RU2761059C1 - Method for manufacturing a tank boiler with a heating jacket and a tank boiler with a heating jacket - Google Patents

Abstract

FIELD: railway engineering.

SUBSTANCE: invention relates to railway transport, namely to the design of a tank boiler with a heating jacket and to the technology of its manufacture and assembly. The boiler (1) of the tank is assembled from the shell (1.1), the bottoms (1.2), the heating jacket (1.3), the casing of which is mounted on the frame, and the drain device (2). In the lower part of the boiler (1), the seat is made in the form of a cylindrical base flange. The drain device (2) is made in the form of a housing, on top of which a heating jacket is mounted. A cylindrical base flange is fixed in the upper part of the heating jacket. On the outer surface of the cylindrical base flange of the heating jacket of the drain device, support shelves are fixed for the sheets of the casing of the heating jacket (1.3) of the boiler (1) of the tank. The method for manufacturing a tank boiler with a heating jacket is characterized by the assembly of the tank boiler from the shell, bottoms, seat for the drain device, the frame of the heating jacket, as well as the assembly of the drain device before it is installed on the tank boiler and the heating jacket of the drain device, in the upper part of which a cylindrical base flange is performed. In the upper part of the heating jacket of the drain device and in the cylindrical base flange of the heating jacket of the drain device, through windows are made to communicate the heating cavity of the heating jacket of the drain device with the heating cavity of the heating jacket of the tank boiler. The assembled body of the drain device is installed on the tank boiler and fixed with mounting welds. Hydraulic tests of the tank boiler are carried out and the casing of the heating jacket of the tank boiler is mounted, placing casing sheets on the frame fixed to the tank boiler and on the surface of the support shelves.

EFFECT: invention improves the manufacturing quality of the tank boiler, increases the reliability of the tank boiler.

2 cl, 7 dwg

Description

The invention relates to railway transport, in particular to the technology of manufacturing and assembling tank boilers with a heating jacket, as well as to the design of the tank boiler.

A known method of manufacturing a tank boiler with a heating jacket, including:

- assembly of a tank boiler, consisting of a shell, bottoms, a saddle for a drain device, a frame of a heating jacket,

- Carrying out hydrotesting of the tank boiler,

- control of assembly welds of the tank boiler,

- installation of the heating jacket and final assembly of the tank, see RU 2257304, B61D 5/00, publ. 07/27/2005 (prototype).

The disadvantage of this method is the complexity of the operations of the visual and instrumental control of the assembly seams after hydrotesting the tank boiler to determine the quality of these seams, in particular the assembly welds at the junction of the drain device with the boiler shell. This complexity is due to the installation of overhead half-rings, which have a significant overlapping area of the assembly welds, with which a drain device is attached to the shell of the tank boiler, as a result of which these places are inaccessible for visual and instrumental control operations.

The known design of a tank boiler, assembled from a shell, bottoms, a saddle for a drain device, a frame for a heating jacket, see RU 2257304, B61D 5/00, publ. 07/27/2005 (prototype).

The technical problems inherent in this device are low reliability and design complexity due to the use of overhead half-rings at the place of installation of the drain device, while the inability to use these overhead half-rings as load-bearing elements for the sheets of the heating jacket of the tank boiler requires the use of additional load-bearing elements installed around drain device in the form of supporting ribs, corners.

The technical result of the proposed method and device is to improve the manufacturing quality of the tank boiler, increase the reliability of the tank boiler.

The claimed technical result is achieved by the method of manufacturing a tank boiler with a heating jacket, characterized by

- assembly of a tank boiler from a shell, bottoms, a saddle for a drain device, a frame of a heating jacket,

- carrying out hydrotesting of the tank boiler,

- control of assembly welds of the tank boiler,

- final assembly of the tank boiler with the installation of heating jacket sheets,

wherein

- when assembling the tank boiler, the saddle for the drain device is made in the form of a cylindrical base flange, which is fixed in the lower part of the tank boiler,

- collect the drain device before installing it on the tank boiler,

- collect the heating jacket of the drain device,

wherein

- in the upper part of the heating jacket of the drain device, a cylindrical base flange is made, designed to be placed on the cylindrical base flange of the tank boiler, with an inner diameter commensurate with the outer diameter of the cylindrical base flange of the tank boiler,

- on the outer surface of the cylindrical base flange of the heating jacket of the drain device, support shelves are fixed, made of plates bent along a radius equal to the radius of the casing of the heating jacket of the tank boiler, and designed to accommodate sheets of the casing of the heating jacket of the tank boiler,

- in the upper part of the heating jacket of the drain device and in the cylindrical base flange of the heating jacket of the drain device, through windows are made, designed to communicate the heating cavity of the heating jacket of the drain device with the heating cavity of the heating jacket of the tank boiler,

