EP0172430A1 - Procédé de refroidissement d'un compresseur à vis et compresseur à vis pour effectuer ce procédé - Google Patents

Procédé de refroidissement d'un compresseur à vis et compresseur à vis pour effectuer ce procédé Download PDF

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Publication number
EP0172430A1
EP0172430A1 EP85109194A EP85109194A EP0172430A1 EP 0172430 A1 EP0172430 A1 EP 0172430A1 EP 85109194 A EP85109194 A EP 85109194A EP 85109194 A EP85109194 A EP 85109194A EP 0172430 A1 EP0172430 A1 EP 0172430A1
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EP
European Patent Office
Prior art keywords
condensate
temperature
screw compressor
compression chamber
fresh water
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.)
Granted
Application number
EP85109194A
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German (de)
English (en)
Other versions
EP0172430B1 (fr
Inventor
Günter Seidel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aerzener Maschinenfabrik GmbH
Original Assignee
Aerzener Maschinenfabrik GmbH
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 Aerzener Maschinenfabrik GmbH filed Critical Aerzener Maschinenfabrik GmbH
Publication of EP0172430A1 publication Critical patent/EP0172430A1/fr
Application granted granted Critical
Publication of EP0172430B1 publication Critical patent/EP0172430B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid

Definitions

  • the present invention relates to a method for cooling a screw compressor and a screw compressor having meshing engagement with the screw groove rotor, wherein condensate is fed into a compression chamber formed by the rotors and the wall of the surrounding working space, which is obtained in a separator connected on the outlet side.
  • the invention further relates to a screw compressor for performing the method.
  • the sealing arrangements for the shaft bearings must also be designed in a relatively complex manner in the case of compressor designs of the type mentioned. So vacuum or overpressure air barriers must be provided, which requires a not inconsiderable additional effort and the use of external energy.
  • a further disadvantage is that the condensate injected in the area of the inlet can influence the volumetric efficiency in accordance with the evaporating amount, which is also undesirable.
  • the object of the present invention is to provide a procedure for cooling a screw compressor and a screw compressor for carrying out the method create, in which or in the use of stainless steel and special materials in the manufacture in favor of cheaper materials can be dispensed with and complex sealing arrangements for the rotor shafts and the shaft bearings are not required.
  • This object is achieved according to the invention by a procedure in which the condensate is fed into the compression chamber after the compression chamber has been closed, opposite the inlet of the compressor, and fresh water is fed into the compression chamber downstream of the feed point, the condensate and fresh water feeds in Depending on the temperature of the medium in the outlet line can be controlled independently.
  • the features according to the invention create a procedure in which the cooling water injection process is graded for the first time in all operating phases and is carried out precisely in a controlled manner depending on the temperature of the conveyed medium, so that only superheated steam is obtained in the compressor.
  • condensate can neither accumulate on the suction side nor on the pressure side, so that.
  • the use of stainless steel or special materials in these areas is not necessary and cheaper. Materials can be provided.
  • the control of the condensate and the fresh water feed depending on the temperature of the medium in the outlet line can be controlled in the most favorable manner for the respective operating conditions.
  • a particularly simple and reliable control is achieved, however, when the condensate is fed in when a low temperature is reached and the fresh water is fed in when a second higher temperature is reached, and the feed is interrupted again when the temperature falls below the temperature.
  • the condensate K on- only in the compression chamber is injected when the compressed medium has at the end of the compression process reaches a certain temperature. If the temperature falls below the predetermined temperature value due to the condensate injection, the condensate injection is interrupted again so that the temperature can rise again.
  • the temperature of the pumped medium continues to rise despite the condensate injection, fresh water is injected into the compression chamber when the second higher temperature value is reached, thus causing additional cooling of the pumped medium. If, due to the fresh water injection, the temperature drops again below the second higher temperature value, the fresh water supply falls below again broken. If the temperature rises again above the second higher temperature value, fresh water is then fed into the compression chamber again.
  • the condensate is fed into the compression space via a first feed line and the fresh water via a second feed line.
  • This feed line is each equipped with a valve according to the invention, the valves being controlled by a temperature switch arranged in the outlet line of the compressor.
  • the valves are controlled by a temperature switch which responds to two adjustable temperature values.
  • This temperature switch opens the valve for the condensate supply line when the first lower temperature value is reached and the valve for the fresh water supply line when the second higher temperature value is reached. Furthermore, this temperature switch closes the respective valves as soon as the temperature drops below the respective temperature value.
  • valves can be designed in any manner. However, it is advantageous if the valves are designed as solenoid valves or as water flow regulators.
  • a cooler is provided in the outlet line, as seen in the flow direction, upstream of the condensate separator.
  • the coating of rotors of screw compressors is basically already known. Rotors of screw compressors are coated with plastic, for example, and such a coating also achieves an optimal sealing effect and efficiency.
  • Plastic coatings have the disadvantage that the compressors have to be dismantled and disassembled in the event of signs of separation. Lime-coated rotors, on the other hand, can be reworked in the installed state without dismantling. To do this, it is only necessary to selectively supply untreated fresh water in order to touch up the detached areas.
  • the drawing shows a screw compressor 1 equipped with a screw rib rotor and a screw groove rotor, which has an inlet 2 and an outlet 3.
  • the outlet 3 opens into an outlet line 4 in which a conventional cooler 5 is arranged.
  • the condensate separator 6 is equipped with a first feed line 7, via which the condensate obtained in the condensate separator is returned to the compressor.
  • the first feed line 7 is equipped with a valve 8 with which the feed of the condensate into the compression space of the compressor can be controlled.
  • the condensate is fed into the compression space at a point where the compression space is already closed off from the inlet of the compressor.
  • fresh water can be fed into the compression chamber of the compressor.
  • the feed point for the fresh water in the compression chamber is arranged such that it is downstream of the feed point for the condensate in the direction of conveyance of the compressor.
  • a temperature switch 11 is arranged in the outlet line 4 between the outlet 3 and the cooler 5.
  • This temperature switch 11 has in the present embodiment example two adjustable temperature values T 1 and T 2 .
  • the valves 8 and 10 which are designed as solenoid valves in the present exemplary embodiment, are controlled.
  • the control is designed as follows
  • both the valve 8 and the valve 10 are closed. If the temperature now rises to the temperature value T 1 , the valve 8 for the condensate is opened via the temperature switch 11. If the temperature reaches the temperature value T 21 , the valve 1o is also opened for the fresh water. If the temperature drops below the temperature value T 2 , the temperature switch 11 closes the valve 10 again. If the temperature then drops below the temperature value T 1 , the valve 8 is also closed via the temperature switch 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP85109194A 1984-07-23 1985-07-23 Procédé de refroidissement d'un compresseur à vis et compresseur à vis pour effectuer ce procédé Expired EP0172430B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843427117 DE3427117A1 (de) 1984-07-23 1984-07-23 Verfahren zum kuehlen eines schraubenverdichters sowie schraubenverdichter zur durchfuehrung des verfahrens
DE3427117 1984-07-23

