WO2008122175A1 - Procédé et système de compression étagée pour compresseur à piston alternatif - Google Patents

Procédé et système de compression étagée pour compresseur à piston alternatif Download PDF

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Publication number
WO2008122175A1
WO2008122175A1 PCT/CN2007/070004 CN2007070004W WO2008122175A1 WO 2008122175 A1 WO2008122175 A1 WO 2008122175A1 CN 2007070004 W CN2007070004 W CN 2007070004W WO 2008122175 A1 WO2008122175 A1 WO 2008122175A1
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WO
WIPO (PCT)
Prior art keywords
stage
reciprocating compressor
piston reciprocating
output
pneumatic ball
Prior art date
Application number
PCT/CN2007/070004
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English (en)
Chinese (zh)
Inventor
Chunsheng Jiang
Original Assignee
Chunsheng Jiang
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chunsheng Jiang filed Critical Chunsheng Jiang
Publication of WO2008122175A1 publication Critical patent/WO2008122175A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to a gas compression technique, and more particularly to a piston reciprocating compressor step compression method and system. Background technique
  • Piston reciprocating compressors are widely used in petroleum, natural gas and chemical industries.
  • a common driving method for piston reciprocating compressors is motor drive.
  • the rated output power of the motor is slightly larger than the input power required by the piston reciprocating compressor.
  • the piston reciprocating compressor is usually operated according to the user's requirements. Under working conditions (inlet pressure, outlet pressure, gas flow, etc.), different series compression stages are designed. The higher the compression stage, the greater the motor output power required. For example, natural gas filling, when the natural gas inlet pressure is 0. 8Mpa, the outlet pressure of the filling tank after compression by the piston reciprocating compressor is 25 MPa, and the gas flow rate is 2220M7h.
  • the compression stage is continuously operated from the first stage to the fourth stage, the gas with an outlet pressure of 25 MPa is directly charged into the user's gas storage container, and the power consumed is 320 kW. Since the pressure in the tank is low at the beginning of the refueling of the user's gas tank, the four-stage compressor is used in series at the same time, and the gas is added to the gas tank at the highest pressure, which is undoubtedly a waste and will waste a lot of power. Consumption.
  • the present invention provides a piston reciprocating compressor step compression method and system.
  • the step compression method for the piston reciprocating compressor of the present invention comprises:
  • each stage piston compressor is provided with a separate intake line and an outlet line, and the control system connected to the output line is connected to a series system capable of converting the compression system. ;
  • the piston reciprocating compressor is at a pressure of 0.9 times higher than the outlet rated pressure of the first stage of the piston reciprocating compressor, and the output pressure is 0.9 times higher than the outlet rated pressure of the first stage of the piston reciprocating compressor.
  • the first stage and the second stage are connected in series, and are output by the second stage;
  • the piston reciprocating compressor is 9.0 times higher than the outlet rated pressure of the second stage of the piston reciprocating compressor, and the output pressure is 0.9 times higher than the outlet rated pressure of the second stage of the piston reciprocating compressor.
  • the first stage, the second stage and the third stage are connected in series, and are outputted by the third stage;
  • the first stage of the piston reciprocating compressor When the output pressure is lower than the outlet rated pressure of the fourth stage of the piston reciprocating compressor and is higher than 0.9 times of the outlet rated pressure of the third stage of the piston reciprocating compressor, the first stage of the piston reciprocating compressor The second, third and fourth stages are connected in series, and are output by the fourth stage;
  • the change of the series mode is controlled by the PLC.
  • the PLC detects the pressure at each point through the pressure sensor, and switches the on/off of each valve according to the above pressure interval to form different series modes, and controls the drive motor through a frequency converter to determine the drive according to different series modes.
  • the input power of the motor When the output pressure is lower than the outlet rated pressure of the fourth stage of the piston reciprocating compressor and is higher than 0.9 times of the outlet rated pressure of the third stage of the piston reciprocating compressor, the first stage of the piston reciprocating compressor The second, third and fourth stages are connected in series, and are output by the fourth stage;
  • the change of the series mode is controlled by the PLC
  • the piston reciprocating compressor step compression system of the invention comprises a piston reciprocating compressor and various input pipelines and output pipelines, pneumatic ball valves, electromagnetic reversing valves, coolers, gas-liquid separators, recovery tanks, pressure reducing valves, and drives
  • the motor, the frequency converter, the PLC, the first-stage input pipeline is connected to the air inlet of the first-stage cylinder of the piston reciprocating compressor via an input pneumatic ball valve, and the first-stage output pipeline connected by the first-stage cylinder outlet port passes through the first-stage output pneumatic a ball valve is connected to the gas-liquid separator, and is connected to an intake port of the secondary cylinder of the piston reciprocating compressor via a primary branch pneumatic ball valve, and the secondary output line connected to the secondary cylinder outlet port passes through the secondary output a pneumatic ball valve is connected to the gas-liquid separator, and is connected to a gas inlet of a three-stage cylinder of the piston reciprocating compressor via a two-stage pneumatic ball valve, and the three-stage output pipeline connected
