DE3508741A1 - Storage container for pressurised hot media - Google Patents

Abstract

A storage container whose storage wall bears an inner insulation on its inside is provided for a pressurised hot medium. In order to protect the storage wall from overheating even at high pressure and high temperature of the medium to be stored, a dual-walled covering is used as inner insulation, whose gap is filled with insulation material and with a gas whose pressure corresponds to the pressure of the medium to be stored.

Description

3503741

Kernforschumjüanlaye Jülich Hal tuny limited company

Official File number: P 34 09 222.6-16

Storage tank for hot media under overpressure

The invention relates to a storage container for a hot medium, which under Overpressure, i.e. under a pressure above atmospheric pressure. The storage container has a equipped with an inner insulation storage space for the hot medium, which has at least a storage line can be introduced and executed in the storage space. The inner insulation is arranged on the inside of the storage walls.

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Storage containers of this type are known, see DD-PS 148 252. They consist, for example, of cast iron blocks or cast steel and are used to store hot water or hot oil provided. 'To brace the

It is known blocks, tension cables in the axial direction and in the circumferential direction of the cylindrical insert shaped memory. These tensioning cables may be specified for reasons of strength Do not exceed the upper temperature limits. The memory is therefore on the inside the storage walls are provided with internal insulation. In addition to low thermal conductivity, the Inner insulation also have material properties that match the medium to be stored are compatible. They also have to withstand the pressure of the media, so that they can contribute PT 1.722 design of the inner insulation

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COPY ORlGfNAL INSPECTED

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make speaking requirements.

The object of the invention is to provide a storage container for hot media under overpressure, its storage wall even at high pressure in the storage tank and at high temperature of the medium to be stored can be adequately protected from overheating is.

This object of the invention is achieved with a storage container of the type mentioned at the beginning solved by the specified in claim 1 training. The insulation material is used in the space of a double-walled shell and the space with a filled with compressed gas, the pressure of which is adjusted to the pressure of the medium to be stored is. The gas in the space also penetrates into the cavity of the insulation material.

The outer part of the double-walled shell is supported on the inside of the storage wall, the inner part encloses the storage space. Because the gas pressure in the space is equal to the pressure is adjusted in the storage space, the envelope remains stress-free.

The gas in the space between the envelope has a low thermal conductivity and ensures so for a low heat transfer and thus for low heat losses. Come as gases

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3503741

e.g. air or nitrogen. To in the space and in the cavity of the insulation To prevent a convective gas flow, convection barriers are built in, claim 2.

In the following the invention is shown schematically with reference to one in the drawing Embodiment explained in more detail.

The drawing shows a storage container with a storage space 1, which is made of cast iron or blocks 2 made of cast steel to form a cylindrical container with a length L of 60 mm and a diameter D of 7 m with bottom 3 and cover 4 is assembled. Blocks 2, base 3 and cover 4, which form the storage walls of the storage space, are fitted into one another and tensioned by tension cables 5, of which tension cables 5a the blocks 2 in the direction their geometric axis 6, tensioning cable 5b prestress the blocks in the circumferential direction under pressure, The tension cables 5b are in the drawing by dashed lines on the outside of the Blocks 2 indicated schematically.

On the inside of the storage walls there is a double-walled shell as internal insulation made of sheet steel, which encloses the storage space 1 in a gas-tight manner. In the space between the double

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3503741

walled sheath 7 is used insulation material 8, in the embodiment is ceramic Insulation material used, for example ceramic fiber materials or fillers made of ceramic. Glass fiber mats, for example, are also suitable as insulation material.

A gas pressure line 9, which is provided with a pressure regulator, leads to the space between the casing 7 communicates and introduces compressed gas into the space. In the space Convection barriers 11 are attached, which allow a convective flow of the gas in the space and associated heat loss prevent the storage space. The medium to be stored flows into the storage space 1 of the storage container on and off via a lockable storage line.

As poorly heat-conducting gases are for filling the envelope 7 suitable for example air or nitrogen. In the exemplary embodiment, there is air used.

The storage tank was filled with water having a pressure of 60 bar and a temperature of 280 ⁰ C. The gas in the space between the envelope 7 was also regulated to the water pressure of 60 bar. A pressure change in storage space 1 is also followed by the gas pressure in the space between the envelope via the pressure regulator.

Is in the storage tank of oil at a

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Pressure of 60 bar and a temperature of 450 ^° C. are stored, the temperature in the storage walls is kept ^{below 130 ° C. even at this temperature in the storage space 1.}

In the exemplary embodiment, cast iron or cast steel is used to form the storage walls. Instead of cast-iron storage tanks or storage tanks made of cast steel, there are also storage tanks made of other materials, for example storage tanks made of concrete or prestressed concrete with covers of the type according to the invention can be equipped. Such materials can also be found to be undesirable Protect overheating by attaching the covers.

Claims (2)

3? C - 741 grain research facility Julieh limited liability company Amt1. File number: P 34 09 222.6-1b.) T claims 1. Storage container for a pressurized one hot medium with a closed spoichcrrauiu, into which at least one storage line carrying the medium opens and its storage walls are equipped with internal insulation on their inside, characterized in that the inner insulation is a double-walled, a gap having the shell (7) is formed, wherein the gap with a Insulation material (8) is filled and in the intermediate space via one in the intermediate space opening gas pressure line (9) is compressible to the pressure of the medium to be stored Gas can be introduced. 2. Heat storage device according to claim 1, characterized in that that the space between the envelope (7) has convection barriers (11) for the gas. COPY