CN105388929A - Fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment - Google Patents
Fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment Download PDFInfo
- Publication number
- CN105388929A CN105388929A CN201510899745.0A CN201510899745A CN105388929A CN 105388929 A CN105388929 A CN 105388929A CN 201510899745 A CN201510899745 A CN 201510899745A CN 105388929 A CN105388929 A CN 105388929A
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- Prior art keywords
- water
- temperature
- circulating cooling
- vapor compression
- refrigeration
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Other Air-Conditioning Systems (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment. The fouling on-line monitoring device includes a circulating cooling water system, a constant-temperature water bath system, a monitoring system and a refrigeration system; a lower water tank, a circulating water pump, an upper water tank, a heat exchange tube and a flow meter which are connected in series with one another so as to form the circulating cooling water system; the constant-temperature water bath system includes a water bath slot and three heating pipes arranged in the water bath slot; the heat exchange tube passes through the water bath slot; according to the monitoring system, a thermal resistor, a flow meter and a three-electrode corrosion rate sensor are connected with an analog quantity input module, so that data can be provided for an external industrial personal computer; and the refrigeration system comprises a compressor, a liquid storage device, an air cooled condenser, an expansion valve, an evaporator, a pressure controller, a PID regulator, a frequency converter, a primary water tank, a primary water pump and a secondary water pump. According to the fouling on-line monitoring device of the invention, based on the cascade control technology and vapor compression refrigeration technology, control precision of circulating cooling water is high, and adjustment time is short.
Description
Technical field
The invention belongs to technical field of environment protection equipment, relate to the dirt on-Line Monitor Device that vapor compression refrigeration regulates circulating cooling coolant-temperature gage.
Background technology
Existing on-Line Monitor Device equipment adopts traditional air cooling way to regulate recirculated cooling water influenced by environmental temperature once environment temperature will lose cooling effect higher than 28 degree, and precision is not high, and regulating time is long.The present invention adopts Pistonless compressor to regulate the water temperature of recirculated cooling water as refrigeration modes and serials control mode, has not by such environmental effects and the high advantage of precision.
Summary of the invention
The object of the present invention is to provide vapor compression refrigeration to regulate the dirt on-Line Monitor Device of circulating cooling coolant-temperature gage, solve existing equipment influenced by ambient temperature not high for recirculated cooling water temperature control precision, the problem that regulating time is long.
The technical solution adopted in the present invention comprises recirculating cooling water system, water bath with thermostatic control system, monitoring system, refrigeration system;
Described recirculating cooling water system is connected by lower header, water circulating pump, upper water box, heat exchanger tube, flowmeter successively; Water in lower header is extracted into upper water box by water circulating pump, and the water of upper water box is flowed in heat exchanger tube by oneself overflow, does like this and mainly steadily, prevents the abtragung of current from being degraded by the dirt of heat exchanger tube in order to what allow current not containing bubble.The effect of flowmeter conveniently regulates the flow velocity of water to flow through the flow velocity of heat exchanger tube accurately at certain numerical value with control valve.
Described water bath with thermostatic control system comprises water bath and three heating tubes be placed in water bath, and heat exchanger tube is through water bath; In order to allow whole bath temperature evenly so put three heating tubes, heating tube can guarantee that water-bath is in setting constant temperature, and heating tube is connected to power supply by contactor, and contactor break-make is controlled by digital output module by host computer.Operating personnel are by the temperature needed for host computer input, and water-bath will automatic constant-temperature.
Described monitoring system is connected with Analog input mModule with three electrode erosion rate sensors by thermal resistance, flowmeter, provides data to outside industrial computer;
Described refrigeration system comprises compressor, liquid reservoir, air-cooled condenser, expansion valve, evaporator, pressure controller, PID regulator, frequency converter, water tank, a water pump and a secondary water pump;
Steam-type compressor extracts cold-producing medium and reaches refrigeration object from evaporating dish, gasified refrigerant through steam-type compressor pressurizes laggard enter air-cooled condenser liquefaction, liquefied refrigerant enters liquid reservoir, through expansion valve again enter evaporating dish vaporization.By a water pump circulation, made cold liquid is stored in a water tank after evaporator refrigeration.The temperature of a water tank adopts return difference mode to control by temperature controller.
For thermostatic control upper water box water temperature, temperature value passes in PID regulator by upper water box temperature sensor, PID regulator controls frequency converter output frequency by the deviation comparing measured value and set-point and completes accurate control to upper water box to secondary water pump, and overall control mode adopts serials control mode.
Further, described upper water box be provided with run-down pipe between lower header and be communicated with lower header and prevent from leaking.
Further, described heating tube is made up of heating rod and controllable silicon, and controllable silicon connects outside industrial computer.
