KR101559108B1 - Gas compression device with rodless cylinder - Google Patents

Gas compression device with rodless cylinder Download PDF

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Publication number
KR101559108B1
KR101559108B1 KR1020150054480A KR20150054480A KR101559108B1 KR 101559108 B1 KR101559108 B1 KR 101559108B1 KR 1020150054480 A KR1020150054480 A KR 1020150054480A KR 20150054480 A KR20150054480 A KR 20150054480A KR 101559108 B1 KR101559108 B1 KR 101559108B1
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South Korea
Prior art keywords
gas
working fluid
piston
rodless cylinder
cylinder
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KR1020150054480A
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Korean (ko)
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하종근
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하종근
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/008—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being a fluid transmission link
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

More specifically, the present invention relates to a gas compression apparatus, and more particularly, to a gas compression apparatus that includes two or more rodless cylinders for continuously compressing gas on a gaseous phase and repeatedly supplying and recovering a working fluid to a lower portion of the cylinder by operation of a solenoid valve And more particularly to a gas compression apparatus having a rodless cylinder for compressing a gas continuously and repeatedly compressing and discharging gases on two or more rodless cylinders to compress all kinds of gases such as hydrogen or natural gas.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas compression apparatus having a rodless cylinder,

More specifically, the present invention relates to a gas compression apparatus, and more particularly, to a gas compression apparatus that includes two or more rodless cylinders for continuously compressing gas on a gaseous phase and repeatedly supplying and recovering a working fluid to a lower portion of the cylinder by operation of a solenoid valve And a rodless cylinder for compressing gas of all kinds such as hydrogen or natural gas by continuously compressing and discharging the gas repeatedly by compressing and discharging the gas over two or more rodless cylinders .

Pistonless compressors for gaseous media are known from US 6,652,243 B2.

In this pistonless compressor, the working fluid in the compressor cylinder is connected to a displacement machine composed of a hydraulic pump, and a control valve is provided to control the inflow and outflow of the working fluid, and the control valve is connected to a compressor And is controlled according to the fluid level of the working fluid in the cylinder. The compressor cylinders are preferably arranged vertically, thereby helping out the working fluid out of the displacement cylinder through gravity.

In such a compressor, the fluid column of the working fluid can not be accelerated by the gravitational acceleration, whereby the cycle speed of the compressor is limited by the gravitational acceleration.

Due to this high cycle time and long station time, this compressor has a high transfer flow pulsation of the transfer flow of the compressed medium.

If a uniform transfer flow of the compressed medium is required, for example, an intermediate reservoir is required for refueling the vehicle, where the compressor cylinder is carried. In order to obtain high compressor performance, the large cylinder dimensions of the compressor cylinder are needed because of the high cycle time. The large cylinder dimensions and the intermediate reservoir result in a high manufacturing cost and a need for a lot of space. Also, through the electronic transfer measurement system and the control valve, high structural expenditure is caused. Also, through the large cylinder dimensions, a large amount of working fluid is required, which leads to high manufacturing costs and high operating costs. In order to drive a large amount of working fluid, a strong hydraulic pump is required, which has a correspondingly high manufacturing cost and a high noise level in operation.

From WO 2006/034748 A1, a pistonless compressor is known as a working fluid formed as an ionic fluid. A separation device is provided to retrieve the ionic fluid carried into the compressed medium from the outlet conduit. The ionic fluid is injected into the compressor cylinder by an injection device. To this end, a level measuring system is provided whereby the level of the working fluid in the compressor cylinder is measured, and when the working fluid falls below the reference value, the working fluid is injected into the compressor cylinder by means of the injection device. In addition to the already known disadvantages from US 6,652,243 B2, the compressors known from WO 2006/034748 A1 have a high structural expenditure by the level measuring system.

