Circulating water cooling system of fermentation tank

Abstract

The utility model relates to the technical field of fermentation processing equipment, and discloses a fermentation tank circulating water cooling system which comprises a high-temperature water tank, a low-temperature water tank, an air cooling module, a heat pump utilization module, a circulating water pump, a cooling water pump, an automatic change-over switch and a temperature control three-way valve assembly. The design that the high-temperature water tank is communicated with the low-temperature water tank is adopted, and the air cooling module, the heat pump utilization module, the automatic change-over switch and the temperature control three-way valve assembly are matched, so that the problem that the overall cooling cost of the cooling system cannot be reduced under the condition that the temperature of the fermentation tank is stable is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fermentation processing equipment technical field especially relates to a kind of fermentation tank circulating water cooling system. BACKGROUND

[0002] In the process of rice wine fermentation, since biological fermentation will continuously release heat, it is necessary to continuously provide cold water to take away hot water to maintain the optimum fermentation temperature.

[0003] The conventional scheme is mainly to use river water to reduce the temperature of the fermentation tank, and auxiliary air cooling is used to supplement. However, since the amount of river water used for river water cooling is very large, and the temperature of the river water fluctuates according to the season, it has a certain impact on the production process. When the river water directly enters the cooling process coil or condenser, it may sometimes cause the actual fermentation temperature to be lower than the process requirement, affecting the activity of the fermentation strain and reducing the wine yield; or cause unstable distillation of wine. Therefore, the river water cooling is cancelled, and the air cooling cooling scheme is used entirely.

[0004] After using air cooling cooling entirely, although the cooling water is replaced by circulating water to reduce water consumption, the increase in the number of fans and the total power of the cooling increases the overall cooling cost, and it is urgent to design a cooling system that meets the fermentation cooling requirements and reduces the overall cooling cost. UTILITY MODEL CONTENTS

[0005] In view of the above defects, the purpose of the utility model is to provide a kind of fermentation tank circulating water cooling system, meet the cooling demand of fermentation tank, guarantee the temperature stability of fermentation tank, simultaneously reduce overall cooling cost.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A kind of fermentation tank circulating water cooling system, including high temperature water tank, low temperature water tank, air cooling module, heat pump utilization module, circulating water pump and cooling water pump;

[0008] The outlet of the high temperature water tank is connected to the inlet of the cooling water pump, the outlet of the cooling water pump is connected to the inlet of the air cooling module and the inlet of the heat pump utilization module, the outlet of the air cooling module and the outlet of the heat pump utilization module are both connected to the inlet of the low temperature water tank, the outlet of the low temperature water tank is connected to the inlet of the circulating water pump, the outlet of the circulating water pump is connected to the inlet of the external fermentation tank coil, and the outlet of the fermentation tank coil is connected to the inlet of the high temperature water tank.

[0009] It further includes an automatic switching switch, and the automatic switching switch is used to switch the operating state of the air cooling module.

[0010] The bottom of the high-temperature water tank and the bottom of the low-temperature water tank are provided with a communication pipe for balancing the liquid levels of the high-temperature water tank and the low-temperature water tank.

[0011] The temperature control three-way valve assembly is further provided with a three-way valve connected to the outlet of the fermentation tank coil, the inlet of the high-temperature water tank and the inlet of the circulating water pump.

[0012] Preferably, the temperature control three-way valve assembly is provided with three parallel three-way valves, the temperature control three-way valve assembly comprising a three-way valve, an intelligent actuator, a first thermometer and a second thermometer, the first thermometer being connected to the inlet of the high-temperature water tank, the second thermometer being connected to the outlet of the circulating water pump, and the intelligent actuator being capable of automatically adjusting the opening degree of the three-way valve according to the measured values of the first thermometer and the second thermometer and preset adjustment parameters.

[0013] Preferably, a bypass pipeline is further provided with a pressure gauge and a bypass valve, the bypass pipeline being connected to the outlet of the circulating water pump and the inlet of the high-temperature water tank, and the pressure gauge being arranged at the outlet of the circulating water pump.

[0014] Preferably, an energy meter is further provided at the inlet of the fermentation tank coil.

