JP2006322646A - Heat exchanger group support tool, filler unit using it, and replacement and maintenance method for closed type heat exchanger in filler unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably support a straight pipe part in a heat exchanger by removably attaching spacers assembled in a vertical hierarchical state to a strut of a cooling tower via a common frame. <P>SOLUTION: A shape material 15 attached to the sequentially uppermost closed type heat exchanger is slid in its longitudinal direction with respect to a shape material 15 attached to an adjacent lower closed type heat exchanger by latching of a recessed part 15b and a flat part 15a, and it is drawn to a cooling tower exterior from an outside air inlet side. Scales, slime or the like adhered to the closed type heat exchanger is removed, and it is replaced by a new one when it is damaged. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to a heat exchanger group support, a filler unit using the same, and a replacement or maintenance method for a hermetic heat exchanger in the filler unit.

This type of filler unit has been developed and manufactured in many structures, and the applicant manufactures a sealed heat exchanger having the following structure.
When manufacturing a cooling coil that connects a straight pipe with a U-shaped pipe having a U-shaped curved portion and forms a circulating cooling water channel meandering in a plane direction, the ends of adjacent straight pipes are connected to each other by the U-shape. Prior to brazing with pipes, a U-shaped pipe spacer as a spacer is once passed through these pipes, the pipe spacer is brought to the center of the pipe group, and the ends of adjacent pipes are connected to each other. Brazing with a U-shaped tube avoids thermal deformation of the tube spacer during brazing.
The tube spacer thus brazed is spotted with a receiving portion made of a channel having a substantially U-shaped cross section (mold material) that accommodates and holds the tube spacer on the inner surface of each side plate with its opening facing inward. The pipe spacers of the hermetic heat exchanger are opposed to each other in each receiving part, and are inserted so as to be slidable in the longitudinal direction in the longitudinal direction, and then the pair of side plates are cooled. The heat exchanger is attached to the cooling tower by bolting to the tower frame.

The closed-type heat exchanger for the cooling tower has a large number of parts, and the side plate is side spot welded to the side plate in the assembly, and the side plate is bolted to the frame of the cooling tower. It tends to be expensive and costly.
In order to further improve the problem, the present applicant has further researched and installed an electrically insulating tube spacer between a pair of vertical side plates that can be placed opposite to both sides of the outside air intake of the cooling tower. The cooling tower heat exchange is made up of a plurality of hermetic cooling tower heat exchangers arranged at intervals in the vertical direction. In the body,
The tube spacer has a length corresponding to the depth dimension of the heat exchanger, and a long hole into which each bending portion of the heat exchanger can be inserted is provided at an interval from the long hole. A ring-like stopper that keeps the curved portion protruding to the side plate from coming out of the elongated hole is hooked to the outer periphery of the apex portion of at least two curved portions directed to each tube spacer for each meandering cooling coil, and fixed. And a plurality of the heat exchangers are supported and piped between a pair of pipe spacers that can be arranged at intervals in the width direction of the outside air intake of the cooling tower,
Each of the tube spacers is slidable with respect to each side plate along the longitudinal direction thereof, and is detachably provided, and the side plate can be engaged with a column of the cooling tower. And obtained a temporary result (reference document JP 2004-012034 A FIG. 6).
JP 2004-012034 A

However, in the heat exchanger for a cooling tower having the above-described configuration, the ring-like stopper may come off due to vibration or the like, and further downsizing of the side plate is desired.
The object of the present invention is to solve the above-mentioned problems, reduce the number of parts, simplify the structure, and stably support the straight pipe portion in several heat exchangers.
Another object of the present invention is to enable the sprayed water to be sprayed also to the vent pipe portions of several heat exchangers that are arranged in a hierarchical manner so that the indirect cooling of the circulating cooling water can be efficiently performed.
A further object of the present invention is to enable several heat exchangers to be individually pulled out and replaced from the heat exchange tower main body, and to perform maintenance easily by one person instead of two persons.

