CN212538946U - Automatic maintenance system for cooling tower - Google Patents
Automatic maintenance system for cooling tower Download PDFInfo
- Publication number
- CN212538946U CN212538946U CN202021233254.5U CN202021233254U CN212538946U CN 212538946 U CN212538946 U CN 212538946U CN 202021233254 U CN202021233254 U CN 202021233254U CN 212538946 U CN212538946 U CN 212538946U
- Authority
- CN
- China
- Prior art keywords
- water
- pipe
- cooling tower
- blow
- valve
- 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
Abstract
The utility model relates to an automatic maintenance system of a cooling tower, which comprises a cooling tower, wherein a water replenishing pipe, a water return pipe, a water inlet pipe and a blow-off pipe are arranged on the cooling tower; a controller is also arranged; an electric control water replenishing valve is arranged on the water replenishing pipe; the water replenishing pipe is connected with an external water source; the water return pipe is positioned above the water collector; the water inlet pipe is positioned at the lower part of the water collector; the sewage draining pipe is positioned at the bottom of the water collector; an electric control blow-down valve is arranged on the blow-down pipe; a backwater temperature sensor is arranged on the backwater pipe; a water inlet temperature sensor is arranged on the water inlet pipe; and a flowmeter is arranged on the water inlet pipe. The utility model adopts the sensor to calculate after detection, so as to obtain more accurate water supplement amount and carry out accurate water supplement; meanwhile, the electric control blow-down valve is opened proportionally according to the detection value aiming at the blow-down requirement, so as to blow down.
Description
Technical Field
The utility model relates to an automatic maintenance system of moisturizing, blowdown is carried out cooling tower belongs to automatic electromechanical device field.
Background
The cooling tower is an indispensable device in an industrial circulating water system, and functions to cool the device again by sufficiently contacting cooling water having an increased temperature after passing through plant equipment with air to exchange heat and lowering the temperature of the cooling water. The principle of the cooling tower is that a part of cooling water is evaporated into the atmosphere, and the heat of the residual cooling water is taken away by evaporation, so that the temperature of a water body is reduced; and in addition, a part of heat is directly exchanged with water through air, and the part of heat is less in heat carrying away. Therefore, with the continuous circulation of the cooling water, the amount of water in the system is less and less, and water needs to be supplemented in time. Meanwhile, in order to reduce the ion concentration and the contamination in the water body, the cooling tower needs to discharge the sewage frequently.
In the operation and maintenance process of the existing cooling tower of a factory, operation and maintenance personnel usually carry out water supplement and pollution discharge on the cooling tower according to experience, the water supplement amount is generally roughly selected to be 0.3% of the circulating water amount, the pollution discharge amount is discharged at will by means of the feeling of the operation and maintenance personnel, and even more, a pollution discharge valve is opened all the time. Even if there are automatic water supply, waste fitting discharging at present, this kind of device often only uses floater and timing drain valve to carry out moisturizing, drainage control, but the moisturizing volume of cooling tower is relevant with temperature and humidity every day, and fixed drainage, discharge capacity can not accord with the actual demand every day, and this has caused the waste of water resource. The method is not only not in accordance with the national requirements of energy conservation and emission reduction, but also in accordance with the requirements of fine management of enterprises.
Therefore, in order to solve the above problems, it is necessary to design an automatic maintenance system for a cooling tower, which can automatically supply water and discharge sewage, avoid manual maintenance, improve the utilization rate of water resources, and reduce waste.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cooling tower automatic maintenance system to the automatic water supply and the blowdown that realize the cooling tower in hope remove artifical the maintenance from, and improve the utilization ratio of water resource, reduce extravagantly.
In order to achieve the purpose of the utility model, an automatic maintenance system of a cooling tower is provided, which comprises a cooling tower, wherein the upper part of the cooling tower is provided with a cooling fan, and the lower part of the cooling tower is provided with a water collector; a water replenishing pipe, a water return pipe, a water inlet pipe and a sewage discharge pipe are arranged on the cooling tower;
it is characterized in that a controller is also arranged;
an electric control water replenishing valve is arranged on the water replenishing pipe; the water replenishing pipe is connected with an external water source;
the water return pipe is positioned above the water collector;
the water inlet pipe is positioned at the lower part of the water collector;
the sewage draining pipe is positioned at the bottom of the water collector; an electric control blow-down valve is arranged on the blow-down pipe;
a backwater temperature sensor is arranged on the backwater pipe;
a water inlet temperature sensor is arranged on the water inlet pipe;
a flowmeter is arranged on the water inlet pipe;
the electric control water replenishing valve and the electric control blow-down valve are connected with an output port of the controller;
the backwater temperature sensor, the water inlet temperature sensor and the flowmeter are connected with the input port of the controller.
