CN2188183Y - Fan controller for industrial water cooling tower - Google Patents
Fan controller for industrial water cooling tower Download PDFInfo
- Publication number
- CN2188183Y CN2188183Y CN 93243795 CN93243795U CN2188183Y CN 2188183 Y CN2188183 Y CN 2188183Y CN 93243795 CN93243795 CN 93243795 CN 93243795 U CN93243795 U CN 93243795U CN 2188183 Y CN2188183 Y CN 2188183Y
- Authority
- CN
- China
- Prior art keywords
- fan
- controller
- water cooling
- cooling tower
- cpu
- 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.)
- Expired - Fee Related
Links
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The utility model relates to a fan controller for an industrial water cooling tower. A microprocessor is used as a control center by the utility model, which is multiplex control of outputs connected with a starting key and a stopping key of a fan motor respectively through a manual switching group and a relay group; according to a water temperature signal which is inputted by a temperature transmitter, a current to voltage converter, and an analog to digital converter connected orderly, and the starting and stopping balance control of a plurality of fan motors in a cyclic step way is realized.
Description
It is core with the microprocessor chip that the utility model relates to a kind of, the controller that can manage many typhoons machine simultaneously.
As everyone knows, industrial circulating cooling water tower blower fan is controlled automatically, can be provided stable cooling water to supply with and saves energy consumption to the water device.In the present conventional control mode, for example the control of motor variable-frequency speed-regulating and blade varied angle all exists separately defective and deficiency: the best efficiency point when frequency control makes motor break away from former the design, and self has increased extra energy consumption again its speed regulator; Change the blade angle of facining the wind and can play the stepless speed regulation effect, but executing agency's complex structure, the running part environment is abominable, fault rate is high, and above-mentioned dual mode controlled by platform blower fan, disposable having high input given to apply and brought difficulty.
The utility model is that design in order to overcome deficiency of the prior art a kind of is the closed loop thermal regulating system that core can be implemented grouping start and stop control to many typhoons machine with the chip microprocessor.
Basic comprising of the present utility model is around a microprocessor by the dedicated program domination, and CPU (1), program storage unit (PSU) (2), data storage cell (3), setup parameter memory cell (4), keyboard (5) and display (6) are wherein arranged.Its control principle at first is to converge the on-the-spot mount type temperature transmitter (7) of integrated two-wire system in exit from being installed on controlled blower fan water cooling pond, measure the continuous variable signal of water temperature, send current-to-voltage converting circuit (8) and A/D change-over circuit (9) to as digital regulated variable through the two-wire current system, enter CPU (1) by optoisolator (10) again; Dedicated program in the program storage (2) will be according to the minimum performance period time value of being set by keyboard (5) and display (6) in advance in the parameter storage (4) of blower fan start and stop, minimum permissible variation value of temperature and the minimum franchise value of rate temperature change fellowship are regulated, the start and stop and the start and stop platform number of decision blower fan, the multichannel control output that is produced by CPU (1) is connected respectively and is connected in parallel with stopping key by each fan starting in solid-state relay group (12) and MTS group (13) and the fan switch cabinet (14), make each blower fan can be separately or grouping carry out start and stop, realize that the continuous analog of finishing temperature with the discrete control of separate unit regulates.When control blower fan start and stop order, carry out according to the endless-walk pattern, promptly when starting shooting operation, with the at first unlatching of shutdown the earliest in the current blower fan of having closed down, and when closing operation, with at first closing down of starting shooting the earliest in the current blower fan of having opened,, and guarantee that temperature control requires and suppress the frequent start-stop of blower fan with the shutdown process of this balance blower fan and ancillary apparatus equipment.For guaranteeing the safe and reliable work of controller, controller signals extracts part (7), (8), (9), signal operating part (12), (13), (14), communication interface part (16), with main control part (1), (2), (3), (4), to carry out electrical equipment by photoelectrical coupler (10), (11), (15) respectively and isolate, and it is independently-powered to use insulating power supply (18) to distinguish, impact and anti-jamming capacity to improve anti-forceful electric power.See accompanying drawing 1.
Because adopt such scheme, the utility model compared with prior art has following characteristics:
This controller adopts classification start and stop control, has reduced equipment cost; Because controlled motor is in the best efficiency point operation all the time, has avoided the blower fan frequent start-stop again simultaneously, thereby has had high operating efficiency; Only relevant with the connection of existing equipment with connection in series-parallel start stop switch circuit, for scrap build provides convenience, can in not stopping production, carry out.
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is a circuit theory schematic diagram of the present utility model.
Fig. 2 is embodiment circuit theory diagrams of the present utility model.
(1) is CPU among the figure, (2) be program storage unit (PSU), (3) be data storage cell, (4) be the setup parameter memory cell, (5) are keyboards, and (6) are displays, (7) be temperature transmitter, (8) be current-to-voltage convertor, (9) are analog/digital converters, and (10) are photoisolators, (11) be the photoisolator group, (12) be the solid-state relay group, (13) are the MTS groups, and (14) are the fan switch cabinets, (15) be photoisolator, (16) be serial interface circuit, (17) are senior management computers, and (18) are insulating power supplies.
The special chip that (1), (2), (3), (4) can use mask technique to be integrated in one in the present embodiment, or use general integrated chip 8031,2764,6116,2816 assemble; Display (6) is made up of 68 sections LED charactrons, left two bit interleaving display setting parameters, right three displays temperature measured values and fan operation state; Keyboard (5) is four multifunction instrument compression bondings; Solid-state relay group (12) and the used SSR-ZL203 of MTS group (13) and JQX-14FA element model are that controlled power of motor is in 10～100KW scope.
Claims (3)
1, a kind of industrial cooling tower fan controller, by CPU (1), memory cell (2), (3), (4), keyboard (5) and display (6) are core, it is characterized in that: the multichannel control output that produces by CPU (1), connect respectively and be connected in parallel with stopping key by each fan starting button in solid-state relay group (12) and MTS group (13) and the fan switch cabinet (14).
2, controller according to claim 1 is characterized in that: be in the temperature measurement that water cooling pond converges the exit and adopt the on-the-spot mount type temperature transmitter of two-wire system (7) and current-to-voltage converting circuit (8) and analog-to-digital conversion circuit (9) to be linked in sequence.
3, controller according to claim 1, it is characterized in that: controller signals extracts part (7), (8), (9), control signal operating part (12), (13), (14), serial communication interface part (16) will be carried out the electrical equipment isolation by photoisolator (10), (11), (15) respectively with main control part (1), (2), (3), (4) and will be connected, and be connected with insulating power supply (18) respectively, realize independently-powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243795 CN2188183Y (en) | 1993-11-09 | 1993-11-09 | Fan controller for industrial water cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93243795 CN2188183Y (en) | 1993-11-09 | 1993-11-09 | Fan controller for industrial water cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2188183Y true CN2188183Y (en) | 1995-01-25 |
Family
ID=33817171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93243795 Expired - Fee Related CN2188183Y (en) | 1993-11-09 | 1993-11-09 | Fan controller for industrial water cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2188183Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808093A (en) * | 2013-07-29 | 2014-05-21 | 安徽千一机械设备有限公司 | Circulating cooling water system with automatic control function for mining |
-
1993
- 1993-11-09 CN CN 93243795 patent/CN2188183Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808093A (en) * | 2013-07-29 | 2014-05-21 | 安徽千一机械设备有限公司 | Circulating cooling water system with automatic control function for mining |
| CN103808093B (en) * | 2013-07-29 | 2016-04-27 | 安徽千一机械设备有限公司 | Mining automatic controlled circulation cooling water system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |