Production system and energy storage method using compressed nitrogen as energy storage medium in winery

Abstract

The present application relates to the field of wine production technology, and in particular to a production system and energy storage method using compressed nitrogen as a winery energy storage medium. The system includes a connected nitrogen production unit and a nitrogen compressor unit. The nitrogen production unit is used to produce nitrogen from air when the external power grid is in the supply of new energy power or the entire power grid load is at a low point; the nitrogen compressor unit is used to compress the produced nitrogen, and the obtained compressed nitrogen can be directly used in the gas-using section and / or power generation in the wine-making process, and the heat generated by the nitrogen in the compression process can be collected and stored for use in the heat-using section and the cold-using section in the wine-making process. It can be seen that when the new energy power supply or the power grid is at a low point, the power grid is used to produce and compress and store a certain amount of compressed nitrogen, and the heat generated by the compression process is stored through the heat storage system. During production, the stored nitrogen is used for tank pouring, refrigeration, nitrogen filling, short-term power generation, and other tasks.

Description

Technical Field

[0001] The present application relates to the technical field of wine production, and in particular to a production system using compressed nitrogen as an energy storage medium for a winery. Background Art

[0002] At present, in the production process of wine products, it goes through saccharification, fermentation, distillation, wine storage, blending, post-processing and filling. The energy consumption analysis of each process is as follows:

[0003] The long-term stable energy-consuming work during the production period is tank pouring. In each production process, the wine body generally needs to be transferred from one device or tank to another. Sometimes, the wine body needs to be transferred between devices or tanks in the same process. For example, if the winery regularly pours the stored fruit wine into each other to empty the wine tanks and remove the wine mud on the tank wall, the liquor factory will regularly pour the wine of different years into different wine tanks for separate storage. Before filling, the wine bodies of different batches will be mixed and poured. Tank pouring is a long-term energy consumption of the factory. At this stage, it is mainly completed by explosion-proof sanitary pumps;

[0004] The short-term frequent energy consumption during the production period is refrigeration energy consumption. For example, the fermentation process needs to lower the temperature of the fermentation tank, and the wine needs to be frozen during the post-processing and filling stages. In the production of liquor, the energy consumption of steaming wine and grain also belongs to this category.

[0005] Seasonal energy consumption refers to the energy consumption of heating or cooling air conditioning, as well as the temperature control of the wine cellar;

[0006] In addition, the electrical power load of the equipment during production also belongs to the long-term load during the production period.

[0007] It can be seen that how to reduce energy consumption in the wine-making process has become an urgent problem to be solved. Summary of the invention

[0008] The purpose of this application is to provide a production system using compressed nitrogen as the energy storage medium of the winery, a wine production system and an energy storage method using compressed nitrogen as the energy storage medium of the winery, which to a certain extent solves the technical problem of how to reduce energy consumption in the wine making process existing in the prior art.

[0009] The present application provides a production system using compressed nitrogen as a winery energy storage medium, comprising: a nitrogen generator unit and a nitrogen compressor unit connected to each other; wherein the nitrogen generator unit is used to produce nitrogen from air when the external grid power is in the supply of new energy power or the entire grid load is at a low point;

[0010] The nitrogen compressor unit is used to compress the produced nitrogen to obtain compressed nitrogen, which can be directly used in the gas-using section and / or power generation in the wine-making process. At the same time, the heat generated by the nitrogen in the compression process can be collected and stored for use in the heat-using section and the cold-using section in the wine-making process.

[0011] In the above technical solution, further, the nitrogen generator unit includes an air compressor, a nitrogen generator and a nitrogen storage tank which are connected in sequence, and the nitrogen storage tank is connected to the nitrogen compressor unit.

[0012] In any of the above technical solutions, further, the nitrogen generator unit also includes a buffer tank, a compressed air storage tank and a nitrogen buffer tank; wherein the buffer tank is arranged between the air compressor and the nitrogen generator, and is respectively connected to the air compressor and the nitrogen generator;

[0013] The compressed air storage tank is arranged between the buffer tank and the nitrogen generator, and is communicated with the buffer tank and the nitrogen generator respectively; the nitrogen buffer tank is arranged between the nitrogen generator and the nitrogen storage tank, and is communicated with the nitrogen generator and the nitrogen storage tank respectively.

[0014] In any of the above technical solutions, further, the nitrogen generating unit also includes a filter tank, a freeze dryer and an oil and water removal tank which are connected in sequence; wherein the filter tank is connected to the buffer tank; and the oil and water removal tank is connected to the compressed air storage tank.

[0015] In any of the above technical solutions, further, the nitrogen compressor unit includes a nitrogen compressor, a first heat exchange component, a nitrogen high-pressure storage tank, a first adiabatic expansion valve, a second heat exchange component, a nitrogen medium-pressure storage tank, a second adiabatic expansion valve, a third heat exchange component, a nitrogen low-pressure storage tank and a low-pressure buffer tank connected in sequence;

[0016] The nitrogen compressor is connected to the nitrogen generator; the nitrogen high-pressure storage tank is used to store high-pressure nitrogen, which can be used for power generation; the first heat exchange component is used to cool the high-pressure and high-temperature nitrogen to a low-temperature state, and store energy to supply heat to the heat-using section in the wine-making process;

[0017] The second heat exchange component is used to heat up the medium-pressure and low-temperature nitrogen and take away the cold in the gas, and store energy to supply cold to the cold-using section in the wine-making process; the third heat exchange component is used to heat up the low-pressure and low-temperature nitrogen and take away the cold in the gas; the low-pressure buffer tank is used to store low-pressure nitrogen, which can be directly used in the gas-using section in the wine-making process.

[0018] In any of the above technical solutions, further, the first heat exchange assembly includes a first tubular heat exchanger, a heat storage tank, a heat medium pump and a heat supply pump; wherein the first tubular heat exchanger forms a first main channel and a first medium channel separated from each other;

[0019] The heat storage tank comprises a first storage chamber and a second storage chamber separated from each other; the inlet end of the first main channel is connected to the nitrogen compressor, and the outlet end of the first main channel is connected to the nitrogen high-pressure storage tank;

[0020] The inlet end of the first medium channel is connected to the outlet end of the first storage chamber via the heat medium pump; the inlet end of the first storage chamber is connected to the outlet end of the heat-using section; the outlet end of the first medium channel is connected to the inlet end of the second storage chamber, and the outlet end of the second storage chamber is connected to the inlet end of the heat-using section.

[0021] In any of the above technical solutions, further, the second heat exchange assembly includes a second tubular cooler, a cold storage tank, a refrigerant pump and a cold supply pump; wherein the second tubular cooler forms a second main channel and a second medium channel separated from each other;

[0022] The cold storage tank comprises a third storage chamber and a fourth storage chamber which are separated from each other; the inlet end of the second main channel is connected to the nitrogen high-pressure storage tank, and the outlet end of the second main channel is connected to the nitrogen medium-pressure storage tank;

[0023] The inlet end of the second medium channel is connected to the outlet end of the third storage chamber via the refrigerant pump; the inlet end of the third storage chamber is connected to the outlet end of the cold-using section; the outlet end of the second medium channel is connected to the inlet end of the fourth storage chamber, and the outlet end of the fourth storage chamber is connected to the inlet end of the cold-using section;

[0024] And / or, the third heat exchange component includes a third tubular heat exchanger, and the third tubular heat exchanger forms a third main channel and a third medium channel that are separated from each other; the inlet end of the third main channel is connected to the nitrogen medium-pressure storage tank, and the outlet end of the second main channel is connected to the nitrogen low-pressure storage tank; the inlet end of the third medium channel is connected to the cold storage tank via the refrigerant pump, and the outlet end of the third medium channel is connected to the inlet end of the fourth storage chamber.

[0025] In any of the above technical solutions, further, the production system using compressed nitrogen as the winery energy storage medium also includes a reflux buffer tank, and the nitrogen medium-pressure storage tank and the nitrogen low-pressure storage tank are respectively connected to the inlet end of the nitrogen compressor via the reflux buffer tank.

[0026] The present application also provides a wine production system, including a production system using compressed nitrogen as the winery energy storage medium as described in any of the above-mentioned technical solutions. Therefore, it has all the beneficial technical effects of the production system using compressed nitrogen as the winery energy storage medium, which will not be repeated here.

[0027] In the above technical solution, further, the wine production system also includes a wine inlet tank, a wine outlet tank, a discharge tank, a nitrogen inlet pipe and a nitrogen exhaust pipe; wherein the wine inlet tank is connected to the wine outlet tank; the inlet end of the nitrogen inlet pipe is connected to the outlet end of the nitrogen compressor unit of the production system using compressed nitrogen as the energy storage medium of the winery;

[0028] The air inlet of the wine inlet tank and the air inlet of the wine outlet tank are respectively connected to the nitrogen air inlet pipe fitting; the air outlet of the wine inlet tank and the air outlet of the wine outlet tank are respectively connected to the discharge tank via the nitrogen exhaust pipe fitting.

[0029] The present application also provides an energy storage method using compressed nitrogen as the energy storage medium of a winery, the energy storage method using compressed nitrogen as the energy storage medium of a winery comprising the following steps:

[0030] First, use new energy or off-peak electricity as energy to compress air to produce nitrogen;

[0031] The produced nitrogen is compressed to a high-pressure state and stored, and then the high-pressure nitrogen is depressurized to obtain low-pressure nitrogen and stored, and the obtained low-pressure nitrogen is directly used in the gas-using section of the wine-making process;

[0032] At the same time, the heat generated by the nitrogen during the compression process is collected and stored, and can be used in the heat-using section of the wine-making process; the cold energy generated by the compressed nitrogen during the expansion and pressure reduction process is collected and stored, and can be used in the cold-using section of the wine-making process;

[0033] When the gas-using section stops working and the heat-using section and the cold-using section are working, the stored low-pressure nitrogen will be recompressed to complete the refrigeration and heating work.

[0034] Compared with the prior art, the beneficial effects of this application are:

[0035] The production system provided by the present application uses compressed nitrogen as the energy storage medium of the winery. When renewable energy is supplied or the power consumption of the power grid is at low, the power grid electricity is used to produce and compress and store a certain amount of compressed nitrogen. At the same time, the heat generated by the compression process is stored through the heat storage system. During production, the stored nitrogen is used for tank emptying, refrigeration, nitrogen filling, short-term power generation, etc., so as to achieve the purpose of allowing the winery to fully access renewable energy electricity and low-peak electricity of the power grid. It can also be used as a large-scale energy storage unit to achieve the effect of balancing the power grid, while reducing the production cost and carbon emissions of the winery, and reducing pollution.

[0036] The wine production system provided in the present application utilizes low-pressure compressed nitrogen produced by the production system using compressed nitrogen as the energy storage medium of the winery to directly backfill the wine tanks, saving manpower, material resources, and the losses caused by the backfilling process in the prior art.

[0037] In addition, the nitrogen filled into the tank when the strong liquor is poured can play the role of nitrogen sealing without explosion, thus increasing the safety of the tank area.

[0038] In addition, nitrogen will not react with the substances in the wine, thus ensuring the quality of the wine.

