CZ201585A3 - Module section of inversed steam generator for nuclear energy facilities - Google Patents

Abstract

The section of the reverse steam generator modules for nuclear power plants is comprised of modules with an inlet chamber (2) of a heat carrier, a superheater section (3), an evaporator section (4), an economizer section (5) and a heat transfer chamber and outlet chamber (6) a heat carrier, a heat carrier collector (8) and a heat carrier outlet conduit (9) and a steam conduit (10), a steam collector (11), a feed water line (12) and a feed water collector (1). The section consists of vertically oriented modules, the superheater section (3) and the economizer section (5) having a linear longitudinal axis which is not perpendicular to the earth surface, with a single heat collector (8) having a longitudinal axis situated horizontally at one side of the sections (3). ) superheaters, with a single steam collector (11) having a longitudinal axis situated horizontally at the second side of the superheater sections (3) and with one feed water collector (1) with a longitudinal axis situated horizontally at the outlet ports (6) of the heat carrier.

Description

A section of reverse steam generator modules for nuclear power plants

Technical field

BACKGROUND OF THE INVENTION The present invention relates to an embodiment and arrangement of a reverse steam generator module section for a fast reactor nuclear power plant.

BACKGROUND OF THE INVENTION [0002] Embodiments of an inverted steam generator module section are currently known, in which the modules are assembled from structurally separate superheater elements, remover cells, and economizer cells, and on the other hand, the cells have a longitudinal axis in the form of a planar curve located in a plane oriented perpendicularly. to the earth's surface. Each cell is formed by an inlet and outlet chamber of a heat carrier, followed by an inlet and outlet, respectively.

In tube sheets, which are connected to the tube bundle on the side of the heat carrier. Thus, each cell has two tube sheets and a tube bundle connected thereto. In these known embodiments of the module section of the inverted steam generator, the heat carrier collector is positioned such that its longitudinal axis is at the level of the inlet chambers of the superheater cell carrier.

The longitudinal axis of the steam collector is, in the known embodiment, situated above the superheater elements. At the same time, in the known embodiment, the feedwater collector is situated such that its longitudinal axis is below the level of the outlet chambers of the heat sink of the economizer cell.

Such a known embodiment of an inverted steam generator module consisting of modules consisting of structurally superheated superheater cells, burner cells, and economizer cells, is particularly disadvantageous in that each cell has two tube sheets and a separate tube bundle, which complicates the technical implementation and extends the entire implementation. section. In addition, the longitudinal axis of the cells and thus the entire module modulates a planar curve, which complicates the assembly of modules and the entire module section of the inverted steam generator, and also deteriorates the hydrodynamic conditions on the heat carrier and thereby increases the performance requirements of the heat carrier pumps.

The location of the heat carrier collector in the known embodiment at the inlet chamber temperature of the heat carrier deteriorates its mechanical load, in particular due to the limited compensation of the thermal expansion of the modules in the section and collector of the heat carrier.

Although the location of the steam collector over the superheater elements is advantageous in terms of compensating for the temperature dilatations of the section, this increases the constructional dimensions and the cost of implementing the entire section of the inverted steam generator modules.

Also, the positioning of the feedwater chamber below the level of the outlet chambers of the heat carrier of the cells and hence of the modules in the known embodiment leads to an increase in the building dimensions and costs of realizing the module section of the inverted steam generator.

SUMMARY OF THE INVENTION

The aforementioned drawbacks of the known embodiment are solved by the section of the reverse steam generator modules for nuclear power plants consisting of modules with an inlet chamber of a heat carrier, a superheater section 9, an evaporator section, an economizer section and a heat carrier connection chamber and a heat carrier connection pipe, a heat carrier collector and a heat carrier pipe and a steam pipe. , a steam collector, a feedwater conduit and a feedwater collector, characterized in that it consists of vertically oriented modules, the superheater section and the economizer section having a linear longitudinal axis that is not perpendicular to the earth surface, with one longitudinal heat collector collector an axis situated horizontally at the level of one side of the superheater sections, one steam collector having a longitudinal axis situated horizontally at the level of the other side of the superheater sections and one feed water collector longitudinally at an axis situated horizontally at the level of the outlet chambers of the heat carrier.

