JPH1151834A - Apparatus for measuring pressure withstanding expansion of gas container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach and detach a nozzle to a pipe opening of a gas container by a one touch operation, and transfer the gas container efficiently automatically, by engaging a locking ball to a lower opening edge of the pipe opening and holding and suspending the gas container at the side of a lower face of a lid body. SOLUTION: A lower end part of a nozzle body 11 having a biasing shaft 15 raised is inserted to a container pipe opening 101. Then the biasing shaft 15 is lowered to project a locking ball 13 from a fit hole 12 to be engaged with a lower opening edge 103 of the pipe opening 101. Accordingly the nozzle body 11 is prevented from slipping off. The nozzle body 11 is integrally mounted to a gas container 100 and the gas container 100 is held and suspended via the nozzle body 11 at the side of a lower face of a lid body 6. The gas container 100 is moved to a measurement position by moving the lid body 6 parallel, up and down at a suitable time, soaked and suspended in a water jacket by lowering the lid body 6. A high pressure water is pressed into the gas container 100. A pressure withstanding expansion is measured in this manner. After the measurement, the gas container 100 is transferred by moving the lid body 6 up, parallel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-resistant expansion measuring apparatus for a high-pressure gas container for filling a high-pressure gas such as LP gas.

[0002]

2. Description of the Related Art Conventionally, as a measuring device for a high-pressure gas container of this type, there has been known a device for pressure-resistant expansion measurement by feeding high-pressure water into a gas container suspended in a water jacket in a suspended manner.
For example, Japanese Utility Model Publication No. 58-52509 discloses that, at the lower end of a high-pressure water pressurizing nozzle inserted into a container mouth, a screw portion screwed into the inner periphery of the container mouth is provided, and a lid for closing a water jacket is provided. A through hole in which the upper end of the nozzle is closely inserted is provided at a substantially central portion, and a chuck mechanism for detachably chucking the upper end of the nozzle protruding above the through hole is provided on the upper surface of the lid. Is disclosed. Then, the apparatus holds the gas container equipped with the pressure feeding nozzle in a suspended manner on the lower surface of the lid, and in this state, transfers the gas container integrally with the lid,
The pressure expansion measurement is performed as described above. In the gas container, water is injected into the gas container prior to measurement,
After the measurement, drainage, drying, and the like are sequentially performed.

[0003] In the above apparatus, a rotating body which comes into contact with a periphery of an upper end opening of a container tube opening into which the nozzle is inserted is mounted on the outer periphery of the nozzle so as to be vertically screwably movable, and the opening is provided on a bottom surface of the rotating body. An annular seal member for sealing around is provided, and after screwing the lower end of the nozzle, the rotating body is screwed downward to press the seal member around the opening to prevent leakage of high-pressure water fed from the nozzle. It has become.

[0004]

According to the above-described conventional measuring apparatus, a gas supply nozzle is previously attached to a gas container supplied to a pre-measurement position (a carry-in port), and a pressure-feeding nozzle is attached to the gas container before the measurement. A cumbersome operation of removing the pressure-feeding nozzle from the gas container carried out from the outlet) is required. In addition, the attachment and detachment is the work of screwing the lower end of the nozzle to the container mouth or rotating the pressure feeding nozzle to remove the screw, resulting in a large time loss, water injection, measurement, and measurement before measurement. In addition, there is a possibility that the operation efficiency in the case where each operation process such as the subsequent drainage and the subsequent drying is converted into a line may be reduced, and it is difficult to automate the operation, thereby affecting the number of workers.

Further, in the conventional apparatus, a sealing member for sealing around the upper end opening of the container tube mouth is attached to the bottom surface of a rotating body which is screwably mounted on the outer periphery of the nozzle, and the sealing is performed by downwardly screwing the rotating body. Since the member is brought into pressure contact with the periphery of the opening, there is a problem that the seal member is rubbed around the opening each time the pressure contact is performed, and the seal member is severely worn.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is to enable a nozzle to be attached to and detached from a gas inlet of a gas container by a one-touch method, and to provide a pre-measurement position, a measurement position, and a measurement position. It is an object of the present invention to provide a new pressure-resistant expansion measuring device which contributes to efficiency, automation, and promotion of small-sized operation when a gas container is transferred in a suspended state between rear positions. Another object of the present invention is to provide a measuring device capable of minimizing abrasion of a sealing member for sealing around an upper end opening of a container mouth.

