JPH03191268A - Generator - Google Patents

Abstract

PURPOSE:To enable prevention of the occurrence of a crack at a connection part and deformation of a cylinder in a furnace and to provide a generator which facilitates maintenance and enables the increase of size by a method wherein an absorbing part for a thermal stress is arranged to the side plate of the cylinder in a furnace, and an absorbing part for a thermal stress is mounted to the periphery of the bottom plate of the cylinder in a furnace. CONSTITUTION:When, during operation of the generator, a cylinder 10 in a furnace is heated to a high temperature by a combustion device 13 and a thermal force is generated at a side plate 10A and a bottom plate 10B, most of the thermal stress is absorbed by a groove 18 and a protrusion part 15. Thereby, when the side plate 10 and the bottom plate 10B are made of different members and interconnected by a weld, a crack is prevented from occurring to a connection part 10C, deformation of the cylinder 10 in a furnace can be prevented, and maintenance of the generator can be simplified. The cylinder 10 in a furnace is formed with the side plate 10A and the bottom plate 10B, and coping with the increase of the size of the generator can be facilitated.

Description

[Detailed description of the invention] B) Industrial application fields The present invention relates to a generator installed in an absorption refrigerator or the like.

(0n Conventional technology, for example, Japanese Utility Model Publication No. 18749/1987, has a furnace cylinder inside the can body, a liquid chamber is formed outside the furnace cylinder, and the combustion device is moved from the bottom plate side of the furnace cylinder to the opening side. A solution heating device is disclosed which is arranged facing the same direction and configured to heat a solution in a liquid chamber by means of a combustion device.

(c) Problems to be Solved by the Invention In the above conventional technology, in order to improve the solution heating efficiency of the solution heating device, a furnace cylinder is provided in the furnace cylinder, and the open side of the furnace cylinder is directed toward the combustion device. In this case, the furnace inner cylinder is heated by the flames blown out from the combustion device and becomes high temperature. Then, thermal stress acts on the side plates and the bottom plate. For this reason, when providing a furnace tube, it is desirable to use an integrally molded furnace tube.However, as the solution heating device becomes larger and the dimensions of the furnace tube become larger, integral molding becomes difficult. Become. If the side plate and the bottom plate are manufactured separately and connected by welding, for example, there is a risk that cracks may occur in the welded part or the furnace cylinder may be deformed due to the thermal stress. Alternatively, there was a risk that the bottom plate would be deformed.

An object of the present invention is to provide a generator that is easy to maintain and can be made larger.

(d) Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a furnace cylinder (10) that is arranged in a substantially horizontal direction within the furnace cylinder (7) and that is open to the combustion device (13) side. and a side plate (10A) of the furnace cylinder (10).
) and a bottom plate (IOB) having grooves (18) and protrusions (15) formed therein.

Further, the furnace cylinder (10) is arranged in a substantially horizontal direction within the furnace cylinder (7) and is open to the combustion device <13) side.
To provide a generator in which the side plate (IOA) of 10) is corrugated at a proper position approximately perpendicular to the axis of the furnace inner cylinder (10), and the outer periphery of the bottom plate (IOA) of the furnace inner cylinder (10) is corrugated. It is something.

(*) When the action generator is operating, the furnace inner cylinder (10) becomes high temperature due to the combustion device (13>), and the side plate (IOA> and bottom plate (IOB)
When thermal stress occurs on the side plate (15), most of this thermal stress is absorbed by the groove (18) and the protrusion (15>).
0A) and the bottom plate (IOB) are made into separate members and are connected by welding or the like, it is possible to prevent cracks from occurring in the connection part (IOC), and also to prevent the inner cylinder (10) from deforming. This makes it possible to simplify the maintenance of the generator.
) and a bottom plate (10B), making it possible to easily accommodate upsizing of the generator.

Also, when the generator is operating, the furnace cylinder (10) is connected to the combustion device (13).
), the side plate (IOA) and bottom plate (IO
When thermal stress occurs in B), each thermal stress is absorbed by the corrugated portions (23) and (22), so the connecting portion (IOC) between the side plate (IOA) and the bottom plate (IOB)
) can prevent cracks from occurring in the furnace tube 10.
) can be avoided from deforming, and the furnace cylinder (10) of the generator can be prevented from deforming.
This makes it possible to simplify maintenance such as inspection and replacement. Also, to avoid cracks at the connection part (IOC), the side plate (IOA) and bottom plate (IOB) are made separately.
Each can be connected to form a large furnace cylinder (10), and as a result, it becomes possible to easily accommodate an increase in the size of the generator.

