CN110763074A - Automatic control system for matching operation of cooling tower fan and circulating pump - Google Patents
Automatic control system for matching operation of cooling tower fan and circulating pump Download PDFInfo
- Publication number
- CN110763074A CN110763074A CN201910067790.8A CN201910067790A CN110763074A CN 110763074 A CN110763074 A CN 110763074A CN 201910067790 A CN201910067790 A CN 201910067790A CN 110763074 A CN110763074 A CN 110763074A
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- cooling
- tower fan
- cooling tower
- automatic control
- water
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- 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
Abstract
The invention relates to the technical field of waste heat recovery systems, and discloses an automatic control system for matching operation of a cooling tower fan and a circulating pump. This an automatic control system for cooling tower fan and circulating pump assorted operation, through regard water inlet temperature as the variable, set up complete automatic control system, carried out a plurality of state combinations such as "open, close, frequency conversion operation" with circulating water pump and cooling tower fan, realized cooling system and waste heat utilization system assorted operation, the cooling water inlet temperature of the cavity press of compression system is invariable relatively, has guaranteed the safe operation of air compressor machine promptly, has guaranteed again that water source heat pump system moves in the high efficiency region all the time, realizes all-round energy-conservation.
Description
Technical Field
The invention relates to the technical field of waste heat recovery systems, in particular to an automatic control system for matching operation of a cooling tower fan and a circulating pump.
Background
The shipbuilding industry is a traditional personnel-intensive high-energy-consumption industry, and on one hand, a large amount of heat energy needs to be consumed in the production and living process due to numerous personnel; on the other hand, for various reasons, a large amount of heat energy is wasted in the form of loss (industrial waste heat) in the production process, and how to collect and effectively utilize the lost heat energy so as to reduce the consumption of daily energy is an important subject facing the energy saving work of modern shipbuilding enterprises.
The air compression station is one of main energy consumption station rooms of a ship factory, a large amount of heat energy (waste heat) is generated in the operation process of the air compression station, and the part of energy needs to be removed by adopting necessary measures so as to avoid influencing the normal operation of a unit.
Disclosure of Invention
The invention provides an automatic control system for matching operation of a cooling tower fan and a circulating pump, which has the advantages of omnibearing energy conservation and guarantee of normal use and stable and efficient preparation of hot water of a compression system under extreme working conditions, and solves the problems that the traditional method takes heat out by using water as a carrier, adopts a cooling water tower mode to discharge the heat into the atmosphere, and needs to input certain electric energy in the process, so that the mode is accumulated day by day and month, a large amount of energy waste can be caused, in addition, under the extreme working conditions, because the low temperature causes incomplete evaporation degree of a refrigerant in an evaporator, the refrigerant enters a compressor in a gas-water two-phase flow state, the efficiency of the compressor is influenced, the heating capacity is reduced, and the evaporator coil pipe can be damaged seriously.
The invention provides the following technical scheme: the utility model provides an automatic control system that is used for cooling tower fan and circulating pump to match operation, includes water source heat pump system, compression system, cooling system, waste heat utilization system and central control module, water source heat pump system, compression system, cooling system and waste heat utilization system pass through radio station and central control module electric connection, cooling system's output and waste heat utilization system's input electric connection.
Preferably, the radio station adopts a day-essence subminiature NDA data transmission station.
Preferably, the water source heat pump system comprises return water temperature controller and heat pump set, return water temperature controller's output and compression system's input electric connection.
Preferably, the heat pump unit consists of an evaporator, a condenser and a self-circulation bypass pipeline, and the heat pump unit is a screw compressor heat pump unit.
Preferably, the compression system is composed of a cooling water pipe temperature controller and a water inlet temperature controller, and the output end of the water inlet temperature controller is electrically connected with the input end of the cooling system.
Preferably, the cooling system consists of a circulating water pump and a cooling tower fan, and the circulating water pump is a horizontal end suction pump.
