CN113375245B

CN113375245B - Drainage system

Info

Publication number: CN113375245B
Application number: CN202110679006.6A
Authority: CN
Inventors: 姚德强; 苏少华; 顾鹏
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2023-04-18
Anticipated expiration: 2041-06-18
Also published as: CN113375245A

Abstract

The utility model provides a drainage system relates to data center technical field, especially relates to technical fields such as cooling technology, intelligent control, cloud calculate. The specific scheme is as follows: the drainage system comprises indirect evaporative cooling equipment, a drainage pump and a first controller, wherein the indirect evaporative cooling equipment is provided with a water tray, and the drainage pump is connected with a drainage port of the water tray; the first controller is electrically connected with the drainage pump and is used for controlling the starting and stopping of the drainage pump. The controllable drain pump of first controller starts, and the accessible drain pump carries out the drainage to the water tray, so, can accelerate water tray drainage speed, improve drainage efficiency.

Description

Drainage system

Technical Field

The disclosure relates to the technical fields of cooling technology, intelligent control, cloud computing and the like of a data center, in particular to a drainage system.

Background

As the data center is provided with a plurality of operating devices, a large amount of heat can be generated in the operating process of the devices, the normal operation of the devices can be influenced by higher temperature, and the reliability and stability of the whole data center are influenced, so that the cooling of the data center is the core of schedule operation and maintenance work. At present, data centers use more and more indirect evaporative cooling equipment (abbreviated as IDEC), and the IDEC is used for cooling the indoor space of the data center, wherein the wastewater of the IDEC can be recovered through a water tray of the IDEC, and water is taken from the water tray and sprayed to a heat exchanger of the IDEC to dissipate the heat of the IDEC.

At present, the existing drainage mode of the water tray is generally to connect a pipeline to the drainage outlet of the water tray, and drain the water of the water tray through natural gravity.

Disclosure of Invention

The present disclosure provides a drainage system.

In a first aspect, one embodiment of the present disclosure provides a drain system comprising an indirect evaporative cooling apparatus, a drain pump, and a first controller, wherein:

the indirect evaporative cooling equipment is provided with a water tray, and the drainage pump is connected with a drainage port of the water tray;

the first controller is electrically connected with the drainage pump and is used for controlling the starting and stopping of the drainage pump.

In this implementation, including the indirect evaporative cooling equipment, drain pump and the first controller that are provided with the water tray in the drainage system, the drain pump is connected with the outlet of water tray, and the steerable drain pump of through first controller starts, and accessible drain pump carries out the drainage to the water tray, so, can accelerate water tray drainage speed, improves drainage efficiency.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

FIG. 1 is one of the block diagrams of a drainage system of one embodiment provided by the present disclosure;

FIG. 2 is a block diagram of an indirect evaporative cooling apparatus of an embodiment;

FIG. 3 is a second block diagram of a drainage system of one embodiment provided by the present disclosure;

FIG. 4 is a third block diagram of a drain system of one embodiment provided by the present disclosure;

fig. 5 is a fourth of the structural view of a drainage system of one embodiment provided by the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

As shown in fig. 1, according to an embodiment of the present disclosure, the present disclosure provides a drain system including an indirect evaporative cooling apparatus 101, a drain pump 102, and a first controller 103, wherein:

the indirect evaporative cooling equipment 101 is provided with a water disc 1011, and the drainage pump 102 is connected with a drainage port of the water disc 1011;

the first controller 103 is electrically connected to the drain pump 102, and the first controller 103 is configured to control start and stop of the drain pump 102.

It should be noted that, as shown in fig. 1-2, the indirect evaporative cooling device 101 is further provided with a heat exchanger 1012, indoor air enters the heat exchanger 1012 through the indoor air inlet 1013 to realize indoor side air return, the indoor air entering from the indoor air inlet 1013 is cooled by the heat exchanger 1012, and the cooled air is output through the indoor air supply outlet 1014 to realize indoor side air supply and reduce the temperature in the data center room. Outdoor air is sent into the heat exchanger 1012 through the outdoor air inlet 1015 of the indirect evaporative cooling equipment 101, so that outdoor side air inlet is realized, the temperature of the outdoor air is raised after the heat exchange is carried out on the outdoor air through the heat exchanger 1012, and the heated air is discharged to the outdoor through the outdoor air outlet 1016, so that outdoor side air exhaust is realized. It can be understood that the heat exchanger 1012 exchanges heat with the outdoor air to cool the indoor air. In addition, in order to cool the heat exchanger 1012, the heat exchanger 1012 may be sprayed, and the sprayed water enters the water pan 1011, so that the water pan 1011 needs to be drained.

The water drainage system of the embodiment is used for performing water drainage control on the water pan 1011 of the indirect evaporative cooling apparatus 101, wherein the water drainage pump 102 of the water drainage system is connected with the water drainage port of the water pan 1011, and the start and stop of the water drainage pump 102 can be controlled by the first controller 103. As an example, the state of the drainage system may include a first operation state and a second operation state, in the first operation state, the drainage pump 102 is started, if the water in the water tray 1011 flows into the drainage pump 102 through the through drainage port, the water tray 1011 can be drained by the started drainage pump 102, and in the second operation state, the drainage pump 102 is stopped (i.e. turned off), that is, the drainage pump 102 stops draining the water tray 1011. When the drain pump 102 is started, water in the water disc 1011 is transferred to the drain pump 102 through the drain port, and the water is drained through the opened drain pump 102, that is, the water is drained from the water disc 1011 through the drain pump 102, so that the drainage speed of the water disc 1011 is accelerated, and the drainage efficiency is improved.

In this embodiment, the drainage system includes the indirect evaporative cooling device 101 provided with the water tray 1011, the drainage pump 102 and the first controller 103, the drainage pump 102 is connected to the drainage outlet of the water tray 1011, the drainage system of this embodiment can control the starting of the drainage pump 102 through the first controller 103, the water in the water tray 1011 can flow into the drainage pump 102 through the drainage outlet, and the drainage of the water tray 1011 can be performed through the drainage pump 102, so that the drainage speed of the water tray 1011 can be accelerated, and the drainage efficiency can be improved.

As shown in fig. 3, in an embodiment, the drainage system further includes a drainage valve 104, the drainage pump 102 is connected to the drainage port of the water tray 1011 through the drainage valve 104, wherein the water inlet of the drainage valve 104 is connected to the drainage port of the water tray 1011, the drainage pump 102 is communicated with the water outlet of the drainage valve 104, and the indirect evaporative cooling device 101 is further provided with a second controller (not shown);

the second controller is electrically connected to the drain valve 104, and the second controller is configured to control opening and closing of the drain valve 104.

The second controller may control the drain valve 104 to be opened, and the water flowing out of the water tray 1011 through the drain port flows into the drain pump 102 through the opened drain valve 104, so that the water tray 1011 may be in a drain state and the drain pump 102 communicates with the drain port of the water tray 1011 through the opened drain valve 104. In addition, the second controller may control the drain valve 104 to be closed, so as to block the water flow between the drain opening of the water tray 1011 and the drain pump 102, i.e., the closed drain valve 104 may prevent the water on the water tray 1011 from flowing out through the drain opening, so as to stop the water tray 1011 from draining. It should be noted that, in the first operation state of the drainage system, the drainage valve 104 is opened and the drainage pump 102 is started, so that the drainage pump 102 drains the water from the water tray 1011, and in the second operation state of the drainage system, the drainage pump 102 is stopped, and the drainage valve 104 may be opened or closed, that is, the drainage pump 102 stops draining the water from the water tray 1011. When the drain valve 104 is opened and the drain pump 102 is started, the water in the water tray 1011 is drained through the drain port, the drain pump 102 is communicated with the water outlet of the drain valve 104 through the opened drain valve 104, the water is drained through the opened drain pump 102, that is, the water is drained to the water tray 1011 through the drain pump 102, the drainage speed of the water tray 1011 is accelerated, and the drainage efficiency is improved.

In this embodiment, the drainage system further includes a drainage valve 104, and the indirect evaporative cooling apparatus 101 is further provided with a second controller, which can control the opening and closing of the drainage valve, so as to control the drainage of the water disk 1011 to start and stop. That is, the drain valve 104 is added to the drain pump 102, so that even if the drain pump 102 fails to stop, the drain valve 104 can be controlled to stop the drainage of the water tray 1011, and the drainage of the water tray 1011 can be realized when the drain pump 102 is started and the drain valve 104 is opened, thereby improving the accuracy of the drainage control of the water tray 1011.

In one embodiment, the first controller 103 is configured to control the start of the drain pump 102 upon receiving a drain signal sent by the second controller, wherein the second controller sends the drain signal after controlling the opening of the drain valve 104.

As long as the drain valve 104 is opened, the water tray 1011 is continuously in the drainage state, the second controller continuously sends the drainage signal to the first controller 103, the first controller 103 can receive the drainage signal sent by the second controller, until the drain valve 104 is closed, the water tray 1011 is in the closed state, i.e. the non-drainage state, and the second controller stops sending the drainage signal, so that the first controller 103 cannot receive the drainage signal sent by the second controller. The first controller 103 may be configured to control the drain pump 102 to stop and stop the operation of the drain pump 102 when the drain signal sent by the second controller is not received, so that the drain pump 102 may be prevented from continuing to operate when the drain disc 1011 stops draining, the drainage safety may be improved, and the service life of the drain pump 102 may be prolonged. When the second controller controls the drain valve 104 to be opened, the water in the water tray 1011 can flow out through the opened drain valve 104, and sends a drain signal to the first controller 103, and the first controller 103 can control the drain pump 102 to be opened after receiving the drain signal, and the water flowing through the drain valve 104 can be drained through the drain pump 102.

In this embodiment, the second controller may send a drain signal to the first controller 103 after controlling the drain valve 104 to open, that is, notify the first controller 103 that the water tray 1011 is in a drain state, and the first controller 103 may start the drain pump 102 to drain after receiving the drain signal, so as to improve the efficiency of draining the water tray 1011.

