JP2003114000A - Multistage dry seal gas holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform sending in and out operation of gas by holding gas pressure of the sending in and out gas constant when sending the gas in and out of a multistage dry seal gas holder. SOLUTION: A gas tank 2 has a steel plate bottom plate 2a and a side plate 2b, and has a T fender 3 for vertically moving along an inside surface of the side plate of the gas tank 2, and a vertically moving piston 4 arranged on the inside surface. The multistage dry seal gas holder is composed of sealing films 5a and 5b interposed between both, and formed so as to hold airtightness, and a piston balancer 6. A pulley 24 is arranged in an upper end part of the T fender 3. An arm 22 is projected from the piston 4 in an upper part of the pulley 24. While projecting a projecting part 25 in the vicinity of an inside upper end part of the side plate 2b of the gas tank 2, a rope 26 is extended between the projecting part 25 and the arm 22 via the pulley 24, and when sending in and out the gas from an under surface of the gas holder 20, the sending in and out operation of the gas can be performed under the same gas pressure.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-stage dry seal gas holder, and more particularly, to a large-sized multi-stage dry seal which is completely dry and has a capacity of about 2000 m ³ or more. The present invention relates to a seal gas holder. 2. Description of the Related Art A conventional multi-stage dry seal gas holder (hereinafter simply referred to as a gas holder) will be described with reference to FIGS. The figure is a vertical sectional front view of the gas holder 1. The gas holder 1 includes a bottom plate 2a and a side plate 2 made of a steel plate.
b, and a side plate 2 of the gas tank 2
(b) a telescoping fender 3 (hereinafter referred to as a T fender) which moves up and down along the inner surface of the b fender;
A piston 4 disposed on the inner surface of the piston and moving up and down, a special plate formed between the T fender 3 and the side plate 2b of the gas tank 2 and between the T fender 3 and the piston 4 so as to maintain airtightness. It comprises a sealing film 5 made of synthetic rubber and a balancing device 6 for allowing the piston to move up and down in a horizontal state. The seal film 5 is composed of an outer seal film 5a and an inner seal film 5b. When the T fender 3 and the piston 4 disposed in the gas tank 2 are at the lowermost end, One end of the outer seal film 5a is attached and fixed to the outer lower end of the T fender 3;
The other end is the inner surface of the side plate 2b of the gas tank 2 and is mounted and fixed above the lower end of the T fender 3. Further, the inner seal film 5b has one end of the T fender 3. It is attached and fixed to the upper end, and the other end is attached and fixed to the lower end of the outer surface of the piston 4. A cylindrical body 7 having a predetermined length and an open upper and lower surface is provided from the upper end of the T-fender 3, and an annular projection 8 is projected from the inner surface of the upper end of the cylindrical body 7. ,
When the piston 4 rises, the piston 4 comes into contact with the projection 8 so that the piston 4 and the T fender 3 rise integrally. The balancing device 6 has one end of a bar 9 erected on the upper surface of the gas tank 2 extending to the outside of the gas tank 2, and further has hook portions 10 a on both sides of the inner bottom surface of the piston 4. , 10b, and the inner pulleys 11a, 1b are attached to the bars 9 at positions just above the hooks 10a, 10b.
1b, an outer pulley 11C is also provided at the extending portion of the bar 9, and one end is connected to the hook 1
Pulleys 11a and 12b respectively attached to the hooks 10a and 10b are attached to the pulleys 11a and 12b.
