler of cooler C21 with pipeline, the gas outlet of coiler connects secondary suction valve 16 with pipeline, and secondary outlet valve 15 connects operating mode isolation ball valve B39 with pipeline;

The operating mode isolation ball valve B39 the other end is told two branch roads, article one, switch behind the ball valve C36 with the gas access of the coiler of cooler B20 through gas circuit and link to each other, another switches behind ball valve D37 with the pipeline of one-level outlet valve 13 after through operating mode isolation ball valve A38 through gas circuit and converges, and converges the back and links to each other with the gas access of the coiler of cooler A19;

One-level suction valve 14 connects two branch roads, and one switches behind the ball valve B35 with the gas outlet of the coiler of cooler B20 through gas circuit and to link to each other, and one through linking to each other with filter cleaner A28 behind the gas circuit switching ball valve A34;

Cooler A19 connects two branch roads, and one connects pressure electrical apparatus release 32, and another links to each other with gas storage 24 through oil expeller 30, exsiccator 31, stop valve 27 backs.

Described compression air path part comprises the pressure electrical apparatus release, and the pressure tripper structure mainly is made up of pressure electrical apparatus release housing 32, small piston 60, pressure-sensitive spring 61, triggering push rod A63, spring A64, wire rope group A33 etc.Wherein small piston 60 right-hand members are being against under the pressure of pressure-sensitive spring 61 on the pressure electrical apparatus release housing 32, small piston 60 left ends are designed to hook-shaped, hooking triggering push rod A63 can not move down it under spring A64 pressure, the upper end and the wire rope group A33 that trigger push rod A63 link, and the other end of wire rope group A33 switches ball valve A34, gas circuit switching ball valve B35 with gas circuit respectively, gas circuit switching ball valve C36, gas circuit switching ball valve D37 link to each other.

The gas circuit structure of expansion air path part is, gas storage links to each other with the gas access of the coiler of regenerator A46 through flow control valve 26, the gas outlet of the coiler of regenerator A46 is told two branch roads, article one, switch ball valve E42 through gas circuit, bi-bit bi-pass distributing valve A41 links to each other with intake valve A90, article one, switch ball valve H49 through gas circuit, the gas outlet of bi-bit bi-pass distributing valve B45 and the coiler of regenerator B47 switches pipeline behind the ball valve G44 through gas circuit and converges the back and link to each other with intake valve B95, exhaust valve A92 tells two branch roads, article one, link to each other with the gas access of the coiler of regenerator B47, another switches ball valve F43 through gas circuit and links to each other with atmosphere;

Exhaust valve B97 links to each other with pipeline with the gas access of the coiler of regenerator C48, the gas outlet of the coiler of regenerator C48 links to each other with pipeline with intake valve C100, exhaust valve C102 directly links to each other with atmosphere, and sampling valve 105 links to each other with the upper cylinder of the comparator cylinder 65 in pipeline and the tail gas voltage stabilizing mechanism.Cooler all adopts parallel way to link to each other with regenerator, and links to each other with heat-insulating water tanks 23 with recycle pump 22 by pipeline.

One-level suction valve 13, secondary suction valve 16, three grades of suction valves 18, one-level outlet valve 14, secondary outlet valve 15 and three grades of outlet valves 17 are ring valve or netted valve; The upper end of described intake valve A90, intake valve B95 and intake valve C100 is coupled with wedge cam A91, the wedge cam B96 and the wedge cam C101 that are arranged on the piston type body respectively; The upper end of described exhaust valve A92, exhaust valve B97 and exhaust valve C102 respectively be arranged on exhaust cam A93, exhaust cam B98 on the piston type body and exhaust cam C103 coupling, sampling valve 105 upper ends be arranged on 106 couplings of piston type body up-sampling cam.