[0007]

In order to achieve the above object, according to the present invention, a nozzle for supplying high-pressure water to a gas container is fixed in a skewered manner substantially at the center of a lid closing a water jacket. The nozzle includes a nozzle body having a lower end portion removably inserted into and removed from the container tube opening, a locking ball removably inserted into an appropriate number of loading holes provided in the peripheral wall of the lower end portion, and a shaft core in the nozzle body. Are movably accommodated in a sliding hole formed in the vertical direction, and when in the lowered position, each locking ball is urged outward to protrude from the loading hole, while when in the raised position, the urging force is released. An urging shaft formed so that each locking ball is buried in the loading hole, and up-down driving means for vertically moving the urging shaft between the raised position and the lowered position. Hang the gas container on the lower surface of the lid by engaging the lower opening edge of the container port Held in the lid in the holding state, before the measurement, the measurement is moved parallel to the vertical position after measurement, and is summarized in that formed so as to lift at their respective vertical position.

According to the above construction, after the lower end of the nozzle body with the biasing shaft raised is inserted into the container port, the biasing shaft is lowered to cause each locking ball to protrude from the loading hole. The nozzle body is prevented from coming off when the locking ball engages with the lower end opening edge of the container tube opening, the nozzle body is integrally attached to the gas container, and the gas container is provided on the lower surface side of the lid via the nozzle body. Is suspended and held. Therefore, the lid is moved in parallel and moved up and down as needed to move the gas container at the pre-measurement position to the measurement position, and the lid is lowered to submerge the gas container in a water jacket so that the gas is immersed. High pressure water is pumped into the container to measure the pressure resistance expansion. Further, the lid is raised and moved in parallel to transfer the gas container to the position after the measurement. At this position, the urging shaft is raised so that each locking ball is buried in the loading hole. The engagement with the lower end opening edge of the container port is released, and the nozzle body is released from the gas container. That is, the attachment of the nozzle body to the gas container at the pre-measurement position and the removal of the nozzle body from the gas container transferred to the post-measurement position are performed in a substantially one-touch manner by selectively raising or lowering the biasing shaft. be able to.

As the vertical drive means for vertically moving the biasing shaft, for example, a driving cylinder such as an air cylinder is connected to the upper end of the biasing shaft, and the biasing shaft is vertically moved by driving the cylinder. However, in addition to this, one of a screw member and a nut member that are screwably engaged with each other is attached to the outer periphery of the biasing shaft, and the other is rotationally driven by the operation of the drive motor, Various structures can be applied, such as forming the urging shaft to move up and down by vertical screwing of a screw member or a nut member.

When pressure-resistant expansion measurement is performed by feeding high-pressure water into a gas container suspended in a water jacket in a suspended manner, the pressure between the container tube and the nozzle body is increased in order to improve the measurement accuracy. It is preferable to seal around the upper end opening of the container port to prevent water leakage. As the sealing structure, it is possible to employ the sealing means provided in the above-mentioned conventional measuring device, but in this case, as described above, there is a problem that the seal member is severely worn. Therefore, in the present invention, claim 2
As described, a neck seal ring abutting around the upper end opening of the container tube opening into which the lower end of the nozzle body is inserted is slidably fitted up and down on the outer periphery of the nozzle body, and is attached to the bottom surface of the neck seal ring. An annular sealing member for sealing around the upper end opening; and a sliding drive means for vertically sliding the neck seal ring.

In this case, the sealing member moves up and down integrally with the neck seal ring, and presses and separates around the upper end opening of the container tube opening. Such rubbing friction does not occur. Therefore, highly accurate pressure expansion measurement can be performed while reducing the wear of the seal member and the frequency of replacement thereof.

