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CN-224228729-U - Composite heat and power cogeneration device

CN224228729UCN 224228729 UCN224228729 UCN 224228729UCN-224228729-U

Abstract

The utility model discloses a composite heat and power cogeneration device in the technical field of heating power generation equipment, which comprises a fixed tube-plate heat exchanger, a turbine generator and an ejector, wherein the fixed tube-plate heat exchanger comprises an end socket, a tube box shell ring, a tube plate, a heat exchange tube and a shell, a baffle is arranged in the fixed tube-plate heat exchanger and is used for dividing an inner cavity of the fixed tube-plate heat exchanger into a generating cavity, a medium-pressure evaporating cavity, a high-pressure evaporating cavity and a high-pressure absorbing cavity, the liquid refrigerant discharged from the generating cavity is heated by the medium-pressure evaporating cavity by utilizing recovered heat, so that the liquid refrigerant is subjected to phase change and then is used for driving the turbine generator to perform working power generation, the high-pressure absorbing cavity is mixed with gaseous refrigerant discharged from the ejector for heating by utilizing external lean liquid, so that the equipment has two functions of power generation and heating, and an external heat source sequentially passes through the medium-pressure evaporating cavity and the high-pressure evaporating cavity to absorb heat, so that the heat in the heat source is fully utilized.

Inventors

  • ZHU LINGHUI
  • JIANG YINGMING
  • CHEN HEGEN
  • GUO PANPAN
  • GUAN QINGSHAN
  • YAO CHUANHUI
  • XU CHAO

Assignees

  • 安徽普泛能源技术股份有限公司

Dates

Publication Date
20260512
Application Date
20250523

Claims (6)

  1. 1. The composite type heat and power cogeneration device comprises a fixed tube plate type heat exchanger, a turbine generator (10) and an ejector (11), and is characterized in that the fixed tube plate type heat exchanger comprises an end socket, a tube box shell ring (2), a tube plate, a heat exchange tube (3) and a shell (1), a partition plate (4) is arranged in the fixed tube plate type heat exchanger, and the partition plate (4) is used for dividing an inner cavity of the fixed tube plate type heat exchanger into a generating cavity (6), a medium-pressure evaporation cavity (7), a high-pressure evaporation cavity (8) and a high-pressure absorption cavity (9); The medium-pressure evaporation cavity (7) utilizes an external heat source to enable liquid-state refrigerant discharged by the generation cavity (6) to be changed into gaseous-state refrigerant, the high-pressure evaporation cavity (8) utilizes the external liquid-state refrigerant to recycle heat source heat after the medium-pressure evaporation cavity (7) is used, the turbine generator (10) utilizes the gaseous-state refrigerant discharged by the medium-pressure evaporation cavity (7) to perform work and power generation, and the high-pressure absorption cavity (9) utilizes external lean liquid to be mixed with the gaseous-state refrigerant discharged by the ejector (11) to perform heating.
  2. 2. The combined heat and power cogeneration device according to claim 1, wherein a secondary rich liquid inlet, a gaseous refrigerant inlet and a rich liquid outlet are arranged on a shell (1) of the high-pressure absorption cavity (9), and a heat carrier inlet and a heat carrier outlet are arranged on a tube box shell section (2) of the high-pressure absorption cavity (9); A liquid refrigerant inlet and a gaseous refrigerant outlet are formed in a shell (1) of the high-pressure evaporation cavity (8), and a heat source inlet and a heat source outlet are formed in a tube box shell section (2) of the high-pressure evaporation cavity (8); A liquid refrigerant inlet and a gaseous refrigerant outlet are formed in a shell (1) of the medium-pressure evaporation cavity (7), and a heat source inlet and a heat source outlet are formed in a tube box shell section (2) of the medium-pressure evaporation cavity (7); the shell (1) of the generation cavity (6) is provided with a rich liquid inlet, a gaseous refrigerant outlet and a secondary rich liquid outlet, and the tube box shell ring (2) of the generation cavity (6) is provided with a gaseous refrigerant inlet and outlet.
  3. 3. A combined heat and power cogeneration device according to claim 2, further comprising a pressure reducing valve (12) and an expansion valve (13), wherein the pressure reducing valve (12) is used for reducing the pressure of the rich liquid introduced into the generation chamber (6) from the high-pressure absorption chamber (9), and the expansion valve (13) is used for reducing the pressure of the liquid refrigerant introduced into the medium-pressure evaporation chamber (7) from the generation chamber (6).
  4. 4. The combined heat and power cogeneration device of claim 1, wherein the liquid distribution component (5) above the heat exchange tube (3) is arranged in the shell (1) of the generation cavity (6), the medium-pressure evaporation cavity (7), the high-pressure evaporation cavity (8) and the high-pressure absorption cavity (9).
  5. 5. A composite heat and power cogeneration apparatus according to claim 1, wherein said partition plate (4) is in the shape of a cross, and a heat insulating layer is provided on said partition plate (4).
  6. 6. A composite heat and power co-generator as claimed in claim 2 wherein the ejector (11) comprises a diffuser pipe (111), a buffer pipe (112), a reducing pipe (113), a mixing chamber (114) and an air inlet chamber (116) which are sequentially communicated from top to bottom, wherein a spray pipe (115), a reducing section (117) and a straight section (118) are arranged in the air inlet chamber (116), the straight section (118) is communicated with a high-pressure gaseous refrigerant outlet of the high-pressure evaporation cavity (8), and the diffuser pipe (111) is communicated with a high-pressure gaseous refrigerant inlet of the high-pressure absorption cavity (9).

Description

Composite heat and power cogeneration device Technical Field The utility model relates to the technical field of heating power generation equipment, in particular to a composite heat and power cogeneration device. Background In the industrial production process, a large amount of medium-low temperature waste heat is directly discharged into the environment to cause serious energy waste, at present, the industrial waste heat recovery mainly adopts a single heat exchanger or a steam generator to carry out simple heat energy conversion, only a simple heat supply or driving power generation device can be realized, the waste heat cannot be subjected to temperature opposite and cascade utilization, so that a large amount of medium-low temperature waste heat is not fully recovered, and the traditional waste heat recovery system can only realize single-function output (such as heat supply or power generation only) and has single function. Disclosure of utility model The utility model aims to provide a composite heat and power cogeneration device, which solves the problem that a large amount of medium and low temperature waste heat is not fully recovered in the prior art. The utility model provides a composite heat and power cogeneration device which comprises a fixed tube plate heat exchanger, a turbine generator and an ejector, wherein the fixed tube plate heat exchanger comprises an end socket, a tube box shell ring, a tube plate, a heat exchange tube and a shell; the medium-pressure evaporation cavity utilizes an external heat source to enable liquid-state refrigerant discharged by the generation cavity to be changed into gaseous-state refrigerant, the high-pressure evaporation cavity utilizes the external liquid-state refrigerant to recover heat source heat after the medium-pressure evaporation cavity is used, the turbine generator utilizes the gaseous-state refrigerant discharged by the medium-pressure evaporation cavity to perform work and power generation, and the high-pressure absorption cavity utilizes external lean liquid to be mixed with the gaseous-state refrigerant discharged by the ejector to perform heating. Preferably, a secondary rich liquid inlet, a gaseous refrigerant inlet and a rich liquid outlet are formed in the shell of the high-pressure absorption cavity, and a heat carrier inlet and a heat carrier outlet are formed in the tube box shell section of the high-pressure absorption cavity; A liquid refrigerant inlet and a gaseous refrigerant outlet are formed in the shell of the high-pressure evaporation cavity, and a heat source inlet and a heat source outlet are formed in a tube box shell ring of the high-pressure evaporation cavity; a liquid refrigerant inlet and a gaseous refrigerant outlet are formed in the shell of the medium-pressure evaporation cavity, and a heat source inlet and a heat source outlet are formed in a tube box shell ring of the medium-pressure evaporation cavity; The shell of the generation cavity is provided with a rich liquid inlet, a gaseous refrigerant outlet and a secondary rich liquid outlet, and the tube box shell section of the generation cavity is provided with a gaseous refrigerant inlet and a gaseous refrigerant outlet. Preferably, the combined heat and power cogeneration device further comprises a pressure reducing valve and an expansion valve, wherein the pressure reducing valve is used for reducing the pressure of the rich liquid introduced into the generation cavity from the high-pressure absorption cavity, and the expansion valve is used for reducing the pressure of the liquid refrigerant introduced into the medium-pressure evaporation cavity from the generation cavity. Preferably, the liquid distribution components above the heat exchange tubes are arranged in the shells of the generating cavity, the medium-pressure evaporating cavity, the high-pressure evaporating cavity and the high-pressure absorbing cavity. Preferably, the partition plate is cross-shaped, and a heat insulation layer is arranged on the partition plate. Preferably, the ejector comprises a diffuser pipe, a buffer pipe, a reducing pipe, a mixing chamber and an air inlet chamber which are sequentially communicated from top to bottom, wherein a spray pipe, a reducing section and a straight barrel section are arranged in the air inlet chamber, the straight barrel section is communicated with a high-pressure gaseous refrigerant outlet of the high-pressure evaporation cavity, and the diffuser pipe is communicated with a high-pressure gaseous refrigerant inlet of the high-pressure absorption cavity. Compared with the prior art, the utility model has the beneficial effects that: 1. The medium-pressure evaporation cavity utilizes the recovered heat to heat the liquid refrigerant discharged from the generation cavity, so that the liquid refrigerant is used for driving the turbine generator to perform working and power generation after being subjected to phase change, the high-pressure absorption ca