Exhaust cam A93, exhaust cam B98 and exhaust cam C103 are tray type structure, and wherein, basic circle and tip circle respectively account for a semi-perimeter, and transition position adopts round-corner transition; Exhaust cam A93, exhaust cam B98 and exhaust cam C103 by camshaft be connected with timing sprocket A52 is coaxial with timing sprocket E94, timing sprocket C99 respectively;

Tail gas voltage stabilizing mechanism comprises comparator cylinder 65, comparator piston 66, drive gas tank 67, two five-way guiding valves 68, double-acting cylinder 72, gas distribution piston 73, distribution tooth bar 74, gas wiring gear 75, valve cam A76, valve cam B77, touch an A82, touch a B84, touch a C80, touch a D81, touch a pedestal A83, touch a pedestal B85, wire rope C58, wire rope D89, electrical apparatus release B housing 86, electrical apparatus release hook 87, trigger push rod B112, spring B 88, wire rope group B57 etc.Wherein, be provided with comparator piston 66 in the comparator cylinder 65, comparator piston 66 ends link to each other with the valve core of the spool valve 69 of two five-way guiding valves 68, comparator cylinder 65 links to each other with sampling valve 105, be in the centre of comparator cylinder 65 during 66 beginnings of comparator piston, the lower seal of comparator cylinder 65 a certain amount of gas that pressure equates with ambient pressure, and comparator piston 66 ends link to each other with the valve core of the spool valve 69 of two five-way guiding valves 68;

Drive the propellant that is filled with in the gas tank about 0.4Mpa, drive gas tank connects two five-way guiding valves with pipeline via intermedia suction port, the air outlet up and down of two five-way guiding valves of two paths of via intermedia both sides links to each other with left cylinder with the right cylinder of double-acting cylinder respectively, and two relief openings of two five-way guiding valves link to each other with atmosphere; , gas distribution piston 73 is arranged in the double-acting cylinder 72, the left end of the distribution tooth bar 74 on the left end of gas distribution piston 73 and double-acting cylinder 72 tops fixedly links, distribution tooth bar 74 by with the engagement of gas wiring gear 75.

Valve cam B77 outer rim is provided with C shape and touches a pedestal A83, touch to be nested with respectively in the vertical hole in two stulls of a pedestal A83 and touch an A82 and touch a C80, touch an A82 be positioned at valve cam B77 directly over, touch a C be positioned at valve cam B77 under;

Touch an A82, touching a C80 is nested in and touches in the hole of pedestal A83 and can move along the hole axial direction, touch a B84, touching a D81 is nested in and touches in the hole of pedestal B85 and can move along the hole axial direction, touch a pedestal A83 be in stationary state and touch an A82 be positioned at valve cam B77 outer rim directly over, touch a C80 be positioned at valve cam B77 outer rim under, gas wiring gear 75 is coaxial with valve cam A76, touch a pedestal B85 and be fixed on the gas wiring gear 75, touch a B84, touching a D81 distributes along gas wiring gear 75 diametrically contrapositions.

Touch an A82, touch a B84 and link with the two ends of wire rope C58 respectively, touch a C80, touch a D81 and link with the two ends of wire rope D89 respectively by lever by lever.Wire rope C58 and bi-bit bi-pass distributing valve A41 link, and wire rope D89 and bi-bit bi-pass distributing valve B45 link.

Double-acting cylinder 72 left ends are fixedly connected with electrical apparatus release B housing 86, be provided with electrical apparatus release hook 87 in the electrical apparatus release B housing 86, electrical apparatus release hook 87 is provided with and triggers push rod B112, trigger on the push rod B112 and be with spring B 88, trigger push rod B112 upper end and be connected with wire rope group B57 one end, the wire rope group B57 the other end switches ball valve F43, gas circuit switching ball valve G44 with gas circuit switching ball valve E42, gas circuit respectively, gas circuit is switched ball valve H49 and is connected;

Working principle

The design pressure of this energy-storage system is 0.4-6.4Mpa, and the volume ratio of one-level cylinder 4, secondary cylinder 5, three-stage cylinder 6 is designed to 1: 4: 16, divides accumulation of energy operating mode and generating operation mode specifically to set forth below.

