JPS61261683A - Superhigh pressure gas compressor - Google Patents

Abstract

PURPOSE:To facilitate maintenance work in a compressor and improve its safety, by connecting cooling cylinders respectively with both ends of a low pressure cylinder through connecting link structures by bolt means placed along the axial direction of the cylinder while engaging high pressure cylinders with the cooling cylinders in the axial direction. CONSTITUTION:A compressor, having flanges in both ends respectively of cooling cylinders 7, 8, mechanically connects each one of the flanges with connecting link structures 3, 4 by bolt means 22, 23. And the compressor, placing the cooling cylinders 7, 8 on the common axial center with a low pressure cylinder 2 and fitting high pressure cylinders 5, 6 to be inserted into these cylinders 7, 8, has cooling passages 18, 19 of cooling water or the like in the periphery of the high pressure cylinders 5, 6. The compressor, generating stress in accordance with compression of gas only acting in the peripheral and radial direction for the high pressure cylinders 5, 6, holds stress in the axial direction to be loaded by the bolt means 20-23.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a relatively small gas compressor that generates 1000 to 2000 kgf/- and is used in hot isostatic pressing (HIP) and the like.

(Prior art) For supplying pressure medium to hot isostatic pressurizing equipment,
A compressor with a capacity of 000 kg f/=* is used, and a high-pressure cylinder is installed at both ends of a low-pressure cylinder containing a working piston, and the high-pressure cylinders alternately compress gas by the reciprocating movement of the working piston. There are things that can be supplied.

(Problems to be Solved by the Invention) In the gas compressor according to the prior art described above, stress acts on each of the high-pressure cylinders not only in the circumferential direction and radial direction but also in the axial direction. Not only was the distribution complicated and there were safety issues, but maintenance was also extremely difficult.

The purpose of the present invention is to provide an ultra-high pressure gas compressor that improves safety and facilitates maintenance by eliminating the axial stress that has hitherto been applied to the high-pressure cylinder. shall be.

(Means for Solving the Problems) The technical means taken by the present invention to achieve the above-mentioned objects are characterized by: Working pressure boat 13.1
A connecting frame 3.4 having a connecting frame 3.4 is installed, and cooling cylinders 7.8 are connected to each other coaxially with the low-pressure cylinder 2 via the connecting frame 3.4. 7.8 refrigerant passages 18.
A high-pressure cylinder 5.6 is inserted through the high-pressure cylinder 5.6, and each of the seal pistons 11.12 provided on the piston rod protruding from the working piston 1 is slidably inserted into the high-pressure cylinder 5.6. , each gas passage 15
．． Each of the end flanges 9.10 with 16 is an ultra-high pressure gas compressor mounted on the outer end of the cooling cylinder 7.8, and the cooling cylinder 2 is connected to both ends of the low pressure cylinder 2 via a connecting structure 3.4. Each of the cylinders 7.8 is connected by bolt means 22.23 extending along the cylinder axis, and each of the end flanges 9.10 attached to the outer end of the cooling cylinder 7.8 extends along the cylinder direction. bolt means 20.
21, in that each of the high-pressure cylinders 5.6 is axially engaged with a cooling cylinder 7.8.

(Function) Controls working pressure medium (hydraulic, water pressure, pneumatic), etc.) 13.14
The working piston 1 is reciprocated within the low-pressure cylinder 2 by alternately feeding liquid from the low-pressure cylinder 2.

Due to this reciprocating movement, the gas introduced into the pressure chamber of the high-pressure cylinder 5.6 through the gas passage 15.16 is alternately compressed by the sealing piston 11.12 and then
．． 16 to outside the system (outside the machine).

The heat generated when compressing the gas is cooled via the refrigerant introduced into the refrigerant passages 18,19.

The axial force generated during pressurization is absorbed by the mechanically connected end flanges 9.10, the cooling cylinder 7.8, the connecting frame 3.4,
It is supported by a low pressure cylinder 2.

(Example) Embodiments of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes an operating piston, which is tightly fitted into a pressurizing chamber 17 of a low-pressure cylinder 2 having cylinders at both ends so as to be slidable back and forth.

3.4 is a connecting frame, each having boats 13.14 for sending and discharging working pressure medium, and bolt means 22.23 extending along the cylinder axial direction on both end flanges of the low pressure cylinder 2. Mechanically coupled.

The boats 13 and 14 are each communicated with the pressurizing chamber 17, and the pistons 1 in the pressurizing chamber 17 are made to alternately reciprocate with the pressure medium supplied therefrom.

5.6 is a high-pressure cylinder, which is connected to a cooling cylinder 7.8 connected to the communication frames 3 and 4 by bolt means 22.23 extending along the cylinder axis direction through axial engaging portions 26.27, respectively. A seal piston 11.12 is fitted into each of the high-pressure cylinders 5.6 so as to be able to operate in the IR direction.

The sealing pistons 11, 12 are each mounted at the end of a rond extending from the working piston l.

That is, the cooling cylinders 7.8 each have flanges at both ends, one of each flange being connected to the connecting frame 3.4 by bolt means 22.23. Furthermore, the cylinder 7.8 is coaxial with the low-pressure cylinder 2, and the high-pressure cylinder 5.6 is inserted into these cylinders 7.8, and the outer periphery of the high-pressure cylinders 5, 6 is It has cooling passages 18 and 19 for cooling water and the like.

