CN106016757A - High low temperature oil heating control system capable of achieving accurate temperature regulation - Google Patents

High low temperature oil heating control system capable of achieving accurate temperature regulation Download PDF

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Publication number
CN106016757A
CN106016757A CN201610503678.0A CN201610503678A CN106016757A CN 106016757 A CN106016757 A CN 106016757A CN 201610503678 A CN201610503678 A CN 201610503678A CN 106016757 A CN106016757 A CN 106016757A
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CN
China
Prior art keywords
control system
low temperature
electric
homoiothermic
pipeline
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.)
Pending
Application number
CN201610503678.0A
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Chinese (zh)
Inventor
周定山
祝新生
廖晓军
姜定坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU AODE MACHINERY CO Ltd
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SUZHOU AODE MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SUZHOU AODE MACHINERY CO Ltd filed Critical SUZHOU AODE MACHINERY CO Ltd
Priority to CN201610503678.0A priority Critical patent/CN106016757A/en
Publication of CN106016757A publication Critical patent/CN106016757A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters

Abstract

The invention discloses a high low temperature oil heating control system capable of achieving accurate temperature regulation. The high low temperature oil heating control system comprises an oil outlet pipeline, an oil return pipeline, a cooling device, a heating device, a pump and a cooling water system, wherein the heating device and the cooling device are converged to communicate with the oil outlet pipeline; the pump is in pipeline communication with the oil return pipeline, the heating device and the cooling device; after being shunted by a first electric three-way valve, the pump communicates with the cooling device and the heating device; the heating device comprises a heating pipe which communicates with the first electric three-way valve through a second electric three-way valve and a heat exchanger; and the heat exchanger communicates with the cooling water system. According to the high low temperature oil heating control system, the switching of heating and cooling can be automatically achieved, the temperature control accuracy is high, and the stability is good.

