Dry-wet combined cooling tower water supply device
By introducing a bypass pipe into the dry-wet combined cooling tower system, the problem of freezing damage caused by the low medium flow rate in dry cooling towers during winter was solved, and a stable cooling effect was achieved in low-temperature environments.
Patent Information
- Application Number
- CN202422880214.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-26
AI Technical Summary
When the ambient temperature is low in winter, the medium flow rate of the dry cooling tower is too low, which can lead to sector freezing damage in the dry cooling tower.
A bypass pipe is installed between the dry cooling tower and the wet cooling tower. When the ambient temperature is low in winter, the bypass valve is opened and the inlet and outlet water valves of the dry cooling tower are closed, so that the high-temperature medium can directly enter the wet cooling tower through the bypass pipe for cooling, forming a circulating cooling flow.
This effectively avoids the freezing damage problem of dry cooling towers caused by insufficient medium flow rate in winter, ensuring the normal operation of the cooling system.
Smart Images
Figure CN223726888U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dry and wet combined cooling tower technical field, specifically is a dry and wet combined cooling tower water supply device. BACKGROUND
[0002] Dry and wet combined cooling tower is a kind of high-efficiency energy-saving cooling system combined with dry air cooling and wet cooling features.This system usually contains shell, frame, finned air cooler, light tube heat exchange coil, cooling filler, fan, water pump and control system and other components.Dry and wet combined cooling tower is designed to improve cooling efficiency while reducing water consumption, and is suitable for water resource relatively nervous area or the industrial application scene with higher requirement to cooling efficiency;The water supply device of dry and wet combined cooling tower is mainly responsible for the supply and distribution of circulating cooling water.In dry cooling stage, high-temperature medium is cooled by finned tube, and convective heat transfer is carried out with high-speed flowing air, and heat is taken away.If cooling water is not cooled enough to meet process requirements, then enter wet cooling stage, at this time, cooling water is sprayed on light tube heat exchange coil by spraying system, and water evaporation heat absorption effect is utilized to further reduce water temperature.
[0003] Dry and wet combined cooling tower water supply pipeline needs to pass through dry cooling tower, then pass through wet cooling tower or bypass, to form a loop, however, during winter water injection period, it is easy to cause sector freeze damage of dry cooling tower due to too small medium flow rate.
[0004] To solve the above problems, a dry and wet combined cooling tower water supply device is proposed to solve the above problems. INVENTION CONTENTS
[0005] To solve the problems in the background art, the utility model provides a dry and wet combined cooling tower water supply device.
[0006] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0007] A dry and wet combined cooling tower water supply device, comprising a dry cooling tower, a wet cooling tower and a cooling device, a water inlet pipeline is connected between the dry cooling tower and the wet cooling tower, a water outlet end of the wet cooling tower is connected with a mother return pipeline, a tail end of the mother return pipeline is connected with the cooling device, an outlet end of the cooling device is connected with a child return pipeline, the child return pipeline is connected with an inlet end of the dry cooling tower, a bypass pipeline is connected between the child return pipeline and the water inlet pipeline;
[0008] A bypass valve is arranged in the middle part of the bypass pipeline, a water inlet valve is arranged in the tail end of the child return pipeline, and a water outlet valve is arranged in the head end of the water inlet pipeline.
[0009] Preferably, a cooling coil is arranged in the tail end of the water inlet pipeline, and the cooling coil is located in the middle part of the inner cavity of the wet cooling tower.
[0010] Preferably, the bottom of the wet cooling tower is provided with a cooling pipe, the middle of the cooling pipe is provided with a cooling water pump, and the end of the cooling pipe is provided with a plurality of groups of cooling water nozzles located in the middle of the upper end of the cooling coil.
[0011] Preferably, the inner top of the wet cooling tower is provided with a cooling fan.
[0012] Preferably, the middle of the mother return pipe is provided with a circulating water pump.
[0013] Preferably, the outer side of the dry cooling tower is provided with a water supplement pipe.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] In the scheme, by adding a bypass pipe between the sub-return pipe and the water inlet pipe, when the winter ambient temperature is low, the bypass valve is opened, and the water inlet valve and the water outlet valve of the dry cooling tower are closed, at this time, the high-temperature medium flows into the wet cooling tower through the sub-return pipe, the bypass pipe and the water inlet pipe for cooling, and then is transported through the circulating water pump and the mother return pipe to form a circulating cooling, thereby effectively solving the problem that during the winter water injection, when passing through the dry cooling tower, the dry cooling tower is damaged due to the too small medium flow rate. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The structure of the utility model is shown in the figure.
[0017] In the figure: 1, dry cooling tower; 11, water inlet valve; 12, water outlet valve; 13, water supplement pipe; 2, wet cooling tower; 21, cooling fan; 22, cooling pipe; 23, cooling water pump; 24, cooling water nozzle; 3, cooling equipment; 4, mother return pipe; 5, circulating water pump; 6, sub-return pipe; 7, water inlet pipe; 8, cooling coil; 9, bypass pipe; 91, bypass valve. DETAILED DESCRIPTION
[0018] The technical scheme in the embodiment of the application is to solve the problems in the background art, and the general idea is as follows:
[0019] Embodiment: refer to Figure 1As shown, the water supply device of the combined dry and wet cooling tower of the embodiment comprises a dry cooling tower 1, a wet cooling tower 2 and a cooling device 3, a water inlet pipeline 7 is connected between the dry cooling tower 1 and the wet cooling tower 2, a water outlet end of the wet cooling tower 2 is connected with a mother return pipeline 4, a tail end of the mother return pipeline 4 is connected with the cooling device 3, an outlet end of the cooling device 3 is connected with a son return pipeline 6, the son return pipeline 6 is connected with an inlet end of the dry cooling tower 1, and a bypass pipeline 9 is connected between the son return pipeline 6 and the water inlet pipeline 7; a bypass valve 91 is arranged in the middle of the bypass pipeline 9, a water inlet valve 11 is arranged at a tail end of the son return pipeline 6, and a water outlet valve 12 is arranged at a head end of the water inlet pipeline 7.
