JP2012202571A - Condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stress reducing structure of a water chamber in a condenser.SOLUTION: The condenser includes the water chamber having a side plate with a curved surface; a cylindrical member projected from a hole provided in the side plate and having a hollow hole; first plate members installed at the ends of the side plate and having curved surfaces; a first reinforcing member provided on the convex side out of the curved surface of the side face and mounted to the side plate to cover the side plate and the first plate members; and an internal reinforcing member provided on the concave side out of the curved surface of the side face and connected to the first reinforcing member to support from a reverse direction to the first reinforcing member.

Description

  The embodiment of the present invention relates to a stress reduction structure for a water chamber in a condenser.

  In the condenser water chamber, since the cylindrical structure cannot be adopted, the water chamber is deformed by the internal pressure. Due to the deformation, there is a problem that a stress exceeding the yield stress is generated in each part of the water chamber, and permanent set remains.

  Therefore, the T-shaped rib is provided as a reinforcing rib on the outside of the water chamber, but it is a flat plate structure that is inappropriate for a pressure vessel and does not have internal reinforcement. When the pressure increases, there is a problem that the reinforcing member required for the countermeasure is enlarged and the mass is greatly increased.

  Further, the condenser water chamber has a diaphragm plate disposed between two water chambers and an auxiliary plate attached to an intermediate portion of the diaphragm plate. It does not mention the reinforcing structure of the water chamber itself, and is different from the technical field of the present invention.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a thin-walled water chamber in which permanent distortion due to high internal pressure is reduced to a level below an allowable stress.

Japanese Patent Publication No. 2-48835 JP 2000-121258 A

  An object of this invention is to provide the condenser which has a stress reduction structure in a water chamber.

  A condenser according to an aspect of the present invention includes a side plate having a curved surface, a cylindrical member having a hollow hole protruding from a hole provided in the side plate, and a curved surface installed at an end of the side plate. A first reinforcing member attached to a side plate so as to cover the side plate and the first plate member, the first reinforcing member provided on the convex side of the curved surface of the side surface, A water chamber having an internal reinforcing member that is provided on the concave surface side of the curved surface and that supports the first reinforcing member from the opposite direction.

It is a front view of a condenser in an embodiment of the invention. It is a schematic diagram of the condenser water chamber in the embodiment of the present invention. It is a schematic diagram of the condenser water chamber in the embodiment of the present invention. It is a schematic diagram of the condenser water chamber in the embodiment of the present invention. It is a schematic diagram of the condenser water chamber in the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be illustrated with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably. FIG. 1 is an overall view of the condenser 1. Water chambers are installed at both ends of the condenser 1. The water chamber is connected to the condenser 1 via the flange 18. Hereinafter, embodiments of the condenser according to the present invention will be described.

  First, the first embodiment of the present invention will be described. In the first embodiment, the water chamber is a dome shape. These water chambers are referred to as a dome-shaped water chamber 12.

  FIG. 2A is a perspective view of the dome-shaped water chamber 12. FIG. 2B is a partially enlarged view of FIG. 2A viewed from the X-axis direction and is connected to the condenser 1. FIG.2 (c) is the figure which looked at FIG.2 (a) from back.

  The dome-shaped water chamber 12 includes a side plate 13, a ceiling plate 14, and a bottom plate 15, and has a cooling water access account 11 in a hole provided near the center of the side plate 13. The connecting portion 20 of the side plate 13 and the ceiling plate 14 has a discontinuous shape, and when receiving pressure from the inside of the cylinder, the shape of the side plate 13 and the ceiling plate 14 tends to be deformed outward. A large stress is generated in the connecting portion 20. In particular, the greatest stress is generated at the center of the joint portion 20, that is, the joint center portion 20a. Similarly to the connecting portion 20 of the ceiling plate 14, the connecting portion 21 of the side plate 13 and the bottom plate 15 is also discontinuous in shape, so that excessive stress is generated in the connecting central portion 21a. Therefore, according to the present invention, the internal reinforcing member 16 (for example, a pipe having a circular cross section) is installed inside the joint central portion 20a of the side plate 13 and the ceiling plate 14 and the joint central portion 21a of the side plate 13 and the bottom plate 15. The coupling center portions 20a and 21a are near the center between the upper end of the water chamber and the end of the cooling water access account, that is, the position in the Y direction of h ″ where hh ″ = h ″ h ′ in FIG. (The illustration is omitted in FIG. 2 (b).) Further, the side plate 13 and the ceiling plate 14 and the side plate 13 and the bottom plate 15 are arranged so as to cover the coupling center portions 20a and 21a on the center line of the internal reinforcing member 16. The flange 18 is provided in the edge part of the side board 13, the ceiling board 14, and the baseplate 15. The bee-rib rib A17 has a structure which is not couple | bonded with the flange 18. As shown in FIG.

  When the pressure in the water chamber is received, the side plate 13, the ceiling plate 14, and the bottom plate 15 of the water chamber main body are deformed outward. Due to the deformation, a very large force acts on the coupling central portion 20a of the coupling portion 20 of the side plate 13 and the ceiling plate 14 and the coupling central portion 21a of the coupling portion 21 of the side plate 13 and the bottom plate 15, but the internal reinforcing member 16 The side plate 13 is prevented from being deformed by being pulled. At the same time, bevel ribs A17 on the side plate 13 and the ceiling plate 14 and the side plate 13 and the bottom plate 15 respectively suppress deformation of the side plate 13, the ceiling plate 14 and the bottom plate 15 from the outside. By these actions, the deformation of the water chamber main body becomes minute, the maximum stress value is reduced, and the stress can be within the allowable stress. As a result, it is possible to significantly reduce the mass of the member for the countermeasure when increasing the thickness of the side plate 13, the ceiling plate 14, and the bottom plate 15 or responding by increasing the size of the reinforcing portion. .

  FIG. 3A is a perspective view of the dome-shaped water chamber 22 in the second embodiment of the present invention. FIG. 3 (b) is a partially enlarged view of FIG. 3 (a) viewed from the X-axis direction, and is connected to a condenser. The beveled rib shape of the first embodiment is extended to the flange side, and the beveled rib A27 is welded to the flange 18, and the other parts are the same as those of the first embodiment. A duplicate description with the first embodiment is omitted.

  Describes the action when pressure is applied. Unlike the first embodiment, the Hachimaki rib A27 is extended and connected to the flange 18 so that the load can be distributed to the flange 18 and deformation of the side plate, ceiling plate, and bottom plate can be further suppressed. It becomes.

  According to the present embodiment, as in the first embodiment and FIG. 2C, the internal reinforcing member 16 and the bee rib A27 suppress the deformation of the side plate 13, the ceiling plate 14, and the bottom plate 15, so that the coupling portions 20, 21 It is possible to keep the stress generated in the permissible stress. As a result, it is possible to significantly reduce the mass of the member for the countermeasure when increasing the thickness of the side plate 13, the ceiling plate 14, and the bottom plate 15 or responding by increasing the size of the reinforcing portion. .

  FIG. 4 is a perspective view of the dome-shaped water chamber 32 in the third embodiment of the present invention. A duplicate description of the same structure as in the first and second embodiments is omitted.

  In addition to the first and second embodiments, two reinforcing ribs A38 are disposed outside the water chamber at equal distances from the center of the side plate in the vertical direction. Install by welding to the cooling water access account, the outside of the side plate and the flange. In this embodiment, two reinforcing ribs A38 are installed. However, the number of reinforcing ribs A38 is not limited to two as long as they can be reinforced, and may be one or three or more.

  Describes the action when pressure is applied. A large stress is generated in the vicinity of the coupling portion between the cooling water access account 31 and the side plate 33 because a force to deform outward is applied to the cooling water access account 31 to which pressure is applied. Therefore, by adopting the structure of the present embodiment, it is possible to cope with the stress by increasing the thickness of the side plate 33, the ceiling plate 34, and the bottom plate 35, or by increasing the size of the reinforcing portion. Can be greatly reduced.

  A fourth embodiment of the present invention will be described. In the first to third embodiments, the dome type water chamber is used, but in this embodiment, a bonnet type water chamber is used.

  FIG. 5A is a perspective view of a bonnet-type water chamber 52 according to the fourth embodiment of the present invention. FIG. 5B is a view of FIG. 5A viewed from the X-axis direction.

  The water chamber main body includes a side plate 43, a ceiling plate 44, and a bottom plate 45 combined with a semi-cylindrical type, and a side plate 43 and a flat portion 55 on the extension of the ceiling plate 44. A plurality of reinforcing ribs B48 are set parallel to the YZ plane and parallel to the XY plane, depending on the position of the plane portion 55, on the plane portion 55. The reinforcing rib B48 has a quadrangular prism shape and is inclined only on the surface on the flange 18 side. Hachimaki ribs B47b are set at right angles to the reinforcing ribs B48 at the boundary between the adjacent reinforcing ribs B48 and joined by welding.

  With such a structure, both ends of the reinforcing rib B48 are fixed to the flange 18 and the wasp rib B47b. Further, similarly to the dome-shaped water chamber described in the first to third embodiments, the internal reinforcing member 46 is installed near the center where the shape discontinuity of the side plate and the ceiling plate is the largest. As the internal reinforcing member 46, for example, a circular reinforcing pipe is used. On the center line of the internal reinforcing member 46, a bee rib A47a is installed by welding a side plate, a ceiling plate, and the outside from the center of the shape discontinuity portion. Hachimaki rib A47a has a structure bonded to Hachimaki rib B47b.

Describes the action when pressure is applied. With the above configuration, the semi-cylindrical portion exhibits the same operation as that of the second embodiment. Moreover, this Embodiment has a plane part in the water chamber main body. Regarding the deformation of these flat portions, since the reinforcing ribs B48 and the beveled ribs B47b are set, the deformation of the water chamber main body including the parallel portions can be reduced.
According to the present embodiment, the same effect as that of the second embodiment can be obtained with respect to the semi-cylindrical upper portion. It is possible to reduce the stress generated in the main body by suppressing the deformation of the main body by the reinforcing rib B48 and the wasp rib B47b. As a result, it is possible to significantly reduce the mass required for countermeasures, rather than increasing the thickness of the side plate 43, the ceiling plate 44, and the bottom plate 45.

  According to these embodiments described above, it is possible to reduce deformation due to stress that the water chamber receives.

  The present invention is not limited to these embodiments. In other words, those appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, each element included in the above-described embodiment and its material, condition, shape, size, and the like are not limited to those illustrated, and can be appropriately changed.

  DESCRIPTION OF SYMBOLS 1 ... Condenser, 11 ... Cooling water entrance / exit, 12 22 32 ... Water chamber, 13 ... Side plate, 14 ... Ceiling plate, 15 ... Bottom plate, 16 ... Internal reinforcement member, 17 27 47a ... Hachimaki rib A, 47b ... Hachimaki rib B 48 ... Reinforcement rib B

Claims (7)

A side plate having a curved surface;
A cylindrical member protruding from the hole provided in the side plate and having a hollow hole,
A first plate member having a curved surface installed at an end of the side plate;
A first reinforcing member that is provided on the convex side of the curved surface of the side surface and is attached to the side plate so as to cover the side plate and the first plate member;
A condenser characterized by a water chamber having an internal reinforcing member that is provided on the concave surface side of the curved surface of the side surface and that is connected to the first reinforcing member and supports the first reinforcing member from the opposite direction. A second plate member installed at an end of the side surface opposite to the first plate member;
The first reinforcing member, which is provided on the convex surface side of the curved surface of the side surface and is attached to the side plate so as to cover the side plate and the second plate member. Condenser.   The condenser according to claim 2, wherein the first plate member and the second plate member have curved surfaces.   The condenser according to claim 2 or 3, wherein the internal reinforcing member has a pipe shape.   The inner reinforcing member is provided on the concave side of the curved surface of the side surface, and is connected to the second plate member to support the first reinforcing member from the opposite direction. 4. The condenser according to 4.   A flange provided around an end opposite to the coupling portion between the side plate, the first plate member, and the second plate member, and at least of the first reinforcing member and the second reinforcing member; 6. A condenser according to any one of claims 2 to 5, characterized in that one is coupled to the flange.   A plurality of third reinforcing members provided around the opposite end of the side plate and the first plate member, and a fourth reinforcing member provided at a boundary between the adjacent third reinforcing members; The condenser according to claim 1, further comprising: a bottom plate provided at an end portion of the side plate opposite to the coupling portion with the first plate member.

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