JPH1122824A - Vessel sealing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vessel sealing device which eliminates necessity for the installing space in the direction over the height, allows easy attachment to the vessel, and can generate a strong sealing force while the structure remains compact. SOLUTION: A vessel sealing device has the first flange 14 to be attached to one vessel and the second flange 15 to be attached to another vessel or a lid, and a taper surface 18 reducing toward the forefront is formed on at least one of the surfaces of the peripheral edges of the flanges, and a U-shaped clamp block 19 is installed as advancing to and retreating from the taper surface 18 horizontally by a block advancing/retreating device 27 and is furnished with clamp surfaces 25 and 26 which work interlocking with the advance of the block 19 and are put in slidable pressure contact with the surface of the peripheral edges of the first and second flanges 14 and 15, and thereby the second flange 15 is strongly clamped to the first flange 14 through the cooperative work of the taper surface 18 and block 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container sealing device for an opening in various containers, and more particularly to a container sealing device that can be used as a vacuum sealing device for a vacuum container.

[0002]

2. Description of the Related Art Conventionally, as a fastening device for automatically connecting horizontal flanges 73 and 74 which receive high heat in an upper tank 71 and a lower tank 72 of a steelmaking vacuum tank 70 shown in FIG. There is a flange fastening device B disclosed in Japanese Patent Laid-Open No. 92540, and the configuration thereof is shown in FIGS.

As shown, a pair of hooks 75 are pivotally connected to a hook beam 76 by pins, and the lower ends thereof are detachably hooked to the lower surface of a horizontal flange 74 of a lower tank 72. The hook beam 76 is pivotally connected to a spherical bearing 78 at the tip of the rod of the hook vertical cylinder 77 by a pin, and the main body of the hook vertical cylinder 77 is fixed to the upper surface of the horizontal flange 73 of the upper tank 71. . Roller 7 for preventing fall is provided above hook beam 76.
9 guides the vertical stroke of the hook vertical cylinder 77 and prevents the hook beam 76 from falling from the upper tank 71 to the outside.

The hook swinging roller 80 is provided in the upper tank 7.
1 and is set so as to contact the upper lower surface of the hook 75. When the horizontal flange 73 of the upper tank 71 and the horizontal flange 74 of the lower tank 72 are fastened, the hook swing roller 80 and the hook 75
A gap is provided between the lower surfaces.

With the above construction, when the rod of the hook up-and-down cylinder 77 is pulled in, the hook swinging roller 80 operates and the lower end of the hook 75 swings in the opening direction after descending. By the extension, the lower end of the hook 75 swings in the closing direction and then rises to fasten the horizontal flanges 73 and 74 and compress the seal member opened between the horizontal flanges 73 and 74. Thereby, the sealing property can be ensured.

[0006]

However, the above-mentioned flange fastening device B still has the following problems to be solved. That is, as shown in FIG. 9, the flange fastening device B requires an installation space in a vertical direction which is a direction orthogonal to the horizontal flanges 73 and 74, and is used for steelmaking in a form as shown in FIGS. 7 to 10. In the vacuum chamber 70, an installation space can be secured. However, the horizontal flange 7
In a steelmaking vacuum tank or other container having a structure in which a sufficient installation space cannot be secured in a direction orthogonal to the directions 3 and 74, that is, in the vertical direction, the installation of the above-described flange fastening equipment B becomes impossible. Therefore, in this case, the upper tank, the lid, and the like must be connected to the lower tank using a manual bolt, and the connecting operation is complicated.

If a lance insertion hole is provided in the canopy 81 of the steelmaking vacuum tank 70, the lance will be subjected to lifting resistance by a scraper or gland packing when the lance is raised, and the hook vertical cylinder 77 However, it is necessary to have enough cylinder force to overcome this lifting resistance. Therefore, the hook up-and-down cylinder 77 needs a large-capacity driving force in consideration of these resistances in addition to the sealing force.

