Turbine flue gas driven lithium bromide unit simultaneous refrigerating and heating system

Abstract

The lithium bromide unit is divided into a high-temperature generator and a low-temperature generator, in the high-temperature generator, after air-conditioning warm water is heated, the heated air-conditioning warm water is conveyed into a first combined air-conditioning box through an air-conditioning warm water pump to exchange heat with air, and the heated air-conditioning warm water is conveyed into a second combined air-conditioning box through an air-conditioning warm water pump; the low-temperature air-conditioning hot water after heat exchange flows back to the high-temperature generator, and the air after heat exchange flows back to the first combined air-conditioning box through an air return pipe after being conveyed to a first user to complete heating; after air conditioner cold water in the low-temperature generator is refrigerated, the air conditioner cold water is conveyed into the second combined air conditioner box through an air conditioner cold water pump to exchange heat with air, the high-temperature air conditioner cold water after heat exchange flows back to the low-temperature generator, and the air after heat exchange flows back to the second combined air conditioner box through an air return pipe after being conveyed to a second user to complete refrigeration. According to the heat absorption and refrigeration principle of the lithium bromide unit, heat absorption and refrigeration are conducted through two systems, air conditioner warm water and air conditioner cold water are provided at the same time, and the functions of refrigeration and heating are achieved at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery and reuse, and in particular to a turbine flue gas driven lithium bromide unit simultaneous refrigeration and heating system. Background Art

[0002] At present, the workshop of the offshore platform adopts split fresh air air conditioner, and the living building adopts central air conditioner. The living building of the platform needs to provide cooling in summer and heating in winter. Due to the large heat dissipation of the equipment in the workshop, cooling needs to be provided all year round to ensure the stable operation of the equipment. Both central air conditioners and split air conditioners are driven by motors and are large electricity users on the platform. In order to save electricity on the platform, the high-temperature flue gas of the turbine is used to drive the lithium bromide unit to provide cooling and heating for the living building and the workshop. Due to the large heat dissipation of some workshop equipment, the room temperature is high in winter, which affects the operation of the equipment. Ordinary air conditioners have poor cooling effect in low-temperature environments in winter. The continuous heat dissipation of the equipment causes the room temperature to be higher than the maximum operating temperature of the equipment, which affects the operation of the equipment. It is necessary to invent an air conditioning system that has stable cooling in winter, can cool and heat at the same time, and save electricity. Summary of the invention

[0003] In view of this, the present invention aims to propose a turbine flue gas driven lithium bromide unit simultaneous cooling and heating system to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present invention is implemented as follows: a turbine flue gas driven lithium bromide unit simultaneous cooling and heating system, comprising a turbine, a turbine flue gas driven lithium bromide unit, a heating pipeline, a refrigeration pipeline and a cooling pipeline, the turbine flue gas driven lithium bromide unit comprising a high temperature generator and a low temperature generator, the high temperature generator and the low temperature generator are connected by a pipeline, the smoke outlet of the turbine is provided with two branches, one branch is connected with a turbine silencer, a flue gas induced draft fan and a flue gas regulating valve in sequence, the other branch is connected with a smoke outlet pipe, the air outlet of the flue gas regulating valve is connected with the air inlet of the high temperature generator, and the air outlet of the high temperature generator is connected with the smoke outlet pipe; the heating zone connection port of the high temperature generator is connected with the heating pipeline; the refrigeration zone connection port of the low temperature generator is connected with the refrigeration pipeline, and the cooling zone connection port of the low temperature generator is connected with the cooling pipeline; the end of the heating pipeline is connected with a first user, and the end of the refrigeration pipeline is connected with a second user;

[0005] A water inlet pipeline and a water return pipeline are connected between the heating pipeline and the cooling pipeline;

[0006] When the turbine is working, it can realize heating only for the first user or cooling only for the second user, or cooling for the first and second users at the same time, or heating for the first user and cooling for the second user at the same time, or heating for the first user and the second user at the same time.

[0007] Furthermore, a flue gas heat exchange tube and an air conditioning warm water heat exchange tube are installed in the high temperature generator. At the same time, a lithium bromide solution is placed in the high temperature generator. The flue gas heat exchange tube is immersed in the lithium bromide solution. When the lithium bromide solution is heated by the flue gas heat exchange tube, water vapor is generated. The air conditioning warm water heat exchange tube is located on the upper part of the high temperature generator and exchanges heat with the water vapor on the upper part.

[0008] Furthermore, three pipelines are connected between the high temperature generator and the low temperature generator, a dilute solution reflux valve is installed on the first pipeline, a concentrated solution outlet regulating valve is installed on the second pipeline, and a refrigerant steam outlet regulating valve is installed on the third pipeline.

[0009] Furthermore, the low-temperature generator includes a condenser, a vacuum evaporator and an absorber, the liquid inlet of the absorber is connected to the liquid outlet of the condenser tube provided in the condenser, the liquid outlet of the absorber is connected to the cooling water return shut-off valve of the cooling pipeline, the cooling water outlet shut-off valve of the cooling pipeline is connected to the liquid inlet of the condenser tube provided in the condenser; the liquid outlet of the vacuum evaporator is connected to the cold water outlet shut-off valve of the refrigeration pipeline, and the liquid inlet of the vacuum evaporator is connected to the cold water return shut-off valve of the refrigeration pipeline;

[0010] A first spray pipe and a second spray pipe are also provided in the low-temperature generator. One end of the first spray pipe is arranged above the vacuum evaporator, and the other end is connected to the inside of the condenser; one end of the second spray pipe is arranged above the absorber, and the other end is connected to the pipeline installed with the concentrated solution outlet regulating valve.

