JP2001182899A - Bulk supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bulk supply device for avoiding re-liquefaction in a siphon tube. SOLUTION: The bulk supply device has accessory equipment mounted in a vertical bulk reservoir. The accessory equipment is mounted separately on a barrel portion 1a and a head portion 1b of the bulk reservoir 1, in such a manner that the accessory equipment including a liquid take-in valve 2 used for filling a liquid and taking it out is mounted on the barrel portion 1a and the accessory equipment including a gas take-out valve 6 used for taking a gas out is mounted on the head portion 1b. The need for the siphon tube ranging from a gas phase portion to the gas take-out valve 6 is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulk supply device, and more particularly to a bulk supply device for supplying LP gas (liquefied petroleum gas) from a gas discharge valve using a vertical bulk storage tank.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a conventional bulk supply apparatus using a vertical bulk storage tank. The body 1a of the bulk storage tank 1 has a liquid intake valve 2 with an overfill prevention device,
Attached devices such as a pressure equalizing valve 3, a float type liquid level meter 4, a liquid outlet valve 5, and a gas outlet valve 6 are attached, and these accessories are covered with a protector 30. A siphon pipe 32 arranged inside the bulk storage tank 1 is attached to the gas extraction valve 6. The tip of the siphon tube 32 reaches the gas phase part 33 in the bulk storage tank 1. In addition, gas extraction valve 6
Is connected to the gas release preventing device 17 and the pressure regulator 35. In FIG. 5, reference numeral 8 denotes a safety valve provided with a connection valve with a check valve.

[0003]

The above-mentioned conventional bulk supply apparatus has the following problems.

A reliquefaction phenomenon occurs in the siphon pipe 32 or in the vicinity of the gas discharge valve 6 due to an environmental change. That is, in the daytime, the direct sunlight shines on the bulk storage tank 1, and the gas phase portion 33 having a small heat capacity is heated, and a temperature difference is generated between the gas phase portion 34 and the liquid phase portion 34 having a large heat capacity. Particularly, since the lower part of the bulk storage tank 1 is hardly exposed to direct sunlight, such a temperature difference appears remarkably. Thereby, the gas phase part 33
The warm gas entering the siphon tube 32 from the
And cooled again.

After sunset, when the outside air temperature decreases and a temperature difference occurs between the inside and outside of the bulk storage tank 1, the vicinity of the connection from the gas discharge valve 6 to the pressure regulator 35 via the gas release preventing device 17 is reduced. The warm gas is cooled by the outside temperature and reliquefied.

[0006] As described above, when gas is consumed in the siphon pipe 32 or in the vicinity of the gas outlet valve 6 in a state where reliquefaction has occurred, the gas release preventing device 17 and the pressure regulator 35 are cooled by latent heat of vaporization and dew condensation occurs. Or, frost adheres. In such a state, in the S-type security gas meter, a phenomenon such as an abnormal display of the ABR display or an abnormal notification occurs.

[0007] Further, the following various effects occur in each accessory device. That is, in the gas release prevention device 17, the gas cutoff flow rate changes and the pressure regulator 3
In No. 5, there is a problem that the adjustment pressure becomes unstable, the closing pressure becomes abnormally high, and the rubber parts such as the diaphragm and the valve rubber are deteriorated, resulting in adverse effects such as a decrease in durability.

The present invention has been made in view of the above points, and provides a bulk supply apparatus in which reliquefaction in the vicinity of a gas extraction valve or in a siphon pipe, which is a problem in a vertical bulk storage tank, is eliminated. With the goal.

[0009]

In order to achieve the above object, an invention according to claim 1 is a bulk supply device in which an auxiliary device is attached to a vertical bulk storage tank, wherein the auxiliary device is a bulk supply device. Attached to the body and mirror part of the storage tank separately, the barrel is used for liquid filling and taking out including liquid intake valve, and the mirror part is used for gas taking out including gas taking out valve. Are attached to each other.

