JP3472984B2 - Tank lorry vapor recovery equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vapor recovery device for a tank truck.

[0002]

2. Description of the Related Art If a vapor such as gasoline or kerosene is discharged from a tank of a tank truck and then the vapor remaining in the tank is directly discharged into the atmosphere, air pollution occurs. It is necessary to collect the residual vapor in an underground tank or perform a predetermined treatment to discharge it. Therefore, the tank truck has a vapor recovery device for recovering the residual vapor in the tank.

An example of this vapor recovery device is disclosed in Japanese Unexamined Patent Publication No.
It is disclosed in Japanese Patent No. 85196. The vapor recovery device disclosed in this publication collects the vapor in the tank to an underground tank or the like through a vapor pipe that communicates with each compartment of the tank via an opening / closing valve and a central pipe to which each vapor pipe is connected. The above centralized piping is
It is installed in parallel with the protective frame installed on the top of the tank to protect the manhole cover when the vehicle falls. However,
In the vapor recovery device, since the central pipe is arranged between the pair of protective frames, the walking and working space at the upper part of the tank is narrowed, and the walking at the upper part of the tank and loading such as opening and closing the manhole cover are carried out. There was a problem that it got in the way of work.

Another example of the vapor recovery device is disclosed in Japanese Utility Model Laid-Open No. 50-106809. In the vapor recovery device disclosed in this publication, the central pipe is also used as a protective frame having a hollow structure, and one end of a vapor recovery pipe through which a tank is inserted is connected to the protective frame. According to this vapor recovery device, since the central pipe is also used as the protective frame, there is no inconvenience that the central pipe interferes with walking or work, but since a pipe for inserting the tank is separately required, As a result, the piping structure becomes complicated, and the protective frame is corroded by the vapor due to long-term use and its strength is reduced, and the protective frame may collapse when the vehicle body falls. The present invention has been made in view of the above problems, and an object of the present invention is to provide a vapor recovery device for a tank truck that can simplify the piping structure and does not corrode the protective frame. Also,
SUMMARY OF THE INVENTION An object of the present invention is to provide a vapor recovery device for a tank lorry vehicle that can widen walking and work space above the tank.

[0005]

A vapor recovery device for a tank truck according to claim 1 for achieving the above object,
A device for recovering the vapor generated in the tank of a tank truck vehicle in which a plurality of columns are erected inside the tank and a wave preventing plate that suppresses rocking of the liquid in the tank is attached to the columns. Of the plurality of columns, a predetermined column is a hollow structure penetrating in the vertical direction, and the other end of the upper vapor pipe having one end communicating with the inside of the tank is a column of the hollow structure. The lower vapor pipe connected to the upper part of the tank and provided at the lower part of the tank for discharging vapor from one end side is connected to the lower part of the pillar having the hollow structure. Further, the vapor recovery apparatus for a tank truck according to claim 2 is the vapor recovery apparatus for a tank truck according to claim 1, wherein the inside of the tank is partitioned by a plurality of compartments, and each of the hollow structure columns is provided. It is characterized in that it is provided for each section.

According to the vapor recovery apparatus for a tank lorry vehicle having the above-mentioned structure, the column for attaching the wave preventing plate has a hollow structure, and the upper vapor pipe and the lower vapor pipe are communicated with each other through the hollow portion of the column. You can Therefore, it is not necessary to separately provide a pipe for connecting the upper vapor pipe and the lower vapor pipe. When the tank is divided into a plurality of compartments, the lower vapor piping is configured as a centralized piping, so that the centralized piping above the tank can be eliminated. Moreover, since the protective frame does not also serve as vapor piping, there is no risk of the protective frame being corroded by the vapor.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a sectional view showing one embodiment of a vapor recovery apparatus for a tank truck according to the present invention. FIG. 2 is a plan view thereof. In the figure, the tank 1 is mounted on a vehicle body (not shown), and its cross section is formed into an elliptical shape or a circular shape. The inside of the tank 1 is divided into a plurality of chambers by a partition plate 2 so that different types of oil liquids such as gasoline, kerosene, and light oil can be individually stored, and a manhole 4 is provided at the top of each divided chamber 3. A closing manhole cover 5 is provided.

A pair of protective frames 6 for preventing the manhole cover 5 and the like from being damaged when the vehicle body rolls over is provided at both sides of the manhole cover 5 above the tank 1. The protective frame 6 is provided over the entire length of the tank 1 in the longitudinal direction, and its cross-sectional shape is formed into a substantially A shape (see FIG. 3). Inside each of the compartments 3, a plurality of columns 7, 7a are provided upright in the front-rear direction and the width direction of the vehicle body in a state of being separated from each other by a predetermined distance. The columns 7, 7a are housed in each of the compartments 3. A wave preventive plate 8 is attached to prevent the oil liquid from swinging. This breakwater 8
Is a plurality of grooved members 8a made of stainless steel, aluminum or the like arranged in parallel along the vertical direction of the columns 7, 7a at predetermined intervals, and each grooved member 8a is housed in the compartment 3. The oil liquid extends in the front-rear direction of the vehicle body so that it can be restrained from swinging in the width direction of the vehicle body.

The lower ends of the columns 7 and 7a are welded to the bottom of the tank 1, and the upper ends thereof are welded to the ceiling of the tank 1. Further, the predetermined columns 7a have a hollow structure that penetrates in the vertical direction (see FIG. 7), and the other columns 7 have a U-shaped cross section (see FIG. 8). One column 7a having the hollow structure is provided for each of the compartments 3, the upper end of each column is connected to the upper vapor pipe 9 arranged on the upper surface of the tank 1, and the lower end is the lower vapor pipe. It is connected to 10. The pillar 7a having the hollow structure
Is made of, for example, an extruded material made of aluminum, and strip-shaped ears 7c for attaching the wave preventing plate 8 are provided on both sides of the hollow portion 7b in a protruding manner.