[0015] Preferably, the high-temperature water tank is provided with a liquid level meter, an electric valve and a water inlet, the water inlet being connected to an external water supply pipeline, the liquid level meter being electrically connected to the electric valve, and the liquid level meter being used for monitoring the liquid level of the high-temperature water tank.

[0016] Preferably, a balance water tank is further provided, the bottom of the balance water tank being connected to the bottoms of the high-temperature water tank and the low-temperature water tank through a communication pipe.

[0017] Preferably, the high-temperature water tank is provided with four parallel high-temperature water tanks, the low-temperature water tank is provided with four parallel low-temperature water tanks, the balance water tank is provided with three parallel balance water tanks, and the circulating water pump is provided with two parallel circulating water pumps.

[0018] Preferably, the outlet pipe diameter of the high-temperature water tank and the low-temperature water tank is DN150, the connecting pipe diameter in the cooling system is DN200, and the high-temperature water tank and the low-temperature water tank are connected to the connecting pipe through a variable diameter connection.

[0019] Preferably, the air-cooled module comprises a group of air-cooled screw water chillers with a refrigerating capacity of 125RT and four air-cooled water chillers with a refrigerating capacity of 50HP.

[0020] Preferably, the heat pump utilization module is a plate heat exchanger, a cold side of a heat exchange plate of the plate heat exchanger is connected to cooling water prepared by the heat pump, an inlet of a hot side of the heat exchange plate of the plate heat exchanger is connected to an outlet of the high-temperature water tank, and an outlet of the hot side of the heat exchange plate of the plate heat exchanger is connected to an inlet of the low-temperature water tank.

[0021] The technical scheme provided by the utility model can have the following beneficial effects:

[0022] During daytime production of the wine workshop, the heat pump utilization module can utilize the chilled water produced by the heat pump waste heat recovery system matched with the wine workshop to reduce the cooling cost, and the air cooling module is used to make up for the insufficient cooling capacity of the heat pump utilization module.

[0023] The high-temperature water tank and the low-temperature water tank are connected, so that the water quantity in the low-temperature water tank does not change greatly to affect the temperature regulation capacity of the system, and the temperature control three-way valve assembly is used to recycle part of the high-temperature water to regulate the temperature of the cooling water to the temperature required by the process, and then the cooling water enters the fermentation tank coil to maintain the fermentation temperature, so that the problem of the local temperature change of the fermentation tank affecting the fermentation due to the low water level in the low-temperature water tank or the great change of the cooling water temperature is solved.

[0024] The air cooling module, the heat pump utilization module, the automatic switching switch and the temperature control three-way valve assembly are matched to solve the problem that the cooling system cannot reduce the overall cooling cost while ensuring the stability of the temperature of the fermentation tank.

[0025] The balance water tank is added to further increase the buffering capacity of the cooling system, and under the normal operation of the system, the water in the balance water tank does not flow into the cooling system in large quantities, so that the problem that the increase of the water quantity in the system causes the temperature of the cold water tank to rise, the circulation quantity of the cooling water to increase and the cooling cost to increase is solved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic view of an embodiment of the utility model.

[0027] Figure 2 It is Figure 1 It is a local enlarged view of A in the middle.

[0028] Wherein: high-temperature water tank 1, low-temperature water tank 2, air cooling module 3, heat pump utilization module 4, circulating water pump 5, cooling water pump 6, fermentation tank 7, temperature control three-way valve assembly 8, first thermometer 81, second thermometer 82, bypass pipeline 9, energy meter 10, balance water tank 11. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "longitudinal" and "lateral" are used interchangeably.

[0031] The orientations or positional relationships indicated by terms such as "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.

[0032] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The embodiments of this utility model are described below with reference to the accompanying drawings.

[0035] A fermenter circulating water cooling system includes a high-temperature water tank 1, a low-temperature water tank 2, an air-cooled module 3, a heat pump utilization module 4, a circulating water pump 5, and a cooling water pump 6.

[0036] The outlet of the high-temperature water tank 1 is connected to the inlet of the cooling water pump 6, the outlet of the cooling water pump 6 is connected to the inlet of the air-cooled module 3 and the inlet of the heat pump utilization module 4, the outlet of the air-cooled module 3 and the outlet of the heat pump utilization module 4 are both connected to the inlet of the low-temperature water tank 2, the outlet of the low-temperature water tank 2 is connected to the inlet of the circulating water pump 5, the outlet of the circulating water pump 5 is connected to the inlet of the external fermentation tank 7 coil, and the outlet of the fermentation tank 7 coil is connected to the inlet of the high-temperature water tank 1.

