CN110887138A - A high-efficiency energy station based on energy tower and its control method - Google Patents

Abstract

The invention is a high-efficiency energy station based on an energy tower and a control method thereof, wherein the high-efficiency energy station comprises an energy tower group, a solution concentration control unit, a heat pump unit unit and a user end; the user end is provided with a water separator and a water collector The solution concentration control unit is provided with a solution tank and a plate heat exchanger, the energy tower group includes a number of parallel energy towers and a solution concentration detection device, and the heat pump unit unit includes a number of parallel The set heat pump unit; through the pipeline valve control system, various working modes such as conventional cooling mode, host high-efficiency cooling mode, conventional heating mode, host high-efficiency heating mode, solution tank heat storage mode, and solution regeneration mode can be realized. The energy station and the control method thereof can effectively improve the working performance and energy utilization efficiency of the air conditioning unit.

Description

A high-efficiency energy station based on energy tower and its control method

technical field

The invention belongs to the technical field of air-conditioning system integration, in particular to a high-efficiency energy station based on an energy tower and a control method thereof.

Background technique

With the rapid growth of China's economy, the importance of building energy efficiency has gradually emerged. At present, building energy consumption accounts for about 27.5% of the final energy consumption of the whole society in my country. And with the development of urbanization, the energy consumption of buildings will increase rapidly, and the development of urbanization has caused great pressure on the energy supply of buildings in my country. In the current urban building energy consumption, the energy consumption of air conditioning accounts for the most important aspect, especially for the unique climate characteristics of hot summer and cold air and humid air in the middle and lower reaches of the Yangtze River, the energy consumption of refrigeration and air conditioning accounts for 50% of the total energy consumption of buildings. ~70%. Through investigation and research, it is found that more than 70% of the existing buildings are high-energy-consumption buildings, all of which have certain energy-saving renovation potential.

In the current building refrigeration and air conditioning system, the widely used cooling/heating methods are chiller + boiler (coal, gas or oil) and heat pump (air source heat pump, ground source heat pump and water source heat pump). Each thermal method has its own advantages and disadvantages and scope of application.

Air source heat pump utilizes low-grade energy in the atmosphere, and has the advantages of energy saving and cooling and heating, flexible use, convenience, small footprint, high utilization efficiency, and no pollution. It is an important energy-saving heating and air-conditioning equipment in the Yangtze River. It has been widely used in downstream regions, southwest regions, southern China and central and southern regions. At present, the research on air source heat pump mainly focuses on solving its frosting problem and improving its application scope. Since the surface of the evaporator is prone to frost when the air source heat pump operates in winter, the formation and growth of the frost layer on the surface of the evaporator increases the thermal resistance of the heat transfer process, increases the resistance of the air flowing through the heat exchanger, and deteriorates the heat transfer effect. Causes the fan power consumption to increase.

Ground source heat pumps use soil as a source of cold and heat, and have many advantages such as high efficiency, energy saving, environmental protection, space saving, and comfort, so they have been widely used in large buildings. However, its inherent shortcomings also limit its comprehensive promotion. The first problem is the problem of energy balance, that is, whether the heat supplied to the ground and the heat obtained from the ground can be guaranteed to be equal. Secondly, the attenuation of heat transfer capacity of buried pipes also restricts its wide application. Since the ground source heat pump needs to exchange heat from the ground, its impact on the soil quality and its underground ecology is also a problem that needs to be solved.

Water source heat pump is a kind of low-level thermal energy resources using the earth's surface or shallow water sources (such as surface water, rivers, lakes) or artificially regenerated water sources (industrial wastewater, geothermal water, etc.) The purpose of heating and cooling. Water source heat pumps have been applied in some areas, but water source heat pumps are only suitable for areas with suitable water sources, which greatly affects the scope of their use. At the same time, the water source heat pump has a big difference in the heat extraction/removal capacity between winter and summer, especially in winter, the shallow water temperature is low, generally only about 5°C higher than the freezing point temperature, and its operation efficiency as a heat pump in winter is low. In addition, the water quality problem of shallow water source also has a great resistance to the popularization and application of water source heat pump. Therefore, its application area is very limited. The cooling/heating method of water-cooled chillers and boilers is widely used in large central air-conditioning systems. In summer, the chiller is equipped with a cooling tower, a water circulation cooling device, to dissipate the heat in the condenser, so that it operates in a high-efficiency state, with mature and reliable technology, high efficiency, no ecological pollution and initial investment. Less advantages. The chiller achieves the effect of reducing the condensing temperature by evaporative cooling through the cooling tower. The condenser condensing temperature can theoretically reach the outdoor air wet bulb temperature. Compared with the air source heat pump, the condensing temperature is greatly reduced, thereby improving the unit. cooling efficiency. However, cooling towers are limited to operating in summer, and chillers are idle in winter. In winter, boilers and other equipment are used for heating. The utilization rate of primary energy is low and the emissions pollute the environment. At present, the operation of coal-fired boilers in cities is basically prohibited.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a high-efficiency energy station based on an energy tower and a control method thereof. The system operates in the cooling mode of a water-cooled chiller in summer, and operates in the heating mode of a heat pump in winter, and cools the system. The tower is transformed into a heat-absorbing equipment-energy tower, which absorbs the heat in the air by spraying the solution on the surface of the water-spraying packing in the tower, while the condenser in the heat pump provides heat to achieve system heating. The adoption of this system does not affect the high-efficiency cooling performance of the chiller in summer, and can also replace boiler heating in winter, improving energy utilization and equipment utilization.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A high-efficiency energy station based on an energy tower is characterized in that: it comprises an energy tower group, a solution concentration control unit, a heat pump unit unit and a user terminal;

The user terminal is provided with a water separator and a water collector, the solution concentration control unit is provided with a solution tank and a plate heat exchanger, and the energy tower group includes several parallel energy towers and solutions. a concentration detection device, wherein the heat pump unit unit includes several heat pump units arranged in parallel;

The water collector is connected with one end of the water outlet pipe, and the other end of the water outlet pipe is connected with the first outlet branch pipe and the second water outlet pipe respectively. A user water pump is installed on the pipeline of the water outlet pipe, and the first water outlet pipe is connected to One end of the water inlet pipe of the heat exchanger is connected, the water inlet pipe of the heat exchanger and the water outlet pipe of the heat exchanger are connected in the plate heat exchanger, and the liquid in the water inlet pipe of the heat exchanger and the water outlet pipe of the heat exchanger is used for passing through the plate heat exchanger. The heat exchanger conducts heat exchange with the solution in the solution tank, the outlet pipe of the heat exchanger is connected with one end of the inlet pipe, the other end of the inlet pipe is communicated with the water separator, and the first outlet pipe is provided with a solution regeneration electric valve ;

The second water outlet pipe is communicated with one end of the first control pipe and one end of the second control pipe respectively, and the other end of the first control pipe and the other end of the second control pipe are both communicated with the energy tower outlet pipe, and the energy tower outlet pipe A tower water pump is installed on the pipeline of the energy tower, the water outlet pipe of the energy tower is connected with the liquid outlet end of the energy tower group, and the water outlet pipe of the energy tower is also connected with the solution concentration detection device;

One end of the water inlet pipe that communicates with the water outlet pipe of the heat exchanger is also communicated with one end of the third control pipe and one end of the fourth control pipe, respectively, and the other end of the third control pipe and the other end of the fourth control pipe are connected to the energy tower group through the energy tower water inlet pipe. The spray end is connected;

The liquid outlet end of the energy tower group is communicated with the solution tank through the second liquid return pipe, the spray pipe of the energy tower group is communicated with the solution tank through the second liquid outlet pipe, and the pipeline of the second liquid outlet pipe is provided with liquid replenishment regeneration pump;

The heat pump unit includes an evaporator and a condenser. One end of the water inlet pipe of the evaporator is communicated with the first control pipe, and the other end is communicated with the water inlet end of the evaporator; one end of the water outlet pipe of the evaporator is communicated with the third control pipe, and the other end is communicated with the third control pipe. The water outlet end of the evaporator is communicated; one end of the water inlet pipe of the condenser is communicated with the second control pipe, and the other end is communicated with the water inlet end of the condenser; one end of the water outlet pipe of the condenser is communicated with the fourth control pipe, and the other end is communicated with the water outlet end of the condenser; Electric valves are provided in the pipelines of the evaporator water inlet pipe, the evaporator water outlet pipe, the condenser water inlet pipe and the condenser water outlet pipe;

The connection between the first control pipe and the second water outlet pipe is provided with an A-1 valve, and the connection between the first control pipe and the energy tower water outlet pipe is provided with a B-2 valve; the connection between the second control pipe and the second water outlet pipe B-1 valve is provided, and A-2 valve is provided at the connection between the second control pipe and the energy tower outlet pipe; A-3 valve is provided at the connection between the third control pipe and the water inlet pipe, and the third control pipe is connected to the energy tower. A B-4 valve is arranged at the connection of the water inlet pipe; a B-3 valve is arranged at the connection between the fourth control pipe and the water inlet pipe, and an A-4 valve is arranged at the connection between the fourth control pipe and the energy tower inlet pipe;

Said A-1 valve, A-2 valve, A-3 valve and A-4 valve as well as B-1 valve, B-2 valve, B-3 valve and B-4 valve are all connected with the controller signal, and The open and closed state of the valve is controlled by the controller.