The accumulation of energy operating mode:

Under the accumulation of energy operating mode, motor drives reversible air engine (this moment is as compressor) is converted into the electric energy more than needed in the electrical network compression energy of air, as shown in Figure 3, its working procedure and existing air compressor basically identical during beginning disconnect clutch 56, adjust wedge cam and exhaust cam, make the goal door and the exhaust valve of each cylinder all be in closed condition, simultaneously flow control valve 26 is turn-offed, stop valve 27 is opened, thereby the expansion gas circuit is isolated away from the compression gas circuit.Heat-exchange system will be pressurized air cooling and store heat.

Pressure during the compression beginning in the gas storage 24 is 0.4Mpa, gas circuit is switched ball valve A34, gas circuit is switched ball valve D37 and is in open mode, gas circuit is switched ball valve B35, gas circuit is switched ball valve C36 and is in closed condition, gas circuit structure is that gas is through being secondary cylinder 5, three-stage cylinder 6 backs in parallel are in parallel with one-level cylinder 4, gas enters cylinder after filtering through air-strainer, after cylinder compression through oil expeller 30 oil removings, exsiccator 31 dryings enter gas storage 24, because secondary cylinder 5, the volume ratio of three-stage cylinder 6 is designed to 1: 4, outlet pressure is by 0.4Mpa during beginning, thereby does not have the excess compression problem.Along with the raising of pressure in the gas storage 24, the moment that outlet valve is opened postpones gradually.When pressure equals 1.6Mpa, small piston 60 compresses pressure-sensitive spring 61 under gas pressure and then moves to left, triggering push rod A63 will lose and support and ejected by spring A64, and then drive wire rope group A33 produces pulling force, drive gas circuit and switch ball valve A34, gas circuit is switched ball valve B35, gas circuit is switched ball valve C36, gas circuit is switched each spinning 90 degree of ball valve D37 spool, gas circuit is switched ball valve A34, gas circuit switching ball valve D37 closes, gas circuit is switched ball valve B35, gas circuit switching ball valve C36 opens, thereby gas circuit becomes three grades of series connection, outlet pressure is continued to improve by 1.6Mpa, until reaching 6.4Mpa, compression process finishes.

Generating operation mode:

Under generating operation mode, pressurized gas in the gas storage 24 is by the acting of expanding, drive engine power generation, electric energy is returned electrical network or the inner use of user. with operating mode isolation ball valve A38, operating mode isolation ball valve B39, operating mode isolation ball valve C40 turn-offs, because suction valve is an one-way valve, in inflation process, can close automatically, simultaneously flow control valve 26 is opened, stop valve 27 turn-offs, the compression gas circuit can be isolated away from the expansion gas circuit. and keep crankshaft sprockets 54 and valve cam rotates synchronously by clutch 56, and exhaust valve C102 open just when adjusting to piston C12 and being positioned at lower dead center with bent axle 3. the heat-exchange system backheat pressurized air this moment heat stored of release also.

Pressure when expanding beginning in the gas storage 24 is 6.4Mpa, gas circuit is switched ball valve E42, gas circuit is switched ball valve G44 and is in open mode, gas circuit is switched ball valve F43, gas circuit is switched ball valve H49 and is in closed condition, gas circuit structure is that gas enters atmosphere after through three grades of expansions, air inlet timing this moment is controlled (bi-bit bi-pass distributing valve B45 is inoperative this moment) by bi-bit bi-pass distributing valve A41, when piston A10 ran to top dead center, the salient point of valve cam A76, valve cam B77 also rotated to peak.Touching an A82 this moment can move under the active force of the salient point of valve cam B77, by the lever transmission with the drop-down segment distance of the left end of wire rope C58, and then the spool that drives bi-bit bi-pass distributing valve A41 switches valve position, make the pressurized gas in the gas storage 24 enter one-level cylinder 4, promote piston A10 and move to lower dead center by top dead center.Simultaneously the left end of wire rope C58 moves down a segment distance and the right-hand member of wire rope C58 driven touch a B84 and move a segment distance towards the center of circle.

