JP5167937B2 - Water-containing gas holder - Google Patents

Description

The present invention relates to a water-containing gas holder, and more particularly to a water-containing gas holder for keeping a gas pressure in the holder constant.

  For example, in an ironworks, when operating using a coke oven, a blast furnace, a converter, etc., by-product gases, such as coke oven gas (COG), blast furnace gas (BFG), and converter gas (LDG), are generated. These gases can be reused as fuel gas. Thus, the generated gas is temporarily stored in the gas holder, taken out as necessary, mixed with other gases, and used as a fuel gas for appropriate purposes. A gas holder for storing such a gas is disposed on a piping system that connects a gas generation location and a usage location. Such gas holders are generally roughly classified into two types: dry gas holders and water-containing gas holders.

  The water-containing gas holder is a gas holder provided with a water seal mechanism between gas tanks in order to seal the gas storage space. Among them, the multi-tank type water-containing gas holder is a gas tank into which a plurality of gas tanks (for example, an inner tank, a middle tank, and an outer tank) forming a gas storage space are stacked in the bottom water tank. Each gas tank has a structure that can be moved up and down in accordance with the inflow and outflow.

  In the water-containing gas holder having such a structure, when the gas storage amount in the holder increases, each gas tank rises in the order of the inner tank, the middle tank, and the outer tank, while when the gas storage amount decreases, It descends in the order of tank, middle tank, and inner tank. At this time, since the gas in the holder is subjected to a pressure corresponding to the total mass of the raised gas tank, the gas pressure in the holder fluctuates according to the raising / lowering operation of each gas tank, and the gas tank rises. Every time it grows. That is, when the amount of gas stored in the holder increases, the inner tank first rises, and then the middle tank and the outer tank rise sequentially, but only the inner tank rises (the middle tank and the outer tank are bottomed). Gas pressure becomes a low pressure corresponding to the mass of the inner tank only, while when all of the inner tank, the middle tank and the outer tank are rising, the gas pressure is changed to the inner tank, the middle tank and the outer tank. High pressure corresponding to the total mass of the tank.

  Since such a water-containing gas holder is connected to a gas piping system, fluctuations in the gas pressure in the water-containing gas holder can affect the location where the gas is generated and the location where it is used. For this reason, it is desired to minimize the fluctuation of the gas pressure in the holder.

  As a technique for preventing such gas pressure fluctuations, for example, in Patent Document 1, in order to keep the gas pressure in the wet gas holder constant, water is supplied to and drained from an adjustment water tank disposed at the top of the inner tank. Thus, there is disclosed a pressure adjusting device that controls the total mass of the gas tank to adjust the gas pressure to be constant. Further, in Patent Document 2, in a multistage dry seal gas holder, a gas pressure in the holder is made constant by hanging a rope between a gas tank side plate and a piston via a pulley provided in a T fender. A structure is disclosed.

Japanese Utility Model Publication No. 6-14696 JP 2003-114000 A

  However, the wet gas holder described in Patent Document 1 controls the mass of the gas tank by supplying and draining water to and from the adjustment water tank. In this way, the mass control is performed using a heavy object different from the gas holder main body. In such a case, there is a problem that it takes time to store / drain water in the adjustment water tank. For this reason, when the number of steps of the rising gas tank changes, there is a drawback that the gas pressure fluctuation in the holder is repeated when the raising and lowering of the gas tank is repeated.

  Further, the gas pressure adjusting structure of the dry gas holder described in Patent Document 2 is not applicable to a water-containing gas holder in which the overall structure and the seal structure of the holder are greatly different.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to keep the gas pressure in the water-containing gas holder constant regardless of the ascending / descending operation of each gas tank. It is an object of the present invention to provide a new and improved water-containing gas holder .

In order to solve the above-described problems, according to a certain aspect of the present invention, in a water-containing gas holder including an outer tub and an inner tub arranged so as to freely move up and down according to the inflow and outflow of gas, the outer tub does not settle down. A suspension mechanism for suspending the outer tub from the inner tub, the suspending mechanism is a wire for suspending the outer tub from the inner tub, and a winch installed in the inner tub and capable of winding or feeding the wire. When it is detected that the outer tank is lowered to a predetermined first height or less, the wire is wound by the winch, and when it is detected that the outer tank is raised to the predetermined second height or more, the wire is sent out from the winch. A water-containing gas holder is provided.

  With this configuration, when the outer tub and the inner tub are not engaged, the outer tub is suspended from the inner tub by the suspension mechanism so that the outer tub is lowered and does not settle down. Thereby, since the mass of an outer tank can always be applied to an inner tank, the gas pressure in a holder can be maintained at the fixed gas pressure according to the total mass of an inner tank and an outer tank.

Moreover , when it is detected by the said structure that the outer tank fell to below predetermined 1st height, an outer tank can be wound up and it can suspend from an inner tank by winding up a wire with a winch. Further, when it is detected that the outer tank has risen to a predetermined second height or more, the outer tank hung from the inner tank is unwound by sending out a wire by a winch, and the inner tank and the outer tank are Can be separated.

  The suspension mechanism further includes a slack detection sensor for detecting the slack of the wire, and the control device stops the wire feed when the slack detection sensor detects the slack of the wire during the wire feed. You may control so. With this configuration, when the outer tub is suspended from the inner tub by the wire and the outer tub is engaged with the inner tub by the seal cup mechanism, the wire is loosened, so that the wire feeding can be stopped. it can.

In order to solve the above-described problem, according to another aspect of the present invention, in a water-containing gas holder including an outer tank, a middle tank, and an inner tank, which are arranged to freely move up and down according to gas inflow and outflow, A first suspension mechanism that suspends the outer tank from the inner tank so that the tank does not bottom, and a second suspension mechanism that suspends the middle tank from the inner tank so that the middle tank does not bottom. The first suspension mechanism includes a first wire for suspending the outer tub on the inner tub, a first winch installed in the inner tub and capable of winding or feeding the first wire, and the outer tub having a predetermined first. When it is detected that the height has dropped below the height, the first wire is wound up by the first winch, and when it is detected that the outer tub has risen to the predetermined second height or more, the first wire is sent out from the first winch. A second control mechanism that suspends the middle tank from the inner tank. A second winch that is installed in the inner tub and capable of winding or delivering the second wire, and the second winch detects that the middle tub has been lowered to a predetermined third height or less. And a second control device for controlling to send out the second wire from the second winch when the second wire is wound up and when it is detected that the middle tank has risen to a predetermined fourth height or more. A water-containing gas holder is provided.

  With this configuration, when the outer tub and the inner tub are not engaged, the outer tub can be suspended from the inner tub by the suspension mechanism so that the outer tub descends and does not settle down. When not engaged, the middle tank can be suspended from the inner tank by the suspension mechanism so that the middle tank descends and does not settle down. Thereby, since the mass of an outer tank and a middle tank can be always applied to an inner tank, the gas pressure in a holder can be maintained at the fixed gas pressure according to the total mass of an inner tank, a middle tank, and an outer tank.

In addition , when it is detected that the outer tub has been lowered to a predetermined first height or less by the above configuration, the outer tub is wound up and suspended from the inner tub by winding the first wire with the first winch. Can do. Further, when it is detected that the outer tub has risen to a predetermined second height or higher, the first wire is sent out by the first winch to unwind the outer tub suspended from the inner tub, The outer tank can be separated. Similarly, when it is detected that the middle tank is lowered to a predetermined third height or less, the middle tank can be wound up and suspended from the inner tank by winding the second wire with the second winch. Further, when it is detected that the middle tank has risen to a predetermined fourth height or higher, the second wire is sent out by the second winch to unwind the middle tank hung from the inner tank, The middle tank can be separated. The first height and the third height may be the same height or different heights. Further, the second height and the fourth height may be the same height or different heights.

  The first suspension mechanism further includes a first slack detection sensor that detects slack of the first wire, and the first control device uses the first slack detection sensor to send the first wire while the first wire is being fed. When the slack of the first wire is detected, control is performed to stop the feeding of the first wire, and the second suspension mechanism further includes a second slack detecting sensor for detecting slack of the second wire, and the second control device includes: When the second wire slack is detected by the second slack detection sensor while the second wire is being fed, the second wire may be controlled to stop being fed. With such a configuration, when the outer tub is engaged with the inner tub by the seal cup mechanism during the lowering of the outer tub suspended from the inner tub by the first wire, the first wire is loosened. Sending can be stopped. Similarly, when the outer tub is engaged with the inner tub by the seal cup mechanism during the lowering of the middle tub suspended from the inner tub by the second wire, the second wire is loosened. Can be stopped.

  As described above, according to the present invention, the gas pressure in the water-containing gas holder can be kept constant regardless of the raising / lowering operation of each gas tank.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

(1. Basic structure of water-containing gas holder)
Initially, with reference to FIG. 1, the structure of the water-containing gas holder which concerns on one Embodiment of this invention is demonstrated. FIG. 1 is a schematic diagram showing a schematic configuration of a water-containing gas holder 10 according to the present embodiment. FIG. 1 shows a state in which the gas storage amount inside the water-containing gas holder 10 is the maximum amount, and all the gas tanks (the inner tank 13, the inner tank 14, and the outer tank 15) rise to the maximum. ing.

  First, the basic structure of the water-containing gas holder 10 according to the present embodiment will be described in detail. As shown in FIG. 1, the water-containing gas holder 10 according to the present embodiment is an example of a multi-tank water-containing gas holder including a plurality of gas tanks 13, 14, and 15. 13, a three-tank water-containing gas holder provided with an inner tank 14 and an outer tank 15). The water-containing gas holder 10 is provided with a bottom 11, a water tank 12 for storing water on the bottom 11, an outer tank 15 provided to be movable up and down inside the water tank 12, and a movable up and down inside the outer tank 15. A plurality of middle tanks 14, an inner tank 13 provided inside the middle tank 14 so as to be movable up and down, and a plurality of standing tanks around the water tank 12 to guide the raising and lowering of the outer tank 15, the middle tank 14, and the inner tank 13. The base pillar 16 and the gas pipe 17 are provided.

  The water tank 12 is a water tank that is disposed at the bottom 11 of the water-containing gas holder 10 and stores water therein. The water in the water tank 12 plays a role of a gas seal. This water tank 12 is comprised from the bottom part 11 which is a substantially disc shaped bottom plate, and the substantially cylindrical side wall without a lid, for example. At the upper end of the side wall of the water tank 12, a locking edge portion 12a is provided projecting in the inner circumferential direction. This locking edge portion 12 a locks the outer tank stopper 26 projecting from the lower portion of the outer peripheral surface of the outer tub 15, so that the outer tub 15 can be prevented from detaching upward from the water tank 12.