[0010] For this reason, according to the first aspect of the present invention, the siphon pipe from the gaseous phase section to the gas extraction valve is not required, the problem of reliquefaction in the siphon pipe is solved, and the attached equipment is dispersed at two locations. The protector can be downsized, and the door of the protector can be easily opened and closed at the time of filling the LP gas or taking out the gas.

According to a second aspect of the present invention, there is provided the bulk supply device according to the first aspect, wherein each of the attached devices is attached to the bulk storage tank via a connection valve having a check valve. It is characterized by the following.

Therefore, in the second aspect of the present invention, when the accessory is removed, the connection valve is automatically closed, so that the accessory can be replaced without removing the LP gas in the bulk storage tank.

The invention according to claim 3 is the bulk supply device according to claim 1 or 2, wherein a two-stage primary pressure regulator is connected to the gas extraction valve, and the two-stage primary pressure regulator is connected to the gas extraction valve. A gas emission prevention device is connected.

Therefore, according to the third aspect of the present invention, the high pressure portion near the gas extraction valve is shortened, and the amount of LP gas to be reliquefied can be reduced.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 4 and 5 are denoted by the same reference numerals.

As shown in FIG. 1, a bulk supply device according to an embodiment of the present invention is a vertical bulk storage tank 1, which is attached to a bulk portion 1a of a bulk storage tank 1 and a mirror portion 1b. It is roughly composed of attached equipment.

More specifically, the body 1a of the bulk storage tank 1 is mainly filled and discharged with LP gas, such as a liquid intake valve 2, a pressure equalizing valve 3, a float type level gauge 4, and a liquid extraction valve 5. Ancillary equipment to be used at the time is attached. These accessories are covered with a protector 30. In addition, the mirror portion 1b of the bulk storage tank 1 has a gas extraction valve 6, a liquid intake valve 7,
Attached devices mainly used for gas extraction, such as (with an overfilling prevention device) and a safety valve 8, are attached. These accessories are covered with a protector 31.

A connection valve (with a check valve) 9 to be described later is attached to a portion (neck ring) on the storage tank 1 side to which each of the above-mentioned accessories is connected.

Liquid intake valve 2 attached to body 1a
An inner high-pressure pipe 13 passing through the bulk storage tank 1 is connected between the coupling 10 and one neck ring 12 attached to the mirror portion 1b. Further, the neck ring 12 and the liquid intake valve 7 are connected to the outside of the storage tank 1 by an outer high-pressure pipe 14 such as a high-pressure metal flexible hose or a high-pressure bend pipe. This allows
The LP gas liquid supplied from the liquid intake valve 2 passes through the inner high-pressure pipe 13, the neck ring 12, the outer high-pressure pipe 14, and the liquid intake valve 7 to fill the bulk storage tank 1.

A two-stage primary pressure regulator 16 is connected to the outlet of the gas outlet valve 6.
The outlet 6 is connected to a gas release prevention device 17, and the outlet of the gas release prevention device 17 is connected to a two-stage secondary pressure regulator 18. Thus, by attaching the gas release prevention device 17 to the outlet of the two-stage primary pressure regulator 16,
The high-pressure part near the gas extraction valve 6 is shortened and L is reliquefied.
The amount of P gas can be reduced.

FIG. 3 shows an example of the structure of a connection valve attached to a neck ring of each accessory device. The connection valve 9 includes a body 21 and a check valve 22 provided in the body 21. The check valve 22 is provided with a valve body 24 at the tip of a shaft 23 and is urged upward by a spring 27 provided between a spring receiver 25 and a sleeve 26 at the upper end. The liquid discharge valve 5 is attached to the upper part of the body 21 by a screw portion 5a. The spring receiver 25 is pushed by the tip of the liquid discharge valve 5 to open the valve body 24. In this state, the handle 28 of the liquid discharge valve 5 can be operated to take out the liquid from the outlet 27. When the liquid discharge valve 5 is removed from the connection valve 9 for replacement, the valve body 24 is closed by the force of the spring 27, and the liquid in the bulk storage tank 1 is stopped. Although FIG. 3 shows only the case of the liquid discharge valve 5, a similar connection valve 9 is provided in other accessory devices such as the pressure equalizing valve 3, the gas discharge valve 6 and the safety valve 8. The liquid intake valve 7 is provided with an overfill prevention device (not shown) in addition to the connection valve 9.