Along with moving downward of piston A10, valve cam A76, valve cam B77 clockwise direction rotation thereupon.When the salient point of valve cam A76 when touching a B84 and contact, touching a B84 can deviate from the center of circle and move under the salient point active force of valve cam A76, by the lever transmission with the drop-down segment distance of the right-hand member of wire rope C58, and then the spool that drives bi-bit bi-pass distributing valve A41 switches valve position, A41 closes with the bi-bit bi-pass distributing valve, intake process finishes, and the high pressure air in the one-level cylinder 4 is known from experience continuation expansion under self pressure, promotes piston A10 and continues descending.

When piston A10 runs to lower dead center, exhaust cam A93 opens exhaust valve A92, gas in the one-level cylinder 4 enters after by regenerator B47 backheat and continues in the secondary cylinder 5 to expand, and promotes piston B11 and moves downwards, and connecting rod A7 and connecting rod B8 drive bent axle 3 and be rotated in the forward.When piston B11 ran to lower dead center, exhaust cam B98 opened exhaust valve B97, and the gas in the one-level cylinder 4 enters after by regenerator C48 backheat and continues in the three-stage cylinder 6 to expand, and promotes piston C 12 operation downwards; Connecting rod A7, connecting rod B8 and connecting rod C9 drive bent axle 3 to be continued to be rotated in the forward, and so moves in circles, and then motor is finished the forward startup.

When piston C 12 was about to run to lower dead center, sampling valve 105 was opened under the drive of sampling cam 106, and three-stage cylinder 6 and comparator cylinder 65 tops are linked.If three-stage cylinder 6 at the pressure of expansion stroke end greater than ambient pressure, then comparator piston 66 can move down under the big pressure effect in top, and drive valve core of the spool valve 69 moves down a segment distance, drive the left cylinder that gas tank 67 interior gases just enter double-acting cylinder 72, double-acting cylinder 72 right cylinders are communicated with atmosphere, gas distribution piston 73 just drives distribution tooth bar 74 and moves to right under action of pressure, gas wiring gear 75 just can be rotated counterclockwise to drive to touch on the B84 and move, thereby the moment that bi-bit bi-pass distributing valve A41 is turn-offed shifts to an earlier date, reduced air inflow, tail gas pressure is reduced.If three-stage cylinder 6 at the pressure of expansion stroke end less than ambient pressure, then comparator piston 66 can move under the big pressure effect in bottom, and move a segment distance on the drive valve core of the spool valve 69, drive the right cylinder that gas tank 67 interior gases just enter double-acting cylinder 72, double-acting cylinder 72 left cylinders are communicated with atmosphere, gas distribution piston 73 just drives distribution tooth bar 74 and moves to left under action of pressure, gas wiring gear 75 just can turn clockwise to drive and touches a B84 and move down, thereby the moment that bi-bit bi-pass distributing valve A41 is turn-offed lags behind, increased air inflow, tail gas pressure is raise, avoided piston under extraneous elevated pressures, to do negative work.

By above process as seen, be a reverse feedback adjustment process with the tail gas pressure stability in the process that equates with ambient pressure, by regulating the expansion that air inlet formally changes air inflow and makes it to obtain fullest, avoided the tail gas loss, improved capacity usage ratio.Along with the carrying out of inflation process, the pressure in the gas storage 24 can reduce gradually, and gas wiring gear 75 just turns clockwise gradually to drive and touches a B84 and move down, and air inflow is increased.

When touching a B84 soon near minimum point, the left end of gas distribution piston 73 and electrical apparatus release are linked up with 87 right-hand members and are contacted and promote electrical apparatus release hook 87 and move to left, at this moment, triggering push rod B112 will lose and support and ejected by spring B 88, and then drive wire rope group B57 produces pulling force, drive gas circuit and switch ball valve E42, gas circuit is switched ball valve F43, gas circuit is switched ball valve G44, gas circuit is switched each spinning 90 degree of ball valve H49 spool, make gas circuit switch ball valve E42, gas circuit switching ball valve G44 closes, gas circuit is switched ball valve F43, gas circuit switching ball valve H49 opens, thereby gas circuit switches to two-stage series connection to expand, and one-level cylinder 4 excises from gas circuit.After gas circuit is switched, the air inlet timing is controlled (bi-bit bi-pass distributing valve A41 is inoperative this moment) by bi-bit bi-pass distributing valve B45, when valve cam B77 jack-up was touched C80, bi-bit bi-pass distributing valve B45 opened, and bi-bit bi-pass distributing valve B45 turn-offs when valve cam A76 jack-up is touched D81.

