CN108917056A - A kind of Novel steam compression refrigerating system - Google Patents

Abstract

The invention discloses a novel vapor compression refrigeration system, which includes multiple refrigeration units and heat exchange devices, each refrigeration unit includes a refrigerator and a cooling tower, the refrigerator includes a refrigeration unit and a cooling unit, and the refrigeration unit passes through a first water outlet pipe, The first water return pipe is connected to the cold end. The refrigeration unit, the first water outlet pipe, the cold end and the first return water pipe constitute a closed-loop circulation system of chilled water. The cooling unit passes through the second water outlet pipe, the second return water pipe and the cooling tower. Connection, the cooling part, the second water outlet pipe, the cooling tower and the second water return pipe constitute a closed-loop circulation system of cooling water, and the heat exchange device includes a refrigeration zone and a cooling zone. In the present invention, in the transition season, the outdoor temperature is more than 4°C lower than the process requirement of the production workshop, and when the temperature in the workshop is higher than the process requirement, the outdoor heat exchange device is used to cool down the production workshop, which reduces the energy consumption caused by the operation of the refrigerator and saves energy. energy.

Description

A New Vapor Compression Refrigeration System

technical field

The invention relates to the technical field of refrigeration, and more specifically relates to a novel vapor compression refrigeration system.

Background technique

The cigarette production process has relatively strict requirements on the temperature and humidity of the production environment. Many cigarette production plants use an independently installed refrigerator to obtain chilled water, and use the chilled water to cool the workshops and office departments in the plant to ensure the temperature and humidity in the workshop. Satisfy process requirements and comfort of personnel in office and production areas. At present, many factories use vapor compression refrigerators to produce chilled water. This kind of refrigeration system consumes a lot of energy, especially in transitional seasons such as spring and autumn, when the temperature difference between indoor and outdoor is not particularly large. If the refrigerator is turned on to cool down, due to The power of the refrigerator is very large, and turning on the refrigerator consumes a lot of electricity. Therefore, how to make the refrigeration system energy-saving operation is particularly important under the premise of ensuring the production process requirements and personnel comfort in the transition season.

Contents of the invention

The purpose of the present invention is to provide a new type of vapor compression refrigeration system. In the transition season, the outdoor temperature is more than 4°C lower than the process requirement of the production workshop, and when the temperature in the workshop is higher than the process requirement, the outdoor heat exchange device is used to cool the production workshop. , which reduces the energy consumption caused by the operation of the refrigerator and saves energy.

To achieve the above object, the present invention adopts the following technical solutions:

A new type of vapor compression refrigeration system, including multiple refrigeration units and heat exchange devices, each refrigeration unit includes a refrigerator and a cooling tower, the refrigerator includes a refrigeration unit and a cooling unit, and the refrigeration unit passes through the first outlet pipe, the first circuit The water pipe is connected to the cold end. The refrigeration unit, the first water outlet pipe, the cold end and the first return pipe constitute a closed-loop circulation system of chilled water. The cooling unit is connected to the cooling tower through the second water outlet pipe and the second return pipe. Department, the second water outlet pipe, the cooling tower and the second water return pipe constitute a closed loop circulation system of cooling water. The heat exchange device includes a cooling zone and a cooling zone. The cooling zone is connected with the first water outlet pipe through the third water outlet pipe, The water return pipe communicates with the first water return pipe, the cooling zone communicates with the second water outlet pipe through the fourth water outlet pipe, and communicates with the second water return pipe through the fourth water return pipe.

A soft rubber joint, a pressure gauge, a thermometer, and a butterfly valve are arranged in sequence on the first water outlet pipe close to the refrigeration unit; the first water return pipe is provided with a first circulating water pump; Rubber soft joints, pressure gauges, thermometers, butterfly valves, butterfly valves, check valves, pressure gauges, rubber soft joints are arranged in sequence on the front part of the return pipe, and the rear part of the first return pipe between the first circulating water pump and the cold end A rubber soft joint, a pressure gauge, a Y-type filter, and a gate valve are arranged in sequence; a rubber soft joint, a pressure gauge, a thermometer, and a butterfly valve are arranged in turn on the position of the second outlet pipe close to the cooling part, and the second return pipe is provided with a For the second circulating water pump, rubber soft joints, pressure gauges, thermometers, butterfly valves, electronic water treatment instruments, butterfly valves, butterfly valves, check valves, pressure Table, rubber soft joint, rubber soft joint, pressure gauge, gate valve and Y-type filter are arranged in sequence on the rear part of the second return water pipe between the second circulating water pump and the cooling tower.