Publications (2)

Publication Number Publication Date
EP0172430A1 true EP0172430A1 (fr) 1986-02-26
EP0172430B1 EP0172430B1 (fr) 1988-04-20

Family

ID=6241346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109194A Expired EP0172430B1 (fr) 1984-07-23 1985-07-23 Procédé de refroidissement d'un compresseur à vis et compresseur à vis pour effectuer ce procédé

Country Status (2)

Country Link
EP (1) EP0172430B1 (fr)
DE (2) DE3427117A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254660A (en) * 1991-04-12 1992-10-14 Kobe Steel Ltd Temperature control in a liquid injecting oil-free screw compressor
US6015260A (en) * 1997-03-25 2000-01-18 Atlas Copco Airpower, Naamloze Vennootschap Blow-off device of a compressor unit and moisture separator used thereby
WO2002023046A1 (fr) * 2000-09-12 2002-03-21 Werner Rietschle Gmbh + Co. Kg Pompe a alimentation en eau
AU763843B2 (en) * 1999-06-09 2003-07-31 Sterling Fluid Systems (Germany) Gmbh Rotary piston compressor with an axial direction of delivery
DE10151176B4 (de) * 2001-10-12 2008-02-28 Renner, Bernt Verdichteranlage mit mindestens einem wassereingespritzten Schraubenverdichter zum Verdichten von Gas
WO2009121151A1 (fr) * 2008-03-31 2009-10-08 Atlas Copco Airpower, Naamloze Vennootschap Procédé de refroidissement d'un élément compresseur à injection de liquide et élément compresseur à injection de liquide permettant la mise en application d'un tel procédé
BE1019636A3 (fr) * 2009-03-11 2012-09-04 Hitachi Ind Equipement Systems Co Ltd Compresseur d'air du type a injection d'eau.
EP2766604A1 (fr) 2011-09-26 2014-08-20 Ingersoll-Rand Company Compresseur à vis refroidi à l'eau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3903067C3 (de) * 1989-02-02 2000-02-10 Guenter Kirsten Verfahren zur Herstellung eines Rotors für Rotationskolbenmaschinen, sowie nach dem Verfahren hergestellter Rotor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535057A (en) * 1968-09-06 1970-10-20 Esper Kodra Screw compressor
FR2198104A1 (fr) * 1972-09-01 1974-03-29 Dunham Bush Inc
DE2628088A1 (de) * 1975-06-24 1977-01-20 Maekawa Seisakusho Kk Kuehlvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535057A (en) * 1968-09-06 1970-10-20 Esper Kodra Screw compressor
FR2198104A1 (fr) * 1972-09-01 1974-03-29 Dunham Bush Inc
DE2628088A1 (de) * 1975-06-24 1977-01-20 Maekawa Seisakusho Kk Kuehlvorrichtung

