Cold supply system capable of improving cold energy utilization rate

Abstract

The utility model relates to the technical field of refrigeration and cooling, in particular to a cooling system capable of improving the utilization rate of cold energy, which comprises a refrigeration system for providing cold for a workshop, a workshop air-conditioning system, a dry coil system, a process cooling system and an office area air-conditioning system which are sequentially connected through a water supply main pipeline, the office area air-conditioning system is connected with the refrigerating system through a water return main pipeline; a water supply branch pipeline is arranged on the water supply main pipeline; the refrigerating system is connected with the dry coil system and the process cooling system through the water supply branch pipeline; valves are arranged between the systems on the water supply main pipeline and the water supply branch pipelines; and temperature sensors are arranged on the water supply main pipeline and the water supply branch pipelines close to the input ends or the output ends of the systems. According to the utility model, sorting is carried out according to different requirements of different areas of the workshop on the cooling capacity, step-by-step utilization of the cooling capacity provided by the refrigerating system is realized, the utilization rate of the cooling capacity is improved, the energy waste is reduced, and the cooling cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration and cooling, in particular to a cooling system capable of improving the utilization rate of cooling capacity. Background Art

[0002] Both the production area and office area in the factory workshop have cooling needs, such as the need to maintain ambient temperature and humidity, and the need to cool down process equipment. The existing cooling methods mostly use the chilled water generated by the refrigeration host to cool various areas of the workshop, cool down the equipment, and exchange heat for the coils through regional pressurization. Currently, there are zoned temperature cooling systems and common temperature water supply systems. Zoned temperature cooling requires adding a separate cooling system in each area, which greatly increases the cost investment. The common temperature water supply system has a mismatch in cooling load, resulting in energy waste.

[0003] In summary, there is an urgent need to provide a cooling system that improves the utilization rate of cooling capacity to solve the technical problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide a cooling system that improves the utilization rate of cooling capacity, so as to solve the technical problems existing in the prior art. The specific technical scheme is as follows:

[0005] A cooling system for improving the utilization rate of cooling capacity, comprising a refrigeration system for providing cooling for a workshop, a workshop air conditioning system, a dry coil system, a process cooling system and an office area air conditioning system, wherein the refrigeration system is sequentially connected to the workshop air conditioning system, the dry coil system, the process cooling system and the office area air conditioning system through a water supply main line, and the office area air conditioning system is connected to the refrigeration system through a return water main line;

[0006] The main water supply line is provided with a water supply pipeline, and the refrigeration system is connected to the dry coil system and the process cooling system through the water supply pipeline; valves are provided between the systems on the main water supply line and the water supply pipeline; temperature sensors are also provided on the main water supply line and the water supply pipeline near the input end or output end of each system.

[0007] Furthermore, a first valve is provided on the water supply main line at the input end of the workshop air conditioning system, and the first valve is connected to the first water return pipe line;

[0008] A second valve is provided on the water supply main line between the workshop air conditioning system and the dry coil system, and the second valve is connected to the second water return line;

[0009] A fifth valve is provided on the water supply main line between the dry coil system and the process cooling system, and the fifth valve is connected to the third water return line;

[0010] A sixth valve is provided on the water supply main line between the process cooling system and the office area air conditioning system, and the sixth valve is connected to the fourth water return line;

[0011] The output end of the office area air conditioning system is connected to the fifth water return pipeline, and the fifth water return pipeline is provided with a seventh valve;

[0012] The first water return pipeline, the second water return pipeline, the third water return pipeline, the fourth water return pipeline and the fifth water return pipeline are all connected to the water return main pipeline.

[0013] Furthermore, the water supply pipeline includes a first water supply pipeline, a second water supply pipeline and a third water supply pipeline; the input end of the first water supply pipeline is connected to the output end of the refrigeration system, and the output end of the first water supply pipeline is connected to the input end of the second water supply pipeline and the input end of the third water supply pipeline through a third valve; the output end of the second water supply pipeline is connected to the input end of the dry coil system; the third water supply pipeline is provided with a fourth valve, and the output end of the third water supply pipeline is connected to the input end of the process cooling system.

[0014] Furthermore, the valve is an electric proportional control valve.

[0015] Furthermore, manual valves are provided on the water supply main line and the water return branch line.

[0016] Furthermore, the refrigeration system includes a water cooling module and a cold storage module. The cold storage module supplies cold to the water cooling module through a heat exchanger. The water cooling module is provided with a circulating water pump.