- the assembled body of the drain device is installed on the boiler of the tank,

for this

- align the inner surface of the cylindrical base flange of the drain device with the outer surface of the cylindrical base flange of the tank boiler,

- fix the drain device with its heating jacket on the tank boiler and on the cylindrical base flange of the tank boiler with mounting welds,

- carry out hydrotesting of the tank boiler, during which they control the quality of the assembly welds performed in the previous operations,

- then the final assembly of the tank boiler is carried out, namely, the sheets of the casing of the heating jacket of the tank boiler are mounted on the frame fixed to the boiler of the tank and on the surface of the support shelves fixed on the outer surface of the cylindrical base flange of the heating jacket of the drain device.

The inventive method of manufacturing a tank boiler with a heating jacket differs from the prototype in that

- when assembling the tank boiler, the saddle for the drain device is made in the form of a cylindrical base flange, which is fixed in the lower part of the tank boiler,

- collect the drain device before installing it on the tank boiler,

- collect the heating jacket of the drain device,

wherein

- in the upper part of the heating jacket of the drain device, a cylindrical base flange is made, designed to be placed on a cylindrical base flange fixed to the tank boiler, with an inner diameter commensurate with the outer diameter of the cylindrical base flange of the saddle fixed to the tank boiler,

- on the outer surface of the cylindrical base flange of the heating jacket of the drain device, support shelves are fixed, made of plates bent along a radius equal to the radius of the heating jacket casing, and designed to accommodate the cistern boiler casing sheets on them,

- in the upper part of the heating jacket of the drain device and in the cylindrical base flange of the heating jacket of the drain device, through windows are made, designed to communicate the heating cavity of the heating jacket of the drain device with the heating cavity of the heating jacket of the tank boiler,

- the assembled body of the drain device is installed on the boiler of the tank,

wherein

- align the inner surface of the cylindrical base flange of the drain device with the outer cylindrical surface of the cylindrical base flange of the seat, fixed to the tank boiler,

- fix the drain device with mounting seams together with its heating jacket on the tank boiler and on the guide cylindrical base flange of the saddle,

- carry out hydrotesting of the tank boiler, during which they control the quality of the assembly welds performed in the previous operations;

- then the casing of the heating jacket of the tank boiler is mounted, placing its sheets on the frame fixed to the boiler of the tank and on the surface of the support shelves fixed on the outer surface of the cylindrical base flange of the heating jacket of the drain device.

An increase in the manufacturing quality of a tank boiler and an increase in its reliability is also achieved by the design of a tank boiler with a heating jacket, assembled from a shell, bottoms, a saddle for a drain device, a frame for a heating jacket of a boiler,

wherein

- the saddle for the drain device is made in the form of a cylindrical base flange, fixed in the lower part of the tank boiler,

- a heating jacket is mounted over the housing of the drain device, which forms an internal heating cavity between the housing of the drain device and the heating jacket,

- in the upper part of the heating jacket of the drain device, a cylindrical base flange is fixed, the inner diameter of which is designed to match the outer diameter of the cylindrical base flange of the tank boiler,

- on the outer surface of the cylindrical base flange of the heating jacket of the drain device, support shelves are fixed, made of plates bent along a radius equal to the radius of the heating jacket casing, on these shelves the ends of the casing sheets of the heating jacket of the tank boiler are fixed,

- through windows are made in the upper part of the heating jacket of the drain device and in its cylindrical base flange, designed to communicate the internal heating cavity of the heating jacket of the drain device with the heating cavity formed between the heating jacket of the tank boiler and the surface of the tank boiler.

The inventive tank boiler with a heating jacket differs from the prototype in that:

- the saddle for the drain device is made in the form of a cylindrical base flange, fixed in the lower part of the tank boiler,

- a heating jacket is mounted over the housing of the drain device, which forms an internal heating cavity between the housing of the drain device and the heating jacket,

- in the upper part of the heating jacket of the drain device, a cylindrical base flange is fixed, the inner diameter of which is designed to match the outer diameter of the cylindrical base flange of the tank boiler,

- on the outer surface of the cylindrical base flange of the heating jacket of the drain device, support shelves are fixed, made of plates bent along a radius equal to the radius of the heating jacket casing, on these shelves the ends of the casing sheets of the heating jacket of the tank boiler are fixed,

- through windows are made in the upper part of the heating jacket of the drain device and in its cylindrical base flange, designed to communicate the internal heating cavity of the heating jacket of the drain device with the heating cavity formed between the heating jacket of the tank boiler and the surface of the tank boiler.