The sliding drive mechanism of the neck seal ring includes:
As with the vertical drive means for vertically moving the biasing shaft, various drive mechanisms such as using a drive cylinder or a screw member / nut member can be adopted. A neck seal ring is provided at the lower end of an outer cylinder fitted up and down slidably around the outer periphery of the middle and high portions of the nozzle body, and a trapezoidal screw rotatably supported above the nozzle body; The sliding drive means is formed by a trapezoidal nut that slides up and down by rotation of the screw, a connecting member that connects the trapezoidal nut and the outer cylinder, and a drive unit that rotationally drives the trapezoidal screw. .

[0013] In this case, the trapezoidal nut and the trapezoidal screw are used to act as stoppers at the raised and lowered positions of the neck seal ring.
That is, it is useful to prevent loosening at the sealing position where the sealing member is pressed against the upper end opening of the container mouth. Further, since most of the components constituting the sliding drive means can be arranged along the axial direction of the nozzle body, it is also useful for reducing the size and space of the apparatus.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 100 denotes a high-pressure gas container (hereinafter, referred to as a "container") 100, A denotes a pressure-resistant expansion measuring apparatus of the present embodiment, A1 denotes a position before and after measurement, A2 denotes a measurement, and A3 denotes a lifting position after the measurement. B is a water injection stage set upstream of the pre-measurement position A1, C is a drainage stage set downstream of the post-measurement position, D is a drying stage set downstream of the drainage stage C, and E is a drying stage. A finish drying stage set downstream of the stage D is shown. Each of the work stages B to E has a container before the pressure expansion measurement.
A water injection device B 'for injecting water into the container 100, a drainage device C' for draining from the container 100 after measurement, a drying device D 'for drying the inside of the container 100 after draining, and a finish drying device E' for finish drying. Is installed.

On the upstream side of the water injection stage B, a container loading path F
On the downstream side of the finishing and drying stage E, a container discharge path G is provided, and at the end of the container transfer path F, the container 100 reaching the terminal is sent to the water injection stage B, and further on the water injection stage B. A transport means H for sending the container 100 to the pre-measurement position A1 is provided. The container carry-in path F and the container carry-out path G are, for example, a conveyor or the like, and the transport means H is composed of a pusher H1, a conveyor H2, or the like which moves forward and backward by operation of a drive cylinder or the like. From the post-measurement position A3 to the drainage stage C, the drying stage D, the finish drying stage E, and the container unloading path G, the container 100 at the position A3 or each of the stages C to E is downstream stage C to E or container unloading. Send to road G sequentially
A conveying means H ′ composed of a conveyor is provided.

A rail 1 is erected above a part extending from the pre-measurement position A1 to the post-measurement position A3 via the measurement position A2, and a suspension slid along the rail 1 on the rail 1. The substrate 3 is supported substantially horizontally via the member 2. The suspension member 2 is arranged in the rail 1 and is linked to an endless chain 5 running by driving of the motor 4. The suspension member 2, the motor 4 and the endless chain 5 form a parallel drive mechanism. The substrate 3 is formed so as to selectively move in parallel above the positions A1 to A3 before, after and after the measurement by driving. On the lower surface side of the substrate 3, a lid 6 for closing a water jacket 10 described later is supported substantially horizontally by a suspending member 7 such as a chain, and a lifting mechanism (elevation drive mechanism) 8 provided on the substrate 3. By lifting and extending the hanging member 7, the lid 6 can be raised and lowered at positions A1 to A3 before, after, and after the measurement while maintaining the substantially horizontal state. A nozzle 9 for supplying high-pressure water to the container 100 is inserted into a through hole 6 a provided at a substantially central portion of the lid 6, and is attached in a skewered manner so as to penetrate the lid 6.

At the measurement position A2, a water jacket 10 for measuring the pressure expansion of the container 100 is installed. Is configured to be performed. The details of the pressure expansion measurement method and the configuration relating to the measurement are substantially the same as those described in Japanese Utility Model Publication No. Sho 59-42675 previously proposed by the present applicant, and thus description thereof is omitted here.