The water outlet pipes of the energy towers are respectively communicated with the No. 1 water outlet pipes of each energy tower in the energy tower group, and a hand valve is provided at the communication place between the No. The water outlet pipe of the energy tower is also communicated with one end of the sampling pipe, and the other end of the sampling pipe is communicated with a solution concentration detection device, and the solution concentration detection device is used to detect the solution concentration.

The other end of the third control pipe and the other end of the fourth control pipe are communicated with the spray pipe of each energy tower through the energy tower inlet pipe, and the spray pipe is communicated with the sprinkler group in the energy tower. An electric valve is arranged in the spray pipe.

Each energy tower is also provided with a No. 2 water outlet pipe, the No. 2 water outlet pipe is communicated with the second liquid return pipe, the second liquid return pipe is communicated with the solution tank, and the solution tank is connected with the first liquid outlet One end of the pipe is connected, the other end of the first liquid drain pipe is communicated with one end of the first liquid return pipe in the plate heat exchanger, the other end of the first liquid return pipe is connected with the solution tank, and the pipeline of the first liquid drain pipe is provided with There is a regenerative circulation pump.

The sampling pipe is provided with a liquid inlet valve, the solution concentration detection device is used for detecting the concentration of the sample solution, and the solution concentration detection device is connected with a liquid discharge pipe, and a liquid discharge valve is arranged in the liquid discharge pipe.

The water outlet pipe pipeline is provided with a plurality of parallel water outlet pipe branch pipes, and a user water pump is arranged on the pipeline of each water outlet pipe branch pipe; the energy tower water outlet pipe pipeline is provided with a plurality of parallel energy tower water outlet pipes Branch pipes, each energy tower outlet pipe branch pipe is provided with a tower water pump; the second liquid pipe branch pipe is provided with a plurality of parallel second liquid pipe branch pipes, and each second liquid pipe branch pipe is provided with a tower pump; The pipelines are all provided with refilling and regeneration pumps; the pipelines of the first draining pipes are provided with a plurality of first draining pipe branch pipes in parallel, and a regeneration circulating pump is arranged on the pipeline of each first draining pipe branch pipe. The number of the branch pipes of the water outlet pipe, the branch pipe of the water outlet pipe of the energy tower, the branch pipe of the second liquid outlet pipe and the branch pipe of the first liquid outlet pipe are all not less than two.

An outlet valve is arranged at the connection between the second drain pipe and the solution tank, and a check valve is arranged at the connection between the second drain pipe and the spray pipe.

The spray pipe is also communicated with the water supply pipe, and the connection between the water supply pipe and the spray pipe is arranged between the electric valve and the spray head group.

The evaporator water outlet pipe of any heat pump unit in the heat pump unit unit communicates with the evaporator water inlet pipe of the adjacent heat pump unit through the first series countercurrent pipe; the condenser water inlet pipe of any heat pump unit in the heat pump unit unit is connected through the second series connection pipe. The countercurrent pipe is communicated with the condenser water outlet pipe of the adjacent heat pump unit; the pipeline of the first series countercurrent pipe is provided with an evaporator series countercurrent electric valve, and the pipeline of the second series countercurrent pipe is provided with There is a condenser in series with a countercurrent electric valve.

The working methods include conventional cooling mode, host high-efficiency cooling mode, conventional heating mode, host high-efficiency heating mode, solution tank heat storage mode, and solution regeneration mode;

The working method of the conventional refrigeration mode is as follows: the low-temperature water returns to the water collector after absorbing heat at the end of the user, and then is pumped out into the water outlet pipe through the user's water pump. At this time, the A-1 valve, the A-2 valve, the A- 3 Valve and A-4 valve are opened, B-1 valve, B-2 valve, B-3 valve and B-4 valve are closed, and the solution regeneration electric valve is closed; the low-temperature water after heat absorption is driven by the booster of the user's water pump After passing through the A-1 valve, it enters the evaporator in the heat pump unit through the evaporator water inlet pipe. The liquid entering the evaporator releases heat and cools down in the evaporator to form new low temperature water. The newly formed low temperature water passes through the evaporator water outlet pipe and passes through A -3 valve backflow, the new low-temperature water in the backflow flows into the water separator through the water inlet pipe;

The cooling water flows out from the energy tower group and enters the water outlet pipe of the energy tower. The cooling water flows into the condenser through the A-2 valve through the condenser water inlet pipe under the pressure boost of the tower water pump. After the cooling water absorbs heat in the condenser, it flows out through the condenser. The water pipe flows into the energy tower group through the A-4 valve for spraying heat dissipation;

The working method of the high-efficiency cooling mode of the main engine is as follows: the low-temperature water returns to the water collector after absorbing heat at the user end, and then is pumped out into the water outlet pipe through the user's water pump. At this time, the A-1 valve, the A-2 valve, the A-1 valve, the -3 valve and A-4 valve are opened, B-1 valve, B-2 valve, B-3 valve and B-4 valve are closed, the solution regeneration electric valve is closed; the low temperature water after heat absorption is driven by the booster of the user's water pump After passing through the A-1 valve, it enters the evaporator in the first heat pump unit through the evaporator water inlet pipe of the first heat pump unit for the first cooling. At this time, the evaporator water outlet pipe connected with the first heat pump unit and the second heat pump unit The electric valve in the connected evaporator water inlet pipe is closed, and the new low-temperature water after cooling flows into the evaporator of the second heat pump unit through the first series countercurrent pipe to be cooled again, and the low-temperature water that has been cooled again passes through the evaporator of the second heat pump unit. The water outlet pipe is backflowed through the A-3 valve, and the new low-temperature water in the backflow flows into the water separator through the water inlet pipe;

The cooling water flows out through the energy tower group and enters the water outlet pipe of the energy tower. At this time, the electric valves in the condenser water inlet pipe of the first heat pump unit and the condenser water outlet pipe of the second heat pump unit are closed, and the cooling water passes through the booster action of the tower water pump. The A-2 valve flows into the condenser of the second heat pump unit through the condenser water inlet pipe of the second heat pump unit. The cooling water is heated for the first time in the condenser of the second heat pump unit, and the cooling water after the first temperature rise flows into the second series countercurrent pipe. The temperature rises again in the condenser of the first heat pump unit, and the condensed water after the temperature rises again flows into the energy tower group through the A-4 valve through the condenser water outlet pipe of the first heat pump unit for spraying and heat dissipation;

The working method of the conventional heating mode is as follows: the chilled water flows into the water collector after releasing heat at the end of the user, and then is pumped out into the water outlet pipe through the user's water pump. At this time, the A-1 valve, the A-2 valve, the A- 3 Valve and A-4 valve are closed, B-1 valve, B-2 valve, B-3 valve and B-4 valve are open, and the solution regeneration electric valve is closed; after the cooling water is released, it is driven by the boost of the user's water pump. After passing through the B-1 valve, it enters the condenser in the heat pump unit through the condenser water inlet pipe. The chilled water absorbs heat in the condenser to form new chilled water, and the newly formed chilled water flows back through the condenser outlet pipe through the B-3 valve. The returned new chilled water flows into the water divider through the water inlet pipe;