a and 11b, while being wound in the horizontal direction, around the outer pulley 11C provided on the outer portion, and connected to the balance weight 13 suspended from the outer pulley 11C. . A plurality of the equilibrium devices 6 are provided at equal intervals on the inner bottom surface of the piston 4 so that the piston 4 can always be held horizontally and vertically moved. In the drawing, reference numeral 14 denotes a gas delivery inlet. When the gas is fed into the conventional gas holder 1 having the above-described configuration, first, the inner seal film 5b expands in the state shown in FIG. The piston 4 starts to float and the piston 4 rises, and a gas corresponding to the rising amount of the piston 4 is sent into the gas tank 1. Further, when gas is supplied, the upper end of the piston 4 comes into contact with the annular projection 8 as shown in FIG. 5, and the piston 4 and the T-fender 3 rise integrally, and As shown in FIG. 6, the T fender 3 and the piston 4 move up to the gas full position, and the gas to be fed reaches a full state. Therefore, initially, when only the piston 4 rises, only the inner seal film 5b between the piston 4 and the T-fender 3 operates, and after that state, the gas becomes full. Until it reaches, only the outer seal film 5a between the side plate 2b and the T fender 3 operates. When the gas is delivered from the gas holder 1, the piston 4, the T fender 3, the inner seal film 5b, and the outer seal film 5a operate in a completely opposite manner to the above-described process to perform the gas delivery operation. . In the above conventional example, when gas is supplied into the gas tank, the piston first rises,
In the next stage, the piston and the T-fender rise together. Therefore, initially, the gas pressure corresponding to the piston is applied to the piston, and the piston rises to the above-described predetermined position. Then, when the piston and the T-fender rise integrally, The gas pressure corresponding to the T fender is applied in addition to the gas pressure corresponding to the piston. In the case of sending gas from the gas tank, first, the piston and the T fender descend at the same gas pressure because the piston and the T fender descend at the same time, and after the T fender lands, the gas pressure corresponding to the T fender is reduced. Decreases and finally the piston lands. As described above, in the conventional gas holder, the gas pressure fluctuates during the operation of sending and receiving gas. In such a case, it is extremely troublesome to adjust the valve in accordance with such a change in the gas pressure because the gas is sent and received through the valve. Therefore, when sending or sending gas to or from a multi-stage dry seal gas holder, the gas pressure of the delivered gas is kept constant so that the gas delivery operation is performed. Therefore, a technical problem to be solved arises, and an object of the present invention is to solve the problem. The present invention has been proposed in order to achieve the above object, and is a gas tank having a bottom plate and a side plate made of a steel plate. A T-fender that moves up and down along with a piston that is disposed on the inner surface of the T-fender and moves up and down, and is airtightly interposed between the side plate of the gas tank, the T-fender, and the T-fender and the piston. In a multi-stage dry seal gas holder composed of a seal film formed so as to hold the piston and a piston balancing device, a pulley is provided at an upper end portion of the T fender, and an arm projects from the piston above the pulley. On the other hand, a projection is protruded in the vicinity of the upper end inside the side plate of the gas tank, and a rope is looped between the projection and the arm via the pulley, and the lower surface of the gas holder is provided. The present invention provides a multi-stage dry seal gas holder which is formed so as to be able to perform the operation of sending and receiving the gas at the same gas pressure when the gas is sent from or sent out of the gas. . An embodiment of the present invention will be described below in detail with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. The figure is a longitudinal sectional front view of a multi-stage dry seal gas holder (hereinafter, referred to as a gas holder) of the present invention. The point that the gas holder 20 is different from the conventional gas holder 1, that is, the component corresponding to the gist of the present invention is a cylindrical body 7 erected at the upper end of the T fender 3 as shown in FIG. A plurality of elongated holes 21, 21 ... are drilled in the vertical direction at a predetermined interval, and arms 22, 21 protruding outward from the upper end of the piston 4 in the elongated holes 21, 21, ....
, Respectively, and further, brackets 23, 23,... Are protruded at the upper end of the T-fender 3 at locations facing the arms 22, 22,.
3 are provided with pulleys 24, 24, respectively, and are protruded from the upper end of the inner surface of the side plate 2b of the gas tank 2, and
The protrusions 2 disposed immediately above the pulleys 24, 24,...
, And the ends of the arms 22, 22 corresponding to the projections 25, 25, respectively.
. Are wound around the pulleys 24, 24,. In addition, at least three sets of suspension mechanisms for the T fender 3 and the piston 4 formed by the rope 26 and the like can be provided at equal intervals. In that case, the vertical movement of the T fender 3 and the piston 4 is adjusted by the balancing device 6.
Can be smoothly performed while maintaining the horizontal state. Therefore, the state shown in FIG.
