Waste heat recovery system and method for combined operation of computing power center and thermal power plant

Abstract

The invention relates to a waste heat recovery system and method for combined operation of a computing power center and a thermal power plant, a heat pump unit is arranged between the computing power center of the thermal power plant and a low-pressure heating system, the computing power center is provided with a water cooling circulation device, and the high-temperature water output end of the water cooling circulation device is communicated with the waste heat absorption end of the heat pump unit through a heat preservation pipe; the low-temperature output end of the heat pump unit is communicated with the low-temperature water filling end of the water-cooling circulating device through a cooling water pipe, the recovery pipeline is communicated with the low-temperature heating end of the heat pump unit through a branch recovery pipeline, and the high-temperature output end of the heat pump unit is communicated with the liquid inlet end of the low-pressure heater system through a waste heat utilization pipeline; the water-cooling circulating device arranged in the computing power center is used for recycling heat during operation of each computing unit, and a closed circulating system is formed, so that waste heat output can be efficiently recycled while the computing power center is cooled.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat recovery and reuse, and in particular to a waste heat recovery system and method for the joint operation of a computing center and a thermal power plant. Background Art

[0002] With the rapid progress of artificial intelligence technology, society's requirements for computing power are getting higher and higher. More and more thermal power plants have also built computing centers, which can reduce energy waste and improve the overall operational efficiency of thermal power plants by optimizing energy management and scheduling. Through real-time monitoring and regulation, the power generation and energy consumption of thermal power plants can be better managed to reduce unnecessary energy losses. It can not only improve the automation level of thermal power plants, but also optimize production processes and improve production efficiency. In the context of energy digitalization, computing centers can help monitor fluctuations in power supply, accurately predict the power generation of clean energy, regulate energy storage coordination, reduce emissions from standby generators, and promote the creation of a zero-carbon power system. By establishing a computing center, thermal power plants can better respond to changes in market demand and provide more flexible and efficient energy supply services. In summary, the establishment of a computing center in a thermal power plant can not only improve operational efficiency and reduce costs, but also promote digital transformation, support new energy access and management, and thus enhance the overall competitiveness and market position of thermal power plants.

[0003] However, with the increase in computing power, a large amount of electricity is consumed and a large amount of waste heat is discharged. For this reason, the computing power center has to spend a lot of money on heat dissipation. Traditional computing power center heat dissipation systems mostly use air cooling or air cooling combined with water cooling to achieve cooling operations. The heat discharged by the water cooling circulation system needs to be recycled after the hot water is cooled by an external cooling unit. The waste heat discharged by the computing power center cannot be reused after the external cooling unit cools it down, resulting in a waste of this part of the heat energy. The condensate pump of the thermal power plant extracts the condensate from the condenser and sends it to the boiler for reheating, so that the heat energy can be fully utilized and the efficiency of the power station is improved. In the process of pumping back the condensate, while outputting electricity to the computing power center, if the waste heat of the computing power center is efficiently utilized, it can not only stabilize the power load of the thermal power plant, but also recover heat and realize waste heat utilization, which can reduce the heat dissipation cost of the computing power center.

[0004] Therefore, the present invention provides a waste heat recovery system and method for the joint operation of a computing center and a thermal power plant. The system has a simple structural design and high waste heat utilization efficiency, saves energy, improves thermal energy utilization efficiency, reduces heat dissipation costs, and has good social and economic benefits. Summary of the invention

[0005] In view of the defects of the prior art, the present invention provides a waste heat recovery system and method for the joint operation of a computing center and a thermal power plant, which has a simple structural design, high waste heat utilization efficiency, energy saving, high thermal energy utilization efficiency, low heat dissipation cost, and a simple and easy-to-operate method, so as to overcome the defects in the prior art.