As an example, the second controller may control the water discharge valve 104 to open when the water level of the water pan 1011 is detected to exceed the preset water level, when the electric conductivity of the water in the water pan 1011 is detected to be greater than the preset electric conductivity (which may be set according to actual requirements, but is not limited in this embodiment, and may be, for example, 800us/m, etc.), or when the first duration is greater than the preset interval duration, where the first duration may be understood as a time difference between the current time and the time when the water discharge valve 104 was closed last time. The larger the conductivity of the water is, the more impurities are included, the more serious the water pollution is, and when the conductivity is greater than the preset conductivity, the serious the water pollution of the water tray 1011 is, the water pollution of the water tray 1011 needs to be discharged, so that the drain valve 104 can be controlled to be opened, and a drain signal is sent to the first controller 103 to open the drain pump 102, and the drain speed of the water tray 1011 is increased by the drain pump 102. The water level of the water tray 1011 exceeds the preset water level, which indicates that the water tray 1011 is full of water, in order to prevent the water tray 1011 from overflowing, the drain valve 104 can be controlled to be opened, and a drain signal is sent to the first controller 103, the drain pump 102 is started, and the drain speed of the water tray 1011 is increased by the drain pump 102. In addition, the last time may be understood as a time before the current time and closest to the current time, and when the first time is longer than the preset interval time, the time may indicate that the drain valve 104 is not opened for draining for a longer time, and the drain valve 104 may also be controlled to be opened for draining, and a drain signal is sent to the first controller 103 to open the drain pump 102, so that the drain speed of the water tray 1011 is increased by the drain pump 102.

As shown in fig. 4, in one embodiment, the drainage system further includes a water storage tank 105 and a water level sensor, the water level sensor is disposed in the water storage tank 105, the first controller 103 is electrically connected to the water level sensor, and the drainage pump 102 is communicated with the water outlet of the drainage valve 104 through the water storage tank 105;

wherein the water level sensor is used for detecting the water level in the water storage tank 105 and sending a water level sensing signal to the first controller 103 when the water level is detected in the water storage tank 105;

the first controller 103 is configured to control the drainage pump 102 to start when receiving a water level sensing signal sent by the water level sensor.

It is understood that the outlet of the drain valve 104 is connected to the water storage tank 105, the drain pump 102 is connected to the outlet of the drain valve 104 through the water storage tank 105, the drain valve 104 is opened, and the water flowing through the drain valve 104 in the water tray 1011 enters the water storage tank 105. In this embodiment, a water level sensor is disposed in the water storage tank 105, and can detect the water level in the water storage tank 105, the water level sensor generates a water level sensing signal when detecting the water level, and transmits the signal to the first controller 103, and the first controller 103 controls the drainage pump 102 to start when receiving the water level sensing signal, so as to drain water through the drainage pump 102, thereby improving the drainage efficiency, and improving the accuracy of controlling the start of the drainage pump 102 and the drainage safety.

As an example, the drainage pump 102 is turned on when the drainage valve 104 is turned on, that is, the first controller 103 controls the drainage pump 102 to be turned on when receiving the water level sensing signal and the drainage valve 104 is turned on, it can be understood that, when the drainage valve 104 is turned on, the water in the water tray 1011 can enter the water storage tank 105 through the turned-on drainage valve 104, the water storage tank 105 is communicated with the outside of the water tray 1011 through the turned-on drainage valve 104, if the drainage valve 104 is turned off, the water in the water tray 1011 is blocked by the turned-off drainage valve 104, and cannot enter the water storage tank, at this time, if the drainage pump 102 is turned on, since the water in the water tray 1011 cannot reach the water storage tank 105, the drainage pump 102 cannot drain the water in the water tray 1011 even if the drainage valve 104 is turned on, that the drainage of the water tray 1011 cannot be performed effectively by the drainage pump 102, and the damage of the drainage pump 102 is easily caused, which affects the service life of the drainage pump 102. Thus, in this example, the start of the drain pump 102 can be controlled in the case of receiving the water level sensing signal and opening the drain valve 104, the accuracy of the control of the drain pump 102 can be improved, the service life of the drain pump 102 can be prolonged, and the like.

In one embodiment, the drainage system further comprises a pressure sensor disposed within the reservoir 105, the first controller 103 being electrically connected to the pressure sensor;

the pressure sensor is used for detecting the pressure in the water storage tank 105 and sending the detected pressure to the first controller 103;

the first controller 103 is configured to control the drain pump 102 to stop if the pressure is negative or a water level sensing signal sent by the water level sensor is not received after the drain pump 102 is controlled to start.

The water storage tank 105 is internally provided with a pressure sensor, the drain valve 104 is opened, the water storage tank 105 is communicated with the outside of the water tray 1011 through the drain valve 104, the pressure in the water storage tank 105 is normal pressure, if the drain valve 104 is closed, the water storage tank 105 is not communicated with the water tray 1011, the drain pump 102 is closed, and the water storage tank 105 is internally provided with a closed space. As such, whether the water pan 1011 drains through the drain valve 104 may be detected by detecting whether the pressure in the water storage tank 105 is a negative pressure. If the water level is not detected in the water storage tank 105, indicating that there is no water or a small amount of water in the water storage tank 105 (the water level is lower than the lowest water level detectable by the water level sensor), the first controller 103 stops sending the water level sensing signal, that is, the first controller does not receive the water level sensing signal, and the operation of the drain pump 102 can be stopped. That is, in the present embodiment, the drainage pump 102 is controlled to be turned off to stop the drainage pump 102 when the pressure in the water storage tank 105 is detected to be negative pressure or the water level sensing signal transmitted from the water level sensor is not received, so that the accuracy of the drainage control is improved, and the drainage pump 102 is prevented from continuing to operate when the drainage valve 104 is turned off (the water tray 1011 stops draining) or the water level in the water storage tank 105 is not present, so that the drainage safety is improved, and the service life of the drainage pump 102 is prolonged.