Also, general compressors are known in which a displacement machine is configured as a piston machine with one or more cylinder chambers, each cylinder chamber being connected to a compressor cylinder. Here, the transfer flow of the compressed medium is made by a plurality of compressor cylinders, the compressor cylinders being connected respectively to the cylinder chambers of the piston machine and being conveyed continuously and uniformly to the outlet conduits, The transfer flow of the medium can be obtained. Such a general compressor has a short station time and a short cycle time, whereby the cylinder dimensions of the compressor cylinder can be reduced. Here, small structural space requirements and low manufacturing costs are incurred. In addition, the amount of working fluid can be reduced, thereby similarly resulting in lower operating costs. In addition, it is possible to move the working fluid with approximately gravitational acceleration, and the piston machine can be operated at a high rotational speed. As a result, for high compressor performance, the structural cost and noise annoyance can be reduced for a displacement machine configured as a piston machine.

However, in this general compressor, due to the short cycle time in the compressor cylinder, accurate level measurement of the working fluid is no longer possible, thereby ensuring the safe operation of the compressor in a sufficient amount of working fluid in the displacement cylinder .

In order to solve such a problem, a pistonless compressor is disclosed in Korean Patent Registration No. 10-1422807.

The pistonless compressor relates to a compressor 1 for compressing a gaseous medium as shown in Figure 1 and the compressor comprises an inlet pipe 6 for the medium and one or more compressor cylinders 4a connected to the outlet pipe 7, 4e, 4e, 4c, 4d, 4e, and a working fluid 5, in particular an ionic working fluid, is arranged in the compressor cylinders 4a, 4b; 4c; 4d; 4e, The displacement machine (2) is configured as a piston machine with one or more cylinder spaces (2a; 2b; 2c; 2d; 2e), and each cylinder space (2a; 2b; 2c; 2e interact with the compressor cylinders 4a (4b; 4c; 4d; 4e).

In order to solve the problem of providing a compressor that ensures safe operation with a minimum of configuration effort, the present invention is advantageous in that the separating device 8 for the working fluid 5 is connected to the outlet pipe 7 of the compressor 1 And the separating device 8 interacts with the inlet piping 6 of the compressor 1 for recirculation of the working fluid 5.

However, in such a conventional pistonless compressor, since there is no piston between the working fluid and the gas medium, the working fluid and the gas are in direct contact with each other, and the working fluid is lowered by the gravity force only to suck the gas. There is a problem in that it is not suitable as a compression device because the compression efficiency is low.

In addition, the direct contact between the gas and the operating oil causes the operating oil to be transported in the gas and is transported as gas to require the operating oil separator and the recirculating device. In order to facilitate the separation of the gas and the working oil, There is a problem that the production cost is high due to the complicated configuration such as the provision of the level measurement system in the tank.

In addition, ionized working oil is distributed at a high speed using a rotary type radial distributor, so that ionization of the ionized fluid is broken, ionization is rapidly destroyed, the amount of operating fluid transferred to be contained in the gas is further increased, So that it is necessary to install a preliminary gas compressor in front of the inlet, so that noise and heat generation are large and there is no advantage over the conventional compression device.

In addition, although five compression cylinders are constituted, since the working fluid is sequentially distributed and supplied to only one cylinder by the rotary distributor, the compression process proceeds from one cylinder end to the next, so that the compression efficiency is low, There is a problem that the manufacturing cost is high due to a large number and complexity.

Korean Patent Registration No. 10-1422807

In order to solve the above-mentioned problems, the present invention provides an even number of two or more rodless cylinders for continuously compressing the gas on the gas phase, and repeatedly supplying and recovering the working fluid to the lower part of the cylinder by the operation of the solenoid valve There is provided a gas compression apparatus having a rodless cylinder for compressing gas of all kinds, such as hydrogen or natural gas, by repeatedly compressing and discharging gas repeatedly by compressing and discharging the gas above the plurality of rodless cylinders, There is a purpose.

