CN102046971A - Method and device for conveying compressed gas - Google Patents
Method and device for conveying compressed gas Download PDFInfo
- Publication number
- CN102046971A CN102046971A CN2009801194660A CN200980119466A CN102046971A CN 102046971 A CN102046971 A CN 102046971A CN 2009801194660 A CN2009801194660 A CN 2009801194660A CN 200980119466 A CN200980119466 A CN 200980119466A CN 102046971 A CN102046971 A CN 102046971A
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- China
- Prior art keywords
- gas
- pipe section
- compression
- high pressure
- compressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F04B25/00—Multi-stage pumps
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
-
- 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
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
-
- 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
-
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
-
- 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
Abstract
The invention relates to a method and device for conveying compressed gas into at least two mutually separate pipeline sections (6, 7), wherein gas is compressed and conveyed into a first pipeline section (6), a connection is subsequently produced between the two pipeline sections (6, 7) such that the compressed gas flows from the first pipeline section (6), on account of the excess pressure, into a second pipeline section (7), and gas from the first pipeline section (6) is subsequently compressed and conveyed into the second pipeline section (7).
Description
Technical field
The present invention relates to a kind of be used for will compression gas delivery to the method for at least two separated pipe sections and a kind of device of gas delivery at least two separated pipe sections with compression, described device has at least one compressor, each described compressor is connected with pipe section by a gas transmission pipeline respectively, wherein, two gas transmission pipelines have a valve respectively.
Background technique
In order to detect the sealing of pipeline, particularly pipeline, carry out pressure testing/applied voltage test (Abdr ü cken) to each single section,, be that pressure is maintained promptly, the pressure loss still occurred with the gas fill pipe section of compression and through determining after the time period of determining.
Up to now common gas, particularly air are imported in first pipe section for this reason, implement performing leak test in first pipe section, then the gas that will compress in high pressure range usually under high pressure, promptly exporting to the surrounding environment under about pressure of 100 to 150bar.Carry out identical operations for second pipe section and other pipe section.Here shortcoming particularly in, for the employed energy consumption of pressurized air after sealing test finishes not markon's land used be discharged in the surrounding environment.
By the known a kind of special compression device of DE 93 16 738U1, utilize this compression device to detect pipeline with regard to its sealing by pressure testing.
In WO 2007/079514A1, in another case, promptly under the situation of having keeped in repair with the natural gas line that is in the gas filling pressure under, suggestion is provided with multistage pressure piston formula compressor for the by-pass line between prior separated each pipe section, therefore gas can be transported to another pipe section from a pipe section.
Summary of the invention
Relative therewith, the objective of the invention is to, a kind of method and device that starts described type is provided, utilize this method and device to make it possible to pipe section, particularly pipeline are carried out energy-optimised pressure testing.
This purpose so realizes according to the present invention, pressurized gas also is transported in first pipe section, then set up two connections between the pipe section, thereby the gas of compression compresses the gas from first pipe section subsequently and is transported in second pipe section because overvoltage overflows to second pipe section from first pipe section.Therefore according to pressing method of the present invention, at first fill first pipe section with the gas of compression, after this detecting the sealing in this pipe section, is not that gas is exported in the surrounding environment as common so far, but is used at least one other pipe section is continued to detect.Can at first utilize the overvoltage that is transported to the gas in first pipe section for this reason, when adjust to same stress level basically in two pipe sections after, the gas that just will also be in first pipe section is extracted out from this pipe section and is carried it in second pipe section under pressure.Can realize about 1: 3 energy saving with respect to known so far method thus, can realize that equally the time of half is saved approximately.
Aspect the pressure testing of two special energy-efficients of pipe section (efficiency), advantageously at first in a low pressure range, gas is delivered directly in first pipe section, then in a high pressure range, precompressed gas in described low pressure range is carried out at least once further compression, just the gas of compression is imported in the first pressure piping section afterwards.
Here preferably, in described low pressure range, realize gas compression between 5bar and the 30bar, particularly be compressed to and be essentially 15bar, and in described high pressure range, realize between gas compression to 70 and the 150bar, particularly be compressed to and be essentially 100bar.Certainly the compression in low pressure and particularly high pressure range can single-stage or multistage ground (promptly in a plurality of active chambers) carry out.Guaranteed thus in low pressure range and the compression of in high pressure range, comparing the high energy efficiency that is about 1: 2, reached the stress level of about 100bar common in the pressurized gas pipeline in addition.