[0006] The technical solution of the present invention is implemented as follows: a waste heat recovery system for the joint operation of a computing power center and a thermal power plant, comprising a computing power center of the thermal power plant, a condensate pump connected to the recovery end of the condenser of the thermal power plant, the condensate pump being connected to the liquid inlet end of the low-pressure heating system through a recovery pipeline, a heat pump unit being arranged between the computing power center of the thermal power plant and the low-pressure heating system, the computing power center being provided with a water-cooling circulation device, the high-temperature water output end of the water-cooling circulation device being connected to the waste heat absorption end of the heat pump unit through an insulation pipe, the low-temperature output end of the heat pump unit being connected to the low-temperature water filling end of the water-cooling circulation device through a cooling water pipe, the recovery pipeline being connected to the low-temperature heating end of the heat pump unit through a branch recovery pipeline, and the high-temperature output end of the heat pump unit being connected to the liquid inlet end of the low-pressure heating system through a waste heat utilization pipeline.

[0007] Furthermore, the water cooling circulation device includes a cooling water branch pipe and a high-temperature water output branch pipe respectively connected to the cooling water pipe and the insulation pipe. A computing power equipment shell is installed in the computing power center of the thermal power plant. A liquid inlet main valve connected to the cooling water branch pipe is fixedly installed on the top of the computing power equipment shell. The liquid inlet main valve is connected to the top of the cooling water jacket assembly installed on the inner wall of the computing power equipment shell through a liquid distribution pipe. A peripheral cooling pipe connected to the cooling water jacket assembly is arranged on the inner wall of the computing power equipment shell. A number of internal horizontal horizontal cooling spiral pipes and internal horizontal vertical cooling spiral pipes are horizontally staggered in the middle of the cooling water jacket assembly. The bottom of the cooling water jacket assembly is connected to the liquid return main valve through a liquid return pipe, and the liquid return main valve is connected to the insulation pipe through a high-temperature water output branch pipe.

[0008] Furthermore, a VA1 valve is installed on the recovery pipeline, a VA3 valve is installed on the branch recovery pipeline, a VA2 valve is installed on the waste heat utilization pipeline, a VB1 valve is provided on the insulation pipe, and a VB2 valve is provided on the cooling water pipe.

[0009] Furthermore, the insulation pipe is connected to the standby heat exchanger through a pipe equipped with a VC1 valve, the standby heat exchanger is connected to the cooling water pipe through a pipe equipped with a VC2 valve, and the condensate pump is connected to the recovery pipe through the shaft.

[0010] Furthermore, an opening and closing door is provided on the front side of the computing power equipment housing, the top of the liquid inlet main valve is fixedly connected to the top wall of the computing power equipment housing, and the bottom of the liquid return main valve is fixedly connected to the bottom wall of the computing power equipment housing.

[0011] Furthermore, the cooling water jacket assembly is composed of a front cooling water jacket, a rear cooling water jacket, a left cooling water jacket and a right cooling water jacket longitudinally installed in the inner cavity of the computing power equipment shell. The tops of the front cooling water jacket, the rear cooling water jacket, the left cooling water jacket and the right cooling water jacket are all connected to the liquid inlet main valve through a liquid separation pipe, and the bottoms of the front cooling water jacket, the rear cooling water jacket, the left cooling water jacket and the right cooling water jacket are all connected to the liquid return main valve through a liquid return pipe.

[0012] Furthermore, the middle parts of the front cooling water jacket, the rear cooling water jacket, the left cooling water jacket and the right cooling water jacket are connected through a peripheral cooling pipe.

[0013] Furthermore, a horizontal transverse protective shell is arranged between the left cooling water jacket and the right cooling water jacket, the internal horizontal transverse cooling spiral tube is installed in the horizontal transverse protective shell, and a plurality of first heat dissipation holes are opened on the horizontal transverse protective shell; a horizontal vertical protective shell is arranged between the front cooling water jacket and the rear cooling water jacket, the internal horizontal vertical cooling spiral tube is installed in the horizontal vertical protective shell, and a plurality of second heat dissipation holes are opened on the horizontal vertical protective shell.