The antifreeze flows out from the energy tower group and enters the water outlet pipe of the energy tower. The antifreeze liquid flows into the evaporator in the heat pump unit through the B-2 valve through the evaporator water inlet pipe under the boosting drive of the tower water pump. After the antifreeze liquid releases heat in the evaporator , through the evaporator water outlet pipe through the B-4 valve into the energy tower group for spraying and heat absorption;

The working method of the high-efficiency heating mode of the main engine is as follows: the chilled water flows into the water collector after releasing heat at the end of the user, and then is pumped out by the user's water pump and enters the water outlet pipe. At this time, the A-1 valve, the A-2 valve, the A-1 valve, the -3 valve and A-4 valve are closed, B-1 valve, B-2 valve, B-3 valve and B-4 valve are open, the solution regeneration electric valve is closed; the chilled water is driven by the boost of the user's water pump after the heat release , enter the condenser of the first heat pump unit through the B-1 valve through the condenser water inlet pipe of the first heat pump unit for the first heating up. At this time, the condenser water outlet pipe connected with the first heat pump unit is connected with the second heat pump unit. The electric valve in the water inlet pipe of the condenser is closed, and the chilled water after the first temperature rise flows into the condenser of the second heat pump unit through the second series countercurrent pipe to be heated again, and the cooling water after the temperature rise again passes through the second heat pump unit. The outlet pipe of the condenser flows back through the B-3 valve, and the returned new chilled water flows into the water separator through the water inlet pipe;

The antifreeze flows out from the energy tower group and enters the water outlet pipe of the energy tower. The antifreeze liquid flows through the B-2 valve through the evaporator water inlet pipe of the first heat pump unit and flows into the evaporator in the first heat pump unit under the boosting drive of the tower water pump for the first discharge. At this time, the water outlet pipe of the evaporator connected to the first heat pump unit and the electric valve in the water inlet pipe of the evaporator connected to the second heat pump unit are closed, and the antifreeze after the first heat release enters the second heat pump through the first series countercurrent pipe. The evaporator in the heat pump unit releases heat again, and the antifreeze liquid after the heat release again flows into the energy tower group through the B-4 valve through the evaporator water outlet pipe connected with the second heat pump unit for spraying and absorbing heat;

The working method of the solution tank heat storage mode is specifically: in the conventional heating mode or the high-efficiency heating mode of the main engine, the control valve at the liquid inlet end of the solution concentration detection device is opened regularly, and the antifreeze liquid flowing into the outlet pipe of the energy tower further flows into The solution concentration detection device closes the control valve when the required antifreeze sample is collected, and discharges the inflowing antifreeze after obtaining the solution concentration of the antifreeze; when the solution concentration is lower than the set value, the solution regeneration electric valve is opened, and the The high-temperature frozen water in the water pipe enters the plate heat exchanger through the first water outlet pipe for heat exchange, and the cooled water flows back to the water inlet pipe through the water outlet pipe of the heat exchanger, and then flows into the water separator after mixing with the heated antifreeze;

The working method of the solution regeneration mode is specifically as follows: when the heat in the solution tank reaches the set temperature, and when it is detected that the solution concentration is lower than the set concentration of the solution regeneration, open the solution tank outlet hand valve disposed at the solution tank outlet, Turn on the rehydration regeneration pump, and the high-temperature dilute solution enters the energy tower for spraying through the check valve to realize the evaporation of water and the concentration of the solution.

A control method for a high-efficiency energy station based on an energy tower, characterized in that: an energy-saving mode can be performed in the process of cooling and heating;

The optimization process of the working state of the energy saving mode is as follows:

S1, when the system has the debugging ability, start up and run;

S2, the model is initially built after the system is turned on. In this system, the tower water pump and the user water pump all use variable frequency water pumps. In the process of establishing the working model,

Obtain the variation model of the power and flow of the tower water pump with the working frequency of the tower water pump;

Obtain the change model of the power and flow of the user's water pump with the working frequency of the user's water pump;

Obtain the variation model of the energy tower power with the working frequency of the fan in the energy tower;

Obtain the variation model of the energy tower approximation degree with the working frequency of the fan and the working frequency of the cooling water pump; the energy tower approximation degree is the difference between the outlet water temperature of the energy tower and the outdoor atmospheric ambient temperature;

Through the analysis and fitting of the collected data, the corresponding empirical relationship is obtained, and the preliminary heat pump unit power and cooling capacity are established with the inlet and outlet temperature and flow of chilled water, and the inlet and outlet temperature and flow of cooling water. Model;

S3, perform routine operation according to the original control logic, and take steady-state data of key data during the operation. The key data include but are not limited to: chilled water flow and inlet and outlet temperatures, cooling water flow and Parameters of inlet and outlet temperatures, power consumption of heat pump units, operating frequency of energy tower fans, and outdoor ambient temperature;

S4, the calibration and calculation of the active optimization model: first, according to the existing preliminary established model, through the collected actual working conditions, calculate the power consumption of the heat pump unit, the power consumption of the tower pump, the power consumption of the user pump, Power consumption of the energy tower, and compare and analyze the deviation of the calculated parameters and the measured parameters. When the deviation exceeds the allowable error range, the model needs to be corrected to guide the error of the model data and the measured data to be within the allowable range;

S5, after the calibration of the active optimization model is completed, the optimal control parameters are calculated and output through the optimization model by inputting the working condition information, wherein the working condition information includes the outdoor atmospheric temperature and the indoor temperature and humidity parameters, and the control parameters include the operation of the tower water pump. Frequency, the working frequency of the user's water pump, the working frequency of the energy tower fan, the chilled water temperature, and output the SCOP of the system;

S6 , in the working process, according to the collected actual working conditions, insert the modified optimization model to obtain the most energy-saving working control parameters, and realize the energy-saving mode operation through the optimal control parameters.

The beneficial effects of the high-efficiency energy station based on the energy tower and the control method thereof are as follows: first, the high-efficiency energy station as a whole can achieve efficient cooling in summer and efficient heating in winter, and has a good energy saving effect; Second, this kind of energy station uses its own waste heat for solution concentration control and regeneration, without the need for additional solution concentration devices, and the dilute solution does not need to be discharged, which does not pollute the environment; third, the heat pump unit adopts two operating modes of parallel and series, which can According to the operation mode, the operating power of each heat pump unit is adjusted, which effectively improves the efficiency of the main engine; fourth, this kind of energy station adopts the setting of parallel water pumps in the user water pump, the replenishment regeneration pump, the tower water pump and the regeneration circulation pump. While adjusting the overall power of the pump set, it can also improve the stability and reliability of the system.

Description of drawings

FIG. 1 is a schematic structural diagram of a high-efficiency energy station based on an energy tower of the present invention.

FIG. 2 is a schematic structural diagram of a user terminal of a high-efficiency energy station based on an energy tower of the present invention.

FIG. 3 is a schematic structural diagram of a heat pump unit unit of a high-efficiency energy station based on an energy tower of the present invention.

FIG. 4 is a schematic structural diagram of a solution concentration control unit of a high-efficiency energy station based on an energy tower of the present invention.

FIG. 5 is a schematic structural diagram of an energy tower group of a high-efficiency energy station based on an energy tower of the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments.