These differences from the prototypes of the proposed method of manufacturing a tank boiler with a heating jacket and a tank boiler with a heating jacket make it possible to assert that the proposed objects comply with the criterion of patentability of the invention - "novelty". Comparison of the proposed method and device not only with the corresponding prototypes, but also with other technical solutions in this field of technology, did not reveal in them features similar to the distinctive features of the proposed technical solution, which allows us to conclude that the invention is in accordance with the patentability condition - "inventive step".

The invention is shown in the drawings, where:

- in FIG. 1 - tank boiler with heating jacket, main view;

- in FIG. 2 - tank boiler without a drain device with a frame for the heating jacket of the tank boiler, the sheets of the heating jacket are not shown conventionally, main view;

- in FIG. 3 - complete drainage device, general view;

- in FIG. 4 - tank boiler assembly with a drain device with a frame for the heating jacket of the tank boiler, the sheets of the jacket of the heating jacket are also not shown conventionally, main view;

- in FIG. 5 - connection of the drain device and the tank boiler, without the heating jacket of the tank boiler, local view, isometric projection;

- in FIG. 6 - connection of the drain device and the boiler of the tank, the heating jacket is assembled, top view, local view, isometric projection;

- in FIG. 7 is the same, bottom view, isometric projection.

The proposed device contains a boiler 1 (Fig. 1, 2) of a tank, assembled from a shell 1.1, bottoms 1.2, a heating jacket 1.3, made of a casing, recruited from sheets and installed on a frame 1.4. A drain device 2 is installed in the lower part of boiler 1.

To install the drain device 2 (Fig. 3, 4) on the boiler 1 of the tank, a saddle is fixed in the lower part of the boiler 1 of the tank, made in the form of a cylindrical base flange 1.5 (Fig. 5). This saddle is used to place the drain device 2 on it. The drain device 2 is made in the form of a housing 2.1, on top of which a heating jacket 2.2 is mounted, which forms a heating cavity "A" between the housing of the drain device 2 (Fig. 6, 7).

In the upper part of the heating jacket 2.2 of the drain device 2, intended for connection with a saddle in the form of a cylindrical base flange 1.5, a cylindrical base flange 2.3 is made, the inner diameter of which is designed to align with the outer diameter of a cylindrical base flange 1.5. On the outer surface of the cylindrical base flange 2.3, support shelves 2.4 are fixed, made of plates bent along a radius equal to the radius of the casing of the heating jacket 1.3.

In the upper part of the heating jacket 2.2 of the drain device 2 and in its cylindrical base flange 2.3, through windows 2.5 are made, designed to communicate the heating cavity "A" of the heating jacket 2.2 with the heating cavity "B" formed by the heating jacket 1.3 and the surface of the boiler 1 of the tank. The heating jacket 2.2 of the drain device 2 is equipped with an inlet 2.6 with a connecting flange 2.7 for connecting to a hot steam pipeline (not shown).

The claimed technical result is achieved by the proposed method of manufacturing a tank boiler with a heating jacket and the proposed design of the boiler 1 as follows.

The boiler 1 of the tank is assembled from the shell 1.1 and two bottoms 1.2.

The saddle for the drain device 2 is made in the form of a cylindrical base flange 1.5, which is welded into the shell 1.1 in the lower part of the boiler 1.

Then, on the shell 1.1 of the boiler 1, the frame 1.4 is fixed with mounting seams, intended for the installation of the heating jacket 1.3 of the boiler 1 of the tank on it.

Collect the drain device 2 and its heating jacket 2.2.

In the upper part of the heating jacket 2.2, a cylindrical base flange 2.3 is made, on the outer surface of which support shelves 2.4 are fixed, made of plates bent along a radius equal to the radius of the casing of the heating jacket 1.3. Support shelves 2.4 are used to secure the ends of the sheets of the casing of the heating jacket 1.3 of the boiler 1 of the tank.

In the upper part of the heating jacket 2.2 of the drain device 2 and in its cylindrical base flange 2.3, through windows 2.5 are made, designed to communicate the heating cavity "A" of the heating jacket 2.2 with the heating cavity "B" formed by the heating jacket 1.3 and the surface of the boiler 1 of the tank.

Fix the assembled drain device 2 on the boiler 1 of the tank.

For this, the body 2.1 of the drain device 2 is placed inside the cylindrical base flange 1.5, welding the body 2.1 with mounting welds "B".

On top of the welded body 2.1 of the drain device 2, a heating jacket 2.2 of the drain device 2 is mounted. For this, the inner surface of the cylindrical flange 2.3 of the drain device 2 is aligned with the outer surface of the cylindrical base flange 1.5. Weld with the assembly weld "D" and the assembly weld "D" through the still free space between the surface of the shell 1.1 of the boiler 1 and the support shelf 2.4.

