DE921942C - Expansion machine for use in an air separation plant - Google Patents

Expansion machine for use in an air separation plant

Info

Publication number
DE921942C
DE921942C DEB22053A DEB0022053A DE921942C DE 921942 C DE921942 C DE 921942C DE B22053 A DEB22053 A DE B22053A DE B0022053 A DEB0022053 A DE B0022053A DE 921942 C DE921942 C DE 921942C
Authority
DE
Germany
Prior art keywords
expansion machine
brake
air separation
generated
separation plant
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.)
Expired
Application number
DEB22053A
Other languages
German (de)
Inventor
Anton Walter Freud
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.)
BOC Group Ltd
Original Assignee
British Oxigen Ltd
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 British Oxigen Ltd filed Critical British Oxigen Ltd
Application granted granted Critical
Publication of DE921942C publication Critical patent/DE921942C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/14—Power generation using energy from the expansion of the refrigerant
    • F25B2400/141—Power generation using energy from the expansion of the refrigerant the extracted power is not recycled back in the refrigerant circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)

Description

Expansionsmaschine zur Verwendung bei einer Luftzerlegungsanlage Die Erfindung bezieht sich auf Expansionsmaschinen; insbesondere auf Expansionsmaschinen zur Lieferung der von einer Luftzerlegungsanlage benötigten Kältemengen.Expansion machine for use in an air separation plant Die Invention relates to expansion machines; especially on expansion machines to deliver the amount of cold required by an air separation plant.

Bei Luftzerlegungsanlagen der Claude-Bauart werden praktisch sämtliche für die Anlage erforderliche Kältemengen von einer Expansionsmaschine geliefert. Die der Luft durch eine derartige Maschine entzogene Wärmemenge tritt als Arbeit wieder auf und muß durch eine geeignete Bremse aufgenommen werden.In the case of air separation units of the Claude type, practically all The amount of cold required for the system is supplied by an expansion machine. The amount of heat extracted from the air by such a machine occurs as work up again and must be picked up by a suitable brake.

Bei großen Luftzerlegungsanlagen besitzt die auf diese Weise erzeugte Energie einen recht beträchtlichen Umfang und wird normalerweise dadurch wiedergewonnen, daß man als Bremse einen elektrischen Generator verwendet, die Wärmeenergie also in elektrischen Strom umwandelt. Bei kleineren Luftzerlegungsanlagen dagegen ist die erzeugte Energie sehr gering und kann ohne große Verluste, ohne Nutzarbeit zu leisten, abgeführt werden.In large air separation plants, the generated in this way has Energy is quite substantial and is usually recovered by that an electric generator is used as a brake, i.e. thermal energy converts it into electricity. In the case of smaller air separation plants, however, this is the case The energy generated is very low and can be used without great losses, without any useful work afford to be carried away.

Die Größe der zu verwendenden Bremse bemißt sich nun aber nicht nach der von der Expansionsmaschine während des normalen Betriebes der Luftzerlegungsanlage erzeugten Energie, sondern nach der während des anfänglichen Abkühlens der Anlage erzeugten Energie, die nämlich den normalen Wert erheblich übersteigt. Die volle Bremsleistung kommt also nur während der kurzen und nicht häufigen Abkühlzeiten zur Anwendung, und während des größten Teils der Betriebszeit der Anlage arbeitet die Bremse nur mit einem Bruchteil ihrer vollen Leistung.However, the size of the brake to be used cannot be measured that of the expansion machine during normal operation of the air separation unit generated energy, but after that during the initial cooling of the system generated energy, which namely significantly exceeds the normal value. The full Braking power comes only during the short and infrequent cooling times for application, and during most of the operating time of the System, the brake only works with a fraction of its full capacity.

Ein Ziel der vorliegenden Erfindung ist es, eine Expansionsmaschine vorzusehen, bei welcher die Bremse jederzeit praktisch mit voller Leistung arbeitet.An object of the present invention is to provide an expansion machine to be provided in which the brake works practically at full power at all times.

