CN206726596U - One kind miniaturization Stirling engine teaching experiment test platform - Google Patents

Abstract

The utility model discloses one kind to minimize Stirling engine teaching experiment test platform, including Stirling prototype, data collection process and control system, automatically controls fuel converting system and fixed rack；Data collection process and control system are made up of single-chip microcomputer, sensor and controller, to the control completed data collection process He automatically control fuel converting system；The fuel converting system that automatically controls is fixed on fixed rack, and it is controlled by data collection process and control system, to complete fuel conversion；Automatically controlling fuel converting system includes igniter, conversion equipment, extinguishing means, and conversion equipment is fixed on the bottom plate of fixed rack, and igniter, extinguishing means and Stirling prototype are placed next to each other in around round turntable respectively.The utility model realizes the automatic measurement of Stirling-electric hybrid stable operation data and the function of fuel automatic conversion.

Description

One kind miniaturization Stirling engine teaching experiment test platform

Technical field

It the utility model is related to a kind of miniaturization Stirling engine, the particularly teaching for engine direction undergraduate The Stirling engine teaching experiment test that can synthetically complete fuel conversion and be shown with Data Collection of miniaturization used Platform testing system.

Background technology

Engine test teaching is that culture energy source and power direction undergraduate applies to learned relevant knowledge, with the side of experiment Method research Stirling engine, solves the important step of Stirling engine relevant issues, and guiding student can be from engine Structure structure, engine characteristics etc. grasp in many aspects the operation principle of Stirling engine, characteristic, construction and its mutually close The synthetic instruction method of system.Engine test teaching is advantageous to training student to the structural and functional characteristic of Stirling engine Recognize, the manipulative ability of exercise student ', improve the innovation ability of student.

At present, there are many outstanding Platform of Experimental Teaching, such as patent No. CN201510528289.9 technology A kind of crane teaching experiment platform mentioned in document, and mentioned in patent No. CN201510830418.X technical literatures A kind of parallel Multipurpose teaching experiment porch, they are all functional more in terms of the Functional Design of experiment porch and structure design Sample, the advantages that content is comprehensive.It is well known that Stirling engine Platform of Experimental Teaching, except simple model bare machine, is exactly Huge technical grade Stirling-electric hybrid.Simple Stirling prototype only has a set of to be built according to Stirling thermodynamic cycle principle Complete mechanical mechanism is, it is necessary to artificial fuel arranged, without data acquisition device.Such as patent No. CN201220515492.4 technology A kind of Stirling engine model mentioned in document, it is a kind of embodiment Stirling engine operation characteristic and principle well Model, complete Stirling cycle acting can be completed, and electric energy is converted into by generator.But if it be used for colleges and universities this In terms of special woods engine test teaching, its process is simply uninteresting, and content is single, can not evoke student interests, and is difficult to embody this The service performance of special woods engine, is unfavorable for Students ' Learning.Large-scale technical grade Stirling-electric hybrid, there is complete sensor device, It is readily put into actual use.But its complicated bulky principle and fortune for being unfavorable for student and being visually known Stirling-electric hybrid Row characteristic.It is a kind of very practical such as a kind of Stirling engine mentioned in patent No. CN2014072079.0 technical literatures And ripe technical grade Stirling engine.But if using it for colleges and universities' Stirling engine experimental teaching, it seems again Complicated, volume is excessively huge, and therefore, it is difficult to embody the characteristics of stirling engine is simple in construction, fuel is various, it is difficult to be Used in school instruction experiment.Now, a kind of both enough miniaturizations are needed in terms of Stirling engine teaching, there is Data Collection again Processing and the Stirling engine Platform of Experimental Teaching of automatic control function.But at present, it is real without a kind of Stirling engine Testing teaching platform, both volume is closed, and suitable convenient experiment and can enough possesses data collection process and automatic control function.

The reason for applicant comprehensive analysis causes above mentioned problem to occur, discovery are primarily due to Stirling engine experiment Teaching platform lacks the control function of fuel automatic conversion, it is difficult to embodies the characteristics of its fuel is various, content is single, can not evoke Student interests；And lack data collection process and control system, the simple uninteresting fortune of Stirling engine process can not be embodied Turn characteristic, be unfavorable for Students ' Learning.If a kind of Stirling engine Platform of Experimental Teaching can be found, both volume properly facilitated Experiment, and can enough possess the function of data collection process and fuel automatic conversion, it is clear that contribute to Students ' Learning Stirling to start Machine relevant knowledge, evokes student interests.