  • a one-way valve is connected in series to the connecting line between the output pneumatic ball valve and the gas-liquid separator.
  • the output line between the air outlet of each cylinder of the piston reciprocating compressor and the pneumatic ball valve is connected in series with a cooler and a filter, and a temperature sensor is connected in parallel.
  • the piston reciprocating compressor step compression system of the present invention on the first three stages of the filter, there is a road connection recovery pneumatic ball valve, and the three recovery pneumatic ball valves are connected to the recovery tank, and the recovery tank is connected through a return pressure reducing valve.
  • the intake port of the first stage cylinder of the piston reciprocating compressor, and the three recovered pneumatic ball valves are respectively connected to the auxiliary electromagnetic reversing valve.
  • a branch line is connected to the primary cylinder output line of the piston reciprocating compressor, and is connected to all of the electromagnetic reversing valves by controlling a pressure reducing valve, the recovery tank There is also a branch line connecting all solenoid reversing valves.
  • the piston reciprocating compressor step compression system of the present invention has an input pressure sensor and an input pressure gauge on the inlet line of the inlet port and the input pneumatic ball valve, and an output pressure sensor is arranged on the gas-liquid separator and Output pressure gauge.
  • safety valves are installed on the four output lines, the gas-liquid separator and the recovery tank.
  • FIG. 1 is a schematic view of a step compression system of a piston reciprocating compressor of the present invention
  • FIG. 2 is an electrical connection diagram of a step compression system of a piston reciprocating compressor of the present invention.
  • the piston reciprocating compressor is changed from continuous power consumption of each stage to stepped power consumption. Since the piston reciprocating compressor consumes different amounts of power when compressing the gas, and is superimposed step by step according to the increase of the compression stage, the user's gas storage container is at different inflation pressures when reaching the required gas storage volume. At the point, the time required is different, and the power consumed by the piston reciprocating compressor is different when it is compressed to different inflation pressure points. Therefore, we have devised a new control method to change the piston reciprocating compressor from continuous power consumption to stepped power consumption.
  • the system includes piston reciprocating compressor YS, pneumatic ball valve 4, B, C, electromagnetic reversing valve SV, cooler LQ, gas-liquid separator QYF, recovery tank PV, pressure reducing valve PR, safety valve SRV, check valve CV, pressure sensor PT, temperature sensor TS, drive motor, inverter, PLC;
  • the first input line connected to the air inlet port is connected to the air inlet of the first stage cylinder YS1 of the piston reciprocating compressor YS via the input pneumatic ball valve A1, and the first output line G1 connected to the air outlet of the first stage cylinder YS 1 is connected.
  • the primary filter F1 has one output through the primary output pneumatic ball valve B1 and a one-way valve CV1 connected to the gas-liquid separator QYF, the other branch through the primary branch
  • the pneumatic ball valve A2 is connected to the intake port of the secondary cylinder of the piston reciprocating compressor, and is connected to the recovery tank PV via the first-stage recovery pneumatic ball valve C1; and connected to the primary output line G1 connected to the air outlet of the first-stage cylinder YS1.
  • temperature sensor TS1 After the first cooler LQ1 is connected with safety valve SRV1, before the first-stage output pneumatic ball valve B1 is equipped with main pressure sensor PT11, before the primary branch pneumatic ball valve A2 is connected with pressure sensor PT12;
  • the secondary output line G2 connected to the outlet of the secondary cylinder YS2 is connected in series with the secondary cooler LQ2 and the secondary filter F2, and the secondary filter F2 has an output through the secondary output pneumatic ball valve B2 and a check valve CV2.
  • the other branch is connected to the intake port of the three-stage cylinder of the piston reciprocating compressor via the secondary branch pneumatic ball valve A3, and is connected to the recovery tank PV through the secondary recovery pneumatic ball valve C2;
  • the secondary output line G2 connected to the outlet of the secondary cylinder YS2 is connected with a temperature sensor TS2, a safety valve SRV2 is connected after the secondary cooler LQ2, and a main pressure sensor PT21 is installed in front of the secondary output pneumatic ball valve B2.
  • the pressure sensor PT22 is connected to the front side pneumatic ball valve A3;
  • the three-stage output line G3 connected to the outlet of the three-stage cylinder YS3 is connected in series with the three-stage cooler LQ3 and the third-stage filter F3, and the three-stage filter F3 has one output through the three-stage output pneumatic ball valve B3 and a one-way valve CV3.
  • the other branch is connected to the intake port of the four-stage cylinder of the piston reciprocating compressor through the three-stage branch pneumatic ball valve A4, and is connected to the recovery tank PV through the three-stage recovery pneumatic ball valve C3;
  • the three-stage output line G3 connected to the air outlet of the three-stage cylinder YS3 is connected with the temperature sensor TS3, the safety valve SRV3 is connected after the third-stage cooler LQ3, and the main pressure is installed before the three-stage output pneumatic ball valve B3.
  • Force sensor PT31, a pressure sensor ⁇ 32 is connected before the three-stage branch pneumatic ball valve ⁇ 4;
