CN112857132B - Cooling tower, cooling tower detection control method, device, equipment and storage medium - Google Patents
Cooling tower, cooling tower detection control method, device, equipment and storage medium Download PDFInfo
- Publication number
- CN112857132B CN112857132B CN202110020600.4A CN202110020600A CN112857132B CN 112857132 B CN112857132 B CN 112857132B CN 202110020600 A CN202110020600 A CN 202110020600A CN 112857132 B CN112857132 B CN 112857132B
- Authority
- CN
- China
- Prior art keywords
- cooling
- tower
- temperature
- cooling tower
- detection module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The application provides a cooling tower, a cooling tower detection control method, a cooling tower detection control device, cooling tower detection control equipment and a storage medium. Among this technical scheme, when outdoor wet bulb temperature was in predetermineeing the temperature zone section, control detection module work was in the lower tower temperature of setting for the frequency and obtaining the time of predetermineeing that lower tower temperature sensor detected, and it can accurate control water-cooling chilled water system's operating mode switch, when guaranteeing system stability, has reduced the system power consumption.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a cooling tower, a cooling tower detection control method, a cooling tower detection control device, cooling tower detection control equipment and a storage medium.
Background
In the occasion that needs refrigeration throughout the year, adopt comparatively efficient water-cooling chilled water system usually, in order to reach energy-conserving purpose, this water-cooling chilled water system can set up three kinds of different operating modes (behavior) according to the difference of outdoor temperature, promptly electric refrigeration, half free cooling, complete free cooling.
In the prior art, for switching among three working conditions of a water-cooling chilled water system, the working conditions of the water-cooling chilled water system are usually switched according to the change of the outdoor wet bulb temperature and the lower tower water temperature of a cooling tower. Specifically, when the water temperature of the tower can meet the requirement under the presumption of the outdoor wet bulb temperature and the refrigeration parameters of the cooling tower, the full-frequency operation of a fan of the cooling tower is controlled, and the working condition is switched when the water temperature of the tower meets the requirement; if the requirement can not be met, the original state is still maintained. The method can cause that the water temperature of the lower tower is too low, so that a cold machine of the water-cooling chilled water system cannot normally operate, and the system stability is poor.
However, in the water-cooled chilled water system, in order to ensure the normal operation of the water-cooled chilled water system, the outdoor wet bulb temperature is generally reduced to ensure that the probability of switching to the next state after the water-cooled chilled water system is in test operation is increased to 100%. However, since the lower tower water temperature is affected by various conditions such as load, outdoor wet bulb temperature, outdoor wind speed, etc., in order to ensure that the switching probability is 100%, the outdoor wet bulb temperature setting value must be lowered by a large amount, so that the maximum capacity of the system cannot be exerted, and the energy consumption of the system is large.
Disclosure of Invention
The application provides a cooling tower, a cooling tower detection control method, a cooling tower detection control device, cooling tower detection control equipment and a storage medium, and aims to solve the problems of poor system stability and high energy consumption in working condition switching of an existing water cooling and freezing water system.
In a first aspect, an embodiment of the present application provides a cooling tower, including:
the cooling system comprises a plurality of cooling modules, a controller and a lower tower temperature sensor connected with the controller;
each cooling module comprises an upper tower valve, a lower tower valve and a cooling tower fan;
the cooling modules are connected with the upper tower valve of each cooling module through an upper tower main pipe and connected with the lower tower valve of each cooling module through a lower tower main pipe;
the cooling tower fan in each cooling module is connected with the controller, and the controller is used for controlling the working frequency of each cooling tower fan;
the lower tower temperature sensor is arranged between a lower tower valve of the detection module and the lower tower main pipe, wherein the detection module is any one of the plurality of cooling modules.
In one possible design of the first aspect, the cooling tower further includes:
and the total temperature sensor is arranged at an outlet of the lower tower main pipe and used for detecting the temperature in the lower tower main pipe of the cooling tower.
In a second aspect, an embodiment of the present application provides a cooling tower detection control method, which is applied to the controller in the cooling tower in the first aspect, where the method includes:
when the outdoor wet bulb temperature is in a preset temperature range, acquiring a set frequency, wherein the set frequency is determined according to the performance of a cooling tower fan of a detection module in the cooling tower;
controlling a cooling tower fan of the detection module to work at the set frequency for a preset time;
and acquiring the lower tower temperature within the preset time length detected by a lower tower temperature sensor of the detection module.
In one possible design of the second aspect, the method further includes:
and if the lower tower temperature reaches a preset temperature and the time length for stabilizing the preset temperature is longer than a set time length, controlling fans of cooling towers of other cooling modules in the cooling tower except the detection module to work at the set frequency.
In another possible design of the second aspect, the method further includes:
and if the lower tower temperature does not reach the preset temperature and/or the stabilization time of the lower tower temperature reaching the preset temperature is less than or equal to the set time, controlling a cooling tower fan of the detection module to finish working.
In a third aspect, an embodiment of the present application provides a cooling tower detection control apparatus, which is applied to the controller in the cooling tower in the first aspect, and the apparatus includes:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring a set frequency when the outdoor wet bulb temperature is in a preset temperature range, and the set frequency is determined according to the performance of a cooling tower fan of the detection module in the cooling tower;
the control module is used for controlling the cooling tower fan of the detection module to work at the set frequency for a preset time;
the acquisition module is further used for acquiring the lower tower temperature within the preset time length detected by the lower tower temperature sensor of the detection module.
In a possible design of the third aspect, the control module is further configured to control cooling tower fans of cooling modules other than the detection module in the cooling tower to operate at the set frequency when the lower tower temperature reaches a preset temperature and a time period during which the preset temperature is stable is longer than a preset time period.
In another possible design of the third aspect, the control module is further configured to control the cooling tower fan of the detection module to end working when the lower tower temperature does not reach a preset temperature, and/or when a stabilization duration of the lower tower temperature reaching the preset temperature is less than or equal to a preset duration.
In a fourth aspect, an embodiment of the present application provides a control apparatus, including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the electronic device to perform the method of the second aspect and possible designs.
In a fifth aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon computer-executable instructions, which when executed by a processor, are configured to implement a method according to the second aspect and possible designs.
In a sixth aspect, embodiments of the present application provide a computer program for performing the method according to the second aspect and possible designs when the computer program is executed by a processor.
In a seventh aspect, embodiments of the present application provide a computer program product, including a computer program, for implementing the method according to the second aspect and various possible designs.
In an eighth aspect, an embodiment of the present application provides a chip, including: a processing module capable of performing the method of the second aspect and each of the possible designs is connected to the communication interface.
Further, the chip further includes a storage module (e.g., a memory) for storing instructions, the processing module is configured to execute the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the method according to the second aspect and possible designs.
According to the cooling tower, the cooling tower detection control method, the cooling tower detection control device, the cooling tower detection control equipment and the storage medium, when the outdoor wet bulb temperature is in the preset temperature zone, the set frequency is obtained, the cooling tower fan of the detection module is controlled to work at the set frequency and continuously has the preset time length, and finally the lower tower temperature detected by the lower tower temperature sensor of the detection module within the preset time length is obtained. In the technical scheme, when the outdoor wet bulb temperature is in the preset temperature zone, the control detection module works at the set frequency and acquires the lower tower temperature within the preset time detected by the lower tower temperature sensor, the working condition switching of the water-cooling chilled water system can be accurately controlled, and the energy consumption of the system is reduced while the stability of the system is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a cooling tower provided in an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a cooling tower inspection control method according to a first embodiment of the present disclosure;
FIG. 3 is a schematic flowchart illustrating a second embodiment of a cooling tower inspection control method according to the present application;
FIG. 4 is a schematic structural diagram of an embodiment of a cooling tower detection control device provided by the present application;
fig. 5 is a schematic structural diagram of a control device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of this application and in the foregoing drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
A cooling tower is an apparatus for dissipating heat to the air by using evaporation and convection of spray water. In general, for most open cooling towers, water supplied from external equipment is sprayed out from a liquid distributor at the upper part of the cooling tower, and then exchanges heat with air from top to bottom through the surface of a filler, and after heat is dissipated and cooled to the air through evaporation and convection, the water falls into a water collecting tank at the bottom of the tower, and then is sent to the external equipment to perform a cooling task. For a counter-current cooling tower, air flows from bottom to top in a counter-current direction with spray water. For a cross-flow cooling tower, air enters the cooling tower laterally and flows across the spray water. The air flow can be natural ventilation realized by drawing out wind through the cooling tower, and mechanical ventilation can also be realized by driving of the fan. For a closed cooling tower, the fluid to be cooled can be water or other fluids, and flows in the tower in a closed manner, and the spray water is used as an intermediate heat exchange medium.