The content of the invention

The utility model is bulky in order to solve the experiment porch of existing Stirling-electric hybrid, teaching experiment inconvenience, and does not have There is the defects of control function of data collection process and fuel automatic conversion, experiment inconvenience and uninteresting dull process, this practicality is new Type provides a kind of miniaturization Stirling engine teaching experiment test platform.

Technical scheme is used by the utility model solves its technical problem：

One kind miniaturization Stirling engine teaching experiment test platform, including Stirling prototype, data collection process And control system, automatically control fuel converting system and fixed rack；The data collection process and control system are by monolithic Machine, sensor and controller composition, to the control completed data collection process He automatically control fuel converting system；It is described Automatically control fuel converting system to be fixed on fixed rack, it is controlled by data collection process and control system, to complete Changed into fuel；Automatically controlling fuel converting system includes igniter, conversion equipment, extinguishing means, and conversion equipment is fixed on On the bottom plate of fixed rack, conversion equipment includes round turntable mechanism, igniter, extinguishing means and Stirling prototype point It is not placed next to each other in successively around round turntable centered on the round turntable center of circle of round turntable mechanism.

Further, the round turntable mechanism also includes liquid fuel lamp, stepper motor and decelerator；Stepper motor With decelerator drive end axis connection, decelerator drive end can be in stepping electricity by being driven axis connection, round turntable with round turntable Rotated counterclockwise under machine driving；With 90 degree for one division on round turntable, often indexing is provided with a groove, four liquid fuel lamps It is individually positioned in four grooves of round turntable；The electrode of igniter two, the hot cylinder of Stirling prototype, extinguishing means block point It is not arranged in directly over the circular groove of three adjacent indexing of round turntable and is fixed on bottom plate with sequence counter-clockwise, residue one Individual empty indexing position.

Further, the igniter also includes battery, by monolithic processor controlled relay and transformer；Battery Positive pole is rectified pole by relay and transformer voltage supply and connected, and GND is connected with transformer voltage supply end negative pole；Suspended electrode Treating a liquid fuel wick both ends.

Further, the extinguishing means also includes cam motor, shaft coupling, camshaft, cam follower, cam electricity Owner's axis connection shaft coupling drive end, shaft coupling drive section connection camshaft, cam follower are located at directly over camshaft and can Upper and lower displacement is produced under actuated by cams, be connected block on cam follower.

Further, the sensor of the data collection process and control system include flame sensor, temperature sensor, Current sensor, voltage sensor, magnetometric sensor, pressure sensor and single-chip microcomputer；Flame sensor includes knock down the flame Sensor and flame sensor is lighted, knock down the flame sensor is detecting the fuel after igniter performs arc ignition action Combustion position, flame sensor is lighted to detect the fuel combustion situation after extinguishing means performs extinguishing action；TEMP Device is included to collect the hot cylinder temperature sensor of the hot cylinder temperature data of Stirling prototype, cold to collect Stirling prototype The cooling cylinder temperature sensor of cylinder temperature data and to collect the environment temperature sensor of ambient temperature data；Current sense Device is connected among the circuit that generator is power supply, to collect load current data；It is electromechanical that voltage sensor is connected in parallel on generating Collect load voltage data in the both ends loaded in road；Magnetometric sensor is fixed on the rear of engine flywheel, and in flywheel rim Demagnetic stack is fixed with, collects Speed of Reaction Wheels data；Pressure sensor is fixed on the bottom plate of fixed rack；Single-chip microcomputer with it is above-mentioned each Individual sensor element electrical connection.

Further, the data collection process and control system also include display screen, and display screen is fixed on fixed station On frame, with monolithic mechatronics.

Further, the fixed rack also includes Stirling prototype stage body, the igniting dress being separately fixed on bottom plate Put fixed mount, conversion equipment fixed mount, extinguishing means frame, sensor support frame；The Stirling prototype stage body can for height The level support platform of regulation.

The beneficial effects of the utility model are：

The utility model provides a kind of Stirling hair for possessing two kinds of functions of data collection process and fuel automatic conversion Motivation Platform of Experimental Teaching, realize the automatic measurement of Stirling-electric hybrid stable operation data and the function of fuel automatic conversion, energy Complete relevant Stirling-electric hybrid theory analysis, steady working condition measured operating parameter, actual efficiency experiment with computing.By this test platform Experiment, promote student to digest the knowwhy of Theory Course with practice, for later specialized course study, graduation set Meter, work all lays a good foundation even after.The utility model not only facilitates experimenter's operation, also improves safety Property so that experiment is more safe and effective.The utility model can also lift students ' interest of study, by participating in experiment student The characteristic of Stirling engine is solved, the desire for exciting student to explore.