Hereinafter, the details of the configuration of the nozzle 9 will be described with reference to FIGS. The nozzle 9 has a lower end 11a
Nozzle body 11 for removably inserting a nozzle into container mouth 101
And an appropriate number of loading holes 12 provided in the peripheral wall of the lower end 11a.
The locking balls 13 are respectively mounted so as to be freely retractable and retractable, and are accommodated in a sliding hole 14 formed in the axial direction in the nozzle body 11 so as to be movable up and down.
Is urged outward to protrude from the loading hole 12, while the urging force is released and the locking balls 1
3 is provided with a biasing shaft 15 formed so as to be buried in the loading hole 12.

The nozzle main body 11 has a bottom end 11 a having a cylindrical shape with a bottom, which is formed so as to be freely inserted into and removed from the container mouth 101.
1a is composed of a substantially cylindrical large-diameter portion 11b continuously provided at the upper end,
The inner circumference has a bottomed sliding hole 14 along the axial direction. The protruding end of the lower end portion 11a is formed in a tapered shape so that it can be smoothly inserted into and removed from the container port 101, and a charging hole 12 is formed in a peripheral wall immediately above the tapered portion 11c.
Three portions are formed at equal intervals in the circumferential direction of the lower end portion 11a. The loading hole 12 penetrates and penetrates the peripheral wall so that the locking ball 13 can be loosely fitted into and out of the hole, but the opening at the inner end facing the sliding hole 14 prevents the locking ball 13 from dropping inward. The outer end opening facing the outside of the nozzle body 11 is formed so as to allow the locking ball 13 to be inserted therein, and a stopper ring (not shown) for preventing the locking ball 13 from dropping outside. (Not shown) is attached to the outer periphery of the lower end 11a.

The urging shaft 15 is accommodated in the sliding hole 14 so as to be able to move up and down, and at least the lower end 15a of the urging shaft 15 is in the lowered position when the urging shaft 15 is in the descending position in the sliding hole 14 (FIGS. 6), it is formed with an outer diameter that can be urged to abut against the locking ball 13 in each of the loading holes 12 and push the locking ball 13 outward. When the biasing shaft 15 is in the raised position in the sliding hole 14 (see FIGS. 2 and 3), the lower end 15a separates from each locking ball 13 and the biasing force is reduced. It is formed at the position where it is released. The lower end 15a
When the urging shaft 15 is at the ascending position, each locking ball 13 hits the peripheral surface (tapered surface) of the protruding end 15bc without completely separating from the urging shaft 15. The aforementioned urging force is released.
Accordingly, when the urging shaft 15 is displaced from the lowered position to the raised position, the urging force is quickly released, so that the lifting stroke of the urging shaft 15 can be reduced, and each locking ball can be moved. 13 can also be prevented from falling inward.

The raising position and the lowering position of the urging shaft 15 are set by vertical driving means 16 formed by a driving cylinder or the like. That is, the upper end 15c of the urging shaft 15 is formed so as to protrude from the upper end of the large diameter portion 11b of the nozzle body 11 and extend upward, and the protruding end 15d is connected to the rod of the drive cylinder 17 via a coupling or the like. The urging shaft 15 is slid by the driving of the driving cylinder 17,
It is formed so as to be displaced between an ascending position and a descending position.

The nozzle 9 has a high pressure water supply path. In the supply path, a water supply port 20 is opened at an appropriate portion of a portion of the peripheral wall of the nozzle main body protruding on the upper surface side of the lid 6 so as to communicate with the slide hole 14. The lower end portion 15a of the biasing shaft located near the lower end and the lower end portion 11a of the nozzle body are communicated with the sliding hole 14 so that the water passage hole 21,
A plurality (two in this example, three at equal intervals) are formed at appropriate intervals in the circumferential direction of the lower ends 15a, 11a. The lower end portion 15a of the biasing shaft has a water outlet 23 formed at the tip thereof and a water passage 24 communicating with the water hole 21. Further, the tapered portion 11c of the nozzle body 11
In addition, a plurality of water outlets 25 are formed at appropriate intervals in the circumferential direction of the tapered portion 11c (three places at equal intervals in this example), and the water outlets 25 communicate with the sliding holes 14, respectively.
Thereby, high-pressure water supplied by connecting a hose or the like to the water supply port 20 passes through the sliding hole 14, the water passage hole 21, the water passage 24, the water discharge port 23, the bottom of the slide hole 14, and the water discharge port 25. And is supplied into the container 100. In addition, the sliding hole 14, the water passage hole 22, the nozzle body 11, and the container port 101
Is supplied into the container 100 through a narrow gap between the two.