To the problem that the system stability is poor, the power consumption is big that exists when switching between the operating mode among the prior art water-cooling frozen water system, this application technical scheme's technical concept process as follows: the cooling capacity of the cooling tower at the current environmental temperature is detected by controlling the fan of one cooling module in the plurality of cooling modules of the cooling tower, so that the cooling capacity of the whole cooling tower at the current environmental temperature can be determined, the stable and normal work of the water-cooling chilled water system after switching between different working conditions can be ensured, and the cooling capacity of the cooling tower at the current environmental temperature is detected by a detection means instead of being inferred by parameters such as outdoor wet bulb temperature, cooling tower heat exchange approximation degree and the like, the cooling capacity of the cooling tower is fully utilized, the running time of complete free cooling and semi-free cooling can be prolonged, and the purpose of energy conservation is achieved.
Based on the technical concept process, the embodiment of the application provides a cooling tower, which can comprise a plurality of cooling modules, a controller and a lower tower temperature sensor connected with the controller, wherein one detection module is determined from the plurality of cooling modules, the lower tower temperature sensor is arranged between a lower tower valve of the detection module and a lower tower main pipe, and the controller is used for controlling the working frequency of a cooling tower fan of each cooling module. In the application, the refrigerating capacity of the cooling tower under the current environment is obtained by the detection module, so that the switching between the working conditions is more accurate, and the stability of the switched system can be ensured. In addition, because of the operating mode switches accurately, consequently, can carry out the switching of different operating modes when the condition that ambient temperature allows, abundant utilization the refrigeration capacity of cooling tower, can prolong complete free cooling and half free cooling's operating time to reach energy-conserving purpose, wherein, the refrigerator need be opened to electric refrigeration, takes the most power.
The technical solutions and technical effects that can be achieved by the present application are described in detail below with specific embodiments. It should be noted that the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 1 is a schematic structural diagram of a cooling tower according to an embodiment of the present disclosure. As shown in fig. 1, a cooling tower provided in an embodiment of the present application may include: a plurality of cooling modules 100, a controller 101, and a lower tower temperature sensor 102 coupled to the controller 101.
Each cooling module comprises an upper tower valve, a lower tower valve and a cooling tower fan;
the cooling modules 100 are connected with the upper tower valve of each cooling module through an upper tower main pipe 103 and connected with the lower tower valve of each cooling module through a lower tower main pipe 104;
the cooling tower fan in each cooling module is connected with a controller 101, and the controller 101 is used for controlling the working frequency of each cooling tower fan;
the lower column temperature sensor 102 is disposed between a lower column valve of a detection module 1001 and the lower column manifold 104, wherein the detection module 1001 is any one of the plurality of cooling modules 100.
In the embodiments of the present application, the number of cooling modules included in the cooling tower may be 2 or more than 2, and the embodiments of the present application do not limit the number. In the cooling tower shown in fig. 1, the number of cooling modules is explained by taking 4 as an example.
As shown in fig. 1, since each cooling module is connected to the upper tower manifold 103 through an upper tower valve and connected to the lower tower manifold 104 through a lower tower valve, the liquid in the upper tower manifold 103 can be controlled to flow into the lower tower manifold 104 through some or all of the cooling modules by controlling the opening and closing of the upper tower valve and the lower tower valve of each cooling module, so that the liquid flowing through the cooling modules is cooled.
Referring to fig. 1, a cooling tower fan is disposed above each cooling module, and the operating frequency of each cooling module, that is, the operating mode of each cooling module, can be controlled by the cooling tower fan.
In the embodiment of the present application, by selecting any one of the plurality of cooling modules 100 included in the cooling tower as the detection module 1001, a temperature sensor is disposed on the lower tower branch pipe of the detection module 1001, so as to obtain the real-time temperature of the liquid in the detection module 1001 when the controller 101 controls the detection module 1001 to operate at the set frequency.
In practical application, when the ambient temperature of the water-cooling chilled water system meets the preset switching temperature of the working condition, the controller 101 can control the operation mode of each cooling module (including the detection module and the non-detection module), specifically, the block cooling tower fan of the non-detection module is controlled to perform variable frequency operation according to the normal set tower temperature, and the cooling tower fan of the detection module 1001 is controlled to operate according to the detection frequency of target switching.
Optionally, the cooling tower fan of each cooling module is a variable-frequency running fan, and the frequency range of the variable-frequency running fan is generally 25Hz to 50 Hz. Under the normal condition, the detection frequency of the fan of the cooling tower in the detection module 1001 can be set to be 45Hz (or other set values), at this time, the difference between the set value and the full frequency of the fan is 5Hz, and a margin can be left for the refrigerating capacity of the cooling tower, so that frequent switching of the water-cooling chilled water system between different working conditions due to fluctuation of outdoor temperature is avoided, and instability of the system is avoided.