Brief description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is axonometric drawing of the present utility model；

Fig. 2 is rear portion axonometric drawing of the present utility model；

Fig. 3 is turntable mechanism axonometric drawing of the present utility model；

Fig. 4 is cam mechanism axonometric drawing of the present utility model；

Fig. 5 is igniter axonometric drawing of the present utility model.

In figure：

1. Stirling prototype, 2. cooling cylinder temperature sensors, 3. Stirling prototype stage bodies, 4. light flame sensor, 5. No.1 sensor support block, 6. bottom plates, 7. pressure sensors, 8. battery case fixed mounts, 9. batteries, 10. transformers, 11. become Depressor fixed mount, 12. electrode fixed mounts, 13. decelerators, 14. stepper motors, 15. electrodes, 16. round turntables, the combustion of 17. liquid Expect lamp, 18. No. two sensor support blocks, 19. display screens, 20. knock down the flame sensors, 21. motor support blocks, 22. cams electricity Machine, 23. shaft couplings, 24. camshafts, 25. cam followers, 26. blocks, 27. driven member slideway shelfs, 28. hot cylinder TEMPs Device, 29. slideway shelf support blocks, 30. single-chip microcomputers, 31. magnetometric sensors, 32. small magnetic patch, 33. ignition location grooves, 34. heating positions Groove is put, 35. extinguish location groove, 36. empty indexing troughs, 37. relays.

Embodiment

Below in conjunction with accompanying drawing, and the control system included with reference to the utility model, further illustrate of the present utility model Technical scheme.

A kind of miniaturization Stirling engine teaching experiment test platform provided by the utility model can realize two big work( Energy：Data collection process, automatically control fuel conversion.

As shown in Figure 1 to Figure 3, a kind of miniaturization Stirling engine teaching experiment test platform, includes three systems： Data collection process and control system, automatically control fuel converting system and fixed rack.Data collection process and control system System is made up of single-chip microcomputer, sensor and controller, to complete data collection process and automatically control fuel converting system Control；Automatically control fuel converting system to be made up of igniter, conversion equipment, extinguishing means, by data collection process and control The control of system processed, to complete fuel conversion.Fixed rack, which includes bottom plate 6, igniter fixed mount, conversion equipment, to be fixed Frame, extinguishing means fixed mount and Stirling engine fixed station, each device of fuel converting system is automatically controlled to fixation And Stirling prototype.

Data collection process and control system include：Flame sensor, temperature sensor, current sensor, voltage sensor Device, magnetometric sensor 31, small magnetic patch 32, pressure sensor 7, display screen 19 and single-chip microcomputer 30.Data collection process and control System is to install data collection facility additional on the basis of original small-sized Stirling prototype with microgenerator, is collected The service data of small-sized Stirling prototype.Flame sensor shares two：One is knock down the flame sensor 20, is fixed on convex On No. two sensor support blocks 18 on the side of turbin generator 22, the infrared collection head alignment igniter of the front end of knock down the flame sensor 20 Two electrode centers, to detect the fuel combustion situation after igniter performs arc ignition action, and fed back to single-chip microcomputer 30； Secondly to light flame sensor 4, it is fixed on the No.1 sensor support block 5 on the side of Stirling prototype 1, lights flame sensing The wick of liquid fuel lamp 17 on position is extinguished in the infrared collection head alignment of the front end of device 4, and extinguishing is performed to detect extinguishing means Fuel combustion situation after action, and fed back to single-chip microcomputer 30.Temperature sensor shares three：One is hot cylinder temperature sensor 28, it is fixed at the hot cylinder of Stirling prototype 1, to collect hot cylinder temperature data；Secondly be cooling cylinder temperature sensor 2, Gu It is scheduled at the cooling cylinder of Stirling prototype 1, to collect cooling cylinder temperature data；Thirdly it is fixed on the stand apart from flame farther out On, to collect ambient temperature data.Current sensor is connected among the circuit that generator is power supply, to collect load electricity Flow data.Voltage sensor is connected in parallel on the both ends loaded in generator circuit and collects load voltage data.Magnetometric sensor 31 is solid The rear of engine flywheel is scheduled on, and small magnetic fast 32 is fixed on flywheel rim, Speed of Reaction Wheels data are collected by magnetic force change. Pressure sensor 7 is fixed on the bottom plate 6 of stand, to collect fuel lamp qualitative data.Display screen 19 is fixed on bottom plate 6, It will include after measured data processing on screen.Single-chip microcomputer 30 is fixed on bottom plate upper edge, connects each sensor Part, does data processing and control is used.

