JPH0753517B2 - Marine desalination apparatus and method for manufacturing water purifier body - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a marine desalination apparatus and a method of manufacturing a desalination device main body.

[0002]

2. Description of the Related Art As is well known, a marine desalination apparatus is called an immersion type as shown in FIGS. 8 and 9, and its principle is to evaporate seawater inside a desalination body (21). The seawater flows into the vessel body (22), and the seawater is heated and evaporated by circulating hot water in the evaporation pipe (24) of the evaporator (23). This evaporated vapor is introduced into the condenser barrel (25), cold water is circulated in the condenser pipe (27) of the condenser (26) to cool and condense, and is taken out as distilled water from an outlet (not shown). In the figure, (32) is a demister for separating water and water.

The water purifier main body (21) is a cylinder made of an iron plate, the upper and lower ends of which are sealed with a dish-shaped upper lid plate (28) and a bottom lid plate (29), and the inner surface of which is coated with neoprene rubber. It is rustproof.
A stainless steel evaporator barrel (22) and a condenser barrel (25) are respectively penetrated in the vertical direction of the center of the fresh water generator body (21), and inside the evaporator barrel (22). Replace the evaporator (23) with the condenser barrel (2
Each of the condensers (26) is inserted into the inside of 5) so as to be sealed with the outside.

The evaporator (23) includes a plurality of evaporation pipes (24),
It is composed of two tube plates (24 ') for holding the evaporation tube (24), an inlet side header (30) and a cover (31), and the tube plate (2
A predetermined number of evaporation pipes (24) are inserted into the tube plate (24 ') while the 4') is attached to the flange surfaces on the inlet side and the opposite side of the evaporator cylinder (22). After fixing the evaporation tube (24) inserted in the tube plate (24 ') to a predetermined position by expander processing, the header (30) is attached to the inlet side and the cover (31) is attached to the opposite side, respectively.
The evaporator cylinder (22) is sealed from the outside by being fixed to both flange surfaces of the evaporator cylinder (22) via 4 ').

A condenser (26) having the same structure as the evaporator (23)
In this state, the condenser barrel (25) is sealed from the outside through the same steps as above.

The conventional marine desalination apparatus having the above structure has the following problems. That is, the evaporation pipe (24) and the condensation pipe (27)
Is fixed inside the body of the fresh water generator (21).
It was difficult to remove the scale and the like adhering to the (24) and the condensing pipe (27), and to perform maintenance such as washing work inside the fresh water generator body (21). Further, the water purifier body (21) is made of an iron plate and coated with neoprene rubber inside, but the coating may be peeled off due to secular change and the water freshener body (21) may be damaged.
Furthermore, since the body of the fresh water generator (21) is cylindrical, there is a restriction on the installation location, which poses a problem in the layout of the ship.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention changes the evaporator and the condenser to a detachable cassette type rather than a fixed type, and downsizes the entire apparatus and facilitates manufacture. And a marine desalination apparatus that can be easily maintained.

[0008]

In order to solve the above-mentioned problems, the present invention forms two upper and lower openings on the front surface of a water freshener main body, and the inside of the water freshener main body is formed at the lower opening. The evaporator cylinder that extends to the other end is attached, and the condenser cylinder that extends to the other end in the fresh water generator body is attached to the upper opening to heat and evaporate seawater in the evaporator cylinder. The evaporator is detachably fixed, and the condenser for cooling and condensing the vapor evaporated by the evaporator is detachably fixed in the condenser barrel. Further, the water maker main body is formed into a left-right symmetrical divided body with a center line in the width direction in the front portion as a center, and the left-right symmetrical divided body is integrally sealed.

[0009]

According to the present invention, when the scale of the evaporation pipe or the condensation pipe is removed or the inside of the water purifier main body is maintained, the evaporator and the condenser are pulled out from the main body of the water purifier and the required maintenance is completed. After that, insert it again into the body of the fresh water generator and fix it.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional explanatory view of a fresh water generator body (1) of a marine fresh water generator according to the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a III-III cross sectional view of FIG. FIG. 4 is a cross-sectional explanatory view of the cassette type evaporator (2), and FIG.
-V is a sectional view, FIG. 6 is a sectional explanatory view of the same cassette type condenser (3), and FIG. 7 is a sectional view taken along line VII-VII of FIG.