The connection between the third water outlet pipe and the first water outlet pipe is behind the butterfly valve of the first water outlet pipe, and the connection between the third water return pipe and the first water return pipe is located between the two butterfly valves at the front of the first water return pipe. The connection between the fourth water outlet pipe and the second water outlet pipe is located behind the butterfly valve of the second water outlet pipe, and the connection between the fourth water return pipe and the second water return pipe is located at the front of the second water return pipe. Between the butterfly valves at the top, the third water outlet pipe, the third water return pipe, the fourth water outlet pipe, and the fourth water return pipe are sequentially provided with rubber soft joints, pressure gauges, thermometers, and butterfly valves.

The downward slope of the Y-shaped filter is connected with a butterfly valve and an electric valve, and a thermometer and a butterfly valve are arranged on the second outlet pipe close to the cooling tower.

A chilled water collector is provided between the first water outlet pipe and the cold end, and a chilled water collector is arranged between the first water return pipe and the cold end.

The water replenishment end of the chilled water collector is connected with a water replenishment device, and the water replenishment device includes a fully automatic water softener, a soft water tank and a floor-standing expansion water tank arranged in sequence. The soft water pipe is connected with the soft water tank, and the soft water tank and the floor-standing expansion tank are connected through the soft water pipe, and the floor-type expansion water tank is connected with the replenishment end of the chilled water collector through the soft water pipe.

The chilled water water tank is connected to the inlet of the cold end through the cooling water outlet pipe, and the chilled water collector is connected to the outlet of the cold end through the cooling water return pipe.

A balance branch and a water supply branch connected in parallel with the balance branch are arranged between the chilled water water tank and the chilled water collector, a butterfly valve and a balance valve are arranged on the balance branch road, and a butterfly valve is arranged on the water supply branch road; the chilled water tank and the The chilled water collector is provided with a pressure gauge and a thermometer, and the chilled water collector and the lower part of the chilled water collector are connected with plunger valves.

Balance valves are connected between the second water outlet pipes and the second water return pipes of different refrigeration units.

The cooling tower is connected with a tap water replenishment pipe and a soft water replenishment pipe, and both the tap water replenishment pipe and the soft water replenishment pipe are provided with stop valves.

The beneficial effects of the present invention are as follows:

1. In the transitional season, the outdoor temperature is more than 4°C lower than the process requirement of the production workshop, and when the temperature in the workshop is higher than the process requirement, use the outdoor heat exchange device to cool down the production workshop, which saves energy consumption caused by the operation of the refrigerator , effectively saving energy;

2. Install a Y-type filter on the second return pipe. The lower slope of the Y-type filter is connected with a butterfly valve and an electric valve. Scale and sludge are filtered at the Y-type filter and pass through the lower slope of the Y-type filter. The connected butterfly valve and electric valve are discharged, which can effectively avoid scale and sludge on the heat exchange tube wall of the condenser condenser of the refrigerator, and improve heat exchange efficiency;

3. The present invention is not equipped with a cooling water circulation pool. When the second circulating water pump circulates the cooling water, it only needs to overcome the pipe network resistance at the pipe network, valves, elbows and cooling towers in the pipeline system, and does not need to provide Energy is saved by transporting cooling water from the surface of the pool to the cooling tower.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Figure 2 is an enlarged view of A in Figure 1;

Figure 3 is an enlarged view at B in Figure 1;

Fig. 4 is an enlarged view of point C in Fig. 1 .

Detailed ways

The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention , so it has no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure of the present invention without affecting the functions and objectives of the present invention. within the range covered by the technical content. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without any substantial change in the technical content.