As a further improvement of the present invention, a temperature and humidity sensor is arranged in the cooling tower, and the temperature and humidity sensor is located above the water collector and below the cooling fan;
a detection probe of the temperature and humidity sensor is positioned in the water mist between the water collector and the cooling fan, and is used for detecting the temperature and humidity values of the water mist; the temperature and humidity sensor is connected with the input port of the controller.
As a further improvement of the present invention, an ion concentration sensor is installed at the lower part of the water collector in the cooling tower, and a detection probe of the ion concentration sensor is located in the water body of the water collector to detect the ion concentration value of the water body; the ion concentration sensor is connected with the input port of the controller.
As a further improvement of the utility model, the electric control blowoff valve is a proportional opening valve.
The utility model discloses an automatic maintenance system of cooling tower, to the moisturizing demand of cooling tower, adopt the sensor to detect the back, calculate, obtain more accurate moisturizing volume, carry out accurate moisturizing; meanwhile, the electric control blow-down valve is opened proportionally according to the detection value aiming at the blow-down requirement, so as to blow down.
Compared with the prior art, the utility model, cooling tower automatic maintenance system still has following advantage:
(1) the water replenishing control is accurate, and the water saving effect is good;
(2) the pollution discharge is carried out in real time, the ion concentration of the water body is effectively controlled, and the safety of a circulating cooling water system is maintained;
(3) the controller is adopted to collect and control centralized data, so that the state is conveniently presented, and the adjustment and control are convenient.
Drawings
FIG. 1 is a schematic view of the overall structure of the automatic maintenance system of the cooling tower of the present invention;
fig. 2 is a schematic structural diagram of the control system of the present invention;
reference numerals: 1-cooling tower, 11-cooling fan, 12-water collector; 21-a water replenishing pipe and 22-an electric control water replenishing valve;
31-a water return pipe and 32-a water return temperature sensor; 35-water inlet pipe, 36-water inlet temperature sensor and 37-flowmeter;
41-a blow-off pipe and 42-an electric control blow-off valve; 51-a temperature and humidity sensor; 52-ion concentration sensor.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, for the utility model discloses cooling tower automatic maintenance system's overall structure schematic diagram, the utility model discloses cooling tower automatic maintenance system includes cooling tower 1, and its upper portion is cooling fan 11, and the lower part is water collector 12, will through cooling fan 11 hot-air effluvium in cooling tower 1.
A water replenishing pipe 21 is arranged on the cooling tower 1, and an electric control water replenishing valve 22 is arranged on the water replenishing pipe 21; the water replenishing pipe 21 is connected to an external water source, such as a tap water supply pipe.
A water return pipe 31 is arranged above the water collector 12 of the cooling tower 1, and the water return pipe 31 is connected with a water outlet of industrial circulating water of equipment; a water inlet pipe 35 is arranged at the lower part of the water collector 12, and the water inlet pipe 35 is connected with a water inlet of industrial circulating water of equipment; from the water collector 12 is through water inlet pipe 35 is carried to equipment after drawing water, and to equipment cooling back, the water after the heating is got back to in the cooling tower 1 through wet mouth flows, drenches down naturally, realizes the cooling.
The bottom of the water collector 12 of the cooling tower 1 is connected with a drain pipe 41, and the drain pipe 41 is also provided with an electric control drain valve 42; the dirty or high concentration sewage settled on the bottom plate of the collector 12 is discharged through the discharging pipe 41.
The utility model discloses cooling tower automatic maintenance system's improvement part lies in:
1. a temperature and humidity sensor 51 is installed above the water collector 12 of the cooling tower 1, and the temperature and humidity values of the water mist above the water collector 12 and below the cooling fan 11 can be detected through the temperature and humidity sensor 51;
2. an ion concentration sensor 52 is installed at the lower part of the water collector 12 of the cooling tower 1, and the ion concentration condition of the water body in the water collector 12 can be detected through the ion concentration sensor 52;
3. a backwater temperature sensor 32 and a water inlet temperature sensor 36 are respectively arranged on the backwater pipe 31 and the water inlet pipe 35; the temperature of the water in the water return pipe 31 and the temperature of the water in the water inlet pipe 35 can be detected through the water return temperature sensor 32 and the water inlet temperature sensor 36, so that the water return temperature difference can be calculated;
4. a flow meter 37 is arranged on the water inlet pipe 35; the flow meter 37 is used for detecting the water quantity used by the system and the return water temperature difference, and the heat dissipation quantity required by the system can be calculated.
