CN210374693U

CN210374693U - Cooling tower cluster system

Info

Publication number: CN210374693U
Application number: CN201920882654.XU
Authority: CN
Inventors: 王福山; 丁继军; 杨坡
Original assignee: Shandong Information Industry Service Co ltd
Current assignee: Shandong Information Industry Service Co ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-04-21
Anticipated expiration: 2029-06-13

Abstract

The utility model discloses a cooling tower cluster system, wherein each cooling tower and a corresponding chilled water unit form a subsystem through a water supply pipe and a water return pipe, and the water supply pipe is connected in parallel through a water supply header and the water return pipe is connected in parallel through a water return header on the side of the cooling tower; a water supply valve is arranged on a branch pipe of each water supply pipe connected to the water supply header; and a water return valve is arranged on a branch pipe of each water return pipe connected to the water return header. The foundation the utility model discloses a cooling tower cluster system can effectively improve the cooling tower utilization ratio.

Description

Cooling tower cluster system

Technical Field

The utility model relates to a system of constituteing by cooling tower.

Background

In the field of heating, ventilation and air conditioning, each cooling tower is usually combined with a chilled water unit (also called cooling water air conditioning unit) to form an independent system, and in an application system, the independent systems operate independently from each other without being linked. The independent system is adopted in the technical field of heating ventilation and air conditioning, and has the relatively obvious advantages of strong independence and no influence of the running conditions of other units; however, the disadvantage is also evident in that, in the event of a failure of each unit or cooling tower in a single set of independent systems, the operation of the independent systems is affected until the machine is shut down.

In addition, in the commercial and industrial heating, ventilating and air conditioning field, the application objects, such as data centers, basically need continuous cooling, and once the cooling is stopped, the data centers stop operating in a short time due to the overhigh ambient temperature in the machine room. Therefore, the aforementioned independent systems need to be distinguished into a common system and a backup system, and in some applications, an independent reservation system is also provided to ensure uninterrupted operation of the cooling object.

Therefore, based on the independent systems, the independent systems operate independently, and the standby or reserved independent system is often in an idle state for a long time, which may result in idle loss on one hand, and on the other hand, it is known in the mechanical field that the operation reliability cannot be guaranteed due to long-term limitation of the equipment.

Disclosure of Invention

An object of the utility model is to provide a can effectively improve cooling tower cluster system of cooling tower utilization ratio.

The embodiment of the utility model provides a cooling tower cluster system, each cooling tower and the corresponding chilled water unit form a subsystem through a water supply pipe and a water return pipe, the water supply pipe is connected in parallel through a water supply header pipe, and the water return pipe is connected in parallel through a water return header pipe on the side of the cooling tower;

a water supply valve is arranged on a branch pipe of each water supply pipe connected to the water supply header;

and a water return valve is arranged on a branch pipe of each water return pipe connected to the water return header.

The cooling tower cluster system can be used for cooling the cooling towers with 2 or 3 cooling towers.

In some embodiments, if the water supply valve and the water return valve are both solenoid valves, a temperature sensor for monitoring the temperature of the return water is arranged on the side of the cooling tower, so as to dynamically control the number of cooling towers which are put into use through a relay contact system or a controller.

In some embodiments, the water supply valve and the water return valve are both manual valves.

The embodiment of the utility model provides an in, get up each subsystem antithetical couplet through antithetical couplet collection pipeline equivalently, when a subsystem operation, still can use the cooling tower of reserving or reserve subsystem, be equivalent to on the whole and increased total heat radiating area. It should be noted that, in the field of commercial and industrial heating, ventilation and air conditioning, the cooling tower side equipment belongs to equipment which is not prone to failure, and is also the side with lower operation cost in the commercial and industrial heating, ventilation and air conditioning, and the operation energy consumption can be reduced on the whole by calling the cooling tower in the standby or reserved subsystem.

In addition, because the cooling tower is generally open-air equipment, natural loss in an idle state is not less than that in an operating state, and even if one cooling tower breaks down, the whole operation is not influenced by switching to other cooling towers through a valve.

Drawings

FIG. 1 is a schematic diagram of a cooling tower training system according to an embodiment.