As shown in Figures 1 to 4, a novel vapor compression refrigeration system includes a plurality of refrigeration units and heat exchange devices 2, each refrigeration unit includes a refrigerator 1 and a cooling tower 3, and the refrigerator 1 includes a refrigeration unit 4 and Cooling section 5. The refrigeration unit 4 is connected to the cold end through the first water outlet pipe 6 and the first water return pipe 7. The refrigeration unit 4, the first water outlet pipe 6, the cold end and the first water return pipe 7 constitute a closed-loop circulation system of chilled water. The cooling part 5 is connected to the cooling tower 3 through the second water outlet pipe 8 and the second water return pipe 9, and the cooling part 5, the second water outlet pipe 8, the cooling tower 3 and the second water return pipe 9 constitute a closed-loop circulation system of cooling water. The heat exchange device 2 includes a cooling zone and a cooling zone. The cooling zone communicates with the first water outlet pipe 6 through the third water outlet pipe 10, communicates with the first water return pipe 7 through the third water return pipe 11, and communicates with the cooling zone through the fourth water outlet pipe 12. The second water outlet pipe 8 communicates with the second water return pipe 9 through the fourth water return pipe 13 .

The position of the first outlet pipe 6 close to the refrigeration unit 4 is provided with a rubber soft joint 14, a pressure gauge 15, a thermometer 16, and a butterfly valve 17 in sequence, and the first return pipe 7 is provided with a first circulating water pump 18. The refrigeration unit 4 and The front part of the first return pipe between the first circulating water pumps 18 is provided with a rubber soft joint 14, a pressure gauge 15, a thermometer 16, a butterfly valve 17, a butterfly valve 17, a check valve 23, a pressure gauge 15, a rubber soft joint 14, A rubber soft joint 14, a pressure gauge 15, a Y-type filter 19, and a gate valve 20 are arranged in sequence on the rear part of the first water return pipe between the first circulating water pump 18 and the cold end. The position of the second outlet pipe 8 close to the cooling part 5 is provided with a rubber soft joint 14, a pressure gauge 15, a thermometer 16, and a butterfly valve 17 in sequence; the second return pipe 9 is provided with a second circulating water pump 21, and the cooling part 5 and The front portion of the second return pipe between the second circulating water pumps 21 is sequentially provided with a rubber soft joint 14, a pressure gauge 15, a thermometer 16, a butterfly valve 17, an electronic water treatment instrument 22, a butterfly valve 17, a butterfly valve 17, a check valve 23, Pressure gauge 15, rubber soft joint 14, rubber soft joint 14, pressure gauge 15, gate valve 20, Y-type filter 19 are arranged successively on the rear part of the second return pipe between the second circulating water pump 21 and cooling tower 3.

The connection between the third water outlet pipe 10 and the first water outlet pipe 6 is located behind the butterfly valve 17 of the first water outlet pipe 6, and the connection between the third water return pipe 11 and the first water return pipe 7 is located at two fronts of the first water return pipe. Between the two butterfly valves 17, the connection between the fourth water outlet pipe 12 and the second water outlet pipe 8 is behind the butterfly valve 17 of the second water outlet pipe 8, and the connection between the fourth water return pipe 13 and the second water return pipe 9 is located at the first water return pipe 9. Between the electronic water treatment instrument 22 at the front of the two return pipes and the butterfly valve 17 close to the cooling unit 5, the third water outlet pipe 10, the third water return pipe 11, the fourth water outlet pipe 12, and the fourth water return pipe 13 are all in order A rubber soft joint 14, a pressure gauge 15, a thermometer 16, and a butterfly valve 17 are provided.

The downward slope of the Y-shaped filter 19 is connected with a butterfly valve 17 and an electric valve 24 , and a thermometer 16 and a butterfly valve 17 are arranged on the second outlet pipe 8 near the cooling tower 3 .

A chilled water collector 25 is provided between the first water outlet pipe 6 and the cold end, and a chilled water collector 26 is arranged between the first water return pipe 7 and the cold end.

The water replenishment end of the chilled water collector 26 is connected with a water replenishment device, and the water replenishment device includes a fully automatic water softener 27, a soft water tank 28 and a floor-standing expansion water tank 29 arranged in sequence, and the water inlet end of the fully automatic water softener 27 is connected with tap water. Connected, the water outlet is communicated with the soft water tank 28 through the soft water pipe, the soft water tank 28 and the floor-type expansion tank 29 are connected by the soft water tube, and the floor-type expansion tank 29 is connected with the replenishment end of the chilled water collector 26 through the soft water tube.