If after gas freely overflows to second pipe section from first pipe section, in first pipe section, still at first after high pressure compressed, be transported in second pipe section by precompressed gas, and after the gas pressure level in first pipe section reduces, in order to deliver gas in second pipe section, at first in low pressure range, gas is being compressed before the high pressure compressed, then realize special high energy efficiency ground gas transfer from first pipe section, and fill at least one second pipe section.Basically this transfer can have three phases, wherein, and at first because different stress levels has been guaranteed free overflow.Then, promptly two stress levels in two pipe sections are basically after the balance, can directly carry out the high pressure compressed of high energy efficiency, to deliver gas in second pipe section, this is because the stress level still higher (for example being approximately 50bar) in first pipe section.After can't carrying out the direct high pressure compressed of high energy efficiency again, after promptly the stress level in first pipe section obviously reduces, just at first in low pressure range, also then in high pressure range, (sucking from surrounding environment) gas is compressed.
The device that starts described type is characterised in that each gas transmission pipeline interconnects by the by-pass line with valve.By between compressor and at least two pipe sections, a by-pass line with valve that has the gas transmission pipeline of valve and each gas transmission pipeline of connection is set being set respectively, can be optionally, promptly according to the setting of valve, at first deliver gas in first pipe section, then can open each valve, thereby the free overflow can realizing from first pipe section to second pipe section can be brought in second pipe section via the air that another gas transmission pipeline will pump out from first pipe section at last.Aspect the pressure testing of pipe section being carried out high energy efficiency, obtained thus with described method in front in identical advantage, therefore for fear of repeat can be with reference to the explanation of front.
In addition, advantageously, at least one low pressure compression stage and high pressure compressed level are set aspect the pressure testing of at least two pipe sections being carried out high energy efficiency, they interconnect by the compression pipe with valve.Low pressure stage and high pressure stage itself also can be configured to multistage.Thus,, then only use the high pressure compressed level, and after the decline of the stress level in first pipe section, be transformed into low pressure and high pressure compressed as long as in first pipe section, also there is enough precompressed gas.This moment can be from surrounding environment or from the first pipe section intake-gas.
For can be at first with precompressed gas delivery in low pressure range in first pipe section, in order to stop the gas that will in low pressure stage, compress directly to be fed in first gas transmission pipeline selectively, and for therefore with precompressed gas delivery in high pressure stage, advantageously, branch out the low-pressure connection tube road with valve between low pressure compression stage and compressor pipeline valve, this low-pressure connection tube road is connected with first gas transmission pipeline.
If the high pressure compressed level is connected with second gas transmission pipeline by the high pressure connecting tube with valve at outlet side, then can prevent to enter the exit region of high pressure compressed level at gas gas (partly) of overflow when first pipe section overflows to second pipe section.
Advantageously, low pressure compression stage and high pressure compressed level have common driver element aspect the drive unit simple in structure of low pressure compression stage and high pressure compressed level, and each compression stage is connected with this driver element by a switchable coupling connection part respectively.Can activate low pressure stage and high pressure stage selectively by means of switchable coupling connection part thus.Can certainly two special driving unit be set for low pressure compression stage and high pressure compressed level.
Screw compressor preferably is set as the low pressure compression stage, and the Reciprocting piston compressor that one or more levels is set is as the high pressure compressed level.The type of compressor that can certainly use other is as low pressure compression stage and high pressure compressed level.Therefore can for example use piston compressor with a plurality of cylinders and other the blower with a plurality of active chambers, screw compressor, turbocompressor or vacuum compressor and similar device.
Description of drawings
Describe the present invention in detail by means of the preferred embodiment shown in the accompanying drawing below, but the present invention is limited to these embodiments in no instance.Particularly in the accompanying drawings:
The circuti diagram of the schematically illustrated compression system of Fig. 1, this compression system have two pipe sections and two compression stages with a common driver element, and wherein each valve of compression system connects like this, make to deliver gas to first pipe section from low pressure stage;
Fig. 1 a illustrates the circuti diagram similar to Fig. 1, is used for two special driving unit of two compression stages but wherein be provided with;
Fig. 2 schematically shows the circuti diagram corresponding to Fig. 1, but wherein carries out low pressure compression and high pressure compressed before the gas with compression imports first pipe section;
Fig. 2 a illustrates the circuti diagram corresponding to Fig. 2, but has the special driving unit that is used for each compression stage;
Fig. 3 schematically shows the circuti diagram corresponding to Fig. 1 and 2, but wherein gas only is freely to overflow to second pipe section from first pipe section;
Fig. 3 a illustrates the circuti diagram corresponding to Fig. 3, but has the special driving unit that is used for each compression stage;
Fig. 4 schematically shows the circuti diagram corresponding to Fig. 1 to 3, and wherein, precompressed gas enters the high pressure compressed level and import second pipe section after high compression in first pipe section;
Fig. 4 a illustrates the circuti diagram corresponding to Fig. 4, but has the special driving unit that is used for each compression stage;
Fig. 5 illustrates the circuti diagram according to Fig. 1 to 4, and wherein, the gas of importing in second pipe section at first compresses in low pressure stage, and then compresses in high pressure stage subsequently; And
Fig. 5 a illustrates the circuti diagram corresponding to Fig. 5, but is provided with the special driving unit that is used for each compression stage.
