Dual cold source vacuum system

Abstract

The application discloses a double-cold-source vacuum system, wherein the cooling water inlets and outlets of three groups of parallel vacuum pumps are individually communicated with a water tank through independent pipelines, and when two or three groups of vacuum pumps are simultaneously operated, the uneven distribution of cooling water is avoided, and the cooling effect is ensured, so that the problem that when three groups of vacuum pumps adopt single-pipe delivery of cooling water, uneven distribution of cooling water is prone to occur when two or three groups of vacuum pumps are simultaneously operated, and the cooling effect is greatly reduced due to mutual interference is solved.

Description

Technical Field

[0001] This utility model relates to a dual-cold-source vacuum system, and belongs to the field of vacuum system technology in pharmaceutical workshops. Background Technology

[0002] In the vacuum system of the pharmaceutical raw material workshop, cooling water is required to ensure the normal operating temperature of the vacuum pump.

[0003] The prior art is described in Chinese Patent Publication No. CN222759944U. The three sets of vacuum pumps that maintain the vacuum level in the vacuum tank use a single pipe to deliver cooling water. When two or three sets of vacuum pumps are running at the same time, uneven distribution of cooling water is likely to occur, and mutual interference will lead to a significant decrease in the cooling effect. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a dual-cold-source vacuum system.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a dual-cold-source vacuum system, comprising:

[0007] A dual-cooling-source vacuum system is implemented, which provides cooling water and return water to three sets of parallel vacuum pumps independently.

[0008] The dual-cold-source vacuum system includes a water tank connected to a plate heat exchanger via a pipe. The water tank is connected to a vacuum tank via three sets of parallel vacuum pumps. The cooling water inlets of the three sets of vacuum pumps are each connected to the water tank via an independent pipe, and the cooling water return ports of the three sets of vacuum pumps are each connected to the water tank via an independent pipe. The vacuum ports of the three sets of parallel vacuum pumps are connected to the vacuum tank via a single pipe.

[0009] The pipe connecting the plate heat exchanger to the water tank is equipped with a circulating pump for circulating the water.

[0010] The water tank is also connected to a drinking water pipe, which is equipped with a valve for control.

[0011] The plate heat exchanger inlet pipe is connected in parallel to an air conditioning chilled water supply pipe and a process chilled water supply pipe, and both the air conditioning chilled water supply pipe and the process chilled water supply pipe are equipped with control valves.

[0012] The plate heat exchanger return water pipe is connected in parallel to an air conditioning chilled water return water pipe and a process chilled water return water pipe, and both the air conditioning chilled water return water pipe and the process chilled water return water pipe are equipped with control valves.

[0013] The vacuum tank is connected to a vacuum delivery pipe, and a control valve is installed on the vacuum delivery pipe.

[0014] The beneficial effects of this utility model are as follows: Since the cooling water inlet and cooling water return of the three sets of parallel vacuum pumps are all connected to the water tank through independent pipes, the uneven distribution of cooling water is avoided when two or three sets of vacuum pumps are running at the same time, thus ensuring the cooling effect. This solves the problem that when three sets of vacuum pumps use a single pipe to transport cooling water, uneven distribution of cooling water and mutual interference can easily occur when two or three sets of vacuum pumps are running at the same time, leading to a significant decrease in the cooling effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the system layout of this utility model;

[0016] In the diagram: 1-Water tank; 2-Plate heat exchanger; 21-Circulating pump; 22-Drinking water pipe; 31-Air conditioning chilled water supply pipe; 32-Process chilled water supply pipe; 33-Air conditioning chilled water return pipe; 34-Process chilled water return pipe; 4-Vacuum pump; 5-Vacuum tank; 51-Vacuum delivery pipe. Detailed Implementation

[0017] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0018] like Figure 1 As shown.

[0019] This application discloses a dual-cold-source vacuum system, comprising:

[0020] A water tank 1 is used to store cold water, and a plate heat exchanger 2 is connected to the water tank 1 via a pipe; a circulation pump 21 is installed on the pipe between the plate heat exchanger 2 and the water tank 1 to circulate the water.

[0021] The water tank 1 is also connected to a drinking water pipe 22, which supplies drinking water and is equipped with a valve for control.