[0008] The present invention has been made in view of the above circumstances, and can be easily installed in a container by eliminating the need for installation space in the height direction, and can provide a strong sealing force while ensuring a compact structure. It is an object to provide a container sealing device that can be obtained.

[0009]

According to the present invention, there is provided a semiconductor device comprising:
In the container sealing device described above, a first flange is attached to an opening provided at the top of the container, and a second flange attached to another container or a lid is attached to the first flange in an overlapping state and sufficiently. In a container sealing device for coupling while ensuring a good sealing property, a tapered tapered surface is formed on at least one of the surfaces of the peripheral edges of the first and second flanges, and the peripheral edges of the first and second flanges are formed. Is disposed around the tapered surface by a block advance / retreat device. The U-shaped clamp block is disposed at the front end of the U-shaped clamp block in conjunction with the advance of the U-shaped clamp block. Then, a clamp surface which is slidably pressed against the surface of the peripheral portion of the first and second flanges is formed, and the tapered surface and the U-shaped clamp block cooperate with each other to form the first flange. It said second flange is strongly coupled to the flange.

According to a second aspect of the present invention, in the container sealing apparatus according to the first aspect, a rolling roller is attached to a leading end of the U-shaped clamp block, and the outer peripheral surface of the rolling roller causes the clamping. A surface is formed. The container sealing device according to claim 3 is the container sealing device according to claim 2, wherein the block advance / retreat device arranges a block advance / retreat cylinder in a horizontal state behind the U-shaped clamp block, Of the telescopic rod is pivotally connected to the rear of the U-shaped clamp block by a pin so as to be freely rotatable, and the rear of the block advance / retreat cylinder is pivotally connected to the top of the container by a pin. And at the top of the container,
A horizontal support guide for supporting the rolling roller so as to be able to move forward and backward is attached.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. This embodiment is a case where the container sealing device A is applied to the steelmaking vacuum tank 10.

As shown in FIG. 1, an opening 12 is provided at the center of the top of a canopy 11 of a steelmaking vacuum tank 10 which is an example of a container, and a flange mounting cylinder 1 is provided on the opening 12.
A first flange 14 made of an annular plate is continuously provided on the upper surface of the flange mounting cylinder 13. On the upper surface of the first flange 14, a second flange 15 having substantially the same outer diameter as the first flange 14 is placed in an overlapped state via an annular seal packing S (see FIG. 3). In the upper surface of the central portion of the second flange 15,
The base of a lance guide machine frame 16 which is an example of another container or lid is provided coaxially. A lance 17 is inserted into the lance guide machine frame 16 so as to be able to advance and retreat in the axial direction. The tip of the lance 17 can be inserted into the steelmaking vacuum chamber 10 through the opening 12 of the canopy 11. Have been.

In the steelmaking vacuum chamber 10 having the above-described configuration, the present embodiment employs a first
A container sealing device A that can clamp the flange 14 and the second flange 15 from the horizontal direction.

That is, as shown in FIGS. 1 to 3, at least two surfaces 180 ° opposite to each other at the peripheral edge of the second flange 15 have tapered tapered surfaces 1 each.
8 are formed.

A U-shaped clamp block 19 is provided so as to face the peripheral edge of the second flange 15 having the tapered surface 18. As shown in FIGS. 3, 5 and 6, the U-shaped clamp block 19 is provided with a block body 20 having a rectangular shape in a side view, and is connected to upper and lower portions of the front surface of the block body 20. And upper clamp arms 21 and 22 extending parallel to each other with a parallel interval therebetween. And above,
Rollers 2 are provided at the tips of the lower clamp arms 21 and 22.
3 and 24 are attached, and clamping surfaces 25 and 26 are formed on the outer peripheral surfaces of the rolling rollers 23 and 24, respectively. The gap between the clamp surfaces 25 and 26 is slightly smaller than the sum of the thickness of the liner 15a in which the seal packing S is mounted on the first and second flanges 14 and 15.