One end of the upper vapor pipe 9 is communicated with the inside of the compartment 3 near the manhole cover 5 via an opening / closing valve V (see FIG. 4), and the other end of the column 7a has the hollow structure. It is connected to the. Further, the lower vapor pipe 10 has an intermediate part extending in the front-rear direction of the vehicle body along the bottom surface of the tank 1, and the intermediate part extends through the respective branch pipes 10a to the lower end part of the hollow strut 7a. It is connected to the. That is, the lower vapor pipe 10 is
It is configured as a central pipe for vapor recovery. Also,
A front end portion and a rear end portion of the lower vapor pipe 10 are branched to both sides in the vehicle width direction, and a connecting tool 11 for connecting a vapor collecting hose is provided at a terminal end thereof (Fig. 5 and FIG. 6). As shown in detail in FIG. 9, the opening / closing valve V is such that the movable seat V1 is biased by the spring S, and automatically opens when the internal pressure of the compartment 3 rises above a predetermined value. Compartment 3 with upper vapor piping 9
Can be connected to. Further, by rotating the handle V2, the movable seat V1 can be raised against the biasing force of the spring S, and the compartment 3 can be communicated with the upper vapor pipe 9.

With the above structure, the vapor remaining in the compartment 3 can be recovered in the storage tank or the like of the gas station through the upper vapor pipe 9, the hollow strut 7a and the lower vapor pipe 10. Therefore, it is not necessary to separately provide a pipe for connecting the upper vapor pipe 9 and the lower vapor pipe 10 to each other, and accordingly, the pipe structure can be simplified and the pipe cost can be reduced. Moreover, since the lower vapor pipe 10 is configured as a concentrated pipe, it is not necessary to arrange the concentrated pipe on the upper part of the tank 1. Therefore, the walking and working space above the tank 1 can be widened, and the piping structure above the tank 1 can be simplified. Further, since the protective frame 6 is not used as a centralized pipe, there is no risk of the protective frame 6 corroding.

One end of the upper vapor pipe 9 is
As shown in FIG. 10, it may be slidably fitted inside the pillar 7a having a hollow structure. In this case, the tank 1
Even if the tank 1 bends when a person rides on it, the upper vapor pipe 9 can be made to follow this, so that the connection state with the column 7a having a hollow structure can be maintained without any trouble. The wave preventing plate 8 may be arranged so as to extend in the vehicle width direction. In this case, it is possible to prevent the liquid in the tank 1 from rocking in the front-rear direction due to sudden braking or sudden start. It will be restrained. The vapor recovery apparatus of the present invention can be applied to and implemented in a tank lorry vehicle in which the interior of the tank 1 is not divided by the partition plate 2 into one chamber. In this case, the upper vapor pipe 9 and the lower vapor pipe can be used. The pipe 10 is composed of at least one pipe.

[0013]

As described above, according to the vapor recovery apparatus for a tank truck of the present invention, the pipe for connecting the upper vapor pipe and the lower vapor pipe is also used as the support column for attaching the wave preventing plate. Therefore, the piping configuration can be simplified and the piping cost can be reduced accordingly. Further, when the inside of the tank is divided into a plurality of compartments, the lower vapor piping is configured as a centralized piping, so that it is not necessary to arrange the centralized piping above the tank. Therefore, the walking and working space above the tank can be widened, and the piping structure above the tank can be simplified. Moreover, since the protective frame is not used as a centralized pipe, there is no risk of the protective frame corroding.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of a vapor recovery device for a tank truck according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a schematic cross-sectional view taken along the line III-III of FIG.

FIG. 4 is a sectional view of an essential part showing an upper vapor piping part.

5 is a view on arrow A in FIG. 2. FIG.

FIG. 6 is a view on arrow B of FIG.

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

8 is a sectional view taken along line VIII-VIII of FIG.

FIG. 9 is a cross-sectional view of an opening / closing valve.

FIG. 10 is a main-portion cross-sectional view showing another embodiment.

[Explanation of symbols]

1 tank 3 compartments 7 props 7a Hollow column 8 Wave plate 9 Upper vapor piping 10 Lower vapor piping

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-85588 (JP, A) JP-A-6-206488 (JP, A) JP-A-6-345176 (JP, A) JP-A-2- 85196 (JP, A) JP-A-8-133384 (JP, A) JP-A-4-173593 (JP, A) JP-A-55-107677 (JP, A) Jitsukaihei 2-31889 (JP, U) Actual Development Sho 50-106809 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60P 3/24 B67D 5/00

Claims (2)

(57) [Claims] 1. A tank lorry vehicle in which a plurality of columns are erected inside a tank, and a wave-preventing plate is attached to the columns to prevent the liquid in the tank from oscillating. An apparatus for recovering vapor, wherein a predetermined strut among the plurality of strut has a hollow structure penetrating in a vertical direction, and the other end of the upper vapor pipe, one end of which communicates with the inside of the tank, A vaporizer for a tank truck, characterized in that a lower vapor pipe connected to the upper portion of the pillar having the hollow structure and provided at the lower portion of the tank for discharging vapor from one end side is connected to the lower portion of the pillar having the hollow structure. Recovery device. 2. A vapor recovery apparatus for a tank truck, wherein the inside of the tank is partitioned by a plurality of compartments, and the columns having the hollow structure are provided for each compartment.