According to an aspect of the present invention,

A gas inlet and a gas outlet are formed at one end to supply gas in a gaseous state through a gas supply pipe and to be discharged through a gas discharge pipe and a fluid outlet A rodless cylinder in which a piston is lifted and lowered by a working fluid to forcibly suck and compress gas to a vacuum state; A hydraulic pump for supplying working fluid to the fluid inlet and outlet of the rodless cylinder through the working fluid pipe to compress gas in the rodless cylinder; A gas storage tank which is compressed in the rodless cylinder and stores gas discharged through the gas discharge port and the gas discharge pipe; A pressure sensor for measuring an internal pressure of the gas storage tank and an internal pressure of the gas supply pipe, respectively; A position sensor installed at the upper and lower ends of the rodless cylinder to measure a position of the piston; And controlling the operation of the hydraulic pump according to the position of the piston sensed by the position sensor when the storage pressure is lower than the reference pressure by measuring the internal pressure of the gas storage tank through the pressure sensor And a controller.

Here, two or more of the rodless cylinders are connected in parallel, but are provided in an even number.

Here, the hydraulic pump is provided with a plurality of hydraulic pumps in order to shorten the compression time of the gas.

Here again, each said hydraulic pump comprises a solenoid valve for changing the flow of working fluid; A fluid cooler for the pump for cooling the working fluid is provided.

The controller measures the internal pressure of the gas storage tank through the pressure sensor. When the storage pressure is less than the reference pressure, the controller measures the internal pressure of the gas supply pipe through the pressure sensor to determine the load, And a controller for controlling the flow of the operating fluid by using the solenoid valve according to the position of the piston sensed by the position sensor so as to control the operation of the plurality of the rodless cylinders The gas is compressed and discharged continuously.

Here, the gas compression apparatus having the rodless cylinder further includes a working fluid supply tank provided in association with the working fluid pipe to absorb a change in the volume of the working fluid and to supply a proper amount of the working fluid.

Here, the piston of the rodless cylinder is provided with a piston ring on the outer circumferential surface thereof, and a first magnet formed in a ring shape on an upper surface of the piston is attached to absorb the lubricant containing the magnetic material adsorbed on the first magnet And performs lubrication action during ascending and descending.

Here, the gas storage tank may include a gas cooler for the tank at the front end so as to cool the gas whose temperature has been increased while being compressed in the rodless cylinder, A plate-shaped second magnet is provided on an inner bottom surface corresponding to the gas discharge pipe so as to remove lubricant material absorbed from the upper surface of the piston of the rodless cylinder and discharged through the gas discharge pipe.

Here, the gas storage tank has a drain pipe formed on its bottom surface to discharge the lubricant collected in the second magnet.

According to the gas compression apparatus having the rodless cylinder as described above, two or more rodless cylinders are provided in an even number in order to continuously compress the gas on the gas phase, and the operation fluid is supplied to the lower portion of the cylinder by the operation of the solenoid valve And the number of times is repeated, the gas above the two or more rodless cylinders is compressed and discharged repeatedly to compress and discharge the gas continuously. Thus, the compression efficiency is high and the piston is lifted and lowered by the working fluid without the rod, Power can be lowered.

In addition, since the present invention does not require a crank for changing the rotational motion of the motor into a linear motion and a piston rod for pushing the piston, a crank, a crank chamber, a piston rod, and a lubrication apparatus provided in the conventional compressor are not needed, Isothermal compression is possible. In the upper part of the piston, the gaseous gas is repeatedly compressed and discharged to move up and down. The lower surface provides the lubricating action of the working fluid and the upper surface is chemically safe to the kind of gas It is possible to lubricate the inner surface of the cylinder and the piston ring of the piston by providing an appropriate amount of unmixed lubricant material to increase the sealing force and the wear resistance and to retain the purity of the compressed gas by collecting the lubricant material from the inner bottom surface of the storage tank.

