JP2000071856A - Fuel oil transporting vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To confirm the generation of damage of a seat packing of a bottom valve by connecting an air force-feeding means to a stored oil outflow passage so that the air pressure can work in the direction for opening the bottom valve through the stored oil outflow passage, and providing the storage oil tank with a part for visually recognizing existence of air-leakage in the bottom valve. SOLUTION: A base end of an air force-feeding pipe 35 connected to each cylinder main body is connected to a compressor 37 through an air tank 38, and each tip of air pressure-feeding branch pipes 35a,..., 35a formed by dividing a tip of the pipe 35 is connected to a bottom part of each cylinder main body, and a branch opening and closing valve 39 is provided on the way of each branch pipe 35a. Each branch valve opening and closing valve 39 is opened, and the air is force-fed into the air tank main body by the compressor 37, and a piston of the bottom valve 13 is slid for rise so as to open the valve. An air force-feeding means 50 is connected to a stored oil outflow pipe 14 so that the air pressure can work in the direction for opening the bottom valve 13 through the stored oil outflow pipe 14, and the storage oil tank 3 is provided with a visual recognition part 51. With this structure, existence of air leakage from the bottom valve 13 can be visually recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a fuel oil transportation vehicle.

[0002]

2. Description of the Related Art Conventionally, as one form of a fuel oil transportation vehicle,
A plurality of oil storage chambers are formed in the oil storage tank, a bottom valve is provided at the bottom of each oil storage chamber, and each bottom valve has a branch outflow path formed by branching a base end of the oil storage outflow path into a plurality. Some have ends connected.

[0003] As described above, in the oil tank, different types of fuel oils, for example, high-octane gasoline, regular gasoline, kerosene, light oil, and heavy oil are loaded and transported for each oil type in each of the oil storage chambers. The oil tank of the stand can be refueled for each oil type.

At this time, in the refueling operation, a bottom valve provided at the bottom of a desired oil storage chamber is opened to supply fuel oil of a desired oil type to an oil storage tank through an oil storage outflow passage.

[0005]

However, in the fuel oil transportation vehicle described above, even though the seat packing provided on the bottom valve has been damaged during a long period of use, the fuel has been refueled without being noticed. When performing work, when supplying different types of fuel oil, there is a problem that the fuel oil leaking from the seat packing may be mixed and the flash point of the fuel oil may change, which may cause a dangerous situation. There is.

[0006]

Accordingly, in the present invention, a bottom valve is provided at the bottom of the oil storage tank, an oil storage outflow path is connected to the bottom valve, and the bottom valve is opened to open the oil storage tank. In a fuel oil transport vehicle capable of discharging oil through an oil storage outflow path, an air pressure feeding means is connected to the oil storage outflow path, and the air pressure can be applied in a direction to open the bottom valve through the oil storage outflow path from the air pressure storage means. Along with the oil storage tank,
It is an object of the present invention to provide a fuel oil transport vehicle characterized in that a visual recognition part for visually confirming whether or not air leaks from a bottom valve is provided.

[0007] The present invention also has the following features.

The viewing portion is formed by opening a viewing window in a ceiling portion of the oil storage tank so that oil can be supplied into the oil storage tank through the viewing window.

The air pumping means includes an air compressor, an air tank connected to the air compressor, an air pumping / guiding channel for guiding the air pumped from the air tank, and a midway portion of the air pumping / guiding channel. Check valve provided.

[0010] The air tank is also connected to air driving means provided on the vehicle body.

[0011]

Embodiments of the present invention will be described below.

That is, the fuel oil transport vehicle according to the present invention has a basic structure in which a bottom valve is provided at the bottom of the oil storage tank, an oil storage outflow path is connected to the bottom valve, and the bottom valve is opened. The oil stored in the oil storage tank can flow out through the oil storage outflow passage.

[0013] The fuel oil transport vehicle has a characteristic structure in which air pressure feeding means is connected to the oil storage outflow path, and air pressure can be applied from the air pressure feeding means in a direction to open the bottom valve through the oil storage outflow path. In addition, the oil storage tank is provided with a visual recognition part for visually confirming whether or not air leaks from the bottom valve.

In this manner, when inspecting a failure of the bottom valve, for example, a damage of a seat packing provided on the bottom valve,
By applying the air pressure in the direction of opening the bottom valve through the oil storage outflow passage from the air pressure feeding means, it is possible to visually recognize whether or not air is leaking from the bottom valve from the visual recognition unit.