It is understood that the detection frequency of the cooling tower fan in the detection module 1001 may be set to other values, such as 40hz,42hz,48hz, etc. The detection frequency of the cooling tower fan actually set in the detection module 1001 is not limited in the embodiment of the present application, and may be determined according to the performance of the cooling tower fan or other conditions, which is not described herein again.
In practical applications, the cooling module may also be referred to as a cooling room, and the detection module 1001 may also be referred to as a detection room, and the present embodiment does not limit the specific name of each detection module 1001.
The cooling tower that this application embodiment provided, through including a plurality of cooling module, controller, and with lower tower temperature sensor that the controller is connected, through following setting: the technical scheme includes that the plurality of cooling modules are connected with the upper tower valve of each cooling module through the upper tower header pipe respectively, the plurality of cooling modules are connected with the lower tower valve of each cooling module through the lower tower header pipe respectively, the cooling tower fans in each cooling module are connected with the controller, the working frequency of each cooling tower fan is controlled through the controller, one module is selected from the plurality of cooling modules as a detection module, and the lower tower temperature sensor is arranged between the lower tower valve of the detection module and the lower tower header pipe.
Further, in the embodiment of the present application, as shown in fig. 1, the cooling tower further includes: and a total temperature sensor 105 connected to the controller 101, the total temperature sensor 105 being provided at an outlet of the lower tower manifold 104 for detecting a temperature in the lower tower manifold 104 of the cooling tower.
For example, after the total temperature sensor 105 detects the temperature in the lower tower main pipe 104 of the cooling tower, on one hand, the temperature can be compared with the temperature detected by the lower tower temperature sensor 102 to determine the cooling capacity of the detecting module 1001 and other cooling modules, and on the other hand, whether the operating state of the detecting module 1001 is in the steady state can be more accurately determined according to the temperature detected by the lower tower temperature sensor 102 and the temperature detected by the total temperature sensor 105.
It should be noted that fig. 1 only shows the connection between the controller 101 and the cooling tower fan of each cooling module in the cooling tower, and the connection between the controller 101 and the lower tower temperature sensor 102. It will be understood that the controller 101 is also connected to the various valves in fig. 1 (the lower and upper tower valves of the cooling module), the total temperature sensor, etc., all of which are not shown in fig. 1. In addition, all the valves in fig. 1 may be provided as electrically operated valves so that the controller performs automatic control.
Based on the structure of the cooling tower shown in fig. 1, the embodiment of the present application further provides a cooling tower detection control method, which can be applied to the controller in the cooling tower shown in fig. 1, and the detection process of the lower tower temperature of the cooling tower is implemented by the controller, and the following cooling tower detection control method is explained through a specific embodiment.
Fig. 2 is a schematic flowchart of a first embodiment of a cooling tower detection control method provided by the present application. The method is explained with a controller in the cooling tower shown in fig. 1 as an execution subject. As shown in fig. 2, the cooling tower detection control method may include the steps of:
s201, when the outdoor wet bulb temperature is in a preset temperature range, acquiring a set frequency, wherein the set frequency is determined according to the performance of a cooling tower fan of a detection module in a cooling tower.
In the embodiment of the application, before the lower tower temperature of the cooling tower is detected, the preset temperature section of detection can be firstly determined, and only when the outdoor wet bulb temperature is in the preset temperature section, the semi-free cooling working condition can be utilized, because when the outdoor wet bulb temperature is lower than the lowest temperature of the preset temperature section, the free cooling working condition can be adopted, and when the outdoor wet bulb temperature is higher than the highest temperature of the preset temperature section, the electric refrigeration working condition is directly utilized. Therefore, the three working conditions of the water-cooling chilled water system are switched within a specific outdoor wet bulb temperature zone, namely a preset temperature zone.
Therefore, before the detection module of the cooling tower is used for detecting the refrigerating capacity of the cooling tower, the outdoor wet bulb temperature is required to be obtained firstly, whether the outdoor wet bulb temperature is in the preset temperature section or not is judged, and only when the outdoor wet bulb temperature is in the preset temperature section, the switching between the semi-free cooling working condition and the free cooling working condition and/or the switching between the semi-free cooling working condition and the electric cooling working condition exist.