According to the present invention, it is possible to increase the compression efficiency and reduce the power consumption by adjusting the reciprocating cycle time of the rodless cylinder by stepping the plurality of hydraulic pumps in accordance with the gas pressure, and the working fluid is supplied to the rodless cylinder by the hydraulic pressure Since the power is transmitted, the gas compression chamber is sealed by isolating it from the electric device such as the hydraulic motor and the solenoidal bed so that the electric device can be configured as a general type instead of the explosion-proof type, so the manufacturing cost of the system can be reduced.

In addition, the present invention provides a working fluid supply tank in the working fluid pipe to absorb or increase the volume increase of the fluid during operation, thereby increasing the long-term operation efficiency and reducing the maintenance, and the hydraulic pump inlet and the gas storage tank A cooler that lowers the temperature of the working fluid is installed at the inlet to circulate the working fluid temperature below the atmospheric temperature so that the temperature of the cylinder is continuously cooled. In order to prevent the temperature of the gas from rising during the compression process, A flexible piston ring in the circumferential direction of the piston is installed to eliminate the friction between the inner wall of the rodless cylinder and the piston and to supply the cooled working fluid to the rodless cylinder and the piston bottom to raise the temperature of the gas by friction And the temperature of the working fluid is kept constant below the atmospheric temperature As the body is compressed, the temperature of the contacting cylinder and the piston is kept constant so that external heat due to the compression process is prevented from being transferred to the gas, so that isothermal compression of the gas is possible, cooling of the compressed gas is unnecessary, have.

1 is a block diagram showing the configuration of a conventional pistonless compressor.
2 is a block diagram showing a configuration of a gas compression apparatus having a rodless cylinder according to the present invention.
3 is a cross-sectional view showing the configuration of a piston of a gas compression apparatus having a rodless cylinder according to the present invention.
4 is a cross-sectional view showing the configuration of a magnet adsorption plate among gas compression apparatuses having a rodless cylinder according to the present invention.
5 is a cross-sectional view showing the shape of a piston ring in a gas compression apparatus having a rodless cylinder according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of a gas compression apparatus having a rodless cylinder according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

3 is a cross-sectional view showing the configuration of a piston of a gas compression apparatus having a rodless cylinder according to the present invention, and Fig. 4 is a cross- sectional view of the gas compression apparatus having a rodless cylinder according to the present invention. Sectional view showing the structure of a magnet adsorption plate among gas compression apparatuses having a rodless cylinder according to the present invention.

2 to 4, a gas compression apparatus 100 having a rodless cylinder according to the present invention includes a rodless cylinder 110, a hydraulic pump 120, a gas storage tank 130, A sensor PS, a position sensor LS and a controller 140. [

First, the rodless cylinder 110 is formed into an empty cylindrical shape, and a gas in a gaseous state at one end is supplied through the gas supply pipe GSL and is supplied to the gas supply port 111 And a gas outlet 112 are formed at the other end of the piston 114 and a fluid outlet 113 connected to the working fluid pipe OL is formed at the other end of the piston 114. The piston 114 is moved up and down by the working fluid, And then compressed. At this time, a check valve CV is provided to the gas supply port 111 and the gas discharge port 112 so that gas is moved only in one direction.

Here, it is preferable that two or more rodless cylinders 110 are connected in parallel, but are provided in an even number.

3, the piston 114 of the rodless cylinder 110 is provided with a piston ring 115 on the outer circumferential surface thereof and a first magnet 116 formed in a ring shape on the upper surface of the piston 114, The lubricant 118 containing the magnetic material 117 adsorbed by the first magnet 116 is adsorbed to perform a lubricating action during ascending and descending. The magnetic material 117 is powder such as ferrite and the lubricant material 118 is treated with a surfactant such as a fluid component so that the magnetic material 117 and the lubricant material 118 are ionic, 114, and is positioned above the piston ring 115 to prevent leakage of gas and to lubricate the inner surface of the rodless cylinder 110 at the time of up-and-down motion, thereby preventing heat generation and improving wear resistance .