As shown in Figure 1, a high-efficiency energy station based on an energy tower is characterized in that: it comprises an energy tower group 1, a solution concentration control unit 2, a heat pump unit unit 3 and a user terminal 4;

The user terminal 4 is provided with a water separator 5 and a water collector 6, the solution concentration control unit 2 is provided with a solution tank 7 and a plate heat exchanger 8, and the energy tower group 1 includes several The energy tower 9 and the solution concentration detection device 29 are arranged in parallel, and the heat pump unit unit 3 includes several heat pump units 10 arranged in parallel;

The water collector 6 is connected with one end of the water outlet pipe 11, and the other end of the water outlet pipe 11 is connected with the first outlet branch pipe 12 and the second water outlet pipe 13 respectively. The first water outlet pipe 12 is communicated with one end of the heat exchanger water inlet pipe 15, the heat exchanger water inlet pipe 15 is communicated with the heat exchanger water outlet pipe 16 in the plate heat exchanger 8, and the heat exchanger water inlet pipe 15 and the liquid in the water outlet pipe 16 of the heat exchanger are used for heat exchange with the solution in the solution tank 7 through the plate heat exchanger 8. The water outlet pipe 16 of the heat exchanger is communicated with one end of the water inlet pipe 17, and the other end of the water inlet pipe 17 is connected. Connected with the water separator 5, the first water outlet pipe 12 is provided with a solution regeneration electric valve 18;

The second water outlet pipe 13 is communicated with one end of the first control pipe 19 and one end of the second control pipe 20 respectively, and the other end of the first control pipe 19 and the other end of the second control pipe 20 are both communicated with the energy tower outlet pipe 23, so A tower water pump 24 is installed on the pipeline of the energy tower outlet pipe 23, the energy tower outlet pipe 23 is communicated with the liquid outlet end of the energy tower group 1, and the energy tower outlet pipe 23 is also connected with the solution concentration detection device 29. connected;

One end of the water inlet pipe 17 that communicates with the heat exchanger outlet pipe 16 is also communicated with one end of the third control pipe 21 and one end of the fourth control pipe 22, respectively, and the other end of the third control pipe 21 and the other end of the fourth control pipe 22 enter through the energy tower. The water pipe 26 is communicated with the spray end of the energy tower group 1;

The liquid outlet end of the energy tower group 1 is communicated with the solution tank 7 through the second liquid return pipe 34, and the spray pipe 27 of the energy tower group 1 is communicated with the solution tank 7 through the second liquid outlet pipe 35. A fluid replenishing regeneration pump 36 is arranged on the pipeline of the pipe 35;

The heat pump unit 10 includes an evaporator and a condenser. One end of the evaporator water inlet pipe 40 is communicated with the first control pipe 19, and the other end is communicated with the evaporator water inlet end; one end of the evaporator water outlet pipe 41 is communicated with the third control pipe 21. One end of the condenser water inlet pipe 42 is communicated with the second control pipe 20, and the other end is communicated with the condenser water inlet end; one end of the condenser water outlet pipe 43 is communicated with the fourth control pipe 22, and the other One end is communicated with the water outlet end of the condenser; the pipelines of the evaporator water inlet pipe 40, the evaporator water outlet pipe 41, the condenser water inlet pipe 42, and the condenser water outlet pipe 43 are all provided with electric valves;

The connection between the first control pipe 19 and the second water outlet pipe 12 is provided with an A-1 valve 44, and the connection between the first control pipe 19 and the energy tower outlet pipe 23 is provided with a B-2 valve 49; The connection of the second water outlet pipe 12 is provided with a B-1 valve 48, the connection between the second control pipe 20 and the energy tower water outlet pipe 23 is provided with an A-2 valve 45; the connection between the third control pipe 21 and the water inlet pipe 17 A-3 valve 46 is provided, the connection between the third control pipe 21 and the energy tower water inlet pipe 26 is provided with a B-4 valve 51; the connection between the fourth control pipe 22 and the water inlet pipe 17 is provided with a B-3 valve 50, An A-4 valve 47 is provided at the connection between the fourth control pipe 22 and the energy tower water inlet pipe 26;

Said A-1 valve 44, A-2 valve 45, A-3 valve 46 and A-4 valve 47 and B-1 valve 48, B-2 valve 49, B-3 valve 50 and B-4 valve 51 Both are connected with the controller signal, and the open and closed state of the valve is controlled by the controller.

In this embodiment, the water outlet pipes 23 of the energy towers are respectively connected with the No. 1 water outlet pipes 32 of each energy tower 9 in the energy tower group 1, and the No. 1 water outlet pipes 32 at the bottom of each energy tower 9 are connected with the water outlet pipes 23 of the energy towers. A hand valve 25 is provided at the place, the water outlet pipe 23 of the energy tower is also communicated with one end of the sampling pipe 30, and the other end of the sampling pipe 30 is communicated with the solution concentration detection device 29, and the solution concentration detection device 29 is used to detect the solution concentration. .

In this embodiment, the other end of the third control pipe 21 and the other end of the fourth control pipe 22 are communicated with the spray pipe 27 of each energy tower 9 through the energy tower water inlet pipe 26, and the spray pipe 27 is connected to the energy tower 9 The spray head group 28 inside is communicated, and the spray pipe 27 is provided with an electric valve 31 .

In this embodiment, each energy tower 9 is further provided with a No. 2 water outlet pipe 33 , the No. 2 water outlet pipe 33 is communicated with the second liquid return pipe 34 , and the second liquid return pipe 34 is communicated with the solution tank 7 , the solution tank 7 is communicated with one end of the first liquid outlet pipe 37, the other end of the first liquid outlet pipe 37 is communicated with one end of the first liquid return pipe 38 in the plate heat exchanger 8, and the other end of the first liquid return pipe 38 is communicated in the plate heat exchanger 8. Connected with the solution tank 7, a regeneration circulation pump 39 is arranged on the pipeline of the first liquid outlet pipe 37.

In this embodiment, the sampling pipe 30 is provided with a liquid inlet valve, the solution concentration detection device 29 is used to detect the concentration of the sample solution, and the solution concentration detection device 29 is connected with a drain pipe, and the drain pipe A drain valve is provided.

In this embodiment, a plurality of parallel water outlet pipe branch pipes are arranged on the water outlet pipe 11, and a user water pump 14 is arranged on the pipeline of each water outlet pipe branch pipe; the energy tower water outlet pipe 23 is provided with a plurality of parallel connection pipes. The branch pipe of the water outlet pipe of the energy tower is provided with a tower water pump 24 on the pipeline of each branch pipe of the water outlet pipe of the energy tower; The pipeline of the second liquid drain pipe branch pipe is all provided with a rehydration regeneration pump 36; the pipeline of the first liquid drain pipe 37 is provided with a plurality of parallel first liquid drain pipe branch pipes. The pipelines are all provided with regenerative circulation pumps 39, and the number of the branch pipes of the water outlet pipe, the branch pipe of the water outlet pipe of the energy tower, the branch pipe of the second liquid pipe and the branch pipe of the first liquid pipe are all not less than two.

In this embodiment, an outlet valve is provided at the connection between the second drain pipe 35 and the solution tank 7 , and a check valve is provided at the connection between the second drain pipe 35 and the spray pipe 27 .

In this embodiment, the spray pipe 27 is also communicated with the water replenishment pipe, and the connection between the water replenishment pipe and the spray pipe 27 is provided between the electric valve 31 and the sprinkler group 28 .

In this embodiment, the evaporator water outlet pipe 41 of any heat pump unit in the heat pump unit unit 3 communicates with the evaporator water inlet pipe 40 of the adjacent heat pump unit through the first series countercurrent pipe 52; The condenser water inlet pipe 42 of the unit is communicated with the condenser water outlet pipe 43 of the adjacent heat pump unit through the second series countercurrent pipe 53; the pipeline of the first series countercurrent pipe 52 is provided with an evaporator series countercurrent electric valve. 54. A condenser series reverse flow electric valve 55 is arranged in the pipeline of the second series reverse flow pipe 53.

In this embodiment, a capillary network is used at the end of the user, a water pipe is used for communication between the water separator 5 and the water collector 6, and a pressure difference bypass valve is arranged in the pipeline of the water pipe.

In this embodiment, the energy tower 9 adopts a spray tower, and through the spray action, the air flow through the spray tower is used to perform heat exchange on the spray liquid. The specific structure of the spray tower is in the prior art.

