Beer fermentation refrigerant supply system

Abstract

The utility model discloses a beer fermentation refrigerant supply system which comprises a refrigerating machine, a refrigerant tank and a refrigerant user, and further comprises a supply pump and an adjusting valve, the refrigerating machine, the refrigerant tank and the supply pump are sequentially communicated in the refrigerant conveying direction, and the refrigerant output end of the supply pump, the refrigerant user and the refrigerant input end of the refrigerating machine are sequentially communicated through a first pipeline; the refrigerant output end of the supply pump, the adjusting valve and the refrigerant input end of the refrigerating machine are sequentially communicated through a second pipeline. According to the beer fermentation refrigerant supply system, leakage points are eliminated, the energy consumption is low, and the secondary utilization efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of beer fermentation refrigerants, in particular to a beer fermentation refrigerant supply system. Background Art

[0002] The beer fermentation process is the normal life activity of brewer's yeast, which utilizes fermentable substances in wort under certain conditions. The metabolic product is the desired product—beer. Because fermentation temperature has a direct impact on beer quality, it is necessary to control the fermentation temperature through the use of refrigerants.

[0003] The principle of traditional beer fermentation refrigerant supply equipment is as follows: the refrigerant in the refrigerant tank is transported to the fermentation tank and other refrigerant users through a group of multiple refrigerant supply pumps in parallel to deliver low-temperature refrigerant. After the low-temperature refrigerant cools the refrigerant user, the high-temperature refrigerant returns to the refrigerant tank. The high-temperature refrigerant circulates inside the refrigerator to lower the refrigerant temperature in the refrigerant tank to the process temperature, and re-forms the low-temperature refrigerant. The circulation pump is no longer turned on during refrigerant preparation.

[0004] However, the above-mentioned beer fermentation refrigerant supply equipment requires the refrigerant circulation pump to be turned on for refrigerant preparation. When the refrigeration system is running for a long time, the mechanical seal of the refrigerant circulation pump will wear out, resulting in leakage. During refrigerant preparation, the refrigeration system (peak and off-season) uses the circulation pump to run for about 12 hours / day. The refrigerant circulation pump is 45KW, and the daily electricity consumption (45*12*0.8) is about 432Kw / h and the annual electricity consumption is about 150,000 degrees, which has high energy consumption. The high-temperature tank is replaced with a plate for refrigeration. The refrigeration system needs to run for 5 hours per shift to reduce the temperature of the refrigerant tank, and the running time of each shift is long. Refrigerant preparation requires the refrigerant circulation pump to be turned on to run the refrigeration system, and the refrigerant circulation pump can be stopped until the refrigerant is cooled. Utility Model Content

[0005] The utility model aims to provide a beer fermentation refrigerant supply system, which eliminates leakage points, has low energy consumption and high secondary utilization efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides a beer fermentation refrigerant supply system, which includes a refrigerator, a refrigerant tank and a refrigerant user, and also includes a supply pump and a regulating valve. The refrigerator, the refrigerant tank and the supply pump are connected in sequence along the refrigerant transportation direction. The refrigerant output end of the supply pump, the refrigerant user and the refrigerant input end of the refrigerator are connected in sequence through a first pipeline; the refrigerant output end of the supply pump, the regulating valve and the refrigerant input end of the refrigerator are connected in sequence through a second pipeline.

[0007] As a further improvement of the present invention, the regulating valve is connected in parallel with a bypass valve via a bypass pipe.

[0008] As a further improvement of the present invention, the refrigerator is a plate heat exchanger, and a pressure sensor for testing the refrigerant pressure is provided in the plate heat exchanger. The pressure sensor is electrically connected to the controller, and the controller is electrically connected to the regulating valve.

[0009] As a further improvement of the present invention, at least two parallel refrigerant users are provided on the first pipeline, and a switch valve is connected in series in front of the refrigerant input end of each refrigerant user.

[0010] As a further improvement of the present invention, there are at least two supply pumps connected in parallel.

[0011] As a further improvement of the present invention, the number of the refrigerant tanks is at least two and they are connected in parallel; the number of the refrigerators is at least two and they are connected in parallel.

[0012] As a further improvement of the present invention, the refrigerant tank is connected to a refrigerant filtering system.

[0013] As a further improvement of the present invention, the refrigerant filtration system includes a third pipe, the bottom of the refrigerant tank is connected to the input end of the third pipe, and the output end of the third pipe is connected to the top of the refrigerant tank; the third pipe is connected to a refrigerant filtration pump and a refrigerant filter.