Because being expanded by three grades of series connection suddenly, gas circuit structure becomes the two-stage series connection expansion, tail gas pressure can raise suddenly, gas wiring gear 75 just can be rotated counterclockwise to drive and touches a D81 and move down into a lower position, thereby shifted to an earlier date in the moment of valve cam A76, reduced air inflow, made the tail gas pressure recovery for to equate with ambient pressure.Along with pressure further reduces, touch a D81 and move on gradually increasing air inflow, when the pressure in the gas storage 24 will be for 0.4Mpa, inflation process finished.By above process as seen,, make the inflation process of gas more reasonable, improved the adaptive capacity of system variation in pressure owing to adopted the change cylinder technology.

Such scheme is a specific embodiment of the present utility model, and all that be familiar with that those skilled in the art can go out from the disclosed content reasonable prediction of the utility model are equal to and substitute and obvious modification, all should think protection domain of the present utility model.

Claims

1. A compressed air thermal energy storage system based on a reversible air engine, which is characterized in that it includes a motor generator, a reversible air engine, a gas storage and an insulated water tank, and the motor generator communicates with the reversible The air motor is connected, and the reversible air motor is connected with the gas storage and the heat preservation water tank respectively.

2. The compressed air thermal energy storage system based on a reversible air engine according to claim 1, characterized in that: the motor generator is a generator that doubles as a motor or a motor that doubles as a generator, or a squirrel cage induction or synchronous motors, or reversible motor-generators in pumped storage power plants.

3. The compressed air thermal energy storage system based on a reversible air engine according to claim 1, characterized in that: the gas storage is a cave or a cave in a salt rock layer or an abandoned mine or oil and gas well or a tunnel or a subsidence Gas storage tanks or steel cylinders or carbon fiber gas tanks on the seabed.

4. The compressed air thermal energy storage system based on a reversible air engine according to claim 1, characterized in that: the thermal insulation water tank is an ordinary water tank with an external insulation layer structure, and the thermal insulation water tank passes through a circulating pump and a reversible The water jacket and cooler of the air engine are connected with the regenerator.

5. The compressed air thermal energy storage system based on a reversible air engine according to claim 1, characterized in that: the reversible air engine comprises a piston body, an air circuit part and an exhaust gas pressure stabilizing mechanism; the piston body It includes machine base, cylinder, piston, connecting rod, crankshaft and water jacket. The cylinder is fixed on the machine base. The other end of the connecting rod is connected to the crankshaft; one end of the crankshaft is connected to the reducer, and the other end is connected to the crankshaft sprocket and the gas distribution cam through a clutch; there is a water jacket on the cylinder body, and the water jacket is connected in series with the circulating pump and the valve. The insulation water tank is connected; among them, the first-stage exhaust valve, the first-stage intake valve, the intake valve A and the exhaust valve A are installed on the top of the first-stage cylinder, and the second-stage exhaust valve is installed on the top of the second-stage cylinder. , two-stage intake valve, intake valve B and exhaust valve B, three-stage exhaust valve, three-stage intake valve, intake valve C, exhaust valve C and sampling valve are installed on the cylinder top of the three-stage cylinder .