Description

A kind of high/low temperature deep fat control system of accurate homoiothermic
[technical field]
The invention belongs to technical field of temperature control, particularly relate to the high/low temperature deep fat control system of a kind of accurate homoiothermic.
[background technology]
Temperature controls to apply in modern manufacturing industry extremely wide, such as pharmacy, cosmetics reactor temperature control field.In prior art, using individually heating and cooling system to control temperature, use both manual switching modes to carry out cold and hot exchange, its precision controlling temperature is difficult to reach requirement, often results in the reaction efficiency and effect affecting in reactor;And control stability for superhigh temperature and ultralow temperature is poor.
Therefore, it is necessary to provide the high/low temperature deep fat control system of a kind of new accurate homoiothermic to solve the problems referred to above.
[summary of the invention]
It is an object of the present invention to provide the high/low temperature deep fat control system of a kind of accurate homoiothermic, it is possible to automatically carry out heating and cool down switching, and temperature control precision is high, good stability.
The present invention is achieved through the following technical solutions above-mentioned purpose: the high/low temperature deep fat control system of a kind of accurate homoiothermic, it includes outlet line, return line, chiller, heater, pumping and cooling water system, described heater connects with described outlet line after collecting with described chiller, described pumping and described return line, described heater and described chiller pipeline communication, described be pumped through first electric T-shaped valve shunting after respectively with described chiller, described heater connects, described heater includes adding heat pipe and heat exchanger by the second electric T-shaped valve with described first electric T-shaped valve connects, described heat exchanger connects with described cooling water system.
Further, also including that PLC controls device and temperature controller, described PLC controls device and described pumping, described first electric T-shaped valve electric connection, described temperature controller and described second electric T-shaped valve, described in add heat pipe electric connection.
Further, add heat pipe described in connect with described outlet line.
Further, add heat pipe described in connect with described heat exchanger.
Further, described chiller includes gas-liquid separator and the air compressor of described gas-liquid separator pipeline communication that the vaporizer connected with described pumping connects with described evaporator pipeline.
Further, also including expanding oil tank and gas collecting jar with ground-on cover plate, described gas collecting jar with ground-on cover plate connects with described pumping duct after collecting with described expansion oil tank.
Further, between described expansion oil tank and described gas collecting jar with ground-on cover plate, pipeline is connected and is provided with on this pipeline exhaust solenoid valve, and described exhaust solenoid valve controls device with described PLC and electrically connects.
Further, on the pipeline after described gas collecting jar with ground-on cover plate and described expansion oil tank collect, shunting is provided with first row hydraulic fluid port.
Further, add described in and on heat pipe, be provided with second row hydraulic fluid port.
Compared with prior art, having the beneficial effects that of the high/low temperature deep fat control system of a kind of accurate homoiothermic of the present invention: can automatically carry out heating and cool down switching, and temperature control precision is high, good stability.Concrete,
1) heater and refrigerating plant are integrated in unified pipeline, are obtained by automatic temperature-adjusting, set and need temperature automatic adjustment the first electric T-shaped valve to realize between temperature-controlled area, maintaining-30 DEG C~200 DEG C with the flow direction controlling heat conduction medium;
2) in heater, setting adds heat pipe and heat exchanger, and connected by the second electric T-shaped valve, control device by PLC and control flow and the power percentage of SCR control electrical heating output of the second electric three passes valve regulation cooling circuit, realize the automatic governing function of two kinds of heating modes, the temperature of stabilisation systems;
3) by realizing the connection with loop exit, its compact conformation by sharing a pipeline through the outlet of apparatus for supercooling and the outlet of heater, space is saved;
4) use integrated design, save the device space, and to refrigeration system compact Layout, save the energy that heat radiation is consumed, improve heating efficiency and the refrigerating efficiency of equipment.
[accompanying drawing explanation]
Fig. 1 is the module diagram of PLC in the embodiment of the present invention;
In figure, numeral represents:
1 expands oil tank;2 pumpings;3 vaporizers, 31 flow switches;
4 chillers, 41 condensers, 411 pressure-sensitive switches, 42 devices for drying and filtering, 43 expansion drums, 431 first electromagnetic valves, 44 expansion valves, 441 second electromagnetic valves, 45 gas-liquid separators, 46 air compressors, 47 oil point, 48 first temperature inductors;
5 heaters, 51 add heat pipe, 511 second row hydraulic fluid ports, 52 heat exchangers, 53 second electric T-shaped valves, 54 first pressure transducers, 55 overtemperature prote modules;
6 outlet line, 61 second pressure transducers, 62 Pressure gauges, 63 second temperature inductors;
7 return lines, 71 filters, 72 the 3rd temperature inductors;
8 coolant outlets;9 cooling water inlets;10PLC controls device;11 temperature controllers;12 gass collecting jar with ground-on cover plate;13 exhaust solenoid valves;14 first row hydraulic fluid ports;15 first electric T-shaped valves.
[detailed description of the invention]
Embodiment:
