KR200226912Y1 - Device for preventing over-compression in compressor - Google Patents

Abstract

The present invention relates to a device for preventing overcompression of a compressor, the technical configuration of which is provided with a cylinder having an air inlet, a piston is installed inside the piston, and inserted into the inside of the tong moving piece via a return spring at the bottom of the piston. The upper body is connected to the operating shaft, the stopper is installed on the inner side of the forceps operation piece,

The tongs conveying hole is integrally formed at the lower part of the air induction line, and the tongs are connected to the end of the operation shaft inserted into the tongs operating piece, and the tongs are fixed to one side of the tongs operating piece so that the tongs are connected to one side. Tongs driving unit,

A fork body having an unloader fork and a locking jaw is connected to an end of the forceps operation piece via an operating spring, and is installed through a valve plate at a bottom of the top cover and a top cover having a through hole formed at a lower side of the fork body. The bottom cover is fixed as a fixing bolt, and the bottom cover is to include a plate opening and closing portion is installed on the plate return spring is to be configured.

Description

Device for preventing over-compression in compressor

The present invention relates to an overcompression preventing device of a compressor. In particular, it is an air intake device widely used in the intake device of a reciprocating compressor, and supplies a gas into a reciprocating compressor to prevent the piston inside the compressor from moving forward and backward. It is characterized by producing a high pressure fluid by repeating.

Looking at the unloading state of a conventional compressor intake apparatus, which is generally known, as shown in FIGS. 1 to 3, the inside of the compressor generates a vacuum pressure at the moment when the piston A of the compressor moves backwards, and this vacuum The suction process is carried out by a force that tries to keep the pressure the same as the pressure in the atmosphere.

Due to the force, the plate return spring 190 installed on the intake apparatus of the upper part of the suction process is pushed backward, and a gap is formed between the upper cover 240 and the valve plate 180, and the fluid as much as the internal volume of the compressor passes through the gap. It is an inflow.

Subsequently, when the piston A of the compressor is moved forward, the pressure of the fluid inside the compressor increases and at the same time, the pressure starts to rise, and the pressure is increased in the compressor under the discharge process by the compression and discharge process. It is discharged to the outside of the compressor through the exhaust system shown.

On the other hand, in the intake system, the valve plate 180 is closed by the stress of the plate return spring 190 and the pressure inside the compressor, and the high pressure fluid is obtained by repeating the process.

In the operating state of the intake system, when the air for measuring instrument and device control is blocked by the electromagnetic three-way valve 100, and the air in the device is discharged to the atmosphere, the unloader piston is relieved by the stress of the unloader piston return spring 105. (103) and the unloader fork bundle 140 is upward, at this time the valve plate 180 of the intake system by the pressure change in the compressor by the forward and backward of the piston (A) in the compressor inside the upper cover ( It is moved between the 240 and the lower cover 250.

In addition, the fluid introduced into the gas tool 200 of the upper cover 240 by the above operation is to repeatedly supply and shut off the fluid into the compressor.

On the other hand, in the compressor unloaded state, when the electromagnetic three-way valve 100 is operated to supply the measuring instrument and the air for controlling the device to the intake system, the unloader piston 103 is lowered, and the unloader fork bundle 140 is also accompanied by this force. In this case, the unloader fork 150 attached to the unloader fork bundle 140 moves and pushes the valve plate 180 back through the unloader fork guideway 230.

By this action, the stress of the unloader piston return spring 105 and the plate return spring 190 is overcome, and the gap between the upper cover 240 and the valve plate 180 is opened, and the fluid moves freely through the gap. .

In addition, when the compressor piston (A) retreats, fluid is introduced, but when the compressor piston (A) moves forward, the fluid is compressed and is not discharged through the exhaust system, but is discharged again through the intake system so that the pressure does not rise. The abnormal situation is referred to as a compressor unloaded state, and air is supplied to the intake system by the electric signal of the valve, or blocked to perform loading and unloading.

However, such an unloading state requires the unloading situation in which the test operation of the facility or the unloading signal of the valve by the electric signal is continued so that the compressor does not produce a high pressure, or the unloading state of the solenoid valve is maintained. In some cases, the air is unexpectedly cut off due to a failure or blockage of the air pipe, and when such a situation occurs, the unloader piston 30 and the unloader fork (to maintain the unloading process by adjusting electric signals and air) 140 is pushed up by the tension of the unloader piston return spring 50, there is a disadvantage that the conversion directly to the rod process irrespective of the electrical signal to maintain the unload.

In addition, the reciprocating compressor began to produce high pressure while performing the suction, compression, and discharge process, and the pressure on the compressor outlet continued to rise sharply, leading to the release of safety valves and equipment and safety accidents. .

The present invention is to improve the various problems as described above, the purpose of the reciprocating compressor is to switch the rod when the air to maintain the unload is blocked, or the action of air is abnormally maintained due to pressure drop, etc. It is to provide a compressor overcompression prevention device to prevent the malfunction and safety accident of the equipment caused by the rapid rise of the pressure at the compressor outlet side by performing the suction, compression, discharge process.

1 is a cross-sectional structural view showing a conventional compressor intake apparatus

Figure 2a, b is a state diagram of the intake and exhaust operation of the conventional reciprocating compressor

3 is an exploded view of main parts of a conventional intake apparatus;

Figure 4 is a schematic diagram showing an overcompression preventing device according to the present invention

Figure 5a, b is a schematic diagram showing the operating state at the time of loading and unloading the overcompression prevention device according to the present invention

Figure 6 is an exploded state diagram showing an overcompression preventing device according to the present invention

Explanation of symbols on the main parts of the drawings

1.Unloader air inlet 2 ... Air inlet for preventing overcompression

3..Unloader piston 5 ... piston return spring

9 ... Operating shaft 10 ... Stopper

14 ... Fork body 15 ... Unloader fork

18 ... valve plate 19 ... plate return spring

As a technical configuration for achieving the above object, the present invention, a cylinder having an air inlet is installed, a piston in which a plurality of slipper ring is mounted is installed inside, the bottom of the piston via a return spring of the forceps operation piece The upper body is connected to the operating shaft inserted into the inside, the stopper is installed on the inner side of the forceps operation piece,

An air induction path is formed to coincide with the air inlet of the upper body, a tongs conveying hole is formed at the bottom thereof, and a tong is connected as a link to an end of an operating shaft inserted into the tongs operating piece, and a pin support is provided on one side of the tongs operating piece. Is fixed to the forceps drive unit is connected to the forceps on one side,

A fork body having an unloader fork and a locking jaw is connected to an end of the forceps operation piece via an operating spring, and is installed through a valve plate at a bottom of the top cover and a top cover having a through hole formed at a lower side of the fork body. The lower cover is fixed as a fixing bolt, by providing an overcompression preventing device of the compressor comprising a plate opening and closing portion is installed on the lower cover plate return spring.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a schematic diagram showing an overcompression preventing device according to the present invention, Figures 5a, b is a schematic diagram showing an operating state at the time of loading and unloading the overcompression preventing device according to the present invention, Figure 6 As an exploded state diagram showing the overcompression prevention device according to the present invention, the present invention is configured as the upper body 30, the forceps drive unit 40 and the plate opening and closing part 50.

The upper body 30 is provided with a cylinder (3-1) having an unloader air inlet (1) to form an overcompression prevention air inlet (2) on the outer diameter side and a plurality of slippers (4) therein The piston (3) to be mounted is installed, the operating shaft (9) is connected to the bottom of the piston (3) via a return spring (5), and the operating shaft (9) of the forceps operating piece (27) It is installed to be inserted inward, the stopper 10 is installed on the inside of the forceps operation piece 27, the pin base 17 is fixed to the forceps operation piece (27).

The tongs driving part 40 connected to the upper body 30 as the fixing bolt 6 has an air induction path 40-1 formed at the top thereof to coincide with the air inlet 2, and at the bottom thereof, the tongs conveying hole. (40-2) is connected, to the end of the operating shaft (9) inserted into the forceps operation piece 27, the forceps 13 are connected as a link (13-1) pin support stand 17 on one side thereof Is connected to.

Plate opening and closing portion 50 is installed on the lower side of the forceps driving unit 40, the unloader fork 15 is connected to the end of the forceps operation piece 27 via an over-compression preventing spring 16 at the upper end. A fork body 14 having a locking jaw 14-1 is connected to the upper cover 24 and the upper cover 24 to which the through hole 23 is formed to allow air to enter and exit while the fork 15 is inserted. The bottom cover 25, which is installed at the bottom of the valve plate 18 via the valve plate 18, is fixed as the fixing bolt 21, and the plate return spring 19 is in close contact with the valve plate 18. This consists of the configuration being installed.

Reference numerals 1-1 and 1-2 denote solenoid valves and speed regulators.

Referring to the operation of the present invention made of such a configuration as follows.

As shown in Figs. 4 to 6, first, when the electromagnetic three-way valve 1-1 is opened in order to switch the reciprocating compressor from the loaded state to the unloaded state, the air (1 kg / cm 2 or less) decompressed in the pressure reducer It passes through the air inlet (1) via 1-2).

When the air flows in, the unloader piston 3 retreats backward and pushes the operating shaft 9 downward so that the operating shaft 9 is pushed downward by the operating shaft 9 and the pin support 17. The tongs 13 are connected to the left and right.

In addition, as the tongs 13 are opened, the unloader fork 15 formed on the unloader fork body 14 is pushed down by the moving distance of the unloader piston 3, and the unloader fork 15 Pushes the valve plate 18 so that the valve plate 18 contacts the lower cover 25, the overcompression spring 16 contracts to prevent damage to the valve plate 18 and the unloader fork 15. While buffering.

At this time, the gas flowing into the gas inlet 20 is free to move between the gap between the valve plate 18 and the upper cover 24, the reciprocating compressor piston (A) as shown in FIG. Even if repeated, the fluid is compressed and is not released to the exhaust system, but remains unloaded to repeat the in and out of the intake system.

On the contrary, when the electromagnetic three-way valve 1-1 is closed in order to switch the rod from the unloaded state to the load, the unload piston return spring 5 expands and pushes the unloader piston 3 upwards, and the unloader piston The air flowing into the induction furnace 26 is prevented from leaking to another place by the slipper ring 4, and after passing through the air inlet 1, the air flows through the electronic three-way valve through the speed regulator 1-2. Is slowly discharged.

In addition, when the unloader piston 3 moves upward, the operating shaft 9 is also raised together, and the tongs 11 are caught by the stopper 10 and are retracted to catch the unloader fork body 14. Hold the jaw 14-1.

On the other hand, if the operating shaft (9) is caught by the stopper 10 and can not be raised any more, the operating shaft (9) lifts the fork body (14), and the valve plate (18) by the expansion of the valve plate return spring It will be in close contact with the upper cover 24.

At this time, as shown in FIG. 2, the reciprocating compressor piston A retreats, and the inside of the compressor achieves a vacuum pressure, and the valve plate 18 of the intake system overcomes the stress of the plate return spring 19 by the vacuum pressure. While opening to make a gap with the upper cover 24, the fluid flows into the compressor.

Then, when the reciprocating compressor piston A moves forward, the pressure of the fluid inside the compressor rises to push the valve plate 18 back to maintain a rod state that discharges the high pressure fluid.

In addition, the air pressure is reduced (1 kg / ㎠ or less) in a separate air pressure reducer not shown in the present invention as the core of the present invention, and through the speed regulator (1-2) to the unloader air inlet (1) When the air is cut off suddenly while the reciprocating compressor is in the unloaded state by supplying, and the pressure in the air pipe begins to drop, the air is slowly released backward by the speed regulator 1-2 so that the unloader air inlet 1 The air pressure drop at will slow down.

That is, the unloader piston 3 slowly pushes back slowly, and slowly adjusts the speed at which the tongs 13 are retracted as a whole.

Then, the pressure drop in the overcompression prevention device fixing air inlet (2) proceeds faster than the unloader air inlet (1), while the pressure inside the overcompression prevention device fixing air inlet drops, the unloader piston (3) Before this retraction, the over-elastic spring compression prevention spring 16 pushes the forceps operating piece 27 back so that the unloader piston return spring 5 contracts.

At this time, when the overcompression prevention slipper ring (8) is pushed upward to finish the back to the position where the tongs (13) can not grasp the unloader fork body 14 by the air pressure drop in the unloader air inlet (1) Unloader piston (3) is slowly pushed upwards, and together with the operating shaft (9) ascends with the link (13-1) is caught on the upper stopper (10) located in the upper locking jaw ( 14-1) is not caught by the tongs 13.

In addition, the spring 16 continues to push the fork body 14, the valve plate 18 is in the shape of being in contact with the lower cover 25, even if the air for controlling the operation of the intake system operation is blocked by the above operation Reciprocating compressors can continue unloading.

As described above, according to the apparatus for preventing overcompression of a compressor according to the present invention, the compressor finishes a predetermined pressure production, maintains unloading, and performs a trial run while maintaining a reciprocating compressor unload. Even if the operation control air is cut off in a situation where the unloading is to be continued, the compressor has an excellent effect, such as preventing accidents and disasters caused by the compressor malfunctioning and continuing to overcompress.

Claims (1)

A cylinder 3-1 having an air inlet 1 is provided so that the air inlet 2 is formed on the outer diameter side thereof, and a piston 3 is installed therein, and a return spring 5 at the bottom of the piston 3. An operating shaft 9 inserted into the forceps operating piece 27 is connected to the upper body 30 to which the stopper 10 and the pin rest 17 are fixed to the forceps operating piece 27, It is connected to the upper body 30 as a fixing bolt (6) is connected to the air flow path (40-1) and tongs conveying hole (40-2) is installed on the inner diameter side, the link to the end of the operating shaft (9) A tongs driving part 40 to which the tongs 13 are connected to one side of the pin support 17 as 13-1, The fork body 14 having the locking jaw 14-1 at the top is connected to the lower unloader fork 15 through the operation spring 16 at the end of the forceps operation piece 27, and the fork The lower cover 25 is inserted into the plate return spring 19 via the valve plate 18 at the lower side of the upper cover 24 through which the through holes 23 are formed while the air is inserted. Over-compression preventing device of the compressor, characterized in that it comprises a plate opening and closing portion 50 is fixed as a fixing bolt 21