Specifically, the critical temperature of the water temperature of the lower tower of the cooling tower during switching among different working conditions can be determined according to the performance of the plate heat exchanger of the cooling tower, the temperature and the flow of the water supplied and returned from the freezing side, the flow of the cooling side and other factors, and then the required outdoor wet bulb temperature is calculated or simulated according to the type selection parameters of the cooling tower, different load ratios and different critical temperatures of the water temperature of the lower tower.
Illustratively, when the outdoor wet bulb temperature is determined to be in a preset temperature range and at a critical temperature between different working conditions, the set frequency of the working conditions to be switched is obtained, and whether the cooling tower can stably work under the working conditions to be switched is detected under the set frequency.
It is understood that, in the present embodiment, the set frequency is determined according to the performance of the cooling tower fan of the detection module in the cooling tower.
In the embodiment, the preset temperature section to be detected is determined by setting the start detection temperature and the stop detection temperature, the detection is started when the outdoor wet bulb temperature is in the preset temperature section, and the detection is stopped when the outdoor wet bulb temperature is not in the preset temperature section. For example, when the outdoor wet bulb temperature is detected to be in a preset temperature range to be detected, the set frequency set for the detection module can be obtained, and the detection operation mode is started according to a certain period (for example, at an interval of 1 hour).
Through setting up the temperature zone section of predetermineeing, the detection module of cooling tower only detects in the temperature zone section of predetermineeing, needn't detect throughout the year, has saved power consumption.
S202, controlling a cooling tower fan of the detection module to work at a set frequency for a preset duration.
For example, when the controller determines that the outdoor wet bulb temperature is in the preset temperature range, the controller may control the cooling tower fan of the detection module of the cooling tower to operate at the set frequency based on the acquired set frequency.
Optionally, in order to ensure the working stability of the detection module under the condition to be switched, the cooling tower fan of the detection module can be controlled to work for a preset time length at the set frequency, so that the water temperature in the detection module is stable.
For example, in this embodiment, the preset time period for the cooling tower fan of the detection module to operate at the set frequency may be 20 minutes, 30 minutes or another time period, which is not limited in this embodiment and may be determined according to a scene.
S203, acquiring the lower tower temperature detected by a lower tower temperature sensor of the detection module within a preset time.
When the controller controls the cooling tower fan of the detection module to work according to the set frequency, the temperature of the detection module can be obtained by using the lower tower temperature sensor of the detection module. Specifically, the liquid temperature in the lower tower branch pipe of the detection module can be continuously obtained by using the lower tower temperature sensor within the preset working time of the cooling tower fan of the detection module, so that whether the cooling tower can be switched to a working condition to be switched can be determined according to the value of the lower tower temperature and the stable working time.
According to the cooling tower detection control method provided by the embodiment of the application, when the outdoor wet bulb temperature is in the preset temperature zone, the set frequency is obtained and is determined according to the performance of the cooling tower fan of the detection module in the cooling tower, the cooling tower fan of the detection module is controlled to work at the set frequency and continuously has the preset time length, and finally the lower tower temperature detected by the lower tower temperature sensor of the detection module within the preset time length is obtained. Among this technical scheme, when outdoor wet bulb temperature was in predetermineeing the temperature zone section, control detection module work was in the lower tower temperature of setting for the frequency and obtaining the time of predetermineeing that lower tower temperature sensor detected, and it can accurate control water-cooling chilled water system's operating mode switch, when guaranteeing system stability, has reduced the system power consumption.
On the basis of the foregoing embodiments, fig. 3 is a schematic flowchart of a second embodiment of a cooling tower detection control method provided in the present application. As shown in fig. 3, after S203, the method may further include the following steps:
s301, judging whether the temperature of the lower tower reaches a preset temperature or not; if yes, go to step S302, otherwise, go to step S304.
In this embodiment, in the time period when the cooling tower fan of the detection module works at the set frequency, the lower tower temperature of the detection module is obtained through the lower tower temperature sensor connected below the detection module, and whether the lower tower temperature can reach the preset temperature corresponding to the working condition of the set frequency is judged.
Optionally, the preset temperature may be a theoretical temperature or a limit temperature of a working condition corresponding to a set frequency of the cooling tower fan of the detection module.
As an example, when the detected lower tower temperature reaches the preset temperature, and in order to ensure that the cold wind tower stably operates under the working condition to be switched, the following S302 may be performed to determine whether the duration of the preset temperature stabilization of the detection module is greater than the set duration, and further determine whether to perform the switching of the working condition.
As another example, when the detected lower tower temperature cannot reach the preset temperature, S304 below may be executed, and the cold wind tower fan of the detection module is controlled to end the current detection operation.
