KR20140009889A - Compressor and energy saving system using the same - Google Patents

Abstract

Disclosed are a compressing device and an energy saving system using the same. The present invention includes the compressing device including at least one suction unit which sucks fluid, a compression unit which compresses the fluid sucked via the suction unit by multiple stages; a discharge unit which discharges compressed air, and a heat exchanger installed on an outlet of the compression unit; a storing unit which is connected to the compressing device and which receives the fluid of the high pressures compressed by the compressing device; an expander which is driven by waste gas produced by the compression of the storing unit; and an external compression unit which is connected to a rotary shaft of the expander and which produces the fluid of high pressures. Fluid flows into the compression units from the outside, and the fluid compressed by the compression units is supplied to an external system connected to a compression system after being cooled inside the heat exchanger of the compressing device at a desired temperature so that a separate heat exchanger is not required on the outside of the compressing device. Therefore, the structure of the energy saving system is simple.

Description

Compressor and energy saving system using the same

The present invention relates to a compression device, and to a compression device in which the compression device and the heat exchanger are integrally modularized, and an energy saving system using the same.

Typically, a compression device is a device that compresses a fluid by applying a centrifugal force to the fluid using an impeller that rotates.

The industrial compression apparatus includes a compressor, an intercooler, an electric motor, and the like, and the fluid sucked through the filter installed at the inlet is discharged by increasing the pressure and temperature through one first stage compressor, and passing through the intercooler. The temperature is cooled to the room temperature level, the cooled air is sucked into one second stage compressor, the pressure and temperature are raised again, and after it is cooled again, it is transferred to the next stage compressor.

Compressed air generated using a compression device can be efficiently applied to an external system, such as a device for enzymatic culture, for a desired industrial field.

"Cold Fuel Cooling of Intercoolers and Aftercoolers" disclosed in Korean Laid-Open Patent Publication No. 2011-0059889 includes a two-stage turbocharger, cryogenic hydrogen fuel source, and hydrogen heat exchanger where a high altitude aircraft power plant has an engine, an intercooler, and an aftercooler. A cooling system comprising a group is disclosed. Korean Patent Publication No. 2011-0059889 discloses that air is introduced into one turbocharger compressor, which is not easy to compress a larger amount of air.

The present invention is to provide a compression device and an energy saving system using the same, the compression device and the heat exchanger can be configured integrally and modularized in the compression system, and the compressed fluid can be easily used in an external system connected thereto. It is a task.

According to an aspect of the present invention,

Suction unit for sucking the fluid; And,

Compression unit for compressing the fluid introduced from the suction unit in multiple stages;

Includes; discharge portion for discharging the compressed air;

The suction part and the compression part are each composed of a plurality,

At the outlet side of the compression section, a heat exchanger for cooling the multi-stage compressed fluid is installed.

In one embodiment, the compression unit includes a first stage compressor coupled to a subordinate having at least one gear and at least one rear stage compressor installed at a rear end of the first stage compressor.

In one embodiment, the speed reducer includes a bull gear that rotates with a power source supplied from an electric motor, and a plurality of pinion gears installed on both ends of the bull gear, wherein the first stage compressor is installed on one side of the bull gear And a first compressor having a first impeller, and a second compressor installed on the other side of the bull gear and having a second impeller, wherein a first suction part is formed at an inlet of the first compressor. A second suction part is formed at the inlet.

In one embodiment, the first compressor is rotatably coupled to one end of the first pinion gear shaft supporting the first pinion gear on one side of the bull gear, and the second compressor is second on the other side of the bull gear. It is rotatably coupled to one end of the second pinion gear shaft for supporting the pinion gear, the rear end compressor is rotatable to the third compressor rotatably coupled to the other end of the first pinion gear shaft, and to the other end of the second pinion gear shaft And a fourth compressor that is combined.

In one embodiment, the first compressor and the second compressor are connected to the pipe to distribute and inhale the fluid from the outside, and to distribute and discharge the flow rate of the compressed fluid.

In one embodiment, the heat exchanger is an aftercooler installed at least one downstream of the rear stage compressor.

Energy saving system using a compression device according to another aspect of the present invention,

A compression device having at least one suction part for sucking the fluid, a compression part for compressing the fluid introduced from the suction part in multiple stages, a discharge part for discharging the compressed air, and a heat exchanger provided at an outlet side of the compression part;

A storage unit connected to the compression device and configured to receive the high pressure fluid compressed from the compression device;

An expander driven by waste gas generated from the compressed fluid to the reservoir; And

And an external compression unit connected to the rotating shaft with respect to the expander to generate a high pressure fluid.