At this time, if air leaks from the bottom valve, it can be determined that the bottom valve is out of order for some reason, and the maintenance of the bottom valve can be taken promptly.

Therefore, when a plurality of oil storage chambers are provided in the oil storage tank and bottom valves are respectively provided at the bottoms of the oil storage chambers, it is possible to easily and surely check whether or not each of the bottom valves has a failure. Oil mixing during work can be reliably prevented.

The viewing portion is formed by opening a viewing window in the ceiling of the oil storage tank so that the oil can be supplied into the oil storage tank through the viewing window.

In this way, the work of visually checking the bottom valve and the work of refueling the oil storage tank can be performed through the viewing window, and the structure can be simplified.

The air pressure feeding means includes an air compressor, an air tank connected to the air compressor, an air pressure feeding / guiding flow path for guiding the air fed from the air tank, and a midway portion of the air pressure feeding / guiding flow path. And a check valve provided.

In this manner, the air pressure can be applied to the bottom valve with a simple structure, and the bottom valve can be inspected for any failure.

The air tank is also connected to air drive means provided on the vehicle body.

In this manner, the air pressure in the air tank can be used for both the inspection of the failure of the bottom valve and the driving of the air driving means, and the structure can be simplified from this point as well.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

A shown in FIGS. 1 and 2 is a tank truck as a fuel oil transport vehicle according to the present invention. The tank truck A is provided with a driving unit 2 at the front of a body frame 1 and a driving unit 2 immediately behind it. The oil storage tank 3 is arranged at the position,
Front and rear wheels 4, 5, and 6 are attached to the front and rear lower portions of the body frame 1, respectively.

As shown in FIGS. 1 and 2, the oil storage tank 3 has five partition walls 11, 11, 11, 11, 11 within a tank body 10 formed to extend in the front-rear direction. Open and stand up, six oil storage chambers 12,12,12,12,12
12, 12 are formed so that different types of fuel oil can be stored in each oil storage chamber 12.

As shown in FIG. 2 and FIG. 3, bottom valves 13, 13, 13, 13, 13, 13
And the base end of an oil storage outflow pipe 14 as an oil storage outflow path is connected to each bottom valve 13.

The oil storage outflow pipe 14 connects the upstream pipe 15 and the downstream pipe 16 via a four-way valve 17, and connects the four-way valve 17 to a pump suction side pipe 18 connected to the suction port of the pump P. The end and the tip of the pump discharge side pipe 19 connected to the discharge port of the pump P are connected.

In addition, the upstream pipe 15 has a base end portion branched into six branches to form branch pipes 15a, 15a, 15a, 15a, 15a, 15a.
And the base end of each branch pipe 15a is connected to a valve body 21 of the bottom valve 13 described later.

The downstream pipe 16 is branched into three branches at its tip to form branch pipes 16a, 16a, 16a. The branch pipes 16a are respectively connected to the left and right sides and the rear end of the body frame 1. Have been placed. 45 is a branch opening / closing valve, and 46 is a refueling port.

As described above, when fuel oil of a desired oil storage chamber 12 is supplied to an oil tank (not shown), the bottom valve 13 of the oil storage chamber is opened, and the fuel oil branches off the four-way valve 17. Open the pipe 15a → upstream pipe 15 → pump suction pipe 18 → pump P → pump discharge pipe 19 → downstream pipe 16 → branch pipe 16a to open it, and open the branch opening / closing valve 46 of the desired branch pipe 16a. When the pump P is opened and the pump P is driven, oil can be supplied from the oil supply port 47.

In this embodiment, the four-way valve 17 is connected to the fuel pipe through the branch pipe 16a, the downstream pipe 16, the pump suction pipe 18, the pump P, the pump discharge pipe 19, and the upstream pipe.
By operating the pump P by operating the pump P to open it so that it flows to the branch pipe 15a, fuel oil can be sucked in from the oil supply port 47 and fuel can be supplied and stored in the desired oil storage chamber 12. .

