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Novel temperature-reducing device of temperature-reducing and pressure-reducing valve

A technology of temperature reduction and pressure reduction, pressure reducing valve, applied in safety devices, engine components, machines/engines, etc., can solve problems such as large temperature fusion drop of valve body, valve body crack leakage, safety accidents, etc., and achieve stable production and operation. Effect

Inactive Publication Date: 2019-01-04
HUBEI SANNING CHEM
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The most commonly used is the temperature and pressure reduction valve that integrates temperature reduction and pressure reduction. According to the gas load of the turbine, part of the superheated steam is cooled in the temperature and pressure reduction valve and then used in steps in the subsequent section. To cool down the desalinated water, due to the large temperature fusion drop of the valve body at the water supply part, cracks and leakage of the valve body are caused, which is extremely easy to cause safety accidents

Method used

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  • Novel temperature-reducing device of temperature-reducing and pressure-reducing valve
  • Novel temperature-reducing device of temperature-reducing and pressure-reducing valve

Examples

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Embodiment Construction

[0014] Such as Figure 1-2 As shown, a new type of desuperheating device for a desuperheating and decompression valve is arranged on the output end of the decompression valve 7, including a spray pipe 3 installed inside the steam pipe 2, and 28 spray pipes are staggered and drilled on the spray pipe 3. The shower holes 1 and the spray holes 1 are equidistantly arranged circularly and interlaced, and the interlaced angle is 45°. This ensures even mixing and rapid cooling. A blind plate 5 is arranged at the end of the spray pipe 3 to form a sealed structure at one end. The end of the spray pipe 3 is installed on the steam pipe 2 through the spray pipe support 4, and is installed concentrically with the steam pipe 2; There are check valve 8, shut-off valve 9, cooling water valve 10. The steam temperature feedback signal is provided by the thermometer behind the decompression valve, so as to control the switch of the cooling water valve 10, adjust the water supply of the sprayi...

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Abstract

The invention discloses a novel temperature-reducing device of a temperature-reducing and pressure-reducing valve. A tubular spray device is embedded into a downstream steam pipeline of the pressure-reducing valve; and the opening and closing of a temperature-reducing water self-adjusting valve and spray cooling of the tubular spray device are controlled through outlet steam temperature. With theadoption of the structure, the purpose of spraying steam to cool is achieved.

Description

technical field [0001] The invention relates to the field of thermal turbine generators, in particular to a novel desuperheating device for a desuperheating and decompressing valve. Background technique [0002] The steam of the steam turbine generator set is equipped with a bypass, and the steam passes through the temperature and pressure reduction valve to be used in cascades in other sections. The most commonly used is the temperature and pressure reduction valve that integrates temperature reduction and pressure reduction. According to the gas load of the turbine, part of the superheated steam is cooled in the temperature and pressure reduction valve and then used in steps in the subsequent section. To cool down the desalinated water, due to the large temperature fusion drop of the valve body at the water supply part, the valve body will crack and leak, which is extremely easy to cause safety accidents. Contents of the invention [0003] The technical problem to be so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/12F01D21/12
CPCF01D25/12F01D21/12
Inventor 李万清魏天荣周从胜李洪波熊国元
Owner HUBEI SANNING CHEM
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