Embodiment
Compressor 1 with low pressure stage 2 and high pressure stage 3 has been shown among Fig. 1 and Fig. 1 a.Compressor 1 is connected with first pipe section 6 by first gas transmission pipeline 4 and is connected with second pipe section 7 by second gas transmission pipeline 5.In gas transmission pipeline 4,5, be respectively equipped with stop valve 8 or 9, thereby can control inlet stream and blast air selectively by two gas transmission pipelines 4,5.Two gas transmission pipelines 4,5 interconnect by by-pass line 10, and this by-pass line has stop valve equally, and promptly bypass valve 11.
Two compression stages, promptly low pressure compression stage 2 and high pressure compressed level 3 interconnect by compression pipe 12, are provided with stop valve in the compression pipe equally, and promptly compression valve 13.Screw compressor 2 is set in an illustrated embodiment as low pressure compression stage 2, and Reciprocting piston compressor is set as high pressure compressed level 3, they have a common driver element 14 in the embodiment shown in Fig. 1.In order optionally low pressure stage 2 or high pressure stage 3 to be connected on the driver element 14, be respectively equipped with switchable coupling connection part 15 or 16.In the working position shown in Figure 1, coupling connection part 15 is in the state of coupling connection, thereby drives low pressure stage 2 by driver element 14; Opposite coupling connection part 16 is in taking off the position of coupling, so high pressure compressed level 3 is not worked.
Replace a common driver element 14 that has switchable coupling connection part 15,16, also can be provided for (two) special driving unit 14 ', 14 of low pressure compression stage 2 and high pressure compressed level 3 " (a) referring to Fig. 1; In the working position shown in Fig. 1 a, corresponding to Fig. 1, driver element 14 ' is in the work, and driver element 14 in contrast " do not work.
Be provided with safety check 17 in this external compression pipe 12, this safety check only allows through-flow towards the direction of first pipe section 6 or high pressure compressed level 3.Go out low-pressure connection tube road 19 from compression pipe 12 top sets between this external safety check 17 and the compression pipe valve 13, this low-pressure connection tube road feeds in first gas transmission pipeline 4.Low-pressure connection tube road 19 also has stop valve 20.
High pressure compressed level 3 is connected with second gas transmission pipeline 5 by high pressure connecting tube 21 at outlet side.Also be provided with stop valve 22 in the high pressure connecting tube 21.
In the working position shown in Fig. 1 and the 1a, the screw compressor that is set to low pressure compression stage 2 drives by driver element 14 or 14 ', thereby sucks ambient air and be delivered directly in first pipe section 6 by the air that the valve 20,8 opened will (promptly the highest about 15bar) compresses in low pressure range.
After existence in first pipe section utilizes low pressure compression stage 2 attainable stress levels, stop valve 20,13,22 and 11 is switched, thereby be set in the Reciprocting piston compressor of high pressure stage 3 by the importing of compression connecting tube 12 precompressed airs, in this compressor, realize the high pressure compressed (referring to Fig. 2,2a) of about 100bar.
Therefore stop valve 13,22,11 and 8 is switched to its open position, on the contrary, the same with stop valve 9 in second gas transmission pipeline 5, stop valve 20 is closed.Therefore the screw compressor that is set to low pressure stage 2 sucks air from surrounding environment, with air precompression in screw compressor, then carry out high pressure compressed in the Reciprocting piston compressor of high pressure stage 3; Follow compressed air delivery in first pipe section 6.
In case finish the pressure testing to first pipe section 6, promptly the performing leak test of first pipe section 6 finishes, and makes the air of high compression transfer to (referring to Fig. 3,3a) second pipe section 7 from first pipe section 6.Reciprocting piston compressor in screw compressor in low pressure stage 2 and the high pressure stage 3 breaks away from coupling connection or driver element 14,14 ', 14 with driver element 14 here " stop.