9.10 are end flanges, each having a gas passage 15.16 extending through its center, and a boss portion 9A on the inner diameter side.
, IOAs are each inserted into the high pressure cylinder 5.6 and mechanically connected to the outer end flange of the state cooling cylinder 7.8 by bolt means 20.21 which overlap and extend along the cylinder axis direction. .

Note that a plurality of bolt means 20.21 and 22.23 are arranged in the circumferential direction, and the bolt means 22.
．． Each of 23 may connect the connecting frame 3.4 and the low pressure cylinder 2, and the connecting frame 3.4 and the cooling cylinder 7.8 individually, or may connect them in one piece. .

In addition, in the figure, 24 and 25 indicate seals and bearings.

Therefore, in the illustrated example, the piston 1 is reciprocated within the cylinder 2 by alternately sending and discharging working pressure medium from the boats 13 and 14, and gas is sucked into the high-pressure cylinder 5 from one passage 15. , the gas being inhaled from the other passage 16 is put under ultra-high pressure (1000kgf/cd~200kgf/cd~200kgf/cd
The fuel is compressed to 0 kgf/a) and sent to the necessary equipment, and this process is repeated alternately.

The heat of compression can be prevented from overheating by supplying or retaining refrigerant to the jacket or passages 18 and 19.

Furthermore, the stress associated with gas compression is only caused by stress in the circumferential direction and radial direction acting on the high pressure cylinder 5.6, and the axial stress is carried by the bolt means 20.21, 22.23, etc. No directional stress is applied to the high-pressure cylinder 5.6, so that the stress distribution is a two-dimensional simple stress.

Also, when replacing the seal piston 11.12, the end flanges 9, 10 can be removed by loosening the bolt means 20.21, and when replacing the working piston 1 and its gaskets, the bolt means 22.23 can be removed. This can be done by removing it, and there is no need for strict torque management.

(Effects of the Invention) According to the present invention, connecting frames 3 and 4 having working pressure medium bows 13 and 14 are attached to both ends of the low pressure cylinder 2 into which the working piston 1 is slidably inserted, and Cooling cylinders 7.8 are connected coaxially with the low pressure cylinder 2 via communication frames 3 and 4, and high pressure cylinders are connected to each of the cooling cylinders 7.8 via refrigerant passages 18.19. 5.6 is inserted and said working piston 1
Each of the sealing pistons 11.12, provided on a more protruding piston rod, is slidably inserted into said high-pressure cylinder 5.6, and each of the end flanges 9.10, each having a gas passage 15.16, is fitted into said high-pressure cylinder 5.6. This is an ultra-high pressure gas compressor attached to the outer end of the cooling cylinder 7.8, and each of the cooling cylinders 7.8 is connected to both ends of the low pressure cylinder 2 via a communication frame 3.4 along the cylinder axial direction. an end flange 9 attached to the outer end of the cooling cylinder 7.8, connected by bolt means 22.23,
．． 10 are connected by bolt means 20.21 extending along the cylinder direction, and each of the high pressure cylinders 5, 6 is engaged in the axial direction with respect to the cooling cylinder 7.8. There are advantages.

Since the pressure (stress) applied to the high pressure cylinder 5.6 is two-dimensional and no axial force is applied, safety can be greatly improved.

Moreover, internal maintenance can also be made easier.

Therefore, the ultra-high pressure gas compressor of the present invention can be of great benefit when used as a gas compressor for various types of equipment including HIP equipment.

[Brief explanation of the drawing]

The drawings are cross-sectional views showing embodiments of the present invention. 1... Working piston, 2... Low pressure cylinder, 3.4
...Connection frame, 5, 6...High pressure cylinder, 7, 8.
...Cylinder for cooling, 9.10...End flange, 11
12... Seal piston, 13.14... Pressure medium boat for operation, 15.16... Gas passage, 18.19...
- Cooling passage, 20, 21, 22. 23... Bolt means.

Claims (1)

[Scope of Claims] 1. Communication frames 3 and 4 having working pressure medium ports 13 and 14, respectively, are attached to both ends of the low-pressure cylinder 2 into which the working piston 1 is slidably inserted, and the communication frames 3
, 4, cooling cylinders 7 and 8 are connected coaxially with the low pressure cylinder 2, and high pressure cylinders 5 and 6 are connected to the cooling cylinders 7 and 8 via refrigerant passages 18 and 19, respectively. A seal piston 1 is provided on a piston rod that is inserted and protrudes from the working piston 1.
1 and 12 are slidably inserted into the high-pressure cylinders 5 and 6, respectively, and end flanges 9 and 10 having gas passages 15 and 16, respectively, are connected to the cooling cylinders 7 and 12 respectively.
The cooling cylinders 7 and 8 are attached to both ends of the low-pressure cylinder 2 via communication frames 3 and 4, and each of the cooling cylinders 7 and 8 has a bolt means 22 attached to the outer end of the cylinder 8. , 23, and each of the end flanges 9, 10 attached to the outer ends of the cooling cylinders 7, 8 has a bolt means 20 extending along the cylinder direction.
21, and each of the high pressure cylinders 5 and 6 is engaged with a cooling cylinder 7 and 8 in the axial direction.