[0014] A method for recovering waste heat by using the waste heat recovery system jointly operated by the computing power center and the thermal power plant, the method comprising:

[0015] The heat generated by the computing center of the thermal power plant during operation is absorbed by the cooling medium in the front cooling water jacket, the rear cooling water jacket, the left cooling water jacket, the right cooling water jacket, the peripheral cooling pipe, the internal horizontal transverse cooling spiral pipe and the internal horizontal vertical cooling spiral pipe, and then output to the insulation pipe through the return liquid pipe and the return liquid main valve through the high-temperature water output branch pipe;

[0016] Start the heat pump unit, open the VA2 valve and the VA3 valve, close the VA1 valve, open the VB1 valve and the VB2 valve at the same time, and close the VC1 valve and the VC2 valve. The condensate pump transports the condensate recovered from the recovery end of the condenser of the thermal power plant to the low-temperature heating end of the heat pump unit through the branch recovery pipeline, and the high-temperature water in the insulation pipe is transported to the waste heat absorption end of the heat pump unit. After the heat pump unit absorbs heat, its high-temperature output end transports the condensate after absorbing waste heat to the liquid inlet end of the low-pressure heating system through the waste heat utilization pipeline. The low-temperature output end of the heat pump unit transports the cooled medium through the cooling water pipe, the cooling water branch pipeline, the liquid inlet main valve and the liquid distribution pipeline to the front cooling water jacket, the rear cooling water jacket, the left cooling water jacket, the right cooling water jacket, the outer cooling pipe, the internal horizontal horizontal cooling spiral pipe and the internal horizontal vertical cooling spiral pipe to implement circulation cooling operations.

[0017] The present invention has the following positive effects:

[0018] 1. The waste heat recovery system of the computing power center and the thermal power plant jointly operated by the present invention transports the waste heat discharged by the computing power center to the thermal power plant through a heat pump for heating condensed water or heat supply. For the power plant, it stabilizes the basic electrical load. While outputting electricity to the computing power center, it can recover the waste heat in the computing power. For the computing power center, it not only stabilizes the power supply but also reduces the heat dissipation cost. The water cooling circulation device arranged in the computing power center recovers the heat of each computing unit during operation and forms a closed circulation system, so that the computing power center can efficiently recover the waste heat output while cooling down.

[0019] 2. The present invention utilizes a heat pump unit disposed between the computing power center and the thermal power plant to implement heat exchange. The heat pump unit acts as a heat exchange station. The liquid cooling medium of all computing units in the computing power center absorbs heat and converges to the heat pump unit. The heat pump unit acts as a heat relay point, absorbs heat from the computing power center, and transmits it to the thermal system of the thermal power plant. The thermal energy is efficiently recycled and utilized. After absorbing this part of the heat energy, the thermal power plant can effectively save energy and reduce emissions, protect power equipment and improve power quality, thereby improving the thermal efficiency of the power plant, saving fuel, and at the same time facilitating more efficient operation of the unit.

[0020] 3. The present invention adopts the shell of the computing power equipment to implement cooling and heat absorption operations in the computing power center. The heat generated by the computing components installed in the shell of the computing power equipment is recovered by arranging the cooling water jacket arranged in the longitudinal direction of the shell of the computing power equipment and the internal horizontal transverse cooling spiral tube, the internal horizontal vertical cooling spiral tube and the peripheral cooling tube. While cooling the components, the heat is output to the heat pump unit through the insulation tube. The heat absorbing components arranged in a criss-cross pattern at different heights are used to realize efficient heat recovery. The unique structural design and wide heat absorption radiation range are conducive to the efficient operation of cooling and heat absorption operations.

[0021] 4. The waste heat recovery method of the joint operation of the computing center and the thermal power plant of the present invention utilizes the control of different valves to realize the mutual coordination of the low-temperature heating end, waste heat absorption end, high-temperature output end and low-temperature output end of the heat pump unit, thereby realizing the absorption of heat energy in the insulation pipe. The control method is simple and easy to operate, the heat energy recovery efficiency is high, and it has good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the system structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the internal structure of the water cooling circulation device of the present invention from a front view.