[0017] Furthermore, it also includes a control system, which is connected to the valve, the circulating water pump and the temperature sensor.

[0018] The application of the technical solution of the utility model has the following beneficial effects:

[0019] The utility model provides a cooling system for improving the utilization rate of cold capacity, including a refrigeration system for providing cold for a workshop, a workshop air conditioning system, a dry coil system, a process cooling system and an office area air conditioning system, wherein the refrigeration system is connected to the workshop air conditioning system, the dry coil system, the process cooling system and the office area air conditioning system in sequence through a water supply main line, and the office area air conditioning system is connected to the refrigeration system through a return water main line; a water supply pipeline is provided on the water supply main line, and the refrigeration system is connected to the dry coil system and the process cooling system through the water supply pipeline; valves are provided between the systems on the water supply main line and the water supply pipeline; temperature sensors are also provided on the water supply main line and the water supply pipeline near the input end or output end of each system. In the utility model, the different demands for cold capacity of the workshop air conditioning system, the dry coil system, the process cooling system and the office area air conditioning system are sorted, so as to realize the step-by-step utilization of the cold capacity provided by the refrigeration system, improve the utilization rate of cold capacity, reduce energy waste, and reduce the cost of cooling.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 It is the overall structural block diagram of the cooling system in the utility model;

[0023] Among them, 1. Refrigeration system, 2. Workshop air-conditioning system, 3. Dry coil system, 4. Process cooling system, 5. Office area air-conditioning system, 6. Water supply main line, 6.1. Water supply pipeline, 6.1.1. First water supply pipeline, 6.1.2. Second water supply pipeline, 6.1.3. Third water supply pipeline, 7. Return water main line, 7.1. First return water pipeline, 7.2. Second return water pipeline, 7.3. Third return water pipeline, 7.4. Fourth return water pipeline, 7.5. Fifth return water pipeline, 8. Valve, 8.1. First valve, 8.2. Second valve, 8.3. Third valve, 8.4. Fourth valve, 8.5. Fifth valve, 8.6. Sixth valve, 8.7. Seventh valve, 9. Circulating water pump. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "front", "back", "lateral", "longitudinal", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] Example:

[0027] See also Figure 1 The present embodiment provides a cooling system for improving the utilization rate of cooling capacity, including a refrigeration system 1 for providing cooling for a workshop, a workshop air conditioning system 2, a dry coil system 3, a process cooling system 4 and an office area air conditioning system 5. Generally, the temperature of the office area air conditioning system 5 needs to be controlled at about 26°C, the temperature of the workshop air conditioning system 2 needs to be controlled at about 20-24°C and the humidity is synchronously controlled to be 40-50%, the temperature of the PCW process cooling system needs to be controlled at 22-24°C, and the outlet air temperature of the dry coil system 3 needs to be controlled at 12-17°C; to meet the above requirements, the office area air conditioning system The cold water temperature input to system 5 needs to be below 18°C, the cold water temperature input to the workshop air-conditioning system 2 needs to be below 7°C, the cold water temperature input to the PCW process cooling system needs to be below 15°C, and the cold water temperature of the dry coil system 3 needs to be below 12°C. In response to the requirements of each system for the cold water supply temperature, in this embodiment, the refrigeration system 1 is connected to the workshop air-conditioning system 2, the dry coil system 3, the process cooling system 4 and the office area air-conditioning system 5 in sequence through the water supply main line 6, and the office area air-conditioning system 5 is connected to the refrigeration system 1 through the return water main line 7 to realize the cooling cycle.

[0028] In this embodiment, in order to ensure the cooling capacity required by the dry coil system 3 and the process cooling system 4, a water supply pipeline 6.1 is further provided on the water supply main pipeline 6. The refrigeration system 1 is connected to the dry coil system 3 and the process cooling system 4 through the water supply pipeline 6.1. After fully utilizing the cooling capacity output by the workshop air-conditioning system 2, the cooling capacity required by the dry coil system 3 and the process cooling system 4 is ensured by directly connecting to the refrigeration system 1. Specifically, in this embodiment, the water supply pipeline 6.1 includes a first water supply pipeline 6.1.1, a second water supply pipeline 6.1.2 and a third water supply pipeline 6.1.3; the input end of the first water supply pipeline 6.1.1 is connected to the output end of the refrigeration system 1, and the output end of the first water supply pipeline 6.1.1 is connected to the input end of the second water supply pipeline 6.1.2 and the input end of the third water supply pipeline 6.1.3 through a third valve 8.3; the output end of the second water supply pipeline 6.1.2 is connected to the input end of the dry coil system 3; the third water supply pipeline 6.1.3 is provided with a fourth valve 8.4, and the output end of the third water supply pipeline 6.1.3 is connected to the input end of the process cooling system 4.