Further, the thermal resistance of described temperature controller is located in a water tank, and temperature controller is connected with compressor by contactor, PID regulator is connected with thermal resistance, thermal resistance is located in lower header, and PID regulator is connected with frequency converter, and frequency converter is connected with secondary water pump.
Further, described steam-type compressor operating is between low pressure 0.1MPa, high pressure 1MPa.
The invention has the beneficial effects as follows and make the control accuracy of recirculated cooling water high by serials control technology and vapor compression refrigeration technology, regulating time is short.
Accompanying drawing explanation
Fig. 1 is that the present invention illustrates monitoring device structural representation.
In figure: 1. lower header, 2. water circulating pump, 3. upper water box, 4. heat exchanger tube, 5. flowmeter, 6. run-down pipe, 7. water bath, 8. heating tube, 9. three electrode erosion rate sensors, 10. wall temperature sensor, 11. outlet temperature sensors, 12. inlet temperature sensors, 13. bath temperature sensors, 14. upper water box temperature sensors, 15.PID regulator, 16. frequency converters, No. 17. 2 water pumps, 18. heat interchanger, No. 19. water tanks, 20. heat interchanger, No. 21. water pumps, 22. evaporators, 23. evaporating dishes, 24. water tank temperature sensors, 25. temperature controllers, 26. steam-type compressors, 27. pressure controllers, 28. air-cooled condensers, 29. liquid reservoirs, 30. expansion valves.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Vapor compression refrigeration of the present invention regulates the dirt on-Line Monitor Device of circulating cooling coolant-temperature gage as shown in Figure 1, lower header 1 exports and is connected with upper water box 3 entrance through circulating cooling pump 2, upper water box 3 exports and is connected with heat exchanger tube 4 entrance, heat exchanger tube 4 exports and is connected with flowmeter 5 entrance, and flowmeter 5 exports and is connected with lower header 1 entrance.Water bath 7 heating pipe built-in 8, heat exchanger tube 4, three electrode erosion rate sensor 9 are attached on heat exchanger tube 4, and wall temperature sensor 10, outlet temperature sensor 11, inlet temperature sensor 12, bath temperature sensor 13 are connected with heat exchanger tube 4 respectively.Add the upper lower header of run-down pipe 6 connection for preventing upper water box 3 overflow to prevent from leaking.
Steam-type compressor 26 exports and is connected with air-cooled condenser 28 entrance, air-cooled condenser 28 exports and is connected with liquid reservoir 29 entrance, liquid reservoir 29 exports and is connected with expansion valve 30 entrance, expansion valve 30 exports and is connected with evaporating dish 23 entrance, and evaporator 22 exports and is connected with steam-type compressor 26 low-pressure inlet.Evaporator 22 exports and is connected with a water pump 21, and No. one time water pump 21 is connected with heat interchanger 20 entrance in a water tank 19, and heat interchanger 20 exports and is connected with evaporator 22.A water tank 19 exports and is connected with secondary water pump 17, and secondary water pump 17 is connected with heat interchanger 18 entrance in lower header 1, and heat interchanger 18 exports and is connected with a water tank 19.Pressure controller 27 connects low pressure sampled point and high pressure sampled point, and low pressure sampled point is at steam-type compressor 26 low-pressure medium input end P1, and high pressure sampled point is at compressor 2 high-pressure gaseous medium output terminal P2.Pressure controller 27 normally opened contact output terminal is connected with steam-type compressor 26. and once water tank temperature sensor 24 is connected with temperature controller 25 temperature input interface, and temperature controller 25 relay output interface is connected with steam-type compressor 26.Upper water box temperature sensor 14 is connected with PID regulator 15 sensor input port, and PID regulator 15 communication output mouth is connected with frequency converter 16 signal input port, and frequency converter 16 frequency conversion output port is connected with secondary water pump 17.
Steam-type compressor 26 import and outlet arrange two force samples points, by pressure controller 27, steam-type compressor 26 are operated between low pressure 0.1MPa, high pressure 1MPa.Now steam-type compressor 26 operates in the object that most effective interval reaches energy-saving and cost-reducing.
Present device adopts serials control: two regulators are together in series work, and the output of one of them regulator obtains system as the set-point of another regulator.The control accuracy being solved recirculated cooling water by serials control technology and vapor compression refrigeration technology is poor, and regulating time is long, requires high problem to environment temperature.
