CN2593117Y - Thermoacoustic engine heater - Google Patents

Abstract

The utility model discloses a thermoacoustics engine heater, which is provided with a rigid pipe of which both ends are provided with a connecting part, a plurality of mutually parallel cuboid blocks of which the middle parts are provided with heat source channels penetrate the rigid pipe transversally, and the periphery of the end part of each cuboid block is fixedly sealed to the wall surface of the rigid pipe, and the spacing parts of the cuboid blocks in the rigid pipe are longitudinally provided with fluid channels. The thermoacoustics effect is a mutual conversion phenomenon between heat and sound. A thermoacoustics engine is a device to realize the conversion of heat energy and sound energy by the thermoacoustics effect. According to energy conversion directions, the thermoacoustics engine can be divided into a thermoacoustics engine or a thermoacoustics refrigerator; according to sound field characteristics, the thermoacoustics engine can be divided into a standing wave type, a travelling wave type or a standing wave and travelling wave mixed type. The thermoacoustics engine heater does not need external mechanical means and can build the suitable phase relationship between the speed of oscillating fluid and pressure; no moving component is in the system, besides oscillating gas; especially a sliding seal component is eliminated, and thus the utility model has the advantages of simple structure and long service life.

Description

The thermoacoustic engine heater

Technical field

The utility model relates to a kind of thermoacoustic engine heater, and this heater can be used for the heating of interior motion of pipeline and non-moving fluid.

Background technology

Thermoacoustic engine utilizes thermoacoustic effect that thermal power transfer is the sound merit, and the heat of input is provided by heater, so heater is one of core component of thermoacoustic engine, plays a part very important in thermoacoustic engine.Theoretical along with heat sound and test further extension, thermoacoustic engine are towards high-power, high efficiency target development, and the efficient, the heating power that how to improve heater have become one of thermoacoustic engine exploitation urgent problem.Mode of heating commonly used at present has: gas fuel combustion heating, electrothermal tube heating, ribbon heater heating, solar energy heating, Steam Heating, eddy-current heating, carborunbum tube heating etc., no matter but select which kind of mode of heating, all need to design a kind of compactness, heat exchanger efficiently.We are applicable to electrothermal tube mode of heating, gas fuel combustion mode of heating, Steam Heating mode, induction heating mode, carborunbum tube mode of heating etc. by the thermoacoustic engine heater of design.When between the different heating mode, switching, only need the working media or the mode of thermal source one side are done some suitable adjustment.

Summary of the invention

The purpose of this utility model provides a kind of thermoacoustic engine heater.

It has rigid pipe, rigid pipe two ends and is provided with and laterally runs through cuboid piece, its end periphery and the rigid pipe wall fixing seal, the place, the inherent cuboid of rigid pipe block gap that are provided with a plurality of centres that are parallel to each other and have the thermal source passage on attaching parts, the rigid pipe and vertically be provided with the fluid passage.

Thermoacoustic effect is the phenomenon of changing mutually between heat and the sound, i.e. time equal thermomechanical effect between working fluid in the sound field and the solid dielectric.Thermoacoustic engine is a kind of device of realizing heat energy and acoustic energy conversion by thermoacoustic effect.Can be divided into according to the power conversion direction: thermoacoustic engine (also claiming thermoacoustic compressor), hot sound refrigerating machine; Can be divided into according to sound field characteristic: standing wave type, travelling-wave type, the capable ripple mixed type of standing wave.Thermoacoustic engine does not need outside mechanical means just can make between the speed of oscillating fluid and the pressure to set up suitable phase relation, in the system except that oscillating gas, do not have moving component, particularly eliminated sliding sealing part, therefore simple in structure and service life is long.

The core component of thermoacoustic engine is: cooler, thermal acoustic regenerator, heater.Cooler and heater are in the regenerator two ends respectively, because their cooling and heating, bigger thermograde of axial formation at thermal acoustic regenerator, this gradient is the driving force of thermoacoustic engine work, and reaching the critical value thermoacoustic engine when the axial-temperature gradient of regenerator is spontaneous oscillation.Cooler is stabilized in environment temperature to the cold junction temperature of regenerator, so the size of regenerator axial-temperature gradient just depends primarily on the heating power that heater provides.More than analyze the operate as normal that explanation will realize thermoacoustic engine, following condition is indispensable: working fluid, solid dielectric, thermograde.Because the heater in the thermoacoustic engine is in the high pressure hyperbaric environment, and can be limited for the space of heating, so sealing and heat transfer problem are particularly outstanding.Advantage of the present invention is: slot on rigid pipe, insertion has the cuboid piece of thermal source passage, the contacted periphery in cuboid piece end and rigid pipe surface is guided in sealing, solve with welding or bonding method then, electrothermal tube can mount and dismount very easily and not influence other parts of heater simultaneously, and therefore a kind of new approaches of effective solution HTHP sealing problem are provided; Fluid passage and thermal source passage are evenly distributed, and fluid is evenly heated, and in the confined space, can evenly provide bigger heating power for fluid.

Description of drawings

Fig. 1 is a thermoacoustic engine heater example overall pattern;

Fig. 2 is the sectional view of the heater fluid passage of charged heat pipe.

