Steam utilization system of factory producing concrete pipe pile

Patent metadata

Field	Value
Publication number	US-12485577-B2
Application number	US-202318299739-A
Country	US
Kind code	B2
Filing date	Apr 13, 2023
Priority date	Feb 21, 2022
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A steam utilization system for producing a concrete pipe pile includes a steam conveying device, a steam curing pool, a plurality of reaction vessels, a steam generating device, a first steam distributor, a first pressure booster, a second pressure booster and a blowdown flash tank. A high-pressure steam inlet of the first steam distributor is communicated with the steam generating device, and a first steam inlet of the first pressure booster is communicated with a first high-pressure steam outlet of the first steam distributor. A second steam inlet of the first pressure booster is communicated with the steam conveying device, the steam outlet of the first booster is communicated with the steam inlet of each reaction vessel, a first steam inlet of a second pressure booster is communicated with the first steam distributor, a second steam inlet of the second pressure booster is communicated with the blowdown flash tank.

First claim

What is claimed is:

1 . A steam utilization system of a factory producing a concrete pipe pile, comprising: a steam conveying pipeline, a steam curing pool and a plurality of reaction kettles, the steam conveying pipeline being configured for conveying a low-pressure steam from a power plant, the steam curing pool being configured for steam curing the concrete pipe pile with a first pressure steam, and the plurality of reaction kettles being configured for autoclaving the steam cured concrete pipe pile with a second pressure steam; wherein
the steam utilization system of the factory producing the concrete pipe pile further comprises a steam generating device, a first steam distributor, a first pressure booster, a second pressure booster, a blowdown flash tank, a second steam distributor and a third pressure booster, wherein the steam generating device is configured for generating a high-pressure steam, which is communicated with the first steam distributor through a first pipeline; the first steam distributor comprises a first cylinder body, a high-pressure steam inlet, a first high-pressure steam outlet, a second high-pressure steam outlet and a third high-pressure steam outlet provided on the first cylinder body, the high-pressure steam inlet of the first steam distributor being communicated with the steam generating device through the first pipeline; the steam generating device comprises an electric boiler and a natural gas boiler, the electric boiler being configured to generate steam by using electricity produced by a solar photovoltaic panel, and high-pressure steam discharge ports of the electric boiler and the natural gas boiler being respectively communicated with the high-pressure steam inlet of the first steam distributor, so as to transport a generated high-pressure steam of 2.5 MPa to the first steam distributor; the first pressure booster comprises a first pressure booster body, a first steam inlet of the first pressure booster, a second steam inlet of the first pressure booster and a steam outlet of the first pressure booster provided on the first pressure booster body, the first steam inlet of the first pressure booster being communicated with the first high-pressure steam outlet of the first steam distributor, the second steam inlet of the first pressure booster being communicated with the steam conveying pipeline, and the steam outlet of the first pressure booster being communicated with a steam inlet of each of the plurality of reaction kettles through a reaction steam channel; the second pressure booster comprises a second pressure booster body, a first steam inlet of the second pressure booster, a second steam inlet of the second pressure booster and a steam outlet of the second pressure booster provided on the second pressure booster body, the first steam inlet of the second pressure booster being communicated with the second high-pressure steam outlet of the first steam distributor, the second steam inlet of the second pressure booster being communicated with the blowdown flash tank, and the steam outlet of the second pressure booster being communicated with the steam curing pool through a second pipeline and a third pipeline; and the blowdown flash tank comprises a flash tank body, a steam inlet, a steam outlet and a sewage outlet provided on the flash tank body, the steam inlet being communicated with a steam and condensed water outlet of each of the plurality of reaction kettles, and the steam outlet being communicated with the second steam inlet of the second pressure booster in the second pressure booster; the second steam distributor comprises a second cylinder body, a low-pressure steam inlet, a first low-pressure steam outlet and a second low-pressure steam outlet provided on the second cylinder, the low-pressure steam inlet being communicated with the steam outlet of the second pressure booster in the second pressure booster through the second pipeline, the first low-pressure steam outlet being communicated with the steam curing pool through the third pipeline to provide a low-pressure steam to the steam curing pool, and the second low-pressure steam outlet being communicated with the third pressure booster through a fourth pipeline; and the third pressure booster comprises a third pressure booster body, a first steam inlet of the third pressure booster, a second steam inlet of the third pressure booster and a steam outlet of the third pressure booster provided on the third pressure booster body, the first steam inlet of the third pressure booster being communicated with the third high-pressure steam outlet of the first steam distributor, the second steam inlet of the third pressure booster being communicated with the second low-pressure steam outlet of the second steam distributor, and the steam outlet of the third pressure booster being communicated with each of the plurality of reaction kettles through a reaction steam channel; internal structures of the first pressure booster, the second pressure booster and the third pressure booster are the same, including a first steam chamber communicated with a steam inlet for introducing the high-pressure steam, a nozzle provided at an end of the first steam chamber, a mixing chamber provided in a steam injection direction of the nozzle and communicated with the nozzle, a second steam chamber communicated with the mixing chamber and a steam inlet for introducing the low-pressure steam, and a diffuser provided at another end of the mixing chamber, an outlet direction of the diffuser being communicated with a steam outlet; and the steam generating device is configured to transport the generated high-pressure steam of 2.5 MPa to the first steam distributor, and the high-pressure steam of 2.5 MPa enters the first pressure booster from the first high-pressure steam outlet and the first steam inlet of the first pressure booster, and is mixed with a low-pressure steam of 0.7 MPa from the power plant conveyed by the steam conveying pipeline so as to form a second pressure steam of 1.0 MPa; the second pressure steam of 1.0 MPa is transported to a steam storage tank through the steam outlet of the first pressure booster and the reaction steam channel in sequence, and then poured into each of the plurality of reaction kettles until a pressure in each of the plurality of reaction kettles reaches 1.0 MPa; and then a valve is closed to stop pouring the second pressure steam of 1.0 MPa until the pressure drops to 0.8 MPa, and then the valve is opened to continue pouring the second pressure steam of 1.0 MPa; and the high-pressure steam of 2.5 MPa enters the second pressure booster from the second high-pressure steam outlet and the first steam inlet of the second pressure booster, and is mixed with a steam of 0.1 MPa from the blowdown flash tank so as to form a first pressure steam of 0.3 MPa; the first pressure steam of 0.3 MPa enters the second steam distributor, the first pressure steam of 0.3 MPa then enters either into the steam curing pool through the first low-pressure steam outlet or enters into the third pressure booster through the second low-pressure steam outlet, which is mixed with the high-pressure steam of 2.5 MPa so as to form the second pressure steam of 1.0 MPa, which is conveyed to the steam storage tank through the reaction steam channel via the steam outlet of the third booster.

2 . The steam utilization system of the factory producing the concrete pipe pile according to claim 1 , wherein the reaction steam channel is provided with the steam storage tank the steam storage tank being communicated with the steam inlet of each of the plurality of reaction kettles, and each steam inlet being provided with the valve and a pressure monitor.

3 . The steam utilization system of the factory producing the concrete pipe pile according to claim 1 , wherein the first pressure is set to 0.3 MPa and t

Assignees

• Univ Guangdong Technology

Inventors

• Liu Xiaozhou
• Wen Jian
• Xie Zudong
• Wen Zelong

Classifications

• F22B33/185

  in combination with a steam accumulator · CPC title

• F22D11/06

  for returning condensate to boiler · CPC title

• F04F13/00

  Pressure exchangers · CPC title

• F04F5/16

  displacing elastic fluids · CPC title

• F04F5/18

  for compressing · CPC title