JPH0886399A - Pressurizer for tank lorry - Google Patents

Abstract

PURPOSE: To provide a pressurizer for tank lorry capable of sufficiently withstanding vibration and shock during transportation and thermal contraction occurring when liquefied gas is passed. CONSTITUTION: When a pressurizer for tank lorry is mounted on a tank lorry and liquefied gas is fed from a tank on the tank lorry to a storage tank, the pressurizer for tank lorry which is connected between both tanks and pressurizes the liquefied gas is provided with a box-shaped frame member 10 fixed to the tank lorry and also the box-shaped frame member is provided with multiple U-shaped finned pipes 3. Also the U-shaped pipes 3 are connected to each other with an inlet header 7 and an outlet header 9, and then multiple shaft parts 100 of the U-shaped pipes including the connecting parts 11 for connecting the headers to the U-shaped pipes are fixed to a box-shaped frame member 10a using U-bands.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank / lorry pressurizer mounted on, for example, a vehicle body of a tank / lorry.

[0002]

2. Description of the Related Art Generally, it is mounted on a tank truck,
A tank / lorry pressurizer is known that is connected between both tanks to pressurize the liquefied gas when the liquefied gas is transferred from the tank / lorry tank to the storage tank.

This type of structure is subject to vibrations and shocks during transportation, so it has a structure for absorbing them and
When passing the liquefied gas, the gas temperature rises and undergoes heat shrinkage, so it is desirable to have a structure that absorbs heat shrinkage.

[0004]

[Problems to be Solved by the Invention] However, in the past,
No tank / lorry pressurizer has been proposed that can sufficiently absorb vibration, shock, heat shrinkage, etc. applied to the pressurizer.

Therefore, an object of the present invention is to solve the problems of the above-mentioned conventional techniques, and for a tank truck that can sufficiently withstand vibration during transportation, shock, or thermal contraction when passing liquefied gas. It is to provide a pressurizer.

[0006]

In order to achieve the above object, a first aspect of the present invention is mounted on a tank lorry, and when transferring liquefied gas from the tank of the tank lorry to a storage tank, both tanks In a pressurizer for a tank truck that presses liquefied gas connected between them, a plurality of U-shaped tubes having a box-shaped frame member fixed to the tank truck and having fins in the box-shaped frame member. Side by side, each U
Each of the U-shaped pipes was connected with an inlet header and an outlet header, and multiple points of the shaft portion of each U-shaped pipe, including the connecting portion that connects each header and each U-shaped pipe, were fixed to the box-shaped frame member with U-bands. It is characterized by.

A second aspect of the invention is to cover the shaft portion of each U-shaped tube including the connecting portion with a sleeve that is halved in the axial direction.
The shaft of each U-shaped tube including the connecting portion is fixed from above the sleeve with the U band, and the sleeve is U-shaped at both ends.
It is characterized in that a stopper for holding the band is provided.

[0008]

According to the first aspect of the invention, a plurality of U-shaped pipes having fins are arranged side by side on a box-shaped frame member fixed to a tank truck, and each U-shaped pipe is connected to an inlet header and an outlet. Multiple parts of the shaft part of each U-tube including the connecting part that connects each header and each U-tube are fixed to the frame member with the U band, so that vibration, shock, or liquefied gas during transportation may occur. It will be able to sufficiently withstand the heat shrinkage, etc. when passing through.

According to the second invention, even if heat shrinkage occurs,
Since each U-shaped tube can freely expand and contract through the sleeve, cracks are less likely to occur in the welded portion as compared with the case where it is firmly fixed. Further, since stoppers are provided at both ends of the sleeve, the U band engages with the stoppers, so that the sleeve does not move in the axial direction when each U-shaped tube is thermally contracted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a tank / lorry pressurizer according to the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 indicates a pressurizer for a tank truck, which pressurizer 1 is fixed to a chassis (not shown) of the tank truck. This pressurizer 1 has a frame member 10 assembled in a box shape by an angle member made of aluminum, and inside the frame member 10,
As is clear from FIG. 2, eight U-shaped tubes 3 made of aluminum bent in a U-shape are arranged in parallel.

Each of these eight U-shaped tubes 3 is
Inlet header 7 and outlet header 9 through the connecting portion 11
(See FIG. 3).

As shown in FIG. 4, this U-shaped tube 3 is manufactured by fitting an aluminum inner tube 6 into the inner circumference of an aluminum fin tube 5.

However, as shown in FIG. 2, the shaft portion of the U-shaped tube 3 is provided with a portion (hereinafter, simply referred to as a shaft portion) 100 where the fin tube 5 is not provided, and the shaft portion 100 and the connecting portion are formed. 11, a U band 23 is provided, as will be described later,
The U-shaped tube 3 is provided with the frame member 1 by the U-band 23.
It is fixed to the stay 10a of 0.

The inlet header 7 is connected via an inlet flange 13 to the tank of the tank truck (not shown), and the outlet header 9 is connected via an outlet flange 15 to a gland-fixed storage tank (not shown). .