As shown in fig. 4, in one embodiment, the drainage system further comprises an electromagnetic exhaust valve 106 disposed in the water storage tank 105;

the first controller 103 is electrically connected with the electromagnetic exhaust valve 106, and the first controller 103 is further used for controlling the opening and closing of the electromagnetic exhaust valve 106;

when the drain valve 104 is closed, the solenoid-operated drain valve 106 is closed, and the drain pump 102 is closed, a closed space is formed in the water tank 105.

The first controller 103, upon receiving the water level sensing signal, may control not only the start of the drain pump 102, but also the closing of the electromagnetic exhaust valve 106, and the opening of the drain valve 104, and drain the water in the water tray 1011 through the started drain pump 102, because the electromagnetic exhaust valve 106 is closed at this time, the drain pump 102 may more effectively draw the water flowing through from the drain valve 104, and drain the water, thereby further improving the drainage effect. When the pressure is negative or the water level sensing signal sent by the water level sensor is not received, the first controller 103 can control the drain pump 102 to stop, and can control the electromagnetic exhaust valve 106 to open, so that the water storage tank 105 can exhaust through the electromagnetic exhaust valve 106, and the pressure in the water storage tank 105 is recovered to be normal.

As shown in fig. 3 and 4, in one embodiment, the drainage system further includes a water replenishing pump 107 and a first spraying device 108, wherein a water outlet end of the water replenishing pump 107 is connected to the first spraying device 108, a water inlet end of the water replenishing pump 107 is communicated with the water reservoir 109, a water outlet end of the drainage pump 102 is communicated with the water reservoir 109, a water inlet end of the drainage pump 102 is communicated with a water outlet of the drainage valve 104, and the first spraying device 108 is disposed in the water pan 1011;

the first controller 103 is electrically connected with the water replenishing pump 107, the first controller 103 is further used for controlling the start and stop of the water replenishing pump 107, and controlling the start of the water replenishing pump 107 at the first time, the water is supplied to the first spraying device 108 through the water replenishing pump 107, and the first time is the sum of the start time of the drainage pump 102 and the first preset time.

The outlet end of the drain pump 102 is connected to the reservoir 109, the drain pump 102 is activated to drain the water pan 1011, and the water drained by the drain pump 102 flows into the reservoir 109, which reservoir 109 may be an outdoor settling tank. The first controller 103 may start the water replenishing pump 107 after controlling the water discharging pump 102 to start for a first preset time, and the water replenishing pump 107 may be a high-pressure water replenishing pump 107. After the water replenishing pump 107 is started, the water replenishing pump 107 can take water from the water storage tank 109 and transmit the water to the first spraying device 108, the water is sprayed through the first spraying device 108, the first spraying device 108 is arranged in the water disc 1011, and the water disc 1011 is washed through the spraying of the first spraying device 108. The first preset time period may be set according to an actual requirement, and in this embodiment, a specific value of the first preset time period is not limited, for example, the first preset time period may be 40 seconds. As one example, the first spray device 108 may be a first spray head or the like. As an example, if the drain system includes a water reservoir 105, the water inlet of the drain pump 102 is communicated with the water outlet of the drain valve 104 via the water reservoir 105.

In this embodiment, need not the manual work and wash water dish 1011, and need not indirect evaporation cooling equipment 101 stop work at the cleaning process, through setting up moisturizing pump 107, moisturizing to first spray set 108 in can following water receiver 109, spray through first spray set 108, the realization is to the washing of water dish 1011, not only can improve the cleaning efficiency to water dish 1011 and reduce the manual cleaning cost, and indirect evaporation cooling equipment 101 still can normally work in the cleaning process, improve the heat exchange efficiency of indirect evaporation cooling equipment 101, thereby improve the effect to the data center cooling.

In one embodiment, the first controller 103 is further configured to control the water replenishing pump 107 to stop at a second time after the water replenishing pump 107 is started, wherein the second time is the sum of the first time and a second preset time period.

That is to say after the time is predetermine at control moisturizing pump 107 start-up second, steerable moisturizing pump 107 stops, can reduce water waste on the one hand, and on the other hand can avoid moisturizing pump 107 duration too long, improves moisturizing pump 107's life to and can improve the moisturizing security. The second preset time period may be set according to an actual requirement, and in this embodiment, a specific value of the second preset time period is not limited, for example, the second preset time period may be 30 seconds.

As shown in fig. 3 and 4, in an embodiment, the drainage system further includes a first control valve 110, and the water outlet end of the make-up water pump 107 is connected to the first spraying device 108 through the first control valve 110;

the first controller 103 is electrically connected to the first control valve 110, and the first controller 103 is further configured to control opening and closing of the first control valve 110.

A first control valve 110 is arranged between the water replenishing pump 107 and the first spraying device 108, when the first control valve 110 is opened, the water replenishing pump 107 is communicated with the first spraying device 108, when the first control valve 110 is closed, a water flow channel between the water replenishing pump 107 and the first spraying device 108 is blocked by the first control valve 110, and water discharged by the water replenishing pump 107 is blocked by the first control valve 110 and cannot reach the first spraying device 108. The first controller 103 controls the water replenishing pump 107 to start and controls the first control valve 110 to open at the first time, and water is supplied to the first spraying device 108 through the water replenishing pump 107 and the first control valve 110. The first control valve 110 may be a first solenoid valve.

