CN219265020U - Cooling tower with adjustable based on minimum outlet water temperature target - Google Patents
Cooling tower with adjustable based on minimum outlet water temperature target Download PDFInfo
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- CN219265020U CN219265020U CN202223563651.0U CN202223563651U CN219265020U CN 219265020 U CN219265020 U CN 219265020U CN 202223563651 U CN202223563651 U CN 202223563651U CN 219265020 U CN219265020 U CN 219265020U
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- 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 utility model relates to a cooling tower with an adjustable target based on the lowest water outlet temperature, which comprises a surface cooler, a precooling water pump, precooling filler, main filler, a precooling water tank, a main water tank, a precooling water distributor, a main water distributor, a cooling water pump, a plate heat exchanger, a fan, an electromagnetic flowmeter, a temperature sensor, a wind speed sensor and a controller, wherein one end of the precooling water pump is communicated with one end of the surface cooler, the other end of the precooling water pump is communicated with the precooling water tank, the other end of the surface cooler is communicated with the precooling water distributor, the main filler is arranged right behind the precooling filler, the main water distributor is arranged right above the main filler, the main water tank is arranged right below the main filler, one end of the cooling water pump is communicated with the main water tank, the other end of the cooling water pump is communicated with a hot end inlet of the plate heat exchanger, and a hot end outlet of the plate heat exchanger is communicated with the main water distributor through a water pipe. The cooling tower can well find the optimal air-water ratio, so that the unit is in an optimal working condition to operate, and the energy-saving effect is achieved.
Description
Technical Field
The utility model relates to the field of cooling tower structural components and control, in particular to a cooling tower with an adjustable target based on the minimum outlet water temperature.
Background
At present, the cooling tower can operate in a mechanical refrigeration mode, a precooling mode and a full natural cooling mode, the cooling tower is used as the most important ring of the whole refrigeration system of the data center, the water outlet temperature of the cooling tower determines the refrigeration efficiency of the whole refrigeration system, the water outlet temperature of the cooling tower is enabled to be the lowest, the energy consumption of the whole cooling system is kept to be the lowest, and the optimal operation of the working condition becomes the technical problem to be solved in the current refrigeration field.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a cooling tower with an adjustable target based on the minimum outlet water temperature and an adjusting method. The technical scheme of the embodiment of the utility model is as follows:
the cooling tower comprises a surface cooler, a precooling water pump, precooling filler, main filler, a precooling water tank, a main water tank, a precooling water distributor, a main water distributor, a cooling water pump, a plate heat exchanger, a fan, an electromagnetic flowmeter, a temperature sensor, a wind speed sensor and a controller, wherein the surface cooler is positioned at an air inlet of the cooling tower, the precooling filler is positioned right behind the surface cooler, the precooling water pump is positioned right above the precooling filler, the precooling water tank is positioned right below the precooling filler, one end of the precooling water pump is communicated with one end of the surface cooler through a water pipe, the other end of the precooling water pump is communicated with the precooling water tank through a water pipe, the other end of the surface cooler is communicated with the precooling water distributor through a water pipe, the main filler is positioned right behind the precooling filler, the main water distributor is positioned right above the main filler, one end of the precooling water pump is electrically communicated with the temperature sensor through the main water pipe, the other end of the cooling water pump is communicated with the cooling water pipe, the heat exchanger is electrically connected with the temperature sensor in the cooling water pipe, the cooling water pump is electrically communicated with the air inlet, the electromagnetic flowmeter is electrically connected with the cooling water heater, and the temperature sensor is electrically connected with the cooling water heater.
Preferably, the main packing has a trapezoid shape, and the height thereof in the standing direction becomes gradually smaller along the air intake direction.