According to this, the liquefied gas (generally, the liquefied gas is generally transported in the liquefied gas state) loaded in the tank of the tank truck is vaporized into the gas state through the pressurizer 1. To a storage tank. At this time, since the pressurizer 1 functions as an evaporator (vaporizer), the U-shaped tube 3 is cooled and contracts.

Therefore, according to this embodiment, 8 U
The character tube 3 is fixed so as to be able to absorb vibration, shock, heat shrinkage, or the like.

The specific structure of the connecting portion 11 (or the shaft portion 100) of the U-shaped pipe 3 will be described with reference to FIGS.
A fluororesin sleeve 21 (FIG. 7) as a heat insulating material, which is halved in the axial direction, is attached, and a U-band 23 made of stainless steel is placed on the sleeve 21.
3 is fixed to the stay 10a of the frame member 10 by using two bolts 25, and then fixed by tightening.

Referring to FIG. 7, the sleeve 21 is halved in the axial direction so that it can be easily attached to the connecting portion 11 (or the shaft portion 100) of the U-shaped tube 3.
Stoppers 27 are integrally formed at both ends of the holder to prevent the U-band 23 from being displaced. According to this
After fixing with the U band 23, the sleeve 21 does not move in the axial direction.

According to this embodiment, however, the heater 1
Since all of the components other than the sleeve 21, the U band 23, and the bolt 25 (stainless steel) are made of aluminum, the size and weight can be sufficiently reduced.

Further, six U-bands 23 made of stainless steel are used for each U-shaped tube 3, as shown in FIG.
According to this, 8 U-shaped tubes 3 are 48 U-bands 23
Heater 1 that can withstand vibration and shock as it is fixed by
Becomes

Further, since the sliding sleeve 21 is interposed between the U band 23 and the U-shaped tube 3, even if the U-shaped tube 3 contracts due to thermal contraction, the U-shaped tube 3 itself is fixed. Since it can be shrunk freely in the axial direction without cracks, for example, no cracks will occur in the welded portion between the headers 7 and 9 and the connecting portion 11.

Further, stoppers 2 are provided at both ends of the sleeve 21.
7 is provided, so that when the U-shaped tube 3 contracts due to heat contraction, the sleeve 2 moves from the portion fixed by the U band 23.
1 never comes off. Further, since the sleeve 21 is divided into two parts 21a, the sleeve 21
It is easy to attach the U-shaped tube 3 to the U-shaped tube 3.

Although the present invention has been described based on the embodiment, it is clear that the present invention is not limited to this. For example, the sleeve 21 is not limited to the one made of fluororesin as long as it is made of a material having a good slip property. However, those made of resin having excellent moldability are preferable.
Further, in consideration of strength, the frame member 10 can be made of stainless steel.

[0025]

As is apparent from the above description, according to the first aspect of the present invention, a box-shaped frame member fixed to the tank truck is provided, and the box-shaped frame member has a plurality of fins. Book U-tubes in parallel, connect each U-tube with an inlet header and an outlet header, and connect the U-tubes to each other at multiple points on the shaft of each U-tube, including the joints that connect each header to each U-tube. Since it has a structure that is fixed to the frame member with a U band, vibration, shock during transportation,
Alternatively, it can sufficiently withstand thermal contraction when passing the liquefied gas.

According to the second aspect of the present invention, by interposing the sleeve which is divided in half in the axial direction, each U-shaped tube can be freely contracted through the sleeve even if thermal contraction occurs, so that it is firm. As compared with the case where it is fixed to the U.S.A., the welded part is less likely to crack, and it can withstand thermal contraction sufficiently. Moreover, stoppers are provided at both ends of the sleeve. The engagement of the bands prevents axial movement of the sleeve during heat shrinkage.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a tank / lorry pressurizer according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is an end view of FIG.

FIG. 4 is a partial cross-sectional side view showing a U-shaped tube.

FIG. 5 is a side view showing a fixed portion of a U-shaped tube.

6 is an end view of FIG.

FIG. 7 is an exploded perspective view showing a sleeve.

[Explanation of symbols]

 1 Pressurizer 3 U-shaped tube 7 Inlet header 9 Outlet header 10 Frame member 11 Connecting part 21 Sleeve 23 U band 100 Shaft part

Claims (2)

[Claims] 1. A tank / lorry pressurizer which is mounted on a tank / lorry and which is connected between both tanks to pressurize the liquefied gas when the liquefied gas is transferred from the tank of the tank / lorry to the storage tank, It has a box-shaped frame member fixed to the tank truck, and a plurality of U-shaped pipes having fins are arranged in parallel in this box-shaped frame member, and each U-shaped pipe is provided with an inlet header and an outlet header. Pressurizing device for a tank / lorry, wherein a plurality of shaft portions of each U-shaped pipe including the connecting portion connecting each header and each U-shaped pipe are fixed to the frame member with U bands. . 2. The shaft portion of each U-shaped tube including the connecting portion is covered with a sleeve which is halved in the axial direction, and the shaft portion of each U-shaped tube including the connecting portion is covered from above the sleeve. The tank / lorry pressurizer according to claim 1, wherein the sleeve is fixed by a U band, and stoppers for pressing the U band are provided at both ends of the sleeve.