The above is only to better embodiment of the present invention, not any pro forma restriction is done to the present invention, every any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (5)
1. vapor compression refrigeration regulates the dirt on-Line Monitor Device of circulating cooling coolant-temperature gage, it is characterized in that: comprise recirculating cooling water system, water bath with thermostatic control system, monitoring system, refrigeration system;
Described recirculating cooling water system is connected by lower header, water circulating pump, upper water box, heat exchanger tube, flowmeter successively; Water in lower header is extracted into upper water box by water circulating pump, and the water of upper water box flows in heat exchanger tube by oneself overflow;
Described water bath with thermostatic control system comprises water bath and three heating tubes be placed in water bath, and heat exchanger tube is through water bath;
Described monitoring system is connected with Analog input mModule with three electrode erosion rate sensors by thermal resistance, flowmeter, provides data to outside industrial computer;
Described refrigeration system comprises compressor, liquid reservoir, air-cooled condenser, expansion valve, evaporator, pressure controller, PID regulator, frequency converter, water tank, a water pump and a secondary water pump;
Steam-type compressor extracts cold-producing medium and reaches refrigeration object from evaporating dish, gasified refrigerant through steam-type compressor pressurizes laggard enter air-cooled condenser liquefaction, liquefied refrigerant enters liquid reservoir, evaporating dish vaporization is again entered through expansion valve, by a water pump circulation, made cold liquid is stored in a water tank after evaporator refrigeration, the temperature of a water tank adopts return difference mode to control by temperature controller, temperature value passes in PID regulator by upper water box temperature sensor, PID regulator controls frequency converter output frequency by the deviation comparing measured value and set-point and completes accurate control to upper water box to secondary water pump.
2. regulate the dirt on-Line Monitor Device of circulating cooling coolant-temperature gage according to vapor compression refrigeration described in claim 1, it is characterized in that: described upper water box be provided with run-down pipe between lower header and be communicated with lower header and prevent from leaking.
3. regulate the dirt on-Line Monitor Device of circulating cooling coolant-temperature gage according to vapor compression refrigeration described in claim 1, it is characterized in that: described heating tube is made up of heating rod and controllable silicon, controllable silicon connects outside industrial computer.
4. the dirt on-Line Monitor Device of circulating cooling coolant-temperature gage is regulated according to vapor compression refrigeration described in claim 1, it is characterized in that: the thermal resistance of described temperature controller is located in a water tank, temperature controller is connected with compressor by contactor, PID regulator is connected with thermal resistance, thermal resistance is located in lower header, PID regulator is connected with frequency converter, and frequency converter is connected with secondary water pump.
5. regulate the dirt on-Line Monitor Device of circulating cooling coolant-temperature gage according to vapor compression refrigeration described in claim 1, it is characterized in that: described steam-type compressor operating is between low pressure 0.1MPa, high pressure 1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899745.0A CN105388929A (en) | 2015-12-08 | 2015-12-08 | Fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899745.0A CN105388929A (en) | 2015-12-08 | 2015-12-08 | Fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment |
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| CN105388929A true CN105388929A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510899745.0A Pending CN105388929A (en) | 2015-12-08 | 2015-12-08 | Fouling on-line monitoring device for vapor compression refrigeration circulating cooling water temperature adjustment |
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| CN (1) | CN105388929A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048624A (en) * | 2016-07-13 | 2016-10-26 | 金保全 | Closed circulation water zero draining system and use method |
| CN107062929A (en) * | 2017-05-02 | 2017-08-18 | 东北电力大学 | The purpose sweep frequency electromagnetic scale suppression system and its combustion adjustment method of power station water-cooled condenser |
| CN109555677A (en) * | 2018-11-08 | 2019-04-02 | 信尔胜机械（江苏）有限公司 | A kind of intelligent detection device of air compressor |
| CN110756243A (en) * | 2019-11-26 | 2020-02-07 | 深圳大学 | Constant temperature control water bath device and application |
| CN111398526A (en) * | 2020-03-31 | 2020-07-10 | 广东省石油与精细化工研究院 | Recirculated cooling water monitoring heat transfer system |
| CN112284449A (en) * | 2020-10-19 | 2021-01-29 | 东北电力大学 | Experimental device for be used for testing electromagnetism and press down dirt equipment performance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106048624A (en) * | 2016-07-13 | 2016-10-26 | 金保全 | Closed circulation water zero draining system and use method |
| CN107062929A (en) * | 2017-05-02 | 2017-08-18 | 东北电力大学 | The purpose sweep frequency electromagnetic scale suppression system and its combustion adjustment method of power station water-cooled condenser |
| CN109555677A (en) * | 2018-11-08 | 2019-04-02 | 信尔胜机械（江苏）有限公司 | A kind of intelligent detection device of air compressor |
| CN110756243A (en) * | 2019-11-26 | 2020-02-07 | 深圳大学 | Constant temperature control water bath device and application |
| CN111398526A (en) * | 2020-03-31 | 2020-07-10 | 广东省石油与精细化工研究院 | Recirculated cooling water monitoring heat transfer system |
| CN112284449A (en) * | 2020-10-19 | 2021-01-29 | 东北电力大学 | Experimental device for be used for testing electromagnetism and press down dirt equipment performance |
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Application publication date: 20160309 |
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