Compared with the prior art, the utility model has the beneficial effects that: the filler is designed into a trapezoid shape, so that the same refrigerating effect is achieved while the cost is saved, and the phenomenon of floating water can be effectively reduced. Meanwhile, the cooling device can well find the optimal air-water ratio of the cooling tower by carrying out water outlet temperature test under a plurality of working condition modes, so that the unit runs under an optimal working condition, and the energy-saving effect is achieved.
Drawings
FIG. 1 is a schematic diagram of a cooling tower with adjustable target based on minimum outlet water temperature according to the present utility model;
FIG. 2 is a schematic flow diagram of a method for regulating a cooling tower according to the present utility model;
11. a surface cooler; 12. precooling water pump; 13. precooling filler; 14. a main filler; 15. precooling a water tank; 16. a main water tank; 17. precooling the water distributor; 18. a main water distributor; 19. a cooling water pump; 20. a plate heat exchanger; 21. a blower.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
FIG. 1 is a schematic view of a cooling tower according to the present utility model, which is adjustable based on the minimum outlet water temperature target; the utility model provides a cooling tower based on minimum goes out water temperature target adjustable, includes surface cooler 11, precooling water pump 12, precooling filler 13, main filler 14, precooling water tank 15, main water tank 16, precooling water distributor 17, main water distributor 18, cooling water pump 19, plate heat exchanger 20, fan 21, electric-magnetic flowmeter, temperature sensor, wind speed sensor and controller, the surface cooler is in the air intake department of cooling tower, precooling filler is arranged in the directly behind the surface cooler, precooling water distributor is arranged in directly over the precooling filler, precooling water tank is arranged in under the precooling filler, precooling water pump one end is through the water pipe with the one end of surface cooler communicates, precooling water pump other end is through the water pipe with the precooling water tank communicates, the other end of surface cooler is through the water pipe with the precooling water distributor communicates, the main filler is arranged in the main water distributor directly behind the main filler, the main water distributor is arranged in the main water inlet is arranged in the electric-magnetic flowmeter, the cooling water pump is in the air speed sensor is in the water pipe communicates with the temperature sensor, the other end is in the cooling water pipe communicates with the electric-magnetic flowmeter, the air speed sensor is in the cooling water heater is in the cooling water pipe communicates with the air inlet, the electric-magnetic flowmeter is in the cooling water heater is in the cooling water pipe communicates with the temperature sensor.
The controller is used as a control core of the cooling tower, and controls the cooling tower to operate in an initial mode according to a set initial value, detects the outlet water temperature of the cooling water in operation, and obtains the working condition of the lowest outlet water temperature by adjusting the operation working condition parameters including the power of the fan and the power of the cooling water pump so that the cooling tower operates in a plurality of working condition modes and records and compares the outlet water temperature of the cooling water in the plurality of working condition modes.
Under the working condition that the cooling tower is regulated to the lowest temperature, the fan operates with fixed power, external natural wind is sucked to be precooled into precooled filler through the surface cooler to be further precooled, lower-temperature natural wind is obtained, the lower-temperature natural wind enters into the main filler to carry out evaporation heat exchange on cooling water, lower-temperature cooling water is obtained, the collected flow falls into the main water tank, and after being sucked into the plate heat exchanger through the cooling water pump to carry out heat exchange with chilled water subjected to heat exchange and temperature rise, the cooled water is conveyed into the main water distributor and is sprayed into the main filler, and the cooled water is circulated in the manner; the precooling water pump pumps precooling water in the precooling water tank to the surface cooler to exchange heat with external natural wind to raise temperature, then the precooling water pump is conveyed to the precooling water distributor to be sprayed in the precooling filler, and after the precooling water in the precooling filler is subjected to evaporation heat exchange to lower temperature, the precooling water flows into the precooling water tank to circulate in the same way.
In order to save the amount of main filler without reducing the evaporative cooling performance of the circulating water, it is preferable that the main filler has a trapezoid shape, and the height thereof in the standing direction is gradually reduced along the air inlet direction.