[0039] The energy storage method provided by the present application using compressed nitrogen as the energy storage medium of the winery mainly uses the electricity of the power grid to produce and compress and store a certain amount of compressed nitrogen when the power supply is renewable or the power consumption of the power grid is low. At the same time, the heat generated by the compression process is stored through the heat storage system. During production, the stored nitrogen is used for tank emptying, refrigeration, nitrogen filling, short-term power generation and other tasks, so as to achieve the purpose of allowing the winery to fully access renewable energy electricity and low-peak electricity of the power grid. It can also be used as a large-scale energy storage unit to achieve the effect of balancing the power grid, while reducing the production cost and carbon emissions of the winery, and reducing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A schematic diagram of a nitrogen generator provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of a nitrogen compressor unit provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of the nitrogen flow direction of a nitrogen compressor unit provided in an embodiment of the present application;

[0044] Figure 4 A schematic diagram of the cold and heat flow direction of the nitrogen compressor unit provided in an embodiment of the present application;

[0045] Figure 5 A working principle diagram of a production system using compressed nitrogen as a winery energy storage medium provided in an embodiment of the present application;

[0046] Figure 6 This is a working principle diagram of the wine production system provided in the embodiment of the present application.

[0047] Reference numerals:

[0048] 1-nitrogen generator, 101-air compressor, 102-buffer tank, 103-filter tank, 104-freeze dryer, 105-oil and water removal tank, 106-compressed air storage tank, 107-nitrogen generator, 108-nitrogen buffer tank, 109-nitrogen storage tank;

[0049] 2-nitrogen compressor unit, 201-nitrogen compressor, 202-first tubular heat exchanger, 203-nitrogen high-pressure storage tank, 204-heat medium pump, 205-heat storage tank, 206-heat supply pump, 207-first adiabatic expansion valve, 208-second tubular heat exchanger, 209-nitrogen medium-pressure storage tank, 210-second adiabatic expansion valve, 211-third tubular heat exchanger, 212-nitrogen low-pressure storage tank, 213-refrigerant pump, 214-cold storage tank, 215-cold supply pump, 216-low-pressure buffer tank, 217-reflux buffer tank, 218-first heat exchange component, 219-second heat exchange component;

[0050] 3-wine production system, 31-wine inlet tank, 32-wine outlet tank, 33-discharge tank, 34-nitrogen inlet pipe fittings, 35-nitrogen exhaust pipe fittings, 36-switch valve, 37-check valve. DETAILED DESCRIPTION

[0051] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0052] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0053] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0054] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] Refer to the following Figures 1 to 6 Describe a production system using compressed nitrogen as an energy storage medium for a winery, a wine production system, and an energy storage method using compressed nitrogen as an energy storage medium for a winery according to some embodiments of the present application.

[0057] See also Figures 1 to 5 As shown, the embodiment of the present application provides a production system using compressed nitrogen as a winery energy storage medium, comprising: a nitrogen generator unit 1 and a nitrogen compressor unit 2 connected to each other; wherein the nitrogen generator unit 1 is used to produce nitrogen from air when the external power grid is in the supply of new energy power or the entire power grid load is at a low point;

[0058] The nitrogen compressor unit 2 is used to compress the produced nitrogen to obtain compressed nitrogen. The compressed nitrogen can be directly used in the gas-using section and / or power generation in the wine-making process. At the same time, the heat generated by the nitrogen in the compression process can be collected and stored for use in the heat-using section and the cold-using section in the wine-making process.

[0059] It can be seen that in the technical solution provided in this embodiment, when renewable energy is supplied or the grid electricity consumption is low, the electricity of the grid is used to produce and compress and store a certain amount of compressed nitrogen. At the same time, the heat generated by the compression process is stored through the heat storage system. During production, the stored nitrogen is used for tank emptying, refrigeration, nitrogen filling, short-term power generation, etc., so as to achieve the purpose of allowing the winery to fully access renewable energy electricity and grid off-peak electricity. It can also be used as a large-scale energy storage unit to achieve the effect of balancing the grid, while reducing the production cost and carbon emissions of the winery, and reducing pollution.

[0060] In one embodiment of the present application, preferably, Figure 1 As shown, the nitrogen generator unit 1 includes an air compressor 101 , a nitrogen generator 107 and a nitrogen storage tank 109 which are connected in sequence, and the nitrogen storage tank 109 is connected to the nitrogen compressor unit 2 .

[0061] In this embodiment, the air compressor 101 is a standard screw air compressor. When the external power grid is in the supply of new energy power or the entire power grid load is at a low point, the power is turned on to start the air compressor, and the inhaled air is compressed by the matching screw rotating in the equipment. Under the compression of the screw, the air pressure rises to the exhaust pressure requirement and is discharged. Preferably, the exhaust pressure is 0.8MPa. When the compressor pressurizes the air pressure beyond the safety valve limit, the safety valve is activated to release the pressure.

[0062] The nitrogen generator 107 can be particularly selected as 1-07PSA nitrogen generator 107, which is a standard adsorption nitrogen generator unit 1. Its principle is to separate nitrogen and oxygen in the air by utilizing the selective adsorption performance of high-efficiency and high-selectivity solid adsorbents (molecular sieves) on nitrogen and oxygen. The separation effect of molecular sieves on nitrogen and oxygen is mainly based on the different diffusion rates of these two gases on the surface of carbon molecular sieves. Gases with smaller diameters (oxygen) diffuse faster and enter more molecular sieve solid phases, so that nitrogen enrichment components can be obtained in the gas phase. The nitrogen generator 107 is a double-tower alternating operation, so a stable and continuous nitrogen flow is obtained.

[0063] The nitrogen storage tank 109 is a steel tank pressure vessel. The nitrogen generated by the nitrogen generator 107 is stored in the nitrogen storage tank 109 in the form of compressed nitrogen. When the nitrogen compressor 201 uses nitrogen later, it can first use the compressed nitrogen stored in this tank. After the gas pressure in the nitrogen storage tank 109 drops to a certain value, a signal is provided to the front-end nitrogen production system to start nitrogen production.