Such a solution that each module of the inverted steam generator section has only two heat carrier chambers, namely the heat carrier inlet chamber and the heat carrier outlet chamber and the associated one tube bundle tube sheet, and additionally has linear longitudinal axes of the superheater section and economizer section that are not perpendicular to the earth surface provides the advantage of ultimately simplifying the implementation of the entire module section, its smaller building dimensions, its lower overall weight, and thus the relatively low cost.

Another advantage is the positioning of the heat carrier collector with the longitudinal axis at the level of one side of the superheater sections, which makes it possible to reduce the height of the module sections of the inverted steam generator and at the same time allows the structure to dilate with the temperature, while simultaneously removing the side of the heat carrier from the water and steam side outside the modules. by positioning the steam collector having a longitudinal axis situated horizontally at the second side of the superheater sections. This also represents a significant safety benefit.

A significant advantage is that the longitudinal axis of the feedwater collector is situated horizontally at the level of the outlet chambers of the heat carrier. This solution also contributes to the smaller building dimensions of the entire section of the inverted steam generator modules.

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The section of the reverse steam generator modules for the nuclear power plant is comprised of modules consisting of an inlet chamber 2 of a heat carrier, a superheater section 3, a burner section 4, an economizer section 5 and a heat carrier outlet chamber 6. Further, the module section of the inverted steam generator is a conduit 7 of a heat carrier, a heat sink collector 8, and a heat conductor outlet conduit 9, as well as a steam conduit 10, a steam collector 11, a feed water conduit 12 and a collector and feed water. In doing so, the individual sections of the inverted steam generator module modules are configured to form vertically oriented modules, the superheater section 3 and the economizer section 5 having a linear longitudinal axis that is not perpendicular to the earth surface, with one heat sink carrier 8 with a longitudinal axis horizontally situated at the level one side of the superheater sections 3, with one steam collector 1T having a longitudinal axis oriented horizontally at the second side of the superheater sections 3 and with one feed water collector I having a longitudinal axis horizontally situated at the outlet ports 6 of the heat carrier.

The section of the reverse steam generator modules for the nuclear power plant works by bringing the heat carrier in the heat source to the heat carrier collector 8 and therefrom by connecting the heat transfer tube 7 to the heat carrier input chambers 2 and further to the superheater section 3, the evaporator section 4 and the economizer section 5 The heat exchanger is removed from the individual modules by the heat exchanger line 9 to the heat source. The heat transfer agent transfers heat to the water that is fed from both the collector and feed water and is fed further through feed water line 12 to the intermediate space of the economizer section 5, the evaporator section 4 of the superheater where it is heated and steam generated from the heat transferred therefrom. It is then discharged via the steam line 10 to the steam collector 11 and further therefrom to the steam appliance.

List of Reference Signs 1 - Feedwater Collector 2 - Heatsink Inlet Chamber 3 - Superheater Section 4 - Heat Sink Section 5 - Economizer Section 6 - Heatsink Outlet Chamber 7 - Heatsink Connection Pipeline 8 - Heat Bearer Collector 9 - Heat Transfer Line 10 - Steam Pipe 11 - steam collector 12 - feed water pipe

Claims (2)

Patent Claim A section of reverse steam generator modules for nuclear power installations comprising modules with an inlet chamber (2) of a heat carrier, a superheater section (3), a burner section (4), an economizer section (5) and a heat carrier connection tube (6) ) a heat carrier, a heat carrier collector (8) and a heat carrier outlet pipe (9) and a steam pipe (10), a steam collector (11), a feed water pipe (12) and a feed water collector (1) characterized in that it is formed vertically oriented modules, the superheater section (3) and the economizer section (5) having a linear longitudinal axis that is not perpendicular to the earth surface, with one heat transfer collector (8) having a longitudinal axis situated horizontally at one side of the superheater sections (3) with a pair of vapor having a longitudinal axis situated horizontally at the level of the second side of the superheater sections (3) and with one collector (1) feed water with a longitudinal axis situated horizontally at the level of the outlet chambers (6) of the heat carrier.