As shown in Figures 1 to 5, automatically controlling fuel converting system includes：Igniter, conversion equipment, extinguishing means.Point Fiery device produces high-temperature electric arc mode by controlled higher temperature arc generating device and lighted a fire.Conversion equipment passes through round turntable machine It is dynamic that structure rotation realizes that fuel level puts back into transformation.Extinguishing means passes through the lid fire extinguishing flame realization in a manner of the lifting of cam mechanism driving lid Extinguish.Conversion equipment is fixed on the center position on bottom plate, igniter, extinguishing means and Stirling prototype respectively with Centered on the conversion equipment turntable center of circle, it is placed next to each other at a distance of an angle of 90 degrees around conversion equipment.

Igniter is ignited using controlled higher temperature arc generating device generation high-temperature electric arc and treats that the principle of ignition elements is realized a little Fire action.As shown in Figure 1 and Figure 5, controlled higher temperature arc generating device used in igniter includes battery 9, by single-chip microcomputer Relay 37, transformer 10, electric wire and the electrode 15 of 30 controls.Battery 9 is fixed on battery mounting, and relay 37 is fixed On bottom plate between transformer and battery, transformer 10 is fixed in transformer fixed seat.Electrode 15 is fixed on electrode fixed mount On, positive and negative electrode is each passed through two through holes of motor fixing frame, is suspended in and treats a liquid fuel wick both ends, electrode tip is apart 5 to 10 millimeters.The positive pole of battery 9 is connected by being rectified pole by monolithic processor controlled relay 37 and transformer voltage supply, the negative pole of battery 9 Connected with transformer negative pole.When needing arc ignition, single-chip microcomputer gives relay closure signal, and relay adhesive is whole high Warm arc ignition circuit is switched on, and the voltage that battery 9 provides is input to electric arc and occurred at electrode, then by transformer boost Produce high-temperature electric arc and light liquid fuel lamp 17.The circuit of controlled higher temperature arc generating device is：In the positive pole of battery 9, circuit leads to Cross and rectified pole connection by the relay 37 that single-chip microcomputer 30 controls and the voltage supply of transformer 10, in the negative pole of battery 9 and the voltage supply of transformer 10 Negative pole is held to connect.When igniter starts, single-chip microcomputer 30 sends high level signal to the relay 37 controlled by single-chip microcomputer 30, after The adhesive of electrical equipment 37, connect whole arc generating device circuit.Now, the low-voltage of battery 9 is converted to high-tension electricity by transformer 10 Pressure, exported at the both ends of electrode 15, get high-temperature electric arc, light surrounding air.The now liquid fuel among two electrode 15 Lamp 17 can be ignited.And then complete and light action.Controlled by single-chip microcomputer, the adhesive of relay 37 is about at 0.2 second or so, therefore High-temperature electric arc can continue 0.2 second.After 0.2 second terminates, single-chip microcomputer 30 can send low level signal to relay 37, make relay 37 disconnect, and are then cut off whole arc generating device circuit, stop producing high-temperature electric arc between two electrodes 15, one is lighted Release.Then, single-chip microcomputer 30 sends high level signal to flame sensor 20 is lighted, and makes to light flame sensor 20 and starts Whether work, detection liquid fuel lamp 17 are successfully ignited.If liquid fuel lamp 17 does not have successful ignition, flame sensor is lighted 20 send the electric signal for lighting failure to single-chip microcomputer 30, and single-chip microcomputer 30 will again perform and light action, then restart and light Flame sensor 20 detects whether liquid fuel lamp 17 is successfully ignited, and so moves in circles until liquid fuel lamp 17 is by success Light.If liquid fuel lamp 17 is successfully ignited, lights flame sensor 20 and sent to single-chip microcomputer 30 and light successful electric signal, Single-chip microcomputer 30 will jump out circulation after receiving signal, perform the action of next mechanism.