In order to solve the above-mentioned problems, the specific invention is that the sealed heat exchanger is piped adjacently in at least two or more layers in the upper and lower layers, and the outer peripheral surfaces of the straight pipe portions of the sealed heat exchanger that are vertically adjacent to each other are In a heat exchanger group support that supports a heat exchanger group adjacent to each other,
The support includes at least a pair of spacers that support the vicinity of the connection between the straight pipe portion and the vent pipe portion of each hermetic heat exchanger,
Each spacer is made of a mold having an I-shaped cross section, and the above-mentioned molds that overlap vertically can be attached to and detached from each other, and are assembled so as to be slidable in the longitudinal direction of these molds. The heat exchanger group supporter is detachably attached to the support column of the heat exchange tower through the heat exchanger.
In order to solve the above problems, the related invention is composed of a hermetic heat exchanger and a synthetic resin corrugated filler, and a plurality of the fillers are arranged in parallel at intervals, and the hermetically sealed type The plurality of straight pipe portions in the heat exchanger are arranged as a filler unit arranged in parallel to each other, and the sprayed water sprayed on each of the filler units is in direct contact with an external air stream and sprayed with latent heat of vaporization by evaporation. The cooling spray water is sprayed on the sealed heat exchanger below, and the circulating cooling water flowing in the sealed heat exchanger is indirectly cooled. A filler unit,
The hermetic heat exchanger in the filler unit is piped adjacent to at least two or more layers in the upper and lower layers, and the straight pipe part of one of the hermetic heat exchangers among the upper and lower adjacent heat exchangers is It is diametrical with respect to the straight pipe part in the other layer sealed heat exchanger and is displaced in the plane direction or arranged in the middle part between the straight pipe parts in the other layer sealed heat exchanger. And the outer peripheral surfaces of the straight pipe portions of the upper and lower adjacent heat exchangers are adjacent to each other,
At least a pair of spacers that support the vicinity of the connecting portion between the straight pipe portion and the vent pipe portion of each heat exchange coil are each made of a mold material having an I-shaped cross section, and the mold materials that overlap vertically can be attached to and detached from each other. The spacers that are assembled so as to be slidable with respect to each other and that are assembled in the upper and lower layers are detachably attached to the column of the cooling tower via a common mount.
In order to solve the above-mentioned problem, a related invention is the method for exchanging or maintaining the hermetic heat exchanger in the filler unit according to claim 4, 5 or 6,
Release the connection of the heat exchange header corresponding to the supply end of each of the hermetic heat exchangers and the discharge end of each of the hermetic heat exchangers, and in this state, attach to the uppermost hermetic heat exchanger. The mold material attached to the adjacent lower-layer sealed heat exchanger is slid in the longitudinal direction, drawn out from the outside air intake to the outside of the heat exchange tower, and exchange of the sealed heat exchanger or Maintenance or replacement of the hermetic heat exchanger is characterized by performing maintenance.

In the present invention, the pair of spacers that support the vicinity of the connecting portion between the straight pipe portion and the vent pipe portion of each heat exchange coil are each made of a mold having an I-shaped cross section, and the molds that overlap vertically can be attached to and detached from each other. The spacers that are assembled to be slidable with respect to each other in the longitudinal direction, and these vertically assembled spacers are detachably attached to the column of the cooling tower via a common base, thereby reducing the number of parts and improving the structure. This simplifies and can stably support the straight pipe portion in several heat exchangers.
Furthermore, the sprayed water can be sprayed on the vent pipes of several heat exchangers arranged in a hierarchical manner, and the indirect cooling of the circulating cooling water can be efficiently performed.
In addition, several heat exchangers can be pulled out and replaced independently from the cooling tower body, and maintenance can be simplified by one person instead of two.

In the invention of claim 5, in addition to the above-described effect, several layers of the sealed heat exchanger, particularly the straight pipe portion thereof, in one filler unit can be obtained by improving the piping of the sealed heat exchanger. And the contact rate of spray water can be increased.
Furthermore, in addition to the above effects, sufficient contact area and contact time between the spray water flowing on the filler and the external airflow are secured, and the temperature of the spray water in one filler unit is changed to several sealed heat exchanges. It is possible to cool to a temperature sufficient to sufficiently cool the straight pipe portion of the vessel.
Therefore, when trying to obtain the same heat exchange performance as the conventional one with the difference between the inlet temperature and the outlet temperature of the heat exchange tower, the heat exchange tower can be downsized and the number of pipes can be reduced. Can be omitted and the cost can be reduced.
Moreover, in the case of the same height as the conventional heat exchange tower, the heat exchange performance of the heat exchange tower can be enhanced.