In this embodiment, a first control valve 110 is further provided, and the water discharged from the water replenishing pump 107 can be transferred or blocked by the first control valve 110, so that the water discharged from the water replenishing pump 107 is transferred to the first spraying device 108 or the water flow from the water replenishing pump 107 to the first spraying device 108 is blocked, and thus, the flexibility of cleaning control of the water tray 1011 can be improved.

In one embodiment, the drainage system further comprises a second control valve 111 and a second spraying device 112, the water outlet end of the water replenishing pump 107 is further connected with the second spraying device 112 through the second control valve 111, and the second spraying device 112 is located in the space where the indirect evaporative cooling equipment 101 is located;

the first controller 103 is electrically connected to the second control valve 111, and the first controller 103 is further configured to control opening and closing of the second control valve 111.

A second control valve 111 is provided between the water replenishing pump 107 and the second shower device 112, when the second control valve 111 is opened, the water replenishing pump 107 and the second shower device 112 are communicated with each other, and when the second control valve 111 is closed, a water flow passage between the water replenishing pump 107 and the second shower device 112 is blocked by the second control valve 111, and water discharged from the water replenishing pump 107 is blocked by the second control valve 111 and cannot reach the second shower device 112. The first controller 103 can control the second control valve 111 to be opened, the water replenishing pump 107 can distribute at least part of water to the second spraying device 112 to supply water for the second spraying device 112, spraying is carried out through the second spraying device 112, the space where the indirect evaporative cooling equipment 101 is located is cooled, the temperature in a data center can be reduced, the ambient temperature of the indirect evaporative cooling equipment 101 is improved, and the operation reliability and stability of the equipment are improved. The first controller 103 can also control the second control valve 111 to close, so that the water flow channel between the water replenishing pump 107 and the second spraying device 112 is blocked by the second control valve 111, the second spraying device 112 stops spraying, the service life of the second spraying device 112 can be prolonged, and the like.

In this embodiment, a second control valve 111 is further provided, and the water discharged from the water replenishing pump 107 can be transferred or blocked by the second control valve 111, so that the water discharged from the water replenishing pump 107 is transferred to the second spraying device 112 or the water flow from the water replenishing pump 107 to the second spraying device 112 is blocked, and thus, the flexibility of spraying control on the second spraying device 112 can be improved.

As shown in fig. 3 and 4, in one embodiment, the drainage system further includes a third control valve 113 and a fourth control valve 114, the water inlet of the drainage valve 104 is connected to the water outlet of the water tray 1011 through the third control valve 113, and the water outlet of the drainage valve 104 is further connected to the fourth control valve 114;

the first controller 103 is electrically connected to the third control valve 113 and the fourth control valve 114, respectively, and the first controller 103 is further configured to control opening and closing of the third control valve 113 and the fourth control valve 114.

The third control valve 113 is located between the water outlet of the water disk 1011 and the water inlet of the drain valve 104, and through the arrangement of the third control valve 113, better guarantee is provided for the drain control. And a fourth control valve 114 is provided, in which case, when it is opened, the water at the outlet of the drain valve 104 can be at least partially diverted to the fourth control valve 114 and discharged through the fourth control valve 114. The inlet of the fourth control valve 114 is connected to the outlet of the drain valve 104, the water flowing in from the inlet of the fourth control valve 114 is discharged through the outlet of the fourth control valve 114, the outlet of the fourth control valve 114 can be connected to a pipe which can be connected to the outside, even to the water reservoir 109, etc. In addition, the first controller 103 may control the drain pump 102 to be started and the third control valve 113 to be opened, regardless of whether the drain signal transmitted from the second controller or the water level sensing signal is received. In the case of controlling the stop of the drain pump 102, the third control valve 113 may also be controlled to be closed. The opening and closing of the fourth control valve 114 can be controlled according to the requirement, for example, in the process of starting the drain pump 102 for draining, if the draining speed needs to be further increased, the fourth control valve 114 can be controlled to be opened, and on the basis of draining by the drain pump 102, draining is performed through the conducted fourth control valve 114, so that the draining efficiency is improved.

In this embodiment, the fourth control valve 114 is provided to provide more drain paths and improve flexibility of draining, and the third control valve 113 is provided to ensure safety of draining between the drain valve 104 and the drain port of the water pan 1011.

In one embodiment, the drainage system may further include an overflow pipe 115, and the overflow pipe 115 is communicated with an overflow outlet on the side wall of the water pan 1011, so that in case that the height of the water in the water pan 1011 exceeds the height of the overflow outlet, the water in the water pan 1011 having a height exceeding the overflow outlet flows into the overflow pipe 115 through the overflow outlet and is discharged, which may reduce the occurrence of the water in the water pan 1011 overflowing through the opening of the water pan 1011. It should be noted that the water inlet of the overflow water pipe 115 is communicated with the overflow outlet of the side wall of the water pan 1011, the water outlet of the overflow water pipe 115 is communicated with the water reservoir 109, and the water flowing out through the overflow water pipe 115 flows into the water reservoir 109, so that the water can be reused and the water resource can be saved.

