CN102734996A - Low-pressure vapor injection water absorption type refrigerating plant with automatic control function - Google Patents
Low-pressure vapor injection water absorption type refrigerating plant with automatic control function Download PDFInfo
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- CN102734996A CN102734996A CN201110090861XA CN201110090861A CN102734996A CN 102734996 A CN102734996 A CN 102734996A CN 201110090861X A CN201110090861X A CN 201110090861XA CN 201110090861 A CN201110090861 A CN 201110090861A CN 102734996 A CN102734996 A CN 102734996A
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Abstract
The invention discloses a low-pressure vapor injection water absorption type refrigerating plant with an automatic control function, and the refrigerating plant comprises an evaporator, a main condenser, a main ejector, an auxiliary condenser, an auxiliary ejector, a freezing water pool and a cooling water pool, the refrigerating plant is characterized by further comprising an automatic control system controller, an onsite display operation screen unit, a remote monitoring unit and an automatic control system unit composed of electronic instrument sensors and electric pneumatic actuating elements, wherein the electronic instrument sensors and the electric pneumatic actuating elements are installed on devices, and are connected with the automatic control system controller through conducting wires, and the automatic control system controller is in communication connection with the remote monitoring unit and the onsite display operation screen unit. The low-pressure vapor injection water absorption type refrigerating plant disclosed by the invention performs concentrated control and data analysis on the device operation of a main body of a low-pressure vapor injection refrigerator device through the automatic control system unit and is provided with interlocking and protecting functions to enhance the operation reliability and the operation safety of controlled devices.
Description
Technical field
the present invention relates to a kind of refrigeration plant; Particularly relate to a kind of employing low-pressure steam and do medium; Water is the low-pressure steam injection water absorption type refrigerating plant with automatic control function of cold-producing medium, is to the improvement of existing steam-refrigerated equipment, belongs to the industrial refrigeration technology.
Background technology
traditional steam-refrigerated technology of high pressure it is generally acknowledged that the economic work steam pressure is 07～1.4Mpa; Consider the concrete condition of steam pipework loss and steam supply boiler; At least more than 0.5Mpa, the following low-pressure steam of the 0.3Mpa that exists in the industry then can not be utilized the working steam pressure of selecting for use, and it is low to exist refrigerating efficiency; Shortcomings such as power consumption is big, and work vapour source is limited.
publication number is the Chinese utility model patent " a kind of low-pressure steam refrigerating plant " of CN2145352 and the Chinese utility model patent that publication number is CN2425328 " steam sprays vacuum freezing water device "; Industrial exhaust steam resource to present every profession and trade emptying; Develop and a kind ofly can utilize the work refrigerating plant of medium of following low-pressure steam of 0.3Mpa or industrial exhaust steam, solved the problem of industrial in the past exhaust steam resource emptying.But find also to exist some defectives in practice; This refrigerating plant that for example provides all be adopt evaporimeter 1.5 meters of master's cooler diameters, evaporimeter between master's cooler main ejector be connected to 3 groups structure; It is little to exist evaporating space, and causes the little problem of refrigerating capacity, wishes to get big refrigerating capacity; Must adopt the parallel connection of many cover unit modes to accomplish, so auxiliary facility investment and floor space are all big.The applicant improves above-mentioned low-pressure steam refrigerating plant structure; Having provided publication number is the utility model patent " a kind of multiple-effect steam injection water Absorption Refrigerator " of 201517869U; This multiple-effect steam injection water Absorption Refrigerator includes evaporimeter, main condenser, main ejector, auxiliary condenser and auxiliary ejector; Be characterized in that the diameter of said evaporimeter and the diameter of main condenser all are at least 2 meters; Adopt 5 groups of above multiple-effect main ejectors to connect between said evaporimeter and the main condenser, have that the evaporating space of water in equipment is big, refrigerating capacity big (can reach 5,000,000 kilocalories/time more than), working steam pressure low (0.1-0.25Mpa), take up an area of the few characteristics of the little and whole related investment in space.
yet; Existing low-pressure steam injection refrigeration machine all is in hand gear to be regulated; Like publication number is that the utility model patent " a kind of low-pressure steam refrigerating plant " of CN2145352, the utility model patent that publication number is CN2425328 " steam sprays vacuum freezing water device " and publication number are the utility model patent " a kind of multiple-effect steam injection water Absorption Refrigerator " of 201517869U etc.; In practical application, have following defective: 1. each link of equipment all need be equipped with machinery display list on the spot; The data that the debugging start process will be observed each point, the measured point is checked in normal operation on time, causes management inconvenience and starts shooting cumbersome.
at metallurgy industry, the waste heat pressure that especially heater for rolling steel produced is extremely unstable, causes fluctuation of service for traditional steam-refrigerated machine of manual adjustments, has influenced refrigerating efficiency.
make power steam, cooling water, cold water consumption big because manual adjustments can not change and instantaneous adjusting according to the day and night temperature in season, and energy-saving efficiency is low.