After that, the boiler 1 of the tank is hydro-tested.

Due to the fact that the casing of the heating jacket 1.3 on the boiler 1 has not yet been mounted, there is the possibility of an unobstructed visual or instrumental inspection of all assembly welds applied to the shell 1.1 when fixing the frame 1.4, as well as assembly seams after fixing the cylindrical base flange 1, the body 2.1 drain device 2.

After successfully passing the hydrotesting of the boiler 1, the tanks carry out operations that do not require the use of waterproof welds.

Mount the casing of the heating jacket 1.3 on the frame 1.4. For this, the sheets of the casing of the heating jacket 1.3 are fixed on the frame 1.4, forming internal heating cavities for hot air. The ends of the sheets of the casing of the heating jacket 1.3 in the area of the drain device 2 are placed and fixed on the surface of the support shelves 2.4. The assembly welds used to secure the heating jacket 1.3 are not subjected to internal pressure in the boiler 1 of the tank during its operation and do not require an additional hydraulic test.

The boiler 1 tank with a heating jacket 1.3 is used as follows.

Through the connecting flange 2.7 at the inlet pipe 2.6, hot water vapor is supplied under pressure, which is necessary to heat the thickened and frozen cargo in the boiler 1 of the tank.

Through the heating cavity "A" formed between the housing 2.1 of the drain device 2 and the heating jacket 2.2, hot steam through the through windows 2.5 is supplied to the heating cavity "B" of the heating jacket 1.3 of the boiler 1 of the tank, heating the thickened and frozen cargo in the boiler 1 of the tank, leaving while through the outlets of the heating jacket 1.3 (not shown) into the atmosphere.

Thus, the proposed design of the tank and the method of its manufacture allow to improve the quality of manufacturing of the tank boiler, increase the reliability of the tank boiler.

Claims (26)

1. A method of manufacturing a tank boiler with a heating jacket, characterized by - assembly of a tank boiler from a shell, bottoms, a saddle for a drain device, a frame of a heating jacket, - carrying out hydrotesting of the tank boiler, - control of assembly welds of the tank boiler, - final assembly of the tank boiler with the installation of heating jacket sheets, characterized in that - when assembling the tank boiler, the saddle for the drain device is made in the form of a cylindrical base flange, which is fixed in the lower part of the tank boiler, - collect the drain device before installing it on the tank boiler, - collect the heating jacket of the drain device, wherein - in the upper part of the heating jacket of the drain device, a cylindrical base flange is made, designed to be placed on a cylindrical base flange fixed to the tank boiler, with an inner diameter commensurate with the outer diameter of the cylindrical base flange of the tank boiler, - on the outer surface of the base flange of the heating jacket of the drain device, support shelves are fixed, made of plates bent along a radius equal to the radius of the heating jacket casing, and designed to accommodate sheets of the casing of the heating jacket of the tank boiler on them, - in the upper part of the heating jacket of the drain device and in the cylindrical base flange of the heating jacket of the drain device, through windows are made, designed to communicate the heating cavity of the heating jacket of the drain device with the heating cavity of the heating jacket of the tank boiler, - the assembled body of the drain device is installed on the boiler of the tank, wherein - align the inner surface of the cylindrical base flange of the heating jacket of the drain device with the outer cylindrical surface of the cylindrical base flange of the tank boiler, - fix the drain device with its heating jacket on the tank boiler and on the cylindrical base flange of the tank boiler with mounting welds, - carry out hydrotesting of the tank boiler, during which they control the quality of the assembly welds performed in the previous operations; - then the casing of the heating jacket of the tank boiler is mounted, placing its casing sheets on the frame fixed to the boiler of the tank and on the surface of the support shelves fixed on the outer surface of the cylindrical base flange of the heating jacket of the drain device. 2. A tank boiler with a heating jacket, assembled from a shell, bottoms, a saddle for a drain device, a frame for a heating jacket of the boiler, characterized in that - the saddle for the drain device is made in the form of a cylindrical base flange, fixed in the lower part of the tank boiler, - a heating jacket is mounted over the housing of the drain device, forming a heating cavity between the housing of the drain device and the heating jacket, - in the upper part of the heating jacket of the drain device, a cylindrical base flange is fixed, the inner diameter of which is designed to match the outer diameter of the cylindrical base flange of the tank boiler, - on the outer surface of the cylindrical base flange of the heating jacket of the drain device, support shelves are fixed, made of plates bent along a radius equal to the radius of the heating jacket casing, on these shelves the ends of the casing sheets of the heating jacket of the tank boiler are fixed, - through windows are made in the upper part of the heating jacket of the drain device and in its cylindrical base flange, intended for communication of the drain device with the heating cavity formed between the heating jacket and the surface of the tank boiler.

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