Conversion equipment realizes the function of fuel shift in position using the motion of round turntable mechanism.As shown in figures 1 and 3, Round turntable mechanism used in conversion equipment include round turntable 16, liquid fuel lamp 17, stepper motor 14, decelerator 13 with And power transmission shaft.Often indexed for one division with 90 degree on round turntable 16 and be provided with a groove, be provided with four grooves, respectively point altogether Fiery location groove 33, heating location groove 34, extinguish location groove 35 and empty indexing trough 36.Liquid fuel lamp 17 shares four, to put Put four different types of liquid fuels.The bottom of liquid fuel lamp 17 can be stuck in circular groove, make the phase of liquid fuel lamp 17 Disk position is fixed.The electrode 15 of igniter two, 1 hot cylinder of Stirling prototype and extinguishing means block 26 are respectively with inverse Hour hands sequencing is arranged in directly over the circular groove of 16 3 adjacent indexing of round turntable and is fixed on bottom plate, is lighting a fire The circular groove of (ignition location) is set to ignition location groove under the electrode of device two, (the heating under the small-sized hot cylinder of Stirling prototype Position) circular groove be set to heating location groove, under extinguishing means block the circular groove of (extinguishing position) be set to extinguish position Groove is put, the circular groove of a remaining indexing does not place any mechanism, is set to sky indexing trough.Because round turntable 16 is to turn Dynamic, therefore four positions can carry out rotation transformation according to order.Turntable lower surface center is provided with the axis hole with keyway, transmission The drive end insertion axis hole of round turntable 16 of axle, the power transmission shaft insertion drive end of decelerator 13, the axle of stepper motor 14 insertion decelerator 13 drive ends.Stepper motor 14 is fixed at motor support, and decelerator 13 is fixed at the support of decelerator 13, round turntable 16 by The decelerator 13 having been fixed in decelerator support is fixed.Round turntable 16 is designed as overlook direction and rotated counterclockwise, often One liquid fuel lamp 17 can all undergo heating location successively from ignition location, extinguish position and empty indexing position.This is to turn One working cycles of platform.Order, from space division degree, is rotated clockwise under the electrode of igniter two to be first, is then rotated again to this Under the special hot cylinder of woods prototype, then rotate under extinguishing means block, finally go back to space division degree.Fire is lighted when single-chip microcomputer 30 receives Flame sensor 20 is lighted successful electric signal and jumped out after circulation, enters the control of conversion device.After lighting successfully, monolithic Machine 30 sends pulse signal to stepper motor 14, to start stepper motor.The moment of torsion that stepper motor 14 exports passes through decelerator 13 Amplification and the transmission of power transmission shaft be finally applied on round turntable 16 so that round turntable 16 starts to rotate.Round turntable 16 An indexing is rotated, i.e., at 90 degree, single-chip microcomputer 30 stops sending pulse signal to stepper motor 14, makes the rotation stop of stepper motor 14 of stopping It is dynamic, and the liquid fuel lamp 17 for making to be ignited in ignition location groove 33 during beginning turns to heating location, to Stirling prototype 1 Hot cylinder is heated.When heat complete when, conversion equipment with same controlled way and type of drive by liquid fuel lamp 17 from Heating location, which is gone to, extinguishes position, is prepared for extinguishing action.

Extinguishing means covers flame using cam mechanism driving block 26, and the principle for making flame anoxic and extinguishing is completed to extinguish Action.As shown in Figure 1 and Figure 4, the cam mechanism that extinguishing means uses is by cam motor 22, shaft coupling 23, camshaft 24, cam Driven member 25, block 26 form, and camshaft 24 is provided with cam.The main shaft of cam motor 22 connects the drive end of shaft coupling 23, shaft coupling The drive section of device 23 connects camshaft 24.Cam follower 25, which is located at directly over camshaft 24, to be in contact with cam, cam driven Part 25 is inserted in the slideway of driven member slideway shelf 27, cam follower 25 is produced upper and lower displacement under actuated by cams.Cam Driven member 25 uses translating flat-bottomed follower, and block 26 is fixed with driven member.When starting to perform extinguishing action, cam motor 22, by driving cam axle to drive cam follower 25 and its connected block 26 to be moved down along slideway.It is convex Wheel driven member and its connected block decline bonnet and flame lid go out on flame, realize that fuel extinguishes function.When liquid fires Material lamp 17 by conversion equipment from heating location be transformed into extinguish position when, single-chip microcomputer 30 is opened by Pulse Width Control cam motor 22 It is dynamic.The moment of torsion of cam motor 22 passes to camshaft 24 by the shaft coupling connected firmly makes its rotation.It is convex that camshaft 24 rotates drive Wheel driven member 25 moves down in driven member slideway shelf 27, is now connected in the block 26 on cam follower 25 also with convex Wheel driven member 25 moves up and down.After liquid fuel lamp 17, which reaches, extinguishes position, cam motor 22 starts cam follower 25 Moved down with block 26, drop to be covered on the flame of fluid fuel lamp 17 and go out.