[0024] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of the middle AA section.

[0025] Figure 4 For the present invention Figure 2 Schematic diagram of the structure of the middle BB section.

[0026] Figure 5 For the present invention Figure 2 Schematic diagram of the CC section structure.

[0027] Figure 6 For the present invention Figure 2 Schematic diagram of the structure of the middle DD section.

[0028] Figure 7 For the present invention Figure 2 Schematic diagram of the EE section structure. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the following description of the invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. The term "connection" only indicates the connection between devices and has no special meaning.

[0031] like Figure 1 , 2As shown in Figures 3, 4, 5, 6 and 7, a waste heat recovery system for a computing power center and a thermal power plant jointly operated comprises a computing power center of the thermal power plant, a condensate pump 23 connected to the recovery end of a condenser 22 of the thermal power plant, the condensate pump 23 being connected to the liquid inlet end of a low-temperature heating system 27 through a recovery pipe 25, a heat pump unit 29 being arranged between the computing power center of the thermal power plant and the low-temperature heating system 27, the computing power center being provided with a water cooling circulation device, the high-temperature water output end of the water cooling circulation device being connected to the waste heat absorption end of the heat pump unit 29 through an insulation pipe 16, the low-temperature output end of the heat pump unit 29 being connected to the low-temperature water filling end of the water cooling circulation device through a cooling water pipe 2, the recovery pipe 25 being connected to the low-temperature heating end of the heat pump unit 29 through a branch recovery pipe 26, the high-temperature output end of the heat pump unit 29 being connected to the liquid inlet end of the low-temperature heating system 27 through a waste heat utilization pipe 30. The water cooling circulation device comprises a cooling water branch pipe 3 and a high-temperature water output branch pipe 15 respectively connected to the cooling water pipe 2 and the insulation pipe 16. A computing power equipment housing 1 is installed in the computing power center of the thermal power plant. A liquid inlet main valve 4 connected to the cooling water branch pipe 3 is fixedly installed on the top of the computing power equipment housing 1. The liquid inlet main valve 4 is connected to the top of the cooling water jacket assembly installed on the inner wall of the computing power equipment housing 1 through a liquid separation pipe 5. A peripheral cooling pipe 17 connected to the cooling water jacket assembly is arranged on the inner wall of the computing power equipment housing 1. A plurality of internal horizontal horizontal cooling spiral pipes 12 and internal horizontal vertical cooling spiral pipes 10 are horizontally staggered in the middle of the cooling water jacket assembly. The bottom of the cooling water jacket assembly is connected to the liquid return main valve 13 through a liquid return pipe 14, and the liquid return main valve 13 is connected to the insulation pipe 16 through a high-temperature water output branch pipe 15.

[0032] Specifically, the waste heat absorption end of the heat pump unit 29 arranged between the computing power center and the low-temperature heating system 27 of the thermal power plant comes from the high-temperature end of the cooling medium of the computing power center, and its low-temperature output end is connected to the low-temperature end of the cooling medium of the computing power center. The present invention adopts the method that the upper part of the computing power equipment housing 1 is the low-temperature end of the cooling medium, and the lower part of the computing power equipment housing 1 is the high-temperature end of the cooling medium. The low-temperature medium is introduced from the upper part and the high-temperature medium is output from the lower part. The method cooperates with the principle of hot air rising to implement cooling and recovery of the heat energy generated by the computing components inside the computing power equipment housing 1 during operation. The high-temperature end of the heat pump unit 29 is connected to the low-temperature heating inlet of the power plant, and the low-temperature heating end, that is, the heated medium, comes from the outlet of the condensate pump. The computing power equipment housing 1 is used as a carrier in the process of heat recovery. Through the longitudinally arranged cooling water jacket assembly and the peripheral cooling pipe 17 matched with the cooling water jacket assembly, the internal horizontal transverse cooling spiral pipe 12 and the internal horizontal vertical cooling spiral pipe 10 work together to recover heat from the internal cavity of the computing power equipment housing 1 from top to bottom and from the center to the outside. While cooling the components and parts, the heat is efficiently recovered and output through the insulation pipe 16. The insulation pipe 16 is connected to the waste heat absorption end of the heat pump unit 29, and the cooling water pipe 2 is connected to the low-temperature output end of the heat pump unit 29. After the heat pump unit 29 implements waste heat recovery, the working fluid input by the branch recovery pipe 26 is heated and transported to the liquid inlet end of the low-temperature heating system 27 through the waste heat utilization pipe 30. Thermal energy is efficiently recycled and utilized. After absorbing this thermal energy, the thermal power plant can effectively save energy and reduce emissions, protect power equipment and improve power quality, thereby increasing the thermal efficiency of the power plant, saving fuel, and facilitating more efficient operation of the units.