[0029] In this embodiment, valves 8 are provided between the systems on the water supply main line 6 and the water supply pipeline 6.1; temperature sensors are also provided on the water supply main line 6 and the water supply pipeline 6.1 near the input end or output end of each system.

[0030] In this embodiment, a control system is also included, and the control system is connected to the valve 8, the circulating water pump 9 and the temperature sensor.

[0031] See also Figure 1 A first valve 8.1 is provided on the water supply main line 6 at the input end of the workshop air-conditioning system 2, and the first valve 8.1 is connected to the first return water branch line 7.1; a second valve 8.2 is provided on the water supply main line 6 between the workshop air-conditioning system 2 and the dry coil system 3, and the second valve 8.2 is connected to the second return water branch line 7.2; a fifth valve 8.5 is provided on the water supply main line 6 between the dry coil system 3 and the process cooling system 4, and the fifth valve 8.5 is connected to the third return water branch line 7.3; a sixth valve 8.6 is provided on the water supply main line 6 between the process cooling system 4 and the office area air-conditioning system 5, and the sixth valve 8.6 is connected to the fourth return water branch line 7.4; the output end of the office area air-conditioning system 5 is connected to the fifth return water branch line 7.5, and the fifth return water branch line 7.5 is provided with a seventh valve 8.7; the valve 8 adopts an electric proportional control valve, and the valve opening can be controlled. By controlling the valve opening, the flow rate of water in the pipeline is adjusted, thereby realizing temperature regulation.

[0032] In this embodiment, the first water return pipeline 7.1, the second water return pipeline 7.2, the third water return pipeline 7.3, the fourth water return pipeline 7.4 and the fifth water return pipeline 7.5 are all connected to the water return main pipeline 7. Each system is connected to the water return main pipeline through each water return pipeline, and water is returned to the refrigeration system to realize the cooling cycle of each system.

[0033] Preferably, each water return pipe and the main water supply pipe 6 is provided with a manual valve, preferably a butterfly valve, to prevent the electric proportional control valve from malfunctioning and to facilitate maintenance.

[0034] In this embodiment, the refrigeration system 1 includes a water cooling module and a cold storage module. The cold storage module supplies cooling to the water cooling module through a heat exchanger, and the water cooling module supplies cooling to the entire cooling system. The water cooling module is provided with a circulating water pump 9; preferably, the water cooling module and the cold storage module can also provide cooling separately, in which case both the water cooling module and the cold storage module are provided with a circulating water pump 9.

[0035] In this embodiment, the workshop air-conditioning system 2 controls the opening of the first valve 8.1 and the second valve 8.2 through the control system, controls the water inlet temperature of the workshop air-conditioning system 2 to 7°C and the water outlet temperature to 10°C, and ensures that the temperature difference of the workshop air-conditioning system 2 is 3°C. When the temperature difference is greater than 3°C, the opening of the first valve 8.1 is increased. When the temperature difference is less than 3°C, the opening of the first valve 8.1 is reduced. The temperature difference is less than the traditional 5°C temperature difference. On the one hand, the heat can be taken away quickly, which is easy to stably control the workshop temperature. At the same time, the air-conditioning coil is easier to dehumidify, which is more conducive to the precise control of the workshop humidity.

[0036] In this embodiment, the control system controls the second valve 8.2 and / or the third valve 8.3 to adjust the inlet water temperature of the dry coil system 3, and the control system controls the fourth valve 8.4 and / or the fifth valve 8.5 to control the outlet water temperature of the dry coil system 3 below 15° C., thereby meeting the inlet water temperature requirement of the process cooling system 4.

[0037] In this embodiment, the process cooling system 4 includes a plate heat exchanger. The cold water output by the dry coil system 3 is lower than 15°C and enters the plate heat exchanger together with the cold water output by the third water supply pipeline 6.1.3. By controlling the opening of the fourth valve 8.4, the fifth valve 8.5, and the sixth valve 8.6, the water temperature of the process cooling system after heat exchange is ensured to be around 22°C, and the temperature of the cold water output by the process cooling system is below 18°C.