In one embodiment, the compression unit comprises a first stage compressor coupled to the gearbox having at least one gear, and at least one rear stage compressor installed at the rear stage of the first stage compressor, the heat exchanger and the rear stage compressor It is an aftercooler installed between the reservoirs.

In one embodiment, the external compression unit,

A steam suction unit for introducing low pressure steam from the outside;

A compression unit for compressing the fluid introduced from the steam suction unit; And

It includes; the steam discharge portion for discharging the compressed air.

In one embodiment, the compression unit comprises a first stage compressor coupled to the gearbox having at least one gear, and at least one rear stage compressor installed at the rear stage of the first stage compressor, the heat exchanger and the rear stage compressor An aftercooler installed between the storage unit, and one end of the shaft of the gear box is connected to the electric motor provided in the speed increaser, and the other end of the shaft of the gear box is connected between the expander and the external compression unit to provide the same rotational speed.

As described above, the compression apparatus of the present invention and the energy saving system using the same, fluid is introduced into the plurality of compression units from the outside, and the fluid compressed from the compression unit is cooled to a desired temperature in a heat exchanger provided in the compression apparatus. By supplying to an external system connected to the compression system, the structure is simplified as a separate heat exchanger is not required to be installed outside the compression device.

In addition, since the compression unit and the heat exchanger are integrally manufactured in the compression apparatus, the piping design at the rear end of the compression unit is easy.

1 is a block diagram showing a compression device according to an embodiment of the present invention,
2 is a block diagram illustrating an energy saving system to which the compression device of FIG. 1 is applied;
3 is a block diagram showing an energy saving system to which a compression device according to another embodiment of the present invention is applied.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and particular embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by terms. Terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, Should not be construed to preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Hereinafter, an embodiment of a compression device according to the present invention and an energy saving system using the same will be described in detail with reference to the accompanying drawings. And duplicate description thereof will be omitted.

1 illustrates a compression apparatus 100 according to an embodiment of the present invention.

Referring to the drawings, the compression device 100 includes an electric motor 110, a speed increaser 120, a plurality of compression units 130, an intercooler 140, and an aftercooler 150.

The electric motor 110 includes a drive motor that provides power to the compression device 100. The electric motor 100 may be selected from a constant speed motor rotating at a constant rotation speed and a variable speed motor capable of freely converting the rotation speed.

The speed increaser 120 includes a bull gear 121, a first pinion gear 122 coupled to one side of the bull gear 121, and a second coupled to the other side of the bull gear 121. And pinion gear 123. The gearbox 120 is a twin pinion type gearbox in which the first pinion gear 122 and the second pinion gear 123 are engaged with both ends of one bull gear 121, but is limited thereto. It is not.

The bull gear 121 is connected to one end of the bull gear rotating shaft 124. The other end of the blow gear rotation shaft 124 is connected to the motor output shaft 111 coupled to the electric motor 110 is drawn out of the gearbox case 125. Accordingly, the bull gear 121 is rotatable by receiving the rotational force of the electric motor 110.

The first pinion gear 122 is rotatably supported by the first pinion gear shaft 126, and the second pinion gear 123 is rotatably supported by the second pinion gear shaft 127. .

A first stage compressor 131 having at least one compressor is coupled to the first pinion gear shaft 126 and the second pinion gear shaft 127. The first stage compressor 131 includes a first compressor 132 and a second compressor 133.

A first impeller 134 of the first compressor 132 is coupled to one end of the first pinion gear shaft 126, and a second of the second compressor 133 is connected to one end of the second pinion gear shaft 127. Impeller 135 is coupled.

In this case, a first suction part 136 and a second suction part 137 are formed at each inlet of the first compressor 132 and the second compressor 133. The fluid 190 flowing from the outside may be sucked at the same time through the first suction part 136 and the second suction part 137. The fluid 190 flowing through the first suction part 136 and the second suction part 137 may suck the same flow rate.

As such, the first stage compressor 131 is hydrodynamically designed to have the same number of revolutions and to be rotatable in the same direction, and from the first suction part 136 and the second suction part 137. Since the first compressor 132 and the second compressor 133 for compressing the introduced fluid 190 are provided, it is possible to ensure twice the flow rate than when only one compressor is installed in the first stage compressor. In the present embodiment, the first stage compressor 131 is disclosed as having two compressors, but the number of compressors is not limited to two.

At each outlet side of the first compressor 132 and the second compressor 133, a first intercooler 141 that is a first heat exchanger and a second intercooler 142 that is a second heat exchanger are respectively installed. The fluid 190 compressed from the first compressor 132 and the second compressor 133 may pass through the first intercooler 141 and the second inter cooler through the first pipe 161 and the second pipe 162. 142, respectively.

