JP2927384B2 - Cooler with built-in discharge gutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooler with a built-in discharge gutter for cooling a diesel engine or a gear reducer in a pump facility or the like.

[0002]

2. Description of the Related Art Conventionally, in large pump equipment, a discharge channel of a pump is constructed of concrete, and the discharge channel is provided with cooling for cooling a diesel engine or a gear reducer used for driving the pump. A vessel is provided. The structure is, for example, as shown in FIGS. 4 and 5, the discharge water channel 1 has a rectangular cross section, and a pair of left and right coolers 4 is disposed in a concave portion 3 provided on both side walls 2 of the discharge water channel 1. This cooler 4 has a pair of header pipes 5 before and after along the flow direction of the discharge water channel 1, and a plurality of cooling pipes 6 are provided between both header pipes 5. The cooler 4 is configured such that the coolant water flows in the cooling pipes 6 alternately zigzag through the header pipes 5 inside the cooler 4. The cooler 4 is discharged from the upper lid 7 and is fixed to the ceiling 8 of the water channel 1.

[0003]

However, in the above-mentioned conventional configuration, since the cooler 4 is present only on both sides of the discharge water channel 1, the distance between the surfaces becomes long, and in order to secure a predetermined cooling capacity. However, there is a problem that the apparatus becomes large.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a cooler with a built-in discharge gutter tube, which can reduce the distance between surfaces and make the apparatus compact.

[0005]

In order to solve the above-mentioned problems, a cooler with a built-in discharge gutter tube according to the present invention is a cooler interposed in the middle of a discharge gutter tube having a square cross section, A pair of left and right side heat exchange portions fitted into recesses formed in the side wall surface of the discharge gutter tube, an upper heat exchange portion arranged at an upper position of the flow path in the discharge gutter tube so as to face the bottom surface, and a discharge gutter It is placed in the opening formed in the ceiling part of the pipe, and the pedestal that forms the insertion port of each heat exchange part, and placed so as to cover each insertion port of the pedestal, and the side heat exchange part and the top heat exchange part are individually Bei example a lid portion for fixing and supporting the heat exchange of the three surfaces surrounding the flow path of the discharge gutter pipe
Surfaces and connect the left and right side heat exchange sections in series.
This is a continuous configuration.

[0006]

According to the above configuration, since the heat exchange portions are arranged on both side surfaces and the upper surface of the flow path of the discharge gutter pipe, the heat exchange surfaces in the cooler become three, and the distance between the surfaces can be reduced. Since the heat exchange efficiency is improved, the size of the apparatus can be reduced.

The side heat exchangers located on both side walls of the discharge gutter tube and the upper heat exchanger located at the upper position of the flow path are individually fixed to the respective lids to form a unit. In each case, each heat exchange unit can be attached and detached from the insertion port in units without removing the gantry, and the handling is easy.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, a cooler 21 is interposed in the middle of a discharge gutter pipe 22 of a large-sized pump, and a coolant water and a discharge gutter pipe for cooling a diesel engine or a gear reducer used for driving the pump. The heat exchange with the flowing water flowing through 22 is performed.

The discharge gutter tube 22 is made of a concrete rectangular body, and has a rectangular channel cross section. A recess 22b is formed in the side wall surface 22a in the middle of the discharge gutter tube 22, and an opening 22d is formed in the ceiling 22c. The cooler 21 is disposed by being inserted into the flow path of the discharge gutter tube 22 from the opening 22d of the ceiling portion 22c.

A plurality of coolers 21 are provided along the axial direction of the discharge gutter tube 22 and communicate in series by a configuration described later. In the present embodiment, a case where there are two coolers 21 will be described. A gantry 23 is arranged in an opening 22d of a ceiling portion 22c of the discharge gutter tube 22, and the gantry 23 defines a plurality of insertion ports 24 by its frame.

Each of the coolers 21 is provided with a side heat exchange portion 25a fitted in a concave portion 22b of a left and right side wall surface 22a of the discharge gutter tube 22,
25b, and a pair of upper heat exchange units 26a and 26b arranged at an upper position of the flow path of the discharge gutter tube 22. Each of the heat exchange units 25a, 25b, 26a and 26b includes a plurality of heat transfer tubes 2a.
7.

Further, each of the heat exchange sections 25a, 25b, 26
The heat transfer tubes 27a and 26b communicate with the header tubes 28a and 28b at both ends, respectively.
28b is provided with joint pipes 29a and 29b, respectively. Further, a plurality of lids 30 are provided so as to cover the respective insertion openings 24 of the gantry 23, and the respective lids 30 individually fix and support the heat exchange units 25a, 25b, 26a, 26b, respectively.