As shown in FIG. 4, the bottom valve 13 has a flange 21 a formed on the top of the valve body 21 and a mounting bolt 22 mounted on a bottom valve mounting portion 20 communicatively connected to the bottom 10 a of the oil storage chamber 12. A valve seat 21b is formed on the upper opening edge of the valve body 21, while a cylindrical case 21c is erected on the outer peripheral edge of the valve seat 21b, and a canopy 21d is formed on the upper end of the cylindrical case 21c. To form
A valve body support rod 24 is slidably inserted vertically into a rod insertion hole 21e formed in the center of the canopy part 21d, and a valve body 25 is attached to the lower end of the valve body support rod 24. Canopy 21
and a pressing spring 26 wound around the outer peripheral surface of the valve body support rod 24 and interposed therebetween.
25 is pressed against the valve seat 21b via a ring-shaped seat packing 23. Reference numeral 27 denotes a communication hole formed in the peripheral wall of the cylindrical case 21c, and the inside of the cylindrical case 21c communicates with the oil storage chamber 12 through the communication hole 27.

As shown in FIG. 3, a single-acting air cylinder 30 is attached to the lower end of the valve main body 21. The air cylinder 30 moves the cylinder main body 31 to the valve main body 21 in the vertical direction. The piston 32 is mounted in the cylinder body 31 and the piston 32 is slidably arranged vertically, and the lower end of the piston rod 33 is attached to the piston 32.
Is inserted into the valve body 21, and the upper end 33 is inserted into the fitting recess 25a formed at the center of the lower surface of the valve body 25 located immediately above.
a is fitted. 40 is an air discharge channel.

Further, as shown in FIGS. 2 and 3, an air pressure feed pipe 35 is connected to each cylinder body 31, and the air pressure feed pipe 35 has a base end connected to a compressor 37 via an air tank 38. Then, the distal end is branched into six-pronged shapes to form air pressure feed branch pipes 35a, 35a, 35a, 35a, 35a, 35a.
A branch pipe opening / closing valve 39 is provided in the middle of each air pressure feed branch pipe 35a. 41 is a base opening / closing valve.

In this manner, the base opening / closing valve 41 is opened, and the branch pipe opening / closing valves 39 are opened, so that the air in the air tank 38 is pumped by the compressor 37 into the cylinder body 31 from the air pumping pipe 35. By moving the piston 32 upward, the valve body 25 can be raised via the piston rod 33 against the elastic biasing force of the pressing spring 26, that is, can be opened.

Further, the branch pipe opening / closing valve 39 is closed to stop the air pressure into the cylinder body 31 so that the valve body 25 can be closed by the pressing force of the pressing spring 26. ing. 60 is a bottom valve manual opening / closing mechanism.

The operation of each of the opening / closing valves 39, 41, 45 and the four-way valve 17 can be centrally and remotely controlled by the operating unit 2 or an operating unit (not shown) provided at a desired location. I have.

In the above construction, the gist of the present invention is to connect the air pressure feeding means 50 to the oil storage outflow pipe 14 and to open the bottom valve 13 through the oil storage outflow pipe 14 by the air pressure feeding means 50. In addition to enabling the pressure to act, the oil storage tank 3 is provided with a visual recognition portion 51 for visually checking whether or not air leaks from each bottom valve 13.

That is, as shown in FIG. 3, the air pressure feeding means 50 branches off from the air pressure feeding pipe 35 to form an air pressure feeding / guide pipe 52 as an air pressure feeding / guiding flow path.
The tip of the air pressure / guide pipe 52 is connected to the branch pipe 16a.

An operating section 53 is provided in the middle of the air pressure feed / guide pipe 52, and a check valve 54 is provided at the tip of the air pressure feed / guide pipe 52.

The operation section 53 is provided on the ceiling of the oil storage tank 3.
The operating unit 53 includes an open / close valve 55, a regulator 56, and a pressure gauge 57.

In this manner, the opening / closing valve 55 of the operating section 53
, The air in the air tank 38 is compressed by the compressor 37, the air pressure feed pipe 35 → air pressure feed / guide pipe 52 → check valve 54 → branch pipe 16a → downstream pipe 16 → four-way valve 17 → upstream pipe 15 → branch Pipe 15a → Pressure feed to valve body 21,
Air pressure can be applied to the lower surface of the valve body 25.

At this time, the bottom valve 13 has some trouble, for example,
If the seat packing 23 is damaged or the like and the sealing property is not sufficiently secured, air leaks from the bottom valve 13 to form bubbles K as shown in FIGS. , The worker M can visually recognize the bubble K from the visual recognition unit 51 described later and know the abnormality of the bottom valve 13.