[0014] Beneficial effects

[0015] Compared with the prior art, the advantages of the beer fermentation refrigerant supply system of the present invention are:

[0016] 1. Since only a supply pump is provided but no refrigerant circulation pump is provided, leakage points are eliminated.

[0017] 2. When refrigerant users require less refrigerant, the number of supply pumps can be reduced by 1-2, thereby saving energy. Chiller operation: Operating at 100% refrigerant capacity provides the highest efficiency and lowest energy consumption. For example, if the refrigerant user receives 50% of the high-temperature refrigerant, the regulating valve supplies 50% of the refrigerant from the refrigerant tank, and the refrigerant reaches 100% capacity, the cooling cycle begins. By adding the regulating valve, the chiller can achieve maximum efficiency at 100% high-temperature refrigerant capacity, reducing energy consumption.

[0018] 3. The refrigerant returned from fermentation is used to provide the medium for plate heat exchange, and the circulation pump is no longer used. The refrigeration system runs about 12 hours / day (peak and off-season). The refrigerant circulation pump is 45KW. The daily circulation pump saves about 432Kw / h of electricity (45*12*0.8), and the annual circulation pump saves about 150,000 kWh of electricity. The amount of refrigerant used for fermentation in peak and off-season is uneven, and the randomness of automatic cooling makes the amount of refrigerant returned from fermentation unable to meet the safety requirements of the plate heat exchanger. When the pressure of the ammonia system of the plate heat exchanger rises, it indicates that the amount of refrigerant returned from fermentation is insufficient. The automatic control system will automatically open the regulating valve to supplement the refrigerant for the plate heat exchanger to ensure its safe and normal operation. However, it also increases the power consumption of the supply pump (75KW) by about 12%, the daily increased power consumption (75*12*0.8*0.12) by about 86KW / h, and the annual increased power consumption by about 31,000 kWh. After stopping the circulation pump, the annual power saving (15-3.1) can be about 119,000 kWh.

[0019] 4. When the return volume of high-temperature refrigerant is insufficient, the refrigerant output from the refrigerant output end of the supply pump is automatically circulated to the refrigerator through the second pipeline through the regulating valve, and then returned to the refrigerant tank to reduce the refrigerant temperature and improve the secondary utilization efficiency.

[0020] 5. A pressure sensor for testing the refrigerant pressure is installed in the plate heat exchanger. When the pressure of the plate heat exchanger drops to 0.2MPa, it indicates that the return amount of the fermentation refrigerant is insufficient. The controller will automatically open the regulating valve to replenish the refrigerant for the plate heat exchanger to ensure its safe and normal operation.

[0021] 6. After canceling the refrigerant high-temperature tank and stopping the circulation pump, the output end of the refrigerant supply pump is connected to the input end of the plate heat exchanger and a regulating valve is installed. The refrigeration system only needs to run for 4 hours per shift, saving 1 hour of system equipment operation.

[0022] 7. The refrigerant filtration system allows the refrigerant in the refrigerant tank to pass through the refrigerant filter to filter out impurities and prevent impurities from clogging the system pipelines.

[0023] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a connection diagram of the beer fermentation refrigerant supply system;

[0026] Figure 2 Schematic diagram of the refrigerant filtration system. DETAILED DESCRIPTION

[0027] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0028] Example

[0029] The specific implementation of the utility model is as follows Figures 1 to 2 As shown, a beer fermentation refrigerant supply system includes a refrigerator 5, a refrigerant tank 1, and a refrigerant user 3, as well as a supply pump 2 and a regulating valve 6. The refrigerator 5, refrigerant tank 1, and supply pump 2 are sequentially connected along the refrigerant delivery direction. The refrigerant output end of the supply pump 2, the refrigerant user 3, and the refrigerant input end of the refrigerator 5 are sequentially connected via a first pipe 8. The refrigerant output end of the supply pump 2, the regulating valve 6, and the refrigerant input end of the refrigerator 5 are sequentially connected via a second pipe 10.

[0030] Regulating valve 6 is connected in parallel to bypass valve 7 via bypass pipe 9. Bypass valve 7 prevents the valve from opening with high resistance due to excessive pressure differential across regulating valve 6. Bypass valve 7 can be used as a backup line. If regulating valve 6 malfunctions or requires maintenance, bypass valve 7 can be opened to maintain the flow of the medium without affecting normal production.