6. The compressed air thermal energy storage system based on a reversible air engine according to claim 5, characterized in that: the air circuit part can be divided into a compressed air circuit part and an expansion air circuit part, and the compressed air circuit part includes Intake valve, exhaust valve, air circuit switching ball valve, working condition isolation ball valve, pressure release, air filter, degreaser, dryer and pipeline;

The expansion gas circuit part includes intake valve, exhaust valve, two-position two-way valve, gas circuit switching ball valve and pipeline. The intake valve, exhaust valve, intake valve and exhaust valve are set on the top of the cylinder. The door is coupled with the moving cam, the exhaust valve is coupled with the exhaust cam, and the exhaust cam is connected with the crankshaft sprocket through a chain drive;

The chain transmission device includes a coaxial connection between the sampling cam and the exhaust cam C, the timing sprocket E is connected with the timing sprocket D through the timing chain C, and the timing sprocket C is connected with the timing sprocket through the timing chain B B connection, timing sprocket A is connected with crankshaft sprocket through timing chain A, crankshaft sprocket is coaxially connected with crankshaft through clutch; timing sprocket D is coaxially connected with exhaust cam B and timing sprocket C, and timing Timing sprocket B is coaxially connected with sampling cam, exhaust cam C and timing sprocket A;

The air circuit structure of the compressed air circuit is that the three-stage intake valve is connected to the filter B through the pipeline, the three-stage exhaust valve is connected to the working condition isolation ball valve C through the pipeline, and the other end of the working condition isolation ball valve C is connected to the filter B through the pipeline. The gas inlet of the serpentine tube of the cooling heat exchanger C, the gas outlet of the serpentine tube are connected to the secondary inlet valve through the pipeline, and the secondary exhaust valve is connected to the working condition isolation ball valve B through the pipeline;

The other end of the working condition isolation ball valve B is divided into two branches, one is connected to the gas inlet of the serpentine tube of the cooling heat exchanger B after passing through the gas circuit switching ball valve C, and the other is connected to the first-stage row after passing through the gas circuit switching ball valve D The gas valve is connected to the gas inlet of the serpentine tube of the cooling heat exchanger A after passing through the pipeline after the working condition isolation ball valve A;

The primary intake valve is connected to two branches, one is connected to the gas outlet of the serpentine tube of cooling heat exchanger B after passing through the gas circuit switching ball valve B, and the other is connected to the filter A after passing through the gas circuit switching ball valve A;

Cooling heat exchanger A is connected to two branches, one is connected to the pressure release device, and the other is connected to the gas storage after passing through the degreaser, dryer and shut-off valve.

7. The compressed air thermal energy storage system based on a reversible air engine according to claim 6, wherein the compressed air circuit part includes a pressure release, and the pressure release includes a pressure release housing Body, small piston, pressure-sensitive spring, trigger ejector rod A, spring A, wire rope group A, wherein the right end of the small piston is pressed against the housing of the pressure release under the pressure of the pressure-sensitive spring, the left end of the small piston is in the shape of a hook, and the hook Hook the trigger ejector rod A, the spring A is covered on the ejector rod A, the upper end of the trigger ejector rod A is connected with the steel wire rope group A, and the other end of the steel wire rope group A is respectively connected with the air path switching ball valve A, the air path switching ball valve B, the gas path The circuit switching ball valve C and the air circuit switching ball valve D are connected.

8. The compressed air thermal energy storage system based on a reversible air engine according to claim 6, characterized in that: the gas path structure of the expansion gas path part is that the gas storage is exchanged with the heat recovery through the flow regulating valve. The gas inlet of the serpentine tube of the heater A is connected; the gas outlet of the serpentine tube of the recuperator A is divided into two branches, one through the gas circuit switching ball valve E, the two-position two-way gas distribution valve A and the inlet The gas valve A is connected, and the gas outlet of the serpentine tube of the regenerative heat exchanger B passes through the gas circuit switching ball valve H, the two-position two-way gas distribution valve B, and the other pipeline merges with the inlet The valve B is connected; the exhaust valve A is divided into two branches, one is connected with the gas inlet of the serpentine tube of the regenerator B, and the other is connected with the atmosphere through the gas circuit switching ball valve F;

The exhaust valve B is connected with the gas inlet of the serpentine tube of the recuperator C through a pipeline, and the gas outlet of the serpentine tube of the recuperator C is connected with the intake valve C on the three-stage cylinder through a pipeline ; The exhaust valve C is directly connected to the atmosphere, and the sampling valve is connected to the upper cylinder of the comparator cylinder in the exhaust gas pressure stabilizing mechanism through pipelines; the cooler and the regenerator are connected in parallel, and are connected to the circulation pump and heat preservation through pipelines The water tank is connected.