[0064] In combination with the above, it can be known that the air is first compressed, and then nitrogen is produced using the compressed air as a raw material, and the produced nitrogen is stored in a nitrogen storage tank 109 .

[0065] In one embodiment of the present application, preferably, Figure 1 As shown, the nitrogen generator unit 1 also includes a buffer tank 102, a compressed air storage tank 106 and a nitrogen buffer tank 108; wherein the buffer tank 102 is arranged between the air compressor 101 and the nitrogen generator 107, and is respectively connected to the air compressor 101 and the nitrogen generator 107; the compressed air storage tank 106 is arranged between the buffer tank 102 and the nitrogen generator 107, and is respectively connected to the buffer tank 102 and the nitrogen generator 107; the nitrogen buffer tank 108 is arranged between the nitrogen generator 107 and the nitrogen storage tank 109, and is respectively connected to the nitrogen generator 107 and the nitrogen storage tank 109.

[0066] In this embodiment, the buffer tank 102 is a steel tank pressure vessel, and its main function is to balance the fluctuations generated by the exhaust of compressed air and reduce the damage to subsequent equipment and pipelines caused by pressure fluctuations.

[0067] The compressed air storage tank 106 is a steel tank pressure vessel, and its main function is to store a certain buffer amount of compressed air before it enters the nitrogen generator 107 to avoid a decrease in the working efficiency of the nitrogen generator 107. At the same time, there is another compressed air pipeline on the gas storage tank to the workshop production gas points such as control cabinets.

[0068] The nitrogen buffer tank 108 is a steel tank pressure vessel, and its main function is to buffer the nitrogen flow discharged from the nitrogen generator 107. Since the nitrogen generator 107 needs to use molecular sieve adsorption towers alternately, the discharged nitrogen flow is fluctuating, and the buffer tank 102 is needed to buffer and eliminate the fluctuation of the nitrogen flow.

[0069] In one embodiment of the present application, preferably, Figure 1 As shown, the nitrogen generator unit 1 further includes a filter tank 103 , a freeze dryer 104 and an oil and water removal tank 105 which are connected in sequence; wherein the filter tank 103 is connected to the buffer tank 102 ; and the oil and water removal tank 105 is connected to the compressed air storage tank 106 .

[0070] In this embodiment, the filter tank 103 is a steel tank pressure vessel with a filter element inside to filter out fine dust or large particles of lubricating oil. Each set uses two tanks to work alternately to facilitate replacement of the filter element during work.

[0071] The freeze dryer 104 is a standard compressed air freeze dryer 104, and its main function is to cool the compressed air so as to reduce the dew point temperature of the compressed air and solidify and release the moisture in the compressed air.

[0072] The oil and water removal tank 105 is a standard compressed air oil and water removal tank 105. Its main function is to absorb moisture and oil in the compressed air after cooling to avoid interfering with the subsequent nitrogen production work. Each set uses two tanks to work alternately to facilitate the replacement of adsorbents during work.

[0073] In one embodiment of the present application, preferably, Figures 2 to 5 As shown, the nitrogen compressor unit 2 includes a nitrogen compressor 201, a first heat exchange component 218, a nitrogen high-pressure storage tank 203, a first adiabatic expansion valve 207, a second heat exchange component 219, a nitrogen medium-pressure storage tank 209, a second adiabatic expansion valve 210, a third heat exchange component, a nitrogen low-pressure storage tank 212 and a low-pressure buffer tank 216 which are connected in sequence;

[0074] Among them, the nitrogen compressor 201 is connected to the nitrogen generator unit 1; the nitrogen high-pressure storage tank 203 is used for power generation; the first heat exchange component 218 is used to cool the high-pressure and high-temperature nitrogen to a low-temperature state, and store energy to supply heat to the heat-using section in the wine-making process; the second heat exchange component 219 is used to heat the medium-pressure and low-temperature nitrogen and take away the cold in the gas, and store energy to supply cold to the cold section in the wine-making process;

[0075] The third heat exchange component is used to heat up the low-pressure and low-temperature nitrogen and take away the cold in the gas; the low-pressure buffer tank 216 is used to store low-pressure nitrogen, which can be directly used in the gas-using section of the wine-making process.

[0076] In this embodiment, the nitrogen compressor 201 uses a general high-pressure centrifugal compressor, which is driven by electricity (also new energy electricity or off-peak electricity as energy), and compresses the nitrogen to a high-pressure state (about 10 MPa) through mechanical energy and then stores it in the nitrogen high-pressure storage tank 203.

[0077] The first heat exchange component 218 is used to cool the high-pressure and high-temperature nitrogen to a low-temperature state, and store energy to supply heat to the heat-using sections in the wine-making process.

[0078] The nitrogen high-pressure storage tank 203 is a steel tank pressure vessel (operating pressure 10MPa), which is used to store high-pressure nitrogen as an energy storage material. Therefore, it is the core energy storage equipment in this solution. The size of its storage capacity determines the energy storage capacity of the entire system. If the project construction site has suitable conditions, natural caves, salt wells, oil wells and other closed spaces can also be used as nitrogen high-pressure storage tanks 203. Note that in this system, the nitrogen high-pressure storage tank 203 is connected to the nitrogen intake pipe 34 described below, and is directly used in the gas-using section of the wine-making process, or the nitrogen high-pressure storage tank 203 is connected to the generator turbine through a pipeline for power generation.

[0079] The first adiabatic expansion valve 207 is a special adiabatic expansion and pressure reducing valve group for the refrigeration industry. Its main function is to reduce the pressure of compressed nitrogen and is controlled by the control system through an electric or pneumatic actuator.

[0080] The second heat exchange component 219 is used to heat the medium-pressure and low-temperature nitrogen and take away the cold in the gas, and store energy to supply cold to the cold-using sections in the wine-making process.