[0033] The recovery pipe 25 is provided with a VA1 valve, the branch recovery pipe 26 is provided with a VA3 valve, the waste heat utilization pipe 30 is provided with a VA2 valve, the insulation pipe 16 is provided with a VB1 valve, and the cooling water pipe 2 is provided with a VB2 valve. The insulation pipe 16 is connected to the standby heat exchanger 28 through a pipe provided with a VC1 valve, the standby heat exchanger 28 is connected to the cooling water pipe 2 through a pipe provided with a VC2 valve, and the condensate pump 23 is connected to the recovery pipe 25 through the shaft 24.

[0034] Specifically, the seven valves provided in the present invention perform corresponding opening and closing operations during operation. When the present system is not started, the VB1 valve, VB2 valve, VA3 valve and VA2 valve are in a closed state, and the VC1 valve, VC2 valve and VA1 valve are in an open state. The condensate is directly transported from the VA1 valve to the low-pressure heating system 27, and the standby heat exchanger performs the cooling operation of the cooling medium of the computing power center. When the present system is running, the VB1 valve, VB2 valve, VA3 valve and VA2 valve are in an open state, and the VC1 valve, VC2 valve and VA1 valve are in a closed state. The efficient association between the present invention and the existing supporting equipment is achieved through the control of the valves, and the effect of waste heat utilization of the present invention can be achieved without changing the circulation state of the traditional equipment.

[0035] An opening and closing door 18 is provided on the front side of the computing power equipment housing 1, the top of the main liquid inlet valve 4 is fixedly connected to the top wall of the computing power equipment housing 1, and the bottom of the main liquid return valve 13 is fixedly connected to the bottom wall of the computing power equipment housing 1. The cooling water jacket assembly is composed of a front cooling water jacket 19, a rear cooling water jacket 6, a left cooling water jacket 7 and a right cooling water jacket 8 longitudinally installed in the inner cavity of the computing power equipment housing 1, and the tops of the front cooling water jacket 19, the rear cooling water jacket 6, the left cooling water jacket 7 and the right cooling water jacket 8 are all connected to the main liquid inlet valve 4 through the liquid separation pipeline 5, and the bottoms of the front cooling water jacket 19, the rear cooling water jacket 6, the left cooling water jacket 7 and the right cooling water jacket 8 are all connected to the main liquid return valve 13 through the liquid return pipeline 14.

[0036] Specifically, the liquid return main valve 13 and the liquid inlet main valve 4 are normally open valves, and five passages are provided. The top of the liquid inlet main valve 4 is the liquid inlet end, and four liquid outlet ends are provided in four directions on the side, all of which are connected to the liquid separation pipe 5, and the outer ends of the four liquid separation pipes 5 are respectively connected to the tops of the four cooling water jackets. The bottom of the liquid return main valve 13 is the liquid outlet end, and four liquid inlet ends are provided in four directions on the side, all of which are connected to the liquid return pipe 14, and the outer ends of the four liquid return pipes 14 are respectively connected to the bottoms of the four cooling water jackets.