[0011] Furthermore, the lithium bromide solution in the high temperature generator is heated by the flue gas heat exchange tube to generate water vapor, the water vapor enters the condenser through the refrigerant steam outlet regulating valve and is cooled into water, the cooled water is sprayed on the vacuum evaporator heat exchange tube through the first spray pipe and evaporates into water vapor again, so that the air conditioning cold water in the vacuum evaporator heat exchange tube can be cooled;

[0012] The lithium bromide concentrated solution in the high-temperature generator enters the second spray pipe through the concentrated solution outlet regulating valve and is sprayed on the absorber heat exchange tube, transferring heat to the cooling water in the absorber heat exchange tube, while absorbing water vapor to become a lithium bromide dilute solution. The lithium bromide dilute solution flows back to the high-temperature generator through the dilute solution reflux valve and is heated again.

[0013] Furthermore, the heating pipeline includes an air-conditioning warm water pump, a first combined air-conditioning box, a warm water outlet shut-off valve, a warm water return shut-off valve and a warm water regulating valve. One end of the warm water outlet shut-off valve is connected to the liquid outlet of the air-conditioning warm water heat exchange pipe, and the other end is connected to the liquid inlet of the air-conditioning warm water pump. The liquid outlet of the air-conditioning warm water pump is connected to one end of the warm water regulating valve, and the other end of the warm water regulating valve is connected to the liquid inlet of the first combined air-conditioning box. The liquid outlet of the first combined air-conditioning box is connected to the liquid inlet of the air-conditioning warm water heat exchange pipe through the warm water return shut-off valve; the air supply outlet of the first combined air-conditioning box is connected to one end of the first air supply pipe, and the other end of the first air supply pipe is connected to the first user air inlet, the first user air outlet is connected to one end of the first return air duct, and the other end of the first return air duct is connected to the return air outlet of the first combined air-conditioning box.

[0014] Furthermore, the refrigeration pipeline includes an air-conditioning cold water pump, a second combined air-conditioning box, a cold water outlet shut-off valve, a cold water return shut-off valve and a cold water regulating valve. One end of the cold water outlet shut-off valve is connected to the liquid outlet of the vacuum evaporator, and the other end is connected to the liquid inlet of the air-conditioning cold water pump. The liquid outlet of the air-conditioning cold water pump is connected to one end of the cold water regulating valve, and the other end of the cold water regulating valve is connected to the liquid inlet of the second combined air-conditioning box. The liquid outlet of the second combined air-conditioning box is connected to the liquid inlet of the vacuum evaporator through the cold water return shut-off valve; the air supply outlet of the second combined air-conditioning box is connected to one end of the second air supply pipe, the other end of the second air supply pipe is connected to the second user air inlet, the second user air outlet is connected to the second return air duct, and the other end of the second return air duct is connected to the return air outlet of the second combined air-conditioning box.

[0015] Further, one end of the water inlet pipeline is connected to the liquid outlet of the air conditioning cold water pump, and the other end is installed with a T-type three-way valve, the T-type three-way valve is provided with three interfaces, the first interface of the T-type three-way valve is connected to the liquid outlet of the warm water regulating valve, the second interface is connected to the water inlet pipeline, and the third interface of the T-type three-way valve is connected to the liquid inlet of the first combined air conditioning box;

[0016] One end of the return water pipeline is connected to the liquid outlet of the first combined air conditioning box, and the other end is connected to the liquid inlet of the cold water return water shut-off valve. At the same time, the shut-off valve is installed on the return water pipeline.

[0017] Furthermore, the cooling pipeline includes a cooling water pump, a seawater plate heat exchanger, a cooling water outlet shut-off valve, a cooling water return shut-off valve, a cooling water regulating valve, a seawater inlet and a seawater outlet. The cold side liquid inlet of the seawater plate heat exchanger is connected to the seawater inlet, the cold side liquid outlet is connected to the seawater outlet, the hot side liquid outlet of the seawater plate heat exchanger is connected to the liquid inlet of the cooling water pump, and at the same time, the liquid outlet of the cooling water pump is connected to the liquid inlet of the condenser tube in the condenser through the cooling water regulating valve and the cooling water outlet shut-off valve in sequence, the liquid inlet of the cooling water return shut-off valve is connected to the liquid outlet of the absorber, and the liquid outlet of the cooling water return shut-off valve is connected to the liquid inlet of the hot side of the seawater plate heat exchanger.

[0018] Compared with the prior art, the turbine flue gas driven lithium bromide unit simultaneous cooling and heating system described in the present invention has the following advantages: a turbine flue gas driven lithium bromide unit simultaneous cooling and heating system, which can simultaneously cool and heat in winter, and the cooling system and the heating system work independently, and can provide one cooling and one heating for different users at the same time; when cooling in summer, the air-conditioning warm water pump is stopped, the warm water outlet shut-off valve and the warm water return shut-off valve are closed, and the T-type three-way valve is connected to the air-conditioning cold water pump, so that cooling can be provided for different places at the same time; when heating in winter, the air-conditioning cold water pump is stopped, the cold water outlet shut-off valve and the cold water return shut-off valve are closed, and the T-type three-way valve is connected to the air-conditioning warm water pump, so that heating can be provided for different places. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the turbine flue gas driven lithium bromide unit and simultaneous cooling and heating system of the present invention.