A neck seal ring 26, which comes into contact with the periphery of the upper end opening 102 of the container port 101 into which the lower end 11a is inserted, is fitted on the outer periphery of the lower end 11a of the nozzle body so as to be slidable up and down. An annular seal member 27 for sealing around the upper end opening 102 is provided on the bottom surface of the neck seal ring 26. The neck seal ring 26 is vertically slidably fitted around the outer periphery of the middle and high portions of the nozzle body 11, and the above-described through hole 6a
Is fixed to the lower end of an outer cylinder 28 slidably fitted to the outer cylinder 28 so as to slide up and down integrally with the outer cylinder 28.

A concave portion 30 for bearing is formed at the upper end of the nozzle body 11, and a rotary cylinder 32 loosely fitted to the outside of the urging shaft 15 and having a trapezoidal screw 31 on the outer periphery is rotatably supported. An elevating cylinder 34 having a trapezoid nut 33 screwed to the trapezoidal screw 31 formed on the inner peripheral surface is screwed onto the outside of the rotary cylinder 32, and the elevating cylinder 3 is rotated by the rotation of the trapezoidal screw 31.
4 (trapezoidal nut 33) is formed to slide up and down.

A flange 28a is provided at the upper end of the outer cylinder 28 projecting toward the upper surface of the lid 6, and the flange 28a and the elevating cylinder 34 are provided.
(Trapezoidal nut 33) A connecting member 35 is provided between the outer cylinder 28 and the outer peripheral part to connect the outer cylinder 28 to the elevating cylinder 34.
1 is provided with a driving means 40 for rotatingly driving the neck seal ring 26 to form a sliding driving means for vertically sliding the neck seal ring 26.

The driving means 40 has a driving motor 42 attached to the lower surface of a support plate 41 which is slidably fitted to a small diameter portion 32a provided at the upper end of the rotary cylinder 32 and is supported substantially horizontally. Drive gear 44 fitted to the output shaft 43
And a driven gear 45 loosely fitted on the outer side of the upper end of the urging shaft 15 so as to rotate integrally with the rotary cylinder 32, and the rotary cylinder 32 is integrally rotated with the gear 45 by the driving of the motor 42 in the forward and reverse directions. The lifting cylinder 34 (the trapezoid nut 3
3) and the outer cylinder 28 slides up and down together, and the descent thereof causes the neck seal ring 26 to abut around the upper end opening 102 to press the sealing member 27 in pressure, thereby sealing the periphery of the upper end opening 102 in a watertight manner. Constitute.

The drive motor 42 can be composed of various drive motors such as an electric motor and an air motor. In this embodiment, a rotary actuator is used to obtain a predetermined angle of rotation with a predetermined drive force, and a seal member is used. 2
7 to form a watertight seal around the upper end opening 102.

In the vicinity of the upper end of the nozzle body 11, a support plate 47, which is locked to the upper surface of the lid 6 by a stopper 46, is slidably fitted, and a support rod is provided between the support plate 47 and the support plate 41. The support plate 41 is supported by mounting the support plate 48.
As shown in the figure, a hanging member 7 for hanging the lid 6 branches the lower end into two or more branches, and connects its ends 7a along the outer periphery of the lid 6 at equal intervals, and at a branch point 7b. A spring 51 is interposed between the frame 50 and the substrate 3 attached below, so that the swing 51 when the container 100 is suspended is absorbed by the spring 51.

Hereinafter, the measurement of the pressure resistance expansion of the container 100 by the apparatus of this embodiment will be described. In FIG. 1, the container loading path F
Is transported to the water injection stage B by the conveying means H, and after being injected by the water injection device B ', is sent to the pre-measurement position A1 by the conveying means H.