When the gas is fed into the gas holder 20 when the T fender 3 and the piston 4 are located on the inner bottom surface, the outer seal film 5a and the inner seal film 5b bulge simultaneously, and the gas pressure is set. When the pressure is reached, the T fenders 3 and the pistons 4 suspended by the ropes 26, 26 via the pulleys 24, 24 at the same time rise by the set pressure. It reaches the position shown in FIG. 2, that is, the 50% gas capacity position. At this time, the outer seal film 5
a and the inner seal film 5b swell at the same time, and the gas filling space can be expanded and filled with the 50% capacity gas while being in a substantially inverted U-shaped state. Further, if the gas at the predetermined pressure is sent,
As shown in FIG. 3, the T fender 3 and the piston 4 move up to the gas full position. At this time, the outer seal film 5a and the inner seal film 5b are stretched substantially linearly up and down, so that the gas filling space is further expanded, and the gas to be filled becomes full. Also, when sending out the gas sent into the gas holder 20, the T fender 3 and the piston 4 descend and come into contact with the ground at a uniform gas pressure. That is, these operations are performed by fixing both ends of the ropes 26 of a fixed length to the inner surface of the side plate 2b of the gas tank 2 and the piston 4 via pulleys 24 provided on the T fender 3, respectively. When the outer seal film 5a and the inner seal film 5b are actuated and inflated, the T fender 3 and the piston 4 simultaneously move up and down while being pulled by the ropes 26, 26,. Because it will be. Then, the gas in the gas holder 20 always operates on the T fender 3 and the piston 4 at a constant gas pressure to move the T fender 3 and the piston 4 up and down. When the T fender 3 and the piston 4 are moved up and down by the ropes 26, 26, the arms 22, 22 projecting from the piston 4 are inserted into the elongated holes 21 formed in the cylindrical body 7. , 21... Do not hinder the vertical movement of the T fender 3 and the piston 4 at all. In the above embodiment, a two-stage type is described, but a three-stage type or more may be used. The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones. As described in detail in the above embodiment, the present invention provides a pulley at an upper end portion of a T fender provided in a gas holder, and further includes an upper end portion of a side plate of a gas tank. When the gas is introduced into the gas holder, the rope is fixedly arranged via the pulley between the arm disposed above the pulley and the arm protruding from the piston. Alternatively, at the time of delivery, the T fender and the piston can be moved up and down in the gas tank at a constant gas pressure by the action of the rope to perform the delivery and delivery operation of the gas. Therefore, it is not necessary to adjust the valve at the time of sending and receiving the gas, and when using the gas, the gas pressure can be constantly maintained regardless of the amount of the stored gas. This is an invention that provides a truly remarkable effect, for example, by providing extremely convenience.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows one embodiment of the present invention, and is a longitudinal sectional front view when a T fender and a piston in a gas holder are located in an initial state. FIG. 2 is a longitudinal sectional front view when the T fender and the piston are raised to a position 50% from the gas amount fed into the gas holder from the state of FIG. 1; 3 is a vertical sectional front view when the T fender and the piston are raised from the state of FIG. 2 to a gas full position. FIG. 4 shows a conventional gas holder, and shows T in the gas holder.
FIG. 4 is a longitudinal sectional front view when the fender and the piston are located in an initial state. FIG. 5 is a vertical cross-sectional front view when the piston is raised from the state of FIG. 4 into the gas holder to a position where the piston comes into contact with a projection provided on the T fender. 6 is a vertical sectional front view showing a state in which the T fender has risen from the state of FIG. 5 and has reached a position where the gas amount reaches a substantially full amount. [Description of Signs] 2 Gas tank 2b Side plate 3 T fender 4 Piston 5 Seal film 5a Outer seal film 5b Inner seal film 6 Balancing device 7 Cylindrical body 20 Gas holder 21 Long hole 22 Arm 23 Bracket 24 Pulley 25 Projection 26 Rope

Claims (1)

Claims 1. A gas tank having a bottom plate and a side plate made of a steel plate, a T-fender moving up and down along an inner surface of the side plate of the gas tank, and disposed on an inner surface of the T-fender. A piston that moves up and down, and further comprises a side plate of the gas tank, a T-fender, a seal film interposed between the T-fender and the piston to maintain airtightness, and a piston balancing device. In a multi-stage dry seal gas holder, a pulley is provided at an upper end portion of the T fender, and an arm is protruded from the piston above the pulley, while a protrusion protrudes near an upper end inside the side plate of the gas tank. When the rope is hung between the projection and the arm via the pulley to feed gas from the lower surface of the gas holder or to send out the fed gas, the same gas pressure is applied. Multi-stage dry seal gas holder, characterized in that it is formed so as to allow delivery entrance operation of the gas Te.