In addition, the water outlet of the water disc 1011 can be arranged at the bottom of the water disc 1011, the opening of the water disc 1011 is opposite to one side of the heat exchanger 1012 of the indirect evaporative cooling equipment 101, the third spraying device 116 is arranged at the other side of the heat exchanger 1012, the third spraying device 116 is connected with the spraying pump 117, the spraying pump 117 is arranged in the water disc 1011, the spraying pump 117 is started to pump water from the water disc 1011 and transmit the water to the third spraying device 116, the third spraying device 116 sprays water at the other side of the heat exchanger 1012, and the sprayed water passes through the heat exchanger 1012 and flows out from one side of the heat exchanger 1012 to enter the water disc 1011. As an example, the water inlet of the spray pump 117 is provided with a filter, which can filter the water entering the third spray device 116, reduce impurities in the water, thereby reducing pollution of the spray to the heat exchanger 1012, and the like, and the third spray device 116 may be a third spray head, and the like.

The drainage process of the drainage system is described in detail below with reference to a specific embodiment.

At present, more and more indirect evaporative cooling equipment 101 are used in a data center, a water outlet of a water disk 1011 of the indirect evaporative cooling equipment 101 and a filter arranged on a spray pump 117 in the water disk 1011 are easy to block, the spray pump 117 is easy to work under high load and wear, faults are easy to occur, the compressor mode is easy to start frequently, and electric energy is wasted. The air-air heat exchanger 1012 and the water disc 1011 of the existing indirect evaporative cooling equipment 101 are seriously scaled, the heat exchange efficiency is reduced, the existing drainage mode of the indirect evaporative cooling equipment 101 is to drain water under natural gravity, impurities and dirt at the bottom of the water disc 1011 are not completely drained, the drainage speed is low, the impurities and new water are secondarily mixed after the water is supplied to the water disc 1011, more water resources are wasted, the space of the water disc 1011 is small, manual cleaning of the impurities, sludge and the like is inconvenient, the manual cleaning of the water disc 1011 needs IDEC to stop working, the manual cleaning of the water disc 1011 has potential safety hazards under the condition that the indirect evaporative cooling equipment 101 runs, great troubles are brought to operation and maintenance work, the stable running of a machine room can be influenced, the operation and maintenance resources are occupied to be great, the service life of the equipment is influenced, and the equipment utilization rate is reduced. The drainage system provided by the embodiment of the disclosure can improve drainage efficiency, does not need to manually clean the water disc 1011, improves cleaning efficiency and reduces manual cleaning cost, and the indirect evaporative cooling equipment 101 can normally operate.

The drainage system provided by the disclosure can shorten the drainage time of the indirect evaporative cooling equipment 101 and the cleaning time of the water disk 1011, and improve the running time of the wet working condition mode. The water trays 1011 of the indirect evaporative cooling apparatuses 101 may be cleaned simultaneously, that is, the number of the indirect evaporative cooling apparatuses 101 may be multiple, correspondingly, the number of the drain valves 104, the number of the water trays 1011, the number of the third control valves 113, the number of the fourth control valves 114, the number of the first control valves 110, and the number of the first spraying devices 108 may all be multiple, the drain valves 104, the water trays 1011, the third control valves 113, the fourth control valves 114, the first control valves 110, and the first spraying devices 108 all correspond to the indirect evaporative cooling apparatuses 101, and the number of the drain valves 104, the water trays 1011, the third control valves 113, the fourth control valves 114, the first control valves 110, and the first spraying devices 108 may be the same as the number of the indirect evaporative cooling apparatuses 101, respectively, as shown in fig. 5. A plurality of water trays 1011 connect water storage tank 105 through corresponding drain valve 104, drain pump 102 intercommunication water storage tank 105, arbitrary drain valve 104 is opened, the water of corresponding water tray 1011 gets into water storage tank 105 through this drain valve 104, if the drain pump 102 starts, can drain to water storage tank 105 through drain pump 102, thereby realize draining this water tray 1011, so, can realize carrying out the drainage to the water tray 1011 of a plurality of indirect evaporative cooling equipment 101 through drain pump 102, as shown in fig. 5, it is two to use the quantity of indirect evaporative cooling equipment 101 as an example. The principle process of the drainage control of the drainage system disclosed by the invention is as follows:

in one embodiment, in the case that the first controller 103 (which may be a controller disposed in a control cabinet) receives a drain signal sent after the second controller of the indirect evaporative cooling apparatus 101 controls the drain valve 104 to open, the third preset time period (which may be set according to practical situations, for example, 10 seconds) is delayed, the electromagnetic drain valve 106 is closed and the drain pump 102 is started, that is, the electromagnetic drain valve 106 is closed and the drain pump 102 is started at the first target time (the sum of the time when the drain signal is received and the third preset time period), the drain pump 102 is communicated with the drain port of the water tray 1011, and the water in the water tray 1011 of the indirect evaporative cooling apparatus 101 is quickly sucked by the drain pump 102. After the drainage pump 102 is started to drain, in the case that the drainage signal sent by the second controller is not received (it can be understood that the drainage signal disappears), delaying for a fourth preset time (which can be set according to practical situations and can be 10 seconds, for example), controlling the drainage pump 102 to stop working and opening the electromagnetic exhaust valve 106, and it can be understood that, at the second target time (the sum of the time when the drainage signal is not received and the fourth preset time), controlling the drainage pump 102 to stop working and opening the electromagnetic exhaust valve 106 to exhaust, namely, stopping the drainage of the drainage pump 102. And in the next time of receiving the drainage signal again, restarting the drainage pump 102 and closing the electromagnetic exhaust valve 106, so that the circular detection and control are realized, and the circular drainage of the water disk 1011 is realized.

