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Improved water- injected screw compressor element.

A screw compressor, water jet technology, applied in the components of the pumping device for elastic fluid, the pump components of the rotary piston type/swing piston type, the rotary piston type machinery, etc., can solve the problem of not being absorbed, etc.

Active Publication Date: 2009-06-10
ATLAS COPCO AIRPOWER NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] With the limited diameter of the axial bearing, these gas forces are too great to be absorbed

Method used

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  • Improved water- injected screw compressor element.
  • Improved water- injected screw compressor element.
  • Improved water- injected screw compressor element.

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] As shown in the figure, the water-injected screw compressor component 1 is a high-pressure compressor component of the present invention, which mainly includes a casing 2 and two cooperating rotors, that is, a concave-shaped Rotor 3 and male rotor 4.

[0037] The casing 2 encloses a rotor chamber 5 provided at one far end, the so-called inlet side, with an inlet 6 for the gas to be compressed, and at the other far end, the so-called outlet side, with an outlet 7 for the compressed gas and spray water.

[0038] The screw compressor part 1 has a pressurized water circuit 8 with a dehydrator 9 for separating water 10 from the compressed gas, which is therefore connected to the outlet 7 by an outlet pipe 11 and thus the dehydrator 9 At the top it includes a discharge pipe 12 for the compressed gas and at the bottom a water pipe 13 for sending water back through the spout 14 and sprayed into the rotor chamber 5 .

[0039] The concave rotor 3 has a helical body 15 arranged ...

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PUM

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Abstract

Improved water- injected screw compressor element which mainly consists of a housing (2) on the one hand, confining a rotor chamber (5) with an inlet (6) on one far end and an outlet (7) on the other far end and in which two co-operating rotors (3,4) are provided which are bearing- mounted in the housing (2) with their shaft (16,20) by means of water-lubricated bearings (17,18,21,22) , characterised in that for every rotor are provided two pistons, a first piston (37,38) and a second piston (17,21) respectively, which can be each axially shifted in a guide, whereby each of these pistons (17,21,37,38) makes contact with the rotor (3,4) concerned with one side or is part of it, and makes contact with a pressure chamber (41,42,43,44) with an opposite side, in order to partly or almost entirely compensate for axial force components exerted by the compressed gasses on the rotors.

Description

technical field [0001] The present invention relates to an improved water-injected screw compressor component. Background technique [0002] As is well known, the components of a water-injected screw compressor include, on the one hand, a casing that defines a rotor chamber having an inlet at one distal end and an outlet at the other distal end of the rotor chamber, and in which two cooperating The rotors are mounted in the casing with their shafts respectively through water-lubricated bearings on the inlet side and the outlet side of the casing, and on the other hand include a water circuit for spraying water, which is connected to the compressor part outlet, and leads to the rotor chamber and to the bearings mentioned above. [0003] In the case of such water-injected compressor components, water can be used instead of oil as a lubricant for the rotor and its bearings. [0004] In this way, it is possible to obtain oil-free compressed air and to cool the rotor in a simpl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/16F04C29/00F04C29/02
CPCF04C29/0021F04C2210/147F04C29/026F04C18/16F04C2240/52F04C29/02F04C29/00
Inventor A·V·范德黑根
Owner ATLAS COPCO AIRPOWER NV