  The outer tank 15 is a substantially cylindrical gas tank smaller than the inner diameter of the water tank 12, and the middle tank 14 is a substantially cylindrical gas tank smaller than the inner diameter of the outer tank 15. The inner tank 13 is a gas tank having a substantially cylindrical cap shape that is slightly smaller than the inner diameter of the middle tank 14 and has no top and no bottom. The outer tank 15, the intermediate tank 14, and the inner tank 13 are connected as a whole so as to be extendable in the vertical direction and function as a gas tank, and form a gas storage space therein. In the following description, the inner tank 13, the middle tank 14, and the outer tank 15 may be collectively referred to as gas tanks 13-15.

  Further, a water-sealed seal cup mechanism is provided at these connecting portions so as not to leak gas from the gaps between the gas tanks 13 to 15. That is, on the inner peripheral side of the upper end portion of the outer tub 15, a dip 15a that engages with the cup 14b formed on the outer peripheral side of the lower end portion of the intermediate tub 14 is formed. A dip 14 a that engages with a cup 13 b formed on the outer peripheral side of the lower end portion of the inner tank 13 is formed. Each of the cups 13b and 14b has a substantially U-shaped cross section on the outer peripheral side of the lower end portion of the corresponding member, and has an upper U-shaped opening. Therefore, the cups 13b and 14b can scoop up and store the water in the water tank 12 therein. On the other hand, the deps 14a and 15a have a substantially U-shaped cross section on the inner peripheral side of the upper end of the corresponding member, and have a U-shaped opening on the lower side opposite to the cups 13b and 14b. In this manner, the deps 14a and 15a and the cups 13b and 14b have shapes that engage with each other. Of these, the cup 14b and the dip 15a are formed at the connecting portion between the outer tub 15 and the middle tub 14, and the cup 13b and the dip 14a are formed at the linking portion between the middle tub 14 and the inner tub 13. The upper part functions as a hook and engages with each other. As a result, when the inner tank 13 and the middle tank 14 rise above the water surface of the water tank 12, the cup 14b at the lower end of the middle tank 14 engages with the dep 15a at the upper end of the outer tank 15, and the inner tank 13 The cup 13b at the lower end engages with the dip 14b at the upper end of the middle tank 14 in a state where water is stored. Therefore, the connecting part between the outer tank 15 and the middle tank 14 and the connecting part between the middle tank 14 and the inner tank 13 serve as a sealing mechanism of a water-sealed structure, preventing gas leakage from the connecting part, The internal space (gas storage space) of the tanks 13 to 15 can be made airtight.

  When the inner tank 13 rises above a predetermined height, the cup 13b of the inner tank 13 and the dep 14a of the middle tank 14 engage with each other, so that the middle tank 14 is suspended from the inner tank 13 by the seal cup mechanism. The weight of the middle tank 14 can be hung on the inner tank 13. Further, when the middle tank 14 in addition to the inner tank 13 rises to a predetermined height or more, the cup 14b of the middle tank 14 and the dip 15a of the outer tank 15 engage with each other. It is possible to hang from the tank 14 and hang the own weight of the outer tank 15 on the inner tank 13 via the middle tank 14.

  A plurality of base pillars 16 are erected vertically around the water tank 12. For example, the plurality of base pillars 16 are arranged around the water tank 12 at equal intervals. In FIG. 1, only two base pillars 16 that are symmetrically arranged are schematically illustrated, but it is needless to say that two or more base pillars 16 may be provided. The base column 16 has a function of guiding the vertical movement of the outer tank 15, the middle tank 14, and the inner tank 13. For this purpose, for example, at the upper end of the outer peripheral surface of the inner tank 13, the middle tank 14, and the outer tank 15, respectively, guide arms 20, 22, 24 extending in a substantially horizontal direction toward the respective base pillars 16; Guide rollers 21, 23, and 25 attached to the tips of the guide arms 20, 22, and 24 are provided. When the gas tanks 13 to 15 are moved up and down, the guide rollers 21, 23, and 25 of the guide arms 20, 22, and 24 are rotated in contact with the base pillar 16, so that the gas tanks 13 to 15 are moved by the base pillar 16. It can be moved up and down smoothly and stably while being guided. In addition, a lower guide roller 27 that protrudes from the lower surface of the outer tub 15 and in contact with the inner surface of the water tub 12 protrudes. The lower guide roller 27 also stabilizes the ascending / descending operation of the outer tub 15.

  The gas pipe 17 extends through the center of the bottom 11 of the water tank 12, and the end opening of the gas pipe 17 is located in the gas storage space above the water level of the stored water in the water tank 12. doing. The gas pipe 17 is connected to a gas generation location (gas supply source) and a gas usage location. The gas pipe 17 is a common pipe for allowing the gas to flow into the gas tanks 13 to 15 of the water-containing gas holder 10 (hereinafter also referred to as “inside the holder”) and for causing the gas in the holder to flow out. It is. In the illustrated example, only one gas pipe 17 is provided. However, the present invention is not limited to this example, and a plurality of gas pipes may be provided. For example, you may provide two piping, the gas supply pipe | tube for flowing gas into a holder from a gas generation location, and the gas discharge pipe | tube for discharging | emitting gas from the inside of a holder and supplying it to a gas use location.

  In the water-containing gas holder 10 having the above-described configuration, when gas flows in from the gas pipe 17, the gas tanks 13 to 15 are sequentially raised in accordance with the inflow amount to increase the gas storage space. Moreover, at the time of discharge | emission of gas, according to the outflow amount of gas, each gas tank 13-15 descend | falls sequentially, and gas storage space is reduced. Examples of the gas stored in the water-containing gas holder 10 include by-product gases such as converter gas (LDG), coke oven gas (COG), and blast furnace gas (BFG) mainly composed of CO, or natural gas. Any gas may be used. In order to store gas, airtightness is very important, and if a gas leak occurs, it can have a serious impact on the environment and safety. In order to maintain this airtightness, the water-containing gas holder 10 uses a water-sealed seal mechanism that seals with water in the seal cup mechanism (however, other liquids can also be used) as described above. The water-sealed seal mechanism of the water-containing gas holder 10 is superior in durability to a mechanical seal mechanism used in a dry gas holder or the like, and is suitable for storing frequently used gas.

  By the way, in the water-containing gas holder 10 of the said structure, as shown in FIG. 1, when there is much gas storage amount, since all the gas tanks 13-15 are rising, the mass of all the gas tanks 13-15 is The gas pressure inside the holder increases due to the gas inside the holder. On the other hand, when the amount of stored gas is small, if the middle tank 14 or the outer tank 15 descends and settles (means landing on the bottom 11), the bottom of the middle tank 14 or the outer tank 15 that has landed. The gas pressure in the holder is reduced by the mass. Thus, when the gas pressure in the holder fluctuates depending on the amount of gas stored, as described above, the gas pressure at the gas generation point and the gas use point communicated by the gas pipe 17 also fluctuates, which causes various problems. End up. Therefore, it is required to always keep the gas pressure in the holder constant.

  Therefore, the inventors of the present application pay attention to the point that the gas pressure fluctuates because the inner tank 14 or the outer tank 15 is settled, and even if diligent efforts are made to reduce the gas storage amount in the holder, Regardless of the amount of gas stored in the holder, if the mass (self-weight) of the middle tank 14 or the outer tank 15 is always applied to the inner tank 13 so that the middle tank 14 or the outer tank 15 does not bottom. It has been found that the gas pressure in the holder can always be kept constant because the mass of the gas tanks 13 to 15 can always be applied to the gas in the holder. Further, the inventors of the present application have provided a suspension mechanism for suspending the middle tank 14 or the outer tank 15 in the inner tank 13 based on such knowledge, and the middle tank 14 or the outer tank 15 is lowered when the gas storage amount is reduced. If the middle tank 14 or the outer tank 15 is suspended from the inner tank 13 by the suspension mechanism before the bottom 11 is settled, the middle tank 14 or the outer tank 15 is not grounded, The inventors came up with a configuration in which the entire mass can be hung on the inner tank 13.

(2. Structure of suspension mechanism)
Below, with reference to the said FIG.1 and FIG.2, the structure of the suspension mechanism for keeping the gas pressure in a holder always constant in the water-containing-type gas holder 10 concerning this embodiment is demonstrated. FIG. 2 is a plan view schematically showing an upper configuration of the inner tank 13 of the water-containing gas holder 10 according to the present embodiment.

  As shown in FIGS. 1 and 2, the water-containing gas holder 10 according to the present embodiment includes a first suspension mechanism that suspends the outer tub 15 from the inner tub 13 by a wire 51, and an inner tub 14 by a wire 31. A second suspension mechanism suspended from the tank 13.

(2.1 Structure of the first suspension mechanism for the outer tank)
First, the first suspension mechanism will be described. The first suspension mechanism is a mechanism for hanging the outer tub 15 on the inner tub 13 and hanging the mass of the outer tub 15 on the inner tub 13 so that the outer tub 15 does not bottom when the gas storage amount is small. It is. The first suspension mechanism includes a winch 50 (corresponding to the first winch), a wire 51 (corresponding to the first wire), a control panel 52 (corresponding to the first control device), and a winding. Detachable device 53, power and control cable 54, pulleys 55a, 55b and 55c for power and control cable 54, winding ON switch 56, lowering ON switch 57, winding / lowering OFF switch 58, and switch A kicker 59, a winding ON switch signal cable 60, a winding ON switch signal cable 61, and a winding / lowering OFF switch signal cable 62 are provided. Hereinafter, each part of the first suspension mechanism will be described.

  The winch 50 is a winder capable of winding / feeding the wire 51 for suspending the outer tank 15 to the inner tank 13. One end of the wire 51 is fixed to the upper end portion of the outer tub 15, and the other end is fixed to the winding roller of the winch 50. The winch 50 is disposed at the top edge of the inner tub 13, and the wire 51 fed out from the winch 50 is suspended vertically from a pulley 50 a disposed adjacent to the winch 50, so that the outer tub 50 15 is connected to the upper edge (Dep 15a). The pulley 50 a is a position protruding outward from the top outer edge portion of the inner tub 13, and is disposed at a position corresponding to the position directly above the outer tub 15. For this reason, the wire 51 that connects the pulley 50a and the outer tub 15 extends straight downward and does not contact the outer peripheral surfaces of the inner tub 13 and the middle tub 14. The winch 50 and the wire 51 can suspend the outer tub 15 from the top of the inner tub 13.