The working methods include conventional cooling mode, host high-efficiency cooling mode, conventional heating mode, host high-efficiency heating mode, solution tank heat storage mode, and solution regeneration mode;

In this embodiment, the working method of the conventional refrigeration mode is as follows: the low-temperature water reaches about 12°C after absorbing heat at the end of the user, and then returns to the water collector 6, and then is pumped out through the user's water pump 14 into the water outlet pipe 11. At this time, A -1 valve 44, A-2 valve 45, A-3 valve 46 and A-4 valve 47 open, B-1 valve 48, B-2 valve 49, B-3 valve 50 and B-4 valve 51 closed, the solution The regeneration electric valve 18 is closed; the low-temperature water after heat absorption passes through the A-1 valve 44 under the boosting drive of the user water pump 14, and then enters the evaporator in the heat pump unit 10 through the evaporator water inlet pipe 40, and the liquid entering the evaporator is evaporated. After exothermic cooling in the vessel, a new low-temperature water of about 7°C is formed. The newly formed low-temperature water of about 7°C flows back through the evaporator water outlet pipe 41 and through the A-3 valve 46, and the returned new low-temperature water flows into the water inlet pipe 17. water separator 5;

The cooling water at about 30°C flows out from the energy tower group 1 and enters the energy tower outlet pipe 23. The cooling water flows into the condenser through the A-2 valve 45 through the condenser water inlet pipe 42 under the boosting action of the tower water pump 24, and the cooling water is condensed. After absorbing heat in the condenser, the temperature rises to about 35°C through the condenser water outlet pipe 43 and flows into the energy tower group 1 through the A-4 valve 47 for spraying heat dissipation.

In this embodiment, the working method of the high-efficiency cooling mode of the host is as follows: the low-temperature water returns to the water collector 6 after the heat absorption at the user end reaches about 12 °C, and then is pumped out through the user water pump 14 into the water outlet pipe 11. At this time, A -1 valve 44, A-2 valve 45, A-3 valve 46 and A-4 valve 47 open, B-1 valve 48, B-2 valve 49, B-3 valve 50 and B-4 valve 51 closed, the solution The regeneration electric valve 18 is closed; the low-temperature water after heat absorption passes through the A-1 valve 44 under the boosting drive of the user water pump 14 and then enters the evaporator in the first heat pump unit through the evaporator water inlet pipe 40 of the first heat pump unit for the first time. Cooling, after the first cooling, the temperature reaches about 9.5 ° C. At this time, the electric valve in the evaporator water outlet pipe 41 connected with the first heat pump unit and the evaporator water inlet pipe 40 connected with the second heat pump unit is closed, and the new low temperature after cooling The water flows into the evaporator of the second heat pump unit through the first series countercurrent pipe 52 to be cooled again. After the temperature is lowered again, the temperature reaches about 9.5 °C. The valve 46 is backflowed, and the backflowed new low-temperature water flows into the water separator 5 through the water inlet pipe 17;

The cooling water at about 30°C flows out through the energy tower group 1 and enters the energy tower outlet pipe 23. At this time, the electric valves in the condenser water inlet pipe 42 of the first heat pump unit and the condenser water outlet pipe 43 of the second heat pump unit are closed, and the cooling water Under the boosting action of the tower water pump 24, the A-2 valve 45 flows into the condenser of the second heat pump unit through the condenser water inlet pipe 42 of the second heat pump unit, and the cooling water is heated up in the condenser of the second heat pump unit for the first time. The temperature of the cooling water after the temperature rise reaches about 32.5°C, the cooling water after the first temperature rise flows into the condenser of the first heat pump unit through the second series countercurrent pipe 53 to be heated again, and the temperature of the cooling water after the temperature rise again reaches about 35°C, and again The heated condensed water flows into the energy tower group 1 through the condenser water outlet pipe 43 of the first heat pump unit through the A-4 valve 47 for spraying heat dissipation;

Compared with the conventional cooling mode, the high-efficiency cooling mode of the main engine has a temperature of 12-9.5°C for the inlet and outlet water of the first heat pump unit, and 32.5-35°C for the inlet and outlet water of the condenser. When the temperature rises by 2.5°C, according to the 1°C increase in the evaporation temperature, the system energy efficiency will increase by more than 3%, and the system energy efficiency will increase by about 8%. For the second heat pump unit, the evaporator inlet and outlet temperatures are 9.5-7°C, and the condenser inlet and outlet water. The temperature is 30-32.5°C. Compared with the conventional method, the outlet water temperature of the condenser is reduced by 2.5°C. According to the decrease of 1°C in the condensing temperature, the energy efficiency of the system is increased by about 3.5%. Therefore, in the high-efficiency cooling mode of the main engine, the heat pump unit system in countercurrent series Compared with the traditional cooling mode, the energy efficiency of the system with parallel heat pump units is improved by 8%.

In this embodiment, the working method of the conventional heating mode is as follows: the chilled water flows into the water collector 6 after the heat release at the user end reaches about 40°C, and then is pumped out through the user water pump 14 into the water outlet pipe 11. At this time, A- 1 valve 44, A-2 valve 45, A-3 valve 46 and A-4 valve 47 are closed, B-1 valve 48, B-2 valve 49, B-3 valve 50 and B-4 valve 51 are open, the solution is regenerated The electric valve 18 is closed; the chilled water passes through the B-1 valve 48 under the boosting drive of the user water pump 14 after the heat release, and then enters the condenser in the heat pump unit 10 through the condenser water inlet pipe 42, and the chilled water absorbs heat in the condenser New chilled water at about 45°C is formed, the newly formed chilled water flows back through the condenser water outlet pipe 43 through the B-3 valve 50, and the new refluxed chilled water flows into the water separator 5 through the water inlet pipe 17;

The antifreeze liquid at about 0°C flows out from the energy tower group 1 and enters the energy tower outlet pipe 23. The antifreeze liquid flows into the evaporator in the heat pump unit 10 through the B-2 valve 49 through the evaporator water inlet pipe 40 under the boosting drive of the tower water pump 24. , After the antifreeze releases heat in the evaporator, the temperature drops to about -5°C, and flows into the energy tower group 1 through the evaporator water outlet pipe 41 through the B-4 valve 51 for spraying and heat absorption;

In this embodiment, the working method of the high-efficiency heating mode of the main engine is as follows: the chilled water flows into the water collector 6 after the heat release at the user end reaches about 40°C, and then is pumped out through the user water pump 14 into the water outlet pipe 11. At this time, A-1 valve 44, A-2 valve 45, A-3 valve 46 and A-4 valve 47 are closed, B-1 valve 48, B-2 valve 49, B-3 valve 50 and B-4 valve 51 are open, The solution regeneration electric valve 18 is closed; the chilled water is driven by the booster of the user water pump 14 after the heat release, and enters the condenser of the first heat pump unit through the B-1 valve 48 through the condenser water inlet pipe 42 of the first heat pump unit for the first time. The temperature rises, and the temperature reaches about 42.5 ° C after the first temperature rise. At this time, the electric valve in the condenser water outlet pipe 43 connected with the first heat pump unit and the condenser water inlet pipe 42 connected with the second heat pump unit is closed, and the refrigeration after the first heating The water flows into the condenser of the second heat pump unit through the second series countercurrent pipe 53 to heat up again. After the temperature is raised again, the temperature reaches about 45°C. The cooling water after the temperature rises again passes through the condenser water outlet pipe 43 that is connected to the second heat pump unit. The B-3 valve 50 is backflowed, and the new backflowing chilled water flows into the water separator 5 through the water inlet pipe 17;

The antifreeze at about 0°C flows out from the energy tower group 1 and enters the energy tower outlet pipe 23. The antifreeze is driven by the booster of the tower water pump 24 through the B-2 valve 49 and flows into the first heat pump unit through the evaporator water inlet pipe 40 of the first heat pump unit. The evaporator in the heat pump unit releases heat for the first time, and the temperature drops to about -2.5°C after the first heat release. At this time, the water outlet pipe 41 of the evaporator connected to the first heat pump unit and the water inlet pipe of the evaporator connected to the second heat pump unit The electric valve in 40 is closed, and the antifreeze liquid after the first heat release enters the evaporator in the second heat pump unit through the first series countercurrent pipe 52 to release heat again. The latter antifreeze flows into the energy tower group 1 through the evaporator water outlet pipe 41 communicated with the second heat pump unit and flows into the energy tower group 1 through the B-4 valve 51 to spray and absorb heat;

Compared with the conventional heating mode, the high-efficiency heating mode of the main engine can increase the energy efficiency of the system by more than 3% and the energy efficiency of the system by 8% for every 1°C increase in the evaporation temperature.