Summary of the invention
the object of the invention is exactly to adopt hand gear to regulate the problem that exists to existing steam-refrigerated machine, and a kind of new low-pressure steam injection water absorption type refrigerating plant with automatic control function is provided.This low-pressure steam injection water absorption type refrigerating plant with automatic control function is that a kind of employing low-pressure steam is done medium; Water is the large-scale refrigerating plant of cold-producing medium; Adopt be evaporimeter connect the device structure that adopts the multiple-effect main ejector between master's cooler; Through the robot control system(RCS) unit low-pressure steam injection refrigeration machine equipment body is carried out centralized Control, the data analysis of equipment operation, and be provided with chain and protection, strengthen controlled device reliability of operation and security.
The technical scheme that
the present invention provides is: this low-pressure steam injection water absorption type refrigerating plant with automatic control function; Include evaporimeter, main condenser, main ejector, auxiliary condenser, auxiliary ejector, freezing pond and cooling pond; Adopt many group main ejectors to connect between evaporimeter and the main condenser; Be connected through waterpipe or jet chimney between evaporimeter, main condenser, main ejector, auxiliary condenser, auxiliary ejector, freezing pond and the cooling pond; Be characterized in also including in this low-pressure steam injection water absorption type refrigerating plant by automatic controlling system device, on-the-spot display operation screen unit (touch large-size screen monitors flow for displaying data and setting operation), remote monitoring unit (computer remote monitoring and data preparation), be installed in the robot control system(RCS) unit that electronic instrument sensor and electropneumatic executive component on each equipment are formed; The electronic instrument sensor that wherein is installed on each equipment all is connected with the automatic controlling system device through lead with the electropneumatic executive component, and the automatic controlling system device is connected with on-the-spot display operation screen unit communications with the remote monitoring unit.
are better to realize the object of the invention, and the said electronic instrument sensor that is installed on each equipment is made up of the first temperature sensor T1～the 7th temperature sensor T7, first flow meter F1～the 5th flowmeter F5, the first steam pressure sensor P1～second steam pressure sensor P2, the 3rd steam pressure sensor P3～the 9th steam pressure sensor P9, first vacuum pressure sensor-P1～the 7th vacuum pressure sensor-P7, the first liquid-level switch LK1～the 3rd liquid-level switch LK3, the 4th liquid-level switch LK4～the 8th liquid-level switch LK8, liquid level sensor LE.
are better to realize the object of the invention, and the said electropneumatic executive component that is installed on each equipment is made up of pneumatic operated valve QK, the first electric control valve PV1～the 7th electric control valve PV7, the first flow control valve FC1～second flow control valve FC2, pressure-reducing valve JY, electronic water compensating valve FB, mechanical water compensating valve JX.
are better to realize the object of the invention, and the control program of computer is: step 001: starting up's main program.
step 002: whether the data of judging collection in worksite have fault or gross error; If wrong system ejects failure cause and abort situation; The gross error fault is then returned step 001 and is restarted main program, if fault-free carry out step 003 after 10 seconds.
step 003: according to the vacuum pressure sensor feedback data open cold condenser system water flow control valve that is installed on each injector.
step 004: according to the method for operation of the mimic water-depth control water pump system of the level sensor in freezing pond and cooling pond feedback, thus constant water level.
Whether
step 005: it is up to standard to detect the injector vacuum pressure, if up to standard more than 30 seconds the time, carry out step 006, transfers to make and carry out step 006 again after up to standard if flow is regulated in continuation not up to standard.
step 006: the entry condition of opening jet blower; The entering system manually controls/preference pattern of control automatically, when selecting control automatically utilization PID simulation trial mode regulate automatically the nozzle aperture with the evaporimeter effluent temperature constancy in setting value; Can on control flow, manually import the jet blower aperture when selecting manually control, the on-spot injection mouth reached specify aperture to regulate the evaporimeter leaving water temperature; This moment, step 006 was during equipment runs well, if this stage breaks down, system can judge automatically; Be fatal staging error fault or regular grade fault; Fatal staging error fault gets into step 007 automatically and shuts down, and ejects fault and sees cautious position, and the regular grade fault only sends warning; Eject fault and see cautious position, equipment normally moves.
step 007: shut down, crawl is shut down knob, closes jet blower-close flow valve-water pump-shut down procedure control.
