Thermal power plant delivery multi-pipe network heating and cooling system and operation method

A technology for thermal power plants and cooling systems, applied in heating systems, piping systems, hot water central heating systems, etc., can solve the problems of insufficient power supply, slow development of cooling load, and poor operation benefits, etc. Pipeline utilization, improving utilization efficiency, and reducing the effect of low prices

Inactive Publication Date: 2021-05-25
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the end of 2005, the national installed capacity and electricity consumption reached 508.41 million kW and 2474.7 billion kWh respectively, of which thermal power installed capacity was 384.13 million kW, accounting for 75.6% of the total installed capacity. ease
[0003] Even though many thermal power plants have undergone heating transformation, and southern thermal power plants have even introduced regional cooling pipe networks, there is a huge difference in the heating load or cooling load of these pipe network users in winter and summer cooling load, and many newly built areas Due to the slow development of the cooling load actually used by the buildings in thermal power plant district cooling projects, many projects are planned very grandly, but the actual operating efficiency is very poor, and most projects are operating at a loss

Method used

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  • Thermal power plant delivery multi-pipe network heating and cooling system and operation method
  • Thermal power plant delivery multi-pipe network heating and cooling system and operation method
  • Thermal power plant delivery multi-pipe network heating and cooling system and operation method

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Embodiment 1

[0038] Please refer to figure 1 , figure 1 An overall schematic diagram of an implementable system provided by the present invention; the power plant provides steam to industrial steam users and steam absorption refrigeration users through industrial steam / compressed air equipment; Provide compressed air.

[0039] The power plant provides hot water to heating users, domestic hot water users and industrial hot water users respectively through the hot water heating pipe network.

[0040] The power plant provides cooling energy to air-conditioning cooling users, supermarket cooling users, and data center cooling users through the regional cooling pipe network.

Embodiment 2

[0042] Set up at least two transmission pipelines with different diameters in the transmission pipeline, and the transmission pipelines with different diameters are arranged in parallel; select the most matching diameter pipeline to transport industrial steam to industrial users; according to the increase of industrial load, gradually transition from small diameter pipelines to Large-diameter pipelines, so as to give full play to the optimal operation level of the project.

[0043] refer to figure 2, industrial steam users include beverage production companies, tobacco production companies, paper mills, shipyards, feed production plants, beer production plants, oil production plants, tire production plants and dairy production plants; industrial steam users also include hospitals and hotels; will be different The use of industrial steam users who require different temperatures and pressures is included in the supply objects, which can better realize the use of steam with temp...

Embodiment 3

[0047] In the early stage of project implementation, small-diameter pipelines were selected to supply regional heating and hot water to terminal buildings. As the heating area increases, switch to large-diameter pipelines to supply heating areas with larger building areas.

[0048] refer to image 3 , similarly, the present invention regards hot water users with different hot water consumption as heating objects at the same time, so as to realize flexible configuration of hot water supply and full utilization of heat energy.

[0049] In summer, pipelines with appropriate flow calibers are used to supply domestic hot water demand, avoiding the original mode of only winter heating services, and increasing the summer benefits of thermal power plant heating.

[0050] The operation of circulating water in heating networks from small diameter to large diameter pipelines avoids the problems of too few heat users in the initial stage of many new heating projects and the low efficiency...

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Abstract

The invention discloses a thermal power plant delivery multi-pipe network heating and cooling system and an operation method. The thermal power plant delivery multi-pipe network heating and cooling system comprises a generator set, a water treatment system, a purified water production system, a compressed air system and a refrigerating system, and further comprises a delivery multi-pipe network multi-working medium conveying pipeline; a pipeline in the delivery multi-pipe-network multi-working-medium delivery pipeline is made of any one or combination of high-temperature-resistant and low-temperature-resistant special steel, PVC (polyvinyl chloride) and composite materials, the pipeline is coated with a heat preservation layer, and delivery working media such as hot water, cold water, steam and compressed gas working media are switched. Urban heat energy, cold energy, steam and compressed gas are integrated in one plant area, the utilization efficiency of a thermal generator set is improved, and meanwhile construction of other heat supply plants, steam sources and compressed gas stations can be effectively reduced; centralized energy supply and optimal configuration can be realized; and different media are used in different service cycles, the same pipeline is used for conveying media with different energy, the utilization rate of the pipeline can be increased, and investment and construction resources are reduced.

Description

technical field [0001] The invention belongs to the technical field of regional energy, and in particular relates to a heat supply and cooling system and an operation method of a thermal power plant sending out a multi-pipe network. Background technique [0002] In recent years, the speed of development of the electric power industry and the application of new technologies have greatly exceeded people's expectations. At the end of 2005, the national installed capacity and electricity consumption reached 508.41 million kW and 2474.7 billion kWh respectively, of which thermal power installed capacity was 384.13 million kW, accounting for 75.6% of the total installed capacity. ease. In 2020, the originally planned installed capacity of 900 million kW may be adjusted to 1 billion kW, and the installed capacity of coal power may be adjusted from 580 million kW to 650 million kW. At present, due to the large-scale construction of thermal power plants, the supply of coal, electri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D3/10F24F5/00F17D1/02F17D1/06
CPCF24D3/10F24F5/0003F24F5/0014F17D1/06F17D1/02
Inventor 杨豫森李卫东王保民黄永琪
Owner HUANENG CLEAN ENERGY RES INST
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