Screw expander

A screw expander and bearing box technology, which is applied to mechanical equipment, engine components, machines/engines, etc., can solve the problems of screw expander unit vibration, inconsistent elevation of front and rear bearings, etc., and achieve the effect of ensuring safe operation

Pending Publication Date: 2021-05-04
北京中电海峡科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above problems, the object of the present invention is to provide a screw expander, which can solve the problem of vibration of the screw expander unit caused by the inconsistent elevation of the front and rear bearings of the screw expander due to the temperature change of the shell, thereby improving the screw expander unit. safety

Method used

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Embodiment Construction

[0032] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describin...

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Abstract

The invention relates to the technical field of waste heat recovery equipment, and discloses a screw expander. The screw expander comprises a shell, a first supporting assembly and a second supporting assembly, wherein a male rotor and a female rotor which rotate synchronously are arranged in the shell; the first supporting assembly is arranged at one side of the shell in a spaced mode and comprises a first bearing box and a first support; and the second supporting assembly is arranged at the other side of the shell in a spaced mode and comprises a second bearing box and a second support. According to the screw expander, the shell is spaced from the first bearing box and the second bearing box, so that the temperature of the first bearing box and the temperature of the second bearing box do not change along with the change of the temperature of the shell. As a result, the elevations of a first supporting bearing, a thrust bearing and a second supporting bearing and the elevation of the shell are mutually independent without influencing one another, the problem that a forced shutdown is caused by unit vibration due to a large difference between the elevations of the bearings at the front ends and the rear ends of the male rotor and the female rotor in the operation process of the screw expander is avoided, and the operation safety of a screw expander unit is ensured.

Description

technical field [0001] The invention relates to the technical field of waste heat recovery equipment, in particular to a screw expander. Background technique [0002] The screw expander is a heat engine that relies on the expansion of the gas volume to drive the screw rotor to rotate and convert heat energy into mechanical energy. The screw expander is widely used in industrial waste heat recovery, geothermal power generation, biomass power generation and other fields. It can directly drive generators, and also It can directly drive mechanical equipment such as pumps and fans, which improves energy utilization and reduces environmental pollution while ensuring safe production. [0003] At present, the support structure of the screw expander is usually designed in one piece with its shell. With the increase of the capacity of the screw expander unit, the overall structural size of the screw expander also increases. It is very sensitive, and the elevation of the bearing will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01C1/16F01C21/02F01C21/00
CPCF01C1/16F01C21/003F01C21/007F01C21/02
Inventor 顾煜炯赵文博肖官和秦中伟温静董红霞李路杨树国张兆月
Owner 北京中电海峡科技有限公司
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