[0037] The automatic switching switch is further included for switching the running state of the air-cooled module 3.

[0038] The bottom of the high-temperature water tank 1 and the bottom of the low-temperature water tank 2 are provided with a communication pipe for balancing the liquid levels of the high-temperature water tank 1 and the low-temperature water tank 2.

[0039] The temperature control three-way valve assembly 8 is further included, and the three-way valve of the temperature control three-way valve assembly 8 is connected to the outlet of the fermentation tank 7 coil, the inlet of the high-temperature water tank 1 and the inlet of the circulating water pump 5.

[0040] As shown in Figure 1 As shown in

[0041] In an embodiment, the automatic switching switch is a trigger switch with timing and signal input functions in the prior art. The period from 8:00 to 22:00 every day is a peak electricity consumption period with higher electricity cost, and the period from 22:00 to 8:00 the next day is a valley electricity consumption period with lower electricity cost. The cold water tank is provided with a water temperature meter, and the signal input end of the automatic switching switch is electrically connected to the water temperature meter of the cold water tank. During the period from 8:00 to 22:00, if the water temperature of the cold water tank is less than 20℃, it indicates that the cooling capacity of the cooling system is sufficient, and the automatic switching switch closes the air-cooled module 3 to save electricity cost. During the period from 22:00 to 8:00 the next day, if the water temperature of the cold water tank is greater than 16℃, the automatic switching switch opens the air-cooled module 3 to start cooling, and when the water temperature of the cold water tank reaches 9℃, the air-cooled module 3 is closed, thereby solving the problem of high cooling cost due to all-day operation of the air-cooled module 3.

[0042] The fermentation process generates a large amount of heat, and due to the large volume of fermenter 7, uneven cooling is prone to occur. A design connecting high-temperature water tank 1 and low-temperature water tank 2 ensures that the water volume in low-temperature water tank 2 does not fluctuate significantly, affecting the system's temperature regulation capability. A temperature-controlled three-way valve assembly 8 is used to directly circulate some of the high-temperature water back, adjusting the cooling water temperature to the required process temperature before it enters the coils of fermenter 7 to maintain the fermentation temperature. This solves the problem of localized temperature fluctuations in fermenter 7 affecting fermentation caused by excessively low water levels in low-temperature water tank 2 or significant changes in cooling water temperature.

[0043] By combining the air-cooled module 3, the heat pump utilization module 4, the automatic switching switch, and the temperature-controlled three-way valve assembly 8, the problem of the cooling system being unable to reduce the overall cooling cost while ensuring the stable temperature of the fermenter 7 is solved.

[0044] Preferably, three temperature-controlled three-way valve assemblies 8 are arranged side by side. Each temperature-controlled three-way valve assembly 8 includes a three-way valve, an intelligent actuator, a first thermometer 81, and a second thermometer 82. The first thermometer 81 is connected to the inlet of the high-temperature water tank 1, and the second thermometer 82 is connected to the outlet of the circulating water pump 5. The intelligent actuator can automatically adjust the opening degree of the three-way valve according to the measured value of the first thermometer 81, the measured value of the second thermometer 82, and preset adjustment parameters.

[0045] like Figure 2 As shown, in a specific embodiment, the preset parameter is the preset temperature of the second thermometer 82, which is 24°C. When the temperature of the second thermometer 82 is detected to be less than 24°C but greater than 23°C, the three-way valve opens 20%, returning part of the high-temperature water from the outlet of the fermenter 7 coil to the inlet of the circulating water pump 5, thereby increasing the inlet water temperature of the fermenter 7 coil. Three temperature-controlled three-way valve assemblies 8 are used, with two in operation and one as a backup. Using two temperature-controlled three-way valve assemblies 8 simultaneously increases the precision of adjustment, while one temperature-controlled three-way valve assembly 8 serves as a backup for switching to avoid maintenance downtime.