The first inter cooler 141 and the second inter cooler 142 lower the temperature of the raised fluid 190 through the compression of the first stage compressor 131, thereby reducing the It is a heat exchanger that is additionally installed to achieve a desired compression ratio with power.

The rear stage compressor is provided in the first pinion gear shaft 126 and the second pinion gear shaft 127. That is, an impeller 173 of the third compressor 171 is coupled to the other end of the first pinion gear shaft 126, and an impeller of the fourth compressor 172 to the other end of the second pinion gear shaft 127. 174 is combined.

In the present embodiment, the third compressor 171 and the fourth compressor 172 serve as a two stage compressor, but the number of compressor stages installed at the rear stage of the first stage compressor 131 is not limited thereto. Depending on the configuration, it may be designed to be more than three stage compressor.

A third pipe 163 is installed between the first inter cooler 141 and the third compressor 171 to transfer the compressed fluid 190 supplied from the first inter cooler 141 to the third compressor 171. Can be supplied. A fourth pipe 164 is installed between the second inter cooler 142 and the fourth compressor 172, so that the compressed fluid 190 supplied from the second inter cooler 142 is supplied to the fourth compressor 172. Can be supplied.

In this case, the first compressor 132 and the third compressor 171 are synchronized with each other, and the second compressor 133 and the fourth compressor 172 are synchronized with each other. As such, the fluid 190 introduced into the first compressor 132 and the second compressor 133 is compressible while passing through the second compressor 171 and the fourth compressor 172 synchronized with them.

On the outlet side of the third compressor 171, a first after cooler 151, which is a third heat exchanger, is provided. The fluid 190 compressed from the third compressor 171 may be supplied to the first after cooler 151 through the fifth pipe 165. On the outlet side of the fourth compressor 172, a second after cooler 152, which is a fourth heat exchanger, is provided. The fluid 190 compressed from the fourth compressor 172 may be supplied to the second after cooler 152 through the sixth pipe 166.

The first after cooler 151 and the second after cooler 152 lower the temperature of the fluid 190 that is elevated through the compression of the third compressor 171 and the fourth compressor 172 to compress the compression apparatus 100 To be supplied to an external system connected to the system.

As such, it is preferable that at least one of the after coolers 151 and 152 is installed downstream of the second compressor 133 or the fourth compressor 172 which is a rear compressor.

On the other hand, on the path through which the fluid 190 flows, a flow meter 180 for measuring the flow rate of the flowing fluid 190 is provided.

Looking at the operation of the compression device 100 according to an embodiment of the present invention having the configuration as described above are as follows.

When power is applied, the electric motor 110 is rotated.

When the motor 110 is rotated, the motor output shaft 111 coupled to the motor 110, and the fire gear rotating shaft 124 connected thereto rotates, the fire connected to the fire gear rotating shaft 124 The gear 121 also rotates. The bull gear 131 is rotated at the same rotational speed with respect to the electric motor (110).

Subsequently, the first pinion gear 122 coupled to one side of the bull gear 121 and the second pinion gear 123 coupled to the other side of the bull gear 121 are rotated at the designed revolutions. In the present invention, the first pinion gear 122 and the second pinion gear 123 rotate at the same rotational speed.

Accordingly, the first impeller 134 provided in the first stage compressor 131 coupled to one end of the first pinion gear shaft 126 rotatably supporting the first pinion gear 122, and the first The third impeller 173 provided in the second stage compressor coupled to the other end of the pinion gear shaft 126 is rotated.

At the same time, the second impeller 135 provided in the first stage compressor 131 coupled to one end of the second pinion gear shaft 127 rotatably supporting the second pinion gear 123, and the second The fourth impeller 174 of the second stage compressor coupled to the other end of the pinion gear shaft 127 is rotated.

In this embodiment, the first compressor 132 and the third compressor 171 are synchronized with each other, the second compressor 133 and the fourth compressor 172 are synchronized with each other, and the rotation speed is the same.

Alternatively, the arrangement structure of the first to fourth compressors 132, 133, 171, and 172 is not limited thereto, and the fluid 190 may be sucked simultaneously through at least two or more suction units 136 and 137. If the multi-stage compression is performed in the compression device 100, the number of compressor stages, the structure in which the compressors are connected to each other using a bull gear, a pinion gear, or the like, the rotation speed of each compressor, or the rotation direction of each compressor Various designs may be made depending on the compression size of the desired fluid 190.