For the air with high compression directly shifts from first pipe section 6, the valve 11 in valve in the gas transmission pipeline 4,58,9 and the by-pass line 10 is placed its open position; Valve 20 in the low-pressure connection tube road 19 and the valve 22 in the high pressure connecting tube 21 are positioned at its closed position on the contrary.Therefore the air of high compression overflows to second pipe section 7 from the pipe section 6 with obviously higher stress level, adjusts to identical stress level basically until two pipe sections 6,7, for example about 50bar.
As shown in Fig. 4 and 4a, after in pipe section 6,7, adjusting to identical stress level, stop valve 11 in the by-pass line 10 is closed, valve 20, the valve 13 in the compression pipe 12 and the stop valve 22 in the high pressure connecting tube 21 in the low-pressure connection tube road 19 are opened, thereby in first pipe section 6 still under about 50bar for example precompressed gas be connected on the driver element 14 or its driver element 14 " in the high pressure compressed level 3 that is activated by high pressure compressed, be transported in second pipe section 7 by gas transmission pipeline 5 then.
Therefore in this job step, can cancel the precompression of the gas that is undertaken by low pressure compression stage 2, and will still be arranged in the gas continuation use of first pipe section 6 so that second pipe section 7 is carried out pressure test for energy-optimised.
Stress level in first pipe section 6 only is reduced to no longer can realize effective high pressure compressed by means of the compression by the Reciprocting piston compressor in the high pressure compressed level 3, final by low pressure compression stage 2 suction ambient airs, this precompressed air is high compression in high pressure compressed level 3 then, and under about pressure of 100 to 150bar, importing second pipe section 7, so that this pipe section is carried out pressure testing by high pressure connecting tube 21, airflow pipe 5 pressurized air with high compression.In addition as shown in Fig. 5 and 5a, valve 8 in the gas transmission pipeline 4 and the valve 20 in the low-pressure connection tube road 19 are closed, and be arranged on screw compressor in the low pressure compression stage 2 and the Reciprocting piston compressor in the high pressure compressed level 3 be coupled to equally on the driver element 14 (perhaps two driver elements 14 ', 14 " work; See Fig. 5 a).
Can realize pressure testing thus in the mode of high energy efficiency to a plurality of pipe sections 6,7.Certainly the pressurized air in importing second pipe section 7 can be used for the pressure testing of another pipe section equally by previously described method and mode.The opening and closing of stop valve 8,9,11,13,20,22 can manually realize or control automatically and regulate.Essence of the present invention only is, can carry out pressure testing at least two pipe sections, particularly pipeline by aforesaid method and aforesaid device in the mode of high energy efficiency with respect to known system.
Claims (10)
1. be used for the gas delivery of compression is arrived the method for at least two separated pipe sections (6,7), it is characterized in that, gas is compressed, and deliver gas in first pipe section (6), then between two pipe sections (6,7), connect, thereby after this gas of compression compress the gas from first pipe section (6), and be transported in second pipe section (7) because overvoltage overflows to from first pipe section (6) in second pipe section (7).
2. method according to claim 1, it is characterized in that, at first in a low pressure range, gas is delivered directly in first pipe section (6), then in a high pressure range, precompressed gas in low pressure range is carried out at least once further compression, then with the gas delivery of compression in first pipe section (6).
3. method according to claim 2, it is characterized in that, in described low pressure range, realize between gas compression to 5 and the 30bar, particularly be compressed to and be essentially 15bar, and in described high pressure range, realize particularly being compressed to and being essentially 100bar between gas compression to 70 and the 150bar.
4. according to claim 2 or 3 described methods, it is characterized in that, after gas freely overflows to second pipe section (7) from first pipe section (6), to in first pipe section (6), at first after high pressure compressed, be transported in second pipe section (7) by still precompressed gas, after the stress level of the gas in first pipe section (6) descends, in order to deliver gas in second pipe section (7), at first in described low pressure range, gas is being compressed before the high pressure compressed at least.
5. be used for the gas delivery of compression is arrived the device of at least two separated pipe sections (6,7), described device has at least one compressor (1), described compressor is connected with pipe section (6,7) by a gas transmission pipeline (4,5) respectively, wherein two gas transmission pipelines (4,5) have a valve (8,9) respectively, it is characterized in that gas transmission pipeline (4,5) interconnects by the by-pass line (10) with valve (11).