  Further, as shown in FIG. 2, at least three or more winches 50 are arranged at equal intervals along the circumferential direction at the top of the inner tank 13, and the wires 51 are sent out from the winches 50, respectively. It is connected to the upper end of the outer tub 15. By the plurality of winches 50 and the wires 51, the outer tub 15 can be stably suspended without being inclined.

  The control panel 52 controls the winding / lowering operation of the winch 50. The winding operation of the winch 50 means an operation of lifting the outer tub 15 suspended by the wire 51 relative to the inner tub 13 when the winch 50 winds the wire 51. On the other hand, the lowering operation of the winch 50 means an operation of lowering the outer tub 15 suspended by the wire 51 relative to the inner tub 13 when the winch 50 sends out the wire 51. The control panel 52 controls the winch 50 according to the height position of the outer tub 15 by transmitting power and control signals to the winch 50.

  The control panel 52 and the winch 50 are connected via a power and control cable 54. The power and control cable 54 is a cable for transmitting power (electric power) for driving the winch 50 and a control signal for the hoisting / lowering operation of the wire 51 from the control panel 52 to the winch 50. This power and control cable 54 is connected to a winch via a pulley 55 a provided near the control panel 52, a pulley 55 b provided on the upper part of the base column 16, a pulley 55 c provided on the holder ceiling, and a winder 53. 50. The winder 53 includes a conical main body portion and a guide ring disposed immediately above the main body portion. The winder 53 automatically winds / feeds the power and control cable 54 inserted through the guide ring from above onto the conical surface of the conical main body using its own weight. Have By providing this winder 53, even if the inner tub 13 moves up and down, surplus power and control cable 54 can be wound around and stored in the winder 53, so that the cable 54 interferes with the operation of other devices. It can be prevented from becoming trapped. Further, as shown in FIG. 2, the power and control cable 54 on the outlet side of the winder 53 is branched into, for example, three cables 54a, 54b, 54c and connected to the three winches 50, respectively. .

  The operation of the winch 50 is controlled by transmitting power and control signals from the control panel 52 to the winch 50 using the power and control cable 54 arranged in this way. In this control, the control panel 52 determines the winch 50 according to the height position of the outer tub 15 based on the detection result by the detection device (corresponding to the first detection device) that detects the height position of the outer tub 15. Control the hoisting / lowering operation.

  Here, the structural example of the detection apparatus for detecting the height position of the outer tank 15 is demonstrated. In the water-containing gas holder 10 according to the present embodiment, the detection device includes, for example, a winding ON switch 56, a lowering ON switch 57, a winding / lowering OFF switch 58, and a switch kicker 59.

  The winding ON switch 56 is a switch for turning on (starting operation) the winding operation of the outer tub 15 by the winch 50 when the outer tub 15 is lowered to a predetermined first height or less. The lowering ON switch 57 is a switch for turning on (starting operation) the lowering operation of the outer tub 15 by the winch 50 when the outer tub 15 rises to a predetermined second height or more. The hoisting / lowering OFF switch 58 turns off the hoisting operation when the outer tub 15 rises to a predetermined height (fifth height) higher than the first height during the hoisting operation by the winch 50. When the outer tub 15 is lowered to a predetermined height (fifth height) lower than the second height during the lowering operation by the winch 50, the lowering operation is turned off (operation stop). It is a switch to do.

  Here, the “first height (winding start position)” is a position that is higher by a predetermined height (for example, about 200 mm) than the height position at which the outer tub 15 reaches the bottom. Further, “second height (winding start position)”> “fifth height (winding / lowering stop position)”> “first height (winding start position)”.

  The winding ON switch 56, the lowering ON switch 57, and the winding / lowering OFF switch 58 are disposed on any one of the base pillars 16. These switches 56, 57, 58 are in descending order of the installation position, the lowering ON switch 57 (second height), the winding / lowering OFF switch 58 (fifth height), and the winding ON switch 56 (first 1 height). On the other hand, the switch kicker 59 is mounted on the distal end side of the guide arm 24 of the outer tub 15, for example. The switches 56, 57, 58 are connected to the control panel 52 via a winding ON switch signal cable 60, a lowering ON switch signal cable 61, and a winding / lowering OFF switch signal cable 62.

  With this configuration, the outer tub 15 moves up and down in response to the gas flow into and out of the holder, and the guide arm 24 of the outer tub 15 moves to the installation positions of the switches 56, 57, 58 (the predetermined first and second predetermined above). The fifth height position), the switch kicker 59 comes into contact with the switches 56, 57, 58, so that the switches 56, 57, 58 are turned on. As a result, the switches 56, 57, 58 are turned on to the control panel 52 via the cables 60, 61, 62 (that is, the outer tub 15 has a predetermined first, second, fifth. A signal is transmitted indicating that the height has been reached. In this way, the control panel 52 can detect that the outer tub 15 has reached a predetermined height position using the detection device comprising the switches 56, 57, 58 and the switch kicker 59. .

  Here, with reference to FIG. 3, the height positional relationship of each switch 56,57,58 which comprises the detection apparatus concerning this embodiment is demonstrated in detail. In the example of FIG. 1, the winding OFF switch and the lowering OFF switch are integrally configured by one winding / lowering OFF switch 58 and arranged at the same height position (fifth height). As shown in the example of FIG. 3, the winding OFF switch 58a and the winding OFF switch 58b can be separated and arranged at different heights (fifth height and seventh height).

  As shown in FIG. 3, for example, a lowering ON switch 57 is arranged at the highest second height, a lowering OFF switch 58b is arranged at the next highest seventh height, and the fifth highest next. A winding OFF switch 58a is disposed at the height, and a winding ON switch 56 is disposed at the lowest first height. That is, the height of each switch 57, 58b, 58a, 56 can be, for example, second height> seventh height> fifth height> first height. Therefore, when the outer tub 15 is lowered, the switch kicker 59 attached to the outer tub 15 contacts the lowering ON switch 57, the lowering OFF switch 58b, the lowering OFF switch 58a, and the lowering ON switch 56 in this order.

  In addition, the height order of each switch 57, 58b, 58a, 56 is not limited to the example of FIG. If the height (second height) of the winding ON switch 57 is the highest and the height (first height) of the winding ON switch 56 is the lowest, the height (seventh height) of the winding OFF switch 58b is set. There is no limitation on the height (fifth height) of the winding OFF switch 58a. For example, the winding ON switch 57 (second height), the winding OFF switch 58a (fifth height), the winding OFF switch 58b (seventh height), and the winding ON switch 56 (first height) from the top. May be arranged.

  In the above, the specific example of the detection apparatus which detects the height position of the outer tank 15 was demonstrated. The control panel 52 controls the operation of the winch 50 based on the height position of the outer tub 15 detected by the detection device. For example, when the outer tub 15 descends in response to the outflow of gas from the holder, the control panel 52 detects that the outer tub 15 has been lowered to a predetermined first height or less by the detection device, and thereby the winch 50 Control is performed to wind up the wire 51 and wind up the outer tub 15. Such a winding operation can prevent the outer tub 15 from bottoming. Further, the wound outer tub 15 rises to a predetermined fifth height (however, in the example of FIG. 3, the fifth height corresponding to the winding OFF switch 58a) corresponding to the winding / lowering OFF switch 58. When it is detected, the control panel 52 stops the winding of the wire 51 by the winch 50 and stops the winding operation of the outer tub 15. Thereby, it can prevent winding up the outer tank 15 more than necessary.

  On the other hand, when the outer tub 15 is raised in response to the inflow of gas into the holder, the control panel 52 detects that the outer tub 15 has been raised to a predetermined second height or more by the detection device, and then the winch 50. Then, the wire 51 is fed out and the outer tank 15 is controlled to be lowered. By such a lowering operation, the inner tank 13 can be raised and can take a relatively high position with respect to the outer tank 15, and the gas storage space in the holder can be increased. Further, the wound outer tank 15 is equal to or lower than a predetermined fifth height corresponding to the winding / lowering OFF switch 58 (in the example of FIG. 3, the seventh height corresponding to the lowering OFF switch 58b). When the control panel 52 detects that the outer tank 15 has been lowered, the control panel 52 stops the feeding of the wire 51 by the winch 50 and stops the lowering operation of the outer tub 15. Thereby, it is possible to prevent the outer tank 15 from being unwound unnecessarily and hunting with the wind-up ON switch 56.

  The winch 50 includes, for example, a first slack detection sensor (not shown) that detects slack of the wire 51, and the slack of the wire 51 (that is, no tension is generated in the wire 51). ). As described above, when the outer tub 15 is suspended from the inner tub 13 by the wire 51, the weight of the outer tub 15 is applied to the wire 51, so that the tension is generated in the wire 51 and no slack is generated. . On the other hand, when the outer tub 15 is not suspended from the inner tub 13 by the wire 51 (for example, the outer tub 15, the inner tub 14 and the inner tub 13 are engaged with each other by the seal cup mechanism including the above-described dip and cup. When the outer tub 15 is suspended from the inner tub 13 via the middle tub 14), the wire 51 is loosened because no tension is generated in the wire 51. The first slack detection sensor provided in the winch 50 detects the slack of the wire 51 and transmits it to the control panel 52 via the power and control cable 54.

  The control panel 52 does not perform the lowering operation of the outer tub 15 by the winch 50 while the slack of the wire 51 is detected by the first slack detection sensor (that is, no tension of the wire 51 is detected). Control (continue stopping of the lowering operation). Further, when the slack of the wire 51 is detected by the first slack detection sensor during the operation of lowering the outer tub 15 by the winch 50 (while the wire 51 is being fed), the control panel 52 sends the wire 51 out. Control to stop and stop the lowering operation. The slack of the wire 51 is detected during the lowering operation in this way when the inner tank 13 and the middle tank 14 are raised and the cup 14b of the middle tank 14 and the dip 15a of the outer tank 15 are engaged. It is. In this case, since the outer tank 15 is suspended from the inner tank 13 via the middle tank 14 by the seal cup mechanism, the outer tank 15 does not descend without being suspended by the wire 51. Therefore, in such a case, the control panel 52 controls to stop the wire 51 feeding operation.