[0081] The nitrogen medium-pressure storage tank 209 is a steel tank pressure vessel (operating pressure 6MPa) used to store the reduced-pressure medium-pressure nitrogen. Its main function is to balance the pressure reduction process of compressed nitrogen and play a certain buffering role.

[0082] The second adiabatic expansion valve 210 is a special adiabatic expansion and pressure reduction valve group for the refrigeration industry. Its main function is to reduce the pressure of compressed nitrogen. It is controlled by the control system through an electric or pneumatic actuator.

[0083] The third heat exchange component is used to heat up the low-pressure and low-temperature nitrogen and take away the cold in the gas.

[0084] The nitrogen low-pressure storage tank 212 is a steel tank pressure vessel (operating pressure 0.6MPa) used to store the reduced-pressure low-pressure nitrogen. Its main function is to store the low-pressure nitrogen in the gas-using section.

[0085] The low-pressure buffer tank 216 is a steel tank pressure vessel. When the gas-using section uses nitrogen, the compressed nitrogen stored in this tank can be used first. After the gas pressure in the nitrogen storage tank 109 drops to a certain value, compressed nitrogen can be obtained from the nitrogen low-pressure storage tank 212.

[0086] As can be seen from the above, the nitrogen produced is compressed to a high-pressure state by the nitrogen compressor 201 and stored in the nitrogen high-pressure storage tank 203, and then after two pressure reductions, low-pressure compressed nitrogen is obtained in the low-pressure buffer tank 216. The nitrogen is directly used in the gas-using section. The main gas-using sections include the tank pouring section, the circulation section, the tank in and out section, the filling section, the nitrogen sealing section, etc. In addition, if the user has power generation requirements, a gas pipeline can be connected to the nitrogen high-pressure storage tank 203 to guide the high-pressure nitrogen to generate electricity;

[0087] The heat generated by the nitrogen during the compression process is collected and stored in the heat storage tank 205 and can be used in heat-using sections such as factory heating and temperature control.

[0088] The cold energy generated by the compressed nitrogen during the expansion and decompression process is collected and stored in the cold storage tank 214 and can be used in cold-using processes such as wine cooling, fermentation temperature control, and freezing treatment.

[0089] When the gas-using section is shut down but the cold and heat-using sections are started, the nitrogen in the nitrogen medium-pressure storage tank 209 and the nitrogen low-pressure storage tank 212 can be passed through the reflux buffer tank 217 and re-sucked into the nitrogen compressor 201 through the pipeline and then compressed. The above process is repeated to complete the refrigeration and heating work, while saving the cost of producing nitrogen.

[0090] In one embodiment of the present application, preferably, Figures 2 to 5As shown, the first heat exchange assembly 218 includes a first tubular heat exchanger 202, a heat storage tank 205, a heat medium pump 204 and a heat supply pump 206; wherein the first tubular heat exchanger 202 forms a first main channel and a first medium channel separated from each other; the heat storage tank 205 includes a first storage cavity and a second storage cavity separated from each other; the inlet end of the first main channel is connected to the nitrogen compressor 201, and the outlet end of the first main channel is connected to the nitrogen high-pressure storage tank 203; the inlet end of the first medium channel is connected to the outlet end of the first storage cavity via the heat medium pump 204; the inlet end of the first storage cavity is connected to the outlet end of the heat-using section; the outlet end of the first medium channel is connected to the inlet end of the second storage cavity, and the outlet end of the second storage cavity is connected to the inlet end of the heat-using section.

[0091] In this embodiment, the first tubular heat exchanger 202 is a tubular heat exchange device, and the inside of the main heat exchange tube is compressed high-pressure and high-temperature nitrogen. The high-pressure and high-temperature nitrogen is cooled to a low-temperature state by the low-temperature heat medium in the casing outside the main heat exchange tube.

[0092] The heat storage tank 205 is a heat medium storage tank. The heat medium is stored in the tank after obtaining heat. The outside of the tank is insulated to reduce internal heat loss.

[0093] The heat medium pump 204 is a standard pipeline pump, and the pump model can be selected according to the properties of the heat medium. For example, if water is used as the heat medium, a hot water pump can be selected.

[0094] The heat pump 206 is a standard pipeline pump, which forms a heat supply loop with the heat storage tank 205 and the heat-using section outside the system. After the heat pump 206 is started, the high-temperature heat medium is sent to the heat-using section. The high-temperature heat medium transfers heat to the heat-using section and then returns to the heat storage tank 205.

[0095] Combining the above, it can be known that the first storage chamber of the heat storage tank 205 stores low-temperature heat medium, which is pumped into the first medium channel of the first tubular heat exchanger 202 via the heat medium pump 204, and exchanges heat with the high-pressure and high-temperature nitrogen in the first main channel, eventually forming low-temperature nitrogen and high-temperature heat medium, and the high-temperature heat medium flows out from the first medium channel and flows into the second storage chamber of the heat storage tank 205 for storage. When the heat-using section is started, the high-temperature heat medium flows out from the second storage chamber and flows into the heat-using section through the pipeline to provide heat for the heat-using section. When the heat supply is completed, the high-temperature heat medium is converted into a low-temperature heat medium, and the low-temperature heat medium flows out from the heat-using section and returns to the first storage chamber of the heat storage tank 205 for storage, forming a cycle. It can be seen that the conversion, storage and application of heat are achieved.

