A heat pump heating system with deep exhaust steam waste heat recovery

A heating system and jet heat pump technology, applied in heat recovery systems, heating systems, household heating, etc., can solve problems such as increasing system investment and operating costs, affecting system performance, and reducing the quality of low-temperature heat sources. The effect of system energy utilization efficiency, system performance improvement, and pump power saving

Active Publication Date: 2020-06-23
DATANG BEIJING ENERGY MANAGEMENT +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This solution increases system investment and operating costs, and reduces the quality of low-temperature heat sources, affecting system performance

Method used

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  • A heat pump heating system with deep exhaust steam waste heat recovery
  • A heat pump heating system with deep exhaust steam waste heat recovery
  • A heat pump heating system with deep exhaust steam waste heat recovery

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Embodiment Construction

[0013] Attached below Figure 1-3 To further describe the present invention, it should be understood that the content described here is only for illustrating and explaining the present invention, and is not intended to limit the present invention.

[0014] Jet heat pump is a simple structure, no mechanical moving parts, safe and reliable energy-saving device, widely used in many fields. figure 1 A schematic diagram of the jet heat pump principle is given. The jet heat pump includes a high-pressure steam inlet at the front, a low-pressure steam inlet at the side, and a medium-pressure steam outlet at the end; Steam and low-pressure steam enter the mixing chamber and mix to form medium-pressure steam, which is finally output from the medium-pressure steam outlet at the end. Introduce high-pressure steam from the high-pressure steam inlet as power steam, expand through the nozzle to form a high-speed steam flow, and the pressure drops to form a low-pressure area. The low-pressur...

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Abstract

The invention provides a heat pump heating system capable of achieving deep dead steam waste heat recovery. The heat pump heating system comprises an absorber, a generator, a condenser, a first injection-type heat pump and a heat network loop; the absorber is externally connected with a turbine steam-exhaust pipeline; a liquid outlet of the absorber communicates with the generator through a pipeline, the generator is internally provided with a first heater and the condenser, and the first heater heats a solution in the generator; and a liquid outlet of the generator communicates with the absorber through a pipeline, a heat network pipeline sequentially penetrates through the absorber and the condenser in the generator and then is output, turbine extracted-steam is connected with a high-pressure steam inlet of a first injector, a low-pressure steam inlet of the first injection-type heat pump is connected to a steam outlet in the upper part of the generator, and a medium-pressure steam outlet of the first injection-type heat pump is connected with a first heater inlet of the generator. The heat pump system can operate efficiently and safely in the unit wide-load range, driving energyof a heat pump is improved, thus more dead steam waste heat can be recovered, and the energy utilizing efficiency of the system is increased.

Description

technical field [0001] The invention belongs to the field of recovery and energy saving of exhaust steam waste heat in power plants, and in particular relates to a heat pump heating system for deep recovery of exhaust steam waste heat. Background technique [0002] Efficient recovery and utilization of steam turbine waste heat of thermal power units is of great significance to improve energy utilization efficiency and reduce environmental pollution in my country. It is an effective means to recover and utilize the waste heat by adopting the steam-type lithium bromide absorption heat pump to recover the exhaust heat of the steam turbine for external heat supply. In view of the current reality that my country's thermal power units frequently participate in peak regulation and operate in a wide load range for a long time, the extraction pressure as the driving heat source of the absorption heat pump will also change within a certain range. In order to make the heat pump system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D15/04F24D19/00F01K17/02F04F5/16
CPCY02B30/52
Inventor 李本锋张晓明刘忠秋邱寅晨张钧泰张国柱陈伟雄
Owner DATANG BEIJING ENERGY MANAGEMENT
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