Embodiment 1
This form is a typical embodiment of the heat exchanger group support according to claims 1, 2, and 3 and the filler unit according to claims 4, 5, and 6.
In FIG. 1A, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, the heat exchange tower 10 has the packing material units A loaded in the upper and lower layers in the machine frame. The filler unit A includes a hermetic heat exchanger 11 and a corrugated filler 13 made of synthetic resin, and a plurality of the fillers 13 are arranged in parallel at intervals in the width direction of the outside air inlet 14. The plurality of straight pipe portions in each of the hermetic heat exchangers 11 are arranged in parallel to each other and substantially parallel to the width direction of the outside air intake port 14.
The sprayed water sprayed on the filler unit A is brought into direct contact with the external airflow, and this sprayed water is cooled by the latent heat of vaporization caused by the evaporation, and the cooled sprayed water is directly connected to the hermetic heat exchanger 11 below. The sealed heat exchange tower 10 that is supplied to the pipe section 12 and indirectly cools the circulating cooling water flowing in the sealed heat exchanger 11 is a cross-flow cooling tower.
The heating tower is the same as the present invention.

The hermetic heat exchanger 11 in the filler unit A has at least two layers, and in the illustrated case, four layers, which are piped adjacent to each other in the upper and lower layers, and among the upper and lower adjacent heat exchangers 11, The straight pipe portion 12 of the hermetic heat exchanger 11 is arranged in the middle of the gap of the straight pipe portion 12 in the lower hermetic heat exchanger 11. In other words, the straight pipe portion 12 in the lower sealed heat exchanger 11 is positioned directly below the adjacent straight pipe portions 12 in the upper sealed heat exchanger 11 in the sealed heat exchanger 11. And the outer peripheral surfaces of the straight pipe portions 12 of the adjacent hermetic heat exchangers 11 are adjacent to each other, and the hermetic heat exchangers 11 are piped in the upper and lower layers.
In the example shown in the figure, the pipe pitch of the straight pipe portion 12 is approximately twice as large as these diameters. Therefore, the gap dimension of each straight pipe portion 12 is substantially equal to the diameter dimension of the straight pipe portion 12 and is viewed from directly above. In this case, the water that is arranged in the lower straight pipe portion 12 between the lower straight pipe portions 12 and is sprayed always comes into contact with either of the upper and lower straight pipe portions 12. Of course, part of the flowing water that has come into contact with the upper straight pipe portion 12 also comes into contact with the lower straight pipe portion 12.

In the above example, the straight pipe portion 12 in the lower sealed heat exchanger 11 is located directly below the adjacent straight pipe portions 12 in the upper sealed heat exchanger 11, but it is not limited directly below. However, a mode in which the straight pipe portion 12 of one sealed heat exchanger 11 is displaced in a staggered manner with respect to the straight pipe portion 12 in the other sealed heat exchanger 11 is also within the technical scope of the present invention.
The filler 13 in the filler unit A corresponds to the four-layer sealed heat exchanger 11 and is set to a size and shape sufficient to obtain the spray water temperature.

Each of the hermetic heat exchangers 11 is provided so as to be extractable from the outside air inlet 14 side with respect to the hermetic heat exchange tower 10, and directly in the vertical direction with respect to the machine frame of the heat exchange tower 10. Hierarchical support at a predetermined pitch.
That is, the pair of spacers S that support the vicinity of the connection portion between the straight pipe portion 12 and the vent pipe portion U of each hermetic heat exchanger 11 are each made of a mold material 15 having an I-shaped cross section, and the mold materials 15 that overlap vertically are attached to and detached from each other. The spacers S, which are assembled so as to be slidable in the longitudinal direction of the mold member 15 and are assembled in a hierarchy above and below, are arranged in a cooling tower which is a kind of the above-described sealed heat exchange tower 10 through a common base 16. The column 17 is removably attached.
The mold material 15 is a mold material made of a synthetic resin, and the upper edge of the mold material 15 is a flat portion 15a and has a kind of dovetail shape, and the lower end edge is formed with a recess 15b to form a kind of dovetail groove, The upper and lower mold members 15 are slidable in the longitudinal direction by the engagement between the concave portion 15b and the flat portion 15a. That is, the upper and lower mold members 15 are not relatively displaced in the transverse direction after assembly. The positional relationship between the above-mentioned dovetail shape and dovetail groove does not change even if they are interchanged as the mold material 15.
The hermetic heat exchanger 11 is loaded below the upper water tank which is a kind of watering device of the heat exchange tower 10.