The invention has the following beneficial effects:
1. this an automatic control system for cooling tower fan and circulating pump match operation, control the temperature of cooling water inlet through water inlet temperature controller, regard water inlet temperature as the variable, complete automatic control system has been set up, carry out a plurality of state combinations such as "open, close, frequency conversion operation" with circulating water pump and cooling tower fan, cooling system and the operation of waste heat utilization system matching nature have been realized, the cooling water inlet temperature of the cavity press in the compression system is invariable relatively, the air compressor machine safe operation has been ensured promptly, water source heat pump system has been ensured again and has been operated in the high efficiency region all the time, realize all-round energy-conservation.
2. According to the automatic control system for the matching operation of the cooling tower fan and the circulating pump, the self-circulation bypass pipeline is arranged on the heat pump unit, when the temperature of the inlet of the evaporator is lower than the set temperature, the self-circulation bypass pipeline is started to ensure that part of water is in a flowing state, the temperature of each part of the coil pipe is balanced, supercooling icing is effectively prevented, the flow of a refrigerant entering the evaporator is reduced according to the proportional bypass of temperature values, effective evaporation is ensured, and the efficient operation of the compression system under the extreme working condition is ensured.
3. This an automatic control system for cooling tower fan and circulating pump match operation, through the optimization cooperation between water source heat pump system, compression system cooling system and the waste heat utilization system for heat pump set is in winter severe cold stack, and when the air compressor machine low-load produced heat, the efficient preparation hot water is stabilized to the homoenergetic, has realized guaranteeing that the whole system under the air compressor machine steady operation prerequisite is energy-conserving, provides huge convenient for the modernization shipbuilding enterprise.
Drawings
FIG. 1 is a block diagram of the system of the present invention.
In the figure: 1. a water source heat pump system; 11. a water return pipe temperature controller; 12. a heat pump unit; 121. an evaporator; 122. a condenser; 123. a self-circulating bypass line; 2. a compression system; 21. a cooling water pipe temperature controller; 22. a water inlet temperature controller; 3. a cooling system; 31. a water circulating pump; 32. a cooling tower fan; 4. a waste heat utilization system; 5. and a central control module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an automatic control system for matching operation of a cooling tower fan and a circulating pump includes a water source heat pump system 1, a compression system 2, a cooling system 3, a waste heat utilization system 4 and a central control module 5, the water source heat pump system 1 is composed of a water return pipe temperature controller 11 and a heat pump unit 12, the type of the water return pipe temperature controller 11 is WK-SM3, an output end of the water return pipe temperature controller 11 is electrically connected with an input end of the compression system 2, the heat pump unit 12 is composed of an evaporator 121, a condenser 122 and a self-circulation bypass pipeline 123, the self-circulation bypass pipeline 123 is arranged in the heat pump unit 12, when an inlet temperature of the evaporator 121 is lower than a set temperature, the self-circulation bypass pipeline 123 is started to ensure that part of water is in a flowing state, the temperatures of various parts of a coil pipe are equalized, supercooling icing is effectively prevented, refrigerant flow entering the evaporator 121 is reduced according to temperature value, the effective evaporation is ensured, the high-efficiency operation of the compression system 2 under the extreme working condition is ensured, the heat pump unit 12 is a screw compressor heat pump unit, the compression system 2 consists of a cooling water pipe temperature controller 21 and a water inlet temperature controller 22, the model of the cooling water pipe temperature controller 21 is CHB102, the model of the water inlet temperature controller 22 is BF-D110A, the output end of the water inlet temperature controller 22 is electrically connected with the input end of the cooling system 3, the temperature of a cooling water inlet is controlled through the water inlet temperature controller 22, the water inlet temperature is taken as a variable, a complete automatic control system is arranged, the circulating water pump 31 and the cooling tower fan 32 are combined in a plurality of states of opening, closing, variable frequency operation and the like, the matching operation of the cooling system 3 and the waste heat utilization system 4 is realized, and the cooling water inlet temperature of the hollow compressor in the compression system 2 is relatively constant, the safe operation of the air compressor is ensured, the water source heat pump system 1 is ensured to always operate in a high-efficiency area, the all-round energy conservation is realized, the water source heat pump system 1, the compression system 2, the cooling system 3 and the waste heat utilization system 4 are electrically connected with the central control module 5 through a radio station, the model of the central control module 5 is S7-200, the radio station adopts a Nintendo ND subminiature 250A data transmission radio station, the output end of the cooling system 3 is electrically connected with the input end of the waste heat utilization system 4, the cooling system 3 consists of a circulating water pump 31 and a cooling tower fan 32, the circulating water pump 31 is a horizontal end suction pump, the heat pump units 12 are superposed in severe cold in winter through the optimized matching among the water source heat pump system 1, the compression system 2, the cooling system 3 and the waste heat utilization system 4, the hot water can be stably and efficiently prepared when the air compressor generates low load, provides great convenience for modern shipbuilding enterprises.