9. The compressed air thermal energy storage system based on a reversible air engine according to claim 5, characterized in that: the first-stage intake valve, the second-stage intake valve, the third-stage intake valve, the first-stage exhaust valve The gas valve, the secondary exhaust valve and the tertiary exhaust valve are ring valves or mesh valves; the upper ends of the intake valve A, intake valve B and intake valve C are respectively arranged on the piston body The moving cam A, the moving cam B and the moving cam C are coupled; the upper ends of the exhaust valve A, the exhaust valve B and the exhaust valve C are respectively connected with the exhaust cam A and the exhaust cam B arranged on the piston body. It is coupled with the exhaust cam C, and the upper end of the sampling valve is coupled with the sampling cam set on the piston body.

The exhaust cam A, exhaust cam B and exhaust cam C are all disc structures, wherein the base circle and the top circle each occupy half of the perimeter, and the transition is rounded; the exhaust cam A, the exhaust cam B and exhaust cam C are coaxially connected with timing sprocket E, timing sprocket C and timing sprocket A respectively through the camshaft;

The sampling cam is coaxially connected with the exhaust cam C, the timing sprocket E, timing sprocket C and timing sprocket A are all connected with the crankshaft sprocket through a chain, and the crankshaft sprocket is coaxially connected with the crankshaft through a clutch.

10. The compressed air thermal energy storage system based on a reversible air engine according to claim 5, characterized in that: the exhaust gas pressure stabilizing mechanism includes a comparator cylinder, a comparator piston, a driving gas tank, a two-position five-way Spool valve, double-acting cylinder, gas distribution piston, gas distribution rack, gas distribution gear, gas distribution cam A, gas distribution cam B, contact C, contact D, contact A, contact base A. Touch head B, touch head base B, steel wire rope C, steel wire rope D, trip unit B shell, trip unit hook, trigger ejector rod B, spring B, wire rope group B; Comparator piston, the end of the comparator piston is connected to the spool valve core of the two-position five-way slide valve, the drive gas tank is filled with drive gas, and the drive gas tank is connected to the air inlet of the middle passage of the two-position five-way slide valve , the upper and lower air outlets of the two two-position five-way slide valves on both sides of the middle passage are respectively connected to the right cylinder and left cylinder of the double-acting cylinder, and the two exhaust ports of the two-position five-way slide valve are connected to the atmosphere;

The gas distribution piston is set in the double-acting cylinder, the left end of the gas distribution piston is fixedly connected with the left end of the gas distribution rack arranged on the upper part of the double-acting cylinder, and the gas distribution rack and the gas distribution gear mesh with each other;

The gas distribution gear is coaxial with the gas distribution cam A, and the contact head base B is fixed on the gas distribution gear, and two contact points distributed along the radial direction of the gas distribution gear are nested in the hole of the contact head base B. Head B and touch head D;

The left end of the double-acting cylinder is fixedly connected with the tripper B housing, and the tripper B housing is provided with a tripper hook. The tripper hook is provided with a trigger ejector rod B. The upper end of the ejector rod B is connected to one end of the steel wire rope group B, and the other end of the steel wire rope group B is respectively connected to the gas circuit switching ball valve E, the gas circuit switching ball valve F, the gas circuit switching ball valve G, and the gas circuit switching ball valve H;

The outer edge of the gas distribution cam B is provided with a C-shaped contact head base A, and the longitudinal holes on the two cross braces of the contact head base A are respectively nested with the contact head A and the contact head C. The head A is located directly above the gas distribution cam B, and the contact head C is located directly below the gas distribution cam B;

The touch head A and the touch head B are respectively connected with the two ends of the thin steel wire rope group C through the lever, and the touch head C and the touch head D are respectively connected with the two ends of the thin steel wire rope group D through the lever; the steel wire rope group C and the The two-position two-way gas distribution valve A is connected, and the thin wire rope group D is connected with the two-position two-way gas distribution valve B.