Of the sealed heat exchangers 11 arranged in a hierarchical manner as described above, the mold member 15 attached to the lowermost sealed heat exchanger 11 has a column 17 of the sealed heat exchange tower 10. A flange plate 18 detachably attached to the frame 16 is integrally provided as the gantry 16. Preferably, the mold material 15 is made of synthetic resin, and each hermetic heat exchanger 11 is made of metal.
The spacer S is provided with a substantially horizontal long hole 20 at an interval, and the adjacent straight pipe portions 12 of each hermetic heat exchanger 11 are not parallel to each other between the pair of left and right spacers S in plan view. Inclined piping. The connecting portions of the straight pipe portion 12 and the vent pipe portion U are fixed to and supported by inner peripheral edges in the vicinity of the end portions of the adjacent long holes 20, respectively, and the supply end of the hermetic heat exchanger 11 and the hermetic type The discharge end of the heat exchanger 11 is located in the mixing chamber of the main body of the heat exchange tower 10, and the supply end of each sealed heat exchanger 11 is positioned higher than the discharge end of each sealed heat exchanger 11, The flow path of the circulating cooling water forms a path from the supply end of the hermetic heat exchanger 11 to the discharge end of each hermetic heat exchanger 11 through a plurality of straight pipe sections having a gradient.

A flange for connection is attached to the supply end of each sealed heat exchanger 11 and the discharge end of each sealed heat exchanger 11, and these flanges correspond to the flanges of the corresponding heat exchange headers. The supply end of the sealed heat exchanger 11 and the discharge end of each of the sealed heat exchangers 11 are bolted to the corresponding heat exchange headers via flanges.
In addition to the pair of spacers S, a spacer S having the same shape is disposed over the central portion of the straight pipe portions 12 in the sealed heat exchanger 11 of each layer, and suppresses the deflection and vibration of the straight pipe portions 12. There is also (not shown).

  The operation of this embodiment will be described. The sprayed water sprayed on the filler unit A is in direct contact with the external air stream, the sprayed water is cooled by the latent heat of vaporization by evaporation, and the cooled sprayed water is cooled below the sealed heat Supplyed to the straight pipe portion 12 of the exchanger 11, the circulating cooling water flowing in the hermetic heat exchanger 11 is indirectly cooled.

At this time, in each of the filler units A shown in FIG. 1 (a), the sprayed water sprayed on the filler 13 is directly brought into contact with the external airflow, and the sprayed water is cooled by the latent heat of vaporization by evaporation. The sprayed water is sprayed on the straight pipe part of the hermetic heat exchanger below, and the circulating cooling water flowing in the hermetic heat exchanger 11 is indirectly cooled.
The hermetic heat exchanger 11 in the filler unit A is made up of four layers, and is piped adjacent to the upper and lower layers, and one of the upper and lower adjacent heat exchangers 11 The straight pipe portion 12 is positioned at an intermediate portion between the straight pipe portions 12 in the sealed heat exchanger 11 of the other layer, and the sprayed water is caused to flow down to the filler 13 in the filler unit A. The sprayed water cooled by the direct contact and the latent heat action due to evaporation is uniformly sprayed on the four-layer sealed heat exchanger 11, and the circulating cooling water flowing in these sealed heat exchangers 11 is indirectly shared. Cooling.

