JPH0541359B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a pressure medium in the press frame and the upper lid of the pressure vessel, so that when the pressure vessel is inserted into the press frame, the pressure medium is passed through the pressure medium passage. This invention relates to a press frame type hydrostatic pressurizing device that supplies pressure into the pressure vessel and pressurizes the inside of the same pressure vessel.

(Prior art) Press frame type isostatic pressurization devices (cold isostatic pressurization devices, hot isostatic pressurization devices) include () a method in which the pressure vessel is fixed and a press frame moves; ) There is a method in which the press frame is fixed and the pressure vessel moves. In the case of (), the pressure medium is supplied to the pressure vessel by a pressure medium passage provided in the pressure vessel or the upper cover of the pressure vessel, or by a pressure medium pipe permanently connected to the lower cover, and () In this case, a special pressure medium supply device is used.

The conventional example of the press frame fixed type hydrostatic pressurizing device () mentioned above is explained with reference to Figs. 4 to 6. 1 in Figs. An upper lid 4 equipped with a gasket 3 is removably fitted into the opening 2 of the container 1, and the upper lid 4 is removed using a lid fitting/removal device (not shown), and high-pressure treatment is performed from the opening 2. It is designed to input and take out raw materials. Also, 5 is the yoke 5a
and a yoke frame 5b, which has inner surfaces corresponding to both upper and lower end surfaces of the pressure vessel 1, and a fluid pressure cylinder 6 for moving the pressure vessel 1 in and out of the press frame 5, and a pressure medium nozzle. 7 is incorporated in the upper part of the press frame 5. Further, in FIG. 6, which shows an enlarged view of the arrowed portion in FIG. 5, numeral 8 represents a pressure medium supply hole, which is connected to a high pressure fluid supply/discharge device (not shown) via piping. Also 9
a, 9b are pressure fluid supply holes to the cylinder 11, 1
0 is a ram, the ram 10 is fixed to the press frame 5, and the cylinder 11 moves up and down between the ram 10 and the press frame 5 by fluid pressure. Further, 7 is a pressure medium nozzle fixed to the bottom 12 of the cylinder 11, and the nozzle 7 also moves up and down together with the cylinder 11 by fluid pressure. Further, 13 is a pressure medium chamber having a length corresponding to the stroke of the nozzle 7, and when the nozzle 7 rises, the upper gasket 14 of the nozzle 7
The upper part is narrower so that it fits in. Also 1
5, 16 are pressure medium sealing gaskets, 17, 1
Reference numerals 8, 19, 20, and 21 are fluid sealing gaskets, which are used to remove the lid 4 and throw raw materials to be subjected to high-pressure treatment into the pressure vessel 1 from the opening 2, and then close the upper opening of the pressure vessel 1 with the upper lid 4. , the hydraulic cylinder 6 is operated in the retracting direction to insert the pressure vessel 1 into the press frame 5 , and then the cylinder 11 is lowered and the nozzle 7 is inserted into the pressure medium passage of the upper lid 4 . Then, the pressure medium is supplied into the pressure vessel 1 through the pressure medium passage 8 → nozzle 7 → upper lid 4, and the raw material in the pressure vessel 1 is pressurized to perform high-pressure treatment. When the high-pressure treatment is completed, the above-mentioned parts are operated in reverse order to take out the high-pressure treated product from the pressure vessel 1.

(Problems to be Solved by the Invention) In the pressure vessel fixed type hydrostatic pressurization apparatus described in () above, the entire apparatus becomes large in size because the press frame, which is heavier and larger than the pressure vessel, is moved. In addition, after processing the high-pressure processed raw materials, it is necessary to create a gap between the inner surface of the press frame and the upper and lower lids fitted to the pressure vessel.
It is necessary to provide a device for this on the lid and remove the press frame from the pressure vessel, which complicates the structure and increases manufacturing costs.

In addition, the press frame fixed type hydrostatic pressurizing device shown in FIGS. 4, 5, and 6 of the above () has a pressure medium nozzle 7 incorporated in a yoke 5a that is moved up and down by a fluid pressure cylinder 11 to cover the upper part of the pressure vessel 1. 4, the structure of the pressure medium supply device becomes complicated and the manufacturing cost increases.
() Strict assembly accuracy is required of the device in order to align the pressure vessel 1 and the yoke frame 5b. () Since the structure of the pressure medium supply device is complicated and the device becomes large, there is a problem that mounting space cannot be secured with the steel plate laminated yoke frame 5b.

(Means for Solving the Problems) The present invention addresses the above-mentioned problems by providing a pressure medium in the press frame and the upper lid of the pressure vessel when the pressure vessel is inserted into the press frame. In a press frame type hydrostatic pressure pressurizing device that pressurizes the inside of the pressure vessel by supplying pressure medium through a pressure medium passage, the temperature can be raised by an upper lid lifting drive device that is attached to the upper lid to the pressure vessel. A sealing member is provided on at least one of the upper lid and the press frame to seal around a communication portion where the press frame side pressure medium passage and the upper lid side pressure medium passage communicate with each other. The present invention relates to a press frame type hydrostatic pressurizing device, and its purpose is to greatly reduce manufacturing costs. The assembly precision required of the device for alignment between the pressure vessel and the press frame can be greatly reduced. Another object of the present invention is to provide an improved press frame type hydrostatic pressurizing device that can secure a mounting space for a pressure medium supply device even if the yoke frame of the press frame is a laminated steel plate type.

(Function) The press frame type hydrostatic pressurizing device of the present invention is configured as described above, and the initial seal against the pressure medium between the press frame upper side and the upper lid is caused to move the upper lid by the upper lid lifting drive device. This is done by raising the lid and bringing it into close contact with the upper side of the press frame through the sealing member, and the sealing during pressurization is performed by the difference between the upper and lower pressure receiving areas of the upper cover (lower pressure receiving area > upper pressure receiving area), and self-sealing is achieved. Becomes a sticker.

