A cooling water recycling system

Abstract

The utility model discloses a cooling water recovery and reuse system, comprising a sealed water tank, on which a steam condensate input pipe and a steam condensate output pipe are connected, the steam condensate output pipe is connected to a first sealed water pump, the output end of the first sealed water pump is connected to a mechanical sealed water cooling part of a moving device through a pumping water pipe, the output end of the mechanical sealed water cooling part of the moving device is connected to a first heat exchanger through a water guide pipe, and the output end of the first heat exchanger is connected to the sealed water tank through a return pipe; the beneficial effects of the utility model are as follows: by recovering the steam condensate into the sealed water tank for temporary storage, and transporting it to a number of moving devices for water cooling treatment through the first sealed water pump, the steam condensate is recovered and reused, the waste of water resources is avoided, and the production and operation cost investment of the enterprise is reduced.

Description

Technical field:

[0001] The utility model belongs to the field of chemical production, and in particular relates to a cooling water recovery and reuse system. Background technology:

[0002] A lot of mechanical equipment is used in the field of chemical production. A large amount of heat will be generated during the continuous operation of some mechanical equipment. In order to ensure the continuous and normal operation of the equipment, water cooling is used to dissipate heat.

[0003] Taking the cooling water of pump and seal of chemical raw material BDO concentration and refining tank area, cooling water of hydrogen compressor packing, and cooling water of hydrogen compressor cylinder as an example, the steam condensate after cooling of medium-pressure steam condensate and low-pressure steam condensate in BDO workshop is sent out from the steam condensate tank by steam condensate pump and sent to various equipment for cooling (machine seal, packing, cylinder). In the actual water cooling process, the cooling water of various mechanical equipment is generally discharged directly on site into the ditch, and finally enters the underground sewage pipe network, which leads to a large amount of steam condensate and machine seal water being wasted, increasing the production and operation cost investment of the enterprise, and also increasing the amount of sewage treatment of public works. Utility model content:

[0004] The purpose of the utility model is to provide a cooling water recovery and reuse system, and overcome the deficiencies of the above-mentioned prior art, which effectively solves the existing problem of cooling water waste.

[0005] The content of the utility model: A cooling water recovery and reuse system includes a sealed water tank, on which a steam condensate input pipe and a steam condensate output pipe are connected, the steam condensate output pipe is connected to a first sealed water pump, the output end of the first sealed water pump is connected to a mechanical sealed water-cooled component of a moving device through a pumping water pipe, the output end of the mechanical sealed water-cooled component of the moving device is connected to a first heat exchanger through a water pipe, and the output end of the first heat exchanger is connected to the sealed water tank through a return water pipe.

[0006] Furthermore, a first branch pipe is connected to the steam condensate output pipe, the first branch pipe is connected to a second sealed water pump, and an output end of the second sealed water pump is connected to the pumping water pipe.

[0007] Furthermore, a second branch pipe is connected to the water conduit, an output end of the second branch pipe is connected to a second heat exchanger, and an output end of the second heat exchanger is connected to the return water pipe.

[0008] Furthermore, a nitrogen sealing device is provided on the sealed water tank, and a nitrogen pipe is connected to the nitrogen sealing device.

[0009] Furthermore, a pressure regulating valve is installed on the pumping water pipe, and check valves are installed on the output pipes of the first sealed water pump and the second sealed water pump.

[0010] The beneficial effects of the utility model are as follows: by recovering the steam condensate into a sealed water tank for temporary storage and conveying it to a number of moving equipment for water cooling through a first sealed water pump, the steam condensate can be recycled and reused, the waste of water resources is avoided, and the production and operation cost investment of the enterprise is reduced. Description of the drawings:

[0011] Figure 1 It is a schematic diagram of the overall system of the utility model;

[0012] In the figure, 1 is a sealed water tank, 2 is a steam condensate input pipe, 3 is a steam condensate output pipe, 4 is a first sealed water pump, 5 is a moving device, 6 is a pumping water pipe, 7 is a first heat exchanger, 8 is a water guide pipe, 9 is a return water pipe, 10 is a first branch pipe, 11 is a second sealed water pump, 13 is a second branch pipe, 14 is a second heat exchanger, 15 is a nitrogen pipe, 16 is a pressure regulating valve, 17 is a check valve, and 18 is a circulating water pipe. Specific implementation method:

[0013] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention is now described with reference to the accompanying drawings:

[0014] like Figure 1 As shown, a cooling water recovery and reuse system includes a sealed water tank 1, on which a steam condensate input pipe 2 and a steam condensate output pipe 3 are connected, the steam condensate output pipe 3 is connected to a first sealed water pump 4, the output end of the first sealed water pump 4 is connected to the mechanical sealed water cooling part of the moving equipment 5 through a pumping water pipe 6, the output end of the mechanical sealed water cooling part of the moving equipment 5 is connected to the first heat exchanger 7 through a water pipe 8, and the output end of the first heat exchanger 7 is connected to the sealed water tank 1 through a return water pipe 9.

