JP3018116U - Liquefied gas storage tank with evaporator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a liquefied gas storage tank that is easy to transport and install. [Configuration] Multiple internal tanks that store different liquefied gases
Storage tank for liquefied gas composed of an insulated double tank with (3)
A number of vaporization units (5) corresponding to the number of inner tanks (3) are arranged along with the outer tanks (2) of (1). A heat exchanger (7) in which a pipe (14) formed by projecting heat absorbing fins (13) on each vaporization unit (5) is formed in a meandering manner with their respective axial cores located in the same plane.
And a pressure reducing valve (9) arranged in the gas extraction passage (8) from the heat exchanger (7), and a gas outlet valve arranged at the tip of the gas extraction passage (8)
(10), a safety valve (11) arranged upstream of the pressure reducing valve (9) in the gas outlet (8), and a pressure reducing valve (9) in the gas outlet (8)
And a pressure gauge (12) disposed between the gas outlet valve (11).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquefied gas storage tank for storing liquefied gas to be consumed in a gaseous state, and in particular, a liquefied gas storage tank in which an inner tank storing different kinds of liquefied gas is housed in the same outer tank. The present invention provides a liquefied gas storage tank that integrally holds an evaporator that evaporates the liquefied gas that has been drawn out.

[0002]

[Prior art]

 In a liquefied gas storage tank that stores liquefied gas that is consumed in a gaseous state, if it is discharged from the storage tank in the gas state, vaporization in the tank will not be in time for consumption, so it is generally derived from the storage tank in the liquid state. However, a vaporization heat exchanger is arranged in the discharge path so that the liquefied gas is vaporized by the heat input in the heat exchanger.

A conventional heat exchanger has a box-shaped block structure in which pipes having protruding heat-absorbing fins are vertically arranged in parallel in a plurality of columns and a plurality of rows, and the pipes are sequentially connected by connecting pipes. It was installed separately from the liquefied gas storage tank.

[0004]

[Problems to be solved by the device]

 In the conventional heat exchanger, since the heat exchanger is formed into a box-shaped block body having a large width and a large thickness, the vaporization unit including the heat exchanger and the liquefied gas storage tank are formed separately. However, since it had to be assembled on site, there was a problem that the installation area as a liquefied gas storage facility would be large and the workability during transportation and workability during installation work would be poor. Moreover, since this heat exchanger must be provided for each contained gas, when a plurality of inner tanks are accommodated in one outer tank, one heat exchanger for one liquefied gas storage tank is required. Since multiple heat exchangers must be arranged, there is a problem that the installation area as a liquefied gas storage facility becomes larger, and the workability during transportation and the workability during installation work become worse. It was In view of such a point, the present invention has an object to provide a liquefied gas storage tank that stores a plurality of types of liquefied gas in an interior that is easy to transport and install.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention arranges a plurality of vaporization units along with an outer tank of a storage tank that stores a plurality of types of liquefied gas inside, and each vaporization unit is provided with a heat-absorption fin. A heat exchanger formed in a meandering manner with each axis of the pipe formed in the same plane, a pressure reducing valve arranged in the gas extraction passage from the heat exchanger, and a gas arranged in the tip of the gas extraction passage. It is composed of an outlet valve, a safety valve arranged upstream of the pressure reducing valve in the gas outlet, and a pressure gauge arranged between the pressure reducing valve and the gas outlet valve in the gas outlet. I am trying.

[0006]

[Action]

 In the present invention, a pipe with protruding heat-absorbing fins is formed in a meandering manner with the respective axial cores located in the same plane, and a pressure reducing valve arranged in the gas extraction path from the heat exchanger, A gas outlet valve located at the tip of the gas outlet, a safety valve located upstream of the pressure reducing valve in the gas outlet, and a pressure gauge located between the pressure reducing valve and the gas outlet valve in the gas outlet. Since the vaporization unit composed of and is placed alongside the outer tank of the storage tank, it becomes possible to transport and install the vaporizer unit together with the liquefied gas storage tank, and to install the liquefied gas storage tank. Work becomes easy.

[0007]

【Example】

 1 shows a front view, FIG. 2 is a plan view, and FIG. 3 is a flow chart. This liquefied gas storage tank (1) has two inner tanks (3) arranged vertically inside the outer tank (2), and heat insulation such as pearlite is provided in the space between the inner and outer tanks and between the inner tanks (3). It is made up of a heat-insulating double tank that is filled with material and maintains the space in a vacuum state, and is installed vertically with legs (4) fixed to the outer peripheral surface of the outer tank (2).