The principle of compression using the first compressor 132, the second compressor 133, the third compressor 171, and the fourth compressor 172 is based on the high speed rotation of each impeller 134, 135, 173, 174. It is possible by restoring the kinetic energy to the pressure energy, and the compression ratio that a single stage compressor can exert is limited, so that the multi-stage compression is realized.

The fluid 190 may be connected to the first compressor 132 through the first suction part 136 provided at the inlet of the first compressor 132 and the second suction part 137 provided at the inlet of the second compressor 133. And is sucked into the second compressor 133.

The fluid 190 flows into the first impeller 134 of the first compressor 132 and the second impeller 135 of the second compressor 133 at the same time, and the flow rate of the flow fluid 190 is substantially Equally distributed and aspirated.

The fluid 190 compressed in the first compressor 132 and the second compressor 133, which are the first stage compressor, is connected to the first inter cooler 141 and the second through the first pipe 161 and the second pipe 162. It is delivered to the inter cooler 142. The fluid 190 delivered to the first inter cooler 141 and the second inter cooler 142 is cooled by coolant or other medium to lower the temperature.

The cooled fluid 190 is transferred to the third compressor 171 and the fourth compressor 172 through the third pipe 163 and the fourth pipe 164, and the third impeller 173 and the fourth impeller. Rotation of 174 compresses to a higher pressure than the first compressor 132 and the second compressor 133, and at the same time the temperature is raised to discharge through the fifth pipe 165 and sixth pipe 166 do. The fluid 190 discharged through the fifth pipe 165 and the sixth pipe 166 is cooled again through the first after cooler 151 and the second after cooler 152 and the seventh pipe 167. Is discharged through.

The high pressure fluid 190 discharged through the seventh pipe 167 is transferred to an external system connected to the compression device 100 and can be efficiently used according to a desired purpose.

2 illustrates an energy saving system 200 to which the compression device 100 of FIG. 1 is applied.

Here, the energy saving system 200 is an external system using the fluid 190 compressed at a high pressure supplied from the compression device 100.

Referring to the drawings, the energy saving system 200 includes a storage unit R, 210 for receiving the fluid 190 compressed at high pressure. If the storage unit 210 is a culture tank for culturing the enzyme, the fluid 190 supplied to the storage unit 210, for example, compressed oxygen (O ₂ ), is used as an energy source for culturing the enzyme. .

The fluid 190 is sucked through the first suction part 136 and the second suction part 137 provided in the compression device 100, and includes a first compressor 132 and a second compressor 133. And a third compressor 171 and a fourth compressor 172 which are rotated in synchronization with the first compressor 131 and the first compressor 132 and the second compressor 133, respectively, and are installed downstream thereof. It is compressed in multiple stages by the second stage compressor, and is supplied to the storage unit 210 through the seventh pipe 167.

At this time, the waste gas generated before and after using the compressed air in the storage unit 210, for example, high-pressure nitrogen (N ₂ ) is used as a power drive source for driving the expander 220 through the first external pipe 211. Done. The expander 220 is coupled to one end of the rotation shaft 221. The other end of the rotary shaft 221 is connected to the steam compressor 230 is coaxial.

The expander 220 recovers power by the waste gas supplied through the first external pipe 211. That is, the expander 220 receives the waste gas from the storage unit 210 to generate rotational force on the rotating shaft 221.

Accordingly, the rotary shaft 221 is rotated, the low pressure steam introduced into the steam compressor 230 through the steam suction unit 241 from the external device is the steam compressor 230 received the rotational force of the rotary shaft 221 The pressure is increased by the high pressure steam by the compression of) and is discharged through the steam discharge unit 242, the discharged steam can be recycled, or used in other generators.

Meanwhile, the low temperature low pressure waste gas discharged from the expander 220 may be discharged to the outside through the second external pipe 212.

3 illustrates an energy saving system 200 to which the compression device 100 of FIG. 1 is applied according to another embodiment of the present invention.

Referring to the drawings, the energy saving system 200 is provided so that the fluid 190 compressed in multiple stages from the compression device 100 is supplied to the storage 310 and used as a desired energy source in the storage 310. do.

The waste gas generated after using the compressed air in the storage unit 310 is delivered to the expander 320 through the first external pipe 311 to be used as a power driving source. The expander 320 is coupled to one end of the rotation shaft 321. At the other end of the rotary shaft 321, a steam compressor 330 is coaxially connected with respect to the rotary shaft 321.

The expander 320 rotates the rotating shaft 321 by the compressed waste gas supplied from the storage 310. When the rotating shaft 321 is rotated, the steam compressor 330 is driven. Accordingly, the low pressure steam introduced into the steam compressor 330 from the external device through the steam suction unit 341 is boosted by the high pressure steam, and the high pressure steam is recycled through the steam discharge unit 342.