Fixed rack includes bottom plate 6 and the Stirling prototype stage body 3 being separately fixed on bottom plate 6, igniter are solid Determine frame, conversion equipment fixed mount, extinguishing means frame, sensor support frame.

Stirling prototype stage body 3 is a Height Adjustable level support platform, is realized using the principle of feed screw nut Lifting platform, in order to facilitate experimenter to find optimal height.Stirling prototype stage body planar horizontal is placed, flat Screwed hole is got at four angles of platform, is matched somebody with somebody respectively at leading screw and is combined into screw thread pair.When rotating clockwise leading screw, platform rise；When When rotating counterclockwise leading screw, platform reduces.

Igniter fixed mount includes battery case fixed mount 8, transformer fixed mount 11 and electrode fixed mount 12.Electrode is consolidated Determine to be provided with two electrode holes on frame 12, to fix two electrodes.Electrode fixed mount is fixed on bottom plate, holes height and liquid Fuel lamp is highly consistent.According to electrode, transformer, battery the circuit order of connection, corresponding transformer fixed mount 11 is fixed on electricity The side of pole fixed mount 12, the stationary transformer fixed mount one end of battery case fixed mount 8.

Conversion equipment fixed mount includes motor support, decelerator supports.Stepper motor and decelerator are respectively by motor support Block and decelerator support block raise its height, electrical axis is in approximately the same plane with decelerator axis.

Extinguishing means fixed mount includes motor support block 21, driven member slideway shelf 27, slideway shelf support block 29.Motor support Block 21 is below cam motor, it is therefore an objective to which drive up motor makes its axis be in suitable height.Driven member slideway shelf journey Z-shaped is consolidated Cam one end is scheduled on, its underpart is supported by slideway shelf support block 29, is cooperatively formed sliding pair with driven member, is realized on driven member Lower movement.Cotter way is provided with slideway, driven member has pin-and-hole, prevents driven member in slideway internal rotation.

Sensor support frame is made up of two sensor support blocks 5,18.One side for being located at cam motor, another Positioned at the side of Stirling prototype, two sensor support blocks set in order to which two flame sensor positions are raised.

Stirling-electric hybrid parameter collection process introduced below：

Participating in the sensor of Stirling-electric hybrid parameter collection includes cooling cylinder temperature sensor 2, hot cylinder temperature sensor 28, magnetic force Sensor 31, display screen 19, pressure sensor 7, small magnetic patch 32, current sensor and voltage sensor.Conversion equipment will be by point The liquid fuel lamp 17 that fiery device is lighted is gone to after heating location heats to 1 hot cylinder of Stirling prototype, single-chip microcomputer 30 with Start to export high electricity to cooling cylinder temperature sensor 2, hot cylinder temperature sensor 28, magnetometric sensor 31 and pressure sensor 7 It is flat, start each sensor and be operated.Cooling cylinder temperature sensor 2 measures the exothermic temperature of the cooling cylinder of Stirling prototype 1, hot cylinder temperature Spend sensor 28 and measure the hot cylinder heating temperature of Stirling prototype 1.Small magnetic patch 32 is attached at the flywheel rim of Stirling prototype 1 In gabarit, magnetic field is provided for magnetometric sensor 31.When Stirling prototype 1 is run, small magnetic patch 32 flies with Stirling prototype 1 Wheel is rotated, and a magnetic force pulse can be produced when passing through magnetometric sensor 31 every time, single by interior number of pulses between units of measurement Piece machine 30 can calculate Speed of Reaction Wheels.Pressure sensor 7 is measuring the weight of liquid fuel lamp 17.When on pressure sensor 7 The pressure size of liquid fuel lamp can be produced analog signal and passed to single-chip microcomputer by pressure sensor senses when being placed with liquid fuel lamp 30.Conversion pressure is quality by computing by single-chip microcomputer 30.Current sensor and voltage sensor determine Stirling model respectively The electric current and magnitude of voltage that the small generator that machine 1 is carried is provided, current sensor are connected on the circuit that generator is power supply Among, to collect load current data.Voltage sensor is connected in parallel on the both ends loaded in generator circuit and collects load voltage Data.Display screen 19 is showing the various data measured by each sensor.When cooling cylinder temperature sensor 2, hot cylinder TEMP Device 28, magnetometric sensor 31 and pressure sensor 7 are converted to accordingly to the analog signal that single-chip microcomputer 30 transmits by single-chip microcomputer 30 After the analogue value, single-chip microcomputer 30 exports these information into display screen 19, cooling cylinder temperature that cooling cylinder temperature sensor 2 is measured, The Speed of Reaction Wheels that hot cylinder temperature that hot cylinder temperature sensor 28 measures, magnetometric sensor 31 measure is with measured by, force snesor 7 Current and voltage data and time showing measured by quality, current sensor and voltage sensor are on display screen 19 for experiment Person reads.

