Water supplementing system of cooling tower

Abstract

The utility model discloses a cooling tower water replenishing system which comprises a cooling tower, a condensate pipe, a first water replenishing pump, a clear water tank and a recycling pipe, and the two ends of the recycling pipe are connected to the bottom of the condensate pipe and the cooling tower respectively and communicated with the condensate pipe and a water collecting disc of the cooling tower. And an inlet and an outlet of the first make-up pump are respectively connected to the clear water tank and the cooling tower and are communicated with the clear water tank and a water collecting tray of the cooling tower. According to the water replenishing system of the cooling tower, the originally discarded condensate water can be used as one of water replenishing sources of the cooling tower, so that the use amount of tap water is reduced, a large amount of water resources are saved, and the electric energy for lifting and discharging the condensate water and the electric energy for lifting and supplying the tap water are saved; and in summer, the temperature of condensate water reaching the water collecting tray is slightly lower than the water replenishing temperature of tap water, so that adverse effects on the efficiency of the refrigerating unit are avoided.

Description

Technical Field

[0001] The utility model relates to a cooling tower water replenishment system. Background Art

[0002] In order to ensure the cooling comfort and stability of the air conditioning system in summer, high-rise offices and hotels often use cooling towers and refrigeration units to provide cold sources for the air conditioning system. During the operation of the cooling tower system, a large amount of water will evaporate and drift, which requires water replenishment. At the same time, the refrigeration process of the refrigeration air conditioning system in summer will produce a large amount of condensed water.

[0003] For the cooling tower system of high-rise office and hotel projects, the cooling tower is generally installed on the roof of the podium, and the cooling tower water used is supplied by pressurized tap water, that is, the water tank in the basement fire pump room or life pump room is pressurized to supply water to the cooling tower, and the water supply source is municipal tap water. The air conditioning condensate is discharged in an organized manner through pipes, that is, the condensate is collected and merged through the riser and finally discharged to the basement sump, and then discharged to the outdoor rainwater well by the submersible pump.

[0004] Since the water supply source for conventional cooling towers is tap water, a large amount of water resources are consumed; at the same time, the air-conditioning condensate produced in each room is discharged as wastewater, resulting in a waste of water resources and electricity. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and the utility model provides a cooling tower water replenishment system.

[0006] The utility model is realized by the following technical solutions:

[0007] A cooling tower water replenishment system comprises a cooling tower, a condensing water pipe, a first water replenishment pump, a clean water tank and a recovery pipe, wherein both ends of the recovery pipe are respectively connected to the bottom of the condensing water pipe and the cooling tower and are communicated with the condensing water pipe and a water collecting pan of the cooling tower, and the inlet and outlet of the first water replenishment pump are respectively connected to the clean water tank and the cooling tower and are communicated with the clean water tank and the water collecting pan of the cooling tower.

[0008] Furthermore, there are multiple cooling towers, the clean water tank is connected to the multiple cooling towers through a water supply pipe and communicates with the water collecting pans of the multiple cooling towers, and the first water supply pump is arranged on the water supply pipe.

[0009] Furthermore, there are multiple condensate pipes and one recovery pipe, one end of the recovery pipe is connected to the bottom of the multiple condensate pipes and communicates with the multiple condensate pipes, and the other end of the recovery pipe is connected to one of the multiple cooling towers.

[0010] Furthermore, a connecting pipe is provided between the plurality of cooling towers so that the water collecting pans of the plurality of cooling towers are connected to each other.

[0011] Furthermore, the cooling tower water replenishment system also includes a condensate water storage tank, and the two ends of the recovery pipe are respectively connected to the bottom of the condensate water pipe and the condensate water storage tank and communicate with the condensate water pipe and the condensate water storage tank. The condensate water storage tank is connected to the cooling tower through a water replenishment pipe and communicates with the water collecting pan of the cooling tower.

[0012] Furthermore, the cooling tower water replenishment system also includes a second water replenishment pump, which is arranged on the water replenishment pipe, and the inlet and outlet of the second water replenishment pump are respectively connected to the condensate storage tank and the water collecting pan of the cooling tower.