The end of the piston ring 115 is formed as shown in Fig. 5 in order to minimize the generation of frictional heat during ascending and descending and to prevent contact between the base body and the working fluid.

The hydraulic pump 120 supplies the working fluid to the fluid inlet 113 of the rodless cylinder 110 through the working fluid pipe OL to compress the gas in the rodless cylinder 110. Here, the hydraulic pump 120 is provided with a plurality of pumps for shortening the compression time of the gas, and the flow of the working fluid is changed in the working fluid pipe OL between the hydraulic pump 120 and the rodless cylinder 110 And a fluid cooler C1 for the pump for cooling the working fluid are provided, respectively.

In addition, the gas storage tank 130 stores gas that is compressed in the rodless cylinder 110 and discharged through the gas discharge port 112 and the gas discharge pipe (GOL).

Here, the gas storage tank 130 is provided with a gas cooler C2 at the front end so as to cool the temperature-raised gas while being compressed in the rodless cylinder 110, The gas discharge pipe 131 is connected to the gas discharge pipe GOL and extends to the lower portion of the rodless cylinder 110. The lubricant material contained in the piston 114 of the rodless cylinder 110 and discharged through the gas discharge pipe 131 A plate-shaped second magnet 132 is installed on the inner bottom surface corresponding to the gas discharge pipe 131 so as to remove the first discharge port 118.

Subsequently, the gas storage tank 130 is formed with a drain pipe 133 for discharging the lubricant material 118 captured by the second magnet 132 on the bottom surface thereof.

The pressure sensor PS is installed in the gas storage tank 130 and the gas supply pipe GSL to measure the internal pressure of the gas storage tank 130 and the internal pressure of the gas supply pipe GSL.

Subsequently, the position sensor LS is installed at the upper and lower ends of the respective rodless cylinders 110 to measure the position of the piston 114.

The controller 140 measures the internal pressure of the gas storage tank 130 through the pressure sensor P and operates the hydraulic pump 120 when the storage pressure is lower than the reference pressure. And controls the operation of each hydraulic pump 120 according to the position of the piston. Here, the controller 140 measures the internal pressure of the gas storage tank 130 through the pressure sensor PS. If the storage pressure is lower than the reference pressure, the controller 140 again measures the internal pressure of the gas supply pipe GSL through the pressure sensor PS. (LS) of the plurality of hydraulic pumps (120) according to the amount of load and determines the number of motions of the plurality of hydraulic pumps (120) according to the load, The flow of the operating fluid is controlled by using the solenoid valve SV according to the position of the piston sensed in the rodless cylinder 110 so that the gas is continuously compressed and discharged from the plurality of rodless cylinders 110.

Meanwhile, the gas compression apparatus 100 having the rodless cylinder according to the present invention is provided with a working fluid supply tank (not shown) connected to the working fluid pipe OL to absorb a change in the volume of the working fluid and supply a proper amount of working fluid 150). At this time, the working fluid supply tank 150 may include a water level meter to check the level of the working fluid, and the level of the water level meter may be transmitted to the controller 140 so as to be monitored.

Hereinafter, the operation of a gas compression apparatus having a rodless cylinder according to the present invention will be described in detail with reference to the accompanying drawings.

First, the controller 140 measures the internal pressure of the gas storage tank 130 through the pressure sensor PS when the system is operated. When the storage pressure is lower than the reference pressure, the controller 140 controls the pressure sensor PS installed in the gas supply pipe GSL (PS) to measure the internal pressure of the gas supply pipe (GSL).

(For example, low load, heavy load, heavy load, etc.) according to the internal pressure of the gas supply pipe GSL, and determines the number of motors of the plurality of hydraulic pumps 120 according to the load.

Then, the controller 140 operates all of the hydraulic pumps 120 when the load is heavy, and only partially when the load is heavy, and only one when the load is low.

