JPH1162831A - Boosting supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a plunger piston and a connecting rod by a simple constitution and facilitate the manufacturing and maintenance inspection by performing the connection of the plunger piston and the connecting rod via magnetic force and using the connection as at least one of reciprocating compressing parts. SOLUTION: In a boosting supply device 50, a plunger piston 2 and a permanent magnet 9 are capable of coming into contact with each other by center parts each other of opposed surfaces at an arbitrary angle. The plunger piston 2 penetrated into a cylinder 1 by a connecting rod 3 freely bends in the extending direction of the cylinder 1 by defining the contact part with the permanent magnet 9 as a starting point. Thus, sliding resistance is reduced up to the same level as that of a free piston because the piston 2 smoothly advances into the inside face of the cylinder 1, imparting uniform force. Therefore, the plunger piston 2 and the connecting rod 3 connected via the permanent magnet 9 do not separate, even if the connecting rod 3 receives force from a crank and performs a reciprocating operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor and a pump for compressing a gas to obtain a high-pressure gas and for discharging a liquid at a high pressure.

[0002]

2. Description of the Related Art As an apparatus of this type, for example, as shown in FIG. 3, an elongated cylindrical plunger piston 2 is inserted into a cylinder 1 from one end thereof so as to advance and retreat, and this plunger piston 2 is not shown. When the connecting rod 3 that reciprocates under the force of the crank pushes the cylinder 1 into the cylinder 1, the suction valve 4 opens to compress the gas in the compression chamber 6 that has been sucked, and the pressurized gas is discharged to the discharge valve 5.
When the connecting rod 3 receives the force from the crank and retreats, and the force from the connecting rod 3 stops acting on the plunger piston 2, the suction valve 4 opens, and the pressure of the gas flowing from the opening causes the suction valve 4 to open. A free-piston type booster supply device 50 that operates in a direction in which a plunger piston 2 is pushed out of a cylinder 1 is known.

Reference numeral 7 denotes a guide ring made of ethylene tetrafluoride or the like mounted on the outer peripheral surface of the connecting rod 3, and reference numeral 8 denotes a cylinder made of aluminum, steel, or the like containing the cylinder 1, the plunger piston 2, the connecting rod 3, and the like. It is a guide.

[0004] The booster supply device 50 having this configuration has a feature that the configuration is simple. However, due to the relationship between the internal pressure of the compression chamber 6 and the stop angle of the crank for reciprocating the connecting rod 3, the plunger piston is driven. The connecting rod 2 may be separated from the connecting rod 3.

When the apparatus is started in this state, there is a danger that the connecting rod 3 collides with the plunger piston 2 during the compression stroke, causing a violent noise or damaging the members.

Further, even when the plunger piston 2 and the connecting rod 3 are stopped in contact with each other, when the starting operation starts from the retreat of the connecting rod 3, the plunger piston 2 and the connecting rod 3 are once separated from each other and then subjected to a compression stroke. Colliding with each other, causing the aforementioned problems such as noise.

Further, when compressing gas, there is a concern that resonance occurs due to the spring effect of the compressed gas, generating noise and damaging the cylinder 1, the plunger piston 2, and the like.

On the other hand, a device in which the plunger piston 2 and the connecting rod 3 are connected via a bearing member 10 as shown in FIG. 4 so that no side pressure acts on the plunger piston 2 is disclosed in, for example, US Pat. No. 5,033,940. Proposed.

According to this configuration, since there is no collision between the plunger piston 2 and the connecting rod 3, a strong collision sound is generated, parts are easily damaged, and resonance occurs in the case of gas compression. The problem that has been a problem with the free-piston type booster has been solved. However, due to the complicated structure, not only the number of parts increases, the price increases, but also the durability decreases. There was also.

[0010]

Therefore, it is necessary to connect the plunger piston and the connecting rod with a simple structure, to facilitate manufacture and maintenance and to prevent breakage.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and comprises a cylinder, a plunger piston inserted in the cylinder,
In a pressurized supply device formed with a connecting rod connected to the plunger piston and reciprocatingly driving the plunger piston, a pressurized supply device configured to connect the plunger piston and the connecting rod via magnetic force,

In a pressurized supply device for pressurizing a required fluid in multiple stages by interlocking a plurality of reciprocating compression units, a multistage pressurized supply device having the above-described configuration for at least one of the reciprocating compression units. By solving the problems of the prior art described above.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In these figures, the same reference numerals are given to the parts having the same functions as those described in FIGS. 3 and 4 for easy understanding.

In FIG. 1, reference numeral 9 denotes a disk-shaped permanent magnet fixed to a flat end of the connecting rod 3 by a screw or the like. The plunger piston 2 is entirely made of a magnetic material, for example, superalloy steel, iron-based tool material, or high-speed steel, and one end of the plunger piston 2 that always projects from the cylinder 1 is formed into a rounded convex surface. Have been.