In another embodiment, a water storage tank 105 is provided, and when the first controller 103 receives a water level sensing signal sent by a water level sensor in the water storage tank 105 after detecting the water level (i.e. indicating that water is in the water storage tank 105) and the pressure in the water storage tank 105 is not negative (the drain valve 104 is opened), the electromagnetic exhaust valve 106 is closed and the drain pump 102 is started after a fifth preset time period (which may be set according to practical situations, for example, 10 seconds) is delayed, that is, the electromagnetic exhaust valve 106 is closed and the drain pump 102 is started at a third target time period (the sum of the time when the water level sensing signal is received and the fifth preset time period), the drain pump 102 is communicated with the drain port of the water tray 1011, and the water in the water tray 1011 of the indirect evaporative cooling apparatus 101 is rapidly sucked by the drain pump 102. After the drainage pump 102 is started to drain, in a case where the pressure monitored by the pressure sensor in the water storage tank 105 is negative pressure or the water level sensor detects no water (i.e., the water level sensor does not detect the water level), delaying for a sixth preset time period (which may be set according to practical situations, for example, 10 seconds), controlling the drainage pump 102 to stop operating and opening the electromagnetic drainage valve 106 to drain, and it can be understood that, at a fourth target time period (the sum of the time when the pressure is detected to be negative pressure or the time when the water level sensing signal is not received and the sixth preset time period), controlling the drainage pump 102 to stop operating and opening the electromagnetic drainage valve 106 to drain, i.e., stopping the drainage of the drainage pump 102. And when a water level sensing signal sent after the water level sensor in the water storage tank 105 detects the water level is received next time and the pressure in the water storage tank 105 is not negative pressure, the drainage pump 102 is restarted and the electromagnetic exhaust valve 106 is closed, so that the circular drainage of the water disc 1011 is realized through the circular detection and control.

Alternatively, the reservoir 109 may be an outdoor settling water reservoir, the waste water recovered in the water pan 1011 is discharged to the reservoir 109 (a plurality of independent reservoirs 109 may be provided for recycling), the settled water in the reservoir 109 may be filtered, for example, a sewage treatment device 118 may be provided, the sewage treatment device 118 may be connected to the reservoir 109, the water in the reservoir 109 is filtered by the sewage treatment device 118, and the indirect evaporative cooling device 101 may be supplied by the first water pump for reuse in a case where the filtered water conductivity is lower than a first preset value (which may be set according to practical circumstances, for example, 500us/cm, that is, 500 micro siemens/cm). Can still set up first water pump or first water pump and water receiver 109 intercommunication in water receiver 109, the delivery port through first water pump passes through raceway and water dish 1011 intercommunication, under the condition that the water conductivity in water receiver 109 is less than first default, can open first water pump, extract water from water receiver 109, carry water dish 1011, spray pump 117 among the water dish 1011 can spray the water transfer to third spray set 116 among the water dish 1011, for the cooling of heat exchanger 1012, heat exchange efficiency is improved. When the conductivity of the filtered water in the water reservoir 109 is greater than a second predetermined value (which may be set according to actual conditions, for example, 800 us/cm), the filtered water is delivered to the sewage treatment device 118 by a second water pump (which may be set in the water reservoir 109 or the second water pump is communicated with the water reservoir 109) and is filtered for secondary reuse, and it can be understood that the second water pump is communicated with the sewage treatment device 118, and the system can effectively play a role of water saving.

As an example, the drain system further includes a fifth control valve 119, the sewage treatment apparatus 118 may be connected to the water reservoir 109 through the fifth control valve 119, the sewage treatment apparatus 118 may be communicated with the water reservoir 109 through the fifth control valve 119 when the fifth control valve 119 is opened, and a water flow path between the water reservoir 109 and the sewage treatment apparatus 118 is blocked by the fifth control valve 119 when the fifth control valve 119 is closed. I.e. the water flow path between the reservoir 109 and the sewage treatment apparatus 118 is controlled by the fifth control valve 119. If the drainage system includes the second water pump as described above, the fifth control valve 119 may be located between the sewage treatment apparatus 118 and the second water pump, and when the fifth control valve 119 is opened, the water outlet side of the second water pump communicates with the sewage treatment apparatus 118 through the fifth control valve 119, and the water inlet side of the second water pump communicates with the water reservoir 109, so that the sewage treatment apparatus 118 may communicate with the water reservoir 109 through the opened fifth control valve 119 and the second water pump.