(Example) Next, the press frame type hydrostatic pressurizing device of the present invention will be explained with reference to an example shown in FIGS. 1, 2, and 3.
1 is an upright cylindrical pressure vessel, 40 is the same pressure vessel 1
The interior 1 of the pressure vessel 1 is inserted into the upper opening of the pressure vessel 1.
A gasket 43 is attached to the outer peripheral surface of the lower part of the upper lid 40 to seal between the inner peripheral surface of the container and the upper surface of the upper lid 40. An O-ring 41 is attached thereto, and a drainage groove 44 for pressure medium that overflows when the upper lid 40 is fitted is provided on the upper surface. Further, 50 is a press frame that supports the upper lid 40 that receives pressure in the vertical direction, and 66 is the pressure vessel 1.
The press frame 50 has a laminated steel plate type yoke frame 60 and a pressure receiving plate 70.
0 has a pressure medium passage 71 connected to the pressure medium passage 42 of the upper lid 40, and the pressure medium passage 71 is connected to a high pressure fluid supply and discharge device (not shown) through piping.
is connected to. Further, 80 is an upper lid lifting/lowering drive device such as a hydraulic jack or a fluid pressure cylinder for lifting and lowering the upper lid 40.

Next, the operation of the press frame type hydrostatic pressurizing device will be specifically explained. The raw material to be subjected to high-pressure treatment is charged into the pressure vessel 1, the pressure vessel 1 is hermetically closed with the upper lid 40, and the pressure vessel 1 is inserted into the press frame 50 by a fluid pressure cylinder 66 provided in the press frame 50. Next, the upper lid 40 is pushed up by the upper lid lift drive device 80, and the upper surface of the upper lid 40 is
It is brought into close contact with the lower surface of the pressure receiving plate 70 via the ring 41. Next, a pressure medium is supplied into the pressure vessel 1 from the pressure medium supply passage 72 to pressurize the inside of the pressure vessel 1. At this time, as shown in FIG. 3, a downward force acts on the upper cover 40 due to its own weight and pressure on the upper surface, but this force is converted into a force pushing the upper cover 40 upward. Since the pressure inside the pressure vessel 1 is small, the upper lid 40 comes into close contact with the pressure receiving plate 70 via the O-ring 41, and the space between the pressure receiving plate 70 and the upper lid 40 (pressure medium passage 7
At the same time, the axial force applied to the pressure vessel 1 is maintained by the press frame 50. When processing of the high-pressure treated raw material is completed, the pressure medium inside the pressure vessel 1a is discharged from the pressure medium passage 42 of the upper lid 40 to the outside via the pressure medium passage 72, and the pressure medium inside 1a becomes normal pressure. Furthermore, when the pressure inside the pressure vessel 1a reaches normal pressure, there is no force to lift the upper lid 40, so the upper lid 40
0 is lowered by the upper lid lifting/lowering drive device 80 so as to bring it into close contact with the upper surface of the pressure vessel 1. In this state, a sufficient gap is created between the pressure vessel 1 and the press frame 50, so the pressure vessel 1 is moved to the outside of the press frame 50 by the fluid pressure cylinder 66.

(Effects of the Invention) The press frame type hydrostatic pressurizing device of the present invention is configured as described above, and the initial seal against the pressure medium between the upper side of the press frame and the upper lid drives the upper lid to move up and down. It is raised by a device and brought into close contact with the upper side of the press frame through a sealing member, and sealing during pressurization is performed by the difference between the upper and lower pressure receiving areas of the upper lid (lower pressure receiving area > upper pressure receiving area), Since it is a self-tight seal, the special pressure medium supply device shown in FIGS. 4, 5, and 6 can be dispensed with, and the manufacturing cost of the device can be greatly reduced. In addition, the sealing member that seals around the communication part between the pressure medium passage on the press frame side and the pressure medium passage on the upper lid side may be a flat seal.
The assembly precision required of the device for centering can be greatly reduced. Further, as mentioned above, a special pressure medium supply device is not required and the device is compact, and even if the yoke frame of the press frame is a laminated steel plate type, there is an effect that the mounting space for the pressure medium supply device can be secured.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the press frame type hydrostatic pressurizing device according to the present invention, Fig. 2 is a cross-sectional view taken along the arrow line in Fig. 1, and Fig. 3 shows that the upper lid is completely An explanatory diagram showing a sealed state, FIG. 4 is a side view showing a conventional press frame type hydrostatic pressurizing device, FIG. 5 is a sectional view taken along the arrow line in FIG. 4, and FIG. FIG. 5 is an enlarged cross-sectional view of the portion shown by the arrows in FIG. 5; DESCRIPTION OF SYMBOLS 1... Pressure vessel, 40... Upper lid, 41... Seal member, 42, 71... Pressure medium passage, 50...
...Press frame, 80...Top lid lifting/lowering drive device.

Claims (1)

[Claims] 1 A press that pressurizes the inside of the pressure vessel by supplying pressure medium into the pressure vessel through a pressure medium passage provided in the press frame and the upper lid of the pressure vessel when the pressure vessel is inserted into the press frame. In the frame-type hydrostatic pressurizing device, the upper lid is supported so as to be movable up and down by an upper lid lifting drive device attached to the pressure vessel, and the press frame side pressure medium passage and the upper lid side pressure medium passage communicate with each other. A press frame type hydrostatic pressurizing device, characterized in that a sealing member for sealing around a communication portion is provided on at least one of the upper lid and the press frame.