[0022] The plate heat exchanger 2 has its inlet pipe connected in parallel to an air conditioning chilled water supply pipe 31 and a process chilled water supply pipe 32. Both the air conditioning chilled water supply pipe 31 and the process chilled water supply pipe 32 are equipped with control valves. The plate heat exchanger 2 also has its return pipe connected in parallel to an air conditioning chilled water return pipe 33 and a process chilled water return pipe 34. Both the air conditioning chilled water return pipe 33 and the process chilled water return pipe 34 are equipped with control valves. The air conditioning chilled water supply pipe 31 supplies air conditioning chilled water, reducing the operating time of the process chiller unit and extending its service life by at least 15%. The simultaneous supply of process chilled water and air conditioning chilled water to the water tank 1 provides a dual cooling source for the three vacuum pumps 4.

[0023] The air conditioning chiller unit is supplied with chilled water through the air conditioning chilled water supply pipe 31. To meet the workshop's environmental requirements, the air conditioning chiller unit typically operates 24 hours a day. When switching to air conditioning chilled water as the cooling source, the process chiller unit can be shut down routinely. The process chiller unit serves as a backup. The process chiller unit needs to operate continuously during vacuum system operation. Data from 2023-2024 shows that the process chiller unit's average hourly energy consumption is approximately 16.8 kWh; the supporting water pumps (4kW and 7.5kW, operating at 40Hz) consume a total of approximately 26 kWh per hour. Shutting down the process chiller unit routinely saves approximately 33,696 yuan in electricity costs annually.

[0024] The water tank 1 is connected to the vacuum tank 5 through three sets of parallel vacuum pumps 4. The cooling water inlets of the three sets of vacuum pumps 4 are each connected to the water tank 1 through an independent pipe, and the cooling water return ports of the three sets of vacuum pumps 4 are each connected to the water tank 1 through an independent pipe. The vacuum ports of the three sets of parallel vacuum pumps 4 are connected to the vacuum tank 5 through a single pipe.

[0025] Since the cooling water inlet and return port of the three sets of parallel vacuum pumps 4 are each connected to the water tank 1 through independent pipes, the uneven distribution of cooling water is avoided when two or three sets of vacuum pumps 4 are running at the same time, thus ensuring the cooling effect. This solves the problem that when three sets of vacuum pumps use a single pipe to deliver cooling water, uneven distribution of cooling water and mutual interference can easily occur when two or three sets of vacuum pumps are running at the same time, leading to a significant decrease in cooling effect.

[0026] The vacuum tank 5 is connected to a vacuum delivery pipe 51, and a control valve is installed on the vacuum delivery pipe 51. The vacuum delivery pipe 51 is used to connect to equipment or environments that require a vacuum.

Claims

1. A dual-cold-source vacuum system, characterized in that, include: A dual-cold-source vacuum system is implemented to provide cooling water and return water separately to three sets of parallel vacuum pumps (4); The dual-cold-source vacuum system includes a water tank (1) connected to a plate heat exchanger (2) via a pipe. The water tank (1) is connected to a vacuum tank (5) via three sets of parallel vacuum pumps (4). The cooling water inlets of the three sets of vacuum pumps (4) are each connected to the water tank (1) via independent pipes. The cooling water return ports of the three sets of vacuum pumps (4) are each connected to the water tank (1) via independent pipes. The vacuum ports of the three sets of parallel vacuum pumps (4) are connected to the vacuum tank (5) via a single pipe.

2. The dual-cold-source vacuum system as described in claim 1, characterized in that: The plate heat exchanger (2) is connected to the water tank (1) by a circulating pump (21) for circulating water.

3. The dual-cold-source vacuum system as described in claim 1, characterized in that: The water tank (1) is also connected to a drinking water pipe (22) for supplying drinking water, and a valve is provided on the drinking water pipe (22).

4. The dual-cold-source vacuum system as described in claim 1, characterized in that: The plate heat exchanger (2) has an air conditioning chilled water supply pipe (31) and a process chilled water supply pipe (32) connected in parallel to its inlet pipe. Both the air conditioning chilled water supply pipe (31) and the process chilled water supply pipe (32) are equipped with control valves. The plate heat exchanger (2) has a return water pipe connected in parallel to an air conditioning chilled water return pipe (33) and a process chilled water return pipe (34). Both the air conditioning chilled water return pipe (33) and the process chilled water return pipe (34) are equipped with control valves.

5. The dual-cold-source vacuum system as described in claim 1, characterized in that: The vacuum tank (5) is connected to a vacuum delivery pipe (51), and a control valve is installed on the vacuum delivery pipe (51).

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