In order to replace or maintain the sealed heat exchanger 11, the supply end of each sealed heat exchanger 11 and the discharge end of each sealed heat exchanger 11 are removed from the corresponding heat exchange headers, In this state, the uppermost packing material 13 is taken out from the hermetic heat exchanger 10 and the mold member 15 attached to the uppermost hermetic heat exchanger 11 is sealed in the adjacent lower hermetic heat exchanger. The mold 15 attached to the vessel 11 is slid in the longitudinal direction by engaging with the concave portion 15b and the flat portion 15a, drawn out from the outside air intake port 14 to the outside of the heat exchange tower 10, and the sealed type The scale, slime, etc. adhering to the heat exchanger 11 are removed, and if damaged, they are replaced with new ones.
Such an operation is performed on the hermetic heat exchanger 11 of each layer, and the replacement and maintenance can be performed by one person.
Finally, the filler 13 on the lowermost hermetic heat exchanger 11 is removed, and the mold member 15 attached to the lowermost hermetic heat exchanger 11 is fixed to the column, and the lowermost hermetic type is sealed. The heat exchanger 11 is cleaned (corresponding to a typical embodiment of the invention according to claim 7 or 8).

Embodiment 2
Configurations and operations different from those of the first embodiment are as follows.
In this embodiment shown in FIG. 1 (b), each filler unit A is composed of a multi-layer sealed heat exchanger 11 on the upper side and a filler 13 on the lower side, and is first sprayed from the upper water tank. First, the sprayed water is sprayed on the straight pipe portion 12 of the multilayer sealed heat exchanger 11 in the uppermost filler unit A, and all the sprayed water is at least once in any of the straight pipe portions of the upper and lower layers. In the case of the four layers shown in the figure, at least two layers, actually at least three times, contact with any straight pipe portion 12, and then flow into the lower filler 13, direct contact with the external air flow accompanying this flow, and evaporation The spray water is cooled by the latent heat action.
Such an action is repeated in each stage of the filler unit A.
Filler unit A located in the uppermost layer is made to spray sprinkled water on the filler 13 in the lowermost filler unit A, and the sprayed water cooled by the direct contact with the external air flow accompanying this flow and the latent heat action by evaporation. Are spread on the straight pipe portions 12 of the four-layer hermetic heat exchanger 11.
In the first and second embodiments, the density of the straight pipe portion 12 can be easily reduced in the vertical direction and the interval, and an improvement in the heat exchange function can be obtained. Divided into laminar flow.
In each of the embodiments, the cross-flow cooling tower is described, but the counter-flow cooling tower is the same as the present invention.
The two embodiments are the same as the heating tower as the present invention.

(A). 1 is a schematic side view of a heat exchange tower according to Embodiment 1. FIG. (B). 6 is a schematic side view of a heat exchange tower according to Embodiment 2. FIG. It is an expansion perspective view which shows the relationship between a heat exchanger and a spacer. It is an enlarged side view of a heat exchanger. It is the schematic which shows the arrangement | sequence of the heat exchanger part in FIG. It is the A section enlarged view in FIG.

Explanation of symbols

11 Sealed heat exchanger 12 Straight pipe part 13 Filler 15 Mold material

Claims (8)

