KR200471166Y1

KR200471166Y1 - Piston ring guide tool

Info

Publication number: KR200471166Y1
Application number: KR2020120012014U
Authority: KR
Inventors: 김수겸; 진중민; 권규덕; 이상재
Original assignee: 주식회사 한국가스기술공사
Priority date: 2012-12-20
Filing date: 2012-12-20
Publication date: 2014-02-05

Abstract

The present invention relates to a piston ring guide device that allows the piston to be coupled to the cylinder while preventing the piston ring from being broken when the piston is coupled to the cylinder.
The guide device is a holding plate (50) having a guide pin (52), a holding plate (60) guided by the guide pin (52) and a gripping hole (70) for holding the piston ring (40) concentrically with the piston (30). By providing the guide pin 52, the piston 30 and the piston ring 40 can be smoothly entered without interfering with the front end of the cylinder 10 concentric with the cylinder 10, It is possible to prevent damage to the piston ring 40 due to contact with the end of the cylinder 10 during assembly.

Description

Piston ring guide tool {Piston ring guide tool}

The present invention relates to a piston ring guide device, and more particularly, to a piston ring guide device that allows the piston to be coupled to the cylinder while preventing the piston ring from being broken when the piston is coupled to the cylinder.

For example, liquefied natural gas, that is, LNG (Liquefied Natural Gas), is a natural gas (NG: natural gas) mainly composed of methane and cooled to an ultra low temperature of minus 162 ° C. to reduce its volume to about 1/600.

Since the liquefaction temperature of the natural gas is a very low temperature state, the external heat is transferred to the LNG even if the LNG is insulated, and thus the LNG is continuously vaporized to generate boil-off gas (BOG).

This boil-off gas (BOG) is compressed through a compressor and condensed in the condenser to re-liquefy to use.

On the other hand, after a certain period of time, the compressor needs maintenance work such as removing the piston from the cylinder and replacing the piston ring.

1 to 3, a plurality of bolts 11 are provided at the tip of the cylinder 10 so that the cover 20 can be coupled, and the piston 30 is reciprocated with the rod 31. have.

In addition, the piston ring 40 is coupled to the piston 30 to be sealed and lubricated.

On the other hand, when the piston ring 40 formed of carbon after the maintenance of the cylinder is coupled to the cylinder 10 in a state of being eccentrically coupled to the piston 30 by play, etc., the piston ring 40 is in contact shock with the cylinder 10. There was a problem that is broken.

An object of the present invention is to provide a piston ring guide device that can prevent damage to the piston ring when the piston is coupled to the cylinder to solve the above problems.

The present invention to achieve the above object is in the piston ring guide device for guiding the piston ring when the piston is coupled to the piston ring coupled to the cylinder is formed with a plurality of bolts are coupled to the end,

Engagement holes are formed to be coupled to each of the bolts and a plurality of guide pins are formed on the upper surface of the annular fixing plate fixed to the end of the cylinder by a nut coupled to the bolt,

An annular moving plate having a plurality of guide holes slidably coupled to the guide pins;

It is provided coupled to the moving plate and having a plurality of holding holes for holding the piston ring so that the piston ring and the piston is concentric,

The moving plate is guided to the guide pin in a state in which the piston ring is gripped by the gripper, so that the piston is coupled to the cylinder.

The gripper may include a body fixed to the moving plate, a moving shaft coupled to the body to be movable toward the center of the moving plate, and a grip block fixed to an end of the moving shaft to hold the piston ring. And a lever for moving the movable shaft with respect to the body.

The present invention guide device is a holding plate (50) having a guide pin (52), the holding plate (60) guided by the guide pin (52) and a gripping hole (70) for holding the piston ring (40) concentrically with the piston (30). By providing a guide pin 52, the piston 30 and the piston ring 40 can be smoothly entered without interfering with the front end of the cylinder 10 concentrically with the cylinder 10. To prevent damage to the piston ring 40 due to contact with the end of the cylinder 10 during assembly.

1 is a sectional view of the main portion showing a conventional cylinder,
2 is a schematic diagram illustrating an assembled state of a piston;
3 is a perspective view showing a piston ring,
4 is a schematic view showing a cylinder employing a guide device of the present invention embodiment,
5 is a schematic separation of the present invention guide device,
6 is a perspective view showing a fixed plate and a moving plate,
7 is a schematic view showing a gripper for holding a piston ring;
8 is a schematic view illustrating an assembled state of a piston.