Meanwhile, the low temperature low pressure waste gas discharged from the expander 320 may be discharged to the outside through the second external pipe 312.

In this case, the gear box 360 is connected to the rotary shaft 321 by a connecting shaft 351. The power take-off shaft 361 of the gear box 360 is connected to the electric motor 110 of the compression device 100.

The electric motor 100 is a drive motor that rotates at a low speed at a constant speed, and the gear box 360 converts the speed of the driving force through the connecting shaft 251 or the power drawing shaft 361.

For example, if the flow rate of the waste gas supplied to the expander 320 is large enough to be used for the compression of the steam compressor 330, the power of the rotating shaft 321 is transmitted by the connecting shaft 251 to the gear box. The driving force of the electric motor 100 may be reduced by being received at 360.

On the contrary, when the expander 320 receives excessive driving force, the expander 320 may supply the driving force of the electric motor 100 from the gear box 360 and supply the driving force to the steam compressor 330.

Compressor 110 Motor
120 ... Accelerator 121 ... Fire Gears
126 ... first pinion gear shaft 127 ... second pinion gear shaft
130 Compressor 131 Compressor 1
132 ... 2nd compressor 136 ... 1st suction part
137 ... Second suction section 140 ... Inter cooler
150 ... After cooler 151 ... First after cooler
152 ... 2nd After Cooler 171 ... 3rd Compressor
172 4th compressor 190 fluid
Energy saving system 210 Storage
220 ... Expander 230 ... Steam Compressor

Claims (10)

Suction unit for sucking the fluid; And,
Compression unit for compressing the fluid introduced from the suction unit in multiple stages;
Includes; discharge portion for discharging the compressed air;
The suction part and the compression part are each composed of a plurality,
And a heat exchanger for cooling the multi-stage compressed fluid at the outlet side of the compression section. The method of claim 1,
And the compression unit includes a first stage compressor coupled to a slave unit having at least one gear, and at least one rear stage compressor installed at a rear stage of the first stage compressor. 3. The method of claim 2,
The speed reducer includes a bull gear rotating with a power source supplied from an electric motor, and a plurality of pinion gears installed at both ends of the bull gear,
The first stage compressor is installed on one side of the bull gear, and has a first compressor having a first impeller, a second compressor installed on the other side of the bull gear, and having a second impeller,
And a first suction part is formed at the inlet of the first compressor, and a second suction part is formed at the inlet of the second compressor. The method of claim 3, wherein
The first compressor is rotatably coupled to one end of the first pinion gear shaft for supporting the first pinion gear on one side of the bull gear,
The second compressor is rotatably coupled to one end of the second pinion gear shaft for supporting the second pinion gear on the other side of the bull gear,
The rear stage compressor includes a third compressor rotatably coupled to the other end of the first pinion gear shaft, and a fourth compressor rotatably coupled to the other end of the second pinion gear shaft. The method of claim 3, wherein
The first compressor and the second compressor are connected to the pipe to distribute and suck the fluid from the outside, and to distribute and discharge the flow rate of the compressed fluid. 3. The method of claim 2,
And the heat exchanger is an aftercooler installed at least one downstream of the after compressor. A compression device having at least one suction part for sucking the fluid, a compression part for compressing the fluid introduced from the suction part in multiple stages, a discharge part for discharging the compressed air, and a heat exchanger provided at an outlet side of the compression part;
A storage unit connected to the compression device and configured to receive the high pressure fluid compressed from the compression device;
An expander driven by waste gas generated from the compressed fluid to the reservoir; And
And an external compression unit connected to the rotating shaft with respect to the expander to generate a high pressure fluid. The method of claim 7, wherein
The compression unit includes a first stage compressor coupled to an increaser having at least one gear, and at least one rear stage compressor installed at a rear end of the first stage compressor,
The heat exchanger is an energy saving system using a compression device that is an aftercooler installed between the rear compressor and the storage. The method of claim 7, wherein
The external compression unit,
A steam suction unit for introducing low pressure steam from the outside;
A compression unit for compressing the fluid introduced from the steam suction unit; And
Energy saving system using a compression device comprising a; steam outlet for discharging the compressed air. The method of claim 7, wherein
The compression unit includes a first stage compressor coupled to an increaser having at least one gear, and at least one rear stage compressor installed at a rear end of the first stage compressor,
The heat exchanger is an aftercooler installed between the rear stage compressor and the storage unit,
The one end of the shaft of the gear box is connected to the electric motor provided in the speed increaser,
An energy saving system using a compression device connected between the expander and the external compression unit so that the other end of the shaft of the gear box provides the same rotation speed.

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