Gemäß der Erfindung ist eine Expansionsmaschine zur Verwendung in einer Luftzerlegungsanlage mit einer Hauptbremsvorrichtung, welche praktisch mit voller Leistung arbeitet, um die von der Expansionsmaschine während des normalen Betriebes der Zerlegungsanlage erzeugte Energie aufzunehmen, sowie mit einer Hilfsbremsvorrichtung, welche die durch die Expansionsmaschine während des anfänglichen Abkühlens der Anlage zusätzlich erzeugte Energie aufnimmt, versehen.According to the invention an expansion machine for use in an air separation plant with a main braking device, which practically with full power works to that of the expansion machine during normal Energy generated during operation of the dismantling plant, as well as with an auxiliary braking device, which is generated by the expansion machine during the initial cool down of the plant absorbs additionally generated energy, provided.

Die Bremse für normalen Betrieb kann zweckmäßigerweise die Form eines Ventilators mit verstellbaren Flügeln oder die eines Saugdämpfers oder irgendwelcher anderen Anordnungen, welche kleine Drehzahländerungen gestatten, haben. Die zusätzliche Bremse, welche während der Abkühlzeiten der Anlage in Betrieb kommt, kann eine Bremse der Reibungsbauart sein, wobei die dabei entwickelte Wärme durch den vom Ventilator erzeugten Luftstrom abgeführt wird. Natürlich ist diese Anordnung zweier Bremsen lediglich für kleine Luftzerlegungsanlagen geeignet, bei denen die von der Expansionsmaschine geleistete Arbeit ohne weiteres verlorengehen kann.The brake for normal operation may conveniently take the form of a Fan with adjustable blades or that of a suction damper or whatever other arrangements that allow small speed changes have. The additional A brake can be used as a brake that comes into operation when the system is cooling down the friction type, with the heat generated by the fan generated air flow is discharged. Of course, this arrangement is two brakes only suitable for small air separation plants in which the expansion machine A job well done can easily be lost.

Claims (1)

PATENTANSPRÜCHE: r. Expansionsmaschine zur Verwendung bei einer Luftzer legungsanlage, dadurch gekennzeichnet, daß dieselbe mit einer Hauptbremse, welche mit praktisch der vollen Leistung arbeitet, um die von der Expansionsmaschine während des normalen Betriebes der Zerlegungsanlage erzeugte Energie aufzunehmen, und mit einer Hilfsbremse, welche die von der Expansionsmaschine während des anfänglichen Abkühlens der Anlage erzeugte zusätzliche Energie aufnimmt, versehen ist. Expansionsmaschine gemäß Anspruch r, dadurch gekennzeichnet, daß die Hauptbremse die Form eines Ventilators mit verstellbaren Flügeln besitzt. 3. Expansionsmaschine gemäß Anspruch dadurch gekennzeichnet, daß die Hilfsbremse die Form einer Reibungsbremse besitzt und daß die von der letzteren im Betriebe erzeugte Wärme durch den Luftstrom des Ventilators abgeführt wird.PATENT CLAIMS: r. Expansion machine for use in an air cereal laying system, characterized in that the same with a main brake, which works at practically full power to that of the expansion machine during to absorb energy generated during normal operation of the cutting plant, and with an auxiliary brake, which is used by the expansion machine during the initial Cooling the system generated additional energy is provided. Expansion machine according to claim r, characterized in that the main brake is in the form of a fan with adjustable wings. 3. expansion machine according to claim characterized characterized in that the auxiliary brake is in the form of a friction brake and that the heat generated by the latter in the company through the air flow of the fan is discharged.
DEB22053A 1951-10-17 1952-09-17 Expansion machine for use in an air separation plant Expired DE921942C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB921942X 1951-10-17

Publications (1)

Publication Number Publication Date
DE921942C true DE921942C (en) 1955-01-07

Family

ID=10721880

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB22053A Expired DE921942C (en) 1951-10-17 1952-09-17 Expansion machine for use in an air separation plant

Country Status (1)

Country Link
DE (1) DE921942C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024534B (en) * 1956-03-07 1958-02-20 Sulzer Ag Relaxation turbine, e.g. B. for refrigerants of a compression refrigeration system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1024534B (en) * 1956-03-07 1958-02-20 Sulzer Ag Relaxation turbine, e.g. B. for refrigerants of a compression refrigeration system

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