At the pre-measurement position A1, the substrate 3 and the cover 6 are on standby above it, and a hoisting mechanism (elevation drive mechanism)
8, the lid 6 is lowered, the lower end 9a of the nozzle body 11 is inserted into the container opening 101, and each locking ball 13 is engaged with the lower opening edge 103 of the opening 101. 6 The container 100 is held in a suspended state on the lower surface side. Next, the lid 6 is raised by the operation of the winding mechanism 8, and the lid 6 is moved in parallel to the measurement position A2 by the driving of the motor 4.

At the measurement position A2, the lid 6 moves down to
The container 0 is closed and the high-pressure water is pumped by the nozzle 9 into the container 100 suspended in the water jacket 10 in a suspended manner, thereby measuring the pressure resistance expansion of the container 100. After the measurement,
The lid 6 moves up and moves in parallel to the position A3 after the measurement, the container 100 is placed at the position A3 after the measurement, and then the engagement between each locking ball 13 and the lower opening edge 103 of the pipe opening 101 is released. Then, the container 100 comes off the lid 6.

Next, the container 100 is sent to each of the stages C to E for drainage, drying and finish drying by the operation of the conveying means H ', and after each operation of drainage, drying and finish drying is performed, it is unloaded by the unloading path G. I do.

The attachment / detachment of the nozzle body 11 to / from the container port 101 at the above-described pre-measurement position A1 and the rear position A3 is as follows.
It is made almost one-touch. That is, the position A1 before measurement
In this case, the urging shaft 15 is in the raised position by the operation of the cylinder 17, and each locking ball 13 is retracted toward the sliding hole 14 (inward). In this state, as shown in FIGS. Then, the lower end 11a of the nozzle body 11 is inserted into the container port 101. Thereafter, when the urging shaft 15 is lowered to the lowered position by the operation of the cylinder 17, the lower end portion 15a
The locking balls 13 are urged so as to be pushed outward so that the locking balls 13 project from the loading holes 12 (see FIG. 4).

Next, when the lid 6 is raised by the operation of the winding mechanism 8, the stopper 46 hits the lid 6 and the nozzle body 11 is raised integrally with the support plate 47, so that each locking ball 1 is lifted.
The nozzle body 11 is integrally attached to the container 100 by engaging the lower end opening edge 103 of the container mouth 101 with the nozzle body 3, and the container 100 is suspended and held by the nozzle body 11. At this time, a slight gap is formed between the neck seal ring 26 and the upper end opening 102 of the pipe port 101 (see FIG. 5).

From this state, the outer cylinder 28 is lowered by the operation of the drive motor 42, and the neck seal ring 26 is
2 and the sealing member 27 is pressed into contact.
Around the upper end opening 102 of the 101 is sealed in a watertight manner (see FIG. 6). At this time, the pressure contact of the seal member 27
Is carried out in a state where the bottom is deformed due to long-term use or the like, and even if the container 100 is difficult to vertically stand in an upright state, the container 100 is almost positioned around the upper end opening 102 of the pipe opening 101. The sealing member 27 can be pressed uniformly, and a highly accurate seal is achieved.

At the post-measurement position A3, the above operation is performed as shown in FIGS.
The reverse is done over FIG. 3, i.e. the container on said position A3
After placing 100, the urging shaft 15 is raised so that each locking ball 13 is buried in the loading hole 12 to release the engagement with the lower opening edge 103, and the nozzle body 11 is pulled out of the container 100.

As described above, an example of the embodiment has been described, but the pressure-resistant expansion measuring apparatus according to the present invention is not limited to the above-described example.
Elevating position A before and after each work stage B-E and measurement
1, A3 and the like are selectively set according to the layout and scale of the measurement place. In addition, each drive mechanism,
The drive means and the like are not limited to those described above, and modifications may be made without departing from the spirit of the present invention.

