SU958828A1

SU958828A1 - Heat exchanger

Info

Publication number: SU958828A1
Application number: SU803236258A
Authority: SU
Inventors: Владислав Алексеевич Кабликов; Григорий Исаакович Двоскин; Анатолий Иванович Курочкин; Генрих Львович Столяр; Тамара Николаевна Мухина; Олег Берович Иоффе; Николай Иванович Бабенко
Original assignee: Государственный Научно-Исследовательский Энергетический Институт Им.Г.М.Кржижановского
Priority date: 1980-12-05
Filing date: 1980-12-05
Publication date: 1982-09-15

Description

1one

Изобретение относитс к теплотехнике и может быть использовано в энергетической и химической промышленности.The invention relates to heat engineering and can be used in the energy and chemical industries.

Известен теплообменник, содержащий корпус, частично заполненный жидким теплоносителем , с крышкой, на которой закреп лено вертикальное газовое сопло, подключенное к источнику сжатого газа, и теплообменные поверхности 1.A heat exchanger is known, comprising a housing partially filled with a heat-transfer fluid, with a lid on which a vertical gas nozzle connected to a source of compressed gas and heat exchanging surfaces 1 is fixed.

Недостатком данного теплообменника вл етс наличие нерегулируемой поверхности теплообмена, что при снижении тепловой нагрузки приводит к снижению температуры теплоносител и уменьшению надежности работы теплообменника в целом.The disadvantage of this heat exchanger is the presence of an unregulated heat exchange surface, which, with a decrease in heat load, leads to a decrease in the temperature of the coolant and a decrease in the reliability of the heat exchanger as a whole.

Цель изобретени - повышение надежности работы.The purpose of the invention is to increase the reliability of work.

Поставленна цель достигаетс тем, что в корпусе расположена обечайка, образуюш ,а с его стенками открытую сверху камеру , в которой размешены теплообменные поверхности, причем камера заполнена промежуточным теплоносителем и состоит из секций, кажда из которых подключена к автономному источнику промежуточного теплоносител . Кроме того, автономный источник промежуточного теплоносител The goal is achieved by the fact that a shell is located in the housing, which forms an open-top chamber with its walls, in which heat exchange surfaces are placed, the chamber filled with an intermediate heat carrier and consisting of sections, each of which is connected to an independent source of intermediate heat carrier. In addition, an autonomous source of intermediate coolant

выполнен в виде емкости, подключенной к источнику сжатого газа..made in the form of a tank connected to a source of compressed gas ..

На фиг. 1 схематично изображен теплообменник; на фиг. 2 - то же, поперечное сечение.FIG. 1 schematically shows a heat exchanger; in fig. 2 is the same cross section.

5 Теплообменник содержит корпус 1, крышку 2, на которой закреплено вертикальное газовое сопло 3, теплообменные поверхности 4 и обечайку 5, образующую с корпусом 1 открытую сверху камеру 6, в кото ,Q рой размешены теплообменные поверхности 4, причем камера заполнена ьромежуточным теплоносителем. Камера 6 может состо ть из секций 7, кажда из которых подключена к автономному источнику 8 промежуточного теплоносител . Автономный источник 85 The heat exchanger includes a housing 1, a lid 2 on which a vertical gas nozzle 3 is fixed, heat exchanging surfaces 4 and a shell 5, which forms with the housing 1 an open chamber 6 at the top, in which, Q swarm has heat exchange surfaces 4, and the chamber is filled with an intermediate heat carrier. Chamber 6 may consist of sections 7, each of which is connected to an autonomous source 8 of an intermediate heat transfer medium. Autonomous source 8

15 промежуточного теплоносител может быть выполнен в виде емкости 9, подключенной к источнику сжатого газа. Емкость 9 подключена к тому же источнику сжатого газа, что и газовое сопло 3.15 intermediate heat carrier can be made in the form of a tank 9 connected to a source of compressed gas. The container 9 is connected to the same source of compressed gas as the gas nozzle 3.

20 Теплообменник работает следующим образом .20 The heat exchanger operates as follows.

Claims

Gas is supplied through nozzle 3 to the surface of the heat transfer fluid. Due to the dynamic effect of gas, a hydrodynamic well is formed on the surface of the coolant, in which the heat exchange process takes place between the gas and the liquid. Heat from the gas when the gas is more heated than the coolant is transferred into the volume of the coolant and further to the heat exchange surfaces. At the same time, the temperature of the coolant and the gas at the exit of the heat exchanger depends on the change in the heat load of the heat exchanger. That in most cases is unacceptable for technological reasons. Installing the tetl-exchange surfaces 4 in the chamber 6 filled with a liquid with high thermal conductivity allows you to adjust the heat exchange surface, and thus maintain these temperatures at a given level, since the main heat flux is transmitted only in that part of the heat-exchange surfaces 4 that are immersed in the liquid. The adjustment effect is greater, the greater the difference in the thermal conductivity of gas and liquid filling chamber 6. The change in the level of liquid in chamber b is made by supplying compressed gas to tank 9, which displaces some of the liquid from tank 9 to chamber 6 for automatic maintaining the temperature of the coolant and the gas, the nozzle cavity can be connected to the tank 9. The higher the gas flow through the nozzle 3, the higher the heat load of the heat exchanger and the pressure in the cavity of the nozzle 3. This pressure is transferred to the tank 9 and part of the fluid Pressurized into chamber 6. At the same time, the surface of the heat exchanger increases, which entails an increase in heat flux to the surfaces 4. Since the thermal resistance during heat transfer from the coolant to the heat exchange surfaces decreases as the load on the nozzle 3 increases, the coolant temperature and output gas remain constant. To increase the uniformity of heat removal around the perimeter of the heat exchanger, the chamber 6 is made in separate sections 7, each of which is connected to an autonomous source 8. Changing the liquid level in sections 7 of chamber 6 changes the distribution of heat removal around the perimeter of the heat exchanger. The proposed device contributes to the regulation of the surface of the heat exchanger and increases the reliability of the heat exchanger. Claim 1. Heat exchanger comprising a body partially filled with a heat-transfer fluid with a lid on which a vertical gas nozzle connected to a source of compressed gas is fixed, and heat exchange surfaces characterized in that, in order to increase reliability of operation, a shell is located in the body the chamber which forms with its walls, is open at the top, in which the heat exchange surfaces are placed, the chamber being filled with an intermediate heat carrier.

2. A heat exchanger according to claim 1, characterized in that the chamber consists of sections, each of which is connected to an autonomous source of intermediate heat carrier.

3. Heat exchanger according to claim 2, characterized in that the autonomous source of intermediate heat transfer fluid is made in the form of a tank connected to a source of compressed gas. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 742691, cl. F 28 C 3/06, 1978.