(2.2 Structure of second suspension mechanism for middle tank)
Next, the second suspension mechanism will be described. The second suspension mechanism is a mechanism for hanging the middle tank 14 on the inner tank 13 and hanging the mass of the middle tank 14 on the inner tank 13 so that the middle tank 14 does not bottom when the gas storage amount is small. It is. The second suspension mechanism includes a winch 30 (corresponding to the second winch), a wire 31 (corresponding to the second wire), a control panel 32 (corresponding to the second control device), and a winding. Detacher 33, power and control cable 34, pulleys 35a, 35b and 35c for power and control cable 34, hoisting ON switch 36, lowering ON switch 37, hoisting / lowering OFF switch 38, and switch A kicker 39, a winding ON switch signal cable 40, a winding ON switch signal cable 41, and a winding / lowering OFF switch signal cable 42 are provided.

  The second suspension mechanism is different from the first suspension mechanism in that the middle tank 14 is suspended from the inner tank 13 instead of the outer tank 15, and the other functional configurations are the same. It is substantially the same as each part of the mechanism. Hereinafter, each part of the second suspension mechanism will be schematically described.

  The winch 30 is a winder capable of winding / feeding out a wire 31 for suspending the middle tank 14 from the inner tank 13. One end of the wire 31 is fixed to the upper end of the middle tank 14, and the other end is fixed to the winding roller of the winch 30. The winch 30 is disposed at the edge of the top of the inner tank 13, and the wire 31 fed from the winch 30 is suspended vertically from a pulley 30 a disposed adjacent to the winch 30, 14 is connected to the upper edge (dep 14a). The pulley 30 a is a position protruding outward from the top outer edge of the inner tank 13, and is disposed at a position corresponding to the position directly above the middle tank 14. For this reason, the wire 31 that connects the pulley 30a and the middle tank 14 extends straight downward and does not contact the outer peripheral surfaces of the inner tank 13 and the middle tank 14. With the winch 30 and the wire 31, the middle tank 14 can be suspended from the top of the inner tank 13.

  As shown in FIG. 2, at least three or more winches 30 are arranged at equal intervals along the circumferential direction at the top of the inner tank 13, and the wires 31 are sent out from the winches 30. It is connected to the upper end of the middle tank 14. The plurality of winches 30 and wires 31 can stably suspend the middle tank 14 without tilting.

  The control panel 32 controls the hoisting / lowering operation of the winch 30. The winding operation of the winch 30 means an operation of raising the middle tank 14 suspended by the wire 31 relative to the inner tank 13 by winding the wire 31 with the winch 30. On the other hand, the lowering operation of the winch 30 means an operation of lowering the middle tank 14 suspended by the wire 31 relative to the inner tank 13 by sending out the wire 31 from the winch 30. The control panel 32 controls the winch 30 according to the height position of the middle tank 14 by transmitting power and control signals to the winch 30.

  The control panel 32 and the winch 30 are connected via a power and control cable 34. The power and control cable 34 is a cable for transmitting power (electric power) for driving the winch 30 and a control signal for the hoisting / lowering operation of the wire 31 from the control panel 32 to the winch 30. The power and control cable 34 is connected to a winch via a pulley 35 a provided near the control panel 32, a pulley 35 b provided on the upper portion of the base column 16, a pulley 35 c provided on the holder ceiling, and a winder 33. 30. The winder 33 includes a conical main body portion and a guide ring disposed immediately above the main body portion. The winder 33 automatically winds / feeds the power and control cable 34 inserted through the guide ring from above onto the conical surface of the conical main body using the weight of the cable 34. Have By providing this winder 33, even if the inner tub 13 moves up and down, excess power and control cable 34 can be wound around and stored in the winder 33, so that the cable 34 interferes with the operation of other devices. It can be prevented from becoming trapped. As shown in FIG. 2, the power and control cable 34 on the exit side of the winder 33 is branched into, for example, three cables 34 a, 34 b, 34 c and connected to each of the three winches 30. .

  The operation of the winch 30 is controlled by transmitting power and control signals from the control panel 32 to the winch 30 using the power and control cable 34 arranged in this way. In this control, the control panel 32 determines the winch 30 according to the height position of the middle tank 14 based on the detection result by the detection device (corresponding to the second detection device) that detects the height position of the middle tank 14. Control the hoisting / lowering operation.

  Here, the structural example of the detection apparatus for detecting the height position of the middle tank 14 is demonstrated. In the water-containing gas holder 10 according to the present embodiment, the detection device includes, for example, a winding ON switch 36, a lowering ON switch 37, a winding / lowering OFF switch 38, and a switch kicker 39.

  The winding ON switch 36 is a switch for turning on (starting operation) the winding operation of the middle tank 14 by the winch 30 when the middle tank 14 is lowered to a predetermined third height or less. The lowering ON switch 37 is a switch for turning on (starting operation) the lowering operation of the intermediate tank 14 by the winch 30 when the intermediate tank 14 rises to a predetermined fourth height or more. The winding / lowering OFF switch 38 turns off the winding operation when the middle tank 14 is raised to a predetermined height (sixth height) higher than the third height during the winding operation by the winch 30 (operation). In addition, when the middle tank 14 is lowered to a predetermined height (sixth height) lower than the fourth height during the lowering operation by the winch 30, the lowering operation is turned off (operation stop). It is a switch to do.

  Here, the “third height (winding start position)” is a position that is higher by a predetermined height (for example, about 200 mm) than the height position at which the middle tank 14 bottoms. Further, “fourth height (winding start position)”> “sixth height (winding / lowering stop position)”> “third height (winding start position)”.

  The winding ON switch 36, the lowering ON switch 37, and the winding / lowering OFF switch 38 are disposed on any one of the base pillars 16. These switches 36, 37, and 38 are, in order from the higher installation position, the lowering ON switch 37 (fourth height), the winding / lowering OFF switch 38 (sixth height), and the winding ON switch 36 (first (3 height). On the other hand, the switch kicker 39 is mounted, for example, on the distal end side of the guide arm 22 of the middle tank 14. Each switch 36, 37, 38 is connected to the control panel 32 via a winding ON switch signal cable 40, a lowering ON switch signal cable 41, and a winding / lowering OFF switch signal cable 42, respectively.

  With this configuration, the middle tank 14 moves up and down in response to the inflow and outflow of gas into the holder, and the guide arm 22 of the middle tank 14 moves to the installation positions of the switches 36, 37, 38 (predetermined third, fourth). When the position reaches the sixth height position), the switch kicker 39 contacts the switches 36, 37, 38, so that the switches 36, 37, 38 are turned on. As a result, each switch is turned on from the switches 36, 37, 38 to the control panel 32 via the cables 40, 41, 42 (that is, the middle tank 14 has a predetermined third, fourth, sixth). A signal is transmitted indicating that the height has been reached. In this manner, the control panel 32 can detect that the middle tank 14 has reached a predetermined height position using the detection device including the switches 36, 37, and 38 and the switch kicker 39. .

  As for the detecting device for detecting the height position of the intermediate tank 14 as shown in FIG. 3, the hoisting / lowering OFF switch 38 is replaced with the hoisting OFF switch 38a as in the detecting device for the outer tank 15. And the lowering OFF switch 38b can be separated and arranged at different heights (sixth height, eighth height). In this case, when the middle tank 14 is lowered, the switch kicker 39 provided in the middle tank 14 is, for example, a lowering ON switch 37 (fourth height), a lowering OFF switch 38b (eighth height), The OFF switch 38a (sixth height) and the winding ON switch 36 (third height) are contacted in this order. However, the vertical relationship between the lowering OFF switch 38b (eighth height) and the lowering OFF switch 38a (sixth height) is not limited to the example of FIG. 3, and for example, the lowering OFF switch 38b (eighth height). Alternatively, the winding OFF switch 38a (sixth height) may be disposed at a higher position.

  In the above, the specific example of the detection apparatus which detects the height position of the middle tank 14 was demonstrated. The control panel 32 controls the operation of the winch 30 based on the height position of the middle tank 14 detected by the detection device. For example, when the middle tank 14 descends in response to the outflow of gas from the holder, the control panel 32 detects that the middle tank 14 is lowered to a predetermined third height or less by the detection device, and thereby the winch 30 It controls to wind up the wire 31 and wind up the intermediate tank 14. Such winding operation can prevent the middle tank 14 from bottoming. Further, the wound-up middle tank 14 rises to a predetermined sixth height corresponding to the winding / lowering OFF switch 38 (however, in the example of FIG. 3, the sixth height corresponding to the winding OFF switch 38a). When it is detected, the control panel 32 stops the winding of the wire 31 by the winch 30 and stops the winding operation of the intermediate tank 14. Thereby, it can prevent winding up the intermediate tank 14 more than necessary.

  On the other hand, when the middle tank 14 rises in response to the inflow of gas into the holder, the control panel 32 detects that the middle tank 14 has risen to a predetermined fourth height or higher by the detection device, and then winches 30. Then, the wire 31 is sent out and the middle tank 14 is controlled to be lowered. By such a lowering operation, the inner tank 13 rises and can take a relatively high position with respect to the middle tank 14, and the gas storage space in the holder can be increased. Further, the lowered middle tank 14 has a predetermined sixth height corresponding to the winding / lowering OFF switch 38 (however, in the example of FIG. 3, the seventh height corresponding to the lowering OFF switch 38b). When the control panel 32 detects the lowering of the intermediate tank 14, the control panel 32 stops the feeding of the wire 31 by the winch 30 and stops the lowering operation of the intermediate tank 14. Thereby, it can prevent hunting with the winding ON switch 56 so that the middle tank 14 may not be unwound more than necessary.

  In addition, the winch 30 includes, for example, a second slack detection sensor (not shown) that detects slack of the wire 31, and the wire 31 is slack (that is, no tension is generated in the wire 31). ). As described above, when the middle tank 14 is suspended from the inner tank 13 by the wire 31, the weight of the middle tank 14 is applied to the wire 31, so that the tension is generated in the wire 31 and no slack is generated. . On the other hand, when the middle tank 14 is not suspended from the inner tank 13 by the wire 31 (for example, the middle tank 14 and the inner tank 13 are engaged with each other by the seal cup mechanism including the dip and the cup, When the wire 14 is suspended from the inner tub 13), the wire 31 is loosened because no tension is generated in the wire 31. The second slack detection sensor provided in the winch 30 detects the slack of the wire 31 and transmits it to the control panel 32 via the power and control cable 34.