NM other part of the present invention of
above technical scheme and publication number are that the utility model patent " a kind of multiple-effect steam injection water Absorption Refrigerator " of 201517869U is identical.
compared with prior art; The invention has the beneficial effects as follows: the low-pressure steam injection refrigeration machine is carried out centralized Control, the data analysis of equipment operation; And be provided with chain and protection; Strengthen controlled device reliability of operation and security, when omnibearing monitoring management and security of operation ensure to equipment, also accomplished one-touch service: equipment start-stop control and monitoring running state; System's operation and state dynamic image show; Make pond liquid level constant according to liquid level setting control chilled water pump and cooling water pump; The energy-saving run of the best start and stop of equipment; The parameter overload alarm, the equipment running status abnormal failure is reported to the police and the maintenance of equipment pre-alarm; Data acquisition, energy management, logout and form and printing thereof; The apparatus settings temperature is controlled the jet amount of nozzle valve with the mode of PID and is reached effluent temperature constancy in setting value.
Description of drawings
Fig. 1 is that equipment of the present invention connects sketch map.
Fig. 2 is electronic instrument sensor of the present invention and electropneumatic executive component scheme of installation.
Fig. 3 is a computer-controlled program flow chart of the present invention.
The specific embodiment
Technical scheme of the present invention is further set forth below in conjunction with embodiment and accompanying drawing in
.
The embodiment that
provide is installed on the circulating cooling system of large-scale steel-making furnace apparatus, utilizes waste heat that this steel-making furnace apparatus produces as the refrigerating plant of working media (waste heat pressure be 0.2Mpa, when the waste heat amount is up to 15T/).Design parameter is: refrigerating capacity 2,000,000 kilocalories/hour, the chilled water temperature difference: 10 ℃+1, work waste heat pressure: 0.2MPa.
are like Fig. 1～shown in Figure 2; This multiple-effect steam injection water Absorption Refrigerator includes evaporimeter ZFQ, main condenser ZLQ, main ejector ZPS, the first auxiliary cooler 1FLQ and the second auxiliary cooler 2FLQ, the first auxiliary ejector 1FPS and the second auxiliary ejector 2FPS; Wherein the diameter of the diameter of evaporimeter ZFQ and main condenser ZLQ is 2 meters; Adopt 5 groups of multiple-effect main ejector ZPS to connect between evaporimeter ZFQ and the main condenser ZLQ; Be connected through waterpipe or jet chimney between evaporimeter ZFQ, main condenser ZLQ, main ejector ZPS, the first auxiliary cooler 1FLQ and the second auxiliary cooler 2FLQ, the first auxiliary ejector 1FPS and the second auxiliary ejector 2FPS, freezing pond COOL and the cooling pond HEAR; Also include by automatic controlling system device 02, on-the-spot display operation screen unit 04 (touch large-size screen monitors flow for displaying data and setting operation), remote monitoring unit 05 (computer remote monitoring and data preparation) in this low-pressure steam injection water absorption type refrigerating plant, be installed in the robot control system(RCS) unit that electronic instrument sensor 01 and electropneumatic executive component 03 on each equipment are formed; The electronic instrument sensor 01 that wherein is installed on each equipment all is connected with automatic controlling system device 02 through lead with electropneumatic executive component 03, and unit 04 communication is connected automatic controlling system device 02 with on-the-spot display operation screen with remote monitoring unit 05.