The piston ring guide device of the present invention allows the piston to be coupled to the cylinder while preventing the piston ring from being broken when the piston is coupled to the cylinder.

4 and 5, the end of the cylinder 10 is formed with a plurality of bolts 11 to which a cover (not shown; see FIG. 1) is coupled, and reciprocally coupled to the cylinder 10. The piston ring 40 is coupled to the piston 30.

5 to 7, the guide device according to the embodiment of the present invention has a coupling hole 51 coupled to each of the bolts 11, and a plurality of guide pins 52 are formed on an upper surface thereof. Annular plate (50) is fixed to the end of the cylinder (10) by a nut (12) coupled to the ring and a plurality of guide holes (61) slidably coupled to the guide pin (52) A plurality of grippers 70 are provided to be coupled to the moving plate 60 and the moving plate 60 to hold the piston ring 40 so that the piston ring 40 and the piston 30 are concentric. It is provided.

In the guide device as described above, the movable plate 60 is guided to the guide pin 52 in a state where the piston ring 40 is gripped by the gripper 70, so that the piston 30 is connected to the cylinder 10. ) Will be combined.

On the other hand, the gripper 70 is the body 71 which is fixed to the moving plate 60 and the moving shaft 72 is movably coupled to the center of the moving plate 60 to the body 71 ), A holding block 73 fixed to an end of the moving shaft 72 to grip the piston ring 40, and a lever 74 to move the moving shaft 72 with respect to the body 71. It is provided.

When the gripper 70 reciprocates the lever 74, the movement shaft 72 moves toward the center of the piston 30. At this time, the grip shaft 70 moves in one direction by a conventional latch structure of the movement shaft 72. By moving the button 75, the locking of the latch is released in one direction so that it can be moved in the opposite direction.

The guide device of the above configuration is installed and operated as follows.

First, as shown in FIG. 8, the end of the piston 30 is initially entered into the cylinder 10 by using the winch wire 80, the fixing plate 50 is coupled to the bolt 11, and the cylinder (as a nut 12). 10) to the end.

Subsequently, the wire 80 is separated, and the guide hole 61 of the movable plate 60 is coupled to the guide pin 52. Then, the grip hole 70 is operated as shown in FIG. 7 to form a piston ring ( 40 is gripped to be concentric with piston 30.

When the piston 30 is pushed to the cylinder 10 in the above state, the moving plate 60 is moved to the cylinder 10 side while being guided to the guide pin 52, wherein the guide of the guide pin 52 By doing so, the piston 30 and the piston ring 40 can enter the cylinder 10 concentrically.

Therefore, when the piston ring 40 enters the cylinder 10, the piston ring 40 can be smoothly entered without interfering with the front end of the cylinder 10, thereby preventing damage caused by contact with the end of the cylinder 10 during assembly. do.

10.Cylinder 11 ... Bolt
30 ... piston 40 ... piston ring
50 ...
60 ... traveling board 70 ...

Claims

In the piston ring guide device for guiding the piston ring when engaging the piston with the piston ring coupled to the cylinder formed with a plurality of bolts to which the cover is coupled to the end,
Coupling holes 51 are formed to be coupled to each of the bolts 11, and a plurality of guide pins 52 are formed on the upper surface thereof, and the cylinders 10 are connected to each other by the nuts 12 coupled to the bolts 11. Annular fixed plate 50 fixed to the end,
An annular moving plate 60 having a plurality of guide holes 61 slidably coupled to the guide pins 52,
It is provided with a plurality of holding holes 70 coupled to the moving plate 60 and holding the piston ring 40 so that the piston ring 40 and the piston 30 are concentric.
The moving plate 60 is guided to the guide pin 52 in a state where the piston ring 40 is gripped by the gripper 70 so that the piston 30 is coupled to the cylinder 10. Piston ring guide device characterized in that.

According to claim 1, wherein the gripper 70 is coupled to the body 71 is fixed to the movable plate 60, the body 71 is movably coupled toward the center of the movable plate 60 A moving shaft 72, a gripping block 73 fixed to an end of the moving shaft 72 to grip the piston ring 40, and the moving shaft 72 to move relative to the body 71. A piston ring guide device, characterized in that provided with a lever (74).