Refer to Fig. 1, the present embodiment is the high/low temperature deep fat control system of a kind of accurate homoiothermic, and it includes expanding oil tank 1, pumping 2, vaporizer 3, chiller 4, heater 5, outlet line 6, return line 7, coolant outlet 8, cooling water inlet 9, PLC control device 10 and temperature controller 11.
Coolant outlet 8 and cooling water inlet 9 constitute cooling water system.
Expand oil tank 1 and pumping 2 pipeline communication.Expanding oil tank 1 and be internally provided with liquid-level switch (not indicating in figure), liquid-level switch controls device 10 electric connection with PLC.
Gas collecting jar with ground-on cover plate 12 it is provided with between pumping 2 and return line 7.Gas collecting jar with ground-on cover plate 12 and expand between oil tank 1 and be provided with exhaust solenoid valve 13, exhaust solenoid valve 13 respectively with gas collecting jar with ground-on cover plate 12, expand oil tank 1 pipeline communication.It is provided with first row hydraulic fluid port 14 between pumping 2 and gas collecting jar with ground-on cover plate 12 and expansion oil tank 1.Discharge temperature control oil when first row hydraulic fluid port 14 is mainly used in cleaning, maintenance gas collecting jar with ground-on cover plate 12 and expands oil tank 1.Exhaust solenoid valve 13 is mainly used in the gas discharging gas collecting jar with ground-on cover plate 12 and expanding in oil tank 1, and the pressure prevented in deep fat control system in pipeline is excessive and blasting phenomena occurs.
Exhaust solenoid valve 13 controls device 10 electric connection with PLC.PLC controls device 10 and temperature controller 11 electric connection.
Pumping 2, vaporizer 3 and heater 5 three are provided with the first electric T-shaped valve 15 in its intersection, and pumping 2, vaporizer 3 and heater 5 are connected by three ports of pipeline and the first electric T-shaped valve 15 respectively.First electric T-shaped valve 15, pumping 2 control device 10 electric connection with PLC.It is capable of temperature control oil by the first electric T-shaped valve 15 enter chiller 4 or enter the automatic switchover of heater 5.
Vaporizer 3 is provided with flow switch 31 in its exit, and vaporizer 3 and outlet line 6 pass through pipeline communication.
Chiller 4 is a loop structure and includes condenser 41, device for drying and filtering 42, expansion drum 43, four expansion valves 44 in parallel, gas-liquid separator 45, air compressor 46 and oil point 47.
Gas-liquid separator 45, air compressor 46 and oil point 47 composition refrigerating plant.
One of condenser 41 outlet respectively with device for drying and filtering 42, expansion drum 43 pipeline communication, device for drying and filtering 42 and expansion drum 43 are in parallel setting.It is provided with pressure-sensitive switch 411 between condenser 41 and device for drying and filtering 42, expansion drum 43.The first electromagnetic valve 431 it is provided with at the inlet port of expansion drum 43.Four expansion valves 44 are arranged in tandem with device for drying and filtering 42, and wherein three expansion valves 44 connect with an inlet duct of vaporizer 3, another expansion valve 44 and gas-liquid separator 45 pipeline communication.Expansion drum 43 and gas-liquid separator 45 pipeline communication.Gas-liquid separator 45 and air compressor 46 pipeline communication.Oil point 47 and condenser 41 pipeline communication.Gas-liquid separator 45 and vaporizer 3 pipeline communication and the first temperature inductor 48 being provided with monitoring coolant temperature between the two.The second electromagnetic valve 441 it is provided with between each expansion valve 44 and device for drying and filtering 42.Condenser 41 respectively with coolant outlet 8, cooling water inlet 9 pipeline communication.
PLC controls device 10 and pressure-sensitive switch the 411, first electromagnetic valve the 431, second electromagnetic valve the 441, first temperature inductor 48 electric connection.
In chiller 4, cooling medium carries out heat exchange at condenser 41 and reduces its temperature with cooling water, and carries out heat exchange reduce the temperature of temperature control oil with temperature control oil at vaporizer 3, thus realizes the refrigerating function oily to temperature control.Cooling water sequentially passes through cooling water inlet 9, condenser 41, coolant outlet 8 and cooling water inlet 9 and is circulated motion;Cooling medium sequentially passes through condenser 41, device for drying and filtering 42, expansion valve 44, vaporizer 3, gas-liquid separator 45, air compressor 46, arrives condenser 41 again and be circulated motion for oily point 47 simultaneously.
By arranging parallel multiple expansion valves 44, and before each expansion valve 44, it is correspondingly arranged second electromagnetic valve 441, it is possible to the flow realizing being entered the cooling medium in vaporizer 3 by control controls cooling effectiveness, has saved resource.Expansion drum 43 is set between condenser 41 and gas-liquid separator 45, when the force value that PLC control device 10 detects in chiller 4 in pipeline is on the low side, internal cooling medium is clamp-oned in pipeline by expansion drum 43, feeds pipeline, improves the pressures cycle of pipe interior in chiller 4.Chiller 4 controls cooling effectiveness not only by the unlatching number of expansion valve 44, improves cooling effectiveness also by improving the flowing velocity of pipe interior in chiller 4.
Heater 5 includes adding heat pipe 51, heat exchanger 52.
It is provided with the second electric T-shaped valve 53 adding heat pipe 51, heat exchanger 52 and the first electric T-shaped valve 15 three intersection, adds heat pipe 51, heat exchanger 52 is connected by three ports of pipeline and the second electric T-shaped valve 53 respectively with the first electric T-shaped valve 15.Add heat pipe 51 and outlet line 6 pipeline communication.Add and at heat pipe 51, be provided with second row hydraulic fluid port 511.Heat exchanger 52 respectively with coolant outlet 8, cooling water inlet 9 by pipeline communication, and with add heat pipe 51 pipeline communication.Heat exchanger 52 and add and be provided with the first pressure transducer 54 between heat pipe 51.Add and heat pipe 51 is provided with overtemperature prote module 55.