The chilled water water tank 25 is connected to the inlet of the cold end through the cooling water outlet pipe, and the chilled water collector 26 is connected to the outlet of the cold end through the cooling water return pipe.

Between the chilled water water tank 25 and the chilled water collector 26, a balance branch and a water supply branch connected in parallel with the balance branch are provided. A butterfly valve 17 and a balance valve 30 are arranged on the balance branch, and a butterfly valve 17 is provided on the water supply branch; The chilled water water tank 25 and the chilled water water collector 26 are provided with a pressure gauge 15 and a thermometer 16, and the lower parts of the frozen water water tank 25 and the frozen water water tank 26 are connected with a plunger valve 31.

Balance valves 30 are connected between the second outlet pipes and the second return pipes of different refrigeration units.

The cooling tower 3 is connected with a tap water replenishment pipe and a soft water replenishment pipe, and both the tap water replenishment pipe and the soft water replenishment pipe are provided with stop valves.

The specific working principle is as follows:

1. When the temperature is high in summer, use the refrigerator 1 to cool

1. Chilled water circulation path:

Under the action of the first circulating water pump 18, chilled water flows into the first water outlet pipe 6 from the cooling part 4 of the refrigerator 1, and then flows through the rubber soft joint 14, the pressure gauge 15, the thermometer 16, and the butterfly valve 17, and then the different refrigerators 1 After the chilled water is collected together, it flows into the chilled water tank 25. The chilled water flows from multiple branches of the chilled water tank 25 to the cold end. When the chilled water passes through the cold end, the temperature increases and flows out from the cold end The chilled water is collected into the chilled water collector 26, and then flows from the chilled water collector 26 into the first return pipe 7, flows through the gate valve 20, the Y-shaped filter 19, the pressure gauge 15, and the rubber soft joint 14 into the first return pipe 7. A circulating water pump 18, the chilled water flowing out from the first circulating water pump 18 flows back through the rubber soft joint 14, the pressure gauge 15, the check valve 23, the butterfly valve 17, the butterfly valve 17, the thermometer 16, the pressure gauge 15, and the rubber soft joint 14 Inside the refrigeration unit 4.

2. Cooling water circulation path:

Under the action of the second circulating water pump 21, the cooling water flows into the second outlet pipe 8 from the cooling part 5 of the refrigerator 1, then flows through the rubber soft joint 14, the pressure gauge 15, the thermometer 16, and the butterfly valve 17, and then flows into the corresponding In the cooling tower 3, the cooling water flowing out from the cooling tower 3 is collected and enters the second return water pipe 9, and flows through the Y-shaped filter 19, butterfly valve 17, and rubber soft joint 14 in sequence to enter the second circulating water pump 21, and from the second circulating water The chilled water flowing out of the water pump 21 flows back through the rubber soft joint 14, pressure gauge 15, check valve 23, butterfly valve 17, butterfly valve 17, electronic water treatment instrument 22, butterfly valve 17, thermometer 16, pressure gauge 15, and rubber soft joint 14. Inside the cooling unit 5.

3. Soft water replenishment process:

Tap water first enters fully automatic water softener 27 to soften, and the water after softening enters soft water tank 28, floor type expansion water tank 29 successively, and the water in the floor type expansion water tank 29 enters chilled water water collector 26 through soft water pipe.

2. During the transitional season, when the outdoor temperature in the transitional season is more than 4°C lower than the temperature required by the production workshop process, and the temperature in the workshop is higher than the temperature required by the process due to the heat dissipation of equipment and personnel in the production workshop, then use the heat exchange device 2 for refrigeration

1. Chilled water circulation path:

Under the action of the first circulating water pump 18, chilled water flows into the third outlet pipe 10 from the cooling zone of the heat exchange device 2, then flows through the rubber soft joint 14, pressure gauge 15, thermometer 16, and butterfly valve 17, and then flows into the first outlet pipe 6. Then the chilled water from different refrigerators 1 is collected together and then flows into the chilled water tank 25 together. The chilled water flows from the multiple branches of the chilled water tank 25 to the cold end, and the chilled water flowing out from the cold end is collected. into the chilled water collector 26, then flow into the first return pipe 7 from the chilled water collector 26, flow through the gate valve 20, Y-shaped filter 19, pressure gauge 15, rubber soft joint 14 and enter the first circulating water pump 18 , the chilled water flowing out from the first circulating water pump 18 flows into the third return pipe 11 after passing through the rubber flexible joint 14, pressure gauge 15, check valve 23, and butterfly valve 17, and then flows through the butterfly valve 17, thermometer 16, pressure gauge 15, rubber The flexible joint 14 then flows back into the cooling zone of the heat exchange device 2 .