As shown in fig. 2, the utility model discloses cooling tower automatic maintenance system still is equipped with the controller, the numerical value of each sensor of analysis is gathered and gathers to the controller, controls after judging automatically controlled moisturizing valve 22 carries out the moisturizing, or control automatically controlled blowoff valve 42 carries out the blowdown.
The utility model discloses accurate moisturizing control of cooling tower automatic maintenance system at first needs to calculate the water loss of cooling tower:
1. calculating the amount of water lost by evaporation S1; this is the biggest part of water loss in the cooling tower, the utility model discloses calculate respectively as follows:
(1) calculating the backwater temperature difference through the backwater temperature sensor 32 and the water inlet temperature sensor 36, and calculating the heat dissipation capacity required by the system by combining the flowmeter 37;
(2) calculating the maximum water inlet and return temperature difference theoretically achievable by the temperature and humidity sensor 51;
according to the thermodynamics related content, based on the heat difference value of the inlet water and the return water compared with the heat value of the upper water for evaporation and heat absorption, the temperature is reduced to the current temperature by the amount of water needing to be evaporated, and the theoretical evaporation loss water quantity S1' is calculated.
Meanwhile, since a part of heat is carried away by direct heat exchange between water and air, but the part is smaller than the heat absorption amount of evaporation, the water amount S1 lost by evaporation is 1.1 × S1'.
2. The amount of water lost by blowing S2; namely the amount of water blown out of the cooling tower by the cooling fan 11 in the process of spraying the cooling water in the cooling tower; this partial water amount can be obtained from experience provided by the cooling tower manufacturer and can be taken at corresponding fixed values in different seasons, defined as S2.
3. The amount of water lost to blowdown S3; can be determined by detecting the ion concentration of the system and setting the concentration coefficient, and is defined as S3.
To sum up the utility model discloses water supply amount B among cooling tower automatic maintenance system' S accurate water supply control is S1+ S2+ S3.
The electric control water replenishing valve 22 is opened in time as required, and water can be accurately replenished with fixed water amount, so that blind water replenishing is avoided.
According to the industrial production needs, the utility model discloses cooling tower automatic maintenance system's accurate moisturizing control system can calculate current required moisturizing volume B once every 1 hour, then opens automatically controlled moisturizing valve 22 decides the accurate moisturizing of water volume.
The utility model discloses cooling tower automatic maintenance system's accurate blowdown control adopts following mode to realize:
monitoring the current ion concentration in the water collector 12 in real time according to the ion concentration sensor 52, comparing the ratio of the current ion concentration to the set concentration by the controller, and when the ratio reaches 3-4, namely the concentration multiple reaches 3-4; at this time, the electrically controlled blowoff valve 42 is opened to perform blowoff.
The electrically controlled blowdown valve 42 is a proportional open valve.
When the process requirement is adjusted and the set concentration multiple is changed, the control parameter of the controller is adjusted, so that the opening angle of the valve core in the electric control blow-down valve 42 can be adjusted, and the blow-down amount is adjusted.
And adjusting the opening angle of the valve core in the electric control blow-down valve 42 according to the real-time numerical value of the concentration multiple, realizing real-time micro blow-down, and ensuring that the concentration multiple is always controlled within a set range.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention, and such equivalents and substitutions are intended to be included within the scope of the invention as defined by the appended claims.
Claims (4)
1. The automatic maintenance system of the cooling tower comprises the cooling tower, wherein the upper part of the cooling tower is provided with a cooling fan, and the lower part of the cooling tower is provided with a water collector; a water replenishing pipe, a water return pipe, a water inlet pipe and a sewage discharge pipe are arranged on the cooling tower;
it is characterized in that a controller is also arranged;
an electric control water replenishing valve is arranged on the water replenishing pipe; the water replenishing pipe is connected with an external water source;
the water return pipe is positioned above the water collector;
the water inlet pipe is positioned at the lower part of the water collector;
the sewage draining pipe is positioned at the bottom of the water collector; an electric control blow-down valve is arranged on the blow-down pipe;
a backwater temperature sensor is arranged on the backwater pipe;
a water inlet temperature sensor is arranged on the water inlet pipe;
a flowmeter is arranged on the water inlet pipe;
the electric control water replenishing valve and the electric control blow-down valve are connected with an output port of the controller;
the backwater temperature sensor, the water inlet temperature sensor and the flowmeter are connected with the input port of the controller.