[0020] The high-temperature medium flows into the dry cooling tower 1 through the son return pipeline 6, is cooled, then flows into the wet cooling tower 2 through the water inlet pipeline 7, is further cooled, finally flows into the cooling device 3 through the mother return pipeline 4, and is cooled, thereby forming a loop; or the high-temperature medium flows through the son return pipeline 6, then sequentially flows through the bypass pipeline 9, the water inlet pipeline 7, the wet cooling tower 2 and the mother return pipeline 4, thereby forming a circulating loop, so that the high-temperature medium is circularly cooled.
[0021] A cooling coil 8 is arranged at a tail end of the water inlet pipeline 7, and the cooling coil 8 is located in the middle of the inner cavity of the wet cooling tower 2; a cooling pipe 22 is arranged at the bottom of the wet cooling tower 2, a cooling water pump 23 is arranged at the middle of the cooling pipe 22, a plurality of cooling water spray heads 24 are arranged at the tail end of the cooling pipe 22, and the plurality of cooling water spray heads 24 are located at the middle of the upper end of the cooling coil 8; the cooling water pump 23 can extract the cooling liquid in the wet cooling tower 2, then deliver the cooling liquid to the plurality of cooling water spray heads 24 through the cooling pipe 22, and spray the cooling liquid, so that the high-temperature medium flowing in the cooling coil 8 is sprayed and cooled, and the cooling effect is further improved.
[0022] In some examples, a cooling fan 21 is arranged at the inner top of the wet cooling tower 2.
[0023] In some examples, a circulating water pump 5 is arranged at the middle of the mother return pipeline 4.
[0024] In some examples, a water supplement pipeline 13 is arranged at the outer side of the dry cooling tower 1.
[0025] The working principle of the utility model is as follows:
[0026] When the ambient temperature is high, the bypass valve 91 is closed, the high-temperature medium enters the dry cooling tower 1 from the son return pipeline 6, is cooled, then flows into the wet cooling tower 2 through the water inlet pipeline 7, is further cooled, finally enters the cooling device 3 through the mother return pipeline 4, and flows into the son return pipeline 6, thereby forming a circulation;
[0027] When the ambient temperature is low in winter, the bypass valve 91 is opened, and the water inlet valve 11 and the water outlet valve 12 of the dry cooling tower 1 are closed, at this time, the high-temperature medium is cooled in the wet cooling tower 2 through the sub-return pipeline 6, the bypass pipeline 9 and the water inlet pipeline 7, and then is transported through the circulating water pump 5 and the mother-return pipeline 4, thereby forming a circulating cooling flow, and effectively solving the problem that the dry cooling tower 1 is frozen in a sector due to too small medium flow rate when passing through the dry cooling tower 1 during water injection in winter.
[0028] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and all the changes and improvements fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A water supply device for a hybrid cooling tower, characterized by comprising: Including dry cooling tower (1), wet cooling tower (2) and cooling equipment (3), the dry cooling tower (1) and wet cooling tower (2) are connected with water inlet pipeline (7), the outlet of wet cooling tower (2) is connected with mother return pipeline (4), the end of mother return pipeline (4) is connected with cooling equipment (3), the outlet of cooling equipment (3) is connected with sub return pipeline (6), the sub return pipeline (6) is connected with the inlet of dry cooling tower (1), the bypass pipeline (9) is connected between sub return pipeline (6) and water inlet pipeline (7); The middle part of bypass pipeline (9) is provided with bypass valve (91), the end of sub return pipeline (6) is provided with water inlet valve (11), the head of water inlet pipeline (7) is provided with water outlet valve (12).
2. The water supply device for a hybrid wet-dry cooling tower according to claim 1, wherein The end of water inlet pipeline (7) is provided with cooling coil (8), and the cooling coil (8) is located in the middle part of the inner cavity of wet cooling tower (2).
3. A combined dry and wet cooling tower water supply device according to claim 2, characterized in that The bottom of wet cooling tower (2) is provided with cooling pipe (22), the middle part of cooling pipe (22) is provided with cooling water pump (23), and the end of cooling pipe (22) is provided with a plurality of cooling water spray heads (24), and the plurality of cooling water spray heads (24) are located in the middle part of the upper end of cooling coil (8).
4. The combined wet and dry cooling tower water supply device according to claim 3, characterized in that, The inner side top of wet cooling tower (2) is provided with cooling fan (21).
5. A combined dry and wet cooling tower water supply device according to claim 4, characterized in that The middle part of mother return pipeline (4) is provided with circulating water pump (5).
6. The combined wet and dry cooling tower water supply apparatus according to claim 1, wherein The outer side of dry cooling tower (1) is provided with water supplement pipeline (13).