[0013] Furthermore, the cooling tower water replenishment system also includes a connecting pipe, both ends of which are respectively connected to the clean water tank and the condensate water storage tank and communicate with the clean water tank and the condensate water storage tank, and the first water replenishment pump is arranged on the connecting pipe.

[0014] Furthermore, there are multiple cooling towers, and the condensed water storage tank is connected to the multiple cooling towers through the water supply pipe and communicates with the water collecting pans of the multiple cooling towers.

[0015] Furthermore, there are multiple condensate pipes and one recovery pipe, one end of the recovery pipe is connected to the bottom of the multiple condensate pipes and communicates with the multiple condensate pipes, and the other end of the recovery pipe is connected to the condensate storage tank.

[0016] Furthermore, the outer surface of the condensate pipe and / or the recovery pipe is coated with a heat insulation layer.

[0017] The beneficial effects of the utility model are:

[0018] The cooling tower water replenishment system of the utility model, the clean water tank replenishes water to the water collecting pan of the cooling tower through the first water replenishment pump, and at the same time, the condensed water in the condenser pipe flows to the water collecting pan of the cooling tower through the recovery pipe, which not only can make the originally discarded condensed water serve as one of the replenishment water sources of the cooling tower, thereby reducing the consumption of tap water and saving a large amount of water resources, but also saves the electric energy for lifting and discharging the condensed water and the electric energy for lifting and supplying the tap water. Moreover, in summer, the temperature of the condensed water reaching the water collecting pan is slightly lower than the tap water replenishment temperature, which will not have an adverse effect on the efficiency of the refrigeration unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the cooling tower water replenishment system of Example 1 of the utility model.

[0020] Figure 2 This is a schematic structural diagram of a cooling tower water replenishment system according to Embodiment 2 of the present utility model.

[0021] Description of reference numerals:

[0022] Cooling Tower 1

[0023] Water collection tray 11

[0024] Condensate pipe 2

[0025] Lowest condensate connection 21

[0026] Clean water tank 3

[0027] First water supply pump 4

[0028] Recovery tube 5

[0029] Water supply pipe 6

[0030] Condensate storage tank 7

[0031] Second water supply pump 8

[0032] Connecting pipe 9 DETAILED DESCRIPTION

[0033] The following descriptions of the embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented.

[0034] Example 1

[0035] like Figure 1 As shown, the present embodiment discloses a cooling tower water replenishment system, which includes a cooling tower 1, a condensate water pipe 2, a first water replenishment pump 4, a clean water tank 3 and a recovery pipe 5, wherein both ends of the recovery pipe 5 are respectively connected to the bottom of the condensate water pipe 2 and the cooling tower 1 and are communicated with the condensate water pipe 2 and the water collecting pan 11 of the cooling tower 1, and the inlet and outlet of the first water replenishment pump 4 are respectively connected to the clean water tank 3 and the cooling tower 1 and are communicated with the clean water tank 3 and the water collecting pan 11 of the cooling tower 1.

[0036] In this embodiment, the clean water tank 3 is directly connected to the cooling tower 1 through the first water supply pump 4, and the recovery pipe 5 is directly connected to the cooling tower 1. The inlet and outlet of the first water supply pump 4 are respectively connected to the clean water tank 3 and the cooling tower 1 and communicate with the water collecting pan 11 in the clean water tank 3 and the cooling tower 1. The clean water tank 3 replenishes water to the water collecting pan 11 of the cooling tower 1 through the first water supply pump 4; the two ends of the recovery pipe 5 are respectively connected to the bottom of the condensed water pipe 2 and the cooling tower 1 and communicate with the condensed water pipe 2 and the water collecting pan 11 of the cooling tower 1. The condensed water in the condensed water pipe 2 flows to the water collecting pan 11 of the cooling tower 1 through the recovery pipe 5, which not only allows the condensed water that was originally discarded to be used as one of the water supply water sources for the cooling tower 1, reduces the amount of tap water used and saves a lot of water resources, but also saves the electric energy for lifting and discharging the condensed water and the electric energy for lifting and supplying the tap water. Moreover, in summer, the temperature of the condensed water reaching the water collecting pan 11 is slightly lower than the tap water supply temperature, which will not have an adverse effect on the efficiency of the refrigeration unit. At the same time, the condensate storage tank and the second water supply pump can be omitted, simplifying the system and saving costs. In high-rise office and hotel projects, most of the air-conditioning service areas are concentrated in the tower, and the cooling tower is usually located on the roof of the podium. The condensate can flow to the water collection tray of the cooling tower by gravity without the need for a water pump.