In this embodiment, the working method of the solution tank heat storage mode is as follows: in the conventional heating mode or the high-efficiency heating mode of the main engine, the control valve at the liquid inlet end of the solution concentration detection device 29 is opened regularly, and the water flowing into the water outlet pipe 23 of the energy tower is opened. The antifreeze further flows into the solution concentration detection device 29, when the required antifreeze sample is collected, the control valve is closed, and the inflowing antifreeze is discharged after obtaining the solution concentration of the antifreeze; when the solution concentration is lower than the set value, the solution is turned on The electric valve 18 is regenerated, and the high-temperature frozen water of about 40°C in the water outlet pipe 11 enters the plate heat exchanger 39 through the first water outlet pipe 12 for heat exchange, and the cooled water flows back to the water inlet pipe 17 through the water outlet pipe 16 of the heat exchanger, Then it is mixed with the antifreeze after the temperature rise and flows into the water separator 5. At this time, the dilute solution of about 0 ° C in the solution tank 7 enters the plate heat exchanger 39 for heat exchange through the regeneration circulation pump 39;

In this embodiment, the working method of the solution regeneration mode is specifically: when the heat in the solution tank reaches the set temperature, and it is detected that the concentration of the solution is lower than the set concentration of the solution regeneration, the outlet of the solution tank set at the outlet of the solution tank 7 is opened. Hand valve, turn on the rehydration pump 36, and the dilute solution with a high temperature of about 40°C enters the energy tower 9 for spraying through the check valve to realize the evaporation of water and the concentration of the solution.

In the process of cooling and heating, the energy-saving mode can be carried out;

In this embodiment, the work flow of the energy saving mode is as follows:

S1, when the system has the debugging ability, start up and run;

S2, the model is initially built after the system is turned on. In this system, the tower water pump and the user water pump all use variable frequency water pumps. In the process of establishing the working model,

Obtain the variation model of the power and flow of the tower water pump with the operating frequency of the tower water pump; in this embodiment, the tower water pump power P=0.48f ³ , in this model f is the tower water pump operating frequency, and P is the tower water pump power;

Obtain the variation model of the power and flow of the user's water pump with the operating frequency of the user's water pump; in this embodiment, the user's water pump power P=0.32f ³ , where f is the operating frequency of the user's water pump, and P is the power of the user's water pump;

Obtain the variation model of the power of the energy tower with the operating frequency of the fan in the energy tower; in this embodiment, the power of the energy tower is P=0.17 f ³ , in this model f is the operating frequency of the fan in the energy tower, and P is the power of the energy tower;

Obtain the variation model of the energy tower approximation degree with the working frequency of the fan and the working frequency of the cooling water pump; the energy tower approximation degree is the difference between the outlet water temperature of the energy tower and the outdoor atmospheric ambient temperature;

In this embodiment, by analyzing and fitting the collected data, the corresponding empirical relationship is obtained, and the preliminary heat pump unit power and cooling capacity are established with the inlet and outlet temperatures and flow rates of chilled water, and the inlet and outlet temperatures and flow rates of cooling water. The multinomial coupled mathematical model of ; for example, the heat pump power P=0.17*Twi ^0.22 * Two ^0.32 * Tci ^0.28 * Tco ^0.25 * Mwc ^0.17 * Mw ^0.22 , where Twi is the inlet water temperature of the chilled water, Two is the outlet water temperature of the chilled water, and Tci is the cooling The water inlet water temperature and Tco are the cooling water outlet water temperature.

S3, perform routine operation according to the original control logic, and take steady-state data of key data during the operation. The key data include but are not limited to: chilled water flow and inlet and outlet temperatures, cooling water flow and Parameters of inlet and outlet temperatures, power consumption of heat pump units, operating frequency of energy tower fans, and outdoor ambient temperature;

In this embodiment, temperature parameters such as the flow rate and inlet and outlet temperatures of the chilled water, the flow rate and inlet and outlet temperatures of the cooling water, and the temperature of the outdoor atmospheric environment can be directly collected by the temperature measuring devices preset in the pipeline, outdoors, and indoors. get. Using a temperature sensor to collect temperature is a means of the prior art in the art. Since the method of collecting temperature data is not the point of the present invention, the specific connection method of the data collection circuit is described in detail.

S4, the calibration and calculation of the active optimization model: first, according to the existing preliminary established model, through the collected actual working conditions, calculate the power consumption of the heat pump unit, the power consumption of the tower pump, the power consumption of the user pump, The energy tower consumes power, and compares and analyzes the deviation of the calculated parameters and the measured parameters. When the deviation exceeds the allowable error range, the model needs to be corrected to guide the error of the model data and the measured data within the allowable range.

In the process of calibration, by continuously adjusting the input working condition data, the corresponding results are obtained according to the model calculation. In the process of multiple simulations, the model parameters are adjusted according to the simulation results. For example, after the adjustment and correction, the tower pump power becomes P= 0.44f ^2.93 ;

S5, after the calibration of the active optimization model is completed, the optimal control parameters are calculated and output through the optimization model by inputting the working condition information, wherein the working condition information includes the outdoor atmospheric temperature and the indoor temperature and humidity parameters, and the control parameters include the operation of the tower water pump. Frequency, the working frequency of the user's water pump, the working frequency of the energy tower fan, the chilled water temperature, and output the SCOP of the system.

For example, through the simulation of variable working conditions, the calculated COP under 8 working conditions as shown in the following table is obtained, and the optimal COP is given as 5.35. At this time, the tower frequency is 30Hz, the user pump frequency is 30Hz, and the energy tower frequency is 30Hz. 30Hz, and then feedback this parameter to the program to adjust the device frequency.

Tower pump frequency HZ User pump frequency HZ Energy tower frequency HZ Calculate COP 50 50 50 5.22 50 50 30 5.11 50 30 50 5.28 50 30 30 5.13 30 50 50 5.19 30 50 30 5.09 30 30 50 5.31 30 30 30 5.35

The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims (8)