Therefore, as shown in FIG.
5, 26, the first and second flanges 14, 15
When the horizontal advance output is applied to the U-shaped clamp block 19 by the block advance / retreat device 27 described later while sandwiching the upper and lower edges of the peripheral edge of the horizontal edge, the horizontal advance output is generated by the wedge effect generated by the tapered surface 18 and the clamp surface 25. Since the flanges 14 and 15 can be tightened with a strong clamping force that is several times higher, a sufficient sealing force can be obtained between the flanges 14 and 15.

Next, the U-shaped clamp block 19 is disposed behind the U-shaped clamp block 19 and
The block advance / retreat device 27 that moves horizontally toward the center of the block will be described. In the present embodiment, as shown in FIGS. 1 to 4, the block advancing / retreating device 27 installs a cylinder mounting base 28 on the peripheral edge of the top of the canopy 11, and
The rear part of the block advance / retract cylinder 29 is pivotally connected to the upper surface of the block 8 by a pin 28a in the form of a center trunnion so as to be swingable. It is constituted by being pivotally connected to the rear part by a pin 20a so as to be pivotable or swingable.

As shown in FIGS. 3 and 4, a block rotation preventing rod 30 is provided below the block moving cylinder 29.
a are disposed in parallel, and the block rotation preventing rod 3
The front end of the block 0 is connected to the block body 20 of the U-shaped clamp block 19, and the rear end is loosely fitted in a vertically long hole provided in the regulating plate 31 attached to the front of the block advance / retreat cylinder 29. It is fitted and supported. On the other hand, below the U-shaped clamp block 19, the block support 3
2 are arranged, and the block support 32 is attached to the top of the canopy 11. And the block support 32
A plate-like horizontal support guide 33 on which the rolling roller 24 attached to the tip of the lower clamp arm 22 is supported so as to be able to roll and advance and retreat is formed on the upper surface of the lower arm 22.

With this configuration, by operating the block advance / retreat cylinder 29, the U-shaped clamp block 19 can advance toward the center of the opening 12 while maintaining the horizontal state, as shown in FIGS. 3 and 5. , The first and second flanges 14, 1 by the clamping surfaces 25, 26.
5 can easily and reliably sandwich the upper and lower surfaces of the peripheral portion, that is, can be slidably pressed. That is, when the U-shaped clamp block 19 is advanced, the horizontal support guide 33 is moved.
Rollers 23, 24 generated when the rollers 23, 24 move from the side to the tapered surface 18 side of the second flange 15
The U-shaped clamp block 19 and the block advancing / retracting cylinder 29 can freely follow the displacement, and the clamping operation can be performed smoothly.

In this embodiment, as shown in FIGS. 2 and 6, a limit switch mounting base 34 is continuously provided on the block support base 32, and the block advance / retreat on the limit switch mounting base 34. A pair of limit switches 35 and 36 for regulating the stroke of the cylinder 29 are attached.

Next, the operation of clamping the first and second flanges 14 and 15 by the container sealing device A having the above-described configuration will be described with reference to FIGS. First, the lance guide machine frame 16 to which the second flange 15 is attached at the lower part is moved by a crane to just above the canopy 11 of the steelmaking vacuum tank 10 and is lowered to move the second flange 15 to the first flange. Is placed on the flange 14 in a superposed state. The U-shaped clamp block 19 is advanced by operating the block advancing / retracting cylinder 29, and the upper and lower peripheral portions of the first and second flanges 14, 15 are sandwiched between the clamp surfaces 25, 26, and the tapered surface 18. Clamp surface 25
Due to the wedge effect, the flanges 14 and 15 can be firmly tightened, and the lance guide machine frame 16 can be securely attached to the canopy 11 of the steelmaking vacuum tank 10.

On the other hand, when the lance guide machine frame 16 is to be removed from the canopy 11 of the steelmaking vacuum chamber 10, the block advance / retreat cylinder 29 is actuated and the U-shaped clamp block 19 is operated.
Is disengaged from the upper and lower surfaces of the clamp surfaces 25, 26 and the first and second flanges 14, 15, and then the lance guide is moved from the canopy 11 of the steelmaking vacuum chamber 10 by a crane. The second flange 15 can be easily removed from the first flange 14 by lifting the machine frame 16.

