CN203239590U - Centrifugal compressor unit of large-size LNG (Liquefied Natural Gas) device - Google Patents
Centrifugal compressor unit of large-size LNG (Liquefied Natural Gas) device Download PDFInfo
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- CN203239590U CN203239590U CN 201320162333 CN201320162333U CN203239590U CN 203239590 U CN203239590 U CN 203239590U CN 201320162333 CN201320162333 CN 201320162333 CN 201320162333 U CN201320162333 U CN 201320162333U CN 203239590 U CN203239590 U CN 203239590U
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Abstract
The utility model provides a centrifugal compressor unit of a large-size LNG (Liquefied Natural Gas) device. The centrifugal compressor unit comprises a low-pressure cylinder which is used for primarily compressing refrigerant, a high-pressure cylinder which is used for again compressing the refrigerant which is primarily compressed by the low-pressure cylinder, a driving machine which is used for providing power for the low-pressure cylinder and the high-pressure cylinder. The driving machine is connected with one end of the low-pressure cylinder through a first coupling. The other end of the low-pressure cylinder is connected with the high-pressure cylinder through a second coupling. The large-size LND mixing refrigerant centrifugal compressor unit provided by the utility model consists of large-diameter and large-capacity centrifugal compressors and improves the production capacity of single equipment for LNG. Moreover, compared with the existing unit which is formed by parallel connected small-size units, the equipment of the unit is reduced, the unit can be designed and put into operation rapidly, the unnecessary loss is reduced and the efficiency of the entire unit is improved by approximate 3 percent.
Description
Technical field
The utility model relates to compressor field, particularly a kind of Large LNG device Systems of Centrifugal Compressor Unit.
Background technique
LNG Liquefied natural gas is called for short LNG(Liquefied Natural Gas), it is clean energy resource the safest in the world today, that be fit to long-distance transportation and can directly utilize.In the liquefaction process of LNG, the mix refrigerant compressor is one of nucleus equipment.The characteristics such as this type of compressor has pressure ratio large, and pressure-bearing is high, and inlet temperature is low.
Along with improving constantly of LNG industry production capacity.The technique unit of flow adopted many centrifugal compressor parallel connections to satisfy broad-minded requirement more in the past, and the method floor space is large, pipeline connects complicated, and needs a plurality of prime mover driven, and number of devices is many, the infrastructural project amount is large, goes into operation slow, and later maintenance cost is high.
The model utility content
Technical problem to be solved in the utility model provide a kind of simple in structure, be easy to go into operation, the Large LNG device Systems of Centrifugal Compressor Unit of efficient energy-saving.
For solving the problems of the technologies described above, the utility model provides a kind of Large LNG device Systems of Centrifugal Compressor Unit, the high-pressure cylinder that comprises low pressure (LP) cylinder that refrigeration agent is compressed for the first time, the refrigeration agent after the first compression of described low pressure (LP) cylinder is compressed again, and provide the driving machine of power for described low pressure (LP) cylinder and high-pressure cylinder, described driving machine links to each other with described low pressure (LP) cylinder one end by the first coupling, and the described low pressure (LP) cylinder the other end links to each other with described high-pressure cylinder by the second coupling.
Further, described low pressure (LP) cylinder is level Four formula horizonally split compressor, the air inlet air duct of described level Four formula horizonally split compressor and exhaust duct are positioned at the split top of level Four formula horizonally split compressor, four impellers of described level Four formula horizonally split compressor are 3 d impeller, the size of described impeller reel and shrouding disc improves, the diameter of impeller is increased to 1300-1500mm, can bear higher intensity.
Further, described high-pressure cylinder is six grades of vertical subdivision centrifugal compressors of formula, the air inlet air duct of described six grades of vertical subdivision centrifugal compressors of formula and exhaust duct are positioned at the top of six grades of vertical subdivision centrifugal compressors of formula, six impellers of described six grades of vertical subdivision centrifugal compressors of formula are 3 d impeller, the size of described impeller reel and shrouding disc improves, the diameter of impeller is increased to 1000-1200mm, can bear higher intensity.
Further, described driving machine is motor, and described motor power (output) provides more powerful power can for described low pressure (LP) cylinder and high-pressure cylinder greater than 50000KW.
The Large LNG device Systems of Centrifugal Compressor Unit that the utility model provides has following characteristics:
1, this compressor bank is comprised of low pressure (LP) cylinder and two large centrifugal compressors of high-pressure cylinder, after mix refrigerant compresses through low pressure (LP) cylinder, entering high-pressure cylinder compresses again, then enter other technological processes, the centre does not have cooling procedure, compare Energy Intensity Reduction 3% with the compressor bank with a plurality of light duty compressor parallel connections of Isoquant in the past.
2, improved the size of impeller in the Systems of Centrifugal Compressor Unit, impeller diameter has been increased to 1000-1500mm, can bear higher intensity, made impeller adiabatic efficiency improve 1.15～1.32%.
3, reduce the usage quantity of equipment in the same unit, reduced input cost, shortened production cycle, improved overall efficiency.
Description of drawings
The structural scheme of mechanism of the Large LNG device Systems of Centrifugal Compressor Unit that Fig. 1 provides for the utility model embodiment.