[0037] The middle parts of the front cooling water jacket 19, the rear cooling water jacket 6, the left cooling water jacket 7 and the right cooling water jacket 8 are connected through the peripheral cooling pipe 17. A horizontal transverse protective shell 11 is arranged between the left cooling water jacket 7 and the right cooling water jacket 8, and the internal horizontal transverse cooling spiral pipe 12 is installed in the horizontal transverse protective shell 11, and a plurality of first heat dissipation holes 21 are opened on the horizontal transverse protective shell 11. A horizontal vertical protective shell 9 is arranged between the front cooling water jacket 19 and the rear cooling water jacket 6, and the internal horizontal vertical cooling spiral pipe 10 is installed in the horizontal vertical protective shell 9, and a plurality of second heat dissipation holes 20 are opened on the horizontal vertical protective shell 9.

[0038] Specifically, the horizontal transverse protective shell 11 and the horizontal vertical protective shell 9 protect the outer sides of the internal horizontal transverse cooling spiral tube 12 and the internal horizontal vertical cooling spiral tube 10 to avoid direct contact between components installed in the computing power equipment housing 1 and the cooling spiral tubes, while providing support for the installation of components. Heat is evenly dissipated through the first heat dissipation hole 21 and the second heat dissipation hole 20, which helps to efficiently recover heat energy.

[0039] like Figure 1-7 As shown, when the present invention is in operation, under normal working conditions, the condensate pump 23 transports the condensate at the recovery end of the condenser 22 of the thermal power plant. The temperature of the condensate at the outlet of the condensate pump 23 is 30-40 degrees Celsius. After the heat pump unit 29 heats the condensate, its maximum temperature is about 80 degrees Celsius. The lower the temperature rise, the higher the energy efficiency ratio of the heat pump unit. According to the actual operating conditions, the heat pump unit is operated under the highest energy efficiency ratio condition. The cold end output temperature of the heat pump unit 29 is about 15 degrees Celsius according to different working conditions, and the range adjustment operation is performed as needed to meet the cooling needs of the computing power center of the thermal power plant.

[0040] The normal operating temperature of electronic equipment is 0-40 degrees Celsius, and the common temperature is 25 degrees Celsius. The corresponding high-temperature output temperature is above 23 degrees Celsius, which can meet the heat pump unit's demand for waste liquid heat temperature. Under the premise of ensuring the safe operation of the thermal power plant computing center and power plant equipment, adjust the temperature of the condensate and the outlet temperature of the cooling medium of the thermal power plant computing center to make the heat pump unit at the highest working efficiency point.

[0041] When implementing the waste heat recovery operation, the heat generated by the computing center of the thermal power plant during operation is absorbed by the cooling medium in the front cooling water jacket 19, the rear cooling water jacket 6, the left cooling water jacket 7, the right cooling water jacket 8, the outer cooling pipe 17, the internal horizontal transverse cooling spiral pipe 12 and the internal horizontal vertical cooling spiral pipe 10, and then output to the insulation pipe 16 through the return liquid pipeline 14 and the return liquid main valve 13 through the high-temperature water output branch pipeline 15; start the heat pump unit 29, and open the VA2 valve and the VA3 valve, close the VA1 valve, and at the same time open the VB1 valve and the VB2 valve, and close the VC1 valve and the VC2 valve, the condensate pump 23 recovers the condensate at the recovery end of the condenser 22 of the thermal power plant The water is transported to the low-temperature heating end of the heat pump unit 29 through the branch recovery pipe 26, and the high-temperature water in the insulation pipe 16 is transported to the waste heat absorption end of the heat pump unit 29. After the heat pump unit 29 absorbs heat, its high-temperature output end transports the condensed water after absorbing the waste heat to the liquid inlet end of the low-temperature heating system 27 through the waste heat utilization pipe 30. The low-temperature output end of the heat pump unit 29 transports the cooled medium through the cooling water pipe 2, the cooling water branch pipe 3, the liquid inlet main valve 4 and the liquid distribution pipe 5 to the front cooling water jacket 19, the rear cooling water jacket 6, the left cooling water jacket 7, the right cooling water jacket 8, the outer cooling pipe 17, the internal horizontal horizontal cooling spiral pipe 12 and the internal horizontal vertical cooling spiral pipe 10 to implement a circulation cooling operation.