In the above embodiment, the clamp surfaces 25 and 26 are not formed by the outer peripheral surfaces of the rolling rollers 23 and 24 but by the lower surface of the upper clamp arm 21 and the upper surface of the lower clamp arm 22 of the U-shaped clamp block 19. The wedge effect can be similarly obtained by forming the ridge.

However, it is preferable that the clamp surfaces 25, 26 are formed on the outer peripheral surfaces of the rolling rollers 23, 24. When the clamp surfaces 25 and 26 are formed not by the outer peripheral surfaces of the rolling rollers 23 and 24 but by the lower surface of the upper clamp arm 21 and the upper surface of the lower clamp arm 22 of the U-shaped clamp block 19, the upper clamp arm 21 Large sliding frictional resistance is generated between the lower surface of the lower clamp arm and the tapered surface 18 and between the upper surface of the lower clamp arm 22 and the lower surface of the peripheral portion of the first flange 14, and the block advance / retreat cylinder 29 is retracted. While there is a possibility that the engagement between the U-shaped clamp block 19 and the first and second flanges 14 and 15 cannot be released, the clamp surfaces 25 and 26 are placed on the outer peripheral surfaces of the rolling rollers 23 and 24. When it is formed, the sliding frictional resistance can be remarkably reduced.
This is because the engagement with the first and second flanges 14 and 15 can be easily released.

As described above, the present invention has been described with reference to an embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and is described in the claims. It also includes other embodiments and modifications that can be considered within the scope of the matters described.

[0026]

In the container sealing device according to the first to third aspects, at least one of the peripheral surface of the first flange attached to the opening of the container and the second flange attached to the other container or the lid. A U-shaped clamp block is provided around the periphery of the first and second flanges so as to be able to advance and retreat horizontally toward the center of the opening by a block advance / retreat device. At the tip of the U-shaped clamp block, a clamp surface slidably pressed against the surface of the peripheral portion of the first and second flanges is formed in conjunction with the advance of the U-shaped clamp block, and the tapered surface is formed. The second flange is strongly connected to the first flange in cooperation with the U-shaped clamp block.

As described above, the U-shaped clamp block is advanced horizontally by the block advance / retreat device, and the first and second flanges can be clamped by pressing the clamp surface against the tapered surface, thereby enabling the height direction to be clamped. Since no installation space is required, even when a sufficient installation space cannot be secured above the container, the container sealing device can be easily attached. Further, the U-shaped clamp block is advanced horizontally by the block advance / retreat device, and the clamp surface thereof is pressed against the tapered surface so that the first wedge effect is utilized and the first clamping force is several times the thrust by the block advance / retreat device. And the second flange can be firmly clamped.

In the case where the container is a steelmaking vacuum tank, a large lifting force is applied to the second flange due to sliding resistance with a seal packing or the like when the lance is pulled out from the opening. Since the rigidity of the U-shaped clamp block allows the block to move, the horizontal thrust of the block advance / retreat device only needs to be equal to or more than the force required to move the U-shaped clamp block, and the size of the block advance / retreat device can be reduced.

In particular, in the container sealing device according to the second aspect, a rolling roller is attached to the tip of the U-shaped clamp block, and the outer peripheral surface of the rolling roller forms a clamp surface. Therefore, the sliding frictional resistance between the clamp surface and the surfaces of the first and second flanges can be significantly reduced, so that the engagement between the U-shaped clamp block and the first and second flanges can be easily released. .