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2254660A (en) * 1991-04-12 1992-10-14 Kobe Steel Ltd Temperature control in a liquid injecting oil-free screw compressor
US5174741A (en) * 1991-04-12 1992-12-29 Kabushiki Kaisha Kobe Seiko Sho Liquid injecting type oil-free screw compressor
GB2254660B (en) * 1991-04-12 1994-06-22 Kobe Steel Ltd Compression apparatus employing a liquid injecting type oil-free screw compressor and a method of controlling such a compressor
US6015260A (en) * 1997-03-25 2000-01-18 Atlas Copco Airpower, Naamloze Vennootschap Blow-off device of a compressor unit and moisture separator used thereby
AU763843B2 (en) * 1999-06-09 2003-07-31 Sterling Fluid Systems (Germany) Gmbh Rotary piston compressor with an axial direction of delivery
WO2002023046A1 (fr) * 2000-09-12 2002-03-21 Werner Rietschle Gmbh + Co. Kg Pompe a alimentation en eau
US7077635B2 (en) 2000-09-12 2006-07-18 Werner Rietschle Gmbh + Co. Kg Pump comprising a water supply
DE10151176B4 (de) * 2001-10-12 2008-02-28 Renner, Bernt Verdichteranlage mit mindestens einem wassereingespritzten Schraubenverdichter zum Verdichten von Gas
WO2009121151A1 (fr) * 2008-03-31 2009-10-08 Atlas Copco Airpower, Naamloze Vennootschap Procédé de refroidissement d'un élément compresseur à injection de liquide et élément compresseur à injection de liquide permettant la mise en application d'un tel procédé
BE1018075A3 (nl) * 2008-03-31 2010-04-06 Atlas Copco Airpower Nv Werkwijze voor het koelen van een vloeistofgeinjecteerd compressorelement en vloeistofgeinjecteerd compressorelement voor het toepassen van zulke werkwijze.
US20110014077A1 (en) * 2008-03-31 2011-01-20 Kristof Adrien Laura Martens Method for cooling a liquid-injected compressor element and liquid-inject compressor element for applying such a method
CN101981319A (zh) * 2008-03-31 2011-02-23 阿特拉斯·科普柯空气动力股份有限公司 一种液体喷射式压缩机元件的冷却方法以及实施该方法的液体喷射式压缩机元件
JP2014088876A (ja) * 2008-03-31 2014-05-15 Atlas Copco Airpower Nv 液体注入式圧縮機要素部の冷却方法及びこのような方法が適用される液体注入式圧縮機要素部
CN101981319B (zh) * 2008-03-31 2015-07-08 阿特拉斯·科普柯空气动力股份有限公司 一种液体喷射式压缩机元件的冷却方法以及实施该方法的液体喷射式压缩机元件
US10927836B2 (en) * 2008-03-31 2021-02-23 Atlas Copco Airpower, Naamloze Vennootschap Method for cooling a liquid-injected compressor element and liquid-inject compressor element for applying such a method
BE1019636A3 (fr) * 2009-03-11 2012-09-04 Hitachi Ind Equipement Systems Co Ltd Compresseur d'air du type a injection d'eau.
US8616856B2 (en) 2009-03-11 2013-12-31 Hitachi Industrial Equipment Systems Co., Ltd. Air compressor of water injection type
EP2766604A1 (fr) 2011-09-26 2014-08-20 Ingersoll-Rand Company Compresseur à vis refroidi à l'eau

Also Published As

Publication number Publication date
DE3427117A1 (de) 1986-02-20
EP0172430B1 (fr) 1988-04-20
DE3562291D1 (en) 1988-05-26

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