[0046] Preferably, it also includes a bypass pipeline 9, which is equipped with a pressure gauge and a bypass valve. The bypass pipeline 9 is connected to the outlet of the circulating water pump 5 and the inlet of the high-temperature water tank 1, and the pressure gauge is located at the outlet of the circulating water pump 5.

[0047] When the coil of fermenter 7 becomes blocked, the pressure on the pressure gauge rises. When the pressure on the pressure gauge exceeds the preset pressure value, the pressure can be released through the bypass pipe 9, allowing some cooling water to flow back to prevent pipe leakage or rupture. At the same time, the system will issue an alarm to remind workers to perform maintenance.

[0048] Preferably, it also includes an energy meter 10, which is installed at the inlet of the coil of the fermenter 7.

[0049] The operation of the cooling system can be conveniently observed by the energy meter 10, and the display and recording of relevant data can provide reference data for fermentation processing production.

[0050] Preferably, the high-temperature water tank 1 is provided with a liquid level meter, an electric valve and a water inlet, the water inlet is connected to an external water supply pipeline, the liquid level meter is electrically connected to the electric valve, and the liquid level meter is used to monitor the liquid level of the high-temperature water tank 1.

[0051] In a specific embodiment, the water inlet is connected to a tap water supply pipeline, when the water quantity in the cooling system is reduced, the liquid level of the high-temperature water tank 1 is lowered, and the liquid level meter detects that the liquid level is lower than a preset position, the liquid level meter sends a signal to automatically open the electric valve, and tap water is supplemented into the high-temperature water tank 1 through the water inlet, so as to avoid insufficient water quantity in the cooling system.

[0052] Preferably, the balance water tank 11 is further included, and the bottom of the balance water tank 11, the bottom of the high-temperature water tank 1 and the bottom of the low-temperature water tank 2 are communicated through a communication pipe.

[0053] By increasing the balance water tank 11, the buffering capacity of the cooling system is further increased, and at the same time, under the normal operation of the system, the water in the balance water tank 11 will not flow into the cooling system in a large amount, thereby solving the problem that the increase of the water quantity in the system causes the water temperature of the cold water tank to rise, the cooling water circulation quantity to become large, and the cooling cost to increase.

[0054] Preferably, the high-temperature water tank 1 is arranged in parallel with four high-temperature water tanks 1, the low-temperature water tank 2 is arranged in parallel with four low-temperature water tanks 2, the balance water tank 11 is arranged in parallel with three balance water tanks 11, and the circulating water pump 5 is arranged in parallel with two circulating water pumps 5.

[0055] The use of multiple high-temperature water tanks 1, low-temperature water tanks 2 and balance water tanks 11 facilitates switching during maintenance, and the use of two circulating water pumps 5, one of which is standby, avoids downtime caused by failure of the circulating water pump 5.

[0056] Preferably, the outlet pipe diameter of the high-temperature water tank 1 and the low-temperature water tank 2 is DN150, the connecting pipe diameter in the cooling system is DN200, and the high-temperature water tank 1 and the low-temperature water tank 2 are connected to the connecting pipe in a variable diameter manner.

[0057] In a specific embodiment, 15 fermentation tanks 7 with a capacity of 50 tons are arranged, the main connecting pipe diameter in the cooling system is DN200, the outlet pipe diameter of the water tank is DN150, and the maximum instantaneous flow rate of 150 cubic meters per hour required for cooling water in fermentation is met.

[0058] Preferably, the air-cooled module 3 includes a group of air-cooled screw water chillers with a refrigerating capacity of 125 RT and four air-cooled water chillers with a refrigerating capacity of 50 HP.

[0059] Multiple wind cooling equipment is used simultaneously, satisfies cooling system refrigerating capacity, and is convenient for switching and maintenance.

[0060] Preferably, the heat pump utilization module 4 is a plate heat exchanger, the cold side of the heat exchange plate of the plate heat exchanger is connected to the cooling water prepared by the heat pump, the inlet of the hot side of the heat exchange plate of the plate heat exchanger is connected to the outlet of the high-temperature water tank 1, and the outlet of the hot side of the heat exchange plate of the plate heat exchanger is connected to the inlet of the low-temperature water tank 2.

[0061] The plate heat exchanger is used for indirectly exchanging heat between the cooling water in the heat pump and the high-temperature water in the cooling system.