When the hydraulic pump 120 operates, the working fluid is pressurized and is introduced into the fluid inlet / outlet 113 of one of the rodless cylinders 110 by the solenoid valve SV to lift the piston 114, Thereby compressing the gas. At this time, the piston 114 of the rodless cylinder 110 lubricates when lifted by the lubricant material 118 adsorbed by the first magnet 116, and the lubricant material on the inner wall of the rodless cylinder 110 The piston ring 118 raises the piston ring 115 all together.

When the gas is compressed and the pressure becomes higher than the internal pressure of the gas storage tank 130, the compressed gas is discharged through the gas discharge port 112 and the gas discharge pipe (GOL) and stored in the gas storage tank 130.

In this state, when the piston 114 is lifted up to the position of the position sensor LS provided at the upper end of the rodless cylinder 110, the controller 140 controls the solenoid valve SV so as to rotate the other rodless cylinder 110 So that the working fluid is supplied.

Then, the piston 114 of one of the rodless cylinders 110 is lowered by the suction force of the hydraulic pump 120 to suck the gas of the gas supply pipe GSL through the gas supply port 111. The pressure of the gas inlet can be sucked up to the vacuum state by the forced suction force by the hydraulic pump.

At this time, when the piston 114 of the rodless cylinder 110 is lowered, the lubricant 118 is lowered together with the first magnet 116 to lubricate the working fluid, and the working fluid on the inner wall of the rodless cylinder 110 All of the piston rings 115 are lowered.

When any one of the rodless cylinders 110 and the other rodless cylinder 110 operates alternately, the controller 140 compresses the gas and stores the compressed gas in the gas storage tank 130, When the pressure of the storage tank 130 reaches the reference pressure, the operation of the hydraulic pump 120 is stopped.

At this time, the controller 140 controls the solenoid valve SV to shut off the flow of the working fluid so that the pressure of the gas above the piston 114 of the rodless cylinder 110 and the pressure of the lower working fluid become equal.

On the other hand, since the working fluid is cooled and recirculated by the fluid cooler (C1) for the pump, the internal temperature of the rodless cylinder (110) is lowered to the same temperature as the working fluid and furthermore, A flexible piston ring 115 in the circumferential direction of the piston 114 is installed to eliminate the cause of friction between the inner wall of the rodless cylinder 110 and the piston 114 and to supply the cooled working fluid to the rodless cylinder 110 and the piston 114 to prevent temperature rise of the gas due to friction so that the gas is isothermally compressed so that external heat due to the compression process is not transferred to the gas.

Further, since the working fluid circulates and changes in viscosity and volume with temperature, the working fluid supply tank 150 installed in the working fluid pipe OL absorbs the volume change of the working fluid and supplies a proper amount of working fluid .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

The gas compression according to the present invention can be applied to the compression of all gases such as air as well as combustible gases such as hydrogen and natural gas because the working fluid and the gas do not come into direct contact with each other.

110: rodless cylinder 114: piston
116: first magnet 117: magnetic material
118: Lubricant material 120: Hydraulic pump
130: gas storage tank 132: second magnet
140: Controller 150: Working fluid supply tank
C1, C2: Cooler LS: Position sensor
PS: Pressure sensor SV: Solenoid valve

Claims (9)