As shown in FIG. 2 and FIG.
A viewing window 58 is opened in the ceiling 10b of each oil storage room 12, and
The air bubbles K leaked from the bottom valve 13 can be visually recognized from 58. 59 is an opening / closing lid.

In addition, the viewing window 58 allows fuel oil to be supplied into the oil storage chamber 12 through the viewing window 58.

In this manner, the worker M climbs up the ceiling of the oil storage tank 3 and operates the operation unit 53, visually checks the air leakage of the bottom valve 13 by the same operation, and passes through the visible window 58. A series of operations such as the refueling operation of the fuel oil N can be performed.

The air tank 38 is connected to all of the air driving means provided on the vehicle body. In addition to the air cylinder 30 serving as the air driving means, an air pressure type braking device (see FIG. (Not shown) so that the vehicle body can be braked by air pressure.

[0048]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, an air pressure feeding means is connected to the oil storage outflow path, and the air pressure can be actuated in the direction to open the bottom valve through the oil storage outflow path by the air pressure feeding means. Since the tank is provided with a visual recognition part for visually checking whether there is air leakage from the bottom valve, when inspecting a failure of the bottom valve, for example, a damage of a seat packing provided on the bottom valve, the air is required. By applying the air pressure in the direction of opening the bottom valve through the oil storage outflow passage from the pumping means, whether or not air is leaking from the bottom valve can be visually recognized from the viewing portion.

At this time, if air leaks from the bottom valve, it can be determined that the bottom valve is out of order for some reason, and the maintenance of the bottom valve can be taken promptly.

Therefore, when a plurality of oil storage chambers are provided in the oil storage tank and bottom valves are provided at the bottoms of the respective oil storage chambers, it is possible to easily and surely check whether or not each bottom valve has a failure. Oil mixture during refueling work can be reliably prevented.

According to the second aspect of the present invention, the viewing portion is formed by opening a viewing window in the ceiling of the oil storage tank, and the oil supply into the oil storage tank can be performed from the viewing window. Through the viewing window, the work of visually checking the bottom valve and the work of refueling the oil storage tank can be performed, and the structure can be simplified.

According to the third aspect of the present invention, the air pressurizing means includes an air compressor, an air tank connected to the air compressor, an air pressurizing / guiding channel for guiding air pressurized from the air tank, Since it has a check valve provided in the middle of the pressure feed / guide channel, the structure can be simplified and air pressure can be applied to the bottom valve, and the bottom valve can be inspected for failure. be able to.

According to the fourth aspect of the present invention, since the air tank is also connected to the air driving means provided on the vehicle body, the air pressure in the air tank is used for inspecting the failure of the bottom valve and for controlling the air driving means. It can be commonly used for driving, and from this point, the structure of the air pressure feeding means can be simplified.

[Brief description of the drawings]

FIG. 1 is a side view of a tank truck as a fuel oil transport vehicle according to the present invention.

FIG. 2 is a plan view of the tank truck.

FIG. 3 is an illustration of an oil supply pipe.

FIG. 4 is a sectional side view of a bottom valve.

[Explanation of symbols]

 A tank truck 1 body frame 2 operation part 3 oil storage tank 13 bottom valve 30 air cylinder

Claims (4)

[Claims] 1. A bottom valve is provided at the bottom of an oil storage tank, an oil storage outflow path is connected to the bottom valve, and the bottom valve is opened to open the bottom valve.
In a fuel oil transportation vehicle that allows oil stored in an oil storage tank to flow out through an oil storage outflow path, an air pressure feeding means is connected to the oil storage outflow path, and the air pressure is supplied in a direction to open a bottom valve through the oil storage outflow path from the air pressure storage means. A fuel oil transportation vehicle, characterized in that a visual recognition unit for visually checking whether or not air leaks from the bottom valve is provided in the oil storage tank. 2. The oil storage tank according to claim 1, wherein the viewing portion is formed by opening a viewing window in a ceiling portion of the oil storage tank so that refueling into the oil storage tank can be performed from the viewing window. Fuel oil transportation vehicle. 3. The air pressure feeding means includes: an air compressor;
An air tank connected to the air compressor, an air pressure feed / guide flow path for guiding the air fed from the air tank, and a check valve provided in the middle of the air pressure feed / guide flow path are provided. The fuel oil transportation vehicle according to claim 1, wherein: 4. The fuel oil transportation vehicle according to claim 3, wherein the air tank is also connected to air driving means provided on the vehicle body.