PLC controls device 10 and the first pressure transducer 54 electric connection.Temperature controller 11 with add heat pipe the 51, second electric T-shaped valve 53 electric connection.
In heater 5, temperature control oil directly can carry out temperature adjustment to it by adding heat pipe 51, it is possible to part arrives through heat exchanger 52 again and adds heat pipe 51.Cooling water sequentially passes through cooling water inlet 9, heat exchanger 52, coolant outlet 8 and cooling water inlet 9 and is circulated motion, and temperature control oil carries out heat exchange at heat exchanger 52 with cooling water, thus realizes adjusting the temperature of temperature control oil.By temperature controller 11, can realize the control of two rates of discharge in the second electric T-shaped valve 53, thus can realize distributing according to demand and be directly entered the flow adding heat pipe 51 and after heat exchanger 52, enter back into the flow adding heat pipe 51, it is finally reached the function being precisely controlled temperature control oil.
Outlet line 6 is disposed with the second pressure transducer 61, Pressure gauge 62 and the second temperature inductor 63 along direction of the traffic between heater 5 and vaporizer 3.Second pressure transducer 61 controls device 10 electric connection with PLC;Second temperature inductor 63 and temperature controller 11 electric connection.
Return line 7 and gas collecting jar with ground-on cover plate 12 are disposed with filter the 71, the 3rd temperature inductor 72 by pipeline communication and along direction of the traffic.3rd temperature inductor 72 controls device 10 electric connection with PLC.
The present embodiment is that the operation principle of the high/low temperature deep fat control system of a kind of accurate homoiothermic is: temperature control oil is pumped across the first electric T-shaped valve 15 by pumping 2;PLC controls the device 10 Temperature Feedback according to the 3rd temperature inductor 72, and the desired temperature that client needs, and PLC controls device 10 and judges to carry out cooling down also to be by heating;If cooling down, then the first electric T-shaped valve 15 is opened towards chiller 4 direction, during chiller 4, the temperature difference size cooled down as required, PLC controls the number of device 10 and the unlatching of temperature controller 11 co-controlling expansion valve 44 and realizes the cooling to temperature control oil with cooling medium inner flow velocity;If heating, then the first electric T-shaped valve 15 is opened towards heater 5 direction, during heater 5, the temperature difference size heated as required, PLC controls device 10 and the opening degree of temperature controller 11 co-controlling the second electric T-shaped valve 53, distribution is directly entered the flow adding heat pipe 51 and enters back into the flow adding heat pipe 51 after heat exchanger 52, thus realizes the heating to temperature control oil;Oily in outlet line 6 enters into the equipment of client through the temperature control of apparatus for supercooling 4 or heater 5, again in return line 7 returns to gas collecting jar with ground-on cover plate 12, it is exhausted through exhaust solenoid valve 13, expands oil tank 1 and carry out repairing, then be pumped in system by pumping 2 and carry out next circulating path.
The present embodiment is having the beneficial effects that of the high/low temperature deep fat control system of a kind of accurate homoiothermic: can automatic detection for temperature, it is achieved the automatic switchover cooling down Yu heating, and temperature control precision is high, good stability, and heating efficiency and refrigerating efficiency are high;The temperature regulation in-30 DEG C~200 DEG C of intervals can be realized at short notice, and control accuracy can reach ± 0.1 DEG C.Concrete,
1) heater and refrigerating plant are integrated in unified pipeline, are obtained by automatic temperature-adjusting, set and need temperature automatic adjustment the first electric T-shaped valve to realize between temperature-controlled area, maintaining-30 DEG C~200 DEG C with the flow direction controlling heat conduction medium;
2) in heater, setting adds heat pipe and heat exchanger, and connected by the second electric T-shaped valve, control device by PLC and control flow and the power percentage of SCR control electrical heating output of the second electric three passes valve regulation cooling circuit, realize the automatic governing function of two kinds of heating modes, the temperature of stabilisation systems;
3) two-stage refrigerating mode is set in chiller, is on the one hand freezed by air compressor;Cooling medium after air compressor is lowered the temperature at condenser, is carried out reducing temperature twice through supercooled water by another reverse side, and this setting substantially increases cooling effectiveness;
4) parallel expansion valve is set in chiller, and is unified to connect with vaporizer, control device by PLC and control the unlatchings number of expansion valve and control the flowing velocity of cooling medium in chiller, thus reach the function of control cooling effectiveness;
5) by realizing the connection with loop exit, its compact conformation by sharing a pipeline through the outlet of apparatus for supercooling and the outlet of heater, space is saved;
6) at loop exit with loop head, it is provided with temperature inductor, the temperature at loop exit and loop head can be monitored accurately, thus realize degree of heat is precisely controlled with cooling degree, the final temperature realizing accurately controlling the temperature control oil of loop exit;
7) use integrated design, save the device space, and to refrigeration system compact Layout, save the energy that heat radiation is consumed, improve heating efficiency and the refrigerating efficiency of equipment.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, it is also possible to make some deformation and improvement, these broadly fall into protection scope of the present invention.

