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Double-screw compressor for high pressure system

A high-pressure system and twin-screw technology, applied in the field of compressors, can solve problems such as increased manufacturing and use costs, increased use pressure, etc., and achieve the effects of reduced load, reduced vibration, and meeting requirements

Inactive Publication Date: 2007-10-03
SUZHOU HALDANE NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods greatly increase the cost of manufacture and use
In addition, the rigidity of the rotor after stress under high pressure is also a problem
These circumstances make the current maximum operating pressure of twin-screw compressors usually less than 3Mpa, its application in high-pressure systems is limited, and it is difficult to greatly increase the operating pressure

Method used

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  • Double-screw compressor for high pressure system
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  • Double-screw compressor for high pressure system

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specific Embodiment

[0028] Referring to Fig. 1 and Fig. 3, the present invention includes a pair of intermeshing male rotor 1 and female rotor 5. There are two helical parts a and b with opposite directions on the male rotor 1, and there are two corresponding helical parts a and b on the female rotor 2. To the opposite helical parts c and d. Three sets of bearings are respectively arranged on the male rotor 1 and the female rotor 5, the radial force bearing 3, the radial force bearing 12, and the radial force bearing 11 at the two ends and the middle of the male rotor 1, and the radial force bearings at both ends and the middle of the female rotor 5. Radial force bearing 4, radial force bearing 7, radial force bearing 8, axial force bearing 9, axial force bearing 10;

[0029] The axial force bearing 9 and the axial force bearing 10 can be arranged at the end of the rotor, or at the middle section of the rotor.

[0030] The casing 6 with several components together with the male rotor 1 and the f...

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Abstract

The invention discloses a double screw rod compressor for a high pressure system, comprising a working cavity composed of positive rotor and negative rotor, mutually engaging, and casing; the casing is provided with air intake and air outlet, the extension shaft of the positive rotor is provided with shaft seal, and air inlet and outlet channels are arranged in the casing; each of the negative and positive rotors has bearings which bear axial and radial forces and are distributed on two ends and in the middle; each of the negative and positive rotors are provided with two spiral sections whose tooth shape and size are the same as those of two spiral sections of a rotor, where the teeth correspond one to one and their spiral directions are opposite; the ratio of length to diameter of the spiral section is 1:1-1:1.2, the positive rotor has five or six teeth and the negative has seven or eight teeth, and the diameter of root circle of the negative rotor is not less than that of the positive rotor. Its exhaust pressure can be up to 15MPa, able to be widely applied to high pressure systems of critical CO2 refrigeration, process compression, oil gas mixed transport, etc.

Description

technical field [0001] The invention relates to a compressor, in particular to a twin-screw compressor which can be widely used in high-pressure systems. Background technique [0002] Twin-screw compressor is a kind of volumetric compressor. Due to its advantages of simple structure, high reliability, convenient operation and maintenance, strong adaptability and multi-phase mixed transmission, it has been widely used. In aerodynamic devices and refrigeration devices with medium cooling capacity, it has become the mainstream model. [0003] In the field of refrigeration, the replacement of Freon refrigerants is becoming more and more prominent. Among the many alternative refrigerants, CO 2 Refrigerants have attracted widespread attention in the industry. transcritical CO 2 The unit has the advantages of high heat transfer coefficient and low compression ratio, but its working pressure is high, which can reach 15MPa, so it poses a challenge to the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/16
Inventor 邢子文李建风吴华根束鹏程
Owner SUZHOU HALDANE NEW ENERGY
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