In the figure: 1. the cooling system comprises a water supply header, a three-way joint, a water return header, a cooling tower, a water supply valve, a water return valve, a tee joint, a water supply pipe, a water return pipe, a branch pipe and a branch pipe, wherein the water supply header is 2, the tee joint is 3, the water return header is 4, the cooling tower is 5, the water supply valve is 6, the water return valve is 7, the tee joint is 8.

Detailed Description

Because the utility model discloses a mode through the structure cooling tower cluster is with the utilization ratio that improves the cooling tower and the different service environment of better reply.

It is understood that some technical means, which have not been proposed before, are not noticed by those skilled in the art, or even considered, especially as described in the background section, subject to the redundant thinking of backup or reservation, etc., and that those skilled in the art will adopt the strategy of subsystem independent operation for stronger reasons.

With regard to cooling tower clusters, the inventors consider that once proposed, it is relatively easy to implement, and therefore, the principle is explained hereinafter only with the structure shown in fig. 1, by which a person skilled in the art can easily implement, but does not represent a contribution of the lack thereof to the prior art.

As can be seen from the attached figure 1 in the specification, the existence of the water supply header 1 and the water return header 3 does not affect the independent operation of each subsystem, and in the state that the water supply valve 5 and the water return valve 6 are closed as shown in the figure, each cooling tower 4 is connected with the corresponding chilled water unit through the water supply pipe 8 and the water return pipe 9 which are allocated to the cooling tower to form the independent subsystem.

In fig. 1, there are three cooling towers 4, and each cooling tower 4 is provided with a water supply pipe 8 and a water return pipe 9 for connecting to a corresponding chilled water unit (not shown), which is a device for cooling a target cooling object.

The cooling tower 4(The cooling tower) is a device using water as a circulating coolant, and corresponds to an outdoor unit of an air conditioner. The cooling tower 4 and the chilled water unit form a subsystem through the water supply pipe 8 and the water return pipe 9, heat absorbed by the chilled water unit is circulated to the cooling tower through the water return pipe 9 for heat dissipation, and cooled cooling water is circulated to the chilled water unit through the water supply pipe 8 for cooling a target device or a place.

The cooling tower 4 is generally constructed in the open air, and is an evaporation heat dissipation device which utilizes the principles that cooling water is in flowing contact with air to perform heat exchange to generate steam, the steam volatilizes and takes away heat to achieve evaporation heat dissipation, convection heat transfer, radiation heat transfer and the like to dissipate waste heat generated in industry or cooling water refrigerating units to reduce water temperature, so as to ensure the normal operation of the system, and the cooling tower 4 is generally barrel-shaped and is named as the cooling tower 4.

The loss of the cooling tower 4 comes from the operation loss of the cooling fan and the pumping loss of the cooling water, for example, the power of a single cooling tower side is 22 kilowatts, the power of the refrigerating water unit connected with the cooling tower 4 is about 80 kilowatts when the water supply temperature of the cooling tower side 4 is 25 ℃, and the power of the refrigerating water unit is close to 200 kilowatts when the water supply temperature of the cooling tower side 4 is 28 ℃, in other words, the power loss of the cooling tower side 4 is far lower than that of the refrigerating water unit side, especially in summer.

The inventor thinks that the cooling tower 4 with more investment seems to increase the power consumption, but under the condition of increasing the cooling tower 4, the total heat dissipation area can be increased, the water supply temperature is greatly reduced, the power consumption of the adaptive chilled water unit is reduced by times, and the overall power consumption is relatively low.

In view of the above, the inventor believes that, under the condition that one subsystem is completely put into operation, a large amount of cooling towers 4 are put into operation, and the energy consumption of a commercial heating, ventilating and air conditioning system, for example, can be greatly reduced on the whole by reducing the temperature of the supplied water.

In addition, the cooling tower 4 is of a pure mechanical frame structure except for the cooling fan and the water supply pump, so that the number of fault points is very small, and the faults are not easy to occur.

As can be seen in particular from the three cooling towers 4 shown in fig. 1, the three cooling towers 4 can each be used to build a subsystem, and are also provided with a return water header 3 and a supply water header 1, wherein the supply water header 1 is used to connect in parallel the three supply pipes 8 shown in the figure, and the return water header 3 is used to connect in parallel the three return pipes 9 shown in the figure.