When the water source heat pump system works, the temperature of a cooling water inlet is controlled through the water inlet temperature controller 22, the temperature of the water inlet is used as a variable, the circulating water pump 31 and the cooling tower fan 32 are combined in multiple states of opening, closing, variable frequency operation and the like, matching operation of the cooling system 3 and the waste heat utilization system 4 is achieved, the temperature of cooling water inlet of the air compressor in the compression system 2 is relatively constant, safe operation of the air compressor is guaranteed, the water source heat pump system 1 is always operated in a high-efficiency area, when the temperature of an inlet of the evaporator 121 is lower than a set temperature, the self-circulation bypass pipeline 123 is started, the part of water is guaranteed to be in a flowing state, the temperatures of all parts of the coil pipes are balanced, the heat pump units 12 generate heat in a severe cold superposition mode in winter, and when the.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an automatic control system that is used for cooling tower fan and circulating pump to match operation, includes water source heat pump system (1), compression system (2), cooling system (3), waste heat utilization system (4) and central control module (5), its characterized in that: the water source heat pump system (1), the compression system (2), the cooling system (3) and the waste heat utilization system (4) are electrically connected with the central control module (5) through a radio station, and the output end of the cooling system (3) is electrically connected with the input end of the waste heat utilization system (4).
2. The automatic control system for matching operation of the cooling tower fan and the circulating pump according to claim 1, wherein: the radio station adopts a day-essence subminiature ND250A data transmission station.
3. The automatic control system for matching operation of the cooling tower fan and the circulating pump according to claim 1, wherein: the water source heat pump system (1) is composed of a water return pipe temperature controller (11) and a heat pump unit (12), and the output end of the water return pipe temperature controller (11) is electrically connected with the input end of the compression system (2).
4. The automatic control system for matching operation of the cooling tower fan and the circulating pump according to claim 3, wherein: the heat pump unit (12) is composed of an evaporator (121), a condenser (122) and a self-circulation bypass pipeline (123), and the heat pump unit (12) is a screw compressor heat pump unit.
5. The automatic control system for matching operation of the cooling tower fan and the circulating pump according to claim 1, wherein: the compression system (2) is composed of a cooling water pipe temperature controller (21) and a water inlet temperature controller (22), and the output end of the water inlet temperature controller (22) is electrically connected with the input end of the cooling system (3).
6. The automatic control system for matching operation of the cooling tower fan and the circulating pump according to claim 1, wherein: the cooling system (3) is composed of a circulating water pump (31) and a cooling tower fan (32), and the circulating water pump (31) is a horizontal end suction pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067790.8A CN110763074A (en) | 2019-01-24 | 2019-01-24 | Automatic control system for matching operation of cooling tower fan and circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067790.8A CN110763074A (en) | 2019-01-24 | 2019-01-24 | Automatic control system for matching operation of cooling tower fan and circulating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110763074A true CN110763074A (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910067790.8A Pending CN110763074A (en) | 2019-01-24 | 2019-01-24 | Automatic control system for matching operation of cooling tower fan and circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110763074A (en) |
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2019
- 2019-01-24 CN CN201910067790.8A patent/CN110763074A/en active Pending
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