The evaporation capacity is gradually reduced due to the gradual rise of the humidity of the ambient air from outside to inside, so that the main filler is designed into a trapezoid shape, the spray water quantity is also gradually reduced from outside to inside, the consumption of the filler is reduced, and the performance is not reduced.
The cooling tower is adjusted by adopting the following adjusting method to reach the minimum outlet water temperature, as shown in fig. 2, fig. 2 is a schematic flow chart of the adjusting method of the cooling tower in the utility model; a method for adjusting a cooling tower comprises the following steps:
step 100: setting fixed power W1 of a cooling water pump, fixed power W2 of a fan, interval time period S1 in a first detection mode, interval time period S2 in a second detection mode, variable power W3 of the fan and variable power W4 of the cooling water pump;
step 200: the controller controls the cooling tower to operate in a first detection mode according to a set value, in the first detection mode, the operation power of the cooling water pump is unchanged, the fan operates at fixed power W2 in a first interval period S1, in the subsequent operation time, the operation power of the fan is increased in stages by taking the change power W3 as a unit in each interval period S1 until the fan power is fully loaded, and the controller reads and stores the temperature value of the temperature sensor, the flow value of the electromagnetic flowmeter and the wind speed value of the wind speed sensor;
step 300: the controller obtains a temperature value T1 in a current interval period S1, compares the temperature value T1 with a temperature value T2 of a previous interval period S1, controls the cooling tower to operate in a second detection mode if T1> T2, obtains a wind speed value F1 of a wind speed sensor in the previous interval period S1, and obtains a wind speed value F2 of the wind speed sensor under full load of the fan when T1< T2 is reached until the power of the fan is increased to full load;
step 400: in the second detection mode, the fan operates at a fixed power W2, the cooling water pump operates at a fixed power W1 in a second interval period S2, and in the subsequent operation time, the operation power of the cooling water pump is increased in stages by taking the change power W4 as a unit in each interval period S2 until the cooling water pump power is fully loaded, and the controller reads and stores the temperature value of the temperature sensor, the flow value of the electromagnetic flowmeter and the wind speed value of the wind speed sensor;
step 500: the controller obtains a temperature value T3 in the current interval period S2, compares the temperature value T3 with a temperature value T4 of the previous interval period S2, obtains a flow value Q1 of the electromagnetic flowmeter in the current interval period S1 if T3< T4, and obtains a flow value Q2 of the electromagnetic flowmeter of the cooling water pump under the power W1 if T3> T4;
step 600: when T3< T4 and T1> T2, comparing the temperature values of T2 and T3, when T2< T3, the controller controls the fan to operate at the wind speed value F1, controls the cooling water pump to operate at the initial power, and when T3< T2, the controller controls the cooling water pump to operate at the flow value Q2, and controls the fan to operate at the initial power.
According to the technical scheme, two detection modes of constant flow of the cooling water pump and constant air quantity of the fan are adopted, namely, under the constant flow mode of the cooling water pump, the lowest running power of the fan is found under the condition that the outlet water temperature is lowest, and under the constant air quantity mode of the fan, the lowest running power of the cooling water pump is found under the condition that the outlet water temperature is lowest. At the beginning, setting the initial fixed power of the fan and the cooling water pump, operating the fan at the power in the initial operation, changing the power of the fan in the constant flow mode, and raising the operating power of the fan at the average stage by taking the set time interval as a unit until the water outlet temperature of the power of the fan is not lowered, determining the optimal working condition with the lowest water outlet temperature at the moment, and similarly, under the constant air quantity mode, changing the power of the cooling water pump, raising the operating power of the cooling water pump at the average stage by taking the set time interval as a unit until the water outlet temperature of the power of the cooling water pump is not raised any more, and determining the optimal working condition with the lowest water outlet temperature at the moment.