[0015] Specifically, the steam condensate is recovered and temporarily stored in the sealed water tank 1, and then transported to the moving equipment 5 through the first sealed water pump 4 for water cooling, thereby achieving the recycling of the steam condensate.

[0016] In actual use, the steam condensate generated in the BDO workshop is transported to the sealed water tank 1 through the steam condensate input pipe 2 for temporary storage. At this time, the steam condensate output pipe 3 transports the steam condensate to the first sealed water pump 4. After the first sealed water pump 4 is pressurized, the steam condensate is respectively sent to the mechanical sealed water cooling parts of several moving equipment 5 for water cooling treatment of the equipment. After the steam condensate is heat exchanged, it is transported to the first heat exchanger 7 through the water guide pipe 8 for secondary heat exchange treatment, so that the temperature of the steam condensate is reduced. The circulating water pipe 18 provides a cold source for the first heat exchanger 7. The steam condensate cooled in the first heat exchanger 7 flows back to the sealed water tank 1 through the return pipe 9.

[0017] like Figure 1 As shown, a cooling water recovery and reuse system is characterized in that: a first branch pipe 10 is connected to the steam condensate output pipe 3, the first branch pipe 10 is connected to the second sealed water pump 11, the output end of the second sealed water pump 11 is connected to the pumping water pipe 6, a second branch pipe 13 is connected to the water guide pipe 8, the output end of the second branch pipe 13 is connected to the second heat exchanger 14, the output end of the second heat exchanger 14 is connected to the return water pipe 9, a nitrogen sealing device is provided on the sealed water tank 1, a nitrogen pipe 15 is connected to the nitrogen sealing device, a pressure regulating valve 16 is installed on the pumping water pipe 6, and a check valve 17 is installed on the output pipes of the first sealed water pump 4 and the second sealed water pump 11.

[0018] Specifically, through the second sealed water pump 11 and the second heat exchanger 14, when a device failure occurs, the steam condensate can be normally transported to the moving device 5 for cooling.

[0019] In actual use, when the first sealed water pump 4 fails to be repaired, the corresponding valve is closed, and the corresponding valve of the standby second sealed water pump 11 is opened. At this time, the steam condensate in the steam condensate output pipe 3 is transported to the second sealed water pump 11, and the water pipe 8 continuously transports the steam condensate to the mechanical sealed water cooling parts of the plurality of moving equipment 5 for water cooling;

[0020] When the first heat exchanger 7 fails and is under maintenance, the corresponding valve is closed, and the corresponding valve of the standby second heat exchanger 14 is opened. At this time, the steam condensate in the moving device 5 enters the second heat exchanger 14 through the second branch pipe 13, and the circulating water pipe 18 stops supplying water to the first heat exchanger 7 and switches to supplying water to the second heat exchanger 14. The steam condensate after heat exchange and cooling in the second heat exchanger 14 flows back to the sealed water tank 1 through the return pipe 9;

[0021] A nitrogen sealing device is provided on the sealed water tank 1 to ensure safe use of the sealed water tank 1 , and nitrogen is supplemented to the nitrogen sealing device through a nitrogen pipe 15 .

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling water recycling system, characterized in that: The invention comprises a sealed water tank (1), a steam condensate input pipe (2) and a steam condensate output pipe (3) being connected to the sealed water tank (1), the steam condensate output pipe (3) being connected to a first sealed water pump (4), the output end of the first sealed water pump (4) being connected to a mechanical sealed water cooling component of a moving device (5) via a pumping water pipe (6), the output end of the mechanical sealed water cooling component of the moving device (5) being connected to a first heat exchanger (7) via a water conduit (8), and the output end of the first heat exchanger (7) being connected to the sealed water tank (1) via a return water pipe (9).

2. A cooling water recycling system according to claim 1, characterized in that: The steam condensate output pipe (3) is connected to a first branch pipe (10), the first branch pipe (10) is connected to a second sealed water pump (11), and the output end of the second sealed water pump (11) is connected to the pumping water pipe (6).

3. A cooling water recycling system according to claim 1, characterized in that: The water conduit (8) is connected to a second branch pipe (13), the output end of the second branch pipe (13) is connected to a second heat exchanger (14), and the output end of the second heat exchanger (14) is connected to the return water pipe (9).

4. A cooling water recycling system according to claim 1, characterized in that: A nitrogen sealing device is provided on the sealed water tank (1), and a nitrogen pipe (15) is connected to the nitrogen sealing device.

5. A cooling water recycling system according to claim 2, characterized in that: A pressure regulating valve (16) is installed on the pumping water pipe (6), and check valves (17) are installed on the output pipes of the first sealed water pump (4) and the second sealed water pump (11).

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