Further, a water supply valve 5 is installed on a branch pipe 10 of each water supply pipe 8 connected to the water supply header 1.

A water return valve 6 is arranged on a branch pipe 11 of each water return pipe 9 connected to the water return header 3.

In the figure, both ends of the water supply header 1 in the direction of the right and left arrangement can be understood as two branch pipes 10. Supposing that the subsystem to which the cooling tower 4 located at the leftmost belongs is put into operation, and with the increase of the water supply temperature, higher requirements are made on the cooling efficiency, and at this time, it is supposed that all the water supply valves 5 and the water return valves 6 are opened, because the other two subsystems are not put into operation, the cooling water does not participate in the respective subsystems, but is introduced into the leftmost subsystem based on the communication of the header pipes based on the pump communication, and one subsystem is equivalent to having three cooling towers 4, so that the heat dissipation capacity is greatly increased, the water supply temperature can be effectively reduced, and the load of the chilled water unit is reduced.

Although the cooling tower 4 with a large investment increases the power consumption of the cooling tower 4, the power consumption of the chilled water unit is reduced by a multiple according to the overall power consumption principle, so that the overall power consumption is reduced relatively greatly.

If the subsystem that cooling tower 4 that is located the leftmost belonged to breaks down, then can directly switch to the subsystem that other cooling tower 4 belonged to, do not change other subsystem backup or the status of reserving from the essence, in other words, on the basis of the utility model discloses have traditional refrigerated water air conditioning system's advantage concurrently.

As shown in fig. 1, the number of cooling towers 4 is 3. It should be noted that in some chilled water air conditioning systems, the number of cooling towers 4 may be as many as ten, tens or even more, and the embodiment shown in fig. 1 is merely used for exemplary purposes to illustrate the principles of the present invention.

Furthermore, the 3 cooling towers 4 shown in FIG. 1 essentially constitute one unit of a cooling tower cluster, and there may be many such units in a chilled water air conditioning system.

In general, for some applications, one subsystem is adapted, and three cooling towers 4 are basically used to satisfy most of the use environments.

In addition, in some applications, there may be only two cooling towers 4 in a cluster unit, adapted as two subsystems, one master and one slave.

In some embodiments, if the water supply valve 5 and the water return valve 6 are both solenoid valves, a temperature sensor for monitoring the temperature of the return water is arranged on the cooling tower 4 side, so as to dynamically control the number of cooling towers which are put into use through a relay contact system or a controller.

It should be noted that the claimed invention is not a complete apparatus, but only a cooling tower cluster part, and the relay contact system or the controller is not included in the cooling tower cluster.

In some embodiments, the water supply valve 5 and the water return valve 6 are both manual valves, and the water supply temperature may be manually controlled.

As a further description, in the north, such as Shandong province, four seasons are clear, the time variation of the use environment of the cooling tower 4 is large, such as Qingdao area, the humidity is very high in seventy-eight months, for the open cooling tower 4, the high humidity can seriously weaken the heat dissipation function based on evaporation, which inevitably results in high water supply temperature, if the cost of simply increasing the power of the chilled water unit is too high, and other cooling towers 4 are added in the running subsystem, although the power consumption can be increased on the cooling tower 4 side, the power consumption can be greatly reduced on the chilled water unit side, and the overall power consumption is relatively low.

Claims

1. A cooling tower cluster system, each cooling tower and corresponding chilled water unit form a subsystem through water supply pipe and return pipe, wherein, on the side of cooling tower, connect the water supply pipe in parallel through the union pipe of supplying water, connect the return pipe in parallel through the union pipe of returning water;

2. The cooling tower cluster system of claim 1, wherein the number of cooling towers is 2 or 3.

3. The cooling tower cluster system as claimed in claim 1, wherein the water supply valve and the water return valve are solenoid valves, and a temperature sensor for monitoring the temperature of the return water is provided at the cooling tower side, so as to dynamically control the number of cooling towers to be put into use by a relay contact system or a controller.

4. The cooling tower cluster system of claim 1, wherein the water supply valve and the water return valve are both manual valves.