  • the four-stage output line G4 connected to the outlet of the four-stage cylinder YS4 is connected in series with the four-stage cooler LQ4 and the four-stage filter F4, and the four-stage filter F4 has one output through the four-stage output pneumatic ball valve ⁇ 4 and a one-way valve CV4.
  • the temperature sensor TS4 is connected to the fourth-stage output line G4 connected to the air outlet of the four-stage cylinder YS4, and the safety valve SRV4 and the bleed valve FQ1 are connected to the fourth-stage cooler LQ4.
  • the main pressure sensor PT4 is installed in front of the output pneumatic ball valve B4.
  • All the pneumatic ball valves Al, ⁇ 2, A3, A4, Bl, ⁇ 2, ⁇ 3, ⁇ 4, Cl, C2, C3, have the pipeline and the electromagnetic reversing valve SV1-11 connected (the connection pair in this embodiment is: Al-SVll; A2-SV6; A3-SV4; A4-SV2; B1-SV10; B2-SV5; B3-SV3; B4-SV1; C1-SV8; C2-SV7; C3-SV9, but this is not the only way to connect The difference between the connection and the separate control can be), the recovery tank PV has a pipeline connecting all the electromagnetic reversing valves SV1—11, and the branch of the primary output line G1 is connected to all the electromagnetic reversing valves through a pressure reducing valve PR1 to provide pneumatic ball valve control. Use compressed gas.
  • the recovery tank PV is equipped with a pressure sensor PT6, a pressure gauge and a safety valve SRV6, and is connected to the input line via a pressure reducing valve PR2.
  • a pressure gauge can also be installed on the input line after the pneumatic ball valve A1 is input to the air inlet, and a pressure gauge can also be installed on the gas-liquid separator.
  • Gas-liquid separator QYF is connected to a safety valve SRV5, - Stage filter
  • the road connected to F1 is also connected to a safety valve SRV0.
  • Inverter, solenoid reversing valve SV1, SV2, SV3, SV4, SV5, SV6, SV10, SV11 and pressure sensor PT11, PT21, PT31, PT41 are connected to the PLC.
  • A1, A3, A4, Bl, Cl, C2, C3 are valve open.
  • A2, B2, B3, B4 are valve closed.
  • the piston reciprocating compressor operates in the first stage. Until the user's gas storage container is charged to 1.89 MPa, the piston reciprocating compressor consumes ⁇ 86 KW during this time period. At MPa, the second stage of the piston reciprocating compressor begins to operate.
  • A1, A2, A4, B2, C2, C3 are valve open states.
  • A3, B1, B3, B4, CI are valve closed. At this time, the piston reciprocating compressor operates in the second stage. Until the user's gas storage container is charged to 4. 14 MPa, the piston reciprocating compressor consumes ⁇ 160 KW during this time period. When P 2 4. 14 MPa, the third stage of the piston reciprocating compressor starts to operate.
  • Al, A2, A3, B3, C3 are valve open.
  • A4, B1, B2, B4, Cl, C2 are valve closed.
  • the piston reciprocating compressor is operated in the second stage, the second stage, and the third stage. Until the user's gas storage container is charged to 11.07 MPa, the piston reciprocating compressor consumes power during this period. 251 KW. When P 3 11.07 MPa, the fourth stage of the piston reciprocating compressor starts to operate.
  • A1, A2, A3, A4, B4, are valve open.
  • B1, B2, B3, C1, C2, and C3 are valve closed states.
  • the second stage, the second stage, the third stage, and the fourth stage of the piston reciprocating compressor are continuously operated until the user's gas storage container is charged to 22.5 MPa, at this time, the piston reciprocating Compressor power consumption ⁇ 320 KW.
  • the piston reciprocating compressor step compression system of the present invention is applied to the natural gas filling tank car gas tank.
  • the invention can effectively reduce the electric energy required for the filling process by 36%, specifically:
  • the above four states are controlled by the inverter to control the motor in different working states and output different powers.
  • the electronic control system uses a PLC (Programmable Logic Controller) to control each operation of the piston reciprocating compressor.
  • the device uses a variety of sensors, transmitters, solenoid valves to control and detect the operation of the equipment, as well as safety shutdown and fault alarms in the event of abnormal operation or failure, the operating status can be displayed in real time on the panel of the control cabinet
  • the touch screen of the full Chinese interface provides users with two easy-to-operate and friendly platforms that can be unattended.
  • the step compression system of the piston reciprocating compressor of the invention can be applied not only to natural gas tanker cans, but also to other similar compressed tanks of air, petroleum gas, simple gas (such as oxygen, nitrogen, etc.), and consumes
  • the power consumption is reduced by 36% compared with the traditional continuous type. It is of great significance for the piston reciprocating compressor users to reduce operating expenses, energy saving and consumption reduction, which fully conforms to the current development trend of building an energy-saving society.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne un procédé et un système de compression étagée pour un compresseur à piston alternatif, comprenant quatre étages de compression. Chaque étage comporte un conduit d'entrée et de sortie individuels. Des soupapes commandent l'étage de compression, et un automate programmable (PLC) commande les soupapes. Le conduit de sortie de chaque étage est divisé en deux conduits secondaires dont l'un est raccordé au conduit d'entrée de l'étage de compression suivant. Un transducteur commande le moteur d'entraînement. Ce procédé et ce système de compression étagée améliore de manière important le rendement de compression et permet des économies d'argent et d'énergie.
PCT/CN2007/070004 2007-04-10 2007-05-09 Procédé et système de compression étagée pour compresseur à piston alternatif WO2008122175A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710065298.4 2007-04-10
CN200710065298A CN101285462B (zh) 2007-04-10 2007-04-10 活塞往复式压缩机阶梯压缩系统