[0096] In one embodiment of the present application, preferably, Figures 2 to 5As shown, the second heat exchange component 219 includes a second tubular cooler, a cold storage tank 214, a refrigerant pump 213 and a cold supply pump 215; wherein the second tubular cooler forms a second main channel and a second medium channel separated from each other; the cold storage tank 214 includes a third storage chamber and a fourth storage chamber separated from each other; the inlet end of the second main channel is connected to the nitrogen high-pressure storage tank 203, and the outlet end of the second main channel is connected to the nitrogen medium-pressure storage tank 209; the inlet end of the second medium channel is connected to the outlet end of the third storage chamber via the refrigerant pump 213; the inlet end of the third storage chamber is connected to the outlet end of the cold using section; the outlet end of the second medium channel is connected to the inlet end of the fourth storage chamber, and the outlet end of the fourth storage chamber is connected to the inlet end of the cold using section.

[0097] In this embodiment, the second tubular cooler is a tubular heat exchange device, and the inside of the main heat exchange tube is expanded medium-pressure low-temperature nitrogen. The refrigerant in the sleeve outside the main heat exchange tube heats the medium-pressure low-temperature nitrogen and takes away the cold in the gas.

[0098] The cold storage tank 214 is a refrigerant storage tank. The refrigerant medium is stored in the tank after obtaining cold energy. The outside of the tank body is treated with cold preservation to reduce the internal cold energy loss.

[0099] The refrigerant pump 213 is a standard pipeline pump. The pump model can be selected according to the properties of the refrigerant. For example, if ethylene glycol, calcium chloride or other solutions are used as refrigerants, then the corresponding pump can be selected.

[0100] The cooling pump 215 is a standard pipeline pump, which forms a cooling circuit with the heat storage tank 205 and the cooling section outside the system. After the cooling pump 215 is started, the low-temperature refrigerant is sent to the heat-using section. The low-temperature refrigerant transfers the cold to the cooling section and then returns to the heat storage tank 205.

[0101] Combining the above, it can be seen that the third storage chamber of the cold storage tank 214 stores high-temperature refrigerant, which is pumped into the second medium channel of the second tubular heat exchanger 208 via the refrigerant pump 213, and exchanges heat with the medium-pressure and low-temperature nitrogen in the second main channel, eventually forming high-temperature nitrogen and low-temperature refrigerant, and the low-temperature refrigerant flows out from the second medium channel and flows into the fourth storage chamber of the cold storage tank 214 for storage. When the cold section is started, the low-temperature refrigerant flows out from the fourth storage chamber and flows into the cold section through the pipeline to provide cold for the cold section. When the cold supply is completed, the low-temperature refrigerant is converted into a high-temperature refrigerant, and the high-temperature refrigerant flows out from the cold section and returns to the third storage chamber of the cold storage tank 214 for storage, forming a cycle. It can be seen that the conversion, storage and application of heat are achieved.

[0102] In one embodiment of the present application, preferably, Figures 2 to 4As shown, the third heat exchange component includes a third tubular heat exchanger 211, and the third tubular cold exchanger forms a third main channel and a third medium channel separated from each other; the inlet end of the third main channel is connected to the nitrogen medium-pressure storage tank 209, and the outlet end of the second main channel is connected to the nitrogen low-pressure storage tank 212; the inlet end of the third medium channel is connected to the cold storage tank 214 via the refrigerant pump 213, and the outlet end of the third medium channel is connected to the inlet end of the fourth storage chamber.

[0103] In this embodiment, the third tubular heat exchanger 211 is a tubular heat exchange device. The inside of the main heat exchange tube is expanded low-pressure and low-temperature nitrogen. The low-pressure and low-temperature nitrogen is heated by the refrigerant in the sleeve outside the main heat exchange tube and the cold in the gas is taken away. For details, please refer to the working principle of the aforementioned second tubular heat exchanger 208. In addition, the third tubular heat exchanger 211 and the second tubular heat exchanger 208 share a cold storage tank 214, a refrigerant pump 213 and a cold supply pump 215, which can save the investment in components and reduce production costs.

[0104] In one embodiment of the present application, preferably, Figures 2 to 4 As shown, the production system using compressed nitrogen as the energy storage medium of the winery also includes a reflux buffer tank 217, and the nitrogen medium-pressure storage tank 209 and the nitrogen low-pressure storage tank 212 are respectively connected to the inlet end of the nitrogen compressor 201 via the reflux buffer tank 217.

[0105] In this embodiment, the reflux buffer tank 217 is a steel tank pressure vessel, which stores reflux compressed nitrogen and plays a certain buffering role. That is to say, when the gas-using section is shut down, but the cold and heat-using sections are started, the nitrogen in the nitrogen medium-pressure storage tank 209 and the nitrogen low-pressure storage tank 212 can be refluxed into the reflux buffer tank 217, and then re-sucked into the nitrogen compressor 201 through the pipeline and compressed to complete the refrigeration and heating work, while saving the cost of producing nitrogen.

[0106] The present invention performs the canning operation by filling the wine tank with pressurized nitrogen, so the nitrogen will contact the wine. If compressed air is used to fill the tank, the oxygen component in the air will cause oxidation damage to the wine, or change the anaerobic fermentation, etc.

[0107] The production system provided in this embodiment using compressed nitrogen as the winery energy storage medium has the following advantages:

[0108] The nitrogen filled in when the high-proof liquor is poured can play the role of nitrogen sealing. If compressed air is filled into the high-proof liquor tank, the mixture of air and alcohol gas will easily ignite and explode, increasing the danger of the tank area;

[0109] The system is equipped with a cold and hot thermal storage system to absorb the heat and cold generated when nitrogen is compressed and expanded, making the best use of the introduced electrical energy;

[0110] Compressed nitrogen is used directly during operation, and there is no need to convert the compressed air into secondary electricity through a generator turbine before use like a compressed air energy storage system. This reduces the primary conversion link, increases the efficiency of power supply from the power grid, and reduces energy waste.

[0111] The embodiments of the present application also provide a wine production system 3, including the production system using compressed nitrogen as the energy storage medium of the winery as described in any of the above embodiments. Therefore, it has all the beneficial technical effects of the production system using compressed nitrogen as the energy storage medium of the winery, which will not be repeated here.

