Contact type sealing structure suitable for supercritical carbon dioxide compression unit

A technology of contact sealing and carbon dioxide, which is applied in the sealing of engines, sealing devices of piston pumps, mechanical equipment, etc., can solve the problems of national and enterprise losses and friction, reduce leakage, improve sealing effect, and avoid friction. Effect

Inactive Publication Date: 2018-01-09
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
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Problems solved by technology

[0004] In recent years, with the continuous improvement of parameters and single machine power, accidents have occurred almost every y

Method used

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  • Contact type sealing structure suitable for supercritical carbon dioxide compression unit

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Embodiment Construction

[0022] The present invention is described in further detail below in conjunction with accompanying drawing:

[0023] refer to figure 1 , the contact seal structure suitable for supercritical carbon dioxide compressor set according to the present invention includes a seal body 1, a first soft seal tooth 7, a second soft seal tooth 4, a shaft sleeve 5, several springs 6 and several seal teeth, the seal The body 1 is composed of an upper structure and a lower structure, wherein the bottom of the upper structure is provided with a card slot, the upper end of the lower structure is clamped in the card slot, one end of the spring 6 is connected to the bottom of the card slot, and the other end of the spring 6 One end is connected with the upper end of the lower structure, the upper end of the sealing tooth, the upper end of the first soft sealing tooth 7 and the upper end of the second soft sealing tooth 4 are all fixed on the lower end surface of the lower structure, and the sealin...

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Abstract

The invention discloses a contact type sealing structure suitable for a supercritical carbon dioxide compression unit. The sealing structure comprises a sealing body, first soft sealing tooth, a second soft sealing tooth, a shaft sleeve, a plurality of springs and a plurality of sealing teeth; the sealing body consists of an upper structure and a lower structure, wherein a clamping groove is formed in the bottom part of the upper structure, and the upper end of the lower structure is clamped in the clamping groove; one end of the springs is connected with the bottom part of the clamping groove, and the other end of the springs is connected with the upper end of the lower structure; the upper end of the sealing teeth, the upper end of the first soft sealing tooth and the upper end of the second sealing tooth are fixed on the lower end surface of the lower structure; the sealing teeth are located between the first soft sealing tooth and the second soft sealing tooth, and the shaft sleeveis located on the lower part of the sealing teeth, the first soft sealing tooth and the second soft sealing tooth. According to contact type sealing structure, the problem that the gap of the air seal is large due to the fact that the sealing teeth are worn by a rotor in the running process of the unit can be effectively solved, so that sealing effect is good.

Description

technical field [0001] The invention relates to a contact sealing structure, in particular to a contact sealing structure suitable for a supercritical carbon dioxide compressor unit. Background technique [0002] Thermoelectric conversion based on the supercritical carbon dioxide (S-CO2) Brayton cycle is an innovative and revolutionary power generation technology. The supercritical state of CO2 is easy to realize, and the turbine system equipment such as compressors and turbines using S-CO2 as the working medium is compact in structure and small in size, which can significantly reduce the construction cost of the power plant, realize modular construction technology, and thermoelectric conversion Compared with the traditional gas turbine, the efficiency is increased to 50%, and the equipment cost can be reduced by 20% compared with the traditional steam cycle. It is estimated that the cost of the power system can be reduced by 20% to 25%, and the economy of the power system c...

Claims

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Application Information

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IPC IPC(8): F04C27/00F16J15/16
Inventor 蒋世希李红智姚明宇吴帅帅韩万龙杨玉
Owner XIAN THERMAL POWER RES INST CO LTD
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