Visible among
Fig. 2; The electronic instrument sensor that is installed on each equipment is made up of the first temperature sensor T1～the 7th temperature sensor T7, first flow meter F1～the 5th flowmeter F5, the first steam pressure sensor P1～second steam pressure sensor P2, the 3rd steam pressure sensor P3～the 9th steam pressure sensor P9, first vacuum pressure sensor-P1～the 7th vacuum pressure sensor-P7, the first liquid-level switch LK1～the 3rd liquid-level switch LK3, the 4th liquid-level switch LK4～the 8th liquid-level switch LK8, liquid level sensor LE; Wherein: the first temperature sensor T1; Detect total vapor (steam) temperature; Show instantaneous numerical value, system makes the trend record figure, the consersion unit running status; System makes analysis-by-synthesis, makes energy-conservation control mode.
second temperature sensor T2 detects the freezing return water temperature of user, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status, and system makes analysis-by-synthesis, makes energy-conservation control mode.
three-temperature sensor T3 detects the cooling system supply water temperature, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status, and system makes analysis-by-synthesis, makes energy-conservation control mode.
the 4th temperature sensor T4, checkout equipment refrigeration leaving water temperature shows instantaneous numerical value, system makes the trend record figure, utilizes this value to carry out PID simulation trial output signal controlling jet blower aperture, reaches constant setting value.
the 5th temperature sensor T5 detects the condenser leaving water temperature, shows that instantaneous number system makes the trend record figure, and consersion unit running status, system are made analysis-by-synthesis and made energy-conservation control mode.
the 6th temperature sensor T6 detects the cooling pond leaving water temperature, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status.
the 7th temperature sensor T7 detects the chilled water temperature to the user, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status.
first flow meter F1 detects steam admission total flow, shows instantaneous numerical value, and system makes the trend record figure, consersion unit running status, and energy consumption accumulative total.
second flowmeter F2 detects the freezing circling water flow rate of user, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status.
the 3rd flowmeter F3 detects cooling system water supply total flow, shows instantaneous numerical value, and system makes the trend record figure, and the consersion unit running status is regulated flow valve, the constant water pit level.
the 4th flowmeter F4 detects cooling water and returns to the cooling system flow, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status.
the 5th flowmeter F5 detects chilled water to customer flow, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status.
first steam pressure sensor P1 detects total steam pressure, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status.
second steam pressure sensor P2 detects sub-cylinder pressure, shows instantaneous numerical value, and system makes the trend record figure, the consersion unit running status.
the 3rd steam pressure sensor P3～the 9th steam pressure sensor P9; Detect jet blower pipeline pressure, show instantaneous numerical value, system makes the trend record figure; Consersion unit running status, reaction vapor parameter and analysis spraying mouth aperture.
first vacuum pressure sensor-P1～the 7th vacuum pressure sensor-P7; Detect injector monitoring point vacuum pressure condition, show instantaneous numerical value, system makes the trend record figure; The consersion unit running status is used for having judged whether the refrigeration condition.
first liquid-level switch LK1-the 3rd liquid-level switch LK3 detects chilled water pool water level state, and logicality is judged the unlatching chilled water pump during start.
first liquid-level switch LK4-the 8th liquid-level switch LK8 detects the cooling bay water position status, and logicality is judged the unlatching cooling water pump during start.
liquid level sensor LE detects cooling bay water level analog depth, the start time control but system water supply flow valve that freezes, and essence is constant level but.
Also visible among
Fig. 2; The electropneumatic executive component that is installed on each equipment is made up of pneumatic operated valve QK, the first electric control valve PV1～the 7th electric control valve PV7, the first flow control valve FC1～second flow control valve FC2, pressure-reducing valve JY, electronic water compensating valve FB, mechanical water compensating valve JX; Wherein: pneumatic operated valve QK unexpected the power failure occur in system, when equipment can't normally be moved; Automatically close pneumatic operated valve, prevent the cooling bay overflow.
first electric control valve PV1～the 7th electric control valve PV7 is used to regulate the jet blower aperture, and the steam regulation flow reaches refrigeration.
first flow control valve FC1 regulates the cooling system water supply flow, reaches the constant and system's refrigeration requirement of liquid level.
The second flow control valve FC2 regulates cooling system to auxiliary cooler water supply flow and refrigeration requirement;
pressure-reducing valve JY, system's steam decompressor.
electronic water compensating valve FB realizes the moisturizing of freezing pond according to liquid level feedback, in mechanical water compensating valve input down out of control.
mechanical water compensating valve JX according to the feedback of liquid level, realizes giving the moisturizing of freezing pond.