[0038]

As described above, the pressure-resistant expansion measuring device of the present invention allows the locking ball to protrude and retract by the operation of the urging shaft to prevent the nozzle body inserted into the container tube from coming off and to release it. Therefore, attachment and detachment of the nozzle main body with respect to the gas container can be performed by simple operations such as insertion / removal of the nozzle main body to / from the container tube opening and lifting / lowering of the urging shaft. Therefore, as compared with a conventional apparatus having a nozzle which is configured to be attached to the container pipe by screwing means and is difficult to attach and detach, it can be quickly and easily attached to and detached from the gas container with a substantially one-touch method. Provide a pressure expansion measurement system that is extremely useful for increasing the efficiency, automation, and reducing the number of pressure expansion measurement systems configured to sequentially supply gas containers by arranging various pre-operation stages and post-operation stages along the transport path. did it.

According to the second aspect of the present invention, the sealing member is pressed against and separated from the periphery of the upper end opening of the container port by vertical movement (thrust). It is possible to perform high-precision pressure-resistant expansion measurement while reducing the number of replacements and reducing the frequency of replacement.

In the third aspect, the trapezoidal nut and the trapezoidal screw are used to reliably prevent the neck seal ring from loosening at the lowered position (the seal position where the seal member is pressed against the upper end opening of the container mouth). The effect according to claim 2 is made more effective, and most of the components of the sliding drive means are arranged along the axis of the nozzle axis, so that miniaturization and space saving of the device can be promoted. It has many effects.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an embodiment of a pressure expansion measurement apparatus according to the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1;

FIG. 3 is an enlarged sectional view of a main part showing a use state.

FIG. 4 is an enlarged sectional view of a main part showing a use state.

FIG. 5 is an enlarged sectional view of a main part showing a use state.

FIG. 6 is an enlarged sectional view of a main part showing a use state.

[Explanation of symbols]

 6: Lid 8: Hoisting mechanism (elevating drive mechanism) 9: Nozzle 10: Water jacket 11: Nozzle body 12: Loading hole 13: Locking ball 14: Sliding hole 15: Urging shaft 16: Vertical drive means 20: Water supply port 25: water discharge port 26: neck seal ring 27: seal member 28: outer cylinder 31: trapezoidal screw 33: trapezoidal nut 35: connecting member 40: driving means

Claims (3)

[Claims] 1. A measuring device for pressure-resistant expansion measurement by feeding high-pressure water into a gas container suspended in a water jacket in a suspended manner, comprising: a lid for closing the water jacket; and measuring the lid. A parallel drive mechanism for moving in parallel to each of the elevation positions before, after, and after the measurement, an elevation drive mechanism for elevating the lid at each of the elevation positions, and a gasket fixed at the center of the lid in a skewered manner; A nozzle for supplying high-pressure water to the container, wherein the nozzle has a lower end portion that can be freely inserted into and removed from the container port, and an appropriate number of loading holes provided in the peripheral wall of the lower end portion. The loaded locking ball and the sliding hole formed in the axial direction in the nozzle main body are vertically movably accommodated, and when in the lowered position, each of the locking balls is urged outward from the loaded hole. When it is in the raised position, the urging force is released to release each locking ball. An urging shaft formed so as to be buried in the loading hole; and up-down driving means for vertically moving the urging shaft between the raised position and the lowered position. A gas container pressure-resistant expansion measuring device formed so as to be held in a suspended state on the lower surface side of the lid by engaging with the lid. 2. A neck seal ring which comes into contact with a periphery of an upper end opening of a container tube opening into which a lower end portion of the nozzle body is inserted is slidably fitted up and down on an outer periphery of the nozzle body, and is attached to a bottom surface of the neck seal ring. 2. A gas container pressure-resistant expansion measuring apparatus according to claim 1, further comprising an annular seal member for sealing around the upper end opening, and further comprising a sliding drive means for vertically sliding the neck seal ring. 3. A trapezoidal screw which is provided at the lower end of an outer cylinder fitted slidably up and down around the middle and high portions of the nozzle main body while being rotatably supported above the nozzle main body; The sliding drive means is formed by a trapezoid nut screwed into and sliding up and down by rotation of the trapezoidal screw, a connecting member for connecting the trapezoidal nut and the outer cylinder, and a driving means for rotating and driving the trapezoidal screw. An apparatus for measuring pressure resistance expansion of a gas container according to claim 2.