[0021] Description of reference numerals:

[0022] 1. Turbine; 2. Turbine flue gas driven lithium bromide unit; 3. Air conditioning warm water pump; 4. Air conditioning cold water pump; 5. Cooling water pump; 6. First combined air conditioning box; 7. Second combined air conditioning box; 8. Seawater plate heat exchanger; 9. First user; 10. Second user; 11. Flue gas induced draft fan; 12. Turbine silencer; 13. First spray pipe; 14. Second spray pipe; 15. Water inlet pipeline; 16. Water return pipeline; 17. First air supply pipe; 18. First return air pipe; 19. Second air supply pipe; 20. Second return air pipe;

[0023] 2-1, high temperature generator; 2-1-1, flue gas heat exchange tube; 2-1-2, air conditioning warm water heat exchange tube;

[0024] 2-2, low temperature generator; 2-2-1, condenser; 2-2-2, vacuum evaporator; 2-2-3, absorber;

[0025] V1, dilute solution reflux valve; V2, refrigerant steam outlet regulating valve; V3, warm water outlet shut-off valve; V4, warm water return shut-off valve; V5, cold water outlet shut-off valve; V6, cold water return shut-off valve;

[0026] V7, cooling water outlet shut-off valve; V8, cooling water return shut-off valve; V9, T-type three-way valve; V10, flue gas regulating valve; V11, shut-off valve; V12, concentrated solution outlet regulating valve; V13, warm water regulating valve; V14, cold water regulating valve; V15, cooling water regulating valve;

[0027] P1, seawater inlet; P2, seawater outlet; P3, smoke outlet. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] The present invention relates to a system for simultaneously cooling and heating a lithium bromide unit driven by turbine flue gas, wherein high-temperature turbine flue gas enters a turbine flue gas driven lithium bromide unit 2 to drive a lithium bromide solution for simultaneous cooling and heating. The turbine flue gas driven lithium bromide unit 2 is divided into a high-temperature generator 2-1 and a low-temperature generator 2-2. In the high-temperature generator 2-1, after the air conditioning warm water is heated, it is transported by an air conditioning warm water pump 3 to a first combined air conditioning box 6 for heat exchange with air, and the low-temperature air conditioning hot water after heat exchange flows back to the high-temperature generator 2-1 for recycling. After the air after heat exchange is transported to a user to complete heating, it flows back to the first combined air conditioning box 6 for recycling through a return air duct; after the air conditioning cold water is cooled in the low-temperature generator 2-2, it is transported by an air conditioning cold water pump 4 to a second combined air conditioning box 7 for heat exchange with air, and the high-temperature air conditioning cold water after heat exchange flows back to the low-temperature generator 2-2 for recycling. After the air after heat exchange is transported to a user to complete cooling, it flows back to the second combined air conditioning box 7 for recycling through a return air duct. This system can be used in two different places where simultaneous cooling, heating and air conditioning are required, as well as offshore platforms.

[0031] like Figure 1As shown, the present invention is a turbine flue gas driven lithium bromide unit simultaneous cooling and heating system, comprising a turbine 1, a turbine flue gas driven lithium bromide unit 2, a heating pipeline, a refrigeration pipeline and a cooling pipeline, the turbine flue gas driven lithium bromide unit 2 comprises a high temperature generator 2-1 and a low temperature generator 2-2, the high temperature generator 2-1 and the low temperature generator 2-2 are connected by pipelines, specifically, three pipelines are connected between the high temperature generator 2-1 and the low temperature generator 2-2, a dilute solution reflux valve V1 is installed on the first pipeline, a concentrated solution outlet regulating valve V12 is installed on the second pipeline, and a refrigerant steam outlet regulating valve V2 is installed on the third pipeline. The smoke outlet of the turbine 1 is provided with two branches, one of which is connected with the turbine silencer 12, the smoke exhaust fan 11, and the smoke regulating valve V10 in sequence, and the other branch is connected with the smoke outlet pipe P3, the outlet of the smoke regulating valve V10 is connected with the air inlet of the high temperature generator 2-1, and the outlet of the high temperature generator 2-1 is connected with the smoke outlet pipe P3; the heating zone connection port of the high temperature generator 2-1 is connected with the heating pipeline; the cooling zone connection port of the low temperature generator 2-2 is connected with the cooling pipeline, and the cooling zone connection port of the low temperature generator 2-2 is connected with the cooling pipeline; the end of the heating pipeline is connected with the first user 9, and the end of the cooling pipeline is connected with the second user 10;

[0032] When the turbine 1 is working, the heat absorption and refrigeration principle of the lithium bromide unit is utilized to separate the heat absorption and refrigeration into two systems for operation, so that it is possible to realize heating only for the first user 9 or cooling only for the second user 10, or cooling for both the first user 9 and the second user 10 at the same time, or providing air-conditioning warm water and air-conditioning cold water at the same time, realizing the function of simultaneous cooling and heating, that is, realizing heating for the first user 9 and cooling for the second user 10 at the same time, or heating for both the first user 9 and the second user 10 at the same time. In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] A flue gas heat exchange tube 2-1-1 and an air conditioning warm water heat exchange tube 2-1-2 are installed in the high temperature generator 2-1. At the same time, a lithium bromide solution is placed in the high temperature generator 2-1. The flue gas heat exchange tube 2-1-1 is immersed in the lithium bromide solution. When the lithium bromide solution is heated by the flue gas heat exchange tube 2-1-1, water vapor will be generated. After the water vapor is generated, it will float on the upper part of the inner cavity of the high temperature generator 2-1. The air conditioning warm water heat exchange tube 2-1-2 is located on the upper part of the high temperature generator to exchange heat with the water vapor on the upper part.