S302, judging whether the time length for stabilizing the lower tower temperature at the preset temperature is longer than the set time length; if yes, executing S303; if not, go to step S304.
For example, when a cooling tower fan of the detection module continuously operates at a set frequency for a preset time length, if the lower tower temperature can reach the preset temperature and the time length for stabilizing the lower tower temperature is greater than the set time length, it indicates that the cooling tower can stably operate under the working condition to be switched; if the lower tower temperature can reach the preset temperature and the time for reaching the preset temperature to be stable is shorter than the set time, it is indicated that the cooling tower has the condition of working under the working condition to be switched, but the working is unstable.
Optionally, in the embodiment of the present application, the set time period may be a value less than or equal to a preset time period, for example, when the preset time period is 30min, the set time period may be 20min, and the like. It can be understood that the specific value of the set duration can be determined according to the value of the preset duration and the time required for switching the working conditions, and details are not described here.
And S303, controlling fans of the cooling towers of other cooling modules except the detection module to work at the set frequency.
For example, if the controller determines that the lower tower temperature detected by the lower tower temperature sensor arranged on the lower tower branch pipe below the detection module reaches the preset temperature and lasts for a set period of time, it can be shown that the refrigeration capacity of the whole cooling tower can support the system operation requirement after the system working condition is switched at the current temperature, and then the system working condition can be switched. That is, the cooling tower fans of the other cooling modules in the cooling tower except the detection module are controlled to work at the set frequency of the cooling tower fan of the detection module, so that the temperature in the lower tower main pipe also reaches the preset temperature.
And S304, controlling the cooling tower fan of the detection module to finish working.
For example, if the controller determines that the lower tower temperature detected by the lower tower temperature sensor arranged on the lower tower branch pipe below the detection module cannot reach the preset temperature, or the lower tower temperature detected by the lower tower temperature sensor can reach the preset temperature but the time length for reaching the preset temperature is less than or equal to the set time length, it can be shown that the refrigeration capacity of the whole cooling tower is not enough to support the system operation requirement after the system operation condition is switched at the current temperature, and the system operation condition cannot be switched, so that the cooling tower fan of the detection module can be directly controlled to end working, and the detection operation mode of the detection module is exited.
According to the detection control method for the cooling tower, if the lower tower temperature reaches the preset temperature and the stable time of the preset temperature is longer than the set time, fans of the cooling towers of other cooling modules except the detection module in the cooling tower are controlled to work at the set frequency; and if the lower tower temperature does not reach the preset temperature and/or the stable time for the lower tower temperature to reach the preset temperature is less than or equal to the set time, controlling the cooling tower fan of the detection module to finish working. According to the technical scheme, the lower tower temperature of the detection module can reach the preset temperature or reach the set time of the preset temperature, the refrigerating capacity of the cooling tower at the current environment temperature can be accurately determined, and the accuracy of working condition switching and the system stability are improved.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Fig. 4 is a schematic structural diagram of an embodiment of a cooling tower detection control device provided in the present application. The cooling tower detection control device is applied to the controller in the cooling tower shown in the figure 1. As shown in fig. 4, the cooling tower inspection control device may include:
an obtaining module 401, configured to obtain a set frequency when the outdoor wet bulb temperature is in a preset temperature range, where the set frequency is determined according to performance of a cooling tower fan of a detection module in the cooling tower;
a control module 402, configured to control a cooling tower fan of the detection module to work at the set frequency for a preset duration;
the obtaining module 401 is further configured to obtain a lower tower temperature within the preset time period, which is detected by a lower tower temperature sensor of the detecting module.
In a possible design of the embodiment of the present application, the control module 402 is further configured to control the fans of the cooling towers of the other cooling modules except the detection module to operate at the set frequency when the preset temperature is stable and the preset temperature reaches the preset temperature and the preset temperature is longer than the preset time.
In another possible design of the embodiment of the present application, the control module 402 is further configured to control the cooling tower fan of the detection module to end working when the lower tower temperature does not reach the preset temperature and/or when the lower tower temperature reaches the preset temperature and the stabilization duration is less than or equal to the preset duration.
The apparatus provided in the embodiment of the present application may be used to execute the methods in the embodiments shown in fig. 2 and fig. 3, and the implementation principle and technical effects are similar, which are not described herein again.
It should be noted that the division of each module of the above apparatus is only a logical division, and all or part of the actual implementation may be integrated into one physical entity or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the control module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the control module may be called and executed by a processing element of the apparatus. The other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. As another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
Fig. 5 is a schematic structural diagram of a control device according to an embodiment of the present application. As shown in fig. 5, the control apparatus may include: at least one processor 501 (only one processor is shown in fig. 5), and a memory 502 communicatively coupled to the at least one processor 501.