[0042] The computing center of the thermal power plant and the thermal power plant use heat pump units for heat transfer, which realizes the recovery of low-temperature heat from the computing center and heats the low-temperature working fluid of the thermal power plant. The thermal energy is efficiently recycled and utilized. After absorbing this part of the heat energy, the thermal power plant can effectively save energy and reduce emissions, protect power equipment and improve power quality, improve the thermal efficiency of the power plant, save fuel, and at the same time facilitate more efficient operation of the unit.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery system for a computing power center and a thermal power plant in joint operation, comprising a computing power center of the thermal power plant, a condensate pump (23) connected to a recovery end of a condenser (22) of the thermal power plant, the condensate pump (23) being connected to a liquid inlet end of a low-pressure heating system (27) through a recovery pipeline (25), characterized in that: A heat pump unit (29) is arranged between the computing power center and the low-temperature heating system (27) of the thermal power plant, and the computing power center is provided with a water cooling circulation device. The high-temperature water output end of the water cooling circulation device is connected to the waste heat absorption end of the heat pump unit (29) through an insulation pipe (16), the low-temperature output end of the heat pump unit (29) is connected to the low-temperature water filling end of the water cooling circulation device through a cooling water pipe (2), the recovery pipe (25) is connected to the low-temperature heating end of the heat pump unit (29) through a branch recovery pipe (26), and the high-temperature output end of the heat pump unit (29) is connected to the liquid inlet end of the low-temperature heating system (27) through a waste heat utilization pipe (30).

2. The waste heat recovery system for the joint operation of a computing center and a thermal power plant according to claim 1 is characterized in that: The water cooling circulation device comprises a cooling water branch pipe (3) and a high-temperature water output branch pipe (15) respectively connected to the cooling water pipe (2) and the insulation pipe (16). A computing power equipment housing (1) is installed in the computing power center of the thermal power plant. A liquid inlet main valve (4) connected to the cooling water branch pipe (3) is fixedly installed on the top of the computing power equipment housing (1). The liquid inlet main valve (4) is connected to the cooling water jacket component installed on the inner wall of the computing power equipment housing (1) through a liquid distribution pipe (5). The top of the computing device is connected, and an outer cooling pipe (17) connected to the cooling water jacket assembly is arranged on the inner wall of the computing device housing (1). A plurality of internal horizontal transverse cooling spiral pipes (12) and internal horizontal vertical cooling spiral pipes (10) are horizontally and staggeredly distributed in the middle of the cooling water jacket assembly. The bottom of the cooling water jacket assembly is connected to the liquid return main valve (13) through a liquid return pipe (14), and the liquid return main valve (13) is connected to the insulation pipe (16) through a high-temperature water output branch pipe (15).

3. The waste heat recovery system for the joint operation of a computing center and a thermal power plant according to claim 1 is characterized by: The recovery pipe (25) is provided with a VA1 valve, the branch recovery pipe (26) is provided with a VA3 valve, the waste heat utilization pipe (30) is provided with a VA2 valve, the insulation pipe (16) is provided with a VB1 valve, and the cooling water pipe (2) is provided with a VB2 valve.

4. The waste heat recovery system for the joint operation of a computing center and a thermal power plant according to claim 1 is characterized in that: The insulation pipe (16) is connected to the standby heat exchanger (28) through a pipe equipped with a VC1 valve, the standby heat exchanger (28) is connected to the cooling water pipe (2) through a pipe equipped with a VC2 valve, and the condensate pump (23) is connected to the recovery pipe (25) through the shaft (24).