[0034] The low-temperature generator 2-2 includes a condenser 2-2-1, a vacuum evaporator 2-2-2 and an absorber 2-2-3. The liquid inlet of the absorber 2-2-3 is connected to the liquid outlet of the condenser tube provided in the condenser 2-2-1, the liquid outlet of the absorber 2-2-3 is connected to the cooling water return shut-off valve V8 of the cooling pipeline, and the cooling water outlet shut-off valve V7 of the cooling pipeline is connected to the liquid inlet of the condenser tube provided in the condenser 2-2-1; the liquid outlet of the vacuum evaporator 2-2-2 is connected to the cold water outlet shut-off valve V5 of the refrigeration pipeline, and the liquid inlet of the vacuum evaporator 2-2-2 is connected to the cold water return shut-off valve V6 of the refrigeration pipeline;

[0035] A first spray pipe 13 and a second spray pipe 14 are also provided in the low-temperature generator 2-2. One end of the first spray pipe 13 is provided above the vacuum evaporator 2-2-2, and the other end is connected to the interior of the condenser 2-2-1. One end of the second spray pipe 14 is provided above the absorber 2-2-3, and the other end is connected to a pipeline on which a concentrated solution outlet regulating valve V12 is installed.

[0036] The lithium bromide solution in the high-temperature generator 2-1 is heated by the flue gas heat exchange tube 2-1-1 to generate water vapor, and the water vapor enters the condenser 2-2-1 through the refrigerant steam outlet regulating valve V2 to be cooled into water, and the cooled water is sprayed on the vacuum evaporator 2-2-2 heat exchange tube through the first spray pipe 13 and evaporates into water vapor again, so as to realize the air conditioning cold water cooling in the vacuum evaporator 2-2-2 heat exchange tube;

[0037] The concentrated lithium bromide solution in the high-temperature generator 2-1 enters the second spray pipe 14 through the concentrated solution outlet regulating valve V12, and is sprayed on the heat exchange tube of the absorber 2-2-3, transferring heat to the cooling water in the heat exchange tube of the absorber 2-2-3, while absorbing water vapor to become a dilute lithium bromide solution. The dilute lithium bromide solution flows back to the high-temperature generator 2-1 through the dilute solution reflux valve V1 and is heated again.

[0038] The heating pipeline includes an air-conditioning warm water pump 3, a first combined air-conditioning box 6, a warm water outlet shut-off valve V3, a warm water return shut-off valve V4 and a warm water regulating valve V13. One end of the warm water outlet shut-off valve V3 is connected to the liquid outlet of the air-conditioning warm water heat exchange pipe 2-1-2, and the other end is connected to the liquid inlet of the air-conditioning warm water pump 3. The liquid outlet of the air-conditioning warm water pump 3 is connected to one end of the warm water regulating valve V13, and the other end of the warm water regulating valve V13 is connected to the liquid inlet of the first combined air-conditioning box 6. The liquid outlet of the first combined air-conditioning box 6 is connected to the liquid inlet of the air-conditioning warm water heat exchange pipe 2-1-2 through the warm water return shut-off valve V4; the air supply outlet of the first combined air-conditioning box 6 is connected to one end of the first air supply pipe 17, and the other end of the first air supply pipe 17 is connected to the air inlet of the first user 9. The air outlet of the first user 9 is connected to one end of the first return air pipe 18, and the other end of the first return air pipe 18 is connected to the return air outlet of the first combined air-conditioning box 6.

[0039] The refrigeration pipeline includes an air-conditioning cold water pump 4, a second combined air-conditioning box 7, a cold water outlet shut-off valve V5, a cold water return shut-off valve V6 and a cold water regulating valve V14. One end of the cold water outlet shut-off valve V5 is connected to the liquid outlet of the vacuum evaporator 2-2-2, and the other end is connected to the liquid inlet of the air-conditioning cold water pump 4. The liquid outlet of the air-conditioning cold water pump 4 is connected to one end of the cold water regulating valve V14, and the other end of the cold water regulating valve V14 is connected to the liquid inlet of the second combined air-conditioning box 7. The liquid outlet of the second combined air-conditioning box 7 is connected to the liquid inlet of the vacuum evaporator 2-2-2 through the cold water return shut-off valve V6; the air supply outlet of the second combined air-conditioning box 7 is connected to one end of the second air supply pipe 19, and the other end of the second air supply pipe 19 is connected to the air inlet of the second user 10. The air outlet of the second user 10 is connected to the second return air duct 20, and the other end of the second return air duct 20 is connected to the return air outlet of the second combined air-conditioning box 7.

[0040] There are two pipelines connected between the heating pipeline and the cooling pipeline, one is the water inlet pipeline 15, and the other is the water return pipeline 16; one end of the water inlet pipeline 15 is connected to the liquid outlet of the air conditioning cold water pump 4, and the other end is installed with a T-type three-way valve V9, and the T-type three-way valve V9 is provided with three interfaces, the first interface of the T-type three-way valve V9 is connected to the liquid outlet of the warm water regulating valve V13, the second interface is connected to the water inlet pipeline 15, and the third interface of the T-type three-way valve V9 is connected to the liquid inlet of the first combined air conditioning box 6;

[0041] One end of the return water pipeline 16 is connected to the liquid outlet of the first combined air conditioning box 6, and the other end is connected to the liquid inlet of the cold water return shut-off valve V6. At the same time, a shut-off valve V11 is installed on the return water pipeline 16.