[0037] There are multiple cooling towers 1, the clean water tank 3 is connected to the multiple cooling towers 1 through the water supply pipe 6 and is connected to the water collection trays 11 of the multiple cooling towers 1, and the first water supply pump 4 is arranged on the water supply pipe 6. The first water supply pump 4 is used to pressurize and provide power, so that the tap water in the clean water tank 3 is pressurized and flows to the water collection tray 11 of the cooling tower 1, ensuring that the cooling tower water supply system can operate normally.

[0038] There are multiple condensing water pipes 2, and one recovery pipe 5. One end of the recovery pipe 5 is connected to the bottom of multiple condensing water pipes 2 and communicates with multiple condensing water pipes 2, and the other end of the recovery pipe 5 is connected to one of the multiple cooling towers 1. In high-rise office and hotel projects, the cooling tower 1 is set on the roof of the podium, and the condensing water is collected by gravity flow, which is the most energy-saving method, and connected to the water collection tray 11 of the cooling tower 1. At the same time, the condensing water in multiple condensing water pipes 2 will all flow into one recovery pipe 5, so as to realize the recycling of condensing water. Only one recovery pipe 5 is needed, which can save pipe materials to the maximum extent and simplify the system.

[0039] Among them, it is necessary to ensure that all condensate water interfaces of this condensate water collection and utilization system are higher than the high liquid level of the water collecting pan 11 of the cooling tower 1. At the same time, the height of the lowest condensate water interface 21 from the water collecting pan 11 of the cooling tower 1 should be greater than the pipeline resistance generated by the condensate water flowing from the interface to the water collecting pan 11, thereby ensuring that the water in the condensate pipe 2 flows to the cooling tower 1 through the recovery pipe 5, and no water pump is required, saving costs.

[0040] The multiple cooling towers 1 are connected to each other through connecting pipes to realize the connection of the water collecting pans 11 of the multiple cooling towers 1. Therefore, the recovery pipe 5 only needs to be connected to the water collecting pan 11 of one cooling tower 1, and the water volume can be distributed through the connecting pipe, which can save pipe materials to the maximum extent and simplify the system. In this embodiment, the water supply pipe 6 is connected to each cooling tower 1.

[0041] In this embodiment, the outer surface of the condensate pipe 2 and / or the recovery pipe 5 is covered with an insulation layer, and the insulation layer is used to keep the water in the condensate pipe 2 and / or the recovery pipe 5 warm, thereby saving energy.

[0042] The insulation material of the insulation layer can be rubber and plastic insulation. Preferably, the insulation layer is a flexible foam rubber and plastic product, and the thickness of the insulation layer is divided into 5mm grades, so the anti-condensation thickness is determined to be 20mm. The condensate pipe 2 and / or the recovery pipe 5 are DN65 hot-dip galvanized steel pipes, and the anti-condensation thickness is calculated to be 20mm according to the above process.

[0043] In actual use, the cooling tower water replenishment system of this embodiment is used as an example of a high-end hotel project that is in the process of water supply and drainage design. The design parameters of cooling tower 1 are: wet bulb temperature is 28°C, water inlet temperature is 37°C, and water outlet temperature is 32°C. A total of 3 groups of cooling towers 1 are configured, of which two groups have a circulation flow rate of 618m 3 / h, a set of circulation flow is 249m 3 / h, the air conditioning cooling load in summer is 6000kW. According to the calculation formula of condensed water volume, condensed water volume = air conditioning cooling load * 0.4kg / kW.h * (70% ~ 80%). Calculated as 120 days of refrigeration and air conditioning use per year, the total condensed water volume is 6000*24*120*0.4*0.75 / 1000=5184m 3 The cooling water replenishment volume is 1.5% of the circulation flow of cooling tower 1, and the total water volume is 1.5%*(618*2+249)*24*120=64152m 3 The amount of condensed water produced is approximately (5184 / 64152) = 8% of the cooling water replenishment amount.