Claims (9)

1. the high/low temperature deep fat control system of an accurate homoiothermic, it is characterised in that: it includes flowline Road, return line, chiller, heater, pumping and cooling water system, described in add hot charging Put and connect with described outlet line after collecting with described chiller, described pumping and described return line, Described heater and described chiller pipeline communication, described in be pumped through the first electric T-shaped valve Connecting with described chiller, described heater respectively after shunting, described heater includes passing through What the second electric T-shaped valve connected with described first electric T-shaped valve adds heat pipe and heat exchanger, described heat exchange Device connects with described cooling water system.
2. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 1, it is characterised in that: Also include that PLC controls device and temperature controller, described PLC control device and described pumping, described the One electric T-shaped valve electric connection, described temperature controller and described second electric T-shaped valve, described heating Pipe electric connection.
3. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 1, it is characterised in that: The described heat pipe that adds connects with described outlet line.
4. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 1, it is characterised in that: The described heat pipe that adds connects with described heat exchanger.
5. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 1, it is characterised in that: Described chiller includes the gas that the vaporizer connected with described pumping connects with described evaporator pipeline Liquid/gas separator and the air compressor of described gas-liquid separator pipeline communication.
6. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 1, it is characterised in that: Also including expanding oil tank and gas collecting jar with ground-on cover plate, described gas collecting jar with ground-on cover plate and described expansion oil tank collect rear and described pump Pu pipeline communication.
7. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 6, it is characterised in that: Between described expansion oil tank and described gas collecting jar with ground-on cover plate, pipeline is connected and is provided with aerofluxus electromagnetism on this pipeline Valve, described exhaust solenoid valve controls device with described PLC and electrically connects.
8. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 6, it is characterised in that: Described gas collecting jar with ground-on cover plate and described expansion oil tank collect after pipeline on shunting be provided with first row hydraulic fluid port.
9. the high/low temperature deep fat control system of accurately homoiothermic as claimed in claim 1, it is characterised in that: Described adding, is provided with second row hydraulic fluid port on heat pipe.
CN201610503678.0A 2016-06-30 2016-06-30 High low temperature oil heating control system capable of achieving accurate temperature regulation Pending CN106016757A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200230563A1 (en) * 2018-08-16 2020-07-23 Beijing Aerospace Propulsion Institute Skid-Mounted Depressurizing System

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* Cited by examiner, † Cited by third party
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US20200230563A1 (en) * 2018-08-16 2020-07-23 Beijing Aerospace Propulsion Institute Skid-Mounted Depressurizing System
US10946358B2 (en) * 2018-08-16 2021-03-16 Beijing Aerospace Propulsion Institute Skid-mounted depressurizing system

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Address after: Room 3 and 4, 228 Wulian Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province

Applicant after: Suzhou Aode high end equipment Co.,Ltd.

Address before: Room 3 and 4, 228 Wulian Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province

Applicant before: SUZHOU AODE MACHINERY Co.,Ltd.

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Application publication date: 20161012