[0062] Other configurations and operations according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail herein.

[0063] In the description of the present application, the description of the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A circulating water cooling system for a fermenter, characterised in that: The system comprises a high-temperature water tank, a low-temperature water tank, an air-cooled module, a heat pump utilization module, a circulating water pump and a cooling water pump. The outlet of the high-temperature water tank is connected to the inlet of the cooling water pump, the outlet of the cooling water pump is connected to the inlet of the air-cooled module and the inlet of the heat pump utilization module, the outlet of the air-cooled module and the outlet of the heat pump utilization module are both connected to the inlet of the low-temperature water tank, the outlet of the low-temperature water tank is connected to the inlet of the circulating water pump, the outlet of the circulating water pump is connected to the inlet of the external fermentation tank coil, and the outlet of the fermentation tank coil is connected to the inlet of the high-temperature water tank. The system further comprises an automatic switching switch for switching the operating state of the air-cooled module. The bottom of the high-temperature water tank and the bottom of the low-temperature water tank are provided with a communication pipe for balancing the liquid level of the high-temperature water tank and the low-temperature water tank. The system further comprises a temperature-controlled three-way valve assembly, and the three-way valve of the temperature-controlled three-way valve assembly is connected to the outlet of the fermentation tank coil, the inlet of the high-temperature water tank and the inlet of the circulating water pump.

2. A circulating water cooling system for a fermenter as claimed in claim 1, wherein: The temperature-controlled three-way valve assembly is provided with three three-way valves in parallel, and the temperature-controlled three-way valve assembly comprises a three-way valve, an intelligent actuator, a first thermometer and a second thermometer.

3. A circulating water cooling system for a fermenter according to claim 1, wherein: The first thermometer is connected to the inlet of the high-temperature water tank, the second thermometer is connected to the outlet of the circulating water pump, and the intelligent actuator can automatically adjust the opening degree of the three-way valve according to the measured value of the first thermometer, the measured value of the second thermometer and the preset adjustment parameter.

4. A circulating water cooling system for a fermenter according to claim 1, wherein: The system further comprises a bypass pipeline provided with a pressure gauge and a bypass valve, and the bypass pipeline is connected to the outlet of the circulating water pump and the inlet of the high-temperature water tank.

5. A circulating water cooling system for a fermenter according to claim 1, wherein: The system further comprises an energy meter provided at the inlet of the fermentation tank coil.

6. A circulating water cooling system for a fermenter according to claim 1, wherein: The high-temperature water tank is provided with a liquid level meter, an electric valve and a water inlet, the water inlet is connected to an external water supply pipeline, the liquid level meter is electrically connected to the electric valve, and the liquid level meter is used for monitoring the liquid level of the high-temperature water tank.

7. A circulating water cooling system for a fermenter as claimed in claim 6, wherein: The system further comprises a balance water tank, and the bottom of the balance water tank, the bottom of the high-temperature water tank and the bottom of the low-temperature water tank are connected by a communication pipe.

8. A circulating water cooling system for a fermenter according to claim 1, wherein: The high-temperature water tank is provided with four high-temperature water tanks in parallel, the low-temperature water tank is provided with four low-temperature water tanks in parallel, the balance water tank is provided with three balance water tanks in parallel, and the circulating water pump is provided with two circulating water pumps in parallel.

9. A circulating water cooling system for a fermenter according to claim 1, wherein: The outlet pipe diameter of the high-temperature water tank and the low-temperature water tank is DN150, the connecting pipe diameter in the cooling system is DN200, and the high-temperature water tank and the low-temperature water tank are connected to the connecting pipe through variable-diameter connection.

10. A circulating water cooling system for a fermenter according to claim 1, wherein: The air-cooled module comprises a group of air-cooled screw water chillers with a refrigerating capacity of 125RT and four air-cooled water chillers with a refrigerating capacity of 50HP. The heat pump utilization module is a plate heat exchanger, the cold side of the heat exchange plate of the plate heat exchanger is connected to the cooling water prepared by the heat pump, the inlet of the hot side of the heat exchange plate of the plate heat exchanger is connected to the outlet of the high-temperature water tank, and the outlet of the hot side of the heat exchange plate of the plate heat exchanger is connected to the inlet of the low-temperature water tank.

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