Closed heat exchangers are piped adjacent to each other in at least two or more layers in the upper and lower layers, and the outer peripheral surfaces of the straight pipe portions of the upper and lower adjacent heat exchangers support a heat exchanger group adjacent to each other. In the heat exchanger group support
The support includes at least a pair of spacers that support the vicinity of the connection between the straight pipe portion and the vent pipe portion of each hermetic heat exchanger,
Each spacer is made of a mold having an I-shaped cross section, and the above-mentioned molds that overlap vertically can be attached to and detached from each other, and are assembled so as to be slidable in the longitudinal direction of these molds. A heat exchanger group support, which is detachably attached to the support column of the heat exchange tower via   All the mold materials are mold materials made of an entirely synthetic resin having the same cross-sectional shape, and one of the upper and lower joint surfaces of these mold materials is a flat portion or a male protrusion, and the other is a recess or a female groove that fits into this. 2. The heat exchanger group supporter according to 1, wherein the mold material is slidable in the longitudinal direction by mutual engagement.   A flange that is detachably attached to a column of the heat exchange tower is attached to the mold member attached to the hermetic heat exchanger in the lowermost layer among the hermetic heat exchangers arranged in a hierarchical manner as described above. The heat exchanger group support according to 1 or 2, wherein a plate is integrally provided as the frame.   The heat exchanger group support device according to claim 1, 2 or 3, and at least two or more layers of the hermetic heat exchanger are supported by pipes adjacent to each other in the upper and lower layers, and the straight pipes of the hermetic heat exchangers adjacent to each other vertically. The filler unit is characterized in that the outer peripheral surfaces of the portions are located adjacent to each other. A hermetic heat exchanger and a corrugated filler made of synthetic resin, and a plurality of the fillers are arranged in parallel at intervals, and the plurality of straight pipe portions in the hermetic heat exchanger are mutually connected. The filler units are arranged in parallel, and the sprayed water sprayed on each of the filler units is in direct contact with the external airflow to cool the sprayed water with the latent heat of vaporization by evaporation, and the cooled sprayed water is The filler unit used in a sealed heat exchange tower that is sprayed on the sealed heat exchanger and indirectly cools the circulating cooling water flowing in the sealed heat exchanger,
The hermetic heat exchanger in the filler unit is piped adjacent to at least two or more layers in the upper and lower layers, and the straight pipe part of one of the hermetic heat exchangers among the upper and lower adjacent heat exchangers is It is diametrical with respect to the straight pipe portion in the other layer of the sealed heat exchanger, is displaced in the plane direction, or is arranged in the middle between the straight pipe portions in the other layer of the sealed heat exchanger, While the outer peripheral surfaces of the straight pipe portions of the upper and lower adjacent heat exchangers are adjacent to each other,
At least a pair of spacers supporting the vicinity of the connecting portion between the straight pipe portion and the vent pipe portion of each hermetic heat exchanger is made of a mold material having an I-shaped cross section. A filler unit characterized in that it is assembled so as to be slidable in the longitudinal direction, and the spacers assembled in a hierarchical manner are detachably attached to a column of a heat exchange tower via a common base.   The spacer has a substantially horizontal elongated hole at an interval, and the adjacent straight pipe portion of each heat exchange coil is piped between the pair of left and right spacers so as to be non-parallel and inclined in plan view. The connecting part of the straight pipe part and the vent pipe part are fixed to and supported by the inner peripheral edge in the vicinity of the end part of the elongated hole, and the supply end of the hermetic heat exchanger and the discharge of the hermetic heat exchanger The end is located in the mixing chamber of the heat exchange tower body, the supply end of the hermetic heat exchanger is located higher than the discharge end of the hermetic heat exchanger, and the flow path of the circulating cooling water is the hermetic heat 6. The filler unit according to claim 5, wherein a path is formed from a supply end of the exchanger to a discharge end of the hermetic heat exchanger through a plurality of inclined straight pipe portions. In the method of performing exchange or maintenance of the hermetic heat exchanger in the filler unit according to claim 4, 5 or 6,
Release the connection of the heat exchange header corresponding to the supply end of each of the hermetic heat exchangers and the discharge end of each of the hermetic heat exchangers, and in this state, attach to the uppermost hermetic heat exchanger. The mold material attached to the adjacent lower-layer sealed heat exchanger is slid in the longitudinal direction, drawn out from the outside air intake to the outside of the heat exchange tower, and exchange of the sealed heat exchanger or Maintenance or replacement method for the hermetic heat exchanger, wherein maintenance is performed. In the method of performing exchange or maintenance of the hermetic heat exchanger in the filler unit according to claim 5 or 6,
The connection of the heat exchange header corresponding to the supply end of each of the hermetic heat exchangers and the discharge end of each of the hermetic heat exchangers is released, and in this state, the uppermost filler is removed, and in this state, the uppermost filler is removed. The mold member attached to the upper closed type heat exchanger is slid in the longitudinal direction with respect to the mold member attached to the adjacent lower closed heat exchanger, and the outside air intake port is moved to the outside of the heat exchange tower. Pull out, replace or maintain it,
Such an operation is sequentially performed on the sealed heat exchanger of each layer, and finally the filler is removed on the sealed heat exchanger of the lowermost layer and the sealed heat exchanger of the lowermost layer is mounted. The method for replacing or maintaining the hermetic heat exchanger in the filler unit, wherein the mold member is fixed to the support column and removed to clean the lowermost hermetic heat exchanger.

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