[0038] In this embodiment, the office area air conditioning system 5 adopts a fan coil system for cooling. After the cold water flows out of the process cooling system 4, it flows into the fan coil of the office area air conditioning system 5. By controlling the opening of the sixth valve 8.6 and the seventh valve 8.7, the required temperature of the office area air conditioning system is met below 26°C.

[0039] This embodiment provides a method for improving the utilization rate of cooling capacity. According to weather changes, when the temperature is low in winter, the demand for cooling capacity of the workshop air-conditioning system 2 is relatively reduced, and the cooling capacity output by the workshop air-conditioning system 2 can meet the needs of the dry coil system 3 and the process cooling system 4. At this time, the method of this embodiment includes the following steps:

[0040] Step 1.1, the refrigeration system 1 provides cold water of a specified temperature through a circulating water pump, and the control system controls the opening of the first valve 8.1 according to the temperature measured by the temperature sensor at the output end of the refrigeration system 1, and the cold water provided by the refrigeration system 1 is input into the workshop air conditioning system 2 through the water supply main line 6;

[0041] Step 1.2, the temperature sensor at the output end of the workshop air-conditioning system 2 detects the temperature of the cold water output from the output end of the workshop air-conditioning system 2, and the control system controls the opening of the second valve 8.2 according to the temperature of the cold water output from the output end of the workshop air-conditioning system 2, and the cold water output from the workshop air-conditioning system 2 is input into the dry coil system 3 through the water supply main line 6;

[0042] Step 1.3, the temperature sensor at the output end of the dry coil system 3 detects the temperature of the cold water output from the output end of the dry coil system 3, and the control system controls the opening of the fifth valve 8.5 according to the temperature of the cold water output from the output end of the dry coil system 3, and the cold water output from the dry coil system 3 is input into the process cooling system 4 through the water supply main line 6;

[0043] Step 1.4, the temperature sensor at the output end of the process cooling system 4 detects the temperature of the cold water output from the output end of the process cooling system 4, and the control system controls the opening of the sixth valve 8.6 according to the temperature of the cold water output from the output end of the process cooling system 4, and the cold water output from the process cooling system 4 is input into the office area air conditioning system 5 through the water supply main line 6;

[0044] Step 1.5, the cold water outputted from the office area air conditioning system 5 is inputted into the refrigeration system 1 via the fifth water return branch line 7.5 and the water return main line 7 to realize the cooling cycle.

[0045] When the temperature is high in summer, the demand for cooling capacity of the workshop air conditioning system 2 increases relatively. At this time, the cooling capacity output by the workshop air conditioning system 2 may not meet the needs of the dry coil system 3 and the process cooling system 4. At this time, the method of this embodiment includes the following steps:

[0046] Step 2.1, the refrigeration system 1 provides cold water of a specified temperature, and the control system controls the opening of the first valve 8.1 according to the temperature measured by the temperature sensor at the output end of the refrigeration system 1, and the cold water provided by the refrigeration system 1 is input into the workshop air conditioning system 2 through the water supply main line 6;

[0047] Step 2.2, the control system controls the second valve 8.2 to be fully opened, the temperature sensor at the input end of the dry coil system 3 detects the inlet water temperature at the input end, the control system controls the opening of the third valve 8.3 according to the inlet water temperature, the cold water output by the workshop air conditioning system 2 is input into the dry coil system 3 via the water supply main line 6, and at the same time, the cold water output by the refrigeration system 1 is input into the dry coil system 3 via the water supply main line 6, the first water supply branch line 6.1.1, the second water supply branch line 6.1.2 and the water supply main line 6 in sequence;

[0048] Step 2.3, the temperature sensor at the input end of the process cooling system 4 detects the temperature of the cold water input at the input end of the process cooling system 4, and the control system controls the opening of the fourth valve 8.4 and the fifth valve 8.5 according to the temperature of the cold water input at the input end of the process cooling system 4, and the cold water output by the dry coil system 3 is input into the process cooling system 4 through the water supply main line 6, and at the same time, the cold water output by the refrigeration system 1 is input into the process cooling system 4 through the water supply main line 6, the first water supply branch line 6.1.1, the third water supply branch line 6.1.3 and the water supply main line 6 in sequence;

[0049] Step 2.4, the temperature sensor at the output end of the process cooling system 4 detects the temperature of the cold water output from the output end of the process cooling system 4, and the control system controls the opening of the sixth valve 8.6 according to the temperature of the cold water output from the output end of the process cooling system 4, and the cold water output from the process cooling system 4 is input into the office area air conditioning system 5 through the water supply main line 6;

[0050] Step 2.5, the cold water output from the office area air conditioning system 5 is input into the refrigeration system 1 through the fifth water return branch line 7.5 and the water return main line 7 to realize the cooling cycle.