Therefore, the plunger piston 2 and the permanent magnet 9 can come into contact with each other at an arbitrary angle between the center portions of the opposing surfaces, and the plunger piston 2 pushed into the cylinder 1 by the connecting rod 3 1 is freely bent in the extending direction from the contact portion with the permanent magnet 9 and enters the cylinder 1 smoothly while exerting a uniform force on the inner surface of the cylinder 1. Therefore, the sliding resistance is reduced to the same level as the free piston. Is done.

The magnetic force of the permanent magnet 9 is
The plunger piston 2 does not separate even when it reciprocates, that is, the strength is greater than the inertia of the plunger piston 2 and the sliding resistance of the cylinder 1.

On the other hand, the cylindrical guide 8 containing the cylinder 1, the plunger piston 2, the connecting rod 3 and the like is made of a non-magnetic material such as aluminum.

Therefore, the booster 5 according to the present invention
At 0, even if the connecting rod 3 receives a force from the crank and reciprocates, the connecting rod 3 and the plunger piston 2 connected via the permanent magnet 9 are not separated.

Therefore, regardless of the stop angle of the crank,
Also, when the connecting rod 3 is started in the retreating direction, the plunger piston 2 and the connecting rod 3 do not separate from each other, so that no collision sound is generated at the time of starting.

FIG. 2 shows four reciprocating compression units 101 and 100 disclosed in, for example, Japanese Patent Application Laid-Open No. 7-139462.
102, 103 and 104 are arranged so as to reciprocate on orthogonal shafts 105 and 106. For example, when a low-pressure natural gas of about 0.2 to 0.3 MPa is supplied from a city gas pipe or the like, a reciprocating compression unit is provided. 1 shows a cross-section of a multi-stage pressurizing supply device 100 that sequentially increases the pressure from 101. For example, the final stage reciprocating compression unit 104 that pressurizes and discharges to about 20 MPa is configured by the pressurizing supply device 50. is there. In the drawings, reference numeral 107 denotes a crank chamber, and 108 denotes a crank shaft.

In the multi-stage pressurizing and supplying apparatus 100 having this structure, the final reciprocating compression section for obtaining the highest pressure is constituted by the pressurizing and supplying apparatus 50 having the above-mentioned simple mechanism, so that manufacture and maintenance and inspection can be easily performed. Not only that, it was harder to break and durability was improved.

Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the present invention.

For example, when the plunger piston 2 is made of a non-magnetic material such as aluminum, the connecting rod 3
A magnetic material such as iron is attached to the end of the plunger piston 2 facing the permanent magnet 9 fixed to the magnet by screwing or the like.

Further, the permanent magnet 9 is attached to the end of the plunger piston 2, and a magnetic material is arranged on a portion of the connecting rod 3 facing the plunger piston 2, or the connecting rod 3 itself is formed of a magnetic material.

The surface of the permanent magnet 9 is also formed as a rounded convex surface. Alternatively, only the surface of the permanent magnet 9 is formed as a rounded convex surface.

It is also possible to provide an electromagnet instead of the permanent magnet 9.

[0027]

As described above, according to the present invention, the plunger piston and the connecting rod are connected via magnetic force. Therefore, even when the connecting rod is stopped or when the connecting rod is started in the retreating direction. Also, since the plunger piston and the connecting rod do not separate, they do not collide. Therefore, noise can be reduced, and the durability of the member is improved.

Further, since the mechanism is simple, not only the manufacturing is easy, but also the maintenance and inspection can be easily performed, and the device exhibits excellent durability as a high-pressure specification device.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a boosting supply device according to the present invention.

FIG. 2 is an explanatory diagram of a multi-stage boost supply device according to the present invention.

FIG. 3 is an explanatory diagram of a conventional technique.

FIG. 4 is an explanatory diagram of another conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder 2 Plunger piston 3 Connecting rod 4 Suction valve 5 Discharge valve 6 Compression chamber 7 Guide ring 8 Cylindrical guide 9 Permanent magnet 50 Booster supply unit 100 Multistage booster supply unit 101 Reciprocating compression unit 102 Reciprocating compression unit 103 Reciprocating compression unit 104 Reciprocation Compression section 105 shaft 106 shaft 107 crankcase 108 crankshaft

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI // F04B 9/04 F04B 35/00 103

Claims (2)

[Claims] 1. A step-up supply device comprising a cylinder, a plunger piston inserted into the cylinder, and a connecting rod connected to the plunger piston to reciprocate the plunger piston. A step-up supply device characterized in that the connection with the connecting rod is made through magnetic force. 2. A pressurized supply device for pressurizing a required fluid in multiple stages by interlocking a plurality of reciprocating compression units, wherein the pressurized supply device according to claim 1 is used for at least one of the reciprocating compression units. Features a multi-stage booster.