2. Cooling water circulation path:

Under the action of the second circulating water pump 21, the cooling water flows into the fourth water outlet pipe 12 from the cooling area of the heat exchange device 2, then flows through the rubber soft joint 14, pressure gauge 15, thermometer 16, butterfly valve 17, and then flows into the second water outlet pipe 8. Then it flows into the corresponding cooling tower 3, and the cooling water flowing out from the cooling tower 3 is collected and enters the second return pipe 9, and then flows through the Y-shaped filter 19, butterfly valve 17, and rubber soft joint 14 to enter the second cycle. Water pump 21, the frozen water flowing out from the second circulating water pump 21 flows into the fourth return pipe 13 after passing through the rubber soft joint 14, pressure gauge 15, check valve 23, butterfly valve 17, butterfly valve 17, and electronic water treatment instrument 22, and flows through the butterfly valve 17. The thermometer 16, the pressure gauge 15, and the soft rubber joint 14 flow back into the cooling zone of the heat exchange device 2.

In the transition season, the outdoor temperature is more than 4°C lower than the process requirement of the production workshop, and when the temperature in the workshop is higher than the process requirement, the outdoor heat exchange device 2 is used to cool the production workshop, thus reducing the energy consumption caused by the operation of the refrigerator 1 , saving energy.

Because the cooling water in the cooling water circulation system contains a certain amount of scale, and when the cooling water exchanges heat and moisture with the outdoor air in the cooling tower 3, a large number of dust, impurities and bacteria in the atmosphere enter the cooling water circulation system. As the cooling water is continuously lost to the outside in the cooling tower, the water in the system needs to be continuously replenished, resulting in the continuous accumulation of scale and sludge in the system. Scale and sludge in the system will adhere to the heat exchange tube wall of the condenser 1 condenser. Since the thermal conductivity of calcium carbonate is 0.05w/mk and the thermal conductivity of copper is 14.6w/mk, 1mm thick scale can increase energy consumption by 10-16%. With the increase of scale and sludge thickness on the heat exchange tubes, the heat exchange effect of the condenser deteriorates sharply, which eventually leads to a sharp drop in cooling capacity. A Y-shaped filter 19 is installed on the second return pipe 9, and the downward slope of the Y-shaped filter 19 is connected with a butterfly valve 17 and an electric valve 24. Scale and sludge are filtered at the Y-shaped filter 19 and passed through the Y-shaped filter The butterfly valve 17 and the electric valve 24 connected to the lower slope of the device 19 are discharged, which can effectively avoid scale and sludge on the heat exchange tube wall of the condenser of the refrigerator 1.

The present invention adopts the waterless pool type cooling water circulation. When the second circulating water pump 21 circulates the cooling water, it only needs to overcome the pipe network resistance at the pipe network, valves, elbows and cooling towers 3 in the pipeline system, and does not need to provide Energy consumption for transporting cooling water from the water surface of the pool to the water outlet in the cooling tower 3 .

Balance valves 30 are connected between the second water outlet pipes 8 and the second return water pipes 9 of different refrigeration units. Automatically adjust the water flow pressure of the branch to ensure that the fluctuation of the water flow pressure of each branch is not large, and effectively avoid the phenomenon of uneven heating and cooling of each branch.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (10)