Specific experiment part：When experimenter starts experiment, the portion of external power supply should will be needed in the utility model first Tap energization source circuit.As needed that battery 9 is put into battery case fixed mount 8 in igniter, and correctly connect igniter Circuit；Stepper motor 14, extinguishing means convexity turbin generator 22 need to connect driving power in conversion equipment；Single-chip microcomputer 30 needs to connect Energization source.After needing power pack to connect circuit, experimenter can will test the liquid fuel selected in right amount in liquid fuel lamp In 17, the quality sum that initial fuel and empty liquid fuel lamp are measured on pressure sensor 7 is placed on again afterwards.Experimenter can The initial mass information of liquid fuel lamp 17 is read on display screen 19, is recorded.After mass measurement records, liquid is fired Material lamp 17 is placed in the empty indexing trough 36 of round turntable 16, then starts single-chip microcomputer 30 by switching.Single-chip microcomputer 30 controls The ignition location that stepper motor 14 goes to liquid fuel lamp 17 under ignition device electrode 15.Then, single-chip microcomputer 30 will be controlled automatically Igniter processed performs to liquid fuel lamp 17 and lights action.After lighting successfully, single-chip microcomputer 30 automatically controls conversion equipment will The heating location that liquid fuel lamp 17 is gone under the hot cylinder heating point of Stirling prototype 1, adds to 1 hot cylinder of Stirling prototype Heat.Now, cooling cylinder temperature sensor 2, hot cylinder temperature sensor 28, magnetometric sensor 31 have started to collect temperature, rotating speed phase Close data and temperature value, tachometer value are shown on single-chip microcomputer 30.After waiting data to be displayed relatively stable, two temperature are read The value and Current Voltage value of degree and Speed of Reaction Wheels are recorded.Persistently record multi-group data.After recording enough experimental datas, By switch control single chip computer 30 to stepper motor 14 send control signal make stepper motor 14 rotate one indexing, i.e., 90 degree, Liquid fuel lamp 17 is gone to the extinguishing position of the lower section of extinguishing means block 26.Then single-chip microcomputer 30 controls extinguishing means cam electricity Machine 22 rotate make within one week block 26 fall the flame lid of liquid fuel lamp 17 is gone out after return to extreme higher position.After extinguishing successfully, monolithic Machine 30 controls conversion equipment stepper motor 14 that the liquid fuel lamp 17 extinguished is gone into sky indexing position.Then, liquid is fired Material lamp 17 is removed from round turntable 16, liquid fuel lamp 17 is placed on pressure sensor 7 after measuring and being heated The quality sum of fuel and empty liquid fuel lamp, reading quality information and recorded on display screen 19.

Analysis of experimental data：The data measured in specific experiment have the mass of liquid fuel lamp 17, Stirling mould before experiment Liquid fuel after the hot cylinder temperature of type machine 1, the cooling cylinder temperature of Stirling prototype 1, Speed of Reaction Wheels, dynamo current magnitude of voltage, experiment The mass of lamp 17 and time difference.It can be drawn and disappeared with the mass of liquid fuel lamp 17 after experiment by the mass of liquid fuel lamp 17 before testing The fuel mass of consumption, according to fuel value and then the heat of fuel combustion heat supply can be obtained.By the hot cylinder temperature of Stirling prototype 1 Degree, the cooling cylinder temperature of Stirling prototype 1 can be used for the rule for studying hot cylinder temperature and cooling cylinder temperature change, can also calculate this The theoretical efficiency of heating.The power output of Stirling prototype 1 can be calculated with the time difference by dynamo current magnitude of voltage, is tied The actual efficiency of Stirling prototype 1 can be drawn by closing the heat of fuel combustion heat supply.Speed of Reaction Wheels can add to study difference The variation relation of Speed of Reaction Wheels at hot temperature.