1. A high-efficiency energy station based on an energy tower, characterized in that it comprises an energy tower group (1), a solution concentration control unit (2), a heat pump unit unit (3) and a user terminal (4); The user end (4) is provided with a water separator (5) and a water collector (6), and the solution concentration control unit (2) is provided with a solution tank (7) and a plate heat exchanger (8). ), the energy tower group (1) includes a plurality of energy towers (9) and a solution concentration detection device (29) arranged in parallel, and the heat pump unit unit (3) includes a plurality of heat pump units (10) arranged in parallel ); The water collector (6) is communicated with one end of the water outlet pipe (11), and the other end of the water outlet pipe (11) is communicated with the first outlet branch pipe (12) and the second water outlet pipe (13) respectively. 11) A user water pump (14) is installed on the pipeline, the first water outlet pipe (12) is communicated with one end of the heat exchanger water inlet pipe (15), and the heat exchanger water inlet pipe (15) is connected to the heat exchanger The water outlet pipe (16) is communicated in the plate heat exchanger (8), and the liquid in the heat exchanger water inlet pipe (15) and the heat exchanger water outlet pipe (16) is used for passing through the plate heat exchanger (8) and the liquid in the water outlet pipe (16). The solution in the solution tank (7) undergoes heat exchange, the water outlet pipe (16) of the heat exchanger is communicated with one end of the water inlet pipe (17), and the other end of the water inlet pipe (17) is communicated with the water separator (5). A solution regeneration electric valve (18) is arranged in the first water outlet pipe (12); The second water outlet pipe (13) is respectively communicated with one end of the first control pipe (19) and one end of the second control pipe (20), and the other end of the first control pipe (19) and the other end of the second control pipe (20) Both are communicated with the energy tower outlet pipe (23), a tower water pump (24) is installed on the pipeline of the energy tower outlet pipe (23), and the energy tower outlet pipe (23) is connected to the energy tower group (1). The liquid outlet end is communicated, and the energy tower water outlet pipe (23) is also communicated with the solution concentration detection device (29); One end of the water inlet pipe (17) communicating with the water outlet pipe (16) of the heat exchanger is also communicated with one end of the third control pipe (21) and one end of the fourth control pipe (22) respectively, and the other end of the third control pipe (21) is connected with the first end of the third control pipe (21). The other end of the four control pipes (22) is communicated with the spray end of the energy tower group (1) through the energy tower water inlet pipe (26); The liquid outlet end of the energy tower group (1) is communicated with the solution tank (7) through the second liquid return pipe (34), and the spray pipe (27) of the energy tower group (1) is connected to the solution tank (7) through the second liquid outlet pipe (35). The solution tank (7) is communicated, and a fluid replenishing regeneration pump (36) is arranged on the pipeline of the second liquid outlet pipe (35); The heat pump unit (10) includes an evaporator and a condenser inside, one end of the evaporator water inlet pipe (40) is communicated with the first control pipe (19), and the other end is communicated with the evaporator water inlet end; the evaporator water outlet pipe (41) ) is communicated with the third control pipe (21) at one end, and the other end is communicated with the water outlet end of the evaporator; one end of the condenser water inlet pipe (42) is communicated with the second control pipe (20), and the other end is communicated with the water inlet end of the condenser; One end of the evaporator water outlet pipe (43) is communicated with the fourth control pipe (22), and the other end is communicated with the condenser water outlet end; the evaporator water inlet pipe (40), the evaporator water outlet pipe (41), the condenser water inlet pipe ( 42) Electric valves are provided in the pipeline of the condenser water outlet pipe (43); An A-1 valve (44) is arranged at the connection between the first control pipe (19) and the second water outlet pipe (12), and a B-1 valve (44) is arranged at the connection between the first control pipe (19) and the energy tower outlet pipe (23). 2 valve (49); the connection between the second control pipe (20) and the second water outlet pipe (12) is provided with a B-1 valve (48), and the connection between the second control pipe (20) and the energy tower water outlet pipe (23) is provided. A-2 valve (45) is arranged at the connection; A-3 valve (46) is arranged at the connection between the third control pipe (21) and the water inlet pipe (17), and the third control pipe (21) is connected with the energy tower inlet pipe (26) is provided with a B-4 valve (51); the connection between the fourth control pipe (22) and the water inlet pipe (17) is provided with a B-3 valve (50), and the fourth control pipe (22) is connected to the water inlet pipe (17). An A-4 valve (47) is arranged at the connection of the energy tower water inlet pipe (26); Said A-1 valve (44), A-2 valve (45), A-3 valve (46) and A-4 valve (47) and B-1 valve (48), B-2 valve (49) , B-3 valve (50) and B-4 valve (51) are connected with the controller signal, and the open and closed state of the valve is controlled by the controller. 2. A high-efficiency energy station based on an energy tower according to claim 1, characterized in that: the water outlet pipes (23) of the energy tower are respectively connected with the water outlet of each energy tower (9) in the energy tower group (1). The No. 1 water outlet pipe (32) is connected, and a hand valve (25) is provided at the connection between the No. 1 water outlet pipe (32) at the bottom of each energy tower (9) and the energy tower water outlet pipe (23). The water pipe (23) is also communicated with one end of the sampling pipe (30), and the other end of the sampling pipe (30) is communicated with a solution concentration detection device (29), which is used to detect the solution concentration. 3. A high-efficiency energy station based on an energy tower according to claim 2, characterized in that: the other end of the third control pipe (21) and the other end of the fourth control pipe (22) pass through the energy tower water inlet pipe (26) is communicated with the spray pipe (27) of each energy tower (9), the spray pipe (27) is communicated with the spray head group (28) in the energy tower (9), the spray pipe (27) (27) is provided with an electric valve (31). 4. A high-efficiency energy station based on an energy tower according to claim 3, characterized in that: each energy tower (9) is further provided with a No. 2 water outlet pipe (33), said No. 2 water outlet pipe (33) ) is connected with the second liquid return pipe (34), the second liquid return pipe (34) is connected with the solution tank (7), and the solution tank (7) is connected with one end of the first liquid return pipe (37) , the other end of the first liquid return pipe (37) is communicated with one end of the first liquid return pipe (38) in the plate heat exchanger (8), and the other end of the first liquid return pipe (38) is communicated with the solution tank (7), A regeneration circulation pump (39) is arranged on the pipeline of the first liquid drain pipe (37). 5. A high-efficiency energy station based on an energy tower according to claim 4, characterized in that: the water outlet pipe (11) pipeline is provided with a plurality of parallel water outlet pipe branch pipes, and the pipe of each water outlet pipe branch pipe is User water pumps (14) are arranged on the roads; a plurality of parallel energy tower water outlet pipe branch pipes are arranged on the energy tower water outlet pipe (23) pipeline, and each energy tower water outlet pipe branch pipe is provided with a tower water pump ( 24); the pipeline of the described second drain pipe (35) is provided with a plurality of parallel second drain pipe branch pipes, and the pipeline of each second drain pipe branch pipe is provided with a rehydration regeneration pump (36); The pipeline of the first drain pipe (37) is provided with a plurality of first drain pipe branch pipes in parallel, and the pipeline of each first drain pipe branch pipe is provided with a regeneration circulation pump (39). The number of branch pipes of the water outlet pipe, the branch pipe of the water outlet pipe of the energy tower, the branch pipe of the second liquid outlet pipe and the branch pipe of the first liquid outlet pipe shall be no less than two. 6. A high-efficiency energy station based on an energy tower according to claim 1, characterized in that: the evaporator water outlet pipe (41) of any heat pump unit in the heat pump unit unit (3) passes through the first series countercurrent pipe (52). ) is communicated with the evaporator water inlet pipe (40) of the adjacent heat pump unit; the condenser water inlet pipe (42) of any heat pump unit in the heat pump unit unit (3) passes through the second series countercurrent pipe (53) and is adjacent to it. The condenser water outlet pipe (43) of the heat pump unit is connected; the pipeline of the first series reverse flow pipe (52) is provided with an evaporator series reverse flow electric valve (54), and the second series reverse flow pipe (53) ) is provided with a condenser series countercurrent electric valve (55). 7. A control method for a high-efficiency energy station based on an energy tower as claimed in claim 1: characterized in that: the working method comprises a conventional refrigeration mode, a high-efficiency refrigeration mode of a main engine, a conventional heating mode, and an efficient heating mode of the main engine , Solution tank heat storage mode, solution regeneration mode; The working method of the conventional refrigeration mode is as follows: the low-temperature water returns to the water collector (6) after absorbing heat at the end of the user, and is then pumped out into the water outlet pipe (11) through the user's water pump (14). At this time, A- 1 valve (44), A-2 valve (45), A-3 valve (46) and A-4 valve (47) open, B-1 valve (48), B-2 valve (49), B-3 The valve (50) and the B-4 valve (51) are closed, and the solution regeneration electric valve (18) is closed; the low-temperature water after heat absorption is driven by the user's water pump (14) to pass through the A-1 valve (44) after passing through The evaporator water inlet pipe (40) enters the evaporator in the heat pump unit (10), and the liquid entering the evaporator releases heat in the evaporator to form new low-temperature water, and the newly formed low-temperature water passes through the evaporator water outlet pipe (41) Returning through the A-3 valve (46), the new low-temperature water that returns flows into the water separator (5) through the water inlet pipe (17); The cooling water flows out from the energy tower group (1) and enters the energy tower outlet pipe (23). The cooling water flows into the condenser through the A-2 valve (45) through the condenser water inlet pipe (42) under the pressure boosting action of the tower water pump (24). After the cooling water absorbs heat in the condenser, it flows into the energy tower group (1) through the condenser water outlet pipe (43) through the A-4 valve (47) for spray heat dissipation; The working method of the high-efficiency