In general, under the constant flow mode of the cooling water pump, a rated flow is set first, the fan load is increased from 50% each time by 10% to 100% each time, the air is archived, the water flow is detected by an electromagnetic flowmeter, the real-time air speed is detected by an air speed sensor, the air quantity is calculated, the water inlet and outlet temperature is detected by a temperature probe, the water outlet temperature is compared before and after, if the water outlet temperature of the last fan load is lower than the water outlet temperature under the current fan load, the set of flow detection is ended, the set of flow detection is converted into fixed air quantity detection, otherwise, the command is continuously executed, and the air is archived.
In the constant air quantity mode of the fan, the load of the cooling water flow increases from 50% to 100% in a proportion of 10%, the time interval of each change is half an hour, and the front and rear water outlet temperatures are compared with the constant air quantity operation until the lowest water outlet temperature is obtained.
The constant air quantity water outlet temperature is compared with the constant flow quantity water outlet temperature, the working condition with the minimum water temperature is taken out for operation, the same or even better effect can be achieved when the working condition is operated, and the energy consumption of the refrigerating system can be synchronously reduced. Under constant flow, the air quantity gradually increases, the outlet water temperature is monotonically decreased in a certain range, and correspondingly, under constant air quantity, the cooling water flow gradually increases, and the outlet water temperature is monotonically increased in a certain range.
Compared with the prior art, the utility model has the beneficial effects that: the filler is designed into a trapezoid shape, so that the same refrigerating effect is achieved while the cost is saved, and the phenomenon of floating water can be effectively reduced. Meanwhile, the cooling device can well find the optimal air-water ratio of the cooling tower by carrying out water outlet temperature test under a plurality of working condition modes, so that the unit runs under an optimal working condition, and the energy-saving effect is achieved.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (2)
1. A cooling tower with adjustable based on minimum leaving water temperature target, characterized in that:
the cooling tower comprises a surface cooler, a precooling water pump, precooling filler, main filler, a precooling water tank, a main water tank, a precooling water distributor, a cooling water pump, a plate heat exchanger, a fan, an electromagnetic flowmeter, a temperature sensor, an air speed sensor and a controller, wherein the surface cooler is positioned at the air inlet of the cooling tower, the precooling filler is arranged right behind the surface cooler, the precooling water distributor is arranged right above the precooling filler, the precooling water tank is arranged right below the precooling filler, one end of the precooling water pump is communicated with one end of the surface cooler through a water pipe, the other end of the precooling water pump is communicated with the precooling water tank through a water pipe, the other end of the surface cooler is communicated with the precooling water tank through a water pipe, the main filler is arranged right behind the precooling water tank, one end of the cooling water pump is arranged right above the main filler, the cooling water pump is communicated with the main water tank through a water pipe, the other end of the precooling water pump is electrically and the air speed sensor is electrically connected with the air speed sensor, the air speed sensor is arranged at the air inlet of the cooling water pump, the electromagnetic flowmeter, the air speed sensor is electrically connected with the air inlet of the cooling water pump, the electromagnetic flowmeter is electrically connected with the electromagnetic flowmeter.
2. The cooling tower of claim 1, wherein the cooling tower is adjustable based on a minimum outlet water temperature target, wherein:
the main filler is in a trapezoid shape, and the height of the main filler in the vertical direction is gradually reduced along the air inlet direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223563651.0U CN219265020U (en) | 2022-12-30 | 2022-12-30 | Cooling tower with adjustable based on minimum outlet water temperature target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223563651.0U CN219265020U (en) | 2022-12-30 | 2022-12-30 | Cooling tower with adjustable based on minimum outlet water temperature target |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219265020U true CN219265020U (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223563651.0U Active CN219265020U (en) | 2022-12-30 | 2022-12-30 | Cooling tower with adjustable based on minimum outlet water temperature target |
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| Country | Link |
|---|---|
| CN (1) | CN219265020U (en) |
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2022
- 2022-12-30 CN CN202223563651.0U patent/CN219265020U/en active Active
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