Embodiment
Referring to Fig. 1, a kind of Large LNG device Systems of Centrifugal Compressor Unit that the utility model embodiment provides comprises driving machine 1, low pressure (LP) cylinder 2 and high-pressure cylinder 3; Driving machine 1 links to each other with low pressure (LP) cylinder 2 one ends by the first coupling 5, and low pressure (LP) cylinder 2 the other ends link to each other with high-pressure cylinder 3 by the second coupling 6; Low pressure (LP) cylinder 2 and high-pressure cylinder 3 are fixed on the public base 4, and driving machine 1 is motor, and its power is greater than 50000KW, for low pressure (LP) cylinder 2 and high-pressure cylinder 3 provide power, whole unit by oil pipe 7 to each equipment fuel feeding.
Wherein, low pressure (LP) cylinder 2 is level Four formula horizonally split compressor, the air inlet air duct 21 of level Four formula horizonally split compressor 2 and exhaust duct 22 are positioned at the split top of level Four formula horizonally split compressor 2, four impellers of level Four formula horizonally split compressor 2 are 3 d impeller, and the diameter of impeller is 1300-1500mm.Form the gradual shrinkage runner by dividing plate in the stator of level Four formula horizonally split compressor 2, be provided with Diffuser in the runner, utilize the rotation of impeller, the Conversion of Energy that driving machine is driven is the pressure energy of gas, and through the Diffuser supercharging mix refrigerant is compressed for the first time, mix refrigerant enters further compression in the high-pressure cylinder 3 after through first compression.
High-pressure cylinder 3 is six grades of vertical subdivision compressors of formula, the air inlet air duct 31 of six grades of vertical subdivision centrifugal compressors 3 of formula and exhaust duct 32 are positioned at the top of six grades of vertical subdivision centrifugal compressors 3 of formula, six impellers of six grades of vertical subdivision centrifugal compressors 3 of formula are 3 d impeller, and the diameter of impeller is 1000-1200mm.Mix refrigerant after 2 compressions of level Four formula horizonally split compressor enters six grades of vertical subdivision compressors 3 of formula and carries out secondary compression, mix refrigerant is every just once compressed through an impeller, make gas pressure reach the force value of expection through multistage compression, then mix refrigerant enters other technological processes, and the centre does not have other cooling procedures.
A kind of Large LNG mix refrigerant Systems of Centrifugal Compressor Unit that the utility model provides, by major diameter, the atm number centrifugal compressor forms, and has improved the throughput of LNG Liquefied natural gas single equipment.And compare with the unit of in the past minicomputer use in parallel, reduced the equipment of whole unit, design is gone into operation fast, has reduced unnecessary mechanical loss, and whole unit efficiency improves about 3%.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to example the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. Large LNG device Systems of Centrifugal Compressor Unit, it is characterized in that: the high-pressure cylinder that comprise low pressure (LP) cylinder that refrigeration agent is compressed for the first time, the refrigeration agent after will compressing for the first time compresses again, and provide the driving machine of power for described low pressure (LP) cylinder and high-pressure cylinder, described driving machine links to each other with described low pressure (LP) cylinder one end by the first coupling, and the described low pressure (LP) cylinder the other end links to each other with described high-pressure cylinder by the second coupling.
2. Systems of Centrifugal Compressor Unit according to claim 1, it is characterized in that: described low pressure (LP) cylinder is level Four formula horizonally split compressor, the air inlet air duct of described level Four formula horizonally split compressor and exhaust duct are positioned at the split top of level Four formula horizonally split compressor, four impellers of described level Four formula horizonally split compressor are 3 d impeller, and the diameter of described impeller is 1300-1500mm.
3. Systems of Centrifugal Compressor Unit according to claim 1, it is characterized in that: described high-pressure cylinder is six grades of vertical subdivision centrifugal compressors of formula, the air inlet air duct of described six grades of vertical subdivision centrifugal compressors of formula and exhaust duct are positioned at the top of six grades of vertical subdivision centrifugal compressors of formula, six impellers of described six grades of vertical subdivision centrifugal compressors of formula are 3 d impeller, and the diameter of described impeller is 1000-1200mm.
4. Systems of Centrifugal Compressor Unit according to claim 1, it is characterized in that: described driving machine is motor, and described motor power (output) is greater than 50000KW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162333 CN203239590U (en) | 2013-04-03 | 2013-04-03 | Centrifugal compressor unit of large-size LNG (Liquefied Natural Gas) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162333 CN203239590U (en) | 2013-04-03 | 2013-04-03 | Centrifugal compressor unit of large-size LNG (Liquefied Natural Gas) device |
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| Publication Number | Publication Date |
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| CN203239590U true CN203239590U (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320162333 Expired - Fee Related CN203239590U (en) | 2013-04-03 | 2013-04-03 | Centrifugal compressor unit of large-size LNG (Liquefied Natural Gas) device |
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| CN (1) | CN203239590U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167205A (en) * | 2017-12-25 | 2018-06-15 | 沈阳透平机械股份有限公司 | LNG compressors are with pressure to start the method for determining |
| CN110809702A (en) * | 2017-05-10 | 2020-02-18 | 诺沃皮尼奥内技术股份有限公司 | Compressor train arrangement |
-
2013
- 2013-04-03 CN CN 201320162333 patent/CN203239590U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809702A (en) * | 2017-05-10 | 2020-02-18 | 诺沃皮尼奥内技术股份有限公司 | Compressor train arrangement |
| CN108167205A (en) * | 2017-12-25 | 2018-06-15 | 沈阳透平机械股份有限公司 | LNG compressors are with pressure to start the method for determining |
| CN108167205B (en) * | 2017-12-25 | 2019-09-17 | 沈阳透平机械股份有限公司 | The starting with pressure of LNG compressor determines method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20210403 |
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| CF01 | Termination of patent right due to non-payment of annual fee |