[0051] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cooling system for improving cooling capacity utilization, characterized in that: It comprises a refrigeration system (1) for providing cold for a workshop, a workshop air conditioning system (2), a dry coil system (3), a process cooling system (4) and an office area air conditioning system (5), wherein the refrigeration system (1) is connected to the workshop air conditioning system (2), the dry coil system (3), the process cooling system (4) and the office area air conditioning system (5) in sequence through a water supply main line (6), and the office area air conditioning system (5) is connected to the refrigeration system (1) through a return water main line (7); The main water supply line (6) is provided with a water supply pipeline (6.1), and the refrigeration system (1) is connected to the dry coil system (3) and the process cooling system (4) via the water supply pipeline (6.1); valves (8) are provided between the systems on the main water supply line (6) and the water supply pipeline (6.1); and temperature sensors are also provided on the main water supply line (6) and the water supply pipeline (6.1) near the input end or output end of each system.

2. The refrigeration system for improving the utilization rate of cooling capacity according to claim 1, characterized in that: A first valve (8.1) is provided on the water supply main line (6) at the input end of the workshop air conditioning system (2), and the first valve (8.1) is connected to the first water return branch line (7.1); A second valve (8.2) is provided on the water supply main line (6) between the workshop air conditioning system (2) and the dry coil system (3), and the second valve (8.2) is connected to the second water return branch line (7.2); A fifth valve (8.5) is provided on the water supply main line (6) between the dry coil system (3) and the process cooling system (4), and the fifth valve (8.5) is connected to the third water return branch line (7.3); A sixth valve (8.6) is provided on the water supply main line (6) between the process cooling system (4) and the office area air conditioning system (5), and the sixth valve (8.6) is connected to the fourth water return branch line (7.4); The output end of the office area air conditioning system (5) is connected to the fifth water return pipeline (7.5), and the fifth water return pipeline (7.5) is provided with a seventh valve (8.7); The first water return pipeline (7.1), the second water return pipeline (7.2), the third water return pipeline (7.3), the fourth water return pipeline (7.4) and the fifth water return pipeline (7.5) are all connected to the main water return pipeline (7).

3. The refrigeration system for improving the utilization rate of cooling capacity according to claim 2, characterized in that: The water supply pipeline (6.1) comprises a first water supply pipeline (6.1.1), a second water supply pipeline (6.1.2) and a third water supply pipeline (6.1.3); the input end of the first water supply pipeline (6.1.1) is connected to the output end of the refrigeration system (1), and the output end of the first water supply pipeline (6.1.1) is connected to the input end of the second water supply pipeline (6.1.2) and the input end of the third water supply pipeline (6.1.3) through a third valve (8.3); the output end of the second water supply pipeline (6.1.2) is connected to the input end of the dry coil system (3); the third water supply pipeline (6.1.3) is provided with a fourth valve (8.4), and the output end of the third water supply pipeline (6.1.3) is connected to the input end of the process cooling system (4).

4. The refrigeration system for improving the utilization rate of cooling capacity according to claim 3, characterized in that: The valve (8) is an electric proportional control valve.

5. The refrigeration system for improving the utilization rate of cooling capacity according to claim 4, characterized in that: The water supply main line (6) and the water return branch line are also provided with manual valves.

6. The refrigeration system for improving the utilization rate of cooling capacity according to any one of claims 1 to 5, characterized in that: The refrigeration system (1) comprises a water cooling module and a cold storage module, the cold storage module supplies cold to the water cooling module via a heat exchanger, and the water cooling module is provided with a circulating water pump (9).

7. The refrigeration system for improving the utilization rate of cooling capacity according to claim 6, characterized in that: It also comprises a control system, which is connected to the valve (8), the circulating water pump (9) and the temperature sensor.

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