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Low-pressure cylinder shaft seal steam flow testing device of high-pressure and intermediate-pressure combined cylinder turbine

A flow test device, high and medium pressure cylinder technology, applied in the direction of safety devices, mechanical equipment, engine components, etc., can solve problems such as non-installation, achieve the effect of less test instruments, improve operating efficiency, and have no installation difficulties

Pending Publication Date: 2021-08-10
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To measure the steam flow of the shaft seal pipeline, a throttling orifice flow measuring device is installed on the steam pipeline, but the units currently in service are generally not installed with this test device

Method used

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  • Low-pressure cylinder shaft seal steam flow testing device of high-pressure and intermediate-pressure combined cylinder turbine
  • Low-pressure cylinder shaft seal steam flow testing device of high-pressure and intermediate-pressure combined cylinder turbine
  • Low-pressure cylinder shaft seal steam flow testing device of high-pressure and intermediate-pressure combined cylinder turbine

Examples

Experimental program
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Effect test

Embodiment

[0030] refer to figure 1 , figure 2 and image 3 .

[0031] A cylinder shaft seal steam flow test device for a combination of high and medium pressure cylinders, the device includes a shaft seal cooling module, an outlet steam temperature and pressure detection module, an inlet steam temperature and pressure detection module, and an inlet steam regulating valve;

[0032] The outlet steam temperature and pressure detection module includes a high-medium pressure cylinder combined cylinder shaft seal overflow steam temperature measurer 1, a high-medium pressure cylinder combined cylinder shaft seal overflow steam pressure measurer 2; the inlet steam temperature and pressure detection module includes a low-pressure cylinder Shaft seal inlet steam temperature measuring device 12, low-pressure cylinder shaft seal inlet steam pressure measuring device 13; the shaft seal desuperheating module includes a desuperheating water regulating valve 4, a shaft seal desuperheating water temp...

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PUM

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Abstract

The invention discloses a low-pressure cylinder shaft seal steam flow testing device of a high-pressure and intermediate-pressure combined cylinder turbine. The device comprises a shaft seal temperature reduction module, a steam outlet temperature and pressure detection module, a steam inlet temperature and pressure detection module and a steam inlet adjusting valve, wherein the shaft seal temperature reduction module is connected to a shaft seal overflow steam collecting pipe through a three-way joint, the shaft seal overflow steam collecting pipe is divided into a high-pressure and intermediate-pressure combined cylinder shaft seal overflow steam collecting pipe and a low pressure cylinder shaft seal steam inlet main pipe by the three-way joint, the steam outlet temperature and pressure detection module and the steam inlet adjusting valve are arranged on the high-pressure and intermediate-pressure combined cylinder shaft seal overflow steam collecting pipe, and the steam inlet temperature and pressure detection module is arranged on the low pressure cylinder shaft seal steam inlet main pipe. According to the low-pressure cylinder shaft seal steam flow testing device of the high-pressure and intermediate-pressure combined cylinder turbine, the flow, temperature and pressure of the device are measured, and a high-pressure and intermediate-pressure combined cylinder shaft seal overflow steam flow can be monitored, so that the size change trend of a gap between shaft seal teeth and a rotor of a steam turbine shaft seal system is supported.

Description

technical field [0001] The invention relates to the technical field of flow measurement and control of a steam turbine generator set and thermal equipment thereof, in particular to a steam flow test device for a low-pressure cylinder shaft seal of a high-medium pressure cylinder combined-cylinder steam turbine. Background technique [0002] The shaft seal system of the turbogenerator unit with high and medium pressure cylinders is an important device to prevent air from entering the cylinder and to recycle the leaked steam from the cylinder. In the start-up or low-load stage of the turbo-generator set, in order to realize the formation of vacuum in the steam chamber of the condenser, it is necessary to supply steam to the seal of the steam turbine high-medium-pressure cylinder and the seal of the low-pressure cylinder. Vacuum is formed; in the high-load stage of the turbogenerator set, as the steam flowing out from the high and medium pressure cylinders to the shaft seal inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D21/00F01D11/06
CPCF01D21/003F01D11/06
Inventor 文立斌胡弘李俊孙志媛吴健旭张翌晖窦骞卢广陵
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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