[0112] In this embodiment, preferably, Figure 6 As shown, the wine production system 3 also includes a wine inlet tank 31, a wine outlet tank 32, a discharge tank 33, a nitrogen inlet pipe 34 and a nitrogen exhaust pipe 35; wherein the wine inlet tank 31 is connected to the wine outlet tank 32, and preferably, the bottom of the wine inlet tank 31 is connected to the bottom of the wine outlet tank 32; the inlet end of the nitrogen inlet pipe 34 is connected to the outlet end of the nitrogen compressor unit 2 of the production system using compressed nitrogen as the energy storage medium of the winery;

[0113] The air inlet of the wine inlet tank 31 and the air inlet of the wine outlet tank 32 are respectively connected to the nitrogen inlet pipe 34; the air outlet of the wine inlet tank 31 and the air outlet of the wine outlet tank 32 are respectively connected to the discharge tank 33 via the nitrogen exhaust pipe 35.

[0114] In this embodiment, low-pressure compressed nitrogen produced by the production system using compressed nitrogen as the energy storage medium of the winery enters the nitrogen inlet pipe 34, and then enters the inlet and outlet wine tanks 32 respectively through the nitrogen inlet pipe 34, and presses the wine in the outlet wine tank 32 into the inlet wine tank 31, realizing the backfilling operation. After the backfilling is completed, the nitrogen is discharged into the nitrogen exhaust pipe 35, and finally discharged into the discharge tank 33, and discharged into the atmosphere after being filtered by the discharge pipe.

[0115] It can be seen that the low-pressure compressed nitrogen produced by the production system using compressed nitrogen as the energy storage medium of the winery can be used to directly backfill the wine tanks, saving manpower and material resources, as well as the losses caused by the backfilling process in the existing technology.

[0116] In addition, the nitrogen filled into the tank when the strong liquor is poured can play the role of nitrogen sealing without explosion, thus increasing the safety of the tank area.

[0117] In addition, nitrogen will not react with the substances in the wine, thus ensuring the quality of the wine.

[0118] Further, preferably, the wine outlet tank 32, the wine inlet tank 31 and the nitrogen inlet pipe 34 are respectively connected through branch pipes, and the branch pipes are provided with a switch valve 36 and a one-way valve 37, and the switch valve 36 can preferably be a solenoid valve.

[0119] Further, preferably, the wine outlet tank 32, the wine inlet tank 31 and the nitrogen outlet pipe are also connected through branch pipes, and a one-way valve 37 is provided on the branch pipe.

[0120] The embodiments of the present application also provide an energy storage method using compressed nitrogen as the energy storage medium of the winery, which is applied to the production system using compressed nitrogen as the energy storage medium of the winery described in the above embodiments. Therefore, it has all the beneficial technical effects of the production system using compressed nitrogen as the energy storage medium of the winery, which will not be repeated here.

[0121] In one embodiment of the present application, preferably, the energy storage method using compressed nitrogen as the energy storage medium of the winery comprises the following steps:

[0122] First, use new energy or off-peak electricity as energy to compress air to produce nitrogen;

[0123] The produced nitrogen is compressed to a high-pressure state and stored, and then the high-pressure nitrogen is depressurized to obtain low-pressure nitrogen and stored, and the obtained low-pressure nitrogen is directly used in the gas-using section of the wine-making process;

[0124] At the same time, the heat generated by the nitrogen during the compression process is collected and stored, and can be used in the heat-using section of the wine-making process; the cold energy generated by the compressed nitrogen during the expansion and pressure reduction process is collected and stored, and can be used in the cold-using section of the wine-making process;

[0125] When the gas-using section stops working and the heat-using section and the cold-using section are working, the stored low-pressure nitrogen will be recompressed to complete the refrigeration and heating work.

[0126] It can be seen that when renewable energy is supplied or grid electricity is at low power consumption, a certain amount of compressed nitrogen can be produced and compressed and stored using grid electricity. At the same time, the heat generated by the compression process is stored through the heat storage system. During production, the stored nitrogen is used for tank emptying, refrigeration, nitrogen filling, short-term power generation, etc., so that the winery can fully access renewable energy electricity and grid off-peak electricity. It can also be used as a large-scale energy storage unit to achieve the effect of balancing the grid, while reducing the winery's production costs, carbon emissions, and pollution.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A production system using compressed nitrogen as a winery energy storage medium, characterized in that: include: A nitrogen generator set and a nitrogen compressor set are connected; wherein the nitrogen generator set is used to produce nitrogen from air when the external power grid is supplied by new energy or the entire power grid load is at a low point; The nitrogen compressor unit is used to compress the produced nitrogen to obtain compressed nitrogen, which can be directly used in the gas-using section and / or power generation in the wine-making process. At the same time, the heat generated by the nitrogen in the compression process can be collected and stored for use in the heat-using section and the cold-using section in the wine-making process. The nitrogen compressor unit comprises a nitrogen compressor, a first heat exchange component, a nitrogen high-pressure storage tank, a first adiabatic expansion valve, a second heat exchange component, a nitrogen medium-pressure storage tank, a second adiabatic expansion valve, a third heat exchange component, a nitrogen low-pressure storage tank and a low-pressure buffer tank which are connected in sequence; The nitrogen compressor is connected to the nitrogen generator; the nitrogen high-pressure storage tank is used to store high-pressure nitrogen, which can be used for power generation; the first heat exchange component is used to cool the high-pressure and high-temperature nitrogen to a low-temperature state, and store energy to supply heat to the heat-using section in the wine-making process; The second heat exchange component is used to heat up the medium-pressure and low-temperature nitrogen and take away the cold in the gas, and store energy to supply cold to the cold-using section in the wine-making process; the third heat exchange component is used to heat up the low-pressure and low-temperature nitrogen and take away the cold in the gas; the low-pressure buffer tank is used to store low-pressure nitrogen, which can be directly used in the gas-using section in the wine-making process.