During
work; On-the-spot be equipped with have a DI; DO; AI, the automatic controlling system device 02 of AO handling property and on-the-spot display operation screen unit 04 usefulness signal rigid line connected mode are transferred to the on-the-spot all acquisition instruments and the signal of executing agency in the automatic controlling system device 02, and automatic controlling system device 02 sends fill order and reaches electropneumatic executive component 03; Be transferred to through data in the touch-screen of on-the-spot display operation screen unit 04, show as the scene.Automatic controlling system device 02 is transferred to all data-signals in the computer of remote monitoring unit 05 with optical fiber through Ethernet interface again,
Mark: FF-D is a gas-distributing cylinder among
figure, and COOL is freezing pond, and HEAR is the cooling pond; COOLPUMP is a chilled water pump, and HEARPUMP is a cooling water pump, and ZQGL is a jet chimney; ZZ-C is the main steam range road of entering system, and WW-B is the water pipe of cooling system to main condenser, and CC-A is back to the water pipe of evaporimeter for the user; ZY is to service pipe, and ZL is to the cooling system water pipe.
are as shown in Figure 3, and computer-controlled program flow chart of the present invention has the following steps: step 001: starting up's main program.
step 002: whether the data of judging collection in worksite have fault or gross error; If wrong system ejects failure cause and abort situation; The gross error fault is then returned step 001 and is restarted main program, if fault-free carry out step 003 after 10 seconds.
step 003: according to the vacuum pressure sensor feedback data open cold condenser system water flow control valve that is installed on each injector.
step 004: according to the method for operation of the mimic water-depth control water pump system of the level sensor in freezing pond and cooling pond feedback, thus constant water level.
Whether
step 005: it is up to standard to detect the injector vacuum pressure, if up to standard more than 30 seconds the time, carry out step 006, transfers to make and carry out step 006 again after up to standard if flow is regulated in continuation not up to standard.
step 006: the entry condition of opening jet blower; The entering system manually controls/preference pattern of control automatically, when selecting control automatically utilization PID simulation trial mode regulate automatically the nozzle aperture with the evaporimeter effluent temperature constancy in setting value; Can on control flow, manually import the jet blower aperture when selecting manually control, the on-spot injection mouth reached specify aperture to regulate the evaporimeter leaving water temperature; This moment, step 006 was during equipment runs well, if this stage breaks down, system can judge automatically; Be fatal staging error fault or regular grade fault; Fatal staging error fault gets into step 7 automatically and shuts down, and ejects fault and sees cautious position, and the regular grade fault only sends warning; Eject fault and see cautious position, equipment normally moves.
step 007: shut down, crawl is shut down knob, closes jet blower-close flow valve-water pump-shut down procedure control.
Claims (4)
1. low-pressure steam injection water absorption type refrigerating plant with automatic control function; Include evaporimeter, main condenser, main ejector, auxiliary condenser, auxiliary ejector, freezing pond and cooling pond; Adopt many group main ejectors to connect between evaporimeter and the main condenser; Be connected through waterpipe or jet chimney between evaporimeter, main condenser, main ejector, auxiliary condenser, auxiliary ejector, freezing pond and the cooling pond; It is characterized in that also including in this low-pressure steam injection water absorption type refrigerating plant by automatic controlling system device (02), on-the-spot display operation screen unit (04), remote monitoring unit (05), be installed in the robot control system(RCS) unit that electronic instrument sensor (01) and electropneumatic executive component (03) on each equipment are formed; The electronic instrument sensor (01) that wherein is installed on each equipment all is connected with automatic controlling system device (02) through lead with electropneumatic executive component (03), and unit (04) communication is connected automatic controlling system device (02) with on-the-spot display operation screen with remote monitoring unit (05).
2. the low-pressure steam injection water absorption type refrigerating plant with automatic control function according to claim 1 is characterized in that saidly being installed in electronic instrument sensor on each equipment (P1)～the 7th (P7), first liquid-level switch (LK1)～the 3rd liquid-level switch (LK3), the 4th liquid-level switch (LK4)～the 8th liquid-level switch (LK8), liquid level sensor LE forming vacuum pressure sensor by first temperature sensor (T1)～the 7th temperature sensor (T7), first flow meter (F1)～the 5th flowmeter (F5), first steam pressure sensor (P1)～second steam pressure sensor (P2), the 3rd steam pressure sensor (P3)～the 9th steam pressure sensor (P9), first vacuum pressure sensor.
3. the low-pressure steam injection water absorption type refrigerating plant with automatic control function according to claim 1 is characterized in that the said electropneumatic executive component that is installed on each equipment is made up of pneumatic operated valve (QK), first electric control valve (PV1)～the 7th electric control valve (PV7), first flow control valve (FC1)～second flow control valve (FC2), pressure-reducing valve (JY), electronic water compensating valve (FB), mechanical water compensating valve (JX).