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Publication Number Publication Date
WO2008122175A1 true WO2008122175A1 (fr) 2008-10-16

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PCT/CN2007/070004 WO2008122175A1 (fr) 2007-04-10 2007-05-09 Procédé et système de compression étagée pour compresseur à piston alternatif

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WO (1) WO2008122175A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109681780A (zh) * 2019-02-21 2019-04-26 中国石油工程建设有限公司 一种基于往复式压缩机的成套气井增压系统及运行方法
CN112147926A (zh) * 2020-09-10 2020-12-29 四机赛瓦石油钻采设备有限公司 一种井口气回收装置集中控制系统及其控制方法

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CN106221839A (zh) * 2016-08-31 2016-12-14 武汉格瑞拓机械有限公司 一种高效节能沼气纯化与增压一体化装置
CN106930927A (zh) * 2017-04-25 2017-07-07 山东科瑞压缩机有限公司 一种压缩级可切换压缩机及其使用方法
CN109372718B (zh) * 2018-09-27 2019-10-25 中石化石油机械股份有限公司三机分公司 变工况往复式天然气压缩机设计方法
JP2020070740A (ja) * 2018-10-30 2020-05-07 株式会社神戸製鋼所 圧縮機、圧縮機の運転方法、ボイルオフガス回収システム
CN113235546B (zh) * 2021-04-22 2022-08-05 徐守坡 一种水利工程施工止水防渗装置
CN115405485B (zh) * 2022-09-29 2024-09-13 中国石油化工集团有限公司 一种可自动调节级数的储气库注气压缩机组及控制方法

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US20060118575A1 (en) * 2004-09-23 2006-06-08 Boyd Robert W Intelligent compressor strategy to support hydrogen fueling

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EP0770815A2 (fr) * 1995-10-27 1997-05-02 Preussag Wasser und Rohrtechnik GmbH Installation de remplissage en gaz
DE20103351U1 (de) * 2001-02-26 2001-05-23 FGN Ferngas Nordbayern GmbH, 90429 Nürnberg Gasbetankungsanlage für Kraftfahrzeuge
CN2646418Y (zh) * 2003-08-14 2004-10-06 四川金星环保科技有限公司 节能型天然气汽车加气子站压缩机
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US20060118575A1 (en) * 2004-09-23 2006-06-08 Boyd Robert W Intelligent compressor strategy to support hydrogen fueling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109681780A (zh) * 2019-02-21 2019-04-26 中国石油工程建设有限公司 一种基于往复式压缩机的成套气井增压系统及运行方法
CN109681780B (zh) * 2019-02-21 2023-10-31 中国石油工程建设有限公司 一种基于往复式压缩机的成套气井增压系统及运行方法
CN112147926A (zh) * 2020-09-10 2020-12-29 四机赛瓦石油钻采设备有限公司 一种井口气回收装置集中控制系统及其控制方法

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CN101285462B (zh) 2010-05-19
CN101285462A (zh) 2008-10-15

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