2. The automatic maintenance system of the cooling tower according to claim 1, wherein a temperature and humidity sensor is arranged in the cooling tower, and the temperature and humidity sensor is positioned above the water collector and below the cooling fan;
a detection probe of the temperature and humidity sensor is positioned in the water mist between the water collector and the cooling fan, and is used for detecting the temperature and humidity values of the water mist; the temperature and humidity sensor is connected with the input port of the controller.
3. The automatic maintenance system of the cooling tower as claimed in claim 1, wherein an ion concentration sensor is installed at the lower part of the water collector in the cooling tower, and a detection probe of the ion concentration sensor is positioned in the water body of the water collector and is used for detecting the ion concentration value of the water body; the ion concentration sensor is connected with the input port of the controller.
4. The automatic cooling tower maintenance system of claim 3, wherein the electronically controlled blowdown valve is a proportional open valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021233254.5U CN212538946U (en) | 2020-06-29 | 2020-06-29 | Automatic maintenance system for cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021233254.5U CN212538946U (en) | 2020-06-29 | 2020-06-29 | Automatic maintenance system for cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212538946U true CN212538946U (en) | 2021-02-12 |
Family
ID=74545880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021233254.5U Active CN212538946U (en) | 2020-06-29 | 2020-06-29 | Automatic maintenance system for cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212538946U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264189A (en) * | 2021-12-27 | 2022-04-01 | 中国建筑设计研究院有限公司 | Automatic pollution discharge control device and method for cooling tower |
| CN114623636A (en) * | 2022-05-17 | 2022-06-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Circulating water system for classified regulation of cooling water temperature |
-
2020
- 2020-06-29 CN CN202021233254.5U patent/CN212538946U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264189A (en) * | 2021-12-27 | 2022-04-01 | 中国建筑设计研究院有限公司 | Automatic pollution discharge control device and method for cooling tower |
| CN114264189B (en) * | 2021-12-27 | 2024-01-26 | 中国建筑设计研究院有限公司 | Automatic pollution discharge control device and method for cooling tower |
| CN114623636A (en) * | 2022-05-17 | 2022-06-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Circulating water system for classified regulation of cooling water temperature |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105546759B (en) | A kind of central air conditioning energy-saving control system and its control strategy | |
| CN102147146B (en) | Digital integrated intelligent control system of central air conditioner | |
| CN104633857B (en) | Air conditioner energy-saving optimization control method and device | |
| CN212538946U (en) | Automatic maintenance system for cooling tower | |
| CN104654449B (en) | Distributed electric heat energy storage heating control system and method | |
| CN201352745Y (en) | Closed circulating water cooling device applied to wind power generation | |
| CN112254320B (en) | Adaptive variable differential pressure control method for air conditioner variable flow water system based on AI | |
| CN206739482U (en) | Variable air rate fresh air energy-saving system based on solar energy | |
| CN205717751U (en) | A kind of efficient control system of central air-conditioning Cooling and Heat Source machine room | |
| CN201992769U (en) | Digital integrated intelligent control system of central air-conditioner | |
| CN203421772U (en) | Intelligent heat exchange station | |
| CN112556098A (en) | Dynamic hydraulic balance control method | |
| CN203533800U (en) | Fuzzy control system of central air conditioner | |
| CN113218040A (en) | Energy efficiency improvement control method for central air-conditioning system | |
| CN207263015U (en) | A kind of cooling tower frequency conversion fan control system | |
| CN110715347A (en) | One-network balancing device and control method | |
| CN203533790U (en) | Fuzzy control system of cooling water device of central air conditioner | |
| CN113154900A (en) | Cooling tower with air outlet provided with dry and wet balls and operation control method thereof | |
| CN214332878U (en) | Air-cooled air conditioner and control system for noise reduction and precooling of outer unit thereof | |
| CN211551793U (en) | One-network balancing device | |
| CN208687755U (en) | A kind of ash bucket steam heating control system | |
| CN206556198U (en) | A kind of device for tail end of central air conditioner air conditioner performance analysis | |
| CN205119351U (en) | Basic station heat source intelligent management economizer system | |
| CN206073374U (en) | LDAR efficiency Optimal Control Systems | |
| CN215217335U (en) | Energy-saving automatic control system of variable parameter cooling tower set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |