JPH0769118B2 - Unit type heat exchanger - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger formed of an integrally molded forging material, and more particularly to a unit type capable of forming a large heat exchanger by combining main bodies of the integrally molded forging material in parallel. It relates to a heat exchanger.

[0002]

2. Description of the Related Art A conventional shell-and-tube type heat exchanger is known as a conventional heat exchanger, and the known shell-and-tube type heat exchanger includes a cylindrical body made of a thick plate and a heat transfer tube incorporated therein. It is composed of a group and a supporting leg is attached to the body, a fluid inlet is formed at one end and a fluid outlet is formed at the other end, and a baffle for partitioning the body into a plurality of chambers is attached to the body. The tube material for the heat transfer tube is arranged in a linear shape or a U shape.

[0003]

A conventional shell-and-tube heat exchanger requires a plurality of constituent members such as a thick plate material for a body, a tube material for a heat transfer tube, and a forged material for a tube sheet. The structure is complicated, and various machining and inspection work must be performed, which increases the manufacturing cost, makes maintenance and inspection of the heat transfer tube difficult due to its structure, and cracks in the tube or shell due to the internal pressure of the tube or shell. If it occurs, there is a problem in that the internal fluids may be mixed with each other or the internal fluids may be discharged to the outside, and in some cases, the damaged member may be missile and scattered.

It is an object of the present invention to provide a unit type heat exchanger which has a simple structure, can be manufactured inexpensively and easily, is easy to maintain and is extremely safe, and can form a large heat exchanger. It is in.

[0005]

A unit type heat exchanger according to the present invention is provided with a plurality of heat transfer holes in a plurality of rows and columns extending in the longitudinal direction of a main body of a square pole made of integrally molded forging material. The heat transfer holes for the heating fluid and the heat transfer holes for the fluid to be heated are adjacent to each other and alternately arranged in every other row, and a heating fluid inflow hole is provided at one end of the side surface in the longitudinal direction of the main body. An end is provided with an inflow hole for the fluid to be heated, one end of the opposite side surface is provided with an outflow hole for the fluid to be heated facing the inflow hole for the fluid to be heated, and the other end is opposed to the inflow hole for the fluid to be heated. An outflow hole for heating fluid is provided.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A unit type heat exchanger according to the present invention comprises a quadrangular prism-shaped main body 1 made of an integrally molded forging material.
A plurality of heat transfer holes 2 on a side surface a perpendicular to the longitudinal direction of
The heat transfer hole 2 is vertically penetrated to the side surface b opposed to the side surface a. As shown in FIG. 1, the plurality of heat transfer holes 2 are the upper two holes.
Arrange in 6 rows from a to lower 2f, and set the number of holes in one row to 6
The six heat transfer holes 2 are arranged in a regular array in 6 rows from 2a to 2f. Although the main body 1 has a quadrangular prism shape in the illustrated embodiment, it may have any shape such as a hexagonal prism shape or an octagonal prism shape, and the number of rows of the heat transfer holes 2 and the number of holes in one row may be changed. You can select as many as you like.

On the side surface c perpendicular to the side surfaces a and b of the main body 1, an inflow hole 3 for one fluid, eg, a heating fluid, is provided near the end portion adjacent to the side surface a, and the other is provided near the end portion adjacent to the side surface b. An inflow hole 4 for a fluid, for example, a fluid to be heated is provided, and an outflow hole for the other fluid, for example, a fluid to be heated, is provided on the side surface d perpendicular to the side surfaces a and b of the body 1 near the end portion adjacent to the side surface a. 5
In the vicinity of the end portion adjacent to the side surface b, one fluid, for example, a heating fluid outflow hole 6 is provided. The inflow holes 3 and 4 are three rows of inflow holes 3b and 3 each having three holes in one row.
d, 3f and 4a, 4c, 4e, and the outflow holes 5 and 6 also have three rows of three outflow holes 5a and 5a.
c, 5e and 6b, 6d, 6f. Like the heat transfer holes 2, the number of rows of the inflow holes 3 and 4 and the outflow holes 5 and 6 and the number of holes in one row can be arbitrarily selected.

Three rows of inflow holes 3 and outflow holes 6 for one fluid
And three rows of inflow holes 4 and outflow holes 5 of the other fluid are alternately connected to the six rows of heat transfer holes 2. That is, 3 of one fluid
Inflow holes 3b, 3d, 3f and outflow holes 6b, 6d, 6f in rows
To communicate with every other row of heat transfer holes 2b, 2d, 2f, respectively, and the other fluid has three rows of inflow holes 4a, 4c, 4e and outflow holes 5a, 5c, 5e, and the remaining every other row of heat transfer holes 2a. ，
2c and 2e are connected to each other. Inflow holes 3, 4
In the illustrated embodiment, the outflow holes 5 and 6 are only passed to the last hole of the row of through holes 2 and are not penetrated to the side surface c or d, but the inflow holes 3 and 4 and the outflow holes 5 and 6 are Can be penetrated to the side surface c or d through the flow hole 2,
In that case, the through hole must be closed with a blind plug. The portions of the inflow holes 3 and 4 and the outflow holes 5 and 6 have a jacket structure as shown in the drawing, but nozzles may be provided in those portions.

Grooves are formed on the side surface a of the main body 1 along the three rows of heat transfer holes 2b, 2d, 2f through which one fluid flows,
Heat transfer hole closing plates 7 are fitted in the respective grooves, and the joint portions thereof are seal-welded. Further, in order to close all the heat transfer holes 2, a gasket 9 is interposed on the cover plates 8 with bolts 10. The entire side surface of the main body 1 is sealed with a cover plate 8, and a groove is formed on the side surface b of the main body 1 along the three rows of heat transfer holes 2a, 2c, 2e that allow the other fluid to flow. The heat transfer hole closing plate 7 is fitted in each groove, the joints thereof are seal-welded, and further, in order to close all the heat transfer holes 2, the cover plate 8 is attached with bolts 10 with the gasket 9 interposed therebetween. The entire circumference of the side surface is sealed with a cover plate 8.

In the heat exchanger according to the present invention, one of the liquids, that is, the heating fluid, is introduced into the inlet holes 3b, 3d,
The heat transfer holes 2b, 2d and
It is circulated in 2f and is made to flow out from the outflow holes 6b, 6d, 6f of the side surface d. The other fluid, that is, the fluid to be heated is introduced into the inflow hole 3
Inflow hole 4 formed on side surface c facing b, 3d, 3f
a, 4c, 4e, and heat transfer holes 2a, 2 in odd rows
It is circulated to the c and 2e and is made to flow out from the outflow holes 5a, 5c and 5e formed on the side surface d facing the outflow holes 6b, 6d and 6f. The heat transfer holes 2b, 2d,
The heated fluid passing through 2f and the heated fluid passing through the heat transfer holes 2a, 2c, 2e form a counterflow adjacent to each other, and an efficient heat transfer effect can be obtained. Heating by configuring this heat exchanger so that it flows in from the fluid holes in the same position in the same position, flows into the heat transfer holes in the even rows and flows in the odd number rows, and flows out from the outflow holes in the same position on the same side. The fluid and the fluid to be heated can be circulated as parallel flows adjacent to each other. Further, in the case of exchanging heat between two kinds of heated fluids for one kind of heating fluid, one kind is obtained by appropriately selecting the inflow holes 5a, 5c, 5e of the heated fluids and allowing the two heated fluids to flow in. The two heated fluids can exchange heat with each other. Further, by providing jackets or nozzles for inflow holes and outflow holes in the middle of the side surfaces c and d of the main body 1, the heating fluid or the fluid to be heated is allowed to flow in or out from the middle of the heat exchanger, and the flow rate of the fluid is reduced. The heat exchange temperature of the fluid can be changed without change.

Each heat transfer hole 2 is provided with a heat transfer promoting mechanism for increasing the heat transfer effect by generating a turbulent flow in the fluid, and the heat transfer promoting mechanism is attached to each heat transfer hole closing plate 7. A plurality of support tubes 11 and spline blades 12 attached to each support tube 11, and one end of the support tube 11 attached to the heat transfer hole closing plate 7 is supported at the other end of the heat transfer hole. A steady rest prevention member 16 is attached to prevent the pipe 11 from vibrating. Heat transfer promotion mechanism is heat transfer hole 1
Even if a fluid having a low flow velocity flows into 2, the turbulent flow can be generated in the fluid by the spline blades 12 attached to the support tube 11 inserted into the heat transfer holes 2, so that the heat transfer performance can be improved. .

A thermocouple 13 for detecting a temperature change in each heat transfer hole 2 is arranged in the support tube 11 of the heat transfer promoting mechanism, and the thermocouple 13 is taken out through the support tube 11 to the outside for corrosion. If the wall of the heat transfer hole is damaged due to another accident and the fluid flows into the adjacent heat transfer hole 2, the temperature of the fluid in that part changes, so it was installed in the support pipe 11 of the heat transfer promotion mechanism. It is possible to detect a temperature change by the thermocouple 13 and to detect at an early stage which heat transfer hole is damaged. This thermocouple 13
When this heat exchanger is used as a reactor for giving and receiving heat and causing a chemical reaction of a fluid, the mechanism that constitutes is transformed into a sampling mechanism for sampling the reaction fluid and an injection mechanism for injecting chemicals into the fluid. be able to.

In the heat exchanger according to the present invention, as shown in FIG. 7, the heating fluid outflow holes 6b, 6d and 6f of one body 1 are jacketed into the outflow holes 3b, 3d and 3f of the other body 1 through a jacket. In the same manner, the outflow holes 5a, 5c, 5e of the fluid to be heated in one body 1 are connected to the inflow holes 4a, 4 in the other body 1 in the same manner.
A plurality of main bodies 1 are connected in parallel with each other so as to communicate with c and 4e through a jacket, and a plurality of main bodies 1 are fastened and fixed through through holes 14 formed in the main body 1 through through bolts 15. As described above, a plurality of main bodies 1 are connected in parallel, and the heating fluid and the fluid to be heated are continuously circulated through the plurality of main bodies 1, so that a large heat exchanger can be configured.

[0014]

In the heat exchanger according to the present invention, heat-transfer holes for heating fluid and heat-transfer holes for heated fluid are formed by forming heat transfer holes in several rows in vertical and horizontal directions in a quadrangular prism-shaped body made of forged material by integral molding. Since they are adjacent to each other and alternately arranged in every other row, a large amount of fluid to be heated can be efficiently heat-exchanged, the structure thereof is simple, and the manufacturing cost is low and the maintenance is easy. It is easy and extremely safe, and a large heat exchanger can be constructed by combining multiple main bodies.

[Brief description of drawings]

FIG. 1 is a front view of a unit heat exchanger of the present invention.

FIG. 2 is a cross-sectional plan view taken along the line AA of FIG.

FIG. 3 is a vertical cross-sectional side view taken along the line BB of FIG.

FIG. 4 is an exploded perspective view showing an inflow direction.

FIG. 5 is an exploded perspective view shown from the outflow direction.

FIG. 6 is a perspective view of a heat transfer promotion mechanism.

FIG. 7 is a plan view of a large heat exchanger in which a plurality of main bodies are combined.

[Explanation of symbols]

 1 main body a, b, c, d side surface of main body 2 heat transfer hole 2a, 2c, 2e heat transfer hole 2b, 2d, 2f for heated fluid heat output hole for heating fluid 3, 4 inflow hole 3b, 3d, 3f heating Fluid inflow hole 4a, 4c, 4e Heated fluid inflow hole 5,6 Outflow hole 5a, 5c, 5e Heated fluid outflow hole 6b, 6d, 6f Heated fluid outflow hole 7 Heat transfer hole closing plate 8 Lid plate 9 gasket 10 bolt 11 support tube 12 spline blade 13 thermocouple 14 through hole 15 through bolt 16 steady rest prevention member

Claims (1)

[Claims] 1. A plurality of heat transfer holes extending in parallel in a longitudinal direction of the main body in a plurality of vertical and horizontal rows are formed in a main body of a quadrangular prism shape made of an integrally formed forging material, and heat transfer holes for a heating fluid are formed. The heat transfer holes for the fluid to be heated are adjacent to each other and are alternately arranged in every other row, and an inlet hole for the heated fluid is provided at one end of the side surface in the longitudinal direction of the main body and an inlet hole for the heated fluid is provided at the other end. One end of the facing side surface is provided with an outflow hole for the fluid to be heated facing the inflow hole for the heating fluid, and the other end is provided with an outflow hole for the heating fluid so as to be opposed to the inflow hole for the heating fluid. And unit heat exchanger.