Wherein the memory 502 stores instructions executable by the at least one processor 501 for execution by the at least one processor 501 to enable the control device to perform the various steps of the aforementioned method embodiments.
Alternatively, the memory 502 may be separate or integrated with the processor 501.
Further, in an embodiment of the present application, the control apparatus may further include: a communication interface 503, and a system bus 504. The memory 502 and the communication interface 503 are connected to the at least one processor 501 through a system bus 504 to complete communication therebetween, and the communication interface 503 is used for communicating with other devices.
It is understood that the system bus mentioned in fig. 5 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface is used for realizing communication between the database access device and other equipment (such as a client, a read-write library and a read-only library). The memory may comprise Random Access Memory (RAM) and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The processor 501 may be a general-purpose processor, including a central processing unit CPU, a Network Processor (NP), and the like; but also a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
Optionally, an embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-readable storage medium is executed on a computer, the computer is caused to execute the method according to the embodiment shown in fig. 2 and fig. 3.
Optionally, an embodiment of the present application further provides a chip for executing the instruction, where the chip is configured to execute the method in the embodiment shown in fig. 2 and fig. 3.
Embodiments of the present application further provide a computer program product, where the computer program product includes a computer program, where the computer program is stored in a computer-readable storage medium, and at least one processor can read the computer program from the computer-readable storage medium, and when the computer program is executed by the at least one processor, the at least one processor can implement the method of the embodiment shown in fig. 2 and fig. 3.
In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division". "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.
It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application. In the embodiment of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.
Claims (6)
1. A cooling tower detection control method is applied to a controller in a cooling tower, and comprises the following steps:
when the outdoor wet bulb temperature is in a preset temperature range, acquiring a set frequency, wherein the set frequency is determined according to the performance of a cooling tower fan of a detection module in the cooling tower;
controlling a cooling tower fan of the detection module to work at the set frequency for a preset time;
acquiring the lower tower temperature within the preset time length detected by a lower tower temperature sensor of the detection module;
if the lower tower temperature reaches a preset temperature and the time length for stabilizing the preset temperature is longer than a set time length, controlling cooling tower fans of other cooling modules in the cooling tower except the detection module to work at the set frequency;
and if the lower tower temperature does not reach the preset temperature, or the stability time of the lower tower temperature reaching the preset temperature is less than or equal to the set time, controlling the cooling tower fan of the detection module to finish working.
2. A cooling tower detection control apparatus provided in a controller in a cooling tower, the apparatus comprising:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring a set frequency when the outdoor wet bulb temperature is in a preset temperature range, and the set frequency is determined according to the performance of a cooling tower fan of the detection module in the cooling tower;
the control module is used for controlling the cooling tower fan of the detection module to work at the set frequency for a preset time;
the acquisition module is further used for acquiring the lower tower temperature within the preset time length detected by a lower tower temperature sensor of the detection module;
the control module is further configured to control fans of cooling towers of other cooling modules in the cooling tower except the detection module to work at the set frequency when the lower tower temperature reaches a preset temperature and the stable duration of the preset temperature is longer than a preset duration;
the control module is further used for controlling the cooling tower fan of the detection module to finish working when the lower tower temperature does not reach the preset temperature or the lower tower temperature reaches the preset temperature and the stable time length is less than or equal to the preset time length.
3. A cooling tower, comprising: the cooling system comprises a plurality of cooling modules, a controller and a lower tower temperature sensor connected with the controller; the controller is configured to perform the method of claim 1;
each cooling module of the plurality of cooling modules comprises an upper tower valve, a lower tower valve and a cooling tower fan;
the cooling modules are connected with the upper tower valve of each cooling module through an upper tower main pipe and connected with the lower tower valve of each cooling module through a lower tower main pipe;
the cooling tower fan in each cooling module is connected with the controller, and the controller is used for controlling the working frequency of each cooling tower fan;
the lower tower temperature sensor is arranged between a lower tower valve of the detection module and the lower tower main pipe, wherein the detection module is any one of the plurality of cooling modules.
4. The cooling tower of claim 3, further comprising:
and the total temperature sensor is arranged at an outlet of the lower tower main pipe and used for detecting the temperature in the lower tower main pipe of the cooling tower.
5. A control apparatus, characterized by comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the control device to perform the method of claim 1.