[0044] In the cooling tower water replenishment system of this embodiment, condensed water is reasonably utilized, reducing the power consumption of lifting and discharging. The amount of tap water is reduced, reducing the power consumption of tap water lifting and supply. The condensed water collection pipeline can use the drainage pipeline of the original system, and there is no need to add a pipeline system. In summer, the temperature of condensed water reaching the water collection tray is slightly lower than the tap water replenishment temperature, which will not have an adverse effect on the efficiency of the refrigeration unit.

[0045] The water replenishment is controlled by the float in the water collecting pan 11. When the high liquid level is reached, the float valve is closed. When the circulating cooling water in the cooling tower 1 evaporates continuously and reaches the low liquid level, the float valve is opened to replenish water. The amount of condensed water generated is about 8% of the cooling water replenishment amount, so the amount of condensed water generated is much smaller than the amount of cooling water evaporation. The 24-hour self-flow replenishment of condensed water will not increase the liquid level of the water collecting pan 11, so it will not affect the control of the hydraulic control valve corresponding to the water collecting pan 11 on the tap water replenishment. At the same time, the entire condensed water collection and replenishment do not require any valves and electrical controls, and can be fully integrated into the original tap water replenishment system without any adverse effects on the original system.

[0046] Example 2

[0047] like Figure 2 As shown, the structure of the cooling tower water supply system of this embodiment 2 is not repeated in the same part as that of embodiment 1, and only the differences are described. In embodiment 1, the clean water tank 3 is directly connected to the cooling tower 1 through the first water supply pump 4, and the recovery pipe 5 is directly connected to the cooling tower 1. In this embodiment 2, the cooling tower water supply system also includes a condensed water storage tank 7, and the two ends of the recovery pipe 5 are respectively connected to the bottom of the condensed water pipe 2 and the condensed water storage tank 7 and communicate with the condensed water pipe 2 and the condensed water storage tank 7. The condensed water storage tank 7 is connected to the cooling tower 1 through the water supply pipe 6 and communicates with the water collection pan 11 of the cooling tower 1. The top end of the recovery pipe 5 is connected to the bottom of the condensed water pipe 2, and the bottom end of the recovery pipe 5 is connected to the condensed water storage tank 7. The condensed water in the condensed water pipe 2 flows into the condensed water storage tank 7 by gravity, and the condensed water in the condensed water storage tank 7 flows into the water collection pan 11 of the cooling tower 1 through the water supply pipe 6.

[0048] The condensed water is first collected in a condensed water storage tank 7, and the cooling tower 1 water supply source first uses condensed water, and the insufficient water is supplemented by tap water. This system can use the original condensed water drainage pipe to collect condensed water, and then flow to the water collection tray 11 of the cooling tower 1 through the water supply pipe 6, ensuring the normal operation of the cooling tower water supply system.

[0049] The cooling tower water supply system also includes a second water supply pump 8, which is arranged on the water supply pipe 6, and the inlet and outlet of the second water supply pump 8 are respectively connected to the condensed water storage tank 7 and the water collection pan 11 of the cooling tower 1. The second water supply pump 8 is used to pressurize and provide power, so that the water in the condensed water storage tank 7 is pressurized and flows to the water collection pan 11 of the cooling tower 1, ensuring that the cooling tower water supply system can operate normally.

[0050] The cooling tower water replenishment system also includes a connecting pipe 9, both ends of which are respectively connected to the clean water tank 3 and the condensed water storage tank 7 and communicate with the clean water tank 3 and the condensed water storage tank 7, and the first water replenishment pump 4 is arranged on the connecting pipe 9. When the amount of condensed water collected in the condensed water storage tank 7 is insufficient, the tap water in the clean water tank 3 flows into the condensed water storage tank 7 through the connecting pipe 9 for replenishment.