1. A novel vapor compression refrigeration system, comprising a plurality of refrigeration units, each refrigeration unit comprising a refrigerator and a cooling tower, the refrigerator comprising a refrigeration unit and a cooling unit, the refrigeration unit is connected to the first outlet pipe, the first return pipe and Connected by the cold end, the refrigeration unit, the first outlet pipe, the cold end and the first return pipe constitute a closed-loop circulation system of chilled water, the cooling unit is connected to the cooling tower through the second outlet pipe and the second return pipe, the cooling unit, The second water outlet pipe, the cooling tower and the second water return pipe constitute a closed-loop circulation system of cooling water, which is characterized in that it also includes a heat exchange device, the heat exchange device includes a refrigeration zone and a cooling zone, and the refrigeration zone is connected to the first water outlet pipe through the third water outlet pipe. The first water outlet pipe communicates with the first water return pipe through the third water return pipe, the cooling zone communicates with the second water outlet pipe through the fourth water outlet pipe, and communicates with the second water return pipe through the fourth water return pipe. 2. The novel vapor compression refrigeration system according to claim 1, characterized in that: the position of the first water outlet pipe close to the refrigeration unit is provided with a rubber soft joint, a pressure gauge, a thermometer, and a butterfly valve in sequence; There is a first circulating water pump, and rubber soft joints, pressure gauges, thermometers, butterfly valves, butterfly valves, check valves, pressure gauges, and rubber soft joints are arranged in sequence on the front part of the first return water pipe between the refrigeration unit and the first circulating water pump , the rear part of the first return pipe between the first circulating water pump and the cold end is provided with a rubber soft joint, a pressure gauge, a Y-shaped filter, and a gate valve in sequence; There are rubber soft joints, pressure gauges, thermometers, butterfly valves, a second circulating water pump on the second return water pipe, and rubber soft joints and pressure gauges on the front of the second return water pipe between the cooling unit and the second circulating water pump. , thermometer, butterfly valve, electronic water treatment instrument, butterfly valve, butterfly valve, check valve, pressure gauge, rubber soft joint, rubber soft joint, pressure Meter, gate valve, Y-type strainer. 3. The new vapor compression refrigeration system according to claim 2, characterized in that: the connection between the third water outlet pipe and the first water outlet pipe is behind the butterfly valve of the first water outlet pipe, and the third return water pipe is connected to the first water outlet pipe. The connection of the return pipe is located between the two butterfly valves at the front of the first return pipe, the connection between the fourth outlet pipe and the second outlet pipe is behind the butterfly valve of the second outlet pipe, and the connection between the fourth return pipe and the second return pipe is The connection of the water pipe is located between the electronic water treatment instrument at the front of the second return pipe and the butterfly valve near the cooling part. There are rubber soft joints, pressure gauges, thermometers, and butterfly valves. 4. The new vapor compression refrigeration system according to claim 2, characterized in that: the downward slope of the Y-shaped filter is connected with a butterfly valve and an electric valve, and a thermometer is provided on the second outlet pipe near the cooling tower and butterfly valves. 5. The novel vapor compression refrigeration system according to claim 1, characterized in that: a chilled water dispenser is provided between the first water outlet pipe and the cold end, and a water cooler is provided between the first return pipe and the cold end. Chilled water trap. 6. The novel vapor compression refrigeration system according to claim 5, characterized in that: the replenishment end of the chilled water collector is connected with a replenishment device, and the replenishment device includes a fully automatic water softener, a soft water tank and Floor-standing expansion tank, the water inlet end of the automatic water softener is connected to tap water, the water outlet is connected to the soft water tank through a soft water pipe, the soft water tank and the floor-standing expansion tank are connected through a soft water pipe, and the floor-standing expansion tank is connected to chilled water through a soft water pipe Water collector connection on the make-up side. 7. The novel vapor compression refrigeration system according to claim 6, characterized in that: the chilled water water device is connected to the inlet of the cold end through the cooling water outlet pipe, and the chilled water collector is connected to the outlet of the cold end through the cooling water return pipe connect. 8. The novel vapor compression refrigerating system according to claim 7, characterized in that: a balance branch and a water supply branch connected in parallel with the balance branch are arranged between the chilled water water tank and the chilled water collector. Butterfly valves and balance valves are provided, and butterfly valves are installed on the water supply branch; pressure gauges and thermometers are installed on the chilled water tank and chilled water collector, and plungers are connected to the lower parts of the chilled water tank and chilled water collector valve. 9. The novel vapor compression refrigeration system according to claim 1, characterized in that: balance valves are connected between the second outlet pipes and the second return pipes of different refrigeration units. 10. The novel vapor compression refrigeration system according to claim 1, characterized in that: the cooling tower is connected with a tap water replenishment pipe and a soft water replenishment pipe, and both the tap water replenishment pipe and the soft water replenishment pipe are provided with stop valves.