The water purifier body (1) is a body (1a) and a body (1b) which are divided into left and right parts from the center of the front view shown in FIG. 2 and are integrated (for example, tightened with bolts and nuts). is doing. The raw material of the main body (1a) and the main body (1b) is FRP (other synthetic resin is also possible), and is manufactured by the injection molding method. In this way, if the fresh water generator body (1) is made of FRP, the durability is good and there is no fear of rusting due to seawater. As shown in FIGS. 2 and 3, two openings (A) and (B) are formed on the front of the fresh water generator body (1) above and below the center position in the width direction. The lower opening (B) is fitted with an evaporator cylinder (1c) having a substantially cylindrical shape and an opening (1c ') at the upper part, and the opening of the evaporator cylinder (1c) is attached.
(1c ') is formed over the entire length in the longitudinal direction. Then, a donut-shaped flange (1
d), and the other end is attached to the opposite side surface in the body of the fresh water generator (1). Similarly, the front upper opening
(A) is equipped with a substantially cylindrical condenser barrel (1e),
The upper part of this condensing cylinder (1e) is an open part over the entire length in the longitudinal direction.
(1e ') is formed. Further, a donut-shaped flange (1f) is provided on the inlet side of the condenser barrel (1e), and the other end of the doughnut-shaped flange (1f) is attached to the opposite side surface in the fresh water generator body (1).

In a space (separation cylinder (1i)) near the evaporator cylinder (1c) between the evaporator cylinder (1c) and the condenser cylinder (1e), both ends are appropriately moved downward as shown in FIG. There is a deflector (1 g) formed by bending it, and this deflector (1 g)
Covers the entire length of the evaporator barrel (1c) in the longitudinal direction. In the figure, (1h) is arranged side by side on the lower surface of the evaporator cylinder (1c) to allow seawater to flow into the evaporation cylinder (1c) from the bottom through a plurality of holes (not shown) on average. Is the seawater flow path.
Further, in the figure, (4) is an iron pedestal that supports the body of the fresh water generator (1), and is fixed to the lower part of the body of the fresh water generator (1).

As shown in FIGS. 4 and 5, the evaporator (2) includes a plurality of evaporation tubes (2a) and two tube plates (2b), (2b ') for holding the evaporation tubes (2a). And a header (2c) provided on the inlet side and a cylindrical cover (2d) provided on the opposite side. The plurality of evaporation tubes (2a) are cut into a predetermined length with an aluminum brass tube, and both ends thereof are inserted into the holes of the tube sheets (2b) and (2b ') and expanded and fixed. is there. The tube sheet is divided into an inlet tube sheet (2b) and an opposite tube sheet (2b '), and the outer diameter of the inlet tube sheet (2b) is the flange (1d) of the evaporator barrel (1c). The outer diameter of the header (2c) is also formed to be the same as the outer diameter of the header. On the outside of this header (2c),
A hot water inlet (2c ') and an outlet (2c ") are formed, a partition plate (2c''') is provided in the approximate center, and a hot water inlet pipe and an outlet pipe are provided through the inlet side tube plate (2b). It is divided into two parts, while the opposite tube plate (2
The outer diameter of b ') is slightly smaller than the inner diameter of the evaporator barrel (1c). The cover (2d) having the same diameter is fixed to the outer side of the opposite side tube plate (2b ') by an appropriate means. This cover
(2d) circulates the hot water from the hot water inlet (2c ') of the header (2c) in the cover (2d) and exits the outlet (2c ") through the evaporation pipe (2a) on the outlet side. Is refluxed.

As shown in FIGS. 6 and 7, the condenser (3) is provided with a plurality of condenser tubes (3a) and a holder for holding the condenser tubes (3a).
Tube plates (3b), (3b ') and header (3c) installed on the inlet side
And a cylindrical cover (3d) provided on the opposite side. The plurality of condensing tubes (3a) are obtained by cutting an aluminum brass tube into a predetermined length, and then both ends of the condensing tubes (3b) and (3).
It is inserted into the hole of b ') and fixed by expanding the tube. The tube sheet is divided into an inlet tube sheet (3b) and an opposite tube sheet (3b ').
The outer diameter of (3b) is formed to have the same size as the outer diameter of the flange (1f) of the condenser barrel (1e), and the outer diameter of the header (3c) is also formed to have the same diameter. On the outer surface of this header (3c), a cold water inlet (3c ') and an outlet (3c ") are formed, and a partition plate (3
c ''') is provided, and is divided into a cold water inlet pipe and an outlet pipe via the inlet side tube plate (3b). On the other hand, the outer diameter of the opposite side tube plate (3b ') is slightly smaller than the inner diameter dimension of the condenser barrel (1e). The cover (3d) having the same diameter is fixed to the outer side of the opposite side tube plate (3b ') by an appropriate means. This cover (3d)
Is cold water from the cold water inlet (3c ') of the header (3c),
It circulates in the cover (3d) and returns to the outlet (3c ") via the outlet side condensing pipe (3a).