[0051] There are multiple cooling towers 1, and the condensed water storage tank 7 is connected to the multiple cooling towers 1 through the water supply pipe 6 and communicates with the water collecting pans 11 of the multiple cooling towers 1. The condensed water storage tank 7 supplies water to the multiple cooling towers 1 through the water supply pipe 6 at the same time.

[0052] In this embodiment, a plurality of cooling towers 1 are connected through a connecting pipe to realize that the water collecting pans 11 of the plurality of cooling towers 1 are connected. One end of the water supply pipe 6 is connected to the condensed water storage tank 7, and the other end of the water supply pipe 6 is connected to each cooling tower 1. At the same time, a plurality of cooling towers 1 are also connected through a connecting pipe to realize that the water collecting pans 11 of the plurality of cooling towers 1 are connected.

[0053] There are multiple condensate pipes 2 and one recovery pipe 5 . One end of the recovery pipe 5 is connected to the bottom of the multiple condensate pipes 2 and communicates with the multiple condensate pipes 2 . The other end of the recovery pipe 5 is connected to the condensate storage tank 7 .

[0054] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A cooling tower water replenishment system, characterized in that: It includes a cooling tower, a condensing water pipe, a first water supply pump, a clean water tank and a recovery pipe. The two ends of the recovery pipe are respectively connected to the bottom of the condensing water pipe and the cooling tower and are communicated with the condensing water pipe and the water collecting pan of the cooling tower. The inlet and outlet of the first water supply pump are respectively connected to the clean water tank and the cooling tower and are communicated with the clean water tank and the water collecting pan of the cooling tower.

2. The cooling tower water replenishment system according to claim 1, characterized in that: There are multiple cooling towers, the clean water tank is connected to the multiple cooling towers through a water supply pipe and communicates with the water collecting pans of the multiple cooling towers, and the first water supply pump is arranged on the water supply pipe.

3. The cooling tower water replenishment system according to claim 2, characterized in that: There are multiple condensation water pipes and one recovery pipe. One end of the recovery pipe is connected to the bottom of the multiple condensation water pipes and communicates with the multiple condensation water pipes, and the other end of the recovery pipe is connected to one of the multiple cooling towers.

4. The cooling tower water replenishment system according to claim 2, characterized in that: The plurality of cooling towers are connected by connecting pipes so that the water collecting pans of the plurality of cooling towers are connected.

5. The cooling tower water replenishment system according to claim 1, characterized in that: The cooling tower water replenishment system also includes a condensate storage tank, and the two ends of the recovery pipe are respectively connected to the bottom of the condensate pipe and the condensate storage tank and communicate with the condensate pipe and the condensate storage tank. The condensate storage tank is connected to the cooling tower through a water replenishment pipe and communicates with the water collecting pan of the cooling tower.

6. The cooling tower water replenishment system according to claim 5, characterized in that: The cooling tower water replenishment system also includes a second water replenishment pump, which is arranged on the water replenishment pipe, and the inlet and outlet of the second water replenishment pump are respectively connected to the condensate storage tank and the water collecting pan of the cooling tower.

7. The cooling tower water replenishment system according to claim 5, characterized in that: The cooling tower water replenishment system also includes a connecting pipe, both ends of which are respectively connected to the clean water tank and the condensate water storage tank and communicate with the clean water tank and the condensate water storage tank, and the first water replenishment pump is arranged on the connecting pipe.

8. The cooling tower water replenishment system according to claim 5, characterized in that: There are multiple cooling towers, and the condensed water storage tank is connected to the multiple cooling towers through the water supply pipe and communicates with the water collecting pans of the multiple cooling towers.

9. The cooling tower water replenishment system according to claim 5, characterized in that: There are multiple condensate pipes and one recovery pipe. One end of the recovery pipe is connected to the bottom of the multiple condensate pipes and communicates with the multiple condensate pipes, and the other end of the recovery pipe is connected to the condensate storage tank.

10. The cooling tower water replenishment system according to any one of claims 1 to 9, characterized in that: The outer surface of the condensed water pipe and / or the recovery pipe is covered with a heat insulation layer.

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