On the outer peripheral surface of the outer tank (2), two vaporization units (5) that are individually connected to the respective inner tanks (3) are fixed and supported via support stays (6). Each vaporization unit (5) has a heat exchanger (7) arranged so as to cover approximately 1/3 of the outer circumferential surface of the outer tank (2) in the vertical direction over almost the entire surface. , A gas pressure reducing valve (9) arranged in the gas extraction passage (8) from the heat exchanger (7), a gas outlet valve (10) arranged at the tip of the gas extraction passage (8), and a gas extraction passage ( The safety valve (11) arranged upstream of the pressure reducing valve (9) in 8), and the pressure gauge () arranged between the pressure reducing valve (9) and the gas outlet valve (10) in the gas extraction passage (8). It is composed of 12) and.

Each heat exchanger (7) is formed by arranging aluminum alloy pipes (14) protruding from the heat absorbing fins (13) in a single row in a meandering manner. Each pipe axis in the part is located in the plane of the middle fold.

In FIG. 3, reference numeral (15) is a liquefied gas filling system formed corresponding to each inner tank (3), and each liquefied gas filling system (15) corresponds to the inner tank (3). Liquefied gas bottom filling line (16) that connects to the bottom, top filling line (17) that connects to the top of the inner tank (3), gas release line (18) from the inner tank (3), and gas outlet at the tip Saving line (19) connected to (8), liquid level detection line (20) derived from the upper part of the inner tank (3), instrumentation line (21) derived from the upper part of the inner tank, bottom part of the inner tank (3) The gas discharge line (18) and the saving line (19) are connected to each other through a gas phase cutoff valve (23).

In the above embodiment, the heat exchanger (7) was formed into a flat plate shape with a center bent, but it was formed into an arc shape along the outer peripheral surface of the storage tank (1) (outer peripheral surface of the outer tank). You may do it. Further, when the heat exchanger (7) is formed in an arc shape, the amount of protrusion of the heat exchanger (7) from the outer surface of the storage tank is equalized, so that it does not come into contact with other objects during transportation and installation, resulting in better workability. Will improve.

[0012]

[Effect of device]

 According to the present invention, a pipe having protruding heat-absorbing fins is formed in a meandering shape with the respective axial cores located in the same plane, and a pressure reducing valve arranged in the gas extraction path from the heat exchanger, A gas outlet valve located at the tip of the gas outlet, a safety valve located upstream of the pressure reducing valve in the gas outlet, and a pressure gauge located between the pressure reducing valve and the gas outlet valve in the gas outlet. Since the vaporization unit composed of and is arranged alongside the outer tank of the storage tank, the vaporizer unit can be transported and installed integrally with the liquefied gas storage tank, and the transportation work of the liquefied gas storage tank and Installation work becomes easy.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a flowchart of the embodiment shown in FIG.

[Explanation of symbols]

1 ... Liquefied gas storage tank, 2 ... Outer tank of liquefied gas storage tank, 3 ...
Inner tank of liquefied gas storage tank, 5 ... Vaporization unit, 7 ... Heat exchanger, 8 ... Gas extraction passage, 9 ... Pressure reducing valve, 10 ... Gas outlet valve, 11
… Safety valve, 12… Pressure gauge, 13… Endothermic fins, 14… Pipe.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Osamu Date Date 3-4-8 Honmachi, Chuo-ku, Osaka City Iwatani Industrial Co., Ltd. (72) Ichiho Yamaji 1482-1, Nakatsu-cho, Marugame-shi, Kagawa Sato Man 105

Claims (3)

[Scope of utility model registration request] 1. Storage of liquefied gas constituted by an adiabatic double tank in which a plurality of inner tanks (3) for individually storing different kinds of liquefied gas consumed in a gaseous state are housed in an outer tank (2) A plurality of vaporization units (5) are arranged along with the outer tank (2) of the storage tank (1), and each vaporization unit (5) is an endothermic fin (13).
And a heat exchanger (7) in which a pipe (14) formed by projecting a tongue is formed in a meandering manner with each axis of the pipe (14) located in the same plane.
Pressure reducing valve (9) arranged in the gas extraction path (8) from (7), gas outlet valve (10) arranged at the tip of the gas extraction path (8), and pressure reduction valve in the gas extraction path (8) Safety valve (11) located upstream of (9), pressure reducing valve (9) and gas outlet valve in the gas extraction passage (8)
A liquefied gas storage tank with an evaporator, comprising a pressure gauge (12) arranged between the pressure gauge (12) and the pressure gauge (12). 2. The liquefied gas storage tank with an evaporator according to claim 1, wherein the heat exchanger (7) is formed into a flat plate shape with an intermediate bend. 3. The liquefied gas storage tank with an evaporator according to claim 1, wherein the heat exchanger (7) is formed in an arc shape along the outer tank (2) of the storage tank (1).