2. The production system using compressed nitrogen as the energy storage medium of the winery according to claim 1 is characterized in that: The nitrogen generator unit comprises an air compressor, a nitrogen generator and a nitrogen storage tank which are connected in sequence, and the nitrogen storage tank is connected to the nitrogen compressor unit.

3. The production system using compressed nitrogen as the energy storage medium of the winery according to claim 2 is characterized in that: The nitrogen generator unit further includes a buffer tank, a compressed air storage tank and a nitrogen buffer tank; wherein the buffer tank is arranged between the air compressor and the nitrogen generator, and is respectively connected to the air compressor and the nitrogen generator; The compressed air storage tank is arranged between the buffer tank and the nitrogen generator, and is communicated with the buffer tank and the nitrogen generator respectively; the nitrogen buffer tank is arranged between the nitrogen generator and the nitrogen storage tank, and is communicated with the nitrogen generator and the nitrogen storage tank respectively.

4. The production system using compressed nitrogen as the energy storage medium of the winery according to claim 3 is characterized in that: The nitrogen generator unit further comprises a filter tank, a freeze dryer and an oil and water removal tank which are connected in sequence; wherein the filter tank is connected to the buffer tank; and the oil and water removal tank is connected to the compressed air storage tank.

5. The production system using compressed nitrogen as the energy storage medium of the winery according to claim 1 is characterized in that: The first heat exchange assembly includes a first tubular heat exchanger, a heat storage tank, a heat medium pump and a heat supply pump; wherein the first tubular heat exchanger forms a first main channel and a first medium channel separated from each other; The heat storage tank comprises a first storage chamber and a second storage chamber separated from each other; the inlet end of the first main channel is connected to the nitrogen compressor, and the outlet end of the first main channel is connected to the nitrogen high-pressure storage tank; The inlet end of the first medium channel is connected to the outlet end of the first storage chamber via the heat medium pump; the inlet end of the first storage chamber is connected to the outlet end of the heat-using section; the outlet end of the first medium channel is connected to the inlet end of the second storage chamber, and the outlet end of the second storage chamber is connected to the inlet end of the heat-using section.

6. The production system using compressed nitrogen as the energy storage medium of the winery according to claim 1 is characterized in that: The second heat exchange assembly includes a second tubular cooler, a cold storage tank, a refrigerant pump, and a cold supply pump; wherein the second tubular cooler forms a second main channel and a second medium channel separated from each other; The cold storage tank comprises a third storage chamber and a fourth storage chamber which are separated from each other; the inlet end of the second main channel is connected to the nitrogen high-pressure storage tank, and the outlet end of the second main channel is connected to the nitrogen medium-pressure storage tank; The inlet end of the second medium channel is connected to the outlet end of the third storage chamber via the refrigerant pump; the inlet end of the third storage chamber is connected to the outlet end of the cold-using section; the outlet end of the second medium channel is connected to the inlet end of the fourth storage chamber, and the outlet end of the fourth storage chamber is connected to the inlet end of the cold-using section; And / or, the third heat exchange component includes a third tubular heat exchanger, which forms a third main channel and a third medium channel that are separated from each other; the inlet end of the third main channel is connected to the nitrogen medium-pressure storage tank, and the outlet end of the second main channel is connected to the nitrogen low-pressure storage tank; the inlet end of the third medium channel is connected to the cold storage tank via the refrigerant pump, and the outlet end of the third medium channel is connected to the inlet end of the fourth storage chamber.

7. The production system using compressed nitrogen as the energy storage medium of the winery according to claim 1 is characterized in that: The production system using compressed nitrogen as the winery energy storage medium also includes a reflux buffer tank, and the nitrogen medium-pressure storage tank and the nitrogen low-pressure storage tank are respectively connected to the inlet end of the nitrogen compressor via the reflux buffer tank.

8. A wine production system, characterized in that: It comprises a wine inlet tank, a wine outlet tank, a discharge tank, a nitrogen inlet pipe, a nitrogen exhaust pipe and a production system using compressed nitrogen as an energy storage medium in a winery as described in any one of claims 1 to 7; The wine inlet tank is connected to the wine outlet tank; the inlet end of the nitrogen inlet pipe is connected to the outlet end of the nitrogen compressor unit of the production system using compressed nitrogen as the energy storage medium of the winery; The air inlet of the wine inlet tank and the air inlet of the wine outlet tank are respectively connected to the nitrogen air inlet pipe fitting; the air outlet of the wine inlet tank and the air outlet of the wine outlet tank are respectively connected to the discharge tank via the nitrogen exhaust pipe fitting.

9. An energy storage method using compressed nitrogen as an energy storage medium in a winery, applied to the wine production system as claimed in claim 8, characterized in that: The energy storage method using compressed nitrogen as the energy storage medium of the winery comprises the following steps: First, use new energy or off-peak electricity as energy to compress air to produce nitrogen; The produced nitrogen is compressed to a high-pressure state and stored, and then the high-pressure nitrogen is depressurized to obtain low-pressure nitrogen and stored, and the obtained low-pressure nitrogen is directly used in the gas-using section of the wine-making process; At the same time, the heat generated by the nitrogen during the compression process is collected and stored, and can be used in the heat-using section of the wine-making process; the cold energy generated by the compressed nitrogen during the expansion and pressure reduction process is collected and stored, and can be used in the cold-using section of the wine-making process; When the gas-using section stops working and the heat-using section and the cold-using section are working, the stored low-pressure nitrogen will be recompressed to complete the refrigeration and heating work.

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