A gas inlet and a gas outlet are formed at one end to supply gas in a gaseous state through a gas supply pipe and to be discharged through a gas discharge pipe and a fluid outlet And the piston is forcedly inhaled into the vacuum state by moving the piston upward and downward by the working fluid to compress the piston. The piston ring is provided on the outer circumferential surface of the piston, and the first magnet A rodless cylinder having two or more connected in parallel and provided in an even number, and a second rodless cylinder connected to the first magnet and the second rodless cylinder;
A hydraulic pump having a plurality of hydraulic pumps for supplying working fluid to the fluid inlet and outlet of the rodless cylinder through the working fluid pipe to compress the gas in the rodless cylinder and to shorten the compression time of the gas;
A gas cooler is provided at the front end for compressing the gas discharged through the gas discharge port and compressed by the rodless cylinder to cool the gas whose temperature has been increased while being compressed by the rodless cylinder, And a gas discharge pipe connected to the gas discharge pipe, the gas discharge pipe extending from the lower end of the piston to the gas discharge pipe, A gas storage tank in which a plate-shaped second magnet is disposed on a bottom surface, and a drain pipe is formed on the bottom surface to discharge lubricant collected in the second magnet;
A pressure sensor for measuring an internal pressure of the gas storage tank and an internal pressure of the gas supply pipe, respectively;
A position sensor installed at the upper and lower ends of the rodless cylinder to measure a position of the piston;
A working fluid supply tank connected to the working fluid pipe to absorb a change in the volume of the working fluid and to supply a proper amount of working fluid; And
The internal pressure of the gas storage tank is measured through the pressure sensor, and if the storage pressure is less than the reference pressure, the internal pressure of the gas supply pipe is measured to determine the load amount. And a controller for controlling the flow of the operating fluid by using the solenoid valve according to the position of the piston sensed by the position sensor so that the gas is continuously compressed and discharged from the plurality of rodless cylinders Wherein the rod-shaped cylinder has a cylindrical shape. delete delete The method according to claim 1,
Each of the hydraulic pumps includes:
A solenoid valve for changing the flow of the working fluid;
And a fluid cooler for the pump for cooling the working fluid is provided. delete delete delete delete delete
KR1020150054480A 2015-04-17 2015-04-17 Gas compression device with rodless cylinder KR101559108B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101668672B1 (en) 2016-08-01 2016-10-24 최상배 Liquid pressed gas compressor having pressure-volume converting device and torque converting device
KR102417189B1 (en) 2022-04-08 2022-07-06 주식회사 티이씨 Gas compression device for usingionic liquid
GB2605500A (en) * 2021-02-09 2022-10-05 Univ Xi An Jiaotong Liquid piston compressor with oil-supplementing slippage pump and high-speed switch valve
GB2605690A (en) * 2021-02-09 2022-10-12 Univ Xi An Jiaotong Liquid piston compressor with oil-supplementing energy accumulator and high-speed switch valve
WO2023158057A1 (en) * 2022-02-16 2023-08-24 지에이치피 시스템 주식회사 High-efficiency fluid compression apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101668672B1 (en) 2016-08-01 2016-10-24 최상배 Liquid pressed gas compressor having pressure-volume converting device and torque converting device
DE102016124636A1 (en) 2016-08-01 2018-02-01 Sang-Bae Choi Liquefied gas compressor with a pressure-volume converter and a torque converter
DE102016124636B4 (en) 2016-08-01 2021-08-19 Sang-Bae Choi Liquefied gas compressor with a pressure-volume converter and a torque converter
GB2605500A (en) * 2021-02-09 2022-10-05 Univ Xi An Jiaotong Liquid piston compressor with oil-supplementing slippage pump and high-speed switch valve
GB2605690A (en) * 2021-02-09 2022-10-12 Univ Xi An Jiaotong Liquid piston compressor with oil-supplementing energy accumulator and high-speed switch valve
GB2605500B (en) * 2021-02-09 2023-04-05 Univ Xi An Jiaotong Liquid piston compressor with oil-supplementing slippage pump and high-speed switch valve
GB2605690B (en) * 2021-02-09 2023-04-05 Univ Xi An Jiaotong Liquid piston compressor with oil-supplementing accumulator and high-speed switch valve
WO2023158057A1 (en) * 2022-02-16 2023-08-24 지에이치피 시스템 주식회사 High-efficiency fluid compression apparatus
KR102417189B1 (en) 2022-04-08 2022-07-06 주식회사 티이씨 Gas compression device for usingionic liquid

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