The water purifier body (1), the evaporator (2), and the condenser (3) having the above-described structures are sealed via the evaporator barrel flange (1d) and the condenser barrel flange (1f) ( For example, tighten it with bolts and nuts) to maintain the airtightness inside the body (1) of the water generator. In the figure, (1j) is a member that reinforces the body of the fresh water generator (1).

In the above structure, seawater inlet (not shown)
The seawater flows into the separation cylinder (1i) to a predetermined water level, and passes through the seawater flow passage (1h) provided at the bottom of the evaporator cylinder (1c).
It flows into (1c). Circulating cooling water of the diesel engine (the outlet temperature is about 65 ℃ ~ 85 ℃) is used as a heat source and is introduced into the hot water inlet (2c ') of the header (2c) of the evaporator (2), and the hot water inlet pipe (2a) and cover (2d) through the outlet side evaporation pipe (2a)
Then return to the outlet (2c "). In this process the evaporator barrel
There will be two passes of heat exchange with seawater in (1c).

Since the inside of the separation cylinder (1i) is in a vacuum (700 mmHg) state by the operation of a water ejector (not shown), seawater in the evaporator cylinder (1c) evaporates at 35 ° C to 48 ° C. Therefore, the vapor generated in the evaporator cylinder (1c) hits the lower surface of the deflector (1g), separates the vapor and the liquid droplets, rises only the vapor, and is introduced into the condenser cylinder (1e).

On the other hand, the cooling seawater flowing into the cold water inlet (3c ') of the header (3c) of the condenser (3) passes through the cold water inlet pipe and circulates in the cover (3d) to circulate in the outlet side condensing pipe ( The gas is discharged from the outlet (3c ") via the discharge pipe (not shown) through the discharge port (3c") to the outside of the ship.

The vapor separated by the deflector (1g) rises and is introduced into the condenser barrel (1e), and
a) It condenses into water droplets by exchanging heat with the cooling seawater flowing inside, and stores it in a fresh water tank via an outlet (not shown).

Since the deflector (1 g) can be integrally molded as compared with the conventional demister, the production cost is low and there is no problem in performance.

[0021]

As described above, according to the present invention, the evaporator and the condenser are constructed as a detachable cassette type,
Maintenance becomes easy. Moreover, since the water maker main body is a cassette type rectangular parallelepiped type, the installation area can be reduced, which contributes to space saving.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of a body of a fresh water generator of a fresh water generator showing an embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a cross-sectional explanatory view of an evaporator of a water producing device.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is an explanatory cross-sectional view of a condenser of the water producing device.

7 is a sectional view taken along line VII-VII of FIG.

FIG. 8 is a cross-sectional explanatory view of a conventional water producing device.

9 is a sectional view taken along line IX-IX in FIG.

[Explanation of symbols]

 (1) Water freshener body (1c) Evaporator barrel (1e) Condenser barrel (2) Evaporator (3) Condenser (A) Upper opening (B) Lower opening

Claims (2)

[Claims] 1. Forming two openings (A) and (B) at the top and bottom on the front surface of the body of the fresh water generator (1), and at the lower opening (B) of the main body (1) of the fresh water generator. While installing the evaporator cylinder (1c) extending to the other end, the condenser cylinder (1e) extending to the other end in the fresh water body (1) is installed in the upper opening (A), The evaporator barrel (1c)
An evaporator (2) for heating and evaporating seawater is detachably fixed inside, and a condenser (3) for cooling and condensing the vapor evaporated by the evaporator (2) is attached and detached inside the condenser body (1e). A marine desalination device characterized by being fixed freely. 2. A method of manufacturing a fresh water generator body (1) for a marine fresh water producing apparatus, wherein the fresh water generator body (1) is equipped with an evaporator barrel (1c) and a condenser barrel (1e), respectively. Is a split body that is symmetrical about the center line in the width direction in the front portion, and the split body that is symmetrically formed is integrally sealed to form a water maker main body of the marine fresh water generator. .