The specific embodiment

The thermoacoustic engine heater has rigid pipe 2, rigid pipe two ends and is provided with and laterally runs through cuboid piece 3, its end periphery and the rigid pipe wall fixing seal, the inherent cuboid piece of rigid pipe 3 intervals that are provided with a plurality of centres that are parallel to each other and have the thermal source passage on attaching parts 5, the rigid pipe and vertically be provided with fluid passage 1.The effect of fluid passage is for fluid provides path, simultaneously heat is passed to fluid.The final goal of design and making heater is that working fluid is heated to desired temperature at the heater place, so guiding theory of the present invention is efficiently, equably fluid is heated.The material of fluid passage does not have strict restriction, preferably has bigger thermal conductivity factor and can anti-higher temperature, but can consider to add non-conductors such as one deck pottery or asbestos when Insulation Problems exists.The fluid passage can directly cut out on material with wire cutting method, also can utilize the gap between the plate to make.The effect of rigid pipe is a seals high pressure gas, big passage is provided and realizes connection between the pipeline, provides rigid support for the fluid passage simultaneously.The cuboid piece that has the thermal source passage is used for by solid heating plants such as high temperature fluid or placement electrothermal tubes, and its receives and transmits to the fluid passage from the heat of high temperature heat source and these heats, is a heat exchanger components therefore.Thermal source passage material is not strict with, preferably has bigger thermal conductivity factor and can anti-higher temperature, but when Insulation Problems occurs, can consider to add from the teeth outwards materials such as one deck pottery, asbestos, its another one important function be by and rigid pipe between the welding or bonding realization elevated-temperature seal.Thermal source is the carrier of heat of high temperature, is the heat supply parts.The kind of thermal source depends on the selection of mode of heating, and the present invention is applicable to electrothermal tube mode of heating, gaseous fuel mode of heating, steam or hot water mode of heating, induction heating mode, carborunbum tube mode of heating.Therefore thermal source can be electrothermal tube, high-temperature flue gas, high-temperature steam, hot water, induction installation, carborunbum tube etc.The effect of attaching parts is to realize being connected of heater and other conduit component.

The fluid passage of exemplary heater is by (φ 100 * 100mm) reaches the standard grade and cuts out 36 rectangular channels and make, and it also can select other material such as stainless steel etc. for use at the brass cylinder.Rigid pipe is made with high temperature resistant stainless steel, and internal diameter is 100mm, and it both can use ready-made stainless steel tube, also can directly process with stainless steel bars; The cuboid piece is of a size of 96 * 12 * 120mm, directly cuts out on stainless steel materials with wire cutting method; Need to prove, adopt the method that directly on stainless steel bars, cuts out fluid passage and thermal source passage can make making easier, just no longer include independent rigid pipe, fluid passage like this in the heater and have the cuboid piece of thermal source passage, but the three is closed as a whole.Thermal source is the nickel filament electrothermal tube of using always, in order to reduce the thermal contact resistance of it and thermal source passage, and electrothermal tube tightness slightly in inserting passage the time, this exemplary heater has designed 24 electrothermal tubes altogether.After carrying out above-mentioned individual components, the fluid passage with immersing in liquid nitrogen after cold being set in the rigid pipe, hang down as for the fluid axial passage and between the fluid passage, cut out three grooves that connect rigidity tube walls and fluid passage, be of a size of 96 * 12mm, the cuboid piece with immersing in liquid nitrogen after cold packing in the slot, outside argon arc welded seal, on cuboid tile height direction, cut out the thermal source passage then, have 3 cuboid pieces in the exemplary heater, have 8 thermal source passages on each cuboid piece, at last electrothermal tube is inserted in the passage.

The material of said fluid passage, rigid pipe, cuboid piece can be stainless steel, red copper, brass, alloy, pottery or asbestos; Thermal source is high-temperature steam, hot water, high-temperature flue gas, electrothermal tube, carborunbum tube and induction heater; The form of attaching parts is flange connection, welding, integral production.

Use bolt heater other parts close-coupled during use, will realize excellent sealing between flange with thermoacoustic engine.Because heater is in the condition of high temperature, so the sealing of it and other parts generally will be adopted metal or other alloy pad.After the thermoacoustic engine assembling is finished, system is vacuumized to guarantee that the inside does not have exist (the removing oxidizing gas) of air, the vacuum of system charges into high-pressure working gas after reaching requirement, then electrothermal tube is switched on, and heater enters duty.After heater continuous operation a period of time, the regenerator hot-side temperature constantly raises, and the axial-temperature gradient of regenerator reaches system's starting of oscillation after the critical value.If system is quit work, only need to cut off the power supply of electrothermal tube.When this exemplary heater was used for non-thermoacoustic engine occasion separately, occupation mode was identical.

Claims (6)

1. thermoacoustic engine heater is characterized in that: have rigid pipe (2), rigid pipe two ends and be provided with and laterally run through cuboid piece (3), its end periphery and the rigid pipe wall fixing seal, the inherent cuboid piece (3) of the rigid pipe interval that are provided with a plurality of centres that are parallel to each other and have the thermal source passage on attaching parts (5), the rigid pipe and vertically be provided with fluid passage (1).

2. a kind of thermoacoustic engine heater according to claim 1 is characterized in that: the material of said fluid passage is stainless steel, red copper, brass, alloy, pottery or asbestos, being shaped as circle, rectangle, the rectangle of fillet is arranged of its runner.

3. a kind of thermoacoustic engine heater according to claim 1 is characterized in that: the material of said rigid pipe is stainless steel, red copper, brass, alloy, pottery; The profile of rigid pipe is cuboid, cylinder, elbow.

4. a kind of thermoacoustic engine heater according to claim 1 is characterized in that: the material of said cuboid piece is stainless steel, red copper, brass, alloy, pottery or asbestos; The thermal source passage be shaped as circle, rectangle, the rectangle that fillet is arranged, fin.

5. a kind of thermoacoustic engine heater according to claim 1 is characterized in that: said thermal source is high-temperature steam, hot water, high-temperature flue gas, electrothermal tube, carborunbum tube and induction heater.

6. a kind of thermoacoustic engine heater according to claim 1 is characterized in that: the form of said attaching parts is flange connection, welding, integral production.