[0031] The refrigerator 5 is a plate heat exchanger, and a pressure sensor for testing the refrigerant pressure is provided inside the plate heat exchanger. The pressure sensor is electrically connected to the controller, and the controller is electrically connected to the regulating valve 6.

[0032] After the refrigerant in refrigerant tank 1 is delivered to refrigerant user 3 by supply pump 2 for cooling, the high-temperature refrigerant flows back through first pipe 8 to the plate heat exchanger for refrigeration, and then flows back into refrigerant tank 1. When the pressure in the plate heat exchanger drops to 0.2MPa, indicating insufficient refrigerant return, the controller automatically opens regulating valve 6 to replenish refrigerant to the plate heat exchanger. At this time, the refrigerant output from the refrigerant output end of supply pump 2 automatically circulates to the plate heat exchanger through second pipe 10 and then flows back into refrigerant tank 1, lowering the refrigerant temperature, improving secondary utilization efficiency, and ensuring safe and normal operation.

[0033] In this embodiment, three refrigerant users 3 are connected in parallel on the first pipeline 8. Each refrigerant user 3 has an on-off valve 4 connected in series in front of its refrigerant input. Refrigerant users 3 can be fermenters, deoxygenated water equipment, or power equipment. By opening and closing the on-off valve 4, refrigerant is delivered to the refrigerant user 3 requiring cooling.

[0034] There are at least two supply pumps 2 connected in parallel, at least two refrigerant tanks 1 connected in parallel, and at least two refrigerators 5 connected in parallel. In this embodiment, there are three supply pumps 2, two refrigerant tanks 1, and two plate heat exchangers.

[0035] Refrigerant tank 1 is connected to a refrigerant filtration system. This system includes a third pipe 11. The bottom of the refrigerant tank 1 is connected to the input end of the third pipe 11, and the output end of the third pipe 11 is connected to the top of the refrigerant tank 1. A refrigerant filter pump 12 and a refrigerant filter 13 are connected to the third pipe 11. Under the action of the refrigerant filter pump 12, the refrigerant in the refrigerant tank 1 enters the third pipe 11 from the bottom of the refrigerant tank 1 and then enters the refrigerant filter 13. After impurities in the refrigerant are filtered out, the refrigerant returns to the refrigerant tank 1 from the top.

[0036] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A beer fermentation refrigerant supply system, comprising a refrigerator (5), a refrigerant tank (1) and a refrigerant user (3), characterized in that: The invention also includes a supply pump (2) and a regulating valve (6); the refrigerator (5), the refrigerant tank (1), and the supply pump (2) are sequentially connected along the refrigerant delivery direction; the refrigerant output end of the supply pump (2), the refrigerant user (3), and the refrigerant input end of the refrigerator (5) are sequentially connected through a first pipe (8); and the refrigerant output end of the supply pump (2), the regulating valve (6), and the refrigerant input end of the refrigerator (5) are sequentially connected through a second pipe (10).

2. A beer fermentation refrigerant supply system according to claim 1, characterized in that: The regulating valve (6) is connected in parallel with a bypass valve (7) via a bypass pipe (9).

3. A beer fermentation refrigerant supply system according to claim 1, characterized in that: The refrigerator (5) is a plate heat exchanger, and a pressure sensor for testing the refrigerant pressure is provided in the plate heat exchanger. The pressure sensor is electrically connected to the controller, and the controller is electrically connected to the regulating valve (6).

4. A beer fermentation refrigerant supply system according to claim 1, characterized in that: At least two parallel-connected refrigerant users (3) are provided on the first pipeline (8), and a switch valve (4) is connected in series in front of the refrigerant input end of each refrigerant user (3).

5. A beer fermentation refrigerant supply system according to claim 4, characterized in that: The number of the supply pumps (2) is at least two and they are connected in parallel.

6. A beer fermentation refrigerant supply system according to claim 1, characterized in that: The number of the refrigerant tanks (1) is at least two and they are connected in parallel with each other; the number of the refrigerators (5) is at least two and they are connected in parallel with each other.

7. A beer fermentation refrigerant supply system according to claim 1, characterized in that: The refrigerant tank (1) is connected to a refrigerant filtering system.

8. A beer fermentation refrigerant supply system according to claim 7, characterized in that: The refrigerant filtration system includes a third pipe (11), the bottom of the refrigerant tank (1) is connected to the input end of the third pipe (11), and the output end of the third pipe (11) is connected to the top of the refrigerant tank (1); the third pipe (11) is connected to a refrigerant filtration pump (12) and a refrigerant filter (13).

Images