The water is drained through the drainage system of the embodiment, the heat exchange efficiency of the heat exchanger 1012 of the indirect evaporative cooling equipment 101 of the data center can be improved, the water in the water tray 1011 of the indirect evaporative cooling equipment 101 is quickly drained through the drainage pump 102, the drainage time of the indirect evaporative cooling equipment 101 is shortened, the water tray 1011 is quickly cleaned through the high-pressure water replenishing pump 107, the first control valve 110, a pipeline and the first spraying device 108, the wet working condition running time of the indirect evaporative cooling equipment 101 is prolonged, the maintenance time can be shortened, the heat exchange efficiency of the heat exchanger 1012 is improved, the high-load running and abrasion of the spraying pump 117 caused by frequent blockage of the water inlet filter and the spraying device can be reduced, the frequent starting of the compressor mode is reduced, and the unit power consumption of the indirect evaporative cooling equipment 101 is reduced to realize energy conservation. The impurities are filtered by the water storage device 109 and then are recycled to meet the water-saving requirement. The drainage system is low in cost and high in drainage efficiency, the problems that air impurities are more, water hardness is high and the like can be effectively solved, the workload and the working strength of operation and maintenance personnel are reduced, the operation and maintenance efficiency and quality are improved, and the safe and stable operation of a data center is guaranteed.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel, sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.

The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. A drainage system comprising an indirect evaporative cooling apparatus, a drain pump, and a first controller, wherein:

the first controller is electrically connected with the drainage pump and is used for controlling the starting and stopping of the drainage pump;

the drainage system also comprises a drainage valve, the drainage valve is connected with a drainage outlet of the water tray through the drainage valve, wherein a water inlet of the drainage valve is connected with the drainage outlet of the water tray, and the drainage valve is communicated with a water outlet of the drainage valve; when the drainage system is in a first operation state, the drainage valve is opened and the drainage pump is started to drain the water tray through the drainage pump;

the indirect evaporative cooling equipment is also provided with a second controller;

the second controller is electrically connected with the drain valve and is used for controlling the opening and closing of the drain valve; controlling the drain valve to be opened based on the second controller and sending a drain signal to the first controller based on the second controller to open the drain pump when detecting that the conductivity of the water in the water tray is greater than a preset conductivity;

the drainage system also comprises a water replenishing pump, a second control valve and a second spraying device, wherein the water outlet end of the water replenishing pump is also connected with the second spraying device through the second control valve, and the second spraying device is positioned in the space where the indirect evaporative cooling equipment is positioned; the second spraying device is positioned outside the indirect evaporative cooling equipment, and is used for cooling the space where the indirect evaporative cooling equipment is positioned under the condition that the second spraying device is in a spraying state;

the drainage system also comprises a first control valve, and the water outlet end of the water replenishing pump is connected with a first spraying device through the first control valve;

the first controller is electrically connected with the first control valve and is also used for controlling the opening and closing of the first control valve;

the water drainage system also comprises a third control valve and a fourth control valve, the water inlet of the water drainage valve is connected with the water outlet of the water tray through the third control valve, and the water outlet of the water drainage valve is also connected with the fourth control valve;

the first controller is electrically connected with the third control valve and the fourth control valve respectively, and is further used for controlling the opening and closing of the third control valve and the fourth control valve.

2. The drain system of claim 1, the first controller configured to control the drain pump to start upon receiving a drain signal sent by the second controller, wherein the second controller sends the drain signal after controlling the drain valve to open.

3. The drain system of claim 1, wherein the drain system further comprises a water storage tank and a water level sensor, the water level sensor is disposed in the water storage tank, the first controller is electrically connected to the water level sensor, and the drain pump is in communication with the water outlet of the drain valve through the water storage tank;

the water level sensor is used for detecting the water level in the water storage tank and sending a water level sensing signal to the first controller under the condition that the water level is detected in the water storage tank;

the first controller is used for controlling the drainage pump to start under the condition of receiving a water level sensing signal sent by the water level sensor.

4. The drain system of claim 3, wherein the drain system further comprises a pressure sensor disposed within the reservoir, the first controller being electrically connected to the pressure sensor;

the pressure sensor is used for detecting the pressure in the water storage tank and sending the detected pressure to the first controller;

the first controller is used for controlling the drainage pump to stop if the pressure is negative pressure or a water level sensing signal sent by the water level sensor is not received after controlling the drainage pump to start.

5. The drain system of claim 3, further comprising an electromagnetic vent valve disposed in the reservoir;

the first controller is electrically connected with the electromagnetic exhaust valve and is also used for controlling the opening and closing of the electromagnetic exhaust valve;

and under the conditions that the drain valve is closed, the electromagnetic exhaust valve is closed and the drain pump is closed, a closed space is formed in the water storage tank.

6. The drain system according to claim 1, wherein the water inlet end of the water replenishing pump is in communication with a water reservoir, the water outlet end of the water draining pump is in communication with the water reservoir, the water inlet end of the water draining pump is in communication with the water outlet of the water draining valve, and the first spraying device is disposed in the water pan;

the first controller is electrically connected with the water replenishing pump, is also used for controlling the starting and stopping of the water replenishing pump, and controls the starting of the water replenishing pump at the first time, the water is supplied to the first spraying device through the water replenishing pump, and the first time is the sum of the starting time of the drainage pump and the first preset time.

7. The drain system of claim 6, wherein the first controller is electrically connected to the second control valve, the first controller further configured to control the opening and closing of the second control valve.

8. The drainage system of claim 6, wherein the first controller is further configured to control the water make-up pump to stop at a second time after the water make-up pump is started, the second time being a sum of the first time and a second preset time period.