[0042] The cooling pipeline includes a cooling water pump 5, a seawater plate heat exchanger 8, a cooling water outlet shut-off valve V7, a cooling water return shut-off valve V8, a cooling water regulating valve V15, a seawater inlet P1 and a seawater outlet P2. The cold side liquid inlet of the seawater plate heat exchanger 8 is connected to the seawater inlet P1, and the cold side liquid outlet is connected to the seawater outlet (P2). The hot side outlet of the seawater plate heat exchanger 8 is connected to the liquid inlet of the cooling water pump 5. At the same time, the liquid outlet of the cooling water pump 5 is connected to the liquid inlet of the condenser in the condenser 2-2-1 through the cooling water regulating valve V15 and the cooling water outlet shut-off valve V7 in sequence. The liquid inlet of the cooling water return shut-off valve V8 is connected to the liquid outlet of the absorber 2-2-3, and the liquid outlet of the cooling water return shut-off valve V8 is connected to the hot side liquid inlet of the seawater plate heat exchanger 8. The seawater plate heat exchanger 8 is an existing technology, and its cold side medium is seawater, and the hot side medium is cooling water. In actual application, seawater enters the cold side of the seawater plate heat exchanger 8 from the seawater inlet P1, exchanges heat with the cooling water in the seawater plate heat exchanger 8, and then flows out from the seawater outlet P2, thereby cooling the cooling water.

[0043] In the actual working process, the turbine 1, the flue gas induced draft fan 11, the flue gas regulating valve V10, the turbine flue gas driven lithium bromide unit 2, the high temperature generator 2-1 and the flue gas outlet pipe P3 constitute the high temperature heat absorption system of the lithium bromide unit;

[0044] The high temperature generator 2-1, the refrigerant steam outlet regulating valve V2, the low temperature generator 2-2, the concentrated solution outlet regulating valve V12 and the dilute solution reflux valve V1 constitute the turbine flue gas driven lithium bromide unit 2;

[0045] The high temperature generator 2-1, the warm water outlet shut-off valve V3, the air conditioning warm water pump 3, the warm water regulating valve V13, the T-type three-way valve V9, the first combined air conditioning box 6, the first user 9 and the warm water return shut-off valve V4 constitute a heating system;

[0046] The refrigeration system has two modes, one is a mode for providing cooling only to the second user 10, in which the low-temperature generator 2-2, the cold water outlet shut-off valve V5, the air conditioning cold water pump 4, the cold water regulating valve V14, the second combined air conditioning box 7, the second user 10, the cold water return shut-off valve V6 and the low-temperature generator 2-2 constitute the refrigeration system;

[0047] The other mode is to provide cooling to the first user 9 and the second user 10 at the same time. At this time, the low-temperature generator 2-2, the cold water outlet shut-off valve V5, the air-conditioning cold water pump 4, the cold water regulating valve V14, the T-type three-way valve V9, the first combined air-conditioning box 6, the second combined air-conditioning box 7, the first user 9, the second user 10, the shut-off valve V11 and the cold water return shut-off valve V6 constitute the refrigeration system.

[0048] The cooling water outlet shut-off valve V7, cooling water regulating valve V15, cooling water pump 5, seawater plate heat exchanger 8, cooling water return shut-off valve V8 and low-temperature generator 2-2 constitute a cooling system;

[0049] The high-temperature flue gas generated by the turbine 1 passes through the turbine silencer 12 and is sent to the high-temperature generator 2-1 by the flue gas induced draft fan 11. The lithium bromide solution is heated to 140°C through the flue gas heat exchange pipe 2-1-1 to generate water vapor. The high-temperature flue gas is reduced to about 170°C and then discharged from the smoke outlet pipe P3.

[0050] When heating the first user 9, the lithium bromide solution in the high temperature generator 2-1 is heated to 140°C by the flue gas heat exchange pipe 2-1-1 to generate water vapor, and the generated water vapor heats the air conditioning warm water in the air conditioning warm water heat exchange pipe 2-1-2, and heats the air conditioning warm water to 65°C. The air conditioning warm water pump 3 transports the heated air conditioning warm water to the first combined air conditioning box 6 for heat exchange with the air. After the air conditioning warm water is heat exchanged, the temperature is reduced to 55°C. The low-temperature air conditioning warm water after heat exchange flows back to the air conditioning warm water heat exchange pipe 2-1-2 for cyclic heating. After the heat exchange, the air is transported to the first user 9 by the first air supply pipe 17 to complete heating, and then flows back to the first combined air conditioning box 6 through the first return air pipe 18 for recycling. The warm water regulating valve V13 installed at the outlet of the air conditioning warm water pump 3 is used to adjust the warm water outlet flow rate.

[0051] When cooling the second user 10, the lithium bromide solution in the high-temperature generator 2-1 is heated to 140°C by the flue gas heat exchange tube 2-1-1 to generate water vapor. The water vapor enters the condenser 2-2-1 through the refrigerant steam outlet regulating valve V2 and is cooled into water. The cooled water is sprayed on the heat exchange tube of the vacuum evaporator 2-2-2 through the first spray pipe 13 and evaporates into water vapor again, so that the air-conditioning cold water in the heat exchange tube of the vacuum evaporator 2-2-2 is cooled to 7°C.

[0052] The concentrated lithium bromide solution in the high-temperature generator 2-1 enters the second spray pipe 14 through the concentrated solution outlet regulating valve V12, and is sprayed on the heat exchange tube of the absorber 2-2-3, transferring heat to the cooling water in the heat exchange tube of the absorber 2-2-3, while absorbing water vapor to convert the concentrated lithium bromide solution into a dilute solution. The diluted lithium bromide solution flows back to the high-temperature generator 2-1 through the dilute solution reflux valve V1 and is heated again.

[0053] The air conditioning cold water in the heat exchange tube of the vacuum evaporator 2-2-2 is cooled to 7°C and transported by the air conditioning cold water pump 4 to the second combined air conditioning box 7 for heat exchange with the air. The air conditioning cold water temperature after heat exchange rises to 14°C and then flows back to the vacuum evaporator 2-2-2 for recycling. The air after heat exchange is transported to the second user 10 by the second air supply pipe 19 to complete the cooling, and then flows back to the second combined air conditioning box 7 for recycling through the second return air pipe 20. The cold water regulating valve V14 installed at the outlet of the air conditioning cold water pump 4 is used to adjust the cold water flow.

[0054] The cooling water pump 5 delivers cooling water to the condenser tube of the condenser 2-2-1, condenses the steam in the condenser 2-2-1 into water, and then the cooling water in the condenser tube of the condenser 2-2-1 enters the absorber 2-2-3 to absorb the heat of the high-temperature lithium bromide concentrated solution. The temperature of the cooling water in the condenser tube of the absorber 2-2-3 is raised from 20°C to 27°C, and then the cooling water enters the seawater plate heat exchanger 8 through the cooling water return shut-off valve V8, and is cooled to 20°C by the seawater plate heat exchanger 8 for recycling. The cooling water regulating valve V15 installed at the liquid outlet of the cooling water pump 5 is used to adjust the cooling water flow rate.

[0055] When only the refrigeration condition is operated and cooling is provided to the first user 9 and the second user 10 at the same time, the warm water outlet shut-off valve V3 and the warm water return shut-off valve V4 are closed, the shut-off valve V11 is opened, the air-conditioning warm water pump 3 is stopped, the T-type three-way valve V9 is connected to the air-conditioning cold water pump 4, the air-conditioning cold water pump 4 is started, the cold water outlet shut-off valve V5 and the cold water return shut-off valve V6 are opened, the cooling water outlet shut-off valve V7 and the cooling water return shut-off valve V8 of the cooling system are opened, and the cooling water pump 5 is running. At this time, the lithium bromide solution in the high-temperature generator 2-1 is heated to 140°C by the flue gas heat exchange tube 2-1-1 to generate water vapor, and the water vapor enters the condenser 2-2-1 through the refrigerant steam outlet regulating valve V2 and is cooled into water. The cooled water is sprayed on the vacuum evaporator 2-2-2 heat exchange tube through the first spray pipe 13, absorbs the heat of the air-conditioning cold water in the vacuum evaporator 2-2-2 heat exchange tube, and evaporates into water vapor again, so that the air-conditioning cold water in the vacuum evaporator 2-2-2 heat exchange tube is cooled to 7°C.

[0056] The air-conditioning cold water in the heat exchange tube of the vacuum evaporator 2-2-2 is cooled to 7°C and transported out by the air-conditioning cold water pump 4 and divided into two paths. The first path is transported to the second combined air-conditioning box 7 for heat exchange with the air. The temperature of the air-conditioning cold water after the heat exchange increases, and then it flows back to the vacuum evaporator 2-2-2 for recycling. The air after the heat exchange is transported to the second user 10 to complete the cooling, and then it flows back to the second combined air-conditioning box 7 through the second return air duct 20 for recycling; the second path is transported to the first combined air-conditioning box 6 through the water inlet pipe 15 to exchange heat with the air. The temperature of the air-conditioning cold water after the heat exchange increases, and then it flows back to the vacuum evaporator 2-2-2 for recycling through the return water pipe 16 and the cold water return shut-off valve V6 in turn. The air after the heat exchange is transported to the first user 9 to complete the cooling, and then it flows back to the first combined air-conditioning box 6 through the first return air duct 18 for recycling.

[0057] When only the heating condition is running and heating is provided to the first user 9 and the second user 10 at the same time, the T-type three-way valve V9, the warm water outlet shut-off valve V3, and the warm water return shut-off valve V4 are opened, the dilute solution reflux valve V1, the refrigerant steam outlet regulating valve V2, the concentrated solution outlet regulating valve V12, the cooling water outlet shut-off valve V7, the cooling water return shut-off valve V8, the cold water outlet shut-off valve V5, and the cold water return shut-off valve V6 are closed, the air conditioning warm water pump 3 is started, and the air conditioning cold water pump 4, the cooling water pump 5 and the low-temperature generator 2-2 stop working. At this time, the lithium bromide solution in the high-temperature generator 2-1 is heated to 140°C by the flue gas heat exchange tube 2-1-1 to generate water vapor, and the generated water vapor heats the air-conditioning warm water in the air-conditioning warm water heat exchange tube 2-1-2, and the air-conditioning warm water is heated. The air-conditioning warm water pump 3 transports the heated air-conditioning warm water to the first combined air-conditioning box 6 and the second combined air-conditioning box 7 respectively to exchange heat with the air. Specifically, the air-conditioning warm water pump 3 divides the heated air-conditioning warm water into two paths through the T-type three-way valve V9. The first path is transported to the first combined air-conditioning box 6 to exchange heat with the air. After the air-conditioning warm water is heat exchanged, the temperature is reduced, and the low-temperature air-conditioning warm water after heat exchange flows back to the air conditioner through the warm water return shut-off valve V4. The warm water heat exchange tube 2-1-2 is circulated for heating, and the air after heat exchange is transported to the first user 9 through the first air supply pipe 17 to complete heating, and then flows back to the first combined air-conditioning box 6 through the first return air pipe 18 for recycling; the second route is transported to the second combined air-conditioning box 7 through the water inlet pipe 15 to exchange heat with the air. After the air-conditioning warm water is heat-exchanged, the temperature is reduced, and the low-temperature air-conditioning warm water after heat exchange flows back to the air-conditioning warm water heat exchange tube 2-1-2 through the return water pipe 16 and the warm water return shut-off valve V4 for circulated heating. The air after heat exchange is transported to the second user 10 through the second air supply pipe 19 to complete heating, and then flows back to the second combined air-conditioning box 7 through the second return air pipe 20 for recycling.

[0058] The cooling and heating conditions are running simultaneously, the shut-off valve V11 is closed, the T-type three-way valve V9 is connected to the air conditioning warm water pump 3, the turbine flue gas drives the lithium bromide unit 2, the refrigeration system, the heating system and the cooling system to run simultaneously, providing heating for the first user 9 and providing cooling for the second user 10. Specifically, the air-conditioning warm water pump 3 transports the heated air-conditioning warm water to the first combined air-conditioning box 6 for heat exchange with the air. After the heat exchange, the temperature of the air-conditioning warm water decreases. The low-temperature air-conditioning warm water after heat exchange flows back to the air-conditioning warm water heat exchange pipe 2-1-2 through the warm water return shut-off valve V4 for circulating heating. The air after heat exchange is transported to the first user 9 through the first supply air pipe 17 to complete heating, and then flows back to the first combined air-conditioning box 6 through the first return air pipe 18 for recycling. The air-conditioning cold water pump 4 transports the refrigerated air-conditioning cold water to the second combined air-conditioning box 7 for heat exchange with the air. The temperature of the air-conditioning cold water after heat exchange increases, and then flows back to the vacuum evaporator 2-2-2 for recycling. The air after heat exchange is transported to the second user 10 to complete cooling, and then flows back to the second combined air-conditioning box 7 through the second return air pipe 20 for recycling.

[0059] The heat requirements for cooling, heating and cooling and heating conditions are different, and the air volume of the flue gas induced draft fan 11 is adjusted by the flue gas regulating valve V10 according to the requirements.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for simultaneously cooling and heating a lithium bromide unit driven by turbine flue gas, characterized in that: The invention comprises a turbine (1), a turbine flue gas driven lithium bromide unit (2), a heating pipeline, a refrigeration pipeline and a cooling pipeline. The turbine flue gas driven lithium bromide unit (2) comprises a high temperature generator (2-1) and a low temperature generator (2-2). The high temperature generator (2-1) and the low temperature generator (2-2) are connected by a pipeline. The smoke outlet of the turbine (1) is provided with two branches. One branch is connected in sequence to a turbine silencer (12), a flue gas induced draft fan (11) and a flue gas regulating valve (V10). The other branch is connected to a smoke outlet pipe (P3 ), the gas outlet of the smoke regulating valve (V10) is connected to the gas inlet of the high-temperature generator (2-1), and the gas outlet of the high-temperature generator (2-1) is connected to the smoke outlet pipe (P3); the heating zone connection port of the high-temperature generator (2-1) is connected to the heating pipeline; the cooling zone connection port of the low-temperature generator (2-2) is connected to the cooling pipeline, and the cooling zone connection port of the low-temperature generator (2-2) is connected to the cooling pipeline; the end of the heating pipeline is connected to the first user (9), and the end of the cooling pipeline is connected to the second user (10); A water inlet pipeline (15) and a water return pipeline (16) are connected between the heating pipeline and the cooling pipeline; When the turbine (1) is working, it is possible to provide heat only to the first user (9) or to provide cooling only to the second user (10), or to provide cooling to both the first user (9) and the second user (10) at the same time, or to provide heat to the first user (9) and cooling to the second user (10) at the same time, or to provide heating to the first user (9) and cooling to the second user (10) at the same time.

2. A turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 1, characterized in that: A flue gas heat exchange pipe (2-1-1) and an air conditioning warm water heat exchange pipe (2-1-2) are installed in the high temperature generator (2-1). Meanwhile, a lithium bromide solution is placed in the high temperature generator (2-1). The flue gas heat exchange pipe (2-1-1) is immersed in the lithium bromide solution. When the lithium bromide solution is heated by the flue gas heat exchange pipe (2-1-1), water vapor is generated. The air conditioning warm water heat exchange pipe (2-1-2) is located at the upper part of the high temperature generator (2-1) and exchanges heat with the water vapor at the upper part.

3. A turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 2, characterized in that: Three pipelines are connected between the high-temperature generator (2-1) and the low-temperature generator (2-2), the first pipeline is equipped with a dilute solution reflux valve (V1), the second pipeline is equipped with a concentrated solution outlet regulating valve (V12), and the third pipeline is equipped with a refrigerant steam outlet regulating valve (V2).

4. A turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 3, characterized in that: The low-temperature generator (2-2) comprises a condenser (2-2-1), a vacuum evaporator (2-2-2) and an absorber (2-2-3); the liquid inlet of the absorber (2-2-3) is connected to the liquid outlet of a condensing tube arranged in the condenser (2-2-1); the liquid outlet of the absorber (2-2-3) is connected to a cooling water return shut-off valve (V8) of a cooling pipeline; the cooling water outlet shut-off valve (V7) of the cooling pipeline is connected to the liquid inlet of the condensing tube arranged in the condenser (2-2-1); the liquid outlet of the vacuum evaporator (2-2-2) is connected to a cold water outlet shut-off valve (V5) of a refrigeration pipeline; the liquid inlet of the vacuum evaporator (2-2-2) is connected to a cold water return shut-off valve (V6) of the refrigeration pipeline; A first spray pipe (13) and a second spray pipe (14) are also provided in the low-temperature generator (2-2); one end of the first spray pipe (13) is provided above the vacuum evaporator (2-2-2), and the other end is communicated with the interior of the condenser (2-2-1); one end of the second spray pipe (14) is provided above the absorber (2-2-3), and the other end is communicated with a pipeline equipped with a concentrated solution outlet regulating valve (V12).

5. A turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 4, characterized in that: The lithium bromide solution in the high-temperature generator (2-1) is heated by the flue gas heat exchange tube (2-1-1) to generate water vapor, and the water vapor enters the condenser (2-2-1) through the refrigerant steam outlet regulating valve (V2) to be cooled into water, and the cooled water is sprayed on the heat exchange tube of the vacuum evaporator (2-2-2) through the first spray pipe (13) to evaporate into water vapor again, thereby achieving air conditioning cold water cooling in the heat exchange tube of the vacuum evaporator (2-2-2); The lithium bromide concentrated solution in the high-temperature generator (2-1) enters the second spray pipe (14) through the concentrated solution outlet regulating valve (V12) and is sprayed on the heat exchange tube of the absorber (2-2-3), transferring heat to the cooling water in the heat exchange tube of the absorber (2-2-3) and absorbing water vapor to become a lithium bromide dilute solution. The lithium bromide dilute solution flows back to the high-temperature generator (2-1) through the dilute solution reflux valve (V1) and is heated again.

6. The turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 1, characterized in that: The heating pipeline comprises an air conditioning warm water pump (3), a first combined air conditioning box (6), a warm water outlet shut-off valve (V3), a warm water return shut-off valve (V4) and a warm water regulating valve (V13); one end of the warm water outlet shut-off valve (V3) is connected to the liquid outlet of the air conditioning warm water heat exchange pipe (2-1-2), and the other end is connected to the liquid inlet of the air conditioning warm water pump (3); the liquid outlet of the air conditioning warm water pump (3) is connected to one end of the warm water regulating valve (V13), and the other end of the warm water regulating valve (V13) is connected to the first combined air conditioning box ( The first combined air conditioning box (6) is connected to the liquid inlet of the first user (9), and the liquid outlet of the first combined air conditioning box (6) is connected to the liquid inlet of the air conditioning warm water heat exchange pipe (2-1-2) through the warm water return shut-off valve (V4); the air supply port of the first combined air conditioning box (6) is connected to one end of the first air supply pipe (17), the other end of the first air supply pipe (17) is connected to the air inlet of the first user (9), the air outlet of the first user (9) is connected to one end of the first return air pipe (18), and the other end of the first return air pipe (18) is connected to the return air port of the first combined air conditioning box (6).

7. A turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 6, characterized in that: The refrigeration pipeline comprises an air conditioning cold water pump (4), a second combined air conditioning box (7), a cold water outlet shut-off valve (V5), a cold water return shut-off valve (V6) and a cold water regulating valve (V14); one end of the cold water outlet shut-off valve (V5) is connected to the liquid outlet of the vacuum evaporator (2-2-2), and the other end is connected to the liquid inlet of the air conditioning cold water pump (4); the liquid outlet of the air conditioning cold water pump (4) is connected to one end of the cold water regulating valve (V14), and the other end of the cold water regulating valve (V14) is connected to the second combined air conditioning box ( The liquid inlet of the second combined air conditioner (7) is connected, and the liquid outlet of the second combined air conditioner (7) is connected to the liquid inlet of the vacuum evaporator (2-2-2) through a cold water return shut-off valve (V6); the air supply port of the second combined air conditioner (7) is connected to one end of a second air supply pipe (19), the other end of the second air supply pipe (19) is connected to the air inlet of a second user (10), the air outlet of the second user (10) is connected to a second return air pipe (20), and the other end of the second return air pipe (20) is connected to the return air port of the second combined air conditioner (7).

8. A turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 7, characterized in that: One end of the water inlet pipeline (15) is connected to the liquid outlet of the air-conditioning cold water pump (4), and the other end is provided with a T-type three-way valve (V9), the T-type three-way valve (V9) is provided with three interfaces, the first interface of the T-type three-way valve (V9) is connected to the liquid outlet of the warm water regulating valve (V13), the second interface is connected to the water inlet pipeline (15), and the third interface of the T-type three-way valve (V9) is connected to the liquid inlet of the first combined air-conditioning box (6); One end of the return water pipeline (16) is connected to the liquid outlet of the first combined air conditioning box (6), and the other end is connected to the liquid inlet of the cold water return shut-off valve (V6). At the same time, a shut-off valve (V11) is installed on the return water pipeline (16).

9. A turbine flue gas driven lithium bromide unit simultaneous cooling and heating system according to claim 4, characterized in that: The cooling pipeline comprises a cooling water pump (5), a seawater plate heat exchanger (8), a cooling water outlet shut-off valve (V7), a cooling water return shut-off valve (V8), a cooling water regulating valve (V15), a seawater inlet (P1) and a seawater outlet (P2); the cold side liquid inlet of the seawater plate heat exchanger (8) is connected to the seawater inlet (P1), the cold side liquid outlet is connected to the seawater outlet (P2), the hot side outlet of the seawater plate heat exchanger (8) is connected to the liquid inlet of the cooling water pump (5), and the liquid outlet of the cooling water pump (5) is connected to the liquid inlet of the condenser tube in the condenser (2-2-1) through the cooling water regulating valve (V15) and the cooling water outlet shut-off valve (V7) in sequence; the liquid inlet of the cooling water return shut-off valve (V8) is connected to the liquid outlet of the absorber (2-2-3), and the liquid outlet of the cooling water return shut-off valve (V8) is connected to the liquid inlet of the hot side of the seawater plate heat exchanger (8).

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