6. A computer-readable storage medium having computer-executable instructions stored therein, which when executed by a processor, perform the method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020600.4A CN112857132B (en) | 2021-01-07 | 2021-01-07 | Cooling tower, cooling tower detection control method, device, equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110020600.4A CN112857132B (en) | 2021-01-07 | 2021-01-07 | Cooling tower, cooling tower detection control method, device, equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112857132A CN112857132A (en) | 2021-05-28 |
| CN112857132B true CN112857132B (en) | 2022-11-18 |
Family
ID=76005065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110020600.4A Active CN112857132B (en) | 2021-01-07 | 2021-01-07 | Cooling tower, cooling tower detection control method, device, equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112857132B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117053619B (en) * | 2023-10-13 | 2024-01-02 | 常州中冷环保技术有限公司 | Cooling tower operation monitoring system and control method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474027A (en) * | 1983-01-31 | 1984-10-02 | The Babcock & Wilcox Company | Optimum control of cooling tower water temperature by function blocks |
| JP2742407B2 (en) * | 1996-06-24 | 1998-04-22 | 日本たばこ産業株式会社 | Matrix control method of cooling water temperature |
| CN203940777U (en) * | 2013-12-17 | 2014-11-12 | 深圳百时得能源环保科技有限公司 | A kind of cooling tower energy efficiency control system in parallel |
| CN205079668U (en) * | 2015-10-19 | 2016-03-09 | 深圳市新环能科技有限公司 | Cooling tower energy -saving control system based on efficiency control |
| CN106871364B (en) * | 2017-03-09 | 2020-12-04 | 珠海格力电器股份有限公司 | Method for controlling outlet water temperature of cooling tower of central air-conditioning system |
| CN107883519A (en) * | 2017-10-23 | 2018-04-06 | 广东美的暖通设备有限公司 | Central air-conditioning, the control method of its cooling tower, device and readable storage medium storing program for executing |
| CN110118509B (en) * | 2019-06-11 | 2020-07-07 | 珠海派诺科技股份有限公司 | Energy-saving control method and system for cooling tower fan |
| CN110360868B (en) * | 2019-07-17 | 2020-06-26 | 珠海格力电器股份有限公司 | Cooling tower, method and device for adjusting upper limit frequency of variable frequency fan of cooling tower and air conditioning unit |
-
2021
- 2021-01-07 CN CN202110020600.4A patent/CN112857132B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112857132A (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7036330B2 (en) | Free cooling activation optimized controls | |
| JP2011012904A (en) | Cold source device for free cooling, cooling system and cooling method | |
| CN109405308A (en) | Pump water system and its antifreezing control method and device, storage medium | |
| CN112857132B (en) | Cooling tower, cooling tower detection control method, device, equipment and storage medium | |
| CN115682453A (en) | Operation control method and device of water chilling unit, electronic equipment and medium | |
| CN115264771A (en) | Air conditioning system and control method thereof | |
| CN112050346A (en) | Method, device and equipment for controlling starting number of air conditioning system and air conditioning system | |
| CN111102691B (en) | Module combined air conditioning system | |
| CN116007072A (en) | Central air conditioning system and control method thereof | |
| JP2012145263A (en) | Heat source system, control method therefor, and program therefor | |
| CN113950230B (en) | Computer room air conditioner control method, device, equipment and storage medium | |
| CN108362136B (en) | Air cooling system control method and device | |
| US10810068B2 (en) | Valve failure predictions | |
| Berezovskaya et al. | Smart distribution of IT load in energy efficient data centers with focus on cooling systems | |
| CN114739066B (en) | Dynamic control method and system for modularized magnetic suspension refrigerating unit | |
| CN114110946B (en) | Control method and device for fully utilizing natural cooling of water-cooled central air conditioner | |
| JPH10300163A (en) | Method for operating air conditioner and air conditioner | |
| CN113757856A (en) | Control method and device for air conditioner cooling water system | |
| CN112856723A (en) | Cooling water pump control method and device, controller and refrigeration system | |
| CN113324318A (en) | Control method of air-cooled modular unit | |
| CN110740621B (en) | Rack-mounted air conditioner control method and system and rack-mounted air conditioner | |
| CN114688802B (en) | Refrigerator and control method thereof | |
| CN117712568A (en) | Control method and device of liquid cooling system and computer readable storage medium | |
| CN113007876B (en) | Air conditioning unit control method and device, air conditioning unit and storage medium | |
| CN116828799B (en) | Air quantity control method and device for air conditioner of data center machine room and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |