KR100360671B1 - An air compressor with high pressure having a type of complex cycle - Google Patents

Abstract

The present invention relates to a compound cycle type high pressure air compressor, and more particularly, by combining a screw compressor and a reciprocating piston compressor to configure a complex cycle type multistage compressor, while significantly improving the compression efficiency and reducing the required power and low vibration, low noise It is intended to realize a significant reduction in weight and size.

In the present invention, a plurality of reciprocating compression pistons (7) are installed in multiple stages on a crank shaft (6) which is connected to the motor shaft (2) and rotates. A shaft connecting housing 3 is installed, and a crankcase 4 is installed at the front of the shaft connecting housing 3 to provide a crank chamber 5 therein, and an end portion of the crankcase 4 is provided. The crankshaft 6 is horizontally installed to protrude into the shaft connecting housing 3, and two reciprocating pistons 7 are installed on both sides of the crankcase 4 in the horizontal direction, and the shaft connecting housing ( 3) the end of the crankshaft (6) and the motor shaft (2) is connected via a flexible coupling (8), the end of the crankshaft (6) located inside the shaft connecting housing (3) A drive pulley 9 is built up, and an upper portion of the crankcase 4 has a suction filter 14 on the suction side. ), A screw compression chamber (10) is installed, and the screw compression chamber (10) is provided with a screw compressor (12) horizontally installed so that a pair of rotary screw rollers (11) mesh with each other. The distal end of the) is installed to protrude toward the shaft connecting housing (3) side is driven driven pulley (12a) and the belt (13) is wound around the drive pulley (9) and driven pulley (12a), 1 in the screw compression chamber Compressed by car, followed by four reciprocating pistons horizontally installed on the crankcase, can be compressed step by step to improve compression efficiency, reduce power requirements, realize low vibration and low noise, and significantly reduce weight and size.

Description

An air compressor with high pressure having a type of complex cycle

The present invention relates to a compound cycle type high pressure air compressor, and more specifically, by combining a screw compressor and a reciprocating piston compressor to configure a compound cycle type multi-stage compressor, significantly reducing the required power while greatly improving the compression efficiency of the high pressure air compressor. It is designed to make it suitable for Navy ships and submarines because it can realize low vibration, low noise and dramatically reduce the weight and size.

In general, air compressors to be installed in naval ships and submarines should be capable of high efficiency with low volume and weight due to the nature of the ships, and should be capable of low vibration and low noise. In order to satisfy this problem, a multistage high pressure air compressor using a plurality of reciprocating pistons is used.

In the conventional multistage high pressure air compressor, four reciprocating pistons are typically installed on the crankshaft in a V-shape or X-shape to compress the air at high pressure while the four reciprocating pistons reciprocate as the crankshaft rotates. The reciprocating piston compressor has four reciprocating pistons compressing air in multiple stages, thereby compressing the air at high pressure.

However, this is because the piston size is large in the low pressure stage of the reciprocating piston compressor and the piston size in the high pressure stage is significantly smaller (cross section ratio of 64: 1), so that the weight of the piston in the low pressure stage and the piston in the high pressure stage are different. There is a big problem that the vibration is greatly increased by generating a large vibration force, the noise is increased due to the pulsating flow of air during inhalation, and the volume of the compressor is increased because the large piston volume must be maintained in the case of low pressure stage There is a problem of heavy weight.

Due to the above problems, the installation space is narrowed even more effective space of the submarine or the trap, and the heavier the weight of the trap, the lower the resilience to rolling when rolling the ship, the noise and There were problems such as being easily exposed to enemy ships by vibration.

Such a high pressure air compressor is a structure that is difficult to meet the performance requirements of the recent high pressure air compressor to be enlarged, ultra-high pressure, and to reduce the vibration by increasing the weight of the compressor itself or vertically arranged to reduce the vibration, In the reciprocating piston compressor as described above, it is difficult to achieve the best purpose.

In order to solve the above problems, the first stage compresses air by installing a screw compressor in the first stage of compression stage, and then installs two, three, and four stages of compression stage in a single block by installing a reciprocating piston of small size. It is a technical task to make it possible to reduce the required power, realize low vibration and noise, and to reduce the weight and size drastically by constructing a complex cycle type with a completely different compression method.

In order to achieve the above object, the present invention provides a screw compressor driven by a gear or a belt to a crank shaft that is rotated by receiving power from a motor, and a high pressure reciprocating piston having a small stroke is directly reciprocated by a crank shaft. It is installed so as to replace the unbalanced one-stage reciprocating compression stage with screw compression stage to remove suction pulsation, significantly reduce vibration and magnitude, and greatly improve suction volume efficiency.

1 is a perspective view showing an example of a compound cycle-type high pressure air compressor according to the present invention.

2 is a longitudinal sectional view showing the main part of the present invention;

Fig. 3 is a plan sectional view showing the main part of the present invention.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a cross-sectional view taken along the line B-B in FIG.

6 is an explanatory diagram showing a working process of the present invention.

<Explanation of symbols for main parts of drawing>

1: motor 2: motor shaft 3: shaft connection housing

4: Crankcase 5: Crankcase 6: Crankshaft

7 compression piston 8 flexible coupling 9 drive pulley

10 screw compression chamber 11 rotary screw roller 12 screw compressor

13 belt 14 suction filter 15 base oil separator

16: 1st cooler 17: 2nd cooler 18: 1st cooler

19: two stage cooler 20: three stage cooler 21: four stage cooler

22: 1 stage water separator 23: 2 stage water separator 24: 3 stage water separator

25: 4-stage water separator 26: oil cooler

Hereinafter, the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 6.

As shown in FIGS. 1 and 4 and 5, a shaft connecting housing 3 is installed in front of the motor 1 installed in the horizontal direction, and a crankcase 4 is installed in front of the shaft connecting housing 3. And a crank chamber 5 therein, and the crank shaft 6 is horizontally installed in the crankcase 4 so that the distal end thereof protrudes into the axial connection housing 3.

Then, on both sides of the crankcase (4), two reciprocating compression pistons (7) having similar masses are installed to reciprocate in a horizontal direction by being coupled to the crankshaft (6), and inside the shaft connecting housing (3). An end of the crankshaft 6 and the motor shaft 2 are connected via a flexible coupling 8, and a drive pulley 9 at the end of the crankshaft 6 located inside the shaft connecting housing 3. ) Is built up.

In addition, a screw compression chamber 10 is installed at an upper portion of the crankcase 4, and a screw compressor 12 is installed in the screw compression chamber 10 in which a pair of rotating screw rollers 11 are horizontally engaged with each other. The distal end of the rotary screw roller 11 is installed to protrude toward the shaft connecting housing 3 side, and the driven pulley 12a is constructed and the belt 13 is wound around the drive pulley 9 and the driven pulley 12a. have.

A base oil for separating oil contained in the compressed air compressed by the screw compressor 12 is installed on the suction side of the screw compressor chamber 12, the suction side of the predetermined position on the upper side of the screw compressor (12). It is connected with the separator 15 as a hose.

In addition, the first and second coolers 16 and 17 are installed at both sides of the screw compressor 12, among which the primary cooler 16 is compressed by the screw compressor 12 inside the cylindrical body. The first stage cooler 18 for cooling the air is built-in, and the second, third and fourth stage compression pistons 7a, 7b and 7c for cooling the compressed air in the second, third and fourth compression pistons 17, Four stage coolers 19, 20 and 21 are inserted.

In addition, the compressed air in the screw compressor 12 and the reciprocating compression piston 7 in the predetermined position on the rear side of the secondary cooler 17 is included in the compressed air in the process of compressing the 1,2,3,4 stages. 1,2,3,4-stage water separators 22, 23, 24 and 25 are provided for separating the cooling oil and compressed air.

Referring to Figures 1 to 6 the operational relationship of the present invention configured as described above is as follows.

As shown in FIG. 2 to FIG. 6, when the motor 1 rotates, the crankshaft 6 connected to the motor shaft 2 and the motor shaft 2 is rotated by the rotational force of the motor 1. A drive pulley 9 is provided at the distal end of the crankshaft 6, and the drive pulley 9 and the driven pulley 12a built in the rotary screw roller 11 of the screw compressor 12 are connected as the belt 13. The crankshaft 6 and the pair of rotating screw rollers 11 rotate.

As described above, a pair of rotary screw rollers 11 and a crankshaft 6 rotate, so that the screw compressor 12 and the crankshaft 6 are installed so that the pair of rotary screw rollers 11 can rotate. Four installed 2, 3, 4 compression pistons (7a, 7b, 7c) is reciprocated while inhaling and compressing air, respectively, from the screw compressor 12 to 2, 3, 4 compression pistons (7a, 7b, 7c) the circuit is connected so that the compression can be performed in a step-by-step order, so that the suction and compression of air from the screw compressor 12 is made.

As the pair of rotary screw roller 11 rotates as described above, the first air in the screw compression chamber 10 is sucked while the outside air is sucked through the suction filter 14 installed at the suction port of the screw compression chamber 10. Is compressed, and the compressed air from the screw compressor (12) flows into the base oil separator (15) to separate the cooling oil from the base oil separator (15) and the high temperature compressed air from which the cooling oil is separated. ) And cooling oil is cooled in the oil cooler (26).

Then, the cooling oil cooled in the oil cooler 26 is sent to the screw compressor 12 to lubricate while cooling the heat generated during the operation of the screw compressor, and the compressed air cooled in the first stage cooler 18 is the first stage. As water is introduced into the water separator 22, water is separated and removed from the first water separator 22, and then flows into the second compression piston 7a to be secondarily compressed. Cooled through the stage cooler 19 and introduced into the second stage water separator 23, the water is separated and removed.

The two-stage compressed air as described above is introduced into the three-stage compressed piston (7b) to be compressed in the third stage, and the compressed three-stage compressed air is cooled through the three-stage cooler (20) and the three-stage water separator (24). Water is separated and removed.

Thereafter, the three-stage compressed air is introduced into the four-stage compressed piston (7c), the four-stage compressed piston (7c) is composed of two and the suction port of the two four-stage compressed piston (7c) is a three-stage separator (24). In parallel with the hose of the two) four-stage compressed piston (7c) is compressed at the same time and the compressed four-stage compressed air flows into one four-stage cooler (21) through each outlet and cooled, and then After passing through the four-phase water separator 25, water is separated and discharged in the case of a check valve.

As described above, the multicycle high pressure air compressor of the present invention compresses air in a first stage by installing a screw compressor in a first stage compression stage, followed by a reciprocating piston having a small size in a 2,3,4 stage compression stage. It is installed in one block and composed of complex cycle type with totally different compression method, which greatly improves the compression efficiency while reducing power consumption, realizing low vibration and low noise, and dramatically reducing the weight and size.

Therefore, it is very suitable for filling ultra-high pressure compressed air in torpedoes such as submarines and ships that require a small space for installation and very low noise and vibration, and for starting gas turbines and starting engines of diesel engines. In addition, it is also very useful for filling high pressure air into the high pressure air tank for breathing in diving and firefighting.

Claims (1)

In the case where a plurality of reciprocating compression pistons 7 are installed in multiple stages on the crank shaft 6 which rotates in connection with the motor shaft 2 to compress air at high pressure, A shaft connecting housing 3 is installed at the front of the horizontally installed motor 1, and a crankcase 4 is installed at the front of the shaft connecting housing 3 to provide a crank chamber 5 therein, and the crank The crankshaft 6 is horizontally installed in the case 4 so that the distal end protrudes into the axial connection housing 3, and two reciprocating pistons 7 are arranged on both sides of the crankcase 4 in the horizontal direction. And the distal end of the crankshaft 6 and the motor shaft 2 are connected through the flexible coupling 8 to the inside of the shaft connecting housing 3, and inside the shaft connecting housing 3. At the distal end of the located crankshaft 6 a drive pulley 9 is arranged, The upper part of the crankcase (4) is provided with a screw compression chamber (10) provided with a suction filter (14) on the suction side, the screw compression chamber (10) is a horizontal so that a pair of rotary screw rollers 11 mesh with each other. The installed screw compressor 12 is installed, and the distal end of the rotary screw roller 11 is installed to protrude toward the shaft connecting housing 3, and the driven pulley 12a is built up, and the driving pulley 9 and the driven pulley 12a are installed. ) Is a multi-cycle high pressure air compressor, characterized in that the belt (13) is wound.