5. The waste heat recovery system for the joint operation of a computing center and a thermal power plant according to claim 2 is characterized by: An opening and closing door (18) is provided on the front side of the computing device housing (1); the top of the liquid inlet main valve (4) is fixedly connected to the top wall of the computing device housing (1); and the bottom of the liquid return main valve (13) is fixedly connected to the bottom wall of the computing device housing (1).

6. The waste heat recovery system for the joint operation of a computing center and a thermal power plant according to claim 2 is characterized by: The cooling water jacket assembly is composed of a front cooling water jacket (19), a rear cooling water jacket (6), a left cooling water jacket (7) and a right cooling water jacket (8) which are longitudinally installed in the inner cavity of the computing power equipment housing (1); the tops of the front cooling water jacket (19), the rear cooling water jacket (6), the left cooling water jacket (7) and the right cooling water jacket (8) are all connected to the liquid inlet main valve (4) through a liquid separation pipeline (5); and the bottoms of the front cooling water jacket (19), the rear cooling water jacket (6), the left cooling water jacket (7) and the right cooling water jacket (8) are all connected to the liquid return main valve (13) through a liquid return pipeline (14).

7. The waste heat recovery system for the joint operation of a computing center and a thermal power plant according to claim 6 is characterized by: The middle parts of the front cooling water jacket (19), the rear cooling water jacket (6), the left cooling water jacket (7) and the right cooling water jacket (8) are connected via a peripheral cooling pipe (17).

8. The waste heat recovery system for the joint operation of a computing center and a thermal power plant according to claim 6 is characterized by: A horizontal transverse protective shell (11) is arranged between the left cooling water jacket (7) and the right cooling water jacket (8), an internal horizontal transverse cooling spiral tube (12) is installed in the horizontal transverse protective shell (11), and a plurality of first heat dissipation holes (21) are opened on the horizontal transverse protective shell (11); a horizontal vertical protective shell (9) is arranged between the front cooling water jacket (19) and the rear cooling water jacket (6), an internal horizontal vertical cooling spiral tube (10) is installed in the horizontal vertical protective shell (9), and a plurality of second heat dissipation holes (20) are opened on the horizontal vertical protective shell (9).

9. A method for recovering waste heat by using the waste heat recovery system of a computing power center and a thermal power plant jointly operated according to any one of claims 1 to 8, characterized in that: The method is: The heat generated by the computing center of the thermal power plant during operation is absorbed by the cooling medium in the front cooling water jacket (19), the rear cooling water jacket (6), the left cooling water jacket (7), the right cooling water jacket (8), the peripheral cooling pipe (17), the internal horizontal transverse cooling spiral pipe (12) and the internal horizontal vertical cooling spiral pipe (10), and then output to the insulation pipe (16) through the return liquid pipe (14) and the return liquid main valve (13) via the high-temperature water output branch pipe (15); The heat pump unit (29) is turned on, and the VA2 valve and the VA3 valve are opened, the VA1 valve is closed, the VB1 valve and the VB2 valve are opened at the same time, and the VC1 valve and the VC2 valve are closed. The condensate pump (23) transports the condensate recovered from the recovery end of the thermal power plant condenser (22) to the low-temperature heating end of the heat pump unit (29) through the branch recovery pipeline (26), and the high-temperature water in the insulation pipe (16) is transported to the waste heat absorption end of the heat pump unit (29). After the heat pump unit (29) absorbs heat, its high-temperature output end is transported through the waste heat utilization pipeline ( 30) transports the condensed water after absorbing the waste heat to the liquid inlet end of the low-temperature heating system (27), and the low-temperature output end of the heat pump unit (29) transports the cooled medium through the cooling water pipe (2), the cooling water branch pipe (3), the liquid inlet main valve (4) and the liquid distribution pipe (5) to the front cooling water jacket (19), the rear cooling water jacket (6), the left cooling water jacket (7), the right cooling water jacket (8), the outer cooling pipe (17), the internal horizontal transverse cooling spiral pipe (12) and the internal horizontal vertical cooling spiral pipe (10) to implement a cyclic cooling operation.

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