As described above, in the bulk supply device of the present embodiment, the auxiliary equipment includes the body 1a of the bulk storage tank 1 and the mirror 1b.
The protector 30, 31 can be miniaturized, and the door of the protector 30, 31 can be easily opened and closed at the time of filling the LP gas or taking out the gas. Since the mirror 6 is provided in the mirror portion 1b, the conventional siphon pipe 32 from the gas phase section 33 (see FIG. 4) to the gas extraction valve 6 becomes unnecessary, and thus the problem of reliquefaction in the siphon pipe is eliminated.

Each accessory has a check valve 2 as a main valve.
Since the connection valve 9 with 2 is provided, the connection valve 9 is automatically closed when the accessory is removed, and the accessory can be replaced without removing the LP gas in the bulk storage tank 1.

Further, the liquid intake valve 7 has a connection valve 9
Can be attached to the mirror part 1b in the vertical direction, so that the liquid intake valve (attached vertically to the horizontal body) used in the conventional horizontal bulk storage tank can be used as it is, and the vertical and horizontal liquids can be used. Common use of intake valves is possible.

In the embodiment described above, the two-stage secondary pressure regulator 18 is connected to the outlet of the gas release prevention device 17, but the two-stage secondary pressure regulator 18 is not necessarily required. However, it is also possible to omit it.

[0026]

As described above in detail, according to the first aspect of the present invention, the body of the bulk storage tank is provided with the auxiliary equipment used for liquid filling and discharging including the liquid intake valve and the mirror. Since the auxiliary equipment used for gas extraction including the gas extraction valve is attached to the section, the siphon pipe from the gas phase section to the gas extraction valve becomes unnecessary, and the problem of reliquefaction in the conventional siphon pipe is eliminated, The protector of each accessory can be miniaturized, and the door of the protector can be easily opened and closed at the time of filling the LP gas or taking out the gas.

According to the second aspect of the present invention, since the accessory is attached to the bulk storage tank via the connection valve with the check valve, in addition to the effect of the first aspect, the accessory is attached. When removed, the connection valve is automatically closed, allowing replacement of attached equipment without removing LP gas from the bulk storage tank.

According to the third aspect of the present invention, the two-stage primary pressure regulator and the gas release preventing device are connected to the gas outlet valve. In addition, the high-pressure part near the gas extraction valve is shortened, and the amount of LP gas to be reliquefied can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a bulk supply device of the present invention.

FIG. 2 is a side view of the bulk supply device of FIG.

FIG. 3 is a cross-sectional view showing an example of a connection valve for an accessory device.

FIG. 4 is a side view of a conventional bulk supply device using a vertical bulk storage tank.

FIG. 5 is a front view of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bulk storage tank 1a Body part 1b Mirror part 6 Gas extraction valve 7 Liquid intake valve 9 Connecting valve 16 Two-stage primary pressure regulator 17 Gas release prevention device 18 Two-stage secondary pressure regulator 22 Check valve

Claims (3)

[Claims] 1. A bulk supply device in which an auxiliary device is mounted on a vertical bulk storage tank, wherein the auxiliary device is separately mounted on a body portion and a mirror portion of the bulk storage tank, and a liquid collection device is provided on the body portion. A bulk supply device comprising: an accessory used for filling and taking out a liquid including an inlet valve; and an accessory used for taking out a gas including a gas removing valve is attached to a mirror portion. 2. The bulk supply device according to claim 1, wherein each of the accessory devices is attached to the bulk storage tank via a connection valve having a check valve. 3. The bulk according to claim 1, wherein a two-stage primary pressure regulator is connected to the gas extraction valve, and a gas release prevention device is connected to the two-stage primary pressure regulator. Feeding device.