Embodiment above is an example of the present utility model, is not limited to the spiritual and former of this creation Any modification, equivalent substitution and improvements done within then etc., it all should be included within the protection domain of this creation.

Claims (7)

1. one kind miniaturization Stirling engine teaching experiment test platform, including Stirling prototype, it is characterised in that also wrap Include data collection process and control system, automatically control fuel converting system and fixed rack；The data collection process and Control system is made up of single-chip microcomputer, sensor and controller, to complete data collection process and automatically control fuel conversion The control of system；The fuel converting system that automatically controls is fixed on fixed rack, and it is by data collection process and control The control of system, to complete fuel conversion；Automatically controlling fuel converting system includes igniter, conversion equipment, extinguishing means, Conversion equipment is fixed on the bottom plate of fixed rack, and conversion equipment includes round turntable mechanism, igniter, extinguishing means and Stirling prototype is placed next to each other in around round turntable successively centered on the round turntable center of circle of round turntable mechanism respectively.

2. a kind of miniaturization Stirling engine teaching experiment test platform as claimed in claim 1, it is characterised in that described Round turntable mechanism also includes liquid fuel lamp, stepper motor and decelerator；Stepper motor and decelerator drive end axis connection, Decelerator drive end can be rotated counterclockwise with round turntable by being driven axis connection, round turntable under driving stepper motor；Circle With 90 degree for one division on shape turntable, often indexing is provided with a groove, and four liquid fuel lamps are individually positioned in round turntable In four grooves；The electrode of igniter two, the hot cylinder of Stirling prototype, extinguishing means block are arranged in sequence counter-clockwise respectively Directly over the circular groove of three adjacent indexing of round turntable and it is fixed on bottom plate, a remaining empty indexing position.

3. a kind of miniaturization Stirling engine teaching experiment test platform as claimed in claim 2, it is characterised in that described Igniter also includes battery, by monolithic processor controlled relay and transformer；Anode passes through relay and transformer Voltage supply is rectified pole and connected, and GND is connected with transformer voltage supply end negative pole；Suspended electrode is treating a liquid fuel wick both ends.

4. a kind of miniaturization Stirling engine teaching experiment test platform as claimed in claim 2, it is characterised in that described Extinguishing means also includes cam motor, shaft coupling, camshaft, cam follower, and cam motor main shaft connects shaft coupling drive end, Shaft coupling drive section connects camshaft, and cam follower is located at directly over camshaft and bottom can be produced under actuated by cams Move, be connected block on cam follower.

5. a kind of miniaturization Stirling engine teaching experiment test platform as claimed in claim 1, it is characterised in that described The sensor of data collection process and control system includes flame sensor, temperature sensor, current sensor, voltage sensor Device, magnetometric sensor, pressure sensor and single-chip microcomputer；Flame sensor includes knock down the flame sensor and lights flame sensing Device, knock down the flame sensor light flame biography to detect the fuel combustion situation after igniter performs arc ignition action Sensor performs the fuel combustion situation after extinguishing acts to detect extinguishing means；Temperature sensor is included to collect Stirling The hot cylinder temperature sensor of the hot cylinder temperature data of prototype, collecting the cooling cylinder temperature of Stirling prototype cooling cylinder temperature data Sensor and to collect the environment temperature sensor of ambient temperature data；It is power supply that current sensor, which is connected on generator, Circuit among, to collect load current data；It is negative that voltage sensor is connected in parallel on the both ends collection loaded in generator circuit Carry voltage data；Magnetometric sensor is fixed on the rear of engine flywheel, and is fixed with demagnetic stack in flywheel rim, collects flywheel Rotary speed data；Pressure sensor is fixed on the bottom plate of fixed rack；Single-chip microcomputer electrically connects with above-mentioned each sensor element.

6. a kind of miniaturization Stirling engine teaching experiment test platform as claimed in claim 5, it is characterised in that described Data collection process and control system also include display screen, and display screen is fixed on fixed rack, with monolithic mechatronics.

7. a kind of miniaturization Stirling engine teaching experiment test platform as claimed in claim 1, it is characterised in that described Stirling prototype stage body, igniter fixed mount, the conversion equipment that fixed rack also includes being separately fixed on bottom plate are fixed Frame, extinguishing means frame, sensor support frame；The Stirling prototype stage body is Height Adjustable level support platform.