(F) Example Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a longitudinal cross-sectional view of the direct-fired high-temperature generator of the present invention, and FIG. 2 is a cross-sectional view taken along the line A--A of the generator shown in FIG. In Figures 1 and 2, (1) is the vessel body of the high temperature generator, (
2) is an absorption liquid (solution) inflow chamber formed at the bottom of the vessel body (1), and (3A) and (3B) are a steam chamber and a steam outflow chamber formed at the top of the vessel body (1), respectively. Yes. Also,
(4> is an eliminator, (5) is a steam outlet, and (6) is an absorption liquid outlet. (7) is a furnace tube installed almost horizontally in the vessel body (1); (7) and body (1)
A solution flow path (8) is formed between the two. Also, (1
0) is a furnace cylinder arranged almost horizontally within the furnace cylinder (7), and there is a space between the furnace cylinder (10) and the furnace cylinder (7) that extends around the entire circumference of the furnace cylinder (10). A flue (11) is formed. The furnace cylinder (10) has a cylindrical side plate (
IOA> and the bottom plate (IOB) are connected by welding, and (IOC) is the connection part between the side plate (IOA) and the bottom plate (IOB). And the side plate (IOA)
A groove (thermal stress absorbing portion) (18) with a zero-shaped cross section is formed near the bottom plate (IOB) of the furnace at a substantially right angle to the axis of the furnace inner cylinder (10). Further, a protrusion (thermal stress absorbing part) (15) is formed on the outer periphery of the bottom plate (IOB). and,
The protrusion (15) has a 0-shaped cross section and a curved surface. Further, the flue (11) is provided with a plurality of fins (12). These fins (12)... are connected to the inner surface of the furnace tube (7), for example, by welding, and the respective fins (12)... are provided in parallel in the flue.

Figure 3 shows the fins (12), (12>) and the furnace cylinder (10).
〉 shows the connection structure with fin (12)
, (12) between the connecting plate (17A>) and the inside of the furnace M
(10) are connected by screws (B). Here, a plurality of connection points are provided on the opening (10a) side of the furnace cylinder (10).

(13) is a burner installed on the side wall (IA) of the vessel body (1), with the flame port (13A) facing the opening (10a) of the furnace cylinder (10), and (14) is the burner in the flue (11). This is a combustion gas chamber provided downstream, and the combustion gas that has passed through the flue (11) is collected in this combustion gas chamber (14) and discharged to the outside through a flue (not shown).

In the direct firing generator configured as above, the burner (
The combustion flame blown out from 13) ends in the furnace cylinder (10). Then, the combustion gas returns to the opening (1, Oa) in the furnace cylinder (10) as shown by the arrow in FIG. 1, and enters the flue (11). Furthermore, the combustion gas flows through each fin (12
)..., and while passing through the flue (11), heat is collected on each fin (12)... and furnace tube <7>, and 200
Flows to the combustion gas chamber (14) as exhaust gas at ~250°C,
It is discharged to the outside. Furthermore, combustion heat is transmitted from the furnace tube (10) to the furnace tube (7) via the fins (12).

In addition, the dilute absorption liquid that has flowed into the absorption liquid inflow chamber (2) flows into the furnace cylinder (7).
> The solution flows upward through the outer solution flow path (8) as shown by the arrow in FIG. 2, during which time it is heated by the furnace cylinder (7), the temperature rises, and steam is separated from the dilute absorption liquid.

When the generator is operated as described above and the furnace inner cylinder (10) is heated by the combustion flame of the burner (13), the side plate (
As shown by the solid arrow (20) in Fig. 1, thermal stress acts on the IOA> in an almost horizontal direction, and most of this thermal stress is absorbed by the contraction of the groove (18>).
Thermal stress acts on the bottom plate (10B) as shown by solid arrows (21) and (21), and most of this thermal stress is absorbed by the shrinkage of the protrusion (15) of the bottom plate (IOB). . In other words, when thermal stress is applied to the side plate (IOA) toward the bottom plate (IOB) during generator operation,
Groove (18) when working in the outer circumferential direction on the bottom plate (IOB)
The width (18a) of the groove (18a) and the width (15a) of the protrusion (15>) become narrower, and most of the thermal stress is absorbed by the groove (18) and the protrusion (15).Also, for example, after the generator is stopped, Thermal stress acts on the side plate (10A) in the opening direction, and the bottom plate (IOB>
When the width of the groove (18) (18a
), the width (15a) of the protrusion (15) becomes wider, and most of the thermal stress is absorbed by the groove (18) and the protrusion (15).