According to a third aspect of the present invention, in the container sealing device, the block advance / retreat device arranges the block advance / retreat cylinder in a horizontal state behind the U-shaped clamp block, and attaches the front end of the telescopic rod of the block advance / retract cylinder to the U shape. A pin is pivotally connected to the rear of the clamp block by a pin, and the rear of the block advance / retract cylinder is pivotally connected to the top of the container by a pin, and a rolling roller is provided on the top of the container. A horizontal support guide that supports the back and forth is mounted. As described above, the U-shaped clamp block and the block advancing / retracting cylinder can freely follow the displacement of the rolling roller when the rolling roller moves from the horizontal support guide to the tapered surface side of the second flange, so that the clamping operation is performed smoothly. be able to.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a canopy of a steelmaking vacuum tank provided with a container sealing device according to an embodiment of the present invention.

FIG. 2 is a plan view of a canopy of a steelmaking vacuum tank provided with the container sealing device according to one embodiment of the present invention.

FIG. 3 is a partially enlarged side view of the same.

FIG. 4 is a view taken along the line II in FIG. 3;

FIG. 5 is a view taken along the line II-II in FIG. 3;

FIG. 6 is a view taken in the direction of arrows along the line III-III in FIG. 3;

FIG. 7 is a conceptual explanatory diagram of a conventional steelmaking vacuum tank.

FIG. 8 is a front view of a conventional flange fastening device.

FIG. 9 is a side view of the same.

FIG. 10 is a plan view of the same.

[Explanation of symbols]

Reference Signs List A container sealing device S seal packing 10 vacuum chamber for steelmaking 11 canopy 12 opening 13 flange mounting tube 14 first flange 15 second flange 15a liner 16 lance guide machine frame 17 lance 18 tapered surface 19 U-shaped clamp block 20 Block body 20a Pin 21 Upper clamp arm 22 Lower clamp arm 23 Roller roller 24 Roller roller 25 Clamp surface 26 Clamp surface 27 Block advance / retreat device 28 Cylinder mount 28a Pin 29 Block advance / retract cylinder 30 Telescopic rod 30a Block rotation prevention rod 31 Regulation Plate 32 Block support 33 Horizontal support guide 34 Limit switch mount 35 Limit switch 36 Limit switch

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroyuki Kono 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka New Nippon Steel Corporation Engineering Business Headquarters (72) Inventor Ryuji Fujita Ohara Nakahara, Tobata-ku, Fukuoka Prefecture No. 46 59 Inside Nippon Steel Plant Design Co., Ltd. (72) Inventor Kota Kudo 5-3 Tokaicho, Tokai City, Aichi Prefecture Inside Nagoya Works, Nippon Steel Corporation (72) Inventor Masahiro Uchida Tobata-ku, Kitakyushu-shi, Fukuoka Prefecture 46, Nakahara 59 Nippon Steel Plant Design Co., Ltd.

Claims (3)

[Claims] 1. A first flange is attached to an opening provided at the top of a container, and a second flange attached to another container or lid is attached to the first flange in a superposed state and has a sufficient seal. In the container sealing device for connecting while ensuring the performance, a tapered tapered surface is formed on at least one of the peripheral edge surfaces of the first and second flanges, and the first and second flanges are formed.
A U-shaped clamp block is provided around the periphery of the flange of the U-shaped clamp block so that the U-shaped clamp block can be horizontally advanced and retracted toward the tapered surface by a block advancing / retracting device. In conjunction with the advance of the block, a clamp surface slidably pressed against the surface of the peripheral portion of the first and second flanges is formed, and the tapered surface and the U-shaped clamp block cooperate with each other. The container sealing device, wherein the second flange is strongly connected to the first flange. 2. The roller according to claim 1, wherein a roller is attached to a tip of the U-shaped clamp block, and the outer peripheral surface of the roller forms the clamp surface.
The container sealing device as described in the above. 3. The block advance / retreat device disposes a block advance / retreat cylinder in a horizontal state behind the U-shaped clamp block, and attaches a front end of a telescopic rod of the block advance / retract cylinder to a rear portion of the U-shaped clamp block. And a pivotally connected pivotally connected pin with a pin, and a rear portion of the block advancing / retracting cylinder pivotally connected to a top of the container by a pin, and the rolling roller advances and retreats to the top of the container. 3. The container sealing device according to claim 2, further comprising a horizontal support guide for freely supporting the container.