RU2046977C1

RU2046977C1 - Heating unit for stirling engine

Info

Publication number: RU2046977C1
Authority: RU
Inventors: Р.И. Чембарисов
Priority date: 1992-07-22
Filing date: 1992-07-22
Publication date: 1995-10-27

Abstract

FIELD: engine engineering. SUBSTANCE: heating unit is made up as a set of thin-walled pipes. One ends of the pipes are coupled with the head of cylinder 1. The other ends are coupled with regenerator 2 and combined at the top part of the heater with ring manifold 4. The pipes of the heater and ring manifold are mounted around the cylinder. The set of the pipes mounted around the cylinder and connecting the regenerator with the ring collector is enclosed by ring manifold 5 which is defined by casing 6. Gas-air mixture is fed to the manifold through injector 7. Perforated cylinder 9 is positioned from the inner side of the pipe set at the outlet of the air-gas mixture. Spaces between the regenerator pipes allow the flow of the air-gas mixture to exceed the rate of flame propagation. The spaces between the cylinder pipes and perforation permit the flow of air-gas mixture to be less than the flame propagating rate. The distance between the regenerator pipes and perforated cylinder is 1-3 mm over the radius. EFFECT: enhanced efficiency. 1 dwg

Description

Изобретение относится к теплоэнергетике, в частности к двигателям Стирлинга (ДС). The invention relates to a power system, in particular to Stirling engines (DS).

Известно нагревательное устройство (НУ) для ДС, выполненное в виде ряда тонкостенных трубок, одним концом соединенных с головкой цилиндра, а другим с регенератором и объединенных в верхней части нагревателя кольцевым сборником, трубки нагревателя и сборник собраны вокруг цилиндра. Known heating device (NU) for DS, made in the form of a series of thin-walled tubes, one end connected to the cylinder head, and the other to the regenerator and combined in the upper part of the heater with an annular collector, heater tubes and the collector are assembled around the cylinder.

Тепло к рабочему телу, находящемуся в рабочем контуре и циркулирующему по нагревательным трубкам подводится газообразным или жидким теплоносителем, обтекающим трубки снаружи, т.е. конвективно, что не эффективно. Вместе с тем конструкция НУ сложная. Heat to the working fluid located in the working circuit and circulating through the heating pipes is supplied by a gaseous or liquid coolant flowing around the pipes from the outside, i.e. convectively, which is not effective. However, the design of the NU is complex.

В предлагаемом нагревательном устройстве ДС ряд трубок, собранный вокруг цилиндра и соединяющий регенератор с кольцевым сборником, охвачен кольцевым коллектором, образованным кожухом, замкнутым на кольцевой сборник и цилиндр, к коллектору через инжектор подводится газовоздушная смесь (ГВС), а с внутренней стороны ряда трубок, на выходе ГВС, расположен перфорированный цилиндр, внутри которого опускаются трубки, соединяющие кольцевой сборник с головкой цилиндра, при этом зазоры между "регенераторными" трубками выполнены из условия превышения скорости истечения ГВС над скоростью распространения пламени, а зазоры между "цилиндровыми" трубками и размеры перфорации наоборот, а расстояние между "регенераторными" трубками и перфорированным цилиндром составляет по радиусу 1-3 мм. In the proposed heating device DS, a series of tubes assembled around the cylinder and connecting the regenerator to the annular collector is covered by an annular collector formed by a casing closed to the annular collector and the cylinder, a gas-air mixture (DHW) is supplied through the injector, and from the inside of the row of tubes, at the outlet of the hot water supply, a perforated cylinder is located, inside of which tubes connecting the annular collector with the cylinder head are lowered, while the gaps between the "regenerative" tubes are made from the condition eniya expiration DHW velocity over the flame propagation speed, and the gaps between the "cylinder" tubes and perforation dimensions vice versa, and the distance between the "regenerator" tubes and perforated cylinder is 1-3 mm in radius.

На чертеже изображено схематически предлагаемое нагревательное устройство. The drawing shows a schematically proposed heating device.

На чертеже показаны цилиндр 1, регенератор 2, "регенераторные" трубки 3, кольцевой сборник 4, кольцевой коллектор 5, кожух 6, инжектор 7, ГВС 8, перфорированный цилиндр 9 и "цилиндровые" трубки 10. The drawing shows a cylinder 1, a regenerator 2, "regenerative" tubes 3, an annular collector 4, an annular collector 5, a casing 6, an injector 7, dhw 8, a perforated cylinder 9 and "cylinder" tubes 10.

При зажигании газовоздушной смеси пламя, раскаляя "цилиндровый" ряд трубок и перфорированный цилиндр, проходит к "регенеративным" трубкам, в зазорах между которыми и продолжает находиться, образовывая полосы микрофакелов высотой 1-3 мм, поскольку скорость истечения ГВС через зазоры выше скорости распространения пламени, тем самым накаляя "регенераторные" трубки и перфорированный цилиндр, излучающий энергию на трубчатый нагреватель. Процесс подвода энергии таким образом состоит из конвекции и радиации, что значительно эффективнее. В то же время конструкция предлагаемого НУ проще, чем у известного устройства. When a gas-air mixture is ignited, the flame, heating the "cylinder" row of tubes and the perforated cylinder, passes to the "regenerative" tubes, in the gaps between which it continues to be, forming microwire strips 1-3 mm high, since the speed of the dhw through the gaps is higher than the flame propagation velocity thereby heating the "regenerative" tubes and the perforated cylinder radiating energy to the tubular heater. The energy supply process in this way consists of convection and radiation, which is much more efficient. At the same time, the design of the proposed NU is simpler than that of the known device.

Claims

STIRLING ENGINE HEATING DEVICE, made in the form of a series of thin-walled tubes, one end connected to the cylinder head, and the other
with a regenerator and an annular collector integrated in the upper part of the heater, the heater tubes and the annular collector being assembled around the cylinder, characterized in that the row of tubes assembled around the cylinder and connecting the regenerator with the annular collector is covered by an annular collector formed by a casing closed to the annular collector and a cylinder, an injector for supplying a gas-air mixture is connected to the manifold, a perforated cylinder is placed at the outlet of the gas-air mixture from the inside of a number of tubes, into which tubes connecting the annular collector with the cylinder head, while the gaps between the "regenerator" tubes are made from the condition that the air-gas mixture exceeds the velocity of flame propagation, the gaps between the "cylinder" tubes and the perforation size are vice versa, and the distance between the "regenerator" tubes and the perforated the radius of the cylinder is 1 3 mm.