A pair of coolers 21 are arranged along the flow direction of the discharge gutter tube 22, and the two coolers 21 are joint pipes 29a in which the heat exchange portions 25a, 25b, 26a, 26b face each other. , 29b. And one joint pipe 29a of the side heat exchange part 25a arranged on one side of the cooler 21 located on the upstream side forms an inflow port,
One joint pipe 29 of the side heat exchange part 25b located on the other side
a is an outlet. Further, the side heat exchange portions 25a and 25b of the cooler 21 located on the downstream side are connected to both the joint pipes 2.
They communicate with each other via a connecting pipe 31 that connects 9b.

One joint pipe 29a of the upper heat exchange section 26a on one side of the cooler 21 located on the upstream side forms an inflow port, and one joint pipe 29 of the upper heat exchange section 26b on the other side.
a is an outlet. The upper heat exchange portions 26a and 26b of the cooler 21 located on the downstream side are connected to both joint pipes 2.
9b are connected via a connecting pipe 32.

The operation of the above configuration will be described below.
The refrigerant 33 flows into the one side heat exchange part 25a from the joint pipe 29a of the cooler 21 on the upstream side, passes through the joint pipe 29b, and flows from the joint pipe 29a of the cooler 21 on the downstream side to one side heat. It flows into the exchange part 25a. The refrigerant 33 is supplied from the side heat exchange part 25a on one side of the cooler 21 on the downstream side to the joint pipe 29b.
And flows into the other side heat exchange part 25b through the connecting pipe 31 and flows into the other side heat exchange part 25b from the joint pipe 29b of the cooler 21 on the upstream side through the joint pipe 29a. Flows out to the next system from 29a.

The refrigerant 33 flows into the upper heat exchanger 26a on one side of the cooler 21 on the upstream side from the joint pipe 29a, passes through the joint pipe 29b, and exchanges heat on the upper side of the cooler 21 on the downstream side. It flows into the part 26a from the joint pipe 29a. The refrigerant 33 is supplied to the upper heat exchange section 26 on one side of the cooler 21 on the downstream side.
a flows into the upper heat exchange section 26b on the other side through the joint pipe 29b and the connecting pipe 32, and flows into the upper heat exchange section 26b on the other side from the joint pipe 29b of the cooler 21 on the upstream side through the joint pipe 29a. Flows out of the joint pipe 29a to the next system.

During this time, the refrigerant 33 is supplied to each cooler 2
The heat exchange section 25 exchanges heat with the flowing water 34 flowing through the discharge gutter pipe 22 through the heat transfer pipe 27 of each of the heat exchange sections 25a, 25b, 26a, 26b, and radiates its own heat into the flowing water 34.

Therefore, the heat exchange portions 25a, 25b, 26
Since the heat exchangers a and 26b are arranged, the heat exchange surface of the cooler 21 becomes three, the distance between the surfaces can be reduced, and the heat exchange efficiency is improved, so that the apparatus can be made more compact.

The side heat exchanging portions 25a and 25b located on both side wall surfaces 22a of the discharge gutter tube 22 and the upper heat exchanging portions 26a and 26b arranged at the upper position of the flow passage are individually fixed to the lid portion 30. The heat exchange units 25a, 25b, 26a, and 26b can be attached and detached from the insertion port 24 in units without removing the gantry 23 at the time of maintenance or the like, so that handling is easy. .

[0020]

As described above, according to the present invention, by disposing the heat exchange portions on both side surfaces and the upper surface of the flow path of the discharge gutter tube, the heat exchange surface in the cooler becomes three, and Since the efficiency is improved, the distance between the surfaces can be reduced and the device can be made compact. By separately fixing the side heat exchange section and the upper heat exchange section to the lid to form a unit, the work at the time of maintenance is facilitated.

[Brief description of the drawings]

FIG. 1 is a plan view of a cooler showing one embodiment of the present invention.

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

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is a longitudinal sectional view of a conventional cooler.

FIG. 5 is a cross-sectional view of a conventional cooler.

[Explanation of symbols]

 Reference Signs List 21 cooler 22 discharge gutter tube 23 gantry 24 insertion port 25a, 25b side heat exchange unit 26a, 26b upper heat exchange unit 27 heat transfer tube 30 cover

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F01P 3/20 F28F 9/00 F02B 63/06

Claims (1)

(57) [Claims] 1. A cooler interposed in the middle of a discharge gutter tube having a rectangular cross section, and a pair of left and right side heat exchange portions fitted into a concave portion formed on a side wall surface of the discharge gutter tube. An upper heat exchange section disposed at an upper position of the flow path in the discharge gutter tube so as to face the bottom surface, and a pedestal arranged at an opening formed at the ceiling portion of the discharge gutter pipe and forming an insertion port for each heat exchange section. , and placed over the respective insertion openings of the frame, e Bei a lid portion for individually fixedly supporting the respective side heat exchange portion and the upper heat exchanger, the discharge trough
While forming three heat exchange surfaces surrounding the flow path of the pipe,
A cooler with a built-in discharge gutter, wherein the left and right side heat exchange sections are connected in series .