According to the above embodiment, when thermal stress is applied to the furnace cylinder (10) during operation of the generator or after the operation is stopped, the groove (18) of the side plate (IOA) and the bottom plate (IOB> The protrusion (
15) and (16) absorb most of the thermal stress, so
Connection part (IOC) between side plate (IOA) and bottom plate (IOB>)
As a result, the thermal stress acting on the
It is possible to avoid cracks in the connection part (IOC), deformation of the furnace inner cylinder (10), etc., and maintenance such as inspection of the furnace inner cylinder (10) and removal and attachment from the fins (12)... In addition, when the generator becomes large and the furnace cylinder (10) becomes large, the side plate and bottom plate can be welded and connected without integrally molding the furnace cylinder. It is possible to manufacture a cylinder, and it is possible to easily accommodate an increase in the size of the generator.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and if the furnace inner cylinder (10) is larger than the above-mentioned embodiment, the protrusion on the outer periphery of the bottom plate (10B) may be used, for example, as shown in FIG. Department (
A protrusion (16) is further formed on the center side of the protrusion (15).
15) The same effect can be obtained by absorbing thermal stress using (16). Further, as shown in FIG. 6, the same effect can be obtained by corrugating the outer peripheral portion of the bottom plate (IOB) and absorbing thermal stress by the corrugated portion (22). Also, the furnace cylinder (10)
In the case where the side plate (10A) is connected to the bottom plate (10B), the same effect can be obtained by corrugating the side of the side plate (10A) that is connected to the bottom plate (10B) and absorbing thermal stress with this wave-formed portion (23).

(G) Effects of the Invention The present invention is a generator configured as described above, in which a furnace cylinder is arranged in a substantially horizontal direction within the furnace cylinder, a combustion device is arranged on the opening side of the furnace cylinder, Since thermal stress absorption parts are formed in the bottom plate and side plate of the furnace cylinder, when the generator is operated, the furnace cylinder is heated by the combustion device, and the thermal stress generated in the high temperature side plate and bottom plate is absorbed by the side plate and the bottom plate. Thermal stress can be absorbed by the thermal stress absorption section of the bottom plate, and even if the side plate and bottom plate are made of separate materials and connected by welding or other means, the thermal stress acting on the connection between the side plate and the bottom plate can be significantly reduced. As a result, generation of cracks at the connection portion and deformation of the furnace cylinder can be avoided, and maintenance of the generator can be simplified.

Further, there is no need to integrally mold the furnace inner cylinder, and the furnace inner cylinder can be easily made larger, and the generator can easily be made larger.

In addition, by arranging the furnace cylinder that opens toward the combustion device side in the furnace cylinder in a substantially horizontal direction, by waving the rear part of the side plate of the furnace cylinder almost perpendicular to the axis, and by waving the outer periphery of the bottom plate. ,
Most of the thermal stress that acts on the side plates and bottom plate during generator operation can be absorbed by the respective corrugated sections. Even if the bottom plate and the bottom plate are made of separate members and connected by welding or the like, it is possible to avoid cracks at the joints and deformation of the furnace cylinder, and as a result, maintenance of the generator is simplified. can be achieved.

[Brief explanation of drawings]

1 to 6 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view of the generator, and FIG. 2 is a sectional view taken along line A-A of the generator shown in FIG. 1. 3 is an enlarged view of the main part of FIG. 2, FIG. 4 is a front view of the furnace cylinder, and FIGS. 5 and 6 are main parts of the furnace cylinder, respectively, showing other embodiments of the present invention. They are a side view and a sectional view of a main part. (1) ... vessel body, (7) ... furnace tube, (1o).
・Inner furnace cylinder, (IOA)・(11 plates, (IOB)・・
・Bottom plate, (IOC) - Connection part, (15) - Projection (thermal stress absorption part), (18) - W4 (thermal stress absorption part), (22) - Waveform forming part , (23)...
- Waveform shaping section.

Claims (1)

[Scope of Claims] 1. A generator including a furnace cylinder arranged horizontally within the vessel body and having a liquid chamber formed on the outside, and a combustion device provided in the vessel body and facing inside the furnace cylinder, The furnace cylinder is arranged almost horizontally in the furnace cylinder and has an opening toward the combustion device side, and a thermal stress absorbing part is formed on the side plate of the furnace cylinder, and a heat stress absorbing part is formed on the circumference of the bottom plate of the furnace cylinder. A generator characterized by forming a thermal stress absorbing part. 2. In a generator equipped with a furnace cylinder arranged horizontally inside the furnace cylinder and having a liquid chamber formed on the outside, and a combustion device installed in the furnace cylinder and facing inside the furnace cylinder, there is a The furnace cylinder is arranged horizontally and has an opening on the combustion equipment side, and the rear part of the side plate of the furnace cylinder is corrugated almost perpendicular to the axis of the furnace cylinder, and the outer periphery of the bottom plate of the furnace cylinder is corrugated. A generator characterized by being molded.