4. the low-pressure steam injection water absorption type refrigerating plant with automatic control function according to claim 1 is characterized in that the control program of computer is:
Step (001): starting up's main program;
Step (002): whether the data of judging collection in worksite have fault or gross error; If wrong system ejects failure cause and abort situation; The gross error fault is then returned step (001) and is restarted main program, if fault-free is carried out step (003) after 10 seconds;
Step (003): according to the vacuum pressure sensor feedback data open cold condenser system water flow control valve that is installed on each injector;
Step (004): according to the method for operation of the mimic water-depth control water pump system of the level sensor in freezing pond and cooling pond feedback, thus constant water level;
Whether step (005): it is up to standard to detect the injector vacuum pressure, if up to standard more than 30 seconds the time, carries out step (006), transfers to make and carries out step (006) again after up to standard if flow is regulated in continuation not up to standard;
Step (006): open the entry condition of jet blower, the entering system manually controls/preference pattern of control automatically, and utilization PID simulation trial mode is regulated the nozzle aperture automatically when selecting control automatically, with the evaporimeter effluent temperature constancy in setting value; Can on control flow, manually import the jet blower aperture when selecting manually control, the on-spot injection mouth reached specify aperture to regulate the evaporimeter leaving water temperature; Step this moment (006) has been during equipment runs well; If this stage breaks down, system can judge automatically, be fatal staging error fault or regular grade fault; Fatal staging error fault gets into step (007) automatically and shuts down, and ejects fault and sees cautious position; The regular grade fault only sends warning, ejects fault and sees cautious position, and equipment normally moves;
Step (007): shut down, crawl is shut down knob, closes jet blower-close flow valve-water pump-shut down procedure control.
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| CN201110090861.XA CN102734996B (en) | 2011-04-12 | 2011-04-12 | Low-pressure vapor injection water absorption type refrigerating plant with automatic control function |
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| CN201110090861.XA CN102734996B (en) | 2011-04-12 | 2011-04-12 | Low-pressure vapor injection water absorption type refrigerating plant with automatic control function |
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| CN102734996B CN102734996B (en) | 2014-07-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791155A (en) * | 1997-06-06 | 1998-08-11 | Carrier Corporation | System for monitoring expansion valve |
| CN201225802Y (en) * | 2008-05-16 | 2009-04-22 | 大连冷冻机股份有限公司 | Automatic control system for large-sized waterhead heat pump |
| CN101435643A (en) * | 2008-12-12 | 2009-05-20 | 华南理工大学 | System and method for monitoring operation energy efficiency ratio of water chilling unit |
| CN201327582Y (en) * | 2008-12-11 | 2009-10-14 | 大连冰山嘉德自动化有限公司 | Intelligent control device for evaporative condenser |
| CN201517869U (en) * | 2009-10-16 | 2010-06-30 | 本溪光远环境工程有限公司 | Multiple-effect steam injection and water absorption type refrigerating machine |
| CN202092395U (en) * | 2011-04-12 | 2011-12-28 | 本溪光远环境工程有限公司 | Low-pressure steam jet water absorption type refrigeration device with self-control function |
-
2011
- 2011-04-12 CN CN201110090861.XA patent/CN102734996B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791155A (en) * | 1997-06-06 | 1998-08-11 | Carrier Corporation | System for monitoring expansion valve |
| CN201225802Y (en) * | 2008-05-16 | 2009-04-22 | 大连冷冻机股份有限公司 | Automatic control system for large-sized waterhead heat pump |
| CN201327582Y (en) * | 2008-12-11 | 2009-10-14 | 大连冰山嘉德自动化有限公司 | Intelligent control device for evaporative condenser |
| CN101435643A (en) * | 2008-12-12 | 2009-05-20 | 华南理工大学 | System and method for monitoring operation energy efficiency ratio of water chilling unit |
| CN201517869U (en) * | 2009-10-16 | 2010-06-30 | 本溪光远环境工程有限公司 | Multiple-effect steam injection and water absorption type refrigerating machine |
| CN202092395U (en) * | 2011-04-12 | 2011-12-28 | 本溪光远环境工程有限公司 | Low-pressure steam jet water absorption type refrigeration device with self-control function |
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