  The control panel 32 does not perform the lowering operation of the intermediate tank 14 by the winch 30 while the slack of the wire 31 is detected by the second slack detection sensor (that is, no tension of the wire 31 is detected). Control (continue stopping of the lowering operation). Further, when the slack of the wire 31 is detected by the second slack detection sensor during the lowering operation of the middle tank 14 by the winch 30 (while the wire 31 is being fed), the control panel 32 sends out the wire 31. Control to stop and stop the lowering operation. In this way, the slack of the wire 31 is detected during the lowering operation when the inner tank 13 is raised and the cup 13b of the inner tank 13 and the dip 14a of the middle tank 14 are engaged. In this case, since the middle tank 14 is suspended from the inner tank 13 by the seal cup mechanism, the middle tank 14 does not descend without being suspended by the wire 31. Therefore, in such a case, the control panel 32 controls to stop the wire 31 feeding operation.

(3. Gas pressure adjustment method)
In the above, the structure of the water-containing gas holder 10 concerning this embodiment and the suspension mechanism which it comprises was demonstrated. Next, the operation of the water-containing gas holder 10 will be described. The water-containing gas holder 10 according to the present embodiment performs a gas pressure adjusting method for keeping the gas pressure in the holder constant by performing an ascending / descending operation of the gas tanks 13 to 15 described below.

(3.1 Descent operation of gas tank)
First, with reference to FIGS. 4-9, the operation | movement which the gas tanks 13-15 descend | fall in the water-containing gas holder 10 concerning this embodiment is demonstrated. 4-8 is a schematic diagram showing each stage of the lowering operation of the gas tanks 13-15 in the water-containing gas holder 10 according to the present embodiment. FIG. 9 is a timing chart showing the operation of each device when the outer tank 15 or the middle tank 14 is lowered in the water-containing gas holder 10 according to the present embodiment.

  Here, it is assumed that the initial state of the water-containing gas holder 10 is a state in which all the gas tanks 13 to 15 are fully raised (a state where the gas storage amount is maximum) as shown in FIG. The case where the gas in a holder is discharged | emitted from a state and each gas tank 13-15 descend | falls is demonstrated.

  First, in the initial state shown in FIG. 1, when the gas in the holder is caused to flow out of the gas pipe 17 and the gas storage amount in the holder is gradually reduced, as shown in FIG. 15 descends at the same time, that is, the inner tank 13, the middle tank 14, and the outer tank 15 all descend. While the gas tanks 13 to 15 are descending, the holder ceiling and the top of the inner tank 13 are separated from each other, so that the power and the control cable 54 wound around the winder 53 are gradually unwound and sent out. At the same time, the power and control cable 34 wound around the winder 33 are gradually unwound and sent out.

  Next, as the gas tanks 13 to 15 are lowered, the switch kicker 59 attached to the guide arm 24 of the outer tank 15 first comes into contact with the lowering ON switch 57 at the highest position (t1 in FIG. 9). . However, the outer tub 15 is suspended from the inner tub 13 via the middle tub 14 instead of the wire 51 during the lowering. For this reason, no tension is generated in the wire 51, and the state where the slackness of the wire 51 is detected by the slack detection sensor built in the winch 50 (wire slackness detection ON). Therefore, in this wire slack detection state, even if the switch kicker 59 comes into contact with the lowering ON switch 57 as described above, the control panel 52 does not perform the lowering operation of the outer tub 15 by the winch 50.

  Next, when the gas tanks 13 to 15 are further lowered and the outer tank 15 is lowered to a predetermined seventh height, the switch kicker 59 of the outer tank 15 comes into contact with the lowering OFF switch 58b (t2 in FIG. 9), and thereafter When the outer tub 15 is lowered to a predetermined fifth height, the switch kicker 59 comes into contact with the winding OFF switch 58a (t3 in FIG. 9). As a result, the lowering OFF switch 58b and the lowering OFF switch 58a are operated, but the control panel 52 does not perform the lowering operation or the uppering operation of the outer tub 15 by the winch 50, and the winch 50 maintains the stopped state. In the configuration example of FIG. 1, only one winding / lowering OFF switch 58 in which the winding OFF switch 58 b and the winding OFF switch 58 a are integrated is provided. In this case, the switch kicker 59 is similarly provided. Even when the winding / lowering OFF switch 58 is touched, the stopped state of the winding / lowering operation is maintained.

  Thereafter, when the gas tanks 13 to 15 are further lowered and the outer tank 15 is lowered to a predetermined first height (for example, a height at which the distance between the lower end of the outer tank 15 and the bottom 11 of the water tank 12 is 200 mm). As shown in FIG. 5, the switch kicker 59 of the outer tub 15 comes into contact with the winding ON switch 56, and the winding ON switch 56 is turned ON (t4 in FIG. 9). Then, the control panel 52 controls the winch 50 to start winding the wire 51 and start the winding operation of the outer tub 15. At this time, the winding speed of the winch 50 is adjusted so that “the winding speed of the outer tank 15 by the winch 50”> “the lowering speed of the outer tank 15 accompanying gas outflow”. For this reason, the descending outer tank 15 is wound up by the winch 50 and rises, and does not reach the bottom 11 of the water tank 12.

  In this way, the wire 51 is wound up by the winch 50 and the outer tub 15 is wound up, whereby the outer tub 15 is suspended from the inner tub 13 by the wire 51 and the outer tub 15 is wound so as not to bottom. Can be raised. Further, due to the winding operation, the wire 51 is tensioned and tension is generated after a predetermined time from the start of the winding operation, so that the slackness detection by the slack detection sensor of the wire 51 is turned off (t5 in FIG. 9).

  As described above, when the outer tub 15 is wound up by the winch 50, the outer tub 15 rises although the inner tub 13 and the middle tub 14 are lowered as the gas flows out. As a result, when the rolled up outer tub 15 rises to a predetermined fifth height (for example, a height at which the distance between the lower end of the outer tub 15 and the bottom 11 of the water tub 12 is 500 mm), the switch kicker of the outer tub 15 59 contacts the winding OFF switch 58a (t6 in FIG. 9). Then, the control panel 52 stops the winding of the wire 51 by the winch 50 and stops the winding operation of the outer tub 15.

  Next, when the winding operation of the outer tub 15 is stopped, the inner tub 13, the middle tub 14, and the outer tub 15 are lowered again with the outflow of gas. When the outer tub 15 descends to the first height again, the switch kicker 59 of the outer tub 15 comes into contact with the hoist ON switch 56, and therefore the hoisting operation of the outer tub 15 is resumed (t7 in FIG. 9). As a result, when the outer tub 15 rises again from the first height to the fifth height, the switch kicker 59 of the outer tub 15 comes into contact with the hoisting OFF switch 58a, so that the hoisting operation of the outer tub 15 is stopped again (FIG. 9). T8).

  Thereafter, until the lowering of the inner tub 13 stops, the outer tub 15 is repeatedly wound up and stopped by the winch 50 and the wire 51 in the same manner as described above. It repeatedly moves up and down between the switch 58a (between the first height and the fifth height), and does not reach the bottom. Even when the outer tank 15 is repeatedly raised and lowered, both the inner tank 13 and the middle tank 14 continue to descend as the gas flows out as shown in FIG. For this reason, the power and control cable 54 wound around the winder 53 are gradually unwound and sent out, and the power and control cable 34 wound around the winder 33 are also gradually unwound and sent out.

  Next, as the inner tank 13 and the middle tank 14 descend, the switch kicker 39 mounted on the guide arm 22 of the middle tank 14 comes into contact with the lowering ON switch 37 at the highest position (t1 in FIG. 9). . However, during the lowering, the middle tank 14 is suspended from the inner tank 13 without the wire 31, so that no tension is generated in the wire 31, and the wire 31 is detected by the slack detection sensor built in the winch 30. Is a state where wire slack is detected (wire slack detection is ON). Therefore, in such a wire slack detection state, even if the switch kicker 39 comes into contact with the lowering ON switch 37 as described above, the control 32 does not perform the lowering operation of the intermediate tank 14 by the winch 30.

  Next, when the inner tank 13 and the middle tank 14 are further lowered and the middle tank 14 is lowered to a predetermined eighth height, the switch kicker 39 of the middle tank 14 comes into contact with the lowering OFF switch 38b (t2 in FIG. 9). Thereafter, when the middle tank 14 is lowered to a predetermined sixth height, the switch kicker 39 comes into contact with the winding OFF switch 38a (t3 in FIG. 9). As a result, the lowering OFF switch 38b and the lowering OFF switch 38a are operated, but the control panel 32 does not perform the lowering operation or the uppering operation of the intermediate tank 14 by the winch 30, and the winch 50 maintains the stopped state. In the configuration example of FIG. 1, only one winding / lowering OFF switch 38 in which the winding OFF switch 38 b and the winding OFF switch 38 a are integrated is provided. Similarly, in this case, the switch kicker 39 includes the switch kicker 39. Even if the winding / lowering OFF switch 38 is touched, the stopped state of the winding / lowering operation is maintained.

  Thereafter, the inner tank 13 and the middle tank 14 are further lowered, and the middle tank 14 reaches a predetermined third height (for example, a height at which the distance between the lower end of the middle tank 14 and the bottom 11 of the water tank 12 is 200 mm). When descending, as shown in FIG. 7, the switch kicker 39 of the intermediate tank 14 comes into contact with the winding ON switch 36, and the winding ON switch 36 is turned ON (t4 in FIG. 9). Then, the control panel 32 controls the winch 30 to start winding the wire 31 and start the winding operation of the intermediate tank 14. At this time, the winding speed of the winch 30 is adjusted so that “the winding speed of the middle tank 14 by the winch 30”> “the lowering speed of the middle tank 14 due to gas outflow”. For this reason, the lowering middle tank 14 is wound up by the winch 30 and rises, and does not reach the bottom 11 of the water tank 12.

  In this way, by winding the wire 31 with the winch 30 and performing the winding operation of the middle tank 14, the middle tank 14 is suspended from the inner tank 13 by the wire 31 and the middle tank 14 is wound so as not to bottom. Can be raised. Further, due to the winding operation, the wire 51 is tensioned and tension is generated after a predetermined time from the start of the winding operation, so that the slackness detection by the slack detection sensor of the wire 51 is turned off (t5 in FIG. 9).

  As described above, when the middle tank 14 is wound up by the winch 30, the middle tank 14 rises although the inner tank 13 is lowered as the gas flows out. As a result, when the rolled up middle tank 14 rises to a predetermined sixth height (for example, the height at which the distance between the lower end of the middle tank 14 and the bottom 11 of the water tank 12 is 500 mm), the switch kicker of the middle tank 14 39 comes into contact with the winding OFF switch 38a (t6 in FIG. 9). Then, the control panel 32 stops the winding of the wire 31 by the winch 30 and stops the winding operation of the intermediate tank 14.

  Next, in the state where the winding operation of the middle tank 14 is stopped, the inner tank 13 and the middle tank 14 are lowered again with the outflow of gas. Then, when the middle tank 14 is lowered again to the third height, the switch kicker 39 of the middle tank 14 comes into contact with the winding ON switch 36, so that the winding operation of the middle tank 14 is resumed (t7 in FIG. 9). As a result, when the middle tank 14 rises again from the third height to the sixth height, the switch kicker 39 of the middle tank 14 comes into contact with the winding OFF switch 38a, so that the winding operation of the middle tank 14 is stopped again (FIG. 9). T8).

  Thereafter, until the lowering of the inner tank 13 stops, the winding operation of the intermediate tank 14 by the winch 30 and the wire 31 and the stop thereof are repeated in the same manner as described above, so that the intermediate tank 14 has the winding ON switch 36 and the winding OFF. It repeatedly moves up and down between the switch 38a (between the third height and the sixth height), and does not reach the bottom. Even when the middle tank 14 is repeatedly raised and lowered, the inner tank 13 continues to descend as the gas flows out. For this reason, the power and control cable 54 wound around the winder 53 are gradually unwound and sent out, and the power and control cable 34 wound around the winder 33 are also gradually unwound and sent out.

  Thereafter, when the gas further flows out, the inner tank 13 descends and reaches the bottom 11 of the water tank 12 as shown in FIG. Even in such a state, the outer tub 15 and the middle tub 14 are suspended from the inner tub 13 by the wires 51 and 31, so that they do not reach the bottom 11.

  The descent operation of the gas tanks 13 to 15 in the water-containing gas holder 10 according to the present embodiment has been described above. According to such a descent operation, if the outer tank 15 or the middle tank 14 descends to a height position (first height or third height) at which the outer tank 15 or the middle tank 14 is likely to bottom during the descent of the gas tanks 13 to 15, the winch 50. Or 30 is operated to wind up the outer tank 15 or the middle tank 14, and as a result, the outer tank 15 or the middle tank 14 is wound up to a predetermined height position (second height or fourth height). Repeat to stop. Thereby, it can prevent that the outer tank 15 and the middle tank 14 settle, and the own weight of the outer tank 15 and the middle tank 14 can always be hung on the inner tank 13. FIG. Therefore, since all the dead weights of the inner tank 13, the middle tank 14, and the outer tank 15 can be always applied to the gas in the holder when the gas flows out, the gas pressure in the holder can be maintained almost constant.

(3.2 Gas tank ascending operation)
Next, with reference to FIGS. 10-14, the operation | movement which the gas tanks 13-15 raise in the water-containing gas holder 10 concerning this embodiment is demonstrated. FIGS. 10 to 13 are schematic diagrams showing the steps of the ascending operation of the gas tanks 13 to 15 in the water-containing gas holder 10 according to the present embodiment. FIG. 14 is a timing chart showing the operation of each device when the outer tank 15 or the middle tank 14 is raised in the water-containing gas holder 10 according to the present embodiment.

  Here, it is assumed that the initial state of the water-containing gas holder 10 is a state in which all the gas tanks 13 to 15 are fully lowered (a state in which the gas storage amount is minimum) as shown in FIG. A case will be described in which gas is allowed to flow into the holder from the state and the respective gas tanks 13 to 15 are sequentially raised in the order of the inner tank 13, the intermediate tank 14, and the outer tank 15.

  First, in the initial state shown in FIG. 8, when gas is introduced into the holder from the gas pipe 17 and the amount of gas stored in the holder is gradually increased, as shown in FIG. 15 rises simultaneously, that is, the inner tank 13, the middle tank 14, and the outer tank rise together. At this time, since the middle tank 14 and the outer tank 15 are suspended from the inner tank 13 by the wires 31, 51, the three gas tanks 13 to 15 rise together. Further, while the gas tanks 13 to 15 are raised, the distance between the holder ceiling and the top of the inner tank 13 is reduced, so that the power and control cable 54 is gradually wound around the winder 53 and the power and control are controlled. The cable 34 is gradually wound around the winder 33.

  Next, as the gas tanks 13 to 15 are raised, the switch kicker 39 attached to the guide arm 22 of the middle tank 14 sequentially contacts the winding OFF switch 38a and the lowering OFF switch 38b (t11 in FIG. 14). , T12), the switch kicker 59 attached to the guide arm 24 of the outer tub 15 sequentially contacts the winding OFF switch 58a and the lowering OFF switch 58b (t11, t12 in FIG. 14). As a result, the hoisting OFF switches 38a and 58a and the lowering OFF switches 38b and 58b are operated. However, the control panels 32 and 52 perform both the hoisting operation and the lowering operation of the inner tank 14 and the outer tank 15 by the winches 30 and 50. The winches 30 and 50 maintain the stopped state.

  After that, when both the gas tanks 13 to 15 are further raised from the state of FIG. 10 and the outer tank 15 is raised to the second height, the switch kicker 59 of the outer tank 15 is brought into contact with the lowering ON switch 57 and wound. The lowering ON switch 57 is turned on (t13 in FIG. 14). At this time, since the outer tub 15 is suspended from the inner tub 13 by the wire 51, the wire 51 is not slackened, and the slack detection sensor incorporated in the winch 50 does not detect the slack of the wire 51 (wire slack detection). OFF). Therefore, in response to the contact between the switch kicker 59 and the lowering ON switch 57, the control panel 52 controls the start of the lowering operation of the outer tub 15 by starting the feeding of the wire 51 by the winch 50. At this time, the feeding speed of the wire 51 by the winch 50 is adjusted so that “the lowering speed of the outer tank 15 by the winch 50”> “the rising speed of the outer tank 15 accompanying the gas inflow”. For this reason, the outer tank 15 that has risen together with the inner tank 13 is lowered by the winch 50 and lowered.

  Similarly, when the middle tank 14 rises to the fourth height at the same time as or after the start of lowering of the outer tank 15, the switch kicker 39 of the middle tank 14 contacts the lowering ON switch 37 (FIG. 14). T13). At this time, since the middle tank 14 is suspended from the inner tank 13 by the wire 31, the wire 31 is not slackened, and the slack detection sensor built in the winch 30 does not detect the slack of the wire 31 (wire slack detection). OFF). Therefore, in response to the contact between the switch kicker 39 and the lowering ON switch 37, the control panel 32 controls the winch 30 to start feeding the wire 31 and starts the lowering operation of the intermediate tank 14. At this time, the feeding speed of the wire 31 by the winch 30 is adjusted so that “the lowering speed of the middle tank 14 by the winch 50”> “the rising speed of the middle tank 14 accompanying the gas inflow”. For this reason, the rising middle tank 14 is lowered by the winch 30 and descends as the gas flows in.

  As described above, when the outer tank 15 and the middle tank 14 are lowered by the winches 50 and 30, the outer tank 15 and the middle tank 14 are lowered even though the inner tank 13 is raised as the gas flows out. As a result, when the wound outer tub 15 is provided with a predetermined seventh height (only the winding / lowering ON switch 58 in which the winding ON switch 58a and the lowering ON switch 58b are integrated), the height Is lowered to the fifth height), the switch kicker 59 of the outer tub 15 comes into contact with the lowering OFF switch 58b (t14 in FIG. 14). Then, the control panel 52 stops sending the wire 51 from the winch 50 and stops the lowering operation of the outer tub 15.

  Similarly, when the lowered middle tank 14 has a predetermined eighth height (when only the hoisting / lowering ON switch 38, in which the hoisting ON switch 38a and the hoisting ON switch 38b are integrated, is installed) When it is lowered to the sixth height, the switch kicker 39 of the middle tank 14 comes into contact with the lowering OFF switch 38b (t14 in FIG. 14). Then, the control panel 32 stops sending the wire 31 from the winch 30 and stops the lowering operation of the intermediate tank 14.

  Next, in the state where the lowering operation of the outer tub 15 and the middle tub 14 is stopped as described above, the outer tub 15 and the middle tub 14 rise together with the inner tub 13 with the inflow of gas. Then, when the outer tub 15 rises again to the second height, the switch kicker 59 of the outer tub 15 comes into contact with the lowering ON switch 57, so that the lowering operation of the outer tub 15 is resumed (t15 in FIG. 14). Similarly, when the middle tank 14 rises again to the fourth height, the switch kicker 39 of the middle tank 14 comes into contact with the lowering ON switch 37, so that the lowering operation of the middle tank 14 is resumed (t15 in FIG. 14).

  Further, as a result of the lowering operation, when the outer tub 15 is lowered again from the second height to the seventh height, the switch kicker 59 of the outer tub 15 comes into contact with the lowering OFF switch 58b. The operation is stopped again (t16 in FIG. 14). Similarly, when the middle tank 14 is lowered again from the fourth height to the eighth height, the switch kicker 39 of the middle tank 14 comes into contact with the lowering OFF switch 38b, so that the lowering operation of the middle tank 14 is stopped again ( T16 in FIG.

  Thereafter, until the middle tank 14 is engaged with the inner tank 13 by the seal cup mechanism, the lowering operation of the outer tank 15 by the winch 50 and the wire 51 and its stop, and the middle by the winch 30 and the wire 31 are performed. The lowering operation and stopping of the tank 14 are repeated. As a result, the outer tank 15 is repeatedly raised and lowered between the winding ON switch 56 and the winding OFF switch 58b (between the second height and the seventh height), while the middle tank 14 is raised with the winding ON switch 36. Since it repeatedly ascends and descends between the OFF switch 38b (between the fourth height and the eighth height), both do not bottom. Even when the outer tank 15 and the middle tank 14 are repeatedly raised and lowered, the inner tank 13 continues to rise as the gas flows. For this reason, the power and control cable 54 is gradually wound around the winder 53 and the power and control cable 34 is gradually wound around the winder 33.

  As described above, while the inner tub 13 is being lifted, the wire 51 is sent out by the winch 50 to perform the lowering operation of the outer tub 15 as needed, and the wire 31 is sent out by the winch 30 to perform the lowering operation of the middle tub 14 as needed. Do. Thereby, since the inner tank 13 can rise relatively with respect to the middle tank 14 and the outer tank 15 (see FIG. 11), the outer tank 15 and the middle tank 14 are suspended from the inner tank 13 by the wires 51 and 31. While being lowered, the inner tank 13 can be raised according to the gas inflow into the holder.

  Thereafter, when gas further flows into the holder, the inner tank 13 rises while repeating the above-described lowering operation and stopping of the intermediate tank 14 and the outer tank 15. Then, during the lowering operation of the middle tank 14 and the outer tank 15 (t17 to t18 in FIG. 14), before the descending switch kicker 39 contacts the lowering OFF switch 38b, the relative relationship between the inner tank 13 and the middle tank 14 is increased. When the height exceeds a predetermined value, as shown in FIG. 11, the cup 13b at the lower end of the inner tub 13 and the dip 14a at the upper end of the middle tub 14 are engaged, and the inner tub 13 and the middle tub 14 are sealed cups. Connect by mechanism. Then, the intermediate tank 14 is suspended from the inner tank 13 by the seal cup mechanism, and the wire 31 sent out from the winch 30 is loosened without applying tension. 31 is detected (t18 in FIG. 14).

  When the slack of the wire 31 is detected, the control panel 32 controls the winch 30 to stop the feeding of the wire 31 and stop the lowering operation of the intermediate tank 14. Thereafter, even if the middle tank 14 rises together with the inner tank 13 and the switch kicker 39 of the middle tank 14 comes into contact with the lowering ON switch 37, the slack detection of the wire 31 is activated (sagging detection ON). The winch 30 does not perform the lowering operation of the middle tank 14. By canceling the lowering operation of the middle tank 14 based on such slack detection, the unnecessary wire 31 is sent out after the middle tank 14 is suspended from the inner tank 13 by the original seal cup mechanism. You can avoid it.

  On the other hand, for the outer tub 15, even after the operation of lowering the middle tub 14 as described above is stopped, the winch is similar to the above until the outer tub 15 is engaged with the middle tub 14 by the seal cup mechanism. The lowering operation of the outer tub 15 by the 50 and the wire 51 and the stop thereof are repeated.

  Next, when further gas flows into the holder, as shown in FIG. 12, the inner tank 13 and the middle tank 14 rise together while repeating the above-described lowering operation and stopping of the outer tank 15. During the lowering operation of the outer tub 15 (t17 to t18 in FIG. 14), the relative height between the inner tub 14 and the outer tub 15 is predetermined before the switch kicker 59 that descends contacts the lowering OFF switch 58b. When the value exceeds the value, as shown in FIG. 13, the cup 14b at the lower end of the middle tank 14 engages with the dip 15a at the upper end of the outer tank 15, and the middle tank 14 and the outer tank 15 are connected by the seal cup mechanism. To do. Then, the outer tub 15 is suspended from the inner tub 13 via the middle tub 14 by the seal cup mechanism, and the wire 51 fed from the winch 50 is slackened without acting on the tension. The slack of the wire 51 is detected by the detection sensor (t18 in FIG. 14).

  When the slack of the wire 51 is detected, the control panel 52 controls the winch 50 to stop the feeding of the wire 51 and stop the lowering operation of the outer tub 15. After that, even if the outer tank 15 rises together with the inner tank 13 and the middle tank 14 and the switch kicker 59 of the outer tank 15 comes into contact with the lowering ON switch 57, the looseness detection of the wire 51 is activated ( The slack detection is ON) and the winch 50 does not perform the lowering operation of the outer tub 15. By canceling the lowering operation of the outer tub 15 based on such slack detection, it is unnecessary after the outer tub 15 is suspended from the inner tub 13 via the middle tub 14 by the original seal cup mechanism. The wire 51 can be prevented from being sent out.

  As shown in FIG. 13, after the intermediate tank 14 is suspended from the inner tank 13 by the seal cup mechanism and the outer tank 15 is suspended from the intermediate tank 14 by the seal cup mechanism, as shown in FIG. In accordance with the inflow of gas, the inner tank 13, the middle tank 14, and the outer tank 15 all rise. As a result, when these gas tanks 13 to 15 are raised to the maximum, the state shown in FIG. 1 is reached, and the amount of gas stored in the holder is maximized.

  11 to 12 and 13, also in the operation from FIG. 1, the power and control cable 54 is gradually wound around the winder 53 as the inner tank 13 is raised, and the power and control are controlled. The cable 34 is gradually wound around the winder 33.

  As above, the ascending operation of the gas tanks 13 to 15 in the water-containing gas holder 10 according to the present embodiment has been described. According to the ascending operation, the winch 50 and / or 30 is operated as necessary when the inner tank 13, the middle tank 14, and the outer tank 15 are raised in order in accordance with the inflow of gas into the holder. The tank 15 and / or the middle tank 14 are lowered, and the wires 51 and / or 31 are sent out. For this reason, the inner tank 13 can rise relative to the middle tank 14 and the outer tank 15, and the inner tank 13 and middle tank 14 can rise relative to the outer tank 15. Therefore, the gas tanks 13 to 15 can be raised by a necessary amount according to the gas inflow amount.

  Furthermore, when the outer tank 15 and the middle tank 14 are not engaged with the inner tank 13 by the original seal cup mechanism, the outer tank 15 and the middle tank 14 can be suspended from the inner tank 13 by the wires 51 and 31. Thereby, it can prevent that the outer tank 15 and the middle tank 14 settle, and the own weight of the outer tank 15 and the middle tank 14 can always be hung on the inner tank 13. FIG. Therefore, since all the dead weights of the inner tank 13, the middle tank 14, and the outer tank 15 can be always applied to the gas in the holder at the time of gas inflow, the gas pressure in the holder can be maintained almost constant.

(4. Switch position)
Next, with reference to FIG. 15, the positional relationship of each switch for performing the winding / lowering operation in the water-containing gas holder 10 according to the present embodiment will be described. FIG. 15 is a partial enlarged cross-sectional view showing the outer tub 15 of the water-containing gas holder 10 according to the present embodiment and its peripheral portion.

In FIG. 15, the switch kicker 59 attached to the guide arm 24 of the outer tub 15 is
(A) Height position of the outer tub 15 when contacting the lowering ON switch 57 (hereinafter referred to as “lowering ON switch position”)
(B) Height position of the outer tub 15 when contacting the lowering OFF switch 58b (hereinafter referred to as “lowering OFF switch position”)
(C) Height position of the outer tub 15 when contacting the winding ON switch 56 (hereinafter referred to as “winding ON switch position”)
(D) Height position of the outer tub 15 when contacting the winding OFF switch 58a (hereinafter referred to as “winding OFF switch position”)
Is shown.

  As shown in FIG. 3, in the present embodiment, as a detection device for detecting the height position of the outer tub 15, a lowering ON switch 57 and a lowering OFF switch are arranged in order from the higher installation position. 58b, a winding OFF switch 58a, and a winding ON switch 56 are provided. Accordingly, the switch positions are, in order from the highest, the lowering ON switch position in FIG. 15A, the lowering OFF switch position in FIG. 15B, the winding OFF switch position in FIG. c) Winding ON switch position. When the lowering OFF switch 58b and the lowering OFF switch 58a are integrally formed, the lowering OFF switch position in FIG. 15 (b) is equal to the lowering OFF switch position in FIG. 15 (d).

  First, the lowering ON switch position in FIG. As shown in FIG. 15 (a), the lowering ON switch position is a height at which the water in the water tank 12 overflows beyond the seal cup mechanism of the outer tank 15 and the middle tank 14, and “outer tank 15 The gap HH between the lower end 15c and the bottom 11 is set to a height position that is at least the dimension (for example, 800 mm) at which the level switch can be installed.

  In order to “the water in the water tank 12 overflows beyond the seal cup mechanism of the outer tank 15 and the middle tank 14” at the lowering ON switch position, the water surface 71 of the water tank 12 outside the holder What is necessary is just to be higher than the upper surface of the dip 15a. The reason for providing this overflow condition is that if the water in the water tank 12 does not overflow beyond the seal cup mechanism, the amount of water in the seal cup will be insufficient and the seal will run out. This is because the gas 72 (gas accumulated in the dip 15a of the outer tank 15) is released to the atmosphere. If the water in the water tank 12 overflows beyond the seal cup mechanism, even if the middle tank 14 descends with respect to the outer tank 15 as shown in FIG. Since the gas 72 in the dip 15a is sealed with water, it is not released into the atmosphere.

  In addition, the “dimension for level switch installation” means that both the above-described ON / OFF of the lowering operation of the outer tub 15 and the ON / OFF of the hoisting operation are performed below the lowering ON switch position. It is a dimension which can ensure a space required in order to do, for example, is 800 mm.

  Next, the lowering OFF switch position in FIG. 15B will be described. The lowering OFF switch position is set lower than the lowering ON switch position by at least the minimum lowering dimension (for example, about 300 mm). Accordingly, the gap H between the lower end 15c of the outer tub 15 and the bottom 11 when in the lowering OFF switch position is, for example, 500 mm (H = HH−300 mm = 500 mm) or more.

  When the outer tub 15 rises to the lowering ON switch position (second height) in FIG. 15A, the wire 51 is sent out from the winch 50 and the outer tub 15 is lowered. On the other hand, when the outer tank 15 is lowered to the lowering OFF switch position (seventh height) in FIG. 15B, the lowering operation of the outer tank 15 is stopped. Until the inner tank 13 continues to rise and the slack of the wire 51 is detected, the lowering operation and the stopping operation of the outer tank 15 are repeated.

  Next, the winding ON switch position in FIG. 15C will be described. If the lowering OFF switch position and the winding ON switch position are too close, a hoisting operation (hunting) immediately after the outer tank 15 is lowered occurs. In order to prevent such hunting, the hoisting ON switch position is determined from the dimension considering the winch braking distance after the lowering OFF switch is actuated and the distance that the inner layer 13 descends at that time from the lowering OFF switch position. The lower end 15c of the outer tub 15 is set at a height position where the lower end 15c of the outer tub 15 is not in contact with the bottom 11 of the water tub 12. Further, from the viewpoint of preventing the bottom of the outer tank 15 from bottoming, for example, the distance by which the outer layer 15 descends from the position of the winding ON switch to the start of the winch activation and the inclination of the holder (for example, 1/500) In consideration of the above, it is necessary to provide a minimum gap LL between the lower end 15 c and the bottom 11 of the outer tub 15. Accordingly, the gap LL between the lower end 15c of the outer tub 15 and the bottom 11 when in the winding ON switch position is, for example, 200 mm or more.

  Next, the winding OFF switch position in FIG. The winding OFF switch position is set higher than the above-described winding ON switch position by a minimum winding dimension (for example, about 300 mm) or more. Moreover, if the winding OFF switch position and the lowering ON switch position are too close, a lowering operation (hunting) immediately after the outer tank 15 is wound occurs. In order to prevent such hunting, the hoisting OFF switch position is lower than the dimension considering the winch braking distance after the hoisting OFF switch is actuated and the distance that the inner layer 13 is raised at that time. It is necessary to set the height position (for example, about 300 mm). Accordingly, the gap L between the lower end 15c of the outer tub 15 and the bottom 11 when the winding OFF switch is in the position is, for example, 500 mm (L is a larger value of “LL + 300 mm = 500 mm” or “HH−300 mm = 500 mm”). That's it.

  When the outer tub 15 is lowered to the winding ON switch position (first height) in FIG. 15C, the wire 51 is wound by the winch 50 and the outer tub 15 is wound. On the other hand, when the outer tub 15 rises to the hoisting OFF switch position (fifth height) in FIG. 15D, the hoisting operation of the outer tub 15 is stopped. Until the lowering of the inner tank 13 stops, the winding operation and the stopping operation of the outer tank 15 are repeated.

  Above, with reference to FIG. 15, the lowering ON switch position (second height), the lowering OFF switch position (seventh height), and the winding OFF switch position (fifth height) of the outer tub 15 according to the present embodiment. The setting example of the height) and the winding ON switch position (first height) has been described. Although not shown, the lowering ON switch position (fourth height), the lowering OFF switch position (eighth height), the winding OFF switch position (sixth height), and the winding ON switch position of the middle tank 14 Since (third height) can also be set in the same manner as each switch position of the outer tub 15, the detailed description thereof is omitted. Note that the lowering OFF switch position and the winding OFF switch position of the outer tub 15 can be the same position (seventh height = fifth height). Further, the lowering OFF switch position and the winding OFF switch position of the middle tank 14 can be set to the same position (eighth height = sixth height).

(5. Effect)
Heretofore, the water-containing gas holder 10 according to the present embodiment and the gas pressure adjusting method using the same have been described. According to the present embodiment, the outer tank 15 can be suspended from the inner tank 13 by using the wire 51 by the first suspension mechanism, and the middle tank 14 by using the wire 31 by the second suspension mechanism. It can be suspended in the inner tank 13. Accordingly, the outer tank 15 or the middle tank 14 can be suspended from the inner tank 13 before the descending outer tank 15 or the middle tank 14 reaches the bottom 11. For this reason, it is possible to prevent the outer tank 15 and the middle tank 14 from bottoming, and the own weight of the outer tank 15 and the middle tank 14 can be always applied to the inner tank 13. Therefore, when the gas flows out, all the dead weights of the inner tank 13, the middle tank 14, and the outer tank 15 can be constantly applied to the gas in the holder, so that the gas pressure in the holder can be maintained almost constant. For this reason, since the gas pressure in the water-containing gas holder 10 hardly fluctuates, it is possible to prevent the gas generation point connected to the water-containing gas holder 10 from being adversely affected.

  Moreover, the gas pressure adjusting mechanism according to the present embodiment is configured to adjust the mass of the entire gas tank by suspending the outer tank 15 and the middle tank 14 from the inner tank 13 by the wires 51 and 31. Therefore, since the mass of the inner tank is not increased / decreased by using a heavy object different from the gas holder main body as in the conventional gas pressure adjusting device, the weight increase / decrease time is not required. For example, since the water storage time for the pressure adjusting water tank is not required as described in Patent Document 1, when the gas tank is repeatedly raised and lowered in the vicinity where the number of stages of the gas tank changes (near the drainage level of the pressure adjusting water tank) Gas pressure fluctuations are not repeated. Therefore, according to the present embodiment, the holder in the entire use range of the water-containing gas holder 10 (when each of the gas tanks 13 to 15 is in an arbitrary position), including when the number of stages of the gas tanks 13 to 15 changes. The gas pressure inside can be maintained almost constant.

  Furthermore, in this embodiment, since it is the structure which installs the suspension mechanism which consists of the wires 51 and 31, the winches 50 and 30 etc. outside the gas tanks 13-15, when providing a certain gas pressure adjustment mechanism inside a gas tank Compared with the above, there is no dead space in the gas tanks 13 to 15, and the effective space (gas storage space) when the inner tank 13 is elevated by one tank is not reduced. In addition, when installing the suspension mechanism, it is not necessary to pass a separate member through the gas tanks 13 to 15, so that the risk of gas leakage is not increased. In addition, since it is only necessary to drive the winches 50 and 30 only during the winding / lowering operation of the outer tank 15 or the middle tank 14, energy efficiency is better than in the case of continuously driving the water absorption pump as in the prior art. .

  The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

  For example, in the said embodiment, although the example of the 3 tank type water-containing gas holder 10 provided with the inner tank 13, the intermediate tank 14, and the outer tank 15 was demonstrated as a gas tank which can be moved up and down, this invention is such an example. It is not limited to. If the water-containing gas holder of the present invention is a double-tank water-containing gas holder, for example, it may be a two-tank water-containing gas holder having only an inner tank and an outer tank, or 1 It may be a four-tank or more water-containing gas holder provided with one inner tank, a plurality of middle tanks, and one outer tank. In the case of a two-tank water-containing gas holder, only the first suspension mechanism provided with the wire 51, the winch 50, etc. for suspending the outer tank described above is provided, and the second suspension for suspending the middle tank No mechanism is required. Further, in the case of a water tank type gas holder of four tanks or more, a plurality of first suspension mechanisms each including a first suspension mechanism for one outer tank, a wire 31 and a winch 30 for hanging a plurality of middle tanks, etc. Two suspension mechanisms may be installed.

  Moreover, although the wires 51 and 31 concerning the said embodiment are preferably comprised with a metal wire etc. when an intensity | strength surface is considered, this invention is not limited to this example. As long as the wire of this invention has the intensity | strength which can suspend the inner tank 13 or the intermediate tank 14, it may contain linear members, such as a rope, a string, and a chain, for example.

It is a schematic diagram which shows schematic structure of the water-containing gas holder which concerns on the 1st Embodiment of this invention. It is a top view which shows typically the upper part structure of the inner tank of the water-containing gas holder concerning the embodiment. It is explanatory drawing which shows the height positional relationship of each switch concerning the embodiment. It is a schematic diagram which shows each step | level of the descent | fall operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the descent | fall operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the descent | fall operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the descent | fall operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the descent | fall operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a timing chart which shows operation | movement of each apparatus at the time of descent | fall of the outer tank or the middle tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the raising operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the raising operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the raising operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a schematic diagram which shows each step | level of the raising operation | movement of the gas tank in the water-containing gas holder concerning the embodiment. It is a timing chart which shows operation | movement of each apparatus at the time of the raising of the outer tank or the middle tank in the water-containing gas holder concerning the embodiment. It is a partial expanded sectional view which shows the outer tank and its peripheral part in each switch position concerning the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Water-containing gas holder 11 Bottom part 12 Water tank 13 Inner tank 14 Middle tank 15 Outer tank 16 Base pillar 17 Gas piping 20, 22, 24 Guide arm 21, 23, 25 Guide roller 26 Outer tank stopper 27 Lower guide roller 30, 50 Winch 31, 51 Wire 32, 52 Control panel 33, 53 Winder 34, 54 Power and control cable 35a, 35b, 35c, 55a, 55b, 55c Pulley for power and control cable 36, 56 Winding ON switch 37, 57 winding Lowering ON switch 38, 58 Winding / lowering OFF switch 38a, 58a Winding OFF switch 38b, 58b Lowering OFF switch 39, 59 Switch kicker 40, 60 Winding ON switch signal cable 41, 61 Lowering ON switch signal cable 42, 62 Winding / Lower OFF switch signal cable 71 Water 72 Gas

Claims (4)

In a hydrated gas holder comprising an outer tub and an inner tub arranged so as to freely move up and down according to the flow of gas in and out,
As the outer tub does not bottom landing, Bei give a suspension mechanism for suspending the outer tub in the tank,
The suspension mechanism is
A linear member for suspending the outer tub on the inner tub;
A winch installed in the inner tub and capable of winding or delivering the linear member;
When it is detected that the outer tub has been lowered to a predetermined first height or less, the linear member is wound by the winch, and when it is detected that the outer tub has been raised to a predetermined second height or more, A control device for controlling the linear member to be sent out from the winch;
A water-containing gas holder, comprising: The suspension mechanism is
A slack detection sensor for detecting slack of the linear member ;
Wherein the controller, when the slack of the wire member by the slack detection sensor during delivery of the linear member is detected, and controls so as to stop the delivery of the linear member, wherein Item 2. The water-containing gas holder according to Item 1 . In the hydrated gas holder provided with the outer tank, the middle tank and the inner tank, which are arranged to freely move up and down according to the inflow and outflow of gas,
A first suspension mechanism that suspends the outer tub from the inner tub so that the outer tub does not bottom,
A second suspension mechanism for suspending the middle tank to the inner tank so that the middle tank does not bottom,
Bei to give a,
The first suspension mechanism is
A first linear member for suspending the outer tank from the inner tank;
A first winch installed in the inner tub and capable of winding or delivering the first linear member;
When it is detected that the outer tank is lowered to a predetermined first height or less, the first linear member is wound up by the first winch, and the outer tank is raised to a predetermined second height or more. A first control device that, when detected, controls to send out the first linear member from the first winch;
With
The second suspension mechanism is
A second linear member for suspending the middle tank from the inner tank;
A second winch installed in the inner tub and capable of winding or delivering the second linear member;
When it is detected that the middle tank is lowered to a predetermined third height or less, the second linear member is wound up by the second winch, and the middle tank is raised to a predetermined fourth height or more. A second control device that, when detected, controls to send out the second linear member from the second winch;
A water-containing gas holder, comprising: The first suspension mechanism is
A first slack detection sensor for detecting slack of the first linear member ;
The first control apparatus, when the slack of the said by said first slack detection sensor during the feeding of the first linear member first linear member is detected, stops the feeding of the first linear member Control and
The second suspension mechanism is
A second slack detection sensor for detecting slack of the second linear member ;
It said second control device, when the slack of the said by the second slack detection sensor during delivery of the second linear member second linear member is detected, stops the feeding of the second linear member The water-containing gas holder according to claim 3 , which is controlled as follows.

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