6. device according to claim 5 is characterized in that, is provided with at least one low pressure compression stage (2) and high pressure compressed level (3), and described low pressure compression stage and high pressure compressed level interconnect by the compression pipe (12) with valve (13).
7. device according to claim 6 is characterized in that, branches out the have valve low-pressure connection tube road (19) of (20) between low pressure compression stage (2) and compression pipe valve (13), and described low-pressure connection tube road is connected with first gas transmission pipeline (4).
8. according to claim 6 or 7 described devices, it is characterized in that high pressure compressed level (3) is connected with second gas transmission pipeline (5) by the high pressure connecting tube (21) with valve (22) at outlet side.
9. according to each described device in the claim 6 to 8, it is characterized in that, low pressure compression stage (2) and high pressure compressed level (3) have common driver element (14), and low pressure compression stage (2) is connected with described driver element by a switchable coupling connection part (15,16) respectively with high pressure compressed level (3).
10. according to each described device in the claim 6 to 9, it is characterized in that, screw compressor is set as low pressure compression stage (2), and Reciprocting piston compressor is set as high pressure compressed level (3).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA854/2008 | 2008-05-28 | ||
| AT0085408A AT506905B1 (en) | 2008-05-28 | 2008-05-28 | METHOD AND DEVICE FOR PROMOTING GAS |
| PCT/AT2009/000217 WO2009143547A1 (en) | 2008-05-28 | 2009-05-25 | Method and device for conveying compressed gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102046971A true CN102046971A (en) | 2011-05-04 |
| CN102046971B CN102046971B (en) | 2013-09-11 |
Family
ID=40875020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801194660A Active CN102046971B (en) | 2008-05-28 | 2009-05-25 | Method and device for conveying compressed gas |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2300713B1 (en) |
| CN (1) | CN102046971B (en) |
| AT (2) | AT506905B1 (en) |
| EA (1) | EA017921B1 (en) |
| PL (1) | PL2300713T3 (en) |
| WO (1) | WO2009143547A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094188A (en) * | 2019-04-09 | 2019-08-06 | 中国石油集团济柴动力有限公司成都压缩机分公司 | A kind of stepped voltage regulation system and method for supercritical carbon dioxide compressibility |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4326988A1 (en) * | 2021-06-24 | 2024-02-28 | Apple Inc. | Shared compressor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2218565A (en) * | 1937-05-01 | 1940-10-22 | Vickers Inc | Compound positive displacement pump circuit |
| SE369948B (en) * | 1969-12-03 | 1974-09-23 | I Soeyland | |
| US4526513A (en) * | 1980-07-18 | 1985-07-02 | Acco Industries Inc. | Method and apparatus for control of pipeline compressors |
| US5577390A (en) * | 1994-11-14 | 1996-11-26 | Carrier Corporation | Compressor for single or multi-stage operation |
-
2008
- 2008-05-28 AT AT0085408A patent/AT506905B1/en active
-
2009
- 2009-05-25 EA EA201071383A patent/EA017921B1/en unknown
- 2009-05-25 EP EP09753311A patent/EP2300713B1/en active Active
- 2009-05-25 CN CN2009801194660A patent/CN102046971B/en active Active
- 2009-05-25 AT AT09753311T patent/ATE555307T1/en active
- 2009-05-25 WO PCT/AT2009/000217 patent/WO2009143547A1/en active Application Filing
- 2009-05-25 PL PL09753311T patent/PL2300713T3/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094188A (en) * | 2019-04-09 | 2019-08-06 | 中国石油集团济柴动力有限公司成都压缩机分公司 | A kind of stepped voltage regulation system and method for supercritical carbon dioxide compressibility |
| CN110094188B (en) * | 2019-04-09 | 2021-06-01 | 中国石油天然气集团有限公司 | Grading pressure regulating system and method of supercritical carbon dioxide compression system |
Also Published As
| Publication number | Publication date |
|---|---|
| PL2300713T3 (en) | 2012-10-31 |
| EA201071383A1 (en) | 2011-04-29 |
| ATE555307T1 (en) | 2012-05-15 |
| EP2300713A1 (en) | 2011-03-30 |
| EP2300713B1 (en) | 2012-04-25 |
| CN102046971B (en) | 2013-09-11 |
| AT506905B1 (en) | 2011-03-15 |
| WO2009143547A1 (en) | 2009-12-03 |
| EA017921B1 (en) | 2013-04-30 |
| AT506905A1 (en) | 2009-12-15 |
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