cooling mode of the host is specifically: the low-temperature water returns to the water collector (6) after absorbing heat at the user end, and is then pumped out through the user water pump (14) into the water outlet pipe (11). At this time, A -1 valve (44), A-2 valve (45), A-3 valve (46) and A-4 valve (47) open, B-1 valve (48), B-2 valve (49), B- 3 Valve (50) and B-4 valve (51) are closed, and the solution regeneration electric valve (18) is closed; the low-temperature water after heat absorption passes through the A-1 valve (44) under the boosting drive of the user water pump (14). Through the evaporator water inlet pipe (40) of the first heat pump unit, it enters the evaporator in the first heat pump unit for the first cooling. At this time, the evaporator water outlet pipe (41) connected with the first heat pump unit is connected with the second heat pump unit. The electric valve in the evaporator water inlet pipe (40) of the second heat pump is closed, and the new low-temperature water after cooling flows into the evaporator of the second heat pump unit through the first series countercurrent pipe (52) to be cooled again, and the low-temperature water cooled again passes through the second heat pump unit. The evaporator water outlet pipe (41) of the heat pump unit flows back through the A-3 valve (46), and the returned new low-temperature water flows into the water separator (5) through the water inlet pipe (17); The cooling water flows out through the energy tower group (1) and enters the energy tower outlet pipe (23). At this time, the electric valve in the condenser water inlet pipe (42) of the first heat pump unit and the condenser water outlet pipe (43) of the second heat pump unit Closed, the cooling water flows into the condenser of the second heat pump unit through the A-2 valve (45) through the condenser water inlet pipe (42) of the second heat pump unit under the boosting action of the tower water pump (24). The temperature in the condenser of the heat pump unit is heated for the first time, and the cooling water after the first temperature rise flows into the condenser of the first heat pump unit through the second series countercurrent pipe (53) to be heated again, and the condensed water after the temperature rise again passes through the condensation of the first heat pump unit. The outlet pipe (43) of the device flows into the energy tower group (1) through the A-4 valve (47) for spraying heat dissipation; The working method of the conventional heating mode is as follows: the chilled water flows into the water collector (6) after releasing heat at the user end, and is then pumped out through the user water pump (14) into the water outlet pipe (11). At this time, the A- 1 valve (44), A-2 valve (45), A-3 valve (46) and A-4 valve (47) closed, B-1 valve (48), B-2 valve (49), B-3 The valve (50) and the B-4 valve (51) are opened, and the solution regeneration electric valve (18) is closed; the chilled water passes through the B-1 valve (48) after the heat release is driven by the boost of the user water pump (14) The condenser water inlet pipe (42) enters the condenser in the heat pump unit (10), the chilled water absorbs heat in the condenser to form new chilled water, and the newly formed chilled water passes through the condenser outlet pipe (43) and passes through the B-3 valve (50) Backflow, the new backflow chilled water flows into the water separator (5) through the water inlet pipe (17); The antifreeze flows out from the energy tower group (1) and enters the energy tower outlet pipe (23). The antifreeze liquid flows into the heat pump through the B-2 valve (49) through the evaporator water inlet pipe (40) under the pressure boost of the tower water pump (24). In the evaporator in the unit (10), after the antifreeze liquid releases heat in the evaporator, it flows into the energy tower group (1) through the evaporator water outlet pipe (41) through the B-4 valve (51) for spraying and absorption of heat; The working method of the efficient heating mode of the main engine is as follows: the chilled water flows into the water collector (6) after releasing heat at the end of the user, and is then pumped out through the user water pump (14) into the water outlet pipe (11). At this time, A -1 valve (44), A-2 valve (45), A-3 valve (46) and A-4 valve (47) closed, B-1 valve (48), B-2 valve (49), B- 3 Valve (50) and B-4 valve (51) are opened, and the solution regeneration electric valve (18) is closed; the chilled water is driven by the boost of the user water pump (14) after the heat release, and passes through the B-1 valve (48) The condenser water inlet pipe (42) of the first heat pump unit enters the condenser of the first heat pump unit for the first heating. At this time, the condenser water outlet pipe (43) connected with the first heat pump unit and the The electric valve in the condenser water inlet pipe (42) is closed, and the chilled water that has been heated for the first time flows into the condenser of the second heat pump unit through the second series countercurrent pipe (53) to be heated again, and the cooling water that has been heated up again passes through with the second heat pump unit. The condenser water outlet pipe (43) connected with the two heat pump units is backflowed through the B-3 valve (50), and the returned new chilled water flows into the water separator (5) through the water inlet pipe (17); The antifreeze flows out from the energy tower group (1) and enters the energy tower outlet pipe (23). The antifreeze is driven by the booster of the tower water pump (24) through the B-2 valve (49) and passes through the evaporator water inlet pipe of the first heat pump unit (40) The evaporator flows into the first heat pump unit to release heat for the first time. At this time, the evaporator water outlet pipe (41) connected to the first heat pump unit and the evaporator water inlet pipe (40) connected to the second heat pump unit The electric valve of the second heat pump unit is closed, the antifreeze liquid after the first heat release enters the evaporator in the second heat pump unit through the first series countercurrent pipe (52) to release heat again, and the antifreeze liquid after the heat release passes through the second heat pump unit. The evaporator water outlet pipe (41) flows into the energy tower group (1) through the B-4 valve (51) for spraying and heat absorption; The working method of the solution tank heat storage mode is as follows: in the conventional heating mode or the high-efficiency heating mode of the main engine, the control valve at the liquid inlet end of the solution concentration detection device (29) is opened regularly, and the water flows into the energy tower outlet pipe (23). ) of the antifreeze further flows into the solution concentration detection device (29), when the required antifreeze sample is collected, the control valve is closed, and the inflowing antifreeze is discharged after the solution concentration of the antifreeze is obtained; when the solution concentration is lower than the set value When the solution regeneration electric valve (18) is opened, the high-temperature frozen water in the water outlet pipe (11) enters the plate heat exchanger (39) through the first water outlet pipe (12) for heat exchange, and the cooled water passes through the heat exchanger The water outlet pipe (16) flows back to the water inlet pipe (17), and then flows into the water separator (5) after being mixed with the heated antifreeze; The working method of the solution regeneration mode is specifically: when the heat in the solution tank reaches the set temperature, and when it is detected that the concentration of the solution is lower than the set concentration of the solution regeneration, opening the outlet of the solution tank arranged at the outlet of the solution tank (7) The hand valve is turned on, the rehydration regeneration pump (36) is turned on, and the high-temperature dilute solution enters the energy tower (9) for spraying through the check valve, so as to realize the evaporation of water and realize the concentration of the solution. 8. The control method for a high-efficiency energy station based on an energy tower according to claim 10, characterized in that: an energy-saving mode can be performed in the process of cooling and heating; The optimization process of the working state of the energy saving mode is as follows: S1, when the system has the debugging ability, start up and run; S2, the model is initially built after the system is turned on. In this system, the tower water pump and the user water pump all use variable frequency water pumps. In the process of establishing the working model, Obtain the variation model of the power and flow of the tower water pump with the working frequency of the tower water pump; Obtain the change model of the power and flow of the user's water pump with the working frequency of the user's water pump; Obtain the variation model of the energy tower power with the working frequency of the fan in the energy tower; Obtain the variation model of the energy tower approximation degree with the working frequency of the fan and the working frequency of the cooling water pump; the energy tower approximation degree is the difference between the outlet water temperature of the energy tower and the outdoor atmospheric ambient temperature; Through the analysis and fitting of the collected data, the corresponding empirical relationship is obtained, and the preliminary heat pump unit power and cooling capacity are established with the inlet and outlet temperature and flow of chilled water, and the inlet and outlet temperature and flow of cooling water. Model; S3, perform routine operation according to the original control logic, and take steady-state data of key data during the operation. The key data include but are not limited to: chilled water flow and inlet and outlet temperatures, cooling water flow and Parameters of inlet and outlet temperatures, power consumption of heat pump units, operating frequency of energy tower fans, and outdoor ambient temperature; S4, the calibration and calculation of the active optimization model: first, according to the existing preliminary established model, through the collected actual working conditions, calculate the power consumption of the heat pump unit, the power consumption of the tower pump, the power consumption of the user pump, Power consumption of the energy tower, and compare and analyze the deviation of the calculated parameters and the measured parameters. When the deviation exceeds the allowable error range, the model needs to be corrected to guide the error of the model data and the measured data to be within the allowable range; S5, after the calibration of the active optimization model is completed, the optimal control parameters are calculated and output through the optimization model by inputting the working condition information, wherein the working condition information includes the outdoor atmospheric temperature and the indoor temperature and humidity parameters, and the control parameters include the operation of the tower water pump. Frequency, the working frequency of the user's water pump, the working frequency of the energy tower fan, the chilled water temperature, and output the SCOP of the system; S6 , in the working process, according to the collected actual working conditions, insert the modified optimization model to obtain the most energy-saving working control parameters, and realize the energy-saving mode operation through the optimal control parameters.

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